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 "Connection options:\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 "SSL options:\n"
 131 "  -K KEYFILE   private key file name\n"
 132 "               default: %s\n"
 133 "  -C CERTFILE  client certificate file name\n"
 134 "               default: %s\n"
 135 "  -A CAFILE    CA certificates file name\n"
 136 "               default: %s\n"
 137 "\n"
 138 "General options:\n"
 139 "\n"
 140 "  -h           display this help and exit\n"
 141 "  -V           display the version number and copyright\n"
 142
 143 "\nSysDB client "SDB_CLIENT_VERSION_STRING SDB_CLIENT_VERSION_EXTRA", "
 144 PACKAGE_URL"\n", basename(name), user,
 145                         ssl_options.key_file, ssl_options.cert_file, ssl_options.ca_file);
 146
 147         free(user);
 148         exit(status);
 149 } /* exit_usage */
 150
 151 static void
 152 exit_version(void)
 153 {
 154         printf("SysDB version "SDB_CLIENT_VERSION_STRING
 155                         SDB_CLIENT_VERSION_EXTRA", built "BUILD_DATE"\n"
 156                         "using libsysdbclient version %s%s\n"
 157                         "Copyright (C) 2012-2014 "PACKAGE_MAINTAINER"\n"
 158
 159                         "\nThis is free software under the terms of the BSD license, see "
 160                         "the source for\ncopying conditions. There is NO WARRANTY; not "
 161                         "even for MERCHANTABILITY or\nFITNESS FOR A PARTICULAR "
 162                         "PURPOSE.\n", sdb_client_version_string(),
 163                         sdb_client_version_extra());
 164         exit(0);
 165 } /* exit_version */
 166
 167 static int
 168 execute_commands(sdb_client_t *client, sdb_llist_t *commands)
 169 {
 170         sdb_llist_iter_t *iter;
 171         int status = 0;
 172
 173         iter = sdb_llist_get_iter(commands);
 174         if (! iter) {
 175                 sdb_log(SDB_LOG_ERR, "Failed to iterate commands");
 176                 return 1;
 177         }
 178
 179         while (sdb_llist_iter_has_next(iter)) {
 180                 sdb_object_t *obj = sdb_llist_iter_get_next(iter);
 181
 182                 if (sdb_client_send(client, SDB_CONNECTION_QUERY,
 183                                         (uint32_t)strlen(obj->name), obj->name) <= 0) {
 184                         sdb_log(SDB_LOG_ERR, "Failed to send command '%s' to server",
 185                                         obj->name);
 186                         status = 1;
 187                         break;
 188                 }
 189
 190                 /* Wait for server replies. We might get any number of log messages
 191                  * but eventually see the reply to the query, which is either DATA or
 192                  * ERROR. */
 193                 while (42) {
 194                         status = sdb_command_print_reply(client);
 195                         if (status < 0) {
 196                                 sdb_log(SDB_LOG_ERR, "Failed to read reply from server");
 197                                 break;
 198                         }
 199
 200                         if ((status == SDB_CONNECTION_DATA)
 201                                         || (status == SDB_CONNECTION_ERROR))
 202                                 break;
 203                         if (status == SDB_CONNECTION_OK) {
 204                                 /* pre 0.4 versions used OK instead of DATA */
 205                                 sdb_log(SDB_LOG_WARNING, "Received unexpected OK status from "
 206                                                 "server in response to a QUERY (expected DATA); "
 207                                                 "assuming we're talking to an old server");
 208                                 break;
 209                         }
 210                 }
 211
 212                 if ((status != SDB_CONNECTION_OK) && (status != SDB_CONNECTION_DATA))
 213                         break; /* error */
 214         }
 215
 216         sdb_llist_iter_destroy(iter);
 217         return status;
 218 } /* execute_commands */
 219
 220 int
 221 main(int argc, char **argv)
 222 {
 223         const char *host = NULL;
 224
 225         char *homedir;
 226         char hist_file[1024] = "";
 227
 228         sdb_input_t input = SDB_INPUT_INIT;
 229         sdb_llist_t *commands = NULL;
 230
 231         while (42) {
 232                 int opt = getopt(argc, argv, "H:U:c:C:K:A:hV");
 233
 234                 if (-1 == opt)
 235                         break;
 236
 237                 switch (opt) {
 238                         case 'H':
 239                                 host = optarg;
 240                                 break;
 241                         case 'U':
 242                                 input.user = optarg;
 243                                 break;
 244
 245                         case 'c':
 246                                 {
 247                                         sdb_object_t *obj;
 248
 249                                         if (! commands)
 250                                                 commands = sdb_llist_create();
 251                                         if (! commands) {
 252                                                 sdb_log(SDB_LOG_ERR, "Failed to create list object");
 253                                                 exit(1);
 254                                         }
 255
 256                                         if (! (obj = sdb_object_create_T(optarg, sdb_object_t))) {
 257                                                 sdb_log(SDB_LOG_ERR, "Failed to create object");
 258                                                 exit(1);
 259                                         }
 260                                         if (sdb_llist_append(commands, obj)) {
 261                                                 sdb_log(SDB_LOG_ERR, "Failed to append command to list");
 262                                                 sdb_object_deref(obj);
 263                                                 exit(1);
 264                                         }
 265                                         sdb_object_deref(obj);
 266                                 }
 267                                 break;
 268
 269                         case 'C':
 270                                 ssl_options.cert_file = optarg;
 271                                 break;
 272                         case 'K':
 273                                 ssl_options.key_file = optarg;
 274                                 break;
 275                         case 'A':
 276                                 ssl_options.ca_file = optarg;
 277                                 break;
 278
 279                         case 'h':
 280                                 exit_usage(argv[0], 0);
 281                                 break;
 282                         case 'V':
 283                                 exit_version();
 284                                 break;
 285                         default:
 286                                 exit_usage(argv[0], 1);
 287                 }
 288         }
 289
 290         if (optind < argc)
 291                 exit_usage(argv[0], 1);
 292
 293         if (! host)
 294                 host = DEFAULT_SOCKET;
 295         if (! input.user)
 296                 input.user = sdb_get_current_user();
 297         else
 298                 input.user = strdup(input.user);
 299         if (! input.user)
 300                 exit(1);
 301
 302         SSL_load_error_strings();
 303         OpenSSL_add_ssl_algorithms();
 304
 305         input.client = sdb_client_create(host);
 306         if (! input.client) {
 307                 sdb_log(SDB_LOG_ERR, "Failed to create client object");
 308                 sdb_input_reset(&input);
 309                 exit(1);
 310         }
 311         canonicalize_ssl_options();
 312         if (sdb_client_set_ssl_options(input.client, &ssl_options)) {
 313                 sdb_log(SDB_LOG_ERR, "Failed to apply SSL options");
 314                 sdb_input_reset(&input);
 315                 sdb_ssl_free_options(&ssl_options);
 316                 exit(1);
 317         }
 318         sdb_ssl_free_options(&ssl_options);
 319         if (sdb_client_connect(input.client, input.user)) {
 320                 sdb_log(SDB_LOG_ERR, "Failed to connect to SysDBd");
 321                 sdb_input_reset(&input);
 322                 exit(1);
 323         }
 324
 325         if (commands) {
 326                 int status = execute_commands(input.client, commands);
 327                 sdb_llist_destroy(commands);
 328                 sdb_input_reset(&input);
 329                 if ((status != SDB_CONNECTION_OK) && (status != SDB_CONNECTION_DATA))
 330                         exit(1);
 331                 exit(0);
 332         }
 333
 334         sdb_log(SDB_LOG_INFO, "SysDB client "SDB_CLIENT_VERSION_STRING
 335                         SDB_CLIENT_VERSION_EXTRA" (libsysdbclient %s%s)\n",
 336                         sdb_client_version_string(), sdb_client_version_extra());
 337
 338         using_history();
 339
 340         if ((homedir = sdb_get_homedir())) {
 341                 snprintf(hist_file, sizeof(hist_file) - 1,
 342                                 "%s/.sysdb_history", homedir);
 343                 hist_file[sizeof(hist_file) - 1] = '\0';
 344                 free(homedir);
 345                 homedir = NULL;
 346
 347                 errno = 0;
 348                 if (read_history(hist_file) && (errno != ENOENT)) {
 349                         char errbuf[1024];
 350                         sdb_log(SDB_LOG_WARNING, "Failed to load history (%s): %s",
 351                                         hist_file, sdb_strerror(errno, errbuf, sizeof(errbuf)));
 352                 }
 353         }
 354
 355         input.input = sdb_strbuf_create(2048);
 356         sdb_input_init(&input);
 357         sdb_input_mainloop();
 358
 359         sdb_client_shutdown(input.client, SHUT_WR);
 360         while (! sdb_client_eof(input.client)) {
 361                 /* wait for remaining data to arrive */
 362                 sdb_command_print_reply(input.client);
 363         }
 364
 365         if (hist_file[0] != '\0') {
 366                 errno = 0;
 367                 if (write_history(hist_file)) {
 368                         char errbuf[1024];
 369                         sdb_log(SDB_LOG_WARNING, "Failed to store history (%s): %s",
 370                                         hist_file, sdb_strerror(errno, errbuf, sizeof(errbuf)));
 371                 }
 372         }
 373
 374         sdb_input_reset(&input);
 375
 376         ERR_free_strings();
 377         return 0;
 378 } /* main */
 379
 380 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */
 381