loncom/auth/lonlogin.pm - view

File: [LON-CAPA] / loncom / auth / lonlogin.pm
Revision 1.46: download - view: text, annotated - select for diffs
Mon Aug 25 15:24:43 2003 UTC (20 years, 10 months ago) by www
Branches: MAIN
CVS tags: HEAD

Multidomain hosting: show expected domain design on login screen

1: # The LearningOnline Network 2: # Login Screen 3: # 4: # $Id: lonlogin.pm,v 1.46 2003/08/25 15:24:43 www Exp $ 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: # 28: # 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14, 29: # 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9, 30: # 1/17/01 Gerd Kortemeyer 31: # 32: # 2/7/02,2/8,2/12,2/14,2/15,2/19 Josh Brunskole 33: # 34: # 7/10/02 Jeremy Bowers 35: 36: package Apache::lonlogin; 37: 38: use strict; 39: use Apache::Constants qw(:common); 40: use Apache::File (); 41: use Apache::lonnet(); 42: use Apache::loncommon(); 43: 44: sub handler { 45: my $r = shift; 46: $r->content_type('text/html'); 47: &Apache::loncommon::no_cache($r); 48: $r->send_http_header; 49: return OK if $r->header_only; 50: 51: 52: &Apache::loncommon::get_unprocessed_cgi 53: ($ENV{'QUERY_STRING'}.'&'.$ENV{'request.querystring'}, 54: ['interface','username','domain','firsturl','localpath','localres']); 55: 56: # ----------------------------------------------------------- Process Interface 57: $ENV{'form.interface'}=~s/\W//g; 58: 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: 68: my $fullgraph=($ENV{'form.interface'} ne 'textual'); 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. 74: $r->dir_config('lonIconsURL'); 75: my $domain = $r->dir_config('lonDefDomain'); 76: if (($ENV{'form.domain'}) && 77: ($Apache::lonnet::domaindescription{$ENV{'form.domain'}})) { 78: $domain=$ENV{'form.domain'}; 79: } 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'); 86: my $include = $r->dir_config('lonIncludes'); 87: my $expire = $r->dir_config('lonExpire'); 88: my $version = $r->dir_config('lonVersion'); 89: 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 96: my $loadavg; 97: { 98: my $loadfile=Apache::File->new('/proc/loadavg'); 99: $loadavg=<$loadfile>; 100: } 101: $loadavg =~ s/\s.*//g; 102: my $loadpercent=100*$loadavg/$loadlim; 103: my $userloadpercent=&Apache::lonnet::userload(); 104: 105: # ------------------------------------------------------- Do the load balancing 106: my $otherserver='http://'.$ENV{'SERVER_NAME'}; 107: my $firsturl= 108: ($ENV{'request.firsturl'}?$ENV{'request.firsturl'}:$ENV{'form.firsturl'}); 109: # ---------------------------------------- Are we access server and overloaded? 110: if (($role eq 'access') && 111: (($userloadpercent>100.0)||($loadpercent>100.0))) { 112: $otherserver=Apache::lonnet::spareserver($loadpercent,$userloadpercent); 113: } 114: 115: # ----------------------------------------------------------- Get announcements 116: my $announcements=&Apache::lonnet::getannounce(); 117: # -------------------------------------------------------- Set login parameters 118: 119: my @hexstr=('0','1','2','3','4','5','6','7', 120: '8','9','a','b','c','d','e','f'); 121: my $lkey=''; 122: for (0..7) { 123: $lkey.=$hexstr[rand(15)]; 124: } 125: 126: my $ukey=''; 127: for (0..7) { 128: $ukey.=$hexstr[rand(15)]; 129: } 130: 131: my $lextkey=hex($lkey); 132: if ($lextkey>2147483647) { $lextkey-=4294967296; } 133: 134: my $uextkey=hex($ukey); 135: if ($uextkey>2147483647) { $uextkey-=4294967296; } 136: 137: # -------------------------------------------------------- Store away log token 138: my $logtoken=Apache::lonnet::reply( 139: 'tmpput:'.$ukey.$lkey.'&'.$firsturl, 140: $lonhost); 141: 142: # ------------------- If we cannot talk to ourselves, we are in serious trouble 143: 144: if ($logtoken eq 'con_lost') { 145: my $spares=''; 146: foreach (keys %Apache::lonnet::hostname) { 147: if ($_ ne $lonhost) { 148: $spares.='<br /><a href="http://'.$Apache::lonnet::hostname{$_}. 149: '/adm/login?domain='.$authdomain.'">'. 150: $Apache::lonnet::hostname{$_}.'</a>'; 151: if ($Apache::lonnet::spareid{$_}) { 152: $spares.=' (preferred)'; 153: } 154: } 155: } 156: $r->print(<<ENDTROUBLE); 157: <html> 158: <head><title>The LearningOnline Network with CAPA</title></head> 159: <body bgcolor="#FFFFFF"> 160: <img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" /> 161: <h3>This LON-CAPA server is temporarily not available for login</h3> 162: <p>Please attempt to login to one of the following servers:</p>$spares 163: <p>If the problem persists, please contact <tt>$servadm</tt>.</p> 164: </body> 165: </html> 166: ENDTROUBLE 167: return OK; 168: } 169: 170: # ----------------------------------------------- Apparently we are in business 171: 172: my $domainlogo=&Apache::loncommon::domainlogo(); 173: $servadm=~s/\,/\<br \/\>/g; 174: $sysadm=~s/\,/\<br \/\>/g; 175: 176: # --------------------------------------------------- Print login screen header 177: $r->print(<<ENDHEADER); 178: <html> 179: <head> 180: <meta HTTP-EQUIV="Refresh" CONTENT="$expire; url=/adm/roles" /> 181: <title>The LearningOnline Network with CAPA Login</title> 182: </head> 183: ENDHEADER 184: # ---------------------------------------------------- Serve out DES JavaScript 185: { 186: my $jsh=Apache::File->new($include."/londes.js"); 187: $r->print(<$jsh>); 188: } 189: 190: # ----------------------------------------------------------- Front page design 191: my $pgbg= 192: ($fullgraph?&Apache::loncommon::designparm('login.pgbg',$domain):'#FFFFFF'); 193: my $font= 194: ($fullgraph?&Apache::loncommon::designparm('login.font',$domain):'#000000'); 195: my $link= 196: ($fullgraph?&Apache::loncommon::designparm('login.link',$domain):'#0000FF'); 197: my $vlink= 198: ($fullgraph?&Apache::loncommon::designparm('login.vlink',$domain):'#0000FF'); 199: my $alink=&Apache::loncommon::designparm('login.alink',$domain); 200: my $mainbg= 201: ($fullgraph?&Apache::loncommon::designparm('login.mainbg',$domain):'#FFFFFF'); 202: my $sidebg= 203: ($fullgraph?&Apache::loncommon::designparm('login.sidebg',$domain):'#FFFFFF'); 204: my $logo=&Apache::loncommon::designparm('login.logo',$domain); 205: my $img=&Apache::loncommon::designparm('login.img',$domain); 206: 207: 208: # ---------------------------------------------------------- Serve rest of page 209: $r->print(<<ENDSCRIPT); 210: 211: <body bgcolor="$pgbg" text="$font" link="$link" vlink="$vlink" alink="$alink" 212: topmargin=0 leftmargin=0 marginwidth=0 marginheight=0> 213: 214: <script language="JavaScript"> 215: function send() 216: { 217: this.document.server.elements.uname.value 218: =this.document.client.elements.uname.value; 219: 220: this.document.server.elements.udom.value 221: =this.document.client.elements.udom.value; 222: 223: this.document.server.elements.imagesuppress.value 224: =this.document.client.elements.imagesuppress.checked; 225: 226: this.document.server.elements.embedsuppress.value 227: =this.document.client.elements.embedsuppress.checked; 228: 229: this.document.server.elements.appletsuppress.value 230: =this.document.client.elements.appletsuppress.checked; 231: 232: this.document.server.elements.fontenhance.value 233: =this.document.client.elements.fontenhance.checked; 234: 235: this.document.server.elements.blackwhite.value 236: =this.document.client.elements.blackwhite.checked; 237: 238: this.document.server.elements.remember.value 239: =this.document.client.elements.remember.checked; 240: 241: uextkey=this.document.client.elements.uextkey.value; 242: lextkey=this.document.client.elements.lextkey.value; 243: initkeys(); 244: 245: this.document.server.elements.upass.value 246: =crypted(this.document.client.elements.upass.value); 247: 248: this.document.server.submit(); 249: return false; 250: } 251: </script> 252: ENDSCRIPT 253: 254: if ($fullgraph) { 255: $r->print( 256: '<table width="100%" cellpadding=0 cellspacing=0 border=0>'); 257: } 258: 259: $r->print(<<ENDSERVERFORM); 260: <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top"> 261: <input type="hidden" name="logtoken" value="$logtoken" /> 262: <input type="hidden" name="serverid" value="$lonhost" /> 263: <input type="hidden" name="interface" value="$ENV{'form.interface'}" /> 264: <input type="hidden" name="uname" value="" /> 265: <input type="hidden" name="upass" value="" /> 266: <input type="hidden" name="udom" value="" /> 267: <input type="hidden" name="imagesuppress" value="" /> 268: <input type="hidden" name="appletsuppress" value="" /> 269: <input type="hidden" name="embedsuppress" value="" /> 270: <input type="hidden" name="fontenhance" value="" /> 271: <input type="hidden" name="blackwhite" value="" /> 272: <input type="hidden" name="remember" value="" /> 273: <input type="hidden" name="localpath" value="$ENV{'form.localpath'}" /> 274: <input type="hidden" name="localres" value="$ENV{'form.localres'}" /> 275: </form> 276: ENDSERVERFORM 277: if ($fullgraph) { $r->print(<<ENDTOP); 278:  279: <tr> 280: 281:  282: <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="$pgbg"><img src="$img" border=0 alt="The Learning Online Network with CAPA" /></td> 283: </tr> 284: 285:  286: <tr> 287: 288:  289: <td width=182 height=27 bgcolor="$sidebg"> </td> 290: 291:  292: <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 alt="" /></td> 293: 294:  295: <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" alt="" /></td> 296: 297:  298: <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 alt="" /></td> 299: </tr> 300: <tr> 301: 302:  303:  304: <td valign="top" height=60 align="center" bgcolor="$sidebg"> 305: <a href="/adm/login?interface=textual"><img src="$iconpath/accessbutton.gif" border=0 alt="Accessibility Options" /></a> 306: <br /> 307: <a href="/adm/about.html"><img src="$iconpath/aboutlon.gif" border=0 alt="About LON-CAPA" /></a> 308: </td> 309: 310:  311:  312: <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td> 313: 314:  315:  316: <td align="center" valign="top" width="100%" height="100%" bgcolor="$mainbg"> 317: <center> 318: <img src="$logo" alt="" /> 319: </center> 320: </td> 321: 322:  323: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td> 324: </tr> 325: <tr> 326: 327:  328:  329: <td align="center" valign="middle" bgcolor="$sidebg"> 330: ENDTOP 331: } else { 332: $r->print('<h1>The Learning<i>Online</i> Network with CAPA</h1><h2>Text-based Interface Login</h2>'.$announcements); 333: } 334: $r->print('<form name="client" onsubmit="return(send())">'); 335: unless ($fullgraph) { 336: $r->print(<<ENDACCESSOPTIONS); 337: <h3>Select Accessibility Options</h3> 338: <input type="checkbox" name="imagesuppress" /> Suppress rendering of images<br /> 339: <input type="checkbox" name="appletsuppress" /> Suppress Java applets<br /> 340: <input type="checkbox" name="embedsuppress" /> Suppress rendering of embedded multimedia<br /> 341: <input type="checkbox" name="fontenhance" /> Increase font size<br /> 342: <input type="checkbox" name="blackwhite" /> Switch to black and white mode<br /> 343: <p>If you have accessibility needs that are not addressed by this interface, 344: please 345: contact the system administrator at <tt>$sysadm</tt>.</p><br /> 346: <input type="checkbox" name="remember" /> Remember these settings for next login<hr /> 347: ENDACCESSOPTIONS 348: } else { 349: $r->print(<<ENDNOOPT); 350: <input type="hidden" name="imagesuppress" value="" /> 351: <input type="hidden" name="embedsuppress" value="" /> 352: <input type="hidden" name="appletsuppress" value="" /> 353: <input type="hidden" name="fontenhance" value="" /> 354: <input type="hidden" name="blackwhite" value="" /> 355: <input type="hidden" name="remember" value="" /> 356: ENDNOOPT 357: } 358: $r->print(<<ENDLOGIN); 359: <input type="hidden" name="lextkey" value="$lextkey"> 360: <input type="hidden" name="uextkey" value="$uextkey"> 361: 362:  363: <table border=0 cellspacing=0 cellpadding=0> 364: <tr><td bgcolor="$sidebg" colspan=2><img src="$iconpath/userauthentication.gif" alt="User Authentication" /></td></tr> 365: <tr> 366: <td bgcolor="$mainbg"><br /><font size=-1><b>   User Name:</b></font></td> 367: <td bgcolor="$mainbg"><br /><input type="text" name="uname" size="10" value="$authusername" /></td> 368: </tr> 369: <tr> 370: <td bgcolor="$mainbg"><font size=-1><b>   Password:</b></font></td> 371: <td bgcolor="$mainbg"><input type="password" name="upass" size="10" /></td> 372: </tr> 373: <tr> 374: <td bgcolor="$mainbg"><font size=-1><b>   Domain:</b></font></td> 375: <td bgcolor="$mainbg"><input type="text" name="udom" size="10" value="$authdomain" /></td> 376: </tr> 377: <tr> 378: <td bgcolor="$mainbg">   <a href="/adm/loginproblems.html">Help</a></td> 379: <td bgcolor="$mainbg" valign="bottom" align="center"> 380: <br /> 381: <input type="submit" value="Log In" /> 382: </td> 383: </tr> 384: </table> 385:  386: </form> 387: ENDLOGIN 388: if ($fullgraph) { 389: $r->print(<<ENDDOCUMENT); 390: </td> 391: 392:  393: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td> 394: 395:  396: <td bgcolor="$mainbg">$announcements</td> 397: 398:  399: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td> 400: </tr> 401: <tr> 402: 403:  404: <td bgcolor="$sidebg" valign="middle" align="left"> 405: <br /> 406: <table border=0 cellspacing=0 cellpadding=0> 407: <tr> 408: <td bgcolor="$sidebg" align="left" valign="top"> 409: <small><b>   Domain: </b></small> 410: </td> 411: <td bgcolor="$sidebg" align="left" valign="top"> 412: <small><tt> $domain</tt></small> 413: </td> 414: </tr> 415: <tr> 416: <td bgcolor="$sidebg" align="left" valign="top"> 417: <small><b>   Server: </b></small> 418: </td> 419: <td bgcolor="$sidebg" align="left" valign="top"> 420: <small><tt> $lonhost ($role)</tt></small> 421: </td> 422: </tr> 423: <tr> 424: <td bgcolor="$sidebg" align="left" valign="top"> 425: <small><b>   Load: </b></small> 426: </td> 427: <td bgcolor="$sidebg" align="left" valign="top"> 428: <small><tt> $loadpercent percent</tt></small> 429: </td> 430: </tr> 431: <tr> 432: <td bgcolor="$sidebg" align="left" valign="top"> 433: <small><b>   User Load: </b></small> 434: </td> 435: <td bgcolor="$sidebg" align="left" valign="top"> 436: <small><tt> $userloadpercent percent</tt></small> 437: </td> 438: </tr> 439: </table> 440: <br /> 441: <small> 442: <b>   System Administration:</b><br /> 443: <tt>      $sysadm</tt><br /> 444: <b>   Server Administration:</b><br /> 445: <tt>      $servadm</tt><br /> <br /> 446:    $version 447: </small> 448: </td> 449: 450:  451: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td> 452: 453:  454: <td width="100%" valign="bottom" bgcolor="$mainbg"> 455: $domainlogo 456: </td> 457: 458:  459: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td> 460: </tr> 461: <tr> 462: 463:  464: <td bgcolor="$sidebg"> </td> 465: 466:  467: <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" alt="" /></td> 468: 469:  470: <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" alt="" /></td> 471: 472:  473: <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" alt="" /></td> 474: </tr> 475: </table> 476: 477: <script> 478: // the if prevents the script error if the browser can't handle this 479: if ( document.client.uname ) { document.client.uname.focus(); } 480: </script> 481: 482: ENDDOCUMENT 483: } 484: $r->print('</body></html>'); 485: return OK; 486: } 487: 488: 1; 489: __END__