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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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.
*
*/
// Re-enable some forbidden symbols to avoid clashes with stat.h and unistd.h.
// Also with clock() in sys/time.h in some Mac OS X SDKs.
#define FORBIDDEN_SYMBOL_EXCEPTION_time_h //On IRIX, sys/stat.h includes sys/time.h
#define FORBIDDEN_SYMBOL_EXCEPTION_mkdir
#define FORBIDDEN_SYMBOL_EXCEPTION_getenv
#include "common/scummsys.h"
#if defined(POSIX) && !defined(DISABLE_DEFAULT_SAVEFILEMANAGER)
#include "backends/saves/posix/posix-saves.h"
#include "backends/fs/posix/posix-fs.h"
#include "common/config-manager.h"
#include "common/savefile.h"
#include "common/textconsole.h"
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/stat.h>
POSIXSaveFileManager::POSIXSaveFileManager() {
// Register default savepath.
#if defined(SAMSUNGTV)
ConfMan.registerDefault("savepath", "/mtd_wiselink/scummvm savegames");
#elif defined(NINTENDO_SWITCH)
Posix::assureDirectoryExists("./saves", nullptr);
ConfMan.registerDefault("savepath", "./saves");
#else
Common::String savePath;
#if defined(MACOSX)
const char *home = getenv("HOME");
if (home && *home && strlen(home) < MAXPATHLEN) {
savePath = home;
savePath += "/Documents/ScummVM Savegames";
ConfMan.registerDefault("savepath", savePath);
}
#else
const char *envVar;
// Previously we placed our default savepath in HOME. If the directory
// still exists, we will use it for backwards compatability.
envVar = getenv("HOME");
if (envVar && *envVar) {
savePath = envVar;
savePath += "/.scummvm";
struct stat sb;
if (stat(savePath.c_str(), &sb) != 0 || !S_ISDIR(sb.st_mode)) {
savePath.clear();
}
}
if (savePath.empty()) {
Common::String prefix;
// On POSIX systems we follow the XDG Base Directory Specification for
// where to store files. The version we based our code upon can be found
// over here: http://standards.freedesktop.org/basedir-spec/basedir-spec-0.8.html
envVar = getenv("XDG_DATA_HOME");
if (!envVar || !*envVar) {
envVar = getenv("HOME");
if (envVar && *envVar) {
prefix = envVar;
savePath = ".local/share/";
}
} else {
prefix = envVar;
}
// Our default save path is '$XDG_DATA_HOME/scummvm/saves'
savePath += "scummvm/saves";
if (!Posix::assureDirectoryExists(savePath, prefix.c_str())) {
savePath.clear();
} else {
savePath = prefix + '/' + savePath;
}
}
if (!savePath.empty() && savePath.size() < MAXPATHLEN) {
ConfMan.registerDefault("savepath", savePath);
}
#endif
// The user can override the savepath with the SCUMMVM_SAVEPATH
// environment variable. This is weaker than a --savepath on the
// command line, but overrides the default savepath.
//
// To ensure that the command line option (if given) has precedence,
// we only set the value in the transient domain if it is not
// yet present there.
if (!ConfMan.hasKey("savepath", Common::ConfigManager::kTransientDomain)) {
const char *dir = getenv("SCUMMVM_SAVEPATH");
if (dir && *dir && strlen(dir) < MAXPATHLEN) {
Common::FSNode saveDir(dir);
if (!saveDir.exists()) {
warning("Ignoring non-existent SCUMMVM_SAVEPATH '%s'", dir);
} else if (!saveDir.isWritable()) {
warning("Ignoring non-writable SCUMMVM_SAVEPATH '%s'", dir);
} else {
ConfMan.set("savepath", dir, Common::ConfigManager::kTransientDomain);
}
}
}
#endif
}
void POSIXSaveFileManager::checkPath(const Common::FSNode &dir) {
const Common::String path = dir.getPath();
clearError();
struct stat sb;
// Check whether the dir exists
if (stat(path.c_str(), &sb) == -1) {
// The dir does not exist, or stat failed for some other reason.
// If the problem was that the path pointed to nothing, try
// to create the dir (ENOENT case).
switch (errno) {
case EACCES:
setError(Common::kWritePermissionDenied, "Search or write permission denied: "+path);
break;
case ELOOP:
setError(Common::kUnknownError, "Too many symbolic links encountered while traversing the path: "+path);
break;
case ENAMETOOLONG:
setError(Common::kUnknownError, "The path name is too long: "+path);
break;
case ENOENT:
if (mkdir(path.c_str(), 0755) != 0) {
// mkdir could fail for various reasons: The parent dir doesn't exist,
// or is not writeable, the path could be completly bogus, etc.
warning("mkdir for '%s' failed", path.c_str());
perror("mkdir");
switch (errno) {
case EACCES:
setError(Common::kWritePermissionDenied, "Search or write permission denied: "+path);
break;
case EMLINK:
setError(Common::kUnknownError, "The link count of the parent directory would exceed {LINK_MAX}: "+path);
break;
case ELOOP:
setError(Common::kUnknownError, "Too many symbolic links encountered while traversing the path: "+path);
break;
case ENAMETOOLONG:
setError(Common::kUnknownError, "The path name is too long: "+path);
break;
case ENOENT:
setError(Common::kPathDoesNotExist, "A component of the path does not exist, or the path is an empty string: "+path);
break;
case ENOTDIR:
setError(Common::kPathDoesNotExist, "A component of the path prefix is not a directory: "+path);
break;
case EROFS:
setError(Common::kWritePermissionDenied, "The parent directory resides on a read-only file system:"+path);
break;
}
}
break;
case ENOTDIR:
setError(Common::kPathDoesNotExist, "A component of the path prefix is not a directory: "+path);
break;
}
} else {
// So stat() succeeded. But is the path actually pointing to a directory?
if (!S_ISDIR(sb.st_mode)) {
setError(Common::kPathDoesNotExist, "The given savepath is not a directory: "+path);
}
}
}
#endif
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