loncom/interface/lonindexer.pm - view

File: [LON-CAPA] / loncom / interface / lonindexer.pm
Revision 1.12: download - view: text, annotated - select for diffs
Tue Jun 26 21:11:18 2001 UTC (22 years, 11 months ago) by ng
Branches: MAIN
CVS tags: HEAD

allow browsing by providing the uri at location. If /res/ is provided, it allows
browsing thru the whole network. Anything else will show only that directory.

1: # The LearningOnline Network with CAPA 2: # Directory Indexer 3: # (Login Screen 4: # 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14 Gerd Kortemeyer) 5: # 11/23 Gerd Kortemeyer 6: # 07/20-08/04 H.K. Ng 7: # 8: # 05/9-05/19/2001 H. K. Ng 9: # 05/21/2001 H. K. Ng 10: # 05/23/2001 H. K. Ng 11: # 05/31/2001 Scott Harrison 12: # 06/01/2001 Scott Harrison 13: # 06/02/2001 Scott Harrison 14: # 06/15/2001 Scott Harrison 15: # 06/26/2001 H. K. Ng 16: 17: package Apache::lonindexer; 18: 19: use strict; 20: use Apache::lonnet(); 21: use Apache::Constants qw(:common); 22: use Apache::File; 23: use GDBM_File; 24: 25: my %hash; 26: my %dirs; 27: my %language; 28: my $hidden; 29: my $extrafield; 30: my $fnum; 31: sub BEGIN { 32: my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/language.tab'); 33: map { 34: $_=~/(\w+)\s+([\w\s\-]+)/; 35: $language{$1}=$2; 36: } <$fh>; 37: } 38: 39: sub handler { 40: my $r = shift; 41: $r->content_type('text/html'); 42: $r->send_http_header; 43: return OK if $r->header_only; 44: $fnum=0; 45: my $iconpath= $r->dir_config('lonIconsURL') . "/"; 46: my $domain = $r->dir_config('lonDefDomain'); 47: my $role = $r->dir_config('lonRole'); 48: my $loadlim = $r->dir_config('lonLoadLim'); 49: my $servadm = $r->dir_config('lonAdmEMail'); 50: my $sysadm = $r->dir_config('lonSysEMail'); 51: my $lonhost = $r->dir_config('lonHostID'); 52: my $tabdir = $r->dir_config('lonTabDir'); 53: 54: my $fileclr='#ffffe6'; 55: # -------------------------------------- see if called from an interactive mode 56: map { 57: my ($name, $value) = split(/=/,$_); 58: $value =~ tr/+/ /; 59: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; 60: if ($name eq 'catalogmode') { 61: $ENV{'form.'.$name}=$value; 62: } 63: } (split(/&/,$ENV{'QUERY_STRING'})); 64: 65: $hidden=''; my $closebutton=''; 66: my $groupimportbutton=''; 67: my $colspan=''; 68: if ($ENV{'form.catalogmode'} eq 'interactive') { 69: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'. 70: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'. 71: ' border="0"></td>'; 72: $colspan=" colspan='2' "; 73: $hidden=<<END; 74: <input type='hidden' name='catalogmode' value='interactive'> 75: END 76: $closebutton=<<END; 77: <input type="button" name="close" value='CLOSE' onClick="self.close()"> 78: END 79: } 80: elsif ($ENV{'form.catalogmode'} eq 'groupimport') { 81: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'. 82: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'. 83: ' border="0"></td>'; 84: $colspan=" colspan='2' "; 85: $hidden=<<END; 86: <input type='hidden' name='catalogmode' value='groupimport'> 87: END 88: $closebutton=<<END; 89: <input type="button" name="close" value='CLOSE' onClick="self.close()"> 90: END 91: $groupimportbutton=<<END; 92: <input type="button" name="groupimport" value='GROUP IMPORT' onClick="javascript:select_group()"> 93: END 94: } 95: 96: my $catalogmodefunctions=''; 97: if ($ENV{'form.catalogmode'} eq 'interactive' or 98: $ENV{'form.catalogmode'} eq 'groupimport') { 99: $catalogmodefunctions=<<END; 100: function select_data(title,url) { 101: changeTitle(title); 102: changeURL(url); 103: self.close(); 104: } 105: function save_group() { 106: for (var num=0; num<document.forms.fnum.fnum.value; num++) { 107: if (eval("document.forms.form"+num+".filelink.checked")) { 108: alert(eval("document.forms.form"+num+".title.value")+ 109: eval("document.forms.form"+num+".filelink.value")); 110: } 111: } 112: } 113: function select_group() { 114: var linkflag=false; 115: for (var num=0; num<document.forms.fnum.fnum.value; num++) { 116: if (eval("document.forms.form"+num+".filelink.checked")) { 117: // alert(eval("document.forms.form"+num+".title.value")+ 118: // eval("document.forms.form"+num+".filelink.value")); 119: insertRowInLastRow(); 120: placeResourceInLastRow( 121: eval("document.forms.form"+num+".title.value"), 122: eval("document.forms.form"+num+".filelink.value"), 123: linkflag 124: ); 125: linkflag=true; 126: } 127: } 128: opener.editmode=0; 129: opener.notclear=0; 130: opener.linkmode=0; 131: opener.infoclear(); 132: opener.draw(); 133: } 134: function insertRowInLastRow() { 135: opener.insertrow(opener.maxrow); 136: opener.addobj(opener.maxrow,'e&2'); 137: } 138: function placeResourceInLastRow (title,url,linkflag) { 139: opener.newresource(opener.maxrow,2,opener.escape(title),opener.escape(url),'false','normal'); 140: opener.save(); 141: opener.mostrecent=opener.obj.length-1; 142: if (linkflag) { 143: opener.joinres(opener.linkmode,opener.mostrecent,0); 144: } 145: opener.linkmode=opener.mostrecent; 146: } 147: function changeTitle(val) { 148: if (opener.inf.document.forms.resinfo.elements.t) { 149: opener.inf.document.forms.resinfo.elements.t.value=val; 150: } 151: } 152: function changeURL(val) { 153: if (opener.inf.document.forms.resinfo.elements.u) { 154: opener.inf.document.forms.resinfo.elements.u.value=val; 155: } 156: } 157: END 158: } 159: 160: # ---------------------------------------------------------------- Print Header 161: $r->print(<<ENDHEADER); 162: <html> 163: <head> 164: <title>The LearningOnline Network With CAPA Directory Browser</title> 165: 166: <SCRIPT language="javascript"> 167: $catalogmodefunctions 168: function openWindow(url, wdwName, w, h, toolbar,scrollbar) { 169: var options = "width=" + w + ",height=" + h + ","; 170: options += "resizable=yes,scrollbars="+scrollbar+",status=no,"; 171: options += "menubar=no,toolbar="+toolbar+",location=no,directories=no"; 172: var newWin = window.open(url, wdwName, options); 173: newWin.focus(); 174: } 175: </SCRIPT> 176: 177: </head> 178: <body bgcolor="#FFFFFF"> 179: ENDHEADER 180: 181: my $line; 182: my (@attrchk,@openpath); 183: my $uri=$r->uri; 184: 185: $r->print('<h2><font color="#888888">The LearningOnline With CAPA Network Directory Browser</font></h2>'."\n"); 186: 187: my $diropendb = "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db"; 188: 189: if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) { 190: 191: if ($ENV{'form.attrs'} ne "") { 192: for (my $i=0; $i<=5; $i++) { 193: delete $hash{'display_attrs_'.$i}; 194: if ($ENV{'form.attr'.$i} == 1) { 195: $attrchk[$i] = "checked"; 196: $hash{'display_attrs_'.$i} = 1; 197: } 198: } 199: } else { 200: for (my $i=0; $i<=5; $i++) { 201: $attrchk[$i] = "checked" if $hash{'display_attrs_'.$i} == 1; 202: } 203: } 204: $r->print(<<END); 205: <b><font color="#666666">Display file attributes</font></b><br> 206: <form method="post" name="fileattr" action="$uri" enctype="application/x-www-form-urlencoded"> 207: <table border=0><tr> 208: <td><input type=checkbox name=attr0 value="1" $attrchk[0]> Size</td> 209: <td><input type=checkbox name=attr1 value="1" $attrchk[1]> Last access</td> 210: <td><input type=checkbox name=attr2 value="1" $attrchk[2]> Last modified</td> 211: </tr><tr> 212: <td><input type=checkbox name=attr3 value="1" $attrchk[3]> Author</td> 213: <td><input type=checkbox name=attr4 value="1" $attrchk[4]> Keywords</td> 214: <td><input type=checkbox name=attr5 value="1" $attrchk[5]> Language</td> 215: </tr></table> 216: <input type="submit" name="attrs" value="Review">  217: <input type="submit" name="attrs" value="Refresh"> 218: $hidden 219: $closebutton 220: $groupimportbutton 221: </form> 222: END 223: 224: my $titleclr="#ddffff"; 225: $r->print("<table border=0><tr><td bgcolor=#eeeeee>\n"); 226: $r->print("<table border=0><tr>\n"); 227: $r->print("<td $colspan bgcolor=$titleclr><b>Name</b></td>\n"); 228: $r->print("<td bgcolor=$titleclr align=right><b>Size (bytes) </b></td>\n") if ($hash{'display_attrs_0'} == 1); 229: $r->print("<td bgcolor=$titleclr><b>Last accessed</b></td>\n") if ($hash{'display_attrs_1'} == 1); 230: $r->print("<td bgcolor=$titleclr><b>Last modified</b></td>\n") if ($hash{'display_attrs_2'} == 1); 231: $r->print("<td bgcolor=$titleclr><b>Author(s)</b></td>\n") if ($hash{'display_attrs_3'} == 1); 232: $r->print("<td bgcolor=$titleclr><b>Keywords</b></td>\n") if ($hash{'display_attrs_4'} == 1); 233: $r->print("<td bgcolor=$titleclr><b>Language</b></td>\n") if ($hash{'display_attrs_5'} == 1); 234: $r->print("</tr>"); 235: 236: map { 237: if ($_ =~ /^diropen_status_/) { 238: my $key = $_; 239: $key =~ s/^diropen_status_//; 240: $dirs{$key} = $hash{$_}; 241: } 242: } keys %hash; 243: 244: if ($ENV{'form.openuri'}) { # take care of review and refresh options 245: my $uri=$ENV{'form.openuri'}; 246: if (exists($hash{'diropen_status_'.$uri})) { 247: my $cursta = $hash{'diropen_status_'.$uri}; 248: $dirs{$uri} = 'open'; 249: $hash{'diropen_status_'.$uri} = 'open'; 250: if ($cursta eq 'open') { 251: $dirs{$uri} = 'closed'; 252: $hash{'diropen_status_'.$uri} = 'closed'; 253: } 254: } else { 255: $hash{'diropen_status_'.$uri} = 'open'; 256: $dirs{$uri} = 'open'; 257: } 258: } 259: 260: my $bredir = $ENV{'form.dirPointer'}; 261: my $toplevel; 262: $uri = $uri.'/' if $uri !~ /.*\/$/; 263: if ($uri eq "/res/" or $bredir ne "on") { 264: $hash{'top.level'} = $uri; 265: $toplevel = $uri; 266: } elsif ($bredir eq "on") { 267: if ($hash{'top.level'} eq "/res/") { 268: $toplevel = "/res/"; 269: } else { 270: $toplevel = $uri; 271: } 272: } 273: my $indent = 0; 274: &scanDir ($r,$toplevel,$indent); 275: 276: $r->print("<form name='fnum'>"); 277: $r->print("<input type='hidden' name='fnum' value='$fnum'></form>"); 278: $r->print("</table>"); 279: $r->print("</td></tr></table>"); 280: $r->print("</body></html>\n"); 281: untie(%hash); 282: } else { 283: $r->print("Unable to tie hash to db file"); 284: } 285: return OK; 286: } 287: 288: 289: # --------------------recursive scan of a directory 290: sub scanDir { 291: my ($r,$startdir,$indent)=@_; 292: my ($compuri,$curdir); 293: my $dirptr=16384; 294: $indent++; 295: 296: my %dupdirs = %dirs; 297: my @list=&get_list($r,$startdir); 298: foreach my $line (@list) { 299: my ($strip,$dom,$foo,$testdir,$foo)=split(/\&/,$line,5); 300: next if $strip =~ /.*\.meta$/; 301: if ($dom eq "domain") { 302: $compuri = join('',$strip,"/"); # domain list has /res/<domain name> 303: $curdir = $compuri; 304: } else { 305: $compuri = join('',$startdir,$strip,"/"); # user, dir & file have name only, i.e., w/o path 306: $curdir = $startdir; 307: } 308: my $diropen = "closed"; 309: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/)) { 310: while (my ($key,$val)= each %dupdirs) { 311: if ($key eq $compuri and $val eq "open") { 312: $diropen = "opened"; 313: delete $dupdirs{key},$dirs{$key}; 314: } 315: } 316: } 317: &display_line($r,$diropen,$line,$indent,$curdir,@list); 318: &scanDir ($r,$compuri,$indent) if $diropen eq "opened"; 319: } 320: $indent--; 321: } 322: 323: # ----------------- get complete matched list based on the uri ------ 324: sub get_list { 325: my ($r,$uri)=@_; 326: my @list; 327: my $luri = $uri; 328: $luri =~ s/\//_/g; 329: 330: if ($ENV{'form.attrs'} eq "Refresh") { 331: map { 332: delete $hash{$_} if ($_ =~ /^dirlist_files_/); 333: } keys %hash; 334: } 335: 336: if ($hash{'dirlist_files'.$luri}) { 337: @list = split(/\n/,$hash{'dirlist_files_'.$luri}); 338: } else { 339: @list = &Apache::lonnet::dirlist($uri); 340: $hash{'dirlist_files_'.$luri} = join('\n',@list); 341: } 342: return @list=&match_ext($r,@list); 343: } 344: 345: #-------------------------- filters out files based on extensions 346: sub match_ext { 347: my ($r,@packlist)=@_; 348: my @trimlist; 349: my $nextline; 350: my @fileext; 351: my $dirptr=16384; 352: 353: my $tabdir = $r->dir_config('lonTabDir'); 354: my $fn = $tabdir.'/filetypes.tab'; 355: if (-e $fn) { 356: my $FH=Apache::File->new($fn); 357: my @content=<$FH>; 358: foreach my $line (@content) { 359: (my $ext,my $foo) = split /\s+/,$line; 360: push @fileext,$ext; 361: } 362: } 363: foreach my $line (@packlist) { 364: chomp $line; 365: $line =~ s/^\/home\/httpd\/html//; 366: my @unpackline = split (/\&/,$line); 367: next if ($unpackline[0] eq "."); 368: next if ($unpackline[0] eq ".."); 369: my @filecom = split (/\./,$unpackline[0]); 370: my $fext = pop(@filecom); 371: my $fnptr = $unpackline[3]&$dirptr; 372: if ($fnptr == 0 and $unpackline[3] ne "") { 373: foreach my $nextline (@fileext) { 374: push @trimlist,$line if $nextline eq $fext; 375: } 376: } else { 377: push @trimlist,$line; 378: } 379: } 380: @trimlist = sort (@trimlist); 381: return @trimlist; 382: } 383: 384: #------------------- displays one line in appropriate table format 385: sub display_line{ 386: my ($r,$diropen,$line,$indent,$startdir,@list)=@_; 387: my (@pathfn, $fndir, $fnptr); 388: my $dirptr=16384; 389: my $fileclr="#ffffe6"; 390: my $iconpath= $r->dir_config('lonIconsURL') . "/"; 391: 392: my @filecom = split (/\&/,$line); 393: my @pathcom = split (/\//,$filecom[0]); 394: my $listname = $pathcom[scalar(@pathcom)-1]; 395: my $fnptr = $filecom[3]&$dirptr; 396: my $msg = 'View '.$filecom[0].' resources'; 397: $msg = 'Close '.$filecom[0].' directory' if $diropen eq "opened"; 398: 399: my $tabtag="</td>"; 400: my $i=0; 401: 402: while ($i<=5) { 403: $tabtag=join('',$tabtag,"<td bgcolor=",$fileclr,"> </td>") if $hash{'display_attrs_'.$i} == 1; 404: $i++; 405: } 406: if ($filecom[1] eq "domain") { 407: $r->print("<tr>$extrafield"); 408: $r->print("<td bgcolor=$fileclr valign=bottom>"); 409: &begin_form ($r,$filecom[0].'/'); 410: my $anchor = $filecom[0].'/'; 411: $anchor =~ s/\///g; 412: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.'server.gif"'); 413: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'."\n"); 414: $r->print("Domain - $listname $tabtag</tr></form>\n"); 415: return OK; 416: } 417: if ($filecom[1] eq "user") { 418: $r->print("<tr>$extrafield"); 419: $r->print("<td bgcolor=$fileclr valign=bottom>\n"); 420: my $curdir = $startdir.$filecom[0].'/'; 421: &begin_form ($r,$curdir); 422: my $anchor = $curdir; 423: $anchor =~ s/\///g; 424: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.'whitespace1.gif" border=0>'."\n"); 425: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.'.gif"'); 426: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'."\n"); 427: $r->print ('<img src='.$iconpath.'quill.gif border=0>'.$listname.$tabtag.'</tr></form>'."\n"); 428: return OK; 429: } 430: # display file 431: if ($fnptr == 0 and $filecom[3] ne "") { 432: my @file_ext = split (/\./,$listname); 433: my $curfext = $file_ext[scalar(@file_ext)-1]; 434: my $filelink = $startdir.$filecom[0]; 435: $r->print("<tr><td nowrap valign='bottom' bgcolor=$fileclr>"); 436: my $metafile = grep /^$filecom[0]\.meta\&/, @list; 437: my $title; 438: if ($ENV{'form.catalogmode'} eq 'interactive') { 439: $title=$listname; 440: $title = &Apache::lonnet::metadata($filelink,'title') 441: if ($metafile == 1); 442: $title=$listname unless $title; 443: $r->print("<a href='javascript:select_data(\"", 444: $title,'","',$filelink,"\")'>"); 445: $r->print("<img src='",$iconpath,"select.gif' border=0></a>\n"); 446: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>"); 447: } 448: elsif ($ENV{'form.catalogmode'} eq 'groupimport') { 449: $title=$listname; 450: $title = &Apache::lonnet::metadata($filelink,'title') 451: if ($metafile == 1); 452: $title=$listname unless $title; 453: $r->print("<form name='form$fnum'>\n"); 454: $r->print("<input type='checkbox' name='filelink"."' ". 455: "value='$filelink'>\n"); 456: $r->print("<input type='hidden' name='title"."' ". 457: "value='$title'>\n"); 458: $r->print("</form>\n"); 459: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>"); 460: $fnum++; 461: } 462: 463: if ($indent > 0 and $indent < 11) { 464: $r->print("<img src=",$iconpath,"whitespace",$indent,".gif border=0>\n"); 465: } elsif ($indent >0) { 466: my $ten = int($indent/10.); 467: my $rem = $indent%10.0; 468: my $count = 0; 469: while ($count < $ten) { 470: $r->print("<img src=",$iconpath,"whitespace10.gif border=0>\n"); 471: $count++; 472: } 473: $r->print("<img src=",$iconpath,"whitespace",$rem,".gif border=0>\n") if $rem > 0; 474: } 475: 476: $r->print("<img src=$iconpath$curfext.gif border=0>\n"); 477: $r->print (" <a href=\"javascript:openWindow('".$filelink."', 'metadatafile', '450', '500', 'no', 'yes')\"; TARGET=_self>$listname</a> "); 478: 479: $r->print (" (<a href=\"javascript:openWindow('".$filelink.".meta', 'metadatafile', '400', '450', 'no', 'yes')\"; TARGET=_self>metadata</a>) ") if ($metafile == 1); 480: 481: $r->print("</td>\n"); 482: $r->print("<td bgcolor=$fileclr align=right valign=bottom> ",$filecom[8]," </td>\n") 483: if $hash{'display_attrs_0'} == 1; 484: $r->print("<td bgcolor=$fileclr valign=bottom> ".(localtime($filecom[9]))." </td>\n") 485: if $hash{'display_attrs_1'} == 1; 486: $r->print("<td bgcolor=$fileclr valign=bottom> ".(localtime($filecom[10]))." </td>\n") 487: if $hash{'display_attrs_2'} == 1; 488: 489: if ($hash{'display_attrs_3'} == 1) { 490: my $author = &Apache::lonnet::metadata($filelink,'author') if ($metafile == 1); 491: $author = ' ' if (!$author); 492: $r->print("<td bgcolor=$fileclr valign=bottom> ".$author." </td>\n"); 493: } 494: if ($hash{'display_attrs_4'} == 1) { 495: my $keywords = &Apache::lonnet::metadata($filelink,'keywords') if ($metafile == 1); 496: $keywords = ' ' if (!$keywords); 497: $r->print("<td bgcolor=$fileclr valign=bottom> ".$keywords." </td>\n"); 498: } 499: if ($hash{'display_attrs_5'} == 1) { 500: my $lang = &Apache::lonnet::metadata($filelink,'language') if ($metafile == 1); 501: $lang = $language{$lang}; 502: $lang = ' ' if (!$lang); 503: $r->print("<td bgcolor=$fileclr valign=bottom> ".$lang." </td>\n"); 504: } 505: $r->print("</tr>\n"); 506: } 507: # -- display directory 508: if ($fnptr == $dirptr) { 509: my @file_ext = split (/\./,$listname); 510: my $curfext = $file_ext[scalar(@file_ext)-1]; 511: my $curdir = $startdir.$filecom[0].'/'; 512: my $anchor = $curdir; 513: $anchor =~ s/\///g; 514: $r->print("<tr>$extrafield<td bgcolor=$fileclr valign=bottom>"); 515: &begin_form ($r,$curdir); 516: my $indentm1 = $indent-1; 517: if ($indentm1 < 11 and $indentm1 > 0) { 518: $r->print("<img src=",$iconpath,"whitespace",$indentm1,".gif border=0>\n"); 519: } else { 520: my $ten = int($indentm1/10.); 521: my $rem = $indentm1%10.0; 522: my $count = 0; 523: while ($count < $ten) { 524: $r->print("<img src=",$iconpath,"whitespace10.gif border=0>\n"); 525: $count++; 526: } 527: $r->print("<img src=",$iconpath,"whitespace",$rem,".gif border=0>\n") if $rem > 0; 528: } 529: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.'folder_pointer_'.$diropen.'.gif"'); 530: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'."\n"); 531: $r->print("<img src=",$iconpath,"folder_$diropen.gif border=0>\n"); 532: $r->print("$listname $tabtag</tr></form>\n"); 533: } 534: 535: } 536: 537: #---------------------prints the beginning of a form for directory or file link 538: sub begin_form { 539: my ($r,$uri) = @_; 540: my $anchor = $uri; 541: $anchor =~ s/\///g; 542: $r->print ('<form method="post" name="dirpath" action="'.$uri.'#'.$anchor.'" enctype="application/x-www-form-urlencoded">'."\n"); 543: $r->print ($hidden.'<input type=hidden name=openuri value="'.$uri.'">'."\n"); 544: $r->print ('<input type=hidden name=dirPointer value="on">'."\n"); 545: 546: } 547: 548: 1; 549: __END__ 550: 551: 552: