--- /dev/null
+/*
+ * Copyright (c) 2004-2005 Apple Computer, Inc. All Rights Reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+/*
+ * identSearch.cpp - search for identity whose cert has specified email address
+ */
+
+#include "identSearch.h"
+#include <Security/SecKeychainItemPriv.h> /* for kSecAlias */
+
+/*
+ * Does the specified identity's cert have the specified email address? Returns
+ * true if so.
+ */
+bool idHasEmail(
+ SecIdentityRef idRef,
+ const void *emailAddress, // UTF8 encoded email address
+ unsigned emailAddressLen)
+{
+ SecCertificateRef certRef;
+ OSStatus ortn;
+ bool ourRtn = false;
+
+ ortn = SecIdentityCopyCertificate(idRef, &certRef);
+ if(ortn) {
+ /* should never happen */
+ cssmPerror("SecIdentityCopyCertificate", ortn);
+ return ortn;
+ }
+
+ /*
+ * Fetch one attribute - the alias (which is always the "best attempt" at
+ * finding an email address within a cert).
+ */
+ UInt32 oneTag = kSecAlias;
+ SecKeychainAttributeInfo attrInfo;
+ attrInfo.count = 1;
+ attrInfo.tag = &oneTag;
+ attrInfo.format = NULL;
+ SecKeychainAttributeList *attrList = NULL;
+ SecKeychainAttribute *attr = NULL;
+
+ ortn = SecKeychainItemCopyAttributesAndData((SecKeychainItemRef)certRef,
+ &attrInfo,
+ NULL, // itemClass
+ &attrList,
+ NULL, // length - don't need the data
+ NULL); // outData
+ if(ortn || (attrList == NULL) || (attrList->count != 1)) {
+ /* I don't *think* this should ever happen... */
+ cssmPerror("SecKeychainItemCopyAttributesAndData", ortn);
+ goto errOut;
+ }
+ attr = attrList->attr;
+ if(attr->length == emailAddressLen) {
+ if(!memcmp(attr->data, emailAddress, emailAddressLen)) {
+ ourRtn = true;
+ }
+ }
+errOut:
+ SecKeychainItemFreeAttributesAndData(attrList, NULL);
+ CFRelease(certRef);
+ return ourRtn;
+}
+
+/* public function */
+OSStatus findIdentity(
+ const void *emailAddress, // UTF8 encoded email address
+ unsigned emailAddressLen,
+ SecKeychainRef kcRef, // keychain to search, or NULL to search all
+ SecIdentityRef *idRef) // RETURNED
+{
+ OSStatus ortn;
+
+ /* Search for all identities */
+ SecIdentitySearchRef srchRef = nil;
+ ortn = SecIdentitySearchCreate(kcRef,
+ 0, // keyUsage - any
+ &srchRef);
+ if(ortn) {
+ /* should never happen */
+ cssmPerror("SecIdentitySearchCreate", ortn);
+ return ortn;
+ }
+
+ SecIdentityRef foundId = NULL;
+ do {
+ SecIdentityRef thisId;
+ ortn = SecIdentitySearchCopyNext(srchRef, &thisId);
+ if(ortn != noErr) {
+ break;
+ }
+ /* email addres match? */
+ if(idHasEmail(thisId, emailAddress, emailAddressLen)) {
+ foundId = thisId;
+ break;
+ }
+ else {
+ /* we're done with thie identity */
+ CFRelease(thisId);
+ }
+ } while(ortn == noErr);
+ CFRelease(srchRef);
+ if(foundId) {
+ *idRef = foundId;
+ return noErr;
+ }
+ else {
+ return errSecItemNotFound;
+ }
+}
+