/**
* Convert a protobuf byte array into a Libp2pRecord
* @param in the byte array
* @param in_size the size of the byte array
* @param out a pointer to the new Libp2pRecord
* @returns true(1) on success, otherwise false(0)
*/
int libp2p_record_protobuf_decode(const unsigned char* in, size_t in_size, struct Libp2pRecord** out) {
size_t pos = 0;
int retVal = 0;
if ( (*out = libp2p_record_new()) == NULL)
goto exit;
while(pos < in_size) {
size_t bytes_read = 0;
int field_no;
enum WireType field_type;
if (!protobuf_decode_field_and_type(&in[pos], in_size, &field_no, &field_type, &bytes_read)) {
goto exit;
}
pos += bytes_read;
switch(field_no) {
case (1): // key
if (!protobuf_decode_string(&in[pos], in_size - pos, (char**)&((*out)->key), &bytes_read))
goto exit;
(*out)->key_size = strlen((*out)->key);
pos += bytes_read;
break;
case (2): // value
if (!protobuf_decode_length_delimited(&in[pos], in_size - pos, (char**)&((*out)->value), &((*out)->value_size), &bytes_read))
goto exit;
pos += bytes_read;
break;
case (3): // author
if (!protobuf_decode_length_delimited(&in[pos], in_size - pos, (char**)&((*out)->author), &((*out)->author_size), &bytes_read))
goto exit;
pos += bytes_read;
break;
case (4): // signature
if (!protobuf_decode_length_delimited(&in[pos], in_size - pos, (char**)&((*out)->signature), &((*out)->signature_size), &bytes_read))
goto exit;
pos += bytes_read;
break;
case (5): // time
if (!protobuf_decode_length_delimited(&in[pos], in_size - pos, (char**)&((*out)->time_received), &((*out)->time_received_size), &bytes_read))
goto exit;
pos += bytes_read;
break;
}
}
retVal = 1;
exit:
if (retVal == 0) {
free(*out);
*out = NULL;
}
return retVal;
}
int ipfs_cid_protobuf_decode(unsigned char* buffer, size_t buffer_length, struct Cid** output) {
// short cut for nulls
if (buffer_length == 0) {
*output = NULL;
return 1;
}
size_t pos = 0;
int version = 0;
unsigned char* hash;
size_t hash_length;
char codec = 0;
int retVal = 0;
while(pos < buffer_length) {
size_t bytes_read = 0;
int field_no;
enum WireType field_type;
if (protobuf_decode_field_and_type(&buffer[pos], buffer_length, &field_no, &field_type, &bytes_read) == 0) {
return 0;
}
pos += bytes_read;
switch(field_no) {
case (1):
version = varint_decode(&buffer[pos], buffer_length - pos, &bytes_read);
pos += bytes_read;
break;
case (2):
codec = varint_decode(&buffer[pos], buffer_length - pos, &bytes_read);
pos += bytes_read;
break;
case (3):
retVal = protobuf_decode_length_delimited(&buffer[pos], buffer_length - pos, (char**)&hash, &hash_length, &bytes_read);
if (retVal == 0)
return 0;
pos += bytes_read;
break;
}
}
retVal = ipfs_cid_new(version, hash, hash_length, codec, output);
free(hash);
return retVal;
}
