ospasn1.h

mgcp协议源代码。支持多种编码：g711

        OSPEASN1DATAREFID ospvDataRefId);

    int
    OSPPASN1ObjectCreate(
        OSPTASN1OBJECT **ospvASN1Object,
        OSPTASN1ELEMENTINFO *ospvElementInfo,
        OSPTASN1PARSERESULT *ospvParseResults);

    void
    OSPPASN1ObjectDelete(
        OSPTASN1OBJECT **ospvASN1Object);

    int 
        OSPPASN1ElementTestContext(
            OSPTASN1ELEMENTINFO *ospvElementInfo);

    int 
    OSPPASN1PrimitiveDecode(
        OSPTASN1ELEMENTINFO *ospvElementInfo);

    int 
    OSPPASN1PrimitiveDelete(
        OSPTASN1ELEMENTINFO *ospvElementInfo);

    int 
    OSPPASN1ElementDecode(
        unsigned char *ospvASN1Element,
        OSPTASN1ELEMENTINFO **ospvASN1ElementInfo,
        unsigned int ospvLevel);

    int 
    OSPPASN1ElementCreate(
        OSPTASN1ELEMENTINFO **ospvElementInfo);

    void
    OSPPASN1ElementDelete(
    OSPTASN1ELEMENTINFO **ospvElement,
    unsigned int        ospvLevel);

    int
    OSPPASN1ElementGet(
        OSPEASN1DATAREFID ospvDataRefId, 
        OSPTASN1PARSERESULT *ospvParseResults,
        OSPTASN1ELEMENTINFO **ospvFoundElement);

    void 
    OSPPASN1EndOfContentDelete(
        OSPTASN1ELEMENTINFO *ospvElementInfo);

    void 
    OSPPASN1NullDelete(
        OSPTASN1ELEMENTINFO *ospvElementInfo);

    void 
    OSPPASN1ObjectIdentifierDelete(
        OSPTASN1ELEMENTINFO *ospvElementInfo);

    void 
    OSPPASN1PrintableStringDelete(
        OSPTASN1ELEMENTINFO *ospvElementInfo);

    void 
    OSPPASN1UTCTimeDelete(
        OSPTASN1ELEMENTINFO *ospvElementInfo);

    int 
    OSPPASN1IntegerDecode(
        void *ospvContentValue,
        unsigned char *ospvContent,
        unsigned int  ospvContentLength);

    int 
    OSPPASN1ObjectIdentifierDecode(
        void *ospvContentValue,
        unsigned char *ospvContent,
        unsigned int  ospvContentLength);

    int 
    OSPPASN1PrintableStringDecode(
        void *ospvContentValue,
        unsigned char *ospvContent,
        unsigned int  ospvContentLength);

    int 
    OSPPASN1UTCTimeDecode(
        void *ospvContentValue,
        unsigned char *ospvContent,
        unsigned int  ospvContentLength);

    int 
    OSPPASN1BitStringDecode(
        void *ospvContentValue,
        unsigned char *ospvContent,
        unsigned int  ospvContentLength);

    int 
    OSPPASN1OctetStringDecode(
        void *ospvContentValue,
        unsigned char *ospvContent,
        unsigned int  ospvContentLength);

    int 
    OSPPASN1NullEncode(
    OSPTASN1OBJECT  **ospvNullObject);

    int 
    OSPPASN1BigIntegerEncode(
        OSPTASN1OBJECT **ospvIntegerObject,
        unsigned char   *ospvIntegerData,
        unsigned int    ospvIntegerLength);

    int 
    OSPPASN1ObjectIdentifierEncode(
    OSPTASN1OBJECT  **ospvOIDObject,
    OSPEASN1ID      ospvObjectId,
    OSPEASN1DATAREFID ospvDataRefId);

    int 
    OSPPASN1OctetStringEncode(
    OSPTASN1OBJECT **ospvOctetStringObject,
    unsigned char *ospvContent,
    unsigned ospvContentLength,
    OSPEASN1DATAREFID ospvDataRefId);

    int
    OSPPASN1BufferCreate(
        unsigned char *ospvContent,
        unsigned ospvContentLength,
        OSPTASN1BUFFER **ospvBuffer);

    void 
    OSPPASN1BufferDelete(
        OSPTASN1BUFFER **ospvBuffer);

    int
    OSPPASN1PrimitiveEncode(
        OSPTASN1ELEMENTINFO *ospvElementInfo);




#ifdef __cplusplus
}
#endif

typedef struct _OSPTDERBUF 
{
    unsigned char *data;  /* Pointer to storage for the certificate   */
    unsigned char *ptr;   /* Pointer to beginning of buffer remainder */
} OSPTDERBUF;

/*****************************************************************
    ASN1 SIMPLE TYPES
*****************************************************************/
#define OSPC_ASN1_OID_MAX_ELEMENTS            20

typedef struct _OSPTOBJID 
{
    int element[OSPC_ASN1_OID_MAX_ELEMENTS];
} OSPTOBJECTID;

typedef struct 
{
    struct tm time;
    int       fracsec;
} OSPTUTCTIME;


#define OSPC_OID_VALUE_TERMINATOR    (-1)  /* Not a legal OID value */
#define OSPC_OID_VALUE_DIGIT_MASK    0x7F  /* Base 128 */
#define OSPC_OID_VALUE_END_MASK        0x80  /* MSB = 0 in last octet of value */


/*****************************************************************
    OBJECT ID DEFINITIONS/XREF/TAGS
*****************************************************************/
#define OSPC_OID_CODE_NOT_FOUND  0
#define OSPC_OID_CODE_ALGORITHM    1, 3, 14, 3, 2

#define OSPC_OID_CODE_RSADSI        1, 2, 840, 113549
#define     OSPC_OID_CODE_PKCS        OID_CODE_RSADSI, 1            
#define         OSPC_OID_CODE_PKCS9        OID_CODE_PKCS, 9
#define         OSPC_OID_CODE_ALG_RSAENCRYPTION \
                                    OSPC_OID_CODE_PKCS, 1, 1
#define            OSPC_OID_CODE_ALG_MD2WITHRSAENCRYPTION \
                                    OSPC_OID_CODE_PKCS, 1, 2
#define            OSPC_OID_CODE_ALG_MD5WITHRSAENCRYPTION \
                                    OSPC_OID_CODE_PKCS, 1, 4

#define     OSPC_OID_CODE_MD2        OID_CODE_RSADSI, 2, 2
#define     OSPC_OID_CODE_MD5        OID_CODE_RSADSI, 2, 5
#define     OSPC_OID_CODE_RC4        OID_CODE_RSADSI, 3, 4

#define OSPC_OID_CODE_X500        2, 5    
#define     OSPC_OID_CODE_X509        OID_CODE_X500, 4
#define         OSPC_OID_CODE_DN_COUNTRY        OID_CODE_X509,  6
#define         OSPC_OID_CODE_DN_STATE        OID_CODE_X509,  8
#define         OSPC_OID_CODE_DN_LOCALITY    OID_CODE_X509,  7
#define         OSPC_OID_CODE_DN_ORGANIZATION \
                                        OSPC_OID_CODE_X509, 10
#define         OSPC_OID_CODE_DN_ORG_UNIT    OID_CODE_X509, 11
#define         OSPC_OID_CODE_DN_COMMON_NAME OID_CODE_X509,  3

#define     OSPC_OID_CODE_RSA        OID_CODE_X500, 8, 1, 1

#define     OSPC_OID_CODE_LD_CE        OID_CODE_X500, 29
#define            OSPC_OID_CODE_EXT_KEY_USAGE    OID_CODE_LD_CE, 15
#define            OSPC_OID_CODE_EXT_SUBJECT_KEY_ID \
                                        OSPC_OID_CODE_LD_CE, 14


/* ***************************************************************
   ENTRIES IN THE ARRAY THAT FOLLOWS MUST BE IN THE SAME ORDER AS 
   THE ENUM 
*/
typedef enum 
{ 
    OSPC_OID_TAG_DN_COUNTRY, 
    OSPC_OID_TAG_DN_STATE,
    OSPC_OID_TAG_DN_LOCALITY,
    OSPC_OID_TAG_DN_ORGANIZATION,
    OSPC_OID_TAG_DN_ORG_UNIT,
    OSPC_OID_TAG_DN_COMMON_NAME,
    OSPC_OID_TAG_ALG_RSAENCRYPTION,
    OSPC_OID_TAG_ALG_MD5WITHRSAENCRYPTION,
    OSPC_OID_TAG_EXT_KEY_USAGE,
    OSPC_OID_TAG_EXT_SUBJECT_KEY_ID,
    OSPC_OID_TAG_NOT_FOUND 
} OSPEOIDTAG;

typedef struct {
    OSPEOIDTAG     tag;
    OSPTOBJECTID   oid;
    char          *sname;
    char          *lname;
} OSPTOIDXREF;

#define OSPC_OID_XX    OSPC_OID_VALUE_TERMINATOR
/* ************************************************************** */


typedef struct 
{
    int            type; 
    unsigned char *value;
    unsigned       length;
} OSPTPARAMETER;

#define OSPC_ATV_MAX_PARAMS 10

typedef struct {
    OSPTOBJECTID   oid;
    OSPTPARAMETER *params[OSPC_ATV_MAX_PARAMS]; /* Dynamically allocated */
} OSPTATTRTYPEVAL; 


/* typedef OSPTALGORITHMID OSPTDIGESTALGORITHMID; */

/**************************************************
    DER/BER (Encoding/Decoding Rules) Definitions
***************************************************/

#define OSPC_BER_MAX_TAG_LENGTH             10

#define OSPC_BER_MODE_MASK                 0x20
#define OSPC_BER_MODE_PRIMITIVE            0x00
#define OSPC_BER_MODE_CONSTRUCTED          0x20
#define OSPM_CONSTRUCTED_TAG(a)     \
                        ((a) | OSPC_BER_MODE_CONSTRUCTED)
#define OSPM_IS_PRIMITIVE(a)    \
                        (((a)&OSPC_BER_MODE_MASK) == OSPC_BER_MODE_PRIMITIVE)
#define OSPM_IS_CONSTRUCTED(a)  \
                        (((a)&OSPC_BER_MODE_MASK) == OSPC_BER_MODE_CONSTRUCTED)
#define OSPC_BER_CLASS_MASK                0xc0
#define OSPC_BER_CLASS_UNIVERSAL           0x00
#define OSPC_BER_CLASS_APPLICATION         0x40
#define OSPC_BER_CLASS_CONTEXT_SENS        0x80
#define OSPC_BER_CLASS_PRIVATE             0xc0

#define OSPC_BER_EXPLICIT_MASK \
       (OSPC_BER_MODE_CONSTRUCTED | OSPC_BER_CLASS_CONTEXT_SENS)
/* 0xa0 */

#define OSPC_BER_IMPLICIT_MASK \
                    (OSPC_BER_MODE_CONSTRUCTED | OSPC_BER_CLASS_CONTEXT_SENS)
/* 0xa0 */

#define OSPC_BER_LENGTH_MODE_MASK          0x80
#define OSPC_BER_LENGTH_MODE_SHORT         0x00
#define OSPC_BER_LENGTH_MODE_LONG          0x80

#define OSPC_BER_LENGTH_MASK               0x7f
#define OSPM_IS_SHORT_LENGTH(a) \
                (((a)&OSPC_BER_LENGTH_MODE_MASK)==OSPC_BER_LENGTH_MODE_SHORT)
#define OSPM_IS_LONG_LENGTH(a)  \
                (((a)&OSPC_BER_LENGTH_MODE_MASK)==OSPC_BER_LENGTH_MODE_LONG)
#define OSPM_BER_LENGTH(a)                              (((a)&OSPC_BER_LENGTH_MASK))

#define OSPC_BER_TAG_MASK                  0x1f
#define OSPC_BER_TAG_HIGH                  0x1f


#define OSPM_BASE_TAG(a)            ((a) & (OSPC_BER_TAG_MASK))         
#define OSPM_IS_HIGH_TAG(a)     \
                            (((a) & (OSPC_BER_TAG_HIGH)) == OSPC_BER_TAG_HIGH)

#define OSPC_TAG_TYPE_EOC                  0x00
#define OSPC_TAG_TYPE_BOOLEAN               0x01
#define OSPC_TAG_TYPE_INTEGER              0x02
#define OSPC_TAG_TYPE_BIT_STRING           0x03
#define OSPC_TAG_TYPE_OCTET_STRING         0x04
#define OSPC_TAG_TYPE_NULL                 0x05
#define OSPC_TAG_TYPE_OBJECT_IDENTIFIER    0x06
#define OSPC_TAG_TYPE_SEQUENCE             0x10 
#define OSPC_TAG_TYPE_SET                  0x11
#define OSPC_TAG_TYPE_PRINTABLESTRING      0x13
#define OSPC_TAG_TYPE_T61STRING            0x14
#define OSPC_TAG_TYPE_IA5STRING            0x16
#define OSPC_TAG_TYPE_UTCTIME              0x17
#define OSPC_TAG_TYPE_GENERALIZEDTIME      0x18
#define OSPC_TAG_TYPE_BMPSTRING            0x1e

#define OSPC_TAG_TYPE_IMPLICIT              0xa0
#define OSPM_TAG_TYPE_IMPLICIT_TAG(a)       ((OSPC_TAG_TYPE_IMPLICIT) | (a))
#define OSPM_IS_IMPLICIT(a)  \
                    (((a) & OSPC_BER_IMPLICIT_MASK) == OSPC_BER_IMPLICIT_MASK)

#define OSPC_TAG_TYPE_EXPLICIT              0xa0
#define OSPM_TAG_TYPE_EXPLICIT_TAG(a)       ((OSPC_TAG_TYPE_EXPLICIT) | (a))
#define OSPM_IS_EXPLICIT(a)  \
                    (((a) & OSPC_BER_EXPLICIT_MASK) == OSPC_BER_EXPLICIT_MASK)


/* SPECIAL NOT-REALLY-A-TAG TAGS */
#define OSPC_TAG_TYPE_DER_FORMAT            0xFE
#define OSPC_TAG_TYPE_DERIVED               0xFF


#define OSPM_EXPLICIT_CLASSNUMBER(a)    ((a) & OSPC_BER_TAG_MASK)
#define OSPC_BER_MAX_EXTENSIONS 10

typedef union char2int_union {
    OSPTUINT64 num;
    unsigned char buf[sizeof(OSPTUINT64)];
} OSPTCHAR2INT;

typedef struct {
    unsigned char tag[OSPC_BER_MAX_TAG_LENGTH];    /* Complete tag */
    unsigned int type;                        /* Element's type */
    unsigned int taglength;                /* Length of tag and length fields */
    unsigned int length;                /* Element's length */ 
    unsigned char *value;            /* Pointer to element's data */
} OSPTBERELEMENT;


typedef struct {
    int length;
    unsigned char *buffer;
} OSPTDERELEMENT;

#define OSPC_BER_MAX_EXTENSIONS 10

typedef struct {
    int id;
    char *text;
} OSPTTEXTLISTELEMENT;

#endif