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 <net/if.h>
  29 #include <unistd.h>
  30
  31 #include <gtk/gtk.h>
  32 #include <glade/glade.h>
  33 #include <avahi-core/core.h>
  34 #include <avahi-common/strlst.h>
  35 #include <avahi-common/domain.h>
  36 #include <avahi-glib/glib-watch.h>
  37 #include <avahi-glib/glib-malloc.h>
  38
  39 struct ServiceType;
  40
  41 struct Service {
  42     struct ServiceType *service_type;
  43     gchar *service_name;
  44     gchar *domain_name;
  45
  46     AvahiIfIndex interface;
  47     AvahiProtocol protocol;
  48
  49     GtkTreeRowReference *tree_ref;
  50 };
  51
  52 struct ServiceType {
  53     gchar *service_type;
  54     AvahiSServiceBrowser *browser;
  55
  56     GList *services;
  57     GtkTreeRowReference *tree_ref;
  58 };
  59
  60 static GtkWidget *main_window = NULL;
  61 static GtkTreeView *tree_view = NULL;
  62 static GtkTreeStore *tree_store = NULL;
  63 static GtkLabel *info_label = NULL;
  64 static AvahiServer *server = NULL;
  65 static AvahiSServiceTypeBrowser *service_type_browser = NULL;
  66 static GHashTable *service_type_hash_table = NULL;
  67 static AvahiSServiceResolver *service_resolver = NULL;
  68 static struct Service *current_service = NULL;
  69
  70 static const char* getifname(int idx) {
  71     static char t[256];
  72     static struct ifreq ifreq;
  73     int fd = -1;
  74
  75     memset(&ifreq, 0, sizeof(ifreq));
  76
  77     if ((fd = socket(PF_INET, SOCK_DGRAM, 0)) < 0)
  78         if ((fd = socket(PF_INET6, SOCK_DGRAM, 0)) < 0)
  79             goto fail;
  80
  81     ifreq.ifr_ifindex = idx;
  82     if (ioctl(fd, SIOCGIFNAME, &ifreq) < 0)
  83         goto fail;
  84
  85     close(fd);
  86
  87     return ifreq.ifr_name;
  88
  89
  90 fail:
  91     if (fd >= 0)
  92         close(fd);
  93
  94     snprintf(t, sizeof(t), "#%i", idx);
  95     return t;
  96 }
  97
  98 static struct Service *get_service(const gchar *service_type, const gchar *service_name, const gchar*domain_name, AvahiIfIndex interface, AvahiProtocol protocol) {
  99     struct ServiceType *st;
 100     GList *l;
 101
 102     if (!(st = g_hash_table_lookup(service_type_hash_table, service_type)))
 103         return NULL;
 104
 105     for (l = st->services; l; l = l->next) {
 106         struct Service *s = l->data;
 107
 108         if (s->interface == interface &&
 109             s->protocol == protocol &&
 110             avahi_domain_equal(s->service_name, service_name) &&
 111             avahi_domain_equal(s->domain_name, domain_name))
 112             return s;
 113     }
 114
 115     return NULL;
 116 }
 117
 118 static void free_service(struct Service *s) {
 119     GtkTreeIter iter;
 120     GtkTreePath *path;
 121
 122     if (current_service == s) {
 123         current_service = NULL;
 124
 125         if (service_resolver) {
 126             avahi_s_service_resolver_free(service_resolver);
 127             service_resolver = NULL;
 128         }
 129
 130         gtk_label_set_text(info_label, "<i>Service removed</i>");
 131     }
 132
 133     s->service_type->services = g_list_remove(s->service_type->services, s);
 134
 135     path = gtk_tree_row_reference_get_path(s->tree_ref);
 136     gtk_tree_model_get_iter(GTK_TREE_MODEL(tree_store), &iter, path);
 137     gtk_tree_path_free(path);
 138
 139     gtk_tree_store_remove(tree_store, &iter);
 140
 141     gtk_tree_row_reference_free(s->tree_ref);
 142
 143     g_free(s->service_name);
 144     g_free(s->domain_name);
 145     g_free(s);
 146 }
 147
 148 static void service_browser_callback(AvahiSServiceBrowser *b, AvahiIfIndex interface, AvahiProtocol protocol, AvahiBrowserEvent event, const gchar *service_name, const gchar *service_type, const gchar *domain_name, gpointer userdata) {
 149
 150     if (event == AVAHI_BROWSER_NEW) {
 151         struct Service *s;
 152         GtkTreeIter iter, piter;
 153         GtkTreePath *path, *ppath;
 154         gchar iface[256];
 155
 156         s = g_new(struct Service, 1);
 157         s->service_name = g_strdup(service_name);
 158         s->domain_name = g_strdup(domain_name);
 159         s->interface = interface;
 160         s->protocol = protocol;
 161         s->service_type = g_hash_table_lookup(service_type_hash_table, service_type);
 162         g_assert(s->service_type);
 163
 164         s->service_type->services = g_list_prepend(s->service_type->services, s);
 165
 166         ppath = gtk_tree_row_reference_get_path(s->service_type->tree_ref);
 167         gtk_tree_model_get_iter(GTK_TREE_MODEL(tree_store), &piter, ppath);
 168
 169         snprintf(iface, sizeof(iface), "%s %s", getifname(interface), protocol == AF_INET ? "IPv4" : "IPv6");
 170
 171         gtk_tree_store_append(tree_store, &iter, &piter);
 172         gtk_tree_store_set(tree_store, &iter, 0, s->service_name, 1, iface, 2, s, -1);
 173
 174         path = gtk_tree_model_get_path(GTK_TREE_MODEL(tree_store), &iter);
 175         s->tree_ref = gtk_tree_row_reference_new(GTK_TREE_MODEL(tree_store), path);
 176         gtk_tree_path_free(path);
 177
 178         gtk_tree_view_expand_row(tree_view, ppath, FALSE);
 179         gtk_tree_path_free(ppath);
 180
 181
 182     } else if (event == AVAHI_BROWSER_REMOVE) {
 183         struct Service* s;
 184
 185         if ((s = get_service(service_type, service_name, domain_name, interface, protocol)))
 186             free_service(s);
 187     }
 188 }
 189
 190 static void service_type_browser_callback(AvahiSServiceTypeBrowser *b, AvahiIfIndex interface, AvahiProtocol protocol, AvahiBrowserEvent event, const gchar *service_type, const gchar *domain, gpointer userdata) {
 191     struct ServiceType *st;
 192     GtkTreePath *path;
 193     GtkTreeIter iter;
 194
 195     if (event != AVAHI_BROWSER_NEW)
 196         return;
 197
 198     if (g_hash_table_lookup(service_type_hash_table, service_type))
 199         return;
 200
 201     st = g_new(struct ServiceType, 1);
 202     st->service_type = g_strdup(service_type);
 203     st->services = NULL;
 204
 205     gtk_tree_store_append(tree_store, &iter, NULL);
 206     gtk_tree_store_set(tree_store, &iter, 0, st->service_type, 1, "", 2, NULL, -1);
 207
 208     path = gtk_tree_model_get_path(GTK_TREE_MODEL(tree_store), &iter);
 209     st->tree_ref = gtk_tree_row_reference_new(GTK_TREE_MODEL(tree_store), path);
 210     gtk_tree_path_free(path);
 211
 212     g_hash_table_insert(service_type_hash_table, st->service_type, st);
 213
 214     st->browser = avahi_s_service_browser_new(server, -1, AF_UNSPEC, st->service_type, domain, service_browser_callback, NULL);
 215 }
 216
 217 static void update_label(struct Service *s, const gchar *hostname, const AvahiAddress *a, guint16 port, AvahiStringList *txt) {
 218     gchar t[512], address[64], *txt_s;
 219
 220     if (a && hostname) {
 221         char na[256];
 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              getifname(s->interface), s->protocol == AF_INET ? "IPv4" : "IPv6",
 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     gtk_tree_model_get_iter(GTK_TREE_MODEL(tree_store), &iter, path);
 260     gtk_tree_model_get(GTK_TREE_MODEL(tree_store), &iter, 2, &s, -1);
 261     gtk_tree_path_free(path);
 262
 263     return s;
 264 }
 265
 266
 267 static void service_resolver_callback(AvahiSServiceResolver *r, AvahiIfIndex interface, AvahiProtocol protocol, AvahiResolverEvent event, const gchar *name, const gchar *type, const gchar *domain, const gchar *host_name, const AvahiAddress *a, guint16 port, AvahiStringList *txt, gpointer userdata) {
 268     struct Service *s;
 269     g_assert(r);
 270
 271     if (!(s = get_service_on_cursor()) || userdata != s) {
 272         g_assert(r == service_resolver);
 273         avahi_s_service_resolver_free(service_resolver);
 274         service_resolver = NULL;
 275         return;
 276     }
 277
 278     if (event == AVAHI_RESOLVER_TIMEOUT)
 279         gtk_label_set_markup(info_label, "<i>Failed to resolve.</i>");
 280     else
 281         update_label(s, host_name, a, port, txt);
 282 }
 283
 284 static void tree_view_on_cursor_changed(GtkTreeView *tv, gpointer userdata) {
 285     struct Service *s;
 286
 287     if (!(s = get_service_on_cursor()))
 288         return;
 289
 290     if (service_resolver)
 291         avahi_s_service_resolver_free(service_resolver);
 292
 293     update_label(s, NULL, NULL, 0, NULL);
 294
 295     service_resolver = avahi_s_service_resolver_new(server, s->interface, s->protocol, s->service_name, s->service_type->service_type, s->domain_name, AF_UNSPEC, service_resolver_callback, s);
 296 }
 297
 298 static gboolean main_window_on_delete_event(GtkWidget *widget, GdkEvent *event, gpointer user_data) {
 299     gtk_main_quit();
 300     return FALSE;
 301 }
 302
 303 int main(int argc, char *argv[]) {
 304     GladeXML *xml;
 305     AvahiServerConfig config;
 306     GtkTreeViewColumn *c;
 307     gint error;
 308     AvahiGLibPoll *poll_api;
 309
 310     gtk_init(&argc, &argv);
 311     glade_init();
 312
 313     avahi_set_allocator(avahi_glib_allocator());
 314
 315     poll_api = avahi_glib_poll_new(NULL, G_PRIORITY_DEFAULT);
 316
 317     xml = glade_xml_new(AVAHI_INTERFACES_DIR"avahi-discover.glade", NULL, NULL);
 318     main_window = glade_xml_get_widget(xml, "main_window");
 319     g_signal_connect(main_window, "delete-event", (GCallback) main_window_on_delete_event, NULL);
 320
 321     tree_view = GTK_TREE_VIEW(glade_xml_get_widget(xml, "tree_view"));
 322     g_signal_connect(GTK_WIDGET(tree_view), "cursor-changed", (GCallback) tree_view_on_cursor_changed, NULL);
 323
 324     info_label = GTK_LABEL(glade_xml_get_widget(xml, "info_label"));
 325
 326     tree_store = gtk_tree_store_new(3, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_POINTER);
 327     gtk_tree_view_set_model(tree_view, GTK_TREE_MODEL(tree_store));
 328     gtk_tree_view_insert_column_with_attributes(tree_view, -1, "Name", gtk_cell_renderer_text_new(), "text", 0, NULL);
 329     gtk_tree_view_insert_column_with_attributes(tree_view, -1, "Interface", gtk_cell_renderer_text_new(), "text", 1, NULL);
 330
 331     gtk_tree_view_column_set_resizable(c = gtk_tree_view_get_column(tree_view, 0), TRUE);
 332     gtk_tree_view_column_set_sizing(c, GTK_TREE_VIEW_COLUMN_GROW_ONLY);
 333     gtk_tree_view_column_set_expand(c, TRUE);
 334
 335     service_type_hash_table = g_hash_table_new((GHashFunc) avahi_domain_hash, (GEqualFunc) avahi_domain_equal);
 336
 337     avahi_server_config_init(&config);
 338     config.publish_hinfo = config.publish_addresses = config.publish_domain = config.publish_workstation = FALSE;
 339     server = avahi_server_new(avahi_glib_poll_get(poll_api), &config, NULL, NULL, &error);
 340     avahi_server_config_free(&config);
 341
 342     g_assert(server);
 343
 344     service_type_browser = avahi_s_service_type_browser_new(server, -1, AF_UNSPEC, argc >= 2 ? argv[1] : NULL, service_type_browser_callback, NULL);
 345
 346     gtk_main();
 347
 348     avahi_server_free(server);
 349     avahi_glib_poll_free(poll_api);
 350
 351     return 0;
 352 }