diff options
Diffstat (limited to 'src/resolve/resolved-dns-packet.h')
| -rw-r--r-- | src/resolve/resolved-dns-packet.h | 40 |
1 files changed, 11 insertions, 29 deletions
diff --git a/src/resolve/resolved-dns-packet.h b/src/resolve/resolved-dns-packet.h index 90b5a7c8bd..a6b88e6c79 100644 --- a/src/resolve/resolved-dns-packet.h +++ b/src/resolve/resolved-dns-packet.h @@ -65,6 +65,9 @@ struct DnsPacketHeader { /* RFC 1035 say 512 is the maximum, for classic unicast DNS */ #define DNS_PACKET_UNICAST_SIZE_MAX 512 +/* With EDNS0 we can use larger packets, default to 4096, which is what is commonly used */ +#define DNS_PACKET_UNICAST_SIZE_LARGE_MAX 4096 + #define DNS_PACKET_SIZE_START 512 struct DnsPacket { @@ -85,8 +88,10 @@ struct DnsPacket { uint16_t sender_port, destination_port; uint32_t ttl; - bool extracted; - bool refuse_compression; + bool on_stack:1; + bool extracted:1; + bool refuse_compression:1; + bool canonical_form:1; }; static inline uint8_t* DNS_PACKET_DATA(DnsPacket *p) { @@ -159,7 +164,10 @@ int dns_packet_append_raw_string(DnsPacket *p, const void *s, size_t size, size_ 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_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_rr(DnsPacket *p, const DnsResourceRecord *rr, size_t *start, size_t *rdata_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); @@ -217,32 +225,6 @@ 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); -} - -/* http://tools.ietf.org/html/rfc4034#appendix-A.1 */ -enum { - DNSSEC_ALGORITHM_RSAMD5 = 1, - DNSSEC_ALGORITHM_DH, - DNSSEC_ALGORITHM_DSA, - DNSSEC_ALGORITHM_ECC, - DNSSEC_ALGORITHM_RSASHA1, - DNSSEC_ALGORITHM_DSA_NSEC3_SHA1, - DNSSEC_ALGORITHM_RSASHA1_NSEC3_SHA1, - DNSSEC_ALGORITHM_INDIRECT = 252, - DNSSEC_ALGORITHM_PRIVATEDNS, - DNSSEC_ALGORITHM_PRIVATEOID, - _DNSSEC_ALGORITHM_MAX_DEFINED -}; - -const char* dnssec_algorithm_to_string(int i) _const_; -int dnssec_algorithm_from_string(const char *s) _pure_; - static inline uint64_t SD_RESOLVED_FLAGS_MAKE(DnsProtocol protocol, int family) { /* Converts a protocol + family into a flags field as used in queries */ |