Add COPS dissector (with a few fixes for compiling on Win32).

I put the header file info in packet-cops.c since no one else uses it.

Fix the version number and plugin directory in config.h.win32.

svn path=/trunk/; revision=2044

1 files changed, 335 insertions, 0 deletions

diff --git a/packet-cops.c b/packet-cops.c
new file mode 100644
index 0000000000..2a4c0811d8
--- /dev/null
+++ b/packet-cops.c
@@ -0,0 +1,335 @@
+/* packet-cops.c
+ * Routines for the COPS (Common Open Policy Service) protocol dissection
+ * RFC2748
+ *
+ * Copyright 2000, Heikki Vatiainen <hessu@cs.tut.fi>
+ *
+ * $Id: packet-cops.c,v 1.1 2000/06/07 22:57:45 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>
+#include <stdlib.h>
+
+#include <string.h>
+#include <glib.h>
+#include "packet.h"
+
+#define TCP_PORT_COPS 3288
+
+#define COPS_OBJECT_HDR_SIZE 4
+
+static const value_string cops_flags_vals[] = {
+        { 0x00,          "None" },
+        { 0x01,          "Solicited Message Flag Bit" },
+        { 0, NULL },
+};
+
+/* The different COPS message types */
+enum cops_op_code {
+        COPS_NO_MSG,          /* Not a COPS Message type     */ 
+
+        COPS_MSG_REQ,         /* Request (REQ)               */
+        COPS_MSG_DEC,         /* Decision (DEC)              */
+        COPS_MSG_RPT,         /* Report State (RPT)          */
+        COPS_MSG_DRQ,         /* Delete Request State (DRQ)  */
+        COPS_MSG_SSQ,         /* Synchronize State Req (SSQ) */
+        COPS_MSG_OPN,         /* Client-Open (OPN)           */
+        COPS_MSG_CAT,         /* Client-Accept (CAT)         */
+        COPS_MSG_CC,          /* Client-Close (CC)           */
+        COPS_MSG_KA,          /* Keep-Alive (KA)             */
+        COPS_MSG_SSC,         /* Synchronize Complete (SSC)  */
+
+        COPS_LAST_OP_CODE     /* For error checking          */
+};
+
+static const value_string cops_op_code_vals[] = {
+        { COPS_MSG_REQ,          "Request (REQ)" },
+        { COPS_MSG_DEC,          "Decision (DEC)" },
+        { COPS_MSG_RPT,          "Report State (RPT)" },
+        { COPS_MSG_DRQ,          "Delete Request State (DRQ)" },
+        { COPS_MSG_SSQ,          "Synchronize State Req (SSQ)" },
+        { COPS_MSG_OPN,          "Client-Open (OPN)" },
+        { COPS_MSG_CAT,          "Client-Accept (CAT)" },
+        { COPS_MSG_CC,           "Client-Close (CC)" },
+        { COPS_MSG_KA,           "Keep-Alive (KA)" },
+        { COPS_MSG_SSC,          "Synchronize Complete (SSC)" },
+        { 0, NULL },
+};
+
+
+/* The different objects in COPS messages */
+enum cops_c_num {
+        COPS_NO_OBJECT,        /* Not a COPS Object type               */
+
+        COPS_OBJ_HANDLE,       /* Handle Object (Handle)               */
+        COPS_OBJ_CONTEXT,      /* Context Object (Context)             */
+        COPS_OBJ_IN_INT,       /* In-Interface Object (IN-Int)         */
+        COPS_OBJ_OUT_INT,      /* Out-Interface Object (OUT-Int)       */
+        COPS_OBJ_REASON,       /* Reason Object (Reason)               */
+        COPS_OBJ_DECISION,     /* Decision Object (Decision)           */
+        COPS_OBJ_LPDPDECISION, /* LPDP Decision Object (LPDPDecision)  */
+        COPS_OBJ_ERROR,        /* Error Object (Error)                 */
+        COPS_OBJ_CLIENTSI,     /* Client Specific Information Object (ClientSI) */
+        COPS_OBJ_KATIMER,      /* Keep-Alive Timer Object (KATimer)    */
+        COPS_OBJ_PEPID,        /* PEP Identification Object (PEPID)    */
+        COPS_OBJ_REPORT_TYPE,  /* Report-Type Object (Report-Type)     */
+        COPS_OBJ_PDPREDIRADDR, /* PDP Redirect Address Object (PDPRedirAddr) */
+        COPS_OBJ_LASTPDPADDR,  /* Last PDP Address (LastPDPaddr)       */
+        COPS_OBJ_ACCTTIMER,    /* Accounting Timer Object (AcctTimer)  */
+        COPS_OBJ_INTEGRITY,    /* Message Integrity Object (Integrity) */
+
+        COPS_LAST_C_NUM        /* For error checking                   */
+};
+
+static const value_string cops_c_num_vals[] = {
+        { COPS_OBJ_HANDLE,       " Handle Object (Handle)" },
+        { COPS_OBJ_CONTEXT,      " Context Object (Context)" },
+        { COPS_OBJ_IN_INT,       " In-Interface Object (IN-Int)" },
+        { COPS_OBJ_OUT_INT,      " Out-Interface Object (OUT-Int)" },
+        { COPS_OBJ_REASON,       " Reason Object (Reason)" },
+        { COPS_OBJ_DECISION,     " Decision Object (Decision)" },
+        { COPS_OBJ_LPDPDECISION, " LPDP Decision Object (LPDPDecision)" },
+        { COPS_OBJ_ERROR,        " Error Object (Error)" },
+        { COPS_OBJ_CLIENTSI,     " Client Specific Information Object (ClientSI)" },
+        { COPS_OBJ_KATIMER,      " Keep-Alive Timer Object (KATimer)" },
+        { COPS_OBJ_PEPID,        " PEP Identification Object (PEPID)" },
+        { COPS_OBJ_REPORT_TYPE,  " Report-Type Object (Report-Type)" },
+        { COPS_OBJ_PDPREDIRADDR, " PDP Redirect Address Object (PDPRedirAddr)" },
+        { COPS_OBJ_LASTPDPADDR,  " Last PDP Address (LastPDPaddr)" },
+        { COPS_OBJ_ACCTTIMER,    " Accounting Timer Object (AcctTimer)" },
+        { COPS_OBJ_INTEGRITY,    " Message Integrity Object (Integrity)" },
+        { 0, NULL },
+
+};
+
+/* Initialize the protocol and registered fields */
+static gint proto_cops = -1;
+static gint hf_cops_ver_flags = -1;
+static gint hf_cops_version = -1;
+static gint hf_cops_flags = -1;
+
+static gint hf_cops_op_code = -1;
+static gint hf_cops_client_type = -1;
+static gint hf_cops_msg_len = -1;
+
+static gint hf_cops_obj_len = -1;
+static gint hf_cops_obj_c_num = -1;
+static gint hf_cops_obj_c_type = -1;
+
+/* Initialize the subtree pointers */
+static gint ett_cops = -1;
+static gint ett_cops_ver_flags = -1;
+static gint ett_cops_obj = -1;
+
+static int dissect_cops_object(tvbuff_t *tvb, guint32 offset, proto_tree *tree);
+
+/* Code to actually dissect the packets */
+#if 0
+static void dissect_cops(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+        guint8 op_code;
+#else
+static void dissect_cops(const u_char *pd, int o, frame_data *fd, proto_tree *tree)
+{
+        tvbuff_t *tvb;
+        packet_info *pinfo = &pi;
+        guint8 op_code;
+        tvb = tvb_new_subset(pinfo->compat_top_tvb, o, -1, -1);
+#endif
+
+        pinfo->current_proto = "COPS";
+        if (check_col(pinfo->fd, COL_PROTOCOL)) 
+                col_add_str(pinfo->fd, COL_PROTOCOL, "COPS");
+    
+        op_code = tvb_get_guint8(tvb, 1);
+        if (check_col(pinfo->fd, COL_INFO))
+                col_add_fstr(pinfo->fd, COL_INFO, "COPS %s",
+                             val_to_str(op_code, cops_op_code_vals, "Unknown Op Code"));
+
+        if (tree) {
+                proto_item *ti, *tv;
+                proto_tree *cops_tree, *ver_flags_tree;
+                guint32 offset, msg_len, carbage;
+                guint8 ver_flags;
+
+
+                offset = 0;
+                ti = proto_tree_add_item(tree, proto_cops, tvb, offset, tvb_length(tvb), FALSE);
+                cops_tree = proto_item_add_subtree(ti, ett_cops);
+
+                /* Version and flags share the same byte, put them in a subtree */
+                ver_flags = tvb_get_guint8(tvb, offset);
+                tv = proto_tree_add_uint_format(cops_tree, hf_cops_ver_flags, tvb, offset, 1,
+                                                  ver_flags, "Version: %u, Flags: %s",
+                                                  hi_nibble(ver_flags),
+                                                  val_to_str(lo_nibble(ver_flags), cops_flags_vals, "Unknown"));
+                ver_flags_tree = proto_item_add_subtree(tv, ett_cops_ver_flags);
+                proto_tree_add_uint(ver_flags_tree, hf_cops_version, tvb, offset, 1, ver_flags);
+                proto_tree_add_uint(ver_flags_tree, hf_cops_flags, tvb, offset, 1, ver_flags);
+                offset++;
+
+                proto_tree_add_uint(cops_tree, hf_cops_op_code, tvb, offset, 1, tvb_get_guint8(tvb, offset));
+                offset ++;
+                proto_tree_add_uint(cops_tree, hf_cops_client_type, tvb, offset, 2, tvb_get_ntohs(tvb, offset));
+                offset += 2;
+
+                msg_len = tvb_get_ntohl(tvb, offset);
+                proto_tree_add_uint(cops_tree, hf_cops_msg_len, tvb, offset, 4, tvb_get_ntohl(tvb, offset));
+                offset += 4;
+
+                while (msg_len >= COPS_OBJECT_HDR_SIZE) {
+                        int consumed;
+
+                        consumed = dissect_cops_object(tvb, offset, cops_tree);
+                        if (consumed == 0)
+                                break;
+                        msg_len -= consumed;
+                        offset += consumed;
+                }
+
+                carbage = tvb_length_remaining(tvb, offset);
+                if (carbage != 0)
+                        proto_tree_add_text(cops_tree, tvb, offset, carbage,
+                                            "Trailing carbage: %u byte%s", carbage,
+                                            plurality(carbage, "", "s"));
+        }
+
+        return;
+}
+
+static int dissect_cops_object(tvbuff_t *tvb, guint32 offset, proto_tree *tree)
+{
+        guint16 object_len, contents_len;
+        guint8 c_num, c_type;
+        proto_item *ti;
+        proto_tree *obj_tree;
+
+        if (tvb_length_remaining(tvb, offset) < COPS_OBJECT_HDR_SIZE)
+                return 0;
+
+        object_len = tvb_get_ntohs(tvb, offset);
+        c_num = tvb_get_guint8(tvb, offset + 2);
+        c_type = tvb_get_guint8(tvb, offset + 3);
+
+        ti = proto_tree_add_uint_format(tree, hf_cops_obj_c_num, tvb, offset, object_len, c_num,
+                                          "Object Type: %s", val_to_str(c_num, cops_c_num_vals, "Unknown"));
+        obj_tree = proto_item_add_subtree(ti, ett_cops_obj);
+
+        proto_tree_add_uint(obj_tree, hf_cops_obj_len, tvb, offset, 2, tvb_get_ntohs(tvb, offset));
+        offset += 2;
+
+        proto_tree_add_uint(obj_tree, hf_cops_obj_c_num, tvb, offset, 1, tvb_get_guint8(tvb, offset));
+        offset++;
+
+        proto_tree_add_uint(obj_tree, hf_cops_obj_c_type, tvb, offset, 1, tvb_get_guint8(tvb, offset));
+        offset++;
+
+        contents_len = object_len - COPS_OBJECT_HDR_SIZE;
+        proto_tree_add_text(obj_tree, tvb, offset, contents_len,
+                            "Object contents: %u bytes", contents_len);
+
+        /* Pad to 32bit boundary */
+        if (object_len % sizeof (guint32))
+                object_len += (sizeof (guint32) - object_len % sizeof (guint32));
+
+        return object_len;
+        
+}
+
+/* Register the protocol with Ethereal */
+void proto_register_cops(void)
+{                 
+
+        /* Setup list of header fields */
+        static hf_register_info hf[] = {
+                { &hf_cops_ver_flags,
+                        { "Version and Flags",           "cops.ver_flags",
+                        FT_UINT8, BASE_HEX, NULL, 0x0,
+                        "Version and Flags in COPS Common Header" }
+                },
+                { &hf_cops_version,
+                        { "Version",           "cops.version",
+                        FT_UINT8, BASE_DEC, NULL, 0xF0,
+                        "Version in COPS Common Header" }
+                },
+                { &hf_cops_flags,
+                        { "Flags",           "cops.flags",
+                        FT_UINT8, BASE_HEX, VALS(cops_flags_vals), 0x0F,
+                        "Flags in COPS Common Header" }
+                },
+                { &hf_cops_op_code,
+                        { "Op Code",           "cops.op_code",
+                        FT_UINT8, BASE_DEC, VALS(cops_op_code_vals), 0x0,
+                        "Op Code in COPS Common Header" }
+                },
+                { &hf_cops_client_type,
+                        { "Client Type",           "cops.client_type",
+                        FT_UINT16, BASE_DEC, NULL, 0x0,
+                        "Client Type in COPS Common Header" }
+                },
+                { &hf_cops_msg_len,
+                        { "Message Length",           "cops.msg_len",
+                        FT_UINT32, BASE_DEC, NULL, 0x0,
+                        "Message Length in COPS Common Header" }
+                },
+                { &hf_cops_obj_len,
+                        { "Object Length",           "cops.obj.len",
+                        FT_UINT32, BASE_DEC, NULL, 0x0,
+                        "Object Length in COPS Object Header" }
+                },
+                { &hf_cops_obj_c_num,
+                        { "C-Num",           "cops.obj.c_num",
+                        FT_UINT8, BASE_DEC, VALS(cops_c_num_vals), 0x0,
+                        "C-Num in COPS Object Header" }
+                },
+                { &hf_cops_obj_c_type,
+                        { "C-Type",           "cops.obj.c_type",
+                        FT_UINT8, BASE_DEC, NULL, 0x0,
+                        "C-Type in COPS Object Header" }
+                },
+        };
+
+        /* Setup protocol subtree array */
+        static gint *ett[] = {
+                &ett_cops,
+                &ett_cops_ver_flags,
+                &ett_cops_obj,
+        };
+
+        /* Register the protocol name and description */
+        proto_cops = proto_register_protocol("Common Open Policy Service", "cops");
+
+        /* Required function calls to register the header fields and subtrees used */
+        proto_register_field_array(proto_cops, hf, array_length(hf));
+        proto_register_subtree_array(ett, array_length(ett));
+};
+
+void
+proto_reg_handoff_cops(void)
+{
+        dissector_add("tcp.port", TCP_PORT_COPS, dissect_cops);
+}
+