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Diffstat (limited to '')
-rw-r--r-- | security/nss/lib/util/secplcy.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/security/nss/lib/util/secplcy.c b/security/nss/lib/util/secplcy.c new file mode 100644 index 0000000000..0c784d0553 --- /dev/null +++ b/security/nss/lib/util/secplcy.c @@ -0,0 +1,83 @@ +/* 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); +} |