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socket.rs
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2513 lines (2307 loc) · 82.3 KB
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use crate::vm::{PyObjectRef, VirtualMachine};
#[cfg(feature = "ssl")]
pub(super) use _socket::{sock_select, timeout_error_msg, PySocket, SelectKind};
pub fn make_module(vm: &VirtualMachine) -> PyObjectRef {
#[cfg(windows)]
crate::vm::stdlib::nt::init_winsock();
_socket::make_module(vm)
}
#[pymodule]
mod _socket {
use crate::common::lock::{PyMappedRwLockReadGuard, PyRwLock, PyRwLockReadGuard};
use crate::vm::{
builtins::{PyBaseExceptionRef, PyListRef, PyStrRef, PyTupleRef, PyTypeRef},
convert::{IntoPyException, ToPyObject, TryFromBorrowedObject, TryFromObject},
function::{ArgBytesLike, ArgMemoryBuffer, Either, OptionalArg, OptionalOption},
types::{DefaultConstructor, Initializer},
utils::ToCString,
AsObject, PyObjectRef, PyPayload, PyRef, PyResult, VirtualMachine,
};
use crossbeam_utils::atomic::AtomicCell;
use num_traits::ToPrimitive;
use socket2::{Domain, Protocol, Socket, Type as SocketType};
use std::{
ffi,
io::{self, Read, Write},
mem::MaybeUninit,
net::{self, Ipv4Addr, Ipv6Addr, Shutdown, SocketAddr, ToSocketAddrs},
time::{Duration, Instant},
};
#[cfg(unix)]
use libc as c;
#[cfg(windows)]
mod c {
pub use winapi::shared::ifdef::IF_MAX_STRING_SIZE as IF_NAMESIZE;
pub use winapi::shared::mstcpip::*;
pub use winapi::shared::netioapi::{if_indextoname, if_nametoindex};
pub use winapi::shared::ws2def::*;
pub use winapi::shared::ws2ipdef::*;
pub use winapi::um::winsock2::{
IPPORT_RESERVED, SD_BOTH as SHUT_RDWR, SD_RECEIVE as SHUT_RD, SD_SEND as SHUT_WR,
SOCK_DGRAM, SOCK_RAW, SOCK_RDM, SOCK_SEQPACKET, SOCK_STREAM, SOL_SOCKET, SO_BROADCAST,
SO_ERROR, SO_EXCLUSIVEADDRUSE, SO_LINGER, SO_OOBINLINE, SO_REUSEADDR, SO_TYPE,
SO_USELOOPBACK, *,
};
pub use winapi::um::ws2tcpip::*;
}
// constants
#[pyattr(name = "has_ipv6")]
const HAS_IPV6: bool = true;
#[pyattr]
// put IPPROTO_MAX later
use c::{
AF_DECnet, AF_APPLETALK, AF_INET, AF_INET6, AF_IPX, AF_UNSPEC, INADDR_ANY, INADDR_LOOPBACK,
INADDR_NONE, IPPROTO_AH, IPPROTO_DSTOPTS, IPPROTO_EGP, IPPROTO_ESP, IPPROTO_FRAGMENT,
IPPROTO_HOPOPTS, IPPROTO_ICMP, IPPROTO_ICMPV6, IPPROTO_IDP, IPPROTO_IGMP, IPPROTO_IP,
IPPROTO_IP as IPPROTO_IPIP, IPPROTO_IPV6, IPPROTO_NONE, IPPROTO_PIM, IPPROTO_PUP,
IPPROTO_RAW, IPPROTO_ROUTING, IPPROTO_TCP, IPPROTO_TCP as SOL_TCP, IPPROTO_UDP, MSG_CTRUNC,
MSG_DONTROUTE, MSG_OOB, MSG_PEEK, MSG_TRUNC, MSG_WAITALL, NI_DGRAM, NI_MAXHOST,
NI_NAMEREQD, NI_NOFQDN, NI_NUMERICHOST, NI_NUMERICSERV, SHUT_RD, SHUT_RDWR, SHUT_WR,
SOCK_DGRAM, SOCK_STREAM, SOL_SOCKET, SO_BROADCAST, SO_ERROR, SO_LINGER, SO_OOBINLINE,
SO_REUSEADDR, SO_TYPE, TCP_NODELAY,
};
#[cfg(unix)]
#[pyattr]
use c::{AF_UNIX, SO_REUSEPORT};
#[pyattr]
use c::{AI_ADDRCONFIG, AI_NUMERICHOST, AI_NUMERICSERV, AI_PASSIVE};
#[cfg(not(target_os = "redox"))]
#[pyattr]
use c::{SOCK_RAW, SOCK_RDM, SOCK_SEQPACKET};
#[cfg(target_os = "android")]
#[pyattr]
use c::{SOL_ATALK, SOL_AX25, SOL_IPX, SOL_NETROM, SOL_ROSE};
#[cfg(target_os = "freebsd")]
#[pyattr]
use c::SO_SETFIB;
#[cfg(target_os = "linux")]
#[pyattr]
use c::{
CAN_BCM, CAN_EFF_FLAG, CAN_EFF_MASK, CAN_ERR_FLAG, CAN_ERR_MASK, CAN_ISOTP, CAN_J1939,
CAN_RAW, CAN_RAW_ERR_FILTER, CAN_RAW_FD_FRAMES, CAN_RAW_FILTER, CAN_RAW_JOIN_FILTERS,
CAN_RAW_LOOPBACK, CAN_RAW_RECV_OWN_MSGS, CAN_RTR_FLAG, CAN_SFF_MASK, IPPROTO_MPTCP,
J1939_IDLE_ADDR, J1939_MAX_UNICAST_ADDR, J1939_NLA_BYTES_ACKED, J1939_NLA_PAD,
J1939_NO_ADDR, J1939_NO_NAME, J1939_NO_PGN, J1939_PGN_ADDRESS_CLAIMED,
J1939_PGN_ADDRESS_COMMANDED, J1939_PGN_MAX, J1939_PGN_PDU1_MAX, J1939_PGN_REQUEST,
SCM_J1939_DEST_ADDR, SCM_J1939_DEST_NAME, SCM_J1939_ERRQUEUE, SCM_J1939_PRIO, SOL_CAN_BASE,
SOL_CAN_RAW, SO_J1939_ERRQUEUE, SO_J1939_FILTER, SO_J1939_PROMISC, SO_J1939_SEND_PRIO,
};
#[cfg(all(target_os = "linux", target_env = "gnu"))]
#[pyattr]
use c::SOL_RDS;
#[cfg(target_os = "netbsd")]
#[pyattr]
use c::IPPROTO_VRRP;
#[cfg(target_vendor = "apple")]
#[pyattr]
use c::{AF_SYSTEM, PF_SYSTEM, SYSPROTO_CONTROL, TCP_KEEPALIVE};
#[cfg(windows)]
#[pyattr]
use c::{
IPPORT_RESERVED, IPPROTO_IPV4, RCVALL_IPLEVEL, RCVALL_OFF, RCVALL_ON,
RCVALL_SOCKETLEVELONLY, SIO_KEEPALIVE_VALS, SIO_LOOPBACK_FAST_PATH, SIO_RCVALL,
SO_EXCLUSIVEADDRUSE,
};
#[cfg(not(windows))]
#[pyattr]
const IPPORT_RESERVED: i32 = 1024;
#[pyattr]
const IPPORT_USERRESERVED: i32 = 5000;
#[cfg(any(unix, target_os = "android"))]
#[pyattr]
use c::{
EAI_SYSTEM, MSG_EOR, SO_ACCEPTCONN, SO_DEBUG, SO_DONTROUTE, SO_KEEPALIVE, SO_RCVBUF,
SO_RCVLOWAT, SO_RCVTIMEO, SO_SNDBUF, SO_SNDLOWAT, SO_SNDTIMEO,
};
#[cfg(any(target_os = "android", target_os = "linux"))]
#[pyattr]
use c::{
ALG_OP_DECRYPT, ALG_OP_ENCRYPT, ALG_SET_AEAD_ASSOCLEN, ALG_SET_AEAD_AUTHSIZE, ALG_SET_IV,
ALG_SET_KEY, ALG_SET_OP, IPV6_DSTOPTS, IPV6_NEXTHOP, IPV6_PATHMTU, IPV6_RECVDSTOPTS,
IPV6_RECVHOPLIMIT, IPV6_RECVHOPOPTS, IPV6_RECVPATHMTU, IPV6_RTHDRDSTOPTS,
IP_DEFAULT_MULTICAST_LOOP, IP_RECVOPTS, IP_RETOPTS, NETLINK_CRYPTO, NETLINK_DNRTMSG,
NETLINK_FIREWALL, NETLINK_IP6_FW, NETLINK_NFLOG, NETLINK_ROUTE, NETLINK_USERSOCK,
NETLINK_XFRM, SOL_ALG, SO_PASSSEC, SO_PEERSEC,
};
#[cfg(any(target_os = "android", target_vendor = "apple"))]
#[pyattr]
use c::{AI_DEFAULT, AI_MASK, AI_V4MAPPED_CFG};
#[cfg(any(target_os = "freebsd", target_os = "netbsd"))]
#[pyattr]
use c::MSG_NOTIFICATION;
#[cfg(any(target_os = "fuchsia", target_os = "linux"))]
#[pyattr]
use c::TCP_USER_TIMEOUT;
#[cfg(any(unix, target_os = "android", windows))]
#[pyattr]
use c::{
INADDR_BROADCAST, IPV6_MULTICAST_HOPS, IPV6_MULTICAST_IF, IPV6_MULTICAST_LOOP,
IPV6_UNICAST_HOPS, IPV6_V6ONLY, IP_ADD_MEMBERSHIP, IP_DROP_MEMBERSHIP, IP_MULTICAST_IF,
IP_MULTICAST_LOOP, IP_MULTICAST_TTL, IP_TTL,
};
#[cfg(any(unix, target_os = "android", windows))]
#[pyattr]
const INADDR_UNSPEC_GROUP: u32 = 0xe0000000;
#[cfg(any(unix, target_os = "android", windows))]
#[pyattr]
const INADDR_ALLHOSTS_GROUP: u32 = 0xe0000001;
#[cfg(any(unix, target_os = "android", windows))]
#[pyattr]
const INADDR_MAX_LOCAL_GROUP: u32 = 0xe00000ff;
#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
#[pyattr]
use c::{
AF_ALG, AF_ASH, AF_ATMPVC, AF_ATMSVC, AF_AX25, AF_BRIDGE, AF_CAN, AF_ECONET, AF_IRDA,
AF_LLC, AF_NETBEUI, AF_NETLINK, AF_NETROM, AF_PACKET, AF_PPPOX, AF_RDS, AF_SECURITY,
AF_TIPC, AF_VSOCK, AF_WANPIPE, AF_X25, IP_TRANSPARENT, MSG_CONFIRM, MSG_ERRQUEUE,
MSG_FASTOPEN, MSG_MORE, PF_CAN, PF_PACKET, PF_RDS, SCM_CREDENTIALS, SOL_IP, SOL_TIPC,
SOL_UDP, SO_BINDTODEVICE, SO_MARK, TCP_CORK, TCP_DEFER_ACCEPT, TCP_LINGER2, TCP_QUICKACK,
TCP_SYNCNT, TCP_WINDOW_CLAMP,
};
// gated on presence of AF_VSOCK:
#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
#[pyattr]
const SO_VM_SOCKETS_BUFFER_SIZE: u32 = 0;
// gated on presence of AF_VSOCK:
#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
#[pyattr]
const SO_VM_SOCKETS_BUFFER_MIN_SIZE: u32 = 1;
// gated on presence of AF_VSOCK:
#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
#[pyattr]
const SO_VM_SOCKETS_BUFFER_MAX_SIZE: u32 = 2;
// gated on presence of AF_VSOCK:
#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
#[pyattr]
const VMADDR_CID_ANY: u32 = 0xffffffff; // 0xffffffff
// gated on presence of AF_VSOCK:
#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
#[pyattr]
const VMADDR_PORT_ANY: u32 = 0xffffffff; // 0xffffffff
// gated on presence of AF_VSOCK:
#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
#[pyattr]
const VMADDR_CID_HOST: u32 = 2;
// gated on presence of AF_VSOCK:
#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
#[pyattr]
const VM_SOCKETS_INVALID_VERSION: u32 = 0xffffffff; // 0xffffffff
// TODO: gated on https://github.com/rust-lang/libc/pull/1662
// // gated on presence of AF_VSOCK:
// #[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
// #[pyattr(name = "IOCTL_VM_SOCKETS_GET_LOCAL_CID", once)]
// fn ioctl_vm_sockets_get_local_cid(_vm: &VirtualMachine) -> i32 {
// c::_IO(7, 0xb9)
// }
#[cfg(not(any(target_os = "android", target_os = "fuchsia", target_os = "linux")))]
#[pyattr]
const SOL_IP: i32 = 0;
#[cfg(not(any(target_os = "android", target_os = "fuchsia", target_os = "linux")))]
#[pyattr]
const SOL_UDP: i32 = 17;
#[cfg(any(target_os = "android", target_os = "linux", windows))]
#[pyattr]
use c::{IPV6_HOPOPTS, IPV6_RECVRTHDR, IPV6_RTHDR, IP_OPTIONS};
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_vendor = "apple"
))]
#[pyattr]
use c::{IPPROTO_HELLO, IPPROTO_XTP, LOCAL_PEERCRED, MSG_EOF};
#[cfg(any(target_os = "netbsd", target_os = "openbsd", windows))]
#[pyattr]
use c::{MSG_BCAST, MSG_MCAST};
#[cfg(any(
target_os = "android",
target_os = "fuchsia",
target_os = "freebsd",
target_os = "linux"
))]
#[pyattr]
use c::{IPPROTO_UDPLITE, TCP_CONGESTION};
#[cfg(any(
target_os = "android",
target_os = "fuchsia",
target_os = "freebsd",
target_os = "linux"
))]
#[pyattr]
const UDPLITE_SEND_CSCOV: i32 = 10;
#[cfg(any(
target_os = "android",
target_os = "fuchsia",
target_os = "freebsd",
target_os = "linux"
))]
#[pyattr]
const UDPLITE_RECV_CSCOV: i32 = 11;
#[cfg(any(
target_os = "android",
target_os = "fuchsia",
target_os = "linux",
target_os = "openbsd"
))]
#[pyattr]
use c::AF_KEY;
#[cfg(any(
target_os = "android",
target_os = "fuchsia",
target_os = "linux",
target_os = "redox"
))]
#[pyattr]
use c::SO_DOMAIN;
#[cfg(any(
target_os = "android",
target_os = "fuchsia",
all(
target_os = "linux",
any(
target_arch = "aarch64",
target_arch = "i686",
target_arch = "mips",
target_arch = "powerpc",
target_arch = "powerpc64",
target_arch = "powerpc64le",
target_arch = "riscv64gc",
target_arch = "s390x",
target_arch = "x86_64"
)
),
target_os = "redox"
))]
#[pyattr]
use c::SO_PRIORITY;
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "netbsd",
target_os = "openbsd"
))]
#[pyattr]
use c::IPPROTO_MOBILE;
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "netbsd",
target_vendor = "apple"
))]
#[pyattr]
use c::SCM_CREDS;
#[cfg(any(
target_os = "freebsd",
target_os = "fuchsia",
target_os = "linux",
target_vendor = "apple"
))]
#[pyattr]
use c::TCP_FASTOPEN;
#[cfg(any(
target_os = "android",
target_os = "freebsd",
target_os = "fuchsia",
all(
target_os = "linux",
any(
target_arch = "aarch64",
target_arch = "i686",
target_arch = "mips",
target_arch = "powerpc",
target_arch = "powerpc64",
target_arch = "powerpc64le",
target_arch = "riscv64gc",
target_arch = "s390x",
target_arch = "x86_64"
)
),
target_os = "redox"
))]
#[pyattr]
use c::SO_PROTOCOL;
#[cfg(any(
target_os = "android",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "linux",
windows
))]
#[pyattr]
use c::IPV6_DONTFRAG;
#[cfg(any(
target_os = "android",
target_os = "dragonfly",
target_os = "fuchsia",
target_os = "linux",
target_os = "redox"
))]
#[pyattr]
use c::{SO_PASSCRED, SO_PEERCRED};
#[cfg(any(
target_os = "android",
target_os = "freebsd",
target_os = "fuchsia",
target_os = "linux",
target_os = "netbsd"
))]
#[pyattr]
use c::TCP_INFO;
#[cfg(any(
target_os = "android",
target_os = "freebsd",
target_os = "fuchsia",
target_os = "linux",
target_vendor = "apple"
))]
#[pyattr]
use c::IP_RECVTOS;
#[cfg(any(
target_os = "android",
target_os = "netbsd",
target_os = "redox",
target_vendor = "apple",
windows
))]
#[pyattr]
use c::NI_MAXSERV;
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "netbsd",
target_os = "openbsd",
target_vendor = "apple"
))]
#[pyattr]
use c::{IPPROTO_EON, IPPROTO_IPCOMP};
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "netbsd",
target_vendor = "apple",
windows
))]
#[pyattr]
use c::IPPROTO_ND;
#[cfg(any(
target_os = "android",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "linux",
target_vendor = "apple",
windows
))]
#[pyattr]
use c::{IPV6_CHECKSUM, IPV6_HOPLIMIT};
#[cfg(any(
target_os = "android",
target_os = "freebsd",
target_os = "fuchsia",
target_os = "linux",
target_os = "netbsd"
))]
#[pyattr]
use c::IPPROTO_SCTP; // also in windows
#[cfg(any(
target_os = "android",
target_os = "freebsd",
target_os = "fuchsia",
target_os = "linux",
target_vendor = "apple",
windows
))]
#[pyattr]
use c::{AI_ALL, AI_V4MAPPED};
#[cfg(any(
target_os = "android",
target_os = "linux",
target_os = "netbsd",
target_os = "openbsd",
target_vendor = "apple",
windows
))]
#[pyattr]
use c::EAI_NODATA;
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "netbsd",
target_os = "openbsd",
target_vendor = "apple",
windows
))]
#[pyattr]
use c::{
AF_LINK, IPPROTO_GGP, IPV6_JOIN_GROUP, IPV6_LEAVE_GROUP, IP_RECVDSTADDR, SO_USELOOPBACK,
};
#[cfg(any(
target_os = "android",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "fuchsia",
target_os = "linux",
target_os = "netbsd",
target_os = "openbsd"
))]
#[pyattr]
use c::{MSG_CMSG_CLOEXEC, MSG_NOSIGNAL};
#[cfg(any(
target_os = "android",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "fuchsia",
target_os = "linux",
target_os = "netbsd",
target_os = "redox"
))]
#[pyattr]
use c::TCP_KEEPIDLE;
#[cfg(any(
target_os = "android",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "fuchsia",
target_os = "linux",
target_os = "netbsd",
target_vendor = "apple"
))]
#[pyattr]
use c::{TCP_KEEPCNT, TCP_KEEPINTVL};
#[cfg(any(
target_os = "android",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "fuchsia",
target_os = "linux",
target_os = "netbsd",
target_os = "openbsd",
target_os = "redox"
))]
#[pyattr]
use c::{SOCK_CLOEXEC, SOCK_NONBLOCK};
#[cfg(any(
target_os = "android",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "fuchsia",
target_os = "linux",
target_os = "netbsd",
target_os = "openbsd",
target_vendor = "apple"
))]
#[pyattr]
use c::{
AF_ROUTE, AF_SNA, EAI_OVERFLOW, IPPROTO_GRE, IPPROTO_RSVP, IPPROTO_TP, IPV6_RECVPKTINFO,
MSG_DONTWAIT, SCM_RIGHTS, TCP_MAXSEG,
};
#[cfg(any(
target_os = "android",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "linux",
target_os = "netbsd",
target_os = "openbsd",
target_vendor = "apple",
windows
))]
#[pyattr]
use c::IPV6_PKTINFO;
#[cfg(any(
target_os = "android",
target_os = "freebsd",
target_os = "fuchsia",
target_os = "linux",
target_os = "netbsd",
target_os = "openbsd",
target_vendor = "apple",
windows
))]
#[pyattr]
use c::AI_CANONNAME;
#[cfg(any(
target_os = "android",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "fuchsia",
target_os = "linux",
target_os = "netbsd",
target_os = "openbsd",
target_vendor = "apple",
windows
))]
#[pyattr]
use c::{
EAI_AGAIN, EAI_BADFLAGS, EAI_FAIL, EAI_FAMILY, EAI_MEMORY, EAI_NONAME, EAI_SERVICE,
EAI_SOCKTYPE, IPV6_RECVTCLASS, IPV6_TCLASS, IP_HDRINCL, IP_TOS, SOMAXCONN,
};
#[cfg(not(any(
target_os = "android",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "fuchsia",
target_os = "linux",
target_os = "netbsd",
target_os = "openbsd",
target_vendor = "apple",
windows
)))]
#[pyattr]
const SOMAXCONN: i32 = 5; // Common value
// HERE IS WHERE THE BLUETOOTH CONSTANTS START
// TODO: there should be a more intelligent way of detecting bluetooth on a platform.
// CPython uses header-detection, but blocks NetBSD and DragonFly BSD
#[cfg(any(
target_os = "android",
target_os = "freebsd",
target_os = "fuchsia",
target_os = "linux",
target_os = "openbsd"
))]
#[pyattr]
use c::AF_BLUETOOTH;
#[cfg(any(
target_os = "android",
target_os = "freebsd",
target_os = "fuchsia",
target_os = "linux",
target_os = "openbsd"
))]
#[pyattr]
const BDADDR_ANY: &str = "00:00:00:00:00:00";
#[cfg(any(
target_os = "android",
target_os = "freebsd",
target_os = "fuchsia",
target_os = "linux",
target_os = "openbsd"
))]
#[pyattr]
const BDADDR_LOCAL: &str = "00:00:00:FF:FF:FF";
// HERE IS WHERE THE BLUETOOTH CONSTANTS END
#[cfg(windows)]
#[pyattr]
use winapi::shared::ws2def::{
IPPROTO_CBT, IPPROTO_ICLFXBM, IPPROTO_IGP, IPPROTO_L2TP, IPPROTO_PGM, IPPROTO_RDP,
IPPROTO_SCTP, IPPROTO_ST,
};
#[pyattr]
fn error(vm: &VirtualMachine) -> PyTypeRef {
vm.ctx.exceptions.os_error.to_owned()
}
#[pyattr(once)]
fn timeout(vm: &VirtualMachine) -> PyTypeRef {
vm.ctx.new_exception_type(
"socket",
"timeout",
Some(vec![vm.ctx.exceptions.os_error.to_owned()]),
)
}
#[pyattr(once)]
fn herror(vm: &VirtualMachine) -> PyTypeRef {
vm.ctx.new_exception_type(
"socket",
"herror",
Some(vec![vm.ctx.exceptions.os_error.to_owned()]),
)
}
#[pyattr(once)]
fn gaierror(vm: &VirtualMachine) -> PyTypeRef {
vm.ctx.new_exception_type(
"socket",
"gaierror",
Some(vec![vm.ctx.exceptions.os_error.to_owned()]),
)
}
#[pyfunction]
fn htonl(x: u32) -> u32 {
u32::to_be(x)
}
#[pyfunction]
fn htons(x: u16) -> u16 {
u16::to_be(x)
}
#[pyfunction]
fn ntohl(x: u32) -> u32 {
u32::from_be(x)
}
#[pyfunction]
fn ntohs(x: u16) -> u16 {
u16::from_be(x)
}
#[cfg(unix)]
type RawSocket = std::os::unix::io::RawFd;
#[cfg(windows)]
type RawSocket = std::os::windows::raw::SOCKET;
#[cfg(unix)]
macro_rules! errcode {
($e:ident) => {
c::$e
};
}
#[cfg(windows)]
macro_rules! errcode {
($e:ident) => {
paste::paste!(c::[<WSA $e>])
};
}
#[cfg(windows)]
use winapi::shared::netioapi;
fn get_raw_sock(obj: PyObjectRef, vm: &VirtualMachine) -> PyResult<RawSocket> {
#[cfg(unix)]
type CastFrom = libc::c_long;
#[cfg(windows)]
type CastFrom = libc::c_longlong;
// should really just be to_index() but test_socket tests the error messages explicitly
if obj.fast_isinstance(vm.ctx.types.float_type) {
return Err(vm.new_type_error("integer argument expected, got float".to_owned()));
}
let int = vm
.to_index_opt(obj)
.unwrap_or_else(|| Err(vm.new_type_error("an integer is required".to_owned())))?;
int.try_to_primitive::<CastFrom>(vm)
.map(|sock| sock as RawSocket)
}
#[cfg(unix)]
mod nullable_socket {
use super::*;
use std::os::unix::io::AsRawFd;
#[derive(Debug)]
#[repr(transparent)]
pub struct NullableSocket(Option<socket2::Socket>);
impl From<socket2::Socket> for NullableSocket {
fn from(sock: socket2::Socket) -> Self {
NullableSocket(Some(sock))
}
}
impl NullableSocket {
pub fn invalid() -> Self {
Self(None)
}
pub fn get(&self) -> Option<&socket2::Socket> {
self.0.as_ref()
}
pub fn fd(&self) -> RawSocket {
self.get().map_or(INVALID_SOCKET, |sock| sock.as_raw_fd())
}
pub fn insert(&mut self, sock: socket2::Socket) -> &mut socket2::Socket {
self.0.insert(sock)
}
}
}
#[cfg(windows)]
mod nullable_socket {
use super::*;
use std::os::windows::io::{AsRawSocket, FromRawSocket};
// TODO: may change if windows changes its TcpStream repr
#[derive(Debug)]
#[repr(transparent)]
pub struct NullableSocket(socket2::Socket);
impl From<socket2::Socket> for NullableSocket {
fn from(sock: socket2::Socket) -> Self {
NullableSocket(sock)
}
}
impl NullableSocket {
pub fn invalid() -> Self {
// TODO: may become UB in the future; maybe see rust-lang/rust#74699
Self(unsafe { socket2::Socket::from_raw_socket(INVALID_SOCKET) })
}
pub fn get(&self) -> Option<&socket2::Socket> {
(self.0.as_raw_socket() != INVALID_SOCKET).then(|| &self.0)
}
pub fn fd(&self) -> RawSocket {
self.0.as_raw_socket()
}
pub fn insert(&mut self, sock: socket2::Socket) -> &mut socket2::Socket {
self.0 = sock;
&mut self.0
}
}
}
use nullable_socket::NullableSocket;
impl Default for NullableSocket {
fn default() -> Self {
Self::invalid()
}
}
#[pyattr(name = "socket")]
#[pyattr(name = "SocketType")]
#[pyclass(name = "socket")]
#[derive(Debug, PyPayload)]
pub struct PySocket {
kind: AtomicCell<i32>,
family: AtomicCell<i32>,
proto: AtomicCell<i32>,
pub(crate) timeout: AtomicCell<f64>,
sock: PyRwLock<NullableSocket>,
}
impl Default for PySocket {
fn default() -> Self {
PySocket {
kind: AtomicCell::default(),
family: AtomicCell::default(),
proto: AtomicCell::default(),
timeout: AtomicCell::new(-1.0),
sock: PyRwLock::new(NullableSocket::invalid()),
}
}
}
#[cfg(windows)]
const CLOSED_ERR: i32 = c::WSAENOTSOCK;
#[cfg(unix)]
const CLOSED_ERR: i32 = c::EBADF;
impl Read for &PySocket {
fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
(&mut &*self.sock()?).read(buf)
}
}
impl Write for &PySocket {
fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> {
(&mut &*self.sock()?).write(buf)
}
fn flush(&mut self) -> std::io::Result<()> {
(&mut &*self.sock()?).flush()
}
}
impl PySocket {
pub fn sock_opt(&self) -> Option<PyMappedRwLockReadGuard<'_, Socket>> {
PyRwLockReadGuard::try_map(self.sock.read(), |sock| sock.get()).ok()
}
pub fn sock(&self) -> io::Result<PyMappedRwLockReadGuard<'_, Socket>> {
self.sock_opt()
.ok_or_else(|| io::Error::from_raw_os_error(CLOSED_ERR))
}
fn init_inner(
&self,
family: i32,
socket_kind: i32,
proto: i32,
sock: Socket,
) -> io::Result<()> {
self.family.store(family);
self.kind.store(socket_kind);
self.proto.store(proto);
let mut s = self.sock.write();
let sock = s.insert(sock);
let timeout = DEFAULT_TIMEOUT.load();
self.timeout.store(timeout);
if timeout >= 0.0 {
sock.set_nonblocking(true)?;
}
Ok(())
}
5C91
/// returns Err(blocking)
pub fn get_timeout(&self) -> Result<Duration, bool> {
let timeout = self.timeout.load();
if timeout > 0.0 {
Ok(Duration::from_secs_f64(timeout))
} else {
Err(timeout != 0.0)
}
}
fn sock_op<F, R>(
&self,
vm: &VirtualMachine,
select: SelectKind,
f: F,
) -> Result<R, IoOrPyException>
where
F: FnMut() -> io::Result<R>,
{
self.sock_op_timeout_err(vm, select, self.get_timeout().ok(), f)
}
fn sock_op_timeout_err<F, R>(
&self,
vm: &VirtualMachine,
select: SelectKind,
timeout: Option<Duration>,
mut f: F,
) -> Result<R, IoOrPyException>
where
F: FnMut() -> io::Result<R>,
{
let deadline = timeout.map(Deadline::new);
loop {
if deadline.is_some() || matches!(select, SelectKind::Connect) {
let interval = deadline.as_ref().map(|d| d.time_until()).transpose()?;
let res = sock_select(&*self.sock()?, select, interval);
match res {
Ok(true) => return Err(IoOrPyException::Timeout),
Err(e) if e.kind() == io::ErrorKind::Interrupted => {
vm.check_signals()?;
continue;
}
Err(e) => return Err(e.into()),
Ok(false) => {} // no timeout, continue as normal
}
}
let err = loop {
// loop on interrupt
match f() {
Ok(x) => return Ok(x),
Err(e) if e.kind() == io::ErrorKind::Interrupted => vm.check_signals()?,
Err(e) => break e,
}
};
if timeout.is_some() && err.kind() == io::ErrorKind::WouldBlock {
continue;
}
return Err(err.into());
}
}
fn extract_address(
&self,
addr: PyObjectRef,
caller: &str,
vm: &VirtualMachine,
) -> Result<socket2::SockAddr, IoOrPyException> {
let family = self.family.load();
match family {
#[cfg(unix)]
c::AF_UNIX => {
use std::os::unix::ffi::OsStrExt;
let buf = crate::vm::function::ArgStrOrBytesLike::try_from_object(vm, addr)?;
let path = &*buf.borrow_bytes();
if cfg!(any(target_os = "linux", target_os = "android"))
&& path.first() == Some(&0)
{
use libc::{sa_family_t, socklen_t};
use {socket2::SockAddr, std::ptr};
unsafe {
// based on SockAddr::unix
// TODO: upstream or fix socklen check for SockAddr::unix()?
SockAddr::init(|storage, len| {
// Safety: `SockAddr::init` zeros the address, which is a valid
// representation.
let storage: &mut libc::sockaddr_un = &mut *storage.cast();
let len: &mut socklen_t = &mut *len;
let bytes = path;
if bytes.len() > storage.sun_path.len() {
return Err(io::Error::new(
io::ErrorKind::InvalidInput,
"path must be shorter than SUN_LEN",
));
}
storage.sun_family = libc::AF_UNIX as sa_family_t;
// Safety: `bytes` and `addr.sun_path` are not overlapping and
// both point to valid memory.
// `SockAddr::init` zeroes the memory, so the path is already
// null terminated.
ptr::copy_nonoverlapping(
bytes.as_ptr(),
storage.sun_path.as_mut_ptr() as *mut u8,
bytes.len(),
);
let base = storage as *const _ as usize;
let path = &storage.sun_path as *const _ as usize;
let sun_path_offset = path - base;
let length = sun_path_offset + bytes.len();
*len = length as socklen_t;
Ok(())