get_field
char *get_field(char **, size_t *, int *);
field = get_field(line, len, &fieldlen);
ptr = get_field(line, len, &fieldlen);
char *get_field(u_char **, size_t *, int *);
field = get_field(line, len, &fieldlen);
ptr = get_field(line, len, &fieldlen);