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Bugfix

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This commit is contained in:
Nick Peng
2018-06-30 00:28:45 +08:00
parent a1906787b1
commit 1a5a0ae2a2
5 changed files with 356 additions and 53 deletions
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31
src/dns.h
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@@ -9,6 +9,7 @@
#define DNS_RR_A_LEN 4
#define DNS_RR_AAAA_LEN 16
#define DNS_MAX_CNAME_LEN 256
#define DNS_MAX_OPT_LEN 256
#define DNS_IN_PACKSIZE (512 * 4)
#define DNS_PACKSIZE (512 * 8)
@@ -44,6 +45,11 @@ typedef enum dns_type {
DNS_T_ALL = 255
} dns_type_t;
typedef enum dns_opt_code {
DNS_OPT_T_ECS = 8,
DNS_OPT_T_ALL = 255
} dns_opt_code_t;
typedef enum dns_opcode {
DNS_OP_QUERY = 0,
DNS_OP_IQUERY = 1,
@@ -128,7 +134,24 @@ struct dns_soa {
unsigned int expire;
unsigned int minimum;
} __attribute__((packed));
;
#define DNS_OPT_ECS_FAMILY_IPV4 1
#define DNS_OPT_ECS_FAMILY_IPV6 2
/* OPT ECS */
struct dns_opt_ecs {
unsigned short family;
unsigned char source_prefix;
unsigned char scope_prefix;
unsigned char addr[DNS_RR_AAAA_LEN];
};
/* OPT */
struct dns_opt {
unsigned short code;
unsigned short length;
unsigned char data[0];
} __attribute__((packed));
struct dns_rrs *dns_get_rrs_next(struct dns_packet *packet, struct dns_rrs *rrs);
struct dns_rrs *dns_get_rrs_start(struct dns_packet *packet, dns_rr_type type, int *count);
@@ -156,6 +179,12 @@ 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_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);
/*
* Packet operation
*/