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

1998-01-11

1998-01-11 21:15:04 by Henrik Grubbström (Grubba) <grubba@grubba.org>

• 6256277c146528e4193301e43832bfe3b6c11a8d (48 lines) (+32/-16) ^{[ Show | Annotate ]}
  Branch: 7.9

Now scans through all nameservers and not only the last one.

Rev: lib/modules/Protocols.pmod/DNS.pmod:1.7

211:   class client {    inherit protocol;    -  string nameserver; +  array(string) nameservers = ({});    array domains = ({});    void create(void|string server)    {    if(!server)    {    string domain; -  foreach(Stdio.read_file("/etc/resolv.conf")/"\n", string line) +  string resolv_conf = Stdio.read_file("/etc/resolv.conf"); +  +  if (!resolv_conf) { +  throw(({ "Protocols.DNS.client(): No /etc/resolv.conf!\n", +  backtrace() })); +  } +  +  foreach(resolv_conf/"\n", string line)    {    string rest;    sscanf(line,"%s#",line);
240:    break;       case "nameserver": -  nameserver=rest; +  nameservers += ({ rest });    break;    }    } -  +  if (!sizeof(nameservers)) { +  nameservers = ({ "127.0.0.1" }); +  }    if(domain)    domains = ({ domain }) + domains;    } else { -  nameserver=server; +  nameservers= ({ server });    }    }   
257:    {    object udp=spider.dumUDP();    udp->bind(0); -  udp->send(nameserver,53,s); +  udp->send(nameservers[0],53,s);    mapping m;    do {    m=udp->read();    } while (m->port != 53 || -  m->ip != nameserver || +  m->ip != nameservers[0] ||    m->data[0..1]!=s[0..1]);    return decode_res(m->data);    }
391:    destruct(r);    }    -  void retry(object(Request) r) +  void retry(object(Request) r, void|int nsno)    {    if(!r) return; -  +  if (nsno >= sizeof(nameservers)) {    if(r->retries++ > 12)    {    call_out(remove,120,r); -  }else{ -  call_out(retry,5,r); -  send(nameserver,53,r->req); +  return; +  } else { +  nsno = 0;    }    }    -  +  send(nameservers[nsno],53,r->req); +  call_out(retry,5,r,nsno+1); +  } +     void do_query(string domain, int cl, int type,    function(string,mapping,mixed...:void) callback,    mixed ... args)
419:    r->callback=callback;    r->args=args;    requests[id]=r; -  call_out(retry,5,r); -  udp::send(nameserver,53,r->req); +  udp::send(nameservers[0],53,r->req); +  call_out(retry,5,r,1);    }       static private void rec_data()    {    mapping m=udp::read(); -  if(m->port != 53 || m->ip != nameserver) return; +  if(m->port != 53 || search(nameservers, m->ip) == -1) return;    sscanf(m->data,"%2c",int id);    object r=requests[id];    if(!r) return;