static void
cnt_vdp(struct req *req, struct busyobj *bo)
{
const char *r;
uint16_t status;
int wantbody;
CHECK_OBJ_NOTNULL(req->transport, TRANSPORT_MAGIC);
req->res_mode = 0;
wantbody = 1;
status = http_GetStatus(req->resp);
if (!strcmp(req->http0->hd[HTTP_HDR_METHOD].b, "HEAD")) {
wantbody = 0;
} else if (status < 200 || status == 204) {
req->resp_len = 0;
http_Unset(req->resp, H_Content_Length);
wantbody = 0;
} else if (status == 304) {
http_Unset(req->resp, H_Content_Length);
wantbody = 0;
} else if (bo != NULL)
req->resp_len = http_GetContentLength(req->resp);
else
req->resp_len = ObjGetLen(req->wrk, req->objcore);
/*
* Determine ESI status first. Not dependent on wantbody, because
* we want ESI to supress C-L in HEAD too.
*/
if (!req->disable_esi && req->resp_len != 0 && wantbody &&
ObjGetattr(req->wrk, req->objcore, OA_ESIDATA, NULL) != NULL) {
req->res_mode |= RES_ESI;
RFC2616_Weaken_Etag(req->resp);
req->resp_len = -1;
VDP_push(req, VDP_ESI, NULL, 0);
}
if (cache_param->http_gzip_support &&
ObjCheckFlag(req->wrk, req->objcore, OF_GZIPED) &&
!RFC2616_Req_Gzip(req->http)) {
req->res_mode |= RES_GUNZIP;
VDP_push(req, VDP_gunzip, NULL, 1);
}
/*
* Range comes after the others and pushes on bottom because
* it can (maybe) generate a correct C-L header.
*/
if (cache_param->http_range_support && http_IsStatus(req->resp, 200)) {
http_SetHeader(req->resp, "Accept-Ranges: bytes");
if (wantbody && http_GetHdr(req->http, H_Range, &r))
VRG_dorange(req, r);
}
req->transport->deliver(req, bo, wantbody);
}
static enum body_status
http1_body_status(struct http *hp, struct http_conn *htc)
{
ssize_t cl;
const char *b;
CHECK_OBJ_NOTNULL(htc, HTTP_CONN_MAGIC);
CHECK_OBJ_NOTNULL(hp, HTTP_MAGIC);
htc->content_length = -1;
if (http_HdrIs(hp, H_Transfer_Encoding, "chunked")) {
http_Unset(hp, H_Content_Length);
return (BS_CHUNKED);
}
if (http_GetHdr(hp, H_Transfer_Encoding, &b))
return (BS_ERROR);
cl = http_GetContentLength(hp);
if (cl == -2)
return (BS_ERROR);
if (cl >= 0) {
htc->content_length = cl;
return (cl == 0 ? BS_NONE : BS_LENGTH);
}
if (http_HdrIs(hp, H_Connection, "keep-alive")) {
/*
* Keep alive with neither TE=Chunked or C-Len is impossible.
* We assume a zero length body.
*/
return (BS_NONE);
}
if (http_HdrIs(hp, H_Connection, "close")) {
/*
* In this case, it is safe to just read what comes.
*/
return (BS_EOF);
}
if (hp->protover < 11) {
/*
* With no Connection header, assume EOF.
*/
return (BS_EOF);
}
/*
* Fall back to EOF transfer.
*/
return (BS_EOF);
}
static enum body_status
http1_body_status(const struct http *hp, struct http_conn *htc, int request)
{
ssize_t cl;
const char *b;
CHECK_OBJ_NOTNULL(htc, HTTP_CONN_MAGIC);
CHECK_OBJ_NOTNULL(hp, HTTP_MAGIC);
htc->content_length = -1;
cl = http_GetContentLength(hp);
if (cl == -2)
return (BS_ERROR);
if (http_GetHdr(hp, H_Transfer_Encoding, &b)) {
if (strcasecmp(b, "chunked"))
return (BS_ERROR);
if (cl != -1) {
/*
* RFC7230 3.3.3 allows more lenient handling
* but we're going to be strict.
*/
return (BS_ERROR);
}
return (BS_CHUNKED);
}
if (cl >= 0) {
htc->content_length = cl;
return (cl == 0 ? BS_NONE : BS_LENGTH);
}
if (hp->protover == 11 && (request || !http_HdrIs(hp, H_Connection, "close")))
return (BS_NONE);
if (http_HdrIs(hp, H_Connection, "keep-alive")) {
/*
* Keep alive with neither TE=Chunked or C-Len is impossible.
* We assume a zero length body.
*/
return (BS_NONE);
}
/*
* Fall back to EOF transfer.
*/
return (BS_EOF);
}
static enum req_fsm_nxt
cnt_transmit(struct worker *wrk, struct req *req)
{
struct boc *boc;
const char *r;
uint16_t status;
int sendbody;
intmax_t clval;
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
CHECK_OBJ_NOTNULL(req->transport, TRANSPORT_MAGIC);
/* Grab a ref to the bo if there is one */
boc = HSH_RefBoc(req->objcore);
clval = http_GetContentLength(req->resp);
if (boc != NULL)
req->resp_len = clval;
else
req->resp_len = ObjGetLen(req->wrk, req->objcore);
req->res_mode = 0;
/* RFC 7230, 3.3.3 */
status = http_GetStatus(req->resp);
if (!strcmp(req->http0->hd[HTTP_HDR_METHOD].b, "HEAD")) {
if (req->objcore->flags & OC_F_PASS)
sendbody = -1;
else
sendbody = 0;
} else if (status < 200 || status == 204 || status == 304) {
req->resp_len = -1;
sendbody = 0;
} else
sendbody = 1;
if (sendbody >= 0) {
if (!req->disable_esi && req->resp_len != 0 &&
ObjHasAttr(wrk, req->objcore, OA_ESIDATA))
VDP_push(req, VDP_ESI, NULL, 0, "ESI");
if (cache_param->http_gzip_support &&
ObjCheckFlag(req->wrk, req->objcore, OF_GZIPED) &&
!RFC2616_Req_Gzip(req->http))
VDP_push(req, VDP_gunzip, NULL, 1, "GUZ");
if (cache_param->http_range_support &&
http_IsStatus(req->resp, 200)) {
http_SetHeader(req->resp, "Accept-Ranges: bytes");
if (sendbody && http_GetHdr(req->http, H_Range, &r))
VRG_dorange(req, r);
}
}
if (sendbody < 0) {
/* Don't touch pass+HEAD C-L */
sendbody = 0;
} else if (clval >= 0 && clval == req->resp_len) {
/* Reuse C-L header */
} else {
http_Unset(req->resp, H_Content_Length);
if (req->resp_len >= 0 && sendbody)
http_PrintfHeader(req->resp,
"Content-Length: %jd", req->resp_len);
}
req->transport->deliver(req, boc, sendbody);
VSLb_ts_req(req, "Resp", W_TIM_real(wrk));
if (req->objcore->flags & (OC_F_PRIVATE | OC_F_PASS)) {
if (boc != NULL) {
HSH_Abandon(req->objcore);
ObjWaitState(req->objcore, BOS_FINISHED);
}
ObjSlim(wrk, req->objcore);
}
if (boc != NULL)
HSH_DerefBoc(wrk, req->objcore);
(void)HSH_DerefObjCore(wrk, &req->objcore);
http_Teardown(req->resp);
return (REQ_FSM_DONE);
}
