1  /*
  2   * Copyright (c) 2008 Kungliga Tekniska Högskolan
  3   * (Royal Institute of Technology, Stockholm, Sweden).
  4   * All rights reserved.
  5   *
  6   * Portions Copyright (c) 2009 - 2010 Apple Inc. All rights reserved.
  7   *
  8   * Redistribution and use in source and binary forms, with or without
  9   * modification, are permitted provided that the following conditions
 10   * are met:
 11   *
 12   * 1. Redistributions of source code must retain the above copyright
 13   *    notice, this list of conditions and the following disclaimer.
 14   *
 15   * 2. Redistributions in binary form must reproduce the above copyright
 16   *    notice, this list of conditions and the following disclaimer in the
 17   *    documentation and/or other materials provided with the distribution.
 18   *
 19   * 3. Neither the name of KTH nor the names of its contributors may be
 20   *    used to endorse or promote products derived from this software without
 21   *    specific prior written permission.
 22   *
 23   * THIS SOFTWARE IS PROVIDED BY KTH AND ITS CONTRIBUTORS ``AS IS'' AND ANY
 24   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 25   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 26   * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KTH OR ITS CONTRIBUTORS BE
 27   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 28   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 29   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 30   * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 31   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 32   * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 33   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 34   */
 35  
 36  #include "config.h"
 37  
 38  #include <stdio.h>
 39  #include <stdlib.h>
 40  #include <string.h>
 41  #include <errno.h>
 42  
 43  #include <krb5-types.h>
 44  
 45  #include <wind.h>
 46  #include <roken.h>
 47  #include <base64.h>
 48  
 49  #include <heimbase.h>
 50  
 51  #include "heimscram.h"
 52  
 53  #include <ntlm_err.h>
 54  #include "crypto-headers.h"
 55  
 56  #ifndef __APPLE_TARGET_EMBEDDED__
 57  #include <CommonCrypto/CommonKeyDerivation.h>
 58  #endif
 59  
 60  
 61  struct heim_scram_pair {
 62      char type;
 63      heim_scram_data data;
 64  };
 65  
 66  struct heim_scram_pairs {
 67      int flags;
 68  #define SCRAM_PAIR_ALLOCATED 1
 69  #define SCRAM_ARRAY_ALLOCATED 2
 70  #define SCRAM_BINDINGS_YES 4
 71  #define SCRAM_BINDINGS_NO 8
 72      struct heim_scram_pair *val;
 73      size_t len;
 74  };
 75  
 76  typedef struct heim_scram_pairs heim_scram_pairs;
 77  
 78  struct heim_scram {
 79      struct heim_scram_method_desc *method;
 80      enum { CLIENT, SERVER } type;
 81      heim_scram_data client1;
 82      heim_scram_data server1;
 83      /* generated */
 84      heim_scram_data nonce;
 85  
 86      /* server */
 87      struct heim_scram_server *server;
 88      void *ctx;
 89  
 90      heim_scram_data user;
 91  
 92      /* output */
 93      heim_scram_data ClientProof;
 94      heim_scram_data ServerSignature;
 95      heim_scram_data SessionKey;
 96  };
 97  
 98  #include "heimscram-protos.h"
 99  
100  int
101  _heim_scram_parse(heim_scram_data *data, heim_scram_pairs **pd);
102  
103  int
104  _heim_scram_unparse (
105  	heim_scram_pairs */*d*/,
106  	heim_scram_data */*out*/);
107  
108  void
109  _heim_scram_pairs_free (heim_scram_pairs */*d*/);