SSL: made it possible to iterate though all certificates. A pointer to a previously configured certificate now stored in a certificate. This makes it possible to iterate though all certificates configured in the SSL context. This is now used to configure OCSP stapling for all certificates, and in ngx_ssl_session_id_context(). As SSL_CTX_use_certificate() frees previously loaded certificate of the same type, and we have no way to find out if it's the case, X509_free() calls are now posponed till ngx_ssl_cleanup_ctx(). Note that in OpenSSL 1.0.2+ this can be done without storing things in exdata using the SSL_CTX_set_current_cert() and SSL_CTX_get0_certificate() functions. These are not yet available in all supported versions though, so it's easier to continue to use exdata for now.

/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>


ngx_queue_t  ngx_posted_accept_events;
ngx_queue_t  ngx_posted_events;


void
ngx_event_process_posted(ngx_cycle_t *cycle, ngx_queue_t *posted)
{
    ngx_queue_t  *q;
    ngx_event_t  *ev;

    while (!ngx_queue_empty(posted)) {

        q = ngx_queue_head(posted);
        ev = ngx_queue_data(q, ngx_event_t, queue);

        ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
                      "posted event %p", ev);

        ngx_delete_posted_event(ev);

        ev->handler(ev);
    }
}