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| Current File : //scripts/custom_backup_destination.pl.sample |
#!/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;
}