loncom/publisher/lonretrieve.pm - view

File: [LON-CAPA] / loncom / publisher / lonretrieve.pm
Revision 1.23: download - view: text, annotated - select for diffs
Mon Sep 22 15:39:53 2003 UTC (20 years, 8 months ago) by www
Branches: MAIN
CVS tags: version_1_1_X, version_1_1_3, version_1_1_2, version_1_1_1, version_1_1_0, version_1_0_99_3, version_1_0_99_2, version_1_0_99_1, version_1_0_99, HEAD

Internationalization.

1: # The LearningOnline Network with CAPA 2: # Handler to retrieve an old version of a file 3: # 4: # $Id: lonretrieve.pm,v 1.23 2003/09/22 15:39:53 www 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: use Apache::lonlocal; 54: 55: # ------------------------------------ Interface for selecting previous version 56: sub phaseone { 57: my ($r,$fn,$uname,$udom)=@_; 58: my $docroot=$r->dir_config('lonDocRoot'); 59: 60: my $urldir='/res/'.$udom.'/'.$uname.$fn; 61: $urldir=~s/\/[^\/]+$/\//; 62: 63: my $resfn=$docroot.'/res/'.$udom.'/'.$uname.$fn; 64: my $resdir=$resfn; 65: $resdir=~s/\/[^\/]+$/\//; 66: 67: $fn=~/\/([^\/]+)\.(\w+)$/; 68: my $main=$1; 69: my $suffix=$2; 70: 71: if (-e $resfn) { 72: $r->print('<form action=/adm/retrieve method=post>'. 73: '<input type=hidden name=filename value="/~'.$uname.$fn.'">'. 74: '<input type=hidden name=phase value=two>'. 75: '<table border=2><tr><th>'.&mt('Select').'</th><th>'. 76: &mt('Version').'</th>'. 77: '<th>'.&mt('Became this version on ...').'</th>'. 78: '<th>'.&mt('Metadata').'</th></tr>'); 79: my $filename; 80: opendir(DIR,$resdir); 81: while ($filename=readdir(DIR)) { 82: if ($filename=~/^\Q$main\E\.(\d+)\.\Q$suffix\E$/) { 83: my $version=$1; 84: my ($rdev,$rino,$rmode,$rnlink, 85: $ruid,$rgid,$rrdev,$rsize, 86: $ratime,$rmtime,$rctime, 87: $rblksize,$rblocks)=stat($resdir.'/'.$filename); 88: $r->print('<tr><td><input type=radio name=version value="'. 89: $version.'"></td><th>'.$version.'</th><td>'. 90: localtime($rmtime).'</td><td>'. 91: '<a href="'.$urldir.$filename.'.meta" target=cat>'. 92: &mt('Metadata Version').' '.$version.'</a>'); 93: if (&Apache::loncommon::fileembstyle($suffix) eq 'ssi') { 94: $r->print( 95: '  <a target=cat href="/adm/diff?filename=/~'. 96: $uname.$fn. 97: '&versiontwo=priv&versiontwo='.$version. 98: '">'.&mt('Diffs with Version').' '.$version.'</a>'); 99: } 100: $r->print('</a></td></tr>'); 101: } 102: } 103: closedir(DIR); 104: my ($rdev,$rino,$rmode,$rnlink, 105: $ruid,$rgid,$rrdev,$rsize, 106: $ratime,$rmtime,$rctime, 107: $rblksize,$rblocks)=stat($resfn); 108: $r->print('<tr><td><input type=radio name=version value="new"></td>'. 109: '<th>'.&mt('Current').'</th><td>'.localtime($rmtime). 110: '</td><td><a href="'.$urldir.$main.'.'.$suffix.'.meta" target=cat>'. 111: &mt('Metadata current version').'</a>'); 112: if (&Apache::loncommon::fileembstyle($suffix) eq 'ssi') { 113: $r->print( 114: '  <a target=cat href="/adm/diff?filename=/~'. 115: $uname.$fn. 116: '&versiontwo=priv'. 117: '">'.&mt('Diffs with current Version').'</a>'); 118: } 119: $r->print('</td></tr></table><p>'. 120: '<font size=+1 color=red>'. 121: &mt('Retrieval of an old version will overwrite the file currently in construction space').'</font><p>'. 122: '<input type=submit value="'.&mt('Retrieve version').'"></form>'); 123: } else { 124: $r->print('<h3>'.&mt('No previous versions published.').'</h3>'); 125: } 126: } 127: 128: # ---------------------------------- Interface for presenting specified version 129: sub phasetwo { 130: my ($r,$fn,$uname,$udom)=@_; 131: if ($ENV{'form.version'}) { 132: my $version=$ENV{'form.version'}; 133: if ($version eq 'new') { 134: $r->print('<h3>'.&mt('Retrieving current (most recent) version').'</h3>'); 135: } else { 136: $r->print('<h3>'.&mt('Retrieving old version').' '.$version.'</h3>'); 137: } 138: my $logfile; 139: my $ctarget='/home/'.$uname.'/public_html'.$fn; 140: my $vfn=$fn; 141: if ($version ne 'new') { 142: $vfn=~s/\.(\w+)$/\.$version\.$1/; 143: } 144: my $csource=$r->dir_config('lonDocRoot').'/res/'.$udom.'/'.$uname.$vfn; 145: unless ($logfile=Apache::File->new('>>'.$ctarget.'.log')) { 146: $r->print( 147: '<font color=red>'.&mt('No write permission to user directory, FAIL').'</font>'); 148: } 149: print $logfile 150: "\n\n================= Retrieve ".localtime()." ================\n". 151: "Version: $version\nSource: $csource\nTarget: $ctarget\n"; 152: $r->print('<p>'.&mt('Copying file').': '); 153: if (copy($csource,$ctarget)) { 154: $r->print('ok<p>'); 155: print $logfile "Copied sucessfully.\n\n"; 156: } else { 157: my $error=$!; 158: $r->print('fail, '.$error.'<p>'); 159: print $logfile "Copy failed: $error\n\n"; 160: } 161: $r->print('<font size=+2><a href="/priv/'.$uname.$fn. 162: '">'.&mt('Back to').' '.$fn.'</a></font>'); 163: } else { 164: $r->print( 165: '<font size=+1 color=red>'.&mt('Please pick a version to retrieve').'</font><p>'); 166: &phaseone($r,$fn,$uname,$udom); 167: } 168: } 169: 170: # ---------------------------------------------------------------- Main Handler 171: sub handler { 172: 173: my $r=shift; 174: 175: my $fn; 176: 177: 178: # Get query string for limited number of parameters 179: 180: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, 181: ['filename']); 182: 183: if ($ENV{'form.filename'}) { 184: $fn=$ENV{'form.filename'}; 185: $fn=~s/^http\:\/\/[^\/]+//; 186: } else { 187: $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}. 188: ' unspecified filename for retrieval', $r->filename); 189: return HTTP_NOT_FOUND; 190: } 191: 192: unless ($fn) { 193: $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}. 194: ' trying to retrieve non-existing file', $r->filename); 195: return HTTP_NOT_FOUND; 196: } 197: 198: # ----------------------------------------------------------- Start page output 199: my $uname; 200: my $udom; 201: 202: ($uname,$udom)= 203: &Apache::loncacc::constructaccess($fn,$r->dir_config('lonDefDomain')); 204: unless (($uname) && ($udom)) { 205: $r->log_reason($uname.' at '.$udom. 206: ' trying to publish file '.$ENV{'form.filename'}. 207: ' ('.$fn.') - not authorized', 208: $r->filename); 209: return HTTP_NOT_ACCEPTABLE; 210: } 211: 212: $fn=~s/\/\~(\w+)//; 213: 214: &Apache::loncommon::content_type($r,'text/html'); 215: $r->send_http_header; 216: 217: $r->print('<html><head><title>LON-CAPA Construction Space</title></head>'); 218: 219: $r->print(&Apache::loncommon::bodytag('Retrieve Published Resources')); 220: 221: 222: $r->print('<h1>'.&mt('Retrieve previous versions of').' <tt>'.$fn.'</tt></h1>'); 223: 224: if (($uname ne $ENV{'user.name'}) || ($udom ne $ENV{'user.domain'})) { 225: $r->print('<h3><font color=red>'.&mt('Co-Author').': '.$uname. 226: &mt(' at ').$udom. 227: '</font></h3>'); 228: } 229: 230: 231: if ($ENV{'form.phase'} eq 'two') { 232: &phasetwo($r,$fn,$uname,$udom); 233: } else { 234: &phaseone($r,$fn,$uname,$udom); 235: } 236: 237: $r->print('</body></html>'); 238: return OK; 239: } 240: 241: 1; 242: __END__ 243: 244: =head1 NAME 245: 246: Apache::lonretrieve - retrieves an old version of a file 247: 248: =head1 SYNOPSIS 249: 250: Invoked by /etc/httpd/conf/srm.conf: 251: 252: <Location /adm/retrieve> 253: PerlAccessHandler Apache::lonacc 254: SetHandler perl-script 255: PerlHandler Apache::lonretrieve 256: ErrorDocument 403 /adm/login 257: ErrorDocument 404 /adm/notfound.html 258: ErrorDocument 406 /adm/unauthorized.html 259: ErrorDocument 500 /adm/errorhandler 260: </Location> 261: 262: =head1 INTRODUCTION 263: 264: This module retrieves an old published version of a file. 265: 266: This is part of the LearningOnline Network with CAPA project 267: described at http://www.lon-capa.org. 268: 269: =head1 HANDLER SUBROUTINE 270: 271: This routine is called by Apache and mod_perl. 272: 273: =over 4 274: 275: =item * 276: 277: Get query string for limited number of parameters 278: 279: =item * 280: 281: Start page output 282: 283: =item * 284: 285: print phase relevant output 286: 287: =item * 288: 289: (phase one is to select version; phase two retrieves version) 290: 291: =back 292: 293: =head1 OTHER SUBROUTINES 294: 295: =over 4 296: 297: =item * 298: 299: phaseone() : Interface for selecting previous version. 300: 301: =item * 302: 303: phasetwo() : Interface for presenting specified version. 304: 305: =back 306: 307: =cut