/*
* Destroys the prompt with that response
*/
QByteArray PamData::getResponse(const struct pam_message* msg) {
QByteArray response = findPrompt(msg).response;
m_currentRequest.prompts.removeOne(findPrompt(msg));
if (m_currentRequest.prompts.length() == 0)
m_sent = false;
return response;
}
/*
* Expects an empty prompt list if the previous request has been processed
*/
bool PamData::insertPrompt(const struct pam_message* msg, bool predict) {
Prompt &p = findPrompt(msg);
// first, check if we already have stored this propmpt
if (p.valid()) {
// we have a response already - do nothing
if (m_sent)
return false;
// we don't have a response yet - replace the message and prepare to send it
p.message = QString::fromLocal8Bit(msg->msg);
return true;
}
// this prompt is not stored but we have some prompts
else if (m_currentRequest.prompts.length() != 0) {
// check if we have already sent this - if we did, get rid of the answers
if (m_sent) {
m_currentRequest.clear();
m_sent = false;
}
}
// we'll predict what will come next
if (predict) {
AuthPrompt::Type type = detectPrompt(msg);
switch (type) {
case AuthPrompt::LOGIN_USER:
m_currentRequest = Request(loginRequest);
return true;
case AuthPrompt::CHANGE_CURRENT:
m_currentRequest = Request(changePassRequest);
return true;
case AuthPrompt::CHANGE_NEW:
m_currentRequest = Request(changePassNoOldRequest);
return true;
default:
break;
}
}
// or just add whatever comes exactly as it comes
m_currentRequest.prompts.append(Prompt(detectPrompt(msg), QString::fromLocal8Bit(msg->msg), msg->msg_style == PAM_PROMPT_ECHO_OFF));
return true;
}
void DebuggerDriver::processOutput(const QByteArray& data)
{
// write to log file (do not log delayed output - it would appear twice)
if (m_logFile.isOpen()) {
m_logFile.write(data);
m_logFile.flush();
}
/*
* gdb sometimes produces stray output while it's idle. This happens if
* it receives a signal, most prominently a SIGCONT after a SIGTSTP:
* The user haltet kdbg with Ctrl-Z, then continues it with "fg", which
* also continues gdb, which repeats the prompt!
*/
if (m_activeCmd == 0 && m_state != DSinterrupted) {
// ignore the output
TRACE("ignoring stray output: " + QString(data));
return;
}
ASSERT(m_state == DSrunning || m_state == DSrunningLow || m_state == DSinterrupted);
ASSERT(m_activeCmd != 0 || m_state == DSinterrupted);
// collect output until next prompt string is found
// accumulate it
m_output += data;
// check for a prompt
int promptStart = findPrompt(m_output);
if (promptStart >= 0)
{
// found prompt!
// terminate output before the prompt
m_output.resize(promptStart);
/*
* We've got output for the active command. But if it was
* interrupted, ignore it.
*/
if (m_state != DSinterrupted) {
/*
* m_state shouldn't be DSidle while we are parsing the output
* so that all commands produced by parse() go into the queue
* instead of being written to gdb immediately.
*/
ASSERT(m_state != DSidle);
CmdQueueItem* cmd = m_activeCmd;
m_activeCmd = 0;
commandFinished(cmd);
delete cmd;
}
// empty buffer
m_output.clear();
// also clear delayed output if interrupted
if (m_state == DSinterrupted) {
m_delayedOutput = std::queue<QByteArray>();
}
/*
* We parsed some output successfully. Unless there's more delayed
* output, the debugger must be idle now, so send down the next
* command.
*/
if (m_delayedOutput.empty()) {
if (m_hipriCmdQueue.empty() && m_lopriCmdQueue.empty()) {
// no pending commands
m_state = DSidle;
emit enterIdleState();
} else {
writeCommand();
}
}
}
}