128 lines
3.1 KiB
Go
128 lines
3.1 KiB
Go
package verify
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import (
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"bytes"
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"context"
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"crypto/rand"
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"encoding/json"
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"fmt"
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"io"
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"log"
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"math/big"
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"net/http"
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)
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// Client handles verification with the hub
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type Client struct {
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verifyURL string
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apiKey string
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client *http.Client
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verbose bool
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}
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// NewClient creates a new verify client
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func NewClient(verifyURL, apiKey string, verbose bool) *Client {
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return &Client{
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verifyURL: verifyURL,
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apiKey: apiKey,
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client: &http.Client{},
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verbose: verbose,
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}
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}
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// VerifyRequest represents the request to the verify endpoint
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type VerifyRequest struct {
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APIKey string `json:"apikey"`
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Task string `json:"task"`
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Answer VerifyAnswer `json:"answer"`
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}
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// VerifyAnswer represents the answer part of verify request
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type VerifyAnswer struct {
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URL string `json:"url"`
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SessionID string `json:"sessionID"`
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}
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// VerifyResponse represents the response from verify endpoint
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type VerifyResponse struct {
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Code int `json:"code"`
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Message string `json:"message"`
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Error string `json:"error,omitempty"`
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}
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// Register registers the proxy with the hub
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func (c *Client) Register(ctx context.Context, tunnelURL, sessionID string) error {
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reqBody := VerifyRequest{
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APIKey: c.apiKey,
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Task: "proxy",
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Answer: VerifyAnswer{
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URL: tunnelURL,
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SessionID: sessionID,
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},
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}
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jsonData, err := json.Marshal(reqBody)
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if err != nil {
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return fmt.Errorf("marshaling request: %w", err)
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}
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if c.verbose {
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var prettyJSON bytes.Buffer
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if err := json.Indent(&prettyJSON, jsonData, "", " "); err == nil {
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log.Printf("\n========== VERIFY REQUEST ==========\nURL: %s\nBody:\n%s\n====================================\n", c.verifyURL, prettyJSON.String())
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}
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}
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req, err := http.NewRequestWithContext(ctx, http.MethodPost, c.verifyURL, bytes.NewBuffer(jsonData))
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if err != nil {
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return fmt.Errorf("creating request: %w", err)
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}
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req.Header.Set("Content-Type", "application/json")
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resp, err := c.client.Do(req)
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if err != nil {
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return fmt.Errorf("sending request: %w", err)
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}
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defer resp.Body.Close()
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body, err := io.ReadAll(resp.Body)
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if err != nil {
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return fmt.Errorf("reading response: %w", err)
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}
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if c.verbose {
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var prettyJSON bytes.Buffer
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if err := json.Indent(&prettyJSON, body, "", " "); err == nil {
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log.Printf("\n========== VERIFY RESPONSE ==========\nStatus: %d\nBody:\n%s\n=====================================\n", resp.StatusCode, prettyJSON.String())
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}
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}
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var apiResp VerifyResponse
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if err := json.Unmarshal(body, &apiResp); err != nil {
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return fmt.Errorf("unmarshaling response: %w (body: %s)", err, string(body))
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}
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if apiResp.Error != "" {
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return fmt.Errorf("API error: %s", apiResp.Error)
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}
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return nil
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}
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// GenerateSessionID generates a random alphanumeric session ID
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func GenerateSessionID(length int) (string, error) {
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const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
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result := make([]byte, length)
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for i := range result {
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num, err := rand.Int(rand.Reader, big.NewInt(int64(len(charset))))
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if err != nil {
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return "", fmt.Errorf("generating random number: %w", err)
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}
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result[i] = charset[num.Int64()]
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}
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return string(result), nil
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}
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