ospasn1.h

mgcp协议源代码。支持多种编码：g711

    unsigned int    MaximumCount;
                            /* Maximum number of occurances of this item
                            that are allowed.  Usually 1, unless the
                            element contains a list (SET/SET_OF). */
    int             HasDefault;
                            /* Indicates that the value can have a default
                            value.  The default value must be assigned by
                            using app. */
    unsigned char   ClassTag;
                            /* Tag number used with explicit and implicit
                            tagging.  Used in body rules, not in the id
                            rule (index 0). Passed to Parser to modify tag
                            within new rule table.*/
} OSPTASN1PARSERULE;

typedef OSPTASN1PARSERULE OSPTASN1PARSETABLE;

typedef struct _OSPTOBJECTID {
    unsigned int *Elements;
    unsigned int ElementCount;
} OSPTASN1OBJECTID;

typedef int OSPTASN1BOOLEAN;

typedef struct _OSPTASN1UTCTIME {
    struct tm Time;
    int FractionalSeconds;
} OSPTASN1UTCTIME;

typedef struct _OSPTASN1BUFFER
{
    unsigned char *Buffer;
    unsigned int BufferLength;
} OSPTASN1BUFFER;


typedef struct _OSPTBITSTRING {
    int UnusedBits;     
    OSPTASN1BUFFER *Buffer;
} OSPTASN1BITSTRING;


/* INTEGER
    The integer structure holds DER encoded big integers.
    Assumes base 256, two's complement encoding.  digits[0] contains the
    MOST Significate digit in the integer.
*/
typedef struct _OSPTASN1INTEGER {
    unsigned int DigitCount;
    unsigned char *Digits;
    int *SmallValue;        /* Pointer to value if less than +|- 0x7fffffff */
} OSPTASN1INTEGER; 


typedef enum _OSPEALGORITHMID
{
    OSPE_ALGORITHMID_NONE,
    OSPE_ALGORITHMID_RSA_ENCRYPTION,
    OSPE_ALGORITHMID_MD5
} OSPEALGORITHMID;

/*
 * PROTOTYPES 
 */
#ifdef  __cplusplus
extern "C"
{
#endif

    int
    OSPPASN1UTCTimeEncode(
        OSPTASN1ELEMENTINFO *ospvElementInfo);

    int
    OSPPASN1PrintableStringEncode(
        OSPTASN1ELEMENTINFO *ospvElementInfo);

    int
    OSPPASN1IntegerEncode(
        OSPTASN1ELEMENTINFO *ospvElementInfo);

    int
    OSPPASN1EndOfContentEncode(
        OSPTASN1ELEMENTINFO *ospvElementInfo);

    int
    OSPPASN1BitStringEncode(
        OSPTASN1ELEMENTINFO *ospvElementInfo);

    int
    OSPPASN1ElementEncode(
        OSPTASN1ELEMENTINFO *ospvElementInfo);

    int
    OSPPASN1ObjectGetElementByDataRef(
        OSPTASN1OBJECT *ospvObject,
        OSPTASN1ELEMENTINFO **ospvElementInfo,
        OSPEASN1DATAREFID OospvDataRefId);

    int
    OSPPASN1ElementCopyElementData(
        OSPTASN1ELEMENTINFO *ospvElementInfo,
        unsigned char **ospvData,
        unsigned int  *ospvDataLength);

    int
    OSPPASN1SmallInt2UnsignedChar(
        unsigned ospvIntegerValue,
        unsigned ospvBase,
        unsigned char **ospvBuffer,
        unsigned *ospvBufferLength);

    int
    OSPPASN1SmallIntegerEncode(
        OSPTASN1OBJECT **ospvIntegerObject, 
        unsigned ospvInteger,
        OSPEASN1DATAREFID ospvDataRefId);

    int 
    OSPPASN1ElementFormat(
        OSPTASN1ELEMENTINFO **ospvElement,
        unsigned char   *ospvTag,
        unsigned char   ospvTagFlags,
        unsigned        ospvTagLength,
        unsigned char   *ospvData,
        unsigned        ospvDataLength);

    int 
    OSPPASN1ObjectFormat(
        OSPTASN1OBJECT **ospvObject,
        OSPTASN1ELEMENTINFO *ospvElement,
        OSPEASN1DATAREFID ospvDataRefId);

    int 
    OSPPASN1ObjectEncode(
        OSPTASN1OBJECT **ospvEncodedObject,
        unsigned char  *ospvTag,
        unsigned        ospvTagLength,
        unsigned char   ospvTagFlags,
        unsigned char  *ospvContent,
        unsigned        ospvContentLength,
        OSPEASN1DATAREFID ospvDataRefId);

    int
    OSPPASN1ObjectDeparse(
        OSPTASN1OBJECT *ospvObject,
        OSPEASN1PARSETABLEID ospvParseTableId,
        OSPEASN1DATAREFID ospvDataRefId);

    int
    OSPPASN1ObjectCopyElementObject(
        OSPTASN1OBJECT  **ospvDstObject, 
        OSPTASN1OBJECT  *ospvSrcObject,
        OSPEASN1DATAREFID ospvDataRefId);


    int
    OSPPASN1ObjectGetElementInfo(
        OSPTASN1OBJECT *ospvObject,
        OSPTASN1ELEMENTINFO **ospvElementInfo);

    int
    OSPPASN1ObjectGetContentElementInfo(
        OSPTASN1OBJECT *ospvObject,
        OSPTASN1ELEMENTINFO **ospvContentElementInfo);

    int
    OSPPASN1ObjectGetParseResults(
        OSPTASN1OBJECT *ospvObject,
        OSPTASN1PARSERESULT **ospvParseResults);

    int
    OSPPASN1ElementCopy(
        OSPTASN1ELEMENTINFO **ospvToElement,
        OSPTASN1ELEMENTINFO *ospvFromElement);

    int
    OSPPASN1ElementDeparse(
        OSPTASN1ELEMENTINFO **ospvElementInfo,
        OSPTASN1PARSERESULT **ospvParseResults,
        OSPEASN1PARSETABLEID ospvParseTableId,
        unsigned char *ospvDataReference);


    int 
    OSPPASN1IntegerGetSmallValue(
        OSPTASN1ELEMENTINFO *ospvInteger,
        int *ospvValue);

    int
    OSPPASN1ElementGetContentValue(
        OSPTASN1ELEMENTINFO *ospvElement,
        void **ospvContentValue);

    int
    OSPPASN1ElementGetContentData(
        OSPTASN1ELEMENTINFO *ospvElement,
        unsigned char **ospvContent,
        unsigned int  *ospvContentLength);

    int
    OSPPASN1ElementGetElementData(
        OSPTASN1ELEMENTINFO *ospvElementInfo,
        unsigned char **ospvData,
        unsigned int  *ospvDataLength);

    int
    OSPPASN1ObjectCopy(
        OSPTASN1OBJECT  **ospvToObject,
        OSPTASN1OBJECT  *ospvFromObject);

    int
    OSPPASN1AlgorithmIdEncode(
        OSPTASN1OBJECT      **ospvAlgorithIdObject,
        OSPEASN1ID          ospvAlgorithmIdCode,
        OSPEASN1DATAREFID   ospvDataRefId);

    void
    PTPResultUpdateDataRef(
        unsigned char ospvDataRef,
        OSPTASN1PARSERESULT *ospvParseResult);

    int
    PTPDataRefIdGetValue(
        OSPEASN1DATAREFID ospvDataRefId,
        unsigned char **ospvDataRefIdValue);

    int
    PTPDataRefAddRef(
        unsigned char ospvDataReference[OSPC_ASN1_DATAREF_MAXLENGTH],
        unsigned char ospvNewReference);


    /* If primitive can be a list (max >= 1), then all peers of
        this element should be the same element and should all be
        added to the list. Add Parse Result assumes this and adds a
        result for the element passed, and then traverses the
        element's "next" pointer to add entries for each of the
        elements it finds.  It returns when an element's
        "next" pointer is NULL.
        */
    int
    PTPAddParseResults(
        OSPTASN1PARSERULE *ospvParseRule, 
        OSPTASN1ELEMENTINFO *ospvElementInfo,
        OSPTASN1PARSERESULT **ospvParseResult,
        unsigned char ospvDataRef);

    int 
    PTPDataReferencesMatch(
        unsigned char *ospvDataReferenceId1,
        unsigned char *ospvDataReferenceId2);

    int 
    PTPResultIsRuleComponent(
        unsigned char *ospvRuleDataReference,
        unsigned char *ospvResultDataReference);

    int
    PTPResultsCopy(
        OSPTASN1PARSERESULT **ospvDstParseResults,
        OSPTASN1PARSERESULT *ospvSrcParseResults);

    int
    PTPResultsGetElement(
        OSPEASN1DATAREFID ospvDataReferenceId,
        OSPTASN1PARSERESULT *ospvParseResults,
        OSPTASN1ELEMENTINFO **ospvFoundElement);

    int
    PTPResultsCreate(
        OSPTASN1PARSERESULT **ospvParseResult,
        OSPTASN1ELEMENTINFO *ospvElementInfo,
        OSPEASN1DATAREFID ospvDataRefId);

    OSPTASN1PARSERESULT *
    PTPResultsEndOfList(
        OSPTASN1PARSERESULT *ospvResults);

    int
    PTPParseResultAppend(
        OSPTASN1PARSERESULT **ospvLastResult,
        OSPTASN1PARSERESULT *ospvNewResults);

    void
    PTPResultsDelete( 
        OSPTASN1PARSERESULT **ospvParseResult);

    int                                     /* Boolean */
    PTPRuleIsOptional(
        OSPTASN1PARSERULE *ospvParseRule);
    /* Boolean */


    void *
    PTPRuleGetDefault(
        OSPTASN1PARSERULE *ospvParseRule);

    int                                     /* Boolean */
    PTPRuleIsPrimitive(
        OSPTASN1PARSERULE *ospvParseRule);

    int                                     /* Boolean */
    PTPRuleIsDerived(
        OSPTASN1PARSERULE *ospvParseRule);

    int                                     /* Boolean */
    PTPRuleIsDERFormat(
        OSPTASN1PARSERULE *ospvParseRule);


    int 
    OSPPASN1ElementParse(
        OSPTASN1ELEMENTINFO *ospvElementInfo,
        OSPEASN1PARSETABLEID ospvParseTableId,
        OSPTASN1PARSERULE    *ospvParentParseRule,
        OSPTASN1PARSERESULT **ospvParseResult,
        unsigned char ospvDataRef);

    void
    OSPPASN1ElementParseDelete(
        OSPTASN1PARSERESULT **ospvParseResult);

    int
    PTPTableGet( 
        OSPEASN1PARSETABLEID ospvParseTableId,
        OSPTASN1PARSETABLE *ospvParseTable[]);

    int 
    PTPTableGetRule(
        OSPEASN1PARSETABLEID ospvParseTableId, 
        OSPTASN1PARSERULE   **ospvParseRule,
        unsigned int *ospvRuleIndex);       /* Updated to point to next rule */

    int 
    PTPRuleGetParseTableId( 
        OSPTASN1PARSERULE *ospvParseRule, 
        OSPEASN1PARSETABLEID *ospvParseTableId);


    void
        OSPPASN1IntegerDelete(
            OSPTASN1INTEGER **ospvInteger);

    int
    OSPPASN1IntegerCreate(
        unsigned char *ospvContent,
        unsigned int ospvContentLength,
        OSPTASN1INTEGER **ospvInteger);

    void 
    OSPPASN1BitStringDelete(
        OSPTASN1BITSTRING **ospvBitString);

    int
    OSPPASN1BitStringCreate(
        unsigned char *ospvContent,
        unsigned ospvContentLength,
        unsigned ospvUnusedBits,
        OSPTASN1BITSTRING **ospvBitString);

    int 
OSPPASN1ObjectAddChild( 
    OSPTASN1OBJECT  *ospvParent,
    OSPTASN1OBJECT  *ospvChild,
    OSPEASN1DATAREFID ospvDataRefId);

    int
    OSPPASN1ObjectNew(
        OSPTASN1OBJECT **ospvASN1Object,