static void
dissect_dmx_chan(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
col_set_str(pinfo->cinfo, COL_PROTOCOL, "DMX Channels");
col_clear(pinfo->cinfo, COL_INFO);
if (tree != NULL) {
static const char *chan_format[] = {
"%2u%% ",
"0x%02x ",
"%3u "
};
static const char *string_format[] = {
"0x%03x: %s",
"%3u: %s"
};
wmem_strbuf_t *chan_str = wmem_strbuf_new_label(wmem_packet_scope());
proto_item *item;
guint16 length,r,c,row_count;
guint8 v;
guint offset = 0;
proto_tree *ti = proto_tree_add_item(tree, proto_dmx_chan, tvb, offset, -1, ENC_NA);
proto_tree *dmx_chan_tree = proto_item_add_subtree(ti, ett_dmx_chan);
length = tvb_reported_length_remaining(tvb, offset);
row_count = (length / global_disp_col_count) + ((length % global_disp_col_count) == 0 ? 0 : 1);
for (r = 0; r < row_count;r++) {
wmem_strbuf_truncate(chan_str, 0);
for (c = 0;(c < global_disp_col_count) && (((r * global_disp_col_count) + c) < length);c++) {
if ((global_disp_col_count >= 2) && ((c % (global_disp_col_count / 2)) == 0)) {
wmem_strbuf_append(chan_str, " ");
}
v = tvb_get_guint8(tvb, (offset + (r * global_disp_col_count) + c));
if (global_disp_chan_val_type == 0) {
v = (v * 100) / 255;
if (v == 100) {
wmem_strbuf_append(chan_str, "FL ");
} else {
wmem_strbuf_append_printf(chan_str, chan_format[global_disp_chan_val_type], v);
}
} else {
wmem_strbuf_append_printf(chan_str, chan_format[global_disp_chan_val_type], v);
}
}
proto_tree_add_none_format(dmx_chan_tree, hf_dmx_chan_output_dmx_data, tvb,
offset+(r * global_disp_col_count), c,
string_format[global_disp_chan_nr_type],
(r * global_disp_col_count) + 1, wmem_strbuf_get_str(chan_str));
}
/* Add the real type hidden */
item = proto_tree_add_item(dmx_chan_tree, hf_dmx_chan_output_data_filter, tvb,
offset, length, ENC_NA );
PROTO_ITEM_SET_HIDDEN(item);
}
}
/*
* Preparse the message for the info column
*/
static wmem_strbuf_t*
get_column_info(tvbuff_t *tvb)
{
int byte_length;
guint8 type_code;
wmem_strbuf_t *result_buf;
int my_offset = 0;
/* We've a full PDU: 8 bytes + pdu_packetlen bytes */
result_buf = wmem_strbuf_new_label(wmem_packet_scope());
my_offset += (4 + 4 + 1); /* skip Magic, Length, Version */
type_code = tvb_get_guint8(tvb, my_offset);
byte_length = get_byte_length(type_code);
my_offset++;
if (byte_length == 4) {
const gchar *symbol;
guint32 hash;
hash = tvb_get_ntohl(tvb, my_offset);
symbol = try_val_to_str_ext(hash, gbl_symbols_vs_ext);
if (symbol != NULL) {
wmem_strbuf_append_printf(result_buf, "%s()", symbol);
}
}
return result_buf;
}
/*
* read a number and add it to tree
*/
static void
read_number(unsigned int *offset, tvbuff_t *tvb, proto_tree *etch_tree,
int asWhat, guint8 type_code)
{
int byteLength;
read_type(offset, tvb, etch_tree);
byteLength = get_byte_length(type_code);
if (byteLength > 0) {
proto_item *ti;
const gchar *symbol = NULL;
guint32 hash = 0;
gbl_symbol_buffer = wmem_strbuf_new_label(wmem_packet_scope()); /* no symbol found yet */
if (byteLength == 4) {
hash = tvb_get_ntohl(tvb, *offset);
symbol = try_val_to_str_ext(hash, gbl_symbols_vs_ext);
if(symbol != NULL) {
asWhat = hf_etch_symbol;
gbl_have_symbol = TRUE;
wmem_strbuf_append_printf(gbl_symbol_buffer,"%s",symbol);
}
}
ti = proto_tree_add_item(etch_tree, asWhat, tvb, *offset,
byteLength, ENC_BIG_ENDIAN);
*offset += byteLength;
if (symbol != NULL) {
proto_item_append_text(ti, " (0x%08x) %s", hash, symbol);
}
}
}
static int
ssh_dissect_ssh2(tvbuff_t *tvb, packet_info *pinfo,
struct ssh_flow_data *global_data,
int offset, proto_tree *tree, int is_response,
gboolean *need_desegmentation)
{
proto_item *ssh2_tree=NULL;
struct ssh_peer_data *peer_data = &global_data->peer_data[is_response];
if (tree) {
wmem_strbuf_t *title=wmem_strbuf_new(wmem_packet_scope(), "SSH Version 2");
if (peer_data->enc || peer_data->mac || peer_data->comp) {
wmem_strbuf_append_printf(title, " (");
if (peer_data->enc)
wmem_strbuf_append_printf(title, "encryption:%s%s",
peer_data->enc,
peer_data->mac || peer_data->comp
? " " : "");
if (peer_data->mac)
wmem_strbuf_append_printf(title, "mac:%s%s",
peer_data->mac,
peer_data->comp ? " " : "");
if (peer_data->comp)
wmem_strbuf_append_printf(title, "compression:%s",
peer_data->comp);
wmem_strbuf_append_printf(title, ")");
}
ssh2_tree=proto_tree_add_subtree(tree, tvb, offset, -1, ett_ssh2, NULL, wmem_strbuf_get_str(title));
}
if ((peer_data->frame_key_start == 0) ||
((peer_data->frame_key_start <= pinfo->fd->num) &&
((peer_data->frame_key_end == 0) || (pinfo->fd->num <= peer_data->frame_key_end)))) {
offset = ssh_dissect_key_exchange(tvb, pinfo, global_data,
offset, ssh2_tree, is_response,
need_desegmentation);
} else {
offset = ssh_dissect_encrypted_packet(tvb, pinfo,
&global_data->peer_data[is_response], offset, ssh2_tree);
}
return offset;
}
static void
add_hid_to_strbuf(tvbuff_t *tvb, wmem_strbuf_t *hid_buf, guint8 offset)
{
int i;
for (i = 0; i < NWP_XID_LEN / NWP_XID_CHUNK_LEN; i++) {
wmem_strbuf_append_printf(hid_buf, "%08x",
tvb_get_ntohl(tvb, offset));
offset += NWP_XID_CHUNK_LEN;
}
}
static gint
add_message(tvbuff_t * tvb, gint offset, proto_tree * tree, wmem_strbuf_t * info)
{
guint16 descriptor_id, message_id;
gint data_len;
proto_item *msg;
proto_tree *msg_tree;
const gchar *descriptor;
descriptor_id = tvb_get_ntohs(tvb, offset);
message_id = tvb_get_ntohs(tvb, offset + 2);
data_len = tvb_get_ntohs(tvb, offset + 4) * 2;
/* Message subtree */
descriptor = val_to_str(descriptor_id, descriptors, "Unknown (%u)");
if (descriptor_id == ACK)
msg = proto_tree_add_none_format(tree,
hf_armagetronad_msg_subtree,
tvb, offset, data_len + 6,
"ACK %d messages",
data_len / 2);
else
msg = proto_tree_add_none_format(tree,
hf_armagetronad_msg_subtree,
tvb, offset, data_len + 6,
"Message 0x%04x [%s]",
message_id, descriptor);
msg_tree = proto_item_add_subtree(msg, ett_message);
/* DescriptorID field */
proto_tree_add_item(msg_tree, hf_armagetronad_descriptor_id, tvb,
offset, 2, ENC_BIG_ENDIAN);
if (info)
wmem_strbuf_append_printf(info, "%s, ", descriptor);
/* MessageID field */
proto_tree_add_item(msg_tree, hf_armagetronad_message_id, tvb,
offset + 2, 2, ENC_BIG_ENDIAN);
/* DataLen field */
proto_tree_add_item(msg_tree, hf_armagetronad_data_len, tvb,
offset + 4, 2, ENC_BIG_ENDIAN);
/* Data field */
add_message_data(tvb, offset + 6, data_len, msg_tree);
return data_len + 6;
}
static const gchar *
format_flags_string(guchar value, const gchar *array[])
{
int i;
guint bpos;
wmem_strbuf_t *buf;
const char *sep = "";
buf = wmem_strbuf_sized_new(wmem_packet_scope(), MAX_FLAGS_LEN, MAX_FLAGS_LEN);
for (i = 0; i < 8; i++) {
bpos = 1 << i;
if (value & bpos) {
if (array[i][0]) {
/* there is a string to emit... */
wmem_strbuf_append_printf(buf, "%s%s", sep,
array[i]);
sep = ", ";
}
}
}
return wmem_strbuf_get_str(buf);
}
static void
dissect_fw1(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
/* Set up structures needed to add the protocol subtree and manage it */
proto_item *ti;
proto_tree *volatile fh_tree = NULL;
char direction;
char chain;
char *interface_name;
guint32 iface_len = 10;
wmem_strbuf_t *header;
int i;
gboolean found;
static const char fw1_header[] = "FW1 Monitor";
ethertype_data_t ethertype_data;
header = wmem_strbuf_new_label(wmem_epan_scope());
wmem_strbuf_append(header, fw1_header);
/* Make entries in Protocol column and Info column on summary display */
col_set_str(pinfo->cinfo, COL_PROTOCOL, "FW1");
col_clear(pinfo->cinfo, COL_INFO);
/* g_snprintf(header, sizeof(header), fw1_header); */
/* fetch info to local variable */
direction = tvb_get_guint8(tvb, 0);
if (!fw1_iflist_with_chain)
chain = ' ';
else
chain = tvb_get_guint8(tvb, 1);
if (fw1_with_uuid)
iface_len = 6;
interface_name=(char *)wmem_alloc(wmem_packet_scope(), iface_len+1);
tvb_get_nstringz0(tvb, 2, iface_len+1, interface_name);
/* Known interface name - if not, remember it */
found=FALSE;
for (i=0; i<interface_anzahl; i++) {
if ( strcmp(p_interfaces[i], interface_name) == 0 ) {
found=TRUE;
break;
}
}
if (!found && interface_anzahl < MAX_INTERFACES) {
p_interfaces[interface_anzahl] = wmem_strdup(wmem_file_scope(), interface_name);
interface_anzahl++;
}
/* display all interfaces always in the same order */
for (i=0; i<interface_anzahl; i++) {
if ( strcmp(p_interfaces[i], interface_name) == 0 ) {
wmem_strbuf_append_printf(header, " %c%c %s %c%c",
direction == 'i' ? 'i' : (direction == 'O' ? 'O' : ' '),
(direction == 'i' || direction == 'O') ? chain : ' ',
p_interfaces[i],
direction == 'I' ? 'I' : (direction == 'o' ? 'o' : ' '),
(direction == 'I' || direction == 'o') ? chain : ' '
);
} else {
wmem_strbuf_append_printf(header, " %s ", p_interfaces[i]);
}
}
col_add_str(pinfo->cinfo, COL_IF_DIR, wmem_strbuf_get_str(header) + sizeof(fw1_header) + 1);
if (tree) {
if (!fw1_summary_in_tree)
/* Do not show the summary in Protocol Tree */
ti = proto_tree_add_protocol_format(tree, proto_fw1, tvb, 0, ETH_HEADER_SIZE, "%s", fw1_header);
else
ti = proto_tree_add_protocol_format(tree, proto_fw1, tvb, 0, ETH_HEADER_SIZE, "%s", wmem_strbuf_get_str(header));
/* create display subtree for the protocol */
fh_tree = proto_item_add_subtree(ti, ett_fw1);
proto_tree_add_item(fh_tree, hf_fw1_direction, tvb, 0, 1, ENC_ASCII|ENC_NA);
if (fw1_iflist_with_chain)
proto_tree_add_item(fh_tree, hf_fw1_chain, tvb, 1, 1, ENC_ASCII|ENC_NA);
proto_tree_add_item(fh_tree, hf_fw1_interface, tvb, 2, iface_len, ENC_ASCII|ENC_NA);
if (fw1_with_uuid)
proto_tree_add_item(fh_tree, hf_fw1_uuid, tvb, 8, 4, ENC_BIG_ENDIAN);
}
ethertype_data.etype = tvb_get_ntohs(tvb, 12);
ethertype_data.offset_after_ethertype = ETH_HEADER_SIZE;
ethertype_data.fh_tree = fh_tree;
ethertype_data.etype_id = hf_fw1_type;
ethertype_data.trailer_id = hf_fw1_trailer;
ethertype_data.fcs_len = 0;
call_dissector_with_data(ethertype_handle, tvb, pinfo, tree, ðertype_data);
}
static void
wmem_test_strbuf(void)
{
wmem_allocator_t *allocator;
wmem_strbuf_t *strbuf;
int i;
char *str;
allocator = wmem_allocator_new(WMEM_ALLOCATOR_STRICT);
strbuf = wmem_strbuf_new(allocator, "TEST");
g_assert(strbuf);
g_assert_cmpstr(wmem_strbuf_get_str(strbuf), ==, "TEST");
g_assert(wmem_strbuf_get_len(strbuf) == 4);
wmem_strbuf_append(strbuf, "FUZZ");
g_assert_cmpstr(wmem_strbuf_get_str(strbuf), ==, "TESTFUZZ");
g_assert(wmem_strbuf_get_len(strbuf) == 8);
wmem_strbuf_append_printf(strbuf, "%d%s", 3, "a");
g_assert_cmpstr(wmem_strbuf_get_str(strbuf), ==, "TESTFUZZ3a");
g_assert(wmem_strbuf_get_len(strbuf) == 10);
wmem_strbuf_append_c(strbuf, 'q');
g_assert_cmpstr(wmem_strbuf_get_str(strbuf), ==, "TESTFUZZ3aq");
g_assert(wmem_strbuf_get_len(strbuf) == 11);
wmem_strbuf_append_unichar(strbuf, g_utf8_get_char("\xC2\xA9"));
g_assert_cmpstr(wmem_strbuf_get_str(strbuf), ==, "TESTFUZZ3aq\xC2\xA9");
g_assert(wmem_strbuf_get_len(strbuf) == 13);
wmem_strbuf_truncate(strbuf, 32);
wmem_strbuf_truncate(strbuf, 24);
wmem_strbuf_truncate(strbuf, 16);
wmem_strbuf_truncate(strbuf, 13);
g_assert_cmpstr(wmem_strbuf_get_str(strbuf), ==, "TESTFUZZ3aq\xC2\xA9");
g_assert(wmem_strbuf_get_len(strbuf) == 13);
wmem_strbuf_truncate(strbuf, 3);
g_assert_cmpstr(wmem_strbuf_get_str(strbuf), ==, "TES");
g_assert(wmem_strbuf_get_len(strbuf) == 3);
strbuf = wmem_strbuf_sized_new(allocator, 10, 10);
g_assert(strbuf);
g_assert_cmpstr(wmem_strbuf_get_str(strbuf), ==, "");
g_assert(wmem_strbuf_get_len(strbuf) == 0);
wmem_strbuf_append(strbuf, "FUZZ");
g_assert_cmpstr(wmem_strbuf_get_str(strbuf), ==, "FUZZ");
g_assert(wmem_strbuf_get_len(strbuf) == 4);
wmem_strbuf_append_printf(strbuf, "%d%s", 3, "abcdefghijklmnop");
g_assert_cmpstr(wmem_strbuf_get_str(strbuf), ==, "FUZZ3abcd");
g_assert(wmem_strbuf_get_len(strbuf) == 9);
wmem_strbuf_append(strbuf, "abcdefghijklmnopqrstuvwxyz");
g_assert_cmpstr(wmem_strbuf_get_str(strbuf), ==, "FUZZ3abcd");
g_assert(wmem_strbuf_get_len(strbuf) == 9);
wmem_strbuf_append_c(strbuf, 'q');
g_assert_cmpstr(wmem_strbuf_get_str(strbuf), ==, "FUZZ3abcd");
g_assert(wmem_strbuf_get_len(strbuf) == 9);
wmem_strbuf_append_unichar(strbuf, g_utf8_get_char("\xC2\xA9"));
g_assert_cmpstr(wmem_strbuf_get_str(strbuf), ==, "FUZZ3abcd");
g_assert(wmem_strbuf_get_len(strbuf) == 9);
str = wmem_strbuf_finalize(strbuf);
g_assert_cmpstr(str, ==, "FUZZ3abcd");
g_assert(strlen(str) == 9);
wmem_free_all(allocator);
strbuf = wmem_strbuf_new(allocator, "TEST");
for (i=0; i<1024; i++) {
if (g_test_rand_bit()) {
wmem_strbuf_append(strbuf, "ABC");
}
else {
wmem_strbuf_append_printf(strbuf, "%d%d", 3, 777);
}
wmem_strict_check_canaries(allocator);
}
g_assert(strlen(wmem_strbuf_get_str(strbuf)) ==
wmem_strbuf_get_len(strbuf));
wmem_destroy_allocator(allocator);
}
static void
dissect_nstrace(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_tree *ns_tree = NULL, *flagtree = NULL;
proto_item *ti = NULL, *flagitem = NULL;
struct nstr_phdr *pnstr = &(pinfo->pseudo_header->nstr);
tvbuff_t *next_tvb_eth_client;
guint8 offset;
guint i, bpos;
wmem_strbuf_t *flags_strbuf = wmem_strbuf_new_label(wmem_packet_scope());
static const gchar *flags[] = {"FP", "FR", "DFD", "SRSS", "RSSH"};
gboolean first_flag = TRUE;
guint8 flagoffset, flagval;
guint8 src_vmname_len = 0, dst_vmname_len = 0;
guint8 variable_ns_len = 0;
guint flagval32;
wmem_strbuf_append(flags_strbuf, "None");
if (pnstr->rec_type == NSPR_HEADER_VERSION205)
{
src_vmname_len = tvb_get_guint8(tvb,pnstr->src_vmname_len_offset);
dst_vmname_len = tvb_get_guint8(tvb,pnstr->dst_vmname_len_offset);
variable_ns_len = src_vmname_len + dst_vmname_len;
pnstr->eth_offset += variable_ns_len;
}
ti = proto_tree_add_protocol_format(tree, proto_nstrace, tvb, 0, pnstr->eth_offset, "NetScaler Packet Trace");
ns_tree = proto_item_add_subtree(ti, ett_ns);
proto_tree_add_item(ns_tree, hf_ns_dir, tvb, pnstr->dir_offset, pnstr->dir_len, ENC_LITTLE_ENDIAN);
proto_tree_add_item(ns_tree, hf_ns_nicno, tvb, pnstr->nicno_offset, pnstr->nicno_len, ENC_LITTLE_ENDIAN);
switch (pnstr->rec_type)
{
case NSPR_HEADER_VERSION206:
flagoffset = pnstr->ns_activity_offset;
flagval32 = tvb_get_letohl(tvb, flagoffset);
flagitem = proto_tree_add_uint_format(ns_tree, hf_ns_activity, tvb, flagoffset, 4, flagval32,
"Activity Flags: 0x%04x", flagval32);
flagtree = proto_item_add_subtree(flagitem, ett_ns_activity_flags);
proto_tree_add_item(flagtree, hf_ns_activity_perf_collection, tvb, flagoffset, 4, ENC_LITTLE_ENDIAN);
proto_tree_add_item(flagtree, hf_ns_activity_pcb_zombie, tvb, flagoffset, 4, ENC_LITTLE_ENDIAN);
proto_tree_add_item(flagtree, hf_ns_activity_natpcb_zombie, tvb, flagoffset, 4, ENC_LITTLE_ENDIAN);
proto_tree_add_item(flagtree, hf_ns_activity_lbstats_sync, tvb, flagoffset, 4, ENC_LITTLE_ENDIAN);
proto_tree_add_item(flagtree, hf_ns_activity_stats_req, tvb, flagoffset, 4, ENC_LITTLE_ENDIAN);
case NSPR_HEADER_VERSION205:
if(src_vmname_len){
proto_tree_add_item(ns_tree,hf_ns_src_vm,tvb,pnstr->data_offset,src_vmname_len,ENC_LITTLE_ENDIAN);
}
if(dst_vmname_len){
proto_tree_add_item(ns_tree,hf_ns_dst_vm,tvb,pnstr->data_offset+src_vmname_len,dst_vmname_len,ENC_LITTLE_ENDIAN);
}
case NSPR_HEADER_VERSION204:
flagoffset = pnstr->clflags_offset;
flagval = tvb_get_guint8(tvb, flagoffset);
for (i = 0; i < 5; i++) {
bpos = 1 << i;
if (flagval & bpos) {
if (first_flag) {
wmem_strbuf_truncate(flags_strbuf, 0);
}
wmem_strbuf_append_printf(flags_strbuf, "%s%s", first_flag ? "" : ", ", flags[i]);
first_flag = FALSE;
}
}
proto_tree_add_item(ns_tree, hf_ns_snode, tvb, pnstr->srcnodeid_offset, 2, ENC_LITTLE_ENDIAN);
proto_tree_add_item(ns_tree, hf_ns_dnode, tvb, pnstr->destnodeid_offset, 2, ENC_LITTLE_ENDIAN);
flagitem = proto_tree_add_uint_format_value(ns_tree, hf_ns_clflags, tvb, flagoffset, 1, flagval,
"0x%02x (%s)", flagval, wmem_strbuf_get_str(flags_strbuf));
flagtree = proto_item_add_subtree(flagitem, ett_ns_flags);
proto_tree_add_boolean(flagtree, hf_ns_clflags_res, tvb, flagoffset, 1, flagval);
proto_tree_add_boolean(flagtree, hf_ns_clflags_rssh, tvb, flagoffset, 1, flagval);
proto_tree_add_boolean(flagtree, hf_ns_clflags_rss, tvb, flagoffset, 1, flagval);
proto_tree_add_boolean(flagtree, hf_ns_clflags_dfd, tvb, flagoffset, 1, flagval);
proto_tree_add_boolean(flagtree, hf_ns_clflags_fr, tvb, flagoffset, 1, flagval);
proto_tree_add_boolean(flagtree, hf_ns_clflags_fp, tvb, flagoffset, 1, flagval);
case NSPR_HEADER_VERSION203:
proto_tree_add_item(ns_tree, hf_ns_coreid, tvb, pnstr->coreid_offset, 2, ENC_LITTLE_ENDIAN);
/* fall through to next case */
case NSPR_HEADER_VERSION202:
col_add_fstr(pinfo->cinfo, COL_8021Q_VLAN_ID, "%d", tvb_get_letohs(tvb, pnstr->vlantag_offset));
proto_tree_add_item(ns_tree, hf_ns_vlantag, tvb, pnstr->vlantag_offset, 2, ENC_LITTLE_ENDIAN);
/* fall through to next case */
case NSPR_HEADER_VERSION201:
proto_tree_add_item(ns_tree, hf_ns_pcbdevno, tvb, pnstr->pcb_offset, 4, ENC_LITTLE_ENDIAN);
ti = proto_tree_add_item(ns_tree, hf_ns_devno, tvb, pnstr->pcb_offset, 4, ENC_LITTLE_ENDIAN);
PROTO_ITEM_SET_HIDDEN(ti);
proto_tree_add_item(ns_tree, hf_ns_l_pcbdevno, tvb, pnstr->l_pcb_offset, 4, ENC_LITTLE_ENDIAN);
ti = proto_tree_add_item(ns_tree, hf_ns_devno, tvb, pnstr->l_pcb_offset, 4, ENC_LITTLE_ENDIAN);
PROTO_ITEM_SET_HIDDEN(ti);
break;
default:
break;
}
/* Dissect as Ethernet */
offset = pnstr->eth_offset;
next_tvb_eth_client = tvb_new_subset_remaining(tvb, offset);
call_dissector(eth_withoutfcs_handle, next_tvb_eth_client, pinfo, tree);
}
