[1/3] kernel-shark: Show warning message when running as Root
diff mbox series

Message ID 20190809080623.7548-2-y.karadz@gmail.com
State Superseded
Headers show
Series
  • Handle the case when KernelShark is started as Root
Related show

Commit Message

Yordan Karadzhov (VMware) Aug. 9, 2019, 8:06 a.m. UTC
Running the KernelShark GUI with Root privileges is not recommended due
to security reasons. The user will be allowed to continue on its own risk.

Suggested-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=204475
Signed-off-by: Yordan Karadzhov (VMware) <y.karadz@gmail.com>
---
 kernel-shark/src/KsMainWindow.cpp | 28 ++++++++++++++++++++++++++++
 kernel-shark/src/KsMainWindow.hpp |  2 ++
 2 files changed, 30 insertions(+)

Comments

Yordan Karadzhov (VMware) Aug. 9, 2019, 12:13 p.m. UTC | #1
Hey Mike,
Very well spotted, thanks!

It will be great if you can test the patches on your machine.

cheers,
Yordan

On 9.08.19 г. 13:33 ч., Mike Auty wrote:
> Hiya,
> 
> I can't really review the rest of the code, my main language is python,
> but I spotted a couple of minor typos that might be worth fixing?  I
> didn't want to post them to everyone since they're fairly trivial.  5:S
> 
> "noRootWorn" might want to "noRootWarn"
> "your one risk." might want to be "your own risk."
> 
> Thanks for putting the patches together so quickly!  5:)
> 
> Mike  5:)
> 
> On 09/08/2019 09:06, Yordan Karadzhov (VMware) wrote:
>> Running the KernelShark GUI with Root privileges is not recommended due
>> to security reasons. The user will be allowed to continue on its own risk.
>>
>> Suggested-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
>> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=204475
>> Signed-off-by: Yordan Karadzhov (VMware) <y.karadz@gmail.com>
>> ---
>>   kernel-shark/src/KsMainWindow.cpp | 28 ++++++++++++++++++++++++++++
>>   kernel-shark/src/KsMainWindow.hpp |  2 ++
>>   2 files changed, 30 insertions(+)
>>
>> diff --git a/kernel-shark/src/KsMainWindow.cpp b/kernel-shark/src/KsMainWindow.cpp
>> index 6439265..2560bf8 100644
>> --- a/kernel-shark/src/KsMainWindow.cpp
>> +++ b/kernel-shark/src/KsMainWindow.cpp
>> @@ -76,6 +76,9 @@ KsMainWindow::KsMainWindow(QWidget *parent)
>>   	_createMenus();
>>   	_initCapture();
>>   
>> +	if (geteuid() == 0)
>> +		_rootWarning();
>> +
>>   	_splitter.addWidget(&_graph);
>>   	_splitter.addWidget(&_view);
>>   	setCentralWidget(&_splitter);
>> @@ -1271,3 +1274,28 @@ void KsMainWindow::_deselectB()
>>   	_mState.updateLabels();
>>   	_graph.glPtr()->model()->update();
>>   }
>> +
>> +void KsMainWindow::_rootWarning()
>> +{
>> +	QString cbFlag("noRootWorn");
>> +
>> +	if (_settings.value(cbFlag).toBool())
>> +		return;
>> +
>> +	QMessageBox warn;
>> +	warn.setText("KernelShark will have Root privileges.");
>> +	warn.setInformativeText("Continue on your one risk.");
>> +	warn.setIcon(QMessageBox::Warning);
>> +	warn.setStandardButtons(QMessageBox::Close);
>> +
>> +	QCheckBox cb("Don't show this message again.");
>> +
>> +	auto lamCbChec = [&] (int state) {
>> +		if (state)
>> +			_settings.setValue(cbFlag, true);
>> +	};
>> +
>> +	connect(&cb, &QCheckBox::stateChanged, lamCbChec);
>> +	warn.setCheckBox(&cb);
>> +	warn.exec();
>> +}
>> diff --git a/kernel-shark/src/KsMainWindow.hpp b/kernel-shark/src/KsMainWindow.hpp
>> index 62e66a0..4a7b8ab 100644
>> --- a/kernel-shark/src/KsMainWindow.hpp
>> +++ b/kernel-shark/src/KsMainWindow.hpp
>> @@ -238,6 +238,8 @@ private:
>>   
>>   	void _deselectB();
>>   
>> +	void _rootWarning();
>> +
>>   	void _updateFilterMenu();
>>   
>>   	void _filterSyncCBoxUpdate(kshark_context *kshark_ctx);
>>
>
Steven Rostedt Aug. 9, 2019, 1:19 p.m. UTC | #2
On Fri,  9 Aug 2019 11:06:21 +0300
"Yordan Karadzhov (VMware)" <y.karadz@gmail.com> wrote:

> Running the KernelShark GUI with Root privileges is not recommended due
> to security reasons. The user will be allowed to continue on its own risk.
> 
> Suggested-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=204475
> Signed-off-by: Yordan Karadzhov (VMware) <y.karadz@gmail.com>
> ---
>  kernel-shark/src/KsMainWindow.cpp | 28 ++++++++++++++++++++++++++++
>  kernel-shark/src/KsMainWindow.hpp |  2 ++
>  2 files changed, 30 insertions(+)
> 
> diff --git a/kernel-shark/src/KsMainWindow.cpp b/kernel-shark/src/KsMainWindow.cpp
> index 6439265..2560bf8 100644
> --- a/kernel-shark/src/KsMainWindow.cpp
> +++ b/kernel-shark/src/KsMainWindow.cpp
> @@ -76,6 +76,9 @@ KsMainWindow::KsMainWindow(QWidget *parent)
>  	_createMenus();
>  	_initCapture();
>  
> +	if (geteuid() == 0)
> +		_rootWarning();
> +
>  	_splitter.addWidget(&_graph);
>  	_splitter.addWidget(&_view);
>  	setCentralWidget(&_splitter);
> @@ -1271,3 +1274,28 @@ void KsMainWindow::_deselectB()
>  	_mState.updateLabels();
>  	_graph.glPtr()->model()->update();
>  }
> +
> +void KsMainWindow::_rootWarning()
> +{
> +	QString cbFlag("noRootWorn");

Mike already pointed this out (Thanks Mike!)

> +
> +	if (_settings.value(cbFlag).toBool())
> +		return;
> +
> +	QMessageBox warn;
> +	warn.setText("KernelShark will have Root privileges.");
> +	warn.setInformativeText("Continue on your one risk.");

Probably better to say:

  "KernelShark is running with Root privileges."
  "Continue at your own risk."

-- Steve

> +	warn.setIcon(QMessageBox::Warning);
> +	warn.setStandardButtons(QMessageBox::Close);
> +
> +	QCheckBox cb("Don't show this message again.");
> +
> +	auto lamCbChec = [&] (int state) {
> +		if (state)
> +			_settings.setValue(cbFlag, true);
> +	};
> +
> +	connect(&cb, &QCheckBox::stateChanged, lamCbChec);
> +	warn.setCheckBox(&cb);
> +	warn.exec();
> +}
> diff --git a/kernel-shark/src/KsMainWindow.hpp b/kernel-shark/src/KsMainWindow.hpp
> index 62e66a0..4a7b8ab 100644
> --- a/kernel-shark/src/KsMainWindow.hpp
> +++ b/kernel-shark/src/KsMainWindow.hpp
> @@ -238,6 +238,8 @@ private:
>  
>  	void _deselectB();
>  
> +	void _rootWarning();
> +
>  	void _updateFilterMenu();
>  
>  	void _filterSyncCBoxUpdate(kshark_context *kshark_ctx);

Patch
diff mbox series

diff --git a/kernel-shark/src/KsMainWindow.cpp b/kernel-shark/src/KsMainWindow.cpp
index 6439265..2560bf8 100644
--- a/kernel-shark/src/KsMainWindow.cpp
+++ b/kernel-shark/src/KsMainWindow.cpp
@@ -76,6 +76,9 @@  KsMainWindow::KsMainWindow(QWidget *parent)
 	_createMenus();
 	_initCapture();
 
+	if (geteuid() == 0)
+		_rootWarning();
+
 	_splitter.addWidget(&_graph);
 	_splitter.addWidget(&_view);
 	setCentralWidget(&_splitter);
@@ -1271,3 +1274,28 @@  void KsMainWindow::_deselectB()
 	_mState.updateLabels();
 	_graph.glPtr()->model()->update();
 }
+
+void KsMainWindow::_rootWarning()
+{
+	QString cbFlag("noRootWorn");
+
+	if (_settings.value(cbFlag).toBool())
+		return;
+
+	QMessageBox warn;
+	warn.setText("KernelShark will have Root privileges.");
+	warn.setInformativeText("Continue on your one risk.");
+	warn.setIcon(QMessageBox::Warning);
+	warn.setStandardButtons(QMessageBox::Close);
+
+	QCheckBox cb("Don't show this message again.");
+
+	auto lamCbChec = [&] (int state) {
+		if (state)
+			_settings.setValue(cbFlag, true);
+	};
+
+	connect(&cb, &QCheckBox::stateChanged, lamCbChec);
+	warn.setCheckBox(&cb);
+	warn.exec();
+}
diff --git a/kernel-shark/src/KsMainWindow.hpp b/kernel-shark/src/KsMainWindow.hpp
index 62e66a0..4a7b8ab 100644
--- a/kernel-shark/src/KsMainWindow.hpp
+++ b/kernel-shark/src/KsMainWindow.hpp
@@ -238,6 +238,8 @@  private:
 
 	void _deselectB();
 
+	void _rootWarning();
+
 	void _updateFilterMenu();
 
 	void _filterSyncCBoxUpdate(kshark_context *kshark_ctx);