Mercurial > hg
view hgext/gpg.py @ 6868:93b03f1be289
convert: Fix debugging output when running multiple commands with xargs.
author | Thomas Arendsen Hein <thomas@intevation.de> |
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date | Fri, 08 Aug 2008 18:37:50 +0200 |
parents | 1f733c2f0165 |
children | 4faaa0535ea7 |
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# GnuPG signing extension for Mercurial # # Copyright 2005, 2006 Benoit Boissinot <benoit.boissinot@ens-lyon.org> # # This software may be used and distributed according to the terms # of the GNU General Public License, incorporated herein by reference. import os, tempfile, binascii from mercurial import util, commands from mercurial import node as hgnode from mercurial.i18n import _ class gpg: def __init__(self, path, key=None): self.path = path self.key = (key and " --local-user \"%s\"" % key) or "" def sign(self, data): gpgcmd = "%s --sign --detach-sign%s" % (self.path, self.key) return util.filter(data, gpgcmd) def verify(self, data, sig): """ returns of the good and bad signatures""" sigfile = datafile = None try: # create temporary files fd, sigfile = tempfile.mkstemp(prefix="hg-gpg-", suffix=".sig") fp = os.fdopen(fd, 'wb') fp.write(sig) fp.close() fd, datafile = tempfile.mkstemp(prefix="hg-gpg-", suffix=".txt") fp = os.fdopen(fd, 'wb') fp.write(data) fp.close() gpgcmd = ("%s --logger-fd 1 --status-fd 1 --verify " "\"%s\" \"%s\"" % (self.path, sigfile, datafile)) ret = util.filter("", gpgcmd) finally: for f in (sigfile, datafile): try: if f: os.unlink(f) except: pass keys = [] key, fingerprint = None, None err = "" for l in ret.splitlines(): # see DETAILS in the gnupg documentation # filter the logger output if not l.startswith("[GNUPG:]"): continue l = l[9:] if l.startswith("ERRSIG"): err = _("error while verifying signature") break elif l.startswith("VALIDSIG"): # fingerprint of the primary key fingerprint = l.split()[10] elif (l.startswith("GOODSIG") or l.startswith("EXPSIG") or l.startswith("EXPKEYSIG") or l.startswith("BADSIG")): if key is not None: keys.append(key + [fingerprint]) key = l.split(" ", 2) fingerprint = None if err: return err, [] if key is not None: keys.append(key + [fingerprint]) return err, keys def newgpg(ui, **opts): """create a new gpg instance""" gpgpath = ui.config("gpg", "cmd", "gpg") gpgkey = opts.get('key') if not gpgkey: gpgkey = ui.config("gpg", "key", None) return gpg(gpgpath, gpgkey) def sigwalk(repo): """ walk over every sigs, yields a couple ((node, version, sig), (filename, linenumber)) """ def parsefile(fileiter, context): ln = 1 for l in fileiter: if not l: continue yield (l.split(" ", 2), (context, ln)) ln +=1 fl = repo.file(".hgsigs") h = fl.heads() h.reverse() # read the heads for r in h: fn = ".hgsigs|%s" % hgnode.short(r) for item in parsefile(fl.read(r).splitlines(), fn): yield item try: # read local signatures fn = "localsigs" for item in parsefile(repo.opener(fn), fn): yield item except IOError: pass def getkeys(ui, repo, mygpg, sigdata, context): """get the keys who signed a data""" fn, ln = context node, version, sig = sigdata prefix = "%s:%d" % (fn, ln) node = hgnode.bin(node) data = node2txt(repo, node, version) sig = binascii.a2b_base64(sig) err, keys = mygpg.verify(data, sig) if err: ui.warn("%s:%d %s\n" % (fn, ln , err)) return None validkeys = [] # warn for expired key and/or sigs for key in keys: if key[0] == "BADSIG": ui.write(_("%s Bad signature from \"%s\"\n") % (prefix, key[2])) continue if key[0] == "EXPSIG": ui.write(_("%s Note: Signature has expired" " (signed by: \"%s\")\n") % (prefix, key[2])) elif key[0] == "EXPKEYSIG": ui.write(_("%s Note: This key has expired" " (signed by: \"%s\")\n") % (prefix, key[2])) validkeys.append((key[1], key[2], key[3])) return validkeys def sigs(ui, repo): """list signed changesets""" mygpg = newgpg(ui) revs = {} for data, context in sigwalk(repo): node, version, sig = data fn, ln = context try: n = repo.lookup(node) except KeyError: ui.warn(_("%s:%d node does not exist\n") % (fn, ln)) continue r = repo.changelog.rev(n) keys = getkeys(ui, repo, mygpg, data, context) if not keys: continue revs.setdefault(r, []) revs[r].extend(keys) nodes = list(revs) nodes.reverse() for rev in nodes: for k in revs[rev]: r = "%5d:%s" % (rev, hgnode.hex(repo.changelog.node(rev))) ui.write("%-30s %s\n" % (keystr(ui, k), r)) def check(ui, repo, rev): """verify all the signatures there may be for a particular revision""" mygpg = newgpg(ui) rev = repo.lookup(rev) hexrev = hgnode.hex(rev) keys = [] for data, context in sigwalk(repo): node, version, sig = data if node == hexrev: k = getkeys(ui, repo, mygpg, data, context) if k: keys.extend(k) if not keys: ui.write(_("No valid signature for %s\n") % hgnode.short(rev)) return # print summary ui.write("%s is signed by:\n" % hgnode.short(rev)) for key in keys: ui.write(" %s\n" % keystr(ui, key)) def keystr(ui, key): """associate a string to a key (username, comment)""" keyid, user, fingerprint = key comment = ui.config("gpg", fingerprint, None) if comment: return "%s (%s)" % (user, comment) else: return user def sign(ui, repo, *revs, **opts): """add a signature for the current or given revision If no revision is given, the parent of the working directory is used, or tip if no revision is checked out. See 'hg help dates' for a list of formats valid for -d/--date. """ mygpg = newgpg(ui, **opts) sigver = "0" sigmessage = "" date = opts.get('date') if date: opts['date'] = util.parsedate(date) if revs: nodes = [repo.lookup(n) for n in revs] else: nodes = [node for node in repo.dirstate.parents() if node != hgnode.nullid] if len(nodes) > 1: raise util.Abort(_('uncommitted merge - please provide a ' 'specific revision')) if not nodes: nodes = [repo.changelog.tip()] for n in nodes: hexnode = hgnode.hex(n) ui.write("Signing %d:%s\n" % (repo.changelog.rev(n), hgnode.short(n))) # build data data = node2txt(repo, n, sigver) sig = mygpg.sign(data) if not sig: raise util.Abort(_("Error while signing")) sig = binascii.b2a_base64(sig) sig = sig.replace("\n", "") sigmessage += "%s %s %s\n" % (hexnode, sigver, sig) # write it if opts['local']: repo.opener("localsigs", "ab").write(sigmessage) return for x in repo.status()[:5]: if ".hgsigs" in x and not opts["force"]: raise util.Abort(_("working copy of .hgsigs is changed " "(please commit .hgsigs manually " "or use --force)")) repo.wfile(".hgsigs", "ab").write(sigmessage) if '.hgsigs' not in repo.dirstate: repo.add([".hgsigs"]) if opts["no_commit"]: return message = opts['message'] if not message: message = "\n".join([_("Added signature for changeset %s") % hgnode.short(n) for n in nodes]) try: repo.commit([".hgsigs"], message, opts['user'], opts['date']) except ValueError, inst: raise util.Abort(str(inst)) def node2txt(repo, node, ver): """map a manifest into some text""" if ver == "0": return "%s\n" % hgnode.hex(node) else: raise util.Abort(_("unknown signature version")) cmdtable = { "sign": (sign, [('l', 'local', None, _('make the signature local')), ('f', 'force', None, _('sign even if the sigfile is modified')), ('', 'no-commit', None, _('do not commit the sigfile after signing')), ('k', 'key', '', _('the key id to sign with')), ('m', 'message', '', _('commit message')), ] + commands.commitopts2, _('hg sign [OPTION]... [REVISION]...')), "sigcheck": (check, [], _('hg sigcheck REVISION')), "sigs": (sigs, [], _('hg sigs')), }