/**
* The entry point for the "console" CLI command.
*
* @returns An exit status.
*/
int ConsoleCommand::Run(const po::variables_map& vm, const std::vector<std::string>& ap) const
{
#ifdef HAVE_EDITLINE
rl_completion_entry_function = ConsoleCommand::ConsoleCompleteHelper;
rl_completion_append_character = '\0';
#endif /* HAVE_EDITLINE */
String addr, session;
ScriptFrame scriptFrame(true);
session = Utility::NewUniqueID();
if (vm.count("sandbox"))
scriptFrame.Sandboxed = true;
scriptFrame.Self = scriptFrame.Locals;
if (!vm.count("eval") && !vm.count("file"))
std::cout << "Icinga 2 (version: " << Application::GetAppVersion() << ")\n"
<< "Type $help to view available commands.\n";
String addrEnv = Utility::GetFromEnvironment("ICINGA2_API_URL");
if (!addrEnv.IsEmpty())
addr = addrEnv;
/* Initialize remote connect parameters. */
if (vm.count("connect")) {
addr = vm["connect"].as<std::string>();
try {
l_Url = new Url(addr);
} catch (const std::exception& ex) {
Log(LogCritical, "ConsoleCommand", ex.what());
return EXIT_FAILURE;
}
String usernameEnv = Utility::GetFromEnvironment("ICINGA2_API_USERNAME");
String passwordEnv = Utility::GetFromEnvironment("ICINGA2_API_PASSWORD");
if (!usernameEnv.IsEmpty())
l_Url->SetUsername(usernameEnv);
if (!passwordEnv.IsEmpty())
l_Url->SetPassword(passwordEnv);
if (l_Url->GetPort().IsEmpty())
l_Url->SetPort("5665");
/* User passed --connect and wants to run the expression via REST API.
* Evaluate this now before any user input happens.
*/
try {
l_TlsStream = ConsoleCommand::Connect();
} catch (const std::exception& ex) {
return EXIT_FAILURE;
}
}
String command;
bool syntaxOnly = false;
if (vm.count("syntax-only")) {
if (vm.count("eval") || vm.count("file"))
syntaxOnly = true;
else {
std::cerr << "The option --syntax-only can only be used in combination with --eval or --file." << std::endl;
return EXIT_FAILURE;
}
}
String commandFileName;
if (vm.count("eval"))
command = vm["eval"].as<std::string>();
else if (vm.count("file")) {
commandFileName = vm["file"].as<std::string>();
try {
std::ifstream fp(commandFileName.CStr());
fp.exceptions(std::ifstream::failbit | std::ifstream::badbit);
command = String(std::istreambuf_iterator<char>(fp), std::istreambuf_iterator<char>());
} catch (const std::exception&) {
std::cerr << "Could not read file '" << commandFileName << "'." << std::endl;
return EXIT_FAILURE;
}
}
return RunScriptConsole(scriptFrame, addr, session, command, commandFileName, syntaxOnly);
}
int ConsoleCommand::RunScriptConsole(ScriptFrame& scriptFrame, const String& addr, const String& session, const String& commandOnce, const String& commandOnceFileName, bool syntaxOnly)
{
std::map<String, String> lines;
int next_line = 1;
#ifdef HAVE_EDITLINE
char *homeEnv = getenv("HOME");
String historyPath;
std::fstream historyfp;
if (homeEnv) {
historyPath = String(homeEnv) + "/.icinga2_history";
historyfp.open(historyPath.CStr(), std::fstream::in);
String line;
while (std::getline(historyfp, line.GetData()))
add_history(line.CStr());
historyfp.close();
}
#endif /* HAVE_EDITLINE */
l_ScriptFrame = &scriptFrame;
l_Session = session;
if (!addr.IsEmpty()) {
Url::Ptr url;
try {
url = new Url(addr);
} catch (const std::exception& ex) {
Log(LogCritical, "ConsoleCommand", ex.what());
return EXIT_FAILURE;
}
const char *usernameEnv = getenv("ICINGA2_API_USERNAME");
const char *passwordEnv = getenv("ICINGA2_API_PASSWORD");
if (usernameEnv)
url->SetUsername(usernameEnv);
if (passwordEnv)
url->SetPassword(passwordEnv);
if (url->GetPort().IsEmpty())
url->SetPort("5665");
l_ApiClient = new ApiClient(url->GetHost(), url->GetPort(), url->GetUsername(), url->GetPassword());
}
while (std::cin.good()) {
String fileName;
if (commandOnceFileName.IsEmpty())
fileName = "<" + Convert::ToString(next_line) + ">";
else
fileName = commandOnceFileName;
next_line++;
bool continuation = false;
std::string command;
incomplete:
std::string line;
if (commandOnce.IsEmpty()) {
#ifdef HAVE_EDITLINE
std::ostringstream promptbuf;
std::ostream& os = promptbuf;
#else /* HAVE_EDITLINE */
std::ostream& os = std::cout;
#endif /* HAVE_EDITLINE */
os << fileName;
if (!continuation)
os << " => ";
else
os << " .. ";
#ifdef HAVE_EDITLINE
String prompt = promptbuf.str();
char *cline;
cline = readline(prompt.CStr());
if (!cline)
break;
if (commandOnce.IsEmpty() && cline[0] != '\0') {
add_history(cline);
if (!historyPath.IsEmpty()) {
historyfp.open(historyPath.CStr(), std::fstream::out | std::fstream::app);
historyfp << cline << "\n";
historyfp.close();
}
}
line = cline;
free(cline);
#else /* HAVE_EDITLINE */
std::getline(std::cin, line);
#endif /* HAVE_EDITLINE */
} else
line = commandOnce;
if (!line.empty() && line[0] == '$') {
if (line == "$continue" || line == "$quit" || line == "$exit")
break;
else if (line == "$help")
std::cout << "Welcome to the Icinga 2 debug console.\n"
"Usable commands:\n"
" $continue Continue running Icinga 2 (script debugger).\n"
" $quit, $exit Stop debugging and quit the console.\n"
" $help Print this help.\n\n"
"For more information on how to use this console, please consult the documentation at https://icinga.com/docs\n";
else
std::cout << "Unknown debugger command: " << line << "\n";
continue;
}
if (!command.empty())
command += "\n";
command += line;
std::unique_ptr<Expression> expr;
try {
lines[fileName] = command;
Value result;
if (!l_ApiClient) {
expr = ConfigCompiler::CompileText(fileName, command);
/* This relies on the fact that - for syntax errors - CompileText()
* returns an AST where the top-level expression is a 'throw'. */
if (!syntaxOnly || dynamic_cast<ThrowExpression *>(expr.get())) {
if (syntaxOnly)
std::cerr << " => " << command << std::endl;
result = Serialize(expr->Evaluate(scriptFrame), 0);
} else
result = true;
} else {
boost::mutex mutex;
boost::condition_variable cv;
bool ready = false;
boost::exception_ptr eptr;
l_ApiClient->ExecuteScript(l_Session, command, scriptFrame.Sandboxed,
std::bind(&ConsoleCommand::ExecuteScriptCompletionHandler,
std::ref(mutex), std::ref(cv), std::ref(ready),
_1, _2,
std::ref(result), std::ref(eptr)));
{
boost::mutex::scoped_lock lock(mutex);
while (!ready)
cv.wait(lock);
}
if (eptr)
boost::rethrow_exception(eptr);
}
if (commandOnce.IsEmpty()) {
std::cout << ConsoleColorTag(Console_ForegroundCyan);
ConfigWriter::EmitValue(std::cout, 1, result);
std::cout << ConsoleColorTag(Console_Normal) << "\n";
} else {
std::cout << JsonEncode(result) << "\n";
break;
}
} catch (const ScriptError& ex) {
if (ex.IsIncompleteExpression() && commandOnce.IsEmpty()) {
continuation = true;
goto incomplete;
}
DebugInfo di = ex.GetDebugInfo();
if (commandOnceFileName.IsEmpty() && lines.find(di.Path) != lines.end()) {
String text = lines[di.Path];
std::vector<String> ulines = text.Split("\n");
for (int i = 1; i <= ulines.size(); i++) {
int start, len;
if (i == di.FirstLine)
start = di.FirstColumn;
else
start = 0;
if (i == di.LastLine)
len = di.LastColumn - di.FirstColumn + 1;
else
len = ulines[i - 1].GetLength();
int offset;
if (di.Path != fileName) {
std::cout << di.Path << ": " << ulines[i - 1] << "\n";
offset = 2;
} else
offset = 4;
if (i >= di.FirstLine && i <= di.LastLine) {
std::cout << String(di.Path.GetLength() + offset, ' ');
std::cout << String(start, ' ') << String(len, '^') << "\n";
}
}
} else {
ShowCodeLocation(std::cout, di);
}
std::cout << ex.what() << "\n";
if (!commandOnce.IsEmpty())
return EXIT_FAILURE;
} catch (const std::exception& ex) {
std::cout << "Error: " << DiagnosticInformation(ex) << "\n";
if (!commandOnce.IsEmpty())
return EXIT_FAILURE;
}
}
return EXIT_SUCCESS;
}
