From b77ff248ace17994d4b2a79e6e1f5a267089f9ba Mon Sep 17 00:00:00 2001
From: Meo597 <197331664+Meo597@users.noreply.github.com>
Date: Sat, 12 Apr 2025 00:45:03 +0800
Subject: [PATCH] Alpine: refactor code related to architecture identification

---
 alpinelinux/install-release.sh | 115 ++++++++++++++++++---------------
 1 file changed, 63 insertions(+), 52 deletions(-)

diff --git a/alpinelinux/install-release.sh b/alpinelinux/install-release.sh
index 753f0a2..4c4c95e 100644
--- a/alpinelinux/install-release.sh
+++ b/alpinelinux/install-release.sh
@@ -2,58 +2,6 @@
 
 set -euxo pipefail
 
-# Identify architecture
-case "$(arch -s)" in
-'i386' | 'i686')
-    MACHINE='32'
-    ;;
-'amd64' | 'x86_64')
-    MACHINE='64'
-    ;;
-'armv5tel')
-    MACHINE='arm32-v5'
-    ;;
-'armv6l')
-    MACHINE='arm32-v6'
-    grep Features /proc/cpuinfo | grep -qw 'vfp' || MACHINE='arm32-v5'
-    ;;
-'armv7' | 'armv7l')
-    MACHINE='arm32-v7a'
-    grep Features /proc/cpuinfo | grep -qw 'vfp' || MACHINE='arm32-v5'
-    ;;
-'armv8' | 'aarch64')
-    MACHINE='arm64-v8a'
-    ;;
-'mips')
-    MACHINE='mips32'
-    ;;
-'mipsle')
-    MACHINE='mips32le'
-    ;;
-'mips64')
-    MACHINE='mips64'
-    ;;
-'mips64le')
-    MACHINE='mips64le'
-    ;;
-'ppc64')
-    MACHINE='ppc64'
-    ;;
-'ppc64le')
-    MACHINE='ppc64le'
-    ;;
-'riscv64')
-    MACHINE='riscv64'
-    ;;
-'s390x')
-    MACHINE='s390x'
-    ;;
-*)
-    echo "error: The architecture is not supported."
-    exit 1
-    ;;
-esac
-
 TMP_DIRECTORY="$(mktemp -d)/"
 ZIP_FILE="${TMP_DIRECTORY}Xray-linux-$MACHINE.zip"
 DOWNLOAD_LINK="https://github.com/XTLS/Xray-core/releases/latest/download/Xray-linux-$MACHINE.zip"
@@ -76,6 +24,68 @@ check_if_running_as_root() {
     fi
 }
 
+identify_architecture() {
+    if [ "$(uname)" != 'Linux' ]; then
+        echo "error: This operating system is not supported."
+        return 1
+    fi
+    case "$(uname -m)" in
+    'i386' | 'i686')
+        MACHINE='32'
+        ;;
+    'amd64' | 'x86_64')
+        MACHINE='64'
+        ;;
+    'armv5tel')
+        MACHINE='arm32-v5'
+        ;;
+    'armv6l')
+        MACHINE='arm32-v6'
+        grep Features /proc/cpuinfo | grep -qw 'vfp' || MACHINE='arm32-v5'
+        ;;
+    'armv7' | 'armv7l')
+        MACHINE='arm32-v7a'
+        grep Features /proc/cpuinfo | grep -qw 'vfp' || MACHINE='arm32-v5'
+        ;;
+    'armv8' | 'aarch64')
+        MACHINE='arm64-v8a'
+        ;;
+    'mips')
+        MACHINE='mips32'
+        ;;
+    'mipsle')
+        MACHINE='mips32le'
+        ;;
+    'mips64')
+        MACHINE='mips64'
+        lscpu | grep -q "Little Endian" && MACHINE='mips64le'
+        ;;
+    'mips64le')
+        MACHINE='mips64le'
+        ;;
+    'ppc64')
+        MACHINE='ppc64'
+        ;;
+    'ppc64le')
+        MACHINE='ppc64le'
+        ;;
+    'riscv64')
+        MACHINE='riscv64'
+        ;;
+    's390x')
+        MACHINE='s390x'
+        ;;
+    *)
+        echo "error: The architecture is not supported."
+        return 1
+        ;;
+    esac
+    if [ ! -f '/etc/os-release' ]; then
+        echo "error: Don't use outdated Linux distributions."
+        return 1
+    fi
+}
+
 install_software() {
     if [[ -n "$(command -v curl)" ]]; then
         return
@@ -203,6 +213,7 @@ information() {
 main() {
     check_alpine || return 1
     check_if_running_as_root || return 1
+    identify_architecture || return 1
     install_software
     download_xray
     verification_xray