/src/sudo/lib/util/gidlist.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * SPDX-License-Identifier: ISC |
3 | | * |
4 | | * Copyright (c) 2013-2015 Todd C. Miller <Todd.Miller@sudo.ws> |
5 | | * |
6 | | * Permission to use, copy, modify, and distribute this software for any |
7 | | * purpose with or without fee is hereby granted, provided that the above |
8 | | * copyright notice and this permission notice appear in all copies. |
9 | | * |
10 | | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
11 | | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
12 | | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
13 | | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
14 | | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
15 | | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
16 | | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
17 | | */ |
18 | | |
19 | | /* |
20 | | * This is an open source non-commercial project. Dear PVS-Studio, please check it. |
21 | | * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com |
22 | | */ |
23 | | |
24 | | #include <config.h> |
25 | | |
26 | | #include <stdlib.h> |
27 | | #include <grp.h> |
28 | | |
29 | | #include "sudo_compat.h" |
30 | | #include "sudo_debug.h" |
31 | | #include "sudo_fatal.h" |
32 | | #include "sudo_gettext.h" |
33 | | #include "sudo_util.h" |
34 | | |
35 | | /* |
36 | | * Parse a comma-separated list of gids into an allocated array of GETGROUPS_T. |
37 | | * If a pointer to the base gid is specified, it is stored as the first element |
38 | | * in the array. |
39 | | * Returns the number of gids in the allocated array. |
40 | | */ |
41 | | int |
42 | | sudo_parse_gids_v1(const char *gidstr, const gid_t *basegid, GETGROUPS_T **gidsp) |
43 | 351 | { |
44 | 351 | int ngids = 0; |
45 | 351 | GETGROUPS_T *gids; |
46 | 351 | const char *cp = gidstr; |
47 | 351 | const char *errstr; |
48 | 351 | char *ep; |
49 | 351 | debug_decl(sudo_parse_gids, SUDO_DEBUG_UTIL); |
50 | | |
51 | | /* Count groups. */ |
52 | 351 | if (*cp != '\0') { |
53 | 351 | ngids++; |
54 | 835k | do { |
55 | 835k | if (*cp++ == ',') |
56 | 278k | ngids++; |
57 | 835k | } while (*cp != '\0'); |
58 | 351 | } |
59 | | /* Base gid is optional. */ |
60 | 351 | if (basegid != NULL) |
61 | 351 | ngids++; |
62 | | /* Allocate and fill in array. */ |
63 | 351 | if (ngids != 0) { |
64 | 351 | gids = reallocarray(NULL, ngids, sizeof(GETGROUPS_T)); |
65 | 351 | if (gids == NULL) { |
66 | 0 | sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory")); |
67 | 0 | debug_return_int(-1); |
68 | 0 | } |
69 | 351 | ngids = 0; |
70 | 351 | if (basegid != NULL) |
71 | 351 | gids[ngids++] = *basegid; |
72 | 351 | cp = gidstr; |
73 | 245k | do { |
74 | 245k | gids[ngids] = (GETGROUPS_T) sudo_strtoidx(cp, ",", &ep, &errstr); |
75 | 245k | if (errstr != NULL) { |
76 | 23 | sudo_warnx(U_("%s: %s"), cp, U_(errstr)); |
77 | 23 | free(gids); |
78 | 23 | debug_return_int(-1); |
79 | 23 | } |
80 | 245k | if (basegid == NULL || gids[ngids] != *basegid) |
81 | 245k | ngids++; |
82 | 245k | cp = ep + 1; |
83 | 245k | } while (*ep != '\0'); |
84 | 328 | *gidsp = gids; |
85 | 328 | } |
86 | 328 | debug_return_int(ngids); |
87 | 328 | } |