705 lines
23 KiB
C++
705 lines
23 KiB
C++
#ifndef FTPSERVER_H
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#define FTPSERVER_H
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#include "TCPServer.h"
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#include "SDCardManager.h"
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#include "definition.h"
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#define DEBUG_FTPS
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#define READ_WRITE_BUFFER_SIZE 2048
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template <typename T>
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class FTPServer : public TCPServer<T>
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{
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public:
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enum FTPClientState {INIT, WAITING_FOR_COMMANDS};
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enum FTPClientDataTransfer {NONE, LIST_DF, NLST_DF, RETR_DF, STOR_DF};
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enum FileTransferStatus {OK, NOT_FOUND, NO_FILE_NAME};
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enum BinaryFlag {OFF = 0, ON};
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FTPServer(unsigned int port = 21, SDCardManager *sdCardManager = NULL, const char *login = NULL, const char *password = NULL, uint8_t maxClient = MAX_CLIENT, uint16_t clientCommandDataBufferSize = 255) : TCPServer<T>(port, maxClient, clientCommandDataBufferSize),
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_login(NULL),
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_password(NULL),
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_dataPort(1024),
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_dataServer(_dataPort),
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_sdCardManager(sdCardManager)
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{
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if (login != NULL)
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{
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if (strlen(login) > 0)
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{
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_login = (char *)malloc((sizeof(char) * strlen(login)) + 1);
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strcpy(_login, login);
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}
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}
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if (password != NULL)
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{
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if (strlen(password) > 0)
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{
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_password = (char *)malloc((sizeof(char) * strlen(password)) + 1);
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strcpy(_password, password);
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}
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}
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_dataServer.begin(_dataPort);
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}
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void setCustomDataPort(unsigned int port)
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{
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_dataPort = port;
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}
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virtual ~FTPServer()
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{
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free(_login); free(_password);
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}
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protected:
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virtual T* createNewClient(WiFiClient wc)
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{
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return new T(wc, TCPServer<T>::freeClientId(), TCPServer<T>::_clientDataBufferSize);
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}
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virtual void greetClient(T *client)
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{
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//The first time the client connects, we send the server's information
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client->_client.println("220 Welcome to the ESP8266SwissArmyBoard embedded FTP server.");
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client->_clientState = TCPClient::HANDLED;
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}
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virtual void processClientData(T *client)
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{
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if (client->_waitingForDataConnection)
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{
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//#ifdef DEBUG_FTPS
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//Serial.println("Listening for new data client");
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//#endif
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WiFiClient dataClient = _dataServer.available();
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if (dataClient)
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{
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if (dataClient.connected())
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{
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client->_waitingForDataConnection = false;
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client->setDataClient(dataClient);
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#ifdef DEBUG_FTPS
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Serial.println("Data client accepted successfully");
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#endif
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}
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else
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dataClient.stop();
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}
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}
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switch(client->_dataTransferPending)
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{
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case LIST_DF: //We list the files of the current directory
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//We check if the dataConnection is established:
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if (client->_dataClient.connected())
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{
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client->_client.println("150 File status okay;");
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sendFSTree(client);
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client->_client.println("226 Closing data connection.");
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client->_dataClient.stop();
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client->_dataTransferPending = NONE;
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}
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//A timeout should be added
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/*else
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{
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client->_client.println("425 Can't open data connection.");
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}*/
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break;
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case RETR_DF:
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if (client->_dataClient.connected())
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{
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if(client->_fileSentBytes == 0)
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client->_client.println("150 File status okay;");
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FileTransferStatus fts;
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if(!sendFile(client,&fts))//File was sent or error occured
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{
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//we check the return code
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switch(fts)
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{
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case OK:
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client->_client.println("226 Closing data connection.");
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client->_dataClient.stop();
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client->_dataTransferPending = NONE;
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break;
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case NOT_FOUND:
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client->_client.println("451 File not found.");
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client->_dataClient.stop();
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client->_dataTransferPending = NONE;
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break;
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}
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}
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}
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//A timeout should be added
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/*else
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{
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client->_client.println("425 Can't open data connection.");
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}*/
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break;
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case STOR_DF :
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if (client->_dataClient.connected() || client->_dataClient.available())
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{
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if(client->_dataClient.available())
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{
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#ifdef DEBUG_FTPS
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Serial.printf("receiving file %s\n", client->_currentFile);
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#endif
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FileTransferStatus fts = OK;
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if(!writeToSdCard(client, &fts)) //An error occured
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{
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if(fts == NO_FILE_NAME)
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{
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client->_client.println("501 No file name given.");
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}
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else
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{
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client->_client.println("451 Requested action aborted: local error in processing.");
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}
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client->_dataClient.stop();
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client->_fileIsBeeingReceived = false;
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client->_dataTransferPending = NONE;
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}
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else
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client->_fileIsBeeingReceived = true;
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}
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}
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else if(client->_fileIsBeeingReceived)
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{
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#ifdef DEBUG_FTPS
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Serial.println("Whole file received");
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#endif
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client->_client.println("226 Closing data connection.");
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client->_fileIsBeeingReceived = false;
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client->_dataClient.stop();
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client->_dataTransferPending = NONE;
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client->_fileRecvBytes = 0;
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}
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break;
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}
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#ifdef DEBUG_FTPS
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if (client->_newDataAvailable)
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{
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Serial.print("Client --> "); Serial.print(client->_id); Serial.print(" : "); Serial.print((char *)client->_data); Serial.println("#");
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}
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#endif
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if (client->_dataSize > 0)
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{
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switch (client->_ftpClientState)
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{
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case INIT:
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client->setCurrentDirectory(FTP_DIR);
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client->_ftpClientState = WAITING_FOR_COMMANDS;
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break;
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case WAITING_FOR_COMMANDS:
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processCommands(client);
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break;
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}
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}
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}
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private:
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void processCommands(T *client)
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{
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if (!client->parseCommandAndParameters()) //Failed to retrieve command and parameters
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{
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//We can close the connection or do other things
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return;
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}
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#ifdef DEBUG_FTPS
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Serial.printf("Issued command : '%s'\n", client->_ftpCommand);
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Serial.println("Get params :");
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for (int i = 0; i < client->_cmdParameters->count(); i++)
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{
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Serial.print(client->_cmdParameters->getParameter(i)); Serial.print(" : "); Serial.printf("'%s'\n", client->_cmdParameters->getAt(i)->getString());
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}
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#endif
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if (strcmp(client->_ftpCommand, "USER") == 0)
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{
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//We check if we set a login and a password :
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if (_login != NULL && _password != NULL)
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{
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if (client->_cmdParameters->count() > 0)
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{
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client->_client.println("331 User name okay, need password.");
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client->setUsername(client->_cmdParameters->getAt(0)->getString());
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}
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else
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client->_client.println("530 Username required.");
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}
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else //The ftp access is open
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{
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client->_client.println("230 User logged in, proceed.");
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}
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}
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else if (strcmp(client->_ftpCommand, "PASS") == 0)
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{
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//We now check if the username and password correspond
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if (client->_cmdParameters->count() > 0)
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{
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if (strcmp(_login, client->_username) == 0 && strcmp(_password, client->_cmdParameters->getAt(0)->getString()) == 0)
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{
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client->_loggedIn = true;
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client->_client.println("230 User logged in, proceed.");
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}
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else
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{
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client->_client.println("530 Wrong username or password !.");
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}
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}
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else
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{
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client->_client.println("530 Password required.");
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}
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}
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else if (strcmp(client->_ftpCommand, "PWD") == 0) //We set the default directory
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{
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client->_client.printf("257 \"%s\"\r\n", client->_currentDirectory);
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}
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else if (strcmp(client->_ftpCommand, "TYPE") == 0)
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{
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if (client->_cmdParameters->count() > 0)
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{
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switch (client->_cmdParameters->getAt(0)->getString()[0])
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{
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case 'I':
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client->_binaryFlag = ON;
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client->_client.println("200 Command okay.");
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break;
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case 'L':
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client->_binaryFlag = ON;
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client->_client.println("200 Command okay.");
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break;
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case 'A':
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client->_binaryFlag = OFF;
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client->_client.println("200 Command okay.");
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break;
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default:
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client->_client.println("504 Command not implemented for TYPE.");
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}
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}
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else
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{
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client->_client.println("504 Command not implemented for TYPE.");
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}
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}
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else if (strcmp(client->_ftpCommand, "PASV") == 0)
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{
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client->_client.printf("227 Entering Passive Mode (%u,%u,%u,%u,%d,%d).\r\n", WiFi.localIP()[0], WiFi.localIP()[1], WiFi.localIP()[2], WiFi.localIP()[3], _dataPort / 256, _dataPort % 256);
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client->_waitingForDataConnection = true;
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#ifdef DEBUG_FTPS
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Serial.println("Opening data server for new data client");
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#endif
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}
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else if (strcmp(client->_ftpCommand, "LIST") == 0)
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{
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//We inform that a data transfer is pending
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client->_dataTransferPending = LIST_DF;
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}
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else if (strcmp(client->_ftpCommand, "CWD") == 0)
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{
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if (client->_cmdParameters->count() > 0)
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{
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//Go back one level
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if (strcmp(client->_cmdParameters->getAt(0)->getString(), "..") == 0)
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{
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char *dirCopy = (char *)malloc((sizeof(char) * strlen(client->_currentDirectory)) + 1);
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strcpy(dirCopy, client->_currentDirectory);
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char *p = lastIndexOf(dirCopy, '/');
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if (dirCopy == p)
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{
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*(p + 1) = '\0';
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}
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else
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*(p) = '\0';
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#ifdef DEBUG_FTPS
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Serial.printf("Final dir : %s\n", dirCopy);
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#endif
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client->setCurrentDirectory(dirCopy);
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free(dirCopy);
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}
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else if (strcmp(client->_cmdParameters->getAt(0)->getString(), "/") == 0)
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{
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client->setCurrentDirectory("/");
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}
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else
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{
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if(client->_cmdParameters->getAt(0)->getString()[0] == '/')//Then this is a name prefix
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{
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client->setCurrentDirectory(client->_cmdParameters->getAt(0)->getString());
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}
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else
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{
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char *temp = (char *)malloc((sizeof(char) * strlen(client->_currentDirectory)) + (sizeof(char) * strlen(client->_cmdParameters->getAt(0)->getString())) + 2);
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strcpy(temp,client->_currentDirectory);
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if(strcmp(temp, "/") != 0)strcat(temp,"/");
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strcat(temp,client->_cmdParameters->getAt(0)->getString());
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#ifdef DEBUG_FTPS
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Serial.printf("Final dir : %s\n",temp);
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#endif
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client->setCurrentDirectory(temp);
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free(temp);
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}
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}
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client->_client.println("250 Requested file action okay, completed.");
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#ifdef DEBUG_FTPS
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Serial.printf("CWD new dir : %s\n", client->_currentDirectory);
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#endif
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}
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}
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else if(strcmp(client->_ftpCommand, "RETR") == 0)
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{
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if (client->_cmdParameters->count() > 0)
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{
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//We save the file path to be sent
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char *temp = (char *)malloc((sizeof(char) * strlen(client->_currentDirectory)) + (sizeof(char) * strlen(client->_cmdParameters->getAt(0)->getString())) + (strcmp(client->_currentDirectory,"/") == 0 ? 0 : 1) + 1);
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strcpy(temp, client->_currentDirectory);
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if(strcmp(client->_currentDirectory,"/") != 0 )strcat(temp, "/");
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strcat(temp, client->_cmdParameters->getAt(0)->getString());
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client->setCurrentFile(temp);
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#ifdef DEBUG_FTPS
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Serial.printf("File to donwload : %s\n", temp);
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#endif
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free(temp);
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client->_dataTransferPending = RETR_DF;
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}
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}
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else if(strcmp(client->_ftpCommand, "MKD") == 0)
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{
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if (client->_cmdParameters->count() > 0)
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{
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uint16_t dirNameSize(0), paramCount(client->_cmdParameters->count());
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char *dirName(NULL);
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for(int i(0); i < paramCount; i++)
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{
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dirNameSize += strlen(client->_cmdParameters->getAt(i)->getString());
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if(i != paramCount-1)
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dirNameSize++;
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}
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dirName = (char *)malloc((sizeof(char)*dirNameSize) + 1);
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if(dirName != NULL)
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{
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dirName[0] = '\0';
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for(int i(0); i < paramCount; i++)
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{
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strcat(dirName,client->_cmdParameters->getAt(i)->getString());
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if(i != paramCount-1)
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strcat(dirName," ");
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}
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#ifdef DEBUG_FTPS
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Serial.printf("dirName size : %d, dirName #%s#\n",dirNameSize,dirName);
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#endif
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if(strlen(dirName) > 8)
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dirName[8] = '\0';
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//We have the dir name, we need to append the current directory...
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uint16_t pathDirNameLength = strlen(dirName) + strlen(client->_currentDirectory) + /*If we need to add a /*/ (strcmp(client->_currentDirectory,"/") == 0 ? 0 : 1) + 1; //for \0
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char *pathWithDirName = (char *)malloc(sizeof(char) * pathDirNameLength);
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sprintf(pathWithDirName,"%s%s%s",client->_currentDirectory, strcmp(client->_currentDirectory,"/") == 0 ? "" : "/", dirName);
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#ifdef DEBUG_FTPS
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Serial.printf("Final dirName and path #%s# #%s# size %d\n",dirName, pathWithDirName, pathDirNameLength);
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#endif
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if(_sdCardManager->mkdir(strupr(pathWithDirName)))
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{
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client->_client.printf("257 \"%s\"\r\n", pathWithDirName);
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}
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else
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client->_client.println("550 Failed to mkdir (no spaces allowed in dir name).");
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free(pathWithDirName);
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free(dirName);
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}
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else
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{
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client->_client.println("550 Requested action not taken.");
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}
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}
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else
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{
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client->_client.println("550 Requested action not taken.");
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}
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}
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else if(strcmp(client->_ftpCommand, "RMD") == 0)
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{
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if (client->_cmdParameters->count() > 0)
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{
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//We have the dir name, we need to append the current directory...
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uint16_t pathDirNameLength = strlen(client->_cmdParameters->getAt(0)->getString()) + strlen(client->_currentDirectory) + /*If we need to add a /*/ (strcmp(client->_currentDirectory,"/") == 0 ? 0 : 1) + 1; //for \0
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char *pathWithDirName = (char *)malloc(sizeof(char) * pathDirNameLength);
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sprintf(pathWithDirName,"%s%s%s",client->_currentDirectory, strcmp(client->_currentDirectory,"/") == 0 ? "" : "/", client->_cmdParameters->getAt(0)->getString());
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#ifdef DEBUG_FTPS
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Serial.printf("pathDirName to delete : #%s#\n",pathWithDirName);
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#endif
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if(_sdCardManager->rmdir(pathWithDirName))
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{
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client->_client.println("250 Requested file action okay.");
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}
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else
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{
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client->_client.println("550 Requested action not taken.");
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}
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free(pathWithDirName);
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}
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else
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{
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client->_client.println("550 Requested action not taken.");
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}
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}
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else if(strcmp(client->_ftpCommand, "STOR") == 0)
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{
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if (client->_cmdParameters->count() > 0)
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{
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//We save the file path to be sent
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client->_client.println("150 File status okay; about to open data connection.");
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char *temp = (char *)malloc((sizeof(char) * strlen(client->_currentDirectory)) + (sizeof(char) * strlen(_83FileNameFormat(client->_cmdParameters->getAt(0)->getString()))) + (strcmp(client->_currentDirectory,"/") == 0 ? 0 : 1) + 1);
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strcpy(temp, client->_currentDirectory);
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if(strcmp(client->_currentDirectory,"/") != 0 )strcat(temp, "/");
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strcat(temp, client->_cmdParameters->getAt(0)->getString());
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client->setCurrentFile(temp);
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#ifdef DEBUG_FTPS
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Serial.printf("File to store : %s\n", client->_currentFile);
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#endif
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free(temp);
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client->_dataTransferPending = STOR_DF;
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}
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}
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else if(strcmp(client->_ftpCommand, "SYST") == 0)
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{
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client->_client.println("215 UNIX Type: L8");
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}
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else if(strcmp(client->_ftpCommand, "DELE") == 0)
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{
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if (client->_cmdParameters->count() > 0)
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{
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//We have the dir name, we need to append the current directory...
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uint16_t pathDirNameLength = strlen(client->_cmdParameters->getAt(0)->getString()) + strlen(client->_currentDirectory) + /*If we need to add a /*/ (strcmp(client->_currentDirectory,"/") == 0 ? 0 : 1) + 1; //for \0
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char *pathWithDirName = (char *)malloc(sizeof(char) * pathDirNameLength);
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sprintf(pathWithDirName,"%s%s%s",client->_currentDirectory, strcmp(client->_currentDirectory,"/") == 0 ? "" : "/", client->_cmdParameters->getAt(0)->getString());
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#ifdef DEBUG_FTPS
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Serial.printf("file to delete : #%s#\n",pathWithDirName);
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#endif
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if(_sdCardManager->remove(pathWithDirName))
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{
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client->_client.println("250 Requested file action okay.");
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}
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else
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{
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client->_client.println("550 Requested action not taken.");
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}
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free(pathWithDirName);
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}
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else
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{
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client->_client.println("550 Requested action not taken.");
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}
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}
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else
|
|
client->_client.println("502 Command not implemented.");
|
|
}
|
|
|
|
//Here we write the received file to the sd card
|
|
boolean writeToSdCard(T *client, FileTransferStatus *fts)
|
|
{
|
|
if (client->_currentFile != NULL)
|
|
{
|
|
if(_sdCardManager->exists(client->_currentFile) && client->_fileRecvBytes == 0)
|
|
_sdCardManager->remove(client->_currentFile);
|
|
|
|
File fileBeeingReceived = _sdCardManager->open(client->_currentFile, FILE_WRITE);
|
|
|
|
if(fileBeeingReceived)
|
|
{
|
|
char recvBuffer[1024];
|
|
|
|
/*fileBeeingReceived.seek(client->_fileRecvBytes);*/
|
|
uint16_t size = client->_dataClient.read((uint8_t *)recvBuffer, 1024);
|
|
|
|
fileBeeingReceived.write(recvBuffer, size);
|
|
|
|
client->_fileRecvBytes += size;
|
|
fileBeeingReceived.close();
|
|
#ifdef DEBUG_FTPS
|
|
Serial.println("File beeing written");
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
*fts = NO_FILE_NAME;
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
//Here we send the fs tree to the ftp client
|
|
boolean sendFSTree(T *client)
|
|
{
|
|
if (client->_currentDirectory != NULL)
|
|
{
|
|
#ifdef DEBUG_FTPS
|
|
Serial.printf("Directory : %s\n",client->_currentDirectory);
|
|
#endif
|
|
File currentDirectory = _sdCardManager->open(client->_currentDirectory);
|
|
currentDirectory.rewindDirectory();
|
|
if (currentDirectory)
|
|
{
|
|
while (true) //Maybe be remove in the future to improve responsiveness
|
|
{
|
|
File fileOrDir = currentDirectory.openNextFile();
|
|
|
|
if (!fileOrDir) //No more files in the directory
|
|
break;
|
|
|
|
#ifdef DEBUG_FTPS
|
|
Serial.printf("Filename : %s\n", fileOrDir.name());
|
|
#endif
|
|
|
|
client->_dataClient.printf("%crwxrwxrwx 1 owner esp8266 %d Aug 26 16:31 %s\r\n", fileOrDir.isDirectory() ? 'd' : '-', fileOrDir.isDirectory() ? 0 : fileOrDir.size(), fileOrDir.name());
|
|
|
|
fileOrDir.close();
|
|
}
|
|
|
|
currentDirectory.close();
|
|
}
|
|
else //Failed to open directory
|
|
{
|
|
#ifdef DEBUG_FTPS
|
|
Serial.println("Failed to open directory");
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
//The binary flag needs to be taken into consideration
|
|
boolean sendFile(T *client, FileTransferStatus *fts)
|
|
{
|
|
if (client->_currentFile != NULL)
|
|
{
|
|
char sendBuffer[READ_WRITE_BUFFER_SIZE];
|
|
File fileToSend = _sdCardManager->open(client->_currentFile);
|
|
|
|
if (fileToSend)
|
|
{
|
|
*fts = OK;
|
|
unsigned int readBytes(0);
|
|
fileToSend.seek(client->_fileSentBytes);
|
|
|
|
if(fileToSend.available())
|
|
{
|
|
readBytes = fileToSend.read(sendBuffer, READ_WRITE_BUFFER_SIZE);
|
|
client->_dataClient.write(sendBuffer, readBytes);
|
|
|
|
client->_fileSentBytes += readBytes;
|
|
|
|
#ifdef DEBUG_FTPS
|
|
Serial.printf("File : bytes sent : %u\n",readBytes);
|
|
#endif
|
|
}
|
|
else //The whole file has been sent
|
|
{
|
|
fileToSend.close();
|
|
client->_fileSentBytes = 0;
|
|
return false;
|
|
}
|
|
|
|
fileToSend.close();
|
|
}
|
|
else //Failed to open file maybe not found
|
|
{
|
|
#ifdef DEBUG_FTPS
|
|
Serial.println("Failed to open file");
|
|
#endif
|
|
*fts = NOT_FOUND;
|
|
return false;
|
|
}
|
|
|
|
return true;//Still things to send
|
|
}
|
|
|
|
*fts = NOT_FOUND;
|
|
return false;
|
|
}
|
|
|
|
char *_83FileNameFormat(char *filename)
|
|
{
|
|
char *buffer = (char *)malloc((sizeof(char) * strlen(filename)) + 1);
|
|
strcpy(buffer, filename);
|
|
char *delimiter = strchr(buffer, '.');
|
|
if(delimiter != NULL)
|
|
{
|
|
*delimiter = '\0';
|
|
|
|
if(strlen(buffer) > 8)
|
|
buffer[8] = '\0';
|
|
|
|
strcpy(filename, buffer);
|
|
|
|
if(strlen(delimiter + 1) > 3)
|
|
*(delimiter + 1 + 3) = '\0';
|
|
|
|
strcat(filename, ".");
|
|
strcat(filename, delimiter + 1);
|
|
}
|
|
else
|
|
{
|
|
if(strlen(buffer) > 8)
|
|
{
|
|
buffer[8] = '\0';
|
|
}
|
|
strcpy(filename, buffer);
|
|
}
|
|
free(buffer);
|
|
return filename;
|
|
}
|
|
|
|
char *_login;
|
|
char *_password;
|
|
unsigned int _dataPort;
|
|
|
|
WiFiServer _dataServer; //In passive mode, the FTP server opens two different ports (one for the commands and the other for the data stream)
|
|
SDCardManager *_sdCardManager;
|
|
};
|
|
|
|
#endif //FTPSERVER_H
|