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#!/usr/local/cpanel/3rdparty/bin/perl
# cpanel - cpanel_easy_sanity_check                  Copyright 2015 cPanel, Inc.
#                                                           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 Cpanel::Config::Sources    ();
use Cpanel::Encoder::Tiny      ();
use Cpanel::SafeDir::MK        ();
use Cpanel::SafeRun::Dynamic   ();
use Getopt::Param              ();
use Cpanel::FileUtils          ();
use Cpanel::Config::Httpd::EA4 ();

if ( Cpanel::Config::Httpd::EA4::is_ea4() ) {
    die "EasyApache3 is not available when EasyApache4 is in effect.\n";
}

my $param          = Getopt::Param->new();
my $loud           = $param->param('quiet') ? 0 : 1;
my $html           = $param->param('as-html') ? 1 : 0;
my $need_build     = $param->param('build') ? 1 : 0;
my $httpupdate_uri = $param->param('tier') || 'easy';

# 1. Ensure proper --tier usage
# 2. Easyapache builds are written to easy-$version on update server.  However,
#    for backwards compatibility, the latest customer build now links to 'easy'
#    e.g. easy, easy-x.y.z, or easy-project-x.y.z
die "Incorrect 'tier' argument" unless $httpupdate_uri =~ /^easy(?:\-(?:\w+\-)?\d+\.\d+\.\d+)?$/;

# Case 59284: abort esayapache when passed bad profile name.
# if $need_build is 1, validate profile.
if ($need_build) {
    my $profile_full_name = $param->param('profile') || '';

    # validate profile only if the arg contains a file name or a path.
    if ( ( length($profile_full_name) > 0 ) && !( lc($profile_full_name) eq '--profile' ) ) {
        my $cust_path = '/var/cpanel/easy/apache/profile/custom';

        # if arg is just a file name, put it in the dir.
        if ( $profile_full_name !~ m{/} ) {
            $profile_full_name = $cust_path . '/' . $profile_full_name;
        }

        $profile_full_name = Cpanel::FileUtils::cleanpath($profile_full_name);

        # ensure .yaml extension.
        $profile_full_name =~ s/(\.yaml$)//i;
        $profile_full_name .= '.yaml';

        if ( !-e $profile_full_name ) {
            die "Specified profile \"" . $profile_full_name . "\" does not exist\n";
        }
        elsif ( -s $profile_full_name <= 0 ) {
            die "Specified profile \"" . $profile_full_name . "\" has zero size\n";
        }
    }
}

if ( -e '/var/cpanel/easy_skip_cpanelsync' ) {
    print "/var/cpanel/easy_skip_cpanelsync exists. Skipping update of EasyApache\n";
    exit;
}

my $opt_mod_dir = '/var/cpanel/perl/easy';

if ( defined $param->param('test-branch') ) {
    print "The '--test-branch' command line flag is obsolete. Ignoring.\n";
}
else {
    my $test_branch_path = '/var/cpanel/use_easy_test_branch';
    if ( -e $test_branch_path ) {
        my $msg = "Use of $test_branch_path is obsolete. I will now delete that file....  ";
        unlink $test_branch_path;
        $msg .= -e $test_branch_path ? 'Not deleted' : 'Deleted';
        print $msg . "\n";
    }
}

if ( !-d $opt_mod_dir ) {
    Cpanel::SafeDir::MK::safemkdir($opt_mod_dir) or die "Could not create opt mod directory: $!";
}

my $action = $param->param('action') || '';
my $skip = $action eq '_pre_cpanel_sync_screen' || $param->param('help') || $param->param('skip-cpanelsync') ? 1 : 0;
exit if $skip;

my %CPSRC          = Cpanel::Config::Sources::loadcpsources();
my $easources_host = get_easources_host( \%CPSRC );

my $cpanelsync = "$opt_mod_dir/.cpanelsync";

## audit case 45000: leaving cpanelsync invocations as is, as they operate over httpupdate's "easy/" directory
if ( -x '/usr/local/cpanel/scripts/cpanelsync' ) {
    my $orig = -e $cpanelsync ? _hash_file($cpanelsync) : 0;

    for my $run ( [ "/cpanelsync/$httpupdate_uri/Cpanel", "$opt_mod_dir/Cpanel" ], [ "/cpanelsync/$httpupdate_uri/profiles", '/var/cpanel/' ], ) {
        $|++;
        Cpanel::SafeRun::Dynamic::livesaferun(
            'prog'      => [ '/usr/local/cpanel/scripts/cpanelsync', '--signed=1', '--quiet=1', $easources_host, @{$run} ],
            'formatter' => sub {
                my ($line) = @_;

                if ($html) {
                    chomp $line;
                    $line = Cpanel::Encoder::Tiny::safe_html_encode_str($line);
                    $line .= "<br />\n";
                }

                return $line if $loud;

                if (   $line =~ /The update server is currently updating its files/i
                    || $line =~ /It may take up to 30 minutes before access can be obtained/i
                    || $line =~ /Waiting 30 seconds for access to the update server/i
                    || $line =~ /Checking again/i ) {

                    return $line;
                }

                return '';    # empty string to stay quiet && avoid uninit value warnings
            },
        );
    }

    my $crnt = -e $cpanelsync ? _hash_file($cpanelsync) : 0;

    unlink '/var/cpanel/easy/apache/state.yaml' if !$orig || !$crnt || $orig ne $crnt;
}
else {
    die '/usr/local/cpanel/scripts/cpanelsync must exist and be executable';
}

sub get_easources_host {
    my $sources_hr = shift;

    # First look for EA-specific, else fall back on the generic httpupdate host
    for my $name (qw[ EASOURCES HTTPUPDATE ]) {
        my $host = $sources_hr->{$name};
        return $host if $host;
    }

    # We'll never arrive here;  Cpanel::Config::Sources always sets a suitable default
    return;
}

sub _hash_file {
    my ($file) = @_;
    return Digest::SHA->new(512)->addfile($file)->hexdigest;
}