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Member "src/Common/libzip/zip_source_win32w.c" (10 Oct 2018, 5331 Bytes) of package /windows/misc/VeraCrypt_1.23-Hotfix-2_Source.zip:


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    1 /*
    2   zip_source_win32w.c -- create data source from Windows file (UTF-16)
    3   Copyright (C) 1999-2017 Dieter Baron and Thomas Klausner
    4 
    5   This file is part of libzip, a library to manipulate ZIP archives.
    6   The authors can be contacted at <libzip@nih.at>
    7 
    8   Redistribution and use in source and binary forms, with or without
    9   modification, are permitted provided that the following conditions
   10   are met:
   11   1. Redistributions of source code must retain the above copyright
   12      notice, this list of conditions and the following disclaimer.
   13   2. Redistributions in binary form must reproduce the above copyright
   14      notice, this list of conditions and the following disclaimer in
   15      the documentation and/or other materials provided with the
   16      distribution.
   17   3. The names of the authors may not be used to endorse or promote
   18      products derived from this software without specific prior
   19      written permission.
   20 
   21   THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
   22   OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   23   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   24   ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
   25   DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   26   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
   27   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   28   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
   29   IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
   30   OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
   31   IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   32 */
   33 
   34 /* 0x0501 => Windows XP; needs to be at least this value because of GetFileSizeEx */
   35 #if !defined(MS_UWP) && !defined(_WIN32_WINNT)
   36 #define _WIN32_WINNT 0x0501
   37 #endif
   38 #include <windows.h>
   39 
   40 #include <stdio.h>
   41 #include <stdlib.h>
   42 
   43 #include "zipint.h"
   44 #include "zipwin32.h"
   45 
   46 static void *_win32_strdup_w(const void *str);
   47 static HANDLE _win32_open_w(_zip_source_win32_read_file_t *ctx);
   48 static HANDLE _win32_create_temp_w(_zip_source_win32_read_file_t *ctx, void **temp, zip_uint32_t value, PSECURITY_ATTRIBUTES sa);
   49 static int _win32_rename_temp_w(_zip_source_win32_read_file_t *ctx);
   50 static int _win32_remove_w(const void *fname);
   51 
   52 // clang-format off
   53 static _zip_source_win32_file_ops_t win32_ops_w = {
   54     _win32_strdup_w,
   55     _win32_open_w,
   56     _win32_create_temp_w,
   57     _win32_rename_temp_w,
   58     _win32_remove_w
   59 };
   60 // clang-format on
   61 
   62 ZIP_EXTERN zip_source_t *
   63 zip_source_win32w(zip_t *za, const wchar_t *fname, zip_uint64_t start, zip_int64_t len) {
   64     if (za == NULL)
   65     return NULL;
   66 
   67     return zip_source_win32w_create(fname, start, len, &za->error);
   68 }
   69 
   70 
   71 ZIP_EXTERN zip_source_t *
   72 zip_source_win32w_create(const wchar_t *fname, zip_uint64_t start, zip_int64_t length, zip_error_t *error) {
   73     if (fname == NULL || length < -1) {
   74     zip_error_set(error, ZIP_ER_INVAL, 0);
   75     return NULL;
   76     }
   77 
   78     return _zip_source_win32_handle_or_name(fname, INVALID_HANDLE_VALUE, start, length, 1, NULL, &win32_ops_w, error);
   79 }
   80 
   81 
   82 static void *
   83 _win32_strdup_w(const void *str) {
   84     return _wcsdup((const wchar_t *)str);
   85 }
   86 
   87 
   88 static HANDLE
   89 _win32_open_w(_zip_source_win32_read_file_t *ctx) {
   90 #ifdef MS_UWP
   91     CREATEFILE2_EXTENDED_PARAMETERS extParams = {0};
   92     extParams.dwFileAttributes = FILE_ATTRIBUTE_NORMAL;
   93     extParams.dwFileFlags = FILE_FLAG_RANDOM_ACCESS;
   94     extParams.dwSecurityQosFlags = SECURITY_ANONYMOUS;
   95     extParams.dwSize = sizeof(extParams);
   96     extParams.hTemplateFile = NULL;
   97     extParams.lpSecurityAttributes = NULL;
   98 
   99     return CreateFile2(ctx->fname, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, OPEN_EXISTING, &extParams);
  100 #else
  101     return CreateFileW(ctx->fname, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
  102 #endif
  103 }
  104 
  105 
  106 static HANDLE
  107 _win32_create_temp_w(_zip_source_win32_read_file_t *ctx, void **temp, zip_uint32_t value, PSECURITY_ATTRIBUTES sa) {
  108     size_t len;
  109 
  110     len = wcslen((const wchar_t *)ctx->fname) + 10;
  111     if (*temp == NULL) {
  112     if ((*temp = malloc(sizeof(wchar_t) * len)) == NULL) {
  113         zip_error_set(&ctx->error, ZIP_ER_MEMORY, 0);
  114         return INVALID_HANDLE_VALUE;
  115     }
  116     }
  117     if (_snwprintf((wchar_t *)*temp, len, L"%s.%08x", (const wchar_t *)ctx->fname, value) != len - 1) {
  118     return INVALID_HANDLE_VALUE;
  119     }
  120 
  121 #ifdef MS_UWP
  122     CREATEFILE2_EXTENDED_PARAMETERS extParams = {0};
  123     extParams.dwFileAttributes = FILE_ATTRIBUTE_NORMAL | FILE_ATTRIBUTE_TEMPORARY;
  124     extParams.dwFileFlags = FILE_FLAG_RANDOM_ACCESS;
  125     extParams.dwSecurityQosFlags = SECURITY_ANONYMOUS;
  126     extParams.dwSize = sizeof(extParams);
  127     extParams.hTemplateFile = NULL;
  128     extParams.lpSecurityAttributes = NULL;
  129 
  130     return CreateFile2((const wchar_t *)*temp, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ, CREATE_NEW, &extParams);
  131 #else
  132     return CreateFileW((const wchar_t *)*temp, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ, sa, CREATE_NEW, FILE_ATTRIBUTE_NORMAL | FILE_ATTRIBUTE_TEMPORARY, NULL);
  133 #endif
  134 }
  135 
  136 
  137 static int
  138 _win32_rename_temp_w(_zip_source_win32_read_file_t *ctx) {
  139     if (!MoveFileExW(ctx->tmpname, ctx->fname, MOVEFILE_REPLACE_EXISTING))
  140     return -1;
  141     return 0;
  142 }
  143 
  144 
  145 static int
  146 _win32_remove_w(const void *fname) {
  147     DeleteFileW((const wchar_t *)fname);
  148     return 0;
  149 }