mirror of git3://git3.w3q/git3-cli
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490 lines
15 KiB
Bash
490 lines
15 KiB
Bash
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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check_cmd() {
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command -v "$1" > /dev/null 2>&1
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}
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assert_nz() {
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if [ -z "$1" ]; then err "assert_nz $2"; fi
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}
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# Run a command that should never fail. If the command fails execution
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# will immediately terminate with an error showing the failing
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# command.
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ensure() {
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if ! "$@"; then err "command failed: $*"; fi
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}
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say() {
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printf 'git3: %s\n' "$1"
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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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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
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_cmd="$1"
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shift
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local _category
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if "$_cmd" --help | grep -q 'For all options use the manual or "--help all".'; then
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_category="all"
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else
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_category=""
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fi
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case "$_arch" in
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*darwin*)
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if check_cmd sw_vers; then
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case $(sw_vers -productVersion) in
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10.*)
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# If we're running on macOS, older than 10.13, then we always
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# fail to find these options to force fallback
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if [ "$(sw_vers -productVersion | cut -d. -f2)" -lt 13 ]; then
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# Older than 10.13
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echo "Warning: Detected macOS platform older than 10.13"
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return 1
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fi
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;;
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11.*)
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# We assume Big Sur will be OK for now
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;;
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*)
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# Unknown product version, warn and continue
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echo "Warning: Detected unknown macOS major version: $(sw_vers -productVersion)"
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echo "Warning TLS capabilities detection may fail"
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;;
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esac
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fi
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;;
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esac
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for _arg in "$@"; do
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if ! "$_cmd" --help $_category | grep -q -- "$_arg"; then
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return 1
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fi
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done
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true # not strictly needed
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}
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# Return strong TLS 1.2-1.3 cipher suites in OpenSSL or GnuTLS syntax. TLS 1.2
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# excludes non-ECDHE and non-AEAD cipher suites. DHE is excluded due to bad
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# DH params often found on servers (see RFC 7919). Sequence matches or is
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# similar to Firefox 68 ESR with weak cipher suites disabled via about:config.
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# $1 must be openssl or gnutls.
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get_strong_ciphersuites_for() {
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if [ "$1" = "openssl" ]; then
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# OpenSSL is forgiving of unknown values, no problems with TLS 1.3 values on versions that don't support it yet.
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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"
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elif [ "$1" = "gnutls" ]; then
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# GnuTLS isn't forgiving of unknown values, so this may require a GnuTLS version that supports TLS 1.3 even if wget doesn't.
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# Begin with SECURE128 (and higher) then remove/add to build cipher suites. Produces same 9 cipher suites as OpenSSL but in slightly different order.
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echo "SECURE128:-VERS-SSL3.0:-VERS-TLS1.0:-VERS-TLS1.1:-VERS-DTLS-ALL:-CIPHER-ALL:-MAC-ALL:-KX-ALL:+AEAD:+ECDHE-ECDSA:+ECDHE-RSA:+AES-128-GCM:+CHACHA20-POLY1305:+AES-256-GCM"
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fi
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}
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check_curl_for_retry_support() {
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local _retry_supported=""
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# "unspecified" is for arch, allows for possibility old OS using macports, homebrew, etc.
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if check_help_for "notspecified" "curl" "--retry"; then
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_retry_supported="--retry 3"
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fi
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RETVAL="$_retry_supported"
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}
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# Return cipher suite string specified by user, otherwise return strong TLS 1.2-1.3 cipher suites
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# if support by local tools is detected. Detection currently supports these curl backends:
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# GnuTLS and OpenSSL (possibly also LibreSSL and BoringSSL). Return value can be empty.
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get_ciphersuites_for_curl() {
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if [ -n "${RUSTUP_TLS_CIPHERSUITES-}" ]; then
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# user specified custom cipher suites, assume they know what they're doing
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RETVAL="$RUSTUP_TLS_CIPHERSUITES"
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return
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fi
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local _openssl_syntax="no"
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local _gnutls_syntax="no"
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local _backend_supported="yes"
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if curl -V | grep -q ' OpenSSL/'; then
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_openssl_syntax="yes"
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elif curl -V | grep -iq ' LibreSSL/'; then
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_openssl_syntax="yes"
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elif curl -V | grep -iq ' BoringSSL/'; then
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_openssl_syntax="yes"
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elif curl -V | grep -iq ' GnuTLS/'; then
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_gnutls_syntax="yes"
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else
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_backend_supported="no"
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fi
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local _args_supported="no"
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if [ "$_backend_supported" = "yes" ]; then
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# "unspecified" is for arch, allows for possibility old OS using macports, homebrew, etc.
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if check_help_for "notspecified" "curl" "--tlsv1.2" "--ciphers" "--proto"; then
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_args_supported="yes"
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fi
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fi
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local _cs=""
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if [ "$_args_supported" = "yes" ]; then
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if [ "$_openssl_syntax" = "yes" ]; then
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_cs=$(get_strong_ciphersuites_for "openssl")
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elif [ "$_gnutls_syntax" = "yes" ]; then
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_cs=$(get_strong_ciphersuites_for "gnutls")
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fi
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fi
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RETVAL="$_cs"
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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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local _err
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local _status
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local _retry
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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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if [ "$1" = --check ]; then
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need_cmd "$_dld"
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elif [ "$_dld" = curl ]; then
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check_curl_for_retry_support
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_retry="$RETVAL"
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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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_err=$(curl $_retry --proto '=https' --tlsv1.2 --ciphers "$_ciphersuites" --silent --show-error --fail --location "$1" --output "$2" 2>&1)
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_status=$?
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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 "$3" curl --proto --tlsv1.2; then
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echo "Warning: Not enforcing TLS v1.2, this is potentially less secure"
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_err=$(curl $_retry --silent --show-error --fail --location "$1" --output "$2" 2>&1)
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_status=$?
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else
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_err=$(curl $_retry --proto '=https' --tlsv1.2 --silent --show-error --fail --location "$1" --output "$2" 2>&1)
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_status=$?
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fi
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fi
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if [ -n "$_err" ]; then
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echo "$_err" >&2
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if echo "$_err" | grep -q 404$; then
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err "installer for platform '$3' not found, this may be unsupported"
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fi
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fi
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return $_status
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elif [ "$_dld" = wget ]; then
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if [ "$(wget -V 2>&1|head -2|tail -1|cut -f1 -d" ")" = "BusyBox" ]; then
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echo "Warning: using the BusyBox version of wget. Not enforcing strong cipher suites for TLS or TLS v1.2, this is potentially less secure"
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_err=$(wget "$1" -O "$2" 2>&1)
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_status=$?
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else
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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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_err=$(wget --https-only --secure-protocol=TLSv1_2 --ciphers "$_ciphersuites" "$1" -O "$2" 2>&1)
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_status=$?
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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 "$3" wget --https-only --secure-protocol; then
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echo "Warning: Not enforcing TLS v1.2, this is potentially less secure"
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_err=$(wget "$1" -O "$2" 2>&1)
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_status=$?
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else
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_err=$(wget --https-only --secure-protocol=TLSv1_2 "$1" -O "$2" 2>&1)
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_status=$?
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fi
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fi
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fi
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if [ -n "$_err" ]; then
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echo "$_err" >&2
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if echo "$_err" | grep -q ' 404 Not Found$'; then
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err "installer for platform '$3' not found, this may be unsupported"
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fi
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fi
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return $_status
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else
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err "Unknown downloader" # should not reach here
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fi
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}
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get_architecture() {
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local _ostype _cputype _bitness _arch _clibtype
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_ostype="$(uname -s)"
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_cputype="$(uname -m)"
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_clibtype="gnu"
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if [ "$_ostype" = Linux ]; then
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if [ "$(uname -o)" = Android ]; then
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_ostype=Android
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fi
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if ldd --version 2>&1 | grep -q 'musl'; then
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_clibtype="musl"
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fi
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fi
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if [ "$_ostype" = Darwin ] && [ "$_cputype" = i386 ]; then
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# Darwin `uname -m` lies
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if sysctl hw.optional.x86_64 | grep -q ': 1'; then
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_cputype=x86_64
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fi
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fi
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if [ "$_ostype" = SunOS ]; then
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# Both Solaris and illumos presently announce as "SunOS" in "uname -s"
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# so use "uname -o" to disambiguate. We use the full path to the
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# system uname in case the user has coreutils uname first in PATH,
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# which has historically sometimes printed the wrong value here.
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if [ "$(/usr/bin/uname -o)" = illumos ]; then
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_ostype=illumos
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fi
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# illumos systems have multi-arch userlands, and "uname -m" reports the
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# machine hardware name; e.g., "i86pc" on both 32- and 64-bit x86
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# systems. Check for the native (widest) instruction set on the
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# running kernel:
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if [ "$_cputype" = i86pc ]; then
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_cputype="$(isainfo -n)"
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fi
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fi
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case "$_ostype" in
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Android)
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_ostype=linux-android
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;;
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Linux)
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check_proc
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_ostype=unknown-linux-$_clibtype
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_bitness=$(get_bitness)
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;;
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FreeBSD)
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_ostype=unknown-freebsd
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;;
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NetBSD)
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_ostype=unknown-netbsd
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;;
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DragonFly)
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_ostype=unknown-dragonfly
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;;
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Darwin)
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_ostype=apple-darwin
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;;
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illumos)
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_ostype=unknown-illumos
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;;
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MINGW* | MSYS* | CYGWIN* | Windows_NT)
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_ostype=pc-windows-gnu
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;;
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*)
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err "unrecognized OS type: $_ostype"
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;;
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esac
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case "$_cputype" in
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i386 | i486 | i686 | i786 | x86)
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_cputype=i686
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;;
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xscale | arm)
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_cputype=arm
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if [ "$_ostype" = "linux-android" ]; then
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_ostype=linux-androideabi
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fi
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;;
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armv6l)
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_cputype=arm
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if [ "$_ostype" = "linux-android" ]; then
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_ostype=linux-androideabi
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else
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_ostype="${_ostype}eabihf"
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fi
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;;
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armv7l | armv8l)
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_cputype=armv7
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if [ "$_ostype" = "linux-android" ]; then
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_ostype=linux-androideabi
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else
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_ostype="${_ostype}eabihf"
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fi
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;;
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aarch64 | arm64)
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_cputype=aarch64
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;;
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x86_64 | x86-64 | x64 | amd64)
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_cputype=x86_64
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;;
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mips)
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_cputype=$(get_endianness mips '' el)
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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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ppc)
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_cputype=powerpc
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;;
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ppc64)
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_cputype=powerpc64
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;;
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ppc64le)
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_cputype=powerpc64le
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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: $_cputype"
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esac
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# Detect 64-bit linux with 32-bit userland
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if [ "${_ostype}" = unknown-linux-gnu ] && [ "${_bitness}" -eq 32 ]; then
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case $_cputype in
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x86_64)
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if [ -n "${RUSTUP_CPUTYPE:-}" ]; then
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_cputype="$RUSTUP_CPUTYPE"
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else {
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# 32-bit executable for amd64 = x32
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if is_host_amd64_elf; then {
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echo "This host is running an x32 userland; as it stands, x32 support is poor," 1>&2
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echo "and there isn't a native toolchain -- you will have to install" 1>&2
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echo "multiarch compatibility with i686 and/or amd64, then select one" 1>&2
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echo "by re-running this script with the RUSTUP_CPUTYPE environment variable" 1>&2
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echo "set to i686 or x86_64, respectively." 1>&2
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echo 1>&2
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echo "You will be able to add an x32 target after installation by running" 1>&2
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echo " rustup target add x86_64-unknown-linux-gnux32" 1>&2
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exit 1
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}; else
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_cputype=i686
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fi
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}; fi
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;;
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mips64)
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_cputype=$(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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# 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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_arch="${_cputype}-${_ostype}"
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RETVAL="$_arch"
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eval 'CPU_TYPE="$_cputype"; OS_TYPE="$(uname -s)"'
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}
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main() {
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downloader --check
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need_cmd uname
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need_cmd chmod
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need_cmd mkdir
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get_architecture || return 1
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local _arch="$RETVAL"
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assert_nz "$_arch" "arch"
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local _dir
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local _suffix
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local _url="https://github.com/git3protocol/git3-cli/releases/latest/download"
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if [ "$OS_TYPE" = Darwin ]; then
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_dir="/usr/local/bin"
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_suffix="macos"
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elif [ "$OS_TYPE" = Windows ]; then
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_dir="/usr/local/bin"
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_suffix="win.exe"
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elif [ "$OS_TYPE" = Linux ]; then
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_dir="/usr/local/bin"
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_suffix="linux"
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else
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err "unsupported OS type: $OS_TYPE"
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fi
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|
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echo "Installing git3 for ${_arch}..."
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|
|
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ensure downloader "${_url}/git-remote-git3-${_suffix}" "${_dir}/git-remote-git3" "${_arch}"
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echo "git-remote-git3 downloaded successfully"
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ensure downloader "${_url}/git3-${_suffix}" "${_dir}/git3" "${_arch}"
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echo "git3 downloaded successfully"
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ensure chmod +x "${_dir}/git-remote-git3"
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ensure chmod +x "${_dir}/git3"
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echo "git3 installed successfully"
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}
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|
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main "$@" || exit 1 |