PR_IMPLEMENT(PRStatus) PR_NewTCPSocketPair(PRFileDesc *f[])
{
#ifdef XP_UNIX
PRInt32 rv, osfd[2];
rv = _PR_MD_SOCKETPAIR(AF_UNIX, SOCK_STREAM, 0, osfd);
if (rv == -1) {
return PR_FAILURE;
}
f[0] = PR_AllocFileDesc(osfd[0], PR_GetTCPMethods());
if (!f[0]) {
_PR_MD_CLOSE_SOCKET(osfd[0]);
_PR_MD_CLOSE_SOCKET(osfd[1]);
/* PR_AllocFileDesc() has invoked PR_SetError(). */
return PR_FAILURE;
}
f[1] = PR_AllocFileDesc(osfd[1], PR_GetTCPMethods());
if (!f[1]) {
PR_Close(f[0]);
_PR_MD_CLOSE_SOCKET(osfd[1]);
/* PR_AllocFileDesc() has invoked PR_SetError(). */
return PR_FAILURE;
}
_PR_MD_MAKE_NONBLOCK(f[0]);
_PR_MD_MAKE_NONBLOCK(f[1]);
return PR_SUCCESS;
#endif
/* XXX: this needs to be implemented for MAC and NT */
#ifdef XP_MAC
#pragma unused (f)
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, unimpErr);
return PR_FAILURE;
#endif
#ifdef XP_PC
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return PR_FAILURE;
#endif
}
PR_IMPLEMENT(PRFileDesc *) PR_ImportUDPSocket(PRInt32 osfd)
{
PRFileDesc *fd;
fd = PR_AllocFileDesc(osfd, PR_GetUDPMethods());
if (fd != NULL)
_PR_MD_MAKE_NONBLOCK(fd);
else
_PR_MD_CLOSE_SOCKET(osfd);
return(fd);
}
PR_IMPLEMENT(PRFileDesc *) PR_ImportUDPSocket(PROsfd osfd)
{
PRFileDesc *fd;
if (!_pr_initialized) _PR_ImplicitInitialization();
fd = PR_AllocFileDesc(osfd, PR_GetUDPMethods());
if (fd != NULL) {
_PR_MD_MAKE_NONBLOCK(fd);
_PR_MD_INIT_FD_INHERITABLE(fd, PR_TRUE);
} else
_PR_MD_CLOSE_SOCKET(osfd);
return(fd);
}
PR_IMPLEMENT(PRFileDesc*) PR_Socket(PRInt32 domain, PRInt32 type, PRInt32 proto)
{
PRInt32 osfd;
int one = 1;
PRFileDesc *fd;
if (!_pr_initialized) _PR_ImplicitInitialization();
if (AF_INET != domain
#if defined(_PR_INET6)
&& AF_INET6 != domain
#endif
) {
PR_SetError(PR_ADDRESS_NOT_SUPPORTED_ERROR, 0);
return NULL;
}
osfd = _PR_MD_SOCKET(domain, type, proto);
if (osfd == -1) {
return 0;
}
#ifdef HAVE_SOCKET_KEEPALIVE
/* "Keep-alive" packets are specific to TCP. */
if (domain == AF_INET && type == SOCK_STREAM) {
if (setsockopt(osfd, (int)SOL_SOCKET, SO_KEEPALIVE,
(const void *) &one, sizeof(one) ) < 0) {
_PR_MD_CLOSE_SOCKET(osfd);
return 0;
}
}
#endif
if (type == SOCK_STREAM)
fd = PR_AllocFileDesc(osfd, PR_GetTCPMethods());
else
fd = PR_AllocFileDesc(osfd, PR_GetUDPMethods());
/*
* Make the sockets non-blocking
*/
if (fd != NULL)
_PR_MD_MAKE_NONBLOCK(fd);
else
_PR_MD_CLOSE_SOCKET(osfd);
return fd;
}
PR_IMPLEMENT(PRFileDesc *) PR_ImportTCPSocket(PROsfd osfd)
{
PRFileDesc *fd;
if (!_pr_initialized) _PR_ImplicitInitialization();
fd = PR_AllocFileDesc(osfd, PR_GetTCPMethods());
if (fd != NULL) {
_PR_MD_MAKE_NONBLOCK(fd);
_PR_MD_INIT_FD_INHERITABLE(fd, PR_TRUE);
#ifdef _PR_NEED_SECRET_AF
/* this means we can only import IPv4 sockets here.
* but this is what the function in ptio.c does.
* We need a way to import IPv6 sockets, too.
*/
fd->secret->af = AF_INET;
#endif
} else
_PR_MD_CLOSE_SOCKET(osfd);
return(fd);
}
static PRFileDesc* PR_CALLBACK SocketAccept(PRFileDesc *fd, PRNetAddr *addr,
PRIntervalTime timeout)
{
PROsfd osfd;
PRFileDesc *fd2;
PRUint32 al;
PRThread *me = _PR_MD_CURRENT_THREAD();
#ifdef WINNT
PRNetAddr addrCopy;
#endif
if (_PR_PENDING_INTERRUPT(me)) {
me->flags &= ~_PR_INTERRUPT;
PR_SetError(PR_PENDING_INTERRUPT_ERROR, 0);
return 0;
}
if (_PR_IO_PENDING(me)) {
PR_SetError(PR_IO_PENDING_ERROR, 0);
return 0;
}
#ifdef WINNT
if (addr == NULL) {
addr = &addrCopy;
}
#endif
al = sizeof(PRNetAddr);
osfd = _PR_MD_ACCEPT(fd, addr, &al, timeout);
if (osfd == -1)
return 0;
fd2 = PR_AllocFileDesc(osfd, PR_GetTCPMethods());
if (!fd2) {
_PR_MD_CLOSE_SOCKET(osfd);
return NULL;
}
fd2->secret->nonblocking = fd->secret->nonblocking;
fd2->secret->inheritable = fd->secret->inheritable;
#ifdef WINNT
if (!fd2->secret->nonblocking && fd2->secret->inheritable != _PR_TRI_TRUE) {
/*
* The new socket has been associated with an I/O
* completion port. There is no going back.
*/
fd2->secret->md.io_model_committed = PR_TRUE;
}
PR_ASSERT(al == PR_NETADDR_SIZE(addr));
fd2->secret->md.accepted_socket = PR_TRUE;
memcpy(&fd2->secret->md.peer_addr, addr, al);
#endif
/*
* On some platforms, the new socket created by accept()
* inherits the nonblocking (or overlapped io) attribute
* of the listening socket. As an optimization, these
* platforms can skip the following _PR_MD_MAKE_NONBLOCK
* call.
*/
#if !defined(SOLARIS) && !defined(IRIX) && !defined(WINNT)
_PR_MD_MAKE_NONBLOCK(fd2);
#endif
#ifdef _PR_INET6
if (addr && (AF_INET6 == addr->raw.family))
addr->raw.family = PR_AF_INET6;
#endif
PR_ASSERT(IsValidNetAddr(addr) == PR_TRUE);
PR_ASSERT(IsValidNetAddrLen(addr, al) == PR_TRUE);
return fd2;
}
PR_IMPLEMENT(PRStatus) PR_NewTCPSocketPair(PRFileDesc *f[])
{
#ifdef XP_UNIX
PRInt32 rv, osfd[2];
if (!_pr_initialized) _PR_ImplicitInitialization();
rv = _PR_MD_SOCKETPAIR(AF_UNIX, SOCK_STREAM, 0, osfd);
if (rv == -1) {
return PR_FAILURE;
}
f[0] = PR_AllocFileDesc(osfd[0], PR_GetTCPMethods());
if (!f[0]) {
_PR_MD_CLOSE_SOCKET(osfd[0]);
_PR_MD_CLOSE_SOCKET(osfd[1]);
/* PR_AllocFileDesc() has invoked PR_SetError(). */
return PR_FAILURE;
}
f[1] = PR_AllocFileDesc(osfd[1], PR_GetTCPMethods());
if (!f[1]) {
PR_Close(f[0]);
_PR_MD_CLOSE_SOCKET(osfd[1]);
/* PR_AllocFileDesc() has invoked PR_SetError(). */
return PR_FAILURE;
}
_PR_MD_MAKE_NONBLOCK(f[0]);
_PR_MD_INIT_FD_INHERITABLE(f[0], PR_FALSE);
_PR_MD_MAKE_NONBLOCK(f[1]);
_PR_MD_INIT_FD_INHERITABLE(f[1], PR_FALSE);
return PR_SUCCESS;
#elif defined(WINNT)
/*
* A socket pair is often used for interprocess communication,
* so we need to make sure neither socket is associated with
* the I/O completion port; otherwise it can't be used by a
* child process.
*
* The default implementation below cannot be used for NT
* because PR_Accept would have associated the I/O completion
* port with the listening and accepted sockets.
*/
SOCKET listenSock;
SOCKET osfd[2];
struct sockaddr_in selfAddr, peerAddr;
int addrLen;
if (!_pr_initialized) _PR_ImplicitInitialization();
osfd[0] = osfd[1] = INVALID_SOCKET;
listenSock = socket(AF_INET, SOCK_STREAM, 0);
if (listenSock == INVALID_SOCKET) {
goto failed;
}
selfAddr.sin_family = AF_INET;
selfAddr.sin_port = 0;
selfAddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); /* BugZilla: 35408 */
addrLen = sizeof(selfAddr);
if (bind(listenSock, (struct sockaddr *) &selfAddr,
addrLen) == SOCKET_ERROR) {
goto failed;
}
if (getsockname(listenSock, (struct sockaddr *) &selfAddr,
&addrLen) == SOCKET_ERROR) {
goto failed;
}
if (listen(listenSock, 5) == SOCKET_ERROR) {
goto failed;
}
osfd[0] = socket(AF_INET, SOCK_STREAM, 0);
if (osfd[0] == INVALID_SOCKET) {
goto failed;
}
selfAddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
/*
* Only a thread is used to do the connect and accept.
* I am relying on the fact that connect returns
* successfully as soon as the connect request is put
* into the listen queue (but before accept is called).
* This is the behavior of the BSD socket code. If
* connect does not return until accept is called, we
* will need to create another thread to call connect.
*/
if (connect(osfd[0], (struct sockaddr *) &selfAddr,
addrLen) == SOCKET_ERROR) {
goto failed;
}
/*
* A malicious local process may connect to the listening
* socket, so we need to verify that the accepted connection
* is made from our own socket osfd[0].
*/
if (getsockname(osfd[0], (struct sockaddr *) &selfAddr,
&addrLen) == SOCKET_ERROR) {
goto failed;
}
osfd[1] = accept(listenSock, (struct sockaddr *) &peerAddr, &addrLen);
if (osfd[1] == INVALID_SOCKET) {
goto failed;
}
if (peerAddr.sin_port != selfAddr.sin_port) {
/* the connection we accepted is not from osfd[0] */
PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0);
goto failed;
}
closesocket(listenSock);
f[0] = PR_AllocFileDesc(osfd[0], PR_GetTCPMethods());
if (!f[0]) {
closesocket(osfd[0]);
closesocket(osfd[1]);
/* PR_AllocFileDesc() has invoked PR_SetError(). */
return PR_FAILURE;
}
f[1] = PR_AllocFileDesc(osfd[1], PR_GetTCPMethods());
if (!f[1]) {
PR_Close(f[0]);
closesocket(osfd[1]);
/* PR_AllocFileDesc() has invoked PR_SetError(). */
return PR_FAILURE;
}
_PR_MD_INIT_FD_INHERITABLE(f[0], PR_FALSE);
_PR_MD_INIT_FD_INHERITABLE(f[1], PR_FALSE);
return PR_SUCCESS;
failed:
if (listenSock != INVALID_SOCKET) {
closesocket(listenSock);
}
if (osfd[0] != INVALID_SOCKET) {
closesocket(osfd[0]);
}
if (osfd[1] != INVALID_SOCKET) {
closesocket(osfd[1]);
}
return PR_FAILURE;
#else /* not Unix or NT */
/*
* default implementation
*/
PRFileDesc *listenSock;
PRNetAddr selfAddr, peerAddr;
PRUint16 port;
f[0] = f[1] = NULL;
listenSock = PR_NewTCPSocket();
if (listenSock == NULL) {
goto failed;
}
PR_InitializeNetAddr(PR_IpAddrLoopback, 0, &selfAddr); /* BugZilla: 35408 */
if (PR_Bind(listenSock, &selfAddr) == PR_FAILURE) {
goto failed;
}
if (PR_GetSockName(listenSock, &selfAddr) == PR_FAILURE) {
goto failed;
}
port = ntohs(selfAddr.inet.port);
if (PR_Listen(listenSock, 5) == PR_FAILURE) {
goto failed;
}
f[0] = PR_NewTCPSocket();
if (f[0] == NULL) {
goto failed;
}
#ifdef _PR_CONNECT_DOES_NOT_BIND
/*
* If connect does not implicitly bind the socket (e.g., on
* BeOS), we have to bind the socket so that we can get its
* port with getsockname later.
*/
PR_InitializeNetAddr(PR_IpAddrLoopback, 0, &selfAddr);
if (PR_Bind(f[0], &selfAddr) == PR_FAILURE) {
goto failed;
}
#endif
PR_InitializeNetAddr(PR_IpAddrLoopback, port, &selfAddr);
/*
* Only a thread is used to do the connect and accept.
* I am relying on the fact that PR_Connect returns
* successfully as soon as the connect request is put
* into the listen queue (but before PR_Accept is called).
* This is the behavior of the BSD socket code. If
* connect does not return until accept is called, we
* will need to create another thread to call connect.
*/
if (PR_Connect(f[0], &selfAddr, PR_INTERVAL_NO_TIMEOUT)
== PR_FAILURE) {
goto failed;
}
/*
* A malicious local process may connect to the listening
* socket, so we need to verify that the accepted connection
* is made from our own socket f[0].
*/
if (PR_GetSockName(f[0], &selfAddr) == PR_FAILURE) {
goto failed;
}
f[1] = PR_Accept(listenSock, &peerAddr, PR_INTERVAL_NO_TIMEOUT);
if (f[1] == NULL) {
goto failed;
}
if (peerAddr.inet.port != selfAddr.inet.port) {
/* the connection we accepted is not from f[0] */
PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0);
goto failed;
}
PR_Close(listenSock);
return PR_SUCCESS;
failed:
if (listenSock) {
PR_Close(listenSock);
}
if (f[0]) {
PR_Close(f[0]);
}
if (f[1]) {
PR_Close(f[1]);
}
return PR_FAILURE;
#endif
}
PR_IMPLEMENT(PRFileDesc*) PR_Socket(PRInt32 domain, PRInt32 type, PRInt32 proto)
{
PROsfd osfd;
PRFileDesc *fd;
PRInt32 tmp_domain = domain;
if (!_pr_initialized) _PR_ImplicitInitialization();
if (PR_AF_INET != domain
&& PR_AF_INET6 != domain
#if defined(XP_UNIX) || defined(XP_OS2)
&& PR_AF_LOCAL != domain
#endif
) {
PR_SetError(PR_ADDRESS_NOT_SUPPORTED_ERROR, 0);
return NULL;
}
#if defined(_PR_INET6_PROBE)
if (PR_AF_INET6 == domain)
domain = _pr_ipv6_is_present() ? AF_INET6 : AF_INET;
#elif defined(_PR_INET6)
if (PR_AF_INET6 == domain)
domain = AF_INET6;
#else
if (PR_AF_INET6 == domain)
domain = AF_INET;
#endif /* _PR_INET6 */
osfd = _PR_MD_SOCKET(domain, type, proto);
if (osfd == -1) {
return 0;
}
if (type == SOCK_STREAM)
fd = PR_AllocFileDesc(osfd, PR_GetTCPMethods());
else
fd = PR_AllocFileDesc(osfd, PR_GetUDPMethods());
/*
* Make the sockets non-blocking
*/
if (fd != NULL) {
_PR_MD_MAKE_NONBLOCK(fd);
_PR_MD_INIT_FD_INHERITABLE(fd, PR_FALSE);
#ifdef _PR_NEED_SECRET_AF
fd->secret->af = domain;
#endif
#if defined(_PR_INET6_PROBE) || !defined(_PR_INET6)
/*
* For platforms with no support for IPv6
* create layered socket for IPv4-mapped IPv6 addresses
*/
if (PR_AF_INET6 == tmp_domain && PR_AF_INET == domain) {
if (PR_FAILURE == _pr_push_ipv6toipv4_layer(fd)) {
PR_Close(fd);
fd = NULL;
}
}
#endif
} else
_PR_MD_CLOSE_SOCKET(osfd);
return fd;
}
