saml/saml2/metadata/impl/FolderMetadataProvider.cpp

   1 /**
   2  * Licensed to the University Corporation for Advanced Internet
   3  * Development, Inc. (UCAID) under one or more contributor license
   4  * agreements. See the NOTICE file distributed with this work for
   5  * additional information regarding copyright ownership.
   6  *
   7  * UCAID licenses this file to you under the Apache License,
   8  * Version 2.0 (the "License"); you may not use this file except
   9  * in compliance with the License. You may obtain a copy of the
  10  * License at
  11  *
  12  * http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing,
  15  * software distributed under the License is distributed on an
  16  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
  17  * either express or implied. See the License for the specific
  18  * language governing permissions and limitations under the License.
  19  */
  20
  21 /**
  22  * FolderMetadataProvider.cpp
  23  *
  24  * MetadataProvider that loads all files in a directory.
  25  */
  26
  27 #include "internal.h"
  28 #include "exceptions.h"
  29 #include "saml2/metadata/Metadata.h"
  30 #include "saml2/metadata/MetadataProvider.h"
  31
  32 #include <memory>
  33 #include <xercesc/util/XMLUniDefs.hpp>
  34 #include <xmltooling/logging.h>
  35 #include <xmltooling/XMLToolingConfig.h>
  36 #include <xmltooling/util/PathResolver.h>
  37 #include <xmltooling/util/XMLHelper.h>
  38
  39 #ifndef WIN32
  40 # ifdef HAVE_SYS_TYPES_H && HAVE_DIRENT_H
  41 #  include <sys/types.h>
  42 #  include <dirent.h>
  43 # else
  44 #  #error Unsupported directory library headers.
  45 # endif
  46 #endif
  47
  48 using namespace opensaml::saml2md;
  49 using namespace opensaml;
  50 using namespace xmlsignature;
  51 using namespace xmltooling::logging;
  52 using namespace xmltooling;
  53 using namespace std;
  54
  55 namespace opensaml {
  56     namespace saml2md {
  57
  58         static const XMLCh Chaining[] =             UNICODE_LITERAL_8(C,h,a,i,n,i,n,g);
  59         static const XMLCh _MetadataProvider[] =    UNICODE_LITERAL_16(M,e,t,a,d,a,t,a,P,r,o,v,i,d,e,r);
  60         static const XMLCh discoveryFeed[] =        UNICODE_LITERAL_13(d,i,s,c,o,v,e,r,y,F,e,e,d);
  61         static const XMLCh legacyOrgNames[] =       UNICODE_LITERAL_14(l,e,g,a,c,y,O,r,g,N,a,m,e,s);
  62         static const XMLCh path[] =                 UNICODE_LITERAL_4(p,a,t,h);
  63         static const XMLCh precedence[] =           UNICODE_LITERAL_10(p,r,e,c,e,d,e,n,c,e);
  64         static const XMLCh reloadChanges[] =        UNICODE_LITERAL_13(r,e,l,o,a,d,C,h,a,n,g,e,s);
  65         static const XMLCh validate[] =             UNICODE_LITERAL_8(v,a,l,i,d,a,t,e);
  66         static const XMLCh _type[] =                UNICODE_LITERAL_4(t,y,p,e);
  67         static const XMLCh _XML[] =                 UNICODE_LITERAL_3(X,M,L);
  68
  69         MetadataProvider* SAML_DLLLOCAL FolderMetadataProviderFactory(const DOMElement* const & e)
  70         {
  71             // The goal here is to construct a configuration for a chain of file-based providers
  72             // based on the content of the directory we're given.
  73
  74             auto_ptr_char p(e->getAttributeNS(nullptr, path));
  75             if (!p.get() || !*p.get()) {
  76                 throw MetadataException("Folder MetadataProvider missing path setting.");
  77             }
  78
  79             string fullname, loc(p.get());
  80             XMLToolingConfig::getConfig().getPathResolver()->resolve(loc, PathResolver::XMLTOOLING_CFG_FILE);
  81
  82             // First we build a new root element of the right type, and copy in the precedence setting.
  83             DOMElement* root = e->getOwnerDocument()->createElementNS(nullptr, _MetadataProvider);
  84             root->setAttributeNS(nullptr, _type, Chaining);
  85             if (e->hasAttributeNS(nullptr, precedence))
  86                 root->setAttributeNS(nullptr, precedence, e->getAttributeNS(nullptr, precedence));
  87
  88             Category& log = Category::getInstance(SAML_LOGCAT".Metadata.Folder");
  89             log.info("loading metadata files from folder (%s)", loc.c_str());
  90
  91 #ifdef WIN32
  92             WIN32_FIND_DATA f;
  93             fullname = loc + "/*";
  94             HANDLE h = FindFirstFile(fullname.c_str(), &f);
  95             if (h == INVALID_HANDLE_VALUE) {
  96                 if (GetLastError() != ERROR_FILE_NOT_FOUND)
  97                     throw MetadataException("Folder MetadataProvider unable to open directory ($1)", params(1, loc.c_str()));
  98                 log.warn("no files found in folder (%s)", loc.c_str());
  99                 return SAMLConfig::getConfig().MetadataProviderManager.newPlugin(CHAINING_METADATA_PROVIDER, root);
 100             }
 101             do {
 102                 if (f.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
 103                     log.warn("nested folders not supported, skipping (%s)", f.cFileName);
 104                     continue;
 105                 }
 106                 fullname = loc + '/' + f.cFileName;
 107                 log.info("will create metadata source from (%s)", fullname.c_str());
 108                 auto_ptr_XMLCh entry(fullname.c_str());
 109 #else
 110             DIR* d = opendir(loc.c_str());
 111             if (!d) {
 112                 throw MetadataException("Folder MetadataProvider unable to open directory ($1)", params(1, loc.c_str()));
 113             }
 114             struct dirent* ent;
 115             while(readdir_r(d, ent, &ent) == 0 && ent) {
 116                 if (ent->d_type & DT_DIR) {
 117                     if (strcmp(ent->d_name, ".") && strcmp(ent->d_name, ".."))
 118                         log.warn("nested folders not supported, skipping (%s)", ent->d_name);
 119                     continue;
 120                 }
 121                 fullname = loc + '/' + ent->d_name;
 122                 log.info("will create metadata source from (%s)", fullname.c_str());
 123                 auto_ptr_XMLCh entry(fullname.c_str());
 124 #endif
 125                 DOMElement* child = e->getOwnerDocument()->createElementNS(nullptr, _MetadataProvider);
 126                 child->setAttributeNS(nullptr, _type, _XML);
 127                 child->setAttributeNS(nullptr, path, entry.get());
 128                 if (e->hasAttributeNS(nullptr, validate))
 129                     child->setAttributeNS(nullptr, validate, e->getAttributeNS(nullptr, validate));
 130                 if (e->hasAttributeNS(nullptr, reloadChanges))
 131                     child->setAttributeNS(nullptr, reloadChanges, e->getAttributeNS(nullptr, reloadChanges));
 132                 if (e->hasAttributeNS(nullptr, discoveryFeed))
 133                     child->setAttributeNS(nullptr, discoveryFeed, e->getAttributeNS(nullptr, discoveryFeed));
 134                 if (e->hasAttributeNS(nullptr, legacyOrgNames))
 135                     child->setAttributeNS(nullptr, legacyOrgNames, e->getAttributeNS(nullptr, legacyOrgNames));
 136
 137                 DOMElement* filter = XMLHelper::getFirstChildElement(e);
 138                 while (filter) {
 139                     child->appendChild(filter->cloneNode(true));
 140                     filter = XMLHelper::getNextSiblingElement(filter);
 141                 }
 142                 root->appendChild(child);
 143
 144 #ifdef WIN32
 145             } while (FindNextFile(h, &f));
 146             FindClose(h);
 147 #else
 148             }
 149             closedir(d);
 150 #endif
 151             return SAMLConfig::getConfig().MetadataProviderManager.newPlugin(CHAINING_METADATA_PROVIDER, root);
 152         }
 153
 154     };
 155 };