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 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU 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, see <http://www.gnu.org/licenses/>.
19 * @brief Jukebox user management
24 #include <sys/types.h>
33 #include "configuration.h"
36 /** @brief Become the jukebox user
38 * If a jukebox user is configured then becomes that user.
40 void become_mortal(void) {
44 if(!(pw
= getpwnam(config
->user
)))
45 disorder_fatal(0, "cannot find user %s", config
->user
);
46 if(pw
->pw_uid
!= getuid()) {
47 if(initgroups(config
->user
, pw
->pw_gid
))
48 disorder_fatal(errno
, "error calling initgroups");
49 if(setgid(pw
->pw_gid
) < 0)
50 disorder_fatal(errno
, "error calling setgid");
51 if(setuid(pw
->pw_uid
) < 0)
52 disorder_fatal(errno
, "error calling setgid");
53 disorder_info("changed to user %s (uid %lu)",
54 config
->user
, (unsigned long)getuid());
57 if(getuid() != pw
->pw_uid
)
58 disorder_fatal(0, "wrong real uid");
59 if(geteuid() != pw
->pw_uid
)
60 disorder_fatal(0, "wrong effective uid");
61 if(getgid() != pw
->pw_gid
)
62 disorder_fatal(0, "wrong real gid");
63 if(getegid() != pw
->pw_gid
)
64 disorder_fatal(0, "wrong effective gid");
66 disorder_fatal(0, "setuid(0) unexpectedly succeeded");
68 disorder_fatal(0, "seteuid(0) unexpectedly succeeded");
72 /** @brief Create the jukebox state directory
74 * If the home directory does not exist then creates it and assigns
75 * it suitable permissions.
77 void make_home(void) {
82 if(stat(config
->home
, &sb
) < 0) {
83 /* create parent directories */
84 home
= xstrdup(config
->home
);
87 if(*p
== '/' && p
> home
) {
94 /* create the directory itself */
95 if(mkdir(config
->home
, 02755) < 0)
96 disorder_fatal(errno
, "error creating %s", config
->home
);
97 /* make sure it has the right ownership */
99 if(!(pw
= getpwnam(config
->user
)))
100 disorder_fatal(0, "cannot find user %s", config
->user
);
101 if(chown(config
->home
, pw
->pw_uid
, pw
->pw_gid
) < 0)
102 disorder_fatal(errno
, "error chowning %s", config
->home
);