Bug workaround for getSize of PDF

etherpad/src/plugins/imageConvert/getSize.sh

@@ -5,7 +5,39 @@ page="$2"
 mime="$(file -L -b -i "$filename" | sed -e "s+;.*++g")"
 
 if [ "$mime" == "application/pdf" ]; then
-  pdfinfo -f $page -l $page "$filename" | grep "Page.*size:" | sed -e "s+Page.*size: *\([0-9.]*\) x \([0-9.]*\) .*+\1\n\2+g"
+  orderToOrientation () {
+    read width
+    read height
+    if ((height > width)); then
+      echo "portrait";
+    else
+      echo "landscape";
+    fi
+  }
+
+  getPageOrientation () {
+    {
+      tmp="$(mktemp)"
+      pdftoppm -png -f 1 -l 1 -scale-to 200 "$1" "$tmp"
+      identify -format "%[fx:w]\n%[fx:h]" "$tmp"*.png
+      rm "$tmp"*
+    } | orderToOrientation
+  }
+
+  SHOULD_BE_ORIENTATION="$(getPageOrientation "$filename")"
+
+  pdfinfo -f $page -l $page "$filename" | grep "Page.*size:" | sed -e "s+Page.*size: *\([0-9.]*\) x \([0-9.]*\) .*+\1\n\2+g" | {
+    read width
+    read height
+
+    IS_ORIENTATION="$({ echo "$width"; echo "$height"; } | orderToOrientation)"
+
+    if [ "$SHOULD_BE_ORIENTATION" == "$IS_ORIENTATION" ]; then
+      echo "$width"; echo "$height";
+    else
+      echo "$height"; echo "$width"; 
+    fi
+  }
 else
   identify -format "%[fx:w]\n%[fx:h]" "$filename[$page]"
 fi