src/remote.c

   1 /*
   2  * Copyright (C) 2004 John Ellis
   3  * Copyright (C) 2008 - 2016 The Geeqie Team
   4  *
   5  * Author: John Ellis
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include "main.h"
  23 #include "remote.h"
  24
  25 #include "cache_maint.h"
  26 #include "collect.h"
  27 #include "filedata.h"
  28 #include "image.h"
  29 #include "img-view.h"
  30 #include "layout.h"
  31 #include "layout_image.h"
  32 #include "misc.h"
  33 #include "slideshow.h"
  34 #include "ui_fileops.h"
  35 #include "rcfile.h"
  36
  37 #include <sys/socket.h>
  38 #include <sys/un.h>
  39 #include <signal.h>
  40 #include <errno.h>
  41
  42 #include "glua.h"
  43
  44 #define SERVER_MAX_CLIENTS 8
  45
  46 #define REMOTE_SERVER_BACKLOG 4
  47
  48
  49 #ifndef UNIX_PATH_MAX
  50 #define UNIX_PATH_MAX 108
  51 #endif
  52
  53
  54 static RemoteConnection *remote_client_open(const gchar *path);
  55 static gint remote_client_send(RemoteConnection *rc, const gchar *text);
  56 static void gr_raise(const gchar *text, GIOChannel *channel, gpointer data);
  57
  58
  59 typedef struct _RemoteClient RemoteClient;
  60 struct _RemoteClient {
  61         gint fd;
  62         guint channel_id; /* event source id */
  63         RemoteConnection *rc;
  64 };
  65
  66 typedef struct _RemoteData RemoteData;
  67 struct _RemoteData {
  68         CollectionData *command_collection;
  69 };
  70
  71
  72 static gboolean remote_server_client_cb(GIOChannel *source, GIOCondition condition, gpointer data)
  73 {
  74         RemoteClient *client = data;
  75         RemoteConnection *rc;
  76         GIOStatus status = G_IO_STATUS_NORMAL;
  77
  78         rc = client->rc;
  79
  80         if (condition & G_IO_IN)
  81                 {
  82                 gchar *buffer = NULL;
  83                 GError *error = NULL;
  84                 gsize termpos;
  85
  86                 while ((status = g_io_channel_read_line(source, &buffer, NULL, &termpos, &error)) == G_IO_STATUS_NORMAL)
  87                         {
  88                         if (buffer)
  89                                 {
  90                                 buffer[termpos] = '\0';
  91
  92                                 if (strlen(buffer) > 0)
  93                                         {
  94                                         if (rc->read_func) rc->read_func(rc, buffer, source, rc->read_data);
  95                                         g_io_channel_write_chars(source, "\n", -1, NULL, NULL); /* empty line finishes the command */
  96                                         g_io_channel_flush(source, NULL);
  97                                         }
  98                                 g_free(buffer);
  99
 100                                 buffer = NULL;
 101                                 }
 102                         }
 103
 104                 if (error)
 105                         {
 106                         log_printf("error reading socket: %s\n", error->message);
 107                         g_error_free(error);
 108                         }
 109                 }
 110
 111         if (condition & G_IO_HUP || status == G_IO_STATUS_EOF || status == G_IO_STATUS_ERROR)
 112                 {
 113                 rc->clients = g_list_remove(rc->clients, client);
 114
 115                 DEBUG_1("HUP detected, closing client.");
 116                 DEBUG_1("client count %d", g_list_length(rc->clients));
 117
 118                 g_source_remove(client->channel_id);
 119                 close(client->fd);
 120                 g_free(client);
 121                 }
 122
 123         return TRUE;
 124 }
 125
 126 static void remote_server_client_add(RemoteConnection *rc, gint fd)
 127 {
 128         RemoteClient *client;
 129         GIOChannel *channel;
 130
 131         if (g_list_length(rc->clients) > SERVER_MAX_CLIENTS)
 132                 {
 133                 log_printf("maximum remote clients of %d exceeded, closing connection\n", SERVER_MAX_CLIENTS);
 134                 close(fd);
 135                 return;
 136                 }
 137
 138         client = g_new0(RemoteClient, 1);
 139         client->rc = rc;
 140         client->fd = fd;
 141
 142         channel = g_io_channel_unix_new(fd);
 143         client->channel_id = g_io_add_watch_full(channel, G_PRIORITY_DEFAULT, G_IO_IN | G_IO_HUP,
 144                                                  remote_server_client_cb, client, NULL);
 145         g_io_channel_unref(channel);
 146
 147         rc->clients = g_list_append(rc->clients, client);
 148         DEBUG_1("client count %d", g_list_length(rc->clients));
 149 }
 150
 151 static void remote_server_clients_close(RemoteConnection *rc)
 152 {
 153         while (rc->clients)
 154                 {
 155                 RemoteClient *client = rc->clients->data;
 156
 157                 rc->clients = g_list_remove(rc->clients, client);
 158
 159                 g_source_remove(client->channel_id);
 160                 close(client->fd);
 161                 g_free(client);
 162                 }
 163 }
 164
 165 static gboolean remote_server_read_cb(GIOChannel *source, GIOCondition condition, gpointer data)
 166 {
 167         RemoteConnection *rc = data;
 168         gint fd;
 169         guint alen;
 170
 171         fd = accept(rc->fd, NULL, &alen);
 172         if (fd == -1)
 173                 {
 174                 log_printf("error accepting socket: %s\n", strerror(errno));
 175                 return TRUE;
 176                 }
 177
 178         remote_server_client_add(rc, fd);
 179
 180         return TRUE;
 181 }
 182
 183 static gboolean remote_server_exists(const gchar *path)
 184 {
 185         RemoteConnection *rc;
 186
 187         /* verify server up */
 188         rc = remote_client_open(path);
 189         remote_close(rc);
 190
 191         if (rc) return TRUE;
 192
 193         /* unable to connect, remove socket file to free up address */
 194         unlink(path);
 195         return FALSE;
 196 }
 197
 198 static RemoteConnection *remote_server_open(const gchar *path)
 199 {
 200         RemoteConnection *rc;
 201         struct sockaddr_un addr;
 202         gint sun_path_len;
 203         gint fd;
 204         GIOChannel *channel;
 205
 206         if (remote_server_exists(path))
 207                 {
 208                 log_printf("Address already in use: %s\n", path);
 209                 return NULL;
 210                 }
 211
 212         fd = socket(PF_UNIX, SOCK_STREAM, 0);
 213         if (fd == -1) return NULL;
 214
 215         addr.sun_family = AF_UNIX;
 216         sun_path_len = MIN(strlen(path) + 1, UNIX_PATH_MAX);
 217         strncpy(addr.sun_path, path, sun_path_len);
 218         if (bind(fd, &addr, sizeof(addr)) == -1 ||
 219             listen(fd, REMOTE_SERVER_BACKLOG) == -1)
 220                 {
 221                 log_printf("error subscribing to socket: %s\n", strerror(errno));
 222                 close(fd);
 223                 return NULL;
 224                 }
 225
 226         rc = g_new0(RemoteConnection, 1);
 227
 228         rc->server = TRUE;
 229         rc->fd = fd;
 230         rc->path = g_strdup(path);
 231
 232         channel = g_io_channel_unix_new(rc->fd);
 233         g_io_channel_set_flags(channel, G_IO_FLAG_NONBLOCK, NULL);
 234
 235         rc->channel_id = g_io_add_watch_full(channel, G_PRIORITY_DEFAULT, G_IO_IN,
 236                                              remote_server_read_cb, rc, NULL);
 237         g_io_channel_unref(channel);
 238
 239         return rc;
 240 }
 241
 242 static void remote_server_subscribe(RemoteConnection *rc, RemoteReadFunc *func, gpointer data)
 243 {
 244         if (!rc || !rc->server) return;
 245
 246         rc->read_func = func;
 247         rc->read_data = data;
 248 }
 249
 250
 251 static RemoteConnection *remote_client_open(const gchar *path)
 252 {
 253         RemoteConnection *rc;
 254         struct stat st;
 255         struct sockaddr_un addr;
 256         gint sun_path_len;
 257         gint fd;
 258
 259         if (stat(path, &st) != 0 || !S_ISSOCK(st.st_mode)) return NULL;
 260
 261         fd = socket(PF_UNIX, SOCK_STREAM, 0);
 262         if (fd == -1) return NULL;
 263
 264         addr.sun_family = AF_UNIX;
 265         sun_path_len = MIN(strlen(path) + 1, UNIX_PATH_MAX);
 266         strncpy(addr.sun_path, path, sun_path_len);
 267         if (connect(fd, &addr, sizeof(addr)) == -1)
 268                 {
 269                 DEBUG_1("error connecting to socket: %s", strerror(errno));
 270                 close(fd);
 271                 return NULL;
 272                 }
 273
 274         rc = g_new0(RemoteConnection, 1);
 275         rc->server = FALSE;
 276         rc->fd = fd;
 277         rc->path = g_strdup(path);
 278
 279         return rc;
 280 }
 281
 282 static sig_atomic_t sigpipe_occured = FALSE;
 283
 284 static void sighandler_sigpipe(gint sig)
 285 {
 286         sigpipe_occured = TRUE;
 287 }
 288
 289 static gboolean remote_client_send(RemoteConnection *rc, const gchar *text)
 290 {
 291         struct sigaction new_action, old_action;
 292         gboolean ret = FALSE;
 293         GError *error = NULL;
 294         GIOChannel *channel;
 295
 296         if (!rc || rc->server) return FALSE;
 297         if (!text) return TRUE;
 298
 299         sigpipe_occured = FALSE;
 300
 301         new_action.sa_handler = sighandler_sigpipe;
 302         sigemptyset(&new_action.sa_mask);
 303         new_action.sa_flags = 0;
 304
 305         /* setup our signal handler */
 306         sigaction(SIGPIPE, &new_action, &old_action);
 307
 308         channel = g_io_channel_unix_new(rc->fd);
 309
 310         g_io_channel_write_chars(channel, text, -1, NULL, &error);
 311         g_io_channel_write_chars(channel, "\n", -1, NULL, &error);
 312         g_io_channel_flush(channel, &error);
 313
 314         if (error)
 315                 {
 316                 log_printf("error reading socket: %s\n", error->message);
 317                 g_error_free(error);
 318                 ret = FALSE;;
 319                 }
 320         else
 321                 {
 322                 ret = TRUE;
 323                 }
 324
 325         if (ret)
 326                 {
 327                 gchar *buffer = NULL;
 328                 gsize termpos;
 329                 while (g_io_channel_read_line(channel, &buffer, NULL, &termpos, &error) == G_IO_STATUS_NORMAL)
 330                         {
 331                         if (buffer)
 332                                 {
 333                                 if (buffer[0] == '\n') /* empty line finishes the command */
 334                                         {
 335                                         g_free(buffer);
 336                                         fflush(stdout);
 337                                         break;
 338                                         }
 339                                 buffer[termpos] = '\0';
 340                                 printf("%s\n", buffer);
 341                                 g_free(buffer);
 342                                 buffer = NULL;
 343                                 }
 344                         }
 345
 346                 if (error)
 347                         {
 348                         log_printf("error reading socket: %s\n", error->message);
 349                         g_error_free(error);
 350                         ret = FALSE;
 351                         }
 352                 }
 353
 354
 355         /* restore the original signal handler */
 356         sigaction(SIGPIPE, &old_action, NULL);
 357         g_io_channel_unref(channel);
 358         return ret;
 359 }
 360
 361 void remote_close(RemoteConnection *rc)
 362 {
 363         if (!rc) return;
 364
 365         if (rc->server)
 366                 {
 367                 remote_server_clients_close(rc);
 368
 369                 g_source_remove(rc->channel_id);
 370                 unlink(rc->path);
 371                 }
 372
 373         if (rc->read_data)
 374                 g_free(rc->read_data);
 375
 376         close(rc->fd);
 377
 378         g_free(rc->path);
 379         g_free(rc);
 380 }
 381
 382 /*
 383  *-----------------------------------------------------------------------------
 384  * remote functions
 385  *-----------------------------------------------------------------------------
 386  */
 387
 388 static void gr_image_next(const gchar *text, GIOChannel *channel, gpointer data)
 389 {
 390         layout_image_next(NULL);
 391 }
 392
 393 static void gr_image_prev(const gchar *text, GIOChannel *channel, gpointer data)
 394 {
 395         layout_image_prev(NULL);
 396 }
 397
 398 static void gr_image_first(const gchar *text, GIOChannel *channel, gpointer data)
 399 {
 400         layout_image_first(NULL);
 401 }
 402
 403 static void gr_image_last(const gchar *text, GIOChannel *channel, gpointer data)
 404 {
 405         layout_image_last(NULL);
 406 }
 407
 408 static void gr_fullscreen_toggle(const gchar *text, GIOChannel *channel, gpointer data)
 409 {
 410         layout_image_full_screen_toggle(NULL);
 411 }
 412
 413 static void gr_fullscreen_start(const gchar *text, GIOChannel *channel, gpointer data)
 414 {
 415         layout_image_full_screen_start(NULL);
 416 }
 417
 418 static void gr_fullscreen_stop(const gchar *text, GIOChannel *channel, gpointer data)
 419 {
 420         layout_image_full_screen_stop(NULL);
 421 }
 422
 423 static void gr_slideshow_start_rec(const gchar *text, GIOChannel *channel, gpointer data)
 424 {
 425         GList *list;
 426         FileData *dir_fd = file_data_new_dir(text);
 427         list = filelist_recursive(dir_fd);
 428         file_data_unref(dir_fd);
 429         if (!list) return;
 430 //printf("length: %d\n", g_list_length(list));
 431         layout_image_slideshow_stop(NULL);
 432         layout_image_slideshow_start_from_list(NULL, list);
 433 }
 434
 435 static void gr_cache_thumb(const gchar *text, GIOChannel *channel, gpointer data)
 436 {
 437         if (!g_strcmp0(text, "clear"))
 438                 cache_maintain_home_remote(FALSE, TRUE);
 439         else if (!g_strcmp0(text, "clean"))
 440                 cache_maintain_home_remote(FALSE, FALSE);
 441 }
 442
 443 static void gr_cache_shared(const gchar *text, GIOChannel *channel, gpointer data)
 444 {
 445         if (!g_strcmp0(text, "clear"))
 446                 cache_manager_standard_process_remote(TRUE);
 447         else if (!g_strcmp0(text, "clean"))
 448                 cache_manager_standard_process_remote(FALSE);
 449 }
 450
 451 static void gr_cache_metadata(const gchar *text, GIOChannel *channel, gpointer data)
 452 {
 453         cache_maintain_home_remote(TRUE, FALSE);
 454 }
 455
 456 static void gr_cache_render(const gchar *text, GIOChannel *channel, gpointer data)
 457 {
 458         cache_manager_render_remote(text, FALSE, FALSE);
 459 }
 460
 461 static void gr_cache_render_recurse(const gchar *text, GIOChannel *channel, gpointer data)
 462 {
 463         cache_manager_render_remote(text, TRUE, FALSE);
 464 }
 465
 466 static void gr_cache_render_standard(const gchar *text, GIOChannel *channel, gpointer data)
 467 {
 468         if(options->thumbnails.spec_standard)
 469                 cache_manager_render_remote(text, FALSE, TRUE);
 470 }
 471
 472 static void gr_cache_render_standard_recurse(const gchar *text, GIOChannel *channel, gpointer data)
 473 {
 474         if(options->thumbnails.spec_standard)
 475                 cache_manager_render_remote(text, TRUE, TRUE);
 476 }
 477
 478 static void gr_slideshow_toggle(const gchar *text, GIOChannel *channel, gpointer data)
 479 {
 480         layout_image_slideshow_toggle(NULL);
 481 }
 482
 483 static void gr_slideshow_start(const gchar *text, GIOChannel *channel, gpointer data)
 484 {
 485         layout_image_slideshow_start(NULL);
 486 }
 487
 488 static void gr_slideshow_stop(const gchar *text, GIOChannel *channel, gpointer data)
 489 {
 490         layout_image_slideshow_stop(NULL);
 491 }
 492
 493 static void gr_slideshow_delay(const gchar *text, GIOChannel *channel, gpointer data)
 494 {
 495         gdouble n;
 496
 497         n = g_ascii_strtod(text, NULL);
 498         if (n < SLIDESHOW_MIN_SECONDS || n > SLIDESHOW_MAX_SECONDS)
 499                 {
 500                 printf_term("Remote slideshow delay out of range (%.1f to %.1f)\n",
 501                             SLIDESHOW_MIN_SECONDS, SLIDESHOW_MAX_SECONDS);
 502                 return;
 503                 }
 504         options->slideshow.delay = (gint)(n * 10.0 + 0.01);
 505 }
 506
 507 static void gr_tools_show(const gchar *text, GIOChannel *channel, gpointer data)
 508 {
 509         gboolean popped;
 510         gboolean hidden;
 511
 512         if (layout_tools_float_get(NULL, &popped, &hidden) && hidden)
 513                 {
 514                 layout_tools_float_set(NULL, popped, FALSE);
 515                 }
 516 }
 517
 518 static void gr_tools_hide(const gchar *text, GIOChannel *channel, gpointer data)
 519 {
 520         gboolean popped;
 521         gboolean hidden;
 522
 523         if (layout_tools_float_get(NULL, &popped, &hidden) && !hidden)
 524                 {
 525                 layout_tools_float_set(NULL, popped, TRUE);
 526                 }
 527 }
 528
 529 static gboolean gr_quit_idle_cb(gpointer data)
 530 {
 531         exit_program();
 532
 533         return FALSE;
 534 }
 535
 536 static void gr_quit(const gchar *text, GIOChannel *channel, gpointer data)
 537 {
 538         /* schedule exit when idle, if done from within a
 539          * remote handler remote_close will crash
 540          */
 541         g_idle_add(gr_quit_idle_cb, NULL);
 542 }
 543
 544 static void gr_file_load_no_raise(const gchar *text, GIOChannel *channel, gpointer data)
 545 {
 546         gchar *filename = expand_tilde(text);
 547
 548         if (isfile(filename))
 549                 {
 550                 if (file_extension_match(filename, GQ_COLLECTION_EXT))
 551                         {
 552                         collection_window_new(filename);
 553                         }
 554                 else
 555                         {
 556                         layout_set_path(NULL, filename);
 557                         }
 558                 }
 559         else if (isdir(filename))
 560                 {
 561                 layout_set_path(NULL, filename);
 562                 }
 563         else
 564                 {
 565                 log_printf("remote sent filename that does not exist:\"%s\"\n", filename);
 566                 layout_set_path(NULL, homedir());
 567                 }
 568
 569         g_free(filename);
 570 }
 571
 572 static void gr_file_load(const gchar *text, GIOChannel *channel, gpointer data)
 573 {
 574         gr_file_load_no_raise(text, channel, data);
 575
 576         gr_raise(text, channel, data);
 577 }
 578
 579 static void gr_file_tell(const gchar *text, GIOChannel *channel, gpointer data)
 580 {
 581         LayoutWindow *lw = NULL; /* NULL to force layout_valid() to do some magic */
 582         if (!layout_valid(&lw)) return;
 583         if (image_get_path(lw->image))
 584                 {
 585                 g_io_channel_write_chars(channel, image_get_path(lw->image), -1, NULL, NULL);
 586                 g_io_channel_write_chars(channel, "\n", -1, NULL, NULL);
 587                 }
 588 }
 589
 590 static void gr_config_load(const gchar *text, GIOChannel *channel, gpointer data)
 591 {
 592         gchar *filename = expand_tilde(text);
 593
 594         if (isfile(filename))
 595                 {
 596                 load_config_from_file(filename, FALSE);
 597                 }
 598         else
 599                 {
 600                 log_printf("remote sent filename that does not exist:\"%s\"\n", filename);
 601                 layout_set_path(NULL, homedir());
 602                 }
 603
 604         g_free(filename);
 605 }
 606
 607 static void gr_get_sidecars(const gchar *text, GIOChannel *channel, gpointer data)
 608 {
 609         gchar *filename = expand_tilde(text);
 610         FileData *fd = file_data_new_group(filename);
 611
 612         GList *work;
 613         if (fd->parent) fd = fd->parent;
 614
 615         g_io_channel_write_chars(channel, fd->path, -1, NULL, NULL);
 616         g_io_channel_write_chars(channel, "\n", -1, NULL, NULL);
 617
 618         work = fd->sidecar_files;
 619
 620         while (work)
 621                 {
 622                 fd = work->data;
 623                 work = work->next;
 624                 g_io_channel_write_chars(channel, fd->path, -1, NULL, NULL);
 625                 g_io_channel_write_chars(channel, "\n", -1, NULL, NULL);
 626                 }
 627         g_free(filename);
 628 }
 629
 630 static void gr_get_destination(const gchar *text, GIOChannel *channel, gpointer data)
 631 {
 632         gchar *filename = expand_tilde(text);
 633         FileData *fd = file_data_new_group(filename);
 634
 635         if (fd->change && fd->change->dest)
 636                 {
 637                 g_io_channel_write_chars(channel, fd->change->dest, -1, NULL, NULL);
 638                 g_io_channel_write_chars(channel, "\n", -1, NULL, NULL);
 639                 }
 640         g_free(filename);
 641 }
 642
 643 static void gr_file_view(const gchar *text, GIOChannel *channel, gpointer data)
 644 {
 645         gchar *filename = expand_tilde(text);
 646
 647         view_window_new(file_data_new_group(filename));
 648         g_free(filename);
 649 }
 650
 651 static void gr_list_clear(const gchar *text, GIOChannel *channel, gpointer data)
 652 {
 653         RemoteData *remote_data = data;
 654
 655         if (remote_data->command_collection)
 656                 {
 657                 collection_unref(remote_data->command_collection);
 658                 remote_data->command_collection = NULL;
 659                 }
 660 }
 661
 662 static void gr_list_add(const gchar *text, GIOChannel *channel, gpointer data)
 663 {
 664         RemoteData *remote_data = data;
 665         gboolean new = TRUE;
 666
 667         if (!remote_data->command_collection)
 668                 {
 669                 CollectionData *cd;
 670
 671                 cd = collection_new("");
 672
 673                 g_free(cd->path);
 674                 cd->path = NULL;
 675                 g_free(cd->name);
 676                 cd->name = g_strdup(_("Command line"));
 677
 678                 remote_data->command_collection = cd;
 679                 }
 680         else
 681                 {
 682                 new = (!collection_get_first(remote_data->command_collection));
 683                 }
 684
 685         if (collection_add(remote_data->command_collection, file_data_new_group(text), FALSE) && new)
 686                 {
 687                 layout_image_set_collection(NULL, remote_data->command_collection,
 688                                             collection_get_first(remote_data->command_collection));
 689                 }
 690 }
 691
 692 static void gr_raise(const gchar *text, GIOChannel *channel, gpointer data)
 693 {
 694         LayoutWindow *lw = NULL;
 695
 696         if (layout_valid(&lw))
 697                 {
 698                 gtk_window_present(GTK_WINDOW(lw->window));
 699                 }
 700 }
 701
 702 #ifdef HAVE_LUA
 703 static void gr_lua(const gchar *text, GIOChannel *channel, gpointer data)
 704 {
 705         gchar *result = NULL;
 706         gchar **lua_command;
 707
 708         lua_command = g_strsplit(text, ",", 2);
 709
 710         if (lua_command[0] && lua_command[1])
 711                 {
 712                 FileData *fd = file_data_new_group(lua_command[0]);
 713                 result = g_strdup(lua_callvalue(fd, lua_command[1], NULL));
 714                 if (result)
 715                         {
 716                         g_io_channel_write_chars(channel, result, -1, NULL, NULL);
 717                         }
 718                 else
 719                         {
 720                         g_io_channel_write_chars(channel, N_("lua error: no data"), -1, NULL, NULL);
 721                         }
 722                 }
 723         else
 724                 {
 725                 g_io_channel_write_chars(channel, N_("lua error: no data"), -1, NULL, NULL);
 726                 }
 727
 728         g_io_channel_write_chars(channel, "\n", -1, NULL, NULL);
 729
 730         g_strfreev(lua_command);
 731         g_free(result);
 732 }
 733 #endif
 734
 735 typedef struct _RemoteCommandEntry RemoteCommandEntry;
 736 struct _RemoteCommandEntry {
 737         gchar *opt_s;
 738         gchar *opt_l;
 739         void (*func)(const gchar *text, GIOChannel *channel, gpointer data);
 740         gboolean needs_extra;
 741         gboolean prefer_command_line;
 742         gchar *parameter;
 743         gchar *description;
 744 };
 745
 746 static RemoteCommandEntry remote_commands[] = {
 747         /* short, long                  callback,               extra, prefer, parameter, description */
 748         { "-n", "--next",               gr_image_next,          FALSE, FALSE, NULL, N_("next image") },
 749         { "-b", "--back",               gr_image_prev,          FALSE, FALSE, NULL, N_("previous image") },
 750         { NULL, "--first",              gr_image_first,         FALSE, FALSE, NULL, N_("first image") },
 751         { NULL, "--last",               gr_image_last,          FALSE, FALSE, NULL, N_("last image") },
 752         { "-f", "--fullscreen",         gr_fullscreen_toggle,   FALSE, TRUE,  NULL, N_("toggle full screen") },
 753         { "-fs","--fullscreen-start",   gr_fullscreen_start,    FALSE, FALSE, NULL, N_("start full screen") },
 754         { "-fS","--fullscreen-stop",    gr_fullscreen_stop,     FALSE, FALSE, NULL, N_("stop full screen") },
 755         { "-s", "--slideshow",          gr_slideshow_toggle,    FALSE, TRUE,  NULL, N_("toggle slide show") },
 756         { "-ss","--slideshow-start",    gr_slideshow_start,     FALSE, FALSE, NULL, N_("start slide show") },
 757         { "-sS","--slideshow-stop",     gr_slideshow_stop,      FALSE, FALSE, NULL, N_("stop slide show") },
 758         { NULL, "--slideshow-recurse:", gr_slideshow_start_rec, TRUE,  FALSE, N_("<FOLDER>"), N_("start recursive slide show in FOLDER") },
 759         { "-d", "--delay=",             gr_slideshow_delay,     TRUE,  FALSE, N_("<[N][.M]>"), N_("set slide show delay to N.M seconds") },
 760         { "+t", "--tools-show",         gr_tools_show,          FALSE, TRUE,  NULL, N_("show tools") },
 761         { "-t", "--tools-hide",         gr_tools_hide,          FALSE, TRUE,  NULL, N_("hide tools") },
 762         { "-q", "--quit",               gr_quit,                FALSE, FALSE, NULL, N_("quit") },
 763         { NULL, "--config-load:",       gr_config_load,         TRUE,  FALSE, N_("<FILE>"), N_("load configuration from FILE") },
 764         { NULL, "--get-sidecars:",      gr_get_sidecars,        TRUE,  FALSE, N_("<FILE>"), N_("get list of sidecars of FILE") },
 765         { NULL, "--get-destination:",   gr_get_destination,     TRUE,  FALSE, N_("<FILE>"), N_("get destination path of FILE") },
 766         { NULL, "file:",                gr_file_load,           TRUE,  FALSE, N_("<FILE>"), N_("open FILE, bring Geeqie window to the top") },
 767         { NULL, "File:",                gr_file_load_no_raise,  TRUE,  FALSE, N_("<FILE>"), N_("open FILE, do not bring Geeqie window to the top") },
 768         { NULL, "--tell",               gr_file_tell,           FALSE, FALSE, NULL, N_("print filename of current image") },
 769         { NULL, "view:",                gr_file_view,           TRUE,  FALSE, N_("<FILE>"), N_("open FILE in new window") },
 770         { NULL, "--list-clear",         gr_list_clear,          FALSE, FALSE, NULL, N_("clear command line collection list") },
 771         { NULL, "--list-add:",          gr_list_add,            TRUE,  FALSE, N_("<FILE>"), N_("add FILE to command line collection list") },
 772         { NULL, "raise",                gr_raise,               FALSE, FALSE, NULL, N_("bring the Geeqie window to the top") },
 773         { "-ct:", "--cache-thumbs:",    gr_cache_thumb,         TRUE, FALSE, N_("clear|clean"), N_("clear or clean thumbnail cache") },
 774         { "-cs:", "--cache-shared:",    gr_cache_shared,        TRUE, FALSE, N_("clear|clean"), N_("clear or clean shared thumbnail cache") },
 775         { "-cm","--cache-metadata",      gr_cache_metadata,               FALSE, FALSE, NULL, N_("    clean the metadata cache") },
 776         { "-cr:", "--cache-render:",    gr_cache_render,        TRUE, FALSE, N_("<folder>  "), N_(" render thumbnails") },
 777         { "-crr:", "--cache-render-recurse:", gr_cache_render_recurse, TRUE, FALSE, N_("<folder> "), N_("render thumbnails recursively") },
 778         { "-crs:", "--cache-render-shared:", gr_cache_render_standard, TRUE, FALSE, N_("<folder> "), N_(" render thumbnails (see Help)") },
 779         { "-crsr:", "--cache-render-shared-recurse:", gr_cache_render_standard_recurse, TRUE, FALSE, N_("<folder>"), N_(" render thumbnails recursively (see Help)") },
 780 #ifdef HAVE_LUA
 781         { NULL, "--lua:",               gr_lua,                 TRUE, FALSE, N_("<FILE>,<lua script>"), N_("run lua script on FILE") },
 782 #endif
 783         { NULL, NULL, NULL, FALSE, FALSE, NULL, NULL }
 784 };
 785
 786 static RemoteCommandEntry *remote_command_find(const gchar *text, const gchar **offset)
 787 {
 788         gboolean match = FALSE;
 789         gint i;
 790
 791         i = 0;
 792         while (!match && remote_commands[i].func != NULL)
 793                 {
 794                 if (remote_commands[i].needs_extra)
 795                         {
 796                         if (remote_commands[i].opt_s &&
 797                             strncmp(remote_commands[i].opt_s, text, strlen(remote_commands[i].opt_s)) == 0)
 798                                 {
 799                                 if (offset) *offset = text + strlen(remote_commands[i].opt_s);
 800                                 return &remote_commands[i];
 801                                 }
 802                         else if (remote_commands[i].opt_l &&
 803                                  strncmp(remote_commands[i].opt_l, text, strlen(remote_commands[i].opt_l)) == 0)
 804                                 {
 805                                 if (offset) *offset = text + strlen(remote_commands[i].opt_l);
 806                                 return &remote_commands[i];
 807                                 }
 808                         }
 809                 else
 810                         {
 811                         if ((remote_commands[i].opt_s && strcmp(remote_commands[i].opt_s, text) == 0) ||
 812                             (remote_commands[i].opt_l && strcmp(remote_commands[i].opt_l, text) == 0))
 813                                 {
 814                                 if (offset) *offset = text;
 815                                 return &remote_commands[i];
 816                                 }
 817                         }
 818
 819                 i++;
 820                 }
 821
 822         return NULL;
 823 }
 824
 825 static void remote_cb(RemoteConnection *rc, const gchar *text, GIOChannel *channel, gpointer data)
 826 {
 827         RemoteCommandEntry *entry;
 828         const gchar *offset;
 829
 830         entry = remote_command_find(text, &offset);
 831         if (entry && entry->func)
 832                 {
 833                 entry->func(offset, channel, data);
 834                 }
 835         else
 836                 {
 837                 log_printf("unknown remote command:%s\n", text);
 838                 }
 839 }
 840
 841 void remote_help(void)
 842 {
 843         gint i;
 844         gchar *s_opt_param;
 845         gchar *l_opt_param;
 846
 847         print_term(_("Remote command list:\n"));
 848
 849         i = 0;
 850         while (remote_commands[i].func != NULL)
 851                 {
 852                 if (remote_commands[i].description)
 853                         {
 854                         s_opt_param = g_strconcat(remote_commands[i].opt_s, remote_commands[i].parameter, NULL);
 855                         l_opt_param = g_strconcat(remote_commands[i].opt_l, remote_commands[i].parameter, NULL);
 856                         printf_term("  %-11s%-1s %-30s%-s\n",
 857                                     (remote_commands[i].opt_s) ? s_opt_param : "",
 858                                     (remote_commands[i].opt_s && remote_commands[i].opt_l) ? "," : " ",
 859                                     (remote_commands[i].opt_l) ? l_opt_param : "",
 860                                     _(remote_commands[i].description));
 861                         g_free(s_opt_param);
 862                         g_free(l_opt_param);
 863                         }
 864                 i++;
 865                 }
 866         printf_term(N_("\n  All other command line parameters are used as plain files if they exists.\n"));
 867 }
 868
 869 GList *remote_build_list(GList *list, gint argc, gchar *argv[], GList **errors)
 870 {
 871         gint i;
 872
 873         i = 1;
 874         while (i < argc)
 875                 {
 876                 RemoteCommandEntry *entry;
 877
 878                 entry = remote_command_find(argv[i], NULL);
 879                 if (entry)
 880                         {
 881                         list = g_list_append(list, argv[i]);
 882                         }
 883                 else if (errors && !isfile(argv[i]))
 884                         {
 885                         *errors = g_list_append(*errors, argv[i]);
 886                         }
 887                 i++;
 888                 }
 889
 890         return list;
 891 }
 892
 893 /**
 894  * \param arg_exec Binary (argv0)
 895  * \param remote_list Evaluated and recognized remote commands
 896  * \param path The current path
 897  * \param cmd_list List of all non collections in Path
 898  * \param collection_list List of all collections in argv
 899  */
 900 void remote_control(const gchar *arg_exec, GList *remote_list, const gchar *path,
 901                     GList *cmd_list, GList *collection_list)
 902 {
 903         RemoteConnection *rc;
 904         gboolean started = FALSE;
 905         gchar *buf;
 906
 907         buf = g_build_filename(get_rc_dir(), ".command", NULL);
 908         rc = remote_client_open(buf);
 909         if (!rc)
 910                 {
 911                 GString *command;
 912                 GList *work;
 913                 gint retry_count = 12;
 914                 gboolean blank = FALSE;
 915
 916                 printf_term(_("Remote %s not running, starting..."), GQ_APPNAME);
 917
 918                 command = g_string_new(arg_exec);
 919
 920                 work = remote_list;
 921                 while (work)
 922                         {
 923                         gchar *text;
 924                         RemoteCommandEntry *entry;
 925
 926                         text = work->data;
 927                         work = work->next;
 928
 929                         entry = remote_command_find(text, NULL);
 930                         if (entry)
 931                                 {
 932                                 if (entry->prefer_command_line)
 933                                         {
 934                                         remote_list = g_list_remove(remote_list, text);
 935                                         g_string_append(command, " ");
 936                                         g_string_append(command, text);
 937                                         }
 938                                 if (entry->opt_l && strcmp(entry->opt_l, "file:") == 0)
 939                                         {
 940                                         blank = TRUE;
 941                                         }
 942                                 }
 943                         }
 944
 945                 if (blank || cmd_list || path) g_string_append(command, " --blank");
 946                 if (get_debug_level()) g_string_append(command, " --debug");
 947
 948                 g_string_append(command, " &");
 949                 runcmd(command->str);
 950                 g_string_free(command, TRUE);
 951
 952                 while (!rc && retry_count > 0)
 953                         {
 954                         usleep((retry_count > 10) ? 500000 : 1000000);
 955                         rc = remote_client_open(buf);
 956                         if (!rc) print_term(".");
 957                         retry_count--;
 958                         }
 959
 960                 print_term("\n");
 961
 962                 started = TRUE;
 963                 }
 964         g_free(buf);
 965
 966         if (rc)
 967                 {
 968                 GList *work;
 969                 const gchar *prefix;
 970                 gboolean use_path = TRUE;
 971                 gboolean sent = FALSE;
 972
 973                 work = remote_list;
 974                 while (work)
 975                         {
 976                         gchar *text;
 977                         RemoteCommandEntry *entry;
 978
 979                         text = work->data;
 980                         work = work->next;
 981
 982                         entry = remote_command_find(text, NULL);
 983                         if (entry &&
 984                             entry->opt_l &&
 985                             strcmp(entry->opt_l, "file:") == 0) use_path = FALSE;
 986
 987                         remote_client_send(rc, text);
 988
 989                         sent = TRUE;
 990                         }
 991
 992                 if (cmd_list && cmd_list->next)
 993                         {
 994                         prefix = "--list-add:";
 995                         remote_client_send(rc, "--list-clear");
 996                         }
 997                 else
 998                         {
 999                         prefix = "file:";
1000                         }
1001
1002                 work = cmd_list;
1003                 while (work)
1004                         {
1005                         FileData *fd;
1006                         gchar *text;
1007
1008                         fd = work->data;
1009                         work = work->next;
1010
1011                         text = g_strconcat(prefix, fd->path, NULL);
1012                         remote_client_send(rc, text);
1013                         g_free(text);
1014
1015                         sent = TRUE;
1016                         }
1017
1018                 if (path && !cmd_list && use_path)
1019                         {
1020                         gchar *text;
1021
1022                         text = g_strdup_printf("file:%s", path);
1023                         remote_client_send(rc, text);
1024                         g_free(text);
1025
1026                         sent = TRUE;
1027                         }
1028
1029                 work = collection_list;
1030                 while (work)
1031                         {
1032                         const gchar *name;
1033                         gchar *text;
1034
1035                         name = work->data;
1036                         work = work->next;
1037
1038                         text = g_strdup_printf("file:%s", name);
1039                         remote_client_send(rc, text);
1040                         g_free(text);
1041
1042                         sent = TRUE;
1043                         }
1044
1045                 if (!started && !sent)
1046                         {
1047                         remote_client_send(rc, "raise");
1048                         }
1049                 }
1050         else
1051                 {
1052                 print_term(_("Remote not available\n"));
1053                 }
1054
1055         _exit(0);
1056 }
1057
1058 RemoteConnection *remote_server_init(gchar *path, CollectionData *command_collection)
1059 {
1060         RemoteConnection *remote_connection = remote_server_open(path);
1061         RemoteData *remote_data = g_new(RemoteData, 1);
1062
1063         remote_data->command_collection = command_collection;
1064
1065         remote_server_subscribe(remote_connection, remote_cb, remote_data);
1066         return remote_connection;
1067 }
1068 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */