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use Apache::loncommon added -Scott Harrison
1: # The LearningOnline Network with CAPA 2: # Directory Indexer 3: # 4: # $Id: lonindexer.pm,v 1.30 2001/12/13 13:59:22 harris41 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: # 45: ### 46: 47: ############################################################################### 48: ## ## 49: ## ORGANIZATION OF THIS PERL MODULE ## 50: ## ## 51: ## 1. Description of functions ## 52: ## 2. Modules used by this module ## 53: ## 3. Choices for different output views (detailed, summary, xml, etc) ## 54: ## 4. BEGIN block (to be run once after compilation) ## 55: ## 5. Handling routine called via Apache and mod_perl ## 56: ## 6. Other subroutines ## 57: ## ## 58: ############################################################################### 59: 60: package Apache::lonindexer; 61: 62: # ------------------------------------------------- modules used by this module 63: use strict; 64: use Apache::lonnet(); 65: use Apache::loncommon(); 66: use Apache::Constants qw(:common); 67: use Apache::File; 68: use GDBM_File; 69: 70: # ---------------------------------------- variables used throughout the module 71: my %hash; # tied to a user-specific gdbm file 72: my %dirs; # keys are directories, values are the open/close status 73: my %language; # has the reference information present in language.tab 74: 75: # ----- Values which are set by the handler subroutine and are accessible to 76: # ----- other methods. 77: my $extrafield; # default extra table cell 78: my $fnum; # file counter 79: my $dnum; # directory counter 80: 81: # ---------------------------------------------------------------------- BEGIN 82: sub BEGIN { 83: } 84: 85: # ----------------------------- Handling routine called via Apache and mod_perl 86: sub handler { 87: my $r = shift; 88: $r->content_type('text/html'); 89: $r->send_http_header; 90: return OK if $r->header_only; 91: $fnum=0; 92: $dnum=0; 93: untie %hash; 94: 95: # ------------------------------------- read in machine configuration variables 96: my $iconpath= $r->dir_config('lonIconsURL') . "/"; 97: my $domain = $r->dir_config('lonDefDomain'); 98: my $role = $r->dir_config('lonRole'); 99: my $loadlim = $r->dir_config('lonLoadLim'); 100: my $servadm = $r->dir_config('lonAdmEMail'); 101: my $sysadm = $r->dir_config('lonSysEMail'); 102: my $lonhost = $r->dir_config('lonHostID'); 103: my $tabdir = $r->dir_config('lonTabDir'); 104: 105: my $fileclr='#ffffe6'; 106: my $line; 107: my (@attrchk,@openpath); 108: my $uri=$r->uri; 109: 110: # -------------------------------------- see if called from an interactive mode 111: &get_unprocessed_cgi(); 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: 160: # ------ set catalogmodefunctions to have extra needed javascript functionality 161: my $catalogmodefunctions=''; 162: if ($ENV{'form.catalogmode'} eq 'interactive' or 163: $ENV{'form.catalogmode'} eq 'groupimport') { 164: $catalogmodefunctions=<<END; 165: function select_data(title,url) { 166: changeTitle(title); 167: changeURL(url); 168: self.close(); 169: } 170: function select_group() { 171: window.location="/adm/groupsort?catalogmode=groupimport&acts="+document.forms.fileattr.acts.value; 172: } 173: function changeTitle(val) { 174: if (opener.inf.document.forms.resinfo.elements.t) { 175: opener.inf.document.forms.resinfo.elements.t.value=val; 176: } 177: } 178: function changeURL(val) { 179: if (opener.inf.document.forms.resinfo.elements.u) { 180: opener.inf.document.forms.resinfo.elements.u.value=val; 181: } 182: } 183: END 184: } 185: if ($ENV{'form.catalogmode'} eq 'groupimport') { 186: $catalogmodefunctions.=<<END; 187: var acts=''; 188: function queue(val) { 189: if (eval("document.forms."+val+".filelink.checked")) { 190: var l=val.length; 191: var v=val.substring(4,l); 192: document.forms.fileattr.acts.value+='1a'+v+'b'; 193: } 194: else { 195: var l=val.length; 196: var v=val.substring(4,l); 197: document.forms.fileattr.acts.value+='0a'+v+'b'; 198: } 199: } 200: function rep_dirpath(suffix,val) { 201: eval("document.forms.dirpath"+suffix+".acts.value=val"); 202: } 203: END 204: } 205: 206: # ---------------------------------------------------------------- Print Header 207: $r->print(<<ENDHEADER); 208: <html> 209: <head> 210: <title>The LearningOnline Network With CAPA Directory Browser</title> 211: 212: <script type="text/javascript"> 213: $catalogmodefunctions 214: function openWindow(url, wdwName, w, h, toolbar,scrollbar) { 215: var options = "width=" + w + ",height=" + h + ","; 216: options += "resizable=yes,scrollbars="+scrollbar+",status=no,"; 217: options += "menubar=no,toolbar="+toolbar+",location=no,directories=no"; 218: var newWin = window.open(url, wdwName, options); 219: newWin.focus(); 220: } 221: function gothere(val) { 222: window.location=val+'?acts='+document.forms.fileattr.acts.value; 223: } 224: </script> 225: 226: </head> 227: <body bgcolor="#FFFFFF"> 228: ENDHEADER 229: 230: # - Evaluate actions from previous page (both cumulatively and chronologically) 231: if ($ENV{'form.catalogmode'} eq 'groupimport') { 232: my $acts=$ENV{'form.acts'}; 233: my @Acts=split(/b/,$acts); 234: my %ahash; 235: my %achash; 236: my $ac=0; 237: # some initial hashes for working with data 238: foreach (@Acts) { 239: my ($state,$ref)=split(/a/); 240: $ahash{$ref}=$state; 241: $achash{$ref}=$ac; 242: $ac++; 243: } 244: # sorting through the actions and changing the tied database hash 245: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) { 246: my $key=$_; 247: if ($ahash{$key} eq '1') { 248: $hash{'store_'.$hash{'pre_'.$key.'_link'}}= 249: $hash{'pre_'.$key.'_title'}; 250: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}= 251: $hash{'storectr'}+0; 252: $hash{'storectr'}++; 253: } 254: if ($ahash{$key} eq '0') { 255: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) { 256: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}}; 257: } 258: } 259: } 260: # deleting the previously cached listing 261: foreach (keys %hash) { 262: if ($_ =~ /^pre_/ && $_ =~/link$/) { 263: my $key = $_; 264: $key =~ s/^pre_//; 265: $key =~ s/_[^_]*$//; 266: delete $hash{'pre_'.$key.'_title'}; 267: delete $hash{'pre_'.$key.'_link'}; 268: } 269: } 270: } 271: 272: # ---------------------------------------------------------------- output title 273: $r->print('<h2><font color="#888888">The LearningOnline With CAPA '. 274: 'Network Directory Browser</font></h2>'."\n"); 275: # ---------------------------------- get state of file attributes to be showing 276: if ($ENV{'form.attrs'} ne "") { 277: for (my $i=0; $i<=6; $i++) { 278: delete $hash{'display_attrs_'.$i}; 279: if ($ENV{'form.attr'.$i} == 1) { 280: $attrchk[$i] = "checked"; 281: $hash{'display_attrs_'.$i} = 1; 282: } 283: } 284: } else { 285: for (my $i=0; $i<=6; $i++) { 286: $attrchk[$i] = "checked" if $hash{'display_attrs_'.$i} == 1; 287: } 288: } 289: # ------------------------------- output state of file attributes to be showing 290: $r->print(<<END); 291: <b><font color="#666666">Display file attributes</font></b><br /> 292: <form method="post" name="fileattr" action="$uri" 293: enctype="application/x-www-form-urlencoded"> 294: <table border=0><tr> 295: <td><input type="checkbox" name="attr0" value="1" $attrchk[0] /> Size</td> 296: <td><input type="checkbox" name="attr1" value="1" $attrchk[1] /> Last access</td> 297: <td><input type="checkbox" name="attr2" value="1" $attrchk[2] /> Last modified</td> 298: <td><input type="checkbox" name="attr6" value="1" $attrchk[6] /> All versions</td> 299: </tr><tr> 300: <td><input type="checkbox" name="attr3" value="1" $attrchk[3] /> Author</td> 301: <td><input type="checkbox" name="attr4" value="1" $attrchk[4] /> Keywords</td> 302: <td><input type="checkbox" name="attr5" value="1" $attrchk[5] /> Language</td> 303: <td> </td> 304: </tr></table> 305: <input type="hidden" name="dirPointer" value="on" /> 306: <input type="hidden" name="acts" value="" /> 307: <input type="submit" name="attrs" value="Review" /> 308: <input type="submit" name="attrs" value="Refresh" /> 309: $closebutton 310: $groupimportbutton 311: </form> 312: END 313: 314: # ----------------- output starting row to the indexed file/directory hierarchy 315: my $titleclr="#ddffff"; 316: $r->print("<table border=0><tr><td bgcolor=#eeeeee>\n"); 317: $r->print("<table border=0><tr>\n"); 318: $r->print("<td $colspan bgcolor=$titleclr><b>Name</b></td>\n"); 319: $r->print("<td bgcolor=$titleclr align=right><b>Size (bytes) ". 320: "</b></td>\n") if ($hash{'display_attrs_0'} == 1); 321: $r->print("<td bgcolor=$titleclr><b>Last accessed</b></td>\n") 322: if ($hash{'display_attrs_1'} == 1); 323: $r->print("<td bgcolor=$titleclr><b>Last modified</b></td>\n") 324: if ($hash{'display_attrs_2'} == 1); 325: $r->print("<td bgcolor=$titleclr><b>Author(s)</b></td>\n") 326: if ($hash{'display_attrs_3'} == 1); 327: $r->print("<td bgcolor=$titleclr><b>Keywords</b></td>\n") 328: if ($hash{'display_attrs_4'} == 1); 329: $r->print("<td bgcolor=$titleclr><b>Language</b></td>\n") 330: if ($hash{'display_attrs_5'} == 1); 331: $r->print("</tr>"); 332: 333: # ----------------- read in what directories have previously been set to "open" 334: foreach (keys %hash) { 335: if ($_ =~ /^diropen_status_/) { 336: my $key = $_; 337: $key =~ s/^diropen_status_//; 338: $dirs{$key} = $hash{$_}; 339: } 340: } 341: 342: if ($ENV{'form.openuri'}) { # take care of review and refresh options 343: my $uri=$ENV{'form.openuri'}; 344: if (exists($hash{'diropen_status_'.$uri})) { 345: my $cursta = $hash{'diropen_status_'.$uri}; 346: $dirs{$uri} = 'open'; 347: $hash{'diropen_status_'.$uri} = 'open'; 348: if ($cursta eq 'open') { 349: $dirs{$uri} = 'closed'; 350: $hash{'diropen_status_'.$uri} = 'closed'; 351: } 352: } else { 353: $hash{'diropen_status_'.$uri} = 'open'; 354: $dirs{$uri} = 'open'; 355: } 356: } 357: 358: my $bredir = $ENV{'form.dirPointer'}; 359: my $toplevel; 360: my $indent = 0; 361: $uri = $uri.'/' if $uri !~ /.*\/$/; 362: 363: if ($bredir ne "on") { 364: $hash{'top.level'} = $uri; 365: $toplevel = $uri; 366: 367: } else { 368: $toplevel = $hash{'top.level'}; 369: } 370: 371: # -------------------------------- if not at top level, provide an uplink arrow 372: if ($toplevel ne "/res/"){ 373: my (@uri_com) = split(/\//,$uri); 374: pop @uri_com; 375: my $upone = join('/',@uri_com); 376: my @list = qw (0); 377: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list); 378: $indent = 1; 379: } 380: 381: # -------- recursively go through all the directories and output as appropriate 382: &scanDir ($r,$toplevel,$indent,\%hash); 383: 384: # ---------------------------- embed hidden information useful for group import 385: $r->print("<form name='fnum'>"); 386: $r->print("<input type='hidden' name='fnum' value='$fnum'></form>"); 387: 388: # -------------------------------------------------------------- end the tables 389: $r->print("</table>"); 390: $r->print("</td></tr></table>"); 391: 392: # --------------------------------------------------- end the output and return 393: $r->print("</body></html>\n"); 394: untie(%hash); 395: } else { 396: $r->print('<html><head></head><body>Unable to tie hash to db '. 397: 'file</body></html>'); 398: return OK; 399: } 400: return OK; 401: } 402: 403: # ----------------------------------------------- recursive scan of a directory 404: sub scanDir { 405: my ($r,$startdir,$indent,$hashref)=@_; 406: my ($compuri,$curdir); 407: my $dirptr=16384; 408: $indent++; 409: 410: my %dupdirs = %dirs; 411: my @list=&get_list($r,$startdir); 412: foreach my $line (@list) { 413: my ($strip,$dom,$foo,$testdir,$foo)=split(/\&/,$line,5); 414: next if $strip =~ /.*\.meta$/; 415: my (@fileparts) = split(/\./,$strip); 416: if ($hash{'display_attrs_6'} != 1) { 417: if (scalar(@fileparts) >= 3) { 418: my $fext = pop @fileparts; 419: my $ov = pop @fileparts; 420: my $fname = join ('.',@fileparts,$fext); 421: next if (grep /$fname/,@list and $ov =~ /\d+/); 422: } 423: } 424: 425: if ($dom eq "domain") { 426: $compuri = join('',$strip,"/"); # dom list has /res/<domain name> 427: $curdir = $compuri; 428: } else { 429: # user, dir & file have name only, i.e., w/o path 430: $compuri = join('',$startdir,$strip,"/"); 431: $curdir = $startdir; 432: } 433: my $diropen = "closed"; 434: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/)) { 435: while (my ($key,$val)= each %dupdirs) { 436: if ($key eq $compuri and $val eq "open") { 437: $diropen = "opened"; 438: delete $dupdirs{key},$dirs{$key}; 439: } 440: } 441: } 442: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list); 443: &scanDir ($r,$compuri,$indent) if $diropen eq "opened"; 444: } 445: $indent--; 446: } 447: 448: # --------------- get complete matched list based on the uri (returns an array) 449: sub get_list { 450: my ($r,$uri)=@_; 451: my @list; 452: my $luri = $uri; 453: $luri =~ s/\//_/g; 454: 455: if ($ENV{'form.attrs'} eq "Refresh") { 456: foreach (keys %hash) { 457: delete $hash{$_} if ($_ =~ /^dirlist_files_/); 458: } 459: } 460: 461: if ($hash{'dirlist_files'.$luri}) { 462: @list = split(/\n/,$hash{'dirlist_files_'.$luri}); 463: } else { 464: @list = &Apache::lonnet::dirlist($uri); 465: $hash{'dirlist_files_'.$luri} = join('\n',@list); 466: } 467: return @list=&match_ext($r,@list); 468: } 469: 470: # -------------------- filters out files based on extensions (returns an array) 471: sub match_ext { 472: my ($r,@packlist)=@_; 473: my @trimlist; 474: my $nextline; 475: my @fileext; 476: my $dirptr=16384; 477: 478: foreach my $line (@packlist) { 479: chomp $line; 480: $line =~ s/^\/home\/httpd\/html//; 481: my @unpackline = split (/\&/,$line); 482: next if ($unpackline[0] eq "."); 483: next if ($unpackline[0] eq ".."); 484: my @filecom = split (/\./,$unpackline[0]); 485: my $fext = pop(@filecom); 486: my $fnptr = $unpackline[3]&$dirptr; 487: if ($fnptr == 0 and $unpackline[3] ne "") { 488: my $embstyle = &Apache::loncommon::fileembstyle($fext); 489: push @trimlist,$line if (defined($embstyle) && 490: $embstyle ne 'hdn' ); 491: } else { 492: push @trimlist,$line; 493: } 494: } 495: @trimlist = sort (@trimlist); 496: return @trimlist; 497: } 498: 499: # ------------------------------- displays one line in appropriate table format 500: sub display_line { 501: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_; 502: my (@pathfn, $fndir, $fnptr); 503: my $dirptr=16384; 504: my $fileclr="#ffffe6"; 505: my $iconpath= $r->dir_config('lonIconsURL') . "/"; 506: 507: my @filecom = split (/\&/,$line); 508: my @pathcom = split (/\//,$filecom[0]); 509: my $listname = $pathcom[scalar(@pathcom)-1]; 510: my $fnptr = $filecom[3]&$dirptr; 511: my $msg = 'View '.$filecom[0].' resources'; 512: $msg = 'Close '.$filecom[0].' directory' if $diropen eq "opened"; 513: 514: my $tabtag="</td>"; 515: my $i=0; 516: 517: while ($i<=5) { 518: $tabtag=join('',$tabtag,"<td bgcolor=",$fileclr,"> </td>") 519: if $hash{'display_attrs_'.$i} == 1; 520: $i++; 521: } 522: 523: # display uplink arrow 524: if ($filecom[1] eq "viewOneUp") { 525: $r->print("<tr>$extrafield"); 526: $r->print("<td bgcolor=$fileclr valign=bottom>\n"); 527: $r->print ('<form method="post" name="dirpathUP" action="'.$startdir. 528: '/" '. 529: 'onSubmit="return rep_dirpath(\'UP\','. 530: 'document.forms.fileattr.acts.value)" '. 531: 'enctype="application/x-www-form-urlencoded"'. 532: '>'."\n"); 533: $r->print ('<input type=hidden name=openuri value="'. 534: $startdir.'">'."\n"); 535: $r->print ('<input type="hidden" name="acts" value="">'."\n"); 536: $r->print ('<input src="'.$iconpath.'arrow_up.gif"'); 537: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'. 538: "\n"); 539: $r->print("Up $tabtag</tr></form>\n"); 540: return OK; 541: } 542: 543: # display domain 544: if ($filecom[1] eq "domain") { 545: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n") 546: if ($ENV{'form.dirPointer'} eq "on"); 547: $r->print("<tr>$extrafield"); 548: $r->print("<td bgcolor=$fileclr valign=bottom>"); 549: &begin_form ($r,$filecom[0].'/'); 550: my $anchor = $filecom[0].'/'; 551: $anchor =~ s/\///g; 552: $r->print ('<a name="'.$anchor.'">'); 553: $r->print ('<input type="hidden" name="acts" value="">'); 554: $r->print ('<input src="'.$iconpath.'folder_pointer_'. 555: $diropen.'.gif"'); 556: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'. 557: "\n"); 558: $r->print ('<a href="javascript:gothere(\''.$filecom[0]. 559: '/\')"><img src="'.$iconpath.'server.gif"'); 560: $r->print (' border="0" /></a>'."\n"); 561: $r->print("Domain - $listname $tabtag</tr></form>\n"); 562: return OK; 563: 564: # display user directory 565: } 566: if ($filecom[1] eq "user") { 567: $r->print("<tr>$extrafield"); 568: $r->print("<td bgcolor=$fileclr valign=bottom nowrap>\n"); 569: my $curdir = $startdir.$filecom[0].'/'; 570: my $anchor = $curdir; 571: $anchor =~ s/\///g; 572: &begin_form ($r,$curdir); 573: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath. 574: 'whitespace1.gif" border="0" />'."\n"); 575: $r->print ('<input type="hidden" name="acts" value="">'); 576: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen. 577: '.gif"'); 578: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'. 579: "\n"); 580: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src='. 581: $iconpath.'quill.gif border="0" name="'.$msg. 582: '" height="22" /></a>'); 583: $r->print ($listname.$tabtag.'</tr></form>'."\n"); 584: return OK; 585: } 586: 587: # display file 588: if ($fnptr == 0 and $filecom[3] ne "") { 589: my @file_ext = split (/\./,$listname); 590: my $curfext = $file_ext[-1]; 591: # Set the icon for the file 592: my $iconname = "unknown.gif"; 593: my $embstyle = &Apache::loncommon::fileembstyle($curfext); 594: # The unless conditional that follows is a bit of overkill 595: $iconname = $curfext.".gif" unless 596: (!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn'); 597: # 598: my $filelink = $startdir.$filecom[0]; 599: $r->print("<tr><td nowrap valign='bottom' bgcolor=$fileclr>"); 600: my $metafile = grep /^$filecom[0]\.meta\&/, @list; 601: my $title; 602: if ($ENV{'form.catalogmode'} eq 'interactive') { 603: $title=$listname; 604: $title = &Apache::lonnet::metadata($filelink,'title') 605: if ($metafile == 1); 606: $title=$listname unless $title; 607: $r->print("<a href='javascript:select_data(\"", 608: $title,'","',$filelink,"\")'>"); 609: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>". 610: "\n"); 611: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>"); 612: } 613: elsif ($ENV{'form.catalogmode'} eq 'groupimport') { 614: $title=$listname; 615: $title = &Apache::lonnet::metadata($filelink,'title') 616: if ($metafile == 1); 617: $title=$listname unless $title; 618: $r->print("<form name='form$fnum'>\n"); 619: $r->print("<input type='checkbox' name='filelink"."' ". 620: "value='$filelink' onClick='". 621: "javascript:queue(\"form$fnum\")' "); 622: if ($hash{'store_'.$filelink}) { 623: $r->print("checked"); 624: } 625: $r->print(">\n"); 626: $r->print("<input type='hidden' name='title"."' ". 627: "value='$title'>\n"); 628: $r->print("</form>\n"); 629: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>"); 630: $hash{"pre_${fnum}_link"}=$filelink; 631: $hash{"pre_${fnum}_title"}=$title; 632: $fnum++; 633: } 634: 635: if ($indent > 0 and $indent < 11) { 636: $r->print("<img src=",$iconpath,"whitespace",$indent, 637: ".gif border='0' />\n"); 638: } elsif ($indent >0) { 639: my $ten = int($indent/10.); 640: my $rem = $indent%10.0; 641: my $count = 0; 642: while ($count < $ten) { 643: $r->print("<img src=",$iconpath, 644: "whitespace10.gif border='0' />\n"); 645: $count++; 646: } 647: $r->print("<img src=",$iconpath,"whitespace",$rem, 648: ".gif border='0' />\n") if $rem > 0; 649: } 650: 651: $r->print("<img src=$iconpath$iconname border='0' />\n"); 652: $r->print (" <a href=\"javascript:openWindow('".$filelink. 653: "', 'metadatafile', '450', '500', 'no', 'yes')\";". 654: " TARGET=_self>$listname</a> "); 655: 656: $r->print (" (<a href=\"javascript:openWindow('".$filelink. 657: ".meta', 'metadatafile', '400', '450', 'no', 'yes')\"; ". 658: "TARGET=_self>metadata</a>) ") if ($metafile == 1); 659: 660: $r->print("</td>\n"); 661: $r->print("<td bgcolor=$fileclr align=right valign=bottom> ", 662: $filecom[8]," </td>\n") 663: if $hash{'display_attrs_0'} == 1; 664: $r->print("<td bgcolor=$fileclr valign=bottom> ". 665: (localtime($filecom[9]))." </td>\n") 666: if $hash{'display_attrs_1'} == 1; 667: $r->print("<td bgcolor=$fileclr valign=bottom> ". 668: (localtime($filecom[10]))." </td>\n") 669: if $hash{'display_attrs_2'} == 1; 670: 671: if ($hash{'display_attrs_3'} == 1) { 672: my $author = &Apache::lonnet::metadata($filelink,'author') 673: if ($metafile == 1); 674: $author = ' ' if (!$author); 675: $r->print("<td bgcolor=$fileclr valign=bottom> ".$author. 676: " </td>\n"); 677: } 678: if ($hash{'display_attrs_4'} == 1) { 679: my $keywords = &Apache::lonnet::metadata($filelink,'keywords') 680: if ($metafile == 1); 681: $keywords = ' ' if (!$keywords); 682: $r->print("<td bgcolor=$fileclr valign=bottom> ".$keywords. 683: " </td>\n"); 684: } 685: if ($hash{'display_attrs_5'} == 1) { 686: my $lang = &Apache::lonnet::metadata($filelink,'language') 687: if ($metafile == 1); 688: $lang = &Apache::loncommon::languagedescription($lang); 689: $lang = ' ' if (!$lang); 690: $r->print("<td bgcolor=$fileclr valign=bottom> ".$lang. 691: " </td>\n"); 692: } 693: $r->print("</tr>\n"); 694: } 695: 696: # -- display directory 697: if ($fnptr == $dirptr) { 698: my @file_ext = split (/\./,$listname); 699: my $curfext = $file_ext[scalar(@file_ext)-1]; 700: my $curdir = $startdir.$filecom[0].'/'; 701: my $anchor = $curdir; 702: $anchor =~ s/\///g; 703: $r->print("<tr>$extrafield<td bgcolor=$fileclr valign=bottom>"); 704: &begin_form ($r,$curdir); 705: my $indentm1 = $indent-1; 706: if ($indentm1 < 11 and $indentm1 > 0) { 707: $r->print("<img src=",$iconpath,"whitespace",$indentm1, 708: ".gif border='0' />\n"); 709: } else { 710: my $ten = int($indentm1/10.); 711: my $rem = $indentm1%10.0; 712: my $count = 0; 713: while ($count < $ten) { 714: $r->print ("<img src=",$iconpath 715: ,"whitespace10.gif border='0' />\n"); 716: $count++; 717: } 718: $r->print ("<img src=",$iconpath,"whitespace",$rem, 719: ".gif border='0' />\n") if $rem > 0; 720: } 721: $r->print ('<input type="hidden" name="acts" value="">'); 722: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath. 723: 'folder_pointer_'.$diropen.'.gif"'); 724: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'. 725: "\n"); 726: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src="'. 727: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'. 728: "\n"); 729: $r->print ("$listname$tabtag</tr></form>\n"); 730: } 731: 732: } 733: 734: # ------------------- prints the beginning of a form for directory or file link 735: sub begin_form { 736: my ($r,$uri) = @_; 737: my $anchor = $uri; 738: $anchor =~ s/\///g; 739: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri. 740: '#'.$anchor. 741: '" onSubmit="return rep_dirpath(\''.$dnum.'\''. 742: ',document.forms.fileattr.acts.value)" '. 743: 'enctype="application/x-www-form-urlencoded">'."\n"); 744: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'">'. 745: "\n"); 746: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n"); 747: $dnum++; 748: } 749: 750: # ----------- grab unprocessed CGI variables that may have been appended to URL 751: sub get_unprocessed_cgi { 752: foreach (split(/&/,$ENV{'QUERY_STRING'})) { 753: my ($name, $value) = split(/=/,$_); 754: $value =~ tr/+/ /; 755: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; 756: if ($name eq 'catalogmode' or $name eq 'launch' or $name eq 'acts') { 757: $ENV{'form.'.$name}=$value; 758: } 759: } 760: } 761: 762: # --------- settings whenever the user causes the indexer window to be launched 763: sub start_fresh_session { 764: delete $hash{'mode_catalog'}; 765: foreach (keys %hash) { 766: if ($_ =~ /^pre_/) { 767: delete $hash{$_}; 768: } 769: if ($_ =~ /^store/) { 770: delete $hash{$_}; 771: } 772: } 773: } 774: 775: 1; 776: 777: =head1 NAME 778: 779: Apache::lonindexer - mod_perl module for cross server filesystem browsing 780: 781: =head1 SYNOPSIS 782: 783: Invoked by /etc/httpd/conf/srm.conf: 784: 785: <LocationMatch "^/res.*/$"> 786: SetHandler perl-script 787: PerlHandler Apache::lonindexer 788: </LocationMatch> 789: 790: =head1 INTRODUCTION 791: 792: This module enables a scheme of browsing across a cross server. 793: 794: This is part of the LearningOnline Network with CAPA project 795: described at http://www.lon-capa.org. 796: 797: =head1 BEGIN SUBROUTINE 798: 799: This routine is only run once after compilation. 800: 801: =over 4 802: 803: =item * 804: 805: Initializes %language hash table. 806: 807: =back 808: 809: =head1 HANDLER SUBROUTINE 810: 811: This routine is called by Apache and mod_perl. 812: 813: =over 4 814: 815: =item * 816: 817: read in machine configuration variables 818: 819: =item * 820: 821: see if called from an interactive mode 822: 823: =item * 824: 825: refresh environment with user database values (in %hash) 826: 827: =item * 828: 829: define extra fields and buttons in case of special mode 830: 831: =item * 832: 833: set catalogmodefunctions to have extra needed javascript functionality 834: 835: =item * 836: 837: print header 838: 839: =item * 840: 841: evaluate actions from previous page (both cumulatively and chronologically) 842: 843: =item * 844: 845: output title 846: 847: =item * 848: 849: get state of file attributes to be showing 850: 851: =item * 852: 853: output state of file attributes to be showing 854: 855: =item * 856: 857: output starting row to the indexed file/directory hierarchy 858: 859: =item * 860: 861: read in what directories have previously been set to "open" 862: 863: =item * 864: 865: if not at top level, provide an uplink arrow 866: 867: =item * 868: 869: recursively go through all the directories and output as appropriate 870: 871: =item * 872: 873: information useful for group import 874: 875: =item * 876: 877: end the tables 878: 879: =item * 880: 881: end the output and return 882: 883: =back 884: 885: =head1 OTHER SUBROUTINES 886: 887: =over 4 888: 889: =item * 890: 891: scanDir - recursive scan of a directory 892: 893: =item * 894: 895: get_list - get complete matched list based on the uri (returns an array) 896: 897: =item * 898: 899: match_ext - filters out files based on extensions (returns an array) 900: 901: =item * 902: 903: display_line - displays one line in appropriate table format 904: 905: =item * 906: 907: begin_form - prints the beginning of a form for directory or file link 908: 909: =item * 910: 911: get_unprocessed_cgi - grab unprocessed CGI variables that may have been 912: appended to URL 913: 914: =item * 915: 916: start_fresh_session - settings whenever the user causes the indexer window 917: to be launched 918: 919: =back 920: 921: =cut