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Remove pristine-tar files.

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ubuntu/cosmic
Simon Quigley 7 years ago
parent b23b3f7db3
commit 6e1893ae42
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8
AUTHORS
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Upstream Authors:
LXQt team: http://lxqt.org
Copyright:
Copyright (c) 2015-2017 LXQt team
License: LGPL-2.1+
The full text of the licenses can be found in the 'LICENSE' file.

80
CHANGELOG
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lxqt-sudo-0.12.0 / 2017-10-21
=============================
* Set informal patch version
* Added basic .gitattributes
* Drops Qt5Core_VERSION_STRING
* set Qt::AA_UseHighDpiPixmaps to true
* Bump year
0.11.1 / 2017-01-01
===================
* Release 0.11.1: Update changelog
* Make CMakeLists.txt more uniform.
0.11.0 / 2016-09-24
===================
* Release 0.11.0: Add changelog
* Add README.md
* build: Forward translations parameters
* ts-files removal (#21)
* Remove translations (will be pulled in build time)
* Bump year
* Italian translation update
* Updated Russian translation Fix language and typos
* Add Russian translation
0.10.0 / 2015-11-02
===================
* Fix LICENSE file
* Fix starting pcmanfm-qt
* Preserve environment with sudo backend
* Update Slovak translation
* Updated translation template, updated german translation.
* Add a plus to AUTHORS license AUTHORS must match the files fixes lxde/lxqt/issues/784 fix typo choosen --> chosen
* lxqt-sudo: partial support for running cmd with arguments using su backend
* lxqt-sudo: unified processing logic for su & sudo into common code
* lxqt-sudo: lxsu & lxsudo symlinks for lxqt-sudo
* lxqt-sudo: added support for su(1) backend
* Add Polish translation
* Rename LxQt to LXQt everywhere
* Remove the country specific from language code.
* Add Greek (el) translation
* Created italian translation, fixed missing line <TS version="2.1" language="XX"> for _de.ts and -sk.ts
* Traditional Chinese translation
* Handles CMake policy CMP0063
* Use the LXQtCompilerSettings CMake module
* main: removed old useless define
* Adds Runtime install COMPONENT
* Coding style change
* Use target_compile_definitions()
* Use GNUInstallDirs
* Use CMAKE_AUTOUIC, drop qt5_wrap_ui()
* Use CMAKE_AUTOMOC, drop qt5_wrap_cpp()
* Use CMAKE_INCLUDE_CURRENT_DIR
* main: use standard liblxqt unix signal handling to quit
* Updates the build system to the Targets infrastructure
* German translation
* lxqt-sudo: licensing
0.9.0 / 2015-06-10
==================
* lxqt-sudo: direct communication with sudo
* lxqt-sudo: use dialog-password icon
* lxqt-sudo: help & version info into stdout (instead of stderr)
* man: bug reporting link fixed
* lxqt-sudo: version parameter support
* lxqt-sudo: added sk translation
* lxqt-sudo: proper communication error messages to stderr
* lxqt-sudo: removed .desktop file
* lxqt-sudo: showing big "security-high" icon
* lxqt-sudo: help/usage added
* lxqt-sudo: information about sudo's failure
* lxqt-sudo: manual page
* lxqt-sudo: do not use -b for sudo (fixes some application starting problems)
* lxqt-sudo: new GUI frontend for sudo

126
CMakeLists.txt
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cmake_minimum_required(VERSION 3.0.2 FATAL_ERROR)
project(lxqt-sudo)
include(GNUInstallDirs)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTOUIC ON)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
option(UPDATE_TRANSLATIONS "Update source translation translations/*.ts files" OFF)
option(PULL_TRANSLATIONS "Pull translations" ON)
find_package(Qt5Widgets REQUIRED)
message(STATUS "Building with Qt${Qt5Core_VERSION}")
find_package(lxqt REQUIRED)
# Patch version 0
include(LXQtCompilerSettings NO_POLICY_SCOPE)
set ( LINK_LXSU "lxsu")
set ( LINK_LXSUDO "lxsudo")
set ( HDRS
passworddialog.h
)
set ( SRCS
passworddialog.cpp
sudo.cpp
main.cpp
)
set ( MOCS
passworddialog.h
)
set( UIS
passworddialog.ui
)
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE Release)
endif()
# Translations **********************************
include(LXQtTranslate)
lxqt_translate_ts(QM_FILES
UPDATE_TRANSLATIONS
${UPDATE_TRANSLATIONS}
SOURCES
${HDRS}
${SRCS}
${UIS}
INSTALL_DIR
"${LXQT_TRANSLATIONS_DIR}/${PROJECT_NAME}"
PULL_TRANSLATIONS
${PULL_TRANSLATIONS}
CLEAN_TRANSLATIONS
${CLEAN_TRANSLATIONS}
TRANSLATIONS_REPO
${TRANSLATIONS_REPO}
TRANSLATIONS_REFSPEC
${TRANSLATIONS_REFSPEC}
)
lxqt_app_translation_loader(SRCS ${PROJECT_NAME})
#************************************************
add_executable(lxqt-sudo
${SRCS}
${DESKTOP_FILES}
${QM_FILES}
)
target_link_libraries(lxqt-sudo
Qt5::Widgets
util
lxqt
)
target_compile_definitions(lxqt-sudo
PRIVATE "LXQTSUDO_SUDO=\"sudo\""
PRIVATE "LXQTSUDO_SU=\"su\""
PRIVATE "LXQTSUDO=\"lxqt-sudo\""
PRIVATE "LXQTSUDO_LXSU=\"${LINK_LXSU}\""
PRIVATE "LXQTSUDO_LXSUDO=\"${LINK_LXSUDO}\""
PRIVATE "LXQT_VERSION=\"${LXQT_VERSION}\""
)
add_custom_command(TARGET lxqt-sudo POST_BUILD
COMMAND ln -f -s lxqt-sudo "${LINK_LXSU}"
WORKING_DIRECTORY .
COMMENT "Creating ${LINK_LXSU} symlink"
)
add_custom_command(TARGET lxqt-sudo POST_BUILD
COMMAND ln -f -s lxqt-sudo "${LINK_LXSUDO}"
WORKING_DIRECTORY .
COMMENT "Creating ${LINK_LXSUDO} symlink"
)
install(TARGETS
lxqt-sudo
RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
COMPONENT Runtime
)
install(FILES
"${CMAKE_CURRENT_BINARY_DIR}/${LINK_LXSU}" "${CMAKE_CURRENT_BINARY_DIR}/${LINK_LXSUDO}"
DESTINATION "${CMAKE_INSTALL_BINDIR}"
COMPONENT Runtime
)
install(FILES
${DESKTOP_FILES}
DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/applications"
COMPONENT Runtime
)
install(FILES
man/lxqt-sudo.1 "man/${LINK_LXSU}.1" "man/${LINK_LXSUDO}.1"
DESTINATION "${CMAKE_INSTALL_MANDIR}/man1"
COMPONENT Runtime
)

458
LICENSE
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33
README.md
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# lxqt-sudo
## Overview
lxqt-sudo is a graphical front-end of commands `sudo` and `su` respectively. As such it enables regular users to launch applications with permissions of other users including root.
## Installation
### Compiling source code
Runtime dependencies are qtbase, sudo (su should be installed by default on all *ix operating systems) and [liblxqt](https://github.com/lxde/liblxqt).
Installing at least one icon theme according to the [XDG Icon Theme Specification](https://www.freedesktop.org/wiki/Specifications/icon-theme-spec/) like e. g. "Oxygen Icons" is recommended to have the GUI display icons.
Additional build dependencies are CMake and optionally Git to pull latest VCS checkouts. The localization files were outsourced to repository [lxqt-l10n](https://github.com/lxde/lxqt-l10n) so the corresponding dependencies are needed, too. Please refer to this repository's `README.md` for further information.
Code configuration is handled by CMake. CMake variable `CMAKE_INSTALL_PREFIX` has to be set to `/usr` on most operating systems.
To build run `make`, to install `make install` which accepts variable `DESTDIR` as usual.
### Binary packages
Official binary packages are provided by all major Linux distributions like Arch Linux, Debian (as of Debian stretch), Fedora and openSUSE. Just use your package manager to search for string `lxqt-sudo`.
## Configuration
lxqt-sudo itself does not require any configuration.
In order to use it as front-end of `sudo` the corresponding permissions have to be set, though. Most of the time this is handled by binary `visudo` or editing configuration file `/etc/sudoers` manually which both is beyond this document's scope.
## Usage
lxqt-sudo comes with a man page explaining the syntax very well so running `man 1 lxqt-sudo` should get you started.
By default `sudo` is used as backend, the choice can be enforced by command line options `--su[do]` or by using symbolic links `lxsu` and `lxsudo` which belong to regular installations of lxqt-sudo.

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/* BEGIN_COMMON_COPYRIGHT_HEADER
* (c)LGPL2+
*
* LXQt - a lightweight, Qt based, desktop toolset
* http://lxqt.org
*
* Copyright: 2015 LXQt team
* Authors:
* Palo Kisa <palo.kisa@gmail.com>
*
* This program or library is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* END_COMMON_COPYRIGHT_HEADER */
#include <LXQt/Application>
#include "sudo.h"
int main(int argc, char **argv)
{
LXQt::Application app(argc, argv, true);
app.setQuitOnLastWindowClosed(false);
app.setAttribute(Qt::AA_UseHighDpiPixmaps, true);
Sudo s;
return s.main();
}

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.TH lxqt-sudo 1 "" "" "LXQt\ Module"
.SH NAME
\fBlxqt-sudo\fR, \fBlxsu\fR \- execute a command as privileged user
.SH SYNOPSIS
\fBlxqt-sudo\fR \fIoption\fR [\fIcommand\fR [\fIarguments\fR]]
.br
\fBlxsu\fR [\fIoption\fR] [\fIcommand\fR [\fIarguments\fR]]
.br
\fBlxsudo\fR [\fIoption\fR] [\fIcommand\fR [\fIarguments\fR]]
.SH DESCRIPTION
\fBlxqt-sudo\fR (and symlinks \fBlxsu\fR, \fBlxsudo\fR) is a graphical QT frontend for plain \fBsudo(8)\fR or \fBsu(1)\fR (for requesting optional password in GUI fashion).
.br
When invoked it simply spawns child \fIsudo\fR or \fIsu\fR process with requested \fIcommand\fR (and optional \fIarguments\fR). If \fIsudo\fR/\fIsu\fR requests user's password,
the GUI password dialog is shown and (after submit) the password is provided to backend.
.br
.SH OPTIONS
\fBoption\fR is one of:
.br
-h|--help Print help.
.br
-v|--version Print version information.
.br
-s|--su Use \fIsu\fR as backend (default for \fBlxqt-sudo\fR & \fBlxsudo\fR is \fIsudo\fR, for \fBlxsu\fR is \fIsu\fR).
.br
-d|--sudo Use \fIsudo\fR as backend (default for \fBlxqt-sudo\fR & \fBlxsudo\fR is \fIsudo\fR, for \fBlxsu\fR is \fIsu\fR).
.SH "REPORTING BUGS"
Report bugs to https://github.com/lxde/lxqt/issues
.SH "SEE ALSO"
\fBsudo(8)\fR \fBsu(1)\fR
.SH AUTHOR
This manual page was created by \fBPalo Kisa\fR \fI<palo.kisa@gmail.com>\fR
for \fBLXQt\fR project.

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/* BEGIN_COMMON_COPYRIGHT_HEADER
* (c)LGPL2+
*
* LXQt - a lightweight, Qt based, desktop toolset
* http://lxqt.org
*
* Copyright: 2015 LXQt team
* Authors:
* Palo Kisa <palo.kisa@gmail.com>
*
* This program or library is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* END_COMMON_COPYRIGHT_HEADER */
#include "passworddialog.h"
#include "ui_passworddialog.h"
PasswordDialog::PasswordDialog(QStringList argv
, QWidget * parent/* = 0*/
, Qt::WindowFlags f/* = 0*/)
: QDialog(parent, f)
, ui(new Ui::PasswordDialog)
{
ui->setupUi(this);
ui->commandL->setText(argv.join(QStringLiteral(" ")));
QString cmd;
if (0 < argv.size())
cmd = argv[0];
ui->descriptionL->setText(tr("<b>%1</b> needs administrative privileges.\nPlease enter your password.").arg(cmd));
ui->iconL->setPixmap(QIcon::fromTheme("dialog-password").pixmap(64, 64));
setWindowIcon(QIcon::fromTheme("security-high"));
}
PasswordDialog::~PasswordDialog()
{
}
void PasswordDialog::showEvent(QShowEvent * event)
{
ui->errorL->setText(tr("Attempt #%1").arg(++mAttempt));
return QDialog::showEvent(event);
}
QString PasswordDialog::password() const
{
return ui->passwordLE->text();
}

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passworddialog.h
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/* BEGIN_COMMON_COPYRIGHT_HEADER
* (c)LGPL2+
*
* LXQt - a lightweight, Qt based, desktop toolset
* http://lxqt.org
*
* Copyright: 2015 LXQt team
* Authors:
* Palo Kisa <palo.kisa@gmail.com>
*
* This program or library is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* END_COMMON_COPYRIGHT_HEADER */
#ifndef PASSWORDDIALOG_H
#define PASSWORDDIALOG_H
#include <QDialog>
namespace Ui {
class PasswordDialog;
}
class PasswordDialog : public QDialog
{
Q_OBJECT
public:
PasswordDialog(QStringList argv
, QWidget * parent = 0
, Qt::WindowFlags f = 0);
~PasswordDialog();
virtual void showEvent(QShowEvent * event) override;
QString password() const;
private:
QScopedPointer<Ui::PasswordDialog> ui;
int mAttempt = 0;
};
#endif // PASSWORDDIALOG_H

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<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>PasswordDialog</class>
<widget class="QDialog" name="PasswordDialog">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>400</width>
<height>200</height>
</rect>
</property>
<property name="sizePolicy">
<sizepolicy hsizetype="Fixed" vsizetype="Fixed">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="windowTitle">
<string>LXQt sudo</string>
</property>
<layout class="QVBoxLayout" name="verticalLayout">
<item>
<layout class="QGridLayout" name="gridLayout">
<item row="0" column="0" rowspan="2" alignment="Qt::AlignHCenter|Qt::AlignVCenter">
<widget class="QLabel" name="iconL">
<property name="text">
<string/>
</property>
</widget>
</item>
<item row="0" column="1" alignment="Qt::AlignVCenter">
<widget class="QLabel" name="descriptionL">
<property name="text">
<string/>
</property>
<property name="wordWrap">
<bool>true</bool>
</property>
</widget>
</item>
<item row="1" column="1">
<widget class="QLabel" name="errorL">
<property name="sizePolicy">
<sizepolicy hsizetype="Preferred" vsizetype="Fixed">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string/>
</property>
</widget>
</item>
<item row="2" column="1">
<widget class="QLabel" name="commandL">
<property name="sizePolicy">
<sizepolicy hsizetype="Preferred" vsizetype="Fixed">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string/>
</property>
</widget>
</item>
<item row="2" column="0">
<widget class="QLabel" name="descCommandL">
<property name="sizePolicy">
<sizepolicy hsizetype="Preferred" vsizetype="Fixed">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>Command:</string>
</property>
</widget>
</item>
<item row="4" column="0">
<widget class="QLabel" name="descPasswordL">
<property name="text">
<string>Password:</string>
</property>
</widget>
</item>
<item row="4" column="1">
<widget class="QLineEdit" name="passwordLE">
<property name="echoMode">
<enum>QLineEdit::Password</enum>
</property>
</widget>
</item>
</layout>
</item>
<item>
<widget class="Line" name="line">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
</widget>
</item>
<item>
<widget class="QDialogButtonBox" name="buttonBox">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="standardButtons">
<set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
</property>
</widget>
</item>
</layout>
</widget>
<resources/>
<connections>
<connection>
<sender>buttonBox</sender>
<signal>accepted()</signal>
<receiver>PasswordDialog</receiver>
<slot>accept()</slot>
<hints>
<hint type="sourcelabel">
<x>248</x>
<y>254</y>
</hint>
<hint type="destinationlabel">
<x>157</x>
<y>274</y>
</hint>
</hints>
</connection>
<connection>
<sender>buttonBox</sender>
<signal>rejected()</signal>
<receiver>PasswordDialog</receiver>
<slot>reject()</slot>
<hints>
<hint type="sourcelabel">
<x>316</x>
<y>260</y>
</hint>
<hint type="destinationlabel">
<x>286</x>
<y>274</y>
</hint>
</hints>
</connection>
</connections>
</ui>

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/* BEGIN_COMMON_COPYRIGHT_HEADER
* (c)LGPL2+
*
* LXQt - a lightweight, Qt based, desktop toolset
* http://lxqt.org
*
* Copyright: 2015 LXQt team
* Authors:
* Palo Kisa <palo.kisa@gmail.com>
*
* This program or library is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* END_COMMON_COPYRIGHT_HEADER */
#include "sudo.h"
#include "passworddialog.h"
#include <LXQt/Application>
#include <QTextStream>
#include <QMessageBox>
#include <QFileInfo>
#include <QSocketNotifier>
#include <QDebug>
#include <QThread>
#include <pty.h>
#include <unistd.h>
#include <memory>
#include <csignal>
#include <sys/wait.h>
#include <fcntl.h>
namespace
{
const QString app_master{QStringLiteral(LXQTSUDO)};
const QString app_version{QStringLiteral(LXQT_VERSION)};
const QString app_lxsu{QStringLiteral(LXQTSUDO_LXSU)};
const QString app_lxsudo{QStringLiteral(LXQTSUDO_LXSUDO)};
const QString su_prog{QStringLiteral(LXQTSUDO_SU)};
const QString sudo_prog{QStringLiteral(LXQTSUDO_SUDO)};
const QString pwd_prompt_end{QStringLiteral(": ")};
const QChar nl{QLatin1Char('\n')};
void usage(QString const & err = QString())
{
if (!err.isEmpty())
QTextStream(stderr) << err << '\n';
QTextStream(stdout)
<< QObject::tr("Usage: %1 option [command [arguments...]]\n\n"
"GUI frontend for %2/%3\n\n"
"Arguments:\n"
" option:\n"
" -h|--help Print this help.\n"
" -v|--version Print version information.\n"
" -s|--su Use %3(1) as backend.\n"
" -d|--sudo Use %2(8) as backend.\n"
" command Command to run.\n"
" arguments Optional arguments for command.\n\n").arg(app_master).arg(sudo_prog).arg(su_prog);
if (!err.isEmpty())
QMessageBox(QMessageBox::Critical, app_master, err, QMessageBox::Ok).exec();
}
void version()
{
QTextStream(stdout)
<< QObject::tr("%1 version %2\n").arg(app_master).arg(app_version);
}
inline void env_workarounds()
{
//cleanup environment
//pcmanfm-qt will not start if the DBUS_SESSION_BUS_ADDRESS is preserved
unsetenv("DBUS_SESSION_BUS_ADDRESS");
}
}
Sudo::Sudo()
: mArgs{lxqtApp->arguments()}
, mBackend{BACK_NONE}
{
QString cmd = QFileInfo(mArgs[0]).fileName();
mArgs.removeAt(0);
if (app_lxsu == cmd)
mBackend = BACK_SU;
else if (app_lxsudo == cmd || app_master == cmd)
mBackend = BACK_SUDO;
}
Sudo::~Sudo()
{
}
int Sudo::main()
{
if (0 < mArgs.size())
{
//simple option check
QString const & arg1 = mArgs[0];
if ("-h" == arg1 || "--help" == arg1)
{
usage();
return 0;
} else if ("-v" == arg1 || "--version" == arg1)
{
version();
return 0;
} else if ("-s" == arg1 || "--su" == arg1)
{
mBackend = BACK_SU;
mArgs.removeAt(0);
} else if ("-d" == arg1 || "--sudo" == arg1)
{
mBackend = BACK_SUDO;
mArgs.removeAt(0);
}
}
//any other arguments we simply forward to su/sudo
if (1 > mArgs.size())
{
usage(tr("%1: no command to run provided!").arg(app_master));
return 1;
}
if (BACK_NONE == mBackend)
{
//we were invoked through unknown link (or renamed binary)
usage(tr("%1: no backend chosen!").arg(app_master));
return 1;
} else if (BACK_SU == mBackend && 1 < mArgs.size())
{
QString cmd = mArgs.replaceInStrings(QRegExp(QStringLiteral("^(.*)$")), "'\\1'").join(QStringLiteral(" "));
QTextStream(stderr) << tr("%1: warning - got multiple arguments for %2 backend, squashing into one: %3")
.arg(app_master).arg(su_prog).arg(cmd);
mArgs.erase(++mArgs.begin(), mArgs.end());
mArgs[0] = std::move(cmd);
}
mDlg.reset(new PasswordDialog{mArgs});
mDlg->setModal(true);
lxqtApp->setActiveWindow(mDlg.data());
mChildPid = forkpty(&mPwdFd, nullptr, nullptr, nullptr);
if (0 == mChildPid)
child(); //never returns
else if (-1 == mChildPid)
QMessageBox(QMessageBox::Critical, mDlg->windowTitle()
, tr("Failed to fork: %1").arg(strerror(errno)), QMessageBox::Ok).exec();
else
return parent();
return 1;
}
void Sudo::child()
{
int params_cnt = 2 //1. su/sudo & last nullptr
+ 1 //-c for su | -E for sudo
+ mArgs.size();
std::unique_ptr<char const *[]> params{new char const *[params_cnt]};
const char ** param_arg = params.get() + 1;
std::string program;
if (BACK_SU == mBackend)
{
program = su_prog.toStdString();
*(param_arg++) = "-c"; //run command
} else
{
program = sudo_prog.toStdString();
*(param_arg++) = "-E"; //preserve environment
}
params[0] = program.c_str();
std::vector<std::string> arguments;
for (const auto & a : mArgs)
arguments.push_back(a.toStdString());
for (const auto & a : arguments)
*(param_arg++) = a.c_str();
*param_arg = nullptr;
env_workarounds();
setsid(); //session leader
execvp(params[0], const_cast<char **>(params.get()));
//exec never returns in case of success
QTextStream{stderr, QIODevice::WriteOnly} << tr("%1: Failed to exec '%2': %3\n").arg(app_master).arg(params[0]).arg(strerror(errno));
exit(1);
}
void Sudo::stopChild()
{
close(mPwdFd);
kill(mChildPid, SIGINT);
int res, status;
for (int cnt = 10; 0 == (res = waitpid(mChildPid, &status, WNOHANG)) && 0 < cnt; --cnt)
QThread::msleep(100);
if (0 == res)
{
kill(mChildPid, SIGKILL);
mRet = 1;
} else
{
mRet = WIFEXITED(status) ? WEXITSTATUS(status) : 1;
}
mChildPid = -1;
}
int Sudo::parent()
{
//set the FD as non-blocking
if (0 != fcntl(mPwdFd, F_SETFL, O_NONBLOCK))
{
QMessageBox(QMessageBox::Critical, mDlg->windowTitle()
, tr("Failed to set non-block: %1").arg(strerror(errno)), QMessageBox::Ok).exec();
return 1;
}
FILE * pwd_f = fdopen(mPwdFd, "r+");
if (nullptr == pwd_f)
{
QMessageBox(QMessageBox::Critical, mDlg->windowTitle()
, tr("Failed to fdopen: %1").arg(strerror(errno)), QMessageBox::Ok).exec();
return 1;
}
QTextStream child_str{pwd_f};
QObject::connect(mDlg.data(), &QDialog::finished, [&] (int result)
{
if (QDialog::Accepted == result)
{
child_str << mDlg->password().append(nl);
child_str.flush();
} else
{
stopChild();
lxqtApp->quit();
}
});
QString last_line;
QScopedPointer<QSocketNotifier> pwd_watcher{new QSocketNotifier{mPwdFd, QSocketNotifier::Read}};
QObject::connect(pwd_watcher.data(), &QSocketNotifier::activated, [&]
{
QString line = child_str.readAll();
if (line.isEmpty())
{
pwd_watcher.reset(nullptr);
QString const & prog = BACK_SU == mBackend ? su_prog : sudo_prog;
if (last_line.startsWith(QStringLiteral("%1:").arg(prog)))
{
pwd_watcher.reset(nullptr); //stop the notifications events
stopChild();
QMessageBox(QMessageBox::Critical, mDlg->windowTitle()
, tr("Child '%1' process failed!\n%2").arg(prog).arg(last_line), QMessageBox::Ok).exec();
}
lxqtApp->quit();
} else
{
if (line.endsWith(pwd_prompt_end))
{
//if now echo is turned off, su/sudo requests password
struct termios tios;
//loop to be sure we don't miss the flag (we can afford such small delay in "normal" output processing)
for (size_t cnt = 10; 0 < cnt && 0 == tcgetattr(mPwdFd, &tios) && (ECHO & tios.c_lflag); --cnt)
QThread::msleep(10);
if (!(ECHO & tios.c_lflag))
{
mDlg->show();
return;
}
}
QTextStream{stderr, QIODevice::WriteOnly} << line;
//assuming text oriented output
QStringList lines = line.split(nl, QString::SkipEmptyParts);
last_line = lines.isEmpty() ? QString() : lines.back();
}
});
lxqtApp->exec();
if (0 < mChildPid)
{
int res, status;
res = waitpid(mChildPid, &status, 0);
mRet = (mChildPid == res && WIFEXITED(status)) ? WEXITSTATUS(status) : 1;
}
return mRet;
}

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/* BEGIN_COMMON_COPYRIGHT_HEADER
* (c)LGPL2+
*
* LXQt - a lightweight, Qt based, desktop toolset
* http://lxqt.org
*
* Copyright: 2015 LXQt team
* Authors:
* Palo Kisa <palo.kisa@gmail.com>
*
* This program or library is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* END_COMMON_COPYRIGHT_HEADER */
#ifndef SUDO_H
#define SUDO_H
#include <QObject>
#include <QScopedPointer>
#include <QStringList>
class PasswordDialog;
class Sudo : public QObject
{
Q_OBJECT
public:
enum backend_t
{
BACK_NONE
, BACK_SUDO
, BACK_SU
};
public:
Sudo();
~Sudo();
int main();
private:
//parent methods
int parent();
void stopChild();
//child methods
void child();
private:
QScopedPointer<PasswordDialog> mDlg;
QStringList mArgs;
backend_t mBackend;
int mChildPid;
int mPwdFd;
int mRet;
};
#endif //SUDO_H
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