Mercurial > hg
annotate hgext/censor.py @ 46604:ad107ed7a4aa
ci: test real dependency installation for pip
In the past, the pip smoke test inhibited actual dependency
installation, but that fails in different environments for setuptools
itself. Since it isn't what we actually want to test (which is pip
install), allow this to call home, if HGTESTS_ALLOW_NETIO=1 is set
in the environment.
Differential Revision: https://phab.mercurial-scm.org/D9950
author | Joerg Sonnenberger <joerg@bec.de> |
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date | Thu, 04 Feb 2021 23:23:35 +0100 |
parents | bec734015b70 |
children | 5105a9975407 |
rev | line source |
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1 # Copyright (C) 2015 - Mike Edgar <adgar@google.com> |
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2 # |
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3 # This extension enables removal of file content at a given revision, |
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4 # rewriting the data/metadata of successive revisions to preserve revision log |
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5 # integrity. |
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6 |
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7 """erase file content at a given revision |
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8 |
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9 The censor command instructs Mercurial to erase all content of a file at a given |
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10 revision *without updating the changeset hash.* This allows existing history to |
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11 remain valid while preventing future clones/pulls from receiving the erased |
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12 data. |
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13 |
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14 Typical uses for censor are due to security or legal requirements, including:: |
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15 |
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16 * Passwords, private keys, cryptographic material |
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17 * Licensed data/code/libraries for which the license has expired |
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18 * Personally Identifiable Information or other private data |
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19 |
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20 Censored nodes can interrupt mercurial's typical operation whenever the excised |
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21 data needs to be materialized. Some commands, like ``hg cat``/``hg revert``, |
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22 simply fail when asked to produce censored data. Others, like ``hg verify`` and |
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23 ``hg update``, must be capable of tolerating censored data to continue to |
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24 function in a meaningful way. Such commands only tolerate censored file |
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25 revisions if they are allowed by the "censor.policy=ignore" config option. |
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26 |
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27 A few informative commands such as ``hg grep`` will unconditionally |
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28 ignore censored data and merely report that it was encountered. |
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29 """ |
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30 |
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31 from __future__ import absolute_import |
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32 |
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33 from mercurial.i18n import _ |
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34 from mercurial.node import short |
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35 |
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36 from mercurial import ( |
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37 error, |
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38 registrar, |
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39 scmutil, |
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40 ) |
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41 |
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42 cmdtable = {} |
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43 command = registrar.command(cmdtable) |
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44 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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45 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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46 # be specifying the version(s) of Mercurial they are tested with, or |
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47 # leave the attribute unspecified. |
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48 testedwith = b'ships-with-hg-core' |
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49 |
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50 |
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51 @command( |
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52 b'censor', |
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53 [ |
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54 ( |
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55 b'r', |
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56 b'rev', |
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57 b'', |
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58 _(b'censor file from specified revision'), |
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59 _(b'REV'), |
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60 ), |
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61 (b't', b'tombstone', b'', _(b'replacement tombstone data'), _(b'TEXT')), |
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62 ], |
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63 _(b'-r REV [-t TEXT] [FILE]'), |
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64 helpcategory=command.CATEGORY_MAINTENANCE, |
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65 ) |
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66 def censor(ui, repo, path, rev=b'', tombstone=b'', **opts): |
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67 with repo.wlock(), repo.lock(): |
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68 return _docensor(ui, repo, path, rev, tombstone, **opts) |
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69 |
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70 |
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71 def _docensor(ui, repo, path, rev=b'', tombstone=b'', **opts): |
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72 if not path: |
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73 raise error.Abort(_(b'must specify file path to censor')) |
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74 if not rev: |
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75 raise error.Abort(_(b'must specify revision to censor')) |
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76 |
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77 wctx = repo[None] |
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78 |
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79 m = scmutil.match(wctx, (path,)) |
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80 if m.anypats() or len(m.files()) != 1: |
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81 raise error.Abort(_(b'can only specify an explicit filename')) |
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82 path = m.files()[0] |
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83 flog = repo.file(path) |
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84 if not len(flog): |
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85 raise error.Abort(_(b'cannot censor file with no history')) |
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86 |
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87 rev = scmutil.revsingle(repo, rev, rev).rev() |
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88 try: |
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89 ctx = repo[rev] |
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90 except KeyError: |
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91 raise error.Abort(_(b'invalid revision identifier %s') % rev) |
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92 |
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93 try: |
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94 fctx = ctx.filectx(path) |
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95 except error.LookupError: |
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96 raise error.Abort(_(b'file does not exist at revision %s') % rev) |
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97 |
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98 fnode = fctx.filenode() |
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99 heads = [] |
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100 for headnode in repo.heads(): |
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101 hc = repo[headnode] |
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102 if path in hc and hc.filenode(path) == fnode: |
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103 heads.append(hc) |
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104 if heads: |
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105 headlist = b', '.join([short(c.node()) for c in heads]) |
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106 raise error.Abort( |
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107 _(b'cannot censor file in heads (%s)') % headlist, |
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108 hint=_(b'clean/delete and commit first'), |
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109 ) |
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110 |
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111 wp = wctx.parents() |
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112 if ctx.node() in [p.node() for p in wp]: |
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113 raise error.Abort( |
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114 _(b'cannot censor working directory'), |
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115 hint=_(b'clean/delete/update first'), |
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116 ) |
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117 |
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118 with repo.transaction(b'censor') as tr: |
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119 flog.censorrevision(tr, fnode, tombstone=tombstone) |