2 13b2bc37 2022-10-23 stsp * Copyright (c) 2018, 2019 Stefan Sperling <stsp@openbsd.org>
4 13b2bc37 2022-10-23 stsp * Permission to use, copy, modify, and distribute this software for any
5 13b2bc37 2022-10-23 stsp * purpose with or without fee is hereby granted, provided that the above
6 13b2bc37 2022-10-23 stsp * copyright notice and this permission notice appear in all copies.
8 13b2bc37 2022-10-23 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 13b2bc37 2022-10-23 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 13b2bc37 2022-10-23 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 13b2bc37 2022-10-23 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 13b2bc37 2022-10-23 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 13b2bc37 2022-10-23 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 13b2bc37 2022-10-23 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 13b2bc37 2022-10-23 stsp #include <sys/types.h>
18 13b2bc37 2022-10-23 stsp #include <sys/queue.h>
20 13b2bc37 2022-10-23 stsp #include <ctype.h>
21 13b2bc37 2022-10-23 stsp #include <string.h>
23 13b2bc37 2022-10-23 stsp #include "got_reference.h"
25 13b2bc37 2022-10-23 stsp #include "got_lib_lockfile.h"
27 13b2bc37 2022-10-23 stsp #ifndef nitems
28 13b2bc37 2022-10-23 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
32 13b2bc37 2022-10-23 stsp got_ref_name_is_valid(const char *name)
34 13b2bc37 2022-10-23 stsp const char *s, *seg;
35 13b2bc37 2022-10-23 stsp const char forbidden[] = { ' ', '~', '^', ':', '?', '*', '[' , '\\' };
36 13b2bc37 2022-10-23 stsp const char *forbidden_seq[] = { "//", "..", "@{" };
37 13b2bc37 2022-10-23 stsp const char *lfs = GOT_LOCKFILE_SUFFIX;
38 13b2bc37 2022-10-23 stsp const size_t lfs_len = sizeof(GOT_LOCKFILE_SUFFIX) - 1;
41 13b2bc37 2022-10-23 stsp if (name[0] == '@' && name[1] == '\0')
46 13b2bc37 2022-10-23 stsp if (seg[0] == '\0' || seg[0] == '.' || seg[0] == '/')
48 13b2bc37 2022-10-23 stsp while (*s) {
49 13b2bc37 2022-10-23 stsp for (i = 0; i < nitems(forbidden); i++) {
50 13b2bc37 2022-10-23 stsp if (*s == forbidden[i])
53 13b2bc37 2022-10-23 stsp for (i = 0; i < nitems(forbidden_seq); i++) {
54 13b2bc37 2022-10-23 stsp if (s[0] == forbidden_seq[i][0] &&
55 13b2bc37 2022-10-23 stsp s[1] == forbidden_seq[i][1])
58 13b2bc37 2022-10-23 stsp if (iscntrl((unsigned char)s[0]))
60 13b2bc37 2022-10-23 stsp if (s[0] == '.' && s[1] == '\0')
62 13b2bc37 2022-10-23 stsp if (*s == '/') {
63 13b2bc37 2022-10-23 stsp const char *nextseg = s + 1;
64 13b2bc37 2022-10-23 stsp if (nextseg[0] == '\0' || nextseg[0] == '.' ||
65 13b2bc37 2022-10-23 stsp nextseg[0] == '/')
67 13b2bc37 2022-10-23 stsp if (seg <= s - lfs_len &&
68 13b2bc37 2022-10-23 stsp strncmp(s - lfs_len, lfs, lfs_len) == 0)
70 13b2bc37 2022-10-23 stsp seg = nextseg;
75 13b2bc37 2022-10-23 stsp if (seg <= s - lfs_len &&
76 13b2bc37 2022-10-23 stsp strncmp(s - lfs_len, lfs, lfs_len) == 0)