/***
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 <locale.h>
#include <avahi-common/simple-watch.h>
#include <avahi-common/error.h>
#include "avahi-common/avahi-malloc.h"
#include <avahi-common/alternative.h>
#include <avahi-common/i18n.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, no_reverse;
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, config->no_reverse ? AVAHI_PUBLISH_NO_REVERSE : 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"));
/* Fall through */
case AVAHI_CLIENT_S_REGISTERING:
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;
;
}
}
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"
" -R --no-reverse Do not publish reverse entry with address\n"
" -f --no-fail Don't fail if the daemon is not available\n"),
argv0, strstr(argv0, "service") ? "[-s]" : "-s",
argv0, strstr(argv0, "address") ? "[-a]" : "-a");
}
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-reverse", no_argument, NULL, 'R' },
{ "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 = c->no_reverse = 0;
c->host = c->name = c->domain = c->stype = NULL;
c->port = 0;
c->txt = c->subtypes = NULL;
while ((o = getopt_long(argc, argv, "hVsavRd: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 'R':
c->no_reverse = 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:
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;
}
c->port = p;
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;
avahi_init_i18n();
setlocale(LC_ALL, "");
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;
}