static struct object *
vbf_allocobj(struct busyobj *bo, unsigned l, uint16_t nhttp)
{
struct object *obj;
struct objcore *oc;
const char *storage_hint;
double lifetime;
CHECK_OBJ_NOTNULL(bo, BUSYOBJ_MAGIC);
oc = bo->fetch_objcore;
CHECK_OBJ_NOTNULL(oc, OBJCORE_MAGIC);
lifetime = oc->exp.ttl + oc->exp.grace + oc->exp.keep;
if (bo->uncacheable || lifetime < cache_param->shortlived)
storage_hint = TRANSIENT_STORAGE;
else
storage_hint = bo->storage_hint;
bo->storage_hint = NULL;
obj = STV_NewObject(bo, storage_hint, l, nhttp);
if (obj != NULL)
return (obj);
if (storage_hint != NULL && !strcmp(storage_hint, TRANSIENT_STORAGE))
return (NULL);
/*
* Try to salvage the transaction by allocating a shortlived object
* on Transient storage.
*/
if (oc->exp.ttl > cache_param->shortlived)
oc->exp.ttl = cache_param->shortlived;
oc->exp.grace = 0.0;
oc->exp.keep = 0.0;
obj = STV_NewObject(bo, TRANSIENT_STORAGE, l, nhttp);
return (obj);
}
static int
vbf_allocobj(struct busyobj *bo, unsigned l)
{
struct objcore *oc;
const struct stevedore *stv;
double lifetime;
CHECK_OBJ_NOTNULL(bo, BUSYOBJ_MAGIC);
oc = bo->fetch_objcore;
CHECK_OBJ_NOTNULL(oc, OBJCORE_MAGIC);
lifetime = oc->ttl + oc->grace + oc->keep;
if (bo->uncacheable || lifetime < cache_param->shortlived)
stv = stv_transient;
else
stv = bo->storage;
bo->storage = NULL;
if (stv == NULL)
return (0);
if (STV_NewObject(bo->wrk, bo->fetch_objcore, stv, l))
return (1);
if (stv == stv_transient)
return (0);
/*
* Try to salvage the transaction by allocating a shortlived object
* on Transient storage.
*/
if (oc->ttl > cache_param->shortlived)
oc->ttl = cache_param->shortlived;
oc->grace = 0.0;
oc->keep = 0.0;
return (STV_NewObject(bo->wrk, bo->fetch_objcore, stv_transient, l));
}
static enum fetch_step
vbf_stp_fetch(struct worker *wrk, struct busyobj *bo)
{
struct http *hp, *hp2;
char *b;
uint16_t nhttp;
unsigned l;
struct vsb *vary = NULL;
int varyl = 0;
struct object *obj;
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
CHECK_OBJ_NOTNULL(bo, BUSYOBJ_MAGIC);
assert(wrk->handling == VCL_RET_DELIVER);
/*
* The VCL variables beresp.do_g[un]zip tells us how we want the
* object processed before it is stored.
*
* The backend Content-Encoding header tells us what we are going
* to receive, which we classify in the following three classes:
*
* "Content-Encoding: gzip" --> object is gzip'ed.
* no Content-Encoding --> object is not gzip'ed.
* anything else --> do nothing wrt gzip
*
* XXX: BS_NONE/cl==0 should avoid gzip/gunzip
*/
/* We do nothing unless the param is set */
if (!cache_param->http_gzip_support)
bo->do_gzip = bo->do_gunzip = 0;
bo->is_gzip = http_HdrIs(bo->beresp, H_Content_Encoding, "gzip");
bo->is_gunzip = !http_GetHdr(bo->beresp, H_Content_Encoding, NULL);
/* It can't be both */
assert(bo->is_gzip == 0 || bo->is_gunzip == 0);
/* We won't gunzip unless it is gzip'ed */
if (bo->do_gunzip && !bo->is_gzip)
bo->do_gunzip = 0;
/* If we do gunzip, remove the C-E header */
if (bo->do_gunzip)
http_Unset(bo->beresp, H_Content_Encoding);
/* We wont gzip unless it is ungziped */
if (bo->do_gzip && !bo->is_gunzip)
bo->do_gzip = 0;
/* If we do gzip, add the C-E header */
if (bo->do_gzip)
http_SetHeader(bo->beresp, "Content-Encoding: gzip");
/* But we can't do both at the same time */
assert(bo->do_gzip == 0 || bo->do_gunzip == 0);
/* ESI takes precedence and handles gzip/gunzip itself */
if (bo->do_esi)
bo->vfp = &vfp_esi;
else if (bo->do_gunzip)
bo->vfp = &vfp_gunzip;
else if (bo->do_gzip)
bo->vfp = &vfp_gzip;
else if (bo->is_gzip)
bo->vfp = &vfp_testgzip;
if (bo->fetch_objcore->objhead == NULL)
AN(bo->uncacheable);
/* No reason to try streaming a non-existing body */
if (bo->htc.body_status == BS_NONE)
bo->do_stream = 0;
l = http_EstimateWS(bo->beresp,
bo->uncacheable ? HTTPH_R_PASS : HTTPH_A_INS, &nhttp);
/* Create Vary instructions */
if (bo->fetch_objcore->objhead != NULL) {
varyl = VRY_Create(bo, &vary);
if (varyl > 0) {
AN(vary);
assert(varyl == VSB_len(vary));
l += varyl;
} else if (varyl < 0) {
/*
* Vary parse error
* Complain about it, and make this a pass.
*/
VSLb(bo->vsl, SLT_Error,
"Illegal 'Vary' header from backend, "
"making this a pass.");
bo->uncacheable = 1;
AZ(vary);
} else
/* No vary */
AZ(vary);
}
if (bo->uncacheable)
bo->fetch_objcore->flags |= OC_F_PASS;
if (bo->exp.ttl < cache_param->shortlived || bo->uncacheable == 1)
bo->storage_hint = TRANSIENT_STORAGE;
/*
* Space for producing a Content-Length: header including padding
* A billion gigabytes is enough for anybody.
*/
l += strlen("Content-Length: XxxXxxXxxXxxXxxXxx") + sizeof(void *);
AZ(bo->stats);
bo->stats = &wrk->stats;
obj = STV_NewObject(bo, bo->storage_hint, l, nhttp);
if (obj == NULL) {
/*
* Try to salvage the transaction by allocating a
* shortlived object on Transient storage.
*/
if (bo->exp.ttl > cache_param->shortlived)
bo->exp.ttl = cache_param->shortlived;
bo->exp.grace = 0.0;
bo->exp.keep = 0.0;
obj = STV_NewObject(bo, TRANSIENT_STORAGE, l, nhttp);
}
bo->stats = NULL;
if (obj == NULL) {
AZ(HSH_Deref(&wrk->stats, bo->fetch_objcore, NULL));
bo->fetch_objcore = NULL;
VDI_CloseFd(&bo->vbc);
VBO_setstate(bo, BOS_FAILED);
return (F_STP_ABANDON);
}
CHECK_OBJ_NOTNULL(obj, OBJECT_MAGIC);
bo->storage_hint = NULL;
AZ(bo->fetch_obj);
bo->fetch_obj = obj;
if (bo->do_gzip || (bo->is_gzip && !bo->do_gunzip))
obj->gziped = 1;
if (vary != NULL) {
obj->vary = (void *)WS_Copy(obj->http->ws,
VSB_data(vary), varyl);
AN(obj->vary);
VRY_Validate(obj->vary);
VSB_delete(vary);
}
obj->vxid = bo->vsl->wid;
obj->response = bo->err_code;
WS_Assert(obj->ws_o);
/* Filter into object */
hp = bo->beresp;
hp2 = obj->http;
hp2->logtag = HTTP_Obj;
http_FilterResp(hp, hp2, bo->uncacheable ? HTTPH_R_PASS : HTTPH_A_INS);
http_CopyHome(hp2);
if (http_GetHdr(hp, H_Last_Modified, &b))
obj->last_modified = VTIM_parse(b);
else
obj->last_modified = floor(bo->exp.entered);
assert(WRW_IsReleased(wrk));
/*
* Ready to fetch the body
*/
assert(bo->refcount >= 1);
if (obj->objcore->objhead != NULL) {
EXP_Insert(obj);
AN(obj->objcore->ban);
AZ(obj->ws_o->overflow);
HSH_Unbusy(&wrk->stats, obj->objcore);
}
if (bo->vfp == NULL)
bo->vfp = &VFP_nop;
assert(bo->state == BOS_INVALID);
VBO_setstate(bo, BOS_FETCHING);
V1F_fetch_body(wrk, bo);
assert(bo->refcount >= 1);
if (obj->objcore->objhead != NULL)
HSH_Ref(obj->objcore);
if (bo->state == BOS_FAILED) {
/* handle early failures */
(void)HSH_Deref(&wrk->stats, NULL, &obj);
return (F_STP_ABANDON);
}
VBO_setstate(bo, BOS_FINISHED);
VBO_DerefBusyObj(wrk, &bo); // XXX ?
return (F_STP_DONE);
}
static enum req_fsm_nxt
cnt_synth(struct worker *wrk, struct req *req)
{
struct http *h;
double now;
struct vsb *synth_body;
ssize_t sz, szl;
uint8_t *ptr;
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
wrk->stats->s_synth++;
now = W_TIM_real(wrk);
VSLb_ts_req(req, "Process", now);
if (req->err_code < 100 || req->err_code > 999)
req->err_code = 501;
HTTP_Setup(req->resp, req->ws, req->vsl, SLT_RespMethod);
h = req->resp;
http_TimeHeader(h, "Date: ", now);
http_SetHeader(h, "Server: Varnish");
http_PrintfHeader(req->resp, "X-Varnish: %u", VXID(req->vsl->wid));
http_PutResponse(h, "HTTP/1.1", req->err_code, req->err_reason);
synth_body = VSB_new_auto();
AN(synth_body);
VCL_synth_method(req->vcl, wrk, req, NULL, synth_body);
AZ(VSB_finish(synth_body));
http_Unset(h, H_Content_Length);
http_PrintfHeader(req->resp, "Content-Length: %zd",
VSB_len(synth_body));
/* Discard any lingering request body before delivery */
(void)VRB_Ignore(req);
if (wrk->handling == VCL_RET_RESTART) {
HTTP_Setup(h, req->ws, req->vsl, SLT_RespMethod);
VSB_destroy(&synth_body);
req->req_step = R_STP_RESTART;
return (REQ_FSM_MORE);
}
assert(wrk->handling == VCL_RET_DELIVER);
req->objcore = HSH_Private(wrk);
CHECK_OBJ_NOTNULL(req->objcore, OBJCORE_MAGIC);
szl = -1;
if (STV_NewObject(wrk, req->objcore, TRANSIENT_STORAGE, 1024)) {
szl = VSB_len(synth_body);
assert(szl >= 0);
sz = szl;
if (sz > 0 &&
ObjGetSpace(wrk, req->objcore, &sz, &ptr) && sz >= szl) {
memcpy(ptr, VSB_data(synth_body), szl);
ObjExtend(wrk, req->objcore, szl);
} else if (sz > 0) {
szl = -1;
}
}
if (szl >= 0)
AZ(ObjSetU64(wrk, req->objcore, OA_LEN, szl));
HSH_DerefBoc(wrk, req->objcore);
VSB_destroy(&synth_body);
if (szl < 0) {
VSLb(req->vsl, SLT_Error, "Could not get storage");
req->doclose = SC_OVERLOAD;
VSLb_ts_req(req, "Resp", W_TIM_real(wrk));
(void)HSH_DerefObjCore(wrk, &req->objcore);
http_Teardown(req->resp);
return (REQ_FSM_DONE);
}
req->req_step = R_STP_TRANSMIT;
return (REQ_FSM_MORE);
}
static enum fetch_step
vbf_stp_condfetch(struct worker *wrk, struct busyobj *bo)
{
unsigned l;
uint16_t nhttp;
struct object *obj;
struct objiter *oi;
void *sp;
ssize_t sl, al, tl, vl;
struct storage *st;
enum objiter_status ois;
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
CHECK_OBJ_NOTNULL(bo, BUSYOBJ_MAGIC);
l = 0;
if (bo->ims_obj->vary != NULL) {
vl = VRY_Validate(bo->ims_obj->vary);
l += vl;
} else
vl = 0;
l += http_EstimateWS(bo->ims_obj->http, 0, &nhttp);
bo->stats = &wrk->stats;
obj = STV_NewObject(bo, bo->storage_hint, l, nhttp);
if (obj == NULL) {
(void)VFP_Error(bo, "Could not get storage");
VDI_CloseFd(&bo->vbc);
return (F_STP_DONE);
}
AZ(bo->fetch_obj);
bo->fetch_obj = obj;
obj->gziped = bo->ims_obj->gziped;
obj->gzip_start = bo->ims_obj->gzip_start;
obj->gzip_last = bo->ims_obj->gzip_last;
obj->gzip_stop = bo->ims_obj->gzip_stop;
/* XXX: ESI */
if (bo->ims_obj->vary != NULL) {
obj->vary = (void *)WS_Copy(obj->http->ws,
bo->ims_obj->vary, vl);
assert(vl == VRY_Validate(obj->vary));
}
obj->vxid = bo->vsl->wid;
obj->http->logtag = HTTP_Obj;
/* XXX: we should have our own HTTP_A_CONDFETCH */
http_FilterResp(bo->ims_obj->http, obj->http, HTTPH_A_INS);
http_CopyHome(obj->http);
AZ(WS_Overflowed(bo->ws_o));
VBO_setstate(bo, BOS_FETCHING);
HSH_Unbusy(&wrk->stats, obj->objcore);
if (!(obj->objcore->flags & OC_F_PRIVATE)) {
EXP_Insert(obj->objcore);
AN(obj->objcore->ban);
}
st = NULL;
al = 0;
oi = ObjIterBegin(wrk, bo->ims_obj);
do {
ois = ObjIter(oi, &sp, &sl);
while (sl > 0) {
if (st == NULL) {
st = VFP_GetStorage(bo, bo->ims_obj->len - al);
XXXAN(st);
}
tl = sl;
if (tl > st->space - st->len)
tl = st->space - st->len;
memcpy(st->ptr + st->len, sp, tl);
al += tl;
sp = (char *)sp + tl;
sl -= tl;
VBO_extend(bo, al);
if (st->len == st->space)
st = NULL;
}
} while (ois == OIS_DATA || ois == OIS_STREAM);
ObjIterEnd(&oi);
bo->stats = NULL;
assert(al == bo->ims_obj->len);
assert(obj->len == al);
if (bo->state != BOS_FAILED)
VBO_setstate(bo, BOS_FINISHED);
HSH_Complete(obj->objcore);
return (F_STP_DONE);
}
static enum fetch_step
vbf_stp_fetch(struct worker *wrk, struct busyobj *bo)
{
struct http *hp, *hp2;
char *b;
uint16_t nhttp;
unsigned l;
struct vsb *vary = NULL;
int varyl = 0;
struct object *obj;
ssize_t est = -1;
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
CHECK_OBJ_NOTNULL(bo, BUSYOBJ_MAGIC);
assert(wrk->handling == VCL_RET_DELIVER);
/*
* The VCL variables beresp.do_g[un]zip tells us how we want the
* object processed before it is stored.
*
* The backend Content-Encoding header tells us what we are going
* to receive, which we classify in the following three classes:
*
* "Content-Encoding: gzip" --> object is gzip'ed.
* no Content-Encoding --> object is not gzip'ed.
* anything else --> do nothing wrt gzip
*
* XXX: BS_NONE/cl==0 should avoid gzip/gunzip
*/
/* We do nothing unless the param is set */
if (!cache_param->http_gzip_support)
bo->do_gzip = bo->do_gunzip = 0;
bo->is_gzip = http_HdrIs(bo->beresp, H_Content_Encoding, "gzip");
bo->is_gunzip = !http_GetHdr(bo->beresp, H_Content_Encoding, NULL);
/* It can't be both */
assert(bo->is_gzip == 0 || bo->is_gunzip == 0);
/* We won't gunzip unless it is gzip'ed */
if (bo->do_gunzip && !bo->is_gzip)
bo->do_gunzip = 0;
/* If we do gunzip, remove the C-E header */
if (bo->do_gunzip)
http_Unset(bo->beresp, H_Content_Encoding);
/* We wont gzip unless it is ungziped */
if (bo->do_gzip && !bo->is_gunzip)
bo->do_gzip = 0;
/* If we do gzip, add the C-E header */
if (bo->do_gzip)
http_SetHeader(bo->beresp, "Content-Encoding: gzip");
/* But we can't do both at the same time */
assert(bo->do_gzip == 0 || bo->do_gunzip == 0);
if (bo->vbc != NULL)
est = V1F_Setup_Fetch(bo);
if (bo->do_gunzip || (bo->is_gzip && bo->do_esi)) {
RFC2616_Weaken_Etag(bo->beresp);
VFP_Push(bo, vfp_gunzip_pull, 0);
}
if (bo->do_esi && bo->do_gzip) {
VFP_Push(bo, vfp_esi_gzip_pull, 0);
RFC2616_Weaken_Etag(bo->beresp);
} else if (bo->do_esi && bo->is_gzip && !bo->do_gunzip) {
VFP_Push(bo, vfp_esi_gzip_pull, 0);
RFC2616_Weaken_Etag(bo->beresp);
} else if (bo->do_esi) {
VFP_Push(bo, vfp_esi_pull, 0);
} else if (bo->do_gzip) {
VFP_Push(bo, vfp_gzip_pull, 0);
RFC2616_Weaken_Etag(bo->beresp);
} else if (bo->is_gzip && !bo->do_gunzip) {
VFP_Push(bo, vfp_testgunzip_pull, 0);
}
if (bo->fetch_objcore->flags & OC_F_PRIVATE)
AN(bo->uncacheable);
/* No reason to try streaming a non-existing body */
if (bo->htc.body_status == BS_NONE)
bo->do_stream = 0;
l = 0;
/* Create Vary instructions */
if (!(bo->fetch_objcore->flags & OC_F_PRIVATE)) {
varyl = VRY_Create(bo, &vary);
if (varyl > 0) {
AN(vary);
assert(varyl == VSB_len(vary));
l += varyl;
} else if (varyl < 0) {
/*
* Vary parse error
* Complain about it, and make this a pass.
*/
VSLb(bo->vsl, SLT_Error,
"Illegal 'Vary' header from backend, "
"making this a pass.");
bo->uncacheable = 1;
AZ(vary);
} else
/* No vary */
AZ(vary);
}
l += http_EstimateWS(bo->beresp,
bo->uncacheable ? HTTPH_R_PASS : HTTPH_A_INS, &nhttp);
if (bo->uncacheable)
bo->fetch_objcore->flags |= OC_F_PASS;
if (bo->uncacheable ||
bo->exp.ttl+bo->exp.grace+bo->exp.keep < cache_param->shortlived)
bo->storage_hint = TRANSIENT_STORAGE;
AZ(bo->stats);
bo->stats = &wrk->stats;
AN(bo->fetch_objcore);
obj = STV_NewObject(bo, bo->storage_hint, l, nhttp);
if (obj == NULL) {
/*
* Try to salvage the transaction by allocating a
* shortlived object on Transient storage.
*/
if (bo->exp.ttl > cache_param->shortlived)
bo->exp.ttl = cache_param->shortlived;
bo->exp.grace = 0.0;
bo->exp.keep = 0.0;
obj = STV_NewObject(bo, TRANSIENT_STORAGE, l, nhttp);
}
if (obj == NULL) {
bo->stats = NULL;
(void)VFP_Error(bo, "Could not get storage");
VDI_CloseFd(&bo->vbc);
return (F_STP_DONE);
}
CHECK_OBJ_NOTNULL(obj, OBJECT_MAGIC);
bo->storage_hint = NULL;
AZ(bo->fetch_obj);
bo->fetch_obj = obj;
if (bo->do_gzip || (bo->is_gzip && !bo->do_gunzip))
obj->gziped = 1;
if (vary != NULL) {
obj->vary = (void *)WS_Copy(obj->http->ws,
VSB_data(vary), varyl);
AN(obj->vary);
(void)VRY_Validate(obj->vary);
VSB_delete(vary);
}
obj->vxid = bo->vsl->wid;
obj->response = bo->err_code;
WS_Assert(bo->ws_o);
/* Filter into object */
hp = bo->beresp;
hp2 = obj->http;
hp2->logtag = HTTP_Obj;
http_FilterResp(hp, hp2, bo->uncacheable ? HTTPH_R_PASS : HTTPH_A_INS);
http_CopyHome(hp2);
if (http_GetHdr(hp, H_Last_Modified, &b))
obj->last_modified = VTIM_parse(b);
else
obj->last_modified = floor(bo->exp.t_origin);
assert(WRW_IsReleased(wrk));
/*
* Ready to fetch the body
*/
assert(bo->refcount >= 1);
AZ(WS_Overflowed(bo->ws_o));
if (bo->do_stream)
HSH_Unbusy(&wrk->stats, obj->objcore);
assert(bo->state == BOS_REQ_DONE);
VBO_setstate(bo, BOS_FETCHING);
switch (bo->htc.body_status) {
case BS_NONE:
break;
case BS_ERROR:
/* XXX: Why not earlier ? */
bo->should_close |=
VFP_Error(bo, "error incompatible Transfer-Encoding");
break;
default:
if (bo->vbc == NULL)
(void)VFP_Error(bo, "Backend connection gone");
else
VFP_Fetch_Body(bo, est);
}
bo->stats = NULL;
bo->t_body = VTIM_mono();
if (bo->vbc != NULL) {
if (bo->should_close)
VDI_CloseFd(&bo->vbc);
else
VDI_RecycleFd(&bo->vbc);
AZ(bo->vbc);
}
http_Teardown(bo->bereq);
http_Teardown(bo->beresp);
VSLb(bo->vsl, SLT_Fetch_Body, "%u(%s)",
bo->htc.body_status, body_status_2str(bo->htc.body_status));
if (bo->state == BOS_FAILED) {
wrk->stats.fetch_failed++;
} else {
assert(bo->state == BOS_FETCHING);
VSLb(bo->vsl, SLT_Length, "%zd", obj->len);
{
/* Sanity check fetch methods accounting */
ssize_t uu;
struct storage *st;
uu = 0;
VTAILQ_FOREACH(st, &obj->store, list)
uu += st->len;
if (bo->do_stream)
/* Streaming might have started freeing stuff */
assert(uu <= obj->len);
else
assert(uu == obj->len);
}
}
if (!bo->do_stream && bo->state != BOS_FAILED)
HSH_Unbusy(&wrk->stats, obj->objcore);
if (bo->state != BOS_FAILED && !(obj->objcore->flags & OC_F_PRIVATE)) {
EXP_Insert(obj->objcore);
AN(obj->objcore->ban);
}
HSH_Complete(obj->objcore);
assert(bo->refcount >= 1);
if (bo->state != BOS_FAILED)
VBO_setstate(bo, BOS_FINISHED);
VSLb(bo->vsl, SLT_Debug, "YYY REF %d %d", bo->refcount, bo->fetch_obj->objcore->refcnt);
return (F_STP_DONE);
}
static int
cnt_fetchbody(struct worker *wrk, struct req *req)
{
struct http *hp, *hp2;
char *b;
uint16_t nhttp;
unsigned l;
struct vsb *vary = NULL;
int varyl = 0, pass;
struct busyobj *bo;
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
bo = req->busyobj;
CHECK_OBJ_NOTNULL(bo, BUSYOBJ_MAGIC);
assert(req->handling == VCL_RET_DELIVER);
if (req->objcore->objhead == NULL) {
/* This is a pass from vcl_recv */
pass = 1;
/* VCL may have fiddled this, but that doesn't help */
bo->exp.ttl = -1.;
} else if (bo->do_pass) {
pass = 1;
} else {
/* regular object */
pass = 0;
}
/*
* The VCL variables beresp.do_g[un]zip tells us how we want the
* object processed before it is stored.
*
* The backend Content-Encoding header tells us what we are going
* to receive, which we classify in the following three classes:
*
* "Content-Encoding: gzip" --> object is gzip'ed.
* no Content-Encoding --> object is not gzip'ed.
* anything else --> do nothing wrt gzip
*
*/
/* We do nothing unless the param is set */
if (!cache_param->http_gzip_support)
bo->do_gzip = bo->do_gunzip = 0;
bo->is_gzip = http_HdrIs(bo->beresp, H_Content_Encoding, "gzip");
bo->is_gunzip = !http_GetHdr(bo->beresp, H_Content_Encoding, NULL);
/* It can't be both */
assert(bo->is_gzip == 0 || bo->is_gunzip == 0);
/* We won't gunzip unless it is gzip'ed */
if (bo->do_gunzip && !bo->is_gzip)
bo->do_gunzip = 0;
/* If we do gunzip, remove the C-E header */
if (bo->do_gunzip)
http_Unset(bo->beresp, H_Content_Encoding);
/* We wont gzip unless it is ungziped */
if (bo->do_gzip && !bo->is_gunzip)
bo->do_gzip = 0;
/* If we do gzip, add the C-E header */
if (bo->do_gzip)
http_SetHeader(bo->beresp, "Content-Encoding: gzip");
/* But we can't do both at the same time */
assert(bo->do_gzip == 0 || bo->do_gunzip == 0);
/* ESI takes precedence and handles gzip/gunzip itself */
if (bo->do_esi)
bo->vfp = &vfp_esi;
else if (bo->do_gunzip)
bo->vfp = &vfp_gunzip;
else if (bo->do_gzip)
bo->vfp = &vfp_gzip;
else if (bo->is_gzip)
bo->vfp = &vfp_testgzip;
if (bo->do_esi || req->esi_level > 0)
bo->do_stream = 0;
if (!req->wantbody)
bo->do_stream = 0;
/* No reason to try streaming a non-existing body */
if (bo->body_status == BS_NONE)
bo->do_stream = 0;
l = http_EstimateWS(bo->beresp,
pass ? HTTPH_R_PASS : HTTPH_A_INS, &nhttp);
/* Create Vary instructions */
if (req->objcore->objhead != NULL) {
CHECK_OBJ_NOTNULL(req->objcore, OBJCORE_MAGIC);
vary = VRY_Create(req, bo->beresp);
if (vary != NULL) {
varyl = VSB_len(vary);
assert(varyl > 0);
l += varyl;
}
}
/*
* Space for producing a Content-Length: header including padding
* A billion gigabytes is enough for anybody.
*/
l += strlen("Content-Length: XxxXxxXxxXxxXxxXxx") + sizeof(void *);
if (bo->exp.ttl < cache_param->shortlived ||
req->objcore == NULL)
req->storage_hint = TRANSIENT_STORAGE;
AZ(bo->stats);
bo->stats = &wrk->stats;
req->obj = STV_NewObject(bo, &req->objcore, req->storage_hint, l,
nhttp);
if (req->obj == NULL) {
/*
* Try to salvage the transaction by allocating a
* shortlived object on Transient storage.
*/
if (bo->exp.ttl > cache_param->shortlived)
bo->exp.ttl = cache_param->shortlived;
bo->exp.grace = 0.0;
bo->exp.keep = 0.0;
req->obj = STV_NewObject(bo, &req->objcore, TRANSIENT_STORAGE,
l, nhttp);
}
bo->stats = NULL;
if (req->obj == NULL) {
req->err_code = 503;
req->req_step = R_STP_ERROR;
VDI_CloseFd(&bo->vbc);
VBO_DerefBusyObj(wrk, &req->busyobj);
return (0);
}
CHECK_OBJ_NOTNULL(req->obj, OBJECT_MAGIC);
req->storage_hint = NULL;
AZ(bo->fetch_obj);
bo->fetch_obj = req->obj;
if (bo->do_gzip || (bo->is_gzip && !bo->do_gunzip))
req->obj->gziped = 1;
if (vary != NULL) {
req->obj->vary = (void *)WS_Copy(req->obj->http->ws,
VSB_data(vary), varyl);
AN(req->obj->vary);
VRY_Validate(req->obj->vary);
VSB_delete(vary);
}
req->obj->vxid = bo->vsl->wid;
req->obj->response = req->err_code;
WS_Assert(req->obj->ws_o);
/* Filter into object */
hp = bo->beresp;
hp2 = req->obj->http;
hp2->logtag = HTTP_Obj;
http_FilterResp(hp, hp2, pass ? HTTPH_R_PASS : HTTPH_A_INS);
http_CopyHome(hp2);
if (http_GetHdr(hp, H_Last_Modified, &b))
req->obj->last_modified = VTIM_parse(b);
else
req->obj->last_modified = floor(bo->exp.entered);
assert(WRW_IsReleased(wrk));
/*
* If we can deliver a 304 reply, we don't bother streaming.
* Notice that vcl_deliver{} could still nuke the headers
* that allow the 304, in which case we return 200 non-stream.
*/
if (req->obj->response == 200 &&
req->http->conds &&
RFC2616_Do_Cond(req))
bo->do_stream = 0;
/*
* Ready to fetch the body
*/
bo->fetch_task.func = FetchBody;
bo->fetch_task.priv = bo;
assert(bo->refcount == 2); /* one for each thread */
if (req->obj->objcore->objhead != NULL) {
EXP_Insert(req->obj);
AN(req->obj->objcore->ban);
AZ(req->obj->ws_o->overflow);
HSH_Unbusy(&wrk->stats, req->obj->objcore);
}
if (!bo->do_stream ||
Pool_Task(wrk->pool, &bo->fetch_task, POOL_NO_QUEUE))
FetchBody(wrk, bo);
if (req->obj->objcore->objhead != NULL)
HSH_Ref(req->obj->objcore);
if (bo->state == BOS_FINISHED) {
VBO_DerefBusyObj(wrk, &req->busyobj);
} else if (bo->state == BOS_FAILED) {
/* handle early failures */
HSH_Deref(&wrk->stats, NULL, &req->obj);
VBO_DerefBusyObj(wrk, &req->busyobj);
req->err_code = 503;
req->req_step = R_STP_ERROR;
return (0);
}
assert(WRW_IsReleased(wrk));
req->req_step = R_STP_PREPRESP;
return (0);
}
static ssize_t
vrb_pull(struct req *req, ssize_t maxsize, objiterate_f *func, void *priv)
{
ssize_t l, r = 0, yet;
struct vfp_ctx *vfc;
uint8_t *ptr;
enum vfp_status vfps = VFP_ERROR;
CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
CHECK_OBJ_NOTNULL(req->htc, HTTP_CONN_MAGIC);
CHECK_OBJ_NOTNULL(req->htc->vfc, VFP_CTX_MAGIC);
vfc = req->htc->vfc;
req->body_oc = HSH_Private(req->wrk);
AN(req->body_oc);
XXXAN(STV_NewObject(req->wrk, req->body_oc, TRANSIENT_STORAGE, 8));
vfc->oc = req->body_oc;
if (VFP_Open(vfc) < 0) {
req->req_body_status = REQ_BODY_FAIL;
HSH_DerefBoc(req->wrk, req->body_oc);
AZ(HSH_DerefObjCore(req->wrk, &req->body_oc, 0));
return (-1);
}
AZ(req->req_bodybytes);
AN(req->htc);
yet = req->htc->content_length;
if (yet < 0)
yet = 0;
do {
AZ(vfc->failed);
if (maxsize >= 0 && req->req_bodybytes > maxsize) {
(void)VFP_Error(vfc, "Request body too big to cache");
break;
}
l = yet;
if (VFP_GetStorage(vfc, &l, &ptr) != VFP_OK)
break;
AZ(vfc->failed);
AN(ptr);
AN(l);
vfps = VFP_Suck(vfc, ptr, &l);
if (l > 0 && vfps != VFP_ERROR) {
req->req_bodybytes += l;
req->acct.req_bodybytes += l;
if (yet >= l)
yet -= l;
if (func != NULL) {
r = func(priv, 1, ptr, l);
if (r)
break;
} else {
ObjExtend(req->wrk, req->body_oc, l);
}
}
} while (vfps == VFP_OK);
VFP_Close(vfc);
VSLb_ts_req(req, "ReqBody", VTIM_real());
if (func != NULL) {
HSH_DerefBoc(req->wrk, req->body_oc);
AZ(HSH_DerefObjCore(req->wrk, &req->body_oc, 0));
if (vfps != VFP_END) {
req->req_body_status = REQ_BODY_FAIL;
if (r == 0)
r = -1;
}
return (r);
}
ObjTrimStore(req->wrk, req->body_oc);
AZ(ObjSetU64(req->wrk, req->body_oc, OA_LEN, req->req_bodybytes));
HSH_DerefBoc(req->wrk, req->body_oc);
if (vfps != VFP_END) {
req->req_body_status = REQ_BODY_FAIL;
AZ(HSH_DerefObjCore(req->wrk, &req->body_oc, 0));
return (-1);
}
assert(req->req_bodybytes >= 0);
if (req->req_bodybytes != req->htc->content_length) {
/* We must update also the "pristine" req.* copy */
http_Unset(req->http0, H_Content_Length);
http_Unset(req->http0, H_Transfer_Encoding);
http_PrintfHeader(req->http0, "Content-Length: %ju",
(uintmax_t)req->req_bodybytes);
http_Unset(req->http, H_Content_Length);
http_Unset(req->http, H_Transfer_Encoding);
http_PrintfHeader(req->http, "Content-Length: %ju",
(uintmax_t)req->req_bodybytes);
}
req->req_body_status = REQ_BODY_CACHED;
return (req->req_bodybytes);
}
static int
cnt_error(struct worker *wrk, struct req *req)
{
struct http *h;
struct busyobj *bo;
char date[40];
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
AZ(req->objcore);
AZ(req->obj);
AZ(req->busyobj);
bo = VBO_GetBusyObj(wrk, req);
req->busyobj = bo;
AZ(bo->stats);
bo->stats = &wrk->stats;
req->objcore = HSH_NewObjCore(wrk);
req->obj = STV_NewObject(bo, &req->objcore,
TRANSIENT_STORAGE, cache_param->http_resp_size,
(uint16_t)cache_param->http_max_hdr);
bo->stats = NULL;
if (req->obj == NULL) {
req->doclose = SC_OVERLOAD;
req->director = NULL;
http_Teardown(bo->beresp);
http_Teardown(bo->bereq);
return(1);
}
CHECK_OBJ_NOTNULL(req->obj, OBJECT_MAGIC);
req->obj->vxid = bo->vsl->wid;
req->obj->exp.entered = req->t_req;
h = req->obj->http;
if (req->err_code < 100 || req->err_code > 999)
req->err_code = 501;
http_PutProtocol(h, "HTTP/1.1");
http_PutStatus(h, req->err_code);
VTIM_format(W_TIM_real(wrk), date);
http_PrintfHeader(h, "Date: %s", date);
http_SetHeader(h, "Server: Varnish");
if (req->err_reason != NULL)
http_PutResponse(h, req->err_reason);
else
http_PutResponse(h, http_StatusMessage(req->err_code));
VCL_error_method(req);
if (req->handling == VCL_RET_RESTART &&
req->restarts < cache_param->max_restarts) {
HSH_Drop(wrk, &req->obj);
VBO_DerefBusyObj(wrk, &req->busyobj);
req->req_step = R_STP_RESTART;
return (0);
} else if (req->handling == VCL_RET_RESTART)
req->handling = VCL_RET_DELIVER;
/* We always close when we take this path */
req->doclose = SC_TX_ERROR;
req->wantbody = 1;
assert(req->handling == VCL_RET_DELIVER);
req->err_code = 0;
req->err_reason = NULL;
http_Teardown(bo->bereq);
VBO_DerefBusyObj(wrk, &req->busyobj);
req->req_step = R_STP_PREPRESP;
return (0);
}
ssize_t
VRB_Cache(struct req *req, ssize_t maxsize)
{
ssize_t l, yet;
struct vfp_ctx *vfc;
uint8_t *ptr;
enum vfp_status vfps = VFP_ERROR;
CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
assert (req->req_step == R_STP_RECV);
switch(req->req_body_status) {
case REQ_BODY_CACHED:
return (req->req_bodybytes);
case REQ_BODY_FAIL:
return (-1);
case REQ_BODY_NONE:
return (0);
case REQ_BODY_WITHOUT_LEN:
case REQ_BODY_WITH_LEN:
break;
default:
WRONG("Wrong req_body_status in VRB_Cache()");
}
CHECK_OBJ_NOTNULL(req->htc, HTTP_CONN_MAGIC);
vfc = req->htc->vfc;
VFP_Setup(vfc);
vfc->wrk = req->wrk;
if (req->htc->content_length > maxsize) {
req->req_body_status = REQ_BODY_FAIL;
(void)VFP_Error(vfc, "Request body too big to cache");
return (-1);
}
req->body_oc = HSH_Private(req->wrk);
AN(req->body_oc);
XXXAN(STV_NewObject(req->wrk, req->body_oc, TRANSIENT_STORAGE, 8));
vfc->http = req->http;
vfc->oc = req->body_oc;
V1F_Setup_Fetch(vfc, req->htc);
if (VFP_Open(vfc) < 0) {
req->req_body_status = REQ_BODY_FAIL;
return (-1);
}
AZ(req->req_bodybytes);
AN(req->htc);
yet = req->htc->content_length;
if (yet < 0)
yet = 0;
do {
AZ(vfc->failed);
if (req->req_bodybytes > maxsize) {
req->req_body_status = REQ_BODY_FAIL;
(void)VFP_Error(vfc, "Request body too big to cache");
VFP_Close(vfc);
return(-1);
}
l = yet;
if (VFP_GetStorage(vfc, &l, &ptr) != VFP_OK)
break;
AZ(vfc->failed);
AN(ptr);
AN(l);
vfps = VFP_Suck(vfc, ptr, &l);
if (l > 0 && vfps != VFP_ERROR) {
req->req_bodybytes += l;
req->acct.req_bodybytes += l;
if (yet >= l)
yet -= l;
ObjExtend(req->wrk, req->body_oc, l);
}
} while (vfps == VFP_OK);
VFP_Close(vfc);
ObjTrimStore(req->wrk, req->body_oc);
/* XXX: check missing:
if (req->htc->content_length >= 0)
MUSTBE (req->req_bodybytes == req->htc->content_length);
*/
if (vfps == VFP_END) {
assert(req->req_bodybytes >= 0);
if (req->req_bodybytes != req->htc->content_length) {
/* We must update also the "pristine" req.* copy */
http_Unset(req->http0, H_Content_Length);
http_Unset(req->http0, H_Transfer_Encoding);
http_PrintfHeader(req->http0, "Content-Length: %ju",
(uintmax_t)req->req_bodybytes);
http_Unset(req->http, H_Content_Length);
http_Unset(req->http, H_Transfer_Encoding);
http_PrintfHeader(req->http, "Content-Length: %ju",
(uintmax_t)req->req_bodybytes);
}
req->req_body_status = REQ_BODY_CACHED;
} else {
req->req_body_status = REQ_BODY_FAIL;
}
VSLb_ts_req(req, "ReqBody", VTIM_real());
return (vfps == VFP_END ? req->req_bodybytes : -1);
}
static enum req_fsm_nxt
cnt_error(struct worker *wrk, struct req *req)
{
struct http *h;
struct busyobj *bo;
char date[40];
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
AZ(req->objcore);
AZ(req->obj);
req->acct_req.error++;
bo = VBO_GetBusyObj(wrk, req);
AZ(bo->stats);
bo->stats = &wrk->stats;
bo->fetch_objcore = HSH_Private(wrk);
bo->fetch_obj = STV_NewObject(bo,
TRANSIENT_STORAGE, cache_param->http_resp_size,
(uint16_t)cache_param->http_max_hdr);
req->obj = bo->fetch_obj;
bo->stats = NULL;
if (req->obj == NULL) {
req->doclose = SC_OVERLOAD;
req->director = NULL;
AZ(HSH_DerefObjCore(&wrk->stats, &bo->fetch_objcore));
bo->fetch_objcore = NULL;
http_Teardown(bo->beresp);
http_Teardown(bo->bereq);
VBO_DerefBusyObj(wrk, &bo);
return (REQ_FSM_DONE);
}
CHECK_OBJ_NOTNULL(req->obj, OBJECT_MAGIC);
AZ(req->objcore);
req->obj->vxid = bo->vsl->wid;
req->obj->exp.entered = req->t_req;
h = req->obj->http;
if (req->err_code < 100 || req->err_code > 999)
req->err_code = 501;
http_PutProtocol(h, "HTTP/1.1");
http_PutStatus(h, req->err_code);
VTIM_format(W_TIM_real(wrk), date);
http_PrintfHeader(h, "Date: %s", date);
http_SetHeader(h, "Server: Varnish");
CHECK_OBJ_NOTNULL(req->obj, OBJECT_MAGIC);
HSH_Ref(req->obj->objcore);
if (req->err_reason != NULL)
http_PutResponse(h, req->err_reason);
else
http_PutResponse(h, http_StatusMessage(req->err_code));
VCL_error_method(req->vcl, wrk, req, NULL, req->http->ws);
/* Stop the insanity before it turns "Hotel California" on us */
if (req->restarts >= cache_param->max_restarts)
wrk->handling = VCL_RET_DELIVER;
if (wrk->handling == VCL_RET_RESTART) {
VBO_DerefBusyObj(wrk, &bo);
HSH_Drop(wrk, &req->obj);
req->req_step = R_STP_RESTART;
return (REQ_FSM_MORE);
}
CHECK_OBJ_NOTNULL(req->obj, OBJECT_MAGIC);
/* We always close when we take this path */
req->doclose = SC_TX_ERROR;
req->wantbody = 1;
assert(wrk->handling == VCL_RET_DELIVER);
req->err_code = 0;
req->err_reason = NULL;
http_Teardown(bo->bereq);
CHECK_OBJ_NOTNULL(req->obj, OBJECT_MAGIC);
VBO_DerefBusyObj(wrk, &bo);
req->req_step = R_STP_DELIVER;
CHECK_OBJ_NOTNULL(req->obj, OBJECT_MAGIC);
return (REQ_FSM_MORE);
}
static int
cnt_fetchbody(struct sess *sp)
{
int i;
struct http *hp, *hp2;
char *b;
uint16_t nhttp;
unsigned l;
struct vsb *vary = NULL;
int varyl = 0, pass;
struct worker *wrk;
CHECK_OBJ_NOTNULL(sp, SESS_MAGIC);
wrk = sp->wrk;
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
CHECK_OBJ_NOTNULL(wrk->busyobj, BUSYOBJ_MAGIC);
assert(sp->handling == VCL_RET_HIT_FOR_PASS ||
sp->handling == VCL_RET_DELIVER);
if (wrk->objcore == NULL) {
/* This is a pass from vcl_recv */
pass = 1;
/* VCL may have fiddled this, but that doesn't help */
wrk->busyobj->exp.ttl = -1.;
} else if (sp->handling == VCL_RET_HIT_FOR_PASS) {
/* pass from vcl_fetch{} -> hit-for-pass */
/* XXX: the bereq was not filtered pass... */
pass = 1;
} else {
/* regular object */
pass = 0;
}
/*
* The VCL variables beresp.do_g[un]zip tells us how we want the
* object processed before it is stored.
*
* The backend Content-Encoding header tells us what we are going
* to receive, which we classify in the following three classes:
*
* "Content-Encoding: gzip" --> object is gzip'ed.
* no Content-Encoding --> object is not gzip'ed.
* anything else --> do nothing wrt gzip
*
*/
/* We do nothing unless the param is set */
if (!cache_param->http_gzip_support)
wrk->busyobj->do_gzip = wrk->busyobj->do_gunzip = 0;
wrk->busyobj->is_gzip =
http_HdrIs(wrk->busyobj->beresp, H_Content_Encoding, "gzip");
wrk->busyobj->is_gunzip =
!http_GetHdr(wrk->busyobj->beresp, H_Content_Encoding, NULL);
/* It can't be both */
assert(wrk->busyobj->is_gzip == 0 || wrk->busyobj->is_gunzip == 0);
/* We won't gunzip unless it is gzip'ed */
if (wrk->busyobj->do_gunzip && !wrk->busyobj->is_gzip)
wrk->busyobj->do_gunzip = 0;
/* If we do gunzip, remove the C-E header */
if (wrk->busyobj->do_gunzip)
http_Unset(wrk->busyobj->beresp, H_Content_Encoding);
/* We wont gzip unless it is ungziped */
if (wrk->busyobj->do_gzip && !wrk->busyobj->is_gunzip)
wrk->busyobj->do_gzip = 0;
/* If we do gzip, add the C-E header */
if (wrk->busyobj->do_gzip)
http_SetHeader(wrk, sp->vsl_id, wrk->busyobj->beresp,
"Content-Encoding: gzip");
/* But we can't do both at the same time */
assert(wrk->busyobj->do_gzip == 0 || wrk->busyobj->do_gunzip == 0);
/* ESI takes precedence and handles gzip/gunzip itself */
if (wrk->busyobj->do_esi)
wrk->busyobj->vfp = &vfp_esi;
else if (wrk->busyobj->do_gunzip)
wrk->busyobj->vfp = &vfp_gunzip;
else if (wrk->busyobj->do_gzip)
wrk->busyobj->vfp = &vfp_gzip;
else if (wrk->busyobj->is_gzip)
wrk->busyobj->vfp = &vfp_testgzip;
if (wrk->busyobj->do_esi || sp->esi_level > 0)
wrk->busyobj->do_stream = 0;
if (!sp->wantbody)
wrk->busyobj->do_stream = 0;
l = http_EstimateWS(wrk->busyobj->beresp,
pass ? HTTPH_R_PASS : HTTPH_A_INS, &nhttp);
/* Create Vary instructions */
if (wrk->objcore != NULL) {
CHECK_OBJ_NOTNULL(wrk->objcore, OBJCORE_MAGIC);
vary = VRY_Create(sp, wrk->busyobj->beresp);
if (vary != NULL) {
varyl = VSB_len(vary);
assert(varyl > 0);
l += varyl;
}
}
/*
* Space for producing a Content-Length: header including padding
* A billion gigabytes is enough for anybody.
*/
l += strlen("Content-Length: XxxXxxXxxXxxXxxXxx") + sizeof(void *);
if (wrk->busyobj->exp.ttl < cache_param->shortlived ||
wrk->objcore == NULL)
wrk->storage_hint = TRANSIENT_STORAGE;
wrk->obj = STV_NewObject(wrk, wrk->storage_hint, l, nhttp);
if (wrk->obj == NULL) {
/*
* Try to salvage the transaction by allocating a
* shortlived object on Transient storage.
*/
wrk->obj = STV_NewObject(wrk, TRANSIENT_STORAGE, l, nhttp);
if (wrk->busyobj->exp.ttl > cache_param->shortlived)
wrk->busyobj->exp.ttl = cache_param->shortlived;
wrk->busyobj->exp.grace = 0.0;
wrk->busyobj->exp.keep = 0.0;
}
if (wrk->obj == NULL) {
sp->err_code = 503;
sp->step = STP_ERROR;
VDI_CloseFd(wrk, &wrk->busyobj->vbc);
VBO_DerefBusyObj(wrk, &wrk->busyobj);
return (0);
}
CHECK_OBJ_NOTNULL(wrk->obj, OBJECT_MAGIC);
wrk->storage_hint = NULL;
if (wrk->busyobj->do_gzip ||
(wrk->busyobj->is_gzip && !wrk->busyobj->do_gunzip))
wrk->obj->gziped = 1;
if (vary != NULL) {
wrk->obj->vary = (void *)WS_Alloc(wrk->obj->http->ws, varyl);
AN(wrk->obj->vary);
memcpy(wrk->obj->vary, VSB_data(vary), varyl);
VRY_Validate(wrk->obj->vary);
VSB_delete(vary);
}
wrk->obj->xid = sp->xid;
wrk->obj->response = sp->err_code;
WS_Assert(wrk->obj->ws_o);
/* Filter into object */
hp = wrk->busyobj->beresp;
hp2 = wrk->obj->http;
hp2->logtag = HTTP_Obj;
http_CopyResp(hp2, hp);
http_FilterFields(wrk, sp->vsl_id, hp2, hp,
pass ? HTTPH_R_PASS : HTTPH_A_INS);
http_CopyHome(wrk, sp->vsl_id, hp2);
if (http_GetHdr(hp, H_Last_Modified, &b))
wrk->obj->last_modified = VTIM_parse(b);
else
wrk->obj->last_modified = floor(wrk->busyobj->exp.entered);
assert(WRW_IsReleased(wrk));
/*
* If we can deliver a 304 reply, we don't bother streaming.
* Notice that vcl_deliver{} could still nuke the headers
* that allow the 304, in which case we return 200 non-stream.
*/
if (wrk->obj->response == 200 &&
sp->http->conds &&
RFC2616_Do_Cond(sp))
wrk->busyobj->do_stream = 0;
AssertObjCorePassOrBusy(wrk->obj->objcore);
if (wrk->busyobj->do_stream) {
sp->step = STP_PREPRESP;
return (0);
}
/* Use unmodified headers*/
i = FetchBody(wrk, wrk->obj);
http_Setup(wrk->busyobj->bereq, NULL);
http_Setup(wrk->busyobj->beresp, NULL);
wrk->busyobj->vfp = NULL;
assert(WRW_IsReleased(wrk));
AZ(wrk->busyobj->vbc);
AN(sp->director);
if (i) {
HSH_Drop(wrk);
VBO_DerefBusyObj(wrk, &wrk->busyobj);
AZ(wrk->obj);
sp->err_code = 503;
sp->step = STP_ERROR;
return (0);
}
if (wrk->obj->objcore != NULL) {
EXP_Insert(wrk->obj);
AN(wrk->obj->objcore);
AN(wrk->obj->objcore->ban);
HSH_Unbusy(wrk);
}
VBO_DerefBusyObj(wrk, &wrk->busyobj);
wrk->acct_tmp.fetch++;
sp->step = STP_PREPRESP;
return (0);
}
static int
cnt_error(struct sess *sp)
{
struct http *h;
char date[40];
struct worker *wrk;
CHECK_OBJ_NOTNULL(sp, SESS_MAGIC);
wrk = sp->wrk;
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
if (wrk->obj == NULL) {
HSH_Prealloc(sp);
AZ(wrk->busyobj);
wrk->busyobj = VBO_GetBusyObj(wrk);
wrk->obj = STV_NewObject(wrk, NULL, cache_param->http_resp_size,
(uint16_t)cache_param->http_max_hdr);
if (wrk->obj == NULL)
wrk->obj = STV_NewObject(wrk, TRANSIENT_STORAGE,
cache_param->http_resp_size,
(uint16_t)cache_param->http_max_hdr);
if (wrk->obj == NULL) {
sp->doclose = "Out of objects";
sp->director = NULL;
http_Setup(wrk->busyobj->beresp, NULL);
http_Setup(wrk->busyobj->bereq, NULL);
sp->step = STP_DONE;
return(0);
}
AN(wrk->obj);
wrk->obj->xid = sp->xid;
wrk->obj->exp.entered = sp->t_req;
} else {
CHECK_OBJ_NOTNULL(wrk->busyobj, BUSYOBJ_MAGIC);
/* XXX: Null the headers ? */
}
CHECK_OBJ_NOTNULL(wrk->obj, OBJECT_MAGIC);
h = wrk->obj->http;
if (sp->err_code < 100 || sp->err_code > 999)
sp->err_code = 501;
http_PutProtocol(wrk, sp->vsl_id, h, "HTTP/1.1");
http_PutStatus(h, sp->err_code);
VTIM_format(W_TIM_real(wrk), date);
http_PrintfHeader(wrk, sp->vsl_id, h, "Date: %s", date);
http_SetHeader(wrk, sp->vsl_id, h, "Server: Varnish");
if (sp->err_reason != NULL)
http_PutResponse(wrk, sp->vsl_id, h, sp->err_reason);
else
http_PutResponse(wrk, sp->vsl_id, h,
http_StatusMessage(sp->err_code));
VCL_error_method(sp);
if (sp->handling == VCL_RET_RESTART &&
sp->restarts < cache_param->max_restarts) {
HSH_Drop(wrk);
VBO_DerefBusyObj(wrk, &wrk->busyobj);
sp->director = NULL;
sp->restarts++;
sp->step = STP_RECV;
return (0);
} else if (sp->handling == VCL_RET_RESTART)
sp->handling = VCL_RET_DELIVER;
/* We always close when we take this path */
sp->doclose = "error";
sp->wantbody = 1;
assert(sp->handling == VCL_RET_DELIVER);
sp->err_code = 0;
sp->err_reason = NULL;
http_Setup(wrk->busyobj->bereq, NULL);
VBO_DerefBusyObj(wrk, &wrk->busyobj);
sp->step = STP_PREPRESP;
return (0);
}
