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 *
init_document_refresh(unsigned char * url,unsigned long seconds)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
kill_document_refresh(struct document_refresh * refresh)49 kill_document_refresh(struct document_refresh *refresh)
50 {
51 kill_timer(&refresh->timer);
52 }
53
54 void
done_document_refresh(struct document_refresh * refresh)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
do_document_refresh(void * data)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
start_document_refresh(struct document_refresh * refresh,struct session * ses)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 }
118