static ssize_t
ved_decode_len(struct req *req, uint8_t **pp)
{
uint8_t *p;
ssize_t l;
p = *pp;
switch (*p & 15) {
case 1:
l = p[1];
p += 2;
break;
case 2:
l = vbe16dec(p + 1);
p += 3;
break;
case 8:
l = vbe64dec(p + 1);
p += 9;
break;
default:
VSLb(req->vsl, SLT_Error,
"ESI-corruption: Illegal Length %d %d\n", *p, (*p & 15));
WRONG("ESI-codes: illegal length");
}
*pp = p;
assert(l > 0);
return (l);
}
/*
* Find length of a vary entry
*/
static unsigned
VRY_Len(const uint8_t *p)
{
unsigned l = vbe16dec(p);
return (2 + p[2] + 2 + (l == 0xffff ? 0 : l));
}
static void
vep_emit_len(const struct vep_state *vep, ssize_t l, int m8, int m16, int m64)
{
uint8_t buf[9];
assert(l > 0);
if (l < 256) {
buf[0] = (uint8_t)m8;
buf[1] = (uint8_t)l;
assert((ssize_t)buf[1] == l);
VSB_bcat(vep->vsb, buf, 2);
} else if (l < 65536) {
buf[0] = (uint8_t)m16;
vbe16enc(buf + 1, (uint16_t)l);
assert((ssize_t)vbe16dec(buf + 1) == l);
VSB_bcat(vep->vsb, buf, 3);
} else {
buf[0] = (uint8_t)m64;
vbe64enc(buf + 1, l);
assert((ssize_t)vbe64dec(buf + 1) == l);
VSB_bcat(vep->vsb, buf, 9);
}
}
