static void add_static_host_to_server(StaticHost *h)
{
if (!h->group)
if (!(h->group = avahi_s_entry_group_new (avahi_server, entry_group_callback, h))) {
avahi_log_error("avahi_s_entry_group_new() failed: %s", avahi_strerror(avahi_server_errno(avahi_server)));
return;
}
if (avahi_s_entry_group_is_empty(h->group)) {
AvahiProtocol p;
int err;
const AvahiServerConfig *config;
config = avahi_server_get_config(avahi_server);
p = (h->address.proto == AVAHI_PROTO_INET && config->publish_a_on_ipv6) ||
(h->address.proto == AVAHI_PROTO_INET6 && config->publish_aaaa_on_ipv4) ? AVAHI_PROTO_UNSPEC : h->address.proto;
if ((err = avahi_server_add_address(avahi_server, h->group, AVAHI_IF_UNSPEC, p, 0, h->host, &h->address)) < 0) {
avahi_log_error ("Static host name %s: avahi_server_add_address failure: %s", h->host, avahi_strerror(err));
return;
}
avahi_s_entry_group_commit (h->group);
}
}
int avahi_caps_reduce(void) {
int ret = 0;
cap_t caps;
static cap_value_t cap_values[] = { CAP_SYS_CHROOT, CAP_SETUID, CAP_SETGID };
/* Let's reduce our caps to the minimum set and tell Linux to keep
* them across setuid(). This is called before we drop
* privileges. */
caps = cap_init();
assert(caps);
cap_clear(caps);
cap_set_flag(caps, CAP_EFFECTIVE, 3, cap_values, CAP_SET);
cap_set_flag(caps, CAP_PERMITTED, 3, cap_values, CAP_SET);
if (cap_set_proc(caps) < 0) {
avahi_log_error("cap_set_proc() failed: %s", strerror(errno));
ret = -1;
}
cap_free(caps);
/* Retain capabilities across setuid() */
if (prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0) < 0) {
avahi_log_error("prctl(PR_SET_KEEPCAPS) failed: %s", strerror(errno));
ret = -1;
}
return ret;
}
int avahi_caps_reduce2(void) {
int ret = 0;
cap_t caps;
static cap_value_t cap_values[] = { CAP_SYS_CHROOT };
/* Reduce our caps to the bare minimum and tell Linux not to keep
* them across setuid(). This is called after we drop
* privileges. */
/* No longer retain caps across setuid() */
if (prctl(PR_SET_KEEPCAPS, 0, 0, 0, 0) < 0) {
avahi_log_error("prctl(PR_SET_KEEPCAPS) failed: %s", strerror(errno));
ret = -1;
}
caps = cap_init();
assert(caps);
cap_clear(caps);
/* setuid() zeroed our effective caps, let's get them back */
cap_set_flag(caps, CAP_EFFECTIVE, 1, cap_values, CAP_SET);
cap_set_flag(caps, CAP_PERMITTED, 1, cap_values, CAP_SET);
if (cap_set_proc(caps) < 0) {
avahi_log_error("cap_set_proc() failed: %s", strerror(errno));
ret = -1;
}
cap_free(caps);
return ret;
}
AvahiCache *avahi_cache_new(AvahiServer *server, AvahiInterface *iface) {
AvahiCache *c;
assert(server);
if (!(c = avahi_new(AvahiCache, 1))) {
avahi_log_error(__FILE__": Out of memory.");
return NULL; /* OOM */
}
c->server = server;
c->interface = iface;
if (!(c->hashmap = avahi_hashmap_new((AvahiHashFunc) avahi_key_hash, (AvahiEqualFunc) avahi_key_equal, NULL, NULL))) {
avahi_log_error(__FILE__": Out of memory.");
avahi_free(c);
return NULL; /* OOM */
}
AVAHI_LLIST_HEAD_INIT(AvahiCacheEntry, c->entries);
c->n_entries = 0;
c->last_rand_timestamp = 0;
return c;
}
AvahiNetlink *avahi_netlink_new(const AvahiPoll *poll_api, uint32_t groups, void (*cb) (AvahiNetlink *nl, struct nlmsghdr *n, void* userdata), void* userdata) {
int fd = -1;
struct sockaddr_nl addr;
AvahiNetlink *nl = NULL;
assert(poll_api);
assert(cb);
if ((fd = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE)) < 0) {
avahi_log_error(__FILE__": socket(PF_NETLINK): %s", strerror(errno));
return NULL;
}
memset(&addr, 0, sizeof(addr));
addr.nl_family = AF_NETLINK;
addr.nl_groups = groups;
addr.nl_pid = getpid();
if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
avahi_log_error(__FILE__": bind(): %s", strerror(errno));
goto fail;
}
if (!(nl = avahi_new(AvahiNetlink, 1))) {
avahi_log_error(__FILE__": avahi_new() failed.");
goto fail;
}
nl->poll_api = poll_api;
nl->fd = fd;
nl->seq = 0;
nl->callback = cb;
nl->userdata = userdata;
if (!(nl->buffer = avahi_new(uint8_t, nl->buffer_length = 64*1024))) {
avahi_log_error(__FILE__": avahi_new() failed.");
goto fail;
}
if (!(nl->watch = poll_api->watch_new(poll_api, fd, AVAHI_WATCH_IN, socket_event, nl))) {
avahi_log_error(__FILE__": Failed to create watch.");
goto fail;
}
return nl;
fail:
if (fd >= 0)
close(fd);
if (nl) {
avahi_free(nl->buffer);
avahi_free(nl);
}
return NULL;
}
void static_service_load(int in_chroot) {
StaticServiceGroup *g, *n;
glob_t globbuf;
int globret;
char **p;
for (g = groups; g; g = n) {
struct stat st;
n = g->groups_next;
if (stat(g->filename, &st) < 0) {
if (errno == ENOENT)
avahi_log_info("Service group file %s vanished, removing services.", g->filename);
else
avahi_log_warn("Failed to stat() file %s, ignoring: %s", g->filename, strerror(errno));
static_service_group_free(g);
} else if (st.st_mtime != g->mtime) {
avahi_log_info("Service group file %s changed, reloading.", g->filename);
if (static_service_group_load(g) < 0) {
avahi_log_warn("Failed to load service group file %s, removing service.", g->filename);
static_service_group_free(g);
}
}
}
memset(&globbuf, 0, sizeof(globbuf));
if ((globret = glob(in_chroot ? "/services/*.service" : AVAHI_SERVICE_DIR "/*.service", GLOB_ERR, NULL, &globbuf)) != 0)
switch (globret) {
#ifdef GLOB_NOSPACE
case GLOB_NOSPACE:
avahi_log_error("Not enough memory to read service directory "AVAHI_SERVICE_DIR".");
break;
#endif
#ifdef GLOB_NOMATCH
case GLOB_NOMATCH:
avahi_log_info("No service file found in "AVAHI_SERVICE_DIR".");
break;
#endif
default:
avahi_log_error("Failed to read "AVAHI_SERVICE_DIR".");
break;
}
else {
for (p = globbuf.gl_pathv; *p; p++)
load_file(*p);
globfree(&globbuf);
}
}
static int make_runtime_dir(void) {
int r = -1;
mode_t u;
int reset_umask = 0;
struct passwd *pw;
struct group * gr;
struct stat st;
//Edison modify username 20131023
char dut_user[128];
memset(dut_user, 0, 128);
strncpy(dut_user, nvram_safe_get("http_username"), 128);
if (!(pw = getpwnam(dut_user))) {
avahi_log_error( "Failed to find user '%s'.",dut_user);
return -1;
}
if (!(gr = getgrnam(AVAHI_GROUP))) {
avahi_log_error( "Failed to find group '"AVAHI_GROUP"'.");
return -1;
}
u = umask(0000);
reset_umask = 1;
if (mkdir(AVAHI_DAEMON_RUNTIME_DIR, 0755) < 0 && errno != EEXIST) {
avahi_log_error("mkdir(\""AVAHI_DAEMON_RUNTIME_DIR"\"): %s", strerror(errno));
goto fail;
}
chown(AVAHI_DAEMON_RUNTIME_DIR, pw->pw_uid, gr->gr_gid);
if (stat(AVAHI_DAEMON_RUNTIME_DIR, &st) < 0) {
avahi_log_error("stat(): %s\n", strerror(errno));
goto fail;
}
if (!S_ISDIR(st.st_mode) || st.st_uid != pw->pw_uid || st.st_gid != gr->gr_gid) {
avahi_log_error("Failed to create runtime directory "AVAHI_DAEMON_RUNTIME_DIR".");
goto fail;
}
r = 0;
fail:
if (reset_umask)
umask(u);
return r;
}
static AvahiSEntryGroup* add_dns_servers(AvahiServer *s, AvahiSEntryGroup* g, char **l) {
char **p;
assert(s);
assert(l);
if (!g)
g = avahi_s_entry_group_new(s, NULL, NULL);
assert(avahi_s_entry_group_is_empty(g));
for (p = l; *p; p++) {
AvahiAddress a;
if (!avahi_address_parse(*p, AVAHI_PROTO_UNSPEC, &a))
avahi_log_warn("Failed to parse address '%s', ignoring.", *p);
else
if (avahi_server_add_dns_server_address(s, g, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, 0, NULL, AVAHI_DNS_SERVER_RESOLVE, &a, 53) < 0) {
avahi_s_entry_group_free(g);
avahi_log_error("Failed to add DNS server address: %s", avahi_strerror(avahi_server_errno(s)));
return NULL;
}
}
avahi_s_entry_group_commit(g);
return g;
}
static void new_announcer(AvahiServer *s, AvahiInterface *i, AvahiEntry *e) {
AvahiAnnouncer *a;
assert(s);
assert(i);
assert(e);
assert(!e->dead);
if (!avahi_interface_match(i, e->interface, e->protocol) || !i->announcing || !avahi_entry_is_commited(e))
return;
/* We don't want duplicate announcers */
if (get_announcer(s, e, i))
return;
if ((!(a = avahi_new(AvahiAnnouncer, 1)))) {
avahi_log_error(__FILE__": Out of memory.");
return;
}
a->server = s;
a->interface = i;
a->entry = e;
a->time_event = NULL;
AVAHI_LLIST_PREPEND(AvahiAnnouncer, by_interface, i->announcers, a);
AVAHI_LLIST_PREPEND(AvahiAnnouncer, by_entry, e->announcers, a);
go_to_initial_state(a);
}
void avahi_dbus_entry_group_callback(AvahiServer *s, AvahiSEntryGroup *g, AvahiEntryGroupState state, void* userdata) {
EntryGroupInfo *i = userdata;
DBusMessage *m;
int32_t t;
const char *e;
assert(s);
assert(g);
assert(i);
m = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "StateChanged");
if (!m) {
avahi_log_error("Failed allocate message");
return;
}
t = (int32_t) state;
if (state == AVAHI_ENTRY_GROUP_FAILURE)
e = avahi_error_number_to_dbus(avahi_server_errno(s));
else if (state == AVAHI_ENTRY_GROUP_COLLISION)
e = AVAHI_DBUS_ERR_COLLISION;
else
e = AVAHI_DBUS_ERR_OK;
dbus_message_append_args(
m,
DBUS_TYPE_INT32, &t,
DBUS_TYPE_STRING, &e,
DBUS_TYPE_INVALID);
dbus_message_set_destination(m, i->client->name);
dbus_connection_send(server->bus, m, NULL);
dbus_message_unref(m);
}
static AvahiResponseJob* job_new(AvahiResponseScheduler *s, AvahiRecord *record, AvahiResponseJobState state) {
AvahiResponseJob *rj;
assert(s);
assert(record);
if (!(rj = avahi_new(AvahiResponseJob, 1))) {
avahi_log_error(__FILE__": Out of memory");
return NULL;
}
rj->scheduler = s;
rj->record = avahi_record_ref(record);
rj->time_event = NULL;
rj->flush_cache = 0;
rj->querier_valid = 0;
if ((rj->state = state) == AVAHI_SCHEDULED)
AVAHI_LLIST_PREPEND(AvahiResponseJob, jobs, s->jobs, rj);
else if (rj->state == AVAHI_DONE)
AVAHI_LLIST_PREPEND(AvahiResponseJob, jobs, s->history, rj);
else /* rj->state == AVAHI_SUPPRESSED */
AVAHI_LLIST_PREPEND(AvahiResponseJob, jobs, s->suppressed, rj);
return rj;
}
int avahi_netlink_work(AvahiNetlink *nl, int block) {
ssize_t bytes;
struct nlmsghdr *p;
assert(nl);
if ((bytes = recv(nl->fd, nl->buffer, nl->buffer_length, block ? 0 : MSG_DONTWAIT)) < 0) {
if (errno == EAGAIN || errno == EINTR)
return 0;
avahi_log_error(__FILE__": recv() failed: %s", strerror(errno));
return -1;
}
p = (struct nlmsghdr *) nl->buffer;
assert(nl->callback);
for (; bytes > 0; p = NLMSG_NEXT(p, bytes)) {
if (!NLMSG_OK(p, (size_t) bytes)) {
avahi_log_warn(__FILE__": packet truncated");
return -1;
}
nl->callback(nl, p, nl->userdata);
}
return 0;
}
static void entry_group_callback(AvahiServer *s, AVAHI_GCC_UNUSED AvahiSEntryGroup *eg, AvahiEntryGroupState state, void* userdata) {
StaticHost *h;
assert(s);
assert(eg);
h = userdata;
switch (state) {
case AVAHI_ENTRY_GROUP_COLLISION:
avahi_log_error("Host name conflict for \"%s\", not established.", h->host);
break;
case AVAHI_ENTRY_GROUP_ESTABLISHED:
avahi_log_notice ("Static host name \"%s\" successfully established.", h->host);
break;
case AVAHI_ENTRY_GROUP_FAILURE:
avahi_log_notice ("Failed to establish static host name \"%s\": %s.", h->host, avahi_strerror (avahi_server_errno (s)));
break;
case AVAHI_ENTRY_GROUP_UNCOMMITED:
case AVAHI_ENTRY_GROUP_REGISTERING:
;
}
}
static int make_runtime_dir(void) {
int r = -1;
mode_t u;
int reset_umask = 0;
struct passwd *pw;
struct group * gr;
struct stat st;
if (!(pw = getpwnam(AVAHI_USER))) {
avahi_log_error( "Failed to find user '"AVAHI_USER"'.");
goto fail;
}
if (!(gr = getgrnam(AVAHI_GROUP))) {
avahi_log_error( "Failed to find group '"AVAHI_GROUP"'.");
goto fail;
}
u = umask(0000);
reset_umask = 1;
if (mkdir(AVAHI_DAEMON_RUNTIME_DIR, 0755) < 0 && errno != EEXIST) {
avahi_log_error("mkdir(\""AVAHI_DAEMON_RUNTIME_DIR"\"): %s", strerror(errno));
goto fail;
}
chown(AVAHI_DAEMON_RUNTIME_DIR, pw->pw_uid, gr->gr_gid);
if (stat(AVAHI_DAEMON_RUNTIME_DIR, &st) < 0) {
avahi_log_error("stat(): %s\n", strerror(errno));
goto fail;
}
if (!S_ISDIR(st.st_mode) || st.st_uid != pw->pw_uid || st.st_gid != gr->gr_gid) {
avahi_log_error("Failed to create runtime directory "AVAHI_DAEMON_RUNTIME_DIR".");
goto fail;
}
r = 0;
fail:
if (reset_umask)
umask(u);
return r;
}
int avahi_netlink_work(AvahiNetlink *nl, int block) {
ssize_t bytes;
struct msghdr smsg;
struct cmsghdr *cmsg;
struct ucred *cred;
struct iovec iov;
struct nlmsghdr *p;
char cred_msg[CMSG_SPACE(sizeof(struct ucred))];
assert(nl);
iov.iov_base = nl->buffer;
iov.iov_len = nl->buffer_length;
smsg.msg_name = NULL;
smsg.msg_namelen = 0;
smsg.msg_iov = &iov;
smsg.msg_iovlen = 1;
smsg.msg_control = cred_msg;
smsg.msg_controllen = sizeof(cred_msg);
smsg.msg_flags = (block ? 0 : MSG_DONTWAIT);
if ((bytes = recvmsg(nl->fd, &smsg, 0)) < 0) {
if (errno == EAGAIN || errno == EINTR)
return 0;
avahi_log_error(__FILE__": recvmsg() failed: %s", strerror(errno));
return -1;
}
cmsg = CMSG_FIRSTHDR(&smsg);
if (!cmsg || cmsg->cmsg_type != SCM_CREDENTIALS) {
avahi_log_warn("No sender credentials received, ignoring data.");
return -1;
}
cred = (struct ucred*) CMSG_DATA(cmsg);
if (cred->pid != 0)
return -1;
p = (struct nlmsghdr *) nl->buffer;
assert(nl->callback);
for (; bytes > 0; p = NLMSG_NEXT(p, bytes)) {
if (!NLMSG_OK(p, (size_t) bytes)) {
avahi_log_warn(__FILE__": packet truncated");
return -1;
}
nl->callback(nl, p, nl->userdata);
}
return 0;
}
static void add_static_host_to_server(StaticHost *h)
{
AvahiAddress a;
int err;
if (!h->group)
h->group = avahi_s_entry_group_new (avahi_server, entry_group_callback, h);
if (!avahi_address_parse (h->ip, AVAHI_PROTO_UNSPEC, &a)) {
avahi_log_error("Static host name %s: avahi_address_parse failed", h->host);
return;
}
if ((err = avahi_server_add_address(avahi_server, h->group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, 0, h->host, &a))) {
avahi_log_error ("Static host name %s: avahi_server_add_address failure: %s", h->host, avahi_strerror(err));
return;
}
avahi_s_entry_group_commit (h->group);
}
AvahiWideAreaLookupEngine *avahi_wide_area_engine_new(AvahiServer *s) {
AvahiWideAreaLookupEngine *e;
assert(s);
e = avahi_new(AvahiWideAreaLookupEngine, 1);
e->server = s;
e->cleanup_dead = 0;
/* Create sockets */
e->fd_ipv4 = s->config.use_ipv4 ? avahi_open_unicast_socket_ipv4() : -1;
e->fd_ipv6 = s->config.use_ipv6 ? avahi_open_unicast_socket_ipv6() : -1;
if (e->fd_ipv4 < 0 && e->fd_ipv6 < 0) {
avahi_log_error(__FILE__": Failed to create wide area sockets: %s", strerror(errno));
if (e->fd_ipv6 >= 0)
close(e->fd_ipv6);
if (e->fd_ipv4 >= 0)
close(e->fd_ipv4);
avahi_free(e);
return NULL;
}
/* Create watches */
e->watch_ipv4 = e->watch_ipv6 = NULL;
if (e->fd_ipv4 >= 0)
e->watch_ipv4 = s->poll_api->watch_new(e->server->poll_api, e->fd_ipv4, AVAHI_WATCH_IN, socket_event, e);
if (e->fd_ipv6 >= 0)
e->watch_ipv6 = s->poll_api->watch_new(e->server->poll_api, e->fd_ipv6, AVAHI_WATCH_IN, socket_event, e);
e->n_dns_servers = e->current_dns_server = 0;
e->next_id = (uint16_t) rand();
/* Initialize cache */
AVAHI_LLIST_HEAD_INIT(AvahiWideAreaCacheEntry, e->cache);
e->cache_by_key = avahi_hashmap_new((AvahiHashFunc) avahi_key_hash, (AvahiEqualFunc) avahi_key_equal, (AvahiFreeFunc) avahi_key_unref, NULL);
e->cache_n_entries = 0;
/* Initialize lookup list */
e->lookups_by_id = avahi_hashmap_new((AvahiHashFunc) avahi_int_hash, (AvahiEqualFunc) avahi_int_equal, NULL, NULL);
e->lookups_by_key = avahi_hashmap_new((AvahiHashFunc) avahi_key_hash, (AvahiEqualFunc) avahi_key_equal, (AvahiFreeFunc) avahi_key_unref, NULL);
AVAHI_LLIST_HEAD_INIT(AvahiWideAreaLookup, e->lookups);
return e;
}
static void server_work(AVAHI_GCC_UNUSED AvahiWatch *watch, int fd, AvahiWatchEvent events, void *userdata) {
Server *s = userdata;
assert(s);
if (events & AVAHI_WATCH_IN) {
int cfd;
if ((cfd = accept(fd, NULL, NULL)) < 0)
avahi_log_error("accept(): %s", strerror(errno));
else
client_new(s, cfd);
}
}
static void load_file(char *n) {
StaticServiceGroup *g;
assert(n);
for (g = groups; g; g = g->groups_next)
if (strcmp(g->filename, n) == 0)
return;
avahi_log_info("Loading service file %s.", n);
g = static_service_group_new(n);
if (static_service_group_load(g) < 0) {
avahi_log_error("Failed to load service group file %s, ignoring.", g->filename);
static_service_group_free(g);
}
}
int avahi_netlink_send(AvahiNetlink *nl, struct nlmsghdr *m, unsigned *ret_seq) {
assert(nl);
assert(m);
m->nlmsg_seq = nl->seq++;
m->nlmsg_flags |= NLM_F_ACK;
if (send(nl->fd, m, m->nlmsg_len, 0) < 0) {
avahi_log_error(__FILE__": send(): %s", strerror(errno));
return -1;
}
if (ret_seq)
*ret_seq = m->nlmsg_seq;
return 0;
}
int avahi_caps_drop_all(void) {
cap_t caps;
int ret = 0;
/* Drop all capabilities and turn ourselves into a normal user process */
caps = cap_init();
assert(caps);
cap_clear(caps);
if (cap_set_proc(caps) < 0) {
avahi_log_error("cap_set_proc() failed: %s", strerror(errno));
ret = -1;
}
cap_free(caps);
return ret;
}
AvahiProbeScheduler *avahi_probe_scheduler_new(AvahiInterface *i) {
AvahiProbeScheduler *s;
assert(i);
if (!(s = avahi_new(AvahiProbeScheduler, 1))) {
avahi_log_error(__FILE__": Out of memory");
return NULL;
}
s->interface = i;
s->time_event_queue = i->monitor->server->time_event_queue;
AVAHI_LLIST_HEAD_INIT(AvahiProbeJob, s->jobs);
AVAHI_LLIST_HEAD_INIT(AvahiProbeJob, s->history);
return s;
}
AvahiQueryScheduler *avahi_query_scheduler_new(AvahiInterface *i) {
AvahiQueryScheduler *s;
assert(i);
if (!(s = avahi_new(AvahiQueryScheduler, 1))) {
avahi_log_error(__FILE__": Out of memory");
return NULL; /* OOM */
}
s->interface = i;
s->time_event_queue = i->monitor->server->time_event_queue;
s->next_id = 0;
AVAHI_LLIST_HEAD_INIT(AvahiQueryJob, s->jobs);
AVAHI_LLIST_HEAD_INIT(AvahiQueryJob, s->history);
AVAHI_LLIST_HEAD_INIT(AvahiKnownAnswer, s->known_answers);
return s;
}
static void signal_callback(AvahiWatch *watch, AVAHI_GCC_UNUSED int fd, AVAHI_GCC_UNUSED AvahiWatchEvent event, AVAHI_GCC_UNUSED void *userdata) {
int sig;
const AvahiPoll *poll_api;
assert(watch);
assert(simple_poll_api);
poll_api = avahi_simple_poll_get(simple_poll_api);
if ((sig = daemon_signal_next()) <= 0) {
avahi_log_error("daemon_signal_next() failed");
poll_api->watch_free(watch);
return;
}
switch (sig) {
case SIGINT:
case SIGQUIT:
case SIGTERM:
avahi_log_info(
"Got %s, quitting.",
sig == SIGINT ? "SIGINT" :
(sig == SIGQUIT ? "SIGQUIT" : "SIGTERM"));
avahi_simple_poll_quit(simple_poll_api);
break;
case SIGHUP:
avahi_log_info("Got SIGHUP, reloading.");
reload_config();
break;
case SIGUSR1:
avahi_log_info("Got SIGUSR1, dumping record data.");
avahi_server_dump(avahi_server, dump, NULL);
break;
default:
avahi_log_warn("Got spurious signal, ignoring.");
break;
}
}
static void kqueue_callback(AvahiWatch *watch, int fd, AVAHI_GCC_UNUSED AvahiWatchEvent event, AVAHI_GCC_UNUSED void *userdata) {
struct kevent ev;
struct timespec nullts = { 0, 0 };
int res;
assert(fd == kq);
assert(watch);
res = kevent(kq, NULL, 0, &ev, 1, &nullts);
if (res > 0) {
/* Sleep for a half-second to avoid potential races
* during install/uninstall. */
usleep(500000);
avahi_log_info("Files changed, reloading.");
reload_config();
} else {
avahi_log_error("Failed to read kqueue event: %s", avahi_strerror(errno));
}
}
static void inotify_callback(AvahiWatch *watch, int fd, AVAHI_GCC_UNUSED AvahiWatchEvent event, AVAHI_GCC_UNUSED void *userdata) {
char* buffer;
int n = 0;
assert(fd == inotify_fd);
assert(watch);
ioctl(inotify_fd, FIONREAD, &n);
if (n <= 0)
n = 128;
buffer = avahi_malloc(n);
if (read(inotify_fd, buffer, n) < 0 ) {
avahi_free(buffer);
avahi_log_error("Failed to read inotify event: %s", avahi_strerror(errno));
return;
}
avahi_free(buffer);
avahi_log_info("Files changed, reloading.");
reload_config();
}
static void* known_answer_walk_callback(AvahiCache *c, AvahiKey *pattern, AvahiCacheEntry *e, void* userdata) {
AvahiQueryScheduler *s = userdata;
AvahiKnownAnswer *ka;
assert(c);
assert(pattern);
assert(e);
assert(s);
if (avahi_cache_entry_half_ttl(c, e))
return NULL;
if (!(ka = avahi_new0(AvahiKnownAnswer, 1))) {
avahi_log_error(__FILE__": Out of memory");
return NULL;
}
ka->scheduler = s;
ka->record = avahi_record_ref(e->record);
AVAHI_LLIST_PREPEND(AvahiKnownAnswer, known_answer, s->known_answers, ka);
return NULL;
}
static AvahiProbeJob* job_new(AvahiProbeScheduler *s, AvahiRecord *record, int done) {
AvahiProbeJob *pj;
assert(s);
assert(record);
if (!(pj = avahi_new(AvahiProbeJob, 1))) {
avahi_log_error(__FILE__": Out of memory");
return NULL; /* OOM */
}
pj->scheduler = s;
pj->record = avahi_record_ref(record);
pj->time_event = NULL;
pj->chosen = 0;
if ((pj->done = done))
AVAHI_LLIST_PREPEND(AvahiProbeJob, jobs, s->history, pj);
else
AVAHI_LLIST_PREPEND(AvahiProbeJob, jobs, s->jobs, pj);
return pj;
}
static AvahiQueryJob* job_new(AvahiQueryScheduler *s, AvahiKey *key, int done) {
AvahiQueryJob *qj;
assert(s);
assert(key);
if (!(qj = avahi_new(AvahiQueryJob, 1))) {
avahi_log_error(__FILE__": Out of memory");
return NULL;
}
qj->scheduler = s;
qj->key = avahi_key_ref(key);
qj->time_event = NULL;
qj->n_posted = 1;
qj->id = s->next_id++;
if ((qj->done = done))
AVAHI_LLIST_PREPEND(AvahiQueryJob, jobs, s->history, qj);
else
AVAHI_LLIST_PREPEND(AvahiQueryJob, jobs, s->jobs, qj);
return qj;
}
static int load_config_file(DaemonConfig *c) {
int r = -1;
AvahiIniFile *f;
AvahiIniFileGroup *g;
assert(c);
if (!(f = avahi_ini_file_load(c->config_file ? c->config_file : AVAHI_CONFIG_FILE)))
goto finish;
for (g = f->groups; g; g = g->groups_next) {
if (strcasecmp(g->name, "server") == 0) {
AvahiIniFilePair *p;
for (p = g->pairs; p; p = p->pairs_next) {
if (strcasecmp(p->key, "host-name") == 0) {
avahi_free(c->server_config.host_name);
c->server_config.host_name = avahi_strdup(p->value);
} else if (strcasecmp(p->key, "domain-name") == 0) {
avahi_free(c->server_config.domain_name);
c->server_config.domain_name = avahi_strdup(p->value);
} else if (strcasecmp(p->key, "browse-domains") == 0) {
char **e, **t;
e = avahi_split_csv(p->value);
for (t = e; *t; t++) {
char cleaned[AVAHI_DOMAIN_NAME_MAX];
if (!avahi_normalize_name(*t, cleaned, sizeof(cleaned))) {
avahi_log_error("Invalid domain name \"%s\" for key \"%s\" in group \"%s\"\n", *t, p->key, g->name);
avahi_strfreev(e);
goto finish;
}
c->server_config.browse_domains = avahi_string_list_add(c->server_config.browse_domains, cleaned);
}
avahi_strfreev(e);
c->server_config.browse_domains = filter_duplicate_domains(c->server_config.browse_domains);
} else if (strcasecmp(p->key, "use-ipv4") == 0)
c->server_config.use_ipv4 = is_yes(p->value);
else if (strcasecmp(p->key, "use-ipv6") == 0)
c->server_config.use_ipv6 = is_yes(p->value);
else if (strcasecmp(p->key, "check-response-ttl") == 0)
c->server_config.check_response_ttl = is_yes(p->value);
else if (strcasecmp(p->key, "allow-point-to-point") == 0)
c->server_config.allow_point_to_point = is_yes(p->value);
else if (strcasecmp(p->key, "use-iff-running") == 0)
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) {
if (*(p->value) == 'w' || *(p->value) == 'W') {
c->fail_on_missing_dbus = 0;
c->enable_dbus = 1;
} else if (*(p->value) == 'y' || *(p->value) == 'Y') {
c->fail_on_missing_dbus = 1;
c->enable_dbus = 1;
} else {
c->enable_dbus = 0;
}
}
#endif
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;
}
}
} else if (strcasecmp(g->name, "publish") == 0) {
AvahiIniFilePair *p;
for (p = g->pairs; p; p = p->pairs_next) {
if (strcasecmp(p->key, "publish-addresses") == 0)
c->server_config.publish_addresses = is_yes(p->value);
else if (strcasecmp(p->key, "publish-hinfo") == 0)
c->server_config.publish_hinfo = is_yes(p->value);
else if (strcasecmp(p->key, "publish-workstation") == 0)
c->server_config.publish_workstation = is_yes(p->value);
else if (strcasecmp(p->key, "publish-domain") == 0)
c->server_config.publish_domain = is_yes(p->value);
else if (strcasecmp(p->key, "publish-resolv-conf-dns-servers") == 0)
c->publish_resolv_conf = is_yes(p->value);
else if (strcasecmp(p->key, "disable-publishing") == 0)
c->server_config.disable_publishing = is_yes(p->value);
else if (strcasecmp(p->key, "disable-user-service-publishing") == 0)
c->disable_user_service_publishing = is_yes(p->value);
else if (strcasecmp(p->key, "add-service-cookie") == 0)
c->server_config.add_service_cookie = is_yes(p->value);
else if (strcasecmp(p->key, "publish-dns-servers") == 0) {
avahi_strfreev(c->publish_dns_servers);
c->publish_dns_servers = avahi_split_csv(p->value);
} else if (strcasecmp(p->key, "publish-a-on-ipv6") == 0)
c->server_config.publish_a_on_ipv6 = is_yes(p->value);
else if (strcasecmp(p->key, "publish-aaaa-on-ipv4") == 0)
c->server_config.publish_aaaa_on_ipv4 = is_yes(p->value);
else {
avahi_log_error("Invalid configuration key \"%s\" in group \"%s\"\n", p->key, g->name);
goto finish;
}
}
} else if (strcasecmp(g->name, "wide-area") == 0) {
AvahiIniFilePair *p;
for (p = g->pairs; p; p = p->pairs_next) {
if (strcasecmp(p->key, "enable-wide-area") == 0)
c->server_config.enable_wide_area = is_yes(p->value);
else {
avahi_log_error("Invalid configuration key \"%s\" in group \"%s\"\n", p->key, g->name);
goto finish;
}
}
} else if (strcasecmp(g->name, "reflector") == 0) {
AvahiIniFilePair *p;
for (p = g->pairs; p; p = p->pairs_next) {
if (strcasecmp(p->key, "enable-reflector") == 0)
c->server_config.enable_reflector = is_yes(p->value);
else if (strcasecmp(p->key, "reflect-ipv") == 0)
c->server_config.reflect_ipv = is_yes(p->value);
else {
avahi_log_error("Invalid configuration key \"%s\" in group \"%s\"\n", p->key, g->name);
goto finish;
}
}
} else if (strcasecmp(g->name, "rlimits") == 0) {
AvahiIniFilePair *p;
for (p = g->pairs; p; p = p->pairs_next) {
if (strcasecmp(p->key, "rlimit-as") == 0) {
c->rlimit_as_set = 1;
c->rlimit_as = atoi(p->value);
} else if (strcasecmp(p->key, "rlimit-core") == 0) {
c->rlimit_core_set = 1;
c->rlimit_core = atoi(p->value);
} else if (strcasecmp(p->key, "rlimit-data") == 0) {
c->rlimit_data_set = 1;
c->rlimit_data = atoi(p->value);
} else if (strcasecmp(p->key, "rlimit-fsize") == 0) {
c->rlimit_fsize_set = 1;
c->rlimit_fsize = atoi(p->value);
} else if (strcasecmp(p->key, "rlimit-nofile") == 0) {
c->rlimit_nofile_set = 1;
c->rlimit_nofile = atoi(p->value);
} else if (strcasecmp(p->key, "rlimit-stack") == 0) {
c->rlimit_stack_set = 1;
c->rlimit_stack = atoi(p->value);
} else if (strcasecmp(p->key, "rlimit-nproc") == 0) {
#ifdef RLIMIT_NPROC
c->rlimit_nproc_set = 1;
c->rlimit_nproc = atoi(p->value);
#else
avahi_log_error("Ignoring configuration key \"%s\" in group \"%s\"\n", p->key, g->name);
#endif
} else {
avahi_log_error("Invalid configuration key \"%s\" in group \"%s\"\n", p->key, g->name);
goto finish;
}
}
} else {
avahi_log_error("Invalid configuration file group \"%s\".\n", g->name);
goto finish;
}
}
r = 0;
finish:
if (f)
avahi_ini_file_free(f);
return r;
}
