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Check browser support before returning webp pictures

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This commit is contained in:
Thomas Sileo 2022-12-11 16:15:25 +01:00
parent cad78fe5e8
commit 7621a19489
1 changed files with 23 additions and 11 deletions
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34
app/main.py
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@ -80,8 +80,8 @@ from app.utils.highlight import HIGHLIGHT_CSS_HASH
from app.utils.url import check_url
from app.webfinger import get_remote_follow_template
# Only images <1MB will be cached, so 64MB of data will be cached
_RESIZED_CACHE: MutableMapping[tuple[str, int], tuple[bytes, str, Any]] = LFUCache(64)
# Only images <1MB will be cached, so 32MB of data will be cached
_RESIZED_CACHE: MutableMapping[tuple[str, int], tuple[bytes, str, Any]] = LFUCache(32)
# TODO(ts):
@ -1290,12 +1290,14 @@ async def serve_proxy_media_resized(
if size not in {50, 740}:
raise ValueError("Unsupported size")
is_webp_supported = "image/webp" in request.headers.get("accept")
# Decode the base64-encoded URL
url = base64.urlsafe_b64decode(encoded_url).decode()
check_url(url)
media.verify_proxied_media_sig(exp, url, sig)
if cached_resp := _RESIZED_CACHE.get((url, size)):
if (cached_resp := _RESIZED_CACHE.get((url, size))) and is_webp_supported:
resized_content, resized_mimetype, resp_headers = cached_resp
return PlainTextResponse(
resized_content,
@ -1343,10 +1345,10 @@ async def serve_proxy_media_resized(
is_webp = False
try:
resized_buf = BytesIO()
i.save(resized_buf, format="webp")
is_webp = True
i.save(resized_buf, format="webp" if is_webp_supported else i.format)
is_webp = is_webp_supported
except Exception:
logger.exception("Failed to convert to webp")
logger.exception("Failed to create thumbnail")
resized_buf = BytesIO()
i.save(resized_buf, format=i.format)
resized_buf.seek(0)
@ -1404,6 +1406,7 @@ async def serve_attachment(
@app.get("/attachments/thumbnails/{content_hash}/{filename}")
async def serve_attachment_thumbnail(
request: Request,
content_hash: str,
filename: str,
db_session: AsyncSession = Depends(get_db_session),
@ -1418,11 +1421,20 @@ async def serve_attachment_thumbnail(
if not upload or not upload.has_thumbnail:
raise HTTPException(status_code=404)
return FileResponse(
UPLOAD_DIR / (content_hash + "_resized"),
media_type="image/webp",
headers={"Cache-Control": "max-age=31536000"},
)
is_webp_supported = "image/webp" in request.headers.get("accept")
if is_webp_supported:
return FileResponse(
UPLOAD_DIR / (content_hash + "_resized"),
media_type="image/webp",
headers={"Cache-Control": "max-age=31536000"},
)
else:
return FileResponse(
UPLOAD_DIR / content_hash,
media_type=upload.content_type,
headers={"Cache-Control": "max-age=31536000"},
)
@app.get("/robots.txt", response_class=PlainTextResponse)