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39496bf65a
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58 Commits

Author SHA1 Message Date
Marek Marczykowski-Górecki
39496bf65a backups: use more restrictive pattern for directory canonicalization (#840) 
The --xform option affects all the names - including symlink targets. So
make the pattern as precise as possible to not break symlinks in dom0
home backup. Still not ideal, but at least limit damage to relative
symlinks pointing at <username> directory (which hopefully user will
not create). Previous version broke all relative symlinks...
 2014-05-13 03:18:08 +02:00
Wojciech Zygmunt Porczyk
ee059df63e qubesutils.py: get_disk_usage 
get_disk_usage is moved from code-modules and backup.py and rewritten not to
call external du

This commit is part of #822 fix.
 2014-04-24 21:50:12 +02:00
Marek Marczykowski-Górecki
5d7688a2fe backups: allow provide full path for the backup (instead of directory) (#801) 
This will allow the user to choose custom filename, instead of
auto generated 'qubes-backup-XXX'.
 2014-03-17 21:15:39 +01:00
Marek Marczykowski-Górecki
b298110d5f backups: list VMs not selected for backup (#801) 2014-03-14 16:31:04 +01:00
Marek Marczykowski-Górecki
09652cb0f8 core: store date of last backup for each VM 2014-03-10 04:29:14 +01:00
Marek Marczykowski-Górecki
f4194c9d08 backups: implement async backup/restore cancel method (#793) 
The backup_cancel() method kills processes registered by main thread and
set "running_backup_operation.canceled" to True. Then main thread get an
error because of killed processes and check if that was because of
cancel request.

Introduce BackupCanceledError, which can report temporary dir to remove.
 2014-03-08 03:55:47 +01:00
Marek Marczykowski-Górecki
b52d1a4379 backups: remove unused variables 2014-03-08 03:55:23 +01:00
Marek Marczykowski-Górecki
7e507cba6a backups: fix header handling when restoring from VM 
Do wait for nest reported filename only when restoring directly from
dom0. In VM case it isn't necessary and will cause false error report
(because filename will be set to nextfile at the end of restore process,
 so will be treated as spurious file without hmac).
 2014-03-08 03:52:21 +01:00
Marek Marczykowski-Górecki
4a56b65b59 backups: fix error reporting, do not report EOF as an error 
Do not report main thread error (notified as "ERROR" file) as
ExtractWorker error.
 2014-03-08 03:50:08 +01:00
Marek Marczykowski-Górecki
c430355a5b backups: correctly mark if dom0 is present in the backup 
Reset dom0 "backup_content" flag to False, then possibly set it to True.
 2014-03-08 03:46:41 +01:00
Danny Fullerton
8dbc417642 backups: Fix backup's passphrase unicode encoding issue 2014-02-05 06:51:47 +01:00
Marek Marczykowski-Górecki
7278102aef backups: fix VM size calculation 
Count only files included in the backup, not all of them (so ignore
temporary files etc).
 2014-02-05 05:48:55 +01:00
Marek Marczykowski-Górecki
f461c09d89 backups: improve error message 2014-02-05 04:34:30 +01:00
Marek Marczykowski-Górecki
f2f9f568cd backups: enforce estimated upper limit on extracted files count 
Do not allow (compromised) source VM to use all inodes.
 2014-02-05 02:48:00 +01:00
Marek Marczykowski-Górecki
038877d35d backups: fix tar output handling 
Tar print the filename right _before_ processing the file, so wait for
the next filename before processing actual file.
 2014-02-01 14:03:26 +01:00
Marek Marczykowski-Górecki
75c0e775a4 backups: simplify EOL markers handling 
Let the python do it right.
 2014-02-01 14:02:38 +01:00
Marek Marczykowski-Górecki
a17b7f584d backups: improve exception reporting during extract 
Report original exception location, not the wrapper function.
 2014-02-01 14:01:21 +01:00
Marek Marczykowski-Górecki
f1bb17a3e1 backups: improve error reporting for invalid backup directory 2014-01-19 04:51:46 +01:00
Marek Marczykowski-Górecki
a6740610e3 backups: fix handling new format without backup header 
Tar will report error when 'backup-header' file wasn't found. Ignore
this particular error.
 2014-01-19 04:50:56 +01:00
Marek Marczykowski-Górecki
49259dacf6 backup: minor fix in function arguments 2014-01-19 04:50:23 +01:00
Marek Marczykowski-Górecki
26b32ca51e backups: refuse to create encrypted and compressed backup (#775) 2014-01-15 05:00:13 +01:00
Marek Marczykowski-Górecki
357fe37ed2 backups: change data/time delimiter in filename according to ISO 8601 2014-01-15 04:34:51 +01:00
Marek Marczykowski-Górecki
50c00e555e backups: make cleanup code more defensive 
If we are killing remaining processes in cause of exception, ignore
failure here (OSError is raised in case of non existing process).
 2014-01-15 03:57:59 +01:00
Marek Marczykowski-Górecki
7b1e9f3bfb backups: implement backup header 
It stores basic backup information like used hmac/crypto algorithm,
whether backup is encrypted/compressed and possibly more. The header
file is parsed only after successful HMAC verification. Because we do
not know which HMAC algorithm was used before reading the header, try to
guess trying all supported (starting with the default one).

Backup header is stored as the first file, which is always not encrypted
and not compressed. Then qubes.xml follows.
 2014-01-15 03:53:45 +01:00
Marek Marczykowski-Górecki
4c29d743c8 backups: introduce configurable HMAC/encryption algo 
For now always set it to default values (no frontend application uses
those parameters), but be prepared for further improvements.
 2014-01-15 03:50:29 +01:00
Marek Marczykowski-Górecki
4b493b6d9a backups: unify compress/encrypt parameter names 2014-01-15 03:45:12 +01:00
Marek Marczykowski-Górecki
a2037a4985 backups: do not hardcode limit values in the code (#771) 
Also introduce limit for stderr read from VM (anti DoS protection).
 2014-01-15 03:36:16 +01:00
Marek Marczykowski-Górecki
b85cd0448f backups: minor fixes, mostly formatting 2014-01-15 01:05:54 +01:00
Marek Marczykowski-Górecki
40953176f4 backups: reorganise restore API 
Call backup_restore_header from backup_restore_prepare, there is no
sense in requiring the user to call them separately. Also store all
parameters in restore_info object as special '$OPTIONS$' VM to not
require passing them twice (with all the chances for the errors).
 2014-01-13 04:45:02 +01:00
Marek Marczykowski-Górecki
338fc74ea2 backups: misc minor fixes 2014-01-13 04:37:54 +01:00
Marek Marczykowski-Górecki
c6ca2725a1 backups: rename classes according to coding style 2014-01-13 04:27:19 +01:00
Marek Marczykowski-Górecki
c825a41909 backups: ignore EPIPE on pipe.close() 
This is most likely some padding left in output buffer. See #764
comments for details.
 2014-01-10 03:31:15 +01:00
Marek Marczykowski-Górecki
6abca8ce57 backups: do not chdir() in main process 
This can be any application, for example Qubes Manager. Changing current
dir can have side effects, especially when we do not change it back
after restore (or in any error encountered).
 2014-01-10 03:30:59 +01:00
Marek Marczykowski-Górecki
29bd92aad9 backups: terminate Extract_Worker on error in main process 2014-01-10 03:28:53 +01:00
Marek Marczykowski-Górecki
d86865d299 backups: fix passing -z option to openssl 
Note that this is not fix #775 in any way.
 2014-01-10 03:26:50 +01:00
Marek Marczykowski-Górecki
01312a17d6 backups: improve error handling in Extract_Worker 
Terminate children when exception raised. Also rename tar2_command to
tar2_process to improve readability.
 2014-01-10 03:23:51 +01:00
Marek Marczykowski-Górecki
eeca3eb697 backups: improve error reporting when something failed in dest VM 2014-01-10 03:20:48 +01:00
Marek Marczykowski-Górecki
bcf1a19807 backups: fix include/exclude of dom0 home in backup 
Place it in the list just like the other VMs. Then handle separately.
 2014-01-10 03:19:22 +01:00
Marek Marczykowski-Górecki
994e963ab8 backup: fix handling errors in source VM 2013-12-29 03:20:27 +01:00
Olivier MEDOC
3fcfbbac22 backups: fix trailing slashes for anonymized vm dirnames 2013-12-10 17:02:45 +01:00
Marek Marczykowski-Górecki
84f8a8a8f1 backups: fix restore dom0 home from old backup format 2013-12-06 06:55:23 +01:00
Marek Marczykowski-Górecki
99b001502a backups: compression support 2013-12-02 14:05:41 +01:00
Marek Marczykowski-Górecki
1939cf7ce8 backups: report exception on backup write error 
This is only partial solution - this happens in separate thread so main
thread may not notice this problem (and simply will wait on work queue).
 2013-12-02 14:04:20 +01:00
Marek Marczykowski-Górecki
93b7924bc6 backups: hide unwanted "next volume requests" from tar 2013-12-02 03:49:44 +01:00
Marek Marczykowski-Górecki
e9f08aefd7 backups: disable debugging code 2013-12-01 02:35:42 +01:00
Marek Marczykowski-Górecki
3d70402778 backups: add support for restoring old backup format 
Actually the code is quite similar, so just add few "if" instead of
copying the whole functions.
 2013-11-29 03:25:41 +01:00
Marek Marczykowski-Górecki
eaebf04b34 backups: remove some old unneeded code 2013-11-27 03:21:17 +01:00
Marek Marczykowski-Górecki
c8b8cd0d1f backups: fix restore in non-debug mode 2013-11-27 03:20:45 +01:00
Marek Marczykowski-Górecki
105428accb backups: fix encrypted backup restore 2013-11-27 03:20:26 +01:00
Marek Marczykowski-Górecki
10100767da backups: hide VM names in encrypted backup 
Even when encrypted backup is selected, file list isn't encrypted. Do
not leak VM names in the filenames.
 2013-11-27 03:19:23 +01:00