toybox: toys/pending/dhcp.c annotate

annotate toys/pending/dhcp.c @ 1384:4a7438307429 draft

minor cleanup: move a global variable into GLOBALS(), inline strchr_null(), some whitespace and bracket cleanups.

author	Rob Landley <rob@landley.net>
date	Sun, 06 Jul 2014 23:21:13 -0500
parents	85f297591693
children	e0c9c5424864

rev	line source
1005 03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1 /* dhcp.c - DHCP client for dynamic network configuration.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	2 *
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	3 * Copyright 2012 Madhur Verma <mad.flexi@gmail.com>
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	4 * Copyright 2013 Kyungwan Han <asura321@gmail.com>
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	5 *
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	6 * Not in SUSv4.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	7 USE_DHCP(NEWTOY(dhcp, "V:H:F:xr:OA#<0T#<0t#<0s:p:i:SBRCaovqnbf", TOYFLAG_SBIN\|TOYFLAG_ROOTONLY))
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	8
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	9 config DHCP
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	10 bool "dhcp"
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	11 default n
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	12 help
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	13 usage: dhcp [-fbnqvoCRB] [-i IFACE] [-r IP] [-s PROG] [-p PIDFILE]
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	14 [-H HOSTNAME] [-V VENDOR] [-x OPT:VAL] [-O OPT]
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	15
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	16 Configure network dynamicaly using DHCP.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	17
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	18 -i Interface to use (default eth0)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	19 -p Create pidfile
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	20 -s Run PROG at DHCP events (default /usr/share/dhcp/default.script)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	21 -B Request broadcast replies
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	22 -t Send up to N discover packets
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	23 -T Pause between packets (default 3 seconds)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	24 -A Wait N seconds after failure (default 20)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	25 -f Run in foreground
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	26 -b Background if lease is not obtained
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	27 -n Exit if lease is not obtained
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	28 -q Exit after obtaining lease
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	29 -R Release IP on exit
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	30 -S Log to syslog too
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	31 -a Use arping to validate offered address
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	32 -O Request option OPT from server (cumulative)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	33 -o Don't request any options (unless -O is given)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	34 -r Request this IP address
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	35 -x OPT:VAL Include option OPT in sent packets (cumulative)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	36 -F Ask server to update DNS mapping for NAME
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	37 -H Send NAME as client hostname (default none)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	38 -V VENDOR Vendor identifier (default 'toybox VERSION')
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	39 -C Don't send MAC as client identifier
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	40 -v Verbose
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	41
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	42 Signals:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	43 USR1 Renew current lease
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	44 USR2 Release current lease
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	45
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	46 */
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	47
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	48 #define FOR_dhcp
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	49 #include "toys.h"
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	50
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	51 // TODO: headers not in posix:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	52 #include <netinet/ip.h>
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	53 #include <netinet/udp.h>
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	54 #include <netpacket/packet.h>
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	55
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	56 #include <linux/filter.h> //FIXME: linux specific. fix for other OS ports
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	57 #include <linux/if_ether.h>
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	58
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	59 GLOBALS(
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	60 char *iface;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	61 char *pidfile;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	62 char *script;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	63 long retries;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	64 long timeout;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	65 long tryagain;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	66 struct arg_list *req_opt;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	67 char *req_ip;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	68 struct arg_list *pkt_opt;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	69 char *fdn_name;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	70 char *hostname;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	71 char *vendor_cls;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	72 )
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	73
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	74 #define flag_get(f,v,d) ((toys.optflags & f) ? v : d)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	75 #define flag_chk(f) ((toys.optflags & f) ? 1 : 0)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	76
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	77 #define STATE_INIT 0
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	78 #define STATE_REQUESTING 1
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	79 #define STATE_BOUND 2
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	80 #define STATE_RENEWING 3
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	81 #define STATE_REBINDING 4
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	82 #define STATE_RENEW_REQUESTED 5
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	83 #define STATE_RELEASED 6
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	84
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	85 #define BOOTP_BROADCAST 0x8000
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	86 #define DHCP_MAGIC 0x63825363
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	87
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	88 #define DHCP_REQUEST 1
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	89 #define DHCP_REPLY 2
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	90 #define DHCP_HTYPE_ETHERNET 1
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	91
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	92 #define DHCPC_SERVER_PORT 67
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	93 #define DHCPC_CLIENT_PORT 68
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	94
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	95 #define DHCPDISCOVER 1
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	96 #define DHCPOFFER 2
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	97 #define DHCPREQUEST 3
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	98 #define DHCPACK 5
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	99 #define DHCPNAK 6
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	100 #define DHCPRELEASE 7
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	101
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	102 #define DHCP_OPTION_PADDING 0x00
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	103 #define DHCP_OPTION_SUBNET_MASK 0x01
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	104 #define DHCP_OPTION_ROUTER 0x03
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	105 #define DHCP_OPTION_DNS_SERVER 0x06
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	106 #define DHCP_OPTION_HOST_NAME 0x0c
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	107 #define DHCP_OPTION_BROADCAST 0x1c
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	108 #define DHCP_OPTION_REQ_IPADDR 0x32
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	109 #define DHCP_OPTION_LEASE_TIME 0x33
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	110 #define DHCP_OPTION_OVERLOAD 0x34
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	111 #define DHCP_OPTION_MSG_TYPE 0x35
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	112 #define DHCP_OPTION_SERVER_ID 0x36
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	113 #define DHCP_OPTION_REQ_LIST 0x37
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	114 #define DHCP_OPTION_MAX_SIZE 0x39
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	115 #define DHCP_OPTION_CLIENTID 0x3D
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	116 #define DHCP_OPTION_VENDOR 0x3C
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	117 #define DHCP_OPTION_FQDN 0x51
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	118 #define DHCP_OPTION_END 0xFF
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	119
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	120 #define DHCP_NUM8 (1<<8)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	121 #define DHCP_NUM16 (1<<9)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	122 #define DHCP_NUM32 DHCP_NUM16 \| DHCP_NUM8
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	123 #define DHCP_STRING (1<<10)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	124 #define DHCP_STRLST (1<<11)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	125 #define DHCP_IP (1<<12)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	126 #define DHCP_IPLIST (1<<13)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	127 #define DHCP_IPPLST (1<<14)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	128 #define DHCP_STCRTS (1<<15)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	129
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	130 #define LOG_SILENT 0x0
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	131 #define LOG_CONSOLE 0x1
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	132 #define LOG_SYSTEM 0x2
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	133
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	134 #define MODE_OFF 0
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	135 #define MODE_RAW 1
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	136 #define MODE_APP 2
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	137
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	138 static void (dbg)(char format, ...);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	139 static void dummy(char *format, ...){
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	140 return;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	141 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	142
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	143 typedef struct dhcpc_result_s {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	144 struct in_addr serverid;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	145 struct in_addr ipaddr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	146 struct in_addr netmask;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	147 struct in_addr dnsaddr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	148 struct in_addr default_router;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	149 uint32_t lease_time;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	150 } dhcpc_result_t;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	151
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	152 typedef struct __attribute__((packed)) dhcp_msg_s {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	153 uint8_t op;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	154 uint8_t htype;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	155 uint8_t hlen;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	156 uint8_t hops;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	157 uint32_t xid;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	158 uint16_t secs;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	159 uint16_t flags;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	160 uint32_t ciaddr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	161 uint32_t yiaddr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	162 uint32_t nsiaddr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	163 uint32_t ngiaddr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	164 uint8_t chaddr[16];
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	165 uint8_t sname[64];
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	166 uint8_t file[128];
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	167 uint32_t cookie;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	168 uint8_t options[308];
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	169 } dhcp_msg_t;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	170
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	171 typedef struct __attribute__((packed)) dhcp_raw_s {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	172 struct iphdr iph;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	173 struct udphdr udph;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	174 dhcp_msg_t dhcp;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	175 } dhcp_raw_t;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	176
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	177 typedef struct dhcpc_state_s {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	178 uint8_t macaddr[6];
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	179 char *iface;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	180 int ifindex;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	181 int sockfd;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	182 int status;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	183 int mode;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	184 uint32_t mask;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	185 struct in_addr ipaddr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	186 struct in_addr serverid;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	187 dhcp_msg_t pdhcp;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	188 } dhcpc_state_t;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	189
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	190 typedef struct option_val_s {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	191 char *key;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	192 uint16_t code;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	193 void *val;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	194 size_t len;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	195 } option_val_t;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	196
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	197 struct fd_pair { int rd; int wr; };
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	198 static uint32_t xid;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	199 static dhcpc_state_t *state;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	200 static struct fd_pair sigfd;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	201 uint8_t bmacaddr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	202 int set = 1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	203 uint8_t infomode = LOG_CONSOLE;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	204 uint8_t raw_opt[29];
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	205 int raw_optcount = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	206 struct arg_list *x_opt;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	207 in_addr_t server = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	208
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	209 static option_val_t *msgopt_list = NULL;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	210 static option_val_t options_list[] = {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	211 {"lease" , DHCP_NUM32 \| 0x33, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	212 {"subnet" , DHCP_IP \| 0x01, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	213 {"broadcast" , DHCP_IP \| 0x1c, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	214 {"router" , DHCP_IP \| 0x03, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	215 {"ipttl" , DHCP_NUM8 \| 0x17, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	216 {"mtu" , DHCP_NUM16 \| 0x1a, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	217 {"hostname" , DHCP_STRING \| 0x0c, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	218 {"domain" , DHCP_STRING \| 0x0f, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	219 {"search" , DHCP_STRLST \| 0x77, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	220 {"nisdomain" , DHCP_STRING \| 0x28, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	221 {"timezone" , DHCP_NUM32 \| 0x02, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	222 {"tftp" , DHCP_STRING \| 0x42, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	223 {"bootfile" , DHCP_STRING \| 0x43, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	224 {"bootsize" , DHCP_NUM16 \| 0x0d, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	225 {"rootpath" , DHCP_STRING \| 0x11, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	226 {"wpad" , DHCP_STRING \| 0xfc, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	227 {"serverid" , DHCP_IP \| 0x36, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	228 {"message" , DHCP_STRING \| 0x38, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	229 {"vlanid" , DHCP_NUM32 \| 0x84, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	230 {"vlanpriority" , DHCP_NUM32 \| 0x85, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	231 {"dns" , DHCP_IPLIST \| 0x06, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	232 {"wins" , DHCP_IPLIST \| 0x2c, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	233 {"nissrv" , DHCP_IPLIST \| 0x29, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	234 {"ntpsrv" , DHCP_IPLIST \| 0x2a, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	235 {"lprsrv" , DHCP_IPLIST \| 0x09, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	236 {"swapsrv" , DHCP_IP \| 0x10, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	237 {"routes" , DHCP_STCRTS \| 0x21, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	238 {"staticroutes" , DHCP_STCRTS \| 0x79, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	239 {"msstaticroutes" , DHCP_STCRTS \| 0xf9, NULL, 0},
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	240 };
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	241
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	242 static struct sock_filter filter_instr[] = {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	243 BPF_STMT(BPF_LD\|BPF_B\|BPF_ABS, 9),
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	244 BPF_JUMP(BPF_JMP\|BPF_JEQ\|BPF_K, IPPROTO_UDP, 0, 6),
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	245 BPF_STMT(BPF_LD\|BPF_H\|BPF_ABS, 6),
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	246 BPF_JUMP(BPF_JMP\|BPF_JSET\|BPF_K, 0x1fff, 4, 0),
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	247 BPF_STMT(BPF_LDX\|BPF_B\|BPF_MSH, 0), BPF_STMT(BPF_LD\|BPF_H\|BPF_IND, 2),
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	248 BPF_JUMP(BPF_JMP\|BPF_JEQ\|BPF_K, 68, 0, 1),
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	249 BPF_STMT(BPF_RET\|BPF_K, 0xffffffff), BPF_STMT(BPF_RET\|BPF_K, 0),
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	250 };
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	251
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	252 static struct sock_fprog filter_prog = {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	253 .len = ARRAY_LEN(filter_instr),
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	254 .filter = (struct sock_filter *) filter_instr,
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	255 };
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	256
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	257 // calculate options size.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	258 static int dhcp_opt_size(uint8_t *optionptr)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	259 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	260 int i = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	261 for(;optionptr[i] != 0xff; i++) if(optionptr[i] != 0x00) i += optionptr[i + 1] + 2 -1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	262 return i;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	263 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	264
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	265 // calculates checksum for dhcp messages.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	266 static uint16_t dhcp_checksum(void *addr, int count)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	267 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	268 int32_t sum = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	269 uint16_t tmp = 0, source = (uint16_t )addr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	270
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	271 while (count > 1) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	272 sum += *source++;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	273 count -= 2;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	274 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	275 if (count > 0) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	276 (uint8_t)&tmp = (uint8_t)source;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	277 sum += tmp;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	278 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	279 while (sum >> 16) sum = (sum & 0xffff) + (sum >> 16);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	280 return ~sum;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	281 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	282
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	283 // gets information of INTERFACE and updates IFINDEX, MAC and IP
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	284 static int get_interface( char interface, int ifindex, uint32_t oip, uint8_t mac)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	285 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	286 struct ifreq req;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	287 struct sockaddr_in *ip;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	288 int fd = xsocket(AF_INET, SOCK_RAW, IPPROTO_RAW);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	289
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	290 req.ifr_addr.sa_family = AF_INET;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	291 strncpy(req.ifr_name, interface, IFNAMSIZ);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	292 req.ifr_name[IFNAMSIZ-1] = '\0';
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	293
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	294 xioctl(fd, SIOCGIFFLAGS, &req);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	295 if (!(req.ifr_flags & IFF_UP)) return -1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	296
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	297 if (oip) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	298 xioctl(fd, SIOCGIFADDR, &req);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	299 ip = (struct sockaddr_in*) &req.ifr_addr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	300 dbg("IP %s\n", inet_ntoa(ip->sin_addr));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	301 *oip = ntohl(ip->sin_addr.s_addr);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	302 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	303 if (ifindex) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	304 xioctl(fd, SIOCGIFINDEX, &req);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	305 dbg("Adapter index %d\n", req.ifr_ifindex);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	306 *ifindex = req.ifr_ifindex;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	307 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	308 if (mac) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	309 xioctl(fd, SIOCGIFHWADDR, &req);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	310 memcpy(mac, req.ifr_hwaddr.sa_data, 6);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	311 dbg("MAC %02x:%02x:%02x:%02x:%02x:%02x\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	312 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	313 close(fd);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	314 return 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	315 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	316
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	317 static int dhcp_daemon(void)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	318 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	319 int fd = open("/dev/null", O_RDWR);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	320 if (fd < 0) fd = xcreate("/", O_RDONLY, 0666);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	321
1327 85f297591693 Introduce xfork() and make commands use it, and make some WEXITSTATUS() use WIFEXITED() and WTERMSIG()+127. Rob Landley <rob@landley.net> parents: 1294 diff changeset	322 if (xfork()) exit(0);
1005 03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	323
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	324 setsid();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	325 dup2(fd, 0);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	326 dup2(fd, 1);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	327 dup2(fd, 2);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	328 if (fd > 2) xclose(fd);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	329
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	330 return 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	331 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	332
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	333 /*
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	334 *logs messeges to syslog or console
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	335 *opening the log is still left with applet.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	336 *FIXME: move to more relevent lib. probably libc.c
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	337 */
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	338 static void infomsg(uint8_t infomode, char *s, ...)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	339 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	340 int used;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	341 char *msg;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	342 va_list p, t;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	343
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	344 if (infomode == LOG_SILENT) return;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	345 va_start(p, s);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	346 va_copy(t, p);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	347 used = vsnprintf(NULL, 0, s, t);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	348 used++;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	349 va_end(t);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	350
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	351 msg = xmalloc(used);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	352 vsnprintf(msg, used, s, p);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	353 va_end(p);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	354
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	355 if (infomode & LOG_SYSTEM) syslog(LOG_INFO, "%s", msg);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	356 if (infomode & LOG_CONSOLE) printf("%s\n", msg);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	357 free(msg);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	358 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	359
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	360 /*
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	361 * Writes self PID in file PATH
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	362 * FIXME: libc implementation only writes in /var/run
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	363 * this is more generic as some implemenation may provide
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	364 * arguments to write in specific file. as dhcpd does.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	365 */
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	366 static void write_pid(char *path)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	367 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	368 int pidfile = open(path, O_CREAT \| O_WRONLY \| O_TRUNC, 0666);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	369 if (pidfile > 0) {
1041 d3f9e55e350a Convert dhcp/dhcpd from utoa() to sprintf(). Rob Landley <rob@landley.net> parents: 1005 diff changeset	370 char pidbuf[12];
d3f9e55e350a Convert dhcp/dhcpd from utoa() to sprintf(). Rob Landley <rob@landley.net> parents: 1005 diff changeset	371
d3f9e55e350a Convert dhcp/dhcpd from utoa() to sprintf(). Rob Landley <rob@landley.net> parents: 1005 diff changeset	372 sprintf(pidbuf, "%u", (unsigned)getpid());
1005 03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	373 write(pidfile, pidbuf, strlen(pidbuf));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	374 close(pidfile);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	375 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	376 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	377
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	378 // String STR to UINT32 conversion strored in VAR
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	379 static long strtou32( char *str)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	380 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	381 char *endptr = NULL;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	382 int base = 10;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	383 errno=0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	384 if (str[0]=='0' && (str[1]=='x' \|\| str[1]=='X')) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	385 base = 16;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	386 str+=2;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	387 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	388 long ret_val = strtol(str, &endptr, base);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	389 if (errno) return -1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	390 else if (endptr && (*endptr!='\0'\|\|endptr == str)) return -1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	391 return ret_val;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	392 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	393
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	394 // IP String STR to binary data.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	395 static int striptovar( char str, void var)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	396 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	397 in_addr_t addr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	398 if(!str) error_exit("NULL address string.");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	399 addr = inet_addr(str);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	400 if(addr == -1) error_exit("Wrong address %s.",str );
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	401 ((uint32_t)(var)) = (uint32_t)addr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	402 return 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	403 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	404
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	405 // String to dhcp option conversion
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	406 static int strtoopt( char *str, uint8_t optonly)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	407 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	408 char option, valstr, grp, tp;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	409 long optcode = 0, convtmp;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	410 uint16_t flag = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	411 uint32_t mask, nip, router;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	412 int count, size = ARRAY_LEN(options_list);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	413
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	414 if (!*str) return 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	415 option = strtok((char*)str, ":");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	416 if (!option) return -1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	417
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	418 dbg("-x option : %s ", option);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	419 optcode = strtou32(option);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	420
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	421 if (optcode > 0 && optcode < 256) { // raw option
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	422 for (count = 0; count < size; count++) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	423 if ((options_list[count].code & 0X00FF) == optcode) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	424 flag = (options_list[count].code & 0XFF00);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	425 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	426 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	427 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	428 if (count == size) error_exit("Obsolete OR Unknown Option : %s", option);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	429 } else { // string option
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	430 for (count = 0; count < size; count++) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	431 if (!strcmp(options_list[count].key, option)) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	432 flag = (options_list[count].code & 0XFF00);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	433 optcode = (options_list[count].code & 0X00FF);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	434 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	435 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	436 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	437 if (count == size) error_exit("Obsolete OR Unknown Option : %s", option);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	438 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	439 if (!flag \|\| !optcode) return -1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	440 if (optonly) return optcode;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	441
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	442 valstr = strtok(NULL, "\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	443 if (!valstr) error_exit("option %s has no value defined.\n", option);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	444 dbg(" value : %-20s \n ", valstr);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	445 switch (flag) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	446 case DHCP_NUM32:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	447 options_list[count].len = sizeof(uint32_t);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	448 options_list[count].val = xmalloc(sizeof(uint32_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	449 convtmp = strtou32(valstr);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	450 if (convtmp < 0) error_exit("Invalid/wrong formated number %s", valstr);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	451 convtmp = htonl(convtmp);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	452 memcpy(options_list[count].val, &convtmp, sizeof(uint32_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	453 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	454 case DHCP_NUM16:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	455 options_list[count].len = sizeof(uint16_t);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	456 options_list[count].val = xmalloc(sizeof(uint16_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	457 convtmp = strtou32(valstr);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	458 if (convtmp < 0) error_exit("Invalid/malformed number %s", valstr);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	459 convtmp = htons(convtmp);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	460 memcpy(options_list[count].val, &convtmp, sizeof(uint16_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	461 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	462 case DHCP_NUM8:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	463 options_list[count].len = sizeof(uint8_t);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	464 options_list[count].val = xmalloc(sizeof(uint8_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	465 convtmp = strtou32(valstr);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	466 if (convtmp < 0) error_exit("Invalid/malformed number %s", valstr);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	467 memcpy(options_list[count].val, &convtmp, sizeof(uint8_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	468 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	469 case DHCP_IP:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	470 options_list[count].len = sizeof(uint32_t);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	471 options_list[count].val = xmalloc(sizeof(uint32_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	472 striptovar(valstr, options_list[count].val);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	473 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	474 case DHCP_STRING:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	475 options_list[count].len = strlen(valstr);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	476 options_list[count].val = strdup(valstr);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	477 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	478 case DHCP_IPLIST:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	479 while(valstr){
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	480 options_list[count].val = xrealloc(options_list[count].val, options_list[count].len + sizeof(uint32_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	481 striptovar(valstr, ((uint8_t*)options_list[count].val)+options_list[count].len);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	482 options_list[count].len += sizeof(uint32_t);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	483 valstr = strtok(NULL," \t");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	484 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	485 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	486 case DHCP_STRLST:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	487 case DHCP_IPPLST:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	488 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	489 case DHCP_STCRTS:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	490 /* Option binary format:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	491 * mask [one byte, 0..32]
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	492 * ip [0..4 bytes depending on mask]
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	493 * router [4 bytes]
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	494 * may be repeated
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	495 * staticroutes 10.0.0.0/8 10.127.0.1, 10.11.12.0/24 10.11.12.1
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	496 */
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	497 grp = strtok(valstr, ",");;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	498 while(grp){
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	499 while(grp == ' ' \|\| grp == '\t') grp++;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	500 tp = strchr(grp, '/');
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	501 if (!tp) error_exit("malformed static route option");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	502 *tp = '\0';
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	503 mask = strtol(++tp, &tp, 10);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	504 if (striptovar(grp, (uint8_t*)&nip) < 0) error_exit("malformed static route option");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	505 while(tp == ' ' \|\| tp == '\t' \|\| *tp == '-') tp++;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	506 if (striptovar(tp, (uint8_t*)&router) < 0) error_exit("malformed static route option");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	507 options_list[count].val = xrealloc(options_list[count].val, options_list[count].len + 1 + mask/8 + 4);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	508 memcpy(((uint8_t*)options_list[count].val)+options_list[count].len, &mask, 1);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	509 options_list[count].len += 1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	510 memcpy(((uint8_t*)options_list[count].val)+options_list[count].len, &nip, mask/8);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	511 options_list[count].len += mask/8;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	512 memcpy(((uint8_t*)options_list[count].val)+options_list[count].len, &router, 4);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	513 options_list[count].len += 4;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	514 tp = NULL;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	515 grp = strtok(NULL, ",");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	516 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	517 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	518 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	519 return 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	520 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	521
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	522 // Creates environment pointers from RES to use in script
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	523 static int fill_envp(dhcpc_result_t *res)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	524 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	525 struct in_addr temp;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	526 int size = ARRAY_LEN(options_list), count, ret = -1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	527
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	528 ret = setenv("interface", state->iface, 1);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	529 if (!res) return ret;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	530 if (res->ipaddr.s_addr) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	531 temp.s_addr = htonl(res->ipaddr.s_addr);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	532 ret = setenv("ip", inet_ntoa(temp), 1);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	533 if (ret) return ret;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	534 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	535 if (msgopt_list) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	536 for (count = 0; count < size; count++) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	537 if ((msgopt_list[count].len == 0) \|\| (msgopt_list[count].val == NULL)) continue;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	538 ret = setenv(msgopt_list[count].key, (char*)msgopt_list[count].val, 1);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	539 if (ret) return ret;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	540 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	541 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	542 return ret;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	543 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	544
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	545 // Executes Script NAME.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	546 static void run_script(dhcpc_result_t res, char name)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	547 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	548 volatile int error = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	549 pid_t pid;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	550 char *argv[3];
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	551 struct stat sts;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	552 char *script = flag_get(FLAG_s, TT.script, "/usr/share/dhcp/default.script");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	553
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	554 if (stat(script, &sts) == -1 && errno == ENOENT) return;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	555 if (fill_envp(res)) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	556 dbg("Failed to create environment variables.");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	557 return;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	558 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	559 dbg("Executing %s %s\n", script, name);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	560 argv[0] = (char*) script;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	561 argv[1] = (char*) name;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	562 argv[2] = NULL;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	563 fflush(NULL);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	564
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	565 pid = vfork();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	566 if (pid < 0) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	567 dbg("Fork failed.\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	568 return;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	569 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	570 if (!pid) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	571 execvp(argv[0], argv);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	572 error = errno;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	573 _exit(111);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	574 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	575 if (error) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	576 waitpid(pid, NULL,0);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	577 errno = error;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	578 perror_msg("script exec failed");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	579 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	580 dbg("script complete.\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	581 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	582
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	583 // returns a randome ID
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	584 static uint32_t getxid(void)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	585 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	586 uint32_t randnum;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	587 int fd = xopen("/dev/urandom", O_RDONLY);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	588 xreadall(fd, &randnum, sizeof(randnum));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	589 xclose(fd);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	590 return randnum;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	591 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	592
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	593 // opens socket in raw mode.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	594 static int mode_raw(void)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	595 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	596 state->mode = MODE_OFF;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	597 struct sockaddr_ll sock;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	598
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	599 if (state->sockfd > 0) close(state->sockfd);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	600 dbg("Opening raw socket on ifindex %d\n", state->ifindex);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	601
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	602 state->sockfd = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_IP));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	603 if (state->sockfd < 0) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	604 dbg("MODE RAW : socket fail ERROR : %d\n", state->sockfd);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	605 return -1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	606 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	607 dbg("Got raw socket fd %d\n", state->sockfd);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	608 memset(&sock, 0, sizeof(sock));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	609 sock.sll_family = AF_PACKET;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	610 sock.sll_protocol = htons(ETH_P_IP);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	611 sock.sll_ifindex = state->ifindex;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	612
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	613 if (bind(state->sockfd, (struct sockaddr *) &sock, sizeof(sock))) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	614 dbg("MODE RAW : bind fail.\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	615 close(state->sockfd);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	616 return -1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	617 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	618 state->mode = MODE_RAW;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	619 if (setsockopt(state->sockfd, SOL_SOCKET, SO_ATTACH_FILTER, &filter_prog, sizeof(filter_prog)) < 0)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	620 dbg("MODE RAW : filter attach fail.\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	621
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	622 dbg("MODE RAW : success\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	623 return 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	624 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	625
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	626 // opens UDP socket
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	627 static int mode_app(void)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	628 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	629 struct sockaddr_in addr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	630 struct ifreq ifr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	631
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	632 state->mode = MODE_OFF;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	633 if (state->sockfd > 0) close(state->sockfd);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	634
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	635 dbg("Opening listen socket on *:%d %s\n", DHCPC_CLIENT_PORT, state->iface);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	636 state->sockfd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	637 if (state->sockfd < 0) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	638 dbg("MODE APP : socket fail ERROR: %d\n", state->sockfd);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	639 return -1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	640 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	641 setsockopt(state->sockfd, SOL_SOCKET, SO_REUSEADDR, &set, sizeof(set));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	642 if (setsockopt(state->sockfd, SOL_SOCKET, SO_BROADCAST, &set, sizeof(set)) == -1) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	643 dbg("MODE APP : brodcast failed.\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	644 close(state->sockfd);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	645 return -1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	646 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	647 strncpy(ifr.ifr_name, state->iface, IFNAMSIZ);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	648 ifr.ifr_name[IFNAMSIZ -1] = '\0';
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	649 setsockopt(state->sockfd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	650
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	651 memset(&addr, 0, sizeof(addr));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	652 addr.sin_family = AF_INET;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	653 addr.sin_port = htons(DHCPC_CLIENT_PORT);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	654 addr.sin_addr.s_addr = INADDR_ANY ;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	655
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	656 if (bind(state->sockfd, (struct sockaddr *) &addr, sizeof(addr))) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	657 close(state->sockfd);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	658 dbg("MODE APP : bind failed.\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	659 return -1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	660 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	661 state->mode = MODE_APP;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	662 dbg("MODE APP : success\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	663 return 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	664 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	665
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	666 static int read_raw(void)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	667 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	668 dhcp_raw_t packet;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	669 uint16_t check;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	670 int bytes = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	671
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	672 memset(&packet, 0, sizeof(packet));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	673 if ((bytes = read(state->sockfd, &packet, sizeof(packet))) < 0) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	674 dbg("\tPacket read error, ignoring\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	675 return bytes;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	676 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	677 if (bytes < (int) (sizeof(packet.iph) + sizeof(packet.udph))) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	678 dbg("\tPacket is too short, ignoring\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	679 return -2;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	680 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	681 if (bytes < ntohs(packet.iph.tot_len)) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	682 dbg("\tOversized packet, ignoring\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	683 return -2;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	684 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	685 // ignore any extra garbage bytes
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	686 bytes = ntohs(packet.iph.tot_len);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	687 // make sure its the right packet for us, and that it passes sanity checks
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	688 if (packet.iph.protocol != IPPROTO_UDP \|\| packet.iph.version != IPVERSION
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	689 \|\| packet.iph.ihl != (sizeof(packet.iph) >> 2)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	690 \|\| packet.udph.dest != htons(DHCPC_CLIENT_PORT)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	691 \|\| ntohs(packet.udph.len) != (uint16_t)(bytes - sizeof(packet.iph))) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	692 dbg("\tUnrelated/bogus packet, ignoring\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	693 return -2;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	694 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	695 // verify IP checksum
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	696 check = packet.iph.check;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	697 packet.iph.check = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	698 if (check != dhcp_checksum(&packet.iph, sizeof(packet.iph))) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	699 dbg("\tBad IP header checksum, ignoring\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	700 return -2;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	701 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	702 memset(&packet.iph, 0, ((size_t) &((struct iphdr *)0)->protocol));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	703 packet.iph.tot_len = packet.udph.len;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	704 check = packet.udph.check;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	705 packet.udph.check = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	706 if (check && check != dhcp_checksum(&packet, bytes)) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	707 dbg("\tPacket with bad UDP checksum received, ignoring\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	708 return -2;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	709 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	710 memcpy(&state->pdhcp, &packet.dhcp, bytes - (sizeof(packet.iph) + sizeof(packet.udph)));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	711 if (state->pdhcp.cookie != htonl(DHCP_MAGIC)) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	712 dbg("\tPacket with bad magic, ignoring\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	713 return -2;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	714 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	715 return bytes - sizeof(packet.iph) - sizeof(packet.udph);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	716 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	717
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	718 static int read_app(void)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	719 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	720 int ret;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	721
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	722 memset(&state->pdhcp, 0, sizeof(dhcp_msg_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	723 if ((ret = read(state->sockfd, &state->pdhcp, sizeof(dhcp_msg_t))) < 0) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	724 dbg("Packet read error, ignoring\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	725 return ret; /* returns -1 */
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	726 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	727 if (state->pdhcp.cookie != htonl(DHCP_MAGIC)) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	728 dbg("Packet with bad magic, ignoring\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	729 return -2;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	730 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	731 return ret;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	732 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	733
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	734 // Sends data through raw socket.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	735 static int send_raw(void)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	736 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	737 struct sockaddr_ll dest_sll;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	738 dhcp_raw_t packet;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	739 unsigned padding;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	740 int fd, result = -1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	741
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	742 memset(&packet, 0, sizeof(dhcp_raw_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	743 memcpy(&packet.dhcp, &state->pdhcp, sizeof(dhcp_msg_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	744
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	745 if ((fd = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_IP))) < 0) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	746 dbg("SEND RAW: socket failed\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	747 return result;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	748 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	749 memset(&dest_sll, 0, sizeof(dest_sll));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	750 dest_sll.sll_family = AF_PACKET;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	751 dest_sll.sll_protocol = htons(ETH_P_IP);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	752 dest_sll.sll_ifindex = state->ifindex;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	753 dest_sll.sll_halen = 6;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	754 memcpy(dest_sll.sll_addr, bmacaddr , 6);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	755
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	756 if (bind(fd, (struct sockaddr *) &dest_sll, sizeof(dest_sll)) < 0) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	757 dbg("SEND RAW: bind failed\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	758 close(fd);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	759 return result;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	760 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	761 padding = 308 - 1 - dhcp_opt_size(state->pdhcp.options);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	762 packet.iph.protocol = IPPROTO_UDP;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	763 packet.iph.saddr = INADDR_ANY;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	764 packet.iph.daddr = INADDR_BROADCAST;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	765 packet.udph.source = htons(DHCPC_CLIENT_PORT);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	766 packet.udph.dest = htons(DHCPC_SERVER_PORT);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	767 packet.udph.len = htons(sizeof(dhcp_raw_t) - sizeof(struct iphdr) - padding);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	768 packet.iph.tot_len = packet.udph.len;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	769 packet.udph.check = dhcp_checksum(&packet, sizeof(dhcp_raw_t) - padding);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	770 packet.iph.tot_len = htons(sizeof(dhcp_raw_t) - padding);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	771 packet.iph.ihl = sizeof(packet.iph) >> 2;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	772 packet.iph.version = IPVERSION;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	773 packet.iph.ttl = IPDEFTTL;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	774 packet.iph.check = dhcp_checksum(&packet.iph, sizeof(packet.iph));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	775
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	776 result = sendto(fd, &packet, sizeof(dhcp_raw_t) - padding, 0,
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	777 (struct sockaddr *) &dest_sll, sizeof(dest_sll));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	778
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	779 close(fd);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	780 if (result < 0) dbg("SEND RAW: PACKET send error\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	781 return result;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	782 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	783
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	784 // Sends data through UDP socket.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	785 static int send_app(void)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	786 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	787 struct sockaddr_in cli;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	788 int fd, ret = -1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	789
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	790 if ((fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	791 dbg("SEND APP: sock failed.\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	792 return ret;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	793 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	794 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &set, sizeof(set));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	795
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	796 memset(&cli, 0, sizeof(cli));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	797 cli.sin_family = AF_INET;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	798 cli.sin_port = htons(DHCPC_CLIENT_PORT);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	799 cli.sin_addr.s_addr = state->pdhcp.ciaddr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	800 if (bind(fd, (struct sockaddr *)&cli, sizeof(cli)) == -1) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	801 dbg("SEND APP: bind failed.\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	802 goto error_fd;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	803 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	804 memset(&cli, 0, sizeof(cli));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	805 cli.sin_family = AF_INET;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	806 cli.sin_port = htons(DHCPC_SERVER_PORT);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	807 cli.sin_addr.s_addr = state->serverid.s_addr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	808 if (connect(fd, (struct sockaddr *)&cli, sizeof(cli)) == -1) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	809 dbg("SEND APP: connect failed.\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	810 goto error_fd;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	811 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	812 int padding = 308 - 1 - dhcp_opt_size(state->pdhcp.options);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	813 if((ret = write(fd, &state->pdhcp, sizeof(dhcp_msg_t) - padding)) < 0) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	814 dbg("SEND APP: write failed error %d\n", ret);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	815 goto error_fd;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	816 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	817 dbg("SEND APP: write success wrote %d\n", ret);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	818 error_fd:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	819 close(fd);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	820 return ret;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	821 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	822
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	823 // Generic signal handler real handling is done in main funcrion.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	824 static void signal_handler(int sig)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	825 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	826 unsigned char ch = sig;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	827 if (write(sigfd.wr, &ch, 1) != 1) dbg("can't send signal\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	828 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	829
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	830 // signal setup for SIGUSR1 SIGUSR2 SIGTERM
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	831 static int setup_signal()
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	832 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	833 if (pipe((int *)&sigfd) < 0) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	834 dbg("signal pipe failed\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	835 return -1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	836 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	837 fcntl(sigfd.wr , F_SETFD, FD_CLOEXEC);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	838 fcntl(sigfd.rd , F_SETFD, FD_CLOEXEC);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	839 int flags = fcntl(sigfd.wr, F_GETFL);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	840 fcntl(sigfd.wr, F_SETFL, flags \| O_NONBLOCK);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	841 signal(SIGUSR1, signal_handler);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	842 signal(SIGUSR2, signal_handler);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	843 signal(SIGTERM, signal_handler);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	844
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	845 return 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	846 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	847
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	848 // adds client id to dhcp packet
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	849 static uint8_t dhcpc_addclientid(uint8_t optptr)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	850 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	851 *optptr++ = DHCP_OPTION_CLIENTID;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	852 *optptr++ = 7;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	853 *optptr++ = 1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	854 memcpy(optptr, &state->macaddr, 6);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	855 return optptr + 6;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	856 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	857
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	858 // adds messege type to dhcp packet
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	859 static uint8_t dhcpc_addmsgtype(uint8_t optptr, uint8_t type)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	860 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	861 *optptr++ = DHCP_OPTION_MSG_TYPE;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	862 *optptr++ = 1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	863 *optptr++ = type;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	864 return optptr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	865 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	866
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	867 // adds max size to dhcp packet
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	868 static uint8_t dhcpc_addmaxsize(uint8_t optptr, uint16_t size)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	869 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	870 *optptr++ = DHCP_OPTION_MAX_SIZE;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	871 *optptr++ = 2;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	872 memcpy(optptr, &size, 2);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	873 return optptr + 2;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	874 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	875
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	876 static uint8_t dhcpc_addstropt(uint8_t optptr, uint8_t opcode, char* str, int len)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	877 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	878 *optptr++ = opcode;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	879 *optptr++ = len;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	880 memcpy(optptr, str, len);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	881 return optptr + len;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	882 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	883
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	884 // adds server id to dhcp packet.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	885 static uint8_t dhcpc_addserverid(struct in_addr serverid, uint8_t *optptr)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	886 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	887 *optptr++ = DHCP_OPTION_SERVER_ID;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	888 *optptr++ = 4;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	889 memcpy(optptr, &serverid->s_addr, 4);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	890 return optptr + 4;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	891 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	892
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	893 // adds requested ip address to dhcp packet.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	894 static uint8_t dhcpc_addreqipaddr(struct in_addr ipaddr, uint8_t *optptr)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	895 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	896 *optptr++ = DHCP_OPTION_REQ_IPADDR;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	897 *optptr++ = 4;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	898 memcpy(optptr, &ipaddr->s_addr, 4);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	899 return optptr + 4;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	900 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	901
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	902 // adds hostname to dhcp packet.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	903 static uint8_t dhcpc_addfdnname(uint8_t optptr, char *hname)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	904 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	905 int size = strlen(hname);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	906 *optptr++ = DHCP_OPTION_FQDN;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	907 *optptr++ = size + 3;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	908 *optptr++ = 0x1; //flags
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	909 optptr += 2; // two blank bytes
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	910 strncpy((char*)optptr, hname, size); // name
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	911 return optptr + size;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	912 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	913
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	914 // adds request options using -o,-O flag to dhcp packet
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	915 static uint8_t dhcpc_addreqoptions(uint8_t optptr)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	916 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	917 uint8_t *len;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	918
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	919 *optptr++ = DHCP_OPTION_REQ_LIST;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	920 len = optptr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	921 *len = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	922 optptr++;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	923
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	924 if (!flag_chk(FLAG_o)) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	925 *len = 4;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	926 *optptr++ = DHCP_OPTION_SUBNET_MASK;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	927 *optptr++ = DHCP_OPTION_ROUTER;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	928 *optptr++ = DHCP_OPTION_DNS_SERVER;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	929 *optptr++ = DHCP_OPTION_BROADCAST;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	930 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	931 if (flag_chk(FLAG_O)) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	932 memcpy(optptr++, raw_opt, raw_optcount);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	933 *len += raw_optcount;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	934 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	935 return optptr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	936 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	937
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	938 static uint8_t dhcpc_addend(uint8_t optptr)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	939 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	940 *optptr++ = DHCP_OPTION_END;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	941 return optptr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	942 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	943
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	944 // Sets values of -x options in dhcp discover and request packet.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	945 static uint8_t* set_xopt(uint8_t *optptr)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	946 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	947 int count;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	948 int size = ARRAY_LEN(options_list);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	949 for (count = 0; count < size; count++) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	950 if ((options_list[count].len == 0) \|\| (options_list[count].val == NULL)) continue;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	951 *optptr++ = (uint8_t) (options_list[count].code & 0x00FF);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	952 *optptr++ = (uint8_t) options_list[count].len;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	953 memcpy(optptr, options_list[count].val, options_list[count].len);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	954 optptr += options_list[count].len;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	955 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	956 return optptr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	957 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	958
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	959 static uint32_t get_option_serverid (uint8_t opt, dhcpc_result_t presult)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	960 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	961 uint32_t var = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	962 while (*opt != DHCP_OPTION_SERVER_ID) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	963 if (*opt == DHCP_OPTION_END) return var;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	964 opt += opt[1] + 2;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	965 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	966 memcpy(&var, opt+2, sizeof(uint32_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	967 state->serverid.s_addr = var;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	968 presult->serverid.s_addr = state->serverid.s_addr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	969 presult->serverid.s_addr = ntohl(presult->serverid.s_addr);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	970 return var;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	971 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	972
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	973 static uint8_t get_option_msgtype(uint8_t *opt)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	974 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	975 uint32_t var = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	976 while (*opt != DHCP_OPTION_MSG_TYPE) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	977 if (*opt == DHCP_OPTION_END) return var;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	978 opt += opt[1] + 2;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	979 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	980 memcpy(&var, opt+2, sizeof(uint8_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	981 return var;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	982 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	983
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	984 static uint8_t get_option_lease(uint8_t opt, dhcpc_result_t presult)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	985 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	986 uint32_t var = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	987 while (*opt != DHCP_OPTION_LEASE_TIME) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	988 if (*opt == DHCP_OPTION_END) return var;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	989 opt += opt[1] + 2;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	990 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	991 memcpy(&var, opt+2, sizeof(uint32_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	992 var = htonl(var);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	993 presult->lease_time = var;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	994 return var;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	995 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	996
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	997
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	998 // sends dhcp msg of MSGTYPE
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	999 static int dhcpc_sendmsg(int msgtype)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1000 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1001 uint8_t *pend;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1002 struct in_addr rqsd;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1003 char *vendor;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1004
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1005 // Create the common message header settings
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1006 memset(&state->pdhcp, 0, sizeof(dhcp_msg_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1007 state->pdhcp.op = DHCP_REQUEST;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1008 state->pdhcp.htype = DHCP_HTYPE_ETHERNET;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1009 state->pdhcp.hlen = 6;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1010 state->pdhcp.xid = xid;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1011 memcpy(state->pdhcp.chaddr, state->macaddr, 6);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1012 memset(&state->pdhcp.chaddr[6], 0, 10);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1013 state->pdhcp.cookie = htonl(DHCP_MAGIC);;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1014
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1015 // Add the common header options
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1016 pend = state->pdhcp.options;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1017 pend = dhcpc_addmsgtype(pend, msgtype);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1018
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1019 if (!flag_chk(FLAG_C)) pend = dhcpc_addclientid(pend);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1020 // Handle the message specific settings
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1021 switch (msgtype) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1022 case DHCPDISCOVER: // Broadcast DISCOVER message to all servers
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1023 state->pdhcp.flags = htons(BOOTP_BROADCAST); // Broadcast bit.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1024 if (flag_chk(FLAG_r)) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1025 inet_aton(TT.req_ip, &rqsd);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1026 pend = dhcpc_addreqipaddr(&rqsd, pend);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1027 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1028 pend = dhcpc_addmaxsize(pend, htons(sizeof(dhcp_raw_t)));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1029 vendor = flag_get(FLAG_V, TT.vendor_cls, "toybox\0");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1030 pend = dhcpc_addstropt(pend, DHCP_OPTION_VENDOR, vendor, strlen(vendor));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1031 if (flag_chk(FLAG_H)) pend = dhcpc_addstropt(pend, DHCP_OPTION_HOST_NAME, TT.hostname, strlen(TT.hostname));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1032 if (flag_chk(FLAG_F)) pend = dhcpc_addfdnname(pend, TT.fdn_name);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1033 if ((!flag_chk(FLAG_o)) \|\| flag_chk(FLAG_O)) pend = dhcpc_addreqoptions(pend);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1034 if (flag_chk(FLAG_x)) pend = set_xopt(pend);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1035 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1036 case DHCPREQUEST: // Send REQUEST message to the server that sent the first OFFER
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1037 state->pdhcp.flags = htons(BOOTP_BROADCAST); // Broadcast bit.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1038 if (state->status == STATE_RENEWING) memcpy(&state->pdhcp.ciaddr, &state->ipaddr.s_addr, 4);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1039 pend = dhcpc_addmaxsize(pend, htons(sizeof(dhcp_raw_t)));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1040 rqsd.s_addr = htonl(server);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1041 pend = dhcpc_addserverid(&rqsd, pend);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1042 pend = dhcpc_addreqipaddr(&state->ipaddr, pend);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1043 vendor = flag_get(FLAG_V, TT.vendor_cls, "toybox\0");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1044 pend = dhcpc_addstropt(pend, DHCP_OPTION_VENDOR, vendor, strlen(vendor));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1045 if (flag_chk(FLAG_H)) pend = dhcpc_addstropt(pend, DHCP_OPTION_HOST_NAME, TT.hostname, strlen(TT.hostname));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1046 if (flag_chk(FLAG_F)) pend = dhcpc_addfdnname(pend, TT.fdn_name);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1047 if ((!flag_chk(FLAG_o)) \|\| flag_chk(FLAG_O)) pend = dhcpc_addreqoptions(pend);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1048 if (flag_chk(FLAG_x)) pend = set_xopt(pend);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1049 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1050 case DHCPRELEASE: // Send RELEASE message to the server.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1051 memcpy(&state->pdhcp.ciaddr, &state->ipaddr.s_addr, 4);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1052 rqsd.s_addr = htonl(server);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1053 pend = dhcpc_addserverid(&rqsd, pend);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1054 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1055 default:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1056 return -1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1057 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1058 pend = dhcpc_addend(pend);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1059
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1060 if (state->mode == MODE_APP) return send_app();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1061 return send_raw();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1062 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1063
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1064 /*
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1065 * parses options from received dhcp packet at OPTPTR and
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1066 * stores result in PRESULT or MSGOPT_LIST
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1067 */
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1068 static uint8_t dhcpc_parseoptions(dhcpc_result_t presult, uint8_t optptr)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1069 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1070 uint8_t type = 0, *options, overloaded = 0;;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1071 uint16_t flag = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1072 uint32_t convtmp = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1073 char dest, pfx;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1074 struct in_addr addr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1075 int count, optlen, size = ARRAY_LEN(options_list);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1076
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1077 if (flag_chk(FLAG_x)) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1078 if(msgopt_list){
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1079 for (count = 0; count < size; count++){
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1080 if(msgopt_list[count].val) free(msgopt_list[count].val);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1081 msgopt_list[count].val = NULL;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1082 msgopt_list[count].len = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1083 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1084 } else {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1085 msgopt_list = xmalloc(sizeof(options_list));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1086 memcpy(msgopt_list, options_list, sizeof(options_list));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1087 for (count = 0; count < size; count++) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1088 msgopt_list[count].len = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1089 msgopt_list[count].val = NULL;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1090 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1091 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1092 } else {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1093 msgopt_list = options_list;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1094 for (count = 0; count < size; count++) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1095 msgopt_list[count].len = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1096 if(msgopt_list[count].val) free(msgopt_list[count].val);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1097 msgopt_list[count].val = NULL;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1098 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1099 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1100
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1101 while (*optptr != DHCP_OPTION_END) {
1294 88abd5b68a17 dhcp client had a segfault, when DHCP message contained 'pad' option. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: 1104 diff changeset	1102 if (*optptr == DHCP_OPTION_PADDING) {
88abd5b68a17 dhcp client had a segfault, when DHCP message contained 'pad' option. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: 1104 diff changeset	1103 optptr++;
88abd5b68a17 dhcp client had a segfault, when DHCP message contained 'pad' option. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: 1104 diff changeset	1104 continue;
88abd5b68a17 dhcp client had a segfault, when DHCP message contained 'pad' option. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: 1104 diff changeset	1105 }
1005 03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1106 if (*optptr == DHCP_OPTION_OVERLOAD) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1107 overloaded = optptr[2];
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1108 optptr += optptr[1] + 2;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1109 continue;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1110 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1111 for (count = 0, flag = 0; count < size; count++) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1112 if ((msgopt_list[count].code & 0X00FF) == *optptr) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1113 flag = (msgopt_list[count].code & 0XFF00);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1114 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1115 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1116 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1117 switch (flag) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1118 case DHCP_NUM32:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1119 memcpy(&convtmp, &optptr[2], sizeof(uint32_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1120 convtmp = htonl(convtmp);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1121 sprintf(toybuf, "%u", convtmp);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1122 msgopt_list[count].val = strdup(toybuf);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1123 msgopt_list[count].len = strlen(toybuf);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1124 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1125 case DHCP_NUM16:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1126 memcpy(&convtmp, &optptr[2], sizeof(uint16_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1127 convtmp = htons(convtmp);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1128 sprintf(toybuf, "%u", convtmp);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1129 msgopt_list[count].val = strdup(toybuf);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1130 msgopt_list[count].len = strlen(toybuf);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1131 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1132 case DHCP_NUM8:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1133 memcpy(&convtmp, &optptr[2], sizeof(uint8_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1134 sprintf(toybuf, "%u", convtmp);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1135 msgopt_list[count].val = strdup(toybuf);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1136 msgopt_list[count].len = strlen(toybuf);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1137 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1138 case DHCP_IP:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1139 memcpy(&convtmp, &optptr[2], sizeof(uint32_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1140 addr.s_addr = convtmp;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1141 sprintf(toybuf, "%s", inet_ntoa(addr));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1142 msgopt_list[count].val = strdup(toybuf);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1143 msgopt_list[count].len = strlen(toybuf);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1144 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1145 case DHCP_STRING:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1146 sprintf(toybuf, "%.*s", optptr[1], &optptr[2]);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1147 msgopt_list[count].val = strdup(toybuf);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1148 msgopt_list[count].len = strlen(toybuf);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1149 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1150 case DHCP_IPLIST:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1151 optlen = optptr[1];
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1152 dest = toybuf;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1153 while (optlen) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1154 memcpy(&convtmp, &optptr[2], sizeof(uint32_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1155 addr.s_addr = convtmp;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1156 dest += sprintf(dest, "%s ", inet_ntoa(addr));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1157 optlen -= 4;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1158 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1159 *(dest - 1) = '\0';
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1160 msgopt_list[count].val = strdup(toybuf);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1161 msgopt_list[count].len = strlen(toybuf);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1162 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1163 case DHCP_STRLST: //FIXME: do smthing.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1164 case DHCP_IPPLST:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1165 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1166 case DHCP_STCRTS:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1167 pfx = "";
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1168 dest = toybuf;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1169 options = &optptr[2];
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1170 optlen = optptr[1];
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1171
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1172 while (optlen >= 1 + 4) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1173 uint32_t nip = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1174 int bytes;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1175 uint8_t *p_tmp;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1176 unsigned mask = *options;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1177
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1178 if (mask > 32) break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1179 optlen--;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1180 p_tmp = (void*) &nip;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1181 bytes = (mask + 7) / 8;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1182 while (--bytes >= 0) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1183 p_tmp++ = options++;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1184 optlen--;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1185 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1186 if (optlen < 4) break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1187 dest += sprintf(dest, "%s%u.%u.%u.%u", pfx, ((uint8_t*) &nip)[0],
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1188 ((uint8_t) &nip)[1], ((uint8_t) &nip)[2], ((uint8_t*) &nip)[3]);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1189 pfx = " ";
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1190 dest += sprintf(dest, "/%u ", mask);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1191 dest += sprintf(dest, "%u.%u.%u.%u", options[0], options[1], options[2], options[3]);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1192 options += 4;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1193 optlen -= 4;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1194 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1195 msgopt_list[count].val = strdup(toybuf);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1196 msgopt_list[count].len = strlen(toybuf);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1197 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1198 default: break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1199 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1200 optptr += optptr[1] + 2;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1201 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1202 if ((overloaded == 1) \|\| (overloaded == 3)) dhcpc_parseoptions(presult, optptr);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1203 if ((overloaded == 2) \|\| (overloaded == 3)) dhcpc_parseoptions(presult, optptr);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1204 return type;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1205 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1206
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1207 // parses recvd messege to check that it was for us.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1208 static uint8_t dhcpc_parsemsg(dhcpc_result_t *presult)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1209 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1210 if (state->pdhcp.op == DHCP_REPLY
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1211 && !memcmp(state->pdhcp.chaddr, state->macaddr, 6)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1212 && !memcmp(&state->pdhcp.xid, &xid, sizeof(xid))) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1213 memcpy(&presult->ipaddr.s_addr, &state->pdhcp.yiaddr, 4);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1214 presult->ipaddr.s_addr = ntohl(presult->ipaddr.s_addr);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1215 return get_option_msgtype(state->pdhcp.options);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1216 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1217 return 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1218 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1219
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1220 // Sends a IP renew request.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1221 static void renew(void)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1222 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1223 infomsg(infomode, "Performing a DHCP renew");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1224 switch (state->status) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1225 case STATE_INIT:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1226 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1227 case STATE_BOUND:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1228 mode_raw();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1229 case STATE_RENEWING: // FALLTHROUGH
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1230 case STATE_REBINDING: // FALLTHROUGH
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1231 state->status = STATE_RENEW_REQUESTED;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1232 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1233 case STATE_RENEW_REQUESTED:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1234 run_script(NULL, "deconfig");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1235 case STATE_REQUESTING: // FALLTHROUGH
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1236 case STATE_RELEASED: // FALLTHROUGH
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1237 mode_raw();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1238 state->status = STATE_INIT;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1239 break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1240 default: break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1241 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1242 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1243
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1244 // Sends a IP release request.
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1245 static void release(void)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1246 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1247 int len = sizeof("255.255.255.255\0");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1248 char buffer[len];
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1249 struct in_addr temp_addr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1250
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1251 mode_app();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1252 // send release packet
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1253 if (state->status == STATE_BOUND \|\| state->status == STATE_RENEWING \|\| state->status == STATE_REBINDING) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1254 temp_addr.s_addr = htonl(server);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1255 strncpy(buffer, inet_ntoa(temp_addr), sizeof(buffer));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1256 buffer[len - 1] = '\0';
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1257 temp_addr.s_addr = state->ipaddr.s_addr;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1258 infomsg( infomode, "Unicasting a release of %s to %s", inet_ntoa(temp_addr), buffer);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1259 dhcpc_sendmsg(DHCPRELEASE);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1260 run_script(NULL, "deconfig");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1261 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1262 infomsg(infomode, "Entering released state");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1263 close(state->sockfd);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1264 state->sockfd = -1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1265 state->mode = MODE_OFF;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1266 state->status = STATE_RELEASED;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1267 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1268
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1269 static void free_option_stores(void)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1270 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1271 int count, size = ARRAY_LEN(options_list);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1272 for (count = 0; count < size; count++)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1273 if (options_list[count].val) free(options_list[count].val);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1274 if(flag_chk(FLAG_x)){
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1275 for (count = 0; count < size; count++)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1276 if (msgopt_list[count].val) free(msgopt_list[count].val);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1277 free(msgopt_list);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1278 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1279 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1280
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1281 void dhcp_main(void)
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1282 {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1283 struct timeval tv;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1284 int retval, bufflen = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1285 dhcpc_result_t result;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1286 uint8_t packets = 0, retries = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1287 uint32_t timeout = 0, waited = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1288 fd_set rfds;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1289
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1290 xid = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1291 setlinebuf(stdout);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1292 dbg = dummy;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1293 if (flag_chk(FLAG_v)) dbg = xprintf;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1294 if (flag_chk(FLAG_p)) write_pid(TT.pidfile);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1295 retries = flag_get(FLAG_t, TT.retries, 3);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1296 if (flag_chk(FLAG_S)) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1297 openlog("UDHCPC :", LOG_PID, LOG_DAEMON);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1298 infomode \|= LOG_SYSTEM;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1299 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1300 infomsg(infomode, "dhcp started");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1301 if (flag_chk(FLAG_O)) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1302 while (TT.req_opt) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1303 raw_opt[raw_optcount] = (uint8_t) strtoopt(TT.req_opt->arg, 1);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1304 raw_optcount++;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1305 TT.req_opt = TT.req_opt->next;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1306 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1307 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1308 if (flag_chk(FLAG_x)) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1309 while (TT.pkt_opt) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1310 (void) strtoopt(TT.pkt_opt->arg, 0);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1311 TT.pkt_opt = TT.pkt_opt->next;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1312 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1313 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1314 memset(&result, 0, sizeof(dhcpc_result_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1315 state = (dhcpc_state_t*) xmalloc(sizeof(dhcpc_state_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1316 memset(state, 0, sizeof(dhcpc_state_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1317 state->iface = flag_get(FLAG_i, TT.iface, "eth0");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1318
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1319 if (get_interface(state->iface, &state->ifindex, NULL, state->macaddr))
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1320 perror_exit("Failed to get interface %s", state->iface);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1321
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1322 run_script(NULL, "deconfig");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1323 setup_signal();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1324 state->status = STATE_INIT;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1325 mode_raw();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1326 fcntl(state->sockfd, F_SETFD, FD_CLOEXEC);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1327
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1328 for (;;) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1329 FD_ZERO(&rfds);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1330 if (state->sockfd >= 0) FD_SET(state->sockfd, &rfds);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1331 FD_SET(sigfd.rd, &rfds);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1332 tv.tv_sec = timeout - waited;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1333 tv.tv_usec = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1334 retval = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1335
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1336 int maxfd = (sigfd.rd > state->sockfd)? sigfd.rd : state->sockfd;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1337 dbg("select wait ....\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1338 uint32_t timestmp = time(NULL);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1339 if((retval = select(maxfd + 1, &rfds, NULL, NULL, &tv)) < 0) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1340 if (errno == EINTR) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1341 waited += (unsigned) time(NULL) - timestmp;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1342 continue;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1343 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1344 perror_exit("Error in select");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1345 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1346 if (!retval) { // Timed out
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1347 if (get_interface(state->iface, &state->ifindex, NULL, state->macaddr))
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1348 error_exit("Interface lost %s\n", state->iface);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1349
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1350 switch (state->status) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1351 case STATE_INIT:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1352 if (packets < retries) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1353 if (!packets) xid = getxid();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1354 run_script(NULL, "deconfig");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1355 infomsg(infomode, "Sending discover...");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1356 dhcpc_sendmsg(DHCPDISCOVER);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1357 server = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1358 timeout = flag_get(FLAG_T, TT.timeout, 3);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1359 waited = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1360 packets++;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1361 continue;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1362 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1363 lease_fail:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1364 run_script(NULL,"leasefail");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1365 if (flag_chk(FLAG_n)) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1366 infomsg(infomode, "Lease failed. Exiting");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1367 goto ret_with_sockfd;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1368 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1369 if (flag_chk(FLAG_b)) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1370 infomsg(infomode, "Lease failed. Going Daemon mode");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1371 dhcp_daemon();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1372 if (flag_chk(FLAG_p)) write_pid(TT.pidfile);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1373 toys.optflags &= ~FLAG_b;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1374 toys.optflags \|= FLAG_f;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1375 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1376 timeout = flag_get(FLAG_A, TT.tryagain, 20);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1377 waited = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1378 packets = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1379 continue;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1380 case STATE_REQUESTING:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1381 if (packets < retries) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1382 memcpy(&state->ipaddr.s_addr,&state->pdhcp.yiaddr, 4);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1383 dhcpc_sendmsg(DHCPREQUEST);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1384 infomsg(infomode, "Sending select for %d.%d.%d.%d...",
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1385 (result.ipaddr.s_addr >> 24) & 0xff, (result.ipaddr.s_addr >> 16) & 0xff, (result.ipaddr.s_addr >> 8) & 0xff, (result.ipaddr.s_addr) & 0xff);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1386 timeout = flag_get(FLAG_T, TT.timeout, 3);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1387 waited = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1388 packets++;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1389 continue;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1390 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1391 mode_raw();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1392 state->status = STATE_INIT;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1393 goto lease_fail;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1394 case STATE_BOUND:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1395 state->status = STATE_RENEWING;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1396 dbg("Entering renew state\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1397 // FALLTHROUGH
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1398 case STATE_RENEW_REQUESTED: // FALLTHROUGH
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1399 case STATE_RENEWING:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1400 renew_requested:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1401 if (timeout > 60) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1402 dhcpc_sendmsg(DHCPREQUEST);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1403 timeout >>= 1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1404 waited = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1405 continue;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1406 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1407 dbg("Entering rebinding state\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1408 state->status = STATE_REBINDING;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1409 // FALLTHROUGH
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1410 case STATE_REBINDING:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1411 mode_raw();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1412 if (timeout > 0) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1413 dhcpc_sendmsg(DHCPREQUEST);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1414 timeout >>= 1;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1415 waited = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1416 continue;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1417 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1418 infomsg(infomode, "Lease lost, entering INIT state");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1419 run_script(NULL, "deconfig");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1420 state->status = STATE_INIT;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1421 timeout = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1422 waited = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1423 packets = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1424 continue;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1425 default: break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1426 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1427 timeout = INT_MAX;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1428 waited = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1429 continue;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1430 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1431 if (FD_ISSET(sigfd.rd, &rfds)) { // Some Activity on RDFDs : is signal
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1432 unsigned char sig;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1433 if (read(sigfd.rd, &sig, 1) != 1) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1434 dbg("signal read failed.\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1435 continue;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1436 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1437 switch (sig) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1438 case SIGUSR1:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1439 infomsg(infomode, "Received SIGUSR1");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1440 renew();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1441 packets = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1442 waited = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1443 if (state->status == STATE_RENEW_REQUESTED) goto renew_requested;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1444 if (state->status == STATE_INIT) timeout = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1445 continue;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1446 case SIGUSR2:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1447 infomsg(infomode, "Received SIGUSR2");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1448 release();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1449 timeout = INT_MAX;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1450 waited = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1451 packets = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1452 continue;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1453 case SIGTERM:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1454 infomsg(infomode, "Received SIGTERM");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1455 if (flag_chk(FLAG_R)) release();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1456 goto ret_with_sockfd;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1457 default: break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1458 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1459 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1460 if (FD_ISSET(state->sockfd, &rfds)) { // Some Activity on RDFDs : is socket
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1461 dbg("main sock read\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1462 uint8_t msgType;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1463 if (state->mode == MODE_RAW) bufflen = read_raw();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1464 if (state->mode == MODE_APP) bufflen = read_app();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1465 if (bufflen < 0) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1466 if (state->mode == MODE_RAW) mode_raw();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1467 if (state->mode == MODE_APP) mode_app();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1468 continue;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1469 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1470 waited += time(NULL) - timestmp;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1471 memset(&result, 0, sizeof(dhcpc_result_t));
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1472 msgType = dhcpc_parsemsg(&result);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1473 if (msgType != DHCPNAK && result.ipaddr.s_addr == 0 ) continue; // no ip for me ignore
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1474 if (!msgType \|\| !get_option_serverid(state->pdhcp.options, &result)) continue; //no server id ignore
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1475 if (msgType == DHCPOFFER && server == 0) server = result.serverid.s_addr; // select the server
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1476 if (result.serverid.s_addr != server) continue; // not from the server we requested ignore
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1477 dhcpc_parseoptions(&result, state->pdhcp.options);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1478 get_option_lease(state->pdhcp.options, &result);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1479
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1480 switch (state->status) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1481 case STATE_INIT:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1482 if (msgType == DHCPOFFER) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1483 state->status = STATE_REQUESTING;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1484 mode_raw();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1485 timeout = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1486 waited = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1487 packets = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1488 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1489 continue;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1490 case STATE_REQUESTING: // FALLTHROUGH
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1491 case STATE_RENEWING: // FALLTHROUGH
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1492 case STATE_RENEW_REQUESTED: // FALLTHROUGH
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1493 case STATE_REBINDING:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1494 if (msgType == DHCPACK) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1495 timeout = result.lease_time / 2;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1496 run_script(&result, state->status == STATE_REQUESTING ? "bound" : "renew");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1497 state->status = STATE_BOUND;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1498 infomsg(infomode, "Lease of %d.%d.%d.%d obtained, lease time %d from server %d.%d.%d.%d",
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1499 (result.ipaddr.s_addr >> 24) & 0xff, (result.ipaddr.s_addr >> 16) & 0xff, (result.ipaddr.s_addr >> 8) & 0xff, (result.ipaddr.s_addr) & 0xff,
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1500 result.lease_time,
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1501 (result.serverid.s_addr >> 24) & 0xff, (result.serverid.s_addr >> 16) & 0xff, (result.serverid.s_addr >> 8) & 0xff, (result.serverid.s_addr) & 0xff);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1502 if (flag_chk(FLAG_q)) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1503 if (flag_chk(FLAG_R)) release();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1504 goto ret_with_sockfd;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1505 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1506 toys.optflags &= ~FLAG_n;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1507 if (!flag_chk(FLAG_f)) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1508 dhcp_daemon();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1509 toys.optflags \|= FLAG_f;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1510 if (flag_chk(FLAG_p)) write_pid(TT.pidfile);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1511 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1512 waited = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1513 continue;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1514 } else if (msgType == DHCPNAK) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1515 dbg("NACK received.\n");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1516 run_script(&result, "nak");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1517 if (state->status != STATE_REQUESTING) run_script(NULL, "deconfig");
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1518 mode_raw();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1519 sleep(3);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1520 state->status = STATE_INIT;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1521 state->ipaddr.s_addr = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1522 server = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1523 timeout = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1524 packets = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1525 waited = 0;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1526 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1527 continue;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1528 default: break;
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1529 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1530 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1531 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1532 ret_with_sockfd:
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1533 if (CFG_TOYBOX_FREE) {
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1534 free_option_stores();
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1535 if (state->sockfd > 0) close(state->sockfd);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1536 free(state);
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1537 }
03f72b57a092 DHCP client and server, from Ashwini Sharma. Rob Landley <rob@landley.net> parents: diff changeset	1538 }

Mercurial > hg > toybox

annotate toys/pending/dhcp.c @ 1384:4a7438307429 draft