// Copyright (C) 2002 Microsoft Corporation// All rights reserved.//// THIS CODE AND INFORMATION IS PROVIDED "AS IS"// WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED// OR IMPLIED, INCLUDING BUT NOT LIMITED// TO THE IMPLIED WARRANTIES OF MERCHANTIBILITY// AND/OR FITNESS FOR A PARTICULAR PURPOSE.//// Date    - 10/08/2002// Author  - Sanj Surati///////////////////////////////////////////////////////////////// DERPARSE.H//// SPNEGO Token Handler Header File//// Contains the definitions required to properly parse the// SPNEGO DER encoding.///////////////////////////////////////////////////////////////#ifndef __DERPARSE_H__#define __DERPARSE_H__// C++ Specific#if defined(__cplusplus)extern "C"{#endif/* Identifier Types */#define  IDENTIFIER_MASK               0xC0  // Bits 7 and 8#define  IDENTIFIER_UNIVERSAL          0x00  // 00 = universal#define  IDENTIFIER_APPLICATION        0x40  // 01 = application#define  IDENTIFIER_CONTEXT_SPECIFIC   0x80  // 10 = context specific#define  IDENTIFIER_PRIVATE            0xC0  // 11 = Private/* Encoding type */#define FORM_MASK       0x20    /* Bit 6 */#define PRIMITIVE       0x00    /* 0 = primitive */#define CONSTRUCTED     0x20    /* 1 = constructed *//* Universal tags */#define TAG_MASK        0x1F    /* Bits 5 - 1 */#define BOOLEAN         0x01    /*  1: TRUE or FALSE */#define INTEGER         0x02    /*  2: Arbitrary precision integer */#define BITSTRING       0x03    /*  2: Sequence of bits */#define OCTETSTRING     0x04    /*  4: Sequence of bytes */#define NULLTAG         0x05    /*  5: NULL */#define OID             0x06    /*  6: Object Identifier (numeric sequence) */#define OBJDESCRIPTOR   0x07    /*  7: Object Descriptor (human readable) */#define EXTERNAL        0x08    /*  8: External / Instance Of */#define REAL            0x09    /*  9: Real (Mantissa * Base^Exponent) */#define ENUMERATED      0x0A    /* 10: Enumerated */#define EMBEDDED_PDV    0x0B    /* 11: Embedded Presentation Data Value */#define SEQUENCE        0x10    /* 16: Constructed Sequence / Sequence Of */#define SET             0x11    /* 17: Constructed Set / Set Of */#define NUMERICSTR      0x12    /* 18: Numeric String (digits only) */#define PRINTABLESTR    0x13    /* 19: Printable String */#define T61STR          0x14    /* 20: T61 String (Teletex) */#define VIDEOTEXSTR     0x15    /* 21: Videotex String */#define IA5STR          0x16    /* 22: IA5 String */#define UTCTIME         0x17    /* 23: UTC Time */#define GENERALIZEDTIME 0x18    /* 24: Generalized Time */#define GRAPHICSTR      0x19    /* 25: Graphic String */#define VISIBLESTR      0x1A    /* 26: Visible String (ISO 646) */#define GENERALSTR      0x1B    /* 27: General String */#define UNIVERSALSTR    0x1C    /* 28: Universal String */#define BMPSTR          0x1E    /* 30: Basic Multilingual Plane String *//* Length encoding */#define LEN_XTND  0x80      /* Indefinite or long form */#define LEN_MASK  0x7f      /* Bits 7 - 1 *///// SPNEGO Token Parsing Constants//// Fixed Length of NegTokenInit ReqFlags field#define  SPNEGO_NEGINIT_MAXLEN_REQFLAGS   2// Difference in bits for ReqFlags token#define  SPNEGO_NEGINIT_REQFLAGS_BITDIFF  1// Fixed Length of NegTokenTarg NegResult field#define  SPNEGO_NEGTARG_MAXLEN_NEGRESULT  1// Application Specific Construct - Always at the start of a NegTokenInit#define  SPNEGO_NEGINIT_APP_CONSTRUCT     ( IDENTIFIER_APPLICATION | CONSTRUCTED ) // 0x60// Constructed Sequence token - after the actual token identifier token#define  SPNEGO_CONSTRUCTED_SEQUENCE      ( SEQUENCE | CONSTRUCTED )// MechList Type Identifier#define  SPNEGO_MECHLIST_TYPE      ( SEQUENCE | CONSTRUCTED | OID )//// NegTokenInit - Token Identifier and Elements//// NegTokenInit - 0xa0#define  SPNEGO_NEGINIT_TOKEN_IDENTIFIER  ( IDENTIFIER_CONTEXT_SPECIFIC | CONSTRUCTED |  \                                             SPNEGO_TOKEN_INIT )// Structure elements for NegTokenInit#define  SPNEGO_NEGINIT_MECHTYPES   0x0   // MechTypes is element 0#define  SPNEGO_NEGINIT_REQFLAGS    0x1   // ReqFlags is element 1#define  SPNEGO_NEGINIT_MECHTOKEN   0x2   // MechToken is element 2#define  SPNEGO_NEGINIT_MECHLISTMIC 0x3   // MechListMIC is element 3// MechTypes element is 0xa0#define  SPNEGO_NEGINIT_ELEMENT_MECHTYPES    ( IDENTIFIER_CONTEXT_SPECIFIC | CONSTRUCTED |  \                                                SPNEGO_NEGINIT_MECHTYPES )// ReqFlags element is 0xa1#define  SPNEGO_NEGINIT_ELEMENT_REQFLAGS     ( IDENTIFIER_CONTEXT_SPECIFIC | CONSTRUCTED |  \                                                SPNEGO_NEGINIT_REQFLAGS )// MechToken element is 0xa2#define  SPNEGO_NEGINIT_ELEMENT_MECHTOKEN    ( IDENTIFIER_CONTEXT_SPECIFIC | CONSTRUCTED |  \                                                SPNEGO_NEGINIT_MECHTOKEN )// MechListMIC element is 0xa3#define  SPNEGO_NEGINIT_ELEMENT_MECHLISTMIC  ( IDENTIFIER_CONTEXT_SPECIFIC | CONSTRUCTED |  \                                                SPNEGO_NEGINIT_MECHLISTMIC )//// NegTokenTarg - Token Identifier and Elements//// NegTokenTarg - 0xa1#define  SPNEGO_NEGTARG_TOKEN_IDENTIFIER  ( IDENTIFIER_CONTEXT_SPECIFIC | CONSTRUCTED |  \                                             SPNEGO_TOKEN_TARG )// Structure elements for NegTokenTarg#define  SPNEGO_NEGTARG_NEGRESULT         0x0   // NegResult is element 0#define  SPNEGO_NEGTARG_SUPPORTEDMECH     0x1   // SupportedMech is element 1#define  SPNEGO_NEGTARG_RESPONSETOKEN     0x2   // ResponseToken is element 2#define  SPNEGO_NEGTARG_MECHLISTMIC       0x3   // MechListMIC is element 3// NegResult element is 0xa0#define  SPNEGO_NEGTARG_ELEMENT_NEGRESULT          ( IDENTIFIER_CONTEXT_SPECIFIC | CONSTRUCTED |  \                                                      SPNEGO_NEGTARG_NEGRESULT )// SupportedMech element is 0xa1#define  SPNEGO_NEGTARG_ELEMENT_SUPPORTEDMECH      ( IDENTIFIER_CONTEXT_SPECIFIC | CONSTRUCTED |  \                                                      SPNEGO_NEGTARG_SUPPORTEDMECH )// ResponseToken element is 0xa2#define  SPNEGO_NEGTARG_ELEMENT_RESPONSETOKEN      ( IDENTIFIER_CONTEXT_SPECIFIC | CONSTRUCTED |  \                                                      SPNEGO_NEGTARG_RESPONSETOKEN )// MechListMIC element is 0xa3#define  SPNEGO_NEGTARG_ELEMENT_MECHLISTMIC        ( IDENTIFIER_CONTEXT_SPECIFIC | CONSTRUCTED |  \                                                      SPNEGO_NEGTARG_MECHLISTMIC )//// Defines a GSS Mechanism OID.  We keep a single static array// of these which we'll use for validation/searches/parsing.//typedef struct _mechOID{   unsigned char*    ucOid;            // Byte representation of OID   int               iLen;             // Length of the OID, length and identifier   int               iActualDataLen;   // Length of the actual OID    SPNEGO_MECH_OID   eMechanismOID;     // Which OID is this?   } MECH_OID;//// ASN Der functions//int ASNDerGetLength( unsigned char* pbLengthData, long nBoundaryLength, long* pnLength,                    long* pnNumLengthBytes );int ASNDerCheckToken( unsigned char* pbTokenData, unsigned char nToken,                        long nCheckLength, long nBoundaryLength, long* pnLength,                        long* pnTokenLength );int ASNDerCheckOID( unsigned char* pbTokenData, SPNEGO_MECH_OID nMechOID, long nBoundaryLength,                     long* pnTokenLength );int ASNDerCalcNumLengthBytes( long nLength );long ASNDerCalcTokenLength( long nLength, long nDataLength );long ASNDerCalcElementLength( long nDataLength, long* pnInternalLength );long ASNDerCalcMechListLength( SPNEGO_MECH_OID mechoid, long* pnInternalLength );int ASNDerWriteLength( unsigned char* pbData, long nLength );int ASNDerWriteToken( unsigned char* pbData, unsigned char ucType,                     unsigned char* pbTokenValue, long nLength );int ASNDerWriteOID( unsigned char* pbData, SPNEGO_MECH_OID eMechOID );long ASNDerWriteMechList( unsigned char* pbData, SPNEGO_MECH_OID mechoid );int ASNDerWriteElement( unsigned char* pbData, unsigned char ucElementSequence,                        unsigned char ucType, unsigned char* pbTokenValue, long nLength );   // C++ Specific#if defined(__cplusplus)}#endif#endif