1 #========================================================================
3 # ChangeLog - change log for BackupPC.
6 # Revision history for BackupPC, detailing significant changes between
7 # versions, most recent first.
10 # Craig Barratt <cbarratt@users.sourceforge.net>
12 #========================================================================
14 # Version __VERSION__, released __RELEASEDATE__.
16 # See http://backuppc.sourceforge.net.
18 #========================================================================
20 #------------------------------------------------------------------------
21 # Version __VERSION__, __RELEASEDATE__
22 #------------------------------------------------------------------------
24 * Added internationalization (i18n) code from Xavier Nicollet.
25 Voila! BackupPC_Admin now supports English and French, and
26 adding more languages is now easy.
28 * Added patch from Toby Johnson that allows additional users to be
29 specified in the hosts file; these users can also view/start/stop
30 and restore backups for that host. Also added a new config
31 setting $Conf{CgiNavBarAdminAllHosts} that allows all hosts to
32 be listed in the left nav bar for admins.
34 * Added "PerlTaintCheck On" to the mod_perl section in the docs,
35 suggested by Tim Demarest.
37 #------------------------------------------------------------------------
38 # Version 1.5.0, 2 Aug 2002
39 #------------------------------------------------------------------------
41 * Changed conf/config.pl so that $Conf{TarIncrArgs} uses the --newer
42 option instead of --newer-mtime. Also removed --atime-preserve from
43 $Conf{TarClientCmd}. This makes the default settings work better
46 * Fixed configure.pl so it correctly detects a running BackupPC <= v1.4.0
47 so it can correctly warn the user to stop it before upgrading. Reported
50 * Added missing ";" to entity escape in EscapeHTML in BackupPC_Admin.
51 Reported by Guillaume Filion.
53 * Added LDAP setup to documentation from David Holland.
55 * Tar.pm now adds a "." to file paths that start with "/", so that all
56 tar paths are relative. From Ludovic Drolez.
58 #------------------------------------------------------------------------
59 # Version 1.5.0beta0, 30 Jun 2002
60 #------------------------------------------------------------------------
62 * A full set of restore options is now supported, including direct
63 restore via smbclient or tar or downloading a zip or tar file.
65 * Major additions to CGI script to support better directory navigation,
66 restore features and mod_perl. Also, file downloads from the CGI
67 interface now correctly preserve the file name and provide the
68 correct Content-Type for the most common types of files. Improved
69 directory navigation was contributed by Ryan Kucera.
71 * New script BackupPC_zipCreate (contributed by Guillaume Filion) is the
72 zip analog of BackupPC_tarCreate. BackupPC_zipCreate can be used to
73 create a zip archive of any portion of a backup.
75 * Substantial additions to BackupPC_tarCreate to support restore,
76 including modifying path names, handling hardlinks, fixing
77 support of old backups without attributes (pre-v1.4.0). Plus
78 BackupPC_tarCreate is now an offical part of the release.
79 (Lack of support for hardlinks was reported by John Stanley.)
81 * BackupPC_tarExtract now supports hardlinks and fixed pooling of
84 * A unix domain socket is now used for communication between the CGI
85 interface and BackupPC. The original TCP socket is optional. Sockets
86 are correctly re-initialized if config.pl is updated with new socket
89 * For improved security messages over the unix or TCP socket are protected
90 via an MD5 digest based on a shared secret, a sequence number, a time
91 stamp and a unique per-connection number.
93 * Additions to configure.pl to support install of directory navigation
96 * Fixed case where $Conf{BackupFilesOnly} or $Conf{BackupFilesExclude}
97 were set to a single string or list (in v1.4.0 only the case of
98 hash worked correctly). Reported by Phillip Bertolus.
100 * Fixed case of $Conf{BackoutGoodCnt} == 0. This setting now makes the
101 client always subject to blackout, matching the comments in config.pl.
102 Also fixed handling of $Conf{BackoutGoodCnt} < 0 in the CGI script
103 reported by Pascal Schelcher.
105 * Fixed byte and file totals for tar backups, reported by several users.
107 * Fixed --newer-mtime date/timestamp format to make it ISO 8601 compliant,
108 suggested by Erminio Baranzini.
110 * Fixed handling of $Conf{BackupFilesOnly} in BackupPC::Xfer::Tar.pm, as
111 well as shell escaping of tar arguments.
113 * Fixed entity encoding of 8-bit characters in the CGI interface.
115 * Added optional CGI headers in $Conf{CgiHeaders} that by default
116 is set to a no-cache pragma. Suggested by Benno Zuure.
118 #------------------------------------------------------------------------
119 # Version 1.4.0, 16 Mar 2002
120 #------------------------------------------------------------------------
122 * BackupPC now supports tar (in addition to smb) for extracting host
123 data. This is the most convenient option for linux/unix hosts.
124 Tar can be configured to run over ssh, rsh or to backup a local
125 nfs mount from the host.
127 * Support for special files, including symbolic links, fifo, character
128 and block device files has been added, so that all native linux/unix
129 file types can be correctly backed up when using tar transport.
130 Special files are all stored as regular files and the type attributes
131 are used to remember the original file type.
133 * All unix file attributes are now saved (and pooled when possible).
134 This includes user and group ownership, permissions, and modification
135 time. Smbclient also does a reasonable job of emulating unix
136 permissions (such as mtime), and these attributes get saved too.
138 * The new default is to not fill incremental dumps. configure.pl
139 automatically sets $Conf{IncrFill} to 0. The default was 1
140 (incrementals were filled with hardlinks). Since the CGI
141 script does filling at browsing time, there is no need to
142 fill incremental dumps.
144 * Backup file names are now stored in "mangled" form. Each node of a
145 path is preceded by "f", and special characters (\n, \r, % and /) are
146 URI-encoded as "%xx", where xx is the ascii character's hex value. So
147 c:/craig/example.txt is now stored as fc/fcraig/fexample.txt. This
148 was done mainly so meta-data could be stored alongside the backup
149 files without name collisions. In particular, the attributes for the
150 files in a directory are stored in a file called "attrib", and
151 mangling avoids file name collisions (I discarded the idea of having
152 a duplicate directory tree for every backup just to store the
153 attributes). Other meta-data (eg: rsync checksums) could be stored in
154 file names preceded by, eg, "c". There are two other benefits to
155 mangling: the share name might contain "/" (eg: "/home/craig" for tar
156 transport), and I wanted that represented as a single level in the
157 storage tree. Secondly, as files are written to NewFileList for later
158 processing by BackupPC_link, embedded newlines in the file's path
159 will cause problems which are avoided by mangling.
161 The CGI script undoes the mangling, so it is invisibe to the user.
162 Of course, old (unmangled) backups are still supported by the CGI
165 * Various changes to the CGI interface, BackupPC_Admin:
167 + Added button that allows users to manually start a full dump in
168 addition to the existing incremental dump.
170 + Added display of file attributes when browsing backups.
172 + Added an optional holdoff time specified by the user when canceling
173 a backup. BackupPC will not attempt any new backups for at least the
174 specified time. This holdoff time can be changed whether or not a
177 + Added supports for file mangling, and correct merging of unfilled
178 backups from mangled or unmangled (and compressed or uncompressed)
179 fulls when browsing or restoring.
181 + Only displays a "Start Incr Backup" button if there are already some
184 + For DHCP hosts, when a user tries to manually start a backup, add
185 a check for the netbios name of both the host the request came
186 from (REMOTE_ADDR) and the last known DHCP address for that host
187 to see if either address matches the host. If not, an error
188 message is display. The previous behavior was that only requests
189 from the client itself succeeded, and requests from other machines
192 * Changed the version numbering to X.Y.Z, instead of X.0Y. This release
193 is 1.4.0. The first digit is for major new releases, the middle digit
194 is for significant feature releases and improvements, and the last
195 digit is for bug fixes. You should think of the old 1.00, 1.01, 1.02
196 and 1.03 as 1.0.0, ..., 1.3.0.
198 * BackupPC and the CGI script BackupPC_Admin now check that the effective
199 user id is correct to avoid accidentally launching BackupPC as the
200 wrong user or detecting CGI configuration problems. This behavior
201 can be turned off using the $Conf{BackupPCUserVerify} option.
203 * In numerous places changed "Smb" to "Xfer" (eg: log file names) to
204 support generic names for both smb and tar transport methods. The
205 CGI script checks for old names for backward compatibility.
207 * Major changed to Backup_dump to support new tar transport. All transport
208 specific code moved into BackupPC::Xfer::Smb and BackupPC::Xfer::Tar
211 * Added workaround for a bug in Samba's smbclient for files between 2GB
212 and 4GB. The file size in the tar header is incorrect. This allows
213 files up to 4GB to work with smbclient, rather than 2GB. To support
214 files larger than 2GB you must make sure perl is compiled with the
215 uselargefiles option (use "perl -V | egrep largefiles" to check) and
216 the pool directory must be on a file system that supports large files.
218 * Moved the pool writing code into a module BackupPC::PoolWrite. This
219 allows the clever file pool checking (digest, uncompressing, comparing
220 etc with minimum disk IO) to be used easily in multiple places (eg: it
221 is now used for writing attribute files so they can be pooled).
223 * Changed MD5 to Digest::MD5 to avoid use of the depreceated MD5 module.
225 * Shortened default $Conf{MyPath} so that perl's taint mode is more likely
226 to be happy. The old $Conf{MyPath} contained /usr/local/bin, which
227 on one user's machine was world writable and perl -T correctly
230 * Fixed ping command options in Lib.pm so that it works on OpenBSD.
231 Thanks to Kyle Amon for sending the fix. Decided to move the
232 ping options from Lib.pm into config.pl (as $Conf{PingArgs}) and
233 now configure.pl tries to come up with a sensible default based on
236 * Fixed argument checking in BackupPC_tarExtract to allow '$' in the
237 share name (eg: C$). Thanks to Jules Agee for this fix. Also
238 changed the default config.pl so that single quotes are used
239 everywhere so that people don't get tripped up putting '$' inside
240 double-quoted strings.
242 #------------------------------------------------------------------------
243 # Version 1.03, 9 Dec 2001
244 #------------------------------------------------------------------------
246 * BackupPC now has full support for compression. There are now two
247 pool areas, the original pool for uncompressed files, and cpool for
248 compressed files. The compression is done by Compress::Zlib.
249 Compression reduces the pool disk usage by around 40%, although your
250 mileage may vary. Compression is optional and can also be specified on
251 a per-PC basis (although this will cost more pool storage since many
252 backup files will have to be stored in both compressed and
255 * A new script, BackupPC_compressPool, can be run to compress the entire
256 pool. This is used once to migrate all the pool data from uncompressed
257 to compressed on existing installations. Read the documentation
258 (Installing BackupPC/Compressing an existing pool) before running
259 BackupPC_compressPool!
261 Alternatively, compression can simply be turned on and all new backups
262 will be compressed. Both old (uncompressed) and new (compressed)
263 backups can be browsed and viewed. Eventually, the old backups will
264 expire and all the pool data will be compressed. However, until the
265 old backups expire, this approach could require 60% or more additional
266 pool storage space to store both uncompressed and compressed versions
269 * Significant improvements to the cgi interface, BackupPC_Admin:
271 - much better layout navigation
272 - handles compressed backup files and compressed log files
273 - handles unfilled incremental dumps
274 - better backup directory browsing navigation
275 - reports compression statistics
276 - $Conf{CgiDateFormatMMDD} allows you to set date format (MM/DD or DD/MM)
277 - Additional customization with $Conf{CgiHeaderFontType},
278 $Conf{CgiHeaderFontSize}, $Conf{CgiNavBarBgColor}, and
279 $Conf{CgiHeaderBgColor}.
281 * Eliminated BackupPC_queueAll. BackupPC directly reads the hosts
282 file and queues the PCs itself. Like config.pl, BackupPC will
283 re-read the hosts file on each wakeup if its modification time
284 changes, or upon a SIGHUP. This also makes for better behavior
285 when adding a host: if you add hosts, simply send a SIGHUP to
286 BackupPC or wait for the next wakeup.
288 * BackupPC_dump now compresses the SmbLOG file if compression is enabled.
290 * BackupPC_dump keeps track of compressed file sizes so that compression
291 statistics can be reported by the cgi interface.
293 * Aging of old log files now handles compressed log files (.z extension).
295 * Added configuration option $Conf{IncrFill} to specify whether
296 incremental dumps should be filled in. Old behavior was that
297 filling was on. Now it's optional. See config.pl for more
300 * BackupPC_nightly now cleans and generates statistics for both
301 the uncompressed pool and compressed pool (cpool).
303 * Added new utility script BackupPC_zcat that can be used to
304 uncompresses BackupPC files.
306 * configure.pl offers various options related to compression,
307 depending upon whether this is a new install or upgrade,
308 and whether or not Compress::Zlib is installed.
310 * configure.pl now makes a backup copy of config.pl before
311 config.pl is updated.
313 * added three new fields to the backups file to handle optional
314 filling and compression stats.
316 * Added -e option to BackupPC_dump. BackupPC now invokes BackupPC_dump -e
317 on each dhcp host once each night to verify that very old backups are
318 expired. This ensures that very old backups are expired even if
319 the dhcp host has not been on the network for a long time.
321 * fixed bug in BackupPC::FileZIO.pm that required Compress::Zlib,
322 even if compression was off. Thanks to Steve Holmes for reporting
325 * fixed bug that caused a BackupPC queue to get blocked when a backup
326 cancel attempt was made during the BackupPC_link phase.
328 #------------------------------------------------------------------------
329 # Version 1.02, 28 Oct 2001.
330 #------------------------------------------------------------------------
332 * Added new script BackupPC_tarExtract to extract the smbclient tar
333 archive. This reduces disk writes by perhaps 90-95% and disk reads by
334 50%. Previously, tar was used to extract and write everything to disk.
335 Then BackupPC_dump would read enough of each file to compute the MD5
336 digest, and then compare the full file with candidate pool files. So
337 for each 1MB file that matches a single file in the pool, there would
338 be 1MB of disk writes and 2MB of disk reads (to compare two 1MB files).
340 BackupPC_tarExtract instead extracts the archive using a 1MB memory
341 buffer. This allows the MD5 digest to be computed without touching the
342 disk. Next, any potential pool file compares are done by comparing the
343 pool file against the incoming tar data in memory, which only requires
344 the pool file to be read. So for each 1MB file that matches a single
345 file in the pool, there are now no disk writes, and only 1MB of reads.
346 BackupPC_tarExtract handles arbitrary size files and repeated
347 potential pool matches. If the incoming file doesn't match the pool
348 then it is written to disk (once the pool is mature this happens maybe
351 * Substantial changes to BackupPC_dump:
353 + BackupPC_tarExtract is now used in place of tar.
355 + BackupPC_dump now reads the output from both smbclient and
356 BackupPC_tarExtract and merges them into SmbLOG.
358 + Named pipes are no longer used to connect smbclient to tar
359 (now BackupPC_tarExtract). Regular pipes are used instead.
360 This avoids the need to system mknod or mkfifo.
362 + Locked files on the client that can't be read by smbclient
363 previously were filled with 0x0 bytes by smbclient, meaning
364 tar extracted a useless file filled with 0x0 bytes. Now,
365 BackupPC_dump watches the output of smbclient and removes
366 any files that smbclient couldn't read. This avoids storing
367 useless files. It tries to replace such files with a hard link
368 to a previous dump. These actions appear in the log file.
370 * added new module lib/BackupPC/FileZIO.pm. This handles pool file
371 I/O and is used by BackupPC_tarExtract. BackupPC::FileIO supports
372 reading and writing compressed and regular files and provides all the
373 hooks for compression support in BackupPC (should be supported in next
374 version). BackupPC::FileIO also does efficient writing of files that
375 contain leading 0x0 bytes (by seeking past the 0x0 bytes). This is
376 helpful when smbclient reads a locked file, and it fills the tar
377 output with a file of the correct size but all 0x0. Such files will be
378 later removed by BackupPC_dump. But in the meantime, BackupPC::FileIO
379 writes such files efficiently (as sparse files), meaning just a few
380 blocks of disk space will be needed even if the file is large.
382 * alive/dead counting for blackout now works correctly for DHCP hosts.
384 * BackupPC resets activeJob on startup, to fix bug when BackupPC was
385 killed and restarted with backups running.
387 * added extra non blocking select() in BackupPC to make sure the socket
390 * BackupPC avoids queuing multiple BackupPC_queueAll's on the CmdQueue.
392 * Updated BackupPC_sendEmail to correctly parse the locked file
393 error from 2.2.1a smbclient, so that missing Outlook file emails
394 can be correctly sent.
396 * Changed HostInfoRead() in lib/BackupPC/Lib.pm to lowercase the
397 hostname read from the hosts file.
399 * BackupPC_Admin provides general summary when the host name is empty.
401 * configure.pl (and BackupPC) now requires perl 5.6.0 or later.
403 * configure.pl complains if BackupPC is already running, reminding you
404 to stop it before upgrading.
406 * updated documentation, and fixed auto-insertion of config.pl into
407 BackupPC.pod (previously the last config parameter was left out of
410 #------------------------------------------------------------------------
411 # Version 1.01, 30 Sep 2001
412 #------------------------------------------------------------------------
414 * Documentation cleanup in README, doc/BackupPC.pod, conf/config.pl.
416 * BackupPC_sendMail now reads the optional per-PC config file, allowing
417 email configuration parameters to be set on a per-PC basis.
419 * Removed the unused 4096-length MD5 digest code in lib/BackupPC/Lib.pm.
421 #------------------------------------------------------------------------
422 # Version 1.00, 21 Sep 2001
423 #------------------------------------------------------------------------
425 * Initial release of BackupPC on sourceforge.net.