feat(shell): add auto-restore proxy toggle

.env

@@ -15,6 +15,9 @@ export CLASH_DNS_PORT="1053"
 # 订阅更新策略
 export CLASH_AUTO_UPDATE_SUBSCRIPTIONS="true"
 
+# 登录 Shell 自动恢复代理变量（SSH 登录也会触发）。设为 false 可关闭自动注入，仍可手动执行 clashon。
+export CLASH_SHELL_AUTO_RESTORE_PROXY="true"
+
 # 版本
 export MIHOMO_VERSION="v1.19.23"
 export CLASH_VERSION="v1.18.0"

README.md

@@ -292,10 +292,13 @@ SUBCONVERTER_VERSION=v0.9.9
 MIHOMO_DOWNLOAD_BASE=https://github.com/MetaCubeX/mihomo/releases/download
 CLASH_DOWNLOAD_BASE=https://github.com/WindSpiritSR/clash/releases/download
 CLASH_BUNDLED_ASSET_ENABLED=true
+CLASH_SHELL_AUTO_RESTORE_PROXY=true
 ```
 
 按需设置即可，不需要每项都写。
 
+- `CLASH_SHELL_AUTO_RESTORE_PROXY`：控制登录 Shell 是否自动恢复上次 `clashon` 写入的代理变量。默认 `true` 保持兼容；如果不希望 SSH 远程登录后自动带上 `http_proxy` / `https_proxy`，设为 `false`，之后仍可手动执行 `clashon`。
+
 #### GitHub 下载加速
 
 所有来自 GitHub 的资源（内核、GEO 数据、yq、subconverter、Dashboard）在下载时会自动尝试内置镜像池（`gh-proxy.org`、`ghfast.top`、`ghproxy.net`、`kkgithub.com`），无需额外配置即可加速。

scripts/core/alias.sh

@@ -54,6 +54,35 @@ _clash_alias_yq_bin() {
   echo "$(_clash_alias_project_dir)/runtime/bin/yq"
 }
 
+_clash_alias_env_value() {
+  local key="$1"
+  local env_file
+
+  if [ -n "${!key:-}" ]; then
+    printf '%s' "${!key}"
+    return 0
+  fi
+
+  env_file="$(_clash_alias_project_dir)/.env"
+  [ -f "$env_file" ] || return 0
+
+  sed -nE "s/^[[:space:]]*(export[[:space:]]+)?${key}=['\"]?([^'\"]*)['\"]?$/\2/p" "$env_file" | tail -n 1
+}
+
+_clash_alias_shell_auto_restore_enabled() {
+  local value
+
+  value="$(_clash_alias_env_value CLASH_SHELL_AUTO_RESTORE_PROXY)"
+  case "${value:-true}" in
+    false|False|FALSE|0|no|No|NO|off|Off|OFF)
+      return 1
+      ;;
+    *)
+      return 0
+      ;;
+  esac
+}
+
 _clash_alias_set_persist_enabled() {
   local enabled="$1"
   local state_file
@@ -255,6 +284,7 @@ _clash_alias_run_off() {
 }
 
 _clash_alias_auto_restore_proxy() {
+  _clash_alias_shell_auto_restore_enabled || return 0
   _clash_alias_persist_enabled || return 0
   _clash_alias_export_proxy || return 0
 

scripts/dev/check-shell-auto-restore-toggle.sh

@@ -0,0 +1,59 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_DIR="$(cd "$SCRIPT_DIR/../.." && pwd)"
+
+tmp_dir="$(mktemp -d)"
+trap 'rm -rf "$tmp_dir"' EXIT
+
+test_project="$tmp_dir/project"
+mkdir -p "$test_project/scripts/core" "$test_project/runtime"
+cp "$PROJECT_DIR/scripts/core/alias.sh" "$test_project/scripts/core/alias.sh"
+
+cat > "$test_project/runtime/config.yaml" <<'YAML'
+mixed-port: 7890
+YAML
+
+cat > "$test_project/runtime/shell-proxy.env" <<'EOF'
+SHELL_PROXY_PERSIST_ENABLED="true"
+SHELL_PROXY_PERSIST_TIME="test"
+EOF
+
+run_case() {
+  local name="$1"
+  local env_file_value="$2"
+  local env_override="$3"
+  local expected="$4"
+  local output
+
+  if [ -n "$env_file_value" ]; then
+    printf 'export CLASH_SHELL_AUTO_RESTORE_PROXY="%s"\n' "$env_file_value" > "$test_project/.env"
+  else
+    rm -f "$test_project/.env"
+  fi
+
+  output="$(
+    env -i \
+      HOME="$tmp_dir/home" \
+      PATH="$PATH" \
+      CLASH_SHELL_AUTO_RESTORE_PROXY="$env_override" \
+      bash --noprofile --norc -c '
+        unset http_proxy https_proxy HTTP_PROXY HTTPS_PROXY all_proxy ALL_PROXY no_proxy NO_PROXY
+        source "'"$test_project"'/scripts/core/alias.sh"
+        printf "%s\n" "${http_proxy:-}"
+      '
+  )"
+
+  if [ "$output" != "$expected" ]; then
+    echo "not ok - $name: got '$output', expected '$expected'" >&2
+    return 1
+  fi
+
+  echo "ok - $name"
+}
+
+run_case "default auto-restores persisted proxy" "" "" "http://127.0.0.1:7890"
+run_case "env file disables auto-restore" "false" "" ""
+run_case "environment override enables auto-restore" "false" "true" "http://127.0.0.1:7890"
+run_case "environment override disables auto-restore" "true" "false" ""