Annotation of loncom/interface/resetpw.pm, revision 1.13
1.1 raeburn 1: # The LearningOnline Network
2: # Allow access to password changing via a token sent to user's e-mail.
3: #
4: # Copyright Michigan State University Board of Trustees
5: #
6: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
7: #
8: # LON-CAPA is free software; you can redistribute it and/or modify
9: # it under the terms of the GNU General Public License as published by
10: # the Free Software Foundation; either version 2 of the License, or
11: # (at your option) any later version.
12: #
13: # LON-CAPA is distributed in the hope that it will be useful,
14: # but WITHOUT ANY WARRANTY; without even the implied warranty of
15: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16: # GNU General Public License for more details.
17: #
18: # You should have received a copy of the GNU General Public License
19: # along with LON-CAPA; if not, write to the Free Software
20: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21: #
22: # /home/httpd/html/adm/gpl.txt
23: #
24: # http://www.lon-capa.org/
25: #
26: #
27: package Apache::resetpw;
28:
29: use strict;
30: use Apache::Constants qw(:common);
31: use Apache::lonacc;
32: use Apache::lonnet;
33: use Apache::loncommon;
34: use Apache::lonlocal;
35: use LONCAPA;
36:
37: sub handler {
38: my $r = shift;
39: &Apache::loncommon::content_type($r,'text/html');
40: $r->send_http_header;
41: if ($r->header_only) {
42: return OK;
43: }
44: my $contact_name = &mt('LON-CAPA helpdesk');
45: my $contact_email = $r->dir_config('lonSupportEMail');
46: my $server = $r->dir_config('lonHostID');
47: my $defdom = $r->dir_config('lonDefDomain');
48: &Apache::lonacc::get_posted_cgi($r);
49: &Apache::lonlocal::get_language_handle($r);
50: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['token']);
51:
52: my @emailtypes = ('permanentemail','critnotification','notification');
1.2 albertel 53: my $uname = &unescape($env{'form.uname'});
1.1 raeburn 54: my $udom = $env{'form.udom'};
55: my $token = $env{'form.token'};
1.10 raeburn 56: my $start_page =
57: &Apache::loncommon::start_page('Reset password','',
58: {
59: 'no_inline_link' => 1,});
60: $r->print($start_page);
1.11 bisitz 61: $r->print('<h3>'.&mt('Reset forgotten LON-CAPA password').'</h3>');
1.1 raeburn 62: my $output;
63: if ($token) {
64: $output = &reset_passwd($r,$token,$contact_name,$contact_email);
65: } elsif ($uname && $udom) {
1.6 albertel 66: my $domdesc = &Apache::lonnet::domain($udom,'description');
1.1 raeburn 67: my $authtype = &Apache::lonnet::queryauthenticate($uname,$udom);
68: if ($authtype =~ /^internal/) {
1.3 raeburn 69: my $useremail = $env{'form.useremail'};
70: if ($useremail !~ /^[^\@]+\@[^\@]+\.[^\@\.]+$/) {
71: $output = &invalid_state('baduseremail',$domdesc,
72: $contact_name,$contact_email);
73: } else {
74: my %userinfo =
1.4 albertel 75: &Apache::lonnet::get('environment',\@emailtypes,
76: $udom,$uname);
1.3 raeburn 77: my $email = '';
78: my $emailtarget;
79: foreach my $type (@emailtypes) {
80: $email = $userinfo{$type};
81: if ($email =~ /[^\@]+\@[^\@]+/) {
82: $emailtarget = $type;
83: last;
84: }
85: }
86: if ($email =~ /^[^\@]+\@[^\@]+\.[^\@\.]+$/) {
87: if ($useremail eq $email) {
88: $output = &send_token($uname,$udom,$email,$server,
89: $domdesc,$contact_name,
90: $contact_email);
91: } else {
92: $output = &invalid_state('mismatch',$domdesc,
93: $contact_name,
94: $contact_email);
95: }
96: } else {
97: $output = &invalid_state('missing',$domdesc,
98: $contact_name,$contact_email);
1.1 raeburn 99: }
100: }
101: } elsif ($authtype =~ /^(krb|unix|local)/) {
102: $output = &invalid_state('authentication',$domdesc,
103: $contact_name,$contact_email);
104: } else {
105: $output = &invalid_state('invalid',$domdesc,
106: $contact_name,$contact_email);
107: }
108: } else {
109: $output = &get_uname($defdom);
110: }
111: $r->print($output);
112: $r->print(&Apache::loncommon::end_page());
113: return OK;
114: }
115:
116: sub get_uname {
117: my ($defdom) = @_;
118: my %lt = &Apache::lonlocal::texthash(
119: unam => 'username',
120: udom => 'domain',
1.12 schafran 121: uemail => 'E-mail address in LON-CAPA',
1.1 raeburn 122: proc => 'Proceed');
123:
124: 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 125: $msg .= '<br /><br />'.&mt('Three conditions must be met:')
126: .'<ul><li>'.&mt('An e-mail address must have previously been associated with your LON-CAPA username.').'</li>'
127: .'<li>'.&mt('You must be able to access e-mail sent to that address.').'</li>'
128: .'<li>'.&mt('Your LON-CAPA account must be of a type for which LON-CAPA can reset a password.')
129: .'</ul>';
1.1 raeburn 130: $msg .= qq|
131: <form name="forgotpw" method="post">
132: <table>
133: <tr><td>
134: <tr><td align="left">LON-CAPA $lt{'unam'}: </td>
1.5 raeburn 135: <td><input type="text" name="uname" size="15" /> </td></tr>
1.1 raeburn 136: <tr><td align="left">LON-CAPA $lt{'udom'}: </td>
137: <td>|;
138: $msg .= &Apache::loncommon::select_dom_form($defdom,'udom');
139: $msg .= qq|</td></tr>
1.3 raeburn 140: <tr><td align="left">$lt{'uemail'}: </td>
1.5 raeburn 141: <td><input type="text" name="useremail" size="30" /></td></tr>
1.1 raeburn 142: <tr><td colspan="2" align="left"><br />
143: <input type="button" value="$lt{'proc'}" onClick="document.forgotpw.submit()"></td></tr>
144: </table>
1.2 albertel 145: </form>
1.1 raeburn 146: |;
147: return $msg;
148: }
149:
150: sub send_token {
151: my ($uname,$udom,$email,$server,$domdesc,$contact_name,
152: $contact_email) = @_;
1.11 bisitz 153: my $msg = &mt('Thank you for your request to reset the password for your LON-CAPA account.').'<br /><br />';
1.1 raeburn 154:
155: my $now = time;
156: my $temppasswd = &create_passwd();
1.2 albertel 157: my %info = ('ip' => $ENV{'REMOTE_ADDR'},
158: 'time' => $now,
159: 'domain' => $udom,
160: 'username' => $uname,
161: 'email' => $email,
162: 'temppasswd' => $temppasswd);
1.1 raeburn 163:
1.3 raeburn 164: my $token = &Apache::lonnet::tmpput(\%info,$server,'resetpw');
165: if ($token !~ /^error/ && $token ne 'no_such_host') {
1.2 albertel 166: my $esc_token = &escape($token);
1.9 raeburn 167: my $mailmsg = "A request was submitted on ".&Apache::lonlocal::locallocaltime(time)." for a reset of the ".
1.1 raeburn 168: "password for your LON-CAPA account.".
169: "To complete this process please open a web browser and enter the following ".
170: "URL in the address/location box: ".&Apache::lonnet::absolute_url()."/adm/resetpw?token=$esc_token";
171: my $result = &send_mail($domdesc,$email,$mailmsg,$contact_name,
172: $contact_email);
173: if ($result eq 'ok') {
1.13 ! schafran 174: $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 175: } else {
1.7 albertel 176: $msg .= &mt("An error occurred when sending a message to the e-mail address associated with your LON-CAPA account. Please contact the [_1] ([_2]) for assistance.",$contact_name,$contact_email);
1.1 raeburn 177: }
178: } else {
1.4 albertel 179: $msg .= &mt("An error occurred creating a token required for the password reset process. Please contact the [_1] ([_2]) for assistance.",$contact_name,$contact_email);
1.1 raeburn 180: }
181: return $msg;
182: }
183:
184: sub send_mail {
185: my ($domdesc,$email,$mailmsg,$contact_name,$contact_email) = @_;
186: my $outcome;
187: my $requestmail = "To: $email\n".
188: "From: $contact_name <$contact_email>\n".
189: "Subject: ".&mt('Your LON-CAPA account')."\n".
190: "\n\n".$mailmsg."\n\n".
191: &mt('[_1] LON-CAPA support team',$domdesc)."\n".
192: "$contact_email\n";
193: if (open(MAIL, "|/usr/lib/sendmail -oi -t -odb")) {
194: print MAIL $requestmail;
195: close(MAIL);
196: $outcome = 'ok';
197: } else {
198: $outcome = 'fail';
199: }
200: return $outcome;
201: }
202:
203: sub invalid_state {
204: my ($error,$domdesc,$contact_name,$contact_email) = @_;
205: my $msg;
206: if ($error eq 'invalid') {
1.8 bisitz 207: $msg = &mt('The username you provided was not verified as a valid username in the LON-CAPA system for the [_1] domain.',$domdesc)
208: .' '.&mt('Please [_1]go back[_2] and try again.','<a href="javascript:history.go(-1)"><u>','</u></a>');
1.1 raeburn 209: } else {
1.3 raeburn 210: if ($error eq 'baduseremail') {
211: $msg = &mt('The e-mail address you provided does not appear to be a valid address.');
212: } elsif ($error eq 'mismatch') {
213: $msg = &mt('The e-mail address you provided does not match the address recorded in the LON-CAPA system for the username and domain you provided.');
214: } elsif ($error eq 'missing') {
1.1 raeburn 215: $msg = &mt('A valid e-mail address was not located in the LON-CAPA system for the username and domain you provided.');
216: } elsif ($error eq 'authentication') {
217: $msg = &mt('The username you provided uses an authentication type which can not be reset directly via LON-CAPA.');
218: }
219: if ($contact_email ne '') {
220: my $escuri = &HTML::Entities::encode('/adm/resetpw','&<>"');
1.8 bisitz 221: $msg .= '<br /> '.&mt('You may wish to contact the [_1]LON-CAPA helpdesk[_2] for the [_3] domain.'
222: ,'<a href="/adm/helpdesk?origurl='.$escuri.'">','</a>',$domdesc);
1.1 raeburn 223: } else {
1.8 bisitz 224: $msg .= '<br /> '.&mt('You may wish to send an e-mail to the server administrator: [_1] for the [_2] domain.',$Apache::lonnet::perlvar{'AdminEmail'},$domdesc);
1.1 raeburn 225: }
226: }
227: return $msg;
228: }
229:
230: sub reset_passwd {
231: my ($r,$token,$contact_name,$contact_email) = @_;
232: my $msg;
233: my %data = &Apache::lonnet::tmpget($token);
234: my $now = time;
235: if (keys(%data) == 0) {
236: $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 <a href="/adm/resetpw">new request</a> 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.');
237: return $msg;
238: }
239: if (($data{'time'} =~ /^\d+$/) &&
240: ($data{'username'} ne '') &&
241: ($data{'domain'} ne '') &&
1.3 raeburn 242: ($data{'email'} =~ /^[^\@]+\@[^\@]+\.[^\@\.]+$/) &&
1.1 raeburn 243: ($data{'temppasswd'} =~/^\w+$/)) {
1.9 raeburn 244: my $reqtime = &Apache::lonlocal::locallocaltime($data{'time'});
1.1 raeburn 245: if ($now - $data{'time'} < 7200) {
246: if ($env{'form.action'} eq 'verify_and_change_pass') {
247: my $change_failed =
1.2 albertel 248: &Apache::lonpreferences::verify_and_change_password($r,'reset_by_email',$token);
1.1 raeburn 249: if (!$change_failed) {
250: my $delete = &Apache::lonnet::tmpdel($token);
1.9 raeburn 251: my $now = &Apache::lonlocal::locallocaltime(time);
1.1 raeburn 252: my $domdesc =
1.6 albertel 253: &Apache::lonnet::domain($data{'domain'},'description');
1.1 raeburn 254: 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";
255: my $result = &send_mail($domdesc,$data{'email'},$mailmsg,
256: $contact_name,$contact_email);
257: if ($result eq 'ok') {
258: $msg .= &mt('An e-mail confirming setting of the password for your LON-CAPA account has been sent to [_1].',$data{'email'});
259: } else {
260: $msg .= &mt('An error occurred when sending e-mail to [_1] confirming setting of your new password.',$data{'email'});
261: }
1.4 albertel 262: $msg .= '<br /><br />'.&mt('<a href="/adm/login">Go to the login page</a>.');
1.1 raeburn 263: } else {
264: $msg .= &mt('A problem occurred when attempting to reset the password for your account. Please contact the [_1] - (<a href="mailto:[_2]">[_2]</a>) for assistance.',$contact_name,$contact_email);
265: }
266: } else {
1.13 ! schafran 267: $r->print(&mt('The token included in an e-mail sent to you [_1] has been verified, so you may now proceed to reset the password for your LON-CAPA account.',$reqtime).'<br /><br />');
1.1 raeburn 268: $r->print(&mt('Please enter the username and domain of the LON-CAPA account, and the associated e-mail address, for which you are setting a password. The new password must contain at least 7 characters.').' '.&mt('Your new password will be sent to the LON-CAPA server in an encrypted form.').'<br />');
269: &Apache::lonpreferences::passwordchanger($r,'','reset_by_email',$token);
270: }
271: } else {
272: $msg = &mt('Sorry, the token generated when you requested a password reset has expired. Please submit a <a href="/adm/resetpw">new request</a>, 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.');
273: }
274: } else {
275: $msg .= &mt('Sorry, the URL generated when you requested reset of your password contained incomplete information. Please submit a <a href="/adm/resetpw">new request</a> for a password reset, and use the new URL that will be sent to your e-mail account to complete the process.');
276: }
277: return $msg;
278: }
279:
280: sub create_passwd {
281: my $passwd = '';
1.2 albertel 282: my @letts = ("a".."z");
1.1 raeburn 283: for (my $i=0; $i<8; $i++) {
1.2 albertel 284: my $lettnum = int(rand(2));
1.1 raeburn 285: my $item = '';
286: if ($lettnum) {
1.2 albertel 287: $item = $letts[int(rand(26))];
288: my $uppercase = int(rand(2));
1.1 raeburn 289: if ($uppercase) {
290: $item =~ tr/a-z/A-Z/;
291: }
292: } else {
1.2 albertel 293: $item = int(rand(10));
1.1 raeburn 294: }
295: $passwd .= $item;
296: }
297: return ($passwd);
298: }
299:
300: 1;
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