PA3_DFS

Distributed File System

The code containes 2 files dfClient.c and dfServer.c. The are the 2 main files containing the client ad server code.

Functionalities

1. put [FileName] [subfolder] -- send 4 chunks of file from client to each server
2. get [FileName] [subfolder] -- receive chunks of file from server to client
3. list [subfolder] -- get the list of files that server stores
4. mkdir [subfolder] -- make the directory in server.

If user enters any other command except the above 4, Client doesn't send anything to the server.

For packet transfer, I have used a struct which has the following structure:

struct packet
{
	char username[20];		
	char password[20];
	char command[10];				//will contain the command that user entered
	char message[100];				//If command failed, then this will contain the message from server.
	int code;						//200:Pass,  500:Fail
	char subfolder[100];

	char firstFileName[50];			//First chunk
	char firstFile[FILEPACKETSIZE];
	int firstFileSize;

	char secondFileName[50];		//Second Chunk
	char secondFile[FILEPACKETSIZE];	
	int secondFileSize;
};

where FILEPACKETSIZE is 5*1024 i.e. 5 KB.

How to run:

Server:

gcc dfServer.c -o server ./server DFS1/ 8886

client:

gcc dfClient.c -w -o dfc -lcrypto -lssl ./dfc Client_2/dfc.conf