dns.h

   1 #ifndef DNS_H
   2 #define DNS_H
   3
   4 #include "stralloc.h"
   5 #include "iopause.h"
   6 #include "taia.h"
   7
   8 #define DNS_C_IN "\0\1"
   9 #define DNS_C_ANY "\0\377"
  10
  11 #define DNS_T_A "\0\1"
  12 #define DNS_T_NS "\0\2"
  13 #define DNS_T_CNAME "\0\5"
  14 #define DNS_T_SOA "\0\6"
  15 #define DNS_T_PTR "\0\14"
  16 #define DNS_T_HINFO "\0\15"
  17 #define DNS_T_MX "\0\17"
  18 #define DNS_T_TXT "\0\20"
  19 #define DNS_T_RP "\0\21"
  20 #define DNS_T_SIG "\0\30"
  21 #define DNS_T_KEY "\0\31"
  22 #define DNS_T_AAAA "\0\34"
  23 #define DNS_T_AXFR "\0\374"
  24 #define DNS_T_ANY "\0\377"
  25
  26 struct dns_transmit {
  27   char *query; /* 0, or dynamically allocated */
  28   unsigned int querylen;
  29   char *packet; /* 0, or dynamically allocated */
  30   unsigned int packetlen;
  31   int s1; /* 0, or 1 + an open file descriptor */
  32   int tcpstate;
  33   unsigned int udploop;
  34   unsigned int curserver;
  35   struct taia deadline;
  36   unsigned int pos;
  37   const char *servers;
  38   char localip[4];
  39   char qtype[2];
  40 } ;
  41
  42 extern void dns_random_init(const char *);
  43 extern unsigned int dns_random(unsigned int);
  44
  45 extern void dns_sortip(char *,unsigned int);
  46
  47 extern void dns_domain_free(char **);
  48 extern int dns_domain_copy(char **,const char *);
  49 extern unsigned int dns_domain_length(const char *);
  50 extern int dns_domain_equal(const char *,const char *);
  51 extern int dns_domain_suffix(const char *,const char *);
  52 extern unsigned int dns_domain_suffixpos(const char *,const char *);
  53 extern int dns_domain_fromdot(char **,const char *,unsigned int);
  54 extern int dns_domain_todot_cat(stralloc *,const char *);
  55
  56 extern unsigned int dns_packet_copy(const char *,unsigned int,unsigned int,char *,unsigned int);
  57 extern unsigned int dns_packet_getname(const char *,unsigned int,unsigned int,char **);
  58 extern unsigned int dns_packet_skipname(const char *,unsigned int,unsigned int);
  59
  60 extern int dns_transmit_start(struct dns_transmit *,const char *,int,const char *,const char *,const char *);
  61 extern void dns_transmit_free(struct dns_transmit *);
  62 extern void dns_transmit_io(struct dns_transmit *,iopause_fd *,struct taia *);
  63 extern int dns_transmit_get(struct dns_transmit *,const iopause_fd *,const struct taia *);
  64
  65 extern int dns_resolvconfip(char *);
  66 extern int dns_resolve(const char *,const char *);
  67 extern struct dns_transmit dns_resolve_tx;
  68
  69 extern int dns_ip4_packet(stralloc *,const char *,unsigned int);
  70 extern int dns_ip4(stralloc *,const stralloc *);
  71 extern int dns_name_packet(stralloc *,const char *,unsigned int);
  72 extern void dns_name4_domain(char *,const char *);
  73 #define DNS_NAME4_DOMAIN 31
  74 extern int dns_name4(stralloc *,const char *);
  75 extern int dns_txt_packet(stralloc *,const char *,unsigned int);
  76 extern int dns_txt(stralloc *,const stralloc *);
  77 extern int dns_mx_packet(stralloc *,const char *,unsigned int);
  78 extern int dns_mx(stralloc *,const stralloc *);
  79
  80 extern int dns_resolvconfrewrite(stralloc *);
  81 extern int dns_ip4_qualify_rules(stralloc *,stralloc *,const stralloc *,const stralloc *);
  82 extern int dns_ip4_qualify(stralloc *,stralloc *,const stralloc *);
  83
  84 #endif