ssh.hh

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#pragma once
 
#include "lix/libutil/file-system.hh"
#include "lix/libutil/processes.hh"
#include "lix/libutil/sync.hh"
#include <cstdint>
 
namespace nix {
 
class SSHMaster
{
private:
 
    const std::string host;
    const std::optional<uint16_t> port;
    bool fakeSSH;
    const std::string keyFile;
    const std::string sshPublicHostKey;
    const bool useMaster;
    const bool compress;
    const int logFD;
 
    struct State
    {
        Pid sshMaster;
        std::unique_ptr<AutoDelete> tmpDir;
        Path socketPath;
    };
 
    Sync<State> state_;
 
    void addCommonSSHOpts(Strings & args);
    bool isMasterRunning();
 
public:
 
    SSHMaster(const std::string & host, const std::optional<uint16_t> port, const std::string & keyFile, const std::string & sshPublicHostKey, bool useMaster, bool compress, int logFD = -1);
 
    struct Connection
    {
        Pid sshPid;
        AutoCloseFD out, in;
    };
 
    std::unique_ptr<Connection> startCommand(const std::string & command);
 
    Path startMaster();
};
 
}