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#include "psgi.h"
extern struct uwsgi_server uwsgi;
int psgi_response(struct wsgi_request *wsgi_req, AV *response) {
SV **status_code, **hitem ;
AV *headers, *body =NULL;
STRLEN hlen, hlen2;
int i;
char *chitem, *chitem2;
SV **harakiri;
if (wsgi_req->async_force_again) {
wsgi_req->async_force_again = 0;
wsgi_req->switches++;
SV *chunk = uwsgi_perl_obj_call(wsgi_req->async_placeholder, "getline");
if (!chunk) {
uwsgi_500(wsgi_req);
return UWSGI_OK;
}
chitem = SvPV( chunk, hlen);
if (hlen <= 0) {
SvREFCNT_dec(chunk);
if (wsgi_req->async_force_again) {
return UWSGI_AGAIN;
}
SV *closed = uwsgi_perl_obj_call(wsgi_req->async_placeholder, "close");
if (closed) {
SvREFCNT_dec(closed);
}
// check for psgix.harakiri
harakiri = hv_fetch((HV*)SvRV( (SV*)wsgi_req->async_environ), "psgix.harakiri.commit", 21, 0);
if (harakiri) {
if (SvTRUE(*harakiri)) wsgi_req->async_plagued = 1;
}
SvREFCNT_dec(wsgi_req->async_result);
return UWSGI_OK;
}
uwsgi_response_write_body_do(wsgi_req, chitem, hlen);
uwsgi_pl_check_write_errors {
SvREFCNT_dec(chunk);
return UWSGI_OK;
}
SvREFCNT_dec(chunk);
wsgi_req->async_force_again = 1;
return UWSGI_AGAIN;
}
if (SvTYPE(response) != SVt_PVAV) {
uwsgi_log("invalid PSGI response type\n");
return UWSGI_OK;
}
if (av_len(response) == -1) {
// deliberately empty response
wsgi_req->status = 101;
// don't actually close socket, it must be closed by application itself
wsgi_req->fd_closed = 1;
return UWSGI_OK;
}
status_code = av_fetch(response, 0, 0);
if (!status_code) { uwsgi_log("invalid PSGI status code\n"); return UWSGI_OK;}
char *status_str = SvPV(*status_code, hlen);
if (uwsgi_response_prepare_headers(wsgi_req, status_str, hlen)) return UWSGI_OK;
hitem = av_fetch(response, 1, 0);
if (!hitem || !SvRV(*hitem) || SvTYPE(SvRV(*hitem)) != SVt_PVAV) { uwsgi_log("invalid PSGI headers\n"); return UWSGI_OK;}
headers = (AV *) SvRV(*hitem);
if (!headers) { uwsgi_log("invalid PSGI headers\n"); return UWSGI_OK;}
// generate headers
int headers_len = (int) av_len(headers);
for(i=0; i<=headers_len; i++) {
hitem = av_fetch(headers,i,0);
if (!*hitem) {
uwsgi_log("invalid PSGI headers\n"); return UWSGI_OK;
}
chitem = SvPV(*hitem, hlen);
if (i+1 > headers_len) {
uwsgi_log("invalid PSGI headers\n"); return UWSGI_OK;
}
hitem = av_fetch(headers,i+1,0);
if (!*hitem) {
uwsgi_log("invalid PSGI headers\n"); return UWSGI_OK;
}
chitem2 = SvPV(*hitem, hlen2);
if (uwsgi_response_add_header(wsgi_req, chitem, hlen, chitem2, hlen2)) return UWSGI_OK;
i++;
}
hitem = av_fetch(response, 2, 0);
if (!hitem) {
return UWSGI_OK;
}
if (!SvRV(*hitem)) { uwsgi_log("invalid PSGI response body\n") ; return UWSGI_OK; }
if (!SvROK(*hitem)) goto unsupported;
if (SvTYPE(SvRV(*hitem)) == SVt_PVGV || SvTYPE(SvRV(*hitem)) == SVt_PVHV || SvTYPE(SvRV(*hitem)) == SVt_PVMG) {
// check for fileno() method, IO class or GvIO
if (uwsgi_perl_obj_can(*hitem, "fileno", 6) || uwsgi_perl_obj_isa(*hitem, "IO") || (uwsgi_perl_obj_isa(*hitem, "GLOB") && GvIO(SvRV(*hitem))) ) {
SV *fn = uwsgi_perl_obj_call(*hitem, "fileno");
if (fn) {
if (SvTYPE(fn) == SVt_IV && SvIV(fn) >= 0) {
wsgi_req->sendfile_fd = SvIV(fn);
SvREFCNT_dec(fn);
uwsgi_response_sendfile_do(wsgi_req, wsgi_req->sendfile_fd, 0, 0);
// no need to close here as perl GC will do the close()
uwsgi_pl_check_write_errors {
// noop
}
return UWSGI_OK;
}
SvREFCNT_dec(fn);
}
}
// check for path method
if (uwsgi_perl_obj_can(*hitem, "path", 4)) {
SV *p = uwsgi_perl_obj_call(*hitem, "path");
int fd = open(SvPV_nolen(p), O_RDONLY);
SvREFCNT_dec(p);
// the following function will close fd
uwsgi_response_sendfile_do(wsgi_req, fd, 0, 0);
uwsgi_pl_check_write_errors {
// noop
}
return UWSGI_OK;
}
for(;;) {
wsgi_req->switches++;
SV *chunk = uwsgi_perl_obj_call(*hitem, "getline");
if (!chunk) {
uwsgi_500(wsgi_req);
break;
}
chitem = SvPV( chunk, hlen);
if (hlen <= 0) {
SvREFCNT_dec(chunk);
if (uwsgi.async > 1 && wsgi_req->async_force_again) {
wsgi_req->async_placeholder = (SV *) *hitem;
return UWSGI_AGAIN;
}
break;
}
uwsgi_response_write_body_do(wsgi_req, chitem, hlen);
uwsgi_pl_check_write_errors {
SvREFCNT_dec(chunk);
break;
}
SvREFCNT_dec(chunk);
if (uwsgi.async > 1) {
wsgi_req->async_placeholder = (SV *) *hitem;
wsgi_req->async_force_again = 1;
return UWSGI_AGAIN;
}
}
SV *closed = uwsgi_perl_obj_call(*hitem, "close");
if (closed) {
SvREFCNT_dec(closed);
}
}
else if (SvTYPE(SvRV(*hitem)) == SVt_PVAV) {
body = (AV *) SvRV(*hitem);
for(i=0; i<=av_len(body); i++) {
hitem = av_fetch(body,i,0);
chitem = SvPV(*hitem, hlen);
uwsgi_response_write_body_do(wsgi_req, chitem, hlen);
uwsgi_pl_check_write_errors {
break;
}
}
}
else {
unsupported:
uwsgi_log("unsupported response body type: %d\n", SvTYPE(SvRV(*hitem)));
}
return UWSGI_OK;
}
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