core-lightning/common/peer_failed.c
Rusty Russell 443082ba98 common: add peer_failed_warn_nodisconnect routine for non-disconnecting warnings
We generalize the current df-only "aborted" flag (and invert it) to a
"disconnected" flag in the peer status message.

We convert it back to the aborted flag for now inside subd.c, but that's
next.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2023-10-23 15:48:50 +10:30

111 lines
2.5 KiB
C

#include "config.h"
#include <assert.h>
#include <ccan/breakpoint/breakpoint.h>
#include <ccan/tal/str/str.h>
#include <common/peer_billboard.h>
#include <common/peer_failed.h>
#include <common/peer_io.h>
#include <common/peer_status_wiregen.h>
#include <common/status.h>
#include <common/status_wiregen.h>
#include <common/wire_error.h>
/* Fatal error here, return peer control to lightningd */
void NORETURN
peer_fatal_continue(const u8 *msg TAKES, const struct per_peer_state *pps)
{
int reason = fromwire_peektype(msg);
breakpoint();
status_send(msg);
status_send_fd(pps->peer_fd);
exit(0x80 | (reason & 0xFF));
}
/* We only support one channel per peer anyway */
static void NORETURN
peer_failed(struct per_peer_state *pps,
bool disconnect,
bool warn,
const struct channel_id *channel_id,
const char *desc)
{
u8 *msg;
if (warn) {
msg = towire_warningfmt(desc, channel_id, "%s", desc);
} else {
msg = towire_errorfmt(desc, channel_id, "%s", desc);
}
peer_write(pps, msg);
/* Tell master the error so it can re-xmit. */
msg = towire_status_peer_error(NULL,
disconnect,
desc,
warn,
msg);
peer_billboard(true, desc);
peer_fatal_continue(take(msg), pps);
}
void peer_failed_warn(struct per_peer_state *pps,
const struct channel_id *channel_id,
const char *fmt, ...)
{
va_list ap;
const char *desc;
va_start(ap, fmt);
desc = tal_vfmt(tmpctx, fmt, ap);
va_end(ap);
peer_failed(pps, true, true, channel_id, desc);
}
void peer_failed_warn_nodisconnect(struct per_peer_state *pps,
const struct channel_id *channel_id,
const char *fmt, ...)
{
va_list ap;
const char *desc;
va_start(ap, fmt);
desc = tal_vfmt(tmpctx, fmt, ap);
va_end(ap);
peer_failed(pps, false, true, channel_id, desc);
}
void peer_failed_err(struct per_peer_state *pps,
const struct channel_id *channel_id,
const char *fmt, ...)
{
va_list ap;
const char *desc;
assert(channel_id);
va_start(ap, fmt);
desc = tal_vfmt(tmpctx, fmt, ap);
va_end(ap);
peer_failed(pps, true, false, channel_id, desc);
}
/* We're failing because peer sent us an error/warning message */
void peer_failed_received_errmsg(struct per_peer_state *pps,
bool disconnect,
const char *desc)
{
u8 *msg;
msg = towire_status_peer_error(NULL, disconnect, desc, false, NULL);
peer_billboard(true, "Received %s", desc);
peer_fatal_continue(take(msg), pps);
}
void peer_failed_connection_lost(void)
{
status_send_fatal(take(towire_status_peer_connection_lost(NULL)));
}