asner.h

开源代码的pwlib的1.10.0版本,使用openh323的1.18.0版本毕备

*/
class PASN_Integer : public PASN_ConstrainedObject
{
    PCLASSINFO(PASN_Integer, PASN_ConstrainedObject);
  public:
    PASN_Integer(unsigned val = 0);
    PASN_Integer(unsigned tag, TagClass tagClass, unsigned val = 0);

    PASN_Integer & operator=(unsigned value);
    operator unsigned() const { return value; }
    unsigned GetValue() const { return value; }
    void SetValue(unsigned v) { operator=(v); }

    virtual Comparison Compare(const PObject & obj) const;
    virtual PObject * Clone() const;
    virtual void PrintOn(ostream & strm) const;

    virtual void SetConstraintBounds(ConstraintType type, int lower, unsigned upper);
    virtual PString GetTypeAsString() const;
    virtual PINDEX GetDataLength() const;
    virtual BOOL Decode(PASN_Stream &);
    virtual void Encode(PASN_Stream &) const;

#ifdef P_INCLUDE_PER
    BOOL DecodePER(PPER_Stream & strm);
    void EncodePER(PPER_Stream & strm) const;
#endif

    BOOL IsUnsigned() const;

  protected:
    unsigned value;
};

struct PASN_Names{
    char * name;
    PINDEX value; 
};

/** Class for ASN Enumerated type.
*/
class PASN_Enumeration : public PASN_Object
{
    PCLASSINFO(PASN_Enumeration, PASN_Object);
  public:
    PASN_Enumeration(unsigned val = 0);
    PASN_Enumeration(unsigned tag,
                     TagClass tagClass,
                     unsigned nEnums = P_MAX_INDEX,
                     BOOL extendable = FALSE,
                     unsigned val = 0);
    PASN_Enumeration(unsigned tag,
                     TagClass tagClass,
                     unsigned nEnums,
                     BOOL extendable,
                     const PASN_Names * nameSpec,
                     unsigned namesCnt,
                     unsigned val = 0);

    PASN_Enumeration & operator=(unsigned v) { value = v; return *this; }
    operator unsigned() const { return value; }
    unsigned GetValue() const { return value; }
    void SetValue(unsigned v) { value = v; }

    unsigned GetMaximum() const { return maxEnumValue; }

    virtual Comparison Compare(const PObject & obj) const;
    virtual PObject * Clone() const;
    virtual void PrintOn(ostream & strm) const;

    virtual PString GetTypeAsString() const;
    virtual PINDEX GetDataLength() const;
    virtual BOOL Decode(PASN_Stream &);
    virtual void Encode(PASN_Stream &) const;

#ifdef P_INCLUDE_PER
    BOOL DecodePER(PPER_Stream & strm);
    void EncodePER(PPER_Stream & strm) const;
#endif

#ifdef P_INCLUDE_XER
    virtual BOOL DecodeXER(PXER_Stream & strm);
    virtual void EncodeXER(PXER_Stream & strm) const;
#endif

    PINDEX GetValueByName(PString name) const;
  protected:
    unsigned maxEnumValue;
    unsigned value;
    const PASN_Names *names;
    unsigned namesCount;   
};


/** Class for ASN floating point type.
*/
class PASN_Real : public PASN_Object
{
    PCLASSINFO(PASN_Real, PASN_Object);
  public:
    PASN_Real(double val = 0);
    PASN_Real(unsigned tag, TagClass tagClass, double val = 0);

    PASN_Real & operator=(double val) { value = val; return *this; }
    operator double() const { return value; }
    double GetValue() const { return value; }
    void SetValue(double v) { value = v; }

    virtual Comparison Compare(const PObject & obj) const;
    virtual PObject * Clone() const;
    virtual void PrintOn(ostream & strm) const;

    virtual PString GetTypeAsString() const;
    virtual PINDEX GetDataLength() const;
    virtual BOOL Decode(PASN_Stream &);
    virtual void Encode(PASN_Stream &) const;

  protected:
    double value;
};


/** Class for ASN Object Identifier type.
*/
class PASN_ObjectId : public PASN_Object
{
    PCLASSINFO(PASN_ObjectId, PASN_Object);
  public:
    PASN_ObjectId(const char * dotstr = NULL);
    PASN_ObjectId(unsigned tag, TagClass tagClass);

    PASN_ObjectId(const PASN_ObjectId & other);
    PASN_ObjectId & operator=(const PASN_ObjectId & other);

    PASN_ObjectId & operator=(const char * dotstr);
    PASN_ObjectId & operator=(const PString & dotstr);
    PASN_ObjectId & operator=(const PUnsignedArray & numbers);
    void SetValue(const PString & dotstr);
    void SetValue(const PUnsignedArray & numbers) { value = numbers; }
    void SetValue(const unsigned * numbers, PINDEX size);

    bool operator==(const char * dotstr) const;
    bool operator!=(const char * dotstr) const      { return !operator==(dotstr); }
    bool operator==(const PString & dotstr) const   { return  operator==((const char *)dotstr); }
    bool operator!=(const PString & dotstr) const   { return !operator==((const char *)dotstr); }
    bool operator==(const PASN_ObjectId & id) const { return value == id.value; }

    PINDEX GetSize() const { return value.GetSize(); }
    unsigned operator[](PINDEX idx) const { return value[idx]; }
    const PUnsignedArray & GetValue() const { return value; }
    PString AsString() const;

    virtual Comparison Compare(const PObject & obj) const;
    virtual PObject * Clone() const;
    virtual void PrintOn(ostream & strm) const;

    virtual PString GetTypeAsString() const;
    virtual PINDEX GetDataLength() const;
    virtual BOOL Decode(PASN_Stream &);
    virtual void Encode(PASN_Stream &) const;

    BOOL CommonDecode(PASN_Stream & strm, unsigned dataLen);
    void CommonEncode(PBYTEArray & eObjId) const;

  protected:
    PUnsignedArray value;
};


/** Class for ASN Bit String type.
*/
class PASN_BitString : public PASN_ConstrainedObject
{
    PCLASSINFO(PASN_BitString, PASN_ConstrainedObject);
  public:
    PASN_BitString(unsigned nBits = 0, const BYTE * buf = NULL);
    PASN_BitString(unsigned tag, TagClass tagClass, unsigned nBits = 0);

    PASN_BitString(const PASN_BitString & other);
    PASN_BitString & operator=(const PASN_BitString & other);

    void SetData(unsigned nBits, const PBYTEArray & bytes);
    void SetData(unsigned nBits, const BYTE * buf, PINDEX size = 0);

    const BYTE * GetDataPointer() const { return bitData; }

    unsigned GetSize() const { return totalBits; }
    BOOL SetSize(unsigned nBits);

    bool operator[](PINDEX bit) const;
    void Set(unsigned bit);
    void Clear(unsigned bit);
    void Invert(unsigned bit);

    virtual Comparison Compare(const PObject & obj) const;
    virtual PObject * Clone() const;
    virtual void PrintOn(ostream & strm) const;

    virtual void SetConstraintBounds(ConstraintType type, int lower, unsigned upper);
    virtual PString GetTypeAsString() const;
    virtual PINDEX GetDataLength() const;
    virtual BOOL Decode(PASN_Stream &);
    virtual void Encode(PASN_Stream &) const;

#ifdef P_INCLUDE_BER
    BOOL DecodeBER(PBER_Stream & strm, unsigned len);
    void EncodeBER(PBER_Stream & strm) const;
#endif

#ifdef P_INCLUDE_PER
    BOOL DecodePER(PPER_Stream & strm);
    void EncodePER(PPER_Stream & strm) const;
#endif

    BOOL DecodeSequenceExtensionBitmap(PPER_Stream & strm);
    void EncodeSequenceExtensionBitmap(PPER_Stream & strm) const;

  protected:
    unsigned totalBits;
    PBYTEArray bitData;
};


/** Class for ASN Octet String type.
*/
class PASN_OctetString : public PASN_ConstrainedObject
{
    PCLASSINFO(PASN_OctetString, PASN_ConstrainedObject);
  public:
    PASN_OctetString(const char * str = NULL, PINDEX size = 0);
    PASN_OctetString(unsigned tag, TagClass tagClass);

    PASN_OctetString(const PASN_OctetString & other);
    PASN_OctetString & operator=(const PASN_OctetString & other);

    PASN_OctetString & operator=(const char * str);
    PASN_OctetString & operator=(const PString & str);
    PASN_OctetString & operator=(const PBYTEArray & arr);
    void SetValue(const char * str) { operator=(str); }
    void SetValue(const PString & str) { operator=(str); }
    void SetValue(const PBYTEArray & arr) { operator=(arr); }
    void SetValue(const BYTE * data, PINDEX len);
    const PBYTEArray & GetValue() const { return value; }
    operator const PBYTEArray &() const { return value; }
    operator const BYTE *() const { return value; }
    PString AsString() const;
    BYTE operator[](PINDEX i) const { return value[i]; }
    BYTE & operator[](PINDEX i) { return value[i]; }
    BYTE * GetPointer(PINDEX sz = 0) { return value.GetPointer(sz); }
    PINDEX GetSize() const { return value.GetSize(); }
    BOOL SetSize(PINDEX newSize);

    virtual Comparison Compare(const PObject & obj) const;
    virtual PObject * Clone() const;
    virtual void PrintOn(ostream & strm) const;

    virtual void SetConstraintBounds(ConstraintType type, int lower, unsigned upper);
    virtual PString GetTypeAsString() const;
    virtual PINDEX GetDataLength() const;
    virtual BOOL Decode(PASN_Stream &);
    virtual void Encode(PASN_Stream &) const;

#ifdef P_INCLUDE_PER
    BOOL DecodePER(PPER_Stream & strm);
    void EncodePER(PPER_Stream & strm) const;
#endif

    BOOL DecodeSubType(PASN_Object &) const;
    void EncodeSubType(const PASN_Object &);

  protected:
    PBYTEArray value;
};


/** Base class for ASN String types.
*/
class PASN_ConstrainedString : public PASN_ConstrainedObject
{
    PCLASSINFO(PASN_ConstrainedString, PASN_ConstrainedObject);
  public:
    PASN_ConstrainedString & operator=(const char * str);
    PASN_ConstrainedString & operator=(const PString & str) { return operator=((const char *)str); }
    operator const PString &() const { return value; }
    const PString & GetValue() const { return value; }
    void SetValue(const char * v) { operator=(v); }
    void SetValue(const PString & v) { operator=(v); }
    char operator[](PINDEX idx) const { return value[idx]; }

    void SetCharacterSet(ConstraintType ctype, const char * charSet);
    void SetCharacterSet(ConstraintType ctype, unsigned firstChar = 0, unsigned lastChar = 255);
    void SetCharacterSet(const char * charSet, PINDEX size, ConstraintType ctype);

    virtual Comparison Compare(const PObject & obj) const;
    virtual void PrintOn(ostream & strm) const;

    virtual void SetConstraintBounds(ConstraintType type, int lower, unsigned upper);
    virtual PINDEX GetDataLength() const;
    virtual BOOL Decode(PASN_Stream &);
    virtual void Encode(PASN_Stream &) const;

#ifdef P_INCLUDE_BER
    BOOL DecodeBER(PBER_Stream & strm, unsigned len);
    void EncodeBER(PBER_Stream & strm) const;
#endif

#ifdef P_INCLUDE_PER
    BOOL DecodePER(PPER_Stream & strm);
    void EncodePER(PPER_Stream & strm) const;
#endif

  protected:
    PASN_ConstrainedString(const char * canonicalSet, PINDEX setSize,
                           unsigned tag, TagClass tagClass);

    PString value;
    PCharArray characterSet;
    const char * canonicalSet;
    PINDEX canonicalSetSize;
    unsigned canonicalSetBits;
    unsigned charSetUnalignedBits;
    unsigned charSetAlignedBits;
};


#define DECLARE_STRING_CLASS(name) \
  class PASN_##name##String : public PASN_ConstrainedString { \
    PCLASSINFO(PASN_##name##String, PASN_ConstrainedString); \
    public: \
      PASN_##name##String(const char * str = NULL); \
      PASN_##name##String(unsigned tag, TagClass tagClass); \
      PASN_##name##String & operator=(const char * str); \
      PASN_##name##String & operator=(const PString & str); \
      virtual PObject * Clone() const; \
      virtual PString GetTypeAsString() const; \
  }

DECLARE_STRING_CLASS(Numeric);
DECLARE_STRING_CLASS(Printable);
DECLARE_STRING_CLASS(Visible);
DECLARE_STRING_CLASS(IA5);
DECLARE_STRING_CLASS(General);


/** Class for ASN BMP (16 bit) String type.
*/
class PASN_BMPString : public PASN_ConstrainedObject
{
    PCLASSINFO(PASN_BMPString, PASN_ConstrainedObject);
  public:
    PASN_BMPString(const char * str = NULL);
    PASN_BMPString(const PWORDArray & wstr);
    PASN_BMPString(unsigned tag, TagClass tagClass);

    PASN_BMPString(const PASN_BMPString & other);
    PASN_BMPString & operator=(const PASN_BMPString & other);

    PASN_BMPString & operator=(const char * v) { return operator=(PString(v).AsUCS2()); }
    PASN_BMPString & operator=(const PString & v) { return operator=(v.AsUCS2()); }
    PASN_BMPString & operator=(const PWORDArray & v);
    operator PString() const { return GetValue(); }
    operator PWORDArray() const { return value; }
    PString GetValue() const { return value; }
    void GetValue(PWORDArray & v) const { v = value; }
    void SetValue(const char * v) { operator=(PString(v).AsUCS2()); }
    void SetValue(const PString & v) { operator=(v.AsUCS2()); }
    void SetValue(const PWORDArray & v) { operator=(v); }
    void SetValue(const PASN_BMPString & v) { operator=(v.value); }

    void SetCharacterSet(ConstraintType ctype, const char * charSet);
    void SetCharacterSet(ConstraintType ctype, const PWORDArray & charSet);
    void SetCharacterSet(ConstraintType ctype, unsigned firstChar, unsigned lastChar);

    virtual Comparison Compare(const PObject & obj) const;
    virtual PObject * Clone() const;
    virtual void PrintOn(ostream & strm) const;

    virtual PString GetTypeAsString() const;
    virtual PINDEX GetDataLength() const;
    virtual BOOL Decode(PASN_Stream &);
    virtual void Encode(PASN_Stream &) const;

#ifdef P_INCLUDE_BER