2 * Copyright 2001-2007 Internet2
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4 * Licensed under the Apache License, Version 2.0 (the "License");
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5 * you may not use this file except in compliance with the License.
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6 * You may obtain a copy of the License at
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8 * http://www.apache.org/licenses/LICENSE-2.0
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10 * Unless required by applicable law or agreed to in writing, software
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11 * distributed under the License is distributed on an "AS IS" BASIS,
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12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 * See the License for the specific language governing permissions and
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14 * limitations under the License.
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17 /** XMLRequestMapper.cpp
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19 * XML-based RequestMapper implementation
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22 #include "internal.h"
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23 #include "AccessControl.h"
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24 #include "RequestMapper.h"
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25 #include "SPRequest.h"
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26 #include "util/DOMPropertySet.h"
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27 #include "util/SPConstants.h"
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29 #include <xmltooling/util/NDC.h>
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30 #include <xmltooling/util/ReloadableXMLFile.h>
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31 #include <xmltooling/util/XMLHelper.h>
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32 #include <xercesc/util/XMLUniDefs.hpp>
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34 using namespace shibsp;
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35 using namespace xmltooling;
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36 using namespace log4cpp;
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37 using namespace std;
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41 // Blocks access when an ACL plugin fails to load.
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42 class AccessControlDummy : public AccessControl
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51 bool authorized(const SPRequest& request, const Session* session) const {
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56 class Override : public DOMPropertySet, public DOMNodeFilter
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59 Override() : m_base(NULL), m_acl(NULL) {}
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60 Override(const DOMElement* e, Category& log, const Override* base=NULL);
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64 pair<bool,bool> getBool(const char* name, const char* ns=NULL) const;
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65 pair<bool,const char*> getString(const char* name, const char* ns=NULL) const;
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66 pair<bool,const XMLCh*> getXMLString(const char* name, const char* ns=NULL) const;
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67 pair<bool,unsigned int> getUnsignedInt(const char* name, const char* ns=NULL) const;
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68 pair<bool,int> getInt(const char* name, const char* ns=NULL) const;
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69 const PropertySet* getPropertySet(const char* name, const char* ns="urn:mace:shibboleth:2.0:native:sp:config") const;
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71 // Provides filter to exclude special config elements.
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72 short acceptNode(const DOMNode* node) const;
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74 const Override* locate(const char* path) const;
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75 AccessControl* getAC() const { return (m_acl ? m_acl : (m_base ? m_base->getAC() : NULL)); }
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78 void loadACL(const DOMElement* e, Category& log);
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80 map<string,Override*> m_map;
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83 const Override* m_base;
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84 AccessControl* m_acl;
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87 class XMLRequestMapperImpl : public Override
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90 XMLRequestMapperImpl(const DOMElement* e, Category& log);
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92 ~XMLRequestMapperImpl() {
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94 m_document->release();
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97 void setDocument(DOMDocument* doc) {
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101 const Override* findOverride(const char* vhost, const char* path) const;
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104 map<string,Override*> m_extras;
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105 DOMDocument* m_document;
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108 #if defined (_MSC_VER)
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109 #pragma warning( push )
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110 #pragma warning( disable : 4250 )
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113 class XMLRequestMapper : public RequestMapper, public ReloadableXMLFile
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116 XMLRequestMapper(const DOMElement* e) : ReloadableXMLFile(e,Category::getInstance(SHIBSP_LOGCAT".RequestMapper")), m_impl(NULL) {
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120 ~XMLRequestMapper() {
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124 Settings getSettings(const SPRequest& request) const;
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127 pair<bool,DOMElement*> load();
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130 XMLRequestMapperImpl* m_impl;
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133 #if defined (_MSC_VER)
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134 #pragma warning( pop )
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137 RequestMapper* SHIBSP_DLLLOCAL XMLRequestMapperFactory(const DOMElement* const & e)
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139 return new XMLRequestMapper(e);
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142 static const XMLCh _AccessControl[] = UNICODE_LITERAL_13(A,c,c,e,s,s,C,o,n,t,r,o,l);
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143 static const XMLCh AccessControlProvider[] = UNICODE_LITERAL_21(A,c,c,e,s,s,C,o,n,t,r,o,l,P,r,o,v,i,d,e,r);
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144 static const XMLCh htaccess[] = UNICODE_LITERAL_8(h,t,a,c,c,e,s,s);
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145 static const XMLCh Host[] = UNICODE_LITERAL_4(H,o,s,t);
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146 static const XMLCh Path[] = UNICODE_LITERAL_4(P,a,t,h);
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147 static const XMLCh name[] = UNICODE_LITERAL_4(n,a,m,e);
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148 static const XMLCh _type[] = UNICODE_LITERAL_4(t,y,p,e);
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151 void SHIBSP_API shibsp::registerRequestMappers()
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153 SPConfig& conf=SPConfig::getConfig();
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154 conf.RequestMapperManager.registerFactory(XML_REQUEST_MAPPER, XMLRequestMapperFactory);
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155 conf.RequestMapperManager.registerFactory("edu.internet2.middleware.shibboleth.sp.provider.XMLRequestMapProvider", XMLRequestMapperFactory);
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156 conf.RequestMapperManager.registerFactory("edu.internet2.middleware.shibboleth.target.provider.XMLRequestMap", XMLRequestMapperFactory);
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157 conf.RequestMapperManager.registerFactory(NATIVE_REQUEST_MAPPER, XMLRequestMapperFactory);
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158 conf.RequestMapperManager.registerFactory("edu.internet2.middleware.shibboleth.sp.provider.NativeRequestMapProvider", XMLRequestMapperFactory);
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161 short Override::acceptNode(const DOMNode* node) const
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163 if (!XMLString::equals(node->getNamespaceURI(),shibspconstants::SHIB2SPCONFIG_NS))
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164 return FILTER_ACCEPT;
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165 const XMLCh* name=node->getLocalName();
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166 if (XMLString::equals(name,Host) ||
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167 XMLString::equals(name,Path) ||
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168 XMLString::equals(name,_AccessControl) ||
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169 XMLString::equals(name,htaccess) ||
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170 XMLString::equals(name,AccessControlProvider))
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171 return FILTER_REJECT;
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173 return FILTER_ACCEPT;
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176 void Override::loadACL(const DOMElement* e, Category& log)
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179 const DOMElement* acl=XMLHelper::getFirstChildElement(e,htaccess);
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181 log.info("building Apache htaccess AccessControl provider...");
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182 m_acl=SPConfig::getConfig().AccessControlManager.newPlugin(HT_ACCESS_CONTROL,acl);
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185 acl=XMLHelper::getFirstChildElement(e,_AccessControl);
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187 log.info("building XML-based AccessControl provider...");
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188 m_acl=SPConfig::getConfig().AccessControlManager.newPlugin(XML_ACCESS_CONTROL,acl);
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191 acl=XMLHelper::getFirstChildElement(e,AccessControlProvider);
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193 auto_ptr_char type(acl->getAttributeNS(NULL,_type));
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194 log.info("building AccessControl provider of type %s...",type.get());
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195 m_acl=SPConfig::getConfig().AccessControlManager.newPlugin(type.get(),acl);
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200 catch (exception& ex) {
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201 log.crit("exception building AccessControl provider: %s", ex.what());
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202 m_acl = new AccessControlDummy();
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206 Override::Override(const DOMElement* e, Category& log, const Override* base) : m_base(base), m_acl(NULL)
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209 // Load the property set.
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212 // Load any AccessControl provider.
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215 // Handle nested Paths.
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216 DOMElement* path = XMLHelper::getFirstChildElement(e,Path);
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217 for (int i=1; path; ++i, path=XMLHelper::getNextSiblingElement(path,Path)) {
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218 const XMLCh* n=path->getAttributeNS(NULL,name);
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220 // Skip any leading slashes.
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221 while (n && *n==chForwardSlash)
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224 // Check for empty name.
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226 log.warn("skipping Path element (%d) with empty name attribute", i);
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230 // Check for an embedded slash.
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231 int slash=XMLString::indexOf(n,chForwardSlash);
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233 // Copy the first path segment.
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234 XMLCh* namebuf=new XMLCh[slash + 1];
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235 for (int pos=0; pos < slash; pos++)
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236 namebuf[pos]=n[pos];
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237 namebuf[slash]=chNull;
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239 // Move past the slash in the original pathname.
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242 // Skip any leading slashes again.
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243 while (*n==chForwardSlash)
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247 // Create a placeholder Path element for the first path segment and replant under it.
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248 DOMElement* newpath=path->getOwnerDocument()->createElementNS(shibspconstants::SHIB2SPCONFIG_NS,Path);
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249 newpath->setAttributeNS(NULL,name,namebuf);
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250 path->setAttributeNS(NULL,name,n);
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251 path->getParentNode()->replaceChild(newpath,path);
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252 newpath->appendChild(path);
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254 // Repoint our locals at the new parent.
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256 n=path->getAttributeNS(NULL,name);
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259 // All we had was a pathname with trailing slash(es), so just reset it without them.
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260 path->setAttributeNS(NULL,name,namebuf);
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261 n=path->getAttributeNS(NULL,name);
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266 Override* o=new Override(path,log,this);
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267 pair<bool,const char*> name=o->getString("name");
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268 char* dup=strdup(name.second);
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269 for (char* pch=dup; *pch; pch++)
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270 *pch=tolower(*pch);
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271 if (m_map.count(dup)) {
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272 log.warn("Skipping duplicate Path element (%s)",dup);
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281 catch (exception&) {
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283 for_each(m_map.begin(),m_map.end(),xmltooling::cleanup_pair<string,Override>());
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288 Override::~Override()
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291 for_each(m_map.begin(),m_map.end(),xmltooling::cleanup_pair<string,Override>());
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294 pair<bool,bool> Override::getBool(const char* name, const char* ns) const
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296 pair<bool,bool> ret=DOMPropertySet::getBool(name,ns);
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299 return m_base ? m_base->getBool(name,ns) : ret;
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302 pair<bool,const char*> Override::getString(const char* name, const char* ns) const
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304 pair<bool,const char*> ret=DOMPropertySet::getString(name,ns);
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307 return m_base ? m_base->getString(name,ns) : ret;
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310 pair<bool,const XMLCh*> Override::getXMLString(const char* name, const char* ns) const
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312 pair<bool,const XMLCh*> ret=DOMPropertySet::getXMLString(name,ns);
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315 return m_base ? m_base->getXMLString(name,ns) : ret;
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318 pair<bool,unsigned int> Override::getUnsignedInt(const char* name, const char* ns) const
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320 pair<bool,unsigned int> ret=DOMPropertySet::getUnsignedInt(name,ns);
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323 return m_base ? m_base->getUnsignedInt(name,ns) : ret;
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326 pair<bool,int> Override::getInt(const char* name, const char* ns) const
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328 pair<bool,int> ret=DOMPropertySet::getInt(name,ns);
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331 return m_base ? m_base->getInt(name,ns) : ret;
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334 const PropertySet* Override::getPropertySet(const char* name, const char* ns) const
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336 const PropertySet* ret=DOMPropertySet::getPropertySet(name,ns);
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337 if (ret || !m_base)
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339 return m_base->getPropertySet(name,ns);
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342 const Override* Override::locate(const char* path) const
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344 char* dup=strdup(path);
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345 char* sep=strchr(dup,'?');
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348 for (char* pch=dup; *pch; pch++)
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349 *pch=tolower(*pch);
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351 const Override* o=this;
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353 #ifdef HAVE_STRTOK_R
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355 const char* token=strtok_r(dup,"/",&pos);
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357 const char* token=strtok(dup,"/");
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361 map<string,Override*>::const_iterator i=o->m_map.find(token);
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362 if (i==o->m_map.end())
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365 #ifdef HAVE_STRTOK_R
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366 token=strtok_r(NULL,"/",&pos);
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368 token=strtok(NULL,"/");
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376 XMLRequestMapperImpl::XMLRequestMapperImpl(const DOMElement* e, Category& log) : m_document(NULL)
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379 xmltooling::NDC ndc("XMLRequestMapperImpl");
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382 // Load the property set.
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385 // Load any AccessControl provider.
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388 // Loop over the Host elements.
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389 const DOMElement* host = XMLHelper::getFirstChildElement(e,Host);
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390 for (int i=1; host; ++i, host=XMLHelper::getNextSiblingElement(host,Host)) {
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391 const XMLCh* n=host->getAttributeNS(NULL,name);
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393 log.warn("Skipping Host element (%d) with empty name attribute",i);
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397 Override* o=new Override(host,log,this);
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398 pair<bool,const char*> name=o->getString("name");
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399 pair<bool,const char*> scheme=o->getString("scheme");
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400 pair<bool,const char*> port=o->getString("port");
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402 char* dup=strdup(name.second);
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403 for (char* pch=dup; *pch; pch++)
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404 *pch=tolower(*pch);
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405 auto_ptr<char> dupwrap(dup);
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407 if (!scheme.first && port.first) {
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408 // No scheme, but a port, so assume http.
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409 scheme = pair<bool,const char*>(true,"http");
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411 else if (scheme.first && !port.first) {
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412 // Scheme, no port, so default it.
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413 // XXX Use getservbyname instead?
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415 if (!strcmp(scheme.second,"http"))
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416 port.second = "80";
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417 else if (!strcmp(scheme.second,"https"))
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418 port.second = "443";
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419 else if (!strcmp(scheme.second,"ftp"))
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420 port.second = "21";
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421 else if (!strcmp(scheme.second,"ldap"))
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422 port.second = "389";
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423 else if (!strcmp(scheme.second,"ldaps"))
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424 port.second = "636";
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427 if (scheme.first) {
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428 string url(scheme.second);
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429 url=url + "://" + dup;
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431 // Is this the default port?
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432 if ((!strcmp(scheme.second,"http") && !strcmp(port.second,"80")) ||
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433 (!strcmp(scheme.second,"https") && !strcmp(port.second,"443")) ||
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434 (!strcmp(scheme.second,"ftp") && !strcmp(port.second,"21")) ||
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435 (!strcmp(scheme.second,"ldap") && !strcmp(port.second,"389")) ||
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436 (!strcmp(scheme.second,"ldaps") && !strcmp(port.second,"636"))) {
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437 // First store a port-less version.
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438 if (m_map.count(url) || m_extras.count(url)) {
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439 log.warn("Skipping duplicate Host element (%s)",url.c_str());
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444 log.debug("Added <Host> mapping for %s",url.c_str());
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446 // Now append the port. We use the extras vector, to avoid double freeing the object later.
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447 url=url + ':' + port.second;
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449 log.debug("Added <Host> mapping for %s",url.c_str());
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452 url=url + ':' + port.second;
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453 if (m_map.count(url) || m_extras.count(url)) {
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454 log.warn("Skipping duplicate Host element (%s)",url.c_str());
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459 log.debug("Added <Host> mapping for %s",url.c_str());
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463 // No scheme or port, so we enter dual hosts on http:80 and https:443
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464 string url("http://");
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466 if (m_map.count(url) || m_extras.count(url)) {
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467 log.warn("Skipping duplicate Host element (%s)",url.c_str());
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472 log.debug("Added <Host> mapping for %s",url.c_str());
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475 if (m_map.count(url) || m_extras.count(url)) {
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476 log.warn("Skipping duplicate Host element (%s)",url.c_str());
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480 log.debug("Added <Host> mapping for %s",url.c_str());
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484 if (m_map.count(url) || m_extras.count(url)) {
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485 log.warn("Skipping duplicate Host element (%s)",url.c_str());
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489 log.debug("Added <Host> mapping for %s",url.c_str());
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491 url = url + ":443";
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492 if (m_map.count(url) || m_extras.count(url)) {
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493 log.warn("Skipping duplicate Host element (%s)",url.c_str());
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497 log.debug("Added <Host> mapping for %s",url.c_str());
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502 const Override* XMLRequestMapperImpl::findOverride(const char* vhost, const char* path) const
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504 const Override* o=NULL;
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505 map<string,Override*>::const_iterator i=m_map.find(vhost);
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506 if (i!=m_map.end())
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509 i=m_extras.find(vhost);
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510 if (i!=m_extras.end())
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514 return o ? o->locate(path) : this;
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517 pair<bool,DOMElement*> XMLRequestMapper::load()
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519 // Load from source using base class.
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520 pair<bool,DOMElement*> raw = ReloadableXMLFile::load();
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522 // If we own it, wrap it.
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523 XercesJanitor<DOMDocument> docjanitor(raw.first ? raw.second->getOwnerDocument() : NULL);
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525 XMLRequestMapperImpl* impl = new XMLRequestMapperImpl(raw.second,m_log);
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527 // If we held the document, transfer it to the impl. If we didn't, it's a no-op.
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528 impl->setDocument(docjanitor.release());
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533 return make_pair(false,(DOMElement*)NULL);
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536 RequestMapper::Settings XMLRequestMapper::getSettings(const SPRequest& request) const
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538 ostringstream vhost;
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539 vhost << request.getScheme() << "://" << request.getHostname() << ':' << request.getPort();
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541 const Override* o=m_impl->findOverride(vhost.str().c_str(), request.getRequestURI());
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543 if (m_log.isDebugEnabled()) {
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545 xmltooling::NDC ndc("getSettings");
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547 pair<bool,const char*> ret=o->getString("applicationId");
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548 m_log.debug("mapped %s%s to %s", vhost.str().c_str(), request.getRequestURI() ? request.getRequestURI() : "", ret.second);
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551 return Settings(o,o->getAC());
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