blob: ba19b9b14486598eb6b439b5768073f0c9110e35 [file] [log] [blame]
// Copyright 2015 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "starboard/socket.h"
#include <errno.h>
#include <sys/socket.h>
#include "starboard/log.h"
#include "starboard/shared/posix/handle_eintr.h"
#include "starboard/shared/posix/socket_internal.h"
namespace sbposix = starboard::shared::posix;
namespace {
bool IsReportableErrno(int code) {
return (code != EAGAIN && code != EWOULDBLOCK && code != ECONNRESET);
}
} // namespace
int SbSocketReceiveFrom(SbSocket socket,
char* out_data,
int data_size,
SbSocketAddress* out_source) {
const int kRecvFlags = 0;
if (!SbSocketIsValid(socket)) {
errno = EBADF;
return -1;
}
SB_DCHECK(socket->socket_fd >= 0);
if (socket->protocol == kSbSocketProtocolTcp) {
if (out_source) {
sbposix::SockAddr sock_addr;
int result = getpeername(socket->socket_fd, sock_addr.sockaddr(),
&sock_addr.length);
if (result < 0) {
SB_DLOG(ERROR) << __FUNCTION__
<< ": getpeername failed, errno = " << errno;
socket->error = sbposix::TranslateSocketErrno(errno);
return -1;
}
if (!sock_addr.ToSbSocketAddress(out_source)) {
SB_DLOG(FATAL) << __FUNCTION__ << ": Bad TCP source address.";
socket->error = kSbSocketErrorFailed;
return -1;
}
}
ssize_t bytes_read =
recv(socket->socket_fd, out_data, data_size, kRecvFlags);
if (bytes_read >= 0) {
socket->error = kSbSocketOk;
return static_cast<int>(bytes_read);
}
if (IsReportableErrno(errno) &&
socket->error != sbposix::TranslateSocketErrno(errno)) {
SB_DLOG(ERROR) << "recv failed, errno = " << errno;
}
socket->error = sbposix::TranslateSocketErrno(errno);
return -1;
} else if (socket->protocol == kSbSocketProtocolUdp) {
sbposix::SockAddr sock_addr;
ssize_t bytes_read =
recvfrom(socket->socket_fd, out_data, data_size, kRecvFlags,
sock_addr.sockaddr(), &sock_addr.length);
if (bytes_read >= 0) {
if (out_source) {
if (!sock_addr.ToSbSocketAddress(out_source)) {
SB_DLOG(FATAL) << __FUNCTION__ << ": Bad UDP source address.";
socket->error = kSbSocketErrorFailed;
return -1;
}
}
socket->error = kSbSocketOk;
return static_cast<int>(bytes_read);
}
if (errno != EAGAIN && errno != EWOULDBLOCK &&
socket->error != sbposix::TranslateSocketErrno(errno)) {
SB_DLOG(ERROR) << "recvfrom failed, errno = " << errno;
}
socket->error = sbposix::TranslateSocketErrno(errno);
return -1;
}
SB_NOTREACHED() << "Unrecognized protocol: " << socket->protocol;
errno = EPROTONOSUPPORT;
return -1;
}