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fix: infer trusted MIME for tweet images

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archivr-qa 2026-08-24 15:29:39 +02:00
parent 492b1a3168
commit b4f6b9fc69
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1 changed files with 30 additions and 3 deletions
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33
crates/archivr-core/src/capture.rs
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@ -951,7 +951,10 @@ fn register_tweet_artifacts(
})?;
for (role, raw_relpath) in tweet_raw_artifacts(&json_str)? {
let raw_path = PathBuf::from(&raw_relpath);
let blob = blob_record_for_raw_relpath(store_path, &raw_path)?;
let mut blob = blob_record_for_raw_relpath(store_path, &raw_path)?;
if role == "media" {
blob.mime_type = tweet_media_image_mime(blob.extension.as_deref());
}
let blob_id = database::upsert_blob(conn, &blob)?;
database::add_entry_artifact(
conn,
@ -1030,6 +1033,22 @@ fn record_tweet_entry(
Ok(entry)
}
/// Trusted image MIME types emitted by the X downloader's media paths.
///
/// Tweet JSON has no MIME field for ordinary downloaded media. Restricting this
/// inference to the explicit image extensions keeps binary video/audio and
/// unknown extensions out of multimodal summary input.
fn tweet_media_image_mime(extension: Option<&str>) -> Option<String> {
match extension?.to_ascii_lowercase().as_str() {
"jpg" | "jpeg" => Some("image/jpeg".to_string()),
"png" => Some("image/png".to_string()),
"webp" => Some("image/webp".to_string()),
"gif" => Some("image/gif".to_string()),
"avif" => Some("image/avif".to_string()),
_ => None,
}
}
fn tweet_raw_artifacts(tweet_json: &str) -> Result<Vec<(String, String)>> {
let regex = regex::Regex::new(r#""(avatar_local_path|local_path)": "([^"\n]+)""#)?;
let mut seen = HashSet::new();
@ -3025,7 +3044,7 @@ mod tests {
.join("raw")
.join("c")
.join("d")
.join("cdef01.mp4"),
.join("cdef01.jpg"),
b"media",
)
.unwrap();
@ -3033,7 +3052,7 @@ mod tests {
store_path.join("raw_tweets").join("tweet-123.json"),
r#"{
"author": { "avatar_local_path": "raw/a/b/abcdef.jpg" },
"entities": { "media": [{ "local_path": "raw/c/d/cdef01.mp4" }] }
"entities": { "media": [{ "local_path": "raw/c/d/cdef01.jpg" }] }
}"#,
)
.unwrap();
@ -3088,6 +3107,14 @@ mod tests {
assert_eq!(artifact_count, 3);
assert_eq!(blob_count, 2);
let media_mime: Option<String> = conn
.query_row(
"SELECT b.mime_type FROM entry_artifacts ea JOIN blobs b ON b.id = ea.blob_id WHERE ea.entry_id = ?1 AND ea.artifact_role = 'media'",
[entry.id],
|row| row.get(0),
)
.unwrap();
assert_eq!(media_mime.as_deref(), Some("image/jpeg"));
assert_eq!(run_status, "completed");
assert!(store_path.join(&entry.structured_root_relpath).is_dir());