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REST: add "blockhashbyheight" call, fetch blockhash by height

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Jonas Schnelli 2018-09-29 21:43:44 +02:00
parent c9327306b5
commit eb9ef04c4e
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GPG key ID: 1EB776BB03C7922D
1 changed files with 47 additions and 0 deletions
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47
src/rest.cpp
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@ -577,6 +577,52 @@ static bool rest_getutxos(HTTPRequest* req, const std::string& strURIPart)
}
}
static bool rest_blockhash_by_height(HTTPRequest* req,
const std::string& str_uri_part)
{
if (!CheckWarmup(req)) return false;
std::string height_str;
const RetFormat rf = ParseDataFormat(height_str, str_uri_part);
int32_t blockheight;
if (!ParseInt32(height_str, &blockheight) || blockheight < 0) {
return RESTERR(req, HTTP_BAD_REQUEST, "Invalid height: " + SanitizeString(height_str));
}
CBlockIndex* pblockindex = nullptr;
{
LOCK(cs_main);
if (blockheight > chainActive.Height()) {
return RESTERR(req, HTTP_NOT_FOUND, "Block height out of range");
}
pblockindex = chainActive[blockheight];
}
switch (rf) {
case RetFormat::BINARY: {
CDataStream ss_blockhash(SER_NETWORK, PROTOCOL_VERSION);
ss_blockhash << pblockindex->GetBlockHash();
req->WriteHeader("Content-Type", "application/octet-stream");
req->WriteReply(HTTP_OK, ss_blockhash.str());
return true;
}
case RetFormat::HEX: {
req->WriteHeader("Content-Type", "text/plain");
req->WriteReply(HTTP_OK, pblockindex->GetBlockHash().GetHex() + "\n");
return true;
}
case RetFormat::JSON: {
req->WriteHeader("Content-Type", "application/json");
UniValue resp = UniValue(UniValue::VOBJ);
resp.pushKV("blockhash", pblockindex->GetBlockHash().GetHex());
req->WriteReply(HTTP_OK, resp.write() + "\n");
return true;
}
default: {
return RESTERR(req, HTTP_NOT_FOUND, "output format not found (available: " + AvailableDataFormatsString() + ")");
}
}
}
static const struct {
const char* prefix;
bool (*handler)(HTTPRequest* req, const std::string& strReq);
@ -589,6 +635,7 @@ static const struct {
{"/rest/mempool/contents", rest_mempool_contents},
{"/rest/headers/", rest_headers},
{"/rest/getutxos", rest_getutxos},
{"/rest/blockhashbyheight/", rest_blockhash_by_height},
};
void StartREST()