ssid with double space not stored correctly
Dale R. Worley
worley at alum.mit.edu
Wed Dec 13 04:33:54 PST 2017
Erich Titl <erich.titl at think.ch> writes:
> SALT# wpa_cli set_network 23 ssid \"NOS-CAFE DA MARINA\"
> Selected interface 'wlan0'
I'm just a lurker here, but if SSIDs can contain spaces (I never
realized that!), then *all* the programs have to be hardened to deal
with spaces in SSIDs correctly. It's not too difficult if you pay close
attention, but it's easy to overlook.
For instance, one "correct" command line would be
# wpa_cli set_network 23 ssid 'NOS-CAFE DA MARINA'
This is also correct:
# wpa_cli set_network 23 ssid "NOS-CAFE DA MARINA"
In both cases, the 4th argument to the wpa_cli program is the string
"NOS-CAFE DA MARINA" (19 characters).
# wpa_cli set_network 23 ssid \"NOS-CAFE DA MARINA\"
would be expected to produce freaky results, since the 4th argument to
wpa_cli is the string '"NOS-CAFE' (8 chars), the 5th is 'DA' (2 chars),
and the 6th is 'MARINA"' (7 chars), since the spaces between the words
aren't quotes (since the double-quotes are quoted, they do not make a
Where it gets tricky is if one of the programs involved is a shell
script; then you have to take special care to always quote the SSID when
Taking a brief look, wpa_cli seems to be a binary executable, so it
shouldn't be needing to take special care about spaces, it probably does
the right thing automatically. But other programs in the suite may have
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