[英]How to use CreateProcess or ShellExecute to execute piped commands
我想執行一些沒有打開新cmd
管道命令(因此我不能只使用system()
),這是我嘗試執行的命令:
C:\\openssl.exe enc -aes-128-ofb -d -in C:\\encrypted.bin -iv a2b050be9463 -K 6ba62eb7bb2ccace -nopad | C:\\\\mplayer.exe -"
這是我嘗試的:
WCHAR prog[] = L"C:\\openssl.exe";
WCHAR args[] = L"enc -aes-128-ofb -d -in C:\\encrypted.bin -iv a2b050be9463 -K 6ba62eb7bb2ccace -nopad | C:\\mplayer.exe -";
STARTUPINFO si;
PROCESS_INFORMATION pi;
ZeroMemory(&si, sizeof(si));
si.cb = sizeof(si);
ZeroMemory(&pi, sizeof(pi));
CreateProcess(prog, args, NULL, NULL, FALSE, CREATE_NO_WINDOW, NULL, NULL, &si, &pi);
而且它沒有用(沒有錯誤,只是沒有打開)
我也試過這個:
CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE);
HINSTANCE hinstRun1 = ShellExecute(NULL, L"open", L"cmd.exe", str2.c_str(), L"", SW_HIDE);
CoUninitialize();
//str2 == C:\\openssl.exe enc -aes-128-ofb -d -in C:\\encrypted.bin -iv a2b050be9463 -K 6ba62eb7bb2ccace -nopad | C:\\\\mplayer.exe -")
這也不起作用(再次沒有錯誤,只是沒有打開)
當我這樣嘗試時:
system(("cmd.exe /c " str2).c_str());
一切正常(除了打開cmd
窗口的部分。)
如何在沒有新cmd
窗口的情況下從c / c ++程序執行此行?
如果要控制一切,則需要自己創建兩個進程(openssl和mplayer)。 因此,這將是兩個CreateProcess
調用。 當然,然后,您也必須自己創建重定向,這是在創建流程之前使用CreatePipe
完成的。
這是一個示例(尚未編譯,可能需要一些調整):
HANDLE proc1_out;
HANDLE proc2_in;
SECURITY_ATTRIBUTES security_attributes;
// create the pipe between the processes
security_attributes.nLength = sizeof(SECURITY_ATTRIBUTES);
security_attributes.bInheritHandle = TRUE; // pipe handles should be inheritable by sub-processes
security_attributes.lpSecurityDescriptor = NULL;
CreatePipe(&proc2_in, &proc1_out, &security_attributes, 0);
// create the first process
WCHAR proc1_app[] = L"C:\\openssl.exe";
WCHAR proc1_cmd_line[] = L"openssl enc -aes-128-ofb -d -in C:\\encrypted.bin -iv a2b050be9463 -K 6ba62eb7bb2ccace -nopad";
PROCESS_INFORMATION proc1_info;
STARTUPINFO proc1_startup_info;
ZeroMemory(&proc1_info, sizeof(PROCESS_INFORMATION));
ZeroMemory(&proc1_startup_info, sizeof(STARTUPINFO));
proc1_startup_info.cb = sizeof(STARTUPINFO);
proc1_startup_info.hStdInput = GetStdHandle(STD_INPUT_HANDLE);
proc1_startup_info.hStdOutput = child_output_write; // redirected output
proc1_startup_info.hStdError = GetStdHandle(STD_ERROR_HANDLE);
proc1_startup_info.dwFlags |= STARTF_USESTDHANDLES;
CreateProcess(proc1_app, proc1_cmd_line, NULL, NULL, TRUE, 0, NULL, NULL, &proc1_startup_info, &proc1_info);
// create the second process
WCHAR proc2_app[] = L"C:\\mplayer.exe";
WCHAR proc2_cmd_line[] = L"mplayer -";
PROCESS_INFORMATION proc2_info;
STARTUPINFO proc2_startup_info;
ZeroMemory(&proc2_info, sizeof(PROCESS_INFORMATION));
ZeroMemory(&proc2_startup_info, sizeof(STARTUPINFO));
proc2_startup_info.cb = sizeof(STARTUPINFO);
proc2_startup_info.hStdInput = proc2_in; // redirected input
proc2_startup_info.hStdOutput = GetStdHandle(STD_OUTPUT_HANDLE);
proc2_startup_info.hStdError = GetStdHandle(STD_ERROR_HANDLE);
proc2_startup_info.dwFlags |= STARTF_USESTDHANDLES;
CreateProcess(proc2_app, proc2_cmd_line, NULL, NULL, TRUE, 0, NULL, NULL, &proc2_startup_info, &proc2_info);
注意:在傳遞給CreateProcess的命令行參數中,字符串中的第一個“單詞”必須是進程名稱(這不是您要執行的操作)。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.