resolved: DNSKEY records

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

diff --git a/src/resolve/resolved-dns-packet.h b/src/resolve/resolved-dns-packet.h
index 4fd2d408ce84c41e968866e12273906675262140..4e3001911e7c74a64e27ff9c4946c699b286a5fc 100644 (file)
--- a/src/resolve/resolved-dns-packet.h
+++ b/src/resolve/resolved-dns-packet.h
@@ -21,15 +21,19 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  ***/
 
-typedef struct DnsPacketHeader DnsPacketHeader;
-typedef struct DnsPacket DnsPacket;
-
 #include <inttypes.h>
 
 #include "macro.h"
 #include "sparse-endian.h"
 #include "hashmap.h"
+#include "in-addr-util.h"
+
+typedef struct DnsPacketHeader DnsPacketHeader;
+typedef struct DnsPacket DnsPacket;
+
 #include "resolved-dns-rr.h"
+#include "resolved-dns-question.h"
+#include "resolved-dns-answer.h"
 
 typedef enum DnsProtocol {
         DNS_PROTOCOL_DNS,
@@ -64,14 +68,18 @@ struct DnsPacket {
         int n_ref;
         DnsProtocol protocol;
         size_t size, allocated, rindex;
-        void *data;
+        void *_data; /* don't access directly, use DNS_PACKET_DATA()! */
         Hashmap *names; /* For name compression */
-        DnsResourceRecord **rrs;
+
+        /* Parsed data */
+        DnsQuestion *question;
+        DnsAnswer *answer;
 
         /* Packet reception meta data */
         int ifindex;
-        int family;
+        int family, ipproto;
         union in_addr_union sender, destination;
+        uint16_t sender_port, destination_port;
         uint32_t ttl;
 };
 
@@ -79,8 +87,8 @@ static inline uint8_t* DNS_PACKET_DATA(DnsPacket *p) {
         if (_unlikely_(!p))
                 return NULL;
 
-        if (p->data)
-                return p->data;
+        if (p->_data)
+                return p->_data;
 
         return ((uint8_t*) p) + ALIGN(sizeof(DnsPacket));
 }
@@ -91,6 +99,8 @@ static inline uint8_t* DNS_PACKET_DATA(DnsPacket *p) {
 #define DNS_PACKET_OPCODE(p) ((be16toh(DNS_PACKET_HEADER(p)->flags) >> 11) & 15)
 #define DNS_PACKET_RCODE(p) (be16toh(DNS_PACKET_HEADER(p)->flags) & 15)
 #define DNS_PACKET_TC(p) ((be16toh(DNS_PACKET_HEADER(p)->flags) >> 9) & 1)
+#define DNS_PACKET_C(p) ((be16toh(DNS_PACKET_HEADER(p)->flags) >> 10) & 1)
+#define DNS_PACKET_T(p) ((be16toh(DNS_PACKET_HEADER(p)->flags) >> 8) & 1)
 #define DNS_PACKET_QDCOUNT(p) be16toh(DNS_PACKET_HEADER(p)->qdcount)
 #define DNS_PACKET_ANCOUNT(p) be16toh(DNS_PACKET_HEADER(p)->ancount)
 #define DNS_PACKET_NSCOUNT(p) be16toh(DNS_PACKET_HEADER(p)->nscount)
@@ -124,27 +134,32 @@ DEFINE_TRIVIAL_CLEANUP_FUNC(DnsPacket*, dns_packet_unref);
 
 int dns_packet_validate(DnsPacket *p);
 int dns_packet_validate_reply(DnsPacket *p);
+int dns_packet_validate_query(DnsPacket *p);
 
+int dns_packet_append_blob(DnsPacket *p, const void *d, size_t sz, size_t *start);
 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_label(DnsPacket *p, const char *s, size_t l, size_t *start);
 int dns_packet_append_name(DnsPacket *p, const char *name, size_t *start);
-int dns_packet_append_key(DnsPacket *p, const DnsResourceKey *k, 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_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);
 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, size_t *start);
-int dns_packet_read_key(DnsPacket *p, DnsResourceKey *ret, 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);
 
 void dns_packet_rewind(DnsPacket *p, size_t idx);
 
 int dns_packet_skip_question(DnsPacket *p);
-int dns_packet_extract_rrs(DnsPacket *p);
+int dns_packet_extract(DnsPacket *p);
 
 enum {
         DNS_RCODE_SUCCESS = 0,
@@ -177,3 +192,11 @@ DnsProtocol dns_protocol_from_string(const char *s) _pure_;
 
 #define LLMNR_MULTICAST_IPV4_ADDRESS ((struct in_addr) { .s_addr = htobe32(224U << 24 | 252U) })
 #define LLMNR_MULTICAST_IPV6_ADDRESS ((struct in6_addr) { .s6_addr = { 0xFF, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x03 } })
+
+#define DNSKEY_FLAG_ZONE_KEY (1u << 8)
+#define DNSKEY_FLAG_SEP      (1u << 0)
+
+static inline uint16_t dnskey_to_flags(const DnsResourceRecord *rr) {
+        return (rr->dnskey.zone_key_flag * DNSKEY_FLAG_ZONE_KEY |
+                rr->dnskey.sep_flag * DNSKEY_FLAG_SEP);
+}