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devtools: dump-gossipstore.
Not very useful by itself, but when combined with decodemsg it can tell us quite a bit. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
parent
6091e5158b
commit
317a830e94
1
devtools/.gitignore
vendored
1
devtools/.gitignore
vendored
@ -1,3 +1,4 @@
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bolt11-cli
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decodemsg
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onion
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dump-gossipstore
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@ -1,6 +1,6 @@
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DEVTOOLS_SRC := devtools/gen_print_wire.c devtools/gen_print_onion_wire.c devtools/print_wire.c
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DEVTOOLS_OBJS := $(DEVTOOLS_SRC:.c=.o)
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DEVTOOLS_TOOL_SRC := devtools/bolt11-cli.c devtools/decodemsg.c devtools/onion.c
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DEVTOOLS_TOOL_SRC := devtools/bolt11-cli.c devtools/decodemsg.c devtools/onion.c devtools/dump-gossipstore.c
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DEVTOOLS_TOOL_OBJS := $(DEVTOOLS_TOOL_SRC:.c=.o)
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DEVTOOLS_COMMON_OBJS := \
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@ -15,7 +15,7 @@ DEVTOOLS_COMMON_OBJS := \
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common/version.o \
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common/wireaddr.o
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devtools-all: devtools/bolt11-cli devtools/decodemsg devtools/onion
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devtools-all: devtools/bolt11-cli devtools/decodemsg devtools/onion devtools/dump-gossipstore
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devtools/gen_print_wire.h: $(WIRE_GEN) wire/gen_peer_wire_csv
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$(WIRE_GEN) --bolt --printwire --header $@ wire_type < wire/gen_peer_wire_csv > $@
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@ -33,6 +33,9 @@ devtools/bolt11-cli: $(DEVTOOLS_OBJS) $(DEVTOOLS_COMMON_OBJS) $(JSMN_OBJS) $(CCA
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devtools/decodemsg: $(DEVTOOLS_OBJS) $(DEVTOOLS_COMMON_OBJS) $(JSMN_OBJS) $(CCAN_OBJS) $(BITCOIN_OBJS) wire/fromwire.o wire/towire.o devtools/decodemsg.o
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devtools/dump-gossipstore: $(DEVTOOLS_OBJS) $(DEVTOOLS_COMMON_OBJS) $(JSMN_OBJS) $(CCAN_OBJS) $(BITCOIN_OBJS) wire/fromwire.o wire/towire.o devtools/dump-gossipstore.o gossipd/gen_gossip_store.o
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devtools/dump-gossipstore.o: gossipd/gen_gossip_store.h
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devtools/onion.c: ccan/config.h
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devtools/onion: $(DEVTOOLS_OBJS) $(DEVTOOLS_COMMON_OBJS) $(JSMN_OBJS) $(CCAN_OBJS) $(BITCOIN_OBJS) wire/fromwire.o wire/towire.o devtools/onion.o common/sphinx.o
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@ -42,7 +45,7 @@ devtools/gen_print_wire.o: devtools/gen_print_wire.h wire/gen_peer_wire.h devtoo
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devtools/gen_print_onion_wire.o: devtools/gen_print_onion_wire.h devtools/print_wire.h
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# Make sure these depend on everything.
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ALL_PROGRAMS += devtools/bolt11-cli devtools/decodemsg devtools/onion
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ALL_PROGRAMS += devtools/bolt11-cli devtools/decodemsg devtools/onion devtools/dump-gossipstore
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ALL_OBJS += $(DEVTOOLS_OBJS) $(DEVTOOLS_TOOL_OBJS)
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check-source: $(DEVTOOLS_SRC:%=check-src-include-order/%) $(DEVTOOLS_TOOLS_SRC:%=check-src-include-order/%)
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82
devtools/dump-gossipstore.c
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82
devtools/dump-gossipstore.c
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@ -0,0 +1,82 @@
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#include <ccan/crc/crc.h>
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#include <ccan/err/err.h>
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#include <common/type_to_string.h>
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#include <common/utils.h>
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#include <fcntl.h>
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#include <gossipd/gen_gossip_store.h>
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#include <gossipd/gossip_store.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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int main(int argc, char *argv[])
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{
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int fd;
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u8 version;
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beint32_t belen, becsum;
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setup_locale();
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if (argc > 2)
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errx(1, "Need the filename of a gossip store, or stdin");
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if (argc == 2) {
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fd = open(argv[1], O_RDONLY);
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if (fd < 0)
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err(1, "Opening %s", argv[1]);
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} else
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fd = STDIN_FILENO;
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if (read(fd, &version, sizeof(version)) != sizeof(version))
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errx(1, "Empty file");
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if (version != GOSSIP_STORE_VERSION)
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warnx("UNSUPPORTED GOSSIP VERSION %u (expected %u)",
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version, GOSSIP_STORE_VERSION);
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printf("GOSSIP VERSION %u\n", version);
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while (read(fd, &belen, sizeof(belen)) == sizeof(belen) &&
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read(fd, &becsum, sizeof(becsum)) == sizeof(becsum)) {
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u64 satoshis;
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struct short_channel_id scid;
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u8 *gossip_msg;
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u32 msglen = be32_to_cpu(belen);
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u8 *msg = tal_arr(NULL, u8, msglen);
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if (read(fd, msg, msglen) != msglen)
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errx(1, "Truncated file?");
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if (be32_to_cpu(becsum) != crc32c(0, msg, msglen))
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warnx("Checksum verification failed");
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if (fromwire_gossip_store_channel_announcement(msg, msg,
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&gossip_msg,
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&satoshis)) {
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printf("channel_announce for %"PRIu64" satoshis: %s\n",
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satoshis, tal_hex(msg, gossip_msg));
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} else if (fromwire_gossip_store_channel_update(msg, msg,
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&gossip_msg)) {
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printf("channel_update: %s\n",
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tal_hex(msg, gossip_msg));
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} else if (fromwire_gossip_store_node_announcement(msg, msg,
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&gossip_msg)) {
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printf("node_announcement: %s\n",
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tal_hex(msg, gossip_msg));
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} else if (fromwire_gossip_store_channel_delete(msg, &scid)) {
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printf("channel_delete: %s\n",
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type_to_string(msg, struct short_channel_id,
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&scid));
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} else if (fromwire_gossip_store_local_add_channel(
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msg, msg, &gossip_msg)) {
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printf("local_add_channel: %s\n",
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tal_hex(msg, gossip_msg));
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} else {
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warnx("Unknown message %u", fromwire_peektype(msg));
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}
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tal_free(msg);
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}
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return 0;
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}
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@ -16,7 +16,6 @@
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#define GOSSIP_STORE_FILENAME "gossip_store"
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#define GOSSIP_STORE_TEMP_FILENAME "gossip_store.tmp"
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static u8 gossip_store_version = 0x02;
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struct gossip_store {
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int fd;
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@ -62,17 +61,17 @@ struct gossip_store *gossip_store_new(const tal_t *ctx,
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if (read(gs->fd, &gs->version, sizeof(gs->version))
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== sizeof(gs->version)) {
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/* Version match? All good */
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if (gs->version == gossip_store_version)
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if (gs->version == GOSSIP_STORE_VERSION)
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return gs;
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status_unusual("Gossip store version %u not %u: removing",
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gs->version, gossip_store_version);
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gs->version, GOSSIP_STORE_VERSION);
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if (ftruncate(gs->fd, 0) != 0)
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status_failed(STATUS_FAIL_INTERNAL_ERROR,
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"Truncating store: %s", strerror(errno));
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}
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/* Empty file, write version byte */
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gs->version = gossip_store_version;
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gs->version = GOSSIP_STORE_VERSION;
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if (write(gs->fd, &gs->version, sizeof(gs->version))
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!= sizeof(gs->version))
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status_failed(STATUS_FAIL_INTERNAL_ERROR,
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@ -177,8 +176,8 @@ static void gossip_store_compact(struct gossip_store *gs)
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goto disable;
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}
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if (write(fd, &gossip_store_version, sizeof(gossip_store_version))
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!= sizeof(gossip_store_version)) {
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if (write(fd, &gs->version, sizeof(gs->version))
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!= sizeof(gs->version)) {
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status_broken("Writing version to store: %s", strerror(errno));
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goto unlink_disable;
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}
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@ -11,6 +11,8 @@
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/**
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* gossip_store -- On-disk storage related information
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*/
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#define GOSSIP_STORE_VERSION 2
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struct gossip_store;
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struct routing_state;
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