resolved: set the DNSSEC OK (DO) flag

[thirdparty/systemd.git] / src / resolve / resolved-dns-packet.h

diff --git a/src/resolve/resolved-dns-packet.h b/src/resolve/resolved-dns-packet.h
index 5628e579ad17e0e9f6c0e353ca08e1704255ffb6..feded09db31d495c9afe26619f84d02a98f23da5 100644 (file)
--- a/src/resolve/resolved-dns-packet.h
+++ b/src/resolve/resolved-dns-packet.h
@@ -21,21 +21,21 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  ***/
 
-#include <netinet/udp.h>
 #include <netinet/ip.h>
+#include <netinet/udp.h>
 
-#include "macro.h"
-#include "sparse-endian.h"
 #include "hashmap.h"
 #include "in-addr-util.h"
+#include "macro.h"
+#include "sparse-endian.h"
 
 typedef struct DnsPacketHeader DnsPacketHeader;
 typedef struct DnsPacket DnsPacket;
 
-#include "resolved-dns-rr.h"
-#include "resolved-dns-question.h"
-#include "resolved-dns-answer.h"
 #include "resolved-def.h"
+#include "resolved-dns-answer.h"
+#include "resolved-dns-question.h"
+#include "resolved-dns-rr.h"
 
 typedef enum DnsProtocol {
         DNS_PROTOCOL_DNS,
@@ -78,7 +78,7 @@ struct DnsPacket {
         DnsQuestion *question;
         DnsAnswer *answer;
 
-        /* Packet reception meta data */
+        /* Packet reception metadata */
         int ifindex;
         int family, ipproto;
         union in_addr_union sender, destination;
@@ -155,11 +155,14 @@ int dns_packet_append_uint8(DnsPacket *p, uint8_t v, size_t *start);
 int dns_packet_append_uint16(DnsPacket *p, uint16_t v, size_t *start);
 int dns_packet_append_uint32(DnsPacket *p, uint32_t v, size_t *start);
 int dns_packet_append_string(DnsPacket *p, const char *s, size_t *start);
+int dns_packet_append_raw_string(DnsPacket *p, const void *s, size_t size, size_t *start);
 int dns_packet_append_label(DnsPacket *p, const char *s, size_t l, size_t *start);
-int dns_packet_append_name(DnsPacket *p, const char *name,
-                           bool allow_compression, size_t *start);
+int dns_packet_append_name(DnsPacket *p, const char *name, bool allow_compression, size_t *start);
 int dns_packet_append_key(DnsPacket *p, const DnsResourceKey *key, size_t *start);
 int dns_packet_append_rr(DnsPacket *p, const DnsResourceRecord *rr, size_t *start);
+int dns_packet_append_opt_rr(DnsPacket *p, uint16_t max_udp_size, bool edns0_do, size_t *start);
+
+void dns_packet_truncate(DnsPacket *p, size_t sz);
 
 int dns_packet_read(DnsPacket *p, size_t sz, const void **ret, size_t *start);
 int dns_packet_read_blob(DnsPacket *p, void *d, size_t sz, size_t *start);
@@ -167,8 +170,8 @@ int dns_packet_read_uint8(DnsPacket *p, uint8_t *ret, size_t *start);
 int dns_packet_read_uint16(DnsPacket *p, uint16_t *ret, size_t *start);
 int dns_packet_read_uint32(DnsPacket *p, uint32_t *ret, size_t *start);
 int dns_packet_read_string(DnsPacket *p, char **ret, size_t *start);
-int dns_packet_read_name(DnsPacket *p, char **ret,
-                         bool allow_compression, size_t *start);
+int dns_packet_read_raw_string(DnsPacket *p, const void **ret, size_t *size, size_t *start);
+int dns_packet_read_name(DnsPacket *p, char **ret, bool allow_compression, size_t *start);
 int dns_packet_read_key(DnsPacket *p, DnsResourceKey **ret, size_t *start);
 int dns_packet_read_rr(DnsPacket *p, DnsResourceRecord **ret, size_t *start);
 
@@ -177,6 +180,14 @@ void dns_packet_rewind(DnsPacket *p, size_t idx);
 int dns_packet_skip_question(DnsPacket *p);
 int dns_packet_extract(DnsPacket *p);
 
+static inline bool DNS_PACKET_SHALL_CACHE(DnsPacket *p) {
+        /* Never cache data originating from localhost, under the
+         * assumption, that it's coming from a locally DNS forwarder
+         * or server, that is caching on its own. */
+
+        return in_addr_is_localhost(p->family, &p->sender) == 0;
+}
+
 enum {
         DNS_RCODE_SUCCESS = 0,
         DNS_RCODE_FORMERR = 1,