/**
* Starts a native process on the server
*
* @param command the command to start the process
* @param dir the dir in which the process starts
*/
static String startProcess(String command, String dir) throws IOException {
StringBuffer ret = new StringBuffer();
String[] comm = new String[3];
comm[0] = COMMAND_INTERPRETER[0];
comm[1] = COMMAND_INTERPRETER[1];
comm[2] = command;
long start = System.currentTimeMillis();
try {
// Start process
Process ls_proc = Runtime.getRuntime().exec(comm, null, new File(dir));
// Get input and error streams
BufferedInputStream ls_in = new BufferedInputStream(ls_proc.getInputStream());
BufferedInputStream ls_err = new BufferedInputStream(ls_proc.getErrorStream());
boolean end = false;
while (!end) {
int c = 0;
while ((ls_err.available() > 0) && (++c <= 1000)) {
ret.append(conv2Html(ls_err.read()));
}
c = 0;
while ((ls_in.available() > 0) && (++c <= 1000)) {
ret.append(conv2Html(ls_in.read()));
}
try {
ls_proc.exitValue();
// if the process has not finished, an exception is thrown
// else
while (ls_err.available() > 0) ret.append(conv2Html(ls_err.read()));
while (ls_in.available() > 0) ret.append(conv2Html(ls_in.read()));
end = true;
} catch (IllegalThreadStateException ex) {
// Process is running
}
// The process is not allowed to run longer than given time.
if (System.currentTimeMillis() - start > MAX_PROCESS_RUNNING_TIME) {
ls_proc.destroy();
end = true;
ret.append("!!!! Process has timed out, destroyed !!!!!");
}
try {
Thread.sleep(50);
} catch (InterruptedException ie) {
}
}
} catch (IOException e) {
ret.append("Error: " + e);
}
return ret.toString();
}
