typedef enum {
COMMAND_HELP,
COMMAND_VERSION,
- COMMAND_RUN
+ COMMAND_BROWSE_SERVICES,
+ COMMAND_BROWSE_ALL_SERVICES,
+ COMMAND_BROWSE_DOMAINS
} Command;
typedef struct Config {
char *domain;
char *stype;
int ignore_local;
- int show_all;
Command command;
int resolve;
+ int no_fail;
#ifdef HAVE_GDBM
int no_db_lookup;
#endif
static AvahiStringList *browsed_types = NULL;
static ServiceInfo *services = NULL;
static int n_columns = 80;
+static int browsing = 0;
static void check_terminate(Config *c) {
printf("%c %4s %4s %-*s %-20s %s\n",
c,
- if_indextoname(interface, ifname), avahi_proto_to_string(protocol),
+ interface != AVAHI_IF_UNSPEC ? if_indextoname(interface, ifname) : "n/a",
+ protocol != AVAHI_PROTO_UNSPEC ? avahi_proto_to_string(protocol) : "n/a",
n_columns-35, name, type, domain);
}
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");
+static void domain_browser_callback(
+ AvahiDomainBrowser *b,
+ AVAHI_GCC_UNUSED AvahiIfIndex interface,
+ AVAHI_GCC_UNUSED AvahiProtocol protocol,
+ AvahiBrowserEvent event,
+ const char *domain,
+ AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
+ void *userdata) {
+
+ Config *c = userdata;
+
+ assert(b);
+ assert(c);
+
+ switch (event) {
+
+ case AVAHI_BROWSER_NEW:
+ case AVAHI_BROWSER_REMOVE: {
+ char ifname[IF_NAMESIZE];
+
+ printf("%c %4s %4s %s\n",
+ event == AVAHI_BROWSER_NEW ? '+' : '-',
+ interface != AVAHI_IF_UNSPEC ? if_indextoname(interface, ifname) : "n/a",
+ protocol != AVAHI_PROTO_UNSPEC ? avahi_proto_to_string(protocol) : "n/a",
+ domain);
+ break;
+ }
+
+ case AVAHI_BROWSER_FAILURE:
+ fprintf(stderr, "domain_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_domains(Config *c) {
+ AvahiDomainBrowser *b;
+
+ assert(c);
+
+ if (!(b = avahi_domain_browser_new(
+ client,
+ AVAHI_IF_UNSPEC,
+ AVAHI_PROTO_UNSPEC,
+ c->domain,
+ AVAHI_DOMAIN_BROWSER_BROWSE,
+ 0,
+ domain_browser_callback,
+ c))) {
+
+ fprintf(stderr, "avahi_domain_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 int start(Config *config) {
+
+ assert(!browsing);
+
+ 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)));
+ return -1;
+ }
+
+ if (!(hn = avahi_client_get_host_name_fqdn(client))) {
+ fprintf(stderr, "Failed to query host name: %s\n", avahi_strerror(avahi_client_errno(client)));
+ return -1;
+ }
+
+ fprintf(stderr, "Server version: %s; Host name: %s\n", version, hn);
+
+ if (config->command == COMMAND_BROWSE_DOMAINS)
+ fprintf(stderr, "E Ifce Prot Domain\n");
+ else
+ fprintf(stderr, "E Ifce Prot %-*s %-20s Domain\n", n_columns-35, "Name", "Type");
+ }
+
+ if (config->command == COMMAND_BROWSE_SERVICES)
+ browse_service_type(config, config->stype, config->domain);
+ else if (config->command == COMMAND_BROWSE_ALL_SERVICES)
+ browse_all(config);
+ else {
+ assert(config->command == COMMAND_BROWSE_DOMAINS);
+ browse_domains(config);
+ }
+
+ browsing = 1;
+ return 0;
+}
+
+static void client_callback(AvahiClient *c, AvahiClientState state, AVAHI_GCC_UNUSED void * userdata) {
+ Config *config = userdata;
+
+ /* This function might be called when avahi_client_new() has not
+ * returned yet.*/
+ 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;
+
+ avahi_string_list_free(browsed_types);
+ browsed_types = NULL;
+
+ while (services)
+ remove_service(config, services);
+
+ browsing = 0;
+
+ 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_REGISTERING:
case AVAHI_CLIENT_S_RUNNING:
case AVAHI_CLIENT_S_COLLISION:
- ;
+
+ if (!browsing)
+ if (start(config) < 0)
+ avahi_simple_poll_quit(simple_poll);
+
+ 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] <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"
+ "%s [options] <service type>\n"
+ "%s [options] -a\n"
+ "%s [options] -D\n\n"
+ " -h --help Show this help\n"
+ " -V --version Show version\n"
+ " -D --browse-domains Browse for browsing domains instead of services\n"
+ " -a --all Show all services, regardless of the type\n"
+ " -d --domain=DOMAIN The domain to browse in\n"
+ " -v --verbose Enable verbose mode\n"
+ " -t --terminate Terminate after dumping a 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"
+ " -f --no-fail Don't fail if the server is not available\n"
#ifdef HAVE_GDBM
- " -k --no-db-lookup Don't lookup service types\n"
+ " -k --no-db-lookup Don't lookup service types\n"
#endif
-
- , argv0, argv0);
+ , argv0, 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' },
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, 'V' },
+ { "browse-domains", no_argument, NULL, 'D' },
+ { "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' },
+ { "no-fail", no_argument, NULL, 'f' },
#ifdef HAVE_GDBM
- { "no-db-lookup", no_argument, NULL, 'k' },
+ { "no-db-lookup", no_argument, NULL, 'k' },
#endif
{ NULL, 0, NULL, 0 }
};
assert(c);
- c->command = COMMAND_RUN;
+ c->command = COMMAND_BROWSE_SERVICES;
c->verbose =
c->terminate_on_cache_exhausted =
c->terminate_on_all_for_now =
- c->show_all =
c->ignore_local =
- c->resolve = 0;
+ c->resolve =
+ c->no_fail = 0;
c->domain = c->stype = NULL;
#ifdef HAVE_GDBM
#endif
opterr = 0;
- while ((o = getopt_long(argc, argv, "hVd:avtclr"
+ while ((o = getopt_long(argc, argv, "hVd:avtclrDf"
#ifdef HAVE_GDBM
"k"
#endif
case 'V':
c->command = COMMAND_VERSION;
break;
+ case 'a':
+ c->command = COMMAND_BROWSE_ALL_SERVICES;
+ break;
+ case 'D':
+ c->command = COMMAND_BROWSE_DOMAINS;
+ break;
case 'd':
c->domain = avahi_strdup(optarg);
break;
- case 'a':
- c->show_all = 1;
- break;
case 'v':
c->verbose = 1;
break;
case 'r':
c->resolve = 1;
break;
+ case 'f':
+ c->no_fail = 1;
+ break;
#ifdef HAVE_GDBM
case 'k':
c->no_db_lookup = 1;
}
}
- if (c->command == COMMAND_RUN && !c->show_all) {
+ if (c->command == COMMAND_BROWSE_SERVICES) {
if (optind >= argc) {
fprintf(stderr, "Too few arguments\n");
return -1;
ret = 0;
break;
- case COMMAND_RUN:
+ case COMMAND_BROWSE_SERVICES:
+ case COMMAND_BROWSE_ALL_SERVICES:
+ case COMMAND_BROWSE_DOMAINS:
if (!(simple_poll = avahi_simple_poll_new())) {
fprintf(stderr, "Failed to create simple poll object.\n");
if (sigint_install(simple_poll) < 0)
goto fail;
- if (!(client = avahi_client_new(avahi_simple_poll_get(simple_poll), client_callback, NULL, &error))) {
+ 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 (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;
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