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// Copyright (c) 2010 Satoshi Nakamoto
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// Copyright (c) 2009-2014 The Bitcoin developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "rpcprotocol.h"
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#include "util.h"
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#include <stdint.h>
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#include <boost/algorithm/string.hpp>
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#include <boost/asio.hpp>
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#include <boost/asio/ssl.hpp>
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#include <boost/bind.hpp>
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#include <boost/filesystem.hpp>
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#include <boost/foreach.hpp>
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#include <boost/iostreams/concepts.hpp>
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#include <boost/iostreams/stream.hpp>
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#include <boost/shared_ptr.hpp>
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#include "json/json_spirit_writer_template.h"
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using namespace std;
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using namespace boost;
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using namespace boost::asio;
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using namespace json_spirit;
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//
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// HTTP protocol
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//
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// This ain't Apache. We're just using HTTP header for the length field
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// and to be compatible with other JSON-RPC implementations.
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//
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string HTTPPost(const string& strMsg, const map<string,string>& mapRequestHeaders)
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{
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ostringstream s;
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s << "POST / HTTP/1.1\r\n"
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<< "User-Agent: bitcoin-json-rpc/" << FormatFullVersion() << "\r\n"
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<< "Host: 127.0.0.1\r\n"
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<< "Content-Type: application/json\r\n"
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<< "Content-Length: " << strMsg.size() << "\r\n"
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<< "Connection: close\r\n"
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<< "Accept: application/json\r\n";
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BOOST_FOREACH(const PAIRTYPE(string, string)& item, mapRequestHeaders)
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s << item.first << ": " << item.second << "\r\n";
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s << "\r\n" << strMsg;
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return s.str();
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}
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static string rfc1123Time()
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{
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char buffer[64];
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time_t now;
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time(&now);
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struct tm* now_gmt = gmtime(&now);
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string locale(setlocale(LC_TIME, NULL));
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setlocale(LC_TIME, "C"); // we want POSIX (aka "C") weekday/month strings
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strftime(buffer, sizeof(buffer), "%a, %d %b %Y %H:%M:%S +0000", now_gmt);
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setlocale(LC_TIME, locale.c_str());
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return string(buffer);
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}
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string HTTPReply(int nStatus, const string& strMsg, bool keepalive)
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{
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if (nStatus == HTTP_UNAUTHORIZED)
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return strprintf("HTTP/1.0 401 Authorization Required\r\n"
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"Date: %s\r\n"
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"Server: bitcoin-json-rpc/%s\r\n"
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"WWW-Authenticate: Basic realm=\"jsonrpc\"\r\n"
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"Content-Type: text/html\r\n"
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"Content-Length: 296\r\n"
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"\r\n"
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"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\"\r\n"
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"\"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd\">\r\n"
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"<HTML>\r\n"
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"<HEAD>\r\n"
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"<TITLE>Error</TITLE>\r\n"
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"<META HTTP-EQUIV='Content-Type' CONTENT='text/html; charset=ISO-8859-1'>\r\n"
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"</HEAD>\r\n"
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"<BODY><H1>401 Unauthorized.</H1></BODY>\r\n"
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"</HTML>\r\n", rfc1123Time(), FormatFullVersion());
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const char *cStatus;
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if (nStatus == HTTP_OK) cStatus = "OK";
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else if (nStatus == HTTP_BAD_REQUEST) cStatus = "Bad Request";
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else if (nStatus == HTTP_FORBIDDEN) cStatus = "Forbidden";
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else if (nStatus == HTTP_NOT_FOUND) cStatus = "Not Found";
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else if (nStatus == HTTP_INTERNAL_SERVER_ERROR) cStatus = "Internal Server Error";
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else cStatus = "";
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return strprintf(
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"HTTP/1.1 %d %s\r\n"
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"Date: %s\r\n"
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"Connection: %s\r\n"
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"Content-Length: %"PRIszu"\r\n"
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"Content-Type: application/json\r\n"
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"Server: bitcoin-json-rpc/%s\r\n"
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"\r\n"
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"%s",
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nStatus,
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cStatus,
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rfc1123Time(),
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keepalive ? "keep-alive" : "close",
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strMsg.size(),
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FormatFullVersion(),
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strMsg);
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}
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bool ReadHTTPRequestLine(std::basic_istream<char>& stream, int &proto,
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string& http_method, string& http_uri)
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{
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string str;
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getline(stream, str);
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// HTTP request line is space-delimited
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vector<string> vWords;
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boost::split(vWords, str, boost::is_any_of(" "));
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if (vWords.size() < 2)
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return false;
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// HTTP methods permitted: GET, POST
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http_method = vWords[0];
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if (http_method != "GET" && http_method != "POST")
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return false;
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// HTTP URI must be an absolute path, relative to current host
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http_uri = vWords[1];
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if (http_uri.size() == 0 || http_uri[0] != '/')
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return false;
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// parse proto, if present
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string strProto = "";
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if (vWords.size() > 2)
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strProto = vWords[2];
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proto = 0;
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const char *ver = strstr(strProto.c_str(), "HTTP/1.");
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if (ver != NULL)
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proto = atoi(ver+7);
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return true;
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}
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int ReadHTTPStatus(std::basic_istream<char>& stream, int &proto)
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{
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string str;
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getline(stream, str);
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vector<string> vWords;
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boost::split(vWords, str, boost::is_any_of(" "));
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if (vWords.size() < 2)
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return HTTP_INTERNAL_SERVER_ERROR;
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proto = 0;
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const char *ver = strstr(str.c_str(), "HTTP/1.");
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if (ver != NULL)
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proto = atoi(ver+7);
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return atoi(vWords[1].c_str());
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}
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int ReadHTTPHeaders(std::basic_istream<char>& stream, map<string, string>& mapHeadersRet)
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{
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int nLen = 0;
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while (true)
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{
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string str;
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std::getline(stream, str);
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if (str.empty() || str == "\r")
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break;
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string::size_type nColon = str.find(":");
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if (nColon != string::npos)
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{
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string strHeader = str.substr(0, nColon);
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boost::trim(strHeader);
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boost::to_lower(strHeader);
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string strValue = str.substr(nColon+1);
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boost::trim(strValue);
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mapHeadersRet[strHeader] = strValue;
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if (strHeader == "content-length")
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nLen = atoi(strValue.c_str());
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}
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}
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return nLen;
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}
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int ReadHTTPMessage(std::basic_istream<char>& stream, map<string,
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string>& mapHeadersRet, string& strMessageRet,
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int nProto)
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{
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mapHeadersRet.clear();
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strMessageRet = "";
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// Read header
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int nLen = ReadHTTPHeaders(stream, mapHeadersRet);
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if (nLen < 0 || nLen > (int)MAX_SIZE)
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return HTTP_INTERNAL_SERVER_ERROR;
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// Read message
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if (nLen > 0)
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{
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vector<char> vch(nLen);
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stream.read(&vch[0], nLen);
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strMessageRet = string(vch.begin(), vch.end());
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}
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string sConHdr = mapHeadersRet["connection"];
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if ((sConHdr != "close") && (sConHdr != "keep-alive"))
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{
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if (nProto >= 1)
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mapHeadersRet["connection"] = "keep-alive";
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else
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mapHeadersRet["connection"] = "close";
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}
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return HTTP_OK;
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}
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//
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// JSON-RPC protocol. Bitcoin speaks version 1.0 for maximum compatibility,
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// but uses JSON-RPC 1.1/2.0 standards for parts of the 1.0 standard that were
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// unspecified (HTTP errors and contents of 'error').
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//
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// 1.0 spec: http://json-rpc.org/wiki/specification
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// 1.2 spec: http://jsonrpc.org/historical/json-rpc-over-http.html
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// http://www.codeproject.com/KB/recipes/JSON_Spirit.aspx
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//
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string JSONRPCRequest(const string& strMethod, const Array& params, const Value& id)
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{
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Object request;
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request.push_back(Pair("method", strMethod));
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request.push_back(Pair("params", params));
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request.push_back(Pair("id", id));
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return write_string(Value(request), false) + "\n";
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}
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Object JSONRPCReplyObj(const Value& result, const Value& error, const Value& id)
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{
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Object reply;
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if (error.type() != null_type)
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reply.push_back(Pair("result", Value::null));
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else
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reply.push_back(Pair("result", result));
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reply.push_back(Pair("error", error));
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reply.push_back(Pair("id", id));
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return reply;
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}
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string JSONRPCReply(const Value& result, const Value& error, const Value& id)
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{
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Object reply = JSONRPCReplyObj(result, error, id);
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return write_string(Value(reply), false) + "\n";
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}
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Object JSONRPCError(int code, const string& message)
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{
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Object error;
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error.push_back(Pair("code", code));
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error.push_back(Pair("message", message));
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return error;
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}
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