From 93ac6c737b2566e76162ad70c35c0167de82c76b Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Wed, 16 Nov 2005 22:34:12 +0000 Subject: Implement avahi-publish{-address, service} in C git-svn-id: file:///home/lennart/svn/public/avahi/trunk@988 941a03a8-eaeb-0310-b9a0-b1bbd8fe43fe --- avahi-python/Makefile.am | 12 - avahi-python/avahi-publish-address.in | 96 -------- avahi-python/avahi-publish-service.in | 134 ----------- avahi-utils/Makefile.am | 10 +- avahi-utils/avahi-browse.c | 8 +- avahi-utils/avahi-publish.c | 417 ++++++++++++++++++++++++++++++++++ avahi-utils/avahi-resolve.c | 3 +- 7 files changed, 431 insertions(+), 249 deletions(-) delete mode 100755 avahi-python/avahi-publish-address.in delete mode 100755 avahi-python/avahi-publish-service.in create mode 100644 avahi-utils/avahi-publish.c diff --git a/avahi-python/Makefile.am b/avahi-python/Makefile.am index efb529e..7f4980a 100644 --- a/avahi-python/Makefile.am +++ b/avahi-python/Makefile.am @@ -23,8 +23,6 @@ AM_CFLAGS=-I$(top_srcdir) AM_CFLAGS+='-DDEBUG_TRAP=__asm__("int $$3")' EXTRA_DIST = \ - avahi-publish-address.in \ - avahi-publish-service.in \ avahi-bookmarks.in \ avahi-discover.in \ avahi-discover.desktop.in @@ -36,8 +34,6 @@ if HAVE_PYTHON_DBUS if HAVE_PYGTK pythonscripts = \ - avahi-publish-address \ - avahi-publish-service \ avahi-bookmarks \ avahi-discover @@ -53,14 +49,6 @@ avahi-discover: avahi-discover.in -e 's,@interfacesdir\@,$(interfacesdir),g' $< > $@ chmod +x $@ -avahi-publish-address: avahi-publish-address.in - sed -e 's,@PYTHON\@,$(PYTHON),g' $< > $@ - chmod +x $@ - -avahi-publish-service: avahi-publish-service.in - sed -e 's,@PYTHON\@,$(PYTHON),g' $< > $@ - chmod +x $@ - avahi-bookmarks: avahi-bookmarks.in sed -e 's,@PYTHON\@,$(PYTHON),g' $< > $@ chmod +x $@ diff --git a/avahi-python/avahi-publish-address.in b/avahi-python/avahi-publish-address.in deleted file mode 100755 index 4ffebd7..0000000 --- a/avahi-python/avahi-publish-address.in +++ /dev/null @@ -1,96 +0,0 @@ -#!@PYTHON@ -# -*-python-*- -# $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 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 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. - -import sys, getopt, string - -try: - import avahi, gobject, dbus -except ImportError: - print "Sorry, to use this tool you need to install Avahi, pygtk and python-dbus." - sys.exit(1) - -try: - import dbus.glib -except ImportError, e: - pass - -def usage(retval = 0): - print "%s
" % sys.argv[0] - sys.exit(retval) - -if len(sys.argv) != 3: - usage(2) - -name = sys.argv[1] -address = sys.argv[2] - -group = None -n_rename = 0 - -def remove_address(): - global group - - if not (group is None): - group.Free() - group = None - -def add_address(): - global server, group, name, address - assert group is None - - print "Adding address '%s' for '%s' ..." % (name, address) - group = dbus.Interface(bus.get_object(avahi.DBUS_NAME, server.EntryGroupNew()), avahi.DBUS_INTERFACE_ENTRY_GROUP) - group.connect_to_signal('StateChanged', entry_group_state_changed) - group.AddAddress(avahi.IF_UNSPEC, avahi.PROTO_UNSPEC, dbus.UInt32(0), name, address) - group.Commit() - -def entry_group_state_changed(state): - global name, server, n_rename, main_loop - - if state == avahi.ENTRY_GROUP_ESTABLISHED: - print "Address established." - elif state == avahi.ENTRY_GROUP_COLLISION: - - n_rename = n_rename + 1 - if n_rename >= 12: - print "ERROR: No suitable name found after %i retries, exiting." % n_rename - main_loop.quit() - else: - hn = name.split('.') - hn[0] = server.GetAlternativeHostName(hn[0]) - name = string.join(hn, '.') - print "WARNING: Address/host name collision, changing name to '%s' ..." % name - remove_address() - add_address() - -main_loop = gobject.MainLoop() - -bus = dbus.SystemBus() -server = dbus.Interface(bus.get_object(avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER), avahi.DBUS_INTERFACE_SERVER) - -add_address() - -try: - main_loop.run() -except KeyboardInterrupt, k: - pass - -remove_address() diff --git a/avahi-python/avahi-publish-service.in b/avahi-python/avahi-publish-service.in deleted file mode 100755 index 3f40fd0..0000000 --- a/avahi-python/avahi-publish-service.in +++ /dev/null @@ -1,134 +0,0 @@ -#!@PYTHON@ -# -*-python-*- -# $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 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 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. - -import sys, getopt - -try: - import avahi, gobject, dbus -except ImportError: - print "Sorry, to use this tool you need to install Avahi, pygtk and python-dbus." - sys.exit(1) - -try: - import dbus.glib -except ImportError, e: - pass - -def usage(retval = 0): - print "%s [options] [ ...]\n" % sys.argv[0] - print " -h --help Show this help" - print " -d --domain Domain where to register this service" - print " -H --host Host where this service resides" - sys.exit(retval) - -try: - opts, args = getopt.getopt(sys.argv[1:], "hd:H:", ["help", "domain=", "host="]) -except getopt.GetoptError: - usage(2) - -domain = "" -host = "" - -for o, a in opts: - if o in ("-h", "--help"): - usage() - - if o in ("-d", "--domain"): - domain = a - - if o in ("-H", "--host"): - host = a - -if len(args) < 3: - usage(2) - -name = args[0] -stype = args[1] -port = int(args[2]) -txt = args[3:] - -# python-dbus doesn't allow transmission of empty arrays, therefore we "fix" it with a bogus entry -if len(txt) == 0: - txt.append("python-dbus=brain-damage") - -group = None -n_rename = 0 - -def remove_service(): - global group - - if not group is None: - group.Reset() - -def add_service(): - global server, group, name, stype, domain, host, port, txt - - if group is None: - group = dbus.Interface(bus.get_object(avahi.DBUS_NAME, server.EntryGroupNew()), avahi.DBUS_INTERFACE_ENTRY_GROUP) - group.connect_to_signal('StateChanged', entry_group_state_changed) - - assert group.IsEmpty() - - print "Adding service '%s' of type '%s' ..." % (name, stype) - - group.AddService(avahi.IF_UNSPEC, avahi.PROTO_UNSPEC, dbus.UInt32(0), name, stype, domain, host, dbus.UInt16(port), avahi.string_array_to_txt_array(txt)) - group.Commit() - -def entry_group_state_changed(state): - global name, server, n_rename - -# print "state change: %i" % state - - if state == avahi.ENTRY_GROUP_ESTABLISHED: - print "Service established." - elif state == avahi.ENTRY_GROUP_COLLISION: - - n_rename = n_rename + 1 - if n_rename >= 12: - print "ERROR: No suitable service name found after %i retries, exiting." % n_rename - main_loop.quit() - else: - name = server.GetAlternativeServiceName(name) - print "WARNING: Service name collision, changing name to '%s' ..." % name - remove_service() - add_service() - -def server_state_changed(state): - if state == avahi.SERVER_COLLISION: - print "WARNING: Server name collision" - remove_service() - elif state == avahi.SERVER_RUNNING: - add_service() - -main_loop = gobject.MainLoop() - -bus = dbus.SystemBus() -server = dbus.Interface(bus.get_object(avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER), avahi.DBUS_INTERFACE_SERVER) -server.connect_to_signal("StateChanged", server_state_changed) -server_state_changed(server.GetState()) - -try: - main_loop.run() -except KeyboardInterrupt, k: - pass - -if not group is None: - group.Free() diff --git a/avahi-utils/Makefile.am b/avahi-utils/Makefile.am index 5d6bb9f..dc3a127 100644 --- a/avahi-utils/Makefile.am +++ b/avahi-utils/Makefile.am @@ -24,7 +24,7 @@ AM_CFLAGS+='-DDEBUG_TRAP=__asm__("int $$3")' if HAVE_DBUS -bin_PROGRAMS = avahi-browse avahi-resolve +bin_PROGRAMS = avahi-browse avahi-resolve avahi-publish avahi_browse_SOURCES = avahi-browse.c sigint.c sigint.h avahi_browse_CFLAGS = $(AM_CFLAGS) @@ -40,11 +40,17 @@ avahi_resolve_SOURCES = avahi-resolve.c sigint.c sigint.h avahi_resolve_CFLAGS = $(AM_CFLAGS) avahi_resolve_LDADD = $(AM_LDADD) ../avahi-client/libavahi-client.la ../avahi-common/libavahi-common.la +avahi_publish_SOURCES = avahi-publish.c sigint.c sigint.h +avahi_publish_CFLAGS = $(AM_CFLAGS) +avahi_publish_LDADD = $(AM_LDADD) ../avahi-client/libavahi-client.la ../avahi-common/libavahi-common.la + install-exec-local: cd $(DESTDIR)/$(bindir) && \ rm -f avahi-resolve-host-name avahi-resolve-address avahi-browse-domains && \ $(LN_S) avahi-resolve avahi-resolve-host-name && \ $(LN_S) avahi-resolve avahi-resolve-address && \ - $(LN_S) avahi-browse avahi-browse-domains + $(LN_S) avahi-browse avahi-browse-domains && \ + $(LN_S) avahi-publish avahi-publish-address && \ + $(LN_S) avahi-publish avahi-publish-service endif diff --git a/avahi-utils/avahi-browse.c b/avahi-utils/avahi-browse.c index e9c4073..a5d9d25 100644 --- a/avahi-utils/avahi-browse.c +++ b/avahi-utils/avahi-browse.c @@ -568,7 +568,7 @@ static void client_callback(AvahiClient *c, AvahiClientState state, AVAHI_GCC_UN if (config->verbose) fprintf(stderr, "Waiting for daemon ...\n"); - break; + break; } } @@ -593,10 +593,11 @@ static void help(FILE *f, const char *argv0) { " -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" + " -f --no-fail Don't fail if the daemon 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 + ); } static int parse_command_line(Config *c, const char *argv0, int argc, char *argv[]) { @@ -656,6 +657,7 @@ static int parse_command_line(Config *c, const char *argv0, int argc, char *argv c->command = COMMAND_BROWSE_DOMAINS; break; case 'd': + avahi_free(c->domain); c->domain = avahi_strdup(optarg); break; case 'v': diff --git a/avahi-utils/avahi-publish.c b/avahi-utils/avahi-publish.c new file mode 100644 index 0000000..e0dea9f --- /dev/null +++ b/avahi-utils/avahi-publish.c @@ -0,0 +1,417 @@ +/* $Id$ */ + +/*** + 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 +#endif + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +#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 []\n" + "%s [options] %s
\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; +} diff --git a/avahi-utils/avahi-resolve.c b/avahi-utils/avahi-resolve.c index 477a4a5..2dafbf0 100644 --- a/avahi-utils/avahi-resolve.c +++ b/avahi-utils/avahi-resolve.c @@ -167,8 +167,7 @@ static void help(FILE *f, const char *argv0) { " -a --address Resolve address\n" " -v --verbose Enable verbose mode\n" " -6 Lookup IPv6 address\n" - " -4 Lookup IPv4 address\n" - , + " -4 Lookup IPv4 address\n", argv0, strstr(argv0, "address") ? "[-a]" : "-a", argv0, strstr(argv0, "host-name") ? "[-n]" : "-n"); } -- cgit