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