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ADD EDNS check feature, TCP server bugfix

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This commit is contained in:
Nick Peng
2018-12-20 00:16:32 +08:00
parent 3d8155e67b
commit 40740f531b
8 changed files with 230 additions and 52 deletions
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11
src/dns.h
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@@ -12,6 +12,7 @@
#define DNS_MAX_OPT_LEN 256
#define DNS_IN_PACKSIZE (512 * 4)
#define DNS_PACKSIZE (512 * 8)
#define DNS_DEFAULT_PACKET_SIZE 512
typedef enum dns_qr {
DNS_QR_QUERY = 0,
@@ -23,7 +24,8 @@ typedef enum dns_rr_type {
DNS_RRS_AN = 1,
DNS_RRS_NS = 2,
DNS_RRS_NR = 3,
DNS_RRS_END = 4,
DNS_RRS_OPT = 4,
DNS_RRS_END,
} dns_rr_type;
typedef enum dns_class { DNS_C_IN = 1, DNS_C_ANY = 255 } dns_class_t;
@@ -104,6 +106,9 @@ struct dns_packet {
unsigned short answers;
unsigned short nameservers;
unsigned short additional;
unsigned short optcount;
unsigned short optional;
unsigned short payloadsize;
int size;
int len;
unsigned char data[0];
@@ -180,8 +185,8 @@ int dns_get_AAAA(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, unsig
int dns_add_SOA(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, struct dns_soa *soa);
int dns_get_SOA(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, struct dns_soa *soa);
int dns_add_OPT(struct dns_packet *packet, dns_rr_type type, unsigned short opt_code, unsigned short opt_len, struct dns_opt *opt);
int dns_get_OPT(struct dns_rrs *rrs, unsigned short *opt_code, unsigned short *opt_len, struct dns_opt *opt, int *opt_maxlen);
int dns_set_OPT_payload_size(struct dns_packet *packet, int payload_size);
int dns_get_OPT_payload_size(struct dns_packet *packet);
int dns_add_OPT_ECS(struct dns_packet *packet, dns_rr_type type, struct dns_opt_ecs *ecs);
int dns_get_OPT_ECS(struct dns_rrs *rrs, unsigned short *opt_code, unsigned short *opt_len, struct dns_opt_ecs *ecs);