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/*
* Copyright (C) 2009 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "modules/webdatabase/sqlite/SQLiteFileSystem.h"
#include <windows.h>
#include <sqlite3.h>
#include "public/platform/Platform.h"
// Defined in Chromium's codebase in third_party/sqlite/src/os_win.c
extern "C" {
int chromium_sqlite3_initialize_win_sqlite3_file(sqlite3_file* file, HANDLE handle);
}
namespace blink {
// Chromium's Windows implementation of SQLite VFS
namespace {
// Opens a file.
//
// vfs - pointer to the sqlite3_vfs object.
// fileName - the name of the file.
// id - the structure that will manipulate the newly opened file.
// desiredFlags - the desired open mode flags.
// usedFlags - the actual open mode flags that were used.
int chromiumOpen(sqlite3_vfs*, const char* fileName,
sqlite3_file* id, int desiredFlags, int* usedFlags)
{
HANDLE h = Platform::current()->databaseOpenFile(String(fileName), desiredFlags);
if (h == INVALID_HANDLE_VALUE) {
if (desiredFlags & SQLITE_OPEN_READWRITE) {
int newFlags = (desiredFlags | SQLITE_OPEN_READONLY) & ~SQLITE_OPEN_READWRITE;
return chromiumOpen(0, fileName, id, newFlags, usedFlags);
} else
return SQLITE_CANTOPEN;
}
if (usedFlags) {
if (desiredFlags & SQLITE_OPEN_READWRITE)
*usedFlags = SQLITE_OPEN_READWRITE;
else
*usedFlags = SQLITE_OPEN_READONLY;
}
chromium_sqlite3_initialize_win_sqlite3_file(id, h);
return SQLITE_OK;
}
// Deletes the given file.
//
// vfs - pointer to the sqlite3_vfs object.
// fileName - the name of the file.
// syncDir - determines if the directory to which this file belongs
// should be synched after the file is deleted.
int chromiumDelete(sqlite3_vfs*, const char* fileName, int)
{
return Platform::current()->databaseDeleteFile(String(fileName), false);
}
// Check the existance and status of the given file.
//
// vfs - pointer to the sqlite3_vfs object.
// fileName - the name of the file.
// flag - the type of test to make on this file.
// res - the result.
int chromiumAccess(sqlite3_vfs*, const char* fileName, int flag, int* res)
{
DWORD attr = Platform::current()->databaseGetFileAttributes(String(fileName));
switch (flag) {
case SQLITE_ACCESS_READ:
case SQLITE_ACCESS_EXISTS:
*res = (attr != INVALID_FILE_ATTRIBUTES);
break;
case SQLITE_ACCESS_READWRITE:
*res = ((attr & FILE_ATTRIBUTE_READONLY) == 0);
break;
default:
return SQLITE_ERROR;
}
return SQLITE_OK;
}
// Turns a relative pathname into a full pathname.
//
// vfs - pointer to the sqlite3_vfs object.
// relativePath - the relative path.
// bufSize - the size of the output buffer in bytes.
// absolutePath - the output buffer where the absolute path will be stored.
int chromiumFullPathname(sqlite3_vfs* vfs, const char* relativePath,
int, char* absolutePath)
{
// The renderer process doesn't need to know the absolute path of the file
sqlite3_snprintf(vfs->mxPathname, absolutePath, "%s", relativePath);
return SQLITE_OK;
}
#ifndef SQLITE_OMIT_LOAD_EXTENSION
// Returns NULL, thus disallowing loading libraries in the renderer process.
//
// vfs - pointer to the sqlite3_vfs object.
// fileName - the name of the shared library file.
void* chromiumDlOpen(sqlite3_vfs*, const char*)
{
return 0;
}
#else
#define chromiumDlOpen 0
#endif // SQLITE_OMIT_LOAD_EXTENSION
} // namespace
void SQLiteFileSystem::registerSQLiteVFS()
{
sqlite3_vfs* win32_vfs = sqlite3_vfs_find("win32");
static sqlite3_vfs chromium_vfs = {
1,
win32_vfs->szOsFile,
win32_vfs->mxPathname,
0,
"chromium_vfs",
win32_vfs->pAppData,
chromiumOpen,
chromiumDelete,
chromiumAccess,
chromiumFullPathname,
chromiumDlOpen,
win32_vfs->xDlError,
win32_vfs->xDlSym,
win32_vfs->xDlClose,
win32_vfs->xRandomness,
win32_vfs->xSleep,
win32_vfs->xCurrentTime,
win32_vfs->xGetLastError
};
sqlite3_vfs_register(&chromium_vfs, 0);
}
} // namespace blink