1.1--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2+++ b/tools/dep.sh	Tue Jun 06 20:21:08 2023 -0400
     1.3@@ -0,0 +1,592 @@
     1.4+#!/usr/bin/sh
     1.5+# install demo build dependencies
     1.6+set -u
     1.7+PKG_URL_ROOT="${PKG_URL_ROOT:-https://rwest.io/otom8/packy/bundle}"
     1.8+PKG_NAME="demo_build_deps"
     1.9+check_proc() {
    1.10+    # Check for /proc by looking for the /proc/self/exe link
    1.11+    # This only run on Linux
    1.12+    if ! test -L /proc/self/exe ; then
    1.13+        err "fatal: Unable to find /proc/self/exe.  Is /proc mounted?"
    1.14+    fi
    1.15+}
    1.16+
    1.17+get_bitness() {
    1.18+    need_cmd head
    1.19+    # Architecture detection without dependencies beyond coreutils.
    1.20+    # ELF files start out "\x7fELF", and the following byte is
    1.21+    #   0x01 for 32-bit and
    1.22+    #   0x02 for 64-bit.
    1.23+    # The printf builtin on some shells like dash only supports octal
    1.24+    # escape sequences, so we use those.
    1.25+    local _current_exe_head
    1.26+    _current_exe_head=$(head -c 5 /proc/self/exe )
    1.27+    if [ "$_current_exe_head" = "$(printf '\177ELF\001')" ]; then
    1.28+        echo 32
    1.29+    elif [ "$_current_exe_head" = "$(printf '\177ELF\002')" ]; then
    1.30+        echo 64
    1.31+    else
    1.32+        err "unknown platform bitness"
    1.33+    fi
    1.34+}
    1.35+
    1.36+is_host_amd64_elf() {
    1.37+    need_cmd head
    1.38+    need_cmd tail
    1.39+    # ELF e_machine detection without dependencies beyond coreutils.
    1.40+    # Two-byte field at offset 0x12 indicates the CPU,
    1.41+    # but we're interested in it being 0x3E to indicate amd64, or not that.
    1.42+    local _current_exe_machine
    1.43+    _current_exe_machine=$(head -c 19 /proc/self/exe | tail -c 1)
    1.44+    [ "$_current_exe_machine" = "$(printf '\076')" ]
    1.45+}
    1.46+
    1.47+get_endianness() {
    1.48+    local cputype=$1
    1.49+    local suffix_eb=$2
    1.50+    local suffix_el=$3
    1.51+
    1.52+    # detect endianness without od/hexdump, like get_bitness() does.
    1.53+    need_cmd head
    1.54+    need_cmd tail
    1.55+
    1.56+    local _current_exe_endianness
    1.57+    _current_exe_endianness="$(head -c 6 /proc/self/exe | tail -c 1)"
    1.58+    if [ "$_current_exe_endianness" = "$(printf '\001')" ]; then
    1.59+        echo "${cputype}${suffix_el}"
    1.60+    elif [ "$_current_exe_endianness" = "$(printf '\002')" ]; then
    1.61+        echo "${cputype}${suffix_eb}"
    1.62+    else
    1.63+        err "unknown platform endianness"
    1.64+    fi
    1.65+}
    1.66+
    1.67+get_architecture() {
    1.68+    local _ostype _cputype _bitness _arch _clibtype
    1.69+    _ostype="$(uname -s)"
    1.70+    _cputype="$(uname -m)"
    1.71+    _clibtype="gnu"
    1.72+
    1.73+    if [ "$_ostype" = Linux ]; then
    1.74+        if [ "$(uname -o)" = Android ]; then
    1.75+            _ostype=Android
    1.76+        fi
    1.77+        if ldd --version 2>&1 | grep -q 'musl'; then
    1.78+            _clibtype="musl"
    1.79+        fi
    1.80+    fi
    1.81+
    1.82+    if [ "$_ostype" = Darwin ] && [ "$_cputype" = i386 ]; then
    1.83+        # Darwin `uname -m` lies
    1.84+        if sysctl hw.optional.x86_64 | grep -q ': 1'; then
    1.85+            _cputype=x86_64
    1.86+        fi
    1.87+    fi
    1.88+
    1.89+    if [ "$_ostype" = SunOS ]; then
    1.90+        # Both Solaris and illumos presently announce as "SunOS" in "uname -s"
    1.91+        # so use "uname -o" to disambiguate.  We use the full path to the
    1.92+        # system uname in case the user has coreutils uname first in PATH,
    1.93+        # which has historically sometimes printed the wrong value here.
    1.94+        if [ "$(/usr/bin/uname -o)" = illumos ]; then
    1.95+            _ostype=illumos
    1.96+        fi
    1.97+
    1.98+        # illumos systems have multi-arch userlands, and "uname -m" reports the
    1.99+        # machine hardware name; e.g., "i86pc" on both 32- and 64-bit x86
   1.100+        # systems.  Check for the native (widest) instruction set on the
   1.101+        # running kernel:
   1.102+        if [ "$_cputype" = i86pc ]; then
   1.103+            _cputype="$(isainfo -n)"
   1.104+        fi
   1.105+    fi
   1.106+
   1.107+    case "$_ostype" in
   1.108+
   1.109+        Android)
   1.110+            _ostype=linux-android
   1.111+            ;;
   1.112+
   1.113+        Linux)
   1.114+            check_proc
   1.115+            _ostype=unknown-linux-$_clibtype
   1.116+            _bitness=$(get_bitness)
   1.117+            ;;
   1.118+
   1.119+        FreeBSD)
   1.120+            _ostype=unknown-freebsd
   1.121+            ;;
   1.122+
   1.123+        NetBSD)
   1.124+            _ostype=unknown-netbsd
   1.125+            ;;
   1.126+
   1.127+        DragonFly)
   1.128+            _ostype=unknown-dragonfly
   1.129+            ;;
   1.130+
   1.131+        Darwin)
   1.132+            _ostype=apple-darwin
   1.133+            ;;
   1.134+
   1.135+        illumos)
   1.136+            _ostype=unknown-illumos
   1.137+            ;;
   1.138+
   1.139+        MINGW* | MSYS* | CYGWIN*)
   1.140+            _ostype=pc-windows-gnu
   1.141+            ;;
   1.142+
   1.143+        *)
   1.144+            err "unrecognized OS type: $_ostype"
   1.145+            ;;
   1.146+
   1.147+    esac
   1.148+
   1.149+    case "$_cputype" in
   1.150+
   1.151+        i386 | i486 | i686 | i786 | x86)
   1.152+            _cputype=i686
   1.153+            ;;
   1.154+
   1.155+        xscale | arm)
   1.156+            _cputype=arm
   1.157+            if [ "$_ostype" = "linux-android" ]; then
   1.158+                _ostype=linux-androideabi
   1.159+            fi
   1.160+            ;;
   1.161+
   1.162+        armv6l)
   1.163+            _cputype=arm
   1.164+            if [ "$_ostype" = "linux-android" ]; then
   1.165+                _ostype=linux-androideabi
   1.166+            else
   1.167+                _ostype="${_ostype}eabihf"
   1.168+            fi
   1.169+            ;;
   1.170+
   1.171+        armv7l | armv8l)
   1.172+            _cputype=armv7
   1.173+            if [ "$_ostype" = "linux-android" ]; then
   1.174+                _ostype=linux-androideabi
   1.175+            else
   1.176+                _ostype="${_ostype}eabihf"
   1.177+            fi
   1.178+            ;;
   1.179+
   1.180+        aarch64 | arm64)
   1.181+            _cputype=aarch64
   1.182+            ;;
   1.183+
   1.184+        x86_64 | x86-64 | x64 | amd64)
   1.185+            _cputype=x86_64
   1.186+            ;;
   1.187+
   1.188+        mips)
   1.189+            _cputype=$(get_endianness mips '' el)
   1.190+            ;;
   1.191+
   1.192+        mips64)
   1.193+            if [ "$_bitness" -eq 64 ]; then
   1.194+                # only n64 ABI is supported for now
   1.195+                _ostype="${_ostype}abi64"
   1.196+                _cputype=$(get_endianness mips64 '' el)
   1.197+            fi
   1.198+            ;;
   1.199+
   1.200+        ppc)
   1.201+            _cputype=powerpc
   1.202+            ;;
   1.203+
   1.204+        ppc64)
   1.205+            _cputype=powerpc64
   1.206+            ;;
   1.207+
   1.208+        ppc64le)
   1.209+            _cputype=powerpc64le
   1.210+            ;;
   1.211+
   1.212+        s390x)
   1.213+            _cputype=s390x
   1.214+            ;;
   1.215+        riscv64)
   1.216+            _cputype=riscv64gc
   1.217+            ;;
   1.218+        *)
   1.219+            err "unknown CPU type: $_cputype"
   1.220+
   1.221+    esac
   1.222+
   1.223+    # Detect 64-bit linux with 32-bit userland
   1.224+    if [ "${_ostype}" = unknown-linux-gnu ] && [ "${_bitness}" -eq 32 ]; then
   1.225+        case $_cputype in
   1.226+            x86_64)
   1.227+                if [ -n "${BABEL_CPUTYPE:-}" ]; then
   1.228+                    _cputype="$BABEL_CPUTYPE"
   1.229+                else {
   1.230+                    # 32-bit executable for amd64 = x32
   1.231+                    if is_host_amd64_elf; then {
   1.232+                         echo "This host is running an x32 userland; as it stands, x32 support is poor," 1>&2
   1.233+                         echo "and there isn't a native toolchain -- you will have to install" 1>&2
   1.234+                         echo "multiarch compatibility with i686 and/or amd64, then select one" 1>&2
   1.235+                         echo "by re-running this script with the BABEL_CPUTYPE environment variable" 1>&2
   1.236+                         echo "set to i686 or x86_64, respectively." 1>&2
   1.237+                         echo 1>&2
   1.238+                         exit 1
   1.239+                    }; else
   1.240+                        _cputype=i686
   1.241+                    fi
   1.242+                }; fi
   1.243+                ;;
   1.244+            mips64)
   1.245+                _cputype=$(get_endianness mips '' el)
   1.246+                ;;
   1.247+            powerpc64)
   1.248+                _cputype=powerpc
   1.249+                ;;
   1.250+            aarch64)
   1.251+                _cputype=armv7
   1.252+                if [ "$_ostype" = "linux-android" ]; then
   1.253+                    _ostype=linux-androideabi
   1.254+                else
   1.255+                    _ostype="${_ostype}eabihf"
   1.256+                fi
   1.257+                ;;
   1.258+            riscv64gc)
   1.259+                err "riscv64 with 32-bit userland unsupported"
   1.260+                ;;
   1.261+        esac
   1.262+    fi
   1.263+
   1.264+    # Detect armv7 but without the CPU features Rust needs in that build,
   1.265+    # and fall back to arm.
   1.266+    # See https://github.com/rust-lang/rustup.rs/issues/587.
   1.267+    if [ "$_ostype" = "unknown-linux-gnueabihf" ] && [ "$_cputype" = armv7 ]; then
   1.268+        if ensure grep '^Features' /proc/cpuinfo | grep -q -v neon; then
   1.269+            # At least one processor does not have NEON.
   1.270+            _cputype=arm
   1.271+        fi
   1.272+    fi
   1.273+
   1.274+    _arch="${_cputype}-${_ostype}"
   1.275+
   1.276+    RETVAL="$_arch"
   1.277+}
   1.278+say() {
   1.279+    printf 'dep.sh: %s\n' "$1"
   1.280+}
   1.281+err() {
   1.282+    say "$1" >&2; exit 1
   1.283+}
   1.284+need_cmd() {
   1.285+    if ! check_cmd "$1"; then
   1.286+        err "need '$1' (command not found)"
   1.287+    fi
   1.288+}
   1.289+check_cmd() {
   1.290+    command -v "$1" > /dev/null 2>&1
   1.291+}
   1.292+assert_nz() {
   1.293+    if [ -z "$1" ]; then err "assert_nz $2"; fi
   1.294+}
   1.295+ensure() {
   1.296+    if ! "$@"; then err "command failed: $*"; fi
   1.297+}
   1.298+ignore() {
   1.299+    "$@"
   1.300+}
   1.301+main () {
   1.302+    need_cmd chmod
   1.303+    need_cmd mkdir
   1.304+    need_cmd rm
   1.305+
   1.306+    get_architecture || return 1
   1.307+    local _arch="$RETVAL"
   1.308+    assert_nz "$_arch" "arch"
   1.309+
   1.310+    # no extension unless on windows
   1.311+    local _ext=""
   1.312+    case "$_arch" in
   1.313+        *windows*)
   1.314+            _ext=".exe"
   1.315+            ;;
   1.316+    esac
   1.317+
   1.318+  local _url="${PKG_URL_ROOT}/bin/dist/${_arch}/${PKG_NAME}${_ext}"
   1.319+
   1.320+    local _dir
   1.321+    _dir="$(ensure mktemp -d)"
   1.322+    local _file="${_dir}/${PKG_NAME}${_ext}"
   1.323+
   1.324+    local _ansi_escapes_are_valid=false
   1.325+    if [ -t 2 ]; then
   1.326+        if [ "${TERM+set}" = 'set' ]; then
   1.327+            case "$TERM" in
   1.328+                xterm*|rxvt*|urxvt*|linux*|vt*)
   1.329+                    _ansi_escapes_are_valid=true
   1.330+                ;;
   1.331+            esac
   1.332+        fi
   1.333+    fi
   1.334+
   1.335+    # check if we have to use /dev/tty to prompt the user
   1.336+    local need_tty=yes
   1.337+    for arg in "$@"; do
   1.338+        case "$arg" in
   1.339+            q)
   1.340+                # user wants to skip the prompt --
   1.341+                # we don't need /dev/tty
   1.342+                need_tty=no
   1.343+                ;;
   1.344+            *)
   1.345+                ;;
   1.346+        esac
   1.347+    done
   1.348+
   1.349+    if $_ansi_escapes_are_valid; then
   1.350+        printf "\33[1minfo:\33[0m downloading $PKG_NAME\n" 1>&2
   1.351+    else
   1.352+        printf '%s\n' 'info: downloading $PKG_NAME' 1>&2
   1.353+    fi
   1.354+
   1.355+    ensure mkdir -p "$_dir"
   1.356+    ensure dl "$_url" "$_file" "$_arch"
   1.357+    ensure chmod u+x "$_file"
   1.358+    if [ ! -x "$_file" ]; then
   1.359+        printf '%s\n' "Cannot execute $_file (likely because of mounting /tmp as noexec)." 1>&2
   1.360+        printf '%s\n' "Please copy the file to a location where you can execute binaries and run ./${PKG_NAME}${_ext}." 1>&2
   1.361+        exit 1
   1.362+    fi
   1.363+
   1.364+    if [ "$need_tty" = "yes" ]; then
   1.365+        # The installer is going to want to ask for confirmation by
   1.366+        # reading stdin.  This script was piped into `sh` though and
   1.367+        # doesn't have stdin to pass to its children. Instead we're going
   1.368+        # to explicitly connect /dev/tty to the installer's stdin.
   1.369+        if [ ! -t 1 ]; then
   1.370+            err "Unable to run interactively. Run with -y to accept defaults"
   1.371+        fi
   1.372+
   1.373+        ignore "$_file" "$@" < /dev/tty
   1.374+    else
   1.375+        ignore "$_file" "$@"
   1.376+    fi
   1.377+
   1.378+    local _retval=$?
   1.379+
   1.380+    ignore rm "$_file"
   1.381+    ignore rmdir "$_dir"
   1.382+
   1.383+    return "$_retval"
   1.384+}
   1.385+
   1.386+dl() { # curl || wget
   1.387+    local _dld
   1.388+    local _ciphersuites
   1.389+    local _err
   1.390+    local _status
   1.391+    if check_cmd curl; then
   1.392+        _dld=curl
   1.393+    elif check_cmd wget; then
   1.394+        _dld=wget
   1.395+    else
   1.396+        _dld='curl or wget' # to be used in error message of need_cmd
   1.397+    fi
   1.398+
   1.399+    if [ "$1" = --check ]; then
   1.400+        need_cmd "$_dld"
   1.401+    elif [ "$_dld" = curl ]; then
   1.402+        get_ciphersuites_for_curl
   1.403+        _ciphersuites="$RETVAL"
   1.404+        if [ -n "$_ciphersuites" ]; then
   1.405+            _err=$(curl --proto '=https' --tlsv1.2 --ciphers "$_ciphersuites" --silent --show-error --fail --location "$1" --output "$2" 2>&1)
   1.406+            _status=$?
   1.407+        else
   1.408+            echo "Warning: Not enforcing strong cipher suites for TLS, this is potentially less secure"
   1.409+            if ! check_help_for "$3" curl --proto --tlsv1.2; then
   1.410+                echo "Warning: Not enforcing TLS v1.2, this is potentially less secure"
   1.411+                _err=$(curl --silent --show-error --fail --location "$1" --output "$2" 2>&1)
   1.412+                _status=$?
   1.413+            else
   1.414+                _err=$(curl --proto '=https' --tlsv1.2 --silent --show-error --fail --location "$1" --output "$2" 2>&1)
   1.415+                _status=$?
   1.416+            fi
   1.417+        fi
   1.418+        if [ -n "$_err" ]; then
   1.419+            echo "$_err" >&2
   1.420+            if echo "$_err" | grep -q 404$; then
   1.421+                err "installer for platform '$3' not found 8^C - ask ellis to support your platform"
   1.422+            fi
   1.423+        fi
   1.424+        return $_status
   1.425+    elif [ "$_dld" = wget ]; then
   1.426+        get_ciphersuites_for_wget
   1.427+        _ciphersuites="$RETVAL"
   1.428+        if [ -n "$_ciphersuites" ]; then
   1.429+            _err=$(wget --https-only --secure-protocol=TLSv1_2 --ciphers "$_ciphersuites" "$1" -O "$2" 2>&1)
   1.430+            _status=$?
   1.431+        else
   1.432+            echo "Warning: Not enforcing strong cipher suites for TLS, this is potentially less secure"
   1.433+            if ! check_help_for "$3" wget --https-only --secure-protocol; then
   1.434+                echo "Warning: Not enforcing TLS v1.2, this is potentially less secure"
   1.435+                _err=$(wget "$1" -O "$2" 2>&1)
   1.436+                _status=$?
   1.437+            else
   1.438+                _err=$(wget --https-only --secure-protocol=TLSv1_2 "$1" -O "$2" 2>&1)
   1.439+                _status=$?
   1.440+            fi
   1.441+        fi
   1.442+        if [ -n "$_err" ]; then
   1.443+            echo "$_err" >&2
   1.444+            if echo "$_err" | grep -q ' 404 Not Found$'; then
   1.445+                err "installer for platform '$3' not found!"
   1.446+            fi
   1.447+        fi
   1.448+        return $_status
   1.449+    else
   1.450+        err "Unknown dl program"   # should not reach here
   1.451+    fi
   1.452+}
   1.453+
   1.454+check_help_for() {
   1.455+    local _arch
   1.456+    local _cmd
   1.457+    local _arg
   1.458+    _arch="$1"
   1.459+    shift
   1.460+    _cmd="$1"
   1.461+    shift
   1.462+
   1.463+    local _category
   1.464+    if "$_cmd" --help | grep -q 'For all options use the manual or "--help all".'; then
   1.465+      _category="all"
   1.466+    else
   1.467+      _category=""
   1.468+    fi
   1.469+
   1.470+    case "$_arch" in
   1.471+
   1.472+        *darwin*)
   1.473+        if check_cmd sw_vers; then
   1.474+            case $(sw_vers -productVersion) in
   1.475+                10.*)
   1.476+                    # If we're running on macOS, older than 10.13, then we always
   1.477+                    # fail to find these options to force fallback
   1.478+                    if [ "$(sw_vers -productVersion | cut -d. -f2)" -lt 13 ]; then
   1.479+                        # Older than 10.13
   1.480+                        echo "Warning: Detected macOS platform older than 10.13"
   1.481+                        return 1
   1.482+                    fi
   1.483+                    ;;
   1.484+                11.*)
   1.485+                    # We assume Big Sur will be OK for now
   1.486+                    ;;
   1.487+                *)
   1.488+                    # Unknown product version, warn and continue
   1.489+                    echo "Warning: Detected unknown macOS major version: $(sw_vers -productVersion)"
   1.490+                    echo "Warning TLS capabilities detection may fail"
   1.491+                    ;;
   1.492+            esac
   1.493+        fi
   1.494+        ;;
   1.495+
   1.496+    esac
   1.497+
   1.498+    for _arg in "$@"; do
   1.499+        if ! "$_cmd" --help $_category | grep -q -- "$_arg"; then
   1.500+            return 1
   1.501+        fi
   1.502+    done
   1.503+
   1.504+    true # not strictly needed
   1.505+}
   1.506+
   1.507+# Return cipher suite string specified by user, otherwise return strong TLS 1.2-1.3 cipher suites
   1.508+# if support by local tools is detected. Detection currently supports these curl backends: 
   1.509+# GnuTLS and OpenSSL (possibly also LibreSSL and BoringSSL). Return value can be empty.
   1.510+get_ciphersuites_for_curl() {
   1.511+    if [ -n "${BABEL_TLS_CIPHERSUITES-}" ]; then
   1.512+        # user specified custom cipher suites, assume they know what they're doing
   1.513+        RETVAL="$BABEL_TLS_CIPHERSUITES"
   1.514+        return
   1.515+    fi
   1.516+
   1.517+    local _openssl_syntax="no"
   1.518+    local _gnutls_syntax="no"
   1.519+    local _backend_supported="yes"
   1.520+    if curl -V | grep -q ' OpenSSL/'; then
   1.521+        _openssl_syntax="yes"
   1.522+    elif curl -V | grep -iq ' LibreSSL/'; then
   1.523+        _openssl_syntax="yes"
   1.524+    elif curl -V | grep -iq ' BoringSSL/'; then
   1.525+        _openssl_syntax="yes"
   1.526+    elif curl -V | grep -iq ' GnuTLS/'; then
   1.527+        _gnutls_syntax="yes"
   1.528+    else
   1.529+        _backend_supported="no"
   1.530+    fi
   1.531+
   1.532+    local _args_supported="no"
   1.533+    if [ "$_backend_supported" = "yes" ]; then
   1.534+        # "unspecified" is for arch, allows for possibility old OS using macports, homebrew, etc.
   1.535+        if check_help_for "notspecified" "curl" "--tlsv1.2" "--ciphers" "--proto"; then
   1.536+            _args_supported="yes"
   1.537+        fi
   1.538+    fi
   1.539+
   1.540+    local _cs=""
   1.541+    if [ "$_args_supported" = "yes" ]; then
   1.542+        if [ "$_openssl_syntax" = "yes" ]; then
   1.543+            _cs=$(get_strong_ciphersuites_for "openssl")
   1.544+        elif [ "$_gnutls_syntax" = "yes" ]; then
   1.545+            _cs=$(get_strong_ciphersuites_for "gnutls")
   1.546+        fi
   1.547+    fi
   1.548+
   1.549+    RETVAL="$_cs"
   1.550+}
   1.551+
   1.552+# Return cipher suite string specified by user, otherwise return strong TLS 1.2-1.3 cipher suites
   1.553+# if support by local tools is detected. Detection currently supports these wget backends: 
   1.554+# GnuTLS and OpenSSL (possibly also LibreSSL and BoringSSL). Return value can be empty.
   1.555+get_ciphersuites_for_wget() {
   1.556+    if [ -n "${BABEL_TLS_CIPHERSUITES-}" ]; then
   1.557+        # user specified custom cipher suites, assume they know what they're doing
   1.558+        RETVAL="$BABEL_TLS_CIPHERSUITES"
   1.559+        return
   1.560+    fi
   1.561+
   1.562+    local _cs=""
   1.563+    if wget -V | grep -q '\-DHAVE_LIBSSL'; then
   1.564+        # "unspecified" is for arch, allows for possibility old OS using macports, homebrew, etc.
   1.565+        if check_help_for "notspecified" "wget" "TLSv1_2" "--ciphers" "--https-only" "--secure-protocol"; then
   1.566+            _cs=$(get_strong_ciphersuites_for "openssl")
   1.567+        fi
   1.568+    elif wget -V | grep -q '\-DHAVE_LIBGNUTLS'; then
   1.569+        # "unspecified" is for arch, allows for possibility old OS using macports, homebrew, etc.
   1.570+        if check_help_for "notspecified" "wget" "TLSv1_2" "--ciphers" "--https-only" "--secure-protocol"; then
   1.571+            _cs=$(get_strong_ciphersuites_for "gnutls")
   1.572+        fi
   1.573+    fi
   1.574+
   1.575+    RETVAL="$_cs"
   1.576+}
   1.577+
   1.578+# Return strong TLS 1.2-1.3 cipher suites in OpenSSL or GnuTLS syntax. TLS 1.2 
   1.579+# excludes non-ECDHE and non-AEAD cipher suites. DHE is excluded due to bad 
   1.580+# DH params often found on servers (see RFC 7919). Sequence matches or is
   1.581+# similar to Firefox 68 ESR with weak cipher suites disabled via about:config.  
   1.582+# $1 must be openssl or gnutls.
   1.583+get_strong_ciphersuites_for() {
   1.584+    if [ "$1" = "openssl" ]; then
   1.585+        # OpenSSL is forgiving of unknown values, no problems with TLS 1.3 values on versions that don't support it yet.
   1.586+        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"
   1.587+    elif [ "$1" = "gnutls" ]; then
   1.588+        # GnuTLS isn't forgiving of unknown values, so this may require a GnuTLS version that supports TLS 1.3 even if wget doesn't.
   1.589+        # Begin with SECURE128 (and higher) then remove/add to build cipher suites. Produces same 9 cipher suites as OpenSSL but in slightly different order.
   1.590+        echo "SECURE128:-VERS-SSL3.0:-VERS-TLS1.0:-VERS-TLS1.1:-VERS-DTLS-ALL:-CIPHER-ALL:-MAC-ALL:-KX-ALL:+AEAD:+ECDHE-ECDSA:+ECDHE-RSA:+AES-128-GCM:+CHACHA20-POLY1305:+AES-256-GCM"
   1.591+    fi 
   1.592+}
   1.593+
   1.594+main "$@" || exit 1
   1.595+

     2.1--- a/tools/deps.sh	Tue Jun 06 18:55:17 2023 -0400
     2.2+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
     2.3@@ -1,309 +0,0 @@
     2.4-#!/usr/bin/sh
     2.5-# install demo build dependencies
     2.6-set -u
     2.7-PKG_URL_ROOT="${PKG_URL_ROOT:-https://rwest.io/otom8/packy/bundle}"
     2.8-PKG_NAME="demo_build_deps"
     2.9-say() {printf 'babel-installer: %s\n' "$1"}
    2.10-err() {say "$1" >&2; exit 1}
    2.11-need_cmd() {
    2.12-    if ! check_cmd "$1"; then
    2.13-        err "need '$1' (command not found)"
    2.14-    fi}
    2.15-check_cmd() {command -v "$1" > /dev/null 2>&1}
    2.16-ensure() {if ! "$@"; then err "command failed: $*"; fi}
    2.17-ignore() {"$@"}
    2.18-
    2.19-main () {
    2.20-    need_cmd chmod
    2.21-    need_cmd mkdir
    2.22-    need_cmd rm
    2.23-
    2.24-    get_architecture || return 1
    2.25-    local _arch="$RETVAL"
    2.26-    assert_nz "$_arch" "arch"
    2.27-
    2.28-    # no extension unless on windows
    2.29-    local _ext=""
    2.30-    case "$_arch" in
    2.31-        *windows*)
    2.32-            _ext=".exe"
    2.33-            ;;
    2.34-    esac
    2.35-
    2.36-  local _url="${PKG_URL_ROOT}/bin/dist/${_arch}/${PKG_NAME}${_ext}"
    2.37-
    2.38-    local _dir
    2.39-    _dir="$(ensure mktemp -d)"
    2.40-    local _file="${_dir}/${PKG_NAME}${_ext}"
    2.41-
    2.42-    local _ansi_escapes_are_valid=false
    2.43-    if [ -t 2 ]; then
    2.44-        if [ "${TERM+set}" = 'set' ]; then
    2.45-            case "$TERM" in
    2.46-                xterm*|rxvt*|urxvt*|linux*|vt*)
    2.47-                    _ansi_escapes_are_valid=true
    2.48-                ;;
    2.49-            esac
    2.50-        fi
    2.51-    fi
    2.52-
    2.53-    # check if we have to use /dev/tty to prompt the user
    2.54-    local need_tty=yes
    2.55-    for arg in "$@"; do
    2.56-        case "$arg" in
    2.57-            q)
    2.58-                # user wants to skip the prompt --
    2.59-                # we don't need /dev/tty
    2.60-                need_tty=no
    2.61-                ;;
    2.62-            *)
    2.63-                ;;
    2.64-        esac
    2.65-    done
    2.66-
    2.67-    if $_ansi_escapes_are_valid; then
    2.68-        printf "\33[1minfo:\33[0m downloading $PKG_NAME\n" 1>&2
    2.69-    else
    2.70-        printf '%s\n' 'info: downloading $PKG_NAME' 1>&2
    2.71-    fi
    2.72-
    2.73-    ensure mkdir -p "$_dir"
    2.74-    ensure downloader "$_url" "$_file" "$_arch"
    2.75-    ensure chmod u+x "$_file"
    2.76-    if [ ! -x "$_file" ]; then
    2.77-        printf '%s\n' "Cannot execute $_file (likely because of mounting /tmp as noexec)." 1>&2
    2.78-        printf '%s\n' "Please copy the file to a location where you can execute binaries and run ./${PKG_NAME}${_ext}." 1>&2
    2.79-        exit 1
    2.80-    fi
    2.81-
    2.82-    if [ "$need_tty" = "yes" ]; then
    2.83-        # The installer is going to want to ask for confirmation by
    2.84-        # reading stdin.  This script was piped into `sh` though and
    2.85-        # doesn't have stdin to pass to its children. Instead we're going
    2.86-        # to explicitly connect /dev/tty to the installer's stdin.
    2.87-        if [ ! -t 1 ]; then
    2.88-            err "Unable to run interactively. Run with -y to accept defaults"
    2.89-        fi
    2.90-
    2.91-        ignore "$_file" "$@" < /dev/tty
    2.92-    else
    2.93-        ignore "$_file" "$@"
    2.94-    fi
    2.95-
    2.96-    local _retval=$?
    2.97-
    2.98-    ignore rm "$_file"
    2.99-    ignore rmdir "$_dir"
   2.100-
   2.101-    return "$_retval"
   2.102-}
   2.103-
   2.104-dl() { # curl || wget
   2.105-    local _dld
   2.106-    local _ciphersuites
   2.107-    local _err
   2.108-    local _status
   2.109-    if check_cmd curl; then
   2.110-        _dld=curl
   2.111-    elif check_cmd wget; then
   2.112-        _dld=wget
   2.113-    else
   2.114-        _dld='curl or wget' # to be used in error message of need_cmd
   2.115-    fi
   2.116-
   2.117-    if [ "$1" = --check ]; then
   2.118-        need_cmd "$_dld"
   2.119-    elif [ "$_dld" = curl ]; then
   2.120-        get_ciphersuites_for_curl
   2.121-        _ciphersuites="$RETVAL"
   2.122-        if [ -n "$_ciphersuites" ]; then
   2.123-            _err=$(curl --proto '=https' --tlsv1.2 --ciphers "$_ciphersuites" --silent --show-error --fail --location "$1" --output "$2" 2>&1)
   2.124-            _status=$?
   2.125-        else
   2.126-            echo "Warning: Not enforcing strong cipher suites for TLS, this is potentially less secure"
   2.127-            if ! check_help_for "$3" curl --proto --tlsv1.2; then
   2.128-                echo "Warning: Not enforcing TLS v1.2, this is potentially less secure"
   2.129-                _err=$(curl --silent --show-error --fail --location "$1" --output "$2" 2>&1)
   2.130-                _status=$?
   2.131-            else
   2.132-                _err=$(curl --proto '=https' --tlsv1.2 --silent --show-error --fail --location "$1" --output "$2" 2>&1)
   2.133-                _status=$?
   2.134-            fi
   2.135-        fi
   2.136-        if [ -n "$_err" ]; then
   2.137-            echo "$_err" >&2
   2.138-            if echo "$_err" | grep -q 404$; then
   2.139-                err "installer for platform '$3' not found 8^C - ask ellis to support your platform"
   2.140-            fi
   2.141-        fi
   2.142-        return $_status
   2.143-    elif [ "$_dld" = wget ]; then
   2.144-        get_ciphersuites_for_wget
   2.145-        _ciphersuites="$RETVAL"
   2.146-        if [ -n "$_ciphersuites" ]; then
   2.147-            _err=$(wget --https-only --secure-protocol=TLSv1_2 --ciphers "$_ciphersuites" "$1" -O "$2" 2>&1)
   2.148-            _status=$?
   2.149-        else
   2.150-            echo "Warning: Not enforcing strong cipher suites for TLS, this is potentially less secure"
   2.151-            if ! check_help_for "$3" wget --https-only --secure-protocol; then
   2.152-                echo "Warning: Not enforcing TLS v1.2, this is potentially less secure"
   2.153-                _err=$(wget "$1" -O "$2" 2>&1)
   2.154-                _status=$?
   2.155-            else
   2.156-                _err=$(wget --https-only --secure-protocol=TLSv1_2 "$1" -O "$2" 2>&1)
   2.157-                _status=$?
   2.158-            fi
   2.159-        fi
   2.160-        if [ -n "$_err" ]; then
   2.161-            echo "$_err" >&2
   2.162-            if echo "$_err" | grep -q ' 404 Not Found$'; then
   2.163-                err "installer for platform '$3' not found!"
   2.164-            fi
   2.165-        fi
   2.166-        return $_status
   2.167-    else
   2.168-        err "Unknown downloader"   # should not reach here
   2.169-    fi
   2.170-}
   2.171-
   2.172-check_help_for() {
   2.173-    local _arch
   2.174-    local _cmd
   2.175-    local _arg
   2.176-    _arch="$1"
   2.177-    shift
   2.178-    _cmd="$1"
   2.179-    shift
   2.180-
   2.181-    local _category
   2.182-    if "$_cmd" --help | grep -q 'For all options use the manual or "--help all".'; then
   2.183-      _category="all"
   2.184-    else
   2.185-      _category=""
   2.186-    fi
   2.187-
   2.188-    case "$_arch" in
   2.189-
   2.190-        *darwin*)
   2.191-        if check_cmd sw_vers; then
   2.192-            case $(sw_vers -productVersion) in
   2.193-                10.*)
   2.194-                    # If we're running on macOS, older than 10.13, then we always
   2.195-                    # fail to find these options to force fallback
   2.196-                    if [ "$(sw_vers -productVersion | cut -d. -f2)" -lt 13 ]; then
   2.197-                        # Older than 10.13
   2.198-                        echo "Warning: Detected macOS platform older than 10.13"
   2.199-                        return 1
   2.200-                    fi
   2.201-                    ;;
   2.202-                11.*)
   2.203-                    # We assume Big Sur will be OK for now
   2.204-                    ;;
   2.205-                *)
   2.206-                    # Unknown product version, warn and continue
   2.207-                    echo "Warning: Detected unknown macOS major version: $(sw_vers -productVersion)"
   2.208-                    echo "Warning TLS capabilities detection may fail"
   2.209-                    ;;
   2.210-            esac
   2.211-        fi
   2.212-        ;;
   2.213-
   2.214-    esac
   2.215-
   2.216-    for _arg in "$@"; do
   2.217-        if ! "$_cmd" --help $_category | grep -q -- "$_arg"; then
   2.218-            return 1
   2.219-        fi
   2.220-    done
   2.221-
   2.222-    true # not strictly needed
   2.223-}
   2.224-
   2.225-# Return cipher suite string specified by user, otherwise return strong TLS 1.2-1.3 cipher suites
   2.226-# if support by local tools is detected. Detection currently supports these curl backends: 
   2.227-# GnuTLS and OpenSSL (possibly also LibreSSL and BoringSSL). Return value can be empty.
   2.228-get_ciphersuites_for_curl() {
   2.229-    if [ -n "${BABEL_TLS_CIPHERSUITES-}" ]; then
   2.230-        # user specified custom cipher suites, assume they know what they're doing
   2.231-        RETVAL="$BABEL_TLS_CIPHERSUITES"
   2.232-        return
   2.233-    fi
   2.234-
   2.235-    local _openssl_syntax="no"
   2.236-    local _gnutls_syntax="no"
   2.237-    local _backend_supported="yes"
   2.238-    if curl -V | grep -q ' OpenSSL/'; then
   2.239-        _openssl_syntax="yes"
   2.240-    elif curl -V | grep -iq ' LibreSSL/'; then
   2.241-        _openssl_syntax="yes"
   2.242-    elif curl -V | grep -iq ' BoringSSL/'; then
   2.243-        _openssl_syntax="yes"
   2.244-    elif curl -V | grep -iq ' GnuTLS/'; then
   2.245-        _gnutls_syntax="yes"
   2.246-    else
   2.247-        _backend_supported="no"
   2.248-    fi
   2.249-
   2.250-    local _args_supported="no"
   2.251-    if [ "$_backend_supported" = "yes" ]; then
   2.252-        # "unspecified" is for arch, allows for possibility old OS using macports, homebrew, etc.
   2.253-        if check_help_for "notspecified" "curl" "--tlsv1.2" "--ciphers" "--proto"; then
   2.254-            _args_supported="yes"
   2.255-        fi
   2.256-    fi
   2.257-
   2.258-    local _cs=""
   2.259-    if [ "$_args_supported" = "yes" ]; then
   2.260-        if [ "$_openssl_syntax" = "yes" ]; then
   2.261-            _cs=$(get_strong_ciphersuites_for "openssl")
   2.262-        elif [ "$_gnutls_syntax" = "yes" ]; then
   2.263-            _cs=$(get_strong_ciphersuites_for "gnutls")
   2.264-        fi
   2.265-    fi
   2.266-
   2.267-    RETVAL="$_cs"
   2.268-}
   2.269-
   2.270-# Return cipher suite string specified by user, otherwise return strong TLS 1.2-1.3 cipher suites
   2.271-# if support by local tools is detected. Detection currently supports these wget backends: 
   2.272-# GnuTLS and OpenSSL (possibly also LibreSSL and BoringSSL). Return value can be empty.
   2.273-get_ciphersuites_for_wget() {
   2.274-    if [ -n "${BABEL_TLS_CIPHERSUITES-}" ]; then
   2.275-        # user specified custom cipher suites, assume they know what they're doing
   2.276-        RETVAL="$BABEL_TLS_CIPHERSUITES"
   2.277-        return
   2.278-    fi
   2.279-
   2.280-    local _cs=""
   2.281-    if wget -V | grep -q '\-DHAVE_LIBSSL'; then
   2.282-        # "unspecified" is for arch, allows for possibility old OS using macports, homebrew, etc.
   2.283-        if check_help_for "notspecified" "wget" "TLSv1_2" "--ciphers" "--https-only" "--secure-protocol"; then
   2.284-            _cs=$(get_strong_ciphersuites_for "openssl")
   2.285-        fi
   2.286-    elif wget -V | grep -q '\-DHAVE_LIBGNUTLS'; then
   2.287-        # "unspecified" is for arch, allows for possibility old OS using macports, homebrew, etc.
   2.288-        if check_help_for "notspecified" "wget" "TLSv1_2" "--ciphers" "--https-only" "--secure-protocol"; then
   2.289-            _cs=$(get_strong_ciphersuites_for "gnutls")
   2.290-        fi
   2.291-    fi
   2.292-
   2.293-    RETVAL="$_cs"
   2.294-}
   2.295-
   2.296-# Return strong TLS 1.2-1.3 cipher suites in OpenSSL or GnuTLS syntax. TLS 1.2 
   2.297-# excludes non-ECDHE and non-AEAD cipher suites. DHE is excluded due to bad 
   2.298-# DH params often found on servers (see RFC 7919). Sequence matches or is
   2.299-# similar to Firefox 68 ESR with weak cipher suites disabled via about:config.  
   2.300-# $1 must be openssl or gnutls.
   2.301-get_strong_ciphersuites_for() {
   2.302-    if [ "$1" = "openssl" ]; then
   2.303-        # OpenSSL is forgiving of unknown values, no problems with TLS 1.3 values on versions that don't support it yet.
   2.304-        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"
   2.305-    elif [ "$1" = "gnutls" ]; then
   2.306-        # GnuTLS isn't forgiving of unknown values, so this may require a GnuTLS version that supports TLS 1.3 even if wget doesn't.
   2.307-        # Begin with SECURE128 (and higher) then remove/add to build cipher suites. Produces same 9 cipher suites as OpenSSL but in slightly different order.
   2.308-        echo "SECURE128:-VERS-SSL3.0:-VERS-TLS1.0:-VERS-TLS1.1:-VERS-DTLS-ALL:-CIPHER-ALL:-MAC-ALL:-KX-ALL:+AEAD:+ECDHE-ECDSA:+ECDHE-RSA:+AES-128-GCM:+CHACHA20-POLY1305:+AES-256-GCM"
   2.309-    fi 
   2.310-}
   2.311-
   2.312-main "$@" || exit 1