djumbai_client_receiver done?

libs/protocol/protocol.c

@@ -8,7 +8,7 @@ int new_message(message *m, unsigned int sender, unsigned int isgroup, unsigned
 	m->header.sender = sender;
     m->header.isgroup = isgroup;
 	m->header.receiver = receiver;
-	time(&m->header.timestamp);
+	gettimeofday(&m->header.timestamp,NULL);
 	strncpy(m->content, content, MAX_CONTENT_SIZE);
 	return 0;
 }

libs/protocol/protocol.h

@@ -4,7 +4,7 @@
 #include <limits.h>
 #include <stdint.h>
 #include <string.h>
-#include <time.h>
+#include <sys/time.h>
 
 #define VERSION			 1
 #define MAX_CONTENT_SIZE (PIPE_BUF - sizeof(struct MessageHeader))
@@ -20,7 +20,7 @@ typedef struct MessageHeader {
 	// The receiver is either a user or a group
 	unsigned int receiver;
 	// The message was sent at this timestamp
-	time_t timestamp;
+    struct timeval timestamp;
 } message_header;
 
 typedef struct Message {

src/djumbai_client_receive/djumbai_client_receive.c

@@ -1,11 +1,39 @@
 #include "../../libs/communication/communication.h"
 #include "../../libs/protocol/protocol.h"
 #include <errno.h>
+#include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/stat.h>
+#include <sys/time.h>
 #include <unistd.h>
 
+void create_directory(const char *path, mode_t mode) {
+	struct stat st = {0};
+	if (stat(path, &st) == -1) {
+		if (mkdir(path, mode) == -1) {
+			fprintf(stderr, "Error creating directory %s: %s\n", path, strerror(errno));
+			exit(EXIT_FAILURE);
+		}
+	}
+}
+
+void write_message_to_file(const char *directory, const char *filename, mode_t mode,
+						   unsigned char *msg) {
+	char filepath[PATH_MAX];
+	snprintf(filepath, sizeof(filepath), "%s/%s", directory, filename);
+	int fd = open(filepath, O_WRONLY | O_CREAT | O_EXCL, mode);
+	if (fd == -1) {
+		fprintf(stderr, "Error creating file %s: %s\n", filepath, strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+	if (write(fd, msg, MESSAGE_SIZE) == -1) {
+		fprintf(stderr, "Error writing to file %s: %s\n", filepath, strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+	close(fd);
+}
+
 int main() {
 
 	unsigned char buffer[MESSAGE_SIZE];
@@ -14,49 +42,36 @@ int main() {
 	deserialize_message(buffer, MESSAGE_SIZE, &msg);
 
 	if (msg.header.isgroup) {
-		const char *directory_format = "/opt/djumbai/group/%d/";
+		const char *directory_format = "/opt/djumbai/group/%d/message_box";
-		char group_path[50];
+		char directory[PATH_MAX];
-		sprintf(group_path, directory_format, msg.header.receiver);
+		snprintf(directory, sizeof(directory), directory_format, msg.header.receiver);
-		char message_box_path[70];
+
-		sprintf(message_box_path, group_path, "message_box/");
+		// Ensure that the directory structure exists
+		create_directory(directory, 0070);
+
+		// Write the message to a file inside the sender's folder
+		char timestamp_str[21];
+		unsigned long long timestamp =
+			msg.header.timestamp.tv_sec * 1000 + msg.header.timestamp.tv_usec / 1000;
+		snprintf(timestamp_str, sizeof(timestamp_str), "%lld", timestamp);
+
+		write_message_to_file(directory, timestamp_str, 0020, buffer);
 
-		struct stat st;
-		if (stat(group_path, &st) == -1) {
-			// Directory doesn't exist, so create it
-			if (mkdir(group_path, 0070) == -1) {
-				perror("mkdir");
-				return EXIT_FAILURE;
-			}
-		}
-		if (stat(message_box_path, &st) == -1) {
-			// Directory doesn't exist, so create it
-			if (mkdir(message_box_path, 0070) == -1) {
-				perror("mkdir");
-				return EXIT_FAILURE;
-			}
-		}
-        chroot(message_box_path);
-        //Do the rest
 	} else {
+		const char *directory_format = "/opt/djumbai/user/%d/message_box/%d";
+		char directory[PATH_MAX];
+		snprintf(directory, sizeof(directory), directory_format, msg.header.receiver,
+				 msg.header.sender);
 
-	//	struct stat st;
+		// Ensure that the directory structure exists
-	//	if (stat(user_path, &st) == -1) {
+		create_directory(directory, 0700);
-	//		// Directory doesn't exist, so create it
+
-	//		if (mkdir(user_path, 0700) == -1) {
+		// Write the message to a file inside the sender's folder
-	//			perror("mkdir");
+		char timestamp_str[21];
-	//			return EXIT_FAILURE;
+		unsigned long long timestamp =
-	//		}
+			msg.header.timestamp.tv_sec * 1000 + msg.header.timestamp.tv_usec / 1000;
-	//	}
+		snprintf(timestamp_str, sizeof(timestamp_str), "%lld", timestamp);
-	//	if (stat(message_box_path, &st) == -1) {
+
-	//		// Directory doesn't exist, so create it
+		write_message_to_file(directory, timestamp_str, 0200, buffer);
-	//		if (mkdir(message_box_path, 0700) == -1) {
-	//			perror("mkdir");
-	//			return EXIT_FAILURE;
-	//		}
-	//	}
-    //    chroot(message_box_path);
-        //
-		// Message receiver is a user
-		// Write to the user's mailbox
 	}
 }