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ONME-3733 detect xinetd service pattern and generate correct pattern

pull/8775/head
Marcin Tomczyk 2018-11-05 10:49:59 +01:00 committed by adbridge
parent 3d28f7f125
commit 571f0e016b
2 changed files with 33 additions and 14 deletions
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18
TESTS/netsocket/tcp/tcpsocket_recv_100k.cpp
View File

@ -58,15 +58,19 @@ static nsapi_error_t _tcpsocket_connect_to_chargen_srv(TCPSocket &sock)
* \param offset Start pattern from offset
* \param len Length of pattern to generate.
*/
static void generate_RFC_864_pattern(size_t offset, uint8_t *buf, size_t len)
static void generate_RFC_864_pattern(size_t offset, uint8_t *buf, size_t len, bool is_xinetd)
{
const int row_size = 74; // Number of chars in single row
const int row_count = 95; // Number of rows in pattern after which pattern start from beginning
const int chars_scope = is_xinetd ? 93 : 95; // Number of chars from ASCII table used in pattern
const char first_char = is_xinetd ? '!' : ' '; // First char from ASCII table used in pattern
while (len--) {
if (offset % 74 == 72) {
if (offset % row_size == (row_size - 2)) {
*buf++ = '\r';
} else if (offset % 74 == 73) {
} else if (offset % row_size == (row_size - 1)) {
*buf++ = '\n';
} else {
*buf++ = ' ' + (offset % 74 + offset / 74) % 95 ;
*buf++ = first_char + (offset % row_size + ((offset / row_size) % row_count)) % chars_scope;
}
offset++;
}
@ -74,10 +78,14 @@ static void generate_RFC_864_pattern(size_t offset, uint8_t *buf, size_t len)
static void check_RFC_864_pattern(void *rx_buff, const size_t len, const size_t offset)
{
static bool is_xinetd = false;
void *ref_buff = malloc(len);
TEST_ASSERT_NOT_NULL(ref_buff);
generate_RFC_864_pattern(offset, (uint8_t *)ref_buff, len);
if (offset == 0) {
is_xinetd = ((uint8_t *)rx_buff)[0] == '!';
}
generate_RFC_864_pattern(offset, (uint8_t *)ref_buff, len, is_xinetd);
bool match = memcmp(ref_buff, rx_buff, len) == 0;
free(ref_buff);

21
TEST_APPS/device/socket_app/cmd_socket.cpp
View File

@ -408,15 +408,19 @@ static void print_data_as_hex(const uint8_t *buf, int len, int col_width);
* \param offset Start pattern from offset
* \param len Length of pattern to generate.
*/
static void generate_RFC_864_pattern(size_t offset, uint8_t *buf, size_t len)
static void generate_RFC_864_pattern(size_t offset, uint8_t *buf, size_t len, bool is_xinetd)
{
const int row_size = 74; // Number of chars in single row
const int row_count = 95; // Number of rows in pattern after which pattern start from beginning
const int chars_scope = is_xinetd ? 93 : 95; // Number of chars from ASCII table used in pattern
const char first_char = is_xinetd ? '!' : ' '; // First char from ASCII table used in pattern
while (len--) {
if (offset % 74 == 72) {
if (offset % row_size == (row_size - 2)) {
*buf++ = '\r';
} else if (offset % 74 == 73) {
} else if (offset % row_size == (row_size - 1)) {
*buf++ = '\n';
} else {
*buf++ = ' ' + (offset % 74 + offset / 74) % 95 ;
*buf++ = first_char + (offset % row_size + ((offset / row_size) % row_count)) % chars_scope;
}
offset++;
}
@ -424,6 +428,7 @@ static void generate_RFC_864_pattern(size_t offset, uint8_t *buf, size_t len)
bool SInfo::check_pattern(void *buffer, size_t len)
{
static bool is_xinetd = false;
if (!_check_pattern) {
return true;
}
@ -431,8 +436,14 @@ bool SInfo::check_pattern(void *buffer, size_t len)
if (!buf) {
return false;
}
size_t offset = _receivedTotal;
generate_RFC_864_pattern(offset, (uint8_t *)buf, len);
if (offset == 0) {
is_xinetd = ((uint8_t *)buffer)[0] == '!';
}
generate_RFC_864_pattern(offset, (uint8_t *)buf, len, is_xinetd);
bool match = memcmp(buf, buffer, len) == 0;
if (!match) {
cmd_printf("Pattern check failed\r\nWAS:%.*s\r\nREF:%.*s\r\n", len, (char *)buffer, len, (char *)buf);