viewvc.cgi/docman2/docman.php

<?php

/*
 *      Document Manager ][
 *
 *      Dobrica Pavlinusic <dpavlin@rot13.org>
 *
 *      License: GPL2
 *
 *      Document Manager 1.x was based on
 *      Copyright 1999 by John Martin d/b/a www.ANYPORTAL.com
 *      PHP version Copyright 2000 by Stefan@Wiesendanger.org
 *
 *      For more info, please see web pages at
 *      http://www.rot13.org/~dpavlin/docman.html
 *
 */


//////////////////////////////////////////////////////////////////
// CONFIGURATION OPTIONS

        error_reporting(E_ALL) ;                // how verbose ?

        // from where to include auth_*.php modules?
        $gblIncDir = "/data/docman2";

        // force download on view (so it won't open in associated application)
        $gblForceDownload = 0;

        // date format
        $gblDateFmt="Y-m-d";
//      $gblDateFmt="D, F d, Y";

        // time format
        $gblTimeFmt="H:i:s";
//      $gblTimeFmt="g:i:sA";

        // Number of backup files to keep
        $gblNumBackups=3;

        // show red star if newer than ... days
        $gblModDays=1;

        // choose GifIcon below unless you have the M$
        // WingDings font installed on your system

        $gblIcon="GifIcon";             // MockIcon or GifIcon

        // the directory below should be /icons/ or /icons/small/ 
        // on Apache; a set of icons is included in the distribution

        $gblIconLocation="/icons/"; 

        // files you want to be able to edit in text mode
        // and view with (primitive) syntax highlighting

        $gblEditable = array( ".txt",".asa",".asp",".htm",".html",
                              ".cfm",".php3",".php",".phtml",
                              ".shtml",".css" ) ;

        // files that will display as images on the detail page
        // (useless if your browser doesn't support them)

        $gblImages   = array( ".jpg",".jpeg",".gif",".png",".ico",
                              ".bmp",".xbm") ;

        // which files to hide (separated by ,)
        $gblHide = "";

        // Where are users? (by default in .htusers file)
        $gblUsers = "file";

//////////////////////////////////////////////////////////////////

        $gblTitle = "Document Manager";
        $gblVersion = "2.0-pre2";

        $secHash    = "";

        // location of html files
        $html = $gblIncDir."/html";

        if (isset($HTTP_SERVER_VARS["HTTP_ACCEPT_LANGUAGE"])) {
                LoadLanguage($HTTP_SERVER_VARS["HTTP_ACCEPT_LANGUAGE"]);
        }

        // for security and configuration
        $realm=$HTTP_SERVER_VARS["HTTP_HOST"];

        $fsDocumentRoot = dirname($HTTP_SERVER_VARS["SCRIPT_FILENAME"]);
        if ($fsDocumentRoot == "") Error("Configuration error","Can't get SCRIPT_FILENAME from your web server. Please set <tt>\$fsDocumentRoot</tt> in <tt>\$</tt>",1);

        // globals for later
        $gblLogin = HTTP_SERVER_VAR("PHP_AUTH_USER");
        $gblPasswd = HTTP_SERVER_VAR("PHP_AUTH_PW");

//////////////////////////////////////////////////////////////////

function LoadLanguage($lang) {

        global $gblIncDir,$html;

        if (file_exists($gblIncDir."/lang/$lang.php")) {
                include($gblIncDir."/lang/$lang.php");
                $html .= "-$lang";
        } else {
                include($gblIncDir."/lang/default.php");
        }
}

function StartHTML($title,$text="") {

        global $html,$fsDocumentRoot,$gblTitle,$HTTP_SERVER_VARS;

        $host  = $HTTP_SERVER_VARS["HTTP_HOST"] ;
        $self  = $HTTP_SERVER_VARS["PHP_SELF"] ;

        if (file_exists("$fsDocumentRoot/docman.css")) {
                $css=dirname($self)."/docman.css";
        } else {
                $css=$self."?STYLE=get";
        }

        include("$html/head.html");
}

//////////////////////////////////////////////////////////////////

function EndHTML() {

        global $gblDateFmt, $gblTimeFmt, $gblUserName, $PHP_SELF,
                $secHash, $gblVersion, $html,
                $gblLogin,$gblPasswd;

        $url = $PHP_SELF."?relogin=";
        if (isset($secHash) && $secHash != "") {
                $url .= $secHash;
        } else {
                $url .= md5($gblLogin.$gblPasswd);
        }
        if ( (  (isset($gblLogin) && $gblLogin != "") ||
                (!isset($gblLogin) || $gblLogin == "")
             ) && ($gblPasswd == "" || !isset($gblPasswd))) {
                $url_title="login";
                $url .= "&force_login=1";
        } else {
                $url_title="relogin";
        }
        include("$html/footer.html");

#       global $debug;
#       if ($debug) print $debug;
} // end function EndHTML

//////////////////////////////////////////////////////////////////

function DetailPage($fsRoot,$relDir,$fn) {
        
        global $gblEditable, $gblImages,
                $gblDateFmt, $gblTimeFmt,
                $gblPermNote,
                $webRoot, $html,
                $HTTP_SERVER_VARS ;
        $self = $HTTP_SERVER_VARS["PHP_SELF"] ;

        $relPath  = $relDir . "/" . $fn ;
        $fsPath   = $fsRoot . $relPath ;
        $fsDir    = $fsRoot . $relDir ;

        $exists   = file_exists($fsPath) ;
        $ext      = strtolower(strrchr($relPath,".")) ;
        $editable = ( $ext=="" || strstr(join(" ",$gblEditable),$ext)) &&
                check_perm($relPath,trperm_w);
        $writable = is_writeable($fsPath) && check_perm($relPath,trperm_w) ;
        $writable_dir = is_writeable($fsDir) && check_perm($relDir,trperm_w) ;
        $file_lock = CheckLock($fsPath);

        if (!$editable && !$exists) 
                Error("Creation denied","Can't create <tt>$relPath</tt>") ;
        if (!$exists && !$writable_dir )
                Error("Creation denied","Can't write in directory <tt>$relDir</tt> while creating <tt>$relPath</tt>for which user has permissions.",1);

        $text  = _("Use this page to view, modify or ") ;
        if (is_dir($fsPath)) {
                $text .=_("delete a directory on this ") ;
        } else {
                $text .= _("delete a single document on this ") ;
        };
        $text .= _("web site.") ;       
        $title = "("._("Detail Page").")" ;
        StartHTML($title, $text) ;

        print "<H3>".$relDir.$fn."</H3>";

        if ($exists) {  // get file info
                $fsize = filesize($fsPath) ; 
                $fmodified = date("$gblDateFmt $gblTimeFmt", filemtime($fsPath)) ;
                $faccessed = date("$gblDateFmt $gblTimeFmt", fileatime($fsPath)) ;
                $fuid=fileowner($fsPath);
                $fgid=filegroup($fsPath);
                $userinfo = posix_getpwuid($fuid);
                $grpinfo = posix_getgrgid($fgid);

                include("$html/DetailPage-file.html");
        }

        if ( !is_dir($fsPath) && $editable && ($writable || !$exists) && !$file_lock ) { 
                $fh = fopen($fsPath,"a+") ;
                rewind($fh) ;
                $fstr = fread($fh,filesize($fsPath)) ;
                fclose($fh) ;
                $fstr = htmlentities( $fstr ) ;

                include("$html/DetailPage-edit.html");
        }
        if ( !$file_lock && $ext!="" && strstr(join(' ',$gblImages),$ext) ) {  
                $info  = getimagesize($fsPath) ;
                $tstr = "<IMG SRC=\"$self?A=V&D=".urlpath(dirname($relPath))."&F=".urlpath(basename($relPath))."\" BORDER=0 " ;
                $tstr .= $info[3] . " ALT=\"" . $fn . " - " ;
                $tstr .= (int)(($fsize+1023)/1024) . "Kb\">" ;
//              echo htmlentities($tstr) . "<BR><BR>" . $tstr ;
                echo $tstr ;
        }


        print '<FORM ACTION="'.$self.'" METHOD="POST">
                <INPUT TYPE="HIDDEN" NAME="DIR" VALUE="'.$relDir.'">
                <INPUT TYPE="HIDDEN" NAME="FN" VALUE="'.$fn.'">
                <INPUT TYPE="SUBMIT" NAME="POSTACTION" VALUE="CANCEL"><BR>
                ';

        if ($file_lock && check_perm($relDir.$fn,trperm_w)) {
                include("$html/DetailPage-unlock.html");
        } // file_lock

        if (substr($fn,0,4) == ".del") {
                $action="UNDELETE";
                $desc="undelete previously deleted file";
        } else {
                $action="DELETE";
                $desc="delete";
        }

        if ($exists && $writable) {
                include("$html/DetailPage-undelete.html");
                include("$html/DetailPage-rename.html");

        }
        
        if (check_perm($relDir.$fn,$gblPermNote)) {
                include("$html/DetailPage-note.html");
        }

        print "</FORM>";

        $name=basename("$fsDir/$fn");
        $logname=dirname("$fsDir/$fn")."/.log/$name";
        $bakdir=dirname("$fsDir/$fn")."/.bak";
        if (file_exists($logname)) {
                $log=fopen($logname,"r");
                $cl1=" class=LST"; $cl2="";
                $logarr = array();
                while($line = fgetcsv($log,512,"\t")) {
                        $cl=$cl1; $cl1=$cl2; $cl2=$cl;
                        array_unshift($logarr,array($cl,$line[0],$line[1],$line[2],$line[3]));
                }
                fclose($log);
                if (is_dir("$fsDir/$fn")) {
                        $whatis="DIRECTORY";
                } else {
                        $whatis="FILE";
                }
                print "<hr><br><b>CHANGES TO THIS $whatis</b><br><table border=0 width=100%>\n";
                $bakcount = 0;  // start from 0, skip fist backup (it's current)
                while ($e = array_shift($logarr)) {
                        if (strstr($e[4],"upload")) {
                                if (file_exists("$bakdir/$bakcount/$name")) {
                                        $e[4]="<a href=\"$webRoot".urlpath(dirname($relPath)."/.bak/$bakcount/$name")."\">$e[4]</a>";
                                }
                                $bakcount++;
                        }
                        print "<tr><td$e[0]>$e[1]</td><td$e[0]>$e[2]</td><td$e[0]>$e[3]</td><td$e[0]>$e[4]</td></tr>\n";
                }
                print "</table>";
        }

        EndHTML() ;

} // end function DetailPage

//////////////////////////////////////////////////////////////////

function DisplayCode($fsRoot,$relDir,$fn) {

        $path = $fsRoot . $relDir . "/" . $fn ;

        if (!file_exists($path)) Error("File not found",$path) ;

        StartHTML("(".$relDir."/".$fn.")","");

        $tstr = join("",file($path)) ;
        $tstr = htmlentities($tstr) ;

        // Tabs
        $tstr = str_replace(chr(9),"   ",$tstr) ;  

        // ASP tags & XML/PHP tags
        $aspbeg = "<SPAN CLASS=XML>&lt;%</SPAN><SPAN CLASS=BLK>" ;
        $aspend = "</SPAN><SPAN CLASS=XML>%&gt;</SPAN>" ;
        $tstr = str_replace("&lt;%",$aspbeg,$tstr) ;
        $tstr = str_replace("%&gt;",$aspend,$tstr) ;    

        $xmlbeg = "<SPAN CLASS=XML>&lt;?</SPAN><SPAN CLASS=BLK>" ;
        $xmlend = "</SPAN><SPAN CLASS=XML>?&gt;</SPAN>" ;
        $tstr = str_replace("&lt;?",$xmlbeg,$tstr) ;
        $tstr = str_replace("?&gt;",$xmlend,$tstr) ;    

        // C style comment
        $tstr = str_replace("/*","<SPAN CLASS=REM>/*",$tstr) ;  
        $tstr = str_replace("*/","*/</SPAN>",$tstr) ;                   

        // HTML comments
        $tstr = str_replace("&lt;!--","<I CLASS=RED>&lt;!--",$tstr) ;  
        $tstr = str_replace("--&gt;","--&gt;</I>",$tstr) ;  

        echo "<PRE>" ;  

        $tstr = split("\n",$tstr) ;
        for ($i = 0 ; $i < sizeof($tstr) ; ++$i) {
                // add line numbers
                echo "<BR><EM>" ;
                echo substr(("000" . ($i+1)), -4) . ":</EM> " ;
                $line = $tstr[$i] ;
                // C++ style comments
                $pos = strpos($line,"//") ;
                // exceptions: two slashes aren't a script comment
                if (strstr($line,"//") &&
                    ! ($pos>0 && substr($line,$pos-1,1)==":") &&
                    ! (substr($line,$pos,8) == "//--&gt;") &&
                    ! (substr($line,$pos,9) == "// --&gt;")) {
                 $beg = substr($line,0,strpos($line,"//")) ;
                 $end = strstr($line,"//") ;
                 $line = $beg."<SPAN CLASS=REM>".$end."</SPAN>";
                }
                // shell & asp style comments
                $first = substr(ltrim($line),0,1) ;
                if ($first == "#" || $first == "'") {
                 $line = "<SPAN CLASS=REM>".$line."</SPAN>";
                }
                print($line) ;
        } // next i

        echo "</PRE>" ;
                
        EndHTML() ;

} // end function DisplayCode

//////////////////////////////////////////////////////////////////

function MockIcon($txt) {
        $tstr = "<SPAN CLASS=MCK>" ;

        switch (strtolower($txt)) {
        case ".bmp" :
        case ".gif" :
        case ".jpg" :
        case ".jpeg":
        case ".tif" :
        case ".tiff":
                $d = 176 ;
                break ;
        case ".doc" :
                $d = 50 ;
                break ;
        case ".exe" :
        case ".bat" :
                $d = 255 ;
                break ;
        case ".bas" :
        case ".c"   :
        case ".cc"  :
        case ".src" :
                $d = 255 ;
                break ;
        case "file" :
                $d = 51 ;
                break ;
        case "fldr" :
                $d = 48 ;
                break ;
        case ".htm" :
        case ".html":
        case ".asa" :
        case ".asp" :
        case ".cfm" :
        case ".php3":
        case ".php" :
        case ".phtml" :
        case ".shtml" :
                $d = 182 ;
                break ;
        case ".pdf" :
                $d = 38 ;
                break;
        case ".txt" :
        case ".ini" :
                $d = 52 ;
                break ;
        case ".xls" :
                $d = 252 ;
                break ;
        case ".zip" :
        case ".arc" :
        case ".sit" :
        case ".tar" :
        case ".gz"  :
        case ".tgz" :
        case ".Z"   :
                $d = 59 ;
                break ;
        case "view" :
                $d = 52 ;
                break ;
        case "up" :
                $d = 199 ;
                break ;
        case "blank" : 
                return "&nbsp;&nbsp;</SPAN>" ;
                break ;
        default :
                $d = 51 ;
        }

        return $tstr . chr($d) . "</SPAN>" ;
} // end function MockIcon

//////////////////////////////////////////////////////////////////

function GifIcon($txt = "") {
        global $gblIconLocation, $gblImages ;

        switch (strtolower($txt)) {
        case ".doc" :
                $d = "layout.gif" ;
                break ;
        case ".exe" :
        case ".bat" :
                $d = "screw2.gif" ;
                break ;
        case ".bas" :
        case ".c"   :
        case ".cc"  :
        case ".src" :
                $d = "c.gif" ;
                break ;
        case "file" :
                $d = "generic.gif" ;
                break ;
        case "fldr" :
                $d = "dir.gif" ;
                break ;
        case ".phps" :
                $d = "phps.gif" ;
                break ;
        case ".php3" :
                $d = "php3.gif" ;
                break ;
        case ".htm" :
        case ".html":
        case ".asa" :
        case ".asp" :
        case ".cfm" :
        case ".php3":
        case ".php" :
        case ".phtml" :
        case ".shtml" :
                $d = "world1.gif" ;
                break ;
        case ".pdf" :
                $d = "pdf.gif" ;
                break;
        case ".txt" :
        case ".ini" :
                $d = "text.gif" ;
                break ;
        case ".xls" :
                $d = "box2.gif" ;
                break ;
        case ".zip" :
        case ".arc" :
        case ".sit" :
        case ".tar" :
        case ".gz"  :
        case ".tgz" :
        case ".Z"   :
                $d = "compressed.gif" ;
                break ;
        case "view" :
                $d = "index.gif" ;
                break ;
        case "up" :
                $d = "back.gif" ;
                break ;
        case "blank" : 
                $d = "blank.gif" ;
                break ;
        case "checkout":
                $d = "box2.gif";
                break;
        case "checkin":
                $d = "hand.up.gif";
                break;
        case "locked":
                $d = "screw2.gif";
                break;
        case "note":
                $d = "quill.gif";
                break;
        default :
                if (in_array(strtolower($txt),$gblImages)) {
                        $d = "image2.gif" ;
                } else {
                        $d = "generic.gif" ;
                }
        }


        return "<IMG SRC=\"$gblIconLocation" . $d . "\" BORDER=0>" ;
} // end function GifIcon

//////////////////////////////////////////////////////////////////

function Navigate($fsRoot,$relDir) {

        global $gblEditable, $gblIcon, $gblModDays, $webRoot, $gblHide,
                $gblIgnoreUnknownFileType, $gblRepositoryDir,
                $gblLogin, $gblUserName, $gblDateFmt, $gblTimeFmt,
                $gblPermNote,
                $fsRealmDir, $realm, $realm_sep,
                $html, $realm_config,
                $HTTP_GET_VARS, $HTTP_SERVER_VARS;
        
        $self     = $HTTP_SERVER_VARS["PHP_SELF"] ;

        $relDir = chopsl($relDir)."/";
        $fsDir = $fsRoot.$relDir;       // current directory

        if (!is_dir($fsDir)) Error("Dir not found","Directory <tt>$relDir<tt> not found on filesystem at <tt>$fsDir</tt>",1) ; 

        global $debug;
        $debug .= "[$gblLogin|$relDir] before >";

        if (! check_perm($relDir,trperm_b))
                Error("Access denied","User <tt>$gblLogin</tt> tried to access <tt>$relDir</tt> without valid trustee.",1);
        $debug .= "< afeter";

        $hide_items=",$gblHide,";

        $dirList = array();
        $fileList = array();

        // read directory contents
        if ( !($dir = @opendir($fsDir)) ) 
                Error("Read Access denied",$relDir,1) ;
        while ($item = readdir($dir)) {
                if ( substr($item,0,1) == "." || strstr($hide_items,",$item,") ) continue ;
                if (is_dir($fsDir.$item) || is_link ($fsDir.$item)) {
                        if (check_perm($relDir.$item,trperm_b)) {
                                $dirList[$item] = $item ;
                                $dirNote[$item] = ReadNote($fsDir.$item);
                        }
                } else if (is_file($fsDir.$item)) {
                        if (check_perm($relDir.$item,trperm_r)) {
                                $fileList[$item] = $item ;              
                                $fileDate[$item] = filemtime($fsDir.$item) ;
                                $fileSize[$item] = filesize($fsDir.$item) ;
                                $fileNote[$item] = ReadNote($fsDir.$item);
                        }
                } else {
                        if (! $gblIgnoreUnknownFileType) Error("File Type Error", "Item <tt>".$fsDir.$item."</tt> is not file, directory or link. If you want to ignore errors like this, set <tt>\$gblIgnoreUnknownFileType = 1</tt> in <tt>$realm_config</tt>.",1);
                }
        }
        closedir($dir) ; 

        // scan deleted files
        if ( HTTP_GET_VAR("show_deleted") == 1 && ($dir = @opendir("$fsDir/.del")) ) {
                while ($item = readdir($dir)) {
                        if ( substr($item,0,1) == "." || strstr($hide_items,",$item,") || !check_perm($relDir.$item,trperm_w) ) continue ;
                        if (is_file($fsDir.".del/$item")) {
                                $fileList[$item] = ".del/$item" ;               
                                $fileDate[$item] = filemtime($fsDir.".del/$item") ;
                                $fileSize[$item] = filesize($fsDir.".del/$item") ;
                                $fileNote[$item] = ReadNote($fsDir.".del/$item");
                        } else {
                                $dirList[$item] = ".del/$item" ;                
                                $dirNote[$item] = ReadNote($fsDir.".del/$item");
                        }
                }
                closedir($dir) ; 
        }

        $emptyDir = ! (sizeof($dirList) || sizeof($fileList)) ;

        // start navigation page
        $text  = "Use this page to add, delete";
        if (! isset($HTTP_GET_VARS["show_deleted"])) {
                $text .= ", <a href=$self?D=".urlencode($relDir)."&show_deleted=1>undelete</a>";
        }
        $text .= " or revise files on this web site." ;
        $text .= "<br>Examine list of files <a href=\"$self?A=Ch1\">changed in last day</a> or <a href=\"$self?A=Ch\">all changes</a>.";
        StartHTML("(Navigate)",$text) ;

        print "<TABLE BORDER=0 CELLPADDING=2 CELLSPACING=3 WIDTH=\"100%\">" ;

        // updir (parent) bar   
        if (chopsl($fsDir) != chopsl($fsRoot)) {
                $parent = dirname($relDir) ;
                if ($parent == "") $parent = "/" ;

                include("$html/Navigate-parent.html");
        }

        function plural($name,$count) {
                $out="$count $name";
                if ($count > 1) {
                        $out.="s";
                }
                return $out;
        }

        $dsort = HTTP_GET_VAR("dsort");
        if (! isset($dsort)) $dsort = "name"; // default directory sort

        $dsort_arr = array(
                "name" => array ("rname", "note"),
                "rname" => array ("name", "note"),
                "note" => array ("name", "rnote"),
                "rnote" => array ("name", "note")
                );

        $fsort = HTTP_GET_VAR("fsort");
        if (! isset($fsort)) $fsort = "name"; // default directory sort

        $fsort_arr = array(
                "name" => array ("rname", "note", "date", "size"),
                "rname" => array ("name", "note", "date", "size"),
                "note" => array ("name", "rnote", "date", "size"),
                "rnote" => array ("name", "note", "date", "size"),
                "date" => array ("name", "note", "rdate", "size"),
                "rdate" => array ("name", "note", "date", "size"),
                "size" => array ("name", "note", "date", "rsize"),
                "rsize" => array ("name", "note", "date", "size")
                );

        $D="D=".urlencode($relDir);

        function self_args($arr = array()) {
                global $self;
                $arg = implode("&",$arr);
                if ($arg) {
                        return $self."?".$arg;
                } else {
                        return $self;
                }
        }
        // output subdirs
        if (sizeof($dirList) > 0) {
                switch ($dsort) {
                        case "note":
                                $items = $dirNote;
                                asort($items);
                                break;
                        case "rnote":
                                $items = $dirNote;
                                arsort($items);
                                break;
                        case "rname":
                                $items = $dirList;
                                krsort($items);
                                break;
                        default:
                                $items = $dirList;
                                ksort($items);
                                break;
                }
                $durl = self_args(array($D,"dsort=".$dsort_arr[$dsort][0]));
                $nurl = self_args(array($D,"dsort=".$dsort_arr[$dsort][1]));

                include("$html/Navigate-dirHeader.html");

                while (list($key,$dir) = each($items)) {

                        $dir = $dirList[$key];

                        $info_url=self_args(array("A"=>"A=E", "F"=>"F=".urlencode($dir), "D"=>$D));
                        if (substr($dir,0,5) == ".del/") {
                                $dir = substr($dir,5,strlen($dir)-5);
                                $deleted = " <a href=\"$info_url#undelete\"><SPAN CLASS=deleted TITLE=\"deleted\">deleted</span></a>";
                        } else {
                                $deleted = "";
                        }
        
                        $dir_url=$self."?D=".urlencode(chopsl($relDir)."/".$dir);
                        if (check_perm($relDir.$dir,$gblPermNote)) {
                                $note_html="<a href=\"$info_url#note\">".$gblIcon("note")."</a>".$dirNote[$key];
                        } else {
                                $note_html=$dirNote[$key];
                        }

                        $dir_html = isBlank($dir,"directory");

                        include("$html/Navigate-dirEntry.html");

                }  // iterate over dirs
        }  // end if no dirs

        $durl = self_args(array($D,"fsort=".$fsort_arr[$fsort][0]));
        $nurl = self_args(array($D,"fsort=".$fsort_arr[$fsort][1]));
        $uurl = self_args(array($D,"fsort=".$fsort_arr[$fsort][2]));
        $surl = self_args(array($D,"fsort=".$fsort_arr[$fsort][3]));

        $html_uri = $webRoot;

        if (substr($relDir,0,1) == "/") {
                $html_uri .= substr($relDir,1,strlen($relDir)-1);
        } else {
                $html_uri .= $relDir;
        }

        include("$html/Navigate-fileHeader.html");

        if (sizeof($fileList) > 0) {
                switch ($fsort) {
                        case "note":
                                $items = $fileNote;
                                asort($items);
                                break;
                        case "rnote":
                                $items = $fileNote;
                                arsort($items);
                                break;
                        case "date":
                                $items = $fileDate;
                                asort($items);
                                break;
                        case "rdate":
                                $items = $fileDate;
                                arsort($items);
                                break;
                        case "size":
                                $items = $fileSize;
                                asort($items);
                                break;
                        case "rsize":
                                $items = $fileSize;
                                arsort($items);
                                break;
                        case "rname":
                                $items = $fileList;
                                krsort($items);
                                break;
                        default:
                                $items = $fileList;
                                ksort($items);
                                break;
                }

          while (list($key,$file) = each($items)) {
                $file = $fileList[$key];
                $path = $fsDir."/".$file ;
                $mod  = $fileDate[$key];
                $sz   = $fileSize[$key];
        
                if ($sz >= 10240) {
                        $sz = (int)(($sz+1023)/1024) . " k" ;
                } else {
                        $sz .= " " ;
                } // end size

                $a = $b = "" ;

                $info_url=$self."?A=E&F=".urlencode($file)."&D=".urlencode($relDir);

                if ( ($mod + $gblModDays*86400) > time() ) {
                        $a  = "<SPAN CLASS=RED TITLE=\"Newer" ;
                        $a .= " than $gblModDays days\"> * </SPAN>" ;
                }

                $file_lock=CheckLock($path);

                $file_url_html="<A HREF=\"$self?A=V&D=".urlencode($relDir)."&F=".urlencode($file);
                $file_url_html.="\" TITLE=\"View file\">" ;

                if (substr($file,0,5) != ".del/") {
                        $file_url_html .= isBlank($file) . "</A>" . $a ;
                } else {
                        $file_url_html .= isBlank(substr($file,5,strlen($file)-5)) . "</a> <a href=\"$info_url#undelete\"><SPAN CLASS=deleted TITLE=\"deleted\">deleted</span></a>";
                }

                if (check_perm($relDir.$file,$gblPermNote)) {
                        $note_html="<a href=\"$info_url#note\">".$gblIcon("note")."</a>".$fileNote[$key];
                } else {
                        $note_html=$fileNote[$key];
                }

                $ext = strtolower(strrchr($file,".")) ;

                if ($file_lock) {
                        if ($file_lock == $gblUserName) {
                                $b.="<A HREF=\"$self?A=Ci&D=".urlencode($relDir)."&F=".urlencode($file);
                                $b.="\" TITLE=\"Checkin (update) file on server\">" ;
                                $file_url_html=$b;
                                $b.=$gblIcon("checkin")."</A>" ;
                                $b.= $gblIcon("blank");
                                $file_url_html.="$file</a> $a";
                                $note_html = $gblIcon("blank")."<b>Please check-in (update) this file</b>";
                        } else {
                                $b = $gblIcon("locked");
                                $b.= $gblIcon("blank");
                                $note_html = $gblIcon("blank")."<b>File locked by $file_lock</b>";
                                $file_url_html = "$file $a";
                        }
                } else {
                        if (check_perm($relDir.$file,trperm_w)) {
                                $b.="<A HREF=\"$self?A=Co&D=".urlencode($relDir)."&F=".urlencode($file);
                                $b.="\" TITLE=\"Checkout file for edit\">" ;
                                $b.=$gblIcon("checkout")."</A>";
                        }

                        if ( $ext=="" || strstr(join(" ",$gblEditable),$ext) ) {  
                                $b.="<A HREF=\"$self?A=C&D=".urlencode($relDir)."&F=".urlencode($file);
                                $b.="\" TITLE=\"List contents\">" ;
                                $b.=$gblIcon("view")."</A>" ;
                        } else {
                                $b.= $gblIcon("blank");
                        }
                }

                $mod = date("$gblDateFmt $gblTimeFmt",$mod);

                include("$html/Navigate-fileEntry.html");

          }  // iterate over files
        } else {  // end if no files
                include("$html/Navigate-noFiles.html");
        }

        if ($emptyDir && $relDir != "") {
                include("$html/Navigate-emptyDir.html");
        } // end if emptyDir

        include("$html/Navigate-hr.html");      

        if (file_exists("$fsRealmDir/$realm".$realm_sep."info.inc")) {
                print "<TR><TD></TD><TD COLSPAN=5>";
                include("$fsRealmDir/$realm".$realm_sep."info.inc");
                print "</TD></TR>";
                include("$html/Navigate-hr.html");      
        } elseif (file_exists("$gblRepositoryDir/.info.inc")) {
                print "<TR><TD></TD><TD COLSPAN=5>";
                include("$gblRepositoryDir/.info.inc");
                print "</TD></TR>";
                include("$html/Navigate-hr.html");      
        }

        include("$html/Navigate-createNew.html");

        print "</TABLE>";

        EndHTML() ;
} // end function Navigate

//////////////////////////////////////////////////////////////////

function UploadPage($fsRoot, $relDir, $filename="") {

        global $html, $HTTP_SERVER_VARS;

        $self = $HTTP_SERVER_VARS["PHP_SELF"] ;
        include("$html/UploadPage.html");

} // end function UploadPage

//////////////////////////////////////////////////////////////////

// Error with sysadmin flag are reported to error_log or hidden from
// users

function Error($title,$text="",$sysadmin=0,$no_404=0) {
        global $gblSeparateAdminMessages,
                $gblMailAdminMessages,$realm,
                $HTTP_SERVER_VARS;
        if (! headers_sent() && ! $no_404) header("HTTP/1.0 404 Not Found");
        if ($sysadmin) {
                if ($gblSeparateAdminMessages) {
                        $user="Your administrator ";
                        if ($gblMailAdminMessages) {
                                mail($HTTP_SERVER_VARS["SERVER_ADMIN"], "docman $realm error message: $title", strip_tags($text));
                                $user.="<tt>".$HTTP_SERVER_VARS["SERVER_ADMIN"]."</tt> ";
                        }
                        $user.="has been notified about error" ;
                        StartHTML("($title)",$user);
                        echo "<P ALIGN=center>Hit your Browser's Back Button.</P>" ;
                        EndHTML();
                        error_log("docman $realm: ".strip_tags($text));
                } else {
                        StartHTML("ADMIN: ".$title,$text) ;
                        echo "<P ALIGN=center>Hit your Browser's Back Button.</P>" ;
                        EndHTML();
                }
        } else { 
                StartHTML("(".$title.")",$text) ;
                echo "<P ALIGN=center>Hit your Browser's Back Button.</P>" ;
                EndHTML() ;
        }
        exit ;
} // end function Error

function LogIt($target,$msg, $changelog=0) {

        global $gblDateFmt, $gblTimeFmt, $gblUserName, $gblFsRoot;

        $dir=dirname($target);
        if (! file_exists($dir."/.log")) {
                if (! @mkdir($dir."/.log",0700)) Error("docman installation problem","can't create log directory <tt>$dir/.log</tt>",1);
        }
        $file=basename($target);

        $log=fopen("$dir/.log/$file","a+");
        fputs($log,date("$gblDateFmt\t$gblTimeFmt").
                "\t$gblUserName\t$msg\n");
        fclose($log);

        if (! $changelog) return;

        $log=fopen("$gblFsRoot/.changelog","a+");
        if (substr($target,0,strlen($gblFsRoot)) == $gblFsRoot)
                $target=substr($target,strlen($gblFsRoot),strlen($target)-strlen($gblFsRoot));
        $msg=str_replace("\t"," ",$msg);
        fputs($log,time()."\t$target\t$gblUserName\t$msg\n");
        fclose($log);

        // FIX: implement e-mail notification based on $changelog
        // permission
}


//////////////////////////////////////////////////////////////////

function WriteNote($target,$msg) {

        $target=stripSlashes($target);
        $dir=dirname($target);
        if (! file_exists($dir."/.note")) {
                mkdir($dir."/.note",0700);
        }
        $file=basename($target);

        $note=fopen("$dir/.note/$file","w");
        if (! $note) {
                Error("Error writing note","Can't open note file <tt>$dir/.note/$file</tt> for writing",1);
        }
        fputs($note,"$msg\n");
        fclose($note);

        LogIt($target,"added note $msg");

}

function ReadNote($target) {

        $target=stripSlashes($target);
        $dir=dirname($target);
        $file=basename($target);
        $msg="";
        if (file_exists($dir."/.note/$file")) {
                $note=fopen("$dir/.note/$file","r");
                $msg=fgets($note,4096);
                fclose($note);
        }
        return HtmlSpecialChars(StripSlashes($msg));

}

//////////////////////////////////////////////////////////////////

function MoveTo($source,$folder) {

        $source=stripSlashes($source);
        $file=basename($source);
        if (! file_exists($folder)) {
                mkdir($folder,0700);
        }
        if (file_exists($source)) {
                rename($source,"$folder/$file");
        }
}

//////////////////////////////////////////////////////////////////

function Lock($target) {

        global $gblUserName;

        $target=stripSlashes($target);
        $dir=dirname($target);
        if (! file_exists($dir."/.lock")) {
                mkdir($dir."/.lock",0700);
        }
        $file=basename($target);

        if (file_exists("$dir/.lock/$file")) {
                LogIt($target,"attempt to locked allready locked file!");
        } else {
                $lock=fopen("$dir/.lock/$file","w");
                fputs($lock,"$gblUserName\n");
                fclose($lock);

                LogIt($target,"file locked");
        }

}

function CheckLock($target) {

        $target=stripSlashes($target);
        $dir=dirname($target);
        $file=basename($target);
        $msg=0;
        if (file_exists($dir."/.lock/$file")) {
                $lock=fopen("$dir/.lock/$file","r");
                $msg=fgets($lock,4096);
                fclose($lock);
        }
        return chop($msg);

}

function Unlock($target) {

        $target=stripSlashes($target);
        $dir=dirname($target);
        $file=basename($target);
        if (file_exists($dir."/.lock/$file")) {
                unlink("$dir/.lock/$file");
                LogIt($target,"file unlocked");
        } else {
                LogIt($target,"attempt to unlocked non-locked file!");
        }

}

//////////////////////////////////////////////////////////////////

function urlpath($url) {
        $url=urlencode(StripSlashes("$url"));
        $url=str_replace("%2F","/",$url);
        $url=str_replace("+","%20",$url);
        return($url);
}

//////////////////////////////////////////////////////////////////

function safe_rename($fromdir,$fromfile,$tofile) {

        global $gblNumBackups;

        function try_rename($from,$to) {
#               print "$from -> $to\n";
                if (file_exists($from) && is_writeable(dirname($to))) {
                        return rename($from,$to);
                } else {
                        return 0;
                }
        }

        function try_dir($todir) {
                if (! file_exists($todir)) {
                        @mkdir($todir,0700);
                }
        }

        $to="$fromdir/$tofile";
        $todir=dirname($to);
        $tofile=basename($to);

#       print "<pre>$fromdir / $fromfile -> $todir / $tofile\n\n";

        if (! try_rename("$fromdir/$fromfile","$todir/$tofile")) Error("Rename error","Can't rename file <tt>$fromfile</tt> to <tt>$tofile</tt>",1);
        try_dir("$todir/.log");
        try_rename("$fromdir/.log/$fromfile","$todir/.log/$tofile");
        try_dir("$todir/.note");
        try_rename("$fromdir/.note/$fromfile","$todir/.note/$tofile");
        try_dir("$todir/.lock");
        try_rename("$fromdir/.lock/$fromfile","$todir/.lock/$tofile");
        try_dir("$todir/.bak");
        for($i=0;$i<=$gblNumBackups;$i++) {
                try_rename("$fromdir/.bak/$i/$fromfile","$todir/.bak/$i/$tofile");
        }
}


//////////////////////////////////////////////////////////////////

// recursivly delete directory

function rrmdir($dir) {
        $handle=opendir($dir);
        while ($file = readdir($handle)) {
                if ($file != "." && $file != "..") {
                        if (is_dir("$dir/$file"))
                                rrmdir("$dir/$file");
                        else
                                if (! @unlink("$dir/$file")) return(0);
                }
        }
        closedir($handle);
        return @rmdir($dir);
}

//////////////////////////////////////////////////////////////////

function DisplayChangeLog($day) {

        global $gblFsRoot, $gblDateFmt, $gblTimeFmt,
                $HTTP_SERVER_VARS;

        $self  = $HTTP_SERVER_VARS["PHP_SELF"];

        if (!file_exists("$gblFsRoot/.changelog")) return;
        $log=fopen("$gblFsRoot/.changelog","r");
        $logarr = array();
        while($line = fgetcsv($log,512,"\t")) {
                while (sizeof($line) > 4) {
                        $tmp = array_pop($line);
                        $line.=" $tmp";
                }
                if ($day!=1 || ($day==1 && (time()-$line[0] < 24*60*60))) {
                        array_unshift($logarr,array($line[0],$line[1],$line[2],$line[3]));
                }
        }
        fclose($log);
        $cl1=" class=LST"; $cl2="";
        print "<table border=0 width=100%>\n";
        while ($e = array_shift($logarr)) {
                $cl=$cl1; $cl1=$cl2; $cl2=$cl;
                $date = date($gblDateFmt, $e[0]);
                $time = date($gblTimeFmt, $e[0]);
                $dir = dirname($e[1]);
                $file = basename($e[1]);
                print "<tr><td$cl>$date</td><td$cl>$time</td><td$cl><a href=\"$HTTP_SERVER_VARS[PHP_SELF]?D=".urlencode($dir)."\">$dir</a>/$file</td><td$cl>$e[2]</td><td$cl>$e[3]</td></tr>\n";
        }
        print "</table>";
        print "<p>".GifIcon("up")." Back to <a href=\"$self\">front page</a>.</p>";
}

//////////////////////////////////////////////////////////////////

function Download($path,$force=0) {
        global $HTTP_SERVER_VARS,$mime_type;

        // default transfer-encoding
        $encoding = "binary";

        // known transfer encodings
        $encoding_ext = array(
                "gz" => "x-gzip",
                "Z" => "x-compress",
        );

        $file = basename($path);
        $size = filesize($path);

        $ext_arr = explode(".",$file);
        $ext = array_pop($ext_arr);
        if (isset($encoding_ext[$ext])) {
                $encoding = $encoding_ext[$ext];
                $ext = array_pop($ext_arr);
        }

        if ($force || !isset($mime_type[$ext])) {
                header("Content-Type: application/force-download");
        } else {
                header("Content-Type: $mime_type[$ext]");
        }

        // IE5.5 just downloads index.php if we don't do this
        if(preg_match("/MSIE 5.5/", $HTTP_SERVER_VARS["HTTP_USER_AGENT"])) {
                header("Content-Disposition: filename=$file");
        } else {
                header("Content-Disposition: attachment; filename=$file");
        }

        header("Content-Transfer-Encoding: $encoding");
        $fh = fopen($path, "r");
        fpassthru($fh);
}


//////////////////////////////////////////////////////////////////

function chopsl($path) {
        $path=str_replace("//","/",$path);
        if (substr($path,strlen($path)-1,1) == "/") $path=substr($path,0,strlen($path)-1);
        return $path;
}

//////////////////////////////////////////////////////////////////
/*
        Document manager ACL implementation

        Written by Dobrica Pavlinusic <dpavlin@rot13.org>

        Based on ideas from Linux trustees code
        by Vyacheslav Zavadsky <zavadsky@braysystems.com>
*/

define('trmask_not',1 << 0);
define('trmask_clear',1 << 1);
define('trmask_deny',1 << 2);
define('trmask_one_level',1 << 3);
define('trmask_group',1 << 4);

define('trperm_r',1 << 5);
define('trperm_w',1 << 6);
define('trperm_b',1 << 7);
define('trperm_n',1 << 8);

$trustee_a2n = array(
        '!' => trmask_not,
        'C' => trmask_clear,
        'D' => trmask_deny,
        'O' => trmask_one_level,
        '+' => trmask_group,
        'R' => trperm_r,
        'W' => trperm_w,
        'B' => trperm_b,
        'N' => trperm_n,
);

// debugging function
function display_trustee($t) {
        global $trustee_a2n;
        $out="";
        foreach ($trustee_a2n as $c=>$v) {
                if ($t & $v) $out.=$c;
        }
        return $out;
}
function display_all_trustee() {
        global $trustees;
        print "trustee dump:<br>\n";
        foreach ($trustees as $path => $tr) {
                print "<br><tt>$path</tt>\n";
                foreach ($tr as $user=>$perm) {
                        print "$user == $perm (".display_trustee($perm).")<br>\n";
                }
        }
}

function init_trustee() {

global $trustee_conf,$trustee_php,$trustee_a2n,$groups,$trustees;

// do we need to re-create compiled trustees?
if (! file_exists($trustee_conf)) {
        # $error="$trustee_conf doesn't exits";
        return 0;       # don't use trustees
} elseif (file_exists($trustee_conf) && !is_readable($trustee_conf)) {
        $error="<tt>$trustee_conf</tt> exits, but is not readable";
} elseif (!is_writable(dirname($trustee_php))) {
        $error="<tt>".dirname($trustee_php)."</tt> must be writable by web server user";
} elseif (file_exists($trustee_php) && !is_writable($trustee_php)) {
        $error="trustees cache file <tt>$trustee_php</tt> exists, but is not writable by web server";
} elseif (@filemtime($trustee_conf) >= @filemtime($trustee_php)) {
        $fp_php=@fopen($trustee_php,"w");
        fputs($fp_php,"<?php // don't edit by hand!\n");

        $fp_conf=fopen($trustee_conf,"r");

        $groups_arr = array();
        $perm_arr = array();

        $tr_arr = array();

        while (! feof($fp_conf)) {
                $l = trim(fgets($fp_conf,4096));
                if (substr($l,0,1) == "+") {    // no comment
                        $arr=explode(":",$l);
                        $groups_arr[$arr[0]] = str_replace(" ","",$arr[1]) ;
                } elseif (substr($l,0,1) != "#") {
                        $arr=explode(":",$l);
                        $path=array_shift($arr);
                        if ($path == "") continue;
                        $sep2="";
                        while ($user=array_shift($arr)) {
                                $perm=0;
                                if (substr($user,0,1) == "+") {
                                        $perm|=trmask_group;
                                        $user=substr($user,1,strlen($user)-1);
                                }
                                $perm_ascii=array_shift($arr);
                                for ($i=0;$i<strlen($perm_ascii);$i++) {
                                        $ch=strtoupper($perm_ascii[$i]);
                                        if (isset($trustee_a2n[$ch])) {
                                                $perm|=$trustee_a2n[$ch];
                                        } else {
                                                $error.="trustee error in line '$l' [Unknown modifier '$ch']<br>\n";
                                        }
                                }
                                if (isset($tr_arr[$path][$user])) {
                                        $tr_arr[$path][$user] |= $perm;
                                } else {
                                        $tr_arr[$path][$user] = $perm;
                                }
                        }
                }
        }

        fclose($fp_conf);

        // save trustees
        $tr_out='$trustees = array (';
        $sep1="";
        while (list ($path, $tr) = each ($tr_arr)) {
                $tr_out.="$sep1\n\t'$path'=>array(";
                $sep2="";
                while (list($user,$perm)=each($tr)) {
                        $tr_out.="$sep2\n\t\t'$user'=>$perm";
                        $sep2=",";
                }
                $tr_out.="\n\t)";
                $sep1=",";
        }
        $tr_out.="\n);";

        // save groups
        $gr_out='$groups = array (';
        $sep="";
        while (list ($group, $members) = each ($groups_arr)) {
                $gr_out.="$sep\n\t'";
                $gr_out.=substr($group,1,strlen($group)-1);
                $gr_out.="'=>array('".join("','",explode(",",$members))."')";
                $sep=",";
        }
        $gr_out.="\n);\n";

        fputs($fp_php,$gr_out);
        fputs($fp_php,$tr_out);
        fputs($fp_php,"?>\n");
        fclose($fp_php);
}

if (isset($error)) {
        Error("Trustee error",$error,1);
} else {
        include_once("$trustee_php");
}

return 1;

}//init_trustee

function in_group($user,$group) {
        global $groups;
        return in_array($user,$groups[$group]);
}

// helper function
function unroll_perm($u,$t,$perm,$one_level) {

        if ($t & trmask_one_level && !$one_level) return $perm;

        if ($t & trmask_deny) {
                if ($t & trmask_clear) {
                        $perm['deny'] &= ~$t;
                } else {
                        $perm['deny'] |= $t;
                }
        } elseif ($t & trmask_clear) {
                $perm['allow'] &= ~$t;
        } else {
                $perm['allow'] |= $t;
        }
        return $perm;
}// end of helper function

function check_trustee($user,$path) {
        global $trustees,$HAVE_TRUSTEE;
        $perm['allow'] = 0;
        $perm['deny'] = 0;

        // do we use trustees?
        if (! $HAVE_TRUSTEE) return $perm;

        if (! isset($trustees)) Error("Trustees not found","Can't find in-memory trustee structure <tt>\$trustees</tt>. Probably bug in code. Contact <tt>dpavlin@rot13.org</tt>",1);

global $debug;
$debug .= "<br>check_trustee $path ... ";

        $path_arr=explode("/",$path);
        $tmppath = "/";
        while (count($path_arr)) {
                $tmppath.=array_shift($path_arr);
$debug.= ">> $tmppath ";

                if (! isset($trustees[$tmppath])) continue;
                $tr = $trustees[$tmppath];

                $one_level = (!count($path_arr));
$debug.=" O($one_level) ";

                if (isset($tr)) {
                        // first apply trustee for all
                        if (isset($tr['*']) && $user!="anonymous") {
                                $perm = unroll_perm($user,$tr['*'],$perm, $one_level);
                                unset($tr['*']);
                        }
                        // then apply not and group policies
                        foreach ($tr as $g=>$t) {
                                if ($t & trmask_not && $g != $user) {
                                        $t = $t & ~trmask_not;
                                        $perm = unroll_perm($user,$t,$perm, $one_level);
                                        unset($tr[$g]);

                                } elseif ($t & trmask_group && in_group($user,$g)) {
                                        // resolv user
                                        $t = $t & ~trmask_group;
                                        $perm = unroll_perm($user,$t,$perm, $one_level);
                                        unset($tr[$g]);
                                }
                        }
                        // then apply user policy
                        if (isset($tr[$user])) {
                                $perm = unroll_perm($user,$tr[$user],$perm,$one_level);
                                unset($tr[$user]);
                        }
                }
$debug.="d(".display_trustee($perm['deny']).") a(".display_trustee($perm['allow']).") ";

        }
$debug.="<br>check_trustee: user: $user path: $path==$tmppath perm: ";
$debug.="d: ".$perm['deny']." (".display_trustee($perm['deny']).") a: ".$perm['allow']." (".display_trustee($perm['allow']).")<Br>\n";
        return $perm;
}

// handy functions

function check_perm($path,$trperm) {
        global $gblLogin,$HAVE_TRUSTEE;

        $path = str_replace("//","/",$path);

        global $debug;
$debug.="<br>check_perm: on <tt>$path</tt> for perm ".display_trustee($trperm)."<br>\n";

        $return = ! $HAVE_TRUSTEE;
        if ($HAVE_TRUSTEE) {
                $perm = check_trustee($gblLogin,$path);
$debug.=" d: ".$perm['deny']." (".display_trustee($perm['deny']).") a: ".$perm['allow']." (".display_trustee($perm['allow']).") perm to have: $trperm (".display_trustee($trperm).")";
                if ($perm['deny'] & $trperm) $return=0;
                elseif (($perm['allow'] & $trperm) == $trperm) $return=1;
        }
$debug.=" return: $return<br>\n";
        return($return);
}

//////////////////////////////////////////////////////////////////

function readMime() {
        global $mime_type;

        if (! isset($gblMimeTypes)) {
                $gblMimeTypes = "/etc/mime.types";
        }

        $mime = @fopen($gblMimeTypes,"r");

        if (! $mime) Error("Can't read MIME types","<tt>$gblMimeTypes</tt> file not found. You can setup other <tt>mime.types</tt> file using <tt>\$gblMimeTypes</tt> in <tt>$realm_config</tt>");

        while($line = fgets($mime,80)) {
                if (substr($line,0,1) == "#") continue; // skip comment
                $arr = preg_split("/[\s\t]+/",$line);
                $type = array_shift($arr);
                while ($ext = array_shift($arr)) {
                        $mime_type[$ext] = $type;
                }
        }

        fclose($mime);
}

//////////////////////////////////////////////////////////////////

// check for invalid characters in filename and dirname (.. and /)

function check_dirname($file) {
        if (strstr($file,"..")) Error("Security violation","No parent dir <tt>..</tt> allowed in directory name <tt>$file</tt>",1);
}

function check_filename($file) {
        if (strstr($file,"..")) Error("Security violation","No parent dir <tt>..</tt> allowed in file name <tt>$file</tt>",1);
        // remove deleted directory (for undelete to work)
        $file = str_replace(".del/","",$file);
        if (strstr($file,"/")) Error("Security violation","No slashes <tt>/</tt> allowed in file name <tt>$file</tt>",1);
}

// bla/blo/../foo will return bla/foo
function remove_parent($path) {
        while (preg_match(",/[^/]+/\.\./,",$path)) {
                $path = preg_replace(",/[^/]+/\.\./,","",$path);
        }
        if (substr($path,0,1) != "/") $path = "/".$path;
        return $path;
}

//////////////////////////////////////////////////////////////////

// functions to move HTTP server variables to global namespace
// [replacement for register_globals in php.ini]

function HTTP_GET_VAR($var) {
        global $HTTP_GET_VARS, ${$var};
        if (isset($HTTP_GET_VARS[$var])) {
                $$var = stripSlashes($HTTP_GET_VARS[$var]);
                return $$var;
        }
}

function HTTP_POST_VAR($var) {
        global $HTTP_POST_VARS, ${$var};
        if (isset($HTTP_POST_VARS[$var])) {
                $$var = $HTTP_POST_VARS[$var];
                return $$var;
        }
}

function HTTP_SERVER_VAR($var) {
        global $HTTP_SERVER_VARS, ${$var};
        if (isset($HTTP_SERVER_VARS[$var])) {
                $$var = $HTTP_SERVER_VARS[$var];
                return $$var;
        }
}

//////////////////////////////////////////////////////////////////

function Warn($text) {
}

//////////////////////////////////////////////////////////////////

function isBlank($file,$what = "filename") {
        if (trim($file) == "") return "<i>whitespace $what</i>";
        if ($file == "") return "<i>no $what</i>";
        return $file;
}

//////////////////////////////////////////////////////////////////
// MAIN PROGRAM

        $gblFilePerms = 0640 ;         // default for new files
        $gblDirPerms  = 0750 ;          // default for new dirs

        if (isset($HTTP_GET_VARS["STYLE"]) && $HTTP_GET_VARS["STYLE"] == "get") {
                include("$html/docman.css");
                exit;
        }

        // location of master docman configuration file
        $docman_conf = "/etc/docman.conf";
        if (! file_exists($docman_conf)) {
                $error = "Can't find master configuration file <tt>$docman_conf</tt>. See <tt>docman2/doc/upgrade.html#docman_conf</tt> for more informations";
                
                error_log("docman: $error");
                Error("docman not installed completly",$error);
        }
        include($docman_conf);

        if (! isset($fsRealmDir)) {
                $fsRealmDir = "$gblIncDir/realm";
        }

        // try to add dir to script name to realm var
        if (is_dir("$fsRealmDir/$realm/".dirname($HTTP_SERVER_VARS["SCRIPT_NAME"]))) {
                $realm .= dirname($HTTP_SERVER_VARS["SCRIPT_NAME"]);
                $realm_sep = "/";
        } else {
                $realm_sep = ".";
        }

        $realm_config = $fsRealmDir."/".$realm.$realm_sep."conf";

        // read user-defined configuration
        if (file_exists($realm_config)) {
                include($realm_config);
        } else {
                Error("Configuration error","Can't find configuration file at <tt>$realm_config</tt> !");
        }

        if (! isset($gblRepositoryDir)) Error("Configuration error","<tt>\$gblRepositoryDir</tt> is not setuped in realm configuration file <tt>$realm_config</tt>");

        // where do we get users from?
        if (file_exists("$gblIncDir/htusers/$gblUsers.php")) {
                include("$gblIncDir/htusers/$gblUsers.php");
        } else {
                Error("Configuration error","Can't find user handling module at <tt>$gblIncDir/htusers/$gblUsers.php</tt> ! Please fix <tt>$realm_config</tt>");
        }

        // take additional login vars
        HTTP_GET_VAR("relogin");
        HTTP_GET_VAR("force_login");

        // if no password, or empty password logout
        if (
                isset($gblLogin) && (
                        !isset($relogin) || (
                                isset($relogin) && $relogin != md5($gblLogin.$gblPasswd)
                        )
                ) && (
                        $gblPasswd == "" || !isset($gblPasswd)
                ) && !isset($force_login) && $gblLogin != "anonymous"
           ) {
                StartHTML("Logout completed","Your login credentials has been erased") ;
                EndHTML() ;
                exit ;
        }

        if (!is_dir($gblRepositoryDir)) Error("Repository dir not found","Can't find repository directory <tt>$gblRepositoryDir</tt>. Please fix that in <tt>$realm_config</tt> variable <tt>\$gblRepositoryDir</tt>.",1);

        // trustee (ACL) file configuration
        $trustee_conf="$fsRealmDir/$realm".$realm_sep."trustee";
        // compiled version of trustee file
        $trustee_php="$gblRepositoryDir/.trustee.php";
        // get ACL informations
        $HAVE_TRUSTEE = init_trustee();

        if (strtolower($gblLogin) == "anonymous" || !isset($gblLogin)) {
                $perm = check_trustee("anonymous","/");
                // browsing must be explicitly allowed for root directory
                // of repository for anonymous user to work!
                if ($perm['allow'] & trperm_b) {
                        $gblLogin = $gblPasswd = "anonymous";
                        $secHash = md5($gblLogin.$gblPasswd);
                        $gblUserName = "Anonymous user";
                }
        }

        // authentication failure
        if ( md5($gblLogin.$gblPasswd) != $secHash ||
                isset($relogin) && $secHash == $relogin) {
                header("WWW-authenticate: basic realm=\"$realm\"") ;
                header("HTTP/1.0 401 Unauthorized") ;
                Error("401 Unauthorized","No trespassing !",0,1);
        }


        // read mime.types
        readMime();

        if (! isset($gblPermNote)) {
                $gblPermNote = trperm_r;
        }

        HTTP_POST_VAR("FN");

        if ($HTTP_SERVER_VARS["REQUEST_METHOD"] == "POST") {
                // take variables from server
                if (HTTP_POST_VAR("FN"))
                        check_filename($FN);
                if (HTTP_POST_VAR("DIR")) {
                        check_dirname($DIR);
                        $relDir = $DIR;
                } else {
                        trigger_error("Can't get DIR",E_USER_WARNING);
                        $relDir = "/";
                }
                if (HTTP_POST_VAR("RELPATH")) check_dirname($RELPATH);
                HTTP_POST_VAR("T");
                HTTP_POST_VAR("CONFIRM");
        } else {
                // get
                HTTP_GET_VAR("A");
                if (HTTP_GET_VAR("D")) {
                        check_dirname($D);
                        $D=urldecode($D);
                        $relDir = $D;
                } else {
                        //trigger_error("Can't get D",E_USER_WARNING);
                        $relDir = "/";
                }
                if (HTTP_GET_VAR("F")) check_filename($F);
        }

        $relScriptDir = dirname($HTTP_SERVER_VARS["SCRIPT_NAME"]) ;     
        // i.e. /docman

        // start on server root
        $gblFsRoot = $gblRepositoryDir;
        // i.e. /home/httpd/repository

        $fsDir = $gblFsRoot . $relDir ; // current directory
        if ( !is_dir($fsDir) ) Error("Dir not found","Can't find <tt>$relDir</tt> which points to <tt>$fsDir</tt>",1) ;

        if ($relDir == "") $relDir="/";

        if (isset($HTTP_SERVER_VARS["HTTPS"]) && $HTTP_SERVER_VARS["HTTPS"] == "on") {
                $webRoot  = "https://";
        } else {
                $webRoot  = "http://";
        }
        $webRoot .= $HTTP_SERVER_VARS["HTTP_HOST"] . $relScriptDir;

        if (HTTP_POST_VAR("POSTACTION")) switch ($POSTACTION) {
        case "UPLOAD" :
                $FN_name=stripSlashes($HTTP_POST_FILES["FN"]["tmp_name"]);
                $FN=stripSlashes($HTTP_POST_FILES["FN"]["name"]);
                if (!is_writeable($fsDir)) Error("Write denied",$relDir) ;

                $source = $FN_name ;
                if (! file_exists($source)) {
                        Error("You must select file with browse to upload it!","If file is too big, you might need to modify php configuration options <tt>post_max_size</tt> and <tt>upload_max_filesize</tt>",1);
                }

                if (HTTP_POST_VAR("FILENAME")) check_filename($FILENAME);

                if (! isset($FILENAME)) {       // from update file
                        $target = "$fsDir/".basename($FN);
                } else {
                        $target = "$fsDir/$FILENAME";
                }

                if (! check_perm("$relDir/".basename($target), trperm_w))
                        Error("Access denied","User <tt>$gblLogin</tt> tried to upload <tt>$relDir/".basename($target)."</tt> without valid trustee.",1);

                // backup old files first
                $dir=dirname($target);
                if (! file_exists($dir."/.bak")) {
                        mkdir($dir."/.bak",0700);
                }
                if (! file_exists($dir."/.bak/$gblNumBackups")) {
                        mkdir($dir."/.bak/$gblNumBackups",0700);
                }
                $file=basename($target);
                for($i=$gblNumBackups-1;$i>0;$i--) {
                        MoveTo("$dir/.bak/$i/$file","$dir/.bak/".($i+1)."/");
                }
                MoveTo($target,$dir."/.bak/1/");

                copy($source,$target) ;
                chmod($target,$gblFilePerms) ;
                clearstatcache() ;
                if (isset($FILENAME)) {
                        LogIt($target,"check-in",trperm_r | trperm_w);
                        Unlock($target);
                } else {
                        LogIt($target,"uploaded",trperm_r | trperm_w);
                }
                break ;

        case "SAVE" :
                $path = $gblFsRoot . $RELPATH ;
                $path=stripSlashes($path);

                if (! check_perm("$RELPATH", trperm_w))
                        Error("Access denied","User <tt>$gblLogin</tt> tried to save <tt>$RELPATH</tt> without valid trustee.",1);

                $writable = is_writeable($path) ;
                $legaldir = is_writeable(dirname($path)) ;
                $exists   = (file_exists($path)) ? 1 : 0 ; 
                // FIX: more verbose error message
                if (!($writable || (!$exists && $legaldir))) 
                        Error("Write denied",$RELPATH) ;
                $fh = fopen($path, "w") ;
                HTTP_POST_VAR("FILEDATA");
                fwrite($fh,$FILEDATA) ;
                fclose($fh) ;
                clearstatcache() ;
                LogIt($path,"saved changes",trperm_r);
                break ;

        case "CREATE" :
                // we know $fsDir exists
                if (! check_perm($relDir, trperm_w))
                        Error("Write access denied","You don't have permission to write in <tt>$relDir</tt>");
                if ($T == "D") $type = "directory";
                else $type ="file";
                if ($FN == "") Error("Can't create $type","You must enter name of $type to create it.");
                if (!is_writeable($fsDir)) Error("Write denied","User <tt>$gblLogin</tt> has trustee to write in <tt>$relDir</tt> but permissions on <tt>$fsDir</tt> are wrong!", 1) ;
                $path = "$fsDir/$FN";           // file or dir to create
                $relPath = "$relDir/$FN";

                if (file_exists($path))
                        Error("Can't create $type","Object <tt>$relPath</tt> allready exists");

                switch ( $T ) {
                case "D" :  // create a directory
                        if ( ! @mkdir($path,$gblDirPerms) ) 
                                Error("Mkdir failed",$relPath) ; // eg. if it exists
                        else
                                LogIt($path."/","dir created",trperm_w);
                        clearstatcache() ;
                        break ;
                case "F" :  // create a new file
// this functionality is doubled in DetailView().
// better keep it here altogether
// chmod perms to $gblFilePerms
                        if ( file_exists($path) && !is_writeable($path) ) 
                                Error("File not writable", "User <tt>$gblLogin</tt> has trustee to write in <tt>$relPath</tt> but permissions on <tt>$path</tt> are wrong!", 1) ;
                        $fh = fopen($path, "w+") ;
                        if ($fh) {
                                fputs($fh,"\n");
                                fclose($fh) ;
                                LogIt($path,"file created",trperm_r | trperm_w);
                        } else {
                                Error("Creation of file $relPath failed", "User <tt>$gblLogin</tt> has trustee to write in <tt>$relPath</tt> but creation of <tt>$path</tt> failed!", 1) ;
                        }
                        $tstr = $HTTP_SERVER_VARS["PHP_SELF"]."?A=E&D=".urlencode($relDir)."&F=".urlencode($FN) ;
                        header("Location: " . $tstr) ;
                        exit ;
                }
                break ;

        case "DELETE" :  
                if ( $CONFIRM != "on" ) break;

                if ( isset($FN) && $FN != "") {
                        $path=$fsDir."/".$FN;
                        $what = "file";
                } elseif (isset($DIR)) {
                        $path=$gblFsRoot."/".$DIR;
                        $what = "directory";
                } else  {
                        Error("Can't delete object","Can't find filename <tt>\$FN</tt> or dirname in <tt>\$DIR</tt>",1);
                }

                if (! check_perm("$relDir/$FN", trperm_w))
                        Error("Access denied","User <tt>$gblLogin</tt> tried to erase $what <tt>$relDir/$FN</tt> without valid trustee.",1);

                $tstr  = "Attempt to delete non-existing object or insufficient privileges: " ;

                $dir=dirname($path);
                $file=basename($path);

                if (! file_exists("$dir/.del")) {
                        mkdir("$dir/.del",0700);
                }

                if ( ! @rename($path,"$dir/.del/$file") ) { 
                        LogIt($path,"$what delete failed");
                        Error("Can't delete $what",$tstr."<tt>".$relDir."/".$FN."</tt>") ; 
                } else {
                        LogIt($path,"$what deleted",trperm_w);
                        MoveTo("$dir/.log/$file","$dir/.del/.log/");
                        MoveTo("$dir/.note/$file","$dir/.del/.note/");
                        MoveTo("$dir/.lock/$file","$dir/.del/.lock/");
                }
                break ;

        case "UNDELETE" :  
                if ( $CONFIRM != "on" ) break ;

                if (substr($FN,0,4) != ".del") break ;
                $file=substr($FN,4,strlen($FN)-4);

                if (! check_perm("$relDir/$file", trperm_w))
                        Error("Access denied","User <tt>$gblLogin</tt> tried to undelete <tt>$relDir/$file</tt> without valid trustee.",1);

                LogIt("$fsDir/.del/$file","undeleted",trperm_w);
                MoveTo("$fsDir/.del/$file","$fsDir/");
                MoveTo("$fsDir/.del/.log/$file","$fsDir/.log/");
                MoveTo("$fsDir/.del/.note/$file","$fsDir/.note/");
                MoveTo("$fsDir/.del/.lock/$file","$fsDir/.lock/");

                break ;

        case "RENAME" :  
                if ( $CONFIRM != "on" ) break ;

                if (HTTP_POST_VAR("NEWNAME")) {
                        $dest = remove_parent($relDir.$NEWNAME);
                        if (! check_perm($relDir.$FN, trperm_w) ||
                            ! check_perm($dest, trperm_w) )
                                Error("Access denied","User <tt>$gblLogin</tt> tried to rename <tt>$relDir$FN</tt> to <tt>$dest</tt> without valid trustee.",1);
                } else {
                        Error("Rename error","Can't find new name in var <tt>\$NEWNAME</tt>",1);
                }
                LogIt("$fsDir/$FN","renamed $FN to $NEWNAME",trperm_r);
                safe_rename($fsDir,$FN,$NEWNAME);
                break ;

        case "NOTE" :
                if (! HTTP_POST_VAR("NOTE"))
                        Error("Can't add note to object","Can't find var <tt>\$NOTE</tt>",1);
                if (! check_perm("$relDir/$FN", trperm_w))
                        Error("Access denied","User <tt>$gblLogin</tt> tried to add note to <tt>$relDir/$FN</tt> without valid trustee.",1);

                WriteNote("$fsDir/$FN",$NOTE);
                break ;

        case "UNLOCK" :  
                if ( $CONFIRM != "on" ) break ;
                if (! check_perm("$relDir/$FN", trperm_w))
                        Error("Access denied","User <tt>$gblLogin</tt> tried to unlock <tt>$relDir/$FN</tt> without valid trustee.",1);
                Unlock("$fsDir/$FN");
                break ;

        default :
                // user hit "CANCEL" or undefined action
        }

        // common to all POSTs : redirect to directory view ($relDir)
        if (isset($POSTACTION)) { 
                $tstr = $HTTP_SERVER_VARS["PHP_SELF"]."?D=".urlencode($relDir);
                header("Location: ".$tstr) ;   
                exit ;
        }

        // check for mode.. navigate, code display, upload, or detail?
        // $A=U : upload to path given in $D
        // $A=E : display detail of file $D/$F and edit
        // $A=C : display code in file $D/$F
        // $A=Co : checkout file $D/$F
        // $A=Ci : checkin file $D/$F
        // $A=V : view file (do nothing except log)
        // $A=I : include file .$F.php from [$gblIncDir|realm]/include_php
        // default : display directory $D

        if (isset($A)) switch ($A) {
        case "U" :
                // upload to $relDir
                if (! check_perm($relDir, trperm_w))
                        Error("Write access denied","You don't have permission to write in <tt>$relDir</tt>");
                if (!is_writeable($gblFsRoot . $relDir)) 
                        Error("Write access denied","User <tt>$gblLogin</tt> has permission on <tt>$relDir</tt>, but directory is not writable",1);
                $text  = "Use this page to upload a single " ;
                $text .= "file to <B>$realm</B>." ;
                StartHTML("(Upload Page)", $text) ;
                UploadPage($gblFsRoot, $relDir) ;
                EndHTML() ;
                exit ;
        case "E" :
                // detail of $relDir/$F
                if (is_file("$gblFsRoot/$relDir/$F") || is_dir("$gblFsRoot/$relDir/$F")) DetailPage($gblFsRoot, $relDir, $F) ;
                exit ;
        case "C" :
                $F=stripSlashes($F);
                // listing of $relDir/$F 
                DisplayCode($gblFsRoot, $relDir, $F) ;
                exit ;
        case "Co" :
                // checkout
                Lock("$gblFsRoot/$relDir/$F");
                Download("$gblFsRoot/$relDir/$F",1);
                exit;
        case "Ci" :
                $F=stripSlashes($F);
                // upload && update to $relDir
                if (!is_writeable($gblFsRoot . $relDir)) 
                        Error("Write access denied",$relDir) ;
                $text  = "Use this page to update a single " ;
                $text .= "file to <B>$realm</B>." ;
                StartHTML("(Update file Page)", $text) ;
                UploadPage($gblFsRoot, $relDir, $F) ;
                EndHTML() ;
                exit ;
        case "V" :
                // view
                LogIt("$gblFsRoot/$relDir/$F","viewed");
                Download("$gblFsRoot/$relDir/$F",$gblForceDownload);
                exit;
        case "Ch" :
                StartHTML("(File changes)","All changes chronologicaly...");
                DisplayChangeLog(0);    // all
                EndHTML() ;
                exit;
        case "Ch1" :
                StartHTML("(File changes)","Changes to files in last day...");
                DisplayChangeLog(1);
                EndHTML() ;
                exit;
        case "I" :
                if (! isset($F) || $F == "")
                        Error("Can't find file to include","Your request didn't specify file to include which should be in variable <tt>F</tt> like <tt>$HTTP_SERVER_VARS[REQUEST_URI]<b>&F=include_php_file</b></tt>",1);
                $inc_file="$fsRealmDir/$realm".$realm_sep.$F.".php";
                if (! file_exists($inc_file)) {
                        Error("Can't find file to include","Can't find include file <tt>$F.php</tt> in <tt>$fsRealmDir/$realm/</tt>. Meybe you should copy <tt>$gblIncDir/include_php/$F.php</tt> to <tt>$inc_file<tt> ?",1);
                }
                if (!is_readable($inc_file))
                        Error("Read access to include file denied","Can't read PHP include file <tt>$inc_file</tt>. Fix permissions on it.",1);
                $text  = "Your include file should define \$text variable which holds this text and \$title variable which is page title";
                $title = "You should define \$title variable with page title";
                include($inc_file);
                StartHTML($title, $text) ;
                print "<p>".GifIcon(up)." Back to <a href=$HTTP_SERVER_VARS[PHP_SELF]>front page</a>.</p>";
                EndHTML() ;
                exit ;
        }

        // default: display directory $relDir
        Navigate($gblFsRoot,$relDir) ;  
        exit ;

        Error("Whooah!","By cartesian logic, this never happens",1) ;
?>