native/runner/runnerw/runnerw.cpp

   1 #include <windows.h>
   2 #include <stdio.h>
   3 #include <tlhelp32.h>
   4 #include <iostream>
   5 #include <string>
   6
   7 void PrintUsage() {
   8         printf("Usage: runnerw.exe <app> <args>\n");
   9         printf("where <app> is console application and <args> it's arguments.\n");
  10         printf("\n");
  11         printf(
  12                         "Runner invokes console application as a process with inherited input and output streams.\n");
  13         printf(
  14                         "Input stream is scanned for presence of 2 char 255(IAC) and 243(BRK) sequence and generates Ctrl-Break event in that case.\n");
  15         printf(
  16                         "Also in case of all type of event(Ctrl-C, Close, Shutdown etc) Ctrl-Break event is generated.\n");
  17
  18         exit(0);
  19 }
  20
  21 void ErrorMessage(char *str) {
  22
  23         LPVOID msg;
  24
  25         FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
  26                         NULL, GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
  27                         (LPTSTR) &msg, 0, NULL);
  28
  29         printf("%s: %s\n", str, msg);
  30         LocalFree(msg);
  31 }
  32
  33 void CtrlBreak() {
  34         if (!GenerateConsoleCtrlEvent(CTRL_BREAK_EVENT, 0)) {
  35                 ErrorMessage("GenerateConsoleCtrlEvent");
  36         }
  37 }
  38
  39 BOOL is_iac = FALSE;
  40
  41 char IAC = 5;
  42 char BRK = 3;
  43
  44 BOOL Scan(char buf[], int count) {
  45         for (int i = 0; i < count; i++) {
  46                 if (is_iac) {
  47                         if (buf[i] == BRK) {
  48                                 CtrlBreak();
  49                                 return TRUE;
  50                         } else {
  51                                 is_iac = FALSE;
  52                         }
  53                 }
  54                 if (buf[i] == IAC) {
  55                         is_iac = TRUE;
  56                 }
  57         }
  58
  59         return FALSE;
  60 }
  61
  62 BOOL CtrlHandler(DWORD fdwCtrlType) {
  63         switch (fdwCtrlType) {
  64         case CTRL_C_EVENT:
  65         case CTRL_CLOSE_EVENT:
  66         case CTRL_LOGOFF_EVENT:
  67         case CTRL_SHUTDOWN_EVENT:
  68                 CtrlBreak();
  69                 return (TRUE);
  70         case CTRL_BREAK_EVENT:
  71                 return FALSE;
  72         default:
  73                 return FALSE;
  74         }
  75 }
  76
  77 struct StdInThreadParams
  78 {
  79         HANDLE hEvent;
  80         HANDLE write_stdin;
  81 };
  82
  83 DWORD WINAPI StdInThread(void *param)
  84 {
  85         StdInThreadParams *threadParams = (StdInThreadParams *) param;
  86         char buf[1];
  87         memset(buf, 0, sizeof(buf));
  88
  89         HANDLE hStdin = GetStdHandle(STD_INPUT_HANDLE);
  90         while(true)
  91         {
  92                 DWORD cbRead = 0;
  93                 DWORD cbWrite = 0;
  94
  95                 char c;
  96                 ReadFile(hStdin, &c, 1, &cbRead, NULL);
  97                 if (cbRead > 0)
  98                 {
  99                         buf[0] = c;
 100                         bool ctrlBroken = Scan(buf, 1);
 101                         WriteFile(threadParams->write_stdin, buf, 1, &cbWrite, NULL);
 102                         if (ctrlBroken)
 103                         {
 104                                 SetEvent(threadParams->hEvent);
 105                                 break;
 106                         }
 107                 }
 108         }
 109         return 0;
 110 }
 111
 112 int main(int argc, char * argv[]) {
 113         if (argc < 2) {
 114                 PrintUsage();
 115         }
 116
 117         std::string app(argv[1]);
 118         std::string args("");
 119
 120         for (int i = 2; i < argc; i++) {
 121                 args += " ";
 122                 args += argv[i];
 123         }
 124
 125         if (app.length() == 0) {
 126                 PrintUsage();
 127         }
 128
 129         STARTUPINFO si;
 130         SECURITY_ATTRIBUTES sa;
 131         PROCESS_INFORMATION pi;
 132
 133         HANDLE newstdin, write_stdin;
 134
 135         sa.lpSecurityDescriptor = NULL;
 136
 137         sa.nLength = sizeof(SECURITY_ATTRIBUTES);
 138         sa.bInheritHandle = true;
 139
 140         if (!CreatePipe(&newstdin, &write_stdin, &sa, 0)) {
 141                 ErrorMessage("CreatePipe");
 142                 exit(0);
 143         }
 144
 145         GetStartupInfo(&si);
 146
 147         si.dwFlags = STARTF_USESTDHANDLES;
 148         si.wShowWindow = SW_HIDE;
 149         si.hStdOutput = GetStdHandle(STD_OUTPUT_HANDLE);
 150         si.hStdError = GetStdHandle(STD_ERROR_HANDLE);
 151         si.hStdInput = newstdin;
 152
 153         char* c_app = new char[app.size() + 1];
 154         strcpy(c_app, app.c_str());
 155
 156         char* c_args = new char[args.size() + 1];
 157         strcpy(c_args, args.c_str());
 158
 159         SetConsoleCtrlHandler((PHANDLER_ROUTINE) CtrlHandler, TRUE);
 160
 161         if (!CreateProcess(c_app, // Application name
 162                         c_args, // Application arguments
 163                         NULL, NULL, TRUE, CREATE_DEFAULT_ERROR_MODE, NULL, NULL, &si, &pi)) {
 164                 ErrorMessage("CreateProcess");
 165                 CloseHandle(newstdin);
 166                 CloseHandle(write_stdin);
 167                 exit(0);
 168         }
 169
 170         unsigned long exit = 0;
 171         unsigned long b_read;
 172         unsigned long avail;
 173
 174         HANDLE threadEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
 175
 176         StdInThreadParams params;
 177         params.hEvent = threadEvent;
 178         params.write_stdin = write_stdin;
 179
 180         CreateThread(NULL, 0, &StdInThread, &params, 0, NULL);
 181
 182         HANDLE objects_to_wait[2];
 183         objects_to_wait[0] = threadEvent;
 184         objects_to_wait[1] = pi.hProcess;
 185
 186         while(true)
 187         {
 188                 int rc = WaitForMultipleObjects(2, objects_to_wait, FALSE, INFINITE);
 189                 if (rc == WAIT_OBJECT_0 + 1)
 190                 {
 191                         break;
 192                 }
 193         }
 194
 195         GetExitCodeProcess(pi.hProcess, &exit);
 196
 197         CloseHandle(pi.hThread);
 198         CloseHandle(pi.hProcess);
 199         CloseHandle(newstdin);
 200         CloseHandle(write_stdin);
 201         return exit;
 202 }