json-c retuns OK when Invalid json string is passed

[roopadanganakal]

JSON String = { "run_time":"10:00", "ps2":0, "ps3":0}} //Extra "}" curly brace at the end.

I have a JSON string something like above with two curly braces }} at the end. This is invalid json string. But I don't see any error when json_tokener_parse or json_tokener_parse_ex is called with correct str and stringlen parameters and JSON_TOKENER_STRICT flag is set. Please help!

When I check "jerr" it does not through any error. How to validate the json string using json-c ?

json = json_tokener_parse(str);
if( json == NULL ) { printf ("Invalid JSON StringError"); }
tok = json_tokener_new();
json_tokener_set_flags(tok, JSON_TOKENER_STRICT);
json = json_tokener_parse_ex(tok, str, stringlen);
jerr = json_tokener_get_error(tok);
if (jerr != json_tokener_success ){
printf("Err Json Is Invalid string \n ");
fprintf(stderr, "Error: %s\n", json_tokener_error_desc(jerr));
}

[hawicz]

This is working as intended, it parsed a valid object and stopped. You can check tok->char_offset and handle trailing characters as you desire.
See the docs for more details: http://json-c.github.io/json-c/json-c-0.13/doc/html/json__tokener_8h.html#a61679f178111963a9ffa3c8179553f7a