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/*
* Copyright (C) 2008-2012 David Robillard <d@drobilla.net>
* Copyright (C) 2008-2016 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2013-2015 John Emmas <john@creativepost.co.uk>
* Copyright (C) 2015-2017 Robin Gareus <robin@gareus.org>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <unistd.h>
#include <cstring>
#include <climits>
#include <cerrno>
#include "pbd/gstdio_compat.h"
#include <glibmm/miscutils.h>
#include <glibmm/fileutils.h>
#include "pbd/basename.h"
#include "pbd/compose.h"
#include "pbd/file_archive.h"
#include "pbd/pathexpand.h"
#include "pbd/error.h"
#include "ardour/filename_extensions.h"
#include "ardour/utils.h"
#include "ardour/session_utils.h"
#include "pbd/i18n.h"
using namespace std;
using namespace PBD;
namespace ARDOUR {
int
find_session (string str, string& path, string& snapshot, bool& isnew)
{
GStatBuf statbuf;
isnew = false;
str = canonical_path (str);
/* check to see if it exists, and what it is */
if (g_stat (str.c_str(), &statbuf)) {
if (errno == ENOENT) {
isnew = true;
} else {
error << string_compose (_("cannot check session path %1 (%2)"), str, strerror (errno))
<< endmsg;
return -1;
}
}
if (!isnew) {
/* it exists, so it must either be the name
of the directory, or the name of the statefile
within it.
*/
if (S_ISDIR (statbuf.st_mode)) {
string::size_type slash = str.find_last_of (G_DIR_SEPARATOR);
if (slash == string::npos) {
/* a subdirectory of cwd, so statefile should be ... */
string tmp = Glib::build_filename (str, str+statefile_suffix);
/* is it there ? */
if (g_stat (tmp.c_str(), &statbuf)) {
error << string_compose (_("cannot check statefile %1 (%2)"), tmp, strerror (errno))
<< endmsg;
return -1;
}
path = str;
snapshot = str;
} else {
/* some directory someplace in the filesystem.
the snapshot name is the directory name
itself.
*/
path = str;
snapshot = str.substr (slash+1);
}
} else if (S_ISREG (statbuf.st_mode)) {
string::size_type slash = str.find_last_of (G_DIR_SEPARATOR);
string::size_type suffix;
/* remove the suffix */
if (slash != string::npos) {
snapshot = str.substr (slash+1);
} else {
snapshot = str;
}
suffix = snapshot.find (statefile_suffix);
const string::size_type start_pos_of_extension = snapshot.size () - strlen (statefile_suffix);
// we should check the start of extension position
// because files '*.ardour.bak' are possible
if (suffix != start_pos_of_extension) {
error << string_compose (_("%1 is not a snapshot file"), str) << endmsg;
return -1;
}
/* remove suffix */
snapshot = snapshot.substr (0, suffix);
if (slash == string::npos) {
/* we must be in the directory where the
statefile lives. get it using cwd().
*/
char cwd[PATH_MAX+1];
if (getcwd (cwd, sizeof (cwd)) == 0) {
error << string_compose (_("cannot determine current working directory (%1)"), strerror (errno))
<< endmsg;
return -1;
}
path = cwd;
} else {
/* full path to the statefile */
path = str.substr (0, slash);
}
} else {
/* what type of file is it? */
error << string_compose (_("unknown file type for session %1"), str) << endmsg;
return -1;
}
} else {
/* its the name of a new directory. get the name
as "dirname" does.
*/
string::size_type slash = str.find_last_of (G_DIR_SEPARATOR);
if (slash == string::npos) {
/* no slash, just use the name, but clean it up */
path = legalize_for_path (str);
snapshot = path;
} else {
path = str;
snapshot = str.substr (slash+1);
}
}
return 0;
}
/* check if zip is a session-archive,
* return > 0 if file is not an archive
* return < 0 if unzip failed
* return 0 on success. path and snapshot are set.
*/
int
inflate_session (const std::string& zipfile, const std::string& target_dir, string& path, string& snapshot)
{
if (zipfile.find (session_archive_suffix) == string::npos) {
return 1;
}
try {
PBD::FileArchive ar (zipfile);
std::vector<std::string> files = ar.contents ();
if (files.size () == 0) {
error << _("Archive is empty") << endmsg;
return 2;
}
/* session archives are expected to be named after the archive */
std::string bn = Glib::path_get_dirname (files.front());
if (bn.empty ()) {
error << _("Archive does not contain a session folder") << endmsg;
return 3;
}
size_t sep = bn.find_first_of ('/');
if (sep != string::npos) {
bn = bn.substr (0, sep);
}
if (bn.empty ()) {
error << _("Archive does not contain a valid session structure") << endmsg;
return 4;
}
string sn = Glib::build_filename (bn, bn + statefile_suffix);
if (std::find (files.begin(), files.end(), sn) == files.end()) {
error << _("Archive does not contain a session file") << endmsg;
return 5;
}
/* check if target folder exists */
string dest = Glib::build_filename (target_dir, bn);
if (Glib::file_test (dest, Glib::FILE_TEST_EXISTS)) {
error << string_compose (_("Destination '%1' already exists."), dest) << endmsg;
return -1;
}
if (0 == ar.inflate (target_dir)) {
info << string_compose (_("Extracted session-archive to '%1'."), dest) << endmsg;
path = dest;
snapshot = bn;
return 0;
}
} catch (...) {
error << _("Error reading file-archive") << endmsg;
return 6;
}
error << _("Error extracting file-archive") << endmsg;
return -2;
}
string inflate_error (int e) {
switch (e) {
case 0:
return _("No Error");
case 1:
return string_compose (_("File extension is not %1"), session_archive_suffix);
case 2:
return _("Archive is empty");
case 3:
return _("Archive does not contain a session folder");
case 4:
return _("Archive does not contain a valid session structure");
case 5:
return _("Archive does not contain a session file");
case 6:
return _("Error reading file-archive");
case -1:
return _("Destination folder already exists.");
case -2:
return _("Error extracting file-archive");
default:
assert (0);
break;
}
return _("Unknown Error");
}
} // namespace ARDOUR
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