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

   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 }