/* 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 is supported under Linux. - no read/write operations (use sendall/recv or makefile instead) - additional restrictions apply on Windows (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.socket(family, type [, proto]) --> new socket object - 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.inet_aton(IP address) -> 32-bit packed IP representation - socket.inet_ntoa(packed IP) -> IP address string - 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 -- these are ignored by networking code, but accepted since they are returned by the getsockname() method. Socket methods: - s.accept() --> new socket object, sockaddr - s.bind(sockaddr) --> None - s.close() --> None - s.connect(sockaddr) --> None - s.connect_ex(sockaddr) --> 0 or errno (handy for e.g. async connect) - s.fileno() --> file descriptor - s.dup() --> same as socket.fromfd(os.dup(s.fileno(), ...) - s.getpeername() --> sockaddr - s.getsockname() --> sockaddr - s.getsockopt(level, optname[, buflen]) --> int or string - s.listen(backlog) --> None - s.makefile([mode[, bufsize]]) --> file object - s.recv(buflen [,flags]) --> string - s.recvfrom(buflen [,flags]) --> string, sockaddr - s.send(string [,flags]) --> nbytes - s.sendall(string [,flags]) # tries to send everything in a loop - s.sendto(string, [flags,] sockaddr) --> nbytes - s.setblocking(0 | 1) --> None - s.setsockopt(level, optname, value) --> None - s.shutdown(how) --> None - repr(s) --> "" */ #include "Python.h" /* XXX This is a terrible mess of 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 #ifndef WITH_THREAD # undef HAVE_GETHOSTBYNAME_R #endif #ifdef HAVE_GETHOSTBYNAME_R # if defined(_AIX) || defined(__osf__) # 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 #ifdef USE_GETHOSTBYNAME_LOCK # include "pythread.h" #endif #if defined(PYCC_VACPP) # include # include # include # include # include #endif #if defined(PYOS_OS2) # define INCL_DOS # define INCL_DOSERRORS # define INCL_NOPMAPI # include #endif /* Generic includes */ #include #include /* Generic socket object definitions and includes */ #define PySocket_BUILDING_SOCKET #include "socketmodule.h" /* Addressing includes */ #ifndef MS_WINDOWS /* Non-MS WINDOWS includes */ # include /* Headers needed for inet_ntoa() and inet_addr() */ # ifdef __BEOS__ # include # elif defined(PYOS_OS2) && defined(PYCC_VACPP) # include typedef size_t socklen_t; # else # ifndef USE_GUSI1 # include # endif # endif # ifndef RISCOS # include # else # include # define NO_DUP int h_errno; /* not used */ # endif #else /* MS_WINDOWS includes */ # include #endif #ifdef HAVE_STDDEF_H # include #endif #ifndef offsetof # define offsetof(type, member) ((size_t)(&((type *)0)->member)) #endif #ifndef O_NDELAY # define O_NDELAY O_NONBLOCK /* For QNX only? */ #endif #ifdef USE_GUSI1 /* fdopen() isn't declared in stdio.h (sigh) */ # include #endif #include "addrinfo.h" #ifndef HAVE_INET_PTON 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 #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. */ #undef HAVE_GETADDRINFO /* avoid clashes with the C library definition of the symbol. */ #define getaddrinfo fake_getaddrinfo #endif /* I know this is a bad practice, but it is the easiest... */ #if !defined(HAVE_GETADDRINFO) #include "getaddrinfo.c" #endif #if !defined(HAVE_GETNAMEINFO) #include "getnameinfo.c" #endif #if defined(MS_WINDOWS) || defined(__BEOS__) /* BeOS suffers from the same socket dichotomy as Win32... - [cjh] */ /* seem to be a few differences in the API */ #define SOCKETCLOSE closesocket #define NO_DUP /* Actually it exists on NT 3.5, but what the heck... */ #endif #ifdef MS_WIN32 # define EAFNOSUPPORT WSAEAFNOSUPPORT # define snprintf _snprintf #endif #if defined(PYOS_OS2) #define SOCKETCLOSE soclose #define NO_DUP /* Sockets are Not Actual File Handles under OS/2 */ #endif #ifndef SOCKETCLOSE #define SOCKETCLOSE close #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 *PySocket_Error; static PyObject *PyH_Error; static PyObject *PyGAI_Error; #ifdef RISCOS /* Global variable which is !=0 if Python is running in a RISC OS taskwindow */ static int taskwindow; #endif /* Convenience function to raise an error according to errno and return a NULL pointer from a function. */ static PyObject * PySocket_Err(void) { #ifdef MS_WINDOWS int err_no = WSAGetLastError(); if (err_no) { static struct { int no; const char *msg; } *msgp, msgs[] = { { WSAEINTR, "Interrupted system call" }, { WSAEBADF, "Bad file descriptor" }, { WSAEACCES, "Permission denied" }, { WSAEFAULT, "Bad address" }, { WSAEINVAL, "Invalid argument" }, { WSAEMFILE, "Too many open files" }, { WSAEWOULDBLOCK, "The socket operation could not complete " "without blocking" }, { WSAEINPROGRESS, "Operation now in progress" }, { WSAEALREADY, "Operation already in progress" }, { WSAENOTSOCK, "Socket operation on non-socket" }, { WSAEDESTADDRREQ, "Destination address required" }, { WSAEMSGSIZE, "Message too long" }, { WSAEPROTOTYPE, "Protocol wrong type for socket" }, { WSAENOPROTOOPT, "Protocol not available" }, { WSAEPROTONOSUPPORT, "Protocol not supported" }, { WSAESOCKTNOSUPPORT, "Socket type not supported" }, { WSAEOPNOTSUPP, "Operation not supported" }, { WSAEPFNOSUPPORT, "Protocol family not supported" }, { WSAEAFNOSUPPORT, "Address family not supported" }, { WSAEADDRINUSE, "Address already in use" }, { WSAEADDRNOTAVAIL, "Can't assign requested address" }, { WSAENETDOWN, "Network is down" }, { WSAENETUNREACH, "Network is unreachable" }, { WSAENETRESET, "Network dropped connection on reset" }, { WSAECONNABORTED, "Software caused connection abort" }, { WSAECONNRESET, "Connection reset by peer" }, { WSAENOBUFS, "No buffer space available" }, { WSAEISCONN, "Socket is already connected" }, { WSAENOTCONN, "Socket is not connected" }, { WSAESHUTDOWN, "Can't send after socket shutdown" }, { WSAETOOMANYREFS, "Too many references: can't splice" }, { WSAETIMEDOUT, "Operation timed out" }, { WSAECONNREFUSED, "Connection refused" }, { WSAELOOP, "Too many levels of symbolic links" }, { WSAENAMETOOLONG, "File name too long" }, { WSAEHOSTDOWN, "Host is down" }, { WSAEHOSTUNREACH, "No route to host" }, { WSAENOTEMPTY, "Directory not empty" }, { WSAEPROCLIM, "Too many processes" }, { WSAEUSERS, "Too many users" }, { WSAEDQUOT, "Disc quota exceeded" }, { WSAESTALE, "Stale NFS file handle" }, { WSAEREMOTE, "Too many levels of remote in path" }, { WSASYSNOTREADY, "Network subsystem is unvailable" }, { WSAVERNOTSUPPORTED, "WinSock version is not supported" }, { WSANOTINITIALISED, "Successful WSAStartup() not yet performed" }, { WSAEDISCON, "Graceful shutdown in progress" }, /* Resolver errors */ { WSAHOST_NOT_FOUND, "No such host is known" }, { WSATRY_AGAIN, "Host not found, or server failed" }, { WSANO_RECOVERY, "Unexpected server error encountered" }, { WSANO_DATA, "Valid name without requested data" }, { WSANO_ADDRESS, "No address, look for MX record" }, { 0, NULL } }; PyObject *v; const char *msg = "winsock error"; for (msgp = msgs; msgp->msg; msgp++) { if (err_no == msgp->no) { msg = msgp->msg; break; } } v = Py_BuildValue("(is)", err_no, msg); if (v != NULL) { PyErr_SetObject(PySocket_Error, v); Py_DECREF(v); } return NULL; } else #endif #if defined(PYOS_OS2) 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; outbuf[msglen] = '\0'; /* OS/2 Doesn't Guarantee a Terminator */ if (strlen(outbuf) > 0) { /* If Non-Empty Msg, Trim CRLF */ char *lastc = &outbuf[ strlen(outbuf)-1 ]; while (lastc > outbuf && isspace(*lastc)) *lastc-- = '\0'; /* Trim Trailing Whitespace (CRLF) */ } v = Py_BuildValue("(is)", myerrorcode, outbuf); if (v != NULL) { PyErr_SetObject(PySocket_Error, v); Py_DECREF(v); } return NULL; } } #endif return PyErr_SetFromErrno(PySocket_Error); } static PyObject * PyH_Err(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(PyH_Error, v); Py_DECREF(v); } return NULL; } static PyObject * PyGAI_Err(int error) { PyObject *v; if (error == EAI_SYSTEM) return PySocket_Err(); #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(PyGAI_Error, v); Py_DECREF(v); } return NULL; } /* Initialize a new socket object. */ static void init_sockobject(PySocketSockObject *s, SOCKET_T fd, int family, int type, int proto) { #ifdef RISCOS int block = 1; #endif s->sock_fd = fd; s->sock_family = family; s->sock_type = type; s->sock_proto = proto; s->errorhandler = &PySocket_Err; #ifdef RISCOS if(taskwindow) { socketioctl(s->sock_fd, 0x80046679, (u_long*)&block); } #endif } /* 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 * PySocketSock_New(SOCKET_T fd, int family, int type, int proto) { PySocketSockObject *s; s = (PySocketSockObject *) PyType_GenericNew(&PySocketSock_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 */ #ifdef USE_GETHOSTBYNAME_LOCK PyThread_type_lock gethostbyname_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, int af) { struct addrinfo hints, *res; int error; 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; error = getaddrinfo(NULL, "0", &hints, &res); if (error) { PyGAI_Err(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(PySocket_Error, "unsupported address family"); return -1; } if (res->ai_next) { freeaddrinfo(res); PyErr_SetString(PySocket_Error, "wildcard resolved to multiple address"); return -1; } memcpy(addr_ret, res->ai_addr, res->ai_addrlen); freeaddrinfo(res); return siz; } if (name[0] == '<' && strcmp(name, "") == 0) { struct sockaddr_in *sin; if (af != PF_INET && af != PF_UNSPEC) { PyErr_SetString(PySocket_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); } memset(&hints, 0, sizeof(hints)); hints.ai_family = af; 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 if (error) { PyGAI_Err(error); return -1; } memcpy((char *) addr_ret, res->ai_addr, res->ai_addrlen); freeaddrinfo(res); switch (addr_ret->sa_family) { case AF_INET: return 4; #ifdef ENABLE_IPV6 case AF_INET6: return 16; #endif default: PyErr_SetString(PySocket_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) { PyGAI_Err(error); return NULL; } return PyString_FromString(buf); } /* 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(int sockfd, struct sockaddr *addr, int addrlen) { if (addrlen == 0) { /* No address -- may be recvfrom() from known socket */ Py_INCREF(Py_None); return Py_None; } #ifdef __BEOS__ /* XXX: BeOS version of accept() doesn't set family correctly */ addr->sa_family = AF_INET; #endif 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; } #ifdef AF_UNIX case AF_UNIX: { struct sockaddr_un *a = (struct sockaddr_un *) addr; return PyString_FromString(a->sun_path); } #endif /* AF_UNIX */ #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 HAVE_NETPACKET_PACKET_H 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("shbhs#", ifname, ntohs(a->sll_protocol), a->sll_pkttype, a->sll_hatype, a->sll_addr, a->sll_halen); } #endif /* More cases here... */ default: /* If we don't know the address family, don't raise an exception -- return it as a tuple. */ return Py_BuildValue("is#", 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) { #ifdef AF_UNIX case AF_UNIX: { struct sockaddr_un* addr; char *path; int len; addr = (struct sockaddr_un* )&(s->sock_addr).un; if (!PyArg_Parse(args, "t#", &path, &len)) return 0; if (len > sizeof addr->sun_path) { PyErr_SetString(PySocket_Error, "AF_UNIX path too long"); return 0; } addr->sun_family = s->sock_family; memcpy(addr->sun_path, path, len); addr->sun_path[len] = 0; *addr_ret = (struct sockaddr *) addr; *len_ret = len + sizeof(*addr) - sizeof(addr->sun_path); return 1; } #endif /* AF_UNIX */ case AF_INET: { struct sockaddr_in* addr; char *host; int port; addr=(struct sockaddr_in*)&(s->sock_addr).in; if (!PyTuple_Check(args)) { PyErr_Format(PyExc_TypeError, "getsockaddrarg: AF_INET address must be tuple, not %.500s", args->ob_type->tp_name); return 0; } if (!PyArg_ParseTuple(args, "si:getsockaddrarg", &host, &port)) return 0; if (setipaddr(host, (struct sockaddr *)addr, AF_INET) < 0) return 0; addr->sin_family = AF_INET; addr->sin_port = htons((short)port); *addr_ret = (struct sockaddr *) addr; *len_ret = sizeof *addr; return 1; } #ifdef ENABLE_IPV6 case AF_INET6: { struct sockaddr_in6* addr; char *host; int port, flowinfo, scope_id; addr = (struct sockaddr_in6*)&(s->sock_addr).in6; flowinfo = scope_id = 0; if (!PyArg_ParseTuple(args, "si|ii", &host, &port, &flowinfo, &scope_id)) { return 0; } if (setipaddr(host, (struct sockaddr *)addr, AF_INET6) < 0) return 0; addr->sin6_family = s->sock_family; addr->sin6_port = htons((short)port); addr->sin6_flowinfo = flowinfo; addr->sin6_scope_id = scope_id; *addr_ret = (struct sockaddr *) addr; *len_ret = sizeof *addr; return 1; } #endif #ifdef HAVE_NETPACKET_PACKET_H case AF_PACKET: { struct sockaddr_ll* addr; struct ifreq ifr; char *interfaceName; int protoNumber; int hatype = 0; int pkttype = 0; char *haddr; if (!PyArg_ParseTuple(args, "si|iis", &interfaceName, &protoNumber, &pkttype, &hatype, &haddr)) 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; } addr = &(s->sock_addr.ll); 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; *addr_ret = (struct sockaddr *) addr; *len_ret = sizeof *addr; return 1; } #endif /* More cases here... */ default: PyErr_SetString(PySocket_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) { #ifdef AF_UNIX case AF_UNIX: { *len_ret = sizeof (struct sockaddr_un); return 1; } #endif /* AF_UNIX */ 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 HAVE_NETPACKET_PACKET_H case AF_PACKET: { *len_ret = sizeof (struct sockaddr_ll); return 1; } #endif /* More cases here... */ default: PyErr_SetString(PySocket_Error, "getsockaddrlen: bad family"); return 0; } } /* s.accept() method */ static PyObject * PySocketSock_accept(PySocketSockObject *s) { char addrbuf[256]; SOCKET_T newfd; socklen_t addrlen; PyObject *sock = NULL; PyObject *addr = NULL; PyObject *res = NULL; if (!getsockaddrlen(s, &addrlen)) return NULL; memset(addrbuf, 0, addrlen); Py_BEGIN_ALLOW_THREADS newfd = accept(s->sock_fd, (struct sockaddr *) addrbuf, &addrlen); Py_END_ALLOW_THREADS #ifdef MS_WINDOWS if (newfd == INVALID_SOCKET) #else if (newfd < 0) #endif return s->errorhandler(); /* Create the new object with unspecified family, to avoid calls to bind() etc. on it. */ sock = (PyObject *) PySocketSock_New(newfd, s->sock_family, s->sock_type, s->sock_proto); if (sock == NULL) { SOCKETCLOSE(newfd); goto finally; } addr = makesockaddr(s->sock_fd, (struct sockaddr *)addrbuf, addrlen); if (addr == NULL) goto finally; res = Py_BuildValue("OO", sock, addr); finally: Py_XDECREF(sock); Py_XDECREF(addr); return res; } static char accept_doc[] = "accept() -> (socket object, address info)\n\ \n\ Wait for an incoming connection. Return a new socket representing the\n\ connection, and the address of the client. For IP sockets, the address\n\ info is a pair (hostaddr, port)."; /* s.setblocking(1 | 0) method */ static PyObject * PySocketSock_setblocking(PySocketSockObject *s, PyObject *arg) { int block; #ifndef RISCOS #ifndef MS_WINDOWS int delay_flag; #endif #endif block = PyInt_AsLong(arg); if (block == -1 && PyErr_Occurred()) return NULL; Py_BEGIN_ALLOW_THREADS #ifdef __BEOS__ block = !block; setsockopt( s->sock_fd, SOL_SOCKET, SO_NONBLOCK, (void *)(&block), sizeof( int ) ); #else #ifndef RISCOS #ifndef MS_WINDOWS #ifdef PYOS_OS2 block = !block; ioctl(s->sock_fd, FIONBIO, (caddr_t)&block, sizeof(block)); #else /* !PYOS_OS2 */ delay_flag = fcntl (s->sock_fd, F_GETFL, 0); if (block) delay_flag &= (~O_NDELAY); else delay_flag |= O_NDELAY; 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 */ #endif /* __BEOS__ */ #endif /* RISCOS */ Py_END_ALLOW_THREADS Py_INCREF(Py_None); return Py_None; } static char setblocking_doc[] = "setblocking(flag)\n\ \n\ Set the socket to blocking (flag is true) or non-blocking (false).\n\ This uses the FIONBIO ioctl with the O_NDELAY flag."; #ifdef RISCOS /* s.sleeptaskw(1 | 0) method */ static PyObject * PySocketSock_sleeptaskw(PySocketSockObject *s,PyObject *args) { int block; int delay_flag; if (!PyArg_GetInt(args, &block)) return NULL; Py_BEGIN_ALLOW_THREADS socketioctl(s->sock_fd, 0x80046679, (u_long*)&block); Py_END_ALLOW_THREADS Py_INCREF(Py_None); return Py_None; } static char sleeptaskw_doc[] = "sleeptaskw(flag)\n\ \n\ Allow sleeps in taskwindows."; #endif /* 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 * PySocketSock_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, "iis#: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; } static char 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 * PySocketSock_getsockopt(PySocketSockObject *s, PyObject *args) { int level; int optname; int res; PyObject *buf; socklen_t buflen = 0; #ifdef __BEOS__ /* We have incomplete socket support. */ PyErr_SetString(PySocket_Error, "getsockopt not supported"); return NULL; #else 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 PyInt_FromLong(flag); } if (buflen <= 0 || buflen > 1024) { PyErr_SetString(PySocket_Error, "getsockopt buflen out of range"); return NULL; } buf = PyString_FromStringAndSize((char *)NULL, buflen); if (buf == NULL) return NULL; res = getsockopt(s->sock_fd, level, optname, (void *)PyString_AS_STRING(buf), &buflen); if (res < 0) { Py_DECREF(buf); return s->errorhandler(); } _PyString_Resize(&buf, buflen); return buf; #endif /* __BEOS__ */ } static char 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 * PySocketSock_bind(PySocketSockObject *s, PyObject *addro) { struct sockaddr *addr; int addrlen; int res; if (!getsockaddrarg(s, addro, &addr, &addrlen)) return NULL; Py_BEGIN_ALLOW_THREADS res = bind(s->sock_fd, addr, addrlen); Py_END_ALLOW_THREADS if (res < 0) return s->errorhandler(); Py_INCREF(Py_None); return Py_None; } static char 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 * PySocketSock_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; } static char close_doc[] = "close()\n\ \n\ Close the socket. It cannot be used after this call."; /* s.connect(sockaddr) method */ static PyObject * PySocketSock_connect(PySocketSockObject *s, PyObject *addro) { struct sockaddr *addr; int addrlen; int res; if (!getsockaddrarg(s, addro, &addr, &addrlen)) return NULL; Py_BEGIN_ALLOW_THREADS res = connect(s->sock_fd, addr, addrlen); Py_END_ALLOW_THREADS if (res < 0) return s->errorhandler(); Py_INCREF(Py_None); return Py_None; } static char 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 * PySocketSock_connect_ex(PySocketSockObject *s, PyObject *addro) { struct sockaddr *addr; int addrlen; int res; if (!getsockaddrarg(s, addro, &addr, &addrlen)) return NULL; Py_BEGIN_ALLOW_THREADS res = connect(s->sock_fd, addr, addrlen); Py_END_ALLOW_THREADS if (res != 0) { #ifdef MS_WINDOWS res = WSAGetLastError(); #else res = errno; #endif } return PyInt_FromLong((long) res); } static char connect_ex_doc[] = "connect_ex(address)\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 * PySocketSock_fileno(PySocketSockObject *s) { #if SIZEOF_SOCKET_T <= SIZEOF_LONG return PyInt_FromLong((long) s->sock_fd); #else return PyLong_FromLongLong((LONG_LONG)s->sock_fd); #endif } static char fileno_doc[] = "fileno() -> integer\n\ \n\ Return the integer file descriptor of the socket."; #ifndef NO_DUP /* s.dup() method */ static PyObject * PySocketSock_dup(PySocketSockObject *s) { SOCKET_T newfd; PyObject *sock; newfd = dup(s->sock_fd); if (newfd < 0) return s->errorhandler(); sock = (PyObject *) PySocketSock_New(newfd, s->sock_family, s->sock_type, s->sock_proto); if (sock == NULL) SOCKETCLOSE(newfd); return sock; } static char dup_doc[] = "dup() -> socket object\n\ \n\ Return a new socket object connected to the same system resource."; #endif /* s.getsockname() method */ static PyObject * PySocketSock_getsockname(PySocketSockObject *s) { char addrbuf[256]; int res; socklen_t addrlen; if (!getsockaddrlen(s, &addrlen)) return NULL; memset(addrbuf, 0, addrlen); Py_BEGIN_ALLOW_THREADS res = getsockname(s->sock_fd, (struct sockaddr *) addrbuf, &addrlen); Py_END_ALLOW_THREADS if (res < 0) return s->errorhandler(); return makesockaddr(s->sock_fd, (struct sockaddr *) addrbuf, addrlen); } static char 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 * PySocketSock_getpeername(PySocketSockObject *s) { char addrbuf[256]; int res; socklen_t addrlen; if (!getsockaddrlen(s, &addrlen)) return NULL; memset(addrbuf, 0, addrlen); Py_BEGIN_ALLOW_THREADS res = getpeername(s->sock_fd, (struct sockaddr *) addrbuf, &addrlen); Py_END_ALLOW_THREADS if (res < 0) return s->errorhandler(); return makesockaddr(s->sock_fd, (struct sockaddr *) addrbuf, addrlen); } static char 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 * PySocketSock_listen(PySocketSockObject *s, PyObject *arg) { int backlog; int res; backlog = PyInt_AsLong(arg); if (backlog == -1 && PyErr_Occurred()) return NULL; Py_BEGIN_ALLOW_THREADS if (backlog < 1) backlog = 1; res = listen(s->sock_fd, backlog); Py_END_ALLOW_THREADS if (res < 0) return s->errorhandler(); Py_INCREF(Py_None); return Py_None; } static char listen_doc[] = "listen(backlog)\n\ \n\ Enable a server to accept connections. The backlog argument must be at\n\ least 1; it specifies the number of unaccepted connection that the system\n\ will allow before refusing new connections."; #ifndef NO_DUP /* s.makefile(mode) method. Create a new open file object referring to a dupped version of the socket's file descriptor. (The dup() call is necessary so that the open file and socket objects may be closed independent of each other.) The mode argument specifies 'r' or 'w' passed to fdopen(). */ static PyObject * PySocketSock_makefile(PySocketSockObject *s, PyObject *args) { extern int fclose(FILE *); char *mode = "r"; int bufsize = -1; #ifdef MS_WIN32 Py_intptr_t fd; #else int fd; #endif FILE *fp; PyObject *f; if (!PyArg_ParseTuple(args, "|si:makefile", &mode, &bufsize)) return NULL; #ifdef MS_WIN32 if (((fd = _open_osfhandle(s->sock_fd, _O_BINARY)) < 0) || ((fd = dup(fd)) < 0) || ((fp = fdopen(fd, mode)) == NULL)) #else if ((fd = dup(s->sock_fd)) < 0 || (fp = fdopen(fd, mode)) == NULL) #endif { if (fd >= 0) SOCKETCLOSE(fd); return s->errorhandler(); } f = PyFile_FromFile(fp, "", mode, fclose); if (f != NULL) PyFile_SetBufSize(f, bufsize); return f; } static char makefile_doc[] = "makefile([mode[, buffersize]]) -> file object\n\ \n\ Return a regular file object corresponding to the socket.\n\ The mode and buffersize arguments are as for the built-in open() function."; #endif /* NO_DUP */ /* s.recv(nbytes [,flags]) method */ static PyObject * PySocketSock_recv(PySocketSockObject *s, PyObject *args) { int len, n, flags = 0; PyObject *buf; if (!PyArg_ParseTuple(args, "i|i:recv", &len, &flags)) return NULL; if (len < 0) { PyErr_SetString(PyExc_ValueError, "negative buffersize in connect"); return NULL; } buf = PyString_FromStringAndSize((char *) 0, len); if (buf == NULL) return NULL; Py_BEGIN_ALLOW_THREADS n = recv(s->sock_fd, PyString_AS_STRING(buf), len, flags); Py_END_ALLOW_THREADS if (n < 0) { Py_DECREF(buf); return s->errorhandler(); } if (n != len && _PyString_Resize(&buf, n) < 0) return NULL; return buf; } static char 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.recvfrom(nbytes [,flags]) method */ static PyObject * PySocketSock_recvfrom(PySocketSockObject *s, PyObject *args) { char addrbuf[256]; PyObject *buf = NULL; PyObject *addr = NULL; PyObject *ret = NULL; int len, n, flags = 0; socklen_t addrlen; if (!PyArg_ParseTuple(args, "i|i:recvfrom", &len, &flags)) return NULL; if (!getsockaddrlen(s, &addrlen)) return NULL; buf = PyString_FromStringAndSize((char *) 0, len); if (buf == NULL) return NULL; Py_BEGIN_ALLOW_THREADS memset(addrbuf, 0, addrlen); n = recvfrom(s->sock_fd, PyString_AS_STRING(buf), len, flags, #ifndef MS_WINDOWS #if defined(PYOS_OS2) (struct sockaddr *)addrbuf, &addrlen #else (void *)addrbuf, &addrlen #endif #else (struct sockaddr *)addrbuf, &addrlen #endif ); Py_END_ALLOW_THREADS if (n < 0) { Py_DECREF(buf); return s->errorhandler(); } if (n != len && _PyString_Resize(&buf, n) < 0) return NULL; if (!(addr = makesockaddr(s->sock_fd, (struct sockaddr *)addrbuf, addrlen))) goto finally; ret = Py_BuildValue("OO", buf, addr); finally: Py_XDECREF(addr); Py_XDECREF(buf); return ret; } static char recvfrom_doc[] = "recvfrom(buffersize[, flags]) -> (data, address info)\n\ \n\ Like recv(buffersize, flags) but also return the sender's address info."; /* s.send(data [,flags]) method */ static PyObject * PySocketSock_send(PySocketSockObject *s, PyObject *args) { char *buf; int len, n, flags = 0; if (!PyArg_ParseTuple(args, "s#|i:send", &buf, &len, &flags)) return NULL; Py_BEGIN_ALLOW_THREADS n = send(s->sock_fd, buf, len, flags); Py_END_ALLOW_THREADS if (n < 0) return s->errorhandler(); return PyInt_FromLong((long)n); } static char 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 * PySocketSock_sendall(PySocketSockObject *s, PyObject *args) { char *buf; int len, n, flags = 0; if (!PyArg_ParseTuple(args, "s#|i:sendall", &buf, &len, &flags)) return NULL; Py_BEGIN_ALLOW_THREADS do { n = send(s->sock_fd, buf, len, flags); if (n < 0) break; buf += n; len -= n; } while (len > 0); Py_END_ALLOW_THREADS if (n < 0) return s->errorhandler(); Py_INCREF(Py_None); return Py_None; } static char 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 * PySocketSock_sendto(PySocketSockObject *s, PyObject *args) { PyObject *addro; char *buf; struct sockaddr *addr; int addrlen, len, n, flags; flags = 0; if (!PyArg_ParseTuple(args, "s#O:sendto", &buf, &len, &addro)) { PyErr_Clear(); if (!PyArg_ParseTuple(args, "s#iO:sendto", &buf, &len, &flags, &addro)) return NULL; } if (!getsockaddrarg(s, addro, &addr, &addrlen)) return NULL; Py_BEGIN_ALLOW_THREADS n = sendto(s->sock_fd, buf, len, flags, addr, addrlen); Py_END_ALLOW_THREADS if (n < 0) return s->errorhandler(); return PyInt_FromLong((long)n); } static char sendto_doc[] = "sendto(data[, flags], address)\n\ \n\ Like send(data, flags) but allows specifying the destination address.\n\ For IP sockets, the address is a pair (hostaddr, port)."; /* s.shutdown(how) method */ static PyObject * PySocketSock_shutdown(PySocketSockObject *s, PyObject *arg) { int how; int res; how = PyInt_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; } static char shutdown_doc[] = "shutdown(flag)\n\ \n\ Shut down the reading side of the socket (flag == 0), the writing side\n\ of the socket (flag == 1), or both ends (flag == 2)."; /* List of methods for socket objects */ static PyMethodDef PySocketSock_methods[] = { {"accept", (PyCFunction)PySocketSock_accept, METH_NOARGS, accept_doc}, {"bind", (PyCFunction)PySocketSock_bind, METH_O, bind_doc}, {"close", (PyCFunction)PySocketSock_close, METH_NOARGS, close_doc}, {"connect", (PyCFunction)PySocketSock_connect, METH_O, connect_doc}, {"connect_ex", (PyCFunction)PySocketSock_connect_ex, METH_O, connect_ex_doc}, #ifndef NO_DUP {"dup", (PyCFunction)PySocketSock_dup, METH_NOARGS, dup_doc}, #endif {"fileno", (PyCFunction)PySocketSock_fileno, METH_NOARGS, fileno_doc}, #ifdef HAVE_GETPEERNAME {"getpeername", (PyCFunction)PySocketSock_getpeername, METH_NOARGS, getpeername_doc}, #endif {"getsockname", (PyCFunction)PySocketSock_getsockname, METH_NOARGS, getsockname_doc}, {"getsockopt", (PyCFunction)PySocketSock_getsockopt, METH_VARARGS, getsockopt_doc}, {"listen", (PyCFunction)PySocketSock_listen, METH_O, listen_doc}, #ifndef NO_DUP {"makefile", (PyCFunction)PySocketSock_makefile, METH_VARARGS, makefile_doc}, #endif {"recv", (PyCFunction)PySocketSock_recv, METH_VARARGS, recv_doc}, {"recvfrom", (PyCFunction)PySocketSock_recvfrom, METH_VARARGS, recvfrom_doc}, {"send", (PyCFunction)PySocketSock_send, METH_VARARGS, send_doc}, {"sendall", (PyCFunction)PySocketSock_sendall, METH_VARARGS, sendall_doc}, {"sendto", (PyCFunction)PySocketSock_sendto, METH_VARARGS, sendto_doc}, {"setblocking", (PyCFunction)PySocketSock_setblocking, METH_O, setblocking_doc}, {"setsockopt", (PyCFunction)PySocketSock_setsockopt, METH_VARARGS, setsockopt_doc}, {"shutdown", (PyCFunction)PySocketSock_shutdown, METH_O, shutdown_doc}, #ifdef RISCOS {"sleeptaskw", (PyCFunction)PySocketSock_sleeptaskw, METH_VARARGS, sleeptaskw_doc}, #endif {NULL, NULL} /* sentinel */ }; /* Deallocate a socket object in response to the last Py_DECREF(). First close the file description. */ static void PySocketSock_dealloc(PySocketSockObject *s) { if (s->sock_fd != -1) (void) SOCKETCLOSE(s->sock_fd); s->ob_type->tp_free((PyObject *)s); } static PyObject * PySocketSock_repr(PySocketSockObject *s) { char buf[512]; #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 PyOS_snprintf(buf, sizeof(buf), "", (long)s->sock_fd, s->sock_family, s->sock_type, s->sock_proto); return PyString_FromString(buf); } /* Create a new, uninitialized socket object. */ static PyObject * PySocketSock_new(PyTypeObject *type, PyObject *args, PyObject *kwds) { PyObject *new; new = type->tp_alloc(type, 0); if (new != NULL) ((PySocketSockObject *)new)->sock_fd = -1; return new; } /* Initialize a new socket object. */ /*ARGSUSED*/ static int PySocketSock_init(PyObject *self, PyObject *args, PyObject *kwds) { PySocketSockObject *s = (PySocketSockObject *)self; SOCKET_T fd; int family = AF_INET, type = SOCK_STREAM, proto = 0; static char *keywords[] = {"family", "type", "proto", 0}; if (!PyArg_ParseTupleAndKeywords(args, kwds, "|iii:socket", keywords, &family, &type, &proto)) return -1; Py_BEGIN_ALLOW_THREADS fd = socket(family, type, proto); Py_END_ALLOW_THREADS #ifdef MS_WINDOWS if (fd == INVALID_SOCKET) #else if (fd < 0) #endif { PySocket_Err(); return -1; } init_sockobject(s, fd, family, type, proto); /* From now on, ignore SIGPIPE and let the error checking do the work. */ #ifdef SIGPIPE (void) signal(SIGPIPE, SIG_IGN); #endif return 0; } /* Type object for socket objects. */ static char socket_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.\n\ \n\ A socket represents one endpoint of a network connection.\n\ \n\ Methods:\n\ \n\ accept() -- accept a connection, returning new socket and client address\n\ bind() -- bind the socket to a local address\n\ close() -- close the socket\n\ connect() -- connect the socket to a remote address\n\ connect_ex() -- connect, return an error code instead of an exception \n\ dup() -- return a new socket object identical to the current one (*)\n\ fileno() -- return underlying file descriptor\n\ getpeername() -- return remote address (*)\n\ getsockname() -- return local address\n\ getsockopt() -- get socket options\n\ listen() -- start listening for incoming connections\n\ makefile() -- return a file object corresponding to the socket (*)\n\ recv() -- receive data\n\ recvfrom() -- receive data and sender's address\n\ send() -- send data, may not send all of it\n\ sendall() -- send all data\n\ sendto() -- send data to a given address\n\ setblocking() -- set or clear the blocking I/O flag\n\ setsockopt() -- set socket options\n\ shutdown() -- shut down traffic in one or both directions\n\ \n\ (*) not available on all platforms!)"; static PyTypeObject PySocketSock_Type = { PyObject_HEAD_INIT(0) /* Must fill in type value later */ 0, /* ob_size */ "_socket.socket", /* tp_name */ sizeof(PySocketSockObject), /* tp_basicsize */ 0, /* tp_itemsize */ (destructor)PySocketSock_dealloc, /* tp_dealloc */ 0, /* tp_print */ 0, /* tp_getattr */ 0, /* tp_setattr */ 0, /* tp_compare */ (reprfunc)PySocketSock_repr, /* tp_repr */ 0, /* tp_as_number */ 0, /* tp_as_sequence */ 0, /* tp_as_mapping */ 0, /* tp_hash */ 0, /* tp_call */ 0, /* tp_str */ 0, /* set below */ /* tp_getattro */ 0, /* tp_setattro */ 0, /* tp_as_buffer */ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */ socket_doc, /* tp_doc */ 0, /* tp_traverse */ 0, /* tp_clear */ 0, /* tp_richcompare */ 0, /* tp_weaklistoffset */ 0, /* tp_iter */ 0, /* tp_iternext */ PySocketSock_methods, /* tp_methods */ 0, /* tp_members */ 0, /* tp_getset */ 0, /* tp_base */ 0, /* tp_dict */ 0, /* tp_descr_get */ 0, /* tp_descr_set */ 0, /* tp_dictoffset */ PySocketSock_init, /* tp_init */ 0, /* set below */ /* tp_alloc */ PySocketSock_new, /* tp_new */ 0, /* set below */ /* tp_free */ }; /* Python interface to gethostname(). */ /*ARGSUSED*/ static PyObject * PySocket_gethostname(PyObject *self, PyObject *args) { char buf[1024]; int res; if (!PyArg_ParseTuple(args, ":gethostname")) return NULL; Py_BEGIN_ALLOW_THREADS res = gethostname(buf, (int) sizeof buf - 1); Py_END_ALLOW_THREADS if (res < 0) return PySocket_Err(); buf[sizeof buf - 1] = '\0'; return PyString_FromString(buf); } static char gethostname_doc[] = "gethostname() -> string\n\ \n\ Return the current host name."; /* Python interface to gethostbyname(name). */ /*ARGSUSED*/ static PyObject * PySocket_gethostbyname(PyObject *self, PyObject *args) { char *name; struct sockaddr_storage addrbuf; if (!PyArg_ParseTuple(args, "s:gethostbyname", &name)) return NULL; if (setipaddr(name, (struct sockaddr *)&addrbuf, AF_INET) < 0) return NULL; return makeipaddr((struct sockaddr *)&addrbuf, sizeof(struct sockaddr_in)); } static char 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 */ #ifndef RISCOS PyH_Err(h_errno); #else PyErr_SetString(PySocket_Error, "host not found"); #endif return NULL; } if (h->h_addrtype != af) { #ifdef HAVE_STRERROR /* Let's get real error message to return */ PyErr_SetString(PySocket_Error, (char *)strerror(EAFNOSUPPORT)); #else PyErr_SetString(PySocket_Error, "Address family not supported by protocol family"); #endif 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; for (pch = h->h_aliases; *pch != NULL; pch++) { int status; tmp = PyString_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(PySocket_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 * PySocket_gethostbyname_ex(PyObject *self, PyObject *args) { char *name; struct hostent *h; struct sockaddr_storage addr; struct sockaddr *sa; PyObject *ret; #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, "s:gethostbyname_ex", &name)) return NULL; if (setipaddr(name, (struct sockaddr *)&addr, PF_INET) < 0) return NULL; 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(gethostbyname_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(gethostbyname_lock); #endif return ret; } static char 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 * PySocket_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; #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 */ char *ap; int al; int af; if (!PyArg_ParseTuple(args, "s:gethostbyaddr", &ip_num)) return NULL; af = PF_UNSPEC; if (setipaddr(ip_num, sa, af) < 0) return NULL; 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(PySocket_Error, "unsupported address family"); return NULL; } 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(gethostbyname_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(gethostbyname_lock); #endif return ret; } static char 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 * PySocket_getservbyname(PyObject *self, PyObject *args) { char *name, *proto; struct servent *sp; if (!PyArg_ParseTuple(args, "ss:getservbyname", &name, &proto)) return NULL; Py_BEGIN_ALLOW_THREADS sp = getservbyname(name, proto); Py_END_ALLOW_THREADS if (sp == NULL) { PyErr_SetString(PySocket_Error, "service/proto not found"); return NULL; } return PyInt_FromLong((long) ntohs(sp->s_port)); } static char getservbyname_doc[] = "getservbyname(servicename, protocolname) -> integer\n\ \n\ Return a port number from a service name and protocol name.\n\ The protocol name should be 'tcp' or 'udp'."; /* 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 * PySocket_getprotobyname(PyObject *self, PyObject *args) { char *name; struct protoent *sp; #ifdef __BEOS__ /* Not available in BeOS yet. - [cjh] */ PyErr_SetString( PySocket_Error, "getprotobyname not supported" ); return NULL; #else 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(PySocket_Error, "protocol not found"); return NULL; } return PyInt_FromLong((long) sp->p_proto); #endif } static char getprotobyname_doc[] = "getprotobyname(name) -> integer\n\ \n\ Return the protocol number for the named protocol. (Rarely used.)"; #ifndef NO_DUP /* Create a socket object from a numeric file description. Useful e.g. if stdin is a socket. Additional arguments as for socket(). */ /*ARGSUSED*/ static PyObject * PySocket_fromfd(PyObject *self, PyObject *args) { PySocketSockObject *s; SOCKET_T fd; int family, type, proto = 0; if (!PyArg_ParseTuple(args, "iii|i:fromfd", &fd, &family, &type, &proto)) return NULL; /* Dup the fd so it and the socket can be closed independently */ fd = dup(fd); if (fd < 0) return PySocket_Err(); s = PySocketSock_New(fd, family, type, proto); /* From now on, ignore SIGPIPE and let the error checking do the work. */ #ifdef SIGPIPE (void) signal(SIGPIPE, SIG_IGN); #endif return (PyObject *) s; } static char fromfd_doc[] = "fromfd(fd, family, type[, proto]) -> socket object\n\ \n\ Create a socket object from the given file descriptor.\n\ The remaining arguments are the same as for socket()."; #endif /* NO_DUP */ static PyObject * PySocket_ntohs(PyObject *self, PyObject *args) { int x1, x2; if (!PyArg_ParseTuple(args, "i:ntohs", &x1)) { return NULL; } x2 = (int)ntohs((short)x1); return PyInt_FromLong(x2); } static char ntohs_doc[] = "ntohs(integer) -> integer\n\ \n\ Convert a 16-bit integer from network to host byte order."; static PyObject * PySocket_ntohl(PyObject *self, PyObject *args) { int x1, x2; if (!PyArg_ParseTuple(args, "i:ntohl", &x1)) { return NULL; } x2 = ntohl(x1); return PyInt_FromLong(x2); } static char ntohl_doc[] = "ntohl(integer) -> integer\n\ \n\ Convert a 32-bit integer from network to host byte order."; static PyObject * PySocket_htons(PyObject *self, PyObject *args) { int x1, x2; if (!PyArg_ParseTuple(args, "i:htons", &x1)) { return NULL; } x2 = (int)htons((short)x1); return PyInt_FromLong(x2); } static char htons_doc[] = "htons(integer) -> integer\n\ \n\ Convert a 16-bit integer from host to network byte order."; static PyObject * PySocket_htonl(PyObject *self, PyObject *args) { int x1, x2; if (!PyArg_ParseTuple(args, "i:htonl", &x1)) { return NULL; } x2 = htonl(x1); return PyInt_FromLong(x2); } static char 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 * * written 20 Aug 1999 by Ben Gertzfield <- blame him! * */ static char inet_aton_doc[] = "inet_aton(string) -> 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* PySocket_inet_aton(PyObject *self, PyObject *args) { #ifndef INADDR_NONE #define INADDR_NONE (-1) #endif /* Have to use inet_addr() instead */ char *ip_addr; unsigned long packed_addr; if (!PyArg_ParseTuple(args, "s:inet_aton", &ip_addr)) { return NULL; } #ifdef USE_GUSI1 packed_addr = inet_addr(ip_addr).s_addr; #else packed_addr = inet_addr(ip_addr); #endif if (packed_addr == INADDR_NONE) { /* invalid address */ PyErr_SetString(PySocket_Error, "illegal IP address string passed to inet_aton"); return NULL; } return PyString_FromStringAndSize((char *) &packed_addr, sizeof(packed_addr)); } static char 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* PySocket_inet_ntoa(PyObject *self, PyObject *args) { char *packed_str; int addr_len; struct in_addr packed_addr; if (!PyArg_ParseTuple(args, "s#:inet_ntoa", &packed_str, &addr_len)) { return NULL; } if (addr_len != sizeof(packed_addr)) { PyErr_SetString(PySocket_Error, "packed IP wrong length for inet_ntoa"); return NULL; } memcpy(&packed_addr, packed_str, addr_len); return PyString_FromString(inet_ntoa(packed_addr)); } /* Python interface to getaddrinfo(host, port). */ /*ARGSUSED*/ static PyObject * PySocket_getaddrinfo(PyObject *self, PyObject *args) { struct addrinfo hints, *res; struct addrinfo *res0 = NULL; PyObject *pobj = (PyObject *)NULL; char pbuf[30]; char *hptr, *pptr; int family, socktype, protocol, flags; int error; PyObject *all = (PyObject *)NULL; PyObject *single = (PyObject *)NULL; family = socktype = protocol = flags = 0; family = PF_UNSPEC; if (!PyArg_ParseTuple(args, "zO|iiii:getaddrinfo", &hptr, &pobj, &family, &socktype, &protocol, &flags)) { return NULL; } if (PyInt_Check(pobj)) { PyOS_snprintf(pbuf, sizeof(pbuf), "%ld", PyInt_AsLong(pobj)); pptr = pbuf; } else if (PyString_Check(pobj)) { pptr = PyString_AsString(pobj); } else if (pobj == Py_None) { pptr = (char *)NULL; } else { PyErr_SetString(PySocket_Error, "Int or String expected"); return NULL; } memset(&hints, 0, sizeof(hints)); hints.ai_family = family; hints.ai_socktype = socktype; hints.ai_protocol = protocol; hints.ai_flags = flags; error = getaddrinfo(hptr, pptr, &hints, &res0); if (error) { PyGAI_Err(error); return NULL; } if ((all = PyList_New(0)) == NULL) goto err; for (res = res0; res; res = res->ai_next) { PyObject *addr = makesockaddr(-1, res->ai_addr, res->ai_addrlen); 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); } return all; err: Py_XDECREF(single); Py_XDECREF(all); if (res0) freeaddrinfo(res0); return (PyObject *)NULL; } static char getaddrinfo_doc[] = "socket.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 * PySocket_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 (!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 = PF_UNSPEC; hints.ai_socktype = SOCK_DGRAM; /* make numeric port happy */ error = getaddrinfo(hostp, pbuf, &hints, &res); if (error) { PyGAI_Err(error); goto fail; } if (res->ai_next) { PyErr_SetString(PySocket_Error, "sockaddr resolved to multiple addresses"); goto fail; } switch (res->ai_family) { case AF_INET: { char *t1; int t2; if (PyArg_ParseTuple(sa, "si", &t1, &t2) == 0) { PyErr_SetString(PySocket_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, res->ai_addrlen, hbuf, sizeof(hbuf), pbuf, sizeof(pbuf), flags); if (error) { PyGAI_Err(error); goto fail; } ret = Py_BuildValue("ss", hbuf, pbuf); fail: if (res) freeaddrinfo(res); return ret; } static char getnameinfo_doc[] = "socket.getnameinfo(sockaddr, flags) --> (host, port)\n\ \n\ Get host and port for a sockaddr."; /* List of functions exported by this module. */ static PyMethodDef PySocket_methods[] = { {"gethostbyname", PySocket_gethostbyname, METH_VARARGS, gethostbyname_doc}, {"gethostbyname_ex", PySocket_gethostbyname_ex, METH_VARARGS, ghbn_ex_doc}, {"gethostbyaddr", PySocket_gethostbyaddr, METH_VARARGS, gethostbyaddr_doc}, {"gethostname", PySocket_gethostname, METH_VARARGS, gethostname_doc}, {"getservbyname", PySocket_getservbyname, METH_VARARGS, getservbyname_doc}, {"getprotobyname", PySocket_getprotobyname, METH_VARARGS,getprotobyname_doc}, #ifndef NO_DUP {"fromfd", PySocket_fromfd, METH_VARARGS, fromfd_doc}, #endif {"ntohs", PySocket_ntohs, METH_VARARGS, ntohs_doc}, {"ntohl", PySocket_ntohl, METH_VARARGS, ntohl_doc}, {"htons", PySocket_htons, METH_VARARGS, htons_doc}, {"htonl", PySocket_htonl, METH_VARARGS, htonl_doc}, {"inet_aton", PySocket_inet_aton, METH_VARARGS, inet_aton_doc}, {"inet_ntoa", PySocket_inet_ntoa, METH_VARARGS, inet_ntoa_doc}, {"getaddrinfo", PySocket_getaddrinfo, METH_VARARGS, getaddrinfo_doc}, {"getnameinfo", PySocket_getnameinfo, METH_VARARGS, getnameinfo_doc}, {NULL, NULL} /* Sentinel */ }; /* Convenience routine to export an integer value. * * Errors are silently ignored, for better or for worse... */ static void insint(PyObject *d, char *name, int value) { PyObject *v = PyInt_FromLong((long) value); if (!v || PyDict_SetItemString(d, name, v)) PyErr_Clear(); Py_XDECREF(v); } #ifdef MS_WINDOWS /* Additional initialization and cleanup for NT/Windows */ static void NTcleanup(void) { WSACleanup(); } static int NTinit(void) { WSADATA WSAData; int ret; char buf[100]; ret = WSAStartup(0x0101, &WSAData); switch (ret) { case 0: /* no error */ atexit(NTcleanup); return 1; 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: PyOS_snprintf(buf, sizeof(buf), "WSAStartup failed: error code %d", ret); PyErr_SetString(PyExc_ImportError, buf); break; } return 0; } #endif /* MS_WINDOWS */ #if defined(PYOS_OS2) /* Additional initialization and cleanup for OS/2 */ static void OS2cleanup(void) { /* No cleanup is necessary for OS/2 Sockets */ } static int OS2init(void) { char reason[64]; int rc = sock_init(); if (rc == 0) { atexit(OS2cleanup); return 1; /* Indicate Success */ } PyOS_snprintf(reason, sizeof(reason), "OS/2 TCP/IP Error# %d", sock_errno()); PyErr_SetString(PyExc_ImportError, reason); return 0; /* Indicate Failure */ } #endif /* PYOS_OS2 */ /* C API table - always add new things to the end for binary compatibility. */ static PySocketModule_APIObject PySocketModuleAPI = { &PySocketSock_Type, }; /* Initialize this module. * This is called when the first 'import socket' is done, * via a table in config.c, if config.c is compiled with USE_SOCKET * defined. * * For MS_WINDOWS (which means any Windows variant), this module * is actually called "_socket", and there's a wrapper "socket.py" * which implements some missing functionality (such as makefile(), * dup() and fromfd()). The import of "_socket" may fail with an * ImportError exception if initialization of WINSOCK fails. When * WINSOCK is initialized succesfully, a call to WSACleanup() is * scheduled to be made at exit time. * * For OS/2, this module is also called "_socket" and uses a wrapper * "socket.py" which implements that functionality that is missing * when PC operating systems don't put socket descriptors in the * operating system's filesystem layer. */ static char module_doc[] = "Implementation module for socket operations. See the socket module\n\ for documentation."; DL_EXPORT(void) init_socket(void) { PyObject *m, *d; #ifdef RISCOS _kernel_swi_regs r; r.r[0]=0; _kernel_swi(0x43380, &r, &r); taskwindow = r.r[0]; #else #ifdef MS_WINDOWS if (!NTinit()) return; #else #if defined(__TOS_OS2__) if (!OS2init()) return; #endif /* __TOS_OS2__ */ #endif /* MS_WINDOWS */ #endif /* RISCOS */ PySocketSock_Type.ob_type = &PyType_Type; PySocketSock_Type.tp_getattro = PyObject_GenericGetAttr; PySocketSock_Type.tp_alloc = PyType_GenericAlloc; PySocketSock_Type.tp_free = _PyObject_Del; m = Py_InitModule3(PySocket_MODULE_NAME, PySocket_methods, module_doc); d = PyModule_GetDict(m); PySocket_Error = PyErr_NewException("socket.error", NULL, NULL); if (PySocket_Error == NULL) return; PyDict_SetItemString(d, "error", PySocket_Error); PyH_Error = PyErr_NewException("socket.herror", PySocket_Error, NULL); if (PyH_Error == NULL) return; PyDict_SetItemString(d, "herror", PyH_Error); PyGAI_Error = PyErr_NewException("socket.gaierror", PySocket_Error, NULL); if (PyGAI_Error == NULL) return; PyDict_SetItemString(d, "gaierror", PyGAI_Error); if (PyDict_SetItemString(d, "SocketType", (PyObject *)&PySocketSock_Type) != 0) return; if (PyDict_SetItemString(d, "socket", (PyObject *)&PySocketSock_Type) != 0) return; /* Export C API */ if (PyDict_SetItemString(d, PySocket_CAPI_NAME, PyCObject_FromVoidPtr((void *)&PySocketModuleAPI, NULL) ) != 0) return; /* Address families (we only support AF_INET and AF_UNIX) */ #ifdef AF_UNSPEC insint(d, "AF_UNSPEC", AF_UNSPEC); #endif insint(d, "AF_INET", AF_INET); #ifdef AF_INET6 insint(d, "AF_INET6", AF_INET6); #endif /* AF_INET6 */ #ifdef AF_UNIX insint(d, "AF_UNIX", AF_UNIX); #endif /* AF_UNIX */ #ifdef AF_AX25 insint(d, "AF_AX25", AF_AX25); /* Amateur Radio AX.25 */ #endif #ifdef AF_IPX insint(d, "AF_IPX", AF_IPX); /* Novell IPX */ #endif #ifdef AF_APPLETALK insint(d, "AF_APPLETALK", AF_APPLETALK); /* Appletalk DDP */ #endif #ifdef AF_NETROM insint(d, "AF_NETROM", AF_NETROM); /* Amateur radio NetROM */ #endif #ifdef AF_BRIDGE insint(d, "AF_BRIDGE", AF_BRIDGE); /* Multiprotocol bridge */ #endif #ifdef AF_AAL5 insint(d, "AF_AAL5", AF_AAL5); /* Reserved for Werner's ATM */ #endif #ifdef AF_X25 insint(d, "AF_X25", AF_X25); /* Reserved for X.25 project */ #endif #ifdef AF_INET6 insint(d, "AF_INET6", AF_INET6); /* IP version 6 */ #endif #ifdef AF_ROSE insint(d, "AF_ROSE", AF_ROSE); /* Amateur Radio X.25 PLP */ #endif #ifdef HAVE_NETPACKET_PACKET_H insint(d, "AF_PACKET", AF_PACKET); insint(d, "PF_PACKET", PF_PACKET); insint(d, "PACKET_HOST", PACKET_HOST); insint(d, "PACKET_BROADCAST", PACKET_BROADCAST); insint(d, "PACKET_MULTICAST", PACKET_MULTICAST); insint(d, "PACKET_OTHERHOST", PACKET_OTHERHOST); insint(d, "PACKET_OUTGOING", PACKET_OUTGOING); insint(d, "PACKET_LOOPBACK", PACKET_LOOPBACK); insint(d, "PACKET_FASTROUTE", PACKET_FASTROUTE); #endif /* Socket types */ insint(d, "SOCK_STREAM", SOCK_STREAM); insint(d, "SOCK_DGRAM", SOCK_DGRAM); #ifndef __BEOS__ /* We have incomplete socket support. */ insint(d, "SOCK_RAW", SOCK_RAW); insint(d, "SOCK_SEQPACKET", SOCK_SEQPACKET); insint(d, "SOCK_RDM", SOCK_RDM); #endif #ifdef SO_DEBUG insint(d, "SO_DEBUG", SO_DEBUG); #endif #ifdef SO_ACCEPTCONN insint(d, "SO_ACCEPTCONN", SO_ACCEPTCONN); #endif #ifdef SO_REUSEADDR insint(d, "SO_REUSEADDR", SO_REUSEADDR); #endif #ifdef SO_KEEPALIVE insint(d, "SO_KEEPALIVE", SO_KEEPALIVE); #endif #ifdef SO_DONTROUTE insint(d, "SO_DONTROUTE", SO_DONTROUTE); #endif #ifdef SO_BROADCAST insint(d, "SO_BROADCAST", SO_BROADCAST); #endif #ifdef SO_USELOOPBACK insint(d, "SO_USELOOPBACK", SO_USELOOPBACK); #endif #ifdef SO_LINGER insint(d, "SO_LINGER", SO_LINGER); #endif #ifdef SO_OOBINLINE insint(d, "SO_OOBINLINE", SO_OOBINLINE); #endif #ifdef SO_REUSEPORT insint(d, "SO_REUSEPORT", SO_REUSEPORT); #endif #ifdef SO_SNDBUF insint(d, "SO_SNDBUF", SO_SNDBUF); #endif #ifdef SO_RCVBUF insint(d, "SO_RCVBUF", SO_RCVBUF); #endif #ifdef SO_SNDLOWAT insint(d, "SO_SNDLOWAT", SO_SNDLOWAT); #endif #ifdef SO_RCVLOWAT insint(d, "SO_RCVLOWAT", SO_RCVLOWAT); #endif #ifdef SO_SNDTIMEO insint(d, "SO_SNDTIMEO", SO_SNDTIMEO); #endif #ifdef SO_RCVTIMEO insint(d, "SO_RCVTIMEO", SO_RCVTIMEO); #endif #ifdef SO_ERROR insint(d, "SO_ERROR", SO_ERROR); #endif #ifdef SO_TYPE insint(d, "SO_TYPE", SO_TYPE); #endif /* Maximum number of connections for "listen" */ #ifdef SOMAXCONN insint(d, "SOMAXCONN", SOMAXCONN); #else insint(d, "SOMAXCONN", 5); /* Common value */ #endif /* Flags for send, recv */ #ifdef MSG_OOB insint(d, "MSG_OOB", MSG_OOB); #endif #ifdef MSG_PEEK insint(d, "MSG_PEEK", MSG_PEEK); #endif #ifdef MSG_DONTROUTE insint(d, "MSG_DONTROUTE", MSG_DONTROUTE); #endif #ifdef MSG_DONTWAIT insint(d, "MSG_DONTWAIT", MSG_DONTWAIT); #endif #ifdef MSG_EOR insint(d, "MSG_EOR", MSG_EOR); #endif #ifdef MSG_TRUNC insint(d, "MSG_TRUNC", MSG_TRUNC); #endif #ifdef MSG_CTRUNC insint(d, "MSG_CTRUNC", MSG_CTRUNC); #endif #ifdef MSG_WAITALL insint(d, "MSG_WAITALL", MSG_WAITALL); #endif #ifdef MSG_BTAG insint(d, "MSG_BTAG", MSG_BTAG); #endif #ifdef MSG_ETAG insint(d, "MSG_ETAG", MSG_ETAG); #endif /* Protocol level and numbers, usable for [gs]etsockopt */ #ifdef SOL_SOCKET insint(d, "SOL_SOCKET", SOL_SOCKET); #endif #ifdef SOL_IP insint(d, "SOL_IP", SOL_IP); #else insint(d, "SOL_IP", 0); #endif #ifdef SOL_IPX insint(d, "SOL_IPX", SOL_IPX); #endif #ifdef SOL_AX25 insint(d, "SOL_AX25", SOL_AX25); #endif #ifdef SOL_ATALK insint(d, "SOL_ATALK", SOL_ATALK); #endif #ifdef SOL_NETROM insint(d, "SOL_NETROM", SOL_NETROM); #endif #ifdef SOL_ROSE insint(d, "SOL_ROSE", SOL_ROSE); #endif #ifdef SOL_TCP insint(d, "SOL_TCP", SOL_TCP); #else insint(d, "SOL_TCP", 6); #endif #ifdef SOL_UDP insint(d, "SOL_UDP", SOL_UDP); #else insint(d, "SOL_UDP", 17); #endif #ifdef IPPROTO_IP insint(d, "IPPROTO_IP", IPPROTO_IP); #else insint(d, "IPPROTO_IP", 0); #endif #ifdef IPPROTO_HOPOPTS insint(d, "IPPROTO_HOPOPTS", IPPROTO_HOPOPTS); #endif #ifdef IPPROTO_ICMP insint(d, "IPPROTO_ICMP", IPPROTO_ICMP); #else insint(d, "IPPROTO_ICMP", 1); #endif #ifdef IPPROTO_IGMP insint(d, "IPPROTO_IGMP", IPPROTO_IGMP); #endif #ifdef IPPROTO_GGP insint(d, "IPPROTO_GGP", IPPROTO_GGP); #endif #ifdef IPPROTO_IPV4 insint(d, "IPPROTO_IPV4", IPPROTO_IPV4); #endif #ifdef IPPROTO_IPIP insint(d, "IPPROTO_IPIP", IPPROTO_IPIP); #endif #ifdef IPPROTO_TCP insint(d, "IPPROTO_TCP", IPPROTO_TCP); #else insint(d, "IPPROTO_TCP", 6); #endif #ifdef IPPROTO_EGP insint(d, "IPPROTO_EGP", IPPROTO_EGP); #endif #ifdef IPPROTO_PUP insint(d, "IPPROTO_PUP", IPPROTO_PUP); #endif #ifdef IPPROTO_UDP insint(d, "IPPROTO_UDP", IPPROTO_UDP); #else insint(d, "IPPROTO_UDP", 17); #endif #ifdef IPPROTO_IDP insint(d, "IPPROTO_IDP", IPPROTO_IDP); #endif #ifdef IPPROTO_HELLO insint(d, "IPPROTO_HELLO", IPPROTO_HELLO); #endif #ifdef IPPROTO_ND insint(d, "IPPROTO_ND", IPPROTO_ND); #endif #ifdef IPPROTO_TP insint(d, "IPPROTO_TP", IPPROTO_TP); #endif #ifdef IPPROTO_IPV6 insint(d, "IPPROTO_IPV6", IPPROTO_IPV6); #endif #ifdef IPPROTO_ROUTING insint(d, "IPPROTO_ROUTING", IPPROTO_ROUTING); #endif #ifdef IPPROTO_FRAGMENT insint(d, "IPPROTO_FRAGMENT", IPPROTO_FRAGMENT); #endif #ifdef IPPROTO_RSVP insint(d, "IPPROTO_RSVP", IPPROTO_RSVP); #endif #ifdef IPPROTO_GRE insint(d, "IPPROTO_GRE", IPPROTO_GRE); #endif #ifdef IPPROTO_ESP insint(d, "IPPROTO_ESP", IPPROTO_ESP); #endif #ifdef IPPROTO_AH insint(d, "IPPROTO_AH", IPPROTO_AH); #endif #ifdef IPPROTO_MOBILE insint(d, "IPPROTO_MOBILE", IPPROTO_MOBILE); #endif #ifdef IPPROTO_ICMPV6 insint(d, "IPPROTO_ICMPV6", IPPROTO_ICMPV6); #endif #ifdef IPPROTO_NONE insint(d, "IPPROTO_NONE", IPPROTO_NONE); #endif #ifdef IPPROTO_DSTOPTS insint(d, "IPPROTO_DSTOPTS", IPPROTO_DSTOPTS); #endif #ifdef IPPROTO_XTP insint(d, "IPPROTO_XTP", IPPROTO_XTP); #endif #ifdef IPPROTO_EON insint(d, "IPPROTO_EON", IPPROTO_EON); #endif #ifdef IPPROTO_PIM insint(d, "IPPROTO_PIM", IPPROTO_PIM); #endif #ifdef IPPROTO_IPCOMP insint(d, "IPPROTO_IPCOMP", IPPROTO_IPCOMP); #endif #ifdef IPPROTO_VRRP insint(d, "IPPROTO_VRRP", IPPROTO_VRRP); #endif #ifdef IPPROTO_BIP insint(d, "IPPROTO_BIP", IPPROTO_BIP); #endif /**/ #ifdef IPPROTO_RAW insint(d, "IPPROTO_RAW", IPPROTO_RAW); #else insint(d, "IPPROTO_RAW", 255); #endif #ifdef IPPROTO_MAX insint(d, "IPPROTO_MAX", IPPROTO_MAX); #endif /* Some port configuration */ #ifdef IPPORT_RESERVED insint(d, "IPPORT_RESERVED", IPPORT_RESERVED); #else insint(d, "IPPORT_RESERVED", 1024); #endif #ifdef IPPORT_USERRESERVED insint(d, "IPPORT_USERRESERVED", IPPORT_USERRESERVED); #else insint(d, "IPPORT_USERRESERVED", 5000); #endif /* Some reserved IP v.4 addresses */ #ifdef INADDR_ANY insint(d, "INADDR_ANY", INADDR_ANY); #else insint(d, "INADDR_ANY", 0x00000000); #endif #ifdef INADDR_BROADCAST insint(d, "INADDR_BROADCAST", INADDR_BROADCAST); #else insint(d, "INADDR_BROADCAST", 0xffffffff); #endif #ifdef INADDR_LOOPBACK insint(d, "INADDR_LOOPBACK", INADDR_LOOPBACK); #else insint(d, "INADDR_LOOPBACK", 0x7F000001); #endif #ifdef INADDR_UNSPEC_GROUP insint(d, "INADDR_UNSPEC_GROUP", INADDR_UNSPEC_GROUP); #else insint(d, "INADDR_UNSPEC_GROUP", 0xe0000000); #endif #ifdef INADDR_ALLHOSTS_GROUP insint(d, "INADDR_ALLHOSTS_GROUP", INADDR_ALLHOSTS_GROUP); #else insint(d, "INADDR_ALLHOSTS_GROUP", 0xe0000001); #endif #ifdef INADDR_MAX_LOCAL_GROUP insint(d, "INADDR_MAX_LOCAL_GROUP", INADDR_MAX_LOCAL_GROUP); #else insint(d, "INADDR_MAX_LOCAL_GROUP", 0xe00000ff); #endif #ifdef INADDR_NONE insint(d, "INADDR_NONE", INADDR_NONE); #else insint(d, "INADDR_NONE", 0xffffffff); #endif /* IPv4 [gs]etsockopt options */ #ifdef IP_OPTIONS insint(d, "IP_OPTIONS", IP_OPTIONS); #endif #ifdef IP_HDRINCL insint(d, "IP_HDRINCL", IP_HDRINCL); #endif #ifdef IP_TOS insint(d, "IP_TOS", IP_TOS); #endif #ifdef IP_TTL insint(d, "IP_TTL", IP_TTL); #endif #ifdef IP_RECVOPTS insint(d, "IP_RECVOPTS", IP_RECVOPTS); #endif #ifdef IP_RECVRETOPTS insint(d, "IP_RECVRETOPTS", IP_RECVRETOPTS); #endif #ifdef IP_RECVDSTADDR insint(d, "IP_RECVDSTADDR", IP_RECVDSTADDR); #endif #ifdef IP_RETOPTS insint(d, "IP_RETOPTS", IP_RETOPTS); #endif #ifdef IP_MULTICAST_IF insint(d, "IP_MULTICAST_IF", IP_MULTICAST_IF); #endif #ifdef IP_MULTICAST_TTL insint(d, "IP_MULTICAST_TTL", IP_MULTICAST_TTL); #endif #ifdef IP_MULTICAST_LOOP insint(d, "IP_MULTICAST_LOOP", IP_MULTICAST_LOOP); #endif #ifdef IP_ADD_MEMBERSHIP insint(d, "IP_ADD_MEMBERSHIP", IP_ADD_MEMBERSHIP); #endif #ifdef IP_DROP_MEMBERSHIP insint(d, "IP_DROP_MEMBERSHIP", IP_DROP_MEMBERSHIP); #endif #ifdef IP_DEFAULT_MULTICAST_TTL insint(d, "IP_DEFAULT_MULTICAST_TTL", IP_DEFAULT_MULTICAST_TTL); #endif #ifdef IP_DEFAULT_MULTICAST_LOOP insint(d, "IP_DEFAULT_MULTICAST_LOOP", IP_DEFAULT_MULTICAST_LOOP); #endif #ifdef IP_MAX_MEMBERSHIPS insint(d, "IP_MAX_MEMBERSHIPS", IP_MAX_MEMBERSHIPS); #endif /* IPv6 [gs]etsockopt options, defined in RFC2553 */ #ifdef IPV6_JOIN_GROUP insint(d, "IPV6_JOIN_GROUP", IPV6_JOIN_GROUP); #endif #ifdef IPV6_LEAVE_GROUP insint(d, "IPV6_LEAVE_GROUP", IPV6_LEAVE_GROUP); #endif #ifdef IPV6_MULTICAST_HOPS insint(d, "IPV6_MULTICAST_HOPS", IPV6_MULTICAST_HOPS); #endif #ifdef IPV6_MULTICAST_IF insint(d, "IPV6_MULTICAST_IF", IPV6_MULTICAST_IF); #endif #ifdef IPV6_MULTICAST_LOOP insint(d, "IPV6_MULTICAST_LOOP", IPV6_MULTICAST_LOOP); #endif #ifdef IPV6_UNICAST_HOPS insint(d, "IPV6_UNICAST_HOPS", IPV6_UNICAST_HOPS); #endif /* TCP options */ #ifdef TCP_NODELAY insint(d, "TCP_NODELAY", TCP_NODELAY); #endif #ifdef TCP_MAXSEG insint(d, "TCP_MAXSEG", TCP_MAXSEG); #endif #ifdef TCP_CORK insint(d, "TCP_CORK", TCP_CORK); #endif #ifdef TCP_KEEPIDLE insint(d, "TCP_KEEPIDLE", TCP_KEEPIDLE); #endif #ifdef TCP_KEEPINTVL insint(d, "TCP_KEEPINTVL", TCP_KEEPINTVL); #endif #ifdef TCP_KEEPCNT insint(d, "TCP_KEEPCNT", TCP_KEEPCNT); #endif #ifdef TCP_SYNCNT insint(d, "TCP_SYNCNT", TCP_SYNCNT); #endif #ifdef TCP_LINGER2 insint(d, "TCP_LINGER2", TCP_LINGER2); #endif #ifdef TCP_DEFER_ACCEPT insint(d, "TCP_DEFER_ACCEPT", TCP_DEFER_ACCEPT); #endif #ifdef TCP_WINDOW_CLAMP insint(d, "TCP_WINDOW_CLAMP", TCP_WINDOW_CLAMP); #endif #ifdef TCP_INFO insint(d, "TCP_INFO", TCP_INFO); #endif #ifdef TCP_QUICKACK insint(d, "TCP_QUICKACK", TCP_QUICKACK); #endif /* IPX options */ #ifdef IPX_TYPE insint(d, "IPX_TYPE", IPX_TYPE); #endif /* get{addr,name}info parameters */ #ifdef EAI_ADDRFAMILY insint(d, "EAI_ADDRFAMILY", EAI_ADDRFAMILY); #endif #ifdef EAI_AGAIN insint(d, "EAI_AGAIN", EAI_AGAIN); #endif #ifdef EAI_BADFLAGS insint(d, "EAI_BADFLAGS", EAI_BADFLAGS); #endif #ifdef EAI_FAIL insint(d, "EAI_FAIL", EAI_FAIL); #endif #ifdef EAI_FAMILY insint(d, "EAI_FAMILY", EAI_FAMILY); #endif #ifdef EAI_MEMORY insint(d, "EAI_MEMORY", EAI_MEMORY); #endif #ifdef EAI_NODATA insint(d, "EAI_NODATA", EAI_NODATA); #endif #ifdef EAI_NONAME insint(d, "EAI_NONAME", EAI_NONAME); #endif #ifdef EAI_SERVICE insint(d, "EAI_SERVICE", EAI_SERVICE); #endif #ifdef EAI_SOCKTYPE insint(d, "EAI_SOCKTYPE", EAI_SOCKTYPE); #endif #ifdef EAI_SYSTEM insint(d, "EAI_SYSTEM", EAI_SYSTEM); #endif #ifdef EAI_BADHINTS insint(d, "EAI_BADHINTS", EAI_BADHINTS); #endif #ifdef EAI_PROTOCOL insint(d, "EAI_PROTOCOL", EAI_PROTOCOL); #endif #ifdef EAI_MAX insint(d, "EAI_MAX", EAI_MAX); #endif #ifdef AI_PASSIVE insint(d, "AI_PASSIVE", AI_PASSIVE); #endif #ifdef AI_CANONNAME insint(d, "AI_CANONNAME", AI_CANONNAME); #endif #ifdef AI_NUMERICHOST insint(d, "AI_NUMERICHOST", AI_NUMERICHOST); #endif #ifdef AI_MASK insint(d, "AI_MASK", AI_MASK); #endif #ifdef AI_ALL insint(d, "AI_ALL", AI_ALL); #endif #ifdef AI_V4MAPPED_CFG insint(d, "AI_V4MAPPED_CFG", AI_V4MAPPED_CFG); #endif #ifdef AI_ADDRCONFIG insint(d, "AI_ADDRCONFIG", AI_ADDRCONFIG); #endif #ifdef AI_V4MAPPED insint(d, "AI_V4MAPPED", AI_V4MAPPED); #endif #ifdef AI_DEFAULT insint(d, "AI_DEFAULT", AI_DEFAULT); #endif #ifdef NI_MAXHOST insint(d, "NI_MAXHOST", NI_MAXHOST); #endif #ifdef NI_MAXSERV insint(d, "NI_MAXSERV", NI_MAXSERV); #endif #ifdef NI_NOFQDN insint(d, "NI_NOFQDN", NI_NOFQDN); #endif #ifdef NI_NUMERICHOST insint(d, "NI_NUMERICHOST", NI_NUMERICHOST); #endif #ifdef NI_NAMEREQD insint(d, "NI_NAMEREQD", NI_NAMEREQD); #endif #ifdef NI_NUMERICSERV insint(d, "NI_NUMERICSERV", NI_NUMERICSERV); #endif #ifdef NI_DGRAM insint(d, "NI_DGRAM", NI_DGRAM); #endif /* Initialize gethostbyname lock */ #ifdef USE_GETHOSTBYNAME_LOCK gethostbyname_lock = PyThread_allocate_lock(); #endif } /* Simplistic emulation code for inet_pton that only works for IPv4 */ #ifndef HAVE_INET_PTON int inet_pton (int af, const char *src, void *dst) { if(af == AF_INET){ long packed_addr; #ifdef USE_GUSI1 packed_addr = (long)inet_addr(src).s_addr; #else packed_addr = inet_addr(src); #endif if (packed_addr == INADDR_NONE) return 0; memcpy(dst, &packed_addr, 4); return 1; } /* Should set errno to EAFNOSUPPORT */ return -1; } const char * inet_ntop(int af, const void *src, char *dst, socklen_t size) { if (af == AF_INET) { struct in_addr packed_addr; if (size < 16) /* Should set errno to ENOSPC. */ return NULL; memcpy(&packed_addr, src, sizeof(packed_addr)); return strncpy(dst, inet_ntoa(packed_addr), size); } /* Should set errno to EAFNOSUPPORT */ return NULL; } #endif