setup-dotnet/externals/get-os-distro.sh

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#!/usr/bin/env bash
# Copyright (c) .NET Foundation and contributors. All rights reserved.
# Licensed under the MIT license. See LICENSE file in the project root for full license information.
#
# Stop script on NZEC
set -e
# Stop script if unbound variable found (use ${var:-} if intentional)
set -u
# By default cmd1 | cmd2 returns exit code of cmd2 regardless of cmd1 success
# This is causing it to fail
set -o pipefail
# Use in the the functions: eval $invocation
invocation='say_verbose "Calling: ${yellow:-}${FUNCNAME[0]} ${green:-}$*${normal:-}"'
# standard output may be used as a return value in the functions
# we need a way to write text on the screen in the functions so that
# it won't interfere with the return value.
# Exposing stream 3 as a pipe to standard output of the script itself
exec 3>&1
say_err() {
printf "%b\n" "get-os-distro: Error: $1" >&2
}
# This platform list is finite - if the SDK/Runtime has supported Linux distribution-specific assets,
# then and only then should the Linux distribution appear in this list.
# Adding a Linux distribution to this list does not imply distribution-specific support.
get_legacy_os_name_from_platform() {
platform="$1"
case "$platform" in
"centos.7")
echo "centos"
return 0
;;
"debian.8")
echo "debian"
return 0
;;
"fedora.23")
echo "fedora.23"
return 0
;;
"fedora.27")
echo "fedora.27"
return 0
;;
"fedora.24")
echo "fedora.24"
return 0
;;
"opensuse.13.2")
echo "opensuse.13.2"
return 0
;;
"opensuse.42.1")
echo "opensuse.42.1"
return 0
;;
"opensuse.42.3")
echo "opensuse.42.3"
return 0
;;
"rhel.7"*)
echo "rhel"
return 0
;;
"ubuntu.14.04")
echo "ubuntu"
return 0
;;
"ubuntu.16.04")
echo "ubuntu.16.04"
return 0
;;
"ubuntu.16.10")
echo "ubuntu.16.10"
return 0
;;
"ubuntu.18.04")
echo "ubuntu.18.04"
return 0
;;
"alpine.3.4.3")
echo "alpine"
return 0
;;
esac
return 1
}
get_linux_platform_name() {
if [ -e /etc/os-release ]; then
. /etc/os-release
echo "$ID.$VERSION_ID"
return 0
elif [ -e /etc/redhat-release ]; then
local redhatRelease=$(</etc/redhat-release)
if [[ $redhatRelease == "CentOS release 6."* || $redhatRelease == "Red Hat Enterprise Linux Server release 6."* ]]; then
echo "rhel.6"
return 0
fi
fi
say_err "Linux specific platform name and version could not be detected: UName = $uname"
return 1
}
get_current_os_name() {
local uname=$(uname)
if [ "$uname" = "Darwin" ]; then
echo "mac"
return 0
elif [ "$uname" = "Linux" ]; then
local linux_platform_name
linux_platform_name="$(get_linux_platform_name)" || { echo "linux" && return 0 ; }
if [[ $linux_platform_name == "rhel.6" ]]; then
echo "$linux_platform_name"
return 0
elif [[ $linux_platform_name == alpine* ]]; then
echo "linux-musl"
return 0
else
echo "linux"
return 0
fi
fi
say_err "OS name could not be detected: UName = $uname"
return 1
}
get_legacy_os_name() {
local uname=$(uname)
if [ "$uname" = "Darwin" ]; then
echo "mac"
return 0
else
if [ -e /etc/os-release ]; then
. /etc/os-release
os=$(get_legacy_os_name_from_platform "$ID.$VERSION_ID" || echo "")
if [ -n "$os" ]; then
echo "$os"
return 0
fi
fi
fi
say_err "Distribution specific OS name and version could not be detected: UName = $uname"
return 1
}
get_machine_architecture() {
if command -v uname > /dev/null; then
CPUName=$(uname -m)
case $CPUName in
armv7l)
echo "arm"
return 0
;;
aarch64)
echo "arm64"
return 0
;;
esac
fi
# Always default to 'x64'
echo "x64"
return 0
}
osName=$(get_current_os_name || echo "")
legacyOsName=$(get_legacy_os_name || echo "")
arch=$(get_machine_architecture || echo "")
primaryName="$osName-$arch"
legacyName="$legacyOsName"
echo "Primary:$primaryName"
echo "Legacy:$legacyName"
if [ -z "$osName" ] && [ -z "$legacyOsName" ];then
exit 1
fi