1 1fce2e75 2021-08-14 op /*
  2 1fce2e75 2021-08-14 op  * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
  3 1fce2e75 2021-08-14 op  *
  4 1fce2e75 2021-08-14 op  * Permission to use, copy, modify, and distribute this software for any
  5 1fce2e75 2021-08-14 op  * purpose with or without fee is hereby granted, provided that the above
  6 1fce2e75 2021-08-14 op  * copyright notice and this permission notice appear in all copies.
  7 1fce2e75 2021-08-14 op  *
  8 1fce2e75 2021-08-14 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 1fce2e75 2021-08-14 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 1fce2e75 2021-08-14 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 1fce2e75 2021-08-14 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 1fce2e75 2021-08-14 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 1fce2e75 2021-08-14 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 1fce2e75 2021-08-14 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 1fce2e75 2021-08-14 op  */
 16 1fce2e75 2021-08-14 op 
 17 1fce2e75 2021-08-14 op #include "compat.h"
 18 1fce2e75 2021-08-14 op 
 19 1fce2e75 2021-08-14 op #include <errno.h>
 20 1fce2e75 2021-08-14 op #include <stdio.h>
 21 1fce2e75 2021-08-14 op #include <stdlib.h>
 22 1fce2e75 2021-08-14 op #include <string.h>
 23 1fce2e75 2021-08-14 op #include <unistd.h>
 24 1fce2e75 2021-08-14 op 
 25 1fce2e75 2021-08-14 op #include "defaults.h"
 26 1fce2e75 2021-08-14 op #include "minibuffer.h"
 27 1fce2e75 2021-08-14 op #include "parser.h"
 28 1fce2e75 2021-08-14 op #include "session.h"
 29 1fce2e75 2021-08-14 op #include "ui.h"
 30 1fce2e75 2021-08-14 op 
 31 1fce2e75 2021-08-14 op static struct event	 autosaveev;
 32 1fce2e75 2021-08-14 op 
 33 1fce2e75 2021-08-14 op void
 34 1fce2e75 2021-08-14 op switch_to_tab(struct tab *tab)
 35 1fce2e75 2021-08-14 op {
 36 1fce2e75 2021-08-14 op 	current_tab = tab;
 37 1fce2e75 2021-08-14 op 	tab->flags &= ~TAB_URGENT;
 38 1fce2e75 2021-08-14 op 
 39 1fce2e75 2021-08-14 op 	if (operating && tab->flags & TAB_LAZY)
 40 1fce2e75 2021-08-14 op 		load_url_in_tab(tab, tab->hist_cur->h, NULL, 0);
 41 1fce2e75 2021-08-14 op }
 42 1fce2e75 2021-08-14 op 
 43 1fce2e75 2021-08-14 op unsigned int
 44 1fce2e75 2021-08-14 op tab_new_id(void)
 45 1fce2e75 2021-08-14 op {
 46 1fce2e75 2021-08-14 op 	static uint32_t tab_counter;
 47 1fce2e75 2021-08-14 op 
 48 1fce2e75 2021-08-14 op 	return tab_counter++;
 49 1fce2e75 2021-08-14 op }
 50 1fce2e75 2021-08-14 op 
 51 1fce2e75 2021-08-14 op struct tab *
 52 1fce2e75 2021-08-14 op new_tab(const char *url, const char *base, struct tab *after)
 53 1fce2e75 2021-08-14 op {
 54 1fce2e75 2021-08-14 op 	struct tab	*tab;
 55 1fce2e75 2021-08-14 op 
 56 87aeb47b 2021-08-18 op 	ui_schedule_redraw();
 57 1fce2e75 2021-08-14 op 	autosave_hook();
 58 1fce2e75 2021-08-14 op 
 59 1fce2e75 2021-08-14 op 	if ((tab = calloc(1, sizeof(*tab))) == NULL) {
 60 1fce2e75 2021-08-14 op 		event_loopbreak();
 61 1fce2e75 2021-08-14 op 		return NULL;
 62 1fce2e75 2021-08-14 op 	}
 63 1fce2e75 2021-08-14 op 	tab->fd = -1;
 64 1fce2e75 2021-08-14 op 
 65 1fce2e75 2021-08-14 op 	TAILQ_INIT(&tab->hist.head);
 66 1fce2e75 2021-08-14 op 
 67 1fce2e75 2021-08-14 op 	TAILQ_INIT(&tab->buffer.head);
 68 1fce2e75 2021-08-14 op 	TAILQ_INIT(&tab->buffer.page.head);
 69 1fce2e75 2021-08-14 op 
 70 1fce2e75 2021-08-14 op 	tab->id = tab_new_id();
 71 1fce2e75 2021-08-14 op 	if (!operating)
 72 1fce2e75 2021-08-14 op 		tab->flags |= TAB_LAZY;
 73 1fce2e75 2021-08-14 op 	switch_to_tab(tab);
 74 1fce2e75 2021-08-14 op 
 75 1fce2e75 2021-08-14 op 	if (after != NULL)
 76 1fce2e75 2021-08-14 op 		TAILQ_INSERT_AFTER(&tabshead, after, tab, tabs);
 77 1fce2e75 2021-08-14 op 	else
 78 1fce2e75 2021-08-14 op 		TAILQ_INSERT_TAIL(&tabshead, tab, tabs);
 79 1fce2e75 2021-08-14 op 
 80 1fce2e75 2021-08-14 op 	load_url_in_tab(tab, url, base, 0);
 81 1fce2e75 2021-08-14 op 	return tab;
 82 1fce2e75 2021-08-14 op }
 83 1fce2e75 2021-08-14 op 
 84 1fce2e75 2021-08-14 op /*
 85 1fce2e75 2021-08-14 op  * Free every resource linked to the tab, including the tab itself.
 86 1fce2e75 2021-08-14 op  * Removes the tab from the tablist, but doesn't update the
 87 1fce2e75 2021-08-14 op  * current_tab though.
 88 1fce2e75 2021-08-14 op  */
 89 1fce2e75 2021-08-14 op void
 90 1fce2e75 2021-08-14 op free_tab(struct tab *tab)
 91 1fce2e75 2021-08-14 op {
 92 1fce2e75 2021-08-14 op 	stop_tab(tab);
 93 87aeb47b 2021-08-18 op 	ui_schedule_redraw();
 94 1fce2e75 2021-08-14 op 	autosave_hook();
 95 1fce2e75 2021-08-14 op 
 96 1fce2e75 2021-08-14 op 	if (evtimer_pending(&tab->loadingev, NULL))
 97 1fce2e75 2021-08-14 op 		evtimer_del(&tab->loadingev);
 98 1fce2e75 2021-08-14 op 
 99 1fce2e75 2021-08-14 op 	TAILQ_REMOVE(&tabshead, tab, tabs);
100 1fce2e75 2021-08-14 op 	free(tab);
101 1fce2e75 2021-08-14 op }
102 1fce2e75 2021-08-14 op 
103 1fce2e75 2021-08-14 op void
104 1fce2e75 2021-08-14 op stop_tab(struct tab *tab)
105 1fce2e75 2021-08-14 op {
106 1fce2e75 2021-08-14 op 	ui_send_net(IMSG_STOP, tab->id, NULL, 0);
107 1fce2e75 2021-08-14 op 
108 1fce2e75 2021-08-14 op 	if (tab->fd != -1) {
109 1fce2e75 2021-08-14 op 		close(tab->fd);
110 1fce2e75 2021-08-14 op 		tab->fd = -1;
111 1fce2e75 2021-08-14 op 		free(tab->path);
112 1fce2e75 2021-08-14 op 		tab->path = NULL;
113 1fce2e75 2021-08-14 op 		load_page_from_str(tab, "Stopped.\n");
114 1fce2e75 2021-08-14 op 	}
115 1fce2e75 2021-08-14 op }
116 1fce2e75 2021-08-14 op 
117 1fce2e75 2021-08-14 op 
118 1fce2e75 2021-08-14 op void
119 1fce2e75 2021-08-14 op save_session(void)
120 1fce2e75 2021-08-14 op {
121 1fce2e75 2021-08-14 op 	struct tab	*tab;
122 1fce2e75 2021-08-14 op 	char		*t;
123 1fce2e75 2021-08-14 op 	int		 flags;
124 1fce2e75 2021-08-14 op 
125 1fce2e75 2021-08-14 op 	ui_send_fs(IMSG_SESSION_START, 0, NULL, 0);
126 1fce2e75 2021-08-14 op 
127 1fce2e75 2021-08-14 op 	TAILQ_FOREACH(tab, &tabshead, tabs) {
128 1fce2e75 2021-08-14 op 		flags = tab->flags;
129 1fce2e75 2021-08-14 op 		if (tab == current_tab)
130 1fce2e75 2021-08-14 op 			flags |= TAB_CURRENT;
131 1fce2e75 2021-08-14 op 
132 1fce2e75 2021-08-14 op 		t = tab->hist_cur->h;
133 1fce2e75 2021-08-14 op 		ui_send_fs(IMSG_SESSION_TAB, flags, t, strlen(t)+1);
134 1fce2e75 2021-08-14 op 
135 1fce2e75 2021-08-14 op 		t = tab->buffer.page.title;
136 1fce2e75 2021-08-14 op 		ui_send_fs(IMSG_SESSION_TAB_TITLE, 0, t, strlen(t)+1);
137 1fce2e75 2021-08-14 op 	}
138 1fce2e75 2021-08-14 op 
139 1fce2e75 2021-08-14 op 	ui_send_fs(IMSG_SESSION_END, 0, NULL, 0);
140 1fce2e75 2021-08-14 op }
141 1fce2e75 2021-08-14 op 
142 1fce2e75 2021-08-14 op /*
143 1fce2e75 2021-08-14 op  * Parse a line of the session file.  The format is:
144 1fce2e75 2021-08-14 op  *
145 1fce2e75 2021-08-14 op  *	URL [flags,...] [title]\n
146 1fce2e75 2021-08-14 op  */
147 1fce2e75 2021-08-14 op static void
148 1fce2e75 2021-08-14 op parse_session_line(char *line, const char **title, uint32_t *flags)
149 1fce2e75 2021-08-14 op {
150 1fce2e75 2021-08-14 op 	char *s, *t, *ap;
151 1fce2e75 2021-08-14 op 
152 1fce2e75 2021-08-14 op 	*title = "";
153 1fce2e75 2021-08-14 op 	*flags = 0;
154 1fce2e75 2021-08-14 op 	if ((s = strchr(line, ' ')) == NULL)
155 1fce2e75 2021-08-14 op 		return;
156 1fce2e75 2021-08-14 op 
157 1fce2e75 2021-08-14 op 	*s++ = '\0';
158 1fce2e75 2021-08-14 op 
159 1fce2e75 2021-08-14 op         if ((t = strchr(s, ' ')) != NULL) {
160 1fce2e75 2021-08-14 op 		*t++ = '\0';
161 1fce2e75 2021-08-14 op 		*title = t;
162 1fce2e75 2021-08-14 op 	}
163 1fce2e75 2021-08-14 op 
164 1fce2e75 2021-08-14 op 	while ((ap = strsep(&s, ",")) != NULL) {
165 1fce2e75 2021-08-14 op 		if (*ap == '\0')
166 1fce2e75 2021-08-14 op 			;
167 1fce2e75 2021-08-14 op 		else if (!strcmp(ap, "current"))
168 1fce2e75 2021-08-14 op 			*flags |= TAB_CURRENT;
169 1fce2e75 2021-08-14 op 		else
170 1fce2e75 2021-08-14 op 			message("unknown tab flag: %s", ap);
171 1fce2e75 2021-08-14 op 	}
172 1fce2e75 2021-08-14 op }
173 1fce2e75 2021-08-14 op 
174 1fce2e75 2021-08-14 op void
175 1fce2e75 2021-08-14 op load_last_session(void)
176 1fce2e75 2021-08-14 op {
177 1fce2e75 2021-08-14 op 	const char	*title;
178 1fce2e75 2021-08-14 op 	char		*nl, *line = NULL;
179 1fce2e75 2021-08-14 op 	uint32_t	 flags;
180 1fce2e75 2021-08-14 op 	size_t		 linesize = 0;
181 1fce2e75 2021-08-14 op 	ssize_t		 linelen;
182 1fce2e75 2021-08-14 op 	FILE		*session;
183 1fce2e75 2021-08-14 op 	struct tab	*tab, *curr = NULL;
184 1fce2e75 2021-08-14 op 
185 1fce2e75 2021-08-14 op 	if ((session = fopen(session_file, "r")) == NULL) {
186 1fce2e75 2021-08-14 op 		/* first time? */
187 1fce2e75 2021-08-14 op 		new_tab("about:new", NULL, NULL);
188 1fce2e75 2021-08-14 op 		switch_to_tab(new_tab("about:help", NULL, NULL));
189 1fce2e75 2021-08-14 op 		return;
190 1fce2e75 2021-08-14 op 	}
191 1fce2e75 2021-08-14 op 
192 1fce2e75 2021-08-14 op 	while ((linelen = getline(&line, &linesize, session)) != -1) {
193 1fce2e75 2021-08-14 op                 if ((nl = strchr(line, '\n')) != NULL)
194 1fce2e75 2021-08-14 op 			*nl = '\0';
195 1fce2e75 2021-08-14 op 		parse_session_line(line, &title, &flags);
196 1fce2e75 2021-08-14 op 		if ((tab = new_tab(line, NULL, NULL)) == NULL)
197 1fce2e75 2021-08-14 op 			err(1, "new_tab");
198 1fce2e75 2021-08-14 op                 strlcpy(tab->buffer.page.title, title,
199 1fce2e75 2021-08-14 op 		    sizeof(tab->buffer.page.title));
200 1fce2e75 2021-08-14 op 		if (flags & TAB_CURRENT)
201 1fce2e75 2021-08-14 op 			curr = tab;
202 1fce2e75 2021-08-14 op 	}
203 1fce2e75 2021-08-14 op 
204 1fce2e75 2021-08-14 op 	if (ferror(session))
205 1fce2e75 2021-08-14 op 		message("error reading %s: %s",
206 1fce2e75 2021-08-14 op 		    session_file, strerror(errno));
207 1fce2e75 2021-08-14 op 	fclose(session);
208 1fce2e75 2021-08-14 op 	free(line);
209 1fce2e75 2021-08-14 op 
210 1fce2e75 2021-08-14 op 	if (curr != NULL)
211 1fce2e75 2021-08-14 op 		switch_to_tab(curr);
212 1fce2e75 2021-08-14 op 
213 1fce2e75 2021-08-14 op 	if (last_time_crashed())
214 1fce2e75 2021-08-14 op 		switch_to_tab(new_tab("about:crash", NULL, NULL));
215 1fce2e75 2021-08-14 op 
216 1fce2e75 2021-08-14 op 	return;
217 1fce2e75 2021-08-14 op }
218 1fce2e75 2021-08-14 op 
219 1fce2e75 2021-08-14 op void
220 1fce2e75 2021-08-14 op autosave_init(void)
221 1fce2e75 2021-08-14 op {
222 1fce2e75 2021-08-14 op 	evtimer_set(&autosaveev, autosave_timer, NULL);
223 1fce2e75 2021-08-14 op }
224 1fce2e75 2021-08-14 op 
225 1fce2e75 2021-08-14 op void
226 1fce2e75 2021-08-14 op autosave_timer(int fd, short event, void *data)
227 1fce2e75 2021-08-14 op {
228 1fce2e75 2021-08-14 op 	save_session();
229 1fce2e75 2021-08-14 op }
230 1fce2e75 2021-08-14 op 
231 1fce2e75 2021-08-14 op /*
232 1fce2e75 2021-08-14 op  * Function to be called in "interesting" places where we may want to
233 1fce2e75 2021-08-14 op  * schedule an autosave (like on new tab or before loading an url.)
234 1fce2e75 2021-08-14 op  */
235 1fce2e75 2021-08-14 op void
236 1fce2e75 2021-08-14 op autosave_hook(void)
237 1fce2e75 2021-08-14 op {
238 1fce2e75 2021-08-14 op 	struct timeval tv;
239 1fce2e75 2021-08-14 op 
240 1fce2e75 2021-08-14 op 	if (autosave <= 0)
241 1fce2e75 2021-08-14 op 		return;
242 1fce2e75 2021-08-14 op 
243 1fce2e75 2021-08-14 op 	if (!evtimer_pending(&autosaveev, NULL)) {
244 1fce2e75 2021-08-14 op 		tv.tv_sec = autosave;
245 1fce2e75 2021-08-14 op 		tv.tv_usec = 0;
246 1fce2e75 2021-08-14 op 
247 1fce2e75 2021-08-14 op 		evtimer_add(&autosaveev, &tv);
248 1fce2e75 2021-08-14 op 	}
249 1fce2e75 2021-08-14 op }