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# Generate a control directory with a control file and scripts
#
# Copyright (C) 2012, 2019 Patrick McDermott
#
# This file is part of opkbuild.
#
# opkbuild is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# opkbuild is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with opkbuild. If not, see <http://www.gnu.org/licenses/>.
set -eu
gen_control()
{
local binary="${1}"
local version="${2}"
local arch="${3}"
local plat="${4}"
local desc="${5}"
local gen_rel="${6}"
shift 6
local inst_size=
local sizes=
local size=
local name=
local value=
local homepage=
# Calculate installed size.
# Don't use du, since that considers the allocated size of files,
# symbolic links, and directories (i.e. actual file sizes plus the
# filesystem overhead on the build system).
# See the following for more information:
# <http://pubs.opengroup.org/onlinepubs/9699919799/utilities/du.html>
# <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=630533>
# <https://www.gnu.org/software/coreutils/manual/html_node/du-invocation.html>
inst_size=0
if [ -d "${binary}.data" ]; then
sizes="$(find "${binary}.data" -type f -exec wc -c '{}' ';' | \
cut -d ' ' -f 1)"
for size in ${sizes}; do
inst_size=$((${inst_size} + ${size}))
done
fi
# Convert bytes to kibibytes and round up.
# Note: There is an inconsistency between the Debian Policy Manual and
# opkg in the units of this field. Debian Policy defines this field in
# units of kibibytes:
# The disk space is given as the integer value of the estimated
# installed size in bytes, divided by 1024 and rounded up.
# However, opkg apparently attempts to convert this value from bytes to
# kibibytes in its determination of whether the package's data will fit
# on the system:
# pkg_size_kbs = (pkg->installed_size + 1023)/1024;
# (from libopkg/opkg_install.c line 245)
# (still in upstream as of 2019-02-25, libopkg/opkg_install.c:118)
# In other words, if a package declares an installed size of 10 KiB,
# opkg checks for 10 MiB of available space.
# TODO: Further investigate opkg's disk space calculation and, if
# necessary, patch opkg and submit a bug report.
inst_size=$(((${inst_size} + 1023) / 1024))
mkdir -p -- "${binary}.control"
cat >"${binary}.control/control" <<-EOF
Package: ${binary}
Source: ${OPK_SOURCE}
Version: ${version}
Architecture: ${arch}
Platform: ${plat}
Maintainer: $(ob_get_source_parameter 'Maintainer' | \
tr '\n' ' ')
EOF
if ${gen_rel}; then
for name in Essential Depends Recommends Suggests Pre-Depends \
Conflicts Provides Replaces; do
value="$(ob_get_binary_parameter "${binary}" "${name}")"
if [ -z "${value}" ]; then
continue
fi
case "${name}" in
'Essential')
;;
'Depends' | 'Recommends' | \
'Suggests' | 'Pre-Depends')
value="$(ob_reduce_deps \
-a "${OPK_HOST_ARCH}" \
-p "${OPK_HOST_PLAT}" \
-- "${value}")"
value="$(ob_substvars "${value}" \
"${binary}")"
;;
'Conflicts' | 'Provides' | 'Replaces')
value="$(ob_reduce_deps \
-a "${OPK_HOST_ARCH}" \
-p "${OPK_HOST_PLAT}" \
-u -- "${value}")"
value="$(ob_substvars "${value}" \
"${binary}")"
;;
esac
printf '%s: %s\n' "${name}" "${value}" | \
sed 's/[, ]*$//' \
>>"${binary}.control/control"
done
fi
cat >>"${binary}.control/control" <<-EOF
Installed-Size: ${inst_size}
Description:$(printf '%s' "${desc}" | sed 's/^/ /')
EOF
homepage="$(ob_get_source_parameter 'Homepage')"
if [ -n "${homepage}" ]; then
printf '%s: %s\n' 'Homepage' "${homepage}" \
>>"${binary}.control/control"
fi
return 0
}
install_maintainer_scripts()
{
local binary="${1}"
shift 1
local script=
local target=
for script in preinst postinst prerm postrm; do
if [ -L "../${binary}.pkg/${script}" ]; then
target="$(ls -l "../${binary}.pkg/${script}")"
target="${target#* -> }"
ln -s -- "${target}" "${binary}.control/${script}"
elif [ -r "../${binary}.pkg/${script}" ]; then
cp "../${binary}.pkg/${script}" \
"${binary}.control/${script}"
chmod 755 "${binary}.control/${script}"
fi
done
return 0
}
gen_conffiles()
{
local binary="${1}"
shift 1
if [ -d "${binary}.data/etc" ]; then
find "${binary}.data/etc" -type f | sed "s@^${binary}.data@@" \
>"${binary}.control/conffiles"
if [ -z "$(head -n 1 "${binary}.control/conffiles")" ]; then
rm -f -- "${binary}.control/conffiles"
else
chmod 644 "${binary}.control/conffiles"
fi
fi
return 0
}
gen_md5sums()
{
local binary="${1}"
shift 1
local has_data=
local sum=
local file=
has_data=false
exec 3>"${binary}.control/md5sums"
while read -r sum file; do
case "${file}" in '-') continue;; esac
file="${file#${binary}.data}"
printf '%s %s\n' "${sum}" "${file}" >&3
has_data=true
done <<-EOF
$(find "${binary}.data" -type f 2>/dev/null | sort | \
xargs md5sum)
EOF
exec 3>&-
if ! ${has_data}; then
rm -f -- "${binary}.control/md5sums"
else
chmod 644 "${binary}.control/md5sums"
fi
return 0
}
main()
{
local pkg=
local arch=
local plat=
local desc=
if ! ob_set_text_domain 'opkbuild'; then
printf '%s: Error: Failed to load locale messages\n' \
"${0##*/}" >&2
return 1
fi
ob_init_package '..' || return 1
if [ x"${OB_DO_SOURCE:+set}" = x'set' ]; then
ob_info "$(ob_get_msg 'gen_control')" "src-${OPK_SOURCE}"
gen_control "src-${OPK_SOURCE}" "${OPK_SOURCE_VERSION}" \
'src' 'all' "${OPK_SOURCE} source package" 'false'
gen_md5sums "src-${OPK_SOURCE}"
else
for pkg in ${OPK_PACKAGES_REDUCED}; do
ob_info "$(ob_get_msg 'gen_control')" "${pkg}"
ob_set_package_substvars "${pkg}"
arch="$(ob_get_binary_parameter "${pkg}" \
'Architecture')"
[ x"${arch}" != x'all' ] && arch="${OPK_HOST_ARCH}"
plat="$(ob_get_binary_parameter "${pkg}" 'Platform')"
[ x"${plat}" != x'all' ] && plat="${OPK_HOST_PLAT}"
desc="$(ob_get_binary_parameter "${pkg}" 'Description')"
desc="$(ob_substvars "${desc}" "${pkg}")"
gen_control "${pkg}" "${OPK_BINARY_VERSION}" \
"${arch}" "${plat}" "${desc}" 'true'
install_maintainer_scripts "${pkg}"
gen_conffiles "${pkg}"
gen_md5sums "${pkg}"
done
fi
return 0
}
|
