projects / mirror_frr.git / blame
| Commit | Line | Data |
|---|---|---|
| 96673e06 DL |
1 | /* |
| 2 | * FRR switchable defaults. | |
| 3 | * Copyright (c) 2017-2019 David Lamparter, for NetDEF, Inc. | |
| 4 | * | |
| 5 | * Permission to use, copy, modify, and distribute this software for any | |
| 6 | * purpose with or without fee is hereby granted, provided that the above | |
| 7 | * copyright notice and this permission notice appear in all copies. | |
| 8 | * | |
| 9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
| 10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
| 11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
| 12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
| 13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
| 14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
| 15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
| 16 | */ | |
| 17 | ||
| 18 | #include <zebra.h> | |
| 19 | ||
| 20 | #include "defaults.h" | |
| 21 | #include "libfrr.h" | |
| 22 | #include "version.h" | |
| 23 | ||
| 24 | static int version_value(int ch) | |
| 25 | { | |
| 26 | /* non-ASCII shouldn't happen */ | |
| 27 | if (ch < 0 || ch >= 128) | |
| 28 | return 2; | |
| 29 | ||
| 30 | /* ~foo sorts older than nothing */ | |
| 31 | if (ch == '~') | |
| 32 | return 0; | |
| 33 | if (ch == '\0') | |
| 34 | return 1; | |
| 35 | if (isalpha(ch)) | |
| 36 | return 0x100 + tolower(ch); | |
| 37 | ||
| 38 | /* punctuation and digits (and everything else) */ | |
| 39 | return 0x200 + ch; | |
| 40 | } | |
| 41 | ||
| 42 | int frr_version_cmp(const char *aa, const char *bb) | |
| 43 | { | |
| 44 | const char *apos = aa, *bpos = bb; | |
| 45 | ||
| 46 | /* || is correct, we won't scan past the end of a string since that | |
| 47 | * doesn't compare equal to anything else */ | |
| 48 | while (apos[0] || bpos[0]) { | |
| 49 | if (isdigit((unsigned char)apos[0]) && | |
| 50 | isdigit((unsigned char)bpos[0])) { | |
| 51 | unsigned long av, bv; | |
| 52 | char *aend = NULL, *bend = NULL; | |
| 53 | ||
| 54 | av = strtoul(apos, &aend, 10); | |
| 55 | bv = strtoul(bpos, &bend, 10); | |
| 56 | if (av < bv) | |
| 57 | return -1; | |
| 58 | if (av > bv) | |
| 59 | return 1; | |
| 60 | ||
| 61 | apos = aend; | |
| 62 | bpos = bend; | |
| 63 | continue; | |
| 64 | } | |
| 65 | ||
| 66 | int a = version_value(*apos++); | |
| 67 | int b = version_value(*bpos++); | |
| 68 | ||
| 69 | if (a < b) | |
| 70 | return -1; | |
| 71 | if (a > b) | |
| 72 | return 1; | |
| 73 | } | |
| 74 | return 0; | |
| 75 | } |