loncom/publisher/lonretrieve.pm - view

File: [LON-CAPA] / loncom / publisher / lonretrieve.pm
Revision 1.22: download - view: text, annotated - select for diffs
Mon May 19 21:53:03 2003 UTC (20 years, 11 months ago) by albertel
Branches: MAIN
CVS tags: version_1_0_3, version_1_0_2, version_1_0_1, version_1_0_0, version_0_99_5, version_0_99_4, version_0_99_3, version_0_99_2, version_0_99_1, version_0_99_0, conference_2003, HEAD

- didn't like )1.problem

1: # The LearningOnline Network with CAPA 2: # Handler to retrieve an old version of a file 3: # 4: # $Id: lonretrieve.pm,v 1.22 2003/05/19 21:53:03 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: # 29: # (Publication Handler 30: # 31: # (TeX Content Handler 32: # 33: # YEAR=2000 34: # 05/29/00,05/30,10/11 Gerd Kortemeyer) 35: # 36: # 11/28,11/29,11/30,12/01,12/02,12/04,12/23 Gerd Kortemeyer 37: # YEAR=2001 38: # 03/23 Guy Albertelli 39: # 03/24,03/29 Gerd Kortemeyer) 40: # 41: # 03/31,04/03,05/02,05/09,06/23,08/20 Gerd Kortemeyer 42: # 43: ### 44: 45: package Apache::lonretrieve; 46: 47: use strict; 48: use Apache::File; 49: use File::Copy; 50: use Apache::Constants qw(:common :http :methods); 51: use Apache::loncacc; 52: use Apache::loncommon(); 53: 54: # ------------------------------------ Interface for selecting previous version 55: sub phaseone { 56: my ($r,$fn,$uname,$udom)=@_; 57: my $docroot=$r->dir_config('lonDocRoot'); 58: 59: my $urldir='/res/'.$udom.'/'.$uname.$fn; 60: $urldir=~s/\/[^\/]+$/\//; 61: 62: my $resfn=$docroot.'/res/'.$udom.'/'.$uname.$fn; 63: my $resdir=$resfn; 64: $resdir=~s/\/[^\/]+$/\//; 65: 66: $fn=~/\/([^\/]+)\.(\w+)$/; 67: my $main=$1; 68: my $suffix=$2; 69: 70: if (-e $resfn) { 71: $r->print('<form action=/adm/retrieve method=post>'. 72: '<input type=hidden name=filename value="/~'.$uname.$fn.'">'. 73: '<input type=hidden name=phase value=two>'. 74: '<table border=2><tr><th>Select</th><th>Version</th>'. 75: '<th>Became this version on ...</th>'. 76: '<th>Metadata</th></tr>'); 77: my $filename; 78: opendir(DIR,$resdir); 79: while ($filename=readdir(DIR)) { 80: if ($filename=~/^\Q$main\E\.(\d+)\.\Q$suffix\E$/) { 81: my $version=$1; 82: my ($rdev,$rino,$rmode,$rnlink, 83: $ruid,$rgid,$rrdev,$rsize, 84: $ratime,$rmtime,$rctime, 85: $rblksize,$rblocks)=stat($resdir.'/'.$filename); 86: $r->print('<tr><td><input type=radio name=version value="'. 87: $version.'"></td><th>'.$version.'</th><td>'. 88: localtime($rmtime).'</td><td>'. 89: '<a href="'.$urldir.$filename.'.meta" target=cat>'. 90: 'Metadata Version '.$version.'</a>'); 91: if (&Apache::loncommon::fileembstyle($suffix) eq 'ssi') { 92: $r->print( 93: '  <a target=cat href="/adm/diff?filename=/~'. 94: $uname.$fn. 95: '&versiontwo=priv&versiontwo='.$version. 96: '">Diffs with Version '.$version.'</a>'); 97: } 98: $r->print('</a></td></tr>'); 99: } 100: } 101: closedir(DIR); 102: my ($rdev,$rino,$rmode,$rnlink, 103: $ruid,$rgid,$rrdev,$rsize, 104: $ratime,$rmtime,$rctime, 105: $rblksize,$rblocks)=stat($resfn); 106: $r->print('<tr><td><input type=radio name=version value="new"></td>'. 107: '<th>Current</th><td>'.localtime($rmtime). 108: '</td><td><a href="'.$urldir.$main.'.'.$suffix.'.meta" target=cat>'. 109: 'Metadata current version</a>'); 110: if (&Apache::loncommon::fileembstyle($suffix) eq 'ssi') { 111: $r->print( 112: '  <a target=cat href="/adm/diff?filename=/~'. 113: $uname.$fn. 114: '&versiontwo=priv'. 115: '">Diffs with current Version</a>'); 116: } 117: $r->print('</td></tr></table><p>'. 118: '<font size=+1 color=red>Retrieval of an old version will '. 119: 'overwrite the file currently in construction space</font><p>'. 120: '<input type=submit value="Retrieve version"></form>'); 121: } else { 122: $r->print('<h3>No previous versions published.</h3>'); 123: } 124: } 125: 126: # ---------------------------------- Interface for presenting specified version 127: sub phasetwo { 128: my ($r,$fn,$uname,$udom)=@_; 129: if ($ENV{'form.version'}) { 130: my $version=$ENV{'form.version'}; 131: if ($version eq 'new') { 132: $r->print('<h3>Retrieving current (most recent) version</h3>'); 133: } else { 134: $r->print('<h3>Retrieving old version '.$version.'</h3>'); 135: } 136: my $logfile; 137: my $ctarget='/home/'.$uname.'/public_html'.$fn; 138: my $vfn=$fn; 139: if ($version ne 'new') { 140: $vfn=~s/\.(\w+)$/\.$version\.$1/; 141: } 142: my $csource=$r->dir_config('lonDocRoot').'/res/'.$udom.'/'.$uname.$vfn; 143: unless ($logfile=Apache::File->new('>>'.$ctarget.'.log')) { 144: $r->print( 145: '<font color=red>No write permission to user directory, FAIL</font>'); 146: } 147: print $logfile 148: "\n\n================= Retrieve ".localtime()." ================\n". 149: "Version: $version\nSource: $csource\nTarget: $ctarget\n"; 150: $r->print('<p>Copying file: '); 151: if (copy($csource,$ctarget)) { 152: $r->print('ok<p>'); 153: print $logfile "Copied sucessfully.\n\n"; 154: } else { 155: my $error=$!; 156: $r->print('fail, '.$error.'<p>'); 157: print $logfile "Copy failed: $error\n\n"; 158: } 159: $r->print('<font size=+2><a href="/priv/'.$uname.$fn. 160: '">Back to '.$fn.'</a></font>'); 161: } else { 162: $r->print( 163: '<font size=+1 color=red>Please pick a version to retrieve</font><p>'); 164: &phaseone($r,$fn,$uname,$udom); 165: } 166: } 167: 168: # ---------------------------------------------------------------- Main Handler 169: sub handler { 170: 171: my $r=shift; 172: 173: my $fn; 174: 175: 176: # Get query string for limited number of parameters 177: 178: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, 179: ['filename']); 180: 181: if ($ENV{'form.filename'}) { 182: $fn=$ENV{'form.filename'}; 183: $fn=~s/^http\:\/\/[^\/]+//; 184: } else { 185: $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}. 186: ' unspecified filename for retrieval', $r->filename); 187: return HTTP_NOT_FOUND; 188: } 189: 190: unless ($fn) { 191: $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}. 192: ' trying to retrieve non-existing file', $r->filename); 193: return HTTP_NOT_FOUND; 194: } 195: 196: # ----------------------------------------------------------- Start page output 197: my $uname; 198: my $udom; 199: 200: ($uname,$udom)= 201: &Apache::loncacc::constructaccess($fn,$r->dir_config('lonDefDomain')); 202: unless (($uname) && ($udom)) { 203: $r->log_reason($uname.' at '.$udom. 204: ' trying to publish file '.$ENV{'form.filename'}. 205: ' ('.$fn.') - not authorized', 206: $r->filename); 207: return HTTP_NOT_ACCEPTABLE; 208: } 209: 210: $fn=~s/\/\~(\w+)//; 211: 212: $r->content_type('text/html'); 213: $r->send_http_header; 214: 215: $r->print('<html><head><title>LON-CAPA Construction Space</title></head>'); 216: 217: $r->print(&Apache::loncommon::bodytag('Retrieve Published Resources')); 218: 219: 220: $r->print('<h1>Retrieve previous versions of <tt>'.$fn.'</tt></h1>'); 221: 222: if (($uname ne $ENV{'user.name'}) || ($udom ne $ENV{'user.domain'})) { 223: $r->print('<h3><font color=red>Co-Author: '.$uname.' at '.$udom. 224: '</font></h3>'); 225: } 226: 227: 228: if ($ENV{'form.phase'} eq 'two') { 229: &phasetwo($r,$fn,$uname,$udom); 230: } else { 231: &phaseone($r,$fn,$uname,$udom); 232: } 233: 234: $r->print('</body></html>'); 235: return OK; 236: } 237: 238: 1; 239: __END__ 240: 241: =head1 NAME 242: 243: Apache::lonretrieve - retrieves an old version of a file 244: 245: =head1 SYNOPSIS 246: 247: Invoked by /etc/httpd/conf/srm.conf: 248: 249: <Location /adm/retrieve> 250: PerlAccessHandler Apache::lonacc 251: SetHandler perl-script 252: PerlHandler Apache::lonretrieve 253: ErrorDocument 403 /adm/login 254: ErrorDocument 404 /adm/notfound.html 255: ErrorDocument 406 /adm/unauthorized.html 256: ErrorDocument 500 /adm/errorhandler 257: </Location> 258: 259: =head1 INTRODUCTION 260: 261: This module retrieves an old published version of a file. 262: 263: This is part of the LearningOnline Network with CAPA project 264: described at http://www.lon-capa.org. 265: 266: =head1 HANDLER SUBROUTINE 267: 268: This routine is called by Apache and mod_perl. 269: 270: =over 4 271: 272: =item * 273: 274: Get query string for limited number of parameters 275: 276: =item * 277: 278: Start page output 279: 280: =item * 281: 282: print phase relevant output 283: 284: =item * 285: 286: (phase one is to select version; phase two retrieves version) 287: 288: =back 289: 290: =head1 OTHER SUBROUTINES 291: 292: =over 4 293: 294: =item * 295: 296: phaseone() : Interface for selecting previous version. 297: 298: =item * 299: 300: phasetwo() : Interface for presenting specified version. 301: 302: =back 303: 304: =cut