1 files changed, 31 insertions, 3 deletions

diff --git a/src/lib/strings/url-helpers.ts b/src/lib/strings/url-helpers.ts
index ba2cdb39b..820311e4e 100644
--- a/src/lib/strings/url-helpers.ts
+++ b/src/lib/strings/url-helpers.ts
@@ -3,6 +3,8 @@ import {BSKY_SERVICE} from 'lib/constants'
 import TLDs from 'tlds'
 import psl from 'psl'
 
+export const BSKY_APP_HOST = 'https://bsky.app'
+
 export function isValidDomain(str: string): boolean {
   return !!TLDs.find(tld => {
     let i = str.lastIndexOf(tld)
@@ -67,8 +69,21 @@ export function isBskyAppUrl(url: string): boolean {
   return url.startsWith('https://bsky.app/')
 }
 
+export function isRelativeUrl(url: string): boolean {
+  return /^\/[^/]/.test(url)
+}
+
+export function isBskyRSSUrl(url: string): boolean {
+  return (
+    (url.startsWith('https://bsky.app/') || isRelativeUrl(url)) &&
+    /\/rss\/?$/.test(url)
+  )
+}
+
 export function isExternalUrl(url: string): boolean {
-  return !isBskyAppUrl(url) && url.startsWith('http')
+  const external = !isBskyAppUrl(url) && url.startsWith('http')
+  const rss = isBskyRSSUrl(url)
+  return external || rss
 }
 
 export function isBskyPostUrl(url: string): boolean {
@@ -148,6 +163,11 @@ export function feedUriToHref(url: string): string {
 export function linkRequiresWarning(uri: string, label: string) {
   const labelDomain = labelToDomain(label)
 
+  // If the uri started with a / we know it is internal.
+  if (isRelativeUrl(uri)) {
+    return false
+  }
+
   let urip
   try {
     urip = new URL(uri)
@@ -156,9 +176,12 @@ export function linkRequiresWarning(uri: string, label: string) {
   }
 
   const host = urip.hostname.toLowerCase()
-
   // Hosts that end with bsky.app or bsky.social should be trusted by default.
-  if (host.endsWith('bsky.app') || host.endsWith('bsky.social')) {
+  if (
+    host.endsWith('bsky.app') ||
+    host.endsWith('bsky.social') ||
+    host.endsWith('blueskyweb.xyz')
+  ) {
     // if this is a link to internal content,
     // warn if it represents itself as a URL to another app
     return !!labelDomain && labelDomain !== host && isPossiblyAUrl(labelDomain)
@@ -214,3 +237,8 @@ export function splitApexDomain(hostname: string): [string, string] {
     hostnamep.domain,
   ]
 }
+
+export function createBskyAppAbsoluteUrl(path: string): string {
+  const sanitizedPath = path.replace(BSKY_APP_HOST, '').replace(/^\/+/, '')
+  return `${BSKY_APP_HOST.replace(/\/$/, '')}/${sanitizedPath}`
+}