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Filename : ea_sync_user_phpini_settings
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#!/usr/local/cpanel/3rdparty/bin/perl
# cpanel - ea_sync_user_phpini_settings              Copyright 2017 cPanel, Inc.
#                                                           All rights Reserved.
# copyright@cpanel.net                                         http://cpanel.net
# This code is subject to the cPanel license. Unauthorized copying is prohibited

package ea_sync_user_phpini_settings;

use strict;

use Cpanel::Config::Httpd   ();
use Getopt::Param::Tiny     ();
use Cpanel::PwCache         ();
use Cpanel::AccessIds       ();
use Cwd                     ();
use Path::Iter              ();
use Cpanel::ProgLang        ();
use Cpanel::ArrayFunc::Uniq ();
use Cpanel::Version         ();

#### barf ##
# <facepalm> paths before ULC in INC can cause the user-run-code to error out with things like:
#    Can't locate Cpanel/Exception/CORE.pm:   /root/perl5/lib/perl5//x86_64-linux-64int/Cpanel/Exception/CORE.pm: Permission denied at /usr/local/cpanel/Cpanel/Exception.pm line 43.
#    Can't locate Cpanel/Carp.pm:   /root/perl5/lib/perl5//x86_64-linux-64int/Cpanel/Carp.pm: Permission denied at (eval .*) line 1.
# etc, on and on down the rabbit hole depending on how you try to hack around it
while ( $INC[0] ne '/usr/local/cpanel' ) { shift @INC }
#### /barf ##

our ( $php_version_info, $php, $ini_hr );

exit( run(@ARGV) ) unless caller;

sub run {
    my (@args) = @_;

    die "This script can only be run by root\n" if $> != 0;

    die "This script only operates when you are under EasyApache 4\n" if !Cpanel::Config::Httpd::is_ea4();

    # Handle v58 grossfully (not a typo)
    eval 'require Cpanel::PHP::Config;';
    if ( $@ || !defined &Cpanel::Version::get_short_release_number || Cpanel::Version::get_short_release_number() < 62 ) {
        print "Nothing to do (only applies to v64 and newer)\n";
        exit(0);
    }

    my $param = Getopt::Param::Tiny->new( { array_ref => \@args, help_coderef => \&_help, known_only => [ 'user', 'all-users' ], no_args_help => 1, validate => \&_validate, } );

    my $starting_dir = Cwd::cwd();
    $php_version_info = Cpanel::PHP::Config::get_php_version_info();
    die "There are no PHP packages installed via ea4\n" if !@{ $php_version_info->{versions} };

    $php = Cpanel::ProgLang->new( type => 'php' );
    $ini_hr = {};

    my @users;
    if ( $param->param('all-users') ) {
        require Cpanel::Config::LoadUserDomains;
        require Cpanel::PwCache;

        Cpanel::PwCache::Build::init_passwdless_pwcache();
        my %user_map = Cpanel::Config::LoadUserDomains::loaduserdomains( undef, 0, 1 );
        @users = sort keys %user_map;
    }
    else {
        @users = $param->param('user');
    }

    for my $user (@users) {
        print "Operating on “$user” …\n";
        _process_user($user);
        print " … done!\n";
    }

    chdir($starting_dir) or die "Could not chdir back to $starting_dir: $!\n";

    return 0;    # exit clean
}

###############
#### helpers ##
###############

sub _process_user {
    my ($user) = @_;

    my $user_ar      = [ Cpanel::PwCache::getpwnam($user) ];
    my $user_homedir = $user_ar->[7];

    my $user_php = Cpanel::PHP::Config::get_php_config_for_users( [$user] );
    my $user_dir_to_package_map = {};
    for my $dom ( sort keys %{$user_php} ) {
        next if exists $user_dir_to_package_map->{ $user_php->{$dom}{documentroot} };
        $user_dir_to_package_map->{ $user_php->{$dom}{documentroot} } = $user_php->{$dom}{phpversion};
    }

    my $count = Cpanel::AccessIds::do_as_user( $user, sub { return _proc_dir( $user_homedir, $user_dir_to_package_map ) } );

    if ( !$count->{errors} && !$count->{processed} ) {
        print "\tNo php.ini files found.\n";
    }
    else {
        $count->{processed} ||= 0;
        $count->{errors}    ||= 0;
        print "\tSuccessfully processed php.ini files: $count->{processed}\n";
        print "\tphp.ini files that had errors during processing: $count->{errors}\n";
    }
}

sub _proc_dir {
    my ( $user_homedir, $user_dir_to_package_map ) = @_;
    my $count;
    chdir($user_homedir) or die "failed to chdir($user_homedir): $!\n";
    my @errors;
    my $fetch = Path::Iter::get_iterator( '.', { stop_when_opendir_fails => 1, errors => \@errors } );
    while ( my $next_path = $fetch->() ) {
        if ( $next_path =~ m{(?:^|/)php\.ini$} ) {
            print "\tProcessing $user_homedir/$next_path …\n";

            eval {
                my $path_parent = $next_path;
                $path_parent =~ s{/?php\.ini$}{};
                my $package = $user_dir_to_package_map->{ $path_parent ? "$user_homedir/$path_parent" : $user_homedir } || $php_version_info->{default};
                $ini_hr->{$package} ||= $php->get_ini( 'package' => $package );
                $ini_hr->{$package}->set_directives( path => $next_path, directives => { _ea_sync_user_phpini_settings => 1 }, userfiles => 1 );
            };
            if ($@) {
                warn "ERROR: $@\n" if $@;
                $count->{errors}++;
            }
            else {
                $count->{processed}++;
            }
            print "\t … done!\n";
        }
    }
    if (@errors) {
        warn "\tThe following errors occured while traversing “$user_homedir” (some php.ini files may not have been processed):\n";
        for my $err (@errors) {
            warn "\t\t$err->{function}(" . join( ", ", @{ $err->{args} } ) . ") – $err->{error}\n";
        }
    }

    return $count;
}

sub _validate {
    my ($param) = @_;
    my $ok      = 1;                            # innocnent until proven guilty ;)
    my @users   = $param->param('user');
    my $all     = $param->param('all-users');

    if ( $all && @users ) {
        warn "You cannot specifiy both --all-users and --user options.\n";
        $ok = 0;
    }

    if ( grep m/^(?:--user|)$/, @users ) {
        warn "--user requires a value (--user=<USER>)\n";
        $ok = 0;
    }

    if ( @users > Cpanel::ArrayFunc::Uniq::uniq(@users) ) {
        warn "Each <USER> must be unique!\n";
        $ok = 0;
    }

    for my $user ( Cpanel::ArrayFunc::Uniq::uniq(@users) ) {
        next if $user =~ m/^(?:--user|)$/;    # already looked for this once
        if ( !Cpanel::PwCache::getpwnam($user) ) {
            warn "“$user” is not a user on this system\n";
            $ok = 0;
        }
    }

    return 1 if $ok;
    return;
}

sub _help {
    my ($param) = @_;

    print <<"END_HELP";
Usage: $0 --user=<USER> [--user=<USER2> [--user=<USER3> …]] | --all-users

For given users sync any php.ini files in their home directory to corresponding .user.ini and, on some versions, .htaccess.

Options:
   --help          this screen
   --user=<USERS>  specify the user to operate on, may be given more than once
   --all-users     process all users

END_HELP
    exit( $param->param('help') ? 0 : 1 );
}

1;