2 * main.c -- config file parsing and main loop for browser-switchboard
4 * Copyright (C) 2009 Steven Luo
5 * Derived from a Python implementation by Jason Simpson and Steven Luo
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
28 #include <sys/types.h>
31 #include <dbus/dbus-glib.h>
33 #include "browser-switchboard.h"
35 #include "dbus-server-bindings.h"
36 #include "configfile.h"
38 struct swb_context ctx;
40 static void set_config_defaults(struct swb_context *ctx) {
43 free(ctx->other_browser_cmd);
44 ctx->continuous_mode = 0;
45 ctx->default_browser_launcher = NULL;
46 ctx->other_browser_cmd = NULL;
49 static void waitforzombies(int signalnum) {
50 while (waitpid(-1, NULL, WNOHANG) > 0)
51 printf("Waited for a zombie\n");
54 static void read_config(int signalnum) {
56 regex_t re_ignore, re_config1, re_config2;
57 regmatch_t substrs[3];
60 char *default_browser = NULL;
63 set_config_defaults(&ctx);
65 if (!(fp = open_config_file()))
68 /* compile regex matching blank lines or comments */
69 if (regcomp(&re_ignore, REGEX_IGNORE, REGEX_IGNORE_FLAGS))
71 /* compile regex matching foo = "bar", with arbitrary whitespace at
72 beginning and end of line and surrounding the = */
73 if (regcomp(&re_config1, REGEX_CONFIG1, REGEX_CONFIG1_FLAGS)) {
77 /* compile regex matching foo = bar, with arbitrary whitespace at
78 beginning of line and surrounding the = */
79 if (regcomp(&re_config2, REGEX_CONFIG2, REGEX_CONFIG2_FLAGS)) {
85 /* Read in the config file one line at a time and parse it
86 XXX doesn't deal with lines longer than MAXLINE */
87 while (fgets(buf, MAXLINE, fp)) {
88 /* skip blank lines and comments */
89 if (!regexec(&re_ignore, buf, 0, NULL, 0))
92 /* Find the substrings corresponding to the key and value
93 If the line doesn't match our idea of a config file entry,
95 if (regexec(&re_config1, buf, 3, substrs, 0) &&
96 regexec(&re_config2, buf, 3, substrs, 0))
98 if (substrs[1].rm_so == -1 || substrs[2].rm_so == -1)
101 /* copy the config value into a new string */
102 len = substrs[2].rm_eo - substrs[2].rm_so;
103 if (!(value = calloc(len+1, sizeof(char))))
105 strncpy(value, buf+substrs[2].rm_so, len);
106 /* calloc() zeroes the memory, so string is automatically
109 /* make key point to a null-terminated string holding the
111 key = buf + substrs[1].rm_so;
112 buf[substrs[1].rm_eo] = '\0';
114 if (!strcmp(key, "continuous_mode")) {
115 ctx.continuous_mode = atoi(value);
117 } else if (!strcmp(key, "default_browser")) {
118 if (!default_browser)
119 default_browser = value;
120 } else if (!strcmp(key, "other_browser_cmd")) {
121 if (!ctx.other_browser_cmd)
122 ctx.other_browser_cmd = value;
124 /* Don't need this line's contents */
130 printf("continuous_mode: %d\n", ctx.continuous_mode);
131 printf("default_browser: '%s'\n", default_browser?default_browser:"NULL");
132 printf("other_browser_cmd: '%s'\n", ctx.other_browser_cmd?ctx.other_browser_cmd:"NULL");
136 regfree(&re_config1);
137 regfree(&re_config2);
141 update_default_browser(&ctx, default_browser);
142 free(default_browser);
147 OssoBrowser *obj_osso_browser, *obj_osso_browser_req;
149 GError *error = NULL;
153 if (ctx.continuous_mode) {
154 /* Install signal handlers */
155 struct sigaction act;
156 act.sa_flags = SA_RESTART;
157 sigemptyset(&(act.sa_mask));
159 /* SIGCHLD -- clean up after zombies */
160 act.sa_handler = waitforzombies;
161 if (sigaction(SIGCHLD, &act, NULL) == -1) {
162 printf("Installing signal handler failed\n");
166 /* SIGHUP -- reread config file */
167 act.sa_handler = read_config;
168 if (sigaction(SIGHUP, &act, NULL) == -1) {
169 printf("Installing signal handler failed\n");
176 dbus_g_object_type_install_info(OSSO_BROWSER_TYPE,
177 &dbus_glib_osso_browser_object_info);
179 /* Get a connection to the D-Bus session bus */
180 ctx.session_bus = dbus_g_bus_get(DBUS_BUS_SESSION, &error);
181 if (!ctx.session_bus) {
182 printf("Couldn't get a D-Bus bus connection\n");
185 ctx.dbus_proxy = dbus_g_proxy_new_for_name(ctx.session_bus,
186 "org.freedesktop.DBus", "/org/freedesktop/DBus",
187 "org.freedesktop.DBus");
188 if (!ctx.dbus_proxy) {
189 printf("Couldn't get an org.freedesktop.DBus proxy\n");
193 dbus_request_osso_browser_name(&ctx);
195 /* Register ourselves to handle the osso_browser D-Bus methods */
196 obj_osso_browser = g_object_new(OSSO_BROWSER_TYPE, NULL);
197 obj_osso_browser_req = g_object_new(OSSO_BROWSER_TYPE, NULL);
198 dbus_g_connection_register_g_object(ctx.session_bus,
199 "/com/nokia/osso_browser", G_OBJECT(obj_osso_browser));
200 dbus_g_connection_register_g_object(ctx.session_bus,
201 "/com/nokia/osso_browser/request",
202 G_OBJECT(obj_osso_browser_req));
204 mainloop = g_main_loop_new(NULL, FALSE);
205 printf("Starting main loop\n");
206 g_main_loop_run(mainloop);
207 printf("Main loop completed\n");