--- /dev/null
+/* $Id$ */
+
+/***
+ This file is part of avahi.
+
+ avahi is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ avahi is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
+ Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with avahi; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <getopt.h>
+#include <assert.h>
+#include <string.h>
+#include <net/if.h>
+
+#include <avahi-common/simple-watch.h>
+#include <avahi-common/error.h>
+#include <avahi-common/malloc.h>
+#include <avahi-common/domain.h>
+#include <avahi-common/llist.h>
+#include <avahi-client/client.h>
+#include <avahi-client/lookup.h>
+
+#include "sigint.h"
+
+typedef enum {
+ COMMAND_HELP,
+ COMMAND_VERSION,
+ COMMAND_RUN
+} Command;
+
+typedef struct Config {
+ int verbose;
+ int terminate_on_all_for_now;
+ int terminate_on_cache_exhausted;
+ char *domain;
+ char *stype;
+ int ignore_local;
+ int show_all;
+ Command command;
+ int resolve;
+} Config;
+
+
+typedef struct ServiceInfo ServiceInfo;
+
+struct ServiceInfo {
+ AvahiIfIndex interface;
+ AvahiProtocol protocol;
+ char *name, *type, *domain;
+
+ AvahiServiceResolver *resolver;
+ Config *config;
+
+ AVAHI_LLIST_FIELDS(ServiceInfo, info);
+};
+
+static AvahiSimplePoll *simple_poll = NULL;
+static AvahiClient *client = NULL;
+static int n_all_for_now = 0, n_cache_exhausted = 0, n_resolving = 0;
+static AvahiStringList *browsed_types = NULL;
+static ServiceInfo *services = NULL;
+static int n_columns = 80;
+
+static void check_terminate(Config *c) {
+
+ assert(n_all_for_now >= 0);
+ assert(n_cache_exhausted >= 0);
+ assert(n_resolving >= 0);
+
+ if (n_all_for_now <= 0 && n_resolving <= 0) {
+
+ if (c->verbose) {
+ printf(": All for now\n");
+ n_all_for_now++; /* Make sure that this event is not repeated */
+ }
+
+ if (c->terminate_on_all_for_now)
+ avahi_simple_poll_quit(simple_poll);
+ }
+
+ if (n_cache_exhausted <= 0 && n_resolving <= 0) {
+
+ if (c->verbose) {
+ printf(": Cache exhausted\n");
+ n_cache_exhausted++; /* Make sure that this event is not repeated */
+ }
+
+ if (c->terminate_on_cache_exhausted)
+ avahi_simple_poll_quit(simple_poll);
+ }
+}
+
+static ServiceInfo *find_service(AvahiIfIndex interface, AvahiProtocol protocol, const char *name, const char *type, const char *domain) {
+ ServiceInfo *i;
+
+ for (i = services; i; i = i->info_next)
+ if (i->interface == interface &&
+ i->protocol == protocol &&
+ strcasecmp(i->name, name) == 0 &&
+ avahi_domain_equal(i->type, type) == 0 &&
+ avahi_domain_equal(i->domain, domain) == 0)
+
+ return i;
+
+ return NULL;
+}
+
+static void service_resolver_callback(
+ AvahiServiceResolver *r,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiResolverEvent event,
+ const char *name,
+ const char *type,
+ const char *domain,
+ const char *host_name,
+ const AvahiAddress *a,
+ uint16_t port,
+ AvahiStringList *txt,
+ AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
+ void *userdata) {
+
+ ServiceInfo *i = userdata;
+
+ assert(r);
+ assert(i);
+
+ switch (event) {
+ case AVAHI_RESOLVER_FOUND: {
+ char address[AVAHI_ADDRESS_STR_MAX], *t;
+ char ifname[IF_NAMESIZE];
+
+ avahi_address_snprint(address, sizeof(address), a);
+
+ t = avahi_string_list_to_string(txt);
+
+ printf("= %4s %4s %-*s %-20s %s\n"
+ " hostname = [%s]\n"
+ " address = [%s]\n"
+ " port = [%i]\n"
+ " txt = [%s]\n",
+ if_indextoname(interface, ifname), avahi_proto_to_string(protocol),
+ n_columns-35, name, type, domain,
+ host_name,
+ address,
+ port,
+ t);
+ avahi_free(t);
+
+ break;
+ }
+
+ case AVAHI_RESOLVER_FAILURE:
+
+ fprintf(stderr, "Failed to resolve service '%s' of type '%s' in domain '%s': %s\n", name, type, domain, avahi_strerror(avahi_client_errno(client)));
+ break;
+ }
+
+
+ avahi_service_resolver_free(i->resolver);
+ i->resolver = NULL;
+
+ assert(n_resolving > 0);
+ n_resolving--;
+ check_terminate(i->config);
+}
+
+static ServiceInfo *add_service(Config *c, AvahiIfIndex interface, AvahiProtocol protocol, const char *name, const char *type, const char *domain) {
+ ServiceInfo *i;
+
+ i = avahi_new(ServiceInfo, 1);
+
+ if (c->resolve) {
+ if (!(i->resolver = avahi_service_resolver_new(client, interface, protocol, name, type, domain, AVAHI_PROTO_UNSPEC, 0, service_resolver_callback, i))) {
+ avahi_free(i);
+ fprintf(stderr, "Failed to resolve service '%s' of type '%s' in domain '%s': %s\n", name, type, domain, avahi_strerror(avahi_client_errno(client)));
+ return NULL;
+ }
+
+ n_resolving++;
+ } else
+ i->resolver = NULL;
+
+ i->interface = interface;
+ i->protocol = protocol;
+ i->name = avahi_strdup(name);
+ i->type = avahi_strdup(type);
+ i->domain = avahi_strdup(domain);
+ i->config = c;
+
+ AVAHI_LLIST_PREPEND(ServiceInfo, info, services, i);
+
+ return i;
+}
+
+static void remove_service(Config *c, ServiceInfo *i) {
+ assert(c);
+ assert(i);
+
+ AVAHI_LLIST_REMOVE(ServiceInfo, info, services, i);
+
+ if (i->resolver)
+ avahi_service_resolver_free(i->resolver);
+
+ avahi_free(i->name);
+ avahi_free(i->type);
+ avahi_free(i->domain);
+ avahi_free(i);
+}
+
+static void service_browser_callback(
+ AvahiServiceBrowser *b,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiBrowserEvent event,
+ const char *name,
+ const char *type,
+ const char *domain,
+ AvahiLookupResultFlags flags,
+ void *userdata) {
+
+ Config *c = userdata;
+
+ assert(b);
+ assert(c);
+
+ switch (event) {
+ case AVAHI_BROWSER_NEW: {
+ char ifname[IF_NAMESIZE];
+ if (c->ignore_local && (flags & AVAHI_LOOKUP_RESULT_LOCAL))
+ break;
+
+ if (find_service(interface, protocol, name, type, domain))
+ return;
+
+ add_service(c, interface, protocol, name, type, domain);
+
+ printf("+ %4s %4s %-*s %-20s %s\n", if_indextoname(interface, ifname), avahi_proto_to_string(protocol), n_columns-35, name, type, domain);
+ break;
+
+ }
+
+ case AVAHI_BROWSER_REMOVE: {
+ char ifname[IF_NAMESIZE];
+ ServiceInfo *info;
+
+ if (!(info = find_service(interface, protocol, name, type, domain)))
+ return;
+
+ remove_service(c, info);
+
+ printf("- %4s %4s %-*s %-20s %s\n", if_indextoname(interface, ifname), avahi_proto_to_string(protocol), n_columns-35, name, type, domain);
+ break;
+ }
+
+ case AVAHI_BROWSER_FAILURE:
+ fprintf(stderr, "service_browser failed: %s\n", avahi_strerror(avahi_client_errno(client)));
+ avahi_simple_poll_quit(simple_poll);
+ break;
+
+ case AVAHI_BROWSER_CACHE_EXHAUSTED:
+ n_cache_exhausted --;
+ check_terminate(c);
+ break;
+
+ case AVAHI_BROWSER_ALL_FOR_NOW:
+ n_all_for_now --;
+ check_terminate(c);
+ break;
+ }
+}
+
+static void browse_service_type(Config *c, const char *stype, const char *domain) {
+ AvahiServiceBrowser *b;
+ AvahiStringList *i;
+
+ assert(c);
+ assert(client);
+ assert(stype);
+
+ for (i = browsed_types; i; i = i->next)
+ if (avahi_domain_equal(stype, (char*) i->text))
+ return;
+
+ if (!(b = avahi_service_browser_new(
+ client,
+ AVAHI_IF_UNSPEC,
+ AVAHI_PROTO_UNSPEC,
+ stype,
+ domain,
+ 0,
+ service_browser_callback,
+ c))) {
+
+ fprintf(stderr, "avahi_service_browser_new() failed: %s\n", avahi_strerror(avahi_client_errno(client)));
+ avahi_simple_poll_quit(simple_poll);
+ }
+
+ browsed_types = avahi_string_list_add(browsed_types, stype);
+
+ n_all_for_now++;
+ n_cache_exhausted++;
+}
+
+static void service_type_browser_callback(
+ AvahiServiceTypeBrowser *b,
+ AVAHI_GCC_UNUSED AvahiIfIndex interface,
+ AVAHI_GCC_UNUSED AvahiProtocol protocol,
+ AvahiBrowserEvent event,
+ const char *type,
+ const char *domain,
+ AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
+ void *userdata) {
+
+ Config *c = userdata;
+
+ assert(b);
+ assert(c);
+
+ switch (event) {
+
+ case AVAHI_BROWSER_NEW:
+ browse_service_type(c, type, domain);
+ break;
+
+ case AVAHI_BROWSER_REMOVE:
+ /* We're dirty and never remove the browser again */
+ break;
+
+ case AVAHI_BROWSER_FAILURE:
+ fprintf(stderr, "service_type_browser failed: %s\n", avahi_strerror(avahi_client_errno(client)));
+ avahi_simple_poll_quit(simple_poll);
+ break;
+
+ case AVAHI_BROWSER_CACHE_EXHAUSTED:
+ n_cache_exhausted --;
+ check_terminate(c);
+ break;
+
+ case AVAHI_BROWSER_ALL_FOR_NOW:
+ n_all_for_now --;
+ check_terminate(c);
+ break;
+ }
+}
+
+static void browse_all(Config *c) {
+ AvahiServiceTypeBrowser *b;
+
+ assert(c);
+
+ if (!(b = avahi_service_type_browser_new(
+ client,
+ AVAHI_IF_UNSPEC,
+ AVAHI_PROTO_UNSPEC,
+ c->domain,
+ 0,
+ service_type_browser_callback,
+ c))) {
+
+ fprintf(stderr, "avahi_service_type_browser_new() failed: %s\n", avahi_strerror(avahi_client_errno(client)));
+ avahi_simple_poll_quit(simple_poll);
+ }
+
+ n_cache_exhausted++;
+ n_all_for_now++;
+}
+
+static void client_callback(AVAHI_GCC_UNUSED AvahiClient *c, AvahiClientState state, AVAHI_GCC_UNUSED void * userdata) {
+ switch (state) {
+ case AVAHI_CLIENT_DISCONNECTED:
+ fprintf(stderr, "Client disconnected, exiting.\n");
+ avahi_simple_poll_quit(simple_poll);
+ break;
+
+ case AVAHI_CLIENT_S_REGISTERING:
+ case AVAHI_CLIENT_S_RUNNING:
+ case AVAHI_CLIENT_S_COLLISION:
+ ;
+ }
+}
+
+static void help(FILE *f, const char *argv0) {
+ fprintf(f,
+ "%s [options] <type>\n"
+ "%s [options] -a\n\n"
+ " -h --help Show this help\n"
+ " -V --version Show version\n"
+ " -d --domain=DOMAIN The domain to browse\n"
+ " -a --all Show all services, regardless of the type\n"
+ " -v --verbose Enable verbose mode\n"
+ " -t --terminate Terminate after getting or more or less complete list\n"
+ " -c --cache Terminate after dumping all entries from the cache\n"
+ " -l --ignore-local Ignore local services\n"
+ " -r --resolve Resolve services found\n",
+ argv0, argv0);
+}
+
+
+static int parse_command_line(Config *c, int argc, char *argv[]) {
+ int o;
+
+ static const struct option long_options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, 'V' },
+ { "domain", required_argument, NULL, 'd' },
+ { "all", no_argument, NULL, 'a' },
+ { "verbose", no_argument, NULL, 'v' },
+ { "terminate", no_argument, NULL, 't' },
+ { "cache", no_argument, NULL, 'c' },
+ { "ignore-local", no_argument, NULL, 'l' },
+ { "resolve", no_argument, NULL, 'r' },
+ { NULL, 0, NULL, 0 }
+ };
+
+ assert(c);
+
+ c->command = COMMAND_RUN;
+ c->verbose =
+ c->terminate_on_cache_exhausted =
+ c->terminate_on_all_for_now =
+ c->show_all =
+ c->ignore_local =
+ c->resolve = 0;
+ c->domain = c->stype = NULL;
+
+ opterr = 0;
+ while ((o = getopt_long(argc, argv, "hVd:avtclr", long_options, NULL)) >= 0) {
+
+ switch(o) {
+ case 'h':
+ c->command = COMMAND_HELP;
+ break;
+ case 'V':
+ c->command = COMMAND_VERSION;
+ break;
+ case 'd':
+ c->domain = avahi_strdup(optarg);
+ break;
+ case 'a':
+ c->show_all = 1;
+ break;
+ case 'v':
+ c->verbose = 1;
+ break;
+ case 't':
+ c->terminate_on_all_for_now = 1;
+ break;
+ case 'c':
+ c->terminate_on_cache_exhausted = 1;
+ break;
+ case 'l':
+ c->ignore_local = 1;
+ break;
+ case 'r':
+ c->resolve = 1;
+ break;
+ default:
+ fprintf(stderr, "Invalid command line argument: %c\n", o);
+ return -1;
+ }
+ }
+
+ if (c->command == COMMAND_RUN && !c->show_all) {
+ if (optind >= argc) {
+ fprintf(stderr, "Too few arguments\n");
+ return -1;
+ }
+
+ c->stype = avahi_strdup(argv[optind]);
+ optind++;
+ }
+
+ if (optind < argc) {
+ fprintf(stderr, "Too many arguments\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+int main(int argc, char *argv[]) {
+ int ret = 1, error;
+ Config config;
+ const char *argv0;
+ char *ec;
+
+ if ((argv0 = strrchr(argv[0], '/')))
+ argv0++;
+ else
+ argv0 = argv[0];
+
+ if ((ec = getenv("COLUMNS")))
+ n_columns = atoi(ec);
+
+ if (n_columns < 40)
+ n_columns = 40;
+
+ if (parse_command_line(&config, argc, argv) < 0)
+ goto fail;
+
+ switch (config.command) {
+ case COMMAND_HELP:
+ help(stdout, argv0);
+ ret = 0;
+ break;
+
+ case COMMAND_VERSION:
+ printf("%s "PACKAGE_VERSION"\n", argv0);
+ ret = 0;
+ break;
+
+ case COMMAND_RUN:
+
+ if (!(simple_poll = avahi_simple_poll_new())) {
+ fprintf(stderr, "Failed to create simple poll object.\n");
+ goto fail;
+ }
+
+ if (sigint_install(simple_poll) < 0)
+ goto fail;
+
+ if (!(client = avahi_client_new(avahi_simple_poll_get(simple_poll), client_callback, NULL, &error))) {
+ fprintf(stderr, "Failed to create client object: %s\n", avahi_strerror(error));
+ goto fail;
+ }
+
+ if (config.verbose) {
+ const char *version, *hn;
+
+ if (!(version = avahi_client_get_version_string(client))) {
+ fprintf(stderr, "Failed to query version string: %s\n", avahi_strerror(avahi_client_errno(client)));
+ goto fail;
+ }
+
+ if (!(hn = avahi_client_get_host_name_fqdn(client))) {
+ fprintf(stderr, "Failed to query host name: %s\n", avahi_strerror(avahi_client_errno(client)));
+ goto fail;
+ }
+
+ fprintf(stderr, "Server version: %s; Host name: %s\n\n", version, hn);
+ fprintf(stderr, "E Ifce Prot %-*s %-20s Domain\n", n_columns-35, "Name", "Type");
+ }
+
+ if (config.show_all)
+ browse_all(&config);
+ else
+ browse_service_type(&config, config.stype, config.domain);
+
+ avahi_simple_poll_loop(simple_poll);
+ ret = 0;
+ break;
+ }
+
+
+fail:
+
+ while (services)
+ remove_service(&config, services);
+
+ if (client)
+ avahi_client_free(client);
+
+ sigint_uninstall();
+
+ if (simple_poll)
+ avahi_simple_poll_free(simple_poll);
+
+ avahi_free(config.domain);
+ avahi_free(config.stype);
+
+ avahi_string_list_free(browsed_types);
+
+ return ret;
+}
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