| 1 | #!/bin/sh |
| 2 | |
| 3 | GOCC=${GOCC=go} |
| 4 | |
| 5 | die() { |
| 6 | echo "$@" >&2 |
| 7 | exit 1 |
| 8 | } |
| 9 | |
| 10 | have_binary() { |
| 11 | type "$1" > /dev/null 2> /dev/null |
| 12 | } |
| 13 | |
| 14 | check_writable() { |
| 15 | printf "" > "$1" && rm "$1" |
| 16 | } |
| 17 | |
| 18 | try_download() { |
| 19 | url="$1" |
| 20 | output="$2" |
| 21 | command="$3" |
| 22 | util_name="$(set -- $command; echo "$1")" |
| 23 | |
| 24 | if ! have_binary "$util_name"; then |
| 25 | return 1 |
| 26 | fi |
| 27 | |
| 28 | printf '==> Using %s to download "%s" to "%s"\n' "$util_name" "$url" "$output" |
| 29 | if eval "$command"; then |
| 30 | echo "==> Download complete!" |
| 31 | return |
| 32 | else |
| 33 | echo "error: couldn't download with $util_name ($?)" |
| 34 | return 1 |
| 35 | fi |
| 36 | } |
| 37 | |
| 38 | download() { |
| 39 | dl_url="$1" |
| 40 | dl_output="$2" |
| 41 | |
| 42 | test "$#" -eq "2" || die "download requires exactly two arguments, was given $@" |
| 43 | |
| 44 | if ! check_writable "$dl_output"; then |
| 45 | die "download error: cannot write to $dl_output" |
| 46 | fi |
| 47 | |
| 48 | try_download "$dl_url" "$dl_output" "wget '$dl_url' -O '$dl_output'" && return |
| 49 | try_download "$dl_url" "$dl_output" "curl --silent --fail --output '$dl_output' '$dl_url'" && return |
| 50 | try_download "$dl_url" "$dl_output" "fetch '$dl_url' -o '$dl_output'" && return |
| 51 | try_download "$dl_url" "$dl_output" "http '$dl_url' > '$dl_output'" && return |
| 52 | try_download "$dl_url" "$dl_output" "ftp -o '$dl_output' '$dl_url'" && return |
| 53 | |
| 54 | die "Unable to download $dl_url. exiting." |
| 55 | } |
| 56 | |
| 57 | unarchive() { |
| 58 | ua_archivetype="$1" |
| 59 | ua_infile="$2" |
| 60 | ua_outfile="$3" |
| 61 | ua_distname="$4" |
| 62 | ua_binpostfix="" |
| 63 | ua_os=$(uname -o) |
| 64 | |
| 65 | if [ "$ua_os" = "Msys" ] || [ "$ua_os" = "Cygwin" ] ; then |
| 66 | ua_binpostfix=".exe" |
| 67 | fi |
| 68 | ua_outfile="$ua_outfile$ua_binpostfix" |
| 69 | |
| 70 | if ! check_writable "$ua_outfile"; then |
| 71 | die "unarchive error: cannot write to $ua_outfile" |
| 72 | fi |
| 73 | |
| 74 | case "$ua_archivetype" in |
| 75 | tar.gz) |
| 76 | if have_binary tar; then |
| 77 | echo "==> using 'tar' to extract binary from archive" |
| 78 | < "$ua_infile" tar -Ozxf - "$ua_distname/$ua_distname$ua_binpostfix" > "$ua_outfile" \ |
| 79 | || die "tar has failed" |
| 80 | else |
| 81 | die "no binary on system for extracting tar files" |
| 82 | fi |
| 83 | ;; |
| 84 | zip) |
| 85 | if have_binary unzip; then |
| 86 | echo "==> using 'unzip' to extract binary from archive" |
| 87 | unzip -p "$ua_infile" "$ua_distname/$ua_distname$ua_binpostfix" > "$ua_outfile" \ |
| 88 | || die "unzip has failed" |
| 89 | else |
| 90 | die "no installed method for extracting .zip archives" |
| 91 | fi |
| 92 | ;; |
| 93 | *) |
| 94 | die "unrecognized archive type '$ua_archivetype'" |
| 95 | esac |
| 96 | |
| 97 | chmod +x "$ua_outfile" || die "chmod has failed" |
| 98 | } |
| 99 | |
| 100 | get_go_vars() { |
| 101 | if [ ! -z "$GOOS" ] && [ ! -z "$GOARCH" ]; then |
| 102 | printf "%s-%s" "$GOOS" "$GOARCH" |
| 103 | elif have_binary go; then |
| 104 | printf "%s-%s" "$($GOCC env GOOS)" "$($GOCC env GOARCH)" |
| 105 | else |
| 106 | die "no way of determining system GOOS and GOARCH\nPlease manually set GOOS and GOARCH then retry." |
| 107 | fi |
| 108 | } |
| 109 | |
| 110 | mkurl() { |
| 111 | m_root="$1" |
| 112 | m_name="$2" |
| 113 | m_vers="$3" |
| 114 | m_archive="$4" |
| 115 | m_govars=$(get_go_vars) || die "could not get go env vars" |
| 116 | |
| 117 | echo "https://ipfs.io$m_root/$m_name/$m_vers/${m_name}_${m_vers}_$m_govars.$m_archive" |
| 118 | } |
| 119 | |
| 120 | distroot="$1" |
| 121 | distname="$2" |
| 122 | outpath="$3" |
| 123 | version="$4" |
| 124 | |
| 125 | if [ -z "$distroot" ] || [ -z "$distname" ] || [ -z "$outpath" ] || [ -z "$version" ]; then |
| 126 | die "usage: dist_get <distroot> <distname> <outpath> <version>" |
| 127 | fi |
| 128 | |
| 129 | case $version in |
| 130 | v*) |
| 131 | # correct input |
| 132 | ;; |
| 133 | *) |
| 134 | echo "invalid version '$version'" >&2 |
| 135 | die "versions must begin with 'v', for example: v0.4.0" |
| 136 | ;; |
| 137 | esac |
| 138 | |
| 139 | # TODO: don't depend on the go tool being installed to detect this |
| 140 | goenv=$(get_go_vars) || die "could not get go env vars" |
| 141 | |
| 142 | case $goenv in |
| 143 | linux-*) |
| 144 | archive="tar.gz" |
| 145 | ;; |
| 146 | darwin-*) |
| 147 | archive="tar.gz" |
| 148 | ;; |
| 149 | windows-*) |
| 150 | archive="zip" |
| 151 | ;; |
| 152 | freebsd-*) |
| 153 | archive="tar.gz" |
| 154 | ;; |
| 155 | openbsd-*) |
| 156 | archive="tar.gz" |
| 157 | ;; |
| 158 | *) |
| 159 | echo "unrecognized system environment: $goenv" >&2 |
| 160 | die "currently only linux, darwin, windows and freebsd are supported by this script" |
| 161 | esac |
| 162 | |
| 163 | |
| 164 | mkdir -p bin/tmp |
| 165 | |
| 166 | url=$(mkurl "$distroot" "$distname" "$version" "$archive") |
| 167 | tmpfi="bin/tmp/$distname.$archive" |
| 168 | |
| 169 | download "$url" "$tmpfi" |
| 170 | if [ $? -ne 0 ]; then |
| 171 | die "failed to download $url to $tmpfi" |
| 172 | fi |
| 173 | |
| 174 | unarchive "$archive" "$tmpfi" "$outpath" "$distname" |
| 175 | if [ $? -ne 0 ]; then |
| 176 | die "failed to extract archive $tmpfi" |
| 177 | fi |