git.meshlink.io Git - catta/blob - avahi-discover-standalone/main.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of avahi.
   5
   6   avahi is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as
   8   published by the Free Software Foundation; either version 2.1 of the
   9   License, or (at your option) any later version.
  10
  11   avahi is distributed in the hope that it will be useful, but WITHOUT
  12   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13   or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
  14   Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public
  17   License along with avahi; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <sys/ioctl.h>
  27 #include <string.h>
  28 #include <sys/types.h>
  29 #include <sys/socket.h>
  30 #include <net/if.h>
  31 #include <unistd.h>
  32
  33 #include <gtk/gtk.h>
  34 #include <glade/glade.h>
  35
  36 #include <avahi-core/core.h>
  37 #include <avahi-core/lookup.h>
  38
  39 #include <avahi-common/strlst.h>
  40 #include <avahi-common/domain.h>
  41 #include <avahi-common/error.h>
  42
  43 #include <avahi-glib/glib-watch.h>
  44 #include <avahi-glib/glib-malloc.h>
  45
  46 struct ServiceType;
  47
  48 struct Service {
  49     struct ServiceType *service_type;
  50     gchar *service_name;
  51     gchar *domain_name;
  52
  53     AvahiIfIndex interface;
  54     AvahiProtocol protocol;
  55
  56     GtkTreeRowReference *tree_ref;
  57 };
  58
  59 struct ServiceType {
  60     gchar *service_type;
  61     AvahiSServiceBrowser *browser;
  62
  63     GList *services;
  64     GtkTreeRowReference *tree_ref;
  65 };
  66
  67 static GtkWidget *main_window = NULL;
  68 static GtkTreeView *tree_view = NULL;
  69 static GtkTreeStore *tree_store = NULL;
  70 static GtkLabel *info_label = NULL;
  71 static AvahiServer *server = NULL;
  72 static AvahiSServiceTypeBrowser *service_type_browser = NULL;
  73 static GHashTable *service_type_hash_table = NULL;
  74 static AvahiSServiceResolver *service_resolver = NULL;
  75 static struct Service *current_service = NULL;
  76
  77 static struct Service *get_service(const gchar *service_type, const gchar *service_name, const gchar*domain_name, AvahiIfIndex interface, AvahiProtocol protocol) {
  78     struct ServiceType *st;
  79     GList *l;
  80
  81     if (!(st = g_hash_table_lookup(service_type_hash_table, service_type)))
  82         return NULL;
  83
  84     for (l = st->services; l; l = l->next) {
  85         struct Service *s = l->data;
  86
  87         if (s->interface == interface &&
  88             s->protocol == protocol &&
  89             avahi_domain_equal(s->service_name, service_name) &&
  90             avahi_domain_equal(s->domain_name, domain_name))
  91             return s;
  92     }
  93
  94     return NULL;
  95 }
  96
  97 static void free_service(struct Service *s) {
  98     GtkTreeIter iter;
  99     GtkTreePath *path;
 100
 101     if (current_service == s) {
 102         current_service = NULL;
 103
 104         if (service_resolver) {
 105             avahi_s_service_resolver_free(service_resolver);
 106             service_resolver = NULL;
 107         }
 108
 109         gtk_label_set_text(info_label, "<i>Service removed</i>");
 110     }
 111
 112     s->service_type->services = g_list_remove(s->service_type->services, s);
 113
 114     if ((path = gtk_tree_row_reference_get_path(s->tree_ref))) {
 115         gtk_tree_model_get_iter(GTK_TREE_MODEL(tree_store), &iter, path);
 116         gtk_tree_path_free(path);
 117     }
 118
 119     gtk_tree_store_remove(tree_store, &iter);
 120
 121     gtk_tree_row_reference_free(s->tree_ref);
 122
 123     g_free(s->service_name);
 124     g_free(s->domain_name);
 125     g_free(s);
 126 }
 127
 128 static void service_browser_callback(
 129     AVAHI_GCC_UNUSED AvahiSServiceBrowser *b,
 130     AvahiIfIndex interface,
 131     AvahiProtocol protocol,
 132     AvahiBrowserEvent event,
 133     const char *service_name,
 134     const char *service_type,
 135     const char *domain_name,
 136     AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
 137     AVAHI_GCC_UNUSED void* userdata) {
 138
 139     if (event == AVAHI_BROWSER_NEW) {
 140         struct Service *s;
 141         GtkTreeIter iter, piter;
 142         GtkTreePath *path, *ppath;
 143         gchar iface[256];
 144         char name[IF_NAMESIZE];
 145
 146         s = g_new(struct Service, 1);
 147         s->service_name = g_strdup(service_name);
 148         s->domain_name = g_strdup(domain_name);
 149         s->interface = interface;
 150         s->protocol = protocol;
 151         s->service_type = g_hash_table_lookup(service_type_hash_table, service_type);
 152         g_assert(s->service_type);
 153
 154         s->service_type->services = g_list_prepend(s->service_type->services, s);
 155
 156         ppath = gtk_tree_row_reference_get_path(s->service_type->tree_ref);
 157         gtk_tree_model_get_iter(GTK_TREE_MODEL(tree_store), &piter, ppath);
 158
 159         snprintf(iface, sizeof(iface), "%s %s", if_indextoname(interface, name), avahi_proto_to_string(protocol));
 160
 161         gtk_tree_store_append(tree_store, &iter, &piter);
 162         gtk_tree_store_set(tree_store, &iter, 0, s->service_name, 1, iface, 2, s, -1);
 163
 164         path = gtk_tree_model_get_path(GTK_TREE_MODEL(tree_store), &iter);
 165         s->tree_ref = gtk_tree_row_reference_new(GTK_TREE_MODEL(tree_store), path);
 166         gtk_tree_path_free(path);
 167
 168         gtk_tree_view_expand_row(tree_view, ppath, FALSE);
 169         gtk_tree_path_free(ppath);
 170
 171
 172     } else if (event == AVAHI_BROWSER_REMOVE) {
 173         struct Service* s;
 174
 175         if ((s = get_service(service_type, service_name, domain_name, interface, protocol)))
 176             free_service(s);
 177     }
 178 }
 179
 180 static void service_type_browser_callback(
 181     AVAHI_GCC_UNUSED AvahiSServiceTypeBrowser *b,
 182     AVAHI_GCC_UNUSED AvahiIfIndex interface,
 183     AVAHI_GCC_UNUSED AvahiProtocol protocol,
 184     AvahiBrowserEvent event,
 185     const char *service_type,
 186     const char *domain,
 187     AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
 188     AVAHI_GCC_UNUSED void * userdata) {
 189
 190     struct ServiceType *st;
 191     GtkTreePath *path;
 192     GtkTreeIter iter;
 193
 194     if (event != AVAHI_BROWSER_NEW)
 195         return;
 196
 197     if (g_hash_table_lookup(service_type_hash_table, service_type))
 198         return;
 199
 200     st = g_new(struct ServiceType, 1);
 201     st->service_type = g_strdup(service_type);
 202     st->services = NULL;
 203
 204     gtk_tree_store_append(tree_store, &iter, NULL);
 205     gtk_tree_store_set(tree_store, &iter, 0, st->service_type, 1, "", 2, NULL, -1);
 206
 207     path = gtk_tree_model_get_path(GTK_TREE_MODEL(tree_store), &iter);
 208     st->tree_ref = gtk_tree_row_reference_new(GTK_TREE_MODEL(tree_store), path);
 209     gtk_tree_path_free(path);
 210
 211     g_hash_table_insert(service_type_hash_table, st->service_type, st);
 212
 213     st->browser = avahi_s_service_browser_new(server, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, st->service_type, domain, 0, service_browser_callback, NULL);
 214 }
 215
 216 static void update_label(struct Service *s, const gchar *hostname, const AvahiAddress *a, guint16 port, AvahiStringList *txt) {
 217     gchar t[512], address[64], *txt_s;
 218     char name[IF_NAMESIZE];
 219
 220     if (a && hostname) {
 221         char na[AVAHI_ADDRESS_STR_MAX];
 222         avahi_address_snprint(na, sizeof(na), a);
 223         snprintf(address, sizeof(address), "%s/%s:%u", hostname, na, port);
 224
 225         if (txt)
 226             txt_s = avahi_string_list_to_string(txt);
 227         else
 228             txt_s = g_strdup("<i>empty</i>");
 229     } else {
 230         snprintf(address, sizeof(address), "<i>n/a</i>");
 231         txt_s = g_strdup("<i>n/a</i>");
 232     }
 233
 234     snprintf(t, sizeof(t),
 235              "<b>Service Type:</b> %s\n"
 236              "<b>Service Name:</b> %s\n"
 237              "<b>Domain Name:</b> %s\n"
 238              "<b>Interface:</b> %s %s\n"
 239              "<b>Address:</b> %s\n"
 240              "<b>TXT Data:</b> %s",
 241              s->service_type->service_type,
 242              s->service_name,
 243              s->domain_name,
 244              if_indextoname(s->interface,name), avahi_proto_to_string(s->protocol),
 245              address,
 246              txt_s);
 247
 248     gtk_label_set_markup(info_label, t);
 249
 250     g_free(txt_s);
 251 }
 252
 253 static struct Service *get_service_on_cursor(void) {
 254     GtkTreePath *path;
 255     struct Service *s;
 256     GtkTreeIter iter;
 257
 258     gtk_tree_view_get_cursor(tree_view, &path, NULL);
 259
 260     if (!path)
 261         return NULL;
 262
 263     gtk_tree_model_get_iter(GTK_TREE_MODEL(tree_store), &iter, path);
 264     gtk_tree_model_get(GTK_TREE_MODEL(tree_store), &iter, 2, &s, -1);
 265     gtk_tree_path_free(path);
 266
 267     return s;
 268 }
 269
 270 static void service_resolver_callback(
 271     AvahiSServiceResolver *r,
 272     AVAHI_GCC_UNUSED AvahiIfIndex interface,
 273     AVAHI_GCC_UNUSED AvahiProtocol protocol,
 274     AvahiResolverEvent event,
 275     AVAHI_GCC_UNUSED const char *name,
 276     AVAHI_GCC_UNUSED const char *type,
 277     AVAHI_GCC_UNUSED const char *domain,
 278     const char *host_name,
 279     const AvahiAddress *a,
 280     uint16_t port,
 281     AvahiStringList *txt,
 282     AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
 283     void* userdata) {
 284
 285     struct Service *s;
 286     g_assert(r);
 287
 288     if (!(s = get_service_on_cursor()) || userdata != s) {
 289         g_assert(r == service_resolver);
 290         avahi_s_service_resolver_free(service_resolver);
 291         service_resolver = NULL;
 292         return;
 293     }
 294
 295     if (event == AVAHI_RESOLVER_FAILURE) {
 296         char t[256];
 297         snprintf(t, sizeof(t), "<i>Failed to resolve: %s.</i>", avahi_strerror(avahi_server_errno(server)));
 298         gtk_label_set_markup(info_label, t);
 299     } else if (event == AVAHI_RESOLVER_FOUND)
 300         update_label(s, host_name, a, port, txt);
 301 }
 302
 303 static void tree_view_on_cursor_changed(AVAHI_GCC_UNUSED GtkTreeView *tv, AVAHI_GCC_UNUSED gpointer userdata) {
 304     struct Service *s;
 305
 306     if (!(s = get_service_on_cursor()))
 307         return;
 308
 309     if (service_resolver)
 310         avahi_s_service_resolver_free(service_resolver);
 311
 312     update_label(s, NULL, NULL, 0, NULL);
 313
 314     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);
 315 }
 316
 317 static gboolean main_window_on_delete_event(AVAHI_GCC_UNUSED GtkWidget *widget, AVAHI_GCC_UNUSED GdkEvent *event, AVAHI_GCC_UNUSED gpointer user_data) {
 318     gtk_main_quit();
 319     return FALSE;
 320 }
 321
 322 int main(int argc, char *argv[]) {
 323     GladeXML *xml;
 324     AvahiServerConfig config;
 325     GtkTreeViewColumn *c;
 326     gint error;
 327     AvahiGLibPoll *poll_api;
 328
 329     gtk_init(&argc, &argv);
 330     glade_init();
 331
 332     avahi_set_allocator(avahi_glib_allocator());
 333
 334     poll_api = avahi_glib_poll_new(NULL, G_PRIORITY_DEFAULT);
 335
 336     xml = glade_xml_new(AVAHI_INTERFACES_DIR"avahi-discover.glade", NULL, NULL);
 337     main_window = glade_xml_get_widget(xml, "main_window");
 338     g_signal_connect(main_window, "delete-event", (GCallback) main_window_on_delete_event, NULL);
 339
 340     tree_view = GTK_TREE_VIEW(glade_xml_get_widget(xml, "tree_view"));
 341     g_signal_connect(GTK_WIDGET(tree_view), "cursor-changed", (GCallback) tree_view_on_cursor_changed, NULL);
 342
 343     info_label = GTK_LABEL(glade_xml_get_widget(xml, "info_label"));
 344
 345     tree_store = gtk_tree_store_new(3, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_POINTER);
 346     gtk_tree_view_set_model(tree_view, GTK_TREE_MODEL(tree_store));
 347     gtk_tree_view_insert_column_with_attributes(tree_view, -1, "Name", gtk_cell_renderer_text_new(), "text", 0, NULL);
 348     gtk_tree_view_insert_column_with_attributes(tree_view, -1, "Interface", gtk_cell_renderer_text_new(), "text", 1, NULL);
 349
 350     gtk_tree_view_column_set_resizable(c = gtk_tree_view_get_column(tree_view, 0), TRUE);
 351     gtk_tree_view_column_set_sizing(c, GTK_TREE_VIEW_COLUMN_GROW_ONLY);
 352     gtk_tree_view_column_set_expand(c, TRUE);
 353
 354     service_type_hash_table = g_hash_table_new((GHashFunc) avahi_domain_hash, (GEqualFunc) avahi_domain_equal);
 355
 356     avahi_server_config_init(&config);
 357     config.publish_hinfo = config.publish_addresses = config.publish_domain = config.publish_workstation = FALSE;
 358     server = avahi_server_new(avahi_glib_poll_get(poll_api), &config, NULL, NULL, &error);
 359     avahi_server_config_free(&config);
 360
 361     g_assert(server);
 362
 363     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);
 364
 365     gtk_main();
 366
 367     avahi_server_free(server);
 368     avahi_glib_poll_free(poll_api);
 369
 370     return 0;
 371 }