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common/gossip_store: move subdaemon-only routines to connectd.

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connectd is the only one who uses these routines now.  The
rest can be linked into a plugin.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2023-01-30 16:54:16 +10:30 committed by Alex Myers
parent 7e8b93daa1
commit 153b7bf192
6 changed files with 239 additions and 230 deletions
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208
common/gossip_store.c
View File

@ -10,178 +10,6 @@
#include <unistd.h>
#include <wire/peer_wire.h>
static bool timestamp_filter(u32 timestamp_min, u32 timestamp_max,
u32 timestamp)
{
/* BOLT #7:
*
* - SHOULD send all gossip messages whose `timestamp` is greater or
* equal to `first_timestamp`, and less than `first_timestamp` plus
* `timestamp_range`.
*/
/* Note that we turn first_timestamp & timestamp_range into an inclusive range */
return timestamp >= timestamp_min
&& timestamp <= timestamp_max;
}
static size_t reopen_gossip_store(int *gossip_store_fd, const u8 *msg)
{
u64 equivalent_offset;
int newfd;
if (!fromwire_gossip_store_ended(msg, &equivalent_offset))
status_failed(STATUS_FAIL_GOSSIP_IO,
"Bad gossipd GOSSIP_STORE_ENDED msg: %s",
tal_hex(tmpctx, msg));
newfd = open(GOSSIP_STORE_FILENAME, O_RDONLY);
if (newfd < 0)
status_failed(STATUS_FAIL_INTERNAL_ERROR,
"Cannot open %s: %s",
GOSSIP_STORE_FILENAME,
strerror(errno));
status_debug("gossip_store at end, new fd moved to %"PRIu64,
equivalent_offset);
close(*gossip_store_fd);
*gossip_store_fd = newfd;
return equivalent_offset;
}
static bool public_msg_type(enum peer_wire type)
{
/* This switch statement makes you think about new types as they
* are introduced. */
switch (type) {
case WIRE_INIT:
case WIRE_ERROR:
case WIRE_WARNING:
case WIRE_PING:
case WIRE_PONG:
case WIRE_TX_ADD_INPUT:
case WIRE_TX_ADD_OUTPUT:
case WIRE_TX_REMOVE_INPUT:
case WIRE_TX_REMOVE_OUTPUT:
case WIRE_TX_COMPLETE:
case WIRE_TX_SIGNATURES:
case WIRE_OPEN_CHANNEL:
case WIRE_ACCEPT_CHANNEL:
case WIRE_FUNDING_CREATED:
case WIRE_FUNDING_SIGNED:
case WIRE_CHANNEL_READY:
case WIRE_OPEN_CHANNEL2:
case WIRE_ACCEPT_CHANNEL2:
case WIRE_INIT_RBF:
case WIRE_ACK_RBF:
case WIRE_SHUTDOWN:
case WIRE_CLOSING_SIGNED:
case WIRE_UPDATE_ADD_HTLC:
case WIRE_UPDATE_FULFILL_HTLC:
case WIRE_UPDATE_FAIL_HTLC:
case WIRE_UPDATE_FAIL_MALFORMED_HTLC:
case WIRE_COMMITMENT_SIGNED:
case WIRE_REVOKE_AND_ACK:
case WIRE_UPDATE_FEE:
case WIRE_UPDATE_BLOCKHEIGHT:
case WIRE_CHANNEL_REESTABLISH:
case WIRE_ANNOUNCEMENT_SIGNATURES:
case WIRE_QUERY_SHORT_CHANNEL_IDS:
case WIRE_REPLY_SHORT_CHANNEL_IDS_END:
case WIRE_QUERY_CHANNEL_RANGE:
case WIRE_REPLY_CHANNEL_RANGE:
case WIRE_GOSSIP_TIMESTAMP_FILTER:
case WIRE_ONION_MESSAGE:
#if EXPERIMENTAL_FEATURES
case WIRE_STFU:
#endif
return false;
case WIRE_CHANNEL_ANNOUNCEMENT:
case WIRE_NODE_ANNOUNCEMENT:
case WIRE_CHANNEL_UPDATE:
return true;
}
/* Actually, we do have other (internal) messages. */
return false;
}
u8 *gossip_store_next(const tal_t *ctx,
int *gossip_store_fd,
u32 timestamp_min, u32 timestamp_max,
bool push_only,
bool with_spam,
size_t *off, size_t *end)
{
u8 *msg = NULL;
size_t initial_off = *off;
while (!msg) {
struct gossip_hdr hdr;
u16 msglen, flags;
u32 checksum, timestamp;
bool push, ratelimited;
int type, r;
r = pread(*gossip_store_fd, &hdr, sizeof(hdr), *off);
if (r != sizeof(hdr))
return NULL;
msglen = be16_to_cpu(hdr.len);
flags = be16_to_cpu(hdr.flags);
push = (flags & GOSSIP_STORE_PUSH_BIT);
ratelimited = (flags & GOSSIP_STORE_RATELIMIT_BIT);
/* Skip any deleted entries. */
if (flags & GOSSIP_STORE_DELETED_BIT) {
*off += r + msglen;
continue;
}
/* Skip any timestamp filtered */
timestamp = be32_to_cpu(hdr.timestamp);
if (!push &&
!timestamp_filter(timestamp_min, timestamp_max,
timestamp)) {
*off += r + msglen;
continue;
}
checksum = be32_to_cpu(hdr.crc);
msg = tal_arr(ctx, u8, msglen);
r = pread(*gossip_store_fd, msg, msglen, *off + r);
if (r != msglen)
return tal_free(msg);
if (checksum != crc32c(be32_to_cpu(hdr.timestamp), msg, msglen))
status_failed(STATUS_FAIL_INTERNAL_ERROR,
"gossip_store: bad checksum at offset %zu"
"(was at %zu): %s",
*off, initial_off, tal_hex(tmpctx, msg));
/* Definitely processing it now */
*off += sizeof(hdr) + msglen;
if (*off > *end)
*end = *off;
type = fromwire_peektype(msg);
/* end can go backwards in this case! */
if (type == WIRE_GOSSIP_STORE_ENDED) {
*off = *end = reopen_gossip_store(gossip_store_fd, msg);
msg = tal_free(msg);
/* Ignore gossipd internal messages. */
} else if (!public_msg_type(type)) {
msg = tal_free(msg);
} else if (!push && push_only) {
msg = tal_free(msg);
} else if (!with_spam && ratelimited) {
msg = tal_free(msg);
}
}
return msg;
}
/* We cheat and read first two bytes of message too. */
struct hdr_and_type {
struct gossip_hdr hdr;
@ -227,39 +55,3 @@ size_t find_gossip_store_end(int gossip_store_fd, size_t off)
}
return off;
}
/* Keep seeking forward until we hit something >= timestamp */
size_t find_gossip_store_by_timestamp(int gossip_store_fd,
size_t off,
u32 timestamp)
{
/* We cheat and read first two bytes of message too. */
struct {
struct gossip_hdr hdr;
be16 type;
} buf;
int r;
while ((r = pread(gossip_store_fd, &buf,
sizeof(buf.hdr) + sizeof(buf.type), off))
== sizeof(buf.hdr) + sizeof(buf.type)) {
u16 msglen = be16_to_cpu(buf.hdr.len);
u16 flags = be16_to_cpu(buf.hdr.flags);
u16 type = be16_to_cpu(buf.type);
/* Don't swallow end marker! Reset, as they will call
* gossip_store_next and reopen file. */
if (type == WIRE_GOSSIP_STORE_ENDED)
return 1;
/* Only to-be-broadcast types have valid timestamps! */
if (!(flags & GOSSIP_STORE_DELETED_BIT)
&& public_msg_type(type)
&& be32_to_cpu(buf.hdr.timestamp) >= timestamp) {
break;
}
off += sizeof(buf.hdr) + msglen;
}
return off;
}

21
common/gossip_store.h
View File

@ -55,20 +55,6 @@ struct gossip_hdr {
beint32_t timestamp; /* timestamp of msg. */
};
/**
* Direct store accessor: loads gossip msg from store.
*
* Returns NULL if there are no more gossip msgs.
* Updates *end if the known end of file has moved.
* Updates *gossip_store_fd if file has been compacted.
*/
u8 *gossip_store_next(const tal_t *ctx,
int *gossip_store_fd,
u32 timestamp_min, u32 timestamp_max,
bool push_only,
bool with_spam,
size_t *off, size_t *end);
/**
* Direct store accessor: read gossip msg hdr from store.
* @gossip_store_fd: the readable file descriptor
@ -96,11 +82,4 @@ bool gossip_store_readhdr(int gossip_store_fd, size_t off,
* @old_end: 1 if no previous end.
*/
size_t find_gossip_store_end(int gossip_store_fd, size_t old_end);
/**
* Return offset of first entry >= this timestamp.
*/
size_t find_gossip_store_by_timestamp(int gossip_store_fd,
size_t off,
u32 timestamp);
#endif /* LIGHTNING_COMMON_GOSSIP_STORE_H */

1
connectd/Makefile
View File

@ -5,6 +5,7 @@ CONNECTD_HEADERS := connectd/connectd_wiregen.h \
connectd/connectd.h \
connectd/peer_exchange_initmsg.h \
connectd/handshake.h \
connectd/gossip_store.h \
connectd/gossip_rcvd_filter.h \
connectd/multiplex.h \
connectd/netaddress.h \

210
connectd/gossip_store.c Normal file
View File

@ -0,0 +1,210 @@
#include "config.h"
#include <ccan/crc32c/crc32c.h>
#include <common/status.h>
#include <connectd/gossip_store.h>
#include <errno.h>
#include <fcntl.h>
#include <gossipd/gossip_store_wiregen.h>
#include <inttypes.h>
#include <unistd.h>
#include <wire/peer_wire.h>
static bool timestamp_filter(u32 timestamp_min, u32 timestamp_max,
u32 timestamp)
{
/* BOLT #7:
*
* - SHOULD send all gossip messages whose `timestamp` is greater or
* equal to `first_timestamp`, and less than `first_timestamp` plus
* `timestamp_range`.
*/
/* Note that we turn first_timestamp & timestamp_range into an inclusive range */
return timestamp >= timestamp_min
&& timestamp <= timestamp_max;
}
static size_t reopen_gossip_store(int *gossip_store_fd, const u8 *msg)
{
u64 equivalent_offset;
int newfd;
if (!fromwire_gossip_store_ended(msg, &equivalent_offset))
status_failed(STATUS_FAIL_GOSSIP_IO,
"Bad gossipd GOSSIP_STORE_ENDED msg: %s",
tal_hex(tmpctx, msg));
newfd = open(GOSSIP_STORE_FILENAME, O_RDONLY);
if (newfd < 0)
status_failed(STATUS_FAIL_INTERNAL_ERROR,
"Cannot open %s: %s",
GOSSIP_STORE_FILENAME,
strerror(errno));
status_debug("gossip_store at end, new fd moved to %"PRIu64,
equivalent_offset);
close(*gossip_store_fd);
*gossip_store_fd = newfd;
return equivalent_offset;
}
static bool public_msg_type(enum peer_wire type)
{
/* This switch statement makes you think about new types as they
* are introduced. */
switch (type) {
case WIRE_INIT:
case WIRE_ERROR:
case WIRE_WARNING:
case WIRE_PING:
case WIRE_PONG:
case WIRE_TX_ADD_INPUT:
case WIRE_TX_ADD_OUTPUT:
case WIRE_TX_REMOVE_INPUT:
case WIRE_TX_REMOVE_OUTPUT:
case WIRE_TX_COMPLETE:
case WIRE_TX_SIGNATURES:
case WIRE_OPEN_CHANNEL:
case WIRE_ACCEPT_CHANNEL:
case WIRE_FUNDING_CREATED:
case WIRE_FUNDING_SIGNED:
case WIRE_CHANNEL_READY:
case WIRE_OPEN_CHANNEL2:
case WIRE_ACCEPT_CHANNEL2:
case WIRE_INIT_RBF:
case WIRE_ACK_RBF:
case WIRE_SHUTDOWN:
case WIRE_CLOSING_SIGNED:
case WIRE_UPDATE_ADD_HTLC:
case WIRE_UPDATE_FULFILL_HTLC:
case WIRE_UPDATE_FAIL_HTLC:
case WIRE_UPDATE_FAIL_MALFORMED_HTLC:
case WIRE_COMMITMENT_SIGNED:
case WIRE_REVOKE_AND_ACK:
case WIRE_UPDATE_FEE:
case WIRE_UPDATE_BLOCKHEIGHT:
case WIRE_CHANNEL_REESTABLISH:
case WIRE_ANNOUNCEMENT_SIGNATURES:
case WIRE_QUERY_SHORT_CHANNEL_IDS:
case WIRE_REPLY_SHORT_CHANNEL_IDS_END:
case WIRE_QUERY_CHANNEL_RANGE:
case WIRE_REPLY_CHANNEL_RANGE:
case WIRE_GOSSIP_TIMESTAMP_FILTER:
case WIRE_ONION_MESSAGE:
#if EXPERIMENTAL_FEATURES
case WIRE_STFU:
#endif
return false;
case WIRE_CHANNEL_ANNOUNCEMENT:
case WIRE_NODE_ANNOUNCEMENT:
case WIRE_CHANNEL_UPDATE:
return true;
}
/* Actually, we do have other (internal) messages. */
return false;
}
u8 *gossip_store_next(const tal_t *ctx,
int *gossip_store_fd,
u32 timestamp_min, u32 timestamp_max,
bool push_only,
bool with_spam,
size_t *off, size_t *end)
{
u8 *msg = NULL;
size_t initial_off = *off;
while (!msg) {
struct gossip_hdr hdr;
u16 msglen, flags;
u32 checksum, timestamp;
bool push, ratelimited;
int type, r;
r = pread(*gossip_store_fd, &hdr, sizeof(hdr), *off);
if (r != sizeof(hdr))
return NULL;
msglen = be16_to_cpu(hdr.len);
flags = be16_to_cpu(hdr.flags);
push = (flags & GOSSIP_STORE_PUSH_BIT);
ratelimited = (flags & GOSSIP_STORE_RATELIMIT_BIT);
/* Skip any deleted entries. */
if (flags & GOSSIP_STORE_DELETED_BIT) {
*off += r + msglen;
continue;
}
/* Skip any timestamp filtered */
timestamp = be32_to_cpu(hdr.timestamp);
if (!push &&
!timestamp_filter(timestamp_min, timestamp_max,
timestamp)) {
*off += r + msglen;
continue;
}
checksum = be32_to_cpu(hdr.crc);
msg = tal_arr(ctx, u8, msglen);
r = pread(*gossip_store_fd, msg, msglen, *off + r);
if (r != msglen)
return tal_free(msg);
if (checksum != crc32c(be32_to_cpu(hdr.timestamp), msg, msglen))
status_failed(STATUS_FAIL_INTERNAL_ERROR,
"gossip_store: bad checksum at offset %zu"
"(was at %zu): %s",
*off, initial_off, tal_hex(tmpctx, msg));
/* Definitely processing it now */
*off += sizeof(hdr) + msglen;
if (*off > *end)
*end = *off;
type = fromwire_peektype(msg);
/* end can go backwards in this case! */
if (type == WIRE_GOSSIP_STORE_ENDED) {
*off = *end = reopen_gossip_store(gossip_store_fd, msg);
msg = tal_free(msg);
/* Ignore gossipd internal messages. */
} else if (!public_msg_type(type)) {
msg = tal_free(msg);
} else if (!push && push_only) {
msg = tal_free(msg);
} else if (!with_spam && ratelimited) {
msg = tal_free(msg);
}
}
return msg;
}
/* Keep seeking forward until we hit something >= timestamp */
size_t find_gossip_store_by_timestamp(int gossip_store_fd,
size_t off,
u32 timestamp)
{
u16 type, flags;
u32 ts;
size_t msglen;
while (gossip_store_readhdr(gossip_store_fd, off,
&msglen, &ts, &flags, &type)) {
/* Don't swallow end marker! Reset, as they will call
* gossip_store_next and reopen file. */
if (type == WIRE_GOSSIP_STORE_ENDED)
return 1;
/* Only to-be-broadcast types have valid timestamps! */
if (!(flags & GOSSIP_STORE_DELETED_BIT)
&& public_msg_type(type)
&& ts >= timestamp) {
break;
}
off += sizeof(struct gossip_hdr) + msglen;
}
return off;
}

27
connectd/gossip_store.h Normal file
View File

@ -0,0 +1,27 @@
#ifndef LIGHTNING_CONNECTD_GOSSIP_STORE_H
#define LIGHTNING_CONNECTD_GOSSIP_STORE_H
#include "config.h"
#include <common/gossip_store.h>
/**
* Direct store accessor: loads gossip msg from store.
*
* Returns NULL if there are no more gossip msgs.
* Updates *end if the known end of file has moved.
* Updates *gossip_store_fd if file has been compacted.
*/
u8 *gossip_store_next(const tal_t *ctx,
int *gossip_store_fd,
u32 timestamp_min, u32 timestamp_max,
bool push_only,
bool with_spam,
size_t *off, size_t *end);
/**
* Return offset of first entry >= this timestamp.
*/
size_t find_gossip_store_by_timestamp(int gossip_store_fd,
size_t off,
u32 timestamp);
#endif /* LIGHTNING_CONNECTD_GOSSIP_STORE_H */

2
connectd/multiplex.c
View File

@ -10,7 +10,6 @@
#include <common/dev_disconnect.h>
#include <common/features.h>
#include <common/gossip_constants.h>
#include <common/gossip_store.h>
#include <common/memleak.h>
#include <common/per_peer_state.h>
#include <common/ping.h>
@ -23,6 +22,7 @@
#include <connectd/connectd_gossipd_wiregen.h>
#include <connectd/connectd_wiregen.h>
#include <connectd/gossip_rcvd_filter.h>
#include <connectd/gossip_store.h>
#include <connectd/multiplex.h>
#include <connectd/onion_message.h>
#include <errno.h>