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send: stream media downloads with hard size caps

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download_to_temp now uses download_media_limited: non-photos abort the
moment the 10 MiB upload cap is crossed mid-stream (no more full-body
buffering before the size check), photos cap at the 512 MiB decode
budget, and the ugoira frame zip gets a 512 MiB cap. MediaTooLarge
routes to the existing smaller-URL fallback.
This commit is contained in:
YoursFunny
2026-08-08 20:03:14 +08:00
parent f6df3e28cb
commit d61dba5096
3 changed files with 16 additions and 9 deletions
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crates/xmedia-bot/src/photo.rs
+3 -2
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@@ -26,8 +26,9 @@ pub const PHOTO_TARGET_DIMENSION_SUM: u32 = 9900;
/// to a smaller media URL instead.
pub const MAX_UPLOAD_BYTES: u64 = 10 * 1024 * 1024;
/// Decode budget (bytes): a larger intermediate buffer is not worth the peak
/// memory; the photo degrades to the smaller URL instead.
const MAX_DECODE_BYTES: u64 = 512 * 1024 * 1024;
/// memory; the photo degrades to the smaller URL instead. Also the cap for
/// downloading photos in the send fallback (they must be downloaded whole).
pub(crate) const MAX_DECODE_BYTES: u64 = 512 * 1024 * 1024;
/// JPEG output quality (1-100).
const JPEG_QUALITY: u8 = 90;