AM Debug v4.0.5 Run#3058

backup: use cache directory for storing unencrypted backups

When encryption is enabled, App Manager used to use the backup directory for
encryption and decryption, which had several issues:
1. Any adversary watching the directory can detect and obtain a reference to the
unencrypted file, thereby, can also access the unencrypted data
2. For folder that are synced to clouds, creation of unencrypted files would
trigger a sync which would waste bandwidth.

Storing the unencrypted data this way ensures that an adversary cannot access
those transient files without privileged permissions.

Signed-off-by: Muntashir Al-Islam <muntashirakon@riseup.net>

I've forgot to cleanup the directory after restoring. Will do in the next commit.

AM Debug v4.0.5 Run#3059

backup: cleanup temporary path after completing backup/restore

Signed-off-by: Muntashir Al-Islam <muntashirakon@riseup.net>

AM Debug v4.0.5 Run#3060

refactor: move MetadataManager.Metadata to BackupMetadataV2

Signed-off-by: Muntashir Al-Islam <muntashirakon@riseup.net>

AM Debug v4.0.5 Run#3061

backup: apply Magisk hide/denylist rules only if it is enabled

In App Info tab, adding a package or process to Magisk hide/denylist continues
to enable the feature automatically since it is done actively.

Signed-off-by: Muntashir Al-Islam <muntashirakon@riseup.net>

AM Debug v4.0.5 Run#3062

interceptor: Add workaround for parsing flags in Android < 15

https://issuetracker.google.com/issues/265489457
Signed-off-by: Muntashir Al-Islam <muntashirakon@riseup.net>

AM Debug v4.0.5 Run#3063

refactor: modify backup framework to add support for the upcoming backup v5

Also added tests for v4 backups to prevent breaking compatibility in the future.

Signed-off-by: Muntashir Al-Islam <muntashirakon@riseup.net>

AM Debug v4.0.5 Run#3064

refactor: modify backup framework to add support for the upcoming backup v5 2/3

Signed-off-by: Muntashir Al-Islam <muntashirakon@riseup.net>

AM Debug v4.0.5 Run#3065

refactor: modify backup framework to add support for the upcoming backup v5 3/3

Signed-off-by: Muntashir Al-Islam <muntashirakon@riseup.net>

AM Debug v4.0.5 Run#3066

backup: enable backup v5 in debug mode

Signed-off-by: Muntashir Al-Islam <muntashirakon@riseup.net>

AM Debug v4.0.5 Run#3067

backup: add support for ADB backup

A new backup option, "ADB data", has been added. This option supersedes the
"Internal data" option and the "External data" option. If the option is enabled,
an AB formatted backup is taken instead of internal or external storage backup.
The backup file takes the usual data<numeric> filename with .ab extension (and
other extensions depending on the encryption method).

Signed-off-by: Muntashir Al-Islam <muntashirakon@riseup.net>