Irrwahn:
> On Tue, 25 Aug 2015 19:24:17 +0200 (CEST), Karl wrote:
> > Tilt!:
> >> i wonder if we ever get to see such SSIDs from iwlist anyway -
> >> how is it supposed to print SSIDs that contain the zerobyte ...
> >
> > iwlib.c line 989..995:
> > /* Is it a non-ASCII character ??? */
> > if(isescape || !isascii(*s) || iscntrl(*s))
> > {
> > /* Escape */
> > sprintf(d, "\\x%02X", *s);
> > d += 4;
> > }
>
> Thank you. One problem, though:
> Not a single version of the Wireless Tools for Linux sources I
> happened to stumble upon doing a quick internet search contains
> this snippet, or anything remotely like it. Care to share with us,
> where this originates?
$ apt-get source wireless-tools
$ cd wireless-tools-30~pre9
$ ls iw*.[ch]
iwconfig.c iwevent.c iwgetid.c iwlib.c iwlib.h iwlib-private.h iwlist.c
iwmulticall.c iwpriv.c iwspy.c
$ grep download debian/copyright
It was downloaded from:
http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Tools.html
$
http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Tools.html
under "Wireless Tools latest versions":
///
The main features of the latest beta is support for non-ASCII ESSIDs (such as
localised ESSID), support for displaying Scanning Capabilities, slightly bigger
scan buffer, fixing minor bug iwconfig parser and minor enhancement to ifrename
:
Wireless Tools version 30-pre9 (beta)
///
> Or give a little more context, particularly
> how isescape is set?
iwlib.c line 971..981:
/* Escape the escape to avoid ambiguity.
* We do a fast path test for performance reason. Compiler will
* optimise all that ;-) */
if(*s == '\\')
{
/* Check if we would confuse it with an escape sequence */
if((e-s) > 4 && (s[1] == 'x')
&& (isxdigit(s[2])) && (isxdigit(s[3])))
{
isescape = 1;
}
Regards,
/Karl Hammar
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