diff options
Diffstat (limited to 'avahi-core/browse.c')
-rw-r--r-- | avahi-core/browse.c | 98 |
1 files changed, 49 insertions, 49 deletions
diff --git a/avahi-core/browse.c b/avahi-core/browse.c index 16d8954..f56203f 100644 --- a/avahi-core/browse.c +++ b/avahi-core/browse.c @@ -2,17 +2,17 @@ /*** 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 @@ -42,20 +42,20 @@ struct AvahiSRBLookup { AvahiSRecordBrowser *record_browser; - + unsigned ref; AvahiIfIndex interface; AvahiProtocol protocol; AvahiLookupFlags flags; - + AvahiKey *key; AvahiWideAreaLookup *wide_area; AvahiMulticastLookup *multicast; AvahiRList *cname_lookups; - + AVAHI_LLIST_FIELDS(AvahiSRBLookup, lookups); }; @@ -89,7 +89,7 @@ static AvahiSRBLookup* lookup_new( AvahiKey *key) { AvahiSRBLookup *l; - + assert(b); assert(AVAHI_IF_VALID(interface)); assert(AVAHI_PROTO_VALID(protocol)); @@ -97,10 +97,10 @@ static AvahiSRBLookup* lookup_new( if (b->n_lookups >= AVAHI_LOOKUPS_PER_BROWSER_MAX) /* We don't like cyclic CNAMEs */ return NULL; - + if (!(l = avahi_new(AvahiSRBLookup, 1))) return NULL; - + l->ref = 1; l->record_browser = b; l->interface = interface; @@ -112,11 +112,11 @@ static AvahiSRBLookup* lookup_new( l->flags = flags; transport_flags_from_domain(b->server, &l->flags, key->name); - + AVAHI_LLIST_PREPEND(AvahiSRBLookup, lookups, b->lookups, l); b->n_lookups ++; - + return l; } @@ -134,7 +134,7 @@ static void lookup_unref(AvahiSRBLookup *l) { avahi_wide_area_lookup_free(l->wide_area); l->wide_area = NULL; } - + if (l->multicast) { avahi_multicast_lookup_free(l->multicast); l->multicast = NULL; @@ -144,7 +144,7 @@ static void lookup_unref(AvahiSRBLookup *l) { lookup_unref(l->cname_lookups->data); l->cname_lookups = avahi_rlist_remove_by_link(l->cname_lookups, l->cname_lookups); } - + avahi_key_unref(l->key); avahi_free(l); } @@ -163,9 +163,9 @@ static AvahiSRBLookup *lookup_find( AvahiProtocol protocol, AvahiLookupFlags flags, AvahiKey *key) { - + AvahiSRBLookup *l; - + assert(b); for (l = b->lookups; l; l = l->lookups_next) { @@ -201,7 +201,7 @@ static void lookup_wide_area_callback( AvahiLookupResultFlags flags, AvahiRecord *r, void *userdata) { - + AvahiSRBLookup *l = userdata; AvahiSRecordBrowser *b; @@ -215,11 +215,11 @@ static void lookup_wide_area_callback( return; lookup_ref(l); - + switch (event) { case AVAHI_BROWSER_NEW: assert(r); - + if (r->key->clazz == AVAHI_DNS_CLASS_IN && r->key->type == AVAHI_DNS_TYPE_CNAME) /* It's a CNAME record, so let's follow it. We only follow it on wide area DNS! */ @@ -259,7 +259,7 @@ static void lookup_multicast_callback( AvahiSRBLookup *l = userdata; AvahiSRecordBrowser *b; - + assert(e); assert(l); @@ -269,11 +269,11 @@ static void lookup_multicast_callback( return; lookup_ref(l); - + switch (event) { case AVAHI_BROWSER_NEW: assert(r); - + if (r->key->clazz == AVAHI_DNS_CLASS_IN && r->key->type == AVAHI_DNS_TYPE_CNAME) /* It's a CNAME record, so let's follow it. We allow browsing on both multicast and wide area. */ @@ -283,7 +283,7 @@ static void lookup_multicast_callback( if (avahi_server_is_record_local(b->server, interface, protocol, r)) flags |= AVAHI_LOOKUP_RESULT_LOCAL; - + b->callback(b, interface, protocol, event, r, flags, b->userdata); } break; @@ -323,12 +323,12 @@ static int lookup_start(AvahiSRBLookup *l) { assert(!(l->flags & AVAHI_LOOKUP_USE_WIDE_AREA) != !(l->flags & AVAHI_LOOKUP_USE_MULTICAST)); assert(!l->wide_area && !l->multicast); - + if (l->flags & AVAHI_LOOKUP_USE_WIDE_AREA) { if (!(l->wide_area = avahi_wide_area_lookup_new(l->record_browser->server->wide_area_lookup_engine, l->key, lookup_wide_area_callback, l))) return -1; - + } else { assert(l->flags & AVAHI_LOOKUP_USE_MULTICAST); @@ -341,15 +341,15 @@ static int lookup_start(AvahiSRBLookup *l) { static int lookup_scan_cache(AvahiSRBLookup *l) { int n = 0; - + assert(l); assert(!(l->flags & AVAHI_LOOKUP_USE_WIDE_AREA) != !(l->flags & AVAHI_LOOKUP_USE_MULTICAST)); - + if (l->flags & AVAHI_LOOKUP_USE_WIDE_AREA) { n = (int) avahi_wide_area_scan_cache(l->record_browser->server->wide_area_lookup_engine, l->key, lookup_wide_area_callback, l); - + } else { assert(l->flags & AVAHI_LOOKUP_USE_MULTICAST); n = (int) avahi_multicast_lookup_engine_scan_cache(l->record_browser->server->multicast_lookup_engine, l->interface, l->protocol, l->key, lookup_multicast_callback, l); @@ -360,7 +360,7 @@ static int lookup_scan_cache(AvahiSRBLookup *l) { static AvahiSRBLookup* lookup_add(AvahiSRecordBrowser *b, AvahiIfIndex interface, AvahiProtocol protocol, AvahiLookupFlags flags, AvahiKey *key) { AvahiSRBLookup *l; - + assert(b); assert(!b->dead); @@ -379,9 +379,9 @@ static int lookup_go(AvahiSRBLookup *l) { if (l->record_browser->dead) return 0; - + lookup_ref(l); - + /* Browse the cache for the root request */ n = lookup_scan_cache(l); @@ -390,7 +390,7 @@ static int lookup_go(AvahiSRBLookup *l) { if ((l->flags & AVAHI_LOOKUP_USE_MULTICAST) || n == 0) /* We do no start a query if the cache contained entries and we're on wide area */ - + if (lookup_start(l) < 0) n = -1; } @@ -403,7 +403,7 @@ static int lookup_go(AvahiSRBLookup *l) { static void lookup_handle_cname(AvahiSRBLookup *l, AvahiIfIndex interface, AvahiProtocol protocol, AvahiLookupFlags flags, AvahiRecord *r) { AvahiKey *k; AvahiSRBLookup *n; - + assert(l); assert(r); @@ -411,7 +411,7 @@ static void lookup_handle_cname(AvahiSRBLookup *l, AvahiIfIndex interface, Avahi assert(r->key->type == AVAHI_DNS_TYPE_CNAME); k = avahi_key_new(r->data.ptr.name, l->record_browser->key->clazz, l->record_browser->key->type); - n = lookup_add(l->record_browser, interface, protocol, flags, k); + n = lookup_add(l->record_browser, interface, protocol, flags, k); avahi_key_unref(k); if (!n) { @@ -446,7 +446,7 @@ static void lookup_drop_cname(AvahiSRBLookup *l, AvahiIfIndex interface, AvahiPr avahi_key_equal(n->key, k)) break; } - + avahi_key_unref(k); if (rl) { @@ -487,11 +487,11 @@ static void defer_callback(AVAHI_GCC_UNUSED AvahiTimeEvent *e, void *userdata) { b, b->interface, b->protocol, AVAHI_BROWSER_FAILURE, NULL, b->flags & AVAHI_LOOKUP_USE_WIDE_AREA ? AVAHI_LOOKUP_RESULT_WIDE_AREA : AVAHI_LOOKUP_RESULT_MULTICAST, b->userdata); - + browser_cancel(b); return; } - + /* Tell the client that we're done with the cache */ b->callback( b, b->interface, b->protocol, AVAHI_BROWSER_CACHE_EXHAUSTED, NULL, @@ -503,7 +503,7 @@ static void defer_callback(AVAHI_GCC_UNUSED AvahiTimeEvent *e, void *userdata) { /* If we do wide area lookups and the the cache contained * entries, we assume that it is complete, and tell the user * so by firing ALL_FOR_NOW. */ - + b->callback(b, b->interface, b->protocol, AVAHI_BROWSER_ALL_FOR_NOW, NULL, AVAHI_LOOKUP_RESULT_WIDE_AREA, b->userdata); } } @@ -529,7 +529,7 @@ AvahiSRecordBrowser *avahi_s_record_browser_new( AvahiLookupFlags flags, AvahiSRecordBrowserCallback callback, void* userdata) { - + AvahiSRecordBrowser *b; assert(server); @@ -541,13 +541,13 @@ AvahiSRecordBrowser *avahi_s_record_browser_new( AVAHI_CHECK_VALIDITY_RETURN_NULL(server, !avahi_key_is_pattern(key), AVAHI_ERR_IS_PATTERN); AVAHI_CHECK_VALIDITY_RETURN_NULL(server, avahi_key_is_valid(key), AVAHI_ERR_INVALID_KEY); AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_FLAGS_VALID(flags, AVAHI_LOOKUP_USE_WIDE_AREA|AVAHI_LOOKUP_USE_MULTICAST), AVAHI_ERR_INVALID_FLAGS); - AVAHI_CHECK_VALIDITY_RETURN_NULL(server, !(flags & AVAHI_LOOKUP_USE_WIDE_AREA) || !(flags & AVAHI_LOOKUP_USE_MULTICAST), AVAHI_ERR_INVALID_FLAGS); - + AVAHI_CHECK_VALIDITY_RETURN_NULL(server, !(flags & AVAHI_LOOKUP_USE_WIDE_AREA) || !(flags & AVAHI_LOOKUP_USE_MULTICAST), AVAHI_ERR_INVALID_FLAGS); + if (!(b = avahi_new(AvahiSRecordBrowser, 1))) { avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY); return NULL; } - + b->dead = 0; b->server = server; b->interface = interface; @@ -559,13 +559,13 @@ AvahiSRecordBrowser *avahi_s_record_browser_new( b->n_lookups = 0; AVAHI_LLIST_HEAD_INIT(AvahiSRBLookup, b->lookups); b->root_lookup = NULL; - + AVAHI_LLIST_PREPEND(AvahiSRecordBrowser, browser, server->record_browsers, b); /* The currently cached entries are scanned a bit later, and than we will start querying, too */ b->defer_time_event = avahi_time_event_new(server->time_event_queue, NULL, defer_callback, b); assert(b->defer_time_event); - + return b; } @@ -583,30 +583,30 @@ void avahi_s_record_browser_destroy(AvahiSRecordBrowser *b) { assert(b); browser_cancel(b); - + AVAHI_LLIST_REMOVE(AvahiSRecordBrowser, browser, b->server->record_browsers, b); avahi_key_unref(b->key); - + avahi_free(b); } void avahi_browser_cleanup(AvahiServer *server) { AvahiSRecordBrowser *b; AvahiSRecordBrowser *n; - + assert(server); while (server->need_browser_cleanup) { server->need_browser_cleanup = 0; - + for (b = server->record_browsers; b; b = n) { n = b->browser_next; - + if (b->dead) avahi_s_record_browser_destroy(b); } - } + } if (server->wide_area_lookup_engine) avahi_wide_area_cleanup(server->wide_area_lookup_engine); |