Initial commit.

htdocs/emily/magicat/cgi-bin/logout.cgi

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+#! /usr/bin/perl -w
+# Emily Wu's Website
+# logout.cgi: The log-out script.
+
+#  Copyright (c) 2004-2021 imacat.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+# Author: imacat <imacat@mail.imacat.idv.tw>
+# First written: 2004-10-16
+
+use 5.008;
+use strict;
+use warnings;
+use lib $ENV{"DOCUMENT_ROOT"} . qw(/magicat/lib/perl5);
+use Selima::emily;
+local $SIG{"__DIE__"} = \&http_500;
+my $d = new Selima::Destroy;
+# Prototype declaration
+sub main();
+sub check_get();
+sub check_post();
+sub html_page($);
+sub html_logoutform();
+sub html_relogin();
+
+initenv(-dbi        => DBI_NONE,
+        -lastmod    => 1,
+        -page_param => {"keywords"              => N_("log out")});
+
+main;
+exit 0;
+
+sub main() {
+    local ($_, %_);
+    my ($error, $success, $processor);
+    
+    # If the request is a GET query
+    if ($ENV{"REQUEST_METHOD"} ne "POST") {
+        $error = check_get;
+        # If an error occurs
+        if (defined $error) {
+            html_page $error;
+        
+        # Display the page
+        } else {
+            html_page retrieve_status;
+        }
+    
+    # If a form was POSTed from the client
+    } else {
+        $error = check_post;
+        # If an error occurs
+        if (defined $error) {
+            error_redirect $error;
+        
+        # Else, save the data
+        } else {
+            $processor = new Selima::Processor::LogOut($POST);
+            $success = $processor->process;
+            success_redirect $success;
+        }
+    }
+    return;
+}
+
+# check_get: Check the GET arguments
+sub check_get() {
+    local ($_, %_);
+    my $status;
+    # There is a result to display
+    $status = retrieve_status;
+    # Successfully logged out
+    if (    defined $status
+            && exists $$status{"status"}
+            && $$status{"status"} eq "success") {
+        # Nothing to check
+        return;
+    }
+    # Check if this user has logged in
+    unauth unless defined get_login_sn;
+    # OK
+    return;
+}
+
+# check_post: Check the POSTed form
+sub check_post() {
+    local ($_, %_);
+    # Check if this user has logged in
+    unauth unless defined get_login_sn;
+    # OK
+    return;
+}
+
+# html_page: Display the page
+sub html_page($) {
+    local ($_, %_);
+    my $status;
+    $status = $_[0];
+    # Not logged out yet
+    if (defined get_login_sn) {
+        html_header __("Log Out");
+        html_errmsg $status;
+        html_logoutform;
+        html_footer;
+    
+    # Logged out
+    } else {
+        html_header __("Log Out");
+        html_errmsg $status;
+        html_relogin;
+        html_footer;
+    }
+    return;
+}
+
+
+##################################
+# Subroutines to manage the data #
+##################################
+# html_logoutform: Display a form to log out
+sub html_logoutform() {
+    local ($_, %_);
+    my ($msg, $submit);
+    $msg = h(__("Are you sure you want to log out?"));
+    $submit = h(__("Log out"));
+    print << "EOT";
+<form action="$REQUEST_FILE" method="post">
+<div>
+<p>$msg</p>
+<input type="submit" value="$submit" />
+</div>
+</form>
+
+EOT
+    return;
+}
+
+# html_relogin: Display links to log in again
+sub html_relogin() {
+    local ($_, %_);
+    $_ = h(__("Log in again."));
+    print << "EOT";
+<p><a href="/magicat/cgi-bin/login.cgi">$_</a></p>
+
+EOT
+    return;
+}