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
  34 #include <avahi-core/core.h>
  35 #include <avahi-core/lookup.h>
  36
  37 #include <avahi-common/strlst.h>
  38 #include <avahi-common/domain.h>
  39 #include <avahi-common/error.h>
  40
  41 #include <avahi-glib/glib-watch.h>
  42 #include <avahi-glib/glib-malloc.h>
  43
  44 struct ServiceType;
  45
  46 struct Service {
  47     struct ServiceType *service_type;
  48     gchar *service_name;
  49     gchar *domain_name;
  50
  51     AvahiIfIndex interface;
  52     AvahiProtocol protocol;
  53
  54     GtkTreeRowReference *tree_ref;
  55 };
  56
  57 struct ServiceType {
  58     gchar *service_type;
  59     AvahiSServiceBrowser *browser;
  60
  61     GList *services;
  62     GtkTreeRowReference *tree_ref;
  63 };
  64
  65 static GtkWidget *main_window = NULL;
  66 static GtkTreeView *tree_view = NULL;
  67 static GtkTreeStore *tree_store = NULL;
  68 static GtkLabel *info_label = NULL;
  69 static AvahiServer *server = NULL;
  70 static AvahiSServiceTypeBrowser *service_type_browser = NULL;
  71 static GHashTable *service_type_hash_table = NULL;
  72 static AvahiSServiceResolver *service_resolver = NULL;
  73 static struct Service *current_service = NULL;
  74
  75 static const char* getifname(int idx) {
  76     static char t[256];
  77     static struct ifreq ifreq;
  78     int fd = -1;
  79
  80     memset(&ifreq, 0, sizeof(ifreq));
  81
  82     if ((fd = socket(PF_INET, SOCK_DGRAM, 0)) < 0)
  83         if ((fd = socket(PF_INET6, SOCK_DGRAM, 0)) < 0)
  84             goto fail;
  85
  86     ifreq.ifr_ifindex = idx;
  87     if (ioctl(fd, SIOCGIFNAME, &ifreq) < 0)
  88         goto fail;
  89
  90     close(fd);
  91
  92     return ifreq.ifr_name;
  93
  94
  95 fail:
  96     if (fd >= 0)
  97         close(fd);
  98
  99     snprintf(t, sizeof(t), "#%i", idx);
 100     return t;
 101 }
 102
 103 static struct Service *get_service(const gchar *service_type, const gchar *service_name, const gchar*domain_name, AvahiIfIndex interface, AvahiProtocol protocol) {
 104     struct ServiceType *st;
 105     GList *l;
 106
 107     if (!(st = g_hash_table_lookup(service_type_hash_table, service_type)))
 108         return NULL;
 109
 110     for (l = st->services; l; l = l->next) {
 111         struct Service *s = l->data;
 112
 113         if (s->interface == interface &&
 114             s->protocol == protocol &&
 115             avahi_domain_equal(s->service_name, service_name) &&
 116             avahi_domain_equal(s->domain_name, domain_name))
 117             return s;
 118     }
 119
 120     return NULL;
 121 }
 122
 123 static void free_service(struct Service *s) {
 124     GtkTreeIter iter;
 125     GtkTreePath *path;
 126
 127     if (current_service == s) {
 128         current_service = NULL;
 129
 130         if (service_resolver) {
 131             avahi_s_service_resolver_free(service_resolver);
 132             service_resolver = NULL;
 133         }
 134
 135         gtk_label_set_text(info_label, "<i>Service removed</i>");
 136     }
 137
 138     s->service_type->services = g_list_remove(s->service_type->services, s);
 139
 140     if ((path = gtk_tree_row_reference_get_path(s->tree_ref))) {
 141         gtk_tree_model_get_iter(GTK_TREE_MODEL(tree_store), &iter, path);
 142         gtk_tree_path_free(path);
 143     }
 144
 145     gtk_tree_store_remove(tree_store, &iter);
 146
 147     gtk_tree_row_reference_free(s->tree_ref);
 148
 149     g_free(s->service_name);
 150     g_free(s->domain_name);
 151     g_free(s);
 152 }
 153
 154 static void service_browser_callback(
 155     AvahiSServiceBrowser *b,
 156     AvahiIfIndex interface,
 157     AvahiProtocol protocol,
 158     AvahiBrowserEvent event,
 159     const char *service_name,
 160     const char *service_type,
 161     const char *domain_name,
 162     AvahiLookupResultFlags flags,
 163     void* userdata) {
 164
 165     if (event == AVAHI_BROWSER_NEW) {
 166         struct Service *s;
 167         GtkTreeIter iter, piter;
 168         GtkTreePath *path, *ppath;
 169         gchar iface[256];
 170
 171         s = g_new(struct Service, 1);
 172         s->service_name = g_strdup(service_name);
 173         s->domain_name = g_strdup(domain_name);
 174         s->interface = interface;
 175         s->protocol = protocol;
 176         s->service_type = g_hash_table_lookup(service_type_hash_table, service_type);
 177         g_assert(s->service_type);
 178
 179         s->service_type->services = g_list_prepend(s->service_type->services, s);
 180
 181         ppath = gtk_tree_row_reference_get_path(s->service_type->tree_ref);
 182         gtk_tree_model_get_iter(GTK_TREE_MODEL(tree_store), &piter, ppath);
 183
 184         snprintf(iface, sizeof(iface), "%s %s", getifname(interface), avahi_proto_to_string(protocol));
 185
 186         gtk_tree_store_append(tree_store, &iter, &piter);
 187         gtk_tree_store_set(tree_store, &iter, 0, s->service_name, 1, iface, 2, s, -1);
 188
 189         path = gtk_tree_model_get_path(GTK_TREE_MODEL(tree_store), &iter);
 190         s->tree_ref = gtk_tree_row_reference_new(GTK_TREE_MODEL(tree_store), path);
 191         gtk_tree_path_free(path);
 192
 193         gtk_tree_view_expand_row(tree_view, ppath, FALSE);
 194         gtk_tree_path_free(ppath);
 195
 196
 197     } else if (event == AVAHI_BROWSER_REMOVE) {
 198         struct Service* s;
 199
 200         if ((s = get_service(service_type, service_name, domain_name, interface, protocol)))
 201             free_service(s);
 202     }
 203 }
 204
 205 static void service_type_browser_callback(
 206     AvahiSServiceTypeBrowser *b,
 207     AvahiIfIndex interface,
 208     AvahiProtocol protocol,
 209     AvahiBrowserEvent event,
 210     const char *service_type,
 211     const char *domain,
 212     AvahiLookupResultFlags flags,
 213     void * userdata) {
 214
 215     struct ServiceType *st;
 216     GtkTreePath *path;
 217     GtkTreeIter iter;
 218
 219     if (event != AVAHI_BROWSER_NEW)
 220         return;
 221
 222     if (g_hash_table_lookup(service_type_hash_table, service_type))
 223         return;
 224
 225     st = g_new(struct ServiceType, 1);
 226     st->service_type = g_strdup(service_type);
 227     st->services = NULL;
 228
 229     gtk_tree_store_append(tree_store, &iter, NULL);
 230     gtk_tree_store_set(tree_store, &iter, 0, st->service_type, 1, "", 2, NULL, -1);
 231
 232     path = gtk_tree_model_get_path(GTK_TREE_MODEL(tree_store), &iter);
 233     st->tree_ref = gtk_tree_row_reference_new(GTK_TREE_MODEL(tree_store), path);
 234     gtk_tree_path_free(path);
 235
 236     g_hash_table_insert(service_type_hash_table, st->service_type, st);
 237
 238     st->browser = avahi_s_service_browser_new(server, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, st->service_type, domain, 0, service_browser_callback, NULL);
 239 }
 240
 241 static void update_label(struct Service *s, const gchar *hostname, const AvahiAddress *a, guint16 port, AvahiStringList *txt) {
 242     gchar t[512], address[64], *txt_s;
 243
 244     if (a && hostname) {
 245         char na[256];
 246         avahi_address_snprint(na, sizeof(na), a);
 247         snprintf(address, sizeof(address), "%s/%s:%u", hostname, na, port);
 248
 249         if (txt)
 250             txt_s = avahi_string_list_to_string(txt);
 251         else
 252             txt_s = g_strdup("<i>empty</i>");
 253     } else {
 254         snprintf(address, sizeof(address), "<i>n/a</i>");
 255         txt_s = g_strdup("<i>n/a</i>");
 256     }
 257
 258     snprintf(t, sizeof(t),
 259              "<b>Service Type:</b> %s\n"
 260              "<b>Service Name:</b> %s\n"
 261              "<b>Domain Name:</b> %s\n"
 262              "<b>Interface:</b> %s %s\n"
 263              "<b>Address:</b> %s\n"
 264              "<b>TXT Data:</b> %s",
 265              s->service_type->service_type,
 266              s->service_name,
 267              s->domain_name,
 268              getifname(s->interface), avahi_proto_to_string(s->protocol),
 269              address,
 270              txt_s);
 271
 272     gtk_label_set_markup(info_label, t);
 273
 274     g_free(txt_s);
 275 }
 276
 277 static struct Service *get_service_on_cursor(void) {
 278     GtkTreePath *path;
 279     struct Service *s;
 280     GtkTreeIter iter;
 281
 282     gtk_tree_view_get_cursor(tree_view, &path, NULL);
 283
 284     if (!path)
 285         return NULL;
 286
 287     gtk_tree_model_get_iter(GTK_TREE_MODEL(tree_store), &iter, path);
 288     gtk_tree_model_get(GTK_TREE_MODEL(tree_store), &iter, 2, &s, -1);
 289     gtk_tree_path_free(path);
 290
 291     return s;
 292 }
 293
 294 static void service_resolver_callback(
 295     AvahiSServiceResolver *r,
 296     AvahiIfIndex interface,
 297     AvahiProtocol protocol,
 298     AvahiResolverEvent event,
 299     const char *name,
 300     const char *type,
 301     const char *domain,
 302     const char *host_name,
 303     const AvahiAddress *a,
 304     uint16_t port,
 305     AvahiStringList *txt,
 306     AvahiLookupResultFlags flags,
 307     void* userdata) {
 308
 309     struct Service *s;
 310     g_assert(r);
 311
 312     if (!(s = get_service_on_cursor()) || userdata != s) {
 313         g_assert(r == service_resolver);
 314         avahi_s_service_resolver_free(service_resolver);
 315         service_resolver = NULL;
 316         return;
 317     }
 318
 319     if (event == AVAHI_RESOLVER_FAILURE) {
 320         char t[256];
 321         snprintf(t, sizeof(t), "<i>Failed to resolve: %s.</i>", avahi_strerror(avahi_server_errno(server)));
 322         gtk_label_set_markup(info_label, t);
 323     } else if (event == AVAHI_RESOLVER_FOUND)
 324         update_label(s, host_name, a, port, txt);
 325 }
 326
 327 static void tree_view_on_cursor_changed(GtkTreeView *tv, gpointer userdata) {
 328     struct Service *s;
 329
 330     if (!(s = get_service_on_cursor()))
 331         return;
 332
 333     if (service_resolver)
 334         avahi_s_service_resolver_free(service_resolver);
 335
 336     update_label(s, NULL, NULL, 0, NULL);
 337
 338     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);
 339 }
 340
 341 static gboolean main_window_on_delete_event(GtkWidget *widget, GdkEvent *event, gpointer user_data) {
 342     gtk_main_quit();
 343     return FALSE;
 344 }
 345
 346 int main(int argc, char *argv[]) {
 347     GladeXML *xml;
 348     AvahiServerConfig config;
 349     GtkTreeViewColumn *c;
 350     gint error;
 351     AvahiGLibPoll *poll_api;
 352
 353     gtk_init(&argc, &argv);
 354     glade_init();
 355
 356     avahi_set_allocator(avahi_glib_allocator());
 357
 358     poll_api = avahi_glib_poll_new(NULL, G_PRIORITY_DEFAULT);
 359
 360     xml = glade_xml_new(AVAHI_INTERFACES_DIR"avahi-discover.glade", NULL, NULL);
 361     main_window = glade_xml_get_widget(xml, "main_window");
 362     g_signal_connect(main_window, "delete-event", (GCallback) main_window_on_delete_event, NULL);
 363
 364     tree_view = GTK_TREE_VIEW(glade_xml_get_widget(xml, "tree_view"));
 365     g_signal_connect(GTK_WIDGET(tree_view), "cursor-changed", (GCallback) tree_view_on_cursor_changed, NULL);
 366
 367     info_label = GTK_LABEL(glade_xml_get_widget(xml, "info_label"));
 368
 369     tree_store = gtk_tree_store_new(3, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_POINTER);
 370     gtk_tree_view_set_model(tree_view, GTK_TREE_MODEL(tree_store));
 371     gtk_tree_view_insert_column_with_attributes(tree_view, -1, "Name", gtk_cell_renderer_text_new(), "text", 0, NULL);
 372     gtk_tree_view_insert_column_with_attributes(tree_view, -1, "Interface", gtk_cell_renderer_text_new(), "text", 1, NULL);
 373
 374     gtk_tree_view_column_set_resizable(c = gtk_tree_view_get_column(tree_view, 0), TRUE);
 375     gtk_tree_view_column_set_sizing(c, GTK_TREE_VIEW_COLUMN_GROW_ONLY);
 376     gtk_tree_view_column_set_expand(c, TRUE);
 377
 378     service_type_hash_table = g_hash_table_new((GHashFunc) avahi_domain_hash, (GEqualFunc) avahi_domain_equal);
 379
 380     avahi_server_config_init(&config);
 381     config.publish_hinfo = config.publish_addresses = config.publish_domain = config.publish_workstation = FALSE;
 382     server = avahi_server_new(avahi_glib_poll_get(poll_api), &config, NULL, NULL, &error);
 383     avahi_server_config_free(&config);
 384
 385     g_assert(server);
 386
 387     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);
 388
 389     gtk_main();
 390
 391     avahi_server_free(server);
 392     avahi_glib_poll_free(poll_api);
 393
 394     return 0;
 395 }