/*

 * Copyright (c) 2018 Fastly Inc, 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 "h2o.h"

#include <inttypes.h>

struct st_ssl_status_ctx_t {

    uint64_t alpn_h1;

    uint64_t alpn_h2;

    uint64_t handshake_full;

    uint64_t handshake_resume;

    uint64_t handshake_accum_time_full;

    uint64_t handshake_accum_time_resume;

    pthread_mutex_t mutex;

};

static void ssl_status_per_thread(void *_ssc, h2o_context_t *ctx)

{

    struct st_ssl_status_ctx_t *ssc = _ssc;

    pthread_mutex_lock(&ssc->mutex);

    ssc->alpn_h1 += ctx->ssl.alpn_h1;

    ssc->alpn_h2 += ctx->ssl.alpn_h2;

    ssc->handshake_full += ctx->ssl.handshake_full;

    ssc->handshake_resume += ctx->ssl.handshake_resume;

    ssc->handshake_accum_time_full += ctx->ssl.handshake_accum_time_full;

    ssc->handshake_accum_time_resume += ctx->ssl.handshake_accum_time_resume;

    pthread_mutex_unlock(&ssc->mutex);

}

static void *ssl_status_init(void)

{

    struct st_ssl_status_ctx_t *ssc = h2o_mem_alloc(sizeof(*ssc));

    *ssc = (struct st_ssl_status_ctx_t){0};

    pthread_mutex_init(&ssc->mutex, NULL);

    return ssc;

}

static h2o_iovec_t ssl_status_final(void *_ssc, h2o_globalconf_t *globalconf, h2o_req_t *req)

{

    struct st_ssl_status_ctx_t *ssc = _ssc;

    h2o_iovec_t buf;

#define BUFSIZE (1024)

    buf.base = h2o_mem_alloc_pool(&req->pool, char, BUFSIZE);

    buf.len = snprintf(buf.base, BUFSIZE,

                       ",\n"

                       " \"ssl.alpn.h1\": %" PRIu64 ",\n"

                       " \"ssl.alpn.h2\": %" PRIu64 ",\n"

                       " \"ssl.handshake.full\": %" PRIu64 ",\n"

                       " \"ssl.handshake.resume\": %" PRIu64 ",\n"

                       " \"ssl.handshake.accumulated-time.full\": %" PRIu64 ",\n"

                       " \"ssl.handshake.accumulated-time.resume\": %" PRIu64 "\n",

                       ssc->alpn_h1, ssc->alpn_h2, ssc->handshake_full, ssc->handshake_resume, ssc->handshake_accum_time_full,

                       ssc->handshake_accum_time_resume);

    pthread_mutex_destroy(&ssc->mutex);

    free(ssc);

    return buf;

#undef BUFSIZE

}

h2o_status_handler_t h2o_ssl_status_handler = {{H2O_STRLIT("ssl")}, ssl_status_final, ssl_status_init, ssl_status_per_thread};