mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-10-27 10:29:23 +00:00
274 lines
8.2 KiB
C++
274 lines
8.2 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/StringView.h>
|
|
#include <Kernel/Debug.h>
|
|
#include <Kernel/FileSystem/FileDescription.h>
|
|
#include <Kernel/Net/IPv4Socket.h>
|
|
#include <Kernel/Net/LocalSocket.h>
|
|
#include <Kernel/Net/NetworkingManagement.h>
|
|
#include <Kernel/Net/Socket.h>
|
|
#include <Kernel/Process.h>
|
|
#include <Kernel/UnixTypes.h>
|
|
#include <LibC/errno_numbers.h>
|
|
|
|
namespace Kernel {
|
|
|
|
KResultOr<NonnullRefPtr<Socket>> Socket::create(int domain, int type, int protocol)
|
|
{
|
|
switch (domain) {
|
|
case AF_LOCAL:
|
|
return LocalSocket::create(type & SOCK_TYPE_MASK);
|
|
case AF_INET:
|
|
return IPv4Socket::create(type & SOCK_TYPE_MASK, protocol);
|
|
default:
|
|
return EAFNOSUPPORT;
|
|
}
|
|
}
|
|
|
|
Socket::Socket(int domain, int type, int protocol)
|
|
: m_domain(domain)
|
|
, m_type(type)
|
|
, m_protocol(protocol)
|
|
{
|
|
auto& process = *Process::current();
|
|
m_origin = { process.pid().value(), process.uid(), process.gid() };
|
|
}
|
|
|
|
Socket::~Socket()
|
|
{
|
|
}
|
|
|
|
void Socket::set_setup_state(SetupState new_setup_state)
|
|
{
|
|
dbgln_if(SOCKET_DEBUG, "Socket({}) setup state moving from {} to {}", this, to_string(m_setup_state), to_string(new_setup_state));
|
|
m_setup_state = new_setup_state;
|
|
evaluate_block_conditions();
|
|
}
|
|
|
|
RefPtr<Socket> Socket::accept()
|
|
{
|
|
Locker locker(m_lock);
|
|
if (m_pending.is_empty())
|
|
return nullptr;
|
|
dbgln_if(SOCKET_DEBUG, "Socket({}) de-queueing connection", this);
|
|
auto client = m_pending.take_first();
|
|
VERIFY(!client->is_connected());
|
|
auto& process = *Process::current();
|
|
client->m_acceptor = { process.pid().value(), process.uid(), process.gid() };
|
|
client->m_connected = true;
|
|
client->m_role = Role::Accepted;
|
|
if (!m_pending.is_empty())
|
|
evaluate_block_conditions();
|
|
return client;
|
|
}
|
|
|
|
KResult Socket::queue_connection_from(NonnullRefPtr<Socket> peer)
|
|
{
|
|
dbgln_if(SOCKET_DEBUG, "Socket({}) queueing connection", this);
|
|
Locker locker(m_lock);
|
|
if (m_pending.size() >= m_backlog)
|
|
return ECONNREFUSED;
|
|
if (!m_pending.try_append(peer))
|
|
return ENOMEM;
|
|
evaluate_block_conditions();
|
|
return KSuccess;
|
|
}
|
|
|
|
KResult Socket::setsockopt(int level, int option, Userspace<const void*> user_value, socklen_t user_value_size)
|
|
{
|
|
if (level != SOL_SOCKET)
|
|
return ENOPROTOOPT;
|
|
VERIFY(level == SOL_SOCKET);
|
|
switch (option) {
|
|
case SO_SNDTIMEO:
|
|
if (user_value_size != sizeof(timeval))
|
|
return EINVAL;
|
|
{
|
|
auto timeout = copy_time_from_user(static_ptr_cast<const timeval*>(user_value));
|
|
if (!timeout.has_value())
|
|
return EFAULT;
|
|
m_send_timeout = timeout.value();
|
|
}
|
|
return KSuccess;
|
|
case SO_RCVTIMEO:
|
|
if (user_value_size != sizeof(timeval))
|
|
return EINVAL;
|
|
{
|
|
auto timeout = copy_time_from_user(static_ptr_cast<const timeval*>(user_value));
|
|
if (!timeout.has_value())
|
|
return EFAULT;
|
|
m_receive_timeout = timeout.value();
|
|
}
|
|
return KSuccess;
|
|
case SO_BINDTODEVICE: {
|
|
if (user_value_size != IFNAMSIZ)
|
|
return EINVAL;
|
|
auto user_string = static_ptr_cast<const char*>(user_value);
|
|
auto ifname = copy_string_from_user(user_string, user_value_size);
|
|
if (ifname.is_null())
|
|
return EFAULT;
|
|
auto device = NetworkingManagement::the().lookup_by_name(ifname);
|
|
if (!device)
|
|
return ENODEV;
|
|
m_bound_interface = device;
|
|
return KSuccess;
|
|
}
|
|
case SO_KEEPALIVE:
|
|
// FIXME: Obviously, this is not a real keepalive.
|
|
return KSuccess;
|
|
case SO_TIMESTAMP:
|
|
if (user_value_size != sizeof(int))
|
|
return EINVAL;
|
|
{
|
|
int timestamp;
|
|
if (!copy_from_user(×tamp, static_ptr_cast<const int*>(user_value)))
|
|
return EFAULT;
|
|
m_timestamp = timestamp;
|
|
}
|
|
if (m_timestamp && (domain() != AF_INET || type() == SOCK_STREAM)) {
|
|
// FIXME: Support SO_TIMESTAMP for more protocols?
|
|
m_timestamp = 0;
|
|
return ENOTSUP;
|
|
}
|
|
return KSuccess;
|
|
default:
|
|
dbgln("setsockopt({}) at SOL_SOCKET not implemented.", option);
|
|
return ENOPROTOOPT;
|
|
}
|
|
}
|
|
|
|
KResult Socket::getsockopt(FileDescription&, int level, int option, Userspace<void*> value, Userspace<socklen_t*> value_size)
|
|
{
|
|
socklen_t size;
|
|
if (!copy_from_user(&size, value_size.unsafe_userspace_ptr()))
|
|
return EFAULT;
|
|
|
|
// FIXME: Add TCP_NODELAY, IPPROTO_TCP and IPPROTO_IP (used in OpenSSH)
|
|
if (level != SOL_SOCKET) {
|
|
// Not sure if this is the correct error code, but it's only temporary until other levels are implemented.
|
|
return ENOPROTOOPT;
|
|
}
|
|
|
|
switch (option) {
|
|
case SO_SNDTIMEO:
|
|
if (size < sizeof(timeval))
|
|
return EINVAL;
|
|
{
|
|
timeval tv = m_send_timeout.to_timeval();
|
|
if (!copy_to_user(static_ptr_cast<timeval*>(value), &tv))
|
|
return EFAULT;
|
|
}
|
|
size = sizeof(timeval);
|
|
if (!copy_to_user(value_size, &size))
|
|
return EFAULT;
|
|
return KSuccess;
|
|
case SO_RCVTIMEO:
|
|
if (size < sizeof(timeval))
|
|
return EINVAL;
|
|
{
|
|
timeval tv = m_send_timeout.to_timeval();
|
|
if (!copy_to_user(static_ptr_cast<timeval*>(value), &tv))
|
|
return EFAULT;
|
|
}
|
|
size = sizeof(timeval);
|
|
if (!copy_to_user(value_size, &size))
|
|
return EFAULT;
|
|
return KSuccess;
|
|
case SO_ERROR: {
|
|
if (size < sizeof(int))
|
|
return EINVAL;
|
|
dbgln("getsockopt(SO_ERROR): FIXME!");
|
|
int errno = 0;
|
|
if (!copy_to_user(static_ptr_cast<int*>(value), &errno))
|
|
return EFAULT;
|
|
size = sizeof(int);
|
|
if (!copy_to_user(value_size, &size))
|
|
return EFAULT;
|
|
return KSuccess;
|
|
}
|
|
case SO_BINDTODEVICE:
|
|
if (size < IFNAMSIZ)
|
|
return EINVAL;
|
|
if (m_bound_interface) {
|
|
const auto& name = m_bound_interface->name();
|
|
auto length = name.length() + 1;
|
|
if (!copy_to_user(static_ptr_cast<char*>(value), name.characters(), length))
|
|
return EFAULT;
|
|
size = length;
|
|
if (!copy_to_user(value_size, &size))
|
|
return EFAULT;
|
|
return KSuccess;
|
|
} else {
|
|
size = 0;
|
|
if (!copy_to_user(value_size, &size))
|
|
return EFAULT;
|
|
|
|
return EFAULT;
|
|
}
|
|
case SO_TIMESTAMP:
|
|
if (size < sizeof(int))
|
|
return EINVAL;
|
|
if (!copy_to_user(static_ptr_cast<int*>(value), &m_timestamp))
|
|
return EFAULT;
|
|
size = sizeof(int);
|
|
if (!copy_to_user(value_size, &size))
|
|
return EFAULT;
|
|
return KSuccess;
|
|
default:
|
|
dbgln("setsockopt({}) at SOL_SOCKET not implemented.", option);
|
|
return ENOPROTOOPT;
|
|
}
|
|
}
|
|
|
|
KResultOr<size_t> Socket::read(FileDescription& description, u64, UserOrKernelBuffer& buffer, size_t size)
|
|
{
|
|
if (is_shut_down_for_reading())
|
|
return 0;
|
|
Time t {};
|
|
return recvfrom(description, buffer, size, 0, {}, 0, t);
|
|
}
|
|
|
|
KResultOr<size_t> Socket::write(FileDescription& description, u64, const UserOrKernelBuffer& data, size_t size)
|
|
{
|
|
if (is_shut_down_for_writing())
|
|
return EPIPE;
|
|
return sendto(description, data, size, 0, {}, 0);
|
|
}
|
|
|
|
KResult Socket::shutdown(int how)
|
|
{
|
|
Locker locker(lock());
|
|
if (type() == SOCK_STREAM && !is_connected())
|
|
return ENOTCONN;
|
|
if (m_role == Role::Listener)
|
|
return ENOTCONN;
|
|
if (!m_shut_down_for_writing && (how & SHUT_WR))
|
|
shut_down_for_writing();
|
|
if (!m_shut_down_for_reading && (how & SHUT_RD))
|
|
shut_down_for_reading();
|
|
m_shut_down_for_reading |= (how & SHUT_RD) != 0;
|
|
m_shut_down_for_writing |= (how & SHUT_WR) != 0;
|
|
return KSuccess;
|
|
}
|
|
|
|
KResult Socket::stat(::stat& st) const
|
|
{
|
|
memset(&st, 0, sizeof(st));
|
|
st.st_mode = S_IFSOCK;
|
|
return KSuccess;
|
|
}
|
|
|
|
void Socket::set_connected(bool connected)
|
|
{
|
|
Locker locker(lock());
|
|
if (m_connected == connected)
|
|
return;
|
|
m_connected = connected;
|
|
evaluate_block_conditions();
|
|
}
|
|
|
|
}
|