src/tools/sysdb/main.c

   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  */
  27
  28 #if HAVE_CONFIG_H
  29 #       include "config.h"
  30 #endif /* HAVE_CONFIG_H */
  31
  32 #include "tools/sysdb/command.h"
  33 #include "tools/sysdb/input.h"
  34
  35 #include "client/sysdb.h"
  36 #include "client/sock.h"
  37 #include "utils/error.h"
  38 #include "utils/llist.h"
  39 #include "utils/strbuf.h"
  40 #include "utils/os.h"
  41
  42 #include <errno.h>
  43
  44 #if HAVE_LIBGEN_H
  45 #       include <libgen.h>
  46 #else /* HAVE_LIBGEN_H */
  47 #       define basename(path) (path)
  48 #endif /* ! HAVE_LIBGEN_H */
  49
  50 #include <sys/stat.h>
  51 #include <fcntl.h>
  52
  53 #include <stdio.h>
  54 #include <stdlib.h>
  55 #include <string.h>
  56
  57 #include <unistd.h>
  58
  59 #include <sys/types.h>
  60
  61 #include <pwd.h>
  62
  63 #if HAVE_EDITLINE_READLINE_H
  64 #       include <editline/readline.h>
  65 #       if HAVE_EDITLINE_HISTORY_H
  66 #               include <editline/history.h>
  67 #       endif
  68 #elif HAVE_READLINE_READLINE_H
  69 #       include <readline/readline.h>
  70 #       if HAVE_READLINE_HISTORY_H
  71 #               include <readline/history.h>
  72 #       endif
  73 #elif HAVE_READLINE_H
  74 #       include <readline.h>
  75 #       if HAVE_HISTORY_H
  76 #               include <history.h>
  77 #       endif
  78 #endif /* READLINEs */
  79
  80 #include <openssl/ssl.h>
  81 #include <openssl/err.h>
  82
  83 #ifndef DEFAULT_SOCKET
  84 #       define DEFAULT_SOCKET "unix:"LOCALSTATEDIR"/run/sysdbd.sock"
  85 #endif
  86
  87 static sdb_ssl_options_t ssl_options = {
  88         /* ca_file */   SDB_SSL_CAFILE,
  89         /* key_file */  "~/.config/sysdb/ssl/key.pem",
  90         /* cert_file */ "~/.config/sysdb/ssl/cert.pem",
  91         /* crl_file */  "~/.config/sysdb/ssl/crl.pem",
  92 };
  93
  94 static void
  95 canonicalize_ssl_options(void)
  96 {
  97         char *tmp;
  98         if (ssl_options.ca_file) {
  99                 tmp = sdb_realpath(ssl_options.ca_file);
 100                 ssl_options.ca_file = tmp ? tmp : strdup(ssl_options.ca_file);
 101         }
 102         if (ssl_options.key_file) {
 103                 tmp = sdb_realpath(ssl_options.key_file);
 104                 ssl_options.key_file = tmp ? tmp : strdup(ssl_options.key_file);
 105         }
 106         if (ssl_options.cert_file) {
 107                 tmp = sdb_realpath(ssl_options.cert_file);
 108                 ssl_options.cert_file = tmp ? tmp : strdup(ssl_options.cert_file);
 109         }
 110         if (ssl_options.crl_file) {
 111                 tmp = sdb_realpath(ssl_options.crl_file);
 112                 ssl_options.crl_file = tmp ? tmp : strdup(ssl_options.crl_file);
 113         }
 114 } /* canonicalize_ssl_options */
 115
 116 static void
 117 exit_usage(char *name, int status)
 118 {
 119         char *user = sdb_get_current_user();
 120         printf(
 121 "Usage: %s <options>\n"
 122
 123 "\nOptions:\n"
 124 "  -H HOST   the host to connect to\n"
 125 "            default: "DEFAULT_SOCKET"\n"
 126 "  -U USER   the username to connect as\n"
 127 "            default: %s\n"
 128 "  -c CMD    execute the specified command and then exit\n"
 129 "\n"
 130 "  -h        display this help and exit\n"
 131 "  -V        display the version number and copyright\n"
 132
 133 "\nSysDB client "SDB_CLIENT_VERSION_STRING SDB_CLIENT_VERSION_EXTRA", "
 134 PACKAGE_URL"\n", basename(name), user);
 135         free(user);
 136         exit(status);
 137 } /* exit_usage */
 138
 139 static void
 140 exit_version(void)
 141 {
 142         printf("SysDB version "SDB_CLIENT_VERSION_STRING
 143                         SDB_CLIENT_VERSION_EXTRA", built "BUILD_DATE"\n"
 144                         "using libsysdbclient version %s%s\n"
 145                         "Copyright (C) 2012-2014 "PACKAGE_MAINTAINER"\n"
 146
 147                         "\nThis is free software under the terms of the BSD license, see "
 148                         "the source for\ncopying conditions. There is NO WARRANTY; not "
 149                         "even for MERCHANTABILITY or\nFITNESS FOR A PARTICULAR "
 150                         "PURPOSE.\n", sdb_client_version_string(),
 151                         sdb_client_version_extra());
 152         exit(0);
 153 } /* exit_version */
 154
 155 static int
 156 execute_commands(sdb_client_t *client, sdb_llist_t *commands)
 157 {
 158         sdb_llist_iter_t *iter;
 159         int status = 0;
 160
 161         iter = sdb_llist_get_iter(commands);
 162         if (! iter) {
 163                 sdb_log(SDB_LOG_ERR, "Failed to iterate commands");
 164                 return 1;
 165         }
 166
 167         while (sdb_llist_iter_has_next(iter)) {
 168                 sdb_object_t *obj = sdb_llist_iter_get_next(iter);
 169
 170                 if (sdb_client_send(client, SDB_CONNECTION_QUERY,
 171                                         (uint32_t)strlen(obj->name), obj->name) <= 0) {
 172                         sdb_log(SDB_LOG_ERR, "Failed to send command '%s' to server",
 173                                         obj->name);
 174                         status = 1;
 175                         break;
 176                 }
 177
 178                 /* Wait for server replies. We might get any number of log messages
 179                  * but eventually see the reply to the query, which is either DATA or
 180                  * ERROR. */
 181                 while (42) {
 182                         status = sdb_command_print_reply(client);
 183                         if (status < 0) {
 184                                 sdb_log(SDB_LOG_ERR, "Failed to read reply from server");
 185                                 break;
 186                         }
 187
 188                         if ((status == SDB_CONNECTION_DATA)
 189                                         || (status == SDB_CONNECTION_ERROR))
 190                                 break;
 191                         if (status == SDB_CONNECTION_OK) {
 192                                 /* pre 0.4 versions used OK instead of DATA */
 193                                 sdb_log(SDB_LOG_WARNING, "Received unexpected OK status from "
 194                                                 "server in response to a QUERY (expected DATA); "
 195                                                 "assuming we're talking to an old server");
 196                                 break;
 197                         }
 198                 }
 199
 200                 if ((status != SDB_CONNECTION_OK) && (status != SDB_CONNECTION_DATA))
 201                         break; /* error */
 202         }
 203
 204         sdb_llist_iter_destroy(iter);
 205         return status;
 206 } /* execute_commands */
 207
 208 int
 209 main(int argc, char **argv)
 210 {
 211         const char *host = NULL;
 212
 213         char *homedir;
 214         char hist_file[1024] = "";
 215
 216         sdb_input_t input = SDB_INPUT_INIT;
 217         sdb_llist_t *commands = NULL;
 218
 219         while (42) {
 220                 int opt = getopt(argc, argv, "H:U:c:hV");
 221
 222                 if (-1 == opt)
 223                         break;
 224
 225                 switch (opt) {
 226                         case 'H':
 227                                 host = optarg;
 228                                 break;
 229                         case 'U':
 230                                 input.user = optarg;
 231                                 break;
 232
 233                         case 'c':
 234                                 {
 235                                         sdb_object_t *obj;
 236
 237                                         if (! commands)
 238                                                 commands = sdb_llist_create();
 239                                         if (! commands) {
 240                                                 sdb_log(SDB_LOG_ERR, "Failed to create list object");
 241                                                 exit(1);
 242                                         }
 243
 244                                         if (! (obj = sdb_object_create_T(optarg, sdb_object_t))) {
 245                                                 sdb_log(SDB_LOG_ERR, "Failed to create object");
 246                                                 exit(1);
 247                                         }
 248                                         if (sdb_llist_append(commands, obj)) {
 249                                                 sdb_log(SDB_LOG_ERR, "Failed to append command to list");
 250                                                 sdb_object_deref(obj);
 251                                                 exit(1);
 252                                         }
 253                                         sdb_object_deref(obj);
 254                                 }
 255                                 break;
 256
 257                         case 'h':
 258                                 exit_usage(argv[0], 0);
 259                                 break;
 260                         case 'V':
 261                                 exit_version();
 262                                 break;
 263                         default:
 264                                 exit_usage(argv[0], 1);
 265                 }
 266         }
 267
 268         if (optind < argc)
 269                 exit_usage(argv[0], 1);
 270
 271         if (! host)
 272                 host = DEFAULT_SOCKET;
 273         if (! input.user)
 274                 input.user = sdb_get_current_user();
 275         else
 276                 input.user = strdup(input.user);
 277         if (! input.user)
 278                 exit(1);
 279
 280         SSL_load_error_strings();
 281         OpenSSL_add_ssl_algorithms();
 282
 283         input.client = sdb_client_create(host);
 284         if (! input.client) {
 285                 sdb_log(SDB_LOG_ERR, "Failed to create client object");
 286                 sdb_input_reset(&input);
 287                 exit(1);
 288         }
 289         canonicalize_ssl_options();
 290         if (sdb_client_set_ssl_options(input.client, &ssl_options)) {
 291                 sdb_log(SDB_LOG_ERR, "Failed to apply SSL options");
 292                 sdb_input_reset(&input);
 293                 sdb_ssl_free_options(&ssl_options);
 294                 exit(1);
 295         }
 296         sdb_ssl_free_options(&ssl_options);
 297         if (sdb_client_connect(input.client, input.user)) {
 298                 sdb_log(SDB_LOG_ERR, "Failed to connect to SysDBd");
 299                 sdb_input_reset(&input);
 300                 exit(1);
 301         }
 302
 303         if (commands) {
 304                 int status = execute_commands(input.client, commands);
 305                 sdb_llist_destroy(commands);
 306                 sdb_input_reset(&input);
 307                 if ((status != SDB_CONNECTION_OK) && (status != SDB_CONNECTION_DATA))
 308                         exit(1);
 309                 exit(0);
 310         }
 311
 312         sdb_log(SDB_LOG_INFO, "SysDB client "SDB_CLIENT_VERSION_STRING
 313                         SDB_CLIENT_VERSION_EXTRA" (libsysdbclient %s%s)\n",
 314                         sdb_client_version_string(), sdb_client_version_extra());
 315
 316         using_history();
 317
 318         if ((homedir = sdb_get_homedir())) {
 319                 snprintf(hist_file, sizeof(hist_file) - 1,
 320                                 "%s/.sysdb_history", homedir);
 321                 hist_file[sizeof(hist_file) - 1] = '\0';
 322                 free(homedir);
 323                 homedir = NULL;
 324
 325                 errno = 0;
 326                 if (read_history(hist_file) && (errno != ENOENT)) {
 327                         char errbuf[1024];
 328                         sdb_log(SDB_LOG_WARNING, "Failed to load history (%s): %s",
 329                                         hist_file, sdb_strerror(errno, errbuf, sizeof(errbuf)));
 330                 }
 331         }
 332
 333         input.input = sdb_strbuf_create(2048);
 334         sdb_input_init(&input);
 335         sdb_input_mainloop();
 336
 337         sdb_client_shutdown(input.client, SHUT_WR);
 338         while (! sdb_client_eof(input.client)) {
 339                 /* wait for remaining data to arrive */
 340                 sdb_command_print_reply(input.client);
 341         }
 342
 343         if (hist_file[0] != '\0') {
 344                 errno = 0;
 345                 if (write_history(hist_file)) {
 346                         char errbuf[1024];
 347                         sdb_log(SDB_LOG_WARNING, "Failed to store history (%s): %s",
 348                                         hist_file, sdb_strerror(errno, errbuf, sizeof(errbuf)));
 349                 }
 350         }
 351
 352         sdb_input_reset(&input);
 353
 354         ERR_free_strings();
 355         return 0;
 356 } /* main */
 357
 358 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */
 359