/*
* print packet payload data (avoid printing binary data)
*/
void
SNIFFER::print_payload(const u_char *payload, int len)
{
int len_rem = len;
int line_width = 16;
int line_len;
int offset = 0;
const u_char *ch = payload;
if (len <= 0)
return;
if (len <= line_width) {
print_hex_ascii_line(ch, len, offset);
return;
}
for ( ;; ) {
line_len = line_width % len_rem;
print_hex_ascii_line(ch, line_len, offset);
len_rem = len_rem - line_len;
ch = ch + line_len;
offset = offset + line_width;
if (len_rem <= line_width) {
print_hex_ascii_line(ch, len_rem, offset);
break;
}
}
return;
}
/*
* 打印包的有效载荷数据（避免打印二进制数据）
* print packet payload data (avoid printing binary data)
*/
void
print_payload(const u_char *payload, int len)
{
int len_rem = len;
int line_width = 16; /* 每行的字节数 | number of bytes per line */
int line_len;
int offset = 0; /* 从0开始的偏移计数器 | zero-based offset counter */
const u_char *ch = payload;
if (len <= 0)
return;
/* data fits on one line */
if (len <= line_width) {
print_hex_ascii_line(ch, len, offset);
return;
}
/* 数据跨越多行 data spans multiple lines */
for ( ;; ) {
/* 计算当前行的长度 | compute current line length */
line_len = line_width % len_rem;
/* 显示分割线 | print line */
print_hex_ascii_line(ch, line_len, offset);
/* 计算总剩余 | compute total remaining */
len_rem = len_rem - line_len;
/* 转移到打印的剩余字节的指针
shift pointer to remaining bytes to print */
ch = ch + line_len;
/* 添加偏移 | add offset */
offset = offset + line_width;
/* 检查是否有线宽字符或更少
check if we have line width chars or less */
if (len_rem <= line_width) {
/* print last line and get out */
print_hex_ascii_line(ch, len_rem, offset);
break;
}
}
return;
}
void
print_frame(const u_char *payload, int len)
{
PRINT_DEBUG("passed len = %d", len);
int len_rem = len;
int line_width = 16; /* number of bytes per line */
int line_len;
int offset = 0; /* zero-based offset counter */
const u_char *ch = payload;
if (len <= 0)
return;
/* data fits on one line */
if (len <= line_width) {
PRINT_DEBUG("calling hex_ascii_line");
print_hex_ascii_line(ch, len, offset);
return;
}
/* data spans multiple lines */
for ( ;; ) {
/* compute current line length */
line_len = line_width % len_rem;
/* print line */
print_hex_ascii_line(ch, line_len, offset);
/* compute total remaining */
len_rem = len_rem - line_len;
/* shift pointer to remaining bytes to print */
ch = ch + line_len;
/* add offset */
offset = offset + line_width;
/* check if we have line width chars or less */
if (len_rem <= line_width) {
/* print last line and get out */
print_hex_ascii_line(ch, len_rem, offset);
break;
}
}
return;
} // end of print_frame
/*
* print packet payload data (avoid printing binary data)
*/
void print_payload(const u_char *payload, int len)
{
const u_char *ch = payload;
int len_rem = len;
int line_len;
int offset = 0; /* zero-based offset counter */
int line_width = 16; /* number of bytes per line */
if (len < 1)
return;
/* data fits on one line */
if (len < line_width+1) {
print_hex_ascii_line(ch, len, offset);
return;
}
/* data spans multiple lines */
while(1) {
/* compute current line length */
line_len = line_width % len_rem;
/* print line */
print_hex_ascii_line(ch, line_len, offset);
/* compute total remaining */
len_rem = len_rem - line_len;
/* shift pointer to remaining bytes to print */
ch = ch + line_len;
/* add offset */
offset = offset + line_width;
/* check if we have line width chars or less */
if (len_rem < line_width+1) {
/* print last line and get out */
print_hex_ascii_line(ch, len_rem, offset);
break;
}
}
return;
}
void print_payload(const u_char *payload, int len)
{
int len_rem = len;
int line_width = 16;
int line_len;
int offset = 0;
const u_char *ch = payload;
if (len <= 0)
return;
/* data fits on one line */
if (len <= line_width) {
print_hex_ascii_line(ch, len, offset);
return;
}
/* data spans multiple lines */
for ( ;; ) {
/* compute current line length */
line_len = line_width % len_rem;
/* print line */
print_hex_ascii_line(ch, line_len, offset);
/* compute total remaining */
len_rem = len_rem - line_len;
/* shift pointer to remaining bytes to print */
ch = ch + line_len;
/* add offset */
offset = offset + line_width;
/* check if we have line width chars or less */
if (len_rem <= line_width) {
/* print last line and get out */
print_hex_ascii_line(ch, len_rem, offset);
break;
}
}
}
static void print_payload(const unsigned char *payload, int len)
{
int len_remain = len;
int line_width = 16;
int offset = 0;
const unsigned char *line_start = payload;
if (len <= 0)
{
return;
}
printf("---------------------- Payload ------------------------\n");
while (len_remain > line_width)
{
print_hex_ascii_line(line_start, line_width, offset);
len_remain = len_remain - line_width;
line_start = line_start + line_width;
offset = offset + line_width;
}
print_hex_ascii_line(line_start, len_remain, offset);
}
