loncom/auth/lonroles.pm - view

File: [LON-CAPA] / loncom / auth / lonroles.pm
Revision 1.185: download - view: text, annotated - select for diffs
Mon Mar 10 23:47:24 2008 UTC (16 years, 2 months ago) by raeburn
Branches: MAIN
CVS tags: HEAD

- Improving ease of use (cf. Moodle).

Inline navigation includes dropdown to change to a different role in the course.
Course Coordinator - can switch to any role currently used in the course.
Other users - can switch to any other course roles assigned to them.

Work in progress.
- Needs additional dropdown for section context.
- Needs to maintain display of encrypted URLs as unencrypted when switching into CC role.

1: # The LearningOnline Network with CAPA 2: # User Roles Screen 3: # 4: # $Id: lonroles.pm,v 1.185 2008/03/10 23:47:24 raeburn 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: ### 29: 30: package Apache::lonroles; 31: 32: use strict; 33: use Apache::lonnet; 34: use Apache::lonuserstate(); 35: use Apache::Constants qw(:common); 36: use Apache::File(); 37: use Apache::lonmenu; 38: use Apache::loncommon; 39: use Apache::lonhtmlcommon; 40: use Apache::lonannounce; 41: use Apache::lonlocal; 42: use Apache::lonpageflip(); 43: use Apache::lonnavdisplay(); 44: use GDBM_File; 45: use LONCAPA qw(:DEFAULT :match); 46: 47: 48: sub redirect_user { 49: my ($r,$title,$url,$msg,$launch_nav) = @_; 50: $msg = $title if (! defined($msg)); 51: &Apache::loncommon::content_type($r,'text/html'); 52: &Apache::loncommon::no_cache($r); 53: $r->send_http_header; 54: my $swinfo=&Apache::lonmenu::rawconfig(); 55: my $navwindow; 56: if ($launch_nav eq 'on') { 57: $navwindow.=&Apache::lonnavdisplay::launch_win('now',undef,undef, 58: ($url =~ m-^/adm/whatsnew-)); 59: } else { 60: $navwindow.=&Apache::lonnavmaps::close(); 61: } 62: my $start_page = &Apache::loncommon::start_page('Switching Role',undef, 63: {'redirect' => [1,$url],}); 64: my $end_page = &Apache::loncommon::end_page(); 65: 66: # Note to style police: 67: # This must only replace the spaces, nothing else, or it bombs elsewhere. 68: $url=~s/ /\%20/g; 69: $r->print(<<ENDREDIR); 70: $start_page 71: <script type="text/javascript"> 72: $swinfo 73: </script> 74: $navwindow 75: <h1>$msg</h1> 76: $end_page 77: ENDREDIR 78: return; 79: } 80: 81: sub error_page { 82: my ($r,$error,$dest)=@_; 83: &Apache::loncommon::content_type($r,'text/html'); 84: &Apache::loncommon::no_cache($r); 85: $r->send_http_header; 86: return OK if $r->header_only; 87: $r->print(&Apache::loncommon::start_page('Problems during Course Initialization'). 88: '<script type="text/javascript">'. 89: &Apache::lonmenu::rawconfig().'</script>'. 90: '<p>'.&mt('The following problems occurred:'). 91: $error. 92: '</p><br /><a href="'.$dest.'">'.&mt('Continue').'</a>'. 93: &Apache::loncommon::end_page()); 94: } 95: 96: sub handler { 97: 98: my $r = shift; 99: 100: my $now=time; 101: my $then=$env{'user.login.time'}; 102: my $envkey; 103: my %dcroles = (); 104: my $numdc = &check_fordc(\%dcroles,$then); 105: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}); 106: 107: # ================================================================== Roles Init 108: if ($env{'form.selectrole'}) { 109: if ($env{'form.newrole'}) { 110: $env{'form.'.$env{'form.newrole'}}=1; 111: } 112: if ($env{'request.course.id'}) { 113: # Check if user is CC trying to select a course role 114: if ($env{'form.switchrole'}) { 115: if (!defined($env{'user.role.'.$env{'form.switchrole'}})) { 116: &adhoc_course_role($then); 117: } 118: } 119: my %temp=('logout_'.$env{'request.course.id'} => time); 120: &Apache::lonnet::put('email_status',\%temp); 121: &Apache::lonnet::delenv('user.state.'.$env{'request.course.id'}); 122: } 123: &Apache::lonnet::appenv("request.course.id" => '', 124: "request.course.fn" => '', 125: "request.course.uri" => '', 126: "request.course.sec" => '', 127: "request.role" => 'cm', 128: "request.role.adv" => $env{'user.adv'}, 129: "request.role.domain" => $env{'user.domain'}); 130: # Check if user is a DC trying to enter a course or author space and needs privs to be created 131: if ($numdc > 0) { 132: foreach my $envkey (keys %env) { 133: # Is this an ad-hoc CC-role? 134: if (my ($domain,$coursenum) = 135: ($envkey =~ m-^form\.cc\./($match_domain)/($match_courseid)$-)) { 136: if ($dcroles{$domain}) { 137: &check_privs($domain,$coursenum,$then,$now,'cc'); 138: } 139: last; 140: } 141: # Is this a recent ad-hoc CA-role? 142: if (my ($domain,$user) = 143: ($envkey =~ m-^form\.ca\./($match_domain)/($match_username)$-)) { 144: if (($dcroles{$domain}) && (&is_author_homeserver($user,$domain))) { 145: &check_privs($domain,$user,$then,$now,'ca'); 146: } else { 147: delete($env{$envkey}); 148: } 149: last; 150: } 151: # Is this a new ad-hoc CA-role? 152: if (my ($domain) = 153: ($envkey =~ m-^form\.adhocca\./($match_domain)$-)) { 154: if ($dcroles{$domain}) { 155: my $user=$env{'form.adhoccauname.'.$domain}; 156: if (!$user) { $user=$env{'form.adhoccaunamerecent.'.$domain} }; 157: if (($user) && ($user=~/$match_username/) && (&is_author_homeserver($user,$domain))) { 158: &check_privs($domain,$user,$then,$now,'ca'); 159: $env{'form.ca./'.$domain.'/'.$user}=1; 160: } 161: } 162: last; 163: } 164: } 165: } 166: 167: foreach $envkey (keys %env) { 168: next if ($envkey!~/^user\.role\./); 169: my ($where,$trolecode,$role,$tstatus,$tend,$tstart); 170: &role_status($envkey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend); 171: if ($env{'form.'.$trolecode}) { 172: if ($tstatus eq 'is') { 173: $where=~s/^\///; 174: my ($cdom,$cnum,$csec)=split(/\//,$where); 175: # check for course groups 176: my %coursegroups = &Apache::lonnet::get_active_groups( 177: $env{'user.domain'},$env{'user.name'},$cdom, $cnum); 178: my $cgrps = join(':',keys(%coursegroups)); 179: 180: # store role if recent_role list being kept 181: if ($env{'environment.recentroles'}) { 182: my %frozen_roles = 183: &Apache::lonhtmlcommon::get_recent_frozen('roles',$env{'environment.recentrolesn'}); 184: &Apache::lonhtmlcommon::store_recent('roles', 185: $trolecode,' ',$frozen_roles{$trolecode}); 186: } 187: 188: 189: # check for keyed access 190: if (($role eq 'st') && 191: ($env{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) { 192: # who is key authority? 193: my $authdom=$cdom; 194: my $authnum=$cnum; 195: if ($env{'course.'.$cdom.'_'.$cnum.'.keyauth'}) { 196: ($authnum,$authdom)= 197: split(/:/,$env{'course.'.$cdom.'_'.$cnum.'.keyauth'}); 198: } 199: # check with key authority 200: unless (&Apache::lonnet::validate_access_key( 201: $env{'environment.key.'.$cdom.'_'.$cnum}, 202: $authdom,$authnum)) { 203: # there is no valid key 204: if ($env{'form.newkey'}) { 205: # student attempts to register a new key 206: &Apache::loncommon::content_type($r,'text/html'); 207: &Apache::loncommon::no_cache($r); 208: $r->send_http_header; 209: my $swinfo=&Apache::lonmenu::rawconfig(); 210: my $start_page=&Apache::loncommon::start_page 211: ('Verifying Access Key to Unlock this Course'); 212: my $end_page=&Apache::loncommon::end_page(); 213: my $buttontext=&mt('Enter Course'); 214: my $message=&mt('Successfully registered key'); 215: my $assignresult= 216: &Apache::lonnet::assign_access_key( 217: $env{'form.newkey'}, 218: $authdom,$authnum, 219: $cdom,$cnum, 220: $env{'user.domain'}, 221: $env{'user.name'}, 222: 'Assigned from '.$ENV{'REMOTE_ADDR'}.' at '.localtime().' for '. 223: $trolecode); 224: unless ($assignresult eq 'ok') { 225: $assignresult=~s/^error\:\s*//; 226: $message=&mt($assignresult). 227: '<br /><a href="/adm/logout">'. 228: &mt('Logout').'</a>'; 229: $buttontext=&mt('Re-Enter Key'); 230: } 231: $r->print(<<ENDENTEREDKEY); 232: $start_page 233: <script type="text/javascript"> 234: $swinfo 235: </script> 236: <form method="post"> 237: <input type="hidden" name="selectrole" value="1" /> 238: <input type="hidden" name="$trolecode" value="1" /> 239: <font size="+2">$message</font><br /> 240: <input type="submit" value="$buttontext" /> 241: </form> 242: $end_page 243: ENDENTEREDKEY 244: return OK; 245: } else { 246: # print form to enter a new key 247: &Apache::loncommon::content_type($r,'text/html'); 248: &Apache::loncommon::no_cache($r); 249: $r->send_http_header; 250: my $swinfo=&Apache::lonmenu::rawconfig(); 251: my $start_page=&Apache::loncommon::start_page 252: ('Enter Access Key to Unlock this Course'); 253: my $end_page=&Apache::loncommon::end_page(); 254: $r->print(<<ENDENTERKEY); 255: $start_page 256: <script type="text/javascript"> 257: $swinfo 258: </script> 259: <form method="post"> 260: <input type="hidden" name="selectrole" value="1" /> 261: <input type="hidden" name="$trolecode" value="1" /> 262: <input type="text" size="20" name="newkey" value="$env{'form.newkey'}" /> 263: <input type="submit" value="Enter key" /> 264: </form> 265: $end_page 266: ENDENTERKEY 267: return OK; 268: } 269: } 270: } 271: &Apache::lonnet::log($env{'user.domain'}, 272: $env{'user.name'}, 273: $env{'user.home'}, 274: "Role ".$trolecode); 275: 276: &Apache::lonnet::appenv( 277: 'request.role' => $trolecode, 278: 'request.role.domain' => $cdom, 279: 'request.course.sec' => $csec, 280: 'request.course.groups' => $cgrps); 281: my $tadv=0; 282: 283: if (($cnum) && ($role ne 'ca') && ($role ne 'aa')) { 284: my $msg; 285: my ($furl,$ferr)= 286: &Apache::lonuserstate::readmap($cdom.'/'.$cnum); 287: if (($env{'form.orgurl'}) && 288: ($env{'form.orgurl'}!~/^\/adm\/flip/)) { 289: my $dest=$env{'form.orgurl'}; 290: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; } 291: &Apache::lonnet::appenv('request.role.adv'=>$tadv); 292: if (($ferr) && ($tadv)) { 293: &error_page($r,$ferr,$dest); 294: } else { 295: $r->internal_redirect($dest); 296: } 297: return OK; 298: } else { 299: if (!$env{'request.course.id'}) { 300: &Apache::lonnet::appenv( 301: "request.course.id" => $cdom.'_'.$cnum); 302: $furl='/adm/roles?tryagain=1'; 303: $msg= 304: '<h1><span class="LC_error">'. 305: &mt('Could not initialize [_1] at this time.', 306: $env{'course.'.$cdom.'_'.$cnum.'.description'}). 307: '</span></h1><h3>'.&mt('Please try again.').'</h3>'.$ferr; 308: } 309: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; } 310: &Apache::lonnet::appenv('request.role.adv'=>$tadv); 311: 312: if (($ferr) && ($tadv)) { 313: &error_page($r,$ferr,$furl); 314: } else { 315: # Check to see if the user is a CC entering a course 316: # for the first time 317: my (undef, undef, $role, $courseid) = split(/\./, $envkey); 318: if (substr($courseid, 0, 1) eq '/') { 319: $courseid = substr($courseid, 1); 320: } 321: $courseid =~ s/\//_/; 322: if ($role eq 'cc' && $env{'course.' . $courseid . 323: '.course.helper.not.run'}) { 324: $furl = "/adm/helper/course.initialization.helper"; 325: # Send the user to the course they selected 326: } elsif ($env{'request.course.id'}) { 327: if ($env{'form.destinationurl'}) { 328: my $dest = $env{'form.destinationurl'}; 329: &redirect_user($r,&mt('Entering [_1]', 330: $env{'course.'.$courseid.'.description'}), 331: $dest,$msg, 332: $env{'environment.remotenavmap'}); 333: return OK; 334: } 335: if (&Apache::lonnet::allowed('whn', 336: $env{'request.course.id'}) 337: || &Apache::lonnet::allowed('whn', 338: $env{'request.course.id'}.'/' 339: .$env{'request.course.sec'}) 340: ) { 341: my $startpage = &courseloadpage($courseid); 342: unless ($startpage eq 'firstres') { 343: $msg = &mt('Entering [_1] ....', 344: $env{'course.'.$courseid.'.description'}); 345: &redirect_user($r,&mt('New in course'), 346: '/adm/whatsnew?refpage=start',$msg, 347: $env{'environment.remotenavmap'}); 348: return OK; 349: } 350: } 351: } 352: # Are we allowed to look at the first resource? 353: if ($furl !~ m|^/adm/|) { 354: # Guess not ... 355: $furl=&Apache::lonpageflip::first_accessible_resource(); 356: } 357: $msg = &mt('Entering [_1] ...', 358: $env{'course.'.$courseid.'.description'}); 359: &redirect_user($r,&mt('Entering [_1]', 360: $env{'course.'.$courseid.'.description'}), 361: $furl,$msg, 362: $env{'environment.remotenavmap'}); 363: } 364: return OK; 365: } 366: } 367: # 368: # Send the user to the construction space they selected 369: if ($role =~ /^(au|ca|aa)$/) { 370: my $redirect_url = '/priv/'; 371: if ($role eq 'au') { 372: $redirect_url.=$env{'user.name'}; 373: } else { 374: $where =~ /\/(.*)$/; 375: $redirect_url .= $1; 376: } 377: $redirect_url .= '/'; 378: &redirect_user($r,&mt('Entering Construction Space'), 379: $redirect_url); 380: return OK; 381: } 382: if ($role eq 'dc') { 383: my $redirect_url = '/adm/menu/'; 384: &redirect_user($r,&mt('Loading Domain Coordinator Menu'), 385: $redirect_url); 386: return OK; 387: } 388: } 389: } 390: } 391: } 392: 393: 394: # =============================================================== No Roles Init 395: 396: &Apache::loncommon::content_type($r,'text/html'); 397: &Apache::loncommon::no_cache($r); 398: $r->send_http_header; 399: return OK if $r->header_only; 400: 401: my $swinfo=&Apache::lonmenu::rawconfig(); 402: my $start_page=&Apache::loncommon::start_page('User Roles'); 403: my $standby=&mt('Role selected. Please stand by.'); 404: $standby=~s/\n/\\n/g; 405: my $noscript='<span class="LC_error">'.&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.').'<br />'.&mt('As this is not the case, most functionality in the system will be unavailable.').'</span><br />'; 406: 407: $r->print(<<ENDHEADER); 408: $start_page 409: <br /> 410: <noscript> 411: $noscript 412: </noscript> 413: <script type="text/javascript"> 414: $swinfo 415: window.focus(); 416: 417: active=true; 418: 419: function enterrole (thisform,rolecode,buttonname) { 420: if (active) { 421: active=false; 422: document.title='$standby'; 423: window.status='$standby'; 424: thisform.newrole.value=rolecode; 425: thisform.submit(); 426: } else { 427: alert('$standby'); 428: } 429: } 430: </script> 431: ENDHEADER 432: 433: # ------------------------------------------ Get Error Message from Environment 434: 435: my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$env{'user.error.msg'}); 436: if ($env{'user.error.msg'}) { 437: $r->log_reason( 438: "$msg for $env{'user.name'} domain $env{'user.domain'} access $priv",$fn); 439: } 440: 441: # ------------------------------------------------- Can this user re-init, etc? 442: 443: my $advanced=$env{'user.adv'}; 444: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']); 445: my $tryagain=$env{'form.tryagain'}; 446: 447: # -------------------------------------------------------- Generate Page Output 448: # --------------------------------------------------------------- Error Header? 449: if ($error) { 450: $r->print("<h1>LON-CAPA Access Control</h1>"); 451: $r->print("<hr /><pre>"); 452: if ($priv ne '') { 453: $r->print("Access : ".&Apache::lonnet::plaintext($priv)."\n"); 454: } 455: if ($fn ne '') { 456: $r->print("Resource: ".&Apache::lonenc::check_encrypt($fn)."\n"); 457: } 458: if ($msg ne '') { 459: $r->print("Action : $msg\n"); 460: } 461: $r->print("</pre><hr />"); 462: my $url=$fn; 463: my $last; 464: if (tie(my %hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db', 465: &GDBM_READER(),0640)) { 466: $last=$hash{'last_known'}; 467: untie(%hash); 468: } 469: if ($last) { $fn.='?symb='.&escape($last); } 470: 471: &Apache::londocs::changewarning($r,undef,'You have modified your course recently, [_1] may fix this access problem.', 472: &Apache::lonenc::check_encrypt($fn)); 473: } else { 474: if ($env{'user.error.msg'}) { 475: $r->print( 476: '<h3><span class="LC_error">'. 477: &mt('You need to choose another user role or enter a specific course for this function').'</span></h3>'); 478: } 479: } 480: # -------------------------------------------------------- Choice or no choice? 481: if ($nochoose) { 482: $r->print("<h2>".&mt('Sorry ...')."</h2>\n<span class='LC_error'>". 483: &mt('This action is currently not authorized.').'</span>'. 484: &Apache::loncommon::end_page()); 485: return OK; 486: } else { 487: if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) { 488: $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'}; 489: } 490: $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">'); 491: $r->print('<input type="hidden" name="orgurl" value="'.$fn.'" />'); 492: $r->print('<input type="hidden" name="selectrole" value="1" />'); 493: $r->print('<input type="hidden" name="newrole" value="" />'); 494: } 495: if ($env{'user.adv'}) { 496: $r->print( 497: '<br /><span class="LC_rolesinfo"><label>'.&mt('Show all roles').': <input type="checkbox" name="showall"'); 498: if ($env{'form.showall'}) { $r->print(' checked="checked" '); } 499: $r->print(' /></label><input type="submit" value="'.&mt('Display').'" /></span>'); 500: } 501: 502: my (%roletext,%sortrole,%roleclass); 503: my $countactive=0; 504: my $inrole=0; 505: my $possiblerole=''; 506: foreach $envkey (sort keys %env) { 507: my $button = 1; 508: my $switchserver=''; 509: my $roletext; 510: my $sortkey; 511: if ($envkey=~/^user\.role\./) { 512: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend,$tfont); 513: &role_status($envkey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend); 514: next if (!defined($role) || $role eq '' || $role =~ /^gr/); 515: $tremark=''; 516: $tpstart=' '; 517: $tpend=' '; 518: $tfont='#000000'; 519: if ($tstart) { 520: $tpstart=&Apache::lonlocal::locallocaltime($tstart); 521: } 522: if ($tend) { 523: $tpend=&Apache::lonlocal::locallocaltime($tend); 524: } 525: if ($env{'request.role'} eq $trolecode) { 526: $tstatus='selected'; 527: } 528: my $tbg; 529: if (($tstatus eq 'is') 530: || ($tstatus eq 'selected') 531: || ($tstatus eq 'will') 532: || ($tstatus eq 'future') 533: || ($env{'form.showall'})) { 534: if ($tstatus eq 'is') { 535: $tbg='#77FF77'; 536: $tfont='#003300'; 537: $possiblerole=$trolecode; 538: $countactive++; 539: } elsif ($tstatus eq 'future') { 540: $tbg='#FFFF77'; 541: $button=0; 542: } elsif ($tstatus eq 'will') { 543: $tbg='#FFAA77'; 544: $tremark.=&mt('Active at next login. '); 545: } elsif ($tstatus eq 'expired') { 546: $tbg='#FF7777'; 547: $tfont='#330000'; 548: $button=0; 549: } elsif ($tstatus eq 'will_not') { 550: $tbg='#AAFF77'; 551: $tremark.=&mt('Expired after logout. '); 552: } elsif ($tstatus eq 'selected') { 553: $tbg='#11CC55'; 554: $tfont='#002200'; 555: $inrole=1; 556: $countactive++; 557: $tremark.=&mt('Currently selected. '); 558: } 559: my $trole; 560: if ($role =~ /^cr\//) { 561: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role); 562: if ($tremark) { $tremark.='<br />'; } 563: $tremark.=&mt('Defined by ').$rauthor. 564: &mt(' at ').$rdomain.'.'; 565: } 566: $trole=Apache::lonnet::plaintext($role); 567: my $ttype; 568: my $twhere; 569: my ($tdom,$trest,$tsection)= 570: split(/\//,Apache::lonnet::declutter($where)); 571: # First, Co-Authorship roles 572: if (($role eq 'ca') || ($role eq 'aa')) { 573: my $home = &Apache::lonnet::homeserver($trest,$tdom); 574: my $allowed=0; 575: my @ids=&Apache::lonnet::current_machine_ids(); 576: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } } 577: if (!$allowed) { 578: $button=0; 579: $switchserver='otherserver='.$home.'&role='.$trolecode; 580: } 581: #next if ($home eq 'no_host'); 582: $home = &Apache::lonnet::hostname($home); 583: $ttype='Construction Space'; 584: $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain'). 585: ': '.$tdom.'<br />'. 586: ' '.&mt('Server').': '.$home; 587: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca'; 588: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/'); 589: $sortkey=$role."$trest:$tdom"; 590: } elsif ($role eq 'au') { 591: # Authors 592: my $home = &Apache::lonnet::homeserver 593: ($env{'user.name'},$env{'user.domain'}); 594: my $allowed=0; 595: my @ids=&Apache::lonnet::current_machine_ids(); 596: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } } 597: if (!$allowed) { 598: $button=0; 599: $switchserver='otherserver='.$home.'&role='.$trolecode; 600: } 601: #next if ($home eq 'no_host'); 602: $home = &Apache::lonnet::hostname($home); 603: $ttype='Construction Space'; 604: $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server'). 605: ': '.$home; 606: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca'; 607: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$env{'user.name'}.'/'); 608: $sortkey=$role; 609: } elsif ($trest) { 610: my $tcourseid=$tdom.'_'.$trest; 611: $ttype = &Apache::loncommon::course_type($tcourseid); 612: $trole = &Apache::lonnet::plaintext($role,$ttype); 613: if ($env{'course.'.$tcourseid.'.description'}) { 614: $twhere=$env{'course.'.$tcourseid.'.description'}; 615: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey; 616: unless ($twhere eq &mt('Currently not available')) { 617: $twhere.=' <font size="-2">'. 618: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont). 619: '</font>'; 620: } 621: } else { 622: my %newhash=&Apache::lonnet::coursedescription($tcourseid); 623: if (%newhash) { 624: $sortkey=$role."\0".$tdom."\0".$newhash{'description'}. 625: "\0".$envkey; 626: $twhere=$newhash{'description'}. 627: ' <font size="-2">'. 628: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont). 629: '</font>'; 630: $ttype = $newhash{'type'}; 631: $trole = &Apache::lonnet::plaintext($role,$ttype); 632: } else { 633: $twhere=&mt('Currently not available'); 634: $env{'course.'.$tcourseid.'.description'}=$twhere; 635: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey; 636: $ttype = 'Unavailable'; 637: } 638: } 639: if ($tsection) { 640: $twhere.='<br />'.&mt('Section').': '.$tsection; 641: } 642: if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; } 643: } elsif ($tdom) { 644: $ttype='Domain'; 645: $twhere=$tdom; 646: $sortkey=$role.$twhere; 647: } else { 648: $ttype='System'; 649: $twhere=&mt('system wide'); 650: $sortkey=$role.$twhere; 651: } 652: $roletext.=&build_roletext($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$tfont,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver); 653: $roletext{$envkey}=$roletext; 654: if (!$sortkey) {$sortkey=$twhere."\0".$envkey;} 655: $sortrole{$sortkey}=$envkey; 656: $roleclass{$envkey}=$ttype; 657: } 658: } 659: } 660: # No active roles 661: if ($countactive==0) { 662: if ($inrole) { 663: $r->print('<h2>'.&mt('Currently no additional roles or courses').'</h2>'); 664: } else { 665: $r->print('<h2>'.&mt('Currently no active roles or courses').'</h2>'); 666: } 667: $r->print('</form>'.&Apache::loncommon::end_page()); 668: return OK; 669: # Is there only one choice? 670: } elsif (($countactive==1) && ($env{'request.role'} eq 'cm')) { 671: $r->print('<h3>'.&mt('Please stand by.').'</h3>'. 672: '<input type="hidden" name="'.$possiblerole.'" value="1" />'. 673: '<noscript><br /><input type="submit" name="submit" value="'.&mt('Continue').'" /></noscript>'); 674: $r->print("</form>\n"); 675: $r->rflush(); 676: $r->print('<script type="text/javascript">document.forms.rolechoice.submit();</script>'); 677: $r->print(&Apache::loncommon::end_page()); 678: return OK; 679: } 680: # More than one possible role 681: # ----------------------------------------------------------------------- Table 682: unless ((!&Apache::lonmenu::show_course()) || ($nochoose)) { 683: $r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n"); 684: } 685: $r->print('<br /><table id="LC_rolesmenu"><tr>'); 686: unless ($nochoose) { $r->print('<th> </th>'); } 687: $r->print('<th>'.&mt('User Role').'</th><th>'.&mt('Extent'). 688: '</th><th>'.&mt('Start').'</th><th>'.&mt('End').'</th></tr>'."\n"); 689: my $doheaders=-1; 690: foreach my $type ('Domain','Construction Space','Course','Unavailable','System') { 691: my $haverole=0; 692: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) { 693: if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) { 694: $haverole=1; 695: } 696: } 697: if ($haverole) { $doheaders++; } 698: } 699: 700: if ($env{'environment.recentroles'}) { 701: my %recent_roles = 702: &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'}); 703: my $output=''; 704: foreach (sort(keys(%recent_roles))) { 705: if (defined($roletext{'user.role.'.$_})) { 706: $output.=$roletext{'user.role.'.$_}; 707: if ($_ =~ m-dc\./($match_domain)/- 708: && $dcroles{$1}) { 709: $output .= &allcourses_row($1,'recent'). 710: &allcoauthors_row($1,'recent'); 711: } 712: } elsif ($numdc > 0) { 713: unless ($_ =~/^error\:/) { 714: $output.=&display_cc_role('user.role.'.$_); 715: } 716: } 717: } 718: if ($output) { 719: $r->print("<tr><td align='center' colspan='5'><font face='arial'>". 720: &mt('Recent Roles')."</font></td>"); 721: $r->print($output); 722: $r->print("</tr>"); 723: $doheaders ++; 724: } 725: } 726: 727: if ($numdc > 0) { 728: $r->print(&coursepick_jscript()); 729: $r->print(&Apache::loncommon::coursebrowser_javascript()); 730: } 731: foreach my $type ('Construction Space','Domain','Course','Unavailable','System') { 732: my $output; 733: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) { 734: if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) { 735: $output.=$roletext{$sortrole{$which}}; 736: if ($sortrole{$which} =~ m-dc\./($match_domain)/-) { 737: if ($dcroles{$1}) { 738: $output .= &allcourses_row($1,''). 739: &allcoauthors_row($1,''); 740: } 741: } 742: } 743: } 744: if ($output) { 745: if ($doheaders > 0) { 746: $r->print("<tr>". 747: "<td align='center' colspan='5'><font face='arial'>".&mt($type)."</font></td></tr>"); 748: } 749: $r->print($output); 750: } 751: } 752: my $tremark=''; 753: my $tfont='#003300'; 754: if ($env{'request.role'} eq 'cm') { 755: $r->print('<tr bgcolor="#11CC55">'); 756: $tremark=&mt('Currently selected. '); 757: $tfont='#002200'; 758: } else { 759: $r->print('<tr bgcolor="#77FF77">'); 760: } 761: unless ($nochoose) { 762: if ($env{'request.role'} ne 'cm') { 763: $r->print('<td><input type="submit" value="'. 764: &mt('Select').'" name="cm"></td>'); 765: } else { 766: $r->print('<td> </td>'); 767: } 768: } 769: $r->print('<td colspan="3"><font color="'.$tfont.'"><span class="LC_rolesinfo">'.&mt('No role specified'). 770: '</font></span></td><td><font color="'.$tfont.'">'.$tremark. 771: ' </font></td></tr>'."\n"); 772: 773: $r->print('</table>'); 774: unless ($nochoose) { 775: $r->print("</form>\n"); 776: } 777: # ------------------------------------------------------------ Privileges Info 778: if (($advanced) && (($env{'user.error.msg'}) || ($error))) { 779: $r->print('<hr /><h2>Current Privileges</h2>'); 780: $r->print(&privileges_info()); 781: } 782: $r->print(&Apache::lonnet::getannounce()); 783: if ($advanced) { 784: $r->print('<p><small><i>This is LON-CAPA '. 785: $r->dir_config('lonVersion').'</i><br />'. 786: '<a href="/adm/logout">'.&mt('Logout').'</a></small></p>'); 787: } 788: $r->print(&Apache::loncommon::end_page()); 789: return OK; 790: } 791: 792: sub privileges_info { 793: my ($which) = @_; 794: my $output; 795: 796: $which ||= $env{'request.role'}; 797: 798: foreach my $envkey (sort(keys(%env))) { 799: next if ($envkey!~/^user\.priv\.\Q$which\E\.(.*)/); 800: 801: my $where=$1; 802: my $ttype; 803: my $twhere; 804: my (undef,$tdom,$trest,$tsec)=split(m{/},$where); 805: if ($trest) { 806: if ($env{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') { 807: $ttype='Construction Space'; 808: $twhere='User: '.$trest.', Domain: '.$tdom; 809: } else { 810: $ttype= &Apache::loncommon::course_type($tdom.'_'.$trest); 811: $twhere=$env{'course.'.$tdom.'_'.$trest.'.description'}; 812: if ($tsec) { 813: my $sec_type = 'Section'; 814: if (exists($env{"user.role.gr.$where"})) { 815: $sec_type = 'Group'; 816: } 817: $twhere.=' ('.$sec_type.': '.$tsec.')'; 818: } 819: } 820: } elsif ($tdom) { 821: $ttype='Domain'; 822: $twhere=$tdom; 823: } else { 824: $ttype='System'; 825: $twhere='/'; 826: } 827: $output .= "\n<h3>".$ttype.': '.$twhere.'</h3>'."\n<ul>"; 828: foreach my $priv (sort(split(/:/,$env{$envkey}))) { 829: next if (!$priv); 830: 831: my ($prv,$restr)=split(/\&/,$priv); 832: my $trestr=''; 833: if ($restr ne 'F') { 834: $trestr.=' ('. 835: join(', ', 836: map { &Apache::lonnet::plaintext($_) } 837: (split('',$restr))).') '; 838: } 839: $output .= "\n\t". 840: '<li>'.&Apache::lonnet::plaintext($prv).$trestr.'</li>'; 841: } 842: $output .= "\n".'</ul>'; 843: } 844: return $output; 845: } 846: 847: sub role_status { 848: my ($rolekey,$then,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_; 849: my @pwhere = (); 850: if (exists($env{$rolekey}) && $env{$rolekey} ne '') { 851: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey); 852: unless (!defined($$role) || $$role eq '') { 853: $$where=join('.',@pwhere); 854: $$trolecode=$$role.'.'.$$where; 855: ($$tstart,$$tend)=split(/\./,$env{$rolekey}); 856: $$tstatus='is'; 857: if ($$tstart && $$tstart>$then) { 858: $$tstatus='future'; 859: if ($$tstart<$now) { $$tstatus='will'; } 860: } 861: if ($$tend) { 862: if ($$tend<$then) { 863: $$tstatus='expired'; 864: } elsif ($$tend<$now) { 865: $$tstatus='will_not'; 866: } 867: } 868: } 869: } 870: } 871: 872: sub build_roletext { 873: my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$tfont,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver) = @_; 874: my $roletext='<tr bgcolor="'.$tbg.'" class="LC_rolesmenu_'.$tstatus.'">'; 875: my $is_dc=($trolecode =~ m/^dc\./); 876: my $rowspan=($is_dc) ? '' 877: : ' rowspan="2" '; 878: 879: unless ($nochoose) { 880: my $buttonname=$trolecode; 881: $buttonname=~s/\W//g; 882: if (!$button) { 883: if ($switchserver) { 884: $roletext.='<td'.$rowspan.'><span class="LC_rolesinfo"><a href="/adm/switchserver?'. 885: $switchserver.'">'.&mt('Switch Server').'</a></span></td>'; 886: } else { 887: $roletext.=('<td'.$rowspan.'> </td>'); 888: } 889: } elsif ($tstatus eq 'is') { 890: $roletext.='<td'.$rowspan.'><input name="'.$buttonname.'" type="button" value="'. 891: &mt('Select').'" onClick="javascript:enterrole(this.form,\''. 892: $trolecode."','".$buttonname.'\');"></td>'; 893: } elsif ($tryagain) { 894: $roletext.= 895: '<td'.$rowspan.'><input name="'.$buttonname.'" type="button" value="'. 896: &mt('Try Selecting Again').'" onClick="javascript:enterrole(this.form,\''. 897: $trolecode."','".$buttonname.'\');"></td>'; 898: } elsif ($advanced) { 899: $roletext.= 900: '<td'.$rowspan.'><input name="'.$buttonname.'" type="button" value="'. 901: &mt('Re-Initialize').'" onClick="javascript:enterrole(this.form,\''. 902: $trolecode."','".$buttonname.'\');"></td>'; 903: } else { 904: $roletext.='<td'.$rowspan.'> </td>'; 905: } 906: } 907: if ($trolecode !~ m/^(dc|ca|au|aa)\./) { 908: $tremark.=&Apache::lonannounce::showday(time,1, 909: &Apache::lonannounce::readcalendar($tdom.'_'.$trest)); 910: } 911: $roletext.='<td><font color="'.$tfont.'">'.$trole. 912: '</font></td><td><font color="'.$tfont.'">'.$twhere. 913: '</font></td><td><font color="'.$tfont.'">'.$tpstart. 914: '</font></td><td><font color="'.$tfont.'">'.$tpend. 915: '</font></td></tr>'; 916: if (!$is_dc) { 917: $roletext.='<tr bgcolor="'.$tbg.'"><td colspan="4"><font color="'.$tfont.'"><span class="LC_rolesinfo">'.$tremark. 918: '</span> </font></td></tr><tr><td colspan="5" height="3"></td></tr>'."\n"; 919: } 920: return $roletext; 921: } 922: 923: sub is_author_homeserver { 924: my ($uname,$udom)=@_; 925: my $home = &Apache::lonnet::homeserver($uname,$udom); 926: my @ids=&Apache::lonnet::current_machine_ids(); 927: foreach my $id (@ids) { 928: if ($id eq $home) { 929: if (-e "/home/".$uname."/public_html") { 930: return 1; 931: } 932: } 933: } 934: return 0; 935: } 936: 937: sub check_privs { 938: my ($cdom,$cnum,$then,$now,$checkrole) = @_; 939: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum; 940: if ($env{$cckey}) { 941: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend,$tfont); 942: &role_status($cckey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend); 943: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) { 944: &set_privileges($cdom,$cnum,$checkrole); 945: } 946: } else { 947: &set_privileges($cdom,$cnum,$checkrole); 948: } 949: } 950: 951: sub check_fordc { 952: my ($dcroles,$then) = @_; 953: my $numdc = 0; 954: if ($env{'user.adv'}) { 955: foreach my $envkey (sort keys %env) { 956: if ($envkey=~/^user\.role\.dc\.\/($match_domain)\/$/) { 957: my $dcdom = $1; 958: my $livedc = 1; 959: my ($tstart,$tend)=split(/\./,$env{$envkey}); 960: if ($tstart && $tstart>$then) { $livedc = 0; } 961: if ($tend && $tend <$then) { $livedc = 0; } 962: if ($livedc) { 963: $$dcroles{$dcdom} = $envkey; 964: $numdc++; 965: } 966: } 967: } 968: } 969: return $numdc; 970: } 971: 972: sub adhoc_course_role { 973: my ($then) = @_; 974: my ($cdom,$cnum); 975: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'}; 976: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'}; 977: if (&check_forcc($cdom,$cnum,$then)) { 978: my $setprivs; 979: if (!defined($env{'user.role.'.$env{'form.selectrole'}})) { 980: $setprivs = 1; 981: } else { 982: my ($start,$end) = split(/\./,$env{'user.role.'.$env{'form.selectrole'}}); 983: if (($start && ($start>$then || $start == -1)) || 984: ($end && $end<$then)) { 985: $setprivs = 1; 986: } 987: } 988: if ($setprivs) { 989: if ($env{'form.switchrole'} =~ m-^(in|ta|ep|ad|st|cr)([\w/]*)\./\Q$cdom\E/\Q$cnum\E(/?\w*)$-) { 990: my $role = $1; 991: my $custom_role = $2; 992: my $usec = $3; 993: if ($role eq 'cr') { 994: if ($custom_role =~ m-^$match_domain/$match_courseid/\w+$-) { 995: $role .= $custom_role; 996: } else { 997: return; 998: } 999: } 1000: my (%userroles,%newrole,%newgroups); 1001: my $area = '/'.$cdom.'/'.$cnum; 1002: my $spec = $role.'.'.$area; 1003: if ($usec ne '') { 1004: $spec .= '/'.$usec; 1005: $area .= '/'.$usec; 1006: } 1007: &Apache::lonnet::standard_roleprivs(\%newrole,$role,$cdom,$spec,$cnum,$area); 1008: &Apache::lonnet::set_userprivs(\%userroles,\%newrole,%newgroups); 1009: my $adhocstart = $then-1; 1010: $userroles{'user.role.'.$spec} = $adhocstart.'.'; 1011: &Apache::lonnet::appenv(%userroles); 1012: } 1013: } 1014: } 1015: return; 1016: } 1017: 1018: sub check_forcc { 1019: my ($cdom,$cnum,$then) = @_; 1020: my $is_cc; 1021: if ($cdom ne '' && $cnum ne '') { 1022: if (&Apache::lonnet::is_course($cdom,$cnum)) { 1023: my $envkey = 'user.role.cc./'.$cdom.'/'.$cnum; 1024: if (defined($env{$envkey})) { 1025: $is_cc = 1; 1026: my ($tstart,$tend)=split(/\./,$env{$envkey}); 1027: if ($tstart && $tstart>$then) { $is_cc = 0; } 1028: if ($tend && $tend <$then) { $is_cc = 0; } 1029: } 1030: } 1031: } 1032: return $is_cc; 1033: } 1034: 1035: sub courselink { 1036: my ($dcdom,$rowtype,$selecttype) = @_; 1037: my $courseform=&Apache::loncommon::selectcourse_link 1038: ('rolechoice','dccourse'.$rowtype.'_'.$dcdom, 1039: 'dcdomain'.$rowtype.'_'.$dcdom,'coursedesc'.$rowtype.'_'. 1040: $dcdom,$dcdom,undef); 1041: my $hiddenitems = '<input type="hidden" name="dcdomain'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'. 1042: '<input type="hidden" name="origdom'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'. 1043: '<input type="hidden" name="dccourse'.$rowtype.'_'.$dcdom.'" value="" />'. 1044: '<input type="hidden" name="coursedesc'.$rowtype.'_'.$dcdom.'" value="" />'; 1045: return $courseform.$hiddenitems; 1046: } 1047: 1048: sub coursepick_jscript { 1049: my %lt = &Apache::lonlocal::texthash( 1050: plsu => "Please use the 'Select Course' link to open a separate pick course window where you may select the course you wish to enter.", 1051: youc => 'You can only use this screen to select courses in the current domain.', 1052: ); 1053: my $verify_script = <<"END"; 1054: <script type="text/javascript"> 1055: function verifyCoursePick(caller) { 1056: var numbutton = getIndex(caller) 1057: var pickedCourse = document.rolechoice.elements[numbutton+4].value 1058: var pickedDomain = document.rolechoice.elements[numbutton+2].value 1059: if (document.rolechoice.elements[numbutton+2].value == document.rolechoice.elements[numbutton+3].value) { 1060: if (pickedCourse != '') { 1061: if (numbutton != -1) { 1062: var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse 1063: document.rolechoice.elements[numbutton+1].name = courseTarget 1064: document.rolechoice.submit() 1065: } 1066: } 1067: else { 1068: alert("$lt{'plsu'}"); 1069: } 1070: } 1071: else { 1072: alert("$lt{'youc'}") 1073: } 1074: } 1075: function getIndex(caller) { 1076: for (var i=0;i<document.rolechoice.elements.length;i++) { 1077: if (document.rolechoice.elements[i] == caller) { 1078: return i; 1079: } 1080: } 1081: return -1; 1082: } 1083: </script> 1084: END 1085: return $verify_script; 1086: } 1087: 1088: sub display_cc_role { 1089: my $rolekey = shift; 1090: my $roletext; 1091: my $advanced = $env{'user.adv'}; 1092: my $tryagain = $env{'form.tryagain'}; 1093: unless ($rolekey =~/^error\:/) { 1094: if ($rolekey =~ m-^user\.role.cc\./($match_domain)/($match_courseid)$-) { 1095: my $tcourseid = $1.'_'.$2; 1096: my $trolecode = 'cc./'.$1.'/'.$2; 1097: my $twhere; 1098: my $ttype; 1099: my $tbg='#77FF77'; 1100: my $tfont='#003300'; 1101: my %newhash=&Apache::lonnet::coursedescription($tcourseid); 1102: if (%newhash) { 1103: $twhere=$newhash{'description'}. 1104: ' <font size="-2">'. 1105: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$2,$1,$tfont). 1106: '</font>'; 1107: $ttype = $newhash{'type'}; 1108: } else { 1109: $twhere=&mt('Currently not available'); 1110: $env{'course.'.$tcourseid.'.description'}=$twhere; 1111: } 1112: my $trole = &Apache::lonnet::plaintext('cc',$ttype); 1113: $twhere.="<br />".&mt('Domain').":".$1; 1114: $roletext = &build_roletext($trolecode,$1,$2,'is',$tryagain,$advanced,'',$tbg,$tfont,$trole,$twhere,'','','',1,''); 1115: } 1116: } 1117: return ($roletext); 1118: } 1119: 1120: sub allcourses_row { 1121: my ($dcdom,$rowtype) = @_; 1122: my $output = '<tr bgcolor="#77FF77">'. 1123: ' <td colspan="5">'; 1124: my $selectlink = &courselink($dcdom,$rowtype); 1125: my $ccrole = &Apache::lonnet::plaintext('cc'); 1126: $output.= '<span class="LC_rolesinfo">'. 1127: &mt('[_1]: [_2] from domain [_3]',$ccrole,$selectlink,$dcdom). 1128: '</span><br /></tr>'."\n"; 1129: return $output; 1130: } 1131: 1132: sub allcoauthors_row { 1133: my ($dcdom,$rowtype) = @_; 1134: my $output = '<tr bgcolor="#77FF77">'. 1135: ' <td colspan="5">'; 1136: my $carole = &Apache::lonnet::plaintext('ca'); 1137: my $inputlink='<input type="text" size="10" name="adhoccauname'.$rowtype.'.'.$dcdom.'" />'; 1138: my $gobutton='<input type="submit" name="adhocca./'.$dcdom.'" value="'.&mt('Go').'" />'; 1139: $output.= '<span class="LC_rolesinfo">'. 1140: &mt('[_1]: [_2] in domain [_3] [_4]',$carole,$inputlink,$dcdom,$gobutton). 1141: '</span><br /></tr><tr><td colspan="5" height="3"></td></tr>'."\n"; 1142: return $output; 1143: } 1144: 1145: sub recent_filename { 1146: my $area=shift; 1147: return 'nohist_recent_'.&escape($area); 1148: } 1149: 1150: sub set_privileges { 1151: # role can be cc or ca 1152: my ($dcdom,$pickedcourse,$role) = @_; 1153: my $area = '/'.$dcdom.'/'.$pickedcourse; 1154: my $spec = $role.'.'.$area; 1155: my %userroles = &Apache::lonnet::set_arearole($role,$area,'','', 1156: $env{'user.domain'}, 1157: $env{'user.name'}); 1158: my %ccrole = (); 1159: &Apache::lonnet::standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area); 1160: my ($author,$adv)= &Apache::lonnet::set_userprivs(\%userroles,\%ccrole); 1161: &Apache::lonnet::appenv(%userroles); 1162: 1163: &Apache::lonnet::log($env{'user.domain'}, 1164: $env{'user.name'}, 1165: $env{'user.home'}, 1166: "Role ".$role); 1167: &Apache::lonnet::appenv( 1168: 'request.role' => $spec, 1169: 'request.role.domain' => $dcdom, 1170: 'request.course.sec' => ''); 1171: my $tadv=0; 1172: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; } 1173: &Apache::lonnet::appenv('request.role.adv' => $tadv); 1174: } 1175: 1176: sub courseloadpage { 1177: my ($courseid) = @_; 1178: my $startpage; 1179: my %entry_settings = &Apache::lonnet::get('nohist_whatsnew', 1180: [$courseid.':courseinit']); 1181: my ($tmp) = %entry_settings; 1182: unless ($tmp =~ /^error: 2 /) { 1183: $startpage = $entry_settings{$courseid.':courseinit'}; 1184: } 1185: if ($startpage eq '') { 1186: if (exists($env{'environment.course_init_display'})) { 1187: $startpage = $env{'environment.course_init_display'}; 1188: } 1189: } 1190: return $startpage; 1191: } 1192: 1193: 1; 1194: __END__ 1195: 1196: =head1 NAME 1197: 1198: Apache::lonroles - User Roles Screen 1199: 1200: =head1 SYNOPSIS 1201: 1202: Invoked by /etc/httpd/conf/srm.conf: 1203: 1204: <Location /adm/roles> 1205: PerlAccessHandler Apache::lonacc 1206: SetHandler perl-script 1207: PerlHandler Apache::lonroles 1208: ErrorDocument 403 /adm/login 1209: ErrorDocument 500 /adm/errorhandler 1210: </Location> 1211: 1212: =head1 OVERVIEW 1213: 1214: =head2 Choosing Roles 1215: 1216: C<lonroles> is a handler that allows a user to switch roles in 1217: mid-session. LON-CAPA attempts to work with "No Role Specified", the 1218: default role that a user has before selecting a role, as widely as 1219: possible, but certain handlers for example need specification which 1220: course they should act on, etc. Both in this scenario, and when the 1221: handler determines via C<lonnet>'s C<&allowed> function that a certain 1222: action is not allowed, C<lonroles> is used as error handler. This 1223: allows the user to select another role which may have permission to do 1224: what they were trying to do. C<lonroles> can also be accessed via the 1225: B<CRS> button in the Remote Control. 1226: 1227: =begin latex 1228: 1229: \begin{figure} 1230: \begin{center} 1231: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen} 1232: \caption{\label{Sample_Roles_Screen}Sample Roles Screen} 1233: \end{center} 1234: \end{figure} 1235: 1236: =end latex 1237: 1238: =head2 Role Initialization 1239: 1240: The privileges for a user are established at login time and stored in the session environment. As a consequence, a new role does not become active till the next login. Handlers are able to query for privileges using C<lonnet>'s C<&allowed> function. When a user first logs in, their role is the "common" role, which means that they have the sum of all of their privileges. During a session it might become necessary to choose a particular role, which as a consequence also limits the user to only the privileges in that particular role. 1241: 1242: =head1 INTRODUCTION 1243: 1244: This module enables a user to select what role he wishes to 1245: operate under (instructor, student, teaching assistant, course 1246: coordinator, etc). These roles are pre-established by the actions 1247: of upper-level users. 1248: 1249: This is part of the LearningOnline Network with CAPA project 1250: described at http://www.lon-capa.org. 1251: 1252: =head1 HANDLER SUBROUTINE 1253: 1254: This routine is called by Apache and mod_perl. 1255: 1256: =over 4 1257: 1258: =item * 1259: 1260: Roles Initialization (yes/no) 1261: 1262: =item * 1263: 1264: Get Error Message from Environment 1265: 1266: =item * 1267: 1268: Who is this? 1269: 1270: =item * 1271: 1272: Generate Page Output 1273: 1274: =item * 1275: 1276: Choice or no choice 1277: 1278: =item * 1279: 1280: Table 1281: 1282: =item * 1283: 1284: Privileges 1285: 1286: =back 1287: 1288: =cut