fix: validate HTTP dates IPv6 URLs and parser errors

api/src/open-api/open-api.protocol.ts

@@ -1,5 +1,5 @@
 import { createHash, createHmac } from 'node:crypto';
-import { HttpException } from '@nestjs/common';
+import { BadRequestException, HttpException } from '@nestjs/common';
 import type { LookupFunction } from 'node:net';
 
 /** Keep the validated address pinned while honoring Node's all-address lookup contract. */
@@ -10,6 +10,60 @@ export function pinnedWebhookLookup(address: string, family: number): LookupFunc
   };
 }
 
+/** Validate calendar components before Date can normalize an impossible day. */
+export function parseOpenApiDate(value: string): Date {
+  const parts = /^(\d{4})-(\d{2})-(\d{2})(?:T(\d{2}):(\d{2})(?::(\d{2})(?:\.(\d{1,3}))?)?(Z|[+-]\d{2}:\d{2}))?$/.exec(
+    value,
+  );
+  if (parts) {
+    const year = Number(parts[1]);
+    const month = Number(parts[2]);
+    const day = Number(parts[3]);
+    const leap = year % 4 === 0 && (year % 100 !== 0 || year % 400 === 0);
+    const days = [31, leap ? 29 : 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
+    const zone = parts[8];
+    const validZone = !zone || zone === 'Z' || (Number(zone.slice(1, 3)) < 24 && Number(zone.slice(4)) < 60);
+    const date = new Date(value);
+    if (
+      month >= 1 &&
+      month <= 12 &&
+      day >= 1 &&
+      day <= days[month - 1] &&
+      Number(parts[4] ?? 0) < 24 &&
+      Number(parts[5] ?? 0) < 60 &&
+      Number(parts[6] ?? 0) < 60 &&
+      validZone &&
+      Number.isFinite(date.getTime())
+    )
+      return date;
+  }
+  throw new BadRequestException({ code: 'TIME_RANGE_INVALID', message: '时间必须为有效的ISO8601日期或带时区时间' });
+}
+
+export type OpenApiProblemResponse = {
+  setHeader(name: string, value: string): void;
+  status(code: number): { type(value: string): { send(body: unknown): void } };
+};
+
+export function sendOpenApiProblem(
+  response: OpenApiProblemResponse,
+  requestId: string,
+  failure: { status: number; code: string; message: string },
+) {
+  response.setHeader('X-Request-Id', requestId);
+  response
+    .status(failure.status)
+    .type('application/problem+json')
+    .send({
+      type: `https://cmpp-platform.local/problems/${failure.code.toLowerCase()}`,
+      title: failure.status >= 500 ? 'Internal Server Error' : 'Request failed',
+      status: failure.status,
+      code: failure.code,
+      detail: failure.message,
+      requestId,
+    });
+}
+
 /** v1 compatibility: an absent parsed body hashes as {}, never try alternate hashes. */
 export function openApiBodyHash(rawBody: Buffer | undefined, body: unknown) {
   return createHash('sha256')