Mercurial > hg
annotate mercurial/win32.py @ 35350:82ee401135dd
py3: handle keyword arguments correctly in cmdutil.py
Differential Revision: https://phab.mercurial-scm.org/D1626
author | Pulkit Goyal <7895pulkit@gmail.com> |
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date | Sun, 10 Dec 2017 04:45:10 +0530 |
parents | d5b2beca16c0 |
children | 2062f7c2ac83 |
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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 Matt Mackall <mpm@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 from __future__ import absolute_import |
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9 |
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10 import ctypes |
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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 _kernel32 = ctypes.windll.kernel32 |
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23 _advapi32 = ctypes.windll.advapi32 |
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24 _user32 = ctypes.windll.user32 |
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25 _crypt32 = ctypes.windll.crypt32 |
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26 |
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27 _BOOL = ctypes.c_long |
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28 _WORD = ctypes.c_ushort |
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29 _DWORD = ctypes.c_ulong |
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30 _UINT = ctypes.c_uint |
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31 _LONG = ctypes.c_long |
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32 _LPCSTR = _LPSTR = ctypes.c_char_p |
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33 _HANDLE = ctypes.c_void_p |
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34 _HWND = _HANDLE |
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35 _PCCERT_CONTEXT = ctypes.c_void_p |
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36 |
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37 _INVALID_HANDLE_VALUE = _HANDLE(-1).value |
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38 |
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39 # GetLastError |
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40 _ERROR_SUCCESS = 0 |
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41 _ERROR_NO_MORE_FILES = 18 |
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42 _ERROR_INVALID_PARAMETER = 87 |
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43 _ERROR_BROKEN_PIPE = 109 |
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44 _ERROR_INSUFFICIENT_BUFFER = 122 |
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45 |
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46 # WPARAM is defined as UINT_PTR (unsigned type) |
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47 # LPARAM is defined as LONG_PTR (signed type) |
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48 if ctypes.sizeof(ctypes.c_long) == ctypes.sizeof(ctypes.c_void_p): |
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49 _WPARAM = ctypes.c_ulong |
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50 _LPARAM = ctypes.c_long |
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51 elif ctypes.sizeof(ctypes.c_longlong) == ctypes.sizeof(ctypes.c_void_p): |
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52 _WPARAM = ctypes.c_ulonglong |
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53 _LPARAM = ctypes.c_longlong |
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54 |
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55 class _FILETIME(ctypes.Structure): |
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56 _fields_ = [('dwLowDateTime', _DWORD), |
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57 ('dwHighDateTime', _DWORD)] |
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58 |
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59 class _BY_HANDLE_FILE_INFORMATION(ctypes.Structure): |
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60 _fields_ = [('dwFileAttributes', _DWORD), |
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61 ('ftCreationTime', _FILETIME), |
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62 ('ftLastAccessTime', _FILETIME), |
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63 ('ftLastWriteTime', _FILETIME), |
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64 ('dwVolumeSerialNumber', _DWORD), |
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65 ('nFileSizeHigh', _DWORD), |
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66 ('nFileSizeLow', _DWORD), |
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67 ('nNumberOfLinks', _DWORD), |
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68 ('nFileIndexHigh', _DWORD), |
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69 ('nFileIndexLow', _DWORD)] |
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70 |
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71 # CreateFile |
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72 _FILE_SHARE_READ = 0x00000001 |
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73 _FILE_SHARE_WRITE = 0x00000002 |
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74 _FILE_SHARE_DELETE = 0x00000004 |
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75 |
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76 _OPEN_EXISTING = 3 |
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77 |
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78 _FILE_FLAG_BACKUP_SEMANTICS = 0x02000000 |
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79 |
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80 # SetFileAttributes |
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81 _FILE_ATTRIBUTE_NORMAL = 0x80 |
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82 _FILE_ATTRIBUTE_NOT_CONTENT_INDEXED = 0x2000 |
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83 |
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84 # Process Security and Access Rights |
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85 _PROCESS_QUERY_INFORMATION = 0x0400 |
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86 |
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87 # GetExitCodeProcess |
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88 _STILL_ACTIVE = 259 |
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89 |
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90 class _STARTUPINFO(ctypes.Structure): |
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91 _fields_ = [('cb', _DWORD), |
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92 ('lpReserved', _LPSTR), |
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93 ('lpDesktop', _LPSTR), |
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94 ('lpTitle', _LPSTR), |
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95 ('dwX', _DWORD), |
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96 ('dwY', _DWORD), |
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97 ('dwXSize', _DWORD), |
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98 ('dwYSize', _DWORD), |
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99 ('dwXCountChars', _DWORD), |
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100 ('dwYCountChars', _DWORD), |
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101 ('dwFillAttribute', _DWORD), |
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102 ('dwFlags', _DWORD), |
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103 ('wShowWindow', _WORD), |
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104 ('cbReserved2', _WORD), |
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105 ('lpReserved2', ctypes.c_char_p), |
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106 ('hStdInput', _HANDLE), |
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107 ('hStdOutput', _HANDLE), |
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108 ('hStdError', _HANDLE)] |
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109 |
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110 class _PROCESS_INFORMATION(ctypes.Structure): |
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111 _fields_ = [('hProcess', _HANDLE), |
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112 ('hThread', _HANDLE), |
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113 ('dwProcessId', _DWORD), |
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114 ('dwThreadId', _DWORD)] |
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115 |
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116 _CREATE_NO_WINDOW = 0x08000000 |
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117 _SW_HIDE = 0 |
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118 |
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119 class _COORD(ctypes.Structure): |
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120 _fields_ = [('X', ctypes.c_short), |
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121 ('Y', ctypes.c_short)] |
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122 |
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123 class _SMALL_RECT(ctypes.Structure): |
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124 _fields_ = [('Left', ctypes.c_short), |
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125 ('Top', ctypes.c_short), |
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126 ('Right', ctypes.c_short), |
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127 ('Bottom', ctypes.c_short)] |
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128 |
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129 class _CONSOLE_SCREEN_BUFFER_INFO(ctypes.Structure): |
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130 _fields_ = [('dwSize', _COORD), |
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131 ('dwCursorPosition', _COORD), |
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132 ('wAttributes', _WORD), |
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133 ('srWindow', _SMALL_RECT), |
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134 ('dwMaximumWindowSize', _COORD)] |
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135 |
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136 _STD_OUTPUT_HANDLE = _DWORD(-11).value |
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137 _STD_ERROR_HANDLE = _DWORD(-12).value |
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138 |
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139 # CERT_TRUST_STATUS dwErrorStatus |
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140 CERT_TRUST_IS_PARTIAL_CHAIN = 0x10000 |
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141 |
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142 # CertCreateCertificateContext encodings |
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143 X509_ASN_ENCODING = 0x00000001 |
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144 PKCS_7_ASN_ENCODING = 0x00010000 |
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145 |
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146 # These structs are only complete enough to achieve what we need. |
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147 class CERT_CHAIN_CONTEXT(ctypes.Structure): |
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148 _fields_ = ( |
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149 ("cbSize", _DWORD), |
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150 |
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151 # CERT_TRUST_STATUS struct |
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152 ("dwErrorStatus", _DWORD), |
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153 ("dwInfoStatus", _DWORD), |
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154 |
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155 ("cChain", _DWORD), |
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156 ("rgpChain", ctypes.c_void_p), |
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157 ("cLowerQualityChainContext", _DWORD), |
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158 ("rgpLowerQualityChainContext", ctypes.c_void_p), |
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159 ("fHasRevocationFreshnessTime", _BOOL), |
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160 ("dwRevocationFreshnessTime", _DWORD), |
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161 ) |
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162 |
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163 class CERT_USAGE_MATCH(ctypes.Structure): |
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164 _fields_ = ( |
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165 ("dwType", _DWORD), |
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166 |
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167 # CERT_ENHKEY_USAGE struct |
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168 ("cUsageIdentifier", _DWORD), |
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169 ("rgpszUsageIdentifier", ctypes.c_void_p), # LPSTR * |
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170 ) |
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171 |
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172 class CERT_CHAIN_PARA(ctypes.Structure): |
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173 _fields_ = ( |
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174 ("cbSize", _DWORD), |
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175 ("RequestedUsage", CERT_USAGE_MATCH), |
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176 ("RequestedIssuancePolicy", CERT_USAGE_MATCH), |
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177 ("dwUrlRetrievalTimeout", _DWORD), |
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178 ("fCheckRevocationFreshnessTime", _BOOL), |
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179 ("dwRevocationFreshnessTime", _DWORD), |
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180 ("pftCacheResync", ctypes.c_void_p), # LPFILETIME |
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181 ("pStrongSignPara", ctypes.c_void_p), # PCCERT_STRONG_SIGN_PARA |
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182 ("dwStrongSignFlags", _DWORD), |
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183 ) |
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184 |
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185 # types of parameters of C functions used (required by pypy) |
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186 |
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187 _crypt32.CertCreateCertificateContext.argtypes = [_DWORD, # cert encoding |
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188 ctypes.c_char_p, # cert |
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189 _DWORD] # cert size |
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190 _crypt32.CertCreateCertificateContext.restype = _PCCERT_CONTEXT |
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191 |
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192 _crypt32.CertGetCertificateChain.argtypes = [ |
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193 ctypes.c_void_p, # HCERTCHAINENGINE |
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194 _PCCERT_CONTEXT, |
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195 ctypes.c_void_p, # LPFILETIME |
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196 ctypes.c_void_p, # HCERTSTORE |
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197 ctypes.c_void_p, # PCERT_CHAIN_PARA |
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198 _DWORD, |
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199 ctypes.c_void_p, # LPVOID |
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200 ctypes.c_void_p # PCCERT_CHAIN_CONTEXT * |
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201 ] |
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202 _crypt32.CertGetCertificateChain.restype = _BOOL |
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203 |
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204 _crypt32.CertFreeCertificateContext.argtypes = [_PCCERT_CONTEXT] |
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205 _crypt32.CertFreeCertificateContext.restype = _BOOL |
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206 |
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207 _kernel32.CreateFileA.argtypes = [_LPCSTR, _DWORD, _DWORD, ctypes.c_void_p, |
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208 _DWORD, _DWORD, _HANDLE] |
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209 _kernel32.CreateFileA.restype = _HANDLE |
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210 |
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211 _kernel32.GetFileInformationByHandle.argtypes = [_HANDLE, ctypes.c_void_p] |
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212 _kernel32.GetFileInformationByHandle.restype = _BOOL |
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213 |
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214 _kernel32.CloseHandle.argtypes = [_HANDLE] |
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215 _kernel32.CloseHandle.restype = _BOOL |
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216 |
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217 try: |
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218 _kernel32.CreateHardLinkA.argtypes = [_LPCSTR, _LPCSTR, ctypes.c_void_p] |
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219 _kernel32.CreateHardLinkA.restype = _BOOL |
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220 except AttributeError: |
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221 pass |
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222 |
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223 _kernel32.SetFileAttributesA.argtypes = [_LPCSTR, _DWORD] |
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224 _kernel32.SetFileAttributesA.restype = _BOOL |
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225 |
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226 _kernel32.OpenProcess.argtypes = [_DWORD, _BOOL, _DWORD] |
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227 _kernel32.OpenProcess.restype = _HANDLE |
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228 |
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229 _kernel32.GetExitCodeProcess.argtypes = [_HANDLE, ctypes.c_void_p] |
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230 _kernel32.GetExitCodeProcess.restype = _BOOL |
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231 |
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232 _kernel32.GetLastError.argtypes = [] |
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233 _kernel32.GetLastError.restype = _DWORD |
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234 |
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235 _kernel32.GetModuleFileNameA.argtypes = [_HANDLE, ctypes.c_void_p, _DWORD] |
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236 _kernel32.GetModuleFileNameA.restype = _DWORD |
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237 |
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238 _kernel32.CreateProcessA.argtypes = [_LPCSTR, _LPCSTR, ctypes.c_void_p, |
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239 ctypes.c_void_p, _BOOL, _DWORD, ctypes.c_void_p, _LPCSTR, ctypes.c_void_p, |
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240 ctypes.c_void_p] |
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241 _kernel32.CreateProcessA.restype = _BOOL |
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242 |
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243 _kernel32.ExitProcess.argtypes = [_UINT] |
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244 _kernel32.ExitProcess.restype = None |
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245 |
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246 _kernel32.GetCurrentProcessId.argtypes = [] |
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247 _kernel32.GetCurrentProcessId.restype = _DWORD |
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248 |
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249 _SIGNAL_HANDLER = ctypes.WINFUNCTYPE(_BOOL, _DWORD) |
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250 _kernel32.SetConsoleCtrlHandler.argtypes = [_SIGNAL_HANDLER, _BOOL] |
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251 _kernel32.SetConsoleCtrlHandler.restype = _BOOL |
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252 |
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253 _kernel32.SetConsoleMode.argtypes = [_HANDLE, _DWORD] |
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254 _kernel32.SetConsoleMode.restype = _BOOL |
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255 |
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256 _kernel32.GetConsoleMode.argtypes = [_HANDLE, ctypes.c_void_p] |
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257 _kernel32.GetConsoleMode.restype = _BOOL |
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258 |
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259 _kernel32.GetStdHandle.argtypes = [_DWORD] |
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260 _kernel32.GetStdHandle.restype = _HANDLE |
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261 |
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262 _kernel32.GetConsoleScreenBufferInfo.argtypes = [_HANDLE, ctypes.c_void_p] |
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263 _kernel32.GetConsoleScreenBufferInfo.restype = _BOOL |
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264 |
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265 _advapi32.GetUserNameA.argtypes = [ctypes.c_void_p, ctypes.c_void_p] |
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266 _advapi32.GetUserNameA.restype = _BOOL |
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267 |
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268 _user32.GetWindowThreadProcessId.argtypes = [_HANDLE, ctypes.c_void_p] |
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269 _user32.GetWindowThreadProcessId.restype = _DWORD |
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270 |
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271 _user32.ShowWindow.argtypes = [_HANDLE, ctypes.c_int] |
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272 _user32.ShowWindow.restype = _BOOL |
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273 |
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274 _WNDENUMPROC = ctypes.WINFUNCTYPE(_BOOL, _HWND, _LPARAM) |
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275 _user32.EnumWindows.argtypes = [_WNDENUMPROC, _LPARAM] |
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276 _user32.EnumWindows.restype = _BOOL |
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277 |
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278 _kernel32.PeekNamedPipe.argtypes = [_HANDLE, ctypes.c_void_p, _DWORD, |
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279 ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p] |
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280 _kernel32.PeekNamedPipe.restype = _BOOL |
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281 |
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282 def _raiseoserror(name): |
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283 # Force the code to a signed int to avoid an 'int too large' error. |
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284 # See https://bugs.python.org/issue28474 |
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285 code = _kernel32.GetLastError() |
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286 if code > 0x7fffffff: |
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287 code -= 2**32 |
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288 err = ctypes.WinError(code=code) |
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289 raise OSError(err.errno, '%s: %s' % (name, |
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290 encoding.strtolocal(err.strerror))) |
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291 |
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292 def _getfileinfo(name): |
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293 fh = _kernel32.CreateFileA(name, 0, |
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294 _FILE_SHARE_READ | _FILE_SHARE_WRITE | _FILE_SHARE_DELETE, |
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295 None, _OPEN_EXISTING, _FILE_FLAG_BACKUP_SEMANTICS, None) |
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296 if fh == _INVALID_HANDLE_VALUE: |
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297 _raiseoserror(name) |
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298 try: |
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299 fi = _BY_HANDLE_FILE_INFORMATION() |
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300 if not _kernel32.GetFileInformationByHandle(fh, ctypes.byref(fi)): |
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301 _raiseoserror(name) |
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302 return fi |
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303 finally: |
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304 _kernel32.CloseHandle(fh) |
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305 |
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306 def checkcertificatechain(cert, build=True): |
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307 '''Tests the given certificate to see if there is a complete chain to a |
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308 trusted root certificate. As a side effect, missing certificates are |
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309 downloaded and installed unless ``build=False``. True is returned if a |
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310 chain to a trusted root exists (even if built on the fly), otherwise |
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311 False. NB: A chain to a trusted root does NOT imply that the certificate |
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312 is valid. |
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313 ''' |
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314 |
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315 chainctxptr = ctypes.POINTER(CERT_CHAIN_CONTEXT) |
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316 |
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317 pchainctx = chainctxptr() |
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318 chainpara = CERT_CHAIN_PARA(cbSize=ctypes.sizeof(CERT_CHAIN_PARA), |
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319 RequestedUsage=CERT_USAGE_MATCH()) |
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320 |
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321 certctx = _crypt32.CertCreateCertificateContext(X509_ASN_ENCODING, cert, |
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322 len(cert)) |
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323 if certctx is None: |
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324 _raiseoserror('CertCreateCertificateContext') |
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325 |
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326 flags = 0 |
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327 |
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328 if not build: |
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329 flags |= 0x100 # CERT_CHAIN_DISABLE_AUTH_ROOT_AUTO_UPDATE |
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330 |
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331 try: |
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332 # Building the certificate chain will update root certs as necessary. |
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333 if not _crypt32.CertGetCertificateChain(None, # hChainEngine |
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334 certctx, # pCertContext |
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335 None, # pTime |
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336 None, # hAdditionalStore |
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337 ctypes.byref(chainpara), |
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338 flags, |
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339 None, # pvReserved |
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340 ctypes.byref(pchainctx)): |
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341 _raiseoserror('CertGetCertificateChain') |
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342 |
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343 chainctx = pchainctx.contents |
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344 |
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345 return chainctx.dwErrorStatus & CERT_TRUST_IS_PARTIAL_CHAIN == 0 |
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346 finally: |
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347 if pchainctx: |
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348 _crypt32.CertFreeCertificateChain(pchainctx) |
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349 _crypt32.CertFreeCertificateContext(certctx) |
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350 |
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351 def oslink(src, dst): |
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352 try: |
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353 if not _kernel32.CreateHardLinkA(dst, src, None): |
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354 _raiseoserror(src) |
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355 except AttributeError: # Wine doesn't support this function |
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356 _raiseoserror(src) |
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357 |
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358 def nlinks(name): |
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359 '''return number of hardlinks for the given file''' |
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360 return _getfileinfo(name).nNumberOfLinks |
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361 |
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362 def samefile(path1, path2): |
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363 '''Returns whether path1 and path2 refer to the same file or directory.''' |
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364 res1 = _getfileinfo(path1) |
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365 res2 = _getfileinfo(path2) |
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366 return (res1.dwVolumeSerialNumber == res2.dwVolumeSerialNumber |
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367 and res1.nFileIndexHigh == res2.nFileIndexHigh |
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368 and res1.nFileIndexLow == res2.nFileIndexLow) |
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369 |
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370 def samedevice(path1, path2): |
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371 '''Returns whether path1 and path2 are on the same device.''' |
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372 res1 = _getfileinfo(path1) |
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373 res2 = _getfileinfo(path2) |
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374 return res1.dwVolumeSerialNumber == res2.dwVolumeSerialNumber |
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375 |
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376 def peekpipe(pipe): |
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377 handle = msvcrt.get_osfhandle(pipe.fileno()) |
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378 avail = _DWORD() |
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379 |
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380 if not _kernel32.PeekNamedPipe(handle, None, 0, None, ctypes.byref(avail), |
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381 None): |
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382 err = _kernel32.GetLastError() |
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383 if err == _ERROR_BROKEN_PIPE: |
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384 return 0 |
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385 raise ctypes.WinError(err) |
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386 |
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387 return avail.value |
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388 |
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389 def testpid(pid): |
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390 '''return True if pid is still running or unable to |
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391 determine, False otherwise''' |
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392 h = _kernel32.OpenProcess(_PROCESS_QUERY_INFORMATION, False, pid) |
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393 if h: |
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394 try: |
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395 status = _DWORD() |
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396 if _kernel32.GetExitCodeProcess(h, ctypes.byref(status)): |
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397 return status.value == _STILL_ACTIVE |
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398 finally: |
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399 _kernel32.CloseHandle(h) |
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400 return _kernel32.GetLastError() != _ERROR_INVALID_PARAMETER |
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|
401 |
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rename util.executable_path to executablepath
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402 def executablepath(): |
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403 '''return full path of hg.exe''' |
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404 size = 600 |
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405 buf = ctypes.create_string_buffer(size + 1) |
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406 len = _kernel32.GetModuleFileNameA(None, ctypes.byref(buf), size) |
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407 if len == 0: |
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408 raise ctypes.WinError() # Note: WinError is a function |
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409 elif len == size: |
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410 raise ctypes.WinError(_ERROR_INSUFFICIENT_BUFFER) |
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411 return buf.value |
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412 |
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util: split out posix, windows, and win32 modules
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413 def getuser(): |
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414 '''return name of current user''' |
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415 size = _DWORD(300) |
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416 buf = ctypes.create_string_buffer(size.value + 1) |
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417 if not _advapi32.GetUserNameA(ctypes.byref(buf), ctypes.byref(size)): |
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418 raise ctypes.WinError() |
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419 return buf.value |
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420 |
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421 _signalhandler = [] |
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422 |
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423 def setsignalhandler(): |
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424 '''Register a termination handler for console events including |
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425 CTRL+C. python signal handlers do not work well with socket |
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426 operations. |
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427 ''' |
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428 def handler(event): |
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429 _kernel32.ExitProcess(1) |
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430 |
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431 if _signalhandler: |
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432 return # already registered |
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433 h = _SIGNAL_HANDLER(handler) |
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434 _signalhandler.append(h) # needed to prevent garbage collection |
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435 if not _kernel32.SetConsoleCtrlHandler(h, True): |
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|
436 raise ctypes.WinError() |
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437 |
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438 def hidewindow(): |
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439 |
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440 def callback(hwnd, pid): |
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441 wpid = _DWORD() |
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442 _user32.GetWindowThreadProcessId(hwnd, ctypes.byref(wpid)) |
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443 if pid == wpid.value: |
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444 _user32.ShowWindow(hwnd, _SW_HIDE) |
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445 return False # stop enumerating windows |
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446 return True |
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447 |
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448 pid = _kernel32.GetCurrentProcessId() |
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449 _user32.EnumWindows(_WNDENUMPROC(callback), pid) |
11012
81631f0cf13b
win32: detect console width on Windows
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|
450 |
30314
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451 def termsize(): |
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452 # cmd.exe does not handle CR like a unix console, the CR is |
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453 # counted in the line length. On 80 columns consoles, if 80 |
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454 # characters are written, the following CR won't apply on the |
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455 # current line but on the new one. Keep room for it. |
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392633d7860e
scmutil: clarify that we explicitly do termwidth - 1 on Windows
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456 width = 80 - 1 |
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457 height = 25 |
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458 # Query stderr to avoid problems with redirections |
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459 screenbuf = _kernel32.GetStdHandle( |
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460 _STD_ERROR_HANDLE) # don't close the handle returned |
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461 if screenbuf is None or screenbuf == _INVALID_HANDLE_VALUE: |
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462 return width, height |
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463 csbi = _CONSOLE_SCREEN_BUFFER_INFO() |
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464 if not _kernel32.GetConsoleScreenBufferInfo( |
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465 screenbuf, ctypes.byref(csbi)): |
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466 return width, height |
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467 width = csbi.srWindow.Right - csbi.srWindow.Left # don't '+ 1' |
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|
468 height = csbi.srWindow.Bottom - csbi.srWindow.Top + 1 |
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|
469 return width, height |
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changeset
|
470 |
32664
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win32: add a method to enable ANSI color code processing on Windows 10
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|
471 def enablevtmode(): |
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|
472 '''Enable virtual terminal mode for the associated console. Return True if |
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|
473 enabled, else False.''' |
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|
474 |
2d56e6d23be7
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|
475 ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x4 |
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|
476 |
2d56e6d23be7
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|
477 handle = _kernel32.GetStdHandle(_STD_OUTPUT_HANDLE) # don't close the handle |
2d56e6d23be7
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|
478 if handle == _INVALID_HANDLE_VALUE: |
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479 return False |
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|
480 |
2d56e6d23be7
win32: add a method to enable ANSI color code processing on Windows 10
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|
481 mode = _DWORD(0) |
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changeset
|
482 |
2d56e6d23be7
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|
483 if not _kernel32.GetConsoleMode(handle, ctypes.byref(mode)): |
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|
484 return False |
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parents:
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diff
changeset
|
485 |
2d56e6d23be7
win32: add a method to enable ANSI color code processing on Windows 10
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changeset
|
486 if (mode.value & ENABLE_VIRTUAL_TERMINAL_PROCESSING) == 0: |
2d56e6d23be7
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|
487 mode.value |= ENABLE_VIRTUAL_TERMINAL_PROCESSING |
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parents:
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diff
changeset
|
488 |
2d56e6d23be7
win32: add a method to enable ANSI color code processing on Windows 10
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parents:
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changeset
|
489 if not _kernel32.SetConsoleMode(handle, mode): |
2d56e6d23be7
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|
490 return False |
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parents:
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diff
changeset
|
491 |
2d56e6d23be7
win32: add a method to enable ANSI color code processing on Windows 10
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changeset
|
492 return True |
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changeset
|
493 |
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|
494 def spawndetached(args): |
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|
495 # No standard library function really spawns a fully detached |
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|
496 # process under win32 because they allocate pipes or other objects |
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|
497 # to handle standard streams communications. Passing these objects |
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changeset
|
498 # to the child process requires handle inheritance to be enabled |
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changeset
|
499 # which makes really detached processes impossible. |
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|
500 si = _STARTUPINFO() |
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changeset
|
501 si.cb = ctypes.sizeof(_STARTUPINFO) |
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|
502 |
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|
503 pi = _PROCESS_INFORMATION() |
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|
504 |
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changeset
|
505 env = '' |
30637
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py3: replace os.environ with encoding.environ (part 4 of 5)
Pulkit Goyal <7895pulkit@gmail.com>
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changeset
|
506 for k in encoding.environ: |
344e68882cd3
py3: replace os.environ with encoding.environ (part 4 of 5)
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|
507 env += "%s=%s\0" % (k, encoding.environ[k]) |
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|
508 if not env: |
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509 env = '\0' |
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|
510 env += '\0' |
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changeset
|
511 |
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changeset
|
512 args = subprocess.list2cmdline(args) |
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changeset
|
513 |
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changeset
|
514 res = _kernel32.CreateProcessA( |
17050
e780fb37168b
win32: specify _CREATE_NO_WINDOW on spawndetached()
Adrian Buehlmann <adrian@cadifra.com>
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diff
changeset
|
515 None, args, None, None, False, _CREATE_NO_WINDOW, |
30667
5861bdbeb9a3
py3: use pycompat.getcwd instead of os.getcwd
Pulkit Goyal <7895pulkit@gmail.com>
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changeset
|
516 env, pycompat.getcwd(), ctypes.byref(si), ctypes.byref(pi)) |
13375
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changeset
|
517 if not res: |
24418
a2285e2fc949
win32: 'raise ctypes.WinError' -> 'raise ctypes.WinError()'
Matt Harbison <matt_harbison@yahoo.com>
parents:
21226
diff
changeset
|
518 raise ctypes.WinError() |
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changeset
|
519 |
32676
4c3d9ee87382
win32: drop a py26 daemonizing hack
Matt Harbison <matt_harbison@yahoo.com>
parents:
32664
diff
changeset
|
520 return pi.dwProcessId |
13775
930efdc6bfa4
windows: move unlink to win32.py
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changeset
|
521 |
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changeset
|
522 def unlink(f): |
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changeset
|
523 '''try to implement POSIX' unlink semantics on Windows''' |
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changeset
|
524 |
21226
4898c37e03c0
win32: backout 1a9ebc83a74c
Steve Borho <steve@borho.org>
parents:
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diff
changeset
|
525 if os.path.isdir(f): |
4898c37e03c0
win32: backout 1a9ebc83a74c
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diff
changeset
|
526 # use EPERM because it is POSIX prescribed value, even though |
4898c37e03c0
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parents:
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changeset
|
527 # unlink(2) on directories returns EISDIR on Linux |
4898c37e03c0
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Steve Borho <steve@borho.org>
parents:
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changeset
|
528 raise IOError(errno.EPERM, |
4898c37e03c0
win32: backout 1a9ebc83a74c
Steve Borho <steve@borho.org>
parents:
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diff
changeset
|
529 "Unlinking directory not permitted: '%s'" % f) |
19159
1b329f8c7b24
windows: check target type before actual unlinking to follow POSIX semantics
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18959
diff
changeset
|
530 |
13775
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changeset
|
531 # POSIX allows to unlink and rename open files. Windows has serious |
930efdc6bfa4
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changeset
|
532 # problems with doing that: |
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changeset
|
533 # - Calling os.unlink (or os.rename) on a file f fails if f or any |
930efdc6bfa4
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changeset
|
534 # hardlinked copy of f has been opened with Python's open(). There is no |
930efdc6bfa4
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changeset
|
535 # way such a file can be deleted or renamed on Windows (other than |
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changeset
|
536 # scheduling the delete or rename for the next reboot). |
930efdc6bfa4
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changeset
|
537 # - Calling os.unlink on a file that has been opened with Mercurial's |
930efdc6bfa4
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parents:
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changeset
|
538 # posixfile (or comparable methods) will delay the actual deletion of |
930efdc6bfa4
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changeset
|
539 # the file for as long as the file is held open. The filename is blocked |
930efdc6bfa4
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changeset
|
540 # during that time and cannot be used for recreating a new file under |
930efdc6bfa4
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parents:
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diff
changeset
|
541 # that same name ("zombie file"). Directories containing such zombie files |
930efdc6bfa4
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Adrian Buehlmann <adrian@cadifra.com>
parents:
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diff
changeset
|
542 # cannot be removed or moved. |
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543 # A file that has been opened with posixfile can be renamed, so we rename |
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544 # f to a random temporary name before calling os.unlink on it. This allows |
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545 # callers to recreate f immediately while having other readers do their |
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546 # implicit zombie filename blocking on a temporary name. |
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547 |
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548 for tries in xrange(10): |
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549 temp = '%s-%08x' % (f, random.randint(0, 0xffffffff)) |
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550 try: |
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551 os.rename(f, temp) # raises OSError EEXIST if temp exists |
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552 break |
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553 except OSError as e: |
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554 if e.errno != errno.EEXIST: |
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555 raise |
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556 else: |
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557 raise IOError(errno.EEXIST, "No usable temporary filename found") |
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558 |
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559 try: |
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560 os.unlink(temp) |
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561 except OSError: |
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562 # The unlink might have failed because the READONLY attribute may heave |
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563 # been set on the original file. Rename works fine with READONLY set, |
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564 # but not os.unlink. Reset all attributes and try again. |
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565 _kernel32.SetFileAttributesA(temp, _FILE_ATTRIBUTE_NORMAL) |
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566 try: |
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567 os.unlink(temp) |
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568 except OSError: |
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569 # The unlink might have failed due to some very rude AV-Scanners. |
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570 # Leaking a tempfile is the lesser evil than aborting here and |
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571 # leaving some potentially serious inconsistencies. |
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572 pass |
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573 |
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574 def makedir(path, notindexed): |
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575 os.mkdir(path) |
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576 if notindexed: |
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577 _kernel32.SetFileAttributesA(path, _FILE_ATTRIBUTE_NOT_CONTENT_INDEXED) |