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1 # -*- coding: utf-8 -*-
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2 #
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3 # EasyMercurial
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4 #
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5 # Based on hgExplorer by Jari Korhonen
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6 # Copyright (c) 2010 Jari Korhonen
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7 # Copyright (c) 2010 Chris Cannam
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8 # Copyright (c) 2010 Queen Mary, University of London
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9 #
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10 # This program is free software; you can redistribute it and/or
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11 # modify it under the terms of the GNU General Public License as
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12 # published by the Free Software Foundation; either version 2 of the
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13 # License, or (at your option) any later version. See the file
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14 # COPYING included with this distribution for more information.
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15
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16 import sys, os, stat, urllib, urllib2, urlparse
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17
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18 from mercurial.i18n import _
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19 from mercurial import ui, util, error
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20 try:
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21 from mercurial.url import passwordmgr
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22 except:
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23 from mercurial.httprepo import passwordmgr
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24
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25 # The value assigned here may be modified during installation, by
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26 # replacing its default value with another one. We can't compare
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27 # against its default value, because then the comparison text would
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28 # get modified as well. So, compare using prefix only.
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29 #
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30 easyhg_import_path = 'NO_EASYHG_IMPORT_PATH'
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31 if not easyhg_import_path.startswith('NO_'):
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32 # We have an installation path: append it twice, once with
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33 # the Python version suffixed
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34 version_suffix = "Py" + str(sys.version_info[0]) + "." + str(sys.version_info[1]);
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35 sys.path.append(easyhg_import_path + "/" + version_suffix)
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36 sys.path.append(easyhg_import_path)
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37
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38 # Try to load the PyQt4 module that we need. If this fails, we should
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39 # bail out later (in uisetup), because if we bail out now, Mercurial
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40 # will just continue without us and report success. The invoking
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41 # application needs to be able to discover whether the module load
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42 # succeeded or not, so we need to ensure that Mercurial itself returns
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43 # failure if it didn't.
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44 #
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45 easyhg_pyqt_ok = True
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46 try:
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47 from PyQt4 import Qt, QtGui
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48 except ImportError:
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49 easyhg_pyqt_ok = False
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50 easyhg_qtapp = None
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51
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52 # These imports are optional, we just can't use the authfile (=
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53 # "remember this password") feature without them
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54 #
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55 easyhg_authfile_imports_ok = True
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56 try:
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57 from Crypto.Cipher import AES
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58 import ConfigParser # Mercurial version won't write files
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59 import base64
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60 except ImportError:
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61 easyhg_authfile_imports_ok = False
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62
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63 #!!! should be in a class here
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64
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65 def encrypt(text, key):
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66 text = '%d.%s' % (len(text), text)
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67 text += (16 - len(text) % 16) * ' '
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68 cipher = AES.new(key)
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69 return base64.b64encode(cipher.encrypt(text))
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70
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71 def decrypt(ctext, key):
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72 cipher = AES.new(key)
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73 text = cipher.decrypt(base64.b64decode(ctext))
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74 (tlen, d, text) = text.partition('.')
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75 return text[0:int(tlen)]
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76
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77 def monkeypatch_method(cls):
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78 def decorator(func):
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79 setattr(cls, func.__name__, func)
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80 return func
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81 return decorator
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82
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83 def uisetup(ui):
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84 if not easyhg_pyqt_ok:
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85 raise util.Abort(_('Failed to load PyQt4 module required by easyhg.py'))
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86 global easyhg_qtapp
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87 easyhg_qtapp = QtGui.QApplication([])
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88
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89 orig_find = passwordmgr.find_user_password
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90
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91 # from mercurial_keyring by Marcin Kasperski
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92 def canonical_url(authuri):
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93 """
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94 Strips query params from url. Used to convert urls like
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95 https://repo.machine.com/repos/apps/module?pairs=0000000000000000000000000000000000000000-0000000000000000000000000000000000000000&cmd=between
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96 to
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97 https://repo.machine.com/repos/apps/module
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98 """
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99 parsed_url = urlparse.urlparse(authuri)
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100 return "%s://%s%s" % (parsed_url.scheme, parsed_url.netloc,
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101 parsed_url.path)
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102
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103 def load_config(pcfg, pfile):
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104 fp = None
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105 try:
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106 fp = open(pfile)
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107 except:
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108 pass
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109 if fp:
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110 pcfg.readfp(fp)
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111 fp.close()
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112
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113 def save_config(pcfg, pfile):
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114 ofp = None
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115 try:
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116 ofp = open(pfile, 'w')
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117 except:
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118 self.ui.write("failed to open authfile %s for writing\n" % pfile)
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119 raise
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120 try:
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121 #!!! Windows equivalent?
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122 os.fchmod(ofp.fileno(), stat.S_IRUSR | stat.S_IWUSR)
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123 except:
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124 ofp.close()
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125 ofp = None
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126 self.ui.write("failed to set permissions on authfile %s\n" % pfile)
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127 raise
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128 pcfg.write(ofp)
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129 ofp.close()
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130
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131 def get_from_config(pcfg, sect, key):
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132 data = None
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133 try:
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134 data = pcfg.get(sect, key)
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135 except (ConfigParser.NoOptionError, ConfigParser.NoSectionError):
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136 pass
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137 return data
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138
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139 def get_boolean_from_config(pcfg, sect, key, deflt):
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140 data = deflt
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141 try:
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142 data = pcfg.getboolean(sect, key)
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143 except (ConfigParser.NoOptionError, ConfigParser.NoSectionError):
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144 pass
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145 return data
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146
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147 def set_to_config(pcfg, sect, key, data):
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148 if not pcfg.has_section(sect):
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149 pcfg.add_section(sect)
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150 pcfg.set(sect, key, data)
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151
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152 def remote_key(uri, user):
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153 return base64.b64encode('%s@@%s' % (uri, user)).replace('=', '_')
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154
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155 @monkeypatch_method(passwordmgr)
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156 def find_user_password(self, realm, authuri):
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157
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158 if not self.ui.interactive():
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159 return orig_find(self, realm, authuri)
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160 if not easyhg_pyqt_ok:
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161 return orig_find(self, realm, authuri)
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162
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163 authinfo = urllib2.HTTPPasswordMgrWithDefaultRealm.find_user_password(
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164 self, realm, authuri)
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165 user, passwd = authinfo
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166
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167 if user and passwd:
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168 return orig_find(self, realm, authuri)
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169
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170 self.ui.write("want username and/or password for %s\n" % authuri)
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171
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172 uri = canonical_url(authuri)
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173
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174 pekey = self.ui.config('easyhg', 'authkey')
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175 pfile = self.ui.config('easyhg', 'authfile')
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176 use_authfile = (easyhg_authfile_imports_ok and pekey and pfile)
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177 if pfile:
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178 pfile = os.path.expanduser(pfile)
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179 pdata = None
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180
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181 self.ui.write("pekey is %s\n" % pekey)
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182 self.ui.write("pfile is %s\n" % pfile)
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183
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184 dialog = QtGui.QDialog()
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185 layout = QtGui.QGridLayout()
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186 dialog.setLayout(layout)
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187
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188 layout.addWidget(QtGui.QLabel(_('<h3>Login required</h3><p>Please provide your login details for the repository at<br><code>%s</code>:') % uri), 0, 0, 1, 2)
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189
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190 userfield = QtGui.QLineEdit()
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191 if user:
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192 userfield.setText(user)
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193 layout.addWidget(QtGui.QLabel(_('User:')), 1, 0)
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194 layout.addWidget(userfield, 1, 1)
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195
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196 passfield = QtGui.QLineEdit()
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197 passfield.setEchoMode(QtGui.QLineEdit.Password)
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198 if passwd:
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199 passfield.setText(passwd)
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200 layout.addWidget(QtGui.QLabel(_('Password:')), 2, 0)
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201 layout.addWidget(passfield, 2, 1)
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202
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203 userfield.connect(userfield, Qt.SIGNAL("textChanged(QString)"), passfield, Qt.SLOT("clear()"))
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204
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205 remember = None
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206 pcfg = None
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207
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208 if use_authfile:
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209 # load pwd from our cache file, decrypt with given key
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210 pcfg = ConfigParser.RawConfigParser()
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211 load_config(pcfg, pfile)
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212 remember_default = get_boolean_from_config(pcfg, 'preferences', 'remember', False)
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213 pdata = get_from_config(pcfg, 'auth', remote_key(uri, user))
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214 if pdata:
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215 cachedpwd = decrypt(pdata, pekey)
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216 passfield.setText(cachedpwd)
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217 remember = QtGui.QCheckBox()
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218 remember.setChecked(remember_default)
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219 remember.setText(_('Remember this password until EasyMercurial exits'))
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220 layout.addWidget(remember, 3, 1)
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221
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222 bb = QtGui.QDialogButtonBox()
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223 ok = bb.addButton(bb.Ok)
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224 cancel = bb.addButton(bb.Cancel)
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225 cancel.setDefault(False)
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226 cancel.setAutoDefault(False)
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227 ok.setDefault(True)
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228 bb.connect(ok, Qt.SIGNAL("clicked()"), dialog, Qt.SLOT("accept()"))
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229 bb.connect(cancel, Qt.SIGNAL("clicked()"), dialog, Qt.SLOT("reject()"))
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230 layout.addWidget(bb, 4, 0, 1, 2)
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231
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232 dialog.setWindowTitle(_('EasyMercurial: Login'))
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233 dialog.show()
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234
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235 if not user:
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236 userfield.setFocus(True)
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237 elif not passwd:
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238 passfield.setFocus(True)
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239
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240 dialog.raise_()
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241 ok = dialog.exec_()
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242 if not ok:
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243 raise util.Abort(_('password entry cancelled'))
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244
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245 self.ui.write('Dialog accepted\n')
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246 user = userfield.text()
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247 passwd = passfield.text()
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248
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249 if use_authfile:
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250 set_to_config(pcfg, 'preferences', 'remember', remember.isChecked())
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251 if user:
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252 if passwd and remember.isChecked():
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253 pdata = encrypt(passwd, pekey)
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254 set_to_config(pcfg, 'auth', remote_key(uri, user), pdata)
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255 else:
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256 set_to_config(pcfg, 'auth', remote_key(uri, user), '')
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257 save_config(pcfg, pfile)
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258
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259 self.add_password(realm, authuri, user, passwd)
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260 return (user, passwd)
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261
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262
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