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| CodeSonar® 9.0p0 Hot Tips | CONFIDENTIAL | CodeSecure Inc |
A path manipulation function is passed an input parameter whose size exceeds the MAX_PATH upper bound specified for that parameter by the Windows API.
| Class Name | MAX_PATH Exceeded | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Significance | security | ||||||||||||
| Mnemonic | MISC.PATHLENGTH | ||||||||||||
| Categories |
|
||||||||||||
| Availability | Available for C and C++. |
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| Enabling | Checks for this warning class are enabled by
default. To disable them, add the following WARNING_FILTER rule to the
project configuration file.
WARNING_FILTER += discard class="MAX_PATH Exceeded" |
Japanese (ja)
#include <shlwapi.h>
#include <string.h>
void f()
{
char buf[1024], buf2[1024];
memset( buf, 'a', 512 );
memset( buf2, 'a', 512 );
buf[512] = 0;
buf2[512] = 0;
PathAppendA( buf, buf2 );
}
CodeSonar ships with library models that allow it to recognize functions such as Win32 PathMakeUniqueName() that take one or more arguments whose length should not exceed MAX_PATH. If one of these functions is called with a path argument longer than MAX_PATH, a warning will be issued.
If you have created a custom library model for some function f() in terms of one of these existing models, calls to f() will also be capable of triggering MAX_PATH Exceeded warnings.
The following configuration file parameters affect checks for this warning class.