fix: session validation fixes

src/routes/account.tsx

@@ -1261,7 +1261,7 @@ function ActiveSessions(props: { userId: string }) {
                     </Show>
                     <div>
                       Last active:{" "}
-                      {formatDate(session.lastRotatedAt || session.createdAt)}
+                      {formatDate(session.lastActiveAt || session.createdAt)}
                     </div>
                     <Show when={session.expiresAt}>
                       <div class="text-xs">

src/server/api/routers/user.ts

@@ -419,11 +419,11 @@ export const userRouter = createTRPCRouter({
 
     const conn = ConnectionFactory();
     const res = await conn.execute({
-      sql: `SELECT session_id, token_family, created_at, expires_at, last_rotated_at, 
-            rotation_count, client_ip, user_agent 
+      sql: `SELECT session_id, token_family, created_at, expires_at, last_active_at, 
+            rotation_count, ip_address, user_agent 
             FROM Session 
             WHERE user_id = ? AND revoked = 0 AND expires_at > datetime('now')
-            ORDER BY last_rotated_at DESC`,
+            ORDER BY last_active_at DESC`,
       args: [userId]
     });
 
@@ -435,9 +435,9 @@ export const userRouter = createTRPCRouter({
       tokenFamily: row.token_family,
       createdAt: row.created_at,
       expiresAt: row.expires_at,
-      lastRotatedAt: row.last_rotated_at,
+      lastActiveAt: row.last_active_at,
       rotationCount: row.rotation_count,
-      clientIp: row.client_ip,
+      clientIp: row.ip_address,
       userAgent: row.user_agent,
       isCurrent: currentSession?.sessionId === row.session_id
     }));

src/server/security.ts

@@ -349,19 +349,33 @@ export const RATE_LIMITS = CONFIG_RATE_LIMITS;
 
 /**
  * Rate limiting middleware for login operations
+ * In development, skips IP rate limiting to avoid self-DoS
+ * For unknown IPs in production, uses stricter shared limits
  */
 export async function rateLimitLogin(
   email: string,
   clientIP: string,
   event?: H3Event
 ): Promise<void> {
+  // In development, skip IP rate limiting to avoid self-DoS
+  if (env.NODE_ENV !== "development") {
+    const isUnknownIP = clientIP === "unknown";
+    const ipIdentifier = isUnknownIP
+      ? `login:unknown-ip`
+      : `login:ip:${clientIP}`;
+    const ipLimit = isUnknownIP
+      ? { maxAttempts: 3, windowMs: RATE_LIMITS.LOGIN_IP.windowMs } // Stricter for unknown IPs
+      : RATE_LIMITS.LOGIN_IP;
+
     await checkRateLimit(
-    `login:ip:${clientIP}`,
-    RATE_LIMITS.LOGIN_IP.maxAttempts,
-    RATE_LIMITS.LOGIN_IP.windowMs,
+      ipIdentifier,
+      ipLimit.maxAttempts,
+      ipLimit.windowMs,
       event
     );
+  }
 
+  // Always rate limit by email in all environments
   await checkRateLimit(
     `login:email:${email}`,
     RATE_LIMITS.LOGIN_EMAIL.maxAttempts,
@@ -372,48 +386,87 @@ export async function rateLimitLogin(
 
 /**
  * Rate limiting middleware for password reset
+ * In development, skips IP rate limiting to avoid self-DoS
+ * For unknown IPs in production, uses stricter shared limits
  */
 export async function rateLimitPasswordReset(
   clientIP: string,
   event?: H3Event
 ): Promise<void> {
+  // In development, skip IP rate limiting to avoid self-DoS
+  if (env.NODE_ENV !== "development") {
+    const isUnknownIP = clientIP === "unknown";
+    const ipIdentifier = isUnknownIP
+      ? `password-reset:unknown-ip`
+      : `password-reset:ip:${clientIP}`;
+    const ipLimit = isUnknownIP
+      ? { maxAttempts: 2, windowMs: RATE_LIMITS.PASSWORD_RESET_IP.windowMs } // Stricter for unknown IPs
+      : RATE_LIMITS.PASSWORD_RESET_IP;
+
     await checkRateLimit(
-    `password-reset:ip:${clientIP}`,
-    RATE_LIMITS.PASSWORD_RESET_IP.maxAttempts,
-    RATE_LIMITS.PASSWORD_RESET_IP.windowMs,
+      ipIdentifier,
+      ipLimit.maxAttempts,
+      ipLimit.windowMs,
       event
     );
   }
+}
 
 /**
  * Rate limiting middleware for registration
+ * In development, skips IP rate limiting to avoid self-DoS
+ * For unknown IPs in production, uses stricter shared limits
  */
 export async function rateLimitRegistration(
   clientIP: string,
   event?: H3Event
 ): Promise<void> {
+  // In development, skip IP rate limiting to avoid self-DoS
+  if (env.NODE_ENV !== "development") {
+    const isUnknownIP = clientIP === "unknown";
+    const ipIdentifier = isUnknownIP
+      ? `registration:unknown-ip`
+      : `registration:ip:${clientIP}`;
+    const ipLimit = isUnknownIP
+      ? { maxAttempts: 2, windowMs: RATE_LIMITS.REGISTRATION_IP.windowMs } // Stricter for unknown IPs
+      : RATE_LIMITS.REGISTRATION_IP;
+
     await checkRateLimit(
-    `registration:ip:${clientIP}`,
-    RATE_LIMITS.REGISTRATION_IP.maxAttempts,
-    RATE_LIMITS.REGISTRATION_IP.windowMs,
+      ipIdentifier,
+      ipLimit.maxAttempts,
+      ipLimit.windowMs,
       event
     );
   }
+}
 
 /**
  * Rate limiting middleware for email verification
+ * In development, skips IP rate limiting to avoid self-DoS
+ * For unknown IPs in production, uses stricter shared limits
  */
 export async function rateLimitEmailVerification(
   clientIP: string,
   event?: H3Event
 ): Promise<void> {
+  // In development, skip IP rate limiting to avoid self-DoS
+  if (env.NODE_ENV !== "development") {
+    const isUnknownIP = clientIP === "unknown";
+    const ipIdentifier = isUnknownIP
+      ? `email-verification:unknown-ip`
+      : `email-verification:ip:${clientIP}`;
+    const ipLimit = isUnknownIP
+      ? { maxAttempts: 3, windowMs: RATE_LIMITS.EMAIL_VERIFICATION_IP.windowMs } // Stricter for unknown IPs
+      : RATE_LIMITS.EMAIL_VERIFICATION_IP;
+
     await checkRateLimit(
-    `email-verification:ip:${clientIP}`,
-    RATE_LIMITS.EMAIL_VERIFICATION_IP.maxAttempts,
-    RATE_LIMITS.EMAIL_VERIFICATION_IP.windowMs,
+      ipIdentifier,
+      ipLimit.maxAttempts,
+      ipLimit.windowMs,
       event
     );
   }
+}
 
 export const ACCOUNT_LOCKOUT = CONFIG_ACCOUNT_LOCKOUT;
 export async function checkAccountLockout(userId: string): Promise<{

src/server/security/rate-limit.test.ts

@@ -416,6 +416,79 @@ describe("Rate Limiting", () => {
     });
   });
 
+  describe("Unknown IP Handling", () => {
+    it("should handle 'unknown' IP in development without rate limiting", async () => {
+      // In development, IP rate limits should be skipped
+      // This test assumes NODE_ENV is 'development' or 'test'
+      const unknownIP = "unknown";
+      const email = `test-${Date.now()}@example.com`;
+
+      // Should allow many login attempts in development with unknown IP
+      // (only email rate limit applies)
+      for (let i = 0; i < RATE_LIMITS.LOGIN_EMAIL.maxAttempts; i++) {
+        const testEmail = `test-${Date.now()}-${i}@example.com`;
+        await rateLimitLogin(testEmail, unknownIP);
+      }
+
+      // Should be able to continue with different emails (no IP limit in dev)
+      await rateLimitLogin(`final-${Date.now()}@example.com`, unknownIP);
+    });
+
+    it("should still enforce email rate limits with unknown IP", async () => {
+      const unknownIP = "unknown";
+      const email = `test-${Date.now()}@example.com`;
+
+      // Use up email rate limit
+      for (let i = 0; i < RATE_LIMITS.LOGIN_EMAIL.maxAttempts; i++) {
+        await rateLimitLogin(email, unknownIP);
+      }
+
+      // Next attempt should fail due to email limit
+      try {
+        await rateLimitLogin(email, unknownIP);
+        expect.unreachable("Should have thrown");
+      } catch (error) {
+        expect(error).toBeInstanceOf(TRPCError);
+      }
+    });
+
+    it("should handle unknown IP in password reset", async () => {
+      const unknownIP = "unknown";
+
+      // In development, should allow many attempts (no IP limit)
+      for (let i = 0; i < 10; i++) {
+        await rateLimitPasswordReset(unknownIP);
+      }
+
+      // Should not throw in development
+      expect(true).toBe(true);
+    });
+
+    it("should handle unknown IP in registration", async () => {
+      const unknownIP = "unknown";
+
+      // In development, should allow many attempts (no IP limit)
+      for (let i = 0; i < 10; i++) {
+        await rateLimitRegistration(unknownIP);
+      }
+
+      // Should not throw in development
+      expect(true).toBe(true);
+    });
+
+    it("should handle unknown IP in email verification", async () => {
+      const unknownIP = "unknown";
+
+      // In development, should allow many attempts (no IP limit)
+      for (let i = 0; i < 10; i++) {
+        await rateLimitEmailVerification(unknownIP);
+      }
+
+      // Should not throw in development
+      expect(true).toBe(true);
+    });
+  });
+
   describe("Rate Limit Configuration", () => {
     it("should have reasonable limits configured", () => {
       // Login should be more permissive than registration

src/server/session-helpers.ts

@@ -185,19 +185,22 @@ export async function getAuthSession(
     // In SSR contexts where headers may already be sent, use unsealSession directly
     if (skipUpdate) {
       const { unsealSession } = await import("vinxi/http");
-      const cookieValue = getCookie(event, sessionConfig.cookieName);
+      const cookieName = sessionConfig.name || "session";
+      const cookieValue = getCookie(event, cookieName);
       if (!cookieValue) {
         return null;
       }
 
       try {
-        const data = await unsealSession<SessionData>(
-          event,
-          sessionConfig,
-          cookieValue
-        );
+        // unsealSession returns Partial<Session<T>>, not T directly
+        const session = await unsealSession(event, sessionConfig, cookieValue);
 
-        if (!data || !data.userId || !data.sessionId) {
+        if (!session?.data || typeof session.data !== "object") {
+          return null;
+        }
+
+        const data = session.data as SessionData;
+        if (!data.userId || !data.sessionId) {
           return null;
         }