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1 /* |
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2 zip_source_win32a.c -- create data source from Windows file (ANSI) |
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3 Copyright (C) 1999-2016 Dieter Baron and Thomas Klausner |
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4 |
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5 This file is part of libzip, a library to manipulate ZIP archives. |
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6 The authors can be contacted at <libzip@nih.at> |
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7 |
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8 Redistribution and use in source and binary forms, with or without |
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9 modification, are permitted provided that the following conditions |
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10 are met: |
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11 1. Redistributions of source code must retain the above copyright |
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12 notice, this list of conditions and the following disclaimer. |
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13 2. Redistributions in binary form must reproduce the above copyright |
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14 notice, this list of conditions and the following disclaimer in |
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15 the documentation and/or other materials provided with the |
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16 distribution. |
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17 3. The names of the authors may not be used to endorse or promote |
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18 products derived from this software without specific prior |
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19 written permission. |
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20 |
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21 THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS |
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22 OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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23 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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24 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY |
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25 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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26 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE |
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27 GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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28 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER |
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29 IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
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30 OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
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31 IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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32 */ |
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33 |
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34 |
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35 #include <stdio.h> |
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36 |
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37 #include "zipint.h" |
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38 #include "zipwin32.h" |
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39 |
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40 static void * _win32_strdup_a(const void *str); |
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41 static HANDLE _win32_open_a(_zip_source_win32_read_file_t *ctx); |
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42 static HANDLE _win32_create_temp_a(_zip_source_win32_read_file_t *ctx, void **temp, zip_uint32_t value, PSECURITY_ATTRIBUTES sa); |
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43 static int _win32_rename_temp_a(_zip_source_win32_read_file_t *ctx); |
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44 static int _win32_remove_a(const void *fname); |
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45 |
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46 static _zip_source_win32_file_ops_t win32_ops_a = { |
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47 _win32_strdup_a, |
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48 _win32_open_a, |
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49 _win32_create_temp_a, |
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50 _win32_rename_temp_a, |
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51 _win32_remove_a |
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52 }; |
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53 |
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54 ZIP_EXTERN zip_source_t * |
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55 zip_source_win32a(zip_t *za, const char *fname, zip_uint64_t start, zip_int64_t len) |
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56 { |
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57 if (za == NULL) |
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58 return NULL; |
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59 |
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60 return zip_source_win32a_create(fname, start, len, &za->error); |
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61 } |
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62 |
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63 |
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64 ZIP_EXTERN zip_source_t * |
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65 zip_source_win32a_create(const char *fname, zip_uint64_t start, zip_int64_t length, zip_error_t *error) |
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66 { |
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67 if (fname == NULL || length < -1) { |
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68 zip_error_set(error, ZIP_ER_INVAL, 0); |
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69 return NULL; |
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70 } |
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71 |
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72 return _zip_source_win32_handle_or_name(fname, INVALID_HANDLE_VALUE, start, length, 1, NULL, &win32_ops_a, error); |
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73 } |
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74 |
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75 |
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76 static void * |
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77 _win32_strdup_a(const void *str) |
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78 { |
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79 return strdup((const char *)str); |
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80 } |
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81 |
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82 |
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83 static HANDLE |
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84 _win32_open_a(_zip_source_win32_read_file_t *ctx) |
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85 { |
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86 return CreateFileA(ctx->fname, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
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87 } |
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88 |
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89 |
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90 static HANDLE |
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91 _win32_create_temp_a(_zip_source_win32_read_file_t *ctx, void **temp, zip_uint32_t value, PSECURITY_ATTRIBUTES sa) |
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92 { |
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93 int len; |
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94 |
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95 len = strlen((const char *)ctx->fname) + 10; |
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96 if (*temp == NULL) { |
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97 if ((*temp = malloc(sizeof(char) * len)) == NULL) { |
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98 zip_error_set(&ctx->error, ZIP_ER_MEMORY, 0); |
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99 return INVALID_HANDLE_VALUE; |
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100 } |
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101 } |
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102 if (sprintf((char *)*temp, "%s.%08x", (const char *)ctx->fname, value) != len - 1) { |
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103 return INVALID_HANDLE_VALUE; |
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104 } |
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105 |
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106 return CreateFileA((const char *)*temp, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ, sa, CREATE_NEW, FILE_ATTRIBUTE_NORMAL | FILE_ATTRIBUTE_TEMPORARY, NULL); |
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107 } |
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108 |
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109 |
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110 static int |
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111 _win32_rename_temp_a(_zip_source_win32_read_file_t *ctx) |
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112 { |
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113 if (!MoveFileExA(ctx->tmpname, ctx->fname, MOVEFILE_REPLACE_EXISTING)) |
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114 return -1; |
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115 return 0; |
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116 } |
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117 |
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118 |
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119 static int |
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120 _win32_remove_a(const void *fname) |
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121 { |
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122 DeleteFileA((const char *)fname); |
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123 return 0; |
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124 } |
