Mercurial > hg
annotate mercurial/win32.py @ 49444:52f31b660d38
perf: quiet stdout output in perf::unbundle
There a lot of repetitive bundle application message we do not care about.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Thu, 25 Aug 2022 05:11:48 +0200 |
parents | 53e9422a9b45 |
children | a9faacdc5943 |
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 . import ( |
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18 encoding, |
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19 pycompat, |
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20 ) |
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21 |
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22 # pytype: disable=module-attr |
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23 _kernel32 = ctypes.windll.kernel32 |
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24 _advapi32 = ctypes.windll.advapi32 |
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25 _user32 = ctypes.windll.user32 |
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26 _crypt32 = ctypes.windll.crypt32 |
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27 # pytype: enable=module-attr |
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28 |
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29 _BOOL = ctypes.c_long |
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30 _WORD = ctypes.c_ushort |
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31 _DWORD = ctypes.c_ulong |
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32 _UINT = ctypes.c_uint |
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33 _LONG = ctypes.c_long |
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34 _LPCSTR = _LPSTR = ctypes.c_char_p |
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35 _HANDLE = ctypes.c_void_p |
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36 _HWND = _HANDLE |
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37 _PCCERT_CONTEXT = ctypes.c_void_p |
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38 _MAX_PATH = wintypes.MAX_PATH |
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39 |
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40 _INVALID_HANDLE_VALUE = _HANDLE(-1).value |
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41 |
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42 # GetLastError |
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43 _ERROR_SUCCESS = 0 |
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44 _ERROR_NO_MORE_FILES = 18 |
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45 _ERROR_INVALID_PARAMETER = 87 |
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46 _ERROR_BROKEN_PIPE = 109 |
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47 _ERROR_INSUFFICIENT_BUFFER = 122 |
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48 _ERROR_NO_DATA = 232 |
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49 |
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50 # WPARAM is defined as UINT_PTR (unsigned type) |
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51 # LPARAM is defined as LONG_PTR (signed type) |
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52 if ctypes.sizeof(ctypes.c_long) == ctypes.sizeof(ctypes.c_void_p): |
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53 _WPARAM = ctypes.c_ulong |
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54 _LPARAM = ctypes.c_long |
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55 elif ctypes.sizeof(ctypes.c_longlong) == ctypes.sizeof(ctypes.c_void_p): |
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56 _WPARAM = ctypes.c_ulonglong |
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57 _LPARAM = ctypes.c_longlong |
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58 |
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59 |
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60 class _FILETIME(ctypes.Structure): |
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61 _fields_ = [('dwLowDateTime', _DWORD), ('dwHighDateTime', _DWORD)] |
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62 |
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63 |
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64 class _BY_HANDLE_FILE_INFORMATION(ctypes.Structure): |
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65 _fields_ = [ |
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66 ('dwFileAttributes', _DWORD), |
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67 ('ftCreationTime', _FILETIME), |
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68 ('ftLastAccessTime', _FILETIME), |
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69 ('ftLastWriteTime', _FILETIME), |
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70 ('dwVolumeSerialNumber', _DWORD), |
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71 ('nFileSizeHigh', _DWORD), |
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72 ('nFileSizeLow', _DWORD), |
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73 ('nNumberOfLinks', _DWORD), |
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74 ('nFileIndexHigh', _DWORD), |
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75 ('nFileIndexLow', _DWORD), |
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76 ] |
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77 |
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78 |
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79 # CreateFile |
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80 _FILE_SHARE_READ = 0x00000001 |
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81 _FILE_SHARE_WRITE = 0x00000002 |
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82 _FILE_SHARE_DELETE = 0x00000004 |
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83 |
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84 _OPEN_EXISTING = 3 |
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85 |
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86 _FILE_FLAG_BACKUP_SEMANTICS = 0x02000000 |
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87 |
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88 # SetFileAttributes |
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89 _FILE_ATTRIBUTE_NORMAL = 0x80 |
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90 _FILE_ATTRIBUTE_NOT_CONTENT_INDEXED = 0x2000 |
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91 |
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92 # Process Security and Access Rights |
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93 _PROCESS_QUERY_INFORMATION = 0x0400 |
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94 |
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95 # GetExitCodeProcess |
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96 _STILL_ACTIVE = 259 |
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97 |
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98 |
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99 class _STARTUPINFO(ctypes.Structure): |
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100 _fields_ = [ |
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101 ('cb', _DWORD), |
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102 ('lpReserved', _LPSTR), |
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103 ('lpDesktop', _LPSTR), |
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104 ('lpTitle', _LPSTR), |
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105 ('dwX', _DWORD), |
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106 ('dwY', _DWORD), |
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107 ('dwXSize', _DWORD), |
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108 ('dwYSize', _DWORD), |
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109 ('dwXCountChars', _DWORD), |
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110 ('dwYCountChars', _DWORD), |
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111 ('dwFillAttribute', _DWORD), |
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112 ('dwFlags', _DWORD), |
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113 ('wShowWindow', _WORD), |
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114 ('cbReserved2', _WORD), |
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115 ('lpReserved2', ctypes.c_char_p), |
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116 ('hStdInput', _HANDLE), |
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117 ('hStdOutput', _HANDLE), |
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118 ('hStdError', _HANDLE), |
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119 ] |
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120 |
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121 |
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122 class _PROCESS_INFORMATION(ctypes.Structure): |
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123 _fields_ = [ |
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124 ('hProcess', _HANDLE), |
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125 ('hThread', _HANDLE), |
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126 ('dwProcessId', _DWORD), |
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127 ('dwThreadId', _DWORD), |
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128 ] |
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129 |
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130 |
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131 _CREATE_NO_WINDOW = 0x08000000 |
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132 _SW_HIDE = 0 |
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133 |
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134 |
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135 class _COORD(ctypes.Structure): |
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136 _fields_ = [('X', ctypes.c_short), ('Y', ctypes.c_short)] |
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137 |
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138 |
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139 class _SMALL_RECT(ctypes.Structure): |
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140 _fields_ = [ |
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141 ('Left', ctypes.c_short), |
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142 ('Top', ctypes.c_short), |
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143 ('Right', ctypes.c_short), |
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144 ('Bottom', ctypes.c_short), |
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145 ] |
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146 |
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147 |
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148 class _CONSOLE_SCREEN_BUFFER_INFO(ctypes.Structure): |
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149 _fields_ = [ |
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150 ('dwSize', _COORD), |
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151 ('dwCursorPosition', _COORD), |
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152 ('wAttributes', _WORD), |
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153 ('srWindow', _SMALL_RECT), |
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154 ('dwMaximumWindowSize', _COORD), |
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155 ] |
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156 |
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157 |
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158 _STD_OUTPUT_HANDLE = _DWORD(-11).value |
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159 _STD_ERROR_HANDLE = _DWORD(-12).value |
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160 |
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161 # CERT_TRUST_STATUS dwErrorStatus |
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162 CERT_TRUST_IS_PARTIAL_CHAIN = 0x10000 |
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163 |
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164 # CertCreateCertificateContext encodings |
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165 X509_ASN_ENCODING = 0x00000001 |
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166 PKCS_7_ASN_ENCODING = 0x00010000 |
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167 |
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168 # These structs are only complete enough to achieve what we need. |
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169 class CERT_CHAIN_CONTEXT(ctypes.Structure): |
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170 _fields_ = ( |
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171 ("cbSize", _DWORD), |
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172 # CERT_TRUST_STATUS struct |
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173 ("dwErrorStatus", _DWORD), |
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174 ("dwInfoStatus", _DWORD), |
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175 ("cChain", _DWORD), |
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176 ("rgpChain", ctypes.c_void_p), |
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177 ("cLowerQualityChainContext", _DWORD), |
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178 ("rgpLowerQualityChainContext", ctypes.c_void_p), |
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179 ("fHasRevocationFreshnessTime", _BOOL), |
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180 ("dwRevocationFreshnessTime", _DWORD), |
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181 ) |
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182 |
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183 |
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184 class CERT_USAGE_MATCH(ctypes.Structure): |
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185 _fields_ = ( |
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186 ("dwType", _DWORD), |
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187 # CERT_ENHKEY_USAGE struct |
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188 ("cUsageIdentifier", _DWORD), |
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189 ("rgpszUsageIdentifier", ctypes.c_void_p), # LPSTR * |
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190 ) |
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191 |
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192 |
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193 class CERT_CHAIN_PARA(ctypes.Structure): |
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194 _fields_ = ( |
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195 ("cbSize", _DWORD), |
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196 ("RequestedUsage", CERT_USAGE_MATCH), |
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197 ("RequestedIssuancePolicy", CERT_USAGE_MATCH), |
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198 ("dwUrlRetrievalTimeout", _DWORD), |
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199 ("fCheckRevocationFreshnessTime", _BOOL), |
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200 ("dwRevocationFreshnessTime", _DWORD), |
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201 ("pftCacheResync", ctypes.c_void_p), # LPFILETIME |
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202 ("pStrongSignPara", ctypes.c_void_p), # PCCERT_STRONG_SIGN_PARA |
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203 ("dwStrongSignFlags", _DWORD), |
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204 ) |
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205 |
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206 |
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207 # types of parameters of C functions used (required by pypy) |
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208 |
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209 _crypt32.CertCreateCertificateContext.argtypes = [ |
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210 _DWORD, # cert encoding |
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211 ctypes.c_char_p, # cert |
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212 _DWORD, |
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213 ] # cert size |
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214 _crypt32.CertCreateCertificateContext.restype = _PCCERT_CONTEXT |
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215 |
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216 _crypt32.CertGetCertificateChain.argtypes = [ |
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217 ctypes.c_void_p, # HCERTCHAINENGINE |
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218 _PCCERT_CONTEXT, |
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219 ctypes.c_void_p, # LPFILETIME |
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220 ctypes.c_void_p, # HCERTSTORE |
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221 ctypes.c_void_p, # PCERT_CHAIN_PARA |
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222 _DWORD, |
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223 ctypes.c_void_p, # LPVOID |
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224 ctypes.c_void_p, # PCCERT_CHAIN_CONTEXT * |
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225 ] |
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226 _crypt32.CertGetCertificateChain.restype = _BOOL |
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227 |
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228 _crypt32.CertFreeCertificateContext.argtypes = [_PCCERT_CONTEXT] |
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229 _crypt32.CertFreeCertificateContext.restype = _BOOL |
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230 |
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231 _kernel32.CreateFileA.argtypes = [ |
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232 _LPCSTR, |
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233 _DWORD, |
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234 _DWORD, |
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235 ctypes.c_void_p, |
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236 _DWORD, |
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237 _DWORD, |
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238 _HANDLE, |
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239 ] |
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240 _kernel32.CreateFileA.restype = _HANDLE |
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241 |
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242 _kernel32.GetFileInformationByHandle.argtypes = [_HANDLE, ctypes.c_void_p] |
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243 _kernel32.GetFileInformationByHandle.restype = _BOOL |
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244 |
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245 _kernel32.CloseHandle.argtypes = [_HANDLE] |
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246 _kernel32.CloseHandle.restype = _BOOL |
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247 |
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248 try: |
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249 _kernel32.CreateHardLinkA.argtypes = [_LPCSTR, _LPCSTR, ctypes.c_void_p] |
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250 _kernel32.CreateHardLinkA.restype = _BOOL |
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251 except AttributeError: |
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252 pass |
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253 |
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254 _kernel32.SetFileAttributesA.argtypes = [_LPCSTR, _DWORD] |
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255 _kernel32.SetFileAttributesA.restype = _BOOL |
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256 |
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257 _DRIVE_UNKNOWN = 0 |
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258 _DRIVE_NO_ROOT_DIR = 1 |
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259 _DRIVE_REMOVABLE = 2 |
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260 _DRIVE_FIXED = 3 |
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261 _DRIVE_REMOTE = 4 |
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262 _DRIVE_CDROM = 5 |
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263 _DRIVE_RAMDISK = 6 |
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264 |
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265 _kernel32.GetDriveTypeA.argtypes = [_LPCSTR] |
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266 _kernel32.GetDriveTypeA.restype = _UINT |
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267 |
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268 _kernel32.GetVolumeInformationA.argtypes = [ |
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269 _LPCSTR, |
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270 ctypes.c_void_p, |
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271 _DWORD, |
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272 ctypes.c_void_p, |
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273 ctypes.c_void_p, |
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274 ctypes.c_void_p, |
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275 ctypes.c_void_p, |
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276 _DWORD, |
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277 ] |
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278 _kernel32.GetVolumeInformationA.restype = _BOOL |
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279 |
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280 _kernel32.GetVolumePathNameA.argtypes = [_LPCSTR, ctypes.c_void_p, _DWORD] |
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281 _kernel32.GetVolumePathNameA.restype = _BOOL |
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282 |
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283 _kernel32.OpenProcess.argtypes = [_DWORD, _BOOL, _DWORD] |
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284 _kernel32.OpenProcess.restype = _HANDLE |
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285 |
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286 _kernel32.GetExitCodeProcess.argtypes = [_HANDLE, ctypes.c_void_p] |
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287 _kernel32.GetExitCodeProcess.restype = _BOOL |
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288 |
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289 _kernel32.GetLastError.argtypes = [] |
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290 _kernel32.GetLastError.restype = _DWORD |
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291 |
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292 _kernel32.GetModuleFileNameA.argtypes = [_HANDLE, ctypes.c_void_p, _DWORD] |
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293 _kernel32.GetModuleFileNameA.restype = _DWORD |
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294 |
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295 _kernel32.CreateProcessA.argtypes = [ |
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296 _LPCSTR, |
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297 _LPCSTR, |
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298 ctypes.c_void_p, |
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299 ctypes.c_void_p, |
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300 _BOOL, |
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301 _DWORD, |
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302 ctypes.c_void_p, |
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303 _LPCSTR, |
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304 ctypes.c_void_p, |
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305 ctypes.c_void_p, |
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306 ] |
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307 _kernel32.CreateProcessA.restype = _BOOL |
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308 |
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309 _kernel32.ExitProcess.argtypes = [_UINT] |
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310 _kernel32.ExitProcess.restype = None |
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311 |
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312 _kernel32.GetCurrentProcessId.argtypes = [] |
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313 _kernel32.GetCurrentProcessId.restype = _DWORD |
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314 |
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315 # pytype: disable=module-attr |
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316 _SIGNAL_HANDLER = ctypes.WINFUNCTYPE(_BOOL, _DWORD) |
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317 # pytype: enable=module-attr |
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318 _kernel32.SetConsoleCtrlHandler.argtypes = [_SIGNAL_HANDLER, _BOOL] |
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319 _kernel32.SetConsoleCtrlHandler.restype = _BOOL |
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320 |
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321 _kernel32.SetConsoleMode.argtypes = [_HANDLE, _DWORD] |
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322 _kernel32.SetConsoleMode.restype = _BOOL |
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323 |
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324 _kernel32.GetConsoleMode.argtypes = [_HANDLE, ctypes.c_void_p] |
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325 _kernel32.GetConsoleMode.restype = _BOOL |
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326 |
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327 _kernel32.GetStdHandle.argtypes = [_DWORD] |
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328 _kernel32.GetStdHandle.restype = _HANDLE |
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329 |
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330 _kernel32.GetConsoleScreenBufferInfo.argtypes = [_HANDLE, ctypes.c_void_p] |
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331 _kernel32.GetConsoleScreenBufferInfo.restype = _BOOL |
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332 |
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333 _advapi32.GetUserNameA.argtypes = [ctypes.c_void_p, ctypes.c_void_p] |
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334 _advapi32.GetUserNameA.restype = _BOOL |
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335 |
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336 _user32.GetWindowThreadProcessId.argtypes = [_HANDLE, ctypes.c_void_p] |
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337 _user32.GetWindowThreadProcessId.restype = _DWORD |
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338 |
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339 _user32.ShowWindow.argtypes = [_HANDLE, ctypes.c_int] |
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340 _user32.ShowWindow.restype = _BOOL |
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341 |
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342 # pytype: disable=module-attr |
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343 _WNDENUMPROC = ctypes.WINFUNCTYPE(_BOOL, _HWND, _LPARAM) |
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344 # pytype: enable=module-attr |
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345 _user32.EnumWindows.argtypes = [_WNDENUMPROC, _LPARAM] |
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346 _user32.EnumWindows.restype = _BOOL |
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347 |
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348 _kernel32.PeekNamedPipe.argtypes = [ |
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349 _HANDLE, |
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350 ctypes.c_void_p, |
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351 _DWORD, |
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352 ctypes.c_void_p, |
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353 ctypes.c_void_p, |
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354 ctypes.c_void_p, |
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355 ] |
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356 _kernel32.PeekNamedPipe.restype = _BOOL |
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357 |
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358 |
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359 def _raiseoserror(name): |
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360 # Force the code to a signed int to avoid an 'int too large' error. |
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361 # See https://bugs.python.org/issue28474 |
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362 code = _kernel32.GetLastError() |
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363 if code > 0x7FFFFFFF: |
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364 code -= 2 ** 32 |
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365 err = ctypes.WinError(code=code) # pytype: disable=module-attr |
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366 raise OSError( |
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367 err.errno, '%s: %s' % (encoding.strfromlocal(name), err.strerror) |
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368 ) |
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369 |
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370 |
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371 def _getfileinfo(name): |
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372 fh = _kernel32.CreateFileA( |
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373 name, |
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374 0, |
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375 _FILE_SHARE_READ | _FILE_SHARE_WRITE | _FILE_SHARE_DELETE, |
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376 None, |
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377 _OPEN_EXISTING, |
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378 _FILE_FLAG_BACKUP_SEMANTICS, |
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379 None, |
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380 ) |
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381 if fh == _INVALID_HANDLE_VALUE: |
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382 _raiseoserror(name) |
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383 try: |
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384 fi = _BY_HANDLE_FILE_INFORMATION() |
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385 if not _kernel32.GetFileInformationByHandle(fh, ctypes.byref(fi)): |
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386 _raiseoserror(name) |
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387 return fi |
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388 finally: |
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389 _kernel32.CloseHandle(fh) |
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390 |
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391 |
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392 def checkcertificatechain(cert, build=True): |
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393 """Tests the given certificate to see if there is a complete chain to a |
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394 trusted root certificate. As a side effect, missing certificates are |
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395 downloaded and installed unless ``build=False``. True is returned if a |
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396 chain to a trusted root exists (even if built on the fly), otherwise |
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397 False. NB: A chain to a trusted root does NOT imply that the certificate |
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398 is valid. |
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399 """ |
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400 |
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401 chainctxptr = ctypes.POINTER(CERT_CHAIN_CONTEXT) |
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402 |
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403 pchainctx = chainctxptr() |
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404 chainpara = CERT_CHAIN_PARA( |
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405 cbSize=ctypes.sizeof(CERT_CHAIN_PARA), RequestedUsage=CERT_USAGE_MATCH() |
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406 ) |
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407 |
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408 certctx = _crypt32.CertCreateCertificateContext( |
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409 X509_ASN_ENCODING, cert, len(cert) |
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410 ) |
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411 if certctx is None: |
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412 _raiseoserror(b'CertCreateCertificateContext') |
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413 |
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414 flags = 0 |
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415 |
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416 if not build: |
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417 flags |= 0x100 # CERT_CHAIN_DISABLE_AUTH_ROOT_AUTO_UPDATE |
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418 |
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419 try: |
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420 # Building the certificate chain will update root certs as necessary. |
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421 if not _crypt32.CertGetCertificateChain( |
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422 None, # hChainEngine |
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423 certctx, # pCertContext |
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424 None, # pTime |
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425 None, # hAdditionalStore |
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426 ctypes.byref(chainpara), |
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427 flags, |
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428 None, # pvReserved |
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429 ctypes.byref(pchainctx), |
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430 ): |
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431 _raiseoserror(b'CertGetCertificateChain') |
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432 |
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433 chainctx = pchainctx.contents |
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434 |
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435 return chainctx.dwErrorStatus & CERT_TRUST_IS_PARTIAL_CHAIN == 0 |
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436 finally: |
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437 if pchainctx: |
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438 _crypt32.CertFreeCertificateChain(pchainctx) |
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439 _crypt32.CertFreeCertificateContext(certctx) |
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440 |
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441 |
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442 def oslink(src, dst): |
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443 try: |
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444 if not _kernel32.CreateHardLinkA(dst, src, None): |
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445 _raiseoserror(src) |
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446 except AttributeError: # Wine doesn't support this function |
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447 _raiseoserror(src) |
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448 |
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449 |
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450 def nlinks(name): |
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451 '''return number of hardlinks for the given file''' |
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452 return _getfileinfo(name).nNumberOfLinks |
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453 |
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454 |
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455 def samefile(path1, path2): |
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456 '''Returns whether path1 and path2 refer to the same file or directory.''' |
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457 res1 = _getfileinfo(path1) |
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458 res2 = _getfileinfo(path2) |
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459 return ( |
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460 res1.dwVolumeSerialNumber == res2.dwVolumeSerialNumber |
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461 and res1.nFileIndexHigh == res2.nFileIndexHigh |
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462 and res1.nFileIndexLow == res2.nFileIndexLow |
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463 ) |
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464 |
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465 |
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466 def samedevice(path1, path2): |
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467 '''Returns whether path1 and path2 are on the same device.''' |
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468 res1 = _getfileinfo(path1) |
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469 res2 = _getfileinfo(path2) |
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470 return res1.dwVolumeSerialNumber == res2.dwVolumeSerialNumber |
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471 |
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472 |
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473 def peekpipe(pipe): |
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474 handle = msvcrt.get_osfhandle(pipe.fileno()) # pytype: disable=module-attr |
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475 avail = _DWORD() |
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476 |
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477 if not _kernel32.PeekNamedPipe( |
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478 handle, None, 0, None, ctypes.byref(avail), None |
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479 ): |
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480 err = _kernel32.GetLastError() |
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481 if err == _ERROR_BROKEN_PIPE: |
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482 return 0 |
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483 raise ctypes.WinError(err) # pytype: disable=module-attr |
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484 |
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485 return avail.value |
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486 |
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487 |
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488 def lasterrorwaspipeerror(err): |
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489 if err.errno != errno.EINVAL: |
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490 return False |
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491 err = _kernel32.GetLastError() |
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492 return err == _ERROR_BROKEN_PIPE or err == _ERROR_NO_DATA |
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493 |
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494 |
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495 def testpid(pid): |
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496 """return True if pid is still running or unable to |
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497 determine, False otherwise""" |
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498 h = _kernel32.OpenProcess(_PROCESS_QUERY_INFORMATION, False, pid) |
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499 if h: |
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500 try: |
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501 status = _DWORD() |
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502 if _kernel32.GetExitCodeProcess(h, ctypes.byref(status)): |
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503 return status.value == _STILL_ACTIVE |
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504 finally: |
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505 _kernel32.CloseHandle(h) |
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506 return _kernel32.GetLastError() != _ERROR_INVALID_PARAMETER |
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507 |
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508 |
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509 def executablepath(): |
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510 '''return full path of hg.exe''' |
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511 size = 600 |
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512 buf = ctypes.create_string_buffer(size + 1) |
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513 len = _kernel32.GetModuleFileNameA(None, ctypes.byref(buf), size) |
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514 # pytype: disable=module-attr |
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515 if len == 0: |
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516 raise ctypes.WinError() # Note: WinError is a function |
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517 elif len == size: |
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518 raise ctypes.WinError(_ERROR_INSUFFICIENT_BUFFER) |
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519 # pytype: enable=module-attr |
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520 return buf.value |
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521 |
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522 |
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523 def getvolumename(path): |
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524 """Get the mount point of the filesystem from a directory or file |
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525 (best-effort) |
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526 |
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527 Returns None if we are unsure. Raises OSError on ENOENT, EPERM, etc. |
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528 """ |
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529 # realpath() calls GetFullPathName() |
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530 realpath = os.path.realpath(path) |
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531 |
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532 # allocate at least MAX_PATH long since GetVolumePathName('c:\\', buf, 4) |
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533 # somehow fails on Windows XP |
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534 size = max(len(realpath), _MAX_PATH) + 1 |
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535 buf = ctypes.create_string_buffer(size) |
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536 |
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537 if not _kernel32.GetVolumePathNameA(realpath, ctypes.byref(buf), size): |
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538 # Note: WinError is a function |
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539 raise ctypes.WinError() # pytype: disable=module-attr |
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540 |
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541 return buf.value |
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542 |
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543 |
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544 def getfstype(path): |
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545 """Get the filesystem type name from a directory or file (best-effort) |
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546 |
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547 Returns None if we are unsure. Raises OSError on ENOENT, EPERM, etc. |
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548 """ |
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549 volume = getvolumename(path) |
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550 |
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551 t = _kernel32.GetDriveTypeA(volume) |
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552 |
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553 if t == _DRIVE_REMOTE: |
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554 return b'cifs' |
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555 elif t not in ( |
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556 _DRIVE_REMOVABLE, |
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557 _DRIVE_FIXED, |
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558 _DRIVE_CDROM, |
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559 _DRIVE_RAMDISK, |
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560 ): |
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561 return None |
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562 |
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563 size = _MAX_PATH + 1 |
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564 name = ctypes.create_string_buffer(size) |
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565 |
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566 if not _kernel32.GetVolumeInformationA( |
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567 volume, None, 0, None, None, None, ctypes.byref(name), size |
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568 ): |
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569 # Note: WinError is a function |
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570 raise ctypes.WinError() # pytype: disable=module-attr |
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571 |
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572 return name.value |
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573 |
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574 |
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575 def getuser(): |
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576 '''return name of current user''' |
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577 size = _DWORD(300) |
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578 buf = ctypes.create_string_buffer(size.value + 1) |
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579 if not _advapi32.GetUserNameA(ctypes.byref(buf), ctypes.byref(size)): |
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580 raise ctypes.WinError() # pytype: disable=module-attr |
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581 return buf.value |
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582 |
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583 |
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584 _signalhandler = [] |
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585 |
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586 |
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587 def setsignalhandler(): |
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588 """Register a termination handler for console events including |
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589 CTRL+C. python signal handlers do not work well with socket |
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590 operations. |
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591 """ |
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592 |
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593 def handler(event): |
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594 _kernel32.ExitProcess(1) |
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595 |
14237
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596 if _signalhandler: |
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597 return # already registered |
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598 h = _SIGNAL_HANDLER(handler) |
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599 _signalhandler.append(h) # needed to prevent garbage collection |
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600 if not _kernel32.SetConsoleCtrlHandler(h, True): |
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changeset
|
601 raise ctypes.WinError() # pytype: disable=module-attr |
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|
602 |
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603 |
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cmdutil: hide child window created by win32 spawndetached()
Patrick Mezard <pmezard@gmail.com>
parents:
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diff
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|
604 def hidewindow(): |
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605 def callback(hwnd, pid): |
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606 wpid = _DWORD() |
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607 _user32.GetWindowThreadProcessId(hwnd, ctypes.byref(wpid)) |
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608 if pid == wpid.value: |
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609 _user32.ShowWindow(hwnd, _SW_HIDE) |
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610 return False # stop enumerating windows |
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611 return True |
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612 |
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613 pid = _kernel32.GetCurrentProcessId() |
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614 _user32.EnumWindows(_WNDENUMPROC(callback), pid) |
11012
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win32: detect console width on Windows
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|
615 |
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616 |
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scmutil: extend termwidth() to return terminal height, renamed to termsize()
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617 def termsize(): |
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618 # cmd.exe does not handle CR like a unix console, the CR is |
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619 # counted in the line length. On 80 columns consoles, if 80 |
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620 # characters are written, the following CR won't apply on the |
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621 # current line but on the new one. Keep room for it. |
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622 width = 80 - 1 |
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623 height = 25 |
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624 # Query stderr to avoid problems with redirections |
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625 screenbuf = _kernel32.GetStdHandle( |
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626 _STD_ERROR_HANDLE |
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627 ) # don't close the handle returned |
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628 if screenbuf is None or screenbuf == _INVALID_HANDLE_VALUE: |
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629 return width, height |
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630 csbi = _CONSOLE_SCREEN_BUFFER_INFO() |
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631 if not _kernel32.GetConsoleScreenBufferInfo(screenbuf, ctypes.byref(csbi)): |
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|
632 return width, height |
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|
633 width = csbi.srWindow.Right - csbi.srWindow.Left # don't '+ 1' |
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|
634 height = csbi.srWindow.Bottom - csbi.srWindow.Top + 1 |
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635 return width, height |
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636 |
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637 |
32664
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|
638 def enablevtmode(): |
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|
639 """Enable virtual terminal mode for the associated console. Return True if |
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|
640 enabled, else False.""" |
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|
641 |
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|
642 ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x4 |
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643 |
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644 handle = _kernel32.GetStdHandle( |
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|
645 _STD_OUTPUT_HANDLE |
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646 ) # don't close the handle |
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647 if handle == _INVALID_HANDLE_VALUE: |
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648 return False |
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|
649 |
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changeset
|
650 mode = _DWORD(0) |
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|
651 |
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|
652 if not _kernel32.GetConsoleMode(handle, ctypes.byref(mode)): |
2d56e6d23be7
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|
653 return False |
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|
654 |
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|
655 if (mode.value & ENABLE_VIRTUAL_TERMINAL_PROCESSING) == 0: |
2d56e6d23be7
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|
656 mode.value |= ENABLE_VIRTUAL_TERMINAL_PROCESSING |
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|
657 |
2d56e6d23be7
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|
658 if not _kernel32.SetConsoleMode(handle, mode): |
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diff
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|
659 return False |
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parents:
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|
660 |
2d56e6d23be7
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|
661 return True |
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|
662 |
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663 |
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|
664 def spawndetached(args): |
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|
665 # No standard library function really spawns a fully detached |
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|
666 # process under win32 because they allocate pipes or other objects |
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|
667 # to handle standard streams communications. Passing these objects |
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|
668 # to the child process requires handle inheritance to be enabled |
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|
669 # which makes really detached processes impossible. |
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|
670 si = _STARTUPINFO() |
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671 si.cb = ctypes.sizeof(_STARTUPINFO) |
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|
672 |
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changeset
|
673 pi = _PROCESS_INFORMATION() |
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|
674 |
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|
675 env = b'' |
30637
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|
676 for k in encoding.environ: |
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|
677 env += b"%s=%s\0" % (k, encoding.environ[k]) |
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|
678 if not env: |
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|
679 env = b'\0' |
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changeset
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680 env += b'\0' |
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|
681 |
39719
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682 args = subprocess.list2cmdline(pycompat.rapply(encoding.strfromlocal, args)) |
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683 |
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684 # TODO: CreateProcessW on py3? |
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685 res = _kernel32.CreateProcessA( |
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686 None, |
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687 encoding.strtolocal(args), |
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688 None, |
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689 None, |
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690 False, |
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691 _CREATE_NO_WINDOW, |
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692 env, |
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693 encoding.getcwd(), |
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694 ctypes.byref(si), |
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695 ctypes.byref(pi), |
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696 ) |
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697 if not res: |
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698 raise ctypes.WinError() # pytype: disable=module-attr |
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699 |
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700 _kernel32.CloseHandle(pi.hProcess) |
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701 _kernel32.CloseHandle(pi.hThread) |
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702 |
32676
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win32: drop a py26 daemonizing hack
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703 return pi.dwProcessId |
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704 |
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705 |
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706 def unlink(f): |
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707 '''try to implement POSIX' unlink semantics on Windows''' |
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708 |
21226
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|
709 if os.path.isdir(f): |
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710 # use EPERM because it is POSIX prescribed value, even though |
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711 # unlink(2) on directories returns EISDIR on Linux |
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712 raise IOError( |
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713 errno.EPERM, |
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714 r"Unlinking directory not permitted: '%s'" |
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715 % encoding.strfromlocal(f), |
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716 ) |
19159
1b329f8c7b24
windows: check target type before actual unlinking to follow POSIX semantics
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
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717 |
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718 # POSIX allows to unlink and rename open files. Windows has serious |
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719 # problems with doing that: |
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720 # - Calling os.unlink (or os.rename) on a file f fails if f or any |
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721 # hardlinked copy of f has been opened with Python's open(). There is no |
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722 # way such a file can be deleted or renamed on Windows (other than |
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723 # scheduling the delete or rename for the next reboot). |
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724 # - Calling os.unlink on a file that has been opened with Mercurial's |
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725 # posixfile (or comparable methods) will delay the actual deletion of |
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726 # the file for as long as the file is held open. The filename is blocked |
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727 # during that time and cannot be used for recreating a new file under |
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728 # that same name ("zombie file"). Directories containing such zombie files |
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729 # cannot be removed or moved. |
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730 # A file that has been opened with posixfile can be renamed, so we rename |
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731 # f to a random temporary name before calling os.unlink on it. This allows |
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732 # callers to recreate f immediately while having other readers do their |
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733 # implicit zombie filename blocking on a temporary name. |
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|
734 |
49284
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735 for tries in range(10): |
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formatting: byteify all mercurial/ and hgext/ string literals
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736 temp = b'%s-%08x' % (f, random.randint(0, 0xFFFFFFFF)) |
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737 try: |
49305
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738 os.rename(f, temp) |
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739 break |
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740 except FileExistsError: |
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741 pass |
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742 else: |
43503
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743 raise IOError(errno.EEXIST, "No usable temporary filename found") |
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744 |
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745 try: |
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|
746 os.unlink(temp) |
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747 except OSError: |
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748 # The unlink might have failed because the READONLY attribute may heave |
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749 # been set on the original file. Rename works fine with READONLY set, |
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|
750 # but not os.unlink. Reset all attributes and try again. |
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751 _kernel32.SetFileAttributesA(temp, _FILE_ATTRIBUTE_NORMAL) |
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|
752 try: |
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|
753 os.unlink(temp) |
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|
754 except OSError: |
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|
755 # The unlink might have failed due to some very rude AV-Scanners. |
a2f0fdb1e488
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|
756 # Leaking a tempfile is the lesser evil than aborting here and |
a2f0fdb1e488
win32: remove READONLY attribute on unlink
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changeset
|
757 # leaving some potentially serious inconsistencies. |
a2f0fdb1e488
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changeset
|
758 pass |
13795
43b5fe18ea6c
set NOT_CONTENT_INDEXED on .hg dir (issue2694)
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changeset
|
759 |
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|
760 |
13795
43b5fe18ea6c
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changeset
|
761 def makedir(path, notindexed): |
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changeset
|
762 os.mkdir(path) |
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set NOT_CONTENT_INDEXED on .hg dir (issue2694)
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changeset
|
763 if notindexed: |
43b5fe18ea6c
set NOT_CONTENT_INDEXED on .hg dir (issue2694)
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changeset
|
764 _kernel32.SetFileAttributesA(path, _FILE_ATTRIBUTE_NOT_CONTENT_INDEXED) |