daxi20/smartdns
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This commit is contained in:
Nick Peng
2018-05-17 00:03:00 +08:00
parent 924745da04
commit b7b49decc0
3 changed files with 120 additions and 248 deletions
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16
dns.h
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@@ -8,7 +8,9 @@
#define DNS_RR_A_LEN 4
#define DNS_RR_AAAA_LEN 16
#define DNS_MAX_CNAME_LEN 128
#define DNS_MAX_CNAME_LEN 256
#define DNS_IN_PACKSIZE 512
#define DNS_PACKSIZE (512 * 2)
typedef enum dns_rr_type {
DNS_RRS_QD = 0,
@@ -125,18 +127,22 @@ int dns_add_CNAME(struct dns_packet *packet, dns_rr_type type, char *domain, int
int dns_get_CNAME(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, char *cname, int cname_size);
int dns_add_A(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, unsigned char addr[4]);
int dns_add_A(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, unsigned char addr[DNS_RR_A_LEN]);
int dns_get_A(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, unsigned char addr[4]);
int dns_get_A(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, unsigned char addr[DNS_RR_A_LEN]);
int dns_add_PTR(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, char *cname);
int dns_get_PTR(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, char *cname, int cname_size);
int dns_add_AAAA(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, unsigned char addr[16]);
int dns_add_AAAA(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, unsigned char addr[DNS_RR_AAAA_LEN]);
int dns_get_AAAA(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, unsigned char addr[16]);
int dns_get_AAAA(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, unsigned char addr[DNS_RR_AAAA_LEN]);
/*
* Packet operation
*/
int dns_decode(struct dns_packet *packet, int maxsize, unsigned char *data, int size);
int dns_encode(unsigned char *data, int size, struct dns_packet *packet);