diff options
| -rw-r--r-- | pysnmp/proto/secmod/rfc2576.py | 100 |
1 files changed, 75 insertions, 25 deletions
diff --git a/pysnmp/proto/secmod/rfc2576.py b/pysnmp/proto/secmod/rfc2576.py index 69794272..3e4b96c1 100644 --- a/pysnmp/proto/secmod/rfc2576.py +++ b/pysnmp/proto/secmod/rfc2576.py @@ -38,7 +38,7 @@ class SnmpV1SecurityModel(base.AbstractSecurityModel): nextMibNode = snmpTargetParamsSecurityName - while 1: + while True: try: nextMibNode = snmpTargetParamsSecurityName.getNextNode(nextMibNode.name) @@ -49,10 +49,18 @@ class SnmpV1SecurityModel(base.AbstractSecurityModel): mibNode = snmpTargetParamsSecurityModel.getNode(snmpTargetParamsSecurityModel.name + instId) - if mibNode.syntax not in self.__nameToModelMap: - self.__nameToModelMap[nextMibNode.syntax] = set() + try: + if mibNode.syntax not in self.__nameToModelMap: + self.__nameToModelMap[nextMibNode.syntax] = set() + + self.__nameToModelMap[nextMibNode.syntax].add(mibNode.syntax) - self.__nameToModelMap[nextMibNode.syntax].add(mibNode.syntax) + except PyAsn1Error: + debug.logger & debug.flagSM and debug.logger( + '_sec2com: table entries %r/%r hashing failed' % ( + nextMibNode.syntax, mibNode.syntax) + ) + continue self.__paramsBranchId = snmpTargetParamsSecurityName.branchVersionId @@ -72,7 +80,8 @@ class SnmpV1SecurityModel(base.AbstractSecurityModel): self.__securityMap = {} nextMibNode = snmpCommunityName - while 1: + + while True: try: nextMibNode = snmpCommunityName.getNextNode(nextMibNode.name) @@ -88,9 +97,17 @@ class SnmpV1SecurityModel(base.AbstractSecurityModel): _contextName = snmpCommunityContextName.getNode(snmpCommunityContextName.name + instId).syntax - self.__securityMap[(_securityName, - _contextEngineId, - _contextName)] = nextMibNode.syntax + try: + self.__securityMap[(_securityName, + _contextEngineId, + _contextName)] = nextMibNode.syntax + + except PyAsn1Error: + debug.logger & debug.flagSM and debug.logger( + '_sec2com: table entries %r/%r/%r hashing failed' % ( + _securityName, _contextEngineId, _contextName) + ) + continue self.__securityBranchId = snmpCommunityName.branchVersionId @@ -123,11 +140,14 @@ class SnmpV1SecurityModel(base.AbstractSecurityModel): self.__transportToTagMap = {} nextMibNode = snmpTargetAddrTagList + while True: try: nextMibNode = snmpTargetAddrTagList.getNextNode(nextMibNode.name) + except NoSuchInstanceError: break + instId = nextMibNode.name[len(snmpTargetAddrTagList.name):] targetAddrTDomain = snmpTargetAddrTDomain.getNode(snmpTargetAddrTDomain.name + instId).syntax targetAddrTAddress = snmpTargetAddrTAddress.getNode(snmpTargetAddrTAddress.name + instId).syntax @@ -144,17 +164,29 @@ class SnmpV1SecurityModel(base.AbstractSecurityModel): targetAddrTAddress = tuple(TransportAddressIPv6(targetAddrTAddress)) elif targetAddrTDomain[:len(unix.snmpLocalDomain)] == unix.snmpLocalDomain: targetAddrTAddress = str(targetAddrTAddress) + targetAddr = targetAddrTDomain, targetAddrTAddress targetAddrTagList = snmpTargetAddrTagList.getNode(snmpTargetAddrTagList.name + instId).syntax + if targetAddr not in self.__transportToTagMap: self.__transportToTagMap[targetAddr] = set() - if targetAddrTagList: - self.__transportToTagMap[targetAddr].update( - [SnmpTagValue(x) - for x in targetAddrTagList.asOctets().split()] + + try: + if targetAddrTagList: + self.__transportToTagMap[targetAddr].update( + [SnmpTagValue(x) + for x in targetAddrTagList.asOctets().split()] + ) + + else: + self.__transportToTagMap[targetAddr].add(self.__emptyTag) + + except PyAsn1Error: + debug.logger & debug.flagSM and debug.logger( + '_com2sec: table entries %r/%r hashing failed' % ( + targetAddr, targetAddrTagList) ) - else: - self.__transportToTagMap[targetAddr].add(self.__emptyTag) + continue self.__transportBranchId = snmpTargetAddrTAddress.branchVersionId @@ -163,6 +195,7 @@ class SnmpV1SecurityModel(base.AbstractSecurityModel): snmpTargetParamsSecurityName, = snmpEngine.msgAndPduDsp.mibInstrumController.mibBuilder.importSymbols( 'SNMP-TARGET-MIB', 'snmpTargetParamsSecurityName') + if self.__paramsBranchId != snmpTargetParamsSecurityName.branchVersionId: snmpTargetParamsSecurityModel, = snmpEngine.msgAndPduDsp.mibInstrumController.mibBuilder.importSymbols( 'SNMP-TARGET-MIB', 'snmpTargetParamsSecurityModel') @@ -182,10 +215,18 @@ class SnmpV1SecurityModel(base.AbstractSecurityModel): mibNode = snmpTargetParamsSecurityModel.getNode(snmpTargetParamsSecurityModel.name + instId) - if nextMibNode.syntax not in self.__nameToModelMap: - self.__nameToModelMap[nextMibNode.syntax] = set() + try: + if nextMibNode.syntax not in self.__nameToModelMap: + self.__nameToModelMap[nextMibNode.syntax] = set() + + self.__nameToModelMap[nextMibNode.syntax].add(mibNode.syntax) - self.__nameToModelMap[nextMibNode.syntax].add(mibNode.syntax) + except PyAsn1Error: + debug.logger & debug.flagSM and debug.logger( + '_com2sec: table entries %r/%r hashing failed' % ( + nextMibNode.syntax, mibNode.syntax) + ) + continue self.__paramsBranchId = snmpTargetParamsSecurityName.branchVersionId @@ -211,6 +252,7 @@ class SnmpV1SecurityModel(base.AbstractSecurityModel): self.__tagAndCommunityToSecurityMap = {} nextMibNode = snmpCommunityName + while True: try: nextMibNode = snmpCommunityName.getNextNode(nextMibNode.name) @@ -231,17 +273,25 @@ class SnmpV1SecurityModel(base.AbstractSecurityModel): _tagAndCommunity = transportTag, nextMibNode.syntax - if _tagAndCommunity not in self.__tagAndCommunityToSecurityMap: - self.__tagAndCommunityToSecurityMap[_tagAndCommunity] = set() + try: + if _tagAndCommunity not in self.__tagAndCommunityToSecurityMap: + self.__tagAndCommunityToSecurityMap[_tagAndCommunity] = set() - self.__tagAndCommunityToSecurityMap[_tagAndCommunity].add( - (securityName, contextEngineId, contextName) - ) + self.__tagAndCommunityToSecurityMap[_tagAndCommunity].add( + (securityName, contextEngineId, contextName) + ) + + if nextMibNode.syntax not in self.__communityToTagMap: + self.__communityToTagMap[nextMibNode.syntax] = set() - if nextMibNode.syntax not in self.__communityToTagMap: - self.__communityToTagMap[nextMibNode.syntax] = set() + self.__communityToTagMap[nextMibNode.syntax].add(transportTag) - self.__communityToTagMap[nextMibNode.syntax].add(transportTag) + except PyAsn1Error: + debug.logger & debug.flagSM and debug.logger( + '_com2sec: table entries %r/%r hashing failed' % ( + _tagAndCommunity, nextMibNode.syntax) + ) + continue self.__communityBranchId = snmpCommunityName.branchVersionId |