104 lines
2.9 KiB
Perl
104 lines
2.9 KiB
Perl
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package User::pwent;
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use strict;
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BEGIN {
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use Exporter ();
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use vars qw(@EXPORT @EXPORT_OK %EXPORT_TAGS);
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@EXPORT = qw(getpwent getpwuid getpwnam getpw);
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@EXPORT_OK = qw(
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$pw_name $pw_passwd $pw_uid
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$pw_gid $pw_quota $pw_comment
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$pw_gecos $pw_dir $pw_shell
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);
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%EXPORT_TAGS = ( FIELDS => [ @EXPORT_OK, @EXPORT ] );
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}
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use vars @EXPORT_OK;
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# Class::Struct forbids use of @ISA
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sub import { goto &Exporter::import }
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use Class::Struct qw(struct);
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struct 'User::pwent' => [
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name => '$',
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passwd => '$',
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uid => '$',
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gid => '$',
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quota => '$',
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comment => '$',
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gecos => '$',
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dir => '$',
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shell => '$',
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];
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sub populate (@) {
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return unless @_;
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my $pwob = new();
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( $pw_name, $pw_passwd, $pw_uid,
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$pw_gid, $pw_quota, $pw_comment,
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$pw_gecos, $pw_dir, $pw_shell, ) = @$pwob = @_;
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return $pwob;
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}
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sub getpwent ( ) { populate(CORE::getpwent()) }
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sub getpwnam ($) { populate(CORE::getpwnam(shift)) }
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sub getpwuid ($) { populate(CORE::getpwuid(shift)) }
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sub getpw ($) { ($_[0] =~ /^\d+/) ? &getpwuid : &getpwnam }
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1;
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__END__
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=head1 NAME
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User::pwent - by-name interface to Perl's built-in getpw*() functions
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=head1 SYNOPSIS
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use User::pwent;
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$pw = getpwnam('daemon') or die "No daemon user";
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if ( $pw->uid == 1 && $pw->dir =~ m#^/(bin|tmp)?$# ) {
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print "gid 1 on root dir";
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}
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use User::pwent qw(:FIELDS);
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getpwnam('daemon') or die "No daemon user";
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if ( $pw_uid == 1 && $pw_dir =~ m#^/(bin|tmp)?$# ) {
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print "gid 1 on root dir";
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}
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$pw = getpw($whoever);
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=head1 DESCRIPTION
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This module's default exports override the core getpwent(), getpwuid(),
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and getpwnam() functions, replacing them with versions that return
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"User::pwent" objects. This object has methods that return the similarly
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named structure field name from the C's passwd structure from F<pwd.h>;
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namely name, passwd, uid, gid, quota, comment, gecos, dir, and shell.
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You may also import all the structure fields directly into your namespace
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as regular variables using the :FIELDS import tag. (Note that this still
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overrides your core functions.) Access these fields as
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variables named with a preceding C<pw_> in front their method names.
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Thus, C<$passwd_obj-E<gt>shell()> corresponds to $pw_shell if you import
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the fields.
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The getpw() function is a simple front-end that forwards
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a numeric argument to getpwuid() and the rest to getpwnam().
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To access this functionality without the core overrides,
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pass the C<use> an empty import list, and then access
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function functions with their full qualified names.
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On the other hand, the built-ins are still available
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via the C<CORE::> pseudo-package.
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=head1 NOTE
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While this class is currently implemented using the Class::Struct
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module to build a struct-like class, you shouldn't rely upon this.
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=head1 AUTHOR
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Tom Christiansen
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