Avoid using AC_CHECK_FILE when cross-compiling

[catta] / avahi-core / dns.c

diff --git a/avahi-core/dns.c b/avahi-core/dns.c
index 0206ec767271227fb37fb0ad85daa937b3e69d55..41ccc8f3503c689e93ae6e612d22100f3656b3b5 100644 (file)
--- a/avahi-core/dns.c
+++ b/avahi-core/dns.c
@@ -153,6 +153,19 @@ void avahi_dns_packet_inc_field(AvahiDnsPacket *p, unsigned idx) {
     avahi_dns_packet_set_field(p, idx, avahi_dns_packet_get_field(p, idx) + 1);
 }   
 
+
+static void name_table_cleanup(void *key, void *value, void *user_data) {
+    AvahiDnsPacket *p = user_data;
+    
+    if ((uint8_t*) value >= AVAHI_DNS_PACKET_DATA(p) + p->size)
+        avahi_hashmap_remove(p->name_table, key);
+}
+
+void avahi_dns_packet_cleanup_name_table(AvahiDnsPacket *p) {
+    if (p->name_table)
+        avahi_hashmap_foreach(p->name_table, name_table_cleanup, p);
+}
+
 uint8_t* avahi_dns_packet_append_name(AvahiDnsPacket *p, const char *name) {
     uint8_t *d, *saved_ptr = NULL;
     size_t saved_size;
@@ -216,6 +229,8 @@ uint8_t* avahi_dns_packet_append_name(AvahiDnsPacket *p, const char *name) {
 
 fail:
     p->size = saved_size;
+    avahi_dns_packet_cleanup_name_table(p);
+
     return NULL;
 }
 
@@ -685,6 +700,8 @@ uint8_t* avahi_dns_packet_append_key(AvahiDnsPacket *p, AvahiKey *k, int unicast
         !avahi_dns_packet_append_uint16(p, k->type) ||
         !avahi_dns_packet_append_uint16(p, k->clazz | (unicast_response ? AVAHI_DNS_UNICAST_RESPONSE : 0))) {
         p->size = size;
+        avahi_dns_packet_cleanup_name_table(p);
+
         return NULL;
     }
 
@@ -799,6 +816,8 @@ uint8_t* avahi_dns_packet_append_record(AvahiDnsPacket *p, AvahiRecord *r, int c
 
 fail:
     p->size = size;
+    avahi_dns_packet_cleanup_name_table(p);
+
     return NULL;
 }