Annotation of loncom/auth/lonlogin.pm, revision 1.45
1.1 albertel 1: # The LearningOnline Network
2: # Login Screen
1.11 www 3: #
1.45 ! www 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');
76: my $role = $r->dir_config('lonRole');
77: my $loadlim = $r->dir_config('lonLoadLim');
78: my $servadm = $r->dir_config('lonAdmEMail');
79: my $sysadm = $r->dir_config('lonSysEMail');
80: my $lonhost = $r->dir_config('lonHostID');
81: my $tabdir = $r->dir_config('lonTabDir');
1.6 www 82: my $include = $r->dir_config('lonIncludes');
1.37 www 83: my $expire = $r->dir_config('lonExpire');
1.44 www 84: my $version = $r->dir_config('lonVersion');
1.1 albertel 85:
1.30 www 86: # --------------------------------------------- Default values for login fields
87:
88: my $authusername=($ENV{'form.username'}?$ENV{'form.username'}:'');
89: my $authdomain=($ENV{'form.domain'}?$ENV{'form.domain'}:$domain);
90:
91: # ---------------------------------------------------------- Determine own load
1.1 albertel 92: my $loadavg;
1.41 albertel 93: {
94: my $loadfile=Apache::File->new('/proc/loadavg');
95: $loadavg=<$loadfile>;
96: }
1.1 albertel 97: $loadavg =~ s/\s.*//g;
98: my $loadpercent=100*$loadavg/$loadlim;
1.41 albertel 99: my $userloadpercent=&Apache::lonnet::userload();
1.1 albertel 100:
1.30 www 101: # ------------------------------------------------------- Do the load balancing
1.10 www 102: my $otherserver='http://'.$ENV{'SERVER_NAME'};
1.31 www 103: my $firsturl=
104: ($ENV{'request.firsturl'}?$ENV{'request.firsturl'}:$ENV{'form.firsturl'});
1.1 albertel 105: # ---------------------------------------- Are we access server and overloaded?
1.41 albertel 106: if (($role eq 'access') &&
107: (($userloadpercent>100.0)||($loadpercent>100.0))) {
108: $otherserver=Apache::lonnet::spareserver($loadpercent,$userloadpercent);
1.1 albertel 109: }
1.6 www 110:
1.45 ! www 111: # ----------------------------------------------------------- Get announcements
! 112: my $announcements=&Apache::lonnet::getannounce();
1.6 www 113: # -------------------------------------------------------- Set login parameters
114:
115: my @hexstr=('0','1','2','3','4','5','6','7',
116: '8','9','a','b','c','d','e','f');
117: my $lkey='';
118: for (0..7) {
119: $lkey.=$hexstr[rand(15)];
120: }
121:
122: my $ukey='';
123: for (0..7) {
124: $ukey.=$hexstr[rand(15)];
125: }
126:
127: my $lextkey=hex($lkey);
1.15 www 128: if ($lextkey>2147483647) { $lextkey-=4294967296; }
129:
1.6 www 130: my $uextkey=hex($ukey);
1.15 www 131: if ($uextkey>2147483647) { $uextkey-=4294967296; }
132:
1.31 www 133: # -------------------------------------------------------- Store away log token
1.6 www 134: my $logtoken=Apache::lonnet::reply(
1.7 www 135: 'tmpput:'.$ukey.$lkey.'&'.$firsturl,
1.6 www 136: $lonhost);
1.31 www 137:
138: # ------------------- If we cannot talk to ourselves, we are in serious trouble
139:
140: if ($logtoken eq 'con_lost') {
141: my $spares='';
142: foreach (keys %Apache::lonnet::hostname) {
143: if ($_ ne $lonhost) {
144: $spares.='<br /><a href="http://'.$Apache::lonnet::hostname{$_}.
145: '/adm/login?domain='.$authdomain.'">'.
146: $Apache::lonnet::hostname{$_}.'</a>';
147: if ($Apache::lonnet::spareid{$_}) {
148: $spares.=' (preferred)';
149: }
150: }
151: }
152: $r->print(<<ENDTROUBLE);
153: <html>
154: <head><title>The LearningOnline Network with CAPA</title></head>
155: <body bgcolor="#FFFFFF">
156: <img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />
157: <h3>This LON-CAPA server is temporarily not available for login</h3>
158: <p>Please attempt to login to one of the following servers:</p>$spares
159: <p>If the problem persists, please contact <tt>$servadm</tt>.</p>
160: </body>
161: </html>
162: ENDTROUBLE
163: return OK;
164: }
165:
166: # ----------------------------------------------- Apparently we are in business
167:
1.20 www 168: my $domainlogo=&Apache::loncommon::domainlogo();
1.38 www 169: $servadm=~s/\,/\<br \/\>/g;
170: $sysadm=~s/\,/\<br \/\>/g;
171:
1.6 www 172: # --------------------------------------------------- Print login screen header
173: $r->print(<<ENDHEADER);
1.1 albertel 174: <html>
175: <head>
1.37 www 176: <meta HTTP-EQUIV="Refresh" CONTENT="$expire; url=/adm/roles" />
1.2 www 177: <title>The LearningOnline Network with CAPA Login</title>
1.1 albertel 178: </head>
1.6 www 179: ENDHEADER
180: # ---------------------------------------------------- Serve out DES JavaScript
181: {
182: my $jsh=Apache::File->new($include."/londes.js");
183: $r->print(<$jsh>);
184: }
1.21 www 185:
186: # ----------------------------------------------------------- Front page design
1.35 www 187: my $pgbg=
188: ($fullgraph?&Apache::loncommon::designparm('login.pgbg'):'#FFFFFF');
189: my $font=
190: ($fullgraph?&Apache::loncommon::designparm('login.font'):'#000000');
191: my $link=
192: ($fullgraph?&Apache::loncommon::designparm('login.link'):'#0000FF');
193: my $vlink=
194: ($fullgraph?&Apache::loncommon::designparm('login.vlink'):'#0000FF');
1.21 www 195: my $alink=&Apache::loncommon::designparm('login.alink');
1.35 www 196: my $mainbg=
197: ($fullgraph?&Apache::loncommon::designparm('login.mainbg'):'#FFFFFF');
198: my $sidebg=
199: ($fullgraph?&Apache::loncommon::designparm('login.sidebg'):'#FFFFFF');
1.21 www 200: my $logo=&Apache::loncommon::designparm('login.logo');
201: my $img=&Apache::loncommon::designparm('login.img');
202:
203:
1.6 www 204: # ---------------------------------------------------------- Serve rest of page
1.16 www 205: $r->print(<<ENDSCRIPT);
1.6 www 206:
1.21 www 207: <body bgcolor="$pgbg" text="$font" link="$link" vlink="$vlink" alink="$alink"
1.27 albertel 208: topmargin=0 leftmargin=0 marginwidth=0 marginheight=0>
1.6 www 209:
1.14 albertel 210: <script language="JavaScript">
211: function send()
212: {
1.6 www 213: this.document.server.elements.uname.value
214: =this.document.client.elements.uname.value;
215:
216: this.document.server.elements.udom.value
217: =this.document.client.elements.udom.value;
218:
1.33 www 219: this.document.server.elements.imagesuppress.value
1.36 www 220: =this.document.client.elements.imagesuppress.checked;
1.33 www 221:
222: this.document.server.elements.embedsuppress.value
1.36 www 223: =this.document.client.elements.embedsuppress.checked;
1.33 www 224:
1.34 www 225: this.document.server.elements.appletsuppress.value
1.36 www 226: =this.document.client.elements.appletsuppress.checked;
1.34 www 227:
1.33 www 228: this.document.server.elements.fontenhance.value
1.36 www 229: =this.document.client.elements.fontenhance.checked;
1.33 www 230:
231: this.document.server.elements.blackwhite.value
1.36 www 232: =this.document.client.elements.blackwhite.checked;
1.33 www 233:
1.35 www 234: this.document.server.elements.remember.value
1.36 www 235: =this.document.client.elements.remember.checked;
1.35 www 236:
1.6 www 237: uextkey=this.document.client.elements.uextkey.value;
238: lextkey=this.document.client.elements.lextkey.value;
239: initkeys();
240:
241: this.document.server.elements.upass.value
242: =crypted(this.document.client.elements.upass.value);
243:
244: this.document.server.submit();
1.19 bowersj2 245: return false;
1.6 www 246: }
1.14 albertel 247: </script>
1.16 www 248: ENDSCRIPT
1.6 www 249:
1.16 www 250: if ($fullgraph) {
251: $r->print(
252: '<table width="100%" cellpadding=0 cellspacing=0 border=0>');
253: }
1.6 www 254:
1.16 www 255: $r->print(<<ENDSERVERFORM);
1.14 albertel 256: <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">
1.33 www 257: <input type="hidden" name="logtoken" value="$logtoken" />
258: <input type="hidden" name="serverid" value="$lonhost" />
259: <input type="hidden" name="interface" value="$ENV{'form.interface'}" />
260: <input type="hidden" name="uname" value="" />
261: <input type="hidden" name="upass" value="" />
262: <input type="hidden" name="udom" value="" />
263: <input type="hidden" name="imagesuppress" value="" />
1.34 www 264: <input type="hidden" name="appletsuppress" value="" />
1.33 www 265: <input type="hidden" name="embedsuppress" value="" />
266: <input type="hidden" name="fontenhance" value="" />
267: <input type="hidden" name="blackwhite" value="" />
1.35 www 268: <input type="hidden" name="remember" value="" />
1.43 www 269: <input type="hidden" name="localpath" value="$ENV{'form.localpath'}" />
270: <input type="hidden" name="localres" value="$ENV{'form.localres'}" />
1.14 albertel 271: </form>
1.16 www 272: ENDSERVERFORM
273: if ($fullgraph) { $r->print(<<ENDTOP);
1.14 albertel 274: <!-- The LON-CAPA Header -->
275: <tr>
276:
277: <!-- Row 1 Columns 2-4 -->
1.29 www 278: <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="$pgbg"><img src="$img" border=0 alt="The Learning Online Network with CAPA" /></td>
1.14 albertel 279: </tr>
280:
281: <!-- The gray bar that starts the two table frames -->
282: <tr>
283:
284: <!-- Row 2 Column 1 -->
1.21 www 285: <td width=182 height=27 bgcolor="$sidebg"> </td>
1.14 albertel 286:
287: <!-- Row 2 Column 2 -->
1.19 bowersj2 288: <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 alt="" /></td>
1.14 albertel 289:
290: <!-- Row 2 Column 3 -->
1.19 bowersj2 291: <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" alt="" /></td>
1.14 albertel 292:
293: <!-- Row 2 Column 4 -->
1.19 bowersj2 294: <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 alt="" /></td>
1.14 albertel 295: </tr>
296: <tr>
297:
298: <!-- A cell that will hold the 'access' and 'about' buttons -->
299: <!-- Row 3 Column 1 -->
1.21 www 300: <td valign="top" height=60 align="center" bgcolor="$sidebg">
1.19 bowersj2 301: <a href="/adm/login?interface=textual"><img src="$iconpath/accessbutton.gif" border=0 alt="Accessibility Options" /></a>
1.14 albertel 302: <br />
1.19 bowersj2 303: <a href="/adm/about.html"><img src="$iconpath/aboutlon.gif" border=0 alt="About LON-CAPA" /></a>
1.14 albertel 304: </td>
305:
306: <!-- The shaded space between the two main columns -->
307: <!-- Row 3 Column 2 -->
1.19 bowersj2 308: <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>
1.14 albertel 309:
310: <!-- The right main column holding the large LON-CAPA logo-->
311: <!-- Rows 3-4 Column 3 -->
1.45 ! www 312: <td align="center" valign="top" width="100%" height="100%" bgcolor="$mainbg">
1.14 albertel 313: <center>
1.21 www 314: <img src="$logo" alt="" />
1.14 albertel 315: </center>
316: </td>
317:
318: <!-- Row 3 Column 4 -->
1.19 bowersj2 319: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>
1.14 albertel 320: </tr>
321: <tr>
322:
323: <!-- The entry form -->
324: <!-- Row 4 Column 1 -->
1.21 www 325: <td align="center" valign="middle" bgcolor="$sidebg">
1.16 www 326: ENDTOP
1.32 www 327: } else {
1.45 ! www 328: $r->print('<h1>The Learning<i>Online</i> Network with CAPA</h1><h2>Text-based Interface Login</h2>'.$announcements);
1.33 www 329: }
330: $r->print('<form name="client" onsubmit="return(send())">');
331: unless ($fullgraph) {
332: $r->print(<<ENDACCESSOPTIONS);
1.35 www 333: <h3>Select Accessibility Options</h3>
1.33 www 334: <input type="checkbox" name="imagesuppress" /> Suppress rendering of images<br />
1.34 www 335: <input type="checkbox" name="appletsuppress" /> Suppress Java applets<br />
1.33 www 336: <input type="checkbox" name="embedsuppress" /> Suppress rendering of embedded multimedia<br />
337: <input type="checkbox" name="fontenhance" /> Increase font size<br />
1.35 www 338: <input type="checkbox" name="blackwhite" /> Switch to black and white mode<br />
339: <p>If you have accessibility needs that are not addressed by this interface,
340: please
341: contact the system administrator at <tt>$sysadm</tt>.</p><br />
342: <input type="checkbox" name="remember" /> Remember these settings for next login<hr />
1.33 www 343: ENDACCESSOPTIONS
344: } else {
345: $r->print(<<ENDNOOPT);
346: <input type="hidden" name="imagesuppress" value="" />
347: <input type="hidden" name="embedsuppress" value="" />
1.34 www 348: <input type="hidden" name="appletsuppress" value="" />
1.33 www 349: <input type="hidden" name="fontenhance" value="" />
350: <input type="hidden" name="blackwhite" value="" />
1.35 www 351: <input type="hidden" name="remember" value="" />
1.33 www 352: ENDNOOPT
1.16 www 353: }
354: $r->print(<<ENDLOGIN);
1.14 albertel 355: <input type="hidden" name="lextkey" value="$lextkey">
356: <input type="hidden" name="uextkey" value="$uextkey">
357:
358: <!-- Start the sub-table for text and input alignment -->
359: <table border=0 cellspacing=0 cellpadding=0>
1.21 www 360: <tr><td bgcolor="$sidebg" colspan=2><img src="$iconpath/userauthentication.gif" alt="User Authentication" /></td></tr>
1.14 albertel 361: <tr>
1.21 www 362: <td bgcolor="$mainbg"><br /><font size=-1><b> User Name:</b></font></td>
1.30 www 363: <td bgcolor="$mainbg"><br /><input type="text" name="uname" size="10" value="$authusername" /></td>
1.14 albertel 364: </tr>
365: <tr>
1.21 www 366: <td bgcolor="$mainbg"><font size=-1><b> Password:</b></font></td>
367: <td bgcolor="$mainbg"><input type="password" name="upass" size="10" /></td>
1.14 albertel 368: </tr>
369: <tr>
1.21 www 370: <td bgcolor="$mainbg"><font size=-1><b> Domain:</b></font></td>
1.30 www 371: <td bgcolor="$mainbg"><input type="text" name="udom" size="10" value="$authdomain" /></td>
1.14 albertel 372: </tr>
373: <tr>
1.28 www 374: <td bgcolor="$mainbg"> <a href="/adm/loginproblems.html">Help</a></td>
375: <td bgcolor="$mainbg" valign="bottom" align="center">
1.14 albertel 376: <br />
1.19 bowersj2 377: <input type="submit" value="Log In" />
1.14 albertel 378: </td>
379: </tr>
380: </table>
381: <!-- End sub-table -->
382: </form>
1.16 www 383: ENDLOGIN
384: if ($fullgraph) {
385: $r->print(<<ENDDOCUMENT);
1.14 albertel 386: </td>
387:
388: <!-- Row 4 Column 2 -->
1.19 bowersj2 389: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>
1.45 ! www 390:
! 391: <!-- Row 4 Column 3 -->
! 392: <td bgcolor="$mainbg">$announcements</td>
1.14 albertel 393:
394: <!-- Row 4 Column 4 -->
1.19 bowersj2 395: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>
1.14 albertel 396: </tr>
397: <tr>
398:
399: <!-- Row 5 Column 1 -->
1.21 www 400: <td bgcolor="$sidebg" valign="middle" align="left">
1.14 albertel 401: <br />
402: <table border=0 cellspacing=0 cellpadding=0>
403: <tr>
1.21 www 404: <td bgcolor="$sidebg" align="left" valign="top">
1.14 albertel 405: <small><b> Domain: </b></small>
406: </td>
1.21 www 407: <td bgcolor="$sidebg" align="left" valign="top">
1.14 albertel 408: <small><tt> $domain</tt></small>
409: </td>
410: </tr>
411: <tr>
1.21 www 412: <td bgcolor="$sidebg" align="left" valign="top">
1.14 albertel 413: <small><b> Server: </b></small>
414: </td>
1.21 www 415: <td bgcolor="$sidebg" align="left" valign="top">
1.14 albertel 416: <small><tt> $lonhost ($role)</tt></small>
417: </td>
418: </tr>
419: <tr>
1.21 www 420: <td bgcolor="$sidebg" align="left" valign="top">
1.14 albertel 421: <small><b> Load: </b></small>
422: </td>
1.21 www 423: <td bgcolor="$sidebg" align="left" valign="top">
1.14 albertel 424: <small><tt> $loadpercent percent</tt></small>
1.42 albertel 425: </td>
426: </tr>
427: <tr>
428: <td bgcolor="$sidebg" align="left" valign="top">
429: <small><b> User Load: </b></small>
430: </td>
431: <td bgcolor="$sidebg" align="left" valign="top">
432: <small><tt> $userloadpercent percent</tt></small>
1.14 albertel 433: </td>
434: </tr>
435: </table>
436: <br />
437: <small>
438: <b> System Administration:</b><br />
439: <tt> $sysadm</tt><br />
440: <b> Server Administration:</b><br />
1.44 www 441: <tt> $servadm</tt><br /> <br />
442: $version
1.14 albertel 443: </small>
444: </td>
445:
446: <!-- Row 5 Column 2 -->
1.19 bowersj2 447: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>
1.14 albertel 448:
449: <!-- Row 5 Column 3 -->
1.21 www 450: <td width="100%" valign="bottom" bgcolor="$mainbg">
1.20 www 451: $domainlogo
452: </td>
1.14 albertel 453:
454: <!-- Row 5 Column 4 -->
1.19 bowersj2 455: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>
1.14 albertel 456: </tr>
457: <tr>
458:
459: <!-- Row 6 Column 1 -->
1.21 www 460: <td bgcolor="$sidebg"> </td>
1.14 albertel 461:
462: <!-- Row 6 Column 2 -->
1.19 bowersj2 463: <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" alt="" /></td>
1.14 albertel 464:
465: <!-- Row 6 Column 3 -->
1.19 bowersj2 466: <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" alt="" /></td>
1.14 albertel 467:
468: <!-- Row 6 Column 4 -->
1.19 bowersj2 469: <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" alt="" /></td>
1.14 albertel 470: </tr>
1.1 albertel 471: </table>
1.25 bowersj2 472:
473: <script>
474: // the if prevents the script error if the browser can't handle this
475: if ( document.client.uname ) { document.client.uname.focus(); }
476: </script>
1.14 albertel 477:
1.1 albertel 478: ENDDOCUMENT
1.16 www 479: }
480: $r->print('</body></html>');
1.1 albertel 481: return OK;
482: }
483:
484: 1;
485: __END__
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