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+#!/bin/sh
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+# shellcheck shell=dash
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+
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+# This is just a little script that can be downloaded from the internet to
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+# install rustup. It just does platform detection, downloads the installer
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+# and runs it.
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+
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+# It runs on Unix shells like {a,ba,da,k,z}sh. It uses the common `local`
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+# extension. Note: Most shells limit `local` to 1 var per line, contra bash.
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+
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+set -u
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+
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+# If RUSTUP_UPDATE_ROOT is unset or empty, default it.
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+RUSTUP_UPDATE_ROOT="${RUSTUP_UPDATE_ROOT:-https://static.rust-lang.org/rustup}"
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+
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+#XXX: If you change anything here, please make the same changes in setup_mode.rs
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+usage() {
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+ cat 1>&2 <<EOF
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+rustup-init 1.22.1 (76644d669 2020-07-08)
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+The installer for rustup
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+
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+USAGE:
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+ rustup-init [FLAGS] [OPTIONS]
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+
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+FLAGS:
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+ -v, --verbose Enable verbose output
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+ -q, --quiet Disable progress output
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+ -y Disable confirmation prompt.
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+ --no-modify-path Don't configure the PATH environment variable
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+ -h, --help Prints help information
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+ -V, --version Prints version information
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+
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+OPTIONS:
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+ --default-host <default-host> Choose a default host triple
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+ --default-toolchain <default-toolchain> Choose a default toolchain to install
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+ --default-toolchain none Do not install any toolchains
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+ --profile [minimal|default|complete] Choose a profile
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+ -c, --component <components>... Component name to also install
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+ -t, --target <targets>... Target name to also install
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+EOF
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+}
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+
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+main() {
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+ downloader --check
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+ need_cmd uname
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+ need_cmd mktemp
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+ need_cmd chmod
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+ need_cmd mkdir
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+ need_cmd rm
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+ need_cmd rmdir
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+
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+ get_architecture || return 1
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+ local _arch="$RETVAL"
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+ assert_nz "$_arch" "arch"
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+
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+ local _ext=""
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+ case "$_arch" in
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+ *windows*)
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+ _ext=".exe"
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+ ;;
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+ esac
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+
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+ local _url="${RUSTUP_UPDATE_ROOT}/dist/${_arch}/rustup-init${_ext}"
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+
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+ local _dir
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+ _dir="$(mktemp -d 2>/dev/null || ensure mktemp -d -t rustup)"
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+ local _file="${_dir}/rustup-init${_ext}"
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+
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+ local _ansi_escapes_are_valid=false
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+ if [ -t 2 ]; then
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+ if [ "${TERM+set}" = 'set' ]; then
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+ case "$TERM" in
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+ xterm*|rxvt*|urxvt*|linux*|vt*)
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+ _ansi_escapes_are_valid=true
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+ ;;
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+ esac
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+ fi
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+ fi
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+
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+ # check if we have to use /dev/tty to prompt the user
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+ local need_tty=yes
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+ for arg in "$@"; do
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+ case "$arg" in
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+ -h|--help)
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+ usage
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+ exit 0
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+ ;;
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+ -y)
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+ # user wants to skip the prompt -- we don't need /dev/tty
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+ need_tty=no
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+ ;;
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+ *)
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+ ;;
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+ esac
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+ done
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+
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+ if $_ansi_escapes_are_valid; then
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+ printf "\33[1minfo:\33[0m downloading installer\n" 1>&2
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+ else
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+ printf '%s\n' 'info: downloading installer' 1>&2
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+ fi
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+
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+ ensure mkdir -p "$_dir"
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+ ensure downloader "$_url" "$_file" "$_arch"
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+ ensure chmod u+x "$_file"
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+ if [ ! -x "$_file" ]; then
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+ printf '%s\n' "Cannot execute $_file (likely because of mounting /tmp as noexec)." 1>&2
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+ printf '%s\n' "Please copy the file to a location where you can execute binaries and run ./rustup-init${_ext}." 1>&2
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+ exit 1
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+ fi
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+
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+ if [ "$need_tty" = "yes" ]; then
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+ # The installer is going to want to ask for confirmation by
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+ # reading stdin. This script was piped into `sh` though and
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+ # doesn't have stdin to pass to its children. Instead we're going
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+ # to explicitly connect /dev/tty to the installer's stdin.
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+ if [ ! -t 1 ]; then
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+ err "Unable to run interactively. Run with -y to accept defaults, --help for additional options"
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+ fi
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+
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+ ignore "$_file" "$@" < /dev/tty
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+ else
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+ ignore "$_file" "$@"
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+ fi
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+
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+ local _retval=$?
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+
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+ ignore rm "$_file"
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+ ignore rmdir "$_dir"
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+
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+ return "$_retval"
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+}
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+
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+get_bitness() {
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+ need_cmd head
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+ # Architecture detection without dependencies beyond coreutils.
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+ # ELF files start out "\x7fELF", and the following byte is
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+ # 0x01 for 32-bit and
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+ # 0x02 for 64-bit.
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+ # The printf builtin on some shells like dash only supports octal
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+ # escape sequences, so we use those.
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+ local _current_exe_head
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+ _current_exe_head=$(head -c 5 /proc/self/exe )
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+ if [ "$_current_exe_head" = "$(printf '\177ELF\001')" ]; then
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+ echo 32
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+ elif [ "$_current_exe_head" = "$(printf '\177ELF\002')" ]; then
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+ echo 64
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+ else
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+ err "unknown platform bitness"
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+ fi
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+}
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+
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+get_endianness() {
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+ local cputype=$1
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+ local suffix_eb=$2
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+ local suffix_el=$3
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+
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+ # detect endianness without od/hexdump, like get_bitness() does.
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+ need_cmd head
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+ need_cmd tail
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+
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+ local _current_exe_endianness
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+ _current_exe_endianness="$(head -c 6 /proc/self/exe | tail -c 1)"
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+ if [ "$_current_exe_endianness" = "$(printf '\001')" ]; then
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+ echo "${cputype}${suffix_el}"
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+ elif [ "$_current_exe_endianness" = "$(printf '\002')" ]; then
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+ echo "${cputype}${suffix_eb}"
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+ else
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+ err "unknown platform endianness"
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+ fi
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+}
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+
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+get_architecture() {
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+ local _ostype _cputype _bitness _arch _clibtype
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+ _ostype="$(uname -s)"
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+ _cputype="$(uname -m)"
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+ _clibtype="gnu"
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+
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+ if [ "$_ostype" = Linux ]; then
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+ if [ "$(uname -o)" = Android ]; then
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+ _ostype=Android
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+ fi
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+ if ldd --version 2>&1 | grep -q 'musl'; then
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+ _clibtype="musl"
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+ fi
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+ fi
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+
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+ if [ "$_ostype" = Darwin ] && [ "$_cputype" = i386 ]; then
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+ # Darwin `uname -m` lies
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+ if sysctl hw.optional.x86_64 | grep -q ': 1'; then
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+ _cputype=x86_64
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+ fi
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+ fi
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+
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+ case "$_ostype" in
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+
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+ Android)
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+ _ostype=linux-android
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+ ;;
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+
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+ Linux)
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+ _ostype=unknown-linux-$_clibtype
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+ _bitness=$(get_bitness)
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+ ;;
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+
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+ FreeBSD)
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+ _ostype=unknown-freebsd
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+ ;;
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+
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+ NetBSD)
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+ _ostype=unknown-netbsd
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+ ;;
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+
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+ DragonFly)
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+ _ostype=unknown-dragonfly
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+ ;;
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+
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+ Darwin)
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+ _ostype=apple-darwin
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+ ;;
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+
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+ MINGW* | MSYS* | CYGWIN*)
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+ _ostype=pc-windows-gnu
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+ ;;
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+
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+ *)
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+ err "unrecognized OS type: $_ostype"
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+ ;;
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+
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+ esac
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+
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+ case "$_cputype" in
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+
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+ i386 | i486 | i686 | i786 | x86)
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+ _cputype=i686
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+ ;;
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+
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+ xscale | arm)
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+ _cputype=arm
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+ if [ "$_ostype" = "linux-android" ]; then
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+ _ostype=linux-androideabi
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+ fi
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+ ;;
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+
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+ armv6l)
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+ _cputype=arm
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+ if [ "$_ostype" = "linux-android" ]; then
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+ _ostype=linux-androideabi
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+ else
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+ _ostype="${_ostype}eabihf"
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+ fi
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+ ;;
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+
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+ armv7l | armv8l)
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+ _cputype=armv7
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+ if [ "$_ostype" = "linux-android" ]; then
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+ _ostype=linux-androideabi
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+ else
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+ _ostype="${_ostype}eabihf"
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+ fi
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+ ;;
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+
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+ aarch64)
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+ _cputype=aarch64
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+ ;;
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+
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+ x86_64 | x86-64 | x64 | amd64)
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+ _cputype=x86_64
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+ ;;
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+
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+ mips)
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+ _cputype=$(get_endianness mips '' el)
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+ ;;
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+
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+ mips64)
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+ if [ "$_bitness" -eq 64 ]; then
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+ # only n64 ABI is supported for now
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+ _ostype="${_ostype}abi64"
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+ _cputype=$(get_endianness mips64 '' el)
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+ fi
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+ ;;
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+
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+ ppc)
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+ _cputype=powerpc
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+ ;;
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+
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+ ppc64)
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+ _cputype=powerpc64
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+ ;;
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+
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+ ppc64le)
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+ _cputype=powerpc64le
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+ ;;
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+
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+ s390x)
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+ _cputype=s390x
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+ ;;
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+ riscv64)
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+ _cputype=riscv64gc
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+ ;;
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+ *)
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+ err "unknown CPU type: $_cputype"
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+
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+ esac
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+
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+ # Detect 64-bit linux with 32-bit userland
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+ if [ "${_ostype}" = unknown-linux-gnu ] && [ "${_bitness}" -eq 32 ]; then
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+ case $_cputype in
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+ x86_64)
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+ _cputype=i686
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+ ;;
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+ mips64)
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+ _cputype=$(get_endianness mips '' el)
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+ ;;
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+ powerpc64)
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+ _cputype=powerpc
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+ ;;
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+ aarch64)
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+ _cputype=armv7
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+ if [ "$_ostype" = "linux-android" ]; then
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+ _ostype=linux-androideabi
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+ else
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+ _ostype="${_ostype}eabihf"
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+ fi
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+ ;;
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+ riscv64gc)
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+ err "riscv64 with 32-bit userland unsupported"
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+ ;;
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+ esac
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+ fi
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+
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+ # Detect armv7 but without the CPU features Rust needs in that build,
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+ # and fall back to arm.
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+ # See https://github.com/rust-lang/rustup.rs/issues/587.
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+ if [ "$_ostype" = "unknown-linux-gnueabihf" ] && [ "$_cputype" = armv7 ]; then
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+ if ensure grep '^Features' /proc/cpuinfo | grep -q -v neon; then
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+ # At least one processor does not have NEON.
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+ _cputype=arm
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+ fi
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+ fi
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+
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+ _arch="${_cputype}-${_ostype}"
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+
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+ RETVAL="$_arch"
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+}
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+
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+say() {
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+ printf 'rustup: %s\n' "$1"
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+}
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+
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+err() {
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+ say "$1" >&2
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+ exit 1
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+}
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+
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+need_cmd() {
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+ if ! check_cmd "$1"; then
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+ err "need '$1' (command not found)"
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+ fi
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+}
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+
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+check_cmd() {
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+ command -v "$1" > /dev/null 2>&1
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+}
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+
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+assert_nz() {
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+ if [ -z "$1" ]; then err "assert_nz $2"; fi
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+}
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+
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+# Run a command that should never fail. If the command fails execution
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+# will immediately terminate with an error showing the failing
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+# command.
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+ensure() {
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+ if ! "$@"; then err "command failed: $*"; fi
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+}
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+
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+# This is just for indicating that commands' results are being
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+# intentionally ignored. Usually, because it's being executed
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+# as part of error handling.
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+ignore() {
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+ "$@"
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+}
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+
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+# This wraps curl or wget. Try curl first, if not installed,
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+# use wget instead.
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+downloader() {
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+ local _dld
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+ local _ciphersuites
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+ if check_cmd curl; then
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+ _dld=curl
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+ elif check_cmd wget; then
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+ _dld=wget
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+ else
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+ _dld='curl or wget' # to be used in error message of need_cmd
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+ fi
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+
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+ if [ "$1" = --check ]; then
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+ need_cmd "$_dld"
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+ elif [ "$_dld" = curl ]; then
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+ get_ciphersuites_for_curl
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+ _ciphersuites="$RETVAL"
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+ if [ -n "$_ciphersuites" ]; then
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+ curl --proto '=https' --tlsv1.2 --ciphers "$_ciphersuites" --silent --show-error --fail --location "$1" --output "$2"
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+ else
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+ echo "Warning: Not enforcing strong cipher suites for TLS, this is potentially less secure"
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+ if ! check_help_for "$3" curl --proto --tlsv1.2; then
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+ echo "Warning: Not enforcing TLS v1.2, this is potentially less secure"
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+ curl --silent --show-error --fail --location "$1" --output "$2"
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+ else
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+ curl --proto '=https' --tlsv1.2 --silent --show-error --fail --location "$1" --output "$2"
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+ fi
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+ fi
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+ elif [ "$_dld" = wget ]; then
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+ get_ciphersuites_for_wget
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+ _ciphersuites="$RETVAL"
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+ if [ -n "$_ciphersuites" ]; then
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+ wget --https-only --secure-protocol=TLSv1_2 --ciphers "$_ciphersuites" "$1" -O "$2"
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+ else
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+ echo "Warning: Not enforcing strong cipher suites for TLS, this is potentially less secure"
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+ if ! check_help_for "$3" wget --https-only --secure-protocol; then
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+ echo "Warning: Not enforcing TLS v1.2, this is potentially less secure"
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+ wget "$1" -O "$2"
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+ else
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+ wget --https-only --secure-protocol=TLSv1_2 "$1" -O "$2"
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+ fi
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+ fi
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+ else
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+ err "Unknown downloader" # should not reach here
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+ fi
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+}
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+
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+check_help_for() {
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+ local _arch
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+ local _cmd
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+ local _arg
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+ _arch="$1"
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|
+ shift
|
|
|
+ _cmd="$1"
|
|
|
+ shift
|
|
|
+
|
|
|
+ case "$_arch" in
|
|
|
+
|
|
|
+ # If we're running on OS-X, older than 10.13, then we always
|
|
|
+ # fail to find these options to force fallback
|
|
|
+ *darwin*)
|
|
|
+ if check_cmd sw_vers; then
|
|
|
+ if [ "$(sw_vers -productVersion | cut -d. -f2)" -lt 13 ]; then
|
|
|
+ # Older than 10.13
|
|
|
+ echo "Warning: Detected OS X platform older than 10.13"
|
|
|
+ return 1
|
|
|
+ fi
|
|
|
+ fi
|
|
|
+ ;;
|
|
|
+
|
|
|
+ esac
|
|
|
+
|
|
|
+ for _arg in "$@"; do
|
|
|
+ if ! "$_cmd" --help | grep -q -- "$_arg"; then
|
|
|
+ return 1
|
|
|
+ fi
|
|
|
+ done
|
|
|
+
|
|
|
+ true # not strictly needed
|
|
|
+}
|
|
|
+
|
|
|
+# Return cipher suite string specified by user, otherwise return strong TLS 1.2-1.3 cipher suites
|
|
|
+# if support by local tools is detected. Detection currently supports these curl backends:
|
|
|
+# GnuTLS and OpenSSL (possibly also LibreSSL and BoringSSL). Return value can be empty.
|
|
|
+get_ciphersuites_for_curl() {
|
|
|
+ if [ -n "${RUSTUP_TLS_CIPHERSUITES-}" ]; then
|
|
|
+ # user specified custom cipher suites, assume they know what they're doing
|
|
|
+ RETVAL="$RUSTUP_TLS_CIPHERSUITES"
|
|
|
+ return
|
|
|
+ fi
|
|
|
+
|
|
|
+ local _openssl_syntax="no"
|
|
|
+ local _gnutls_syntax="no"
|
|
|
+ local _backend_supported="yes"
|
|
|
+ if curl -V | grep -q ' OpenSSL/'; then
|
|
|
+ _openssl_syntax="yes"
|
|
|
+ elif curl -V | grep -iq ' LibreSSL/'; then
|
|
|
+ _openssl_syntax="yes"
|
|
|
+ elif curl -V | grep -iq ' BoringSSL/'; then
|
|
|
+ _openssl_syntax="yes"
|
|
|
+ elif curl -V | grep -iq ' GnuTLS/'; then
|
|
|
+ _gnutls_syntax="yes"
|
|
|
+ else
|
|
|
+ _backend_supported="no"
|
|
|
+ fi
|
|
|
+
|
|
|
+ local _args_supported="no"
|
|
|
+ if [ "$_backend_supported" = "yes" ]; then
|
|
|
+ # "unspecified" is for arch, allows for possibility old OS using macports, homebrew, etc.
|
|
|
+ if check_help_for "notspecified" "curl" "--tlsv1.2" "--ciphers" "--proto"; then
|
|
|
+ _args_supported="yes"
|
|
|
+ fi
|
|
|
+ fi
|
|
|
+
|
|
|
+ local _cs=""
|
|
|
+ if [ "$_args_supported" = "yes" ]; then
|
|
|
+ if [ "$_openssl_syntax" = "yes" ]; then
|
|
|
+ _cs=$(get_strong_ciphersuites_for "openssl")
|
|
|
+ elif [ "$_gnutls_syntax" = "yes" ]; then
|
|
|
+ _cs=$(get_strong_ciphersuites_for "gnutls")
|
|
|
+ fi
|
|
|
+ fi
|
|
|
+
|
|
|
+ RETVAL="$_cs"
|
|
|
+}
|
|
|
+
|
|
|
+# Return cipher suite string specified by user, otherwise return strong TLS 1.2-1.3 cipher suites
|
|
|
+# if support by local tools is detected. Detection currently supports these wget backends:
|
|
|
+# GnuTLS and OpenSSL (possibly also LibreSSL and BoringSSL). Return value can be empty.
|
|
|
+get_ciphersuites_for_wget() {
|
|
|
+ if [ -n "${RUSTUP_TLS_CIPHERSUITES-}" ]; then
|
|
|
+ # user specified custom cipher suites, assume they know what they're doing
|
|
|
+ RETVAL="$RUSTUP_TLS_CIPHERSUITES"
|
|
|
+ return
|
|
|
+ fi
|
|
|
+
|
|
|
+ local _cs=""
|
|
|
+ if wget -V | grep -q '\-DHAVE_LIBSSL'; then
|
|
|
+ # "unspecified" is for arch, allows for possibility old OS using macports, homebrew, etc.
|
|
|
+ if check_help_for "notspecified" "wget" "TLSv1_2" "--ciphers" "--https-only" "--secure-protocol"; then
|
|
|
+ _cs=$(get_strong_ciphersuites_for "openssl")
|
|
|
+ fi
|
|
|
+ elif wget -V | grep -q '\-DHAVE_LIBGNUTLS'; then
|
|
|
+ # "unspecified" is for arch, allows for possibility old OS using macports, homebrew, etc.
|
|
|
+ if check_help_for "notspecified" "wget" "TLSv1_2" "--ciphers" "--https-only" "--secure-protocol"; then
|
|
|
+ _cs=$(get_strong_ciphersuites_for "gnutls")
|
|
|
+ fi
|
|
|
+ fi
|
|
|
+
|
|
|
+ RETVAL="$_cs"
|
|
|
+}
|
|
|
+
|
|
|
+# Return strong TLS 1.2-1.3 cipher suites in OpenSSL or GnuTLS syntax. TLS 1.2
|
|
|
+# excludes non-ECDHE and non-AEAD cipher suites. DHE is excluded due to bad
|
|
|
+# DH params often found on servers (see RFC 7919). Sequence matches or is
|
|
|
+# similar to Firefox 68 ESR with weak cipher suites disabled via about:config.
|
|
|
+# $1 must be openssl or gnutls.
|
|
|
+get_strong_ciphersuites_for() {
|
|
|
+ if [ "$1" = "openssl" ]; then
|
|
|
+ # OpenSSL is forgiving of unknown values, no problems with TLS 1.3 values on versions that don't support it yet.
|
|
|
+ echo "TLS_AES_128_GCM_SHA256:TLS_CHACHA20_POLY1305_SHA256:TLS_AES_256_GCM_SHA384:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384"
|
|
|
+ elif [ "$1" = "gnutls" ]; then
|
|
|
+ # GnuTLS isn't forgiving of unknown values, so this may require a GnuTLS version that supports TLS 1.3 even if wget doesn't.
|
|
|
+ # Begin with SECURE128 (and higher) then remove/add to build cipher suites. Produces same 9 cipher suites as OpenSSL but in slightly different order.
|
|
|
+ echo "SECURE128:-VERS-SSL3.0:-VERS-TLS1.0:-VERS-TLS1.1:-VERS-DTLS-ALL:-CIPHER-ALL:-MAC-ALL:-KX-ALL:+AEAD:+ECDHE-ECDSA:+ECDHE-RSA:+AES-128-GCM:+CHACHA20-POLY1305:+AES-256-GCM"
|
|
|
+ fi
|
|
|
+}
|
|
|
+
|
|
|
+main "$@" || exit 1
|