/* * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved. * * The contents of this file constitute Original Code as defined in and are * subject to the Apple Public Source License Version 1.2 (the 'License'). * You may not use this file except in compliance with the License. Please obtain * a copy of the License at http://www.apple.com/publicsource and read it before * using this file. * * This Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the * specific language governing rights and limitations under the License. */ // file: .../c++-lib/src/asn-int.C - methods for AsnInt (ASN.1 INTEGER) class // // MS 92/06/16 // Copyright (C) 1992 Michael Sample and the University of British Columbia // // This library is free software; you can redistribute it and/or // modify it provided that this copyright/license information is retained // in original form. // // If you modify this file, you must clearly indicate your changes. // // This source code is distributed in the hope that it will be // useful, but WITHOUT ANY WARRANTY; without even the implied warranty // of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. // // $Header: /cvs/Darwin/Security/SecuritySNACCRuntime/c++-lib/c++/asn-int.cpp,v 1.3 2002/03/21 05:38:44 dmitch Exp $ // $Log: asn-int.cpp,v $ // Revision 1.3 2002/03/21 05:38:44 dmitch // Radar 2868524: no more setjmp/longjmp in SNACC-generated code. // // Revision 1.2.44.1 2002/03/20 00:36:49 dmitch // Radar 2868524: SNACC-generated code now uses throw/catch instead of setjmp/longjmp. // // Revision 1.2 2001/06/27 23:09:14 dmitch // Pusuant to Radar 2664258, avoid all cerr-based output in NDEBUG configuration. // // Revision 1.1.1.1 2001/05/18 23:14:05 mb // Move from private repository to open source repository // // Revision 1.2 2001/05/05 00:59:17 rmurphy // Adding darwin license headers // // Revision 1.1 2000/06/15 18:44:57 dmitch // These snacc-generated source files are now checked in to allow cross-platform build. // // Revision 1.2 2000/06/08 20:05:35 dmitch // Mods for X port. These files are actually machine generated and probably don't need to be in CVS.... // // Revision 1.1.1.1 2000/03/09 01:00:06 rmurphy // Base Fortissimo Tree // // Revision 1.2 1999/03/21 02:07:36 mb // Added Copy to every AsnType. // // Revision 1.1 1999/02/25 05:21:51 mb // Added snacc c++ library // // Revision 1.7 1997/02/28 13:39:45 wan // Modifications collected for new version 1.3: Bug fixes, tk4.2. // // Revision 1.6 1995/09/07 18:55:50 rj // (unsigned) long int replaced by newly introduced Asn(U)IntType at a lot of places. // they shall provide 32 bit integer types on all platforms. // // Revision 1.5 1995/07/24 20:17:32 rj // #if TCL ... #endif wrapped into #if META ... #endif // // call constructor with additional pdu and create arguments. // // changed `_' to `-' in file names. // // Revision 1.4 1995/02/18 16:48:05 rj // denote a long if we want a long // // Revision 1.3 1994/10/08 04:18:23 rj // code for meta structures added (provides information about the generated code itself). // // code for Tcl interface added (makes use of the above mentioned meta code). // // virtual inline functions (the destructor, the Clone() function, BEnc(), BDec() and Print()) moved from inc/*.h to src/*.C because g++ turns every one of them into a static non-inline function in every file where the .h file gets included. // // made Print() const (and some other, mainly comparison functions). // // several `unsigned long int' turned into `size_t'. // // Revision 1.2 1994/08/28 10:01:12 rj // comment leader fixed. // // Revision 1.1 1994/08/28 09:20:59 rj // first check-in. for a list of changes to the snacc-1.1 distribution please refer to the ChangeLog. #include "asn-config.h" #include "asn-len.h" #include "asn-tag.h" #include "asn-type.h" #include "asn-int.h" AsnType *AsnInt::Clone() const { return new AsnInt; } AsnType *AsnInt::Copy() const { return new AsnInt (*this); } // Encodes BER content of this AsnInt to the given buffer. // Returns the number of octets written to the buffer. AsnLen AsnInt::BEncContent (BUF_TYPE b) { AsnLen len; unsigned i; AsnUIntType mask; AsnUIntType dataCpy; #define MASK (0x7f80L << ((sizeof (AsnIntType) - 2) * 8)) dataCpy = value; /* * calculate encoded length of the integer (content) */ mask = MASK; if ((AsnIntType)dataCpy < 0) for (len = sizeof (AsnIntType); len > 1; --len) { if ((dataCpy & mask) == mask) mask >>= 8; else break; } else for (len = sizeof (AsnIntType); len > 1; --len) { if ((dataCpy & mask) == 0) mask >>= 8; else break; } /* * write the BER integer */ for (i = 0; i < len; i++) { b.PutByteRvs (dataCpy); dataCpy >>= 8; } return len; } // Decodes the content of a BER INTEGER from the given buffer. // The value is placed in this object. tagId is ignored. // bytesDecoded is incremented by the number of bytes read for this // integer value. void AsnInt::BDecContent (BUF_TYPE b, AsnTag tagId, AsnLen elmtLen, AsnLen &bytesDecoded, ENV_TYPE env) { unsigned i; AsnUIntType byte; if (elmtLen > sizeof (AsnIntType)) { Asn1Error << "AsnInt::BDecContent: ERROR - integer is too big to decode." << endl; #if SNACC_EXCEPTION_ENABLE SnaccExcep::throwMe(-7); #else longjmp (env, -7); #endif } /* * look at integer value */ byte = (AsnUIntType) b.GetByte(); if (byte & 0x80) /* top bit of first byte is sign bit */ value = (-1 << 8) | byte; else value = byte; /* * write from buffer into AsnIntType */ for (i = 1; i < elmtLen; i++) value = (value << 8) | (AsnUIntType)(b.GetByte()); bytesDecoded += elmtLen; if (b.ReadError()) { Asn1Error << "AsnInt::BDecContent: ERROR - decoded past end of data." << endl; #if SNACC_EXCEPTION_ENABLE SnaccExcep::throwMe(-8); #else longjmp (env, -8); #endif } } /* AsnInt::BDecContent */ AsnLen AsnInt::BEnc (BUF_TYPE b) { AsnLen l; l = BEncContent (b); BEncDefLenTo127 (b, l); l++; l += BEncTag1 (b, UNIV, PRIM, INTEGER_TAG_CODE); return l; } void AsnInt::BDec (BUF_TYPE b, AsnLen &bytesDecoded, ENV_TYPE env) { AsnLen elmtLen; if (BDecTag (b, bytesDecoded, env) != MAKE_TAG_ID (UNIV, PRIM, INTEGER_TAG_CODE)) { Asn1Error << "AsnInt::BDec: ERROR tag on INTEGER is wrong." << endl; #if SNACC_EXCEPTION_ENABLE SnaccExcep::throwMe(-53); #else longjmp (env,-53); #endif } elmtLen = BDecLen (b, bytesDecoded, env); BDecContent (b, MAKE_TAG_ID (UNIV, PRIM, INTEGER_TAG_CODE), elmtLen, bytesDecoded, env); } void AsnInt::Print (ostream &os) const { #ifndef NDEBUG os << value; #endif } #if META const AsnIntTypeDesc AsnInt::_desc (NULL, NULL, false, AsnTypeDesc::INTEGER, NULL, NULL); const AsnTypeDesc *AsnInt::_getdesc() const { return &_desc; } #if TCL #define RETURN_NAME_INSTEAD_OF_VALUE 0 int AsnInt::TclGetVal (Tcl_Interp *interp) const { #if RETURN_NAME_INSTEAD_OF_VALUE const AsnNameDesc *n = _getdesc()->getnames(); if (n) for (; n->name; n++) if (n->value == value) { Tcl_SetResult (interp, n->name, TCL_STATIC); return TCL_OK; } #endif char buf[32]; sprintf (buf, "%d", value); Tcl_SetResult (interp, buf, TCL_VOLATILE); return TCL_OK; } int AsnInt::TclSetVal (Tcl_Interp *interp, const char *valstr) { const AsnNameDesc *n = _getdesc()->getnames(); if (n) for (; n->name; n++) if (!strcmp (n->name, valstr)) { value = n->value; return TCL_OK; } int valval; if (Tcl_GetInt (interp, (char*)valstr, &valval) != TCL_OK) return TCL_ERROR; value = valval; return TCL_OK; } #endif /* TCL */ #endif /* META */