+/* $Id$ */
+
+/***
+ 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 <sys/types.h>
+#include <errno.h>
+
+#include <avahi-common/simple-watch.h>
+#include <avahi-common/error.h>
+#include <avahi-common/malloc.h>
+#include <avahi-common/alternative.h>
+#include <avahi-client/client.h>
+#include <avahi-client/publish.h>
+
+#include "sigint.h"
+
+typedef enum {
+ COMMAND_UNSPEC,
+ COMMAND_HELP,
+ COMMAND_VERSION,
+ COMMAND_PUBLISH_SERVICE,
+ COMMAND_PUBLISH_ADDRESS
+} Command;
+
+typedef struct Config {
+ int verbose, no_fail;
+ Command command;
+ char *name, *stype, *domain, *host;
+ uint16_t port;
+ AvahiStringList *txt, *subtypes;
+ AvahiAddress address;
+} Config;
+
+static AvahiSimplePoll *simple_poll = NULL;
+static AvahiClient *client = NULL;
+static AvahiEntryGroup *entry_group = NULL;
+
+static int register_stuff(Config *config);
+
+static void entry_group_callback(AvahiEntryGroup *g, AvahiEntryGroupState state, void *userdata) {
+ Config *config = userdata;
+
+ assert(g);
+ assert(config);
+
+ switch (state) {
+
+ case AVAHI_ENTRY_GROUP_ESTABLISHED:
+
+ fprintf(stderr, "Established under name '%s'\n", config->name);
+ break;
+
+ case AVAHI_ENTRY_GROUP_FAILURE:
+
+ fprintf(stderr, "Failed to register: %s\n", avahi_strerror(avahi_client_errno(client)));
+ break;
+
+ case AVAHI_ENTRY_GROUP_COLLISION: {
+ char *n;
+
+ if (config->command == COMMAND_PUBLISH_SERVICE)
+ n = avahi_alternative_service_name(config->name);
+ else {
+ assert(config->command == COMMAND_PUBLISH_ADDRESS);
+ n = avahi_alternative_host_name(config->name);
+ }
+
+ fprintf(stderr, "Name collision, picking new name '%s'.\n", n);
+ avahi_free(config->name);
+ config->name = n;
+
+ register_stuff(config);
+
+ break;
+ }
+
+ case AVAHI_ENTRY_GROUP_UNCOMMITED:
+ case AVAHI_ENTRY_GROUP_REGISTERING:
+ ;
+ }
+}
+
+static int register_stuff(Config *config) {
+ assert(config);
+
+ if (!entry_group) {
+ if (!(entry_group = avahi_entry_group_new(client, entry_group_callback, config))) {
+ fprintf(stderr, "Failed to create entry group: %s\n", avahi_strerror(avahi_client_errno(client)));
+ return -1;
+ }
+ }
+
+ assert(avahi_entry_group_is_empty(entry_group));
+
+ if (config->command == COMMAND_PUBLISH_ADDRESS) {
+
+ if (avahi_entry_group_add_address(entry_group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, 0, config->name, &config->address) < 0) {
+ fprintf(stderr, "Failed to add address: %s\n", avahi_strerror(avahi_client_errno(client)));
+ return -1;
+ }
+
+ } else {
+ AvahiStringList *i;
+
+ assert(config->command == COMMAND_PUBLISH_SERVICE);
+
+ if (avahi_entry_group_add_service_strlst(entry_group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, 0, config->name, config->stype, config->domain, config->host, config->port, config->txt) < 0) {
+ fprintf(stderr, "Failed to add service: %s\n", avahi_strerror(avahi_client_errno(client)));
+ return -1;
+ }
+
+ for (i = config->subtypes; i; i = i->next)
+ if (avahi_entry_group_add_service_subtype(entry_group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, 0, config->name, config->stype, config->domain, (char*) i->text) < 0) {
+ fprintf(stderr, "Failed to add subtype '%s': %s\n", i->text, avahi_strerror(avahi_client_errno(client)));
+ return -1;
+ }
+ }
+
+ avahi_entry_group_commit(entry_group);
+
+ return 0;
+}
+
+static void client_callback(AvahiClient *c, AvahiClientState state, AVAHI_GCC_UNUSED void * userdata) {
+ Config *config = userdata;
+
+ client = c;
+
+ switch (state) {
+ case AVAHI_CLIENT_FAILURE:
+
+ if (config->no_fail && avahi_client_errno(c) == AVAHI_ERR_DISCONNECTED) {
+ int error;
+
+ /* We have been disconnected, so let reconnect */
+
+ fprintf(stderr, "Disconnected, reconnecting ...\n");
+
+ avahi_client_free(client);
+ client = NULL;
+ entry_group = NULL;
+
+ if (!(client = avahi_client_new(avahi_simple_poll_get(simple_poll), AVAHI_CLIENT_NO_FAIL, client_callback, config, &error))) {
+ fprintf(stderr, "Failed to create client object: %s\n", avahi_strerror(error));
+ avahi_simple_poll_quit(simple_poll);
+ }
+
+ } else {
+ fprintf(stderr, "Client failure, exiting: %s\n", avahi_strerror(avahi_client_errno(c)));
+ avahi_simple_poll_quit(simple_poll);
+ }
+
+ break;
+
+ case AVAHI_CLIENT_S_RUNNING:
+
+ if (register_stuff(config) < 0)
+ avahi_simple_poll_quit(simple_poll);
+
+ break;
+
+ case AVAHI_CLIENT_S_COLLISION:
+
+ if (config->verbose)
+ fprintf(stderr, "Host name conflict\n");
+
+ if (entry_group) {
+ avahi_entry_group_free(entry_group);
+ entry_group = NULL;
+ }
+ break;
+
+ case AVAHI_CLIENT_CONNECTING:
+
+ if (config->verbose)
+ fprintf(stderr, "Waiting for daemon ...\n");
+ break;
+
+ case AVAHI_CLIENT_S_REGISTERING:
+ ;
+ }
+}
+
+static void help(FILE *f, const char *argv0) {
+ fprintf(f,
+ "%s [options] %s <name> <type> <port> [<txt ...>]\n"
+ "%s [options] %s <host-name> <address>\n\n"
+ " -h --help Show this help\n"
+ " -V --version Show version\n"
+ " -s --service Publish service\n"
+ " -a --address Publish address\n"
+ " -v --verbose Enable verbose mode\n"
+ " -d --domain=DOMAIN Domain to publish service in\n"
+ " -H --host=DOMAIN Host where service resides\n"
+ " --subtype=SUBTYPE An additional subtype to register this service with\n"
+ " -f --no-fail Don't fail if the daemon is not available\n",
+ argv0, strstr(argv0, "address") ? "[-a]" : "-a",
+ argv0, strstr(argv0, "service") ? "[-s]" : "-s");
+}
+
+static int parse_command_line(Config *c, const char *argv0, int argc, char *argv[]) {
+ int o;
+
+ enum {
+ ARG_SUBTYPE = 256
+ };
+
+ static const struct option long_options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, 'V' },
+ { "service", no_argument, NULL, 's' },
+ { "address", no_argument, NULL, 'a' },
+ { "verbose", no_argument, NULL, 'v' },
+ { "domain", required_argument, NULL, 'd' },
+ { "host", required_argument, NULL, 'H' },
+ { "subtype", required_argument, NULL, ARG_SUBTYPE},
+ { "no-fail", no_argument, NULL, 'f' },
+ { NULL, 0, NULL, 0 }
+ };
+
+ assert(c);
+
+ c->command = strstr(argv0, "address") ? COMMAND_PUBLISH_ADDRESS : (strstr(argv0, "service") ? COMMAND_PUBLISH_SERVICE : COMMAND_UNSPEC);
+ c->verbose = c->no_fail = 0;
+ c->host = c->name = c->domain = c->stype = NULL;
+ c->port = 0;
+ c->txt = c->subtypes = NULL;
+
+ opterr = 0;
+ while ((o = getopt_long(argc, argv, "hVsavd:H:f", long_options, NULL)) >= 0) {
+
+ switch(o) {
+ case 'h':
+ c->command = COMMAND_HELP;
+ break;
+ case 'V':
+ c->command = COMMAND_VERSION;
+ break;
+ case 's':
+ c->command = COMMAND_PUBLISH_SERVICE;
+ break;
+ case 'a':
+ c->command = COMMAND_PUBLISH_ADDRESS;
+ break;
+ case 'v':
+ c->verbose = 1;
+ break;
+ case 'd':
+ avahi_free(c->domain);
+ c->domain = avahi_strdup(optarg);
+ break;
+ case 'H':
+ avahi_free(c->host);
+ c->host = avahi_strdup(optarg);
+ break;
+ case 'f':
+ c->no_fail = 1;
+ break;
+ case ARG_SUBTYPE:
+ c->subtypes = avahi_string_list_add(c->subtypes, optarg);
+ break;
+ default:
+ fprintf(stderr, "Invalid command line argument: %c\n", o);
+ return -1;
+ }
+ }
+
+ if (c->command == COMMAND_PUBLISH_ADDRESS) {
+ if (optind+2 != argc) {
+ fprintf(stderr, "Bad number of arguments\n");
+ return -1;
+ }
+
+ avahi_free(c->name);
+ c->name = avahi_strdup(argv[optind]);
+ avahi_address_parse(argv[optind+1], AVAHI_PROTO_UNSPEC, &c->address);
+
+ } else if (c->command == COMMAND_PUBLISH_SERVICE) {
+
+ char *e;
+ long int p;
+ int i;
+
+ if (optind+3 > argc) {
+ fprintf(stderr, "Bad number of arguments\n");
+ return -1;
+ }
+
+ c->name = avahi_strdup(argv[optind]);
+ c->stype = avahi_strdup(argv[optind+1]);
+
+ errno = 0;
+ p = strtol(argv[optind+2], &e, 0);
+
+ if (errno != 0 || *e || p < 0 || p > 0xFFFF) {
+ fprintf(stderr, "Failed to parse port number: %s\n", argv[optind+2]);
+ return -1;
+ }
+
+ for (i = optind+3; i < argc; i++)
+ c->txt = avahi_string_list_add(c->txt, argv[i]);
+ }
+
+ return 0;
+}
+
+int main(int argc, char *argv[]) {
+ int ret = 1, error;
+ Config config;
+ const char *argv0;
+
+ if ((argv0 = strrchr(argv[0], '/')))
+ argv0++;
+ else
+ argv0 = argv[0];
+
+ if (parse_command_line(&config, argv0, argc, argv) < 0)
+ goto fail;
+
+ switch (config.command) {
+ case COMMAND_UNSPEC:
+ ret = 1;
+ fprintf(stderr, "No command specified.\n");
+ break;
+
+ case COMMAND_HELP:
+ help(stdout, argv0);
+ ret = 0;
+ break;
+
+ case COMMAND_VERSION:
+ printf("%s "PACKAGE_VERSION"\n", argv0);
+ ret = 0;
+ break;
+
+ case COMMAND_PUBLISH_SERVICE:
+ case COMMAND_PUBLISH_ADDRESS:
+
+ 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), config.no_fail ? AVAHI_CLIENT_NO_FAIL : 0, client_callback, &config, &error))) {
+ fprintf(stderr, "Failed to create client object: %s\n", avahi_strerror(error));
+ goto fail;
+ }
+
+ if (avahi_client_get_state(client) != AVAHI_CLIENT_CONNECTING && 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", version, hn);
+ }
+
+ avahi_simple_poll_loop(simple_poll);
+ ret = 0;
+ break;
+ }
+
+fail:
+
+ if (client)
+ avahi_client_free(client);
+
+ sigint_uninstall();
+
+ if (simple_poll)
+ avahi_simple_poll_free(simple_poll);
+
+ avahi_free(config.host);
+ avahi_free(config.name);
+ avahi_free(config.stype);
+ avahi_free(config.domain);
+ avahi_string_list_free(config.subtypes);
+ avahi_string_list_free(config.txt);
+
+ return ret;
+}
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