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#!/usr/local/cpanel/3rdparty/bin/perl # cpanel - scripts/custom_backup_destination.pl.sample # Copyright 2022 cPanel, L.L.C. # All rights reserved. # copyright@cpanel.net http://cpanel.net # This code is subject to the cPanel license. Unauthorized copying is prohibited use strict; use warnings; use Cwd qw(getcwd abs_path); use File::Spec; use File::Copy; use File::Path qw(make_path remove_tree); use autodie qw(:all copy); # These are the commands that a custom destination script must process my %commands = ( put => \&my_put, get => \&my_get, ls => \&my_ls, mkdir => \&my_mkdir, chdir => \&my_chdir, rmdir => \&my_rmdir, delete => \&my_delete, ); # There must be at least the command and the local directory usage() if ( @ARGV < 2 ); # # The command line arguments passed to the script will be in the following order: # command, local_directory, command arguments, and optionally, host and user # The local directory is passed in so we know from which directory to run the command # we need to pass this in each time since we start the script fresh for each command # my ( $cmd, $local_dir, @args ) = @ARGV; # complain if the command does not exist usage() unless exists $commands{$cmd}; # For this example transport, we are going to simply copy everything under this directory my $dest_root_dir = '/custom_transport_demo'; mkdir $dest_root_dir unless -d $dest_root_dir; # Step into the local directory # This will be under the directory that we have as the file destination $local_dir = File::Spec->catdir( $dest_root_dir, $local_dir ); make_path($local_dir) unless -d $local_dir; chdir $local_dir; # Run our command $commands{$cmd}->(@args); # # This script should only really be executed by the custom backup destination type # If someone executes it directly out of curiosity, give them usage info # sub usage { my @cmds = sort keys %commands; print STDERR "This script is for implementing a custom backup destination\n"; print STDERR "It requires the following arguments: cmd, local_dir, cmd_args\n"; print STDERR "These are the valid commands: @cmds\n"; exit 1; } # # Convert a path to be under our destination directory # Absolute paths will be directly under it, # relative paths will be relative to the local directory # sub convert_path { my ($path) = @_; if ( $path =~ m|^/| ) { $path = File::Spec->catdir( $dest_root_dir, $path ); } else { $path = File::Spec->catdir( $local_dir, $path ); } return $path; } # # Convert a full path to the path under the the directory # where we copy all the files # sub get_sub_directory { my ($path) = @_; # The first part will be the destination root directory, # Remove that part of the path and we will have the subdirectory $path =~ s|^$dest_root_dir||; return $path; } # # This portion contains the implementations for the various commands # that the script needs to support in order to implement a custom destination # # # Copy a local file to a remote destination # sub my_put { my ( $local, $remote ) = @_; $remote = convert_path($remote); # Make sure the full destination directory exists my ( undef, $dir, undef ) = File::Spec->splitpath($remote); make_path($dir) unless ( $dir and -d $dir ); copy( $local, $remote ); return; } # # Copy a remote file to a local destination # sub my_get { my ( $remote, $local ) = @_; $remote = convert_path($remote); copy( $remote, $local ); return; } # # Print out the results of doing an ls operation # The calling program will expect the data to be # in the format supplied by 'ls -l' and have it # printed to STDOUT # sub my_ls { my ($path) = @_; $path = convert_path($path); # Cheesy, but this is a demo my $ls = `ls -al $path`; # Remove the annoying 'total' line $ls =~ s|^total[^\n]*\n||; print $ls; return; } # # Create a directory on the remote destination # sub my_mkdir { my ($path) = @_; $path = convert_path($path); make_path($path); die "Failed to create $path" unless -d $path; return; } # # Change into a directory on the remote destination # This does not have the same meaning as it normally would since the script # is run anew for each command call. # This needs to do the operation to ensure it doesn't fail # then print the new resulting directory that the calling program # will pass in as the local directory for subsequent calls # sub my_chdir { my ($path) = @_; $path = convert_path($path); chdir $path; print get_sub_directory( getcwd() ) . "\n"; return; } # # Recursively delete a directory on the remote destination # sub my_rmdir { my ($path) = @_; $path = convert_path($path); remove_tree($path); die "$path still exists" if -d $path; return; } # # Delete an individual file on the remote destination # sub my_delete { my ($path) = @_; $path = convert_path($path); unlink $path; return; }
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