PyObject *xmlsec_BufferCreateOutputBuffer(PyObject *self, PyObject *args) {
PyObject *buf_obj;
xmlSecBufferPtr buf;
xmlOutputBufferPtr outBuf;
if (CheckArgs(args, "O:bufferCreateOutputBuffer")) {
if (!PyArg_ParseTuple(args, "O:bufferCreateOutputBuffer", &buf_obj))
return NULL;
}
else return NULL;
buf = xmlSecBufferPtr_get(buf_obj);
outBuf = xmlSecBufferCreateOutputBuffer(buf);
return (wrap_xmlOutputBufferPtr(outBuf));
}
static int
xmlSecTransformRelationshipPopBin(xmlSecTransformPtr transform, xmlSecByte* data, xmlSecSize maxDataSize, xmlSecSize* dataSize, xmlSecTransformCtxPtr transformCtx) {
xmlSecBufferPtr out;
int ret;
xmlSecAssert2(data != NULL, -1);
xmlSecAssert2(dataSize != NULL, -1);
xmlSecAssert2(transformCtx != NULL, -1);
out = &(transform->outBuf);
if(transform->status == xmlSecTransformStatusNone) {
xmlOutputBufferPtr buf;
xmlSecAssert2(transform->inNodes == NULL, -1);
if(transform->prev == NULL) {
(*dataSize) = 0;
transform->status = xmlSecTransformStatusFinished;
return(0);
}
/* get xml data from previous transform */
ret = xmlSecTransformPopXml(transform->prev, &(transform->inNodes), transformCtx);
if(ret < 0) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
"xmlSecTransformPopXml",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return(-1);
}
/* dump everything to internal buffer */
buf = xmlSecBufferCreateOutputBuffer(out);
if(buf == NULL) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
"xmlSecBufferCreateOutputBuffer",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return(-1);
}
ret = xmlC14NExecute(transform->inNodes->doc, (xmlC14NIsVisibleCallback)xmlSecNodeSetContains, transform->inNodes, XML_C14N_1_0, NULL, 0, buf);
if(ret < 0) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
"xmlSecTransformC14NExecute",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
xmlOutputBufferClose(buf);
return(-1);
}
ret = xmlOutputBufferClose(buf);
if(ret < 0) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
"xmlOutputBufferClose",
XMLSEC_ERRORS_R_XML_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return(-1);
}
transform->status = xmlSecTransformStatusWorking;
}
if(transform->status == xmlSecTransformStatusWorking) {
xmlSecSize outSize;
/* return chunk after chunk */
outSize = xmlSecBufferGetSize(out);
if(outSize > maxDataSize) {
outSize = maxDataSize;
}
if(outSize > XMLSEC_TRANSFORM_BINARY_CHUNK) {
outSize = XMLSEC_TRANSFORM_BINARY_CHUNK;
}
if(outSize > 0) {
xmlSecAssert2(xmlSecBufferGetData(out), -1);
memcpy(data, xmlSecBufferGetData(out), outSize);
ret = xmlSecBufferRemoveHead(out, outSize);
if(ret < 0) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
"xmlSecBufferRemoveHead",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
"size=%d", outSize);
return(-1);
}
} else if(xmlSecBufferGetSize(out) == 0) {
transform->status = xmlSecTransformStatusFinished;
}
(*dataSize) = outSize;
} else if(transform->status == xmlSecTransformStatusFinished) {
/* the only way we can get here is if there is no output */
xmlSecAssert2(xmlSecBufferGetSize(out) == 0, -1);
(*dataSize) = 0;
} else {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
NULL,
XMLSEC_ERRORS_R_INVALID_STATUS,
"status=%d", transform->status);
return(-1);
}
return(0);
}
static int
xmlSecTransformRelationshipPushXml(xmlSecTransformPtr transform, xmlSecNodeSetPtr nodes, xmlSecTransformCtxPtr transformCtx)
{
xmlOutputBufferPtr buf;
xmlSecRelationshipCtxPtr ctx;
int ret;
xmlSecAssert2(nodes != NULL, -1);
xmlSecAssert2(nodes->doc != NULL, -1);
xmlSecAssert2(transformCtx != NULL, -1);
ctx = xmlSecRelationshipGetCtx(transform);
xmlSecAssert2(ctx != NULL, -1);
/* check/update current transform status */
switch(transform->status) {
case xmlSecTransformStatusNone:
transform->status = xmlSecTransformStatusWorking;
break;
case xmlSecTransformStatusWorking:
case xmlSecTransformStatusFinished:
return(0);
default:
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
NULL,
XMLSEC_ERRORS_R_INVALID_STATUS,
"status=%d", transform->status);
return(-1);
}
xmlSecAssert2(transform->status == xmlSecTransformStatusWorking, -1);
/* prepare output buffer: next transform or ourselves */
if(transform->next != NULL) {
buf = xmlSecTransformCreateOutputBuffer(transform->next, transformCtx);
if(buf == NULL) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
"xmlSecTransformCreateOutputBuffer",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return(-1);
}
} else {
buf = xmlSecBufferCreateOutputBuffer(&(transform->outBuf));
if(buf == NULL) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
"xmlSecBufferCreateOutputBuffer",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return(-1);
}
}
ret = xmlSecTransformRelationshipExecute(transform, buf, nodes->doc);
if(ret < 0) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
"xmlC14NExecute",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
xmlOutputBufferClose(buf);
return(-1);
}
ret = xmlOutputBufferClose(buf);
if(ret < 0) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
"xmlOutputBufferClose",
XMLSEC_ERRORS_R_XML_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return(-1);
}
transform->status = xmlSecTransformStatusFinished;
return(0);
}
