2 * This file is part of DisOrder
3 * Copyright (C) 2005, 2007 Richard Kettlewell
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
21 * @brief Jukebox user management
27 #include <sys/types.h>
36 #include "configuration.h"
39 /** @brief Become the jukebox user
41 * If a jukebox user is configured then becomes that user.
43 void become_mortal(void) {
47 if(!(pw = getpwnam(config->user)))
48 fatal(0, "cannot find user %s", config->user);
49 if(pw->pw_uid != getuid()) {
50 if(initgroups(config->user, pw->pw_gid))
51 fatal(errno, "error calling initgroups");
52 if(setgid(pw->pw_gid) < 0) fatal(errno, "error calling setgid");
53 if(setuid(pw->pw_uid) < 0) fatal(errno, "error calling setgid");
54 info("changed to user %s (uid %lu)", config->user, (unsigned long)getuid());
57 if(getuid() != pw->pw_uid) fatal(0, "wrong real uid");
58 if(geteuid() != pw->pw_uid) fatal(0, "wrong effective uid");
59 if(getgid() != pw->pw_gid) fatal(0, "wrong real gid");
60 if(getegid() != pw->pw_gid) fatal(0, "wrong effective gid");
61 if(setuid(0) != -1) fatal(0, "setuid(0) unexpectedly succeeded");
62 if(seteuid(0) != -1) fatal(0, "seteuid(0) unexpectedly succeeded");
66 /** @brief Create the jukebox state directory
68 * If the home directory does not exist then creates it and assigns
69 * it suitable permissions.
71 void make_home(void) {
76 if(stat(config->home, &sb) < 0) {
77 /* create parent directories */
78 home = xstrdup(config->home);
81 if(*p == '/' && p > home) {
88 /* create the directory itself */
89 if(mkdir(config->home, 02755) < 0)
90 fatal(errno, "error creating %s", config->home);
91 /* make sure it has the right ownership */
93 if(!(pw = getpwnam(config->user)))
94 fatal(0, "cannot find user %s", config->user);
95 if(chown(config->home, pw->pw_uid, pw->pw_gid) < 0)
96 fatal(errno, "error chowning %s", config->home);