Adding upstream version 1:10.11.6.upstream/1%10.11.6upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 359 insertions, 0 deletions

diff --git a/libmariadb/plugins/pvio/pvio_npipe.c b/libmariadb/plugins/pvio/pvio_npipe.c
new file mode 100644
index 00000000..17c59cef
--- /dev/null
+++ b/libmariadb/plugins/pvio/pvio_npipe.c
@@ -0,0 +1,359 @@
+/************************************************************************************
+    Copyright (C) 2015 Georg Richter and MariaDB Corporation 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 see <http://www.gnu.org/licenses>
+   or write to the Free Software Foundation, Inc., 
+   51 Franklin St., Fifth Floor, Boston, MA 02110, USA
+
+*************************************************************************************/
+
+/* MariaDB virtual IO plugin for Windows named pipe communication */
+
+#ifdef _WIN32
+
+#include <ma_global.h>
+#include <ma_sys.h>
+#include <errmsg.h>
+#include <mysql.h>
+#include <mysql/client_plugin.h>
+#include <string.h>
+#include <ma_string.h>
+
+/* Function prototypes */
+my_bool pvio_npipe_set_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type, int timeout);
+int pvio_npipe_get_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type);
+ssize_t pvio_npipe_read(MARIADB_PVIO *pvio, uchar *buffer, size_t length);
+ssize_t pvio_npipe_write(MARIADB_PVIO *pvio, const uchar *buffer, size_t length);
+
+my_bool pvio_npipe_connect(MARIADB_PVIO *pvio, MA_PVIO_CINFO *cinfo);
+my_bool pvio_npipe_close(MARIADB_PVIO *pvio);
+int pvio_npipe_fast_send(MARIADB_PVIO *pvio);
+int pvio_npipe_keepalive(MARIADB_PVIO *pvio);
+my_bool pvio_npipe_get_handle(MARIADB_PVIO *pvio, void *handle);
+my_bool pvio_npipe_is_blocking(MARIADB_PVIO *pvio);
+int pvio_npipe_shutdown(MARIADB_PVIO *pvio);
+my_bool pvio_npipe_is_alive(MARIADB_PVIO *pvio);
+
+struct st_ma_pvio_methods pvio_npipe_methods= {
+  pvio_npipe_set_timeout,
+  pvio_npipe_get_timeout,
+  pvio_npipe_read,
+  NULL,
+  pvio_npipe_write,
+  NULL,
+  NULL,
+  NULL,
+  pvio_npipe_connect,
+  pvio_npipe_close,
+  pvio_npipe_fast_send,
+  pvio_npipe_keepalive,
+  pvio_npipe_get_handle,
+  pvio_npipe_is_blocking,
+  pvio_npipe_is_alive,
+  NULL,
+  pvio_npipe_shutdown
+};
+
+#ifndef PLUGIN_DYNAMIC
+MARIADB_PVIO_PLUGIN pvio_npipe_client_plugin =
+#else
+MARIADB_PVIO_PLUGIN _mysql_client_plugin_declaration_ =
+#endif
+{
+  MARIADB_CLIENT_PVIO_PLUGIN,
+  MARIADB_CLIENT_PVIO_PLUGIN_INTERFACE_VERSION,
+  "pvio_npipe",
+  "Georg Richter",
+  "MariaDB virtual IO plugin for named pipe connection",
+  {1, 0, 0},
+  "LGPL",
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  &pvio_npipe_methods
+};
+
+struct st_pvio_npipe {
+  HANDLE pipe;
+  OVERLAPPED overlapped;
+  MYSQL *mysql;
+};
+
+my_bool pvio_npipe_set_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type, int timeout)
+{
+  int timeout_ms;
+
+  if (!pvio)
+    return 1;
+  if (timeout > INT_MAX/1000)
+    timeout_ms= -1;
+  else if (timeout <=0)
+    timeout_ms= -1;
+  else
+    timeout_ms = timeout*1000;
+
+  pvio->timeout[type]= timeout_ms;
+  return 0;
+}
+
+int pvio_npipe_get_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type)
+{
+  if (!pvio)
+    return -1;
+  return pvio->timeout[type] / 1000;
+}
+
+static BOOL complete_io(HANDLE file, OVERLAPPED *ov, BOOL ret, DWORD timeout, DWORD *size)
+{
+  if (ret)
+    timeout = 0; /* IO completed successfully, do not WaitForSingleObject */
+  else
+  {
+    assert(timeout);
+    if (GetLastError() != ERROR_IO_PENDING)
+      return FALSE;
+  }
+
+  if (timeout)
+  {
+    HANDLE wait_handle= ov->hEvent;
+    assert(wait_handle && (wait_handle != INVALID_HANDLE_VALUE));
+
+    DWORD wait_ret= WaitForSingleObject(wait_handle, timeout);
+    switch (wait_ret)
+    {
+      case WAIT_OBJECT_0:
+        break;
+      case WAIT_TIMEOUT:
+        CancelIoEx(file, ov);
+        SetLastError(ERROR_TIMEOUT);
+        return FALSE;
+      default:
+        /* WAIT_ABANDONED or WAIT_FAILED unexpected. */
+        assert(0);
+        return FALSE;
+    }
+  }
+
+  return GetOverlappedResult(file, ov, size, FALSE);
+}
+
+ssize_t pvio_npipe_read(MARIADB_PVIO *pvio, uchar *buffer, size_t length)
+{
+  BOOL ret;
+  ssize_t r= -1;
+  struct st_pvio_npipe *cpipe= NULL;
+  DWORD size;
+
+  if (!pvio || !pvio->data)
+    return -1;
+
+  cpipe= (struct st_pvio_npipe *)pvio->data;
+
+  ret= ReadFile(cpipe->pipe, buffer, (DWORD)length, NULL, &cpipe->overlapped);
+  ret= complete_io(cpipe->pipe, &cpipe->overlapped, ret, pvio->timeout[PVIO_READ_TIMEOUT], &size);
+  r= ret? (ssize_t) size:-1;
+
+  return r;
+}
+
+ssize_t pvio_npipe_write(MARIADB_PVIO *pvio, const uchar *buffer, size_t length)
+{
+  ssize_t r= -1;
+  struct st_pvio_npipe *cpipe= NULL;
+  BOOL ret;
+  DWORD size;
+
+  if (!pvio || !pvio->data)
+    return -1;
+
+  cpipe= (struct st_pvio_npipe *)pvio->data;
+
+  ret= WriteFile(cpipe->pipe, buffer, (DWORD)length, NULL , &cpipe->overlapped);
+  ret= complete_io(cpipe->pipe, &cpipe->overlapped, ret, pvio->timeout[PVIO_WRITE_TIMEOUT], &size);
+  r= ret ? (ssize_t)size : -1;
+  return r;
+}
+
+
+int pvio_npipe_keepalive(MARIADB_PVIO *pvio)
+{
+  /* keep alive is used for TCP/IP connections only */
+  return 0;
+}
+
+int pvio_npipe_fast_send(MARIADB_PVIO *pvio)
+{
+  /* not supported */
+  return 0;
+}
+my_bool pvio_npipe_connect(MARIADB_PVIO *pvio, MA_PVIO_CINFO *cinfo)
+{
+  struct st_pvio_npipe *cpipe= NULL;
+
+  if (!pvio || !cinfo)
+    return 1;
+
+  /* if connect timeout is set, we will overwrite read/write timeout */
+  if (pvio->timeout[PVIO_CONNECT_TIMEOUT])
+  {
+    pvio->timeout[PVIO_READ_TIMEOUT]= pvio->timeout[PVIO_WRITE_TIMEOUT]= pvio->timeout[PVIO_CONNECT_TIMEOUT];
+  }
+
+  if (!(cpipe= (struct st_pvio_npipe *)LocalAlloc(LMEM_ZEROINIT, sizeof(struct st_pvio_npipe))))
+  {
+    PVIO_SET_ERROR(cinfo->mysql, CR_OUT_OF_MEMORY, "HY000", 0, "");
+    return 1;
+  }
+  pvio->data= (void *)cpipe;
+  cpipe->pipe= INVALID_HANDLE_VALUE;
+  pvio->mysql= cinfo->mysql;
+  pvio->type= cinfo->type;
+
+  if (cinfo->type == PVIO_TYPE_NAMEDPIPE)
+  {
+    char szPipeName[MAX_PATH];
+    ULONGLONG deadline;
+    LONGLONG wait_ms;
+    DWORD backoff= 0; /* Avoid busy wait if ERROR_PIPE_BUSY.*/
+    if ( ! cinfo->unix_socket || (cinfo->unix_socket)[0] == 0x00)
+      cinfo->unix_socket = MARIADB_NAMEDPIPE;
+    if (!cinfo->host || !strcmp(cinfo->host,LOCAL_HOST))
+      cinfo->host=LOCAL_HOST_NAMEDPIPE;
+
+    szPipeName[MAX_PATH - 1]= 0;
+    snprintf(szPipeName, MAX_PATH - 1, "\\\\%s\\pipe\\%s", cinfo->host, cinfo->unix_socket);
+
+    if (pvio->timeout[PVIO_CONNECT_TIMEOUT] > 0)
+      deadline = GetTickCount64() + pvio->timeout[PVIO_CONNECT_TIMEOUT];
+    else
+      deadline = INFINITE;
+
+    while (1)
+    {
+      if ((cpipe->pipe = CreateFile(szPipeName,
+                                    GENERIC_READ |
+                                    GENERIC_WRITE,
+                                    0,               /* no sharing */
+                                    NULL,            /* default security attributes */
+                                    OPEN_EXISTING,
+                                    FILE_FLAG_OVERLAPPED,
+                                    NULL)) != INVALID_HANDLE_VALUE)
+        break;
+
+      if (GetLastError() != ERROR_PIPE_BUSY)
+      {
+        pvio->set_error(pvio->mysql, CR_NAMEDPIPEOPEN_ERROR, "HY000", 0,
+                       cinfo->host, cinfo->unix_socket, GetLastError());
+        goto end;
+      }
+
+      Sleep(backoff);
+      if (!backoff)
+        backoff = 1;
+
+      wait_ms = deadline - GetTickCount64();
+      if (wait_ms > INFINITE)
+        wait_ms = INFINITE;
+
+      if ((wait_ms <= 0) || !WaitNamedPipe(szPipeName, (DWORD)wait_ms))
+      {
+        pvio->set_error(pvio->mysql, CR_NAMEDPIPEWAIT_ERROR, "HY000", 0,
+                       cinfo->host, cinfo->unix_socket, ERROR_TIMEOUT);
+        goto end;
+      }
+    }
+
+
+    if (!(cpipe->overlapped.hEvent= CreateEvent(NULL, FALSE, FALSE, NULL)))
+    {
+      pvio->set_error(pvio->mysql, CR_EVENT_CREATE_FAILED, "HY000", 0,
+                     GetLastError());
+      goto end;
+    }
+    return 0;
+  }
+end:
+  if (cpipe)
+  {
+    if (cpipe->pipe != INVALID_HANDLE_VALUE)
+      CloseHandle(cpipe->pipe);
+    LocalFree(cpipe);
+    pvio->data= NULL;
+  }
+  return 1;
+}
+
+my_bool pvio_npipe_close(MARIADB_PVIO *pvio)
+{
+  struct st_pvio_npipe *cpipe= NULL;
+  int r= 0;
+
+  if (!pvio)
+    return 1;
+
+  if (pvio->data)
+  {
+    cpipe= (struct st_pvio_npipe *)pvio->data;
+    CloseHandle(cpipe->overlapped.hEvent);
+    if (cpipe->pipe != INVALID_HANDLE_VALUE)
+    {
+      CloseHandle(cpipe->pipe);
+      cpipe->pipe= INVALID_HANDLE_VALUE;
+    }
+    LocalFree(pvio->data);
+    pvio->data= NULL;
+  }
+  return r;
+}
+
+my_bool pvio_npipe_get_handle(MARIADB_PVIO *pvio, void *handle)
+{
+  if (pvio && pvio->data)
+  {
+    *(HANDLE *)handle= ((struct st_pvio_npipe *)pvio->data)->pipe;
+    return 0;
+  }
+  return 1;
+} 
+
+my_bool pvio_npipe_is_blocking(MARIADB_PVIO *pvio)
+{
+  return 1;
+}
+
+int pvio_npipe_shutdown(MARIADB_PVIO *pvio)
+{
+  HANDLE h;
+  if (pvio_npipe_get_handle(pvio, &h) == 0)
+  {
+    return(CancelIoEx(h, NULL) ? 0 : 1);
+  }
+  return 1;
+}
+
+my_bool pvio_npipe_is_alive(MARIADB_PVIO *pvio)
+{
+  HANDLE handle;
+  if (!pvio || !pvio->data)
+    return FALSE;
+
+  handle= ((struct st_pvio_npipe *)pvio->data)->pipe;
+  /* Copy data from named pipe without removing it */
+  if (PeekNamedPipe(handle, NULL, 0, NULL, NULL, NULL))
+    return TRUE;
+  return test(GetLastError() != ERROR_BROKEN_PIPE);
+}
+#endif