/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ #include #include #include #include #include #include #include #include #include /* FTP LIBS */ #include "ftpServer.h" #include "ftpData.h" #include "ftpCommandsElaborate.h" #include "fileManagement.h" #include "logFunctions.h" /* Catch Signal Handler functio */ void signal_callback_handler(int signum){ printf("Caught signal SIGPIPE %d\n",signum); } #define SERVER_PORT 21 static ftpDataType ftpData; static int createSocket(int port); static void closeSocket(int processingSocket); static void initFtpData(void); static int processCommand(int processingElement); static int getMaximumSocketFd(int mainSocket, ftpDataType * data); void pasvThreadHandlerCleanup(void *socketId) { int theSocketId = *(int *)socketId; printTimeStamp(); printf("\nCleanup called for thread id: %d", theSocketId); printf("\nClosing pasv socket (%d) ok!", theSocketId); shutdown(ftpData.clients[theSocketId].pasvData.passiveSocketConnection, SHUT_RDWR); shutdown(ftpData.clients[theSocketId].pasvData.passiveSocket, SHUT_RDWR); close(ftpData.clients[theSocketId].pasvData.passiveSocketConnection); close(ftpData.clients[theSocketId].pasvData.passiveSocket); resetPasvData(&ftpData.clients[theSocketId].pasvData, 0); } void *pasvThreadHandler(void * socketId) { int theSocketId = *(int *)socketId; pthread_cleanup_push(pasvThreadHandlerCleanup, (void *) &theSocketId); //Setting Alive Flag ftpData.clients[theSocketId].pasvData.threadIsAlive = 1; printf("\nPasv (%d) thread init opening port: %d", theSocketId, ftpData.clients[theSocketId].pasvData.passivePort); ftpData.clients[theSocketId].pasvData.passiveSocket = createPassiveSocket(ftpData.clients[theSocketId].pasvData.passivePort); //Endless loop ftp process while (1) { usleep(1000); if (ftpData.clients[theSocketId].pasvData.passiveSocketIsConnected == 0) { //printTimeStamp(); //printf("Waiting for pasv client connection on port: %d", ftpData.clients[theSocketId].pasvData.passivePort); //Wait for sockets if ((ftpData.clients[theSocketId].pasvData.passiveSocketConnection = accept(ftpData.clients[theSocketId].pasvData.passiveSocket, 0, 0))!=-1) { printTimeStamp(); printf("\nPasv (%d) connection initialized", theSocketId); int error; ftpData.clients[theSocketId].pasvData.passiveSocketIsConnected = 1; //error = fcntl(ftpData.clients[theSocketId].pasvData.passiveSocketConnection, F_SETFL, O_NONBLOCK); } } else { //Conditional lock on thread actions pthread_mutex_lock(&ftpData.clients[theSocketId].pasvData.conditionMutex); printTimeStamp(); printf("\nPasv (%d) waiting for commands..", theSocketId); while (ftpData.clients[theSocketId].pasvData.commandReceived == 0) { printf("\nPasv (%d) waiting for conditional variable..", theSocketId); pthread_cond_wait(&ftpData.clients[theSocketId].pasvData.conditionVariable, &ftpData.clients[theSocketId].pasvData.conditionMutex); } printf("\nPasv (%d) waiting ok, unlock mutex", theSocketId); pthread_mutex_unlock(&ftpData.clients[theSocketId].pasvData.conditionMutex); printf("\nPasv (%d) processing commands..", theSocketId); //the connection is closed // if ((ftpData.clients[theSocketId].pasvData.bufferIndex = read(ftpData.clients[theSocketId].pasvData.passiveSocketConnection, ftpData.clients[theSocketId].pasvData.buffer, CLIENT_BUFFER_STRING_SIZE)) == 0) // { /// break; // } //Some data is received //if (ftpData.clients[theSocketId].pasvData.bufferIndex > 0) // { // int i = 0; // for (i = 0; i < ftpData.clients[theSocketId].pasvData.bufferIndex; i++) // { // ; // } // usleep(100); //write(ftpData.clients[theSocketId].pasvData.passiveSocketConnection, ftpData.clients[theSocketId].pasvData.buffer, ftpData.clients[theSocketId].pasvData.bufferIndex); // } if (ftpData.clients[theSocketId].pasvData.commandReceived == 1 && ((strncmp(ftpData.clients[theSocketId].pasvData.theCommandReceived, "STOR", strlen("STOR")) == 0) || (strncmp(ftpData.clients[theSocketId].pasvData.theCommandReceived, "stor", strlen("stor")) == 0)) && ftpData.clients[theSocketId].pasvData.theFileNameToStorIndex > 0) { //Set the busy flag ftpData.clients[theSocketId].pasvData.threadIsBusy = 1; FILE *theStorFile; char theResponse[FTP_COMMAND_ELABORATE_CHAR_BUFFER]; memset(theResponse, 0, FTP_COMMAND_ELABORATE_CHAR_BUFFER); char theAbsoluteFileNamePath[FTP_COMMAND_ELABORATE_CHAR_BUFFER]; memset(theAbsoluteFileNamePath, 0, FTP_COMMAND_ELABORATE_CHAR_BUFFER); char *theFullFileName; theFullFileName = (char *) malloc(ftpData.clients[theSocketId].login.absolutePath.textLen+1); strcpy(theFullFileName, ftpData.clients[theSocketId].login.absolutePath.text); if (theFullFileName[strlen(theAbsoluteFileNamePath)-1] != '/') FILE_AppendToString(&theFullFileName, "/"); FILE_AppendToString(&theFullFileName, ftpData.clients[theSocketId].pasvData.theFileNameToStor); theStorFile = fopen(theFullFileName, "wb"); printf("\nSaving new file to the server: %s", theFullFileName); strcpy(theResponse, "150 Accepted data connection\r\n"); write(ftpData.clients[theSocketId].socketDescriptor, theResponse, strlen(theResponse)); while(1) { if ((ftpData.clients[theSocketId].pasvData.bufferIndex = read(ftpData.clients[theSocketId].pasvData.passiveSocketConnection, ftpData.clients[theSocketId].pasvData.buffer, CLIENT_BUFFER_STRING_SIZE)) == 0) { //Client is disconnected! break; } if (ftpData.clients[theSocketId].pasvData.bufferIndex > 0) { fwrite(ftpData.clients[theSocketId].pasvData.buffer, ftpData.clients[theSocketId].pasvData.bufferIndex, 1, theStorFile); usleep(100); } } close(theStorFile); free(theFullFileName); memset(theResponse, 0, FTP_COMMAND_ELABORATE_CHAR_BUFFER); sprintf(theResponse, "226 file stor ok\r\n"); write(ftpData.clients[theSocketId].socketDescriptor, theResponse, strlen(theResponse)); break; } else if (ftpData.clients[theSocketId].pasvData.commandReceived == 1 && ((strncmp(ftpData.clients[theSocketId].pasvData.theCommandReceived, "LIST", strlen("LIST")) == 0) || (strncmp(ftpData.clients[theSocketId].pasvData.theCommandReceived, "list", strlen("list")) == 0)) ) { DYNV_VectorGenericDataType directoryInfo; DYNV_VectorGeneric_Init(&directoryInfo); //printf("directoryInfo address: %lX", &directoryInfo); int i; getListDataInfo(ftpData.clients[theSocketId].login.absolutePath.text, &directoryInfo); printf("\nPasv (%d) ftpData.clients[theSocketId].login.absolutePath.text = %s",theSocketId, ftpData.clients[theSocketId].login.absolutePath.text); char theResponse[FTP_COMMAND_ELABORATE_CHAR_BUFFER]; memset(theResponse, 0, FTP_COMMAND_ELABORATE_CHAR_BUFFER); strcpy(theResponse, "150 Accepted data connection\r\n"); write(ftpData.clients[theSocketId].socketDescriptor, theResponse, strlen(theResponse)); char theBufferWrite[1024]; memset(theBufferWrite, 0, 1024); sprintf(theBufferWrite, "total %d\r\n", directoryInfo.Size); write(ftpData.clients[theSocketId].pasvData.passiveSocketConnection, theBufferWrite, strlen(theBufferWrite)); //printf("%s", theBufferWrite); for (i = 0; i < directoryInfo.Size; i++) { memset(theBufferWrite, 0, 1024); sprintf(theBufferWrite, "%s %d %s %s %d %s %s\r\n", ((ftpListDataType *) directoryInfo.Data[i])->inodePermissionString ,((ftpListDataType *) directoryInfo.Data[i])->numberOfSubDirectories ,((ftpListDataType *) directoryInfo.Data[i])->owner ,((ftpListDataType *) directoryInfo.Data[i])->groupOwner ,((ftpListDataType *) directoryInfo.Data[i])->fileSize ,((ftpListDataType *) directoryInfo.Data[i])->lastModifiedDataString ,((ftpListDataType *) directoryInfo.Data[i])->fileNameNoPath); //printf("%s", theBufferWrite); write(ftpData.clients[theSocketId].pasvData.passiveSocketConnection, theBufferWrite, strlen(theBufferWrite)); } memset(theResponse, 0, FTP_COMMAND_ELABORATE_CHAR_BUFFER); sprintf(theResponse, "226 %d matches total\r\n", directoryInfo.Size); write(ftpData.clients[theSocketId].socketDescriptor, theResponse, strlen(theResponse)); int theSize = directoryInfo.Size; char ** lastToDestroy = NULL; if (theSize > 0) { lastToDestroy = ((ftpListDataType *)directoryInfo.Data[0])->fileList; } directoryInfo.Destroy(&directoryInfo, deleteListDataInfoVector); if (theSize > 0) { free(lastToDestroy); } printf("\nPasv (%d) List end", theSocketId); break; } else if (ftpData.clients[theSocketId].pasvData.commandReceived == 1 && ((strncmp(ftpData.clients[theSocketId].pasvData.theCommandReceived, "RETR", strlen("RETR")) == 0) || (strncmp(ftpData.clients[theSocketId].pasvData.theCommandReceived, "retr", strlen("retr")) == 0))) { //Set the busy flag ftpData.clients[theSocketId].pasvData.threadIsBusy = 1; int theFileSize = 0; int writenSize = 0; char theResponse[FTP_COMMAND_ELABORATE_CHAR_BUFFER]; printTimeStamp(); printf("The (%d) pasvData Command: %s",theSocketId, ftpData.clients[theSocketId].pasvData.theCommandReceived); int writeReturn = 0; int i; char theFileName[CLIENT_COMMAND_STRING_SIZE]; int theFileNameCursor = 0; memset(theFileName, 0, CLIENT_COMMAND_STRING_SIZE); char *theFullFileName; for (i = strlen("RETR") + 1; i < CLIENT_COMMAND_STRING_SIZE; i++) { if (ftpData.clients[theSocketId].pasvData.theCommandReceived[i] == '\r' || ftpData.clients[theSocketId].pasvData.theCommandReceived[i] == '\n' || ftpData.clients[theSocketId].pasvData.theCommandReceived[i] == '\0') { break; } if (theFileNameCursor < CLIENT_COMMAND_STRING_SIZE) { theFileName[theFileNameCursor++] = ftpData.clients[theSocketId].pasvData.theCommandReceived[i]; } } theFullFileName = (char *) malloc(ftpData.clients[theSocketId].login.absolutePath.textLen+1); strcpy(theFullFileName, ftpData.clients[theSocketId].login.absolutePath.text); FILE_AppendToString(&theFullFileName, "/"); FILE_AppendToString(&theFullFileName, theFileName); if (FILE_IsFile(theFullFileName) == 0) break; theFileSize = FILE_GetFileSizeFromPath(theFullFileName); memset(theResponse, 0, FTP_COMMAND_ELABORATE_CHAR_BUFFER); strcpy(theResponse, "150 Accepted data connection\r\n"); writeReturn = write(ftpData.clients[theSocketId].socketDescriptor, theResponse, strlen(theResponse)); printf("\nPasv (%d) writeReturn: %d",theSocketId, writeReturn); fflush(0); writenSize = writeRetrFile(theFullFileName, ftpData.clients[theSocketId].pasvData.passiveSocketConnection, ftpData.clients[theSocketId].pasvData.retrRestartAtByte); //writeReturn = write(ftpData.clients[theSocketId].pasvData.passiveSocketConnection, theFullFileContent+ftpData.clients[theSocketId].pasvData.retrRestartAtByte, theFileSize-ftpData.clients[theSocketId].pasvData.retrRestartAtByte); ftpData.clients[theSocketId].pasvData.retrRestartAtByte = 0; printf("\nPasv (%d) writeReturn data: %d",theSocketId, writeReturn); fflush(0); free(theFullFileName); //226-File successfully transferred //226 0.013 seconds (measured here), 105.22 Kbytes per second memset(theResponse, 0, FTP_COMMAND_ELABORATE_CHAR_BUFFER); sprintf(theResponse, "226-File successfully transferred\r\n226 done\r\n"); writeReturn = write(ftpData.clients[theSocketId].socketDescriptor, theResponse, strlen(theResponse)); printf("\nPasv (%d) writeReturn response to 21: %d",theSocketId, writeReturn); fflush(0); break; } break; } } pthread_exit((void *)1); pthread_cleanup_pop(0); pthread_exit((void *)2); return NULL; } void runFtpServer(void) { static int processingSock = 0; static int maxSocketFD = 0; //Initialize all ftp data initFtpData(); //Socket main creator ftpData.theSocket = createSocket(SERVER_PORT); printTimeStamp(); printf("uFTP server starting.."); printf("\n Server: Clients connected: %d", ftpData.connectedClients); printf("\nServer: Max Client Allowed: %d", ftpData.maxClients); fd_set rset, wset, eset, rsetTemp, wsetTemp, esetTemp; //Initialize the select structure FD_ZERO(&rset); FD_ZERO(&wset); FD_ZERO(&eset); FD_ZERO(&rsetTemp); FD_ZERO(&wsetTemp); FD_ZERO(&esetTemp); FD_SET(ftpData.theSocket, &rset); FD_SET(ftpData.theSocket, &wset); FD_SET(ftpData.theSocket, &eset); maxSocketFD = ftpData.theSocket+1; //Endless loop ftp process while (1) { int i, selectResult; struct timeval selectMaximumLockTime; // sleep for 1 second! selectMaximumLockTime.tv_sec = 10; selectMaximumLockTime.tv_usec = 0; memcpy(&rsetTemp, &rset, sizeof(rsetTemp)); memcpy(&wsetTemp, &wset, sizeof(wsetTemp)); memcpy(&esetTemp, &eset, sizeof(esetTemp)); //printf("\n\nSelect will wait for socket data.. "); if (ftpData.connectedClients < ftpData.maxClients) { printf("\nServer: Clients connected: %d", ftpData.connectedClients); selectResult = select(maxSocketFD, &rsetTemp, NULL, &esetTemp, &selectMaximumLockTime); } else { printf("\nServer (maximum reached): Clients connected: %d", ftpData.connectedClients); selectResult = select(maxSocketFD, &rsetTemp, NULL, &esetTemp, &selectMaximumLockTime); } if (selectResult == 0) { printf("select() timed out!\n"); continue; } for (processingSock = 0; processingSock < ftpData.maxClients; processingSock++) { if (ftpData.clients[processingSock].socketIsConnected == 0 && FD_ISSET(ftpData.theSocket, &rsetTemp)) { //Wait for sockets if ((ftpData.clients[processingSock].socketDescriptor = accept(ftpData.theSocket,0 ,0 ))!=-1) { int i; int error; ftpData.connectedClients++; ftpData.clients[processingSock].socketIsConnected = 1; error = fcntl(ftpData.clients[processingSock].socketDescriptor, F_SETFL, O_NONBLOCK); printTimeStamp(); printf("Server: New client connected with id: %d", processingSock); printf("\nServer: Clients connected: %d", ftpData.connectedClients); write(ftpData.clients[processingSock].socketDescriptor, ftpData.welcomeMessage, strlen(ftpData.welcomeMessage)); FD_SET(ftpData.clients[processingSock].socketDescriptor, &rset); FD_SET(ftpData.clients[processingSock].socketDescriptor, &wset); FD_SET(ftpData.clients[processingSock].socketDescriptor, &eset); maxSocketFD = getMaximumSocketFd(ftpData.theSocket, &ftpData) + 1; } } else if (FD_ISSET(ftpData.clients[processingSock].socketDescriptor, &rsetTemp) || FD_ISSET(ftpData.clients[processingSock].socketDescriptor, &esetTemp)) { //The client is not connected anymore if ((ftpData.clients[processingSock].bufferIndex = read(ftpData.clients[processingSock].socketDescriptor, ftpData.clients[processingSock].buffer, CLIENT_BUFFER_STRING_SIZE)) == 0) { FD_CLR(ftpData.clients[processingSock].socketDescriptor, &rset); FD_CLR(ftpData.clients[processingSock].socketDescriptor, &wset); FD_CLR(ftpData.clients[processingSock].socketDescriptor, &eset); maxSocketFD = getMaximumSocketFd(ftpData.theSocket, &ftpData) + 1; closeSocket(processingSock); } //Some commands has been received if (ftpData.clients[processingSock].bufferIndex > 0) { int i = 0; int commandProcessStatus = 0; for (i = 0; i < ftpData.clients[processingSock].bufferIndex; i++) { if (ftpData.clients[processingSock].commandIndex < CLIENT_COMMAND_STRING_SIZE) { if (ftpData.clients[processingSock].buffer[i] != '\r' && ftpData.clients[processingSock].buffer[i] != '\n') { ftpData.clients[processingSock].theCommandReceived[ftpData.clients[processingSock].commandIndex++] = ftpData.clients[processingSock].buffer[i]; } if (ftpData.clients[processingSock].buffer[i] == '\n') { ftpData.clients[processingSock].socketCommandReceived = 1; commandProcessStatus = processCommand(processingSock); //Echo unrecognized commands if (commandProcessStatus == 0) { write(ftpData.clients[processingSock].socketDescriptor, ftpData.clients[processingSock].buffer, ftpData.clients[processingSock].bufferIndex); } } } else { //Command overflow can't be processed ftpData.clients[processingSock].commandIndex = 0; memset(ftpData.clients[processingSock].theCommandReceived, 0, CLIENT_COMMAND_STRING_SIZE); //Write some error message to the client break; } } usleep(100); memset(ftpData.clients[processingSock].buffer, 0, CLIENT_BUFFER_STRING_SIZE); } } } } //Server Close closeSocket(ftpData.theSocket); printTimeStamp(); printf("Server: Closed."); ftpData.clients[processingSock].socketIsConnected = 0; return; } /* STATIC FUNCTIONS */ static int createSocket(int port) { int sock, errore; struct sockaddr_in temp; //Socket creation sock = socket(AF_INET, SOCK_STREAM, 0); temp.sin_family = AF_INET; temp.sin_addr.s_addr = INADDR_ANY; temp.sin_port = htons(port); //No blocking socket errore = fcntl(sock, F_SETFL, O_NONBLOCK); int reuse = 1; if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (const char*)&reuse, sizeof(reuse)) < 0) perror("setsockopt(SO_REUSEADDR) failed"); if (setsockopt(sock, SOL_SOCKET, SO_REUSEPORT, (const char*)&reuse, sizeof(reuse)) < 0) perror("setsockopt(SO_REUSEPORT) failed"); //Bind socket errore = bind(sock,(struct sockaddr*) &temp,sizeof(temp)); //Number of client allowed errore = listen(sock, ftpData.maxClients); return sock; } int createPassiveSocket(int port) { int sock, errore, flags; struct sockaddr_in temp; //Socket creation sock = socket(AF_INET, SOCK_STREAM, 0); temp.sin_family = AF_INET; temp.sin_addr.s_addr = INADDR_ANY; temp.sin_port = htons(port); flags = fcntl(sock, F_GETFL, 0); flags &= ~O_NONBLOCK; errore = fcntl(sock, F_SETFL, flags); int reuse = 1; if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (const char*)&reuse, sizeof(reuse)) < 0) perror("setsockopt(SO_REUSEADDR) failed"); if (setsockopt(sock, SOL_SOCKET, SO_REUSEPORT, (const char*)&reuse, sizeof(reuse)) < 0) perror("setsockopt(SO_REUSEPORT) failed"); //Bind socket errore = bind(sock,(struct sockaddr*) &temp,sizeof(temp)); //Number of client allowed errore = listen(sock, 1); return sock; } static void closeSocket(int processingSocket) { //Close the socket close(ftpData.clients[processingSocket].socketDescriptor); resetClientData(&ftpData.clients[processingSocket], 0); resetPasvData(&ftpData.clients[processingSocket].pasvData, 0); //Update client connecteds ftpData.connectedClients--; if (ftpData.connectedClients < 0){ ftpData.connectedClients = 0; } printTimeStamp(); printf("Client id: %d disconnected", processingSocket); printf("\nServer: Clients connected:%d", ftpData.connectedClients); return; } static void initFtpData(void) { int i; ftpData.connectedClients = 0; ftpData.maxClients = 10; ftpData.clients = (clientDataType *) malloc( sizeof(clientDataType) * ftpData.maxClients); ftpData.serverIp.ip[0] = 127; ftpData.serverIp.ip[1] = 0; ftpData.serverIp.ip[2] = 0; ftpData.serverIp.ip[3] = 1; memset(ftpData.welcomeMessage, 0, 1024); strcpy(ftpData.welcomeMessage, "220 Hello\r\n"); //Client data reset to zero for (i = 0; i < ftpData.maxClients; i++) { resetPasvData(&ftpData.clients[i].pasvData, 1); resetClientData(&ftpData.clients[i], 1); ftpData.clients[i].clientProgressiveNumber = i; } return; } static int processCommand(int processingElement) { int toReturn = 0; printTimeStamp(); printf ("Command received from (%d): %s", processingElement, ftpData.clients[processingElement].theCommandReceived); //Process Command if(strncmp(ftpData.clients[processingElement].theCommandReceived, "USER", strlen("USER")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "user", strlen("user")) == 0) { printf("\nUSER COMMAND RECEIVED"); toReturn = parseCommandUser(&ftpData.clients[processingElement]); } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "PASS", strlen("PASS")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "pass", strlen("pass")) == 0) { printf("\nPASS COMMAND RECEIVED"); toReturn = parseCommandPass(&ftpData.clients[processingElement]); } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "AUTH", strlen("AUTH")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "auth", strlen("auth")) == 0) { printf("\nAUTH COMMAND RECEIVED"); toReturn = parseCommandAuth(&ftpData.clients[processingElement]); } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "PWD", strlen("PWD")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "pwd", strlen("pwd")) == 0) { printf("\nPWD COMMAND RECEIVED"); toReturn = parseCommandPwd(&ftpData.clients[processingElement]); } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "SYST", strlen("SYST")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "syst", strlen("syst")) == 0) { printf("\nSYST COMMAND RECEIVED"); toReturn = parseCommandSyst(&ftpData.clients[processingElement]); } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "FEAT", strlen("FEAT")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "feat", strlen("feat")) == 0) { printf("\nFEAT COMMAND RECEIVED"); toReturn = parseCommandFeat(&ftpData.clients[processingElement]); } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "TYPE I", strlen("TYPE I")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "type i", strlen("type i")) == 0) { printf("\nTYPE I COMMAND RECEIVED"); toReturn = parseCommandTypeI(&ftpData.clients[processingElement]); } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "PASV", strlen("PASV")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "pasv", strlen("pasv")) == 0) { printf("\nPASV COMMAND RECEIVED"); setRandomicPort(&ftpData, processingElement); toReturn = parseCommandPasv(&ftpData, processingElement); } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "LIST", strlen("LIST")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "list", strlen("list")) == 0) { printf("\nLIST COMMAND RECEIVED"); toReturn = parseCommandList(&ftpData, processingElement); } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "CWD", strlen("CWD")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "cwd", strlen("cwd")) == 0) { printf("\nCWD COMMAND RECEIVED"); toReturn = parseCommandCwd(&ftpData.clients[processingElement]); } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "CDUP", strlen("CDUP")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "cdup", strlen("cdup")) == 0) { printf("\nCDUP COMMAND RECEIVED"); toReturn = parseCommandCdup(&ftpData.clients[processingElement]); } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "REST", strlen("REST")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "rest", strlen("rest")) == 0) { printf("\nREST COMMAND RECEIVED"); toReturn = parseCommandRest(&ftpData.clients[processingElement]); } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "RETR", strlen("RETR")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "retr", strlen("retr")) == 0) { printf("\nRETR COMMAND RECEIVED"); toReturn = parseCommandRetr(&ftpData, processingElement); } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "STOR", strlen("STOR")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "stor", strlen("stor")) == 0) { printf("\nSTOR COMMAND RECEIVED"); toReturn = parseCommandStor(&ftpData, processingElement); } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "MKD", strlen("MKD")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "mkd", strlen("mkd")) == 0) { printf("\nMKD command received"); toReturn = parseCommandMkd(&ftpData.clients[processingElement]); } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "ABOR", strlen("ABOR")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "abor", strlen("abor")) == 0) { printf("\nABOR command received"); toReturn = parseCommandAbor(&ftpData, processingElement); } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "DELE", strlen("DELE")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "dele", strlen("dele")) == 0) { printf("\nDELE command received"); toReturn = parseCommandDele(&ftpData.clients[processingElement]); } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "MTDM", strlen("MTDM")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "mtdm", strlen("mtdm")) == 0) { printf("\nMTDM command received"); //To implement } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "NLST", strlen("NLST")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "nlst", strlen("nlst")) == 0) { printf("\nNLST command received"); //To implement } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "PORT", strlen("PORT")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "port", strlen("port")) == 0) { printf("\nPORT command received"); //To implement } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "QUIT", strlen("QUIT")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "quit", strlen("quit")) == 0) { printf("\nQUIT command received"); //To implement } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "RMD", strlen("RMD")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "rmd", strlen("rmd")) == 0) { printf("\nRMD command received"); toReturn = parseCommandRmd(&ftpData.clients[processingElement]); } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "RNFR", strlen("RNFR")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "rnfr", strlen("rnfr")) == 0) { printf("\nRNFR command received"); //To implement //350 RNFR accepted - file exists, ready for destination //550 Sorry, but that file doesn't exist } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "RNTO", strlen("RNTO")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "rnto", strlen("rnto")) == 0) { printf("\nRNTO command received"); //To implement //503 Need RNFR before RNTO //250 File successfully renamed or moved } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "SIZE", strlen("SIZE")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "size", strlen("size")) == 0) { printf("\nSIZE command received"); //To implement //213 71 //550 Can't check for file existence } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "APPE", strlen("APPE")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "appe", strlen("appe")) == 0) { printf("\nAPPE command received"); //To implement } else if(strncmp(ftpData.clients[processingElement].theCommandReceived, "NOOP", strlen("NOOP")) == 0 || strncmp(ftpData.clients[processingElement].theCommandReceived, "noop", strlen("noop")) == 0) { printf("\nNOOP command received"); //To implement //200 Zzz... } //REST COMMAND //REST 0 //350 Restarting at 0 //RETR info.php //150 Accepted data connection //226-File successfully transferred //226 0.013 seconds (measured here), 105.22 Kbytes per second //227 Entering Passive Mode (192,185,16,65,182,64) //STOR testUgo.txt //150 Accepted data connection //226-File successfully transferred //226 21.350 seconds (measured here), 3.33 bytes per second ftpData.clients[processingElement].commandIndex = 0; memset(ftpData.clients[processingElement].theCommandReceived, 0, CLIENT_COMMAND_STRING_SIZE); return toReturn; } static int getMaximumSocketFd(int mainSocket, ftpDataType * data) { int toReturn = mainSocket; int i = 0; for (i = 0; i < data->maxClients; i++) { if (data->clients[i].socketDescriptor > toReturn) { toReturn = data->clients[i].socketDescriptor; } } return toReturn; }