egrath Posted June 20, 2005 Share Posted June 20, 2005 Hi,i currently try to write to a other's process standard input. I am using the OpenProcess Function and then the DuplicateHandle Function to get the Handle of the other's stdin.Below is my non-working code:#include <stdio.h>#include <stdlib.h>#include <windows.h>int main( int argc, char* argv[] ){ HANDLE hProcess, hMyProcess; HANDLE hInput; unsigned int nProcess; if( argc != 2 ) { fprintf( stderr, "illegal arg count\n" ); exit( -1 ); } else { nProcess = atoi( argv[1] ); } fprintf( stdout, "Attaching pro Process %d ... ", nProcess ); if(( hProcess = OpenProcess( PROCESS_ALL_ACCESS, TRUE, ( DWORD ) nProcess )) != NULL ) { fprintf( stdout, "OK\n" ); } else { fprintf( stdout, "FAILED\n" ); exit( -1 ); } hMyProcess = GetCurrentProcess(); fprintf( stdout, "Trying to get STDIN Handle from Process ... " ); if( ! DuplicateHandle( hProcess, GetStdHandle( STD_INPUT_HANDLE ), hMyProcess, &hInput, 0, TRUE, DUPLICATE_SAME_ACCESS )) { fprintf( stdout, "FAILED\n" ); fprintf( stdout, "%08X\n", GetLastError()); exit( -1 ); } else { fprintf( stdout, "OK\n" ); } CloseHandle( hInput ); return 0;}Does anyone see why this doesn't work? Do i have any logical errors?Thanks, Egon Link to comment Share on other sites More sharing options...
egrath Posted June 27, 2005 Author Share Posted June 27, 2005 Hi,found out that it's impossible to connect to another's process stdin/stdout/stderr Handle when you are not the father of that process. It's a security thing.Egon Link to comment Share on other sites More sharing options...
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