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/*
* Very simple test application for mailslots
* (C) 2005 Jelmer Vernooij <jelmer@samba.org>
* Published to the public domain
*/
#include <windows.h>
#include <stdio.h>
int read_slot(const char *mailslotname)
{
HANDLE h;
DWORD nr;
char data[30000];
DWORD nextsize, nummsg = 0;
if (strncmp(mailslotname, "\\\\.\\mailslot\\", 13) && strncmp(mailslotname, "\\\\*\\mailslot\\", 13)) {
printf("Must specify local mailslot name (starting with \\\\.\\mailslot\\)\n");
return 1;
}
h = CreateMailslot(mailslotname, 0, MAILSLOT_WAIT_FOREVER, NULL);
if (h == INVALID_HANDLE_VALUE) {
printf("Unable to create mailslot %s: %d\n", mailslotname, GetLastError());
return 1;
}
if (!ReadFile(h, data, sizeof(data)-1, &nr, NULL)) {
printf("Error reading: %d\n", GetLastError());
return 1;
}
data[nr] = '\0';
printf("%s\n", data);
CloseHandle(h);
}
int write_slot(const char *mailslotname)
{
HANDLE h;
DWORD nw;
char data[30000];
h = CreateFile(mailslotname, GENERIC_WRITE, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (h == INVALID_HANDLE_VALUE) {
printf("Unable to open file: %d\n", GetLastError());
return 1;
}
gets(data);
if (!WriteFile(h, data, strlen(data), &nw, NULL)) {
printf("Error writing file: %d\n", GetLastError());
return 1;
}
CloseHandle(h);
}
int main(int argc, char **argv)
{
if (argc < 3 ||
(strcmp(argv[1], "read") && strcmp(argv[1], "write"))) {
printf("Usage: %s read|write mailslot\n", argv[0]);
return 1;
}
if (!strcmp(argv[1], "read")) {
return read_slot(argv[2]);
}
if (!strcmp(argv[1], "write")) {
return write_slot(argv[2]);
}
return 0;
}
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