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

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File libgxps-CVE-2018-10733.patch of Package libgxps (Revision 4c67cd6391f8f341fbc70cdb9c2f0461)

Currently displaying revision 4c67cd6391f8f341fbc70cdb9c2f0461 , Show latest

diff --git a/libgxps/gxps-archive.c b/libgxps/gxps-archive.c
index e763773..2851a65 100644
--- a/libgxps/gxps-archive.c
+++ b/libgxps/gxps-archive.c
@@ -406,9 +406,14 @@ gxps_archive_read_entry (GXPSArchive *archive,
 	gboolean      retval;
 
 	stream = gxps_archive_open (archive, path);
-	if (!stream)
-		/* TODO: Error */
+
+	if (!stream) {
+		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) {
@@ -423,7 +428,7 @@ 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);
 
@@ -441,7 +446,12 @@ gxps_archive_read_entry (GXPSArchive *archive,
 		g_object_unref (stream);
 
 		if (*bytes_read == 0) {
-			/* TODO: Error */
+
+			g_set_error(error,
+						G_IO_ERROR,
+						G_IO_ERROR_INVALID_DATA,
+						"The entry '%s' is empty in archive", path);
+
 			g_free (*buffer);
 			return FALSE;
 		}
@@ -507,17 +517,26 @@ gxps_archive_input_stream_read (GInputStream  *stream,
 				GError       **error)
 {
 	GXPSArchiveInputStream *istream = GXPS_ARCHIVE_INPUT_STREAM (stream);
-        gssize                  bytes_read;
+    gssize                  bytes_read;
 
 	if (g_cancellable_set_error_if_cancelled (cancellable, error))
 		return -1;
 
-        bytes_read = archive_read_data (istream->zip->archive, buffer, count);
-        if (bytes_read == 0 && istream->is_interleaved && !gxps_archive_input_stream_is_last_piece (istream)) {
-                /* Read next piece */
-                gxps_archive_input_stream_next_piece (istream);
-                bytes_read = gxps_archive_input_stream_read (stream, buffer, count, cancellable, error);
-        }
+    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;
+    }
+
+	if (bytes_read == 0 && istream->is_interleaved && !gxps_archive_input_stream_is_last_piece (istream)) {
+            /* Read next piece */
+            gxps_archive_input_stream_next_piece (istream);
+            bytes_read = gxps_archive_input_stream_read (stream, buffer, count, cancellable, error);
+    }
 
 	return bytes_read;
 }
diff --git a/libgxps/gxps-fonts.c b/libgxps/gxps-fonts.c
index 882157d..13bf918 100644
--- a/libgxps/gxps-fonts.c
+++ b/libgxps/gxps-fonts.c
@@ -220,20 +220,16 @@ 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);
-		return NULL;
+	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 98c7052..7f48dca 100644
--- a/libgxps/gxps-images.c
+++ b/libgxps/gxps-images.c
@@ -742,18 +742,14 @@ 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);
-		return NULL;
+	if (!gxps_archive_read_entry (  zip, image_uri,
+									&buffer.buffer,
+									&buffer.buffer_len,
+									error)) {
+			return NULL;
 	}
 
+
 	buffer.pos = 0;
 
 	_tiff_push_handlers ();

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File libgxps-CVE-2018-10733.patch of Package libgxps (Revision 4c67cd6391f8f341fbc70cdb9c2f0461)

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