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ndb: potential fix for a crash in some nostrdb queries

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This commit is contained in:
William Casarin 2023-11-07 09:49:59 +09:00
parent 289e051202
commit 518fdffce9
1 changed files with 5 additions and 2 deletions
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7
nostrdb/nostrdb.c
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@ -678,7 +678,7 @@ int ndb_get_tsid(struct ndb_txn *txn, enum ndb_dbs db, const unsigned char *id,
{ {
MDB_val k, v; MDB_val k, v;
MDB_cursor *cur; MDB_cursor *cur;
int success = 0; int success = 0, rc;
struct ndb_tsid tsid; struct ndb_tsid tsid;
// position at the most recent // position at the most recent
@ -687,7 +687,10 @@ int ndb_get_tsid(struct ndb_txn *txn, enum ndb_dbs db, const unsigned char *id,
k.mv_data = &tsid; k.mv_data = &tsid;
k.mv_size = sizeof(tsid); k.mv_size = sizeof(tsid);
mdb_cursor_open(txn->mdb_txn, txn->lmdb->dbs[db], &cur); if ((rc = mdb_cursor_open(txn->mdb_txn, txn->lmdb->dbs[db], &cur))) {
ndb_debug("ndb_get_tsid: failed to open cursor: '%s'\n", mdb_errstr(rc));
return 0;
}
// Position cursor at the next key greater than or equal to the specified key // Position cursor at the next key greater than or equal to the specified key
if (mdb_cursor_get(cur, &k, &v, MDB_SET_RANGE)) { if (mdb_cursor_get(cur, &k, &v, MDB_SET_RANGE)) {