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runtask.cpp
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runtask.cpp
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/*
* Copyright 2017 Sinodun Internet Technologies Ltd.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*/
#include "runtask.h"
#include "msgdefs.h"
#include <assert.h>
#include <Security/AuthorizationDB.h>
#include <QDebug>
#include <QRegularExpression>
RunTask::RunTask(const QString command, QObject *parent) :
QProcess(parent),
m_command(command)
{
setProgram(m_command);
}
RunTask::~RunTask()
{
//SMDebug(eDestructors,"");
if (state() == Running) {
terminate();
waitForFinished();
SMDebug(eRunTask,"waited for finish");
}
}
void RunTask::start()
{
QProcess::start(m_command, ReadWrite);
}
static const char STUBBY_UI_HELPER[] = "/usr/local/sbin/stubby-ui-helper";
const char *RunHelperTask::RIGHT_DAEMON_RUN = "net.getdnsapi.stubby.daemon.run";
const char *RunHelperTask::RIGHT_DNS_LOCAL = "net.getdnsapi.stubby.dns.local";
RunHelperTask::RunHelperTask(const QString command, QString need_right, const QString config, QObject *parent, StubbyManager *manager) :
QProcess(parent),
m_command(command),
m_need_right(need_right),
m_config(config),
m_manager(manager)
{
setProgram(STUBBY_UI_HELPER);
OSStatus oss = AuthorizationCreate(NULL, NULL, 0, &m_auth_ref);
assert(oss == errAuthorizationSuccess);
qDebug() << __FILE__ << ":" << __FUNCTION__ << "Auth create " << (oss == errAuthorizationSuccess);
// Ensure rights have been created.
oss = AuthorizationRightGet(RIGHT_DAEMON_RUN, NULL);
assert(oss == errAuthorizationSuccess);
qDebug() << __FILE__ << ":" << __FUNCTION__ << "Auth daemon " << (oss == errAuthorizationSuccess);
oss = AuthorizationRightGet(RIGHT_DNS_LOCAL, NULL);
assert(oss == errAuthorizationSuccess);
qDebug() << __FILE__ << ":" << __FUNCTION__ << "Auth dns " << (oss == errAuthorizationSuccess);
}
RunHelperTask::~RunHelperTask()
{
AuthorizationFree(m_auth_ref, kAuthorizationFlagDefaults);
qDebug() << __FILE__ << ":" << __FUNCTION__;
if (state() == Running) {
terminate();
waitForFinished();
qDebug() << __FILE__ << ":" << __FUNCTION__ << "waited for finish";
}
}
int RunHelperTask::execute()
{
QString cmd = makeCommandLine();
if (cmd.isNull()) {
qDebug() << __FILE__ << ":" << __FUNCTION__ << "auth failed";
return 1;
}
else {
//qDebug() << __FILE__ << ":" << __FUNCTION__ << "executing " << cmd;
QProcess::start(cmd);
if (!waitForStarted()) {
qDebug() << __FILE__ << ":" << __FUNCTION__ << "Command could not be executed, process not found " << cmd;
return -2;
}
QString ext_auth = makeExternalAuth();
if (!ext_auth.isEmpty())
write(ext_auth.toUtf8());
closeWriteChannel();
if (!waitForFinished())
qDebug() << __FILE__ << ":" << __FUNCTION__ << "Waiting for finish failed " << cmd;
return exitStatus() == NormalExit ? exitCode() : -1;
}
}
void RunHelperTask::start()
{
QString cmd = makeCommandLine();
if (cmd.isNull())
qDebug() << __FILE__ << ":" << __FUNCTION__ << "auth failed";
else {
//qDebug() << __FILE__ << ":" << __FUNCTION__ << "starting " << cmd;
QProcess::start(cmd);
QString ext_auth = makeExternalAuth();
if (!ext_auth.isEmpty())
write(ext_auth.toUtf8());
closeWriteChannel();
}
}
QString RunHelperTask::makeCommandLine()
{
QString cmd(STUBBY_UI_HELPER);
if ( !m_need_right.isEmpty() ) {
AuthorizationItem right_detail[] = {
{ NULL, 0, NULL, 0 },
};
AuthorizationRights the_right = { 1, &right_detail[0] };
OSStatus oss;
QByteArray needed_right = m_need_right.toUtf8();
right_detail[0].name = needed_right.constData();
oss = AuthorizationCopyRights(
m_auth_ref,
&the_right,
kAuthorizationEmptyEnvironment,
kAuthorizationFlagExtendRights | kAuthorizationFlagInteractionAllowed | kAuthorizationFlagPreAuthorize,
NULL);
if (oss != errAuthorizationSuccess)
return NULL;
cmd += " -auth - ";
}
if ( !m_config.isEmpty() ) {
cmd += " -config ";
cmd += m_config;
}
cmd += " " + m_command;
return cmd;
}
QString RunHelperTask::makeExternalAuth()
{
QString res;
AuthorizationExternalForm auth_ext_form;
OSStatus oss = AuthorizationMakeExternalForm(m_auth_ref, &auth_ext_form);
if ( oss == errAuthorizationSuccess)
for (size_t i = 0; i < kAuthorizationExternalFormLength; ++i) {
// Turn into a printable string of hex digits.
char b = auth_ext_form.bytes[i];
char c;
c = (b >> 4) & 0xf;
res.append(c >= 10 ? 'a' + c - 10 : '0' + c);
c = b & 0xf;
res.append(c >= 10 ? 'a' + c - 10 : '0' + c);
}
return res;
}