path: root/rpc/ipc_unix.go

// Copyright 2019 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris

package rpc

import (
    "context"
    "fmt"
    "net"
    "os"
    "path/filepath"

    "github.com/ethereum/go-ethereum/log"
)

// ipcListen will create a Unix socket on the given endpoint.
func ipcListen(endpoint string) (net.Listener, error) {
    if len(endpoint) > int(max_path_size) {
        log.Warn(fmt.Sprintf("The ipc endpoint is longer than %d characters. ", max_path_size),
            "endpoint", endpoint)
    }

    // Ensure the IPC path exists and remove any previous leftover
    if err := os.MkdirAll(filepath.Dir(endpoint), 0751); err != nil {
        return nil, err
    }
    os.Remove(endpoint)
    l, err := net.Listen("unix", endpoint)
    if err != nil {
        return nil, err
    }
    os.Chmod(endpoint, 0600)
    return l, nil
}

// newIPCConnection will connect to a Unix socket on the given endpoint.
func newIPCConnection(ctx context.Context, endpoint string) (net.Conn, error) {
    return dialContext(ctx, "unix", endpoint)
}