src/src/auths/auth-spa.h

   1 /*************************************************
   2 *     Exim - an Internet mail transport agent    *
   3 *************************************************/
   4
   5 /*
   6  * This file provides the necessary methods for authenticating with
   7  * Microsoft's Secure Password Authentication.
   8
   9  * All the code used here was torn by Marc Prud'hommeaux out of the
  10  * Samba project (by Andrew Tridgell, Jeremy Allison, and others).
  11  */
  12
  13 /* December 2004: The spa_base64_to_bits() function has no length checking in
  14 it. I have added a check. PH */
  15
  16 /* It seems that some systems have existing but different definitions of some
  17 of the following types. I received a complaint about "int16" causing
  18 compilation problems. So I (PH) have renamed them all, to be on the safe side.
  19
  20 typedef signed short int16;
  21 typedef unsigned short uint16;
  22 typedef unsigned uint32;
  23 typedef unsigned char  uint8;
  24 */
  25
  26 typedef signed short int16x;
  27 typedef unsigned short uint16x;
  28 typedef unsigned uint32x;
  29 typedef unsigned char  uint8x;
  30
  31 typedef struct
  32 {
  33        uint16x         len;
  34        uint16x         maxlen;
  35        uint32x         offset;
  36 } SPAStrHeader;
  37
  38 typedef struct
  39 {
  40        char         ident[8];
  41        uint32x         msgType;
  42        SPAStrHeader    uDomain;
  43        uint32x         flags;
  44        uint8x         challengeData[8];
  45        uint8x         reserved[8];
  46        SPAStrHeader    emptyString;
  47        uint8x         buffer[1024];
  48        uint32x         bufIndex;
  49 } SPAAuthChallenge;
  50
  51
  52 typedef struct
  53 {
  54        char         ident[8];
  55        uint32x         msgType;
  56        uint32x         flags;
  57        SPAStrHeader    user;
  58        SPAStrHeader    domain;
  59        uint8x         buffer[1024];
  60        uint32x         bufIndex;
  61 } SPAAuthRequest;
  62
  63 typedef struct
  64 {
  65        char         ident[8];
  66        uint32x         msgType;
  67        SPAStrHeader    lmResponse;
  68        SPAStrHeader    ntResponse;
  69        SPAStrHeader    uDomain;
  70        SPAStrHeader    uUser;
  71        SPAStrHeader    uWks;
  72        SPAStrHeader    sessionKey;
  73        uint32x         flags;
  74        uint8x         buffer[1024];
  75        uint32x         bufIndex;
  76 } SPAAuthResponse;
  77
  78 #define spa_request_length(ptr) (((ptr)->buffer - (uint8x*)(ptr)) + (ptr)->bufIndex)
  79
  80 void spa_bits_to_base64 (unsigned char *, const unsigned char *, int);
  81 int spa_base64_to_bits(char *, int, const char *);
  82 void spa_build_auth_response (SPAAuthChallenge *challenge,
  83        SPAAuthResponse *response, char *user, char *password);
  84 void spa_build_auth_request (SPAAuthRequest *request, char *user,
  85        char *domain);
  86 extern void spa_smb_encrypt (unsigned char * passwd, unsigned char * c8,
  87                              unsigned char * p24);
  88 extern void spa_smb_nt_encrypt (unsigned char * passwd, unsigned char * c8,
  89                                 unsigned char * p24);
  90 extern char *unicodeToString(char *p, size_t len);
  91 extern void spa_build_auth_challenge(SPAAuthRequest *, SPAAuthChallenge *);
  92