pike.git/ lib/ modules/ Protocols.pmod/ DNS.pmod

2003-04-22

2003-04-22 22:18:11 by Marcus Comstedt <marcus@mc.pp.se>

• e94d1ac773c5d6c59149fd715e487b9b94842679 (49 lines) (+32/-17) ^{[ Show | Annotate ]}
  Branch: 7.9

Change ->a => ->aaaa for AAAA RR:s, and support IPv6 reverse lookup.

Rev: lib/modules/Protocols.pmod/DNS.pmod:1.76

1: - // $Id: DNS.pmod,v 1.75 2003/04/22 21:56:43 nilsson Exp $ + // $Id: DNS.pmod,v 1.76 2003/04/22 22:18:11 marcus Exp $   // Not yet finished -- Fredrik Hubinette      //! Domain Name System
123:    }    }    +  static string make_raw_addr6(string addr6) +  { +  if(!addr6) return "\0"*16; +  if(has_value(addr6, "::")) { +  int parts = sizeof((addr6/":")-({""})); +  if(has_value(addr6, ".")) parts++; +  addr6 = replace(addr6, "::", ":"+"0:"*(8-parts)); +  sscanf(addr6, ":%s", addr6); +  } +  if(has_value(addr6, ".")) +  return sprintf("%2c%2c%2c%2c%2c%2c%c%c%c%c", +  array_sscanf(addr6, "%x:%x:%x:%x:%x:%x:%x.%x.%x.%x")); +  else +  return sprintf("%@2c", +  array_sscanf(addr6, "%x:%x:%x:%x:%x:%x:%x:%x")); +  } +     static private string mkrdata(mapping entry, int pos, mapping(string:int) c)    {    switch(entry->type) {
156:    case T_A:    return sprintf("%@1c", (array(int))((entry->a||"0.0.0.0")/".")[0..3]);    case T_AAAA: -  string addr6 = entry->a||"::"; -  if(has_value(addr6, "::")) { -  int parts = sizeof((addr6/":")-({""})); -  if(has_value(addr6, ".")) parts++; -  addr6 = replace(addr6, "::", ":"+"0:"*(8-parts)); -  sscanf(addr6, ":%s", addr6); -  } -  if(has_value(addr6, ".")) -  return sprintf("%2c%2c%2c%2c%2c%2c%c%c%c%c", -  array_sscanf(addr6, "%x:%x:%x:%x:%x:%x:%x.%x.%x.%x")); -  else -  return sprintf("%@2c", -  array_sscanf(addr6, "%x:%x:%x:%x:%x:%x:%x:%x")); +  return make_raw_addr6(entry->aaaa);    case T_SOA:    string mname = mkname(entry->mname, pos, c);    return mname + mkname(entry->rname, pos+sizeof(mname), c) +
376:    m->a=sprintf("%{.%d%}",values(s[next[0]..next[0]+m->len-1]))[1..];    break;    case T_AAAA: -  m->a=sprintf("%{:%02X%02X%}", +  m->aaaa=sprintf("%{:%02X%02X%}",    values(s[next[0]..next[0]+m->len-1])/2)[1..];    break;    case T_SOA:
921:       string arpa_from_ip(string ip)    { +  if(has_value(ip,':')) { +  string raw_ipv6 = make_raw_addr6(ip); +  return reverse(sprintf("%@02X", values(raw_ipv6)))/1*"."+".IP6.ARPA"; +  } else    return reverse(ip/".")*"."+".IN-ADDR.ARPA";    }       string ip_from_arpa(string arpa)    { -  return reverse(arpa/".")[2..]*"."; +  array(string) parts = reverse(arpa/"."); +  if(sizeof(parts)<2) return ""; +  if(lower_case(parts[1]) == "ip6") +  return map(parts[2..]/4, `*, "")*":"; +  else +  return parts[2..]*".";    }       //! @decl array gethostbyaddr(string hostip)