mirror of git3://git3.w3q/git3-cli
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578 lines
18 KiB
Bash
578 lines
18 KiB
Bash
#!/bin/sh
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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://git3.sh/download/latest"
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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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echo "Installing git3 CLI for ${_arch}..."
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echo "[Downloading] git-remote-git3..."
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ensure downloader "${_url}/git-remote-git3-${_suffix}" "${_dir}/git-remote-git3" "${_arch}"
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ensure chmod +x "${_dir}/git-remote-git3"
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echo "[Done] git-remote-git3 installed successfully"
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echo "[Downloading] git3..."
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ensure downloader "${_url}/git3-${_suffix}" "${_dir}/git3" "${_arch}"
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ensure chmod +x "${_dir}/git3"
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echo "[Done] git3 installed successfully"
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echo ""
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echo "[All Done] git3 CLI installed successfully!"
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echo ""
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echo "Run 'git3 --help' to get started."
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echo "Run 'git remote add origin git3://<repo>' to add a git3 remote."
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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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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: $*"; fi
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}
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# This is just for indicating that commands' results are being
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# intentionally ignored. Usually, because it's being executed
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# as part of error handling.
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ignore() {
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"$@"
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}
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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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check_proc() {
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# Check for /proc by looking for the /proc/self/exe link
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# This is only run on Linux
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if ! test -L /proc/self/exe ; then
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err "fatal: Unable to find /proc/self/exe. Is /proc mounted? Installation cannot proceed without /proc."
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fi
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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" = "$(printf '\177ELF\002')" ]; then
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echo 64
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else
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err "unknown platform bitness"
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fi
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}
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is_host_amd64_elf() {
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need_cmd head
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need_cmd tail
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# ELF e_machine detection without dependencies beyond coreutils.
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# Two-byte field at offset 0x12 indicates the CPU,
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# but we're interested in it being 0x3E to indicate amd64, or not that.
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local _current_exe_machine
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_current_exe_machine=$(head -c 19 /proc/self/exe | tail -c 1)
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[ "$_current_exe_machine" = "$(printf '\076')" ]
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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=$3
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# detect endianness without od/hexdump, like get_bitness() does.
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need_cmd head
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need_cmd tail
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local _current_exe_endianness
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_current_exe_endianness="$(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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# 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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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="$_cs"
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}
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# Return cipher suite string specified by user, otherwise return strong TLS 1.2-1.3 cipher suites
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# if support by local tools is detected. Detection currently supports these wget backends:
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# GnuTLS and OpenSSL (possibly also LibreSSL and BoringSSL). Return value can be empty.
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get_ciphersuites_for_wget() {
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local _cs=""
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if wget -V | grep -q '\-DHAVE_LIBSSL'; then
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# "unspecified" is for arch, allows for possibility old OS using macports, homebrew, etc.
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if check_help_for "notspecified" "wget" "TLSv1_2" "--ciphers" "--https-only" "--secure-protocol"; then
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_cs=$(get_strong_ciphersuites_for "openssl")
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fi
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elif wget -V | grep -q '\-DHAVE_LIBGNUTLS'; 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" "wget" "TLSv1_2" "--ciphers" "--https-only" "--secure-protocol"; 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)
|
|
_cputype=riscv64gc
|
|
;;
|
|
*)
|
|
err "unknown CPU type: $_cputype"
|
|
|
|
esac
|
|
|
|
# Detect 64-bit linux with 32-bit userland
|
|
if [ "${_ostype}" = unknown-linux-gnu ] && [ "${_bitness}" -eq 32 ]; then
|
|
case $_cputype in
|
|
x86_64)
|
|
if [ -n "${RUSTUP_CPUTYPE:-}" ]; then
|
|
_cputype="$RUSTUP_CPUTYPE"
|
|
else {
|
|
# 32-bit executable for amd64 = x32
|
|
if is_host_amd64_elf; then {
|
|
echo "This host is running an x32 userland; as it stands, x32 support is poor," 1>&2
|
|
echo "and there isn't a native toolchain -- you will have to install" 1>&2
|
|
echo "multiarch compatibility with i686 and/or amd64, then select one" 1>&2
|
|
echo "by re-running this script with the RUSTUP_CPUTYPE environment variable" 1>&2
|
|
echo "set to i686 or x86_64, respectively." 1>&2
|
|
echo 1>&2
|
|
echo "You will be able to add an x32 target after installation by running" 1>&2
|
|
echo " git3 target add x86_64-unknown-linux-gnux32" 1>&2
|
|
exit 1
|
|
}; else
|
|
_cputype=i686
|
|
fi
|
|
}; fi
|
|
;;
|
|
mips64)
|
|
_cputype=$(get_endianness mips '' el)
|
|
;;
|
|
powerpc64)
|
|
_cputype=powerpc
|
|
;;
|
|
aarch64)
|
|
_cputype=armv7
|
|
if [ "$_ostype" = "linux-android" ]; then
|
|
_ostype=linux-androideabi
|
|
else
|
|
_ostype="${_ostype}eabihf"
|
|
fi
|
|
;;
|
|
riscv64gc)
|
|
err "riscv64 with 32-bit userland unsupported"
|
|
;;
|
|
esac
|
|
fi
|
|
|
|
# Detect armv7 but without the CPU features Rust needs in that build,
|
|
# and fall back to arm.
|
|
if [ "$_ostype" = "unknown-linux-gnueabihf" ] && [ "$_cputype" = armv7 ]; then
|
|
if ensure grep '^Features' /proc/cpuinfo | grep -q -v neon; then
|
|
# At least one processor does not have NEON.
|
|
_cputype=arm
|
|
fi
|
|
fi
|
|
|
|
_arch="${_cputype}-${_ostype}"
|
|
|
|
RETVAL="$_arch"
|
|
eval 'CPU_TYPE="$_cputype"; OS_TYPE="$(uname -s)"'
|
|
}
|
|
|
|
main "$@" || exit 1 |