/* net.cc: network-related routines. Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. This file is part of Cygwin. This software is a copyrighted work licensed under the terms of the Cygwin license. Please consult the file "CYGWIN_LICENSE" for details. */ /* #define DEBUG_NEST_ON 1 */ #define __INSIDE_CYGWIN_NET__ #include "winsup.h" #include #include #include #include #include #include #include #define USE_SYS_TYPES_FD_SET #include #include "cygerrno.h" #include "security.h" #include "fhandler.h" #include "path.h" #include "dtable.h" #include "cygheap.h" #include "sigproc.h" #include "pinfo.h" #include "registry.h" #include "wsock_event.h" extern "C" { int h_errno; int __stdcall rcmd (char **ahost, unsigned short inport, char *locuser, char *remuser, char *cmd, SOCKET *fd2p); int __stdcall rexec (char **ahost, unsigned short inport, char *locuser, char *password, char *cmd, SOCKET *fd2p); int __stdcall rresvport (int *); int sscanf (const char *, const char *, ...); } /* End of "C" section */ LPWSAOVERLAPPED wsock_event::prepare () { LPWSAOVERLAPPED ret = NULL; SetLastError (0); if ((event = WSACreateEvent ()) != WSA_INVALID_EVENT) { memset (&ovr, 0, sizeof ovr); ovr.hEvent = event; ret = &ovr; } else if (GetLastError () == ERROR_PROC_NOT_FOUND) /* winsock2 not available */ WSASetLastError (0); debug_printf ("%d = wsock_event::prepare ()", ret); return ret; } int wsock_event::wait (int socket, LPDWORD flags) { int ret = -1; WSAEVENT ev[2] = { event, signal_arrived }; switch (WSAWaitForMultipleEvents(2, ev, FALSE, WSA_INFINITE, FALSE)) { case WSA_WAIT_EVENT_0: DWORD len; if (WSAGetOverlappedResult(socket, &ovr, &len, FALSE, flags)) ret = (int) len; break; case WSA_WAIT_EVENT_0 + 1: if (!CancelIo ((HANDLE)socket)) { debug_printf ("CancelIo() %E, fallback to blocking io"); WSAGetOverlappedResult(socket, &ovr, &len, TRUE, flags); } else WSASetLastError (WSAEINTR); break; case WSA_WAIT_FAILED: break; default: /* Should be impossible. *LOL* */ WSASetLastError (WSAEFAULT); break; } WSACloseEvent (event); event = NULL; return ret; } WSADATA wsadata; /* Cygwin internal */ static fhandler_socket * get (int fd) { cygheap_fdget cfd (fd); if (cfd < 0) return 0; return cfd->is_socket (); } /* Cygwin internal */ static SOCKET __stdcall set_socket_inheritance (SOCKET sock) { SOCKET osock = sock; if (!DuplicateHandle (hMainProc, (HANDLE) sock, hMainProc, (HANDLE *) &sock, 0, TRUE, DUPLICATE_SAME_ACCESS | DUPLICATE_CLOSE_SOURCE)) system_printf ("DuplicateHandle failed %E"); else debug_printf ("DuplicateHandle succeeded osock %p, sock %p", osock, sock); return sock; } /* htonl: standards? */ extern "C" unsigned long int htonl (unsigned long int x) { return ((((x & 0x000000ffU) << 24) | ((x & 0x0000ff00U) << 8) | ((x & 0x00ff0000U) >> 8) | ((x & 0xff000000U) >> 24))); } /* ntohl: standards? */ extern "C" unsigned long int ntohl (unsigned long int x) { return htonl (x); } /* htons: standards? */ extern "C" unsigned short htons (unsigned short x) { return ((((x & 0x000000ffU) << 8) | ((x & 0x0000ff00U) >> 8))); } /* ntohs: standards? */ extern "C" unsigned short ntohs (unsigned short x) { return htons (x); } /* Cygwin internal */ static void dump_protoent (struct protoent *p) { if (p) debug_printf ("protoent %s %x %x", p->p_name, p->p_aliases, p->p_proto); } /* exported as inet_ntoa: BSD 4.3 */ extern "C" char * cygwin_inet_ntoa (struct in_addr in) { #ifdef _MT_SAFE #define ntoa_buf _reent_winsup ()->_ntoa_buf #else static char *ntoa_buf = NULL; #endif char *res = inet_ntoa (in); if (ntoa_buf) { free (ntoa_buf); ntoa_buf = NULL; } if (res) ntoa_buf = strdup (res); return ntoa_buf; } /* exported as inet_addr: BSD 4.3 */ extern "C" unsigned long cygwin_inet_addr (const char *cp) { if (check_null_str_errno (cp)) return INADDR_NONE; unsigned long res = inet_addr (cp); return res; } /* exported as inet_aton: BSD 4.3 inet_aton is not exported by wsock32 and ws2_32, so it has to be implemented here. */ extern "C" int cygwin_inet_aton (const char *cp, struct in_addr *inp) { if (check_null_str_errno (cp) || check_null_invalid_struct_errno (inp)) return 0; unsigned long res = inet_addr (cp); if (res == INADDR_NONE && strcmp (cp, "255.255.255.255")) return 0; if (inp) inp->s_addr = res; return 1; } /* undocumented in wsock32.dll */ extern "C" unsigned int WINAPI inet_network (const char *); extern "C" unsigned int cygwin_inet_network (const char *cp) { if (check_null_str_errno (cp)) return INADDR_NONE; unsigned int res = inet_network (cp); return res; } /* inet_netof is in the standard BSD sockets library. It is useless for modern networks, since it assumes network values which are no longer meaningful, but some existing code calls it. */ extern "C" unsigned long inet_netof (struct in_addr in) { unsigned long i, res; i = ntohl (in.s_addr); if (IN_CLASSA (i)) res = (i & IN_CLASSA_NET) >> IN_CLASSA_NSHIFT; else if (IN_CLASSB (i)) res = (i & IN_CLASSB_NET) >> IN_CLASSB_NSHIFT; else res = (i & IN_CLASSC_NET) >> IN_CLASSC_NSHIFT; return res; } /* inet_makeaddr is in the standard BSD sockets library. It is useless for modern networks, since it assumes network values which are no longer meaningful, but some existing code calls it. */ extern "C" struct in_addr inet_makeaddr (int net, int lna) { unsigned long i; struct in_addr in; if (net < IN_CLASSA_MAX) i = (net << IN_CLASSA_NSHIFT) | (lna & IN_CLASSA_HOST); else if (net < IN_CLASSB_MAX) i = (net << IN_CLASSB_NSHIFT) | (lna & IN_CLASSB_HOST); else if (net < 0x1000000) i = (net << IN_CLASSC_NSHIFT) | (lna & IN_CLASSC_HOST); else i = net | lna; in.s_addr = htonl (i); return in; } struct tl { int w; const char *s; int e; }; static NO_COPY struct tl errmap[] = { {WSAEINTR, "WSAEINTR", EINTR}, {WSAEWOULDBLOCK, "WSAEWOULDBLOCK", EWOULDBLOCK}, {WSAEINPROGRESS, "WSAEINPROGRESS", EINPROGRESS}, {WSAEALREADY, "WSAEALREADY", EALREADY}, {WSAENOTSOCK, "WSAENOTSOCK", ENOTSOCK}, {WSAEDESTADDRREQ, "WSAEDESTADDRREQ", EDESTADDRREQ}, {WSAEMSGSIZE, "WSAEMSGSIZE", EMSGSIZE}, {WSAEPROTOTYPE, "WSAEPROTOTYPE", EPROTOTYPE}, {WSAENOPROTOOPT, "WSAENOPROTOOPT", ENOPROTOOPT}, {WSAEPROTONOSUPPORT, "WSAEPROTONOSUPPORT", EPROTONOSUPPORT}, {WSAESOCKTNOSUPPORT, "WSAESOCKTNOSUPPORT", ESOCKTNOSUPPORT}, {WSAEOPNOTSUPP, "WSAEOPNOTSUPP", EOPNOTSUPP}, {WSAEPFNOSUPPORT, "WSAEPFNOSUPPORT", EPFNOSUPPORT}, {WSAEAFNOSUPPORT, "WSAEAFNOSUPPORT", EAFNOSUPPORT}, {WSAEADDRINUSE, "WSAEADDRINUSE", EADDRINUSE}, {WSAEADDRNOTAVAIL, "WSAEADDRNOTAVAIL", EADDRNOTAVAIL}, {WSAENETDOWN, "WSAENETDOWN", ENETDOWN}, {WSAENETUNREACH, "WSAENETUNREACH", ENETUNREACH}, {WSAENETRESET, "WSAENETRESET", ENETRESET}, {WSAECONNABORTED, "WSAECONNABORTED", ECONNABORTED}, {WSAECONNRESET, "WSAECONNRESET", ECONNRESET}, {WSAENOBUFS, "WSAENOBUFS", ENOBUFS}, {WSAEISCONN, "WSAEISCONN", EISCONN}, {WSAENOTCONN, "WSAENOTCONN", ENOTCONN}, {WSAESHUTDOWN, "WSAESHUTDOWN", ESHUTDOWN}, {WSAETOOMANYREFS, "WSAETOOMANYREFS", ETOOMANYREFS}, {WSAETIMEDOUT, "WSAETIMEDOUT", ETIMEDOUT}, {WSAECONNREFUSED, "WSAECONNREFUSED", ECONNREFUSED}, {WSAELOOP, "WSAELOOP", ELOOP}, {WSAENAMETOOLONG, "WSAENAMETOOLONG", ENAMETOOLONG}, {WSAEHOSTDOWN, "WSAEHOSTDOWN", EHOSTDOWN}, {WSAEHOSTUNREACH, "WSAEHOSTUNREACH", EHOSTUNREACH}, {WSAENOTEMPTY, "WSAENOTEMPTY", ENOTEMPTY}, {WSAEPROCLIM, "WSAEPROCLIM", EPROCLIM}, {WSAEUSERS, "WSAEUSERS", EUSERS}, {WSAEDQUOT, "WSAEDQUOT", EDQUOT}, {WSAESTALE, "WSAESTALE", ESTALE}, {WSAEREMOTE, "WSAEREMOTE", EREMOTE}, {WSAEINVAL, "WSAEINVAL", EINVAL}, {WSAEFAULT, "WSAEFAULT", EFAULT}, {0, "NOERROR", 0}, {0, NULL, 0} }; static int find_winsock_errno (int why) { for (int i = 0; errmap[i].s != NULL; ++i) if (why == errmap[i].w) return errmap[i].e; return EPERM; } /* Cygwin internal */ void __set_winsock_errno (const char *fn, int ln) { DWORD werr = WSAGetLastError (); int err = find_winsock_errno (werr); set_errno (err); syscall_printf ("%s:%d - winsock error %d -> errno %d", fn, ln, werr, err); } /* * Since the member `s' isn't used for debug output we can use it * for the error text returned by herror and hstrerror. */ static NO_COPY struct tl host_errmap[] = { {WSAHOST_NOT_FOUND, "Unknown host", HOST_NOT_FOUND}, {WSATRY_AGAIN, "Host name lookup failure", TRY_AGAIN}, {WSANO_RECOVERY, "Unknown server error", NO_RECOVERY}, {WSANO_DATA, "No address associated with name", NO_DATA}, {0, NULL, 0} }; /* Cygwin internal */ static void set_host_errno () { int i; int why = WSAGetLastError (); for (i = 0; host_errmap[i].w != 0; ++i) if (why == host_errmap[i].w) break; if (host_errmap[i].w != 0) h_errno = host_errmap[i].e; else h_errno = NETDB_INTERNAL; } static void free_char_list (char **clist) { if (clist) { for (char **cl = clist; *cl; ++cl) free (*cl); free (clist); } } static char ** dup_char_list (char **src) { char **dst; int cnt = 0; for (char **cl = src; *cl; ++cl) ++cnt; if (!(dst = (char **) calloc (cnt + 1, sizeof *dst))) return NULL; while (cnt-- > 0) if (!(dst[cnt] = strdup (src[cnt]))) return NULL; return dst; } #define free_addr_list(addr_list) free_char_list (addr_list) static char ** dup_addr_list (char **src, unsigned int size) { char **dst; int cnt = 0; for (char **cl = src; *cl; ++cl) ++cnt; if (!(dst = (char **) calloc (cnt + 1, sizeof *dst))) return NULL; while (cnt-- > 0) { if (!(dst[cnt] = (char *) malloc(size))) return NULL; memcpy(dst[cnt], src[cnt], size); } return dst; } static void free_protoent_ptr (struct protoent *&p) { if (p) { debug_printf ("protoent: %s", p->p_name); if (p->p_name) free (p->p_name); free_char_list (p->p_aliases); p = NULL; } } static struct protoent * dup_protoent_ptr (struct protoent *src) { if (!src) return NULL; struct protoent *dst = (struct protoent *) calloc (1, sizeof *dst); if (!dst) return NULL; debug_printf ("protoent: %s", src->p_name); dst->p_proto = src->p_proto; if (src->p_name && !(dst->p_name = strdup (src->p_name))) goto out; if (src->p_aliases && !(dst->p_aliases = dup_char_list (src->p_aliases))) goto out; debug_printf ("protoent: copied %s", dst->p_name); return dst; out: free_protoent_ptr (dst); return NULL; } #ifdef _MT_SAFE #define protoent_buf _reent_winsup ()->_protoent_buf #else static struct protoent *protoent_buf = NULL; #endif /* exported as getprotobyname: standards? */ extern "C" struct protoent * cygwin_getprotobyname (const char *p) { if (check_null_str_errno (p)) return NULL; free_protoent_ptr (protoent_buf); protoent_buf = dup_protoent_ptr (getprotobyname (p)); if (!protoent_buf) set_winsock_errno (); dump_protoent (protoent_buf); return protoent_buf; } /* exported as getprotobynumber: standards? */ extern "C" struct protoent * cygwin_getprotobynumber (int number) { free_protoent_ptr (protoent_buf); protoent_buf = dup_protoent_ptr (getprotobynumber (number)); if (!protoent_buf) set_winsock_errno (); dump_protoent (protoent_buf); return protoent_buf; } fhandler_socket * fdsock (int& fd, const char *name, SOCKET soc) { if (!winsock2_active) soc = set_socket_inheritance (soc); else if (wincap.has_set_handle_information ()) { /* NT systems apparently set sockets to inheritable by default */ SetHandleInformation ((HANDLE)soc, HANDLE_FLAG_INHERIT, 0); debug_printf ("reset socket inheritance since winsock2_active %d", winsock2_active); } else debug_printf ("not setting socket inheritance since winsock2_active %d", winsock2_active); fhandler_socket *fh = (fhandler_socket *) cygheap->fdtab.build_fhandler (fd, FH_SOCKET, name); fh->set_io_handle ((HANDLE) soc); fh->set_flags (O_RDWR, O_BINARY); debug_printf ("fd %d, name '%s', soc %p", fd, name, soc); return fh; } /* exported as socket: standards? */ extern "C" int cygwin_socket (int af, int type, int protocol) { int res = -1; SOCKET soc = 0; fhandler_socket* fh = NULL; cygheap_fdnew fd; if (fd >= 0) { debug_printf ("socket (%d, %d, %d)", af, type, protocol); soc = socket (AF_INET, type, af == AF_LOCAL ? 0 : protocol); if (soc == INVALID_SOCKET) { set_winsock_errno (); goto done; } const char *name; if (af == AF_INET) name = (type == SOCK_STREAM ? "/dev/tcp" : "/dev/udp"); else name = (type == SOCK_STREAM ? "/dev/streamsocket" : "/dev/dgsocket"); fh = fdsock (fd, name, soc); if (fh) { fh->set_addr_family (af); fh->set_socket_type (type); } res = fd; } done: syscall_printf ("%d = socket (%d, %d, %d)", res, af, type, protocol); return res; } /* exported as sendto: standards? */ extern "C" int cygwin_sendto (int fd, const void *buf, int len, unsigned int flags, const struct sockaddr *to, int tolen) { int res; fhandler_socket *fh = get (fd); if ((len && __check_invalid_read_ptr_errno (buf, (unsigned) len)) || __check_null_invalid_struct_errno (to, tolen) || !fh) res = -1; else res = fh->sendto (buf, len, flags, to, tolen); syscall_printf ("%d = sendto (%d, %x, %x, %x)", res, fd, buf, len, flags); return res; } /* exported as recvfrom: standards? */ extern "C" int cygwin_recvfrom (int fd, char *buf, int len, int flags, struct sockaddr *from, int *fromlen) { int res; fhandler_socket *fh = get (fd); if (__check_null_invalid_struct_errno (buf, (unsigned) len) || check_null_invalid_struct_errno (fromlen) || (from && __check_null_invalid_struct_errno (from, (unsigned) *fromlen)) || !fh) res = -1; else res = fh->recvfrom (buf, len, flags, from, fromlen); syscall_printf ("%d = recvfrom (%d, %x, %x, %x)", res, fd, buf, len, flags); return res; } /* exported as setsockopt: standards? */ extern "C" int cygwin_setsockopt (int fd, int level, int optname, const void *optval, int optlen) { fhandler_socket *fh = get (fd); int res = -1; const char *name = "error"; if ((!optval || !__check_invalid_read_ptr_errno (optval, optlen)) && fh) { /* For the following debug_printf */ switch (optname) { case SO_DEBUG: name="SO_DEBUG"; break; case SO_ACCEPTCONN: name="SO_ACCEPTCONN"; break; case SO_REUSEADDR: name="SO_REUSEADDR"; break; case SO_KEEPALIVE: name="SO_KEEPALIVE"; break; case SO_DONTROUTE: name="SO_DONTROUTE"; break; case SO_BROADCAST: name="SO_BROADCAST"; break; case SO_USELOOPBACK: name="SO_USELOOPBACK"; break; case SO_LINGER: name="SO_LINGER"; break; case SO_OOBINLINE: name="SO_OOBINLINE"; break; case SO_ERROR: name="SO_ERROR"; break; } res = setsockopt (fh->get_socket (), level, optname, (const char *) optval, optlen); if (optlen == 4) syscall_printf ("setsockopt optval=%x", *(long *) optval); if (res) set_winsock_errno (); } syscall_printf ("%d = setsockopt (%d, %d, %x (%s), %x, %d)", res, fd, level, optname, name, optval, optlen); return res; } /* exported as getsockopt: standards? */ extern "C" int cygwin_getsockopt (int fd, int level, int optname, void *optval, int *optlen) { fhandler_socket *fh = get (fd); int res = -1; const char *name = "error"; if (!check_null_invalid_struct_errno (optlen) && (!optval || !__check_null_invalid_struct_errno (optval, (unsigned) *optlen)) && fh) { /* For the following debug_printf */ switch (optname) { case SO_DEBUG: name="SO_DEBUG"; break; case SO_ACCEPTCONN: name="SO_ACCEPTCONN"; break; case SO_REUSEADDR: name="SO_REUSEADDR"; break; case SO_KEEPALIVE: name="SO_KEEPALIVE"; break; case SO_DONTROUTE: name="SO_DONTROUTE"; break; case SO_BROADCAST: name="SO_BROADCAST"; break; case SO_USELOOPBACK: name="SO_USELOOPBACK"; break; case SO_LINGER: name="SO_LINGER"; break; case SO_OOBINLINE: name="SO_OOBINLINE"; break; case SO_ERROR: name="SO_ERROR"; break; } res = getsockopt (fh->get_socket (), level, optname, (char *) optval, (int *) optlen); if (optname == SO_ERROR) { int *e = (int *) optval; *e = find_winsock_errno (*e); } if (res) set_winsock_errno (); } syscall_printf ("%d = getsockopt (%d, %d, %x (%s), %x, %d)", res, fd, level, optname, name, optval, optlen); return res; } /* exported as connect: standards? */ extern "C" int cygwin_connect (int fd, const struct sockaddr *name, int namelen) { int res; fhandler_socket *fh = get (fd); if (__check_invalid_read_ptr_errno (name, namelen)) return -1; if (!fh) res = -1; else res = fh->connect (name, namelen); syscall_printf ("%d = connect (%d, %x, %x)", res, fd, name, namelen); return res; } static void free_servent_ptr (struct servent *&p) { if (p) { debug_printf ("servent: %s", p->s_name); if (p->s_name) free (p->s_name); if (p->s_proto) free (p->s_proto); free_char_list (p->s_aliases); p = NULL; } } #pragma pack(push,2) struct pservent { char *s_name; char **s_aliases; short s_port; char *s_proto; }; #pragma pack(pop) static struct servent * dup_servent_ptr (struct servent *src) { if (!src) return NULL; struct servent *dst = (struct servent *) calloc (1, sizeof *dst); if (!dst) return NULL; debug_printf ("servent: %s", src->s_name); dst->s_port = src->s_port; if (src->s_name && !(dst->s_name = strdup (src->s_name))) goto out; if (src->s_aliases && !(dst->s_aliases = dup_char_list (src->s_aliases))) goto out; char *s_proto; if (IsBadReadPtr (src->s_proto, sizeof (src->s_proto)) && !IsBadReadPtr (((pservent *) src)->s_proto, sizeof (src->s_proto))) s_proto = ((pservent *)src)->s_proto; else s_proto = src->s_proto; if (s_proto && !(dst->s_proto = strdup (s_proto))) goto out; debug_printf ("servent: copied %s", dst->s_name); return dst; out: free_servent_ptr (dst); return NULL; } #ifdef _MT_SAFE #define servent_buf _reent_winsup ()->_servent_buf #else static struct servent *servent_buf = NULL; #endif /* exported as getservbyname: standards? */ extern "C" struct servent * cygwin_getservbyname (const char *name, const char *proto) { if (check_null_str_errno (name) || (proto != NULL && check_null_str_errno (proto))) return NULL; free_servent_ptr (servent_buf); servent_buf = dup_servent_ptr (getservbyname (name, proto)); if (!servent_buf) set_winsock_errno (); syscall_printf ("%x = getservbyname (%s, %s)", servent_buf, name, proto); return servent_buf; } /* exported as getservbyport: standards? */ extern "C" struct servent * cygwin_getservbyport (int port, const char *proto) { if (proto != NULL && check_null_str_errno (proto)) return NULL; free_servent_ptr (servent_buf); servent_buf = dup_servent_ptr (getservbyport (port, proto)); if (!servent_buf) set_winsock_errno (); syscall_printf ("%x = getservbyport (%d, %s)", servent_buf, port, proto); return servent_buf; } extern "C" int cygwin_gethostname (char *name, size_t len) { int PASCAL win32_gethostname (char*, int); if (__check_null_invalid_struct_errno (name, len)) return -1; if (wsock32_handle == NULL || win32_gethostname (name, len) == SOCKET_ERROR) { DWORD local_len = len; if (!GetComputerNameA (name, &local_len)) { set_winsock_errno (); return -1; } } debug_printf ("name %s\n", name); h_errno = 0; return 0; } static void free_hostent_ptr (struct hostent *&p) { if (p) { debug_printf ("hostent: %s", p->h_name); if (p->h_name) free ((void *)p->h_name); free_char_list (p->h_aliases); free_addr_list (p->h_addr_list); p = NULL; } } static struct hostent * dup_hostent_ptr (struct hostent *src) { if (!src) return NULL; struct hostent *dst = (struct hostent *) calloc (1, sizeof *dst); if (!dst) return NULL; debug_printf ("hostent: %s", src->h_name); dst->h_addrtype = src->h_addrtype; dst->h_length = src->h_length; if (src->h_name && !(dst->h_name = strdup (src->h_name))) goto out; if (src->h_aliases && !(dst->h_aliases = dup_char_list (src->h_aliases))) goto out; if (src->h_addr_list && !(dst->h_addr_list = dup_addr_list(src->h_addr_list, src->h_length))) goto out; debug_printf ("hostent: copied %s", dst->h_name); return dst; out: free_hostent_ptr (dst); return NULL; } #ifdef _MT_SAFE #define hostent_buf _reent_winsup ()->_hostent_buf #else static struct hostent *hostent_buf = NULL; #endif /* exported as gethostbyname: standards? */ extern "C" struct hostent * cygwin_gethostbyname (const char *name) { static unsigned char tmp_addr[4]; static struct hostent tmp; static char *tmp_aliases[1]; static char *tmp_addr_list[2]; static int a, b, c, d; if (check_null_str_errno (name)) return NULL; if (sscanf (name, "%d.%d.%d.%d", &a, &b, &c, &d) == 4) { /* In case you don't have DNS, at least x.x.x.x still works */ memset (&tmp, 0, sizeof (tmp)); tmp_addr[0] = a; tmp_addr[1] = b; tmp_addr[2] = c; tmp_addr[3] = d; tmp_addr_list[0] = (char *) tmp_addr; tmp.h_name = name; tmp.h_aliases = tmp_aliases; tmp.h_addrtype = 2; tmp.h_length = 4; tmp.h_addr_list = tmp_addr_list; return &tmp; } free_hostent_ptr (hostent_buf); hostent_buf = dup_hostent_ptr (gethostbyname (name)); if (!hostent_buf) { set_winsock_errno (); set_host_errno (); } else { debug_printf ("h_name %s", hostent_buf->h_name); h_errno = 0; } return hostent_buf; } /* exported as gethostbyaddr: standards? */ extern "C" struct hostent * cygwin_gethostbyaddr (const char *addr, int len, int type) { if (__check_null_invalid_struct_errno (addr, len)) return NULL; free_hostent_ptr (hostent_buf); hostent_buf = dup_hostent_ptr (gethostbyaddr (addr, len, type)); if (!hostent_buf) { set_winsock_errno (); set_host_errno (); } else { debug_printf ("h_name %s", hostent_buf->h_name); h_errno = 0; } return hostent_buf; } /* exported as accept: standards? */ extern "C" int cygwin_accept (int fd, struct sockaddr *peer, int *len) { if (peer != NULL && (check_null_invalid_struct_errno (len) || __check_null_invalid_struct_errno (peer, (unsigned) *len))) return -1; int res = -1; fhandler_socket *fh = get (fd); if (fh) res = fh->accept (peer, len); syscall_printf ("%d = accept (%d, %x, %x)", res, fd, peer, len); return res; } /* exported as bind: standards? */ extern "C" int cygwin_bind (int fd, const struct sockaddr *my_addr, int addrlen) { if (__check_null_invalid_struct_errno (my_addr, addrlen)) return -1; int res = -1; fhandler_socket *fh = get (fd); if (fh) res = fh->bind (my_addr, addrlen); syscall_printf ("%d = bind (%d, %x, %d)", res, fd, my_addr, addrlen); return res; } /* exported as getsockname: standards? */ extern "C" int cygwin_getsockname (int fd, struct sockaddr *addr, int *namelen) { if (check_null_invalid_struct_errno (namelen) || __check_null_invalid_struct_errno (addr, (unsigned) *namelen)) return -1; int res = -1; fhandler_socket *fh = get (fd); if (fh) res = fh->getsockname (addr, namelen); syscall_printf ("%d = getsockname (%d, %x, %d)", res, fd, addr, namelen); return res; } /* exported as listen: standards? */ extern "C" int cygwin_listen (int fd, int backlog) { int res = -1; fhandler_socket *fh = get (fd); if (fh) res = fh->listen (backlog); syscall_printf ("%d = listen (%d, %d)", res, fd, backlog); return res; } /* exported as shutdown: standards? */ extern "C" int cygwin_shutdown (int fd, int how) { int res = -1; sigframe thisframe (mainthread); fhandler_socket *fh = get (fd); if (fh) res = fh->shutdown (how); syscall_printf ("%d = shutdown (%d, %d)", res, fd, how); return res; } /* exported as hstrerror: BSD 4.3 */ extern "C" const char * cygwin_hstrerror (int err) { int i; for (i = 0; host_errmap[i].e != 0; ++i) if (err == host_errmap[i].e) break; return host_errmap[i].s; } /* exported as herror: BSD 4.3 */ extern "C" void cygwin_herror (const char *s) { if (s && check_null_str (s)) return; if (cygheap->fdtab.not_open (2)) return; if (s) { write (2, s, strlen (s)); write (2, ": ", 2); } const char *h_errstr = cygwin_hstrerror (h_errno); if (!h_errstr) switch (h_errno) { case NETDB_INTERNAL: h_errstr = "Resolver internal error"; break; case NETDB_SUCCESS: h_errstr = "Resolver error 0 (no error)"; break; default: h_errstr = "Unknown resolver error"; break; } write (2, h_errstr, strlen (h_errstr)); write (2, "\n", 1); } /* exported as getpeername: standards? */ extern "C" int cygwin_getpeername (int fd, struct sockaddr *name, int *len) { int res = -1; if (check_null_invalid_struct_errno (len) || __check_null_invalid_struct_errno (name, (unsigned) *len)) return -1; fhandler_socket *fh = get (fd); if (fh) res = fh->getpeername (name, len); syscall_printf ("%d = getpeername %d", res, fh->get_socket ()); return res; } /* exported as recv: standards? */ extern "C" int cygwin_recv (int fd, void *buf, int len, unsigned int flags) { int res; fhandler_socket *fh = get (fd); if (__check_null_invalid_struct_errno (buf, len) || !fh) res = -1; else res = fh->recv (buf, len, flags); syscall_printf ("%d = recv (%d, %x, %x, %x)", res, fd, buf, len, flags); return res; } /* exported as send: standards? */ extern "C" int cygwin_send (int fd, const void *buf, int len, unsigned int flags) { int res; fhandler_socket *fh = get (fd); if (__check_invalid_read_ptr_errno (buf, len) || !fh) res = -1; else res = fh->send (buf, len, flags); syscall_printf ("%d = send (%d, %x, %d, %x)", res, fd, buf, len, flags); return res; } /* getdomainname: standards? */ extern "C" int getdomainname (char *domain, size_t len) { /* * This works for Win95 only if the machine is configured to use MS-TCP. * If a third-party TCP is being used this will fail. * FIXME: On Win95, is there a way to portably check the TCP stack * in use and include paths for the Domain name in each ? * Punt for now and assume MS-TCP on Win95. */ if (__check_null_invalid_struct_errno (domain, len)) return -1; reg_key r (HKEY_LOCAL_MACHINE, KEY_READ, (!wincap.is_winnt ()) ? "System" : "SYSTEM", "CurrentControlSet", "Services", (!wincap.is_winnt ()) ? "VxD" : "Tcpip", (!wincap.is_winnt ()) ? "MSTCP" : "Parameters", NULL); /* FIXME: Are registry keys case sensitive? */ if (r.error () || r.get_string ("Domain", domain, len, "") != ERROR_SUCCESS) { __seterrno (); return -1; } return 0; } /* Cygwin internal */ /* Fill out an ifconf struct. */ /* * IFCONF 98/ME, NTSP4, W2K: * Use IP Helper Library */ static void get_2k_ifconf (struct ifconf *ifc, int what) { int cnt = 0; char eth[2] = "/", ppp[2] = "/", slp[2] = "/", sub[2] = "0", tok[2] = "/"; /* Union maps buffer to correct struct */ struct ifreq *ifr = ifc->ifc_req; DWORD if_cnt, ip_cnt, lip, lnp; DWORD siz_if_table = 0; DWORD siz_ip_table = 0; PMIB_IFTABLE ift; PMIB_IPADDRTABLE ipt; struct sockaddr_in *sa = NULL; struct sockaddr *so = NULL; if (GetIfTable(NULL, &siz_if_table, TRUE) == ERROR_INSUFFICIENT_BUFFER && GetIpAddrTable(NULL, &siz_ip_table, TRUE) == ERROR_INSUFFICIENT_BUFFER && (ift = (PMIB_IFTABLE) alloca (siz_if_table)) && (ipt = (PMIB_IPADDRTABLE) alloca (siz_ip_table)) && !GetIfTable(ift, &siz_if_table, TRUE) && !GetIpAddrTable(ipt, &siz_ip_table, TRUE)) { /* Iterate over all known interfaces */ for (if_cnt = 0; if_cnt < ift->dwNumEntries; ++if_cnt) { *sub = '0'; /* Iterate over all configured IP-addresses */ for (ip_cnt = 0; ip_cnt < ipt->dwNumEntries; ++ip_cnt) { /* Does the IP address belong to the interface? */ if (ipt->table[ip_cnt].dwIndex == ift->table[if_cnt].dwIndex) { /* Setup the interface name */ switch (ift->table[if_cnt].dwType) { case MIB_IF_TYPE_TOKENRING: ++*tok; strcpy (ifr->ifr_name, "tok"); strcat (ifr->ifr_name, tok); break; case MIB_IF_TYPE_ETHERNET: if (*sub == '0') ++*eth; strcpy (ifr->ifr_name, "eth"); strcat (ifr->ifr_name, eth); break; case MIB_IF_TYPE_PPP: ++*ppp; strcpy (ifr->ifr_name, "ppp"); strcat (ifr->ifr_name, ppp); break; case MIB_IF_TYPE_SLIP: ++*slp; strcpy (ifr->ifr_name, "slp"); strcat (ifr->ifr_name, slp); break; case MIB_IF_TYPE_LOOPBACK: strcpy (ifr->ifr_name, "lo"); break; default: continue; } if (*sub > '0') { strcat (ifr->ifr_name, ":"); strcat (ifr->ifr_name, sub); } ++*sub; /* setup sockaddr struct */ switch (what) { case SIOCGIFCONF: case SIOCGIFADDR: sa = (struct sockaddr_in *) &ifr->ifr_addr; sa->sin_addr.s_addr = ipt->table[ip_cnt].dwAddr; sa->sin_family = AF_INET; sa->sin_port = 0; break; case SIOCGIFBRDADDR: sa = (struct sockaddr_in *) &ifr->ifr_broadaddr; #if 0 /* Unfortunately, the field returns only crap. */ sa->sin_addr.s_addr = ipt->table[ip_cnt].dwBCastAddr; #else lip = ipt->table[ip_cnt].dwAddr; lnp = ipt->table[ip_cnt].dwMask; sa->sin_addr.s_addr = lip & lnp | ~lnp; sa->sin_family = AF_INET; sa->sin_port = 0; #endif break; case SIOCGIFNETMASK: sa = (struct sockaddr_in *) &ifr->ifr_netmask; sa->sin_addr.s_addr = ipt->table[ip_cnt].dwMask; sa->sin_family = AF_INET; sa->sin_port = 0; break; case SIOCGIFHWADDR: so = &ifr->ifr_hwaddr; for (UINT i = 0; i < IFHWADDRLEN; ++i) if (i >= ift->table[if_cnt].dwPhysAddrLen) so->sa_data[i] = '\0'; else so->sa_data[i] = ift->table[if_cnt].bPhysAddr[i]; so->sa_family = AF_INET; break; case SIOCGIFMETRIC: ifr->ifr_metric = 1; break; case SIOCGIFMTU: ifr->ifr_mtu = ift->table[if_cnt].dwMtu; break; } ++cnt; if ((caddr_t) ++ifr > ifc->ifc_buf + ifc->ifc_len - sizeof (struct ifreq)) goto done; } } } } done: /* Set the correct length */ ifc->ifc_len = cnt * sizeof (struct ifreq); } /* * IFCONF Windows NT < SP4: * Look at the Bind value in * HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Linkage\ * This is a REG_MULTI_SZ with strings of the form: * \Device\, where netcard is the name of the net device. * Then look under: * HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\\ * Parameters\Tcpip * at the IPAddress, Subnetmask and DefaultGateway values for the * required values. */ static void get_nt_ifconf (struct ifconf *ifc, int what) { HKEY key; unsigned long lip, lnp; struct sockaddr_in *sa = NULL; struct sockaddr *so = NULL; DWORD size; int cnt = 1; char *binding = (char *) 0; /* Union maps buffer to correct struct */ struct ifreq *ifr = ifc->ifc_req; if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, "SYSTEM\\" "CurrentControlSet\\" "Services\\" "Tcpip\\" "Linkage", 0, KEY_READ, &key) == ERROR_SUCCESS) { if (RegQueryValueEx (key, "Bind", NULL, NULL, NULL, &size) == ERROR_SUCCESS) { binding = (char *) alloca (size); if (RegQueryValueEx (key, "Bind", NULL, NULL, (unsigned char *) binding, &size) != ERROR_SUCCESS) { binding = NULL; } } RegCloseKey (key); } if (binding) { char *bp, eth[2] = "/"; char cardkey[256], ipaddress[256], netmask[256]; for (bp = binding; *bp; bp += strlen (bp) + 1) { bp += strlen ("\\Device\\"); strcpy (cardkey, "SYSTEM\\CurrentControlSet\\Services\\"); strcat (cardkey, bp); strcat (cardkey, "\\Parameters\\Tcpip"); if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, cardkey, 0, KEY_READ, &key) != ERROR_SUCCESS) continue; if (RegQueryValueEx (key, "IPAddress", NULL, NULL, (unsigned char *) ipaddress, (size = 256, &size)) == ERROR_SUCCESS && RegQueryValueEx (key, "SubnetMask", NULL, NULL, (unsigned char *) netmask, (size = 256, &size)) == ERROR_SUCCESS) { char *ip, *np; char dhcpaddress[256], dhcpnetmask[256]; for (ip = ipaddress, np = netmask; *ip && *np; ip += strlen (ip) + 1, np += strlen (np) + 1) { if ((caddr_t) ++ifr > ifc->ifc_buf + ifc->ifc_len - sizeof (struct ifreq)) break; if (! strncmp (bp, "NdisWan", 7)) { strcpy (ifr->ifr_name, "ppp"); strcat (ifr->ifr_name, bp + 7); } else { ++*eth; strcpy (ifr->ifr_name, "eth"); strcat (ifr->ifr_name, eth); } memset (&ifr->ifr_addr, '\0', sizeof ifr->ifr_addr); if (cygwin_inet_addr (ip) == 0L && RegQueryValueEx (key, "DhcpIPAddress", NULL, NULL, (unsigned char *) dhcpaddress, (size = 256, &size)) == ERROR_SUCCESS && RegQueryValueEx (key, "DhcpSubnetMask", NULL, NULL, (unsigned char *) dhcpnetmask, (size = 256, &size)) == ERROR_SUCCESS) { switch (what) { case SIOCGIFCONF: case SIOCGIFADDR: sa = (struct sockaddr_in *) &ifr->ifr_addr; sa->sin_addr.s_addr = cygwin_inet_addr (dhcpaddress); sa->sin_family = AF_INET; sa->sin_port = 0; break; case SIOCGIFBRDADDR: lip = cygwin_inet_addr (dhcpaddress); lnp = cygwin_inet_addr (dhcpnetmask); sa = (struct sockaddr_in *) &ifr->ifr_broadaddr; sa->sin_addr.s_addr = lip & lnp | ~lnp; sa->sin_family = AF_INET; sa->sin_port = 0; break; case SIOCGIFNETMASK: sa = (struct sockaddr_in *) &ifr->ifr_netmask; sa->sin_addr.s_addr = cygwin_inet_addr (dhcpnetmask); sa->sin_family = AF_INET; sa->sin_port = 0; break; case SIOCGIFHWADDR: so = &ifr->ifr_hwaddr; memset (so->sa_data, 0, IFHWADDRLEN); so->sa_family = AF_INET; break; case SIOCGIFMETRIC: ifr->ifr_metric = 1; break; case SIOCGIFMTU: ifr->ifr_mtu = 1500; break; } } else { switch (what) { case SIOCGIFCONF: case SIOCGIFADDR: sa = (struct sockaddr_in *) &ifr->ifr_addr; sa->sin_addr.s_addr = cygwin_inet_addr (ip); sa->sin_family = AF_INET; sa->sin_port = 0; break; case SIOCGIFBRDADDR: lip = cygwin_inet_addr (ip); lnp = cygwin_inet_addr (np); sa = (struct sockaddr_in *) &ifr->ifr_broadaddr; sa->sin_addr.s_addr = lip & lnp | ~lnp; sa->sin_family = AF_INET; sa->sin_port = 0; break; case SIOCGIFNETMASK: sa = (struct sockaddr_in *) &ifr->ifr_netmask; sa->sin_addr.s_addr = cygwin_inet_addr (np); sa->sin_family = AF_INET; sa->sin_port = 0; break; case SIOCGIFHWADDR: so = &ifr->ifr_hwaddr; memset (so->sa_data, 0, IFHWADDRLEN); so->sa_family = AF_INET; break; case SIOCGIFMETRIC: ifr->ifr_metric = 1; break; case SIOCGIFMTU: ifr->ifr_mtu = 1500; break; } } ++cnt; } } RegCloseKey (key); } } /* Set the correct length */ ifc->ifc_len = cnt * sizeof (struct ifreq); } /* * IFCONF Windows 95: * HKLM/Enum/Network/MSTCP/"*" * -> Value "Driver" enthält Subkey relativ zu * HKLM/System/CurrentControlSet/Class/ * -> In Subkey "Bindings" die Values aufzählen * -> Enthält Subkeys der Form "VREDIR\*" * Das * ist ein Subkey relativ zu * HKLM/System/CurrentControlSet/Class/Net/ * HKLM/System/CurrentControlSet/Class/"Driver" * -> Value "IPAddress" * -> Value "IPMask" * HKLM/System/CurrentControlSet/Class/Net/"*"(aus "VREDIR\*") * -> Wenn Value "AdapterName" == "MS$PPP" -> ppp interface * -> Value "DriverDesc" enthält den Namen * */ static void get_95_ifconf (struct ifconf *ifc, int what) { HKEY key; unsigned long lip, lnp; struct sockaddr_in *sa = NULL; struct sockaddr *so = NULL; FILETIME update; LONG res; DWORD size; int cnt = 1; char ifname[256]; char eth[2] = "/"; char ppp[2] = "/"; /* Union maps buffer to correct struct */ struct ifreq *ifr = ifc->ifc_req; if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, "Enum\\Network\\MSTCP", 0, KEY_READ, &key) != ERROR_SUCCESS) { /* Set the correct length */ ifc->ifc_len = cnt * sizeof (struct ifreq); return; } for (int i = 0; (res = RegEnumKeyEx (key, i, ifname, (size = sizeof ifname, &size), 0, 0, 0, &update)) != ERROR_NO_MORE_ITEMS; ++i) { HKEY ifkey, subkey; char driver[256], classname[256], netname[256]; char adapter[256], ip[256], np[256]; if (res != ERROR_SUCCESS || RegOpenKeyEx (key, ifname, 0, KEY_READ, &ifkey) != ERROR_SUCCESS) continue; if (RegQueryValueEx (ifkey, "Driver", 0, NULL, (unsigned char *) driver, (size = sizeof driver, &size)) != ERROR_SUCCESS) { RegCloseKey (ifkey); continue; } strcpy (classname, "System\\CurrentControlSet\\Services\\Class\\"); strcat (classname, driver); if ((res = RegOpenKeyEx (HKEY_LOCAL_MACHINE, classname, 0, KEY_READ, &subkey)) != ERROR_SUCCESS) { RegCloseKey (ifkey); continue; } if (RegQueryValueEx (subkey, "IPAddress", 0, NULL, (unsigned char *) ip, (size = sizeof ip, &size)) == ERROR_SUCCESS && RegQueryValueEx (subkey, "IPMask", 0, NULL, (unsigned char *) np, (size = sizeof np, &size)) == ERROR_SUCCESS) { if ((caddr_t)++ifr > ifc->ifc_buf + ifc->ifc_len - sizeof (struct ifreq)) goto out; switch (what) { case SIOCGIFCONF: case SIOCGIFADDR: sa = (struct sockaddr_in *) &ifr->ifr_addr; sa->sin_addr.s_addr = cygwin_inet_addr (ip); sa->sin_family = AF_INET; sa->sin_port = 0; break; case SIOCGIFBRDADDR: lip = cygwin_inet_addr (ip); lnp = cygwin_inet_addr (np); sa = (struct sockaddr_in *) &ifr->ifr_broadaddr; sa->sin_addr.s_addr = lip & lnp | ~lnp; sa->sin_family = AF_INET; sa->sin_port = 0; break; case SIOCGIFNETMASK: sa = (struct sockaddr_in *) &ifr->ifr_netmask; sa->sin_addr.s_addr = cygwin_inet_addr (np); sa->sin_family = AF_INET; sa->sin_port = 0; break; case SIOCGIFHWADDR: so = &ifr->ifr_hwaddr; memset (so->sa_data, 0, IFHWADDRLEN); so->sa_family = AF_INET; break; case SIOCGIFMETRIC: ifr->ifr_metric = 1; break; case SIOCGIFMTU: ifr->ifr_mtu = 1500; break; } } RegCloseKey (subkey); strcpy (netname, "System\\CurrentControlSet\\Services\\Class\\Net\\"); strcat (netname, ifname); if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, netname, 0, KEY_READ, &subkey) != ERROR_SUCCESS) { RegCloseKey (ifkey); --ifr; continue; } if (RegQueryValueEx (subkey, "AdapterName", 0, NULL, (unsigned char *) adapter, (size = sizeof adapter, &size)) == ERROR_SUCCESS && strcasematch (adapter, "MS$PPP")) { ++*ppp; strcpy (ifr->ifr_name, "ppp"); strcat (ifr->ifr_name, ppp); } else { ++*eth; strcpy (ifr->ifr_name, "eth"); strcat (ifr->ifr_name, eth); } RegCloseKey (subkey); RegCloseKey (ifkey); ++cnt; } out: RegCloseKey (key); /* Set the correct length */ ifc->ifc_len = cnt * sizeof (struct ifreq); } int get_ifconf (struct ifconf *ifc, int what) { unsigned long lip, lnp; struct sockaddr_in *sa; if (check_null_invalid_struct_errno (ifc)) return -1; /* Union maps buffer to correct struct */ struct ifreq *ifr = ifc->ifc_req; /* Ensure we have space for two struct ifreqs, fail if not. */ if (ifc->ifc_len < (int) (2 * sizeof (struct ifreq))) { set_errno (EFAULT); return -1; } /* Set up interface lo0 first */ strcpy (ifr->ifr_name, "lo"); memset (&ifr->ifr_addr, '\0', sizeof (ifr->ifr_addr)); switch (what) { case SIOCGIFCONF: case SIOCGIFADDR: sa = (struct sockaddr_in *) &ifr->ifr_addr; sa->sin_addr.s_addr = htonl (INADDR_LOOPBACK); sa->sin_family = AF_INET; sa->sin_port = 0; break; case SIOCGIFBRDADDR: lip = htonl (INADDR_LOOPBACK); lnp = cygwin_inet_addr ("255.0.0.0"); sa = (struct sockaddr_in *) &ifr->ifr_broadaddr; sa->sin_addr.s_addr = lip & lnp | ~lnp; sa->sin_family = AF_INET; sa->sin_port = 0; break; case SIOCGIFNETMASK: sa = (struct sockaddr_in *) &ifr->ifr_netmask; sa->sin_addr.s_addr = cygwin_inet_addr ("255.0.0.0"); sa->sin_family = AF_INET; sa->sin_port = 0; break; case SIOCGIFHWADDR: ifr->ifr_hwaddr.sa_family = AF_INET; memset (ifr->ifr_hwaddr.sa_data, 0, IFHWADDRLEN); break; case SIOCGIFMETRIC: ifr->ifr_metric = 1; break; case SIOCGIFMTU: /* This funny value is returned by `ifconfig lo' on Linux 2.2 kernel. */ ifr->ifr_mtu = 3924; break; default: set_errno (EINVAL); return -1; } OSVERSIONINFO os_version_info; memset (&os_version_info, 0, sizeof os_version_info); os_version_info.dwOSVersionInfoSize = sizeof (OSVERSIONINFO); GetVersionEx (&os_version_info); if (wincap.has_ip_helper_lib ()) get_2k_ifconf (ifc, what); else if (wincap.is_winnt ()) get_nt_ifconf (ifc, what); else get_95_ifconf (ifc, what); return 0; } /* exported as rcmd: standards? */ extern "C" int cygwin_rcmd (char **ahost, unsigned short inport, char *locuser, char *remuser, char *cmd, int *fd2p) { int res = -1; SOCKET fd2s; sigframe thisframe (mainthread); if (check_null_invalid_struct_errno (ahost) || check_null_empty_str_errno (*ahost) || (locuser && check_null_empty_str_errno (locuser)) || (remuser && check_null_str_errno (remuser))) return (int) INVALID_SOCKET; cygheap_fdnew res_fd; if (res_fd < 0) goto done; if (fd2p) { cygheap_fdnew newfd (res_fd, false); if (*fd2p < 0) goto done; *fd2p = newfd; } res = rcmd (ahost, inport, locuser, remuser, cmd, fd2p ? &fd2s : NULL); if (res == (int) INVALID_SOCKET) goto done; else { fdsock (res_fd, "/dev/tcp", res); res = res_fd; } if (fd2p) fdsock (*fd2p, "/dev/tcp", fd2s); done: syscall_printf ("%d = rcmd (...)", res); return res; } /* exported as rresvport: standards? */ extern "C" int cygwin_rresvport (int *port) { int res; sigframe thisframe (mainthread); if (check_null_invalid_struct_errno (port)) return -1; cygheap_fdnew res_fd; if (res_fd < 0) res = -1; else { res = rresvport (port); if (res != (int) INVALID_SOCKET) { fdsock (res_fd, "/dev/tcp", res); res = res_fd; } } syscall_printf ("%d = rresvport (%d)", res, port ? *port : 0); return res; } /* exported as rexec: standards? */ extern "C" int cygwin_rexec (char **ahost, unsigned short inport, char *locuser, char *password, char *cmd, int *fd2p) { int res = -1; SOCKET fd2s; sigframe thisframe (mainthread); if (check_null_invalid_struct_errno (ahost) || check_null_empty_str_errno (*ahost) || (locuser && check_null_empty_str_errno (locuser)) || (password && check_null_str_errno (password))) return (int) INVALID_SOCKET; cygheap_fdnew res_fd; if (res_fd < 0) goto done; if (fd2p) { cygheap_fdnew newfd (res_fd); if (newfd < 0) goto done; *fd2p = newfd; } res = rexec (ahost, inport, locuser, password, cmd, fd2p ? &fd2s : NULL); if (res == (int) INVALID_SOCKET) goto done; else { fdsock (res_fd, "/dev/tcp", res); res = res_fd; } if (fd2p) fdsock (*fd2p, "/dev/tcp", fd2s); done: syscall_printf ("%d = rexec (...)", res); return res; } /* socketpair: standards? */ /* Win32 supports AF_INET only, so ignore domain and protocol arguments */ extern "C" int socketpair (int family, int type, int protocol, int *sb) { int res = -1; SOCKET insock, outsock, newsock; struct sockaddr_in sock_in, sock_out; int len; cygheap_fdnew sb0; fhandler_socket *fh; if (__check_null_invalid_struct_errno (sb, 2 * sizeof(int))) return -1; if (family != AF_LOCAL && family != AF_INET) { set_errno (EAFNOSUPPORT); goto done; } if (type != SOCK_STREAM && type != SOCK_DGRAM) { set_errno (EPROTOTYPE); goto done; } if ((family == AF_LOCAL && protocol != PF_UNSPEC && protocol != PF_LOCAL) || (family == AF_INET && protocol != PF_UNSPEC && protocol != PF_INET)) { set_errno (EPROTONOSUPPORT); goto done; } if (sb0 < 0) goto done; else { sb[0] = sb0; cygheap_fdnew sb1 (sb0, false); if (sb1 < 0) goto done; sb[1] = sb1; } /* create the first socket */ newsock = socket (AF_INET, type, 0); if (newsock == INVALID_SOCKET) { debug_printf ("first socket call failed"); set_winsock_errno (); goto done; } /* bind the socket to any unused port */ sock_in.sin_family = AF_INET; sock_in.sin_port = 0; sock_in.sin_addr.s_addr = INADDR_ANY; if (bind (newsock, (struct sockaddr *) &sock_in, sizeof (sock_in)) < 0) { debug_printf ("bind failed"); set_winsock_errno (); closesocket (newsock); goto done; } len = sizeof (sock_in); if (getsockname (newsock, (struct sockaddr *) &sock_in, &len) < 0) { debug_printf ("getsockname error"); set_winsock_errno (); closesocket (newsock); goto done; } /* For stream sockets, create a listener */ if (type == SOCK_STREAM) listen (newsock, 2); /* create a connecting socket */ outsock = socket (AF_INET, type, 0); if (outsock == INVALID_SOCKET) { debug_printf ("second socket call failed"); set_winsock_errno (); closesocket (newsock); goto done; } /* For datagram sockets, bind the 2nd socket to an unused address, too */ if (type == SOCK_DGRAM) { sock_out.sin_family = AF_INET; sock_out.sin_port = 0; sock_out.sin_addr.s_addr = INADDR_ANY; if (bind (outsock, (struct sockaddr *) &sock_out, sizeof (sock_out)) < 0) { debug_printf ("bind failed"); set_winsock_errno (); closesocket (newsock); closesocket (outsock); goto done; } len = sizeof (sock_out); if (getsockname (outsock, (struct sockaddr *) &sock_out, &len) < 0) { debug_printf ("getsockname error"); set_winsock_errno (); closesocket (newsock); closesocket (outsock); goto done; } } /* Force IP address to loopback */ sock_in.sin_addr.s_addr = htonl (INADDR_LOOPBACK); if (type == SOCK_DGRAM) sock_out.sin_addr.s_addr = htonl (INADDR_LOOPBACK); /* Do a connect */ if (connect (outsock, (struct sockaddr *) &sock_in, sizeof (sock_in)) < 0) { debug_printf ("connect error"); set_winsock_errno (); closesocket (newsock); closesocket (outsock); goto done; } if (type == SOCK_STREAM) { /* For stream sockets, accept the connection and close the listener */ len = sizeof (sock_in); insock = accept (newsock, (struct sockaddr *) &sock_in, &len); if (insock == INVALID_SOCKET) { debug_printf ("accept error"); set_winsock_errno (); closesocket (newsock); closesocket (outsock); goto done; } closesocket (newsock); } else { /* For datagram sockets, connect the 2nd socket */ if (connect (newsock, (struct sockaddr *) &sock_out, sizeof (sock_out)) < 0) { debug_printf ("connect error"); set_winsock_errno (); closesocket (newsock); closesocket (outsock); goto done; } insock = newsock; } res = 0; if (family == AF_LOCAL) { fh = fdsock (sb[0], type == SOCK_STREAM ? "/dev/streamsocket" : "/dev/dgsocket", insock); fh->set_sun_path (""); fh->set_addr_family (AF_LOCAL); fh->set_socket_type (type); fh = fdsock (sb[1], type == SOCK_STREAM ? "/dev/streamsocket" : "/dev/dgsocket", outsock); fh->set_sun_path (""); fh->set_addr_family (AF_LOCAL); fh->set_socket_type (type); } else { fh = fdsock (sb[0], type == SOCK_STREAM ? "/dev/tcp" : "/dev/udp", insock); fh->set_addr_family (AF_INET); fh->set_socket_type (type); fh = fdsock (sb[1], type == SOCK_STREAM ? "/dev/tcp" : "/dev/udp", outsock); fh->set_addr_family (AF_INET); fh->set_socket_type (type); } done: syscall_printf ("%d = socketpair (...)", res); return res; } /* sethostent: standards? */ extern "C" void sethostent (int) { } /* endhostent: standards? */ extern "C" void endhostent (void) { } /* exported as recvmsg: standards? */ extern "C" int cygwin_recvmsg (int s, struct msghdr *msg, int flags) { if (check_null_invalid_struct_errno (msg)) return -1; fhandler_socket *fh = get (s); if (!fh) { set_errno (EINVAL); return -1; } return fh->recvmsg (msg, flags); } /* exported as sendmsg: standards? */ extern "C" int cygwin_sendmsg (int s, const struct msghdr *msg, int flags) { if (__check_invalid_read_ptr_errno (msg, sizeof msg)) return -1; fhandler_socket *fh = get (s); if (!fh) { set_errno (EINVAL); return -1; } return fh->sendmsg (msg, flags); }