/* Socket module */ /* This module provides an interface to Berkeley socket IPC. Limitations: - Only AF_INET, AF_INET6 and AF_UNIX address families are supported in a portable manner, though AF_PACKET, AF_NETLINK and AF_TIPC are supported under Linux. - No read/write operations (use sendall/recv or makefile instead). - Additional restrictions apply on some non-Unix platforms (compensated for by socket.py). Module interface: - socket.error: exception raised for socket specific errors - socket.gaierror: exception raised for getaddrinfo/getnameinfo errors, a subclass of socket.error - socket.herror: exception raised for gethostby* errors, a subclass of socket.error - socket.gethostbyname(hostname) --> host IP address (string: 'dd.dd.dd.dd') - socket.gethostbyaddr(IP address) --> (hostname, [alias, ...], [IP addr, ...]) - socket.gethostname() --> host name (string: 'spam' or 'spam.domain.com') - socket.getprotobyname(protocolname) --> protocol number - socket.getservbyname(servicename[, protocolname]) --> port number - socket.getservbyport(portnumber[, protocolname]) --> service name - socket.socket([family[, type [, proto, fileno]]]) --> new socket object (fileno specifies a pre-existing socket file descriptor) - socket.socketpair([family[, type [, proto]]]) --> (socket, socket) - socket.ntohs(16 bit value) --> new int object - socket.ntohl(32 bit value) --> new int object - socket.htons(16 bit value) --> new int object - socket.htonl(32 bit value) --> new int object - socket.getaddrinfo(host, port [, family, socktype, proto, flags]) --> List of (family, socktype, proto, canonname, sockaddr) - socket.getnameinfo(sockaddr, flags) --> (host, port) - socket.AF_INET, socket.SOCK_STREAM, etc.: constants from - socket.has_ipv6: boolean value indicating if IPv6 is supported - socket.inet_aton(IP address) -> 32-bit packed IP representation - socket.inet_ntoa(packed IP) -> IP address string - socket.getdefaulttimeout() -> None | float - socket.setdefaulttimeout(None | float) - socket.if_nameindex() -> list of tuples (if_index, if_name) - socket.if_nametoindex(name) -> corresponding interface index - socket.if_indextoname(index) -> corresponding interface name - an Internet socket address is a pair (hostname, port) where hostname can be anything recognized by gethostbyname() (including the dd.dd.dd.dd notation) and port is in host byte order - where a hostname is returned, the dd.dd.dd.dd notation is used - a UNIX domain socket address is a string specifying the pathname - an AF_PACKET socket address is a tuple containing a string specifying the ethernet interface and an integer specifying the Ethernet protocol number to be received. For example: ("eth0",0x1234). Optional 3rd,4th,5th elements in the tuple specify packet-type and ha-type/addr. - an AF_TIPC socket address is expressed as (addr_type, v1, v2, v3 [, scope]); where addr_type can be one of: TIPC_ADDR_NAMESEQ, TIPC_ADDR_NAME, and TIPC_ADDR_ID; and scope can be one of: TIPC_ZONE_SCOPE, TIPC_CLUSTER_SCOPE, and TIPC_NODE_SCOPE. The meaning of v1, v2 and v3 depends on the value of addr_type: if addr_type is TIPC_ADDR_NAME: v1 is the server type v2 is the port identifier v3 is ignored if addr_type is TIPC_ADDR_NAMESEQ: v1 is the server type v2 is the lower port number v3 is the upper port number if addr_type is TIPC_ADDR_ID: v1 is the node v2 is the ref v3 is ignored Local naming conventions: - names starting with sock_ are socket object methods - names starting with socket_ are module-level functions - names starting with PySocket are exported through socketmodule.h */ #ifdef __APPLE__ /* * inet_aton is not available on OSX 10.3, yet we want to use a binary * that was build on 10.4 or later to work on that release, weak linking * comes to the rescue. */ # pragma weak inet_aton #endif #include "Python.h" #include "structmember.h" #undef MAX #define MAX(x, y) ((x) < (y) ? (y) : (x)) /* Socket object documentation */ PyDoc_STRVAR(sock_doc, "socket([family[, type[, proto]]]) -> socket object\n\ \n\ Open a socket of the given type. The family argument specifies the\n\ address family; it defaults to AF_INET. The type argument specifies\n\ whether this is a stream (SOCK_STREAM, this is the default)\n\ or datagram (SOCK_DGRAM) socket. The protocol argument defaults to 0,\n\ specifying the default protocol. Keyword arguments are accepted.\n\ \n\ A socket object represents one endpoint of a network connection.\n\ \n\ Methods of socket objects (keyword arguments not allowed):\n\ \n\ _accept() -- accept connection, returning new socket fd and client address\n\ bind(addr) -- bind the socket to a local address\n\ close() -- close the socket\n\ connect(addr) -- connect the socket to a remote address\n\ connect_ex(addr) -- connect, return an error code instead of an exception\n\ _dup() -- return a new socket fd duplicated from fileno()\n\ fileno() -- return underlying file descriptor\n\ getpeername() -- return remote address [*]\n\ getsockname() -- return local address\n\ getsockopt(level, optname[, buflen]) -- get socket options\n\ gettimeout() -- return timeout or None\n\ listen(n) -- start listening for incoming connections\n\ recv(buflen[, flags]) -- receive data\n\ recv_into(buffer[, nbytes[, flags]]) -- receive data (into a buffer)\n\ recvfrom(buflen[, flags]) -- receive data and sender\'s address\n\ recvfrom_into(buffer[, nbytes, [, flags])\n\ -- receive data and sender\'s address (into a buffer)\n\ sendall(data[, flags]) -- send all data\n\ send(data[, flags]) -- send data, may not send all of it\n\ sendto(data[, flags], addr) -- send data to a given address\n\ setblocking(0 | 1) -- set or clear the blocking I/O flag\n\ setsockopt(level, optname, value) -- set socket options\n\ settimeout(None | float) -- set or clear the timeout\n\ shutdown(how) -- shut down traffic in one or both directions\n\ if_nameindex() -- return all network interface indices and names\n\ if_nametoindex(name) -- return the corresponding interface index\n\ if_indextoname(index) -- return the corresponding interface name\n\ \n\ [*] not available on all platforms!"); /* XXX This is a terrible mess of platform-dependent preprocessor hacks. I hope some day someone can clean this up please... */ /* Hacks for gethostbyname_r(). On some non-Linux platforms, the configure script doesn't get this right, so we hardcode some platform checks below. On the other hand, not all Linux versions agree, so there the settings computed by the configure script are needed! */ #ifndef linux # undef HAVE_GETHOSTBYNAME_R_3_ARG # undef HAVE_GETHOSTBYNAME_R_5_ARG # undef HAVE_GETHOSTBYNAME_R_6_ARG #endif #if defined(__OpenBSD__) # include #endif #ifndef WITH_THREAD # undef HAVE_GETHOSTBYNAME_R #endif #ifdef HAVE_GETHOSTBYNAME_R # if defined(_AIX) # define HAVE_GETHOSTBYNAME_R_3_ARG # elif defined(__sun) || defined(__sgi) # define HAVE_GETHOSTBYNAME_R_5_ARG # elif defined(linux) /* Rely on the configure script */ # else # undef HAVE_GETHOSTBYNAME_R # endif #endif #if !defined(HAVE_GETHOSTBYNAME_R) && defined(WITH_THREAD) && \ !defined(MS_WINDOWS) # define USE_GETHOSTBYNAME_LOCK #endif /* To use __FreeBSD_version */ #ifdef HAVE_SYS_PARAM_H #include #endif /* On systems on which getaddrinfo() is believed to not be thread-safe, (this includes the getaddrinfo emulation) protect access with a lock. */ #if defined(WITH_THREAD) && (defined(__APPLE__) || \ (defined(__FreeBSD__) && __FreeBSD_version+0 < 503000) || \ defined(__OpenBSD__) || defined(__NetBSD__) || \ defined(__VMS) || !defined(HAVE_GETADDRINFO)) #define USE_GETADDRINFO_LOCK #endif #ifdef USE_GETADDRINFO_LOCK #define ACQUIRE_GETADDRINFO_LOCK PyThread_acquire_lock(netdb_lock, 1); #define RELEASE_GETADDRINFO_LOCK PyThread_release_lock(netdb_lock); #else #define ACQUIRE_GETADDRINFO_LOCK #define RELEASE_GETADDRINFO_LOCK #endif #if defined(USE_GETHOSTBYNAME_LOCK) || defined(USE_GETADDRINFO_LOCK) # include "pythread.h" #endif #if defined(PYCC_VACPP) # include # include # include # include # include #endif #if defined(__VMS) # include #endif #if defined(PYOS_OS2) # define INCL_DOS # define INCL_DOSERRORS # define INCL_NOPMAPI # include #endif #if defined(__sgi) && _COMPILER_VERSION>700 && !_SGIAPI /* make sure that the reentrant (gethostbyaddr_r etc) functions are declared correctly if compiling with MIPSPro 7.x in ANSI C mode (default) */ /* XXX Using _SGIAPI is the wrong thing, but I don't know what the right thing is. */ #undef _SGIAPI /* to avoid warning */ #define _SGIAPI 1 #undef _XOPEN_SOURCE #include #include #include #ifdef _SS_ALIGNSIZE #define HAVE_GETADDRINFO 1 #define HAVE_GETNAMEINFO 1 #endif #define HAVE_INET_PTON #include #endif /* Irix 6.5 fails to define this variable at all. This is needed for both GCC and SGI's compiler. I'd say that the SGI headers are just busted. Same thing for Solaris. */ #if (defined(__sgi) || defined(sun)) && !defined(INET_ADDRSTRLEN) #define INET_ADDRSTRLEN 16 #endif /* Generic includes */ #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif #ifdef HAVE_NET_IF_H #include #endif /* Generic socket object definitions and includes */ #define PySocket_BUILDING_SOCKET #include "socketmodule.h" /* Addressing includes */ #ifndef MS_WINDOWS /* Non-MS WINDOWS includes */ # include # include /* Headers needed for inet_ntoa() and inet_addr() */ # if defined(PYOS_OS2) && defined(PYCC_VACPP) # include typedef size_t socklen_t; # else # include # endif # include #else /* MS_WINDOWS includes */ # ifdef HAVE_FCNTL_H # include # endif #endif #include #ifndef offsetof # define offsetof(type, member) ((size_t)(&((type *)0)->member)) #endif #ifndef O_NONBLOCK # define O_NONBLOCK O_NDELAY #endif /* include Python's addrinfo.h unless it causes trouble */ #if defined(__sgi) && _COMPILER_VERSION>700 && defined(_SS_ALIGNSIZE) /* Do not include addinfo.h on some newer IRIX versions. * _SS_ALIGNSIZE is defined in sys/socket.h by 6.5.21, * for example, but not by 6.5.10. */ #elif defined(_MSC_VER) && _MSC_VER>1201 /* Do not include addrinfo.h for MSVC7 or greater. 'addrinfo' and * EAI_* constants are defined in (the already included) ws2tcpip.h. */ #else # include "addrinfo.h" #endif #ifndef HAVE_INET_PTON #if !defined(NTDDI_VERSION) || (NTDDI_VERSION < NTDDI_LONGHORN) int inet_pton(int af, const char *src, void *dst); const char *inet_ntop(int af, const void *src, char *dst, socklen_t size); #endif #endif #ifdef __APPLE__ /* On OS X, getaddrinfo returns no error indication of lookup failure, so we must use the emulation instead of the libinfo implementation. Unfortunately, performing an autoconf test for this bug would require DNS access for the machine performing the configuration, which is not acceptable. Therefore, we determine the bug just by checking for __APPLE__. If this bug gets ever fixed, perhaps checking for sys/version.h would be appropriate, which is 10/0 on the system with the bug. */ #ifndef HAVE_GETNAMEINFO /* This bug seems to be fixed in Jaguar. Ths easiest way I could Find to check for Jaguar is that it has getnameinfo(), which older releases don't have */ #undef HAVE_GETADDRINFO #endif #ifdef HAVE_INET_ATON #define USE_INET_ATON_WEAKLINK #endif #endif /* I know this is a bad practice, but it is the easiest... */ #if !defined(HAVE_GETADDRINFO) /* avoid clashes with the C library definition of the symbol. */ #define getaddrinfo fake_getaddrinfo #define gai_strerror fake_gai_strerror #define freeaddrinfo fake_freeaddrinfo #include "getaddrinfo.c" #endif #if !defined(HAVE_GETNAMEINFO) #define getnameinfo fake_getnameinfo #include "getnameinfo.c" #endif #ifdef MS_WINDOWS /* On Windows a socket is really a handle not an fd */ static SOCKET dup_socket(SOCKET handle) { WSAPROTOCOL_INFO info; if (WSADuplicateSocket(handle, GetCurrentProcessId(), &info)) return INVALID_SOCKET; return WSASocket(FROM_PROTOCOL_INFO, FROM_PROTOCOL_INFO, FROM_PROTOCOL_INFO, &info, 0, 0); } #define SOCKETCLOSE closesocket #else /* On Unix we can use dup to duplicate the file descriptor of a socket*/ #define dup_socket(fd) dup(fd) #endif #ifdef MS_WIN32 #define EAFNOSUPPORT WSAEAFNOSUPPORT #define snprintf _snprintf #endif #if defined(PYOS_OS2) && !defined(PYCC_GCC) #define SOCKETCLOSE soclose #define NO_DUP /* Sockets are Not Actual File Handles under OS/2 */ #endif #ifndef SOCKETCLOSE #define SOCKETCLOSE close #endif #if (defined(HAVE_BLUETOOTH_H) || defined(HAVE_BLUETOOTH_BLUETOOTH_H)) && !defined(__NetBSD__) && !defined(__DragonFly__) #define USE_BLUETOOTH 1 #if defined(__FreeBSD__) #define BTPROTO_L2CAP BLUETOOTH_PROTO_L2CAP #define BTPROTO_RFCOMM BLUETOOTH_PROTO_RFCOMM #define BTPROTO_HCI BLUETOOTH_PROTO_HCI #define SOL_HCI SOL_HCI_RAW #define HCI_FILTER SO_HCI_RAW_FILTER #define sockaddr_l2 sockaddr_l2cap #define sockaddr_rc sockaddr_rfcomm #define hci_dev hci_node #define _BT_L2_MEMB(sa, memb) ((sa)->l2cap_##memb) #define _BT_RC_MEMB(sa, memb) ((sa)->rfcomm_##memb) #define _BT_HCI_MEMB(sa, memb) ((sa)->hci_##memb) #elif defined(__NetBSD__) || defined(__DragonFly__) #define sockaddr_l2 sockaddr_bt #define sockaddr_rc sockaddr_bt #define sockaddr_hci sockaddr_bt #define sockaddr_sco sockaddr_bt #define SOL_HCI BTPROTO_HCI #define HCI_DATA_DIR SO_HCI_DIRECTION #define _BT_L2_MEMB(sa, memb) ((sa)->bt_##memb) #define _BT_RC_MEMB(sa, memb) ((sa)->bt_##memb) #define _BT_HCI_MEMB(sa, memb) ((sa)->bt_##memb) #define _BT_SCO_MEMB(sa, memb) ((sa)->bt_##memb) #else #define _BT_L2_MEMB(sa, memb) ((sa)->l2_##memb) #define _BT_RC_MEMB(sa, memb) ((sa)->rc_##memb) #define _BT_HCI_MEMB(sa, memb) ((sa)->hci_##memb) #define _BT_SCO_MEMB(sa, memb) ((sa)->sco_##memb) #endif #endif #ifdef __VMS /* TCP/IP Services for VMS uses a maximum send/recv buffer length */ #define SEGMENT_SIZE (32 * 1024 -1) #endif #define SAS2SA(x) ((struct sockaddr *)(x)) /* * Constants for getnameinfo() */ #if !defined(NI_MAXHOST) #define NI_MAXHOST 1025 #endif #if !defined(NI_MAXSERV) #define NI_MAXSERV 32 #endif #ifndef INVALID_SOCKET /* MS defines this */ #define INVALID_SOCKET (-1) #endif /* XXX There's a problem here: *static* functions are not supposed to have a Py prefix (or use CapitalizedWords). Later... */ /* Global variable holding the exception type for errors detected by this module (but not argument type or memory errors, etc.). */ static PyObject *socket_error; static PyObject *socket_herror; static PyObject *socket_gaierror; static PyObject *socket_timeout; /* A forward reference to the socket type object. The sock_type variable contains pointers to various functions, some of which call new_sockobject(), which uses sock_type, so there has to be a circular reference. */ static PyTypeObject sock_type; #if defined(HAVE_POLL_H) #include #elif defined(HAVE_SYS_POLL_H) #include #endif /* Largest value to try to store in a socklen_t (used when handling ancillary data). POSIX requires socklen_t to hold at least (2**31)-1 and recommends against storing larger values, but socklen_t was originally int in the BSD interface, so to be on the safe side we use the smaller of (2**31)-1 and INT_MAX. */ #if INT_MAX > 0x7fffffff #define SOCKLEN_T_LIMIT 0x7fffffff #else #define SOCKLEN_T_LIMIT INT_MAX #endif #ifdef HAVE_POLL /* Instead of select(), we'll use poll() since poll() works on any fd. */ #define IS_SELECTABLE(s) 1 /* Can we call select() with this socket without a buffer overrun? */ #else /* If there's no timeout left, we don't have to call select, so it's a safe, * little white lie. */ #define IS_SELECTABLE(s) (_PyIsSelectable_fd((s)->sock_fd) || (s)->sock_timeout <= 0.0) #endif static PyObject* select_error(void) { PyErr_SetString(socket_error, "unable to select on socket"); return NULL; } #ifdef MS_WINDOWS #ifndef WSAEAGAIN #define WSAEAGAIN WSAEWOULDBLOCK #endif #define CHECK_ERRNO(expected) \ (WSAGetLastError() == WSA ## expected) #else #define CHECK_ERRNO(expected) \ (errno == expected) #endif /* Convenience function to raise an error according to errno and return a NULL pointer from a function. */ static PyObject * set_error(void) { #ifdef MS_WINDOWS int err_no = WSAGetLastError(); /* PyErr_SetExcFromWindowsErr() invokes FormatMessage() which recognizes the error codes used by both GetLastError() and WSAGetLastError */ if (err_no) return PyErr_SetExcFromWindowsErr(socket_error, err_no); #endif #if defined(PYOS_OS2) && !defined(PYCC_GCC) if (sock_errno() != NO_ERROR) { APIRET rc; ULONG msglen; char outbuf[100]; int myerrorcode = sock_errno(); /* Retrieve socket-related error message from MPTN.MSG file */ rc = DosGetMessage(NULL, 0, outbuf, sizeof(outbuf), myerrorcode - SOCBASEERR + 26, "mptn.msg", &msglen); if (rc == NO_ERROR) { PyObject *v; /* OS/2 doesn't guarantee a terminator */ outbuf[msglen] = '\0'; if (strlen(outbuf) > 0) { /* If non-empty msg, trim CRLF */ char *lastc = &outbuf[ strlen(outbuf)-1 ]; while (lastc > outbuf && isspace(Py_CHARMASK(*lastc))) { /* Trim trailing whitespace (CRLF) */ *lastc-- = '\0'; } } v = Py_BuildValue("(is)", myerrorcode, outbuf); if (v != NULL) { PyErr_SetObject(socket_error, v); Py_DECREF(v); } return NULL; } } #endif return PyErr_SetFromErrno(socket_error); } static PyObject * set_herror(int h_error) { PyObject *v; #ifdef HAVE_HSTRERROR v = Py_BuildValue("(is)", h_error, (char *)hstrerror(h_error)); #else v = Py_BuildValue("(is)", h_error, "host not found"); #endif if (v != NULL) { PyErr_SetObject(socket_herror, v); Py_DECREF(v); } return NULL; } static PyObject * set_gaierror(int error) { PyObject *v; #ifdef EAI_SYSTEM /* EAI_SYSTEM is not available on Windows XP. */ if (error == EAI_SYSTEM) return set_error(); #endif #ifdef HAVE_GAI_STRERROR v = Py_BuildValue("(is)", error, gai_strerror(error)); #else v = Py_BuildValue("(is)", error, "getaddrinfo failed"); #endif if (v != NULL) { PyErr_SetObject(socket_gaierror, v); Py_DECREF(v); } return NULL; } #ifdef __VMS /* Function to send in segments */ static int sendsegmented(int sock_fd, char *buf, int len, int flags) { int n = 0; int remaining = len; while (remaining > 0) { unsigned int segment; segment = (remaining >= SEGMENT_SIZE ? SEGMENT_SIZE : remaining); n = send(sock_fd, buf, segment, flags); if (n < 0) { return n; } remaining -= segment; buf += segment; } /* end while */ return len; } #endif /* Function to perform the setting of socket blocking mode internally. block = (1 | 0). */ static int internal_setblocking(PySocketSockObject *s, int block) { #ifndef MS_WINDOWS int delay_flag; #endif #ifdef SOCK_NONBLOCK if (block) s->sock_type &= (~SOCK_NONBLOCK); else s->sock_type |= SOCK_NONBLOCK; #endif Py_BEGIN_ALLOW_THREADS #ifndef MS_WINDOWS #if defined(PYOS_OS2) && !defined(PYCC_GCC) block = !block; ioctl(s->sock_fd, FIONBIO, (caddr_t)&block, sizeof(block)); #elif defined(__VMS) block = !block; ioctl(s->sock_fd, FIONBIO, (unsigned int *)&block); #else /* !PYOS_OS2 && !__VMS */ delay_flag = fcntl(s->sock_fd, F_GETFL, 0); if (block) delay_flag &= (~O_NONBLOCK); else delay_flag |= O_NONBLOCK; fcntl(s->sock_fd, F_SETFL, delay_flag); #endif /* !PYOS_OS2 */ #else /* MS_WINDOWS */ block = !block; ioctlsocket(s->sock_fd, FIONBIO, (u_long*)&block); #endif /* MS_WINDOWS */ Py_END_ALLOW_THREADS /* Since these don't return anything */ return 1; } /* Do a select()/poll() on the socket, if necessary (sock_timeout > 0). The argument writing indicates the direction. This does not raise an exception; we'll let our caller do that after they've reacquired the interpreter lock. Returns 1 on timeout, -1 on error, 0 otherwise. */ static int internal_select_ex(PySocketSockObject *s, int writing, double interval) { int n; /* Nothing to do unless we're in timeout mode (not non-blocking) */ if (s->sock_timeout <= 0.0) return 0; /* Guard against closed socket */ if (s->sock_fd < 0) return 0; /* Handling this condition here simplifies the select loops */ if (interval < 0.0) return 1; /* Prefer poll, if available, since you can poll() any fd * which can't be done with select(). */ #ifdef HAVE_POLL { struct pollfd pollfd; int timeout; pollfd.fd = s->sock_fd; pollfd.events = writing ? POLLOUT : POLLIN; /* s->sock_timeout is in seconds, timeout in ms */ timeout = (int)(interval * 1000 + 0.5); n = poll(&pollfd, 1, timeout); } #else { /* Construct the arguments to select */ fd_set fds; struct timeval tv; tv.tv_sec = (int)interval; tv.tv_usec = (int)((interval - tv.tv_sec) * 1e6); FD_ZERO(&fds); FD_SET(s->sock_fd, &fds); /* See if the socket is ready */ if (writing) n = select(Py_SAFE_DOWNCAST(s->sock_fd+1, SOCKET_T, int), NULL, &fds, NULL, &tv); else n = select(Py_SAFE_DOWNCAST(s->sock_fd+1, SOCKET_T, int), &fds, NULL, NULL, &tv); } #endif if (n < 0) return -1; if (n == 0) return 1; return 0; } static int internal_select(PySocketSockObject *s, int writing) { return internal_select_ex(s, writing, s->sock_timeout); } /* Two macros for automatic retry of select() in case of false positives (for example, select() could indicate a socket is ready for reading but the data then discarded by the OS because of a wrong checksum). Here is an example of use: BEGIN_SELECT_LOOP(s) Py_BEGIN_ALLOW_THREADS timeout = internal_select_ex(s, 0, interval); if (!timeout) outlen = recv(s->sock_fd, cbuf, len, flags); Py_END_ALLOW_THREADS if (timeout == 1) { PyErr_SetString(socket_timeout, "timed out"); return -1; } END_SELECT_LOOP(s) */ #define BEGIN_SELECT_LOOP(s) \ { \ _PyTime_timeval now, deadline = {0, 0}; \ double interval = s->sock_timeout; \ int has_timeout = s->sock_timeout > 0.0; \ if (has_timeout) { \ _PyTime_gettimeofday(&now); \ deadline = now; \ _PyTime_ADD_SECONDS(deadline, s->sock_timeout); \ } \ while (1) { \ errno = 0; \ #define END_SELECT_LOOP(s) \ if (!has_timeout || \ (!CHECK_ERRNO(EWOULDBLOCK) && !CHECK_ERRNO(EAGAIN))) \ break; \ _PyTime_gettimeofday(&now); \ interval = _PyTime_INTERVAL(now, deadline); \ } \ } \ /* Initialize a new socket object. */ static double defaulttimeout = -1.0; /* Default timeout for new sockets */ static void init_sockobject(PySocketSockObject *s, SOCKET_T fd, int family, int type, int proto) { s->sock_fd = fd; s->sock_family = family; s->sock_type = type; s->sock_proto = proto; s->errorhandler = &set_error; #ifdef SOCK_NONBLOCK if (type & SOCK_NONBLOCK) s->sock_timeout = 0.0; else #endif { s->sock_timeout = defaulttimeout; if (defaulttimeout >= 0.0) internal_setblocking(s, 0); } } /* Create a new socket object. This just creates the object and initializes it. If the creation fails, return NULL and set an exception (implicit in NEWOBJ()). */ static PySocketSockObject * new_sockobject(SOCKET_T fd, int family, int type, int proto) { PySocketSockObject *s; s = (PySocketSockObject *) PyType_GenericNew(&sock_type, NULL, NULL); if (s != NULL) init_sockobject(s, fd, family, type, proto); return s; } /* Lock to allow python interpreter to continue, but only allow one thread to be in gethostbyname or getaddrinfo */ #if defined(USE_GETHOSTBYNAME_LOCK) || defined(USE_GETADDRINFO_LOCK) PyThread_type_lock netdb_lock; #endif /* Convert a string specifying a host name or one of a few symbolic names to a numeric IP address. This usually calls gethostbyname() to do the work; the names "" and "" are special. Return the length (IPv4 should be 4 bytes), or negative if an error occurred; then an exception is raised. */ static int setipaddr(char *name, struct sockaddr *addr_ret, size_t addr_ret_size, int af) { struct addrinfo hints, *res; int error; int d1, d2, d3, d4; char ch; memset((void *) addr_ret, '\0', sizeof(*addr_ret)); if (name[0] == '\0') { int siz; memset(&hints, 0, sizeof(hints)); hints.ai_family = af; hints.ai_socktype = SOCK_DGRAM; /*dummy*/ hints.ai_flags = AI_PASSIVE; Py_BEGIN_ALLOW_THREADS ACQUIRE_GETADDRINFO_LOCK error = getaddrinfo(NULL, "0", &hints, &res); Py_END_ALLOW_THREADS /* We assume that those thread-unsafe getaddrinfo() versions *are* safe regarding their return value, ie. that a subsequent call to getaddrinfo() does not destroy the outcome of the first call. */ RELEASE_GETADDRINFO_LOCK if (error) { set_gaierror(error); return -1; } switch (res->ai_family) { case AF_INET: siz = 4; break; #ifdef ENABLE_IPV6 case AF_INET6: siz = 16; break; #endif default: freeaddrinfo(res); PyErr_SetString(socket_error, "unsupported address family"); return -1; } if (res->ai_next) { freeaddrinfo(res); PyErr_SetString(socket_error, "wildcard resolved to multiple address"); return -1; } if (res->ai_addrlen < addr_ret_size) addr_ret_size = res->ai_addrlen; memcpy(addr_ret, res->ai_addr, addr_ret_size); freeaddrinfo(res); return siz; } if (name[0] == '<' && strcmp(name, "") == 0) { struct sockaddr_in *sin; if (af != AF_INET && af != AF_UNSPEC) { PyErr_SetString(socket_error, "address family mismatched"); return -1; } sin = (struct sockaddr_in *)addr_ret; memset((void *) sin, '\0', sizeof(*sin)); sin->sin_family = AF_INET; #ifdef HAVE_SOCKADDR_SA_LEN sin->sin_len = sizeof(*sin); #endif sin->sin_addr.s_addr = INADDR_BROADCAST; return sizeof(sin->sin_addr); } if (sscanf(name, "%d.%d.%d.%d%c", &d1, &d2, &d3, &d4, &ch) == 4 && 0 <= d1 && d1 <= 255 && 0 <= d2 && d2 <= 255 && 0 <= d3 && d3 <= 255 && 0 <= d4 && d4 <= 255) { struct sockaddr_in *sin; sin = (struct sockaddr_in *)addr_ret; sin->sin_addr.s_addr = htonl( ((long) d1 << 24) | ((long) d2 << 16) | ((long) d3 << 8) | ((long) d4 << 0)); sin->sin_family = AF_INET; #ifdef HAVE_SOCKADDR_SA_LEN sin->sin_len = sizeof(*sin); #endif return 4; } memset(&hints, 0, sizeof(hints)); hints.ai_family = af; Py_BEGIN_ALLOW_THREADS ACQUIRE_GETADDRINFO_LOCK error = getaddrinfo(name, NULL, &hints, &res); #if defined(__digital__) && defined(__unix__) if (error == EAI_NONAME && af == AF_UNSPEC) { /* On Tru64 V5.1, numeric-to-addr conversion fails if no address family is given. Assume IPv4 for now.*/ hints.ai_family = AF_INET; error = getaddrinfo(name, NULL, &hints, &res); } #endif Py_END_ALLOW_THREADS RELEASE_GETADDRINFO_LOCK /* see comment in setipaddr() */ if (error) { set_gaierror(error); return -1; } if (res->ai_addrlen < addr_ret_size) addr_ret_size = res->ai_addrlen; memcpy((char *) addr_ret, res->ai_addr, addr_ret_size); freeaddrinfo(res); switch (addr_ret->sa_family) { case AF_INET: return 4; #ifdef ENABLE_IPV6 case AF_INET6: return 16; #endif default: PyErr_SetString(socket_error, "unknown address family"); return -1; } } /* Create a string object representing an IP address. This is always a string of the form 'dd.dd.dd.dd' (with variable size numbers). */ static PyObject * makeipaddr(struct sockaddr *addr, int addrlen) { char buf[NI_MAXHOST]; int error; error = getnameinfo(addr, addrlen, buf, sizeof(buf), NULL, 0, NI_NUMERICHOST); if (error) { set_gaierror(error); return NULL; } return PyUnicode_FromString(buf); } #ifdef USE_BLUETOOTH /* Convert a string representation of a Bluetooth address into a numeric address. Returns the length (6), or raises an exception and returns -1 if an error occurred. */ static int setbdaddr(char *name, bdaddr_t *bdaddr) { unsigned int b0, b1, b2, b3, b4, b5; char ch; int n; n = sscanf(name, "%X:%X:%X:%X:%X:%X%c", &b5, &b4, &b3, &b2, &b1, &b0, &ch); if (n == 6 && (b0 | b1 | b2 | b3 | b4 | b5) < 256) { bdaddr->b[0] = b0; bdaddr->b[1] = b1; bdaddr->b[2] = b2; bdaddr->b[3] = b3; bdaddr->b[4] = b4; bdaddr->b[5] = b5; return 6; } else { PyErr_SetString(socket_error, "bad bluetooth address"); return -1; } } /* Create a string representation of the Bluetooth address. This is always a string of the form 'XX:XX:XX:XX:XX:XX' where XX is a two digit hexadecimal value (zero padded if necessary). */ static PyObject * makebdaddr(bdaddr_t *bdaddr) { char buf[(6 * 2) + 5 + 1]; sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X", bdaddr->b[5], bdaddr->b[4], bdaddr->b[3], bdaddr->b[2], bdaddr->b[1], bdaddr->b[0]); return PyUnicode_FromString(buf); } #endif /* Create an object representing the given socket address, suitable for passing it back to bind(), connect() etc. The family field of the sockaddr structure is inspected to determine what kind of address it really is. */ /*ARGSUSED*/ static PyObject * makesockaddr(SOCKET_T sockfd, struct sockaddr *addr, size_t addrlen, int proto) { if (addrlen == 0) { /* No address -- may be recvfrom() from known socket */ Py_INCREF(Py_None); return Py_None; } switch (addr->sa_family) { case AF_INET: { struct sockaddr_in *a; PyObject *addrobj = makeipaddr(addr, sizeof(*a)); PyObject *ret = NULL; if (addrobj) { a = (struct sockaddr_in *)addr; ret = Py_BuildValue("Oi", addrobj, ntohs(a->sin_port)); Py_DECREF(addrobj); } return ret; } #if defined(AF_UNIX) case AF_UNIX: { struct sockaddr_un *a = (struct sockaddr_un *) addr; #ifdef linux if (a->sun_path[0] == 0) { /* Linux abstract namespace */ addrlen -= offsetof(struct sockaddr_un, sun_path); return PyBytes_FromStringAndSize(a->sun_path, addrlen); } else #endif /* linux */ { /* regular NULL-terminated string */ return PyUnicode_FromString(a->sun_path); } } #endif /* AF_UNIX */ #if defined(AF_NETLINK) case AF_NETLINK: { struct sockaddr_nl *a = (struct sockaddr_nl *) addr; return Py_BuildValue("II", a->nl_pid, a->nl_groups); } #endif /* AF_NETLINK */ #ifdef ENABLE_IPV6 case AF_INET6: { struct sockaddr_in6 *a; PyObject *addrobj = makeipaddr(addr, sizeof(*a)); PyObject *ret = NULL; if (addrobj) { a = (struct sockaddr_in6 *)addr; ret = Py_BuildValue("Oiii", addrobj, ntohs(a->sin6_port), a->sin6_flowinfo, a->sin6_scope_id); Py_DECREF(addrobj); } return ret; } #endif #ifdef USE_BLUETOOTH case AF_BLUETOOTH: switch (proto) { case BTPROTO_L2CAP: { struct sockaddr_l2 *a = (struct sockaddr_l2 *) addr; PyObject *addrobj = makebdaddr(&_BT_L2_MEMB(a, bdaddr)); PyObject *ret = NULL; if (addrobj) { ret = Py_BuildValue("Oi", addrobj, _BT_L2_MEMB(a, psm)); Py_DECREF(addrobj); } return ret; } case BTPROTO_RFCOMM: { struct sockaddr_rc *a = (struct sockaddr_rc *) addr; PyObject *addrobj = makebdaddr(&_BT_RC_MEMB(a, bdaddr)); PyObject *ret = NULL; if (addrobj) { ret = Py_BuildValue("Oi", addrobj, _BT_RC_MEMB(a, channel)); Py_DECREF(addrobj); } return ret; } case BTPROTO_HCI: { struct sockaddr_hci *a = (struct sockaddr_hci *) addr; #if defined(__NetBSD__) || defined(__DragonFly__) return makebdaddr(&_BT_HCI_MEMB(a, bdaddr)); #else PyObject *ret = NULL; ret = Py_BuildValue("i", _BT_HCI_MEMB(a, dev)); return ret; #endif } #if !defined(__FreeBSD__) case BTPROTO_SCO: { struct sockaddr_sco *a = (struct sockaddr_sco *) addr; return makebdaddr(&_BT_SCO_MEMB(a, bdaddr)); } #endif default: PyErr_SetString(PyExc_ValueError, "Unknown Bluetooth protocol"); return NULL; } #endif #if defined(HAVE_NETPACKET_PACKET_H) && defined(SIOCGIFNAME) case AF_PACKET: { struct sockaddr_ll *a = (struct sockaddr_ll *)addr; char *ifname = ""; struct ifreq ifr; /* need to look up interface name give index */ if (a->sll_ifindex) { ifr.ifr_ifindex = a->sll_ifindex; if (ioctl(sockfd, SIOCGIFNAME, &ifr) == 0) ifname = ifr.ifr_name; } return Py_BuildValue("shbhy#", ifname, ntohs(a->sll_protocol), a->sll_pkttype, a->sll_hatype, a->sll_addr, a->sll_halen); } #endif #ifdef HAVE_LINUX_TIPC_H case AF_TIPC: { struct sockaddr_tipc *a = (struct sockaddr_tipc *) addr; if (a->addrtype == TIPC_ADDR_NAMESEQ) { return Py_BuildValue("IIIII", a->addrtype, a->addr.nameseq.type, a->addr.nameseq.lower, a->addr.nameseq.upper, a->scope); } else if (a->addrtype == TIPC_ADDR_NAME) { return Py_BuildValue("IIIII", a->addrtype, a->addr.name.name.type, a->addr.name.name.instance, a->addr.name.name.instance, a->scope); } else if (a->addrtype == TIPC_ADDR_ID) { return Py_BuildValue("IIIII", a->addrtype, a->addr.id.node, a->addr.id.ref, 0, a->scope); } else { PyErr_SetString(PyExc_ValueError, "Invalid address type"); return NULL; } } #endif #ifdef HAVE_LINUX_CAN_H case AF_CAN: { struct sockaddr_can *a = (struct sockaddr_can *)addr; char *ifname = ""; struct ifreq ifr; /* need to look up interface name given index */ if (a->can_ifindex) { ifr.ifr_ifindex = a->can_ifindex; if (ioctl(sockfd, SIOCGIFNAME, &ifr) == 0) ifname = ifr.ifr_name; } return Py_BuildValue("O&h", PyUnicode_DecodeFSDefault, ifname, a->can_family); } #endif /* More cases here... */ default: /* If we don't know the address family, don't raise an exception -- return it as an (int, bytes) tuple. */ return Py_BuildValue("iy#", addr->sa_family, addr->sa_data, sizeof(addr->sa_data)); } } /* Parse a socket address argument according to the socket object's address family. Return 1 if the address was in the proper format, 0 of not. The address is returned through addr_ret, its length through len_ret. */ static int getsockaddrarg(PySocketSockObject *s, PyObject *args, struct sockaddr *addr_ret, int *len_ret) { switch (s->sock_family) { #if defined(AF_UNIX) case AF_UNIX: { struct sockaddr_un* addr; char *path; int len; if (!PyArg_Parse(args, "s#", &path, &len)) return 0; addr = (struct sockaddr_un*)addr_ret; #ifdef linux if (len > 0 && path[0] == 0) { /* Linux abstract namespace extension */ if (len > sizeof addr->sun_path) { PyErr_SetString(socket_error, "AF_UNIX path too long"); return 0; } } else #endif /* linux */ { /* regular NULL-terminated string */ if (len >= sizeof addr->sun_path) { PyErr_SetString(socket_error, "AF_UNIX path too long"); return 0; } addr->sun_path[len] = 0; } addr->sun_family = s->sock_family; memcpy(addr->sun_path, path, len); #if defined(PYOS_OS2) *len_ret = sizeof(*addr); #else *len_ret = len + offsetof(struct sockaddr_un, sun_path); #endif return 1; } #endif /* AF_UNIX */ #if defined(AF_NETLINK) case AF_NETLINK: { struct sockaddr_nl* addr; int pid, groups; addr = (struct sockaddr_nl *)addr_ret; if (!PyTuple_Check(args)) { PyErr_Format( PyExc_TypeError, "getsockaddrarg: " "AF_NETLINK address must be tuple, not %.500s", Py_TYPE(args)->tp_name); return 0; } if (!PyArg_ParseTuple(args, "II:getsockaddrarg", &pid, &groups)) return 0; addr->nl_family = AF_NETLINK; addr->nl_pid = pid; addr->nl_groups = groups; *len_ret = sizeof(*addr); return 1; } #endif case AF_INET: { struct sockaddr_in* addr; char *host; int port, result; if (!PyTuple_Check(args)) { PyErr_Format( PyExc_TypeError, "getsockaddrarg: " "AF_INET address must be tuple, not %.500s", Py_TYPE(args)->tp_name); return 0; } if (!PyArg_ParseTuple(args, "eti:getsockaddrarg", "idna", &host, &port)) return 0; addr=(struct sockaddr_in*)addr_ret; result = setipaddr(host, (struct sockaddr *)addr, sizeof(*addr), AF_INET); PyMem_Free(host); if (result < 0) return 0; if (port < 0 || port > 0xffff) { PyErr_SetString( PyExc_OverflowError, "getsockaddrarg: port must be 0-65535."); return 0; } addr->sin_family = AF_INET; addr->sin_port = htons((short)port); *len_ret = sizeof *addr; return 1; } #ifdef ENABLE_IPV6 case AF_INET6: { struct sockaddr_in6* addr; char *host; int port, flowinfo, scope_id, result; flowinfo = scope_id = 0; if (!PyTuple_Check(args)) { PyErr_Format( PyExc_TypeError, "getsockaddrarg: " "AF_INET6 address must be tuple, not %.500s", Py_TYPE(args)->tp_name); return 0; } if (!PyArg_ParseTuple(args, "eti|ii", "idna", &host, &port, &flowinfo, &scope_id)) { return 0; } addr = (struct sockaddr_in6*)addr_ret; result = setipaddr(host, (struct sockaddr *)addr, sizeof(*addr), AF_INET6); PyMem_Free(host); if (result < 0) return 0; if (port < 0 || port > 0xffff) { PyErr_SetString( PyExc_OverflowError, "getsockaddrarg: port must be 0-65535."); return 0; } addr->sin6_family = s->sock_family; addr->sin6_port = htons((short)port); addr->sin6_flowinfo = flowinfo; addr->sin6_scope_id = scope_id; *len_ret = sizeof *addr; return 1; } #endif #ifdef USE_BLUETOOTH case AF_BLUETOOTH: { switch (s->sock_proto) { case BTPROTO_L2CAP: { struct sockaddr_l2 *addr; char *straddr; addr = (struct sockaddr_l2 *)addr_ret; memset(addr, 0, sizeof(struct sockaddr_l2)); _BT_L2_MEMB(addr, family) = AF_BLUETOOTH; if (!PyArg_ParseTuple(args, "si", &straddr, &_BT_L2_MEMB(addr, psm))) { PyErr_SetString(socket_error, "getsockaddrarg: " "wrong format"); return 0; } if (setbdaddr(straddr, &_BT_L2_MEMB(addr, bdaddr)) < 0) return 0; *len_ret = sizeof *addr; return 1; } case BTPROTO_RFCOMM: { struct sockaddr_rc *addr; char *straddr; addr = (struct sockaddr_rc *)addr_ret; _BT_RC_MEMB(addr, family) = AF_BLUETOOTH; if (!PyArg_ParseTuple(args, "si", &straddr, &_BT_RC_MEMB(addr, channel))) { PyErr_SetString(socket_error, "getsockaddrarg: " "wrong format"); return 0; } if (setbdaddr(straddr, &_BT_RC_MEMB(addr, bdaddr)) < 0) return 0; *len_ret = sizeof *addr; return 1; } case BTPROTO_HCI: { struct sockaddr_hci *addr = (struct sockaddr_hci *)addr_ret; #if defined(__NetBSD__) || defined(__DragonFly__) char *straddr = PyBytes_AS_STRING(args); _BT_HCI_MEMB(addr, family) = AF_BLUETOOTH; if (straddr == NULL) { PyErr_SetString(socket_error, "getsockaddrarg: " "wrong format"); return 0; } if (setbdaddr(straddr, &_BT_HCI_MEMB(addr, bdaddr)) < 0) return 0; #else _BT_HCI_MEMB(addr, family) = AF_BLUETOOTH; if (!PyArg_ParseTuple(args, "i", &_BT_HCI_MEMB(addr, dev))) { PyErr_SetString(socket_error, "getsockaddrarg: " "wrong format"); return 0; } #endif *len_ret = sizeof *addr; return 1; } #if !defined(__FreeBSD__) case BTPROTO_SCO: { struct sockaddr_sco *addr; char *straddr; addr = (struct sockaddr_sco *)addr_ret; _BT_SCO_MEMB(addr, family) = AF_BLUETOOTH; if (!PyBytes_Check(args)) { PyErr_SetString(socket_error, "getsockaddrarg: " "wrong format"); return 0; } straddr = PyBytes_AS_STRING(args); if (setbdaddr(straddr, &_BT_SCO_MEMB(addr, bdaddr)) < 0) return 0; *len_ret = sizeof *addr; return 1; } #endif default: PyErr_SetString(socket_error, "getsockaddrarg: unknown Bluetooth protocol"); return 0; } } #endif #if defined(HAVE_NETPACKET_PACKET_H) && defined(SIOCGIFINDEX) case AF_PACKET: { struct sockaddr_ll* addr; struct ifreq ifr; char *interfaceName; int protoNumber; int hatype = 0; int pkttype = 0; char *haddr = NULL; unsigned int halen = 0; if (!PyTuple_Check(args)) { PyErr_Format( PyExc_TypeError, "getsockaddrarg: " "AF_PACKET address must be tuple, not %.500s", Py_TYPE(args)->tp_name); return 0; } if (!PyArg_ParseTuple(args, "si|iiy#", &interfaceName, &protoNumber, &pkttype, &hatype, &haddr, &halen)) return 0; strncpy(ifr.ifr_name, interfaceName, sizeof(ifr.ifr_name)); ifr.ifr_name[(sizeof(ifr.ifr_name))-1] = '\0'; if (ioctl(s->sock_fd, SIOCGIFINDEX, &ifr) < 0) { s->errorhandler(); return 0; } if (halen > 8) { PyErr_SetString(PyExc_ValueError, "Hardware address must be 8 bytes or less"); return 0; } if (protoNumber < 0 || protoNumber > 0xffff) { PyErr_SetString( PyExc_OverflowError, "getsockaddrarg: protoNumber must be 0-65535."); return 0; } addr = (struct sockaddr_ll*)addr_ret; addr->sll_family = AF_PACKET; addr->sll_protocol = htons((short)protoNumber); addr->sll_ifindex = ifr.ifr_ifindex; addr->sll_pkttype = pkttype; addr->sll_hatype = hatype; if (halen != 0) { memcpy(&addr->sll_addr, haddr, halen); } addr->sll_halen = halen; *len_ret = sizeof *addr; return 1; } #endif #ifdef HAVE_LINUX_TIPC_H case AF_TIPC: { unsigned int atype, v1, v2, v3; unsigned int scope = TIPC_CLUSTER_SCOPE; struct sockaddr_tipc *addr; if (!PyTuple_Check(args)) { PyErr_Format( PyExc_TypeError, "getsockaddrarg: " "AF_TIPC address must be tuple, not %.500s", Py_TYPE(args)->tp_name); return 0; } if (!PyArg_ParseTuple(args, "IIII|I;Invalid TIPC address format", &atype, &v1, &v2, &v3, &scope)) return 0; addr = (struct sockaddr_tipc *) addr_ret; memset(addr, 0, sizeof(struct sockaddr_tipc)); addr->family = AF_TIPC; addr->scope = scope; addr->addrtype = atype; if (atype == TIPC_ADDR_NAMESEQ) { addr->addr.nameseq.type = v1; addr->addr.nameseq.lower = v2; addr->addr.nameseq.upper = v3; } else if (atype == TIPC_ADDR_NAME) { addr->addr.name.name.type = v1; addr->addr.name.name.instance = v2; } else if (atype == TIPC_ADDR_ID) { addr->addr.id.node = v1; addr->addr.id.ref = v2; } else { /* Shouldn't happen */ PyErr_SetString(PyExc_TypeError, "Invalid address type"); return 0; } *len_ret = sizeof(*addr); return 1; } #endif #ifdef HAVE_LINUX_CAN_H case AF_CAN: switch (s->sock_proto) { case CAN_RAW: { struct sockaddr_can *addr; PyObject *interfaceName; struct ifreq ifr; addr = (struct sockaddr_can *)addr_ret; Py_ssize_t len; if (!PyArg_ParseTuple(args, "O&", PyUnicode_FSConverter, &interfaceName)) return 0; len = PyBytes_GET_SIZE(interfaceName); if (len == 0) { ifr.ifr_ifindex = 0; } else if (len < sizeof(ifr.ifr_name)) { strcpy(ifr.ifr_name, PyBytes_AS_STRING(interfaceName)); if (ioctl(s->sock_fd, SIOCGIFINDEX, &ifr) < 0) { s->errorhandler(); Py_DECREF(interfaceName); return 0; } } else { PyErr_SetString(socket_error, "AF_CAN interface name too long"); Py_DECREF(interfaceName); return 0; } addr->can_family = AF_CAN; addr->can_ifindex = ifr.ifr_ifindex; *len_ret = sizeof(*addr); Py_DECREF(interfaceName); return 1; } default: PyErr_SetString(socket_error, "getsockaddrarg: unsupported CAN protocol"); return 0; } #endif /* More cases here... */ default: PyErr_SetString(socket_error, "getsockaddrarg: bad family"); return 0; } } /* Get the address length according to the socket object's address family. Return 1 if the family is known, 0 otherwise. The length is returned through len_ret. */ static int getsockaddrlen(PySocketSockObject *s, socklen_t *len_ret) { switch (s->sock_family) { #if defined(AF_UNIX) case AF_UNIX: { *len_ret = sizeof (struct sockaddr_un); return 1; } #endif /* AF_UNIX */ #if defined(AF_NETLINK) case AF_NETLINK: { *len_ret = sizeof (struct sockaddr_nl); return 1; } #endif case AF_INET: { *len_ret = sizeof (struct sockaddr_in); return 1; } #ifdef ENABLE_IPV6 case AF_INET6: { *len_ret = sizeof (struct sockaddr_in6); return 1; } #endif #ifdef USE_BLUETOOTH case AF_BLUETOOTH: { switch(s->sock_proto) { case BTPROTO_L2CAP: *len_ret = sizeof (struct sockaddr_l2); return 1; case BTPROTO_RFCOMM: *len_ret = sizeof (struct sockaddr_rc); return 1; case BTPROTO_HCI: *len_ret = sizeof (struct sockaddr_hci); return 1; #if !defined(__FreeBSD__) case BTPROTO_SCO: *len_ret = sizeof (struct sockaddr_sco); return 1; #endif default: PyErr_SetString(socket_error, "getsockaddrlen: " "unknown BT protocol"); return 0; } } #endif #ifdef HAVE_NETPACKET_PACKET_H case AF_PACKET: { *len_ret = sizeof (struct sockaddr_ll); return 1; } #endif #ifdef HAVE_LINUX_TIPC_H case AF_TIPC: { *len_ret = sizeof (struct sockaddr_tipc); return 1; } #endif #ifdef HAVE_LINUX_CAN_H case AF_CAN: { *len_ret = sizeof (struct sockaddr_can); return 1; } #endif /* More cases here... */ default: PyErr_SetString(socket_error, "getsockaddrlen: bad family"); return 0; } } /* Support functions for the sendmsg() and recvmsg[_into]() methods. Currently, these methods are only compiled if the RFC 2292/3542 CMSG_LEN() macro is available. Older systems seem to have used sizeof(struct cmsghdr) + (length) where CMSG_LEN() is used now, so it may be possible to define CMSG_LEN() that way if it's not provided. Some architectures might need extra padding after the cmsghdr, however, and CMSG_LEN() would have to take account of this. */ #ifdef CMSG_LEN /* If length is in range, set *result to CMSG_LEN(length) and return true; otherwise, return false. */ static int get_CMSG_LEN(size_t length, size_t *result) { size_t tmp; if (length > (SOCKLEN_T_LIMIT - CMSG_LEN(0))) return 0; tmp = CMSG_LEN(length); if (tmp > SOCKLEN_T_LIMIT || tmp < length) return 0; *result = tmp; return 1; } #ifdef CMSG_SPACE /* If length is in range, set *result to CMSG_SPACE(length) and return true; otherwise, return false. */ static int get_CMSG_SPACE(size_t length, size_t *result) { size_t tmp; /* Use CMSG_SPACE(1) here in order to take account of the padding necessary before *and* after the data. */ if (length > (SOCKLEN_T_LIMIT - CMSG_SPACE(1))) return 0; tmp = CMSG_SPACE(length); if (tmp > SOCKLEN_T_LIMIT || tmp < length) return 0; *result = tmp; return 1; } #endif /* Return true iff msg->msg_controllen is valid, cmsgh is a valid pointer in msg->msg_control with at least "space" bytes after it, and its cmsg_len member inside the buffer. */ static int cmsg_min_space(struct msghdr *msg, struct cmsghdr *cmsgh, size_t space) { size_t cmsg_offset; static const size_t cmsg_len_end = (offsetof(struct cmsghdr, cmsg_len) + sizeof(cmsgh->cmsg_len)); /* Note that POSIX allows msg_controllen to be of signed type. */ if (cmsgh == NULL || msg->msg_control == NULL || msg->msg_controllen < 0) return 0; if (space < cmsg_len_end) space = cmsg_len_end; cmsg_offset = (char *)cmsgh - (char *)msg->msg_control; return (cmsg_offset <= (size_t)-1 - space && cmsg_offset + space <= msg->msg_controllen); } /* If pointer CMSG_DATA(cmsgh) is in buffer msg->msg_control, set *space to number of bytes following it in the buffer and return true; otherwise, return false. Assumes cmsgh, msg->msg_control and msg->msg_controllen are valid. */ static int get_cmsg_data_space(struct msghdr *msg, struct cmsghdr *cmsgh, size_t *space) { size_t data_offset; char *data_ptr; if ((data_ptr = (char *)CMSG_DATA(cmsgh)) == NULL) return 0; data_offset = data_ptr - (char *)msg->msg_control; if (data_offset > msg->msg_controllen) return 0; *space = msg->msg_controllen - data_offset; return 1; } /* If cmsgh is invalid or not contained in the buffer pointed to by msg->msg_control, return -1. If cmsgh is valid and its associated data is entirely contained in the buffer, set *data_len to the length of the associated data and return 0. If only part of the associated data is contained in the buffer but cmsgh is otherwise valid, set *data_len to the length contained in the buffer and return 1. */ static int get_cmsg_data_len(struct msghdr *msg, struct cmsghdr *cmsgh, size_t *data_len) { size_t space, cmsg_data_len; if (!cmsg_min_space(msg, cmsgh, CMSG_LEN(0)) || cmsgh->cmsg_len < CMSG_LEN(0)) return -1; cmsg_data_len = cmsgh->cmsg_len - CMSG_LEN(0); if (!get_cmsg_data_space(msg, cmsgh, &space)) return -1; if (space >= cmsg_data_len) { *data_len = cmsg_data_len; return 0; } *data_len = space; return 1; } #endif /* CMSG_LEN */ /* s._accept() -> (fd, address) */ static PyObject * sock_accept(PySocketSockObject *s) { sock_addr_t addrbuf; SOCKET_T newfd = INVALID_SOCKET; socklen_t addrlen; PyObject *sock = NULL; PyObject *addr = NULL; PyObject *res = NULL; int timeout; if (!getsockaddrlen(s, &addrlen)) return NULL; memset(&addrbuf, 0, addrlen); if (!IS_SELECTABLE(s)) return select_error(); BEGIN_SELECT_LOOP(s) Py_BEGIN_ALLOW_THREADS timeout = internal_select_ex(s, 0, interval); if (!timeout) { newfd = accept(s->sock_fd, SAS2SA(&addrbuf), &addrlen); } Py_END_ALLOW_THREADS if (timeout == 1) { PyErr_SetString(socket_timeout, "timed out"); return NULL; } END_SELECT_LOOP(s) if (newfd == INVALID_SOCKET) return s->errorhandler(); sock = PyLong_FromSocket_t(newfd); if (sock == NULL) { SOCKETCLOSE(newfd); goto finally; } addr = makesockaddr(s->sock_fd, SAS2SA(&addrbuf), addrlen, s->sock_proto); if (addr == NULL) goto finally; res = PyTuple_Pack(2, sock, addr); finally: Py_XDECREF(sock); Py_XDECREF(addr); return res; } PyDoc_STRVAR(accept_doc, "_accept() -> (integer, address info)\n\ \n\ Wait for an incoming connection. Return a new socket file descriptor\n\ representing the connection, and the address of the client.\n\ For IP sockets, the address info is a pair (hostaddr, port)."); /* s.setblocking(flag) method. Argument: False -- non-blocking mode; same as settimeout(0) True -- blocking mode; same as settimeout(None) */ static PyObject * sock_setblocking(PySocketSockObject *s, PyObject *arg) { int block; block = PyLong_AsLong(arg); if (block == -1 && PyErr_Occurred()) return NULL; s->sock_timeout = block ? -1.0 : 0.0; internal_setblocking(s, block); Py_INCREF(Py_None); return Py_None; } PyDoc_STRVAR(setblocking_doc, "setblocking(flag)\n\ \n\ Set the socket to blocking (flag is true) or non-blocking (false).\n\ setblocking(True) is equivalent to settimeout(None);\n\ setblocking(False) is equivalent to settimeout(0.0)."); /* s.settimeout(timeout) method. Argument: None -- no timeout, blocking mode; same as setblocking(True) 0.0 -- non-blocking mode; same as setblocking(False) > 0 -- timeout mode; operations time out after timeout seconds < 0 -- illegal; raises an exception */ static PyObject * sock_settimeout(PySocketSockObject *s, PyObject *arg) { double timeout; if (arg == Py_None) timeout = -1.0; else { timeout = PyFloat_AsDouble(arg); if (timeout < 0.0) { if (!PyErr_Occurred()) PyErr_SetString(PyExc_ValueError, "Timeout value out of range"); return NULL; } } s->sock_timeout = timeout; internal_setblocking(s, timeout < 0.0); Py_INCREF(Py_None); return Py_None; } PyDoc_STRVAR(settimeout_doc, "settimeout(timeout)\n\ \n\ Set a timeout on socket operations. 'timeout' can be a float,\n\ giving in seconds, or None. Setting a timeout of None disables\n\ the timeout feature and is equivalent to setblocking(1).\n\ Setting a timeout of zero is the same as setblocking(0)."); /* s.gettimeout() method. Returns the timeout associated with a socket. */ static PyObject * sock_gettimeout(PySocketSockObject *s) { if (s->sock_timeout < 0.0) { Py_INCREF(Py_None); return Py_None; } else return PyFloat_FromDouble(s->sock_timeout); } PyDoc_STRVAR(gettimeout_doc, "gettimeout() -> timeout\n\ \n\ Returns the timeout in seconds (float) associated with socket \n\ operations. A timeout of None indicates that timeouts on socket \n\ operations are disabled."); /* s.setsockopt() method. With an integer third argument, sets an integer option. With a string third argument, sets an option from a buffer; use optional built-in module 'struct' to encode the string. */ static PyObject * sock_setsockopt(PySocketSockObject *s, PyObject *args) { int level; int optname; int res; char *buf; int buflen; int flag; if (PyArg_ParseTuple(args, "iii:setsockopt", &level, &optname, &flag)) { buf = (char *) &flag; buflen = sizeof flag; } else { PyErr_Clear(); if (!PyArg_ParseTuple(args, "iiy#:setsockopt", &level, &optname, &buf, &buflen)) return NULL; } res = setsockopt(s->sock_fd, level, optname, (void *)buf, buflen); if (res < 0) return s->errorhandler(); Py_INCREF(Py_None); return Py_None; } PyDoc_STRVAR(setsockopt_doc, "setsockopt(level, option, value)\n\ \n\ Set a socket option. See the Unix manual for level and option.\n\ The value argument can either be an integer or a string."); /* s.getsockopt() method. With two arguments, retrieves an integer option. With a third integer argument, retrieves a string buffer of that size; use optional built-in module 'struct' to decode the string. */ static PyObject * sock_getsockopt(PySocketSockObject *s, PyObject *args) { int level; int optname; int res; PyObject *buf; socklen_t buflen = 0; if (!PyArg_ParseTuple(args, "ii|i:getsockopt", &level, &optname, &buflen)) return NULL; if (buflen == 0) { int flag = 0; socklen_t flagsize = sizeof flag; res = getsockopt(s->sock_fd, level, optname, (void *)&flag, &flagsize); if (res < 0) return s->errorhandler(); return PyLong_FromLong(flag); } #ifdef __VMS /* socklen_t is unsigned so no negative test is needed, test buflen == 0 is previously done */ if (buflen > 1024) { #else if (buflen <= 0 || buflen > 1024) { #endif PyErr_SetString(socket_error, "getsockopt buflen out of range"); return NULL; } buf = PyBytes_FromStringAndSize((char *)NULL, buflen); if (buf == NULL) return NULL; res = getsockopt(s->sock_fd, level, optname, (void *)PyBytes_AS_STRING(buf), &buflen); if (res < 0) { Py_DECREF(buf); return s->errorhandler(); } _PyBytes_Resize(&buf, buflen); return buf; } PyDoc_STRVAR(getsockopt_doc, "getsockopt(level, option[, buffersize]) -> value\n\ \n\ Get a socket option. See the Unix manual for level and option.\n\ If a nonzero buffersize argument is given, the return value is a\n\ string of that length; otherwise it is an integer."); /* s.bind(sockaddr) method */ static PyObject * sock_bind(PySocketSockObject *s, PyObject *addro) { sock_addr_t addrbuf; int addrlen; int res; if (!getsockaddrarg(s, addro, SAS2SA(&addrbuf), &addrlen)) return NULL; Py_BEGIN_ALLOW_THREADS res = bind(s->sock_fd, SAS2SA(&addrbuf), addrlen); Py_END_ALLOW_THREADS if (res < 0) return s->errorhandler(); Py_INCREF(Py_None); return Py_None; } PyDoc_STRVAR(bind_doc, "bind(address)\n\ \n\ Bind the socket to a local address. For IP sockets, the address is a\n\ pair (host, port); the host must refer to the local host. For raw packet\n\ sockets the address is a tuple (ifname, proto [,pkttype [,hatype]])"); /* s.close() method. Set the file descriptor to -1 so operations tried subsequently will surely fail. */ static PyObject * sock_close(PySocketSockObject *s) { SOCKET_T fd; if ((fd = s->sock_fd) != -1) { s->sock_fd = -1; Py_BEGIN_ALLOW_THREADS (void) SOCKETCLOSE(fd); Py_END_ALLOW_THREADS } Py_INCREF(Py_None); return Py_None; } PyDoc_STRVAR(close_doc, "close()\n\ \n\ Close the socket. It cannot be used after this call."); static PyObject * sock_detach(PySocketSockObject *s) { SOCKET_T fd = s->sock_fd; s->sock_fd = -1; return PyLong_FromSocket_t(fd); } PyDoc_STRVAR(detach_doc, "detach()\n\ \n\ Close the socket object without closing the underlying file descriptor.\ The object cannot be used after this call, but the file descriptor\ can be reused for other purposes. The file descriptor is returned."); static int internal_connect(PySocketSockObject *s, struct sockaddr *addr, int addrlen, int *timeoutp) { int res, timeout; timeout = 0; res = connect(s->sock_fd, addr, addrlen); #ifdef MS_WINDOWS if (s->sock_timeout > 0.0) { if (res < 0 && WSAGetLastError() == WSAEWOULDBLOCK && IS_SELECTABLE(s)) { /* This is a mess. Best solution: trust select */ fd_set fds; fd_set fds_exc; struct timeval tv; tv.tv_sec = (int)s->sock_timeout; tv.tv_usec = (int)((s->sock_timeout - tv.tv_sec) * 1e6); FD_ZERO(&fds); FD_SET(s->sock_fd, &fds); FD_ZERO(&fds_exc); FD_SET(s->sock_fd, &fds_exc); res = select(Py_SAFE_DOWNCAST(s->sock_fd+1, SOCKET_T, int), NULL, &fds, &fds_exc, &tv); if (res == 0) { res = WSAEWOULDBLOCK; timeout = 1; } else if (res > 0) { if (FD_ISSET(s->sock_fd, &fds)) /* The socket is in the writable set - this means connected */ res = 0; else { /* As per MS docs, we need to call getsockopt() to get the underlying error */ int res_size = sizeof res; /* It must be in the exception set */ assert(FD_ISSET(s->sock_fd, &fds_exc)); if (0 == getsockopt(s->sock_fd, SOL_SOCKET, SO_ERROR, (char *)&res, &res_size)) /* getsockopt also clears WSAGetLastError, so reset it back. */ WSASetLastError(res); else res = WSAGetLastError(); } } /* else if (res < 0) an error occurred */ } } if (res < 0) res = WSAGetLastError(); #else if (s->sock_timeout > 0.0) { if (res < 0 && errno == EINPROGRESS && IS_SELECTABLE(s)) { timeout = internal_select(s, 1); if (timeout == 0) { /* Bug #1019808: in case of an EINPROGRESS, use getsockopt(SO_ERROR) to get the real error. */ socklen_t res_size = sizeof res; (void)getsockopt(s->sock_fd, SOL_SOCKET, SO_ERROR, &res, &res_size); if (res == EISCONN) res = 0; errno = res; } else if (timeout == -1) { res = errno; /* had error */ } else res = EWOULDBLOCK; /* timed out */ } } if (res < 0) res = errno; #endif *timeoutp = timeout; return res; } /* s.connect(sockaddr) method */ static PyObject * sock_connect(PySocketSockObject *s, PyObject *addro) { sock_addr_t addrbuf; int addrlen; int res; int timeout; if (!getsockaddrarg(s, addro, SAS2SA(&addrbuf), &addrlen)) return NULL; Py_BEGIN_ALLOW_THREADS res = internal_connect(s, SAS2SA(&addrbuf), addrlen, &timeout); Py_END_ALLOW_THREADS if (timeout == 1) { PyErr_SetString(socket_timeout, "timed out"); return NULL; } if (res != 0) return s->errorhandler(); Py_INCREF(Py_None); return Py_None; } PyDoc_STRVAR(connect_doc, "connect(address)\n\ \n\ Connect the socket to a remote address. For IP sockets, the address\n\ is a pair (host, port)."); /* s.connect_ex(sockaddr) method */ static PyObject * sock_connect_ex(PySocketSockObject *s, PyObject *addro) { sock_addr_t addrbuf; int addrlen; int res; int timeout; if (!getsockaddrarg(s, addro, SAS2SA(&addrbuf), &addrlen)) return NULL; Py_BEGIN_ALLOW_THREADS res = internal_connect(s, SAS2SA(&addrbuf), addrlen, &timeout); Py_END_ALLOW_THREADS /* Signals are not errors (though they may raise exceptions). Adapted from PyErr_SetFromErrnoWithFilenameObject(). */ #ifdef EINTR if (res == EINTR && PyErr_CheckSignals()) return NULL; #endif return PyLong_FromLong((long) res); } PyDoc_STRVAR(connect_ex_doc, "connect_ex(address) -> errno\n\ \n\ This is like connect(address), but returns an error code (the errno value)\n\ instead of raising an exception when an error occurs."); /* s.fileno() method */ static PyObject * sock_fileno(PySocketSockObject *s) { return PyLong_FromSocket_t(s->sock_fd); } PyDoc_STRVAR(fileno_doc, "fileno() -> integer\n\ \n\ Return the integer file descriptor of the socket."); /* s.getsockname() method */ static PyObject * sock_getsockname(PySocketSockObject *s) { sock_addr_t addrbuf; int res; socklen_t addrlen; if (!getsockaddrlen(s, &addrlen)) return NULL; memset(&addrbuf, 0, addrlen); Py_BEGIN_ALLOW_THREADS res = getsockname(s->sock_fd, SAS2SA(&addrbuf), &addrlen); Py_END_ALLOW_THREADS if (res < 0) return s->errorhandler(); return makesockaddr(s->sock_fd, SAS2SA(&addrbuf), addrlen, s->sock_proto); } PyDoc_STRVAR(getsockname_doc, "getsockname() -> address info\n\ \n\ Return the address of the local endpoint. For IP sockets, the address\n\ info is a pair (hostaddr, port)."); #ifdef HAVE_GETPEERNAME /* Cray APP doesn't have this :-( */ /* s.getpeername() method */ static PyObject * sock_getpeername(PySocketSockObject *s) { sock_addr_t addrbuf; int res; socklen_t addrlen; if (!getsockaddrlen(s, &addrlen)) return NULL; memset(&addrbuf, 0, addrlen); Py_BEGIN_ALLOW_THREADS res = getpeername(s->sock_fd, SAS2SA(&addrbuf), &addrlen); Py_END_ALLOW_THREADS if (res < 0) return s->errorhandler(); return makesockaddr(s->sock_fd, SAS2SA(&addrbuf), addrlen, s->sock_proto); } PyDoc_STRVAR(getpeername_doc, "getpeername() -> address info\n\ \n\ Return the address of the remote endpoint. For IP sockets, the address\n\ info is a pair (hostaddr, port)."); #endif /* HAVE_GETPEERNAME */ /* s.listen(n) method */ static PyObject * sock_listen(PySocketSockObject *s, PyObject *arg) { int backlog; int res; backlog = PyLong_AsLong(arg); if (backlog == -1 && PyErr_Occurred()) return NULL; Py_BEGIN_ALLOW_THREADS /* To avoid problems on systems that don't allow a negative backlog * (which doesn't make sense anyway) we force a minimum value of 0. */ if (backlog < 0) backlog = 0; res = listen(s->sock_fd, backlog); Py_END_ALLOW_THREADS if (res < 0) return s->errorhandler(); Py_INCREF(Py_None); return Py_None; } PyDoc_STRVAR(listen_doc, "listen(backlog)\n\ \n\ Enable a server to accept connections. The backlog argument must be at\n\ least 0 (if it is lower, it is set to 0); it specifies the number of\n\ unaccepted connections that the system will allow before refusing new\n\ connections."); /* * This is the guts of the recv() and recv_into() methods, which reads into a * char buffer. If you have any inc/dec ref to do to the objects that contain * the buffer, do it in the caller. This function returns the number of bytes * successfully read. If there was an error, it returns -1. Note that it is * also possible that we return a number of bytes smaller than the request * bytes. */ static Py_ssize_t sock_recv_guts(PySocketSockObject *s, char* cbuf, Py_ssize_t len, int flags) { Py_ssize_t outlen = -1; int timeout; #ifdef __VMS int remaining; char *read_buf; #endif if (!IS_SELECTABLE(s)) { select_error(); return -1; } if (len == 0) { /* If 0 bytes were requested, do nothing. */ return 0; } #ifndef __VMS BEGIN_SELECT_LOOP(s) Py_BEGIN_ALLOW_THREADS timeout = internal_select_ex(s, 0, interval); if (!timeout) outlen = recv(s->sock_fd, cbuf, len, flags); Py_END_ALLOW_THREADS if (timeout == 1) { PyErr_SetString(socket_timeout, "timed out"); return -1; } END_SELECT_LOOP(s) if (outlen < 0) { /* Note: the call to errorhandler() ALWAYS indirectly returned NULL, so ignore its return value */ s->errorhandler(); return -1; } #else read_buf = cbuf; remaining = len; while (remaining != 0) { unsigned int segment; int nread = -1; segment = remaining /SEGMENT_SIZE; if (segment != 0) { segment = SEGMENT_SIZE; } else { segment = remaining; } BEGIN_SELECT_LOOP(s) Py_BEGIN_ALLOW_THREADS timeout = internal_select_ex(s, 0, interval); if (!timeout) nread = recv(s->sock_fd, read_buf, segment, flags); Py_END_ALLOW_THREADS if (timeout == 1) { PyErr_SetString(socket_timeout, "timed out"); return -1; } END_SELECT_LOOP(s) if (nread < 0) { s->errorhandler(); return -1; } if (nread != remaining) { read_buf += nread; break; } remaining -= segment; read_buf += segment; } outlen = read_buf - cbuf; #endif /* !__VMS */ return outlen; } /* s.recv(nbytes [,flags]) method */ static PyObject * sock_recv(PySocketSockObject *s, PyObject *args) { Py_ssize_t recvlen, outlen; int flags = 0; PyObject *buf; if (!PyArg_ParseTuple(args, "n|i:recv", &recvlen, &flags)) return NULL; if (recvlen < 0) { PyErr_SetString(PyExc_ValueError, "negative buffersize in recv"); return NULL; } /* Allocate a new string. */ buf = PyBytes_FromStringAndSize((char *) 0, recvlen); if (buf == NULL) return NULL; /* Call the guts */ outlen = sock_recv_guts(s, PyBytes_AS_STRING(buf), recvlen, flags); if (outlen < 0) { /* An error occurred, release the string and return an error. */ Py_DECREF(buf); return NULL; } if (outlen != recvlen) { /* We did not read as many bytes as we anticipated, resize the string if possible and be successful. */ _PyBytes_Resize(&buf, outlen); } return buf; } PyDoc_STRVAR(recv_doc, "recv(buffersize[, flags]) -> data\n\ \n\ Receive up to buffersize bytes from the socket. For the optional flags\n\ argument, see the Unix manual. When no data is available, block until\n\ at least one byte is available or until the remote end is closed. When\n\ the remote end is closed and all data is read, return the empty string."); /* s.recv_into(buffer, [nbytes [,flags]]) method */ static PyObject* sock_recv_into(PySocketSockObject *s, PyObject *args, PyObject *kwds) { static char *kwlist[] = {"buffer", "nbytes", "flags", 0}; int flags = 0; Py_buffer pbuf; char *buf; Py_ssize_t buflen, readlen, recvlen = 0; /* Get the buffer's memory */ if (!PyArg_ParseTupleAndKeywords(args, kwds, "w*|ni:recv_into", kwlist, &pbuf, &recvlen, &flags)) return NULL; buf = pbuf.buf; buflen = pbuf.len; if (recvlen < 0) { PyBuffer_Release(&pbuf); PyErr_SetString(PyExc_ValueError, "negative buffersize in recv_into"); return NULL; } if (recvlen == 0) { /* If nbytes was not specified, use the buffer's length */ recvlen = buflen; } /* Check if the buffer is large enough */ if (buflen < recvlen) { PyBuffer_Release(&pbuf); PyErr_SetString(PyExc_ValueError, "buffer too small for requested bytes"); return NULL; } /* Call the guts */ readlen = sock_recv_guts(s, buf, recvlen, flags); if (readlen < 0) { /* Return an error. */ PyBuffer_Release(&pbuf); return NULL; } PyBuffer_Release(&pbuf); /* Return the number of bytes read. Note that we do not do anything special here in the case that readlen < recvlen. */ return PyLong_FromSsize_t(readlen); } PyDoc_STRVAR(recv_into_doc, "recv_into(buffer, [nbytes[, flags]]) -> nbytes_read\n\ \n\ A version of recv() that stores its data into a buffer rather than creating \n\ a new string. Receive up to buffersize bytes from the socket. If buffersize \n\ is not specified (or 0), receive up to the size available in the given buffer.\n\ \n\ See recv() for documentation about the flags."); /* * This is the guts of the recvfrom() and recvfrom_into() methods, which reads * into a char buffer. If you have any inc/def ref to do to the objects that * contain the buffer, do it in the caller. This function returns the number * of bytes successfully read. If there was an error, it returns -1. Note * that it is also possible that we return a number of bytes smaller than the * request bytes. * * 'addr' is a return value for the address object. Note that you must decref * it yourself. */ static Py_ssize_t sock_recvfrom_guts(PySocketSockObject *s, char* cbuf, Py_ssize_t len, int flags, PyObject** addr) { sock_addr_t addrbuf; int timeout; Py_ssize_t n = -1; socklen_t addrlen; *addr = NULL; if (!getsockaddrlen(s, &addrlen)) return -1; if (!IS_SELECTABLE(s)) { select_error(); return -1; } BEGIN_SELECT_LOOP(s) Py_BEGIN_ALLOW_THREADS memset(&addrbuf, 0, addrlen); timeout = internal_select_ex(s, 0, interval); if (!timeout) { #ifndef MS_WINDOWS #if defined(PYOS_OS2) && !defined(PYCC_GCC) n = recvfrom(s->sock_fd, cbuf, len, flags, SAS2SA(&addrbuf), &addrlen); #else n = recvfrom(s->sock_fd, cbuf, len, flags, (void *) &addrbuf, &addrlen); #endif #else n = recvfrom(s->sock_fd, cbuf, len, flags, SAS2SA(&addrbuf), &addrlen); #endif } Py_END_ALLOW_THREADS if (timeout == 1) { PyErr_SetString(socket_timeout, "timed out"); return -1; } END_SELECT_LOOP(s) if (n < 0) { s->errorhandler(); return -1; } if (!(*addr = makesockaddr(s->sock_fd, SAS2SA(&addrbuf), addrlen, s->sock_proto))) return -1; return n; } /* s.recvfrom(nbytes [,flags]) method */ static PyObject * sock_recvfrom(PySocketSockObject *s, PyObject *args) { PyObject *buf = NULL; PyObject *addr = NULL; PyObject *ret = NULL; int flags = 0; Py_ssize_t recvlen, outlen; if (!PyArg_ParseTuple(args, "n|i:recvfrom", &recvlen, &flags)) return NULL; if (recvlen < 0) { PyErr_SetString(PyExc_ValueError, "negative buffersize in recvfrom"); return NULL; } buf = PyBytes_FromStringAndSize((char *) 0, recvlen); if (buf == NULL) return NULL; outlen = sock_recvfrom_guts(s, PyBytes_AS_STRING(buf), recvlen, flags, &addr); if (outlen < 0) { goto finally; } if (outlen != recvlen) { /* We did not read as many bytes as we anticipated, resize the string if possible and be successful. */ if (_PyBytes_Resize(&buf, outlen) < 0) /* Oopsy, not so successful after all. */ goto finally; } ret = PyTuple_Pack(2, buf, addr); finally: Py_XDECREF(buf); Py_XDECREF(addr); return ret; } PyDoc_STRVAR(recvfrom_doc, "recvfrom(buffersize[, flags]) -> (data, address info)\n\ \n\ Like recv(buffersize, flags) but also return the sender's address info."); /* s.recvfrom_into(buffer[, nbytes [,flags]]) method */ static PyObject * sock_recvfrom_into(PySocketSockObject *s, PyObject *args, PyObject* kwds) { static char *kwlist[] = {"buffer", "nbytes", "flags", 0}; int flags = 0; Py_buffer pbuf; char *buf; Py_ssize_t readlen, buflen, recvlen = 0; PyObject *addr = NULL; if (!PyArg_ParseTupleAndKeywords(args, kwds, "w*|ni:recvfrom_into", kwlist, &pbuf, &recvlen, &flags)) return NULL; buf = pbuf.buf; buflen = pbuf.len; assert(buf != 0 && buflen > 0); if (recvlen < 0) { PyBuffer_Release(&pbuf); PyErr_SetString(PyExc_ValueError, "negative buffersize in recvfrom_into"); return NULL; } if (recvlen == 0) { /* If nbytes was not specified, use the buffer's length */ recvlen = buflen; } readlen = sock_recvfrom_guts(s, buf, recvlen, flags, &addr); if (readlen < 0) { PyBuffer_Release(&pbuf); /* Return an error */ Py_XDECREF(addr); return NULL; } PyBuffer_Release(&pbuf); /* Return the number of bytes read and the address. Note that we do not do anything special here in the case that readlen < recvlen. */ return Py_BuildValue("nN", readlen, addr); } PyDoc_STRVAR(recvfrom_into_doc, "recvfrom_into(buffer[, nbytes[, flags]]) -> (nbytes, address info)\n\ \n\ Like recv_into(buffer[, nbytes[, flags]]) but also return the sender's address info."); /* The sendmsg() and recvmsg[_into]() methods require a working CMSG_LEN(). See the comment near get_CMSG_LEN(). */ #ifdef CMSG_LEN /* * Call recvmsg() with the supplied iovec structures, flags, and * ancillary data buffer size (controllen). Returns the tuple return * value for recvmsg() or recvmsg_into(), with the first item provided * by the supplied makeval() function. makeval() will be called with * the length read and makeval_data as arguments, and must return a * new reference (which will be decrefed if there is a subsequent * error). On error, closes any file descriptors received via * SCM_RIGHTS. */ static PyObject * sock_recvmsg_guts(PySocketSockObject *s, struct iovec *iov, int iovlen, int flags, Py_ssize_t controllen, PyObject *(*makeval)(ssize_t, void *), void *makeval_data) { ssize_t bytes_received = -1; int timeout; sock_addr_t addrbuf; socklen_t addrbuflen; struct msghdr msg = {0}; PyObject *cmsg_list = NULL, *retval = NULL; void *controlbuf = NULL; struct cmsghdr *cmsgh; size_t cmsgdatalen = 0; int cmsg_status; /* XXX: POSIX says that msg_name and msg_namelen "shall be ignored" when the socket is connected (Linux fills them in anyway for AF_UNIX sockets at least). Normally msg_namelen seems to be set to 0 if there's no address, but try to initialize msg_name to something that won't be mistaken for a real address if that doesn't happen. */ if (!getsockaddrlen(s, &addrbuflen)) return NULL; memset(&addrbuf, 0, addrbuflen); SAS2SA(&addrbuf)->sa_family = AF_UNSPEC; if (controllen < 0 || controllen > SOCKLEN_T_LIMIT) { PyErr_SetString(PyExc_ValueError, "invalid ancillary data buffer length"); return NULL; } if (controllen > 0 && (controlbuf = PyMem_Malloc(controllen)) == NULL) return PyErr_NoMemory(); /* Make the system call. */ if (!IS_SELECTABLE(s)) { select_error(); goto finally; } BEGIN_SELECT_LOOP(s) Py_BEGIN_ALLOW_THREADS; msg.msg_name = SAS2SA(&addrbuf); msg.msg_namelen = addrbuflen; msg.msg_iov = iov; msg.msg_iovlen = iovlen; msg.msg_control = controlbuf; msg.msg_controllen = controllen; timeout = internal_select_ex(s, 0, interval); if (!timeout) bytes_received = recvmsg(s->sock_fd, &msg, flags); Py_END_ALLOW_THREADS; if (timeout == 1) { PyErr_SetString(socket_timeout, "timed out"); goto finally; } END_SELECT_LOOP(s) if (bytes_received < 0) { s->errorhandler(); goto finally; } /* Make list of (level, type, data) tuples from control messages. */ if ((cmsg_list = PyList_New(0)) == NULL) goto err_closefds; /* Check for empty ancillary data as old CMSG_FIRSTHDR() implementations didn't do so. */ for (cmsgh = ((msg.msg_controllen > 0) ? CMSG_FIRSTHDR(&msg) : NULL); cmsgh != NULL; cmsgh = CMSG_NXTHDR(&msg, cmsgh)) { PyObject *bytes, *tuple; int tmp; cmsg_status = get_cmsg_data_len(&msg, cmsgh, &cmsgdatalen); if (cmsg_status != 0) { if (PyErr_WarnEx(PyExc_RuntimeWarning, "received malformed or improperly-truncated " "ancillary data", 1) == -1) goto err_closefds; } if (cmsg_status < 0) break; if (cmsgdatalen > PY_SSIZE_T_MAX) { PyErr_SetString(socket_error, "control message too long"); goto err_closefds; } bytes = PyBytes_FromStringAndSize((char *)CMSG_DATA(cmsgh), cmsgdatalen); tuple = Py_BuildValue("iiN", (int)cmsgh->cmsg_level, (int)cmsgh->cmsg_type, bytes); if (tuple == NULL) goto err_closefds; tmp = PyList_Append(cmsg_list, tuple); Py_DECREF(tuple); if (tmp != 0) goto err_closefds; if (cmsg_status != 0) break; } retval = Py_BuildValue("NOiN", (*makeval)(bytes_received, makeval_data), cmsg_list, (int)msg.msg_flags, makesockaddr(s->sock_fd, SAS2SA(&addrbuf), ((msg.msg_namelen > addrbuflen) ? addrbuflen : msg.msg_namelen), s->sock_proto)); if (retval == NULL) goto err_closefds; finally: Py_XDECREF(cmsg_list); PyMem_Free(controlbuf); return retval; err_closefds: #ifdef SCM_RIGHTS /* Close all descriptors coming from SCM_RIGHTS, so they don't leak. */ for (cmsgh = ((msg.msg_controllen > 0) ? CMSG_FIRSTHDR(&msg) : NULL); cmsgh != NULL; cmsgh = CMSG_NXTHDR(&msg, cmsgh)) { cmsg_status = get_cmsg_data_len(&msg, cmsgh, &cmsgdatalen); if (cmsg_status < 0) break; if (cmsgh->cmsg_level == SOL_SOCKET && cmsgh->cmsg_type == SCM_RIGHTS) { size_t numfds; int *fdp; numfds = cmsgdatalen / sizeof(int); fdp = (int *)CMSG_DATA(cmsgh); while (numfds-- > 0) close(*fdp++); } if (cmsg_status != 0) break; } #endif /* SCM_RIGHTS */ goto finally; } static PyObject * makeval_recvmsg(ssize_t received, void *data) { PyObject **buf = data; if (received < PyBytes_GET_SIZE(*buf)) _PyBytes_Resize(buf, received); Py_XINCREF(*buf); return *buf; } /* s.recvmsg(bufsize[, ancbufsize[, flags]]) method */ static PyObject * sock_recvmsg(PySocketSockObject *s, PyObject *args) { Py_ssize_t bufsize, ancbufsize = 0; int flags = 0; struct iovec iov; PyObject *buf = NULL, *retval = NULL; if (!PyArg_ParseTuple(args, "n|ni:recvmsg", &bufsize, &ancbufsize, &flags)) return NULL; if (bufsize < 0) { PyErr_SetString(PyExc_ValueError, "negative buffer size in recvmsg()"); return NULL; } if ((buf = PyBytes_FromStringAndSize(NULL, bufsize)) == NULL) return NULL; iov.iov_base = PyBytes_AS_STRING(buf); iov.iov_len = bufsize; /* Note that we're passing a pointer to *our pointer* to the bytes object here (&buf); makeval_recvmsg() may incref the object, or deallocate it and set our pointer to NULL. */ retval = sock_recvmsg_guts(s, &iov, 1, flags, ancbufsize, &makeval_recvmsg, &buf); Py_XDECREF(buf); return retval; } PyDoc_STRVAR(recvmsg_doc, "recvmsg(bufsize[, ancbufsize[, flags]]) -> (data, ancdata, msg_flags, address)\n\ \n\ Receive normal data (up to bufsize bytes) and ancillary data from the\n\ socket. The ancbufsize argument sets the size in bytes of the\n\ internal buffer used to receive the ancillary data; it defaults to 0,\n\ meaning that no ancillary data will be received. Appropriate buffer\n\ sizes for ancillary data can be calculated using CMSG_SPACE() or\n\ CMSG_LEN(), and items which do not fit into the buffer might be\n\ truncated or discarded. The flags argument defaults to 0 and has the\n\ same meaning as for recv().\n\ \n\ The return value is a 4-tuple: (data, ancdata, msg_flags, address).\n\ The data item is a bytes object holding the non-ancillary data\n\ received. The ancdata item is a list of zero or more tuples\n\ (cmsg_level, cmsg_type, cmsg_data) representing the ancillary data\n\ (control messages) received: cmsg_level and cmsg_type are integers\n\ specifying the protocol level and protocol-specific type respectively,\n\ and cmsg_data is a bytes object holding the associated data. The\n\ msg_flags item is the bitwise OR of various flags indicating\n\ conditions on the received message; see your system documentation for\n\ details. If the receiving socket is unconnected, address is the\n\ address of the sending socket, if available; otherwise, its value is\n\ unspecified.\n\ \n\ If recvmsg() raises an exception after the system call returns, it\n\ will first attempt to close any file descriptors received via the\n\ SCM_RIGHTS mechanism."); static PyObject * makeval_recvmsg_into(ssize_t received, void *data) { return PyLong_FromSsize_t(received); } /* s.recvmsg_into(buffers[, ancbufsize[, flags]]) method */ static PyObject * sock_recvmsg_into(PySocketSockObject *s, PyObject *args) { Py_ssize_t ancbufsize = 0; int flags = 0; struct iovec *iovs = NULL; Py_ssize_t i, nitems, nbufs = 0; Py_buffer *bufs = NULL; PyObject *buffers_arg, *fast, *retval = NULL; if (!PyArg_ParseTuple(args, "O|ni:recvmsg_into", &buffers_arg, &ancbufsize, &flags)) return NULL; if ((fast = PySequence_Fast(buffers_arg, "recvmsg_into() argument 1 must be an " "iterable")) == NULL) return NULL; nitems = PySequence_Fast_GET_SIZE(fast); if (nitems > INT_MAX) { PyErr_SetString(socket_error, "recvmsg_into() argument 1 is too long"); goto finally; } /* Fill in an iovec for each item, and save the Py_buffer structs to release afterwards. */ if (nitems > 0 && ((iovs = PyMem_New(struct iovec, nitems)) == NULL || (bufs = PyMem_New(Py_buffer, nitems)) == NULL)) { PyErr_NoMemory(); goto finally; } for (; nbufs < nitems; nbufs++) { if (!PyArg_Parse(PySequence_Fast_GET_ITEM(fast, nbufs), "w*;recvmsg_into() argument 1 must be an iterable " "of single-segment read-write buffers", &bufs[nbufs])) goto finally; iovs[nbufs].iov_base = bufs[nbufs].buf; iovs[nbufs].iov_len = bufs[nbufs].len; } retval = sock_recvmsg_guts(s, iovs, nitems, flags, ancbufsize, &makeval_recvmsg_into, NULL); finally: for (i = 0; i < nbufs; i++) PyBuffer_Release(&bufs[i]); PyMem_Free(bufs); PyMem_Free(iovs); Py_DECREF(fast); return retval; } PyDoc_STRVAR(recvmsg_into_doc, "recvmsg_into(buffers[, ancbufsize[, flags]]) -> (nbytes, ancdata, msg_flags, address)\n\ \n\ Receive normal data and ancillary data from the socket, scattering the\n\ non-ancillary data into a series of buffers. The buffers argument\n\ must be an iterable of objects that export writable buffers\n\ (e.g. bytearray objects); these will be filled with successive chunks\n\ of the non-ancillary data until it has all been written or there are\n\ no more buffers. The ancbufsize argument sets the size in bytes of\n\ the internal buffer used to receive the ancillary data; it defaults to\n\ 0, meaning that no ancillary data will be received. Appropriate\n\ buffer sizes for ancillary data can be calculated using CMSG_SPACE()\n\ or CMSG_LEN(), and items which do not fit into the buffer might be\n\ truncated or discarded. The flags argument defaults to 0 and has the\n\ same meaning as for recv().\n\ \n\ The return value is a 4-tuple: (nbytes, ancdata, msg_flags, address).\n\ The nbytes item is the total number of bytes of non-ancillary data\n\ written into the buffers. The ancdata item is a list of zero or more\n\ tuples (cmsg_level, cmsg_type, cmsg_data) representing the ancillary\n\ data (control messages) received: cmsg_level and cmsg_type are\n\ integers specifying the protocol level and protocol-specific type\n\ respectively, and cmsg_data is a bytes object holding the associated\n\ data. The msg_flags item is the bitwise OR of various flags\n\ indicating conditions on the received message; see your system\n\ documentation for details. If the receiving socket is unconnected,\n\ address is the address of the sending socket, if available; otherwise,\n\ its value is unspecified.\n\ \n\ If recvmsg_into() raises an exception after the system call returns,\n\ it will first attempt to close any file descriptors received via the\n\ SCM_RIGHTS mechanism."); #endif /* CMSG_LEN */ /* s.send(data [,flags]) method */ static PyObject * sock_send(PySocketSockObject *s, PyObject *args) { char *buf; Py_ssize_t len, n = -1; int flags = 0, timeout; Py_buffer pbuf; if (!PyArg_ParseTuple(args, "y*|i:send", &pbuf, &flags)) return NULL; if (!IS_SELECTABLE(s)) { PyBuffer_Release(&pbuf); return select_error(); } buf = pbuf.buf; len = pbuf.len; BEGIN_SELECT_LOOP(s) Py_BEGIN_ALLOW_THREADS timeout = internal_select_ex(s, 1, interval); if (!timeout) #ifdef __VMS n = sendsegmented(s->sock_fd, buf, len, flags); #else n = send(s->sock_fd, buf, len, flags); #endif Py_END_ALLOW_THREADS if (timeout == 1) { PyBuffer_Release(&pbuf); PyErr_SetString(socket_timeout, "timed out"); return NULL; } END_SELECT_LOOP(s) PyBuffer_Release(&pbuf); if (n < 0) return s->errorhandler(); return PyLong_FromSsize_t(n); } PyDoc_STRVAR(send_doc, "send(data[, flags]) -> count\n\ \n\ Send a data string to the socket. For the optional flags\n\ argument, see the Unix manual. Return the number of bytes\n\ sent; this may be less than len(data) if the network is busy."); /* s.sendall(data [,flags]) method */ static PyObject * sock_sendall(PySocketSockObject *s, PyObject *args) { char *buf; Py_ssize_t len, n = -1; int flags = 0, timeout, saved_errno; Py_buffer pbuf; if (!PyArg_ParseTuple(args, "y*|i:sendall", &pbuf, &flags)) return NULL; buf = pbuf.buf; len = pbuf.len; if (!IS_SELECTABLE(s)) { PyBuffer_Release(&pbuf); return select_error(); } do { Py_BEGIN_ALLOW_THREADS timeout = internal_select(s, 1); n = -1; if (!timeout) { #ifdef __VMS n = sendsegmented(s->sock_fd, buf, len, flags); #else n = send(s->sock_fd, buf, len, flags); #endif } Py_END_ALLOW_THREADS if (timeout == 1) { PyBuffer_Release(&pbuf); PyErr_SetString(socket_timeout, "timed out"); return NULL; } /* PyErr_CheckSignals() might change errno */ saved_errno = errno; /* We must run our signal handlers before looping again. send() can return a successful partial write when it is interrupted, so we can't restrict ourselves to EINTR. */ if (PyErr_CheckSignals()) { PyBuffer_Release(&pbuf); return NULL; } if (n < 0) { /* If interrupted, try again */ if (saved_errno == EINTR) continue; else break; } buf += n; len -= n; } while (len > 0); PyBuffer_Release(&pbuf); if (n < 0) return s->errorhandler(); Py_INCREF(Py_None); return Py_None; } PyDoc_STRVAR(sendall_doc, "sendall(data[, flags])\n\ \n\ Send a data string to the socket. For the optional flags\n\ argument, see the Unix manual. This calls send() repeatedly\n\ until all data is sent. If an error occurs, it's impossible\n\ to tell how much data has been sent."); /* s.sendto(data, [flags,] sockaddr) method */ static PyObject * sock_sendto(PySocketSockObject *s, PyObject *args) { Py_buffer pbuf; PyObject *addro; char *buf; Py_ssize_t len, arglen; sock_addr_t addrbuf; int addrlen, n = -1, flags, timeout; flags = 0; arglen = PyTuple_Size(args); switch (arglen) { case 2: PyArg_ParseTuple(args, "y*O:sendto", &pbuf, &addro); break; case 3: PyArg_ParseTuple(args, "y*iO:sendto", &pbuf, &flags, &addro); break; default: PyErr_Format(PyExc_TypeError, "sendto() takes 2 or 3 arguments (%d given)", arglen); return NULL; } if (PyErr_Occurred()) return NULL; buf = pbuf.buf; len = pbuf.len; if (!IS_SELECTABLE(s)) { PyBuffer_Release(&pbuf); return select_error(); } if (!getsockaddrarg(s, addro, SAS2SA(&addrbuf), &addrlen)) { PyBuffer_Release(&pbuf); return NULL; } BEGIN_SELECT_LOOP(s) Py_BEGIN_ALLOW_THREADS timeout = internal_select_ex(s, 1, interval); if (!timeout) n = sendto(s->sock_fd, buf, len, flags, SAS2SA(&addrbuf), addrlen); Py_END_ALLOW_THREADS if (timeout == 1) { PyBuffer_Release(&pbuf); PyErr_SetString(socket_timeout, "timed out"); return NULL; } END_SELECT_LOOP(s) PyBuffer_Release(&pbuf); if (n < 0) return s->errorhandler(); return PyLong_FromSsize_t(n); } PyDoc_STRVAR(sendto_doc, "sendto(data[, flags], address) -> count\n\ \n\ Like send(data, flags) but allows specifying the destination address.\n\ For IP sockets, the address is a pair (hostaddr, port)."); /* The sendmsg() and recvmsg[_into]() methods require a working CMSG_LEN(). See the comment near get_CMSG_LEN(). */ #ifdef CMSG_LEN /* s.sendmsg(buffers[, ancdata[, flags[, address]]]) method */ static PyObject * sock_sendmsg(PySocketSockObject *s, PyObject *args) { Py_ssize_t i, ndataparts, ndatabufs = 0, ncmsgs, ncmsgbufs = 0; Py_buffer *databufs = NULL; struct iovec *iovs = NULL; sock_addr_t addrbuf; struct msghdr msg = {0}; struct cmsginfo { int level; int type; Py_buffer data; } *cmsgs = NULL; void *controlbuf = NULL; size_t controllen, controllen_last; ssize_t bytes_sent = -1; int addrlen, timeout, flags = 0; PyObject *data_arg, *cmsg_arg = NULL, *addr_arg = NULL, *data_fast = NULL, *cmsg_fast = NULL, *retval = NULL; if (!PyArg_ParseTuple(args, "O|OiO:sendmsg", &data_arg, &cmsg_arg, &flags, &addr_arg)) return NULL; /* Parse destination address. */ if (addr_arg != NULL && addr_arg != Py_None) { if (!getsockaddrarg(s, addr_arg, SAS2SA(&addrbuf), &addrlen)) goto finally; msg.msg_name = &addrbuf; msg.msg_namelen = addrlen; } /* Fill in an iovec for each message part, and save the Py_buffer structs to release afterwards. */ if ((data_fast = PySequence_Fast(data_arg, "sendmsg() argument 1 must be an " "iterable")) == NULL) goto finally; ndataparts = PySequence_Fast_GET_SIZE(data_fast); if (ndataparts > INT_MAX) { PyErr_SetString(socket_error, "sendmsg() argument 1 is too long"); goto finally; } msg.msg_iovlen = ndataparts; if (ndataparts > 0 && ((msg.msg_iov = iovs = PyMem_New(struct iovec, ndataparts)) == NULL || (databufs = PyMem_New(Py_buffer, ndataparts)) == NULL)) { PyErr_NoMemory(); goto finally; } for (; ndatabufs < ndataparts; ndatabufs++) { if (!PyArg_Parse(PySequence_Fast_GET_ITEM(data_fast, ndatabufs), "y*;sendmsg() argument 1 must be an iterable of " "buffer-compatible objects", &databufs[ndatabufs])) goto finally; iovs[ndatabufs].iov_base = databufs[ndatabufs].buf; iovs[ndatabufs].iov_len = databufs[ndatabufs].len; } if (cmsg_arg == NULL) ncmsgs = 0; else { if ((cmsg_fast = PySequence_Fast(cmsg_arg, "sendmsg() argument 2 must be an " "iterable")) == NULL) goto finally; ncmsgs = PySequence_Fast_GET_SIZE(cmsg_fast); } #ifndef CMSG_SPACE if (ncmsgs > 1) { PyErr_SetString(socket_error, "sending multiple control messages is not supported " "on this system"); goto finally; } #endif /* Save level, type and Py_buffer for each control message, and calculate total size. */ if (ncmsgs > 0 && (cmsgs = PyMem_New(struct cmsginfo, ncmsgs)) == NULL) { PyErr_NoMemory(); goto finally; } controllen = controllen_last = 0; while (ncmsgbufs < ncmsgs) { size_t bufsize, space; if (!PyArg_Parse(PySequence_Fast_GET_ITEM(cmsg_fast, ncmsgbufs), "(iiy*):[sendmsg() ancillary data items]", &cmsgs[ncmsgbufs].level, &cmsgs[ncmsgbufs].type, &cmsgs[ncmsgbufs].data)) goto finally; bufsize = cmsgs[ncmsgbufs++].data.len; #ifdef CMSG_SPACE if (!get_CMSG_SPACE(bufsize, &space)) { #else if (!get_CMSG_LEN(bufsize, &space)) { #endif PyErr_SetString(socket_error, "ancillary data item too large"); goto finally; } controllen += space; if (controllen > SOCKLEN_T_LIMIT || controllen < controllen_last) { PyErr_SetString(socket_error, "too much ancillary data"); goto finally; } controllen_last = controllen; } /* Construct ancillary data block from control message info. */ if (ncmsgbufs > 0) { struct cmsghdr *cmsgh = NULL; if ((msg.msg_control = controlbuf = PyMem_Malloc(controllen)) == NULL) { PyErr_NoMemory(); goto finally; } msg.msg_controllen = controllen; /* Need to zero out the buffer as a workaround for glibc's CMSG_NXTHDR() implementation. After getting the pointer to the next header, it checks its (uninitialized) cmsg_len member to see if the "message" fits in the buffer, and returns NULL if it doesn't. Zero-filling the buffer ensures that that doesn't happen. */ memset(controlbuf, 0, controllen); for (i = 0; i < ncmsgbufs; i++) { size_t msg_len, data_len = cmsgs[i].data.len; int enough_space = 0; cmsgh = (i == 0) ? CMSG_FIRSTHDR(&msg) : CMSG_NXTHDR(&msg, cmsgh); if (cmsgh == NULL) { PyErr_Format(PyExc_RuntimeError, "unexpected NULL result from %s()", (i == 0) ? "CMSG_FIRSTHDR" : "CMSG_NXTHDR"); goto finally; } if (!get_CMSG_LEN(data_len, &msg_len)) { PyErr_SetString(PyExc_RuntimeError, "item size out of range for CMSG_LEN()"); goto finally; } if (cmsg_min_space(&msg, cmsgh, msg_len)) { size_t space; cmsgh->cmsg_len = msg_len; if (get_cmsg_data_space(&msg, cmsgh, &space)) enough_space = (space >= data_len); } if (!enough_space) { PyErr_SetString(PyExc_RuntimeError, "ancillary data does not fit in calculated " "space"); goto finally; } cmsgh->cmsg_level = cmsgs[i].level; cmsgh->cmsg_type = cmsgs[i].type; memcpy(CMSG_DATA(cmsgh), cmsgs[i].data.buf, data_len); } } /* Make the system call. */ if (!IS_SELECTABLE(s)) { select_error(); goto finally; } BEGIN_SELECT_LOOP(s) Py_BEGIN_ALLOW_THREADS; timeout = internal_select_ex(s, 1, interval); if (!timeout) bytes_sent = sendmsg(s->sock_fd, &msg, flags); Py_END_ALLOW_THREADS; if (timeout == 1) { PyErr_SetString(socket_timeout, "timed out"); goto finally; } END_SELECT_LOOP(s) if (bytes_sent < 0) { s->errorhandler(); goto finally; } retval = PyLong_FromSsize_t(bytes_sent); finally: PyMem_Free(controlbuf); for (i = 0; i < ncmsgbufs; i++) PyBuffer_Release(&cmsgs[i].data); PyMem_Free(cmsgs); Py_XDECREF(cmsg_fast); for (i = 0; i < ndatabufs; i++) PyBuffer_Release(&databufs[i]); PyMem_Free(databufs); PyMem_Free(iovs); Py_XDECREF(data_fast); return retval; } PyDoc_STRVAR(sendmsg_doc, "sendmsg(buffers[, ancdata[, flags[, address]]]) -> count\n\ \n\ Send normal and ancillary data to the socket, gathering the\n\ non-ancillary data from a series of buffers and concatenating it into\n\ a single message. The buffers argument specifies the non-ancillary\n\ data as an iterable of buffer-compatible objects (e.g. bytes objects).\n\ The ancdata argument specifies the ancillary data (control messages)\n\ as an iterable of zero or more tuples (cmsg_level, cmsg_type,\n\ cmsg_data), where cmsg_level and cmsg_type are integers specifying the\n\ protocol level and protocol-specific type respectively, and cmsg_data\n\ is a buffer-compatible object holding the associated data. The flags\n\ argument defaults to 0 and has the same meaning as for send(). If\n\ address is supplied and not None, it sets a destination address for\n\ the message. The return value is the number of bytes of non-ancillary\n\ data sent."); #endif /* CMSG_LEN */ /* s.shutdown(how) method */ static PyObject * sock_shutdown(PySocketSockObject *s, PyObject *arg) { int how; int res; how = PyLong_AsLong(arg); if (how == -1 && PyErr_Occurred()) return NULL; Py_BEGIN_ALLOW_THREADS res = shutdown(s->sock_fd, how); Py_END_ALLOW_THREADS if (res < 0) return s->errorhandler(); Py_INCREF(Py_None); return Py_None; } PyDoc_STRVAR(shutdown_doc, "shutdown(flag)\n\ \n\ Shut down the reading side of the socket (flag == SHUT_RD), the writing side\n\ of the socket (flag == SHUT_WR), or both ends (flag == SHUT_RDWR)."); #if defined(MS_WINDOWS) && defined(SIO_RCVALL) static PyObject* sock_ioctl(PySocketSockObject *s, PyObject *arg) { unsigned long cmd = SIO_RCVALL; PyObject *argO; DWORD recv; if (!PyArg_ParseTuple(arg, "kO:ioctl", &cmd, &argO)) return NULL; switch (cmd) { case SIO_RCVALL: { unsigned int option = RCVALL_ON; if (!PyArg_ParseTuple(arg, "kI:ioctl", &cmd, &option)) return NULL; if (WSAIoctl(s->sock_fd, cmd, &option, sizeof(option), NULL, 0, &recv, NULL, NULL) == SOCKET_ERROR) { return set_error(); } return PyLong_FromUnsignedLong(recv); } case SIO_KEEPALIVE_VALS: { struct tcp_keepalive ka; if (!PyArg_ParseTuple(arg, "k(kkk):ioctl", &cmd, &ka.onoff, &ka.keepalivetime, &ka.keepaliveinterval)) return NULL; if (WSAIoctl(s->sock_fd, cmd, &ka, sizeof(ka), NULL, 0, &recv, NULL, NULL) == SOCKET_ERROR) { return set_error(); } return PyLong_FromUnsignedLong(recv); } default: PyErr_Format(PyExc_ValueError, "invalid ioctl command %d", cmd); return NULL; } } PyDoc_STRVAR(sock_ioctl_doc, "ioctl(cmd, option) -> long\n\ \n\ Control the socket with WSAIoctl syscall. Currently supported 'cmd' values are\n\ SIO_RCVALL: 'option' must be one of the socket.RCVALL_* constants.\n\ SIO_KEEPALIVE_VALS: 'option' is a tuple of (onoff, timeout, interval)."); #endif /* List of methods for socket objects */ static PyMethodDef sock_methods[] = { {"_accept", (PyCFunction)sock_accept, METH_NOARGS, accept_doc}, {"bind", (PyCFunction)sock_bind, METH_O, bind_doc}, {"close", (PyCFunction)sock_close, METH_NOARGS, close_doc}, {"connect", (PyCFunction)sock_connect, METH_O, connect_doc}, {"connect_ex", (PyCFunction)sock_connect_ex, METH_O, connect_ex_doc}, {"detach", (PyCFunction)sock_detach, METH_NOARGS, detach_doc}, {"fileno", (PyCFunction)sock_fileno, METH_NOARGS, fileno_doc}, #ifdef HAVE_GETPEERNAME {"getpeername", (PyCFunction)sock_getpeername, METH_NOARGS, getpeername_doc}, #endif {"getsockname", (PyCFunction)sock_getsockname, METH_NOARGS, getsockname_doc}, {"getsockopt", (PyCFunction)sock_getsockopt, METH_VARARGS, getsockopt_doc}, #if defined(MS_WINDOWS) && defined(SIO_RCVALL) {"ioctl", (PyCFunction)sock_ioctl, METH_VARARGS, sock_ioctl_doc}, #endif {"listen", (PyCFunction)sock_listen, METH_O, listen_doc}, {"recv", (PyCFunction)sock_recv, METH_VARARGS, recv_doc}, {"recv_into", (PyCFunction)sock_recv_into, METH_VARARGS | METH_KEYWORDS, recv_into_doc}, {"recvfrom", (PyCFunction)sock_recvfrom, METH_VARARGS, recvfrom_doc}, {"recvfrom_into", (PyCFunction)sock_recvfrom_into, METH_VARARGS | METH_KEYWORDS, recvfrom_into_doc}, {"send", (PyCFunction)sock_send, METH_VARARGS, send_doc}, {"sendall", (PyCFunction)sock_sendall, METH_VARARGS, sendall_doc}, {"sendto", (PyCFunction)sock_sendto, METH_VARARGS, sendto_doc}, {"setblocking", (PyCFunction)sock_setblocking, METH_O, setblocking_doc}, {"settimeout", (PyCFunction)sock_settimeout, METH_O, settimeout_doc}, {"gettimeout", (PyCFunction)sock_gettimeout, METH_NOARGS, gettimeout_doc}, {"setsockopt", (PyCFunction)sock_setsockopt, METH_VARARGS, setsockopt_doc}, {"shutdown", (PyCFunction)sock_shutdown, METH_O, shutdown_doc}, #ifdef CMSG_LEN {"recvmsg", (PyCFunction)sock_recvmsg, METH_VARARGS, recvmsg_doc}, {"recvmsg_into", (PyCFunction)sock_recvmsg_into, METH_VARARGS, recvmsg_into_doc,}, {"sendmsg", (PyCFunction)sock_sendmsg, METH_VARARGS, sendmsg_doc}, #endif {NULL, NULL} /* sentinel */ }; /* SockObject members */ static PyMemberDef sock_memberlist[] = { {"family", T_INT, offsetof(PySocketSockObject, sock_family), READONLY, "the socket family"}, {"type", T_INT, offsetof(PySocketSockObject, sock_type), READONLY, "the socket type"}, {"proto", T_INT, offsetof(PySocketSockObject, sock_proto), READONLY, "the socket protocol"}, {"timeout", T_DOUBLE, offsetof(PySocketSockObject, sock_timeout), READONLY, "the socket timeout"}, {0}, }; /* Deallocate a socket object in response to the last Py_DECREF(). First close the file description. */ static void sock_dealloc(PySocketSockObject *s) { if (s->sock_fd != -1) { PyObject *exc, *val, *tb; Py_ssize_t old_refcount = Py_REFCNT(s); ++Py_REFCNT(s); PyErr_Fetch(&exc, &val, &tb); if (PyErr_WarnFormat(PyExc_ResourceWarning, 1, "unclosed %R", s)) /* Spurious errors can appear at shutdown */ if (PyErr_ExceptionMatches(PyExc_Warning)) PyErr_WriteUnraisable((PyObject *) s); PyErr_Restore(exc, val, tb); (void) SOCKETCLOSE(s->sock_fd); Py_REFCNT(s) = old_refcount; } Py_TYPE(s)->tp_free((PyObject *)s); } static PyObject * sock_repr(PySocketSockObject *s) { #if SIZEOF_SOCKET_T > SIZEOF_LONG if (s->sock_fd > LONG_MAX) { /* this can occur on Win64, and actually there is a special ugly printf formatter for decimal pointer length integer printing, only bother if necessary*/ PyErr_SetString(PyExc_OverflowError, "no printf formatter to display " "the socket descriptor in decimal"); return NULL; } #endif return PyUnicode_FromFormat( "", (long)s->sock_fd, s->sock_family, s->sock_type, s->sock_proto); } /* Create a new, uninitialized socket object. */ static PyObject * sock_new(PyTypeObject *type, PyObject *args, PyObject *kwds) { PyObject *new; new = type->tp_alloc(type, 0); if (new != NULL) { ((PySocketSockObject *)new)->sock_fd = -1; ((PySocketSockObject *)new)->sock_timeout = -1.0; ((PySocketSockObject *)new)->errorhandler = &set_error; } return new; } /* Initialize a new socket object. */ /*ARGSUSED*/ static int sock_initobj(PyObject *self, PyObject *args, PyObject *kwds) { PySocketSockObject *s = (PySocketSockObject *)self; PyObject *fdobj = NULL; SOCKET_T fd = INVALID_SOCKET; int family = AF_INET, type = SOCK_STREAM, proto = 0; static char *keywords[] = {"family", "type", "proto", "fileno", 0}; if (!PyArg_ParseTupleAndKeywords(args, kwds, "|iiiO:socket", keywords, &family, &type, &proto, &fdobj)) return -1; if (fdobj != NULL && fdobj != Py_None) { fd = PyLong_AsSocket_t(fdobj); if (fd == (SOCKET_T)(-1) && PyErr_Occurred()) return -1; if (fd == INVALID_SOCKET) { PyErr_SetString(PyExc_ValueError, "can't use invalid socket value"); return -1; } } else { Py_BEGIN_ALLOW_THREADS fd = socket(family, type, proto); Py_END_ALLOW_THREADS if (fd == INVALID_SOCKET) { set_error(); return -1; } } init_sockobject(s, fd, family, type, proto); return 0; } /* Type object for socket objects. */ static PyTypeObject sock_type = { PyVarObject_HEAD_INIT(0, 0) /* Must fill in type value later */ "_socket.socket", /* tp_name */ sizeof(PySocketSockObject), /* tp_basicsize */ 0, /* tp_itemsize */ (destructor)sock_dealloc, /* tp_dealloc */ 0, /* tp_print */ 0, /* tp_getattr */ 0, /* tp_setattr */ 0, /* tp_reserved */ (reprfunc)sock_repr, /* tp_repr */ 0, /* tp_as_number */ 0, /* tp_as_sequence */ 0, /* tp_as_mapping */ 0, /* tp_hash */ 0, /* tp_call */ 0, /* tp_str */ PyObject_GenericGetAttr, /* tp_getattro */ 0, /* tp_setattro */ 0, /* tp_as_buffer */ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */ sock_doc, /* tp_doc */ 0, /* tp_traverse */ 0, /* tp_clear */ 0, /* tp_richcompare */ 0, /* tp_weaklistoffset */ 0, /* tp_iter */ 0, /* tp_iternext */ sock_methods, /* tp_methods */ sock_memberlist, /* tp_members */ 0, /* tp_getset */ 0, /* tp_base */ 0, /* tp_dict */ 0, /* tp_descr_get */ 0, /* tp_descr_set */ 0, /* tp_dictoffset */ sock_initobj, /* tp_init */ PyType_GenericAlloc, /* tp_alloc */ sock_new, /* tp_new */ PyObject_Del, /* tp_free */ }; /* Python interface to gethostname(). */ /*ARGSUSED*/ static PyObject * socket_gethostname(PyObject *self, PyObject *unused) { #ifdef MS_WINDOWS /* Don't use winsock's gethostname, as this returns the ANSI version of the hostname, whereas we need a Unicode string. Otherwise, gethostname apparently also returns the DNS name. */ wchar_t buf[MAX_COMPUTERNAME_LENGTH + 1]; DWORD size = Py_ARRAY_LENGTH(buf); PyObject *result; if (!GetComputerNameExW(ComputerNamePhysicalDnsHostname, buf, &size)) { if (GetLastError() == ERROR_MORE_DATA) { /* MSDN says this may occur "because DNS allows longer names */ if (size == 0) /* XXX: I'm not sure how to handle this */ return PyUnicode_FromUnicode(NULL, 0); result = PyUnicode_FromUnicode(NULL, size - 1); if (!result) return NULL; if (GetComputerNameExW(ComputerNamePhysicalDnsHostname, PyUnicode_AS_UNICODE(result), &size)) return result; Py_DECREF(result); } return PyErr_SetExcFromWindowsErr(PyExc_WindowsError, GetLastError()); } return PyUnicode_FromUnicode(buf, size); #else char buf[1024]; int res; Py_BEGIN_ALLOW_THREADS res = gethostname(buf, (int) sizeof buf - 1); Py_END_ALLOW_THREADS if (res < 0) return set_error(); buf[sizeof buf - 1] = '\0'; return PyUnicode_FromString(buf); #endif } PyDoc_STRVAR(gethostname_doc, "gethostname() -> string\n\ \n\ Return the current host name."); #ifdef HAVE_SETHOSTNAME PyDoc_STRVAR(sethostname_doc, "sethostname(name)\n\n\ Sets the hostname to name."); static PyObject * socket_sethostname(PyObject *self, PyObject *args) { PyObject *hnobj; Py_buffer buf; int res, flag = 0; if (!PyArg_ParseTuple(args, "S:sethostname", &hnobj)) { PyErr_Clear(); if (!PyArg_ParseTuple(args, "O&:sethostname", PyUnicode_FSConverter, &hnobj)) return NULL; flag = 1; } res = PyObject_GetBuffer(hnobj, &buf, PyBUF_SIMPLE); if (!res) { res = sethostname(buf.buf, buf.len); PyBuffer_Release(&buf); } if (flag) Py_DECREF(hnobj); if (res) return set_error(); Py_RETURN_NONE; } #endif /* Python interface to gethostbyname(name). */ /*ARGSUSED*/ static PyObject * socket_gethostbyname(PyObject *self, PyObject *args) { char *name; sock_addr_t addrbuf; PyObject *ret = NULL; if (!PyArg_ParseTuple(args, "et:gethostbyname", "idna", &name)) return NULL; if (setipaddr(name, SAS2SA(&addrbuf), sizeof(addrbuf), AF_INET) < 0) goto finally; ret = makeipaddr(SAS2SA(&addrbuf), sizeof(struct sockaddr_in)); finally: PyMem_Free(name); return ret; } PyDoc_STRVAR(gethostbyname_doc, "gethostbyname(host) -> address\n\ \n\ Return the IP address (a string of the form '255.255.255.255') for a host."); /* Convenience function common to gethostbyname_ex and gethostbyaddr */ static PyObject * gethost_common(struct hostent *h, struct sockaddr *addr, int alen, int af) { char **pch; PyObject *rtn_tuple = (PyObject *)NULL; PyObject *name_list = (PyObject *)NULL; PyObject *addr_list = (PyObject *)NULL; PyObject *tmp; if (h == NULL) { /* Let's get real error message to return */ set_herror(h_errno); return NULL; } if (h->h_addrtype != af) { /* Let's get real error message to return */ PyErr_SetString(socket_error, (char *)strerror(EAFNOSUPPORT)); return NULL; } switch (af) { case AF_INET: if (alen < sizeof(struct sockaddr_in)) return NULL; break; #ifdef ENABLE_IPV6 case AF_INET6: if (alen < sizeof(struct sockaddr_in6)) return NULL; break; #endif } if ((name_list = PyList_New(0)) == NULL) goto err; if ((addr_list = PyList_New(0)) == NULL) goto err; /* SF #1511317: h_aliases can be NULL */ if (h->h_aliases) { for (pch = h->h_aliases; *pch != NULL; pch++) { int status; tmp = PyUnicode_FromString(*pch); if (tmp == NULL) goto err; status = PyList_Append(name_list, tmp); Py_DECREF(tmp); if (status) goto err; } } for (pch = h->h_addr_list; *pch != NULL; pch++) { int status; switch (af) { case AF_INET: { struct sockaddr_in sin; memset(&sin, 0, sizeof(sin)); sin.sin_family = af; #ifdef HAVE_SOCKADDR_SA_LEN sin.sin_len = sizeof(sin); #endif memcpy(&sin.sin_addr, *pch, sizeof(sin.sin_addr)); tmp = makeipaddr((struct sockaddr *)&sin, sizeof(sin)); if (pch == h->h_addr_list && alen >= sizeof(sin)) memcpy((char *) addr, &sin, sizeof(sin)); break; } #ifdef ENABLE_IPV6 case AF_INET6: { struct sockaddr_in6 sin6; memset(&sin6, 0, sizeof(sin6)); sin6.sin6_family = af; #ifdef HAVE_SOCKADDR_SA_LEN sin6.sin6_len = sizeof(sin6); #endif memcpy(&sin6.sin6_addr, *pch, sizeof(sin6.sin6_addr)); tmp = makeipaddr((struct sockaddr *)&sin6, sizeof(sin6)); if (pch == h->h_addr_list && alen >= sizeof(sin6)) memcpy((char *) addr, &sin6, sizeof(sin6)); break; } #endif default: /* can't happen */ PyErr_SetString(socket_error, "unsupported address family"); return NULL; } if (tmp == NULL) goto err; status = PyList_Append(addr_list, tmp); Py_DECREF(tmp); if (status) goto err; } rtn_tuple = Py_BuildValue("sOO", h->h_name, name_list, addr_list); err: Py_XDECREF(name_list); Py_XDECREF(addr_list); return rtn_tuple; } /* Python interface to gethostbyname_ex(name). */ /*ARGSUSED*/ static PyObject * socket_gethostbyname_ex(PyObject *self, PyObject *args) { char *name; struct hostent *h; #ifdef ENABLE_IPV6 struct sockaddr_storage addr; #else struct sockaddr_in addr; #endif struct sockaddr *sa; PyObject *ret = NULL; #ifdef HAVE_GETHOSTBYNAME_R struct hostent hp_allocated; #ifdef HAVE_GETHOSTBYNAME_R_3_ARG struct hostent_data data; #else char buf[16384]; int buf_len = (sizeof buf) - 1; int errnop; #endif #if defined(HAVE_GETHOSTBYNAME_R_3_ARG) || defined(HAVE_GETHOSTBYNAME_R_6_ARG) int result; #endif #endif /* HAVE_GETHOSTBYNAME_R */ if (!PyArg_ParseTuple(args, "et:gethostbyname_ex", "idna", &name)) return NULL; if (setipaddr(name, (struct sockaddr *)&addr, sizeof(addr), AF_INET) < 0) goto finally; Py_BEGIN_ALLOW_THREADS #ifdef HAVE_GETHOSTBYNAME_R #if defined(HAVE_GETHOSTBYNAME_R_6_ARG) result = gethostbyname_r(name, &hp_allocated, buf, buf_len, &h, &errnop); #elif defined(HAVE_GETHOSTBYNAME_R_5_ARG) h = gethostbyname_r(name, &hp_allocated, buf, buf_len, &errnop); #else /* HAVE_GETHOSTBYNAME_R_3_ARG */ memset((void *) &data, '\0', sizeof(data)); result = gethostbyname_r(name, &hp_allocated, &data); h = (result != 0) ? NULL : &hp_allocated; #endif #else /* not HAVE_GETHOSTBYNAME_R */ #ifdef USE_GETHOSTBYNAME_LOCK PyThread_acquire_lock(netdb_lock, 1); #endif h = gethostbyname(name); #endif /* HAVE_GETHOSTBYNAME_R */ Py_END_ALLOW_THREADS /* Some C libraries would require addr.__ss_family instead of addr.ss_family. Therefore, we cast the sockaddr_storage into sockaddr to access sa_family. */ sa = (struct sockaddr*)&addr; ret = gethost_common(h, (struct sockaddr *)&addr, sizeof(addr), sa->sa_family); #ifdef USE_GETHOSTBYNAME_LOCK PyThread_release_lock(netdb_lock); #endif finally: PyMem_Free(name); return ret; } PyDoc_STRVAR(ghbn_ex_doc, "gethostbyname_ex(host) -> (name, aliaslist, addresslist)\n\ \n\ Return the true host name, a list of aliases, and a list of IP addresses,\n\ for a host. The host argument is a string giving a host name or IP number."); /* Python interface to gethostbyaddr(IP). */ /*ARGSUSED*/ static PyObject * socket_gethostbyaddr(PyObject *self, PyObject *args) { #ifdef ENABLE_IPV6 struct sockaddr_storage addr; #else struct sockaddr_in addr; #endif struct sockaddr *sa = (struct sockaddr *)&addr; char *ip_num; struct hostent *h; PyObject *ret = NULL; #ifdef HAVE_GETHOSTBYNAME_R struct hostent hp_allocated; #ifdef HAVE_GETHOSTBYNAME_R_3_ARG struct hostent_data data; #else /* glibcs up to 2.10 assume that the buf argument to gethostbyaddr_r is 8-byte aligned, which at least llvm-gcc does not ensure. The attribute below instructs the compiler to maintain this alignment. */ char buf[16384] Py_ALIGNED(8); int buf_len = (sizeof buf) - 1; int errnop; #endif #if defined(HAVE_GETHOSTBYNAME_R_3_ARG) || defined(HAVE_GETHOSTBYNAME_R_6_ARG) int result; #endif #endif /* HAVE_GETHOSTBYNAME_R */ char *ap; int al; int af; if (!PyArg_ParseTuple(args, "et:gethostbyaddr", "idna", &ip_num)) return NULL; af = AF_UNSPEC; if (setipaddr(ip_num, sa, sizeof(addr), af) < 0) goto finally; af = sa->sa_family; ap = NULL; /* al = 0; */ switch (af) { case AF_INET: ap = (char *)&((struct sockaddr_in *)sa)->sin_addr; al = sizeof(((struct sockaddr_in *)sa)->sin_addr); break; #ifdef ENABLE_IPV6 case AF_INET6: ap = (char *)&((struct sockaddr_in6 *)sa)->sin6_addr; al = sizeof(((struct sockaddr_in6 *)sa)->sin6_addr); break; #endif default: PyErr_SetString(socket_error, "unsupported address family"); goto finally; } Py_BEGIN_ALLOW_THREADS #ifdef HAVE_GETHOSTBYNAME_R #if defined(HAVE_GETHOSTBYNAME_R_6_ARG) result = gethostbyaddr_r(ap, al, af, &hp_allocated, buf, buf_len, &h, &errnop); #elif defined(HAVE_GETHOSTBYNAME_R_5_ARG) h = gethostbyaddr_r(ap, al, af, &hp_allocated, buf, buf_len, &errnop); #else /* HAVE_GETHOSTBYNAME_R_3_ARG */ memset((void *) &data, '\0', sizeof(data)); result = gethostbyaddr_r(ap, al, af, &hp_allocated, &data); h = (result != 0) ? NULL : &hp_allocated; #endif #else /* not HAVE_GETHOSTBYNAME_R */ #ifdef USE_GETHOSTBYNAME_LOCK PyThread_acquire_lock(netdb_lock, 1); #endif h = gethostbyaddr(ap, al, af); #endif /* HAVE_GETHOSTBYNAME_R */ Py_END_ALLOW_THREADS ret = gethost_common(h, (struct sockaddr *)&addr, sizeof(addr), af); #ifdef USE_GETHOSTBYNAME_LOCK PyThread_release_lock(netdb_lock); #endif finally: PyMem_Free(ip_num); return ret; } PyDoc_STRVAR(gethostbyaddr_doc, "gethostbyaddr(host) -> (name, aliaslist, addresslist)\n\ \n\ Return the true host name, a list of aliases, and a list of IP addresses,\n\ for a host. The host argument is a string giving a host name or IP number."); /* Python interface to getservbyname(name). This only returns the port number, since the other info is already known or not useful (like the list of aliases). */ /*ARGSUSED*/ static PyObject * socket_getservbyname(PyObject *self, PyObject *args) { char *name, *proto=NULL; struct servent *sp; if (!PyArg_ParseTuple(args, "s|s:getservbyname", &name, &proto)) return NULL; Py_BEGIN_ALLOW_THREADS sp = getservbyname(name, proto); Py_END_ALLOW_THREADS if (sp == NULL) { PyErr_SetString(socket_error, "service/proto not found"); return NULL; } return PyLong_FromLong((long) ntohs(sp->s_port)); } PyDoc_STRVAR(getservbyname_doc, "getservbyname(servicename[, protocolname]) -> integer\n\ \n\ Return a port number from a service name and protocol name.\n\ The optional protocol name, if given, should be 'tcp' or 'udp',\n\ otherwise any protocol will match."); /* Python interface to getservbyport(port). This only returns the service name, since the other info is already known or not useful (like the list of aliases). */ /*ARGSUSED*/ static PyObject * socket_getservbyport(PyObject *self, PyObject *args) { int port; char *proto=NULL; struct servent *sp; if (!PyArg_ParseTuple(args, "i|s:getservbyport", &port, &proto)) return NULL; if (port < 0 || port > 0xffff) { PyErr_SetString( PyExc_OverflowError, "getservbyport: port must be 0-65535."); return NULL; } Py_BEGIN_ALLOW_THREADS sp = getservbyport(htons((short)port), proto); Py_END_ALLOW_THREADS if (sp == NULL) { PyErr_SetString(socket_error, "port/proto not found"); return NULL; } return PyUnicode_FromString(sp->s_name); } PyDoc_STRVAR(getservbyport_doc, "getservbyport(port[, protocolname]) -> string\n\ \n\ Return the service name from a port number and protocol name.\n\ The optional protocol name, if given, should be 'tcp' or 'udp',\n\ otherwise any protocol will match."); /* Python interface to getprotobyname(name). This only returns the protocol number, since the other info is already known or not useful (like the list of aliases). */ /*ARGSUSED*/ static PyObject * socket_getprotobyname(PyObject *self, PyObject *args) { char *name; struct protoent *sp; if (!PyArg_ParseTuple(args, "s:getprotobyname", &name)) return NULL; Py_BEGIN_ALLOW_THREADS sp = getprotobyname(name); Py_END_ALLOW_THREADS if (sp == NULL) { PyErr_SetString(socket_error, "protocol not found"); return NULL; } return PyLong_FromLong((long) sp->p_proto); } PyDoc_STRVAR(getprotobyname_doc, "getprotobyname(name) -> integer\n\ \n\ Return the protocol number for the named protocol. (Rarely used.)"); #ifndef NO_DUP /* dup() function for socket fds */ static PyObject * socket_dup(PyObject *self, PyObject *fdobj) { SOCKET_T fd, newfd; PyObject *newfdobj; fd = PyLong_AsSocket_t(fdobj); if (fd == (SOCKET_T)(-1) && PyErr_Occurred()) return NULL; newfd = dup_socket(fd); if (newfd == INVALID_SOCKET) return set_error(); newfdobj = PyLong_FromSocket_t(newfd); if (newfdobj == NULL) SOCKETCLOSE(newfd); return newfdobj; } PyDoc_STRVAR(dup_doc, "dup(integer) -> integer\n\ \n\ Duplicate an integer socket file descriptor. This is like os.dup(), but for\n\ sockets; on some platforms os.dup() won't work for socket file descriptors."); #endif #ifdef HAVE_SOCKETPAIR /* Create a pair of sockets using the socketpair() function. Arguments as for socket() except the default family is AF_UNIX if defined on the platform; otherwise, the default is AF_INET. */ /*ARGSUSED*/ static PyObject * socket_socketpair(PyObject *self, PyObject *args) { PySocketSockObject *s0 = NULL, *s1 = NULL; SOCKET_T sv[2]; int family, type = SOCK_STREAM, proto = 0; PyObject *res = NULL; #if defined(AF_UNIX) family = AF_UNIX; #else family = AF_INET; #endif if (!PyArg_ParseTuple(args, "|iii:socketpair", &family, &type, &proto)) return NULL; /* Create a pair of socket fds */ if (socketpair(family, type, proto, sv) < 0) return set_error(); s0 = new_sockobject(sv[0], family, type, proto); if (s0 == NULL) goto finally; s1 = new_sockobject(sv[1], family, type, proto); if (s1 == NULL) goto finally; res = PyTuple_Pack(2, s0, s1); finally: if (res == NULL) { if (s0 == NULL) SOCKETCLOSE(sv[0]); if (s1 == NULL) SOCKETCLOSE(sv[1]); } Py_XDECREF(s0); Py_XDECREF(s1); return res; } PyDoc_STRVAR(socketpair_doc, "socketpair([family[, type[, proto]]]) -> (socket object, socket object)\n\ \n\ Create a pair of socket objects from the sockets returned by the platform\n\ socketpair() function.\n\ The arguments are the same as for socket() except the default family is\n\ AF_UNIX if defined on the platform; otherwise, the default is AF_INET."); #endif /* HAVE_SOCKETPAIR */ static PyObject * socket_ntohs(PyObject *self, PyObject *args) { int x1, x2; if (!PyArg_ParseTuple(args, "i:ntohs", &x1)) { return NULL; } if (x1 < 0) { PyErr_SetString(PyExc_OverflowError, "can't convert negative number to unsigned long"); return NULL; } x2 = (unsigned int)ntohs((unsigned short)x1); return PyLong_FromLong(x2); } PyDoc_STRVAR(ntohs_doc, "ntohs(integer) -> integer\n\ \n\ Convert a 16-bit integer from network to host byte order."); static PyObject * socket_ntohl(PyObject *self, PyObject *arg) { unsigned long x; if (PyLong_Check(arg)) { x = PyLong_AsUnsignedLong(arg); if (x == (unsigned long) -1 && PyErr_Occurred()) return NULL; #if SIZEOF_LONG > 4 { unsigned long y; /* only want the trailing 32 bits */ y = x & 0xFFFFFFFFUL; if (y ^ x) return PyErr_Format(PyExc_OverflowError, "long int larger than 32 bits"); x = y; } #endif } else return PyErr_Format(PyExc_TypeError, "expected int/long, %s found", Py_TYPE(arg)->tp_name); if (x == (unsigned long) -1 && PyErr_Occurred()) return NULL; return PyLong_FromUnsignedLong(ntohl(x)); } PyDoc_STRVAR(ntohl_doc, "ntohl(integer) -> integer\n\ \n\ Convert a 32-bit integer from network to host byte order."); static PyObject * socket_htons(PyObject *self, PyObject *args) { int x1, x2; if (!PyArg_ParseTuple(args, "i:htons", &x1)) { return NULL; } if (x1 < 0) { PyErr_SetString(PyExc_OverflowError, "can't convert negative number to unsigned long"); return NULL; } x2 = (unsigned int)htons((unsigned short)x1); return PyLong_FromLong(x2); } PyDoc_STRVAR(htons_doc, "htons(integer) -> integer\n\ \n\ Convert a 16-bit integer from host to network byte order."); static PyObject * socket_htonl(PyObject *self, PyObject *arg) { unsigned long x; if (PyLong_Check(arg)) { x = PyLong_AsUnsignedLong(arg); if (x == (unsigned long) -1 && PyErr_Occurred()) return NULL; #if SIZEOF_LONG > 4 { unsigned long y; /* only want the trailing 32 bits */ y = x & 0xFFFFFFFFUL; if (y ^ x) return PyErr_Format(PyExc_OverflowError, "long int larger than 32 bits"); x = y; } #endif } else return PyErr_Format(PyExc_TypeError, "expected int/long, %s found", Py_TYPE(arg)->tp_name); return PyLong_FromUnsignedLong(htonl((unsigned long)x)); } PyDoc_STRVAR(htonl_doc, "htonl(integer) -> integer\n\ \n\ Convert a 32-bit integer from host to network byte order."); /* socket.inet_aton() and socket.inet_ntoa() functions. */ PyDoc_STRVAR(inet_aton_doc, "inet_aton(string) -> bytes giving packed 32-bit IP representation\n\ \n\ Convert an IP address in string format (123.45.67.89) to the 32-bit packed\n\ binary format used in low-level network functions."); static PyObject* socket_inet_aton(PyObject *self, PyObject *args) { #ifndef INADDR_NONE #define INADDR_NONE (-1) #endif #ifdef HAVE_INET_ATON struct in_addr buf; #endif #if !defined(HAVE_INET_ATON) || defined(USE_INET_ATON_WEAKLINK) #if (SIZEOF_INT != 4) #error "Not sure if in_addr_t exists and int is not 32-bits." #endif /* Have to use inet_addr() instead */ unsigned int packed_addr; #endif char *ip_addr; if (!PyArg_ParseTuple(args, "s:inet_aton", &ip_addr)) return NULL; #ifdef HAVE_INET_ATON #ifdef USE_INET_ATON_WEAKLINK if (inet_aton != NULL) { #endif if (inet_aton(ip_addr, &buf)) return PyBytes_FromStringAndSize((char *)(&buf), sizeof(buf)); PyErr_SetString(socket_error, "illegal IP address string passed to inet_aton"); return NULL; #ifdef USE_INET_ATON_WEAKLINK } else { #endif #endif #if !defined(HAVE_INET_ATON) || defined(USE_INET_ATON_WEAKLINK) /* special-case this address as inet_addr might return INADDR_NONE * for this */ if (strcmp(ip_addr, "255.255.255.255") == 0) { packed_addr = 0xFFFFFFFF; } else { packed_addr = inet_addr(ip_addr); if (packed_addr == INADDR_NONE) { /* invalid address */ PyErr_SetString(socket_error, "illegal IP address string passed to inet_aton"); return NULL; } } return PyBytes_FromStringAndSize((char *) &packed_addr, sizeof(packed_addr)); #ifdef USE_INET_ATON_WEAKLINK } #endif #endif } PyDoc_STRVAR(inet_ntoa_doc, "inet_ntoa(packed_ip) -> ip_address_string\n\ \n\ Convert an IP address from 32-bit packed binary format to string format"); static PyObject* socket_inet_ntoa(PyObject *self, PyObject *args) { char *packed_str; int addr_len; struct in_addr packed_addr; if (!PyArg_ParseTuple(args, "y#:inet_ntoa", &packed_str, &addr_len)) { return NULL; } if (addr_len != sizeof(packed_addr)) { PyErr_SetString(socket_error, "packed IP wrong length for inet_ntoa"); return NULL; } memcpy(&packed_addr, packed_str, addr_len); return PyUnicode_FromString(inet_ntoa(packed_addr)); } #ifdef HAVE_INET_PTON PyDoc_STRVAR(inet_pton_doc, "inet_pton(af, ip) -> packed IP address string\n\ \n\ Convert an IP address from string format to a packed string suitable\n\ for use with low-level network functions."); static PyObject * socket_inet_pton(PyObject *self, PyObject *args) { int af; char* ip; int retval; #ifdef ENABLE_IPV6 char packed[MAX(sizeof(struct in_addr), sizeof(struct in6_addr))]; #else char packed[sizeof(struct in_addr)]; #endif if (!PyArg_ParseTuple(args, "is:inet_pton", &af, &ip)) { return NULL; } #if !defined(ENABLE_IPV6) && defined(AF_INET6) if(af == AF_INET6) { PyErr_SetString(socket_error, "can't use AF_INET6, IPv6 is disabled"); return NULL; } #endif retval = inet_pton(af, ip, packed); if (retval < 0) { PyErr_SetFromErrno(socket_error); return NULL; } else if (retval == 0) { PyErr_SetString(socket_error, "illegal IP address string passed to inet_pton"); return NULL; } else if (af == AF_INET) { return PyBytes_FromStringAndSize(packed, sizeof(struct in_addr)); #ifdef ENABLE_IPV6 } else if (af == AF_INET6) { return PyBytes_FromStringAndSize(packed, sizeof(struct in6_addr)); #endif } else { PyErr_SetString(socket_error, "unknown address family"); return NULL; } } PyDoc_STRVAR(inet_ntop_doc, "inet_ntop(af, packed_ip) -> string formatted IP address\n\ \n\ Convert a packed IP address of the given family to string format."); static PyObject * socket_inet_ntop(PyObject *self, PyObject *args) { int af; char* packed; int len; const char* retval; #ifdef ENABLE_IPV6 char ip[MAX(INET_ADDRSTRLEN, INET6_ADDRSTRLEN) + 1]; #else char ip[INET_ADDRSTRLEN + 1]; #endif /* Guarantee NUL-termination for PyUnicode_FromString() below */ memset((void *) &ip[0], '\0', sizeof(ip)); if (!PyArg_ParseTuple(args, "iy#:inet_ntop", &af, &packed, &len)) { return NULL; } if (af == AF_INET) { if (len != sizeof(struct in_addr)) { PyErr_SetString(PyExc_ValueError, "invalid length of packed IP address string"); return NULL; } #ifdef ENABLE_IPV6 } else if (af == AF_INET6) { if (len != sizeof(struct in6_addr)) { PyErr_SetString(PyExc_ValueError, "invalid length of packed IP address string"); return NULL; } #endif } else { PyErr_Format(PyExc_ValueError, "unknown address family %d", af); return NULL; } retval = inet_ntop(af, packed, ip, sizeof(ip)); if (!retval) { PyErr_SetFromErrno(socket_error); return NULL; } else { return PyUnicode_FromString(retval); } /* NOTREACHED */ PyErr_SetString(PyExc_RuntimeError, "invalid handling of inet_ntop"); return NULL; } #endif /* HAVE_INET_PTON */ /* Python interface to getaddrinfo(host, port). */ /*ARGSUSED*/ static PyObject * socket_getaddrinfo(PyObject *self, PyObject *args, PyObject* kwargs) { static char* kwnames[] = {"host", "port", "family", "type", "proto", "flags", 0}; struct addrinfo hints, *res; struct addrinfo *res0 = NULL; PyObject *hobj = NULL; PyObject *pobj = (PyObject *)NULL; char pbuf[30]; char *hptr, *pptr; int family, socktype, protocol, flags; int error; PyObject *all = (PyObject *)NULL; PyObject *idna = NULL; family = socktype = protocol = flags = 0; family = AF_UNSPEC; if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OO|iiii:getaddrinfo", kwnames, &hobj, &pobj, &family, &socktype, &protocol, &flags)) { return NULL; } if (hobj == Py_None) { hptr = NULL; } else if (PyUnicode_Check(hobj)) { idna = PyObject_CallMethod(hobj, "encode", "s", "idna"); if (!idna) return NULL; assert(PyBytes_Check(idna)); hptr = PyBytes_AS_STRING(idna); } else if (PyBytes_Check(hobj)) { hptr = PyBytes_AsString(hobj); } else { PyErr_SetString(PyExc_TypeError, "getaddrinfo() argument 1 must be string or None"); return NULL; } if (PyLong_CheckExact(pobj)) { long value = PyLong_AsLong(pobj); if (value == -1 && PyErr_Occurred()) goto err; PyOS_snprintf(pbuf, sizeof(pbuf), "%ld", value); pptr = pbuf; } else if (PyUnicode_Check(pobj)) { pptr = _PyUnicode_AsString(pobj); if (pptr == NULL) goto err; } else if (PyBytes_Check(pobj)) { pptr = PyBytes_AS_STRING(pobj); } else if (pobj == Py_None) { pptr = (char *)NULL; } else { PyErr_SetString(socket_error, "Int or String expected"); goto err; } memset(&hints, 0, sizeof(hints)); hints.ai_family = family; hints.ai_socktype = socktype; hints.ai_protocol = protocol; hints.ai_flags = flags; Py_BEGIN_ALLOW_THREADS ACQUIRE_GETADDRINFO_LOCK error = getaddrinfo(hptr, pptr, &hints, &res0); Py_END_ALLOW_THREADS RELEASE_GETADDRINFO_LOCK /* see comment in setipaddr() */ if (error) { set_gaierror(error); goto err; } if ((all = PyList_New(0)) == NULL) goto err; for (res = res0; res; res = res->ai_next) { PyObject *single; PyObject *addr = makesockaddr(-1, res->ai_addr, res->ai_addrlen, protocol); if (addr == NULL) goto err; single = Py_BuildValue("iiisO", res->ai_family, res->ai_socktype, res->ai_protocol, res->ai_canonname ? res->ai_canonname : "", addr); Py_DECREF(addr); if (single == NULL) goto err; if (PyList_Append(all, single)) goto err; Py_XDECREF(single); } Py_XDECREF(idna); if (res0) freeaddrinfo(res0); return all; err: Py_XDECREF(all); Py_XDECREF(idna); if (res0) freeaddrinfo(res0); return (PyObject *)NULL; } PyDoc_STRVAR(getaddrinfo_doc, "getaddrinfo(host, port [, family, socktype, proto, flags])\n\ -> list of (family, socktype, proto, canonname, sockaddr)\n\ \n\ Resolve host and port into addrinfo struct."); /* Python interface to getnameinfo(sa, flags). */ /*ARGSUSED*/ static PyObject * socket_getnameinfo(PyObject *self, PyObject *args) { PyObject *sa = (PyObject *)NULL; int flags; char *hostp; int port, flowinfo, scope_id; char hbuf[NI_MAXHOST], pbuf[NI_MAXSERV]; struct addrinfo hints, *res = NULL; int error; PyObject *ret = (PyObject *)NULL; flags = flowinfo = scope_id = 0; if (!PyArg_ParseTuple(args, "Oi:getnameinfo", &sa, &flags)) return NULL; if (!PyTuple_Check(sa)) { PyErr_SetString(PyExc_TypeError, "getnameinfo() argument 1 must be a tuple"); return NULL; } if (!PyArg_ParseTuple(sa, "si|ii", &hostp, &port, &flowinfo, &scope_id)) return NULL; PyOS_snprintf(pbuf, sizeof(pbuf), "%d", port); memset(&hints, 0, sizeof(hints)); hints.ai_family = AF_UNSPEC; hints.ai_socktype = SOCK_DGRAM; /* make numeric port happy */ hints.ai_flags = AI_NUMERICHOST; /* don't do any name resolution */ Py_BEGIN_ALLOW_THREADS ACQUIRE_GETADDRINFO_LOCK error = getaddrinfo(hostp, pbuf, &hints, &res); Py_END_ALLOW_THREADS RELEASE_GETADDRINFO_LOCK /* see comment in setipaddr() */ if (error) { set_gaierror(error); goto fail; } if (res->ai_next) { PyErr_SetString(socket_error, "sockaddr resolved to multiple addresses"); goto fail; } switch (res->ai_family) { case AF_INET: { if (PyTuple_GET_SIZE(sa) != 2) { PyErr_SetString(socket_error, "IPv4 sockaddr must be 2 tuple"); goto fail; } break; } #ifdef ENABLE_IPV6 case AF_INET6: { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)res->ai_addr; sin6->sin6_flowinfo = flowinfo; sin6->sin6_scope_id = scope_id; break; } #endif } error = getnameinfo(res->ai_addr, (socklen_t) res->ai_addrlen, hbuf, sizeof(hbuf), pbuf, sizeof(pbuf), flags); if (error) { set_gaierror(error); goto fail; } ret = Py_BuildValue("ss", hbuf, pbuf); fail: if (res) freeaddrinfo(res); return ret; } PyDoc_STRVAR(getnameinfo_doc, "getnameinfo(sockaddr, flags) --> (host, port)\n\ \n\ Get host and port for a sockaddr."); /* Python API to getting and setting the default timeout value. */ static PyObject * socket_getdefaulttimeout(PyObject *self) { if (defaulttimeout < 0.0) { Py_INCREF(Py_None); return Py_None; } else return PyFloat_FromDouble(defaulttimeout); } PyDoc_STRVAR(getdefaulttimeout_doc, "getdefaulttimeout() -> timeout\n\ \n\ Returns the default timeout in seconds (float) for new socket objects.\n\ A value of None indicates that new socket objects have no timeout.\n\ When the socket module is first imported, the default is None."); static PyObject * socket_setdefaulttimeout(PyObject *self, PyObject *arg) { double timeout; if (arg == Py_None) timeout = -1.0; else { timeout = PyFloat_AsDouble(arg); if (timeout < 0.0) { if (!PyErr_Occurred()) PyErr_SetString(PyExc_ValueError, "Timeout value out of range"); return NULL; } } defaulttimeout = timeout; Py_INCREF(Py_None); return Py_None; } PyDoc_STRVAR(setdefaulttimeout_doc, "setdefaulttimeout(timeout)\n\ \n\ Set the default timeout in seconds (float) for new socket objects.\n\ A value of None indicates that new socket objects have no timeout.\n\ When the socket module is first imported, the default is None."); #ifdef HAVE_IF_NAMEINDEX /* Python API for getting interface indices and names */ static PyObject * socket_if_nameindex(PyObject *self, PyObject *arg) { PyObject *list; int i; struct if_nameindex *ni; ni = if_nameindex(); if (ni == NULL) { PyErr_SetFromErrno(socket_error); return NULL; } list = PyList_New(0); if (list == NULL) { if_freenameindex(ni); return NULL; } for (i = 0; ni[i].if_index != 0 && i < INT_MAX; i++) { PyObject *ni_tuple = Py_BuildValue("IO&", ni[i].if_index, PyUnicode_DecodeFSDefault, ni[i].if_name); if (ni_tuple == NULL || PyList_Append(list, ni_tuple) == -1) { Py_XDECREF(ni_tuple); Py_DECREF(list); if_freenameindex(ni); return NULL; } Py_DECREF(ni_tuple); } if_freenameindex(ni); return list; } PyDoc_STRVAR(if_nameindex_doc, "if_nameindex()\n\ \n\ Returns a list of network interface information (index, name) tuples."); static PyObject * socket_if_nametoindex(PyObject *self, PyObject *args) { PyObject *oname; unsigned long index; if (!PyArg_ParseTuple(args, "O&:if_nametoindex", PyUnicode_FSConverter, &oname)) return NULL; index = if_nametoindex(PyBytes_AS_STRING(oname)); Py_DECREF(oname); if (index == 0) { /* if_nametoindex() doesn't set errno */ PyErr_SetString(socket_error, "no interface with this name"); return NULL; } return PyLong_FromUnsignedLong(index); } PyDoc_STRVAR(if_nametoindex_doc, "if_nametoindex(if_name)\n\ \n\ Returns the interface index corresponding to the interface name if_name."); static PyObject * socket_if_indextoname(PyObject *self, PyObject *arg) { unsigned long index; char name[IF_NAMESIZE + 1]; index = PyLong_AsUnsignedLong(arg); if (index == (unsigned long) -1) return NULL; if (if_indextoname(index, name) == NULL) { PyErr_SetFromErrno(socket_error); return NULL; } return PyUnicode_DecodeFSDefault(name); } PyDoc_STRVAR(if_indextoname_doc, "if_indextoname(if_index)\n\ \n\ Returns the interface name corresponding to the interface index if_index."); #endif /* HAVE_IF_NAMEINDEX */ #ifdef CMSG_LEN /* Python interface to CMSG_LEN(length). */ static PyObject * socket_CMSG_LEN(PyObject *self, PyObject *args) { Py_ssize_t length; size_t result; if (!PyArg_ParseTuple(args, "n:CMSG_LEN", &length)) return NULL; if (length < 0 || !get_CMSG_LEN(length, &result)) { PyErr_Format(PyExc_OverflowError, "CMSG_LEN() argument out of range"); return NULL; } return PyLong_FromSize_t(result); } PyDoc_STRVAR(CMSG_LEN_doc, "CMSG_LEN(length) -> control message length\n\ \n\ Return the total length, without trailing padding, of an ancillary\n\ data item with associated data of the given length. This value can\n\ often be used as the buffer size for recvmsg() to receive a single\n\ item of ancillary data, but RFC 3542 requires portable applications to\n\ use CMSG_SPACE() and thus include space for padding, even when the\n\ item will be the last in the buffer. Raises OverflowError if length\n\ is outside the permissible range of values."); #ifdef CMSG_SPACE /* Python interface to CMSG_SPACE(length). */ static PyObject * socket_CMSG_SPACE(PyObject *self, PyObject *args) { Py_ssize_t length; size_t result; if (!PyArg_ParseTuple(args, "n:CMSG_SPACE", &length)) return NULL; if (length < 0 || !get_CMSG_SPACE(length, &result)) { PyErr_SetString(PyExc_OverflowError, "CMSG_SPACE() argument out of range"); return NULL; } return PyLong_FromSize_t(result); } PyDoc_STRVAR(CMSG_SPACE_doc, "CMSG_SPACE(length) -> buffer size\n\ \n\ Return the buffer size needed for recvmsg() to receive an ancillary\n\ data item with associated data of the given length, along with any\n\ trailing padding. The buffer space needed to receive multiple items\n\ is the sum of the CMSG_SPACE() values for their associated data\n\ lengths. Raises OverflowError if length is outside the permissible\n\ range of values."); #endif /* CMSG_SPACE */ #endif /* CMSG_LEN */ /* List of functions exported by this module. */ static PyMethodDef socket_methods[] = { {"gethostbyname", socket_gethostbyname, METH_VARARGS, gethostbyname_doc}, {"gethostbyname_ex", socket_gethostbyname_ex, METH_VARARGS, ghbn_ex_doc}, {"gethostbyaddr", socket_gethostbyaddr, METH_VARARGS, gethostbyaddr_doc}, {"gethostname", socket_gethostname, METH_NOARGS, gethostname_doc}, #ifdef HAVE_SETHOSTNAME {"sethostname", socket_sethostname, METH_VARARGS, sethostname_doc}, #endif {"getservbyname", socket_getservbyname, METH_VARARGS, getservbyname_doc}, {"getservbyport", socket_getservbyport, METH_VARARGS, getservbyport_doc}, {"getprotobyname", socket_getprotobyname, METH_VARARGS, getprotobyname_doc}, #ifndef NO_DUP {"dup", socket_dup, METH_O, dup_doc}, #endif #ifdef HAVE_SOCKETPAIR {"socketpair", socket_socketpair, METH_VARARGS, socketpair_doc}, #endif {"ntohs", socket_ntohs, METH_VARARGS, ntohs_doc}, {"ntohl", socket_ntohl, METH_O, ntohl_doc}, {"htons", socket_htons, METH_VARARGS, htons_doc}, {"htonl", socket_htonl, METH_O, htonl_doc}, {"inet_aton", socket_inet_aton, METH_VARARGS, inet_aton_doc}, {"inet_ntoa", socket_inet_ntoa, METH_VARARGS, inet_ntoa_doc}, #ifdef HAVE_INET_PTON {"inet_pton", socket_inet_pton, METH_VARARGS, inet_pton_doc}, {"inet_ntop", socket_inet_ntop, METH_VARARGS, inet_ntop_doc}, #endif {"getaddrinfo", (PyCFunction)socket_getaddrinfo, METH_VARARGS | METH_KEYWORDS, getaddrinfo_doc}, {"getnameinfo", socket_getnameinfo, METH_VARARGS, getnameinfo_doc}, {"getdefaulttimeout", (PyCFunction)socket_getdefaulttimeout, METH_NOARGS, getdefaulttimeout_doc}, {"setdefaulttimeout", socket_setdefaulttimeout, METH_O, setdefaulttimeout_doc}, #ifdef HAVE_IF_NAMEINDEX {"if_nameindex", socket_if_nameindex, METH_NOARGS, if_nameindex_doc}, {"if_nametoindex", socket_if_nametoindex, METH_VARARGS, if_nametoindex_doc}, {"if_indextoname", socket_if_indextoname, METH_O, if_indextoname_doc}, #endif #ifdef CMSG_LEN {"CMSG_LEN", socket_CMSG_LEN, METH_VARARGS, CMSG_LEN_doc}, #ifdef CMSG_SPACE {"CMSG_SPACE", socket_CMSG_SPACE, METH_VARARGS, CMSG_SPACE_doc}, #endif #endif {NULL, NULL} /* Sentinel */ }; #ifdef MS_WINDOWS #define OS_INIT_DEFINED /* Additional initialization and cleanup for Windows */ static void os_cleanup(void) { WSACleanup(); } static int os_init(void) { WSADATA WSAData; int ret; ret = WSAStartup(0x0101, &WSAData); switch (ret) { case 0: /* No error */ Py_AtExit(os_cleanup); return 1; /* Success */ case WSASYSNOTREADY: PyErr_SetString(PyExc_ImportError, "WSAStartup failed: network not ready"); break; case WSAVERNOTSUPPORTED: case WSAEINVAL: PyErr_SetString( PyExc_ImportError, "WSAStartup failed: requested version not supported"); break; default: PyErr_Format(PyExc_ImportError, "WSAStartup failed: error code %d", ret); break; } return 0; /* Failure */ } #endif /* MS_WINDOWS */ #ifdef PYOS_OS2 #define OS_INIT_DEFINED /* Additional initialization for OS/2 */ static int os_init(void) { #ifndef PYCC_GCC int rc = sock_init(); if (rc == 0) { return 1; /* Success */ } PyErr_Format(PyExc_ImportError, "OS/2 TCP/IP Error# %d", sock_errno()); return 0; /* Failure */ #else /* No need to initialize sockets with GCC/EMX */ return 1; /* Success */ #endif } #endif /* PYOS_OS2 */ #ifndef OS_INIT_DEFINED static int os_init(void) { return 1; /* Success */ } #endif /* C API table - always add new things to the end for binary compatibility. */ static PySocketModule_APIObject PySocketModuleAPI = { &sock_type, NULL, NULL }; /* Initialize the _socket module. This module is actually called "_socket", and there's a wrapper "socket.py" which implements some additional functionality. The import of "_socket" may fail with an ImportError exception if os-specific initialization fails. On Windows, this does WINSOCK initialization. When WINSOCK is initialized successfully, a call to WSACleanup() is scheduled to be made at exit time. */ PyDoc_STRVAR(socket_doc, "Implementation module for socket operations.\n\ \n\ See the socket module for documentation."); static struct PyModuleDef socketmodule = { PyModuleDef_HEAD_INIT, PySocket_MODULE_NAME, socket_doc, -1, socket_methods, NULL, NULL, NULL, NULL }; PyMODINIT_FUNC PyInit__socket(void) { PyObject *m, *has_ipv6; if (!os_init()) return NULL; Py_TYPE(&sock_type) = &PyType_Type; m = PyModule_Create(&socketmodule); if (m == NULL) return NULL; socket_error = PyErr_NewException("socket.error", PyExc_IOError, NULL); if (socket_error == NULL) return NULL; PySocketModuleAPI.error = socket_error; Py_INCREF(socket_error); PyModule_AddObject(m, "error", socket_error); socket_herror = PyErr_NewException("socket.herror", socket_error, NULL); if (socket_herror == NULL) return NULL; Py_INCREF(socket_herror); PyModule_AddObject(m, "herror", socket_herror); socket_gaierror = PyErr_NewException("socket.gaierror", socket_error, NULL); if (socket_gaierror == NULL) return NULL; Py_INCREF(socket_gaierror); PyModule_AddObject(m, "gaierror", socket_gaierror); socket_timeout = PyErr_NewException("socket.timeout", socket_error, NULL); if (socket_timeout == NULL) return NULL; PySocketModuleAPI.timeout_error = socket_timeout; Py_INCREF(socket_timeout); PyModule_AddObject(m, "timeout", socket_timeout); Py_INCREF((PyObject *)&sock_type); if (PyModule_AddObject(m, "SocketType", (PyObject *)&sock_type) != 0) return NULL; Py_INCREF((PyObject *)&sock_type); if (PyModule_AddObject(m, "socket", (PyObject *)&sock_type) != 0) return NULL; #ifdef ENABLE_IPV6 has_ipv6 = Py_True; #else has_ipv6 = Py_False; #endif Py_INCREF(has_ipv6); PyModule_AddObject(m, "has_ipv6", has_ipv6); /* Export C API */ if (PyModule_AddObject(m, PySocket_CAPI_NAME, PyCapsule_New(&PySocketModuleAPI, PySocket_CAPSULE_NAME, NULL) ) != 0) return NULL; /* Address families (we only support AF_INET and AF_UNIX) */ #ifdef AF_UNSPEC PyModule_AddIntConstant(m, "AF_UNSPEC", AF_UNSPEC); #endif PyModule_AddIntConstant(m, "AF_INET", AF_INET); #ifdef AF_INET6 PyModule_AddIntConstant(m, "AF_INET6", AF_INET6); #endif /* AF_INET6 */ #if defined(AF_UNIX) PyModule_AddIntConstant(m, "AF_UNIX", AF_UNIX); #endif /* AF_UNIX */ #ifdef AF_AX25 /* Amateur Radio AX.25 */ PyModule_AddIntConstant(m, "AF_AX25", AF_AX25); #endif #ifdef AF_IPX PyModule_AddIntConstant(m, "AF_IPX", AF_IPX); /* Novell IPX */ #endif #ifdef AF_APPLETALK /* Appletalk DDP */ PyModule_AddIntConstant(m, "AF_APPLETALK", AF_APPLETALK); #endif #ifdef AF_NETROM /* Amateur radio NetROM */ PyModule_AddIntConstant(m, "AF_NETROM", AF_NETROM); #endif #ifdef AF_BRIDGE /* Multiprotocol bridge */ PyModule_AddIntConstant(m, "AF_BRIDGE", AF_BRIDGE); #endif #ifdef AF_ATMPVC /* ATM PVCs */ PyModule_AddIntConstant(m, "AF_ATMPVC", AF_ATMPVC); #endif #ifdef AF_AAL5 /* Reserved for Werner's ATM */ PyModule_AddIntConstant(m, "AF_AAL5", AF_AAL5); #endif #ifdef AF_X25 /* Reserved for X.25 project */ PyModule_AddIntConstant(m, "AF_X25", AF_X25); #endif #ifdef AF_INET6 PyModule_AddIntConstant(m, "AF_INET6", AF_INET6); /* IP version 6 */ #endif #ifdef AF_ROSE /* Amateur Radio X.25 PLP */ PyModule_AddIntConstant(m, "AF_ROSE", AF_ROSE); #endif #ifdef AF_DECnet /* Reserved for DECnet project */ PyModule_AddIntConstant(m, "AF_DECnet", AF_DECnet); #endif #ifdef AF_NETBEUI /* Reserved for 802.2LLC project */ PyModule_AddIntConstant(m, "AF_NETBEUI", AF_NETBEUI); #endif #ifdef AF_SECURITY /* Security callback pseudo AF */ PyModule_AddIntConstant(m, "AF_SECURITY", AF_SECURITY); #endif #ifdef AF_KEY /* PF_KEY key management API */ PyModule_AddIntConstant(m, "AF_KEY", AF_KEY); #endif #ifdef AF_NETLINK /* */ PyModule_AddIntConstant(m, "AF_NETLINK", AF_NETLINK); PyModule_AddIntConstant(m, "NETLINK_ROUTE", NETLINK_ROUTE); #ifdef NETLINK_SKIP PyModule_AddIntConstant(m, "NETLINK_SKIP", NETLINK_SKIP); #endif #ifdef NETLINK_W1 PyModule_AddIntConstant(m, "NETLINK_W1", NETLINK_W1); #endif PyModule_AddIntConstant(m, "NETLINK_USERSOCK", NETLINK_USERSOCK); PyModule_AddIntConstant(m, "NETLINK_FIREWALL", NETLINK_FIREWALL); #ifdef NETLINK_TCPDIAG PyModule_AddIntConstant(m, "NETLINK_TCPDIAG", NETLINK_TCPDIAG); #endif #ifdef NETLINK_NFLOG PyModule_AddIntConstant(m, "NETLINK_NFLOG", NETLINK_NFLOG); #endif #ifdef NETLINK_XFRM PyModule_AddIntConstant(m, "NETLINK_XFRM", NETLINK_XFRM); #endif #ifdef NETLINK_ARPD PyModule_AddIntConstant(m, "NETLINK_ARPD", NETLINK_ARPD); #endif #ifdef NETLINK_ROUTE6 PyModule_AddIntConstant(m, "NETLINK_ROUTE6", NETLINK_ROUTE6); #endif PyModule_AddIntConstant(m, "NETLINK_IP6_FW", NETLINK_IP6_FW); #ifdef NETLINK_DNRTMSG PyModule_AddIntConstant(m, "NETLINK_DNRTMSG", NETLINK_DNRTMSG); #endif #ifdef NETLINK_TAPBASE PyModule_AddIntConstant(m, "NETLINK_TAPBASE", NETLINK_TAPBASE); #endif #endif /* AF_NETLINK */ #ifdef AF_ROUTE /* Alias to emulate 4.4BSD */ PyModule_AddIntConstant(m, "AF_ROUTE", AF_ROUTE); #endif #ifdef AF_ASH /* Ash */ PyModule_AddIntConstant(m, "AF_ASH", AF_ASH); #endif #ifdef AF_ECONET /* Acorn Econet */ PyModule_AddIntConstant(m, "AF_ECONET", AF_ECONET); #endif #ifdef AF_ATMSVC /* ATM SVCs */ PyModule_AddIntConstant(m, "AF_ATMSVC", AF_ATMSVC); #endif #ifdef AF_SNA /* Linux SNA Project (nutters!) */ PyModule_AddIntConstant(m, "AF_SNA", AF_SNA); #endif #ifdef AF_IRDA /* IRDA sockets */ PyModule_AddIntConstant(m, "AF_IRDA", AF_IRDA); #endif #ifdef AF_PPPOX /* PPPoX sockets */ PyModule_AddIntConstant(m, "AF_PPPOX", AF_PPPOX); #endif #ifdef AF_WANPIPE /* Wanpipe API Sockets */ PyModule_AddIntConstant(m, "AF_WANPIPE", AF_WANPIPE); #endif #ifdef AF_LLC /* Linux LLC */ PyModule_AddIntConstant(m, "AF_LLC", AF_LLC); #endif #ifdef USE_BLUETOOTH PyModule_AddIntConstant(m, "AF_BLUETOOTH", AF_BLUETOOTH); PyModule_AddIntConstant(m, "BTPROTO_L2CAP", BTPROTO_L2CAP); PyModule_AddIntConstant(m, "BTPROTO_HCI", BTPROTO_HCI); PyModule_AddIntConstant(m, "SOL_HCI", SOL_HCI); #if !defined(__NetBSD__) && !defined(__DragonFly__) PyModule_AddIntConstant(m, "HCI_FILTER", HCI_FILTER); #endif #if !defined(__FreeBSD__) #if !defined(__NetBSD__) && !defined(__DragonFly__) PyModule_AddIntConstant(m, "HCI_TIME_STAMP", HCI_TIME_STAMP); #endif PyModule_AddIntConstant(m, "HCI_DATA_DIR", HCI_DATA_DIR); PyModule_AddIntConstant(m, "BTPROTO_SCO", BTPROTO_SCO); #endif PyModule_AddIntConstant(m, "BTPROTO_RFCOMM", BTPROTO_RFCOMM); PyModule_AddStringConstant(m, "BDADDR_ANY", "00:00:00:00:00:00"); PyModule_AddStringConstant(m, "BDADDR_LOCAL", "00:00:00:FF:FF:FF"); #endif #ifdef AF_CAN /* Controller Area Network */ PyModule_AddIntConstant(m, "AF_CAN", AF_CAN); #endif #ifdef PF_CAN /* Controller Area Network */ PyModule_AddIntConstant(m, "PF_CAN", PF_CAN); #endif #ifdef AF_PACKET PyModule_AddIntMacro(m, AF_PACKET); #endif #ifdef PF_PACKET PyModule_AddIntMacro(m, PF_PACKET); #endif #ifdef PACKET_HOST PyModule_AddIntMacro(m, PACKET_HOST); #endif #ifdef PACKET_BROADCAST PyModule_AddIntMacro(m, PACKET_BROADCAST); #endif #ifdef PACKET_MULTICAST PyModule_AddIntMacro(m, PACKET_MULTICAST); #endif #ifdef PACKET_OTHERHOST PyModule_AddIntMacro(m, PACKET_OTHERHOST); #endif #ifdef PACKET_OUTGOING PyModule_AddIntMacro(m, PACKET_OUTGOING); #endif #ifdef PACKET_LOOPBACK PyModule_AddIntMacro(m, PACKET_LOOPBACK); #endif #ifdef PACKET_FASTROUTE PyModule_AddIntMacro(m, PACKET_FASTROUTE); #endif #ifdef HAVE_LINUX_TIPC_H PyModule_AddIntConstant(m, "AF_TIPC", AF_TIPC); /* for addresses */ PyModule_AddIntConstant(m, "TIPC_ADDR_NAMESEQ", TIPC_ADDR_NAMESEQ); PyModule_AddIntConstant(m, "TIPC_ADDR_NAME", TIPC_ADDR_NAME); PyModule_AddIntConstant(m, "TIPC_ADDR_ID", TIPC_ADDR_ID); PyModule_AddIntConstant(m, "TIPC_ZONE_SCOPE", TIPC_ZONE_SCOPE); PyModule_AddIntConstant(m, "TIPC_CLUSTER_SCOPE", TIPC_CLUSTER_SCOPE); PyModule_AddIntConstant(m, "TIPC_NODE_SCOPE", TIPC_NODE_SCOPE); /* for setsockopt() */ PyModule_AddIntConstant(m, "SOL_TIPC", SOL_TIPC); PyModule_AddIntConstant(m, "TIPC_IMPORTANCE", TIPC_IMPORTANCE); PyModule_AddIntConstant(m, "TIPC_SRC_DROPPABLE", TIPC_SRC_DROPPABLE); PyModule_AddIntConstant(m, "TIPC_DEST_DROPPABLE", TIPC_DEST_DROPPABLE); PyModule_AddIntConstant(m, "TIPC_CONN_TIMEOUT", TIPC_CONN_TIMEOUT); PyModule_AddIntConstant(m, "TIPC_LOW_IMPORTANCE", TIPC_LOW_IMPORTANCE); PyModule_AddIntConstant(m, "TIPC_MEDIUM_IMPORTANCE", TIPC_MEDIUM_IMPORTANCE); PyModule_AddIntConstant(m, "TIPC_HIGH_IMPORTANCE", TIPC_HIGH_IMPORTANCE); PyModule_AddIntConstant(m, "TIPC_CRITICAL_IMPORTANCE", TIPC_CRITICAL_IMPORTANCE); /* for subscriptions */ PyModule_AddIntConstant(m, "TIPC_SUB_PORTS", TIPC_SUB_PORTS); PyModule_AddIntConstant(m, "TIPC_SUB_SERVICE", TIPC_SUB_SERVICE); #ifdef TIPC_SUB_CANCEL /* doesn't seem to be available everywhere */ PyModule_AddIntConstant(m, "TIPC_SUB_CANCEL", TIPC_SUB_CANCEL); #endif PyModule_AddIntConstant(m, "TIPC_WAIT_FOREVER", TIPC_WAIT_FOREVER); PyModule_AddIntConstant(m, "TIPC_PUBLISHED", TIPC_PUBLISHED); PyModule_AddIntConstant(m, "TIPC_WITHDRAWN", TIPC_WITHDRAWN); PyModule_AddIntConstant(m, "TIPC_SUBSCR_TIMEOUT", TIPC_SUBSCR_TIMEOUT); PyModule_AddIntConstant(m, "TIPC_CFG_SRV", TIPC_CFG_SRV); PyModule_AddIntConstant(m, "TIPC_TOP_SRV", TIPC_TOP_SRV); #endif /* Socket types */ PyModule_AddIntConstant(m, "SOCK_STREAM", SOCK_STREAM); PyModule_AddIntConstant(m, "SOCK_DGRAM", SOCK_DGRAM); /* We have incomplete socket support. */ PyModule_AddIntConstant(m, "SOCK_RAW", SOCK_RAW); PyModule_AddIntConstant(m, "SOCK_SEQPACKET", SOCK_SEQPACKET); #if defined(SOCK_RDM) PyModule_AddIntConstant(m, "SOCK_RDM", SOCK_RDM); #endif #ifdef SOCK_CLOEXEC PyModule_AddIntConstant(m, "SOCK_CLOEXEC", SOCK_CLOEXEC); #endif #ifdef SOCK_NONBLOCK PyModule_AddIntConstant(m, "SOCK_NONBLOCK", SOCK_NONBLOCK); #endif #ifdef SO_DEBUG PyModule_AddIntConstant(m, "SO_DEBUG", SO_DEBUG); #endif #ifdef SO_ACCEPTCONN PyModule_AddIntConstant(m, "SO_ACCEPTCONN", SO_ACCEPTCONN); #endif #ifdef SO_REUSEADDR PyModule_AddIntConstant(m, "SO_REUSEADDR", SO_REUSEADDR); #endif #ifdef SO_EXCLUSIVEADDRUSE PyModule_AddIntConstant(m, "SO_EXCLUSIVEADDRUSE", SO_EXCLUSIVEADDRUSE); #endif #ifdef SO_KEEPALIVE PyModule_AddIntConstant(m, "SO_KEEPALIVE", SO_KEEPALIVE); #endif #ifdef SO_DONTROUTE PyModule_AddIntConstant(m, "SO_DONTROUTE", SO_DONTROUTE); #endif #ifdef SO_BROADCAST PyModule_AddIntConstant(m, "SO_BROADCAST", SO_BROADCAST); #endif #ifdef SO_USELOOPBACK PyModule_AddIntConstant(m, "SO_USELOOPBACK", SO_USELOOPBACK); #endif #ifdef SO_LINGER PyModule_AddIntConstant(m, "SO_LINGER", SO_LINGER); #endif #ifdef SO_OOBINLINE PyModule_AddIntConstant(m, "SO_OOBINLINE", SO_OOBINLINE); #endif #ifdef SO_REUSEPORT PyModule_AddIntConstant(m, "SO_REUSEPORT", SO_REUSEPORT); #endif #ifdef SO_SNDBUF PyModule_AddIntConstant(m, "SO_SNDBUF", SO_SNDBUF); #endif #ifdef SO_RCVBUF PyModule_AddIntConstant(m, "SO_RCVBUF", SO_RCVBUF); #endif #ifdef SO_SNDLOWAT PyModule_AddIntConstant(m, "SO_SNDLOWAT", SO_SNDLOWAT); #endif #ifdef SO_RCVLOWAT PyModule_AddIntConstant(m, "SO_RCVLOWAT", SO_RCVLOWAT); #endif #ifdef SO_SNDTIMEO PyModule_AddIntConstant(m, "SO_SNDTIMEO", SO_SNDTIMEO); #endif #ifdef SO_RCVTIMEO PyModule_AddIntConstant(m, "SO_RCVTIMEO", SO_RCVTIMEO); #endif #ifdef SO_ERROR PyModule_AddIntConstant(m, "SO_ERROR", SO_ERROR); #endif #ifdef SO_TYPE PyModule_AddIntConstant(m, "SO_TYPE", SO_TYPE); #endif #ifdef SO_SETFIB PyModule_AddIntConstant(m, "SO_SETFIB", SO_SETFIB); #endif #ifdef SO_PASSCRED PyModule_AddIntConstant(m, "SO_PASSCRED", SO_PASSCRED); #endif #ifdef SO_PEERCRED PyModule_AddIntConstant(m, "SO_PEERCRED", SO_PEERCRED); #endif #ifdef LOCAL_PEERCRED PyModule_AddIntConstant(m, "LOCAL_PEERCRED", LOCAL_PEERCRED); #endif /* Maximum number of connections for "listen" */ #ifdef SOMAXCONN PyModule_AddIntConstant(m, "SOMAXCONN", SOMAXCONN); #else PyModule_AddIntConstant(m, "SOMAXCONN", 5); /* Common value */ #endif /* Ancilliary message types */ #ifdef SCM_RIGHTS PyModule_AddIntConstant(m, "SCM_RIGHTS", SCM_RIGHTS); #endif #ifdef SCM_CREDENTIALS PyModule_AddIntConstant(m, "SCM_CREDENTIALS", SCM_CREDENTIALS); #endif #ifdef SCM_CREDS PyModule_AddIntConstant(m, "SCM_CREDS", SCM_CREDS); #endif /* Flags for send, recv */ #ifdef MSG_OOB PyModule_AddIntConstant(m, "MSG_OOB", MSG_OOB); #endif #ifdef MSG_PEEK PyModule_AddIntConstant(m, "MSG_PEEK", MSG_PEEK); #endif #ifdef MSG_DONTROUTE PyModule_AddIntConstant(m, "MSG_DONTROUTE", MSG_DONTROUTE); #endif #ifdef MSG_DONTWAIT PyModule_AddIntConstant(m, "MSG_DONTWAIT", MSG_DONTWAIT); #endif #ifdef MSG_EOR PyModule_AddIntConstant(m, "MSG_EOR", MSG_EOR); #endif #ifdef MSG_TRUNC PyModule_AddIntConstant(m, "MSG_TRUNC", MSG_TRUNC); #endif #ifdef MSG_CTRUNC PyModule_AddIntConstant(m, "MSG_CTRUNC", MSG_CTRUNC); #endif #ifdef MSG_WAITALL PyModule_AddIntConstant(m, "MSG_WAITALL", MSG_WAITALL); #endif #ifdef MSG_BTAG PyModule_AddIntConstant(m, "MSG_BTAG", MSG_BTAG); #endif #ifdef MSG_ETAG PyModule_AddIntConstant(m, "MSG_ETAG", MSG_ETAG); #endif #ifdef MSG_NOSIGNAL PyModule_AddIntConstant(m, "MSG_NOSIGNAL", MSG_NOSIGNAL); #endif #ifdef MSG_NOTIFICATION PyModule_AddIntConstant(m, "MSG_NOTIFICATION", MSG_NOTIFICATION); #endif #ifdef MSG_CMSG_CLOEXEC PyModule_AddIntConstant(m, "MSG_CMSG_CLOEXEC", MSG_CMSG_CLOEXEC); #endif #ifdef MSG_ERRQUEUE PyModule_AddIntConstant(m, "MSG_ERRQUEUE", MSG_ERRQUEUE); #endif #ifdef MSG_CONFIRM PyModule_AddIntConstant(m, "MSG_CONFIRM", MSG_CONFIRM); #endif #ifdef MSG_MORE PyModule_AddIntConstant(m, "MSG_MORE", MSG_MORE); #endif #ifdef MSG_EOF PyModule_AddIntConstant(m, "MSG_EOF", MSG_EOF); #endif #ifdef MSG_BCAST PyModule_AddIntConstant(m, "MSG_BCAST", MSG_BCAST); #endif #ifdef MSG_MCAST PyModule_AddIntConstant(m, "MSG_MCAST", MSG_MCAST); #endif /* Protocol level and numbers, usable for [gs]etsockopt */ #ifdef SOL_SOCKET PyModule_AddIntConstant(m, "SOL_SOCKET", SOL_SOCKET); #endif #ifdef SOL_IP PyModule_AddIntConstant(m, "SOL_IP", SOL_IP); #else PyModule_AddIntConstant(m, "SOL_IP", 0); #endif #ifdef SOL_IPX PyModule_AddIntConstant(m, "SOL_IPX", SOL_IPX); #endif #ifdef SOL_AX25 PyModule_AddIntConstant(m, "SOL_AX25", SOL_AX25); #endif #ifdef SOL_ATALK PyModule_AddIntConstant(m, "SOL_ATALK", SOL_ATALK); #endif #ifdef SOL_NETROM PyModule_AddIntConstant(m, "SOL_NETROM", SOL_NETROM); #endif #ifdef SOL_ROSE PyModule_AddIntConstant(m, "SOL_ROSE", SOL_ROSE); #endif #ifdef SOL_TCP PyModule_AddIntConstant(m, "SOL_TCP", SOL_TCP); #else PyModule_AddIntConstant(m, "SOL_TCP", 6); #endif #ifdef SOL_UDP PyModule_AddIntConstant(m, "SOL_UDP", SOL_UDP); #else PyModule_AddIntConstant(m, "SOL_UDP", 17); #endif #ifdef SOL_CAN_BASE PyModule_AddIntConstant(m, "SOL_CAN_BASE", SOL_CAN_BASE); #endif #ifdef SOL_CAN_RAW PyModule_AddIntConstant(m, "SOL_CAN_RAW", SOL_CAN_RAW); PyModule_AddIntConstant(m, "CAN_RAW", CAN_RAW); #endif #ifdef HAVE_LINUX_CAN_H PyModule_AddIntConstant(m, "CAN_EFF_FLAG", CAN_EFF_FLAG); PyModule_AddIntConstant(m, "CAN_RTR_FLAG", CAN_RTR_FLAG); PyModule_AddIntConstant(m, "CAN_ERR_FLAG", CAN_ERR_FLAG); PyModule_AddIntConstant(m, "CAN_SFF_MASK", CAN_SFF_MASK); PyModule_AddIntConstant(m, "CAN_EFF_MASK", CAN_EFF_MASK); PyModule_AddIntConstant(m, "CAN_ERR_MASK", CAN_ERR_MASK); #endif #ifdef HAVE_LINUX_CAN_RAW_H PyModule_AddIntConstant(m, "CAN_RAW_FILTER", CAN_RAW_FILTER); PyModule_AddIntConstant(m, "CAN_RAW_ERR_FILTER", CAN_RAW_ERR_FILTER); PyModule_AddIntConstant(m, "CAN_RAW_LOOPBACK", CAN_RAW_LOOPBACK); PyModule_AddIntConstant(m, "CAN_RAW_RECV_OWN_MSGS", CAN_RAW_RECV_OWN_MSGS); #endif #ifdef IPPROTO_IP PyModule_AddIntConstant(m, "IPPROTO_IP", IPPROTO_IP); #else PyModule_AddIntConstant(m, "IPPROTO_IP", 0); #endif #ifdef IPPROTO_HOPOPTS PyModule_AddIntConstant(m, "IPPROTO_HOPOPTS", IPPROTO_HOPOPTS); #endif #ifdef IPPROTO_ICMP PyModule_AddIntConstant(m, "IPPROTO_ICMP", IPPROTO_ICMP); #else PyModule_AddIntConstant(m, "IPPROTO_ICMP", 1); #endif #ifdef IPPROTO_IGMP PyModule_AddIntConstant(m, "IPPROTO_IGMP", IPPROTO_IGMP); #endif #ifdef IPPROTO_GGP PyModule_AddIntConstant(m, "IPPROTO_GGP", IPPROTO_GGP); #endif #ifdef IPPROTO_IPV4 PyModule_AddIntConstant(m, "IPPROTO_IPV4", IPPROTO_IPV4); #endif #ifdef IPPROTO_IPV6 PyModule_AddIntConstant(m, "IPPROTO_IPV6", IPPROTO_IPV6); #endif #ifdef IPPROTO_IPIP PyModule_AddIntConstant(m, "IPPROTO_IPIP", IPPROTO_IPIP); #endif #ifdef IPPROTO_TCP PyModule_AddIntConstant(m, "IPPROTO_TCP", IPPROTO_TCP); #else PyModule_AddIntConstant(m, "IPPROTO_TCP", 6); #endif #ifdef IPPROTO_EGP PyModule_AddIntConstant(m, "IPPROTO_EGP", IPPROTO_EGP); #endif #ifdef IPPROTO_PUP PyModule_AddIntConstant(m, "IPPROTO_PUP", IPPROTO_PUP); #endif #ifdef IPPROTO_UDP PyModule_AddIntConstant(m, "IPPROTO_UDP", IPPROTO_UDP); #else PyModule_AddIntConstant(m, "IPPROTO_UDP", 17); #endif #ifdef IPPROTO_IDP PyModule_AddIntConstant(m, "IPPROTO_IDP", IPPROTO_IDP); #endif #ifdef IPPROTO_HELLO PyModule_AddIntConstant(m, "IPPROTO_HELLO", IPPROTO_HELLO); #endif #ifdef IPPROTO_ND PyModule_AddIntConstant(m, "IPPROTO_ND", IPPROTO_ND); #endif #ifdef IPPROTO_TP PyModule_AddIntConstant(m, "IPPROTO_TP", IPPROTO_TP); #endif #ifdef IPPROTO_IPV6 PyModule_AddIntConstant(m, "IPPROTO_IPV6", IPPROTO_IPV6); #endif #ifdef IPPROTO_ROUTING PyModule_AddIntConstant(m, "IPPROTO_ROUTING", IPPROTO_ROUTING); #endif #ifdef IPPROTO_FRAGMENT PyModule_AddIntConstant(m, "IPPROTO_FRAGMENT", IPPROTO_FRAGMENT); #endif #ifdef IPPROTO_RSVP PyModule_AddIntConstant(m, "IPPROTO_RSVP", IPPROTO_RSVP); #endif #ifdef IPPROTO_GRE PyModule_AddIntConstant(m, "IPPROTO_GRE", IPPROTO_GRE); #endif #ifdef IPPROTO_ESP PyModule_AddIntConstant(m, "IPPROTO_ESP", IPPROTO_ESP); #endif #ifdef IPPROTO_AH PyModule_AddIntConstant(m, "IPPROTO_AH", IPPROTO_AH); #endif #ifdef IPPROTO_MOBILE PyModule_AddIntConstant(m, "IPPROTO_MOBILE", IPPROTO_MOBILE); #endif #ifdef IPPROTO_ICMPV6 PyModule_AddIntConstant(m, "IPPROTO_ICMPV6", IPPROTO_ICMPV6); #endif #ifdef IPPROTO_NONE PyModule_AddIntConstant(m, "IPPROTO_NONE", IPPROTO_NONE); #endif #ifdef IPPROTO_DSTOPTS PyModule_AddIntConstant(m, "IPPROTO_DSTOPTS", IPPROTO_DSTOPTS); #endif #ifdef IPPROTO_XTP PyModule_AddIntConstant(m, "IPPROTO_XTP", IPPROTO_XTP); #endif #ifdef IPPROTO_EON PyModule_AddIntConstant(m, "IPPROTO_EON", IPPROTO_EON); #endif #ifdef IPPROTO_PIM PyModule_AddIntConstant(m, "IPPROTO_PIM", IPPROTO_PIM); #endif #ifdef IPPROTO_IPCOMP PyModule_AddIntConstant(m, "IPPROTO_IPCOMP", IPPROTO_IPCOMP); #endif #ifdef IPPROTO_VRRP PyModule_AddIntConstant(m, "IPPROTO_VRRP", IPPROTO_VRRP); #endif #ifdef IPPROTO_SCTP PyModule_AddIntConstant(m, "IPPROTO_SCTP", IPPROTO_SCTP); #endif #ifdef IPPROTO_BIP PyModule_AddIntConstant(m, "IPPROTO_BIP", IPPROTO_BIP); #endif /**/ #ifdef IPPROTO_RAW PyModule_AddIntConstant(m, "IPPROTO_RAW", IPPROTO_RAW); #else PyModule_AddIntConstant(m, "IPPROTO_RAW", 255); #endif #ifdef IPPROTO_MAX PyModule_AddIntConstant(m, "IPPROTO_MAX", IPPROTO_MAX); #endif /* Some port configuration */ #ifdef IPPORT_RESERVED PyModule_AddIntConstant(m, "IPPORT_RESERVED", IPPORT_RESERVED); #else PyModule_AddIntConstant(m, "IPPORT_RESERVED", 1024); #endif #ifdef IPPORT_USERRESERVED PyModule_AddIntConstant(m, "IPPORT_USERRESERVED", IPPORT_USERRESERVED); #else PyModule_AddIntConstant(m, "IPPORT_USERRESERVED", 5000); #endif /* Some reserved IP v.4 addresses */ #ifdef INADDR_ANY PyModule_AddIntConstant(m, "INADDR_ANY", INADDR_ANY); #else PyModule_AddIntConstant(m, "INADDR_ANY", 0x00000000); #endif #ifdef INADDR_BROADCAST PyModule_AddIntConstant(m, "INADDR_BROADCAST", INADDR_BROADCAST); #else PyModule_AddIntConstant(m, "INADDR_BROADCAST", 0xffffffff); #endif #ifdef INADDR_LOOPBACK PyModule_AddIntConstant(m, "INADDR_LOOPBACK", INADDR_LOOPBACK); #else PyModule_AddIntConstant(m, "INADDR_LOOPBACK", 0x7F000001); #endif #ifdef INADDR_UNSPEC_GROUP PyModule_AddIntConstant(m, "INADDR_UNSPEC_GROUP", INADDR_UNSPEC_GROUP); #else PyModule_AddIntConstant(m, "INADDR_UNSPEC_GROUP", 0xe0000000); #endif #ifdef INADDR_ALLHOSTS_GROUP PyModule_AddIntConstant(m, "INADDR_ALLHOSTS_GROUP", INADDR_ALLHOSTS_GROUP); #else PyModule_AddIntConstant(m, "INADDR_ALLHOSTS_GROUP", 0xe0000001); #endif #ifdef INADDR_MAX_LOCAL_GROUP PyModule_AddIntConstant(m, "INADDR_MAX_LOCAL_GROUP", INADDR_MAX_LOCAL_GROUP); #else PyModule_AddIntConstant(m, "INADDR_MAX_LOCAL_GROUP", 0xe00000ff); #endif #ifdef INADDR_NONE PyModule_AddIntConstant(m, "INADDR_NONE", INADDR_NONE); #else PyModule_AddIntConstant(m, "INADDR_NONE", 0xffffffff); #endif /* IPv4 [gs]etsockopt options */ #ifdef IP_OPTIONS PyModule_AddIntConstant(m, "IP_OPTIONS", IP_OPTIONS); #endif #ifdef IP_HDRINCL PyModule_AddIntConstant(m, "IP_HDRINCL", IP_HDRINCL); #endif #ifdef IP_TOS PyModule_AddIntConstant(m, "IP_TOS", IP_TOS); #endif #ifdef IP_TTL PyModule_AddIntConstant(m, "IP_TTL", IP_TTL); #endif #ifdef IP_RECVOPTS PyModule_AddIntConstant(m, "IP_RECVOPTS", IP_RECVOPTS); #endif #ifdef IP_RECVRETOPTS PyModule_AddIntConstant(m, "IP_RECVRETOPTS", IP_RECVRETOPTS); #endif #ifdef IP_RECVDSTADDR PyModule_AddIntConstant(m, "IP_RECVDSTADDR", IP_RECVDSTADDR); #endif #ifdef IP_RETOPTS PyModule_AddIntConstant(m, "IP_RETOPTS", IP_RETOPTS); #endif #ifdef IP_MULTICAST_IF PyModule_AddIntConstant(m, "IP_MULTICAST_IF", IP_MULTICAST_IF); #endif #ifdef IP_MULTICAST_TTL PyModule_AddIntConstant(m, "IP_MULTICAST_TTL", IP_MULTICAST_TTL); #endif #ifdef IP_MULTICAST_LOOP PyModule_AddIntConstant(m, "IP_MULTICAST_LOOP", IP_MULTICAST_LOOP); #endif #ifdef IP_ADD_MEMBERSHIP PyModule_AddIntConstant(m, "IP_ADD_MEMBERSHIP", IP_ADD_MEMBERSHIP); #endif #ifdef IP_DROP_MEMBERSHIP PyModule_AddIntConstant(m, "IP_DROP_MEMBERSHIP", IP_DROP_MEMBERSHIP); #endif #ifdef IP_DEFAULT_MULTICAST_TTL PyModule_AddIntConstant(m, "IP_DEFAULT_MULTICAST_TTL", IP_DEFAULT_MULTICAST_TTL); #endif #ifdef IP_DEFAULT_MULTICAST_LOOP PyModule_AddIntConstant(m, "IP_DEFAULT_MULTICAST_LOOP", IP_DEFAULT_MULTICAST_LOOP); #endif #ifdef IP_MAX_MEMBERSHIPS PyModule_AddIntConstant(m, "IP_MAX_MEMBERSHIPS", IP_MAX_MEMBERSHIPS); #endif /* IPv6 [gs]etsockopt options, defined in RFC2553 */ #ifdef IPV6_JOIN_GROUP PyModule_AddIntConstant(m, "IPV6_JOIN_GROUP", IPV6_JOIN_GROUP); #endif #ifdef IPV6_LEAVE_GROUP PyModule_AddIntConstant(m, "IPV6_LEAVE_GROUP", IPV6_LEAVE_GROUP); #endif #ifdef IPV6_MULTICAST_HOPS PyModule_AddIntConstant(m, "IPV6_MULTICAST_HOPS", IPV6_MULTICAST_HOPS); #endif #ifdef IPV6_MULTICAST_IF PyModule_AddIntConstant(m, "IPV6_MULTICAST_IF", IPV6_MULTICAST_IF); #endif #ifdef IPV6_MULTICAST_LOOP PyModule_AddIntConstant(m, "IPV6_MULTICAST_LOOP", IPV6_MULTICAST_LOOP); #endif #ifdef IPV6_UNICAST_HOPS PyModule_AddIntConstant(m, "IPV6_UNICAST_HOPS", IPV6_UNICAST_HOPS); #endif /* Additional IPV6 socket options, defined in RFC 3493 */ #ifdef IPV6_V6ONLY PyModule_AddIntConstant(m, "IPV6_V6ONLY", IPV6_V6ONLY); #endif /* Advanced IPV6 socket options, from RFC 3542 */ #ifdef IPV6_CHECKSUM PyModule_AddIntConstant(m, "IPV6_CHECKSUM", IPV6_CHECKSUM); #endif #ifdef IPV6_DONTFRAG PyModule_AddIntConstant(m, "IPV6_DONTFRAG", IPV6_DONTFRAG); #endif #ifdef IPV6_DSTOPTS PyModule_AddIntConstant(m, "IPV6_DSTOPTS", IPV6_DSTOPTS); #endif #ifdef IPV6_HOPLIMIT PyModule_AddIntConstant(m, "IPV6_HOPLIMIT", IPV6_HOPLIMIT); #endif #ifdef IPV6_HOPOPTS PyModule_AddIntConstant(m, "IPV6_HOPOPTS", IPV6_HOPOPTS); #endif #ifdef IPV6_NEXTHOP PyModule_AddIntConstant(m, "IPV6_NEXTHOP", IPV6_NEXTHOP); #endif #ifdef IPV6_PATHMTU PyModule_AddIntConstant(m, "IPV6_PATHMTU", IPV6_PATHMTU); #endif #ifdef IPV6_PKTINFO PyModule_AddIntConstant(m, "IPV6_PKTINFO", IPV6_PKTINFO); #endif #ifdef IPV6_RECVDSTOPTS PyModule_AddIntConstant(m, "IPV6_RECVDSTOPTS", IPV6_RECVDSTOPTS); #endif #ifdef IPV6_RECVHOPLIMIT PyModule_AddIntConstant(m, "IPV6_RECVHOPLIMIT", IPV6_RECVHOPLIMIT); #endif #ifdef IPV6_RECVHOPOPTS PyModule_AddIntConstant(m, "IPV6_RECVHOPOPTS", IPV6_RECVHOPOPTS); #endif #ifdef IPV6_RECVPKTINFO PyModule_AddIntConstant(m, "IPV6_RECVPKTINFO", IPV6_RECVPKTINFO); #endif #ifdef IPV6_RECVRTHDR PyModule_AddIntConstant(m, "IPV6_RECVRTHDR", IPV6_RECVRTHDR); #endif #ifdef IPV6_RECVTCLASS PyModule_AddIntConstant(m, "IPV6_RECVTCLASS", IPV6_RECVTCLASS); #endif #ifdef IPV6_RTHDR PyModule_AddIntConstant(m, "IPV6_RTHDR", IPV6_RTHDR); #endif #ifdef IPV6_RTHDRDSTOPTS PyModule_AddIntConstant(m, "IPV6_RTHDRDSTOPTS", IPV6_RTHDRDSTOPTS); #endif #ifdef IPV6_RTHDR_TYPE_0 PyModule_AddIntConstant(m, "IPV6_RTHDR_TYPE_0", IPV6_RTHDR_TYPE_0); #endif #ifdef IPV6_RECVPATHMTU PyModule_AddIntConstant(m, "IPV6_RECVPATHMTU", IPV6_RECVPATHMTU); #endif #ifdef IPV6_TCLASS PyModule_AddIntConstant(m, "IPV6_TCLASS", IPV6_TCLASS); #endif #ifdef IPV6_USE_MIN_MTU PyModule_AddIntConstant(m, "IPV6_USE_MIN_MTU", IPV6_USE_MIN_MTU); #endif /* TCP options */ #ifdef TCP_NODELAY PyModule_AddIntConstant(m, "TCP_NODELAY", TCP_NODELAY); #endif #ifdef TCP_MAXSEG PyModule_AddIntConstant(m, "TCP_MAXSEG", TCP_MAXSEG); #endif #ifdef TCP_CORK PyModule_AddIntConstant(m, "TCP_CORK", TCP_CORK); #endif #ifdef TCP_KEEPIDLE PyModule_AddIntConstant(m, "TCP_KEEPIDLE", TCP_KEEPIDLE); #endif #ifdef TCP_KEEPINTVL PyModule_AddIntConstant(m, "TCP_KEEPINTVL", TCP_KEEPINTVL); #endif #ifdef TCP_KEEPCNT PyModule_AddIntConstant(m, "TCP_KEEPCNT", TCP_KEEPCNT); #endif #ifdef TCP_SYNCNT PyModule_AddIntConstant(m, "TCP_SYNCNT", TCP_SYNCNT); #endif #ifdef TCP_LINGER2 PyModule_AddIntConstant(m, "TCP_LINGER2", TCP_LINGER2); #endif #ifdef TCP_DEFER_ACCEPT PyModule_AddIntConstant(m, "TCP_DEFER_ACCEPT", TCP_DEFER_ACCEPT); #endif #ifdef TCP_WINDOW_CLAMP PyModule_AddIntConstant(m, "TCP_WINDOW_CLAMP", TCP_WINDOW_CLAMP); #endif #ifdef TCP_INFO PyModule_AddIntConstant(m, "TCP_INFO", TCP_INFO); #endif #ifdef TCP_QUICKACK PyModule_AddIntConstant(m, "TCP_QUICKACK", TCP_QUICKACK); #endif /* IPX options */ #ifdef IPX_TYPE PyModule_AddIntConstant(m, "IPX_TYPE", IPX_TYPE); #endif /* get{addr,name}info parameters */ #ifdef EAI_ADDRFAMILY PyModule_AddIntConstant(m, "EAI_ADDRFAMILY", EAI_ADDRFAMILY); #endif #ifdef EAI_AGAIN PyModule_AddIntConstant(m, "EAI_AGAIN", EAI_AGAIN); #endif #ifdef EAI_BADFLAGS PyModule_AddIntConstant(m, "EAI_BADFLAGS", EAI_BADFLAGS); #endif #ifdef EAI_FAIL PyModule_AddIntConstant(m, "EAI_FAIL", EAI_FAIL); #endif #ifdef EAI_FAMILY PyModule_AddIntConstant(m, "EAI_FAMILY", EAI_FAMILY); #endif #ifdef EAI_MEMORY PyModule_AddIntConstant(m, "EAI_MEMORY", EAI_MEMORY); #endif #ifdef EAI_NODATA PyModule_AddIntConstant(m, "EAI_NODATA", EAI_NODATA); #endif #ifdef EAI_NONAME PyModule_AddIntConstant(m, "EAI_NONAME", EAI_NONAME); #endif #ifdef EAI_OVERFLOW PyModule_AddIntConstant(m, "EAI_OVERFLOW", EAI_OVERFLOW); #endif #ifdef EAI_SERVICE PyModule_AddIntConstant(m, "EAI_SERVICE", EAI_SERVICE); #endif #ifdef EAI_SOCKTYPE PyModule_AddIntConstant(m, "EAI_SOCKTYPE", EAI_SOCKTYPE); #endif #ifdef EAI_SYSTEM PyModule_AddIntConstant(m, "EAI_SYSTEM", EAI_SYSTEM); #endif #ifdef EAI_BADHINTS PyModule_AddIntConstant(m, "EAI_BADHINTS", EAI_BADHINTS); #endif #ifdef EAI_PROTOCOL PyModule_AddIntConstant(m, "EAI_PROTOCOL", EAI_PROTOCOL); #endif #ifdef EAI_MAX PyModule_AddIntConstant(m, "EAI_MAX", EAI_MAX); #endif #ifdef AI_PASSIVE PyModule_AddIntConstant(m, "AI_PASSIVE", AI_PASSIVE); #endif #ifdef AI_CANONNAME PyModule_AddIntConstant(m, "AI_CANONNAME", AI_CANONNAME); #endif #ifdef AI_NUMERICHOST PyModule_AddIntConstant(m, "AI_NUMERICHOST", AI_NUMERICHOST); #endif #ifdef AI_NUMERICSERV PyModule_AddIntConstant(m, "AI_NUMERICSERV", AI_NUMERICSERV); #endif #ifdef AI_MASK PyModule_AddIntConstant(m, "AI_MASK", AI_MASK); #endif #ifdef AI_ALL PyModule_AddIntConstant(m, "AI_ALL", AI_ALL); #endif #ifdef AI_V4MAPPED_CFG PyModule_AddIntConstant(m, "AI_V4MAPPED_CFG", AI_V4MAPPED_CFG); #endif #ifdef AI_ADDRCONFIG PyModule_AddIntConstant(m, "AI_ADDRCONFIG", AI_ADDRCONFIG); #endif #ifdef AI_V4MAPPED PyModule_AddIntConstant(m, "AI_V4MAPPED", AI_V4MAPPED); #endif #ifdef AI_DEFAULT PyModule_AddIntConstant(m, "AI_DEFAULT", AI_DEFAULT); #endif #ifdef NI_MAXHOST PyModule_AddIntConstant(m, "NI_MAXHOST", NI_MAXHOST); #endif #ifdef NI_MAXSERV PyModule_AddIntConstant(m, "NI_MAXSERV", NI_MAXSERV); #endif #ifdef NI_NOFQDN PyModule_AddIntConstant(m, "NI_NOFQDN", NI_NOFQDN); #endif #ifdef NI_NUMERICHOST PyModule_AddIntConstant(m, "NI_NUMERICHOST", NI_NUMERICHOST); #endif #ifdef NI_NAMEREQD PyModule_AddIntConstant(m, "NI_NAMEREQD", NI_NAMEREQD); #endif #ifdef NI_NUMERICSERV PyModule_AddIntConstant(m, "NI_NUMERICSERV", NI_NUMERICSERV); #endif #ifdef NI_DGRAM PyModule_AddIntConstant(m, "NI_DGRAM", NI_DGRAM); #endif /* shutdown() parameters */ #ifdef SHUT_RD PyModule_AddIntConstant(m, "SHUT_RD", SHUT_RD); #elif defined(SD_RECEIVE) PyModule_AddIntConstant(m, "SHUT_RD", SD_RECEIVE); #else PyModule_AddIntConstant(m, "SHUT_RD", 0); #endif #ifdef SHUT_WR PyModule_AddIntConstant(m, "SHUT_WR", SHUT_WR); #elif defined(SD_SEND) PyModule_AddIntConstant(m, "SHUT_WR", SD_SEND); #else PyModule_AddIntConstant(m, "SHUT_WR", 1); #endif #ifdef SHUT_RDWR PyModule_AddIntConstant(m, "SHUT_RDWR", SHUT_RDWR); #elif defined(SD_BOTH) PyModule_AddIntConstant(m, "SHUT_RDWR", SD_BOTH); #else PyModule_AddIntConstant(m, "SHUT_RDWR", 2); #endif #ifdef SIO_RCVALL { DWORD codes[] = {SIO_RCVALL, SIO_KEEPALIVE_VALS}; const char *names[] = {"SIO_RCVALL", "SIO_KEEPALIVE_VALS"}; int i; for(i = 0; i