mirror of
https://gogs.blitter.com/RLabs/xs
synced 2024-08-14 10:26:42 +00:00
f5be3578a8
2/3 Added vendor/ dir to lock down dependent pkg versions.
The author of git.schwanenlied.me/yawning/{chacha20,newhope,kyber}.git has copied
their repos to gitlab.com/yawning/ but some imports of chacha20 from newhope still
inconsistently refer to git.schwanenlied.me/, breaking build.
Licenses for chacha20 also changed from CC0 to AGPL, which may or may not be an
issue. Until the two aforementioned issues are resolved, locking to last-good
versions is probably the best way forward for now.
To build with vendored deps, use make VENDOR=1 clean all
3/3 Moved body of CI push script into bacillus/
84 lines
2.7 KiB
Go
84 lines
2.7 KiB
Go
// Copyright 2012 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
|
|
|
|
package ipv4
|
|
|
|
import (
|
|
"net"
|
|
|
|
"golang.org/x/net/internal/socket"
|
|
)
|
|
|
|
// ReadFrom reads a payload of the received IPv4 datagram, from the
|
|
// endpoint c, copying the payload into b. It returns the number of
|
|
// bytes copied into b, the control message cm and the source address
|
|
// src of the received datagram.
|
|
func (c *payloadHandler) ReadFrom(b []byte) (n int, cm *ControlMessage, src net.Addr, err error) {
|
|
if !c.ok() {
|
|
return 0, nil, nil, errInvalidConn
|
|
}
|
|
c.rawOpt.RLock()
|
|
m := socket.Message{
|
|
OOB: NewControlMessage(c.rawOpt.cflags),
|
|
}
|
|
c.rawOpt.RUnlock()
|
|
switch c.PacketConn.(type) {
|
|
case *net.UDPConn:
|
|
m.Buffers = [][]byte{b}
|
|
if err := c.RecvMsg(&m, 0); err != nil {
|
|
return 0, nil, nil, &net.OpError{Op: "read", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: err}
|
|
}
|
|
case *net.IPConn:
|
|
h := make([]byte, HeaderLen)
|
|
m.Buffers = [][]byte{h, b}
|
|
if err := c.RecvMsg(&m, 0); err != nil {
|
|
return 0, nil, nil, &net.OpError{Op: "read", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: err}
|
|
}
|
|
hdrlen := int(h[0]&0x0f) << 2
|
|
if hdrlen > len(h) {
|
|
d := hdrlen - len(h)
|
|
copy(b, b[d:])
|
|
m.N -= d
|
|
} else {
|
|
m.N -= hdrlen
|
|
}
|
|
default:
|
|
return 0, nil, nil, &net.OpError{Op: "read", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: errInvalidConnType}
|
|
}
|
|
if m.NN > 0 {
|
|
if compatFreeBSD32 {
|
|
adjustFreeBSD32(&m)
|
|
}
|
|
cm = new(ControlMessage)
|
|
if err := cm.Parse(m.OOB[:m.NN]); err != nil {
|
|
return 0, nil, nil, &net.OpError{Op: "read", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: err}
|
|
}
|
|
cm.Src = netAddrToIP4(m.Addr)
|
|
}
|
|
return m.N, cm, m.Addr, nil
|
|
}
|
|
|
|
// WriteTo writes a payload of the IPv4 datagram, to the destination
|
|
// address dst through the endpoint c, copying the payload from b. It
|
|
// returns the number of bytes written. The control message cm allows
|
|
// the datagram path and the outgoing interface to be specified.
|
|
// Currently only Darwin and Linux support this. The cm may be nil if
|
|
// control of the outgoing datagram is not required.
|
|
func (c *payloadHandler) WriteTo(b []byte, cm *ControlMessage, dst net.Addr) (n int, err error) {
|
|
if !c.ok() {
|
|
return 0, errInvalidConn
|
|
}
|
|
m := socket.Message{
|
|
Buffers: [][]byte{b},
|
|
OOB: cm.Marshal(),
|
|
Addr: dst,
|
|
}
|
|
err = c.SendMsg(&m, 0)
|
|
if err != nil {
|
|
err = &net.OpError{Op: "write", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Addr: opAddr(dst), Err: err}
|
|
}
|
|
return m.N, err
|
|
}
|