File Manager

X7ROOT File Manager

Current Path: /usr/local/cpanel/scripts

📁 ..
📄 MirrorSearch_pingtest(2.38 KB)
📄 activesync-invite-reply(1.69 KB)
📄 add_dns(2.36 KB)
📄 adddns(2.36 KB)
📄 addpop(6.08 KB)
📄 addsystemuser(3.27 KB)
📄 adduser(92 B)
📄 apachelimits(4.31 KB)
📄 archive_sync_zones(3.02 KB)
📄 auto-adjust-mysql-limits(1.81 KB)
📄 autorepair(1.24 KB)
📄 backups_clean_metadata_for_missing_backups(1.57 KB)
📄 backups_create_metadata(15.75 KB)
📄 backups_list_user_files(4.56 KB)
📄 balance_linked_node_quotas(2.58 KB)
📄 biglogcheck(1.69 KB)
📄 build_bandwidthdb_root_cache_in_background(1.52 KB)
📄 build_cpnat(3.41 KB)
📄 build_mail_sni(3.87 KB)
📄 build_maxemails_config(1.14 KB)
📄 builddovecotconf(6.76 KB)
📄 buildeximconf(7 KB)
📄 buildhttpdconf(2.6 KB)
📄 buildnsdconf(1.01 KB)
📄 buildpureftproot(539 B)
📄 ccs-check(4.91 KB)
📄 check_cpanel_pkgs(10.75 KB)
📄 check_cpanel_rpms(218 B)
📄 check_domain_tls_service_domains.pl(6.68 KB)
📄 check_immutable_files(5.49 KB)
📄 check_mail_spamassassin_compiledregexps_body_0(187 B)
📄 check_maxmem_against_domains_count(3.57 KB)
📄 check_mount_procfs(2.02 KB)
📄 check_mysql(5.55 KB)
📄 check_security_advice_changes(8.28 KB)
📄 check_unmonitored_enabled_services(4.56 KB)
📄 check_unreliable_resolvers(3.59 KB)
📄 check_users_my_cnf(6.05 KB)
📄 check_valid_server_hostname(7.66 KB)
📄 checkalldomainsmxs(2.4 KB)
📄 checkbashshell(1.18 KB)
📄 checkccompiler(1.22 KB)
📄 checkexim.pl(3.1 KB)
📄 checklink(1.29 KB)
📄 checknsddirs(1014 B)
📄 checkusers(856 B)
📄 chkmydns(561 B)
📄 chkpaths(141 B)
📄 chpass(416 B)
📄 ckillall(1.11 KB)
📄 clean_dead_mailman_locks(2.09 KB)
📄 clean_up_temp_wheel_users(2.44 KB)
📄 clean_user_php_sessions(4.76 KB)
📄 cleandns(13.09 KB)
📄 cleandns8(417 B)
📄 cleanmsglog(735 B)
📄 cleanphpsessions(932 B)
📄 cleanphpsessions.php(658 B)
📄 cleanquotas(1.61 KB)
📄 cleansessions(5.91 KB)
📄 cleanupinterchange(2.64 KB)
📄 cleanupmysqlprivs(533 B)
📄 clear_cpaddon_ui_caches(1.27 KB)
📄 clear_orphaned_virtfs_mounts(3.56 KB)
📄 comparecdb(1.52 KB)
📄 compilers(2.86 KB)
📄 compilerscheck(999 B)
📄 configure_firewall_for_cpanel(520 B)
📄 configure_rh_firewall_for_cpanel(520 B)
📄 configure_rh_ipv6_firewall_for_cpanel(520 B)
📄 convert2dovecot(682 B)
📄 convert_accesshash_to_token(4.07 KB)
📄 convert_and_migrate_from_legacy_backup(1.97 KB)
📄 convert_maildir_to_mdbox(1.66 KB)
📄 convert_mdbox_to_maildir(1.66 KB)
📄 convert_roundcube_mysql2sqlite(25.28 KB)
📄 convert_to_dovecot_delivery(4.33 KB)
📄 convert_whmxfer_to_sqlite(1.46 KB)
📄 copy_user_mail_as_root(1.25 KB)
📄 copy_user_mail_as_user(1.34 KB)
📄 cpaddonsup(3.25 KB)
📄 cpan_config(2.8 KB)
📁 cpan_sandbox
📄 cpanel_initial_install(67.36 KB)
📄 cpanelsync(28.31 KB)
📄 cpanelsync_postprocessor(1.62 KB)
📄 cpanpingtest(965 B)
📄 cpbackup(44.77 KB)
📄 cpbackup_transport_file(5.65 KB)
📄 cpdig(1.81 KB)
📄 cpfetch(1.23 KB)
📄 cphulkdblacklist(433 B)
📄 cphulkdwhitelist(1.3 KB)
📄 cpservice(2.87 KB)
📄 cpuser_port_authority(19.29 KB)
📄 cpuser_service_manager(10.85 KB)
📄 createacct(24.57 MB)
📄 custom_backup_destination.pl.sample(5.06 KB)
📄 custom_backup_destination.pl.skeleton(2.84 KB)
📄 dav_change_hostname(3.57 KB)
📄 dcpumon-wrapper(850 B)
📄 delpop(6.2 KB)
📄 detect_env_capabilities(508 B)
📄 disable_prelink(2.77 KB)
📄 disable_sqloptimizer(1.49 KB)
📄 disablefileprotect(2.09 KB)
📄 distro_changed_hook(1.16 KB)
📄 dnscluster(4.44 KB)
📄 dnsqueuecron(1.29 KB)
📄 dnssec-cluster-keys(3.75 KB)
📄 dovecot_maintenance(7.93 KB)
📄 dovecot_set_defaults.pl(984 B)
📄 dumpcdb(866 B)
📄 dumpinodes(687 B)
📄 dumpquotas(616 B)
📄 dumpstor(913 B)
📄 ea4_fresh_install(2.64 KB)
📄 edit_cpanelsync_exclude_list(2.58 KB)
📄 editquota(3.44 KB)
📄 elevate-cpanel(377.87 KB)
📄 email_archive_maintenance(6.15 KB)
📄 email_hold_maintenance(1.46 KB)
📄 enable_spf_dkim_globally(8.83 KB)
📄 enable_sqloptimizer(1.57 KB)
📄 enablefileprotect(2.1 KB)
📄 ensure_autoenabled_features(2.5 MB)
📄 ensure_conf_dir_crt_key(4.82 KB)
📄 ensure_cpuser_file_ip(2.55 KB)
📄 ensure_crontab_permissions(1.08 KB)
📄 ensure_dovecot_memory_limits_meet_minimum(3.13 KB)
📄 ensure_hostname_resolves(2.57 KB)
📄 ensure_includes(601 B)
📄 ensure_vhost_includes(13.53 KB)
📄 exim_tidydb(2.96 KB)
📄 eximconfgen(1.32 KB)
📄 eximstats_spam_check(867 B)
📄 export_horde_calendars_to_ics(15.07 KB)
📄 export_horde_contacts_to_vcf(13.94 KB)
📄 exportmydnsdb(3.47 KB)
📄 expunge_expired_certificates_from_sslstorage(3.56 KB)
📄 expunge_expired_pkgacct_sessions(852 B)
📄 expunge_expired_transfer_sessions(1.06 KB)
📄 fastmail(5.16 KB)
📄 featuremod(1.92 KB)
📄 fetchfile(422 B)
📄 find_and_fix_rpm_issues(6.99 KB)
📄 find_outdated_services(5.41 KB)
📄 find_pids_with_inotify_watch_on_path(3.66 KB)
📄 fix-cpanel-perl(28.82 KB)
📄 fix-listen-on-localhost(3.52 KB)
📄 fix-web-vhost-configuration(6.15 KB)
📄 fix_addon_permissions(7.68 KB)
📄 fix_dns_zone_ttls(1.34 KB)
📄 fix_innodb_tables(4.05 KB)
📄 fix_pear_registry(4.07 KB)
📄 fix_reseller_acls(10.88 KB)
📄 fixetchosts(4.32 KB)
📄 fixheaders(572 B)
📄 fixmailinglistperms(1008 B)
📄 fixmailman(2.09 KB)
📄 fixnamedviews(1.22 KB)
📄 fixndc(413 B)
📄 fixquotas(17.45 KB)
📄 fixrelayd(1.74 KB)
📄 fixrndc(16.48 KB)
📄 fixtar(503 B)
📄 fixtlsversions(4.7 KB)
📄 fixvaliases(2 KB)
📄 fixwebalizer(966 B)
📄 forcelocaldomain(895 B)
📄 ftpfetch(2.2 KB)
📄 ftpquotacheck(8.31 KB)
📄 ftpsfetch(2.36 KB)
📄 ftpupdate(261 B)
📄 gather_update_log_stats(4.25 KB)
📄 gather_update_logs_setupcrontab(5.45 KB)
📄 gemwrapper(1.74 KB)
📄 gencrt(6.26 KB)
📄 generate_account_suspension_include(5.7 KB)
📄 generate_google_drive_credentials(1.11 KB)
📄 generate_google_drive_oauth_uri(984 B)
📄 generate_maildirsize(13.94 KB)
📄 gensysinfo(1.16 KB)
📄 get_locale_from_legacy_name_info(1.99 KB)
📄 getremotecpmove(12.67 KB)
📄 grpck(1.19 KB)
📄 hackcheck(3.02 KB)
📄 hook(1.45 KB)
📄 httpspamdetect(2.66 KB)
📄 hulk-unban-ip(3.93 MB)
📄 import_exim_data(8.39 KB)
📄 importmydnsdb(11.34 KB)
📄 increase_filesystem_limits(891 B)
📄 initacls(4.99 KB)
📄 initfpsuexec(444 B)
📄 initquotas(19.47 KB)
📄 initsuexec(4.03 KB)
📄 install_cpanel_analytics(1.93 KB)
📄 install_dovecot_fts(1.57 KB)
📄 install_plugin(2.8 KB)
📄 installpkg(575 B)
📄 installpostgres(6.56 KB)
📄 installsqlite3(1.82 KB)
📄 ipcheck(3.93 KB)
📄 ipusage(7.45 KB)
📄 isdedicatedip(602 B)
📄 jetbackup-check(3.69 KB)
📄 killdns(422 B)
📄 killdns-dnsadmin(1.15 KB)
📄 killmysqluserprivs(433 B)
📄 killmysqlwildcard(1.15 KB)
📄 killpvhost(853 B)
📄 killspamkeys(937 B)
📄 link_3rdparty_binaries(1.24 KB)
📄 linksubemailtomainacct(3.17 KB)
📄 listcheck(538 B)
📄 listsubdomains(1.05 KB)
📄 litespeed-check(3.86 KB)
📄 locale_export(4.82 KB)
📄 locale_import(4.35 KB)
📄 locale_info(3.99 KB)
📄 logo.dat(205 B)
📄 magicloader(1.94 KB)
📄 maildir_converter(6.08 KB)
📄 mailperm(16.58 KB)
📄 mailscannerupdate(2.42 KB)
📄 mainipcheck(10 KB)
📄 maintenance(46.62 KB)
📄 make_config(407 B)
📄 make_hostname_unowned(1.16 KB)
📄 manage_extra_marketing(12.41 KB)
📄 manage_greylisting(16.19 KB)
📄 manage_mysql_profiles(20.02 KB)
📄 migrate-pdns-conf(9.83 KB)
📄 migrate_local_ini_to_php_ini(7.41 KB)
📄 migrate_whmtheme_file_to_userdata(2.95 KB)
📄 mkwwwacctconf(2.33 KB)
📄 modify_accounts(4.09 KB)
📄 modify_featurelist(9.2 KB)
📄 modify_packages(3.65 KB)
📄 modsec_vendor(15.63 KB)
📄 mysqlconnectioncheck(6.55 KB)
📄 mysqlpasswd(4.09 KB)
📄 named.ca(1.57 KB)
📄 named.rfc1912.zones(774 B)
📄 nixstatsagent.sh(58.67 KB)
📄 notify_expiring_certificates(9.37 KB)
📄 notify_expiring_certificates_on_linked_nodes(1.33 KB)
📄 oopscheck(1.12 KB)
📄 optimize_eximstats(3.88 KB)
📄 patch_mail_spamassassin_compiledregexps_body_0(2.39 KB)
📄 patchfdsetsize(2.72 KB)
📄 pedquota(2.26 KB)
📄 perform_sqlite_auto_rebuild_db_maintenance(2.2 KB)
📄 perlinstaller(528 B)
📄 perlmods(1.18 KB)
📄 php_fpm_config(9.73 KB)
📁 php_sandbox
📄 phpini_tidy(687 B)
📄 pkgacct(87.82 KB)
📄 post_snapshot(3.16 KB)
📄 post_sync_cleanup(6.09 KB)
📄 primary_virtual_host_migration(2.44 KB)
📄 process_pending_cpanel_php_pear_registration(3.49 KB)
📄 process_site_templates(7.27 KB)
📄 proxydomains(9.34 KB)
📄 ptycheck(724 B)
📄 purge_modsec_log(1.53 KB)
📄 purge_old_config_caches(2.08 KB)
📄 pwck(708 B)
📄 quickdnslookup(1.13 KB)
📄 quickwhoisips(2.29 KB)
📄 quota_auto_fix(1.41 KB)
📄 quotacheck(22.36 KB)
📄 rawchpass(460 B)
📄 rdate(4.8 KB)
📄 realadduser(5.61 KB)
📄 realchpass(3.26 KB)
📄 realperlinstaller(5.67 KB)
📄 realrawchpass(425 B)
📄 rebuild_available_addons_packages_cache(1.27 KB)
📄 rebuild_available_rpm_addons_cache(1.27 KB)
📄 rebuild_bandwidthdb_root_cache(1.45 KB)
📄 rebuild_dbmap(5.8 KB)
📄 rebuild_provider_openid_connect_links_db(1.01 KB)
📄 rebuild_whm_chrome(2.22 KB)
📄 rebuilddnsconfig(26.21 KB)
📄 rebuildhttpdconf(2.6 KB)
📄 rebuildinstalledssldb(2.85 KB)
📄 rebuildippool(509 B)
📄 rebuildnsdzones(1.14 KB)
📄 rebuilduserssldb(948 B)
📄 refresh-dkim-validity-cache(5.97 KB)
📄 regenerate_tokens(2.18 KB)
📄 reloadnsd(821 B)
📄 remote_log_transfer(11.6 KB)
📄 remove_dovecot_index_files(5.89 KB)
📄 removeacct(20.91 MB)
📄 rescan_user_dovecot_fts(2.98 KB)
📄 reset_mail_quotas_to_sane_values(6.82 KB)
📄 resetmailmanurls(2.03 KB)
📄 resetquotas(4.68 KB)
📄 restartsrv(3.23 KB)
📄 restartsrv_apache(422 B)
📄 restartsrv_apache_php_fpm(9.9 MB)
📄 restartsrv_base(9.9 MB)
📄 restartsrv_bind(9.9 MB)
📄 restartsrv_chkservd(427 B)
📄 restartsrv_clamd(9.9 MB)
📄 restartsrv_cpanalyticsd(9.9 MB)
📄 restartsrv_cpanel_php_fpm(9.9 MB)
📄 restartsrv_cpanellogd(9.9 MB)
📄 restartsrv_cpdavd(9.9 MB)
📄 restartsrv_cpgreylistd(9.9 MB)
📄 restartsrv_cphulkd(9.9 MB)
📄 restartsrv_cpipv6(9.9 MB)
📄 restartsrv_cpsrvd(9.9 MB)
📄 restartsrv_crond(9.9 MB)
📄 restartsrv_dnsadmin(9.9 MB)
📄 restartsrv_dovecot(9.9 MB)
📄 restartsrv_exim(9.9 MB)
📄 restartsrv_eximstats(504 B)
📄 restartsrv_ftpd(426 B)
📄 restartsrv_ftpserver(911 B)
📄 restartsrv_httpd(9.9 MB)
📄 restartsrv_imap(437 B)
📄 restartsrv_inetd(2.47 KB)
📄 restartsrv_ipaliases(9.9 MB)
📄 restartsrv_lmtp(437 B)
📄 restartsrv_mailman(9.9 MB)
📄 restartsrv_mydns(9.9 MB)
📄 restartsrv_mysql(9.9 MB)
📄 restartsrv_named(777 B)
📄 restartsrv_nscd(9.9 MB)
📄 restartsrv_nsd(9.9 MB)
📄 restartsrv_p0f(9.9 MB)
📄 restartsrv_pdns(9.9 MB)
📄 restartsrv_pop3(437 B)
📄 restartsrv_postgres(427 B)
📄 restartsrv_postgresql(9.9 MB)
📄 restartsrv_powerdns(442 B)
📄 restartsrv_proftpd(9.9 MB)
📄 restartsrv_pureftpd(9.9 MB)
📄 restartsrv_queueprocd(9.9 MB)
📄 restartsrv_rsyslog(9.9 MB)
📄 restartsrv_rsyslogd(437 B)
📄 restartsrv_spamd(9.9 MB)
📄 restartsrv_sshd(9.9 MB)
📄 restartsrv_syslogd(2.4 KB)
📄 restartsrv_tailwatchd(9.9 MB)
📄 restartsrv_unknown(9.9 MB)
📄 restartsrv_xinetd(422 B)
📄 restorecpuserfromcache(1.96 KB)
📄 restorepkg(36.49 MB)
📄 rfc1912_zones.tar(10 KB)
📄 rpmup(4.77 KB)
📄 rsync-user-homedir.pl(5.76 KB)
📄 run_if_exists(512 B)
📄 run_plugin_lifecycle(3.53 KB)
📄 runstatsonce(440 B)
📄 runweblogs(1.02 KB)
📄 sa-update_wrapper(3.34 KB)
📄 safetybits.pl(844 B)
📄 secureit(4.72 KB)
📄 securemysql(4.54 KB)
📄 securerailsapps(3.58 KB)
📄 securetmp(15.99 KB)
📄 sendicq(474 B)
📄 servicedomains(9.34 KB)
📄 set_mailman_archive_perms(1.75 KB)
📄 set_php_memory_limits(3.67 KB)
📄 setpostgresconfig(6.04 KB)
📄 setup_greylist_db(16.19 KB)
📄 setup_modsec_db(1.3 KB)
📄 setup_systemd_timer_for_plugins(3.92 KB)
📄 setupftpserver(10.47 KB)
📄 setupmailserver(9.55 KB)
📄 setupnameserver(13.75 KB)
📄 shrink_modsec_ip_database(12.97 KB)
📄 simpleps(3.05 KB)
📄 slurp_exim_mainlog(5.78 KB)
📄 smartcheck(15.13 KB)
📄 smtpmailgidonly(8.15 KB)
📄 snapshot_prep(5.88 KB)
📄 spamassassin_dbm_cleaner(5.85 KB)
📄 spamassassindisable(3.74 KB)
📄 spamboxdisable(2.27 KB)
📄 sshcontrol(14.38 KB)
📄 ssl_crt_status(3.84 KB)
📄 suspendacct(18.01 KB)
📄 suspendmysqlusers(4.42 KB)
📄 swapip(3.82 KB)
📄 sync-mysql-users-from-grants(1.2 KB)
📄 sync_child_accounts(1.77 KB)
📄 sync_contact_emails_to_cpanel_users_files(1.14 KB)
📄 synccpaddonswithsqlhost(6.59 KB)
📄 synctransfers(1.92 KB)
📄 syslog_check(1.36 KB)
📄 sysup(645 B)
📄 test_sa_compiled(1.07 KB)
📄 transfer_account_as_user(2.34 KB)
📄 transfer_accounts_as_root(4.76 KB)
📄 transfer_in_progress(3.08 KB)
📄 transfer_in_progress.pod(312 B)
📄 transfermysqlusers(9.53 MB)
📄 try-later(7.95 KB)
📄 unblockip(667 B)
📄 uninstall_cpanel_analytics(1.2 KB)
📄 uninstall_dovecot_fts(562 B)
📄 uninstall_plugin(2.84 KB)
📄 unlink_service_account(2.62 KB)
📄 unpkgacct(4.6 KB)
📄 unslavenamedconf(863 B)
📄 unsuspendacct(17.8 KB)
📄 unsuspendmysqlusers(6.71 KB)
📄 upcp(31.56 KB)
📄 upcp-running(2.7 KB)
📄 upcp.static(708.6 KB)
📄 update-packages(4.77 KB)
📄 update_apachectl(480 B)
📄 update_db_cache(430 B)
📄 update_dkim_keys(1.45 KB)
📄 update_exim_rejects(1.21 KB)
📄 update_existing_mail_quotas_for_account(4.78 KB)
📄 update_known_proxy_ips(1002 B)
📄 update_local_rpm_versions(4.56 KB)
📄 update_mailman_cache(8.34 KB)
📄 update_mysql_systemd_config(1.25 KB)
📄 update_neighbor_netblocks(487 B)
📄 update_sa_config(2.14 KB)
📄 update_spamassassin_config(10.73 KB)
📄 update_users_jail(691 B)
📄 update_users_vhosts(801 B)
📄 updatedomainips(605 B)
📄 updatenameserverips(1.66 KB)
📄 updatenow(5.18 KB)
📄 updatenow.static(1.91 MB)
📄 updatesigningkey(1.95 KB)
📄 updatessldomains(1.81 KB)
📄 updatesupportauthorizations(2.49 KB)
📄 updateuserdatacache(2.47 KB)
📄 updateuserdomains(774 B)
📄 upgrade_bandwidth_dbs(2.22 KB)
📄 upgrade_subaccount_databases(2.73 KB)
📄 userdata_wildcard_cleanup(5.74 KB)
📄 userdirctl(5.01 KB)
📄 validate_sshkey_passphrase(1.21 KB)
📄 verify_api_spec_files(757 B)
📄 verify_pidfile(1.96 KB)
📄 verify_vhost_includes(7.34 KB)
📄 vps_optimizer(7.82 KB)
📄 vzzo-fixer(725 B)
📄 whmlogin(2.33 KB)
📄 whoowns(1.13 KB)
📄 wpt_license(6.27 MB)
📄 wwwacct(24.57 MB)
📄 wwwacct2(88 B)
📄 xfer_rcube_schema_migrate.pl(2.4 KB)
📄 xfer_rcube_uid_resolver.pl(1.8 KB)
📄 xferpoint(3.13 KB)
📄 xfertool(16.14 KB)
📄 zoneexists(800 B)

Editing: upcp

#!/usr/local/cpanel/3rdparty/bin/perl

# cpanel - scripts/upcp                            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

package scripts::upcp;

BEGIN {
    unshift @INC, q{/usr/local/cpanel};

# if we are being called with a compile check flag ( perl -c ), skip the begin block
    # so we don't actually call upcp.static when just checking syntax and such is OK
    return if $^C;

# static never gets --use-checked and should pass all the begin block checks
    return if $0 =~ /\.static$/;

# let the '--use-check' instance compiled
    if ( grep { $_ eq '--use-check' } @ARGV ) {
        no warnings;

# dynamic definition of the INIT block
        eval "INIT { exit(0); }";
        return;
    }

system("$0 --use-check >/dev/null 2>&1");

# compilation is ok with '--use-check', we will continue the non static version
    return if $? == 0;

my $static = $0 . ".static";
    if ( -f $static ) {
        print STDERR "We determined that $0 had compilation issues..\n";
        print STDERR "Trying to exec $static " . join( ' ', @ARGV ) . "\n";
        exec( $^X, $static, @ARGV );
    }
}

use cPstrict;
no warnings;    ## no critic qw(ProhibitNoWarnings)

use Try::Tiny;

use Cpanel::OS::All ();    # PPI USE OK -- make sure Cpanel::OS is embedded
use Cpanel::HiRes ( preload => 'perl' );
use Cpanel::Env                  ();
use Cpanel::Update::IsCron       ();
use Cpanel::Update::Logger       ();
use Cpanel::FileUtils::TouchFile ();
use Cpanel::LoadFile             ();
use Cpanel::LoadModule           ();
use Cpanel::Usage                ();
use Cpanel::UPID                 ();
use IO::Handle                   ();
use POSIX                        ();

use Cpanel::Unix::PID::Tiny ();

my $pidfile              = '/var/run/upcp.pid';
my $lastlog              = '/var/cpanel/updatelogs/last';
my $upcp_disallowed_path = '/root/.upcp_controlc_disallowed';
my $version_upgrade_file = '/usr/local/cpanel/upgrade_in_progress.txt';
our $logger;    # Global for logger object.
our $logfile_path;
my $now;

my $forced         = 0;
my $fromself       = 0;
my $sync_requested = 0;
my $bg             = 0;
my $from_version;
my $pbar_starting_point;

exit( upcp() || 0 ) unless caller();

sub usage {
    print <<EOS;
Usage: scripts/upcp [--bg] [--cron] [--force] [--help] [--log=[path]] [--sync]
Updates cPanel & WHM.

Options:
   --bg         Runs upcp in the background.  Output is only visible in the log.
   --cron       Follow WHM's Update Preferences (/etc/cpupdate.conf).
   --force      Force a reinstall even if the system is up to date.
   --help       Display this documentation.
   --log=[path] Overrides the default log file.
   --sync       Updates the server to the currently-installed version instead of downloading a newer version.
                This will also run other maintenance items, such as package updates and repairs.
                You cannot use the --sync argument with the --force argument.

EOS
    exit 1;    ## no critic(Cpanel::NoExitsFromSubroutines) -- /scripts/upcp needs refactor to use Getopt
}

sub upcp {    ## no critic(Subroutines::ProhibitExcessComplexity) - preserve original code
    Cpanel::Usage::wrap_options( \@ARGV, \&usage, {} );    #display usage information on --help

open( STDERR, ">&STDOUT" ) or die $!;
    local $| = 1;
    umask(0022);

$now = time();

setupenv();
    unset_rlimits();

#############################################################################
    # Record the arguments used when started, check for certain flags
    my $update_is_available_exit_code = 42;

my @retain_argv = @ARGV;

foreach my $arg (@ARGV) {
        if ( $arg =~ m/^--log=(.*)/ ) {
            $logfile_path = $1;
        }
        elsif ( $arg eq '--fromself' ) {
            $fromself = 1;
        }
        elsif ( $arg eq '--force' ) {
            $forced = 1;
            $ENV{'FORCEDCPUPDATE'} = 1;
        }
        elsif ( $arg eq '--sync' ) {
            $sync_requested = 1;
        }
        elsif ( $arg eq '--bg' ) {
            $bg = 1;
        }
    }

if ( $sync_requested && $forced ) {
        print "FATAL: --force and --sync are mutually exclusive commands.\n";
        print "       Force is designed to update your installed version, regardless of whether it's already up to date.\n";
        print "       Sync is designed to update the version already installed, regardless of what is available.\n";
        return 1;
    }

if ( $> != 0 ) {
        die "upcp must be run as root";
    }

#############################################################################
    # Make sure easyapache isn't already running

my $upid = Cpanel::Unix::PID::Tiny->new();

if ( $upid->is_pidfile_running('/var/run/easyapache.pid') ) {
        print "EasyApache is currently running. Please wait for EasyApache to complete before running cPanel Update (upcp).\n";
        return 1;
    }

#############################################################################
    # Make sure we aren't already running && make sure everyone knows we are running

my $curpid = $upid->get_pid_from_pidfile($pidfile) || 0;

if ( $curpid && $curpid != $$ && !$fromself && -e '/var/cpanel/upcpcheck' ) {

my $pidfile_mtime = ( stat($pidfile) )[9];
        my $pidfile_age   = ( time - $pidfile_mtime );

if ( $pidfile_age > 21600 ) {    # Running for > 6 hours
            _logger()->warning("previous PID ($curpid) has been running more than 6 hours. Killing processes.");
            kill_upcp($curpid);          # the pid_file_no_cleanup() will exit if it is still stuck after this
            sleep 1;                     # Give the process group time to die.
        }
        elsif ( my $logpath = _determine_logfile_path_if_running($curpid) ) {
            print _message_about_already_running( $curpid, $logpath ) . "\n";

return 1;
        }
    }

if ( $curpid && $curpid != $$ && !$upid->is_pidfile_running($pidfile) ) {
        print "Stale PID file '$pidfile' (pid=$curpid)\n";
    }

if ( !$fromself && !$upid->pid_file_no_cleanup($pidfile) ) {
        print "process is already running\n";
        return 1;
    }

# to indicate re-entry into upcp
    $pbar_starting_point = $fromself ? 17 : 0;

# record current version
    $from_version = fetch_cpanel_version();

#############################################################################
    # Set up the upcp log directory and files
    setup_updatelogs();

#############################################################################
    # Fork a child to the background. The child does all the heavy lifting and
    # logs to a file; the parent just watches, reads, and parses the log file,
    # displaying what it gets.
    #
    # Note that the parent reads the log in proper line-oriented -- and buffered!
    # -- fashion. An earlier version of this script did raw sysread() calls here,
    # and had to deal with all the mess that that entailed. The current approach
    # reaps all the benefits of Perl's and Linux's significant file read
    # optimizations without needing to re-invent any of them. The parent loop
    # below becomes lean, mean, and even elegant.
    #
    # Note in particular that we do not need to explicitly deal with an
    # end-of-file condition (other than avoiding using undefined data). For
    # exiting the read loop we merely need to test that the child has expired,
    # which in any case is the only situation that can cause an eof condition for
    # us on the file the child is writing.
    #
    # Note, too, that the open() needs to be inside this loop, in case the child
    # has not yet created the file.

if ( !$fromself ) {

# we need to be sure that log an pid are the current one when giving back the end
        unlink $lastlog if $bg;
        if ( my $updatepid = fork() ) {
            $logfile_path ||= _determine_logfile_path_if_running($updatepid);

if ($logger) {    # Close if logged about killing stale process.
                $logger->{'brief'} = 1;    # Don't be chatty about closing
                $logger->close_log;
            }
            if ($bg) {

print _message_about_newly_started( $updatepid, $logfile_path ) . "\n";
                my $progress;
                select undef, undef, undef, .10;
                while ( !-e $lastlog ) {
                    print '.';
                    select undef, undef, undef, .25;
                    $progress = 1;
                }
                print "\n" if $progress;
            }
            else {
                monitor_upcp($updatepid);
            }
            return;
        }
        else {
            $logfile_path ||= _determine_logfile_path_if_running($$);
        }
    }

local $0 = 'cPanel Update (upcp) - Slave';
    open( my $RNULL, '<', '/dev/null' ) or die "Cannot open /dev/null: $!";
    chdir '/';

_logger();    # Open the log file.

#############################################################################
    # Set CPANEL_IS_CRON env var based on detection algorithm
    my $cron_reason = set_cron_env();

$logger->info("Detected cron=$ENV{'CPANEL_IS_CRON'} ($cron_reason)");

my $set_cron_method = $ENV{'CPANEL_IS_CRON'} ? 'set_on' : 'set_off';
    Cpanel::Update::IsCron->$set_cron_method();

my $openmax = POSIX::sysconf( POSIX::_SC_OPEN_MAX() );
    if ( !$openmax ) { $openmax = 64; }
    foreach my $i ( 0 .. $openmax ) { POSIX::close($i) unless $i == fileno( $logger->{'fh'} ); }

POSIX::setsid();

open( STDOUT, '>', '/dev/null' ) or warn $!;
    open( STDERR, '>', '/dev/null' ) or warn $!;

$logger->update_pbar($pbar_starting_point);

##############################################################################
    # Symlink /var/cpanel/updatelogs/last to the current log file
    unlink $lastlog;
    symlink( $logfile_path, $lastlog ) or $logger->error("Could not symlink $lastlog: $!");

#############################################################################
    # now that we have sporked: update our pidfile and ensure it is removed

unlink $pidfile;                       # so that pid_file() won't see it as running.
    if ( !$upid->pid_file($pidfile) ) {    # re-verifies (i.e. upcp was not also started after the unlink() and here) and sets up cleanup of $pidfile for sporked proc
        $logger->error("Could not update pidfile “$pidfile” with BG process: $!\n");
        return 1;
    }

# Assuming we didn't get re-executed from a upcp change after updatenow (!$fromself).
    # If the file is still there from a failed run, remove it.
    unlink($upcp_disallowed_path) if !$fromself && -f $upcp_disallowed_path;

# make sure that the pid file is going to be removed when killed by a signal
    $SIG{INT} = $SIG{HUP} = $SIG{TERM} = sub {    ## no critic qw(Variables::RequireLocalizedPunctuationVars)
        unlink $pidfile;
        if ($logger) {
            $logger->close_log;
            $logger->open_log;
            $logger->error("User hit ^C or killed the process ( pid file '$pidfile' removed ).");
            $logger->close_log;
        }
        return;
    };

#############################################################################
    # Get variables needed for update

my $gotSigALRM     = 0;
    my $connecttimeout = 30;
    my $liveconnect    = 0;
    my $connectedhost  = q{};
    my @HOST_IPs       = ();

## Case 46528: license checks moved to updatenow and Cpanel::Update::Blocker

$logger->debug("Done getting update config variables..");
    $logger->increment_pbar;

#############################################################################
    # Run the preupcp hook

if ( -x '/usr/local/cpanel/scripts/preupcp' ) {
        $logger->info("Running /usr/local/cpanel/scripts/preupcp");
        system '/usr/local/cpanel/scripts/preupcp';
    }

if ( -x '/usr/local/cpanel/scripts/hook' ) {
        $logger->info("Running Standardized hooks");
        system '/usr/local/cpanel/scripts/hook', '--category=System', '--event=upcp', '--stage=pre';
    }

$logger->increment_pbar();

#############################################################################
    # Check mtime on ourselves before sync

# This is the target for a goto in the case that the remote TIERS file is
    # changed sometime during the execution of this upcp run.  It prevents the
    # need for a new script argument and re-exec.
  STARTOVER:

my $mtime = ( stat('/usr/local/cpanel/scripts/upcp') )[9];

$logger->info( "mtime on upcp is $mtime (" . scalar( localtime($mtime) ) . ")" );

#   * If no fromself arg is passed, it's either the first run from crontab or called manually.
    #   * --force is passed to updatenow, has no bearing on upcp itself.
    #   * Even if upcp is changed 3 times in a row during an update (fastest builds ever?), we
    #     would never actually update more than once unless the new upcp script changed the logic below

if ( !$fromself ) {

# run updatenow to sync everything

# updatenow expects --upcp to be passed or will error out
        my @updatenow_args = ( '/usr/local/cpanel/scripts/updatenow', '--upcp', "--log=$logfile_path" );

# if --forced was received, pass it on to updatenow
        if ($forced) { push( @updatenow_args, '--force' ); }

# if --sync was received, pass it on to updatenow. --force makes --sync meaningless.
        if ( !$forced && $sync_requested ) { push( @updatenow_args, '--sync' ); }

# This is the point of no return, we are upgrading
        # and its no longer abortable.

# set flag to disallow ^C during updatenow
        Cpanel::FileUtils::TouchFile::touchfile($upcp_disallowed_path) or $logger->warn("Failed to create: $upcp_disallowed_path: $!");

# call updatenow, if we get a non-zero status, die.
        my $exit_code = system(@updatenow_args);

$logger->increment_pbar(15);

if ( $exit_code != 0 ) {
            my $signal = $exit_code % 256;
            $exit_code = $exit_code >> 8;

analyze_and_report_error(

#success_msg => undef,
                error_msg   => "Running `@updatenow_args` failed, exited with code $exit_code (signal = $signal)",
                type        => 'upcp::UpdateNowFailed',
                exit_status => $exit_code,
                extra       => [
                    'signal'         => $signal,
                    'updatenow_args' => \@updatenow_args,
                ],
            );

return ($exit_code);
        }

# get the new mtime and compare it, if upcp changed, let's run ourselves again.
        # this should be a fairly rare occasion.

my $newmtime = ( stat('/usr/local/cpanel/scripts/upcp') )[9];
        if ( $newmtime ne $mtime ) {

#----> Run our new self (and never come back).
            $logger->info("New upcp detected, restarting ourself");
            $logger->close_log();
            exec '/usr/local/cpanel/scripts/upcp', @retain_argv, '--fromself', "--log=$logfile_path";
        }
    }

#############################################################################
    # Run the maintenance script

my $last_logfile_position;
    my $save_last_logfile_position = sub {
        $last_logfile_position = int( qx{wc -l $logfile_path 2>/dev/null} || 0 );
    };

$logger->close_log();    # Allow maintenance to write to the log

$save_last_logfile_position->();    # remember how many lines has the logfile before starting the maintenance script

my $exit_status;
    my $version_change_happened = -e $version_upgrade_file;
    if ($version_change_happened) {
        $exit_status = system( '/usr/local/cpanel/scripts/maintenance', '--pre', '--log=' . $logfile_path, '--pbar-start=20', '--pbar-stop=30' );
    }
    else {
        $exit_status = system( '/usr/local/cpanel/scripts/maintenance', '--log=' . $logfile_path, '--pbar-start=20', '--pbar-stop=95' );
    }
    $logger->open_log();                # Re-open the log now maintenance is done.

analyze_and_report_error(
        success_msg           => "Pre Maintenance completed successfully",
        error_msg             => "Pre Maintenance ended, however it did not exit cleanly ($exit_status). Please check the logs for an indication of what happened",
        type                  => 'upcp::MaintenanceFailed',
        exit_status           => $exit_status,
        logfile               => $logfile_path,
        last_logfile_position => $last_logfile_position,
    );

# Run post-sync cleanup only if updatenow did a sync
    # Formerly run after layer2 did a sync.
    if ($version_change_happened) {

# post_sync pbar range: 30%-55%
        $logger->close_log();               # Yield the log to post_sync_cleanup
        $save_last_logfile_position->();    # remember how many lines has the logfile before starting the post_sync_cleanup script
        my $post_exit_status = system( '/usr/local/cpanel/scripts/post_sync_cleanup', '--log=' . $logfile_path, '--pbar-start=30', '--pbar-stop=55' );
        $logger->open_log;                  # reopen the log to continue writing messages

analyze_and_report_error(
            success_msg           => "Post-sync cleanup completed successfully",
            error_msg             => "Post-sync cleanup has ended, however it did not exit cleanly. Please check the logs for an indication of what happened",
            type                  => 'upcp::PostSyncCleanupFailed',
            exit_status           => $post_exit_status,
            logfile               => $logfile_path,
            last_logfile_position => $last_logfile_position,
        );

unlink $version_upgrade_file;
        unlink($upcp_disallowed_path) if -f ($upcp_disallowed_path);

# Maintenance pbar range: 55-95%
        $logger->close_log();               # Allow maintenance to write to the log
        $save_last_logfile_position->();    # remember how many lines has the logfile before starting the maintenance --post
        $exit_status = system( '/usr/local/cpanel/scripts/maintenance', '--post', '--log=' . $logfile_path, '--pbar-start=55', '--pbar-stop=95' );
        $logger->open_log();                # Re-open the log now maintenance is done.

analyze_and_report_error(
            success_msg           => "Post Maintenance completed successfully",
            error_msg             => "Post Maintenance ended, however it did not exit cleanly ($exit_status). Please check the logs for an indication of what happened",
            type                  => 'upcp::MaintenanceFailed',
            exit_status           => $exit_status,
            logfile               => $logfile_path,
            last_logfile_position => $last_logfile_position,
        );

# Check for new version... used when updating to next LTS version
        $logger->info("Polling updatenow to see if a newer version is available for upgrade");

$logger->close_log();    # Yield the log to updatenow
        my $update_available = system( '/usr/local/cpanel/scripts/updatenow', "--log=$logfile_path", '--checkremoteversion' );
        $logger->open_log;       # reopen the log to continue writing messages

if ( !$sync_requested && $update_available && ( $update_available >> 8 ) == $update_is_available_exit_code ) {
            $logger->info("\n\n/!\\ - Next LTS version available, restarting upcp and updating system. /!\\\n\n");
            $fromself = 0;
            goto STARTOVER;
        }
    }
    else {
        unlink($upcp_disallowed_path) if -f ($upcp_disallowed_path);
    }

#############################################################################
    # Run the post upcp hook

$logger->update_pbar(95);
    if ( -x '/usr/local/cpanel/scripts/postupcp' ) {
        $logger->info("Running /usr/local/cpanel/scripts/postupcp");
        system '/usr/local/cpanel/scripts/postupcp';
    }

close($RNULL);

#############################################################################
    # All done.
#############################################################################

$logger->update_pbar(100);
    $logger->info( "\n\n\tcPanel update completed\n\n", 1 );
    $logger->info("A log of this update is available at $logfile_path\n\n");

# this happens on exit so it shouldn't be necessary
    $logger->info("Removing upcp pidfile");

unlink $pidfile if -f $pidfile || $logger->warn("Could not delete pidfile $pidfile : $!");

my $update_blocks_fname = '/var/cpanel/update_blocks.config';
    if ( -s $update_blocks_fname ) {
        $logger->warning("NOTE: A system upgrade was not possible due to the following blockers:\n");
        if ( open( my $blocks_fh, '<', $update_blocks_fname ) ) {
            while ( my $line = readline $blocks_fh ) {
                my ( $level, $message ) = split /,/, $line, 2;

# Not using the level in the log, cause the logger can emit additional messages
                # on some of the levels used (fatal emits an 'email message', etc)

# Remove URL from log output. Make sure message is defined.
                if ($message) {
                    $message =~ s/<a.*?>//ig;
                    $message =~ s{</a>}{}ig;
                }

$logger->warning( uc("[$level]") . " - $message" );
            }
        }
        else {
            $logger->warning("Unable to open blocks file! Please review '/var/cpanel/update_blocks.config' manually.");
        }
    }
    else {
        $logger->info("\n\nCompleted all updates\n\n");
    }

$logger->close_log();

return 0;
}

#############################################################################
######[ Subroutines ]########################################################
#############################################################################

sub analyze_and_report_error {
    my %info = @_;

my $type        = $info{type} or die;
    my $exit_status = $info{exit_status};

if ( $exit_status == 0 ) {
        if ( defined $info{success_msg} ) {
            $logger->info( $info{success_msg} );
        }
        return;
    }

my $msg = $info{error_msg} or die;
    my @extra;
    if ( ref $info{extra} ) {
        @extra = @{ $info{extra} };
    }

my $logfile_content = Cpanel::LoadFile::loadfile_r($logfile_path);

# add events to the end of the error log
    if ( try( sub { Cpanel::LoadModule::load_perl_module("Cpanel::Logs::ErrorEvents") } ) ) {
        my ($events) = Cpanel::Logs::ErrorEvents::extract_events_from_log( log => $logfile_content, after_line => $info{last_logfile_position} );
        if ( $events && ref $events && scalar @$events ) {
            my $events_str = join ', ', map { qq["$_"] } @$events;
            $events_str = qq[The following events were logged: ${events_str}.];
            $msg =~ s{(Please check)}{${events_str} $1} or $msg .= ' ' . $events_str;
        }
    }

$logger->error( $msg, 1 );

if ( try( sub { Cpanel::LoadModule::load_perl_module("Cpanel::iContact::Class::$type") } ) ) {
        require Cpanel::Notify;
        Cpanel::Notify::notification_class(
            'class'            => $type,
            'application'      => $type,
            'constructor_args' => [
                'exit_code'         => $exit_status,
                'events_after_line' => $info{last_logfile_position},
                @extra,
                'attach_files' => [ { 'name' => 'update_log.txt', 'content' => $logfile_content, 'number_of_preview_lines' => 25 } ]
            ]
        );
    }
    elsif (
        !try(
            sub {
                Cpanel::LoadModule::load_perl_module("Cpanel::iContact");
                Cpanel::iContact::icontact(
                    'application' => 'upcp',
                    'subject'     => 'cPanel & WHM update failure (upcp)',
                    'message'     => $msg,
                );
            }
        )
    ) {
        $logger->error('Failed to send contact message');
    }

return 1;
}

#############################################################################

sub kill_upcp {
    my $pid    = shift or die;
    my $status = shift || 'hanging';
    my $msg    = shift || "/usr/local/cpanel/scripts/upcp was running as pid '$pid' for longer than 6 hours. cPanel will kill this process and run a new upcp in its place.";

# Attempt to notify admin of the kill.
    if ( try( sub { Cpanel::LoadModule::load_perl_module("Cpanel::iContact::Class::upcp::Killed") } ) ) {
        require Cpanel::Notify;
        Cpanel::Notify::notification_class(
            'class'            => 'upcp::Killed',
            'application'      => 'upcp::Killed',
            'constructor_args' => [
                'upcp_path'    => '/usr/local/cpanel/scripts/upcp',
                'pid'          => $pid,
                'status'       => $status,
                'attach_files' => [ { 'name' => 'update_log.txt', 'content' => Cpanel::LoadFile::loadfile_r($logfile_path), 'number_of_preview_lines' => 25 } ]
            ]
        );
    }
    else {
        try(
            sub {
                Cpanel::LoadModule::load_perl_module("Cpanel::iContact");
                Cpanel::iContact::icontact(
                    'application' => 'upcp',
                    'subject'     => "cPanel update $status",
                    'message'     => $msg,
                );
            }
        );
    }

print "Sending kill signal to process group for $pid\n";
    kill -1, $pid;    # Kill the process group

for ( 1 .. 60 ) {
        print "Waiting for processes to die\n";
        waitpid( $pid, POSIX::WNOHANG() );
        last if ( !kill( 0, $pid ) );
        sleep 1;
    }

if ( kill( 0, $pid ) ) {
        print "Could not kill upcp nicely. Doing kill -9 $pid\n";
        kill 9, $pid;
    }
    else {
        print "Done!\n";
    }
    return;
}

#############################################################################

sub setupenv {
    Cpanel::Env::clean_env();
    delete $ENV{'DOCUMENT_ROOT'};
    delete $ENV{'SERVER_SOFTWARE'};
    if ( $ENV{'WHM50'} ) {
        $ENV{'GATEWAY_INTERFACE'} = 'CGI/1.1';
    }
    ( $ENV{'USER'}, $ENV{'HOME'} ) = ( getpwuid($>) )[ 0, 7 ];
    $ENV{'PATH'} .= ':/sbin:/usr/sbin:/usr/bin:/bin:/usr/local/bin';
    $ENV{'LANG'}   = 'C';
    $ENV{'LC_ALL'} = 'C';
}

sub unset_rlimits {

# This is required if upcp started running from a pre-1132
    eval {
        local $SIG{__DIE__};
        require Cpanel::Rlimit;
        Cpanel::Rlimit::set_rlimit_to_infinity();
    };
}

#############################################################################

sub setup_updatelogs {
    return if ( -d '/var/cpanel/updatelogs' );

unlink('/var/cpanel/updatelogs');
    mkdir( '/var/cpanel/updatelogs', 0700 );
}

sub set_cron_env {

# Do not override the env var if set.
    return 'env var CPANEL_IS_CRON was present before this process started.' if ( defined $ENV{'CPANEL_IS_CRON'} );

if ( grep { $_ eq '--cron' } @ARGV ) {
        $ENV{'CPANEL_IS_CRON'} = 1;
        return 'cron mode set from command line';
    }

if ( $ARGV[0] eq 'manual' ) {
        $ENV{'CPANEL_IS_CRON'} = 0;
        return 'manual flag passed on command line';
    }

if ($forced) {
        $ENV{'CPANEL_IS_CRON'} = 0;
        return '--force passed on command line';
    }

if ( -t STDOUT ) {
        $ENV{'CPANEL_IS_CRON'} = 0;
        return 'Terminal detected';
    }

if ( $ENV{'SSH_CLIENT'} ) {
        $ENV{'CPANEL_IS_CRON'} = 0;
        return 'SSH connection detected';
    }

# cron sets TERM=dumb
    if ( $ENV{'TERM'} eq 'dumb' ) {
        $ENV{'CPANEL_IS_CRON'} = 1;
        return 'TERM detected as set to dumb';
    }

# Check if parent is whostmgr
    if ( readlink( '/proc/' . getppid() . '/exe' ) =~ m/whostmgrd/ ) {
        $ENV{'CPANEL_IS_CRON'} = 0;
        return 'parent process is whostmgrd';
    }

# Default to cron enabled.
    $ENV{'CPANEL_IS_CRON'} = 1;
    return 'default';
}

#############################################################################

sub fetch_cpanel_version {
    my $version;
    my $version_file = '/usr/local/cpanel/version';
    return if !-f $version_file;
    my $fh;
    local $/ = undef;
    return if !open $fh, '<', $version_file;
    $version = <$fh>;
    close $fh;
    $version =~ s/^\s+|\s+$//gs;
    return $version;
}

#############################################################################

sub monitor_upcp {
    my $updatepid = shift or die;

$0 = 'cPanel Update (upcp) - Master';

$SIG{INT} = $SIG{TERM} = sub {
        print "User hit ^C\n";
        if ( -f $upcp_disallowed_path ) {
            print "Not allowing upcp slave to be killed during updatenow, just killing monitoring process.\n";
            exit;
        }

print "killing upcp\n";

kill_upcp( $updatepid, "aborted", "/usr/local/cpanel/scripts/upcp was aborted by the user hitting Ctrl-C." );
        exit;
    };

$SIG{HUP} = sub {
        print "SIGHUP detected; closing monitoring process.\n";
        print "The upcp slave has not been affected\n";
        exit;
    };

# Wait till the file shows up.
    until ( -e $logfile_path ) {
        select undef, undef, undef, .25;    # sleep just a bit
    }

# Wait till we're allowed to open it.
    my $fh;
    until ( defined $fh && fileno $fh ) {
        $fh = IO::Handle->new();
        if ( !open $fh, '<', $logfile_path ) {
            undef $fh;
            select undef, undef, undef, .25;    # sleep just a bit
            next;
        }
    }

# Read the file until the pid dies.
    my $child_done = 0;
    while (1) {

# Read all the available lines.
        while (1) {
            my $line = <$fh>;
            last if ( !defined $line || $line eq '' );
            print $line;
        }

# Once the child is history, we need to do yet one more final read,
        # on the off chance (however remote) that she has written one last
        # hurrah after we last checked. Hence the following.

last            if $child_done;                       # from prev. pass
        $child_done = 1 if -1 == waitpid( $updatepid, 1 );    # and loop back for one more read

select undef, undef, undef, .25;                      # Yield idle time to the cpu
    }

close $fh if $fh;
    exit;
}

sub _logger {
    return $logger if $logger;
    $logger = Cpanel::Update::Logger->new( { 'logfile' => $logfile_path, 'stdout' => 1, 'log_level' => 'info' } );

# do not set the pbar in the constructor to do not display the 0 % in bg mode
    $logger->{pbar} = $pbar_starting_point;

return $logger;
}

sub _determine_logfile_path_if_running ($pid) {
    my $upid = Cpanel::UPID::get($pid);

return $upid ? "/var/cpanel/updatelogs/update.$upid.log" : undef;
}

#----------------------------------------------------------------------
# HANDLE WITH CARE!! This string is parsed
# in at least one place. (cf. Cpanel::Update::Start)
sub _message_about_newly_started ( $updatepid, $logfile_path ) {

return "upcp is going into background mode (PID $updatepid). You can follow “$logfile_path” to watch its progress.";
}

return "cPanel Update (upcp) is already running. Please wait for the previous upcp (PID $curpid, log file “$logpath”) to complete, then try again. You can use the command 'ps --pid $curpid' to check if the process is running. You may wish to use '--force'.";
}

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