Special characters not handled in PSK

[glynhudson]

https://community.openenergymonitor.org/t/connecting-to-wifi-some-characters-not-supported-in-network-password/2226

[glynhudson]

Possible solution:

<?php


$ssid = "my-ssid";
$passphrase = "sdh4%71$";

$psk = hash_pbkdf2("sha1",$passphrase,$ssid, 4096, 64);

$out = "network={\n";
$out .= "\tssid=\"$ssid\"\n";
$out .= "\t#psk=\"$passphrase\"\n";
$out .= "\tpsk=$psk\n";
$out .= "}\n";

print $out;

[glynhudson]

https://github.com/emoncms/wifi/blob/master/wifi.php#L165

[glynhudson]

Fixed by #13

[glynhudson]

Hi @emrysr,

I've had reports of special characters still not being allowed in WiFi PSK, any chance you could check this again? https://community.openenergymonitor.org/t/emoncms-wifi-module-special-characters-not-supported-in-network-password/2226/7

[glynhudson]

openenergymonitor/emonpi#118

One of the Wifi hotspots near me has a single quote in it's name.

It is basically:
"<name>'s wifi"

Due to the single quote I get Javascript errors when trying to save wifi settings.

[lachiemurray]

I believe this fixes the issue: #36. Would you be able to review @emrysr @glynhudson ?

Thank you!

[glynhudson]

Apostrophes are still not supported

Possibly related to
raspberrypi/linux#2918