Wireshark mailing list archives

Re: Wireshark crashes on tvb_get_const_stringz()


From: Kaul <mykaul () gmail com>
Date: Tue, 20 Mar 2012 15:20:53 +0200

On Tue, Mar 20, 2012 at 3:19 PM, Jakub Zawadzki
<darkjames-ws () darkjames pl>wrote:

On Tue, Mar 20, 2012 at 03:04:23PM +0200, Kaul wrote:
I might have used tvb_get_const_stringz() incorrectly, yet I don't think
Wireshark should crash:
Program received signal SIGSEGV, Segmentation fault.
tvb_get_const_stringz (tvb=0x1c01b60, offset=10, lengthp=0x9) at
tvbuff.c:2548
2548 *lengthp = size;

I'm not entirely sure why it crashes yet or why I am using it
incorrectly.

Last argument of tvb_get_const_stringz() takes pointer to integer (not
value!)
and stores length of string in it.

If you want to get next N chars (not NUL terminated), and store it as
C-string you
can use tvb_get_ephemeral_string() instead.


Yep, discovered that. My fault. Sorry for the noise.
Y.


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