Because we initalized plugin->io_rpc_conn *after* calling plugin->init,
send_outreq would do a (harmless, in our case) wakeup on an uninitialized address:
```
==1164079== Conditional jump or move depends on uninitialised value(s)
==1164079== at 0x1628FC: backend_wake (poll.c:227)
==1164079== by 0x160B98: io_wake (io.c:384)
==1164079== by 0x1160A8: ld_rpc_send (libplugin.c:255)
==1164079== by 0x1187E0: send_outreq (libplugin.c:1099)
==1164079== by 0x115041: init (xpay.c:1620)
```
Solution is simple: set plugin->io_rpc_conn to NULL, and don't wake it in this case.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The `send_outreq` function is a good place to suspend and resume
traces, since these are usually the places where we hand off control
back to the `io_loop`. This assumes that we do not continue doing
heavy liftin after we have queued an `outreq` call, but that is most
likely the case anyway. This frees us from having to track suspensions
whenever we call the RPC from a plugin.
Without knowing what method was called, we can't have useful general logging
methods, so go through the pain of adding "const char *method" everywhere,
and add:
1. ignore_and_complete - we're done when jsonrpc returned
2. log_broken_and_complete - we're done, but emit BROKEN log.
3. plugin_broken_cb - if this happens, fail the plugin.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
When we used to allow cmd to be NULL, we had to hand the plugin
everywhere. We no longer do.
1. Various jsonrpc_ functions no longer need the plugin arg.
2. send_outreq no longer needs a plugin arg.
3. The init function takes a command, not a plugin.
4. Remove command_deprecated_in_nocmd_ok.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is cleaner: everything can now be associated with a command
context.
You're supposed to eventually dispose of it using timer_complete().
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Sometimes we want to clean up *after* a command has completed, but
we're moving to a model where all libplugin operations require a
`struct command`. This adds `aux_command` to create an
independent-lifetime command with the same id.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This avoids globals (and means memleak traverses the variables!): we
only change over the test plugin though, to avoid unnecessary churn.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Currently make a plugin that do reportings of logs on
a services like graphana is not possible. So this commit
include the possibility to write a plugin that do the report
of this analisys.
Changelog-Added: core: notify plugins when a log line is emitted.
Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>
This means we can see the values in listconfigs, even if we haven't set
them yet.
In particular, we now see the following:
* autoclean-cycle.value_int=3600
* bitcoin-rpcclienttimeout.value_int=60
* bitcoin-retry-timeout.value_int=60
* funder-max-their-funding.value_str=4294967295sat
* funder-per-channel-min.value_str=10000sat
* funder-reserve-tank.value_str=0sat
* funder-fund-probability.value_int=100
Changelog-Changed: plugins: libplugin now shows plugin option default values (where they're non-trivial)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We need to pass through setconfig in check mode, then we need to have libplugin
add (and use!) a `check_only` parameter to all option setting.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: JSON-RPC: `check` `setconfig` on plugin options can now check the config value would be accepted.
We don't thoroughly handle `check setconfig`: it would be good to
allow this to do further checking!
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We want to extend it to plugins, and we want it to be allowed to be async for more power,
so rather than not completing the cmd if we're checking, do it in command_check_done()
and call it.
This is cleaner than the special case we had before, and allows check to us all the
normal jsonrpc mechanisms, especially async requests (which we'll need if we want to
hand check requests to plugins!).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Uncommited channels are missing several fields which would normally be
populated by an active channel. This simply skips them for the purposes
of finding a route. The particular culprit was:
{
"peer_id": "038cd9f3679d5b39bb2105978467918d549572de472f07dd729e37c7a6377d41d5",
"peer_connected": true,
"state": "OPENINGD",
"owner": "lightning_openingd",
"opener": "local",
"to_us_msat": 8317559000,
"total_msat": 8317559000,
"features": [
"option_static_remotekey",
"option_anchors_zero_fee_htlc_tx"
]
}
Fixes#7197 - SEGV in direct_pay_listpeerchannels when field private missing
Changelog-Fixed: Fixed crash in pay plugin caused by parsing uncommitted dual open channels
And we don't need to handle 0.9 lightningd which didn't include
allow-deprecated-apis in getmanifest call.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
In this case the cmd is `sql` but the field we're talking about is from
a different command, so we need a new libplugin API.
Note: there are still no deprecations in any tables used by `sql`, so this
is a bit moot for now.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This makes it easier to use outside simple subds, and now lightningd can
simply dump to log rather than returning JSON.
JSON formatting was a lot of work, and we only did it for lightningd, not for
subdaemons. Easier to use the logs in all cases.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Also requires us to expose memleak when !DEVELOPER, however we only
ever used the memleak tracking when the LIGHTNINGD_DEV_MEMLEAK
environment variable was set, so keep that.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We usually have access to `ld`, so avoid the global.
The only place generic code needs it is for the json command struct,
and that already has accessors: add one for libplugin and lightningd
to tell it if deprecated apis are OK.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
I added a plugin arg and was surprised that compile didn't break.
This is because typesafe_cb et al are conditional casts: if the type
isn't as expected it has no effect, but we're passing plugin_option() through
varargs, so everything is accepted!
Add a noop inline to check type, and fix up the two cases where we
used `const char *` instead of `char *`.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Previously, if these failed we always exited; once we have dymamic
configs this would be a (tiny) memory leak, so use tmpctx.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Don't parse the listpeers.channels output ourselves: with two extra fields
we can simply reuse json_to_listpeers_channels().
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Instead of returning a peers -> channels heirarchy, return (as callers
want!) a flat array of channels.
This is actually most of the transition work to make them work with
listpeerchannels.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We change the libplugin API so commando can provide its own ID base.
This id chaining enables much nicer diagnostics!
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
When called with `"id": 1` we replied with `"id": "1"`. lightningd doesn't
actually care, but it's weird.
Copy the entire token: this way we don't have to special case anything.
Also, remove the doubled test in json_add_jsonstr.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
