- /* our bit strings are always a multiple of 8 :-) */
- bits=0;
- ret=1+a->length;
- r=ASN1_object_size(0,ret,V_ASN1_BIT_STRING);
- if (pp == NULL) return(r);
+ len=a->length;
+ ret=1+len;
+ if (pp == NULL) return(ret);
+
+ if (len > 0)
+ {
+ if (a->flags & ASN1_STRING_FLAG_BITS_LEFT)
+ {
+ bits=(int)a->flags&0x07;
+ }
+ else
+ {
+ for ( ; len > 0; len--)
+ {
+ if (a->data[len-1]) break;
+ }
+ j=a->data[len-1];
+ if (j & 0x01) bits=0;
+ else if (j & 0x02) bits=1;
+ else if (j & 0x04) bits=2;
+ else if (j & 0x08) bits=3;
+ else if (j & 0x10) bits=4;
+ else if (j & 0x20) bits=5;
+ else if (j & 0x40) bits=6;
+ else if (j & 0x80) bits=7;
+ else bits=0; /* should not happen */
+ }
+ }
+ else
+ bits=0;