Changing security.txt to use github security advisories page. (#2334)

* Changing security.txt to use github security advisories page.

- Fixes #2332

* Adding an expires date, one year from build date.

* Add a year to the build date in code.

* Fix dev.dockerfile build date.

---------

Co-authored-by: SleeplessOne1917 <28871516+SleeplessOne1917@users.noreply.github.com>

Dockerfile

@@ -30,6 +30,7 @@ COPY .git .git
 
 # Set UI version 
 RUN echo "export const VERSION = '$(git describe --tag)';" > "src/shared/version.ts"
+RUN echo "export const BUILD_DATE_ISO8601 = '$(date -u +"%Y-%m-%dT%H:%M:%SZ")';" > "src/shared/build-date.ts"
 
 RUN pnpm i
 RUN pnpm prebuild:prod

dev.dockerfile

@@ -25,6 +25,7 @@ COPY .git .git
 
 # Set UI version 
 RUN echo "export const VERSION = 'dev';" > "src/shared/version.ts"
+RUN echo "export const BUILD_DATE_ISO8601 = '$(date -u +"%Y-%m-%dT%H:%M:%SZ")';" > "src/shared/build-date.ts"
 
 RUN pnpm i --prefer-offline
 RUN pnpm build:dev

src/server/handlers/security-handler.ts

@@ -1,17 +1,20 @@
 import type { Response } from "express";
+import { BUILD_DATE_ISO8601 } from "../../shared/build-date";
+import { parseISO } from "date-fns";
 
 export default async ({ res }: { res: Response }) => {
+  const buildDatePlusYear = parseISO(BUILD_DATE_ISO8601);
+
+  // Add a year to the build date
+  buildDatePlusYear.setFullYear(new Date().getFullYear() + 1);
+
+  const yearFromNow = buildDatePlusYear.toISOString();
+
   res.setHeader("content-type", "text/plain; charset=utf-8");
 
   res.send(
-    `Contact: mailto:security@lemmy.ml
-  Contact: mailto:admin@` +
-      process.env.LEMMY_UI_LEMMY_EXTERNAL_HOST +
-      `
-  Contact: mailto:security@` +
-      process.env.LEMMY_UI_LEMMY_EXTERNAL_HOST +
-      `
-  Expires: 2024-01-01T04:59:00.000Z
+    `Contact: https://github.com/LemmyNet/lemmy-ui/security/advisories/new
+  Expires: ${yearFromNow}
   `,
   );
 };

src/shared/build-date.ts

@@ -0,0 +1 @@
+export const BUILD_DATE_ISO8601 = "2024-01-22T13:58:48Z";