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125 lines
3.9 KiB
C
125 lines
3.9 KiB
C
/*
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zip_source_win32w.c -- create data source from Windows file (UTF-16)
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Copyright (C) 1999-2016 Dieter Baron and Thomas Klausner
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This file is part of libzip, a library to manipulate ZIP archives.
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The authors can be contacted at <libzip@nih.at>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. The names of the authors may not be used to endorse or promote
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products derived from this software without specific prior
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written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
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OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include "zipint.h"
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#include "zipwin32.h"
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static void * _win32_strdup_w(const void *str);
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static HANDLE _win32_open_w(_zip_source_win32_read_file_t *ctx);
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static HANDLE _win32_create_temp_w(_zip_source_win32_read_file_t *ctx, void **temp, zip_uint32_t value, PSECURITY_ATTRIBUTES sa);
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static int _win32_rename_temp_w(_zip_source_win32_read_file_t *ctx);
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static int _win32_remove_w(const void *fname);
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static _zip_source_win32_file_ops_t win32_ops_w = {
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_win32_strdup_w,
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_win32_open_w,
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_win32_create_temp_w,
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_win32_rename_temp_w,
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_win32_remove_w
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};
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ZIP_EXTERN zip_source_t *
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zip_source_win32w(zip_t *za, const wchar_t *fname, zip_uint64_t start, zip_int64_t len)
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{
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if (za == NULL)
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return NULL;
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return zip_source_win32w_create(fname, start, len, &za->error);
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}
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ZIP_EXTERN zip_source_t *
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zip_source_win32w_create(const wchar_t *fname, zip_uint64_t start, zip_int64_t length, zip_error_t *error)
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{
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if (fname == NULL || length < -1) {
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zip_error_set(error, ZIP_ER_INVAL, 0);
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return NULL;
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}
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return _zip_source_win32_handle_or_name(fname, INVALID_HANDLE_VALUE, start, length, 1, NULL, &win32_ops_w, error);
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}
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static void *
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_win32_strdup_w(const void *str)
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{
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return _wcsdup((const wchar_t *)str);
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}
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static HANDLE
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_win32_open_w(_zip_source_win32_read_file_t *ctx)
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{
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return CreateFileW(ctx->fname, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
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}
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static HANDLE
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_win32_create_temp_w(_zip_source_win32_read_file_t *ctx, void **temp, zip_uint32_t value, PSECURITY_ATTRIBUTES sa)
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{
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int len;
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len = wcslen((const wchar_t *)ctx->fname) + 10;
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if (*temp == NULL) {
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if ((*temp = malloc(sizeof(wchar_t) * len)) == NULL) {
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zip_error_set(&ctx->error, ZIP_ER_MEMORY, 0);
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return INVALID_HANDLE_VALUE;
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}
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}
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if (_snwprintf((wchar_t *)*temp, len, L"%s.%08x", (const wchar_t *)ctx->fname, value) != len - 1) {
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return INVALID_HANDLE_VALUE;
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}
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return CreateFileW((const wchar_t *)*temp, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ, sa, CREATE_NEW, FILE_ATTRIBUTE_NORMAL | FILE_ATTRIBUTE_TEMPORARY, NULL);
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}
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static int
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_win32_rename_temp_w(_zip_source_win32_read_file_t *ctx)
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{
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if (!MoveFileExW(ctx->tmpname, ctx->fname, MOVEFILE_REPLACE_EXISTING))
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return -1;
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return 0;
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}
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static int
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_win32_remove_w(const void *fname)
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{
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DeleteFileW((const wchar_t *)fname);
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return 0;
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}
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