--- loncom/lonsql 2000/07/25 16:06:57 1.4
+++ loncom/lonsql 2001/10/17 02:15:59 1.37
@@ -1,6 +1,9 @@
#!/usr/bin/perl
# lonsql-based on the preforker:harsha jagasia:date:5/10/00
# 7/25 Gerd Kortemeyer
+# many different dates Scott Harrison
+# 03/22/2001 Scott Harrison
+# 8/30 Gerd Kortemeyer
use IO::Socket;
use Symbol;
@@ -12,6 +15,15 @@ use Fcntl;
use Tie::RefHash;
use DBI;
+my @metalist;
+# ----------------- Code to enable 'find' subroutine listing of the .meta files
+require "find.pl";
+sub wanted {
+ (($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_)) &&
+ -f _ &&
+ /^.*\.meta$/ && !/^.+\.\d+\.[^\.]+\.meta$/ &&
+ push(@metalist,"$dir/$_");
+}
$childmaxattempts=10;
$run =0;#running counter to generate the query-id
@@ -28,6 +40,20 @@ while ($configline=<CONFIG>) {
}
close(CONFIG);
+# ------------------------------------- Make sure that database can be accessed
+{
+ my $dbh;
+ unless (
+ $dbh = DBI->connect("DBI:mysql:loncapa","www",$perlvar{'lonSqlAccess'},{ RaiseError =>0,PrintError=>0})
+ ) {
+ print "Cannot connect to database!\n";
+ exit;
+ }
+ else {
+ $dbh->disconnect;
+ }
+}
+
# --------------------------------------------- Check if other instance running
my $pidfile="$perlvar{'lonDaemons'}/logs/lonsql.pid";
@@ -49,13 +75,14 @@ while ($configline=<CONFIG>) {
chomp($ip);
$hostip{$ip}=$id;
-
if ($id eq $perlvar{'lonHostID'}) { $thisserver=$name; }
$PREFORK++;
}
close(CONFIG);
+$PREFORK=int($PREFORK/4);
+
$unixsock = "mysqlsock";
my $localfile="$perlvar{'lonSockDir'}/$unixsock";
my $server;
@@ -180,12 +207,11 @@ sub make_new_child {
#open database handle
# making dbh global to avoid garbage collector
unless (
- $dbh = DBI->connect("DBI:mysql:loncapa","www","newmysql",{ RaiseError =>0,PrintError=>0})
+ $dbh = DBI->connect("DBI:mysql:loncapa","www",$perlvar{'lonSqlAccess'},{ RaiseError =>0,PrintError=>0})
) {
- my $st=120+int(rand(240));
+ sleep(10+int(rand(20)));
&logthis("<font color=blue>WARNING: Couldn't connect to database ($st secs): $@</font>");
print "database handle error\n";
- sleep($st);
exit;
};
@@ -201,8 +227,11 @@ sub make_new_child {
my $userinput = <$client>;
chomp($userinput);
- my ($conserver,$querytmp)=split(/&/,$userinput);
+ my ($conserver,$querytmp,
+ $customtmp,$customshowtmp)=split(/&/,$userinput);
my $query=unescape($querytmp);
+ my $custom=unescape($customtmp);
+ my $customshow=unescape($customshowtmp);
#send query id which is pid_unixdatetime_runningcounter
$queryid = $thisserver;
@@ -211,19 +240,90 @@ sub make_new_child {
$queryid .= $run;
print $client "$queryid\n";
+ &logthis("QUERY: $query");
+ &logthis("QUERY: $query");
+ sleep 1;
#prepare and execute the query
my $sth = $dbh->prepare($query);
my $result;
- unless ($sth->execute())
- {
- &logthis("<font color=blue>WARNING: Could not retrieve from database: $@</font>");
- $result="";
+ my @files;
+ my $subsetflag=0;
+ if ($query) {
+ unless ($sth->execute())
+ {
+ &logthis("<font color=blue>WARNING: Could not retrieve from database: $@</font>");
+ $result="";
+ }
+ else {
+ my $r1=$sth->fetchall_arrayref;
+ my @r2;
+ map {my $a=$_;
+ my @b=map {escape($_)} @$a;
+ push @files,@{$a}[3];
+ push @r2,join(",", @b)
+ } (@$r1);
+ $result=join("&",@r2);
+ }
}
- else {
- my $r1=$sth->fetchall_arrayref;
- my @r2; map {my $a=$_; my @b=map {escape($_)} @$a; push @r2,join(",", @b)} (@$r1);
- $result=join("&",@r2) . "\n";
+ # do custom metadata searching here and build into result
+ if ($custom or $customshow) {
+ &logthis("am going to do custom query for $custom");
+ if ($query) {
+ @metalist=map {$perlvar{'lonDocRoot'}.$_.'.meta'} @files;
+ }
+ else {
+ @metalist=(); pop @metalist;
+ opendir(RESOURCES,"$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}");
+ my @homeusers=grep
+ {&ishome("$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}/$_")}
+ grep {!/^\.\.?$/} readdir(RESOURCES);
+ closedir RESOURCES;
+ foreach my $user (@homeusers) {
+ &find("$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}/$user");
+ }
+ }
+# &logthis("FILELIST:" . join(":::",@metalist));
+ # if file is indicated in sql database and
+ # not part of sql-relevant query, do not pattern match.
+ # if file is not in sql database, output error.
+ # if file is indicated in sql database and is
+ # part of query result list, then do the pattern match.
+ my $customresult='';
+ my @r2;
+ foreach my $m (@metalist) {
+ my $fh=IO::File->new($m);
+ my @lines=<$fh>;
+ my $stuff=join('',@lines);
+ if ($stuff=~/$custom/s) {
+ foreach my $f ('abstract','author','copyright',
+ 'creationdate','keywords','language',
+ 'lastrevisiondate','mime','notes',
+ 'owner','subject','title') {
+ $stuff=~s/\n?\<$f[^\>]*\>.*?<\/$f[^\>]*\>\n?//s;
+ }
+ my $m2=$m; my $docroot=$perlvar{'lonDocRoot'};
+ $m2=~s/^$docroot//;
+ $m2=~s/\.meta$//;
+ unless ($query) {
+ my $q2="select * from metadata where url like binary '$m2'";
+ my $sth = $dbh->prepare($q2);
+ $sth->execute();
+ my $r1=$sth->fetchall_arrayref;
+ map {my $a=$_;
+ my @b=map {escape($_)} @$a;
+ push @files,@{$a}[3];
+ push @r2,join(",", @b)
+ } (@$r1);
+ }
+# &logthis("found: $stuff");
+ $customresult.='&custom='.escape($m2).','.escape($stuff);
+ }
+ }
+ $result=join("&",@r2) unless $query;
+ $result.=$customresult;
}
+ # reply with result
+ $result.="\n" if $result;
&reply("queryreply:$queryid:$result",$conserver);
}
@@ -274,6 +374,7 @@ sub reply {
}
} else {
$answer='self_reply';
+ $answer=subreply($cmd,$server);
}
return $answer;
}
@@ -293,3 +394,29 @@ sub unescape {
$str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
return $str;
}
+
+# --------------------------------------- Is this the home server of an author?
+# (copied from lond, modification of the return value)
+sub ishome {
+ my $author=shift;
+ $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
+ my ($udom,$uname)=split(/\//,$author);
+ my $proname=propath($udom,$uname);
+ if (-e $proname) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+# -------------------------------------------- Return path to profile directory
+# (copied from lond)
+sub propath {
+ my ($udom,$uname)=@_;
+ $udom=~s/\W//g;
+ $uname=~s/\W//g;
+ my $subdir=$uname.'__';
+ $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
+ my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
+ return $proname;
+}