Annotation of loncom/auth/lonlogin.pm, revision 1.44.2.1
1.1 albertel 1: # The LearningOnline Network
2: # Login Screen
1.11 www 3: #
1.44.2.1! albertel 4: # $Id: lonlogin.pm,v 1.44 2003/08/05 12:52:23 www Exp $
1.11 www 5: #
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: #
1.2 www 28: # 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14,
1.10 www 29: # 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9,
30: # 1/17/01 Gerd Kortemeyer
1.1 albertel 31: #
1.14 albertel 32: # 2/7/02,2/8,2/12,2/14,2/15,2/19 Josh Brunskole
1.19 bowersj2 33: #
34: # 7/10/02 Jeremy Bowers
1.14 albertel 35:
1.1 albertel 36: package Apache::lonlogin;
37:
38: use strict;
39: use Apache::Constants qw(:common);
40: use Apache::File ();
41: use Apache::lonnet();
1.12 albertel 42: use Apache::loncommon();
1.1 albertel 43:
44: sub handler {
45: my $r = shift;
46: $r->content_type('text/html');
1.12 albertel 47: &Apache::loncommon::no_cache($r);
1.1 albertel 48: $r->send_http_header;
49: return OK if $r->header_only;
50:
1.16 www 51:
52: &Apache::loncommon::get_unprocessed_cgi
1.39 www 53: ($ENV{'QUERY_STRING'}.'&'.$ENV{'request.querystring'},
1.43 www 54: ['interface','username','domain','firsturl','localpath','localres']);
1.39 www 55:
1.32 www 56: # ----------------------------------------------------------- Process Interface
1.18 www 57: $ENV{'form.interface'}=~s/\W//g;
1.16 www 58:
1.32 www 59: my $textbrowsers=$r->dir_config('lonTextBrowsers');
60: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
61:
62: foreach (split(/\:/,$textbrowsers)) {
63: if ($httpbrowser=~/$_/i) {
64: $ENV{'form.interface'}='textual';
65: }
66: }
67:
1.16 www 68: my $fullgraph=($ENV{'form.interface'} ne 'textual');
1.40 albertel 69: my $port_to_use=$r->dir_config('lonhttpdPort');
70: if (!defined($port_to_use)) {
71: $port_to_use='8080';
72: }
73: my $iconpath= 'http://'.$ENV{'HTTP_HOST'}.':'.$port_to_use.
1.26 www 74: $r->dir_config('lonIconsURL');
1.1 albertel 75: my $domain = $r->dir_config('lonDefDomain');
1.44.2.1! albertel 76: if (($ENV{'form.domain'}) &&
! 77: ($Apache::lonnet::domaindescription{$ENV{'form.domain'}})) {
! 78: $domain=$ENV{'form.domain'};
! 79: }
1.1 albertel 80: my $role = $r->dir_config('lonRole');
81: my $loadlim = $r->dir_config('lonLoadLim');
82: my $servadm = $r->dir_config('lonAdmEMail');
83: my $sysadm = $r->dir_config('lonSysEMail');
84: my $lonhost = $r->dir_config('lonHostID');
85: my $tabdir = $r->dir_config('lonTabDir');
1.6 www 86: my $include = $r->dir_config('lonIncludes');
1.37 www 87: my $expire = $r->dir_config('lonExpire');
1.44 www 88: my $version = $r->dir_config('lonVersion');
1.1 albertel 89:
1.30 www 90: # --------------------------------------------- Default values for login fields
91:
92: my $authusername=($ENV{'form.username'}?$ENV{'form.username'}:'');
93: my $authdomain=($ENV{'form.domain'}?$ENV{'form.domain'}:$domain);
94:
95: # ---------------------------------------------------------- Determine own load
1.1 albertel 96: my $loadavg;
1.41 albertel 97: {
98: my $loadfile=Apache::File->new('/proc/loadavg');
99: $loadavg=<$loadfile>;
100: }
1.1 albertel 101: $loadavg =~ s/\s.*//g;
102: my $loadpercent=100*$loadavg/$loadlim;
1.41 albertel 103: my $userloadpercent=&Apache::lonnet::userload();
1.1 albertel 104:
1.30 www 105: # ------------------------------------------------------- Do the load balancing
1.10 www 106: my $otherserver='http://'.$ENV{'SERVER_NAME'};
1.31 www 107: my $firsturl=
108: ($ENV{'request.firsturl'}?$ENV{'request.firsturl'}:$ENV{'form.firsturl'});
1.1 albertel 109: # ---------------------------------------- Are we access server and overloaded?
1.41 albertel 110: if (($role eq 'access') &&
111: (($userloadpercent>100.0)||($loadpercent>100.0))) {
112: $otherserver=Apache::lonnet::spareserver($loadpercent,$userloadpercent);
1.1 albertel 113: }
1.6 www 114:
115: # -------------------------------------------------------- Set login parameters
116:
117: my @hexstr=('0','1','2','3','4','5','6','7',
118: '8','9','a','b','c','d','e','f');
119: my $lkey='';
120: for (0..7) {
121: $lkey.=$hexstr[rand(15)];
122: }
123:
124: my $ukey='';
125: for (0..7) {
126: $ukey.=$hexstr[rand(15)];
127: }
128:
129: my $lextkey=hex($lkey);
1.15 www 130: if ($lextkey>2147483647) { $lextkey-=4294967296; }
131:
1.6 www 132: my $uextkey=hex($ukey);
1.15 www 133: if ($uextkey>2147483647) { $uextkey-=4294967296; }
134:
1.31 www 135: # -------------------------------------------------------- Store away log token
1.6 www 136: my $logtoken=Apache::lonnet::reply(
1.7 www 137: 'tmpput:'.$ukey.$lkey.'&'.$firsturl,
1.6 www 138: $lonhost);
1.31 www 139:
140: # ------------------- If we cannot talk to ourselves, we are in serious trouble
141:
142: if ($logtoken eq 'con_lost') {
143: my $spares='';
144: foreach (keys %Apache::lonnet::hostname) {
145: if ($_ ne $lonhost) {
146: $spares.='<br /><a href="http://'.$Apache::lonnet::hostname{$_}.
147: '/adm/login?domain='.$authdomain.'">'.
148: $Apache::lonnet::hostname{$_}.'</a>';
149: if ($Apache::lonnet::spareid{$_}) {
150: $spares.=' (preferred)';
151: }
152: }
153: }
154: $r->print(<<ENDTROUBLE);
155: <html>
156: <head><title>The LearningOnline Network with CAPA</title></head>
157: <body bgcolor="#FFFFFF">
158: <img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />
159: <h3>This LON-CAPA server is temporarily not available for login</h3>
160: <p>Please attempt to login to one of the following servers:</p>$spares
161: <p>If the problem persists, please contact <tt>$servadm</tt>.</p>
162: </body>
163: </html>
164: ENDTROUBLE
165: return OK;
166: }
167:
168: # ----------------------------------------------- Apparently we are in business
169:
1.20 www 170: my $domainlogo=&Apache::loncommon::domainlogo();
1.38 www 171: $servadm=~s/\,/\<br \/\>/g;
172: $sysadm=~s/\,/\<br \/\>/g;
173:
1.6 www 174: # --------------------------------------------------- Print login screen header
175: $r->print(<<ENDHEADER);
1.1 albertel 176: <html>
177: <head>
1.37 www 178: <meta HTTP-EQUIV="Refresh" CONTENT="$expire; url=/adm/roles" />
1.2 www 179: <title>The LearningOnline Network with CAPA Login</title>
1.1 albertel 180: </head>
1.6 www 181: ENDHEADER
182: # ---------------------------------------------------- Serve out DES JavaScript
183: {
184: my $jsh=Apache::File->new($include."/londes.js");
185: $r->print(<$jsh>);
186: }
1.21 www 187:
188: # ----------------------------------------------------------- Front page design
1.35 www 189: my $pgbg=
1.44.2.1! albertel 190: ($fullgraph?&Apache::loncommon::designparm('login.pgbg',$domain):'#FFFFFF');
1.35 www 191: my $font=
1.44.2.1! albertel 192: ($fullgraph?&Apache::loncommon::designparm('login.font',$domain):'#000000');
1.35 www 193: my $link=
1.44.2.1! albertel 194: ($fullgraph?&Apache::loncommon::designparm('login.link',$domain):'#0000FF');
1.35 www 195: my $vlink=
1.44.2.1! albertel 196: ($fullgraph?&Apache::loncommon::designparm('login.vlink',$domain):'#0000FF');
! 197: my $alink=&Apache::loncommon::designparm('login.alink',$domain);
1.35 www 198: my $mainbg=
1.44.2.1! albertel 199: ($fullgraph?&Apache::loncommon::designparm('login.mainbg',$domain):'#FFFFFF');
1.35 www 200: my $sidebg=
1.44.2.1! albertel 201: ($fullgraph?&Apache::loncommon::designparm('login.sidebg',$domain):'#FFFFFF');
! 202: my $logo=&Apache::loncommon::designparm('login.logo',$domain);
! 203: my $img=&Apache::loncommon::designparm('login.img',$domain);
1.21 www 204:
205:
1.6 www 206: # ---------------------------------------------------------- Serve rest of page
1.16 www 207: $r->print(<<ENDSCRIPT);
1.6 www 208:
1.21 www 209: <body bgcolor="$pgbg" text="$font" link="$link" vlink="$vlink" alink="$alink"
1.27 albertel 210: topmargin=0 leftmargin=0 marginwidth=0 marginheight=0>
1.6 www 211:
1.14 albertel 212: <script language="JavaScript">
213: function send()
214: {
1.6 www 215: this.document.server.elements.uname.value
216: =this.document.client.elements.uname.value;
217:
218: this.document.server.elements.udom.value
219: =this.document.client.elements.udom.value;
220:
1.33 www 221: this.document.server.elements.imagesuppress.value
1.36 www 222: =this.document.client.elements.imagesuppress.checked;
1.33 www 223:
224: this.document.server.elements.embedsuppress.value
1.36 www 225: =this.document.client.elements.embedsuppress.checked;
1.33 www 226:
1.34 www 227: this.document.server.elements.appletsuppress.value
1.36 www 228: =this.document.client.elements.appletsuppress.checked;
1.34 www 229:
1.33 www 230: this.document.server.elements.fontenhance.value
1.36 www 231: =this.document.client.elements.fontenhance.checked;
1.33 www 232:
233: this.document.server.elements.blackwhite.value
1.36 www 234: =this.document.client.elements.blackwhite.checked;
1.33 www 235:
1.35 www 236: this.document.server.elements.remember.value
1.36 www 237: =this.document.client.elements.remember.checked;
1.35 www 238:
1.6 www 239: uextkey=this.document.client.elements.uextkey.value;
240: lextkey=this.document.client.elements.lextkey.value;
241: initkeys();
242:
243: this.document.server.elements.upass.value
244: =crypted(this.document.client.elements.upass.value);
245:
246: this.document.server.submit();
1.19 bowersj2 247: return false;
1.6 www 248: }
1.14 albertel 249: </script>
1.16 www 250: ENDSCRIPT
1.6 www 251:
1.16 www 252: if ($fullgraph) {
253: $r->print(
254: '<table width="100%" cellpadding=0 cellspacing=0 border=0>');
255: }
1.6 www 256:
1.16 www 257: $r->print(<<ENDSERVERFORM);
1.14 albertel 258: <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">
1.33 www 259: <input type="hidden" name="logtoken" value="$logtoken" />
260: <input type="hidden" name="serverid" value="$lonhost" />
261: <input type="hidden" name="interface" value="$ENV{'form.interface'}" />
262: <input type="hidden" name="uname" value="" />
263: <input type="hidden" name="upass" value="" />
264: <input type="hidden" name="udom" value="" />
265: <input type="hidden" name="imagesuppress" value="" />
1.34 www 266: <input type="hidden" name="appletsuppress" value="" />
1.33 www 267: <input type="hidden" name="embedsuppress" value="" />
268: <input type="hidden" name="fontenhance" value="" />
269: <input type="hidden" name="blackwhite" value="" />
1.35 www 270: <input type="hidden" name="remember" value="" />
1.43 www 271: <input type="hidden" name="localpath" value="$ENV{'form.localpath'}" />
272: <input type="hidden" name="localres" value="$ENV{'form.localres'}" />
1.14 albertel 273: </form>
1.16 www 274: ENDSERVERFORM
275: if ($fullgraph) { $r->print(<<ENDTOP);
1.14 albertel 276: <!-- The LON-CAPA Header -->
277: <tr>
278:
279: <!-- Row 1 Columns 2-4 -->
1.29 www 280: <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="$pgbg"><img src="$img" border=0 alt="The Learning Online Network with CAPA" /></td>
1.14 albertel 281: </tr>
282:
283: <!-- The gray bar that starts the two table frames -->
284: <tr>
285:
286: <!-- Row 2 Column 1 -->
1.21 www 287: <td width=182 height=27 bgcolor="$sidebg"> </td>
1.14 albertel 288:
289: <!-- Row 2 Column 2 -->
1.19 bowersj2 290: <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 alt="" /></td>
1.14 albertel 291:
292: <!-- Row 2 Column 3 -->
1.19 bowersj2 293: <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" alt="" /></td>
1.14 albertel 294:
295: <!-- Row 2 Column 4 -->
1.19 bowersj2 296: <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 alt="" /></td>
1.14 albertel 297: </tr>
298: <tr>
299:
300: <!-- A cell that will hold the 'access' and 'about' buttons -->
301: <!-- Row 3 Column 1 -->
1.21 www 302: <td valign="top" height=60 align="center" bgcolor="$sidebg">
1.19 bowersj2 303: <a href="/adm/login?interface=textual"><img src="$iconpath/accessbutton.gif" border=0 alt="Accessibility Options" /></a>
1.14 albertel 304: <br />
1.19 bowersj2 305: <a href="/adm/about.html"><img src="$iconpath/aboutlon.gif" border=0 alt="About LON-CAPA" /></a>
1.14 albertel 306: </td>
307:
308: <!-- The shaded space between the two main columns -->
309: <!-- Row 3 Column 2 -->
1.19 bowersj2 310: <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>
1.14 albertel 311:
312: <!-- The right main column holding the large LON-CAPA logo-->
313: <!-- Rows 3-4 Column 3 -->
1.21 www 314: <td align="center" valign="top" width="100%" height="100%" rowspan=2 bgcolor="$mainbg">
1.14 albertel 315: <center>
1.21 www 316: <img src="$logo" alt="" />
1.14 albertel 317: </center>
318: </td>
319:
320: <!-- Row 3 Column 4 -->
1.19 bowersj2 321: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>
1.14 albertel 322: </tr>
323: <tr>
324:
325: <!-- The entry form -->
326: <!-- Row 4 Column 1 -->
1.21 www 327: <td align="center" valign="middle" bgcolor="$sidebg">
1.16 www 328: ENDTOP
1.32 www 329: } else {
1.35 www 330: $r->print('<h1>The Learning<i>Online</i> Network with CAPA</h1><h2>Text-based Interface Login</h2>');
1.33 www 331: }
332: $r->print('<form name="client" onsubmit="return(send())">');
333: unless ($fullgraph) {
334: $r->print(<<ENDACCESSOPTIONS);
1.35 www 335: <h3>Select Accessibility Options</h3>
1.33 www 336: <input type="checkbox" name="imagesuppress" /> Suppress rendering of images<br />
1.34 www 337: <input type="checkbox" name="appletsuppress" /> Suppress Java applets<br />
1.33 www 338: <input type="checkbox" name="embedsuppress" /> Suppress rendering of embedded multimedia<br />
339: <input type="checkbox" name="fontenhance" /> Increase font size<br />
1.35 www 340: <input type="checkbox" name="blackwhite" /> Switch to black and white mode<br />
341: <p>If you have accessibility needs that are not addressed by this interface,
342: please
343: contact the system administrator at <tt>$sysadm</tt>.</p><br />
344: <input type="checkbox" name="remember" /> Remember these settings for next login<hr />
1.33 www 345: ENDACCESSOPTIONS
346: } else {
347: $r->print(<<ENDNOOPT);
348: <input type="hidden" name="imagesuppress" value="" />
349: <input type="hidden" name="embedsuppress" value="" />
1.34 www 350: <input type="hidden" name="appletsuppress" value="" />
1.33 www 351: <input type="hidden" name="fontenhance" value="" />
352: <input type="hidden" name="blackwhite" value="" />
1.35 www 353: <input type="hidden" name="remember" value="" />
1.33 www 354: ENDNOOPT
1.16 www 355: }
356: $r->print(<<ENDLOGIN);
1.14 albertel 357: <input type="hidden" name="lextkey" value="$lextkey">
358: <input type="hidden" name="uextkey" value="$uextkey">
359:
360: <!-- Start the sub-table for text and input alignment -->
361: <table border=0 cellspacing=0 cellpadding=0>
1.21 www 362: <tr><td bgcolor="$sidebg" colspan=2><img src="$iconpath/userauthentication.gif" alt="User Authentication" /></td></tr>
1.14 albertel 363: <tr>
1.21 www 364: <td bgcolor="$mainbg"><br /><font size=-1><b> User Name:</b></font></td>
1.30 www 365: <td bgcolor="$mainbg"><br /><input type="text" name="uname" size="10" value="$authusername" /></td>
1.14 albertel 366: </tr>
367: <tr>
1.21 www 368: <td bgcolor="$mainbg"><font size=-1><b> Password:</b></font></td>
369: <td bgcolor="$mainbg"><input type="password" name="upass" size="10" /></td>
1.14 albertel 370: </tr>
371: <tr>
1.21 www 372: <td bgcolor="$mainbg"><font size=-1><b> Domain:</b></font></td>
1.30 www 373: <td bgcolor="$mainbg"><input type="text" name="udom" size="10" value="$authdomain" /></td>
1.14 albertel 374: </tr>
375: <tr>
1.28 www 376: <td bgcolor="$mainbg"> <a href="/adm/loginproblems.html">Help</a></td>
377: <td bgcolor="$mainbg" valign="bottom" align="center">
1.14 albertel 378: <br />
1.19 bowersj2 379: <input type="submit" value="Log In" />
1.14 albertel 380: </td>
381: </tr>
382: </table>
383: <!-- End sub-table -->
384: </form>
1.16 www 385: ENDLOGIN
386: if ($fullgraph) {
387: $r->print(<<ENDDOCUMENT);
1.14 albertel 388: </td>
389:
390: <!-- Row 4 Column 2 -->
1.19 bowersj2 391: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>
1.14 albertel 392:
393: <!-- Row 4 Column 4 -->
1.19 bowersj2 394: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>
1.14 albertel 395: </tr>
396: <tr>
397:
398: <!-- Row 5 Column 1 -->
1.21 www 399: <td bgcolor="$sidebg" valign="middle" align="left">
1.14 albertel 400: <br />
401: <table border=0 cellspacing=0 cellpadding=0>
402: <tr>
1.21 www 403: <td bgcolor="$sidebg" align="left" valign="top">
1.14 albertel 404: <small><b> Domain: </b></small>
405: </td>
1.21 www 406: <td bgcolor="$sidebg" align="left" valign="top">
1.14 albertel 407: <small><tt> $domain</tt></small>
408: </td>
409: </tr>
410: <tr>
1.21 www 411: <td bgcolor="$sidebg" align="left" valign="top">
1.14 albertel 412: <small><b> Server: </b></small>
413: </td>
1.21 www 414: <td bgcolor="$sidebg" align="left" valign="top">
1.14 albertel 415: <small><tt> $lonhost ($role)</tt></small>
416: </td>
417: </tr>
418: <tr>
1.21 www 419: <td bgcolor="$sidebg" align="left" valign="top">
1.14 albertel 420: <small><b> Load: </b></small>
421: </td>
1.21 www 422: <td bgcolor="$sidebg" align="left" valign="top">
1.14 albertel 423: <small><tt> $loadpercent percent</tt></small>
1.42 albertel 424: </td>
425: </tr>
426: <tr>
427: <td bgcolor="$sidebg" align="left" valign="top">
428: <small><b> User Load: </b></small>
429: </td>
430: <td bgcolor="$sidebg" align="left" valign="top">
431: <small><tt> $userloadpercent percent</tt></small>
1.14 albertel 432: </td>
433: </tr>
434: </table>
435: <br />
436: <small>
437: <b> System Administration:</b><br />
438: <tt> $sysadm</tt><br />
439: <b> Server Administration:</b><br />
1.44 www 440: <tt> $servadm</tt><br /> <br />
441: $version
1.14 albertel 442: </small>
443: </td>
444:
445: <!-- Row 5 Column 2 -->
1.19 bowersj2 446: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>
1.14 albertel 447:
448: <!-- Row 5 Column 3 -->
1.21 www 449: <td width="100%" valign="bottom" bgcolor="$mainbg">
1.20 www 450: $domainlogo
451: </td>
1.14 albertel 452:
453: <!-- Row 5 Column 4 -->
1.19 bowersj2 454: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>
1.14 albertel 455: </tr>
456: <tr>
457:
458: <!-- Row 6 Column 1 -->
1.21 www 459: <td bgcolor="$sidebg"> </td>
1.14 albertel 460:
461: <!-- Row 6 Column 2 -->
1.19 bowersj2 462: <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" alt="" /></td>
1.14 albertel 463:
464: <!-- Row 6 Column 3 -->
1.19 bowersj2 465: <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" alt="" /></td>
1.14 albertel 466:
467: <!-- Row 6 Column 4 -->
1.19 bowersj2 468: <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" alt="" /></td>
1.14 albertel 469: </tr>
1.1 albertel 470: </table>
1.25 bowersj2 471:
472: <script>
473: // the if prevents the script error if the browser can't handle this
474: if ( document.client.uname ) { document.client.uname.focus(); }
475: </script>
1.14 albertel 476:
1.1 albertel 477: ENDDOCUMENT
1.16 www 478: }
479: $r->print('</body></html>');
1.1 albertel 480: return OK;
481: }
482:
483: 1;
484: __END__
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