Mercurial > hg
annotate mercurial/pathutil.py @ 24987:fd7287f0b43c
templater: remove noop calls of parsestring(s, quoted=False) (API)
Since db7463aa080f, parsestring(s, quoted=False) just returns s.
author | Yuya Nishihara <yuya@tcha.org> |
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date | Mon, 04 May 2015 10:01:03 +0900 |
parents | a4679a74df14 |
children | 7d6a507a4c53 |
rev | line source |
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1 import os, errno, stat |
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2 |
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3 import encoding |
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4 import util |
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5 from i18n import _ |
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6 |
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7 def _lowerclean(s): |
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8 return encoding.hfsignoreclean(s.lower()) |
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9 |
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10 class pathauditor(object): |
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11 '''ensure that a filesystem path contains no banned components. |
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12 the following properties of a path are checked: |
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13 |
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14 - ends with a directory separator |
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15 - under top-level .hg |
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16 - starts at the root of a windows drive |
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17 - contains ".." |
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18 - traverses a symlink (e.g. a/symlink_here/b) |
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19 - inside a nested repository (a callback can be used to approve |
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20 some nested repositories, e.g., subrepositories) |
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21 ''' |
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22 |
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23 def __init__(self, root, callback=None): |
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24 self.audited = set() |
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25 self.auditeddir = set() |
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26 self.root = root |
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27 self.callback = callback |
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28 if os.path.lexists(root) and not util.checkcase(root): |
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29 self.normcase = util.normcase |
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30 else: |
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31 self.normcase = lambda x: x |
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32 |
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33 def __call__(self, path): |
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34 '''Check the relative path. |
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35 path may contain a pattern (e.g. foodir/**.txt)''' |
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36 |
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37 path = util.localpath(path) |
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38 normpath = self.normcase(path) |
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39 if normpath in self.audited: |
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40 return |
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41 # AIX ignores "/" at end of path, others raise EISDIR. |
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42 if util.endswithsep(path): |
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43 raise util.Abort(_("path ends in directory separator: %s") % path) |
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44 parts = util.splitpath(path) |
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45 if (os.path.splitdrive(path)[0] |
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46 or _lowerclean(parts[0]) in ('.hg', '.hg.', '') |
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47 or os.pardir in parts): |
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48 raise util.Abort(_("path contains illegal component: %s") % path) |
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49 # Windows shortname aliases |
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50 for p in parts: |
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51 if "~" in p: |
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52 first, last = p.split("~", 1) |
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53 if last.isdigit() and first.upper() in ["HG", "HG8B6C"]: |
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54 raise util.Abort(_("path contains illegal component: %s") |
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55 % path) |
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56 if '.hg' in _lowerclean(path): |
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57 lparts = [_lowerclean(p.lower()) for p in parts] |
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58 for p in '.hg', '.hg.': |
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59 if p in lparts[1:]: |
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60 pos = lparts.index(p) |
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61 base = os.path.join(*parts[:pos]) |
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62 raise util.Abort(_("path '%s' is inside nested repo %r") |
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63 % (path, base)) |
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64 |
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65 normparts = util.splitpath(normpath) |
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66 assert len(parts) == len(normparts) |
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67 |
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68 parts.pop() |
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69 normparts.pop() |
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70 prefixes = [] |
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71 while parts: |
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72 prefix = os.sep.join(parts) |
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73 normprefix = os.sep.join(normparts) |
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74 if normprefix in self.auditeddir: |
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75 break |
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76 curpath = os.path.join(self.root, prefix) |
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77 try: |
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78 st = os.lstat(curpath) |
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79 except OSError, err: |
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80 # EINVAL can be raised as invalid path syntax under win32. |
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81 # They must be ignored for patterns can be checked too. |
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82 if err.errno not in (errno.ENOENT, errno.ENOTDIR, errno.EINVAL): |
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83 raise |
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84 else: |
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85 if stat.S_ISLNK(st.st_mode): |
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86 raise util.Abort( |
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87 _('path %r traverses symbolic link %r') |
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88 % (path, prefix)) |
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89 elif (stat.S_ISDIR(st.st_mode) and |
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90 os.path.isdir(os.path.join(curpath, '.hg'))): |
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91 if not self.callback or not self.callback(curpath): |
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92 raise util.Abort(_("path '%s' is inside nested " |
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93 "repo %r") |
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94 % (path, prefix)) |
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95 prefixes.append(normprefix) |
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96 parts.pop() |
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97 normparts.pop() |
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98 |
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99 self.audited.add(normpath) |
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100 # only add prefixes to the cache after checking everything: we don't |
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101 # want to add "foo/bar/baz" before checking if there's a "foo/.hg" |
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102 self.auditeddir.update(prefixes) |
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103 |
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104 def check(self, path): |
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105 try: |
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106 self(path) |
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107 return True |
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108 except (OSError, util.Abort): |
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109 return False |
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110 |
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111 def canonpath(root, cwd, myname, auditor=None): |
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112 '''return the canonical path of myname, given cwd and root''' |
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113 if util.endswithsep(root): |
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114 rootsep = root |
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115 else: |
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116 rootsep = root + os.sep |
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117 name = myname |
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118 if not os.path.isabs(name): |
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119 name = os.path.join(root, cwd, name) |
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120 name = os.path.normpath(name) |
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121 if auditor is None: |
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122 auditor = pathauditor(root) |
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123 if name != rootsep and name.startswith(rootsep): |
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124 name = name[len(rootsep):] |
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125 auditor(name) |
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126 return util.pconvert(name) |
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127 elif name == root: |
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128 return '' |
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129 else: |
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130 # Determine whether `name' is in the hierarchy at or beneath `root', |
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131 # by iterating name=dirname(name) until that causes no change (can't |
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132 # check name == '/', because that doesn't work on windows). The list |
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133 # `rel' holds the reversed list of components making up the relative |
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134 # file name we want. |
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135 rel = [] |
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136 while True: |
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137 try: |
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138 s = util.samefile(name, root) |
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139 except OSError: |
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140 s = False |
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141 if s: |
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142 if not rel: |
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143 # name was actually the same as root (maybe a symlink) |
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144 return '' |
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145 rel.reverse() |
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146 name = os.path.join(*rel) |
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147 auditor(name) |
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148 return util.pconvert(name) |
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149 dirname, basename = util.split(name) |
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150 rel.append(basename) |
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151 if dirname == name: |
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152 break |
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153 name = dirname |
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154 |
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155 raise util.Abort(_("%s not under root '%s'") % (myname, root)) |
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156 |
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157 def normasprefix(path): |
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158 '''normalize the specified path as path prefix |
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159 |
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160 Returned value can be used safely for "p.startswith(prefix)", |
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161 "p[len(prefix):]", and so on. |
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162 |
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163 For efficiency, this expects "path" argument to be already |
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164 normalized by "os.path.normpath", "os.path.realpath", and so on. |
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165 |
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166 See also issue3033 for detail about need of this function. |
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167 |
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168 >>> normasprefix('/foo/bar').replace(os.sep, '/') |
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169 '/foo/bar/' |
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170 >>> normasprefix('/').replace(os.sep, '/') |
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171 '/' |
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172 ''' |
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173 d, p = os.path.splitdrive(path) |
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174 if len(p) != len(os.sep): |
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175 return path + os.sep |
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176 else: |
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177 return path |