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1 | /* |
2 | * This file is part of DisOrder. | |
3 | * Copyright (C) 2007 Richard Kettlewell | |
4 | * | |
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. | |
9 | * | |
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. | |
14 | * | |
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 | |
18 | * USA | |
19 | */ | |
20 | /** @file server/setup.c | |
21 | * @brief Automated setup functions | |
22 | */ | |
23 | ||
24 | #include <config.h> | |
25 | #include "types.h" | |
26 | ||
27 | #include <unistd.h> | |
28 | #include <fcntl.h> | |
29 | #include <gcrypt.h> | |
30 | #include <pwd.h> | |
31 | #include <sys/types.h> | |
32 | #include <sys/stat.h> | |
33 | #include <errno.h> | |
34 | #include <stdio.h> | |
35 | ||
36 | #include "log.h" | |
37 | #include "mem.h" | |
38 | #include "printf.h" | |
39 | #include "configuration.h" | |
40 | #include "setup.h" | |
41 | #include "hex.h" | |
42 | #include "defs.h" | |
43 | ||
44 | /** @brief Create config.private with a login for root */ | |
45 | void make_root_login(void) { | |
46 | struct stat sb; | |
47 | char *privconfig, *privconfignew; | |
48 | int fd; | |
49 | FILE *fp; | |
50 | struct passwd *pw; | |
51 | uint8_t pwbin[10]; | |
52 | char *pwhex; | |
53 | ||
54 | if(config->user) { | |
55 | if(!(pw = getpwnam(config->user))) | |
56 | fatal(0, "cannot find user %s", config->user); | |
57 | } else | |
58 | pw = 0; | |
59 | /* Compute filenames */ | |
60 | byte_xasprintf(&privconfig, "%s/config.private", pkgconfdir); | |
61 | byte_xasprintf(&privconfignew, "%s/config.private.new", pkgconfdir); | |
62 | /* If config.private already exists don't overwrite it */ | |
63 | if(stat(privconfig, &sb) == 0) | |
64 | return; | |
65 | /* Choose a new root password */ | |
66 | gcry_randomize(pwbin, sizeof pwbin, GCRY_STRONG_RANDOM); | |
67 | pwhex = hex(pwbin, sizeof pwbin); | |
68 | /* Create the file */ | |
b9ea01d8 RK |
69 | if((fd = open(privconfignew, O_WRONLY|O_CREAT, 0600)) < 0) { |
70 | error(errno, "error creating %s", privconfignew); | |
71 | return; /* not fatal! */ | |
72 | } | |
36be7e6a RK |
73 | /* Fix permissions */ |
74 | if(pw) { | |
75 | if(fchown(fd, 0, pw->pw_gid) < 0) | |
76 | fatal(errno, "error setting owner/group for %s", privconfignew); | |
77 | if(fchmod(fd, 0640) < 0) | |
78 | fatal(errno, "error setting permissions for %s", privconfignew); | |
79 | } | |
80 | /* Write the required 'allow' line */ | |
81 | if(!(fp = fdopen(fd, "w"))) | |
82 | fatal(errno, "fdopen"); | |
83 | if(fprintf(fp, "allow root %s\n", pwhex) < 0 | |
84 | || fclose(fp) < 0) | |
85 | fatal(errno, "error writing %s", privconfignew); | |
86 | /* Rename into place */ | |
87 | if(rename(privconfignew, privconfig) < 0) | |
88 | fatal(errno, "error renaming %s", privconfignew); | |
89 | } | |
90 | ||
91 | /* | |
92 | Local Variables: | |
93 | c-basic-offset:2 | |
94 | comment-column:40 | |
95 | fill-column:79 | |
96 | indent-tabs-mode:nil | |
97 | End: | |
98 | */ |