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BACKENDS: Add possibility to specify virtual drive in ChRootFilesystemFactory

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It allows to get access to additional directories outside of the sandbox root.
This is used on iOS to access files in the app bundle.
This commit is contained in:
Thierry Crozat 2023-03-19 23:30:11 +00:00 • committed by Eugene Sandulenko
parent 9bf4f3609a
commit 148892f102
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5 changed files with 47 additions and 14 deletions
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17
backends/fs/chroot/chroot-fs-factory.cpp
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@ -47,16 +47,31 @@ AbstractFSNode *ChRootFilesystemFactory::makeCurrentDirectoryFileNode() const {
return NULL;
}
if (Common::String(buf).hasPrefix(_root + Common::String("/"))) {
Common::String curPath(buf);
if (curPath.hasPrefix(_root + Common::String("/"))) {
return new ChRootFilesystemNode(_root, buf + _root.size());
}
for (auto it = _virtualDrives.begin() ; it != _virtualDrives.end() ; ++it) {
if (curPath.hasPrefix(it->_value + Common::String("/")))
return new ChRootFilesystemNode(it->_value, buf + it->_value.size(), it->_key);
}
return new ChRootFilesystemNode(_root, "/");
}
AbstractFSNode *ChRootFilesystemFactory::makeFileNodePath(const Common::String &path) const {
assert(!path.empty());
size_t driveEnd = path.findFirstOf('/');
if (driveEnd != Common::String::npos && driveEnd > 0) {
auto it = _virtualDrives.find(path.substr(0, driveEnd));
if (it != _virtualDrives.end())
return new ChRootFilesystemNode(it->_value, path.substr(driveEnd), it->_key);
}
return new ChRootFilesystemNode(_root, path);
}
void ChRootFilesystemFactory::addVirtualDrive(const Common::String &name, const Common::String &path) {
_virtualDrives[name] = path;
}
#endif