Annotation of loncom/interface/resetpw.pm, revision 1.22.2.2
1.1 raeburn 1: # The LearningOnline Network
2: # Allow access to password changing via a token sent to user's e-mail.
3: #
1.22.2.2! raeburn 4: # $Id: resetpw.pm,v 1.22.2.1 2009/12/07 03:53:17 raeburn Exp $
1.14 bisitz 5: #
1.1 raeburn 6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: #
1.21 raeburn 29:
30: =pod
31:
32: =head1 NAME
33:
1.22 raeburn 34: Apache::resetpw: reset user password.
1.21 raeburn 35:
36: =head1 SYNOPSIS
37:
38: Handles resetting of forgotten passwords.
39:
40: This is part of the LearningOnline Network with CAPA project
41: described at http://www.lon-capa.org.
42:
43: =head1 OVERVIEW
44:
45: A user with an e-mail address associated with his/her LON-CAPA username
1.22 raeburn 46: can reset a forgotten password, using a link sent to the e-mail address
1.21 raeburn 47: if the authentication type for the account is "internal".
48:
49: =cut
50:
1.1 raeburn 51: package Apache::resetpw;
52:
53: use strict;
54: use Apache::Constants qw(:common);
55: use Apache::lonacc;
56: use Apache::lonnet;
57: use Apache::loncommon;
58: use Apache::lonlocal;
59: use LONCAPA;
60:
61: sub handler {
62: my $r = shift;
63: &Apache::loncommon::content_type($r,'text/html');
64: $r->send_http_header;
65: if ($r->header_only) {
66: return OK;
67: }
68: my $contact_name = &mt('LON-CAPA helpdesk');
69: my $contact_email = $r->dir_config('lonSupportEMail');
70: my $server = $r->dir_config('lonHostID');
1.19 raeburn 71: my $defdom = &Apache::lonnet::default_login_domain();
1.1 raeburn 72: &Apache::lonacc::get_posted_cgi($r);
73: &Apache::lonlocal::get_language_handle($r);
74: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['token']);
75:
76: my @emailtypes = ('permanentemail','critnotification','notification');
1.2 albertel 77: my $uname = &unescape($env{'form.uname'});
1.22.2.2! raeburn 78: my $useremail = $env{'form.useremail'};
1.1 raeburn 79: my $udom = $env{'form.udom'};
80: my $token = $env{'form.token'};
1.22.2.2! raeburn 81: my $case_change;
1.10 raeburn 82: my $start_page =
83: &Apache::loncommon::start_page('Reset password','',
84: {
85: 'no_inline_link' => 1,});
86: $r->print($start_page);
1.11 bisitz 87: $r->print('<h3>'.&mt('Reset forgotten LON-CAPA password').'</h3>');
1.1 raeburn 88: my $output;
89: if ($token) {
90: $output = &reset_passwd($r,$token,$contact_name,$contact_email);
91: } elsif ($uname && $udom) {
1.6 albertel 92: my $domdesc = &Apache::lonnet::domain($udom,'description');
1.22.2.2! raeburn 93: my $homeserver = &Apache::lonnet::homeserver($uname,$udom);
! 94: if ($homeserver eq 'no_host') {
! 95: my $lc_uname = lc($uname);
! 96: if ($lc_uname ne $uname) {
! 97: $homeserver = &Apache::lonnet::homeserver($lc_uname,$udom);
! 98: unless ($homeserver eq 'no_host') {
! 99: $uname = $lc_uname;
! 100: $useremail = lc($env{'form.useremail'});
! 101: $case_change = 1;
! 102: }
! 103: }
! 104: }
1.1 raeburn 105: my $authtype = &Apache::lonnet::queryauthenticate($uname,$udom);
106: if ($authtype =~ /^internal/) {
1.3 raeburn 107: if ($useremail !~ /^[^\@]+\@[^\@]+\.[^\@\.]+$/) {
108: $output = &invalid_state('baduseremail',$domdesc,
109: $contact_name,$contact_email);
110: } else {
111: my %userinfo =
1.4 albertel 112: &Apache::lonnet::get('environment',\@emailtypes,
113: $udom,$uname);
1.18 raeburn 114: my @allemails;
1.3 raeburn 115: foreach my $type (@emailtypes) {
1.18 raeburn 116: my $email = $userinfo{$type};
117: my @items;
118: if ($email =~ /,/) {
119: @items = split(',',$userinfo{$type});
120: } else {
121: @items = ($email);
122: }
123: foreach my $item (@items) {
124: if ($item =~ /^[^\@]+\@[^\@]+\.[^\@\.]+$/) {
1.22.2.2! raeburn 125: if ($case_change) {
! 126: my $lcitem = lc($item);
! 127: unless(grep(/^\Q$lcitem\E$/,@allemails)) {
! 128: push(@allemails,$lcitem);
! 129: }
! 130: } else {
! 131: unless(grep(/^\Q$item\E$/,@allemails)) {
! 132: push(@allemails,$item);
! 133: }
1.18 raeburn 134: }
135: }
1.3 raeburn 136: }
137: }
1.18 raeburn 138: if (@allemails > 0) {
139: if (grep(/^\Q$useremail\E$/,@allemails)) {
140: $output = &send_token($uname,$udom,$useremail,$server,
1.3 raeburn 141: $domdesc,$contact_name,
142: $contact_email);
143: } else {
144: $output = &invalid_state('mismatch',$domdesc,
145: $contact_name,
146: $contact_email);
147: }
148: } else {
149: $output = &invalid_state('missing',$domdesc,
150: $contact_name,$contact_email);
1.1 raeburn 151: }
152: }
153: } elsif ($authtype =~ /^(krb|unix|local)/) {
154: $output = &invalid_state('authentication',$domdesc,
155: $contact_name,$contact_email);
156: } else {
157: $output = &invalid_state('invalid',$domdesc,
158: $contact_name,$contact_email);
159: }
160: } else {
161: $output = &get_uname($defdom);
162: }
163: $r->print($output);
164: $r->print(&Apache::loncommon::end_page());
165: return OK;
166: }
167:
168: sub get_uname {
169: my ($defdom) = @_;
170: my %lt = &Apache::lonlocal::texthash(
1.22.2.1 raeburn 171: unam => 'LON-CAPA username',
172: udom => 'LON-CAPA domain',
1.12 schafran 173: uemail => 'E-mail address in LON-CAPA',
1.1 raeburn 174: proc => 'Proceed');
175:
1.22.2.2! raeburn 176: my $msg = '<br />'.&mt('To be able to reset a forgotten password:')
1.8 bisitz 177: .'<ul><li>'.&mt('An e-mail address must have previously been associated with your LON-CAPA username.').'</li>'
1.22.2.2! raeburn 178: .'<li>'.&mt('You must be able to access e-mail sent to the e-mail address associated with your WebCenter account.').'</li></ul><br />'
! 179: .&mt('In most cases the GCI WebCenter username is the same as your e-mail address, in which case you will enter the same information twice. ').'<br />';
! 180: $msg .= '
1.1 raeburn 181: <form name="forgotpw" method="post">
182: <table>
1.22.2.2! raeburn 183: <tr>
! 184: <td align="left">'.$lt{'unam'}.':</td>
! 185: <td><input type="text" name="uname" size="30" />
! 186: <input type="hidden" name="udom" value="'.$defdom.'" /></td>
! 187: </tr>
! 188: <tr>
! 189: <td align="left">'.$lt{'uemail'}.':</td>
! 190: <td><input type="text" name="useremail" size="30" /></td>
! 191: </tr>
! 192: <tr><td colspan="2" align="left"><br />
! 193: <input type="submit" value="'.$lt{'proc'}.'" /></td>
! 194: </tr>
1.1 raeburn 195: </table>
1.22.2.2! raeburn 196: </form>'."\n";
1.1 raeburn 197: return $msg;
198: }
199:
200: sub send_token {
201: my ($uname,$udom,$email,$server,$domdesc,$contact_name,
202: $contact_email) = @_;
1.11 bisitz 203: my $msg = &mt('Thank you for your request to reset the password for your LON-CAPA account.').'<br /><br />';
1.1 raeburn 204:
205: my $now = time;
206: my $temppasswd = &create_passwd();
1.2 albertel 207: my %info = ('ip' => $ENV{'REMOTE_ADDR'},
208: 'time' => $now,
209: 'domain' => $udom,
210: 'username' => $uname,
211: 'email' => $email,
212: 'temppasswd' => $temppasswd);
1.1 raeburn 213:
1.3 raeburn 214: my $token = &Apache::lonnet::tmpput(\%info,$server,'resetpw');
215: if ($token !~ /^error/ && $token ne 'no_such_host') {
1.2 albertel 216: my $esc_token = &escape($token);
1.15 raeburn 217: my $showtime = &Apache::lonlocal::locallocaltime(time);
218: my $reseturl = &Apache::lonnet::absolute_url().'/adm/resetpw?token='.$esc_token;
219: my $mailmsg = &mt('A request was submitted on [_1] for reset of the password for your LON-CAPA account.',$showtime).' '.&mt('To complete this process please open a web browser and enter the following URL in the address/location box: [_1]',$reseturl);
1.1 raeburn 220: my $result = &send_mail($domdesc,$email,$mailmsg,$contact_name,
221: $contact_email);
222: if ($result eq 'ok') {
1.22.2.2! raeburn 223: $msg .= &mt('An e-mail sent to the e-mail address associated with your LON-CAPA account includes the web address for the link you should use to complete the reset process.').'<br /><br />'.&mt('The link included in the message will be valid for the next [_1]two[_2] hours.','<b>','</b>');
1.1 raeburn 224: } else {
1.22.2.2! raeburn 225: $msg .= &mt('An error occurred when sending a message to the e-mail address associated with your LON-CAPA account. Please contact the [_1] ([_2]) for assistance.',$contact_name,$contact_email);
1.1 raeburn 226: }
227: } else {
1.22.2.2! raeburn 228: $msg .= &mt('An error occurred creating a token required for the password reset process. Please contact the [_1] ([_2]) for assistance.',$contact_name,$contact_email);
1.1 raeburn 229: }
230: return $msg;
231: }
232:
233: sub send_mail {
234: my ($domdesc,$email,$mailmsg,$contact_name,$contact_email) = @_;
235: my $outcome;
236: my $requestmail = "To: $email\n".
237: "From: $contact_name <$contact_email>\n".
238: "Subject: ".&mt('Your LON-CAPA account')."\n".
239: "\n\n".$mailmsg."\n\n".
240: &mt('[_1] LON-CAPA support team',$domdesc)."\n".
241: "$contact_email\n";
242: if (open(MAIL, "|/usr/lib/sendmail -oi -t -odb")) {
243: print MAIL $requestmail;
244: close(MAIL);
245: $outcome = 'ok';
246: } else {
247: $outcome = 'fail';
248: }
249: return $outcome;
250: }
251:
252: sub invalid_state {
253: my ($error,$domdesc,$contact_name,$contact_email) = @_;
254: my $msg;
255: if ($error eq 'invalid') {
1.8 bisitz 256: $msg = &mt('The username you provided was not verified as a valid username in the LON-CAPA system for the [_1] domain.',$domdesc)
257: .' '.&mt('Please [_1]go back[_2] and try again.','<a href="javascript:history.go(-1)"><u>','</u></a>');
1.1 raeburn 258: } else {
1.3 raeburn 259: if ($error eq 'baduseremail') {
260: $msg = &mt('The e-mail address you provided does not appear to be a valid address.');
261: } elsif ($error eq 'mismatch') {
262: $msg = &mt('The e-mail address you provided does not match the address recorded in the LON-CAPA system for the username and domain you provided.');
263: } elsif ($error eq 'missing') {
1.1 raeburn 264: $msg = &mt('A valid e-mail address was not located in the LON-CAPA system for the username and domain you provided.');
265: } elsif ($error eq 'authentication') {
266: $msg = &mt('The username you provided uses an authentication type which can not be reset directly via LON-CAPA.');
267: }
268: if ($contact_email ne '') {
269: my $escuri = &HTML::Entities::encode('/adm/resetpw','&<>"');
1.8 bisitz 270: $msg .= '<br /> '.&mt('You may wish to contact the [_1]LON-CAPA helpdesk[_2] for the [_3] domain.'
271: ,'<a href="/adm/helpdesk?origurl='.$escuri.'">','</a>',$domdesc);
1.1 raeburn 272: } else {
1.8 bisitz 273: $msg .= '<br /> '.&mt('You may wish to send an e-mail to the server administrator: [_1] for the [_2] domain.',$Apache::lonnet::perlvar{'AdminEmail'},$domdesc);
1.1 raeburn 274: }
275: }
276: return $msg;
277: }
278:
279: sub reset_passwd {
280: my ($r,$token,$contact_name,$contact_email) = @_;
281: my $msg;
282: my %data = &Apache::lonnet::tmpget($token);
283: my $now = time;
284: if (keys(%data) == 0) {
1.17 bisitz 285: $msg = &mt('Sorry, the URL you provided to complete the reset of your password was invalid. Either the token included in the URL has been deleted or the URL you provided was invalid. Please submit a [_1]new request[_2] for a password reset, and follow the link to the new URL included in the e-mail that will be sent to you, to allow you to enter a new password.'
286: ,'<a href="/adm/resetpw">','</a>');
1.1 raeburn 287: return $msg;
288: }
289: if (($data{'time'} =~ /^\d+$/) &&
290: ($data{'username'} ne '') &&
291: ($data{'domain'} ne '') &&
1.3 raeburn 292: ($data{'email'} =~ /^[^\@]+\@[^\@]+\.[^\@\.]+$/) &&
1.1 raeburn 293: ($data{'temppasswd'} =~/^\w+$/)) {
1.9 raeburn 294: my $reqtime = &Apache::lonlocal::locallocaltime($data{'time'});
1.1 raeburn 295: if ($now - $data{'time'} < 7200) {
296: if ($env{'form.action'} eq 'verify_and_change_pass') {
1.22.2.2! raeburn 297: my $homeserver = &Apache::lonnet::homeserver($env{'form.uname'},$env{'form.udom'});
! 298: if ($homeserver eq 'no_host') {
! 299: my $lc_uname = lc($env{'form.uname'});
! 300: if ($lc_uname ne $env{'form.uname'}) {
! 301: $homeserver = &Apache::lonnet::homeserver($lc_uname,$env{'form.udom'});
! 302: unless ($homeserver eq 'no_host') {
! 303: if ($env{'form.uname'} eq $env{'form.email'}) {
! 304: $env{'form.email'} = $lc_uname;
! 305: }
! 306: $env{'form.uname'} = $lc_uname;
! 307: }
! 308: }
! 309: }
1.22 raeburn 310: unless (($env{'form.uname'} eq $data{'username'}) && ($env{'form.udom'} eq $data{'domain'}) && ($env{'form.email'} eq $data{'email'})) {
311: $msg = &generic_failure_msg($contact_name,$contact_email);
312: return $msg;
313: }
1.1 raeburn 314: my $change_failed =
1.2 albertel 315: &Apache::lonpreferences::verify_and_change_password($r,'reset_by_email',$token);
1.1 raeburn 316: if (!$change_failed) {
317: my $delete = &Apache::lonnet::tmpdel($token);
1.9 raeburn 318: my $now = &Apache::lonlocal::locallocaltime(time);
1.1 raeburn 319: my $domdesc =
1.6 albertel 320: &Apache::lonnet::domain($data{'domain'},'description');
1.1 raeburn 321: my $mailmsg = &mt('The password for your LON-CAPA account in the [_1] domain was changed [_2] from IP address: [_3]. If you did not perform this change or authorize it, please contact the [_4] ([_5]).',$domdesc,$now,$ENV{'REMOTE_ADDR'},$contact_name,$contact_email)."\n";
322: my $result = &send_mail($domdesc,$data{'email'},$mailmsg,
323: $contact_name,$contact_email);
324: if ($result eq 'ok') {
325: $msg .= &mt('An e-mail confirming setting of the password for your LON-CAPA account has been sent to [_1].',$data{'email'});
326: } else {
327: $msg .= &mt('An error occurred when sending e-mail to [_1] confirming setting of your new password.',$data{'email'});
328: }
1.17 bisitz 329: $msg .= '<br /><br />'
330: .'<a href="/adm/login">'.&mt('Go to the login page').'</a>.';
1.20 raeburn 331: } elsif ($change_failed eq 'invalid_client') {
332: my $homeserver = &Apache::lonnet::homeserver($data{'username'},$data{'domain'});
333: if ($homeserver eq 'no_host') {
334: $msg .= &generic_failure_msg($contact_name,$contact_email);
335: } else {
336: my $protocol = $Apache::lonnet::protocol{$homeserver};
337: $protocol = 'http' if ($protocol ne 'https');
338: my $url = $protocol.'://'.&Apache::lonnet::hostname($homeserver).
339: '/adm/resetpw';
340: my ($opentag,$closetag);
341: if ($url) {
342: $opentag = '<a href="'.$url.'">';
343: $closetag = '</a>';
344: }
345: $msg .= &mt('A problem occurred when attempting to reset the password for your account. Please try again from your [_1]home server[_2].',$opentag,$closetag);
346: }
1.1 raeburn 347: } else {
1.20 raeburn 348: $msg .= &generic_failure_msg($contact_name,$contact_email);
1.1 raeburn 349: }
350: } else {
1.22.2.2! raeburn 351: $r->print(&mt('The token included in an e-mail sent to you [_1] has been verified, so you may now proceed to reset the password for your LON-CAPA account.',$reqtime).'<br />'.
! 352: '<p>'.&mt('Please enter the username and domain of the LON-CAPA account, and the associated e-mail address, for which you are setting a password.').'<br />'.
! 353: &mt('In most cases the GCI WebCenter username is the same as your e-mail address, in which case you will enter the same information twice.').'</p>'.
! 354: '<p>'.&mt('The new password must contain at least 7 characters.').' '.
! 355: &mt('Your new password will be sent to the LON-CAPA server in an encrypted form.').'<br /></p>');
1.1 raeburn 356: &Apache::lonpreferences::passwordchanger($r,'','reset_by_email',$token);
357: }
358: } else {
1.17 bisitz 359: $msg = &mt('Sorry, the token generated when you requested a password reset has expired. Please submit a [_1]new request[_2], and follow the link to the web page included in the new e-mail that will be sent to you, to allow you to enter a new password.'
360: ,'<a href="/adm/resetpw">','</a>');
1.1 raeburn 361: }
362: } else {
1.17 bisitz 363: $msg .= &mt('Sorry, the URL generated when you requested reset of your password contained incomplete information. Please submit a [_1]new request[_2] for a password reset, and use the new URL that will be sent to your e-mail account to complete the process.'
364: ,'<a href="/adm/resetpw">','</a>');
1.1 raeburn 365: }
366: return $msg;
367: }
368:
1.20 raeburn 369: sub generic_failure_msg {
370: my ($contact_name,$contact_email) = @_;
371: return &mt('A problem occurred when attempting to reset the password for your account. Please contact the [_1] - ([_2]) for assistance.',
372: $contact_name,'<a href="mailto:'.$contact_email.'">'.$contact_email.'</a>');
373: }
374:
1.1 raeburn 375: sub create_passwd {
376: my $passwd = '';
1.2 albertel 377: my @letts = ("a".."z");
1.1 raeburn 378: for (my $i=0; $i<8; $i++) {
1.2 albertel 379: my $lettnum = int(rand(2));
1.1 raeburn 380: my $item = '';
381: if ($lettnum) {
1.2 albertel 382: $item = $letts[int(rand(26))];
383: my $uppercase = int(rand(2));
1.1 raeburn 384: if ($uppercase) {
385: $item =~ tr/a-z/A-Z/;
386: }
387: } else {
1.2 albertel 388: $item = int(rand(10));
1.1 raeburn 389: }
390: $passwd .= $item;
391: }
392: return ($passwd);
393: }
394:
395: 1;
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