/**
* @param aConfiguration
* @throws Exception
*/
public ExtProcessPlugIn(PluginConfiguration aConfiguration) throws Exception {
super(aConfiguration);
if (mLog.isDebugEnabled()) {
mLog.debug("Instantiating External Process plug-in...");
}
// specify default name space for file system plugin
this.setNamespace(NS_EXTPROCESS);
try {
mBeanFactory = getConfigBeanFactory();
if (null == mBeanFactory) {
mLog.error(
"No or invalid spring configuration for external process plug-in, some features may not be available.");
} else {
mSettings = (Settings) mBeanFactory.getBean("org.jwebsocket.plugins.extprocess.settings");
// replace all alias values with environment variables
Map<String, String> lAllowedProgs = mSettings.getAllowedProgs();
for (Entry<String, String> lEntry : lAllowedProgs.entrySet()) {
lEntry.setValue(Tools.expandEnvVarsAndProps(lEntry.getValue()));
}
if (mLog.isInfoEnabled()) {
mLog.info("External Process plug-in successfully instantiated.");
}
}
} catch (BeansException lEx) {
mLog.error(Logging.getSimpleExceptionMessage(lEx, "instantiating ExtProcess plug-in"));
throw lEx;
}
}
private void call(WebSocketConnector aConnector, Token aToken) {
TokenServer lServer = getServer();
Token lResponse = createResponse(aToken);
// check if user is allowed to run 'exists' command
/*
if (!hasAuthority(aConnector, NS_EXTPROCESS + ".call")) {
if (mLog.isDebugEnabled()) {
mLog.debug("Returning 'Access denied'...");
}
lServer.sendToken(aConnector, lServer.createAccessDenied(aToken));
return;
}
*/
String lAlias = aToken.getString("alias");
if (null == lAlias) {
lResponse.setInteger("code", -1);
lResponse.setString("msg", "No alias passed.");
lServer.sendToken(aConnector, lResponse);
return;
}
String lCmdLine = mSettings.getAllowedProgs().get(lAlias);
if (null == lCmdLine) {
lResponse.setInteger("code", -1);
lResponse.setString("msg", "Alias '" + lAlias + "' not found.");
lServer.sendToken(aConnector, lResponse);
return;
}
List<?> lArgs = aToken.getList("args");
if (mLog.isDebugEnabled()) {
mLog.debug(
"Processing 'call'"
+ " (alias: "
+ lAlias
+ ", args: "
+ StringUtils.collectionToDelimitedString(lArgs, ", ")
+ ")...");
}
String[] lCmdTokens = StringUtils.tokenizeToStringArray(lCmdLine, " ", true, false);
List<String> lCmd = new ArrayList<String>();
for (String lCmdToken : lCmdTokens) {
for (int lArgIdx = 0; lArgIdx < lArgs.size(); lArgIdx++) {
lCmdToken = lCmdToken.replace("${" + (lArgIdx + 1) + "}", lArgs.get(lArgIdx).toString());
}
lCmd.add(lCmdToken);
}
ProcessBuilder lProcBuilder = new ProcessBuilder(lCmd);
// Map<String, String> lEnv = lProcBuilder.environment();
lProcBuilder.directory(new File(System.getenv("temp")));
try {
if (mLog.isDebugEnabled()) {
mLog.debug("Directory: " + System.getenv("temp"));
}
final Process process = lProcBuilder.start();
InputStream lIS = process.getInputStream();
InputStreamReader lISR = new InputStreamReader(lIS);
BufferedReader lBR = new BufferedReader(lISR);
String lLine;
StringBuilder lStrBuf = new StringBuilder();
while ((lLine = lBR.readLine()) != null) {
Token lEventToken = TokenFactory.createToken(getNamespace(), "event");
lEventToken.setString("line", lLine);
lStrBuf.append(lLine).append("\n");
lServer.sendToken(aConnector, lEventToken);
}
lResponse.setInteger("exitCode", process.exitValue());
if (mLog.isDebugEnabled()) {
mLog.debug("Sent '" + lStrBuf.toString().replace("\n", "\\n") + "'.");
}
} catch (IOException lEx) {
lResponse.setInteger("code", -1);
String lMsg = Logging.getSimpleExceptionMessage(lEx, "calling external process");
lResponse.setString("msg", lMsg);
mLog.error(lMsg);
}
lServer.sendToken(aConnector, lResponse);
}
