delete feature

Author: REXRITZ

server.cpp

@@ -137,6 +137,12 @@ void* processClient(void* arg) {
                 continue;
             }
             session->commit(command[1], connFd, command[2]);
+        } else if(command[0] == "delete") {
+            if(command.size() != 3) {
+                write(connFd, "Usage: delete <filename.txt>", 28);
+                continue;
+            }
+            session->deleteFile(command[1], connFd, command[2]);
         } else {
             cout << "Enter a valid command!" << endl;
         }

server_session.cpp

@@ -209,6 +209,22 @@ void ServerSession::addFile(string filename, int connFd, string username) {
     commit(filename, connFd, username);
 }
 
+void ServerSession::deleteFile(string filename, int connFd, string username) {
+    pthread_mutex_lock(&sessionLock);
+    if(filesMap.find(filename) == filesMap.end()) {
+        write(connFd, "Given filename does not exists!", 29);
+        pthread_mutex_unlock(&sessionLock);
+        return;
+    }
+
+    FileMetaData fileMetaData = filesMap[filename];
+    if(remove(fileMetaData.path.c_str()) == 0)
+        write(connFd, "OK", 2);
+    else
+        write(connFd, "Err: Unable to delete file", 26);
+    pthread_mutex_unlock(&sessionLock);
+}
+
 string ServerSession:: listall() {
     unordered_map<string, FileMetaData>:: iterator it;
     string resp = "";

server_session.h

@@ -34,6 +34,7 @@ class ServerSession {
         const char* authenticateUser(User, string);
         void checkout(string, int, string);
         void commit(string, int, string);
+        void deleteFile(string, int, string);
         void addFile(string, int, string);
         void quit(int, string);
         string listall();