93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
|
#include "ssh-store.hh"
|
||
|
|
#include "remote-fs-accessor.hh"
|
||
|
|
#include "archive.hh"
|
||
|
|
#include "worker-protocol.hh"
|
||
|
|
#include "pool.hh"
|
||
|
|
|
||
|
|
namespace nix {
|
||
|
|
|
||
|
|
SSHStore::SSHStore(string uri, const Params & params, size_t maxConnections)
|
||
|
|
: Store(params)
|
||
|
|
, RemoteStore(params, maxConnections)
|
||
|
|
, tmpDir(createTempDir("", "nix", true, true, 0700))
|
||
|
|
, socketPath((Path) tmpDir + "/ssh.sock")
|
||
|
|
, sshMaster(startProcess([&]() {
|
||
|
|
auto key = get(params, "ssh-key", "");
|
||
|
|
if (key.empty())
|
||
|
|
execlp("ssh", "ssh", "-N", "-M", "-S", socketPath.c_str(), uri.c_str(), NULL);
|
||
|
|
else
|
||
|
|
execlp("ssh", "ssh", "-N", "-M", "-S", socketPath.c_str(), "-i", key.c_str(), uri.c_str(), NULL);
|
||
|
|
throw SysError("starting ssh master");
|
||
|
|
}))
|
||
|
|
, uri(std::move(uri))
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
string SSHStore::getUri()
|
||
|
|
{
|
||
|
|
return "ssh://" + uri;
|
||
|
|
}
|
||
|
|
|
||
|
|
class ForwardSource : public Source
|
||
|
|
{
|
||
|
|
Source & readSource;
|
||
|
|
Sink & writeSink;
|
||
|
|
public:
|
||
|
|
ForwardSource(Source & readSource, Sink & writeSink) : readSource(readSource), writeSink(writeSink) {}
|
||
|
|
size_t read(unsigned char * data, size_t len) override
|
||
|
|
{
|
||
|
|
auto res = readSource.read(data, len);
|
||
|
|
writeSink(data, len);
|
||
|
|
return res;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
void SSHStore::narFromPath(const Path & path, Sink & sink)
|
||
|
|
{
|
||
|
|
auto conn(connections->get());
|
||
|
|
conn->to << wopNarFromPath << path;
|
||
|
|
conn->processStderr();
|
||
|
|
ParseSink ps;
|
||
|
|
auto fwd = ForwardSource(conn->from, sink);
|
||
|
|
parseDump(ps, fwd);
|
||
|
|
}
|
||
|
|
|
||
|
|
ref<FSAccessor> SSHStore::getFSAccessor()
|
||
|
|
{
|
||
|
|
return make_ref<RemoteFSAccessor>(ref<Store>(shared_from_this()));
|
||
|
|
}
|
||
|
|
|
||
|
|
ref<RemoteStore::Connection> SSHStore::openConnection()
|
||
|
|
{
|
||
|
|
auto conn = make_ref<Connection>();
|
||
|
|
Pipe in, out;
|
||
|
|
in.create();
|
||
|
|
out.create();
|
||
|
|
conn->sshPid = startProcess([&]() {
|
||
|
|
if (dup2(in.readSide.get(), STDIN_FILENO) == -1)
|
||
|
|
throw SysError("duping over STDIN");
|
||
|
|
if (dup2(out.writeSide.get(), STDOUT_FILENO) == -1)
|
||
|
|
throw SysError("duping over STDOUT");
|
||
|
|
execlp("ssh", "ssh", "-S", socketPath.c_str(), uri.c_str(), "nix-daemon", "--stdio", NULL);
|
||
|
|
throw SysError("executing nix-daemon --stdio over ssh");
|
||
|
|
});
|
||
|
|
in.readSide = -1;
|
||
|
|
out.writeSide = -1;
|
||
|
|
conn->out = std::move(out.readSide);
|
||
|
|
conn->in = std::move(in.writeSide);
|
||
|
|
conn->to = FdSink(conn->in.get());
|
||
|
|
conn->from = FdSource(conn->out.get());
|
||
|
|
initConnection(*conn);
|
||
|
|
return conn;
|
||
|
|
}
|
||
|
|
|
||
|
|
static RegisterStoreImplementation regStore([](
|
||
|
|
const std::string & uri, const Store::Params & params)
|
||
|
|
-> std::shared_ptr<Store>
|
||
|
|
{
|
||
|
|
if (std::string(uri, 0, 6) != "ssh://") return 0;
|
||
|
|
return std::make_shared<SSHStore>(uri.substr(6), params);
|
||
|
|
});
|
||
|
|
|
||
|
|
}
|