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@ -13,7 +13,6 @@ |
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#include <QUrl> |
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#include <QUrl> |
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#include <QScrollBar> |
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#include <QScrollBar> |
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#include <boost/tokenizer.hpp> |
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#include <openssl/crypto.h> |
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#include <openssl/crypto.h> |
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// TODO: make it possible to filter out categories (esp debug messages when implemented)
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// TODO: make it possible to filter out categories (esp debug messages when implemented)
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@ -54,34 +53,114 @@ void RPCExecutor::start() |
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// Nothing to do
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// Nothing to do
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} |
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} |
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void RPCExecutor::request(const QString &command) |
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/**
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{ |
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* Split shell command line into a list of arguments. Aims to emulate \c bash and friends. |
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// Parse shell-like command line into separate arguments
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* |
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std::string strMethod; |
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* - Arguments are delimited with whitespace |
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std::vector<std::string> strParams; |
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* - Extra whitespace at the beginning and end and between arguments will be ignored |
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try { |
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* - Arguments can be "double" or 'single' quoted. Those are treated the same. |
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boost::escaped_list_separator<char> els('\\',' ','\"'); |
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* - The backslash '\' is used as escape character |
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std::string strCommand = command.toStdString(); |
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* - Outside quotes, any character can be escaped |
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boost::tokenizer<boost::escaped_list_separator<char> > tok(strCommand, els); |
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* - Within double quotes, only escape double quotes with \" and backslashes with \\ |
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* - Within single quotes, only escape single quotes with \' and backslashes with \\ |
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int n = 0; |
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* |
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for(boost::tokenizer<boost::escaped_list_separator<char> >::iterator beg=tok.begin(); beg!=tok.end();++beg,++n) |
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* @param[out] args Parsed arguments will be appended to this list |
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{ |
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* @param[in] strCommand Command line to split |
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if(n == 0) // First parameter is the command
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*/ |
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strMethod = *beg; |
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bool parseCommandLine(std::vector<std::string> &args, const std::string &strCommand) |
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else |
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{ |
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strParams.push_back(*beg); |
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enum CmdParseState |
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{ |
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STATE_EATING_SPACES, |
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STATE_ARGUMENT, |
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STATE_SINGLEQUOTED, |
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STATE_DOUBLEQUOTED, |
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STATE_ESCAPE_OUTER, |
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STATE_ESCAPE_SINGLEQUOTED, |
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STATE_ESCAPE_DOUBLEQUOTED |
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} state = STATE_EATING_SPACES; |
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std::string curarg; |
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foreach(char ch, strCommand) |
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{ |
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switch(state) |
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{ |
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case STATE_ARGUMENT: // After argument
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case STATE_EATING_SPACES: // Handle runs of spaces
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switch(ch) |
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{ |
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case '"': state = STATE_DOUBLEQUOTED; break; |
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case '\'': state = STATE_SINGLEQUOTED; break; |
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case '\\': state = STATE_ESCAPE_OUTER; break; |
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case ' ': case '\n': case '\t': |
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if(state == STATE_ARGUMENT) // Space ends argument
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{ |
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args.push_back(curarg); |
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curarg.clear(); |
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} |
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state = STATE_EATING_SPACES; |
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break; |
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default: curarg += ch; state = STATE_ARGUMENT; |
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} |
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break; |
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case STATE_SINGLEQUOTED: // Single-quoted string
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switch(ch) |
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{ |
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case '\'': state = STATE_ARGUMENT; break; |
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case '\\': state = STATE_ESCAPE_SINGLEQUOTED; break; |
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default: curarg += ch; |
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} |
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break; |
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case STATE_DOUBLEQUOTED: // Double-quoted string
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switch(ch) |
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{ |
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case '"': state = STATE_ARGUMENT; break; |
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case '\\': state = STATE_ESCAPE_DOUBLEQUOTED; break; |
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default: curarg += ch; |
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} |
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break; |
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case STATE_ESCAPE_OUTER: // '\' outside quotes
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curarg += ch; state = STATE_ARGUMENT; |
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break; |
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case STATE_ESCAPE_SINGLEQUOTED: // '\' in single-quoted text
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if(ch != '\'') curarg += '\\'; // keep '\' for everything but the quote
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curarg += ch; state = STATE_SINGLEQUOTED; |
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break; |
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case STATE_ESCAPE_DOUBLEQUOTED: // '\' in double-quoted text
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if(ch != '"') curarg += '\\'; // keep '\' for everything but the quote
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curarg += ch; state = STATE_DOUBLEQUOTED; |
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break; |
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} |
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} |
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switch(state) // final state
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{ |
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case STATE_EATING_SPACES: |
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return true; |
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case STATE_ARGUMENT: |
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args.push_back(curarg); |
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return true; |
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default: // ERROR to end in one of the other states
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return false; |
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} |
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} |
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} |
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} |
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catch(boost::escaped_list_error &e) |
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void RPCExecutor::request(const QString &command) |
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{ |
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{ |
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emit reply(RPCConsole::CMD_ERROR, QString("Parse error")); |
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std::vector<std::string> args; |
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if(!parseCommandLine(args, command.toStdString())) |
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{ |
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emit reply(RPCConsole::CMD_ERROR, QString("Parse error: unbalanced ' or \"")); |
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return; |
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return; |
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} |
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} |
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if(args.empty()) |
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try { |
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return; // Nothing to do
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try |
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{ |
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std::string strPrint; |
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std::string strPrint; |
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json_spirit::Value result = tableRPC.execute(strMethod, RPCConvertValues(strMethod, strParams)); |
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// Convert argument list to JSON objects in method-dependent way,
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// and pass it along with the method name to the dispatcher.
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json_spirit::Value result = tableRPC.execute( |
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args[0], |
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RPCConvertValues(args[0], std::vector<std::string>(args.begin() + 1, args.end()))); |
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// Format result reply
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// Format result reply
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if (result.type() == json_spirit::null_type) |
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if (result.type() == json_spirit::null_type) |
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@ -95,8 +174,18 @@ void RPCExecutor::request(const QString &command) |
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} |
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} |
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catch (json_spirit::Object& objError) |
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catch (json_spirit::Object& objError) |
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{ |
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{ |
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try // Nice formatting for standard-format error
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{ |
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int code = find_value(objError, "code").get_int(); |
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std::string message = find_value(objError, "message").get_str(); |
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emit reply(RPCConsole::CMD_ERROR, QString::fromStdString(message) + " (code " + QString::number(code) + ")"); |
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} |
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catch(std::runtime_error &) // raised when converting to invalid type, i.e. missing code or message
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{ |
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// Show raw JSON object
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emit reply(RPCConsole::CMD_ERROR, QString::fromStdString(write_string(json_spirit::Value(objError), false))); |
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emit reply(RPCConsole::CMD_ERROR, QString::fromStdString(write_string(json_spirit::Value(objError), false))); |
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} |
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} |
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} |
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catch (std::exception& e) |
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catch (std::exception& e) |
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{ |
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{ |
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emit reply(RPCConsole::CMD_ERROR, QString("Error: ") + QString::fromStdString(e.what())); |
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emit reply(RPCConsole::CMD_ERROR, QString("Error: ") + QString::fromStdString(e.what())); |
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