basic structure and client process chain done

src/djumbai_enqueue/djumbai_enqueue.c

@@ -0,0 +1,30 @@
+#include "djumbai_enqueue.h"
+
+int main() {
+    //Change the root of the djumbai_enqueue process so it doesn't have access to anything else.
+    chroot("/opt/djumbai/queue/");
+	const char *message_queue_path =
+		"mailqueue"; // Replace this with the path to your FIFO
+
+	// Open the FIFO for writing
+	int queue_fd;
+	queue_fd = open(message_queue_path, O_WRONLY);
+	if (queue_fd == -1) {
+		if (errno == ENOENT) {
+			// FIFO does not exist
+			printf("FIFO '%s' does not exist. Exiting...\n", message_queue_path);
+			return 1;
+		} else {
+			perror("open");
+			return 1;
+		}
+	}
+
+	// Read message from stdin
+	unsigned char buffer[MESSAGE_SIZE];
+	read(0, buffer, MESSAGE_SIZE);
+
+	// Write message to message queue
+	write(queue_fd, buffer, MESSAGE_SIZE);
+    close(queue_fd);
+}

src/djumbai_enqueue/djumbai_enqueue.h

@@ -0,0 +1,12 @@
+#ifndef DJUMBAI_ENQUEUE_H
+#define DJUMBAI_ENQUEUE_H
+
+#include "../../libs/protocol/protocol.h"
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int main();
+
+#endif // !DJUMBAI_ENQUEUE_H