michael@0: /*
michael@0:  * NSS utility functions
michael@0:  *
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include <stdio.h>
michael@0: #include <string.h>
michael@0: #include "prerror.h"
michael@0: #include "secitem.h"
michael@0: #include "prnetdb.h"
michael@0: #include "cert.h"
michael@0: #include "nspr.h"
michael@0: #include "secder.h"
michael@0: #include "key.h"
michael@0: #include "nss.h"
michael@0: #include "ssl.h"
michael@0: #include "pk11func.h"	/* for PK11_ function calls */
michael@0: 
michael@0: /*
michael@0:  * This callback used by SSL to pull client sertificate upon
michael@0:  * server request
michael@0:  */
michael@0: SECStatus 
michael@0: NSS_GetClientAuthData(void *                       arg, 
michael@0:                       PRFileDesc *                 socket, 
michael@0: 		      struct CERTDistNamesStr *    caNames, 
michael@0: 		      struct CERTCertificateStr ** pRetCert, 
michael@0: 		      struct SECKEYPrivateKeyStr **pRetKey)
michael@0: {
michael@0:   CERTCertificate *  cert = NULL;
michael@0:   SECKEYPrivateKey * privkey = NULL;
michael@0:   char *             chosenNickName = (char *)arg;    /* CONST */
michael@0:   void *             proto_win  = NULL;
michael@0:   SECStatus          rv         = SECFailure;
michael@0:   
michael@0:   proto_win = SSL_RevealPinArg(socket);
michael@0:   
michael@0:   if (chosenNickName) {
michael@0:     cert = CERT_FindUserCertByUsage(CERT_GetDefaultCertDB(),
michael@0:                                     chosenNickName, certUsageSSLClient,
michael@0:                                     PR_FALSE, proto_win);	
michael@0:     if ( cert ) {
michael@0:       privkey = PK11_FindKeyByAnyCert(cert, proto_win);
michael@0:       if ( privkey ) {
michael@0: 	rv = SECSuccess;
michael@0:       } else {
michael@0: 	CERT_DestroyCertificate(cert);
michael@0:       }
michael@0:     }
michael@0:   } else { /* no name given, automatically find the right cert. */
michael@0:     CERTCertNicknames * names;
michael@0:     int                 i;
michael@0:       
michael@0:     names = CERT_GetCertNicknames(CERT_GetDefaultCertDB(),
michael@0: 				  SEC_CERT_NICKNAMES_USER, proto_win);
michael@0:     if (names != NULL) {
michael@0:       for (i = 0; i < names->numnicknames; i++) {
michael@0: 	cert = CERT_FindUserCertByUsage(CERT_GetDefaultCertDB(),
michael@0:                             names->nicknames[i], certUsageSSLClient,
michael@0:                             PR_FALSE, proto_win);	
michael@0: 	if ( !cert )
michael@0: 	  continue;
michael@0: 	/* Only check unexpired certs */
michael@0: 	if (CERT_CheckCertValidTimes(cert, PR_Now(), PR_TRUE) != 
michael@0: 	    secCertTimeValid ) {
michael@0: 	  CERT_DestroyCertificate(cert);
michael@0: 	  continue;
michael@0: 	}
michael@0: 	rv = NSS_CmpCertChainWCANames(cert, caNames);
michael@0: 	if ( rv == SECSuccess ) {
michael@0: 	  privkey = PK11_FindKeyByAnyCert(cert, proto_win);
michael@0: 	  if ( privkey )
michael@0: 	    break;
michael@0: 	}
michael@0: 	rv = SECFailure;
michael@0: 	CERT_DestroyCertificate(cert);
michael@0:       } 
michael@0:       CERT_FreeNicknames(names);
michael@0:     }
michael@0:   }
michael@0:   if (rv == SECSuccess) {
michael@0:     *pRetCert = cert;
michael@0:     *pRetKey  = privkey;
michael@0:   }
michael@0:   return rv;
michael@0: }
michael@0: