sys-libs/zlib: Fix deflateParams() usage (bug #631550)

Package-Manager: Portage-2.3.8, Repoman-2.3.3

2 files changed, 193 insertions, 0 deletions

diff --git a/sys-libs/zlib/files/zlib-1.2.11-fix-deflateParams-usage.patch b/sys-libs/zlib/files/zlib-1.2.11-fix-deflateParams-usage.patch
new file mode 100644
index 000000000000..18764849b945
--- /dev/null
+++ b/sys-libs/zlib/files/zlib-1.2.11-fix-deflateParams-usage.patch
@@ -0,0 +1,67 @@
+From f9694097dd69354b03cb8af959094c7f260db0a1 Mon Sep 17 00:00:00 2001
+From: Mark Adler <madler@alumni.caltech.edu>
+Date: Mon, 16 Jan 2017 09:49:35 -0800
+Subject: [PATCH] Permit a deflateParams() parameter change as soon as
+ possible.
+
+This commit allows a parameter change even if the input data has
+not all been compressed and copied to the application output
+buffer, so long as all of the input data has been compressed to
+the internal pending output buffer. This also allows an immediate
+deflateParams change so long as there have been no deflate calls
+since initialization or reset.
+---
+ deflate.c |  6 +++---
+ zlib.h    | 11 ++++++-----
+ 2 files changed, 9 insertions(+), 8 deletions(-)
+
+diff --git a/deflate.c b/deflate.c
+index b63311a5..20bda4f6 100644
+--- a/deflate.c
++++ b/deflate.c
+@@ -494,7 +494,7 @@ int ZEXPORT deflateResetKeep (strm)
+         s->wrap == 2 ? crc32(0L, Z_NULL, 0) :
+ #endif
+         adler32(0L, Z_NULL, 0);
+-    s->last_flush = Z_NO_FLUSH;
++    s->last_flush = -2;
+ 
+     _tr_init(s);
+ 
+@@ -587,12 +587,12 @@ int ZEXPORT deflateParams(strm, level, strategy)
+     func = configuration_table[s->level].func;
+ 
+     if ((strategy != s->strategy || func != configuration_table[level].func) &&
+-        s->high_water) {
++        s->last_flush != -2) {
+         /* Flush the last buffer: */
+         int err = deflate(strm, Z_BLOCK);
+         if (err == Z_STREAM_ERROR)
+             return err;
+-        if (strm->avail_out == 0)
++        if (strm->avail_in || (s->strstart - s->block_start) + s->lookahead)
+             return Z_BUF_ERROR;
+     }
+     if (s->level != level) {
+diff --git a/zlib.h b/zlib.h
+index 5daf4f28..577d81e3 100644
+--- a/zlib.h
++++ b/zlib.h
+@@ -712,11 +712,12 @@ ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
+    used to switch between compression and straight copy of the input data, or
+    to switch to a different kind of input data requiring a different strategy.
+    If the compression approach (which is a function of the level) or the
+-   strategy is changed, and if any input has been consumed in a previous
+-   deflate() call, then the input available so far is compressed with the old
+-   level and strategy using deflate(strm, Z_BLOCK).  There are three approaches
+-   for the compression levels 0, 1..3, and 4..9 respectively.  The new level
+-   and strategy will take effect at the next call of deflate().
++   strategy is changed, and if there have been any deflate() calls since the
++   state was initialized or reset, then the input available so far is
++   compressed with the old level and strategy using deflate(strm, Z_BLOCK).
++   There are three approaches for the compression levels 0, 1..3, and 4..9
++   respectively.  The new level and strategy will take effect at the next call
++   of deflate().
+ 
+      If a deflate(strm, Z_BLOCK) is performed by deflateParams(), and it does
+    not have enough output space to complete, then the parameter change will not
diff --git a/sys-libs/zlib/zlib-1.2.11-r1.ebuild b/sys-libs/zlib/zlib-1.2.11-r1.ebuild
new file mode 100644
index 000000000000..c2edb5daec92
--- /dev/null
+++ b/sys-libs/zlib/zlib-1.2.11-r1.ebuild
@@ -0,0 +1,126 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=5
+AUTOTOOLS_AUTO_DEPEND="no"
+
+inherit autotools toolchain-funcs multilib multilib-minimal
+
+DESCRIPTION="Standard (de)compression library"
+HOMEPAGE="https://zlib.net/"
+SRC_URI="https://zlib.net/${P}.tar.gz
+	http://www.gzip.org/zlib/${P}.tar.gz
+	http://www.zlib.net/current/beta/${P}.tar.gz"
+
+LICENSE="ZLIB"
+SLOT="0/1" # subslot = SONAME
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~amd64-fbsd ~sparc-fbsd ~x86-fbsd"
+IUSE="minizip static-libs"
+
+DEPEND="minizip? ( ${AUTOTOOLS_DEPEND} )"
+RDEPEND="abi_x86_32? (
+		!<=app-emulation/emul-linux-x86-baselibs-20130224
+		!app-emulation/emul-linux-x86-baselibs[-abi_x86_32(-)]
+	)
+	!<dev-libs/libxml2-2.7.7" #309623
+
+src_prepare() {
+	epatch "${FILESDIR}"/${PN}-1.2.11-fix-deflateParams-usage.patch
+
+	if use minizip ; then
+		cd contrib/minizip || die
+		eautoreconf
+	fi
+
+	case ${CHOST} in
+	*-mingw*|mingw*)
+		# uses preconfigured Makefile rather than configure script
+		multilib_copy_sources
+		;;
+	esac
+}
+
+echoit() { echo "$@"; "$@"; }
+
+multilib_src_configure() {
+	case ${CHOST} in
+	*-mingw*|mingw*)
+		;;
+	*)      # not an autoconf script, so can't use econf
+		local uname=$("${EPREFIX}"/usr/share/gnuconfig/config.sub "${CHOST}" | cut -d- -f3) #347167
+		echoit "${S}"/configure \
+			--shared \
+			--prefix="${EPREFIX}/usr" \
+			--libdir="${EPREFIX}/usr/$(get_libdir)" \
+			${uname:+--uname=${uname}} \
+			|| die
+		;;
+	esac
+
+	if use minizip ; then
+		local minizipdir="contrib/minizip"
+		mkdir -p "${BUILD_DIR}/${minizipdir}" || die
+		cd ${minizipdir} || die
+		ECONF_SOURCE="${S}/${minizipdir}" \
+		econf $(use_enable static-libs static)
+	fi
+}
+
+multilib_src_compile() {
+	case ${CHOST} in
+	*-mingw*|mingw*)
+		emake -f win32/Makefile.gcc STRIP=true PREFIX=${CHOST}-
+		sed \
+			-e 's|@prefix@|/usr|g' \
+			-e 's|@exec_prefix@|${prefix}|g' \
+			-e 's|@libdir@|${exec_prefix}/'$(get_libdir)'|g' \
+			-e 's|@sharedlibdir@|${exec_prefix}/'$(get_libdir)'|g' \
+			-e 's|@includedir@|${prefix}/include|g' \
+			-e 's|@VERSION@|'${PV}'|g' \
+			zlib.pc.in > zlib.pc || die
+		;;
+	*)
+		emake
+		;;
+	esac
+	use minizip && emake -C contrib/minizip
+}
+
+sed_macros() {
+	# clean up namespace a little #383179
+	# we do it here so we only have to tweak 2 files
+	sed -i -r 's:\<(O[FN])\>:_Z_\1:g' "$@" || die
+}
+
+multilib_src_install() {
+	case ${CHOST} in
+	*-mingw*|mingw*)
+		emake -f win32/Makefile.gcc install \
+			BINARY_PATH="${ED}/usr/bin" \
+			LIBRARY_PATH="${ED}/usr/$(get_libdir)" \
+			INCLUDE_PATH="${ED}/usr/include" \
+			SHARED_MODE=1
+		# overwrites zlib.pc created from win32/Makefile.gcc #620136
+		insinto /usr/$(get_libdir)/pkgconfig
+		doins zlib.pc
+		;;
+
+	*)
+		emake install DESTDIR="${D}" LDCONFIG=:
+		gen_usr_ldscript -a z
+		;;
+	esac
+	sed_macros "${ED}"/usr/include/*.h
+
+	if use minizip ; then
+		emake -C contrib/minizip install DESTDIR="${D}"
+		sed_macros "${ED}"/usr/include/minizip/*.h
+	fi
+
+	use static-libs || rm -f "${ED}"/usr/$(get_libdir)/lib{z,minizip}.{a,la} #419645
+}
+
+multilib_src_install_all() {
+	dodoc FAQ README ChangeLog doc/*.txt
+	use minizip && dodoc contrib/minizip/*.txt
+}