--- /dev/null
+/* packet-icp.c
+ * Routines for ICP (internet cache protocol) packet disassembly RFC 2186 && RFC 2187
+ *
+ *
+ * $Id: packet-icp.c,v 1.1 1999/09/14 08:06:24 guy Exp $
+ *
+ * Ethereal - Network traffic analyzer
+ * By Peter Torvals
+ * Copyright 1999 Peter Torvals
+
+ * 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.
+ */
+
+int proto_icp=-1;
+int hf_icp_length=-1;
+int hf_icp_opcode=-1;
+int hf_icp_version=-1;
+int hf_icp_request_nr=-1;
+
+
+#define MAX_TEXTBUF_LENGTH 600
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <glib.h>
+#include "packet.h"
+#include "resolv.h"
+
+#define CODE_ICP_OP_QUERY 1
+#define CODE_ICP_OP_INVALID 0
+#define CODE_ICP_OP_HIT 2
+#define CODE_ICP_OP_MISS 3
+#define CODE_ICP_OP_ERR 4
+#define CODE_ICP_OP_SEND 5
+#define CODE_ICP_OP_SENDA 6
+#define CODE_ICP_OP_DATABEG 7
+#define CODE_ICP_OP_DATA 8
+#define CODE_ICP_OP_DATAEND 9
+#define CODE_ICP_OP_SECHO 10
+#define CODE_ICP_OP_DECHO 11
+#define CODE_ICP_OP_MISS_NOFETCH 21
+#define CODE_ICP_OP_DENIED 22
+#define CODE_ICP_OP_HIT_OBJ 23
+
+static value_string opcode_vals[] = {
+{ CODE_ICP_OP_INVALID , "ICP_INVALID" },
+{ CODE_ICP_OP_QUERY , "ICP_QUERY" },
+{ CODE_ICP_OP_HIT , "ICP_HIT" },
+{ CODE_ICP_OP_MISS , "ICP_MISS" },
+{ CODE_ICP_OP_ERR , "ICP_ERR" },
+{ CODE_ICP_OP_SEND, "ICP_SEND" },
+{ CODE_ICP_OP_SENDA, "ICP_SENDA"},
+{ CODE_ICP_OP_DATABEG, "ICP_DATABEG"},
+{ CODE_ICP_OP_DATA, "ICP_DATA"},
+{ CODE_ICP_OP_DATAEND, "ICP_DATA_END"},
+{ CODE_ICP_OP_SECHO , "ICP_SECHO"},
+{ CODE_ICP_OP_DECHO , "ICP_DECHO"},
+{ CODE_ICP_OP_MISS_NOFETCH , "ICP_MISS_NOFETCH"},
+{ CODE_ICP_OP_DENIED , "ICP_DENIED"},
+{ CODE_ICP_OP_HIT_OBJ , "ICP_HIT_OBJ"},
+{ 0, NULL}
+};
+
+
+
+typedef struct _e_icphdr
+{
+ guint8 opcode;
+ guint8 version;
+ guint16 message_length;
+ guint32 request_number;
+ guint32 options;
+ guint32 option_data;
+ gchar sender_address[4];
+} e_icphdr;
+
+static gchar textbuf[MAX_TEXTBUF_LENGTH];
+void dissect_icp_payload( const u_char *pd, int offset,
+ frame_data *fd,proto_tree *pload_tree, e_icphdr *icph)
+{
+/* To Be Done take care of fragmentation*/
+guint32 maxlength=fd->pkt_len-offset;
+guint32 i;
+guint16 objectlength;
+ switch(icph->opcode)
+ {
+ case CODE_ICP_OP_QUERY:
+ /* 4 byte requester host address */
+ proto_tree_add_text(pload_tree,offset,4,
+ "Requester Host Address %u.%u.%u.%u",
+ (guint8)pd[offset],
+ (guint8)pd[offset+1],
+ (guint8)pd[offset+2],
+ (guint8)pd[offset+3]);
+
+ /* null terminated URL */
+ for (i=0; i < maxlength &&
+ pd[offset+4+i] != 0 && i<(MAX_TEXTBUF_LENGTH-1);i++)
+ {
+ textbuf[i]=pd[offset+4+i];
+ }
+ textbuf[i]=0;
+ i++;
+ proto_tree_add_text(pload_tree, offset+4,i,
+ "URL: %s", textbuf);
+ break;
+ case CODE_ICP_OP_HIT_OBJ:
+ /* null terminated url */
+ for (i=0; i < maxlength &&
+ pd[offset+i] != 0 && i<(MAX_TEXTBUF_LENGTH-1);i++)
+ {
+ textbuf[i]=pd[offset+i];
+ }
+ textbuf[i]=0;
+ i++;
+ proto_tree_add_text(pload_tree, offset,i,
+ "URL: %s", textbuf);
+ /* 2 byte object size */
+ /* object data not recommended by standard*/
+ objectlength=pntohs(&pd[offset]);
+ proto_tree_add_text(pload_tree,offset,2,"object length: %u", objectlength);
+ /* object data not recommended by standard*/
+ proto_tree_add_text(pload_tree,offset+2, maxlength-2,"object data");
+ if (objectlength > maxlength-2)
+ {
+ proto_tree_add_text(pload_tree,offset,0,
+ "Packet is fragmented, rest of object is in next udp packet");
+ }
+ case CODE_ICP_OP_MISS:
+ case CODE_ICP_OP_HIT:
+ for (i=0; i < maxlength &&
+ pd[offset+i] != 0 && i<(MAX_TEXTBUF_LENGTH-1);i++)
+ {
+ textbuf[i]=pd[offset+i];
+ }
+ textbuf[i]=0;
+ i++;
+ proto_tree_add_text(pload_tree, offset,i,
+ "URL: %s", textbuf);
+ default:
+ /* check for fragmentation and add message if next part
+ of payload in next fragment*/
+ break;
+ }
+}
+
+void dissect_icp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
+{
+ proto_tree *icp_tree , *payload_tree;
+ proto_item *ti , *payloadtf;
+ e_icphdr icph;
+
+ gchar *opcodestrval;
+
+/* TBD: check if this is a fragment or first part of udp packet */
+ icph.opcode=pd[offset];
+ icph.version=pd[offset+1];
+ icph.message_length=pntohs(&(pd[offset+2]));
+ icph.request_number=pntohl(&(pd[offset+4]));
+ memcpy(&icph.options,&pd[offset+8],sizeof(guint32));
+ memcpy(&icph.option_data,&pd[offset+12],sizeof(guint32));
+ memcpy(icph.sender_address,&pd[offset+16],4);
+
+
+ opcodestrval = match_strval(icph.opcode,opcode_vals);
+
+ if (opcodestrval == NULL ) opcodestrval= "UNKNOWN OPCODE";
+
+ sprintf(textbuf,"opc: %s(%u), Req Nr: %u", opcodestrval,
+ (guint16)icph.opcode,icph.request_number);
+
+ if (check_col(fd, COL_PROTOCOL))
+ col_add_str(fd, COL_PROTOCOL, "ICP");
+
+ if (check_col(fd, COL_INFO))
+ {
+ col_add_fstr(fd,COL_INFO,textbuf);
+ }
+
+ if (tree)
+ {
+
+ ti = proto_tree_add_item(tree,proto_icp ,offset,fd->pkt_len-offset,
+ NULL);
+
+ icp_tree = proto_item_add_subtree(ti, ETT_ICP);
+ proto_tree_add_item_format(icp_tree,hf_icp_opcode, offset, 1,
+ icph.opcode, "Opcode:0x%01x (%s)",icph.opcode, opcodestrval);
+
+ proto_tree_add_item_format(icp_tree,hf_icp_version, offset+1, 1,
+ icph.version,"Version: 0x%01x (%d)", icph.version, (int)icph.version);
+
+ proto_tree_add_item_format(icp_tree,hf_icp_length, offset+2, 2,
+ icph.message_length,
+ "Length: 0x%02x (%d)", icph.message_length,(int)icph.message_length);
+ proto_tree_add_item_format(icp_tree,hf_icp_request_nr, offset+4, 4,
+ icph.request_number,
+ "Request Number: 0x%04x (%u)", icph.request_number,icph.request_number);
+
+ if ( (icph.opcode == CODE_ICP_OP_QUERY) && ((icph.options & 0x80000000 ) != 0) )
+ {
+ proto_tree_add_text(icp_tree,offset+8,4,
+ "option: ICP_FLAG_HIT_OBJ");
+ }
+ if ( (icph.opcode == CODE_ICP_OP_QUERY)&& ((icph.options & 0x40000000 ) != 0) )
+ {
+ proto_tree_add_text(icp_tree,offset+8,4,
+ "option:ICP_FLAG_SRC_RTT");
+ }
+ if ((icph.opcode != CODE_ICP_OP_QUERY)&& ((icph.options & 0x40000000 ) != 0))
+ {
+ proto_tree_add_text(icp_tree,offset+8,8,
+ "option: ICP_FLAG_SCR_RTT RTT=%u", icph.option_data & 0x0000ffff);
+ }
+
+ proto_tree_add_text(icp_tree,offset+16, 4,
+ "Sender Host IP address %u.%u.%u.%u",
+ (guint8)icph.sender_address[0],
+ (guint8)icph.sender_address[1],
+ (guint8)icph.sender_address[2],
+ (guint8)icph.sender_address[3]);
+
+ payloadtf = proto_tree_add_text(icp_tree,
+ offset+20,icph.message_length - 20,
+ "Payload");
+ payload_tree = proto_item_add_subtree(payloadtf, ETT_ICP_PAYLOAD);
+
+ if (payload_tree !=NULL)
+ {
+ dissect_icp_payload( pd,
+ 20+offset,fd,payload_tree,&icph);
+ }
+ }
+}
+void
+proto_register_icp(void)
+{
+ static hf_register_info hf[] = {
+ { &hf_icp_opcode,
+ { "Opcode","icp.opcode", FT_UINT8, NULL }},
+ { &hf_icp_version,
+ { "Version", "icp.version", FT_UINT8, NULL }},
+ { &hf_icp_length,
+ { "Length","icp.length", FT_UINT16, NULL }},
+ { &hf_icp_request_nr,
+ { "Request Number","icp.nr", FT_UINT32, NULL }} };
+
+ proto_icp = proto_register_protocol ("Internet Cache protocol", "icp");
+ proto_register_field_array(proto_icp, hf, array_length(hf));
+}
git.samba.org / obnox / wireshark / wip.git / commitdiff