mirror of
https://github.com/kingk85/uFTP.git
synced 2025-07-15 00:06:12 +03:00
1132 lines
41 KiB
C
1132 lines
41 KiB
C
/*
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* The MIT License
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*
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* Copyright 2018 Ugo Cirmignani.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <pthread.h>
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#include "ftpServer.h"
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#include "ftpCommandsElaborate.h"
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#include "ftpData.h"
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#include "library/logFunctions.h"
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#include "library/fileManagement.h"
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/* Elaborate the User login command */
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int parseCommandUser(clientDataType *theClientData)
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{
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char *theName;
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theName = getFtpCommandArg("USER", theClientData->theCommandReceived);
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printTimeStamp();
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printf("The Name: %s", theName);
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if (strlen(theName) >= 1)
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{
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char *theResponse = "331 User ok, Waiting for the password.\r\n";
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setDynamicStringDataType(&theClientData->login.name, theName, strlen(theName));
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write(theClientData->socketDescriptor, theResponse, strlen(theResponse));
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printf("\nUSER COMMAND OK, USERNAME IS: %s", theClientData->login.name.text);
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return 1;
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}
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else
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{
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char *theResponse = "430 Invalid username.\r\n";
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write(theClientData->socketDescriptor, theResponse, strlen(theResponse));
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return 1;
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}
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}
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/* Elaborate the User login command */
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int parseCommandSite(clientDataType *theClientData)
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{
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char *theCommand;
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theCommand = getFtpCommandArg("SITE", theClientData->theCommandReceived);
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printTimeStamp();
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printf("\ntheCommand:%s", theCommand);
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if(strncmp(theCommand, "CHMOD", strlen("CHMOD")) == 0 ||
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strncmp(theCommand, "chmod", strlen("chmod")) == 0)
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{
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setPermissions(theCommand, theClientData->login.absolutePath.text);
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char *theResponse = "200 Permissions changed\r\n";
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write(theClientData->socketDescriptor, theResponse, strlen(theResponse));
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}
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else
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{
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char *theResponse = "500 unknown extension\r\n";
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write(theClientData->socketDescriptor, theResponse, strlen(theResponse));
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}
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//site chmod 777 test
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//200 Permissions changed on test
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//500 SITE ciao is an unknown extension
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}
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int parseCommandPass(ftpDataType * data, int socketId)
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{
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char *thePass;
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thePass = getFtpCommandArg("PASS", data->clients[socketId].theCommandReceived);
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printTimeStamp();
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printf("The Pass is: %s", thePass);
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if (strlen(thePass) >= 1)
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{
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int searchUserNameIndex;
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searchUserNameIndex = searchUser(data->clients[socketId].login.name.text, &data->ftpParameters.usersVector);
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if (searchUserNameIndex < 0 ||
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(strcmp(((usersParameters_DataType *) data->ftpParameters.usersVector.Data[searchUserNameIndex])->password, thePass) != 0))
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{
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char *theResponse = "430 Invalid username or password\r\n";
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write(data->clients[socketId].socketDescriptor, theResponse, strlen(theResponse));
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printf("\nLogin Error recorded no such username or password");
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}
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else
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{
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char *theResponse = "230 Login Ok.\r\n";
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setDynamicStringDataType(&data->clients[socketId].login.password, thePass, strlen(thePass));
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setDynamicStringDataType(&data->clients[socketId].login.absolutePath, ((usersParameters_DataType *) data->ftpParameters.usersVector.Data[searchUserNameIndex])->homePath, strlen(((usersParameters_DataType *) data->ftpParameters.usersVector.Data[searchUserNameIndex])->homePath));
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setDynamicStringDataType(&data->clients[socketId].login.homePath, ((usersParameters_DataType *) data->ftpParameters.usersVector.Data[searchUserNameIndex])->homePath, strlen(((usersParameters_DataType *) data->ftpParameters.usersVector.Data[searchUserNameIndex])->homePath));
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setDynamicStringDataType(&data->clients[socketId].login.ftpPath, "/", strlen("/"));
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data->clients[socketId].login.userLoggedIn = 1;
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write(data->clients[socketId].socketDescriptor, theResponse, strlen(theResponse));
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printTimeStamp();
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printf("PASS COMMAND OK, PASSWORD IS: %s", data->clients[socketId].login.password.text);
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printf("\nheClientData->login.homePath: %s", data->clients[socketId].login.homePath.text);
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printf("\nheClientData->login.ftpPath: %s", data->clients[socketId].login.ftpPath.text);
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printf("\nheClientData->login.absolutePath: %s", data->clients[socketId].login.absolutePath.text);
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}
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return 1;
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}
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else
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{
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char *theResponse = "430 Invalid username or password\r\n";
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write(data->clients[socketId].socketDescriptor, theResponse, strlen(theResponse));
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return 1;
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}
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}
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int parseCommandAuth(clientDataType *theClientData)
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{
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char *theAuth;
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theAuth = getFtpCommandArg("AUTH", theClientData->theCommandReceived);
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printTimeStamp();
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printf("The Auth is: %s", theAuth);
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char *theResponse = "502 Security extensions not implemented.\r\n";
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write(theClientData->socketDescriptor, theResponse, strlen(theResponse));
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return 1;
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}
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int parseCommandPwd(clientDataType *theClientData)
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{
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char thePwdResponse[FTP_COMMAND_ELABORATE_CHAR_BUFFER];
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memset(thePwdResponse, 0, FTP_COMMAND_ELABORATE_CHAR_BUFFER);
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sprintf(thePwdResponse, "257 \"%s\" is your current location\r\n", theClientData->login.ftpPath.text);
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write(theClientData->socketDescriptor, thePwdResponse, strlen(thePwdResponse));
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return 1;
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}
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int parseCommandSyst(clientDataType *theClientData)
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{
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char *theResponse = "215 UNIX Type: L8\r\n";
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write(theClientData->socketDescriptor, theResponse, strlen(theResponse));
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return 1;
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}
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int parseCommandFeat(clientDataType *theClientData)
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{
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/*
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211-Extensions supported:
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EPRT
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IDLE
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MDTM
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SIZE
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MFMT
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REST STREAM
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MLST type*;size*;sizd*;modify*;UNIX.mode*;UNIX.uid*;UNIX.gid*;unique*;
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MLSD
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AUTH TLS
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PBSZ
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PROT
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UTF8
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TVFS
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ESTA
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PASV
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EPSV
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SPSV
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ESTP
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211 End.
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*/
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char *theResponse = "211-Extensions supported:\r\n PASV\r\nUTF8\r\n211 End.\r\n";
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write(theClientData->socketDescriptor, theResponse, strlen(theResponse));
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return 1;
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}
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int parseCommandTypeA(clientDataType *theClientData)
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{
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char *theResponse = "200 TYPE is now 8-bit binary\r\n";
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write(theClientData->socketDescriptor, theResponse, strlen(theResponse));
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return 1;
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}
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int parseCommandTypeI(clientDataType *theClientData)
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{
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char *theResponse = "200 TYPE is now 8-bit binary\r\n";
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write(theClientData->socketDescriptor, theResponse, strlen(theResponse));
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return 1;
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}
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int parseCommandStruF(clientDataType *theClientData)
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{
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char *theResponse = "200 TYPE is now 8-bit binary\r\n";
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write(theClientData->socketDescriptor, theResponse, strlen(theResponse));
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return 1;
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}
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int parseCommandModeS(clientDataType *theClientData)
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{
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char *theResponse = "200 TYPE is now 8-bit binary\r\n";
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write(theClientData->socketDescriptor, theResponse, strlen(theResponse));
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return 1;
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}
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int parseCommandPasv(ftpDataType * data, int socketId)
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{
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/* Create worker thread */
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if (data->clients[socketId].workerData.threadIsAlive == 1)
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{
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void *pReturn;
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pthread_cancel(data->clients[socketId].workerData.workerThread);
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pthread_join(data->clients[socketId].workerData.workerThread, &pReturn);
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printf("\nThread has been cancelled.");
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}
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else
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{
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void *pReturn;
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pthread_join(data->clients[socketId].workerData.workerThread, &pReturn);
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}
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data->clients[socketId].workerData.passiveModeOn = 1;
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data->clients[socketId].workerData.activeModeOn = 0;
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pthread_create(&data->clients[socketId].workerData.workerThread, NULL, connectionWorkerHandle, (void *) &data->clients[socketId].clientProgressiveNumber);
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return 1;
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}
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int parseCommandPort(ftpDataType * data, int socketId)
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{
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char *theIpAndPort;
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int ipAddressBytes[4];
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int portBytes[2];
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theIpAndPort = getFtpCommandArg("PORT", data->clients[socketId].theCommandReceived);
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sscanf(theIpAndPort, "%d,%d,%d,%d,%d,%d", &ipAddressBytes[0], &ipAddressBytes[1], &ipAddressBytes[2], &ipAddressBytes[3], &portBytes[0], &portBytes[1]);
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printf("\ntheIpAndPort: %s", theIpAndPort);
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data->clients[socketId].workerData.connectionPort = (portBytes[0]*256)+portBytes[1];
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sprintf(data->clients[socketId].workerData.activeIpAddress, "%d.%d.%d.%d", ipAddressBytes[0],ipAddressBytes[1],ipAddressBytes[2],ipAddressBytes[3]);
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printf("\ndata->clients[socketId].workerData.connectionPort: %d", data->clients[socketId].workerData.connectionPort);
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printf("\ndata->clients[socketId].workerData.activeIpAddress: %s", data->clients[socketId].workerData.activeIpAddress);
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/* Create worker thread */
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if (data->clients[socketId].workerData.threadIsAlive == 1)
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{
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void *pReturn;
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pthread_cancel(data->clients[socketId].workerData.workerThread);
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pthread_join(data->clients[socketId].workerData.workerThread, &pReturn);
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printf("\nThread has been cancelled.");
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}
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else
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{
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void *pReturn;
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pthread_join(data->clients[socketId].workerData.workerThread, &pReturn);
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}
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data->clients[socketId].workerData.passiveModeOn = 0;
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data->clients[socketId].workerData.activeModeOn = 1;
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pthread_create(&data->clients[socketId].workerData.workerThread, NULL, connectionWorkerHandle, (void *) &data->clients[socketId].clientProgressiveNumber);
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return 1;
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}
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int parseCommandAbor(ftpDataType * data, int socketId)
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{
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char theResponse[FTP_COMMAND_ELABORATE_CHAR_BUFFER];
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/*
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426 ABORT
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226-Transfer aborted
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226 3.406 seconds (measured here), 1.58 Mbytes per second
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226 Since you see this ABOR must've succeeded
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*/
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if (data->clients[socketId].workerData.threadIsAlive == 1 &&
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data->clients[socketId].workerData.threadIsBusy == 1)
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{
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void *pReturn;
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pthread_cancel(data->clients[socketId].workerData.workerThread);
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pthread_join(data->clients[socketId].workerData.workerThread, &pReturn);
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printf("\nThread has been cancelled due to ABOR request.");
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memset(theResponse, 0, FTP_COMMAND_ELABORATE_CHAR_BUFFER);
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sprintf(theResponse, "426 ABORT\r\n");
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write(data->clients[socketId].socketDescriptor, theResponse, strlen(theResponse));
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memset(theResponse, 0, FTP_COMMAND_ELABORATE_CHAR_BUFFER);
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sprintf(theResponse, "226 Transfer aborted\r\n");
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write(data->clients[socketId].socketDescriptor, theResponse, strlen(theResponse));
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}
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else
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{
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memset(theResponse, 0, FTP_COMMAND_ELABORATE_CHAR_BUFFER);
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sprintf(theResponse, "226 Since you see this ABOR must've succeeded\r\n");
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write(data->clients[socketId].socketDescriptor, theResponse, strlen(theResponse));
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}
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return 1;
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}
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int parseCommandList(ftpDataType * data, int socketId)
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{
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/*
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-1 List one file per line
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-A List all files except "." and ".."
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-a List all files including those whose names start with "."
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-C List entries by columns
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-d List directory entries instead of directory contents
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-F Append file type indicator (one of "*", "/", "=", "@" or "|") to names
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-h Print file sizes in human-readable format (e.g. 1K, 234M, 2G)
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-L List files pointed to by symlinks
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-l Use a long listing format
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-n List numeric UIDs/GIDs instead of user/group names
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-R List subdirectories recursively
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-r Sort filenames in reverse order
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-S Sort by file size
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-t Sort by modification time
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*/
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int isSafePath = 0;
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char *theNameToList;
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theNameToList = getFtpCommandArg("LIST", data->clients[socketId].theCommandReceived);
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getFtpCommandArgWithOptions("LIST", data->clients[socketId].theCommandReceived, &data->clients[socketId].workerData.ftpCommand);
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printf("\nLIST COMMAND ARG: %s", data->clients[socketId].workerData.ftpCommand.commandArgs.text);
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printf("\nLIST COMMAND OPS: %s", data->clients[socketId].workerData.ftpCommand.commandOps.text);
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cleanDynamicStringDataType(&data->clients[socketId].workerData.ftpCommand.commandArgs, 0);
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cleanDynamicStringDataType(&data->clients[socketId].workerData.ftpCommand.commandOps, 0);
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cleanDynamicStringDataType(&data->clients[socketId].listPath, 0);
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if (strlen(theNameToList) > 0)
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{
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isSafePath = getSafePath(&data->clients[socketId].listPath, theNameToList, &data->clients[socketId].login);
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}
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if (isSafePath == 0)
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{
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cleanDynamicStringDataType(&data->clients[socketId].listPath, 0);
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setDynamicStringDataType(&data->clients[socketId].listPath, data->clients[socketId].login.absolutePath.text, data->clients[socketId].login.absolutePath.textLen);
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}
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pthread_mutex_lock(&data->clients[socketId].workerData.conditionMutex);
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memset(data->clients[socketId].workerData.theCommandReceived, 0, CLIENT_COMMAND_STRING_SIZE);
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strcpy(data->clients[socketId].workerData.theCommandReceived, data->clients[socketId].theCommandReceived);
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data->clients[socketId].workerData.commandReceived = 1;
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pthread_mutex_unlock(&data->clients[socketId].workerData.conditionMutex);
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pthread_cond_signal(&data->clients[socketId].workerData.conditionVariable);
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return 1;
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}
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int parseCommandNlst(ftpDataType * data, int socketId)
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{
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int isSafePath = 0;
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char *theNameToNlist;
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theNameToNlist = getFtpCommandArg("NLIST", data->clients[socketId].theCommandReceived);
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cleanDynamicStringDataType(&data->clients[socketId].nlistPath, 0);
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if (strlen(theNameToNlist) > 0)
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{
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isSafePath = getSafePath(&data->clients[socketId].nlistPath, theNameToNlist, &data->clients[socketId].login);
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}
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if (isSafePath == 0)
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{
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cleanDynamicStringDataType(&data->clients[socketId].nlistPath, 0);
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setDynamicStringDataType(&data->clients[socketId].nlistPath, data->clients[socketId].login.absolutePath.text, data->clients[socketId].login.absolutePath.textLen);
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}
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pthread_mutex_lock(&data->clients[socketId].workerData.conditionMutex);
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memset(data->clients[socketId].workerData.theCommandReceived, 0, CLIENT_COMMAND_STRING_SIZE);
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strcpy(data->clients[socketId].workerData.theCommandReceived, data->clients[socketId].theCommandReceived);
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data->clients[socketId].workerData.commandReceived = 1;
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pthread_mutex_unlock(&data->clients[socketId].workerData.conditionMutex);
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pthread_cond_signal(&data->clients[socketId].workerData.conditionVariable);
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return 1;
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}
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int parseCommandRetr(ftpDataType * data, int socketId)
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{
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int isSafePath = 0;
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char *theNameToRetr;
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theNameToRetr = getFtpCommandArg("RETR", data->clients[socketId].theCommandReceived);
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cleanDynamicStringDataType(&data->clients[socketId].fileToRetr, 0);
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if (strlen(theNameToRetr) > 0)
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{
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isSafePath = getSafePath(&data->clients[socketId].fileToRetr, theNameToRetr, &data->clients[socketId].login);
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}
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if (isSafePath == 1 &&
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FILE_IsFile(data->clients[socketId].fileToRetr.text) == 1)
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{
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pthread_mutex_lock(&data->clients[socketId].workerData.conditionMutex);
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memset(data->clients[socketId].workerData.theCommandReceived, 0, CLIENT_COMMAND_STRING_SIZE);
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strcpy(data->clients[socketId].workerData.theCommandReceived, data->clients[socketId].theCommandReceived);
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data->clients[socketId].workerData.commandReceived = 1;
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pthread_mutex_unlock(&data->clients[socketId].workerData.conditionMutex);
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pthread_cond_signal(&data->clients[socketId].workerData.conditionVariable);
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return 1;
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}
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else
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{
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return 0;
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}
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return 1;
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}
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int parseCommandStor(ftpDataType * data, int socketId)
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{
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int isSafePath = 0;
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char *theNameToStor;
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theNameToStor = getFtpCommandArg("STOR", data->clients[socketId].theCommandReceived);
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cleanDynamicStringDataType(&data->clients[socketId].fileToStor, 0);
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if (strlen(theNameToStor) > 0)
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{
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isSafePath = getSafePath(&data->clients[socketId].fileToStor, theNameToStor, &data->clients[socketId].login);
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}
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if (isSafePath == 1)
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{
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pthread_mutex_lock(&data->clients[socketId].workerData.conditionMutex);
|
|
printf("data->clients[%d].fileToStor = %s", socketId, data->clients[socketId].fileToStor.text);
|
|
memset(data->clients[socketId].workerData.theCommandReceived, 0, CLIENT_COMMAND_STRING_SIZE);
|
|
strcpy(data->clients[socketId].workerData.theCommandReceived, data->clients[socketId].theCommandReceived);
|
|
data->clients[socketId].workerData.commandReceived = 1;
|
|
pthread_mutex_unlock(&data->clients[socketId].workerData.conditionMutex);
|
|
pthread_cond_signal(&data->clients[socketId].workerData.conditionVariable);
|
|
}
|
|
else
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
int parseCommandCwd(clientDataType *theClientData)
|
|
{
|
|
dynamicStringDataType absolutePathPrevious, ftpPathPrevious, theSafePath;
|
|
int isSafePath;
|
|
char *thePath;
|
|
char *theResponse;
|
|
|
|
cleanDynamicStringDataType(&absolutePathPrevious, 1);
|
|
cleanDynamicStringDataType(&ftpPathPrevious, 1);
|
|
cleanDynamicStringDataType(&theSafePath, 1);
|
|
|
|
thePath = getFtpCommandArg("CWD", theClientData->theCommandReceived);
|
|
|
|
if (strlen(thePath) > 0)
|
|
{
|
|
isSafePath = getSafePath(&theSafePath, thePath, &theClientData->login);
|
|
}
|
|
|
|
if (isSafePath == 1)
|
|
{
|
|
printf("\n The Path requested for CWD IS:%s", theSafePath.text);
|
|
setDynamicStringDataType(&absolutePathPrevious, theClientData->login.absolutePath.text, theClientData->login.absolutePath.textLen);
|
|
setDynamicStringDataType(&ftpPathPrevious, theClientData->login.ftpPath.text, theClientData->login.ftpPath.textLen);
|
|
|
|
if (theSafePath.text[0] != '/')
|
|
{
|
|
if (theClientData->login.absolutePath.text[theClientData->login.absolutePath.textLen-1] != '/')
|
|
appendToDynamicStringDataType(&theClientData->login.absolutePath, "/", 1);
|
|
|
|
if (theClientData->login.ftpPath.text[theClientData->login.ftpPath.textLen-1] != '/')
|
|
appendToDynamicStringDataType(&theClientData->login.ftpPath, "/", 1);
|
|
|
|
appendToDynamicStringDataType(&theClientData->login.absolutePath, theSafePath.text, theSafePath.textLen);
|
|
appendToDynamicStringDataType(&theClientData->login.ftpPath, theSafePath.text, theSafePath.textLen);
|
|
}
|
|
else if (theSafePath.text[0] == '/')
|
|
{
|
|
cleanDynamicStringDataType(&theClientData->login.ftpPath, 0);
|
|
cleanDynamicStringDataType(&theClientData->login.absolutePath, 0);
|
|
|
|
setDynamicStringDataType(&theClientData->login.ftpPath, theSafePath.text, theSafePath.textLen);
|
|
setDynamicStringDataType(&theClientData->login.absolutePath, theClientData->login.homePath.text, theClientData->login.homePath.textLen);
|
|
|
|
if (strlen(theSafePath.text)> 0)
|
|
{
|
|
char *theDirPointer = theSafePath.text;
|
|
|
|
if (theClientData->login.absolutePath.text[theClientData->login.absolutePath.textLen-1] == '/')
|
|
{
|
|
while(theDirPointer[0] == '/')
|
|
theDirPointer++;
|
|
}
|
|
|
|
if (strlen(theDirPointer) > 0)
|
|
appendToDynamicStringDataType(&theClientData->login.absolutePath, theDirPointer, strlen(theDirPointer));
|
|
}
|
|
}
|
|
|
|
if (FILE_IsDirectory(theClientData->login.absolutePath.text) == 1)
|
|
{
|
|
printf("\nDirectory ok found, theClientData->login.ftpPath.text = %s", theClientData->login.ftpPath.text);
|
|
int theSizeToMalloc = strlen("250 OK. Current directory is ")+theClientData->login.ftpPath.textLen+1;
|
|
theResponse = (char *) malloc (theSizeToMalloc);
|
|
memset(theResponse, 0, theSizeToMalloc);
|
|
strcpy(theResponse, "250 OK. Current directory is ");
|
|
strcat(theResponse, theClientData->login.ftpPath.text);
|
|
}
|
|
else
|
|
{
|
|
printf("\n%s does not exist", theClientData->login.absolutePath.text);
|
|
setDynamicStringDataType(&theClientData->login.absolutePath, absolutePathPrevious.text, absolutePathPrevious.textLen);
|
|
setDynamicStringDataType(&theClientData->login.ftpPath, ftpPathPrevious.text, ftpPathPrevious.textLen);
|
|
int theSizeToMalloc = strlen("550 Can't change directory to : No such file or directory")+10+strlen(theClientData->login.ftpPath.text);
|
|
theResponse = (char *) malloc (theSizeToMalloc);
|
|
memset(theResponse, 0, theSizeToMalloc);
|
|
strcpy(theResponse, "550 Can't change directory to ");
|
|
strcat(theResponse, theClientData->login.ftpPath.text);
|
|
strcat(theResponse, ": No such file or directory");
|
|
}
|
|
|
|
FILE_AppendToString(&theResponse, " \r\n");
|
|
|
|
write(theClientData->socketDescriptor, theResponse, strlen(theResponse));
|
|
printTimeStamp();
|
|
printf("\nCwd response : %s", theResponse);
|
|
printf("\nUSER COMMAND OK, NEW PATH IS: %s", theClientData->login.absolutePath.text);
|
|
printf("\nUSER COMMAND OK, NEW LOCAL PATH IS: %s", theClientData->login.ftpPath.text);
|
|
|
|
cleanDynamicStringDataType(&absolutePathPrevious, 0);
|
|
cleanDynamicStringDataType(&ftpPathPrevious, 0);
|
|
cleanDynamicStringDataType(&theSafePath, 0);
|
|
free(theResponse);
|
|
return 1;
|
|
}
|
|
else
|
|
{
|
|
cleanDynamicStringDataType(&absolutePathPrevious, 0);
|
|
cleanDynamicStringDataType(&ftpPathPrevious, 0);
|
|
cleanDynamicStringDataType(&theSafePath, 0);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
int parseCommandRest(clientDataType *theClientData)
|
|
{
|
|
int i, theSizeIndex;
|
|
char theSize[FTP_COMMAND_ELABORATE_CHAR_BUFFER];
|
|
memset(theSize, 0, FTP_COMMAND_ELABORATE_CHAR_BUFFER);
|
|
theSizeIndex = 0;
|
|
|
|
char *theResponse;
|
|
theResponse = (char *) malloc (strlen("350 Restarting at ")+1);
|
|
strcpy(theResponse, "350 Restarting at ");
|
|
|
|
for (i = strlen("REST")+1; i < theClientData->commandIndex; i++)
|
|
{
|
|
if (theClientData->theCommandReceived[i] == '\r' ||
|
|
theClientData->theCommandReceived[i] == '\0' ||
|
|
theClientData->theCommandReceived[i] == '\n')
|
|
{
|
|
break;
|
|
}
|
|
|
|
if (theSizeIndex < FTP_COMMAND_ELABORATE_CHAR_BUFFER &&
|
|
(theClientData->theCommandReceived[i] == '0' ||
|
|
theClientData->theCommandReceived[i] == '1' ||
|
|
theClientData->theCommandReceived[i] == '2' ||
|
|
theClientData->theCommandReceived[i] == '3' ||
|
|
theClientData->theCommandReceived[i] == '4' ||
|
|
theClientData->theCommandReceived[i] == '5' ||
|
|
theClientData->theCommandReceived[i] == '6' ||
|
|
theClientData->theCommandReceived[i] == '7' ||
|
|
theClientData->theCommandReceived[i] == '8' ||
|
|
theClientData->theCommandReceived[i] == '9' ))
|
|
{
|
|
theSize[theSizeIndex++] = theClientData->theCommandReceived[i];
|
|
}
|
|
}
|
|
|
|
printTimeStamp();
|
|
printf(" REST set to: %s", theSize);
|
|
fflush(0);
|
|
|
|
FILE_AppendToString(&theResponse, theSize);
|
|
FILE_AppendToString(&theResponse, " \r\n");
|
|
theClientData->workerData.retrRestartAtByte = atoll(theSize);
|
|
write(theClientData->socketDescriptor, theResponse, strlen(theResponse));
|
|
free(theResponse);
|
|
|
|
return 1;
|
|
}
|
|
|
|
int parseCommandMkd(clientDataType *theClientData)
|
|
{
|
|
int isSafePath;
|
|
char *theDirectoryFilename;
|
|
dynamicStringDataType theResponse;
|
|
dynamicStringDataType mkdFileName;
|
|
|
|
theDirectoryFilename = getFtpCommandArg("MKD", theClientData->theCommandReceived);
|
|
|
|
cleanDynamicStringDataType(&theResponse, 1);
|
|
cleanDynamicStringDataType(&mkdFileName, 1);
|
|
|
|
isSafePath = getSafePath(&mkdFileName, theDirectoryFilename, &theClientData->login);
|
|
|
|
if (isSafePath == 1)
|
|
{
|
|
int returnStatus;
|
|
printf("\nThe directory to make is: %s", mkdFileName.text);
|
|
returnStatus = mkdir(mkdFileName.text, S_IRWXU | S_IRWXG | S_IRWXO);
|
|
setDynamicStringDataType(&theResponse, "257 \"", strlen("257 \""));
|
|
appendToDynamicStringDataType(&theResponse, theDirectoryFilename, strlen(theDirectoryFilename));
|
|
appendToDynamicStringDataType(&theResponse, "\" : The directory was successfully created\r\n", strlen("\" : The directory was successfully created\r\n"));
|
|
write(theClientData->socketDescriptor, theResponse.text, theResponse.textLen);
|
|
}
|
|
else
|
|
{
|
|
cleanDynamicStringDataType(&theResponse, 0);
|
|
cleanDynamicStringDataType(&mkdFileName, 0);
|
|
return 0;
|
|
}
|
|
|
|
cleanDynamicStringDataType(&theResponse, 0);
|
|
cleanDynamicStringDataType(&mkdFileName, 0);
|
|
return 1;
|
|
}
|
|
|
|
int parseCommandOpts(clientDataType *theClientData)
|
|
{
|
|
char *theCommand;
|
|
theCommand = getFtpCommandArg("OPTS", theClientData->theCommandReceived);
|
|
printf("\nThe command received: %s", theCommand);
|
|
char *theResponse = "200 OK\r\n";
|
|
write(theClientData->socketDescriptor, theResponse, strlen(theResponse));
|
|
return 1;
|
|
}
|
|
|
|
int parseCommandDele(clientDataType *theClientData)
|
|
{
|
|
int isSafePath;
|
|
int returnStatus = 0;
|
|
char *theFileToDelete;
|
|
dynamicStringDataType theResponse;
|
|
dynamicStringDataType deleFileName;
|
|
|
|
theFileToDelete = getFtpCommandArg("DELE", theClientData->theCommandReceived);
|
|
|
|
cleanDynamicStringDataType(&theResponse, 1);
|
|
cleanDynamicStringDataType(&deleFileName, 1);
|
|
|
|
isSafePath = getSafePath(&deleFileName, theFileToDelete, &theClientData->login);
|
|
|
|
if (isSafePath == 1)
|
|
{
|
|
printf("\nThe file to delete is: %s", deleFileName.text);
|
|
returnStatus = remove(deleFileName.text);
|
|
setDynamicStringDataType(&theResponse, "250 Deleted ", strlen("250 Deleted "));
|
|
appendToDynamicStringDataType(&theResponse, theFileToDelete, strlen(theFileToDelete));
|
|
appendToDynamicStringDataType(&theResponse, "\r\n", strlen("\r\n"));
|
|
write(theClientData->socketDescriptor, theResponse.text, theResponse.textLen);
|
|
}
|
|
else
|
|
{
|
|
cleanDynamicStringDataType(&theResponse, 0);
|
|
cleanDynamicStringDataType(&deleFileName, 0);
|
|
return 0;
|
|
}
|
|
|
|
|
|
cleanDynamicStringDataType(&theResponse, 0);
|
|
cleanDynamicStringDataType(&deleFileName, 0);
|
|
return 1;
|
|
}
|
|
|
|
int parseCommandNoop(clientDataType *theClientData)
|
|
{
|
|
//200 Zzz...
|
|
char *theResponse = "200 Zzz...\r\n";
|
|
write(theClientData->socketDescriptor, theResponse, strlen(theResponse));
|
|
return 1;
|
|
}
|
|
|
|
int notLoggedInMessage(clientDataType *theClientData)
|
|
{
|
|
char *theResponse = "530 You aren't logged in\r\n";
|
|
write(theClientData->socketDescriptor, theResponse, strlen(theResponse));
|
|
return 1;
|
|
}
|
|
|
|
int parseCommandQuit(ftpDataType * data, int socketId)
|
|
{
|
|
char *theResponse = "221 Logout.\r\n";
|
|
write(data->clients[socketId].socketDescriptor, theResponse, strlen(theResponse));
|
|
data->clients[socketId].closeTheClient = 1;
|
|
return 1;
|
|
}
|
|
|
|
int parseCommandRmd(clientDataType *theClientData)
|
|
{
|
|
int isSafePath;
|
|
int returnStatus = 0;
|
|
char *theDirectoryFilename;
|
|
dynamicStringDataType theResponse;
|
|
dynamicStringDataType rmdFileName;
|
|
|
|
theDirectoryFilename = getFtpCommandArg("RMD", theClientData->theCommandReceived);
|
|
|
|
cleanDynamicStringDataType(&theResponse, 1);
|
|
cleanDynamicStringDataType(&rmdFileName, 1);
|
|
|
|
isSafePath = getSafePath(&rmdFileName, theDirectoryFilename, &theClientData->login);
|
|
|
|
if (isSafePath == 1)
|
|
{
|
|
printf("\nThe directory to delete is: %s", rmdFileName.text);
|
|
returnStatus = rmdir(rmdFileName.text);
|
|
setDynamicStringDataType(&theResponse, "250 The directory was successfully removed\r\n", strlen("250 The directory was successfully removed\r\n"));
|
|
write(theClientData->socketDescriptor, theResponse.text, theResponse.textLen);
|
|
}
|
|
else
|
|
{
|
|
cleanDynamicStringDataType(&theResponse, 0);
|
|
cleanDynamicStringDataType(&rmdFileName, 0);
|
|
return 0;
|
|
}
|
|
|
|
cleanDynamicStringDataType(&theResponse, 0);
|
|
cleanDynamicStringDataType(&rmdFileName, 0);
|
|
|
|
return 1;
|
|
}
|
|
|
|
int parseCommandSize(clientDataType *theClientData)
|
|
{
|
|
int isSafePath;
|
|
unsigned long long int theSize;
|
|
char *theFileName;
|
|
dynamicStringDataType theResponse;
|
|
dynamicStringDataType getSizeFromFileName;
|
|
|
|
theFileName = getFtpCommandArg("SIZE", theClientData->theCommandReceived);
|
|
|
|
cleanDynamicStringDataType(&theResponse, 1);
|
|
cleanDynamicStringDataType(&getSizeFromFileName, 1);
|
|
|
|
isSafePath = getSafePath(&getSizeFromFileName, theFileName, &theClientData->login);
|
|
|
|
|
|
if (isSafePath == 1)
|
|
{
|
|
printf("\nThe file to get the size is: %s", getSizeFromFileName.text);
|
|
|
|
if (FILE_IsFile(getSizeFromFileName.text)==1)
|
|
{
|
|
char theFileSizeResponse[2014];
|
|
memset(theFileSizeResponse, 0 ,1024);
|
|
|
|
theSize = FILE_GetFileSizeFromPath(getSizeFromFileName.text);
|
|
sprintf(theFileSizeResponse, "213 %lld\r\n", theSize);
|
|
setDynamicStringDataType(&theResponse, theFileSizeResponse, strlen(theFileSizeResponse));
|
|
}
|
|
else
|
|
{
|
|
setDynamicStringDataType(&theResponse, "550 Can't check for file existence\r\n", strlen("550 Can't check for file existence\r\n"));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
setDynamicStringDataType(&theResponse, "550 Can't check for file existence\r\n", strlen("550 Can't check for file existence\r\n"));
|
|
}
|
|
|
|
write(theClientData->socketDescriptor, theResponse.text, theResponse.textLen);
|
|
cleanDynamicStringDataType(&theResponse, 0);
|
|
cleanDynamicStringDataType(&getSizeFromFileName, 0);
|
|
|
|
return 1;
|
|
}
|
|
|
|
int parseCommandRnfr(clientDataType *theClientData)
|
|
{
|
|
int isSafePath;
|
|
char *theRnfrFileName;
|
|
dynamicStringDataType theResponse;
|
|
|
|
theRnfrFileName = getFtpCommandArg("RNFR", theClientData->theCommandReceived);
|
|
cleanDynamicStringDataType(&theClientData->renameFromFile, 0);
|
|
cleanDynamicStringDataType(&theResponse, 1);
|
|
|
|
isSafePath = getSafePath(&theClientData->renameFromFile, theRnfrFileName, &theClientData->login);
|
|
|
|
if (isSafePath == 1&&
|
|
(FILE_IsFile(theClientData->renameFromFile.text) == 1 ||
|
|
FILE_IsDirectory(theClientData->renameFromFile.text) == 1))
|
|
{
|
|
printf("\nThe file to check is: %s", theClientData->renameFromFile.text);
|
|
|
|
if (FILE_IsFile(theClientData->renameFromFile.text) == 1 ||
|
|
FILE_IsDirectory(theClientData->renameFromFile.text) == 1)
|
|
{
|
|
setDynamicStringDataType(&theResponse, "350 RNFR accepted - file exists, ready for destination\r\n", strlen("350 RNFR accepted - file exists, ready for destination\r\n"));
|
|
}
|
|
else
|
|
{
|
|
setDynamicStringDataType(&theResponse, "550 Sorry, but that file doesn't exist\r\n", strlen("550 Sorry, but that file doesn't exist\r\n"));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
setDynamicStringDataType(&theResponse, "550 Sorry, but that file doesn't exist\r\n", strlen("550 Sorry, but that file doesn't exist\r\n"));
|
|
}
|
|
|
|
write(theClientData->socketDescriptor, theResponse.text, theResponse.textLen);
|
|
cleanDynamicStringDataType(&theResponse, 0);
|
|
return 1;
|
|
}
|
|
|
|
int parseCommandRnto(clientDataType *theClientData)
|
|
{
|
|
int isSafePath;
|
|
char *theRntoFileName;
|
|
dynamicStringDataType theResponse;
|
|
|
|
theRntoFileName = getFtpCommandArg("RNTO", theClientData->theCommandReceived);
|
|
cleanDynamicStringDataType(&theClientData->renameToFile, 0);
|
|
cleanDynamicStringDataType(&theResponse, 1);
|
|
|
|
isSafePath = getSafePath(&theClientData->renameToFile, theRntoFileName, &theClientData->login);
|
|
|
|
|
|
if (isSafePath == 1 &&
|
|
theClientData->renameFromFile.textLen > 0)
|
|
{
|
|
printf("\nThe file to check is: %s", theClientData->renameFromFile.text);
|
|
|
|
if (FILE_IsFile(theClientData->renameFromFile.text) == 1 ||
|
|
FILE_IsDirectory(theClientData->renameFromFile.text) == 1)
|
|
{
|
|
int returnCode = 0;
|
|
returnCode = rename (theClientData->renameFromFile.text, theClientData->renameToFile.text);
|
|
if (returnCode == 0)
|
|
{
|
|
setDynamicStringDataType(&theResponse, "250 File successfully renamed or moved\r\n", strlen("250 File successfully renamed or moved\r\n"));
|
|
}
|
|
else
|
|
{
|
|
setDynamicStringDataType(&theResponse, "503 Error Renaming the file\r\n", strlen("503 Error Renaming the file\r\n"));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
setDynamicStringDataType(&theResponse, "503 Need RNFR before RNTO\r\n", strlen("503 Need RNFR before RNTO\r\n"));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
setDynamicStringDataType(&theResponse, "503 Error Renaming the file\r\n", strlen("503 Need RNFR before RNTO\r\n"));
|
|
}
|
|
|
|
write(theClientData->socketDescriptor, theResponse.text, theResponse.textLen);
|
|
cleanDynamicStringDataType(&theResponse, 0);
|
|
return 1;
|
|
}
|
|
|
|
int parseCommandCdup(clientDataType *theClientData)
|
|
{
|
|
char *theResponse;
|
|
theResponse = (char *) malloc (strlen("250 OK. Current directory is ")+1);
|
|
strcpy(theResponse, "250 OK. Current directory is ");
|
|
|
|
FILE_DirectoryToParent(&theClientData->login.absolutePath.text);
|
|
FILE_DirectoryToParent(&theClientData->login.ftpPath.text);
|
|
theClientData->login.absolutePath.textLen = strlen(theClientData->login.absolutePath.text);
|
|
theClientData->login.ftpPath.textLen = strlen(theClientData->login.ftpPath.text);
|
|
|
|
if(strncmp(theClientData->login.absolutePath.text, theClientData->login.homePath.text, theClientData->login.homePath.textLen) != 0)
|
|
{
|
|
setDynamicStringDataType(&theClientData->login.absolutePath, theClientData->login.homePath.text, theClientData->login.homePath.textLen);
|
|
}
|
|
|
|
FILE_AppendToString(&theResponse, theClientData->login.ftpPath.text);
|
|
FILE_AppendToString(&theResponse, " \r\n");
|
|
|
|
write(theClientData->socketDescriptor, theResponse, strlen(theResponse));
|
|
printTimeStamp();
|
|
printf("USER COMMAND OK, NEW PATH IS: %s", theClientData->login.absolutePath.text);
|
|
printf("\nUSER COMMAND OK, NEW LOCAL PATH IS: %s", theClientData->login.ftpPath.text);
|
|
free(theResponse);
|
|
return 1;
|
|
}
|
|
|
|
int writeRetrFile(char * theFilename, int thePasvSocketConnection, int startFrom)
|
|
{
|
|
long int readen = 0;
|
|
long int toReturn = 0;
|
|
long int currentPosition = 0;
|
|
FILE *retrFP;
|
|
long long int theFileSize;
|
|
char buffer[FTP_COMMAND_ELABORATE_CHAR_BUFFER];
|
|
|
|
printf("\nOpening: %s", theFilename);
|
|
|
|
retrFP = fopen(theFilename, "rb");
|
|
if (retrFP == NULL)
|
|
{
|
|
fclose(retrFP);
|
|
return -1;
|
|
}
|
|
|
|
theFileSize = FILE_GetFileSize(retrFP);
|
|
|
|
if (startFrom > 0)
|
|
{
|
|
printf("\nSeek startFrom: %d", startFrom);
|
|
currentPosition = (long int) lseek(fileno(retrFP), startFrom, SEEK_SET);
|
|
printf("\nSeek result: %ld", currentPosition);
|
|
if (currentPosition == -1)
|
|
{
|
|
fclose(retrFP);
|
|
return toReturn;
|
|
}
|
|
}
|
|
|
|
while ((readen = (long int) fread(buffer, sizeof(char), FTP_COMMAND_ELABORATE_CHAR_BUFFER, retrFP)) > 0)
|
|
{
|
|
toReturn = toReturn + write(thePasvSocketConnection, buffer, readen);
|
|
}
|
|
|
|
printf("\n Bytes written: %ld", toReturn);
|
|
|
|
fclose(retrFP);
|
|
return toReturn;
|
|
}
|
|
|
|
char *getFtpCommandArg(char * theCommand, char *theCommandString)
|
|
{
|
|
char *toReturn = theCommandString + strlen(theCommand);
|
|
|
|
/* Pass spaces */
|
|
while (toReturn[0] == ' ')
|
|
{
|
|
toReturn += 1;
|
|
}
|
|
|
|
/* Skip eventual secondary arguments */
|
|
if (toReturn[0] == '-')
|
|
{
|
|
while (toReturn[0] != ' ' &&
|
|
toReturn[0] != '\r' &&
|
|
toReturn[0] != '\n' &&
|
|
toReturn[0] != 0)
|
|
{
|
|
toReturn += 1;
|
|
}
|
|
}
|
|
|
|
/* Pass spaces */
|
|
while (toReturn[0] == ' ')
|
|
{
|
|
toReturn += 1;
|
|
}
|
|
|
|
return toReturn;
|
|
}
|
|
|
|
int getFtpCommandArgWithOptions(char * theCommand, char *theCommandString, ftpCommandDataType *ftpCommand)
|
|
{
|
|
#define CASE_ARG_MAIN 0
|
|
#define CASE_ARG_SECONDARY 1
|
|
|
|
int i = 0;
|
|
int isSecondArg = 0;
|
|
char argMain[FTP_COMMAND_ELABORATE_CHAR_BUFFER];
|
|
char argSecondary[FTP_COMMAND_ELABORATE_CHAR_BUFFER];
|
|
memset (argMain, 0, FTP_COMMAND_ELABORATE_CHAR_BUFFER);
|
|
memset (argSecondary, 0, FTP_COMMAND_ELABORATE_CHAR_BUFFER);
|
|
|
|
int argMainIndex = 0;
|
|
int argSecondaryIndex = 0;
|
|
|
|
char *theCommandPointer = theCommandString;
|
|
theCommandPointer += strlen(theCommand);
|
|
|
|
/*Remove spaces*/
|
|
while (theCommandPointer[0] == ' ')
|
|
{
|
|
theCommandPointer += 1;
|
|
}
|
|
|
|
if (theCommandPointer[i] == '-')
|
|
{
|
|
isSecondArg = 1;
|
|
theCommandPointer++;
|
|
}
|
|
|
|
while (theCommandPointer[i] != '\r' &&
|
|
theCommandPointer[i] != '\n' &&
|
|
theCommandPointer[i] != 0)
|
|
{
|
|
switch(isSecondArg)
|
|
{
|
|
case CASE_ARG_MAIN:
|
|
{
|
|
if (argMainIndex < FTP_COMMAND_ELABORATE_CHAR_BUFFER)
|
|
argMain[argMainIndex++] = theCommandPointer[i];
|
|
i++;
|
|
}
|
|
break;
|
|
|
|
case CASE_ARG_SECONDARY:
|
|
{
|
|
if (theCommandPointer[i] != ' ')
|
|
{
|
|
if (argSecondaryIndex < FTP_COMMAND_ELABORATE_CHAR_BUFFER)
|
|
argSecondary[argSecondaryIndex++] = theCommandPointer[i];
|
|
i++;
|
|
}
|
|
else
|
|
{
|
|
isSecondArg = 0;
|
|
while (theCommandPointer[0] == ' ')
|
|
{
|
|
theCommandPointer += 1;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (argMainIndex > 0)
|
|
setDynamicStringDataType(&ftpCommand->commandArgs, argMain, argMainIndex);
|
|
|
|
if (argSecondaryIndex > 0)
|
|
setDynamicStringDataType(&ftpCommand->commandOps, argSecondary, argSecondaryIndex);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
int setPermissions(char * permissionsCommand, char * basePath)
|
|
{
|
|
#define STATUS_INCREASE 0
|
|
#define STATUS_PERMISSIONS 1
|
|
#define STATUS_LOCAL_PATH 2
|
|
|
|
int permissionsCommandCursor = 0;
|
|
|
|
int status = STATUS_INCREASE;
|
|
char thePermissionString[1024];
|
|
char theLocalPath[1024];
|
|
char theFinalCommand[2048];
|
|
memset(theLocalPath, 0, 1024);
|
|
memset(thePermissionString, 0, 1024);
|
|
memset(theFinalCommand, 0, 2048);
|
|
int thePermissionStringCursor = 0, theLocalPathCursor = 0;
|
|
|
|
while (permissionsCommand[permissionsCommandCursor] != '\r' &&
|
|
permissionsCommand[permissionsCommandCursor] != '\n' &&
|
|
permissionsCommand[permissionsCommandCursor] != '\0')
|
|
{
|
|
switch (status)
|
|
{
|
|
case STATUS_INCREASE:
|
|
if (permissionsCommandCursor == strlen("chmod"))
|
|
{
|
|
status = STATUS_PERMISSIONS;
|
|
}
|
|
break;
|
|
|
|
case STATUS_PERMISSIONS:
|
|
if (permissionsCommand[permissionsCommandCursor] == ' ')
|
|
{
|
|
status = STATUS_LOCAL_PATH;
|
|
break;
|
|
}
|
|
if (thePermissionStringCursor < 1024 )
|
|
thePermissionString[thePermissionStringCursor++] = permissionsCommand[permissionsCommandCursor];
|
|
break;
|
|
|
|
case STATUS_LOCAL_PATH:
|
|
if (theLocalPathCursor < 1024)
|
|
theLocalPath[theLocalPathCursor++] = permissionsCommand[permissionsCommandCursor];
|
|
break;
|
|
}
|
|
|
|
permissionsCommandCursor++;
|
|
}
|
|
|
|
printf("\n thePermissionString = %s ", thePermissionString);
|
|
printf("\n theLocalPathCursor = %s ", theLocalPath);
|
|
|
|
if (basePath[strlen(basePath)-1] != '/')
|
|
sprintf(theFinalCommand, "chmod %s %s/%s", thePermissionString, basePath, theLocalPath);
|
|
else
|
|
sprintf(theFinalCommand, "chmod %s %s%s", thePermissionString, basePath, theLocalPath);
|
|
|
|
printf("\n theFinalCommand = %s ", theFinalCommand);
|
|
|
|
system(theFinalCommand);
|
|
|
|
return 1;
|
|
} |