obexd/src/main.c

   1 /*
   2  *
   3  *  OBEX Server
   4  *
   5  *  Copyright (C) 2007-2010  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  21  *
  22  */
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include <stdio.h>
  29 #include <errno.h>
  30 #include <unistd.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <signal.h>
  34 #include <stdint.h>
  35 #include <sys/types.h>
  36 #include <sys/stat.h>
  37 #include <sys/wait.h>
  38 #include <sys/signalfd.h>
  39 #include <fcntl.h>
  40 #include <termios.h>
  41 #include <getopt.h>
  42 #include <syslog.h>
  43 #include <glib.h>
  44
  45 #include "gdbus/gdbus.h"
  46
  47 #include "../client/manager.h"
  48
  49 #include "log.h"
  50 #include "obexd.h"
  51 #include "server.h"
  52
  53 #define DEFAULT_CAP_FILE CONFIGDIR "/capability.xml"
  54
  55 static GMainLoop *main_loop = NULL;
  56
  57 static gboolean signal_handler(GIOChannel *channel, GIOCondition cond,
  58                                                         gpointer user_data)
  59 {
  60         static unsigned int __terminated = 0;
  61         struct signalfd_siginfo si;
  62         ssize_t result;
  63         int fd;
  64
  65         if (cond & (G_IO_NVAL | G_IO_ERR | G_IO_HUP))
  66                 return FALSE;
  67
  68         fd = g_io_channel_unix_get_fd(channel);
  69
  70         result = read(fd, &si, sizeof(si));
  71         if (result != sizeof(si))
  72                 return FALSE;
  73
  74         switch (si.ssi_signo) {
  75         case SIGINT:
  76         case SIGTERM:
  77                 if (__terminated == 0) {
  78                         info("Terminating");
  79                         g_main_loop_quit(main_loop);
  80                 }
  81
  82                 __terminated = 1;
  83                 break;
  84         case SIGUSR2:
  85                 __obex_log_enable_debug();
  86                 break;
  87         }
  88
  89         return TRUE;
  90 }
  91
  92 static guint setup_signalfd(void)
  93 {
  94         GIOChannel *channel;
  95         guint source;
  96         sigset_t mask;
  97         int fd;
  98
  99         sigemptyset(&mask);
 100         sigaddset(&mask, SIGINT);
 101         sigaddset(&mask, SIGTERM);
 102         sigaddset(&mask, SIGUSR2);
 103
 104         if (sigprocmask(SIG_BLOCK, &mask, NULL) < 0) {
 105                 perror("Failed to set signal mask");
 106                 return 0;
 107         }
 108
 109         fd = signalfd(-1, &mask, 0);
 110         if (fd < 0) {
 111                 perror("Failed to create signal descriptor");
 112                 return 0;
 113         }
 114
 115         channel = g_io_channel_unix_new(fd);
 116
 117         g_io_channel_set_close_on_unref(channel, TRUE);
 118         g_io_channel_set_encoding(channel, NULL, NULL);
 119         g_io_channel_set_buffered(channel, FALSE);
 120
 121         source = g_io_add_watch(channel,
 122                                 G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
 123                                 signal_handler, NULL);
 124
 125         g_io_channel_unref(channel);
 126
 127         return source;
 128 }
 129
 130 static gboolean option_detach = TRUE;
 131 static char *option_debug = NULL;
 132
 133 static char *option_root = NULL;
 134 static char *option_root_setup = NULL;
 135 static char *option_capability = NULL;
 136 static char *option_plugin = NULL;
 137 static char *option_noplugin = NULL;
 138
 139 static gboolean option_autoaccept = FALSE;
 140 static gboolean option_symlinks = FALSE;
 141
 142 static gboolean parse_debug(const char *key, const char *value,
 143                                 gpointer user_data, GError **error)
 144 {
 145         if (value)
 146                 option_debug = g_strdup(value);
 147         else
 148                 option_debug = g_strdup("*");
 149
 150         return TRUE;
 151 }
 152
 153 static GOptionEntry options[] = {
 154         { "debug", 'd', G_OPTION_FLAG_OPTIONAL_ARG,
 155                                 G_OPTION_ARG_CALLBACK, parse_debug,
 156                                 "Enable debug information output", "DEBUG" },
 157         { "plugin", 'p', 0, G_OPTION_ARG_STRING, &option_plugin,
 158                                 "Specify plugins to load", "NAME,..." },
 159         { "noplugin", 'P', 0, G_OPTION_ARG_STRING, &option_noplugin,
 160                                 "Specify plugins not to load", "NAME,..." },
 161         { "nodetach", 'n', G_OPTION_FLAG_REVERSE,
 162                                 G_OPTION_ARG_NONE, &option_detach,
 163                                 "Run with logging in foreground" },
 164         { "root", 'r', 0, G_OPTION_ARG_STRING, &option_root,
 165                                 "Specify root folder location. Both absolute "
 166                                 "and relative can be used, but relative paths "
 167                                 "are assumed to be relative to user $HOME "
 168                                 "folder. Default $XDG_CACHE_HOME", "PATH" },
 169         { "root-setup", 'S', 0, G_OPTION_ARG_STRING, &option_root_setup,
 170                                 "Root folder setup script", "SCRIPT" },
 171         { "symlinks", 'l', 0, G_OPTION_ARG_NONE, &option_symlinks,
 172                                 "Allow symlinks leading outside of the root "
 173                                 "folder" },
 174         { "capability", 'c', 0, G_OPTION_ARG_STRING, &option_capability,
 175                                 "Specify capability file, use '!' mark for "
 176                                 "scripts", "FILE" },
 177         { "auto-accept", 'a', 0, G_OPTION_ARG_NONE, &option_autoaccept,
 178                                 "Automatically accept push requests" },
 179         { NULL },
 180 };
 181
 182 #ifdef __TIZEN_PATCH__
 183 void obex_option_set_root_folder(const char *root)
 184 {
 185         g_free(option_root);
 186         option_root = g_strdup(root);
 187 }
 188 #endif
 189
 190 gboolean obex_option_auto_accept(void)
 191 {
 192         return option_autoaccept;
 193 }
 194
 195 const char *obex_option_root_folder(void)
 196 {
 197         return option_root;
 198 }
 199
 200 gboolean obex_option_symlinks(void)
 201 {
 202         return option_symlinks;
 203 }
 204
 205 const char *obex_option_capability(void)
 206 {
 207         return option_capability;
 208 }
 209
 210 static gboolean is_dir(const char *dir)
 211 {
 212         struct stat st;
 213
 214         if (stat(dir, &st) < 0) {
 215                 error("stat(%s): %s (%d)", dir, strerror(errno), errno);
 216                 return FALSE;
 217         }
 218
 219         return S_ISDIR(st.st_mode);
 220 }
 221
 222 static gboolean root_folder_setup(char *root, char *root_setup)
 223 {
 224         int status;
 225         char *argv[3] = { root_setup, root, NULL };
 226
 227         if (is_dir(root))
 228                 return TRUE;
 229
 230         if (root_setup == NULL)
 231                 return FALSE;
 232
 233         DBG("Setting up %s using %s", root, root_setup);
 234
 235         if (!g_spawn_sync(NULL, argv, NULL, 0, NULL, NULL, NULL, NULL,
 236                                                         &status, NULL)) {
 237                 error("Unable to execute %s", root_setup);
 238                 return FALSE;
 239         }
 240
 241         if (WEXITSTATUS(status) != EXIT_SUCCESS) {
 242                 error("%s exited with status %d", root_setup,
 243                                                         WEXITSTATUS(status));
 244                 return FALSE;
 245         }
 246
 247         return is_dir(root);
 248 }
 249
 250 int main(int argc, char *argv[])
 251 {
 252         GOptionContext *context;
 253         GError *err = NULL;
 254         guint signal;
 255
 256 #ifdef NEED_THREADS
 257         if (g_thread_supported() == FALSE)
 258                 g_thread_init(NULL);
 259 #endif
 260
 261         context = g_option_context_new(NULL);
 262         g_option_context_add_main_entries(context, options, NULL);
 263
 264         if (g_option_context_parse(context, &argc, &argv, &err) == FALSE) {
 265                 if (err != NULL) {
 266                         g_printerr("%s\n", err->message);
 267                         g_error_free(err);
 268                 } else
 269                         g_printerr("An unknown error occurred\n");
 270                 exit(EXIT_FAILURE);
 271         }
 272
 273         g_option_context_free(context);
 274
 275         __obex_log_init(option_debug, option_detach);
 276
 277         DBG("Entering main loop");
 278
 279         main_loop = g_main_loop_new(NULL, FALSE);
 280
 281         signal = setup_signalfd();
 282
 283 #ifdef NEED_THREADS
 284         if (dbus_threads_init_default() == FALSE) {
 285                 fprintf(stderr, "Can't init usage of threads\n");
 286                 exit(EXIT_FAILURE);
 287         }
 288 #endif
 289
 290         if (manager_init() == FALSE) {
 291                 error("manager_init failed");
 292                 exit(EXIT_FAILURE);
 293         }
 294
 295         if (option_root == NULL) {
 296                 option_root = g_build_filename(g_get_user_cache_dir(), "obexd",
 297                                                                         NULL);
 298                 g_mkdir_with_parents(option_root, 0700);
 299         }
 300
 301         if (option_root[0] != '/') {
 302                 const char *home = getenv("HOME");
 303                 if (home) {
 304                         char *old_root = option_root;
 305                         option_root = g_strdup_printf("%s/%s", home, old_root);
 306                         g_free(old_root);
 307                 }
 308         }
 309
 310         if (option_capability == NULL)
 311                 option_capability = g_strdup(DEFAULT_CAP_FILE);
 312
 313         plugin_init(option_plugin, option_noplugin);
 314
 315         if (obex_server_init() < 0) {
 316                 error("obex_server_init failed");
 317                 exit(EXIT_FAILURE);
 318         }
 319
 320         if (!root_folder_setup(option_root, option_root_setup)) {
 321                 error("Unable to setup root folder %s", option_root);
 322                 exit(EXIT_FAILURE);
 323         }
 324
 325         if (client_manager_init() < 0) {
 326                 error("client_manager_init failed");
 327                 exit(EXIT_FAILURE);
 328         }
 329
 330         g_main_loop_run(main_loop);
 331
 332         g_source_remove(signal);
 333
 334         client_manager_exit();
 335
 336         obex_server_exit();
 337
 338         plugin_cleanup();
 339
 340         manager_cleanup();
 341
 342         g_main_loop_unref(main_loop);
 343
 344         g_free(option_capability);
 345         g_free(option_root);
 346
 347         __obex_log_cleanup();
 348
 349         return 0;
 350 }