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comparison toys/other/ifconfig.c @ 1257:eb19245b94b6 draft

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An issue in ifconfig while verifying the HW Address, which is assumed to be of the format __C2:79:38:95:CD:AB__ but can be of form __C2:79:38:95:D:A__. In this case the HW address is reported as bad.
author Ashwini sharma <ak.ashwini1981@gmail.com>
date Sun, 13 Apr 2014 16:04:16 -0500
parents 1aa9b7f39e4a
children 00c20f410c46
comparison
equal deleted inserted replaced
1256:2fe64bc16a61 1257:eb19245b94b6
413 while (*hw_addr && (p-ptr) < count) { 413 while (*hw_addr && (p-ptr) < count) {
414 int val, len = 0; 414 int val, len = 0;
415 415
416 if (*hw_addr == ':') hw_addr++; 416 if (*hw_addr == ':') hw_addr++;
417 sscanf(hw_addr, "%2x%n", &val, &len); 417 sscanf(hw_addr, "%2x%n", &val, &len);
418 if (len != 2) break; 418 if (!len || len > 2) break; // 1 nibble can be set e.g. C2:79:38:95:D:A
419 hw_addr += len; 419 hw_addr += len;
420 *p++ = val; 420 *p++ = val;
421 } 421 }
422 422
423 if ((p-ptr) != count || *hw_addr) 423 if ((p-ptr) != count || *hw_addr)