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1 | /* |
2 | * Copyright (c) 2014 Ian Sutton <ian@kremlin.cc> |
3 | * |
4 | * Permission to use, copy, modify, and distribute this software for any |
5 | * purpose with or without fee is hereby granted, provided that the above |
6 | * copyright notice and this permission notice appear in all copies. |
7 | * |
8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
15 | */ |
16 | |
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17 | #include <unistd.h> |
18 | #include <limits.h> |
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19 | #include <signal.h> |
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20 | |
21 | #include <sys/param.h> |
22 | #include <string.h> |
23 | |
24 | #include <glib/gprintf.h> |
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25 | #include <glib-unix.h> |
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26 | #include <polkit/polkit.h> |
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27 | |
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28 | #include "timedated-gen.h" |
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29 | #include "timedated.h" |
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30 | |
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31 | #include "../../util.h" |
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32 | |
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33 | GPtrArray *timedated_freeable; |
34 | Timedate1 *timedated_interf; |
35 | |
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36 | GMainLoop *timedated_loop; |
37 | |
38 | guint bus_descriptor; |
39 | gboolean dbus_interface_exported; /* reliable because of gdbus operational guarantees */ |
40 | |
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41 | /* --- begin method/property/dbus signal code --- */ |
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42 | |
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43 | static gboolean |
44 | on_handle_set_time(Timedate1 *hn1_passed_interf, |
45 | GDBusMethodInvocation *invoc, |
46 | const gchar *greet, |
47 | gpointer data) { |
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48 | return FALSE; |
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49 | } |
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50 | |
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51 | static gboolean |
52 | on_handle_set_timezone(Timedate1 *hn1_passed_interf, |
53 | GDBusMethodInvocation *invoc, |
54 | const gchar *greet, |
55 | gpointer data) { |
56 | return FALSE; |
57 | } |
58 | |
59 | static gboolean |
60 | on_handle_set_local_rtc(Timedate1 *hn1_passed_interf, |
61 | GDBusMethodInvocation *invoc, |
62 | const gchar *greet, |
63 | gpointer data) { |
64 | return FALSE; |
65 | } |
66 | |
67 | static gboolean |
68 | on_handle_set_ntp(Timedate1 *hn1_passed_interf, |
69 | GDBusMethodInvocation *invoc, |
70 | const gchar *greet, |
71 | gpointer data) { |
72 | return FALSE; |
73 | } |
74 | |
75 | const gchar * |
76 | our_get_timezone() { |
77 | |
78 | return ""; |
79 | } |
80 | |
81 | gboolean |
82 | our_get_local_rtc() { |
83 | |
84 | gboolean ret = FALSE; |
85 | |
86 | return ret; |
87 | } |
88 | |
89 | gboolean |
90 | our_get_can_ntp() { |
91 | |
92 | const gboolean ret = FALSE; |
93 | |
94 | return ret; |
95 | } |
96 | |
97 | gboolean |
98 | our_get_ntp() { |
99 | |
100 | const gboolean ret = FALSE; |
101 | |
102 | return ret; |
103 | } |
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104 | |
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105 | gboolean |
106 | our_get_ntpsynchronized() { |
107 | |
108 | const gboolean ret = FALSE; |
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109 | |
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110 | return ret; |
111 | } |
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112 | |
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113 | guint64 |
114 | our_get_time_usec() { |
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115 | |
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116 | guint64 ret = 0; |
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117 | |
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118 | return ret; |
119 | } |
120 | |
121 | guint64 |
122 | our_get_rtc_time_usec() { |
123 | |
124 | guint64 ret = 0; |
125 | |
126 | return ret; |
127 | } |
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128 | |
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129 | /* --- end method/property/dbus signal code, begin bus/name handlers --- */ |
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130 | |
131 | static void timedated_on_bus_acquired(GDBusConnection *conn, |
132 | const gchar *name, |
133 | gpointer user_data) { |
134 | |
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135 | g_printf("got bus/name, exporting %s's interface...\n", name); |
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136 | |
137 | timedated_interf = timedate1_skeleton_new(); |
138 | |
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139 | /* attach function pointers to generated struct's method handlers */ |
140 | g_signal_connect(timedated_interf, "handle-set-time", G_CALLBACK(on_handle_set_time), NULL); |
141 | g_signal_connect(timedated_interf, "handle-set-timezone", G_CALLBACK(on_handle_set_timezone), NULL); |
142 | g_signal_connect(timedated_interf, "handle-set-local-rtc", G_CALLBACK(on_handle_set_local_rtc), NULL); |
143 | g_signal_connect(timedated_interf, "handle-set-ntp", G_CALLBACK(on_handle_set_ntp), NULL); |
144 | /* set our properties before export */ |
145 | timedate1_set_timezone(timedated_interf, our_get_timezone()); |
146 | timedate1_set_local_rtc(timedated_interf, our_get_local_rtc()); |
147 | timedate1_set_can_ntp(timedated_interf, our_get_can_ntp()); |
148 | timedate1_set_ntp(timedated_interf, our_get_ntp()); |
149 | timedate1_set_ntpsynchronized(timedated_interf, our_get_ntpsynchronized()); |
150 | timedate1_set_time_usec(timedated_interf, our_get_time_usec()); |
151 | timedate1_set_rtctime_usec(timedated_interf, our_get_rtc_time_usec()); |
152 | |
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153 | if(!g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(timedated_interf), |
154 | conn, |
155 | "/org/freedesktop/timedate1", |
156 | NULL)) { |
157 | |
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158 | g_printf("failed to export %s's interface!\n", name); |
159 | timedated_mem_clean(); |
160 | |
161 | } else { |
162 | |
163 | dbus_interface_exported = TRUE; |
164 | g_printf("exported %s's interface on the system bus...\n", name); |
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165 | } |
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166 | } |
167 | |
168 | static void timedated_on_name_acquired(GDBusConnection *conn, |
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169 | const gchar *name, |
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170 | gpointer user_data) { |
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171 | |
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172 | g_printf("success!\n"); |
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173 | } |
174 | |
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175 | static void timedated_on_name_lost(GDBusConnection *conn, |
176 | const gchar *name, |
177 | gpointer user_data) { |
178 | |
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179 | if(!conn) { |
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180 | |
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181 | g_printf("failed to connect to the system bus while trying to acquire name '%s': either dbus-daemon isn't running or we don't have permission to push names and/or their interfaces to it.\n", name); |
182 | timedated_mem_clean(); |
183 | } |
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184 | |
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185 | g_print("lost name %s, exiting...\n", name); |
186 | |
187 | timedated_mem_clean(); |
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188 | } |
189 | |
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190 | /* --- end bus/name handlers, begin misc unix functions --- */ |
191 | |
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192 | /* safe call to clean and then exit |
193 | * this stops our GMainLoop safely before letting main() return */ |
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194 | void timedated_mem_clean() { |
195 | |
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196 | g_printf("exiting...\n"); |
197 | |
198 | if(dbus_interface_exported) |
199 | g_dbus_interface_skeleton_unexport(G_DBUS_INTERFACE_SKELETON(timedated_interf)); |
200 | |
201 | if(g_main_loop_is_running(timedated_loop)) |
202 | g_main_loop_quit(timedated_loop); |
203 | |
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204 | } |
205 | |
712eb329 |
206 | /* wrapper for glib's unix signal handling; called only once if terminating signal is raised against us */ |
207 | gboolean unix_sig_terminate_handler(gpointer data) { |
208 | |
209 | g_printf("caught SIGINT/HUP/TERM, exiting\n"); |
210 | |
211 | timedated_mem_clean(); |
212 | return G_SOURCE_REMOVE; |
213 | } |
214 | |
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215 | void set_signal_handlers() { |
216 | |
217 | /* we don't care about its descriptor, we never need to unregister these */ |
218 | g_unix_signal_add(SIGINT, unix_sig_terminate_handler, NULL); |
219 | g_unix_signal_add(SIGHUP, unix_sig_terminate_handler, NULL); |
220 | g_unix_signal_add(SIGTERM, unix_sig_terminate_handler, NULL); |
221 | } |
222 | |
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223 | int main() { |
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224 | |
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225 | set_signal_handlers(); |
226 | |
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227 | timedated_loop = g_main_loop_new(NULL, TRUE); |
228 | timedated_freeable = g_ptr_array_new(); |
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229 | |
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230 | bus_descriptor = g_bus_own_name(G_BUS_TYPE_SYSTEM, |
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231 | "org.freedesktop.timedate1", |
232 | G_BUS_NAME_OWNER_FLAGS_NONE, |
233 | timedated_on_bus_acquired, |
234 | timedated_on_name_acquired, |
235 | timedated_on_name_lost, |
236 | NULL, |
237 | NULL); |
238 | |
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239 | g_main_loop_run(timedated_loop); |
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240 | /* runs until single g_main_loop_quit() call is raised inside <interface>_mem_clean() */ |
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241 | g_main_loop_unref(timedated_loop); |
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242 | |
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243 | /* guaranteed unownable */ |
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244 | g_bus_unown_name(bus_descriptor); |
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245 | |
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246 | /* at this point no operations can occur with our data, it is safe to free it + its container */ |
247 | g_ptr_array_free(timedated_freeable, TRUE); |
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248 | |
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249 | return 0; |
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250 | } |