diff options
Diffstat (limited to 'kioslave/sftp/kio_sftp.cpp')
| -rw-r--r-- | kioslave/sftp/kio_sftp.cpp | 2286 |
1 files changed, 2286 insertions, 0 deletions
diff --git a/kioslave/sftp/kio_sftp.cpp b/kioslave/sftp/kio_sftp.cpp new file mode 100644 index 000000000..e6aaaf532 --- /dev/null +++ b/kioslave/sftp/kio_sftp.cpp @@ -0,0 +1,2286 @@ +/*************************************************************************** + sftp.cpp - description + ------------------- + begin : Fri Jun 29 23:45:40 CDT 2001 + copyright : (C) 2001 by Lucas Fisher + email : ljfisher@purdue.edu + ***************************************************************************/ + +/*************************************************************************** + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + ***************************************************************************/ + +/* +DEBUGGING +We are pretty much left with kdDebug messages for debugging. We can't use a gdb +as described in the ioslave DEBUG.howto because kdeinit has to run in a terminal. +Ssh will detect this terminal and ask for a password there, but will just get garbage. +So we can't connect. +*/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <fcntl.h> + +#include <qcstring.h> +#include <qstring.h> +#include <qobject.h> +#include <qstrlist.h> +#include <qfile.h> +#include <qbuffer.h> + +#include <stdlib.h> +#include <unistd.h> +#include <signal.h> +#include <errno.h> +#include <ctype.h> +#include <time.h> +#include <netdb.h> +#include <string.h> + +#include <netinet/in.h> +#include <arpa/inet.h> +#include <sys/time.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <sys/wait.h> + +#include <kapplication.h> +#include <kuser.h> +#include <kdebug.h> +#include <kmessagebox.h> +#include <kinstance.h> +#include <kglobal.h> +#include <kstandarddirs.h> +#include <klocale.h> +#include <kurl.h> +#include <kio/ioslave_defaults.h> +#include <kmimetype.h> +#include <kmimemagic.h> +#include <klargefile.h> +#include <kremoteencoding.h> + +#include "sftp.h" +#include "kio_sftp.h" +#include "atomicio.h" +#include "sftpfileattr.h" +#include "ksshprocess.h" + + +using namespace KIO; +extern "C" +{ + int KDE_EXPORT kdemain( int argc, char **argv ) + { + KInstance instance( "kio_sftp" ); + + kdDebug(KIO_SFTP_DB) << "*** Starting kio_sftp " << endl; + + if (argc != 4) { + kdDebug(KIO_SFTP_DB) << "Usage: kio_sftp protocol domain-socket1 domain-socket2" << endl; + exit(-1); + } + + sftpProtocol slave(argv[2], argv[3]); + slave.dispatchLoop(); + + kdDebug(KIO_SFTP_DB) << "*** kio_sftp Done" << endl; + return 0; + } +} + + +/* + * This helper handles some special issues (blocking and interrupted + * system call) when writing to a file handle. + * + * @return 0 on success or an error code on failure (ERR_COULD_NOT_WRITE, + * ERR_DISK_FULL, ERR_CONNECTION_BROKEN). + */ +static int writeToFile (int fd, const char *buf, size_t len) +{ + while (len > 0) + { + ssize_t written = ::write(fd, buf, len); + if (written >= 0) + { + buf += written; + len -= written; + continue; + } + + switch(errno) + { + case EINTR: + continue; + case EPIPE: + return ERR_CONNECTION_BROKEN; + case ENOSPC: + return ERR_DISK_FULL; + default: + return ERR_COULD_NOT_WRITE; + } + } + return 0; +} + +sftpProtocol::sftpProtocol(const QCString &pool_socket, const QCString &app_socket) + : SlaveBase("kio_sftp", pool_socket, app_socket), + mConnected(false), mPort(-1), mMsgId(0) { + kdDebug(KIO_SFTP_DB) << "sftpProtocol(): pid = " << getpid() << endl; +} + + +sftpProtocol::~sftpProtocol() { + kdDebug(KIO_SFTP_DB) << "~sftpProtocol(): pid = " << getpid() << endl; + closeConnection(); +} + +/** + * Type is a sftp packet type found in .sftp.h'. + * Example: SSH2_FXP_READLINK, SSH2_FXP_RENAME, etc. + * + * Returns true if the type is supported by the sftp protocol + * version negotiated by the client and server (sftpVersion). + */ +bool sftpProtocol::isSupportedOperation(int type) { + switch (type) { + case SSH2_FXP_VERSION: + case SSH2_FXP_STATUS: + case SSH2_FXP_HANDLE: + case SSH2_FXP_DATA: + case SSH2_FXP_NAME: + case SSH2_FXP_ATTRS: + case SSH2_FXP_INIT: + case SSH2_FXP_OPEN: + case SSH2_FXP_CLOSE: + case SSH2_FXP_READ: + case SSH2_FXP_WRITE: + case SSH2_FXP_LSTAT: + case SSH2_FXP_FSTAT: + case SSH2_FXP_SETSTAT: + case SSH2_FXP_FSETSTAT: + case SSH2_FXP_OPENDIR: + case SSH2_FXP_READDIR: + case SSH2_FXP_REMOVE: + case SSH2_FXP_MKDIR: + case SSH2_FXP_RMDIR: + case SSH2_FXP_REALPATH: + case SSH2_FXP_STAT: + return true; + case SSH2_FXP_RENAME: + return sftpVersion >= 2 ? true : false; + case SSH2_FXP_EXTENDED: + case SSH2_FXP_EXTENDED_REPLY: + case SSH2_FXP_READLINK: + case SSH2_FXP_SYMLINK: + return sftpVersion >= 3 ? true : false; + default: + kdDebug(KIO_SFTP_DB) << "isSupportedOperation(type:" + << type << "): unrecognized operation type" << endl; + break; + } + + return false; +} + +void sftpProtocol::copy(const KURL &src, const KURL &dest, int permissions, bool overwrite) +{ + kdDebug(KIO_SFTP_DB) << "copy(): " << src << " -> " << dest << endl; + + bool srcLocal = src.isLocalFile(); + bool destLocal = dest.isLocalFile(); + + if ( srcLocal && !destLocal ) // Copy file -> sftp + sftpCopyPut(src, dest, permissions, overwrite); + else if ( destLocal && !srcLocal ) // Copy sftp -> file + sftpCopyGet(dest, src, permissions, overwrite); + else + error(ERR_UNSUPPORTED_ACTION, QString::null); +} + +void sftpProtocol::sftpCopyGet(const KURL& dest, const KURL& src, int mode, bool overwrite) +{ + kdDebug(KIO_SFTP_DB) << "sftpCopyGet(): " << src << " -> " << dest << endl; + + // Attempt to establish a connection... + openConnection(); + if( !mConnected ) + return; + + KDE_struct_stat buff_orig; + QCString dest_orig ( QFile::encodeName(dest.path()) ); + bool origExists = (KDE_lstat( dest_orig.data(), &buff_orig ) != -1); + + if (origExists) + { + if (S_ISDIR(buff_orig.st_mode)) + { + error(ERR_IS_DIRECTORY, dest.prettyURL()); + return; + } + + if (!overwrite) + { + error(ERR_FILE_ALREADY_EXIST, dest.prettyURL()); + return; + } + } + + KIO::filesize_t offset = 0; + QCString dest_part ( dest_orig + ".part" ); + + int fd = -1; + bool partExists = false; + bool markPartial = config()->readBoolEntry("MarkPartial", true); + + if (markPartial) + { + KDE_struct_stat buff_part; + partExists = (KDE_stat( dest_part.data(), &buff_part ) != -1); + + if (partExists && buff_part.st_size > 0 && S_ISREG(buff_part.st_mode)) + { + if (canResume( buff_part.st_size )) + { + offset = buff_part.st_size; + kdDebug(KIO_SFTP_DB) << "sftpCopyGet: Resuming @ " << offset << endl; + } + } + + if (offset > 0) + { + fd = KDE_open(dest_part.data(), O_RDWR); + offset = KDE_lseek(fd, 0, SEEK_END); + if (offset == 0) + { + error(ERR_CANNOT_RESUME, dest.prettyURL()); + return; + } + } + else + { + // Set up permissions properly, based on what is done in file io-slave + int openFlags = (O_CREAT | O_TRUNC | O_WRONLY); + int initialMode = (mode == -1) ? 0666 : (mode | S_IWUSR); + fd = KDE_open(dest_part.data(), openFlags, initialMode); + } + } + else + { + // Set up permissions properly, based on what is done in file io-slave + int openFlags = (O_CREAT | O_TRUNC | O_WRONLY); + int initialMode = (mode == -1) ? 0666 : (mode | S_IWUSR); + fd = KDE_open(dest_orig.data(), openFlags, initialMode); + } + + if(fd == -1) + { + kdDebug(KIO_SFTP_DB) << "sftpCopyGet: Unable to open (" << fd << ") for writting." << endl; + if (errno == EACCES) + error (ERR_WRITE_ACCESS_DENIED, dest.prettyURL()); + else + error (ERR_CANNOT_OPEN_FOR_WRITING, dest.prettyURL()); + return; + } + + Status info = sftpGet(src, offset, fd); + if ( info.code != 0 ) + { + // Should we keep the partially downloaded file ?? + KIO::filesize_t size = config()->readNumEntry("MinimumKeepSize", DEFAULT_MINIMUM_KEEP_SIZE); + if (info.size < size) + ::remove(dest_part.data()); + + error(info.code, info.text); + return; + } + + if (::close(fd) != 0) + { + error(ERR_COULD_NOT_WRITE, dest.prettyURL()); + return; + } + + // + if (markPartial) + { + if (::rename(dest_part.data(), dest_orig.data()) != 0) + { + error (ERR_CANNOT_RENAME_PARTIAL, dest_part); + return; + } + } + + data(QByteArray()); + kdDebug(KIO_SFTP_DB) << "sftpCopyGet(): emit finished()" << endl; + finished(); +} + +sftpProtocol::Status sftpProtocol::sftpGet( const KURL& src, KIO::filesize_t offset, int fd ) +{ + int code; + sftpFileAttr attr(remoteEncoding()); + + Status res; + res.code = 0; + res.size = 0; + + kdDebug(KIO_SFTP_DB) << "sftpGet(): " << src << endl; + + // stat the file first to get its size + if( (code = sftpStat(src, attr)) != SSH2_FX_OK ) { + return doProcessStatus(code, src.prettyURL()); + } + + // We cannot get file if it is a directory + if( attr.fileType() == S_IFDIR ) { + res.text = src.prettyURL(); + res.code = ERR_IS_DIRECTORY; + return res; + } + + KIO::filesize_t fileSize = attr.fileSize(); + Q_UINT32 pflags = SSH2_FXF_READ; + attr.clear(); + + QByteArray handle; + if( (code = sftpOpen(src, pflags, attr, handle)) != SSH2_FX_OK ) { + res.text = src.prettyURL(); + res.code = ERR_CANNOT_OPEN_FOR_READING; + return res; + } + + // needed for determining mimetype + // note: have to emit mimetype before emitting totalsize. + QByteArray buff; + QByteArray mimeBuffer; + + unsigned int oldSize; + bool foundMimetype = false; + + // How big should each data packet be? Definitely not bigger than 64kb or + // you will overflow the 2 byte size variable in a sftp packet. + Q_UINT32 len = 60*1024; + code = SSH2_FX_OK; + + kdDebug(KIO_SFTP_DB) << "sftpGet(): offset = " << offset << endl; + while( code == SSH2_FX_OK ) { + if( (code = sftpRead(handle, offset, len, buff)) == SSH2_FX_OK ) { + offset += buff.size(); + + // save data for mimetype. Pretty much follows what is in the ftp ioslave + if( !foundMimetype ) { + oldSize = mimeBuffer.size(); + mimeBuffer.resize(oldSize + buff.size()); + memcpy(mimeBuffer.data()+oldSize, buff.data(), buff.size()); + + if( mimeBuffer.size() > 1024 || offset == fileSize ) { + // determine mimetype + KMimeMagicResult* result = + KMimeMagic::self()->findBufferFileType(mimeBuffer, src.fileName()); + kdDebug(KIO_SFTP_DB) << "sftpGet(): mimetype is " << + result->mimeType() << endl; + mimeType(result->mimeType()); + + // Always send the total size after emitting mime-type... + totalSize(fileSize); + + if (fd == -1) + data(mimeBuffer); + else + { + if ( (res.code=writeToFile(fd, mimeBuffer.data(), mimeBuffer.size())) != 0 ) + return res; + } + + processedSize(mimeBuffer.size()); + mimeBuffer.resize(0); + foundMimetype = true; + } + } + else { + if (fd == -1) + data(buff); + else + { + if ( (res.code= writeToFile(fd, buff.data(), buff.size())) != 0 ) + return res; + } + processedSize(offset); + } + } + + /* + Check if slave was killed. According to slavebase.h we need to leave + the slave methods as soon as possible if the slave is killed. This + allows the slave to be cleaned up properly. + */ + if( wasKilled() ) { + res.text = i18n("An internal error occurred. Please retry the request again."); + res.code = ERR_UNKNOWN; + return res; + } + } + + if( code != SSH2_FX_EOF ) { + res.text = src.prettyURL(); + res.code = ERR_COULD_NOT_READ; // return here or still send empty array to indicate end of read? + } + + res.size = offset; + sftpClose(handle); + processedSize (offset); + return res; +} + +void sftpProtocol::get(const KURL& url) { + kdDebug(KIO_SFTP_DB) << "get(): " << url << endl ; + + openConnection(); + if( !mConnected ) + return; + + // Get resume offset + Q_UINT64 offset = config()->readUnsignedLongNumEntry("resume"); + if( offset > 0 ) { + canResume(); + kdDebug(KIO_SFTP_DB) << "get(): canResume(), offset = " << offset << endl; + } + + Status info = sftpGet(url, offset); + + if (info.code != 0) + { + error(info.code, info.text); + return; + } + + data(QByteArray()); + kdDebug(KIO_SFTP_DB) << "get(): emit finished()" << endl; + finished(); +} + + +void sftpProtocol::setHost (const QString& h, int port, const QString& user, const QString& pass) +{ + kdDebug(KIO_SFTP_DB) << "setHost(): " << user << "@" << h << ":" << port << endl; + + if( mHost != h || mPort != port || user != mUsername || mPassword != pass ) + closeConnection(); + + mHost = h; + + if( port > 0 ) + mPort = port; + else { + struct servent *pse; + if( (pse = getservbyname("ssh", "tcp") ) == NULL ) + mPort = 22; + else + mPort = ntohs(pse->s_port); + } + + mUsername = user; + mPassword = pass; + + if (user.isEmpty()) + { + KUser u; + mUsername = u.loginName(); + } +} + + +void sftpProtocol::openConnection() { + + if(mConnected) + return; + + kdDebug(KIO_SFTP_DB) << "openConnection(): " << mUsername << "@" + << mHost << ":" << mPort << endl; + + infoMessage( i18n("Opening SFTP connection to host <b>%1:%2</b>").arg(mHost).arg(mPort)); + + if( mHost.isEmpty() ) { + kdDebug(KIO_SFTP_DB) << "openConnection(): Need hostname..." << endl; + error(ERR_UNKNOWN_HOST, i18n("No hostname specified")); + return; + } + + //////////////////////////////////////////////////////////////////////////// + // Setup AuthInfo for use with password caching and the + // password dialog box. + AuthInfo info; + info.url.setProtocol("sftp"); + info.url.setHost(mHost); + info.url.setPort(mPort); + info.url.setUser(mUsername); + info.caption = i18n("SFTP Login"); + info.comment = "sftp://" + mHost + ":" + QString::number(mPort); + info.commentLabel = i18n("site:"); + info.username = mUsername; + info.keepPassword = true; + + /////////////////////////////////////////////////////////////////////////// + // Check for cached authentication info if a username AND password were + // not specified in setHost(). + if( mUsername.isEmpty() && mPassword.isEmpty() ) { + kdDebug(KIO_SFTP_DB) << "openConnection(): checking cache " + << "info.username = " << info.username + << ", info.url = " << info.url.prettyURL() << endl; + + if( checkCachedAuthentication(info) ) { + mUsername = info.username; + mPassword = info.password; + } + } + + /////////////////////////////////////////////////////////////////////////// + // Now setup our ssh options. If we found a cached username + // and password we set the SSH_PASSWORD and SSH_USERNAME + // options right away. Otherwise we wait. The other options are + // necessary for running sftp over ssh. + KSshProcess::SshOpt opt; // a ssh option, this can be reused + KSshProcess::SshOptList opts; // list of SshOpts + KSshProcess::SshOptListIterator passwdIt; // points to the opt in opts that specifies the password + KSshProcess::SshOptListIterator usernameIt; + +// opt.opt = KSshProcess::SSH_VERBOSE; +// opts.append(opt); +// opts.append(opt); + + if( mPort != -1 ) { + opt.opt = KSshProcess::SSH_PORT; + opt.num = mPort; + opts.append(opt); + } + + opt.opt = KSshProcess::SSH_SUBSYSTEM; + opt.str = "sftp"; + opts.append(opt); + + opt.opt = KSshProcess::SSH_FORWARDX11; + opt.boolean = false; + opts.append(opt); + + opt.opt = KSshProcess::SSH_FORWARDAGENT; + opt.boolean = false; + opts.append(opt); + + opt.opt = KSshProcess::SSH_PROTOCOL; + opt.num = 2; + opts.append(opt); + + opt.opt = KSshProcess::SSH_HOST; + opt.str = mHost; + opts.append(opt); + + opt.opt = KSshProcess::SSH_ESCAPE_CHAR; + opt.num = -1; // don't use any escape character + opts.append(opt); + + // set the username and password if we have them + if( !mUsername.isEmpty() ) { + opt.opt = KSshProcess::SSH_USERNAME; + opt.str = mUsername; + usernameIt = opts.append(opt); + } + + if( !mPassword.isEmpty() ) { + opt.opt = KSshProcess::SSH_PASSWD; + opt.str = mPassword; + passwdIt = opts.append(opt); + } + + ssh.setOptions(opts); + ssh.printArgs(); + + /////////////////////////////////////////////////////////////////////////// + // Start the ssh connection process. + // + + int err; // error code from KSshProcess + QString msg; // msg for dialog box + QString caption; // dialog box caption + bool firstTime = true; + bool dlgResult; + + while( !(mConnected = ssh.connect()) ) { + err = ssh.error(); + kdDebug(KIO_SFTP_DB) << "openConnection(): " + "Got " << err << " from KSshProcess::connect()" << endl; + + switch(err) { + case KSshProcess::ERR_NEED_PASSWD: + case KSshProcess::ERR_NEED_PASSPHRASE: + // At this point we know that either we didn't set + // an username or password in the ssh options list, + // or what we did pass did not work. Therefore we + // must prompt the user. + if( err == KSshProcess::ERR_NEED_PASSPHRASE ) + info.prompt = i18n("Please enter your username and key passphrase."); + else + info.prompt = i18n("Please enter your username and password."); + + kdDebug(KIO_SFTP_DB) << "openConnection(): info.username = " << info.username + << ", info.url = " << info.url.prettyURL() << endl; + + if( firstTime ) + dlgResult = openPassDlg(info); + else + dlgResult = openPassDlg(info, i18n("Incorrect username or password")); + + if( dlgResult ) { + if( info.username.isEmpty() || info.password.isEmpty() ) { + error(ERR_COULD_NOT_AUTHENTICATE, + i18n("Please enter a username and password")); + continue; + } + } + else { + // user canceled or dialog failed to open + error(ERR_USER_CANCELED, QString::null); + kdDebug(KIO_SFTP_DB) << "openConnection(): user canceled, dlgResult = " << dlgResult << endl; + closeConnection(); + return; + } + + firstTime = false; + + // Check if the username has changed. SSH only accepts + // the username at startup. If the username has changed + // we must disconnect ssh, change the SSH_USERNAME + // option, and reset the option list. We will also set + // the password option so the user is not prompted for + // it again. + if( mUsername != info.username ) { + kdDebug(KIO_SFTP_DB) << "openConnection(): Username changed from " + << mUsername << " to " << info.username << endl; + + ssh.disconnect(); + + // if we haven't yet added the username + // or password option to the ssh options list then + // the iterators will be equal to the empty iterator. + // Create the opts now and add them to the opt list. + if( usernameIt == KSshProcess::SshOptListIterator() ) { + kdDebug(KIO_SFTP_DB) << "openConnection(): " + "Adding username to options list" << endl; + opt.opt = KSshProcess::SSH_USERNAME; + usernameIt = opts.append(opt); + } + + if( passwdIt == KSshProcess::SshOptListIterator() ) { + kdDebug(KIO_SFTP_DB) << "openConnection(): " + "Adding password to options list" << endl; + opt.opt = KSshProcess::SSH_PASSWD; + passwdIt = opts.append(opt); + } + + (*usernameIt).str = info.username; + (*passwdIt).str = info.password; + ssh.setOptions(opts); + ssh.printArgs(); + } + else { // just set the password + ssh.setPassword(info.password); + } + + mUsername = info.username; + mPassword = info.password; + + break; + + case KSshProcess::ERR_NEW_HOST_KEY: + caption = i18n("Warning: Cannot verify host's identity."); + msg = ssh.errorMsg(); + if( KMessageBox::Yes != messageBox(WarningYesNo, msg, caption) ) { + closeConnection(); + error(ERR_USER_CANCELED, QString::null); + return; + } + ssh.acceptHostKey(true); + break; + + case KSshProcess::ERR_DIFF_HOST_KEY: + caption = i18n("Warning: Host's identity changed."); + msg = ssh.errorMsg(); + if( KMessageBox::Yes != messageBox(WarningYesNo, msg, caption) ) { + closeConnection(); + error(ERR_USER_CANCELED, QString::null); + return; + } + ssh.acceptHostKey(true); + break; + + case KSshProcess::ERR_AUTH_FAILED: + infoMessage(i18n("Authentication failed.")); + error(ERR_COULD_NOT_LOGIN, i18n("Authentication failed.")); + return; + + case KSshProcess::ERR_AUTH_FAILED_NEW_KEY: + msg = ssh.errorMsg(); + error(ERR_COULD_NOT_LOGIN, msg); + return; + + case KSshProcess::ERR_AUTH_FAILED_DIFF_KEY: + msg = ssh.errorMsg(); + error(ERR_COULD_NOT_LOGIN, msg); + return; + + case KSshProcess::ERR_CLOSED_BY_REMOTE_HOST: + infoMessage(i18n("Connection failed.")); + caption = i18n("Connection closed by remote host."); + msg = ssh.errorMsg(); + messageBox(Information, msg, caption); + closeConnection(); + error(ERR_COULD_NOT_LOGIN, msg); + return; + + case KSshProcess::ERR_INTERACT: + case KSshProcess::ERR_INTERNAL: + case KSshProcess::ERR_UNKNOWN: + case KSshProcess::ERR_INVALID_STATE: + case KSshProcess::ERR_CANNOT_LAUNCH: + case KSshProcess::ERR_HOST_KEY_REJECTED: + default: + infoMessage(i18n("Connection failed.")); + caption = i18n("Unexpected SFTP error: %1").arg(err); + msg = ssh.errorMsg(); + messageBox(Information, msg, caption); + closeConnection(); + error(ERR_UNKNOWN, msg); + return; + } + } + + // catch all in case we did something wrong above + if( !mConnected ) { + error(ERR_INTERNAL, QString::null); + return; + } + + // Now send init packet. + kdDebug(KIO_SFTP_DB) << "openConnection(): Sending SSH2_FXP_INIT packet." << endl; + QByteArray p; + QDataStream packet(p, IO_WriteOnly); + packet << (Q_UINT32)5; // packet length + packet << (Q_UINT8) SSH2_FXP_INIT; // packet type + packet << (Q_UINT32)SSH2_FILEXFER_VERSION; // client version + + putPacket(p); + getPacket(p); + + QDataStream s(p, IO_ReadOnly); + Q_UINT32 version; + Q_UINT8 type; + s >> type; + kdDebug(KIO_SFTP_DB) << "openConnection(): Got type " << type << endl; + + if( type == SSH2_FXP_VERSION ) { + s >> version; + kdDebug(KIO_SFTP_DB) << "openConnection(): Got server version " << version << endl; + + // XXX Get extensions here + sftpVersion = version; + + /* Server should return lowest common version supported by + * client and server, but double check just in case. + */ + if( sftpVersion > SSH2_FILEXFER_VERSION ) { + error(ERR_UNSUPPORTED_PROTOCOL, + i18n("SFTP version %1").arg(version)); + closeConnection(); + return; + } + } + else { + error(ERR_UNKNOWN, i18n("Protocol error.")); + closeConnection(); + return; + } + + // Login succeeded! + infoMessage(i18n("Successfully connected to %1").arg(mHost)); + info.url.setProtocol("sftp"); + info.url.setHost(mHost); + info.url.setPort(mPort); + info.url.setUser(mUsername); + info.username = mUsername; + info.password = mPassword; + kdDebug(KIO_SFTP_DB) << "sftpProtocol(): caching info.username = " << info.username << + ", info.url = " << info.url.prettyURL() << endl; + cacheAuthentication(info); + mConnected = true; + connected(); + + mPassword.fill('x'); + info.password.fill('x'); + + return; +} + +void sftpProtocol::closeConnection() { + kdDebug(KIO_SFTP_DB) << "closeConnection()" << endl; + ssh.disconnect(); + mConnected = false; +} + +void sftpProtocol::sftpCopyPut(const KURL& src, const KURL& dest, int permissions, bool overwrite) { + + KDE_struct_stat buff; + QCString file (QFile::encodeName(src.path())); + + if (KDE_lstat(file.data(), &buff) == -1) { + error (ERR_DOES_NOT_EXIST, src.prettyURL()); + return; + } + + if (S_ISDIR (buff.st_mode)) { + error (ERR_IS_DIRECTORY, src.prettyURL()); + return; + } + + int fd = KDE_open (file.data(), O_RDONLY); + if (fd == -1) { + error (ERR_CANNOT_OPEN_FOR_READING, src.prettyURL()); + return; + } + + totalSize (buff.st_size); + + sftpPut (dest, permissions, false, overwrite, fd); + + // Close the file descriptor... + ::close( fd ); +} + +void sftpProtocol::sftpPut( const KURL& dest, int permissions, bool resume, bool overwrite, int fd ) { + + openConnection(); + if( !mConnected ) + return; + + kdDebug(KIO_SFTP_DB) << "sftpPut(): " << dest + << ", resume=" << resume + << ", overwrite=" << overwrite << endl; + + KURL origUrl( dest ); + sftpFileAttr origAttr(remoteEncoding()); + bool origExists = false; + + // Stat original (without part ext) to see if it already exists + int code = sftpStat(origUrl, origAttr); + + if( code == SSH2_FX_OK ) { + kdDebug(KIO_SFTP_DB) << "sftpPut(): <file> already exists" << endl; + + // Delete remote file if its size is zero + if( origAttr.fileSize() == 0 ) { + if( sftpRemove(origUrl, true) != SSH2_FX_OK ) { + error(ERR_CANNOT_DELETE_ORIGINAL, origUrl.prettyURL()); + return; + } + } + else { + origExists = true; + } + } + else if( code != SSH2_FX_NO_SUCH_FILE ) { + processStatus(code, origUrl.prettyURL()); + return; + } + + // Do not waste time/resources with more remote stat calls if the file exists + // and we weren't instructed to overwrite it... + if( origExists && !overwrite ) { + error(ERR_FILE_ALREADY_EXIST, origUrl.prettyURL()); + return; + } + + // Stat file with part ext to see if it already exists... + KURL partUrl( origUrl ); + partUrl.setFileName( partUrl.fileName() + ".part" ); + + Q_UINT64 offset = 0; + bool partExists = false; + bool markPartial = config()->readBoolEntry("MarkPartial", true); + + if( markPartial ) { + + sftpFileAttr partAttr(remoteEncoding()); + code = sftpStat(partUrl, partAttr); + + if( code == SSH2_FX_OK ) { + kdDebug(KIO_SFTP_DB) << "sftpPut(): .part file already exists" << endl; + partExists = true; + offset = partAttr.fileSize(); + + // If for some reason, both the original and partial files exist, + // skip resumption just like we would if the size of the partial + // file is zero... + if( origExists || offset == 0 ) + { + if( sftpRemove(partUrl, true) != SSH2_FX_OK ) { + error(ERR_CANNOT_DELETE_PARTIAL, partUrl.prettyURL()); + return; + } + + if( sftpRename(origUrl, partUrl) != SSH2_FX_OK ) { + error(ERR_CANNOT_RENAME_ORIGINAL, origUrl.prettyURL()); + return; + } + + offset = 0; + } + else if( !overwrite && !resume ) { + if (fd != -1) + resume = (KDE_lseek(fd, offset, SEEK_SET) != -1); + else + resume = canResume( offset ); + + kdDebug(KIO_SFTP_DB) << "sftpPut(): can resume = " << resume + << ", offset = " << offset; + + if( !resume ) { + error(ERR_FILE_ALREADY_EXIST, partUrl.prettyURL()); + return; + } + } + else { + offset = 0; + } + } + else if( code == SSH2_FX_NO_SUCH_FILE ) { + if( origExists && sftpRename(origUrl, partUrl) != SSH2_FX_OK ) { + error(ERR_CANNOT_RENAME_ORIGINAL, origUrl.prettyURL()); + return; + } + } + else { + processStatus(code, partUrl.prettyURL()); + return; + } + } + + // Determine the url we will actually write to... + KURL writeUrl (markPartial ? partUrl:origUrl); + + Q_UINT32 pflags = 0; + if( overwrite && !resume ) + pflags = SSH2_FXF_WRITE | SSH2_FXF_CREAT | SSH2_FXF_TRUNC; + else if( !overwrite && !resume ) + pflags = SSH2_FXF_WRITE | SSH2_FXF_CREAT | SSH2_FXF_EXCL; + else if( overwrite && resume ) + pflags = SSH2_FXF_WRITE | SSH2_FXF_CREAT; + else if( !overwrite && resume ) + pflags = SSH2_FXF_WRITE | SSH2_FXF_CREAT | SSH2_FXF_APPEND; + + sftpFileAttr attr(remoteEncoding()); + QByteArray handle; + + // Set the permissions of the file we write to if it didn't already exist + // and the permission info is supplied, i.e it is not -1 + if( !partExists && !origExists && permissions != -1) + attr.setPermissions(permissions); + + code = sftpOpen( writeUrl, pflags, attr, handle ); + if( code != SSH2_FX_OK ) { + + // Rename the file back to its original name if a + // put fails due to permissions problems... + if( markPartial && overwrite ) { + (void) sftpRename(partUrl, origUrl); + writeUrl = origUrl; + } + + if( code == SSH2_FX_FAILURE ) { // assume failure means file exists + error(ERR_FILE_ALREADY_EXIST, writeUrl.prettyURL()); + return; + } + else { + processStatus(code, writeUrl.prettyURL()); + return; + } + } + + long nbytes; + QByteArray buff; + + do { + + if( fd != -1 ) { + buff.resize( 16*1024 ); + if ( (nbytes = ::read(fd, buff.data(), buff.size())) > -1 ) + buff.resize( nbytes ); + } + else { + dataReq(); + nbytes = readData( buff ); + } + + if( nbytes >= 0 ) { + if( (code = sftpWrite(handle, offset, buff)) != SSH2_FX_OK ) { + error(ERR_COULD_NOT_WRITE, dest.prettyURL()); + return; + } + + offset += nbytes; + processedSize(offset); + + /* Check if slave was killed. According to slavebase.h we + * need to leave the slave methods as soon as possible if + * the slave is killed. This allows the slave to be cleaned + * up properly. + */ + if( wasKilled() ) { + sftpClose(handle); + closeConnection(); + error(ERR_UNKNOWN, i18n("An internal error occurred. Please try again.")); + return; + } + } + + } while( nbytes > 0 ); + + if( nbytes < 0 ) { + sftpClose(handle); + + if( markPartial ) { + // Remove remote file if it smaller than our keep size + uint minKeepSize = config()->readNumEntry("MinimumKeepSize", DEFAULT_MINIMUM_KEEP_SIZE); + + if( sftpStat(writeUrl, attr) == SSH2_FX_OK ) { + if( attr.fileSize() < minKeepSize ) { + sftpRemove(writeUrl, true); + } + } + } + + error( ERR_UNKNOWN, i18n("Unknown error was encountered while copying the file " + "to '%1'. Please try again.").arg(dest.host()) ); + return; + } + + if( (code = sftpClose(handle)) != SSH2_FX_OK ) { + error(ERR_COULD_NOT_WRITE, writeUrl.prettyURL()); + return; + } + + // If wrote to a partial file, then remove the part ext + if( markPartial ) { + if( sftpRename(partUrl, origUrl) != SSH2_FX_OK ) { + error(ERR_CANNOT_RENAME_PARTIAL, origUrl.prettyURL()); + return; + } + } + + finished(); +} + +void sftpProtocol::put ( const KURL& url, int permissions, bool overwrite, bool resume ){ + kdDebug(KIO_SFTP_DB) << "put(): " << url << ", overwrite = " << overwrite + << ", resume = " << resume << endl; + + sftpPut( url, permissions, resume, overwrite ); +} + +void sftpProtocol::stat ( const KURL& url ){ + kdDebug(KIO_SFTP_DB) << "stat(): " << url << endl; + + openConnection(); + if( !mConnected ) + return; + + // If the stat URL has no path, do not attempt to determine the real + // path and do a redirect. KRun will simply ignore such requests. + // Instead, simply return the mime-type as a directory... + if( !url.hasPath() ) { + UDSEntry entry; + UDSAtom atom; + + atom.m_uds = KIO::UDS_NAME; + atom.m_str = QString::null; + entry.append( atom ); + + atom.m_uds = KIO::UDS_FILE_TYPE; + atom.m_long = S_IFDIR; + entry.append( atom ); + + atom.m_uds = KIO::UDS_ACCESS; + atom.m_long = S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH; + entry.append( atom ); + + atom.m_uds = KIO::UDS_USER; + atom.m_str = mUsername; + entry.append( atom ); + atom.m_uds = KIO::UDS_GROUP; + entry.append( atom ); + + // no size + statEntry( entry ); + finished(); + return; + } + + int code; + sftpFileAttr attr(remoteEncoding()); + if( (code = sftpStat(url, attr)) != SSH2_FX_OK ) { + processStatus(code, url.prettyURL()); + return; + } + else { + //kdDebug() << "We sent and received stat packet ok" << endl; + attr.setFilename(url.fileName()); + statEntry(attr.entry()); + } + + finished(); + + kdDebug(KIO_SFTP_DB) << "stat: END" << endl; + return; +} + + +void sftpProtocol::mimetype ( const KURL& url ){ + kdDebug(KIO_SFTP_DB) << "mimetype(): " << url << endl; + + openConnection(); + if( !mConnected ) + return; + + Q_UINT32 pflags = SSH2_FXF_READ; + QByteArray handle, mydata; + sftpFileAttr attr(remoteEncoding()); + int code; + if( (code = sftpOpen(url, pflags, attr, handle)) != SSH2_FX_OK ) { + error(ERR_CANNOT_OPEN_FOR_READING, url.prettyURL()); + return; + } + + Q_UINT32 len = 1024; // Get first 1k for determining mimetype + Q_UINT64 offset = 0; + code = SSH2_FX_OK; + while( offset < len && code == SSH2_FX_OK ) { + if( (code = sftpRead(handle, offset, len, mydata)) == SSH2_FX_OK ) { + data(mydata); + offset += mydata.size(); + processedSize(offset); + + kdDebug(KIO_SFTP_DB) << "mimetype(): offset = " << offset << endl; + } + } + + + data(QByteArray()); + processedSize(offset); + sftpClose(handle); + finished(); + kdDebug(KIO_SFTP_DB) << "mimetype(): END" << endl; +} + + +void sftpProtocol::listDir(const KURL& url) { + kdDebug(KIO_SFTP_DB) << "listDir(): " << url << endl; + + openConnection(); + if( !mConnected ) + return; + + if( !url.hasPath() ) { + KURL newUrl ( url ); + if( sftpRealPath(url, newUrl) == SSH2_FX_OK ) { + kdDebug(KIO_SFTP_DB) << "listDir: Redirecting to " << newUrl << endl; + redirection(newUrl); + finished(); + return; + } + } + + int code; + QByteArray handle; + + if( (code = sftpOpenDirectory(url, handle)) != SSH2_FX_OK ) { + kdError(KIO_SFTP_DB) << "listDir(): open directory failed" << endl; + processStatus(code, url.prettyURL()); + return; + } + + + code = SSH2_FX_OK; + while( code == SSH2_FX_OK ) { + code = sftpReadDir(handle, url); + if( code != SSH2_FX_OK && code != SSH2_FX_EOF ) + processStatus(code, url.prettyURL()); + kdDebug(KIO_SFTP_DB) << "listDir(): return code = " << code << endl; + } + + if( (code = sftpClose(handle)) != SSH2_FX_OK ) { + kdError(KIO_SFTP_DB) << "listdir(): closing of directory failed" << endl; + processStatus(code, url.prettyURL()); + return; + } + + finished(); + kdDebug(KIO_SFTP_DB) << "listDir(): END" << endl; +} + +/** Make a directory. + OpenSSH does not follow the internet draft for sftp in this case. + The format of the mkdir request expected by OpenSSH sftp server is: + uint32 id + string path + ATTR attr + */ +void sftpProtocol::mkdir(const KURL&url, int permissions){ + + kdDebug(KIO_SFTP_DB) << "mkdir() creating dir: " << url.path() << endl; + + openConnection(); + if( !mConnected ) + return; + + QCString path = remoteEncoding()->encode(url.path()); + uint len = path.length(); + + sftpFileAttr attr(remoteEncoding()); + + if (permissions != -1) + attr.setPermissions(permissions); + + Q_UINT32 id, expectedId; + id = expectedId = mMsgId++; + + QByteArray p; + QDataStream s(p, IO_WriteOnly); + s << Q_UINT32(1 /*type*/ + 4 /*id*/ + 4 /*str length*/ + len + attr.size()); + s << (Q_UINT8)SSH2_FXP_MKDIR; + s << id; + s.writeBytes(path.data(), len); + s << attr; + + kdDebug(KIO_SFTP_DB) << "mkdir(): packet size is " << p.size() << endl; + + putPacket(p); + getPacket(p); + + Q_UINT8 type; + QDataStream r(p, IO_ReadOnly); + + r >> type >> id; + if( id != expectedId ) { + kdError(KIO_SFTP_DB) << "mkdir: sftp packet id mismatch" << endl; + error(ERR_COULD_NOT_MKDIR, path); + finished(); + return; + } + + if( type != SSH2_FXP_STATUS ) { + kdError(KIO_SFTP_DB) << "mkdir(): unexpected packet type of " << type << endl; + error(ERR_COULD_NOT_MKDIR, path); + finished(); + return; + } + + int code; + r >> code; + if( code != SSH2_FX_OK ) { + kdError(KIO_SFTP_DB) << "mkdir(): failed with code " << code << endl; + + // Check if mkdir failed because the directory already exists so that + // we can return the appropriate message... + sftpFileAttr dirAttr(remoteEncoding()); + if ( sftpStat(url, dirAttr) == SSH2_FX_OK ) + { + error( ERR_DIR_ALREADY_EXIST, url.prettyURL() ); + return; + } + + error(ERR_COULD_NOT_MKDIR, path); + } + + finished(); +} + +void sftpProtocol::rename(const KURL& src, const KURL& dest, bool overwrite){ + kdDebug(KIO_SFTP_DB) << "rename(" << src << " -> " << dest << ")" << endl; + + if (!isSupportedOperation(SSH2_FXP_RENAME)) { + error(ERR_UNSUPPORTED_ACTION, + i18n("The remote host does not support renaming files.")); + return; + } + + openConnection(); + if( !mConnected ) + return; + + // Always stat the destination before attempting to rename + // a file or a directory... + sftpFileAttr attr(remoteEncoding()); + int code = sftpStat(dest, attr); + + // If the destination directory, exists tell it to the job + // so it the proper action can be presented to the user... + if( code == SSH2_FX_OK ) + { + if (!overwrite) + { + if ( S_ISDIR(attr.permissions()) ) + error( KIO::ERR_DIR_ALREADY_EXIST, dest.url() ); + else + error( KIO::ERR_FILE_ALREADY_EXIST, dest.url() ); + return; + } + + // If overwrite is specified, then simply remove the existing file/dir first... + if( (code = sftpRemove( dest, !S_ISDIR(attr.permissions()) )) != SSH2_FX_OK ) + { + processStatus(code); + return; + } + } + + // Do the renaming... + if( (code = sftpRename(src, dest)) != SSH2_FX_OK ) { + processStatus(code); + return; + } + + finished(); + kdDebug(KIO_SFTP_DB) << "rename(): END" << endl; +} + +void sftpProtocol::symlink(const QString& target, const KURL& dest, bool overwrite){ + kdDebug(KIO_SFTP_DB) << "symlink()" << endl; + + if (!isSupportedOperation(SSH2_FXP_SYMLINK)) { + error(ERR_UNSUPPORTED_ACTION, + i18n("The remote host does not support creating symbolic links.")); + return; + } + + openConnection(); + if( !mConnected ) + return; + + int code; + bool failed = false; + if( (code = sftpSymLink(target, dest)) != SSH2_FX_OK ) { + if( overwrite ) { // try to delete the destination + sftpFileAttr attr(remoteEncoding()); + if( (code = sftpStat(dest, attr)) != SSH2_FX_OK ) { + failed = true; + } + else { + if( (code = sftpRemove(dest, !S_ISDIR(attr.permissions())) ) != SSH2_FX_OK ) { + failed = true; + } + else { + // XXX what if rename fails again? We have lost the file. + // Maybe rename dest to a temporary name first? If rename is + // successful, then delete? + if( (code = sftpSymLink(target, dest)) != SSH2_FX_OK ) + failed = true; + } + } + } + else if( code == SSH2_FX_FAILURE ) { + error(ERR_FILE_ALREADY_EXIST, dest.prettyURL()); + return; + } + else + failed = true; + } + + // What error code do we return? Code for the original symlink command + // or for the last command or for both? The second one is implemented here. + if( failed ) + processStatus(code); + + finished(); +} + +void sftpProtocol::chmod(const KURL& url, int permissions){ + QString perms; + perms.setNum(permissions, 8); + kdDebug(KIO_SFTP_DB) << "chmod(" << url << ", " << perms << ")" << endl; + + openConnection(); + if( !mConnected ) + return; + + sftpFileAttr attr(remoteEncoding()); + + if (permissions != -1) + attr.setPermissions(permissions); + + int code; + if( (code = sftpSetStat(url, attr)) != SSH2_FX_OK ) { + kdError(KIO_SFTP_DB) << "chmod(): sftpSetStat failed with error " << code << endl; + if( code == SSH2_FX_FAILURE ) + error(ERR_CANNOT_CHMOD, QString::null); + else + processStatus(code, url.prettyURL()); + } + finished(); +} + + +void sftpProtocol::del(const KURL &url, bool isfile){ + kdDebug(KIO_SFTP_DB) << "del(" << url << ", " << (isfile?"file":"dir") << ")" << endl; + + openConnection(); + if( !mConnected ) + return; + + int code; + if( (code = sftpRemove(url, isfile)) != SSH2_FX_OK ) { + kdError(KIO_SFTP_DB) << "del(): sftpRemove failed with error code " << code << endl; + processStatus(code, url.prettyURL()); + } + finished(); +} + +void sftpProtocol::slave_status() { + kdDebug(KIO_SFTP_DB) << "slave_status(): connected to " + << mHost << "? " << mConnected << endl; + + slaveStatus ((mConnected ? mHost : QString::null), mConnected); +} + +bool sftpProtocol::getPacket(QByteArray& msg) { + QByteArray buf(4096); + + // Get the message length... + ssize_t len = atomicio(ssh.stdioFd(), buf.data(), 4, true /*read*/); + + if( len == 0 || len == -1 ) { + kdDebug(KIO_SFTP_DB) << "getPacket(): read of packet length failed, ret = " + << len << ", error =" << strerror(errno) << endl; + closeConnection(); + error( ERR_CONNECTION_BROKEN, mHost); + msg.resize(0); + return false; + } + + uint msgLen; + QDataStream s(buf, IO_ReadOnly); + s >> msgLen; + + //kdDebug(KIO_SFTP_DB) << "getPacket(): Message size = " << msgLen << endl; + + msg.resize(0); + + QBuffer b( msg ); + b.open( IO_WriteOnly ); + + while( msgLen ) { + len = atomicio(ssh.stdioFd(), buf.data(), kMin(buf.size(), msgLen), true /*read*/); + + if( len == 0 || len == -1) { + QString errmsg; + if (len == 0) + errmsg = i18n("Connection closed"); + else + errmsg = i18n("Could not read SFTP packet"); + kdDebug(KIO_SFTP_DB) << "getPacket(): nothing to read, ret = " << + len << ", error =" << strerror(errno) << endl; + closeConnection(); + error(ERR_CONNECTION_BROKEN, errmsg); + b.close(); + return false; + } + + b.writeBlock(buf.data(), len); + + //kdDebug(KIO_SFTP_DB) << "getPacket(): Read Message size = " << len << endl; + //kdDebug(KIO_SFTP_DB) << "getPacket(): Copy Message size = " << msg.size() << endl; + + msgLen -= len; + } + + b.close(); + + return true; +} + +/** Send an sftp packet to stdin of the ssh process. */ +bool sftpProtocol::putPacket(QByteArray& p){ +// kdDebug(KIO_SFTP_DB) << "putPacket(): size == " << p.size() << endl; + int ret; + ret = atomicio(ssh.stdioFd(), p.data(), p.size(), false /*write*/); + if( ret <= 0 ) { + kdDebug(KIO_SFTP_DB) << "putPacket(): write failed, ret =" << ret << + ", error = " << strerror(errno) << endl; + return false; + } + + return true; +} + +/** Used to have the server canonicalize any given path name to an absolute path. +This is useful for converting path names containing ".." components or relative +pathnames without a leading slash into absolute paths. +Returns the canonicalized url. */ +int sftpProtocol::sftpRealPath(const KURL& url, KURL& newUrl){ + + kdDebug(KIO_SFTP_DB) << "sftpRealPath(" << url << ", newUrl)" << endl; + + QCString path = remoteEncoding()->encode(url.path()); + uint len = path.length(); + + Q_UINT32 id, expectedId; + id = expectedId = mMsgId++; + + QByteArray p; + QDataStream s(p, IO_WriteOnly); + s << Q_UINT32(1 /*type*/ + 4 /*id*/ + 4 /*str length*/ + len); + s << (Q_UINT8)SSH2_FXP_REALPATH; + s << id; + s.writeBytes(path.data(), len); + + putPacket(p); + getPacket(p); + + Q_UINT8 type; + QDataStream r(p, IO_ReadOnly); + + r >> type >> id; + if( id != expectedId ) { + kdError(KIO_SFTP_DB) << "sftpRealPath: sftp packet id mismatch" << endl; + return -1; + } + + if( type == SSH2_FXP_STATUS ) { + Q_UINT32 code; + r >> code; + return code; + } + + if( type != SSH2_FXP_NAME ) { + kdError(KIO_SFTP_DB) << "sftpRealPath(): unexpected packet type of " << type << endl; + return -1; + } + + Q_UINT32 count; + r >> count; + if( count != 1 ) { + kdError(KIO_SFTP_DB) << "sftpRealPath(): Bad number of file attributes for realpath command" << endl; + return -1; + } + + QCString newPath; + r >> newPath; + + newPath.truncate(newPath.size()); + if (newPath.isEmpty()) + newPath = "/"; + newUrl.setPath(newPath); + + return SSH2_FX_OK; +} + +sftpProtocol::Status sftpProtocol::doProcessStatus(Q_UINT8 code, const QString& message) +{ + Status res; + res.code = 0; + res.size = 0; + res.text = message; + + switch(code) + { + case SSH2_FX_OK: + case SSH2_FX_EOF: + break; + case SSH2_FX_NO_SUCH_FILE: + res.code = ERR_DOES_NOT_EXIST; + break; + case SSH2_FX_PERMISSION_DENIED: + res.code = ERR_ACCESS_DENIED; + break; + case SSH2_FX_FAILURE: + res.text = i18n("SFTP command failed for an unknown reason."); + res.code = ERR_UNKNOWN; + break; + case SSH2_FX_BAD_MESSAGE: + res.text = i18n("The SFTP server received a bad message."); + res.code = ERR_UNKNOWN; + break; + case SSH2_FX_OP_UNSUPPORTED: + res.text = i18n("You attempted an operation unsupported by the SFTP server."); + res.code = ERR_UNKNOWN; + break; + default: + res.text = i18n("Error code: %1").arg(code); + res.code = ERR_UNKNOWN; + } + + return res; +} + +/** Process SSH_FXP_STATUS packets. */ +void sftpProtocol::processStatus(Q_UINT8 code, const QString& message){ + Status st = doProcessStatus( code, message ); + if( st.code != 0 ) + error( st.code, st.text ); +} + +/** Opens a directory handle for url.path. Returns true if succeeds. */ +int sftpProtocol::sftpOpenDirectory(const KURL& url, QByteArray& handle){ + + kdDebug(KIO_SFTP_DB) << "sftpOpenDirectory(" << url << ", handle)" << endl; + + QCString path = remoteEncoding()->encode(url.path()); + uint len = path.length(); + + Q_UINT32 id, expectedId; + id = expectedId = mMsgId++; + + QByteArray p; + QDataStream s(p, IO_WriteOnly); + s << (Q_UINT32)(1 /*type*/ + 4 /*id*/ + 4 /*str length*/ + len); + s << (Q_UINT8)SSH2_FXP_OPENDIR; + s << (Q_UINT32)id; + s.writeBytes(path.data(), len); + + putPacket(p); + getPacket(p); + + QDataStream r(p, IO_ReadOnly); + Q_UINT8 type; + + r >> type >> id; + if( id != expectedId ) { + kdError(KIO_SFTP_DB) << "sftpOpenDirectory: sftp packet id mismatch: " << + "expected " << expectedId << ", got " << id << endl; + return -1; + } + + if( type == SSH2_FXP_STATUS ) { + Q_UINT32 errCode; + r >> errCode; + return errCode; + } + + if( type != SSH2_FXP_HANDLE ) { + kdError(KIO_SFTP_DB) << "sftpOpenDirectory: unexpected message type of " << type << endl; + return -1; + } + + r >> handle; + if( handle.size() > 256 ) { + kdError(KIO_SFTP_DB) << "sftpOpenDirectory: handle exceeds max length" << endl; + return -1; + } + + kdDebug(KIO_SFTP_DB) << "sftpOpenDirectory: handle (" << handle.size() << "): [" << handle << "]" << endl; + return SSH2_FX_OK; +} + +/** Closes a directory or file handle. */ +int sftpProtocol::sftpClose(const QByteArray& handle){ + + kdDebug(KIO_SFTP_DB) << "sftpClose()" << endl; + + Q_UINT32 id, expectedId; + id = expectedId = mMsgId++; + + QByteArray p; + QDataStream s(p, IO_WriteOnly); + s << (Q_UINT32)(1 /*type*/ + 4 /*id*/ + 4 /*str length*/ + handle.size()); + s << (Q_UINT8)SSH2_FXP_CLOSE; + s << (Q_UINT32)id; + s << handle; + + putPacket(p); + getPacket(p); + + QDataStream r(p, IO_ReadOnly); + Q_UINT8 type; + + r >> type >> id; + if( id != expectedId ) { + kdError(KIO_SFTP_DB) << "sftpClose: sftp packet id mismatch" << endl; + return -1; + } + + if( type != SSH2_FXP_STATUS ) { + kdError(KIO_SFTP_DB) << "sftpClose: unexpected message type of " << type << endl; + return -1; + } + + Q_UINT32 code; + r >> code; + if( code != SSH2_FX_OK ) { + kdError(KIO_SFTP_DB) << "sftpClose: close failed with err code " << code << endl; + } + + return code; +} + +/** Set a files attributes. */ +int sftpProtocol::sftpSetStat(const KURL& url, const sftpFileAttr& attr){ + + kdDebug(KIO_SFTP_DB) << "sftpSetStat(" << url << ", attr)" << endl; + + QCString path = remoteEncoding()->encode(url.path()); + uint len = path.length(); + + Q_UINT32 id, expectedId; + id = expectedId = mMsgId++; + + QByteArray p; + QDataStream s(p, IO_WriteOnly); + s << (Q_UINT32)(1 /*type*/ + 4 /*id*/ + 4 /*str length*/ + len + attr.size()); + s << (Q_UINT8)SSH2_FXP_SETSTAT; + s << (Q_UINT32)id; + s.writeBytes(path.data(), len); + s << attr; + + putPacket(p); + getPacket(p); + + QDataStream r(p, IO_ReadOnly); + Q_UINT8 type; + + r >> type >> id; + if( id != expectedId ) { + kdError(KIO_SFTP_DB) << "sftpSetStat(): sftp packet id mismatch" << endl; + return -1; + // XXX How do we do a fatal error? + } + + if( type != SSH2_FXP_STATUS ) { + kdError(KIO_SFTP_DB) << "sftpSetStat(): unexpected message type of " << type << endl; + return -1; + } + + Q_UINT32 code; + r >> code; + if( code != SSH2_FX_OK ) { + kdError(KIO_SFTP_DB) << "sftpSetStat(): set stat failed with err code " << code << endl; + } + + return code; +} + +/** Sends a sftp command to remove a file or directory. */ +int sftpProtocol::sftpRemove(const KURL& url, bool isfile){ + + kdDebug(KIO_SFTP_DB) << "sftpRemove(): " << url << ", isFile ? " << isfile << endl; + + QCString path = remoteEncoding()->encode(url.path()); + uint len = path.length(); + + Q_UINT32 id, expectedId; + id = expectedId = mMsgId++; + + QByteArray p; + QDataStream s(p, IO_WriteOnly); + s << (Q_UINT32)(1 /*type*/ + 4 /*id*/ + 4 /*str length*/ + len); + s << (Q_UINT8)(isfile ? SSH2_FXP_REMOVE : SSH2_FXP_RMDIR); + s << (Q_UINT32)id; + s.writeBytes(path.data(), len); + + putPacket(p); + getPacket(p); + + QDataStream r(p, IO_ReadOnly); + Q_UINT8 type; + + r >> type >> id; + if( id != expectedId ) { + kdError(KIO_SFTP_DB) << "del(): sftp packet id mismatch" << endl; + return -1; + } + + if( type != SSH2_FXP_STATUS ) { + kdError(KIO_SFTP_DB) << "del(): unexpected message type of " << type << endl; + return -1; + } + + Q_UINT32 code; + r >> code; + if( code != SSH2_FX_OK ) { + kdError(KIO_SFTP_DB) << "del(): del failed with err code " << code << endl; + } + + return code; +} + +/** Send a sftp command to rename a file or directoy. */ +int sftpProtocol::sftpRename(const KURL& src, const KURL& dest){ + + kdDebug(KIO_SFTP_DB) << "sftpRename(" << src << " -> " << dest << ")" << endl; + + QCString srcPath = remoteEncoding()->encode(src.path()); + QCString destPath = remoteEncoding()->encode(dest.path()); + + uint slen = srcPath.length(); + uint dlen = destPath.length(); + + Q_UINT32 id, expectedId; + id = expectedId = mMsgId++; + + QByteArray p; + QDataStream s(p, IO_WriteOnly); + s << (Q_UINT32)(1 /*type*/ + 4 /*id*/ + + 4 /*str length*/ + slen + + 4 /*str length*/ + dlen); + s << (Q_UINT8)SSH2_FXP_RENAME; + s << (Q_UINT32)id; + s.writeBytes(srcPath.data(), slen); + s.writeBytes(destPath.data(), dlen); + + putPacket(p); + getPacket(p); + + QDataStream r(p, IO_ReadOnly); + Q_UINT8 type; + + r >> type >> id; + if( id != expectedId ) { + kdError(KIO_SFTP_DB) << "sftpRename(): sftp packet id mismatch" << endl; + return -1; + } + + if( type != SSH2_FXP_STATUS ) { + kdError(KIO_SFTP_DB) << "sftpRename(): unexpected message type of " << type << endl; + return -1; + } + + int code; + r >> code; + if( code != SSH2_FX_OK ) { + kdError(KIO_SFTP_DB) << "sftpRename(): rename failed with err code " << code << endl; + } + + return code; +} +/** Get directory listings. */ +int sftpProtocol::sftpReadDir(const QByteArray& handle, const KURL& url){ + // url is needed so we can lookup the link destination + kdDebug(KIO_SFTP_DB) << "sftpReadDir(): " << url << endl; + + Q_UINT32 id, expectedId, count; + Q_UINT8 type; + + sftpFileAttr attr (remoteEncoding()); + attr.setDirAttrsFlag(true); + + QByteArray p; + QDataStream s(p, IO_WriteOnly); + id = expectedId = mMsgId++; + s << (Q_UINT32)(1 /*type*/ + 4 /*id*/ + 4 /*str length*/ + handle.size()); + s << (Q_UINT8)SSH2_FXP_READDIR; + s << (Q_UINT32)id; + s << handle; + + putPacket(p); + getPacket(p); + + QDataStream r(p, IO_ReadOnly); + r >> type >> id; + + if( id != expectedId ) { + kdError(KIO_SFTP_DB) << "sftpReadDir(): sftp packet id mismatch" << endl; + return -1; + } + + int code; + if( type == SSH2_FXP_STATUS ) { + r >> code; + return code; + } + + if( type != SSH2_FXP_NAME ) { + kdError(KIO_SFTP_DB) << "kio_sftpProtocl::sftpReadDir(): Unexpected message" << endl; + return -1; + } + + r >> count; + kdDebug(KIO_SFTP_DB) << "sftpReadDir(): got " << count << " entries" << endl; + + while(count--) { + r >> attr; + + if( S_ISLNK(attr.permissions()) ) { + KURL myurl ( url ); + myurl.addPath(attr.filename()); + + // Stat the symlink to find out its type... + sftpFileAttr attr2 (remoteEncoding()); + (void) sftpStat(myurl, attr2); + + attr.setLinkType(attr2.linkType()); + attr.setLinkDestination(attr2.linkDestination()); + } + + listEntry(attr.entry(), false); + } + + listEntry(attr.entry(), true); + + return SSH2_FX_OK; +} + +int sftpProtocol::sftpReadLink(const KURL& url, QString& target){ + + kdDebug(KIO_SFTP_DB) << "sftpReadLink(): " << url << endl; + + QCString path = remoteEncoding()->encode(url.path()); + uint len = path.length(); + + //kdDebug(KIO_SFTP_DB) << "sftpReadLink(): Encoded Path: " << path << endl; + //kdDebug(KIO_SFTP_DB) << "sftpReadLink(): Encoded Size: " << len << endl; + + Q_UINT32 id, expectedId; + id = expectedId = mMsgId++; + + QByteArray p; + QDataStream s(p, IO_WriteOnly); + s << (Q_UINT32)(1 /*type*/ + 4 /*id*/ + 4 /*str length*/ + len); + s << (Q_UINT8)SSH2_FXP_READLINK; + s << id; + s.writeBytes(path.data(), len); + + + putPacket(p); + getPacket(p); + + Q_UINT8 type; + QDataStream r(p, IO_ReadOnly); + + r >> type >> id; + if( id != expectedId ) { + kdError(KIO_SFTP_DB) << "sftpReadLink(): sftp packet id mismatch" << endl; + return -1; + } + + if( type == SSH2_FXP_STATUS ) { + Q_UINT32 code; + r >> code; + kdDebug(KIO_SFTP_DB) << "sftpReadLink(): read link failed with code " << code << endl; + return code; + } + + if( type != SSH2_FXP_NAME ) { + kdError(KIO_SFTP_DB) << "sftpReadLink(): unexpected packet type of " << type << endl; + return -1; + } + + Q_UINT32 count; + r >> count; + if( count != 1 ) { + kdError(KIO_SFTP_DB) << "sftpReadLink(): Bad number of file attributes for realpath command" << endl; + return -1; + } + + QCString linkAddress; + r >> linkAddress; + + linkAddress.truncate(linkAddress.size()); + kdDebug(KIO_SFTP_DB) << "sftpReadLink(): Link address: " << linkAddress << endl; + + target = remoteEncoding()->decode(linkAddress); + + return SSH2_FX_OK; +} + +int sftpProtocol::sftpSymLink(const QString& _target, const KURL& dest){ + + QCString destPath = remoteEncoding()->encode(dest.path()); + QCString target = remoteEncoding()->encode(_target); + uint dlen = destPath.length(); + uint tlen = target.length(); + + kdDebug(KIO_SFTP_DB) << "sftpSymLink(" << target << " -> " << destPath << ")" << endl; + + Q_UINT32 id, expectedId; + id = expectedId = mMsgId++; + + QByteArray p; + QDataStream s(p, IO_WriteOnly); + s << (Q_UINT32)(1 /*type*/ + 4 /*id*/ + + 4 /*str length*/ + tlen + + 4 /*str length*/ + dlen); + s << (Q_UINT8)SSH2_FXP_SYMLINK; + s << (Q_UINT32)id; + s.writeBytes(target.data(), tlen); + s.writeBytes(destPath.data(), dlen); + + putPacket(p); + getPacket(p); + + QDataStream r(p, IO_ReadOnly); + Q_UINT8 type; + + r >> type >> id; + if( id != expectedId ) { + kdError(KIO_SFTP_DB) << "sftpSymLink(): sftp packet id mismatch" << endl; + return -1; + } + + if( type != SSH2_FXP_STATUS ) { + kdError(KIO_SFTP_DB) << "sftpSymLink(): unexpected message type of " << type << endl; + return -1; + } + + Q_UINT32 code; + r >> code; + if( code != SSH2_FX_OK ) { + kdError(KIO_SFTP_DB) << "sftpSymLink(): rename failed with err code " << code << endl; + } + + return code; +} + +/** Stats a file. */ +int sftpProtocol::sftpStat(const KURL& url, sftpFileAttr& attr) { + + kdDebug(KIO_SFTP_DB) << "sftpStat(): " << url << endl; + + QCString path = remoteEncoding()->encode(url.path()); + uint len = path.length(); + + Q_UINT32 id, expectedId; + id = expectedId = mMsgId++; + + QByteArray p; + QDataStream s(p, IO_WriteOnly); + s << (Q_UINT32)(1 /*type*/ + 4 /*id*/ + 4 /*str length*/ + len); + s << (Q_UINT8)SSH2_FXP_LSTAT; + s << (Q_UINT32)id; + s.writeBytes(path.data(), len); + + putPacket(p); + getPacket(p); + + QDataStream r(p, IO_ReadOnly); + Q_UINT8 type; + + r >> type >> id; + if( id != expectedId ) { + kdError(KIO_SFTP_DB) << "sftpStat(): sftp packet id mismatch" << endl; + return -1; + } + + if( type == SSH2_FXP_STATUS ) { + Q_UINT32 errCode; + r >> errCode; + kdError(KIO_SFTP_DB) << "sftpStat(): stat failed with code " << errCode << endl; + return errCode; + } + + if( type != SSH2_FXP_ATTRS ) { + kdError(KIO_SFTP_DB) << "sftpStat(): unexpected message type of " << type << endl; + return -1; + } + + r >> attr; + attr.setFilename(url.fileName()); + kdDebug(KIO_SFTP_DB) << "sftpStat(): " << attr << endl; + + // If the stat'ed resource is a symlink, perform a recursive stat + // to determine the actual destination's type (file/dir). + if( S_ISLNK(attr.permissions()) && isSupportedOperation(SSH2_FXP_READLINK) ) { + + QString target; + int code = sftpReadLink( url, target ); + + if ( code != SSH2_FX_OK ) { + kdError(KIO_SFTP_DB) << "sftpStat(): Unable to stat symlink destination" << endl; + return -1; + } + + kdDebug(KIO_SFTP_DB) << "sftpStat(): Resource is a symlink to -> " << target << endl; + + KURL dest( url ); + if( target[0] == '/' ) + dest.setPath(target); + else + dest.setFileName(target); + + dest.cleanPath(); + + // Ignore symlinks that point to themselves... + if ( dest != url ) { + + sftpFileAttr attr2 (remoteEncoding()); + (void) sftpStat(dest, attr2); + + if (attr2.linkType() == 0) + attr.setLinkType(attr2.fileType()); + else + attr.setLinkType(attr2.linkType()); + + attr.setLinkDestination(target); + + kdDebug(KIO_SFTP_DB) << "sftpStat(): File type: " << attr.fileType() << endl; + } + } + + return SSH2_FX_OK; +} + + +int sftpProtocol::sftpOpen(const KURL& url, const Q_UINT32 pflags, + const sftpFileAttr& attr, QByteArray& handle) { + kdDebug(KIO_SFTP_DB) << "sftpOpen(" << url << ", handle" << endl; + + QCString path = remoteEncoding()->encode(url.path()); + uint len = path.length(); + + Q_UINT32 id, expectedId; + id = expectedId = mMsgId++; + + QByteArray p; + QDataStream s(p, IO_WriteOnly); + s << (Q_UINT32)(1 /*type*/ + 4 /*id*/ + + 4 /*str length*/ + len + + 4 /*pflags*/ + attr.size()); + s << (Q_UINT8)SSH2_FXP_OPEN; + s << (Q_UINT32)id; + s.writeBytes(path.data(), len); + s << pflags; + s << attr; + + putPacket(p); + getPacket(p); + + QDataStream r(p, IO_ReadOnly); + Q_UINT8 type; + + r >> type >> id; + if( id != expectedId ) { + kdError(KIO_SFTP_DB) << "sftpOpen(): sftp packet id mismatch" << endl; + return -1; + } + + if( type == SSH2_FXP_STATUS ) { + Q_UINT32 errCode; + r >> errCode; + return errCode; + } + + if( type != SSH2_FXP_HANDLE ) { + kdError(KIO_SFTP_DB) << "sftpOpen(): unexpected message type of " << type << endl; + return -1; + } + + r >> handle; + if( handle.size() > 256 ) { + kdError(KIO_SFTP_DB) << "sftpOpen(): handle exceeds max length" << endl; + return -1; + } + + kdDebug(KIO_SFTP_DB) << "sftpOpen(): handle (" << handle.size() << "): [" << handle << "]" << endl; + return SSH2_FX_OK; +} + + +int sftpProtocol::sftpRead(const QByteArray& handle, KIO::filesize_t offset, Q_UINT32 len, QByteArray& data) +{ + // kdDebug(KIO_SFTP_DB) << "sftpRead( offset = " << offset << ", len = " << len << ")" << endl; + QByteArray p; + QDataStream s(p, IO_WriteOnly); + + Q_UINT32 id, expectedId; + id = expectedId = mMsgId++; + s << (Q_UINT32)(1 /*type*/ + 4 /*id*/ + + 4 /*str length*/ + handle.size() + + 8 /*offset*/ + 4 /*length*/); + s << (Q_UINT8)SSH2_FXP_READ; + s << (Q_UINT32)id; + s << handle; + s << offset; // we don't have a convienient 64 bit int so set upper int to zero + s << len; + + putPacket(p); + getPacket(p); + + QDataStream r(p, IO_ReadOnly); + Q_UINT8 type; + + r >> type >> id; + if( id != expectedId ) { + kdError(KIO_SFTP_DB) << "sftpRead: sftp packet id mismatch" << endl; + return -1; + } + + if( type == SSH2_FXP_STATUS ) { + Q_UINT32 errCode; + r >> errCode; + kdError(KIO_SFTP_DB) << "sftpRead: read failed with code " << errCode << endl; + return errCode; + } + + if( type != SSH2_FXP_DATA ) { + kdError(KIO_SFTP_DB) << "sftpRead: unexpected message type of " << type << endl; + return -1; + } + + r >> data; + + return SSH2_FX_OK; +} + + +int sftpProtocol::sftpWrite(const QByteArray& handle, KIO::filesize_t offset, const QByteArray& data){ +// kdDebug(KIO_SFTP_DB) << "sftpWrite( offset = " << offset << +// ", data sz = " << data.size() << ")" << endl; + QByteArray p; + QDataStream s(p, IO_WriteOnly); + + Q_UINT32 id, expectedId; + id = expectedId = mMsgId++; + s << (Q_UINT32)(1 /*type*/ + 4 /*id*/ + + 4 /*str length*/ + handle.size() + + 8 /*offset*/ + + 4 /* data size */ + data.size()); + s << (Q_UINT8)SSH2_FXP_WRITE; + s << (Q_UINT32)id; + s << handle; + s << offset; // we don't have a convienient 64 bit int so set upper int to zero + s << data; + +// kdDebug(KIO_SFTP_DB) << "sftpWrite(): SSH2_FXP_WRITE, id:" +// << id << ", handle:" << handle << ", offset:" << offset << ", some data" << endl; + +// kdDebug(KIO_SFTP_DB) << "sftpWrite(): send packet [" << p << "]" << endl; + + putPacket(p); + getPacket(p); + +// kdDebug(KIO_SFTP_DB) << "sftpWrite(): received packet [" << p << "]" << endl; + + QDataStream r(p, IO_ReadOnly); + Q_UINT8 type; + + r >> type >> id; + if( id != expectedId ) { + kdError(KIO_SFTP_DB) << "sftpWrite(): sftp packet id mismatch, got " + << id << ", expected " << expectedId << endl; + return -1; + } + + if( type != SSH2_FXP_STATUS ) { + kdError(KIO_SFTP_DB) << "sftpWrite(): unexpected message type of " << type << endl; + return -1; + } + + Q_UINT32 code; + r >> code; + return code; +} + + |