void *
sftpfs_readdir (void *data, GError ** error)
{
char mem[BUF_MEDIUM];
LIBSSH2_SFTP_ATTRIBUTES attrs;
sftpfs_dir_data_t *sftpfs_dir = (sftpfs_dir_data_t *) data;
static union vfs_dirent sftpfs_dirent;
int rc;
do
{
rc = libssh2_sftp_readdir (sftpfs_dir->handle, mem, sizeof (mem), &attrs);
if (rc >= 0)
break;
if (rc != LIBSSH2_ERROR_EAGAIN)
{
sftpfs_ssherror_to_gliberror (sftpfs_dir->super_data, rc, error);
return NULL;
}
sftpfs_waitsocket (sftpfs_dir->super_data, error);
if (error != NULL && *error != NULL)
return NULL;
}
while (rc == LIBSSH2_ERROR_EAGAIN);
if (rc == 0)
return NULL;
g_strlcpy (sftpfs_dirent.dent.d_name, mem, BUF_MEDIUM);
compute_namelen (&sftpfs_dirent.dent);
return &sftpfs_dirent;
}
int FSSftp::ReadDir ( FSList* list, FSPath& path, int* err, FSCInfo* info )
{
MutexLock lock( &mutex );
int ret = CheckSession( err, info );
if ( ret ) { return ret; }
if ( !list ) { return 0; }
list->Clear();
try
{
LIBSSH2_SFTP_HANDLE* dir = 0;
try
{
while ( true )
{
dir = libssh2_sftp_opendir( sftpSession, ( char* )path.GetString( _operParam.charset, '/' ) );
if ( dir ) { break; }
CheckSFTPEagain();
WaitSocket( info );
}
while ( true )
{
char buf[4096];
int len = 0;
SftpAttr attr;
WHILE_EAGAIN_( len, libssh2_sftp_readdir( dir, buf, sizeof( buf ) - 1, &attr.attr ) );
if ( len < 0 ) { CheckSFTP( len ); }
if ( len == 0 ) { break; }
if ( buf[0] == '.' && ( !buf[1] || ( buf[1] == '.' && !buf[2] ) ) )
{
continue;
}
clPtr<FSNode> pNode = new FSNode();
pNode->name.Set( _operParam.charset, buf );
if ( attr.IsLink() )
{
FSPath pt = path;
pt.Push( _operParam.charset, buf );
char* fullPath = ( char* )pt.GetString( _operParam.charset, '/' );
WHILE_EAGAIN_( len, libssh2_sftp_readlink( sftpSession, fullPath, buf, sizeof( buf ) - 1 ) );
if ( len < 0 ) { CheckSFTP( len ); }
pNode->st.link.Set( _operParam.charset, buf );
int ret;
WHILE_EAGAIN_( ret, libssh2_sftp_stat( sftpSession, fullPath, &attr.attr ) );
}
pNode->st.mode = attr.Permissions();
pNode->st.size = attr.Size();
pNode->st.uid = attr.Uid();
pNode->st.gid = attr.Gid();
pNode->st.mtime = attr.MTime();
list->Append( pNode );
}
}
catch ( ... )
{
if ( dir ) { CloseHandle( dir, info ); }
throw;
}
if ( dir ) { CloseHandle( dir, info ); }
}
catch ( int e )
{
if ( err ) { *err = e; }
return ( e == -2 ) ? -2 : -1;
}
return 0;
}
int SSHDirRetriver::retrive_dir()
{
int exec_ret = -1;
NetDirNode *parent_item, *new_item, *tmp_item;
void *parent_persistent_index;
QString tmp;
QVector<NetDirNode*> deltaItems;
QVector<QMap<char, QString> > fileinfos;
char file_name[PATH_MAX+1];
int fxp_ls_ret = 0;
while (this->dir_node_process_queue.size() > 0) {
std::map<NetDirNode*,void * >::iterator mit;
mit = this->dir_node_process_queue.begin();
parent_item = mit->first;
parent_persistent_index = mit->second;
fileinfos.clear();
LIBSSH2_SFTP_ATTRIBUTES ssh2_sftp_attrib;
LIBSSH2_SFTP_HANDLE *ssh2_sftp_handle = 0;
ssh2_sftp_handle = libssh2_sftp_opendir(this->ssh2_sftp,
GlobalOption::instance()->remote_codec
->fromUnicode(parent_item->fullPath + ("/")).data());
// ssh2_sftp_handle == 0 是怎么回事呢？ 返回值 应该是
// 1 . 这个file_name 是一个链接，但这个链接指向的是一个普通文件而不是目录时libssh2_sftp_opendir返回0 , 而 libssh2_sftp_last_error 返回值为 2 == SSH2_FX_NO_SUCH_FILE
if (ssh2_sftp_handle == 0) {
qDebug()<<" sftp last error: "<< libssh2_sftp_last_error(this->ssh2_sftp)
<< libssh2_session_last_errno(this->ssh2_sess)
<<(parent_item->fullPath+ ( "/" ))
<<GlobalOption::instance()->remote_codec
->fromUnicode(parent_item->fullPath + ( "/" )).data();
}
fxp_ls_ret = 0;
while (ssh2_sftp_handle != 0 &&
libssh2_sftp_readdir(ssh2_sftp_handle, file_name, PATH_MAX, &ssh2_sftp_attrib ) > 0)
{
if (strlen(file_name) == 1 && file_name[0] == '.') continue;
if (strlen(file_name) == 2 && file_name[0] == '.' && file_name[1] == '.') continue;
//不处理隐藏文件? 处理隐藏文件,在这要提供隐藏文件，上层使用过滤代理模型提供显示隐藏文件的功能。
tmp = QString(GlobalOption::instance()->remote_codec->toUnicode(file_name));
tmp_item = parent_item->findChindByName(tmp);
tmp_item = 0;
// if (parent_item->setDeleteFlag(tmp, 0)) {
if (tmp_item != NULL && tmp_item->matchChecksum(&ssh2_sftp_attrib)) {
tmp_item->setDeleteFlag(false);
if (fxp_ls_ret++ == 0)
printf("Already in list, omited %d", fxp_ls_ret), fxp_ls_ret = fxp_ls_ret | 1<<16;
else
printf(" %d", fxp_ls_ret<<16>>16);
} else {
new_item = new NetDirNode();
new_item->pNode = parent_item;
new_item->fullPath = parent_item->fullPath + QString("/") + tmp ; // this is unicode
new_item->_fileName = tmp;
new_item->attrib = ssh2_sftp_attrib;
new_item->retrFlag = (new_item->isDir() || new_item->isSymLink())
? POP_NO_NEED_NO_DATA : POP_NEWEST;
deltaItems.append(new_item);
}
}
bool SFTPChannel::updateLs()
{
int rc;
if (mRequestState == Beginning)
{
mOperationHandle = libssh2_sftp_opendir(mHandle, mCurrentRequest->getPath().toUtf8());
if (mOperationHandle)
mRequestState = Reading;
else if ((rc = libssh2_session_last_errno(mSession->sessionHandle())) == LIBSSH2_ERROR_EAGAIN)
return true; // try again
else
{
criticalError(tr("Failed to open remote directory for reading: %1").arg(rc));
return false;
}
mResult.clear();
}
if (mRequestState == Reading)
{
char buffer[1024];
LIBSSH2_SFTP_ATTRIBUTES attrs;
rc = libssh2_sftp_readdir(mOperationHandle, buffer, sizeof(buffer), &attrs);
if (rc == LIBSSH2_ERROR_EAGAIN)
return true; // Try again
else if (rc == 0)
mRequestState = Finishing;
else if (rc < 0)
{
criticalError(tr("Error while reading remote directory: %1").arg(rc));
return false;
}
else // Got a directory entry
{
// Skip hidden entries iff request says to
if (mCurrentRequest->getIncludeHidden() || buffer[0] != '.')
{
// Can't determine if remote file is readable/writable, so report all as so.
QString flags = "rw";
if (LIBSSH2_SFTP_S_ISDIR(attrs.permissions))
flags += 'd';
QVariantMap details;
details.insert("f", flags);
details.insert("s", attrs.filesize);
details.insert("m", (qulonglong)attrs.mtime);
mResult.insert(buffer, details);
}
}
}
if (mRequestState == Finishing)
{
rc = libssh2_sftp_closedir(mOperationHandle);
if (rc == LIBSSH2_ERROR_EAGAIN)
return true;
else if (rc < 0)
{
criticalError(tr("Failed to cleanly close SFTP directory: %1").arg(rc));
return false;
}
// Success! Send a response and finish up.
QVariantMap finalResult;
finalResult.insert("entries", mResult);
mCurrentRequest->triggerSuccess(finalResult);
return false;
}
return true;
}
CURLcode Curl_sftp_do(struct connectdata *conn, bool *done)
{
LIBSSH2_SFTP_ATTRIBUTES attrs;
struct SSHPROTO *sftp = conn->data->reqdata.proto.ssh;
CURLcode res = CURLE_OK;
struct SessionHandle *data = conn->data;
curl_off_t bytecount = 0;
char *buf = data->state.buffer;
*done = TRUE; /* unconditionally */
if (data->set.upload) {
/*
* NOTE!!! libssh2 requires that the destination path is a full path
* that includes the destination file and name OR ends in a "/" .
* If this is not done the destination file will be named the
* same name as the last directory in the path.
*/
sftp->sftp_handle =
libssh2_sftp_open(sftp->sftp_session, sftp->path,
LIBSSH2_FXF_WRITE|LIBSSH2_FXF_CREAT,
LIBSSH2_SFTP_S_IRUSR|LIBSSH2_SFTP_S_IWUSR|
LIBSSH2_SFTP_S_IRGRP|LIBSSH2_SFTP_S_IROTH);
if (!sftp->sftp_handle)
return CURLE_FAILED_INIT;
/* upload data */
res = Curl_setup_transfer(conn, -1, -1, FALSE, NULL, FIRSTSOCKET, NULL);
}
else {
if (sftp->path[strlen(sftp->path)-1] == '/') {
/*
* This is a directory that we are trying to get, so produce a
* directory listing
*
* **BLOCKING behaviour** This should be made into a state machine and
* get a separate function called from Curl_sftp_recv() when there is
* data to read from the network, instead of "hanging" here.
*/
char filename[PATH_MAX+1];
int len, totalLen, currLen;
char *line;
sftp->sftp_handle =
libssh2_sftp_opendir(sftp->sftp_session, sftp->path);
if (!sftp->sftp_handle)
return CURLE_SSH;
while ((len = libssh2_sftp_readdir(sftp->sftp_handle, filename,
PATH_MAX, &attrs)) > 0) {
filename[len] = '\0';
if (data->set.ftp_list_only) {
if ((attrs.flags & LIBSSH2_SFTP_ATTR_PERMISSIONS) &&
((attrs.permissions & LIBSSH2_SFTP_S_IFMT) ==
LIBSSH2_SFTP_S_IFDIR)) {
infof(data, "%s\n", filename);
}
}
else {
totalLen = 80 + len;
line = (char *)malloc(totalLen);
if (!line)
return CURLE_OUT_OF_MEMORY;
if (!(attrs.flags & LIBSSH2_SFTP_ATTR_UIDGID))
attrs.uid = attrs.gid =0;
currLen = snprintf(line, totalLen, "---------- 1 %5d %5d",
attrs.uid, attrs.gid);
if (attrs.flags & LIBSSH2_SFTP_ATTR_PERMISSIONS) {
if ((attrs.permissions & LIBSSH2_SFTP_S_IFMT) ==
LIBSSH2_SFTP_S_IFDIR) {
line[0] = 'd';
}
else if ((attrs.permissions & LIBSSH2_SFTP_S_IFMT) ==
LIBSSH2_SFTP_S_IFLNK) {
line[0] = 'l';
}
else if ((attrs.permissions & LIBSSH2_SFTP_S_IFMT) ==
LIBSSH2_SFTP_S_IFSOCK) {
line[0] = 's';
}
else if ((attrs.permissions & LIBSSH2_SFTP_S_IFMT) ==
LIBSSH2_SFTP_S_IFCHR) {
line[0] = 'c';
}
else if ((attrs.permissions & LIBSSH2_SFTP_S_IFMT) ==
LIBSSH2_SFTP_S_IFBLK) {
line[0] = 'b';
}
if (attrs.permissions & LIBSSH2_SFTP_S_IRUSR) {
line[1] = 'r';
}
if (attrs.permissions & LIBSSH2_SFTP_S_IWUSR) {
line[2] = 'w';
}
if (attrs.permissions & LIBSSH2_SFTP_S_IXUSR) {
line[3] = 'x';
}
if (attrs.permissions & LIBSSH2_SFTP_S_IRGRP) {
line[4] = 'r';
}
if (attrs.permissions & LIBSSH2_SFTP_S_IWGRP) {
line[5] = 'w';
}
if (attrs.permissions & LIBSSH2_SFTP_S_IXGRP) {
line[6] = 'x';
}
if (attrs.permissions & LIBSSH2_SFTP_S_IROTH) {
line[7] = 'r';
}
if (attrs.permissions & LIBSSH2_SFTP_S_IWOTH) {
line[8] = 'w';
}
if (attrs.permissions & LIBSSH2_SFTP_S_IXOTH) {
line[9] = 'x';
}
}
if (attrs.flags & LIBSSH2_SFTP_ATTR_SIZE) {
currLen += snprintf(line+currLen, totalLen-currLen, "%11lld",
attrs.filesize);
}
if (attrs.flags & LIBSSH2_SFTP_ATTR_ACMODTIME) {
const char *months[12] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
struct tm *nowParts;
time_t now, remoteTime;
now = time(NULL);
remoteTime = (time_t)attrs.mtime;
nowParts = localtime(&remoteTime);
if ((time_t)attrs.mtime > (now - (3600 * 24 * 180))) {
currLen += snprintf(line+currLen, totalLen-currLen,
" %s %2d %2d:%02d", months[nowParts->tm_mon],
nowParts->tm_mday, nowParts->tm_hour,
nowParts->tm_min);
}
else {
currLen += snprintf(line+currLen, totalLen-currLen,
" %s %2d %5d", months[nowParts->tm_mon],
nowParts->tm_mday, 1900+nowParts->tm_year);
}
}
currLen += snprintf(line+currLen, totalLen-currLen, " %s", filename);
if ((attrs.flags & LIBSSH2_SFTP_ATTR_PERMISSIONS) &&
((attrs.permissions & LIBSSH2_SFTP_S_IFMT) ==
LIBSSH2_SFTP_S_IFLNK)) {
char linkPath[PATH_MAX + 1];
snprintf(linkPath, PATH_MAX, "%s%s", sftp->path, filename);
len = libssh2_sftp_readlink(sftp->sftp_session, linkPath, filename,
PATH_MAX);
line = realloc(line, totalLen + 4 + len);
if (!line)
return CURLE_OUT_OF_MEMORY;
currLen += snprintf(line+currLen, totalLen-currLen, " -> %s",
filename);
}
currLen += snprintf(line+currLen, totalLen-currLen, "\n");
res = Curl_client_write(conn, CLIENTWRITE_BODY, line, 0);
free(line);
}
}
libssh2_sftp_closedir(sftp->sftp_handle);
sftp->sftp_handle = NULL;
/* no data to transfer */
res = Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
}
else {
/*
* Work on getting the specified file
*/
sftp->sftp_handle =
libssh2_sftp_open(sftp->sftp_session, sftp->path, LIBSSH2_FXF_READ,
LIBSSH2_SFTP_S_IRUSR|LIBSSH2_SFTP_S_IWUSR|
LIBSSH2_SFTP_S_IRGRP|LIBSSH2_SFTP_S_IROTH);
if (!sftp->sftp_handle)
return CURLE_SSH;
if (libssh2_sftp_stat(sftp->sftp_session, sftp->path, &attrs)) {
/*
* libssh2_sftp_open() didn't return an error, so maybe the server
* just doesn't support stat()
*/
data->reqdata.size = -1;
data->reqdata.maxdownload = -1;
}
else {
data->reqdata.size = attrs.filesize;
data->reqdata.maxdownload = attrs.filesize;
Curl_pgrsSetDownloadSize(data, attrs.filesize);
}
Curl_pgrsTime(data, TIMER_STARTTRANSFER);
/* Now download data. The libssh2 0.14 doesn't offer any way to do this
without using this BLOCKING approach, so here's room for improvement
once libssh2 can return EWOULDBLOCK to us. */
#if 0
/* code left here just because this is what this function will use the
day libssh2 is improved */
res = Curl_setup_transfer(conn, FIRSTSOCKET,
bytecount, FALSE, NULL, -1, NULL);
#endif
while (res == CURLE_OK) {
size_t nread;
/* NOTE: most *read() functions return ssize_t but this returns size_t
which normally is unsigned! */
nread = libssh2_sftp_read(data->reqdata.proto.ssh->sftp_handle,
buf, BUFSIZE-1);
if (nread > 0)
buf[nread] = 0;
/* this check can be changed to a <= 0 when nread is changed to a
signed variable type */
if ((nread == 0) || (nread == (size_t)~0))
break;
bytecount += nread;
res = Curl_client_write(conn, CLIENTWRITE_BODY, buf, nread);
if(res)
return res;
Curl_pgrsSetDownloadCounter(data, bytecount);
if(Curl_pgrsUpdate(conn))
res = CURLE_ABORTED_BY_CALLBACK;
else {
struct timeval now = Curl_tvnow();
res = Curl_speedcheck(data, now);
}
}
if(Curl_pgrsUpdate(conn))
res = CURLE_ABORTED_BY_CALLBACK;
/* no (more) data to transfer */
res = Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
}
}
return res;
}
