every chunk has the encryption key type as first byte and we do not want to rewrite the whole repo
to change the passphrase type to repokey type. thus we simply dispatch this type to repokey
handler.
if there is a repokey that contains the same secrets as they were derived from the passphrase, it will just work.
if there is none yet, one needs to run migrate-to-repokey command to create it.
refactorings:
- introduced concept of default answer:
if the answer string is in the defaultish sequence, the return value of yes() will be the default.
e.g. if just pressing <enter> when asked on the console or if an empty string or "default" is
in the environment variable for overriding.
if an environment var has an invalid value and no retries are enabled: return default
if retries are enabled, next retry won't use the env var again, but either ask via input().
- simplify:
only one default - this should be a SAFE default as it is used in some special conditions
like EOF or invalid input with retries disallowed.
no isatty() magic, the "yes" shell command exists, so we could receive input even if it is not from a tty.
- clean:
separate retry flag from retry_msg
one of the biggest issues with borg < 1.0 was that it had a default target chunk
size of 64kiB, thus it created a lot of chunks, a huge chunk management overhead
(high RAM and disk usage).
this is available in python 3.4+.
note:
before removing the pbkdf tests, i ran them with the pbkdf from stdlib to make sure it gives same result.
long term testing of this now belongs into stdlib tests, not into borg.
we now use -P for --prefix and -p for --progress. previously, the
result of -p depended on the command: some were using it for
--progress, some for --prefix. this was confusing and was making it
impossible to both --progress and --prefix with on-letter options
--progress is likely used more often and interactively, so it get the
keystroke shortcut (lower "-p")
--prefix is used more rarely / in scripts, but important/dangerous for
prune, so it get the extra keystroke (higher "-P")
If somebody used -p someprefix and does not fix that to -P, it will
result in "no archive specified" or "unrecognized argument". So it
will neither cause pruning to remove wrong data nor go unnoticed.
Closes: #563
The fnmatch module in Python's standard library implements a pattern
format for paths which is similar to shell patterns. However, “*”
matches any character including path separators. This newly introduced
pattern syntax with the selector “sh” no longer matches the path
separator with “*”. Instead “**/” can be used to match zero or more
directory levels.
There are already three different styles and a fourth will be added.
A definition list is easier to navigate when trying to find the
description of a specific style.
Thomas Waldmann