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Because peer-to-peer endpoints don't get assigned unique names, the
sender == owner check is rendered useless. But I'm not sure we even
need a check since the transaction *is* peer-to-peer now.
One way to secure the returned bus address from prying eyes would be
to employ GcrSecretExchange, but this would only complicate the hand-
shake further and (imo) necessitate a public client-side function to
implement the handshake correctly.
Transaction progress and message signals are really only intended for
one recipient: the client that invoked the method. Use a peer-to-peer
connection for transactions so we're not spamming the system bus.
This entails returning a bus address rather than an object path in
methods that use transactions. The client opens a connection to the
bus address, connects handlers to the Transaction interface (on path
"/"), and then invokes the Start() method.
To finish a transaction, the client need only close the connection,
either explicitly or by terminating. The server will detect this
and clean up resources for that transaction.
Implementing a template pattern for transactions.
The TransactionClass is now abstract, and transaction_new() is replaced
with various method-specific functions like transaction_new_upgrade().
These custom subclasses live in a new file transaction-types.[ch].
Further, transaction_monitor_new_transaction() is replaced with
transaction_monitor_add(). So the handlers for "OS" interface methods
need only create an appropriate transaction instance and hand it off to
the transaction monitor.
Move as much as possible out of transaction_new() for the benefit of
subclasses. The GDBusMethodInvocation property for setting up D-Bus
properties and name watching in the constructed() method.
Turns out we do still need a Start() method after all. Not for lack
of trying, but I can't get away from the client and server doing some
sort of handshake at the beginning to avoid either raciness on the
client side or artificial delays on the server side.
I don't particularly like the "start" signal I've added -- I'd much
prefer subclassing -- but I'm trying to keep the changes incremental.
Expose the instance and class structures, move instance members to a
private structure. This is also towards having the TransactionClass
follow a template pattern.
libostree logs messages to systemd's journal and also to stdout.
Redirect our own stdout back to ourselves so we can capture those
messages and pass them on to clients. Admittedly hokey but avoids
hacking libostree directly (for now).
The ProgressEnd signal indicates to clients there will be no more
DownloadProgress or SignatureProgress signals in the transaction,
and any further Message signals should be output as separate lines
instead of replacing the previous progress message.
In other words, it's just a way of driving GSConsole remotely.
In the style of ostree's CLI, add some option parsing flags
RPM_OSTREE_BUILTIN_FLAG_NONE
RPM_OSTREE_BUILTIN_FLAG_LOCAL_CMD
and extend rpmostree_option_context_parse() to handle the --sysroot and
--peer options and return an OstreeSysroot proxy object (unless the flag
RPM_OSTREE_BUILTIN_FLAG_LOCAL_CMD is passed).
If g_dbus_connection_get_unique_name() returns a name, we're connected
to a message bus. Otherwise we're connected directly to a peer.
Remove redundant "out" parameters from DBus helper functions.
A few changes:
- Modify the D-Bus API to include a Finish() method instead of a Start()
method, the idea being the client calls Finish() to obtain the final
status and optional message once the transaction indicates it's done.
Calling Finish() also removes the transaction object from the bus.
- Introduce Transaction class as a thin wrapper for RPMOSTreeTransaction.
Stores the status info for Finish(), detects when the caller's bus name
vanishes, and emits various status signals to TransactionMonitor.
- Introduce TransactionMonitor as a factory class for Transactions that
also handles book keeping chores like tracking the active Transaction.
The Sysroot and OS interfaces share a TransactionMonitor instance.
This isn't finished yet but it shows the direction I'm going and some
issues I'm encountering.
The CLI layer has 3 different versions of upgrade now:
1) If --check-diff is given, execute it locally regardless of sysroot.
I'm not convinced this variation needs to be executed in the daemon,
but if it does we need a separate D-Bus method since it produces
different results.
2) Else if --sysroot is not "/", execute it locally. I don't think
the daemon currently indicates what sysroot it's operating on, and
even if it did I'm not sure the CLI should be talking to anything
but the "/" daemon.
3) Else if --sysroot is "/", defer to the daemon.
Obviously there's a lot of unwanted code duplication going on here.
I'd like to factor out the common parts and put them in libpriv for
reuse, but I'm also trying to preserve the CLI behavior and all the
various g_print() calls are causing a problem.
I was toying with the idea of adding a "message" signal to
OstreeAsyncProgress for miscellanous status messages. Those signals
could then be handled by either printing the message to stdout or
transmitting it over D-Bus via the Transaction object.
Some of those g_print() messages could then be moved directly into
the common libpriv functions and handed off to OstreeAsyncProgress.
Returns the object path for the given OS name.
This can be done entirely client side, but it requires connecting to
the object manager interface, requesting all the objects and sifting
through them to find the one with a matching Name property.
For some use cases this method is just more convenient.
Creates, configures and exports an RPMOSTreeTransaction object from a
GDBusMethodInvocation. The interface is exported relative to the object
path on which the D-Bus method was called.
Bodhi points rpm-ostree at the "gold" Fedora repo via `file:///`, and
libhif is brokenly checking the mtime on `file://` repos.
Work around that here by just ignoring cache ages, because at present
we don't actually cache really - we drop the RPMs in the tempdir.
(Long term having actual caching of the RPMs would be nice, but
we can revisit this when we get there)
Closes#156
Someday we'll enhance RPM; see
https://github.com/rpm-software-management/rpm/issues/8
But anyways right now at least a few people have tried,
and we get all the way past downloading packages and then bomb
out when doing the actual transaction with a useless error
message.
So let's be up front about this.
This change causes the subcommands to be sorted alphabetically when
'rpm-ostree' is invoked without an argument or with '--help'. This
matches the behavior of the 'ostree' command.
This API was added to libhif a while ago. I'm adding this now because
libhif was changed recently to write the dnf copy of the yumdb, and we
didn't have code to remove it explicitly.
It's better not to write it in the first place.
We noticed that tree composes failed with a missing `atomic` package,
when really what happend is Fedora 22 was released and the repo
metadata moved from `development/` to `released/`.
See https://github.com/hughsie/libhif/pull/47
- Can also give you a file descriptor
- Takes a constant string as input, returning a mutated string as a
separate variable which means that one can check whether the variable
is `NULL` to know whether or not one needs to `rm -rf` it on error
paths.
