#!/bin/sh
#
#	rc.php_ini_setup
#	Copyright (C) 2010 Scott Ullrich <sullrich@gmail.com>
#	All rights reserved.
#
#	Redistribution and use in source and binary forms, with or without
#	modification, are permitted provided that the following conditions are met:
#
#	1. Redistributions of source code must retain the above copyright notice,
#	   this list of conditions and the following disclaimer.
#
#	2. Redistributions in binary form must reproduce the above copyright
#	   notice, this list of conditions and the following disclaimer in the
#	   documentation and/or other materials provided with the distribution.
#
#	THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
#	INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
#	AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
#	AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
#	OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
#	SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
#	INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
#	CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
#	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
#	POSSIBILITY OF SUCH DAMAGE.

# Set our operating platform
PLATFORM=`/bin/cat /etc/platform`
MIN_REALMEM_FOR_APC=512

if [ -d /usr/local/lib/php/20090626 ]; then
	EXTENSIONSDIR="/usr/local/lib/php/20090626/"
else
	EXTENSIONSDIR="/usr/local/lib/php/20060613/"
fi

# Grab amount of memory that is detected
if [ -f /var/log/dmesg.boot ]; then
	AVAILMEM=`/bin/cat /var/log/dmesg.boot |/usr/bin/awk '/avail memory/ { memory=($4 / 1048576); printf("%0.0f\n", memory); exit}'`
else 
	AVAILMEM=`/sbin/dmesg -a |/usr/bin/awk '/avail memory/ { memory=($4 / 1048576); printf("%0.0f\n", memory); exit}'`
fi

if [ -z "$AVAILMEM" ]; then
	MEM=`/sbin/sysctl hw.physmem | cut -d':' -f2`
	AVAILMEM=`/bin/expr $MEM / 1048576`
fi


# Get amount of ram installed on this system
REALMEM=`/sbin/sysctl hw.realmem | /usr/bin/awk '{print $2/1048576}' | /usr/bin/awk -F '.' '{print $1}'`
export REALMEM
export LOWMEM

if [  "$REALMEM" -lt "$MIN_REALMEM_FOR_APC" ]; then
	LOWMEM="TRUE"
	echo ">>> Under $MIN_REALMEM_FOR_APC megabytes of ram detected.  Not enabling APC."
	echo ">>> Under $MIN_REALMEM_FOR_APC megabytes of ram detected.  Not enabling APC." | /usr/bin/logger -p daemon.info -i -t rc.php_ini_setup
else

	# Calculate APC SHM size according 
	# to detected memory values
	if [ "$AVAILMEM" -gt "135" ]; then
		APCSHMEMSIZE="10M"
	fi
	if [ "$AVAILMEM" -gt "256" ]; then
		APCSHMEMSIZE="20M"
	fi
	if [ "$AVAILMEM" -gt "384" ]; then
		APCSHMEMSIZE="25M"
	fi
	if [ "$AVAILMEM" -gt "512" ]; then
		APCSHMEMSIZE="30M"
	fi
	if [ "$AVAILMEM" -gt "784" ]; then
		APCSHMEMSIZE="50M"
	fi
fi

# Set upload directory
if [ "$PLATFORM" = "embedded" -o "$PLATFORM" = "nanobsd" ]; then
	UPLOADTMPDIR=`/usr/bin/grep upload_path /etc/inc/globals.inc | /usr/bin/cut -d'"' -f4`
else 
	UPLOADTMPDIR="/tmp"
fi

# Define php modules.  Do not add .so, it will  
# be done automatically by the script below.
PHPMODULES="standard"
if [ "$LOWMEM" != "TRUE" ]; then
	PHPMODULES="$PHPMODULES apc"
fi
# Config read/write
PHPMODULES="$PHPMODULES xml libxml dom"
PHPMODULES="$PHPMODULES simplexml xmlreader xmlwriter"
# Downloading via HTTP/FTP (pkg mgr, etc)
PHPMODULES="$PHPMODULES curl date"
# Internationalization 
PHPMODULES="$PHPMODULES gettext"
# User manager
PHPMODULES="$PHPMODULES ldap openssl pcntl"
PHPMODULES="$PHPMODULES hash"
PHPMODULES="$PHPMODULES mcrypt"
# Regexs, PERL style!
PHPMODULES="$PHPMODULES pcre"
# The mighty posix!
PHPMODULES="$PHPMODULES posix"
PHPMODULES="$PHPMODULES readline"
# Login sessions
PHPMODULES="$PHPMODULES session"
# Extra sanity seatbelts
PHPMODULES="$PHPMODULES suhosin"
# Firewall rules edit
PHPMODULES="$PHPMODULES ctype"
# firewall_rules_edit.php
PHPMODULES="$PHPMODULES mbstring"
# Synchronization primitives
PHPMODULES="$PHPMODULES shmop"
# Page compression
PHPMODULES="$PHPMODULES zlib"
# SQLlite & Database
PHPMODULES="$PHPMODULES spl"
PHPMODULES="$PHPMODULES pdo"
PHPMODULES="$PHPMODULES sqlite"
# RADIUS
PHPMODULES="$PHPMODULES radius"
# ZeroMQ
PHPMODULES="$PHPMODULES zmq"
# SSH2
PHPMODULES="$PHPMODULES ssh2"
# pfSense extensions
PHPMODULES="$PHPMODULES pfSense"
# json
PHPMODULES="$PHPMODULES json"
# bcmath
PHPMODULES="$PHPMODULES bcmath"

PHP_ZEND_MODULES="ioncube_loader"
PHP_ZEND_MODULES_TS="ioncube_loader_ts"

# Modules previously included.
# can be turned on by touching
# /etc/php_dynamodules/$modulename
#	sysvmsg \
#	sysvsem \
#	sysvshm \
#	bcmath \
#	tokenizer \
#	uploadprogress \
#	sockets \
#	Reflection \
#	mysql \
#	bz2	\

# Clear the .ini file to make sure we are clean
if [ -f /usr/local/etc/php.ini ]; then
	/bin/rm /usr/local/etc/php.ini
fi
if [ -f /usr/local/lib/php.ini ]; then
	/bin/rm /usr/local/lib/php.ini
fi
LOADED_MODULES=`/usr/local/bin/php -m | /usr/bin/grep -v "\["`

# Fetch the timezone from the XML and set it here. We set it later too in the running scripts
TIMEZONE=`cat /conf/config.xml | egrep -E '<timezone>(.*?)</timezone>' | awk -F'>' '{print $2}'|awk -F'<' '{print $1}'`

# Get a loaded module list in the stock php
# Populate a dummy php.ini to avoid
# the file being clobbered and the firewall
# not being able to boot back up.
/bin/cat >/usr/local/lib/php.ini <<EOF
; File generated from /etc/rc.php_ini_setup
output_buffering = "0"
expose_php = Off
implicit_flush = true
magic_quotes_gpc = Off
max_execution_time = 900
max_input_time = 1800
register_argc_argv = On
file_uploads = On
upload_tmp_dir = ${UPLOADTMPDIR}
upload_max_filesize = 200M
post_max_size = 200M
html_errors = Off
zlib.output_compression = Off
zlib.output_compression_level = 1
include_path = ".:/etc/inc:/usr/local/www:/usr/local/captiveportal:/usr/local/pkg"
display_startup_errors=on
display_errors=on
log_errors=on
error_log=/tmp/PHP_errors.log
extension_dir=${EXTENSIONSDIR}
date.timezone="${TIMEZONE}"

; Extensions

EOF

# Copy php.ini file to etc/ too (cli)
/bin/cp /usr/local/lib/php.ini /usr/local/etc/php.ini

# Ensure directory exists
if [ ! -d /etc/php_dynamodules ]; then
	/bin/mkdir /etc/php_dynamodules
fi
if [ ! -d /etc/php_dynamodules_zend ]; then
	/bin/mkdir /etc/php_dynamodules_zend
fi
if [ ! -d /etc/php_dynamodules_zend_ts ]; then
	/bin/mkdir /etc/php_dynamodules_zend_ts
fi

# Read in dynamodules
if [ -d /etc/php_dynamodules ]; then
	DYNA_MODULES=`/bin/ls -Utr /etc/php_dynamodules/`
	PHPMODULES="$PHPMODULES $DYNA_MODULES"
fi

# Read in zend modules
if [ -d /etc/php_dynamodules_zend ]; then
	DYNA_MODULES=`/bin/ls /etc/php_dynamodules_zend/`
	PHP_ZEND_MODULES="$PHP_ZEND_MODULES $DYNA_MODULES"
fi

# Read in zend threaded modules
if [ -d /etc/php_dynamodules_zend_ts ]; then
	DYNA_MODULES=`/bin/ls /etc/php_dynamodules_zend_ts/`
	PHP_ZEND_MODULES_TS="$PHP_ZEND_MODULES_TS $DYNA_MODULES"
fi

# Loop through and generate modules to load.
# Take into account modules built into php.
for EXT in $PHPMODULES; do
	SHOULDADD="true"
	# Check to see if module is compiled into php statically
	for LM in $LOADED_MODULES; do
		if [ "$EXT" = "$LM" ]; then
			SHOULDADD="false"
		fi
	done
	if [ "$SHOULDADD" = "true" ]; then
		# Ensure extension exists before adding.
		if [ -f "${EXTENSIONSDIR}${EXT}.so" ]; then
			echo "extension=${EXT}.so" >> /usr/local/lib/php.ini
		fi
	fi
done

# Zend modules
for EXT in $PHP_ZEND_MODULES; do
	# Ensure extension exists before adding.
	if [ -f "${EXTENSIONSDIR}/ioncube/${EXT}.so" ]; then
		echo "zend_extension=${EXTENSIONSDIR}/ioncube/${EXT}.so" >> /usr/local/lib/php.ini
	fi
done

# Zend threaded modules
for EXT in $PHP_ZEND_MODULES_TS; do
	# Ensure extension exists before adding.
	if [ -f "${EXTENSIONSDIR}/ioncube/${EXT}.so" ]; then
		echo "zend_extension_ts=${EXTENSIONSDIR}/ioncube/${EXT}.so" >> /usr/local/lib/php.ini
	fi
done


if [ "$LOWMEM" != "TRUE" ]; then

	/bin/cat >>/usr/local/lib/php.ini <<EOF

; APC Settings
apc.enabled="1"
apc.enable_cli="0"
apc.shm_size="${APCSHMEMSIZE}"

EOF
fi

	/bin/cat >>/usr/local/lib/php.ini <<EOF

[suhosin]
suhosin.get.max_array_depth = 5000
suhosin.get.max_array_index_length = 256
suhosin.get.max_vars = 5000
suhosin.get.max_value_length = 500000
suhosin.post.max_array_depth = 5000
suhosin.post.max_array_index_length = 256
suhosin.post.max_vars = 5000
suhosin.post.max_value_length = 500000
suhosin.request.max_array_depth = 5000
suhosin.request.max_array_index_length = 256
suhosin.request.max_vars = 5000
suhosin.request.max_value_length = 500000
suhosin.memory_limit = 512435456

EOF


# Copy php.ini file to etc/ too (cli)
/bin/cp /usr/local/lib/php.ini /usr/local/etc/php.ini

# Remove old log file if it exists.
if [ -f /var/run/php_modules_load_errors.txt ]; then
	/bin/rm /var/run/php_modules_load_errors.txt
fi 

for EXT in $PHPMODULES; do
	PHPMODULESLC="$PHPMODULESLC `echo "$EXT" | /usr/bin/tr '[:upper:]' '[:lower:]'`"
done

# Check loaded modules and remove anything that did not load correctly
LOADED_MODULES=`/usr/local/bin/php -m | /usr/bin/tr '[:upper:]' '[:lower:]' 2>/dev/null | /usr/bin/grep -v "\["`
for EXT in $PHPMODULESLC; do
	SHOULDREMOVE="true"
	for LM in $LOADED_MODULES; do
		if [ "$EXT" = "$LM" ]; then
			SHOULDREMOVE="false"
		fi		
	done
	# Handle low memory situations
	if [ "$LOWMEM" = "TRUE" ]; then
		if [ "$EXT" = "apc" ]; then
			SHOULDREMOVE="true"
		fi
		if [ "$EXT" = "xcache" ]; then
			SHOULDREMOVE="true"
		fi
	fi
	if [ "$SHOULDREMOVE" = "true" ]; then
		if [ -f "${EXTENSIONSDIR}${EXT}.so" ]; then
			echo ">>> ${EXT} did not load correctly.  Removing from php.ini..." >> /var/run/php_modules_load_errors.txt
			/bin/cat /usr/local/lib/php.ini | /usr/bin/grep -v $EXT > /tmp/php.ini
			/bin/rm -f /usr/local/lib/php.ini
			/bin/mv /tmp/php.ini /usr/local/lib/php.ini
		fi
	fi
done

# Copy php.ini file to etc/ too (cli)
/bin/cp /usr/local/lib/php.ini /usr/local/etc/php.ini