e8fd235d4e
It's used by common/gossip_store.c, which is used by many things other than gossipd. This file belongs in common. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
95 lines
2.4 KiB
C
95 lines
2.4 KiB
C
/* Tool we can use to convert our testing gossip_store files */
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#include "config.h"
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#include <ccan/err/err.h>
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#include <ccan/read_write_all/read_write_all.h>
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#include <common/gossip_store.h>
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#include <common/gossip_store_wiregen.h>
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#include <common/utils.h>
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#include <unistd.h>
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#include <wire/peer_wire.h>
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/* Current versions we support */
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#define GSTORE_MAJOR 0
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#define GSTORE_MINOR 15
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/* Obsolete ZOMBIE bit */
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#define GOSSIP_STORE_ZOMBIE_BIT_V13 0x1000U
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static bool upgrade_field(u8 oldversion,
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be16 *hdr_flags,
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u8 **msg)
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{
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int type = fromwire_peektype(*msg);
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switch (oldversion) {
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case 10:
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/* Remove old channel_update with no htlc_maximum_msat */
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if (type == WIRE_CHANNEL_UPDATE
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&& tal_bytelen(*msg) == 130) {
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*msg = tal_free(*msg);
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return true;
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}
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/* fall thru */
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case 11:
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case 12:
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/* Remove private entries */
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if (type == WIRE_GOSSIP_STORE_PRIVATE_CHANNEL_OBS) {
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*msg = tal_free(*msg);
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return true;
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} else if (type == WIRE_GOSSIP_STORE_PRIVATE_UPDATE_OBS) {
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*msg = tal_free(*msg);
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return true;
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}
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/* fall thru */
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case 13:
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/* Discard any zombies */
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if (be16_to_cpu(*hdr_flags) & GOSSIP_STORE_ZOMBIE_BIT_V13) {
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*msg = tal_free(*msg);
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return true;
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}
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case 14:
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/* Add completed field */
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*hdr_flags |= CPU_TO_BE16(GOSSIP_STORE_COMPLETED_BIT);
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/* fall thru */
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case 15:
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/* Noop */
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return true;
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}
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return false;
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}
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int main(int argc, char *argv[])
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{
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u8 oldversion, version;
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struct gossip_hdr hdr;
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setup_locale();
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if (!read_all(STDIN_FILENO, &oldversion, sizeof(oldversion)))
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errx(1, "Empty file");
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if (GOSSIP_STORE_MAJOR_VERSION(oldversion) != GSTORE_MAJOR)
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errx(1, "Unsupported major gossip_version %u (expected %u)",
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GOSSIP_STORE_MAJOR_VERSION(oldversion), GSTORE_MAJOR);
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version = ((GSTORE_MAJOR << 5) | GSTORE_MINOR);
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if (!write_all(STDOUT_FILENO, &version, sizeof(version)))
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err(1, "Write error");
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while (read_all(STDIN_FILENO, &hdr, sizeof(hdr))) {
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u8 *msg;
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msg = tal_arr(NULL, u8, be16_to_cpu(hdr.len));
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if (!read_all(STDIN_FILENO, msg, tal_bytelen(msg)))
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err(1, "truncated file");
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if (!upgrade_field(oldversion, &hdr.flags, &msg))
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errx(1, "Cannot upgrade from version %u", oldversion);
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if (msg) {
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if (!write_all(STDOUT_FILENO, &hdr, sizeof(hdr))
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|| !write_all(STDOUT_FILENO, msg, tal_bytelen(msg)))
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err(1, "Write error");
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tal_free(msg);
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}
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}
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return 0;
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}
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