1 /*
2 * SysDB - src/tools/sysdb/main.c
3 * Copyright (C) 2013 Sebastian 'tokkee' Harl <sh@tokkee.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
28 #if HAVE_CONFIG_H
29 # include "config.h"
30 #endif /* HAVE_CONFIG_H */
32 #include "tools/sysdb/input.h"
34 #include "client/sysdb.h"
35 #include "client/sock.h"
36 #include "utils/error.h"
37 #include "utils/strbuf.h"
39 #include <errno.h>
41 #if HAVE_LIBGEN_H
42 # include <libgen.h>
43 #else /* HAVE_LIBGEN_H */
44 # define basename(path) (path)
45 #endif /* ! HAVE_LIBGEN_H */
47 #include <sys/stat.h>
48 #include <fcntl.h>
50 #include <stdio.h>
51 #include <stdlib.h>
52 #include <string.h>
54 #include <unistd.h>
56 #include <sys/types.h>
58 #include <pwd.h>
60 #if HAVE_EDITLINE_READLINE_H
61 # include <editline/readline.h>
62 # if HAVE_EDITLINE_HISTORY_H
63 # include <editline/history.h>
64 # endif
65 #elif HAVE_READLINE_READLINE_H
66 # include <readline/readline.h>
67 # if HAVE_READLINE_HISTORY_H
68 # include <readline/history.h>
69 # endif
70 #elif HAVE_READLINE_H
71 # include <readline.h>
72 # if HAVE_HISTORY_H
73 # include <history.h>
74 # endif
75 #endif /* READLINEs */
77 #ifndef DEFAULT_SOCKET
78 # define DEFAULT_SOCKET "unix:"LOCALSTATEDIR"/run/sysdbd.sock"
79 #endif
81 static void
82 exit_usage(char *name, int status)
83 {
84 printf(
85 "Usage: %s <options>\n"
87 "\nOptions:\n"
88 " -h display this help and exit\n"
89 " -V display the version number and copyright\n"
91 "\nSysDB client "SDB_CLIENT_VERSION_STRING SDB_CLIENT_VERSION_EXTRA", "
92 PACKAGE_URL"\n", basename(name));
93 exit(status);
94 } /* exit_usage */
96 static void
97 exit_version(void)
98 {
99 printf("SysDB version "SDB_CLIENT_VERSION_STRING
100 SDB_CLIENT_VERSION_EXTRA", built "BUILD_DATE"\n"
101 "using libsysdbclient version %s%s\n"
102 "Copyright (C) 2012-2014 "PACKAGE_MAINTAINER"\n"
104 "\nThis is free software under the terms of the BSD license, see "
105 "the source for\ncopying conditions. There is NO WARRANTY; not "
106 "even for MERCHANTABILITY or\nFITNESS FOR A PARTICULAR "
107 "PURPOSE.\n", sdb_client_version_string(),
108 sdb_client_version_extra());
109 exit(0);
110 } /* exit_version */
112 static const char *
113 get_current_user(void)
114 {
115 struct passwd pw_entry;
116 struct passwd *result = NULL;
118 uid_t uid;
120 /* needs to be static because we return a pointer into this buffer
121 * to the caller */
122 static char buf[1024];
124 int status;
126 uid = geteuid();
128 memset(&pw_entry, 0, sizeof(pw_entry));
129 status = getpwuid_r(uid, &pw_entry, buf, sizeof(buf), &result);
131 if (status || (! result)) {
132 char errbuf[1024];
133 sdb_log(SDB_LOG_ERR, "Failed to determine current username: %s",
134 sdb_strerror(errno, errbuf, sizeof(errbuf)));
135 return NULL;
136 }
137 return result->pw_name;
138 } /* get_current_user */
140 static const char *
141 get_homedir(const char *username)
142 {
143 struct passwd pw_entry;
144 struct passwd *result = NULL;
146 /* needs to be static because we return a pointer into this buffer
147 * to the caller */
148 static char buf[1024];
150 int status;
152 memset(&pw_entry, 0, sizeof(pw_entry));
153 status = getpwnam_r(username, &pw_entry, buf, sizeof(buf), &result);
155 if (status || (! result)) {
156 char errbuf[1024];
157 sdb_log(SDB_LOG_WARNING, "Failed to determine home directory "
158 "for user %s: %s", username,
159 sdb_strerror(errno, errbuf, sizeof(errbuf)));
160 return NULL;
161 }
162 return result->pw_dir;
163 } /* get_homedir */
165 int
166 main(int argc, char **argv)
167 {
168 const char *host = NULL;
169 const char *user = NULL;
171 const char *homedir;
172 char hist_file[1024] = "";
174 sdb_input_t input = SDB_INPUT_INIT;
176 while (42) {
177 int opt = getopt(argc, argv, "H:U:hV");
179 if (-1 == opt)
180 break;
182 switch (opt) {
183 case 'H':
184 host = optarg;
185 break;
186 case 'U':
187 user = optarg;
188 break;
190 case 'h':
191 exit_usage(argv[0], 0);
192 break;
193 case 'V':
194 exit_version();
195 break;
196 default:
197 exit_usage(argv[0], 1);
198 }
199 }
201 if (optind < argc)
202 exit_usage(argv[0], 1);
204 if (! host)
205 host = DEFAULT_SOCKET;
206 if (! user) {
207 user = get_current_user();
208 if (! user)
209 exit(1);
210 }
212 input.client = sdb_client_create(host);
213 if (! input.client) {
214 sdb_log(SDB_LOG_ERR, "Failed to create client object");
215 exit(1);
216 }
217 if (sdb_client_connect(input.client, user)) {
218 sdb_log(SDB_LOG_ERR, "Failed to connect to SysDBd");
219 sdb_client_destroy(input.client);
220 exit(1);
221 }
223 sdb_log(SDB_LOG_INFO, "SysDB client "SDB_CLIENT_VERSION_STRING
224 SDB_CLIENT_VERSION_EXTRA"\n");
226 using_history();
228 if ((homedir = get_homedir(user))) {
229 snprintf(hist_file, sizeof(hist_file) - 1,
230 "%s/.sysdb_history", homedir);
231 hist_file[sizeof(hist_file) - 1] = '\0';
233 errno = 0;
234 if (read_history(hist_file) && (errno != ENOENT)) {
235 char errbuf[1024];
236 sdb_log(SDB_LOG_WARNING, "Failed to load history (%s): %s",
237 hist_file, sdb_strerror(errno, errbuf, sizeof(errbuf)));
238 }
239 }
241 input.input = sdb_strbuf_create(2048);
242 sdb_input_init(&input);
243 sdb_input_mainloop();
245 if (hist_file[0] != '\0') {
246 errno = 0;
247 if (write_history(hist_file)) {
248 char errbuf[1024];
249 sdb_log(SDB_LOG_WARNING, "Failed to store history (%s): %s",
250 hist_file, sdb_strerror(errno, errbuf, sizeof(errbuf)));
251 }
252 }
254 sdb_client_destroy(input.client);
255 sdb_strbuf_destroy(input.input);
256 return 0;
257 } /* main */
259 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */