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https://github.com/ipfs/kubo.git
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864e305557
Right now bin/dist_get trusts whatever DNS resolver is active. This change enables it to verify what it downloads. Verification itself remains TODO. This will work best with a unixfs-hash tool which is TODO too. It'd just do the equivalent of `ipfs add -n -r <dirOrFile>`. License: MIT Signed-off-by: Lars Gierth <larsg@systemli.org>
152 lines
3.3 KiB
Bash
Executable File
152 lines
3.3 KiB
Bash
Executable File
#!/bin/sh
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die() {
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echo "$@" >&2
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exit 1
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}
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have_binary() {
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type "$1" > /dev/null 2> /dev/null
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}
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check_writeable() {
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printf "" > "$1" && rm "$1"
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}
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download() {
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dl_url="$1"
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dl_output="$2"
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test "$#" -eq "2" || die "download requires exactly two arguments, was given $@"
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if ! check_writeable "$dl_output"; then
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die "download error: cannot write to $dl_output"
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fi
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if have_binary wget; then
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printf '==> Using wget to download "%s" to "%s"\n' "$dl_url" "$dl_output"
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wget "$dl_url" -O "$dl_output" || return
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elif have_binary curl; then
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printf '==> Using curl to download "%s" to "%s"\n' "$dl_url" "$dl_output"
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curl --silent "$dl_url" > "$dl_output" || return
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elif have_binary fetch; then
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printf '==> Using fetch to download "%s" to "%s"\n' "$dl_url" "$dl_output"
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fetch "$dl_url" -o "$dl_output" || return
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else
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die "no binary found to download $dl_url. exiting."
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fi
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echo "==> download complete!"
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}
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unarchive() {
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ua_archivetype="$1"
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ua_infile="$2"
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ua_outfile="$3"
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ua_distname="$4"
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if ! check_writeable "$ua_outfile"; then
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die "unarchive error: cannot write to $ua_outfile"
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fi
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case "$ua_archivetype" in
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tar.gz)
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if have_binary tar; then
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echo "==> using 'tar' to extract binary from archive"
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cat "$ua_infile" | tar -O -z -x "$ua_distname/$ua_distname" > "$ua_outfile"
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else
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die "no binary on system for extracting tar files"
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fi
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;;
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zip)
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if have_binary unzip; then
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echo "==> using 'unzip' to extract binary from archive"
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unzip -p "$ua_infile" "$ua_distname/$ua_distname" > "$ua_outfile"
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else
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die "no installed method for extracting .zip archives"
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fi
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;;
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*)
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die "unrecognized archive type '$ua_archivetype'"
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esac
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chmod +x "$ua_outfile"
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}
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get_go_vars() {
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if [ ! -z "$GOOS" ] && [ ! -z "$GOARCH" ]; then
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printf "%s-%s" "$GOOS" "$GOARCH"
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fi
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if have_binary go; then
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printf "%s-%s" "$(go env GOOS)" "$(go env GOARCH)"
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else
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die "no way of determining system GOOS and GOARCH\nPlease manually set GOOS and GOARCH then retry."
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fi
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}
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mkurl() {
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m_root="$1"
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m_name="$2"
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m_vers="$3"
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m_archive="$4"
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m_govars=$(get_go_vars) || die "could not get go env vars"
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echo "https://ipfs.io$m_root/$m_name/$m_vers/${m_name}_${m_vers}_$m_govars.$m_archive"
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}
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distroot="$1"
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distname="$2"
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outpath="$3"
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version="$4"
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if [ -z "$distroot" ] || [ -z "$distname" ] || [ -z "$outpath" ] || [ -z "$version" ]; then
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die "usage: dist_get <distroot> <distname> <outpath> <version>"
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fi
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case $version in
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v*)
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# correct input
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;;
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*)
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echo "invalid version '$version'" >&2
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die "versions must begin with 'v', for example: v0.4.0"
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;;
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esac
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# TODO: don't depend on the go tool being installed to detect this
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goenv=$(get_go_vars) || die "could not get go env vars"
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case $goenv in
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linux-*)
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archive="tar.gz"
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;;
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darwin-*)
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archive="tar.gz"
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;;
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windows-*)
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archive="zip"
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;;
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freebsd-*)
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archive="tar.gz"
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;;
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*)
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echo "unrecognized system environment: $goenv" >&2
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die "currently only linux, darwin, windows and freebsd are supported by this script"
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esac
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mkdir -p bin/tmp
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url=$(mkurl "$distroot" "$distname" "$version" "$archive")
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tmpfi="bin/tmp/$distname.$archive"
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download "$url" "$tmpfi"
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if [ $? -ne 0 ]; then
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die "failed to download $url to $tmpfi"
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fi
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unarchive "$archive" "$tmpfi" "$outpath" "$distname"
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if [ $? -ne 0 ]; then
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die "failed to extract archive $tmpfi"
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fi
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