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Added a Named Pipe to MS/TP Capture utility so that Wireshark can capture MS/TP packets in realtime using the named pipe as the interface name. Thank you Lori!

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This commit is contained in:
skarg
2009-10-14 21:15:10 +00:00
parent 8130a50817
commit deba2aab3e
3 changed files with 71 additions and 19 deletions
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bacnet-stack/demo/mstpcap/main.c
+66 -17
View File
@@ -285,6 +285,44 @@ uint16_t MSTP_Get_Reply(
static char Capture_Filename[32] = "mstp_20090123091200.cap";
static FILE *pFile = NULL; /* stream pointer */
static HANDLE hPipe = NULL; /* pipe handle */
#if defined(_WIN32)
static void named_pipe_create(char *name)
{
fprintf(stdout, "mstpcap: Creating Named Pipe \"%s\"\n", name);
hPipe = CreateNamedPipe(
name,
PIPE_ACCESS_OUTBOUND,
PIPE_TYPE_MESSAGE | PIPE_WAIT,
1, 65536, 65536,
300,
NULL);
if (hPipe == INVALID_HANDLE_VALUE) {
RS485_Print_Error();
return;
}
ConnectNamedPipe(hPipe, NULL);
}
size_t data_write(const void *ptr, size_t size, size_t nitems)
{
DWORD cbWritten = 0;
(void)WriteFile(
hPipe, // handle to pipe
ptr, // buffer to write from
size*nitems, // number of bytes to write
&cbWritten, // number of bytes written
NULL); // not overlapped I/O
return fwrite(ptr, size, nitems, pFile);
}
#else
size_t data_write(const void *ptr, size_t size, size_t nitems)
{
return fwrite(ptr, size, nitems, pFile);
}
#endif
static void filename_create(
char *filename)
@@ -316,13 +354,13 @@ static void write_global_header(
/* create a new file. */
pFile = fopen(filename, "wb");
if (pFile) {
(void) fwrite(&magic_number, sizeof(magic_number), 1, pFile);
(void) fwrite(&version_major, sizeof(version_major), 1, pFile);
(void) fwrite(&version_minor, sizeof(version_minor), 1, pFile);
(void) fwrite(&thiszone, sizeof(thiszone), 1, pFile);
(void) fwrite(&sigfigs, sizeof(sigfigs), 1, pFile);
(void) fwrite(&snaplen, sizeof(snaplen), 1, pFile);
(void) fwrite(&network, sizeof(network), 1, pFile);
(void) data_write(&magic_number, sizeof(magic_number), 1);
(void) data_write(&version_major, sizeof(version_major), 1);
(void) data_write(&version_minor, sizeof(version_minor), 1);
(void) data_write(&thiszone, sizeof(thiszone), 1);
(void) data_write(&sigfigs, sizeof(sigfigs), 1);
(void) data_write(&snaplen, sizeof(snaplen), 1);
(void) data_write(&network, sizeof(network), 1);
fflush(pFile);
fprintf(stdout, "mstpcap: saving capture to %s\n", filename);
} else {
@@ -347,16 +385,16 @@ static void write_received_packet(
ts_sec = tv.tv_sec;
ts_usec = tv.tv_usec;
packet_statistics(&tv, mstp_port);
(void) fwrite(&ts_sec, sizeof(ts_sec), 1, pFile);
(void) fwrite(&ts_usec, sizeof(ts_usec), 1, pFile);
(void) data_write(&ts_sec, sizeof(ts_sec), 1);
(void) data_write(&ts_usec, sizeof(ts_usec), 1);
if (mstp_port->DataLength) {
max_data = min(mstp_port->InputBufferSize, mstp_port->DataLength);
incl_len = orig_len = 8 + max_data + 2;
} else {
incl_len = orig_len = 8;
}
(void) fwrite(&incl_len, sizeof(incl_len), 1, pFile);
(void) fwrite(&orig_len, sizeof(orig_len), 1, pFile);
(void) data_write(&incl_len, sizeof(incl_len), 1);
(void) data_write(&orig_len, sizeof(orig_len), 1);
header[0] = 0x55;
header[1] = 0xFF;
header[2] = mstp_port->FrameType;
@@ -365,11 +403,11 @@ static void write_received_packet(
header[5] = HI_BYTE(mstp_port->DataLength);
header[6] = LO_BYTE(mstp_port->DataLength);
header[7] = mstp_port->HeaderCRCActual;
(void) fwrite(header, sizeof(header), 1, pFile);
(void) data_write(header, sizeof(header), 1);
if (mstp_port->DataLength) {
(void) fwrite(mstp_port->InputBuffer, max_data, 1, pFile);
(void) fwrite((char *) &mstp_port->DataCRCActualMSB, 1, 1, pFile);
(void) fwrite((char *) &mstp_port->DataCRCActualLSB, 1, 1, pFile);
(void) data_write(mstp_port->InputBuffer, max_data, 1);
(void) data_write((char *) &mstp_port->DataCRCActualMSB, 1, 1);
(void) data_write((char *) &mstp_port->DataCRCActualLSB, 1, 1);
}
} else {
fprintf(stderr, "mstpcap: failed to open %s: %s\n", Capture_Filename,
@@ -393,6 +431,12 @@ static BOOL WINAPI CtrlCHandler(
DWORD dwCtrlType)
{
dwCtrlType = dwCtrlType;
if (hPipe) {
FlushFileBuffers(hPipe);
DisconnectNamedPipe(hPipe);
CloseHandle(hPipe);
}
exit(0);
return TRUE;
}
@@ -437,7 +481,7 @@ int main(
mstp_port = &MSTP_Port;
/* initialize our interface */
if ((argc > 1) && (strcmp(argv[1], "--help") == 0)) {
printf("mstpcap [interface] [baud]\r\n"
printf("mstpcap [interface] [baud] [named pipe]\r\n"
"Captures MS/TP packets from a serial interface\r\n"
"and save them to a file. Saves packets in a\r\n"
"filename mstp_20090123091200.cap that has data and time.\r\n"
@@ -445,7 +489,9 @@ int main(
"Command line options:\r\n" "[interface] - serial interface.\r\n"
" defaults to COM4 on Windows, and /dev/ttyUSB0 on linux.\r\n"
"[baud] - baud rate. 9600, 19200, 38400, 57600, 115200\r\n"
" defaults to 38400.\r\n" "");
" defaults to 38400.\r\n"
"[named pipe] - use \\\\.\\pipe\\wireshark as the name\r\n"
" and set that name as the interface name in Wireshark\r\n");
return 0;
}
if (argc > 1) {
@@ -473,6 +519,9 @@ int main(
#if defined(_WIN32)
SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), ENABLE_PROCESSED_INPUT);
SetConsoleCtrlHandler((PHANDLER_ROUTINE) CtrlCHandler, TRUE);
if (argc > 3) {
named_pipe_create(argv[3]);
}
#else
signal_init();
#endif
bacnet-stack/ports/win32/rs485.c
+3 -2
View File
@@ -113,12 +113,13 @@ const char *RS485_Interface(
return RS485_Port_Name;
}
static void RS485_Print_Error(
void RS485_Print_Error(
void)
{
LPVOID lpMsgBuf;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), /* Default language */
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
NULL, GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) & lpMsgBuf, 0, NULL);
MessageBox(NULL, lpMsgBuf, "GetLastError", MB_OK | MB_ICONINFORMATION);
LocalFree(lpMsgBuf);
bacnet-stack/ports/win32/rs485.h
+2
View File
@@ -64,6 +64,8 @@ extern "C" {
void);
bool RS485_Set_Baud_Rate(
uint32_t baud);
void RS485_Print_Error(void);
#ifdef __cplusplus
}