304 lines
8.4 KiB
Bash
304 lines
8.4 KiB
Bash
# This hook downloads the distfiles specified in a template by
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# the $distfiles variable and then verifies its sha256 checksum comparing
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# its value with the one stored in the $checksum variable.
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# Return the checksum of the contents of a tarball
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contents_cksum() {
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local curfile="$1" cursufx cksum
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case $curfile in
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*.tar.lzma) cursufx="txz";;
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*.tar.lz) cursufx="tlz";;
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*.tlz) cursufx="tlz";;
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*.tar.xz) cursufx="txz";;
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*.txz) cursufx="txz";;
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*.tar.bz2) cursufx="tbz";;
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*.tbz) cursufx="tbz";;
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*.tar.gz) cursufx="tgz";;
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*.tgz) cursufx="tgz";;
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*.gz) cursufx="gz";;
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*.bz2) cursufx="bz2";;
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*.tar) cursufx="tar";;
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*.zip) cursufx="zip";;
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*.rpm) cursufx="rpm";;
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*.patch) cursufx="txt";;
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*.diff) cursufx="txt";;
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*.txt) cursufx="txt";;
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*.7z) cursufx="7z";;
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*.gem) cursufx="gem";;
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*.crate) cursufx="crate";;
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*) msg_error "$pkgver: unknown distfile suffix for $curfile.\n";;
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esac
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case ${cursufx} in
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tar|txz|tbz|tlz|tgz|crate)
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cksum=$($XBPS_DIGEST_CMD <($TAR_CMD -x -O -f "$curfile"))
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if [ $? -ne 0 ]; then
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msg_error "$pkgver: extracting $curfile to pipe.\n"
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fi
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;;
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gz)
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cksum=$($XBPS_DIGEST_CMD <(gunzip -c "$curfile"))
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;;
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bz2)
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cksum=$($XBPS_DIGEST_CMD <(bunzip2 -c "$curfile"))
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;;
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zip)
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if command -v unzip &>/dev/null; then
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cksum=$($XBPS_DIGEST_CMD <(unzip -p "$curfile"))
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if [ $? -ne 0 ]; then
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msg_error "$pkgver: extracting $curfile to pipe.\n"
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fi
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else
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msg_error "$pkgver: cannot find unzip bin for extraction.\n"
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fi
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;;
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rpm)
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msg_error "$pkgver: contents checksum not support for rpm.\n"
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;;
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txt)
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cksum=$($XBPS_DIGEST_CMD "$curfile")
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;;
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7z)
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if command -v 7z &>/dev/null; then
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cksum=$($XBPS_DIGEST_CMD <(7z x -o "$curfile"))
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if [ $? -ne 0 ]; then
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msg_error "$pkgver: extracting $curfile to pipe.\n"
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fi
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else
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msg_error "$pkgver: cannot find 7z bin for extraction.\n"
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fi
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;;
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gem)
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cksum=$($XBPS_DIGEST_CMD <($TAR_CMD -x -O -f "$curfile" data.tar.gz | $TAR_CMD -xzO ))
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;;
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*)
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msg_error "$pkgver: cannot guess $curfile extract suffix. ($cursufx)\n"
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;;
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esac
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if [ -z "$cksum" ]; then
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msg_error "$pkgver: cannot find contents checksum for $curfile.\n"
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fi
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echo "$cksum"
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}
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# Verify the checksum for $curfile stored at $distfile and index $dfcount
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verify_cksum() {
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local curfile="$1" distfile="$2" cksum="$3" filesum
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# If the checksum starts with an commercial at (@) it is the contents checksum
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if [ "${cksum:0:1}" = "@" ]; then
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cksum=${cksum:1}
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msg_normal "$pkgver: verifying contents checksum for distfile '$curfile'... "
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filesum=$(contents_cksum "$curfile")
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if [ "${cksum}" != "$filesum" ]; then
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echo
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msg_red "SHA256 mismatch for '${curfile}:'\n@${filesum}\n"
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errors=$((errors + 1))
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else
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msg_normal_append "OK.\n"
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fi
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else
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msg_normal "$pkgver: verifying checksum for distfile '$curfile'... "
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filesum=$(${XBPS_DIGEST_CMD} "$distfile")
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if [ "$cksum" != "$filesum" ]; then
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echo
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msg_red "SHA256 mismatch for '${curfile}:'\n${filesum}\n"
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errors=$((errors + 1))
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else
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if [ ! -f "$XBPS_SRCDISTDIR/by_sha256/${cksum}_${curfile}" ]; then
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mkdir -p "$XBPS_SRCDISTDIR/by_sha256"
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ln -f "$distfile" "$XBPS_SRCDISTDIR/by_sha256/${cksum}_${curfile}"
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fi
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msg_normal_append "OK.\n"
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fi
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fi
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}
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# Link an existing cksum $distfile for $curfile at index $dfcount
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link_cksum() {
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local curfile="$1" distfile="$2" cksum="$3"
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if [ -n "$cksum" -a -f "$XBPS_SRCDISTDIR/by_sha256/${cksum}_${curfile}" ]; then
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ln -f "$XBPS_SRCDISTDIR/by_sha256/${cksum}_${curfile}" "$distfile"
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msg_normal "$pkgver: using known distfile $curfile.\n"
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return 0
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fi
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return 1
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}
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try_mirrors() {
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local curfile="$1" distfile="$2" cksum="$3" f="$4"
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local filesum basefile mirror path scheme good
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[ -z "$XBPS_DISTFILES_MIRROR" ] && return 1
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basefile="${f##*/}"
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for mirror in $XBPS_DISTFILES_MIRROR; do
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scheme="file"
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if [[ $mirror == *://* ]]; then
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scheme="${mirror%%:/*}"
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path="${mirror#${scheme}://}"
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else
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path="$mirror"
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fi
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if [ "$scheme" == "file" ]; then
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# Skip file:// mirror locations (/some/where or file:///some/where)
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# where the specified directory does not exist
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if [ ! -d "$path" ]; then
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msg_warn "$pkgver: mount point $path does not exist...\n"
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continue
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fi
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fi
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if [[ "$mirror" == *voidlinux* ]]; then
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# For distfiles.voidlinux.* append the subdirectory
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mirror="$mirror/$pkgname-$version"
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fi
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msg_normal "$pkgver: fetching distfile '$curfile' from mirror '$mirror'...\n"
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$fetch_cmd "$mirror/$curfile"
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# If basefile was not found, but a curfile file may exist, try to fetch it
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# if [ ! -f "$distfile" -a "$basefile" != "$curfile" ]; then
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# msg_normal "$pkgver: fetching distfile '$basefile' from mirror '$mirror'...\n"
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# $fetch_cmd "$mirror/$basefile"
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# fi
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[ ! -f "$distfile" ] && continue
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flock -n ${distfile}.part rm -f ${distfile}.part
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filesum=$(${XBPS_DIGEST_CMD} "$distfile")
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if [ "$cksum" == "$filesum" ]; then
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return 0
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fi
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msg_normal "$pkgver: checksum failed - removing '$curfile'...\n"
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rm -f ${distfile}
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done
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return 1
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}
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try_urls() {
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local curfile="$1"
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local good=
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for i in ${_file_idxs["$curfile"]}; do
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local cksum=${_checksums["$i"]}
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local url=${_distfiles["$i"]}
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# If distfile does not exist, download it from the original location.
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if [[ "$FTP_RETRIES" && "${url}" =~ ^ftp:// ]]; then
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max_retries="$FTP_RETRIES"
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else
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max_retries=1
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fi
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for retry in $(seq 1 1 $max_retries); do
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if [ ! -f "$distfile" ]; then
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if [ "$retry" == 1 ]; then
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msg_normal "$pkgver: fetching distfile '$curfile' from '$url'...\n"
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else
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msg_normal "$pkgver: fetch attempt $retry of $max_retries...\n"
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fi
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flock "${distfile}.part" $fetch_cmd "$url"
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fi
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done
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if [ ! -f "$distfile" ]; then
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continue
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fi
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# distfile downloaded, verify sha256 hash.
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flock -n "${distfile}.part" rm -f "${distfile}.part"
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verify_cksum "$curfile" "$distfile" "$cksum"
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return 0
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done
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return 1
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}
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hook() {
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local srcdir="$XBPS_SRCDISTDIR/$pkgname-$version"
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local dfcount=0 dfgood=0 errors=0 max_retries
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local -a _distfiles=($distfiles)
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local -a _checksums=($checksum)
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local -A _file_idxs
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# Create a map from target file to index in _distfiles/_checksums
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for i in ${!_distfiles[@]}; do
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f="${_distfiles[$i]}"
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curfile="${f#*>}"
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curfile="${curfile##*/}"
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_file_idxs["$curfile"]+=" $i"
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done
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if [[ ! -d "$srcdir" ]]; then
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mkdir -p -m775 "$srcdir"
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chgrp $(id -g) "$srcdir"
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fi
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cd $srcdir || msg_error "$pkgver: cannot change dir to $srcdir!\n"
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# Disable trap on ERR; the code is smart enough to report errors and abort.
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trap - ERR
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# Detect bsdtar and GNU tar (in that order of preference)
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TAR_CMD="$(command -v bsdtar)"
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if [[ -z "$TAR_CMD" ]]; then
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TAR_CMD="$(command -v tar)"
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fi
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# Detect distfiles with obsolete checksum and purge them from the cache
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for f in ${!_file_idxs[@]}; do
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distfile="$srcdir/$f"
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for i in ${_file_idxs["$f"]}; do
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if [[ -f $distfile ]]; then
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cksum=${_checksums["$i"]}
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if [[ ${cksum:0:1} = @ ]]; then
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cksum=${cksum:1}
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filesum=$(contents_cksum "$distfile")
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else
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filesum=$(${XBPS_DIGEST_CMD} "$distfile")
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fi
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if [[ $cksum = $filesum ]]; then
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dfgood=$((dfgood + 1))
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else
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inode=$(stat_inode "$distfile")
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msg_warn "$pkgver: wrong checksum found for ${curfile} - purging\n"
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find ${XBPS_SRCDISTDIR} -inum ${inode} -delete -print
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fi
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fi
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dfcount=$((dfcount + 1))
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done
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done
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# We're done, if all distfiles were found and had good checksums
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[[ $dfcount -eq $dfgood ]] && return
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# Download missing distfiles and verify their checksums
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for curfile in ${!_file_idxs[@]}; do
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distfile="$srcdir/$curfile"
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set -- ${_file_idxs["$curfile"]}
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i="$1"
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# If file lock cannot be acquired wait until it's available.
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while ! flock -w 1 "${distfile}.part" true; do
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msg_warn "$pkgver: ${curfile} is already being downloaded, waiting for 1s ...\n"
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done
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if [[ -f "$distfile" ]]; then
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continue
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fi
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# If distfile does not exist, try to link to it.
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if link_cksum "$curfile" "$distfile" "${_checksums[$i]}"; then
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continue
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fi
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# If distfile does not exist, download it from a mirror location.
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if try_mirrors "$curfile" "$distfile" "${_checksums[$i]}" "${_distfiles[$i]}"; then
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continue
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fi
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if ! try_urls "$curfile"; then
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msg_error "$pkgver: failed to fetch '$curfile'.\n"
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fi
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done
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unset TAR_CMD
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if [[ $errors -gt 0 ]]; then
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msg_error "$pkgver: couldn't verify distfiles, exiting...\n"
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fi
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}
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