Initial commit: Caddy MCP Server

2026-04-10 21:57:20 -07:00
commit 2a3107f9e2
21 changed files with 2194 additions and 0 deletions
@@ -0,0 +1,172 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"time"
+)
+
+type CaddyClient struct {
+	baseURL string
+	client  *http.Client
+}
+
+func NewCaddyClient(host string) *CaddyClient {
+	if host == "" {
+		host = "localhost:2019"
+	}
+	return &CaddyClient{
+		baseURL: "http://" + host,
+		client:  &http.Client{Timeout: 30 * time.Second},
+	}
+}
+
+func (c *CaddyClient) doRequest(method, path string, body []byte) (*http.Response, error) {
+	var bodyReader io.Reader
+	if body != nil {
+		bodyReader = bytes.NewReader(body)
+	}
+	req, err := http.NewRequest(method, c.baseURL+path, bodyReader)
+	if err != nil {
+		return nil, err
+	}
+	if body != nil {
+		req.Header.Set("Content-Type", "application/json")
+	}
+	return c.client.Do(req)
+}
+
+func (c *CaddyClient) GetConfig() (map[string]interface{}, error) {
+	resp, err := c.doRequest("GET", "/config/", nil)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != 200 {
+		body, _ := io.ReadAll(resp.Body)
+		return nil, fmt.Errorf("API error %d: %s", resp.StatusCode, string(body))
+	}
+	var config map[string]interface{}
+	if err := json.NewDecoder(resp.Body).Decode(&config); err != nil {
+		return nil, err
+	}
+	return config, nil
+}
+
+func (c *CaddyClient) SetConfig(path string, value interface{}) error {
+	data, _ := json.Marshal(value)
+	resp, err := c.doRequest("PUT", "/config/"+path, data)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != 200 {
+		body, _ := io.ReadAll(resp.Body)
+		return fmt.Errorf("API error %d: %s", resp.StatusCode, string(body))
+	}
+	return nil
+}
+
+func (c *CaddyClient) DeleteConfig(path string) error {
+	resp, err := c.doRequest("DELETE", "/config/"+path, nil)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != 200 {
+		body, _ := io.ReadAll(resp.Body)
+		return fmt.Errorf("API error %d: %s", resp.StatusCode, string(body))
+	}
+	return nil
+}
+
+func (c *CaddyClient) PostConfig(path string, value interface{}) error {
+	data, _ := json.Marshal(value)
+	resp, err := c.doRequest("POST", "/config/"+path, data)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != 200 {
+		body, _ := io.ReadAll(resp.Body)
+		return fmt.Errorf("API error %d: %s", resp.StatusCode, string(body))
+	}
+	return nil
+}
+
+func (c *CaddyClient) LoadConfig(config interface{}) error {
+	data, _ := json.Marshal(config)
+	resp, err := c.doRequest("POST", "/load", data)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != 200 {
+		body, _ := io.ReadAll(resp.Body)
+		return fmt.Errorf("API error %d: %s", resp.StatusCode, string(body))
+	}
+	return nil
+}
+
+func (c *CaddyClient) Stop() error {
+	resp, err := c.doRequest("GET", "/stop", nil)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	return nil
+}
+
+func (c *CaddyClient) GetConfigAtPath(path string) (interface{}, error) {
+	resp, err := c.doRequest("GET", "/config/"+path, nil)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode == 400 {
+		return nil, nil
+	}
+	if resp.StatusCode != 200 {
+		body, _ := io.ReadAll(resp.Body)
+		return nil, fmt.Errorf("API error %d: %s", resp.StatusCode, string(body))
+	}
+	var result interface{}
+	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
+		return nil, err
+	}
+	return result, nil
+}
+
+func (c *CaddyClient) AdaptCaddyfile(caddyfile string) (map[string]interface{}, error) {
+	resp, err := c.doRequest("POST", "/adapt", []byte(caddyfile))
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != 200 {
+		body, _ := io.ReadAll(resp.Body)
+		return nil, fmt.Errorf("adapt error %d: %s", resp.StatusCode, string(body))
+	}
+	var result map[string]interface{}
+	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
+		return nil, err
+	}
+	return result, nil
+}
+
+func (c *CaddyClient) ValidateConfig(config map[string]interface{}) error {
+	data, _ := json.Marshal(config)
+	resp, err := c.doRequest("POST", "/validate", data)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != 200 {
+		body, _ := io.ReadAll(resp.Body)
+		return fmt.Errorf("validation failed: %s", string(body))
+	}
+	return nil
+}