Branch: Tag:

2001-03-30

2001-03-30 09:26:35 by Honza Petrous <hop@unibase.cz>

New attempt. Server part is now running. More changes will be follow :)

Rev: lib/modules/Protocols.pmod/SNMP.pmod/getcmd.pike:1.2
Rev: lib/modules/Protocols.pmod/SNMP.pmod/protocol.pike:1.2
Rev: lib/modules/Protocols.pmod/SNMP.pmod/snmp_errors.h:1.2
Rev: lib/modules/Protocols.pmod/SNMP.pmod/snmp_globals.h:1.2

4:   //:   //: RFC:   //: implemented (yet): - //: 1157 - v1 (only `TRAP' PDU is missing) + //: 1155-7 : v1 + //: 1901-4 : v2/community (Bulk ops aren't implemented!)   //: planned: - //: 1901 - v2/community - //: 2570 - v3 description + // 2742 : agentX + //: 2570 : v3 description   //:    - //: For debuging use -DDEBUG_PIKE_PROTOCOL_SNMP=1 + // $Id: protocol.pike,v 1.2 2001/03/30 09:26:34 hop Exp $    -  +    #include "snmp_globals.h"   #include "snmp_errors.h"   
65: Inside #if 1
   contents = data->get_fix_string(len);       int tag = raw_tag & 0xdf; // Class and tag bits + //werror(sprintf("DEBx: tag=%O\n",tag));       program p = types[tag];   
84: Inside #if 1
   }       object res = p(); -  +     // hop: For non-universal classes we provide tag number    if(tag & 0xC0)    res = p(tag & 0x1F, ({}));
125: Inside #if 1
   19 : Standards.ASN1.Types.asn1_printable_string,    20 : Standards.ASN1.Types.asn1_teletex_string,    23 : Standards.ASN1.Types.asn1_utc, +     // from RFC-1065 :    64 : asn1_application_octet_string, // ipaddress    65 : asn1_application_integer, // counter    66 : asn1_application_integer, // gauge    67 : asn1_application_integer, // timeticks -  68 : asn1_application_octet_string // opaque +  68 : asn1_application_octet_string, // opaque +  +  // v2 +  70 : asn1_application_integer, // counter64 +  +  // context PDU +  128 : Protocols.LDAP.ldap_privates.asn1_context_sequence, +  129 : Protocols.LDAP.ldap_privates.asn1_context_sequence, +  130 : Protocols.LDAP.ldap_privates.asn1_context_sequence, +  131 : Protocols.LDAP.ldap_privates.asn1_context_sequence    ]);      object|mapping snmp_der_decode(string data)
206:    //: returns the whole SNMP message in raw format    mapping rv;    - #if 1 +     rv = read(); - #else -  if(catch { rv = read(); }) { -  //seterr or _READ_ERROR ? -  THROW(({"SNMP.protocol: read error.\n",backtrace()})); -  } - #endif -  +     return(rv);   }    - void to_pool(mapping rawd) { -  //: decode ASN1 data and put it into pool, if garbaged ignore it + mapping decode_asn1_msg(mapping rawd) { +  //: decode ASN1 data, if garbaged ignore it       object xdec = snmp_der_decode(rawd->data);    string msgid = (string)xdec->elements[2]->elements[0]->value;
229:    "error-status":errno,    "error-string":snmp_errlist[errno],    "error-index":xdec->elements[2]->elements[2]->value, +  "version":xdec->elements[0]->value, +  "community":xdec->elements[1]->value, +  "op":xdec->elements[2]->get_tag(),    "attribute":Array.map(xdec->elements[2]->elements[3]->elements, lambda(object duo) { return(([(array(string))(duo->elements[0]->id)*".":duo->elements[1]->value])); } )    ]);    -  // to the queue -  msgpool += ([msgid:msg]); +  return(([msgid:msg])); + }    -  +  + void to_pool(mapping rawd) { +  //: put decoded msg to the pool +  +  msgpool += decode_asn1_msg(rawd); +    }      mapping|int from_pool(string msgid) {
300:   }      //: - //: get_response + //: read_response   //: - array(mapping)|int get_response(int msgid) { + array(mapping)|int read_response(int msgid) {    //: GetResponse-PDU low call    mapping rawpdu = readmsg_from_pool(msgid);   
340:      }    + object mk_asn1_val(string type, int|string val) { + // returns appropriate ASN.1 value    -  +  object rv; +  +  switch(type) { +  case "oid": // OID +  rv = Standards.ASN1.Types.asn1_identifier( +  @Array.map(val/".", lambda(string el){ return((int)el);})); +  break; +  +  case "int": // INTEGER +  rv = Standards.ASN1.Types.asn1_integer(val); +  break; +  +  case "str": // STRING +  rv = Standards.ASN1.Types.asn1_octet_string(val); +  break; +  +  case "ipaddr": // ipAddress +  rv = asn1_application_octet_string(0,val[..3]); +  break; +  +  case "count": // COUNTER +  rv = asn1_application_integer(1,val); +  break; +  +  case "gauge": // GAUGE +  rv = asn1_application_integer(2,val); +  break; +  +  case "tick": // TICK +  rv = asn1_application_integer(3,val); +  break; +  +  case "opaque": // OPAQUE +  rv = asn1_application_octet_string(4,val); +  break; +  +  case "count64": // COUNTER64 - v2 object +  rv = asn1_application_integer(6,val); +  break; +  +  default: // bad type! +  return 0; +  } +  +  return rv; + } +    //: -  + //: get_response + //: + int get_response(mapping varlist, mapping origdata, int|void errcode, int|void erridx) { +  //: GetResponse-PDU low call +  object pdu; +  int id = indices(origdata)[0], flg; +  array vararr = ({}); +  +  foreach(indices(varlist), string varname) +  if(arrayp(varlist[varname]) || sizeof(varlist[varname]) > 1) { +  vararr += ({Standards.ASN1.Types.asn1_sequence( +  ({Standards.ASN1.Types.asn1_identifier( +  @Array.map(varname/".", lambda(string el){ return((int)el);})), +  mk_asn1_val(varlist[varname][0], varlist[varname][1])}) +  )}); +  } +  +  pdu = Protocols.LDAP.ldap_privates.asn1_context_sequence(2, +  ({Standards.ASN1.Types.asn1_integer(id), // request-id +  Standards.ASN1.Types.asn1_integer(errcode), // error-status +  Standards.ASN1.Types.asn1_integer(erridx), // error-index +  Standards.ASN1.Types.asn1_sequence(vararr)}) +  ); +  +  // now we have PDU ... +  flg = writemsg(origdata[id]->ip||remote_host, origdata[id]->port||port, pdu); +  +  return id; +  + } +  +  + //:   //: get_nextrequest   //:   int get_nextrequest(array(string) varlist, string|void rem_addr,
371:      }    - object mktype(array(mixed) varval) { + //: + //: set_request + //: + int set_request(mapping varlist, string|void rem_addr, +  int|void rem_port) { +  //: SetRequest-PDU low call +  object pdu; +  int id = get_req_id(), flg; +  array vararr = ({});    -  if(sizeof(varval) != 2) // error! -  return 0; +  foreach(indices(varlist), string varname) +  vararr += ({Standards.ASN1.Types.asn1_sequence( +  ({Standards.ASN1.Types.asn1_identifier( +  @Array.map(varname/".", lambda(string el){ return((int)el);})), +  mk_asn1_val(varlist[varname][0], varlist[varname][1])}) +  )});    -  switch(varval[0]) { -  case "i": // integer -  return Standards.ASN1.Types.asn1_integer(varval[1]); +  pdu = Protocols.LDAP.ldap_privates.asn1_context_sequence(3, +  ({Standards.ASN1.Types.asn1_integer(id), // request-id +  Standards.ASN1.Types.asn1_integer(0), // error-status +  Standards.ASN1.Types.asn1_integer(0), // error-index +  Standards.ASN1.Types.asn1_sequence(vararr)}) +  );    -  case "s": // string -  return Standards.ASN1.Types.asn1_octet_string(varval[1]); -  } +  // now we have PDU ... +  flg = writemsg(rem_addr||remote_host, rem_port || port, pdu);    -  return 0; +  return id;   }      //: - //: set_request + //: trap   //: - int set_request(mapping varlist, string|void rem_addr, + int trap(mapping varlist, string|void rem_addr,    int|void rem_port) { -  //: SetRequest-PDU low call +  //: Trap-PDU low call    object pdu;    int id = get_req_id(), flg;    array vararr = ({});       foreach(indices(varlist), string varname)    vararr += ({Standards.ASN1.Types.asn1_sequence( -  ({Standards.ASN1.Types.asn1_identifier(@Array.map(varname/".", lambda(string el){ return((int)el);})), -  mktype(varlist[varname])}) +  ({Standards.ASN1.Types.asn1_identifier( +  @Array.map(varname/".", lambda(string el){ return((int)el);})), +  mk_asn1_val(varlist[varname][0], varlist[varname][1])})    )});    -  pdu = Protocols.LDAP.ldap_privates.asn1_context_sequence(3, +  pdu = Protocols.LDAP.ldap_privates.asn1_context_sequence(4,    ({Standards.ASN1.Types.asn1_integer(id), // request-id    Standards.ASN1.Types.asn1_integer(0), // error-status    Standards.ASN1.Types.asn1_integer(0), // error-index