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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 strict;
# Bundle the functions in this file together into the "Bugzilla::Token" package.
package Bugzilla::Token;
use Bugzilla::Config;
use Bugzilla::Error;
use Bugzilla::BugMail;
use Bugzilla::Util;
use Date::Format;
use Date::Parse;
# This module requires that its caller have said "require globals.pl" to import
# relevant functions from that script.
################################################################################
# Constants
################################################################################
# The maximum number of days a token will remain valid.
my $maxtokenage = 3;
################################################################################
# Public Functions
################################################################################
sub IssueEmailChangeToken {
my ($userid, $old_email, $new_email) = @_;
my ($token, $token_ts) = _create_token($userid, 'emailold', $old_email . ":" . $new_email);
my $newtoken = _create_token($userid, 'emailnew', $old_email . ":" . $new_email);
# Mail the user the token along with instructions for using it.
my $template = Bugzilla->template;
my $vars = {};
$vars->{'oldemailaddress'} = $old_email . Param('emailsuffix');
$vars->{'newemailaddress'} = $new_email . Param('emailsuffix');
$vars->{'max_token_age'} = $maxtokenage;
$vars->{'token_ts'} = $token_ts;
$vars->{'token'} = $token;
$vars->{'emailaddress'} = $old_email . Param('emailsuffix');
my $message;
$template->process("account/email/change-old.txt.tmpl", $vars, \$message)
|| ThrowTemplateError($template->error());
Bugzilla::BugMail::MessageToMTA($message);
$vars->{'token'} = $newtoken;
$vars->{'emailaddress'} = $new_email . Param('emailsuffix');
$message = "";
$template->process("account/email/change-new.txt.tmpl", $vars, \$message)
|| ThrowTemplateError($template->error());
Bugzilla::BugMail::MessageToMTA($message);
}
sub IssuePasswordToken {
# Generates a random token, adds it to the tokens table, and sends it
# to the user with instructions for using it to change their password.
my ($loginname) = @_;
my $dbh = Bugzilla->dbh;
# Retrieve the user's ID from the database.
my $quotedloginname = &::SqlQuote($loginname);
&::SendSQL("SELECT profiles.userid, tokens.issuedate FROM profiles
LEFT JOIN tokens
ON tokens.userid = profiles.userid
AND tokens.tokentype = 'password'
AND tokens.issuedate > NOW() - " .
$dbh->sql_interval(10, 'MINUTE') . "
WHERE " . $dbh->sql_istrcmp('login_name', $quotedloginname));
my ($userid, $toosoon) = &::FetchSQLData();
if ($toosoon) {
ThrowUserError('too_soon_for_new_token');
};
my ($token, $token_ts) = _create_token($userid, 'password', $::ENV{'REMOTE_ADDR'});
# Mail the user the token along with instructions for using it.
my $template = Bugzilla->template;
my $vars = {};
$vars->{'token'} = $token;
$vars->{'emailaddress'} = $loginname . Param('emailsuffix');
$vars->{'max_token_age'} = $maxtokenage;
$vars->{'token_ts'} = $token_ts;
my $message = "";
$template->process("account/password/forgotten-password.txt.tmpl",
$vars, \$message)
|| ThrowTemplateError($template->error());
Bugzilla::BugMail::MessageToMTA($message);
}
sub IssueSessionToken {
# Generates a random token, adds it to the tokens table, and returns
# the token to the caller.
my $data = shift;
return _create_token(Bugzilla->user->id, 'session', $data);
}
sub CleanTokenTable {
my $dbh = Bugzilla->dbh;
$dbh->bz_lock_tables('tokens WRITE');
&::SendSQL("DELETE FROM tokens WHERE " .
$dbh->sql_to_days('NOW()') . " - " .
$dbh->sql_to_days('issuedate') . " >= " . $maxtokenage);
$dbh->bz_unlock_tables();
}
sub GenerateUniqueToken {
# Generates a unique random token. Uses generate_random_password
# 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;
my $dbh = Bugzilla->dbh;
my $sth = $dbh->prepare("SELECT userid FROM tokens WHERE token = ?");
while ($duplicate) {
++$tries;
if ($tries > 100) {
ThrowCodeError("token_generation_error");
}
$token = generate_random_password();
$sth->execute($token);
$duplicate = $sth->fetchrow_array;
}
return $token;
}
sub Cancel {
# Cancels a previously issued token and notifies the system administrator.
# This should only happen when the user accidentally makes a token request
# or when a malicious hacker makes a token request on behalf of a user.
my ($token, $cancelaction, $vars) = @_;
my $dbh = Bugzilla->dbh;
$vars ||= {};
# Quote the token for inclusion in SQL statements.
my $quotedtoken = &::SqlQuote($token);
# Get information about the token being cancelled.
&::SendSQL("SELECT " . $dbh->sql_date_format('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');
my $template = Bugzilla->template;
$vars->{'emailaddress'} = $loginname . Param('emailsuffix');
$vars->{'maintainer'} = $maintainer;
$vars->{'remoteaddress'} = $::ENV{'REMOTE_ADDR'};
$vars->{'token'} = $token;
$vars->{'tokentype'} = $tokentype;
$vars->{'issuedate'} = $issuedate;
$vars->{'eventdata'} = $eventdata;
$vars->{'cancelaction'} = $cancelaction;
# Notify the user via email about the cancellation.
my $message;
$template->process("account/cancel-token.txt.tmpl", $vars, \$message)
|| ThrowTemplateError($template->error());
Bugzilla::BugMail::MessageToMTA($message);
# Delete the token from the database.
DeleteToken($token);
}
sub DeletePasswordTokens {
my ($userid, $reason) = @_;
my $dbh = Bugzilla->dbh;
my $sth = $dbh->prepare("SELECT token " .
"FROM tokens " .
"WHERE userid=? AND tokentype='password'");
$sth->execute($userid);
while (my $token = $sth->fetchrow_array) {
Bugzilla::Token::Cancel($token, $reason);
}
}
sub HasEmailChangeToken {
# Returns an email change token if the user has one.
my ($userid) = @_;
my $dbh = Bugzilla->dbh;
&::SendSQL("SELECT token FROM tokens WHERE userid = $userid " .
"AND (tokentype = 'emailnew' OR tokentype = 'emailold') " .
$dbh->sql_limit(1));
my ($token) = &::FetchSQLData();
return $token;
}
sub GetTokenData {
# Returns the userid, issuedate and eventdata for the specified token
my ($token) = @_;
return unless defined $token;
trick_taint($token);
my $dbh = Bugzilla->dbh;
return $dbh->selectrow_array(
"SELECT userid, " . $dbh->sql_date_format('issuedate') . ", eventdata
FROM tokens
WHERE token = ?", undef, $token);
}
sub DeleteToken {
# Deletes specified token
my ($token) = @_;
return unless defined $token;
trick_taint($token);
my $dbh = Bugzilla->dbh;
$dbh->bz_lock_tables('tokens WRITE');
$dbh->do("DELETE FROM tokens WHERE token = ?", undef, $token);
$dbh->bz_unlock_tables();
}
################################################################################
# Internal Functions
################################################################################
sub _create_token {
# Generates a unique token and inserts it into the database
# Returns the token and the token timestamp
my ($userid, $tokentype, $eventdata) = @_;
detaint_natural($userid);
trick_taint($tokentype);
trick_taint($eventdata);
my $dbh = Bugzilla->dbh;
$dbh->bz_lock_tables('tokens WRITE');
my $token = GenerateUniqueToken();
$dbh->do("INSERT INTO tokens (userid, issuedate, token, tokentype, eventdata)
VALUES (?, NOW(), ?, ?, ?)", undef, ($userid, $token, $tokentype, $eventdata));
$dbh->bz_unlock_tables();
if (wantarray) {
my (undef, $token_ts, undef) = GetTokenData($token);
$token_ts = str2time($token_ts);
return ($token, $token_ts);
} else {
return $token;
}
}
1;
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