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/**
* @file FTPClient.cpp
* @brief implementation of the FTP client class
* @author Mohamed Amine Mzoughi <mohamed-amine.mzoughi@laposte.net>
*/
#include "FTPClient.h"
#include <iterator>
#include <stdexcept>
#define UNUSED(x) static_cast<void>(x);
namespace embeddedmz {
// Static members initialization
#ifdef DEBUG_CURL
std::string CFTPClient::s_strCurlTraceLogDirectory;
#endif
/**
* @brief constructor of the FTP client object
*
* @param Logger - a callabck to a logger function void(const std::string&)
*
*/
CFTPClient::CFTPClient(LogFnCallback Logger)
:
m_bActive(false),
m_bNoSignal(true),
m_bInsecure(false),
m_uPort(0),
m_eFtpProtocol(FTP_PROTOCOL::FTP),
m_eSettingsFlags(NO_FLAGS),
m_pCurlSession(nullptr),
m_iCurlTimeout(0),
m_bProgressCallbackSet(false),
m_oLog(std::move(Logger)),
m_curlHandle(CurlHandle::instance())
{
if (!m_oLog) {
throw std::logic_error{"Invalid logger clb applied"};
}
}
/**
* @brief destructor of the FTP client object
*
*/
CFTPClient::~CFTPClient() {
if (m_pCurlSession != nullptr) {
if (m_eSettingsFlags & ENABLE_LOG) m_oLog(LOG_WARNING_OBJECT_NOT_CLEANED);
CleanupSession();
}
}
/**
* @brief starts a new FTP session, initializes the cURL API session
*
* if a new session was already started, the method has no effect.
*
* @param [in] strHost server address
* @param [in] uPort the remote port
* @param [in] strLogin username
* @param [in] strPassword password
* @param [in] eFtpProtocol the protocol used to connect to the server (FTP,
* FTPS, FTPES, SFTP)
* @param [in] eSettingsFlags optional use | operator to choose multiple options
*
* @retval true Successfully initialized the session.
* @retval false The session is already initialized.
* call CleanupSession() before initializing a new one or the Curl API is not
* initialized.
*
* Example Usage:
* @code
* m_pFTPClient->InitSession("ftp://127.0.0.1", 21, "username", "password");
* @endcode
*/
bool CFTPClient::InitSession(const std::string &strHost, const unsigned &uPort, const std::string &strLogin,
const std::string &strPassword, const FTP_PROTOCOL &eFtpProtocol /* = FTP */,
const SettingsFlag &eSettingsFlags /* = NO_FLAGS */) {
if (strHost.empty()) {
if (m_eSettingsFlags & ENABLE_LOG) m_oLog(LOG_ERROR_EMPTY_HOST_MSG);
return false;
}
if (m_pCurlSession) {
if (m_eSettingsFlags & ENABLE_LOG) m_oLog(LOG_ERROR_CURL_ALREADY_INIT_MSG);
return false;
}
m_pCurlSession = curl_easy_init();
m_strServer = strHost;
m_uPort = uPort;
m_strUserName = strLogin;
m_strPassword = strPassword;
m_eFtpProtocol = eFtpProtocol;
m_eSettingsFlags = eSettingsFlags;
return (m_pCurlSession != nullptr);
}
/**
* @brief cleans the current FTP session
*
* if a session was not already started, the method has no effect
*
* @retval true Successfully cleaned the current session.
* @retval false The session is not initialized.
*
* Example Usage:
* @code
* objFTPClient.CleanupSession();
* @endcode
*/
bool CFTPClient::CleanupSession() {
if (!m_pCurlSession) {
if (m_eSettingsFlags & ENABLE_LOG) m_oLog(LOG_ERROR_CURL_NOT_INIT_MSG);
return false;
}
#ifdef DEBUG_CURL
if (m_ofFileCurlTrace.is_open()) {
m_ofFileCurlTrace.close();
}
#endif
curl_easy_cleanup(m_pCurlSession);
m_pCurlSession = nullptr;
return true;
}
/**
* @brief sets the progress function callback and the owner of the client
*
* @param [in] pOwner pointer to the object owning the client, nullptr otherwise
* @param [in] fnCallback callback to progress function
*
*/
void CFTPClient::SetProgressFnCallback(void *pOwner, const ProgressFnCallback &fnCallback) {
m_ProgressStruct.pOwner = pOwner;
m_fnProgressCallback = fnCallback;
m_ProgressStruct.pCurl = m_pCurlSession;
m_ProgressStruct.dLastRunTime = 0;
m_bProgressCallbackSet = true;
}
/**
* @brief sets the HTTP Proxy address to tunnel the operation through it
*
* @param [in] strProxy URI of the HTTP Proxy
*
*/
void CFTPClient::SetProxy(const std::string &strProxy) {
if (strProxy.empty()) return;
std::string strUri = strProxy;
std::transform(strUri.begin(), strUri.end(), strUri.begin(), ::toupper);
if (strUri.compare(0, 4, "HTTP") != 0)
m_strProxy = "http://" + strProxy;
else
m_strProxy = strProxy;
};
/**
* @brief generates a URI
*
* '/' will be duplicated to be interpreted correctly by the Curl API.
*
* @param [in] strRemoteFile URL of the file.
*
* @retval std::string A complete URI containing the requested resource.
*
* Example Usage:
* @code
* ParseURL("documents/info.txt"); //returns
* "ftp://127.0.0.1//documents//info.txt"
* @endcode
*/
std::string CFTPClient::ParseURL(const std::string &strRemoteFile) const {
std::string strURL = m_strServer + "/" + strRemoteFile;
ReplaceString(strURL, "/", "//");
std::string strUri = strURL;
// boost::to_upper(strUri);
std::transform(strUri.begin(), strUri.end(), strUri.begin(), ::toupper);
if (strUri.compare(0, 3, "FTP") != 0 && strUri.compare(0, 4, "SFTP") != 0) {
switch (m_eFtpProtocol) {
case FTP_PROTOCOL::FTP:
case FTP_PROTOCOL::FTPES:
default:
strURL = "ftp://" + strURL;
break;
case FTP_PROTOCOL::FTPS:
strURL = "ftps://" + strURL;
break;
case FTP_PROTOCOL::SFTP:
strURL = "sftp://" + strURL;
break;
}
}
return strURL;
}
/**
* @brief creates a remote directory
*
* @param [in] strNewDir the remote direcotry to be created encoded in UTF-8 format.
*
* @retval true Successfully created a directory.
* @retval false The directory couldn't be created.
*
* Example Usage:
* @code
* m_pFTPClient->CreateDir("upload/bookmarks");
* // Will create bookmarks directory under the upload dir (must exist).
* @endcode
*/
bool CFTPClient::CreateDir(const std::string &strNewDir) const {
if (strNewDir.empty()) return false;
if (!m_pCurlSession) {
if (m_eSettingsFlags & ENABLE_LOG) m_oLog(LOG_ERROR_CURL_NOT_INIT_MSG);
return false;
}
// Reset is mandatory to avoid bad surprises
curl_easy_reset(m_pCurlSession);
struct curl_slist *headerlist = nullptr;
std::string strRemoteFolder;
std::string strRemoteNewFolderName;
std::string strBuf;
bool bRet = false;
if (m_eFtpProtocol == FTP_PROTOCOL::SFTP) {
strRemoteFolder = ParseURL("");
strRemoteNewFolderName = strNewDir;
// Append the rmdir command
strBuf += "mkdir ";
} else {
// Splitting folder name
std::size_t uFound = strNewDir.find_last_of("/");
if (uFound != std::string::npos) {
strRemoteFolder = ParseURL(strNewDir.substr(0, uFound)) + "//";
strRemoteNewFolderName = strNewDir.substr(uFound + 1);
} else // the dir. to be created is located in the root directory
{
strRemoteFolder = ParseURL("");
strRemoteNewFolderName = strNewDir;
}
// Append the MKD command
strBuf += "MKD ";
}
// Specify target
curl_easy_setopt(m_pCurlSession, CURLOPT_URL, strRemoteFolder.c_str());
strBuf += strRemoteNewFolderName;
headerlist = curl_slist_append(headerlist, strBuf.c_str());
curl_easy_setopt(m_pCurlSession, CURLOPT_POSTQUOTE, headerlist);
curl_easy_setopt(m_pCurlSession, CURLOPT_NOBODY, 1L);
curl_easy_setopt(m_pCurlSession, CURLOPT_HEADER, 1L);
curl_easy_setopt(m_pCurlSession, CURLOPT_FTP_CREATE_MISSING_DIRS, CURLFTP_CREATE_DIR);
/* enable TCP keep-alive for this transfer */
curl_easy_setopt(m_pCurlSession, CURLOPT_TCP_KEEPALIVE, 0L);
CURLcode res = Perform();
// Check for errors
if (res != CURLE_OK) {
if (m_eSettingsFlags & ENABLE_LOG)
m_oLog(StringFormat(LOG_ERROR_CURL_MKDIR_FORMAT, strRemoteNewFolderName.c_str(), res, curl_easy_strerror(res)));
} else
bRet = true;
// clean up the FTP commands list
curl_slist_free_all(headerlist);
return bRet;
}
/**
* @brief removes an empty remote directory
*
* if the remote directory ain't empty, the method will fail.
* yhe user must use RemoveFile() on all directory's files then use RemoveDir to
* delete the latter.
*
* @param [in] strDir the remote direcotry to be removed encoded in UTF-8 format.
*
* @retval true Successfully removed a directory.
* @retval false The directory couldn't be removed.
*
* Example Usage:
* @code
* m_pFTPClient->RemoveDir("upload/bookmarks");
* // Will remove bookmarks directory, upload must exist.
* @endcode
*/
bool CFTPClient::RemoveDir(const std::string &strDir) const {
if (strDir.empty()) return false;
if (!m_pCurlSession) {
if (m_eSettingsFlags & ENABLE_LOG) m_oLog(LOG_ERROR_CURL_NOT_INIT_MSG);
return false;
}
// Reset is mandatory to avoid bad surprises
curl_easy_reset(m_pCurlSession);
struct curl_slist *headerlist = nullptr;
std::string strRemoteFolder;
std::string strRemoteFolderName;
std::string strBuf;
bool bRet = false;
if (m_eFtpProtocol == FTP_PROTOCOL::SFTP) {
strRemoteFolder = ParseURL("");
strRemoteFolderName = strDir;
// Append the rmdir command
strBuf += "rmdir ";
} else {
// Splitting folder name
std::size_t uFound = strDir.find_last_of("/");
if (uFound != std::string::npos) {
strRemoteFolder = ParseURL(strDir.substr(0, uFound)) + "//";
strRemoteFolderName = strDir.substr(uFound + 1);
} else // the dir. to be removed is located in the root directory
{
strRemoteFolder = ParseURL("");
strRemoteFolderName = strDir;
}
// Append the rmd command
strBuf += "RMD ";
}
// Specify target
curl_easy_setopt(m_pCurlSession, CURLOPT_URL, strRemoteFolder.c_str());
strBuf += strRemoteFolderName;
headerlist = curl_slist_append(headerlist, strBuf.c_str());
curl_easy_setopt(m_pCurlSession, CURLOPT_POSTQUOTE, headerlist);
curl_easy_setopt(m_pCurlSession, CURLOPT_NOBODY, 1L);
curl_easy_setopt(m_pCurlSession, CURLOPT_HEADER, 1L);
CURLcode res = Perform();
if (res != CURLE_OK) {
if (m_eSettingsFlags & ENABLE_LOG)
m_oLog(StringFormat(LOG_ERROR_CURL_RMDIR_FORMAT, strRemoteFolderName.c_str(), res, curl_easy_strerror(res)));
} else
bRet = true;
// clean up the FTP commands list
curl_slist_free_all(headerlist);
return bRet;
}
/**
* @brief deletes a remote file
*
* @param [in] strRemoteFile the URL of the remote file encoded in UTF-8 format.
*
* @retval true Successfully deleted the file.
* @retval false The file couldn't be deleted.
*
* Example Usage:
* @code
* m_pFTPClient->RemoveFile("documents/Config.txt");
* // e.g. : Will delete ftp://127.0.0.1/documents/Config.txt
* @endcode
*/
bool CFTPClient::RemoveFile(const std::string &strRemoteFile) const {
if (strRemoteFile.empty()) return false;
if (!m_pCurlSession) {
if (m_eSettingsFlags & ENABLE_LOG) m_oLog(LOG_ERROR_CURL_NOT_INIT_MSG);
return false;
}
// Reset is mandatory to avoid bad surprises
curl_easy_reset(m_pCurlSession);
struct curl_slist *headerlist = nullptr;
std::string strRemoteFolder;
std::string strRemoteFileName;
std::string strBuf;
bool bRet = false;
if (m_eFtpProtocol == FTP_PROTOCOL::SFTP) {
strRemoteFolder = ParseURL("");
strRemoteFileName = strRemoteFile;
// Append the rm command
strBuf += "rm ";
} else {
// Splitting file name
std::size_t uFound = strRemoteFile.find_last_of("/");
if (uFound != std::string::npos) {
strRemoteFolder = ParseURL(strRemoteFile.substr(0, uFound)) + "//";
strRemoteFileName = strRemoteFile.substr(uFound + 1);
} else // the file to be deleted is located in the root directory
{
strRemoteFolder = ParseURL("");
strRemoteFileName = strRemoteFile;
}
// Append the delete command
strBuf += "DELE ";
}
// Specify target
curl_easy_setopt(m_pCurlSession, CURLOPT_URL, strRemoteFolder.c_str());
strBuf += strRemoteFileName;
headerlist = curl_slist_append(headerlist, strBuf.c_str());
curl_easy_setopt(m_pCurlSession, CURLOPT_POSTQUOTE, headerlist);
curl_easy_setopt(m_pCurlSession, CURLOPT_NOBODY, 1L);
curl_easy_setopt(m_pCurlSession, CURLOPT_HEADER, 1L);
CURLcode res = Perform();
// Check for errors
if (res != CURLE_OK) {
if (m_eSettingsFlags & ENABLE_LOG)
m_oLog(StringFormat(LOG_ERROR_CURL_REMOVE_FORMAT, strRemoteFile.c_str(), res, curl_easy_strerror(res)));
} else
bRet = true;
// clean up the FTP commands list
curl_slist_free_all(headerlist);
return bRet;
}
/**
* @brief requests the mtime (epoch) and the size of a remote file.
*
* @param [in] strRemoteFile URN of the remote file encoded in UTF-8 format.
* @param [out] oFileInfo time_t will be updated with the file's mtime and size.
*
* @retval true Successfully gathered the file info time and updated
* "oFileInfo"
* @retval false The infos couldn't be requested.
*
* Example Usage:
* @code
* struct FileInfo& oFileInfo;
* bool bRes = oFTPClient.GetFileTime("pictures/muahahaha.jpg", tFileTime);
* if (bRes) { assert(oFileInfo.tFileMTime > 0); assert(oFileInfo.dFileSize >
* 0); } std::cout << ctime(oFileInfo.tFileMTime) << std::endl; // Sat Aug 06
* 15:04:45 2016
* @endcode
*/
bool CFTPClient::Info(const std::string &strRemoteFile, struct FileInfo &oFileInfo) const {
if (strRemoteFile.empty()) return false;
if (!m_pCurlSession) {
if (m_eSettingsFlags & ENABLE_LOG) m_oLog(LOG_ERROR_CURL_NOT_INIT_MSG);
return false;
}
// Reset is mandatory to avoid bad surprises
curl_easy_reset(m_pCurlSession);
bool bRes = false;
oFileInfo.tFileMTime = 0;
oFileInfo.dFileSize = 0.0;
curl_easy_setopt(m_pCurlSession, CURLOPT_URL, ParseURL(strRemoteFile).c_str());
/* No download if the file */
curl_easy_setopt(m_pCurlSession, CURLOPT_NOBODY, 1L);
/* Ask for filetime */
curl_easy_setopt(m_pCurlSession, CURLOPT_FILETIME, 1L);
/* No header output: TODO 14.1 http-style HEAD output for ftp */
curl_easy_setopt(m_pCurlSession, CURLOPT_HEADERFUNCTION, ThrowAwayCallback);
curl_easy_setopt(m_pCurlSession, CURLOPT_HEADER, 0L);
CURLcode res = Perform();
if (CURLE_OK == res) {
long lFileTime = -1;
res = curl_easy_getinfo(m_pCurlSession, CURLINFO_FILETIME, &lFileTime);
if (CURLE_OK == res && lFileTime >= 0) {
oFileInfo.tFileMTime = static_cast<time_t>(lFileTime);
bRes = true;
}
res = curl_easy_getinfo(m_pCurlSession, CURLINFO_CONTENT_LENGTH_DOWNLOAD, &oFileInfo.dFileSize);
if (CURLE_OK == res && oFileInfo.dFileSize > 0.0) {
bRes = true;
}
} else if (m_eSettingsFlags & ENABLE_LOG)
m_oLog(StringFormat(LOG_ERROR_CURL_FILETIME_FORMAT, strRemoteFile.c_str(), res, curl_easy_strerror(res)));
return bRes;
}
/**
* @brief lists a remote folder
* the list can contain only names or can be detailed
* entries/names will be separated with LF ('\n')
*
* @param [in] strRemoteFolder URL of the remote location to be listed encoded in UTF-8 format.
* @param [out] strList will contain the directory entries (detailed or not) encoded in UTF-8 format.
* @param [in] bOnlyNames detailed list or only names
*
* @retval true Successfully listed the remote folder and updated FtpFiles.
* @retval false The remote folder couldn't be listed.
*
* Example Usage:
* @code
* std::string strList;
* m_pFTPClient->GetFileList("/", strList, false);
* // lists the root of the remote FTP server with all the infos.
* @endcode
*/
bool CFTPClient::List(const std::string &strRemoteFolder, std::string &strList, bool bOnlyNames /* = true */) const {
if (strRemoteFolder.empty()) return false;
if (!m_pCurlSession) {
if (m_eSettingsFlags & ENABLE_LOG) m_oLog(LOG_ERROR_CURL_NOT_INIT_MSG);
return false;
}
// Reset is mandatory to avoid bad surprises
curl_easy_reset(m_pCurlSession);
bool bRet = false;
std::string strRemoteFile = ParseURL(strRemoteFolder);
curl_easy_setopt(m_pCurlSession, CURLOPT_URL, strRemoteFile.c_str());
if (bOnlyNames) curl_easy_setopt(m_pCurlSession, CURLOPT_DIRLISTONLY, 1L);
curl_easy_setopt(m_pCurlSession, CURLOPT_WRITEFUNCTION, WriteInStringCallback);
curl_easy_setopt(m_pCurlSession, CURLOPT_WRITEDATA, &strList);
CURLcode res = Perform();
if (CURLE_OK == res)
bRet = true;
else if (m_eSettingsFlags & ENABLE_LOG)
m_oLog(StringFormat(LOG_ERROR_CURL_FILELIST_FORMAT, strRemoteFolder.c_str(), res, curl_easy_strerror(res)));
return bRet;
}
/**
* @brief downloads a remote file
*
* @param [in] strLocalFile complete path of the downloaded file encoded in UTF-8 format.
* @param [in] strRemoteFile URL of the remote file encoded in UTF-8 format.
*
* @retval true Successfully downloaded the file.
* @retval false The file couldn't be downloaded. Check the log messages for
* more information.
*
* Example Usage:
* @code
* m_pFTPClient->DownloadFile("C:\\Items_To_Upload\\imagination.jpg",
* "upload/pictures/imagination.jpg");
* @endcode
*/
bool CFTPClient::DownloadFile(const std::string &strLocalFile, const std::string &strRemoteFile) const {
if (strLocalFile.empty() || strRemoteFile.empty()) return false;
if (!m_pCurlSession) {
if (m_eSettingsFlags & ENABLE_LOG) m_oLog(LOG_ERROR_CURL_NOT_INIT_MSG);
return false;
}
// Reset is mandatory to avoid bad surprises
curl_easy_reset(m_pCurlSession);
bool bRet = false;
std::string strFile = ParseURL(strRemoteFile);
std::ofstream ofsOutput;
ofsOutput.open(
#ifdef LINUX
strLocalFile, // UTF-8
#else
Utf8ToUtf16(strLocalFile),
#endif
std::ofstream::out | std::ofstream::binary | std::ofstream::trunc);
if (ofsOutput) {
curl_easy_setopt(m_pCurlSession, CURLOPT_URL, strFile.c_str());
curl_easy_setopt(m_pCurlSession, CURLOPT_WRITEFUNCTION, WriteToFileCallback);
curl_easy_setopt(m_pCurlSession, CURLOPT_WRITEDATA, &ofsOutput);
CURLcode res = Perform();
if (res != CURLE_OK) {
if (m_eSettingsFlags & ENABLE_LOG)
m_oLog(StringFormat(LOG_ERROR_CURL_GETFILE_FORMAT, m_strServer.c_str(), strRemoteFile.c_str(), res, curl_easy_strerror(res)));
} else
bRet = true;
ofsOutput.close();
if (!bRet) remove(strLocalFile.c_str());
} else if (m_eSettingsFlags & ENABLE_LOG)
m_oLog(LOG_ERROR_FILE_GETFILE_FORMAT);
return bRet;
}
/**
* @brief downloads a remote file to memory
*
* @param [in] strRemoteFile URI of remote file encoded in UTF-8 format.
* @param [out] data vector of bytes
*
* @retval true Successfully downloaded the file.
* @retval false The file couldn't be downloaded. Check the log messages for
* more information.
*/
bool CFTPClient::DownloadFile(const std::string &strRemoteFile, std::vector<char> &data) const {
if (strRemoteFile.empty()) return false;
if (!m_pCurlSession) {
if (m_eSettingsFlags & ENABLE_LOG) m_oLog(LOG_ERROR_CURL_NOT_INIT_MSG);
return false;
}
curl_easy_reset(m_pCurlSession);
std::string strFile = ParseURL(strRemoteFile);
data.clear();
curl_easy_setopt(m_pCurlSession, CURLOPT_URL, strFile.c_str());
curl_easy_setopt(m_pCurlSession, CURLOPT_WRITEFUNCTION, WriteToMemory);
curl_easy_setopt(m_pCurlSession, CURLOPT_WRITEDATA, &data);
CURLcode res = Perform();
if (res != CURLE_OK) {
if (m_eSettingsFlags & ENABLE_LOG)
m_oLog(StringFormat(LOG_ERROR_CURL_GETFILE_FORMAT, m_strServer.c_str(), strRemoteFile.c_str(), res, curl_easy_strerror(res)));
return false;
} else
return true;
}
/**
* @brief downloads all elements according that match the wildcarded URL
*
* @param [in] strLocalFile Complete path where the elements will be downloaded encoded in UTF-8 format.
* @param [in] strRemoteWildcard Wildcarded pattern to be downloaded encoded in UTF-8 format.
*
* @retval true All the elements have been downloaded.
* @retval false Some or all files or dir have not been downloaded or resp.
* created.
*
* Example Usage:
* @code
* m_pFTPClient->DownloadWildcard("", "");
* @endcode
*/
bool CFTPClient::DownloadWildcard(const std::string &strLocalDir, const std::string &strRemoteWildcard) const {
if (strLocalDir.empty() || strRemoteWildcard.empty()) return false;
if (!m_pCurlSession) {
if (m_eSettingsFlags & ENABLE_LOG) m_oLog(LOG_ERROR_CURL_NOT_INIT_MSG);
return false;
}
// Reset is mandatory to avoid bad surprises
curl_easy_reset(m_pCurlSession);
bool bRet = false;
WildcardTransfersCallbackData data;
#ifdef LINUX
data.strOutputPath = strLocalDir + ((strLocalDir.back() != '/') ? "/" : "");
#else
data.strOutputPath = strLocalDir + ((strLocalDir.back() != '\\') ? "\\" : "");
#endif
std::string strPattern = ParseURL(strRemoteWildcard);
struct stat info;
if (stat(data.strOutputPath.c_str(), &info) == 0 && (info.st_mode & S_IFDIR)) // S_ISDIR() doesn't exist on windows
{
/* 0. turn on wildcard matching */
curl_easy_setopt(m_pCurlSession, CURLOPT_WILDCARDMATCH, 1L);
/* 1. callback is called before download of concrete file started */
curl_easy_setopt(m_pCurlSession, CURLOPT_CHUNK_BGN_FUNCTION, FileIsComingCallback);
/* 2. this callback will write contents into files */
curl_easy_setopt(m_pCurlSession, CURLOPT_WRITEFUNCTION, WriteItCallback);
/* 3. callback is called after data from the file have been transferred */
curl_easy_setopt(m_pCurlSession, CURLOPT_CHUNK_END_FUNCTION, FileIsDownloadedCallback);
/* put transfer data into callbacks */
curl_easy_setopt(m_pCurlSession, CURLOPT_CHUNK_DATA, &data);
curl_easy_setopt(m_pCurlSession, CURLOPT_WRITEDATA, &data);
/* curl_easy_setopt(m_pCurlSession, CURLOPT_VERBOSE, 1L); */
/* set an URL containing wildcard pattern (only in the last part) */
curl_easy_setopt(m_pCurlSession, CURLOPT_URL, strPattern.c_str());
/* and start transfer! */
CURLcode res = Perform();
/* in case we have an empty FTP folder, error 78 will be returned */
if (res != CURLE_OK && res != CURLE_REMOTE_FILE_NOT_FOUND) {
if (m_eSettingsFlags & ENABLE_LOG)
m_oLog(
StringFormat(LOG_ERROR_CURL_GETWILD_FORMAT, m_strServer.c_str(), strRemoteWildcard.c_str(), res, curl_easy_strerror(res)));
}
/* folders need to be copied integrally */
else if (!data.vecDirList.empty() && strRemoteWildcard.back() == '*') {
std::string strBaseUrl = strRemoteWildcard.substr(0, strRemoteWildcard.length() - 1);
if (!strBaseUrl.empty() && strBaseUrl.back() != '/') strBaseUrl += "/";
// recursively download directories
bRet = true;
for (const auto &Dir : data.vecDirList) {
if ((Dir == ".") || (Dir == "..")) continue;
if (!DownloadWildcard(data.strOutputPath + Dir, strBaseUrl + Dir + "/*")) {
m_oLog(
StringFormat(LOG_ERROR_CURL_GETWILD_REC_FORMAT, (strBaseUrl + Dir + "/*").c_str(), (data.strOutputPath + Dir).c_str()));
bRet = false;
}
}
} else
bRet = true;
} else if (m_eSettingsFlags & ENABLE_LOG)
m_oLog(StringFormat(LOG_ERROR_DIR_GETWILD_FORMAT, data.strOutputPath.c_str()));
return bRet;
}
/**
* @brief uploads a local file to a remote folder.
*
* @param [in] strLocalFile Complete path of the file to upload encoded in UTF-8 format.
* @param [in] strRemoteFile Complete URN of the remote location (with the file
* name) encoded in UTF-8 format.
* @param [in] bCreateDir Enable or disable creation of remote missing
* directories contained in the URN.
*
* @retval true Successfully uploaded the file.
* @retval false The file couldn't be uploaded. Check the log messages for more
* information.
*
* Example Usage:
* @code
* m_pFTPClient->UploadFile("C:\\Items_To_Upload\\imagination.jpg",
* "upload/pictures/imagination.jpg", true);
* // C:\\Items_To_Upload\\imagination.jpg will be uploaded to
* ftp://127.0.0.1/upload/pictures/imagination.jpg
* // "upload" and "pictures" remote directories will be created
* // if they don't exist and if the connected user has the proper rights.
* @endcode
*/
bool CFTPClient::UploadFile(const std::string &strLocalFile, const std::string &strRemoteFile, const bool &bCreateDir) const {
if (strLocalFile.empty() || strRemoteFile.empty()) return false;
if (!m_pCurlSession) {
if (m_eSettingsFlags & ENABLE_LOG) m_oLog(LOG_ERROR_CURL_NOT_INIT_MSG);
return false;
}
// Reset is mandatory to avoid bad surprises
curl_easy_reset(m_pCurlSession);
std::ifstream InputFile;
std::string strLocalRemoteFile = ParseURL(strRemoteFile);
struct stat file_info;
bool bRes = false;
/* get the file size of the local file */
#ifdef LINUX
if (stat(strLocalFile.c_str(), &file_info) == 0) {
InputFile.open(strLocalFile, std::ifstream::in | std::ifstream::binary);
#else
static_assert(sizeof(struct stat) == sizeof(struct _stat64i32), "Oh oh !");
std::wstring wstrLocalFile = Utf8ToUtf16(strLocalFile);
if (_wstat64i32(wstrLocalFile.c_str(), reinterpret_cast<struct _stat64i32*>(&file_info)) == 0) {
InputFile.open(wstrLocalFile, std::ifstream::in | std::ifstream::binary);
#endif
if (!InputFile) {
if (m_eSettingsFlags & ENABLE_LOG) m_oLog(StringFormat(LOG_ERROR_FILE_UPLOAD_FORMAT, strLocalFile.c_str()));
return false;
}
/* specify target */
curl_easy_setopt(m_pCurlSession, CURLOPT_URL, strLocalRemoteFile.c_str());
/* we want to use our own read function */
curl_easy_setopt(m_pCurlSession, CURLOPT_READFUNCTION, ReadFromFileCallback);
/* now specify which file to upload */
curl_easy_setopt(m_pCurlSession, CURLOPT_READDATA, &InputFile);
/* Set the size of the file to upload (optional). If you give a *_LARGE
option you MUST make sure that the type of the passed-in argument is a
curl_off_t. If you use CURLOPT_INFILESIZE (without _LARGE) you must
make sure that to pass in a type 'long' argument. */
curl_easy_setopt(m_pCurlSession, CURLOPT_INFILESIZE_LARGE, static_cast<curl_off_t>(file_info.st_size));
/* enable uploading */
curl_easy_setopt(m_pCurlSession, CURLOPT_UPLOAD, 1L);
if (bCreateDir) curl_easy_setopt(m_pCurlSession, CURLOPT_FTP_CREATE_MISSING_DIRS, CURLFTP_CREATE_DIR);
// TODO add the possibility to rename the file upon upload finish....
CURLcode res = Perform();
if (res != CURLE_OK) {
if (m_eSettingsFlags & ENABLE_LOG)
m_oLog(StringFormat(LOG_ERROR_CURL_UPLOAD_FORMAT, strLocalFile.c_str(), res, curl_easy_strerror(res)));
} else
bRes = true;
}
InputFile.close();
return bRes;
}
/**
* @brief performs the chosen FTP request
* sets up the common settings (Timeout, proxy,...)
*
*
* @retval true Successfully performed the request.
* @retval false The request couldn't be performed.
*
*/
CURLcode CFTPClient::Perform() const {
CURLcode res = CURLE_OK;
curl_easy_setopt(m_pCurlSession, CURLOPT_PORT, m_uPort);
curl_easy_setopt(m_pCurlSession, CURLOPT_USERPWD, (m_strUserName + ":" + m_strPassword).c_str());
if (m_bActive) curl_easy_setopt(m_pCurlSession, CURLOPT_FTPPORT, "-");
if (m_iCurlTimeout > 0) {
curl_easy_setopt(m_pCurlSession, CURLOPT_TIMEOUT, m_iCurlTimeout);
}
if (m_bNoSignal) {
curl_easy_setopt(m_pCurlSession, CURLOPT_NOSIGNAL, 1L);
}
if (!m_strProxy.empty()) {
curl_easy_setopt(m_pCurlSession, CURLOPT_PROXY, m_strProxy.c_str());
curl_easy_setopt(m_pCurlSession, CURLOPT_HTTPPROXYTUNNEL, 1L);
// use only plain PASV
if (!m_bActive) {
curl_easy_setopt(m_pCurlSession, CURLOPT_FTP_USE_EPSV, 1L);
}
}
if (m_bProgressCallbackSet) {
curl_easy_setopt(m_pCurlSession, CURLOPT_PROGRESSFUNCTION, *GetProgressFnCallback());
curl_easy_setopt(m_pCurlSession, CURLOPT_PROGRESSDATA, &m_ProgressStruct);
curl_easy_setopt(m_pCurlSession, CURLOPT_NOPROGRESS, 0L);
}
if (m_eFtpProtocol == FTP_PROTOCOL::FTPS || m_eFtpProtocol == FTP_PROTOCOL::FTPES)
/* We activate SSL and we require it for both control and data */
curl_easy_setopt(m_pCurlSession, CURLOPT_USE_SSL, CURLUSESSL_ALL);
if (m_eFtpProtocol == FTP_PROTOCOL::SFTP && m_eSettingsFlags & ENABLE_SSH_AGENT)
/* We activate ssh agent. For this to work you need
to have ssh-agent running (type set | grep SSH_AGENT to check) or
pageant on Windows (there is an icon in systray if so) */
curl_easy_setopt(m_pCurlSession, CURLOPT_SSH_AUTH_TYPES, CURLSSH_AUTH_AGENT);
// SSL
if (!m_strSSLCertFile.empty()) curl_easy_setopt(m_pCurlSession, CURLOPT_SSLCERT, m_strSSLCertFile.c_str());
if (!m_strSSLKeyFile.empty()) curl_easy_setopt(m_pCurlSession, CURLOPT_SSLKEY, m_strSSLKeyFile.c_str());
if (!m_strSSLKeyPwd.empty()) curl_easy_setopt(m_pCurlSession, CURLOPT_KEYPASSWD, m_strSSLKeyPwd.c_str());
curl_easy_setopt(m_pCurlSession, CURLOPT_SSL_VERIFYHOST, (m_bInsecure) ? 0L : 2L);
curl_easy_setopt(m_pCurlSession, CURLOPT_SSL_VERIFYPEER, (m_bInsecure) ? 0L : 1L);
#ifdef DEBUG_CURL
StartCurlDebug();
#endif
// Perform the requested operation
res = curl_easy_perform(m_pCurlSession);
#ifdef DEBUG_CURL
EndCurlDebug();
#endif
return res;
}
// STRING HELPERS
/**
* @brief returns a formatted string
*
* @param [in] strFormat string with one or many format specifiers
* @param [in] parameters to be placed in the format specifiers of strFormat
*
* @retval string formatted string
*/
std::string CFTPClient::StringFormat(std::string strFormat, ...) {
va_list args;
va_start(args, strFormat);
size_t len = std::vsnprintf(NULL, 0, strFormat.c_str(), args);
va_end(args);
std::vector<char> vec(len + 1);
va_start(args, strFormat);
std::vsnprintf(&vec[0], len + 1, strFormat.c_str(), args);
va_end(args);
return &vec[0];
}
void CFTPClient::ReplaceString(std::string &strSubject, const std::string &strSearch, const std::string &strReplace) {
if (strSearch.empty()) return;
size_t pos = 0;
while ((pos = strSubject.find(strSearch, pos)) != std::string::npos) {
strSubject.replace(pos, strSearch.length(), strReplace);
pos += strReplace.length();
}
}
/*
void CFTPClient::ReplaceString(std::string& str, const std::string& from, const
std::string& to)
{
if(from.empty())
return;
string wsRet;
wsRet.reserve(str.length());
size_t start_pos = 0, pos;
while((pos = str.find(from, start_pos)) != std::string::npos)
{
wsRet += str.substr(start_pos, pos - start_pos);
wsRet += to;
pos += from.length();
start_pos = pos;
}
wsRet += str.substr(start_pos);
str.swap(wsRet); // faster than str = wsRet;
}
*/
// CURL CALLBACKS
size_t CFTPClient::ThrowAwayCallback(void *ptr, size_t size, size_t nmemb, void *data) {
/* we are not interested in the headers itself,
so we only return the size we would have saved ... */
UNUSED(ptr)
UNUSED(data)