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Rebase forked master #4

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Rebase forked master #4

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dennisreimann
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Adds our two commits on top of the current Core Lightning master, so that we could publish a new version of our images.

Prerequisite for btcpayserver/btcpayserver-docker#664.

Applies cleanly to master.

bubelov and others added 30 commits August 31, 2022 12:16
We shadow local variables in several places: generally, these changes
make the code clearer.

Signed-off-by: Rusty Russell <[email protected]>
We annotate them with UNNEEDED, which is legal but weird, but it
makes gcc (at least 11.2.0) complain about shadowing:

	https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106424

I simply removed the names.

Signed-off-by: Rusty Russell <[email protected]>
This will warn us if there are local variables which shadow the
same-named variable.

Signed-off-by: Rusty Russell <[email protected]>
The test fails because the closed channel is deleted by the time we
check the state change history.

It is unnecessary to mine any blocks after the close, since the state
changes up to CLOSINGD_COMPLETE occur without onchain changes.
Merged a commit that broke everything with shadows, which turned out to
be the bookkeeper code.
This happens with deprecated-apis and listconfigs, breaking some
python plugins!

Fixes: ElementsProject#5546
Fixes: ElementsProject#5563
Signed-off-by: Rusty Russell <[email protected]>
Should help diagnose ElementsProject#5572
which hit the invalid csum on a >64MB entry, if it happens again.

Signed-off-by: Rusty Russell <[email protected]>
Here's the before-vs-after comparison (ignoring whitespace changes):

```diff
 --- /tmp/before	2022-07-20 21:52:44.336641810 +0930
 +++ /tmp/after	2022-07-20 21:55:54.355487769 +0930
 @@ -1,7 +1,7 @@
 -LIGHTNING-CLI(1)                                          lightning-cli                                         LIGHTNING-CLI(1)
 +LIGHTNING-CLI(1)                                                                                                LIGHTNING-CLI(1)
  
  NAME
 -       lightning-cli - Control lightning daemon
 +       lightning-cli -- Control lightning daemon
  
  SYNOPSIS
         lightning-cli [OPTIONS] command
 @@ -14,10 +14,7 @@
  
          --conf=PATH Sets configuration file (default: lightning-dir/config ).
  
 -        --network=network
 -        --mainnet
 -        --testnet
 -        --signet Sets network explicitly.
 +       --network=network --mainnet --testnet --signet Sets network explicitly.
  
          --rpc-file=FILE Named pipe to use to talk to lightning daemon: default is lightning-rpc in the lightning directory.
  
 @@ -43,8 +40,8 @@
  
          --version/-V Print version number to standard output and exit.
  
 -        allow-deprecated-apis=BOOL  Enable  deprecated options. It defaults to true, but you should set it to false when testing
 -       to ensure that an upgrade won't break your configuration.
 +       allow-deprecated-apis=BOOL Enable deprecated options. It defaults to true, but you should set it to false when testing to
 +       ensure that an upgrade won't break your configuration.
  
  COMMANDS
         lightning-cli simply uses the JSON RPC interface to talk to lightningd, and prints the results. Thus the commands  avail‐
 @@ -67,7 +64,7 @@
  
         lightning-cli help
  
 -              1.     Fund a 10k sat channel using uncomfirmed outputs
 +       2.     Fund a 10k sat channel using uncomfirmed outputs
  
         lightning-cli --keywords fundchannel id=028f...ae7d amount=10000sat minconf=0
  
 @@ -84,4 +81,4 @@
         Note: the modules in the ccan/ directory have their own licenses, but the rest of the code is covered  by  the  BSD-style
         MIT license.
  
 -                                                                                                                LIGHTNING-CLI(1)
 +Core Lightning v0.11.0.1-350-gac2e137                                                                           LIGHTNING-CLI(1)
```

Signed-off-by: Rusty Russell <[email protected]>
Fixes: ElementsProject#5437
I guessed it's called "lowdown" for everyone?

Signed-off-by: Rusty Russell <[email protected]>
There are no definition lists in Markdown, and lists get mangled if
they follow immediately: they need a line between them.

So use bullets for options, and use an indent so the text gets in the
line below.

Here's a before-and-after example:

```diff
 --- /tmp/after	2022-07-20 21:55:54.355487769 +0930
 +++ /tmp/after2	2022-07-20 21:58:17.305642576 +0930
 @@ -10,38 +10,71 @@
         lightning-cli sends commands to the lightning daemon.

  OPTIONS
 -       --lightning-dir=DIR Set the directory for the lightning daemon we're talking to; defaults to $HOME/.lightning.
 +       • --lightning-dir=DIR

 -       --conf=PATH Sets configuration file (default: lightning-dir/config ).
 +         Set the directory for the lightning daemon we're talking to; defaults to $HOME/.lightning.

 -       --network=network --mainnet --testnet --signet Sets network explicitly.
 +       • --conf=PATH

 -       --rpc-file=FILE Named pipe to use to talk to lightning daemon: default is lightning-rpc in the lightning directory.
 +         Sets configuration file (default: lightning-dir/config ).

 -       --keywords/-k Use format key=value for parameters in any order
 +       • --network=network

 -       --order/-o Follow strictly the order of parameters for the command
 +       • --mainnet

 -       --json/-J Return result in JSON format (default unless help command, or result contains a format-hint field).
 +       • --testnet

 -       --raw/-R Return raw JSON directly as lightningd replies; this can be faster for large requests.
 +       • --signet

 -       --human-readable/-H Return result in human-readable output.
 +         Sets network explicitly.

 -       --flat/-F  Return  JSON result in flattened one-per-line output, e.g. { "help": [ { "command": "check" } ] } would become
 +       • --rpc-file=FILE
 +
 +         Named pipe to use to talk to lightning daemon: default is lightning-rpc in the lightning directory.
 +
 +       • --keywords/-k
 +
 +         Use format key=value for parameters in any order
 +
 +       • --order/-o
 +
 +         Follow strictly the order of parameters for the command
 +
 +       • --json/-J
 +
 +         Return result in JSON format (default unless help command, or result contains a format-hint field).
 +
 +       • --raw/-R
 +
 +         Return raw JSON directly as lightningd replies; this can be faster for large requests.
 +
 +       • --human-readable/-H
 +
 +         Return result in human-readable output.
 +
 +       • --flat/-F
 +
 +         Return  JSON  result  in  flattened  one-per-line  output,  e.g.  {  "help":  [ { "command": "check" } ] } would become
         help[0].command=check.  This is useful for simple scripts which want to find a  specific  output  field  without  parsing
         JSON.

 -       --notifications/-N=LEVEL  If  LEVEL is 'none', then never print out notifications.  Otherwise, print out notifications of
 -       LEVEL or above (one of io, debug, info (the default), unusual or broken: they are prefixed with # .
 +       • --notifications/-N=LEVEL
 +
 +         If  LEVEL  is 'none', then never print out notifications.  Otherwise, print out notifications of LEVEL or above (one of
 +         io, debug, info (the default), unusual or broken: they are prefixed with # .
 +
 +       • --help/-h
 +
 +         Pretty-print summary of options to standard output and exit.  The format can be changed using -F, -R, -J, -H etc.
 +
 +       • --version/-V

 -       --help/-h Pretty-print summary of options to standard output and exit.  The format can be changed using -F,  -R,  -J,  -H
 -       etc.
 +         Print version number to standard output and exit.

 -       --version/-V Print version number to standard output and exit.
 +       • allow-deprecated-apis=BOOL

 -       allow-deprecated-apis=BOOL Enable deprecated options. It defaults to true, but you should set it to false when testing to
 -       ensure that an upgrade won't break your configuration.
 +         Enable deprecated options. It defaults to true, but you should set it to false when testing to ensure that  an  upgrade
 +         won't break your configuration.

  COMMANDS
         lightning-cli simply uses the JSON RPC interface to talk to lightningd, and prints the results. Thus the commands  avail‐
 @@ -60,13 +93,13 @@
         this is not encouraged.

  EXAMPLES
 -       1.     List commands
 +       1.     List commands:

 -       lightning-cli help
 +              • lightning-cli help

 -       2.     Fund a 10k sat channel using uncomfirmed outputs
 +       2.     Fund a 10k sat channel using uncomfirmed outputs:

 -       lightning-cli --keywords fundchannel id=028f...ae7d amount=10000sat minconf=0
 +              • lightning-cli --keywords fundchannel id=028f...ae7d amount=10000sat minconf=0

  BUGS
         This manpage documents how it should work, not how it does work. The pretty printing of results isn't pretty.
```

Signed-off-by: Rusty Russell <[email protected]>
You can't start a list without a paragraph separator.

```diff
 --- /tmp/before	2022-07-20 22:02:23.485372596 +0930
 +++ /tmp/after	2022-07-20 22:02:33.745528456 +0930
 @@ -21,12 +21,16 @@
         On startup of the daemon, no autoclean is set up.
  
  RETURN VALUE
 -       On success, an object is returned,  containing:  -  enabled  (boolean):
 -       whether invoice autocleaning is active
 +       On success, an object is returned, containing:
  
 -       If enabled is true: - expired_by (u64): how long an invoice must be ex‐
 -       pired (seconds) before we delete it - cycle_seconds (u64): how long  an
 -       invoice must be expired (seconds) before we delete it
 +       • enabled (boolean): whether invoice autocleaning is active
 +
 +       If enabled is true:
 +
 +       • expired_by (u64): how long an invoice must be expired  (seconds)  be‐
 +         fore we delete it
 +       • cycle_seconds  (u64):  how  long an invoice must be expired (seconds)
 +         before we delete it
  
  AUTHOR
         ZmnSCPxj <[email protected]> is mainly responsible.
```

Signed-off-by: Rusty Russell <[email protected]>
….py in SHASUMS)

1. If the tool changes, you need to regenerate since the output may
   change.

2. This didn't just filter that out, ignored all but the first
   dependency, which made bisecting the bookkeeper plugin a nightmare:
   it didn't regenerate the .po file, causing random crashes.

If we want this, try $(filter-out tools/fromschema.py) instead.  But I
don't think we want that.

Signed-off-by: Rusty Russell <[email protected]>
If there's only a single underscore, lowdown ignores it, but if there are multiple
(see min_final_cltv_expiry) it decides we're trying to highlight part of the word.

Reported-by: @wtogami
Signed-off-by: Rusty Russell <[email protected]>
People who copy paste the commands might not realize this chunk is not copy paste-able.
Requires us to update to latest lnproto which is now using the most up
to date python-bitcoinlib, as well as updating our python lock files
(which pin the grpcio deps, because of locking problems h/t @cdecker)
Few extremely minor updates to the ubuntu dockerfile and ci builds
Currently discovered IPs are only announced when we don't have any
usable addresses detected or configured already. However, the cli
command `getinfo` still showed theses unannounced addr as if they
were announced.

Changelog-Fixed: peer_control: getinfo showing unannounced addresses.
This one got badly messed up over time. I know we usually don't fix
these to have easier git-bisect. I can remove this commit if required.
This FIXME caught my eye, as it's wrong: TLVs are canonical, so they cannot
differ in bits and be equal.

The equality function needs to be written correctly, however, otherwise it
will crash!

Signed-off-by: Rusty Russell <[email protected]>
In particular, we didn't check the remote_addr in the init msg.

Signed-off-by: Rusty Russell <[email protected]>
Somehow we missed this deprecation, found by grep.

Changelog-Removed: JSON API: Removed double wrapping of `rpc_command` payload in `rpc_command` JSON field (deprecated v0.8.2)
Signed-off-by: Rusty Russell <[email protected]>
rustyrussell and others added 23 commits September 28, 2022 13:40
We still have an "enum forward_style" for the database, where old-style
forwards can still exist.

Signed-off-by: Rusty Russell <[email protected]>
Changelog-Removed: Protocol: we no longer forward HTLCs with legacy onions.
In particular, remove special routines to pull length: it's there,
take it and check it yourself.

Signed-off-by: Rusty Russell <[email protected]>
"sphinx_add_hop" takes a literal hop to include,
"sphinx_add_modern_hop" prepends the length.  Now we always prepend a
length, make it clear that the literal version is a shortcut:

* sphinx_add_hop -> sphinx_add_hop_has_length
* sphinx_add_modern_hop -> sphinx_add_hop

In addition, we check that length is actually correct!  This means
`createonion` can no longer create legacy or otherwise-invalid onions:
fix tests and update man page to remove legacy usage.

Signed-off-by: Rusty Russell <[email protected]>
Changelog-Changed: JSON-RPC: `createonion` no longer allows non-TLV-style payloads.
If a channel goes offline while the count of outstanding outgoing HTLCs
exceeds the limit that we enforce against the peer, then the channel
could never be brought online again because `add_htlc` called by
`channel_force_htlcs` in `channeld/full_channel.c` would return
`CHANNEL_ERR_TOO_MANY_HTLCS`. The protocol specification actually does
allow us to exceed the limits that we are enforcing against the peer;
we are only prohibited from exceeding the limits that the peer is
enforcing against us. `add_htlc` takes an `enforce_aggregate_limits`
parameter that appears to have been intended for `channel_force_htlcs`
to exempt the local node from obeying the limits that it is enforcing
against the peer, but this parameter was only being respected for the
total HTLC value-in-flight check but not for the HTLC count check. This
commit respects the parameter for the HTLC count check as well and
resolves the problem of "Could not restore HTLCs".

Fixes: ElementsProject#5636
Changelog-Fixed: channeld: Channel reinitialization no longer fails when the number of outstanding outgoing HTLCs exceeds `max_accepted_htlcs`.
This was missing in the last version
The goal here is to test the node validation, not whether we can
trigger the schema validation with bogus values. So we bypass the
verifying RPC wrapper.
…store`)

Changelog-Added: JSON-RPC: `makesecret` can take a string argument instead of hex.
Signed-off-by: Rusty Russell <[email protected]>
This reveals that common/test/run-bolt12_merkle-json.c was broken!

Signed-off-by: Rusty Russell <[email protected]>
Generate the payload in the callers.

Signed-off-by: Rusty Russell <[email protected]>
This makes it easier to add/delete fields manually to a bolt12 encoding.

Signed-off-by: Rusty Russell <[email protected]>
If we do, an upgrade would mean we can no longer get refunds on old
invoices.

Signed-off-by: Rusty Russell <[email protected]>
There's no secp256k1 routine to do this, but we're going to need it.

Signed-off-by: Rusty Russell <[email protected]>
It's been obsoleted and needs replacing; less confusing if we remove
it first.

Also, these fields are now present even without an expermintal build
(we'll control at runtime).

Signed-off-by: Rusty Russell <[email protected]>
We don't actually process onion messages here any more (they moved to
connectd), but the flag and object files were still linked.

Signed-off-by: Rusty Russell <[email protected]>
Mac is updating to using zsh in general.

The “for i in” reads strings with spaces as a single entry instead of multiple entries as sh did.

Using “while read” … “<<< $var” makes it treat each space as a new entry.

Changelog-None
Signed-off-by: Rusty Russell <[email protected]>
Changelog-Fixed: Plugins: `keysend` now removes unknown even (technically illegal!) fields, to try to accept more payments.
@dennisreimann
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@NicolasDorier is this worth integrating or shall we close it?

NicolasDorier pushed a commit that referenced this pull request Aug 24, 2023
This will fix a crash that I caused on armv7
and by looking inside the coredump with gdb
(by adding an assert on n that must be
different from null) I get the following stacktrace

```
(gdb) bt
\#0  0x00000000 in ?? ()
\#1  0x0043a038 in send_backtrace (why=0xbe9e3600 "FATAL SIGNAL 11") at common/daemon.c:36
\#2  0x0043a0ec in crashdump (sig=11) at common/daemon.c:46
\#3  <signal handler called>
\#4  0x00406d04 in node_announcement (map=0x938ecc, nann_off=495146) at common/gossmap.c:586
\ElementsProject#5  0x00406fec in map_catchup (map=0x938ecc, num_rejected=0xbe9e3a40) at common/gossmap.c:643
\ElementsProject#6  0x004073a4 in load_gossip_store (map=0x938ecc, num_rejected=0xbe9e3a40) at common/gossmap.c:697
\ElementsProject#7  0x00408244 in gossmap_load (ctx=0x0, filename=0x4e16b8 "gossip_store", num_channel_updates_rejected=0xbe9e3a40) at common/gossmap.c:976
\ElementsProject#8  0x0041a548 in init (p=0x93831c, buf=0x9399d4 "\n\n{\"jsonrpc\":\"2.0\",\"id\":\"cln:init#25\",\"method\":\"init\",\"params\":{\"options\":{},\"configuration\":{\"lightning-dir\":\"/home/vincent/.lightning/testnet\",\"rpc-file\":\"lightning-rpc\",\"startup\":true,\"network\":\"te"..., config=0x939cdc) at plugins/topology.c:622
\ElementsProject#9  0x0041e5d0 in handle_init (cmd=0x938934, buf=0x9399d4 "\n\n{\"jsonrpc\":\"2.0\",\"id\":\"cln:init#25\",\"method\":\"init\",\"params\":{\"options\":{},\"configuration\":{\"lightning-dir\":\"/home/vincent/.lightning/testnet\",\"rpc-file\":\"lightning-rpc\",\"startup\":true,\"network\":\"te"..., params=0x939c8c)
    at plugins/libplugin.c:1208
\ElementsProject#10 0x0041fc04 in ld_command_handle (plugin=0x93831c, toks=0x939bec) at plugins/libplugin.c:1572
\ElementsProject#11 0x00420050 in ld_read_json_one (plugin=0x93831c) at plugins/libplugin.c:1667
\ElementsProject#12 0x004201bc in ld_read_json (conn=0x9391c4, plugin=0x93831c) at plugins/libplugin.c:1687
\ElementsProject#13 0x004cb82c in next_plan (conn=0x9391c4, plan=0x9391d8) at ccan/ccan/io/io.c:59
\ElementsProject#14 0x004cc67c in do_plan (conn=0x9391c4, plan=0x9391d8, idle_on_epipe=false) at ccan/ccan/io/io.c:407
\ElementsProject#15 0x004cc6dc in io_ready (conn=0x9391c4, pollflags=1) at ccan/ccan/io/io.c:417
\ElementsProject#16 0x004cf8cc in io_loop (timers=0x9383c4, expired=0xbe9e3ce4) at ccan/ccan/io/poll.c:453
\ElementsProject#17 0x00420af4 in plugin_main (argv=0xbe9e3eb4, init=0x41a46c <init>, restartability=PLUGIN_STATIC, init_rpc=true, features=0x0, commands=0x6167e8 <commands>, num_commands=4, notif_subs=0x0, num_notif_subs=0, hook_subs=0x0, num_hook_subs=0, notif_topics=0x0, num_notif_topics=0) at plugins/libplugin.c:1891
\ElementsProject#18 0x0041a6f8 in main (argc=1, argv=0xbe9e3eb4) at plugins/topology.c:679
```

I do not know if this is a solution because I do not know
when I can parse a node announcement for a node that
it is not longer in the gossip map.

So, I hope this is just usefult for @rustyrussell

Changelog-Fixed: fixes `FATAL SIGNAL 11` on gossmap node announcement parsing.

Signed-off-by: Vincenzo Palazzo <[email protected]>
NicolasDorier pushed a commit that referenced this pull request Aug 24, 2023
The issue is that common_setup() wasn't called by the fuzz target,
leaving secp256k1_ctx as NULL.

UBSan error:

$ UBSAN_OPTIONS="print_stacktrace=1:halt_on_error=1" \
    ./fuzz-channel_id crash-1575b41ef09e62e4c09c165e6dc037a110b113f2

INFO: Running with entropic power schedule (0xFF, 100).
INFO: Seed: 1153355603
INFO: Loaded 1 modules   (25915 inline 8-bit counters): 25915 [0x563bae7ac3a8, 0x563bae7b28e3),
INFO: Loaded 1 PC tables (25915 PCs): 25915 [0x563bae7b28e8,0x563bae817c98),
./fuzz-channel_id: Running 1 inputs 1 time(s) each.
Running: crash-1575b41ef09e62e4c09c165e6dc037a110b113f2
bitcoin/pubkey.c:22:33: runtime error: null pointer passed as argument 1, which is declared to never be null
external/libwally-core/src/secp256k1/include/secp256k1.h:373:3: note: nonnull attribute specified here
    #0 0x563bae41e3db in pubkey_from_der bitcoin/pubkey.c:19:7
    #1 0x563bae4205e0 in fromwire_pubkey bitcoin/pubkey.c:111:7
    #2 0x563bae46437c in run tests/fuzz/fuzz-channel_id.c:42:3
    #3 0x563bae2f6016 in LLVMFuzzerTestOneInput tests/fuzz/libfuzz.c:23:2
    #4 0x563bae20a450 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long)
    ElementsProject#5 0x563bae1f4c3f in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long)
    ElementsProject#6 0x563bae1fa6e6 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long))
    ElementsProject#7 0x563bae223052 in main (tests/fuzz/fuzz-channel_id+0x181052) (BuildId: f7f56e14ffc06df54ab732d79ea922e773de1f25)
    ElementsProject#8 0x7fa7fa113082 in __libc_start_main
    ElementsProject#9 0x563bae1efbdd in _start

SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior bitcoin/pubkey.c:22:33 in
NicolasDorier pushed a commit that referenced this pull request Aug 24, 2023
It is possible for db_column_bytes() to return 0 and for
db_column_blob() to return NULL even when db_column_is_null() returns
false. We need to short circuit in this case.

Detected by UBSan:

  db/bindings.c:479:12: runtime error: null pointer passed as argument 2, which is declared to never be null
  /usr/include/string.h:44:28: note: nonnull attribute specified here

  #0 0x95f117 in db_col_arr_ db/bindings.c:479:2
  #1 0x95ef85 in db_col_channel_type db/bindings.c:459:32
  #2 0x852c03 in wallet_stmt2channel wallet/wallet.c:1483:9
  #3 0x81f396 in wallet_channels_load_active wallet/wallet.c:1749:23
  #4 0x81f03d in wallet_init_channels wallet/wallet.c:1765:9
  ElementsProject#5 0x72f1f9 in load_channels_from_wallet lightningd/peer_control.c:2257:7
  ElementsProject#6 0x672856 in main lightningd/lightningd.c:1121:25
NicolasDorier pushed a commit that referenced this pull request Aug 24, 2023
Fixes nullability errors detected by UBSan:

wire/fromwire.c:173:46: runtime error: null pointer passed as argument 1, which is declared to never be null
external/libwally-core/src/secp256k1/include/secp256k1.h:432:3: note: nonnull attribute specified here
    #0 0x65214a in fromwire_secp256k1_ecdsa_signature wire/fromwire.c:173:6
    #1 0x659500 in printwire_secp256k1_ecdsa_signature devtools/print_wire.c:331:1
    #2 0x646ba2 in printwire_channel_update wire/peer_printgen.c:1900:7
    #3 0x637182 in printpeer_wire_message wire/peer_printgen.c:128:11
    #4 0x65a097 in main devtools/decodemsg.c:85:10
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