Ethereal-dev: [Ethereal-dev] patch: DAAP dissector [2nd try]
Note: This archive is from the project's previous web site, ethereal.com. This list is no longer active.
From: "Kelly Byrd" <kbyrd-ethereal@xxxxxxxxxx>
Date: Sat, 21 Aug 2004 08:51:32 -0700 (PDT)
> Kelly Byrd wrote: > >> Attached is a patch for packet-daap.c, it's addition to Makefile.common, >> and some logic in packet-http.c > > Unfortunately, it doesn't work: Sorry about that, cut and pasting into wordpad isn't the best way. See if this works. KB
Index: epan/dissectors/Makefile.common =================================================================== --- epan/dissectors/Makefile.common (revision 11783) +++ epan/dissectors/Makefile.common (working copy) @@ -106,6 +106,7 @@ packet-cpfi.c \ packet-cpha.c \ packet-cups.c \ + packet-daap.c \ packet-data.c \ packet-dccp.c \ packet-dcerpc-afs4int.c \ Index: epan/dissectors/packet-http.c =================================================================== --- epan/dissectors/packet-http.c (revision 11783) +++ epan/dissectors/packet-http.c (working copy) @@ -117,6 +117,7 @@ #define TCP_PORT_PROXY_ADMIN_HTTP 3132 #define TCP_ALT_PORT_HTTP 8080 #define TCP_PORT_HKP 11371 +#define TCP_PORT_DAAP 3689 /* * SSDP is implemented atop HTTP (yes, it really *does* run over UDP). */ @@ -128,7 +129,8 @@ */ typedef enum { PROTO_HTTP, /* just HTTP */ - PROTO_SSDP /* Simple Service Discovery Protocol */ + PROTO_SSDP, /* Simple Service Discovery Protocol */ + PROTO_DAAP /* Digital Audio Access Protocol */ } http_proto_t; typedef void (*RequestDissector)(tvbuff_t*, proto_tree*, int); @@ -295,6 +297,11 @@ proto_tag = "SSDP"; break; + case TCP_PORT_DAAP: + proto = PROTO_DAAP; + proto_tag = "DAAP"; + break; + default: proto = PROTO_HTTP; proto_tag = "HTTP"; Index: epan/dissectors/packet-daap.c =================================================================== --- epan/dissectors/packet-daap.c (revision 0) +++ epan/dissectors/packet-daap.c (revision 0) @@ -0,0 +1,412 @@ +/* packet-daap.c + * Routines for Digital Audio Access Protocol dissection + * Copyright 2004, Kelly Byrd <kbyrd@xxxxxxxxxx> + * + * $Id: README.developer 11475 2004-07-23 01:37:35Z guy $ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@xxxxxxxxxxxx> + * 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 <epan/packet.h> +#include <epan/dissectors/packet-http.h> + +#define TCP_PORT_DAAP 3689 + +/* DAAP tags */ +/* Container tags */ +#define daap_mcon 0x6d636f6e +#define daap_msrv 0x6d737276 +#define daap_mccr 0x6d636372 +#define daap_mdcl 0x6d64636c +#define daap_mlog 0x6d6c6f67 +#define daap_mupd 0x6d757064 +#define daap_avdb 0x61766462 +#define daap_mlcl 0x6d6c636c +#define daap_mlit 0x6d6c6974 +#define daap_mbcl 0x6d62636c +#define daap_adbs 0x61646273 +#define daap_aply 0x61706c79 +#define daap_apso 0x6170736f +#define daap_mudl 0x6d75646c +#define daap_abro 0x6162726f +#define daap_abal 0x6162616c +#define daap_abcp 0x61626370 +#define daap_abgn 0x6162676e +#define daap_prsv 0x70727376 +#define daap_arif 0x61726966 +/* String tags */ +#define daap_minm 0x6d696e6d +#define daap_msts 0x6d737473 +#define daap_mcnm 0x6d636e6d +#define daap_mcna 0x6d636e61 +#define daap_asal 0x6173616c +#define daap_asar 0x61736172 +#define daap_ascm 0x6173636d +#define daap_asfm 0x6173666d +#define daap_aseq 0x61736571 +#define daap_asgn 0x6173676e +#define daap_asdt 0x61736474 +#define daap_asul 0x6173756c +/* uint64 tags */ +#define daap_mper 0x6d706572 +/* uint32 tags */ +#define daap_mstt 0x6d737474 +#define daap_musr 0x6d757372 +#define daap_miid 0x6d696964 +#define daap_mcti 0x6d637469 +#define daap_mpco 0x6d70636f +#define daap_mimc 0x6d696d63 +#define daap_mrco 0x6d72636f +#define daap_mtco 0x6d74636f +#define daap_mstm 0x6d73746d +#define daap_msdc 0x6d736463 +#define daap_mlid 0x6d6c6964 +#define daap_msur 0x6d737572 +#define daap_asda 0x61736461 +#define daap_asdm 0x6173646d +#define daap_assr 0x61737372 +#define daap_assz 0x6173737a +#define daap_asst 0x61737374 +#define daap_assp 0x61737370 +#define daap_astm 0x6173746d +#define daap_aeNV 0x61654e56 +/* uint16 tags */ +#define daap_mcty 0x6d637479 +#define daap_asbt 0x61736274 +#define daap_asbr 0x61736272 +#define daap_asdc 0x61736463 +#define daap_asdn 0x6173646e +#define daap_astc 0x61737463 +#define daap_astn 0x6173746e +#define daap_asyr 0x61737972 +/* byte tags */ +#define daap_mikd 0x6d696b64 +#define daap_msau 0x6d736175 +#define daap_msty 0x6d737479 +#define daap_asrv 0x61737276 +#define daap_asur 0x61737572 +#define daap_asdk 0x6173646b +/* boolean tags */ +#define daap_mslr 0x6d736c72 +#define daap_msal 0x6d73616c +#define daap_msup 0x6d737570 +#define daap_mspi 0x6d737069 +#define daap_msex 0x6d736578 +#define daap_msbr 0x6d736272 +#define daap_msqy 0x6d737179 +#define daap_msix 0x6d736978 +#define daap_msrs 0x6d737273 +#define daap_asco 0x6173636f +#define daap_asdb 0x61736462 +#define daap_abpl 0x6162706c +#define daap_aeSP 0x61655350 +/* version (32-bit)*/ +#define daap_mpro 0x6d70726f +#define daap_apro 0x6170726f + + +/* Initialize the protocol and registered fields */ +static int proto_daap = -1; +static int hf_daap_name = -1; +static int hf_daap_size = -1; + +/* Initialize the subtree pointers */ +static gint ett_daap = -1; +static gint ett_daap_sub = -1; + +/* Forward declarations */ +static int dissect_daap_one_tag(proto_tree *tree, tvbuff_t *tvb, int offset, int length); + +static void +dissect_daap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + + proto_item *ti; + proto_tree *daap_tree; + int offset = 0; + gboolean is_request = (pinfo->destport == TCP_PORT_DAAP); + + + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "DAAP"); + + + if (check_col(pinfo->cinfo, COL_INFO)) { + if (is_request) { + col_add_str(pinfo->cinfo, COL_INFO, "DAAP Request"); + } else { + /* This is done in two functions on purpose. If the tvb_get_xxx() + * functions fail, at least something will be in the info column + */ + col_add_str(pinfo->cinfo, COL_INFO, "DAAP Response"); + col_append_fstr(pinfo->cinfo, COL_INFO, " [tag: %s, size: %d]", + tvb_get_string(tvb, offset, 4), + tvb_get_ntohl(tvb, offset+4)); + } + } + + + + if (tree) { + ti = proto_tree_add_item(tree, proto_daap, tvb, 0, -1, FALSE); + daap_tree = proto_item_add_subtree(ti, ett_daap); + dissect_daap_one_tag(daap_tree, tvb, offset, 0); + } +} + +static int +dissect_daap_one_tag(proto_tree *tree, tvbuff_t *tvb, int offset, int length) +{ + unsigned int tagname; + int tagsize; + int new_offset; + proto_item *ti = NULL; + proto_item *ti2 = NULL; + proto_tree *new_tree = NULL; + guint64 persistent_id; + + do { + if (!tvb_offset_exists(tvb, offset)) + break; + + tagname = tvb_get_ntohl(tvb, offset); + tagsize = tvb_get_ntohl(tvb, offset+4); + ti = proto_tree_add_text(tree, tvb, offset, tagsize+8, + "Tag: %c%c%c%c, Size: %d", + tvb_get_guint8(tvb, offset), + tvb_get_guint8(tvb, offset+1), + tvb_get_guint8(tvb, offset+2), + tvb_get_guint8(tvb, offset+3), + tagsize); + + ti2 = proto_tree_add_item(tree, hf_daap_name, tvb, offset, 4, FALSE); + PROTO_ITEM_SET_HIDDEN(ti2); + ti2 = proto_tree_add_item(tree, hf_daap_size, tvb, offset+4, 4, FALSE); + PROTO_ITEM_SET_HIDDEN(ti2); + offset += 8; + length -= 8; + + switch (tagname) { + case daap_mcon: + case daap_msrv: + case daap_mccr: + case daap_mdcl: + case daap_mlog: + case daap_mupd: + case daap_avdb: + case daap_mlcl: + case daap_mlit: + case daap_mbcl: + case daap_adbs: + case daap_aply: + case daap_apso: + case daap_mudl: + case daap_abro: + case daap_abal: + case daap_abcp: + case daap_abgn: + case daap_prsv: + case daap_arif: + /* Container tags */ + new_tree = proto_item_add_subtree(ti, ett_daap_sub); + new_offset = dissect_daap_one_tag(new_tree, tvb, offset, + tagsize); + break; + case daap_minm: + case daap_msts: + case daap_mcnm: + case daap_mcna: + case daap_asal: + case daap_asar: + case daap_ascm: + case daap_asfm: + case daap_aseq: + case daap_asgn: + case daap_asdt: + case daap_asul: + /* Tags contain strings */ + proto_item_append_text(ti, ", Data: %s", + tvb_get_string(tvb, offset, tagsize)); + break; + case daap_mper: + /* Tags conain uint64 */ + persistent_id = tvb_get_ntohl(tvb, offset); + persistent_id <<= 32; + persistent_id = tvb_get_ntohl(tvb, offset+4); + proto_item_append_text(ti, ", Persistent Id: %" PRIu64, + persistent_id); + break; + case daap_mstt: + proto_item_append_text(ti, ", Status: %d", + tvb_get_ntohl(tvb, offset)); + break; + case daap_musr: + case daap_msur: + proto_item_append_text(ti, ", Revision: %d", + tvb_get_ntohl(tvb, offset)); + break; + case daap_miid: + case daap_mcti: + case daap_mpco: + case daap_mlid: + proto_item_append_text(ti, ", Id: %d", + tvb_get_ntohl(tvb, offset)); + break; + case daap_mrco: + case daap_mtco: + case daap_mimc: + case daap_msdc: + proto_item_append_text(ti, ", Count: %d", + tvb_get_ntohl(tvb, offset)); + break; + case daap_mstm: + proto_item_append_text(ti, ", Timeout: %d seconds", + tvb_get_ntohl(tvb, offset)); + break; + case daap_asda: + case daap_asdm: + case daap_assr: + case daap_assz: + case daap_asst: + case daap_assp: + case daap_astm: + case daap_aeNV: + /* Tags conain uint32 */ + proto_item_append_text(ti, ", Data: %d", + tvb_get_ntohl(tvb, offset)); + break; + + case daap_mcty: + case daap_asbt: + case daap_asbr: + case daap_asdc: + case daap_asdn: + case daap_astc: + case daap_astn: + case daap_asyr: + /* Tags conain uint16 */ + proto_item_append_text(ti, ", Data: %d", + tvb_get_ntohs(tvb, offset)); + break; + + case daap_mikd: + case daap_msau: + case daap_msty: + case daap_asrv: + case daap_asur: + case daap_asdk: + /* Tags conain uint8 */ + proto_item_append_text(ti, ", Data: %d", + tvb_get_guint8(tvb, offset)); + + break; + + case daap_mslr: + case daap_msal: + case daap_msup: + case daap_mspi: + case daap_msex: + case daap_msbr: + case daap_msqy: + case daap_msix: + case daap_msrs: + case daap_asco: + case daap_asdb: + case daap_abpl: + case daap_aeSP: + /* Tags ARE boolean. Data is (uint8), but it seems + * the value is always zero. So, if the tag is present + * the "bool" is true. + */ + proto_item_append_text(ti, ", Data: True"); + break; + + case daap_mpro: + case daap_apro: + /* Tags conain version (uint32) */ + proto_item_append_text(ti, ", Version: %d.%d.%d.%d", + tvb_get_guint8(tvb, offset), + tvb_get_guint8(tvb, offset+1), + tvb_get_guint8(tvb, offset+2), + tvb_get_guint8(tvb, offset+3)); + break; + + default: + break; + } + offset += tagsize; + length -= tagsize; + } while (length > 0); + return offset; + +} + + +/* Register the protocol with Ethereal */ +void +proto_register_daap(void) +{ + + static hf_register_info hf[] = { + { &hf_daap_name, + { "Name", "daap.name", FT_STRING, BASE_NONE, NULL, 0x0, + "Tag Name", HFILL} + }, + { &hf_daap_size, + { "Size", "daap.size", FT_UINT32, BASE_DEC, NULL, 0x0, + "Tag Size", HFILL } + } + }; + + static gint *ett[] = { + &ett_daap, + &ett_daap_sub, + }; + + proto_daap = proto_register_protocol("Digital Audio Access Protocol", + "DAAP", "daap"); + + proto_register_field_array(proto_daap, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); +} + + +/* If this dissector uses sub-dissector registration add a registration routine. + This format is required because a script is used to find these routines and + create the code that calls these routines. +*/ +void +proto_reg_handoff_daap(void) +{ + dissector_handle_t daap_handle; + + daap_handle = create_dissector_handle(dissect_daap, + proto_daap); + http_dissector_add(TCP_PORT_DAAP, daap_handle); +}
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