static HANDLE WinCreateProcess(PCHAR command, HANDLE in, HANDLE out, HANDLE err)
{
STARTUPINFO si;
PROCESS_INFORMATION pi;
BOOL bRes;
ZeroMemory(&si, sizeof(si));
si.cb = sizeof(si);
ZeroMemory(&pi, sizeof(pi));
RedirectHandle(&si, in, out, err);
if (!strcmp(command, "exit") || !strcmp(command, "quit"))
exit(EXIT_SUCCESS);
bRes = CreateProcess(NULL, command, NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi);
if (!bRes) {
int written = 0;
if (err != INVALID_HANDLE_VALUE) {
WriteFile(err, command , strlen(command), &written, NULL);
WriteFile(err, ERR_MSG, strlen(ERR_MSG), &written, NULL);
}
else
fprintf(stderr, "Execution failed for '%s'\n", command);
return INVALID_HANDLE_VALUE;
}
CloseHandle(pi.hThread);
return pi.hProcess;
}
VOID redirrect_command(simple_command_t *s, STARTUPINFO *siStartupInfo, HANDLE *hInFile, HANDLE *hOutFile, HANDLE *hErrFile)
{
InitStdHandles(siStartupInfo);
if(s->in){
*hInFile = FileOpen((LPCSTR)get_word(s->in), "r");
RedirectHandle(siStartupInfo, *hInFile, STD_INPUT_HANDLE);
}
if(s->out && s->err){
if(strcmp(get_word(s->out), get_word(s->err)) == 0){
DeleteFile((LPCSTR)get_word(s->out));
*hOutFile = FileOpen((LPCSTR)get_word(s->out), "a");
RedirectHandle(siStartupInfo, *hOutFile, STD_OUTPUT_HANDLE);
RedirectHandle(siStartupInfo, *hOutFile, STD_ERROR_HANDLE);
return;
}
}
if(s->out){
if(s->io_flags & IO_OUT_APPEND){
*hOutFile = FileOpen((LPCSTR)get_word(s->out), "a");
}
else{
*hOutFile = FileOpen((LPCSTR)get_word(s->out), "w");
}
RedirectHandle(siStartupInfo, *hOutFile, STD_OUTPUT_HANDLE);
}
if(s->err){
if(s->io_flags & IO_ERR_APPEND){
*hErrFile = FileOpen((LPCSTR)get_word(s->err), "a");
}
else{
*hErrFile = FileOpen((LPCSTR)get_word(s->err), "w");
}
RedirectHandle(siStartupInfo, *hErrFile, STD_ERROR_HANDLE);
}
}
/**
* Run commands by creating an annonymous pipe (cmd1 | cmd2)
*/
static bool do_on_pipe(command_t *s, int level, command_t *father, simple_command_t *queue[100], unsigned int *queue_len)
{
SECURITY_ATTRIBUTES sa;
STARTUPINFO siStartupInfo;
PROCESS_INFORMATION piProcessInfo;
HANDLE hOutFile = INVALID_HANDLE_VALUE;
HANDLE hInFile = INVALID_HANDLE_VALUE;
HANDLE hErrFile = INVALID_HANDLE_VALUE;
BOOL changed = FALSE;
unsigned int i;
HANDLE fdes[30][2];
if(!s)
return true;
if(s->scmd){
queue[*queue_len] = s->scmd;
(*queue_len)++;
return true;
}
if(s->cmd1 != NULL){
do_on_pipe(s->cmd1, level+1, s, queue, queue_len);
}
if(s->cmd2 != NULL){
do_on_pipe(s->cmd2, level+1, s, queue, queue_len);
}
if(s->up == NULL || s->up->op != OP_PIPE){
//initializare atribute securitate
ZeroMemory(&sa, sizeof(SECURITY_ATTRIBUTES));
sa.nLength = sizeof(SECURITY_ATTRIBUTES);
sa.bInheritHandle = TRUE;
ZeroMemory(&siStartupInfo, sizeof(siStartupInfo));
ZeroMemory(&piProcessInfo, sizeof(piProcessInfo));
siStartupInfo.cb = sizeof(siStartupInfo);
//creare n-1 pipe-uri
for(i = 0; i < (*queue_len) - 1 ; i++){
changed = CreatePipe(&fdes[i][0], &fdes[i][1], &sa, 11* 1024 *1024);
}
redirrect_command(queue[0], &siStartupInfo, &hInFile, &hOutFile, &hErrFile);
RedirectHandle(&siStartupInfo, fdes[0][1], STD_OUTPUT_HANDLE);
exec_simple_proc(queue[0], hErrFile, sa, siStartupInfo, piProcessInfo);
close_handles(hInFile, hOutFile, hErrFile);
CloseHandle(fdes[0][1]);
for(i = 1; i < (*queue_len) - 1; ++i){
redirrect_command(queue[0], &siStartupInfo, &hInFile, &hOutFile, &hErrFile);
RedirectHandle(&siStartupInfo, fdes[i][1], STD_OUTPUT_HANDLE);
RedirectHandle(&siStartupInfo, fdes[i-1][0], STD_INPUT_HANDLE);
exec_simple_proc(queue[i], hErrFile, sa, siStartupInfo, piProcessInfo);
close_handles(hInFile, hOutFile, hErrFile);
CloseHandle(fdes[i][1]);
CloseHandle(fdes[i-1][0]);
}
redirrect_command(queue[(*queue_len)-1], &siStartupInfo, &hInFile, &hOutFile, &hErrFile);
RedirectHandle(&siStartupInfo, fdes[(*queue_len)-2][0], STD_INPUT_HANDLE);
exec_simple_proc(queue[(*queue_len)-1], hErrFile, sa, siStartupInfo, piProcessInfo);
close_handles(hInFile, hOutFile, hErrFile);
CloseHandle(fdes[(*queue_len)-2][0]);
}
return true; /* TODO replace with actual exit status */
}
