完善CUPS远程打印配置 + 添加交接文档

setup_cups.sh:
- 添加 ServerAlias * 支持任意主机名访问
- 添加 DefaultEncryption Never 禁用强制加密
- 添加 /printers 和 /printers/* 位置块允许远程打印
- 修改 Policy 允许匿名打印任务

新增文档:
- CUPS打印服务配置交接文档.md

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

setup_cups.sh

@@ -331,6 +331,16 @@ configure_cups() {
         sed -i '1a Listen 0.0.0.0:631\nListen /run/cups/cups.sock' /etc/cups/cupsd.conf
     fi
 
+    # 添加 ServerAlias * 允许任何主机名访问
+    if ! grep -q "^ServerAlias" /etc/cups/cupsd.conf; then
+        sed -i '/^Listen.*631/a ServerAlias *' /etc/cups/cupsd.conf
+    fi
+
+    # 禁用强制加密（允许 HTTP 访问）
+    if ! grep -q "^DefaultEncryption" /etc/cups/cupsd.conf; then
+        sed -i '/^ServerAlias/a DefaultEncryption Never' /etc/cups/cupsd.conf
+    fi
+
     # 启用网络浏览
     if grep -q "^Browsing" /etc/cups/cupsd.conf; then
         sed -i 's/^Browsing.*/Browsing Yes/' /etc/cups/cupsd.conf
@@ -338,6 +348,14 @@ configure_cups() {
         echo "Browsing Yes" >> /etc/cups/cupsd.conf
     fi
 
+    # 修改 Policy default 允许匿名打印
+    # 找到 <Limit Create-Job Print-Job Print-URI Validate-Job> 块并修改
+    sed -i '/<Limit Create-Job Print-Job Print-URI Validate-Job>/,/<\/Limit>/{
+        s/Order deny,allow/Order allow,deny/
+        /Require user/d
+        /Order/a\    Allow all
+    }' /etc/cups/cupsd.conf
+
     # 配置访问权限 - 允许所有网络访问
     # 先删除现有的 Location 块，然后重新添加
     cat > /tmp/cups_locations.conf << 'EOF'
@@ -359,6 +377,17 @@ configure_cups() {
   Order allow,deny
   Allow all
 </Location>
+
+# 允许远程打印
+<Location /printers>
+  Order allow,deny
+  Allow all
+</Location>
+
+<Location /printers/*>
+  Order allow,deny
+  Allow all
+</Location>
 EOF
 
     # 移除旧的 Location 块