File libgxps-CVE-2018-10733.patch of Package libgxps

diff --git a/libgxps/gxps-archive.c b/libgxps/gxps-archive.c
index b63efe2..fcdead4 100644
--- a/libgxps/gxps-archive.c
+++ b/libgxps/gxps-archive.c
@@ -358,9 +358,16 @@ gxps_archive_read_entry (GXPSArchive *archive,
 	gboolean      retval;
 
 	stream = gxps_archive_open (archive, path);
+
 	if (!stream)
-		/* TODO: Error */
+	{
+		g_set_error(error,
+    	            G_IO_ERROR,
+	                G_IO_ERROR_NOT_FOUND,
+	                "The entry '%s' was not found in archive",
+					path);
 		return FALSE;
+	}
 
 	entry_size = archive_entry_size (GXPS_ARCHIVE_INPUT_STREAM (stream)->entry);
 	if (entry_size <= 0) {
@@ -375,7 +382,7 @@ gxps_archive_read_entry (GXPSArchive *archive,
 		*buffer = g_malloc (buffer_size);
 		do {
 			bytes = g_input_stream_read (stream, &buf, BUFFER_SIZE, NULL, error);
-			if (*error != NULL) {
+			if (bytes < 0) {
 				g_free (*buffer);
 				g_object_unref (stream);
 
@@ -390,8 +397,14 @@ gxps_archive_read_entry (GXPSArchive *archive,
 			*bytes_read += bytes;
 		} while (bytes > 0);
 
-		if (*bytes_read == 0) {
-			/* TODO: Error */
+		if (*bytes_read == 0)
+		{
+			g_set_error(error,
+						G_IO_ERROR,
+						G_IO_ERROR_INVALID_DATA,
+						"The entry '%s' is empty in archive",
+						path);
+
 			g_free (*buffer);
 			g_object_unref (stream);
 			return FALSE;
@@ -421,10 +434,22 @@ gxps_archive_input_stream_read (GInputStream  *stream,
 				GError       **error)
 {
 	GXPSArchiveInputStream *istream = GXPS_ARCHIVE_INPUT_STREAM (stream);
+	gssize bytes_read;
 
 	if (g_cancellable_set_error_if_cancelled (cancellable, error))
 		return -1;
-	return archive_read_data (istream->zip->archive, buffer, count);
+
+	bytes_read = archive_read_data (istream->zip->archive, buffer, count);
+	if (bytes_read < 0)
+	{
+        g_set_error_literal (error,
+                             G_IO_ERROR,
+                             g_io_error_from_errno (archive_errno (istream->zip->archive)),
+                             archive_error_string (istream->zip->archive));
+        return -1;
+	}
+
+	return bytes_read;
 }
 
 static gssize
diff --git a/libgxps/gxps-fonts.c b/libgxps/gxps-fonts.c
index 882157d..843f860 100644
--- a/libgxps/gxps-fonts.c
+++ b/libgxps/gxps-fonts.c
@@ -220,20 +220,15 @@ gxps_fonts_new_font_face (GXPSArchive *zip,
 	cairo_font_face_t *font_face;
 	guchar            *font_data;
 	gsize              font_data_len;
-	gboolean           res;
 
-	res = gxps_archive_read_entry (zip, font_uri,
-				       &font_data, &font_data_len,
-				       error);
-	if (!res) {
-		g_set_error (error,
-			     GXPS_ERROR,
-			     GXPS_ERROR_SOURCE_NOT_FOUND,
-			     "Font source %s not found in archive",
-			     font_uri);
+	if(!gxps_archive_read_entry(zip,
+								font_uri,
+								&font_data, &font_data_len,
+                                error)) {
 		return NULL;
 	}
 
+
 	ft_face.font_data = font_data;
 	ft_face.font_data_len = (gssize)font_data_len;
 
diff --git a/libgxps/gxps-images.c b/libgxps/gxps-images.c
index 28e26b2..7b03d63 100644
--- a/libgxps/gxps-images.c
+++ b/libgxps/gxps-images.c
@@ -469,18 +469,15 @@ gxps_images_create_from_tiff (GXPSArchive *zip,
 	guchar          *data;
 	guchar          *p;
 
-	if (!gxps_archive_read_entry (zip, image_uri,
-				      &buffer.buffer,
-				      &buffer.buffer_len,
-				      error)) {
-		g_set_error (error,
-			     GXPS_ERROR,
-			     GXPS_ERROR_SOURCE_NOT_FOUND,
-			     "Image source %s not found in archive",
-			     image_uri);
+	if (!gxps_archive_read_entry(zip, 
+								 image_uri,
+								 &buffer.buffer,
+								 &buffer.buffer_len,
+								 error)) {
 		return NULL;
 	}
 
+
 	buffer.pos = 0;
 
 	_tiff_push_handlers ();