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/*
Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
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.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/** @file src/scp_dcp_job.cc
* @brief A job to copy DCPs to a SCP-enabled server.
*/
#include <iostream>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <boost/filesystem.hpp>
#include <libssh/libssh.h>
#include "compose.hpp"
#include "scp_dcp_job.h"
#include "exceptions.h"
#include "config.h"
#include "log.h"
#include "film.h"
using std::string;
using std::stringstream;
using std::min;
using boost::shared_ptr;
class SSHSession
{
public:
SSHSession ()
: _connected (false)
{
session = ssh_new ();
if (session == 0) {
throw NetworkError ("Could not start SSH session");
}
}
int connect ()
{
int r = ssh_connect (session);
if (r == 0) {
_connected = true;
}
return r;
}
~SSHSession ()
{
if (_connected) {
ssh_disconnect (session);
}
ssh_free (session);
}
ssh_session session;
private:
bool _connected;
};
class SSHSCP
{
public:
SSHSCP (ssh_session s)
{
scp = ssh_scp_new (s, SSH_SCP_WRITE | SSH_SCP_RECURSIVE, Config::instance()->tms_path().c_str ());
if (!scp) {
throw NetworkError (String::compose ("Could not start SCP session (%1)", ssh_get_error (s)));
}
}
~SSHSCP ()
{
ssh_scp_free (scp);
}
ssh_scp scp;
};
SCPDCPJob::SCPDCPJob (shared_ptr<Film> f, shared_ptr<Job> req)
: Job (f, req)
, _status ("Waiting")
{
}
string
SCPDCPJob::name () const
{
return "Copy DCP to TMS";
}
void
SCPDCPJob::run ()
{
_film->log()->log ("SCP DCP job starting");
SSHSession ss;
set_status ("connecting");
ssh_options_set (ss.session, SSH_OPTIONS_HOST, Config::instance()->tms_ip().c_str ());
ssh_options_set (ss.session, SSH_OPTIONS_USER, Config::instance()->tms_user().c_str ());
int const port = 22;
ssh_options_set (ss.session, SSH_OPTIONS_PORT, &port);
int r = ss.connect ();
if (r != SSH_OK) {
throw NetworkError (String::compose ("Could not connect to server %1 (%2)", Config::instance()->tms_ip(), ssh_get_error (ss.session)));
}
int const state = ssh_is_server_known (ss.session);
if (state == SSH_SERVER_ERROR) {
throw NetworkError (String::compose ("SSH error (%1)", ssh_get_error (ss.session)));
}
r = ssh_userauth_password (ss.session, 0, Config::instance()->tms_password().c_str ());
if (r != SSH_AUTH_SUCCESS) {
throw NetworkError (String::compose ("Failed to authenticate with server (%1)", ssh_get_error (ss.session)));
}
SSHSCP sc (ss.session);
r = ssh_scp_init (sc.scp);
if (r != SSH_OK) {
throw NetworkError (String::compose ("Could not start SCP session (%1)", ssh_get_error (ss.session)));
}
r = ssh_scp_push_directory (sc.scp, _film->dcp_name().c_str(), S_IRWXU);
if (r != SSH_OK) {
throw NetworkError (String::compose ("Could not create remote directory %1 (%2)", _film->dcp_name(), ssh_get_error (ss.session)));
}
string const dcp_dir = _film->dir (_film->dcp_name());
boost::uintmax_t bytes_to_transfer = 0;
for (boost::filesystem::directory_iterator i = boost::filesystem::directory_iterator (dcp_dir); i != boost::filesystem::directory_iterator(); ++i) {
bytes_to_transfer += boost::filesystem::file_size (*i);
}
boost::uintmax_t buffer_size = 64 * 1024;
char buffer[buffer_size];
boost::uintmax_t bytes_transferred = 0;
for (boost::filesystem::directory_iterator i = boost::filesystem::directory_iterator (dcp_dir); i != boost::filesystem::directory_iterator(); ++i) {
/* Aah, the sweet smell of progress */
#if BOOST_FILESYSTEM_VERSION == 3
string const leaf = boost::filesystem::path(*i).leaf().generic_string ();
#else
string const leaf = i->leaf ();
#endif
set_status ("copying " + leaf);
boost::uintmax_t to_do = boost::filesystem::file_size (*i);
ssh_scp_push_file (sc.scp, leaf.c_str(), to_do, S_IRUSR | S_IWUSR);
FILE* f = fopen (boost::filesystem::path (*i).string().c_str(), "rb");
if (f == 0) {
throw NetworkError (String::compose ("Could not open %1 to send", *i));
}
while (to_do > 0) {
int const t = min (to_do, buffer_size);
size_t const read = fread (buffer, 1, t, f);
if (read != size_t (t)) {
throw ReadFileError (boost::filesystem::path (*i).string());
}
r = ssh_scp_write (sc.scp, buffer, t);
if (r != SSH_OK) {
throw NetworkError (String::compose ("Could not write to remote file (%1)", ssh_get_error (ss.session)));
}
to_do -= t;
bytes_transferred += t;
set_progress ((double) bytes_transferred / bytes_to_transfer);
}
fclose (f);
}
set_progress (1);
set_status ("");
set_state (FINISHED_OK);
}
string
SCPDCPJob::status () const
{
boost::mutex::scoped_lock lm (_status_mutex);
stringstream s;
s << Job::status ();
if (!_status.empty ()) {
s << "; " << _status;
}
return s.str ();
}
void
SCPDCPJob::set_status (string s)
{
boost::mutex::scoped_lock lm (_status_mutex);
_status = s;
}
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