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rg_database.pl
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rg_database.pl
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#!/usr/bin/perl
#
# Personal ReplayGuide
# by Lee Thompson <thompsonl@logh.net>
# with bits by Kanji T. Bates
# $Id: rg_database.pl,v 1.5 2003/07/19 13:34:20 pvanbaren Exp $
#
# DATABASE FUNCTIONS
#
#------------------------------------------------------------------------------------
# This file is part of Personal ReplayGuide (C) 2003 by Lee Thompson
#
# Personal ReplayGuide is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# Personal ReplayGuide is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Personal ReplayGuide; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#-----------------------------------------------------------------------------------
use DBI;
my $_version = "Personal ReplayGuide|Database Function Library|1|1|228|Lee Thompson,Philip Van Baren,Kanji T. Bates";
#------------------------------------------------------------------------------------
# Get script pathname, unfortunately on Apache on Win32 $0 is not reliable since
# for some reason it gets changed to an 8.3 pathname.
#
# IIS and Apache both provide long filename pathnames in environment variables so
# if it's an 8.3 we look there. If we don't find it, we just tough it out.
#------------------------------------------------------------------------------------
$script_pathname = $0;
if ($0 =~ /\~/) {
if (length($ENV{SCRIPT_FILENAME}) > 0 ) {
$script_pathname = $ENV{SCRIPT_FILENAME};
}
if (length($ENV{PATH_TRANSLATED}) > 0 ) {
$script_pathname = $ENV{PATH_TRANSLATED};
}
}
#------------------------------------------------------------------------------------
# Get the path that the script is in
#------------------------------------------------------------------------------------
(my $path,my $basename) = $script_pathname =~ m|^(.*[/\\])([^/\\]+?)$|;
#------------------------------------------------------------------------------------
# Set up module identification
#------------------------------------------------------------------------------------
my $module_name = "";
(my $debug_package, my $debug_filename, my $debug_line, my $debug_subroutine, my $debug_hasargs, my $debug_wantarray, my $debug_evaltext, my $debug_isrequire) = caller(0);
if (length($debug_evaltext) > 0) {
$module_name = $debug_evaltext;
}else{
if ($path eq "") {
$basename = $script_pathname;
}
$module_name = $basename;
}
$prg_module{$module_name} = $_version;
my $_lastsqlerror = "";
my $_lastsqlstmt = "";
#---------------------------------------------------------------------------------------
sub CreateDatabase {
#
# This will create a database.
# This only works with certain drivers.
#
# ------------------------------------------------------------------------------
if ($db_driver eq "SQLite") {
return 1;
}
if ($db_driver eq "ODBC") {
return 1;
}
my $specialdebug = 0;
my $drh = DBI->install_driver($db_driver);
if ($specialdebug) {
writeDebug("DBI driver handle is $drh");
}
if ($specialdebug) {
writeDebug("Values: $db_name, $db_host, $db_user, $db_pass");
}
my $rc = $drh->func("createdb", $db_name, $db_host, $db_user, $db_pass, 'admin');
if ($specialdebug) {
writeDebug("admin function returned $rc");
}
undef $drh;
return $rc;
}
#---------------------------------------------------------------------------------------
sub InitDSN {
#
# Define the global DSN
#
# Usage: &InitDSN
#
# NOTE: This must be called before ANYTHING else.
#
# ------------------------------------------------------------------------------
if ($db_host eq "localhost") {
$db_host = "";
}
if (length($db_host) > 0 ) {
%DATASOURCE = (
DSN => "DBI:$db_driver:host=$db_host;database=$db_dsn_name",
Username => $db_user,
Password => $db_pass,
Options => {
AutoCommit => 1,
PrintError => 0,
RaiseError => 0,
LongReadLen => 65_535,
LongTruncOk => 0,
},
usage => $db_dsn_name,
desc => "Personal ReplayGuide",
enabled => 1,
);
}else{
%DATASOURCE = (
DSN => "DBI:$db_driver:$db_dsn_name",
Username => $db_user,
Password => $db_pass,
Options => {
AutoCommit => 1,
PrintError => 0,
RaiseError => 0,
LongReadLen => 65_535,
LongTruncOk => 0,
},
usage => $db_dsn_name,
desc => "Personal ReplayGuide",
enabled => 1,
);
}
}
#---------------------------------------------------------------------------------------
sub StartDSN{
#
# Open a DSN
#
# Usage: &StartDSN
# Returns: DB Handle
#
# ------------------------------------------------------------------------------
if ($debug > 0) {
writeDebug("Establishing Connection");
}
if ($db_conflict > 0) {
$_lastsqlerror = "Database Namespace Conflict!";
return $null;
}
my $dbh = DBI->connect( @DATASOURCE{qw( DSN Username Password Options )} );
if ($dbh eq $null) {
$_lastsqlerror = $DBI::errstr;
if ($debug > 0) {
writeDebug("Failed to establish database handle.");
}
}else{
if ($debug > 0) {
writeDebug("Database handle established as $dbh");
}
}
if ($db_dsn_name ne $db_name) {
sqlStmt($dbh,"USE $db_name;");
}
if ($debug > 1) {
writeDebug("Exit");
}
return $dbh;
}
#---------------------------------------------------------------------------------------
sub endDSN {
#
# Close a DSN
#
# Parameters: sql handle
# dsn/connection handle
# Returns: True (1)
#
# ------------------------------------------------------------------------------
my $handle = shift;
my $dhandle = shift;
if ($debug > 0) {
writeDebug("Closing Connection");
}
if ($handle == 0) {
$handle = "";
}
if ($dhandle == 0) {
$dhandle = "";
}
if ($debug > 0) {
if (defined $handle) {
writeDebug("Closing SQL transaction handle $handle");
}
if (defined $dhandle) {
writeDebug("Closing SQL database handle $dhandle");
}
}
if (length($handle) > 0) {
$handle->finish;
}
if (length($dhandle) > 0) {
$dhandle->disconnect;
}
if ($debug > 0) {
writeDebug("Exit");
}
return 1;
}
#---------------------------------------------------------------------------------------
sub sqlStmt{
#
# Send SQL Statement to ODBC/SQL
#
# Parameters: database hash
# SQL Statement
#
# Usage: sqlStmt (DBHash, Stmt)
# Returns: SQL Execute Handle
#
# ------------------------------------------------------------------------------
my $db_handle = shift;
my $sql_stmt = shift;
my $handle;
if ($debug > 1) {
writeDebug("Start($db_handle,$sql_stmt)");
}
$status = 0;
if ($db_handle eq $null) {
if ($debug > 1) {
writeDebug("No DSN Link Established");
}
if ($debug > 1) {
writeDebug("Exit");
}
return 0;
}
if ($sql_stmt eq $null) {
if ($debug > 1) {
writeDebug("No SQL Statement");
}
if ($debug > 1) {
writeDebug("Exit");
}
return 0;
}
if ($debug > 1) {
writeDebug("Database handle is $db_handle");
}
$_lastsqlstmt = $sql_stmt;
$handle = $db_handle->prepare($sql_stmt);
if ($handle eq $null) {
writeDebug("Failed to Set Handle ($db_handle)");
return 0;
}else{
if ($debug > 1 ) {
writeDebug("SQL handle set to $handle for $db_handle");
}
}
if ($debug > 1) {
writeDebug("Attempting to post $sql_stmt with handle $handle");
}
if ($handle->execute) {
if ($debug > 0) {
writeDebug("$sql_stmt posted to SQL");
}
return $handle;
}else{
$_lastsqlerror = $DBI::errstr;
if ($debug > 0) {
writeDebug("$sql_stmt failed. Error: $_lastsqlerror");
}
return 0;
}
return 0;
}
#---------------------------------------------------------------------------------------
sub runSQLScript{
#
# Execute a SQL script
#
# Parameters: filename
#
# Usage: runSQLScript(Filename)
# Returns:
#
#
# ------------------------------------------------------------------------------
my $sqlfilename = shift;
my $sqlscript = "";
my $retcode = 0;
my $junk = "";
my $size = 0;
my $dataline = "";
my $buffer = "";
my $execcount = 0;
my $abort = 0;
my $specialdebug = 0;
my $debug = 0;
if ($debug > 1) {
writeDebug("Start($sqlfilename");
}
my $db_handle = &StartDSN;
if ($debug > 1) {
writeDebug("DSN handle is $db_handle");
}
if ($debug > 1) {
if ($allow_sql_substitutions) {
writeDebug("Allowing Substitutions");
}
}
if ($specialdebug) {
writeDebug("allow_sql_substitutions: $allow_sql_substitutions");
}
#---------------------------------------------------------------
# Open the file and start processing
#---------------------------------------------------------------
if (open(FHANDLE, $sqlfilename)) {
if ($debug > 1) {
writeDebug("File $sqlfilename open");
}
while (<FHANDLE>) {
$dataline = $_;
chop $dataline;
if ($debug > 2) {
writeDebug("$sqlfilename: $dataline");
}
if (substr($dataline,0,1) eq "#") {
$dataline = "";
}
if ($abort) {
$dataline = "";
}
if (($allow_sql_substitutions) && (length($dataline) > 0)) {
if ($specialdebug) {
writeDebug("Processing Substitutions");
}
#-------------------------------------------------------
# Modify USE statement
#-------------------------------------------------------
if ((uc $dataline) =~ /USE/) {
my $d_name = $dataline;
$d_name =~ s/.*use ([^;]*).*/$1/i;
if ($d_name ne $dataline) {
$d_name = trimstring($d_name);
if ($specialdebug) {
writeDebug("old dataline: $dataline");
writeDebug(" database: $d_name -> $db_name");
}
$dataline =~ s/$d_name/$db_name/g;
if ($specialdebug) {
writeDebug("new dataline: $dataline");
}
}
}
#-------------------------------------------------------
# Modify Table References
#-------------------------------------------------------
if (((uc $dataline) =~ /CREATE TABLE/) || ((uc $dataline) =~ /DROP TABLE/) || ((uc $dataline) =~ /TRUNCATE TABLE/) || ((uc $dataline) =~ /OBJECT_ID/) || ((uc $dataline) =~ /ALTER TABLE/)) {
my $t_name = $dataline;
if ($dataline =~ /dbo/i) {
$t_name =~ s/.*\[dbo\].\[([^]]*).*/$1/i;
if ($t_name eq $dataline) {
$t_name =~ s/.*dbo.([^+]*).*/$1/i;
}
}else{
if ((uc $dataline) =~ /DROP/) {
$t_name =~ s/.*table ([^;]*).*/$1/i;
}else{
$t_name =~ s/.*table ([^(]*).*/$1/i;
}
if (((uc $dataline) =~ /ALTER/) && ($tname eq $dataline)) {
$t_name =~ s/.*table ([^+]*).*/$1/i;
}
}
if ($t_name ne $dataline) {
$t_name = trimstring($t_name);
if ($specialdebug) {
writeDebug("old dataline: $dataline");
}
my $nt_name = $t_name;
if ((uc $t_name) eq "SCHEDULE" ) {
$nt_name = "$db_table_schedule";
}
if ((uc $t_name) eq "CHANNELS" ) {
$nt_name = "$db_table_channels";
}
if ((uc $t_name) eq "REPLAYUNITS" ) {
$nt_name = "$db_table_replayunits";
}
if ((uc $t_name) eq "TVLISTINGS" ) {
$nt_name = "$db_table_tvlistings";
}
if ((uc $t_name) eq "CASTCREW" ) {
$nt_name = "$db_table_castcrew";
}
if ($specialdebug) {
writeDebug(" table: $t_name -> $nt_name");
}
$dataline =~ s/$t_name/$nt_name/g;
if ($specialdebug) {
writeDebug("new dataline: $dataline");
}
}
}
#-------------------------------------------------------
# Modify Insert References
#-------------------------------------------------------
if ((uc $dataline) =~ /INSERT/) {
my $t_name = $dataline;
if ((uc $dataline) =~ /DBO/) {
$t_name =~ s/.*\[dbo\].\[([^]]*).*/$1/i;
}else{
$t_name =~ s/.*INTO ([^(]*).*/$1/i;
}
if ($t_name ne $dataline) {
$t_name = trimstring($t_name);
if ($specialdebug) {
writeDebug("old dataline: $dataline");
}
my $nt_name = $t_name;
if ((uc $t_name) eq "SCHEDULE" ) {
$nt_name = "$db_table_schedule";
}
if ((uc $t_name) eq "CHANNELS" ) {
$nt_name = "$db_table_channels";
}
if ((uc $t_name) eq "REPLAYUNITS" ) {
$nt_name = "$db_table_replayunits";
}
if ((uc $t_name) eq "TVLISTINGS" ) {
$nt_name = "$db_table_tvlistings";
}
if ((uc $t_name) eq "CASTCREW" ) {
$nt_name = "$db_table_castcrew";
}
if ($specialdebug) {
writeDebug(" table: $t_name -> $nt_name");
}
$dataline =~ s/$t_name/$nt_name/g;
if ($specialdebug) {
writeDebug("new dataline: $dataline");
}
}
}
#-------------------------------------------------------
# Modify Update References
#-------------------------------------------------------
if ((uc $dataline) =~ /UPDATE/) {
my $t_name = $dataline;
if ((uc $dataline) =~ /DBO/) {
$t_name =~ s/.*\[dbo\].\[([^]]*).*/$1/i;
}else{
$t_name =~ s/.*UPDATE ([^(]*).*/$1/i;
}
if ($t_name ne $dataline) {
$t_name = trimstring($t_name);
if ($specialdebug) {
writeDebug("old dataline: $dataline");
}
my $nt_name = $t_name;
if ((uc $t_name) eq "SCHEDULE" ) {
$nt_name = "$db_table_schedule";
}
if ((uc $t_name) eq "CHANNELS" ) {
$nt_name = "$db_table_channels";
}
if ((uc $t_name) eq "REPLAYUNITS" ) {
$nt_name = "$db_table_replayunits";
}
if ((uc $t_name) eq "TVLISTINGS" ) {
$nt_name = "$db_table_tvlistings";
}
if ((uc $t_name) eq "CASTCREW" ) {
$nt_name = "$db_table_castcrew";
}
if ($specialdebug) {
writeDebug(" table: $t_name -> $nt_name");
}
$dataline =~ s/$t_name/$nt_name/g;
if ($specialdebug) {
writeDebug("new dataline: $dataline");
}
}
}
#-------------------------------------------------------
# Modify Index References
#-------------------------------------------------------
if ((uc $dataline) =~ /INDEX/) {
my $t_name = $dataline;
$t_name =~ s/.*ON ([^(]*).*/$1/i;
if ($t_name ne $dataline) {
$t_name = trimstring($t_name);
if ($specialdebug) {
writeDebug("old dataline: $dataline");
}
my $nt_name = $t_name;
if ((uc $t_name) eq "SCHEDULE" ) {
$nt_name = "$db_table_schedule";
}
if ((uc $t_name) eq "CHANNELS" ) {
$nt_name = "$db_table_channels";
}
if ((uc $t_name) eq "REPLAYUNITS" ) {
$nt_name = "$db_table_replayunits";
}
if ((uc $t_name) eq "TVLISTINGS" ) {
$nt_name = "$db_table_tvlistings";
}
if ((uc $t_name) eq "CASTCREW" ) {
$nt_name = "$db_table_castcrew";
}
if ($specialdebug) {
writeDebug(" table: $t_name -> $nt_name");
}
$dataline =~ s/$t_name/$nt_name/g;
if ($specialdebug) {
writeDebug("new dataline: $dataline");
}
}
}
}
#---------------------------------------------------------------
# If the line is GO and this is ODBC, this is probably MSSQL
# and we need to send the buffer
#---------------------------------------------------------------
if (($dataline eq "GO") && ($db_driver eq "ODBC")) {
#
# Microsoft SQL
#
#--------------------------------------------------------
if ($debug > 1) {
writeDebug("Using Small Buffer with GO Syntax");
}
chop $buffer;
$buffer .= ";";
if (!$abort) {
if ($debug > 1) {
writeDebug("Executing: $buffer");
}
my $sql_handle = sqlStmt($db_handle,$buffer);
if ($debug > 1) {
writeDebug("Buffer returned SQL handle $sql_handle");
}
if ($sql_handle) {
$retcode = 1;
}else{
$retcode = 0;
$abort = 1;
}
$execcount++;
undef $sql_handle;
$buffer = "";
if ($debug > 1) {
writeDebug("Sent $execcount statements. Return Code: $retcode. Abort Flag: $abort");
}
}
}elsif (($dataline eq ");") && (($db_driver eq "SQLite") || ($db_driver eq "mysql")|| ($db_driver eq "ODBC"))) {
#---------------------------------------------------------------
# Likewise, if this is SQLite and the line ends with a ;
#---------------------------------------------------------------
if ($debug > 1) {
writeDebug("Using Small Buffer Syntax");
}
$buffer .= $dataline . "\n";
if (!$abort) {
if ($debug > 1) {
writeDebug("Executing: $buffer");
}
my $sql_handle = sqlStmt($db_handle,trimstring($buffer));
if ($debug > 1) {
writeDebug("Buffer returned SQL handle $sql_handle");
}
if ($sql_handle) {
$retcode = 1;
}else{
$retcode = 0;
$abort = 1;
}
$execcount++;
undef $sql_handle;
$buffer = "";
if ($debug > 1) {
writeDebug("Sent $execcount statements. Abort Flag: $abort");
}
}
}else{
#---------------------------------------------------------------
# Finish processing the dataline if it's not null.
#---------------------------------------------------------------
if (length($dataline) > 1) {
if (($dataline =~ /;/) && (($db_driver eq "SQLite") || ($db_driver eq "mysql") || ($db_driver eq "ODBC"))) {
#---------------------------------------------------------------
# If this is a single line and this is SQLite, we need to send
# the dataline.
#---------------------------------------------------------------
$buffer .= $dataline . "\n";
if (!$abort) {
if ($debug > 1) {
writeDebug("Executing: $buffer");
}
my $sql_handle = sqlStmt($db_handle,trimstring($buffer));
if ($debug > 1) {
writeDebug("Buffer returned SQL handle $sql_handle");
}
if ($sql_handle) {
$retcode = 1;
}else{
$retcode = 0;
$abort = 1;
}
$execcount++;
undef $sql_handle;
$buffer = "";
if ($debug > 1) {
writeDebug("Sent $execcount statements. Abort Flag: $abort");
}
}
}else{
#---------------------------------------------------------------
# Otherwise we need to add the line to the buffer.
#---------------------------------------------------------------
if ($debug > 3) {
writeDebug("Appending \"$dataline\" to buffer");
}
$buffer .= $dataline . "\n";
}
}
}
}
close FHANDLE;
if ($debug > 1) {
writeDebug("File closed");
}
}else{
if ($debug > 1) {
writeDebug("DSN ($db_handle) shutting down, could not open $sqlfilename");
}
$_lastsqlstmt = "runSQLScript Open $sqlfilename";
$_lastsqlerror = "runSQLScript could not open $sqlfilename";
endDSN("",$db_handle);
return 0;
}
#---------------------------------------------------------------
# If we haven't sent the buffer at all yet, do so now.
#
# mysql in particular can accept the entire script in a single
# transmission.
#---------------------------------------------------------------
if ((!$execcount) && (!$abort)) {
if ($debug > 1) {
writeDebug("Large Buffer Syntax Detected");
writeDebug("Executing: $buffer");
}
my $sql_handle = sqlStmt($db_handle,trimstring($buffer));
if ($debug > 1) {
writeDebug("Buffer returned SQL handle $sql_handle");
}
if ($sql_handle) {
$retcode = 1;
$execcount++;
}else{
$retcode = 0;
$abort = 1;
}
if ($debug > 1) {
writeDebug("Sent $execcount statements. Abort Flag: $abort");
}
}
#---------------------------------------------------------------
# cleanup and bail
#---------------------------------------------------------------
if ($debug > 1) {
writeDebug("Executed: $execcount statements. Abort Flag: $abort");
}
undef $sql_handle;
if ($debug > 1) {
writeDebug("DSN: $db_handle closing. Returning: $retcode");
}
endDSN("",$db_handle);
return $retcode;
}
#----------------------------------------------------------------------------
sub GetLastSQLStmt{
#
# Get last SQL Stmt
#
# This is stored as a local (library) variable until requested
#
# ------------------------------------------------------------------------------
return $_lastsqlstmt;
}
#----------------------------------------------------------------------------
sub GetLastSQLError{
#
# Get last SQL error message
#
# This is stored as a local (library) variable until requested
#
# ------------------------------------------------------------------------------
return $_lastsqlerror;
}
#----------------------------------------------------------------------------
sub filterfield {
#
# Escape a SQL field
#
# Usage: filterfield(String)
#
# ------------------------------------------------------------------------------
if ($debug > 1) {
writeDebug("Start");
}
my $tempvar = shift;
if ($debug > 4) {
writeDebug($tempvar);
}
if ($tempvar eq $null) {
return $tempvar;
}
$tempvar =~ s/'/''/g; # Escape quotes
$tempvar =~ s/"/''/g; # Escape quotes
if ($debug > 4) {
writeDebug($tempvar);
}
if ($debug > 1) {
writeDebug("Exit");
}
return $tempvar;
}
#----------------------------------------------------------------------------
sub timestringtosql{
#
# Convert a time string (YYYYMMDDHHMMSS) to SQL time
#
# ------------------------------------------------------------------------------
my $input_time = shift;
my $output_time = 0;
($Y,$M,$D,$h,$m,$s) = unpack 'A4 A2 A2 A2 A2 A2', $input_time;
$Y = int $Y;
if ($Y > 0) {
$output_time = "$Y-$M-$D $h:$m:$s";
}
return $output_time;
}
#----------------------------------------------------------------------------
sub sqltotimestring{
#
# Convert a SQL time to a time string (YYYYMMDDHHMMSS)
#
# ------------------------------------------------------------------------------
my $input_time = shift;
my $output_time = 0;
$output_time = substr($input_time,0,4) . substr($input_time,5,2) . substr($input_time,8,2) . substr($input_time,11,2) . substr($input_time,14,2) . "00";
return $output_time;
}
#----------------------------------------------------------------------------
sub pruneDatabase{
#