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multipleof4andClaude Opus 5.5
029b259f05
- free.direct-img.link serves only unrestricted (public domain/CC0) images from Openverse (license=cc0,pdm) and Wikimedia Commons (haslicense:unrestricted), with optional ?src=openverse|wikimedia - ?i=1..20 picks the i-th working image on both sites; broken links are skipped so every index is a different image - Openverse OAuth token is cached in KV and refreshed automatically - Skip Flickr "photo unavailable" placeholders (served with HTTP 200) - Free/indexed cache keys use uppercase prefixes; plain main-site keys are unchanged so existing cache entries stay valid - Update README, homepage, privacy policy and terms Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
20 lines
1.3 KiB
JavaScript
20 lines
1.3 KiB
JavaScript
// Flickr answers deleted photos with HTTP 200 and a "photo no longer available" image.
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// SHA-256 of that placeholder at every size suffix (same bytes for every deleted photo):
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const PLACEHOLDERS = new Set([
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"26b52b156ef2459dc8963a7f565a99f47ddeac36b8005443457fee419637ce85", // none (500x375)
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"e5028de2367c10d29ea66e45f7889085682316b2c8c52198c89e72c256de70a0", // _b _c _h _k _o (768x576)
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"4a071ae0f3b051a28b0d56c9987a3d18ee5f3839bfc996cc2369a4636cefb2e2", // _z (640x480)
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"44378872c6cd32ecb0525e9c10eaade1b8a0c7ccdbc57bdc22f108ad9642606c", // _w (400x300)
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"37f48b8788c06e2092a281bf852454918d7eac946bcb21012d6fd030609bd8b1", // _n (320x240)
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"b85fb922ab3515241a1cd666bc274523c1c9784022eeed880e9fb3d4174104ae", // _m (240x180)
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"632dffa72bf3c993e08e22ba938523b5a148ce5084ca07befda225adff0ef35c", // _q (150x150)
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"ef12e410eed533981d3a0c1f447c8093c3d33ef05c1c583addc494b8a4369fd1", // _t (100x75)
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"96c0e77be54767d1b7b9e2cc47df913fc23a9cc76dd4608e441dadaeffe057cb", // _s (75x75)
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]);
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export async function isFlickrPlaceholder(url, buffer) {
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if (!new URL(url).hostname.endsWith("staticflickr.com")) return false;
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const hash = [...new Uint8Array(await crypto.subtle.digest("SHA-256", buffer))].map(b => b.toString(16).padStart(2, "0")).join("");
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return PLACEHOLDERS.has(hash);
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}
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