loncom/interface/lonindexer.pm - view

File: [LON-CAPA] / loncom / interface / lonindexer.pm
Revision 1.39: download - view: text, annotated - select for diffs
Tue Mar 19 19:55:52 2002 UTC (22 years, 3 months ago) by matthew
Branches: MAIN
CVS tags: HEAD

Changes to allow lonparmset to call lonindexer.  lonindexer now has a
'parmset' mode as well as the earlier added 'edit' mode.  Hopefully these
will be sufficient.  If another mode is needed perhaps a more generalized
interface should be developed.

1: # The LearningOnline Network with CAPA 2: # Directory Indexer 3: # 4: # $Id: lonindexer.pm,v 1.39 2002/03/19 19:55:52 matthew 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: # YEAR=1999 29: # 5/21/99, 5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14 Gerd Kortemeyer) 30: # 11/23 Gerd Kortemeyer 31: # YEAR=2000 32: # 07/20-08/04 H.K. Ng 33: # YEAR=2001 34: # 05/9-05/19/2001 H. K. Ng 35: # 05/21/2001 H. K. Ng 36: # 05/23/2001 H. K. Ng 37: # 5/31,6/1,6/2,6/15 Scott Harrison 38: # 6/26,7/8 H. K. Ng 39: # 8/6,8/7,8/10 Scott Harrison 40: # 8/14 H. K. Ng 41: # 8/28,10/15,11/28,11/29 Scott Harrison 42: # 11/30 Matthew Hall 43: # 12/11,12/13 Scott Harrison 44: # YEAR=2002 45: # 1/17 Scott Harrison 46: # 47: ### 48: 49: ############################################################################### 50: ## ## 51: ## ORGANIZATION OF THIS PERL MODULE ## 52: ## ## 53: ## 1. Description of functions ## 54: ## 2. Modules used by this module ## 55: ## 3. Choices for different output views (detailed, summary, xml, etc) ## 56: ## 4. BEGIN block (to be run once after compilation) ## 57: ## 5. Handling routine called via Apache and mod_perl ## 58: ## 6. Other subroutines ## 59: ## ## 60: ############################################################################### 61: 62: package Apache::lonindexer; 63: 64: # ------------------------------------------------- modules used by this module 65: use strict; 66: use Apache::lonnet(); 67: use Apache::loncommon(); 68: use Apache::Constants qw(:common); 69: use Apache::File; 70: use GDBM_File; 71: 72: # ---------------------------------------- variables used throughout the module 73: my %hash; # tied to a user-specific gdbm file 74: my %dirs; # keys are directories, values are the open/close status 75: my %language; # has the reference information present in language.tab 76: 77: # ----- Values which are set by the handler subroutine and are accessible to 78: # ----- other methods. 79: my $extrafield; # default extra table cell 80: my $fnum; # file counter 81: my $dnum; # directory counter 82: 83: # ----------------------------- Handling routine called via Apache and mod_perl 84: sub handler { 85: my $r = shift; 86: $r->content_type('text/html'); 87: $r->send_http_header; 88: return OK if $r->header_only; 89: $fnum=0; 90: $dnum=0; 91: untie %hash; 92: 93: # ------------------------------------- read in machine configuration variables 94: my $iconpath= $r->dir_config('lonIconsURL') . "/"; 95: my $domain = $r->dir_config('lonDefDomain'); 96: my $role = $r->dir_config('lonRole'); 97: my $loadlim = $r->dir_config('lonLoadLim'); 98: my $servadm = $r->dir_config('lonAdmEMail'); 99: my $sysadm = $r->dir_config('lonSysEMail'); 100: my $lonhost = $r->dir_config('lonHostID'); 101: my $tabdir = $r->dir_config('lonTabDir'); 102: 103: my $fileclr='#ffffe6'; 104: my $line; 105: my (@attrchk,@openpath); 106: my $uri=$r->uri; 107: 108: # -------------------------------------- see if called from an interactive mode 109: # Get the parameters from the query string 110: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, 111: ['catalogmode','launch','acts','mode','form','element']); 112: #------------------------------------------------------------------- 113: my $closebutton=''; 114: my $groupimportbutton=''; 115: my $colspan=''; 116: 117: $extrafield=''; 118: my $diropendb = 119: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db"; 120: 121: if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) { 122: if ($ENV{'form.launch'} eq '1') { 123: &start_fresh_session(); 124: } 125: 126: # -------------------- refresh environment with user database values (in %hash) 127: if ($hash{'mode_catalog'} eq 'interactive') { 128: $ENV{'form.catalogmode'}='interactive'; 129: } 130: if ($hash{'mode_catalog'} eq 'groupimport') { 131: $ENV{'form.catalogmode'}='groupimport'; 132: } 133: 134: # --------------------- define extra fields and buttons in case of special mode 135: if ($ENV{'form.catalogmode'} eq 'interactive') { 136: $hash{'mode_catalog'}='interactive'; 137: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'. 138: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'. 139: ' border="0" /></td>'; 140: $colspan=" colspan='2' "; 141: $closebutton=<<END; 142: <input type="button" name="close" value='CLOSE' onClick="self.close()"> 143: END 144: } 145: elsif ($ENV{'form.catalogmode'} eq 'groupimport') { 146: $hash{'mode_catalog'}='groupimport'; 147: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'. 148: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'. 149: ' border="0" /></td>'; 150: $colspan=" colspan='2' "; 151: $closebutton=<<END; 152: <input type="button" name="close" value='CLOSE' onClick="self.close()"> 153: END 154: $groupimportbutton=<<END; 155: <input type="button" name="groupimport" value='GROUP IMPORT' 156: onClick="javascript:select_group()"> 157: END 158: } 159: # Additions made by Matthew to make the browser a little easier to deal 160: # with in the future. 161: # 162: # $mode (at this time) indicates if we are in edit mode. 163: # $form is the name of the form that the URL is placed when the 164: # selection is made. 165: # $element is the name of the element in $formname which receives 166: # the URL. 167: # &Apache::lonxml::debug('Checking mode, form, element'); 168: &setvalues(\%hash,'form_mode' ,\%ENV,'form.mode' ); 169: &setvalues(\%hash,'form_form' ,\%ENV,'form.form' ); 170: &setvalues(\%hash,'form_element',\%ENV,'form.element'); 171: 172: my $mode = $ENV{'form.mode'}; 173: my ($form,$element); 174: if ($mode eq 'edit' || $mode eq 'parmset') { 175: $form = $ENV{'form.form'}; 176: $element = $ENV{'form.element'}; 177: } 178: &Apache::lonxml::debug("mode=$mode form=$form element=$element"); 179: # ------ set catalogmodefunctions to have extra needed javascript functionality 180: my $catalogmodefunctions=''; 181: if ($ENV{'form.catalogmode'} eq 'interactive' or 182: $ENV{'form.catalogmode'} eq 'groupimport') { 183: # The if statement below sets us up to use the old version 184: # by default (ie. if $mode is undefined). This is the easy 185: # way out. Hopefully in the future I'll find a way to get 186: # the calls dealt with in a more comprehensive manner. 187: if (!defined($mode) || ($mode ne 'edit' && $mode ne 'parmset')) { 188: $catalogmodefunctions=<<"END"; 189: function select_data(title,url) { 190: changeTitle(title); 191: changeURL(url); 192: self.close(); 193: } 194: function select_group() { 195: window.location="/adm/groupsort?catalogmode=groupimport&acts="+document.forms.fileattr.acts.value; 196: } 197: function changeTitle(val) { 198: if (opener.inf) { 199: if (opener.inf.document.forms.resinfo.elements.t) { 200: opener.inf.document.forms.resinfo.elements.t.value=val; 201: } 202: } 203: } 204: function changeURL(val) { 205: if (opener.inf) { 206: if (opener.inf.document.forms.resinfo.elements.u) { 207: opener.inf.document.forms.resinfo.elements.u.value=val; 208: } 209: } 210: } 211: END 212: } elsif ($mode eq 'edit') { # we are in 'edit' mode 213: $catalogmodefunctions=<<END; 214: // mode = $mode 215: function select_data(title,url) { 216: changeURL(url); 217: self.close(); 218: } 219: 220: function select_group() { 221: window.location="/adm/groupsort?catalogmode=interactive&form=$form&element=$element&mode=edit&acts="+document.forms.fileattr.acts.value; 222: } 223: 224: function changeURL(val) { 225: if (window.opener.document) { 226: window.opener.document.forms["$form"].elements["$element"].value=val; 227: } else { 228: alert("The file you selected is: "+val); 229: } 230: } 231: 232: END 233: } elsif ($mode eq 'parmset') { 234: $catalogmodefunctions=<<END; 235: // mode = $mode 236: function select_data(title,url) { 237: changeURL(url); 238: self.close(); 239: } 240: 241: function select_group() { 242: window.location="/adm/groupsort?catalogmode=interactive&form=$form&element=$element&mode=parmset&acts="+document.forms.fileattr.acts.value; 243: } 244: 245: function changeURL(val) { 246: if (window.opener.document) { 247: var elementname = "$element"+"_value"; 248: var checkboxname = "$element"+"_setparmval"; 249: window.opener.document.forms["$form"].elements[elementname].value=val; 250: window.opener.document.forms["$form"].elements[checkboxname].checked=true; 251: } else { 252: alert("The file you selected is: "+val); 253: } 254: } 255: 256: END 257: } 258: } 259: $catalogmodefunctions.=<<END; 260: var acts=''; 261: function rep_dirpath(suffix,val) { 262: eval("document.forms.dirpath"+suffix+".acts.value=val"); 263: } 264: END 265: if ($ENV{'form.catalogmode'} eq 'groupimport') { 266: $catalogmodefunctions.=<<END; 267: function queue(val) { 268: if (eval("document.forms."+val+".filelink.checked")) { 269: var l=val.length; 270: var v=val.substring(4,l); 271: document.forms.fileattr.acts.value+='1a'+v+'b'; 272: } 273: else { 274: var l=val.length; 275: var v=val.substring(4,l); 276: document.forms.fileattr.acts.value+='0a'+v+'b'; 277: } 278: } 279: END 280: } 281: 282: # ---------------------------------------------------------------- Print Header 283: $r->print(<<ENDHEADER); 284: <html> 285: <head> 286: <title>The LearningOnline Network With CAPA Directory Browser</title> 287: 288: <script type="text/javascript"> 289: $catalogmodefunctions 290: function openWindow(url, wdwName, w, h, toolbar,scrollbar) { 291: var options = "width=" + w + ",height=" + h + ","; 292: options += "resizable=yes,scrollbars="+scrollbar+",status=no,"; 293: options += "menubar=no,toolbar="+toolbar+",location=no,directories=no"; 294: var newWin = window.open(url, wdwName, options); 295: newWin.focus(); 296: } 297: function gothere(val) { 298: window.location=val+'?acts='+document.forms.fileattr.acts.value; 299: } 300: </script> 301: 302: </head> 303: <body bgcolor="#FFFFFF"> 304: ENDHEADER 305: 306: # - Evaluate actions from previous page (both cumulatively and chronologically) 307: if ($ENV{'form.catalogmode'} eq 'groupimport') { 308: my $acts=$ENV{'form.acts'}; 309: my @Acts=split(/b/,$acts); 310: my %ahash; 311: my %achash; 312: my $ac=0; 313: # some initial hashes for working with data 314: foreach (@Acts) { 315: my ($state,$ref)=split(/a/); 316: $ahash{$ref}=$state; 317: $achash{$ref}=$ac; 318: $ac++; 319: } 320: # sorting through the actions and changing the tied database hash 321: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) { 322: my $key=$_; 323: if ($ahash{$key} eq '1') { 324: $hash{'store_'.$hash{'pre_'.$key.'_link'}}= 325: $hash{'pre_'.$key.'_title'}; 326: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}= 327: $hash{'storectr'}+0; 328: $hash{'storectr'}++; 329: } 330: if ($ahash{$key} eq '0') { 331: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) { 332: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}}; 333: } 334: } 335: } 336: # deleting the previously cached listing 337: foreach (keys %hash) { 338: if ($_ =~ /^pre_/ && $_ =~/link$/) { 339: my $key = $_; 340: $key =~ s/^pre_//; 341: $key =~ s/_[^_]*$//; 342: delete $hash{'pre_'.$key.'_title'}; 343: delete $hash{'pre_'.$key.'_link'}; 344: } 345: } 346: } 347: 348: # ---------------------------------------------------------------- output title 349: $r->print('<h2><font color="#888888">The LearningOnline With CAPA '. 350: 'Network Directory Browser</font></h2>'."\n"); 351: # ---------------------------------- get state of file attributes to be showing 352: if ($ENV{'form.attrs'} ne "") { 353: for (my $i=0; $i<=6; $i++) { 354: delete $hash{'display_attrs_'.$i}; 355: if ($ENV{'form.attr'.$i} == 1) { 356: $attrchk[$i] = "checked"; 357: $hash{'display_attrs_'.$i} = 1; 358: } 359: } 360: } else { 361: for (my $i=0; $i<=6; $i++) { 362: $attrchk[$i] = "checked" if $hash{'display_attrs_'.$i} == 1; 363: } 364: } 365: # ------------------------------- output state of file attributes to be showing 366: $r->print(<<END); 367: <b><font color="#666666">Display file attributes</font></b><br /> 368: <form method="post" name="fileattr" action="$uri" 369: enctype="application/x-www-form-urlencoded"> 370: <table border=0><tr> 371: <td><input type="checkbox" name="attr0" value="1" $attrchk[0] /> Size</td> 372: <td><input type="checkbox" name="attr1" value="1" $attrchk[1] /> Last access</td> 373: <td><input type="checkbox" name="attr2" value="1" $attrchk[2] /> Last modified</td> 374: <td><input type="checkbox" name="attr6" value="1" $attrchk[6] /> All versions</td> 375: </tr><tr> 376: <td><input type="checkbox" name="attr3" value="1" $attrchk[3] /> Author</td> 377: <td><input type="checkbox" name="attr4" value="1" $attrchk[4] /> Keywords</td> 378: <td><input type="checkbox" name="attr5" value="1" $attrchk[5] /> Language</td> 379: <td> </td> 380: </tr></table> 381: <input type="hidden" name="dirPointer" value="on" /> 382: <input type="hidden" name="acts" value="" /> 383: <input type="submit" name="attrs" value="Review" />  384: <input type="submit" name="attrs" value="Refresh" /> 385: $closebutton 386: $groupimportbutton 387: </form> 388: END 389: 390: # ----------------- output starting row to the indexed file/directory hierarchy 391: my $titleclr="#ddffff"; 392: $r->print("<table border=0><tr><td bgcolor=#eeeeee>\n"); 393: $r->print("<table border=0><tr>\n"); 394: $r->print("<td $colspan bgcolor=$titleclr><b>Name</b></td>\n"); 395: $r->print("<td bgcolor=$titleclr align=right><b>Size (bytes) ". 396: "</b></td>\n") if ($hash{'display_attrs_0'} == 1); 397: $r->print("<td bgcolor=$titleclr><b>Last accessed</b></td>\n") 398: if ($hash{'display_attrs_1'} == 1); 399: $r->print("<td bgcolor=$titleclr><b>Last modified</b></td>\n") 400: if ($hash{'display_attrs_2'} == 1); 401: $r->print("<td bgcolor=$titleclr><b>Author(s)</b></td>\n") 402: if ($hash{'display_attrs_3'} == 1); 403: $r->print("<td bgcolor=$titleclr><b>Keywords</b></td>\n") 404: if ($hash{'display_attrs_4'} == 1); 405: $r->print("<td bgcolor=$titleclr><b>Language</b></td>\n") 406: if ($hash{'display_attrs_5'} == 1); 407: $r->print("</tr>"); 408: 409: # ----------------- read in what directories have previously been set to "open" 410: foreach (keys %hash) { 411: if ($_ =~ /^diropen_status_/) { 412: my $key = $_; 413: $key =~ s/^diropen_status_//; 414: $dirs{$key} = $hash{$_}; 415: } 416: } 417: 418: if ($ENV{'form.openuri'}) { # take care of review and refresh options 419: my $uri=$ENV{'form.openuri'}; 420: if (exists($hash{'diropen_status_'.$uri})) { 421: my $cursta = $hash{'diropen_status_'.$uri}; 422: $dirs{$uri} = 'open'; 423: $hash{'diropen_status_'.$uri} = 'open'; 424: if ($cursta eq 'open') { 425: $dirs{$uri} = 'closed'; 426: $hash{'diropen_status_'.$uri} = 'closed'; 427: } 428: } else { 429: $hash{'diropen_status_'.$uri} = 'open'; 430: $dirs{$uri} = 'open'; 431: } 432: } 433: 434: my $bredir = $ENV{'form.dirPointer'}; 435: my $toplevel; 436: my $indent = 0; 437: $uri = $uri.'/' if $uri !~ /.*\/$/; 438: 439: if ($bredir ne "on") { 440: $hash{'top.level'} = $uri; 441: $toplevel = $uri; 442: 443: } else { 444: $toplevel = $hash{'top.level'}; 445: } 446: 447: # -------------------------------- if not at top level, provide an uplink arrow 448: if ($toplevel ne "/res/"){ 449: my (@uri_com) = split(/\//,$uri); 450: pop @uri_com; 451: my $upone = join('/',@uri_com); 452: my @list = qw (0); 453: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list); 454: $indent = 1; 455: } 456: 457: # -------- recursively go through all the directories and output as appropriate 458: &scanDir ($r,$toplevel,$indent,\%hash); 459: 460: # ---------------------------- embed hidden information useful for group import 461: $r->print("<form name='fnum'>"); 462: $r->print("<input type='hidden' name='fnum' value='$fnum'></form>"); 463: 464: # -------------------------------------------------------------- end the tables 465: $r->print("</table>"); 466: $r->print("</td></tr></table>"); 467: 468: # --------------------------------------------------- end the output and return 469: $r->print("</body></html>\n"); 470: untie(%hash); 471: } else { 472: $r->print('<html><head></head><body>Unable to tie hash to db '. 473: 'file</body></html>'); 474: return OK; 475: } 476: return OK; 477: } 478: 479: # ----------------------------------------------- recursive scan of a directory 480: sub scanDir { 481: my ($r,$startdir,$indent,$hashref)=@_; 482: my ($compuri,$curdir); 483: my $dirptr=16384; 484: $indent++; 485: 486: my %dupdirs = %dirs; 487: my @list=&get_list($r,$startdir); 488: foreach my $line (@list) { 489: my ($strip,$dom,$foo,$testdir,$foo)=split(/\&/,$line,5); 490: next if $strip =~ /.*\.meta$/; 491: my (@fileparts) = split(/\./,$strip); 492: if ($hash{'display_attrs_6'} != 1) { 493: if (scalar(@fileparts) >= 3) { 494: my $fext = pop @fileparts; 495: my $ov = pop @fileparts; 496: my $fname = join ('.',@fileparts,$fext); 497: next if (grep /$fname/,@list and $ov =~ /\d+/); 498: } 499: } 500: 501: if ($dom eq "domain") { 502: $compuri = join('',$strip,"/"); # dom list has /res/<domain name> 503: $curdir = $compuri; 504: } else { 505: # user, dir & file have name only, i.e., w/o path 506: $compuri = join('',$startdir,$strip,"/"); 507: $curdir = $startdir; 508: } 509: my $diropen = "closed"; 510: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/)) { 511: while (my ($key,$val)= each %dupdirs) { 512: if ($key eq $compuri and $val eq "open") { 513: $diropen = "opened"; 514: delete $dupdirs{key},$dirs{$key}; 515: } 516: } 517: } 518: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list); 519: &scanDir ($r,$compuri,$indent) if $diropen eq "opened"; 520: } 521: $indent--; 522: } 523: 524: # --------------- get complete matched list based on the uri (returns an array) 525: sub get_list { 526: my ($r,$uri)=@_; 527: my @list; 528: my $luri = $uri; 529: $luri =~ s/\//_/g; 530: 531: if ($ENV{'form.attrs'} eq "Refresh") { 532: foreach (keys %hash) { 533: delete $hash{$_} if ($_ =~ /^dirlist_files_/); 534: } 535: } 536: 537: if ($hash{'dirlist_files'.$luri}) { 538: @list = split(/\n/,$hash{'dirlist_files_'.$luri}); 539: } else { 540: @list = &Apache::lonnet::dirlist($uri); 541: $hash{'dirlist_files_'.$luri} = join('\n',@list); 542: } 543: return @list=&match_ext($r,@list); 544: } 545: 546: # -------------------- filters out files based on extensions (returns an array) 547: sub match_ext { 548: my ($r,@packlist)=@_; 549: my @trimlist; 550: my $nextline; 551: my @fileext; 552: my $dirptr=16384; 553: 554: foreach my $line (@packlist) { 555: chomp $line; 556: $line =~ s/^\/home\/httpd\/html//; 557: my @unpackline = split (/\&/,$line); 558: next if ($unpackline[0] eq "."); 559: next if ($unpackline[0] eq ".."); 560: my @filecom = split (/\./,$unpackline[0]); 561: my $fext = pop(@filecom); 562: my $fnptr = $unpackline[3]&$dirptr; 563: if ($fnptr == 0 and $unpackline[3] ne "") { 564: my $embstyle = &Apache::loncommon::fileembstyle($fext); 565: push @trimlist,$line if (defined($embstyle) && 566: ($embstyle ne 'hdn' or $fext eq 'meta')); 567: } else { 568: push @trimlist,$line; 569: } 570: } 571: @trimlist = sort (@trimlist); 572: return @trimlist; 573: } 574: 575: # ------------------------------- displays one line in appropriate table format 576: sub display_line { 577: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_; 578: my (@pathfn, $fndir, $fnptr); 579: my $dirptr=16384; 580: my $fileclr="#ffffe6"; 581: my $iconpath= $r->dir_config('lonIconsURL') . "/"; 582: 583: my @filecom = split (/\&/,$line); 584: my @pathcom = split (/\//,$filecom[0]); 585: my $listname = $pathcom[scalar(@pathcom)-1]; 586: my $fnptr = $filecom[3]&$dirptr; 587: my $msg = 'View '.$filecom[0].' resources'; 588: $msg = 'Close '.$filecom[0].' directory' if $diropen eq "opened"; 589: 590: my $tabtag="</td>"; 591: my $i=0; 592: 593: while ($i<=5) { 594: $tabtag=join('',$tabtag,"<td bgcolor=",$fileclr,"> </td>") 595: if $hash{'display_attrs_'.$i} == 1; 596: $i++; 597: } 598: 599: # display uplink arrow 600: if ($filecom[1] eq "viewOneUp") { 601: $r->print("<tr>$extrafield"); 602: $r->print("<td bgcolor=$fileclr valign=bottom>\n"); 603: $r->print ('<form method="post" name="dirpathUP" action="'.$startdir. 604: '/" '. 605: 'onSubmit="return rep_dirpath(\'UP\','. 606: 'document.forms.fileattr.acts.value)" '. 607: 'enctype="application/x-www-form-urlencoded"'. 608: '>'."\n"); 609: $r->print ('<input type=hidden name=openuri value="'. 610: $startdir.'">'."\n"); 611: $r->print ('<input type="hidden" name="acts" value="">'."\n"); 612: $r->print ('<input src="'.$iconpath.'arrow_up.gif"'); 613: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'. 614: "\n"); 615: $r->print("Up $tabtag</tr></form>\n"); 616: return OK; 617: } 618: 619: # display domain 620: if ($filecom[1] eq "domain") { 621: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n") 622: if ($ENV{'form.dirPointer'} eq "on"); 623: $r->print("<tr>$extrafield"); 624: $r->print("<td bgcolor=$fileclr valign=bottom>"); 625: &begin_form ($r,$filecom[0].'/'); 626: my $anchor = $filecom[0].'/'; 627: $anchor =~ s/\///g; 628: $r->print ('<a name="'.$anchor.'">'); 629: $r->print ('<input type="hidden" name="acts" value="">'); 630: $r->print ('<input src="'.$iconpath.'folder_pointer_'. 631: $diropen.'.gif"'); 632: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'. 633: "\n"); 634: $r->print ('<a href="javascript:gothere(\''.$filecom[0]. 635: '/\')"><img src="'.$iconpath.'server.gif"'); 636: $r->print (' border="0" /></a>'."\n"); 637: $r->print("Domain - $listname $tabtag</tr></form>\n"); 638: return OK; 639: 640: # display user directory 641: } 642: if ($filecom[1] eq "user") { 643: $r->print("<tr>$extrafield"); 644: $r->print("<td bgcolor=$fileclr valign=bottom nowrap>\n"); 645: my $curdir = $startdir.$filecom[0].'/'; 646: my $anchor = $curdir; 647: $anchor =~ s/\///g; 648: &begin_form ($r,$curdir); 649: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath. 650: 'whitespace1.gif" border="0" />'."\n"); 651: $r->print ('<input type="hidden" name="acts" value="">'); 652: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen. 653: '.gif"'); 654: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'. 655: "\n"); 656: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src='. 657: $iconpath.'quill.gif border="0" name="'.$msg. 658: '" height="22" /></a>'); 659: $r->print ($listname.$tabtag.'</tr></form>'."\n"); 660: return OK; 661: } 662: 663: # display file 664: if ($fnptr == 0 and $filecom[3] ne "") { 665: my @file_ext = split (/\./,$listname); 666: my $curfext = $file_ext[-1]; 667: # Set the icon for the file 668: my $iconname = "unknown.gif"; 669: my $embstyle = &Apache::loncommon::fileembstyle($curfext); 670: # The unless conditional that follows is a bit of overkill 671: $iconname = $curfext.".gif" unless 672: (!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn'); 673: # 674: my $filelink = $startdir.$filecom[0]; 675: $r->print("<tr><td nowrap valign='bottom' bgcolor=$fileclr>"); 676: my $metafile = grep /^$filecom[0]\.meta\&/, @list; 677: my $title; 678: if ($ENV{'form.catalogmode'} eq 'interactive') { 679: $title=$listname; 680: $title = &Apache::lonnet::metadata($filelink,'title') 681: if ($metafile == 1); 682: $title=$listname unless $title; 683: my $titleesc=$title; 684: $titleesc=~s/\'/\\'/; #' (clean up this spare quote 685: $r->print("<a href=\"javascript:select_data(\'", 686: $titleesc,"','",$filelink,"')\">"); 687: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>". 688: "\n"); 689: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>"); 690: } 691: elsif ($ENV{'form.catalogmode'} eq 'groupimport') { 692: $title=$listname; 693: $title = &Apache::lonnet::metadata($filelink,'title') 694: if ($metafile == 1); 695: $title=$listname unless $title; 696: $r->print("<form name='form$fnum'>\n"); 697: $r->print("<input type='checkbox' name='filelink"."' ". 698: "value='$filelink' onClick='". 699: "javascript:queue(\"form$fnum\")' "); 700: if ($hash{'store_'.$filelink}) { 701: $r->print("checked"); 702: } 703: $r->print(">\n"); 704: $r->print("<input type='hidden' name='title"."' ". 705: "value='$title'>\n"); 706: $r->print("</form>\n"); 707: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>"); 708: $hash{"pre_${fnum}_link"}=$filelink; 709: $hash{"pre_${fnum}_title"}=$title; 710: $fnum++; 711: } 712: 713: if ($indent > 0 and $indent < 11) { 714: $r->print("<img src=",$iconpath,"whitespace",$indent, 715: ".gif border='0' />\n"); 716: } elsif ($indent >0) { 717: my $ten = int($indent/10.); 718: my $rem = $indent%10.0; 719: my $count = 0; 720: while ($count < $ten) { 721: $r->print("<img src=",$iconpath, 722: "whitespace10.gif border='0' />\n"); 723: $count++; 724: } 725: $r->print("<img src=",$iconpath,"whitespace",$rem, 726: ".gif border='0' />\n") if $rem > 0; 727: } 728: 729: $r->print("<img src=$iconpath$iconname border='0' />\n"); 730: $r->print (" <a href=\"javascript:openWindow('".$filelink. 731: "', 'metadatafile', '450', '500', 'no', 'yes')\";". 732: " TARGET=_self>$listname</a> "); 733: 734: $r->print (" (<a href=\"javascript:openWindow('".$filelink. 735: ".meta', 'metadatafile', '400', '450', 'no', 'yes')\"; ". 736: "TARGET=_self>metadata</a>) ") if ($metafile == 1); 737: 738: $r->print("</td>\n"); 739: $r->print("<td bgcolor=$fileclr align=right valign=bottom> ", 740: $filecom[8]," </td>\n") 741: if $hash{'display_attrs_0'} == 1; 742: $r->print("<td bgcolor=$fileclr valign=bottom> ". 743: (localtime($filecom[9]))." </td>\n") 744: if $hash{'display_attrs_1'} == 1; 745: $r->print("<td bgcolor=$fileclr valign=bottom> ". 746: (localtime($filecom[10]))." </td>\n") 747: if $hash{'display_attrs_2'} == 1; 748: 749: if ($hash{'display_attrs_3'} == 1) { 750: my $author = &Apache::lonnet::metadata($filelink,'author') 751: if ($metafile == 1); 752: $author = ' ' if (!$author); 753: $r->print("<td bgcolor=$fileclr valign=bottom> ".$author. 754: " </td>\n"); 755: } 756: if ($hash{'display_attrs_4'} == 1) { 757: my $keywords = &Apache::lonnet::metadata($filelink,'keywords') 758: if ($metafile == 1); 759: $keywords = ' ' if (!$keywords); 760: $r->print("<td bgcolor=$fileclr valign=bottom> ".$keywords. 761: " </td>\n"); 762: } 763: if ($hash{'display_attrs_5'} == 1) { 764: my $lang = &Apache::lonnet::metadata($filelink,'language') 765: if ($metafile == 1); 766: $lang = &Apache::loncommon::languagedescription($lang); 767: $lang = ' ' if (!$lang); 768: $r->print("<td bgcolor=$fileclr valign=bottom> ".$lang. 769: " </td>\n"); 770: } 771: $r->print("</tr>\n"); 772: } 773: 774: # -- display directory 775: if ($fnptr == $dirptr) { 776: my @file_ext = split (/\./,$listname); 777: my $curfext = $file_ext[scalar(@file_ext)-1]; 778: my $curdir = $startdir.$filecom[0].'/'; 779: my $anchor = $curdir; 780: $anchor =~ s/\///g; 781: $r->print("<tr>$extrafield<td bgcolor=$fileclr valign=bottom>"); 782: &begin_form ($r,$curdir); 783: my $indentm1 = $indent-1; 784: if ($indentm1 < 11 and $indentm1 > 0) { 785: $r->print("<img src=",$iconpath,"whitespace",$indentm1, 786: ".gif border='0' />\n"); 787: } else { 788: my $ten = int($indentm1/10.); 789: my $rem = $indentm1%10.0; 790: my $count = 0; 791: while ($count < $ten) { 792: $r->print ("<img src=",$iconpath 793: ,"whitespace10.gif border='0' />\n"); 794: $count++; 795: } 796: $r->print ("<img src=",$iconpath,"whitespace",$rem, 797: ".gif border='0' />\n") if $rem > 0; 798: } 799: $r->print ('<input type="hidden" name="acts" value="">'); 800: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath. 801: 'folder_pointer_'.$diropen.'.gif"'); 802: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'. 803: "\n"); 804: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src="'. 805: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'. 806: "\n"); 807: $r->print ("$listname$tabtag</tr></form>\n"); 808: } 809: 810: } 811: 812: # ------------------- prints the beginning of a form for directory or file link 813: sub begin_form { 814: my ($r,$uri) = @_; 815: my $anchor = $uri; 816: $anchor =~ s/\///g; 817: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri. 818: '#'.$anchor. 819: '" onSubmit="return rep_dirpath(\''.$dnum.'\''. 820: ',document.forms.fileattr.acts.value)" '. 821: 'enctype="application/x-www-form-urlencoded">'."\n"); 822: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'">'. 823: "\n"); 824: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n"); 825: $dnum++; 826: } 827: 828: # --------- settings whenever the user causes the indexer window to be launched 829: sub start_fresh_session { 830: delete $hash{'mode_catalog'}; 831: delete $hash{'form_mode'}; 832: delete $hash{'form_form'}; 833: delete $hash{'form_element'}; 834: foreach (keys %hash) { 835: if ($_ =~ /^pre_/) { 836: delete $hash{$_}; 837: } 838: if ($_ =~ /^store/) { 839: delete $hash{$_}; 840: } 841: } 842: } 843: 844: # ------------------------------------------------------------------- setvalues 845: sub setvalues { 846: # setvalues is used in registerurl to synchronize the database 847: # hash and environment hashes 848: my ($H1,$h1key,$H2,$h2key) =@_; 849: # 850: if (exists $H2->{$h2key}) { 851: $H1->{$h1key} = $H2->{$h2key}; 852: } elsif (exists $H1->{$h1key}) { 853: $H2->{$h2key} = $H1->{$h1key}; 854: } 855: } 856: 857: 1; 858: 859: =head1 NAME 860: 861: Apache::lonindexer - mod_perl module for cross server filesystem browsing 862: 863: =head1 SYNOPSIS 864: 865: Invoked by /etc/httpd/conf/srm.conf: 866: 867: <LocationMatch "^/res.*/$"> 868: SetHandler perl-script 869: PerlHandler Apache::lonindexer 870: </LocationMatch> 871: 872: =head1 INTRODUCTION 873: 874: This module enables a scheme of browsing across a cross server. 875: 876: This is part of the LearningOnline Network with CAPA project 877: described at http://www.lon-capa.org. 878: 879: =head1 BEGIN SUBROUTINE 880: 881: This routine is only run once after compilation. 882: 883: =over 4 884: 885: =item * 886: 887: Initializes %language hash table. 888: 889: =back 890: 891: =head1 HANDLER SUBROUTINE 892: 893: This routine is called by Apache and mod_perl. 894: 895: =over 4 896: 897: =item * 898: 899: read in machine configuration variables 900: 901: =item * 902: 903: see if called from an interactive mode 904: 905: =item * 906: 907: refresh environment with user database values (in %hash) 908: 909: =item * 910: 911: define extra fields and buttons in case of special mode 912: 913: =item * 914: 915: set catalogmodefunctions to have extra needed javascript functionality 916: 917: =item * 918: 919: print header 920: 921: =item * 922: 923: evaluate actions from previous page (both cumulatively and chronologically) 924: 925: =item * 926: 927: output title 928: 929: =item * 930: 931: get state of file attributes to be showing 932: 933: =item * 934: 935: output state of file attributes to be showing 936: 937: =item * 938: 939: output starting row to the indexed file/directory hierarchy 940: 941: =item * 942: 943: read in what directories have previously been set to "open" 944: 945: =item * 946: 947: if not at top level, provide an uplink arrow 948: 949: =item * 950: 951: recursively go through all the directories and output as appropriate 952: 953: =item * 954: 955: information useful for group import 956: 957: =item * 958: 959: end the tables 960: 961: =item * 962: 963: end the output and return 964: 965: =back 966: 967: =head1 OTHER SUBROUTINES 968: 969: =over 4 970: 971: =item * 972: 973: scanDir - recursive scan of a directory 974: 975: =item * 976: 977: get_list - get complete matched list based on the uri (returns an array) 978: 979: =item * 980: 981: match_ext - filters out files based on extensions (returns an array) 982: 983: =item * 984: 985: display_line - displays one line in appropriate table format 986: 987: =item * 988: 989: begin_form - prints the beginning of a form for directory or file link 990: 991: =item * 992: 993: start_fresh_session - settings whenever the user causes the indexer window 994: to be launched 995: 996: =back 997: 998: =cut