--- /dev/null
+# Copyright 1999-2018 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+if [[ ${PV} = *9999 ]]; then
+ EGIT_REPO_URI="https://github.com/Exiv2/exiv2.git"
+ inherit git-r3
+else
+ SRC_URI="http://exiv2.dyndns.org/builds/${P}-Source.tar.gz"
+ KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~amd64-fbsd ~x86-fbsd ~amd64-linux ~x86-linux ~x64-solaris ~x86-solaris"
+fi
+
+PYTHON_COMPAT=( python2_7 python3_{5,6,7} )
+inherit cmake-multilib python-any-r1
+
+DESCRIPTION="EXIF, IPTC and XMP metadata C++ library and command line utility"
+HOMEPAGE="http://www.exiv2.org/"
+
+LICENSE="GPL-2"
+SLOT="0/27"
+IUSE="doc examples nls +png webready +xmp"
+
+RDEPEND="
+ >=virtual/libiconv-0-r1[${MULTILIB_USEDEP}]
+ nls? ( >=virtual/libintl-0-r1[${MULTILIB_USEDEP}] )
+ png? ( sys-libs/zlib[${MULTILIB_USEDEP}] )
+ webready? (
+ net-libs/libssh[${MULTILIB_USEDEP}]
+ net-misc/curl[${MULTILIB_USEDEP}]
+ )
+ xmp? ( dev-libs/expat[${MULTILIB_USEDEP}] )
+"
+DEPEND="${RDEPEND}
+ doc? (
+ ${PYTHON_DEPS}
+ app-doc/doxygen
+ dev-libs/libxslt
+ media-gfx/graphviz
+ virtual/pkgconfig
+ )
+ nls? ( sys-devel/gettext )
+"
+
+DOCS=( README.md doc/ChangeLog doc/cmd.txt )
+
+S="${S}-Source"
+
+PATCHES=(
+ # pending upstream
+ "${FILESDIR}"/${P}-png-broken-icc-profile.patch
+)
+
+pkg_setup() {
+ use doc && python-any-r1_pkg_setup
+}
+
+src_prepare() {
+ # FIXME @upstream:
+ einfo "Converting doc/cmd.txt to UTF-8"
+ iconv -f LATIN1 -t UTF-8 doc/cmd.txt > doc/cmd.txt.tmp || die
+ mv -f doc/cmd.txt.tmp doc/cmd.txt || die
+
+ if use doc; then
+ einfo "Updating doxygen config"
+ doxygen &>/dev/null -u config/Doxyfile || die
+ fi
+
+ cmake-utils_src_prepare
+}
+
+multilib_src_configure() {
+ local mycmakeargs=(
+ -DEXIV2_BUILD_SAMPLES=NO
+ -DEXIV2_BUILD_PO=$(usex nls)
+ -DEXIV2_ENABLE_NLS=$(usex nls)
+ -DEXIV2_ENABLE_PNG=$(usex png)
+ -DEXIV2_ENABLE_CURL=$(usex webready)
+ -DEXIV2_ENABLE_SSH=$(usex webready)
+ -DEXIV2_ENABLE_WEBREADY=$(usex webready)
+ -DEXIV2_ENABLE_XMP=$(usex xmp)
+ $(multilib_is_native_abi || echo -DEXIV2_BUILD_EXIV2_COMMAND=NO)
+ )
+
+ cmake-utils_src_configure
+}
+
+multilib_src_compile() {
+ cmake-utils_src_compile
+
+ if multilib_is_native_abi; then
+ use doc && emake -j1 doc
+ fi
+}
+
+multilib_src_install_all() {
+ use xmp && DOCS+=( doc/{COPYING-XMPSDK,README-XMP,cmdxmp.txt} )
+ use doc && HTML_DOCS=( "${S}"/doc/html/. )
+
+ einstalldocs
+ find "${D}" -name '*.la' -delete || die
+
+ if use examples; then
+ docinto examples
+ dodoc samples/*.cpp
+ fi
+}
--- /dev/null
+diff --git a/src/pngimage.cpp b/src/pngimage.cpp
+index 90844d09..b5b0cd24 100644
+--- a/src/pngimage.cpp
++++ b/src/pngimage.cpp
+@@ -501,7 +501,20 @@ namespace Exiv2 {
+ }
+ else if (!memcmp(cheaderBuf.pData_ + 4, "iCCP", 4))
+ {
+- zlibToDataBuf(cdataBuf.pData_ +12+1,dataOffset-13,iccProfile_); // +1 = 'compressed' flag
++ // The ICC profile name can vary from 1-79 characters.
++ uint32_t iccOffset = 0;
++ while (iccOffset < 80 && iccOffset < dataOffset) {
++
++ const byte* profileName = cdataBuf.pData_ + iccOffset;
++ ++iccOffset;
++
++ if (*profileName == 0x00)
++ break;
++ }
++
++ ++iccOffset; // +1 = 'compressed' flag
++
++ zlibToDataBuf(cdataBuf.pData_ +iccOffset,dataOffset-iccOffset,iccProfile_);
+ #ifdef DEBUG
+ std::cout << "Exiv2::PngImage::readMetadata: Found iCCP chunk length: " << dataOffset << std::endl;
+ std::cout << "Exiv2::PngImage::readMetadata: iccProfile.size_ : " << iccProfile_.size_ << std::endl;
+@@ -662,6 +675,7 @@ namespace Exiv2 {
+
+ // calculate CRC
+ uLong tmp = crc32(0L, Z_NULL, 0);
++ tmp = crc32(tmp, (const Bytef*)type ,typeLen);
+ tmp = crc32(tmp, (const Bytef*)header ,headerLen);
+ tmp = crc32(tmp, (const Bytef*)compressed.pData_,compressed.size_);
+ byte crc[4];