| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #include "platform/globals.h" |
| #if defined(HOST_OS_MACOS) |
| |
| #include "bin/socket_base.h" |
| |
| #include <errno.h> // NOLINT |
| #include <ifaddrs.h> // NOLINT |
| #include <net/if.h> // NOLINT |
| #include <netinet/tcp.h> // NOLINT |
| #include <stdio.h> // NOLINT |
| #include <stdlib.h> // NOLINT |
| #include <string.h> // NOLINT |
| #include <sys/stat.h> // NOLINT |
| #include <unistd.h> // NOLINT |
| |
| #include "bin/fdutils.h" |
| #include "bin/file.h" |
| #include "bin/socket_base_macos.h" |
| #include "platform/signal_blocker.h" |
| |
| namespace dart { |
| namespace bin { |
| |
| SocketAddress::SocketAddress(struct sockaddr* sa, bool unnamed_unix_socket) { |
| if (unnamed_unix_socket) { |
| // This is an unnamed unix domain socket. |
| as_string_[0] = 0; |
| } else if (sa->sa_family == AF_UNIX) { |
| struct sockaddr_un* un = ((struct sockaddr_un*)sa); |
| memmove(as_string_, un->sun_path, sizeof(un->sun_path)); |
| } else { |
| ASSERT(INET6_ADDRSTRLEN >= INET_ADDRSTRLEN); |
| if (!SocketBase::FormatNumericAddress(*reinterpret_cast<RawAddr*>(sa), |
| as_string_, INET6_ADDRSTRLEN)) { |
| as_string_[0] = 0; |
| } |
| } |
| socklen_t salen = GetAddrLength(*reinterpret_cast<RawAddr*>(sa)); |
| memmove(reinterpret_cast<void*>(&addr_), sa, salen); |
| } |
| |
| bool SocketBase::Initialize() { |
| // Nothing to do on Mac OS. |
| return true; |
| } |
| |
| bool SocketBase::FormatNumericAddress(const RawAddr& addr, |
| char* address, |
| int len) { |
| socklen_t salen = SocketAddress::GetAddrLength(addr); |
| return (NO_RETRY_EXPECTED(getnameinfo(&addr.addr, salen, address, len, NULL, |
| 0, NI_NUMERICHOST)) == 0); |
| } |
| |
| bool SocketBase::IsBindError(intptr_t error_number) { |
| return error_number == EADDRINUSE || error_number == EADDRNOTAVAIL || |
| error_number == EINVAL; |
| } |
| |
| intptr_t SocketBase::Available(intptr_t fd) { |
| return FDUtils::AvailableBytes(fd); |
| } |
| |
| intptr_t SocketBase::Read(intptr_t fd, |
| void* buffer, |
| intptr_t num_bytes, |
| SocketOpKind sync) { |
| ASSERT(fd >= 0); |
| ssize_t read_bytes = TEMP_FAILURE_RETRY(read(fd, buffer, num_bytes)); |
| ASSERT(EAGAIN == EWOULDBLOCK); |
| if ((sync == kAsync) && (read_bytes == -1) && (errno == EWOULDBLOCK)) { |
| // If the read would block we need to retry and therefore return 0 |
| // as the number of bytes written. |
| read_bytes = 0; |
| } |
| return read_bytes; |
| } |
| |
| intptr_t SocketBase::RecvFrom(intptr_t fd, |
| void* buffer, |
| intptr_t num_bytes, |
| RawAddr* addr, |
| SocketOpKind sync) { |
| ASSERT(fd >= 0); |
| socklen_t addr_len = sizeof(addr->ss); |
| ssize_t read_bytes = TEMP_FAILURE_RETRY( |
| recvfrom(fd, buffer, num_bytes, 0, &addr->addr, &addr_len)); |
| if ((sync == kAsync) && (read_bytes == -1) && (errno == EWOULDBLOCK)) { |
| // If the read would block we need to retry and therefore return 0 |
| // as the number of bytes written. |
| read_bytes = 0; |
| } |
| return read_bytes; |
| } |
| |
| bool SocketBase::AvailableDatagram(intptr_t fd, |
| void* buffer, |
| intptr_t num_bytes) { |
| ASSERT(fd >= 0); |
| ssize_t read_bytes = |
| TEMP_FAILURE_RETRY(recvfrom(fd, buffer, num_bytes, MSG_PEEK, NULL, NULL)); |
| return read_bytes >= 0; |
| } |
| |
| intptr_t SocketBase::Write(intptr_t fd, |
| const void* buffer, |
| intptr_t num_bytes, |
| SocketOpKind sync) { |
| ASSERT(fd >= 0); |
| ssize_t written_bytes = TEMP_FAILURE_RETRY(write(fd, buffer, num_bytes)); |
| ASSERT(EAGAIN == EWOULDBLOCK); |
| if ((sync == kAsync) && (written_bytes == -1) && (errno == EWOULDBLOCK)) { |
| // If the would block we need to retry and therefore return 0 as |
| // the number of bytes written. |
| written_bytes = 0; |
| } |
| return written_bytes; |
| } |
| |
| intptr_t SocketBase::SendTo(intptr_t fd, |
| const void* buffer, |
| intptr_t num_bytes, |
| const RawAddr& addr, |
| SocketOpKind sync) { |
| ASSERT(fd >= 0); |
| ssize_t written_bytes = |
| TEMP_FAILURE_RETRY(sendto(fd, buffer, num_bytes, 0, &addr.addr, |
| SocketAddress::GetAddrLength(addr))); |
| ASSERT(EAGAIN == EWOULDBLOCK); |
| if ((sync == kAsync) && (written_bytes == -1) && (errno == EWOULDBLOCK)) { |
| // If the would block we need to retry and therefore return 0 as |
| // the number of bytes written. |
| written_bytes = 0; |
| } |
| return written_bytes; |
| } |
| |
| intptr_t SocketBase::GetPort(intptr_t fd) { |
| ASSERT(fd >= 0); |
| RawAddr raw; |
| socklen_t size = sizeof(raw); |
| if (NO_RETRY_EXPECTED(getsockname(fd, &raw.addr, &size))) { |
| return 0; |
| } |
| return SocketAddress::GetAddrPort(raw); |
| } |
| |
| SocketAddress* SocketBase::GetRemotePeer(intptr_t fd, intptr_t* port) { |
| ASSERT(fd >= 0); |
| RawAddr raw; |
| socklen_t size = sizeof(raw); |
| if (NO_RETRY_EXPECTED(getpeername(fd, &raw.addr, &size))) { |
| return NULL; |
| } |
| // sockaddr_un contains sa_family_t sun_familty and char[] sun_path. |
| // If size is the size of sa_familty_t, this is an unnamed socket and |
| // sun_path contains garbage. |
| if (size == sizeof(sa_family_t)) { |
| *port = 0; |
| return new SocketAddress(&raw.addr, true); |
| } |
| *port = SocketAddress::GetAddrPort(raw); |
| return new SocketAddress(&raw.addr); |
| } |
| |
| void SocketBase::GetError(intptr_t fd, OSError* os_error) { |
| int len = sizeof(errno); |
| getsockopt(fd, SOL_SOCKET, SO_ERROR, &errno, |
| reinterpret_cast<socklen_t*>(&len)); |
| os_error->SetCodeAndMessage(OSError::kSystem, errno); |
| } |
| |
| int SocketBase::GetType(intptr_t fd) { |
| struct stat buf; |
| int result = fstat(fd, &buf); |
| if (result == -1) { |
| return -1; |
| } |
| if (S_ISCHR(buf.st_mode)) { |
| return File::kTerminal; |
| } |
| if (S_ISFIFO(buf.st_mode)) { |
| return File::kPipe; |
| } |
| if (S_ISREG(buf.st_mode)) { |
| return File::kFile; |
| } |
| return File::kOther; |
| } |
| |
| intptr_t SocketBase::GetStdioHandle(intptr_t num) { |
| return num; |
| } |
| |
| AddressList<SocketAddress>* SocketBase::LookupAddress(const char* host, |
| int type, |
| OSError** os_error) { |
| // Perform a name lookup for a host name. |
| struct addrinfo hints; |
| memset(&hints, 0, sizeof(hints)); |
| hints.ai_family = SocketAddress::FromType(type); |
| hints.ai_socktype = SOCK_STREAM; |
| hints.ai_flags = 0; |
| hints.ai_protocol = IPPROTO_TCP; |
| struct addrinfo* info = NULL; |
| int status = getaddrinfo(host, 0, &hints, &info); |
| if (status != 0) { |
| ASSERT(*os_error == NULL); |
| *os_error = |
| new OSError(status, gai_strerror(status), OSError::kGetAddressInfo); |
| return NULL; |
| } |
| intptr_t count = 0; |
| for (struct addrinfo* c = info; c != NULL; c = c->ai_next) { |
| if ((c->ai_family == AF_INET) || (c->ai_family == AF_INET6)) { |
| count++; |
| } |
| } |
| intptr_t i = 0; |
| AddressList<SocketAddress>* addresses = new AddressList<SocketAddress>(count); |
| for (struct addrinfo* c = info; c != NULL; c = c->ai_next) { |
| if ((c->ai_family == AF_INET) || (c->ai_family == AF_INET6)) { |
| addresses->SetAt(i, new SocketAddress(c->ai_addr)); |
| i++; |
| } |
| } |
| freeaddrinfo(info); |
| return addresses; |
| } |
| |
| bool SocketBase::ReverseLookup(const RawAddr& addr, |
| char* host, |
| intptr_t host_len, |
| OSError** os_error) { |
| ASSERT(host_len >= NI_MAXHOST); |
| int status = NO_RETRY_EXPECTED( |
| getnameinfo(&addr.addr, SocketAddress::GetAddrLength(addr), host, |
| host_len, NULL, 0, NI_NAMEREQD)); |
| if (status != 0) { |
| ASSERT(*os_error == NULL); |
| *os_error = |
| new OSError(status, gai_strerror(status), OSError::kGetAddressInfo); |
| return false; |
| } |
| return true; |
| } |
| |
| bool SocketBase::ParseAddress(int type, const char* address, RawAddr* addr) { |
| int result; |
| if (type == SocketAddress::TYPE_IPV4) { |
| result = inet_pton(AF_INET, address, &addr->in.sin_addr); |
| } else { |
| ASSERT(type == SocketAddress::TYPE_IPV6); |
| result = inet_pton(AF_INET6, address, &addr->in6.sin6_addr); |
| } |
| return (result == 1); |
| } |
| |
| bool SocketBase::RawAddrToString(RawAddr* addr, char* str) { |
| if (addr->addr.sa_family == AF_INET) { |
| return inet_ntop(AF_INET, &addr->in.sin_addr, str, INET_ADDRSTRLEN) != NULL; |
| } else { |
| ASSERT(addr->addr.sa_family == AF_INET6); |
| return inet_ntop(AF_INET6, &addr->in6.sin6_addr, str, INET6_ADDRSTRLEN) != |
| NULL; |
| } |
| } |
| |
| static bool ShouldIncludeIfaAddrs(struct ifaddrs* ifa, int lookup_family) { |
| if (ifa->ifa_addr == NULL) { |
| // OpenVPN's virtual device tun0. |
| return false; |
| } |
| int family = ifa->ifa_addr->sa_family; |
| return ((lookup_family == family) || |
| ((lookup_family == AF_UNSPEC) && |
| ((family == AF_INET) || (family == AF_INET6)))); |
| } |
| |
| bool SocketBase::ListInterfacesSupported() { |
| return true; |
| } |
| |
| AddressList<InterfaceSocketAddress>* SocketBase::ListInterfaces( |
| int type, |
| OSError** os_error) { |
| struct ifaddrs* ifaddr; |
| |
| int status = getifaddrs(&ifaddr); |
| if (status != 0) { |
| ASSERT(*os_error == NULL); |
| *os_error = |
| new OSError(status, gai_strerror(status), OSError::kGetAddressInfo); |
| return NULL; |
| } |
| |
| int lookup_family = SocketAddress::FromType(type); |
| |
| intptr_t count = 0; |
| for (struct ifaddrs* ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) { |
| if (ShouldIncludeIfaAddrs(ifa, lookup_family)) { |
| count++; |
| } |
| } |
| |
| AddressList<InterfaceSocketAddress>* addresses = |
| new AddressList<InterfaceSocketAddress>(count); |
| int i = 0; |
| for (struct ifaddrs* ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) { |
| if (ShouldIncludeIfaAddrs(ifa, lookup_family)) { |
| char* ifa_name = DartUtils::ScopedCopyCString(ifa->ifa_name); |
| addresses->SetAt( |
| i, new InterfaceSocketAddress(ifa->ifa_addr, ifa_name, |
| if_nametoindex(ifa->ifa_name))); |
| i++; |
| } |
| } |
| freeifaddrs(ifaddr); |
| return addresses; |
| } |
| |
| void SocketBase::Close(intptr_t fd) { |
| ASSERT(fd >= 0); |
| close(fd); |
| } |
| |
| bool SocketBase::GetNoDelay(intptr_t fd, bool* enabled) { |
| int on; |
| socklen_t len = sizeof(on); |
| int err = NO_RETRY_EXPECTED(getsockopt(fd, IPPROTO_TCP, TCP_NODELAY, |
| reinterpret_cast<void*>(&on), &len)); |
| if (err == 0) { |
| *enabled = (on == 1); |
| } |
| return (err == 0); |
| } |
| |
| bool SocketBase::SetNoDelay(intptr_t fd, bool enabled) { |
| int on = enabled ? 1 : 0; |
| return NO_RETRY_EXPECTED(setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, |
| reinterpret_cast<char*>(&on), |
| sizeof(on))) == 0; |
| } |
| |
| bool SocketBase::GetMulticastLoop(intptr_t fd, |
| intptr_t protocol, |
| bool* enabled) { |
| uint8_t on; |
| socklen_t len = sizeof(on); |
| int level = protocol == SocketAddress::TYPE_IPV4 ? IPPROTO_IP : IPPROTO_IPV6; |
| int optname = protocol == SocketAddress::TYPE_IPV4 ? IP_MULTICAST_LOOP |
| : IPV6_MULTICAST_LOOP; |
| if (NO_RETRY_EXPECTED(getsockopt(fd, level, optname, |
| reinterpret_cast<char*>(&on), &len)) == 0) { |
| *enabled = (on == 1); |
| return true; |
| } |
| return false; |
| } |
| |
| bool SocketBase::SetMulticastLoop(intptr_t fd, |
| intptr_t protocol, |
| bool enabled) { |
| u_int on = enabled ? 1 : 0; |
| int level = protocol == SocketAddress::TYPE_IPV4 ? IPPROTO_IP : IPPROTO_IPV6; |
| int optname = protocol == SocketAddress::TYPE_IPV4 ? IP_MULTICAST_LOOP |
| : IPV6_MULTICAST_LOOP; |
| return NO_RETRY_EXPECTED(setsockopt( |
| fd, level, optname, reinterpret_cast<char*>(&on), sizeof(on))) == |
| 0; |
| } |
| |
| bool SocketBase::GetMulticastHops(intptr_t fd, intptr_t protocol, int* value) { |
| uint8_t v; |
| socklen_t len = sizeof(v); |
| int level = protocol == SocketAddress::TYPE_IPV4 ? IPPROTO_IP : IPPROTO_IPV6; |
| int optname = protocol == SocketAddress::TYPE_IPV4 ? IP_MULTICAST_TTL |
| : IPV6_MULTICAST_HOPS; |
| if (NO_RETRY_EXPECTED(getsockopt(fd, level, optname, |
| reinterpret_cast<char*>(&v), &len)) == 0) { |
| *value = v; |
| return true; |
| } |
| return false; |
| } |
| |
| bool SocketBase::SetMulticastHops(intptr_t fd, intptr_t protocol, int value) { |
| int v = value; |
| int level = protocol == SocketAddress::TYPE_IPV4 ? IPPROTO_IP : IPPROTO_IPV6; |
| int optname = protocol == SocketAddress::TYPE_IPV4 ? IP_MULTICAST_TTL |
| : IPV6_MULTICAST_HOPS; |
| return NO_RETRY_EXPECTED(setsockopt( |
| fd, level, optname, reinterpret_cast<char*>(&v), sizeof(v))) == 0; |
| } |
| |
| bool SocketBase::GetBroadcast(intptr_t fd, bool* enabled) { |
| int on; |
| socklen_t len = sizeof(on); |
| int err = NO_RETRY_EXPECTED(getsockopt(fd, SOL_SOCKET, SO_BROADCAST, |
| reinterpret_cast<char*>(&on), &len)); |
| if (err == 0) { |
| *enabled = (on == 1); |
| } |
| return (err == 0); |
| } |
| |
| bool SocketBase::SetBroadcast(intptr_t fd, bool enabled) { |
| int on = enabled ? 1 : 0; |
| return NO_RETRY_EXPECTED(setsockopt(fd, SOL_SOCKET, SO_BROADCAST, |
| reinterpret_cast<char*>(&on), |
| sizeof(on))) == 0; |
| } |
| |
| bool SocketBase::SetOption(intptr_t fd, |
| int level, |
| int option, |
| const char* data, |
| int length) { |
| return NO_RETRY_EXPECTED(setsockopt(fd, level, option, data, length)) == 0; |
| } |
| |
| bool SocketBase::GetOption(intptr_t fd, |
| int level, |
| int option, |
| char* data, |
| unsigned int* length) { |
| return NO_RETRY_EXPECTED(getsockopt(fd, level, option, data, length)) == 0; |
| } |
| |
| static bool JoinOrLeaveMulticast(intptr_t fd, |
| const RawAddr& addr, |
| const RawAddr& interface, |
| int interfaceIndex, |
| bool join) { |
| if (addr.addr.sa_family == AF_INET) { |
| ASSERT(interface.addr.sa_family == AF_INET); |
| struct ip_mreq mreq; |
| memmove(&mreq.imr_multiaddr, &addr.in.sin_addr, |
| SocketAddress::GetInAddrLength(addr)); |
| memmove(&mreq.imr_interface, &interface.in.sin_addr, |
| SocketAddress::GetInAddrLength(interface)); |
| if (join) { |
| return NO_RETRY_EXPECTED(setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, |
| &mreq, sizeof(mreq))) == 0; |
| } else { |
| return NO_RETRY_EXPECTED(setsockopt(fd, IPPROTO_IP, IP_DROP_MEMBERSHIP, |
| &mreq, sizeof(mreq))) == 0; |
| } |
| } else { |
| ASSERT(addr.addr.sa_family == AF_INET6); |
| struct ipv6_mreq mreq; |
| memmove(&mreq.ipv6mr_multiaddr, &addr.in6.sin6_addr, |
| SocketAddress::GetInAddrLength(addr)); |
| mreq.ipv6mr_interface = interfaceIndex; |
| if (join) { |
| return NO_RETRY_EXPECTED(setsockopt(fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, |
| &mreq, sizeof(mreq))) == 0; |
| } else { |
| return NO_RETRY_EXPECTED(setsockopt(fd, IPPROTO_IPV6, IPV6_LEAVE_GROUP, |
| &mreq, sizeof(mreq))) == 0; |
| } |
| } |
| } |
| |
| bool SocketBase::JoinMulticast(intptr_t fd, |
| const RawAddr& addr, |
| const RawAddr& interface, |
| int interfaceIndex) { |
| return JoinOrLeaveMulticast(fd, addr, interface, interfaceIndex, true); |
| } |
| |
| bool SocketBase::LeaveMulticast(intptr_t fd, |
| const RawAddr& addr, |
| const RawAddr& interface, |
| int interfaceIndex) { |
| return JoinOrLeaveMulticast(fd, addr, interface, interfaceIndex, false); |
| } |
| |
| } // namespace bin |
| } // namespace dart |
| |
| #endif // defined(HOST_OS_MACOS) |