src/document/refresh.c

   1 /* Document (meta) refresh. */
   2
   3 #ifdef HAVE_CONFIG_H
   4 #include "config.h"
   5 #endif
   6
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include <string.h>
  10
  11 #include "elinks.h"
  12
  13 #include "config/options.h"
  14 #include "document/document.h"
  15 #include "document/refresh.h"
  16 #include "document/view.h"
  17 #include "main/timer.h"
  18 #include "protocol/uri.h"
  19 #include "session/download.h"
  20 #include "session/session.h"
  21 #include "session/task.h"
  22 #include "util/error.h"
  23 #include "util/memory.h"
  24 #include "util/string.h"
  25
  26
  27 struct document_refresh *
  28 init_document_refresh(unsigned char *url, unsigned long seconds)
  29 {
  30         struct document_refresh *refresh;
  31
  32         refresh = mem_alloc(sizeof(*refresh));
  33         if (!refresh) return NULL;
  34
  35         refresh->uri = get_uri(url, 0);
  36         if (!refresh->uri) {
  37                 mem_free(refresh);
  38                 return NULL;
  39         }
  40
  41         refresh->seconds = seconds;
  42         refresh->timer = TIMER_ID_UNDEF;
  43         refresh->restart = 1;
  44
  45         return refresh;
  46 }
  47
  48 void
  49 kill_document_refresh(struct document_refresh *refresh)
  50 {
  51         kill_timer(&refresh->timer);
  52 }
  53
  54 void
  55 done_document_refresh(struct document_refresh *refresh)
  56 {
  57         kill_document_refresh(refresh);
  58         done_uri(refresh->uri);
  59         mem_free(refresh);
  60 }
  61
  62 static void
  63 do_document_refresh(void *data)
  64 {
  65         struct session *ses = data;
  66         struct document_refresh *refresh = ses->doc_view->document->refresh;
  67         struct type_query *type_query;
  68
  69         assert(refresh);
  70
  71         refresh->timer = TIMER_ID_UNDEF;
  72
  73         /* When refreshing documents that will trigger a download (like
  74          * sourceforge's download pages) make sure that we do not endlessly
  75          * trigger the download (bug 289). */
  76         foreach (type_query, ses->type_queries)
  77                 if (compare_uri(refresh->uri, type_query->uri, URI_BASE))
  78                         return;
  79
  80         if (compare_uri(refresh->uri, ses->doc_view->document->uri, 0)) {
  81                 /* If the refreshing is for the current URI, force a reload. */
  82                 reload(ses, CACHE_MODE_FORCE_RELOAD);
  83         } else {
  84                 /* This makes sure that we send referer. */
  85                 goto_uri_frame(ses, refresh->uri, NULL, CACHE_MODE_NORMAL);
  86                 /* XXX: A possible very wrong work-around for refreshing used when
  87                  * downloading files. */
  88                 refresh->restart = 0;
  89         }
  90 }
  91
  92 void
  93 start_document_refresh(struct document_refresh *refresh, struct session *ses)
  94 {
  95         milliseconds_T minimum = (milliseconds_T) get_opt_int("document.browse.minimum_refresh_time");
  96         milliseconds_T refresh_delay = sec_to_ms(refresh->seconds);
  97         milliseconds_T time = ms_max(refresh_delay, minimum);
  98         struct type_query *type_query;
  99
 100         /* FIXME: This is just a work-around for stopping more than one timer
 101          * from being started at anytime. The refresh timer should maybe belong
 102          * to the session? The multiple refresh timers is triggered by
 103          * http://ttforums.owenrudge.net/login.php when pressing 'Log in' and
 104          * waiting for it to refresh. --jonas */
 105         if (!refresh->restart
 106             || refresh->timer != TIMER_ID_UNDEF)
 107                 return;
 108
 109         /* Like bug 289 another sourceforge download thingy this time with
 110          * number 434. It should take care when refreshing to the same URI or
 111          * what ever the cause is. */
 112         foreach (type_query, ses->type_queries)
 113                 if (compare_uri(refresh->uri, type_query->uri, URI_BASE))
 114                         return;
 115
 116         install_timer(&refresh->timer, time, do_document_refresh, ses);
 117 }