static void
xmlSecBase64Finalize(xmlSecTransformPtr transform) {
xmlSecBase64CtxPtr ctx;
xmlSecAssert(xmlSecTransformCheckId(transform, xmlSecTransformBase64Id));
ctx = xmlSecBase64GetCtx(transform);
xmlSecAssert(ctx != NULL);
xmlSecBase64CtxFinalize(ctx);
}
/**
* xmlSecTransformBase64SetLineSize:
* @transform: the pointer to BASE64 encode transform.
* @lineSize: the new max line size.
*
* Sets the max line size to @lineSize.
*/
void
xmlSecTransformBase64SetLineSize(xmlSecTransformPtr transform, xmlSecSize lineSize) {
xmlSecBase64CtxPtr ctx;
xmlSecAssert(xmlSecTransformCheckId(transform, xmlSecTransformBase64Id));
ctx = xmlSecBase64GetCtx(transform);
xmlSecAssert(ctx != NULL);
ctx->columns = lineSize;
}
static int
xmlSecBase64Initialize(xmlSecTransformPtr transform) {
xmlSecBase64CtxPtr ctx;
int ret;
xmlSecAssert2(xmlSecTransformCheckId(transform, xmlSecTransformBase64Id), -1);
ctx = xmlSecBase64GetCtx(transform);
xmlSecAssert2(ctx != NULL, -1);
transform->operation = xmlSecTransformOperationDecode;
ret = xmlSecBase64CtxInitialize(ctx, 0, xmlSecBase64GetDefaultLineSize());
if(ret < 0) {
xmlSecInternalError("xmlSecBase64CtxInitialize",
xmlSecTransformGetName(transform));
return(-1);
}
return(0);
}
static int
xmlSecBase64Initialize(xmlSecTransformPtr transform) {
xmlSecBase64CtxPtr ctx;
int ret;
xmlSecAssert2(xmlSecTransformCheckId(transform, xmlSecTransformBase64Id), -1);
ctx = xmlSecBase64GetCtx(transform);
xmlSecAssert2(ctx != NULL, -1);
transform->operation = xmlSecTransformOperationDecode;
ret = xmlSecBase64CtxInitialize(ctx, 0, XMLSEC_BASE64_LINESIZE);
if(ret < 0) {
xmlSecErr_a_ignorar5(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
"xmlSecBase64CtxInitialize",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return(-1);
}
return(0);
}
static int
xmlSecBase64Execute(xmlSecTransformPtr transform, int last, xmlSecTransformCtxPtr transformCtx) {
xmlSecBase64CtxPtr ctx;
xmlSecBufferPtr in, out;
xmlSecSize inSize, outSize, outLen;
int ret;
xmlSecAssert2(xmlSecTransformCheckId(transform, xmlSecTransformBase64Id), -1);
xmlSecAssert2((transform->operation == xmlSecTransformOperationEncode) || (transform->operation == xmlSecTransformOperationDecode), -1);
xmlSecAssert2(transformCtx != NULL, -1);
ctx = xmlSecBase64GetCtx(transform);
xmlSecAssert2(ctx != NULL, -1);
in = &(transform->inBuf);
out = &(transform->outBuf);
if(transform->status == xmlSecTransformStatusNone) {
ctx->encode = (transform->operation == xmlSecTransformOperationEncode) ? 1 : 0;
transform->status = xmlSecTransformStatusWorking;
}
switch(transform->status) {
case xmlSecTransformStatusWorking:
inSize = xmlSecBufferGetSize(in);
outSize = xmlSecBufferGetSize(out);
if(inSize > 0) {
if(ctx->encode != 0) {
outLen = 4 * inSize / 3 + 8;
if(ctx->columns > 0) {
outLen += inSize / ctx->columns + 4;
}
} else {
outLen = 3 * inSize / 4 + 8;
}
ret = xmlSecBufferSetMaxSize(out, outSize + outLen);
if(ret < 0) {
xmlSecErr_a_ignorar6(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
"xmlSecBufferSetMaxSize",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
"size=%d", outSize + outLen);
return(-1);
}
/* encode/decode the next chunk */
ret = xmlSecBase64CtxUpdate(ctx, xmlSecBufferGetData(in), inSize,
xmlSecBufferGetData(out) + outSize,
outLen);
if(ret < 0) {
xmlSecErr_a_ignorar5(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
"xmlSecBase64CtxUpdate",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return(-1);
}
outLen = ret;
/* set correct size */
ret = xmlSecBufferSetSize(out, outSize + outLen);
if(ret < 0) {
xmlSecErr_a_ignorar6(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
"xmlSecBufferSetSize",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
"size=%d", outSize + outLen);
return(-1);
}
/* remove chunk from input */
ret = xmlSecBufferRemoveHead(in, inSize);
if(ret < 0) {
xmlSecErr_a_ignorar6(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
"xmlSecBufferRemoveHead",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
"size=%d", inSize);
return(-1);
}
}
if(last) {
outSize = xmlSecBufferGetSize(out);
ret = xmlSecBufferSetMaxSize(out, outSize + 16);
if(ret < 0) {
xmlSecErr_a_ignorar6(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
"xmlSecBufferSetMaxSize",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
"size=%d", outSize + 16);
return(-1);
}
/* add from ctx buffer */
ret = xmlSecBase64CtxFinal(ctx, xmlSecBufferGetData(out) + outSize, 16);
if(ret < 0) {
xmlSecErr_a_ignorar5(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
"xmlSecBase64CtxFinal",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return(-1);
}
outLen = ret;
/* set correct size */
ret = xmlSecBufferSetSize(out, outSize + outLen);
if(ret < 0) {
xmlSecErr_a_ignorar6(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
"xmlSecBufferSetSize",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
"size=%d", outSize + outLen);
return(-1);
}
transform->status = xmlSecTransformStatusFinished;
}
break;
case xmlSecTransformStatusFinished:
/* the only way we can get here is if there is no input */
xmlSecAssert2(xmlSecBufferGetSize(in) == 0, -1);
break;
default:
xmlSecErr_a_ignorar6(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecTransformGetName(transform)),
NULL,
XMLSEC_ERRORS_R_INVALID_STATUS,
"status=%d", transform->status);
return(-1);
}
return(0);
}
