Re: Is NSLog secure?
Re: Is NSLog secure?
- Subject: Re: Is NSLog secure?
- From: Sunil Vemuri <email@hidden>
- Date: Tue, 10 May 2005 12:45:30 -0400
One slight adjustment to this if I may. Since NSLog allows for a
variable-length argument list, the macro can be designed to
accommodate this as well.
#ifdef DEBUG
# define MYLog(...) NSLog(__VA_ARGS__)
#else
# define MYLog(...) /* */
#endif
Here's more for the curious:
http://gcc.gnu.org/onlinedocs/gcc-3.3.1/gcc/Variadic-Macros.html
--Sunil
On May 10, 2005, at 11:39 AM, Frank D. Engel, Jr. wrote:
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Nice, but I think I can do you one better; put this in a header
file common to all of the source files where you use NSLog:
#define DEBUG
#ifdef DEBUG
#define MYLog(x) NSLog(x)
#else
#define MYLog(x) /* */
#endif
Now in your code, replace NSLog with MYLog...
When doing your build, simply undefine DEBUG so that the NSLog
messages become comments, which compile down to nothing ;-)
On May 9, 2005, at 9:21 PM, Greg wrote:
#define DEBUG
in code somewhere
#ifdef DEBUG
NSLog(@"Some sensitive message");
#endif
Then all you have to do is either put the define in the
development build style or just comment out the #define when doing
a deployment build.
Greg
On 10/05/2005, at 10:54 AM, Ben Borofka wrote:
I'm writing a program that outputs some sensitive data via NSLog
(for debugging) that shouldn't be visible to the user. Is it OK
to leave all the places I use NSLog where they are, or should I
take them out? Is there anyways the user can grab or sniff what
my program is outputting?
I just use NSLog for debugging purposes when I'm running the
program in Xcode. It's convenient, so I can see what my program
is doing, but if there's anyway someone can get the data that is
being output with NSLog, I need to take it out.
Thanks.
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- -----------------------------------------------------------
Frank D. Engel, Jr. <email@hidden>
$ ln -s /usr/share/kjvbible /usr/manual
$ true | cat /usr/manual | grep "John 3:16"
John 3:16 For God so loved the world, that he gave his only
begotten Son, that whosoever believeth in him should not perish,
but have everlasting life.
$
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aAdSqJiv0n70167oKik9Q78=
=jonV
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