dbiproxy
A proxy server for the DBD::Proxy driver
Synopsis
dbiproxy <options> --localport=<port>
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examples
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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::ProxyServer::main(). See DBI::ProxyServer for
details.
Available
options include:
--chroot=dir
( UNIX only)
After doing a bind(), change root directory to the
given directory by doing a chroot(). This is useful
for security, but it restricts the environment 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. However, command line arguments in turn take
precedence over the config file. See the "
CONFIGURATION FILE " section in the
DBI::ProxyServer documentation for details on the config
file.
--debug
Turn debugging mode on. Mainly
this asserts that logging messages of level
"debug" are created.
--facility=mode
( UNIX only)
Facility to use for Sys::Syslog. The default is
daemon.
--group=gid
After doing a bind(),
change the real and effective GID to the
given. This is useful, 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 one 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 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 creating 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 useful if you have neither threads
nor fork(), for example on the Macintosh. For
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. Default is to not create a
pidfile.
--user=uid
After doing a bind(),
change the real and effective UID to the
given. This is useful, 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 immediately.
see also
DBI::ProxyServer,
DBD::Proxy, DBI
author
Copyright (c) 1997 Jochen Wiedmann
Am Eisteich 9
72555 Metzingen
Germany
Email: joe[:at:]ispsoft[:dot:]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 .