2 3efd8e31 2022-10-23 thomas * Copyright (c) 2018, 2019 Stefan Sperling <stsp@openbsd.org>
4 3efd8e31 2022-10-23 thomas * Permission to use, copy, modify, and distribute this software for any
5 3efd8e31 2022-10-23 thomas * purpose with or without fee is hereby granted, provided that the above
6 3efd8e31 2022-10-23 thomas * copyright notice and this permission notice appear in all copies.
8 3efd8e31 2022-10-23 thomas * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 3efd8e31 2022-10-23 thomas * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 3efd8e31 2022-10-23 thomas * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 3efd8e31 2022-10-23 thomas * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 3efd8e31 2022-10-23 thomas * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 3efd8e31 2022-10-23 thomas * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 3efd8e31 2022-10-23 thomas * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 3efd8e31 2022-10-23 thomas #include <sys/types.h>
18 3efd8e31 2022-10-23 thomas #include <sys/queue.h>
20 3efd8e31 2022-10-23 thomas #include <ctype.h>
21 3efd8e31 2022-10-23 thomas #include <string.h>
23 3efd8e31 2022-10-23 thomas #include "got_reference.h"
25 3efd8e31 2022-10-23 thomas #include "got_lib_lockfile.h"
27 3efd8e31 2022-10-23 thomas #ifndef nitems
28 3efd8e31 2022-10-23 thomas #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
32 3efd8e31 2022-10-23 thomas got_ref_name_is_valid(const char *name)
34 3efd8e31 2022-10-23 thomas const char *s, *seg;
35 3efd8e31 2022-10-23 thomas const char forbidden[] = { ' ', '~', '^', ':', '?', '*', '[' , '\\' };
36 3efd8e31 2022-10-23 thomas const char *forbidden_seq[] = { "//", "..", "@{" };
37 3efd8e31 2022-10-23 thomas const char *lfs = GOT_LOCKFILE_SUFFIX;
38 3efd8e31 2022-10-23 thomas const size_t lfs_len = sizeof(GOT_LOCKFILE_SUFFIX) - 1;
41 3efd8e31 2022-10-23 thomas if (name[0] == '@' && name[1] == '\0')
46 3efd8e31 2022-10-23 thomas if (seg[0] == '\0' || seg[0] == '.' || seg[0] == '/')
48 3efd8e31 2022-10-23 thomas while (*s) {
49 3efd8e31 2022-10-23 thomas for (i = 0; i < nitems(forbidden); i++) {
50 3efd8e31 2022-10-23 thomas if (*s == forbidden[i])
53 3efd8e31 2022-10-23 thomas for (i = 0; i < nitems(forbidden_seq); i++) {
54 3efd8e31 2022-10-23 thomas if (s[0] == forbidden_seq[i][0] &&
55 3efd8e31 2022-10-23 thomas s[1] == forbidden_seq[i][1])
58 3efd8e31 2022-10-23 thomas if (iscntrl((unsigned char)s[0]))
60 3efd8e31 2022-10-23 thomas if (s[0] == '.' && s[1] == '\0')
62 3efd8e31 2022-10-23 thomas if (*s == '/') {
63 3efd8e31 2022-10-23 thomas const char *nextseg = s + 1;
64 3efd8e31 2022-10-23 thomas if (nextseg[0] == '\0' || nextseg[0] == '.' ||
65 3efd8e31 2022-10-23 thomas nextseg[0] == '/')
67 3efd8e31 2022-10-23 thomas if (seg <= s - lfs_len &&
68 3efd8e31 2022-10-23 thomas strncmp(s - lfs_len, lfs, lfs_len) == 0)
70 3efd8e31 2022-10-23 thomas seg = nextseg;
75 3efd8e31 2022-10-23 thomas if (seg <= s - lfs_len &&
76 3efd8e31 2022-10-23 thomas strncmp(s - lfs_len, lfs, lfs_len) == 0)