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#!/usr/bin/perl
#
# Copyright (c) 2008 Digium, Inc.
#
# Tilghman Lesher <dbsep.cgi@the-tilghman.com>
#
# See http://www.asterisk.org for more information about
# the Asterisk project. Please do not directly contact
# any of the maintainers of this project for assistance;
# the project provides a web site, mailing lists and IRC
# channels for your use.
#
# This program is free software, distributed under the terms of
# the GNU General Public License Version 2. See the LICENSE file
# at the top of the source tree.
#
# $Id$
#
use CGI;
use DBI;
use strict;
my ($cgi, $dbh, %cfg, $table, $mode);
# The following settings are expected:
#
# dsn=<some valid dsn>
# dbuser=<user>
# dbpass=<passwd>
# dbschema=<dbname>
# backslash_is_escape={yes|no}
#
open CFG, "</etc/asterisk/dbsep.conf";
while (<CFG>) {
chomp;
next if (m/^[#;]/);
next if (m/^\s*$/);
my ($name,@value) = split '=';
$cfg{lc($name)} = join('=', @value);
}
close CFG;
$cgi = new CGI;
$ENV{PATH_INFO} =~ m/\/([^\/]*)\/([^\/]*)$/;
($table, $mode) = ($1, lc($2));
#print STDERR "PATH_INFO=$ENV{PATH_INFO}, table=$table, mode=$mode\n";
if ($mode eq 'single') {
# All parameters as POST
my ($sql, $sth, $row, @answer);
$sql = "SELECT * FROM $table WHERE " . join(" AND ", cgi_to_where_clause($cgi, \%cfg));
$dbh = DBI->connect($cfg{dsn}, $cfg{dbuser}, $cfg{dbpass});
$sth = $dbh->prepare($sql) || throw_error("Invalid query: $sql");
$sth->execute() || throw_error("Invalid query: $sql");
$row = $sth->fetchrow_hashref();
foreach (keys %$row) {
foreach my $item (split /\;/, $row->{$_}) {
push @answer, encode($_) . "=" . encode($item);
}
}
$sth->finish();
$dbh->disconnect();
print "Content-type: text/plain\n\n";
print join("&", @answer) . "\n";
} elsif ($ENV{PATH_INFO} =~ m/multi$/) {
# All parameters as POST
my ($sql, $sth, @answer);
$sql = "SELECT * FROM $table WHERE " . join(" AND ", cgi_to_where_clause($cgi, \%cfg));
$dbh = DBI->connect($cfg{dsn}, $cfg{dbuser}, $cfg{dbpass});
$sth = $dbh->prepare($sql) || throw_error("Invalid query: $sql");
$sth->execute() || throw_error("Invalid query: $sql");
print "Content-type: text/plain\n\n";
while (my $row = $sth->fetchrow_hashref()) {
@answer = ();
foreach (keys %$row) {
foreach my $item (split /\;/, $row->{$_}) {
push @answer, encode($_) . "=" . encode($item);
}
}
print join("&", @answer) . "\n";
}
$sth->finish();
$dbh->disconnect();
} elsif ($ENV{PATH_INFO} =~ m/update$/) {
# where clause in GET, update parameters in POST
my (%get, @get, $sql, $name, $value, $affected);
foreach (split '&', $ENV{QUERY_STRING}) {
($name, $value) = split '=';
$name = decode($name);
next if (!isname($name));
$value = escape_value(decode($value));
if ($name =~ m/ /) {
push @get, "$name '$value'";
} else {
push @get, "$name='$value'";
}
$get{$name}++;
}
$sql = "UPDATE $table SET " . join(",", cgi_to_where_clause($cgi, \%cfg, \%get)) . " WHERE " . join(" AND ", @get);
$dbh = DBI->connect($cfg{dsn}, $cfg{dbuser}, $cfg{dbpass});
$affected = $dbh->do($sql);
$dbh->disconnect();
print "Content-type: text/html\n\n$affected\n";
} elsif ($ENV{PATH_INFO} =~ m/store$/) {
# All parameters as POST
my (@param, $sql, @fields, @values, $affected);
foreach my $param (cgi_to_where_clause($cgi, \%cfg)) {
my ($name, $value) = split /=/, $param;
push @fields, $name;
push @values, $value;
}
$sql = "INSERT INTO $table (" . join(",", @fields) . ") VALUES (" . join(",", @values) . ")";
$dbh = DBI->connect($cfg{dsn}, $cfg{dbuser}, $cfg{dbpass});
$affected = $dbh->do($sql);
$dbh->disconnect();
print "Content-type: text/html\n\n$affected\n";
} elsif ($ENV{PATH_INFO} =~ m/destroy$/) {
# All parameters as POST
my ($sql, $affected);
$sql = "DELETE FROM $table WHERE " . join(" AND ", cgi_to_where_clause($cgi, \%cfg));
$dbh = DBI->connect($cfg{dsn}, $cfg{dbuser}, $cfg{dbpass});
$affected = $dbh->do($sql);
$dbh->disconnect();
print "Content-type: text/html\n\n$affected\n";
} elsif ($ENV{PATH_INFO} =~ m/require$/) {
my $result = 0;
my $dbh = DBI->connect($cfg{dsn}, $cfg{dbuser}, $cfg{dbpass});
my $sql = "SELECT data_type, character_maximum_length FROM information_schema.tables AS t " .
"JOIN information_schema.columns AS c " .
"ON t.table_catalog=c.table_catalog AND " .
"t.table_schema=c.table_schema AND " .
"t.table_name=c.table_name " .
"WHERE c.table_schema='$cfg{dbschema}' AND " .
"c.table_name=? AND c.column_name=?";
my $sth = $dbh->prepare($sql);
foreach my $param (cgi_to_where_clause($cgi, \%cfg)) {
my ($colname, $value) = split /=/, $param;
my ($type, $size) = split /:/, $value;
$sth->execute($table, $colname);
my ($dbtype, $dblen) = $sth->fetchrow_array();
$sth->finish();
if ($type eq 'char') {
if ($dbtype !~ m#char#i) {
print STDERR "REQUIRE: $table: Type of column $colname requires char($size), but column is of type $dbtype instead!\n";
$result = -1;
} elsif ($dblen < $size) {
print STDERR "REQUIRE: $table: Size of column $colname requires $size, but column is only $dblen long!\n";
$result = -1;
}
} elsif ($type eq 'integer') {
if ($dbtype =~ m#char#i and $dblen < $size) {
print STDERR "REQUIRE: $table: Size of column $colname requires $size, but column is only $dblen long!\n";
$result = -1;
} elsif ($dbtype !~ m#int|float|double|dec|num#i) {
print STDERR "REQUIRE: $table: Type of column $colname requires integer($size), but column is of type $dbtype instead!\n";
$result = -1;
}
} # TODO More type checks
}
$dbh->disconnect();
print "Content-type: text/html\n\n$result\n";
} elsif ($ENV{PATH_INFO} =~ m/static$/) {
# file parameter in GET, no POST
my (@get, $filename, $sql, $sth);
@get = split '&', $ENV{QUERY_STRING};
foreach (@get) {
my ($name, $value) = split '=';
if (decode($name) eq 'file') {
$filename = decode($value);
last;
}
}
$sql = "SELECT cat_metric, category, var_name, var_val FROM $table WHERE filename=" . escape_value($filename) . " AND commented=0 ORDER BY cat_metric DESC, var_metric ASC, category, var_name";
$dbh = DBI->connect($cfg{dsn}, $cfg{dbuser}, $cfg{dbpass});
$sth = $dbh->prepare($sql) || throw_error("Invalid query: $sql");
$sth->execute() || throw_error("Invalid query: $sql");
print "Content-type: text/plain\n\n";
while (my $row = $sth->fetchrow_hashref()) {
my @answer = ();
foreach (keys %$row) {
push @answer, encode($_) . "=" . encode($row->{$_});
}
print join("&", @answer) . "\n";
}
$sth->finish();
$dbh->disconnect();
} else {
print "Content-type: text/plain\n\nUnknown query\n";
}
sub encode {
my ($stuff) = @_;
$stuff =~ s/([^a-zA-Z0-9_\.])/uc sprintf("%%%02x",ord($1))/eg;
return $stuff;
}
sub decode {
my ($stuff) = @_;
$stuff =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
return $stuff;
}
sub isname {
my ($name) = @_;
if ($name =~ m#[^A-Za-z0-9_ ]#) {
return 0;
} else {
return 1;
}
}
sub escape_value {
my ($value, $cfg) = @_;
if ($cfg->{backslash_is_escape} =~ m/^(no|0|false)$/i) {
$value =~ s#'#''#g;
} else {
$value =~ s#(['\\])#$1$1#g;
}
return $value;
}
sub cgi_to_where_clause {
my ($cgi, $cfg, $get) = @_;
my @param = ();
foreach my $name ($cgi->param()) {
my $value = escape_value($cgi->param($name), $cfg);
# Ensure name isn't funny-like
next if (!isname($name));
next if ($get->{$name});
if ($name =~ m# #) {
push @param, "$name '$value'";
} else {
push @param, "$name='$value'";
}
}
return @param;
}
sub throw_error {
my ($msg) = @_;
print "Content-type: text/plain\n\n$msg\n";
print STDERR $msg . "\n";
exit;
}
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