diff options
Diffstat (limited to 'winsup/cygwin/fhandler_socket.cc')
| -rw-r--r-- | winsup/cygwin/fhandler_socket.cc | 559 |
1 files changed, 0 insertions, 559 deletions
diff --git a/winsup/cygwin/fhandler_socket.cc b/winsup/cygwin/fhandler_socket.cc deleted file mode 100644 index 3ef35687e..000000000 --- a/winsup/cygwin/fhandler_socket.cc +++ /dev/null @@ -1,559 +0,0 @@ -/* fhandler_socket.cc. See fhandler.h for a description of the fhandler classes. - - Copyright 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 <errno.h> -#include <sys/socket.h> -#include <asm/byteorder.h> - -#include <stdlib.h> -#include <unistd.h> -#define USE_SYS_TYPES_FD_SET -#include <winsock2.h> -#include "cygerrno.h" -#include "security.h" -#include "cygwin/version.h" -#include "perprocess.h" -#include "fhandler.h" -#include "path.h" -#include "dtable.h" -#include "cygheap.h" -#include "sigproc.h" -#include "wsock_event.h" - -#define SECRET_EVENT_NAME "cygwin.local_socket.secret.%d.%08x-%08x-%08x-%08x" -#define ENTROPY_SOURCE_NAME "/dev/urandom" -#define ENTROPY_SOURCE_DEV_UNIT 9 - -fhandler_dev_random* entropy_source; - -/**********************************************************************/ -/* fhandler_socket */ - -fhandler_socket::fhandler_socket () - : fhandler_base (FH_SOCKET), sun_path (NULL) -{ - set_need_fork_fixup (); - prot_info_ptr = (LPWSAPROTOCOL_INFOA) cmalloc (HEAP_BUF, - sizeof (WSAPROTOCOL_INFOA)); -} - -fhandler_socket::~fhandler_socket () -{ - if (prot_info_ptr) - cfree (prot_info_ptr); - if (sun_path) - cfree (sun_path); -} - -void -fhandler_socket::set_connect_secret () -{ - if (!entropy_source) - { - void *buf = malloc (sizeof (fhandler_dev_random)); - entropy_source = new (buf) fhandler_dev_random (ENTROPY_SOURCE_DEV_UNIT); - } - if (entropy_source && - !entropy_source->open (NULL, O_RDONLY)) - { - delete entropy_source; - entropy_source = NULL; - } - if (!entropy_source || - (entropy_source->read (connect_secret, sizeof (connect_secret)) != - sizeof (connect_secret))) - bzero ((char*) connect_secret, sizeof (connect_secret)); -} - -void -fhandler_socket::get_connect_secret (char* buf) -{ - __small_sprintf (buf, "%08x-%08x-%08x-%08x", - connect_secret [0], connect_secret [1], - connect_secret [2], connect_secret [3]); -} - -HANDLE -fhandler_socket::create_secret_event (int* secret) -{ - char buf [128]; - int* secret_ptr = (secret ? : connect_secret); - struct sockaddr_in sin; - int sin_len = sizeof (sin); - - if (getsockname (get_socket (), (struct sockaddr*) &sin, &sin_len)) - { - debug_printf ("error getting local socket name (%d)", WSAGetLastError ()); - return NULL; - } - - __small_sprintf (buf, SECRET_EVENT_NAME, sin.sin_port, - secret_ptr [0], secret_ptr [1], - secret_ptr [2], secret_ptr [3]); - secret_event = CreateEvent (get_inheritance(true), FALSE, FALSE, buf); - if (!secret_event && GetLastError () == ERROR_ALREADY_EXISTS) - secret_event = OpenEvent (EVENT_ALL_ACCESS, FALSE, buf); - - if (secret_event) - ProtectHandle (secret_event); - - return secret_event; -} - -void -fhandler_socket::signal_secret_event () -{ - if (!secret_event) - debug_printf ("no secret event?"); - else - { - SetEvent (secret_event); - debug_printf ("signaled secret_event"); - } -} - -void -fhandler_socket::close_secret_event () -{ - if (secret_event) - ForceCloseHandle (secret_event); - secret_event = NULL; -} - -int -fhandler_socket::check_peer_secret_event (struct sockaddr_in* peer, int* secret) -{ - char buf [128]; - HANDLE ev; - int* secret_ptr = (secret ? : connect_secret); - - __small_sprintf (buf, SECRET_EVENT_NAME, peer->sin_port, - secret_ptr [0], secret_ptr [1], - secret_ptr [2], secret_ptr [3]); - ev = CreateEvent (&sec_all_nih, FALSE, FALSE, buf); - if (!ev && GetLastError () == ERROR_ALREADY_EXISTS) - { - debug_printf ("%s event already exist"); - ev = OpenEvent (EVENT_ALL_ACCESS, FALSE, buf); - } - - signal_secret_event (); - - if (ev) - { - DWORD rc = WaitForSingleObject (ev, 10000); - debug_printf ("WFSO rc=%d", rc); - CloseHandle (ev); - return (rc == WAIT_OBJECT_0 ? 1 : 0 ); - } - else - return 0; -} - -void -fhandler_socket::fixup_before_fork_exec (DWORD win_proc_id) -{ - if (!winsock2_active) - { - fhandler_base::fixup_before_fork_exec (win_proc_id); - debug_printf ("Without Winsock 2.0"); - } - else if (!WSADuplicateSocketA (get_socket (), win_proc_id, prot_info_ptr)) - debug_printf ("WSADuplicateSocket went fine, sock %p, win_proc_id %d, prot_info_ptr %p", - get_socket (), win_proc_id, prot_info_ptr); - else - { - debug_printf ("WSADuplicateSocket error, sock %p, win_proc_id %d, prot_info_ptr %p", - get_socket (), win_proc_id, prot_info_ptr); - set_winsock_errno (); - } -} - -extern "C" void __stdcall load_wsock32 (); -void -fhandler_socket::fixup_after_fork (HANDLE parent) -{ - SOCKET new_sock; - - debug_printf ("WSASocket begin, dwServiceFlags1=%d", - prot_info_ptr->dwServiceFlags1); - - if ((new_sock = WSASocketA (FROM_PROTOCOL_INFO, - FROM_PROTOCOL_INFO, - FROM_PROTOCOL_INFO, - prot_info_ptr, 0, 0)) == INVALID_SOCKET) - { - debug_printf ("WSASocket error"); - set_winsock_errno (); - } - else if (!new_sock && !winsock2_active) - { - load_wsock32 (); - fhandler_base::fixup_after_fork (parent); - debug_printf ("Without Winsock 2.0"); - } - else - { - debug_printf ("WSASocket went fine new_sock %p, old_sock %p", new_sock, get_io_handle ()); - set_io_handle ((HANDLE) new_sock); - } - - if (secret_event) - fork_fixup (parent, secret_event, "secret_event"); -} - -void -fhandler_socket::fixup_after_exec (HANDLE parent) -{ - debug_printf ("here"); - if (!get_close_on_exec ()) - fixup_after_fork (parent); -#if 0 - else if (!winsock2_active) - closesocket (get_socket ()); -#endif -} - -int -fhandler_socket::dup (fhandler_base *child) -{ - debug_printf ("here"); - fhandler_socket *fhs = (fhandler_socket *) child; - fhs->addr_family = addr_family; - fhs->set_io_handle (get_io_handle ()); - - fhs->fixup_before_fork_exec (GetCurrentProcessId ()); - if (winsock2_active) - { - fhs->fixup_after_fork (hMainProc); - return 0; - } - return fhandler_base::dup (child); -} - -int __stdcall -fhandler_socket::fstat (struct __stat64 *buf, path_conv *pc) -{ - int res = fhandler_base::fstat (buf, pc); - if (!res) - buf->st_ino = (ino_t) get_handle (); - return res; -} - -int -fhandler_socket::recv (void *ptr, size_t len, unsigned int flags) -{ - int res = -1; - wsock_event wsock_evt; - LPWSAOVERLAPPED ovr; - - sigframe thisframe (mainthread); - if (is_nonblocking () || !(ovr = wsock_evt.prepare ())) - { - debug_printf ("Fallback to winsock 1 recv call"); - if ((res = ::recv (get_socket (), (char *) ptr, len, flags)) - == SOCKET_ERROR) - { - set_winsock_errno (); - res = -1; - } - } - else - { - WSABUF wsabuf = { len, (char *) ptr }; - DWORD ret = 0; - if (WSARecv (get_socket (), &wsabuf, 1, &ret, (DWORD *)&flags, - ovr, NULL) != SOCKET_ERROR) - res = ret; - else if ((res = WSAGetLastError ()) != WSA_IO_PENDING) - { - set_winsock_errno (); - res = -1; - } - else if ((res = wsock_evt.wait (get_socket (), (DWORD *)&flags)) == -1) - set_winsock_errno (); - } - return res; -} - -int __stdcall -fhandler_socket::read (void *ptr, size_t len) -{ - return recv (ptr, len, 0); -} - -int -fhandler_socket::send (const void *ptr, size_t len, unsigned int flags) -{ - int res = -1; - wsock_event wsock_evt; - LPWSAOVERLAPPED ovr; - - sigframe thisframe (mainthread); - if (is_nonblocking () || !(ovr = wsock_evt.prepare ())) - { - debug_printf ("Fallback to winsock 1 send call"); - if ((res = ::send (get_socket (), (const char *) ptr, len, flags)) - == SOCKET_ERROR) - { - set_winsock_errno (); - res = -1; - } - } - else - { - WSABUF wsabuf = { len, (char *) ptr }; - DWORD ret = 0; - if (WSASend (get_socket (), &wsabuf, 1, &ret, (DWORD)flags, - ovr, NULL) != SOCKET_ERROR) - res = ret; - else if ((res = WSAGetLastError ()) != WSA_IO_PENDING) - { - set_winsock_errno (); - res = -1; - } - else if ((res = wsock_evt.wait (get_socket (), (DWORD *)&flags)) == -1) - set_winsock_errno (); - } - return res; -} - -int -fhandler_socket::write (const void *ptr, size_t len) -{ - return send (ptr, len, 0); -} - -/* Cygwin internal */ -int -fhandler_socket::close () -{ - int res = 0; - sigframe thisframe (mainthread); - - /* HACK to allow a graceful shutdown even if shutdown() hasn't been - called by the application. Note that this isn't the ultimate - solution but it helps in many cases. */ - struct linger linger; - linger.l_onoff = 1; - linger.l_linger = 240; /* seconds. default 2MSL value according to MSDN. */ - setsockopt (get_socket (), SOL_SOCKET, SO_LINGER, - (const char *)&linger, sizeof linger); - - while ((res = closesocket (get_socket ())) != 0) - { - if (WSAGetLastError () != WSAEWOULDBLOCK) - { - set_winsock_errno (); - res = -1; - break; - } - if (WaitForSingleObject (signal_arrived, 10) == WAIT_OBJECT_0) - { - set_errno (EINTR); - res = -1; - break; - } - WSASetLastError (0); - } - - close_secret_event (); - - debug_printf ("%d = fhandler_socket::close()", res); - return res; -} - -#define ASYNC_MASK (FD_READ|FD_WRITE|FD_OOB|FD_ACCEPT|FD_CONNECT) - -/* Cygwin internal */ -int -fhandler_socket::ioctl (unsigned int cmd, void *p) -{ - extern int get_ifconf (struct ifconf *ifc, int what); /* net.cc */ - int res; - struct ifconf ifc, *ifcp; - struct ifreq *ifr, *ifrp; - sigframe thisframe (mainthread); - - switch (cmd) - { - case SIOCGIFCONF: - ifcp = (struct ifconf *) p; - if (!ifcp) - { - set_errno (EINVAL); - return -1; - } - res = get_ifconf (ifcp, cmd); - if (res) - debug_printf ("error in get_ifconf\n"); - break; - case SIOCGIFFLAGS: - ifr = (struct ifreq *) p; - if (ifr == 0) - { - set_errno (EINVAL); - return -1; - } - ifr->ifr_flags = IFF_NOTRAILERS | IFF_UP | IFF_RUNNING; - if (ntohl (((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr) - == INADDR_LOOPBACK) - ifr->ifr_flags |= IFF_LOOPBACK; - else - ifr->ifr_flags |= IFF_BROADCAST; - res = 0; - break; - case SIOCGIFBRDADDR: - case SIOCGIFNETMASK: - case SIOCGIFADDR: - case SIOCGIFHWADDR: - case SIOCGIFMETRIC: - case SIOCGIFMTU: - { - ifc.ifc_len = 2048; - ifc.ifc_buf = (char *) alloca (2048); - - ifr = (struct ifreq *) p; - if (ifr == 0) - { - debug_printf ("ifr == NULL\n"); - set_errno (EINVAL); - return -1; - } - - res = get_ifconf (&ifc, cmd); - if (res) - { - debug_printf ("error in get_ifconf\n"); - break; - } - - debug_printf (" name: %s\n", ifr->ifr_name); - for (ifrp = ifc.ifc_req; - (caddr_t) ifrp < ifc.ifc_buf + ifc.ifc_len; - ++ifrp) - { - debug_printf ("testname: %s\n", ifrp->ifr_name); - if (! strcmp (ifrp->ifr_name, ifr->ifr_name)) - { - switch (cmd) - { - case SIOCGIFADDR: - ifr->ifr_addr = ifrp->ifr_addr; - break; - case SIOCGIFBRDADDR: - ifr->ifr_broadaddr = ifrp->ifr_broadaddr; - break; - case SIOCGIFNETMASK: - ifr->ifr_netmask = ifrp->ifr_netmask; - break; - case SIOCGIFHWADDR: - ifr->ifr_hwaddr = ifrp->ifr_hwaddr; - break; - case SIOCGIFMETRIC: - ifr->ifr_metric = ifrp->ifr_metric; - break; - case SIOCGIFMTU: - ifr->ifr_mtu = ifrp->ifr_mtu; - break; - } - break; - } - } - if ((caddr_t) ifrp >= ifc.ifc_buf + ifc.ifc_len) - { - set_errno (EINVAL); - return -1; - } - break; - } - case FIOASYNC: - res = WSAAsyncSelect (get_socket (), gethwnd (), WM_ASYNCIO, - *(int *) p ? ASYNC_MASK : 0); - syscall_printf ("Async I/O on socket %s", - *(int *) p ? "started" : "cancelled"); - set_async (*(int *) p); - break; - default: - /* We must cancel WSAAsyncSelect (if any) before setting socket to - * blocking mode - */ - if (cmd == FIONBIO && *(int *) p == 0) - WSAAsyncSelect (get_socket (), gethwnd (), 0, 0); - res = ioctlsocket (get_socket (), cmd, (unsigned long *) p); - if (res == SOCKET_ERROR) - set_winsock_errno (); - if (cmd == FIONBIO) - { - syscall_printf ("socket is now %sblocking", - *(int *) p ? "non" : ""); - /* Start AsyncSelect if async socket unblocked */ - if (*(int *) p && get_async ()) - WSAAsyncSelect (get_socket (), gethwnd (), WM_ASYNCIO, ASYNC_MASK); - - set_nonblocking (*(int *) p); - } - break; - } - syscall_printf ("%d = ioctl_socket (%x, %x)", res, cmd, p); - return res; -} - -int -fhandler_socket::fcntl (int cmd, void *arg) -{ - int res = 0; - int request, current; - - switch (cmd) - { - case F_SETFL: - { - /* Carefully test for the O_NONBLOCK or deprecated OLD_O_NDELAY flag. - Set only the flag that has been passed in. If both are set, just - record O_NONBLOCK. */ - int new_flags = (int) arg & O_NONBLOCK_MASK; - if ((new_flags & OLD_O_NDELAY) && (new_flags & O_NONBLOCK)) - new_flags = O_NONBLOCK; - current = get_flags () & O_NONBLOCK_MASK; - request = new_flags ? 1 : 0; - if (!!current != !!new_flags && (res = ioctl (FIONBIO, &request))) - break; - set_flags ((get_flags () & ~O_NONBLOCK_MASK) | new_flags); - break; - } - default: - res = fhandler_base::fcntl (cmd, arg); - break; - } - return res; -} - -void -fhandler_socket::set_close_on_exec (int val) -{ - if (!winsock2_active) /* < Winsock 2.0 */ - set_inheritance (get_handle (), val); - set_close_on_exec_flag (val); - debug_printf ("set close_on_exec for %s to %d", get_name (), val); -} - -void -fhandler_socket::set_sun_path (const char *path) -{ - if (sun_path) - cfree (sun_path); - sun_path = cstrdup (path); -} |