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|
// dbshell.cpp
/*
* Copyright 2010 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kDefault
#include "mongo/platform/basic.h"
#include <boost/filesystem/operations.hpp>
#include <fstream>
#include <iostream>
#include <pcrecpp.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include "mongo/base/initializer.h"
#include "mongo/base/status.h"
#include "mongo/client/dbclientinterface.h"
#include "mongo/client/sasl_client_authenticate.h"
#include "mongo/db/client.h"
#include "mongo/db/log_process_details.h"
#include "mongo/db/server_options.h"
#include "mongo/logger/console_appender.h"
#include "mongo/logger/logger.h"
#include "mongo/logger/message_event_utf8_encoder.h"
#include "mongo/scripting/engine.h"
#include "mongo/shell/linenoise.h"
#include "mongo/shell/shell_options.h"
#include "mongo/shell/shell_utils.h"
#include "mongo/shell/shell_utils_launcher.h"
#include "mongo/util/exit_code.h"
#include "mongo/util/file.h"
#include "mongo/util/log.h"
#include "mongo/util/net/ssl_options.h"
#include "mongo/util/password.h"
#include "mongo/util/quick_exit.h"
#include "mongo/util/scopeguard.h"
#include "mongo/util/signal_handlers.h"
#include "mongo/util/stacktrace.h"
#include "mongo/util/startup_test.h"
#include "mongo/util/static_observer.h"
#include "mongo/util/text.h"
#include "mongo/util/version.h"
#ifdef _WIN32
#include <io.h>
#include <shlobj.h>
#define isatty _isatty
#define fileno _fileno
#else
#include <unistd.h>
#endif
using namespace std;
using namespace mongo;
string historyFile;
bool gotInterrupted = false;
bool inMultiLine = false;
static volatile bool atPrompt = false; // can eval before getting to prompt
namespace mongo {
Scope* shellMainScope;
extern bool dbexitCalled;
}
void generateCompletions(const string& prefix, vector<string>& all) {
if (prefix.find('"') != string::npos)
return;
try {
BSONObj args = BSON("0" << prefix);
shellMainScope->invokeSafe(
"function callShellAutocomplete(x) {shellAutocomplete(x)}", &args, NULL);
BSONObjBuilder b;
shellMainScope->append(b, "", "__autocomplete__");
BSONObj res = b.obj();
BSONObj arr = res.firstElement().Obj();
BSONObjIterator i(arr);
while (i.more()) {
BSONElement e = i.next();
all.push_back(e.String());
}
} catch (...) {
}
}
void completionHook(const char* text, linenoiseCompletions* lc) {
vector<string> all;
generateCompletions(text, all);
for (unsigned i = 0; i < all.size(); ++i)
linenoiseAddCompletion(lc, (char*)all[i].c_str());
}
void shellHistoryInit() {
stringstream ss;
const char* h = shell_utils::getUserDir();
if (h)
ss << h << "/";
ss << ".dbshell";
historyFile = ss.str();
linenoiseHistoryLoad(historyFile.c_str());
linenoiseSetCompletionCallback(completionHook);
}
void shellHistoryDone() {
linenoiseHistorySave(historyFile.c_str());
linenoiseHistoryFree();
}
void shellHistoryAdd(const char* line) {
if (line[0] == '\0')
return;
// dont record duplicate lines
static string lastLine;
if (lastLine == line)
return;
lastLine = line;
// We don't want any .auth() or .createUser() shell helpers added, but we want to
// be able to add things like `.author`, so be smart about how this is
// detected by using regular expresions. This is so we can avoid storing passwords
// in the history file in plaintext.
static pcrecpp::RE hiddenHelpers(
"\\.\\s*(auth|createUser|updateUser|changeUserPassword)\\s*\\(");
// Also don't want the raw user management commands to show in the shell when run directly
// via runCommand.
static pcrecpp::RE hiddenCommands(
"(run|admin)Command\\s*\\(\\s*{\\s*(createUser|updateUser)\\s*:");
if (!hiddenHelpers.PartialMatch(line) && !hiddenCommands.PartialMatch(line)) {
linenoiseHistoryAdd(line);
}
}
void killOps() {
if (mongo::shell_utils::_nokillop)
return;
if (atPrompt)
return;
sleepmillis(10); // give current op a chance to finish
mongo::shell_utils::connectionRegistry.killOperationsOnAllConnections(
!shellGlobalParams.autoKillOp);
}
// Stubs for signal_handlers.cpp
namespace mongo {
void logProcessDetailsForLogRotate() {}
void exitCleanly(ExitCode code) {
{
stdx::lock_guard<stdx::mutex> lk(mongo::shell_utils::mongoProgramOutputMutex);
mongo::dbexitCalled = true;
}
::killOps();
::shellHistoryDone();
quickExit(0);
}
}
void quitNicely(int sig) {
exitCleanly(EXIT_CLEAN);
}
// the returned string is allocated with strdup() or malloc() and must be freed by calling free()
char* shellReadline(const char* prompt, int handlesigint = 0) {
atPrompt = true;
char* ret = linenoise(prompt);
if (!ret) {
gotInterrupted = true; // got ^C, break out of multiline
}
atPrompt = false;
return ret;
}
void setupSignals() {
signal(SIGINT, quitNicely);
}
string fixHost(const std::string& url, const std::string& host, const std::string& port) {
if (host.size() == 0 && port.size() == 0) {
if (url.find("/") == string::npos) {
// check for ips
if (url.find(".") != string::npos)
return url + "/test";
if (url.rfind(":") != string::npos && isdigit(url[url.rfind(":") + 1]))
return url + "/test";
}
return url;
}
if (url.find("/") != string::npos) {
cerr << "url can't have host or port if you specify them individually" << endl;
quickExit(-1);
}
string newurl((host.size() == 0) ? "127.0.0.1" : host);
if (port.size() > 0)
newurl += ":" + port;
else if (host.find(':') == string::npos) {
// need to add port with IPv6 addresses
newurl += ":27017";
}
newurl += "/" + url;
return newurl;
}
static string OpSymbols = "~!%^&*-+=|:,<>/?.";
bool isOpSymbol(char c) {
for (size_t i = 0; i < OpSymbols.size(); i++)
if (OpSymbols[i] == c)
return true;
return false;
}
bool isUseCmd(const std::string& code) {
string cmd = code;
if (cmd.find(" ") > 0)
cmd = cmd.substr(0, cmd.find(" "));
return cmd == "use";
}
/**
* Skip over a quoted string, including quotes escaped with backslash
*
* @param code String
* @param start Starting position within string, always > 0
* @param quote Quote character (single or double quote)
* @return Position of ending quote, or code.size() if no quote found
*/
size_t skipOverString(const std::string& code, size_t start, char quote) {
size_t pos = start;
while (pos < code.size()) {
pos = code.find(quote, pos);
if (pos == std::string::npos) {
return code.size();
}
// We want to break if the quote we found is not escaped, but we need to make sure
// that the escaping backslash is not itself escaped. Comparisons of start and pos
// are to keep us from reading beyond the beginning of the quoted string.
//
if (start == pos || code[pos - 1] != '\\' || // previous char was backslash
start == pos - 1 ||
code[pos - 2] == '\\' // char before backslash was not another
) {
break; // The quote we found was not preceded by an unescaped backslash; it is real
}
++pos; // The quote we found was escaped with backslash, so it doesn't count
}
return pos;
}
bool isBalanced(const std::string& code) {
if (isUseCmd(code))
return true; // don't balance "use <dbname>" in case dbname contains special chars
int curlyBrackets = 0;
int squareBrackets = 0;
int parens = 0;
bool danglingOp = false;
for (size_t i = 0; i < code.size(); i++) {
switch (code[i]) {
case '/':
if (i + 1 < code.size() && code[i + 1] == '/') {
while (i < code.size() && code[i] != '\n')
i++;
}
continue;
case '{':
curlyBrackets++;
break;
case '}':
if (curlyBrackets <= 0)
return true;
curlyBrackets--;
break;
case '[':
squareBrackets++;
break;
case ']':
if (squareBrackets <= 0)
return true;
squareBrackets--;
break;
case '(':
parens++;
break;
case ')':
if (parens <= 0)
return true;
parens--;
break;
case '"':
case '\'':
i = skipOverString(code, i + 1, code[i]);
if (i >= code.size()) {
return true; // Do not let unterminated strings enter multi-line mode
}
break;
case '\\':
if (i + 1 < code.size() && code[i + 1] == '/')
i++;
break;
case '+':
case '-':
if (i + 1 < code.size() && code[i + 1] == code[i]) {
i++;
continue; // postfix op (++/--) can't be a dangling op
}
break;
}
if (i >= code.size()) {
danglingOp = false;
break;
}
if (isOpSymbol(code[i]))
danglingOp = true;
else if (!std::isspace(static_cast<unsigned char>(code[i])))
danglingOp = false;
}
return curlyBrackets == 0 && squareBrackets == 0 && parens == 0 && !danglingOp;
}
struct BalancedTest : public mongo::StartupTest {
public:
void run() {
verify(isBalanced("x = 5"));
verify(isBalanced("function(){}"));
verify(isBalanced("function(){\n}"));
verify(!isBalanced("function(){"));
verify(isBalanced("x = \"{\";"));
verify(isBalanced("// {"));
verify(!isBalanced("// \n {"));
verify(!isBalanced("\"//\" {"));
verify(isBalanced("{x:/x\\//}"));
verify(!isBalanced("{ \\/// }"));
verify(isBalanced("x = 5 + y "));
verify(!isBalanced("x = "));
verify(!isBalanced("x = // hello"));
verify(!isBalanced("x = 5 +"));
verify(isBalanced(" x ++"));
verify(isBalanced("-- x"));
verify(!isBalanced("a."));
verify(!isBalanced("a. "));
verify(isBalanced("a.b"));
// SERVER-5809 and related cases --
verify(isBalanced("a = {s:\"\\\"\"}")); // a = {s:"\""}
verify(isBalanced("db.test.save({s:\"\\\"\"})")); // db.test.save({s:"\""})
verify(isBalanced("printjson(\" \\\" \")")); // printjson(" \" ") -- SERVER-8554
verify(isBalanced("var a = \"\\\\\";")); // var a = "\\";
verify(isBalanced("var a = (\"\\\\\") //\"")); // var a = ("\\") //"
verify(isBalanced("var a = (\"\\\\\") //\\\"")); // var a = ("\\") //\"
verify(isBalanced("var a = (\"\\\\\") //")); // var a = ("\\") //
verify(isBalanced("var a = (\"\\\\\")")); // var a = ("\\")
verify(isBalanced("var a = (\"\\\\\\\"\")")); // var a = ("\\\"")
verify(!isBalanced("var a = (\"\\\\\" //\"")); // var a = ("\\" //"
verify(!isBalanced("var a = (\"\\\\\" //")); // var a = ("\\" //
verify(!isBalanced("var a = (\"\\\\\"")); // var a = ("\\"
}
} balanced_test;
string finishCode(string code) {
while (!isBalanced(code)) {
inMultiLine = true;
code += "\n";
// cancel multiline if two blank lines are entered
if (code.find("\n\n\n") != string::npos)
return ";";
char* line = shellReadline("... ", 1);
if (gotInterrupted) {
if (line)
free(line);
return "";
}
if (!line)
return "";
char* linePtr = line;
while (str::startsWith(linePtr, "... "))
linePtr += 4;
code += linePtr;
free(line);
}
return code;
}
bool execPrompt(mongo::Scope& scope, const char* promptFunction, string& prompt) {
string execStatement = string("__prompt__ = ") + promptFunction + "();";
scope.exec("delete __prompt__;", "", false, false, false, 0);
scope.exec(execStatement, "", false, false, false, 0);
if (scope.type("__prompt__") == String) {
prompt = scope.getString("__prompt__");
return true;
}
return false;
}
/**
* Edit a variable or input buffer text in an external editor -- EDITOR must be defined
*
* @param whatToEdit Name of JavaScript variable to be edited, or any text string
*/
static void edit(const string& whatToEdit) {
// EDITOR may be defined in the JavaScript scope or in the environment
string editor;
if (shellMainScope->type("EDITOR") == String) {
editor = shellMainScope->getString("EDITOR");
} else {
static const char* editorFromEnv = getenv("EDITOR");
if (editorFromEnv) {
editor = editorFromEnv;
}
}
if (editor.empty()) {
cout << "please define EDITOR as a JavaScript string or as an environment variable" << endl;
return;
}
// "whatToEdit" might look like a variable/property name
bool editingVariable = true;
for (const char* p = whatToEdit.c_str(); *p; ++p) {
if (!(isalnum(*p) || *p == '_' || *p == '.')) {
editingVariable = false;
break;
}
}
string js;
if (editingVariable) {
// If "whatToEdit" is undeclared or uninitialized, declare
int varType = shellMainScope->type(whatToEdit.c_str());
if (varType == Undefined) {
shellMainScope->exec("var " + whatToEdit, "(shell)", false, true, false);
}
// Convert "whatToEdit" to JavaScript (JSON) text
if (!shellMainScope->exec(
"__jsout__ = tojson(" + whatToEdit + ")", "tojs", false, false, false))
return; // Error already printed
js = shellMainScope->getString("__jsout__");
if (strstr(js.c_str(), "[native code]")) {
cout << "can't edit native functions" << endl;
return;
}
} else {
js = whatToEdit;
}
// Pick a name to use for the temp file
string filename;
const int maxAttempts = 10;
int i;
for (i = 0; i < maxAttempts; ++i) {
StringBuilder sb;
#ifdef _WIN32
char tempFolder[MAX_PATH];
GetTempPathA(sizeof tempFolder, tempFolder);
sb << tempFolder << "mongo_edit" << time(0) + i << ".js";
#else
sb << "/tmp/mongo_edit" << time(0) + i << ".js";
#endif
filename = sb.str();
if (!::mongo::shell_utils::fileExists(filename))
break;
}
if (i == maxAttempts) {
cout << "couldn't create unique temp file after " << maxAttempts << " attempts" << endl;
return;
}
// Create the temp file
FILE* tempFileStream;
tempFileStream = fopen(filename.c_str(), "wt");
if (!tempFileStream) {
cout << "couldn't create temp file (" << filename << "): " << errnoWithDescription()
<< endl;
return;
}
// Write JSON into the temp file
size_t fileSize = js.size();
if (fwrite(js.data(), sizeof(char), fileSize, tempFileStream) != fileSize) {
int systemErrno = errno;
cout << "failed to write to temp file: " << errnoWithDescription(systemErrno) << endl;
fclose(tempFileStream);
remove(filename.c_str());
return;
}
fclose(tempFileStream);
// Pass file to editor
StringBuilder sb;
sb << editor << " " << filename;
int ret = ::system(sb.str().c_str());
if (ret) {
if (ret == -1) {
int systemErrno = errno;
cout << "failed to launch $EDITOR (" << editor
<< "): " << errnoWithDescription(systemErrno) << endl;
} else
cout << "editor exited with error (" << ret << "), not applying changes" << endl;
remove(filename.c_str());
return;
}
// The editor gave return code zero, so read the file back in
tempFileStream = fopen(filename.c_str(), "rt");
if (!tempFileStream) {
cout << "couldn't open temp file on return from editor: " << errnoWithDescription() << endl;
remove(filename.c_str());
return;
}
sb.reset();
int bytes;
do {
char buf[1024];
bytes = fread(buf, sizeof(char), sizeof buf, tempFileStream);
if (ferror(tempFileStream)) {
cout << "failed to read temp file: " << errnoWithDescription() << endl;
fclose(tempFileStream);
remove(filename.c_str());
return;
}
sb.append(StringData(buf, bytes));
} while (bytes);
// Done with temp file, close and delete it
fclose(tempFileStream);
remove(filename.c_str());
if (editingVariable) {
// Try to execute assignment to copy edited value back into the variable
const string code = whatToEdit + string(" = ") + sb.str();
if (!shellMainScope->exec(code, "tojs", false, true, false)) {
cout << "error executing assignment: " << code << endl;
}
} else {
linenoisePreloadBuffer(sb.str().c_str());
}
}
int _main(int argc, char* argv[], char** envp) {
setupSignalHandlers();
setupSignals();
mongo::shell_utils::RecordMyLocation(argv[0]);
shellGlobalParams.url = "test";
mongo::runGlobalInitializersOrDie(argc, argv, envp);
// hide password from ps output
for (int i = 0; i < (argc - 1); ++i) {
if (!strcmp(argv[i], "-p") || !strcmp(argv[i], "--password")) {
char* arg = argv[i + 1];
while (*arg) {
*arg++ = 'x';
}
}
}
if (!mongo::serverGlobalParams.quiet)
cout << "MongoDB shell version: " << mongo::versionString << endl;
mongo::StartupTest::runTests();
logger::globalLogManager()
->getNamedDomain("javascriptOutput")
->attachAppender(logger::MessageLogDomain::AppenderAutoPtr(
new logger::ConsoleAppender<logger::MessageEventEphemeral>(
new logger::MessageEventUnadornedEncoder)));
if (!shellGlobalParams.nodb) { // connect to db
stringstream ss;
if (mongo::serverGlobalParams.quiet)
ss << "__quiet = true;";
ss << "db = connect( \""
<< fixHost(shellGlobalParams.url, shellGlobalParams.dbhost, shellGlobalParams.port)
<< "\")";
mongo::shell_utils::_dbConnect = ss.str();
if (shellGlobalParams.usingPassword && shellGlobalParams.password.empty()) {
shellGlobalParams.password = mongo::askPassword();
}
}
// Construct the authentication-related code to execute on shell startup.
//
// This constructs and immediately executes an anonymous function, to avoid
// the shell's default behavior of printing statement results to the console.
//
// It constructs a statement of the following form:
//
// (function() {
// // Set default authentication mechanism and, maybe, authenticate.
// }())
stringstream authStringStream;
authStringStream << "(function() { " << endl;
if (!shellGlobalParams.authenticationMechanism.empty()) {
authStringStream << "DB.prototype._defaultAuthenticationMechanism = \""
<< escape(shellGlobalParams.authenticationMechanism) << "\";" << endl;
}
if (!shellGlobalParams.gssapiServiceName.empty()) {
authStringStream << "DB.prototype._defaultGssapiServiceName = \""
<< escape(shellGlobalParams.gssapiServiceName) << "\";" << endl;
}
if (!shellGlobalParams.nodb && shellGlobalParams.username.size()) {
authStringStream << "var username = \"" << escape(shellGlobalParams.username) << "\";"
<< endl;
if (shellGlobalParams.usingPassword) {
authStringStream << "var password = \"" << escape(shellGlobalParams.password) << "\";"
<< endl;
}
if (shellGlobalParams.authenticationDatabase.empty()) {
authStringStream << "var authDb = db;" << endl;
} else {
authStringStream << "var authDb = db.getSiblingDB(\""
<< escape(shellGlobalParams.authenticationDatabase) << "\");" << endl;
}
authStringStream << "authDb._authOrThrow({ " << saslCommandUserFieldName << ": username ";
if (shellGlobalParams.usingPassword) {
authStringStream << ", " << saslCommandPasswordFieldName << ": password ";
}
if (!shellGlobalParams.gssapiHostName.empty()) {
authStringStream << ", " << saslCommandServiceHostnameFieldName << ": \""
<< escape(shellGlobalParams.gssapiHostName) << '"' << endl;
}
authStringStream << "});" << endl;
}
authStringStream << "}())";
mongo::shell_utils::_dbAuth = authStringStream.str();
mongo::ScriptEngine::setConnectCallback(mongo::shell_utils::onConnect);
mongo::ScriptEngine::setup();
mongo::globalScriptEngine->setScopeInitCallback(mongo::shell_utils::initScope);
mongo::globalScriptEngine->enableJIT(!shellGlobalParams.nojit);
mongo::globalScriptEngine->enableJavaScriptProtection(shellGlobalParams.javascriptProtection);
auto poolGuard = MakeGuard([] { ScriptEngine::dropScopeCache(); });
unique_ptr<mongo::Scope> scope(mongo::globalScriptEngine->newScope());
shellMainScope = scope.get();
if (shellGlobalParams.runShell)
cout << "type \"help\" for help" << endl;
// Load and execute /etc/mongorc.js before starting shell
std::string rcGlobalLocation;
#ifndef _WIN32
rcGlobalLocation = "/etc/mongorc.js";
#else
wchar_t programDataPath[MAX_PATH];
if (S_OK == SHGetFolderPathW(NULL, CSIDL_COMMON_APPDATA, NULL, 0, programDataPath)) {
rcGlobalLocation = str::stream() << toUtf8String(programDataPath)
<< "\\MongoDB\\mongorc.js";
}
#endif
if (!rcGlobalLocation.empty() && ::mongo::shell_utils::fileExists(rcGlobalLocation)) {
if (!scope->execFile(rcGlobalLocation, false, true)) {
cout << "The \"" << rcGlobalLocation << "\" file could not be executed" << endl;
}
}
if (!shellGlobalParams.script.empty()) {
mongo::shell_utils::MongoProgramScope s;
if (!scope->exec(shellGlobalParams.script, "(shell eval)", false, true, false))
return -4;
scope->exec("shellPrintHelper( __lastres__ );", "(shell2 eval)", true, true, false);
}
for (size_t i = 0; i < shellGlobalParams.files.size(); ++i) {
mongo::shell_utils::MongoProgramScope s;
if (shellGlobalParams.files.size() > 1)
cout << "loading file: " << shellGlobalParams.files[i] << endl;
if (!scope->execFile(shellGlobalParams.files[i], false, true)) {
cout << "failed to load: " << shellGlobalParams.files[i] << endl;
return -3;
}
}
if (shellGlobalParams.files.size() == 0 && shellGlobalParams.script.empty())
shellGlobalParams.runShell = true;
bool lastLineSuccessful = true;
if (shellGlobalParams.runShell) {
mongo::shell_utils::MongoProgramScope s;
// If they specify norc, assume it's not their first time
bool hasMongoRC = shellGlobalParams.norc;
string rcLocation;
if (!shellGlobalParams.norc) {
#ifndef _WIN32
if (getenv("HOME") != NULL)
rcLocation = str::stream() << getenv("HOME") << "/.mongorc.js";
#else
if (getenv("HOMEDRIVE") != NULL && getenv("HOMEPATH") != NULL)
rcLocation = str::stream() << toUtf8String(_wgetenv(L"HOMEDRIVE"))
<< toUtf8String(_wgetenv(L"HOMEPATH"))
<< "\\.mongorc.js";
#endif
if (!rcLocation.empty() && ::mongo::shell_utils::fileExists(rcLocation)) {
hasMongoRC = true;
if (!scope->execFile(rcLocation, false, true)) {
cout << "The \".mongorc.js\" file located in your home folder could not be "
"executed" << endl;
return -5;
}
}
}
if (!hasMongoRC && isatty(fileno(stdin))) {
cout
<< "Welcome to the MongoDB shell.\n"
"For interactive help, type \"help\".\n"
"For more comprehensive documentation, see\n\thttp://docs.mongodb.org/\n"
"Questions? Try the support group\n\thttp://groups.google.com/group/mongodb-user"
<< endl;
File f;
f.open(rcLocation.c_str(), false); // Create empty .mongorc.js file
}
if (!shellGlobalParams.nodb && !mongo::serverGlobalParams.quiet && isatty(fileno(stdin))) {
scope->exec(
"shellHelper( 'show', 'startupWarnings' )", "(shellwarnings", false, true, false);
}
shellHistoryInit();
string prompt;
int promptType;
while (1) {
inMultiLine = false;
gotInterrupted = false;
promptType = scope->type("prompt");
if (promptType == String) {
prompt = scope->getString("prompt");
} else if ((promptType == Code) && execPrompt(*scope, "prompt", prompt)) {
} else if (execPrompt(*scope, "defaultPrompt", prompt)) {
} else {
prompt = "> ";
}
char* line = shellReadline(prompt.c_str());
char* linePtr = line; // can't clobber 'line', we need to free() it later
if (linePtr) {
while (linePtr[0] == ' ')
++linePtr;
int lineLen = strlen(linePtr);
while (lineLen > 0 && linePtr[lineLen - 1] == ' ')
linePtr[--lineLen] = 0;
}
if (!linePtr || (strlen(linePtr) == 4 && strstr(linePtr, "exit"))) {
if (!mongo::serverGlobalParams.quiet)
cout << "bye" << endl;
if (line)
free(line);
break;
}
string code = linePtr;
if (code == "exit" || code == "exit;") {
free(line);
break;
}
if (code == "cls") {
free(line);
linenoiseClearScreen();
continue;
}
if (code.size() == 0) {
free(line);
continue;
}
if (str::startsWith(linePtr, "edit ")) {
shellHistoryAdd(linePtr);
const char* s = linePtr + 5; // skip "edit "
while (*s && isspace(*s))
s++;
edit(s);
free(line);
continue;
}
gotInterrupted = false;
code = finishCode(code);
if (gotInterrupted) {
cout << endl;
free(line);
continue;
}
if (code.size() == 0) {
free(line);
break;
}
bool wascmd = false;
{
string cmd = linePtr;
string::size_type firstSpace;
if ((firstSpace = cmd.find(" ")) != string::npos)
cmd = cmd.substr(0, firstSpace);
if (cmd.find("\"") == string::npos) {
try {
lastLineSuccessful =
scope->exec((string) "__iscmd__ = shellHelper[\"" + cmd + "\"];",
"(shellhelp1)",
false,
true,
true);
if (scope->getBoolean("__iscmd__")) {
lastLineSuccessful =
scope->exec((string) "shellHelper( \"" + cmd + "\" , \"" +
code.substr(cmd.size()) + "\");",
"(shellhelp2)",
false,
true,
false);
wascmd = true;
}
} catch (std::exception& e) {
cout << "error2:" << e.what() << endl;
wascmd = true;
lastLineSuccessful = false;
}
}
}
if (!wascmd) {
try {
lastLineSuccessful = scope->exec(code.c_str(), "(shell)", false, true, false);
if (lastLineSuccessful) {
scope->exec(
"shellPrintHelper( __lastres__ );", "(shell2)", true, true, false);
}
} catch (std::exception& e) {
cout << "error:" << e.what() << endl;
lastLineSuccessful = false;
}
}
shellHistoryAdd(code.c_str());
free(line);
}
shellHistoryDone();
}
{
stdx::lock_guard<stdx::mutex> lk(mongo::shell_utils::mongoProgramOutputMutex);
mongo::dbexitCalled = true;
}
return (lastLineSuccessful ? 0 : 1);
}
#ifdef _WIN32
int wmain(int argc, wchar_t* argvW[], wchar_t* envpW[]) {
static mongo::StaticObserver staticObserver;
int returnCode;
try {
WindowsCommandLine wcl(argc, argvW, envpW);
returnCode = _main(argc, wcl.argv(), wcl.envp());
} catch (mongo::DBException& e) {
cerr << "exception: " << e.what() << endl;
returnCode = 1;
}
quickExit(returnCode);
}
#else // #ifdef _WIN32
int main(int argc, char* argv[], char** envp) {
static mongo::StaticObserver staticObserver;
int returnCode;
try {
returnCode = _main(argc, argv, envp);
} catch (mongo::DBException& e) {
cerr << "exception: " << e.what() << endl;
returnCode = 1;
}
quickExit(returnCode);
}
#endif // #ifdef _WIN32
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