err.no Git - mapper/blob - src/map-download.c

   1 /*
   2  * This file is part of mapper
   3  *
   4  * Copyright (C) 2007 Kaj-Michael Lang
   5  * Copyright (C) 2006-2007 John Costigan.
   6  *
   7  * POI and GPS-Info code originally written by Cezary Jackiewicz.
   8  *
   9  * Default map data provided by http://www.openstreetmap.org/
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License along
  22  * with this program; if not, write to the Free Software Foundation, Inc.,
  23  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  24  */
  25
  26 #include "config.h"
  27
  28 #define _GNU_SOURCE
  29
  30 #include <unistd.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <strings.h>
  34 #include <stddef.h>
  35 #include <locale.h>
  36 #include <math.h>
  37 #include <errno.h>
  38 #include <sys/wait.h>
  39 #include <glib/gstdio.h>
  40 #include <fcntl.h>
  41 #include <curl/multi.h>
  42 #include <libintl.h>
  43 #include <locale.h>
  44
  45 #include "hildon-mapper.h"
  46
  47 #include "utils.h"
  48 #include "map.h"
  49 #include "osm.h"
  50 #include "db.h"
  51 #include "osm-db.h"
  52 #include "poi.h"
  53 #include "route.h"
  54 #include "gps.h"
  55 #include "bt.h"
  56 #include "mapper-types.h"
  57 #include "ui-common.h"
  58 #include "settings.h"
  59 #include "latlon.h"
  60 #include "gpx.h"
  61 #include "map-download.h"
  62 #include "iap.h"
  63
  64 static guint _num_downloads=0;
  65 static guint _curr_download=0;
  66
  67 static gchar *map_construct_url(guint tilex, guint tiley, guint zoom);
  68
  69 static gboolean
  70 get_next_pui(gpointer key, gpointer value, ProgressUpdateInfo ** data)
  71 {
  72 *data = key;
  73 return TRUE;
  74 }
  75
  76 static gint
  77 download_comparefunc(const ProgressUpdateInfo * a, const ProgressUpdateInfo * b, gpointer user_data)
  78 {
  79 gint diff = (a->priority - b->priority);
  80 if (diff)
  81         return diff;
  82 diff = (a->tilex - b->tilex);
  83 if (diff)
  84         return diff;
  85 diff = (a->tiley - b->tiley);
  86 if (diff)
  87         return diff;
  88 diff = (a->zoom - b->zoom);
  89 if (diff)
  90         return diff;
  91 diff = (a->repo - b->repo);
  92 if (diff)
  93         return diff;
  94 /* Otherwise, deletes are "greatest" (least priority). */
  95 if (!a->retries)
  96         return (b->retries ? -1 : 0);
  97 else if (!b->retries)
  98         return (a->retries ? 1 : 0);
  99 /* Do updates after non-updates (because they'll both be done anyway). */
 100 return (a->retries - b->retries);
 101 }
 102
 103 /**
 104  * Free a ProgressUpdateInfo data structure that was allocated during the
 105  * auto-map-download process.
 106  */
 107 static void
 108 progress_update_info_free(ProgressUpdateInfo * pui)
 109 {
 110 g_free(pui->src_str);
 111 g_free(pui->dest_str);
 112 g_slice_free(ProgressUpdateInfo, pui);
 113 }
 114
 115 gboolean
 116 map_download_timeout()
 117 {
 118 static guint destroy_counter = 50;
 119 gint num_transfers = 0, num_msgs = 0;
 120 gint deletes_left = 50; /* only do 50 deletes at a time. */
 121 CURLMsg *msg;
 122
 123 if (_curl_multi && CURLM_CALL_MULTI_PERFORM == curl_multi_perform(_curl_multi, &num_transfers))
 124         return TRUE;    /* Give UI a chance first. */
 125
 126 while (_curl_multi && (msg = curl_multi_info_read(_curl_multi, &num_msgs))) {
 127         if (msg->msg == CURLMSG_DONE) {
 128                 if (msg->easy_handle == _autoroute_data.curl_easy) {
 129                         /* This is the autoroute download. */
 130                         /* Now, parse the autoroute and update the display. */
 131                         if (_autoroute_data.enabled && parse_gpx(&_route,
 132                                          _autoroute_data.rdl_data.bytes,
 133                                          _autoroute_data.rdl_data.bytes_read, 0)) {
 134                                 /* Find the nearest route point, if we're connected. */
 135                                 route_find_nearest_point();
 136                                 map_force_redraw();
 137                         }
 138                         cancel_autoroute(TRUE); /* We're done. Clean up. */
 139                 } else {
 140                         ProgressUpdateInfo *pui = g_hash_table_lookup(_pui_by_easy, msg->easy_handle);
 141                         g_queue_push_head(_curl_easy_queue, msg->easy_handle);
 142                         g_hash_table_remove(_pui_by_easy, msg->easy_handle);
 143                         fclose(pui->file);
 144                         if (msg->data.result != CURLE_OK)
 145                                 g_unlink(pui->dest_str);        /* Delete so we try again. */
 146                         curl_multi_remove_handle(_curl_multi, msg->easy_handle);
 147                         g_idle_add_full(G_PRIORITY_HIGH_IDLE, (GSourceFunc)map_download_idle_refresh, pui, NULL);
 148                 }
 149         }
 150 }
 151
 152 /* Up to 1 transfer per tile. */
 153 while (num_transfers < (BUF_WIDTH_TILES * BUF_HEIGHT_TILES) && g_tree_nnodes(_pui_tree)) {
 154         ProgressUpdateInfo *pui;
 155         g_tree_foreach(_pui_tree, (GTraverseFunc) get_next_pui, &pui);
 156
 157         if (pui->retries) {
 158                 /* This is a download. */
 159                 FILE *f;
 160                 g_tree_steal(_pui_tree, pui);
 161                 g_tree_insert(_downloading_tree, pui, pui);
 162
 163                 pui->src_str = map_construct_url(pui->tilex, pui->tiley, pui->zoom);
 164                 pui->dest_str = g_strdup_printf("%s/%u/%u/%u.jpg",
 165                                     pui->repo->cache_dir, pui->zoom,
 166                                     pui->tilex, pui->tiley);
 167
 168                 if (!pui->src_str) {
 169                         /* Failed to generate URL. */
 170                         g_idle_add_full(G_PRIORITY_HIGH_IDLE,(GSourceFunc)map_download_idle_refresh, pui, NULL);
 171                         continue;
 172                 }
 173
 174                 /* Check to see if we need to overwrite. */
 175                 if (pui->retries > 0) {
 176                         /* We're not updating - check if file already exists. */
 177                         if (g_file_test(pui->dest_str, G_FILE_TEST_EXISTS)) {
 178                                 g_idle_add_full(G_PRIORITY_HIGH_IDLE, (GSourceFunc)map_download_idle_refresh, pui, NULL);
 179                                 continue;
 180                         }
 181                 }
 182
 183                 /* Attempt to open the file for writing. */
 184                 if (!(f = g_fopen(pui->dest_str, "w")) && errno == ENOENT) {
 185                         /* Directory doesn't exist yet - create it, then we'll retry */
 186                         gchar buffer[BUFFER_SIZE];
 187                         g_snprintf(buffer, sizeof(buffer), "%s/%u/%u",
 188                                  pui->repo->cache_dir, pui->zoom, pui->tilex);
 189                         g_mkdir_with_parents(buffer, 0775);
 190                         f = g_fopen(pui->dest_str, "w");
 191                 }
 192
 193                 if (f) {
 194                         CURL *curl_easy;
 195                         pui->file = f;
 196                         curl_easy = g_queue_pop_tail(_curl_easy_queue);
 197                         if (!curl_easy) {
 198                                 /* Need a new curl_easy. */
 199                                 MACRO_CURL_EASY_INIT(curl_easy);
 200                         }
 201                         curl_easy_setopt(curl_easy, CURLOPT_URL, pui->src_str);
 202                         curl_easy_setopt(curl_easy, CURLOPT_WRITEDATA, f);
 203                         g_hash_table_insert(_pui_by_easy, curl_easy, pui);
 204                         if (!_curl_multi) {
 205                                 /* Initialize CURL. */
 206                                 _curl_multi = curl_multi_init();
 207                                 /*curl_multi_setopt(_curl_multi, CURLMOPT_PIPELINING, 1); */
 208                         }
 209                         curl_multi_add_handle(_curl_multi, curl_easy);
 210                         num_transfers++;
 211                 } else {
 212                         /* Unable to open tile file for writing. */
 213                         gchar buffer[BUFFER_SIZE];
 214                         g_snprintf(buffer, sizeof(buffer), "%s:\n%s",
 215                                  _("Failed to open file for writing"),
 216                                  pui->dest_str);
 217                         MACRO_BANNER_SHOW_INFO(_window, buffer);
 218                         g_idle_add_full(G_PRIORITY_HIGH_IDLE, (GSourceFunc)map_download_idle_refresh, pui, NULL);
 219                         continue;
 220                 }
 221         } else if (--deletes_left) {
 222                 /* This is a delete. */
 223                 gchar buffer[BUFFER_SIZE];
 224                 g_tree_steal(_pui_tree, pui);
 225                 g_tree_insert(_downloading_tree, pui, pui);
 226
 227                 g_snprintf(buffer, sizeof(buffer), "%s/%u/%u/%u.jpg",
 228                         pui->repo->cache_dir, pui->zoom,
 229                         pui->tilex,     pui->tiley);
 230                 g_unlink(buffer);
 231                 g_idle_add_full(G_PRIORITY_HIGH_IDLE,(GSourceFunc)map_download_idle_refresh, pui, NULL);
 232         } else
 233                 break;
 234 }
 235
 236 if (!(num_transfers || g_tree_nnodes(_pui_tree))) {
 237         /* Destroy curl after 50 counts (5 seconds). */
 238         if (--destroy_counter) {
 239                 /* Clean up curl. */
 240                 CURL *curr;
 241                 while ((curr = g_queue_pop_tail(_curl_easy_queue)))
 242                         curl_easy_cleanup(curr);
 243
 244                 curl_multi_cleanup(_curl_multi);
 245                 _curl_multi = NULL;
 246
 247                 _curl_sid = 0;
 248                 return FALSE;
 249         }
 250 } else
 251         destroy_counter = 50;
 252
 253 return TRUE;
 254 }
 255
 256 /**
 257  * Given a wms uri pattern, compute the coordinate transformation and
 258  * trimming.
 259  * 'proj' is used for the conversion
 260  */
 261 static gchar *
 262 map_convert_wms_to_wms(gint tilex, gint tiley, gint zoomlevel, gchar * uri)
 263 {
 264 gint system_retcode;
 265 gchar cmd[BUFFER_SIZE], srs[BUFFER_SIZE];
 266 gchar *ret = NULL;
 267 FILE *in;
 268 gdouble lon1, lat1, lon2, lat2;
 269
 270 gchar *widthstr = strcasestr(uri, "WIDTH=");
 271 gchar *heightstr = strcasestr(uri, "HEIGHT=");
 272 gchar *srsstr = strcasestr(uri, "SRS=EPSG");
 273 gchar *srsstre = strchr(srsstr, '&');
 274
 275 /* missing: test if found */
 276 strcpy(srs, "epsg");
 277 strncpy(srs + 4, srsstr + 8, 256);
 278 /* missing: test srsstre-srsstr < 526 */
 279 srs[srsstre - srsstr - 4] = 0;
 280 /* convert to lower, as WMC is EPSG and cs2cs is epsg */
 281
 282 gint dwidth = widthstr ? atoi(widthstr + 6) - TILE_SIZE_PIXELS : 0;
 283 gint dheight = heightstr ? atoi(heightstr + 7) - TILE_SIZE_PIXELS : 0;
 284
 285 unit2latlon(tile2zunit(tilex, zoomlevel) - pixel2zunit(dwidth / 2, zoomlevel),
 286             tile2zunit(tiley + 1, zoomlevel) + pixel2zunit((dheight + 1) / 2, zoomlevel), lat1, lon1);
 287
 288 unit2latlon(tile2zunit(tilex + 1, zoomlevel) + pixel2zunit((dwidth + 1) / 2, zoomlevel),
 289                 tile2zunit(tiley, zoomlevel) - pixel2zunit(dheight / 2, zoomlevel), lat2, lon2);
 290
 291 setlocale(LC_NUMERIC, "C");
 292
 293 g_snprintf(cmd, sizeof(cmd),
 294          "(echo \"%.6f %.6f\"; echo \"%.6f %.6f\") | "
 295          "/usr/bin/cs2cs +proj=longlat +datum=WGS84 +to +init=%s -f %%.6f "
 296          " > /tmp/tmpcs2cs ", lon1, lat1, lon2, lat2, srs);
 297 vprintf("Running command: %s\n", cmd);
 298 system_retcode = system(cmd);
 299
 300 if (system_retcode)
 301         g_printerr("cs2cs returned error code %d\n", WEXITSTATUS(system_retcode));
 302 else if (!(in = g_fopen("/tmp/tmpcs2cs", "r")))
 303         g_printerr("Cannot open results of conversion\n");
 304 else if (5 != fscanf(in, "%lf %lf %s %lf %lf", &lon1, &lat1, cmd, &lon2, &lat2)) {
 305         g_printerr("Wrong conversion\n");
 306         fclose(in);
 307 } else {
 308         fclose(in);
 309         ret = g_strdup_printf(uri, lon1, lat1, lon2, lat2);
 310 }
 311
 312 setlocale(LC_NUMERIC, "");
 313
 314 return ret;
 315 }
 316
 317
 318 /**
 319  * Given the xyz coordinates of our map coordinate system, write the qrst
 320  * quadtree coordinates to buffer.
 321  */
 322 static void
 323 map_convert_coords_to_quadtree_string(gint x, gint y, gint zoomlevel,
 324                                       gchar * buffer, const gchar initial,
 325                                       const gchar * const quadrant)
 326 {
 327 gchar *ptr = buffer;
 328 gint n;
 329
 330 if (initial)
 331         *ptr++ = initial;
 332
 333 for (n = 16 - zoomlevel; n >= 0; n--) {
 334         gint xbit = (x >> n) & 1;
 335         gint ybit = (y >> n) & 1;
 336         *ptr++ = quadrant[xbit + 2 * ybit];
 337 }
 338 *ptr++ = '\0';
 339 }
 340
 341 /**
 342  * Construct the URL that we should fetch, based on the current URI format.
 343  * This method works differently depending on if a "%s" string is present in
 344  * the URI format, since that would indicate a quadtree-based map coordinate
 345  * system.
 346  */
 347 static gchar *
 348 map_construct_url(guint tilex, guint tiley, guint zoom)
 349 {
 350 switch (_curr_repo->type) {
 351 case REPOTYPE_XYZ:
 352         return g_strdup_printf(_curr_repo->url, tilex, tiley, zoom);
 353
 354 case REPOTYPE_XYZ_INV:
 355         return g_strdup_printf(_curr_repo->url, 17 - zoom, tilex, tiley);
 356
 357 case REPOTYPE_QUAD_QRST:
 358         {
 359                 gchar location[MAX_ZOOM + 2];
 360                 map_convert_coords_to_quadtree_string(tilex, tiley, zoom, location, 't', "qrts");
 361                 return g_strdup_printf(_curr_repo->url, location);
 362         }
 363
 364 case REPOTYPE_QUAD_ZERO:
 365         {
 366                 /* This is a zero-based quadtree URI. */
 367                 gchar location[MAX_ZOOM + 2];
 368                 map_convert_coords_to_quadtree_string(tilex, tiley, zoom, location, '\0', "0123");
 369                 return g_strdup_printf(_curr_repo->url, location);
 370         }
 371
 372 case REPOTYPE_WMS:
 373         return map_convert_wms_to_wms(tilex, tiley, zoom, _curr_repo->url);
 374
 375 default:
 376         return NULL;
 377 }
 378 return "";
 379 }
 380
 381
 382 gboolean
 383 map_download_idle_refresh(ProgressUpdateInfo * pui)
 384 {
 385 /* Test if download succeeded (only if retries != 0). */
 386 if (!pui->retries || g_file_test(pui->dest_str, G_FILE_TEST_EXISTS)) {
 387         gint zoom_diff = pui->zoom - _zoom;
 388         /* Only refresh at same or "lower" (more detailed) zoom level. */
 389         if (zoom_diff >= 0) {
 390                 /* If zoom has changed since we first put in the request for
 391                  * this tile, then we may have to update more than one tile. */
 392                 guint tilex, tiley, tilex_end, tiley_end;
 393                 for (tilex = pui->tilex << zoom_diff, tilex_end = tilex + (1 << zoom_diff); tilex < tilex_end; tilex++) {
 394                         for (tiley = pui->tiley << zoom_diff, tiley_end = tiley + (1 << zoom_diff); tiley < tiley_end; tiley++) {
 395                                 if ((tilex - _base_tilex) < BUF_WIDTH_TILES && (tiley - _base_tiley) < BUF_HEIGHT_TILES) {
 396                                         map_render_tile(tilex, tiley, ((tilex - _base_tilex) << TILE_SIZE_P2), ((tiley - _base_tiley) << TILE_SIZE_P2), TRUE);
 397                                         map_render_data();
 398                                         gtk_widget_queue_draw_area
 399                                             (_map_widget,
 400                                              ((tilex - _base_tilex) << TILE_SIZE_P2) - _offsetx,
 401                                              ((tiley - _base_tiley) << TILE_SIZE_P2) - _offsety,
 402                                              TILE_SIZE_PIXELS, TILE_SIZE_PIXELS);
 403                                 }
 404                         }
 405                 }
 406         }
 407 }
 408 /* Else the download failed. Update retries and maybe try again. */
 409 else {
 410         if (pui->retries > 0)
 411                 --pui->retries;
 412         else if (pui->retries < 0)
 413                 ++pui->retries;
 414
 415         if (pui->retries) {
 416                 /* removal automatically calls progress_update_info_free(). */
 417                 g_tree_steal(_downloading_tree, pui);
 418                 g_tree_insert(_pui_tree, pui, pui);
 419                 if (iap_is_connected() && !_curl_sid)
 420                         _curl_sid = g_timeout_add(100,(GSourceFunc)map_download_timeout, NULL);
 421                 /* Don't do anything else. */
 422                 return FALSE;
 423         } else {
 424                 /* No more retries left - something must be wrong. */
 425                 MACRO_BANNER_SHOW_INFO(_window, _("Error in download. Check internet connection and/or Map Repository URL Format."));
 426         }
 427 }
 428
 429 /* removal automatically calls progress_update_info_free(). */
 430 g_tree_remove(_downloading_tree, pui);
 431
 432 if (++_curr_download == _num_downloads) {
 433         _num_downloads = _curr_download = 0;
 434         gtk_progress_bar_set_fraction(_progress_item, 0.0);
 435         gtk_progress_bar_set_text(_progress_item, "");
 436 } else {
 437         gchar buffer[64];
 438
 439         g_snprintf(buffer, sizeof(buffer), _("Downloading maps (%d/%d)"), _curr_download, _num_downloads);
 440         gtk_progress_bar_set_text(_progress_item, buffer);
 441         gtk_progress_bar_set_fraction(_progress_item, _curr_download / (double)_num_downloads);
 442 }
 443 return FALSE;
 444 }
 445
 446 /**
 447  * Initiate a download of the given xyz coordinates using the given buffer
 448  * as the URL.  If the map already exists on disk, or if we are already
 449  * downloading the map, then this method does nothing.
 450  */
 451 void
 452 map_initiate_download(guint tilex, guint tiley, guint zoom, gint retries)
 453 {
 454 ProgressUpdateInfo *pui;
 455
 456 iap_connect();
 457
 458 pui = g_slice_new(ProgressUpdateInfo);
 459 pui->tilex = tilex;
 460 pui->tiley = tiley;
 461 pui->zoom = zoom;
 462 pui->priority = (abs((gint) tilex - unit2tile(_center.unitx)) + abs((gint) tiley - unit2tile(_center.unity)));
 463 if (!retries)
 464         pui->priority = -pui->priority; /* "Negative" makes them lowest pri. */
 465 pui->retries = retries;
 466 pui->repo = _curr_repo;
 467
 468 if (g_tree_lookup(_pui_tree, pui) || g_tree_lookup(_downloading_tree, pui)) {
 469         /* Already downloading. */
 470         g_slice_free(ProgressUpdateInfo, pui);
 471         return;
 472 }
 473 pui->src_str = NULL;
 474 pui->dest_str = NULL;
 475 pui->file = NULL;
 476
 477 g_tree_insert(_pui_tree, pui, pui);
 478 if (iap_is_connected() && !_curl_sid)
 479         _curl_sid = g_timeout_add(100, (GSourceFunc) map_download_timeout, NULL);
 480
 481 if (!_num_downloads++)
 482         gtk_progress_bar_set_text(_progress_item, _("Downloading maps..."));
 483 }
 484
 485 void
 486 map_download_init(void)
 487 {
 488 _curl_easy_queue = g_queue_new();
 489 _pui_tree = g_tree_new_full((GCompareDataFunc) download_comparefunc, NULL, (GDestroyNotify) progress_update_info_free, NULL);
 490 _downloading_tree = g_tree_new_full((GCompareDataFunc) download_comparefunc, NULL, (GDestroyNotify) progress_update_info_free, NULL);
 491 _pui_by_easy = g_hash_table_new(g_direct_hash, g_direct_equal);
 492 }
 493
 494 void
 495 map_download_deinit(void)
 496 {
 497 /* Clean up CURL. */
 498 if (_curl_multi) {
 499         CURL *curr;
 500         CURLMsg *msg;
 501         gint num_transfers, num_msgs;
 502
 503         /* First, remove all downloads from _pui_tree. */
 504         g_tree_destroy(_pui_tree);
 505
 506         /* Finish up all downloads. */
 507         while (CURLM_CALL_MULTI_PERFORM == curl_multi_perform(_curl_multi, &num_transfers) || num_transfers) {
 508                 /* XXX: should inform the user why it's taking so damn long... */
 509         }
 510
 511         /* Close all finished files. */
 512         while ((msg = curl_multi_info_read(_curl_multi, &num_msgs))) {
 513                 if (msg->msg == CURLMSG_DONE) {
 514                         /* This is a map download. */
 515                         ProgressUpdateInfo *pui = g_hash_table_lookup(_pui_by_easy, msg->easy_handle);
 516                         g_queue_push_head(_curl_easy_queue, msg->easy_handle);
 517                         g_hash_table_remove(_pui_by_easy, msg->easy_handle);
 518                         fclose(pui->file);
 519                         curl_multi_remove_handle(_curl_multi, msg->easy_handle);
 520                 }
 521         }
 522
 523         while ((curr = g_queue_pop_tail(_curl_easy_queue)))
 524                 curl_easy_cleanup(curr);
 525
 526         curl_multi_cleanup(_curl_multi);
 527         _curl_multi = NULL;
 528
 529         g_queue_free(_curl_easy_queue);
 530         g_tree_destroy(_downloading_tree);
 531         g_hash_table_destroy(_pui_by_easy);
 532 }
 533
 534 }