diff options
Diffstat (limited to 'src/rest.cpp')
| -rw-r--r-- | src/rest.cpp | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/src/rest.cpp b/src/rest.cpp new file mode 100644 index 0000000000..9a8793a517 --- /dev/null +++ b/src/rest.cpp @@ -0,0 +1,206 @@ +// Copyright (c) 2009-2010 Satoshi Nakamoto +// Copyright (c) 2009-2012 The Bitcoin developers +// Distributed under the MIT/X11 software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#include <boost/algorithm/string.hpp> +#include "rpcserver.h" +#include "streams.h" +#include "utilstrencodings.h" +#include "core/block.h" +#include "core/transaction.h" +#include "version.h" +#include "main.h" +#include "sync.h" + +using namespace std; +using namespace json_spirit; + +enum RetFormat { + RF_BINARY, + RF_HEX, + RF_JSON, +}; + +static const struct { + enum RetFormat rf; + const char *name; +} rf_names[] = { + { RF_BINARY, "binary" }, // default, if match not found + { RF_HEX, "hex" }, + { RF_JSON, "json" }, +}; + +class RestErr { +public: + enum HTTPStatusCode status; + string message; +}; + +extern void TxToJSON(const CTransaction& tx, const uint256 hashBlock, Object& entry); +extern Object blockToJSON(const CBlock& block, const CBlockIndex* blockindex); + +static RestErr RESTERR(enum HTTPStatusCode status, string message) +{ + RestErr re; + re.status = status; + re.message = message; + return re; +} + +static enum RetFormat ParseDataFormat(const string& format) +{ + for (unsigned int i = 0; i < ARRAYLEN(rf_names); i++) + if (format == rf_names[i].name) + return rf_names[i].rf; + + return rf_names[0].rf; +} + +static bool ParseHashStr(const string& strReq, uint256& v) +{ + if (!IsHex(strReq) || (strReq.size() != 64)) + return false; + + v.SetHex(strReq); + return true; +} + +static bool rest_block(AcceptedConnection *conn, + string& strReq, + map<string, string>& mapHeaders, + bool fRun) +{ + vector<string> params; + boost::split(params, strReq, boost::is_any_of("/")); + + enum RetFormat rf = ParseDataFormat(params.size() > 1 ? params[1] : string("")); + + string hashStr = params[0]; + uint256 hash; + if (!ParseHashStr(hashStr, hash)) + throw RESTERR(HTTP_BAD_REQUEST, "Invalid hash: " + hashStr); + + CBlock block; + CBlockIndex* pblockindex = NULL; + { + LOCK(cs_main); + if (mapBlockIndex.count(hash) == 0) + throw RESTERR(HTTP_NOT_FOUND, hashStr + " not found"); + + pblockindex = mapBlockIndex[hash]; + if (!ReadBlockFromDisk(block, pblockindex)) + throw RESTERR(HTTP_NOT_FOUND, hashStr + " not found"); + } + + CDataStream ssBlock(SER_NETWORK, PROTOCOL_VERSION); + ssBlock << block; + + switch (rf) { + case RF_BINARY: { + string binaryBlock = ssBlock.str(); + conn->stream() << HTTPReply(HTTP_OK, binaryBlock, fRun, true, "application/octet-stream") << binaryBlock << std::flush; + return true; + } + + case RF_HEX: { + string strHex = HexStr(ssBlock.begin(), ssBlock.end()) + "\n";; + conn->stream() << HTTPReply(HTTP_OK, strHex, fRun, false, "text/plain") << std::flush; + return true; + } + + case RF_JSON: { + Object objBlock = blockToJSON(block, pblockindex); + string strJSON = write_string(Value(objBlock), false) + "\n"; + conn->stream() << HTTPReply(HTTP_OK, strJSON, fRun) << std::flush; + return true; + } + } + + // not reached + return true; // continue to process further HTTP reqs on this cxn +} + +static bool rest_tx(AcceptedConnection *conn, + string& strReq, + map<string, string>& mapHeaders, + bool fRun) +{ + vector<string> params; + boost::split(params, strReq, boost::is_any_of("/")); + + enum RetFormat rf = ParseDataFormat(params.size() > 1 ? params[1] : string("")); + + string hashStr = params[0]; + uint256 hash; + if (!ParseHashStr(hashStr, hash)) + throw RESTERR(HTTP_BAD_REQUEST, "Invalid hash: " + hashStr); + + CTransaction tx; + uint256 hashBlock = 0; + if (!GetTransaction(hash, tx, hashBlock, true)) + throw RESTERR(HTTP_NOT_FOUND, hashStr + " not found"); + + CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION); + ssTx << tx; + + switch (rf) { + case RF_BINARY: { + string binaryTx = ssTx.str(); + conn->stream() << HTTPReply(HTTP_OK, binaryTx, fRun, true, "application/octet-stream") << binaryTx << std::flush; + return true; + } + + case RF_HEX: { + string strHex = HexStr(ssTx.begin(), ssTx.end()) + "\n";; + conn->stream() << HTTPReply(HTTP_OK, strHex, fRun, false, "text/plain") << std::flush; + return true; + } + + case RF_JSON: { + Object objTx; + TxToJSON(tx, hashBlock, objTx); + string strJSON = write_string(Value(objTx), false) + "\n"; + conn->stream() << HTTPReply(HTTP_OK, strJSON, fRun) << std::flush; + return true; + } + } + + // not reached + return true; // continue to process further HTTP reqs on this cxn +} + +static const struct { + const char *prefix; + bool (*handler)(AcceptedConnection *conn, + string& strURI, + map<string, string>& mapHeaders, + bool fRun); +} uri_prefixes[] = { + { "/rest/tx/", rest_tx }, + { "/rest/block/", rest_block }, +}; + +bool HTTPReq_REST(AcceptedConnection *conn, + string& strURI, + map<string, string>& mapHeaders, + bool fRun) +{ + try { + for (unsigned int i = 0; i < ARRAYLEN(uri_prefixes); i++) { + unsigned int plen = strlen(uri_prefixes[i].prefix); + if (strURI.substr(0, plen) == uri_prefixes[i].prefix) { + string strReq = strURI.substr(plen); + return uri_prefixes[i].handler(conn, strReq, mapHeaders, fRun); + } + } + } + catch (RestErr& re) { + conn->stream() << HTTPReply(re.status, re.message + "\r\n", false, false, "text/plain") << std::flush; + return false; + } + + conn->stream() << HTTPError(HTTP_NOT_FOUND, false) << std::flush; + return false; +} + |