Current File : //usr/lib/php/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="$1"
fi
case "$PHP_MAINTSCRIPT_METHOD" in
install|upgrade|abort-upgrade|configure|abort-remove|abort-deconfigure|remove|failed-upgrade|purge|disappear|abort-install)
# yay - recognized script
;;
*)
echo "php-maintscript-helper invoked from a modified environment. Please hint required arguments manually" >&2
return 1
;;
esac
if [ -z "$PHP_MAINTSCRIPT_ARGUMENT" ] ; then
PHP_MAINTSCRIPT_ARGUMENT="${2:-}"
fi
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
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