sqlite: reject statement-less SQL in SQLTagStore - #65157
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sqlite3_prepare_v2() returns SQLITE_OK without producing a statement when its input holds no SQL, such as a comment. PrepareStatement() only checked the return code, so it cached a StatementSync wrapping a null sqlite3_stmt. Executing it reached sqlite3_clear_bindings(), which only guards against a null statement under SQLITE_ENABLE_API_ARMOR, and segfaulted. Reject such input instead of caching it. The StatementSync methods already avoid the crash because their IsFinalized() guard treats a null statement as finalized. Fixes: nodejs#65149 Signed-off-by: Trevor Burnham <trevorburnham@gmail.com>
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| // sqlite3_prepare_v2() reports success without producing a statement when | ||
| // the input holds no SQL, such as a comment. Such a statement cannot be | ||
| // bound or executed, so reject it instead of caching it. | ||
| if (s == nullptr) { | ||
| THROW_ERR_INVALID_ARG_VALUE(env, "The SQL query contains no statement."); | ||
| return BaseObjectPtr<StatementSync>(); | ||
| } |
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I think this is the right approach, but if we do this for the tag store then we should also perform this check for db.prepare() (ie. throw at the point of preparation rather than at the point of attempting to step the null query).
const stmt = db.prepare('-- :-/') // currently succeeds
stmt.get() // currently fails at this point with ERR_INVALID_STATE
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sqlite3_prepare_v2()returnsSQLITE_OKwithout producing a statement when its input holds no SQL, such as a comment.SQLTagStore::PrepareStatement()only checked the return code, so it cached aStatementSyncwrapping a nullsqlite3_stmt. Executing it reachedsqlite3_clear_bindings(), which only guards against a null statement underSQLITE_ENABLE_API_ARMOR, and segfaulted:All four query methods (
run,get,all,iterate) were affected. This now throwsERR_INVALID_ARG_VALUEinstead, and the rejected statement is not cached.The
StatementSyncmethods already avoid the crash because theirIsFinalized()guard treats a null statement as finalized.Fixes: #65149