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Fix: [Network] errno and strerror do not handle network errors on Windows

Browse Source
pull/259/head
rubidium42 3 years ago committed by Charles Pigott
parent a934dfe0be
commit 65c5a64719
7 changed files with 54 additions and 18 deletions
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14
src/network/core/address.cpp
Unescape Escape View File

@ -316,7 +316,7 @@ static SOCKET ConnectLoopProc(addrinfo *runp)
SOCKET sock = socket(runp->ai_family, runp->ai_socktype, runp->ai_protocol);
if (sock == INVALID_SOCKET) {
DEBUG(net, 1, "[%s] could not create %s socket: %s", type, family, strerror(errno));
DEBUG(net, 1, "[%s] could not create %s socket: %s", type, family, NetworkGetLastErrorString());
return INVALID_SOCKET;
}
@ -331,7 +331,7 @@ static SOCKET ConnectLoopProc(addrinfo *runp)
if (err != 0)
#endif
{
DEBUG(net, 1, "[%s] could not connect %s socket: %s", type, family, strerror(errno));
DEBUG(net, 1, "[%s] could not connect %s socket: %s", type, family, NetworkGetLastErrorString());
closesocket(sock);
return INVALID_SOCKET;
}
@ -369,7 +369,7 @@ static SOCKET ListenLoopProc(addrinfo *runp)
SOCKET sock = socket(runp->ai_family, runp->ai_socktype, runp->ai_protocol);
if (sock == INVALID_SOCKET) {
DEBUG(net, 0, "[%s] could not create %s socket on port %s: %s", type, family, address, strerror(errno));
DEBUG(net, 0, "[%s] could not create %s socket on port %s: %s", type, family, address, NetworkGetLastErrorString());
return INVALID_SOCKET;
}
@ -380,24 +380,24 @@ static SOCKET ListenLoopProc(addrinfo *runp)
int on = 1;
/* The (const char*) cast is needed for windows!! */
if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (const char*)&on, sizeof(on)) == -1) {
DEBUG(net, 3, "[%s] could not set reusable %s sockets for port %s: %s", type, family, address, strerror(errno));
DEBUG(net, 3, "[%s] could not set reusable %s sockets for port %s: %s", type, family, address, NetworkGetLastErrorString());
}
#ifndef __OS2__
if (runp->ai_family == AF_INET6 &&
setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, (const char*)&on, sizeof(on)) == -1) {
DEBUG(net, 3, "[%s] could not disable IPv4 over IPv6 on port %s: %s", type, address, strerror(errno));
DEBUG(net, 3, "[%s] could not disable IPv4 over IPv6 on port %s: %s", type, address, NetworkGetLastErrorString());
}
#endif
if (bind(sock, runp->ai_addr, (int)runp->ai_addrlen) != 0) {
DEBUG(net, 1, "[%s] could not bind on %s port %s: %s", type, family, address, strerror(errno));
DEBUG(net, 1, "[%s] could not bind on %s port %s: %s", type, family, address, NetworkGetLastErrorString());
closesocket(sock);
return INVALID_SOCKET;
}
if (runp->ai_socktype != SOCK_DGRAM && listen(sock, 1) != 0) {
DEBUG(net, 1, "[%s] could not listen at %s port %s: %s", type, family, address, strerror(errno));
DEBUG(net, 1, "[%s] could not listen at %s port %s: %s", type, family, address, NetworkGetLastErrorString());
closesocket(sock);
return INVALID_SOCKET;
}

17
src/network/core/core.cpp
Unescape Escape View File

@ -13,6 +13,7 @@
#include "../../debug.h"
#include "os_abstraction.h"
#include "packet.h"
#include "../../string_func.h"
#include "../../safeguards.h"
@ -48,6 +49,22 @@ void NetworkCoreShutdown()
#endif
}
#if defined(_WIN32)
/**
* Return the string representation of the given error from the OS's network functions.
* @param error The error number (from \c NetworkGetLastError()).
* @return The error message, potentially an empty string but never \c nullptr.
*/
const char *NetworkGetErrorString(int error)
{
static char buffer[512];
if (FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, error,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buffer, sizeof(buffer), NULL) == 0) {
seprintf(buffer, lastof(buffer), "Unknown error %d", error);
}
return buffer;
}
#endif /* defined(_WIN32) */
/**
* Serializes the GRFIdentifier (GRF ID and MD5 checksum) to the packet

25
src/network/core/os_abstraction.h
Unescape Escape View File

@ -23,9 +23,17 @@
#include <ws2tcpip.h>
#include <windows.h>
#define GET_LAST_ERROR() WSAGetLastError()
/**
* Get the last error code from any of the OS's network functions.
* What it returns and when it is reset, is implementation defined.
* @return The last error code.
*/
#define NetworkGetLastError() WSAGetLastError()
#undef EWOULDBLOCK
#define EWOULDBLOCK WSAEWOULDBLOCK
const char *NetworkGetErrorString(int error);
/* Windows has some different names for some types */
typedef unsigned long in_addr_t;
@ -51,7 +59,8 @@ typedef unsigned long in_addr_t;
# define INVALID_SOCKET -1
# define ioctlsocket ioctl
# define closesocket close
# define GET_LAST_ERROR() (errno)
# define NetworkGetLastError() (errno)
# define NetworkGetErrorString(error) (strerror(error))
/* Need this for FIONREAD on solaris */
# define BSD_COMP
@ -101,7 +110,8 @@ typedef unsigned long in_addr_t;
# define INVALID_SOCKET -1
# define ioctlsocket ioctl
# define closesocket close
# define GET_LAST_ERROR() (sock_errno())
# define NetworkGetLastError() (sock_errno())
# define NetworkGetErrorString(error) (strerror(error))
/* Includes needed for OS/2 systems */
# include <types.h>
@ -173,6 +183,15 @@ static inline socklen_t FixAddrLenForEmscripten(struct sockaddr_storage &address
}
#endif
/**
* Return the string representation of the last error from the OS's network functions.
* @return The error message, potentially an empty string but never \c nullptr.
*/
static inline const char *NetworkGetLastErrorString()
{
return NetworkGetErrorString(NetworkGetLastError());
}
/**
* Try to set the socket into non-blocking mode.
* @param d The socket to set the non-blocking more for.

6
src/network/core/tcp.cpp
Unescape Escape View File

@ -86,7 +86,7 @@ SendPacketsState NetworkTCPSocketHandler::SendPackets(bool closing_down)
while ((p = this->packet_queue) != nullptr) {
res = p->TransferOut<int>(send, this->sock, 0);
if (res == -1) {
int err = GET_LAST_ERROR();
int err = NetworkGetLastError();
if (err != EWOULDBLOCK) {
/* Something went wrong.. close client! */
if (!closing_down) {
@ -136,7 +136,7 @@ Packet *NetworkTCPSocketHandler::ReceivePacket()
while (p->RemainingBytesToTransfer() != 0) {
res = p->TransferIn<int>(recv, this->sock, 0);
if (res == -1) {
int err = GET_LAST_ERROR();
int err = NetworkGetLastError();
if (err != EWOULDBLOCK) {
/* Something went wrong... (104 is connection reset by peer) */
if (err != 104) DEBUG(net, 0, "recv failed with error %d", err);
@ -164,7 +164,7 @@ Packet *NetworkTCPSocketHandler::ReceivePacket()
while (p->RemainingBytesToTransfer() != 0) {
res = p->TransferIn<int>(recv, this->sock, 0);
if (res == -1) {
int err = GET_LAST_ERROR();
int err = NetworkGetLastError();
if (err != EWOULDBLOCK) {
/* Something went wrong... (104 is connection reset by peer) */
if (err != 104) DEBUG(net, 0, "recv failed with error %d", err);

2
src/network/core/tcp_http.cpp
Unescape Escape View File

@ -228,7 +228,7 @@ int NetworkHTTPSocketHandler::Receive()
for (;;) {
ssize_t res = recv(this->sock, (char *)this->recv_buffer + this->recv_pos, lengthof(this->recv_buffer) - this->recv_pos, 0);
if (res == -1) {
int err = GET_LAST_ERROR();
int err = NetworkGetLastError();
if (err != EWOULDBLOCK) {
/* Something went wrong... (104 is connection reset by peer) */
if (err != 104) DEBUG(net, 0, "recv failed with error %d", err);

4
src/network/core/tcp_listen.h
Unescape Escape View File

@ -64,7 +64,7 @@ public:
DEBUG(net, 1, "[%s] Banned ip tried to join (%s), refused", Tsocket::GetName(), entry.c_str());
if (p.TransferOut<int>(send, s, 0) < 0) {
DEBUG(net, 0, "send failed with error %d", GET_LAST_ERROR());
DEBUG(net, 0, "send failed with error %d", NetworkGetLastError());
}
closesocket(s);
break;
@ -81,7 +81,7 @@ public:
p.PrepareToSend();
if (p.TransferOut<int>(send, s, 0) < 0) {
DEBUG(net, 0, "send failed with error %d", GET_LAST_ERROR());
DEBUG(net, 0, "send failed with error %d", NetworkGetLastError());
}
closesocket(s);

4
src/network/core/udp.cpp
Unescape Escape View File

@ -94,7 +94,7 @@ void NetworkUDPSocketHandler::SendPacket(Packet *p, NetworkAddress *recv, bool a
/* Enable broadcast */
unsigned long val = 1;
if (setsockopt(s.second, SOL_SOCKET, SO_BROADCAST, (char *) &val, sizeof(val)) < 0) {
DEBUG(net, 1, "[udp] setting broadcast failed with: %i", GET_LAST_ERROR());
DEBUG(net, 1, "[udp] setting broadcast failed with: %i", NetworkGetLastError());
}
}
@ -103,7 +103,7 @@ void NetworkUDPSocketHandler::SendPacket(Packet *p, NetworkAddress *recv, bool a
DEBUG(net, 7, "[udp] sendto(%s)", send.GetAddressAsString().c_str());
/* Check for any errors, but ignore it otherwise */
if (res == -1) DEBUG(net, 1, "[udp] sendto(%s) failed with: %i", send.GetAddressAsString().c_str(), GET_LAST_ERROR());
if (res == -1) DEBUG(net, 1, "[udp] sendto(%s) failed with: %i", send.GetAddressAsString().c_str(), NetworkGetLastError());
if (!all) break;
}

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