dev-tex/tex4ht: Fix segmentation fault in tex4ht binary

Update to EAPI 8.

Closes: https://bugs.gentoo.org/915782
Signed-off-by: Ulrich Müller <ulm@gentoo.org>

2 files changed, 170 insertions, 0 deletions

diff --git a/dev-tex/tex4ht/files/tex4ht-invalid-read.patch b/dev-tex/tex4ht/files/tex4ht-invalid-read.patch
new file mode 100644
index 000000000000..0b784f338d2c
--- /dev/null
+++ b/dev-tex/tex4ht/files/tex4ht-invalid-read.patch
@@ -0,0 +1,35 @@
+Avoid invalid read and uninitialized comparisons
+https://bugs.gentoo.org/915782
+https://puszcza.gnu.org.ua/bugs/?611
+
+This backports the following upstream commits:
+
+r1387
+Author: karl
+Date: Thu Oct 12 16:10:29 2023 UTC
+avoid negative index into font_tbl
+
+r1391
+Author: karl
+Date: Fri Oct 13 22:34:24 2023 UTC
+zero htf_4hf array to avoid uninitialized reads
+
+--- tex4ht-1.0.2009_06_11_1038/src/tex4ht.c
++++ tex4ht-1.0.2009_06_11_1038/src/tex4ht.c
+@@ -7039,6 +7039,7 @@
+ 
+ max_htf_4hf_n = 256;
+ htf_4hf = m_alloc(struct htf_4hf_rec, 256);
++memset (htf_4hf, 0, 256 * sizeof (struct htf_4hf_rec));
+ 
+ 
+       
+@@ -8738,7 +8739,7 @@
+ 
+    
+ if( span_on && !in_span_ch  && !ignore_chs && !in_accenting
+-            && (default_font != font_tbl[cur_fnt].num) ){
++            && cur_fnt >= 0 && (default_font != font_tbl[cur_fnt].num) ){
+   if(  (ch < 137) && (ch != 
+ 132 
+ ) ){
diff --git a/dev-tex/tex4ht/tex4ht-20090611_p1038_p20210603-r1.ebuild b/dev-tex/tex4ht/tex4ht-20090611_p1038_p20210603-r1.ebuild
new file mode 100644
index 000000000000..e703b4202c48
--- /dev/null
+++ b/dev-tex/tex4ht/tex4ht-20090611_p1038_p20210603-r1.ebuild
@@ -0,0 +1,135 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit latex-package toolchain-funcs java-pkg-opt-2 flag-o-matic readme.gentoo-r1
+
+# tex4ht-20050331_p2350 -> tex4ht-1.0.2005_03_31_2350
+MY_P="${PN}-1.0.${PV:0:4}_${PV:4:2}_${PV:6:2}_$(ver_cut 3)"
+
+# from https://mirrors.ctan.org/systems/texlive/tlnet/archive/tex4ht.tar.xz
+MY_P_TEXLIVE="${PN}-texlive-$(ver_cut 5)"
+
+DESCRIPTION="Converts (La)TeX to (X)HTML, XML and OO.org"
+HOMEPAGE="
+	https://tug.org/tex4ht/
+	https://puszcza.gnu.org.ua/projects/tex4ht/
+"
+SRC_URI="http://www.cse.ohio-state.edu/~gurari/TeX4ht/fix/${MY_P}.tar.gz
+	https://dev.gentoo.org/~ulm/distfiles/${MY_P_TEXLIVE}.tar.xz
+	doc? ( https://dev.gentoo.org/~ulm/distfiles/${MY_P_TEXLIVE}.doc.tar.xz )"
+S="${WORKDIR}/${MY_P}"
+
+LICENSE="LPPL-1.2"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~x64-macos"
+IUSE="doc java"
+
+RDEPEND="app-text/ghostscript-gpl
+	media-gfx/imagemagick
+	dev-libs/kpathsea
+	java? ( >=virtual/jre-1.8:* )"
+
+DEPEND="dev-libs/kpathsea
+	java? ( >=virtual/jdk-1.8:* )"
+
+BDEPEND="virtual/pkgconfig"
+
+PATCHES=( "${FILESDIR}/${PN}-invalid-read.patch" )
+
+src_prepare() {
+	cp -a "${WORKDIR}/texmf-dist/"* texmf/ || die
+	default
+	cd "${S}/texmf/tex4ht/base/unix" || die
+	sed -i \
+		-e "s#~/tex4ht.dir#${EPREFIX}/usr/share#" \
+		-e "s#tpath/tex/texmf/fonts/tfm/!#t${EPREFIX}/usr/share/texmf-dist/fonts/tfm/!\nt${EPREFIX}/usr/local/share/texmf/fonts/tfm/!\nt${EPREFIX}/var/cache/fonts/tfm/!\nt${EPREFIX}${TEXMF}/fonts/tfm/!#" \
+		-e "s#%%~#${EPREFIX}${TEXMF}#g" \
+		-e "s#/usr/share/texmf/#${EPREFIX}${TEXMF}/#" \
+		tex4ht.env \
+		|| die "sed of tex4ht.env failed"
+
+	einfo "Removing precompiled java stuff"
+	find "${S}" '(' -name '*.class' -o -name '*.jar' ')' -print -delete || die
+}
+
+src_compile() {
+	has_version '>=dev-libs/kpathsea-6.2.1' \
+		&& append-cppflags "$($(tc-getPKG_CONFIG) --cflags kpathsea)"
+
+	cd "${S}/src" || die
+	einfo "Compiling postprocessor sources..."
+	for f in tex4ht t4ht; do
+		$(tc-getCC) ${CPPFLAGS} ${CFLAGS} ${LDFLAGS} -o $f $f.c \
+			-DENVFILE="\"${EPREFIX}${TEXMF}/tex4ht/base/tex4ht.env\"" \
+			-DHAVE_DIRENT_H -DKPATHSEA -lkpathsea \
+			|| die "Compiling $f failed"
+	done
+	if use java; then
+		einfo "Compiling java files..."
+		cd java || die
+		ejavac *.java */*.java */*/*.java -d ../../texmf/tex4ht/bin
+		cd "${S}/texmf/tex4ht/bin" || die
+		# Create the jar needed by oolatex
+		jar -cf "${S}/${PN}.jar" * || die "failed to create jar"
+	fi
+}
+
+src_install() {
+	# install the binaries
+	dobin "${S}/src/tex4ht" "${S}/src/t4ht"
+	# install the scripts
+	if ! use java; then
+		rm -f "${S}"/bin/unix/oo* || die
+		rm -f "${S}"/bin/unix/jh* || die
+	fi
+	dobin "${S}"/bin/unix/mk4ht
+
+	# install the .4ht scripts
+	insinto ${TEXMF}/tex/generic/tex4ht
+	doins "${S}"/texmf/tex/generic/tex4ht/*
+
+	if use doc; then
+		# install the documentation
+		insinto ${TEXMF}/doc/generic/tex4ht
+		doins "${S}"/texmf/doc/generic/tex4ht/*
+	fi
+
+	# install the special htf fonts
+	insinto ${TEXMF}/tex4ht
+	doins -r "${S}/texmf/tex4ht/ht-fonts"
+
+	if use java; then
+		# install the java files
+		doins -r "${S}/texmf/tex4ht/bin"
+		java-pkg_jarinto ${TEXMF}/tex4ht/bin
+		java-pkg_dojar "${S}/${PN}.jar"
+	fi
+
+	# install the .4xt files
+	doins -r "${S}/texmf/tex4ht/xtpipes"
+
+	# install the env file
+	insinto ${TEXMF}/tex4ht/base
+	newins "${S}/texmf/tex4ht/base/unix/tex4ht.env" tex4ht.env
+
+	insinto /etc/texmf/texmf.d
+	doins "${FILESDIR}/50tex4ht.cnf"
+
+	insinto ${TEXMF}/tex/generic/${PN}
+	insopts -m755
+	doins "${S}"/bin/ht/unix/*
+
+	local DOC_CONTENTS="In order to avoid collisions with multiple packages,
+		we are not installing the scripts in /usr/bin any more.
+		If you want to use, say, htlatex, you can use 'mk4ht htlatex file'."
+	use java || DOC_CONTENTS+="\n\nODF converters (oolatex & friends)
+		require the java use flag."
+	readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	latex-package_pkg_postinst
+	readme.gentoo_print_elog
+}