v6 version first commit

sdk/auth/codex.go

@@ -0,0 +1,176 @@
+package auth
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/router-for-me/CLIProxyAPI/v6/internal/auth/codex"
+	"github.com/router-for-me/CLIProxyAPI/v6/internal/browser"
+	// legacy client removed
+	"github.com/router-for-me/CLIProxyAPI/v6/internal/config"
+	"github.com/router-for-me/CLIProxyAPI/v6/internal/misc"
+	"github.com/router-for-me/CLIProxyAPI/v6/internal/util"
+	log "github.com/sirupsen/logrus"
+)
+
+// CodexAuthenticator implements the OAuth login flow for Codex accounts.
+type CodexAuthenticator struct {
+	CallbackPort int
+}
+
+// NewCodexAuthenticator constructs a Codex authenticator with default settings.
+func NewCodexAuthenticator() *CodexAuthenticator {
+	return &CodexAuthenticator{CallbackPort: 1455}
+}
+
+func (a *CodexAuthenticator) Provider() string {
+	return "codex"
+}
+
+func (a *CodexAuthenticator) RefreshLead() *time.Duration {
+	d := 5 * 24 * time.Hour
+	return &d
+}
+
+func (a *CodexAuthenticator) Login(ctx context.Context, cfg *config.Config, opts *LoginOptions) (*TokenRecord, error) {
+	if cfg == nil {
+		return nil, fmt.Errorf("cliproxy auth: configuration is required")
+	}
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	if opts == nil {
+		opts = &LoginOptions{}
+	}
+
+	pkceCodes, err := codex.GeneratePKCECodes()
+	if err != nil {
+		return nil, fmt.Errorf("codex pkce generation failed: %w", err)
+	}
+
+	state, err := misc.GenerateRandomState()
+	if err != nil {
+		return nil, fmt.Errorf("codex state generation failed: %w", err)
+	}
+
+	oauthServer := codex.NewOAuthServer(a.CallbackPort)
+	if err = oauthServer.Start(); err != nil {
+		if strings.Contains(err.Error(), "already in use") {
+			return nil, codex.NewAuthenticationError(codex.ErrPortInUse, err)
+		}
+		return nil, codex.NewAuthenticationError(codex.ErrServerStartFailed, err)
+	}
+	defer func() {
+		stopCtx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+		defer cancel()
+		if stopErr := oauthServer.Stop(stopCtx); stopErr != nil {
+			log.Warnf("codex oauth server stop error: %v", stopErr)
+		}
+	}()
+
+	authSvc := codex.NewCodexAuth(cfg)
+
+	authURL, err := authSvc.GenerateAuthURL(state, pkceCodes)
+	if err != nil {
+		return nil, fmt.Errorf("codex authorization url generation failed: %w", err)
+	}
+
+	if !opts.NoBrowser {
+		log.Info("Opening browser for Codex authentication")
+		if !browser.IsAvailable() {
+			log.Warn("No browser available; please open the URL manually")
+			util.PrintSSHTunnelInstructions(a.CallbackPort)
+			log.Infof("Visit the following URL to continue authentication:\n%s", authURL)
+		} else if err = browser.OpenURL(authURL); err != nil {
+			log.Warnf("Failed to open browser automatically: %v", err)
+			util.PrintSSHTunnelInstructions(a.CallbackPort)
+			log.Infof("Visit the following URL to continue authentication:\n%s", authURL)
+		}
+	} else {
+		util.PrintSSHTunnelInstructions(a.CallbackPort)
+		log.Infof("Visit the following URL to continue authentication:\n%s", authURL)
+	}
+
+	log.Info("Waiting for Codex authentication callback...")
+
+	result, err := oauthServer.WaitForCallback(5 * time.Minute)
+	if err != nil {
+		if strings.Contains(err.Error(), "timeout") {
+			return nil, codex.NewAuthenticationError(codex.ErrCallbackTimeout, err)
+		}
+		return nil, err
+	}
+
+	if result.Error != "" {
+		return nil, codex.NewOAuthError(result.Error, "", http.StatusBadRequest)
+	}
+
+	if result.State != state {
+		return nil, codex.NewAuthenticationError(codex.ErrInvalidState, fmt.Errorf("state mismatch"))
+	}
+
+	log.Debug("Codex authorization code received; exchanging for tokens")
+
+	authBundle, err := authSvc.ExchangeCodeForTokens(ctx, result.Code, pkceCodes)
+	if err != nil {
+		return nil, codex.NewAuthenticationError(codex.ErrCodeExchangeFailed, err)
+	}
+
+	tokenStorage := authSvc.CreateTokenStorage(authBundle)
+
+	if tokenStorage == nil || tokenStorage.Email == "" {
+		return nil, fmt.Errorf("codex token storage missing account information")
+	}
+
+	fileName := fmt.Sprintf("codex-%s.json", tokenStorage.Email)
+	metadata := map[string]string{
+		"email": tokenStorage.Email,
+	}
+
+	log.Info("Codex authentication successful")
+	if authBundle.APIKey != "" {
+		log.Info("Codex API key obtained and stored")
+	}
+
+	return &TokenRecord{
+		Provider: a.Provider(),
+		FileName: fileName,
+		Storage:  tokenStorage,
+		Metadata: metadata,
+	}, nil
+}
+
+func (a *CodexAuthenticator) Refresh(ctx context.Context, cfg *config.Config, record *TokenRecord) (*TokenRecord, error) {
+	if record == nil || record.Storage == nil {
+		return nil, fmt.Errorf("cliproxy auth: empty token record for codex refresh")
+	}
+	if cfg == nil {
+		return nil, fmt.Errorf("cliproxy auth: configuration is required")
+	}
+	if ctx == nil {
+		ctx = context.Background()
+	}
+
+	storage, ok := record.Storage.(*codex.CodexTokenStorage)
+	if !ok {
+		return nil, fmt.Errorf("cliproxy auth: unexpected token storage type for codex refresh")
+	}
+
+	svc := codex.NewCodexAuth(cfg)
+	td, err := svc.RefreshTokensWithRetry(ctx, storage.RefreshToken, 3)
+	if err != nil {
+		return nil, err
+	}
+	svc.UpdateTokenStorage(storage, td)
+
+	result := &TokenRecord{
+		Provider: a.Provider(),
+		FileName: record.FileName,
+		Storage:  storage,
+		Metadata: record.Metadata,
+	}
+	return result, nil
+}