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Mayaqua/Network.c: improve RecvFrom() and RecvFrom6()

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This commit improves the RecvFrom() and RecvFrom6() functions by:
- Using the right data type for the struct size variable passed to recvfrom().
- Improving the arguments validation mechanism.
- Printing unhandled errors.
This commit is contained in:
Davide Beatrici 2018-10-08 03:21:10 +02:00
parent 66b906378f
commit 9fa9f6cdc1
1 changed files with 53 additions and 53 deletions
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106
src/Mayaqua/Network.c
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@ -10707,36 +10707,40 @@ void FreeRouteTable(ROUTE_TABLE *t)
// UDP receiving
UINT RecvFrom(SOCK *sock, IP *src_addr, UINT *src_port, void *data, UINT size)
{
SOCKET s;
int ret, sz;
struct sockaddr_in addr;
int ret = 0;
#ifdef OS_WIN32
int socklen = sizeof(addr);
#else
socklen_t socklen = sizeof(addr);
#endif
// Validate arguments
if (sock != NULL)
{
if (sock->IPv6)
{
return RecvFrom6(sock, src_addr, src_port, data, size);
}
sock->IgnoreRecvErr = false;
}
if (sock == NULL || src_addr == NULL || src_port == NULL || data == NULL)
else
{
return false;
return 0;
}
if (src_addr == NULL || src_port == NULL || data == NULL || size == 0)
{
return 0;
}
if (sock->Type != SOCK_UDP || sock->socket == INVALID_SOCKET)
{
return false;
}
if (size == 0)
{
return false;
return 0;
}
if (sock->IPv6)
{
return RecvFrom6(sock, src_addr, src_port, data, size);
}
s = sock->socket;
sz = sizeof(addr);
ret = recvfrom(s, data, size, 0, (struct sockaddr *)&addr, (int *)&sz);
ret = recvfrom(sock->socket, data, size, 0, (struct sockaddr *)&addr, &socklen);
if (ret > 0)
{
InAddrToIP(src_addr, &addr.sin_addr);
@ -10744,13 +10748,6 @@ UINT RecvFrom(SOCK *sock, IP *src_addr, UINT *src_port, void *data, UINT size)
if (sock->IsRawSocket)
{
*src_port = sock->LocalPort;
/*
{
char tmp[MAX_SIZE];
IPToStr(tmp, sizeof(tmp), &sock->LocalIP);
Debug("Raw: %u from %s\n", sock->LocalPort, tmp);
}*/
}
Lock(sock->lock);
@ -10760,14 +10757,10 @@ UINT RecvFrom(SOCK *sock, IP *src_addr, UINT *src_port, void *data, UINT size)
}
Unlock(sock->lock);
// Debug("UDP RecvFrom: %u\n", ret);
return (UINT)ret;
}
else
{
sock->IgnoreRecvErr = false;
#ifdef OS_WIN32
if (WSAGetLastError() == WSAECONNRESET || WSAGetLastError() == WSAENETRESET || WSAGetLastError() == WSAEMSGSIZE || WSAGetLastError() == WSAENETUNREACH ||
WSAGetLastError() == WSAENOBUFS || WSAGetLastError() == WSAEHOSTUNREACH || WSAGetLastError() == WSAEUSERS || WSAGetLastError() == WSAEADDRNOTAVAIL || WSAGetLastError() == WSAEADDRNOTAVAIL)
@ -10780,10 +10773,9 @@ UINT RecvFrom(SOCK *sock, IP *src_addr, UINT *src_port, void *data, UINT size)
}
else
{
UINT e = WSAGetLastError();
// Debug("RecvFrom Error: %u\n", e);
Debug("RecvFrom(): recvfrom() failed with error: %u\n", WSAGetLastError());
}
#else // OS_WIN32
#else
if (errno == ECONNREFUSED || errno == ECONNRESET || errno == EMSGSIZE || errno == ENOBUFS || errno == ENOMEM || errno == EINTR)
{
sock->IgnoreRecvErr = true;
@ -10792,37 +10784,46 @@ UINT RecvFrom(SOCK *sock, IP *src_addr, UINT *src_port, void *data, UINT size)
{
return SOCK_LATER;
}
#endif // OS_WIN32
else
{
Debug("RecvFrom(): recvfrom() failed with error: %s\n", strerror(errno));
}
#endif
return 0;
}
}
UINT RecvFrom6(SOCK *sock, IP *src_addr, UINT *src_port, void *data, UINT size)
{
SOCKET s;
int ret, sz;
struct sockaddr_in6 addr;
int ret = 0;
#ifdef OS_WIN32
int socklen = sizeof(addr);
#else
socklen_t socklen = sizeof(addr);
#endif
// Validate arguments
if (sock != NULL)
{
sock->IgnoreRecvErr = false;
}
if (sock == NULL || src_addr == NULL || src_port == NULL || data == NULL)
else
{
return false;
return 0;
}
if (src_addr == NULL || src_port == NULL || data == NULL || size == 0)
{
return 0;
}
if (sock->Type != SOCK_UDP || sock->socket == INVALID_SOCKET)
{
return false;
}
if (size == 0)
{
return false;
return 0;
}
s = sock->socket;
sz = sizeof(addr);
ret = recvfrom(s, data, size, 0, (struct sockaddr *)&addr, (int *)&sz);
ret = recvfrom(sock->socket, data, size, 0, (struct sockaddr *)&addr, &socklen);
if (ret > 0)
{
InAddrToIP6(src_addr, &addr.sin6_addr);
@ -10840,14 +10841,10 @@ UINT RecvFrom6(SOCK *sock, IP *src_addr, UINT *src_port, void *data, UINT size)
}
Unlock(sock->lock);
// Debug("UDP RecvFrom: %u\n", ret);
return (UINT)ret;
}
else
{
sock->IgnoreRecvErr = false;
#ifdef OS_WIN32
if (WSAGetLastError() == WSAECONNRESET || WSAGetLastError() == WSAENETRESET || WSAGetLastError() == WSAEMSGSIZE || WSAGetLastError() == WSAENETUNREACH ||
WSAGetLastError() == WSAENOBUFS || WSAGetLastError() == WSAEHOSTUNREACH || WSAGetLastError() == WSAEUSERS || WSAGetLastError() == WSAEADDRNOTAVAIL || WSAGetLastError() == WSAEADDRNOTAVAIL)
@ -10860,10 +10857,9 @@ UINT RecvFrom6(SOCK *sock, IP *src_addr, UINT *src_port, void *data, UINT size)
}
else
{
UINT e = WSAGetLastError();
// Debug("RecvFrom Error: %u\n", e);
Debug("RecvFrom(): recvfrom() failed with error: %u\n", WSAGetLastError());
}
#else // OS_WIN32
#else
if (errno == ECONNREFUSED || errno == ECONNRESET || errno == EMSGSIZE || errno == ENOBUFS || errno == ENOMEM || errno == EINTR)
{
sock->IgnoreRecvErr = true;
@ -10872,7 +10868,11 @@ UINT RecvFrom6(SOCK *sock, IP *src_addr, UINT *src_port, void *data, UINT size)
{
return SOCK_LATER;
}
#endif // OS_WIN32
else
{
Debug("RecvFrom(): recvfrom() failed with error: %s\n", strerror(errno));
}
#endif
return 0;
}
}