1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598
|
/**
* @file subscription.c common subscription handling
*
* Copyright (C) 2003-2015 Lars Windolf <lars.windolf@gmx.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "subscription.h"
#include <string.h>
#include "auth.h"
#include "common.h"
#include "conf.h"
#include "db.h"
#include "debug.h"
#include "favicon.h"
#include "feedlist.h"
#include "metadata.h"
#include "net.h"
#include "ui/auth_dialog.h"
#include "ui/itemview.h"
#include "ui/liferea_shell.h"
#include "ui/feed_list_node.h"
/* The allowed feed protocol prefixes (see http://25hoursaday.com/draft-obasanjo-feed-URI-scheme-02.html) */
#define FEED_PROTOCOL_PREFIX "feed://"
#define FEED_PROTOCOL_PREFIX2 "feed:"
subscriptionPtr
subscription_new (const gchar *source,
const gchar *filter,
updateOptionsPtr options)
{
subscriptionPtr subscription;
subscription = g_new0 (struct subscription, 1);
subscription->type = feed_get_subscription_type ();
subscription->updateOptions = options;
if (!subscription->updateOptions)
subscription->updateOptions = g_new0 (struct updateOptions, 1);
subscription->updateState = g_new0 (struct updateState, 1);
subscription->updateInterval = -1;
subscription->defaultInterval = -1;
if (source) {
gboolean feedPrefix = FALSE;
gchar *uri = g_strdup (source);
g_strstrip (uri); /* strip confusing whitespaces */
/* strip feed protocol prefix variant 1 */
if (uri == strstr (uri, FEED_PROTOCOL_PREFIX)) {
gchar *tmp = uri;
uri = g_strdup (uri + strlen (FEED_PROTOCOL_PREFIX));
g_free (tmp);
feedPrefix = TRUE;
}
/* strip feed protocol prefix variant 2 */
if (uri == strstr (uri, FEED_PROTOCOL_PREFIX2)) {
gchar *tmp = uri;
uri = g_strdup (uri + strlen (FEED_PROTOCOL_PREFIX2));
g_free (tmp);
feedPrefix = TRUE;
}
/* ensure protocol prefix (but only for feed:[//] URIs to avoid
breaking local file and command line subscriptions) */
if (feedPrefix && !strstr (uri, "://")) {
gchar *tmp = uri;
uri = g_strdup_printf ("http://%s", uri);
g_free (tmp);
}
subscription_set_source (subscription, uri);
g_free (uri);
}
if (filter)
subscription_set_filter (subscription, filter);
return subscription;
}
/* Checks whether updating a feed makes sense. */
static gboolean
subscription_can_be_updated (subscriptionPtr subscription)
{
if (subscription->updateJob) {
liferea_shell_set_status_bar (_("Subscription \"%s\" is already being updated!"), node_get_title (subscription->node));
return FALSE;
}
if (subscription->discontinued) {
liferea_shell_set_status_bar (_("The subscription \"%s\" was discontinued. Liferea won't update it anymore!"), node_get_title (subscription->node));
return FALSE;
}
if (!subscription_get_source (subscription)) {
g_warning ("Feed source is NULL! This should never happen - cannot update!");
return FALSE;
}
return TRUE;
}
void
subscription_reset_update_counter (subscriptionPtr subscription, GTimeVal *now)
{
if (!subscription)
return;
subscription->updateState->lastPoll.tv_sec = now->tv_sec;
debug1 (DEBUG_UPDATE, "Resetting last poll counter to %ld.", subscription->updateState->lastPoll.tv_sec);
}
static void
subscription_favicon_downloaded (gpointer user_data)
{
nodePtr node = (nodePtr)user_data;
node_load_icon (node);
feed_list_node_update (node->id);
}
void
subscription_update_favicon (subscriptionPtr subscription)
{
debug1 (DEBUG_UPDATE, "trying to download favicon.ico for \"%s\"", node_get_title (subscription->node));
liferea_shell_set_status_bar (_("Updating favicon for \"%s\""), node_get_title (subscription->node));
g_get_current_time (&subscription->updateState->lastFaviconPoll);
favicon_download (subscription,
node_get_base_url (subscription->node),
subscription_get_source (subscription),
subscription->updateOptions, // FIXME: correct?
subscription_favicon_downloaded,
(gpointer)subscription->node);
}
/**
* Updates the error status of the given subscription
*
* @param subscription the subscription
* @param httpstatus the new HTTP status code
* @param resultcode the update result code
* @param filterError filter error string (or NULL)
*/
static void
subscription_update_error_status (subscriptionPtr subscription,
gint httpstatus,
gint resultcode,
gchar *filterError)
{
gboolean errorFound = FALSE;
if (subscription->filterError)
g_free (subscription->filterError);
if (subscription->httpError)
g_free (subscription->httpError);
if (subscription->updateError)
g_free (subscription->updateError);
subscription->filterError = g_strdup (filterError);
subscription->updateError = NULL;
subscription->httpError = NULL;
subscription->httpErrorCode = httpstatus;
if (((httpstatus >= 200) && (httpstatus < 400)) && /* HTTP codes starting with 2 and 3 mean no error */
(NULL == subscription->filterError))
return;
if ((200 != httpstatus) || (resultcode != 0)) {
subscription->httpError = g_strdup (network_strerror (resultcode, httpstatus));
errorFound = TRUE;
}
/* if none of the above error descriptions matched... */
if (!errorFound)
subscription->updateError = g_strdup (_("There was a problem while reading this subscription. Please check the URL and console output."));
}
static void
subscription_process_update_result (const struct updateResult * const result, gpointer user_data, guint32 flags)
{
subscriptionPtr subscription = (subscriptionPtr)user_data;
nodePtr node = subscription->node;
gboolean processing = FALSE;
GTimeVal now;
/* 1. preprocessing */
g_assert (subscription->updateJob);
/* update the subscription URL on permanent redirects */
if ((301 == result->httpstatus) && result->source && !g_str_equal (result->source, subscription->updateJob->request->source)) {
debug2 (DEBUG_UPDATE, "The URL of \"%s\" has changed permanently and was updated with \"%s\"", node_get_title(node), result->source);
subscription_set_source (subscription, result->source);
liferea_shell_set_status_bar (_("The URL of \"%s\" has changed permanently and was updated"), node_get_title(node));
}
if (401 == result->httpstatus) { /* unauthorized */
auth_dialog_new (subscription, flags);
} else if (410 == result->httpstatus) { /* gone */
subscription->discontinued = TRUE;
node->available = TRUE;
liferea_shell_set_status_bar (_("\"%s\" is discontinued. Liferea won't updated it anymore!"), node_get_title (node));
} else if (304 == result->httpstatus) {
node->available = TRUE;
liferea_shell_set_status_bar (_("\"%s\" has not changed since last update"), node_get_title(node));
} else {
processing = TRUE;
}
subscription_update_error_status (subscription, result->httpstatus, result->returncode, result->filterErrors);
subscription->updateJob = NULL;
/* 2. call subscription type specific processing */
if (processing)
SUBSCRIPTION_TYPE (subscription)->process_update_result (subscription, result, flags);
/* 3. call favicon updating after subscription processing
to ensure we have valid baseUrl for feed nodes... */
g_get_current_time (&now);
if (favicon_update_needed (subscription->node->id, subscription->updateState, &now))
subscription_update_favicon (subscription);
/* 4. generic postprocessing */
update_state_set_lastmodified (subscription->updateState, update_state_get_lastmodified (result->updateState));
update_state_set_cookies (subscription->updateState, update_state_get_cookies (result->updateState));
update_state_set_etag (subscription->updateState, update_state_get_etag (result->updateState));
g_get_current_time (&subscription->updateState->lastPoll);
// FIXME: use new-items signal in itemview class
itemview_update_node_info (subscription->node);
itemview_update ();
db_subscription_update (subscription);
db_node_update (subscription->node);
if (processing && subscription->node->newCount > 0) {
feedlist_new_items (node->newCount);
feedlist_node_was_updated (node);
}
}
void
subscription_update (subscriptionPtr subscription, guint flags)
{
updateRequestPtr request;
GTimeVal now;
if (!subscription)
return;
if (subscription->updateJob)
return;
debug1 (DEBUG_UPDATE, "Scheduling %s to be updated", node_get_title (subscription->node));
if (subscription_can_be_updated (subscription)) {
liferea_shell_set_status_bar (_("Updating \"%s\""), node_get_title (subscription->node));
g_get_current_time (&now);
subscription_reset_update_counter (subscription, &now);
request = update_request_new ();
request->updateState = update_state_copy (subscription->updateState);
request->options = update_options_copy (subscription->updateOptions);
request->source = g_strdup (subscription_get_source (subscription));
if (subscription_get_filter (subscription))
request->filtercmd = g_strdup (subscription_get_filter (subscription));
if (SUBSCRIPTION_TYPE (subscription)->prepare_update_request (subscription, request))
subscription->updateJob = update_execute_request (subscription, request, subscription_process_update_result, subscription, flags);
else
update_request_free (request);
}
}
void
subscription_auto_update (subscriptionPtr subscription)
{
gint interval;
guint flags = 0;
GTimeVal now;
if (!subscription)
return;
interval = subscription_get_update_interval (subscription);
if (-1 == interval)
conf_get_int_value (DEFAULT_UPDATE_INTERVAL, &interval);
if (-2 >= interval || 0 == interval)
return; /* don't update this subscription */
g_get_current_time (&now);
if (subscription->updateState->lastPoll.tv_sec + interval*60 <= now.tv_sec)
subscription_update (subscription, flags);
}
void
subscription_cancel_update (subscriptionPtr subscription)
{
if (!subscription->updateJob)
return;
update_job_cancel_by_owner (subscription);
subscription->updateJob = NULL;
}
gint
subscription_get_update_interval (subscriptionPtr subscription)
{
return subscription->updateInterval;
}
void
subscription_set_update_interval (subscriptionPtr subscription, gint interval)
{
if (0 == interval) {
interval = -1; /* This is evil, I know, but when this method
is called to set the update interval to 0
we mean "never updating". The updating logic
expects -1 for "never updating" and 0 for
updating according to the global update
interval... */
}
subscription->updateInterval = interval;
feedlist_schedule_save ();
}
guint
subscription_get_default_update_interval (subscriptionPtr subscription)
{
return subscription->defaultInterval;
}
void
subscription_set_default_update_interval (subscriptionPtr subscription, guint interval)
{
subscription->defaultInterval = interval;
}
static const gchar *
subscription_get_orig_source (subscriptionPtr subscription)
{
return subscription->origSource;
}
const gchar *
subscription_get_source (subscriptionPtr subscription)
{
return subscription->source;
}
const gchar *
subscription_get_homepage (subscriptionPtr subscription)
{
return metadata_list_get (subscription->metadata, "homepage");
}
const gchar *
subscription_get_filter (subscriptionPtr subscription)
{
return subscription->filtercmd;
}
static void
subscription_set_orig_source (subscriptionPtr subscription, const gchar *source)
{
g_free (subscription->origSource);
subscription->origSource = g_strchomp (g_strdup (source));
feedlist_schedule_save ();
}
void
subscription_set_source (subscriptionPtr subscription, const gchar *source)
{
g_free (subscription->source);
subscription->source = g_strchomp (g_strdup (source));
feedlist_schedule_save ();
update_state_set_cookies (subscription->updateState, NULL);
if (NULL == subscription_get_orig_source (subscription))
subscription_set_orig_source (subscription, source);
}
void
subscription_set_homepage (subscriptionPtr subscription, const gchar *newHtmlUrl)
{
gchar *htmlUrl = NULL;
if (newHtmlUrl) {
if (strstr (newHtmlUrl, "://")) {
/* absolute URI can be used directly */
htmlUrl = g_strchomp (g_strdup (newHtmlUrl));
} else {
/* relative URI part needs to be expanded */
gchar *tmp, *source;
source = g_strdup (subscription_get_source (subscription));
tmp = strrchr (source, '/');
if (tmp)
*(tmp+1) = '\0';
htmlUrl = common_build_url (newHtmlUrl, source);
g_free (source);
}
metadata_list_set (&subscription->metadata, "homepage", htmlUrl);
g_free (htmlUrl);
}
}
void
subscription_set_filter (subscriptionPtr subscription, const gchar *filter)
{
g_free (subscription->filtercmd);
subscription->filtercmd = g_strdup (filter);
feedlist_schedule_save ();
}
void
subscription_set_auth_info (subscriptionPtr subscription,
const gchar *username,
const gchar *password)
{
g_assert (NULL != subscription->updateOptions);
g_free (subscription->updateOptions->username);
g_free (subscription->updateOptions->password);
subscription->updateOptions->username = g_strdup (username);
subscription->updateOptions->password = g_strdup (password);
liferea_auth_info_store (subscription);
}
subscriptionPtr
subscription_import (xmlNodePtr xml, gboolean trusted)
{
subscriptionPtr subscription;
xmlChar *source, *homepage, *filter, *intervalStr, *tmp;
subscription = subscription_new (NULL, NULL, NULL);
source = xmlGetProp (xml, BAD_CAST "xmlUrl");
if (!source)
source = xmlGetProp (xml, BAD_CAST "xmlurl"); /* e.g. for AmphetaDesk */
if (source) {
if (!trusted && source[0] == '|') {
/* FIXME: Display warning dialog asking if the command
is safe? */
tmp = g_strdup_printf ("unsafe command: %s", source);
xmlFree (source);
source = tmp;
}
subscription_set_source (subscription, source);
xmlFree (source);
homepage = xmlGetProp (xml, BAD_CAST "htmlUrl");
if (homepage && xmlStrcmp (homepage, ""))
subscription_set_homepage (subscription, homepage);
xmlFree (homepage);
if ((filter = xmlGetProp (xml, BAD_CAST "filtercmd"))) {
if (!trusted) {
/* FIXME: Display warning dialog asking if the command
is safe? */
tmp = g_strdup_printf ("unsafe command: %s", filter);
xmlFree (filter);
filter = tmp;
}
subscription_set_filter (subscription, filter);
xmlFree (filter);
}
intervalStr = xmlGetProp (xml, BAD_CAST "updateInterval");
subscription_set_update_interval (subscription, common_parse_long (intervalStr, -1));
xmlFree (intervalStr);
/* no proxy flag */
tmp = xmlGetProp (xml, BAD_CAST "dontUseProxy");
if (tmp && !xmlStrcmp (tmp, BAD_CAST "true"))
subscription->updateOptions->dontUseProxy = TRUE;
xmlFree (tmp);
/* authentication options */
subscription->updateOptions->username = xmlGetProp (xml, BAD_CAST "username");
subscription->updateOptions->password = xmlGetProp (xml, BAD_CAST "password");
}
return subscription;
}
void
subscription_export (subscriptionPtr subscription, xmlNodePtr xml, gboolean trusted)
{
gchar *interval = g_strdup_printf ("%d", subscription_get_update_interval (subscription));
xmlNewProp (xml, BAD_CAST "xmlUrl", BAD_CAST subscription_get_source (subscription));
if (subscription_get_homepage (subscription))
xmlNewProp (xml, BAD_CAST"htmlUrl", BAD_CAST subscription_get_homepage (subscription));
else
xmlNewProp (xml, BAD_CAST"htmlUrl", BAD_CAST "");
if (subscription_get_filter (subscription))
xmlNewProp (xml, BAD_CAST"filtercmd", BAD_CAST subscription_get_filter (subscription));
if(trusted) {
xmlNewProp (xml, BAD_CAST"updateInterval", BAD_CAST interval);
if (subscription->updateOptions->dontUseProxy)
xmlNewProp (xml, BAD_CAST"dontUseProxy", BAD_CAST"true");
if (!liferea_auth_has_active_store ()) {
if (subscription->updateOptions->username)
xmlNewProp (xml, BAD_CAST"username", subscription->updateOptions->username);
if (subscription->updateOptions->password)
xmlNewProp (xml, BAD_CAST"password", subscription->updateOptions->password);
}
}
g_free (interval);
}
void
subscription_to_xml (subscriptionPtr subscription, xmlNodePtr xml)
{
gchar *tmp;
xmlNewTextChild (xml, NULL, "feedSource", subscription_get_source (subscription));
xmlNewTextChild (xml, NULL, "feedOrigSource", subscription_get_orig_source (subscription));
tmp = g_strdup_printf ("%d", subscription_get_default_update_interval (subscription));
xmlNewTextChild (xml, NULL, "feedUpdateInterval", tmp);
g_free (tmp);
tmp = g_strdup_printf ("%d", subscription->discontinued?1:0);
xmlNewTextChild (xml, NULL, "feedDiscontinued", tmp);
g_free (tmp);
if (subscription->updateError)
xmlNewTextChild (xml, NULL, "updateError", subscription->updateError);
if (subscription->httpError) {
xmlNewTextChild (xml, NULL, "httpError", subscription->httpError);
tmp = g_strdup_printf ("%d", subscription->httpErrorCode);
xmlNewTextChild (xml, NULL, "httpErrorCode", tmp);
g_free (tmp);
}
if (subscription->filterError)
xmlNewTextChild (xml, NULL, "filterError", subscription->filterError);
metadata_add_xml_nodes (subscription->metadata, xml);
}
void
subscription_free (subscriptionPtr subscription)
{
if (!subscription)
return;
g_free (subscription->updateError);
g_free (subscription->filterError);
g_free (subscription->httpError);
g_free (subscription->source);
g_free (subscription->origSource);
g_free (subscription->filtercmd);
update_job_cancel_by_owner (subscription);
update_options_free (subscription->updateOptions);
update_state_free (subscription->updateState);
metadata_list_free (subscription->metadata);
g_free (subscription);
}
|