OSX/libsecurity_keychain/lib/PolicyCursor.cpp

   1 /*
   2  * Copyright (c) 2002-2004,2011-2012,2014 Apple Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 //
  25 // PolicyCursor.cpp
  26 //
  27 #include <security_keychain/PolicyCursor.h>
  28 #include <security_keychain/Policies.h>
  29 #include <Security/oidsalg.h>
  30 #include <security_cdsa_client/tpclient.h>
  31
  32 using namespace KeychainCore;
  33 using namespace CssmClient;
  34
  35
  36 //
  37 // This preliminary implementation bypasses MDS and uses
  38 // a fixed set of policies known to exist in the one known TP.
  39 //
  40 struct TheOneTP : public TP {
  41         TheOneTP() : TP(gGuidAppleX509TP) { }
  42 };
  43
  44 static ModuleNexus<TheOneTP> theOneTP;
  45 static const CssmOid *theOidList[] = {
  46         static_cast<const CssmOid *>(&CSSMOID_APPLE_ISIGN),
  47         static_cast<const CssmOid *>(&CSSMOID_APPLE_X509_BASIC),
  48         static_cast<const CssmOid *>(&CSSMOID_APPLE_TP_SSL),
  49         static_cast<const CssmOid *>(&CSSMOID_APPLE_TP_SMIME),
  50         static_cast<const CssmOid *>(&CSSMOID_APPLE_TP_EAP),
  51         static_cast<const CssmOid *>(&CSSMOID_APPLE_TP_SW_UPDATE_SIGNING),
  52         static_cast<const CssmOid *>(&CSSMOID_APPLE_TP_IP_SEC),
  53         static_cast<const CssmOid *>(&CSSMOID_APPLE_TP_ICHAT),
  54         static_cast<const CssmOid *>(&CSSMOID_APPLE_TP_RESOURCE_SIGN),
  55         static_cast<const CssmOid *>(&CSSMOID_APPLE_TP_PKINIT_CLIENT),
  56         static_cast<const CssmOid *>(&CSSMOID_APPLE_TP_PKINIT_SERVER),
  57         static_cast<const CssmOid *>(&CSSMOID_APPLE_TP_CODE_SIGNING),
  58         static_cast<const CssmOid *>(&CSSMOID_APPLE_TP_PACKAGE_SIGNING),
  59         static_cast<const CssmOid *>(&CSSMOID_APPLE_TP_REVOCATION_CRL),
  60         static_cast<const CssmOid *>(&CSSMOID_APPLE_TP_REVOCATION_OCSP),
  61         static_cast<const CssmOid *>(&CSSMOID_APPLE_TP_MACAPPSTORE_RECEIPT),
  62         static_cast<const CssmOid *>(&CSSMOID_APPLE_TP_APPLEID_SHARING),
  63         static_cast<const CssmOid *>(&CSSMOID_APPLE_TP_TIMESTAMPING),
  64         NULL    // sentinel
  65 };
  66
  67
  68 //
  69 // Canonical Construction
  70 //
  71 PolicyCursor::PolicyCursor(const CSSM_OID* oid, const CSSM_DATA* value)
  72     : mOid(Allocator::standard()), mOidGiven(false), mMutex(Mutex::recursive)
  73 {
  74     if (oid) {
  75         mOid = CssmOid::required(oid);
  76         mOidGiven = true;
  77     }
  78     mSearchPos = 0;
  79 }
  80
  81
  82 //
  83 // Destroy
  84 //
  85 PolicyCursor::~PolicyCursor() throw()
  86 {
  87 }
  88
  89
  90 //
  91 // Crank the iterator
  92 //
  93 bool PolicyCursor::next(SecPointer<Policy> &policy)
  94 {
  95         StLock<Mutex>_(mMutex);
  96
  97     while (theOidList[mSearchPos]) {
  98         if (mOidGiven && mOid != *theOidList[mSearchPos]) {
  99             mSearchPos++;
 100             continue;   // no oid match
 101         }
 102         // ignoring mValue - not used by current TP
 103         policy = new Policy(theOneTP(), *theOidList[mSearchPos]);
 104         mSearchPos++;   // advance cursor
 105         return true;    // return next match
 106     }
 107     return false;       // end of table, no more matches
 108 }
 109
 110 //
 111 // Return a new policy instance for an OID, outside of cursor iteration
 112 //
 113 void PolicyCursor::policy(const CSSM_OID* oid, SecPointer<Policy> &policy)
 114 {
 115         const CssmOid *policyOid = static_cast<const CssmOid *>(oid);
 116         policy = new Policy(theOneTP(), *policyOid);
 117 }
 118