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
Now that c-lightning is in the FreeBSD ports system (\o/)
update the installation instructions, which basically boil down
to just `pkg install c-lightning`.
Changelog-None
Before this change `make` would build everything but the docs.
They would be built during `make install` which is unexpected.
Add a dependency to `doc-all` to the `default` target so that docs are
build together with the rest of the programs. Leave the `install-data`
as is, to still build the docs if they are not built yet during install.
Changelog-None
`wallet_payment_store` would free the `wallet_payment` instance which would
then cause us to reload it from the DB. Instead of doing the store->free->load
dance we now tell `wallet_payment_store` whether it should take ownership and
leave it alone if not.
Passing the payment around instead of referencing it through payment_hash and
partid is a nice side-effect.
`wallet_payment_store` frees the unstored payment after it has stored it, but
we still need that instance for our notifications. This is the smallest
possible fix, but I plan to refactor this out.
Changelog-Changed: plugin: `notify_sendpay_success` and `notify_sendpay_failure` are now always called, even if there is no command waiting on the result.
We clone the test above, but this time we don't attach waiters (they'd be racy
anyway), and we wait for the notification to be called. This fails, but is
fixed in the next two commits.
TIL: `rename` doesn't like its source and target to be on different
partitions. This was causing the `hsmtool` tests to fail whenever we ran them
on a different partition than the lightning-dir (e.g., `/dev/shm` for faster
testing), because we made the backup copy in the current working directory.
This changes this and creates the backup next to the original file, which has
a reasonable chance to be on the same partition.
Changelog-Changed: hsmtool: The `hsmtool` now creates its backup copy in the same directory as the original `hsm_secret` file.
Valgrind doesn't really like crashes if compiled without DEVELOPER since that
seems to compile out the debug symbols, resulting in the following error:
```
Optimistic lock on the database failed. There may be a concurrent access to the database. Aborting since concurrent access is unsafe.
lightningd: FATAL SIGNAL 6 (version 0.0.99)
lightningd/lightningd: libbacktrace: no debug info in ELF executable
lightningd/lightningd: libbacktrace: no debug info in ELF executable
lightningd/lightningd: libbacktrace: no debug info in ELF executable
lightningd/lightningd: libbacktrace: no debug info in ELF executable
lightningd/lightningd: libbacktrace: no debug info in ELF executable
lightningd/lightningd: libbacktrace: no debug info in ELF executable
lightningd/lightningd: libbacktrace: no debug info in ELF executable
lightningd/lightningd: libbacktrace: no debug info in ELF executable
lightningd/lightningd: libbacktrace: no debug info in ELF executable
lightningd/lightningd: libbacktrace: no debug info in ELF executable
lightningd/lightningd: libbacktrace: no debug info in ELF executable
lightningd/lightningd: libbacktrace: no debug info in ELF executable
lightningd/lightningd: libbacktrace: no debug info in ELF executable
lightningd: FATAL SIGNAL 11 (version 0.0.99)
lightningd/lightningd: libbacktrace: no debug info in ELF executable
lightningd/lightningd: libbacktrace: no debug info in ELF executable
lightningd/lightningd: libbacktrace: no debug info in ELF executable
lightningd/lightningd: libbacktrace: no debug info in ELF executable
2020-01-07 15:26:03.539 EST [11583] LOG: unexpected EOF on client connection with an open transaction
--------------------------- Captured stdout teardown ---------------------------
DEBUG:root:Calling stop with payload None
------------------------------- Valgrind errors --------------------------------
Valgrind error file: valgrind-errors.11409
==11409== Jump to the invalid address stated on the next line
==11409== at 0x0: ???
==11409== by 0x1C00A8: backtrace_full (backtrace.c:127)
==11409== by 0x147B0A: send_backtrace (daemon.c:46)
==11409== by 0x147B55: crashdump (daemon.c:54)
==11409== by 0x6071F1F: ??? (in /lib/x86_64-linux-gnu/libc-2.27.so)
==11409== by 0x6071E96: __libc_signal_restore_set (nptl-signals.h:80)
==11409== by 0x6071E96: raise (raise.c:48)
==11409== by 0x6073800: abort (abort.c:79)
==11409== by 0x12B2FF: fatal (log.c:819)
==11409== by 0x16FA3B: db_data_version_incr (db.c:826)
==11409== by 0x16FA9E: db_commit_transaction (db.c:841)
==11409== by 0x124D20: io_loop_with_timers (io_loop_with_timers.c:34)
==11409== by 0x129260: main (lightningd.c:860)
==11409== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==11409==
==11409==
==11409== Process terminating with default action of signal 11 (SIGSEGV)
==11409== Bad permissions for mapped region at address 0x0
==11409== at 0x0: ???
==11409== by 0x1C00A8: backtrace_full (backtrace.c:127)
==11409== by 0x147B0A: send_backtrace (daemon.c:46)
==11409== by 0x147B55: crashdump (daemon.c:54)
==11409== by 0x6071F1F: ??? (in /lib/x86_64-linux-gnu/libc-2.27.so)
--------------------------------------------------------------------------------
```
The tor proxy might want auth 0x2 or answer what ever not defined
in https://tools.ietf.org/html/rfc1928.
Changelog-Fixed: TOR: We don't send any further request if the return code of connect is not zero or error.
Signed-off-by: Saibato <saibato.naga@pm.me>
For example:
"Tor connect out for host example.com error: 4 "
becomes:
"Error connecting to example.com: Tor server reply: host unreachable"
Also clarify the error:
"Connected out for example.com error"
to:
"Connected out for example.com error: authentication required"
because the only reason it could have failed is that the Tor socks5
server did not like any of our proposed auth methods and we only
proposed "no auth".
Changelog-None
This lets us do more flexible filtering in the next patch. But it also
keeps some weird logic out of gossipd.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The optimistic lock prevents multiple instances of c-lightning making
concurrent modifications to the database. That would be unsafe as it messes up
the state in the DB. The optimistic lock is implemented by checking whether a
gated update on the previous value of the `data_version` actually results in
an update. If that's not the case the DB has been changed under our feet.
The lock provides linearizability of DB modifications: if a database is
changed under the feet of a running process that process will `abort()`, which
from a global point of view is as if it had crashed right after the last
successful commit. Any process that also changed the DB must've started
between the last successful commit and the unsuccessful one since otherwise
its counters would not have matched (which would also have aborted that
transaction). So this reduces all the possible timelines to an equivalent
where the first process died, and the second process recovered from the DB.
This is not that interesting for `sqlite3` where we are also protected via the
PID file, but when running on multiple hosts against the same DB, e.g., with
`postgres`, this protection becomes important.
Changelog-Added: DB: Optimistic logging prevents instances from running concurrently against the same database, providing linear consistency to changes.
This increments the `data_version` upon committing dirty transactions, reads
the last data_version upon startup, and tracks the number in memory in
parallel to the DB (see next commit for rationale).
Changelog-Changed: JSON-RPC: Added a `data_version` field to the `db_write` hook which returns a numeric transaction counter.
Recent FreeBSD versions use LLVM's lld as a linker, not the GNU ld.
Their behavior slightly differs, so adapt the build system to handle
either one.
* The LLVM's linker prints "undefined symbol:" instead of
"undefined reference to". Tweak tools/mockup.sh to also look for that
message.
* The LLVM's linker may only print the first dozen errors (omitting
the rest to avoid flooding the screen). tools/update-mocks.sh relies
on getting all errors as it extracts the missing symbols' names from
the error output and creates mocks for them. Detect if errors were
omitted and re-run, telling the linker to not omit any. The GNU linker
does not support -error-limit=0, so unfortunately we can't just run
with that option unconditionally from the first attempt.
* Nit: FreeBSD's sed(1) prints "t" for "\t" instead of a horizontal tab.
Use a verbatim tab in the command, instead of "\t" which works on
both.
Changelog-Fixed: Developer mode compilation on FreeBSD.
Some Linux OSs impose a length limit on the path a Unix socket may have. This
is not an issue in `lightningd` since we `chdir()` into that directory before
opening the socket, however in pyln this became a problem for some tests,
since we use absolute paths in the testing framework. It's also a rather
strange quirk to expose to users.
This patch introduces a `UnixSocket` abstraction that attempts to work around
these limitations by aliasing the directory containing the socket into
`/proc/self/fd` and then connecting using that alias.
It was inspired by Open vSwitch code here https://github.com/openvswitch/ovs/blob/master/python/ovs/socket_util.py
Signed-off-by: Christian Decker <@cdecker>
We were indiscriminately accessing the `__annotations__` which could cause
issues if the function had been wrapped by some functions such as
`functools.partial`. This just checks that the access is safe before doing it.
Suggested-by: jarret <@jarret>
Signed-off-by: Christian Decker <@cdecker>
