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/*
* NSS utility functions
*
* 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 <stdio.h>
#include <string.h>
#include "prerror.h"
#include "secitem.h"
#include "prnetdb.h"
#include "cert.h"
#include "nspr.h"
#include "secder.h"
#include "keyhi.h"
#include "nss.h"
#include "ssl.h"
#include "pk11func.h" /* for PK11_ function calls */
#include "sslimpl.h"
/*
* This callback used by SSL to pull client certificate upon
* server request
*/
SECStatus
NSS_GetClientAuthData(void *arg,
PRFileDesc *fd,
struct CERTDistNamesStr *caNames,
struct CERTCertificateStr **pRetCert,
struct SECKEYPrivateKeyStr **pRetKey)
{
CERTCertificate *cert = NULL;
SECKEYPrivateKey *privkey = NULL;
char *chosenNickName = (char *)arg; /* CONST */
SECStatus rv = SECFailure;
sslSocket *ss = ssl_FindSocket(fd);
if (!ss) {
return SECFailure;
}
void *proto_win = SSL_RevealPinArg(fd);
PRTime now = ssl_Time(ss);
if (chosenNickName) {
cert = CERT_FindUserCertByUsage(CERT_GetDefaultCertDB(),
chosenNickName, certUsageSSLClient,
PR_FALSE, proto_win);
if (cert) {
privkey = PK11_FindKeyByAnyCert(cert, proto_win);
if (privkey) {
rv = SECSuccess;
} else {
CERT_DestroyCertificate(cert);
}
}
} else { /* no name given, automatically find the right cert. */
CERTCertNicknames *names;
int i;
names = CERT_GetCertNicknames(CERT_GetDefaultCertDB(),
SEC_CERT_NICKNAMES_USER, proto_win);
if (names != NULL) {
for (i = 0; i < names->numnicknames; i++) {
cert = CERT_FindUserCertByUsage(CERT_GetDefaultCertDB(),
names->nicknames[i], certUsageSSLClient,
PR_FALSE, proto_win);
if (!cert)
continue;
/* Only check unexpired certs */
if (CERT_CheckCertValidTimes(cert, now, PR_TRUE) !=
secCertTimeValid) {
CERT_DestroyCertificate(cert);
continue;
}
rv = NSS_CmpCertChainWCANames(cert, caNames);
if (rv == SECSuccess) {
privkey =
PK11_FindKeyByAnyCert(cert, proto_win);
if (privkey)
break;
}
rv = SECFailure;
CERT_DestroyCertificate(cert);
}
CERT_FreeNicknames(names);
}
}
if (rv == SECSuccess) {
*pRetCert = cert;
*pRetKey = privkey;
}
return rv;
}