pdf support implemented

This commit is contained in:
nek0 2017-10-31 09:56:54 +01:00
parent 61383bf719
commit 1f2c4970a4
3 changed files with 45 additions and 11 deletions

View File

@ -37,6 +37,9 @@ import Graphics.Svg
import Graphics.Rasterific.Svg
import Graphics.Text.TrueType
import Graphics.HsExif
import Graphics.Rendering.Cairo as Cairo
import Graphics.UI.Gtk.Poppler.Document
import Graphics.UI.Gtk.Poppler.Page
import Debug.Trace
@ -260,6 +263,32 @@ generateThumbs path uId aId mime = do
Just (nwidth, nheight)
(img, _) <- liftIO $ renderSvgDocument emptyFontCache scale 100 $ fromJust svg
return img
"application/pdf" -> do
curDir <- liftIO getCurrentDirectory
mpdf <- liftIO $ documentNewFromFile ("file://" ++ (curDir </> path)) Nothing
case mpdf of
Nothing -> error "Empty pdf"
Just pdf -> do
page0 <- liftIO $ documentGetPage pdf 0
(pw, ph) <- liftIO $ pageGetSize page0
let tempPath = FP.takeBaseName path ++ "_temp.png"
liftIO $ withImageSurface FormatARGB32 (floor pw) (floor ph) $
\surf -> do
renderWith surf $ do
setSourceRGB 1 1 1
Cairo.rectangle 0 0 pw ph
fill
pageRender page0
surfaceWriteToPNG surf tempPath
edynimg <- liftIO $ readPng tempPath
case edynimg of
Left err -> do
liftIO $ removeFile (FP.normalise tempPath)
error err
Right dynimg -> do
let img = convertRGBA8 dynimg
liftIO $ removeFile (FP.normalise tempPath)
return img
_ -> do
eimg <- liftIO $ readImage path
case eimg of
@ -318,17 +347,18 @@ generateThumbs path uId aId mime = do
checkCVE_2016_3714 :: FP.FilePath -> T.Text -> IO Bool
checkCVE_2016_3714 p m =
case m of
"image/jpeg" -> isJpeg p
"image/jpg" -> isJpeg p
"image/png" -> isPng p
"image/x-ms-bmp" -> isBmp p
"image/x-bmp" -> isBmp p
"image/bmp" -> isBmp p
"image/tiff" -> isTiff p
"image/tiff-fx" -> isTiff p
"image/svg+xml" -> return True -- TODO: have to check XML for that.
"image/gif" -> isGif p
_ -> return False
"image/jpeg" -> isJpeg p
"image/jpg" -> isJpeg p
"image/png" -> isPng p
"image/x-ms-bmp" -> isBmp p
"image/x-bmp" -> isBmp p
"image/bmp" -> isBmp p
"image/tiff" -> isTiff p
"image/tiff-fx" -> isTiff p
"image/svg+xml" -> return True -- TODO: have to check XML for that.
"image/gif" -> isGif p
"application/pdf" -> return True -- PDF is inherently insecure. can't check here.
_ -> return False
writeOnDrive :: FileInfo -> UserId -> AlbumId -> UploadSpec -> Handler FP.FilePath
writeOnDrive fil userId albumId spec = do

View File

@ -179,6 +179,8 @@ acceptedTypes =
, "image/tiff-fx"
-- SVG
, "image/svg+xml"
-- PDF
, "application/pdf"
]
iso8601 :: FormatTime t => t -> String

View File

@ -129,6 +129,8 @@ library
, JuicyPixels-scale-dct
, hsexif
, classy-prelude-yesod >= 1.0
, poppler
, cairo
-- svg stuff
, rasterific-svg >= 0.3.3
, svg-tree