fix(MCPService): 增加获取系统 PATH 的功能, 修复 process.env.PATH 无法获取系统PATH的问题 (#4766)

src/main/services/MCPService.ts

@@ -1,5 +1,6 @@
 import os from 'node:os'
 import path from 'node:path'
+import fs from 'node:fs'
 
 import { isLinux, isMac, isWin } from '@main/constant'
 import { createInMemoryMCPServer } from '@main/mcpServers/factory'
@@ -13,7 +14,7 @@ import { nanoid } from '@reduxjs/toolkit'
 import { GetMCPPromptResponse, GetResourceResponse, MCPPrompt, MCPResource, MCPServer, MCPTool } from '@types'
 import { app } from 'electron'
 import Logger from 'electron-log'
-
+import { memoize } from 'lodash'
 import { CacheService } from './CacheService'
 import { StreamableHTTPClientTransport, type StreamableHTTPClientTransportOptions } from './MCPStreamableHttpClient'
 
@@ -184,7 +185,7 @@ class McpService {
           args,
           env: {
             ...getDefaultEnvironment(),
-            PATH: this.getEnhancedPath(process.env.PATH || ''),
+            PATH: await this.getEnhancedPath(process.env.PATH || ''),
             ...server.env
           },
           stderr: 'pipe'
@@ -470,13 +471,93 @@ class McpService {
     return await cachedGetResource(server, uri)
   }
 
+  private getSystemPath = memoize(async (): Promise<string> => {
+    return new Promise((resolve, reject) => {
+      let command: string
+      let shell: string
+
+      if (process.platform === 'win32') {
+        shell = 'powershell.exe'
+        command = '$env:PATH'
+      } else {
+        // 尝试获取当前用户的默认 shell
+
+        let userShell = process.env.SHELL
+        if (!userShell) {
+          if (fs.existsSync('/bin/zsh')) {
+            userShell = '/bin/zsh'
+          } else if (fs.existsSync('/bin/bash')) {
+            userShell = '/bin/bash'
+          } else if (fs.existsSync('/bin/fish')) {
+            userShell = '/bin/fish'
+          } else {
+            userShell = '/bin/sh'
+          }
+        }
+        shell = userShell
+
+        // 根据不同的 shell 构建不同的命令
+        if (userShell.includes('zsh')) {
+          shell = '/bin/zsh'
+          command =
+            'source /etc/zshenv 2>/dev/null || true; source ~/.zshenv 2>/dev/null || true; source /etc/zprofile 2>/dev/null || true; source ~/.zprofile 2>/dev/null || true; source /etc/zshrc 2>/dev/null || true; source ~/.zshrc 2>/dev/null || true; source /etc/zlogin 2>/dev/null || true; source ~/.zlogin 2>/dev/null || true; echo $PATH'
+        } else if (userShell.includes('bash')) {
+          shell = '/bin/bash'
+          command =
+            'source /etc/profile 2>/dev/null || true; source ~/.bash_profile 2>/dev/null || true; source ~/.bash_login 2>/dev/null || true; source ~/.profile 2>/dev/null || true; source ~/.bashrc 2>/dev/null || true; echo $PATH'
+        } else if (userShell.includes('fish')) {
+          shell = '/bin/fish'
+          command =
+            'source /etc/fish/config.fish 2>/dev/null || true; source ~/.config/fish/config.fish 2>/dev/null || true; source ~/.config/fish/config.local.fish 2>/dev/null || true; echo $PATH'
+        } else {
+          // 默认使用 zsh
+          shell = '/bin/zsh'
+          command =
+            'source /etc/zshenv 2>/dev/null || true; source ~/.zshenv 2>/dev/null || true; source /etc/zprofile 2>/dev/null || true; source ~/.zprofile 2>/dev/null || true; source /etc/zshrc 2>/dev/null || true; source ~/.zshrc 2>/dev/null || true; source /etc/zlogin 2>/dev/null || true; source ~/.zlogin 2>/dev/null || true; echo $PATH'
+        }
+      }
+
+      console.log(`Using shell: ${shell} with command: ${command}`)
+      const child = require('child_process').spawn(shell, ['-c', command], {
+        env: { ...process.env },
+        cwd: app.getPath('home')
+      })
+
+      let path = ''
+      child.stdout.on('data', (data) => {
+        path += data.toString()
+      })
+
+      child.stderr.on('data', (data) => {
+        console.error('Error getting PATH:', data.toString())
+      })
+
+      child.on('close', (code) => {
+        if (code === 0) {
+          const trimmedPath = path.trim()
+          resolve(trimmedPath)
+        } else {
+          reject(new Error(`Failed to get system PATH, exit code: ${code}`))
+        }
+      })
+    })
+  })
+
   /**
    * Get enhanced PATH including common tool locations
    */
-  private getEnhancedPath(originalPath: string): string {
+  private async getEnhancedPath(originalPath: string): Promise<string> {
+    let systemPath = ''
+    try {
+      systemPath = await this.getSystemPath()
+    } catch (error) {
+      Logger.error('[MCP] Failed to get system PATH:', error)
+    }
     // 将原始 PATH 按分隔符分割成数组
     const pathSeparator = process.platform === 'win32' ? ';' : ':'
-    const existingPaths = new Set(originalPath.split(pathSeparator).filter(Boolean))
+    const existingPaths = new Set(
+      [...systemPath.split(pathSeparator), ...originalPath.split(pathSeparator)].filter(Boolean)
+    )
     const homeDir = process.env.HOME || process.env.USERPROFILE || ''
 
     // 定义要添加的新路径