xmltooling/security/impl/ChainingTrustEngine.cpp

   1 /*
   2  *  Copyright 2001-2010 Internet2
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 /**
  18  * ChainingTrustEngine.cpp
  19  *
  20  * OpenSSLTrustEngine that uses multiple engines in sequence.
  21  */
  22
  23 #include "internal.h"
  24 #include "exceptions.h"
  25 #include "logging.h"
  26 #include "security/ChainingTrustEngine.h"
  27 #include "util/XMLHelper.h"
  28
  29 #include <algorithm>
  30 #include <xercesc/util/XMLUniDefs.hpp>
  31
  32 using namespace xmlsignature;
  33 using namespace xmltooling::logging;
  34 using namespace xmltooling;
  35 using namespace std;
  36
  37 using xercesc::DOMElement;
  38
  39 namespace xmltooling {
  40     TrustEngine* XMLTOOL_DLLLOCAL ChainingTrustEngineFactory(const DOMElement* const & e)
  41     {
  42         return new ChainingTrustEngine(e);
  43     }
  44 };
  45
  46 static const XMLCh _TrustEngine[] =                 UNICODE_LITERAL_11(T,r,u,s,t,E,n,g,i,n,e);
  47 static const XMLCh type[] =                         UNICODE_LITERAL_4(t,y,p,e);
  48
  49 ChainingTrustEngine::ChainingTrustEngine(const DOMElement* e) : TrustEngine(e) {
  50     Category& log=Category::getInstance(XMLTOOLING_LOGCAT".TrustEngine."CHAINING_TRUSTENGINE);
  51     e = e ? XMLHelper::getFirstChildElement(e, _TrustEngine) : nullptr;
  52     while (e) {
  53         try {
  54             string t = XMLHelper::getAttrString(e, nullptr, type);
  55             if (!t.empty()) {
  56                 log.info("building TrustEngine of type %s", t.c_str());
  57                 addTrustEngine(XMLToolingConfig::getConfig().TrustEngineManager.newPlugin(t.c_str(), e));
  58             }
  59         }
  60         catch (exception& ex) {
  61             log.error("error building TrustEngine: %s", ex.what());
  62         }
  63         e = XMLHelper::getNextSiblingElement(e, _TrustEngine);
  64     }
  65 }
  66
  67 ChainingTrustEngine::~ChainingTrustEngine() {
  68     for_each(m_engines.begin(), m_engines.end(), xmltooling::cleanup<TrustEngine>());
  69 }
  70
  71 void ChainingTrustEngine::addTrustEngine(TrustEngine* newEngine)
  72 {
  73     m_engines.push_back(newEngine);
  74     SignatureTrustEngine* sig = dynamic_cast<SignatureTrustEngine*>(newEngine);
  75     if (sig)
  76         m_sigEngines.push_back(sig);
  77     X509TrustEngine* x509 = dynamic_cast<X509TrustEngine*>(newEngine);
  78     if (x509)
  79         m_x509Engines.push_back(x509);
  80     OpenSSLTrustEngine* ossl = dynamic_cast<OpenSSLTrustEngine*>(newEngine);
  81     if (ossl)
  82         m_osslEngines.push_back(ossl);
  83 }
  84
  85 TrustEngine* ChainingTrustEngine::removeTrustEngine(TrustEngine* oldEngine)
  86 {
  87     vector<TrustEngine*>::iterator i = find(m_engines.begin(), m_engines.end(), oldEngine);
  88     if (i != m_engines.end()) {
  89         m_engines.erase(i);
  90
  91         SignatureTrustEngine* sig = dynamic_cast<SignatureTrustEngine*>(oldEngine);
  92         if (sig) {
  93             vector<SignatureTrustEngine*>::iterator s = find(m_sigEngines.begin(), m_sigEngines.end(), sig);
  94             if (s != m_sigEngines.end())
  95                 m_sigEngines.erase(s);
  96         }
  97
  98         X509TrustEngine* x509 = dynamic_cast<X509TrustEngine*>(oldEngine);
  99         if (x509) {
 100             vector<X509TrustEngine*>::iterator x = find(m_x509Engines.begin(), m_x509Engines.end(), x509);
 101             if (x != m_x509Engines.end())
 102                 m_x509Engines.erase(x);
 103         }
 104
 105         OpenSSLTrustEngine* ossl = dynamic_cast<OpenSSLTrustEngine*>(oldEngine);
 106         if (ossl) {
 107             vector<OpenSSLTrustEngine*>::iterator o = find(m_osslEngines.begin(), m_osslEngines.end(), ossl);
 108             if (o != m_osslEngines.end())
 109                 m_osslEngines.erase(o);
 110         }
 111
 112         return oldEngine;
 113     }
 114     return nullptr;
 115 }
 116
 117 bool ChainingTrustEngine::validate(Signature& sig, const CredentialResolver& credResolver, CredentialCriteria* criteria) const
 118 {
 119     for (vector<SignatureTrustEngine*>::const_iterator i=m_sigEngines.begin(); i!=m_sigEngines.end(); ++i) {
 120         if ((*i)->validate(sig,credResolver,criteria))
 121             return true;
 122     }
 123     return false;
 124 }
 125
 126 bool ChainingTrustEngine::validate(
 127     const XMLCh* sigAlgorithm,
 128     const char* sig,
 129     KeyInfo* keyInfo,
 130     const char* in,
 131     unsigned int in_len,
 132     const CredentialResolver& credResolver,
 133     CredentialCriteria* criteria
 134     ) const
 135 {
 136     for (vector<SignatureTrustEngine*>::const_iterator i=m_sigEngines.begin(); i!=m_sigEngines.end(); ++i) {
 137         if ((*i)->validate(sigAlgorithm, sig, keyInfo, in, in_len, credResolver, criteria))
 138             return true;
 139     }
 140     return false;
 141 }
 142
 143 bool ChainingTrustEngine::validate(
 144     XSECCryptoX509* certEE,
 145     const vector<XSECCryptoX509*>& certChain,
 146     const CredentialResolver& credResolver,
 147     CredentialCriteria* criteria
 148     ) const
 149 {
 150     for (vector<X509TrustEngine*>::const_iterator i=m_x509Engines.begin(); i!=m_x509Engines.end(); ++i) {
 151         if ((*i)->validate(certEE,certChain,credResolver,criteria))
 152             return true;
 153     }
 154     return false;
 155 }
 156
 157 bool ChainingTrustEngine::validate(
 158     X509* certEE,
 159     STACK_OF(X509)* certChain,
 160     const CredentialResolver& credResolver,
 161     CredentialCriteria* criteria
 162     ) const
 163 {
 164     for (vector<OpenSSLTrustEngine*>::const_iterator i=m_osslEngines.begin(); i!=m_osslEngines.end(); ++i) {
 165         if ((*i)->validate(certEE,certChain,credResolver,criteria))
 166             return true;
 167     }
 168     return false;
 169 }