serverutil.pm

视频监控网络部分的协议ddns,的模块的实现代码,请大家大胆指正.

# 
# /*
#  * *********** WARNING **************
#  * This file generated by ModPerl::WrapXS/0.01
#  * Any changes made here will be lost
#  * ***********************************
#  * 01: lib/ModPerl/Code.pm:708
#  * 02: lib/ModPerl/WrapXS.pm:624
#  * 03: lib/ModPerl/WrapXS.pm:1173
#  * 04: Makefile.PL:423
#  * 05: Makefile.PL:325
#  * 06: Makefile.PL:56
#  */
# 


package Apache2::ServerUtil;

use strict;
use warnings FATAL => 'all';



use Apache2::XSLoader ();
our $VERSION = '2.000002';
Apache2::XSLoader::load __PACKAGE__;



1;
__END__

=head1 NAME

Apache2::ServerUtil - Perl API for Apache server record utils




=head1 Synopsis

  use Apache2::ServerUtil ();
  $s = Apache2::ServerUtil->server;
  
  # push config
  $s->add_config(['ServerTokens off']);
  
  # add components to the Server signature
  $s->add_version_component("MyModule/1.234");
  
  # access PerlSetVar/PerlAddVar values
  my $srv_cfg = $s->dir_config;
  
  # check command line defines
  print "this is mp2"
      if Apache2::ServerUtil::exists_config_define('MODPERL2');
  
  # get PerlChildExitHandler configured handlers
  @handlers = @{ $s->get_handlers('PerlChildExitHandler') || []};
  
  # server build and version info:
  $when_built = Apache2::ServerUtil::get_server_built();
  $version = Apache2::ServerUtil::get_server_version();
  
  # ServerRoot value
  $server_root = Apache2::ServerUtil::server_root();
  
  # get 'conf/' dir path (avoid using this function!)
  my $dir = Apache2::ServerUtil::server_root_relative($r->pool, 'conf');
  
  # set child_exit handlers
  $r->set_handlers(PerlChildExitHandler => \&handler);
  
  # server level PerlOptions flags lookup
  $s->push_handlers(ChildExit => \&child_exit)
      if $s->is_perl_option_enabled('ChildExit');
  
  # extend HTTP to support a new method
  $s->method_register('NEWGET');
  
  # register server shutdown callback
  Apache2::ServerUtil::server_shutdown_register_cleanup(sub { Apache2::Const::OK });
  
  # do something only when the server restarts
  my $cnt = Apache2::ServerUtil::restart_count();
  do_something_once() if $cnt > 1;





=head1 Description

C<Apache2::ServerUtil> provides the L<Apache server
object|docs::2.0::api::Apache2::ServerRec> utilities API.




=head1 Methods API

C<Apache2::ServerUtil> provides the following functions and/or methods:





=head2 C<add_config>

Dynamically add Apache configuration:

  $s->add_config($lines);

=over 4

=item obj: C<$s>
( C<L<Apache2::ServerRec object|docs::2.0::api::Apache2::ServerRec>> )

=item arg1: C<$lines> ( ARRAY ref )

An ARRAY reference containing configuration lines per element, without
the new line terminators.

=item ret: no return value

=item since: 2.0.00

=back

See also:
C<L<$r-E<gt>add_config|docs::2.0::api::Apache2::RequestUtil/C_add_config_>>

For example:

Add a configuration section at the server startup (e.g. from
I<startup.pl>):

  use Apache2::ServerUtil ();
  my $conf = <<'EOC';
  PerlModule Apache2::MyExample
  <Location /perl>
    SetHandler perl-script
    PerlResponseHandler Apache2::MyExample
  </Location>
  EOC
  Apache2::ServerUtil->server->add_config([split /\n/, $conf]);







=head2 C<add_version_component>

Add a component to the version string

  $s->add_version_component($component);

=over 4

=item obj: C<$s>
( C<L<Apache2::ServerRec object|docs::2.0::api::Apache2::ServerRec>> )

=item arg1: C<$component> ( string )

The string component to add

=item ret: no return value

=item since: 2.0.00

=back

This function is usually used by modules to advertise themselves to
the world. It's picked up by such statistics collectors, like
netcraft.com, which accomplish that by connecting to various servers
and grabbing the server version response header (C<Server>). Some
servers choose to fully or partially conceal that header.

This method should be invoked in the
C<L<PerlPostConfigHandler|docs::2.0::user::handlers::server/C_PerlPostConfigHandler_>>
phase, which will ensure that the Apache core version number will
appear first.

For example let's add a component I<"Hikers, Inc/0.99999"> to the
server string at the server startup:

  use Apache2::ServerUtil ();
  use Apache2::Const -compile => 'OK';
  
  Apache2::ServerUtil->server->push_handlers(
      PerlPostConfigHandler => \&add_my_version);
  
  sub add_my_version {
      my ($conf_pool, $log_pool, $temp_pool, $s) = @_;
      $s->add_version_component("Hikers, Inc/0.99999");
      return Apache2::Const::OK;
  }

or of course you could register the
C<L<PerlPostConfigHandler|docs::2.0::user::handlers::server/C_PerlPostConfigHandler_>>
handler directly in F<httpd.conf>

Now when the server starts, you will something like:

  [Thu Jul 15 12:15:28 2004] [notice] Apache/2.0.51-dev (Unix)
  mod_perl/1.99_15-dev Perl/v5.8.5 Hikers, Inc/0.99999
  configured -- resuming normal operations

Also remember that the C<ServerTokens> directive value controls
whether the component information is displayed or not.









=head2 C<server_shutdown_cleanup_register>

Register server shutdown cleanup callback:

  Apache2::ServerUtil::server_shutdown_cleanup_register($sub);

=over 4

=item arg1: C<$sub> ( CODE ref or SUB name )



=item ret: no return value

=item since: 2.0.00

=back

This function can be used to register a callback to be run once at the
server shutdown (compared to
C<L<PerlChildExitHandler|docs::2.0::user::handlers::server/C_PerlChildExitHandler_>>
which will execute the callback for each exiting child process).

For example in order to arrange the function C<do_my_cleanups()> to be
run every time the server shuts down (or restarts), run the following
code at the server startup:

  Apache2::ServerUtil::server_shutdown_cleanup_register(\&do_my_cleanups);

It's necessary to run this code at the server startup (normally
F<startup.pl>. The function will croak if run after the
C<L<PerlPostConfigHandler|docs::2.0::user::handlers::server/C_PerlPostConfigHandler_>>
phase.






=head2 C<dir_config>

C<$s-E<gt>dir_config()> provides an interface for the per-server
variables specified by the C<PerlSetVar> and C<PerlAddVar> directives,
and also can be manipulated via the
C<L<APR::Table|docs::2.0::api::APR::Table>> methods.

  $table  = $s->dir_config();
  $value  = $s->dir_config($key);
  @values = $s->dir_config($key);
  $s->dir_config($key, $val);

=over 4

=item obj: C<$s>
( C<L<Apache2::ServerRec object|docs::2.0::api::Apache2::ServerRec>> )

=item opt arg2: C<$key> ( string )

Key string

=item opt arg3: C<$val> ( string )

Value string

=item ret: ...

Depends on the passed arguments, see further discussion

=item since: 2.0.00

=back

The keys are case-insensitive.

  $t = $s->dir_config();

dir_config() called in a scalar context without the C<$key> argument
returns a I<HASH> reference blessed into the I<APR::Table> class. This
object can be manipulated via the I<APR::Table> methods. For available
methods see I<APR::Table>.

  @values = $s->dir_config($key);

If the C<$key> argument is passed in the list context a list of all
matching values will be returned. This method is ineffective for big
tables, as it does a linear search of the table. Thefore avoid using
this way of calling dir_config() unless you know that there could be
more than one value for the wanted key and all the values are wanted.

  $value = $s->dir_config($key);

If the C<$key> argument is passed in the scalar context only a single
value will be returned. Since the table preserves the insertion order,
if there is more than one value for the same key, the oldest value
assosiated with the desired key is returned. Calling in the scalar
context is also much faster, as it'll stop searching the table as soon
as the first match happens.

  $s->dir_config($key => $val);

If the C<$key> and the C<$val> arguments are used, the set() operation
will happen: all existing values associated with the key C<$key> (and
the key itself) will be deleted and C<$value> will be placed instead.

  $s->dir_config($key => undef);

If C<$val> is I<undef> the unset() operation will happen: all existing
values associated with the key C<$key> (and the key itself) will be
deleted.







=head2 C<exists_config_define>

Check for a definition from the server startup command line
(e.g. C<-DMODPERL2>)

  $result = Apache2::ServerUtil::exists_config_define($name);

=over 4

=item arg1: C<$name> ( string )

The define string to check for

=item ret: C<$result> ( boolean )

true if defined, false otherwise

=item since: 2.0.00

=back

For example:

  print "this is mp2"
      if Apache2::ServerUtil::exists_config_define('MODPERL2');








=head2 C<get_handlers>

Returns a reference to a list of handlers enabled for
a given phase.

  $handlers_list = $s->get_handlers($hook_name);

=over 4

=item obj: C<$s>
( C<L<Apache2::ServerRec object|docs::2.0::api::Apache2::ServerRec>> )

=item arg1: C<$hook_name> ( string )

a string representing the phase to handle.

=item ret: C<$handlers_list> (ref to an ARRAY of CODE refs)

a list of references to the handler subroutines

=item since: 2.0.00

=back

See also:
C<L<$r-E<gt>add_config|docs::2.0::api::Apache2::RequestUtil/C_get_handlers_>>

For example:

A list of handlers configured to run at the I<child_exit> phase:

  @handlers = @{ $s->get_handlers('PerlChildExitHandler') || []};







=head2 C<get_server_built>

Get the date and time that the server was built

  $when_built = Apache2::ServerUtil::get_server_built();

=over 4

=item ret: C<$when_built> ( string )

The server build time string

=item since: 2.0.00

=back







=head2 C<get_server_version>

Get the server version string

  $version = Apache2::ServerUtil::get_server_version();

=over 4

=item ret: C<$version> ( string )

The server version string

=item since: 2.0.00

=back







=head2 C<is_perl_option_enabled>

check whether a server level C<PerlOptions> flag is enabled or not.

  $result = $s->is_perl_option_enabled($flag);

=over 4

=item obj: C<$s>
( C<L<Apache2::ServerRec object|docs::2.0::api::Apache2::ServerRec>> )

=item arg1: C<$flag> ( string )

=item ret: C<$result> ( boolean )