diff --git a/AUTHORS b/AUTHORS index 5b8547b8ff..a05e9de050 100644 --- a/AUTHORS +++ b/AUTHORS @@ -3192,6 +3192,10 @@ David Katz { Support for versioning in the WiMAX ASN CP dissector } +Toralf Foerster { + SAMETIME dissector +} + and by: Pavel Roskin diff --git a/epan/CMakeLists.txt b/epan/CMakeLists.txt index 746ec4eded..3bebf7b990 100644 --- a/epan/CMakeLists.txt +++ b/epan/CMakeLists.txt @@ -912,6 +912,7 @@ set(DISSECTOR_SRC dissectors/packet-rx.c dissectors/packet-s5066.c dissectors/packet-sadmind.c + dissectors/packet-sametime.c dissectors/packet-sap.c dissectors/packet-sasp.c dissectors/packet-sbus.c diff --git a/epan/dissectors/Makefile.common b/epan/dissectors/Makefile.common index 484ea640b6..8573a267a2 100644 --- a/epan/dissectors/Makefile.common +++ b/epan/dissectors/Makefile.common @@ -822,6 +822,7 @@ DISSECTOR_SRC = \ packet-rx.c \ packet-s5066.c \ packet-sadmind.c \ + packet-sametime.c \ packet-sap.c \ packet-sasp.c \ packet-sbus.c \ diff --git a/epan/dissectors/packet-sametime.c b/epan/dissectors/packet-sametime.c new file mode 100644 index 0000000000..1e8456801c --- /dev/null +++ b/epan/dissectors/packet-sametime.c @@ -0,0 +1,929 @@ +/* packet-sametime.c + * Routines for SAMETIME dissection + * Copyright 2010, Toralf Foerster + * + * $Id$ + * + * Wireshark - Network traffic analyzer + * By Gerald Combs + * Copyright 1998 Gerald Combs + * + * Copied from WHATEVER_FILE_YOU_USED (where "WHATEVER_FILE_YOU_USED" + * is a dissector file; if you just copied this from README.developer, + * don't bother with the "Copied from" - you don't even need to put + * in a "Copied from" if you copied an existing dissector, especially + * if the bulk of the code in the new dissector is your code) + * + * 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include +#include +#include +#include +#include + +#define DEFAULT_SAMETIME_PORT 1533 + +static int proto_sametime = -1; +static guint global_sametime_port = DEFAULT_SAMETIME_PORT; +static dissector_handle_t sametime_handle; + +/* Preference */ +static gboolean global_sametime_show_length = FALSE; +static gboolean global_sametime_reassemble_packets = TRUE; + +/*heart beat*/ +static int hf_sametime_heartbeat = -1; + +/*sametime message header*/ +static int hf_sametime_message_length = -1; +static int hf_sametime_message_type = -1; +static int hf_sametime_message_options = -1; +static int hf_sametime_message_options_attribute = -1; +static int hf_sametime_message_options_encrypted = -1; +static int hf_sametime_message_channel = -1; + +/*common types*/ +static int hf_sametime_field_length = -1; +static int hf_sametime_field_text = -1; +static int hf_sametime_code = -1; +static int hf_sametime_login_type = -1; +static int hf_sametime_time = -1; + +/*handshake*/ +static int hf_sametime_handshake_major = -1; +static int hf_sametime_handshake_minor = -1; +static int hf_sametime_handshake_srvrcalc_addr = -1; +static int hf_sametime_handshake_loclcalc_addr = -1; + +/*channel*/ +static int hf_sametime_channel_service = -1; +static int hf_sametime_channel_id = -1; +static int hf_sametime_channel_send_type = -1; +static int hf_sametime_channel_awareness = -1; + +/*user status*/ +static int hf_sametime_user_status = -1; + +/*location*/ +static int hf_sametime_location_country = -1; +static int hf_sametime_location_postalcode = -1; +static int hf_sametime_location_province = -1; +static int hf_sametime_location_city = -1; +static int hf_sametime_location_phone = -1; +static int hf_sametime_location_name = -1; +static int hf_sametime_location_timezone = -1; + +/*packet detail tree*/ +static gint ett_sametime = -1; +static gint ett_sametime_options = -1; + +/*statistics*/ +static int sametime_tap = -1; +static const guint8* st_str_packet = "Sametime Message Count"; +static const guint8* st_str_message_type = "Message Type"; +static const guint8* st_str_send_type = "Send Type"; +static const guint8* st_str_user_status = "User Status"; +static int st_node_packet = -1; +static int st_node_message_type = -1; +static int st_node_send_type = -1; +static int st_node_user_status = -1; + +typedef struct SametimeTap { + gint message_type; + gint send_type; + gint user_status; +} SametimeTap; + +#define SAMETIME_MESSAGETYPE_HEARTBEAT 0x80 +#define SAMETIME_MESSAGETYPE_HANDSHAKE 0x0000 + +#define SAMETIME_MESSAGETYPE_HANDSHAKE_ACK 0x8000 +#define SAMETIME_MESSAGETYPE_LOGIN 0x0001 +#define SAMETIME_MESSAGETYPE_LOGIN_ACK 0x8001 +#define SAMETIME_MESSAGETYPE_LOGIN_REDIRECT 0x0018 +#define SAMETIME_MESSAGETYPE_LOGIN_CONTINUE 0x0016 + +#define SAMETIME_MESSAGETYPE_CHANNEL_CREATE 0x0002 +#define SAMETIME_MESSAGETYPE_CHANNEL_DESTROY 0x0003 +#define SAMETIME_MESSAGETYPE_CHANNEL_SEND 0x0004 +#define SAMETIME_MESSAGETYPE_CHANNEL_ACCEPT 0x0006 + +#define SAMETIME_MESSAGETYPE_SET_USER_STATUS 0x0009 +#define SAMETIME_MESSAGETYPE_SET_PRIVACY_LIST 0x000b +#define SAMETIME_MESSAGETYPE_SENSE_SERVICE 0x0011 +#define SAMETIME_MESSAGETYPE_ADMIN 0x0019 +#define SAMETIME_MESSAGETYPE_ANNOUNCE 0x0022 + +static const value_string messagetypenames[] = { + { SAMETIME_MESSAGETYPE_HEARTBEAT, "HEARTBEAT" }, + + { SAMETIME_MESSAGETYPE_HANDSHAKE, "HANDSHAKE" }, + { SAMETIME_MESSAGETYPE_HANDSHAKE_ACK, "HANDSHAKE_ACK" }, + { SAMETIME_MESSAGETYPE_LOGIN, "LOGIN" }, + { SAMETIME_MESSAGETYPE_LOGIN_ACK, "LOGIN_ACK" }, + { SAMETIME_MESSAGETYPE_LOGIN_REDIRECT, "LOGIN_REDIRECT" }, + { SAMETIME_MESSAGETYPE_LOGIN_CONTINUE, "LOGIN_CONTINUE" }, + + { SAMETIME_MESSAGETYPE_CHANNEL_CREATE, "CHANNEL_CREATE" }, + { SAMETIME_MESSAGETYPE_CHANNEL_DESTROY, "CHANNEL_DESTROY" }, + { SAMETIME_MESSAGETYPE_CHANNEL_SEND, "CHANNEL_SEND" }, + { SAMETIME_MESSAGETYPE_CHANNEL_ACCEPT, "CHANNEL_ACCEPT" }, + + { SAMETIME_MESSAGETYPE_SET_USER_STATUS, "SET_USER_STATUS" }, + { SAMETIME_MESSAGETYPE_SET_PRIVACY_LIST, "SET_PRIVACY_LIST" }, + { SAMETIME_MESSAGETYPE_SENSE_SERVICE, "SENSE_SERVICE" }, + { SAMETIME_MESSAGETYPE_ADMIN, "ADMIN" }, + { SAMETIME_MESSAGETYPE_ANNOUNCE, "ANNOUNCE" }, + + { 0, NULL } +}; + +#define SAMETIME_MESSAGEOPTION_ENCRYPT 0x4000 +#define SAMETIME_MESSAGEOPTION_HAS_ATTRIBS 0x8000 + +static const value_string optionnames[] = { + { 0x0, "" }, + { SAMETIME_MESSAGEOPTION_ENCRYPT, "ENCRYPT" }, + { SAMETIME_MESSAGEOPTION_HAS_ATTRIBS, "HAS_ATTRIBS" }, + { 0, NULL } +}; + +static const value_string userstatusnames[] = { + { 0x0020, "ACTIVE" }, /* I am available */ + { 0x0040, "IDLE" }, /* ? */ + { 0x0060, "AWAY" }, /* I am away */ + { 0x0080, "BUSY" }, /* Please do not disturb me */ + + { 0x0008, "MEETING" }, /* I have a meeting */ + { 0, NULL } +}; + +#define SAMETIME_SENDTYPE_AWARE_ADD 0x0068 +#define SAMETIME_SENDTYPE_OPT_DO_SET 0x00c9 +#define SAMETIME_SENDTYPE_AWARE_SNAPSHOT 0x01f4 +#define SAMETIME_SENDTYPE_AWARE_UPDATE 0x01f5 +#define SAMETIME_SENDTYPE_OPT_GOT_SET 0x0259 + +static const value_string sendtypenames[] = { + { SAMETIME_SENDTYPE_AWARE_ADD, "AWARE_ADD" }, + { 0x0069, "AWARE_REMOVE" }, + { SAMETIME_SENDTYPE_OPT_DO_SET, "OPT_DO_SET" }, + { 0x00cb, "OPT_WATCH" }, + { SAMETIME_SENDTYPE_AWARE_SNAPSHOT, "AWARE_SNAPSHOT" }, + { SAMETIME_SENDTYPE_AWARE_UPDATE, "AWARE_UPDATE" }, + { SAMETIME_SENDTYPE_OPT_GOT_SET, "OPT_GOT_SET" }, + { 0x025a, "?" }, + { 0x025d, "OPT_DID_SET" }, + + { 0, NULL } +}; + +static const value_string awarenessnames[] = { + { 0x0002, "USER" }, + { 0x0003, "GROUP" }, + { 0x0008, "SERVER" }, + { 0, NULL } +}; + +static const value_string codenames[] = { + { 0x00000011, "SERVICE_AWARE" }, + { 0x00000015, "SERVICE_RESOLVE" }, + { 0x00000018, "SERVICE_STORAGE" }, + { 0x0000001a, "SERVICE_DIRECTORY" }, + + { 0x80000011, "ERR_USER_SKETCHY" }, + { 0x80000015, "ERR_TOKEN_INVALID" }, + { 0x80000018, "ERR_PORT_IN_USE" }, + { 0x80000022, "ERR_CHANNEL_DESTROYED" }, + + { 0, NULL } +}; + + +static int +add_text_item(tvbuff_t *tvb, proto_tree *tree, int offset, int hf) +{ + guint16 length; + + /* heuristic rule, string should start w/ valid character(s) */ + if (! tvb_get_guint8(tvb, offset + 2)) + return 0; + + length = tvb_get_ntohs(tvb, offset); + if (length) { + /* the string length must not exceed the packet length */ + if (length > tvb_length_remaining(tvb, offset + 2)) + return 0; + + /* add string length only if preferences is set */ + if (global_sametime_show_length) + proto_tree_add_item(tree, hf_sametime_field_length, tvb, offset, 2, FALSE); + + /* add string */ + proto_tree_add_string(tree, hf, tvb, offset + 2, length, tvb_get_string(tvb, offset + 2, length)); + } + + return 2 + length; +} + + +static guint16 +dissect_set_user_status(tvbuff_t *tvb, proto_tree *tree, int offset) +{ + guint16 user_status; + + user_status = tvb_get_ntohs(tvb, offset); + proto_item_append_text(tree, ", %s", val_to_str(user_status, userstatusnames, "0x%04x")); + proto_tree_add_item(tree, hf_sametime_user_status, tvb, offset, 2, FALSE); + offset += 2; + proto_tree_add_item(tree, hf_sametime_time, tvb, offset, 4, FALSE); + offset += 4; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + + return user_status; +} + + +static int +dissect_handshake(tvbuff_t *tvb, proto_tree *tree, int offset) +{ + proto_tree_add_item(tree, hf_sametime_handshake_major, tvb, offset, 2, FALSE); + offset += 2; + proto_tree_add_item(tree, hf_sametime_handshake_minor, tvb, offset, 2, FALSE); + offset += 2; + offset += 4; + proto_tree_add_item(tree, hf_sametime_handshake_srvrcalc_addr, tvb, offset, 4, FALSE); + offset += 4; + proto_tree_add_item(tree, hf_sametime_login_type, tvb, offset, 2, FALSE); + offset += 2; + proto_tree_add_item(tree, hf_sametime_handshake_loclcalc_addr, tvb, offset, 4, FALSE); + offset += 4; + offset += 6; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + offset += 8; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + + return offset; +} + + +static void +dissect_handshake_ack(tvbuff_t *tvb, proto_tree *tree, int offset) +{ + proto_tree_add_item(tree, hf_sametime_handshake_major, tvb, offset, 2, FALSE); + offset += 2; + proto_tree_add_item(tree, hf_sametime_handshake_minor, tvb, offset, 2, FALSE); + offset += 2; + proto_tree_add_item(tree, hf_sametime_handshake_loclcalc_addr, tvb, offset, 4, FALSE); + offset += 4; + offset += 4; + offset += 4; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); +} + + +static void +dissect_login(tvbuff_t *tvb, proto_tree *tree, int offset) +{ + offset += 2; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); +} + + +static void +dissect_login_redirect(tvbuff_t *tvb, proto_tree *tree, int offset) +{ + offset += 2; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); +} + + +static void +dissect_login_ack(tvbuff_t *tvb, proto_tree *tree, int offset) +{ + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + proto_tree_add_item(tree, hf_sametime_login_type, tvb, offset, 2, FALSE); + offset += 2; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + offset += 3; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + proto_tree_add_item(tree, hf_sametime_handshake_loclcalc_addr, tvb, offset, 4, FALSE); + offset += 4; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + offset += 21; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); +} + + +static void +dissect_channel_create(tvbuff_t *tvb, proto_tree *tree, int offset) +{ + offset += 4; + proto_tree_add_item(tree, hf_sametime_channel_id, tvb, offset, 4, FALSE); + offset += 4; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + proto_tree_add_item(tree, hf_sametime_channel_service, tvb, offset, 4, FALSE); + offset += 4; + offset += 8; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); +} + + +static guint16 +dissect_channel_send(tvbuff_t *tvb, proto_tree *tree, int offset) +{ + guint16 send_type, awareness; + guint na; + + send_type = tvb_get_ntohs(tvb, offset); + proto_item_append_text(tree, ", %s", val_to_str(send_type, sendtypenames, "0x%04x")); + proto_tree_add_item(tree, hf_sametime_channel_send_type, tvb, offset, 2, FALSE); + offset += 2; + + switch (send_type) { + case SAMETIME_SENDTYPE_AWARE_ADD: + offset += 8; + awareness = tvb_get_ntohs(tvb, offset); + proto_item_append_text(tree, ", %s", val_to_str(awareness, awarenessnames, "0x%04x")); + proto_tree_add_item(tree, hf_sametime_channel_awareness, tvb, offset, 2, FALSE); + offset += 2; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + + break; + + case SAMETIME_SENDTYPE_OPT_DO_SET: + offset += 20; + na = tvb_get_ntohl(tvb, offset); + offset += 4; + if (na == 0x33) { + offset += add_text_item(tvb, tree, offset, hf_sametime_location_country); + offset += add_text_item(tvb, tree, offset, hf_sametime_location_postalcode); + offset += add_text_item(tvb, tree, offset, hf_sametime_location_province); + offset += add_text_item(tvb, tree, offset, hf_sametime_location_city); + offset += add_text_item(tvb, tree, offset, hf_sametime_location_phone); + offset += 1; + offset += add_text_item(tvb, tree, offset, hf_sametime_location_name); + offset += add_text_item(tvb, tree, offset, hf_sametime_location_timezone); + } else { + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + } + + break; + + case SAMETIME_SENDTYPE_OPT_GOT_SET: + offset += 8; + awareness = tvb_get_ntohs(tvb, offset); + proto_item_append_text(tree, ", %s", val_to_str(awareness, awarenessnames, "0x%04x")); + proto_tree_add_item(tree, hf_sametime_channel_awareness, tvb, offset, 2, FALSE); + offset += 2; + while (tvb_length_remaining(tvb, offset) > 2) { + int n = add_text_item(tvb, tree, offset, hf_sametime_field_text); + offset += (n) ? n : 1; + } + + break; + + case SAMETIME_SENDTYPE_AWARE_SNAPSHOT: + offset += 12; + awareness = tvb_get_ntohs(tvb, offset); + proto_item_append_text(tree, ", %s", val_to_str(awareness, awarenessnames, "0x%04x")); + proto_tree_add_item(tree, hf_sametime_channel_awareness, tvb, offset, 2, FALSE); + offset += 2; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + + break; + + case SAMETIME_SENDTYPE_AWARE_UPDATE: + offset += 4; + offset += 4; + awareness = tvb_get_ntohs(tvb, offset); + proto_item_append_text(tree, ", %s", val_to_str(awareness, awarenessnames, "0x%04x")); + proto_tree_add_item(tree, hf_sametime_channel_awareness, tvb, offset, 2, FALSE); + offset += 2; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + offset += 4; + if (tvb_get_guint8(tvb, offset)) { + offset += 1; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + dissect_set_user_status(tvb, tree, offset); + } + + break; + + case 0x0000: + offset += 14; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + + break; + + case 0x0002: + offset += 8; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + offset += 3; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + + break; + + case 0x0005: /* XML */ + if (26 <= tvb_length_remaining(tvb, offset + 2)) { + offset += 26; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + } + + break; + + case 0x0007: + offset += 8; + if (4 <= tvb_length_remaining(tvb, offset + 2)) { + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + offset += 3; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + } + + break; + + case 0x025a: + offset += 10; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + + break; + + default: + break; + } + + return send_type; +} + + +static void +dissect_channel_accept(tvbuff_t *tvb, proto_tree *tree, int offset) +{ + offset += 34; + if (tvb_length_remaining(tvb, offset + 2)) { + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + if (tvb_get_guint8(tvb, offset)) { + offset += 1; + offset += add_text_item(tvb, tree, offset, hf_sametime_field_text); + dissect_set_user_status(tvb, tree, offset); + } + } +} + + +static void +dissect_sense_service(tvbuff_t *tvb, proto_tree *tree, int offset) +{ + guint32 code; + + code = tvb_get_ntohl(tvb, offset); + proto_item_append_text(tree, ", %s", val_to_str(code, codenames, "0x%04x")); + proto_tree_add_item(tree, hf_sametime_code, tvb, offset, 4, FALSE); + offset += 4; +} + + +/* + here we really dissect the message(s) +*/ +static void +dissect_sametime_content(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + proto_tree *sametime_tree; + proto_item *ti; + static SametimeTap *sinfo; + gint message_type; + int packet_length, offset = 0; + + /* we expect either 1 heartbeat byte (0x80) or a sametime message */ + packet_length = tvb_length_remaining(tvb, offset); + if (packet_length == 1) { + message_type = tvb_get_guint8(tvb, 0); + + } else if (packet_length < 12) { + message_type = -1; + + } else { + message_type = tvb_get_ntohs(tvb, 4); + } + + /* add message type */ + col_append_str(pinfo->cinfo, COL_INFO, val_to_str(message_type, messagetypenames, "0x%04x")); + col_append_str(pinfo->cinfo, COL_INFO, " "); + + /* message type statistic */ + sinfo = ep_alloc(sizeof(struct SametimeTap )); + sinfo->message_type = message_type; + sinfo->send_type = -1; + sinfo->user_status = -1; + + /* packet detail tree */ + ti = proto_tree_add_item(tree, proto_sametime, tvb, offset, -1, FALSE); + sametime_tree = proto_item_add_subtree(ti, ett_sametime); + proto_item_append_text(sametime_tree, ", %s", val_to_str(message_type, messagetypenames, "0x%04x")); + + /* dissect message */ + if (message_type == SAMETIME_MESSAGETYPE_HEARTBEAT) { + proto_tree_add_item(sametime_tree, hf_sametime_heartbeat, tvb, offset, 1, FALSE); + + } else if (message_type != -1) { + proto_tree *options_tree; + proto_item *op; + + /* first 4 bytes gives the length of the sametime message */ + if (global_sametime_show_length) { + proto_tree_add_item(sametime_tree, hf_sametime_message_length, tvb, offset, 4, FALSE); + } + offset += 4; + + /* next 2 bytes gives the message type */ + proto_tree_add_item(sametime_tree, hf_sametime_message_type, tvb, offset, 2, FALSE); + offset += 2; + + /* next 2 bytes are the message options */ + op = proto_tree_add_item(sametime_tree, hf_sametime_message_options, tvb, offset, 2, FALSE); + options_tree = proto_item_add_subtree(op, ett_sametime_options); + proto_tree_add_item(options_tree, hf_sametime_message_options_attribute, tvb, offset, 2, FALSE); + proto_tree_add_item(options_tree, hf_sametime_message_options_encrypted, tvb, offset, 2, FALSE); + offset += 2; + + /* next 4 bytes contains the channel id */ + proto_tree_add_item(sametime_tree, hf_sametime_message_channel, tvb, offset, 4, FALSE); + offset += 4; + + switch (message_type) + { + case SAMETIME_MESSAGETYPE_HANDSHAKE: + dissect_handshake(tvb, sametime_tree, offset); + break; + + case SAMETIME_MESSAGETYPE_HANDSHAKE_ACK: + dissect_handshake_ack(tvb, sametime_tree, offset); + break; + + case SAMETIME_MESSAGETYPE_LOGIN: + dissect_login(tvb, sametime_tree, offset); + break; + + case SAMETIME_MESSAGETYPE_LOGIN_REDIRECT: + dissect_login_redirect(tvb, sametime_tree, offset); + break; + + case SAMETIME_MESSAGETYPE_LOGIN_ACK: + dissect_login_ack(tvb, sametime_tree, offset); + break; + + case SAMETIME_MESSAGETYPE_CHANNEL_CREATE: + dissect_channel_create(tvb, sametime_tree, offset); + break; + + case SAMETIME_MESSAGETYPE_CHANNEL_SEND: + sinfo->send_type = dissect_channel_send(tvb, sametime_tree, offset); + break; + + case SAMETIME_MESSAGETYPE_CHANNEL_ACCEPT: + dissect_channel_accept(tvb, sametime_tree, offset); + break; + + case SAMETIME_MESSAGETYPE_SET_USER_STATUS: + sinfo->user_status = dissect_set_user_status(tvb, sametime_tree, offset); + break; + + case SAMETIME_MESSAGETYPE_SENSE_SERVICE: + dissect_sense_service(tvb, sametime_tree, offset); + break; + + default: + break; + } + } + + tap_queue_packet(sametime_tap, pinfo, sinfo); +} + + +/* + tick statistics +*/ +static int +sametime_stats_tree_packet(stats_tree* st, packet_info* pinfo _U_, epan_dissect_t* edt _U_, const void* p) +{ + struct SametimeTap *pi = (struct SametimeTap *)p; + + tick_stat_node(st, st_str_packet, 0, FALSE); + if (pi->message_type != -1) + stats_tree_tick_pivot(st, st_node_message_type, val_to_str(pi->message_type, messagetypenames, "Unknown (0x%04x)")); + + if (pi->send_type != -1) + stats_tree_tick_pivot(st, st_node_send_type, val_to_str(pi->send_type, sendtypenames, "Unknown (0x%04x)")); + + if (pi->user_status != -1) + stats_tree_tick_pivot(st, st_node_user_status, val_to_str(pi->user_status, userstatusnames, "Unknown (0x%04x)")); + + return 1; +} + + +/* + init statistic +*/ +static void +sametime_stats_tree_init(stats_tree* st) +{ + st_node_packet = stats_tree_create_node(st, st_str_packet, 0, TRUE); + st_node_message_type = stats_tree_create_pivot(st, st_str_message_type, st_node_packet); + st_node_send_type = stats_tree_create_pivot(st, st_str_send_type, st_node_packet); + st_node_user_status = stats_tree_create_pivot(st, st_str_user_status, st_node_packet); +} + + +/* + length of the sametime message +*/ +static guint +get_sametime_message_len(packet_info *pinfo _U_, tvbuff_t *tvb, int offset) +{ guint32 N = tvb_length_remaining(tvb, offset); + + return (N < 4) ? N : tvb_get_ntohl(tvb, offset) + 4; +} + + +/* + the dissector itself +*/ +static void +dissect_sametime(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + col_set_str(pinfo->cinfo, COL_PROTOCOL, "SAMETIME"); + col_clear(pinfo->cinfo,COL_INFO); + + tcp_dissect_pdus(tvb, pinfo, tree, global_sametime_reassemble_packets, 4, + get_sametime_message_len, dissect_sametime_content); +} + + +void +proto_register_sametime(void) +{ + static hf_register_info hf[] = { + /*tcp payload is one byte : SAMETIME_MESSAGETYPE_HEARTBEAT*/ + { &hf_sametime_heartbeat, + { "heartbeat", "sametime.heartbeat", + FT_UINT8, BASE_HEX, + NULL, 0x0, + NULL, HFILL } + }, + + /*sametime message header*/ + { &hf_sametime_message_length, + { "msg length", "sametime.message_length", + FT_UINT32, BASE_DEC, + NULL, 0, + NULL, HFILL } + }, + { &hf_sametime_message_type, + { "msg type", "sametime.message_type", + FT_UINT16, BASE_HEX, + VALS(messagetypenames), 0x0, + NULL, HFILL } + }, + { &hf_sametime_message_options, + { "msg options", "sametime.message_options", + FT_UINT16, BASE_HEX, + VALS(optionnames), 0x0, + NULL, HFILL } + }, + { &hf_sametime_message_options_encrypted, + { "ENCRYPT", "sametime.message_options.encrypted", + FT_BOOLEAN, 16, + NULL, SAMETIME_MESSAGEOPTION_ENCRYPT, + NULL, HFILL } + }, + { &hf_sametime_message_options_attribute, + { "HAS_ATTRIBS", "sametime.message_options.attribute", + FT_BOOLEAN, 16, + NULL, SAMETIME_MESSAGEOPTION_HAS_ATTRIBS, + NULL, HFILL } + }, + { &hf_sametime_message_channel, + { "msg channel", "sametime.message_channel", + FT_UINT32, BASE_DEC, + NULL, 0, + NULL, HFILL } + }, + + /*common fields within various message types*/ + { &hf_sametime_field_length, + { "length", "sametime.field_length", + FT_UINT16, BASE_DEC, + NULL, 0, + NULL, HFILL } + }, + { &hf_sametime_field_text, + { "text", "sametime.field_text", + FT_STRING, BASE_NONE, + NULL, 0x0, + NULL, HFILL } + }, + { &hf_sametime_code, + { "code", "sametime.code", + FT_UINT32, BASE_HEX, + VALS(codenames), 0x0, + NULL, HFILL } + }, + { &hf_sametime_login_type, + { "login type", "sametime.login_type", + FT_UINT16, BASE_HEX, + NULL, 0x0, + NULL, HFILL } + }, + { &hf_sametime_time, + { "time", "sametime.time", + FT_UINT32, BASE_DEC, + NULL, 0, + NULL, HFILL } + }, + + /*type handshake*/ + { &hf_sametime_handshake_major, + { "major", "sametime.handshake.major", + FT_UINT16, BASE_HEX, + NULL, 0x0, + NULL, HFILL } + }, + { &hf_sametime_handshake_minor, + { "minor", "sametime.handshake.minor", + FT_UINT16, BASE_HEX, + NULL, 0x0, + NULL, HFILL } + }, + { &hf_sametime_handshake_srvrcalc_addr, + { "srvr", "sametime.handshake.srvrcalc_addr", + FT_IPv4, BASE_NONE, + NULL, 0x0, + NULL, HFILL } + }, + { &hf_sametime_handshake_loclcalc_addr, + { "locl", "sametime.handshake.loclcalc_addr", + FT_IPv4, BASE_NONE, + NULL, 0x0, + NULL, HFILL } + }, + + /*type channel*/ + { &hf_sametime_channel_service, + { "service id", "sametime.channel.service", + FT_UINT32, BASE_DEC, + NULL, 0, + NULL, HFILL } + }, + { &hf_sametime_channel_id, + { "channel id", "sametime.channel.id", + FT_UINT32, BASE_DEC, + NULL, 0, + NULL, HFILL } + }, + { &hf_sametime_channel_send_type, + { "send type", "sametime.channel.send_type", + FT_UINT16, BASE_HEX, + VALS(sendtypenames), 0, + NULL, HFILL } + }, + { &hf_sametime_channel_awareness, + { "awareness", "sametime.channel.awareness", + FT_UINT16, BASE_HEX, + VALS(awarenessnames), 0x0, + NULL, HFILL } + }, + + /*type user status*/ + { &hf_sametime_user_status, + { "user status", "sametime.user_status_type", + FT_UINT16, BASE_HEX, + VALS(userstatusnames), 0x0, + NULL, HFILL } + }, + + /*type location*/ + { &hf_sametime_location_name, + { "name", "sametime.location.name", + FT_STRING, BASE_NONE, + NULL, 0x0, + NULL, HFILL } + }, + { &hf_sametime_location_city, + { "city", "sametime.location.city", + FT_STRING, BASE_NONE, + NULL, 0x0, + NULL, HFILL } + }, + { &hf_sametime_location_province, + { "province", "sametime.location.province", + FT_STRING, BASE_NONE, + NULL, 0x0, + NULL, HFILL } + }, + { &hf_sametime_location_postalcode, + { "postal code", "sametime.location.postalcode", + FT_STRING, BASE_NONE, + NULL, 0x0, + NULL, HFILL } + }, + { &hf_sametime_location_country, + { "country", "sametime.location.country", + FT_STRING, BASE_NONE, + NULL, 0x0, + NULL, HFILL } + }, + { &hf_sametime_location_phone, + { "phone", "sametime.location.phone", + FT_STRING, BASE_NONE, + NULL, 0x0, + NULL, HFILL } + }, + { &hf_sametime_location_timezone, + { "time zone", "sametime.location.timezone", + FT_STRING, BASE_NONE, + NULL, 0x0, + NULL, HFILL } + }, + }; + + static gint *ett[] = { + &ett_sametime, + &ett_sametime_options + }; + + module_t *sametime_module; + + proto_sametime = proto_register_protocol ( + "Sametime Protocol", /* name */ + "SAMETIME", /* short name */ + "sametime" /* abbrev */ + ); + proto_register_field_array(proto_sametime, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + + sametime_tap = register_tap("sametime"); + + /* Preference setting */ + sametime_module = prefs_register_protocol(proto_sametime, NULL); + prefs_register_bool_preference(sametime_module, "show_length", + "Show length", + "Show length of text field", + &global_sametime_show_length); + prefs_register_bool_preference(sametime_module, "reassemble", + "Reassemble","reassemble packets", + &global_sametime_reassemble_packets); + prefs_register_uint_preference(sametime_module, "tcp_port", + "SAMETIME port number", + "port number for sametime traffic", + 10, &global_sametime_port); +} + +/* + create / register +*/ +void +proto_reg_handoff_sametime(void) +{ + static gboolean initialized = FALSE; + static guint saved_sametime_tcp_port; + + if (!initialized) { + sametime_handle = create_dissector_handle(dissect_sametime, proto_sametime); + initialized = TRUE; + } else { + dissector_delete("tcp.port", saved_sametime_tcp_port, sametime_handle); + } + + dissector_add("tcp.port", global_sametime_port, sametime_handle); + saved_sametime_tcp_port = global_sametime_port; + + stats_tree_register("sametime", "sametime", "Sametime/Messages", 0, + sametime_stats_tree_packet, + sametime_stats_tree_init, NULL ); +} +