晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Current File : //scripts/xfer_rcube_schema_migrate.pl
#!/usr/local/cpanel/3rdparty/bin/perl

# cpanel - scripts/xfer_rcube_schema_migrate.pl    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::xfer_rcube_schema_migrate;
use strict;

use DBI ();

use Cpanel::Email::RoundCube::DBI ();

## if invoked as a script, there is nothing in the call stack
my $invoked_as_script = !caller();
__PACKAGE__->script(@ARGV) if ($invoked_as_script);

sub script {
    ## read password from stdin, for security
    ## see positional argument list below
    my ( $package, @args ) = @_;
    my $dbpassword = scalar(<STDIN>);

    my ( $dbname, $dbhost, $src_version, $dest_version, $dbuser ) = @args;

    ## SOMEDAY: need RaiseError off, until we are certain the schema in the database is the
    ##   same version as the Roundcube that is installed
    ## PrintError is off as well; the temporary database, as it is generated via pkgacct's
    ##   mysqldump, will not have the messages, cache, or session table; the various
    ##   schema migration scripts on these tables will spam the whm xfer screen
    my $dbh = Cpanel::Email::RoundCube::DBI::mysql_db_connect(
        $dbname, $dbhost, $dbuser, $dbpassword,
        { RaiseError => 0, PrintError => 0 }
    );

    my $rv = do_migration( $dbh, $src_version, $dest_version );

    $dbh->disconnect();

    unless ($rv) {
        die "Roundcube schema migration failed for temp database '$dbname'";
    }
}

#NOTE: The $src_dbh is assumed to be USEing the correct DB!
sub do_migration {
    my ( $src_dbh, $src_version, $dest_version ) = @_;

    ## SOMEDAY: there is a trade-off here between communicating the $src_version via
    ##   parameters, and computing the $src_version from reading the cp_schema_table;
    ##   at the moment, I feel more secure in sending it in; eventually, might modify
    ##   pkgacct to include cp_schema_version in the mysqldump, and additionally to
    ##   ensure the table exists here

    #NOTE: Should this also call Cpanel::Email::RoundCube::write_version_file()?
    #(It would need to pass in the version as a parameter.)

    my $opts = { installed_version => $src_version };
    return Cpanel::Email::RoundCube::DBI::ensure_schema_update( $src_dbh, 'mysql', $dest_version, $opts );
}

1;

haha - 2025