version 1.40, 2001/11/29 14:59:52
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version 1.44, 2002/06/17 14:00:09
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# The LearningOnline Network |
# The LearningOnline Network |
# lonsql - LON TCP-MySQL-Server Daemon for handling database requests. |
# lonsql - LON TCP-MySQL-Server Daemon for handling database requests. |
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# |
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# $Id$ |
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# |
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# Copyright Michigan State University Board of Trustees |
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# |
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# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
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# |
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# LON-CAPA is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# LON-CAPA is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with LON-CAPA; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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# /home/httpd/html/adm/gpl.txt |
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# |
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# http://www.lon-capa.org/ |
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# |
# YEAR=2000 |
# YEAR=2000 |
# lonsql-based on the preforker:harsha jagasia:date:5/10/00 |
# lonsql-based on the preforker:harsha jagasia:date:5/10/00 |
# 7/25 Gerd Kortemeyer |
# 7/25 Gerd Kortemeyer |
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# many different dates Scott Harrison |
# many different dates Scott Harrison |
# 03/22/2001 Scott Harrison |
# 03/22/2001 Scott Harrison |
# 8/30 Gerd Kortemeyer |
# 8/30 Gerd Kortemeyer |
# 10/17,11/28,11/29 Scott Harrison |
# 10/17,11/28,11/29,12/20 Scott Harrison |
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# YEAR=2001 |
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# 5/11 Scott Harrison |
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# |
# $Id$ |
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### |
### |
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############################################################################### |
############################################################################### |
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## ORGANIZATION OF THIS PERL SCRIPT ## |
## ORGANIZATION OF THIS PERL SCRIPT ## |
## 1. Modules used ## |
## 1. Modules used ## |
## 2. Enable find subroutine ## |
## 2. Enable find subroutine ## |
## 3. Read httpd access.conf and get variables ## |
## 3. Read httpd config files and get variables ## |
## 4. Make sure that database can be accessed ## |
## 4. Make sure that database can be accessed ## |
## 5. Make sure this process is running from user=www ## |
## 5. Make sure this process is running from user=www ## |
## 6. Check if other instance is running ## |
## 6. Check if other instance is running ## |
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## ## |
## ## |
############################################################################### |
############################################################################### |
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use lib '/home/httpd/lib/perl/'; |
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use LONCAPA::Configuration; |
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use IO::Socket; |
use IO::Socket; |
use Symbol; |
use Symbol; |
use POSIX; |
use POSIX; |
Line 52 sub wanted {
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Line 80 sub wanted {
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$childmaxattempts=10; |
$childmaxattempts=10; |
$run =0;#running counter to generate the query-id |
$run =0;#running counter to generate the query-id |
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# ------------------------------------ Read httpd access.conf and get variables |
# -------------------------------- Read loncapa_apache.conf and loncapa.conf |
open (CONFIG,"/etc/httpd/conf/access.conf") || die "Can't read access.conf"; |
my $perlvarref=LONCAPA::Configuration::read_conf('loncapa_apache.conf', |
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'loncapa.conf'); |
while ($configline=<CONFIG>) { |
my %perlvar=%{$perlvarref}; |
if ($configline =~ /PerlSetVar/) { |
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my ($dummy,$varname,$varvalue)=split(/\s+/,$configline); |
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chomp($varvalue); |
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$perlvar{$varname}=$varvalue; |
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} |
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} |
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close(CONFIG); |
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# ------------------------------------- Make sure that database can be accessed |
# ------------------------------------- Make sure that database can be accessed |
{ |
{ |
Line 269 sub make_new_child {
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Line 290 sub make_new_child {
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print $client "$queryid\n"; |
print $client "$queryid\n"; |
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&logthis("QUERY: $query"); |
&logthis("QUERY: $query"); |
&logthis("QUERY: $query"); |
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sleep 1; |
sleep 1; |
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# ---------- At this point, query is received, query-ID assigned and sent back |
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# $query eq 'logquery' will mean that this is a query against log-files |
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unless ($query eq 'logquery') { |
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# -------------------------------------------------------- This is an sql query |
#prepare and execute the query |
#prepare and execute the query |
my $sth = $dbh->prepare($query); |
my $sth = $dbh->prepare($query); |
my $result; |
my $result; |
Line 285 sub make_new_child {
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Line 311 sub make_new_child {
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else { |
else { |
my $r1=$sth->fetchall_arrayref; |
my $r1=$sth->fetchall_arrayref; |
my @r2; |
my @r2; |
map {my $a=$_; |
foreach (@$r1) {my $a=$_; |
my @b=map {escape($_)} @$a; |
my @b=map {escape($_)} @$a; |
push @files,@{$a}[3]; |
push @files,@{$a}[3]; |
push @r2,join(",", @b) |
push @r2,join(",", @b) |
} (@$r1); |
} |
$result=join("&",@r2); |
$result=join("&",@r2); |
} |
} |
} |
} |
Line 337 sub make_new_child {
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Line 363 sub make_new_child {
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my $sth = $dbh->prepare($q2); |
my $sth = $dbh->prepare($q2); |
$sth->execute(); |
$sth->execute(); |
my $r1=$sth->fetchall_arrayref; |
my $r1=$sth->fetchall_arrayref; |
map {my $a=$_; |
foreach (@$r1) {my $a=$_; |
my @b=map {escape($_)} @$a; |
my @b=map {escape($_)} @$a; |
push @files,@{$a}[3]; |
push @files,@{$a}[3]; |
push @r2,join(",", @b) |
push @r2,join(",", @b) |
} (@$r1); |
} |
} |
} |
# &logthis("found: $stuff"); |
# &logthis("found: $stuff"); |
$customresult.='&custom='.escape($m2).','.escape($stuff); |
$customresult.='&custom='.escape($m2).','.escape($stuff); |
Line 350 sub make_new_child {
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Line 376 sub make_new_child {
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$result=join("&",@r2) unless $query; |
$result=join("&",@r2) unless $query; |
$result.=$customresult; |
$result.=$customresult; |
} |
} |
# reply with result |
# ------------------------------------------------------------ end of sql query |
$result.="\n" if $result; |
} else { |
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# ------------------------------------------------------ beginning of log query |
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# |
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# do log queries here |
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# |
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$result='not_yet_implemented'; |
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# ------------------------------------------------------------ end of log query |
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} |
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# reply with result, append \n unless already there |
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$result.="\n" unless ($result=~/\n$/); |
&reply("queryreply:$queryid:$result",$conserver); |
&reply("queryreply:$queryid:$result",$conserver); |
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} |
} |
Line 491 the parent process.
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Line 526 the parent process.
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=head1 DESCRIPTION |
=head1 DESCRIPTION |
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LON TCP-MySQL-Server Daemon for handling database requests. |
Not yet written. |
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=head1 README |
=head1 README |
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LON TCP-MySQL-Server Daemon for handling database requests. |
Not yet written. |
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=head1 PREREQUISITES |
=head1 PREREQUISITES |
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