Commit graph

68 commits

Author SHA1 Message Date
Linus Torvalds
39a0ac965b git storage: actually update the remote repository if the local cache is more recent
Again, note that this currently only happens when you initially open the repository.

So if you do

    subsurface https://.../repo[myubranch]

it will start up by fetching the remote information, and updating the
local cache.  If you then download new dives, and do a save-and-exit, it
will save to the local cache, but it doesn't do the fetch at this point,
so the remote is now begind.

The *next* time you start subsurface, and load that git branch again, it
will fetch the remote, and now notice that the local cache is ahead of
it (because you downloaded new dives and saved them locally), and *then*
it will try to update the remote with the new information.

This is obviously bogus, but we will need to decide exactly how we want
to sync with the remote repository.  But now the core functionality is
there, it's just that we need some interface to say "sync now".
Especially in the face of spotty (or non-working) internet, you want a
GUI etc for this whole remote sync, rather than doing it unconditionally
and silently whenever you load the local cache initially.

With that caveat:

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-06-10 20:57:57 -07:00
Linus Torvalds
971f1c6674 git storage: re-organize code to make 'origin' remote more widely available
I'm going to try to update the remote if the local cache is more recent
when we fetch the data, which requires access to the remote over a wider
range of code.  This re-organizes the code so that we can free the
remote later without having to have nasty error handling.

We avoid the whole "if an error happened, free the remote and return" by
creating helper functions and freeing the remote in the caller, so that
all paths end up freeing it naturally.

NOTE! We want to try to update the remote when we save the local cache
too, so this whole "update remote when opening it" is incomplete. But
 (a) we do want to do it here as well
and
 (b) this is the easiest place to create the initial "push to remote"
     code without any new "sync with cloud" interfaces.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-06-10 20:57:13 -07:00
Linus Torvalds
1379f34792 git storage: actually update cached copy from remote
We used to fetch the remote information but not actually do anything
about it, except report when it wasn't up-to-date.

Now we actually update the local cached copy if the remote has changed.

The code does not try to actually merge things, so only fast-forward
updates are done, but that should be the normal case.  We might
eventually do some simple merging on our own, but I suspect manual
merging may be the safer option.

We don't currently ever update the remote repository, and only inform
users that our local repository is ahead of the remote.  Fixing that is
the next step.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-06-10 18:13:25 -07:00
Dirk Hohndel
2a110811cf Cloud storage: be more careful when trying to determine a user name
Since we use the email address (including the '@' sign) as the repository
name we have to be more careful when trying to pick an account name from a
git URL.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-06-09 20:54:01 -07:00
Dirk Hohndel
e84d8624bb Add strndup.h header so we can use this useful function
It's missing on Windows... we had this helper in liquivision.c but since I
used the function in git-access.c I figured I should just turn it into a
little helper.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-05-31 23:14:56 -07:00
Dirk Hohndel
5bbcc7f16d Cloud storage: first stab at implementing cloud storage
So far there is no mechanism to actually create a repository on the
server, so this only works with the two test repositories.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-05-31 22:35:50 -07:00
Dirk Hohndel
a6b6674780 Cloud storage: rethink the terminology used
Cloud storage makes more sense that remote storage - at least I assume
that more people are used to thinking about "storing things in the cloud".

Don't use PIN or passphrase, call it a password everywhere.

Don't use copy_string() to copy the password - the git credentials routine
asserts that password is not NULL, so make sure we at least have a pointer
to an empty string here.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-05-31 19:45:05 -07:00
Dirk Hohndel
97ef9d0ee8 Cloud storage: add support for https based remote
This will make it easier to access the remote storage.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-05-31 17:15:58 -07:00
Dirk Hohndel
29e7459d6b Remote storage: second attempt to fix build with older libgit2
That was embarrassing...

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-05-28 21:43:32 -07:00
Dirk Hohndel
c6e0b74452 Remote storage: turns out you need a newer libgit2
I was afraid that this would only work with a farily current git master of
libgit2 and it turns out I was right. The API was available, but the
correct type wasn't.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-05-28 16:09:29 -07:00
Dirk Hohndel
43254a70ca Remote storage: provide credentials for ssh based remotes
The key location is hard coded as this is only intended for our own
infrastructure, so we don't need multiple keys.

If the private key is protected by a passphrase, this needs to be manually
added to the preferences. As RemoteStorage->passphrase.

This has only be tested with a current version of libgit2 master, but
should compile with any previous version (the API doesn't exist in v0.19
and earlier - that's handled with appropriate #if clauses).

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-05-28 14:39:35 -07:00
Dirk Hohndel
95664af53b Add USE_LIBGIT23_API as cmake option
Just as we would expect, the libgit2 developers of course once again broke
their API. In order to compile against current master we need to remap
those APIs once again.

Simply call cmake with -DUSE_LIBGIT23_API

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-05-28 09:13:51 -07:00
Dirk Hohndel
e3215123d1 Fix parsing of git branch encoded in file name
If the folder has a trailing '/' we picked the wrong substring as branch
name.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-05-28 08:14:16 -07:00
Patrick Valsecchi
1c55f47662 Fix Ubuntu compilation error.
Ubuntu has git minor version 20 which has less parameters in
git-remote-fetch.

From ac9516984e4fbc787635b0dfd76649c8e43fab83 Mon Sep 17 00:00:00 2001
From: Patrick Valsecchi <patrick@thus.ch>
Date: Tue, 24 Feb 2015 08:45:21 +0100
Subject: [PATCH 2/2] Fix Ubuntu compilation error.

Ubuntu has git minor version 20 which has less parameters in
git-remote-fetch.

Signed-off-by: Patrick Valsecchi <patrick@thus.ch>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-02-24 11:41:11 +01:00
Linus Torvalds
fdd40d3c6a Remove unnecessary use of non-portable 'mkdir()'
This fixes the problem with Windows being the usual non-POSIX PoS that it is..

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-02-15 13:33:44 -08:00
Linus Torvalds
27b4d10f91 Start parsing remote git repository addresses
This doesn't really usefully work, but I'm committing it to have git
diff and history.  It also insanely hardcodes the git-repo cache
directory, because right now it's purely useful for development.

The big missing pieces are:

 - progress information
 - credential callbacks not implemented

where the first one makes the user interface horrible (long delays with
nothing visibly going on), and the second one makes ssh logins etc not
work.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-02-15 06:03:51 -08:00
Linus Torvalds
b770d0a6b7 git-access: use the new format_string helpers
It may be a bit less efficient to use a printf-style interface rather
than the explicit malloc and memcpy, but the code ends up simpler and
more readable.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-02-15 06:03:30 -08:00
Linus Torvalds
e287590e4b Start splitting out git repo helper routines
This doesn't actually change any code, but it moves the 'is_git_repo()'
function that is used by both loading and saving into a new git-access.c
file.

This is where I'll start doing remote repo syncing too. Knock wood.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-02-15 06:03:19 -08:00