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libtdevnc/libvncserver/tightvnc-filetransfer/handlefiletransferrequest.c

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/*
* Copyright (c) 2005 Novell, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, contact Novell, Inc.
*
* To contact Novell about this file by physical or electronic mail,
* you may find current contact information at www.novell.com
*
* Author : Rohit Kumar
* Email ID : rokumar@novell.com
* Date : 14th July 2005
*/
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <dirent.h>
#include <pthread.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <limits.h>
#include <rfb/rfb.h>
#include "rfbtightproto.h"
#include "filetransfermsg.h"
#include "handlefiletransferrequest.h"
pthread_mutex_t fileDownloadMutex = PTHREAD_MUTEX_INITIALIZER;
rfbBool fileTransferEnabled = TRUE;
rfbBool fileTransferInitted = FALSE;
char ftproot[PATH_MAX];
/******************************************************************************
* File Transfer Init methods. These methods are called for initializating
* File Transfer and setting ftproot.
******************************************************************************/
void InitFileTransfer();
int SetFtpRoot(char* path);
char* GetHomeDir(uid_t uid);
void FreeHomeDir(char *homedir);
/*
* InitFileTransfer method is called before parsing the command-line options
* for Xvnc. This sets the ftproot to the Home dir of the user running the Xvnc
* server. In case of error ftproot is set to '\0' char.
*/
void
InitFileTransfer()
{
char* userHome = NULL;
uid_t uid = geteuid();
if(fileTransferInitted)
return;
rfbLog("tightvnc-filetransfer/InitFileTransfer\n");
memset(ftproot, 0, sizeof(ftproot));
userHome = GetHomeDir(uid);
if((userHome != NULL) && (strlen(userHome) != 0)) {
SetFtpRoot(userHome);
FreeHomeDir(userHome);
}
fileTransferEnabled = TRUE;
fileTransferInitted = TRUE;
}
#ifndef __GNUC__
#define __FUNCTION__ "unknown"
#endif
/*
* This method is called from InitFileTransfer method and
* if the command line option for ftproot is provided.
*/
int
SetFtpRoot(char* path)
{
struct stat stat_buf;
DIR* dir = NULL;
rfbLog("tightvnc-filetransfer/SetFtpRoot\n");
if((path == NULL) || (strlen(path) == 0) || (strlen(path) > (PATH_MAX - 1))) {
rfbLog("File [%s]: Method [%s]: parameter passed is improper, ftproot"
" not changed\n", __FILE__, __FUNCTION__);
return FALSE;
}
if(stat(path, &stat_buf) < 0) {
rfbLog("File [%s]: Method [%s]: Reading stat for file %s failed\n",
__FILE__, __FUNCTION__, path);
return FALSE;
}
if(S_ISDIR(stat_buf.st_mode) == 0) {
rfbLog("File [%s]: Method [%s]: path specified is not a directory\n",
__FILE__, __FUNCTION__);
return FALSE;
}
if((dir = opendir(path)) == NULL) {
rfbLog("File [%s]: Method [%s]: Not able to open the directory\n",
__FILE__, __FUNCTION__);
return FALSE;
}
else {
closedir(dir);
dir = NULL;
}
memset(ftproot, 0, PATH_MAX);
if(path[strlen(path)-1] == '/') {
memcpy(ftproot, path, strlen(path)-1);
}
else
memcpy(ftproot, path, strlen(path));
return TRUE;
}
/*
* Get the home directory for the user name
* param: username - name of the user for whom the home directory is required.
* returns: returns the home directory for the user, or null in case the entry
* is not found or any error. The returned string must be freed by calling the
* freehomedir function.
*/
char*
GetHomeDir(uid_t uid)
{
struct passwd *pwEnt = NULL;
char *homedir = NULL;
pwEnt = getpwuid (uid);
if (pwEnt == NULL)
return NULL;
if(pwEnt->pw_dir != NULL) {
homedir = strdup (pwEnt->pw_dir);
}
return homedir;
}
/*
* Free the home directory allocated by a previous call to retrieve the home
* directory. param: homedir - the string returned by a previous call to
* retrieve home directory for a user.
*/
void
FreeHomeDir(char *homedir)
{
free (homedir);
}
/******************************************************************************
* General methods.
******************************************************************************/
/*
* When the console sends the File Transfer Request, it sends the file path with
* ftproot as "/". So on Agent, to get the absolute file path we need to prepend
* the ftproot to it.
*/
char*
ConvertPath(char* path)
{
char p[PATH_MAX];
memset(p, 0, PATH_MAX);
if( (path == NULL) ||
(strlen(path) == 0) ||
(strlen(path)+strlen(ftproot) > PATH_MAX - 1) ) {
rfbLog("File [%s]: Method [%s]: cannot create path for file transfer\n",
__FILE__, __FUNCTION__);
return NULL;
}
memcpy(p, path, strlen(path));
memset(path, 0, PATH_MAX);
sprintf(path, "%s%s", ftproot, p);
return path;
}
void
EnableFileTransfer(rfbBool enable)
{
fileTransferEnabled = enable;
}
rfbBool
IsFileTransferEnabled()
{
return fileTransferEnabled;
}
char*
GetFtpRoot()
{
return ftproot;
}
/******************************************************************************
* Methods to Handle File List Request.
******************************************************************************/
/*
* HandleFileListRequest method is called when the server receives
* FileListRequest. In case of success a file list is sent to the client.
* For File List Request there is no failure reason sent.So here in case of any
* "unexpected" error no information will be sent. As these conditions should
* never come. Lets hope it never arrives :)
* In case of dir open failure an empty list will be sent, just the header of
* the message filled up. So on console you will get an Empty listing.
*/
void
HandleFileListRequest(rfbClientPtr cl, rfbTightClientRec* data)
{
rfbClientToServerTightMsg msg;
int n = 0;
char path[PATH_MAX]; /* PATH_MAX has the value 4096 and is defined in limits.h */
FileTransferMsg fileListMsg;
memset(&msg, 0, sizeof(rfbClientToServerTightMsg));
memset(path, 0, PATH_MAX);
memset(&fileListMsg, 0, sizeof(FileTransferMsg));
if(cl == NULL) {
rfbLog("File [%s]: Method [%s]: Unexpected error: rfbClientPtr is null\n",
__FILE__, __FUNCTION__);
return;
}
if((n = rfbReadExact(cl, ((char *)&msg)+1, sz_rfbFileListRequestMsg-1)) <= 0) {
if (n < 0)
rfbLog("File [%s]: Method [%s]: Socket error while reading dir name"
" length\n", __FILE__, __FUNCTION__);
rfbCloseClient(cl);
return;
}
msg.flr.dirNameSize = Swap16IfLE(msg.flr.dirNameSize);
if ((msg.flr.dirNameSize == 0) ||
(msg.flr.dirNameSize > (PATH_MAX - 1))) {
rfbLog("File [%s]: Method [%s]: Unexpected error:: path length is "
"greater that PATH_MAX\n", __FILE__, __FUNCTION__);
return;
}
if((n = rfbReadExact(cl, path, msg.flr.dirNameSize)) <= 0) {
if (n < 0)
rfbLog("File [%s]: Method [%s]: Socket error while reading dir name\n",
__FILE__, __FUNCTION__);
rfbCloseClient(cl);
return;
}
if(ConvertPath(path) == NULL) {
/* The execution should never reach here */
rfbLog("File [%s]: Method [%s]: Unexpected error: path is NULL",
__FILE__, __FUNCTION__);
return;
}
fileListMsg = GetFileListResponseMsg(path, (char) (msg.flr.flags));
if((fileListMsg.data == NULL) || (fileListMsg.length == 0)) {
rfbLog("File [%s]: Method [%s]: Unexpected error:: Data to be sent is "
"of Zero length\n", __FILE__, __FUNCTION__);
return;
}
rfbWriteExact(cl, fileListMsg.data, fileListMsg.length);
FreeFileTransferMsg(fileListMsg);
}
/******************************************************************************
* Methods to Handle File Download Request.
******************************************************************************/
void HandleFileDownloadLengthError(rfbClientPtr cl, short fNameSize);
void SendFileDownloadLengthErrMsg(rfbClientPtr cl);
void HandleFileDownload(rfbClientPtr cl, rfbTightClientPtr data);
#ifdef TODO
void HandleFileDownloadRequest(rfbClientPtr cl);
void SendFileDownloadErrMsg(rfbClientPtr cl);
void* RunFileDownloadThread(void* client);
#endif
/*
* HandleFileDownloadRequest method is called when the server receives
* rfbFileDownload request message.
*/
void
HandleFileDownloadRequest(rfbClientPtr cl, rfbTightClientPtr rtcp)
{
int n = 0;
char path[PATH_MAX]; /* PATH_MAX has the value 4096 and is defined in limits.h */
rfbClientToServerTightMsg msg;
memset(path, 0, sizeof(path));
memset(&msg, 0, sizeof(rfbClientToServerTightMsg));
if(cl == NULL) {
rfbLog("File [%s]: Method [%s]: Unexpected error:: rfbClientPtr is null\n",
__FILE__, __FUNCTION__);
return;
}
if((n = rfbReadExact(cl, ((char *)&msg)+1, sz_rfbFileDownloadRequestMsg-1)) <= 0) {
if (n < 0)
rfbLog("File [%s]: Method [%s]: Error while reading dir name length\n",
__FILE__, __FUNCTION__);
rfbCloseClient(cl);
return;
}
msg.fdr.fNameSize = Swap16IfLE(msg.fdr.fNameSize);
msg.fdr.position = Swap16IfLE(msg.fdr.position);
if ((msg.fdr.fNameSize == 0) ||
(msg.fdr.fNameSize > (PATH_MAX - 1))) {
rfbLog("File [%s]: Method [%s]: Error: path length is greater than"
" PATH_MAX\n", __FILE__, __FUNCTION__);
HandleFileDownloadLengthError(cl, msg.fdr.fNameSize);
return;
}
if((n = rfbReadExact(cl, rtcp->rcft.rcfd.fName, msg.fdr.fNameSize)) <= 0) {
if (n < 0)
rfbLog("File [%s]: Method [%s]: Error while reading dir name length\n",
__FILE__, __FUNCTION__);
rfbCloseClient(cl);
return;
}
rtcp->rcft.rcfd.fName[msg.fdr.fNameSize] = '\0';
if(ConvertPath(rtcp->rcft.rcfd.fName) == NULL) {
rfbLog("File [%s]: Method [%s]: Unexpected error: path is NULL",
__FILE__, __FUNCTION__);
/* This condition can come only if the file path is greater than
PATH_MAX. So sending file path length error msg back to client.
*/
SendFileDownloadLengthErrMsg(cl);
return;
}
HandleFileDownload(cl, rtcp);
}
void
HandleFileDownloadLengthError(rfbClientPtr cl, short fNameSize)
{
char *path = NULL;
int n = 0;
if((path = (char*) calloc(fNameSize, sizeof(char))) == NULL) {
rfbLog("File [%s]: Method [%s]: Fatal Error: Alloc failed\n",
__FILE__, __FUNCTION__);
return;
}
if((n = rfbReadExact(cl, path, fNameSize)) <= 0) {
if (n < 0)
rfbLog("File [%s]: Method [%s]: Error while reading dir name\n",
__FILE__, __FUNCTION__);
rfbCloseClient(cl);
if(path != NULL) {
free(path);
path = NULL;
}
return;
}
if(path != NULL) {
free(path);
path = NULL;
}
SendFileDownloadLengthErrMsg(cl);
}
void
SendFileDownloadLengthErrMsg(rfbClientPtr cl)
{
FileTransferMsg fileDownloadErrMsg;
memset(&fileDownloadErrMsg, 0 , sizeof(FileTransferMsg));
fileDownloadErrMsg = GetFileDownloadLengthErrResponseMsg();
if((fileDownloadErrMsg.data == NULL) || (fileDownloadErrMsg.length == 0)) {
rfbLog("File [%s]: Method [%s]: Unexpected error: fileDownloadErrMsg "
"is null\n", __FILE__, __FUNCTION__);
return;
}
rfbWriteExact(cl, fileDownloadErrMsg.data, fileDownloadErrMsg.length);
FreeFileTransferMsg(fileDownloadErrMsg);
}
extern rfbTightClientPtr rfbGetTightClientData(rfbClientPtr cl);
void*
RunFileDownloadThread(void* client)
{
rfbClientPtr cl = (rfbClientPtr) client;
rfbTightClientPtr rtcp = rfbGetTightClientData(cl);
FileTransferMsg fileDownloadMsg;
if(rtcp == NULL)
return NULL;
memset(&fileDownloadMsg, 0, sizeof(FileTransferMsg));
do {
pthread_mutex_lock(&fileDownloadMutex);
fileDownloadMsg = GetFileDownloadResponseMsgInBlocks(cl, rtcp);
pthread_mutex_unlock(&fileDownloadMutex);
if((fileDownloadMsg.data != NULL) && (fileDownloadMsg.length != 0)) {
if(rfbWriteExact(cl, fileDownloadMsg.data, fileDownloadMsg.length) < 0) {
rfbLog("File [%s]: Method [%s]: Error while writing to socket \n"
, __FILE__, __FUNCTION__);
if(cl != NULL) {
rfbCloseClient(cl);
CloseUndoneFileTransfer(cl, rtcp);
}
FreeFileTransferMsg(fileDownloadMsg);
return NULL;
}
FreeFileTransferMsg(fileDownloadMsg);
}
} while(rtcp->rcft.rcfd.downloadInProgress == TRUE);
return NULL;
}
void
HandleFileDownload(rfbClientPtr cl, rfbTightClientPtr rtcp)
{
pthread_t fileDownloadThread;
FileTransferMsg fileDownloadMsg;
memset(&fileDownloadMsg, 0, sizeof(FileTransferMsg));
fileDownloadMsg = ChkFileDownloadErr(cl, rtcp);
if((fileDownloadMsg.data != NULL) && (fileDownloadMsg.length != 0)) {
rfbWriteExact(cl, fileDownloadMsg.data, fileDownloadMsg.length);
FreeFileTransferMsg(fileDownloadMsg);
return;
}
rtcp->rcft.rcfd.downloadInProgress = FALSE;
rtcp->rcft.rcfd.downloadFD = -1;
if(pthread_create(&fileDownloadThread, NULL, RunFileDownloadThread, (void*)
cl) != 0) {
FileTransferMsg ftm = GetFileDownLoadErrMsg();
rfbLog("File [%s]: Method [%s]: Download thread creation failed\n",
__FILE__, __FUNCTION__);
if((ftm.data != NULL) && (ftm.length != 0)) {
rfbWriteExact(cl, ftm.data, ftm.length);
FreeFileTransferMsg(ftm);
return;
}
}
}
/******************************************************************************
* Methods to Handle File Download Cancel Request.
******************************************************************************/
void
HandleFileDownloadCancelRequest(rfbClientPtr cl, rfbTightClientPtr rtcp)
{
int n = 0;
char *reason = NULL;
rfbClientToServerTightMsg msg;
memset(&msg, 0, sizeof(rfbClientToServerTightMsg));
if((n = rfbReadExact(cl, ((char *)&msg)+1, sz_rfbFileDownloadCancelMsg-1)) <= 0) {
if (n < 0)
rfbLog("File [%s]: Method [%s]: Error while reading "
"FileDownloadCancelMsg\n", __FILE__, __FUNCTION__);
rfbCloseClient(cl);
return;
}
msg.fdc.reasonLen = Swap16IfLE(msg.fdc.reasonLen);
if(msg.fdc.reasonLen == 0) {
rfbLog("File [%s]: Method [%s]: reason length received is Zero\n",
__FILE__, __FUNCTION__);
return;
}
reason = (char*) calloc(msg.fdc.reasonLen + 1, sizeof(char));
if(reason == NULL) {
rfbLog("File [%s]: Method [%s]: Fatal Error: Memory alloc failed\n",
__FILE__, __FUNCTION__);
return;
}
if((n = rfbReadExact(cl, reason, msg.fdc.reasonLen)) <= 0) {
if (n < 0)
rfbLog("File [%s]: Method [%s]: Error while reading "
"FileDownloadCancelMsg\n", __FILE__, __FUNCTION__);
rfbCloseClient(cl);
}
rfbLog("File [%s]: Method [%s]: File Download Cancel Request received:"
" reason <%s>\n", __FILE__, __FUNCTION__, reason);
pthread_mutex_lock(&fileDownloadMutex);
CloseUndoneFileTransfer(cl, rtcp);
pthread_mutex_unlock(&fileDownloadMutex);
if(reason != NULL) {
free(reason);
reason = NULL;
}
}
/******************************************************************************
* Methods to Handle File upload request
******************************************************************************/
#ifdef TODO
void HandleFileUploadRequest(rfbClientPtr cl);
#endif
void HandleFileUpload(rfbClientPtr cl, rfbTightClientPtr data);
void HandleFileUploadLengthError(rfbClientPtr cl, short fNameSize);
void SendFileUploadLengthErrMsg(rfbClientPtr cl);
void
HandleFileUploadRequest(rfbClientPtr cl, rfbTightClientPtr rtcp)
{
int n = 0;
char path[PATH_MAX]; /* PATH_MAX has the value 4096 and is defined in limits.h */
rfbClientToServerTightMsg msg;
memset(path, 0, PATH_MAX);
memset(&msg, 0, sizeof(rfbClientToServerTightMsg));
if(cl == NULL) {
rfbLog("File [%s]: Method [%s]: Unexpected error: rfbClientPtr is null\n",
__FILE__, __FUNCTION__);
return;
}
if((n = rfbReadExact(cl, ((char *)&msg)+1, sz_rfbFileUploadRequestMsg-1)) <= 0) {
if (n < 0)
rfbLog("File [%s]: Method [%s]: Error while reading FileUploadRequestMsg\n",
__FILE__, __FUNCTION__);
rfbCloseClient(cl);
return;
}
msg.fupr.fNameSize = Swap16IfLE(msg.fupr.fNameSize);
msg.fupr.position = Swap16IfLE(msg.fupr.position);
if ((msg.fupr.fNameSize == 0) ||
(msg.fupr.fNameSize > (PATH_MAX - 1))) {
rfbLog("File [%s]: Method [%s]: error: path length is greater than PATH_MAX\n",
__FILE__, __FUNCTION__);
HandleFileUploadLengthError(cl, msg.fupr.fNameSize);
return;
}
if((n = rfbReadExact(cl, rtcp->rcft.rcfu.fName, msg.fupr.fNameSize)) <= 0) {
if (n < 0)
rfbLog("File [%s]: Method [%s]: Error while reading FileUploadRequestMsg\n"
__FILE__, __FUNCTION__);
rfbCloseClient(cl);
return;
}
rtcp->rcft.rcfu.fName[msg.fupr.fNameSize] = '\0';
if(ConvertPath(rtcp->rcft.rcfu.fName) == NULL) {
rfbLog("File [%s]: Method [%s]: Unexpected error: path is NULL\n",
__FILE__, __FUNCTION__);
/* This may come if the path length exceeds PATH_MAX.
So sending path length error to client
*/
SendFileUploadLengthErrMsg(cl);
return;
}
HandleFileUpload(cl, rtcp);
}
void
HandleFileUploadLengthError(rfbClientPtr cl, short fNameSize)
{
char *path = NULL;
int n = 0;
if((path = (char*) calloc(fNameSize, sizeof(char))) == NULL) {
rfbLog("File [%s]: Method [%s]: Fatal Error: Alloc failed\n",
__FILE__, __FUNCTION__);
return;
}
if((n = rfbReadExact(cl, path, fNameSize)) <= 0) {
if (n < 0)
rfbLog("File [%s]: Method [%s]: Error while reading dir name\n",
__FILE__, __FUNCTION__);
rfbCloseClient(cl);
if(path != NULL) {
free(path);
path = NULL;
}
return;
}
rfbLog("File [%s]: Method [%s]: File Upload Length Error occured"
"file path requested is <%s>\n", __FILE__, __FUNCTION__, path);
if(path != NULL) {
free(path);
path = NULL;
}
SendFileUploadLengthErrMsg(cl);
}
void
SendFileUploadLengthErrMsg(rfbClientPtr cl)
{
FileTransferMsg fileUploadErrMsg;
memset(&fileUploadErrMsg, 0, sizeof(FileTransferMsg));
fileUploadErrMsg = GetFileUploadLengthErrResponseMsg();
if((fileUploadErrMsg.data == NULL) || (fileUploadErrMsg.length == 0)) {
rfbLog("File [%s]: Method [%s]: Unexpected error: fileUploadErrMsg is null\n",
__FILE__, __FUNCTION__);
return;
}
rfbWriteExact(cl, fileUploadErrMsg.data, fileUploadErrMsg.length);
FreeFileTransferMsg(fileUploadErrMsg);
}
void
HandleFileUpload(rfbClientPtr cl, rfbTightClientPtr rtcp)
{
FileTransferMsg fileUploadErrMsg;
memset(&fileUploadErrMsg, 0, sizeof(FileTransferMsg));
rtcp->rcft.rcfu.uploadInProgress = FALSE;
rtcp->rcft.rcfu.uploadFD = -1;
fileUploadErrMsg = ChkFileUploadErr(cl, rtcp);
if((fileUploadErrMsg.data != NULL) && (fileUploadErrMsg.length != 0)) {
rfbWriteExact(cl, fileUploadErrMsg.data, fileUploadErrMsg.length);
FreeFileTransferMsg(fileUploadErrMsg);
}
}
/******************************************************************************
* Methods to Handle File Upload Data Request
*****************************************************************************/
void HandleFileUploadWrite(rfbClientPtr cl, rfbTightClientPtr rtcp, char* pBuf);
void
HandleFileUploadDataRequest(rfbClientPtr cl, rfbTightClientPtr rtcp)
{
int n = 0;
char* pBuf = NULL;
rfbClientToServerTightMsg msg;
memset(&msg, 0, sizeof(rfbClientToServerTightMsg));
if(cl == NULL) {
rfbLog("File [%s]: Method [%s]: Unexpected error: rfbClientPtr is null\n",
__FILE__, __FUNCTION__);
return;
}
if((n = rfbReadExact(cl, ((char *)&msg)+1, sz_rfbFileUploadDataMsg-1)) <= 0) {
if (n < 0)
rfbLog("File [%s]: Method [%s]: Error while reading FileUploadRequestMsg\n",
__FILE__, __FUNCTION__);
rfbCloseClient(cl);
return;
}
msg.fud.realSize = Swap16IfLE(msg.fud.realSize);
msg.fud.compressedSize = Swap16IfLE(msg.fud.compressedSize);
if((msg.fud.realSize == 0) && (msg.fud.compressedSize == 0)) {
if((n = rfbReadExact(cl, (char*)&(rtcp->rcft.rcfu.mTime), sizeof(unsigned
long))) <= 0) {
if (n < 0)
rfbLog("File [%s]: Method [%s]: Error while reading FileUploadRequestMsg\n",
__FILE__, __FUNCTION__);
rfbCloseClient(cl);
return;
}
FileUpdateComplete(cl, rtcp);
return;
}
pBuf = (char*) calloc(msg.fud.compressedSize, sizeof(char));
if(pBuf == NULL) {
rfbLog("File [%s]: Method [%s]: Memory alloc failed\n", __FILE__, __FUNCTION__);
return;
}
if((n = rfbReadExact(cl, pBuf, msg.fud.compressedSize)) <= 0) {
if (n < 0)
rfbLog("File [%s]: Method [%s]: Error while reading FileUploadRequestMsg\n",
__FILE__, __FUNCTION__);
rfbCloseClient(cl);
if(pBuf != NULL) {
free(pBuf);
pBuf = NULL;
}
return;
}
if(msg.fud.compressedLevel != 0) {
FileTransferMsg ftm;
memset(&ftm, 0, sizeof(FileTransferMsg));
ftm = GetFileUploadCompressedLevelErrMsg();
if((ftm.data != NULL) && (ftm.length != 0)) {
rfbWriteExact(cl, ftm.data, ftm.length);
FreeFileTransferMsg(ftm);
}
CloseUndoneFileTransfer(cl, rtcp);
if(pBuf != NULL) {
free(pBuf);
pBuf = NULL;
}
return;
}
rtcp->rcft.rcfu.fSize = msg.fud.compressedSize;
HandleFileUploadWrite(cl, rtcp, pBuf);
if(pBuf != NULL) {
free(pBuf);
pBuf = NULL;
}
}
void
HandleFileUploadWrite(rfbClientPtr cl, rfbTightClientPtr rtcp, char* pBuf)
{
FileTransferMsg ftm;
memset(&ftm, 0, sizeof(FileTransferMsg));
ftm = ChkFileUploadWriteErr(cl, rtcp, pBuf);
if((ftm.data != NULL) && (ftm.length != 0)) {
rfbWriteExact(cl, ftm.data, ftm.length);
FreeFileTransferMsg(ftm);
}
}
/******************************************************************************
* Methods to Handle File Upload Failed Request.
******************************************************************************/
void
HandleFileUploadFailedRequest(rfbClientPtr cl, rfbTightClientPtr rtcp)
{
int n = 0;
char* reason = NULL;
rfbClientToServerTightMsg msg;
memset(&msg, 0, sizeof(rfbClientToServerTightMsg));
if(cl == NULL) {
rfbLog("File [%s]: Method [%s]: Unexpected error: rfbClientPtr is null\n",
__FILE__, __FUNCTION__);
return;
}
if((n = rfbReadExact(cl, ((char *)&msg)+1, sz_rfbFileUploadFailedMsg-1)) <= 0) {
if (n < 0)
rfbLog("File [%s]: Method [%s]: Error while reading FileUploadFailedMsg\n",
__FILE__, __FUNCTION__);
rfbCloseClient(cl);
return;
}
msg.fuf.reasonLen = Swap16IfLE(msg.fuf.reasonLen);
if(msg.fuf.reasonLen == 0) {
rfbLog("File [%s]: Method [%s]: reason length received is Zero\n",
__FILE__, __FUNCTION__);
return;
}
reason = (char*) calloc(msg.fuf.reasonLen + 1, sizeof(char));
if(reason == NULL) {
rfbLog("File [%s]: Method [%s]: Memory alloc failed\n", __FILE__, __FUNCTION__);
return;
}
if((n = rfbReadExact(cl, reason, msg.fuf.reasonLen)) <= 0) {
if (n < 0)
rfbLog("File [%s]: Method [%s]: Error while reading FileUploadFailedMsg\n",
__FILE__, __FUNCTION__);
rfbCloseClient(cl);
if(reason != NULL) {
free(reason);
reason = NULL;
}
return;
}
rfbLog("File [%s]: Method [%s]: File Upload Failed Request received:"
" reason <%s>\n", __FILE__, __FUNCTION__, reason);
CloseUndoneFileTransfer(cl, rtcp);
if(reason != NULL) {
free(reason);
reason = NULL;
}
}
/******************************************************************************
* Methods to Handle File Create Request.
******************************************************************************/
void
HandleFileCreateDirRequest(rfbClientPtr cl, rfbTightClientPtr rtcp)
{
int n = 0;
char dirName[PATH_MAX];
rfbClientToServerTightMsg msg;
memset(dirName, 0, PATH_MAX);
memset(&msg, 0, sizeof(rfbClientToServerTightMsg));
if(cl == NULL) {
rfbLog("File [%s]: Method [%s]: Unexpected error: rfbClientPtr is null\n",
__FILE__, __FUNCTION__);
return;
}
if((n = rfbReadExact(cl, ((char *)&msg)+1, sz_rfbFileCreateDirRequestMsg-1)) <= 0) {
if (n < 0)
rfbLog("File [%s]: Method [%s]: Error while reading FileCreateDirRequestMsg\n",
__FILE__, __FUNCTION__);
rfbCloseClient(cl);
return;
}
msg.fcdr.dNameLen = Swap16IfLE(msg.fcdr.dNameLen);
/* TODO :: chk if the dNameLen is greater than PATH_MAX */
if((n = rfbReadExact(cl, dirName, msg.fcdr.dNameLen)) <= 0) {
if (n < 0)
rfbLog("File [%s]: Method [%s]: Error while reading FileUploadFailedMsg\n",
__FILE__, __FUNCTION__);
rfbCloseClient(cl);
return;
}
if(ConvertPath(dirName) == NULL) {
rfbLog("File [%s]: Method [%s]: Unexpected error: path is NULL\n",
__FILE__, __FUNCTION__);
return;
}
CreateDirectory(dirName);
}
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