diff options
Diffstat (limited to 'ASNMP/asnmp/wpdu.cpp')
| -rw-r--r-- | ASNMP/asnmp/wpdu.cpp | 520 |
1 files changed, 0 insertions, 520 deletions
diff --git a/ASNMP/asnmp/wpdu.cpp b/ASNMP/asnmp/wpdu.cpp deleted file mode 100644 index 43c38d9a5e6..00000000000 --- a/ASNMP/asnmp/wpdu.cpp +++ /dev/null @@ -1,520 +0,0 @@ -// $Id$ - -// ============================================================================ -// = LIBRARY -// asnmp -// -// = FILENAME -// wpdu.cpp -// -// = DESCRIPTION -// Adapter class. Converts between raw wire format and Pdu objects -// that can be stuffed out a I/O port or reconstructed -// -// = AUTHOR -// Michael R. MacFaden rework the class api and impl using ACE -// Peter E Mellquist implementation/code from snmp++ snmpmsg class -// -// ============================================================================ - -#include "asnmp/wpdu.h" -#include <ace/Log_Msg.h> - -#define DEFINE_TRAP_CONSTANTS_ -#include "asnmp/enttraps.h" - -ACE_RCSID(asnmp, wpdu, "$Id$") - -#define MAX_COMM_STR_LEN 255 -#define V1_COLD_START 0 -#define V1_WARM_START 1 -#define V1_LINK_DOWN 2 -#define V1_LINK_UP 3 -#define V1_AUTH_FAILURE 4 -#define V1_EGP_NEIGHBOR_LOSS 5 -#define V1_ENT_SPECIFIC 6 - -inline -void reset_iov(iovec& iov) -{ - iov.iov_base = 0; - iov.iov_len = 0; -} - -wpdu::wpdu(const Pdu& pdu, const UdpTarget& target): - valid_flag_(SNMP_CLASS_INVALID ), comm_len(MAX_COMM_STR_LEN) -{ - reset_iov(iovec_); - version_ = target.get_version(); - int status; - OctetStr comm_str; - - community_name[0] = 0; - - snmp_pdu *raw_pdu; // create a raw pdu - raw_pdu = cmu_snmp::pdu_create( (int) pdu.get_type()); - if (!raw_pdu) { - valid_flag_ = SNMP_CLASS_RESOURCE_UNAVAIL; - return; - } - - raw_pdu->reqid = pdu.get_request_id(); - raw_pdu->errstat= (unsigned long) pdu.get_error_status(); - raw_pdu->errindex= (unsigned long) pdu.get_error_index(); - - switch (raw_pdu->command) { - case sNMP_PDU_GET: - case sNMP_PDU_GETNEXT: - target.get_read_community(comm_str); - break; - - case sNMP_PDU_SET: - target.get_write_community(comm_str); - break; - - case sNMP_PDU_V1TRAP: - target.get_read_community(comm_str); - if (set_trap_info(raw_pdu, pdu)) // will free raw_pdu - return; - break; - case sNMP_PDU_RESPONSE: - break; - - default: - ACE_ASSERT(0); - return; - } - - if (load_vbs(raw_pdu, pdu)) { - cmu_snmp::free_pdu( raw_pdu); - valid_flag_ = SNMP_CLASS_RESOURCE_UNAVAIL; - return; - } - - // TODO: determine how big raw_pdu serializes out to - iovec_.iov_len = target.get_max_pdu_size(); - ACE_NEW(iovec_.iov_base, char [iovec_.iov_len]); - - // create raw byte stream - status = cmu_snmp::build( raw_pdu, - (unsigned char *)iovec_.iov_base, - (int *) &iovec_.iov_len, - target.get_version(), - comm_str.data(), comm_str.length()); - if ( status != 0) { - valid_flag_ = SNMP_ERROR_WRONG_ENCODING; - cmu_snmp::free_pdu( raw_pdu); - return; - } - - cmu_snmp::free_pdu( raw_pdu); - valid_flag_ = SNMP_CLASS_SUCCESS; -} - -int wpdu::set_trap_info(snmp_pdu *raw_pdu, const Pdu& pdu) const -{ - Oid enterprise; - Oid trapid; // validate caller has set this correctly - pdu.get_notify_id( trapid); - if ( !trapid.valid() || trapid.length() < 2 ) { - cmu_snmp::free_pdu( raw_pdu); - return SNMP_CLASS_INVALID_NOTIFYID; - } - - - raw_pdu->specific_type=0; - - // TODO: object should emit numeric instead of this kind of mess... - if ( trapid == coldStart) - raw_pdu->trap_type = V1_COLD_START; // cold start - else if ( trapid == warmStart) - raw_pdu->trap_type = V1_WARM_START; // warm start - else if( trapid == linkDown) - raw_pdu->trap_type = V1_LINK_DOWN; // link down - else if ( trapid == linkUp) - raw_pdu->trap_type = V1_LINK_UP; // link up - else if ( trapid == authenticationFailure ) - raw_pdu->trap_type = V1_AUTH_FAILURE; // authentication failure - else if ( trapid == egpNeighborLoss) - raw_pdu->trap_type = V1_EGP_NEIGHBOR_LOSS; // egp neighbor loss - else { - raw_pdu->trap_type = V1_ENT_SPECIFIC; // enterprise specific - // last oid subid is the specific value - // if 2nd to last subid is "0", remove it - // enterprise is always the notify oid prefix - raw_pdu->specific_type = (int) trapid[(int) (trapid.length() - 1)]; - trapid.trim(1); - if ( trapid[(int)(trapid.length() - 1)] == 0 ) - trapid.trim(1); - enterprise = trapid; - } - - if ( raw_pdu->trap_type != V1_ENT_SPECIFIC) - pdu.get_notify_enterprise( enterprise); - if ( enterprise.length() > 0) { - // note!! To the contrary, enterprise OID val is - // copied here and raw_pdu->enterprise is freed in free_pdu - // as it should be (HDN) - // these are hooks into an SNMP++ oid - // and therefor the raw_pdu enterprise - // should not free them. null them out!! - SmiLPOID rawOid; - rawOid = enterprise.oidval(); - // HDN - enterprise is a local object, cannot simply assign pointer - //raw_pdu->enterprise = rawOid->ptr; - raw_pdu->enterprise_length = (int) rawOid->len; - ACE_NEW_RETURN(raw_pdu->enterprise, - oid[raw_pdu->enterprise_length],-1); - ACE_OS::memcpy((char *)raw_pdu->enterprise,(char *)rawOid->ptr, - raw_pdu->enterprise_length * sizeof(oid)); - } - - TimeTicks timestamp; - pdu.get_notify_timestamp( timestamp); - raw_pdu->time = ( unsigned long) timestamp; - - // HDN - set agent addr using the local hostname if possible - char localHostName[MAXHOSTNAMELEN]; - Snmp::get_host_name(localHostName, MAXHOSTNAMELEN); - if (ACE_OS::strlen(localHostName) > 0) { - GenAddress addr(localHostName); - OctetStr octet; - addr.to_octet(octet); - ACE_OS::memcpy(&(raw_pdu->agent_addr.sin_addr), - octet.data(), - octet.length()); - } - - return 0; -} - -wpdu::wpdu(const iovec& iov): valid_flag_(0),comm_len(MAX_COMM_STR_LEN) -{ - community_name[0] = 0; - reset_iov(iovec_); - version_ = version1; // TODO: figure where this should come from - ACE_NEW(iovec_.iov_base, char[iov.iov_len]); - if (!iovec_.iov_base) { - valid_flag_ = SNMP_CLASS_RESOURCE_UNAVAIL; - return; - } - - copy_iovec(iovec_, iov); - valid_flag_ = SNMP_CLASS_SUCCESS; -} - -wpdu::wpdu(): valid_flag_(0), comm_len(MAX_COMM_STR_LEN) -{ - community_name[0] = 0; - reset_iov(iovec_); - version_ = version1; // TODO: figure where this should come from -} - -int wpdu::valid() const -{ - return (valid_flag_ == SNMP_CLASS_SUCCESS); -} - -int wpdu::load_vbs(snmp_pdu *raw_pdu, const Pdu& pdu) -{ - int status = 0; - - // load up the payload - // for all Vbs in list, add them to the pdu - int vb_count; - Vb tempvb; - Oid tempoid; - SmiLPOID smioid; - SmiVALUE smival; - - vb_count = pdu.get_vb_count(); - - for (int z = 0; z < vb_count; z++) { - pdu.get_vb( tempvb, z); - tempvb.get_oid( tempoid); - smioid = tempoid.oidval(); - // what are we trying to convert here (vb oid part or value part) - status = convert_vb_to_smival( tempvb, &smival ); - if ( status != SNMP_CLASS_SUCCESS) - return status; - - // add the var to the raw pdu - cmu_snmp::add_var(raw_pdu, smioid->ptr, (int) smioid->len, &smival); - free_smival_descriptor( &smival); - } - - return status; -} - -// supports overlapped copies -// static -void wpdu::copy_iovec(iovec& dest, const iovec& src) -{ - if (&dest == &src) - return; - - ACE_OS:: memmove( dest.iov_base, src.iov_base, src.iov_len); - dest.iov_len = src.iov_len; -} - -int wpdu::convert_vb_to_smival( Vb &tempvb, SmiVALUE *smival ) -{ - smival->syntax = tempvb.get_syntax(); - - switch ( smival->syntax ) { - - case sNMP_SYNTAX_NULL: - break; - - // case sNMP_SYNTAX_INT32: - case sNMP_SYNTAX_INT: - { - SnmpInt32 tmp; - tempvb.get_value(tmp); - smival->value.sNumber = tmp; - } - break; - - // case sNMP_SYNTAX_UINT32: - case sNMP_SYNTAX_GAUGE32: - case sNMP_SYNTAX_CNTR32: - case sNMP_SYNTAX_TIMETICKS: - { - SnmpUInt32 tmp; - tempvb.get_value(tmp); - smival->value.uNumber = tmp; - } - break; - - // case Counter64 - case sNMP_SYNTAX_CNTR64: - { - Counter64 c64; - tempvb.get_value(c64); - smival->value.hNumber.hipart = c64.high(); - smival->value.hNumber.lopart = c64.low(); - } - break; - - // OID syntax - case sNMP_SYNTAX_OID: - { - Oid tmpoid; - tmpoid.oidval(); - tempvb.get_value(tmpoid); - SmiLPOID smi = tmpoid.oidval(); - smival->value.oid.len = tmpoid.length(); - ACE_NEW_RETURN(smival->value.oid.ptr, - SmiUINT32 [smival->value.oid.len], 1); - ACE_OS::memcpy(smival->value.oid.ptr, smi->ptr, - smival->value.oid.len *sizeof(SmiUINT32)); - } - break; - - case sNMP_SYNTAX_BITS: - case sNMP_SYNTAX_OCTETS: - case sNMP_SYNTAX_IPADDR: - { - OctetStr os; - tempvb.get_value(os); - smival->value.string.ptr = 0; - smival->value.string.len = os.length(); - if ( smival->value.string.len > 0 ) { - ACE_NEW_RETURN(smival->value.string.ptr, - SmiBYTE [smival->value.string.len], 1); - if ( smival->value.string.ptr ) { - for (int i=0; i<(int) smival->value.string.len ; i++) - smival->value.string.ptr[i] = os[i]; - } - else { - smival->syntax = sNMP_SYNTAX_NULL; // invalidate the smival - return SNMP_CLASS_RESOURCE_UNAVAIL; - } - } - } - break; - - default: - ACE_DEBUG((LM_DEBUG, "wpdu::convert_vb_to_smival did not convert vb\n")); - // ACE_ASSERT(0); - } // switch - - return 0; -} - -// free a SMI value -void wpdu::free_smival_descriptor( SmiVALUE *smival ) -{ - switch ( smival->syntax ) { - case sNMP_SYNTAX_OCTETS: - case sNMP_SYNTAX_OPAQUE: - case sNMP_SYNTAX_IPADDR: - case sNMP_SYNTAX_BITS: // obsoleted in SNMPv2 Draft Std - delete [] smival->value.string.ptr; - break; - - case sNMP_SYNTAX_OID: - delete [] smival->value.oid.ptr; - break; - } - smival->syntax = sNMP_SYNTAX_NULL; -} - - -wpdu::~wpdu() -{ - delete [] iovec_.iov_base; -} - -const iovec& wpdu::get_buffer() const -{ - return iovec_; -} - -// return a pdu from a buffer -int wpdu::get_pdu(Pdu& pdu, snmp_version& version) -{ - if (iovec_.iov_len == 0) - return -1; // NO DATA - - snmp_pdu *raw_pdu; - raw_pdu = cmu_snmp::pdu_create(0); - if (!raw_pdu) { - return SNMP_CLASS_RESOURCE_UNAVAIL; - } - - // max value a client can send us - TODO: replace this with an - // api to get actual string length - int status = cmu_snmp::parse( raw_pdu, (unsigned char *)iovec_.iov_base, - community_name, comm_len, - version, iovec_.iov_len); - if (status != 0) - return SNMP_CLASS_INTERNAL_ERROR; - - community_name[comm_len] = 0; // set null based on returned length - set_request_id( &pdu, raw_pdu->reqid); - set_error_status( &pdu, (int) raw_pdu->errstat); - set_error_index( &pdu, (int) raw_pdu->errindex); - pdu.set_type( raw_pdu->command); - - if (restore_vbs(pdu, raw_pdu)) { - cmu_snmp::free_pdu(raw_pdu); - return SNMP_CLASS_INTERNAL_ERROR; - } - - cmu_snmp::free_pdu(raw_pdu); - return 0; -} - -int wpdu::restore_vbs(Pdu& pdu, const snmp_pdu *raw_pdu) const -{ - Vb tempvb; - Oid tempoid; - struct variable_list *vp; - - for(vp = raw_pdu->variables; vp; vp = vp->next_variable) { - - // extract the oid portion - tempoid.set_data( (unsigned long *)vp->name, - ( unsigned int) vp->name_length); - tempvb.set_oid( tempoid); - - // extract the value portion - switch(vp->type) { - - // octet string - case sNMP_SYNTAX_OCTETS: - case sNMP_SYNTAX_OPAQUE: - { - OctetStr octets( (char *) vp->val.string, - (long) vp->val_len); - tempvb.set_value( octets); - } - break; - - // object id - case sNMP_SYNTAX_OID: - { - Oid oid( (unsigned long*) vp->val.objid, - (int) vp->val_len); - tempvb.set_value( oid); - } - break; - - // timeticks - case sNMP_SYNTAX_TIMETICKS: - { - TimeTicks timeticks( (unsigned long) *(vp->val.integer)); - tempvb.set_value( timeticks); - } - break; - - // 32 bit counter - case sNMP_SYNTAX_CNTR32: - { - Counter32 counter32( (unsigned long) *(vp->val.integer)); - tempvb.set_value( counter32); - } - break; - - // ip address - case sNMP_SYNTAX_IPADDR: - { - char buffer[20]; - sprintf( buffer,"%d.%d.%d.%d", - vp->val.string[0], - vp->val.string[1], - vp->val.string[2], - vp->val.string[3]); - IpAddress ipaddress( buffer); - tempvb.set_value( ipaddress); - } - break; - - // 32 bit integer - case sNMP_SYNTAX_INT: - { - SnmpInt32 int32( (long) *(vp->val.integer)); - tempvb.set_value( int32); - } - break; - - // 32 bit unsigned integer - case sNMP_SYNTAX_UINT32: - { - SnmpUInt32 uint32( (unsigned long) *(vp->val.integer)); - tempvb.set_value( uint32); - } - break; - - // v2 counter 64's - case sNMP_SYNTAX_CNTR64: - break; - - case sNMP_SYNTAX_NULL: - tempvb.set_null(); - break; - - // v2 vb exceptions - case sNMP_SYNTAX_NOSUCHOBJECT: - case sNMP_SYNTAX_NOSUCHINSTANCE: - case sNMP_SYNTAX_ENDOFMIBVIEW: - set_exception_status( &tempvb, vp->type); - break; - - default: - tempvb.set_null(); - - } // end switch - - // append the vb to the pdu - pdu += tempvb; - } - - return 0; -} - -const unsigned char *wpdu::get_community() const -{ - return community_name; -} |