X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;ds=sidebyside;f=avahi-daemon%2Fmain.c;h=8c28fd6ec8d786122d1f83cec0e4bb1a507412b5;hb=147cdce70b22ae7cee9fb4fe123db40952f31c9e;hp=761939948fb8beebd2cad7859f589d498ae8db46;hpb=abc3a9efd1124d74155c6a70798d10710b20786d;p=catta diff --git a/avahi-daemon/main.c b/avahi-daemon/main.c index 7619399..8c28fd6 100644 --- a/avahi-daemon/main.c +++ b/avahi-daemon/main.c @@ -1,5 +1,3 @@ -/* $Id$ */ - /*** This file is part of avahi. @@ -67,6 +65,7 @@ #include #include #include +#include #ifdef ENABLE_CHROOT #include "chroot.h" @@ -79,6 +78,7 @@ #include "static-services.h" #include "static-hosts.h" #include "ini-file-parser.h" +#include "sd-daemon.h" #ifdef HAVE_DBUS #include "dbus-protocol.h" @@ -107,6 +107,9 @@ typedef struct { #ifdef HAVE_DBUS int enable_dbus; int fail_on_missing_dbus; + unsigned n_clients_max; + unsigned n_objects_per_client_max; + unsigned n_entries_per_entry_group_max; #endif int drop_root; int set_rlimits; @@ -330,6 +333,7 @@ static void update_browse_domains(void) { l = filter_duplicate_domains(l); avahi_server_set_browse_domains(avahi_server, l); + avahi_string_list_free(l); } static void server_callback(AvahiServer *s, AvahiServerState state, void *userdata) { @@ -351,7 +355,7 @@ static void server_callback(AvahiServer *s, AvahiServerState state, void *userda switch (state) { case AVAHI_SERVER_RUNNING: avahi_log_info("Server startup complete. Host name is %s. Local service cookie is %u.", avahi_server_get_host_name_fqdn(s), avahi_server_get_local_service_cookie(s)); - + sd_notifyf(0, "STATUS=Server startup complete. Host name is %s. Local service cookie is %u.", avahi_server_get_host_name_fqdn(s), avahi_server_get_local_service_cookie(s)); avahi_set_proc_title(argv0, "%s: running [%s]", argv0, avahi_server_get_host_name_fqdn(s)); static_service_add_to_server(); @@ -371,14 +375,16 @@ static void server_callback(AvahiServer *s, AvahiServerState state, void *userda case AVAHI_SERVER_COLLISION: { char *n; - avahi_set_proc_title(argv0, "%s: collision", argv0); - static_service_remove_from_server(); static_hosts_remove_from_server(); remove_dns_server_entry_groups(); n = avahi_alternative_host_name(avahi_server_get_host_name(s)); - avahi_log_warn("Host name conflict, retrying with <%s>", n); + + avahi_log_warn("Host name conflict, retrying with %s", n); + sd_notifyf(0, "STATUS=Host name conflict, retrying with %s", n); + avahi_set_proc_title(argv0, "%s: collision [%s]", argv0, n); + avahi_server_set_host_name(s, n); avahi_free(n); @@ -388,11 +394,14 @@ static void server_callback(AvahiServer *s, AvahiServerState state, void *userda case AVAHI_SERVER_FAILURE: avahi_log_error("Server error: %s", avahi_strerror(avahi_server_errno(s))); + sd_notifyf(0, "STATUS=Server error: %s", avahi_strerror(avahi_server_errno(s))); + avahi_simple_poll_quit(simple_poll_api); break; case AVAHI_SERVER_REGISTERING: + sd_notifyf(0, "STATUS=Registering host name %s", avahi_server_get_host_name_fqdn(s)); avahi_set_proc_title(argv0, "%s: registering [%s]", argv0, avahi_server_get_host_name_fqdn(s)); static_service_remove_from_server(); @@ -528,6 +537,69 @@ static int is_yes(const char *s) { return *s == 'y' || *s == 'Y' || *s == '1' || *s == 't' || *s == 'T'; } +static int parse_unsigned(const char *s, unsigned *u) { + char *e = NULL; + unsigned long ul; + unsigned k; + + errno = 0; + ul = strtoul(s, &e, 0); + + if (!e || *e || errno != 0) + return -1; + + k = (unsigned) ul; + + if ((unsigned long) k != ul) + return -1; + + *u = k; + return 0; +} + +static int parse_usec(const char *s, AvahiUsec *u) { + char *e = NULL; + unsigned long long ull; + AvahiUsec k; + + errno = 0; + ull = strtoull(s, &e, 0); + + if (!e || *e || errno != 0) + return -1; + + k = (AvahiUsec) ull; + + if ((unsigned long long) k != ull) + return -1; + + *u = k; + return 0; +} + +static char *get_machine_id(void) { + int fd; + char buf[32]; + + fd = open("/etc/machine-id", O_RDONLY|O_CLOEXEC|O_NOCTTY); + if (fd == -1 && errno == ENOENT) + fd = open("/var/lib/dbus/machine-id", O_RDONLY|O_CLOEXEC|O_NOCTTY); + if (fd == -1) + return NULL; + + /* File is on a filesystem so we never get EINTR or partial reads */ + if (read(fd, buf, sizeof buf) != sizeof buf) { + close(fd); + return NULL; + } + close(fd); + + /* Contents can be lower, upper and even mixed case so normalize */ + avahi_strdown(buf); + + return avahi_strndup(buf, sizeof buf); +} + static int load_config_file(DaemonConfig *c) { int r = -1; AvahiIniFile *f; @@ -583,6 +655,15 @@ static int load_config_file(DaemonConfig *c) { c->server_config.use_iff_running = is_yes(p->value); else if (strcasecmp(p->key, "disallow-other-stacks") == 0) c->server_config.disallow_other_stacks = is_yes(p->value); + else if (strcasecmp(p->key, "host-name-from-machine-id") == 0) { + if (*(p->value) == 'y' || *(p->value) == 'Y') { + char *machine_id = get_machine_id(); + if (machine_id != NULL) { + avahi_free(c->server_config.host_name); + c->server_config.host_name = machine_id; + } + } + } #ifdef HAVE_DBUS else if (strcasecmp(p->key, "enable-dbus") == 0) { @@ -597,7 +678,87 @@ static int load_config_file(DaemonConfig *c) { } } #endif - else { + else if (strcasecmp(p->key, "allow-interfaces") == 0) { + char **e, **t; + + avahi_string_list_free(c->server_config.allow_interfaces); + c->server_config.allow_interfaces = NULL; + e = avahi_split_csv(p->value); + + for (t = e; *t; t++) + c->server_config.allow_interfaces = avahi_string_list_add(c->server_config.allow_interfaces, *t); + + avahi_strfreev(e); + } else if (strcasecmp(p->key, "deny-interfaces") == 0) { + char **e, **t; + + avahi_string_list_free(c->server_config.deny_interfaces); + c->server_config.deny_interfaces = NULL; + e = avahi_split_csv(p->value); + + for (t = e; *t; t++) + c->server_config.deny_interfaces = avahi_string_list_add(c->server_config.deny_interfaces, *t); + + avahi_strfreev(e); + } else if (strcasecmp(p->key, "ratelimit-interval-usec") == 0) { + AvahiUsec k; + + if (parse_usec(p->value, &k) < 0) { + avahi_log_error("Invalid ratelimit-interval-usec setting %s", p->value); + goto finish; + } + + c->server_config.ratelimit_interval = k; + + } else if (strcasecmp(p->key, "ratelimit-burst") == 0) { + unsigned k; + + if (parse_unsigned(p->value, &k) < 0) { + avahi_log_error("Invalid ratelimit-burst setting %s", p->value); + goto finish; + } + + c->server_config.ratelimit_burst = k; + + } else if (strcasecmp(p->key, "cache-entries-max") == 0) { + unsigned k; + + if (parse_unsigned(p->value, &k) < 0) { + avahi_log_error("Invalid cache-entries-max setting %s", p->value); + goto finish; + } + + c->server_config.n_cache_entries_max = k; +#ifdef HAVE_DBUS + } else if (strcasecmp(p->key, "clients-max") == 0) { + unsigned k; + + if (parse_unsigned(p->value, &k) < 0) { + avahi_log_error("Invalid clients-max setting %s", p->value); + goto finish; + } + + c->n_clients_max = k; + } else if (strcasecmp(p->key, "objects-per-client-max") == 0) { + unsigned k; + + if (parse_unsigned(p->value, &k) < 0) { + avahi_log_error("Invalid objects-per-client-max setting %s", p->value); + goto finish; + } + + c->n_objects_per_client_max = k; + } else if (strcasecmp(p->key, "entries-per-entry-group-max") == 0) { + unsigned k; + + if (parse_unsigned(p->value, &k) < 0) { + avahi_log_error("Invalid entries-per-entry-group-max setting %s", p->value); + goto finish; + } + + c->n_entries_per_entry_group_max = k; +#endif + } else { avahi_log_error("Invalid configuration key \"%s\" in group \"%s\"\n", p->key, g->name); goto finish; } @@ -918,12 +1079,10 @@ static void signal_callback(AvahiWatch *watch, AVAHI_GCC_UNUSED int fd, AVAHI_GC switch (sig) { case SIGINT: - case SIGQUIT: case SIGTERM: avahi_log_info( "Got %s, quitting.", - sig == SIGINT ? "SIGINT" : - (sig == SIGQUIT ? "SIGQUIT" : "SIGTERM")); + sig == SIGINT ? "SIGINT" : "SIGTERM"); avahi_simple_poll_quit(simple_poll_api); break; @@ -947,6 +1106,16 @@ static void signal_callback(AvahiWatch *watch, AVAHI_GCC_UNUSED int fd, AVAHI_GC /* Imported from ../avahi-client/nss-check.c */ int avahi_nss_support(void); +static void ignore_signal(int sig) { + struct sigaction sa; + + memset(&sa, 0, sizeof(sa)); + sa.sa_handler = SIG_IGN; + sa.sa_flags = SA_RESTART; + + sigaction(sig, &sa, NULL); +} + static int run_server(DaemonConfig *c) { int r = -1; int error; @@ -963,6 +1132,8 @@ static int run_server(DaemonConfig *c) { assert(c); + ignore_signal(SIGPIPE); + if (!(nss_support = avahi_nss_support())) avahi_log_warn("WARNING: No NSS support for mDNS detected, consider installing nss-mdns!"); @@ -973,7 +1144,7 @@ static int run_server(DaemonConfig *c) { poll_api = avahi_simple_poll_get(simple_poll_api); - if (daemon_signal_init(SIGINT, SIGQUIT, SIGHUP, SIGTERM, SIGUSR1, 0) < 0) { + if (daemon_signal_init(SIGINT, SIGHUP, SIGTERM, SIGUSR1, 0) < 0) { avahi_log_error("Could not register signal handlers (%s).", strerror(errno)); goto finish; } @@ -988,7 +1159,12 @@ static int run_server(DaemonConfig *c) { #ifdef HAVE_DBUS if (c->enable_dbus) { - if (dbus_protocol_setup(poll_api, config.disable_user_service_publishing, !c->fail_on_missing_dbus + if (dbus_protocol_setup(poll_api, + config.disable_user_service_publishing, + config.n_clients_max, + config.n_objects_per_client_max, + config.n_entries_per_entry_group_max, + !c->fail_on_missing_dbus #ifdef ENABLE_CHROOT && !config.use_chroot #endif @@ -1084,6 +1260,7 @@ static int run_server(DaemonConfig *c) { break; } + r = 0; finish: @@ -1285,7 +1462,7 @@ static void enforce_rlimits(void) { #endif /* the sysctl() call from iface-pfroute.c needs locked memory on FreeBSD */ -#if defined(RLIMIT_MEMLOCK) && !defined(__FreeBSD__) +#if defined(RLIMIT_MEMLOCK) && !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) /* We don't need locked memory */ set_one_rlimit(RLIMIT_MEMLOCK, 0, "RLIMIT_MEMLOCK"); #endif @@ -1326,6 +1503,9 @@ int main(int argc, char *argv[]) { #ifdef HAVE_DBUS config.enable_dbus = 1; config.fail_on_missing_dbus = 1; + config.n_clients_max = 0; + config.n_objects_per_client_max = 0; + config.n_entries_per_entry_group_max = 0; #endif config.drop_root = 1; @@ -1433,10 +1613,12 @@ int main(int argc, char *argv[]) { if (config.use_syslog || config.daemonize) daemon_log_use = DAEMON_LOG_SYSLOG; - if (daemon_close_all(-1) < 0) { - avahi_log_error("Failed to close remaining file descriptors: %s", strerror(errno)); - goto finish; - } + if (sd_listen_fds(0) <= 0) + if (daemon_close_all(-1) < 0) + avahi_log_warn("Failed to close all remaining file descriptors: %s", strerror(errno)); + + daemon_reset_sigs(-1); + daemon_unblock_sigs(-1); if (make_runtime_dir() < 0) goto finish; @@ -1480,11 +1662,14 @@ int main(int argc, char *argv[]) { } #endif avahi_log_info("%s "PACKAGE_VERSION" starting up.", argv0); - + sd_notifyf(0, "STATUS=%s "PACKAGE_VERSION" starting up.", argv0); avahi_set_proc_title(argv0, "%s: starting up", argv0); if (run_server(&config) == 0) r = 0; + + avahi_log_info("%s "PACKAGE_VERSION" exiting.", argv0); + sd_notifyf(0, "STATUS=%s "PACKAGE_VERSION" exiting.", argv0); } finish: