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# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (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.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bugzilla Bug Tracking System.
#
# The Initial Developer of the Original Code is Netscape Communications
# Corporation. Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s): Myk Melez <myk@mozilla.org>
################################################################################
# Module Initialization
################################################################################
# Make it harder for us to do dangerous things in Perl.
use diagnostics;
use strict;
# Bundle the functions in this file together into the "Token" package.
package Token;
# This module requires that its caller have said "require CGI.pl" to import
# relevant functions from that script and its companion globals.pl.
################################################################################
# Functions
################################################################################
sub IssuePasswordToken {
# Generates a random token, adds it to the tokens table, and sends it
# to the user with instructions for using it to change their password.
my ($loginname) = @_;
# Retrieve the user's ID from the database.
my $quotedloginname = &::SqlQuote($loginname);
&::SendSQL("SELECT userid FROM profiles WHERE login_name = $quotedloginname");
my ($userid) = &::FetchSQLData();
# Generate a unique token and insert it into the tokens table.
# We have to lock the tokens table before generating the token,
# since the database must be queried for token uniqueness.
&::SendSQL("LOCK TABLES tokens WRITE");
my $token = GenerateUniqueToken();
my $quotedtoken = &::SqlQuote($token);
my $quotedipaddr = &::SqlQuote($::ENV{'REMOTE_ADDR'});
&::SendSQL("INSERT INTO tokens ( userid , issuedate , token , tokentype , eventdata )
VALUES ( $userid , NOW() , $quotedtoken , 'password' , $quotedipaddr )");
&::SendSQL("UNLOCK TABLES");
# Mail the user the token along with instructions for using it.
MailPasswordToken($loginname, $token);
}
sub GenerateUniqueToken {
# Generates a unique random token. Uses &GenerateRandomPassword
# for the tokens themselves and checks uniqueness by searching for
# the token in the "tokens" table. Gives up if it can't come up
# with a token after about one hundred tries.
my $token;
my $duplicate = 1;
my $tries = 0;
while ($duplicate) {
++$tries;
if ($tries > 100) {
&::DisplayError("Something is seriously wrong with the token generation system.");
exit;
}
$token = &::GenerateRandomPassword();
&::SendSQL("SELECT userid FROM tokens WHERE token = " . &::SqlQuote($token));
$duplicate = &::FetchSQLData();
}
return $token;
}
sub MailPasswordToken {
# Emails a password token to a user along with instructions for its use.
# Called exclusively from &IssuePasswordToken.
my ($emailaddress, $token) = @_;
my $urlbase = &::Param("urlbase");
my $emailsuffix = &::Param('emailsuffix');
$token = &::url_quote($token);
open SENDMAIL, "|/usr/lib/sendmail -t";
print SENDMAIL qq|From: bugzilla-daemon
To: $emailaddress$emailsuffix
Subject: Bugzilla Change Password Request
You or someone impersonating you has requested to change your Bugzilla
password. To change your password, visit the following link:
${urlbase}token.cgi?a=cfmpw&t=$token
If you are not the person who made this request, or you wish to cancel
this request, visit the following link:
${urlbase}token.cgi?a=cxlpw&t=$token
|;
close SENDMAIL;
}
sub Cancel {
# Cancels a previously issued token and notifies the system administrator.
# This should only happen when the user accidentally makes a token request
# or when a malicious hacker makes a token request on behalf of a user.
my ($token, $cancelaction) = @_;
# Quote the token for inclusion in SQL statements.
my $quotedtoken = &::SqlQuote($token);
# Get information about the token being cancelled.
&::SendSQL("SELECT issuedate , tokentype , eventdata , login_name , realname
FROM tokens, profiles
WHERE tokens.userid = profiles.userid
AND token = $quotedtoken");
my ($issuedate, $tokentype, $eventdata, $loginname, $realname) = &::FetchSQLData();
# Get the email address of the Bugzilla maintainer.
my $maintainer = &::Param('maintainer');
# Format the user's real name and email address into a single string.
my $username = $realname ? $realname . " <" . $loginname . ">" : $loginname;
# Notify the user via email about the cancellation.
open SENDMAIL, "|/usr/lib/sendmail -t";
print SENDMAIL qq|From: bugzilla-daemon
To: $username
Subject: "$tokentype" token cancelled
A token was cancelled from $::ENV{'REMOTE_ADDR'}. This is either
an honest mistake or the result of a malicious hack attempt.
Take a look at the information below and forward this email
to $maintainer if you suspect foul play.
Token: $token
Token Type: $tokentype
User: $username
Issue Date: $issuedate
Event Data: $eventdata
Cancelled Because: $cancelaction
|;
close SENDMAIL;
# Delete the token from the database.
&::SendSQL("LOCK TABLES tokens WRITE");
&::SendSQL("DELETE FROM tokens WHERE token = $quotedtoken");
&::SendSQL("UNLOCK TABLES");
}
sub HasPasswordToken {
# Returns a password token if the user has one. Otherwise returns 0 (false).
my ($userid) = @_;
&::SendSQL("SELECT token FROM tokens WHERE userid = $userid LIMIT 1");
my ($token) = &::FetchSQLData();
return $token;
}
1;
|
