Annotation of loncom/interface/resetpw.pm, revision 1.19
1.1 raeburn 1: # The LearningOnline Network
2: # Allow access to password changing via a token sent to user's e-mail.
3: #
1.19 ! raeburn 4: # $Id: resetpw.pm,v 1.18 2009/09/30 21:47:07 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: #
29: package Apache::resetpw;
30:
31: use strict;
32: use Apache::Constants qw(:common);
33: use Apache::lonacc;
34: use Apache::lonnet;
35: use Apache::loncommon;
36: use Apache::lonlocal;
37: use LONCAPA;
38:
39: sub handler {
40: my $r = shift;
41: &Apache::loncommon::content_type($r,'text/html');
42: $r->send_http_header;
43: if ($r->header_only) {
44: return OK;
45: }
46: my $contact_name = &mt('LON-CAPA helpdesk');
47: my $contact_email = $r->dir_config('lonSupportEMail');
48: my $server = $r->dir_config('lonHostID');
1.19 ! raeburn 49: my $defdom = &Apache::lonnet::default_login_domain();
1.1 raeburn 50: &Apache::lonacc::get_posted_cgi($r);
51: &Apache::lonlocal::get_language_handle($r);
52: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['token']);
53:
54: my @emailtypes = ('permanentemail','critnotification','notification');
1.2 albertel 55: my $uname = &unescape($env{'form.uname'});
1.1 raeburn 56: my $udom = $env{'form.udom'};
57: my $token = $env{'form.token'};
1.10 raeburn 58: my $start_page =
59: &Apache::loncommon::start_page('Reset password','',
60: {
61: 'no_inline_link' => 1,});
62: $r->print($start_page);
1.11 bisitz 63: $r->print('<h3>'.&mt('Reset forgotten LON-CAPA password').'</h3>');
1.1 raeburn 64: my $output;
65: if ($token) {
66: $output = &reset_passwd($r,$token,$contact_name,$contact_email);
67: } elsif ($uname && $udom) {
1.6 albertel 68: my $domdesc = &Apache::lonnet::domain($udom,'description');
1.1 raeburn 69: my $authtype = &Apache::lonnet::queryauthenticate($uname,$udom);
70: if ($authtype =~ /^internal/) {
1.3 raeburn 71: my $useremail = $env{'form.useremail'};
72: if ($useremail !~ /^[^\@]+\@[^\@]+\.[^\@\.]+$/) {
73: $output = &invalid_state('baduseremail',$domdesc,
74: $contact_name,$contact_email);
75: } else {
76: my %userinfo =
1.4 albertel 77: &Apache::lonnet::get('environment',\@emailtypes,
78: $udom,$uname);
1.18 raeburn 79: my @allemails;
1.3 raeburn 80: foreach my $type (@emailtypes) {
1.18 raeburn 81: my $email = $userinfo{$type};
82: my @items;
83: if ($email =~ /,/) {
84: @items = split(',',$userinfo{$type});
85: } else {
86: @items = ($email);
87: }
88: foreach my $item (@items) {
89: if ($item =~ /^[^\@]+\@[^\@]+\.[^\@\.]+$/) {
90: unless(grep(/^\Q$item\E$/,@allemails)) {
91: push(@allemails,$item);
92: }
93: }
1.3 raeburn 94: }
95: }
1.18 raeburn 96: if (@allemails > 0) {
97: if (grep(/^\Q$useremail\E$/,@allemails)) {
98: $output = &send_token($uname,$udom,$useremail,$server,
1.3 raeburn 99: $domdesc,$contact_name,
100: $contact_email);
101: } else {
102: $output = &invalid_state('mismatch',$domdesc,
103: $contact_name,
104: $contact_email);
105: }
106: } else {
107: $output = &invalid_state('missing',$domdesc,
108: $contact_name,$contact_email);
1.1 raeburn 109: }
110: }
111: } elsif ($authtype =~ /^(krb|unix|local)/) {
112: $output = &invalid_state('authentication',$domdesc,
113: $contact_name,$contact_email);
114: } else {
115: $output = &invalid_state('invalid',$domdesc,
116: $contact_name,$contact_email);
117: }
118: } else {
119: $output = &get_uname($defdom);
120: }
121: $r->print($output);
122: $r->print(&Apache::loncommon::end_page());
123: return OK;
124: }
125:
126: sub get_uname {
127: my ($defdom) = @_;
128: my %lt = &Apache::lonlocal::texthash(
129: unam => 'username',
130: udom => 'domain',
1.12 schafran 131: uemail => 'E-mail address in LON-CAPA',
1.1 raeburn 132: proc => 'Proceed');
133:
134: my $msg = &mt('If you use the same account for other campus services besides LON-CAPA, (e.g., e-mail, course registration, etc.), a separate centrally managed mechanism likely exists to reset a password. However, if your account is used for just LON-CAPA access you will probably be able to reset a password from this page.');
1.8 bisitz 135: $msg .= '<br /><br />'.&mt('Three conditions must be met:')
136: .'<ul><li>'.&mt('An e-mail address must have previously been associated with your LON-CAPA username.').'</li>'
137: .'<li>'.&mt('You must be able to access e-mail sent to that address.').'</li>'
138: .'<li>'.&mt('Your LON-CAPA account must be of a type for which LON-CAPA can reset a password.')
139: .'</ul>';
1.1 raeburn 140: $msg .= qq|
141: <form name="forgotpw" method="post">
142: <table>
143: <tr><td>
144: <tr><td align="left">LON-CAPA $lt{'unam'}: </td>
1.16 bisitz 145: <td><input type="text" name="uname" size="15" /></td></tr>
1.1 raeburn 146: <tr><td align="left">LON-CAPA $lt{'udom'}: </td>
147: <td>|;
148: $msg .= &Apache::loncommon::select_dom_form($defdom,'udom');
149: $msg .= qq|</td></tr>
1.3 raeburn 150: <tr><td align="left">$lt{'uemail'}: </td>
1.16 bisitz 151: <td><input type="text" name="useremail" size="30" /></td></tr>
1.1 raeburn 152: <tr><td colspan="2" align="left"><br />
1.16 bisitz 153: <input type="submit" value="$lt{'proc'}" /></td></tr>
1.1 raeburn 154: </table>
1.2 albertel 155: </form>
1.1 raeburn 156: |;
157: return $msg;
158: }
159:
160: sub send_token {
161: my ($uname,$udom,$email,$server,$domdesc,$contact_name,
162: $contact_email) = @_;
1.11 bisitz 163: my $msg = &mt('Thank you for your request to reset the password for your LON-CAPA account.').'<br /><br />';
1.1 raeburn 164:
165: my $now = time;
166: my $temppasswd = &create_passwd();
1.2 albertel 167: my %info = ('ip' => $ENV{'REMOTE_ADDR'},
168: 'time' => $now,
169: 'domain' => $udom,
170: 'username' => $uname,
171: 'email' => $email,
172: 'temppasswd' => $temppasswd);
1.1 raeburn 173:
1.3 raeburn 174: my $token = &Apache::lonnet::tmpput(\%info,$server,'resetpw');
175: if ($token !~ /^error/ && $token ne 'no_such_host') {
1.2 albertel 176: my $esc_token = &escape($token);
1.15 raeburn 177: my $showtime = &Apache::lonlocal::locallocaltime(time);
178: my $reseturl = &Apache::lonnet::absolute_url().'/adm/resetpw?token='.$esc_token;
179: 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 180: my $result = &send_mail($domdesc,$email,$mailmsg,$contact_name,
181: $contact_email);
182: if ($result eq 'ok') {
1.13 schafran 183: $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 />The link included in the message will be valid for the next <b>two</b> hours.");
1.1 raeburn 184: } else {
1.7 albertel 185: $msg .= &mt("An error occurred when sending a message to the e-mail address associated with your LON-CAPA account. Please contact the [_1] ([_2]) for assistance.",$contact_name,$contact_email);
1.1 raeburn 186: }
187: } else {
1.4 albertel 188: $msg .= &mt("An error occurred creating a token required for the password reset process. Please contact the [_1] ([_2]) for assistance.",$contact_name,$contact_email);
1.1 raeburn 189: }
190: return $msg;
191: }
192:
193: sub send_mail {
194: my ($domdesc,$email,$mailmsg,$contact_name,$contact_email) = @_;
195: my $outcome;
196: my $requestmail = "To: $email\n".
197: "From: $contact_name <$contact_email>\n".
198: "Subject: ".&mt('Your LON-CAPA account')."\n".
199: "\n\n".$mailmsg."\n\n".
200: &mt('[_1] LON-CAPA support team',$domdesc)."\n".
201: "$contact_email\n";
202: if (open(MAIL, "|/usr/lib/sendmail -oi -t -odb")) {
203: print MAIL $requestmail;
204: close(MAIL);
205: $outcome = 'ok';
206: } else {
207: $outcome = 'fail';
208: }
209: return $outcome;
210: }
211:
212: sub invalid_state {
213: my ($error,$domdesc,$contact_name,$contact_email) = @_;
214: my $msg;
215: if ($error eq 'invalid') {
1.8 bisitz 216: $msg = &mt('The username you provided was not verified as a valid username in the LON-CAPA system for the [_1] domain.',$domdesc)
217: .' '.&mt('Please [_1]go back[_2] and try again.','<a href="javascript:history.go(-1)"><u>','</u></a>');
1.1 raeburn 218: } else {
1.3 raeburn 219: if ($error eq 'baduseremail') {
220: $msg = &mt('The e-mail address you provided does not appear to be a valid address.');
221: } elsif ($error eq 'mismatch') {
222: $msg = &mt('The e-mail address you provided does not match the address recorded in the LON-CAPA system for the username and domain you provided.');
223: } elsif ($error eq 'missing') {
1.1 raeburn 224: $msg = &mt('A valid e-mail address was not located in the LON-CAPA system for the username and domain you provided.');
225: } elsif ($error eq 'authentication') {
226: $msg = &mt('The username you provided uses an authentication type which can not be reset directly via LON-CAPA.');
227: }
228: if ($contact_email ne '') {
229: my $escuri = &HTML::Entities::encode('/adm/resetpw','&<>"');
1.8 bisitz 230: $msg .= '<br /> '.&mt('You may wish to contact the [_1]LON-CAPA helpdesk[_2] for the [_3] domain.'
231: ,'<a href="/adm/helpdesk?origurl='.$escuri.'">','</a>',$domdesc);
1.1 raeburn 232: } else {
1.8 bisitz 233: $msg .= '<br /> '.&mt('You may wish to send an e-mail to the server administrator: [_1] for the [_2] domain.',$Apache::lonnet::perlvar{'AdminEmail'},$domdesc);
1.1 raeburn 234: }
235: }
236: return $msg;
237: }
238:
239: sub reset_passwd {
240: my ($r,$token,$contact_name,$contact_email) = @_;
241: my $msg;
242: my %data = &Apache::lonnet::tmpget($token);
243: my $now = time;
244: if (keys(%data) == 0) {
1.17 bisitz 245: $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.'
246: ,'<a href="/adm/resetpw">','</a>');
1.1 raeburn 247: return $msg;
248: }
249: if (($data{'time'} =~ /^\d+$/) &&
250: ($data{'username'} ne '') &&
251: ($data{'domain'} ne '') &&
1.3 raeburn 252: ($data{'email'} =~ /^[^\@]+\@[^\@]+\.[^\@\.]+$/) &&
1.1 raeburn 253: ($data{'temppasswd'} =~/^\w+$/)) {
1.9 raeburn 254: my $reqtime = &Apache::lonlocal::locallocaltime($data{'time'});
1.1 raeburn 255: if ($now - $data{'time'} < 7200) {
256: if ($env{'form.action'} eq 'verify_and_change_pass') {
257: my $change_failed =
1.2 albertel 258: &Apache::lonpreferences::verify_and_change_password($r,'reset_by_email',$token);
1.1 raeburn 259: if (!$change_failed) {
260: my $delete = &Apache::lonnet::tmpdel($token);
1.9 raeburn 261: my $now = &Apache::lonlocal::locallocaltime(time);
1.1 raeburn 262: my $domdesc =
1.6 albertel 263: &Apache::lonnet::domain($data{'domain'},'description');
1.1 raeburn 264: 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";
265: my $result = &send_mail($domdesc,$data{'email'},$mailmsg,
266: $contact_name,$contact_email);
267: if ($result eq 'ok') {
268: $msg .= &mt('An e-mail confirming setting of the password for your LON-CAPA account has been sent to [_1].',$data{'email'});
269: } else {
270: $msg .= &mt('An error occurred when sending e-mail to [_1] confirming setting of your new password.',$data{'email'});
271: }
1.17 bisitz 272: $msg .= '<br /><br />'
273: .'<a href="/adm/login">'.&mt('Go to the login page').'</a>.';
1.1 raeburn 274: } else {
1.17 bisitz 275: $msg .= &mt('A problem occurred when attempting to reset the password for your account. Please contact the [_1] - ([_2]) for assistance.'
276: ,$contact_name
277: ,'<a href="mailto:'.$contact_email.'">'.$contact_email.'</a>');
1.1 raeburn 278: }
279: } else {
1.13 schafran 280: $r->print(&mt('The token included in an e-mail sent to you [_1] has been verified, so you may now proceed to reset the password for your LON-CAPA account.',$reqtime).'<br /><br />');
1.1 raeburn 281: $r->print(&mt('Please enter the username and domain of the LON-CAPA account, and the associated e-mail address, for which you are setting a password. The new password must contain at least 7 characters.').' '.&mt('Your new password will be sent to the LON-CAPA server in an encrypted form.').'<br />');
282: &Apache::lonpreferences::passwordchanger($r,'','reset_by_email',$token);
283: }
284: } else {
1.17 bisitz 285: $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.'
286: ,'<a href="/adm/resetpw">','</a>');
1.1 raeburn 287: }
288: } else {
1.17 bisitz 289: $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.'
290: ,'<a href="/adm/resetpw">','</a>');
1.1 raeburn 291: }
292: return $msg;
293: }
294:
295: sub create_passwd {
296: my $passwd = '';
1.2 albertel 297: my @letts = ("a".."z");
1.1 raeburn 298: for (my $i=0; $i<8; $i++) {
1.2 albertel 299: my $lettnum = int(rand(2));
1.1 raeburn 300: my $item = '';
301: if ($lettnum) {
1.2 albertel 302: $item = $letts[int(rand(26))];
303: my $uppercase = int(rand(2));
1.1 raeburn 304: if ($uppercase) {
305: $item =~ tr/a-z/A-Z/;
306: }
307: } else {
1.2 albertel 308: $item = int(rand(10));
1.1 raeburn 309: }
310: $passwd .= $item;
311: }
312: return ($passwd);
313: }
314:
315: 1;
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