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/*
* Copyright (c) 2016 DeNA Co., Ltd., Ichito Nagata
*
* 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 <inttypes.h>
#include "h2o.h"
struct st_h2o_http2_debug_state_handler_t {
h2o_handler_t super;
int hpack_enabled;
};
static int on_req(h2o_handler_t *_self, h2o_req_t *req)
{
struct st_h2o_http2_debug_state_handler_t *self = (void *)_self;
static h2o_generator_t generator = {NULL, NULL};
if (req->conn->callbacks->get_debug_state == NULL) {
return -1;
}
h2o_http2_debug_state_t *debug_state = req->conn->callbacks->get_debug_state(req, self->hpack_enabled);
// stringify these variables to embed in Debug Header
h2o_iovec_t conn_flow_in, conn_flow_out;
conn_flow_in.base = h2o_mem_alloc_pool(&req->pool, sizeof(H2O_INT64_LONGEST_STR));
conn_flow_in.len = sprintf(conn_flow_in.base, "%zd", debug_state->conn_flow_in);
conn_flow_out.base = h2o_mem_alloc_pool(&req->pool, sizeof(H2O_INT64_LONGEST_STR));
conn_flow_out.len = sprintf(conn_flow_out.base, "%zd", debug_state->conn_flow_out);
req->res.status = 200;
h2o_add_header(&req->pool, &req->res.headers, H2O_TOKEN_CONTENT_TYPE, NULL, H2O_STRLIT("application/json; charset=utf-8"));
h2o_add_header(&req->pool, &req->res.headers, H2O_TOKEN_CACHE_CONTROL, NULL, H2O_STRLIT("no-cache, no-store"));
h2o_add_header_by_str(&req->pool, &req->res.headers, H2O_STRLIT("conn-flow-in"), 0, NULL, conn_flow_in.base, conn_flow_in.len);
h2o_add_header_by_str(&req->pool, &req->res.headers, H2O_STRLIT("conn-flow-out"), 0, NULL, conn_flow_out.base,
conn_flow_out.len);
h2o_start_response(req, &generator);
h2o_send(req, debug_state->json.entries,
h2o_memis(req->input.method.base, req->input.method.len, H2O_STRLIT("HEAD")) ? 0 : debug_state->json.size,
H2O_SEND_STATE_FINAL);
return 0;
}
void h2o_http2_debug_state_register(h2o_hostconf_t *conf, int hpack_enabled)
{
h2o_pathconf_t *pathconf = h2o_config_register_path(conf, "/.well-known/h2/state", 0);
struct st_h2o_http2_debug_state_handler_t *self = (void *)h2o_create_handler(pathconf, sizeof(*self));
self->super.on_req = on_req;
self->hpack_enabled = hpack_enabled;
}
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