Replace `json_to_double()` (which uses `strtod(3)`) with our own
floating-point parsing function `json_to_millionths()` that
specifically expects to receive such a number that can fit in a
64 bit integer after being multiplied by 1 million.
The main piece of the code in this patch comes from
https://github.com/ElementsProject/lightning/pull/3535#discussion_r381041419
Changelog-None
Before this patch we used to send `double`s over the wire by just
copying them. This is not portable because the internal represenation
of a `double` is implementation specific.
Instead of this, multiply any floating-point numbers that come from
the outside (e.g. JSONs) by 1 million and round them to integers when
handling them.
* Introduce a new param_millionths() that expects a floating-point
number and returns it multipled by 1000000 as an integer.
* Replace param_double() and param_percent() with param_millionths()
* Previously the riskfactor would be allowed to be negative, which must
have been unintentional. This patch changes that to require a
non-negative number.
Changelog-None
Instead of making it ourselves, lightningd does it. Now we only have
two cases of failed htlcs: completely malformed (BADONION), and with
an already-wrapped onion reply to send.
This makes channeld's job much simpler.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Most is taken from lightningd/bitcoind and adapted. This currently
exposes 5 commands:
- `getchaininfo`, currently called at startup to check the network and
whether we are on IBD.
- `getrawblockbyheight`, which basically does the `getblockhash` +
`getblock` trick.
- `getfeerate`
- `sendrawtransaction`
- `getutxout`, used to gather infos about an output and currently used by
`getfilteredblock` in `lightningd/bitcoind`.
Didn't generally fixup inside comments and the bech32 code: reformatting that
is just anti-social.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Otherwise you can ask for a sub-millisatoshi amount, which is dumb and
violates the spec.
See-also: https://github.com/lightningnetwork/lightning-rfc/pull/736
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Changed: We now reject invoices which ask for sub-millisatoshi amounts
This pass to json_stream helpers for commands outputs, but keeps
compatibility with existing plugins which use jout as of now, by not
starting/closing the "result"/"error" objects.
Now that we have json_stream in common/, we can move all the related
helpers from lightningd/json to common/json. This way everyone can
benefit of them (including libplugin, the plugins themselves,
potentially lightning-cli), not lightningd alone!
Note that the Makefile of the common/test/ had to be modified, because
the new helpers make use of common/wireaddr... Which turns out to
\#include <lightingd/lightningd.h> ! So we couldnt just include the .c
and add mocks if we redefined some structs (hello run-param).
This sets the nLockTime to the tip (and accordingly each input's nSequence to
0xfffffffe) for withdrawal transactions.
Even if the anti fee-sniping argument might not be valid until some time yet,
this makes our regular wallet transactions far less distinguishable from
bitcoind's ones since it now defaults to using native Segwit transactions
(like us). Moreover other wallets are likely to implement this (if they
haven't already).
Changelog-Added: wallet: withdrawal transactions now sets nlocktime to the current tip.
GCC 10 defaults to `-fno-common`. no longer automatically sharing
global variable definitions, which makes it important to define
them in only one place (otherwise there will be duplicate definition
errors). Add `extern` qualifiers where (I think) is the best place for
them.
We also update since the merged version sets feature bit 9 (as it's
supposed to now that we tied that to payment_secret).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We tag them with specific versions when they're experimental,
but do a poor job of cleaning them up (and thus ensuring they're
checked!) afterwards.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Before this patch we used `int` for error codes. The problem with
`int` is that we try to pass it to/from wire and the size of `int` is
not defined by the standard. So a sender with 4-byte `int` would write
4 bytes to the wire and a receiver with 2-byte `int` (for example) would
read just 2 bytes from the wire.
To resolve this:
* Introduce an error code type with a known size:
`typedef s32 errcode_t`.
* Change all error code macros to constants of type `errcode_t`.
Constants also play better with gdb - it would visualize the name of
the constant instead of the numeric value.
* Change all functions that take error codes to take the new type
`errcode_t` instead of `int`.
* Introduce towire / fromwire functions to send / receive the newly added
type `errcode_t` and use it instead of `towire_int()`.
In addition:
* Remove the now unneeded `towire_int()`.
* Replace a hardcoded error code `-2` with a new constant
`INVOICE_EXPIRED_DURING_WAIT` (903).
Changelog-Changed: The waitinvoice command would now return error code 903 to designate that the invoice expired during wait, instead of the previous -2
We could use sendonion to do this, but it actually takes a different path through
pay, and I wanted to test all of it, so I made a new dev flag.
We currently get upset with the response:
lightningd/pay.c:556: payment_failed: Assertion `!hout->failcode' failed.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is mainly meant as a marker so that we can later remove the code if we
decide to make the handling of custommsgs a non-developer option. It marks the
place that we would otherwise handle what in dev-mode is a custommsg.
Fixes: #3192
Changelog-Added: `waitanyinvoice` now supports a `timeout` parameter, which when set will cause the command to fail when the timeout is reached; can set this to 0 to fail immediately if no new invoice has been paid yet.
The number of outputs got updated, but the map used to calculate the
change output's location did not (still assumes only one output). This
patch fixes this to make the output map a variable size.
Changelog-Fixed: JSON API: `txprepare` no longer crashes when more than two outputs are specified
Generally I prefer structures over u8, since the size is enforced at
runtime; and in several places we were doing conversions as the code
using Sphinx does treat struct secret as type of the secret.
Note that passing an array is the same as passing the address, so
changing from 'u8 secret[32]' to 'struct secret secret' means various
'secret' parameters change to '&secret'. Technically, '&secret' also
would have worked before, since '&' is a noop on array, but that's
always seemed a bit weird.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This makes it clear we're dealing with a message which is a wrapped error
reply (needing unwrap_onionreply), not an already-wrapped one.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
I really want a type which means "I am a wrapped onion reply" as separate
from "I am a normal wire msg". Currently both user u8 *, and I got very
confused trying to figure out where each one was an unwrapped error msg,
or where it still needed (un)wrapping.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Add "peer not connected" and "unknown peer" as error codes, so that
users can check against numeric error codes instead of textual error
messages.
Will ease https://github.com/ElementsProject/lightning/issues/3366
Changelog-None
We still close the channel if we *send* an error, but we seem to have hit
another case where LND sends an error which seems transient, so this will
make a best-effort attempt to preserve our channel in that case.
Some test have to be modified, since they don't terminate as they did
previously :(
Changelog-Changed: quirks: We'll now reconnect and retry if we get an error on an established channel. This works around lnd sending error messages that may be non-fatal.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Thanks to @t-bast, who made this possible by interop testing with Eclair!
Changelog-Added: Protocol: can now send and receive TLV-style onion messages.
Changelog-Added: Protocol: can now send and receive BOLT11 payment_secrets.
Changelog-Added: Protocol: can now receive basic multi-part payments.
Changelog-Added: RPC: low-level commands sendpay and waitsendpay can now be used to manually send multi-part payments.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
These used to be necessary as we could have feerate changes which
we couldn't track: now we do, we don't need these flags.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is an intermediary step: we still don't save it to the database,
but we do use the fee_states struct to track it internally.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This uses the same state machine as HTLCs, but they're only
ever added, not removed. Since we can only have one in each
state, we use a simple array; mostly NULL.
We could make this more space-efficient by folding everything into the
first 5 states, but that would be more complex than just using the
identical state machine.
One subtlety: we don't send uncommitted fee_states over the wire.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Now "raw_payload" is always the complete string (including realm or length
bytes at the front).
This has several effects:
1. We can receive an decrypt an onion which is grossly malformed.
2. We can still hand this to the htlc_accepted hook.
3. We then fail it unless the htlc_accepted accepts it manually.
4. The createonion API now takes the raw payload, and does not know
anything about "style".
The only caveat is that the sphinx code needs to know the payload
length: we have a call for that, which simply tells it to copy the
entire onion (and treat us as the final node) if it's invalid.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We want to have a static Tor service created from a blob bound to
our node on cmdline
Changelog-added: persistent Tor address support
Changelog-added: allow the Tor inbound service port differ from 9735
Signed-off-by: Saibato <saibato.naga@pm.me>
Add base64 encode/decode to common
We need this to encode the blob for the tor service
Signed-off-by: Saibato <saibato.naga@pm.me>
This is what provides us with the ability to add custom fields in the payload
when using `createonion` so make sure we actually have access to it.
Changelog-Changed: The TLV payloads for the onion packets are no longer considered an experimental feature and generally available.
Changelog-Added: Plugins may now handle modern TLV-style payloads via the `htlc_accepted` hook
Signed-off-by: Christian Decker <@cdecker>
These are useful for the `createonion` JSON-RPC we're going to build next. The
secret is used for the optional `session_key` while the hex-encoded binary is
used for the `assocdata` field to which the onion commits. The latter does not
have a constant size, hence the raw binary conversion.
The spec is (RSN!) going to explicitly denote where each feature should
be presented, so create that infrastructure.
Incorporate the new proposed bolt11 features, which need this.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We don't set the secret to compulsory (yet!) but put code in for the
future. Meanwhile, if there is a secret, check it is correct.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This was decided at a recent spec meeting: in particular, mpp and
var_onion_optin options will be used here.
We enhanced "features_supported" into "features_unsupported" so it
can return the first un-handlable bit number.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Also pulls in a new onion error (mpp_timeout). We change our
route_step_decode_end() to always return the total_msat and optional
secret.
We check total_amount (to prohibit mpp), but we do nothing with
secret for now other than hand it to the htlc_accepted hook.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
1. "conf" can't be specified in a configuration file.
2. "lightning-dir" can't be specified in a configuration file unless the file
was explicitly set with --conf=.
3. "network" options can't be set in a per-network configuration file.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-changed: .lightningd plugins and files moved into <network>/ subdir
Changelog-changed: WARNING: If you don't have a config file, you now may need to specify the network to lightning-cli
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This lets you have a default, but also a network-specific config.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-changed: Options: `config` and <network>/`config` read by default.
lightning-cli is going to need to know what network we're on, so
it will need to parse the config files. Move the code which does
the initial bootstrap parsing into common, as well as the config
file parsing core.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We have consolidated the two functions into a single `route_step_decode`
function, and made it static since we call it in the `process_onionpacket`
function. We remove the two exposed functions since they're no longer useful.
We wire in the code-generated function, which removes the upfront validation
and add the validation back after the `htlc_accepted` hook returns. If a
plugin wanted to handle the onion in a special way it'll not have told us to
just continue.
So far we've only handled legacy payloads, which meant we could drop the realm
byte since it was always 0x00. Once we start handling TLV payloads the first
byte, i.e., the former realm byte, is important since it gives us the length
of the payload. This is a breaking change, however I don't think there's
anyone using the `raw_payload` as of yet.
Changelog-Changed: JSON-RPC: the `raw_payload` now includes the first byte, i.e., the realm byte, of the payload as well. This allows correct decoding of a TLV payload in the plugins.
This simplifies our tests, too, since we don't need a magic option to
enable io logging in subdaemons.
Note that test_bad_onion still takes too long, due to a separate minor
bug, so that's marked and left dev-only for now.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is ignored in subdaemons which are per-peer, but very useful for
multi-peer daemons like connectd and gossipd.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-changed: JSON API: `htlc_accepted` hook has `type` (currently `legacy` or `tlv`) and other fields directly inside `onion`.
Changelog-deprecated: JSON API: `htlc_accepted` hook `per_hop_v0` object deprecated, as is `short_channel_id` for the final hop.
If you're replaying or syncing with the blockchain, show that error
instead of 'cannot afford', in the case of not having enough utxos
to pay for a transaction. This is the 'more correct' error to show, as
there's a chance that the funds you're expecting to spend are in the
portion of the blockchain that hasn't been synced yet.
Rusty Russell
Vasil Dimov
darosior
Christian Decker
Ken Sedgwick
Wladimir J. van der Laan
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lisa neigut
Saibato
gorazdko
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