blob: 554c88da1b2d68fae43fe2f38b52ab755f06daf7 [file] [log] [blame]
/**
* @author: Jeff Thompson
* Derived from Key.js by Meki Cheraoui.
* See COPYING for copyright and distribution information.
*/
#include "binary-xml.h"
#include "binary-xml-structure-decoder.h"
#include "binary-xml-key.h"
ndn_Error ndn_encodeBinaryXmlKeyLocator(struct ndn_KeyLocator *keyLocator, struct ndn_BinaryXmlEncoder *encoder)
{
if (keyLocator->type < 0)
return 0;
ndn_Error error;
if ((error = ndn_BinaryXmlEncoder_writeElementStartDTag(encoder, ndn_BinaryXml_DTag_KeyLocator)))
return error;
if (keyLocator->type == ndn_KeyLocatorType_KEY) {
if ((error = ndn_BinaryXmlEncoder_writeBlobDTagElement
(encoder, ndn_BinaryXml_DTag_Key, keyLocator->keyOrCertificate, keyLocator->keyOrCertificateLength)))
return error;
}
else if (keyLocator->type == ndn_KeyLocatorType_CERTIFICATE) {
if ((error = ndn_BinaryXmlEncoder_writeBlobDTagElement
(encoder, ndn_BinaryXml_DTag_Certificate, keyLocator->keyOrCertificate, keyLocator->keyOrCertificateLength)))
return error;
}
else if (keyLocator->type == ndn_KeyLocatorType_KEYNAME) {
// TODO: Implement keyName
}
else
return NDN_ERROR_unrecognized_ndn_KeyLocatorType;
if ((error = ndn_BinaryXmlEncoder_writeElementClose(encoder)))
return error;
return 0;
}
ndn_Error ndn_decodeBinaryXmlKeyLocator(struct ndn_KeyLocator *keyLocator, struct ndn_BinaryXmlDecoder *decoder)
{
ndn_Error error;
if ((error = ndn_BinaryXmlDecoder_readElementStartDTag(decoder, ndn_BinaryXml_DTag_KeyLocator)))
return error;
int gotExpectedTag;
if ((error = ndn_BinaryXmlDecoder_peekDTag(decoder, ndn_BinaryXml_DTag_Key, &gotExpectedTag)))
return error;
if (gotExpectedTag) {
keyLocator->type = ndn_KeyLocatorType_KEY;
if ((error = ndn_BinaryXmlDecoder_readBinaryDTagElement
(decoder, ndn_BinaryXml_DTag_Key, 0, &keyLocator->keyOrCertificate, &keyLocator->keyOrCertificateLength)))
return error;
}
else {
if ((error = ndn_BinaryXmlDecoder_peekDTag(decoder, ndn_BinaryXml_DTag_Certificate, &gotExpectedTag)))
return error;
if (gotExpectedTag) {
keyLocator->type = ndn_KeyLocatorType_CERTIFICATE;
if ((error = ndn_BinaryXmlDecoder_readBinaryDTagElement
(decoder, ndn_BinaryXml_DTag_Certificate, 0, &keyLocator->keyOrCertificate, &keyLocator->keyOrCertificateLength)))
return error;
}
else {
if ((error = ndn_BinaryXmlDecoder_peekDTag(decoder, ndn_BinaryXml_DTag_KeyName, &gotExpectedTag)))
return error;
if (gotExpectedTag) {
// TODO: Implement keyName. For now, just use a structure decoder to skip it.
struct ndn_BinaryXmlStructureDecoder structureDecoder;
ndn_BinaryXmlStructureDecoder_init(&structureDecoder);
ndn_BinaryXmlStructureDecoder_seek(&structureDecoder, decoder->offset);
if ((error = ndn_BinaryXmlStructureDecoder_findElementEnd(&structureDecoder, decoder->input, decoder->inputLength)))
return error;
if (!structureDecoder.gotElementEnd)
return NDN_ERROR_read_past_the_end_of_the_input;
ndn_BinaryXmlDecoder_seek(decoder, structureDecoder.offset);
}
else
return NDN_ERROR_decodeBinaryXmlKeyLocator_unrecognized_key_locator_type;
}
}
if ((error = ndn_BinaryXmlDecoder_readElementClose(decoder)))
return error;
return 0;
}
ndn_Error ndn_decodeOptionalBinaryXmlKeyLocator(struct ndn_KeyLocator *keyLocator, struct ndn_BinaryXmlDecoder *decoder)
{
int gotExpectedTag;
ndn_Error error;
if ((error = ndn_BinaryXmlDecoder_peekDTag(decoder, ndn_BinaryXml_DTag_KeyLocator, &gotExpectedTag)))
return error;
if (gotExpectedTag) {
if ((error = ndn_decodeBinaryXmlKeyLocator(keyLocator, decoder)))
return error;
}
else
ndn_KeyLocator_init(keyLocator);
return 0;
}