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caa14ca2 MW |
1 | /* -*-c-*- |
2 | * | |
3 | * Utilities not worth librarifying | |
4 | * | |
5 | * (c) 2008 Mark Wooding | |
6 | */ | |
7 | ||
8 | /*----- Licensing notice --------------------------------------------------* | |
9 | * | |
10 | * This file is part of chkpath. | |
11 | * | |
12 | * chkpath is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * chkpath is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with chkpath; if not, write to the Free Software Foundation, | |
24 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
25 | */ | |
26 | ||
27 | /*----- Header files ------------------------------------------------------*/ | |
28 | ||
29 | #include "config.h" | |
30 | ||
31 | #include <ctype.h> | |
57f5a28f | 32 | #include <stdlib.h> |
caa14ca2 MW |
33 | |
34 | #include <sys/types.h> | |
35 | ||
36 | #include <grp.h> | |
37 | ||
38 | #include <mLib/macros.h> | |
39 | #include <mLib/report.h> | |
40 | ||
41 | #include "checkpath.h" | |
42 | #include "utils.h" | |
43 | ||
44 | /*----- Main code ---------------------------------------------------------*/ | |
45 | ||
46 | /* --- @allowgroup@ --- * | |
47 | * | |
48 | * Arguments: @struct checkpath *cp@ = pointer to structure to mess with | |
49 | * @const char *gname@ = trust group @gname@ | |
50 | * | |
51 | * Returns: --- | |
52 | * | |
53 | * Use: Adds the gid corresponding to @gname@ (which may be a number) | |
54 | * to the list of things we trust. | |
55 | */ | |
56 | ||
57 | void allowgroup(struct checkpath *cp, const char *gname) | |
58 | { | |
59 | struct group *gr; | |
60 | const char *p; | |
61 | gid_t g; | |
62 | ||
63 | /* --- Check for numeric group spec --- */ | |
64 | ||
65 | for (p = gname; *p; p++) { | |
66 | if (!isdigit((unsigned char)*p)) | |
67 | goto lookup; | |
68 | } | |
69 | g = atoi(gname); | |
70 | goto insert; | |
71 | ||
72 | /* --- Look up a group by name --- */ | |
73 | ||
74 | lookup: | |
75 | if ((gr = getgrnam(gname)) == 0) | |
76 | die(1, "group %s not found", gname); | |
77 | g = gr->gr_gid; | |
78 | ||
79 | /* --- Insert the group into the table --- */ | |
80 | ||
81 | insert: | |
82 | if (cp->cp_gids >= N(cp->cp_gid)) | |
83 | die(1, "too many groups"); | |
84 | cp->cp_gid[cp->cp_gids++] = g; | |
85 | } | |
86 | ||
87 | /*----- That's all, folks -------------------------------------------------*/ |