Mercurial > hg > toybox

annotate toys/posix/uudecode.c @ 1183:0752b2d58909 draft

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Rename xmsprintf() to just xmprintf(). Partly because there's no supplied target string ala sprintf, and partly because I can never remember what order the m and s go in.
author Rob Landley <rob@landley.net>
date Thu, 16 Jan 2014 09:26:50 -0600
parents 8a6b36696ca6
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
823
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
1 /* uudecode.c - uudecode / base64 decode
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
2 *
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
3 * Copyright 2013 Erich Plondke <toybox@erich.wreck.org>
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
4 *
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
5 * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/uudecode.html
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
6
835
89c65a45245a Incremental cleanup of uudecode.
Rob Landley <rob@landley.net>
parents: 834
diff changeset
7 USE_UUDECODE(NEWTOY(uudecode, ">1o:", TOYFLAG_USR|TOYFLAG_BIN|TOYFLAG_UMASK))
823
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
8
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
9 config UUDECODE
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
10 bool "uudecode"
840
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
11 default y
823
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
12 help
834
1c61f2827bf8 Fix the USE() macro around NEWTOY, tweak help text, remove unnecessary wrapper, tweak whitespace and curly brackets.
Rob Landley <rob@landley.net>
parents: 828
diff changeset
13 usage: uudecode [-o OUTFILE] [INFILE]
823
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
14
834
1c61f2827bf8 Fix the USE() macro around NEWTOY, tweak help text, remove unnecessary wrapper, tweak whitespace and curly brackets.
Rob Landley <rob@landley.net>
parents: 828
diff changeset
15 Decode file from stdin (or INFILE).
1c61f2827bf8 Fix the USE() macro around NEWTOY, tweak help text, remove unnecessary wrapper, tweak whitespace and curly brackets.
Rob Landley <rob@landley.net>
parents: 828
diff changeset
16
1c61f2827bf8 Fix the USE() macro around NEWTOY, tweak help text, remove unnecessary wrapper, tweak whitespace and curly brackets.
Rob Landley <rob@landley.net>
parents: 828
diff changeset
17 -o write to OUTFILE instead of filename in header
823
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
18 */
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
19
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
20 #define FOR_uudecode
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
21 #include "toys.h"
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
22
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
23 GLOBALS(
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
24 char *o;
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
25 )
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
26
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
27 void uudecode_main(void)
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
28 {
840
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
29 int ifd = 0, ofd, idx = 0, m = m;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
30 char *line = 0, mode[16],
839
a315fb343e2b More uudecode cleanup.
Rob Landley <rob@landley.net>
parents: 838
diff changeset
31 *class[] = {"begin%*[ ]%15s%*[ ]%n", "begin-base64%*[ ]%15s%*[ ]%n"};
a315fb343e2b More uudecode cleanup.
Rob Landley <rob@landley.net>
parents: 838
diff changeset
32
835
89c65a45245a Incremental cleanup of uudecode.
Rob Landley <rob@landley.net>
parents: 834
diff changeset
33 if (toys.optc) ifd = xopen(*toys.optargs, O_RDONLY);
834
1c61f2827bf8 Fix the USE() macro around NEWTOY, tweak help text, remove unnecessary wrapper, tweak whitespace and curly brackets.
Rob Landley <rob@landley.net>
parents: 828
diff changeset
34
840
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
35 while (!idx) {
839
a315fb343e2b More uudecode cleanup.
Rob Landley <rob@landley.net>
parents: 838
diff changeset
36 free(line);
a315fb343e2b More uudecode cleanup.
Rob Landley <rob@landley.net>
parents: 838
diff changeset
37 if (!(line = get_line(ifd))) error_exit("bad EOF");
840
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
38 for (m=0; m < 2; m++) {
839
a315fb343e2b More uudecode cleanup.
Rob Landley <rob@landley.net>
parents: 838
diff changeset
39 sscanf(line, class[m], mode, &idx);
a315fb343e2b More uudecode cleanup.
Rob Landley <rob@landley.net>
parents: 838
diff changeset
40 if (idx) break;
835
89c65a45245a Incremental cleanup of uudecode.
Rob Landley <rob@landley.net>
parents: 834
diff changeset
41 }
89c65a45245a Incremental cleanup of uudecode.
Rob Landley <rob@landley.net>
parents: 834
diff changeset
42 }
89c65a45245a Incremental cleanup of uudecode.
Rob Landley <rob@landley.net>
parents: 834
diff changeset
43
840
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
44 ofd = xcreate(TT.o ? TT.o : line+idx, O_WRONLY|O_CREAT|O_TRUNC,
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
45 string_to_mode(mode, 0777^toys.old_umask));
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
46
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
47 for(;;) {
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
48 char *in, *out;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
49 int olen;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
50
839
a315fb343e2b More uudecode cleanup.
Rob Landley <rob@landley.net>
parents: 838
diff changeset
51 free(line);
840
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
52 if (m == 2 || !(line = get_line(ifd))) break;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
53 if (!strcmp(line, m ? "====" : "end")) {
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
54 m = 2;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
55 continue;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
56 }
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
57
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
58 olen = 0;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
59 in = out = line;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
60 if (!m) olen = (*(in++) - 32) & 0x3f;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
61
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
62 for (;;) {
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
63 int i = 0, x = 0, len = 4;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
64 char c = 0;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
65
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
66 if (!m) {
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
67 if (olen < 1) break;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
68 if (olen < 3) len = olen + 1;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
69 }
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
70
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
71 while (i < len) {
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
72 if (!(c = *(in++))) goto line_done;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
73
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
74 if (m) {
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
75 if (c == '=') {
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
76 len--;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
77 continue;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
78 } else if (len != 4) break;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
79
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
80 if (c >= 'A' && c <= 'Z') c -= 'A';
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
81 else if (c >= 'a' && c <= 'z') c += 26 - 'a';
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
82 else if (c >= '0' && c <= '9') c += 52 - '0';
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
83 else if (c == '+') c = 62;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
84 else if (c == '/') c = 63;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
85 else continue;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
86 } else c = (c - 32) & 0x3f;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
87
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
88 x |= c << (6*(3-i));
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
89
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
90 if (i && i < len) {
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
91 *(out++) = (x>>(8*(3-i))) & 0xff;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
92 olen--;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
93 }
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
94 i++;
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
95 }
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
96
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
97 if (i && i!=len) error_exit("bad %s", line);
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
98 }
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
99 line_done:
8a6b36696ca6 Clean uudecode up the rest of the way, move pending->posix and default y.
Rob Landley <rob@landley.net>
parents: 839
diff changeset
100 xwrite(ofd, line, out-line);
839
a315fb343e2b More uudecode cleanup.
Rob Landley <rob@landley.net>
parents: 838
diff changeset
101 }
a315fb343e2b More uudecode cleanup.
Rob Landley <rob@landley.net>
parents: 838
diff changeset
102
835
89c65a45245a Incremental cleanup of uudecode.
Rob Landley <rob@landley.net>
parents: 834
diff changeset
103 if (CFG_TOYBOX_FREE) {
89c65a45245a Incremental cleanup of uudecode.
Rob Landley <rob@landley.net>
parents: 834
diff changeset
104 if (ifd) close(ifd);
89c65a45245a Incremental cleanup of uudecode.
Rob Landley <rob@landley.net>
parents: 834
diff changeset
105 close(ofd);
89c65a45245a Incremental cleanup of uudecode.
Rob Landley <rob@landley.net>
parents: 834
diff changeset
106 }
823
0429050a224b uuencode and uudecode by Erich Plondke.
Rob Landley <rob@landley.net>
parents:
diff changeset
107 }