- 1 year ago
How to call tshark to convert a capture file to txt with CreateProcess
To call tshark to convert a capture file to text (txt) using the CreateProcess
function in C++, you can follow these steps:
Include the necessary headers:
cpp#include <windows.h>
Define the command-line arguments for tshark:
cppconst char* commandLine = "tshark -r input.pcap -T fields -e frame.number -e frame.time -e ip.src -e ip.dst > output.txt";
Create a PROCESS_INFORMATION structure to hold process information:
cppPROCESS_INFORMATION processInfo;
ZeroMemory(&processInfo, sizeof(PROCESS_INFORMATION));
Create a STARTUPINFO structure to configure the process startup:
cppSTARTUPINFO startupInfo;
ZeroMemory(&startupInfo, sizeof(STARTUPINFO));
startupInfo.cb = sizeof(STARTUPINFO);
Call the
CreateProcess
function to execute the tshark command:cppif (!CreateProcess(NULL, const_cast<char*>(commandLine), NULL, NULL, FALSE, 0, NULL, NULL, &startupInfo, &processInfo))
{
// Error handling
}
Wait for the process to complete:
cppWaitForSingleObject(processInfo.hProcess, INFINITE);
Close the process and thread handles:
cppCloseHandle(processInfo.hProcess);
CloseHandle(processInfo.hThread);
This code snippet assumes that tshark is already installed and available in the system's PATH environment variable. Adjust the commandLine
string as needed to specify the appropriate input file (replace input.pcap
) and output file (replace output.txt
).
Remember to handle any potential errors that may occur during the CreateProcess
call or subsequent operations.
Please note that using the CreateProcess
function requires understanding of Windows API and error handling. Make sure to consult the official Microsoft documentation for detailed information on using CreateProcess
: https://docs.microsoft.com/en-us/windows/win32/api/processthreadsapi/nf-processthreadsapi-createprocessa