loncom/xml/lonxml.pm - view

File: [LON-CAPA] / loncom / xml / lonxml.pm
Revision 1.373: download - view: text, annotated - select for diffs
Tue May 3 06:44:56 2005 UTC (19 years ago) by albertel
Branches: MAIN
CVS tags: version_1_99_1_tmcc, HEAD

- setup env so lonxml::whichuser returns data for user being graded
- need to reset rndseed, since we don't know til the end of <Task> who we are grading
- remember who we are grading

1: # The LearningOnline Network with CAPA 2: # XML Parser Module 3: # 4: # $Id: lonxml.pm,v 1.373 2005/05/03 06:44:56 albertel 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: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson. 29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into 30: # binary executable programs or libraries distributed by the 31: # Michigan State University (the "Licensee"), but any binaries so 32: # distributed are hereby licensed only for use in the context 33: # of a program or computational system for which the Licensee is the 34: # primary author or distributor, and which performs substantial 35: # additional tasks beyond the translation of (La)TeX into HTML. 36: # The C source of the Code may not be distributed by the Licensee 37: # to any other parties under any circumstances. 38: # 39: 40: 41: package Apache::lonxml; 42: use vars 43: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount @htmlareafields); 44: use strict; 45: use HTML::LCParser(); 46: use HTML::TreeBuilder(); 47: use HTML::Entities(); 48: use Safe(); 49: use Safe::Hole(); 50: use Math::Cephes(); 51: use Math::Random(); 52: use Opcode(); 53: use POSIX qw(strftime); 54: use Time::HiRes qw( gettimeofday tv_interval ); 55: 56: sub register { 57: my ($space,@taglist) = @_; 58: foreach my $temptag (@taglist) { 59: push(@{ $Apache::lonxml::alltags{$temptag} },$space); 60: } 61: } 62: 63: sub deregister { 64: my ($space,@taglist) = @_; 65: foreach my $temptag (@taglist) { 66: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1]; 67: if ($tempspace eq $space) { 68: pop(@{ $Apache::lonxml::alltags{$temptag} }); 69: } 70: } 71: #&printalltags(); 72: } 73: 74: use Apache::Constants qw(:common); 75: use Apache::lontexconvert(); 76: use Apache::style(); 77: use Apache::run(); 78: use Apache::londefdef(); 79: use Apache::scripttag(); 80: use Apache::languagetags(); 81: use Apache::edit(); 82: use Apache::inputtags(); 83: use Apache::outputtags(); 84: use Apache::lonnet; 85: use Apache::File(); 86: use Apache::loncommon(); 87: use Apache::lonfeedback(); 88: use Apache::lonmsg(); 89: use Apache::loncacc(); 90: use Apache::lonlocal; 91: 92: #================================================== Main subroutine: xmlparse 93: #debugging control, to turn on debugging modify the correct handler 94: $Apache::lonxml::debug=0; 95: 96: # keeps count of the number of warnings and errors generated in a parse 97: $warningcount=0; 98: $errorcount=0; 99: 100: #path to the directory containing the file currently being processed 101: @pwd=(); 102: 103: #these two are used for capturing a subset of the output for later processing, 104: #don't touch them directly use &startredirection and &endredirection 105: @outputstack = (); 106: $redirection = 0; 107: 108: #controls wheter the <import> tag actually does 109: $import = 1; 110: @extlinks=(); 111: 112: # meta mode is a bit weird only some output is to be turned off 113: #<output> tag turns metamode off (defined in londefdef.pm) 114: $metamode = 0; 115: 116: # turns on and of run::evaluate actually derefencing var refs 117: $evaluate = 1; 118: 119: # data structure for eidt mode, determines what tags can go into what other tags 120: %insertlist=(); 121: 122: # stores the list of active tag namespaces 123: @namespace=(); 124: 125: # has the dynamic menu been updated to know about this resource 126: $Apache::lonxml::registered=0; 127: 128: # a pointer the the Apache request object 129: $Apache::lonxml::request=''; 130: 131: # a problem number counter, and check on ether it is used 132: $Apache::lonxml::counter=1; 133: $Apache::lonxml::counter_changed=0; 134: 135: #internal check on whether to look at style defs 136: $Apache::lonxml::usestyle=1; 137: 138: #locations used to store the parameter string for style substitutions 139: $Apache::lonxml::style_values=''; 140: $Apache::lonxml::style_end_values=''; 141: 142: #array of ssi calls that need to occur after we are done parsing 143: @Apache::lonxml::ssi_info=(); 144: 145: #should we do the postag variable interpolation 146: $Apache::lonxml::post_evaluate=1; 147: 148: #a header message to emit in the case of any generated warning or errors 149: $Apache::lonxml::warnings_error_header=''; 150: 151: sub xmlbegin { 152: my ($style)=@_; 153: my $output=''; 154: @htmlareafields=(); 155: if ($env{'browser.mathml'}) { 156: $output='<?xml version="1.0"?>' 157: #.'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'."\n" 158: # .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" ' 159: 160: # .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" [<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">] >' 161: .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">' 162: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" ' 163: .'xmlns="http://www.w3.org/1999/xhtml">'; 164: } else { 165: $output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>'; 166: } 167: if ($style eq 'encode') { 168: $output=&HTML::Entities::encode($output,'<>&"'); 169: } 170: return $output; 171: } 172: 173: sub xmlend { 174: my ($target,$parser)=@_; 175: my $mode='xml'; 176: my $status='OPEN'; 177: if ($Apache::lonhomework::parsing_a_problem || 178: $Apache::lonhomework::parsing_a_task ) { 179: $mode='problem'; 180: $status=$Apache::inputtags::status[-1]; 181: } 182: my $discussion; 183: &Apache::loncommon::get_unprocessed_cgi 184: ($env{'query_string'},['LONCAPA_INTERNAL_no_discussion']); 185: if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) || 186: $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') { 187: $discussion=&Apache::lonfeedback::list_discussion($mode,$status); 188: } 189: if ($target eq 'tex') { 190: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>'; 191: &Apache::lonxml::newparser($parser,\$discussion,''); 192: return ''; 193: } else { 194: return $discussion.&Apache::loncommon::endbodytag(); 195: } 196: } 197: 198: sub tokeninputfield { 199: my $defhost=$Apache::lonnet::perlvar{'lonHostID'}; 200: $defhost=~tr/a-z/A-Z/; 201: return (<<ENDINPUTFIELD) 202: <script type="text/javascript"> 203: function updatetoken() { 204: var comp=new Array; 205: var barcode=unescape(document.tokeninput.barcode.value); 206: comp=barcode.split('*'); 207: if (typeof(comp[0])!="undefined") { 208: document.tokeninput.codeone.value=comp[0]; 209: } 210: if (typeof(comp[1])!="undefined") { 211: document.tokeninput.codetwo.value=comp[1]; 212: } 213: if (typeof(comp[2])!="undefined") { 214: comp[2]=comp[2].toUpperCase(); 215: document.tokeninput.codethree.value=comp[2]; 216: } 217: document.tokeninput.barcode.value=''; 218: } 219: </script> 220: <form method="post" name="tokeninput"> 221: <table border="2" bgcolor="#FFFFBB"> 222: <tr><th>DocID Checkin</th></tr> 223: <tr><td> 224: <table> 225: <tr> 226: <td>Scan in Barcode</td> 227: <td><input type="text" size="22" name="barcode" 228: onChange="updatetoken()"/></td> 229: </tr> 230: <tr><td><i>or</i> Type in DocID</td> 231: <td> 232: <input type="text" size="5" name="codeone" /> 233: <b><font size="+2">*</font></b> 234: <input type="text" size="5" name="codetwo" /> 235: <b><font size="+2">*</font></b> 236: <input type="text" size="10" name="codethree" value="$defhost" 237: onChange="this.value=this.value.toUpperCase()" /> 238: </td></tr> 239: </table> 240: </td></tr> 241: <tr><td><input type="submit" value="Check in DocID" /></td></tr> 242: </table> 243: </form> 244: ENDINPUTFIELD 245: } 246: 247: sub maketoken { 248: my ($symb,$tuname,$tudom,$tcrsid)=@_; 249: unless ($symb) { 250: $symb=&Apache::lonnet::symbread(); 251: } 252: unless ($tuname) { 253: $tuname=$env{'user.name'}; 254: $tudom=$env{'user.domain'}; 255: $tcrsid=$env{'request.course.id'}; 256: } 257: 258: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid); 259: } 260: 261: sub printtokenheader { 262: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_; 263: unless ($token) { return ''; } 264: 265: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); 266: unless ($tsymb) { 267: $tsymb=$symb; 268: } 269: unless ($tuname) { 270: $tuname=$name; 271: $tudom=$domain; 272: $tcrsid=$courseid; 273: } 274: 275: my %reply=&Apache::lonnet::get('environment', 276: ['firstname','middlename','lastname','generation'], 277: $tudom,$tuname); 278: my $plainname=$reply{'firstname'}.' '. 279: $reply{'middlename'}.' '. 280: $reply{'lastname'}.' '. 281: $reply{'generation'}; 282: 283: if ($target eq 'web') { 284: my %idhash=&Apache::lonnet::idrget($tudom,($tuname)); 285: return 286: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'. 287: &mt('Checked out for').' '.$plainname. 288: '<br />'.&mt('User').': '.$tuname.' at '.$tudom. 289: '<br />'.&mt('ID').': '.$idhash{$tuname}. 290: '<br />'.&mt('CourseID').': '.$tcrsid. 291: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}. 292: '<br />'.&mt('DocID').': '.$token. 293: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />'; 294: } else { 295: return $token; 296: } 297: } 298: 299: sub fontsettings { 300: my $headerstring=''; 301: if (($env{'browser.os'} eq 'mac') && (!$env{'browser.mathml'})) { 302: $headerstring.= 303: '<meta Content-Type="text/html; charset=x-mac-roman" />'; 304: } elsif (!$env{'browser.mathml'} && $env{'browser.unicode'}) { 305: $headerstring.= 306: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />'; 307: } 308: return $headerstring; 309: } 310: 311: sub printalltags { 312: my $temp; 313: foreach $temp (sort keys %Apache::lonxml::alltags) { 314: &Apache::lonxml::debug("$temp -- ". 315: join(',',@{ $Apache::lonxml::alltags{$temp} })); 316: } 317: } 318: 319: sub xmlparse { 320: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_; 321: 322: &setup_globals($request,$target); 323: &Apache::inputtags::initialize_inputtags(); 324: &Apache::bridgetask::initialize_bridgetask(); 325: &Apache::outputtags::initialize_outputtags(); 326: &Apache::edit::initialize_edit(); 327: &Apache::londefdef::initialize_londefdef(); 328: 329: # 330: # do we have a course style file? 331: # 332: 333: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') { 334: my $bodytext= 335: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'}; 336: if ($bodytext) { 337: foreach my $file (split(',',$bodytext)) { 338: my $location=&Apache::lonnet::filelocation('',$file); 339: my $styletext=&Apache::lonnet::getfile($location); 340: if ($styletext ne '-1') { 341: %style_for_target = (%style_for_target, 342: &Apache::style::styleparser($target,$styletext)); 343: } 344: } 345: } 346: } elsif ($env{'construct.style'} && ($env{'request.state'} eq 'construct')) { 347: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'}); 348: my $styletext=&Apache::lonnet::getfile($location); 349: if ($styletext ne '-1') { 350: %style_for_target = (%style_for_target, 351: &Apache::style::styleparser($target,$styletext)); 352: } 353: } 354: #&printalltags(); 355: my @pars = (); 356: my $pwd=$env{'request.filename'}; 357: $pwd =~ s:/[^/]*$::; 358: &newparser(\@pars,\$content_file_string,$pwd); 359: 360: my $safeeval = new Safe; 361: my $safehole = new Safe::Hole; 362: &init_safespace($target,$safeeval,$safehole,$safeinit); 363: #-------------------- Redefinition of the target in the case of compound target 364: 365: ($target, my @tenta) = split('&&',$target); 366: 367: my @stack = (); 368: my @parstack = (); 369: &initdepth(); 370: &init_alarm(); 371: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars, 372: $safeeval,\%style_for_target); 373: 374: if ($env{'request.uri'}) { 375: &writeallows($env{'request.uri'}); 376: } 377: &do_registered_ssi(); 378: if ($Apache::lonxml::counter_changed) { &store_counter() } 379: if ($env{'form.return_only_error_and_warning_counts'}) { 380: return "$errorcount:$warningcount"; 381: } 382: return $finaloutput; 383: } 384: 385: sub htmlclean { 386: my ($raw,$full)=@_; 387: # Take care of CRLF etc 388: 389: $raw=~s/\r\f/\n/gs; $raw=~s/\f\r/\n/gs; 390: $raw=~s/\r\n/\n/gs; $raw=~s/\n\r/\n/gs; 391: $raw=~s/\f/\n/gs; $raw=~s/\r/\n/gs; 392: $raw=~s/\&\#10\;/\n/gs; $raw=~s/\&\#13\;/\n/gs; 393: 394: # Generate empty tags, remove wrong end tags 395: $raw=~s/\<(br|hr|img|meta|allow|basefont)([^\>\/]*?)\>/\<$1$2 \/\>/gis; 396: $raw=~s/\<\/(br|hr|img|meta|allow|basefont)\>//gis; 397: unless ($full) { 398: $raw=~s/\<[\/]*(body|head|html)\>//gis; 399: } 400: # Make standard tags lowercase 401: foreach ('html','body','head','meta','h1','h2','h3','h4','b','i','m', 402: 'table','tr','td','th','p','br','hr','img','embed','font', 403: 'a','strong','center','title','basefont','li','ol','ul', 404: 'input','select','form','option','script','pre') { 405: $raw=~s/\<$_\s*\>/\<$_\>/gis; 406: $raw=~s/\<\/$_\s*\>/<\/$_\>/gis; 407: $raw=~s/\<$_\s([^\>]*)\>/<$_ $1\>/gis; 408: } 409: return $raw; 410: } 411: 412: sub latex_special_symbols { 413: my ($string,$where)=@_; 414: if ($where eq 'header') { 415: $string =~ s/(\\|_|\^)/ /g; 416: $string =~ s/(\$|%|\{|\})/\\$1/g; 417: $string =~ s/_/ /g; 418: $string=&Apache::lonprintout::character_chart($string); 419: # any & or # leftover should be safe to just escape 420: $string=~s/([^\\])\&/$1\\\&/g; 421: $string=~s/([^\\])\#/$1\\\#/g; 422: } else { 423: $string=~s/\\/\\ensuremath{\\backslash}/g; 424: $string=~s/\\\%|\%/\\\%/g; 425: $string=~s/\\{|{/\\{/g; 426: $string=~s/\\}|}/\\}/g; 427: $string=~s/\\\$|\$/\\\$/g; 428: $string=~s/\\\_|\_/\\\_/g; 429: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g; 430: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less 431: $string=&Apache::lonprintout::character_chart($string); 432: # any & or # leftover should be safe to just escape 433: $string=~s/\\\&|\&/\\\&/g; 434: $string=~s/\\\#|\#/\\\#/g; 435: $string=~s/\|/\$\\mid\$/g; 436: #single { or } How to escape? 437: } 438: return $string; 439: } 440: 441: sub inner_xmlparse { 442: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_; 443: my $finaloutput = ''; 444: my $result; 445: my $token; 446: my $dontpop=0; 447: while ( $#$pars > -1 ) { 448: while ($token = $$pars['-1']->get_token) { 449: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) { 450: if ($metamode<1) { 451: my $text=$token->[1]; 452: if ($token->[0] eq 'C' && $target eq 'tex') { 453: $text = ''; 454: # $text = '%'.$text."\n"; 455: } 456: $result.=$text; 457: } 458: } elsif (($token->[0] eq 'D')) { 459: if ($metamode<1 && $target eq 'web') { 460: my $text=$token->[1]; 461: $result.=$text; 462: } 463: } elsif ($token->[0] eq 'PI') { 464: if ($metamode<1 && $target eq 'web') { 465: $result=$token->[2]; 466: } 467: } elsif ($token->[0] eq 'S') { 468: # add tag to stack 469: push (@$stack,$token->[1]); 470: # add parameters list to another stack 471: push (@$parstack,&parstring($token)); 472: &increasedepth($token); 473: if ($Apache::lonxml::usestyle && 474: exists($$style_for_target{$token->[1]})) { 475: $Apache::lonxml::usestyle=0; 476: my $string=$$style_for_target{$token->[1]}. 477: '<LONCAPA_INTERNAL_TURN_STYLE_ON />'; 478: &Apache::lonxml::newparser($pars,\$string); 479: $Apache::lonxml::style_values=$$parstack[-1]; 480: $Apache::lonxml::style_end_values=$$parstack[-1]; 481: } else { 482: $result = &callsub("start_$token->[1]", $target, $token, $stack, 483: $parstack, $pars, $safeeval, $style_for_target); 484: } 485: } elsif ($token->[0] eq 'E') { 486: if ($Apache::lonxml::usestyle && 487: exists($$style_for_target{'/'."$token->[1]"})) { 488: $Apache::lonxml::usestyle=0; 489: my $string=$$style_for_target{'/'.$token->[1]}. 490: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />'; 491: &Apache::lonxml::newparser($pars,\$string); 492: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values; 493: $Apache::lonxml::style_end_values=''; 494: $dontpop=1; 495: } else { 496: #clear out any tags that didn't end 497: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) { 498: my $lasttag=$$stack[-1]; 499: if ($token->[1] =~ /^\Q$lasttag\E$/i) { 500: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>'); 501: last; 502: } else { 503: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file'); 504: &end_tag($stack,$parstack,$token); 505: } 506: } 507: $result = &callsub("end_$token->[1]", $target, $token, $stack, 508: $parstack, $pars,$safeeval, $style_for_target); 509: } 510: } else { 511: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:"); 512: } 513: #evaluate variable refs in result 514: if ($Apache::lonxml::post_evaluate &&$result ne "") { 515: my $extras; 516: if (!$Apache::lonxml::usestyle) { 517: $extras=$Apache::lonxml::style_values; 518: } 519: if ( $#$parstack > -1 ) { 520: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]); 521: } else { 522: $result= &Apache::run::evaluate($result,$safeeval,$extras); 523: } 524: } 525: $Apache::lonxml::post_evaluate=1; 526: 527: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) { 528: #Style file definitions should be correct 529: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) { 530: $result=&latex_special_symbols($result); 531: } 532: } 533: 534: if ($Apache::lonxml::redirection) { 535: $Apache::lonxml::outputstack['-1'] .= $result; 536: } else { 537: $finaloutput.=$result; 538: } 539: $result = ''; 540: 541: if ($token->[0] eq 'E' && !$dontpop) { 542: &end_tag($stack,$parstack,$token); 543: } 544: $dontpop=0; 545: } 546: if ($#$pars > -1) { 547: pop @$pars; 548: pop @Apache::lonxml::pwd; 549: } 550: } 551: 552: # if ($target eq 'meta') { 553: # $finaloutput.=&endredirection; 554: # } 555: 556: 557: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) { 558: $finaloutput=&afterburn($finaloutput); 559: } 560: return $finaloutput; 561: } 562: 563: ## 564: ## Looks to see if there is a subroutine defined for this tag. If so, call it, 565: ## otherwise do not call it as we do not know what it is. 566: ## 567: sub callsub { 568: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 569: my $currentstring=''; 570: my $nodefault; 571: { 572: my $sub1; 573: no strict 'refs'; 574: my $tag=$token->[1]; 575: # get utterly rid of extended html tags 576: if ($tag=~/^x\-/i) { return ''; } 577: my $space=$Apache::lonxml::alltags{$tag}[-1]; 578: if (!$space) { 579: $tag=~tr/A-Z/a-z/; 580: $sub=~tr/A-Z/a-z/; 581: $space=$Apache::lonxml::alltags{$tag}[-1] 582: } 583: 584: my $deleted=0; 585: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter); 586: if (($token->[0] eq 'S') && ($target eq 'modified')) { 587: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack, 588: $parstack,$parser,$safeeval, 589: $style); 590: } 591: if (!$deleted) { 592: if ($space) { 593: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode"); 594: $sub1="$space\:\:$sub"; 595: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack, 596: $parstack,$parser,$safeeval, 597: $style); 598: } else { 599: if ($target eq 'tex') { 600: # throw away tag name 601: return ''; 602: } 603: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode"); 604: if ($metamode <1) { 605: if (defined($token->[4]) && ($metamode < 1)) { 606: $currentstring = $token->[4]; 607: } else { 608: $currentstring = $token->[2]; 609: } 610: } 611: } 612: # &Apache::lonxml::debug("nodefalt:$nodefault:"); 613: if ($currentstring eq '' && $nodefault eq '') { 614: if ($target eq 'edit') { 615: #&Apache::lonxml::debug("doing default edit for $token->[1]"); 616: if ($token->[0] eq 'S') { 617: $currentstring = &Apache::edit::tag_start($target,$token); 618: } elsif ($token->[0] eq 'E') { 619: $currentstring = &Apache::edit::tag_end($target,$token); 620: } 621: } elsif ($target eq 'modified') { 622: if ($token->[0] eq 'S') { 623: $currentstring = $token->[4]; 624: $currentstring.=&Apache::edit::handle_insert(); 625: } elsif ($token->[0] eq 'E') { 626: $currentstring = $token->[2]; 627: $currentstring.=&Apache::edit::handle_insertafter($token->[1]); 628: } else { 629: $currentstring = $token->[2]; 630: } 631: } 632: } 633: } 634: use strict 'refs'; 635: } 636: return $currentstring; 637: } 638: 639: sub setup_globals { 640: my ($request,$target)=@_; 641: $Apache::lonxml::request=$request; 642: $Apache::lonxml::registered = 0; 643: @Apache::lonxml::htmlareafields=(); 644: $errorcount=0; 645: $warningcount=0; 646: $Apache::lonxml::default_homework_loaded=0; 647: $Apache::lonxml::usestyle=1; 648: &init_counter(); 649: @Apache::lonxml::pwd=(); 650: @Apache::lonxml::extlinks=(); 651: @Apache::lonxml::ssi_info=(); 652: $Apache::lonxml::post_evaluate=1; 653: $Apache::lonxml::warnings_error_header=''; 654: if ($target eq 'meta') { 655: $Apache::lonxml::redirection = 0; 656: $Apache::lonxml::metamode = 1; 657: $Apache::lonxml::evaluate = 1; 658: $Apache::lonxml::import = 0; 659: } elsif ($target eq 'answer') { 660: $Apache::lonxml::redirection = 0; 661: $Apache::lonxml::metamode = 1; 662: $Apache::lonxml::evaluate = 1; 663: $Apache::lonxml::import = 1; 664: } elsif ($target eq 'grade') { 665: &startredirection; 666: $Apache::lonxml::metamode = 0; 667: $Apache::lonxml::evaluate = 1; 668: $Apache::lonxml::import = 1; 669: } elsif ($target eq 'modified') { 670: $Apache::lonxml::redirection = 0; 671: $Apache::lonxml::metamode = 0; 672: $Apache::lonxml::evaluate = 0; 673: $Apache::lonxml::import = 0; 674: } elsif ($target eq 'edit') { 675: $Apache::lonxml::redirection = 0; 676: $Apache::lonxml::metamode = 0; 677: $Apache::lonxml::evaluate = 0; 678: $Apache::lonxml::import = 0; 679: } elsif ($target eq 'analyze') { 680: $Apache::lonxml::redirection = 0; 681: $Apache::lonxml::metamode = 0; 682: $Apache::lonxml::evaluate = 1; 683: $Apache::lonxml::import = 1; 684: } else { 685: $Apache::lonxml::redirection = 0; 686: $Apache::lonxml::metamode = 0; 687: $Apache::lonxml::evaluate = 1; 688: $Apache::lonxml::import = 1; 689: } 690: } 691: 692: sub init_safespace { 693: my ($target,$safeeval,$safehole,$safeinit) = @_; 694: $safeeval->permit("entereval"); 695: $safeeval->permit(":base_math"); 696: $safeeval->permit("sort"); 697: $safeeval->permit("time"); 698: $safeeval->deny("rand"); 699: $safeeval->deny("srand"); 700: $safeeval->deny(":base_io"); 701: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse'); 702: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart'); 703: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT'); 704: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval, 705: '&chem_standard_order'); 706: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status'); 707: 708: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin'); 709: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos'); 710: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan'); 711: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh'); 712: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh'); 713: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh'); 714: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh'); 715: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh'); 716: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh'); 717: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf'); 718: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc'); 719: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0'); 720: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1'); 721: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn'); 722: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv'); 723: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0'); 724: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1'); 725: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn'); 726: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv'); 727: 728: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' ); 729: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' ); 730: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' ); 731: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' ); 732: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' ); 733: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc'); 734: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri'); 735: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' ); 736: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' ); 737: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' ); 738: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' ); 739: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' ); 740: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' ); 741: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc'); 742: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri'); 743: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' ); 744: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' ); 745: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' ); 746: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' ); 747: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' ); 748: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' ); 749: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri'); 750: 751: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract'); 752: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd'); 753: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub'); 754: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul'); 755: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv'); 756: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid'); 757: 758: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta'); 759: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square'); 760: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential'); 761: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f'); 762: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma'); 763: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal'); 764: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial'); 765: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square'); 766: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f'); 767: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal'); 768: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation'); 769: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index'); 770: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform'); 771: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson'); 772: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer'); 773: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial'); 774: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial'); 775: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase'); 776: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase'); 777: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed'); 778: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed'); 779: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR'); 780: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG'); 781: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange'); 782: 783: #need to inspect this class of ops 784: # $safeeval->deny(":base_orig"); 785: $safeeval->permit("require"); 786: $safeinit .= ';$external::target="'.$target.'";'; 787: &Apache::run::run($safeinit,$safeeval); 788: &initialize_rndseed($safeeval); 789: } 790: 791: sub initialize_rndseed { 792: my ($safeeval)=@_; 793: my $rndseed; 794: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); 795: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name); 796: my $safeinit = '$external::randomseed="'.$rndseed.'";'; 797: &Apache::lonxml::debug("Setting rndseed to $rndseed"); 798: &Apache::run::run($safeinit,$safeeval); 799: } 800: 801: sub default_homework_load { 802: my ($safeeval)=@_; 803: &Apache::lonxml::debug('Loading default_homework'); 804: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm'); 805: if ($default eq -1) { 806: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>"); 807: } else { 808: &Apache::run::run($default,$safeeval); 809: $Apache::lonxml::default_homework_loaded=1; 810: } 811: } 812: 813: { 814: my $alarm_depth; 815: sub init_alarm { 816: alarm(0); 817: $alarm_depth=0; 818: } 819: 820: sub start_alarm { 821: if ($alarm_depth<1) { 822: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'}); 823: if ($old) { 824: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur."); 825: } 826: } 827: $alarm_depth++; 828: } 829: 830: sub end_alarm { 831: $alarm_depth--; 832: if ($alarm_depth<1) { alarm(0); } 833: } 834: } 835: my $metamode_was; 836: sub startredirection { 837: if (!$Apache::lonxml::redirection) { 838: $metamode_was=$Apache::lonxml::metamode; 839: } 840: $Apache::lonxml::metamode=0; 841: $Apache::lonxml::redirection++; 842: push (@Apache::lonxml::outputstack, ''); 843: } 844: 845: sub endredirection { 846: if (!$Apache::lonxml::redirection) { 847: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller); 848: return ''; 849: } 850: $Apache::lonxml::redirection--; 851: if (!$Apache::lonxml::redirection) { 852: $Apache::lonxml::metamode=$metamode_was; 853: } 854: pop @Apache::lonxml::outputstack; 855: } 856: 857: sub end_tag { 858: my ($tagstack,$parstack,$token)=@_; 859: pop(@$tagstack); 860: pop(@$parstack); 861: &decreasedepth($token); 862: } 863: 864: sub initdepth { 865: @Apache::lonxml::depthcounter=(); 866: $Apache::lonxml::depth=-1; 867: $Apache::lonxml::olddepth=-1; 868: } 869: 870: my @timers; 871: my $lasttime; 872: sub increasedepth { 873: my ($token) = @_; 874: $Apache::lonxml::depth++; 875: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++; 876: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) { 877: $Apache::lonxml::olddepth=$Apache::lonxml::depth; 878: } 879: my $time; 880: if ($Apache::lonxml::debug eq "1") { 881: push(@timers,[&gettimeofday()]); 882: $time=&tv_interval($lasttime); 883: $lasttime=[&gettimeofday()]; 884: } 885: my $spacing=' 'x($Apache::lonxml::depth-1); 886: my $curdepth=join('_',@Apache::lonxml::depthcounter); 887: &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : \n"); 888: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n"; 889: } 890: 891: sub decreasedepth { 892: my ($token) = @_; 893: $Apache::lonxml::depth--; 894: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) { 895: $#Apache::lonxml::depthcounter--; 896: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1; 897: } 898: if ( $Apache::lonxml::depth < -1) { 899: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file.")); 900: $Apache::lonxml::depth='-1'; 901: } 902: my ($timer,$time); 903: if ($Apache::lonxml::debug eq "1") { 904: $timer=pop(@timers); 905: $time=&tv_interval($lasttime); 906: $lasttime=[&gettimeofday()]; 907: } 908: my $spacing=' 'x$Apache::lonxml::depth; 909: my $curdepth=join('_',@Apache::lonxml::depthcounter); 910: &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : ".&tv_interval($timer)."\n"); 911: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n"; 912: } 913: 914: sub get_all_text_unbalanced { 915: #there is a copy of this in lonpublisher.pm 916: my($tag,$pars)= @_; 917: my $token; 918: my $result=''; 919: $tag='<'.$tag.'>'; 920: while ($token = $$pars[-1]->get_token) { 921: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { 922: $result.=$token->[1]; 923: } elsif ($token->[0] eq 'PI') { 924: $result.=$token->[2]; 925: } elsif ($token->[0] eq 'S') { 926: $result.=$token->[4]; 927: } elsif ($token->[0] eq 'E') { 928: $result.=$token->[2]; 929: } 930: if ($result =~ /\Q$tag\E/is) { 931: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is; 932: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2); 933: #&Apache::lonxml::debug('Result is :'.$1); 934: $redo=$tag.$redo; 935: &Apache::lonxml::newparser($pars,\$redo); 936: last; 937: } 938: } 939: return $result 940: } 941: 942: sub increment_counter { 943: my ($increment) = @_; 944: if (defined($increment) && $increment gt 0) { 945: $Apache::lonxml::counter+=$increment; 946: } else { 947: $Apache::lonxml::counter++; 948: } 949: $Apache::lonxml::counter_changed=1; 950: } 951: 952: sub init_counter { 953: if (defined($env{'form.counter'})) { 954: $Apache::lonxml::counter=$env{'form.counter'}; 955: $Apache::lonxml::counter_changed=0; 956: } else { 957: $Apache::lonxml::counter=1; 958: $Apache::lonxml::counter_changed=1; 959: } 960: } 961: 962: sub store_counter { 963: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter)); 964: return ''; 965: } 966: 967: sub get_all_text { 968: my($tag,$pars,$style)= @_; 969: my $gotfullstack=1; 970: if (ref($pars) ne 'ARRAY') { 971: $gotfullstack=0; 972: $pars=[$pars]; 973: } 974: if (ref($style) ne 'HASH') { 975: $style={}; 976: } 977: my $depth=0; 978: my $token; 979: my $result=''; 980: if ( $tag =~ m:^/: ) { 981: my $tag=substr($tag,1); 982: #&Apache::lonxml::debug("have:$tag:"); 983: my $top_empty=0; 984: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) { 985: while (($depth >=0) && ($token = $$pars[-1]->get_token)) { 986: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd); 987: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { 988: $result.=$token->[1]; 989: } elsif ($token->[0] eq 'PI') { 990: $result.=$token->[2]; 991: } elsif ($token->[0] eq 'S') { 992: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; } 993: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; } 994: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; } 995: $result.=$token->[4]; 996: } elsif ($token->[0] eq 'E') { 997: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; } 998: #skip sending back the last end tag 999: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) { 1000: my $string= 1001: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'. 1002: $$style{'/'.$token->[1]}. 1003: $token->[2]. 1004: '<LONCAPA_INTERNAL_TURN_STYLE_ON />'; 1005: &Apache::lonxml::newparser($pars,\$string); 1006: #&Apache::lonxml::debug("reParsing $string"); 1007: next; 1008: } 1009: if ($depth > -1) { 1010: $result.=$token->[2]; 1011: } else { 1012: $$pars[-1]->unget_token($token); 1013: } 1014: } 1015: } 1016: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; } 1017: if (($depth >=0) && ($#$pars > 0) ) { 1018: pop(@$pars); 1019: pop(@Apache::lonxml::pwd); 1020: } 1021: } 1022: if ($top_empty && $depth >= 0) { 1023: #never found the end tag ran out of text, throw error send back blank 1024: &error('Never found end tag for <'.$tag. 1025: '> current string <pre>'. 1026: &HTML::Entities::encode($result,'<>&"'). 1027: '</pre>'); 1028: if ($gotfullstack) { 1029: my $newstring='</'.$tag.'>'.$result; 1030: &Apache::lonxml::newparser($pars,\$newstring); 1031: } 1032: $result=''; 1033: } 1034: } else { 1035: while ($#$pars > -1) { 1036: while ($token = $$pars[-1]->get_token) { 1037: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]"); 1038: if (($token->[0] eq 'T')||($token->[0] eq 'C')|| 1039: ($token->[0] eq 'D')) { 1040: $result.=$token->[1]; 1041: } elsif ($token->[0] eq 'PI') { 1042: $result.=$token->[2]; 1043: } elsif ($token->[0] eq 'S') { 1044: if ( $token->[1] =~ /^\Q$tag\E$/i) { 1045: $$pars[-1]->unget_token($token); last; 1046: } else { 1047: $result.=$token->[4]; 1048: } 1049: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; } 1050: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; } 1051: } elsif ($token->[0] eq 'E') { 1052: $result.=$token->[2]; 1053: } 1054: } 1055: if (($#$pars > 0) ) { 1056: pop(@$pars); 1057: pop(@Apache::lonxml::pwd); 1058: } else { last; } 1059: } 1060: } 1061: #&Apache::lonxml::debug("Exit:$result:"); 1062: return $result 1063: } 1064: 1065: sub newparser { 1066: my ($parser,$contentref,$dir) = @_; 1067: push (@$parser,HTML::LCParser->new($contentref)); 1068: $$parser[-1]->xml_mode(1); 1069: $$parser[-1]->marked_sections(1); 1070: if ( $dir eq '' ) { 1071: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]); 1072: } else { 1073: push (@Apache::lonxml::pwd, $dir); 1074: } 1075: } 1076: 1077: sub parstring { 1078: my ($token) = @_; 1079: my $temp=''; 1080: foreach (@{$token->[3]}) { 1081: unless ($_=~/\W/) { 1082: my $val=$token->[2]->{$_}; 1083: $val =~ s/([\%\@\\\"\'])/\\$1/g; 1084: $val =~ s/(\$[^{a-zA-Z_])/\\$1/g; 1085: $val =~ s/(\$)$/\\$1/; 1086: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; } 1087: $temp .= "my \$$_=\"$val\";"; 1088: } 1089: } 1090: return $temp; 1091: } 1092: 1093: sub writeallows { 1094: unless ($#extlinks>=0) { return; } 1095: my $thisurl='/res/'.&Apache::lonnet::declutter(shift); 1096: if ($env{'httpref.'.$thisurl}) { 1097: $thisurl=$env{'httpref.'.$thisurl}; 1098: } 1099: my $thisdir=$thisurl; 1100: $thisdir=~s/\/[^\/]+$//; 1101: my %httpref=(); 1102: foreach (@extlinks) { 1103: $httpref{'httpref.'. 1104: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl; 1105: } 1106: @extlinks=(); 1107: &Apache::lonnet::appenv(%httpref); 1108: } 1109: 1110: sub register_ssi { 1111: my ($url,%form)=@_; 1112: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form}); 1113: return ''; 1114: } 1115: 1116: sub do_registered_ssi { 1117: foreach my $info (@Apache::lonxml::ssi_info) { 1118: my %form=%{ $info->{'form'}}; 1119: my $url=$info->{'url'}; 1120: &Apache::lonnet::ssi($url,%form); 1121: } 1122: } 1123: # 1124: # Afterburner handles anchors, highlights and links 1125: # 1126: sub afterburn { 1127: my $result=shift; 1128: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, 1129: ['highlight','anchor','link']); 1130: if ($env{'form.highlight'}) { 1131: foreach (split(/\,/,$env{'form.highlight'})) { 1132: my $anchorname=$_; 1133: my $matchthis=$anchorname; 1134: $matchthis=~s/\_+/\\s\+/g; 1135: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs; 1136: } 1137: } 1138: if ($env{'form.link'}) { 1139: foreach (split(/\,/,$env{'form.link'})) { 1140: my ($anchorname,$linkurl)=split(/\>/,$_); 1141: my $matchthis=$anchorname; 1142: $matchthis=~s/\_+/\\s\+/g; 1143: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs; 1144: } 1145: } 1146: if ($env{'form.anchor'}) { 1147: my $anchorname=$env{'form.anchor'}; 1148: my $matchthis=$anchorname; 1149: $matchthis=~s/\_+/\\s\+/g; 1150: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s; 1151: $result.=(<<"ENDSCRIPT"); 1152: <script type="text/javascript"> 1153: document.location.hash='$anchorname'; 1154: </script> 1155: ENDSCRIPT 1156: } 1157: return $result; 1158: } 1159: 1160: sub storefile { 1161: my ($file,$contents)=@_; 1162: &Apache::lonnet::correct_line_ends(\$contents); 1163: if (my $fh=Apache::File->new('>'.$file)) { 1164: print $fh $contents; 1165: $fh->close(); 1166: return 1; 1167: } else { 1168: &warning("Unable to save file $file"); 1169: return 0; 1170: } 1171: } 1172: 1173: sub createnewhtml { 1174: my $title=&mt('Title of document goes here'); 1175: my $body=&mt('Body of document goes here'); 1176: my $filecontents=(<<SIMPLECONTENT); 1177: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml/11/DTD/xhtml11.dtd"> 1178: <html> 1179: <head> 1180: <title>$title</title> 1181: </head> 1182: <body bgcolor="#FFFFFF"> 1183: $body 1184: </body> 1185: </html> 1186: SIMPLECONTENT 1187: return $filecontents; 1188: } 1189: 1190: sub createnewsty { 1191: my $filecontents=(<<SIMPLECONTENT); 1192: <definetag name=""> 1193: <render> 1194: <web></web> 1195: <tex></tex> 1196: </render> 1197: </definetag> 1198: SIMPLECONTENT 1199: return $filecontents; 1200: } 1201: 1202: 1203: sub inserteditinfo { 1204: my ($result,$filecontents,$filetype)=@_; 1205: $filecontents = &HTML::Entities::encode($filecontents,'<>&"'); 1206: # my $editheader='<a href="#editsection">Edit below</a><hr />'; 1207: my $xml_help = ''; 1208: my $initialize=''; 1209: if ($filetype eq 'html') { 1210: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons(); 1211: $initialize=&Apache::lonhtmlcommon::htmlareaheaders(). 1212: &Apache::lonhtmlcommon::spellheader(); 1213: if (!&Apache::lonhtmlcommon::htmlareablocked() && 1214: &Apache::lonhtmlcommon::htmlareabrowser()) { 1215: $initialize.=(<<FULLPAGE); 1216: <script type="text/javascript"> 1217: $addbuttons 1218: 1219: HTMLArea.loadPlugin("FullPage"); 1220: 1221: function initDocument() { 1222: var editor=new HTMLArea("filecont",config); 1223: editor.registerPlugin(FullPage); 1224: editor.generate(); 1225: } 1226: </script> 1227: FULLPAGE 1228: } else { 1229: $initialize.=(<<FULLPAGE); 1230: <script type="text/javascript"> 1231: $addbuttons 1232: function initDocument() { 1233: } 1234: </script> 1235: FULLPAGE 1236: } 1237: $result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i; 1238: $xml_help=&Apache::loncommon::helpLatexCheatsheet(); 1239: } 1240: my $cleanbut = ''; 1241: if ($filetype eq 'html') { 1242: $cleanbut='<input type="submit" name="attemptclean" value="'. 1243: &mt('Save and then attempt to clean HTML').'" />'; 1244: } 1245: my $titledisplay=&display_title(); 1246: my %lt=&Apache::lonlocal::texthash('st' => 'Save this', 1247: 'vi' => 'View', 1248: 'ed' => 'Edit'); 1249: my $buttons=(<<BUTTONS); 1250: $cleanbut 1251: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" /> 1252: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" /> 1253: BUTTONS 1254: $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont'); 1255: $buttons.=&Apache::lonhtmlcommon::htmlareaselectactive('filecont'); 1256: my $editfooter=(<<ENDFOOTER); 1257: $initialize 1258: <hr /> 1259: <a name="editsection" /> 1260: <form method="post" name="xmledit"> 1261: $xml_help 1262: <input type="hidden" name="editmode" value="$lt{'ed'}" /> 1263: $buttons<br /> 1264: <textarea style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea> 1265: <br />$buttons 1266: <br /> 1267: </form> 1268: $titledisplay 1269: </body> 1270: ENDFOOTER 1271: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is; 1272: $result=~s/(\<\/body\>)/$editfooter/is; 1273: return $result; 1274: } 1275: 1276: sub get_target { 1277: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'}); 1278: if ( $env{'request.state'} eq 'published') { 1279: if ( defined($env{'form.grade_target'}) 1280: && ($viewgrades == 'F' )) { 1281: return ($env{'form.grade_target'}); 1282: } elsif (defined($env{'form.grade_target'})) { 1283: if (($env{'form.grade_target'} eq 'web') || 1284: ($env{'form.grade_target'} eq 'tex') ) { 1285: return $env{'form.grade_target'} 1286: } else { 1287: return 'web'; 1288: } 1289: } else { 1290: return 'web'; 1291: } 1292: } elsif ($env{'request.state'} eq 'construct') { 1293: if ( defined($env{'form.grade_target'})) { 1294: return ($env{'form.grade_target'}); 1295: } else { 1296: return 'web'; 1297: } 1298: } else { 1299: return 'web'; 1300: } 1301: } 1302: 1303: sub handler { 1304: my $request=shift; 1305: 1306: my $target=&get_target(); 1307: 1308: $Apache::lonxml::debug=$env{'user.debug'}; 1309: 1310: &Apache::loncommon::content_type($request,'text/html'); 1311: &Apache::loncommon::no_cache($request); 1312: if ($env{'request.state'} eq 'published') { 1313: $request->set_last_modified(&Apache::lonnet::metadata($request->uri, 1314: 'lastrevisiondate')); 1315: } 1316: $request->send_http_header; 1317: 1318: return OK if $request->header_only; 1319: 1320: 1321: my $file=&Apache::lonnet::filelocation("",$request->uri); 1322: my $filetype; 1323: if ($file =~ /\.sty$/) { 1324: $filetype='sty'; 1325: } else { 1326: $filetype='html'; 1327: } 1328: # 1329: # Edit action? Save file. 1330: # 1331: unless ($env{'request.state'} eq 'published') { 1332: if (($env{'form.savethisfile'}) || ($env{'form.attemptclean'})) { 1333: if (&storefile($file,$env{'form.filecont'})) { 1334: &Apache::lonxml::info("<font COLOR=\"#0000FF\">". 1335: &mt('Updated').": ". 1336: &Apache::lonlocal::locallocaltime(time). 1337: " </font>"); 1338: } 1339: } 1340: } 1341: my %mystyle; 1342: my $result = ''; 1343: my $filecontents=&Apache::lonnet::getfile($file); 1344: if ($filecontents eq -1) { 1345: my $bodytag=&Apache::loncommon::bodytag('File Error'); 1346: my $fnf=&mt('File not found'); 1347: $result=(<<ENDNOTFOUND); 1348: <html> 1349: <head> 1350: <title>$fnf</title> 1351: </head> 1352: $bodytag 1353: <b>$fnf: $file</b> 1354: </body> 1355: </html> 1356: ENDNOTFOUND 1357: $filecontents=''; 1358: if ($env{'request.state'} ne 'published') { 1359: if ($filetype eq 'sty') { 1360: $filecontents=&createnewsty(); 1361: } else { 1362: $filecontents=&createnewhtml(); 1363: } 1364: $env{'form.editmode'}='Edit'; #force edit mode 1365: } 1366: } else { 1367: unless ($env{'request.state'} eq 'published') { 1368: if ($filecontents=~/BEGIN LON-CAPA Internal/) { 1369: &Apache::lonxml::error(&mt('This file appears to be a rendering of a Lon-CAPA resource. If this is correct, this resource will act very oddly and incorrectly.')); 1370: } 1371: 1372: if ($env{'form.attemptclean'}) { 1373: $filecontents=&htmlclean($filecontents,1); 1374: } 1375: # 1376: # we are in construction space, see if edit mode forced 1377: &Apache::loncommon::get_unprocessed_cgi 1378: ($ENV{'QUERY_STRING'},['editmode']); 1379: } 1380: if (!$env{'form.editmode'} || $env{'form.viewmode'}) { 1381: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents, 1382: '',%mystyle); 1383: undef($Apache::lonhomework::parsing_a_task); 1384: } 1385: } 1386: 1387: # 1388: # Edit action? Insert editing commands 1389: # 1390: unless ($env{'request.state'} eq 'published') { 1391: if ($env{'form.editmode'} && (!($env{'form.viewmode'}))) { 1392: my $displayfile=$request->uri; 1393: $displayfile=~s/^\/[^\/]*//; 1394: my $bodytag='<body bgcolor="#FFFFFF">'; 1395: if ($env{'environment.remote'} eq 'off') { 1396: $bodytag=&Apache::loncommon::bodytag(); 1397: } 1398: $result='<html>'.$bodytag. 1399: &Apache::lonxml::message_location().'<h3>'. 1400: $displayfile. 1401: '</h3></body></html>'; 1402: $result=&inserteditinfo($result,$filecontents,$filetype); 1403: } 1404: } 1405: if ($filetype eq 'html') { writeallows($request->uri); } 1406: 1407: 1408: &Apache::lonxml::add_messages(\$result); 1409: $request->print($result); 1410: 1411: return OK; 1412: } 1413: 1414: sub display_title { 1415: my $result; 1416: if ($env{'request.state'} eq 'construct') { 1417: my $title=&Apache::lonnet::gettitle(); 1418: if (!defined($title) || $title eq '') { 1419: $title = $env{'request.filename'}; 1420: $title = substr($title, rindex($title, '/') + 1); 1421: } 1422: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>"; 1423: } 1424: return $result; 1425: } 1426: 1427: sub debug { 1428: if ($Apache::lonxml::debug eq "1") { 1429: $|=1; 1430: my $request=$Apache::lonxml::request; 1431: if (!$request) { $request=Apache->request; } 1432: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n"); 1433: #&Apache::lonnet::logthis($_[0]); 1434: } 1435: } 1436: 1437: sub show_error_warn_msg { 1438: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' && 1439: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) { 1440: return 1; 1441: } 1442: return (($Apache::lonxml::debug eq 1) || 1443: ($env{'request.state'} eq 'construct') || 1444: ($Apache::lonhomework::browse eq 'F' 1445: && 1446: $env{'form.show_errors'} eq 'on')); 1447: } 1448: 1449: sub error { 1450: $errorcount++; 1451: if ( &show_error_warn_msg() ) { 1452: # If printing in construction space, put the error inside <pre></pre> 1453: push(@Apache::lonxml::error_messages, 1454: $Apache::lonxml::warnings_error_header. 1455: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n"); 1456: $Apache::lonxml::warnings_error_header=''; 1457: } else { 1458: my $errormsg; 1459: my ($symb)=&Apache::lonnet::symbread(); 1460: if ( !$symb ) { 1461: #public or browsers 1462: $errormsg=&mt("An error occured while processing this resource. The author has been notified."); 1463: } 1464: #notify author 1465: &Apache::lonmsg::author_res_msg($env{'request.filename'},join('<br />',@_)); 1466: #notify course 1467: if ( $symb && $env{'request.course.id'} ) { 1468: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1); 1469: my $declutter=&Apache::lonnet::declutter($env{'request.filename'}); 1470: my @userlist; 1471: foreach (keys %users) { 1472: my ($user,$domain) = split(/:/, $_); 1473: push(@userlist,"$user\@$domain"); 1474: &Apache::lonmsg::user_normal_msg($user,$domain, 1475: "Error [$declutter]",join('<br />',@_)); 1476: } 1477: if ($env{'request.role.adv'}) { 1478: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist)); 1479: } else { 1480: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified."); 1481: } 1482: } 1483: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />"); 1484: } 1485: } 1486: 1487: sub warning { 1488: $warningcount++; 1489: 1490: if ($env{'form.grade_target'} ne 'tex') { 1491: if ( &show_error_warn_msg() ) { 1492: my $request=$Apache::lonxml::request; 1493: if (!$request) { $request=Apache->request; } 1494: push(@Apache::lonxml::warning_messages, 1495: $Apache::lonxml::warnings_error_header. 1496: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n"); 1497: $Apache::lonxml::warnings_error_header=''; 1498: } 1499: } 1500: } 1501: 1502: sub info { 1503: if ($env{'form.grade_target'} ne 'tex' 1504: && $env{'request.state'} eq 'construct') { 1505: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n"); 1506: } 1507: } 1508: 1509: sub message_location { 1510: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__'; 1511: } 1512: 1513: sub add_messages { 1514: my ($msg)=@_; 1515: my $result=join(' ', 1516: @Apache::lonxml::info_messages, 1517: @Apache::lonxml::error_messages, 1518: @Apache::lonxml::warning_messages); 1519: undef(@Apache::lonxml::info_messages); 1520: undef(@Apache::lonxml::error_messages); 1521: undef(@Apache::lonxml::warning_messages); 1522: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/; 1523: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g; 1524: } 1525: 1526: sub get_param { 1527: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_; 1528: if ( ! $context ) { $context = -1; } 1529: my $args =''; 1530: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; } 1531: if ( ! $Apache::lonxml::usestyle ) { 1532: $args=$Apache::lonxml::style_values.$args; 1533: } 1534: if ( ! $args ) { return undef; } 1535: if ( $case_insensitive ) { 1536: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) { 1537: return &Apache::run::run("{$args;".'return $'.$param.'}', 1538: $safeeval); #' 1539: } else { 1540: return undef; 1541: } 1542: } else { 1543: if ( $args =~ /my \$\Q$param\E=\"/ ) { 1544: return &Apache::run::run("{$args;".'return $'.$param.'}', 1545: $safeeval); #' 1546: } else { 1547: return undef; 1548: } 1549: } 1550: } 1551: 1552: sub get_param_var { 1553: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_; 1554: if ( ! $context ) { $context = -1; } 1555: my $args =''; 1556: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; } 1557: if ( ! $Apache::lonxml::usestyle ) { 1558: $args=$Apache::lonxml::style_values.$args; 1559: } 1560: &Apache::lonxml::debug("Args are $args param is $param"); 1561: if ($case_insensitive) { 1562: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) { 1563: return undef; 1564: } 1565: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; } 1566: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #' 1567: &Apache::lonxml::debug("first run is $value"); 1568: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) { 1569: &Apache::lonxml::debug("doing second"); 1570: my @result=&Apache::run::run("return $value",$safeeval,1); 1571: if (!defined($result[0])) { 1572: return $value 1573: } else { 1574: if (wantarray) { return @result; } else { return $result[0]; } 1575: } 1576: } else { 1577: return $value; 1578: } 1579: } 1580: 1581: sub register_insert { 1582: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab'); 1583: my $i; 1584: my $tagnum=0; 1585: my @order; 1586: for ($i=0;$i < $#data; $i++) { 1587: my $line = $data[$i]; 1588: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; } 1589: if ( $line =~ /TABLE/ ) { last; } 1590: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line); 1591: if ($tag) { 1592: $insertlist{"$tagnum.tag"} = $tag; 1593: $insertlist{"$tagnum.description"} = $descrip; 1594: $insertlist{"$tagnum.color"} = $color; 1595: $insertlist{"$tagnum.function"} = $function; 1596: if (!defined($show)) { $show='yes'; } 1597: $insertlist{"$tagnum.show"}= $show; 1598: $insertlist{"$tagnum.helpfile"} = $helpfile; 1599: $insertlist{"$tagnum.helpdesc"} = $helpdesc; 1600: $insertlist{"$tag.num"}=$tagnum; 1601: $tagnum++; 1602: } 1603: } 1604: $i++; #skipping TABLE line 1605: $tagnum = 0; 1606: for (;$i < $#data;$i++) { 1607: my $line = $data[$i]; 1608: my ($mnemonic,@which) = split(/ +/,$line); 1609: my $tag = $insertlist{"$tagnum.tag"}; 1610: for (my $j=0;$j <=$#which;$j++) { 1611: if ( $which[$j] eq 'Y' ) { 1612: if ($insertlist{"$j.show"} ne 'no') { 1613: push(@{ $insertlist{"$tag.which"} },$j); 1614: } 1615: } 1616: } 1617: $tagnum++; 1618: } 1619: } 1620: 1621: sub description { 1622: my ($token)=@_; 1623: my $tagnum; 1624: my $tag=$token->[1]; 1625: foreach my $namespace (reverse @Apache::lonxml::namespace) { 1626: my $testtag=$namespace.'::'.$tag; 1627: $tagnum=$insertlist{"$testtag.num"}; 1628: if (defined($tagnum)) { last; } 1629: } 1630: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; } 1631: return $insertlist{$tagnum.'.description'}; 1632: } 1633: 1634: # Returns a list containing the help file, and the description 1635: sub helpinfo { 1636: my ($token)=@_; 1637: my $tagnum; 1638: my $tag=$token->[1]; 1639: foreach my $namespace (reverse @Apache::lonxml::namespace) { 1640: my $testtag=$namespace.'::'.$tag; 1641: $tagnum=$insertlist{"$testtag.num"}; 1642: if (defined($tagnum)) { last; } 1643: } 1644: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; } 1645: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'}); 1646: } 1647: 1648: # ----------------------------------------------------------------- whichuser 1649: # returns a list of $symb, $courseid, $domain, $name that is correct for 1650: # calls to lonnet functions for this setup. 1651: # - looks for form.grade_ parameters 1652: sub whichuser { 1653: my ($passedsymb)=@_; 1654: my ($symb,$courseid,$domain,$name,$publicuser); 1655: if (defined($env{'form.grade_symb'})) { 1656: my ($tmp_courseid)= 1657: &Apache::loncommon::get_env_multiple('form.grade_courseid'); 1658: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid); 1659: if (!$allowed && 1660: exists($env{'request.course.sec'}) && 1661: $env{'request.course.sec'} !~ /^\s*$/) { 1662: $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid. 1663: '/'.$env{'request.course.sec'}); 1664: } 1665: if ($allowed) { 1666: ($symb)=&Apache::loncommon::get_env_multiple('form.grade_symb'); 1667: $courseid=$tmp_courseid; 1668: ($domain)=&Apache::loncommon::get_env_multiple('form.grade_domain'); 1669: ($name)=&Apache::loncommon::get_env_multiple('form.grade_username'); 1670: return ($symb,$courseid,$domain,$name,$publicuser); 1671: } 1672: } 1673: if (!$passedsymb) { 1674: $symb=&Apache::lonnet::symbread(); 1675: } else { 1676: $symb=$passedsymb; 1677: } 1678: $courseid=$env{'request.course.id'}; 1679: $domain=$env{'user.domain'}; 1680: $name=$env{'user.name'}; 1681: if ($name eq 'public' && $domain eq 'public') { 1682: if (!defined($env{'form.username'})) { 1683: $env{'form.username'}.=time.rand(10000000); 1684: } 1685: $name.=$env{'form.username'}; 1686: } 1687: return ($symb,$courseid,$domain,$name,$publicuser); 1688: } 1689: 1690: 1; 1691: __END__ 1692: 1693: