fix(backend): reject malformed timestamp (#12554)

packages/backend/src/misc/id/aid.ts

@@ -34,3 +34,7 @@ export function parseAid(id: string): { date: Date; } {
 	const time = parseInt(id.slice(0, 8), 36) + TIME2000;
 	return { date: new Date(time) };
 }
+
+export function isSafeAidT(t: number): boolean {
+	return t > TIME2000;
+}

packages/backend/src/misc/id/aidx.ts

@@ -41,3 +41,7 @@ export function parseAidx(id: string): { date: Date; } {
 	const time = parseInt(id.slice(0, TIME_LENGTH), 36) + TIME2000;
 	return { date: new Date(time) };
 }
+
+export function isSafeAidxT(t: number): boolean {
+	return t > TIME2000;
+}

packages/backend/src/misc/id/meid.ts

@@ -38,3 +38,7 @@ export function parseMeid(id: string): { date: Date; } {
 		date: new Date(parseInt(id.slice(0, 12), 16) - 0x800000000000),
 	};
 }
+
+export function isSafeMeidT(t: number): boolean {
+	return t > 0;
+}

packages/backend/src/misc/id/meidg.ts

@@ -38,3 +38,7 @@ export function parseMeidg(id: string): { date: Date; } {
 		date: new Date(parseInt(id.slice(1, 12), 16)),
 	};
 }
+
+export function isSafeMeidgT(t: number): boolean {
+	return t > 0;
+}

packages/backend/src/misc/id/object-id.ts

@@ -38,3 +38,7 @@ export function parseObjectId(id: string): { date: Date; } {
 		date: new Date(parseInt(id.slice(0, 8), 16) * 1000),
 	};
 }
+
+export function isSafeObjectIdT(t: number): boolean {
+	return t > 0;
+}