dbiproxy - A proxy server for the DBD::Proxy driver
SYNOPSIS
dbiproxy <options> --port <port>
DESCRIPTION
This tool is just a front end for the DBI::ProxyServer
package. All it does is picking options from the command
line and calling DBI:\fIs0:ProxyServer::main(). See
DBI::ProxyServer(3) for details.
Available options include:
--chroot=dir
(UNIX only) After doing a bind(), change root direc
tory to the given directory by doing a chroot(). This
is usefull for security, but it restricts the environ
ment a lot. For example, you need to load DBI drivers
in the config file or you have to create hard links to
Unix sockets, if your drivers are using them. For
example, with MySQL, a config file might contain the
following lines:
my $rootdir = '/var/dbiproxy';
my $unixsockdir = '/tmp';
my $unixsockfile = 'mysql.sock';
foreach $dir ($rootdir, "$rootdir$unixsockdir") {
mkdir 0755, $dir;
}
link("$unixsockdir/$unixsockfile",
"$rootdir$unixsockdir/$unixsockfile");
require DBD::mysql;
{
'chroot' => $rootdir,
...
}
If you don't know chroot(), think of an FTP server
where you can see a certain directory tree only after
logging in. See also the --group and --user options.
--configfile=file
Config files are assumed to return a single hash ref
that overrides the arguments of the new method. How
ever, command line arguments in turn take precedence
over the config file. See the the section on "CONFIGU
RATION FILE" section below for details on the config
file.
--debug
Turn debugging mode on. Mainly this asserts that
--facility=mode
(UNIX only) Facility to use for the Sys::Syslog (3)
entry elsewhere in this document. The default is dae
mon.
--group=gid
After doing a bind(), change the real and effective
GID to the given. This is usefull, if you want your
server to bind to a privileged port (<1024), but don't
want the server to execute as root. See also the
--user option.
GID's can be passed as group names or numeric values.
--localaddr=ip
By default a daemon is listening to any IP number that
a machine has. This attribute allows to restrict the
server to the given IP number.
--localport=port
This attribute sets the port on which the daemon is
listening. It must be given somehow, as there's no
default.
--logfile=file
Be default logging messages will be written to the
syslog (Unix) or to the event log (Windows NT). On
other operating systems you need to specify a log
file. The special value "STDERR" forces logging to
stderr. See Net::Daemon::Log(3) for details.
--mode=modename
The server can run in three different modes, depending
on the environment.
If you are running Perl 5.005 and did compile it for
threads, then the server will create a new thread for
each connection. The thread will execute the server's
Run() method and then terminate. This mode is the
default, you can force it with "--mode=threads".
If threads are not available, but you have a working
fork(), then the server will behave similar by creat
ing a new process for each connection. This mode will
be used automatically in the absence of threads or if
you use the "--mode=fork" option.
Finally there's a single-connection mode: If the
server has accepted a connection, he will enter the
Run() method. No other connections are accepted until
the Run() method returns (if the client disconnects).
This operation mode is usefull if you have neither
debugging purposes you can force this mode with
"--mode=single".
--pidfile=file
(UNIX only) If this option is present, a PID file will
be created at the given location.
--user=uid
After doing a bind(), change the real and effective
UID to the given. This is usefull, if you want your
server to bind to a privileged port (<1024), but don't
want the server to execute as root. See also the
--group and the --chroot options.
UID's can be passed as group names or numeric values.
--version
Supresses startup of the server; instead the version
string will be printed and the program exits immedi
ately.
AUTHOR
Copyright (c) 1997 Jochen Wiedmann
Am Eisteich 9
72555 Metzingen
Germany
Email: joe@ispsoft.de
Phone: +49 7123 14881
The DBI::ProxyServer module is free software; you can
redistribute it and/or modify it under the same terms as
Perl itself. In particular permission is granted to Tim
Bunce for distributing this as a part of the DBI.
SEE ALSO
DBI::ProxyServer(3), DBD::Proxy(3), DBI(3)
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