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/*
*
* Copyright (c) 2006 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include "qpid/acl/AclData.h"
#include "qpid/log/Statement.h"
#include "qpid/sys/IntegerTypes.h"
#include <boost/lexical_cast.hpp>
namespace qpid {
namespace acl {
AclData::AclData():decisionMode(qpid::acl::DENY),transferAcl(false),aclSource("UNKNOWN")
{
for (unsigned int cnt=0; cnt< qpid::acl::ACTIONSIZE; cnt++){
actionList[cnt]=0;
}
}
void AclData::clear ()
{
for (unsigned int cnt=0; cnt< qpid::acl::ACTIONSIZE; cnt++){
if (actionList[cnt]){
for (unsigned int cnt1=0; cnt1< qpid::acl::OBJECTSIZE; cnt1++)
delete actionList[cnt][cnt1];
}
delete[] actionList[cnt];
}
}
bool AclData::matchProp(const std::string & src, const std::string& src1)
{
// allow wildcard on the end of strings...
if (src.data()[src.size()-1]=='*') {
return (src.compare(0, src.size()-1, src1, 0,src.size()-1 ) == 0);
} else {
return (src.compare(src1)==0) ;
}
}
AclResult AclData::lookup(
const std::string& id,
const Action& action,
const ObjectType& objType,
const std::string& name,
std::map<Property, std::string>* params) {
QPID_LOG(debug, "ACL: Lookup for id:" << id
<< " action:" << AclHelper::getActionStr((Action) action)
<< " objectType:" << AclHelper::getObjectTypeStr((ObjectType) objType)
<< " name:" << name
<< " with params " << AclHelper::propertyMapToString(params));
// A typical log looks like:
// ACL: Lookup for id:bob@QPID action:create objectType:queue name:q2 with params { durable=false
// passive=false autodelete=false exclusive=false alternate= policytype= maxqueuesize=0 maxqueuecount=0 }
// Default result is blanket decision mode for the entire ACL list.
AclResult aclresult = decisionMode;
// Test for lists of rules at the intersection of the Action and the Object
if (actionList[action] && actionList[action][objType])
{
// Find the list of rules for this actorId
AclData::actObjItr itrRule = actionList[action][objType]->find(id);
// If individual actorId not found then find a rule set for '*'.
if (itrRule == actionList[action][objType]->end())
itrRule = actionList[action][objType]->find("*");
if (itrRule != actionList[action][objType]->end())
{
// A list of rules exists for this actor/action/object tuple.
// Iterate the rule set to search for a matching rule.
ruleSetItr rsItr = itrRule->second.end();
for (int cnt = itrRule->second.size(); cnt != 0; cnt--)
{
rsItr--;
QPID_LOG(debug, "ACL: checking rule " << rsItr->toString());
bool match = true;
bool limitChecked = true;
// Iterate this rule's properties
for (propertyMapItr rulePropMapItr = rsItr->props.begin();
(rulePropMapItr != rsItr->props.end()) && match;
rulePropMapItr++)
{
// The property map's NAME property is handled specially
if (rulePropMapItr->first == acl::PROP_NAME)
{
if (matchProp(rulePropMapItr->second, name))
{
QPID_LOG(debug, "ACL: lookup name '" << name
<< "' matched with rule name '" << rulePropMapItr->second << "'");
}
else
{
match = false;
QPID_LOG(debug, "ACL: lookup name '" << name
<< "' didn't match with rule name '" << rulePropMapItr->second << "'");
}
}
else
{
if (params)
{
// The rule's property map non-NAME properties are
// to be found in the lookup's params list
propertyMapItr lookupParamItr = params->find(rulePropMapItr->first);
if (lookupParamItr == params->end())
{
// Now the rule has a specified property that does not exist
// in the caller's lookup params list. This rule does not match.
match = false;
QPID_LOG(debug, "ACL: lookup parameter map doesn't contain the rule property '"
<< AclHelper::getPropertyStr(rulePropMapItr->first) << "'");
}
else
{
if ( rulePropMapItr->first == acl::PROP_QUEUEMAXCOUNT || rulePropMapItr->first == acl::PROP_QUEUEMAXSIZE )
{
assert ( rulePropMapItr->first == lookupParamItr->first );
limitChecked &= compareIntMax(rulePropMapItr->first,
boost::lexical_cast<std::string>(rulePropMapItr->second),
boost::lexical_cast<std::string>(lookupParamItr->second));
}
else
{
if (matchProp(rulePropMapItr->second, lookupParamItr->second))
{
QPID_LOG(debug, "ACL: the pair("
<< AclHelper::getPropertyStr(lookupParamItr->first) << "," << lookupParamItr->second
<< ") given in lookup matched the pair("
<< AclHelper::getPropertyStr(rulePropMapItr->first) << "," << rulePropMapItr->second
<< ") given in the rule");
}
else
{
match = false;
QPID_LOG(debug, "ACL: the pair("
<< AclHelper::getPropertyStr(lookupParamItr->first) << "," << lookupParamItr->second
<< ") given in lookup doesn't match the pair("
<< AclHelper::getPropertyStr(rulePropMapItr->first) << "," << rulePropMapItr->second
<< ") given in the rule");
}
}
}
}
else
{
// params don't exist.
}
}
}
if (match)
{
aclresult = rsItr->ruleMode;
if (!limitChecked)
{
// Now a lookup matched all rule properties but one of the numeric
// limits has failed. This has the effect of demoting an allow to a deny.
if (aclresult == acl::ALLOW)
{
aclresult = acl::DENY;
}
else
{
if (aclresult == acl::ALLOWLOG)
{
aclresult = acl::DENYLOG;
}
}
}
QPID_LOG(debug,"ACL: Successful match, the decision is:" << AclHelper::getAclResultStr(aclresult));
return aclresult;
}
else
{
// this rule did not match the requested lookup
}
}
}
else
{
// The Action-Object list has entries but not for this actorId nor for *.
}
}
else
{
// The Action-Object list has no entries
}
QPID_LOG(debug,"ACL: No successful match, defaulting to the decision mode " << AclHelper::getAclResultStr(aclresult));
return aclresult;
}
AclResult AclData::lookup(const std::string& id, const Action& action, const ObjectType& objType,
const std::string& /*Exchange*/ name, const std::string& RoutingKey)
{
QPID_LOG(debug, "ACL: Lookup for id:" << id << " action:" << AclHelper::getActionStr((Action) action)
<< " objectType:" << AclHelper::getObjectTypeStr((ObjectType) objType) << " exchange name:" << name
<< " with routing key " << RoutingKey);
AclResult aclresult = decisionMode;
if (actionList[action] && actionList[action][objType]){
AclData::actObjItr itrRule = actionList[action][objType]->find(id);
if (itrRule == actionList[action][objType]->end())
itrRule = actionList[action][objType]->find("*");
if (itrRule != actionList[action][objType]->end() ) {
//loop the vector
ruleSetItr rsItr = itrRule->second.end();
for (int cnt = itrRule->second.size(); cnt != 0; cnt--) {
rsItr--;
// loop the names looking for match
bool match =true;
for (propertyMapItr pMItr = rsItr->props.begin(); (pMItr != rsItr->props.end()) && match; pMItr++)
{
//match name is exists first
if (pMItr->first == acl::PROP_NAME){
if (matchProp(pMItr->second, name)){
QPID_LOG(debug, "ACL: lookup exchange name '" << name << "' matched with rule name '"
<< pMItr->second << "'");
}else{
match= false;
QPID_LOG(debug, "ACL: lookup exchange name '" << name << "' didn't match with rule name '"
<< pMItr->second << "'");
}
}else if (pMItr->first == acl::PROP_ROUTINGKEY){
if (matchProp(pMItr->second, RoutingKey)){
QPID_LOG(debug, "ACL: lookup key name '" << name << "' matched with rule routing key '"
<< pMItr->second << "'");
}else{
match= false;
QPID_LOG(debug, "ACL: lookup key name '" << name << "' didn't match with routing key '"
<< pMItr->second << "'");
}
}
}
if (match){
aclresult = rsItr->ruleMode;
QPID_LOG(debug,"ACL: Successful match, the decision is:" << AclHelper::getAclResultStr(aclresult));
return aclresult;
}
}
}
}
QPID_LOG(debug,"ACL: No successful match, defaulting to the decision mode " << AclHelper::getAclResultStr(aclresult));
return aclresult;
}
AclData::~AclData()
{
clear();
}
bool AclData::compareIntMax(const qpid::acl::Property theProperty,
const std::string theAclValue,
const std::string theLookupValue) {
uint64_t aclMax (0);
uint64_t paramMax (0);
try {
aclMax = boost::lexical_cast<uint64_t>(theAclValue);
} catch(const boost::bad_lexical_cast&) {
assert (false);
return false;
}
try {
paramMax = boost::lexical_cast<uint64_t>(theLookupValue);
} catch(const boost::bad_lexical_cast&) {
QPID_LOG(error,"ACL: Error evaluating rule. " <<
"Illegal value given in lookup for property '" <<
AclHelper::getPropertyStr(theProperty) << "' : " <<
theLookupValue);
return false;
}
QPID_LOG(debug, "ACL: Numeric comparison for property " <<
AclHelper::getPropertyStr(theProperty) <<
" (value given in lookup = " <<
theLookupValue <<
", value give in rule = " <<
theAclValue << " )");
if (( aclMax ) && ( paramMax == 0 || paramMax > aclMax)){
QPID_LOG(debug, "ACL: Max limit exceeded for property '"
<< AclHelper::getPropertyStr(theProperty) << "'");
return false;
}
return true;
}
}}
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