Two more files for ipv6.

svn path=/trunk/; revision=231

1 files changed, 141 insertions, 0 deletions

diff --git a/packet-ipsec.c b/packet-ipsec.c
new file mode 100644
index 0000000000..5d74f133ad
--- /dev/null
+++ b/packet-ipsec.c
@@ -0,0 +1,141 @@
+/* packet-ipsec.c
+ * Routines for IPsec packet disassembly 
+ *
+ * $Id: packet-ipsec.c,v 1.1 1999/03/29 02:21:34 gram 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
+
+#include <stdio.h>
+
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+
+#include <glib.h>
+#include "packet.h"
+#include "resolv.h"
+
+struct newah {
+	guint8	ah_nxt;		/* Next Header */
+	guint8	ah_len;		/* Length of data + 1, in 32bit */
+	guint16	ah_reserve;	/* Reserved for future use */
+	guint32	ah_spi;		/* Security parameter index */
+	guint32	ah_seq;		/* Sequence number field */
+	/* variable size, 32bit bound*/	/* Authentication data */
+};
+
+struct newesp {
+	guint32	esp_spi;	/* ESP */
+	guint32	esp_seq;	/* Sequence number */
+	/*variable size*/		/* (IV and) Payload data */
+	/*variable size*/		/* padding */
+	/*8bit*/			/* pad size */
+	/*8bit*/			/* next header */
+	/*8bit*/			/* next header */
+	/*variable size, 32bit bound*/	/* Authentication data */
+};
+
+#ifndef offsetof
+#define	offsetof(type, member)	((size_t)(&((type *)0)->member))
+#endif
+
+int
+dissect_ah(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
+{
+    proto_tree *ah_tree;
+	proto_item *ti;
+    struct newah ah;
+    int advance;
+
+    memcpy(&ah, (void *) &pd[offset], sizeof(ah)); 
+    advance = sizeof(ah) + ((ah.ah_len - 1) << 2);
+
+    if (check_col(fd, COL_PROTOCOL))
+	col_add_str(fd, COL_PROTOCOL, "AH");
+    if (check_col(fd, COL_INFO)) {
+	col_add_fstr(fd, COL_INFO, "AH (SPI=%08x)",
+	    (guint32)ntohl(ah.ah_spi));
+    }
+
+    if (tree) {
+	/* !!! specify length */
+	ti = proto_tree_add_item(tree, offset, advance, "Authentication Header");
+	ah_tree = proto_tree_new();
+	proto_item_add_subtree(ti, ah_tree, ETT_AH);
+
+	proto_tree_add_item(ah_tree, offset + offsetof(struct newah, ah_nxt), 1,
+	    "Next Header: %d", ah.ah_nxt);
+	proto_tree_add_item(ah_tree, offset + offsetof(struct newah, ah_len), 1,
+	    "Length: %d", ah.ah_len << 2);
+	proto_tree_add_item(ah_tree, offset + offsetof(struct newah, ah_spi), 4,
+	    "SPI: %08x", (guint32)ntohl(ah.ah_spi));
+	proto_tree_add_item(ah_tree, offset + offsetof(struct newah, ah_seq), 4,
+	    "Sequence?: %08x", (guint32)ntohl(ah.ah_seq));
+	proto_tree_add_item(ah_tree, offset + sizeof(ah), (ah.ah_len - 1) << 2,
+	    "ICV");
+    }
+
+    /* start of the new header (could be a extension header) */
+    return advance;
+}
+
+void
+dissect_esp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
+{
+	proto_tree *esp_tree;
+    proto_item *ti;
+    struct newesp esp;
+
+    memcpy(&esp, (void *) &pd[offset], sizeof(esp)); 
+
+    /*
+     * load the top pane info. This should be overwritten by
+     * the next protocol in the stack
+     */
+    if (check_col(fd, COL_PROTOCOL))
+	col_add_str(fd, COL_PROTOCOL, "ESP");
+    if (check_col(fd, COL_INFO)) {
+	col_add_fstr(fd, COL_INFO, "ESP (SPI=%08x)",
+	    (guint32)ntohl(esp.esp_spi));
+    }
+
+    /*
+     * populate a tree in the second pane with the status of the link layer
+     * (ie none)
+     */
+    if(tree) {
+	ti = proto_tree_add_item(tree, 0, 0, "Encapsulated Security Payload");
+	esp_tree = proto_tree_new();
+	proto_item_add_subtree(ti, esp_tree, ETT_ESP);
+	proto_tree_add_item(esp_tree, offset + offsetof(struct newesp, esp_spi), 4,
+	    "SPI: %08x", (guint32)ntohl(esp.esp_spi));
+	proto_tree_add_item(esp_tree, offset + offsetof(struct newesp, esp_seq), 4,
+	    "Sequence?: %08x", (guint32)ntohl(esp.esp_seq));
+    }
+}