Annotation of loncom/auth/lonroles.pm, revision 1.88
1.1 harris41 1: # The LearningOnline Network with CAPA
2: # User Roles Screen
1.31 www 3: #
1.88 ! www 4: # $Id: lonroles.pm,v 1.87 2004/03/05 01:55:01 www Exp $
1.31 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: #
1.32 harris41 28: ###
1.22 harris41 29:
1.1 harris41 30: package Apache::lonroles;
31:
32: use strict;
33: use Apache::lonnet();
1.7 www 34: use Apache::lonuserstate();
1.1 harris41 35: use Apache::Constants qw(:common);
1.2 www 36: use Apache::File();
1.26 www 37: use Apache::lonmenu;
1.29 albertel 38: use Apache::loncommon;
1.57 www 39: use Apache::lonannounce;
1.72 www 40: use Apache::lonlocal;
1.1 harris41 41:
1.62 matthew 42: sub redirect_user {
43: my ($r,$title,$url,$msg) = @_;
44: $msg = $title if (! defined($msg));
1.73 www 45: &Apache::loncommon::content_type($r,'text/html');
1.62 matthew 46: &Apache::loncommon::no_cache($r);
47: $r->send_http_header;
48: my $swinfo=&Apache::lonmenu::rawconfig();
49: my $bodytag=&Apache::loncommon::bodytag('Switching Role');
50: $r->print (<<ENDREDIR);
51: <head><title>$title</title>
52: <meta HTTP-EQUIV="Refresh" CONTENT="1; url=$url">
53: </head>
54: <html>
55: $bodytag
56: <script>
57: $swinfo
58: </script>
59: <h1>$msg</h1>
60: </body>
61: </html>
62: ENDREDIR
63: return;
64: }
65:
1.1 harris41 66: sub handler {
1.10 www 67:
1.1 harris41 68: my $r = shift;
69:
1.6 www 70: my $now=time;
71: my $then=$ENV{'user.login.time'};
72: my $envkey;
73:
1.10 www 74:
1.6 www 75: # ================================================================== Roles Init
76:
77: if ($ENV{'form.selectrole'}) {
1.33 www 78: if ($ENV{'request.course.id'}) {
79: my %temp=('logout_'.$ENV{'request.course.id'} => time);
80: &Apache::lonnet::put('email_status',\%temp);
81: }
1.55 albertel 82: &Apache::lonnet::appenv("request.course.id" => '',
83: "request.course.fn" => '',
84: "request.course.uri" => '',
85: "request.course.sec" => '',
86: "request.role" => 'cm',
1.56 www 87: "request.role.adv" => $ENV{'user.adv'},
1.55 albertel 88: "request.role.domain" => $ENV{'user.domain'});
1.13 www 89: foreach $envkey (keys %ENV) {
1.40 matthew 90: next if ($envkey!~/^user\.role\./);
91: my (undef,undef,$role,@pwhere)=split(/\./,$envkey);
1.6 www 92: my $where=join('.',@pwhere);
93: my $trolecode=$role.'.'.$where;
94: if ($ENV{'form.'.$trolecode}) {
1.55 albertel 95: my ($tstart,$tend)=split(/\./,$ENV{$envkey});
96: my $tstatus='is';
97: if ($tstart) {
98: if ($tstart>$then) {
99: $tstatus='future';
100: }
101: }
102: if ($tend) {
103: if ($tend<$then) { $tstatus='expired'; }
104: if ($tend<$now) { $tstatus='will_not'; }
105: }
106: if ($tstatus eq 'is') {
107: $where=~s/^\///;
108: my ($cdom,$cnum,$csec)=split(/\//,$where);
1.53 www 109: # check for keyed access
1.55 albertel 110: if (($role eq 'st') &&
111: ($ENV{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) {
112: unless (&Apache::lonnet::validate_access_key(
113: $ENV{'environment.key.'.$cdom.'_'.$cnum},
114: $cdom,$cnum)) {
1.53 www 115: # there is no valid key
1.55 albertel 116: if ($ENV{'form.newkey'}) {
1.53 www 117: # student attempts to register a new key
1.55 albertel 118: } else {
1.53 www 119: # print form to enter a new key
1.73 www 120: &Apache::loncommon::content_type($r,'text/html');
1.55 albertel 121: &Apache::loncommon::no_cache($r);
122: $r->send_http_header;
123: my $swinfo=&Apache::lonmenu::rawconfig();
124: my $bodytag=&Apache::loncommon::bodytag
125: ('Enter Access Key to Unlock this Course');
126: $r->print(<<ENDENTERKEY);
1.53 www 127: <head><title>Entering Course Access Key</title>
128: </head>
129: <html>
130: $bodytag
131: <script>
132: $swinfo
133: </script>
134: <form method="post">
135: <input type="hidden" name="selectrole" value="$ENV{'form.selectrole'}" />
136: <input type="text" size="20" name="newkey" value="$ENV{'form.newkey'}" />
137: <input type="submit" value="Enter key" />
138: </form>
139: </body></html>
140: ENDENTERKEY
1.55 albertel 141: return OK;
142: }
143: }
144: }
1.87 www 145: &Apache::lonnet::log($ENV{'user.domain'},
146: $ENV{'user.name'},
147: $ENV{'user.home'},
148: "Role ".$trolecode);
1.56 www 149: my $tadv=0;
150: if (($trolecode!~/^st/) &&
151: ($trolecode!~/^ta/) &&
152: ($trolecode!~/^cm/)) { $tadv=1; }
153: &Apache::lonnet::appenv(
154: 'request.role' => $trolecode,
155: 'request.role.adv' => $tadv,
156: 'request.role.domain' => $cdom,
157: 'request.course.sec' => $csec);
1.72 www 158: my $msg=&mt('Entering course ...');
1.62 matthew 159:
1.55 albertel 160: if (($cnum) && ($role ne 'ca')) {
161: my ($furl,$ferr)=
162: &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
163: if (($ENV{'form.orgurl'}) &&
164: ($ENV{'form.orgurl'}!~/^\/adm\/flip/)) {
1.67 albertel 165: my $dest=$ENV{'form.orgurl'};
1.71 albertel 166: if ( &Apache::lonnet::mod_perl_version() == 2 ) {
1.67 albertel 167: &Apache::lonnet::cleanenv();
1.69 albertel 168: }
1.67 albertel 169: $r->internal_redirect($dest);
1.55 albertel 170: return OK;
171: } else {
172: unless ($ENV{'request.course.id'}) {
173: &Apache::lonnet::appenv(
174: "request.course.id" => $cdom.'_'.$cnum);
1.61 www 175: $furl='/adm/roles?tryagain=1';
1.55 albertel 176: $msg=
1.72 www 177: '<h1><font color=red>'.
178: &mt('Could not initialize course at this time.').
179: '</font></h1><h3>'.&mt('Please try again.').'</h3>'.$ferr;
1.55 albertel 180: }
1.58 bowersj2 181:
182: # Check to see if the user is a CC entering a course
183: # for the first time
184: my (undef, undef, $role, $courseid) = split(/\./, $envkey);
185: if (substr($courseid, 0, 1) eq '/') {
186: $courseid = substr($courseid, 1);
187: }
188: $courseid =~ s/\//_/;
189: if ($role eq 'cc' && $ENV{'course.' . $courseid .
190: '.course.helper.not.run'}) {
191: $furl = "/adm/helper/course.initialization.helper";
192: }
1.62 matthew 193: #
194: # Send the user to the course they selected
1.78 sakharuk 195: &redirect_user($r,&mt('Entering Course'),
1.62 matthew 196: $furl,$msg);
1.20 www 197: return OK;
1.55 albertel 198: }
199: }
1.62 matthew 200: #
201: # Send the user to the construction space they selected
202: if ($role =~ /^(au|ca)$/) {
203: my $redirect_url = '/priv/';
204: if ($role eq 'au') {
205: $redirect_url.=$ENV{'user.name'};
206: } else {
207: $where =~ /\/(.*)$/;
208: $redirect_url .= $1;
209: }
210: $redirect_url .= '/';
1.78 sakharuk 211: &redirect_user($r,&mt('Entering Construction Space'),
1.62 matthew 212: $redirect_url);
213: return OK;
214: }
1.55 albertel 215: }
216: }
1.6 www 217: }
1.40 matthew 218: }
1.44 www 219:
1.10 www 220:
1.6 www 221: # =============================================================== No Roles Init
1.10 www 222:
1.73 www 223: &Apache::loncommon::content_type($r,'text/html');
1.30 albertel 224: &Apache::loncommon::no_cache($r);
1.10 www 225: $r->send_http_header;
226: return OK if $r->header_only;
227:
1.52 www 228: my $swinfo=&Apache::lonmenu::rawconfig();
1.41 www 229: my $bodytag=&Apache::loncommon::bodytag('User Roles');
1.82 www 230: my $helptag='<table><tr><td>'.&Apache::loncommon::help_open_topic
231: ("General_Intro",&mt("Click here for help")).'</td><td>'.
232: &Apache::loncommon::help_open_faq(1,&mt('Click here for FAQ')).'</td><td>'.
233: &Apache::loncommon::help_open_bug('',&mt('Click here to report bugs')).'</td></tr></table>';
1.10 www 234: $r->print(<<ENDHEADER);
235: <html>
236: <head>
237: <title>LON-CAPA User Roles</title>
1.41 www 238: </head>
239: $bodytag
1.45 www 240: $helptag<br />
1.26 www 241: <script>
242: $swinfo
243: window.focus();
244: </script>
1.10 www 245: ENDHEADER
1.6 www 246:
1.2 www 247: # ------------------------------------------ Get Error Message from Environment
248:
249: my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$ENV{'user.error.msg'});
1.12 www 250: if ($ENV{'user.error.msg'}) {
1.55 albertel 251: $r->log_reason(
252: "$msg for $ENV{'user.name'} domain $ENV{'user.domain'} access $priv",$fn);
1.12 www 253: }
1.1 harris41 254:
1.61 www 255: # ------------------------------------------------- Can this user re-init, etc?
1.6 www 256:
1.61 www 257: my $advanced=$ENV{'user.adv'};
258: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']);
259: my $tryagain=$ENV{'form.tryagain'};
1.6 www 260:
1.2 www 261: # -------------------------------------------------------- Generate Page Output
1.6 www 262: # --------------------------------------------------------------- Error Header?
1.2 www 263: if ($error) {
264: $r->print("<h1>LON-CAPA Access Control</h1>");
1.4 www 265: $r->print("<hr><pre>Access : ".
266: Apache::lonnet::plaintext($priv)."\n");
267: $r->print("Resource: $fn\n");
268: $r->print("Action : $msg\n</pre><hr>");
1.2 www 269: } else {
1.25 www 270: if ($ENV{'user.error.msg'}) {
271: $r->print(
1.72 www 272: '<h3><font color=red>'.
273: &mt('You need to choose another user role or enter a specific course for this function').'</font></h3>');
1.25 www 274: }
1.2 www 275: }
1.6 www 276: # -------------------------------------------------------- Choice or no choice?
1.2 www 277: if ($nochoose) {
1.6 www 278: if ($advanced) {
1.72 www 279: $r->print("<h2>".&mt('Assigned User Roles')."</h2>\n");
1.6 www 280: } else {
1.72 www 281: $r->print("<h2>".&mt('Sorry ...')."</h2>\n".
282: &mt('This resource might be part of'));
1.55 albertel 283: if ($ENV{'request.course.id'}) {
1.72 www 284: $r->print(&mt(' another'));
1.55 albertel 285: } else {
1.72 www 286: $r->print(&mt(' a certain'));
1.55 albertel 287: }
1.72 www 288: $r->print(&mt(' course.').'</body></html>');
1.55 albertel 289: return OK;
1.6 www 290: }
291: } else {
292: if ($advanced) {
1.72 www 293: $r->print(&mt("Your home server is ").
1.55 albertel 294: $Apache::lonnet::hostname{&Apache::lonnet::homeserver
295: ($ENV{'user.name'},$ENV{'user.domain'})}.
296: "<br />\n");
1.72 www 297: $r->print(&mt(
298: "Author and Co-Author roles may not be available on servers other than your home server."));
1.17 www 299: }
1.18 www 300: if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
301: $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
1.6 www 302: }
1.84 www 303: $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">');
1.6 www 304: $r->print('<input type=hidden name=orgurl value="'.$fn.'">');
305: $r->print('<input type=hidden name=selectrole value=1>');
306: }
1.63 www 307: if ($ENV{'user.adv'}) {
308: $r->print(
1.72 www 309: '<br />'.&mt('Show all roles').': <input type="checkbox" name="showall"');
1.63 www 310: if ($ENV{'form.showall'}) { $r->print(' checked'); }
1.72 www 311: $r->print('><input type=submit value="'.&mt('Display').'">');
1.63 www 312: }
1.4 www 313:
1.75 albertel 314: my (%roletext,%sortrole,%roleclass);
1.84 www 315: my $countactive=0;
316: my $inrole=0;
317: my $possiblerole='';
1.3 albertel 318: foreach $envkey (sort keys %ENV) {
1.35 matthew 319: my $button = 1;
1.49 www 320: my $switchserver='';
1.75 albertel 321: my $roletext;
322: my $sortkey;
1.2 www 323: if ($envkey=~/^user\.role\./) {
1.40 matthew 324: my (undef,undef,$role,@pwhere)=split(/\./,$envkey);
1.46 matthew 325: next if (!defined($role) || $role eq '');
1.4 www 326: my $where=join('.',@pwhere);
1.6 www 327: my $trolecode=$role.'.'.$where;
1.4 www 328: my ($tstart,$tend)=split(/\./,$ENV{$envkey});
329: my $tremark='';
330: my $tstatus='is';
331: my $tpstart=' ';
332: my $tpend=' ';
1.47 www 333: my $tfont='#000000';
1.4 www 334: if ($tstart) {
335: if ($tstart>$then) {
1.35 matthew 336: $tstatus='future';
337: if ($tstart<$now) { $tstatus='will'; }
1.4 www 338: }
1.74 www 339: $tpstart=&Apache::lonlocal::locallocaltime($tstart);
1.4 www 340: }
341: if ($tend) {
1.23 www 342: if ($tend<$then) {
1.35 matthew 343: $tstatus='expired';
1.23 www 344: } elsif ($tend<$now) {
1.35 matthew 345: $tstatus='will_not';
1.23 www 346: }
1.74 www 347: $tpend=&Apache::lonlocal::locallocaltime($tend);
1.4 www 348: }
1.6 www 349: if ($ENV{'request.role'} eq $trolecode) {
350: $tstatus='selected';
351: }
1.4 www 352: my $tbg;
1.35 matthew 353: if (($tstatus eq 'is') || ($tstatus eq 'selected') ||
354: ($ENV{'form.showall'})) {
355: if ($tstatus eq 'is') {
356: $tbg='#77FF77';
1.47 www 357: $tfont='#003300';
1.84 www 358: $possiblerole=$trolecode;
359: $countactive++;
1.35 matthew 360: } elsif ($tstatus eq 'future') {
361: $tbg='#FFFF77';
1.49 www 362: $button=0;
1.35 matthew 363: } elsif ($tstatus eq 'will') {
364: $tbg='#FFAA77';
1.72 www 365: $tremark.=&mt('Active at next login. ');
1.35 matthew 366: } elsif ($tstatus eq 'expired') {
367: $tbg='#FF7777';
1.47 www 368: $tfont='#330000';
1.49 www 369: $button=0;
1.35 matthew 370: } elsif ($tstatus eq 'will_not') {
371: $tbg='#AAFF77';
1.72 www 372: $tremark.=&mt('Expired after logout. ');
1.35 matthew 373: } elsif ($tstatus eq 'selected') {
374: $tbg='#11CC55';
1.47 www 375: $tfont='#002200';
1.84 www 376: $inrole=1;
1.86 albertel 377: $countactive++;
1.72 www 378: $tremark.=&mt('Currently selected. ');
1.35 matthew 379: }
380: my $trole;
381: if ($role =~ /^cr\//) {
382: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
1.72 www 383: $tremark.='<br>'.&mt('Defined by ').$rauthor.
384: &mt(' at ').$rdomain.'.';
1.35 matthew 385: $trole=$rrole;
1.8 www 386: } else {
1.35 matthew 387: $trole=Apache::lonnet::plaintext($role);
388: }
389: my $ttype;
390: my $twhere;
391: my ($tdom,$trest,$tsection)=
392: split(/\//,Apache::lonnet::declutter($where));
393: # First, Co-Authorship roles
394: if ($role eq 'ca') {
1.39 stredwic 395: my $home = &Apache::lonnet::homeserver($trest,$tdom);
1.83 albertel 396: my $allowed=0;
397: my @ids=&Apache::lonnet::current_machine_ids();
398: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
399: if (!$allowed) {
1.49 www 400: $button=0;
1.51 www 401: $switchserver=&Apache::lonnet::escape('http://'.
402: $Apache::lonnet::hostname{$home}.
403: '/adm/login?domain='.$ENV{'user.domain'}.
404: '&username='.$ENV{'user.name'}.
405: '&firsturl=/priv/'.$trest);
1.49 www 406: }
1.35 matthew 407: #next if ($home eq 'no_host');
408: $home = $Apache::lonnet::hostname{$home};
1.78 sakharuk 409: $ttype='Construction Space';
1.72 www 410: $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
411: ': '.$tdom.'<br />'.
412: ' '.&mt('Server').': '.$home;
1.35 matthew 413: $ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';
1.82 www 414: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/');
1.75 albertel 415: $sortkey=$role."$trest:$tdom";
1.35 matthew 416: } elsif ($role eq 'au') {
417: # Authors
418: my $home = &Apache::lonnet::homeserver
1.39 stredwic 419: ($ENV{'user.name'},$ENV{'user.domain'});
1.83 albertel 420: my $allowed=0;
421: my @ids=&Apache::lonnet::current_machine_ids();
422: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
423: if (!$allowed) {
1.49 www 424: $button=0;
1.51 www 425: $switchserver=&Apache::lonnet::escape('http://'.
426: $Apache::lonnet::hostname{$home}.
427: '/adm/login?domain='.$ENV{'user.domain'}.
428: '&username='.$ENV{'user.name'}.
429: '&firsturl=/priv/'.$ENV{'user.name'});
1.49 www 430: }
1.35 matthew 431: #next if ($home eq 'no_host');
432: $home = $Apache::lonnet::hostname{$home};
1.78 sakharuk 433: $ttype='Construction Space';
1.72 www 434: $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
435: ': '.$home;
1.35 matthew 436: $ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';
1.82 www 437: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$ENV{'user.name'}.'/');
1.75 albertel 438: $sortkey=$role;
1.35 matthew 439: } elsif ($trest) {
1.78 sakharuk 440: $ttype='Course';
1.35 matthew 441: if ($tsection) {
1.72 www 442: $ttype.='<br>'.&mt('Section/Group').': '.$tsection;
1.37 albertel 443: }
1.35 matthew 444: my $tcourseid=$tdom.'_'.$trest;
445: if ($ENV{'course.'.$tcourseid.'.description'}) {
1.47 www 446: $twhere=$ENV{'course.'.$tcourseid.'.description'};
1.80 albertel 447: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1.72 www 448: unless ($twhere eq &mt('Currently not available')) {
1.55 albertel 449: $twhere.=' <font size="-2">'.
1.72 www 450: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
1.49 www 451: '</font>';
1.55 albertel 452: }
1.8 www 453: } else {
1.35 matthew 454: my %newhash=Apache::lonnet::coursedescription
455: ($tcourseid);
456: if (%newhash) {
1.80 albertel 457: $sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
1.77 albertel 458: "\0".$envkey;
1.49 www 459: $twhere=$newhash{'description'}.
460: ' <font size="-2">'.
1.72 www 461: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
1.49 www 462: '</font>';
1.35 matthew 463: } else {
1.72 www 464: $twhere=&mt('Currently not available');
1.35 matthew 465: $ENV{'course.'.$tcourseid.'.description'}=$twhere;
1.80 albertel 466: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1.35 matthew 467: }
1.8 www 468: }
1.72 www 469: if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
1.35 matthew 470: } elsif ($tdom) {
1.78 sakharuk 471: $ttype='Domain';
1.35 matthew 472: $twhere=$tdom;
1.75 albertel 473: $sortkey=$role.$twhere;
1.35 matthew 474: } else {
1.78 sakharuk 475: $ttype='System';
1.72 www 476: $twhere=&mt('system wide');
1.75 albertel 477: $sortkey=$role.$twhere;
1.13 www 478: }
1.35 matthew 479:
1.75 albertel 480: $roletext.='<tr bgcolor='.$tbg.'>';
1.35 matthew 481: unless ($nochoose) {
482: if (!$button) {
1.49 www 483: if ($switchserver) {
1.75 albertel 484: $roletext.='<td><a href="/adm/logout?handover='.
485: $switchserver.'">'.&mt('Switch Server').'</a></td>';
1.49 www 486: } else {
1.75 albertel 487: $roletext.=('<td> </td>');
1.49 www 488: }
1.35 matthew 489: } elsif ($tstatus eq 'is') {
1.75 albertel 490: $roletext.=('<td><input type=submit value="'.
1.72 www 491: &mt('Select').'" name="'.
1.35 matthew 492: $trolecode.'"></td>');
1.61 www 493: } elsif ($tryagain) {
1.75 albertel 494: $roletext.=
495: '<td><input type=submit value="'.
496: &mt('Try Selecting Again').'" name="'.$trolecode.'"></td>';
1.61 www 497: } elsif ($advanced) {
1.75 albertel 498: $roletext.=
499: '<td><input type=submit value="'.
500: &mt('Re-Initialize').'" name="'.$trolecode.'"></td>';
1.35 matthew 501: } else {
1.75 albertel 502: $roletext.='<td> </td>';
1.35 matthew 503: }
1.6 www 504: }
1.57 www 505: $tremark.=&Apache::lonannounce::showday(time,1,
506: &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
507:
1.75 albertel 508: $roletext.='<td><font color="'.$tfont.'">'.$trole.
1.47 www 509: '</font></td><td><font color="'.$tfont.'">'.$ttype.
510: '</font></td><td><font color="'.$tfont.'">'.$twhere.
511: '</font></td><td><font color="'.$tfont.'">'.$tpstart.
512: '</font></td><td><font color="'.$tfont.'">'.$tpend.
513: '</font></td><td><font color="'.$tfont.'">'.$tremark.
1.75 albertel 514: ' </font></td></tr>'."\n";
515: $roletext{$envkey}=$roletext;
516: if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
517: $sortrole{$sortkey}=$envkey;
518: $roleclass{$envkey}=$ttype;
1.55 albertel 519: }
1.4 www 520: }
1.75 albertel 521: }
1.84 www 522: # No active roles
523: if ($countactive==0) {
524: if ($inrole) {
525: $r->print('<h2>'.&mt('Currently no additional roles or courses').'</h2>');
526: } else {
527: $r->print('<h2>'.&mt('Currently no active roles or courses').'</h2>');
528: }
529: $r->print('</form></body></html>');
530: return OK;
531: # Is there only one choice?
1.88 ! www 532: } elsif (($countactive==1) && ($ENV{'request.role'} eq 'cm')) {
1.84 www 533: $r->print('<h3>'.&mt('Please stand by.').'</h3>'.
534: '<input type="hidden" name="'.$possiblerole.'" value="1" />');
535: $r->print("</form>\n");
536: $r->rflush();
537: $r->print('<script>document.forms.rolechoice.submit();</script>');
538: $r->print('</body></html>');
539: return OK;
540: }
541: # More than one possible role
542: # ----------------------------------------------------------------------- Table
543: unless (($advanced) || ($nochoose)) {
544: $r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
545: }
546: $r->print('<br /><table><tr>');
547: unless ($nochoose) { $r->print('<th> </th>'); }
548: $r->print('<th>'.&mt('User Role').'</th><th colspan=2>'.&mt('Extent').
549: '</th><th>'.&mt('Start').'</th><th>'.&mt('End').'</th><th>'.
550: &mt('Remark').'</th></tr>'."\n");
1.76 albertel 551: my $doheaders=-1;
1.78 sakharuk 552: foreach my $type ('Construction Space','Course','Domain','System') {
1.76 albertel 553: my $haverole=0;
1.75 albertel 554: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
555: if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) {
1.76 albertel 556: $haverole=1;
1.75 albertel 557: }
1.76 albertel 558: }
559: if ($haverole) { $doheaders++; }
560: }
1.78 sakharuk 561: foreach my $type ('Construction Space','Course','Domain','System') {
1.76 albertel 562: my $output;
563: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
564: if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) {
1.78 sakharuk 565: $output.=&mt($roletext{$sortrole{$which}});
1.76 albertel 566: }
567: }
568: if ($output) {
569: if ($doheaders > 0) {
1.77 albertel 570: $r->print("<tr bgcolor='#BBffBB'>".
1.79 sakharuk 571: "<td align='center' colspan='7'>".&mt($type)."</td>");
1.76 albertel 572: }
573: $r->print($output);
1.75 albertel 574: }
1.4 www 575: }
1.14 www 576: my $tremark='';
1.47 www 577: my $tfont='#003300';
1.14 www 578: if ($ENV{'request.role'} eq 'cm') {
1.19 www 579: $r->print('<tr bgcolor="#11CC55">');
1.72 www 580: $tremark=&mt('Currently selected. ');
1.47 www 581: $tfont='#002200';
1.14 www 582: } else {
583: $r->print('<tr bgcolor="#77FF77">');
584: }
585: unless ($nochoose) {
1.55 albertel 586: if ($ENV{'request.role'} ne 'cm') {
1.72 www 587: $r->print('<td><input type=submit value="'.
588: &mt('Select').'" name="cm"></td>');
1.55 albertel 589: } else {
590: $r->print('<td> </td>');
591: }
1.14 www 592: }
1.72 www 593: $r->print('<td colspan=5><font color="'.$tfont.'">'.&mt('No role specified').
1.47 www 594: '</font></td><td><font color="'.$tfont.'">'.$tremark.
595: ' </font></td></tr>'."\n");
1.4 www 596:
597: $r->print('</table>');
598: unless ($nochoose) {
599: $r->print("</form>\n");
600: }
1.22 harris41 601: # ------------------------------------------------------------ Privileges Info
1.55 albertel 602: if (($advanced) && (($ENV{'user.error.msg'}) || ($error))) {
603: $r->print('<hr><h2>Current Privileges</h2>');
1.4 www 604:
1.55 albertel 605: foreach $envkey (sort keys %ENV) {
606: if ($envkey=~/^user\.priv\.$ENV{'request.role'}\./) {
607: my $where=$envkey;
608: $where=~s/^user\.priv\.$ENV{'request.role'}\.//;
609: my $ttype;
610: my $twhere;
611: my ($tdom,$trest,$tsec)=
612: split(/\//,Apache::lonnet::declutter($where));
613: if ($trest) {
614: if ($ENV{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
615: $ttype='Construction Space';
616: $twhere='User: '.$trest.', Domain: '.$tdom;
617: } else {
618: $ttype='Course';
619: $twhere=$ENV{'course.'.$tdom.'_'.$trest.'.description'};
620: if ($tsec) {
621: $twhere.=' (Section/Group: '.$tsec.')';
622: }
623: }
624: } elsif ($tdom) {
625: $ttype='Domain';
626: $twhere=$tdom;
627: } else {
628: $ttype='System';
629: $twhere='/';
630: }
631: $r->print("\n<h3>".$ttype.': '.$twhere.'</h3><ul>');
632: foreach (sort split(/:/,$ENV{$envkey})) {
633: if ($_) {
634: my ($prv,$restr)=split(/\&/,$_);
635: my $trestr='';
636: if ($restr ne 'F') {
637: my $i;
638: $trestr.=' (';
639: for ($i=0;$i<length($restr);$i++) {
640: $trestr.=
641: Apache::lonnet::plaintext(substr($restr,$i,1));
642: if ($i<length($restr)-1) { $trestr.=', '; }
643: }
644: $trestr.=')';
645: }
646: $r->print('<li>'.
647: Apache::lonnet::plaintext($prv).$trestr.
648: '</li>');
649: }
650: }
651: $r->print('</ul>');
652: }
653: }
1.4 www 654: }
1.66 www 655: $r->print(&Apache::lonnet::getannounce());
1.65 www 656: if ($advanced) {
657: $r->print('<p><small><i>This is LON-CAPA '.
1.85 www 658: $r->dir_config('lonVersion').'</i><br />'.
659: '<a href="/adm/logout">'.&mt('Logout').'</a></small></p>');
1.65 www 660: }
1.1 harris41 661: $r->print("</body></html>\n");
662: return OK;
663: }
664:
665: 1;
666: __END__
1.32 harris41 667:
668: =head1 NAME
669:
670: Apache::lonroles - User Roles Screen
671:
672: =head1 SYNOPSIS
673:
674: Invoked by /etc/httpd/conf/srm.conf:
675:
676: <Location /adm/roles>
677: PerlAccessHandler Apache::lonacc
678: SetHandler perl-script
679: PerlHandler Apache::lonroles
680: ErrorDocument 403 /adm/login
681: ErrorDocument 500 /adm/errorhandler
682: </Location>
1.64 bowersj2 683:
684: =head1 OVERVIEW
685:
686: =head2 Choosing Roles
687:
688: C<lonroles> is a handler that allows a user to switch roles in
689: mid-session. LON-CAPA attempts to work with "No Role Specified", the
690: default role that a user has before selecting a role, as widely as
691: possible, but certain handlers for example need specification which
692: course they should act on, etc. Both in this scenario, and when the
693: handler determines via C<lonnet>'s C<&allowed> function that a certain
694: action is not allowed, C<lonroles> is used as error handler. This
695: allows the user to select another role which may have permission to do
696: what they were trying to do. C<lonroles> can also be accessed via the
697: B<CRS> button in the Remote Control.
698:
699: =begin latex
700:
701: \begin{figure}
702: \begin{center}
703: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
704: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
705: \end{center}
706: \end{figure}
707:
708: =end latex
709:
710: =head2 Role Initialization
711:
712: 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.
1.32 harris41 713:
714: =head1 INTRODUCTION
715:
716: This module enables a user to select what role he wishes to
717: operate under (instructor, student, teaching assistant, course
718: coordinator, etc). These roles are pre-established by the actions
719: of upper-level users.
720:
721: This is part of the LearningOnline Network with CAPA project
722: described at http://www.lon-capa.org.
723:
724: =head1 HANDLER SUBROUTINE
725:
726: This routine is called by Apache and mod_perl.
727:
728: =over 4
729:
730: =item *
731:
732: Roles Initialization (yes/no)
733:
734: =item *
735:
736: Get Error Message from Environment
737:
738: =item *
739:
740: Who is this?
741:
742: =item *
743:
744: Generate Page Output
745:
746: =item *
747:
748: Choice or no choice
749:
750: =item *
751:
752: Table
753:
754: =item *
755:
756: Privileges
757:
758: =back
759:
760: =cut
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