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#include <AK/StringBuilder.h>
#include <Kernel/FileSystem/FileDescription.h>
#include <Kernel/Net/IPv4Socket.h>
#include <Kernel/Net/LocalSocket.h>
#include <Kernel/Net/Socket.h>
#include <Kernel/Process.h>
#include <Kernel/UnixTypes.h>
#include <LibC/errno_numbers.h>
//#define SOCKET_DEBUG
KResultOr<NonnullRefPtr<Socket>> Socket::create(int domain, int type, int protocol)
{
(void)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 KResult(-EAFNOSUPPORT);
}
}
Socket::Socket(int domain, int type, int protocol)
: m_domain(domain)
, m_type(type)
, m_protocol(protocol)
{
auto& process = current->process();
m_origin = { process.pid(), process.uid(), process.gid() };
}
Socket::~Socket()
{
}
void Socket::set_setup_state(SetupState new_setup_state)
{
#ifdef SOCKET_DEBUG
kprintf("%s(%u) Socket{%p} setup state moving from %s to %s\n", current->process().name().characters(), current->pid(), this, to_string(m_setup_state), to_string(new_setup_state));
#endif
m_setup_state = new_setup_state;
}
RefPtr<Socket> Socket::accept()
{
LOCKER(m_lock);
if (m_pending.is_empty())
return nullptr;
#ifdef SOCKET_DEBUG
kprintf("%s(%u) Socket{%p} de-queueing connection\n", current->process().name().characters(), current->pid(), this);
#endif
auto client = m_pending.take_first();
ASSERT(!client->is_connected());
auto& process = current->process();
client->m_acceptor = { process.pid(), process.uid(), process.gid() };
client->m_connected = true;
client->m_role = Role::Accepted;
return client;
}
KResult Socket::queue_connection_from(NonnullRefPtr<Socket> peer)
{
#ifdef SOCKET_DEBUG
kprintf("%s(%u) Socket{%p} queueing connection\n", current->process().name().characters(), current->pid(), this);
#endif
LOCKER(m_lock);
if (m_pending.size() >= m_backlog)
return KResult(-ECONNREFUSED);
m_pending.append(peer);
return KSuccess;
}
KResult Socket::setsockopt(int level, int option, const void* value, socklen_t value_size)
{
ASSERT(level == SOL_SOCKET);
switch (option) {
case SO_SNDTIMEO:
if (value_size != sizeof(timeval))
return KResult(-EINVAL);
m_send_timeout = *(const timeval*)value;
return KSuccess;
case SO_RCVTIMEO:
if (value_size != sizeof(timeval))
return KResult(-EINVAL);
m_receive_timeout = *(const timeval*)value;
return KSuccess;
default:
kprintf("%s(%u): setsockopt() at SOL_SOCKET with unimplemented option %d\n", current->process().name().characters(), current->process().pid(), option);
return KResult(-ENOPROTOOPT);
}
}
KResult Socket::getsockopt(FileDescription&, int level, int option, void* value, socklen_t* value_size)
{
ASSERT(level == SOL_SOCKET);
switch (option) {
case SO_SNDTIMEO:
if (*value_size < sizeof(timeval))
return KResult(-EINVAL);
*(timeval*)value = m_send_timeout;
*value_size = sizeof(timeval);
return KSuccess;
case SO_RCVTIMEO:
if (*value_size < sizeof(timeval))
return KResult(-EINVAL);
*(timeval*)value = m_receive_timeout;
*value_size = sizeof(timeval);
return KSuccess;
case SO_ERROR:
if (*value_size < sizeof(int))
return KResult(-EINVAL);
kprintf("%s(%u): getsockopt() SO_ERROR: WARNING! I have no idea what the real error is, so I'll just stick my fingers in my ears and pretend there is none! %d\n", current->process().name().characters(), option);
*(int*)value = 0;
*value_size = sizeof(int);
return KSuccess;
default:
kprintf("%s(%u): getsockopt() at SOL_SOCKET with unimplemented option %d\n", current->process().name().characters(), option);
return KResult(-ENOPROTOOPT);
}
}
void Socket::load_receive_deadline()
{
kgettimeofday(m_receive_deadline);
m_receive_deadline.tv_sec += m_receive_timeout.tv_sec;
m_receive_deadline.tv_usec += m_receive_timeout.tv_usec;
m_receive_deadline.tv_sec += (m_send_timeout.tv_usec / 1000000) * 1;
m_receive_deadline.tv_usec %= 1000000;
}
void Socket::load_send_deadline()
{
kgettimeofday(m_send_deadline);
m_send_deadline.tv_sec += m_send_timeout.tv_sec;
m_send_deadline.tv_usec += m_send_timeout.tv_usec;
m_send_deadline.tv_sec += (m_send_timeout.tv_usec / 1000000) * 1;
m_send_deadline.tv_usec %= 1000000;
}
String Socket::absolute_path(const FileDescription& description) const
{
StringBuilder builder;
builder.appendf("socket:%x", this);
switch (role(description)) {
case Role::None:
break;
case Role::Listener:
builder.append(" (listening)");
break;
case Role::Accepted:
builder.append(" (accepted)");
break;
case Role::Connected:
builder.append(" (connected)");
break;
case Role::Connecting:
builder.append(" (connecting)");
break;
}
return builder.to_string();
}
ssize_t Socket::read(FileDescription& description, u8* buffer, ssize_t size)
{
return recvfrom(description, buffer, size, 0, nullptr, 0);
}
ssize_t Socket::write(FileDescription& description, const u8* data, ssize_t size)
{
return sendto(description, data, size, 0, nullptr, 0);
}
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