hgext/gpg.py
author Nicolas Dumazet <nicdumz.commits@gmail.com>
Mon, 21 Sep 2009 19:21:32 +0200
changeset 9632 16698d87ad20
parent 9183 d0225fa2f6c4
child 10263 25e572394f5c
permissions -rw-r--r--
util: use sys.argv[0] if $HG is unset and 'hg' is not in PATH This is necessary when the executable name is not 'hg'. For example, if your system-wide mercurial is name 'hgs', sys.argv[0] is more accurate than 'hg'.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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# Copyright 2005, 2006 Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2, incorporated herein by reference.
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'''commands to sign and verify changesets'''
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import os, tempfile, binascii
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from mercurial import util, commands, match
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from mercurial import node as hgnode
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from mercurial.i18n import _
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class gpg(object):
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    def __init__(self, path, key=None):
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        self.path = path
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        self.key = (key and " --local-user \"%s\"" % key) or ""
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    def sign(self, data):
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        gpgcmd = "%s --sign --detach-sign%s" % (self.path, self.key)
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        return util.filter(data, gpgcmd)
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    def verify(self, data, sig):
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        """ returns of the good and bad signatures"""
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        sigfile = datafile = None
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        try:
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            # create temporary files
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            fd, sigfile = tempfile.mkstemp(prefix="hg-gpg-", suffix=".sig")
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            fp = os.fdopen(fd, 'wb')
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            fp.write(sig)
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            fp.close()
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            fd, datafile = tempfile.mkstemp(prefix="hg-gpg-", suffix=".txt")
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            fp = os.fdopen(fd, 'wb')
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            fp.write(data)
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            fp.close()
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            gpgcmd = ("%s --logger-fd 1 --status-fd 1 --verify "
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                      "\"%s\" \"%s\"" % (self.path, sigfile, datafile))
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            ret = util.filter("", gpgcmd)
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        finally:
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            for f in (sigfile, datafile):
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                try:
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                    if f: os.unlink(f)
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                except: pass
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        keys = []
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        key, fingerprint = None, None
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        err = ""
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        for l in ret.splitlines():
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            # see DETAILS in the gnupg documentation
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            # filter the logger output
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            if not l.startswith("[GNUPG:]"):
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                continue
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            l = l[9:]
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            if l.startswith("ERRSIG"):
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                err = _("error while verifying signature")
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                break
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            elif l.startswith("VALIDSIG"):
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                # fingerprint of the primary key
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                fingerprint = l.split()[10]
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            elif (l.startswith("GOODSIG") or
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                  l.startswith("EXPSIG") or
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                  l.startswith("EXPKEYSIG") or
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                  l.startswith("BADSIG")):
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                if key is not None:
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                    keys.append(key + [fingerprint])
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                key = l.split(" ", 2)
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                fingerprint = None
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        if err:
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            return err, []
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        if key is not None:
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            keys.append(key + [fingerprint])
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        return err, keys
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def newgpg(ui, **opts):
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    """create a new gpg instance"""
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    gpgpath = ui.config("gpg", "cmd", "gpg")
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    gpgkey = opts.get('key')
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    if not gpgkey:
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        gpgkey = ui.config("gpg", "key", None)
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    return gpg(gpgpath, gpgkey)
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def sigwalk(repo):
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    """
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    walk over every sigs, yields a couple
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    ((node, version, sig), (filename, linenumber))
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    """
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    def parsefile(fileiter, context):
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        ln = 1
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        for l in fileiter:
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            if not l:
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                continue
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            yield (l.split(" ", 2), (context, ln))
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            ln +=1
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    # read the heads
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    fl = repo.file(".hgsigs")
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    for r in reversed(fl.heads()):
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        fn = ".hgsigs|%s" % hgnode.short(r)
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        for item in parsefile(fl.read(r).splitlines(), fn):
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            yield item
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    try:
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        # read local signatures
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        fn = "localsigs"
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        for item in parsefile(repo.opener(fn), fn):
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            yield item
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    except IOError:
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        pass
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def getkeys(ui, repo, mygpg, sigdata, context):
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    """get the keys who signed a data"""
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    fn, ln = context
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    node, version, sig = sigdata
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    prefix = "%s:%d" % (fn, ln)
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    node = hgnode.bin(node)
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    data = node2txt(repo, node, version)
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    sig = binascii.a2b_base64(sig)
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    err, keys = mygpg.verify(data, sig)
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    if err:
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        ui.warn("%s:%d %s\n" % (fn, ln , err))
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        return None
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    validkeys = []
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diff changeset
   122
    # warn for expired key and/or sigs
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diff changeset
   123
    for key in keys:
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parents: 1676
diff changeset
   124
        if key[0] == "BADSIG":
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parents: 1676
diff changeset
   125
            ui.write(_("%s Bad signature from \"%s\"\n") % (prefix, key[2]))
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parents: 1676
diff changeset
   126
            continue
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parents: 1676
diff changeset
   127
        if key[0] == "EXPSIG":
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   128
            ui.write(_("%s Note: Signature has expired"
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parents: 1676
diff changeset
   129
                       " (signed by: \"%s\")\n") % (prefix, key[2]))
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parents: 1676
diff changeset
   130
        elif key[0] == "EXPKEYSIG":
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   131
            ui.write(_("%s Note: This key has expired"
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parents: 1676
diff changeset
   132
                       " (signed by: \"%s\")\n") % (prefix, key[2]))
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parents: 1676
diff changeset
   133
        validkeys.append((key[1], key[2], key[3]))
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parents: 1676
diff changeset
   134
    return validkeys
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diff changeset
   135
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diff changeset
   136
def sigs(ui, repo):
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diff changeset
   137
    """list signed changesets"""
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   138
    mygpg = newgpg(ui)
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diff changeset
   139
    revs = {}
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parents: 1676
diff changeset
   140
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parents: 1676
diff changeset
   141
    for data, context in sigwalk(repo):
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parents: 1676
diff changeset
   142
        node, version, sig = data
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   143
        fn, ln = context
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   144
        try:
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parents: 1676
diff changeset
   145
            n = repo.lookup(node)
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   146
        except KeyError:
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   147
            ui.warn(_("%s:%d node does not exist\n") % (fn, ln))
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diff changeset
   148
            continue
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   149
        r = repo.changelog.rev(n)
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   150
        keys = getkeys(ui, repo, mygpg, data, context)
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parents: 1676
diff changeset
   151
        if not keys:
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parents: 1676
diff changeset
   152
            continue
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   153
        revs.setdefault(r, [])
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parents: 1676
diff changeset
   154
        revs[r].extend(keys)
8303
db52cc4f2f97 gpg: use reverse kwarg to sort sigs in reversed order
Martin Geisler <mg@lazybytes.net>
parents: 8301
diff changeset
   155
    for rev in sorted(revs, reverse=True):
1682
ca1cda9220d5 fix an exception in gpg.py with multiples sigs for the same cset
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1681
diff changeset
   156
        for k in revs[rev]:
ca1cda9220d5 fix an exception in gpg.py with multiples sigs for the same cset
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1681
diff changeset
   157
            r = "%5d:%s" % (rev, hgnode.hex(repo.changelog.node(rev)))
1681
98eef041f9c7 fixes for gpg.py extension
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1676
diff changeset
   158
            ui.write("%-30s %s\n" % (keystr(ui, k), r))
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parents: 1676
diff changeset
   159
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parents:
diff changeset
   160
def check(ui, repo, rev):
347c44611348 gpg signing extension for hg
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parents:
diff changeset
   161
    """verify all the signatures there may be for a particular revision"""
347c44611348 gpg signing extension for hg
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parents:
diff changeset
   162
    mygpg = newgpg(ui)
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parents:
diff changeset
   163
    rev = repo.lookup(rev)
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   164
    hexrev = hgnode.hex(rev)
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   165
    keys = []
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parents:
diff changeset
   166
1681
98eef041f9c7 fixes for gpg.py extension
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1676
diff changeset
   167
    for data, context in sigwalk(repo):
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   168
        node, version, sig = data
98eef041f9c7 fixes for gpg.py extension
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1676
diff changeset
   169
        if node == hexrev:
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   170
            k = getkeys(ui, repo, mygpg, data, context)
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   171
            if k:
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   172
                keys.extend(k)
1592
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   173
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   174
    if not keys:
1681
98eef041f9c7 fixes for gpg.py extension
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1676
diff changeset
   175
        ui.write(_("No valid signature for %s\n") % hgnode.short(rev))
1592
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   176
        return
1681
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   177
1592
347c44611348 gpg signing extension for hg
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parents:
diff changeset
   178
    # print summary
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   179
    ui.write("%s is signed by:\n" % hgnode.short(rev))
1681
98eef041f9c7 fixes for gpg.py extension
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1676
diff changeset
   180
    for key in keys:
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   181
        ui.write(" %s\n" % keystr(ui, key))
1592
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parents:
diff changeset
   182
1681
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   183
def keystr(ui, key):
98eef041f9c7 fixes for gpg.py extension
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1676
diff changeset
   184
    """associate a string to a key (username, comment)"""
98eef041f9c7 fixes for gpg.py extension
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1676
diff changeset
   185
    keyid, user, fingerprint = key
98eef041f9c7 fixes for gpg.py extension
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1676
diff changeset
   186
    comment = ui.config("gpg", fingerprint, None)
98eef041f9c7 fixes for gpg.py extension
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1676
diff changeset
   187
    if comment:
98eef041f9c7 fixes for gpg.py extension
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1676
diff changeset
   188
        return "%s (%s)" % (user, comment)
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   189
    else:
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parents: 1676
diff changeset
   190
        return user
1592
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   191
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   192
def sign(ui, repo, *revs, **opts):
3916
b1806b211910 Make 'hg sign' behave like other commands: Default to current parent.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 2875
diff changeset
   193
    """add a signature for the current or given revision
b1806b211910 Make 'hg sign' behave like other commands: Default to current parent.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 2875
diff changeset
   194
b1806b211910 Make 'hg sign' behave like other commands: Default to current parent.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 2875
diff changeset
   195
    If no revision is given, the parent of the working directory is used,
b1806b211910 Make 'hg sign' behave like other commands: Default to current parent.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 2875
diff changeset
   196
    or tip if no revision is checked out.
6163
1f733c2f0165 Document log date ranges and mention 'hg help dates' for all commands (issue998)
Thomas Arendsen Hein <thomas@intevation.de>
parents: 6139
diff changeset
   197
1f733c2f0165 Document log date ranges and mention 'hg help dates' for all commands (issue998)
Thomas Arendsen Hein <thomas@intevation.de>
parents: 6139
diff changeset
   198
    See 'hg help dates' for a list of formats valid for -d/--date.
3916
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parents: 2875
diff changeset
   199
    """
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Thomas Arendsen Hein <thomas@intevation.de>
parents: 2875
diff changeset
   200
1592
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   201
    mygpg = newgpg(ui, **opts)
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   202
    sigver = "0"
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   203
    sigmessage = ""
6139
989467e8e3a9 Fix bad behaviour when specifying an invalid date (issue700)
Thomas Arendsen Hein <thomas@intevation.de>
parents: 5475
diff changeset
   204
989467e8e3a9 Fix bad behaviour when specifying an invalid date (issue700)
Thomas Arendsen Hein <thomas@intevation.de>
parents: 5475
diff changeset
   205
    date = opts.get('date')
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Thomas Arendsen Hein <thomas@intevation.de>
parents: 5475
diff changeset
   206
    if date:
989467e8e3a9 Fix bad behaviour when specifying an invalid date (issue700)
Thomas Arendsen Hein <thomas@intevation.de>
parents: 5475
diff changeset
   207
        opts['date'] = util.parsedate(date)
989467e8e3a9 Fix bad behaviour when specifying an invalid date (issue700)
Thomas Arendsen Hein <thomas@intevation.de>
parents: 5475
diff changeset
   208
1592
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   209
    if revs:
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   210
        nodes = [repo.lookup(n) for n in revs]
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   211
    else:
3916
b1806b211910 Make 'hg sign' behave like other commands: Default to current parent.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 2875
diff changeset
   212
        nodes = [node for node in repo.dirstate.parents()
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parents: 2875
diff changeset
   213
                 if node != hgnode.nullid]
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Thomas Arendsen Hein <thomas@intevation.de>
parents: 2875
diff changeset
   214
        if len(nodes) > 1:
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Thomas Arendsen Hein <thomas@intevation.de>
parents: 2875
diff changeset
   215
            raise util.Abort(_('uncommitted merge - please provide a '
b1806b211910 Make 'hg sign' behave like other commands: Default to current parent.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 2875
diff changeset
   216
                               'specific revision'))
b1806b211910 Make 'hg sign' behave like other commands: Default to current parent.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 2875
diff changeset
   217
        if not nodes:
b1806b211910 Make 'hg sign' behave like other commands: Default to current parent.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 2875
diff changeset
   218
            nodes = [repo.changelog.tip()]
1592
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   219
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   220
    for n in nodes:
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   221
        hexnode = hgnode.hex(n)
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   222
        ui.write("Signing %d:%s\n" % (repo.changelog.rev(n),
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   223
                                      hgnode.short(n)))
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   224
        # build data
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   225
        data = node2txt(repo, n, sigver)
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   226
        sig = mygpg.sign(data)
347c44611348 gpg signing extension for hg
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parents:
diff changeset
   227
        if not sig:
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parents: 1676
diff changeset
   228
            raise util.Abort(_("Error while signing"))
1592
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parents:
diff changeset
   229
        sig = binascii.b2a_base64(sig)
347c44611348 gpg signing extension for hg
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parents:
diff changeset
   230
        sig = sig.replace("\n", "")
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   231
        sigmessage += "%s %s %s\n" % (hexnode, sigver, sig)
347c44611348 gpg signing extension for hg
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parents:
diff changeset
   232
347c44611348 gpg signing extension for hg
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parents:
diff changeset
   233
    # write it
347c44611348 gpg signing extension for hg
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parents:
diff changeset
   234
    if opts['local']:
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   235
        repo.opener("localsigs", "ab").write(sigmessage)
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   236
        return
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   237
6760
4faaa0535ea7 status: clean up all users for unknown files
Matt Mackall <mpm@selenic.com>
parents: 6163
diff changeset
   238
    for x in repo.status(unknown=True)[:5]:
1592
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
   239
        if ".hgsigs" in x and not opts["force"]:
1681
98eef041f9c7 fixes for gpg.py extension
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parents: 1676
diff changeset
   240
            raise util.Abort(_("working copy of .hgsigs is changed "
98eef041f9c7 fixes for gpg.py extension
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1676
diff changeset
   241
                               "(please commit .hgsigs manually "
98eef041f9c7 fixes for gpg.py extension
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1676
diff changeset
   242
                               "or use --force)"))
1592
347c44611348 gpg signing extension for hg
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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    repo.wfile(".hgsigs", "ab").write(sigmessage)
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    if '.hgsigs' not in repo.dirstate:
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        repo.add([".hgsigs"])
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    if opts["no_commit"]:
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        return
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    message = opts['message']
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    if not message:
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        # we don't translate commit messages
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        message = "\n".join(["Added signature for changeset %s"
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                             % hgnode.short(n)
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                             for n in nodes])
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    try:
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        m = match.exact(repo.root, '', ['.hgsigs'])
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        repo.commit(message, opts['user'], opts['date'], match=m)
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    except ValueError, inst:
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        raise util.Abort(str(inst))
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def node2txt(repo, node, ver):
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    """map a manifest into some text"""
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    if ver == "0":
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        return "%s\n" % hgnode.hex(node)
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    else:
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        raise util.Abort(_("unknown signature version"))
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cmdtable = {
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    "sign":
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        (sign,
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         [('l', 'local', None, _('make the signature local')),
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          ('f', 'force', None, _('sign even if the sigfile is modified')),
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          ('', 'no-commit', None, _('do not commit the sigfile after signing')),
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          ('k', 'key', '', _('the key id to sign with')),
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          ('m', 'message', '', _('commit message')),
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         ] + commands.commitopts2,
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         _('hg sign [OPTION]... [REVISION]...')),
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    "sigcheck": (check, [], _('hg sigcheck REVISION')),
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    "sigs": (sigs, [], _('hg sigs')),
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}
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