void-packages/common/hooks/do-fetch/00-distfiles.sh

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# This hook downloads the distfiles specified in a template by
# the $distfiles variable and then verifies its sha256 checksum comparing
# its value with the one stored in the $checksum variable.
verify_cksum() {
local curfile="$1" distfile="$2" dfcount="$3" filesum ckcount cksum found i
ckcount=0
for i in ${checksum}; do
if [ $dfcount -eq $ckcount -a -n "$i" ]; then
cksum=$i
found=yes
break
fi
ckcount=$(($ckcount + 1))
done
if [ -z $found ]; then
msg_error "$pkgver: cannot find checksum for $curfile.\n"
fi
msg_normal "$pkgver: verifying checksum for distfile '$curfile'... "
filesum=$(${XBPS_DIGEST_CMD} $distfile)
if [ "$cksum" != "$filesum" ]; then
echo
msg_red "SHA256 mismatch for '$curfile:'\n$filesum\n"
errors=$(($errors + 1))
else
msg_normal_append "OK.\n"
fi
}
hook() {
local srcdir="$XBPS_SRCDISTDIR/$pkgname-$version"
local dfcount=0 errors=0
if [ ! -d "$srcdir" ]; then
mkdir -p -m775 "$srcdir"
chgrp $(id -g) "$srcdir"
fi
cd $srcdir || msg_error "$pkgver: cannot change dir to $srcdir!\n"
# Disable trap on ERR; the code is smart enough to report errors and abort.
trap - ERR
for f in ${distfiles}; do
curfile=$(basename "${f#*>}")
distfile="$srcdir/$curfile"
# If file lock cannot be acquired wait until it's available.
while true; do
flock -w 1 ${distfile}.part true
[ $? -eq 0 ] && break
msg_warn "$pkgver: ${curfile} is being already downloaded, waiting for 1s ...\n"
done
# If distfile does not exist download it.
if [ ! -f "$distfile" ]; then
msg_normal "$pkgver: fetching distfile '$curfile'...\n"
flock "${distfile}.part" $XBPS_FETCH_CMD "$f"
if [ ! -f "$distfile" ]; then
msg_error "$pkgver: failed to fetch $curfile.\n"
fi
fi
# distfile downloaded, verify sha256 hash.
flock -n ${distfile}.part rm -f ${distfile}.part
verify_cksum $curfile $distfile $dfcount
dfcount=$(($dfcount + 1))
done
if [ $errors -gt 0 ]; then
msg_error "$pkgver: couldn't verify distfiles, exiting...\n"
fi
}