root/net/third_party/nss/ssl/authcert.c

DEFINITIONS

1. NSS_GetClientAuthData

/*
 * 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 "key.h"
#include "nss.h"
#include "ssl.h"
#include "pk11func.h"   /* for PK11_ function calls */

/*
 * This callback used by SSL to pull client sertificate upon
 * server request
 */
SECStatus 
NSS_GetClientAuthData(void *                       arg, 
                      PRFileDesc *                 socket, 
                      struct CERTDistNamesStr *    caNames, 
                      struct CERTCertificateStr ** pRetCert, 
                      struct SECKEYPrivateKeyStr **pRetKey)
{
  CERTCertificate *  cert = NULL;
  SECKEYPrivateKey * privkey = NULL;
  char *             chosenNickName = (char *)arg;    /* CONST */
  void *             proto_win  = NULL;
  SECStatus          rv         = SECFailure;
  
  proto_win = SSL_RevealPinArg(socket);
  
  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, PR_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;
}