Moved the frame_data structures and functions from packet.{h,c} to

frame_data{h,c}.  Added a frame_data_init to be called by epan_init.

svn path=/trunk/; revision=3223

1 files changed, 155 insertions, 0 deletions

diff --git a/epan/frame_data.c b/epan/frame_data.c
new file mode 100644
index 0000000000..c2602a5b47
--- /dev/null
+++ b/epan/frame_data.c
@@ -0,0 +1,155 @@
+/* frame_data.c
+ * Routines for packet disassembly
+ *
+ * $Id: frame_data.c,v 1.1 2001/04/01 04:11:50 hagbard Exp $
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@zing.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+
+#include "frame_data.h"
+#include "packet.h"
+
+#include <glib.h>
+
+/* Protocol-specific data attached to a frame_data structure - protocol
+   index and opaque pointer. */
+typedef struct _frame_proto_data {
+  int proto;
+  void *proto_data;
+} frame_proto_data;
+
+static GMemChunk *frame_proto_data_area = NULL;
+
+/* 
+ * Free up any space allocated for frame proto data areas and then 
+ * allocate a new area.
+ *
+ * We can free the area, as the structures it contains are pointed to by
+ * frames, that will be freed as well.
+ */
+static void
+packet_init_protocol(void)
+{
+
+  if (frame_proto_data_area)
+    g_mem_chunk_destroy(frame_proto_data_area);
+
+  frame_proto_data_area = g_mem_chunk_new("frame_proto_data_area",
+					  sizeof(frame_proto_data),
+					  20 * sizeof(frame_proto_data), /* FIXME*/
+					  G_ALLOC_ONLY);
+
+}
+
+void
+frame_data_init(void)
+{
+  	register_init_routine(&packet_init_protocol);
+}
+
+void 
+frame_data_cleanup(void)
+{
+  /* this function intentionally left blank :) */
+}
+
+/* XXX - I declared this static, because it only seems to be used by
+ * p_get_proto_data and p_add_proto_data
+ */
+static gint p_compare(gconstpointer a, gconstpointer b)
+{
+
+  if (((frame_proto_data *)a) -> proto > ((frame_proto_data *)b) -> proto)
+    return 1;
+  else if (((frame_proto_data *)a) -> proto == ((frame_proto_data *)b) -> proto)
+    return 0;
+  else
+    return -1;
+
+}
+
+
+void
+p_add_proto_data(frame_data *fd, int proto, void *proto_data)
+{
+  frame_proto_data *p1 = g_mem_chunk_alloc(frame_proto_data_area);
+ 
+  g_assert(p1 != NULL);
+
+  p1 -> proto = proto;
+  p1 -> proto_data = proto_data;
+
+  /* Add it to the GSLIST */
+
+  fd -> pfd = g_slist_insert_sorted(fd -> pfd,
+				    (gpointer *)p1,
+				    p_compare);
+
+}
+
+void *
+p_get_proto_data(frame_data *fd, int proto)
+{
+  frame_proto_data temp, *p1;
+  GSList *item;
+
+  temp.proto = proto;
+  temp.proto_data = NULL;
+
+  item = g_slist_find_custom(fd->pfd, (gpointer *)&temp, p_compare);
+
+  if (item) {
+    p1 = (frame_proto_data *)item->data;
+    return p1->proto_data;
+  }
+
+  return NULL;
+
+}
+
+void
+p_rem_proto_data(frame_data *fd, int proto)
+{
+  frame_proto_data temp;
+  GSList *item;
+
+  temp.proto = proto;
+  temp.proto_data = NULL;
+
+  item = g_slist_find_custom(fd->pfd, (gpointer *)&temp, p_compare);
+
+  if (item) {
+
+    fd->pfd = g_slist_remove(fd->pfd, item);
+
+  }
+
+}
+
+
+