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-rw-r--r--avahi-utils/avahi-resolve.c339
1 files changed, 339 insertions, 0 deletions
diff --git a/avahi-utils/avahi-resolve.c b/avahi-utils/avahi-resolve.c
new file mode 100644
index 0000000..f634429
--- /dev/null
+++ b/avahi-utils/avahi-resolve.c
@@ -0,0 +1,339 @@
+/* $Id$ */
+
+/***
+ 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 <sys/socket.h>
+#include <net/if.h>
+#include <locale.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"
+
+#ifdef HAVE_GDBM
+#include "stdb.h"
+#endif
+
+typedef enum {
+ COMMAND_HELP,
+ COMMAND_VERSION,
+ COMMAND_RESOLVE_HOST_NAME,
+ COMMAND_RESOLVE_ADDRESS
+} Command;
+
+typedef struct Config {
+ int verbose;
+ Command command;
+ AvahiProtocol proto;
+} Config;
+
+static AvahiSimplePoll *simple_poll = NULL;
+static AvahiClient *client = NULL;
+
+static int n_resolving = 0;
+
+static void host_name_resolver_callback(
+ AvahiHostNameResolver *r,
+ AVAHI_GCC_UNUSED AvahiIfIndex interface,
+ AVAHI_GCC_UNUSED AvahiProtocol protocol,
+ AvahiResolverEvent event,
+ const char *name,
+ const AvahiAddress *a,
+ AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
+ AVAHI_GCC_UNUSED void *userdata) {
+
+ assert(r);
+
+ switch (event) {
+ case AVAHI_RESOLVER_FOUND: {
+ char address[AVAHI_ADDRESS_STR_MAX];
+
+ avahi_address_snprint(address, sizeof(address), a);
+
+ printf("%s\t%s\n", name, address);
+
+ break;
+ }
+
+ case AVAHI_RESOLVER_FAILURE:
+
+ fprintf(stderr, "Failed to resolve host name '%s': %s\n", name, avahi_strerror(avahi_client_errno(client)));
+ break;
+ }
+
+
+ avahi_host_name_resolver_free(r);
+
+ assert(n_resolving > 0);
+ n_resolving--;
+
+ if (n_resolving <= 0)
+ avahi_simple_poll_quit(simple_poll);
+}
+
+static void address_resolver_callback(
+ AvahiAddressResolver *r,
+ AVAHI_GCC_UNUSED AvahiIfIndex interface,
+ AVAHI_GCC_UNUSED AvahiProtocol protocol,
+ AvahiResolverEvent event,
+ const AvahiAddress *a,
+ const char *name,
+ AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
+ AVAHI_GCC_UNUSED void *userdata) {
+
+ char address[AVAHI_ADDRESS_STR_MAX];
+ assert(r);
+
+ avahi_address_snprint(address, sizeof(address), a);
+
+ switch (event) {
+ case AVAHI_RESOLVER_FOUND:
+
+ printf("%s\t%s\n", address, name);
+ break;
+
+ case AVAHI_RESOLVER_FAILURE:
+
+ fprintf(stderr, "Failed to resolve address '%s': %s\n", address, avahi_strerror(avahi_client_errno(client)));
+ break;
+ }
+
+
+ avahi_address_resolver_free(r);
+
+ assert(n_resolving > 0);
+ n_resolving--;
+
+ if (n_resolving <= 0)
+ avahi_simple_poll_quit(simple_poll);
+}
+
+static void client_callback(AvahiClient *c, AvahiClientState state, AVAHI_GCC_UNUSED void * userdata) {
+ switch (state) {
+ case AVAHI_CLIENT_FAILURE:
+ 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:
+ case AVAHI_CLIENT_CONNECTING:
+ ;
+ }
+}
+
+static void help(FILE *f, const char *argv0) {
+ fprintf(f,
+ "%s [options] %s <name ...>\n"
+ "%s [options] %s <address ... >\n\n"
+ " -h --help Show this help\n"
+ " -V --version Show version\n"
+ " -n --name Resolve host name\n"
+ " -a --address Resolve address\n"
+ " -v --verbose Enable verbose mode\n"
+ " -6 Lookup IPv6 address\n"
+ " -4 Lookup IPv4 address\n"
+ ,
+ argv0, strstr(argv0, "address") ? "-n" : "[-n]",
+ argv0, strstr(argv0, "address") ? "[-a]" : "-a");
+}
+
+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' },
+ { "name", no_argument, NULL, 'n' },
+ { "address", no_argument, NULL, 'a' },
+ { "verbose", no_argument, NULL, 'v' },
+ { NULL, 0, NULL, 0 }
+ };
+
+ assert(c);
+
+ c->command = strstr(argv[0], "address") ? COMMAND_RESOLVE_ADDRESS : COMMAND_RESOLVE_HOST_NAME;
+ c->proto = AVAHI_PROTO_UNSPEC;
+ c->verbose = 0;
+
+ opterr = 0;
+ while ((o = getopt_long(argc, argv, "hVnav46", long_options, NULL)) >= 0) {
+
+ switch(o) {
+ case 'h':
+ c->command = COMMAND_HELP;
+ break;
+ case 'V':
+ c->command = COMMAND_VERSION;
+ break;
+ case 'n':
+ c->command = COMMAND_RESOLVE_HOST_NAME;
+ break;
+ case 'a':
+ c->command = COMMAND_RESOLVE_ADDRESS;
+ break;
+ case 'v':
+ c->verbose = 1;
+ break;
+ case '4':
+ c->proto = AVAHI_PROTO_INET;
+ break;
+ case '6':
+ c->proto = AVAHI_PROTO_INET6;
+ break;
+ default:
+ fprintf(stderr, "Invalid command line argument: %c\n", o);
+ return -1;
+ }
+ }
+
+ if (c->command == COMMAND_RESOLVE_ADDRESS || c->command == COMMAND_RESOLVE_HOST_NAME) {
+ if (optind >= argc) {
+ fprintf(stderr, "Too few arguments\n");
+ return -1;
+ }
+ }
+
+ 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, 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_RESOLVE_HOST_NAME:
+ case COMMAND_RESOLVE_ADDRESS: {
+ int i;
+
+ 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), 0, 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", version, hn);
+ }
+
+ n_resolving = 0;
+
+ for (i = optind; i < argc; i++) {
+
+ if (config.command == COMMAND_RESOLVE_HOST_NAME) {
+
+ if (!(avahi_host_name_resolver_new(client, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, argv[i], config.proto, 0, host_name_resolver_callback, NULL))) {
+ fprintf(stderr, "Failed to create host name resolver: %s\n", avahi_strerror(avahi_client_errno(client)));
+ goto fail;
+ }
+
+ } else {
+ AvahiAddress a;
+
+ assert(config.command == COMMAND_RESOLVE_ADDRESS);
+
+ if (!avahi_address_parse(argv[i], AVAHI_PROTO_UNSPEC, &a)) {
+ fprintf(stderr, "Failed to parse address '%s'\n", argv[i]);
+ goto fail;
+ }
+
+ if (!(avahi_address_resolver_new(client, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, &a, 0, address_resolver_callback, NULL))) {
+ fprintf(stderr, "Failed to create address resolver: %s\n", avahi_strerror(avahi_client_errno(client)));
+ goto fail;
+ }
+ }
+
+ n_resolving++;
+ }
+
+ 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);
+
+ return ret;
+}
generated by cgit (git 2.34.1) at 2024-05-05 06:42:13 +0000