Mercurial > projects > xwrited

annotate xwrited-utmp-utmpx.c @ 16:f088694c1c32

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fix wrong command name in the manpage synopsis
author Thomas Koch <thomas@koch.ro>
date Tue, 11 Aug 2015 19:21:38 +0200
parents 52694b49dcc4
children 4a5330979433
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
1 /*
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
2 * Copyright (C) 2010 Guido Berhoerster <guido+xwrited@berhoerster.name>
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
3 *
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
4 * Permission is hereby granted, free of charge, to any person obtaining
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
5 * a copy of this software and associated documentation files (the
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
6 * "Software"), to deal in the Software without restriction, including
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
7 * without limitation the rights to use, copy, modify, merge, publish,
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
8 * distribute, sublicense, and/or sell copies of the Software, and to
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
9 * permit persons to whom the Software is furnished to do so, subject to
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
10 * the following conditions:
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
11 *
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
12 * The above copyright notice and this permission notice shall be included
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
13 * in all copies or substantial portions of the Software.
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
14 *
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
19 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
20 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
21 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
22 */
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
23
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
24 #define _XOPEN_SOURCE 600
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
25
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
26 #include <glib.h>
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
27 #include <stdlib.h>
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
28 #include <string.h>
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
29 #include <unistd.h>
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
30 #include <pwd.h>
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
31 #include <utmpx.h>
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
32 #include <errno.h>
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
33 #include <sys/time.h>
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
34
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
35 #define DEV_PREFIX "/dev/"
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
36
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
37 static void
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
38 utmp_write_entry(int fd, gboolean add)
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
39 {
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
40 struct utmpx utmpx;
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
41 char *line = NULL;
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
42 size_t line_len;
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
43 char *id;
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
44 struct passwd *pwd;
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
45
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
46 line = ptsname(fd);
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
47 if (line == NULL) {
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
48 g_critical("failed to obtain slave pty name");
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
49 return;
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
50 }
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
51 if (g_str_has_prefix(line, DEV_PREFIX)) {
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
52 line += strlen(DEV_PREFIX);
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
53 }
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
54
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
55 line_len = strlen(line);
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
56 id = (line_len >= sizeof (utmpx.ut_pid)) ?
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
57 line + (line_len - sizeof (utmpx.ut_pid)) :
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
58 line;
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
59
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
60 pwd = getpwuid(getuid());
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
61 if (pwd == NULL) {
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
62 g_critical("failed to get username: %s", g_strerror(errno));
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
63 return;
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
64 }
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
65
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
66 memset(&utmpx, 0, sizeof (utmpx));
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
67 strncpy(utmpx.ut_name, pwd->pw_name, sizeof (utmpx.ut_name));
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
68 strncpy(utmpx.ut_id, id, sizeof (utmpx.ut_id));
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
69 strncpy(utmpx.ut_line, line, sizeof (utmpx.ut_line));
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
70 utmpx.ut_pid = getpid();
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
71 utmpx.ut_type = add ? USER_PROCESS : DEAD_PROCESS;
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
72 gettimeofday(&utmpx.ut_tv, NULL);
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
73
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
74 setutxent();
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
75 if (pututxline(&utmpx) == NULL) {
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
76 g_critical("failed to write to utmpx database: %s",
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
77 g_strerror(errno));
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
78 return;
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
79 }
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
80 endutxent();
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
81 }
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
82
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
83 void
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
84 xwrited_utmp_add_entry(int fd)
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
85 {
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
86 utmp_write_entry(fd, TRUE);
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
87 }
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
88
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
89 void
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
90 xwrited_utmp_remove_entry(int fd)
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
91 {
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
92 utmp_write_entry(fd, FALSE);
52694b49dcc4 Initial revision
Guido Berhoerster <guido+xwrited@berhoerster.name>
parents:
diff changeset
93 }