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Is it possible to "reconvert" the WifiConfigStore.xml back to wpa_supplicant.conf?

Is it possible to "reconvert" the WifiConfigStore.xml back to wpa_supplicant.conf?

I tried your script today to import a wpa_supplicant.conf from Android 7 (Fairphone Open OS) into Android 10 (Lineage 17.1), but it needed some changes to work. In the hope that this might benefit others, I'm documenting what I did here.

Without changes, the produced file produces the following logcat warning:

05-17 19:59:18.227   749  2676 E WifiConfigManager: XML deserialization of store failed. All saved networks are lost!
05-17 19:59:18.227   749  2676 E WifiConfigManager: org.xmlpull.v1.XmlPullParserException: Configuration key does not match. Retrieved: "Jodocus"-WPA_PSK, Calculated: "Jodocus"WPA_PSK

Comparing the system-generated file with the script-generated file confirms that there should not be a dash between the SSID and the keymgmt. Other changes are the file version number (1 vs 3), but that does not seem to matter, Android autobumps it. And some of the Allowed fields have a few more bits in the script-generated version (probably because the script allows everything by default). However, the AllowedProtocols field does seem to cause a problem:

05-17 20:04:17.656   741  2710 E SupplicantStaIfaceHal: java.lang.IllegalArgumentException: Invalid protoMask bit in wificonfig: 3

Bit 3 is WAPI, I suspect Android 10 does not support it anymore (here is also some docs with the WAPI value grayed out). Unsetting that bit, fixes the error.

With the changes below, I managed to import 63 of my networks (one failed, but that one is a bit weird in wpa_supplication.conf).

--- a/convert_wifi.pl
+++ b/convert_wifi.pl
@@ -77,8 +77,8 @@ ()
        #   9 OWE - Opportunististic Wireless Encryption
        #   10 SUITE_B_192
 
-       #my $AllowedProtocols = '03'; # WPA1+WPA2
-       my $AllowedProtocols = '0b'; # WPA1+WPA2+WAPI
+       my $AllowedProtocols = '03'; # WPA1+WPA2
+       #my $AllowedProtocols = '0b'; # WPA1+WPA2+WAPI
        # https://developer.android.com/reference/android/net/wifi/WifiConfiguration.Protocol
        #   0 WPA1 (deprecated)
        #   1 RSN WPA2/WPA3/IEEE 802.11i
@@ -147,7 +147,7 @@ ()
        }
 
        $SSID = quote_xml $SSID;
-       my $ConfigKey = "${SSID}-$key_mgmt";
+       my $ConfigKey = "${SSID}$key_mgmt";
        my $priority = $CUR{priority} || 0;
        
        # output main config block with all variables filled-in

I get an error when pushing the generated file.

(I've enabled root access on ADB with no luck.)

adb push WifiConfigStore.xml /data/misc/wifi/WifiConfigStore.xml
adb: error: stat failed when trying to push to /data/misc/wifi/WifiConfigStore.xml: Permission denied

Hello,

First of all, thank you for providing this tool. I am having a slight issue with the change applied only after the Android device is rebooted, not right after the WiFi is enabled again.

Steps to reproduce (tested on a box with Android 9):

1. Prepare WiFiConfigStore.xml with new WiFi networks on a computer
2. Disable WiFi on Android device
3. Push WiFiConfigStore.xml
4. Enable WiFi on Android device
5. Check Saved WiFi networks - Android doesn't display any
6. Reboot the Android device
7. Check Saved WiFi networks - Android shows the networks from uploaded WiFiConfigStore.xml

Is there a way to apply the changes without rebooting the entire device?