This is a best effort attempt to skip connection attempts if we detect a broken
ISP resolver. A broken ISP resolver is a resolver that will replace NXDOMAIN
replies with a dummy response. This is best effort in that it'll only detect a
single fixed dummy reply, it'll check only on startup, and will not detect if we
switched networks. It should be good enough for most cases, and in the worst
case it will result in a connection attempt that does not complete.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
Reported-by: Glenn Willen <@gwillen>
New codes: FUND_MAX_EXCEEDED, FUND_CANNOT_AFFORD, FUND_DUST_LIMIT_UNMET.
The error message "Cannot afford fee" was not exactly correct because
it would also occur if the amount requested could not be afforded. So
I changed it to the more generic "Cannot afford transaction".
Other things:
* Fixed off-by-one satoshi in fundchannel manpage.
* Changed 'arror' to 'error' because we are not pirates.
2018-06-14T01:09:03.495Z lightningd(23766): HSM: created new hsm_secret file
==23785== Syscall param socketcall.bind(my_addr.sin6_flowinfo) points to uninitialised byte(s)
==23785== at 0x5731877: bind (syscall-template.S:78)
==23785== by 0x11767C: make_listen_fd (gossip.c:2405)
==23785== by 0x117DA2: handle_wireaddr_listen (gossip.c:2558)
==23785== by 0x1183B7: setup_listeners (gossip.c:2653)
==23785== by 0x118E86: gossip_activate (gossip.c:2871)
==23785== by 0x11AC42: recv_req (gossip.c:3543)
==23785== by 0x143FF1: next_plan (io.c:59)
==23785== by 0x144AEE: do_plan (io.c:387)
==23785== by 0x144B2C: io_ready (io.c:397)
==23785== by 0x146719: io_loop (poll.c:310)
==23785== by 0x11B0B0: main (gossip.c:3687)
==23785== Address 0x1ffeffffa4 is on thread 1's stack
==23785== in frame #2, created by handle_wireaddr_listen (gossip.c:2539)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Until now, `command_fail()` reported an error code of -1 for all uses.
This PR adds an `int code` parameter to `command_fail()`, requiring the
caller to explicitly include the error code.
This is part of #1464.
The majority of the calls are used during parameter validation and
their error code is now JSONRPC2_INVALID_PARAMS.
The rest of the calls report an error code of LIGHTNINGD, which I defined to
-1 in `jsonrpc_errors.h`. The intention here is that as we improve our error
reporting, all occurenaces of LIGHTNINGD will go away and we can eventually
remove it.
I also converted calls to `command_fail_detailed()` that took a `NULL` `data`
parameter to use the new `command_fail()`.
The only difference from an end user perspecive is that bad input errors that
used to be -1 will now be -32602 (JSONRPC2_INVALID_PARAMS).
1. We need to test all bits, not all bytes.
2. Both local and global features need to be supported.
3. Untested code is broken code.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Tor wasn't actually working for me to connect to anything, but it worked
for 'ssh -D' testing.
Note that the resulting 'netaddr' is a bit weird, but I guess it's honest.
$ ./cli/lightning-cli connect 021f2cbffc4045ca2d70678ecf8ed75e488290874c9da38074f6d378248337062b
{
"id": "021f2cbffc4045ca2d70678ecf8ed75e488290874c9da38074f6d378248337062b"
}
$ ./cli/lightning-cli listpeers
{
"peers": [
{
"state": "GOSSIPING",
"id": "021f2cbffc4045ca2d70678ecf8ed75e488290874c9da38074f6d378248337062b",
"netaddr": [
"ln1qg0je0lugpzu5ttsv78vlrkhteyg9yy8fjw68qr57mfhsfyrxurzkq522ah.lseed.bitcoinstats.com:9735"
],
"connected": true,
"owner": "lightning_gossipd"
}
]
}
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is useful for the next patch, where we want to hand the unresolved
name through to the proxy.
This also addresses @Saibato's worry that we still called getaddrinfo()
(with the AI_NUMERICHOST option) even if we didn't want a lookup.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This means it will effect connect commands too (though it's too
late to stop DNS lookups caused by commandline options).
We also warn that this is one case where we allow forcing through Tor
without a proxy set: it just means all connections will fail.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This takes the Tor service address in the same option, rather than using
a separate one. Gossipd now digests this like any other type.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
For the moment, this is a straight handing of current parameters through
from master to the gossip daemon. Next we'll change that.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Currently it's always for messages to peer: make that status_peer_io and
add a new status_io for other IO.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Risks leakage. We could do lookup via the proxy, but that's a TODO.
There's only one occurance of getaddrinfo (and no gethostbyname), so
we add a flag to the callers.
Note: the use of --always-use-proxy suppresses *all* DNS lookups, even
those from connect commands and the command line.
FIXME: An implicit setting of use_proxy_always is done in gossipd if it
determines that we are announcing nothing but Tor addresses, but that
does *not* suppress 'connect'.
This is fixed in a later patch.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
And use it in wireaddr.
We fix up the double '.onion' in the test case, which seems like an error?
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is simply the code to set up the automatic hidden service, so move
it into lightningd.
I removed the undefined parse_tor_wireaddr, and added a parameter name
to the create_tor_hidden_service_conn() declaration for update-mocks.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
All gossipd needs from common/tor is do_we_use_tor_addr(), so move
that and the rest of the tor-specific handshake code into gossip/tor.c
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is a rebased and combined patch for Tor support. It is extensively
reworked in the following patches, but the basis remains Saibato's work,
so it seemed fairest to begin with this.
Minor changes:
1. Use --announce-addr instead of --tor-external.
2. I also reverted some whitespace and unrelated changes from the patch.
3. Removed unnecessary ';' after } in functions.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
on all platforms;
because of that BUILD_ASSERT was failing on macOS.
(on macOS "sizeof(sun->sun_path) == 104" and
"sizeof(addr->u.sockname) == 108")
[ Linux man page says it can be as small as 92, so let's use the real value.
I also cleaned up the incorrect comment order on that struct! --RR ]
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Someone could try to announce an internal address, and we might probe
it.
This breaks tests, so we add '--dev-allow-localhost' for our tests, so
we don't eliminate that one. Of course, now we need to skip some more
tests in non-developer mode.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
If we're given a wildcard address, we can't announce it like that: we need
to try to turn it into a real address (using guess_address). Then we
use that address. As a side-effect of this cleanup, we only announce
*any* '--addr' if it's routable.
This fix means that our tests have to force '--announce-addr' because
otherwise localhost isn't routable.
This means that gossipd really controls the addresses now, and breaks
them into two arrays: what we bind to, and what we announce. That is
now what we return to the master for json_getinfo(), which prints them
as 'bindings' and 'addresses' respectively.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
1. Add special option where an empty host means 'wildcard for IPv4 and/or IPv6'
which means ':1234' can be used to set only the portnum.
2. Only add this protocol wildcard if --autolisten=1 (default)
and no other addresses specified.
3. Pass it down to gossipd, so it can handle errors correctly: in most cases,
it's fatal not to be able to bind to a port, but for this case, it's OK
if we can only bind to one of IPv4/v6 (fatal iff neither).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This was something @icota implemented, but it fits logically into this
cleanup series. We create a new type which is the internal generalization
of a wireaddr (which is defined by the spec), and add a case here for
a socket name.
Based-on-the-true-story-by: @icota
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
It's become clear that our network options are insufficient, with the coming
addition of Tor and unix domain support.
Currently:
1. We always bind to local IPv4 and IPv6 sockets, unless --port=0, --offline,
or any address is specified explicitly. If they're routable, we announce.
2. --addr is used to announce, but not to control binding.
After this change:
1. --port is deprecated.
2. --addr controls what we bind to and announce.
3. --bind-addr/--announce-addr can be used to control one and not the other.
4. Unless --autolisten=0, we add local IPv4 & IPv6 port 9735 (and announce if they are routable).
5. --offline still overrides listening (though announcing is still the same).
This means we can bind to as many ports/interfaces as we want, and for
special effects we can announce different things (eg. we're sitting
behind a port forward or a proxy).
What remains to implement is semi-automatic binding: we should be able
to say '--addr=0.0.0.0:9999' and have the address resolve at bind
time, or even '--addr=0.0.0.0:0' and have the port autoresolve too
(you could determine what it was from 'lightning-cli getinfo'.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
No new functionality, just a continuation of my work toward completing #665.
I removed the common members of `struct withdrawal` and `struct fund_channel`
and placed them in a new `struct wallet_tx`. Then it was fairly straightforward
to reimplement the existing code in terms of `wallet_tx`.
Since I made some structural changes I wanted to get this approved before I
go any farther.
Added 'all' to fundchannel help message.
This means that openingd and closingd now forward our gossip. But the real
reason we want to do this is that it gives an easy way for gossipd to kill
any active daemon, by closing its fd: previously closingd and openingd didn't
read the fd, so tended not to notice.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(This was sitting in my gossip-enchancement patch queue, but it simplifies
this set too, so I moved it here).
In 94711969f we added an explicit gossip_index so when gossipd gets
peers back from other daemons, it knows what gossip it has sent (since
gossipd can send gossip after the other daemon is already complete).
This solution is insufficient for the more general case where gossipd
wants to send other messages reliably, so replace it with the other
solution: have gossipd drain the "gossip fd" which the daemon returns.
This turns out to be quite simple, and is probably how I should have
done it originally :(
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
These were so far only used for bolt11 construction, but we'll need them for the
DNS seed as well, so here we just pull them out into their own unit and prefix
them.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
Christian Decker
Rusty Russell
Mark Beckwith
practicalswift
Saibato
Isidoro Ghezzi
ZmnSCPxj