get_uint16
sig = get_uint16(s);
get_uint16(s); /* min version */
s->z_flags = get_uint16(s); /* general purpose flags */
s->z_method = get_uint16(s); /* compression method */
namelen = get_uint16(s); /* file name length */
extlen = get_uint16(s); /* length of extra fields */
sig = get_uint16(s);
fieldlen = get_uint16(s);