зеркало из https://github.com/mozilla/gecko-dev.git
84 строки
2.1 KiB
C
84 строки
2.1 KiB
C
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "secplcy.h"
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#include "prmem.h"
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SECCipherFind *
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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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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
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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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/* 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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/* 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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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
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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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if (cipher == ciphers[i])
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break;
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}
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if (i < numCiphers) {
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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
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sec_CipherFindEnd(SECCipherFind *find)
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{
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PR_FREEIF(find);
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}
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