int Ns_ConfigGetBool( char *hSection, char *sKey, int *pbValue );
The Ns_ConfigGetBool function returns the boolean value of the specified key (sKey) in the specified configuration file section (hSection) and puts it into the integer pointed to by pbValue as a 1 or 0. Values of "1", "y", "yes", "on", "t", and "true" are 1, and values of "0", "n", "no", "f", and "false" are 0. If any other value is found, a warning is written to the log and NS_FALSE is returned. Ns_ConfigGetBool returns NS_TRUE if a valid sKey exists and NS_FALSE otherwise.
int opt; if (Ns_ConfigGetBool("MySect", "MyKey", &opt) != NS_TRUE) { /* Option was not present or invalid - set a default. */ opt = 0; /* off */ }