Re: [dpdk-dev] [PATCH] usertools: replace unsafe input function

["Burakov, Anatoly" <anatoly.burakov@intel.com>]

On 03-Apr-19 3:29 PM, Burakov, Anatoly wrote:
> On 03-Apr-19 2:30 PM, Bruce Richardson wrote:
>> On Wed, Apr 03, 2019 at 11:44:40AM +0100, Burakov, Anatoly wrote:
>>> On 20-Mar-19 4:43 PM, Andrius Sirvys wrote:
>>>> LGTM static code analysis tool reports that the function 'input' is
>>>> unsafe. Changed to use raw_input which then converts it using
>>>> ast.literal_eval() which is safe.
>>>>
>>>> Fixes: d1b94da4a4e0 ("usertools: add client script for telemetry")
>>>> Cc: ciara.power@intel.com
>>>>
>>>> Signed-off-by: Andrius Sirvys <andrius.sirvys@intel.com>
>>>> ---
>>>>    usertools/dpdk-telemetry-client.py | 4 ++--
>>>>    1 file changed, 2 insertions(+), 2 deletions(-)
>>>>
>>>> diff --git a/usertools/dpdk-telemetry-client.py 
>>>> b/usertools/dpdk-telemetry-client.py
>>>> index ce0c7a9..c3ba77d 100755
>>>> --- a/usertools/dpdk-telemetry-client.py
>>>> +++ b/usertools/dpdk-telemetry-client.py
>>>> @@ -72,7 +72,7 @@ def requestMetrics(self): # Requests metrics for 
>>>> given client
>>>>        def repeatedlyRequestMetrics(self, sleep_time): # Recursively 
>>>> requests metrics for given client
>>>>            print("\nPlease enter the number of times you'd like to 
>>>> continuously request Metrics:")
>>>> -        n_requests = int(input("\n:"))
>>>> +        n_requests = int(ast.literal_eval(raw_input("\n:")))
>>>>            print("\033[F") #Removes the user input from screen, 
>>>> cleans it up
>>>>            print("\033[K")
>>>>            for i in range(n_requests):
>>>> @@ -87,7 +87,7 @@ def interactiveMenu(self, sleep_time): # Creates 
>>>> Interactive menu within the scr
>>>>                print("[3] Unregister client")
>>>>                try:
>>>> -                self.choice = int(input("\n:"))
>>>> +                self.choice = int(ast.literal_eval(raw_input("\n:")))
>>>>                    print("\033[F") #Removes the user input for 
>>>> screen, cleans it up
>>>>                    print("\033[K")
>>>>                    if self.choice == 1:
>>>>
>>>
>>> raw_input doesn't exist in Python 3.
>>>
>>> Perhaps you should do this at the top of the script:
>>>
>>> try:
>>>      raw_input  # Python 2
>>> except NameError:
>>>      raw_input = input  # Python 3
>>>
>>> That way, all calls to raw_input will call the intended function.
>>>
>>
>> The suggested way in the python docs is a little different:
>>
>> https://python-future.org/compatible_idioms.html#raw_input()
>>
> 
> Or that :)
> 

Actually, this requires a dependency. "future" appears to be 
preinstalled on most distributions, but "builtins" isn't. In fact, i 
can't even find it in pip.

-- 
Thanks,
Anatoly