Audit Log Creates Invalid JSON

[Matthew B]

The audit_log plugin does not produce valid JSON strings when <tab> is contained in the query. Please add the following patch to filter/escape tab in JSON output.

diff --git a/audit_log.c b/audit_log.c
index 39078fa..4c3224d 100644
--- a/audit_log.c
+++ b/audit_log.c
@@ -224,6 +224,7 @@ void json_escape(const char *in, size_t *inlen, char *out, size_t *outlen)
     { '"', 2, "\\\"" },
     { '\r', 2, "\\r" },
     { '\n', 2, "\\n" },
+ { '\t', 2, "\\t" },
     { 0, 0, NULL }
   };