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#include <Kernel/LocalSocket.h>
#include <Kernel/UnixTypes.h>
#include <Kernel/Process.h>
#include <Kernel/VirtualFileSystem.h>
#include <LibC/errno_numbers.h>
Retained<LocalSocket> LocalSocket::create(int type)
{
return adopt(*new LocalSocket(type));
}
LocalSocket::LocalSocket(int type)
: Socket(AF_LOCAL, type, 0)
{
kprintf("%s(%u) LocalSocket{%p} created with type=%u\n", current->name().characters(), current->pid(), this, type);
}
LocalSocket::~LocalSocket()
{
}
bool LocalSocket::get_address(sockaddr* address, socklen_t* address_size)
{
// FIXME: Look into what fallback behavior we should have here.
if (*address_size != sizeof(sockaddr_un))
return false;
memcpy(address, &m_address, sizeof(sockaddr_un));
*address_size = sizeof(sockaddr_un);
return true;
}
bool LocalSocket::bind(const sockaddr* address, socklen_t address_size, int& error)
{
ASSERT(!is_connected());
if (address_size != sizeof(sockaddr_un)) {
error = -EINVAL;
return false;
}
if (address->sa_family != AF_LOCAL) {
error = -EINVAL;
return false;
}
const sockaddr_un& local_address = *reinterpret_cast<const sockaddr_un*>(address);
char safe_address[sizeof(local_address.sun_path) + 1];
memcpy(safe_address, local_address.sun_path, sizeof(local_address.sun_path));
kprintf("%s(%u) LocalSocket{%p} bind(%s)\n", current->name().characters(), current->pid(), this, safe_address);
m_file = VFS::the().open(safe_address, error, O_CREAT | O_EXCL, S_IFSOCK | 0666, current->cwd_inode());
if (!m_file) {
if (error == -EEXIST)
error = -EADDRINUSE;
return false;
}
ASSERT(m_file->inode());
m_file->inode()->bind_socket(*this);
m_address = local_address;
m_bound = true;
return true;
}
bool LocalSocket::connect(const sockaddr* address, socklen_t address_size, int& error)
{
ASSERT(!m_bound);
if (address_size != sizeof(sockaddr_un)) {
error = -EINVAL;
return false;
}
if (address->sa_family != AF_LOCAL) {
error = -EINVAL;
return false;
}
const sockaddr_un& local_address = *reinterpret_cast<const sockaddr_un*>(address);
char safe_address[sizeof(local_address.sun_path) + 1];
memcpy(safe_address, local_address.sun_path, sizeof(local_address.sun_path));
kprintf("%s(%u) LocalSocket{%p} connect(%s)\n", current->name().characters(), current->pid(), this, safe_address);
m_file = VFS::the().open(safe_address, error, 0, 0, current->cwd_inode());
if (!m_file) {
error = -ECONNREFUSED;
return false;
}
ASSERT(m_file->inode());
if (!m_file->inode()->socket()) {
error = -ECONNREFUSED;
return false;
}
m_address = local_address;
auto peer = m_file->inode()->socket();
kprintf("Queueing up connection\n");
if (!peer->queue_connection_from(*this, error))
return false;
kprintf("Waiting for connect...\n");
if (!current->wait_for_connect(*this, error))
return false;
kprintf("CONNECTED!\n");
return true;
}
void LocalSocket::attach_fd(SocketRole role)
{
if (role == SocketRole::Accepted) {
++m_accepted_fds_open;
} else if (role == SocketRole::Connected) {
++m_connected_fds_open;
}
}
void LocalSocket::detach_fd(SocketRole role)
{
if (role == SocketRole::Accepted) {
ASSERT(m_accepted_fds_open);
--m_accepted_fds_open;
} else if (role == SocketRole::Connected) {
ASSERT(m_connected_fds_open);
--m_connected_fds_open;
}
}
bool LocalSocket::can_read(SocketRole role) const
{
if (role == SocketRole::Listener)
return can_accept();
if (role == SocketRole::Accepted)
return !m_connected_fds_open || !m_for_server.is_empty();
if (role == SocketRole::Connected)
return !m_accepted_fds_open || !m_for_client.is_empty();
ASSERT_NOT_REACHED();
}
ssize_t LocalSocket::read(SocketRole role, byte* buffer, ssize_t size)
{
if (role == SocketRole::Accepted)
return m_for_server.read(buffer, size);
if (role == SocketRole::Connected)
return m_for_client.read(buffer, size);
ASSERT_NOT_REACHED();
}
ssize_t LocalSocket::write(SocketRole role, const byte* data, ssize_t size)
{
if (role == SocketRole::Accepted) {
if (!m_accepted_fds_open)
return -EPIPE;
return m_for_client.write(data, size);
}
if (role == SocketRole::Connected) {
if (!m_connected_fds_open)
return -EPIPE;
return m_for_server.write(data, size);
}
ASSERT_NOT_REACHED();
}
bool LocalSocket::can_write(SocketRole role) const
{
if (role == SocketRole::Accepted)
return !m_connected_fds_open || m_for_client.bytes_in_write_buffer() < 4096;
if (role == SocketRole::Connected)
return !m_accepted_fds_open || m_for_server.bytes_in_write_buffer() < 4096;
ASSERT_NOT_REACHED();
}
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