cert.c

PGP—Pretty Good Privacy

          + PKISizeofINTEGERInternal(&asnstruct->g, PKITRUE, PKIFALSE) ;

    if (outerSizeFlag == PKITRUE)
        body_size = PKITagged(body_size, 1);

    if (expTaggedFlag == PKITRUE)
        body_size = PKITagged(body_size, 1); /* this is seq like */

    return body_size;

} /* PKISizeofDss_ParmsInternal */

void PKIDropInPlaceDss_Parms(
    PKICONTEXT *ctx,
    PKIDss_Parms *f)
{
    if (ctx == NULL)
        return;

    if (f == NULL) return ;
    PKIDropInPlaceINTEGER(ctx, &(f->p));
    PKIDropInPlaceINTEGER(ctx, &(f->q));
    PKIDropInPlaceINTEGER(ctx, &(f->g));
} /* PKIDropInPlaceDss_Parms */

size_t PKIPackDss_ParmsInternal(
    PKICONTEXT *ctx,
    unsigned char *buf,
    size_t buflen,
    PKIDss_Parms *asnstruct,
    unsigned char tag,
    int *erret)
{
    size_t bytesused;
    size_t tagsize;
    size_t datasize;

    if (erret == NULL) return 0; /* can't report errors */

    if (ctx == NULL) {
        PKIERR(PKIErrBadContext);
        return 0;
    }
    if (asnstruct == NULL) return 0;

    /* lth of the block body */
    datasize = PKISizeofDss_Parms(ctx, asnstruct, PKIFALSE);
    tagsize = 1 + PKILengthSize(datasize);
    if (datasize+tagsize > buflen) {
        PKIERR(PKIErrPackBufferTooShort);
        return 0;
    }

    /* this is a SEQUENCE */
    bytesused = PKIPutTag(buf, (unsigned char)(tag|0x20), datasize);
    if (bytesused != tagsize) {
        PKIERR(PKIErrPackOverrun);
        return bytesused;
    }
    datasize += tagsize;

  do {

    /* field p of Dss_Parms */
    bytesused += PKIPackINTEGERInternal(ctx, buf+bytesused, buflen-bytesused,
                       &(asnstruct->p), PKIID_INTEGER, erret);
    if (bytesused > datasize || *erret != 0)
        break;

    /* field q of Dss_Parms */
    bytesused += PKIPackINTEGERInternal(ctx, buf+bytesused, buflen-bytesused,
                       &(asnstruct->q), PKIID_INTEGER, erret);
    if (bytesused > datasize || *erret != 0)
        break;

    /* field g of Dss_Parms */
    bytesused += PKIPackINTEGERInternal(ctx, buf+bytesused, buflen-bytesused,
                       &(asnstruct->g), PKIID_INTEGER, erret);
    if (bytesused > datasize || *erret != 0)
        break;

  } while(0);

    if (bytesused < datasize && *erret == 0)
        PKIERR(PKIErrPackUnderrun)
    else if (bytesused > datasize && *erret == 0)
        PKIERR(PKIErrPackOverrun)

    return bytesused;
} /* PKIPackDss_ParmsInternal */

size_t PKIUnpkInPlaceDss_Parms(
    PKICONTEXT *ctx,
    PKIDss_Parms *asnstruct,
    const unsigned char *buf,
    size_t buflen,
    unsigned char tag,
    int *erret)
{
    size_t bytesused = 0;
    size_t datasize;
    size_t localsize;
    int indef = 0;

    PKITRACE_PRINT_FN((tag|0x20), 0x30, "SEQUENCE", "Dss_Parms" );

    if (erret == NULL) return 0; /* can't report errors */
    *erret = 0;

    if (ctx == NULL) {
        PKIERR(PKIErrBadContext);
        return 0;
    }

    if (asnstruct == NULL) {
        PKIERR(PKIErrUnpackNoStructure);
        return 0;
    }

    if (buf == NULL) {
        PKIERR(PKIErrUnpackNoBlockPtr);
        return 0;
    }

    if (buflen <= 0) return 0; /* no error -- no block */

    if ( (*buf & 0xDF) != (tag & 0xDF) )
        return 0; /* no error code, just no block */
    if ( (*buf & 0x20) != 0x20) {
        PKIERR(PKIErrUnpackInvalidEncoding);
        return 0;
    }

    /* accept the tag byte */
    bytesused++;

    /* get the block length */
    bytesused += PKIGetLength(buf+bytesused, &datasize);
    if ((int)datasize == -1) {
        localsize = buflen;
        indef = 1;
    }
    else {
        localsize = bytesused + datasize;
        if (localsize > buflen) {
            PKIERR(PKIErrUnpackOverrun);
            return 0;
        }
    }

    PKITRACE_INCR_LEVEL;
  do {

    /* field p of Dss_Parms */
    bytesused += PKIUnpkInPlaceINTEGER(ctx, &(asnstruct->p), buf+bytesused,
                        localsize-bytesused, PKIID_INTEGER, erret);
    if (bytesused > localsize || *erret != 0)
        break;

    /* field q of Dss_Parms */
    bytesused += PKIUnpkInPlaceINTEGER(ctx, &(asnstruct->q), buf+bytesused,
                        localsize-bytesused, PKIID_INTEGER, erret);
    if (bytesused > localsize || *erret != 0)
        break;

    /* field g of Dss_Parms */
    bytesused += PKIUnpkInPlaceINTEGER(ctx, &(asnstruct->g), buf+bytesused,
                        localsize-bytesused, PKIID_INTEGER, erret);
    if (bytesused > localsize || *erret != 0)
        break;

    if (indef) {
        if ( *(buf+bytesused) != 0x00 &&
             *(buf+bytesused+1) != 0x00 ) {
            PKIERR(PKIErrUnpackInvalidEncoding);
            break;
        }
        bytesused += 2;
    }
  } while(0);

    PKITRACE_DECR_LEVEL;
    if (bytesused > localsize && *erret == 0)
        PKIERR(PKIErrUnpackOverrun);
    if (!indef && bytesused < localsize && *erret == 0)
        PKIERR(PKIErrUnpackUnderrun);

    return bytesused;
} /* PKIUnpkInPlaceDss_Parms */

size_t PKIUnpackDss_ParmsInternal(
    PKICONTEXT *ctx,
    PKIDss_Parms **asnstruct,
    const unsigned char *buf,
    size_t buflen,
    unsigned char tag,
    int *erret)
{
    size_t bytesused;
    PKIDss_Parms *local = NULL;

    if (erret == NULL) return 0;
    *erret = 0;

    if (ctx == NULL) {
        PKIERR(PKIErrBadContext);
        return 0;
    }
    if (asnstruct == NULL) {
        PKIERR(PKIErrUnpackNoStructure);
        return 0;
    }
    *asnstruct = NULL;

    if (buflen <= 0) return 0; /* no bytes left */

    if ( (*buf & 0xDF) != (tag & 0xDF) ) 
        return 0; /* not correct tag */

    local = PKINewDss_Parms(ctx); /* carve a block for it */
    bytesused = PKIUnpkInPlaceDss_Parms(ctx, local, buf, buflen, tag, erret);
    if (*erret != 0) {
        if (local != NULL) PKIFreeDss_Parms(ctx, local);
        return 0;
    }
    *asnstruct = local;
    return bytesused;
} /* PKIUnpackDss_ParmsInternal */


/******************************************************************
 * Routines for Dss_Sig_Value
 ******************************************************************/

size_t PKISizeofDss_Sig_ValueInternal(
    PKIDss_Sig_Value *asnstruct,
    int outerSizeFlag,
    int expTaggedFlag)
{
    size_t body_size = 0;

    if (asnstruct == NULL)
        return 0;

    body_size =
            PKISizeofINTEGERInternal(&asnstruct->r, PKITRUE, PKIFALSE)
          + PKISizeofINTEGERInternal(&asnstruct->s, PKITRUE, PKIFALSE) ;

    if (outerSizeFlag == PKITRUE)
        body_size = PKITagged(body_size, 1);

    if (expTaggedFlag == PKITRUE)
        body_size = PKITagged(body_size, 1); /* this is seq like */

    return body_size;

} /* PKISizeofDss_Sig_ValueInternal */

void PKIDropInPlaceDss_Sig_Value(
    PKICONTEXT *ctx,
    PKIDss_Sig_Value *f)
{
    if (ctx == NULL)
        return;

    if (f == NULL) return ;
    PKIDropInPlaceINTEGER(ctx, &(f->r));
    PKIDropInPlaceINTEGER(ctx, &(f->s));
} /* PKIDropInPlaceDss_Sig_Value */

size_t PKIPackDss_Sig_ValueInternal(
    PKICONTEXT *ctx,
    unsigned char *buf,
    size_t buflen,
    PKIDss_Sig_Value *asnstruct,
    unsigned char tag,
    int *erret)
{
    size_t bytesused;
    size_t tagsize;
    size_t datasize;

    if (erret == NULL) return 0; /* can't report errors */

    if (ctx == NULL) {
        PKIERR(PKIErrBadContext);
        return 0;
    }
    if (asnstruct == NULL) return 0;

    /* lth of the block body */
    datasize = PKISizeofDss_Sig_Value(ctx, asnstruct, PKIFALSE);
    tagsize = 1 + PKILengthSize(datasize);
    if (datasize+tagsize > buflen) {
        PKIERR(PKIErrPackBufferTooShort);
        return 0;
    }

    /* this is a SEQUENCE */
    bytesused = PKIPutTag(buf, (unsigned char)(tag|0x20), datasize);
    if (bytesused != tagsize) {
        PKIERR(PKIErrPackOverrun);
        return bytesused;
    }
    datasize += tagsize;

  do {

    /* field r of Dss_Sig_Value */
    bytesused += PKIPackINTEGERInternal(ctx, buf+bytesused, buflen-bytesused,
                       &(asnstruct->r), PKIID_INTEGER, erret);
    if (bytesused > datasize || *erret != 0)
        break;

    /* field s of Dss_Sig_Value */
    bytesused += PKIPackINTEGERInternal(ctx, buf+bytesused, buflen-bytesused,
                       &(asnstruct->s), PKIID_INTEGER, erret);
    if (bytesused > datasize || *erret != 0)
        break;

  } while(0);

    if (bytesused < datasize && *erret == 0)
        PKIERR(PKIErrPackUnderrun)
    else if (bytesused > datasize && *erret == 0)
        PKIERR(PKIErrPackOverrun)

    return bytesused;
} /* PKIPackDss_Sig_ValueInternal */

size_t PKIUnpkInPlaceDss_Sig_Value(
    PKICONTEXT *ctx,
    PKIDss_Sig_Value *asnstruct,
    const unsigned char *buf,
    size_t buflen,
    unsigned char tag,
    int *erret)
{
    size_t bytesused = 0;
    size_t datasize;
    size_t localsize;
    int indef = 0;

    PKITRACE_PRINT_FN((tag|0x20), 0x30, "SEQUENCE", "Dss_Sig_Value" );

    if (erret == NULL) return 0; /* can't report errors */
    *erret = 0;

    if (ctx == NULL) {
        PKIERR(PKIErrBadContext);
        return 0;
    }

    if (asnstruct == NULL) {
        PKIERR(PKIErrUnpackNoStructure);
        return 0;
    }

    if (buf == NULL) {
        PKIERR(PKIErrUnpackNoBlockPtr);
        return 0;
    }

    if (buflen <= 0) return 0; /* no error -- no block */

    if ( (*buf & 0xDF) != (tag & 0xDF) )
        return 0; /* no error code, just no block */
    if ( (*buf & 0x20) != 0x20) {
        PKIERR(PKIErrUnpackInvalidEncoding);
        return 0;
    }

    /* accept the tag byte */
    bytesused++;

    /* get the block length */
    bytesused += PKIGetLength(buf+bytesused, &datasize);
    if ((int)datasize == -1) {
        localsize = buflen;
        indef = 1;
    }
    else {
        localsize = bytesused + datasize;
        if (localsize > buflen) {
            PKIERR(PKIErrUnpackOverrun);
            return 0;
        }
    }

    PKITRACE_INCR_LEVEL;
  do {

    /* field r of Dss_Sig_Value */
    bytesused += PKIUnpkInPlaceINTEGER(ctx, &(asnstruct->r), buf+bytesused,
                        localsize-bytesused, PKIID_INTEGER, erret);
    if (bytesused > localsize || *erret != 0)
        break;

    /* field s of Dss_Sig_Value */
    bytesused += PKIUnpkInPlaceINTEGER(ctx, &(asnstruct->s), buf+bytesused,
                        localsize-bytesused, PKIID_INTEGER, erret);
    if (bytesused > localsize || *erret != 0)
        break;

    if (indef) {
        if ( *(buf+bytesused) != 0x00 &&
             *(buf+bytesused+1) != 0x00 ) {
            PKIERR(PKIErrUnpackInvalidEncoding);
            break;
        }
        bytesused += 2;
    }
  } while(0);

    PKITRACE_DECR_LEVEL;
    if (bytesused > localsize && *erret == 0)
        PKIERR(PKIErrUnpackOverrun);
    if (!indef && bytesused < localsize && *erret == 0)
        PKIERR(PKIErrUnpackUnderrun);

    return bytesused;
} /* PKIUnpkInPlaceDss_Sig_Value */

size_t PKIUnpackDss_Sig_ValueInternal(
    PKICONTEXT *ctx,
    PKIDss_Sig_Value **asnstruct,
    const unsigned char *buf,
    size_t buflen,
    unsigned char tag,
    int *erret)
{
    size_t bytesused;
    PKIDss_Sig_Value *local = NULL;

    if (erret == NULL) return 0;
    *erret = 0;

    if (ctx == NULL) {
        PKIERR(PKIErrBadContext);
        return 0;
    }
    if (asnstruct == NULL) {
        PKIERR(PKIErrUnpackNoStructure);
        return 0;
    }
    *asnstruct = NULL;

    if (buflen <= 0) return 0; /* no bytes left */

    if ( (*buf & 0xDF) != (tag & 0xDF) ) 
        return 0; /* not correct tag */

    local = PKINewDss_Sig_Value(ctx); /* carve a block for it */
    bytesused = PKIUnpkInPlaceDss_Sig_Value(ctx, local, buf, buflen, tag, erret);
    if (*erret != 0) {
        if (local != NULL) PKIFreeDss_Sig_Value(ctx, local);
        return 0;
    }
    *asnstruct = local;
    return bytesused;
} /* PKIUnpackDss_Sig_ValueInternal */


/******************************************************************
 * Routines for ExtKeyUsageSyntax
 ******************************************************************/

size_t PKISizeofExtKeyUsageSynt