testprogs/win32/npecho/npecho_client.c

   1 /*
   2  * Simple Named Pipe Client
   3  * (C) 2005 Jelmer Vernooij <jelmer@samba.org>
   4  * Published to the public domain
   5  */
   6
   7 #include <windows.h>
   8 #include <stdio.h>
   9
  10 #define ECHODATA "Black Dog"
  11
  12 int main(int argc, char *argv[])
  13 {
  14         HANDLE h;
  15         DWORD numread = 0;
  16         char *outbuffer = malloc(strlen(ECHODATA));
  17
  18         if (argc == 1) {
  19                 printf("Usage: %s pipename\n", argv[0]);
  20                 printf("  Where pipename is something like \\\\servername\\NPECHO\n");
  21                 return -1;
  22         }
  23
  24         h = CreateFile(argv[1], GENERIC_READ|GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
  25         if (h == INVALID_HANDLE_VALUE) {
  26                 printf("Error opening: %d\n", GetLastError());
  27                 return -1;
  28         }
  29
  30         if (!WriteFile(h, ECHODATA, strlen(ECHODATA), &numread, NULL)) {
  31                 printf("Error writing: %d\n", GetLastError());
  32                 return -1;
  33         }
  34
  35         if (!ReadFile(h, outbuffer, strlen(ECHODATA), &numread, NULL)) {
  36                 printf("Error reading: %d\n", GetLastError());
  37                 return -1;
  38         }
  39
  40         printf("Read: %s\n", outbuffer);
  41
  42         if (!TransactNamedPipe(h, ECHODATA, strlen(ECHODATA), outbuffer, strlen(ECHODATA), &numread, NULL)) {
  43                 printf("TransactNamedPipe failed: %d!\n", GetLastError());
  44                 return -1;
  45         }
  46
  47         printf("Result: %s\n", outbuffer);
  48
  49         return 0;
  50 }