2 * This file is part of DisOrder
3 * Copyright (C) 2005 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
32 #include "authorize.h"
34 #include "configuration.h"
38 int authorize(const char *user
) {
40 const struct passwd
*pw
, *jbpw
;
46 if(!(jbpw
= getpwnam(config
->user
)))
47 fatal(0, "cannot find user %s", config
->user
);
49 if(!(pw
= getpwnam(user
)))
50 fatal(0, "no such user as %s", user
);
51 if((c
= config_userconf(0, pw
)) && access(c
, F_OK
) == 0) {
52 error(0, "%s already exists", c
);
55 if((c
= config_usersysconf(pw
)) && access(c
, F_OK
) == 0) {
56 error(0, "%s already exists", c
);
59 byte_xasprintf(&t
, "%s.new", c
);
60 gcry_randomize(pwbin
, sizeof pwbin
, GCRY_STRONG_RANDOM
);
61 pwhex
= hex(pwbin
, sizeof pwbin
);
63 /* create config.USER, to end up with mode 440 user:jukebox */
64 if((fd
= open(t
, O_WRONLY
|O_CREAT
|O_EXCL
, 0600)) < 0)
65 fatal(errno
, "error creating %s", t
);
66 if(fchown(fd
, pw
->pw_uid
, -1) < 0)
67 fatal(errno
, "error chowning %s", t
);
68 if(fchmod(fd
, 0400) < 0)
69 fatal(errno
, "error chmoding %s", t
);
70 if(!(fp
= fdopen(fd
, "w")))
71 fatal(errno
, "error calling fdopen");
72 if(fprintf(fp
, "password %s\n", pwhex
) < 0
74 fatal(errno
, "error writing to %s", t
);
76 fatal(errno
, "error renaming %s to %s", t
, c
);
78 /* append to config.private. We might create it along the way (though this
79 * is unlikely) in which case it had better be 640 root:jukebox */
80 if(!(c
= config_private()))
81 fatal(0, "cannot determine private config file");
82 if((fd
= open(c
, O_WRONLY
|O_APPEND
|O_CREAT
, 0600)) < 0)
83 fatal(errno
, "error opening %s", c
);
84 if(fchown(fd
, 0, jbgid
) < 0)
85 fatal(errno
, "error chowning %s", c
);
86 if(fchmod(fd
, 0640) < 0)
87 fatal(errno
, "error chmoding %s", t
);
88 if(!(fp
= fdopen(fd
, "a")))
89 fatal(errno
, "error calling fdopen");
90 if(fprintf(fp
, "allow %s %s\n", user
, pwhex
) < 0
92 fatal(errno
, "error appending to %s", c
);