diff options
Diffstat (limited to 'plugins/unistim/packet-unistim.c')
| -rw-r--r-- | plugins/unistim/packet-unistim.c | 225 |
1 files changed, 216 insertions, 9 deletions
diff --git a/plugins/unistim/packet-unistim.c b/plugins/unistim/packet-unistim.c index 1a7d6e6484..c455627ec7 100644 --- a/plugins/unistim/packet-unistim.c +++ b/plugins/unistim/packet-unistim.c @@ -30,13 +30,128 @@ #include <glib.h> #include <epan/packet.h> +#include <epan/tap.h> #include <epan/emem.h> #include <string.h> #include "packet-unistim.h" -#include "header_field.h" +#include "defines.h" +#include "audio.h" +#include "basic.h" +#include "display.h" +#include "network.h" +#include "key.h" +#include "broadcast.h" + +static int global_unistim_port = 5000; + +static unistim_info_t *uinfo; +static int unistim_tap = -1; + +static void dissect_payload(proto_tree *unistim_tree,tvbuff_t *tvb,gint offset, packet_info *pinfo); +static void dissect_unistim(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree); +static dissector_handle_t unistim_handle; + +static void dissect_broadcast_switch(proto_tree *msg_tree,proto_tree *unistim_tree, + tvbuff_t *tvb,gint offset,guint msg_len); +static void dissect_audio_switch(proto_tree *msg_tree,proto_tree *unistim_tree, + tvbuff_t *tvb,gint offset,guint msg_len); +static void dissect_display_switch(proto_tree *msg_tree,proto_tree *unistim_tree, + tvbuff_t *tvb,gint offset,guint msg_len); +static void dissect_key_indicator_switch(proto_tree *msg_tree,proto_tree *unistim_tree, + tvbuff_t *tvb,gint offset,guint msg_len); +static void dissect_basic_switch(proto_tree *msg_tree,proto_tree *unistim_tree, + tvbuff_t *tvb,gint offset,guint msg_len); +static void dissect_network_switch(proto_tree *msg_tree,proto_tree *unistim_tree, + tvbuff_t *tvb,gint offset,guint msg_len); +static void dissect_broadcast_phone(proto_tree *msg_tree,proto_tree *unistim_tree, + tvbuff_t *tvb,gint offset,guint msg_len); +static void dissect_audio_phone(proto_tree *msg_tree,proto_tree *unistim_tree, + tvbuff_t *tvb,gint offset,guint msg_len); +static void dissect_display_phone(proto_tree *msg_tree,proto_tree *unistim_tree, + tvbuff_t *tvb,gint offset,guint msg_len); +static void dissect_key_indicator_phone(proto_tree *msg_tree,proto_tree *unistim_tree, + tvbuff_t *tvb,gint offset,guint msg_len); +static void dissect_basic_phone(proto_tree *msg_tree,proto_tree *unistim_tree, + tvbuff_t *tvb,gint offset,guint msg_len); +static void dissect_network_phone(proto_tree *msg_tree,proto_tree *unistim_tree, + tvbuff_t *tvb,gint offset,guint msg_len); +static void dissect_message(proto_tree *unistim_tree, tvbuff_t *tvb,gint offset); +static void set_ascii_item(proto_tree *unistim_tree, tvbuff_t *tvb, + gint offset,guint msg_len); +static void set_ascii_null_term_item(proto_tree *msg_tree,tvbuff_t *tvb, + gint offset,guint msg_len, char *label); + + +static int proto_unistim = -1; +static int hf_unistim_seq_nu = -1; +static int hf_unistim_packet_type = -1; +static int hf_unistim_payload = -1; +static int hf_unistim_cmd_add = -1; +static int hf_unistim_len =-1; +static int hf_terminal_id=-1; +static int hf_basic_bit_field=-1; +static const true_false_string basic_bit_yn={ + "For Following Byte", + "For Following Byte" +}; + +static int hf_basic_switch_cmd=-1; +static int hf_basic_phone_cmd=-1; +static int hf_broadcast_switch_cmd=-1; +static int hf_broadcast_phone_cmd=-1; +static int hf_audio_switch_cmd=-1; +static int hf_audio_phone_cmd=-1; +static int hf_display_switch_cmd=-1; +static int hf_display_phone_cmd=-1; +static int hf_key_switch_cmd=-1; +static int hf_key_phone_cmd=-1; +static int hf_network_switch_cmd=-1; +static int hf_network_phone_cmd=-1; + + +static int hf_generic_data=-1; +static int hf_generic_string=-1; +static gint ett_unistim = -1; -static int global_unistim_port = 0; +static const value_string packet_names[]={ + {0,"NAK"}, + {1,"ACK"}, + {2,"Payload"}, + {0,NULL} +}; + +static const value_string payload_names[]={ + {0x00,"NULL Protocol"}, + {0x01,"Aggregate Unistim"}, + {0x02,"Aggregate Unistim with Terminal ID"}, + {0xff,"Free Form Protocol"}, + {0,NULL} +}; + +static const range_string sequence_numbers[]={ + {0x00,0xFFFFFFFE,"Normal Sequence Number"}, + {0xFFFFFFFF,0xFFFFFFFF, "RESET Sequence Number"}, + {0,0,NULL} +}; + +static const value_string command_address[]={ + {0x11,"Broadcast Manager Switch"}, + {0x16,"Audio Manager Switch"}, + {0x17,"Display Manager Switch"}, + {0x19,"Key/Indicator Manager Switch"}, + {0x1a,"Basic Manager Switch"}, + {0x1e,"Network Manager Switch"}, + {0x91,"Broadcast Manager Phone"}, + {0x96,"Audio Manager Phone"}, + {0x97,"Display Manager Phone"}, + {0x99,"Key/Indicator Manager Phone"}, + {0x9a,"Basic Manager Phone"}, + {0x9e,"Network Manager Phone"}, + {0,NULL} +}; + +#include "header_field.h" void proto_register_unistim(void){ @@ -56,6 +171,8 @@ proto_register_unistim(void){ proto_register_subtree_array(ett,array_length(ett)); proto_register_field_array(proto_unistim,hf,array_length(hf)); + + unistim_tap = register_tap("unistim"); } void @@ -86,10 +203,33 @@ dissect_unistim(tvbuff_t *tvb,packet_info *pinfo,proto_tree *tree){ overall_unistim_tree = proto_item_add_subtree(ti,ett_unistim); ti1=proto_tree_add_text(overall_unistim_tree,tvb,offset,5,"Reliable UDP"); rudpm_tree=proto_item_add_subtree(ti1,ett_unistim); + proto_tree_add_item(rudpm_tree,hf_unistim_seq_nu,tvb,offset,4,FALSE); - offset+=4; + /* Allocate new mem for queueing */ + uinfo = se_alloc(sizeof(unistim_info_t)); + + /* Clear tap struct */ + uinfo->rudp_type = 0; + uinfo->payload_type = 0; + uinfo->sequence = tvb_get_ntohl(tvb,offset); + uinfo->termid = 0; + uinfo->key_val = -1; + uinfo->key_state = -1; + uinfo->hook_state = -1; + uinfo->stream_connect = -1; + uinfo->trans_connect = -1; + uinfo->set_termid = -1; + uinfo->string_data = NULL; + uinfo->key_buffer = NULL; + SET_ADDRESS(&uinfo->it_ip, AT_NONE, 0, NULL); + SET_ADDRESS(&uinfo->ni_ip, AT_NONE, 0, NULL); + uinfo->it_port = 0; + + offset+=4; proto_tree_add_item(rudpm_tree,hf_unistim_packet_type,tvb,offset,1,FALSE); + uinfo->rudp_type = tvb_get_guint8(tvb,offset); + switch(tvb_get_guint8(tvb,offset)) { case 0x00: /*NAK*/ @@ -107,10 +247,8 @@ dissect_unistim(tvbuff_t *tvb,packet_info *pinfo,proto_tree *tree){ if (check_col(pinfo->cinfo, COL_INFO)) col_add_fstr(pinfo->cinfo, COL_INFO, "Payload seq - 0x%X", tvb_get_ntohl(tvb, offset-4)); - if(tree){ /*we are being asked for details*/ - offset+=1; - dissect_payload(overall_unistim_tree,tvb,offset); - } + offset+=1; + dissect_payload(overall_unistim_tree,tvb,offset,pinfo); break; default: if (check_col(pinfo->cinfo, COL_INFO)) @@ -118,26 +256,45 @@ dissect_unistim(tvbuff_t *tvb,packet_info *pinfo,proto_tree *tree){ tvb_get_ntohl(tvb, offset-4)); break; } + + /* Queue packet for tap */ + tap_queue_packet(unistim_tap, pinfo, uinfo); } static void -dissect_payload(proto_tree *overall_unistim_tree,tvbuff_t *tvb, gint offset){ +dissect_payload(proto_tree *overall_unistim_tree,tvbuff_t *tvb, gint offset, packet_info *pinfo){ proto_item *ti; proto_tree *unistim_tree; guint payload_proto=tvb_get_guint8(tvb,offset); + + /* Payload type for tap */ + uinfo->payload_type = payload_proto; + ti=proto_tree_add_item(overall_unistim_tree,hf_unistim_payload, tvb,offset,1,FALSE); offset+=1; unistim_tree=proto_item_add_subtree(ti,ett_unistim); + switch(payload_proto){ case 0x00: /*NULL PROTO - NOTHING LEFT TO DO*/ return; case 0x01: /*UNISTIM only so no term id but further payload work*/ + /* Collect info for tap */ + /* If no term id then packet sourced from NI */ + COPY_ADDRESS(&(uinfo->ni_ip), &(pinfo->src)); + COPY_ADDRESS(&(uinfo->it_ip), &(pinfo->dst)); + uinfo->it_port = pinfo->destport; break; case 0x02: /*UNISTIM with term id*/ + /* Termid packs are always sourced from the it, so collect relevant infos */ + COPY_ADDRESS(&(uinfo->ni_ip),&(pinfo->dst)); + COPY_ADDRESS(&(uinfo->it_ip),&(pinfo->src)); + uinfo->it_port = pinfo->srcport; + uinfo->termid = tvb_get_ntohl(tvb,offset); + proto_tree_add_item(unistim_tree,hf_terminal_id,tvb,offset,4,FALSE); offset+=4; break; @@ -146,6 +303,7 @@ dissect_payload(proto_tree *overall_unistim_tree,tvbuff_t *tvb, gint offset){ break; } + dissect_message(unistim_tree,tvb,offset); } @@ -158,13 +316,19 @@ dissect_message(proto_tree *unistim_tree,tvbuff_t *tvb,gint offset){ proto_tree *msg_tree; ti = proto_tree_add_text(unistim_tree,tvb,offset,-1,"Unistim CMD"); + msg_tree = proto_item_add_subtree(ti,ett_unistim); + address=tvb_get_guint8(tvb,offset); + proto_tree_add_item(msg_tree,hf_unistim_cmd_add,tvb,offset,1,FALSE); + offset+=1; msg_len=tvb_get_guint8(tvb,offset); + proto_item_set_len(ti, msg_len); proto_tree_add_item(msg_tree,hf_unistim_len,tvb,offset,1,FALSE); + offset+=1; /*from switch*/ switch(address){ @@ -222,6 +386,7 @@ dissect_message(proto_tree *unistim_tree,tvbuff_t *tvb,gint offset){ default: /*See some undocumented messages. Don't want to miss the ones we understand*/ proto_tree_add_item(msg_tree,hf_generic_data,tvb,offset,msg_len-2,FALSE); + offset+=(msg_len-2); if (tvb_length_remaining(tvb,offset) > 0){ next_byte=tvb_get_guint8(tvb,offset); @@ -241,7 +406,9 @@ dissect_basic_phone(proto_tree *msg_tree, proto_tree *unistim_tree, proto_item *ti; basic_cmd=tvb_get_guint8(tvb,offset); + ti=proto_tree_add_item(msg_tree,hf_basic_phone_cmd,tvb,offset,1,FALSE); + offset+=1;msg_len-=1; switch(basic_cmd){ @@ -366,6 +533,9 @@ dissect_basic_switch(proto_tree *msg_tree, proto_tree *unistim_tree, break; case 0x07: /*Assign Terminal ID*/ + /* Set tap info */ + uinfo->set_termid = 1; + proto_tree_add_item(msg_tree,hf_basic_switch_terminal_id, tvb,offset,msg_len,FALSE); offset+=msg_len; @@ -766,8 +936,12 @@ dissect_display_switch(proto_tree *msg_tree, proto_tree *unistim_tree, tvb,offset,1,FALSE); offset+=1;msg_len-=1; } - if(msg_len>0) + if(msg_len>0){ + /* I'm guessing this will work flakily at best */ + uinfo->string_data = tvb_get_string(tvb,offset,msg_len); set_ascii_item(msg_tree,tvb,offset,msg_len); + } + offset+=msg_len; break; case 0x1a: @@ -1342,6 +1516,12 @@ dissect_key_indicator_phone(proto_tree *msg_tree, proto_tree *unistim_tree, case 0x00: /*Key Event*/ + /* Set the tap info */ + uinfo->key_state = tvb_get_guint8(tvb,offset); + uinfo->key_state >>= 6; + /* Extract the key code */ + uinfo->key_val = (tvb_get_guint8(tvb,offset) & 0x3F); + proto_tree_add_item(msg_tree,hf_basic_bit_field,tvb,offset,1,FALSE); proto_tree_add_item(msg_tree,hf_key_code,tvb,offset,1,FALSE); proto_tree_add_item(msg_tree,hf_key_command,tvb,offset,1,FALSE); @@ -1354,9 +1534,15 @@ dissect_key_indicator_phone(proto_tree *msg_tree, proto_tree *unistim_tree, break; case 0x03: /*On Hook length = 3*/ + /* Set tap info.. */ + uinfo->hook_state = 0; + break; case 0x04: /*Off Hook length = 3*/ + /* Set tap info.. */ + uinfo->hook_state = 1; + break; case 0x05: /*User Activity Timer Expired length = 3*/ @@ -1895,6 +2081,9 @@ dissect_audio_switch(proto_tree *msg_tree,proto_tree *unistim_tree, break; case 0x30: /*Open Audio Stream*/ + /* Set the tap info */ + uinfo->stream_connect = 1; + proto_tree_add_item(msg_tree,hf_audio_rx_stream_id,tvb,offset,1,FALSE); offset+=1;msg_len-=1; proto_tree_add_item(msg_tree,hf_audio_tx_stream_id,tvb,offset,1,FALSE); @@ -1934,6 +2123,9 @@ dissect_audio_switch(proto_tree *msg_tree,proto_tree *unistim_tree, break; case 0x31: /*Close Audio Stream*/ + /* Set the tap info */ + uinfo->stream_connect = 0; + proto_tree_add_item(msg_tree,hf_audio_rx_stream_id,tvb,offset,1,FALSE); offset+=1;msg_len-=1; proto_tree_add_item(msg_tree,hf_audio_tx_stream_id,tvb,offset,1,FALSE); @@ -1941,6 +2133,9 @@ dissect_audio_switch(proto_tree *msg_tree,proto_tree *unistim_tree, break; case 0x32: /*Connect Transducer*/ + /* Tap info again */ + uinfo->trans_connect = 1; + proto_tree_add_item(msg_tree,hf_basic_bit_field, tvb,offset,1,FALSE); proto_tree_add_item(msg_tree,hf_audio_transducer_pair,tvb,offset,1,FALSE); proto_tree_add_item(msg_tree,hf_audio_rx_enable,tvb,offset,1,FALSE); @@ -2084,21 +2279,33 @@ dissect_audio_phone(proto_tree *msg_tree,proto_tree *unistim_tree, switch(audio_cmd){ case 0x00: /*Handset Connected length =3*/ + /* Set the tap info */ + uinfo->hook_state = 1; break; case 0x01: /*Handset Disconnected length =3*/ + /* Set the tap info */ + uinfo->hook_state = 0; break; case 0x02: /*Headset Connected length =3*/ + /* Set the tap info */ + uinfo->hook_state = 1; break; case 0x03: /*Headset Disconnected length =3*/ + /* Set the tap info */ + uinfo->hook_state = 0; break; case 0x04: /*Supervisor Headset Connected length =3*/ + /* Set the tap info */ + uinfo->hook_state = 1; break; case 0x05: /*Supervisor Headset Disconnected length =3*/ + /* Set the tap info */ + uinfo->hook_state = 0; break; case 0x07: /*Audio Manager Attributes Info*/ |