[MacPorts] #26526: ettercap-ng fails to show packet content in snow leopard

[MacPorts]

#26526: ettercap-ng fails to show packet content in snow leopard
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 Reporter:  mikel.izal@…            |       Owner:  ultrix@…        
     Type:  defect                  |      Status:  new             
 Priority:  Normal                  |   Milestone:                  
Component:  ports                   |     Version:  1.9.1           
 Keywords:                          |        Port:  ettercap-ng     
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Changes (by macsforever2000@…):

  * owner:  macports-tickets@… => ultrix@…
  * port:  => ettercap-ng


Old description:

> The patch file patch-src__protocols__ec_tcp.c in rttercap-ng 0.7.3_3 make
> it build in snow leopard but breaks packet decoding. The pointer to tcp
> header is bad calculated and the bad session content data is shown.
>
> It is easy to fix. This line in the patch
>
> +   opt_end = (u_char *)(tcp + tcp->off * 4);
>
> should be changed to something like
>
> +   opt_end = (u_char *)((u_chat *)tcp + tcp->off * 4);
>
> With this change it works right. To check it launching the program with
>
> sudo ettercap -T -z //80
>
> has to display correct session HTTP content

New description:

 The patch file patch-src__protocols__ec_tcp.c in rttercap-ng 0.7.3_3 make
 it build in snow leopard but breaks packet decoding. The pointer to tcp
 header is bad calculated and the bad session content data is shown.

 It is easy to fix. This line in the patch

 {{{
 +   opt_end = (u_char *)(tcp + tcp->off * 4);
 }}}

 should be changed to something like

 {{{
 +   opt_end = (u_char *)((u_chat *)tcp + tcp->off * 4);
 }}}

 With this change it works right. To check it launching the program with

 {{{
 sudo ettercap -T -z //80
 }}}

 has to display correct session HTTP content

--

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Ticket URL: <https://trac.macports.org/ticket/26526#comment:1>
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