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aff33962 | 1 | /* dnsmasq is Copyright (c) 2000-2015 Simon Kelley |
3d8df260 SK |
2 | |
3 | This program is free software; you can redistribute it and/or modify | |
4 | it under the terms of the GNU General Public License as published by | |
824af85b SK |
5 | the Free Software Foundation; version 2 dated June, 1991, or |
6 | (at your option) version 3 dated 29 June, 2007. | |
7 | ||
3d8df260 SK |
8 | This program is distributed in the hope that it will be useful, |
9 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | GNU General Public License for more details. | |
824af85b | 12 | |
73a08a24 SK |
13 | You should have received a copy of the GNU General Public License |
14 | along with this program. If not, see <http://www.gnu.org/licenses/>. | |
3d8df260 SK |
15 | */ |
16 | ||
17 | #include "dnsmasq.h" | |
18 | ||
19 | #ifdef HAVE_DBUS | |
20 | ||
3d8df260 SK |
21 | #include <dbus/dbus.h> |
22 | ||
ad094275 | 23 | const char* introspection_xml_template = |
73a08a24 SK |
24 | "<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n" |
25 | "\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n" | |
26 | "<node name=\"" DNSMASQ_PATH "\">\n" | |
27 | " <interface name=\"org.freedesktop.DBus.Introspectable\">\n" | |
28 | " <method name=\"Introspect\">\n" | |
29 | " <arg name=\"data\" direction=\"out\" type=\"s\"/>\n" | |
30 | " </method>\n" | |
31 | " </interface>\n" | |
ad094275 | 32 | " <interface name=\"%s\">\n" |
73a08a24 SK |
33 | " <method name=\"ClearCache\">\n" |
34 | " </method>\n" | |
35 | " <method name=\"GetVersion\">\n" | |
36 | " <arg name=\"version\" direction=\"out\" type=\"s\"/>\n" | |
37 | " </method>\n" | |
aaeea9f6 SK |
38 | #ifdef HAVE_LOOP |
39 | " <method name=\"GetLoopServers\">\n" | |
40 | " <arg name=\"server\" direction=\"out\" type=\"as\"/>\n" | |
41 | " </method>\n" | |
42 | #endif | |
73a08a24 SK |
43 | " <method name=\"SetServers\">\n" |
44 | " <arg name=\"servers\" direction=\"in\" type=\"av\"/>\n" | |
45 | " </method>\n" | |
295a54ee SK |
46 | " <method name=\"SetDomainServers\">\n" |
47 | " <arg name=\"servers\" direction=\"in\" type=\"as\"/>\n" | |
48 | " </method>\n" | |
faafb3f7 SK |
49 | " <method name=\"SetServersEx\">\n" |
50 | " <arg name=\"servers\" direction=\"in\" type=\"aas\"/>\n" | |
51 | " </method>\n" | |
c4638f9e DC |
52 | " <method name=\"SetFilterWin2KOption\">\n" |
53 | " <arg name=\"filterwin2k\" direction=\"in\" type=\"b\"/>\n" | |
54 | " </method>\n" | |
55 | " <method name=\"SetBogusPrivOption\">\n" | |
56 | " <arg name=\"boguspriv\" direction=\"in\" type=\"b\"/>\n" | |
57 | " </method>\n" | |
73a08a24 SK |
58 | " <signal name=\"DhcpLeaseAdded\">\n" |
59 | " <arg name=\"ipaddr\" type=\"s\"/>\n" | |
60 | " <arg name=\"hwaddr\" type=\"s\"/>\n" | |
61 | " <arg name=\"hostname\" type=\"s\"/>\n" | |
62 | " </signal>\n" | |
63 | " <signal name=\"DhcpLeaseDeleted\">\n" | |
64 | " <arg name=\"ipaddr\" type=\"s\"/>\n" | |
65 | " <arg name=\"hwaddr\" type=\"s\"/>\n" | |
66 | " <arg name=\"hostname\" type=\"s\"/>\n" | |
67 | " </signal>\n" | |
68 | " <signal name=\"DhcpLeaseUpdated\">\n" | |
69 | " <arg name=\"ipaddr\" type=\"s\"/>\n" | |
70 | " <arg name=\"hwaddr\" type=\"s\"/>\n" | |
71 | " <arg name=\"hostname\" type=\"s\"/>\n" | |
72 | " </signal>\n" | |
c6d82c9b NC |
73 | #ifdef HAVE_DHCP |
74 | " <method name=\"AddDhcpLease\">\n" | |
75 | " <arg name=\"ipaddr\" type=\"s\"/>\n" | |
76 | " <arg name=\"hwaddr\" type=\"s\"/>\n" | |
77 | " <arg name=\"hostname\" type=\"ay\"/>\n" | |
78 | " <arg name=\"clid\" type=\"ay\"/>\n" | |
79 | " <arg name=\"lease_duration\" type=\"u\"/>\n" | |
80 | " <arg name=\"ia_id\" type=\"u\"/>\n" | |
81 | " <arg name=\"is_temporary\" type=\"b\"/>\n" | |
82 | " </method>\n" | |
83 | " <method name=\"DeleteDhcpLease\">\n" | |
84 | " <arg name=\"ipaddr\" type=\"s\"/>\n" | |
85 | " <arg name=\"success\" type=\"b\" direction=\"out\"/>\n" | |
86 | " </method>\n" | |
87 | #endif | |
73a08a24 SK |
88 | " </interface>\n" |
89 | "</node>\n"; | |
90 | ||
ad094275 SK |
91 | static char *introspection_xml = NULL; |
92 | ||
3d8df260 SK |
93 | struct watch { |
94 | DBusWatch *watch; | |
95 | struct watch *next; | |
96 | }; | |
97 | ||
98 | ||
99 | static dbus_bool_t add_watch(DBusWatch *watch, void *data) | |
100 | { | |
3d8df260 SK |
101 | struct watch *w; |
102 | ||
103 | for (w = daemon->watches; w; w = w->next) | |
104 | if (w->watch == watch) | |
105 | return TRUE; | |
106 | ||
5aabfc78 | 107 | if (!(w = whine_malloc(sizeof(struct watch)))) |
3d8df260 SK |
108 | return FALSE; |
109 | ||
110 | w->watch = watch; | |
111 | w->next = daemon->watches; | |
112 | daemon->watches = w; | |
113 | ||
5aabfc78 | 114 | w = data; /* no warning */ |
3d8df260 SK |
115 | return TRUE; |
116 | } | |
117 | ||
118 | static void remove_watch(DBusWatch *watch, void *data) | |
119 | { | |
25c4198f | 120 | struct watch **up, *w, *tmp; |
3d8df260 | 121 | |
25c4198f SK |
122 | for (up = &(daemon->watches), w = daemon->watches; w; w = tmp) |
123 | { | |
124 | tmp = w->next; | |
125 | if (w->watch == watch) | |
126 | { | |
127 | *up = tmp; | |
128 | free(w); | |
129 | } | |
130 | else | |
131 | up = &(w->next); | |
132 | } | |
5aabfc78 SK |
133 | |
134 | w = data; /* no warning */ | |
3d8df260 SK |
135 | } |
136 | ||
faafb3f7 SK |
137 | static void dbus_read_servers(DBusMessage *message) |
138 | { | |
139 | DBusMessageIter iter; | |
140 | union mysockaddr addr, source_addr; | |
141 | char *domain; | |
3d8df260 | 142 | |
faafb3f7 SK |
143 | dbus_message_iter_init(message, &iter); |
144 | ||
d68c2ca2 SK |
145 | mark_servers(SERV_FROM_DBUS); |
146 | ||
3d8df260 SK |
147 | while (1) |
148 | { | |
149 | int skip = 0; | |
150 | ||
151 | if (dbus_message_iter_get_arg_type(&iter) == DBUS_TYPE_UINT32) | |
152 | { | |
153 | u32 a; | |
154 | ||
155 | dbus_message_iter_get_basic(&iter, &a); | |
156 | dbus_message_iter_next (&iter); | |
157 | ||
158 | #ifdef HAVE_SOCKADDR_SA_LEN | |
159 | source_addr.in.sin_len = addr.in.sin_len = sizeof(struct sockaddr_in); | |
160 | #endif | |
161 | addr.in.sin_addr.s_addr = ntohl(a); | |
162 | source_addr.in.sin_family = addr.in.sin_family = AF_INET; | |
163 | addr.in.sin_port = htons(NAMESERVER_PORT); | |
164 | source_addr.in.sin_addr.s_addr = INADDR_ANY; | |
165 | source_addr.in.sin_port = htons(daemon->query_port); | |
166 | } | |
167 | else if (dbus_message_iter_get_arg_type(&iter) == DBUS_TYPE_BYTE) | |
168 | { | |
169 | unsigned char p[sizeof(struct in6_addr)]; | |
170 | unsigned int i; | |
171 | ||
172 | skip = 1; | |
173 | ||
174 | for(i = 0; i < sizeof(struct in6_addr); i++) | |
175 | { | |
176 | dbus_message_iter_get_basic(&iter, &p[i]); | |
177 | dbus_message_iter_next (&iter); | |
178 | if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BYTE) | |
006c1623 SK |
179 | { |
180 | i++; | |
181 | break; | |
182 | } | |
3d8df260 SK |
183 | } |
184 | ||
185 | #ifndef HAVE_IPV6 | |
f2621c7f | 186 | my_syslog(LOG_WARNING, _("attempt to set an IPv6 server address via DBus - no IPv6 support")); |
3d8df260 | 187 | #else |
006c1623 | 188 | if (i == sizeof(struct in6_addr)) |
3d8df260 | 189 | { |
824af85b | 190 | memcpy(&addr.in6.sin6_addr, p, sizeof(struct in6_addr)); |
3d8df260 | 191 | #ifdef HAVE_SOCKADDR_SA_LEN |
9e038946 | 192 | source_addr.in6.sin6_len = addr.in6.sin6_len = sizeof(struct sockaddr_in6); |
3d8df260 SK |
193 | #endif |
194 | source_addr.in6.sin6_family = addr.in6.sin6_family = AF_INET6; | |
195 | addr.in6.sin6_port = htons(NAMESERVER_PORT); | |
5e9e0efb SK |
196 | source_addr.in6.sin6_flowinfo = addr.in6.sin6_flowinfo = 0; |
197 | source_addr.in6.sin6_scope_id = addr.in6.sin6_scope_id = 0; | |
3d8df260 SK |
198 | source_addr.in6.sin6_addr = in6addr_any; |
199 | source_addr.in6.sin6_port = htons(daemon->query_port); | |
200 | skip = 0; | |
201 | } | |
202 | #endif | |
203 | } | |
204 | else | |
205 | /* At the end */ | |
206 | break; | |
207 | ||
faafb3f7 | 208 | /* process each domain */ |
3d8df260 SK |
209 | do { |
210 | if (dbus_message_iter_get_arg_type(&iter) == DBUS_TYPE_STRING) | |
211 | { | |
212 | dbus_message_iter_get_basic(&iter, &domain); | |
213 | dbus_message_iter_next (&iter); | |
214 | } | |
215 | else | |
216 | domain = NULL; | |
217 | ||
218 | if (!skip) | |
d68c2ca2 | 219 | add_update_server(SERV_FROM_DBUS, &addr, &source_addr, NULL, domain); |
faafb3f7 SK |
220 | |
221 | } while (dbus_message_iter_get_arg_type(&iter) == DBUS_TYPE_STRING); | |
3d8df260 | 222 | } |
faafb3f7 | 223 | |
3d8df260 | 224 | /* unlink and free anything still marked. */ |
d68c2ca2 | 225 | cleanup_servers(); |
faafb3f7 SK |
226 | } |
227 | ||
aaeea9f6 SK |
228 | #ifdef HAVE_LOOP |
229 | static DBusMessage *dbus_reply_server_loop(DBusMessage *message) | |
230 | { | |
231 | DBusMessageIter args, args_iter; | |
232 | struct server *serv; | |
233 | DBusMessage *reply = dbus_message_new_method_return(message); | |
234 | ||
235 | dbus_message_iter_init_append (reply, &args); | |
236 | dbus_message_iter_open_container (&args, DBUS_TYPE_ARRAY,DBUS_TYPE_STRING_AS_STRING, &args_iter); | |
237 | ||
238 | for (serv = daemon->servers; serv; serv = serv->next) | |
239 | if (serv->flags & SERV_LOOP) | |
240 | { | |
241 | prettyprint_addr(&serv->addr, daemon->addrbuff); | |
242 | dbus_message_iter_append_basic (&args_iter, DBUS_TYPE_STRING, &daemon->addrbuff); | |
243 | } | |
244 | ||
245 | dbus_message_iter_close_container (&args, &args_iter); | |
246 | ||
247 | return reply; | |
248 | } | |
249 | #endif | |
250 | ||
295a54ee | 251 | static DBusMessage* dbus_read_servers_ex(DBusMessage *message, int strings) |
faafb3f7 SK |
252 | { |
253 | DBusMessageIter iter, array_iter, string_iter; | |
254 | DBusMessage *error = NULL; | |
255 | const char *addr_err; | |
295a54ee SK |
256 | char *dup = NULL; |
257 | ||
faafb3f7 | 258 | if (!dbus_message_iter_init(message, &iter)) |
3d8df260 | 259 | { |
faafb3f7 SK |
260 | return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, |
261 | "Failed to initialize dbus message iter"); | |
3d8df260 SK |
262 | } |
263 | ||
faafb3f7 SK |
264 | /* check that the message contains an array of arrays */ |
265 | if ((dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY) || | |
295a54ee | 266 | (dbus_message_iter_get_element_type(&iter) != (strings ? DBUS_TYPE_STRING : DBUS_TYPE_ARRAY))) |
faafb3f7 SK |
267 | { |
268 | return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, | |
295a54ee | 269 | strings ? "Expected array of string" : "Expected array of string arrays"); |
faafb3f7 SK |
270 | } |
271 | ||
d68c2ca2 | 272 | mark_servers(SERV_FROM_DBUS); |
faafb3f7 SK |
273 | |
274 | /* array_iter points to each "as" element in the outer array */ | |
275 | dbus_message_iter_recurse(&iter, &array_iter); | |
276 | while (dbus_message_iter_get_arg_type(&array_iter) != DBUS_TYPE_INVALID) | |
277 | { | |
278 | const char *str = NULL; | |
279 | union mysockaddr addr, source_addr; | |
7b1eae4f | 280 | int flags = 0; |
faafb3f7 | 281 | char interface[IF_NAMESIZE]; |
d89fb4ed | 282 | char *str_addr, *str_domain = NULL; |
faafb3f7 | 283 | |
295a54ee SK |
284 | if (strings) |
285 | { | |
286 | dbus_message_iter_get_basic(&array_iter, &str); | |
287 | if (!str || !strlen (str)) | |
288 | { | |
289 | error = dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, | |
290 | "Empty string"); | |
291 | break; | |
292 | } | |
293 | ||
294 | /* dup the string because it gets modified during parsing */ | |
9c4270bc SK |
295 | if (dup) |
296 | free(dup); | |
295a54ee SK |
297 | if (!(dup = str_domain = whine_malloc(strlen(str)+1))) |
298 | break; | |
9c4270bc | 299 | |
295a54ee | 300 | strcpy(str_domain, str); |
faafb3f7 | 301 | |
295a54ee SK |
302 | /* point to address part of old string for error message */ |
303 | if ((str_addr = strrchr(str, '/'))) | |
304 | str = str_addr+1; | |
305 | ||
306 | if ((str_addr = strrchr(str_domain, '/'))) | |
307 | { | |
308 | if (*str_domain != '/' || str_addr == str_domain) | |
309 | { | |
310 | error = dbus_message_new_error_printf(message, | |
311 | DBUS_ERROR_INVALID_ARGS, | |
312 | "No domain terminator '%s'", | |
313 | str); | |
314 | break; | |
315 | } | |
316 | *str_addr++ = 0; | |
317 | str_domain++; | |
318 | } | |
319 | else | |
320 | { | |
321 | str_addr = str_domain; | |
322 | str_domain = NULL; | |
323 | } | |
324 | ||
325 | ||
326 | } | |
327 | else | |
328 | { | |
329 | /* check the types of the struct and its elements */ | |
330 | if ((dbus_message_iter_get_arg_type(&array_iter) != DBUS_TYPE_ARRAY) || | |
331 | (dbus_message_iter_get_element_type(&array_iter) != DBUS_TYPE_STRING)) | |
332 | { | |
333 | error = dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, | |
334 | "Expected inner array of strings"); | |
335 | break; | |
336 | } | |
337 | ||
338 | /* string_iter points to each "s" element in the inner array */ | |
339 | dbus_message_iter_recurse(&array_iter, &string_iter); | |
340 | if (dbus_message_iter_get_arg_type(&string_iter) != DBUS_TYPE_STRING) | |
341 | { | |
342 | /* no IP address given */ | |
343 | error = dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, | |
344 | "Expected IP address"); | |
345 | break; | |
346 | } | |
347 | ||
348 | dbus_message_iter_get_basic(&string_iter, &str); | |
349 | if (!str || !strlen (str)) | |
350 | { | |
351 | error = dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, | |
352 | "Empty IP address"); | |
353 | break; | |
354 | } | |
355 | ||
356 | /* dup the string because it gets modified during parsing */ | |
9c4270bc SK |
357 | if (dup) |
358 | free(dup); | |
295a54ee SK |
359 | if (!(dup = str_addr = whine_malloc(strlen(str)+1))) |
360 | break; | |
9c4270bc | 361 | |
295a54ee SK |
362 | strcpy(str_addr, str); |
363 | } | |
faafb3f7 SK |
364 | |
365 | memset(&addr, 0, sizeof(addr)); | |
366 | memset(&source_addr, 0, sizeof(source_addr)); | |
367 | memset(&interface, 0, sizeof(interface)); | |
368 | ||
faafb3f7 | 369 | /* parse the IP address */ |
d68c2ca2 SK |
370 | if ((addr_err = parse_server(str_addr, &addr, &source_addr, (char *) &interface, &flags))) |
371 | { | |
faafb3f7 SK |
372 | error = dbus_message_new_error_printf(message, DBUS_ERROR_INVALID_ARGS, |
373 | "Invalid IP address '%s': %s", | |
374 | str, addr_err); | |
375 | break; | |
376 | } | |
d68c2ca2 SK |
377 | |
378 | /* 0.0.0.0 for server address == NULL, for Dbus */ | |
379 | if (addr.in.sin_family == AF_INET && | |
380 | addr.in.sin_addr.s_addr == 0) | |
381 | flags |= SERV_NO_ADDR; | |
382 | ||
295a54ee SK |
383 | if (strings) |
384 | { | |
385 | char *p; | |
386 | ||
387 | do { | |
388 | if (str_domain) | |
389 | { | |
390 | if ((p = strchr(str_domain, '/'))) | |
391 | *p++ = 0; | |
392 | } | |
393 | else | |
394 | p = NULL; | |
395 | ||
d68c2ca2 | 396 | add_update_server(flags | SERV_FROM_DBUS, &addr, &source_addr, interface, str_domain); |
295a54ee SK |
397 | } while ((str_domain = p)); |
398 | } | |
399 | else | |
400 | { | |
401 | /* jump past the address to the domain list (if any) */ | |
402 | dbus_message_iter_next (&string_iter); | |
403 | ||
404 | /* parse domains and add each server/domain pair to the list */ | |
405 | do { | |
406 | str = NULL; | |
407 | if (dbus_message_iter_get_arg_type(&string_iter) == DBUS_TYPE_STRING) | |
408 | dbus_message_iter_get_basic(&string_iter, &str); | |
409 | dbus_message_iter_next (&string_iter); | |
410 | ||
d68c2ca2 | 411 | add_update_server(flags | SERV_FROM_DBUS, &addr, &source_addr, interface, str); |
295a54ee SK |
412 | } while (dbus_message_iter_get_arg_type(&string_iter) == DBUS_TYPE_STRING); |
413 | } | |
414 | ||
faafb3f7 SK |
415 | /* jump to next element in outer array */ |
416 | dbus_message_iter_next(&array_iter); | |
417 | } | |
418 | ||
d68c2ca2 | 419 | cleanup_servers(); |
faafb3f7 | 420 | |
295a54ee SK |
421 | if (dup) |
422 | free(dup); | |
423 | ||
faafb3f7 | 424 | return error; |
3d8df260 SK |
425 | } |
426 | ||
c4638f9e DC |
427 | static DBusMessage *dbus_set_bool(DBusMessage *message, int flag, char *name) |
428 | { | |
429 | DBusMessageIter iter; | |
430 | dbus_bool_t enabled; | |
431 | ||
432 | if (!dbus_message_iter_init(message, &iter) || dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN) | |
433 | return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, "Expected boolean argument"); | |
434 | ||
435 | dbus_message_iter_get_basic(&iter, &enabled); | |
436 | ||
437 | if (enabled) | |
438 | { | |
d91b1fd4 | 439 | my_syslog(LOG_INFO, _("Enabling --%s option from D-Bus"), name); |
c4638f9e DC |
440 | set_option_bool(flag); |
441 | } | |
442 | else | |
443 | { | |
d91b1fd4 | 444 | my_syslog(LOG_INFO, _("Disabling --%s option from D-Bus"), name); |
c4638f9e DC |
445 | reset_option_bool(flag); |
446 | } | |
447 | ||
448 | return NULL; | |
449 | } | |
450 | ||
c6d82c9b NC |
451 | #ifdef HAVE_DHCP |
452 | static DBusMessage *dbus_add_lease(DBusMessage* message) | |
453 | { | |
454 | struct dhcp_lease *lease; | |
455 | const char *ipaddr, *hwaddr, *hostname, *tmp; | |
456 | const unsigned char* clid; | |
457 | int clid_len, hostname_len, hw_len, hw_type; | |
458 | dbus_uint32_t expires, ia_id; | |
459 | dbus_bool_t is_temporary; | |
460 | struct all_addr addr; | |
461 | time_t now = dnsmasq_time(); | |
462 | unsigned char dhcp_chaddr[DHCP_CHADDR_MAX]; | |
463 | ||
464 | DBusMessageIter iter, array_iter; | |
465 | if (!dbus_message_iter_init(message, &iter)) | |
466 | return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, | |
467 | "Failed to initialize dbus message iter"); | |
468 | ||
469 | if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) | |
470 | return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, | |
471 | "Expected string as first argument"); | |
472 | ||
473 | dbus_message_iter_get_basic(&iter, &ipaddr); | |
474 | dbus_message_iter_next(&iter); | |
475 | ||
476 | if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) | |
477 | return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, | |
478 | "Expected string as second argument"); | |
479 | ||
480 | dbus_message_iter_get_basic(&iter, &hwaddr); | |
481 | dbus_message_iter_next(&iter); | |
482 | ||
483 | if ((dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY) || | |
484 | (dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_BYTE)) | |
485 | return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, | |
486 | "Expected byte array as third argument"); | |
487 | ||
488 | dbus_message_iter_recurse(&iter, &array_iter); | |
489 | dbus_message_iter_get_fixed_array(&array_iter, &hostname, &hostname_len); | |
490 | tmp = memchr(hostname, '\0', hostname_len); | |
491 | if (tmp) | |
492 | { | |
493 | if (tmp == &hostname[hostname_len - 1]) | |
494 | hostname_len--; | |
495 | else | |
496 | return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, | |
497 | "Hostname contains an embedded NUL character"); | |
498 | } | |
499 | dbus_message_iter_next(&iter); | |
500 | ||
501 | if ((dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY) || | |
502 | (dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_BYTE)) | |
503 | return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, | |
504 | "Expected byte array as fourth argument"); | |
505 | ||
506 | dbus_message_iter_recurse(&iter, &array_iter); | |
507 | dbus_message_iter_get_fixed_array(&array_iter, &clid, &clid_len); | |
508 | dbus_message_iter_next(&iter); | |
509 | ||
510 | if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32) | |
511 | return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, | |
512 | "Expected uint32 as fifth argument"); | |
513 | ||
514 | dbus_message_iter_get_basic(&iter, &expires); | |
515 | dbus_message_iter_next(&iter); | |
516 | ||
517 | if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32) | |
518 | return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, | |
519 | "Expected uint32 as sixth argument"); | |
520 | ||
521 | dbus_message_iter_get_basic(&iter, &ia_id); | |
522 | dbus_message_iter_next(&iter); | |
523 | ||
524 | if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN) | |
525 | return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, | |
526 | "Expected uint32 as sixth argument"); | |
527 | ||
528 | dbus_message_iter_get_basic(&iter, &is_temporary); | |
529 | ||
530 | if (inet_pton(AF_INET, ipaddr, &addr.addr.addr4)) | |
531 | { | |
532 | if (ia_id != 0 || is_temporary) | |
533 | return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, | |
534 | "ia_id and is_temporary must be zero for IPv4 lease"); | |
535 | ||
536 | if (!(lease = lease_find_by_addr(addr.addr.addr4))) | |
537 | lease = lease4_allocate(addr.addr.addr4); | |
538 | } | |
539 | #ifdef HAVE_DHCP6 | |
540 | else if (inet_pton(AF_INET6, ipaddr, &addr.addr.addr6)) | |
541 | { | |
542 | if (!(lease = lease6_find_by_addr(&addr.addr.addr6, 128, 0))) | |
543 | lease = lease6_allocate(&addr.addr.addr6, | |
544 | is_temporary ? LEASE_TA : LEASE_NA); | |
545 | lease_set_iaid(lease, ia_id); | |
546 | } | |
547 | #endif | |
548 | else | |
549 | return dbus_message_new_error_printf(message, DBUS_ERROR_INVALID_ARGS, | |
550 | "Invalid IP address '%s'", ipaddr); | |
551 | ||
552 | hw_len = parse_hex((char*)hwaddr, dhcp_chaddr, DHCP_CHADDR_MAX, NULL, | |
553 | &hw_type); | |
554 | if (hw_type == 0 && hw_len != 0) | |
555 | hw_type = ARPHRD_ETHER; | |
556 | ||
557 | lease_set_hwaddr(lease, dhcp_chaddr, clid, hw_len, hw_type, | |
558 | clid_len, now, 0); | |
559 | lease_set_expires(lease, expires, now); | |
560 | if (hostname_len != 0) | |
561 | lease_set_hostname(lease, hostname, 0, get_domain(lease->addr), NULL); | |
562 | ||
563 | lease_update_file(now); | |
564 | lease_update_dns(0); | |
565 | ||
566 | return NULL; | |
567 | } | |
568 | ||
569 | static DBusMessage *dbus_del_lease(DBusMessage* message) | |
570 | { | |
571 | struct dhcp_lease *lease; | |
572 | DBusMessageIter iter; | |
573 | const char *ipaddr; | |
574 | DBusMessage *reply; | |
575 | struct all_addr addr; | |
576 | dbus_bool_t ret = 1; | |
577 | time_t now = dnsmasq_time(); | |
578 | ||
579 | if (!dbus_message_iter_init(message, &iter)) | |
580 | return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, | |
581 | "Failed to initialize dbus message iter"); | |
582 | ||
583 | if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) | |
584 | return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS, | |
585 | "Expected string as first argument"); | |
586 | ||
587 | dbus_message_iter_get_basic(&iter, &ipaddr); | |
588 | ||
589 | if (inet_pton(AF_INET, ipaddr, &addr.addr.addr4)) | |
590 | lease = lease_find_by_addr(addr.addr.addr4); | |
591 | #ifdef HAVE_DHCP6 | |
592 | else if (inet_pton(AF_INET6, ipaddr, &addr.addr.addr6)) | |
593 | lease = lease6_find_by_addr(&addr.addr.addr6, 128, 0); | |
594 | #endif | |
595 | else | |
596 | return dbus_message_new_error_printf(message, DBUS_ERROR_INVALID_ARGS, | |
597 | "Invalid IP address '%s'", ipaddr); | |
598 | ||
599 | if (lease) | |
600 | { | |
601 | lease_prune(lease, now); | |
602 | lease_update_file(now); | |
603 | lease_update_dns(0); | |
604 | } | |
605 | else | |
606 | ret = 0; | |
607 | ||
608 | if ((reply = dbus_message_new_method_return(message))) | |
609 | dbus_message_append_args(reply, DBUS_TYPE_BOOLEAN, &ret, | |
610 | DBUS_TYPE_INVALID); | |
611 | ||
612 | ||
613 | return reply; | |
614 | } | |
615 | #endif | |
616 | ||
5e9e0efb SK |
617 | DBusHandlerResult message_handler(DBusConnection *connection, |
618 | DBusMessage *message, | |
619 | void *user_data) | |
3d8df260 SK |
620 | { |
621 | char *method = (char *)dbus_message_get_member(message); | |
faafb3f7 | 622 | DBusMessage *reply = NULL; |
d9fb0be8 | 623 | int clear_cache = 0, new_servers = 0; |
295a54ee | 624 | |
73a08a24 SK |
625 | if (dbus_message_is_method_call(message, DBUS_INTERFACE_INTROSPECTABLE, "Introspect")) |
626 | { | |
ad094275 SK |
627 | /* string length: "%s" provides space for termination zero */ |
628 | if (!introspection_xml && | |
629 | (introspection_xml = whine_malloc(strlen(introspection_xml_template) + strlen(daemon->dbus_name)))) | |
630 | sprintf(introspection_xml, introspection_xml_template, daemon->dbus_name); | |
631 | ||
632 | if (introspection_xml) | |
633 | { | |
634 | reply = dbus_message_new_method_return(message); | |
ad094275 | 635 | dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection_xml, DBUS_TYPE_INVALID); |
ad094275 | 636 | } |
73a08a24 SK |
637 | } |
638 | else if (strcmp(method, "GetVersion") == 0) | |
3d8df260 SK |
639 | { |
640 | char *v = VERSION; | |
faafb3f7 | 641 | reply = dbus_message_new_method_return(message); |
3d8df260 SK |
642 | |
643 | dbus_message_append_args(reply, DBUS_TYPE_STRING, &v, DBUS_TYPE_INVALID); | |
3d8df260 | 644 | } |
aaeea9f6 SK |
645 | #ifdef HAVE_LOOP |
646 | else if (strcmp(method, "GetLoopServers") == 0) | |
647 | { | |
648 | reply = dbus_reply_server_loop(message); | |
649 | } | |
650 | #endif | |
3d8df260 SK |
651 | else if (strcmp(method, "SetServers") == 0) |
652 | { | |
5aabfc78 | 653 | dbus_read_servers(message); |
d9fb0be8 | 654 | new_servers = 1; |
3d8df260 | 655 | } |
faafb3f7 SK |
656 | else if (strcmp(method, "SetServersEx") == 0) |
657 | { | |
295a54ee | 658 | reply = dbus_read_servers_ex(message, 0); |
d9fb0be8 | 659 | new_servers = 1; |
295a54ee SK |
660 | } |
661 | else if (strcmp(method, "SetDomainServers") == 0) | |
662 | { | |
663 | reply = dbus_read_servers_ex(message, 1); | |
d9fb0be8 | 664 | new_servers = 1; |
faafb3f7 | 665 | } |
c4638f9e DC |
666 | else if (strcmp(method, "SetFilterWin2KOption") == 0) |
667 | { | |
668 | reply = dbus_set_bool(message, OPT_FILTER, "filterwin2k"); | |
669 | } | |
670 | else if (strcmp(method, "SetBogusPrivOption") == 0) | |
671 | { | |
672 | reply = dbus_set_bool(message, OPT_BOGUSPRIV, "bogus-priv"); | |
673 | } | |
c6d82c9b NC |
674 | #ifdef HAVE_DHCP |
675 | else if (strcmp(method, "AddDhcpLease") == 0) | |
676 | { | |
677 | reply = dbus_add_lease(message); | |
678 | } | |
679 | else if (strcmp(method, "DeleteDhcpLease") == 0) | |
680 | { | |
681 | reply = dbus_del_lease(message); | |
682 | } | |
683 | #endif | |
3d8df260 | 684 | else if (strcmp(method, "ClearCache") == 0) |
d9fb0be8 | 685 | clear_cache = 1; |
3d8df260 SK |
686 | else |
687 | return (DBUS_HANDLER_RESULT_NOT_YET_HANDLED); | |
d9fb0be8 SK |
688 | |
689 | if (new_servers) | |
690 | { | |
691 | my_syslog(LOG_INFO, _("setting upstream servers from DBus")); | |
692 | check_servers(); | |
693 | if (option_bool(OPT_RELOAD)) | |
694 | clear_cache = 1; | |
695 | } | |
696 | ||
697 | if (clear_cache) | |
698 | clear_cache_and_reload(dnsmasq_time()); | |
3d8df260 | 699 | |
5aabfc78 SK |
700 | method = user_data; /* no warning */ |
701 | ||
faafb3f7 SK |
702 | /* If no reply or no error, return nothing */ |
703 | if (!reply) | |
704 | reply = dbus_message_new_method_return(message); | |
705 | ||
706 | if (reply) | |
707 | { | |
708 | dbus_connection_send (connection, reply, NULL); | |
709 | dbus_message_unref (reply); | |
710 | } | |
711 | ||
3d8df260 | 712 | return (DBUS_HANDLER_RESULT_HANDLED); |
3d8df260 SK |
713 | } |
714 | ||
715 | ||
716 | /* returns NULL or error message, may fail silently if dbus daemon not yet up. */ | |
5aabfc78 | 717 | char *dbus_init(void) |
3d8df260 SK |
718 | { |
719 | DBusConnection *connection = NULL; | |
720 | DBusObjectPathVTable dnsmasq_vtable = {NULL, &message_handler, NULL, NULL, NULL, NULL }; | |
721 | DBusError dbus_error; | |
722 | DBusMessage *message; | |
723 | ||
724 | dbus_error_init (&dbus_error); | |
725 | if (!(connection = dbus_bus_get (DBUS_BUS_SYSTEM, &dbus_error))) | |
726 | return NULL; | |
7cebd20f | 727 | |
3d8df260 SK |
728 | dbus_connection_set_exit_on_disconnect(connection, FALSE); |
729 | dbus_connection_set_watch_functions(connection, add_watch, remove_watch, | |
5aabfc78 | 730 | NULL, NULL, NULL); |
3d8df260 | 731 | dbus_error_init (&dbus_error); |
ad094275 | 732 | dbus_bus_request_name (connection, daemon->dbus_name, 0, &dbus_error); |
3d8df260 SK |
733 | if (dbus_error_is_set (&dbus_error)) |
734 | return (char *)dbus_error.message; | |
735 | ||
736 | if (!dbus_connection_register_object_path(connection, DNSMASQ_PATH, | |
5aabfc78 | 737 | &dnsmasq_vtable, NULL)) |
b8187c80 | 738 | return _("could not register a DBus message handler"); |
3d8df260 SK |
739 | |
740 | daemon->dbus = connection; | |
741 | ||
ad094275 | 742 | if ((message = dbus_message_new_signal(DNSMASQ_PATH, daemon->dbus_name, "Up"))) |
9009d746 SK |
743 | { |
744 | dbus_connection_send(connection, message, NULL); | |
745 | dbus_message_unref(message); | |
746 | } | |
3d8df260 SK |
747 | |
748 | return NULL; | |
749 | } | |
750 | ||
751 | ||
5aabfc78 | 752 | void set_dbus_listeners(int *maxfdp, |
1697269c | 753 | fd_set *rset, fd_set *wset, fd_set *eset) |
3d8df260 SK |
754 | { |
755 | struct watch *w; | |
756 | ||
757 | for (w = daemon->watches; w; w = w->next) | |
758 | if (dbus_watch_get_enabled(w->watch)) | |
759 | { | |
760 | unsigned int flags = dbus_watch_get_flags(w->watch); | |
824af85b | 761 | int fd = dbus_watch_get_unix_fd(w->watch); |
3d8df260 | 762 | |
1697269c | 763 | bump_maxfd(fd, maxfdp); |
3d8df260 SK |
764 | |
765 | if (flags & DBUS_WATCH_READABLE) | |
766 | FD_SET(fd, rset); | |
767 | ||
768 | if (flags & DBUS_WATCH_WRITABLE) | |
769 | FD_SET(fd, wset); | |
770 | ||
771 | FD_SET(fd, eset); | |
772 | } | |
3d8df260 SK |
773 | } |
774 | ||
5aabfc78 | 775 | void check_dbus_listeners(fd_set *rset, fd_set *wset, fd_set *eset) |
3d8df260 SK |
776 | { |
777 | DBusConnection *connection = (DBusConnection *)daemon->dbus; | |
778 | struct watch *w; | |
779 | ||
780 | for (w = daemon->watches; w; w = w->next) | |
781 | if (dbus_watch_get_enabled(w->watch)) | |
782 | { | |
783 | unsigned int flags = 0; | |
824af85b | 784 | int fd = dbus_watch_get_unix_fd(w->watch); |
3d8df260 SK |
785 | |
786 | if (FD_ISSET(fd, rset)) | |
787 | flags |= DBUS_WATCH_READABLE; | |
788 | ||
789 | if (FD_ISSET(fd, wset)) | |
790 | flags |= DBUS_WATCH_WRITABLE; | |
791 | ||
792 | if (FD_ISSET(fd, eset)) | |
793 | flags |= DBUS_WATCH_ERROR; | |
794 | ||
795 | if (flags != 0) | |
796 | dbus_watch_handle(w->watch, flags); | |
797 | } | |
798 | ||
799 | if (connection) | |
800 | { | |
801 | dbus_connection_ref (connection); | |
802 | while (dbus_connection_dispatch (connection) == DBUS_DISPATCH_DATA_REMAINS); | |
803 | dbus_connection_unref (connection); | |
804 | } | |
805 | } | |
806 | ||
316e2730 | 807 | #ifdef HAVE_DHCP |
1f15b81d | 808 | void emit_dbus_signal(int action, struct dhcp_lease *lease, char *hostname) |
9009d746 SK |
809 | { |
810 | DBusConnection *connection = (DBusConnection *)daemon->dbus; | |
811 | DBusMessage* message = NULL; | |
812 | DBusMessageIter args; | |
6ffeff86 | 813 | char *action_str, *mac = daemon->namebuff; |
1f15b81d SK |
814 | unsigned char *p; |
815 | int i; | |
9009d746 SK |
816 | |
817 | if (!connection) | |
818 | return; | |
1f15b81d SK |
819 | |
820 | if (!hostname) | |
821 | hostname = ""; | |
822 | ||
6ffeff86 SK |
823 | #ifdef HAVE_DHCP6 |
824 | if (lease->flags & (LEASE_TA | LEASE_NA)) | |
825 | { | |
826 | print_mac(mac, lease->clid, lease->clid_len); | |
2bb6f773 | 827 | inet_ntop(AF_INET6, &lease->addr6, daemon->addrbuff, ADDRSTRLEN); |
6ffeff86 SK |
828 | } |
829 | else | |
830 | #endif | |
831 | { | |
832 | p = extended_hwaddr(lease->hwaddr_type, lease->hwaddr_len, | |
833 | lease->hwaddr, lease->clid_len, lease->clid, &i); | |
834 | print_mac(mac, p, i); | |
835 | inet_ntop(AF_INET, &lease->addr, daemon->addrbuff, ADDRSTRLEN); | |
836 | } | |
837 | ||
9009d746 SK |
838 | if (action == ACTION_DEL) |
839 | action_str = "DhcpLeaseDeleted"; | |
840 | else if (action == ACTION_ADD) | |
841 | action_str = "DhcpLeaseAdded"; | |
842 | else if (action == ACTION_OLD) | |
843 | action_str = "DhcpLeaseUpdated"; | |
844 | else | |
845 | return; | |
846 | ||
ad094275 | 847 | if (!(message = dbus_message_new_signal(DNSMASQ_PATH, daemon->dbus_name, action_str))) |
9009d746 SK |
848 | return; |
849 | ||
850 | dbus_message_iter_init_append(message, &args); | |
6ffeff86 SK |
851 | |
852 | if (dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING, &daemon->addrbuff) && | |
9009d746 SK |
853 | dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING, &mac) && |
854 | dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING, &hostname)) | |
855 | dbus_connection_send(connection, message, NULL); | |
856 | ||
857 | dbus_message_unref(message); | |
858 | } | |
316e2730 | 859 | #endif |
9009d746 | 860 | |
3d8df260 | 861 | #endif |