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118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Netscape security libraries.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1994-2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "secplcy.h"
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#include "prmem.h"
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SECCipherFind *sec_CipherFindInit(PRBool onlyAllowed,
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secCPStruct *policy,
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long *ciphers)
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{
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SECCipherFind *find = PR_NEWZAP(SECCipherFind);
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if (find)
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{
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find->policy = policy;
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find->ciphers = ciphers;
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find->onlyAllowed = onlyAllowed;
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find->index = -1;
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}
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return find;
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}
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long sec_CipherFindNext(SECCipherFind *find)
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{
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char *policy;
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long rv = -1;
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secCPStruct *policies = (secCPStruct *) find->policy;
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long *ciphers = (long *) find->ciphers;
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long numCiphers = policies->num_ciphers;
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find->index++;
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while((find->index < numCiphers) && (rv == -1))
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{
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/* Translate index to cipher. */
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rv = ciphers[find->index];
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/* If we're only looking for allowed ciphers, and if this
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cipher isn't allowed, loop around.*/
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if (find->onlyAllowed)
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{
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/* Find the appropriate policy flag. */
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policy = (&(policies->begin_ciphers)) + find->index + 1;
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/* If this cipher isn't allowed by policy, continue. */
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if (! (*policy))
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{
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rv = -1;
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find->index++;
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}
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}
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}
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return rv;
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}
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char sec_IsCipherAllowed(long cipher, secCPStruct *policies,
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long *ciphers)
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{
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char result = SEC_CIPHER_NOT_ALLOWED; /* our default answer */
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long numCiphers = policies->num_ciphers;
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char *policy;
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int i;
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/* Convert the cipher number into a policy flag location. */
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for (i=0, policy=(&(policies->begin_ciphers) + 1);
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i<numCiphers;
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i++, policy++)
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{
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if (cipher == ciphers[i])
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break;
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}
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if (i < numCiphers)
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{
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/* Found the cipher, get the policy value. */
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result = *policy;
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}
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return result;
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}
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void sec_CipherFindEnd(SECCipherFind *find)
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{
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PR_FREEIF(find);
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}
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