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tvb_reported_length_remaining() can return -1; 

Remove a few lines of not really req'd code;
Minor whitespace cleanup.

svn path=/trunk/; revision=37744
This commit is contained in:
Bill Meier 2011-06-22 04:20:46 +00:00
parent 19bc84f3b0
commit 83b642557a
1 changed files with 33 additions and 39 deletions
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72
epan/dissectors/packet-dvbci.c
View File

@ -196,7 +196,7 @@
/* used for answer_text_length, choice_nb and item_nb */
#define NB_UNKNOWN 0xFF
/* character tables, DVB-SI spec annex A.2 */
#define CHAR_TBL_8859_5 0x01
#define CHAR_TBL_8859_6 0x02
@ -315,7 +315,7 @@ static const apdu_info_t apdu_info[] = {
{T_REPLACE, 0, 5, DATA_CAM_TO_HOST, dissect_dvbci_payload_hc},
{T_CLEAR_REPLACE, 0, 1, DATA_CAM_TO_HOST, dissect_dvbci_payload_hc},
{T_ASK_RELEASE, 0, 0, DATA_HOST_TO_CAM, NULL},
{T_DATE_TIME_ENQ, 0, 1, DATA_CAM_TO_HOST, dissect_dvbci_payload_dt},
{T_DATE_TIME, 5, LEN_FIELD_ANY, DATA_HOST_TO_CAM, dissect_dvbci_payload_dt},
@ -324,10 +324,10 @@ static const apdu_info_t apdu_info[] = {
{T_DISPLAY_REPLY, 1, LEN_FIELD_ANY, DATA_HOST_TO_CAM, dissect_dvbci_payload_mmi},
{T_ENQ, 2, LEN_FIELD_ANY, DATA_CAM_TO_HOST, dissect_dvbci_payload_mmi},
{T_ANSW, 1, LEN_FIELD_ANY, DATA_HOST_TO_CAM, dissect_dvbci_payload_mmi},
{T_MENU_LAST, 13, LEN_FIELD_ANY, DATA_CAM_TO_HOST, dissect_dvbci_payload_mmi},
{T_MENU_LAST, 13, LEN_FIELD_ANY, DATA_CAM_TO_HOST, dissect_dvbci_payload_mmi},
{T_MENU_MORE, 13, LEN_FIELD_ANY, DATA_CAM_TO_HOST, dissect_dvbci_payload_mmi},
{T_MENU_ANSW, 0, 1, DATA_HOST_TO_CAM, dissect_dvbci_payload_mmi},
{T_LIST_LAST, 13, LEN_FIELD_ANY, DATA_CAM_TO_HOST, dissect_dvbci_payload_mmi},
{T_LIST_LAST, 13, LEN_FIELD_ANY, DATA_CAM_TO_HOST, dissect_dvbci_payload_mmi},
{T_LIST_MORE, 13, LEN_FIELD_ANY, DATA_CAM_TO_HOST, dissect_dvbci_payload_mmi},
};
@ -367,9 +367,6 @@ static const value_string dvbci_apdu_tag[] = {
#define BCD44_TO_DEC(x) (((x&0xf0) >> 4) * 10 + (x&0x0f))
void proto_reg_handoff_dvbci(void);
static int proto_dvbci = -1;
static gint ett_dvbci = -1;
@ -637,7 +634,7 @@ static const value_string dvbci_ans_id[] = {
};
static guint16 buf_size_cam; /* buffer size proposal by the CAM */
@ -649,7 +646,7 @@ static guint16 buf_size_host;
static inline gint16 two_comp_to_int16(guint16 x)
{
return (x&0x8000) ? -~(x-1) : x;
}
}
/* initialize/reset per capture state data */
@ -706,10 +703,10 @@ dissect_si_string(tvbuff_t *tvb, gint offset, gint str_len,
proto_tree_add_text(tree, tvb, offset, str_len, "%s: %s", title, si_str);
if (show_col_info)
col_append_sep_fstr(pinfo->cinfo, COL_INFO, " ", "%s", si_str);
col_append_sep_fstr(pinfo->cinfo, COL_INFO, " ", "%s", si_str);
}
/* dissect a ca descriptor in the ca_pmt */
static gint
dissect_ca_desc(tvbuff_t *tvb, gint offset, packet_info *pinfo,
@ -894,27 +891,27 @@ dissect_dvbci_payload_rm(guint32 tag, gint len_field,
tvbuff_t *tvb, gint offset, packet_info *pinfo,
proto_tree *tree)
{
const gchar *tag_str;
proto_item *pi;
guint32 res_id;
const gchar *tag_str;
proto_item *pi;
guint32 res_id;
if (tag==T_PROFILE) {
if (len_field % RES_ID_LEN) {
tag_str = val_to_str(tag, dvbci_apdu_tag, "Unknown: %d");
pi = proto_tree_add_text(tree, tvb, 0, APDU_TAG_SIZE,
if (tag==T_PROFILE) {
if (len_field % RES_ID_LEN) {
tag_str = val_to_str(tag, dvbci_apdu_tag, "Unknown: %d");
pi = proto_tree_add_text(tree, tvb, 0, APDU_TAG_SIZE,
"Invalid APDU length field");
expert_add_info_format(pinfo, pi, PI_MALFORMED, PI_ERROR,
expert_add_info_format(pinfo, pi, PI_MALFORMED, PI_ERROR,
"Length field for %s must be a multiple of 4 bytes",
tag_str);
return;
}
return;
}
while (tvb_reported_length_remaining(tvb, offset) != 0) {
res_id = tvb_get_ntohl(tvb, offset);
dissect_dvbci_res_id(tvb, offset, pinfo, tree, res_id, FALSE);
offset += RES_ID_LEN;
}
}
while (tvb_reported_length_remaining(tvb, offset) > 0) {
res_id = tvb_get_ntohl(tvb, offset);
dissect_dvbci_res_id(tvb, offset, pinfo, tree, res_id, FALSE);
offset += RES_ID_LEN;
}
}
}
static void
@ -977,7 +974,7 @@ dissect_dvbci_payload_ca(guint32 tag, gint len_field,
return;
}
while (tvb_reported_length_remaining(tvb, offset) != 0) {
while (tvb_reported_length_remaining(tvb, offset) > 0) {
proto_tree_add_item(
tree, hf_dvbci_ca_sys_id, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
@ -994,7 +991,7 @@ dissect_dvbci_payload_ca(guint32 tag, gint len_field,
tree, hf_dvbci_prog_num, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
byte = tvb_get_guint8(tvb,offset);
proto_tree_add_text(tree, tvb, offset, 1,
proto_tree_add_text(tree, tvb, offset, 1,
"Version number: 0x%x, Current-next indicator: 0x%x",
(byte&0x3E) >> 1, byte&0x01);
offset++;
@ -1080,7 +1077,7 @@ dissect_dvbci_payload_hc(guint32 tag, gint len_field _U_,
tree, hf_dvbci_replacement_pid, tvb, offset, 2, ENC_BIG_ENDIAN);
col_append_sep_fstr(pinfo->cinfo, COL_INFO, ": ",
"ref 0x%x, 0x%x -> 0x%x", ref, old_pid, new_pid);
}
}
else if (tag==T_CLEAR_REPLACE) {
ref = tvb_get_guint8(tvb, offset);
proto_tree_add_item(
@ -1244,9 +1241,9 @@ dissect_dvbci_payload_mmi(guint32 tag, gint len_field,
proto_tree_add_item(tree, hf_dvbci_mmi_mode,
tvb, offset, 1, ENC_NA);
}
else if (disp_rep_id == DISP_REP_ID_DISP_CHAR_TBL ||
else if (disp_rep_id == DISP_REP_ID_DISP_CHAR_TBL ||
disp_rep_id == DISP_REP_ID_DISP_CHAR_TBL) {
while (tvb_reported_length_remaining(tvb, offset) != 0) {
while (tvb_reported_length_remaining(tvb, offset) > 0) {
proto_tree_add_item(tree, hf_dvbci_char_tbl,
tvb, offset, 1, ENC_NA);
offset++;
@ -1308,7 +1305,7 @@ dissect_dvbci_payload_mmi(guint32 tag, gint len_field,
offset += text_len;
text_len = dissect_dvbci_text("Bottom line", tvb, offset, pinfo, tree);
offset += text_len;
while (tvb_reported_length_remaining(tvb, offset)) {
while (tvb_reported_length_remaining(tvb, offset) > 0) {
text_len = dissect_dvbci_text("Item", tvb, offset, pinfo, tree);
/* minimum is apdu tag + 1 byte len field */
if (text_len<APDU_TAG_SIZE+1) {
@ -1957,13 +1954,13 @@ dissect_dvbci_cis(tvbuff_t *tvb, gint offset,
}
}
offset += tpl_len;
} while (tvb_reported_length_remaining(tvb, offset) && tpl_code!=CISTPL_END);
} while ((tvb_reported_length_remaining(tvb, offset) > 0) && (tpl_code != CISTPL_END));
if (ti_main)
proto_item_set_len(ti_main, offset-offset_start);
}
static int
dissect_dvbci(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
@ -2260,16 +2257,13 @@ proto_register_dvbci(void)
};
spdu_table = g_hash_table_new(g_direct_hash, g_direct_equal);
if (!spdu_table)
return;
for(i=0; i<array_length(spdu_info); i++) {
g_hash_table_insert(spdu_table,
GUINT_TO_POINTER((guint)spdu_info[i].tag),
(gpointer)(&spdu_info[i]));
}
apdu_table = g_hash_table_new(g_direct_hash, g_direct_equal);
if (!apdu_table)
return;
for(i=0; i<array_length(apdu_info); i++) {
g_hash_table_insert(apdu_table,
GUINT_TO_POINTER((guint)apdu_info[i].tag),