#
# Taken from the official PHP image's Dockerfile
# (https://github.com/docker-library/php/tree/df4636cac888ec860ccbf0f200637b88a2fb22ab/8.0/bullseye/fpm),
# with the changes marked "chialab:".
#

# chialab: deb.sury.org's patches for this version, from the Salsa commit of the build named in PHP_PATCHES.
FROM scratch AS deb-patches
ARG DEB_PATCHES=https://salsa.debian.org/php-team/php/-/archive/abebea27da1d5cf90a0e83ab81ea3e708886aebb/php-abebea27da1d5cf90a0e83ab81ea3e708886aebb.tar.gz?path=debian/patches
ADD --unpack=true $DEB_PATCHES /

FROM debian:bullseye-slim

# chialab: Debian bullseye has been moved to archive.debian.org.
RUN sed -i -e 's/deb.debian.org/archive.debian.org/g' \
           -e 's/security.debian.org/archive.debian.org/g' \
           -e '/bullseye-updates/d' /etc/apt/sources.list

# prevent Debian's PHP packages from being installed
# https://github.com/docker-library/php/pull/542
RUN set -eux; \
	{ \
		echo 'Package: php*'; \
		echo 'Pin: release *'; \
		echo 'Pin-Priority: -1'; \
	} > /etc/apt/preferences.d/no-debian-php

# dependencies required for running "phpize"
# (see persistent deps below)
ENV PHPIZE_DEPS \
		autoconf \
		dpkg-dev \
		file \
		g++ \
		gcc \
		libc-dev \
		make \
		pkg-config \
		re2c

# persistent / runtime deps
RUN set -eux; \
	apt-get update; \
	apt-get install -y --no-install-recommends \
		$PHPIZE_DEPS \
		ca-certificates \
		curl \
		xz-utils \
	; \
	rm -rf /var/lib/apt/lists/*

ENV PHP_INI_DIR /usr/local/etc/php
RUN set -eux; \
	mkdir -p "$PHP_INI_DIR/conf.d"; \
# allow running as an arbitrary user (https://github.com/docker-library/php/issues/743)
	[ ! -d /var/www/html ]; \
	mkdir -p /var/www/html; \
	chown www-data:www-data /var/www/html; \
	chmod 1777 /var/www/html

# Apply stack smash protection to functions using local buffers and alloca()
# Make PHP's main executable position-independent (improves ASLR security mechanism, and has no performance impact on x86_64)
# Enable optimization (-O2)
# Enable linker optimization (this sorts the hash buckets to improve cache locality, and is non-default)
# https://github.com/docker-library/php/issues/272
# -D_LARGEFILE_SOURCE and -D_FILE_OFFSET_BITS=64 (https://www.php.net/manual/en/intro.filesystem.php)
ENV PHP_CFLAGS="-fstack-protector-strong -fpic -fpie -O2 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
ENV PHP_CPPFLAGS="$PHP_CFLAGS"
ENV PHP_LDFLAGS="-Wl,-O1 -pie"

ENV GPG_KEYS 1729F83938DA44E27BA0F4D3DBDB397470D12172 BFDDD28642824F8118EF77909B67A5C12229118F 2C16C765DBE54A088130F1BC4B9B5F600B55F3B4 39B641343D8C104B2B146DC3F9C39DC0B9698544

ENV PHP_VERSION 8.0.30
ENV PHP_URL="https://www.php.net/distributions/php-8.0.30.tar.xz" PHP_ASC_URL="https://www.php.net/distributions/php-8.0.30.tar.xz.asc"
ENV PHP_SHA256="216ab305737a5d392107112d618a755dc5df42058226f1670e9db90e77d777d9"

RUN set -eux; \
	\
	savedAptMark="$(apt-mark showmanual)"; \
	apt-get update; \
	apt-get install -y --no-install-recommends gnupg; \
	rm -rf /var/lib/apt/lists/*; \
	\
	mkdir -p /usr/src; \
	cd /usr/src; \
	\
	curl -fsSL -o php.tar.xz "$PHP_URL"; \
	\
	if [ -n "$PHP_SHA256" ]; then \
		echo "$PHP_SHA256 *php.tar.xz" | sha256sum -c -; \
	fi; \
	\
	if [ -n "$PHP_ASC_URL" ]; then \
		curl -fsSL -o php.tar.xz.asc "$PHP_ASC_URL"; \
		export GNUPGHOME="$(mktemp -d)"; \
		for key in $GPG_KEYS; do \
			gpg --batch --keyserver keyserver.ubuntu.com --recv-keys "$key"; \
		done; \
		gpg --batch --verify php.tar.xz.asc php.tar.xz; \
		gpgconf --kill all; \
		rm -rf "$GNUPGHOME"; \
	fi; \
	\
	apt-mark auto '.*' > /dev/null; \
	apt-mark manual $savedAptMark > /dev/null; \
	apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false

# chialab: helper scripts are added from the source commit.
ARG DOCKER_PHP_SCRIPTS=https://raw.githubusercontent.com/docker-library/php/df4636cac888ec860ccbf0f200637b88a2fb22ab/8.0/bullseye/fpm
ADD --chmod=755 $DOCKER_PHP_SCRIPTS/docker-php-source /usr/local/bin/

# chialab: security backports for this EOL version (see eol/patches).
ENV PHP_PATCHES="deb.sury.org-8.0.30-25"
LABEL it.chialab.php.patches="deb.sury.org-8.0.30-25"
RUN --mount=type=bind,from=deb-patches,target=/usr/src/deb-patches \
	--mount=type=bind,from=patches,source=series.8.0,target=/usr/src/php-series \
	--mount=type=bind,from=patches,source=docker-php-source-patch,target=/usr/local/bin/docker-php-source-patch \
	docker-php-source-patch /usr/src/php-series /usr/src/deb-patches

RUN set -eux; \
	\
	savedAptMark="$(apt-mark showmanual)"; \
	apt-get update; \
	apt-get install -y --no-install-recommends \
		libargon2-dev \
		libcurl4-openssl-dev \
		libonig-dev \
		libreadline-dev \
		libsodium-dev \
		libsqlite3-dev \
		libssl-dev \
		libxml2-dev \
		zlib1g-dev \
	; \
	\
	export \
		CFLAGS="$PHP_CFLAGS" \
		CPPFLAGS="$PHP_CPPFLAGS" \
		LDFLAGS="$PHP_LDFLAGS" \
	; \
	docker-php-source extract; \
	cd /usr/src/php; \
	gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
	debMultiarch="$(dpkg-architecture --query DEB_BUILD_MULTIARCH)"; \
# https://bugs.php.net/bug.php?id=74125
	if [ ! -d /usr/include/curl ]; then \
		ln -sT "/usr/include/$debMultiarch/curl" /usr/local/include/curl; \
	fi; \
	./configure \
		--build="$gnuArch" \
		--with-config-file-path="$PHP_INI_DIR" \
		--with-config-file-scan-dir="$PHP_INI_DIR/conf.d" \
		\
# make sure invalid --configure-flags are fatal errors instead of just warnings
		--enable-option-checking=fatal \
		\
# https://github.com/docker-library/php/issues/439
		--with-mhash \
		\
# https://github.com/docker-library/php/issues/822
		--with-pic \
		\
# --enable-ftp is included here because ftp_ssl_connect() needs ftp to be compiled statically (see https://github.com/docker-library/php/issues/236)
		--enable-ftp \
# --enable-mbstring is included here because otherwise there's no way to get pecl to use it properly (see https://github.com/docker-library/php/issues/195)
		--enable-mbstring \
# --enable-mysqlnd is included here because it's harder to compile after the fact than extensions are (since it's a plugin for several extensions, not an extension in itself)
		--enable-mysqlnd \
# https://wiki.php.net/rfc/argon2_password_hash
		--with-password-argon2 \
# https://wiki.php.net/rfc/libsodium
		--with-sodium=shared \
# always build against system sqlite3 (https://github.com/php/php-src/commit/6083a387a81dbbd66d6316a3a12a63f06d5f7109)
		--with-pdo-sqlite=/usr \
		--with-sqlite3=/usr \
		\
		--with-curl \
		--with-iconv \
		--with-openssl \
		--with-readline \
		--with-zlib \
		\
# https://github.com/bwoebi/phpdbg-docs/issues/1#issuecomment-163872806 ("phpdbg is primarily a CLI debugger, and is not suitable for debugging an fpm stack.")
		--disable-phpdbg \
		\
# in PHP 7.4+, the pecl/pear installers are officially deprecated (requiring an explicit "--with-pear")
		--with-pear \
		\
# bundled pcre does not support JIT on s390x
# https://manpages.debian.org/bullseye/libpcre3-dev/pcrejit.3.en.html#AVAILABILITY_OF_JIT_SUPPORT
		$(test "$gnuArch" = 's390x-linux-gnu' && echo '--without-pcre-jit') \
		--with-libdir="lib/$debMultiarch" \
		\
		--disable-cgi \
		\
		--enable-fpm \
		--with-fpm-user=www-data \
		--with-fpm-group=www-data \
	; \
	make -j "$(nproc)"; \
	find -type f -name '*.a' -delete; \
	make install; \
	find \
		/usr/local \
		-type f \
		-perm '/0111' \
		-exec sh -euxc ' \
			strip --strip-all "$@" || : \
		' -- '{}' + \
	; \
	make clean; \
	\
# https://github.com/docker-library/php/issues/692 (copy default example "php.ini" files somewhere easily discoverable)
	cp -v php.ini-* "$PHP_INI_DIR/"; \
	\
	cd /; \
	docker-php-source delete; \
	\
# reset apt-mark's "manual" list so that "purge --auto-remove" will remove all build dependencies
	apt-mark auto '.*' > /dev/null; \
	[ -z "$savedAptMark" ] || apt-mark manual $savedAptMark; \
	find /usr/local -type f -executable -exec ldd '{}' ';' \
		| awk '/=>/ { so = $(NF-1); if (index(so, "/usr/local/") == 1) { next }; gsub("^/(usr/)?", "", so); print so }' \
		| sort -u \
		| xargs -r dpkg-query --search \
		| cut -d: -f1 \
		| sort -u \
		| xargs -r apt-mark manual \
	; \
	apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
	rm -rf /var/lib/apt/lists/*; \
	\
# update pecl channel definitions https://github.com/docker-library/php/issues/443
	pecl update-channels; \
	rm -rf /tmp/pear ~/.pearrc; \
	\
# smoke test
	php --version

# chialab: from the source commit.
ADD --chmod=755 \
	$DOCKER_PHP_SCRIPTS/docker-php-ext-configure \
	$DOCKER_PHP_SCRIPTS/docker-php-ext-enable \
	$DOCKER_PHP_SCRIPTS/docker-php-ext-install \
	$DOCKER_PHP_SCRIPTS/docker-php-entrypoint \
	/usr/local/bin/

# sodium was built as a shared module (so that it can be replaced later if so desired), so let's enable it too (https://github.com/docker-library/php/issues/598)
RUN docker-php-ext-enable sodium

ENTRYPOINT ["docker-php-entrypoint"]
WORKDIR /var/www/html

RUN set -eux; \
	cd /usr/local/etc; \
	if [ -d php-fpm.d ]; then \
		# for some reason, upstream's php-fpm.conf.default has "include=NONE/etc/php-fpm.d/*.conf"
		sed 's!=NONE/!=!g' php-fpm.conf.default | tee php-fpm.conf > /dev/null; \
		cp php-fpm.d/www.conf.default php-fpm.d/www.conf; \
	else \
		# PHP 5.x doesn't use "include=" by default, so we'll create our own simple config that mimics PHP 7+ for consistency
		mkdir php-fpm.d; \
		cp php-fpm.conf.default php-fpm.d/www.conf; \
		{ \
			echo '[global]'; \
			echo 'include=etc/php-fpm.d/*.conf'; \
		} | tee php-fpm.conf; \
	fi; \
	{ \
		echo '[global]'; \
		echo 'error_log = /proc/self/fd/2'; \
		echo; echo '; https://github.com/docker-library/php/pull/725#issuecomment-443540114'; echo 'log_limit = 8192'; \
		echo; \
		echo '[www]'; \
		echo '; php-fpm closes STDOUT on startup, so sending logs to /proc/self/fd/1 does not work.'; \
		echo '; https://bugs.php.net/bug.php?id=73886'; \
		echo 'access.log = /proc/self/fd/2'; \
		echo; \
		echo 'clear_env = no'; \
		echo; \
		echo '; Ensure worker stdout and stderr are sent to the main error log.'; \
		echo 'catch_workers_output = yes'; \
		echo 'decorate_workers_output = no'; \
	} | tee php-fpm.d/docker.conf; \
	{ \
		echo '[global]'; \
		echo 'daemonize = no'; \
		echo; \
		echo '[www]'; \
		echo 'listen = 9000'; \
	} | tee php-fpm.d/zz-docker.conf; \
	mkdir -p "$PHP_INI_DIR/conf.d"; \
	{ \
		echo '; https://github.com/docker-library/php/issues/878#issuecomment-938595965'; \
		echo 'fastcgi.logging = Off'; \
	} > "$PHP_INI_DIR/conf.d/docker-fpm.ini"

# Override stop signal to stop process gracefully
# https://github.com/php/php-src/blob/17baa87faddc2550def3ae7314236826bc1b1398/sapi/fpm/php-fpm.8.in#L163
STOPSIGNAL SIGQUIT

EXPOSE 9000
CMD ["php-fpm"]