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fix: resolve AP object URL before authorize_interaction redirect

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The "Also on fediverse" widget was passing the blog post URL directly
to authorize_interaction. If a static file server intercepts the request
before Node.js, the remote instance gets HTML instead of AP JSON and
shows "Could not connect to the given address".

Now fetches /activitypub/api/ap-url first to get the Fedify-served AP
object URL (/activitypub/objects/…), which is always routed to Node.js
and reliably returns AP JSON. Falls back to the original URL on error.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
svemagie
2026-03-15 15:00:16 +01:00
parent 02b68bdb10
commit 2e67156bfd
1 changed files with 14 additions and 2 deletions
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16
js/fediverse-interact.js
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@@ -142,11 +142,23 @@ document.addEventListener("alpine:init", () => {
else if (!event.shiftKey && document.activeElement === last) { event.preventDefault(); first.focus(); }
},
redirectToInstance(domain) {
async redirectToInstance(domain) {
if (this.mode === "share") {
window.location.href = `https://${domain}/share?text=${encodeURIComponent(this.targetUrl)}`;
} else {
window.location.href = `https://${domain}/authorize_interaction?uri=${encodeURIComponent(this.targetUrl)}`;
// Resolve the blog post URL to its Fedify-served AP object URL.
// Fedify URLs (/activitypub/objects/…) are always routed to Node.js,
// ensuring reliable AP content negotiation when the remote instance
// fetches the URI to process authorize_interaction.
let interactUrl = this.targetUrl;
try {
const resp = await fetch(`/activitypub/api/ap-url?post=${encodeURIComponent(this.targetUrl)}`);
if (resp.ok) {
const data = await resp.json();
if (data.apUrl) interactUrl = data.apUrl;
}
} catch { /* network error — fall back to blog post URL */ }
window.location.href = `https://${domain}/authorize_interaction?uri=${encodeURIComponent(interactUrl)}`;
}
},
}));