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backend/internal/auth/claude/token.go

@@ -0,0 +1,104 @@
+// Package claude provides authentication and token management functionality
+// for Anthropic's Claude AI services. It handles OAuth2 token storage, serialization,
+// and retrieval for maintaining authenticated sessions with the Claude API.
+package claude
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/router-for-me/CLIProxyAPI/v7/internal/misc"
+	log "github.com/sirupsen/logrus"
+)
+
+// ClaudeTokenStorage stores OAuth2 token information for Anthropic Claude API authentication.
+// It maintains compatibility with the existing auth system while adding Claude-specific fields
+// for managing access tokens, refresh tokens, and user account information.
+type ClaudeTokenStorage struct {
+	// IDToken is the JWT ID token containing user claims and identity information.
+	IDToken string `json:"id_token"`
+
+	// AccessToken is the OAuth2 access token used for authenticating API requests.
+	AccessToken string `json:"access_token"`
+
+	// RefreshToken is used to obtain new access tokens when the current one expires.
+	RefreshToken string `json:"refresh_token"`
+
+	// LastRefresh is the timestamp of the last token refresh operation.
+	LastRefresh string `json:"last_refresh"`
+
+	// Email is the Anthropic account email address associated with this token.
+	Email string `json:"email"`
+
+	// AccountUUID identifies the Anthropic account returned by OAuth.
+	AccountUUID string `json:"account_uuid,omitempty"`
+
+	// OrganizationUUID identifies the Anthropic organization returned by OAuth.
+	OrganizationUUID string `json:"organization_uuid,omitempty"`
+
+	// OrganizationName is the display name returned by OAuth.
+	OrganizationName string `json:"organization_name,omitempty"`
+
+	// DeviceIDs contains the single device identity assigned to this credential.
+	DeviceIDs []string `json:"claude_device_ids,omitempty"`
+
+	// Type indicates the authentication provider type, always "claude" for this storage.
+	Type string `json:"type"`
+
+	// Expire is the timestamp when the current access token expires.
+	Expire string `json:"expired"`
+
+	// Metadata holds arbitrary key-value pairs injected via hooks.
+	// It is not exported to JSON directly to allow flattening during serialization.
+	Metadata map[string]any `json:"-"`
+}
+
+// SetMetadata allows external callers to inject metadata into the storage before saving.
+func (ts *ClaudeTokenStorage) SetMetadata(meta map[string]any) {
+	ts.Metadata = meta
+}
+
+// SaveTokenToFile serializes the Claude token storage to a JSON file.
+// This method creates the necessary directory structure and writes the token
+// data in JSON format to the specified file path for persistent storage.
+// It merges any injected metadata into the top-level JSON object.
+//
+// Parameters:
+//   - authFilePath: The full path where the token file should be saved
+//
+// Returns:
+//   - error: An error if the operation fails, nil otherwise
+func (ts *ClaudeTokenStorage) SaveTokenToFile(authFilePath string) error {
+	misc.LogSavingCredentials(authFilePath)
+	ts.Type = "claude"
+
+	// Create directory structure if it doesn't exist
+	if err := os.MkdirAll(filepath.Dir(authFilePath), 0700); err != nil {
+		return fmt.Errorf("failed to create directory: %v", err)
+	}
+
+	// Merge metadata using helper
+	data, errMerge := misc.MergeMetadata(ts, ts.Metadata)
+	if errMerge != nil {
+		return fmt.Errorf("failed to merge metadata: %w", errMerge)
+	}
+
+	// Create the token file
+	f, err := os.Create(authFilePath)
+	if err != nil {
+		return fmt.Errorf("failed to create token file: %w", err)
+	}
+	defer func() {
+		if errClose := f.Close(); errClose != nil {
+			log.Errorf("claude token storage: close token file error: %v", errClose)
+		}
+	}()
+
+	// Encode and write the token data as JSON
+	if err = json.NewEncoder(f).Encode(data); err != nil {
+		return fmt.Errorf("failed to write token to file: %w", err)
+	}
+	return nil
+}