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Code Editor : php-maintscript-helper

#!/bin/sh
#
# php-maintscript-helper - PHP helper function for maintainer scripts
#
# Copyright (C) 2012 Arno Töll <debian@toell.net>
#               2013 Ondřej Surý <ondrej@sury.org>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of
# this software and associated documentation files (the "Software"), to deal in
# the Software without restriction, including without limitation the rights to
# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
# the Software, and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
# FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
# COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
# IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

#
# VARIABLES
#

# global environment variables used by php-maintscript-helper:
# * PHP_MAINTSCRIPT_DEBUG:
#				set this to any non-zero value to get debug output
# * PHP_MAINTSCRIPT_HELPER_QUIET:
#				set this to any non-zero value to omit any output
# * EXPORT_PHP_MAINTSCRIPT_HELPER:
#				will be defined by php-maintscript-helper
#				to avoid inclusion loops. Do not set this
#				variable manually
# * PHP_MAINTSCRIPT_NAME
# * PHP_MAINTSCRIPT_PACKAGE
# * PHP_MAINTSCRIPT_METHOD
# * PHP_MAINTSCRIPT_ARGUMENT
#				these variables contain information about the
#				maintainer script which is calling the
#				maintscript-helper. It contains arguments which
#				dpkg supplies to maintainer scripts and similar
#				information. These variables are an
#				implementation detail and not to be changed.
#
#				You might want to set them manually only if you
#				are calling php-maintscript-helper from
#				some place which does not preserve the original
#				script arguments for example when calling from
#				a subfunction instead of the main function in
#				your maintainer script

#
# INITIALIZATION
#

if [ -n "${EXPORT_PHP_MAINTSCRIPT_HELPER:-}" ] ; then
	return
else
	EXPORT_PHP_MAINTSCRIPT_HELPER=1

if [ -n "${PHP_MAINTSCRIPT_DEBUG:-}" ] ; then
		set -x
	fi

if [ -z "$1" ] ; then
		echo "You must invoke php-maintscript-helper with an unmodified environment when sourcing it" >&2
		return 1
	fi

PHP_MAINTSCRIPT_NAME="$DPKG_MAINTSCRIPT_NAME"
	[ "$PHP_MAINTSCRIPT_NAME" ] || PHP_MAINTSCRIPT_NAME="${0##*.}"

case "$PHP_MAINTSCRIPT_NAME" in
		preinst|prerm|postrm|postinst)
			# yay - recognized script
		;;
		*)
			echo "php-maintscript-helper invoked from an unrecognized maintainer script: exiting" >&2
			return 1
		;;
	esac

PHP_MAINTSCRIPT_PACKAGE="$DPKG_MAINTSCRIPT_PACKAGE"
	if [ -z "$PHP_MAINTSCRIPT_PACKAGE" ]; then
		PHP_MAINTSCRIPT_PACKAGE="${0##*/}"
		PHP_MAINTSCRIPT_PACKAGE="${PHP_MAINTSCRIPT_PACKAGE%.*}"
	fi

if [ -z "$PHP_MAINTSCRIPT_METHOD" ] ; then
		PHP_MAINTSCRIPT_METHOD="$1"
	fi

if [ -z "$PHP_MAINTSCRIPT_ARGUMENT" ] ; then
		PHP_MAINTSCRIPT_ARGUMENT="${2:-}"
	fi

#
# FUNCTIONS
#

#
# Function php_msg
#	print out a warning to both, the syslog and a local standard output.
#	This function should generally be used to display messages related to
#	the web server in maintainer scripts.
# Parameters:
#	priority
#		The message priority. Recognized values are the same as defined
#		by syslog(3), thus: one among debug, info, notice, warning,
#		err, crit, alert, emerg.
#		If no known priority is recognized, the priority is set to
#		"warning".
#	message
#		The message as a string. It is printed out verbatim.
# Behavior:
#	No message is displayed if PHP_MAINTSCRIPT_HELPER_QUIET is defined
# Returns:
#	this function always returns 0
# Since: 5.5.0+dfsg-7
php_msg()
(
	PRIORITY="$1"
	MSG="$2"
	case "$PRIORITY" in
		debug|info|notice|warning|err|crit|alert|emerg)
		;;
		*)
			PRIORITY="warning"
		;;
	esac
	if [ -n "${PHP_MAINTSCRIPT_DEBUG:-}" ] || [ "$PRIORITY" != "debug" ]; then
	    [ -z "$PHP_MAINTSCRIPT_HELPER_QUIET" ] && echo "$MSG" >&2
	fi
	[ -x /usr/bin/logger ] || return 0
	LOGGER="/usr/bin/logger -p daemon.$PRIORITY -t $PHP_MAINTSCRIPT_PACKAGE "
	$LOGGER "$MSG" || return 0
)

#
# Function php_invoke
#	invokes an PHP configuration helper to enable or disable a
#	particular piece of configuration, a site or a module. It carefully
#	checks whether the supplied configuration snippet exists and reloads the
#	web server if the site administrator desires that by call dpkg trigger
#       /etc/php/VERSION/SAPI/conf.d which is defined for apache2, apache2filter and fpm.
#
# Parameters:
#	command - The command to invoke. Recognized commands are "enconf",
#		"enmod", "ensite", "disconf", "dismod", "dissite"
#
#       sapi - Either the specific SAPI (apache2, apache2filter, fpm,
#              cgi, cli, embed, phpdbg) or ALL
#
#	arguments
#		- A single argument (e.g. a module) which shall be
#		  enabled or disabled respectively.
#
# Returns
#	0 if the changes could be activated
#	1 otherwise
# Since: 5.5.0+dsfg-7
php_invoke()
(
    CMD=$1
    VERSION=$2
    SAPI=$3
    MOD=$4
    sapi_list=""

[ -x "/usr/sbin/php$CMD" ] || return 1
    [ -x "/usr/sbin/phpquery" ] || return 1

case "$VERSION" in
	ALL)
	    version_list=$(phpquery -V)
	    ;;
	*)
	    version_list="$VERSION"
	    # FIXME - check if the version is supported
	    ;;
    esac

for version in $version_list; do
	case "$SAPI" in
	    apache2|apache2filter|fpm|cli|cgi|embed|phpdbg)
		sapi_list="$SAPI"
		;;
	    ALL)
		sapi_list=$(phpquery -S -v "$version")
		case "$CMD" in
		    enmod|dismod)
			"php$CMD" -q -v "$version" -m -r "$MOD" || return 1
			;;
		    *)
			return 1
			;;
		esac
		;;
	    *)
		return 1
		;;
	esac

for sapi in $sapi_list; do
	    case "$CMD" in
		enmod)
		    phpquery_ret=0
		    phpquery -v "$version" -s "$sapi" -m "$MOD" > /dev/null 2>&1 || phpquery_ret=$?
		    if [ "$phpquery_ret" -eq 0 ] ; then
			# configuration is already enabled
			"php$CMD" -m -v "$version" -s "$sapi" -q "$MOD" > /dev/null 2>&1 || return 1
			php_msg "debug" "php_invoke $MOD: already enabled for PHP $version $sapi sapi"
			PHP_NEED_ACTION=1
		    elif [ "$phpquery_ret" -eq 32	 ] ; then
			# the maintainer disabled the module
			php_msg "info" "php_invoke $MOD: no action - module was disabled by maintainer for PHP $version $sapi sapi"
			return 0
		    else
			# coming here either means:
			# a) we have no clue about the module (e.g. for upgrades prior to maintscript-helper
			# b) it's a fresh install
			PHP_NEED_ACTION=1
			"php$CMD" -m -v "$version" -s "$sapi" -q "$MOD" > /dev/null 2>&1 || return 1
			php_msg "debug" "php_invoke: Enabled module $MOD for $sapi sapi"
		    fi
		    ;;
		dismod)
		    phpquery_ret=0
		    phpquery -v "$version" -s "$sapi" -m "$MOD" > /dev/null 2>&1 || phpquery_ret=$?
		    if [ "$phpquery_ret" -eq 0 ] ; then
			if [ "$PHP_MAINTSCRIPT_NAME" = 'postrm' ] && [ "$PHP_MAINTSCRIPT_METHOD" = "purge" ] ; then
			    "php$CMD" -p -f -v "$version" -s "$sapi" -q "$MOD" || return 1
			    php_msg "debug" "php_invoke $PHP_MAINTSCRIPT_NAME: Purging module $MOD for PHP $version $sapi sapi"
			    PHP_NEED_ACTION=1
			elif [ "$PHP_MAINTSCRIPT_NAME" = 'postrm' ] || [ "$PHP_MAINTSCRIPT_NAME" = 'prerm' ] || [ "$PHP_MAINTSCRIPT_NAME" = 'preinst' ] ; then
			    if [ "$PHP_MAINTSCRIPT_METHOD" = "remove" ] || [ "$PHP_MAINTSCRIPT_METHOD" = "upgrade" ] ; then
				"php$CMD" -m -f -v "$version" -s "$sapi" -q "$MOD" || return 1
				php_msg "debug" "php_invoke $PHP_MAINTSCRIPT_NAME: Disabled module $MOD for PHP $version $sapi sapi"
				PHP_NEED_ACTION=1
			    fi
			else
			    php_msg "error" "php_invoke: module $MOD not supported in $PHP_MAINTSCRIPT_NAME for PHP $version $sapi sapi"
			    return 1
			fi
		    elif [ "$phpquery_ret" -eq 32 ] || [ "$phpquery_ret" -eq 33 ] ; then
			if [ "$PHP_MAINTSCRIPT_NAME" = 'postrm' ] && [ "$PHP_MAINTSCRIPT_METHOD" = "purge" ] ; then
			    php_msg "debug" "php_invoke $PHP_MAINTSCRIPT_NAME: Purging state for $MOD for PHP $version $sapi sapi"
			    # this will return RC=1
			    ( "php$CMD" -p -f -v "$version" -s "$sapi" -q "$MOD" > /dev/null 2>&1 )
			else
			    php_msg "debug" "php_invoke $MOD $PHP_MAINTSCRIPT_NAME: No action required for PHP $version $sapi sapi"
			fi
		    else
			php_msg "debug" "php_invoke $MOD $PHP_MAINTSCRIPT_NAME: No action required for PHP $version $sapi sapi"
		    fi
		    ;;
		*)
		    return 1
		    ;;
	    esac
	    if [ -n "${PHP_NEED_ACTION:-}" ]; then
		dpkg-trigger "/etc/php/$version/$sapi/conf.d"
	    fi
	done
    done
)

# vim: syntax=sh sw=8 sts=8 sr noet

${this.title}

Code Editor : php-maintscript-helper