int SyncTransferThread::do_touch_sftp_file_with_time(QString fileName, QDateTime time)
{
// sftp_open, 可以得到当前的文件属性
// sftp_close,
// 修改LIBSSH2_SFTP_ATTRIBUTE中的最后修改日期
// sftp_set_stat, 修改文件的最后修改日期。
LIBSSH2_SFTP_ATTRIBUTES attr;
int ret;
ret = libssh2_sftp_stat(this->ssh2_sftp, GlobalOption::instance()->remote_codec->fromUnicode(fileName), &attr);
if (ret != 0) {
//int libssh2_session_last_error(LIBSSH2_SESSION *session, char **errmsg, int *errmsg_len, int want_buf
char errmsg[200] = {0};
int emlen = 0;
libssh2_session_last_error(this->ssh2_sess, (char **)&errmsg, &emlen, 0);
q_debug()<<"sftp set stat error: "<<errmsg;
}
attr.flags = LIBSSH2_SFTP_ATTR_ACMODTIME;
attr.mtime = time.toTime_t();
ret = libssh2_sftp_setstat(this->ssh2_sftp, GlobalOption::instance()->remote_codec->fromUnicode(fileName), &attr);
if (ret != 0) {
char errmsg[200] = {0};
int emlen = 0;
libssh2_session_last_error(this->ssh2_sess, (char **)&errmsg, &emlen, 0);
q_debug()<<"sftp set stat error: "<<errmsg;
}
return 0;
}
// in which we fill the stat struct of sftppath using sftp
int get_file_stat_struct()
{
int res;
struct stat *buf = malloc(sizeof(struct stat));
if (buf == NULL)
fprintf(stderr, "malloc'ing struct stat returned NULL\n");
LIBSSH2_SFTP_ATTRIBUTES attrs;
res = libssh2_sftp_stat(sftp_session, sftppath, &attrs);
do {
if (res < 0 && res != LIBSSH2_ERROR_EAGAIN) {
// there /is/ an errno in here and stuff
fprintf(stderr, "sftp_stat failed 2\n");
exit(1);
}
} while (res == LIBSSH2_ERROR_EAGAIN);
buf->st_nlink = 1;
buf->st_uid = attrs.uid;
buf->st_gid = attrs.gid;
buf->st_atime = attrs.atime;
buf->st_mtime = attrs.mtime;
buf->st_ctime = attrs.mtime;
buf->st_size = attrs.filesize;
buf->st_mode = attrs.permissions;
return 0;
}
int FSSftp::Stat ( FSPath& path, FSStat* st, int* err, FSCInfo* info )
{
MutexLock lock( &mutex );
int ret = CheckSession( err, info );
if ( ret ) { return ret; }
char* fullPath = ( char* ) path.GetString( _operParam.charset, '/' );
try
{
SftpAttr attr;
int ret;
WHILE_EAGAIN_( ret, libssh2_sftp_lstat( sftpSession, fullPath, &attr.attr ) );
CheckSFTP( ret );
if ( attr.IsLink() )
{
char buf[4096];
int len;
WHILE_EAGAIN_( len, libssh2_sftp_readlink( sftpSession, fullPath, buf, sizeof( buf ) ) );
if ( len < 0 ) { CheckSFTP( len ); };
st->link.Set( _operParam.charset, buf );
int ret;
WHILE_EAGAIN_( ret, libssh2_sftp_stat( sftpSession, fullPath, &attr.attr ) );
if ( ret ) { attr.attr.permissions = 0; }
}
st->mode = attr.Permissions();
st->size = attr.Size();
st->uid = attr.Uid();
st->gid = attr.Gid();
st->mtime = attr.MTime();
}
catch ( int e )
{
st->mode = 0;
if ( err ) { *err = e; }
return ( e == -2 ) ? -2 : -1;
}
return 0;
}
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;
}
static int uwsgi_ssh_request_file(
struct wsgi_request *wsgi_req,
char* filepath,
struct uwsgi_ssh_mountpoint *usm
) {
int sock = -1;
int return_status = 0;
LIBSSH2_SESSION *session = NULL;
if (uwsgi_init_ssh_session(usm, &sock, &session)) {
uwsgi_log("[SSH] session initialization failed. Is the SSH server up?\n");
return_status = 500;
goto shutdown;
}
LIBSSH2_SFTP *sftp_session = NULL;
do {
sftp_session = libssh2_sftp_init(session);
if (!sftp_session) {
if ((libssh2_session_last_errno(session)) == LIBSSH2_ERROR_EAGAIN) {
if (uwsgi_ssh_waitsocket(sock, session)) {
return_status = 500;
goto shutdown;
}
} else {
uwsgi_error("uwsgi_ssh_request_file()/libssh2_sftp_init()");
return_status = 500;
goto shutdown;
}
}
} while (!sftp_session);
// Request file stats via SFTP
LIBSSH2_SFTP_ATTRIBUTES file_attrs;
int rc;
while ((rc = libssh2_sftp_stat(sftp_session, filepath, &file_attrs)) == LIBSSH2_ERROR_EAGAIN) {
if (uwsgi_ssh_waitsocket(sock, session)) {
return_status = 500;
goto shutdown;
}
}
if (rc < 0) {
// If it fails, requested file could not exist.
if (rc == LIBSSH2_ERROR_SFTP_PROTOCOL && libssh2_sftp_last_error(sftp_session) == LIBSSH2_FX_NO_SUCH_FILE) {
return_status = 404;
} else {
uwsgi_error("uwsgi_ssh_request_file()/libssh2_sftp_stat()");
return_status = 500;
}
goto sftp_shutdown;
}
if (wsgi_req->if_modified_since_len) {
time_t ims = uwsgi_parse_http_date(wsgi_req->if_modified_since, wsgi_req->if_modified_since_len);
if (file_attrs.mtime <= (unsigned long)ims) {
if (uwsgi_response_prepare_headers(wsgi_req, "304 Not Modified", 16) || uwsgi_response_write_headers_do(wsgi_req)) {
uwsgi_error("uwsgi_parse_http_date()/uwsgi_response_prepare_headers(do)()");
}
return_status = 500;
goto sftp_shutdown;
}
}
if (uwsgi_response_prepare_headers(wsgi_req, "200", 3)) {
uwsgi_error("uwsgi_ssh_request_file()/uwsgi_response_prepare_headers()");
return_status = 500;
goto sftp_shutdown;
}
if (uwsgi_response_add_content_length(wsgi_req, file_attrs.filesize)) {
uwsgi_error("uwsgi_ssh_request_file()/uwsgi_response_add_content_length()");
return_status = 500;
goto sftp_shutdown;
}
if (uwsgi_response_add_last_modified(wsgi_req, file_attrs.mtime)) {
uwsgi_error("uwsgi_ssh_request_file()/uwsgi_response_add_last_modified()");
return_status = 500;
goto sftp_shutdown;
}
size_t mime_type_len = 0;
char *mime_type = uwsgi_get_mime_type(filepath, strlen(filepath), &mime_type_len);
if (mime_type) {
if (uwsgi_response_add_content_type(wsgi_req, mime_type, mime_type_len)) {
uwsgi_error("uwsgi_ssh_request_file()/uwsgi_response_add_content_type()");
// goto sftp_shutdown;
}
}
// Request a file via SFTP
LIBSSH2_SFTP_HANDLE *sftp_handle = NULL;
do {
sftp_handle = libssh2_sftp_open(sftp_session, filepath, LIBSSH2_FXF_READ, 0);
if (!sftp_handle) {
if (libssh2_session_last_errno(session) != LIBSSH2_ERROR_EAGAIN) {
uwsgi_error("uwsgi_ssh_request_file()/libssh2_sftp_open()");
return_status = 500;
goto sftp_shutdown;
} else {
if (uwsgi_ssh_waitsocket(sock, session)) {
return_status = 500;
goto sftp_shutdown;
}
}
}
} while (!sftp_handle);
size_t buffer_size = uwsgi.page_size;
void *buffer = alloca(buffer_size);
libssh2_uint64_t read_size = 0;
while (read_size < file_attrs.filesize) {
rc = libssh2_sftp_read(sftp_handle, buffer, buffer_size);
if (rc == LIBSSH2_ERROR_EAGAIN) {
if (uwsgi_ssh_waitsocket(sock, session)) {
return_status = 500;
goto sftp_shutdown;
}
} else if (rc < 0) {
uwsgi_error("uwsgi_ssh_request_file()/libssh2_sftp_read()");
break;
} else {
read_size += rc;
if (uwsgi_response_write_body_do(wsgi_req, buffer, rc)) {
uwsgi_error("uwsgi_ssh_request_file()/uwsgi_response_write_body_do()");
break;
}
}
}
while ((rc = libssh2_sftp_close(sftp_handle)) == LIBSSH2_ERROR_EAGAIN) {
if (uwsgi_ssh_waitsocket(sock, session)) {
return_status = 500;
goto sftp_shutdown;
}
};
if (rc < 0) {
uwsgi_error("uwsgi_ssh_request_file()/libssh2_sftp_close()");
}
sftp_shutdown:
while ((rc = libssh2_sftp_shutdown(sftp_session)) == LIBSSH2_ERROR_EAGAIN) {
uwsgi_ssh_waitsocket(sock, session);
}
if (rc < 0) {
uwsgi_error("uwsgi_ssh_request_file()/libssh2_sftp_shutdown()");
}
shutdown:
while (libssh2_session_disconnect(session, "Normal Shutdown, thank you!") == LIBSSH2_ERROR_EAGAIN) {
uwsgi_ssh_waitsocket(sock, session);
}
libssh2_session_free(session);
close(sock);
libssh2_exit();
return return_status;
}
void
PJSSH::PutStream(std::istream & aStream, const char* aRemoteFileName) const
{
//Check if local file exists
if(!aStream)
{
std::string error("The local file does not exist");
throw std::runtime_error(error);
}
LIBSSH2_SFTP* sftp = libssh2_sftp_init(mSession);
if( NULL == sftp )
{
throw std::runtime_error("Failed to open a sftp session.");
}
//Check if remote file exitst
LIBSSH2_SFTP_ATTRIBUTES fileinfo;
int status = libssh2_sftp_stat(sftp, aRemoteFileName , &fileinfo);
if(status == 0)
{
//File exitsts
std::string error("The file " + std::string(aRemoteFileName) + " alerady exists");
throw std::runtime_error(error);
}
LIBSSH2_SFTP_HANDLE* file_handle
= libssh2_sftp_open(sftp,aRemoteFileName,
LIBSSH2_FXF_TRUNC | LIBSSH2_FXF_WRITE | LIBSSH2_FXF_CREAT,0);
if( NULL == file_handle )
{
std::ostringstream o;
o<<"Failed to write on remote file. Last error code="
<<libssh2_sftp_last_error(sftp);
throw std::runtime_error(o.str());
}
char buffer[1024];
do
{
aStream.read(buffer,1024);
const std::streamsize num_of_read_characters(aStream.gcount());
if( num_of_read_characters > 0 )
{
const size_t num_of_bytes_written
= libssh2_sftp_write( file_handle, buffer, num_of_read_characters);
if( num_of_bytes_written == ((size_t)-1) )
{
throw std::runtime_error("Failed to write to the remote file.");
}
else if( static_cast<std::streamsize>(num_of_bytes_written)
!= num_of_read_characters )
{
throw std::runtime_error("Failed to write all bytes to remote file.");
}
else if(num_of_read_characters <= 0)
{
throw std::runtime_error("Failed to read characters from the input "
"stream to be written to the remote file.");
}
}
} while( aStream );
// Close sftp file handle and end SFTP session.
libssh2_sftp_close_handle(file_handle);
libssh2_sftp_shutdown(sftp);
}
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;
}
