diff options
Diffstat (limited to 'pysnmp/proto/acmod/rfc3415.py')
| -rw-r--r-- | pysnmp/proto/acmod/rfc3415.py | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/pysnmp/proto/acmod/rfc3415.py b/pysnmp/proto/acmod/rfc3415.py index 917dc5d7..3c6be611 100644 --- a/pysnmp/proto/acmod/rfc3415.py +++ b/pysnmp/proto/acmod/rfc3415.py @@ -10,10 +10,12 @@ from pysnmp import debug __powOfTwoSeq = [128, 64, 32, 16, 8, 4, 2, 1] + # 3.2 class Vacm: """View-based Access Control Model""" accessModelID = 3 + def isAccessAllowed(self, snmpEngine, securityModel, @@ -24,7 +26,9 @@ class Vacm: variableName): mibInstrumController = snmpEngine.msgAndPduDsp.mibInstrumController - debug.logger & debug.flagACL and debug.logger('isAccessAllowed: securityModel %s, securityName %s, securityLevel %s, viewType %s, contextName %s for variableName %s' % (securityModel, securityName, securityLevel, viewType, contextName, variableName)) + debug.logger & debug.flagACL and debug.logger( + 'isAccessAllowed: securityModel %s, securityName %s, securityLevel %s, viewType %s, contextName %s for variableName %s' % ( + securityModel, securityName, securityLevel, viewType, contextName, variableName)) # 3.2.1 vacmContextEntry, = mibInstrumController.mibBuilder.importSymbols('SNMP-VIEW-BASED-ACM-MIB', 'vacmContextEntry') @@ -37,7 +41,8 @@ class Vacm: raise error.StatusInformation(errorIndication=errind.noSuchContext) # 3.2.2 - vacmSecurityToGroupEntry, = mibInstrumController.mibBuilder.importSymbols('SNMP-VIEW-BASED-ACM-MIB', 'vacmSecurityToGroupEntry') + vacmSecurityToGroupEntry, = mibInstrumController.mibBuilder.importSymbols('SNMP-VIEW-BASED-ACM-MIB', + 'vacmSecurityToGroupEntry') tblIdx = vacmSecurityToGroupEntry.getInstIdFromIndices( securityModel, securityName ) @@ -77,7 +82,8 @@ class Vacm: # XXX split onto object & instance ? # 3.2.5a - vacmViewTreeFamilyEntry, = mibInstrumController.mibBuilder.importSymbols('SNMP-VIEW-BASED-ACM-MIB', 'vacmViewTreeFamilyEntry') + vacmViewTreeFamilyEntry, = mibInstrumController.mibBuilder.importSymbols('SNMP-VIEW-BASED-ACM-MIB', + 'vacmViewTreeFamilyEntry') tblIdx = vacmViewTreeFamilyEntry.getInstIdFromIndices(viewName) # Walk over entries @@ -101,18 +107,18 @@ class Vacm: if vacmViewTreeFamilyMask.syntax: mask = [] for c in vacmViewTreeFamilyMask.syntax.asNumbers(): - mask = mask + [b&c for b in __powOfTwoSeq] - m = len(mask)-1 - idx = l-1 + mask = mask + [b & c for b in __powOfTwoSeq] + m = len(mask) - 1 + idx = l - 1 while idx: if idx > m or mask[idx] and \ - vacmViewTreeFamilySubtree.syntax[idx] != variableName[idx]: + vacmViewTreeFamilySubtree.syntax[idx] != variableName[idx]: break - idx = idx - 1 + idx -= 1 if idx: - continue # no match - else: # no mask + continue # no match + else: # no mask if vacmViewTreeFamilySubtree.syntax != variableName[:l]: - continue # no match + continue # no match # 3.2.5c return error.StatusInformation(errorIndication=errind.accessAllowed) |