Official Go implementation of the Ethereum protocol
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 
go-ethereum/rpc/ipc_unix.go

64 lines
2.1 KiB

// Copyright 2015 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/>.
//go:build darwin || dragonfly || freebsd || linux || nacl || netbsd || openbsd || solaris
// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris
package rpc
import (
"context"
"fmt"
"net"
"os"
"path/filepath"
"syscall"
"github.com/ethereum/go-ethereum/log"
)
const (
// The limit of unix domain socket path diverse between OS, on Darwin it's 104 bytes
// but on Linux it's 108 byte, so we should depend on syscall.RawSockaddrUnix's
// definition dynamically
maxPathSize = len(syscall.RawSockaddrUnix{}.Path)
)
// ipcListen will create a Unix socket on the given endpoint.
func ipcListen(endpoint string) (net.Listener, error) {
// account for null-terminator too
if len(endpoint)+1 > maxPathSize {
log.Warn(fmt.Sprintf("The ipc endpoint is longer than %d characters. ", maxPathSize-1),
"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 new(net.Dialer).DialContext(ctx, "unix", endpoint)
}