1 /*** 2 This file is part of avahi. 3 4 avahi is free software; you can redistribute it and/or modify it 5 under the terms of the GNU Lesser General Public License as 6 published by the Free Software Foundation; either version 2.1 of the 7 License, or (at your option) any later version. 8 9 avahi is distributed in the hope that it will be useful, but WITHOUT 10 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 11 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General 12 Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with avahi; if not, write to the Free Software 16 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 17 USA. 18 ***/ 19 20 #ifdef HAVE_CONFIG_H 21 #include <config.h> 22 #endif 23 24 #include <sys/ioctl.h> 25 #include <string.h> 26 #include <sys/types.h> 27 #include <sys/socket.h> 28 #include <net/if.h> 29 #include <unistd.h> 30 31 #include <gtk/gtk.h> 32 33 #include <avahi-core/core.h> 34 #include <avahi-core/lookup.h> 35 36 #include <avahi-common/strlst.h> 37 #include <avahi-common/domain.h> 38 #include <avahi-common/error.h> 39 40 #include <avahi-glib/glib-watch.h> 41 #include <avahi-glib/glib-malloc.h> 42 43 struct ServiceType; 44 45 struct Service { 46 struct ServiceType *service_type; 47 gchar *service_name; 48 gchar *domain_name; 49 50 AvahiIfIndex interface; 51 AvahiProtocol protocol; 52 53 GtkTreeRowReference *tree_ref; 54 }; 55 56 struct ServiceType { 57 gchar *service_type; 58 AvahiSServiceBrowser *browser; 59 60 GList *services; 61 GtkTreeRowReference *tree_ref; 62 }; 63 64 static GtkWidget *main_window = NULL; 65 static GtkTreeView *tree_view = NULL; 66 static GtkTreeStore *tree_store = NULL; 67 static GtkLabel *info_label = NULL; 68 static AvahiServer *server = NULL; 69 static AvahiSServiceTypeBrowser *service_type_browser = NULL; 70 static GHashTable *service_type_hash_table = NULL; 71 static AvahiSServiceResolver *service_resolver = NULL; 72 static struct Service *current_service = NULL; 73 74 static struct Service *get_service(const gchar *service_type, const gchar *service_name, const gchar*domain_name, AvahiIfIndex interface, AvahiProtocol protocol) { 75 struct ServiceType *st; 76 GList *l; 77 78 if (!(st = g_hash_table_lookup(service_type_hash_table, service_type))) 79 return NULL; 80 81 for (l = st->services; l; l = l->next) { 82 struct Service *s = l->data; 83 84 if (s->interface == interface && 85 s->protocol == protocol && 86 avahi_domain_equal(s->service_name, service_name) && 87 avahi_domain_equal(s->domain_name, domain_name)) 88 return s; 89 } 90 91 return NULL; 92 } 93 94 static void free_service(struct Service *s) { 95 GtkTreeIter iter; 96 GtkTreePath *path; 97 98 if (current_service == s) { 99 current_service = NULL; 100 101 if (service_resolver) { 102 avahi_s_service_resolver_free(service_resolver); 103 service_resolver = NULL; 104 } 105 106 gtk_label_set_text(info_label, "<i>Service removed</i>"); 107 } 108 109 s->service_type->services = g_list_remove(s->service_type->services, s); 110 111 if ((path = gtk_tree_row_reference_get_path(s->tree_ref))) { 112 gtk_tree_model_get_iter(GTK_TREE_MODEL(tree_store), &iter, path); 113 gtk_tree_path_free(path); 114 } 115 116 gtk_tree_store_remove(tree_store, &iter); 117 118 gtk_tree_row_reference_free(s->tree_ref); 119 120 g_free(s->service_name); 121 g_free(s->domain_name); 122 g_free(s); 123 } 124 125 static void service_browser_callback( 126 AVAHI_GCC_UNUSED AvahiSServiceBrowser *b, 127 AvahiIfIndex interface, 128 AvahiProtocol protocol, 129 AvahiBrowserEvent event, 130 const char *service_name, 131 const char *service_type, 132 const char *domain_name, 133 AVAHI_GCC_UNUSED AvahiLookupResultFlags flags, 134 AVAHI_GCC_UNUSED void* userdata) { 135 136 if (event == AVAHI_BROWSER_NEW) { 137 struct Service *s; 138 GtkTreeIter iter, piter; 139 GtkTreePath *path, *ppath; 140 gchar iface[256]; 141 char name[IF_NAMESIZE]; 142 143 s = g_new(struct Service, 1); 144 s->service_name = g_strdup(service_name); 145 s->domain_name = g_strdup(domain_name); 146 s->interface = interface; 147 s->protocol = protocol; 148 s->service_type = g_hash_table_lookup(service_type_hash_table, service_type); 149 g_assert(s->service_type); 150 151 s->service_type->services = g_list_prepend(s->service_type->services, s); 152 153 ppath = gtk_tree_row_reference_get_path(s->service_type->tree_ref); 154 gtk_tree_model_get_iter(GTK_TREE_MODEL(tree_store), &piter, ppath); 155 156 snprintf(iface, sizeof(iface), "%s %s", if_indextoname(interface, name), avahi_proto_to_string(protocol)); 157 158 gtk_tree_store_append(tree_store, &iter, &piter); 159 gtk_tree_store_set(tree_store, &iter, 0, s->service_name, 1, iface, 2, s, -1); 160 161 path = gtk_tree_model_get_path(GTK_TREE_MODEL(tree_store), &iter); 162 s->tree_ref = gtk_tree_row_reference_new(GTK_TREE_MODEL(tree_store), path); 163 gtk_tree_path_free(path); 164 165 gtk_tree_view_expand_row(tree_view, ppath, FALSE); 166 gtk_tree_path_free(ppath); 167 168 169 } else if (event == AVAHI_BROWSER_REMOVE) { 170 struct Service* s; 171 172 if ((s = get_service(service_type, service_name, domain_name, interface, protocol))) 173 free_service(s); 174 } 175 } 176 177 static void service_type_browser_callback( 178 AVAHI_GCC_UNUSED AvahiSServiceTypeBrowser *b, 179 AVAHI_GCC_UNUSED AvahiIfIndex interface, 180 AVAHI_GCC_UNUSED AvahiProtocol protocol, 181 AvahiBrowserEvent event, 182 const char *service_type, 183 const char *domain, 184 AVAHI_GCC_UNUSED AvahiLookupResultFlags flags, 185 AVAHI_GCC_UNUSED void * userdata) { 186 187 struct ServiceType *st; 188 GtkTreePath *path; 189 GtkTreeIter iter; 190 191 if (event != AVAHI_BROWSER_NEW) 192 return; 193 194 if (g_hash_table_lookup(service_type_hash_table, service_type)) 195 return; 196 197 st = g_new(struct ServiceType, 1); 198 st->service_type = g_strdup(service_type); 199 st->services = NULL; 200 201 gtk_tree_store_append(tree_store, &iter, NULL); 202 gtk_tree_store_set(tree_store, &iter, 0, st->service_type, 1, "", 2, NULL, -1); 203 204 path = gtk_tree_model_get_path(GTK_TREE_MODEL(tree_store), &iter); 205 st->tree_ref = gtk_tree_row_reference_new(GTK_TREE_MODEL(tree_store), path); 206 gtk_tree_path_free(path); 207 208 g_hash_table_insert(service_type_hash_table, st->service_type, st); 209 210 st->browser = avahi_s_service_browser_new(server, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, st->service_type, domain, 0, service_browser_callback, NULL); 211 } 212 213 static void update_label(struct Service *s, const gchar *hostname, const AvahiAddress *a, guint16 port, AvahiStringList *txt) { 214 gchar t[512], address[64], *txt_s; 215 char name[IF_NAMESIZE]; 216 217 if (a && hostname) { 218 char na[AVAHI_ADDRESS_STR_MAX]; 219 avahi_address_snprint(na, sizeof(na), a); 220 snprintf(address, sizeof(address), "%s/%s:%u", hostname, na, port); 221 222 if (txt) 223 txt_s = avahi_string_list_to_string(txt); 224 else 225 txt_s = g_strdup("<i>empty</i>"); 226 } else { 227 snprintf(address, sizeof(address), "<i>n/a</i>"); 228 txt_s = g_strdup("<i>n/a</i>"); 229 } 230 231 snprintf(t, sizeof(t), 232 "<b>Service Type:</b> %s\n" 233 "<b>Service Name:</b> %s\n" 234 "<b>Domain Name:</b> %s\n" 235 "<b>Interface:</b> %s %s\n" 236 "<b>Address:</b> %s\n" 237 "<b>TXT Data:</b> %s", 238 s->service_type->service_type, 239 s->service_name, 240 s->domain_name, 241 if_indextoname(s->interface,name), avahi_proto_to_string(s->protocol), 242 address, 243 txt_s); 244 245 gtk_label_set_markup(info_label, t); 246 247 g_free(txt_s); 248 } 249 250 static struct Service *get_service_on_cursor(void) { 251 GtkTreePath *path; 252 struct Service *s; 253 GtkTreeIter iter; 254 255 gtk_tree_view_get_cursor(tree_view, &path, NULL); 256 257 if (!path) 258 return NULL; 259 260 gtk_tree_model_get_iter(GTK_TREE_MODEL(tree_store), &iter, path); 261 gtk_tree_model_get(GTK_TREE_MODEL(tree_store), &iter, 2, &s, -1); 262 gtk_tree_path_free(path); 263 264 return s; 265 } 266 267 static void service_resolver_callback( 268 AvahiSServiceResolver *r, 269 AVAHI_GCC_UNUSED AvahiIfIndex interface, 270 AVAHI_GCC_UNUSED AvahiProtocol protocol, 271 AvahiResolverEvent event, 272 AVAHI_GCC_UNUSED const char *name, 273 AVAHI_GCC_UNUSED const char *type, 274 AVAHI_GCC_UNUSED const char *domain, 275 const char *host_name, 276 const AvahiAddress *a, 277 uint16_t port, 278 AvahiStringList *txt, 279 AVAHI_GCC_UNUSED AvahiLookupResultFlags flags, 280 void* userdata) { 281 282 struct Service *s; 283 g_assert(r); 284 285 if (!(s = get_service_on_cursor()) || userdata != s) { 286 g_assert(r == service_resolver); 287 avahi_s_service_resolver_free(service_resolver); 288 service_resolver = NULL; 289 return; 290 } 291 292 if (event == AVAHI_RESOLVER_FAILURE) { 293 char t[256]; 294 snprintf(t, sizeof(t), "<i>Failed to resolve: %s.</i>", avahi_strerror(avahi_server_errno(server))); 295 gtk_label_set_markup(info_label, t); 296 } else if (event == AVAHI_RESOLVER_FOUND) 297 update_label(s, host_name, a, port, txt); 298 } 299 300 static void tree_view_on_cursor_changed(AVAHI_GCC_UNUSED GtkTreeView *tv, AVAHI_GCC_UNUSED gpointer userdata) { 301 struct Service *s; 302 303 if (!(s = get_service_on_cursor())) 304 return; 305 306 if (service_resolver) 307 avahi_s_service_resolver_free(service_resolver); 308 309 update_label(s, NULL, NULL, 0, NULL); 310 311 service_resolver = avahi_s_service_resolver_new(server, s->interface, s->protocol, s->service_name, s->service_type->service_type, s->domain_name, AVAHI_PROTO_UNSPEC, 0, service_resolver_callback, s); 312 } 313 314 static gboolean main_window_on_delete_event(AVAHI_GCC_UNUSED GtkWidget *widget, AVAHI_GCC_UNUSED GdkEvent *event, AVAHI_GCC_UNUSED gpointer user_data) { 315 gtk_main_quit(); 316 return FALSE; 317 } 318 319 int main(int argc, char *argv[]) { 320 GtkBuilder *ui; 321 AvahiServerConfig config; 322 GtkTreeViewColumn *c; 323 gint error; 324 AvahiGLibPoll *poll_api; 325 326 gtk_init(&argc, &argv); 327 328 avahi_set_allocator(avahi_glib_allocator()); 329 330 poll_api = avahi_glib_poll_new(NULL, G_PRIORITY_DEFAULT); 331 332 ui = gtk_builder_new(); 333 gtk_builder_add_from_file(ui, AVAHI_INTERFACES_DIR"avahi-discover.ui", NULL); 334 main_window = GTK_WIDGET(gtk_builder_get_object(ui, "main_window")); 335 g_signal_connect(main_window, "delete-event", (GCallback) main_window_on_delete_event, NULL); 336 337 tree_view = GTK_TREE_VIEW(gtk_builder_get_object(ui, "tree_view")); 338 g_signal_connect(GTK_WIDGET(tree_view), "cursor-changed", (GCallback) tree_view_on_cursor_changed, NULL); 339 340 info_label = GTK_LABEL(gtk_builder_get_object(ui, "info_label")); 341 342 tree_store = gtk_tree_store_new(3, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_POINTER); 343 gtk_tree_view_set_model(tree_view, GTK_TREE_MODEL(tree_store)); 344 gtk_tree_view_insert_column_with_attributes(tree_view, -1, "Name", gtk_cell_renderer_text_new(), "text", 0, NULL); 345 gtk_tree_view_insert_column_with_attributes(tree_view, -1, "Interface", gtk_cell_renderer_text_new(), "text", 1, NULL); 346 347 gtk_tree_view_column_set_resizable(c = gtk_tree_view_get_column(tree_view, 0), TRUE); 348 gtk_tree_view_column_set_sizing(c, GTK_TREE_VIEW_COLUMN_GROW_ONLY); 349 gtk_tree_view_column_set_expand(c, TRUE); 350 351 service_type_hash_table = g_hash_table_new((GHashFunc) avahi_domain_hash, (GEqualFunc) avahi_domain_equal); 352 353 avahi_server_config_init(&config); 354 config.publish_hinfo = config.publish_addresses = config.publish_domain = config.publish_workstation = FALSE; 355 server = avahi_server_new(avahi_glib_poll_get(poll_api), &config, NULL, NULL, &error); 356 avahi_server_config_free(&config); 357 358 g_assert(server); 359 360 service_type_browser = avahi_s_service_type_browser_new(server, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, argc >= 2 ? argv[1] : NULL, 0, service_type_browser_callback, NULL); 361 362 gtk_main(); 363 364 avahi_server_free(server); 365 avahi_glib_poll_free(poll_api); 366 367 return 0; 368 } 369
