Mercurial > hg
annotate mercurial/win32.py @ 51413:8fc92193a2cf
phases: use a more generic way to trigger a phases computation for perf
Querying the tip most revision will require the cache to warm the same as
calling the dedicated method. This avoid using a method that is mostly meant for
internal use and will be renamed in a coming changesets.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Thu, 22 Feb 2024 10:56:05 +0100 |
parents | a9faacdc5943 |
children | 493034cc3265 |
rev | line source |
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1 # win32.py - utility functions that use win32 API |
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2 # |
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3 # Copyright 2005-2009 Olivia Mackall <olivia@selenic.com> and others |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 |
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9 import ctypes |
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10 import ctypes.wintypes as wintypes |
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11 import errno |
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12 import msvcrt |
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13 import os |
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14 import random |
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15 import subprocess |
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16 |
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17 from typing import ( |
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18 List, |
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19 NoReturn, |
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20 Optional, |
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21 Tuple, |
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22 ) |
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23 |
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24 from . import ( |
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25 encoding, |
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26 pycompat, |
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27 ) |
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28 |
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29 # pytype: disable=module-attr |
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30 _kernel32 = ctypes.windll.kernel32 |
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31 _advapi32 = ctypes.windll.advapi32 |
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32 _user32 = ctypes.windll.user32 |
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33 _crypt32 = ctypes.windll.crypt32 |
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34 # pytype: enable=module-attr |
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35 |
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36 _BOOL = ctypes.c_long |
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37 _WORD = ctypes.c_ushort |
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38 _DWORD = ctypes.c_ulong |
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39 _UINT = ctypes.c_uint |
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40 _LONG = ctypes.c_long |
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41 _LPCSTR = _LPSTR = ctypes.c_char_p |
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42 _HANDLE = ctypes.c_void_p |
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43 _HWND = _HANDLE |
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44 _PCCERT_CONTEXT = ctypes.c_void_p |
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45 _MAX_PATH = wintypes.MAX_PATH |
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46 |
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47 _INVALID_HANDLE_VALUE = _HANDLE(-1).value |
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48 |
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49 # GetLastError |
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50 _ERROR_SUCCESS = 0 |
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51 _ERROR_NO_MORE_FILES = 18 |
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52 _ERROR_INVALID_PARAMETER = 87 |
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53 _ERROR_BROKEN_PIPE = 109 |
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54 _ERROR_INSUFFICIENT_BUFFER = 122 |
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55 _ERROR_NO_DATA = 232 |
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56 |
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57 # WPARAM is defined as UINT_PTR (unsigned type) |
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58 # LPARAM is defined as LONG_PTR (signed type) |
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59 if ctypes.sizeof(ctypes.c_long) == ctypes.sizeof(ctypes.c_void_p): |
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60 _WPARAM = ctypes.c_ulong |
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61 _LPARAM = ctypes.c_long |
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62 elif ctypes.sizeof(ctypes.c_longlong) == ctypes.sizeof(ctypes.c_void_p): |
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63 _WPARAM = ctypes.c_ulonglong |
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64 _LPARAM = ctypes.c_longlong |
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65 |
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66 |
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67 class _FILETIME(ctypes.Structure): |
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68 _fields_ = [('dwLowDateTime', _DWORD), ('dwHighDateTime', _DWORD)] |
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69 |
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70 |
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71 class _BY_HANDLE_FILE_INFORMATION(ctypes.Structure): |
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72 _fields_ = [ |
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73 ('dwFileAttributes', _DWORD), |
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74 ('ftCreationTime', _FILETIME), |
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75 ('ftLastAccessTime', _FILETIME), |
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76 ('ftLastWriteTime', _FILETIME), |
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77 ('dwVolumeSerialNumber', _DWORD), |
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78 ('nFileSizeHigh', _DWORD), |
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79 ('nFileSizeLow', _DWORD), |
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80 ('nNumberOfLinks', _DWORD), |
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81 ('nFileIndexHigh', _DWORD), |
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82 ('nFileIndexLow', _DWORD), |
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83 ] |
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84 |
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85 |
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86 # CreateFile |
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87 _FILE_SHARE_READ = 0x00000001 |
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88 _FILE_SHARE_WRITE = 0x00000002 |
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89 _FILE_SHARE_DELETE = 0x00000004 |
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90 |
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91 _OPEN_EXISTING = 3 |
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92 |
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93 _FILE_FLAG_BACKUP_SEMANTICS = 0x02000000 |
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94 |
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95 # SetFileAttributes |
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96 _FILE_ATTRIBUTE_NORMAL = 0x80 |
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97 _FILE_ATTRIBUTE_NOT_CONTENT_INDEXED = 0x2000 |
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98 |
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99 # Process Security and Access Rights |
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100 _PROCESS_QUERY_INFORMATION = 0x0400 |
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101 |
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102 # GetExitCodeProcess |
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103 _STILL_ACTIVE = 259 |
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104 |
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105 |
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106 class _STARTUPINFO(ctypes.Structure): |
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107 _fields_ = [ |
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108 ('cb', _DWORD), |
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109 ('lpReserved', _LPSTR), |
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110 ('lpDesktop', _LPSTR), |
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111 ('lpTitle', _LPSTR), |
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112 ('dwX', _DWORD), |
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113 ('dwY', _DWORD), |
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114 ('dwXSize', _DWORD), |
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115 ('dwYSize', _DWORD), |
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116 ('dwXCountChars', _DWORD), |
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117 ('dwYCountChars', _DWORD), |
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118 ('dwFillAttribute', _DWORD), |
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119 ('dwFlags', _DWORD), |
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120 ('wShowWindow', _WORD), |
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121 ('cbReserved2', _WORD), |
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122 ('lpReserved2', ctypes.c_char_p), |
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123 ('hStdInput', _HANDLE), |
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124 ('hStdOutput', _HANDLE), |
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125 ('hStdError', _HANDLE), |
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126 ] |
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127 |
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128 |
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129 class _PROCESS_INFORMATION(ctypes.Structure): |
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130 _fields_ = [ |
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131 ('hProcess', _HANDLE), |
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132 ('hThread', _HANDLE), |
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133 ('dwProcessId', _DWORD), |
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134 ('dwThreadId', _DWORD), |
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135 ] |
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136 |
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137 |
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138 _CREATE_NO_WINDOW = 0x08000000 |
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139 _SW_HIDE = 0 |
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140 |
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141 |
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142 class _COORD(ctypes.Structure): |
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143 _fields_ = [('X', ctypes.c_short), ('Y', ctypes.c_short)] |
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144 |
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145 |
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146 class _SMALL_RECT(ctypes.Structure): |
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147 _fields_ = [ |
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148 ('Left', ctypes.c_short), |
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149 ('Top', ctypes.c_short), |
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150 ('Right', ctypes.c_short), |
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151 ('Bottom', ctypes.c_short), |
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152 ] |
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153 |
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154 |
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155 class _CONSOLE_SCREEN_BUFFER_INFO(ctypes.Structure): |
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156 _fields_ = [ |
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157 ('dwSize', _COORD), |
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158 ('dwCursorPosition', _COORD), |
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159 ('wAttributes', _WORD), |
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160 ('srWindow', _SMALL_RECT), |
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161 ('dwMaximumWindowSize', _COORD), |
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162 ] |
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163 |
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164 |
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165 _STD_OUTPUT_HANDLE = _DWORD(-11).value |
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166 _STD_ERROR_HANDLE = _DWORD(-12).value |
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167 |
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168 # CERT_TRUST_STATUS dwErrorStatus |
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169 CERT_TRUST_IS_PARTIAL_CHAIN = 0x10000 |
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170 |
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171 # CertCreateCertificateContext encodings |
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172 X509_ASN_ENCODING = 0x00000001 |
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173 PKCS_7_ASN_ENCODING = 0x00010000 |
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174 |
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175 # These structs are only complete enough to achieve what we need. |
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176 class CERT_CHAIN_CONTEXT(ctypes.Structure): |
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177 _fields_ = ( |
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178 ("cbSize", _DWORD), |
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179 # CERT_TRUST_STATUS struct |
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180 ("dwErrorStatus", _DWORD), |
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181 ("dwInfoStatus", _DWORD), |
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182 ("cChain", _DWORD), |
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183 ("rgpChain", ctypes.c_void_p), |
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184 ("cLowerQualityChainContext", _DWORD), |
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185 ("rgpLowerQualityChainContext", ctypes.c_void_p), |
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186 ("fHasRevocationFreshnessTime", _BOOL), |
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187 ("dwRevocationFreshnessTime", _DWORD), |
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188 ) |
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189 |
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190 |
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191 class CERT_USAGE_MATCH(ctypes.Structure): |
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192 _fields_ = ( |
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193 ("dwType", _DWORD), |
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194 # CERT_ENHKEY_USAGE struct |
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195 ("cUsageIdentifier", _DWORD), |
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196 ("rgpszUsageIdentifier", ctypes.c_void_p), # LPSTR * |
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197 ) |
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198 |
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199 |
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200 class CERT_CHAIN_PARA(ctypes.Structure): |
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201 _fields_ = ( |
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202 ("cbSize", _DWORD), |
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203 ("RequestedUsage", CERT_USAGE_MATCH), |
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204 ("RequestedIssuancePolicy", CERT_USAGE_MATCH), |
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205 ("dwUrlRetrievalTimeout", _DWORD), |
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206 ("fCheckRevocationFreshnessTime", _BOOL), |
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207 ("dwRevocationFreshnessTime", _DWORD), |
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208 ("pftCacheResync", ctypes.c_void_p), # LPFILETIME |
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209 ("pStrongSignPara", ctypes.c_void_p), # PCCERT_STRONG_SIGN_PARA |
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210 ("dwStrongSignFlags", _DWORD), |
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211 ) |
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212 |
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213 |
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214 # types of parameters of C functions used (required by pypy) |
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215 |
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216 _crypt32.CertCreateCertificateContext.argtypes = [ |
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217 _DWORD, # cert encoding |
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218 ctypes.c_char_p, # cert |
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219 _DWORD, |
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220 ] # cert size |
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221 _crypt32.CertCreateCertificateContext.restype = _PCCERT_CONTEXT |
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222 |
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223 _crypt32.CertGetCertificateChain.argtypes = [ |
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224 ctypes.c_void_p, # HCERTCHAINENGINE |
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225 _PCCERT_CONTEXT, |
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226 ctypes.c_void_p, # LPFILETIME |
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227 ctypes.c_void_p, # HCERTSTORE |
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228 ctypes.c_void_p, # PCERT_CHAIN_PARA |
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229 _DWORD, |
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230 ctypes.c_void_p, # LPVOID |
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231 ctypes.c_void_p, # PCCERT_CHAIN_CONTEXT * |
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232 ] |
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233 _crypt32.CertGetCertificateChain.restype = _BOOL |
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234 |
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235 _crypt32.CertFreeCertificateContext.argtypes = [_PCCERT_CONTEXT] |
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236 _crypt32.CertFreeCertificateContext.restype = _BOOL |
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237 |
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238 _kernel32.CreateFileA.argtypes = [ |
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239 _LPCSTR, |
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240 _DWORD, |
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241 _DWORD, |
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242 ctypes.c_void_p, |
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243 _DWORD, |
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244 _DWORD, |
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245 _HANDLE, |
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246 ] |
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247 _kernel32.CreateFileA.restype = _HANDLE |
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248 |
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249 _kernel32.GetFileInformationByHandle.argtypes = [_HANDLE, ctypes.c_void_p] |
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250 _kernel32.GetFileInformationByHandle.restype = _BOOL |
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251 |
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252 _kernel32.CloseHandle.argtypes = [_HANDLE] |
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253 _kernel32.CloseHandle.restype = _BOOL |
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254 |
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255 try: |
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256 _kernel32.CreateHardLinkA.argtypes = [_LPCSTR, _LPCSTR, ctypes.c_void_p] |
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257 _kernel32.CreateHardLinkA.restype = _BOOL |
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258 except AttributeError: |
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259 pass |
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260 |
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261 _kernel32.SetFileAttributesA.argtypes = [_LPCSTR, _DWORD] |
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262 _kernel32.SetFileAttributesA.restype = _BOOL |
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263 |
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264 _DRIVE_UNKNOWN = 0 |
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265 _DRIVE_NO_ROOT_DIR = 1 |
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266 _DRIVE_REMOVABLE = 2 |
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267 _DRIVE_FIXED = 3 |
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268 _DRIVE_REMOTE = 4 |
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269 _DRIVE_CDROM = 5 |
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270 _DRIVE_RAMDISK = 6 |
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271 |
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272 _kernel32.GetDriveTypeA.argtypes = [_LPCSTR] |
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273 _kernel32.GetDriveTypeA.restype = _UINT |
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274 |
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275 _kernel32.GetVolumeInformationA.argtypes = [ |
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276 _LPCSTR, |
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277 ctypes.c_void_p, |
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278 _DWORD, |
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279 ctypes.c_void_p, |
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280 ctypes.c_void_p, |
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281 ctypes.c_void_p, |
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282 ctypes.c_void_p, |
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283 _DWORD, |
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284 ] |
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285 _kernel32.GetVolumeInformationA.restype = _BOOL |
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286 |
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287 _kernel32.GetVolumePathNameA.argtypes = [_LPCSTR, ctypes.c_void_p, _DWORD] |
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288 _kernel32.GetVolumePathNameA.restype = _BOOL |
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289 |
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290 _kernel32.OpenProcess.argtypes = [_DWORD, _BOOL, _DWORD] |
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291 _kernel32.OpenProcess.restype = _HANDLE |
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292 |
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293 _kernel32.GetExitCodeProcess.argtypes = [_HANDLE, ctypes.c_void_p] |
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294 _kernel32.GetExitCodeProcess.restype = _BOOL |
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295 |
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296 _kernel32.GetLastError.argtypes = [] |
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297 _kernel32.GetLastError.restype = _DWORD |
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298 |
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299 _kernel32.GetModuleFileNameA.argtypes = [_HANDLE, ctypes.c_void_p, _DWORD] |
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300 _kernel32.GetModuleFileNameA.restype = _DWORD |
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301 |
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302 _kernel32.CreateProcessA.argtypes = [ |
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303 _LPCSTR, |
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304 _LPCSTR, |
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305 ctypes.c_void_p, |
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306 ctypes.c_void_p, |
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307 _BOOL, |
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308 _DWORD, |
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309 ctypes.c_void_p, |
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310 _LPCSTR, |
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311 ctypes.c_void_p, |
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312 ctypes.c_void_p, |
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313 ] |
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314 _kernel32.CreateProcessA.restype = _BOOL |
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315 |
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316 _kernel32.ExitProcess.argtypes = [_UINT] |
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317 _kernel32.ExitProcess.restype = None |
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318 |
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319 _kernel32.GetCurrentProcessId.argtypes = [] |
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320 _kernel32.GetCurrentProcessId.restype = _DWORD |
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321 |
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322 # pytype: disable=module-attr |
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323 _SIGNAL_HANDLER = ctypes.WINFUNCTYPE(_BOOL, _DWORD) |
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324 # pytype: enable=module-attr |
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325 _kernel32.SetConsoleCtrlHandler.argtypes = [_SIGNAL_HANDLER, _BOOL] |
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326 _kernel32.SetConsoleCtrlHandler.restype = _BOOL |
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327 |
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328 _kernel32.SetConsoleMode.argtypes = [_HANDLE, _DWORD] |
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329 _kernel32.SetConsoleMode.restype = _BOOL |
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330 |
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331 _kernel32.GetConsoleMode.argtypes = [_HANDLE, ctypes.c_void_p] |
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332 _kernel32.GetConsoleMode.restype = _BOOL |
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333 |
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334 _kernel32.GetStdHandle.argtypes = [_DWORD] |
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335 _kernel32.GetStdHandle.restype = _HANDLE |
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336 |
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337 _kernel32.GetConsoleScreenBufferInfo.argtypes = [_HANDLE, ctypes.c_void_p] |
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338 _kernel32.GetConsoleScreenBufferInfo.restype = _BOOL |
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339 |
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340 _advapi32.GetUserNameA.argtypes = [ctypes.c_void_p, ctypes.c_void_p] |
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341 _advapi32.GetUserNameA.restype = _BOOL |
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342 |
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343 _user32.GetWindowThreadProcessId.argtypes = [_HANDLE, ctypes.c_void_p] |
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344 _user32.GetWindowThreadProcessId.restype = _DWORD |
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345 |
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346 _user32.ShowWindow.argtypes = [_HANDLE, ctypes.c_int] |
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347 _user32.ShowWindow.restype = _BOOL |
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348 |
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349 # pytype: disable=module-attr |
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350 _WNDENUMPROC = ctypes.WINFUNCTYPE(_BOOL, _HWND, _LPARAM) |
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351 # pytype: enable=module-attr |
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352 _user32.EnumWindows.argtypes = [_WNDENUMPROC, _LPARAM] |
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353 _user32.EnumWindows.restype = _BOOL |
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354 |
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355 _kernel32.PeekNamedPipe.argtypes = [ |
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356 _HANDLE, |
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357 ctypes.c_void_p, |
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358 _DWORD, |
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359 ctypes.c_void_p, |
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360 ctypes.c_void_p, |
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361 ctypes.c_void_p, |
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362 ] |
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363 _kernel32.PeekNamedPipe.restype = _BOOL |
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364 |
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365 |
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366 def _raiseoserror(name: bytes) -> NoReturn: |
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367 # Force the code to a signed int to avoid an 'int too large' error. |
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368 # See https://bugs.python.org/issue28474 |
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369 code = _kernel32.GetLastError() |
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370 if code > 0x7FFFFFFF: |
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371 code -= 2 ** 32 |
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372 err = ctypes.WinError(code=code) # pytype: disable=module-attr |
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373 raise OSError( |
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374 err.errno, '%s: %s' % (encoding.strfromlocal(name), err.strerror) |
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375 ) |
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376 |
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377 |
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378 def _getfileinfo(name: bytes) -> _BY_HANDLE_FILE_INFORMATION: |
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379 fh = _kernel32.CreateFileA( |
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380 name, |
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381 0, |
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382 _FILE_SHARE_READ | _FILE_SHARE_WRITE | _FILE_SHARE_DELETE, |
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383 None, |
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384 _OPEN_EXISTING, |
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385 _FILE_FLAG_BACKUP_SEMANTICS, |
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386 None, |
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387 ) |
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388 if fh == _INVALID_HANDLE_VALUE: |
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389 _raiseoserror(name) |
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390 try: |
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391 fi = _BY_HANDLE_FILE_INFORMATION() |
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392 if not _kernel32.GetFileInformationByHandle(fh, ctypes.byref(fi)): |
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393 _raiseoserror(name) |
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394 return fi |
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395 finally: |
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396 _kernel32.CloseHandle(fh) |
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397 |
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398 |
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399 def checkcertificatechain(cert: bytes, build: bool = True) -> bool: |
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400 """Tests the given certificate to see if there is a complete chain to a |
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401 trusted root certificate. As a side effect, missing certificates are |
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402 downloaded and installed unless ``build=False``. True is returned if a |
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403 chain to a trusted root exists (even if built on the fly), otherwise |
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404 False. NB: A chain to a trusted root does NOT imply that the certificate |
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405 is valid. |
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406 """ |
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407 |
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408 chainctxptr = ctypes.POINTER(CERT_CHAIN_CONTEXT) |
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409 |
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410 pchainctx = chainctxptr() |
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411 chainpara = CERT_CHAIN_PARA( |
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412 cbSize=ctypes.sizeof(CERT_CHAIN_PARA), RequestedUsage=CERT_USAGE_MATCH() |
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413 ) |
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414 |
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415 certctx = _crypt32.CertCreateCertificateContext( |
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416 X509_ASN_ENCODING, cert, len(cert) |
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417 ) |
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418 if certctx is None: |
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419 _raiseoserror(b'CertCreateCertificateContext') |
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420 |
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421 flags = 0 |
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422 |
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423 if not build: |
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424 flags |= 0x100 # CERT_CHAIN_DISABLE_AUTH_ROOT_AUTO_UPDATE |
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425 |
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426 try: |
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427 # Building the certificate chain will update root certs as necessary. |
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428 if not _crypt32.CertGetCertificateChain( |
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429 None, # hChainEngine |
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430 certctx, # pCertContext |
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431 None, # pTime |
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432 None, # hAdditionalStore |
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433 ctypes.byref(chainpara), |
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434 flags, |
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435 None, # pvReserved |
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436 ctypes.byref(pchainctx), |
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437 ): |
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438 _raiseoserror(b'CertGetCertificateChain') |
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439 |
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440 chainctx = pchainctx.contents |
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441 |
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442 return chainctx.dwErrorStatus & CERT_TRUST_IS_PARTIAL_CHAIN == 0 |
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443 finally: |
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444 if pchainctx: |
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445 _crypt32.CertFreeCertificateChain(pchainctx) |
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446 _crypt32.CertFreeCertificateContext(certctx) |
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447 |
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448 |
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449 def oslink(src: bytes, dst: bytes) -> None: |
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450 try: |
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451 if not _kernel32.CreateHardLinkA(dst, src, None): |
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452 _raiseoserror(src) |
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453 except AttributeError: # Wine doesn't support this function |
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454 _raiseoserror(src) |
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455 |
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456 |
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457 def nlinks(name: bytes) -> int: |
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458 '''return number of hardlinks for the given file''' |
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459 return _getfileinfo(name).nNumberOfLinks |
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460 |
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461 |
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462 def samefile(path1: bytes, path2: bytes) -> bool: |
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463 '''Returns whether path1 and path2 refer to the same file or directory.''' |
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464 res1 = _getfileinfo(path1) |
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465 res2 = _getfileinfo(path2) |
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466 return ( |
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467 res1.dwVolumeSerialNumber == res2.dwVolumeSerialNumber |
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468 and res1.nFileIndexHigh == res2.nFileIndexHigh |
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469 and res1.nFileIndexLow == res2.nFileIndexLow |
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470 ) |
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471 |
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472 |
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473 def samedevice(path1: bytes, path2: bytes) -> bool: |
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474 '''Returns whether path1 and path2 are on the same device.''' |
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475 res1 = _getfileinfo(path1) |
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476 res2 = _getfileinfo(path2) |
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477 return res1.dwVolumeSerialNumber == res2.dwVolumeSerialNumber |
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478 |
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479 |
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480 def peekpipe(pipe) -> int: |
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481 handle = msvcrt.get_osfhandle(pipe.fileno()) # pytype: disable=module-attr |
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482 avail = _DWORD() |
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483 |
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484 if not _kernel32.PeekNamedPipe( |
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485 handle, None, 0, None, ctypes.byref(avail), None |
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486 ): |
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487 err = _kernel32.GetLastError() |
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488 if err == _ERROR_BROKEN_PIPE: |
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489 return 0 |
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490 raise ctypes.WinError(err) # pytype: disable=module-attr |
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491 |
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492 return avail.value |
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493 |
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494 |
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495 def lasterrorwaspipeerror(err) -> bool: |
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496 if err.errno != errno.EINVAL: |
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497 return False |
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498 err = _kernel32.GetLastError() |
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499 return err == _ERROR_BROKEN_PIPE or err == _ERROR_NO_DATA |
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500 |
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501 |
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502 def testpid(pid: int) -> bool: |
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503 """return True if pid is still running or unable to |
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504 determine, False otherwise""" |
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505 h = _kernel32.OpenProcess(_PROCESS_QUERY_INFORMATION, False, pid) |
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506 if h: |
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507 try: |
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508 status = _DWORD() |
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509 if _kernel32.GetExitCodeProcess(h, ctypes.byref(status)): |
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510 return status.value == _STILL_ACTIVE |
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511 finally: |
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512 _kernel32.CloseHandle(h) |
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513 return _kernel32.GetLastError() != _ERROR_INVALID_PARAMETER |
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514 |
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515 |
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516 def executablepath() -> bytes: |
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517 '''return full path of hg.exe''' |
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518 size = 600 |
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519 buf = ctypes.create_string_buffer(size + 1) |
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520 len = _kernel32.GetModuleFileNameA(None, ctypes.byref(buf), size) |
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521 # pytype: disable=module-attr |
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522 if len == 0: |
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523 raise ctypes.WinError() # Note: WinError is a function |
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524 elif len == size: |
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525 raise ctypes.WinError(_ERROR_INSUFFICIENT_BUFFER) |
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526 # pytype: enable=module-attr |
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527 return buf.value |
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528 |
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529 |
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530 def getvolumename(path: bytes) -> Optional[bytes]: |
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531 """Get the mount point of the filesystem from a directory or file |
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532 (best-effort) |
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533 |
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534 Returns None if we are unsure. Raises OSError on ENOENT, EPERM, etc. |
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535 """ |
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536 # realpath() calls GetFullPathName() |
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537 realpath = os.path.realpath(path) |
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538 |
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539 # allocate at least MAX_PATH long since GetVolumePathName('c:\\', buf, 4) |
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540 # somehow fails on Windows XP |
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541 size = max(len(realpath), _MAX_PATH) + 1 |
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542 buf = ctypes.create_string_buffer(size) |
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543 |
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544 if not _kernel32.GetVolumePathNameA(realpath, ctypes.byref(buf), size): |
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545 # Note: WinError is a function |
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546 raise ctypes.WinError() # pytype: disable=module-attr |
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547 |
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548 return buf.value |
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549 |
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550 |
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551 def getfstype(path: bytes) -> Optional[bytes]: |
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552 """Get the filesystem type name from a directory or file (best-effort) |
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553 |
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554 Returns None if we are unsure. Raises OSError on ENOENT, EPERM, etc. |
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555 """ |
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556 volume = getvolumename(path) |
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557 |
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558 t = _kernel32.GetDriveTypeA(volume) |
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559 |
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560 if t == _DRIVE_REMOTE: |
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561 return b'cifs' |
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562 elif t not in ( |
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563 _DRIVE_REMOVABLE, |
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564 _DRIVE_FIXED, |
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565 _DRIVE_CDROM, |
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566 _DRIVE_RAMDISK, |
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567 ): |
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568 return None |
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569 |
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570 size = _MAX_PATH + 1 |
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571 name = ctypes.create_string_buffer(size) |
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572 |
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573 if not _kernel32.GetVolumeInformationA( |
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574 volume, None, 0, None, None, None, ctypes.byref(name), size |
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575 ): |
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576 # Note: WinError is a function |
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577 raise ctypes.WinError() # pytype: disable=module-attr |
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578 |
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579 return name.value |
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580 |
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581 |
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582 def getuser() -> bytes: |
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583 '''return name of current user''' |
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584 size = _DWORD(300) |
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585 buf = ctypes.create_string_buffer(size.value + 1) |
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586 if not _advapi32.GetUserNameA(ctypes.byref(buf), ctypes.byref(size)): |
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587 raise ctypes.WinError() # pytype: disable=module-attr |
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588 return buf.value |
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589 |
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590 |
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591 _signalhandler: List[_SIGNAL_HANDLER] = [] |
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592 |
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593 |
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594 def setsignalhandler() -> None: |
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595 """Register a termination handler for console events including |
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596 CTRL+C. python signal handlers do not work well with socket |
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597 operations. |
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598 """ |
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599 |
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600 def handler(event): |
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601 _kernel32.ExitProcess(1) |
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602 |
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603 if _signalhandler: |
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604 return # already registered |
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605 h = _SIGNAL_HANDLER(handler) |
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606 _signalhandler.append(h) # needed to prevent garbage collection |
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607 if not _kernel32.SetConsoleCtrlHandler(h, True): |
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|
608 raise ctypes.WinError() # pytype: disable=module-attr |
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609 |
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610 |
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611 def hidewindow() -> None: |
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612 def callback(hwnd, pid): |
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613 wpid = _DWORD() |
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614 _user32.GetWindowThreadProcessId(hwnd, ctypes.byref(wpid)) |
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615 if pid == wpid.value: |
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616 _user32.ShowWindow(hwnd, _SW_HIDE) |
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617 return False # stop enumerating windows |
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618 return True |
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619 |
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620 pid = _kernel32.GetCurrentProcessId() |
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621 _user32.EnumWindows(_WNDENUMPROC(callback), pid) |
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622 |
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623 |
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624 def termsize() -> Tuple[int, int]: |
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625 # cmd.exe does not handle CR like a unix console, the CR is |
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626 # counted in the line length. On 80 columns consoles, if 80 |
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627 # characters are written, the following CR won't apply on the |
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628 # current line but on the new one. Keep room for it. |
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629 width = 80 - 1 |
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630 height = 25 |
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631 # Query stderr to avoid problems with redirections |
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632 screenbuf = _kernel32.GetStdHandle( |
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633 _STD_ERROR_HANDLE |
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634 ) # don't close the handle returned |
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635 if screenbuf is None or screenbuf == _INVALID_HANDLE_VALUE: |
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636 return width, height |
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637 csbi = _CONSOLE_SCREEN_BUFFER_INFO() |
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638 if not _kernel32.GetConsoleScreenBufferInfo(screenbuf, ctypes.byref(csbi)): |
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639 return width, height |
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640 width = csbi.srWindow.Right - csbi.srWindow.Left # don't '+ 1' |
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641 height = csbi.srWindow.Bottom - csbi.srWindow.Top + 1 |
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642 return width, height |
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643 |
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644 |
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|
645 def enablevtmode() -> bool: |
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646 """Enable virtual terminal mode for the associated console. Return True if |
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647 enabled, else False.""" |
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648 |
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649 ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x4 |
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650 |
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651 handle = _kernel32.GetStdHandle( |
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652 _STD_OUTPUT_HANDLE |
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653 ) # don't close the handle |
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654 if handle == _INVALID_HANDLE_VALUE: |
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655 return False |
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656 |
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657 mode = _DWORD(0) |
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658 |
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659 if not _kernel32.GetConsoleMode(handle, ctypes.byref(mode)): |
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660 return False |
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661 |
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662 if (mode.value & ENABLE_VIRTUAL_TERMINAL_PROCESSING) == 0: |
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663 mode.value |= ENABLE_VIRTUAL_TERMINAL_PROCESSING |
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664 |
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665 if not _kernel32.SetConsoleMode(handle, mode): |
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666 return False |
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667 |
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668 return True |
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669 |
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670 |
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671 def spawndetached(args: List[bytes]) -> int: |
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672 # No standard library function really spawns a fully detached |
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673 # process under win32 because they allocate pipes or other objects |
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674 # to handle standard streams communications. Passing these objects |
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675 # to the child process requires handle inheritance to be enabled |
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676 # which makes really detached processes impossible. |
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677 si = _STARTUPINFO() |
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678 si.cb = ctypes.sizeof(_STARTUPINFO) |
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679 |
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680 pi = _PROCESS_INFORMATION() |
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681 |
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682 env = b'' |
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|
683 for k in encoding.environ: |
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684 env += b"%s=%s\0" % (k, encoding.environ[k]) |
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685 if not env: |
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686 env = b'\0' |
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687 env += b'\0' |
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688 |
39719
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Matt Harbison <matt_harbison@yahoo.com>
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689 args = subprocess.list2cmdline(pycompat.rapply(encoding.strfromlocal, args)) |
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|
690 |
39719
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Matt Harbison <matt_harbison@yahoo.com>
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691 # TODO: CreateProcessW on py3? |
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692 res = _kernel32.CreateProcessA( |
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693 None, |
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|
694 encoding.strtolocal(args), |
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|
695 None, |
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|
696 None, |
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697 False, |
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698 _CREATE_NO_WINDOW, |
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699 env, |
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|
700 encoding.getcwd(), |
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701 ctypes.byref(si), |
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|
702 ctypes.byref(pi), |
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|
703 ) |
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|
704 if not res: |
46784
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typing: disable a few errors when accessing Windows specific attributes
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parents:
45942
diff
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|
705 raise ctypes.WinError() # pytype: disable=module-attr |
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|
706 |
40928
576474baa209
win32: close the handles associated with a spawned child process
Matt Harbison <matt_harbison@yahoo.com>
parents:
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diff
changeset
|
707 _kernel32.CloseHandle(pi.hProcess) |
576474baa209
win32: close the handles associated with a spawned child process
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|
708 _kernel32.CloseHandle(pi.hThread) |
576474baa209
win32: close the handles associated with a spawned child process
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parents:
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|
709 |
32676
4c3d9ee87382
win32: drop a py26 daemonizing hack
Matt Harbison <matt_harbison@yahoo.com>
parents:
32664
diff
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|
710 return pi.dwProcessId |
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711 |
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|
712 |
49810
a9faacdc5943
typing: add type hints to mercurial/win32.py
Matt Harbison <matt_harbison@yahoo.com>
parents:
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diff
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|
713 def unlink(f: bytes) -> None: |
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714 '''try to implement POSIX' unlink semantics on Windows''' |
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|
715 |
21226
4898c37e03c0
win32: backout 1a9ebc83a74c
Steve Borho <steve@borho.org>
parents:
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diff
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|
716 if os.path.isdir(f): |
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win32: backout 1a9ebc83a74c
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|
717 # use EPERM because it is POSIX prescribed value, even though |
4898c37e03c0
win32: backout 1a9ebc83a74c
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|
718 # unlink(2) on directories returns EISDIR on Linux |
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|
719 raise IOError( |
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|
720 errno.EPERM, |
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|
721 r"Unlinking directory not permitted: '%s'" |
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722 % encoding.strfromlocal(f), |
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|
723 ) |
19159
1b329f8c7b24
windows: check target type before actual unlinking to follow POSIX semantics
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18959
diff
changeset
|
724 |
13775
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changeset
|
725 # POSIX allows to unlink and rename open files. Windows has serious |
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726 # problems with doing that: |
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727 # - Calling os.unlink (or os.rename) on a file f fails if f or any |
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|
728 # hardlinked copy of f has been opened with Python's open(). There is no |
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|
729 # way such a file can be deleted or renamed on Windows (other than |
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|
730 # scheduling the delete or rename for the next reboot). |
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changeset
|
731 # - Calling os.unlink on a file that has been opened with Mercurial's |
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changeset
|
732 # posixfile (or comparable methods) will delay the actual deletion of |
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|
733 # the file for as long as the file is held open. The filename is blocked |
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|
734 # during that time and cannot be used for recreating a new file under |
930efdc6bfa4
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changeset
|
735 # that same name ("zombie file"). Directories containing such zombie files |
930efdc6bfa4
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|
736 # cannot be removed or moved. |
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|
737 # A file that has been opened with posixfile can be renamed, so we rename |
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|
738 # f to a random temporary name before calling os.unlink on it. This allows |
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changeset
|
739 # callers to recreate f immediately while having other readers do their |
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|
740 # implicit zombie filename blocking on a temporary name. |
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|
741 |
49284
d44e3c45f0e4
py3: replace `pycompat.xrange` by `range`
Manuel Jacob <me@manueljacob.de>
parents:
48875
diff
changeset
|
742 for tries in range(10): |
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|
743 temp = b'%s-%08x' % (f, random.randint(0, 0xFFFFFFFF)) |
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|
744 try: |
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py3: catch FileExistsError instead of checking errno == EEXIST
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|
745 os.rename(f, temp) |
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|
746 break |
49305
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diff
changeset
|
747 except FileExistsError: |
53e9422a9b45
py3: catch FileExistsError instead of checking errno == EEXIST
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parents:
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diff
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|
748 pass |
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changeset
|
749 else: |
43503
313e3a279828
cleanup: remove pointless r-prefixes on double-quoted strings
Augie Fackler <augie@google.com>
parents:
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changeset
|
750 raise IOError(errno.EEXIST, "No usable temporary filename found") |
13775
930efdc6bfa4
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|
751 |
930efdc6bfa4
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changeset
|
752 try: |
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changeset
|
753 os.unlink(temp) |
13776
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win32: remove READONLY attribute on unlink
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changeset
|
754 except OSError: |
a2f0fdb1e488
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changeset
|
755 # The unlink might have failed because the READONLY attribute may heave |
a2f0fdb1e488
win32: remove READONLY attribute on unlink
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changeset
|
756 # been set on the original file. Rename works fine with READONLY set, |
a2f0fdb1e488
win32: remove READONLY attribute on unlink
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changeset
|
757 # but not os.unlink. Reset all attributes and try again. |
a2f0fdb1e488
win32: remove READONLY attribute on unlink
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changeset
|
758 _kernel32.SetFileAttributesA(temp, _FILE_ATTRIBUTE_NORMAL) |
a2f0fdb1e488
win32: remove READONLY attribute on unlink
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diff
changeset
|
759 try: |
a2f0fdb1e488
win32: remove READONLY attribute on unlink
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changeset
|
760 os.unlink(temp) |
a2f0fdb1e488
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changeset
|
761 except OSError: |
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win32: remove READONLY attribute on unlink
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changeset
|
762 # The unlink might have failed due to some very rude AV-Scanners. |
a2f0fdb1e488
win32: remove READONLY attribute on unlink
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diff
changeset
|
763 # Leaking a tempfile is the lesser evil than aborting here and |
a2f0fdb1e488
win32: remove READONLY attribute on unlink
Adrian Buehlmann <adrian@cadifra.com>
parents:
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diff
changeset
|
764 # leaving some potentially serious inconsistencies. |
a2f0fdb1e488
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parents:
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diff
changeset
|
765 pass |
13795
43b5fe18ea6c
set NOT_CONTENT_INDEXED on .hg dir (issue2694)
Adrian Buehlmann <adrian@cadifra.com>
parents:
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diff
changeset
|
766 |
43076
2372284d9457
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Augie Fackler <augie@google.com>
parents:
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diff
changeset
|
767 |
49810
a9faacdc5943
typing: add type hints to mercurial/win32.py
Matt Harbison <matt_harbison@yahoo.com>
parents:
49305
diff
changeset
|
768 def makedir(path: bytes, notindexed: bool) -> None: |
13795
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set NOT_CONTENT_INDEXED on .hg dir (issue2694)
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diff
changeset
|
769 os.mkdir(path) |
43b5fe18ea6c
set NOT_CONTENT_INDEXED on .hg dir (issue2694)
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diff
changeset
|
770 if notindexed: |
43b5fe18ea6c
set NOT_CONTENT_INDEXED on .hg dir (issue2694)
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diff
changeset
|
771 _kernel32.SetFileAttributesA(path, _FILE_ATTRIBUTE_NOT_CONTENT_INDEXED) |