summaryrefslogtreecommitdiff
path: root/client/violite.c
diff options
context:
space:
mode:
Diffstat (limited to 'client/violite.c')
-rw-r--r--client/violite.c394
1 files changed, 394 insertions, 0 deletions
diff --git a/client/violite.c b/client/violite.c
new file mode 100644
index 00000000000..f32c3c62a48
--- /dev/null
+++ b/client/violite.c
@@ -0,0 +1,394 @@
+/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with this library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ MA 02111-1307, USA */
+
+#include <global.h>
+
+#ifndef HAVE_VIO /* is Vio suppored by the Vio lib ? */
+
+#include <errno.h>
+#include <assert.h>
+#include <violite.h>
+#include <my_sys.h>
+#include <my_net.h>
+#include <m_string.h>
+
+#if defined(__EMX__)
+#include <sys/ioctl.h>
+#define ioctlsocket(A,B,C) ioctl((A),(B),(void *)(C),sizeof(*(C)))
+#undef HAVE_FCNTL
+#endif /* defined(__EMX__) */
+
+#if defined(MSDOS) || defined(__WIN__)
+#ifdef __WIN__
+#undef errno
+#undef EINTR
+#undef EAGAIN
+#define errno WSAGetLastError()
+#define EINTR WSAEINTR
+#define EAGAIN WSAEINPROGRESS
+#endif /* __WIN__ */
+#define O_NONBLOCK 1 /* For emulation of fcntl() */
+#endif
+#ifndef EWOULDBLOCK
+#define EWOULDBLOCK EAGAIN
+#endif
+
+#ifndef __WIN__
+#define HANDLE void *
+#endif
+
+struct st_vio
+{
+ my_socket sd; /* my_socket - real or imaginary */
+ HANDLE hPipe;
+ my_bool localhost; /* Are we from localhost? */
+ int fcntl_mode; /* Buffered fcntl(sd,F_GETFL) */
+ my_bool fcntl_set; /* Have we done any fcntl yet?*/
+ struct sockaddr_in local; /* Local internet address */
+ struct sockaddr_in remote; /* Remote internet address */
+ enum enum_vio_type type; /* Type of connection */
+ char desc[30]; /* String description */
+};
+
+typedef void *vio_ptr;
+typedef char *vio_cstring;
+
+/*
+ * Helper to fill most of the Vio* with defaults.
+ */
+
+static void vio_reset(Vio* vio, enum enum_vio_type type,
+ my_socket sd, HANDLE hPipe,
+ my_bool localhost)
+{
+ bzero((char*) vio, sizeof(*vio));
+ vio->type = type;
+ vio->sd = sd;
+ vio->hPipe = hPipe;
+ vio->localhost= localhost;
+}
+
+Vio *vio_new(my_socket sd, enum enum_vio_type type, my_bool localhost)
+{
+ Vio *vio;
+ DBUG_ENTER("vio_new");
+ DBUG_PRINT("enter", ("sd=%d", sd));
+ if ((vio = (Vio*) my_malloc(sizeof(*vio),MYF(MY_WME))))
+ {
+ vio_reset(vio, type, sd, 0, localhost);
+ sprintf(vio->desc, "socket (%d)", vio->sd);
+ }
+ DBUG_RETURN(vio);
+}
+
+
+#ifdef __WIN__
+
+Vio *vio_new_win32pipe(HANDLE hPipe)
+{
+ Vio *vio;
+ DBUG_ENTER("vio_new_handle");
+ if ((vio = (Vio*) my_malloc(sizeof(Vio),MYF(MY_WME))))
+ {
+ vio_reset(vio, VIO_TYPE_NAMEDPIPE, 0, hPipe, TRUE);
+ strmov(vio->desc, "named pipe");
+ }
+ DBUG_RETURN(vio);
+}
+
+#endif
+
+void vio_delete(Vio * vio)
+{
+ /* It must be safe to delete null pointers. */
+ /* This matches the semantics of C++'s delete operator. */
+ if (vio)
+ {
+ vio_close(vio);
+ my_free((gptr) vio,MYF(0));
+ }
+}
+
+int vio_errno(Vio *vio)
+{
+ return errno; /* On Win32 this mapped to WSAGetLastError() */
+}
+
+
+int vio_read(Vio * vio, gptr buf, int size)
+{
+ int r;
+ DBUG_ENTER("vio_read");
+ DBUG_PRINT("enter", ("sd=%d, buf=%p, size=%d", vio->sd, buf, size));
+ assert(vio->sd >= 0);
+#ifdef __WIN__
+ if (vio->type == VIO_TYPE_NAMEDPIPE)
+ {
+ DWORD length;
+ if (!ReadFile(vio->hPipe, buf, size, &length, NULL))
+ DBUG_RETURN(-1);
+ DBUG_RETURN(length);
+ }
+ r = recv(vio->sd, buf, size,0);
+#else
+ errno=0; /* For linux */
+ r = read(vio->sd, buf, size);
+#endif /* __WIN__ */
+#ifndef DBUG_OFF
+ if (r < 0)
+ {
+ DBUG_PRINT("error", ("Got error %d during read",errno));
+ }
+#endif /* DBUG_OFF */
+ DBUG_PRINT("exit", ("%d", r));
+ DBUG_RETURN(r);
+}
+
+
+int vio_write(Vio * vio, const gptr buf, int size)
+{
+ int r;
+ DBUG_ENTER("vio_write");
+ DBUG_PRINT("enter", ("sd=%d, buf=%p, size=%d", vio->sd, buf, size));
+ assert(vio->sd >= 0);
+#ifdef __WIN__
+ if ( vio->type == VIO_TYPE_NAMEDPIPE)
+ {
+ DWORD length;
+ if (!WriteFile(vio->hPipe, (char*) buf, size, &length, NULL))
+ DBUG_RETURN(-1);
+ DBUG_RETURN(length);
+ }
+ r = send(vio->sd, buf, size,0);
+#else
+ r = write(vio->sd, buf, size);
+#endif /* __WIN__ */
+#ifndef DBUG_OFF
+ if (r < 0)
+ {
+ DBUG_PRINT("error", ("Got error on write: %d",errno));
+ }
+#endif /* DBUG_OFF */
+ DBUG_PRINT("exit", ("%d", r));
+ DBUG_RETURN(r);
+}
+
+
+int vio_blocking(Vio * vio, my_bool set_blocking_mode)
+{
+ int r=0;
+ DBUG_ENTER("vio_blocking");
+ DBUG_PRINT("enter", ("set_blocking_mode: %d", (int) set_blocking_mode));
+
+#if !defined(___WIN__) && !defined(__EMX__)
+#if !defined(NO_FCNTL_NONBLOCK)
+
+ if (vio->sd >= 0)
+ {
+ int old_fcntl=vio->fcntl_mode;
+ if (!vio->fcntl_set)
+ {
+ vio->fcntl_set = TRUE;
+ old_fcntl=vio->fcntl_mode = fcntl(vio->sd, F_GETFL);
+ }
+ if (set_blocking_mode)
+ vio->fcntl_mode &= ~O_NONBLOCK; //clear bit
+ else
+ vio->fcntl_mode |= O_NONBLOCK; //set bit
+ if (old_fcntl != vio->fcntl_mode)
+ r = fcntl(vio->sd, F_SETFL, vio->fcntl_mode);
+ }
+#endif /* !defined(NO_FCNTL_NONBLOCK) */
+#else /* !defined(__WIN__) && !defined(__EMX__) */
+#ifndef __EMX__
+ if (vio->type != VIO_TYPE_NAMEDPIPE)
+#endif
+ {
+ ulong arg;
+ int old_fcntl=vio->fcntl_mode;
+ if (!vio->fcntl_set)
+ {
+ vio->fcntl_set = TRUE;
+ old_fnctl=vio->fcntl_mode=0;
+ }
+ if (set_blocking_mode)
+ {
+ arg = 0;
+ vio->fcntl_mode &= ~O_NONBLOCK; //clear bit
+ }
+ else
+ {
+ arg = 1;
+ vio->fcntl_mode |= O_NONBLOCK; //set bit
+ }
+ if (old_fcntl != vio->fcntl_mode)
+ r = ioctlsocket(vio->sd,FIONBIO,(void*) &arg, sizeof(arg));
+ }
+#endif /* !defined(__WIN__) && !defined(__EMX__) */
+ DBUG_RETURN(r);
+}
+
+my_bool
+vio_is_blocking(Vio * vio)
+{
+ my_bool r;
+ DBUG_ENTER("vio_is_blocking");
+ r = !(vio->fcntl_mode & O_NONBLOCK);
+ DBUG_PRINT("exit", ("%d", (int) r));
+ DBUG_RETURN(r);
+}
+
+
+int vio_fastsend(Vio * vio, my_bool onoff)
+{
+ int r=0;
+ DBUG_ENTER("vio_fastsend");
+ DBUG_PRINT("enter", ("onoff:%d", (int) onoff));
+ assert(vio->sd >= 0);
+
+#ifdef IPTOS_THROUGHPUT
+ {
+#ifndef __EMX__
+ int tos = IPTOS_THROUGHPUT;
+ if (!setsockopt(vio->sd, IPPROTO_IP, IP_TOS, (void *) &tos, sizeof(tos)))
+#endif /* !__EMX__ */
+ {
+ int nodelay = 1;
+ if (setsockopt(vio->sd, IPPROTO_TCP, TCP_NODELAY, (void *) &nodelay,
+ sizeof(nodelay))) {
+ DBUG_PRINT("warning",
+ ("Couldn't set socket option for fast send"));
+ r= -1;
+ }
+ }
+ }
+#endif /* IPTOS_THROUGHPUT */
+ DBUG_PRINT("exit", ("%d", r));
+ DBUG_RETURN(r);
+}
+
+int vio_keepalive(Vio* vio, my_bool set_keep_alive)
+{
+ int r=0;
+ uint opt = 0;
+ DBUG_ENTER("vio_keepalive");
+ DBUG_PRINT("enter", ("sd=%d, set_keep_alive=%d", vio->sd, (int)
+ set_keep_alive));
+ if (vio->type != VIO_TYPE_NAMEDPIPE)
+ {
+ assert(vio->sd >= 0);
+ if (set_keep_alive)
+ opt = 1;
+ r = setsockopt(vio->sd, SOL_SOCKET, SO_KEEPALIVE, (char *) &opt,
+ sizeof(opt));
+ }
+ DBUG_RETURN(r);
+}
+
+
+my_bool
+vio_should_retry(Vio * vio)
+{
+ int en = errno;
+ return en == EAGAIN || en == EINTR || en == EWOULDBLOCK;
+}
+
+
+int vio_close(Vio * vio)
+{
+ int r;
+ DBUG_ENTER("vio_close");
+ assert(vio->sd >= 0); /* Vill also work on PIPE:s */
+#ifdef __WIN__
+ if (vio->type == VIO_TYPE_NAMEDPIPE)
+ {
+#if defined(__NT__) && defined(MYSQL_SERVER)
+ CancelIO(vio->hPipe);
+ DisconnectNamedPipe(vio->hPipe);
+#endif
+ r=CloseHandle(vio->hPipe);
+ }
+ else
+#endif /* __WIN__ */
+ {
+ r=0;
+ if (shutdown(vio->sd,2))
+ r= -1;
+ if (closesocket(vio->sd))
+ r= -1;
+ }
+ if (r)
+ {
+ DBUG_PRINT("error", ("close() failed, error: %d",errno));
+ /* FIXME: error handling (not critical for MySQL) */
+ }
+ vio_reset(vio,VIO_CLOSED,-1,0,TRUE); /* For debugging */
+ DBUG_RETURN(r);
+}
+
+
+const char *vio_description(Vio * vio)
+{
+ return vio->desc;
+}
+
+enum enum_vio_type vio_type(Vio* vio)
+{
+ return vio->type;
+}
+
+my_socket vio_fd(Vio* vio)
+{
+ return vio->sd;
+}
+
+
+my_bool vio_peer_addr(Vio * vio, char *buf)
+{
+ DBUG_ENTER("vio_peer_addr");
+ DBUG_PRINT("enter", ("sd=%d", vio->sd));
+ if (vio->localhost)
+ {
+ strmov(buf,"127.0.0.1");
+ }
+ else
+ {
+ size_socket addrLen = sizeof(struct sockaddr);
+ if (getpeername(vio->sd, (struct sockaddr *) (& (vio->remote)),
+ &addrLen) != 0)
+ {
+ DBUG_PRINT("exit", ("getpeername, error: %d", errno));
+ DBUG_RETURN(1);
+ }
+ my_inet_ntoa(vio->remote.sin_addr,buf);
+ }
+ DBUG_PRINT("exit", ("addr=%s", buf));
+ DBUG_RETURN(0);
+}
+
+
+void vio_in_addr(Vio *vio, struct in_addr *in)
+{
+ DBUG_ENTER("vio_in_addr");
+ if (vio->localhost)
+ bzero((char*) in, sizeof(*in)); /* This should never be executed */
+ else
+ *in=vio->remote.sin_addr;
+ DBUG_VOID_RETURN;
+}
+
+#endif /* HAVE_VIO */
View Lorry Controller Status