saml/SAMLConfig.cpp

   1
   2 /*
   3  *  Copyright 2001-2006 Internet2
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17
  18 /**
  19  * SAMLConfig.cpp
  20  *
  21  * Library configuration
  22  */
  23
  24 #include "internal.h"
  25 #include "exceptions.h"
  26 #include "SAMLConfig.h"
  27 #include "binding/ArtifactMap.h"
  28 #include "binding/MessageDecoder.h"
  29 #include "binding/MessageEncoder.h"
  30 #include "binding/SAMLArtifact.h"
  31 #include "binding/URLEncoder.h"
  32 #include "saml1/core/Assertions.h"
  33 #include "saml1/core/Protocols.h"
  34 #include "saml2/core/Protocols.h"
  35 #include "saml2/metadata/Metadata.h"
  36 #include "saml2/metadata/MetadataProvider.h"
  37 #include "security/TrustEngine.h"
  38 #include "util/SAMLConstants.h"
  39
  40 #include <xmltooling/XMLToolingConfig.h>
  41 #include <xmltooling/signature/Signature.h>
  42 #include <xmltooling/util/NDC.h>
  43
  44 #include <log4cpp/Category.hh>
  45 #include <xsec/enc/XSECCryptoException.hpp>
  46 #include <xsec/enc/XSECCryptoProvider.hpp>
  47 #include <xsec/utils/XSECPlatformUtils.hpp>
  48 #include <openssl/err.h>
  49
  50 using namespace opensaml;
  51 using namespace xmlsignature;
  52 using namespace xmltooling;
  53 using namespace log4cpp;
  54 using namespace std;
  55
  56 // Expose entry points when used as an extension library
  57
  58 extern "C" int SAML_API xmltooling_extension_init(void*)
  59 {
  60     if (SAMLConfig::getConfig().init(false))
  61         return 0;
  62     return -1;
  63 }
  64
  65 extern "C" void SAML_API xmltooling_extension_term()
  66 {
  67     SAMLConfig::getConfig().term(false);
  68 }
  69
  70 DECL_EXCEPTION_FACTORY(ArtifactException,opensaml);
  71 DECL_EXCEPTION_FACTORY(MetadataFilterException,opensaml::saml2md);
  72 DECL_EXCEPTION_FACTORY(BindingException,opensaml);
  73
  74 namespace opensaml {
  75    SAMLInternalConfig g_config;
  76 }
  77
  78 SAMLConfig& SAMLConfig::getConfig()
  79 {
  80     return g_config;
  81 }
  82
  83 SAMLInternalConfig& SAMLInternalConfig::getInternalConfig()
  84 {
  85     return g_config;
  86 }
  87
  88 void SAMLConfig::setArtifactMap(ArtifactMap* artifactMap)
  89 {
  90     delete m_artifactMap;
  91     m_artifactMap = artifactMap;
  92 }
  93
  94 void SAMLConfig::setURLEncoder(URLEncoder* urlEncoder)
  95 {
  96     delete m_urlEncoder;
  97     m_urlEncoder = urlEncoder;
  98 }
  99
 100 bool SAMLInternalConfig::init(bool initXMLTooling)
 101 {
 102 #ifdef _DEBUG
 103     xmltooling::NDC ndc("init");
 104 #endif
 105     Category& log=Category::getInstance(SAML_LOGCAT".SAMLConfig");
 106     log.debug("library initialization started");
 107
 108     if (initXMLTooling) {
 109         XMLToolingConfig::getConfig().init();
 110         log.debug("XMLTooling library initialized");
 111     }
 112
 113     REGISTER_EXCEPTION_FACTORY(ArtifactException,opensaml);
 114     REGISTER_EXCEPTION_FACTORY(MetadataFilterException,opensaml::saml2md);
 115     REGISTER_EXCEPTION_FACTORY(BindingException,opensaml);
 116
 117     saml1::registerAssertionClasses();
 118     saml1p::registerProtocolClasses();
 119     saml2::registerAssertionClasses();
 120     saml2p::registerProtocolClasses();
 121     saml2md::registerMetadataClasses();
 122     saml2md::registerMetadataProviders();
 123     saml2md::registerMetadataFilters();
 124     registerSAMLArtifacts();
 125     registerTrustEngines();
 126     registerMessageEncoders();
 127     registerMessageDecoders();
 128
 129     m_urlEncoder = new URLEncoder();
 130
 131     log.info("library initialization complete");
 132     return true;
 133 }
 134
 135 void SAMLInternalConfig::term(bool termXMLTooling)
 136 {
 137 #ifdef _DEBUG
 138     xmltooling::NDC ndc("term");
 139 #endif
 140     Category& log=Category::getInstance(SAML_LOGCAT".SAMLConfig");
 141
 142     MessageDecoderManager.deregisterFactories();
 143     MessageEncoderManager.deregisterFactories();
 144     TrustEngineManager.deregisterFactories();
 145     SAMLArtifactManager.deregisterFactories();
 146     MetadataFilterManager.deregisterFactories();
 147     MetadataProviderManager.deregisterFactories();
 148
 149     delete m_artifactMap;
 150     m_artifactMap = NULL;
 151     delete m_urlEncoder;
 152     m_urlEncoder = NULL;
 153
 154     if (termXMLTooling) {
 155         XMLToolingConfig::getConfig().term();
 156         log.debug("XMLTooling library shut down");
 157     }
 158     log.info("library shutdown complete");
 159 }
 160
 161 void SAMLInternalConfig::generateRandomBytes(void* buf, unsigned int len)
 162 {
 163     try {
 164         if (XSECPlatformUtils::g_cryptoProvider->getRandom(reinterpret_cast<unsigned char*>(buf),len)<len)
 165             throw XMLSecurityException("Unable to generate random data; was PRNG seeded?");
 166     }
 167     catch (XSECCryptoException& e) {
 168         throw XMLSecurityException("Unable to generate random data: $1",params(1,e.getMsg()));
 169     }
 170 }
 171
 172 void SAMLInternalConfig::generateRandomBytes(std::string& buf, unsigned int len)
 173 {
 174     buf.erase();
 175     auto_ptr<unsigned char> hold(new unsigned char[len]);
 176     generateRandomBytes(hold.get(),len);
 177     for (unsigned int i=0; i<len; i++)
 178         buf+=(hold.get())[i];
 179 }
 180
 181 XMLCh* SAMLInternalConfig::generateIdentifier()
 182 {
 183     unsigned char key[17];
 184     generateRandomBytes(key,16);
 185
 186     char hexform[34];
 187     sprintf(hexform,"_%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
 188             key[0],key[1],key[2],key[3],key[4],key[5],key[6],key[7],
 189             key[8],key[9],key[10],key[11],key[12],key[13],key[14],key[15]);
 190     hexform[33]=0;
 191     return XMLString::transcode(hexform);
 192 }
 193
 194 string SAMLInternalConfig::hashSHA1(const char* s, bool toHex)
 195 {
 196     static char DIGITS[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
 197
 198     auto_ptr<XSECCryptoHash> hasher(XSECPlatformUtils::g_cryptoProvider->hashSHA1());
 199     if (hasher.get()) {
 200         auto_ptr<char> dup(strdup(s));
 201         unsigned char buf[21];
 202         hasher->hash(reinterpret_cast<unsigned char*>(dup.get()),strlen(dup.get()));
 203         if (hasher->finish(buf,20)==20) {
 204             string ret;
 205             if (toHex) {
 206                 for (unsigned int i=0; i<20; i++) {
 207                     ret+=(DIGITS[((unsigned char)(0xF0 & buf[i])) >> 4 ]);
 208                     ret+=(DIGITS[0x0F & buf[i]]);
 209                 }
 210             }
 211             else {
 212                 for (unsigned int i=0; i<20; i++) {
 213                     ret+=buf[i];
 214                 }
 215             }
 216             return ret;
 217         }
 218     }
 219     throw XMLSecurityException("Unable to generate SHA-1 hash.");
 220 }
 221
 222 void opensaml::log_openssl()
 223 {
 224     const char* file;
 225     const char* data;
 226     int flags,line;
 227
 228     unsigned long code=ERR_get_error_line_data(&file,&line,&data,&flags);
 229     while (code) {
 230         Category& log=Category::getInstance("OpenSSL");
 231         log.errorStream() << "error code: " << code << " in " << file << ", line " << line << CategoryStream::ENDLINE;
 232         if (data && (flags & ERR_TXT_STRING))
 233             log.errorStream() << "error data: " << data << CategoryStream::ENDLINE;
 234         code=ERR_get_error_line_data(&file,&line,&data,&flags);
 235     }
 236 }
 237
 238 using namespace saml2md;
 239
 240 void opensaml::annotateException(XMLToolingException* e, const EntityDescriptor* entity, bool rethrow)
 241 {
 242     if (entity) {
 243         auto_ptr_char id(entity->getEntityID());
 244         e->addProperty("entityID",id.get());
 245         const list<XMLObject*>& roles=entity->getOrderedChildren();
 246         for (list<XMLObject*>::const_iterator child=roles.begin(); child!=roles.end(); ++child) {
 247             const RoleDescriptor* role=dynamic_cast<RoleDescriptor*>(*child);
 248             if (role && role->isValid()) {
 249                 const vector<ContactPerson*>& contacts=role->getContactPersons();
 250                 for (vector<ContactPerson*>::const_iterator c=contacts.begin(); c!=contacts.end(); ++c) {
 251                     const XMLCh* ctype=(*c)->getContactType();
 252                     if (ctype && (XMLString::equals(ctype,ContactPerson::CONTACT_SUPPORT)
 253                             || XMLString::equals(ctype,ContactPerson::CONTACT_TECHNICAL))) {
 254                         GivenName* fname=(*c)->getGivenName();
 255                         SurName* lname=(*c)->getSurName();
 256                         auto_ptr_char first(fname ? fname->getName() : NULL);
 257                         auto_ptr_char last(lname ? lname->getName() : NULL);
 258                         if (first.get() && last.get()) {
 259                             string contact=string(first.get()) + ' ' + last.get();
 260                             e->addProperty("contactName",contact.c_str());
 261                         }
 262                         else if (first.get())
 263                             e->addProperty("contactName",first.get());
 264                         else if (last.get())
 265                             e->addProperty("contactName",last.get());
 266                         const vector<EmailAddress*>& emails=const_cast<const ContactPerson*>(*c)->getEmailAddresss();
 267                         if (!emails.empty()) {
 268                             auto_ptr_char email(emails.front()->getAddress());
 269                             if (email.get())
 270                                 e->addProperty("contactEmail",email.get());
 271                         }
 272                         break;
 273                     }
 274                 }
 275                 if (e->getProperty("contactName") || e->getProperty("contactEmail")) {
 276                     auto_ptr_char eurl(role->getErrorURL());
 277                     if (eurl.get()) {
 278                         e->addProperty("errorURL",eurl.get());
 279                     }
 280                 }
 281                 break;
 282             }
 283         }
 284     }
 285
 286     if (rethrow)
 287         e->raise();
 288 }
 289
 290 void opensaml::annotateException(XMLToolingException* e, const RoleDescriptor* role, bool rethrow)
 291 {
 292     if (role) {
 293         auto_ptr_char id(dynamic_cast<EntityDescriptor*>(role->getParent())->getEntityID());
 294         e->addProperty("entityID",id.get());
 295
 296         const vector<ContactPerson*>& contacts=role->getContactPersons();
 297         for (vector<ContactPerson*>::const_iterator c=contacts.begin(); c!=contacts.end(); ++c) {
 298             const XMLCh* ctype=(*c)->getContactType();
 299             if (ctype && (XMLString::equals(ctype,ContactPerson::CONTACT_SUPPORT)
 300                     || XMLString::equals(ctype,ContactPerson::CONTACT_TECHNICAL))) {
 301                 GivenName* fname=(*c)->getGivenName();
 302                 SurName* lname=(*c)->getSurName();
 303                 auto_ptr_char first(fname ? fname->getName() : NULL);
 304                 auto_ptr_char last(lname ? lname->getName() : NULL);
 305                 if (first.get() && last.get()) {
 306                     string contact=string(first.get()) + ' ' + last.get();
 307                     e->addProperty("contactName",contact.c_str());
 308                 }
 309                 else if (first.get())
 310                     e->addProperty("contactName",first.get());
 311                 else if (last.get())
 312                     e->addProperty("contactName",last.get());
 313                 const vector<EmailAddress*>& emails=const_cast<const ContactPerson*>(*c)->getEmailAddresss();
 314                 if (!emails.empty()) {
 315                     auto_ptr_char email(emails.front()->getAddress());
 316                     if (email.get())
 317                         e->addProperty("contactEmail",email.get());
 318                 }
 319                 break;
 320             }
 321         }
 322
 323         auto_ptr_char eurl(role->getErrorURL());
 324         if (eurl.get()) {
 325             e->addProperty("errorURL",eurl.get());
 326         }
 327     }
 328
 329     if (rethrow)
 330         e->raise();
 331 }