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/*
* Copyright (c) 2014,2015 DeNA Co., Ltd., Kazuho Oku, Daisuke Maki
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "h2o.h"
static void on_send(h2o_ostream_t *self, h2o_req_t *req, h2o_iovec_t *inbufs, size_t inbufcnt, h2o_send_state_t state)
{
/* nothing to do */
}
static void on_setup_ostream(h2o_filter_t *self, h2o_req_t *req, h2o_ostream_t **slot)
{
h2o_iovec_t dest, method;
ssize_t xru_index;
/* obtain x-reproxy-url header, or skip to next ostream */
if ((xru_index = h2o_find_header(&req->res.headers, H2O_TOKEN_X_REPROXY_URL, -1)) == -1) {
h2o_setup_next_ostream(req, slot);
return;
}
dest = req->res.headers.entries[xru_index].value;
h2o_delete_header(&req->res.headers, xru_index);
/* setup params */
switch (req->res.status) {
case 307:
case 308:
method = req->method;
break;
default:
method = h2o_iovec_init(H2O_STRLIT("GET"));
req->entity = (h2o_iovec_t){NULL};
break;
}
/* request internal redirect (is deferred) */
h2o_send_redirect_internal(req, method, dest.base, dest.len, 0);
/* setup filter (that swallows the response until the timeout gets fired) */
h2o_ostream_t *ostream = h2o_add_ostream(req, sizeof(*ostream), slot);
ostream->do_send = on_send;
}
void h2o_reproxy_register(h2o_pathconf_t *pathconf)
{
h2o_filter_t *self = h2o_create_filter(pathconf, sizeof(*self));
self->on_setup_ostream = on_setup_ostream;
}
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