We can call this multiple times. The best solution is to add and remove
the signature so it's always unsigned as we expect it.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The pay command in particular, attaches a reasonable number of
temporaries to cmd, knowing they'll be freed once cmd is done.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is called when we load from database: clearly our tests aren't thorough
enough because we were allocating and initializing `r` in an unused structure.
invs is also the owner already; functions which steal are a bit surprising
to callers, so we either document them, or just don't do it.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We have things which we don't keep a pointer to, but aren't leaks.
Some are simply eternal (eg. listening sockets), others cases are
io_conn tied to the lifetime of an fd, and timers which expire.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
memleak doesn't detect pointers to within an object, only pointers to their
exact address (it's simpler this way). Moving the linked list to the
top of the structure means it can follow the chain.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
memleak doesn't detect pointers to within an object, only pointers to their
exact address (it's simpler this way). Moving the linked list to the
top of the structure means it can follow the chain.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is not a child of cmd, since they have independent lifetimes, but
we don't want to noleak them all, since it's only the one currently in
progress (and its children) that we want to exclude.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We use the tal notifiers to attach a `backtrace` object on every
allocation.
This also means moving backtrace_state from log.c into lightningd.c, so
we can hand it to memleak_init().
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is a primitive mark-and-sweep-style garbage detector. The core is
in common/ for later use by subdaemons, but for now it's just lightningd.
We initialize it before most other allocations.
We walk the tal tree to get all the pointers, then search the `ld`
object for those pointers, recursing down. Some specific helpers are
required for hashtables (which stash bits in the unused pointer bits,
so won't be found).
There's `notleak()` for annotating things that aren't leaks: things
like globals and timers, and other semi-transients.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
jsonrpc handlers usually directly call command_success or
command_fail; not doing that implies they're waiting for something
async.
Put an explicit call (currently a noop) there, and add debugging
checks to make sure it's used.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Couldn't find a good place to put these messages, we probably want to
do the same capability based request routing that we did for the HSM,
but for now this just defines the message in the master messages file.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
If send_htlc_out() fails, it doesn't initialize pc->out; that can
make us think it's still in progress.
Reported-by: Jonas Nick
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
When gossipd sends a message, have a gossip_index. When it gets back a
peer, the current gossip_index is included, so it can know exactly where
it's up to.
Most of this is mechanical plumbing through openingd, channeld and closingd,
even though openingd and closingd don't (currently) read gossip, so their
gossip_index will be unchanged.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
All peers come from gossipd, and maintain an fd to talk to it. Sometimes
we hand the peer back, but to avoid a race, we always recreated it.
The race was that a daemon closed the gossip_fd, which made gossipd
forget the peer, then master handed the peer back to gossipd. We stop
the race by never closing the gossipfd, but hand it back to gossipd
for closing.
Now gossipd has to accept two fds, but the handling of peers is far
clearer.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
As demonstrated in the test at the end of this series, openingd dying
spontaneously causes the conn to be freed which causes the subd to be
destroyed, which fails the peer, which hits the db.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Rather than using the destructor, hook up the cmd so we can close it.
peers are allocated off ld, so they are only destroyed explicitly.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We are still generating only char* style aliases, but the field is
defined to be unicode, which doesn't mix too well with char.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
We don't use it yet, but now we'll decode correctly.
See: https://github.com/lightningnetwork/lightning-rfc/pull/317
lightning-rfc commit: ef053c09431442697ab46e83f9d3f86e3510a18e
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Change all calls to use the correct serialization and deserialization
functions, include the correct headers and remove the control
messages.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
The master now hands channeld either an error code, and channeld
generates the error message, or an error message relayed from another
node to pass through.
This doesn't fill in the channel_update yet: we need to wire up gossipd
to give us that.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Currently lightningd does this, but channeld is perfectly capable of doing it.
channeld is also in a far better position to add channel_updates to it.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
estimatesmartfee 4 ECONOMICAL was too high for lnd, so drop it, with some
increased security risk.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The filter is being populated while initializing the daemon and by
adding new keys as they are being generated. The filter is then used
in connect_block to identify transactions of interest.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
This is mainly used to filter for transactions that may be of interest
to us, i.e., whether one of our keys is the recipient. It currently
does onyl simple scriptpubkey checks, but will eventually be extended
to use bloomfilters and add more sophisticated checks.
For now the goal is to speed up the processing of blocks during startup.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
Rusty Russell
Christian Decker
practicalswift
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