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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "secplcy.h"
#include "prmem.h"
SECCipherFind *
sec_CipherFindInit(PRBool onlyAllowed,
secCPStruct *policy,
long *ciphers)
{
SECCipherFind *find = PR_NEWZAP(SECCipherFind);
if (find) {
find->policy = policy;
find->ciphers = ciphers;
find->onlyAllowed = onlyAllowed;
find->index = -1;
}
return find;
}
long
sec_CipherFindNext(SECCipherFind *find)
{
char *policy;
long rv = -1;
secCPStruct *policies = (secCPStruct *)find->policy;
long *ciphers = (long *)find->ciphers;
long numCiphers = policies->num_ciphers;
find->index++;
while ((find->index < numCiphers) && (rv == -1)) {
/* Translate index to cipher. */
rv = ciphers[find->index];
/* If we're only looking for allowed ciphers, and if this
cipher isn't allowed, loop around.*/
if (find->onlyAllowed) {
/* Find the appropriate policy flag. */
policy = (&(policies->begin_ciphers)) + find->index + 1;
/* If this cipher isn't allowed by policy, continue. */
if (!(*policy)) {
rv = -1;
find->index++;
}
}
}
return rv;
}
char
sec_IsCipherAllowed(long cipher, secCPStruct *policies,
long *ciphers)
{
char result = SEC_CIPHER_NOT_ALLOWED; /* our default answer */
long numCiphers = policies->num_ciphers;
char *policy;
int i;
/* Convert the cipher number into a policy flag location. */
for (i = 0, policy = (&(policies->begin_ciphers) + 1);
i < numCiphers;
i++, policy++) {
if (cipher == ciphers[i])
break;
}
if (i < numCiphers) {
/* Found the cipher, get the policy value. */
result = *policy;
}
return result;
}
void
sec_CipherFindEnd(SECCipherFind *find)
{
PR_FREEIF(find);
}
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