xmltooling/XMLToolingConfig.cpp

   1 /*
   2  *  Copyright 2001-2006 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  * XMLToolingConfig.cpp
  19  *
  20  * Library configuration
  21  */
  22
  23 #include "internal.h"
  24 #include "exceptions.h"
  25 #include "XMLToolingConfig.h"
  26 #include "encryption/Encryption.h"
  27 #include "impl/UnknownElement.h"
  28 #include "security/TrustEngine.h"
  29 #include "security/OpenSSLCryptoX509CRL.h"
  30 #include "signature/CredentialResolver.h"
  31 #include "soap/SOAP.h"
  32 #include "util/NDC.h"
  33 #include "util/XMLConstants.h"
  34 #include "validation/Validator.h"
  35
  36 #ifdef HAVE_DLFCN_H
  37 # include <dlfcn.h>
  38 #endif
  39
  40 #include <stdexcept>
  41 #include <log4cpp/Category.hh>
  42 #include <log4cpp/PropertyConfigurator.hh>
  43 #include <log4cpp/OstreamAppender.hh>
  44 #include <xercesc/util/PlatformUtils.hpp>
  45 #ifndef XMLTOOLING_NO_XMLSEC
  46     #include <xsec/framework/XSECProvider.hpp>
  47     #include <openssl/err.h>
  48 #endif
  49
  50 using namespace soap11;
  51 using namespace xmlencryption;
  52 using namespace xmlsignature;
  53 using namespace xmltooling;
  54 using namespace log4cpp;
  55 using namespace std;
  56
  57 DECL_EXCEPTION_FACTORY(XMLParserException,xmltooling);
  58 DECL_EXCEPTION_FACTORY(XMLObjectException,xmltooling);
  59 DECL_EXCEPTION_FACTORY(MarshallingException,xmltooling);
  60 DECL_EXCEPTION_FACTORY(UnmarshallingException,xmltooling);
  61 DECL_EXCEPTION_FACTORY(UnknownElementException,xmltooling);
  62 DECL_EXCEPTION_FACTORY(UnknownAttributeException,xmltooling);
  63 DECL_EXCEPTION_FACTORY(UnknownExtensionException,xmltooling);
  64 DECL_EXCEPTION_FACTORY(ValidationException,xmltooling);
  65
  66 #ifndef XMLTOOLING_NO_XMLSEC
  67     DECL_EXCEPTION_FACTORY(SignatureException,xmlsignature);
  68 #endif
  69
  70 namespace xmltooling {
  71    XMLToolingInternalConfig g_config;
  72 }
  73
  74 XMLToolingConfig& XMLToolingConfig::getConfig()
  75 {
  76     return g_config;
  77 }
  78
  79 XMLToolingInternalConfig& XMLToolingInternalConfig::getInternalConfig()
  80 {
  81     return g_config;
  82 }
  83
  84 bool XMLToolingInternalConfig::log_config(const char* config)
  85 {
  86     try {
  87         if (!config || !*config)
  88             config=getenv("XMLTOOLING_LOG_CONFIG");
  89         if (!config || !*config)
  90             config="WARN";
  91
  92         bool level=false;
  93         Category& root = Category::getRoot();
  94         if (!strcmp(config,"DEBUG")) {
  95             root.setPriority(Priority::DEBUG);
  96             level=true;
  97         }
  98         else if (!strcmp(config,"INFO")) {
  99             root.setPriority(Priority::INFO);
 100             level=true;
 101         }
 102         else if (!strcmp(config,"NOTICE")) {
 103             root.setPriority(Priority::NOTICE);
 104             level=true;
 105         }
 106         else if (!strcmp(config,"WARN")) {
 107             root.setPriority(Priority::WARN);
 108             level=true;
 109         }
 110         else if (!strcmp(config,"ERROR")) {
 111             root.setPriority(Priority::ERROR);
 112             level=true;
 113         }
 114         else if (!strcmp(config,"CRIT")) {
 115             root.setPriority(Priority::CRIT);
 116             level=true;
 117         }
 118         else if (!strcmp(config,"ALERT")) {
 119             root.setPriority(Priority::ALERT);
 120             level=true;
 121         }
 122         else if (!strcmp(config,"EMERG")) {
 123             root.setPriority(Priority::EMERG);
 124             level=true;
 125         }
 126         else if (!strcmp(config,"FATAL")) {
 127             root.setPriority(Priority::FATAL);
 128             level=true;
 129         }
 130         if (level)
 131             root.setAppender(new OstreamAppender("default",&cerr));
 132         else
 133             PropertyConfigurator::configure(config);
 134     }
 135     catch (const ConfigureFailure& e) {
 136         Category::getInstance(XMLTOOLING_LOGCAT".Logging").crit("failed to initialize log4cpp: %s", e.what());
 137         return false;
 138     }
 139
 140     return true;
 141 }
 142
 143 bool XMLToolingInternalConfig::init()
 144 {
 145 #ifdef _DEBUG
 146     xmltooling::NDC ndc("init");
 147 #endif
 148     Category& log=Category::getInstance(XMLTOOLING_LOGCAT".XMLToolingConfig");
 149     try {
 150         log.debug("library initialization started");
 151
 152         xercesc::XMLPlatformUtils::Initialize();
 153         log.debug("Xerces initialization complete");
 154
 155 #ifndef XMLTOOLING_NO_XMLSEC
 156         XSECPlatformUtils::Initialise();
 157         m_xsecProvider=new XSECProvider();
 158         log.debug("XMLSec initialization complete");
 159 #endif
 160
 161         m_parserPool=new ParserPool();
 162         m_validatingPool=new ParserPool(true,true);
 163         m_lock=xercesc::XMLPlatformUtils::makeMutex();
 164
 165         // default registrations
 166         XMLObjectBuilder::registerDefaultBuilder(new UnknownElementBuilder());
 167
 168         registerKeyInfoClasses();
 169         registerEncryptionClasses();
 170         registerSOAPClasses();
 171
 172         REGISTER_EXCEPTION_FACTORY(XMLParserException,xmltooling);
 173         REGISTER_EXCEPTION_FACTORY(XMLObjectException,xmltooling);
 174         REGISTER_EXCEPTION_FACTORY(MarshallingException,xmltooling);
 175         REGISTER_EXCEPTION_FACTORY(UnmarshallingException,xmltooling);
 176         REGISTER_EXCEPTION_FACTORY(UnknownElementException,xmltooling);
 177         REGISTER_EXCEPTION_FACTORY(UnknownAttributeException,xmltooling);
 178         REGISTER_EXCEPTION_FACTORY(ValidationException,xmltooling);
 179
 180 #ifndef XMLTOOLING_NO_XMLSEC
 181         XMLObjectBuilder::registerBuilder(QName(XMLConstants::XMLSIG_NS,Signature::LOCAL_NAME),new SignatureBuilder());
 182         REGISTER_EXCEPTION_FACTORY(SignatureException,xmlsignature);
 183         registerKeyResolvers();
 184         registerCredentialResolvers();
 185         registerTrustEngines();
 186 #endif
 187     }
 188     catch (const xercesc::XMLException&) {
 189         log.fatal("caught exception while initializing Xerces");
 190         return false;
 191     }
 192
 193     log.info("library initialization complete");
 194     return true;
 195 }
 196
 197 void XMLToolingInternalConfig::term()
 198 {
 199     XMLObjectBuilder::destroyBuilders();
 200     KeyInfoSchemaValidators.destroyValidators();
 201     EncryptionSchemaValidators.destroyValidators();
 202     XMLToolingException::deregisterFactories();
 203
 204 #ifndef XMLTOOLING_NO_XMLSEC
 205     TrustEngineManager.deregisterFactories();
 206     CredentialResolverManager.deregisterFactories();
 207     KeyResolverManager.deregisterFactories();
 208 #endif
 209
 210     for (vector<void*>::reverse_iterator i=m_libhandles.rbegin(); i!=m_libhandles.rend(); i++) {
 211 #if defined(WIN32)
 212         FARPROC fn=GetProcAddress(static_cast<HMODULE>(*i),"xmltooling_extension_term");
 213         if (fn)
 214             fn();
 215         FreeLibrary(static_cast<HMODULE>(*i));
 216 #elif defined(HAVE_DLFCN_H)
 217         void (*fn)()=(void (*)())dlsym(*i,"xmltooling_extension_term");
 218         if (fn)
 219             fn();
 220         dlclose(*i);
 221 #else
 222 # error "Don't know about dynamic loading on this platform!"
 223 #endif
 224     }
 225     m_libhandles.clear();
 226
 227     delete m_parserPool;
 228     m_parserPool=NULL;
 229     delete m_validatingPool;
 230     m_validatingPool=NULL;
 231
 232 #ifndef XMLTOOLING_NO_XMLSEC
 233     delete m_xsecProvider;
 234     m_xsecProvider=NULL;
 235     XSECPlatformUtils::Terminate();
 236 #endif
 237
 238     xercesc::XMLPlatformUtils::closeMutex(m_lock);
 239     m_lock=NULL;
 240     xercesc::XMLPlatformUtils::Terminate();
 241
 242  #ifdef _DEBUG
 243     xmltooling::NDC ndc("term");
 244 #endif
 245    Category::getInstance(XMLTOOLING_LOGCAT".XMLToolingConfig").info("library shutdown complete");
 246 }
 247
 248 Lockable* XMLToolingInternalConfig::lock()
 249 {
 250     xercesc::XMLPlatformUtils::lockMutex(m_lock);
 251     return this;
 252 }
 253
 254 void XMLToolingInternalConfig::unlock()
 255 {
 256     xercesc::XMLPlatformUtils::unlockMutex(m_lock);
 257 }
 258
 259 bool XMLToolingInternalConfig::load_library(const char* path, void* context)
 260 {
 261 #ifdef _DEBUG
 262     xmltooling::NDC ndc("LoadLibrary");
 263 #endif
 264     Category& log=Category::getInstance(XMLTOOLING_LOGCAT".XMLToolingConfig");
 265     log.info("loading extension: %s", path);
 266
 267     Locker locker(this);
 268
 269 #if defined(WIN32)
 270     HMODULE handle=NULL;
 271     char* fixed=const_cast<char*>(path);
 272     if (strchr(fixed,'/')) {
 273         fixed=strdup(path);
 274         char* p=fixed;
 275         while (p=strchr(p,'/'))
 276             *p='\\';
 277     }
 278
 279     UINT em=SetErrorMode(SEM_FAILCRITICALERRORS);
 280     try {
 281         handle=LoadLibraryEx(fixed,NULL,LOAD_WITH_ALTERED_SEARCH_PATH);
 282         if (!handle)
 283              handle=LoadLibraryEx(fixed,NULL,0);
 284         if (!handle)
 285             throw runtime_error(string("unable to load extension library: ") + fixed);
 286         FARPROC fn=GetProcAddress(handle,"xmltooling_extension_init");
 287         if (!fn)
 288             throw runtime_error(string("unable to locate xmltooling_extension_init entry point: ") + fixed);
 289         if (reinterpret_cast<int(*)(void*)>(fn)(context)!=0)
 290             throw runtime_error(string("detected error in xmltooling_extension_init: ") + fixed);
 291         if (fixed!=path)
 292             free(fixed);
 293         SetErrorMode(em);
 294     }
 295     catch(runtime_error& e) {
 296         log.error(e.what());
 297         if (handle)
 298             FreeLibrary(handle);
 299         SetErrorMode(em);
 300         if (fixed!=path)
 301             free(fixed);
 302         return false;
 303     }
 304
 305 #elif defined(HAVE_DLFCN_H)
 306     void* handle=dlopen(path,RTLD_LAZY);
 307     if (!handle)
 308         throw runtime_error(string("unable to load extension library '") + path + "': " + dlerror());
 309     int (*fn)(void*)=(int (*)(void*))(dlsym(handle,"xmltooling_extension_init"));
 310     if (!fn) {
 311         dlclose(handle);
 312         throw runtime_error(
 313             string("unable to locate xmltooling_extension_init entry point in '") + path + "': " +
 314                 (dlerror() ? dlerror() : "unknown error")
 315             );
 316     }
 317     try {
 318         if (fn(context)!=0)
 319             throw runtime_error(string("detected error in xmltooling_extension_init in ") + path);
 320     }
 321     catch(runtime_error& e) {
 322         log.error(e.what());
 323         if (handle)
 324             dlclose(handle);
 325         return false;
 326     }
 327 #else
 328 # error "Don't know about dynamic loading on this platform!"
 329 #endif
 330     m_libhandles.push_back(handle);
 331     log.info("loaded extension: %s", path);
 332     return true;
 333 }
 334
 335 #ifndef XMLTOOLING_NO_XMLSEC
 336 void xmltooling::log_openssl()
 337 {
 338     const char* file;
 339     const char* data;
 340     int flags,line;
 341
 342     unsigned long code=ERR_get_error_line_data(&file,&line,&data,&flags);
 343     while (code) {
 344         Category& log=Category::getInstance("OpenSSL");
 345         log.errorStream() << "error code: " << code << " in " << file << ", line " << line << CategoryStream::ENDLINE;
 346         if (data && (flags & ERR_TXT_STRING))
 347             log.errorStream() << "error data: " << data << CategoryStream::ENDLINE;
 348         code=ERR_get_error_line_data(&file,&line,&data,&flags);
 349     }
 350 }
 351
 352 XSECCryptoX509CRL* XMLToolingInternalConfig::X509CRL() const
 353 {
 354     return new OpenSSLCryptoX509CRL();
 355 }
 356 #endif