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install.sh
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install.sh
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#!/bin/sh
# When this option is on, when any command fails (for any of the reasons listed in Consequences of Shell Errors or by
# returning an exit status greater than zero), the shell immediately shall exit,
# as if by executing the exit special built-in utility with no arguments
set -e
execute() {
tmpdir=$(mktmpdir)
log_debug "downloading files into ${tmpdir}"
http_download "${tmpdir}/${TARBALL}" "${TARBALL_URL}"
http_download "${tmpdir}/${CHECKSUM}" "${CHECKSUM_URL}"
hash_sha256_verify "${tmpdir}/${TARBALL}" "${tmpdir}/${CHECKSUM}"
srcdir="${tmpdir}"
(cd "${tmpdir}" && untar "${TARBALL}")
test ! -d "${BINDIR}" && install -d "${BINDIR}"
binexe="orca-cli"
if [ "$OS" = "windows" ]; then
binexe="${binexe}.exe"
fi
install "${srcdir}/${binexe}" "${BINDIR}/" 2> /dev/null || sudo install "${srcdir}/${binexe}" "${BINDIR}/"
log_info "Installed ${BINDIR}/${binexe}"
if [ "$ORIG_PLATFORM" = "darwin/arm64" ]; then
# test if Rosetta2 is present
/usr/bin/pgrep -q oahd || log_info "M1 CPU requires Rosetta 2, which appears to be missing. Install it by running: '/usr/sbin/softwareupdate --install-rosetta'"
fi
}
#------------------------------------------------------------------------------
is_command() {
# look for a builtin command
command -v "$1" >/dev/null
}
untar() {
tarball=$1
case "${tarball}" in
*.tar.gz | *.tgz) tar -xzf "${tarball}" ;;
*.tar) tar -xf "${tarball}" ;;
*.zip) unzip "${tarball}" ;;
*)
log_err "untar unknown archive format for ${tarball}"
return 1
;;
esac
}
hash_sha256() {
TARGET=${1:-/dev/stdin}
if is_command gsha256sum; then
hash=$(gsha256sum "$TARGET") || return 1
echo "$hash" | cut -d ' ' -f 1
elif is_command sha256sum; then
hash=$(sha256sum "$TARGET") || return 1
echo "$hash" | cut -d ' ' -f 1
elif is_command shasum; then
hash=$(shasum -a 256 "$TARGET" 2>/dev/null) || return 1
echo "$hash" | cut -d ' ' -f 1
elif is_command openssl; then
hash=$(openssl -dst openssl dgst -sha256 "$TARGET") || return 1
echo "$hash" | cut -d ' ' -f a
else
log_crit "hash_sha256 unable to find command to compute sha-256 hash"
return 1
fi
}
hash_sha256_verify() {
TARGET=$1
checksums=$2
if [ -z "$checksums" ]; then
log_err "hash_sha256_verify: checksum file not specified"
return 1
fi
BASENAME=${TARGET##*/}
want=$(grep "${BASENAME}" "${checksums}" 2>/dev/null | tr '\t' ' ' | cut -d ' ' -f 1)
if [ -z "$want" ]; then
log_err "hash_sha256_verify: unable to find checksum for '${TARGET}' in '${checksums}'"
return 1
fi
got=$(hash_sha256 "$TARGET")
if [ "$want" != "$got" ]; then
log_err "hash_sha256_verify: checksum for '$TARGET' did not verify ${want} vs $got"
return 1
fi
}
#-----------------------TAG to version------------------------------------------
mktmpdir() {
test -z "$TMPDIR" && TMPDIR="$(mktemp -d)"
mkdir -p "${TMPDIR}"
echo "${TMPDIR}"
}
http_download_curl() {
local_file=$1
source_url=$2
header=$3
if [ -z "$header" ]; then
code=$(curl -w '%{http_code}' -sL -o "$local_file" "$source_url")
else
code=$(curl -w '%{http_code}' -sL -H "$header" -o "$local_file" "$source_url")
fi
if [ "$code" != "200" ]; then
log_debug "http_download_curl received HTTP status $code"
return 1
fi
return 0
}
http_download_wget() {
local_file=$1
source_url=$2
header=$3
if [ -z "$header" ]; then
wget -q -O "$local_file" "$source_url"
else
wget -q --header "$header" -O "$local_file" "$source_url"
fi
}
http_download() {
# $1 = local_file
# $2 = source_url
# $3 = header
log_debug "http_download URL: $2"
if is_command curl; then
http_download_curl "$@"
return
elif is_command wget; then
http_download_wget "$@"
return
fi
log_crit "Failed to find either wget or curl."
return 1
}
http_copy() {
# $1 = URL
# $2 = HTTP headers
tmp=$(mktemp)
http_download "${tmp}" "$1" "$2" || return 1
body=$(cat "$tmp")
rm -f "${tmp}"
echo "$body"
}
github_release() {
owner_repo=$1
version=$2
# in case no version was set , use latest tag
test -z "$version" && version="latest"
giturl="https://github.com/${owner_repo}/releases/${version}"
json=$(http_copy "$giturl" "Accept:application/json")
# return 1 if no json was obtained
test -z "$json" && return 1
version=$(echo "$json" | tr -s '\n' ' ' | sed 's/.*"tag_name":"//' | sed 's/".*//')
# return 1 if no version was obtained
test -z "$version" && return 1
echo "$version"
log_info "github_release: the extracted version $version"
}
convert_tag_to_version() {
# Use either the provided TAG or the latest one
if [ -z "${TAG}" ]; then
log_info "Checking GitHub for latest tag."
else
log_info "Checking GitHub for tag '${TAG}'"
fi
# Obtain the desired release tag
REALTAG=$(github_release "$OWNER/$REPO" "${TAG}") && true
if test -z "$REALTAG"; then
log_crit "Unable to find '${TAG}' - use 'latest' or see https://github.com/$OWNER/$REPO/releases for details"
exit 1
fi
TAG="$REALTAG"
# remove any prefix 'v' to the tag.
VERSION=${TAG#v}
log_info "The desired version to download: ${TAG} for ${TAG}/${OS}/${ARCH}"
}
#-----------------------Logging------------------------------------------
echoerr() {
echo "$@" 1>&2
}
_logp=6
log_set_priority() {
_logp="$1"
}
log_priority() {
if test -z "$1"; then
echo "$_logp"
return
fi
[ "$1" -le "$_logp" ]
}
log_tag() {
case $1 in
0) echo "emerg" ;;
1) echo "alert" ;;
2) echo "crit" ;;
3) echo "err" ;;
4) echo "warning" ;;
5) echo "notice" ;;
6) echo "info" ;;
7) echo "debug" ;;
*) echo "$1" ;;
esac
}
log_debug() {
log_priority 7 || return 0
echoerr "$(log_tag 7)" "$@"
}
log_info() {
log_priority 6 || return 0
echoerr "$(log_tag 6)" "$@"
}
log_err() {
log_priority 3 || return 0
echoerr "$(log_tag 3)" "$@"
}
log_crit() {
log_priority 2 || return 0
echoerr "$(log_tag 2)" "$@"
}
#-----------------------ARGS & Usage---------------------------------------
usage() {
this=$1
cat <<EOF
$this: Orca Security Cli binary downloader
Usage: $this [-b] bin_dir [-d] [tag] [-x]
-b set bin_dir or installation directory, Default: /usr/local/bin or current directory for Windows.
-d Turn on debug logging
[tag] A tag from https://github.com/orcasecurity/orca-cli/releases
In case a tag is missing, latest tag will be used.
-x enables a mode of the shell where all executed commands are printed to the terminal.
EOF
exit 2
}
parse_args() {
# BINDIR default value is /usr/local/bin unless set be ENV
# or over-ridden by flag below
if [ "$OS" = "windows" ]; then
BINDIR=${BINDIR:-.}
else
BINDIR=${BINDIR:-/usr/local/bin}
fi
while getopts "b:dh?x" arg; do
case "$arg" in
b) BINDIR="$OPTARG" ;;
d) log_set_priority 10 ;;
h | \?) usage "$0" ;;
x) set -x ;;
esac
done
#OPTIND gives the position of the next command line argument.
# Shift to get the next arg
shift $((OPTIND - 1))
TAG=$1
}
# ----------------OS & ARCH validations------------------------------------
get_os() {
os=$(uname -s | tr '[:upper:]' '[:lower:]')
case "$os" in
cygwin_nt*) os="windows" ;;
mingw*) os="windows" ;;
msys_nt*) os="windows" ;;
esac
log_info "Discovered os: $os"
echo "$os"
}
get_arch() {
arch=$(uname -m)
case $arch in
x86_64) arch="amd64" ;;
x86) arch="386" ;;
i686) arch="386" ;;
i386) arch="386" ;;
aarch64) arch="arm64" ;;
armv5*) arch="armv5" ;;
armv6*) arch="armv6" ;;
armv7*) arch="armv7" ;;
esac
log_info "Discovered architecture: ${arch}"
echo ${arch}
}
os_check() {
os=$OS
case "$os" in
darwin) return 0 ;;
dragonfly) return 0 ;;
freebsd) return 0 ;;
linux) return 0 ;;
android) return 0 ;;
nacl) return 0 ;;
netbsd) return 0 ;;
openbsd) return 0 ;;
plan9) return 0 ;;
solaris) return 0 ;;
windows) return 0 ;;
esac
log_crit "os_check: '$(uname -s)' got converted to '$os', which is not a supported GOOS value. Please file a report to Orca Security support."
return 1
}
arch_check() {
arch=$ARCH
case "$arch" in
386) return 0 ;;
amd64) return 0 ;;
arm64) return 0 ;;
armv5) return 0 ;;
armv6) return 0 ;;
armv7) return 0 ;;
ppc64) return 0 ;;
ppc64le) return 0 ;;
mips) return 0 ;;
mipsle) return 0 ;;
mips64) return 0 ;;
mips64le) return 0 ;;
s390x) return 0 ;;
amd64p32) return 0 ;;
esac
log_crit "Architecture check: '$(uname -m)' got converted to '$arch', which is not a supported GOARCH value. Please file a report to Orca Security support."
return 1
}
is_supported_platform() {
platform=$1
supported=1
case "$platform" in
darwin/amd64) supported=0 ;;
darwin/arm64) supported=0 ;;
linux/amd64) supported=0 ;;
linux/arm64) supported=0 ;;
windows/arm64) supported=0 ;;
windows/amd64) supported=0 ;;
esac
return $supported
}
check_platform() {
if is_supported_platform "$PLATFORM"; then
true
else
log_crit "Platform check: Platform $PLATFORM is not supported. For more information please follow the documentation or contact Orca Security support for assistance."
exit 1
fi
log_info "Platform check: Platform $PLATFORM is supported"
}
adjust_format() {
# change format (tar.gz or zip) based on OS
case ${OS} in
windows) FORMAT=zip ;;
esac
true
}
# -------------------------------------------------------------------------
# Var
PROJECT_NAME="orca-cli"
OWNER="orcasecurity"
REPO="orca-cli"
FORMAT=tar.gz
# Obtain platform and architecture
OS=$(get_os)
ARCH=$(get_arch)
PREFIX="Orca-Cli"
PLATFORM="${OS}/${ARCH}"
ORIG_PLATFORM="$PLATFORM"
GITHUB_DOWNLOAD=https://github.com/orcasecurity/orca-cli/releases/download
main(){
#Validate os and architecture
os_check "$OS"
arch_check "$ARCH"
parse_args "$@"
check_platform
convert_tag_to_version
adjust_format
NAME=${PROJECT_NAME}_${VERSION}_${OS}_${ARCH}
TARBALL=${NAME}.${FORMAT}
TARBALL_URL=${GITHUB_DOWNLOAD}/${TAG}/${TARBALL}
CHECKSUM=${PROJECT_NAME}_${VERSION}_checksums.txt
CHECKSUM_URL=${GITHUB_DOWNLOAD}/${TAG}/${CHECKSUM}
execute
}
main "${@}"