From 210578da63d9bcb19b7957646837cac414098a02 Mon Sep 17 00:00:00 2001 From: david-sarah Date: Mon, 24 May 2010 16:04:12 -0700 Subject: [PATCH] SFTP: fix time handling to make sure floats are not passed into twisted.conch, and to print times in the future less ambiguously in directory listings. --- src/allmydata/frontends/sftpd.py | 31 +++++++++++++++++++++---------- 1 file changed, 21 insertions(+), 10 deletions(-) diff --git a/src/allmydata/frontends/sftpd.py b/src/allmydata/frontends/sftpd.py index f9426622..c768fd7a 100644 --- a/src/allmydata/frontends/sftpd.py +++ b/src/allmydata/frontends/sftpd.py @@ -75,6 +75,13 @@ def _utf8(x): return repr(x) +def _to_sftp_time(t): + """SFTP times are unsigned 32-bit integers representing UTC seconds + (ignoring leap seconds) since the Unix epoch, January 1 1970 00:00 UTC. + A Tahoe time is the corresponding float.""" + return long(t) & 0xFFFFFFFFL + + def _convert_error(res, request): if not isinstance(res, Failure): logged_res = res @@ -183,8 +190,11 @@ def _lsLine(name, attrs): sz = str(st_size) l += sz.rjust(8) l += ' ' - sixmo = 60 * 60 * 24 * 7 * 26 - if st_mtime + sixmo < time(): # last edited more than 6mo ago + day = 60 * 60 * 24 + sixmo = day * 7 * 26 + now = time() + if st_mtime + sixmo < now or st_mtime > now + day: + # mtime is more than 6 months ago, or more than one day in the future l += strftime("%b %d %Y ", localtime(st_mtime)) else: l += strftime("%b %d %H:%M ", localtime(st_mtime)) @@ -237,18 +247,18 @@ def _populate_attrs(childnode, metadata, size=None): # see webapi.txt for what these times mean if 'linkmotime' in metadata.get('tahoe', {}): - attrs['mtime'] = int(metadata['tahoe']['linkmotime']) + attrs['mtime'] = _to_sftp_time(metadata['tahoe']['linkmotime']) elif 'mtime' in metadata: # We would prefer to omit atime, but SFTP version 3 can only # accept mtime if atime is also set. - attrs['mtime'] = int(metadata['mtime']) + attrs['mtime'] = _to_sftp_time(metadata['mtime']) attrs['atime'] = attrs['mtime'] if 'linkcrtime' in metadata.get('tahoe', {}): - attrs['createtime'] = int(metadata['tahoe']['linkcrtime']) + attrs['createtime'] = _to_sftp_time(metadata['tahoe']['linkcrtime']) if 'ctime' in metadata: - attrs['ctime'] = int(metadata['ctime']) + attrs['ctime'] = _to_sftp_time(metadata['ctime']) attrs['permissions'] = perms @@ -1330,13 +1340,14 @@ class SFTPUserHandler(ConchUser, PrefixingLogMixin): (self._open_files, all_open_files, direntry), level=NOISY) if direntry in all_open_files: (files, opentime) = all_open_files[direntry] + sftptime = _to_sftp_time(opentime) # A file that has been opened for writing necessarily has permissions rw-rw-rw-. return {'permissions': S_IFREG | 0666, 'size': 0, - 'createtime': opentime, - 'ctime': opentime, - 'mtime': opentime, - 'atime': opentime, + 'createtime': sftptime, + 'ctime': sftptime, + 'mtime': sftptime, + 'atime': sftptime, } return err d2.addCallbacks(_got, _nosuch) -- 2.45.2