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69 lines
3.3 KiB
Go
69 lines
3.3 KiB
Go
package contracts
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import (
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"context"
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"time"
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)
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// AuthService handles wallet-based authentication and authorization.
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// Provides nonce generation, signature verification, JWT lifecycle management,
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// and application registration for the gateway.
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type AuthService interface {
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// CreateNonce generates a cryptographic nonce for wallet authentication.
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// The nonce is valid for a limited time and used to prevent replay attacks.
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// wallet is the wallet address, purpose describes the nonce usage,
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// and namespace isolates nonces across different contexts.
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CreateNonce(ctx context.Context, wallet, purpose, namespace string) (string, error)
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// VerifySignature validates a cryptographic signature from a wallet.
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// Supports multiple blockchain types (ETH, SOL) for signature verification.
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// Returns true if the signature is valid for the given nonce.
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VerifySignature(ctx context.Context, wallet, nonce, signature, chainType string) (bool, error)
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// IssueTokens generates a new access token and refresh token pair.
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// Access tokens are short-lived (typically 15 minutes).
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// Refresh tokens are long-lived (typically 30 days).
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// Returns: accessToken, refreshToken, expirationUnix, error.
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IssueTokens(ctx context.Context, wallet, namespace string) (string, string, int64, error)
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// RefreshToken validates a refresh token and issues a new access token.
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// Returns: newAccessToken, subject (wallet), expirationUnix, error.
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RefreshToken(ctx context.Context, refreshToken, namespace string) (string, string, int64, error)
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// RevokeToken invalidates a refresh token or all tokens for a subject.
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// If token is provided, revokes that specific token.
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// If all is true and subject is provided, revokes all tokens for that subject.
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RevokeToken(ctx context.Context, namespace, token string, all bool, subject string) error
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// ParseAndVerifyJWT validates a JWT access token and returns its claims.
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// Verifies signature, expiration, and issuer.
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ParseAndVerifyJWT(token string) (*JWTClaims, error)
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// GenerateJWT creates a new signed JWT with the specified claims and TTL.
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// Returns: token, expirationUnix, error.
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GenerateJWT(namespace, subject string, ttl time.Duration) (string, int64, error)
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// RegisterApp registers a new client application with the gateway.
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// Returns an application ID that can be used for OAuth flows.
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RegisterApp(ctx context.Context, wallet, namespace, name, publicKey string) (string, error)
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// GetOrCreateAPIKey retrieves an existing API key or creates a new one.
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// API keys provide programmatic access without interactive authentication.
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GetOrCreateAPIKey(ctx context.Context, wallet, namespace string) (string, error)
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// ResolveNamespaceID ensures a namespace exists and returns its internal ID.
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// Creates the namespace if it doesn't exist.
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ResolveNamespaceID(ctx context.Context, namespace string) (interface{}, error)
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}
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// JWTClaims represents the claims contained in a JWT access token.
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type JWTClaims struct {
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Iss string `json:"iss"` // Issuer
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Sub string `json:"sub"` // Subject (wallet address)
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Aud string `json:"aud"` // Audience
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Iat int64 `json:"iat"` // Issued At
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Nbf int64 `json:"nbf"` // Not Before
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Exp int64 `json:"exp"` // Expiration
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Namespace string `json:"namespace"` // Namespace isolation
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}
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