+++ /dev/null
-/*
- * Copyright (c) 2006-2007 Niels Provos <provos@citi.umich.edu>
- * Copyright (c) 2007-2010 Niels Provos and Nick Mathewson
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#ifndef _EVRPC_INTERNAL_H_
-#define _EVRPC_INTERNAL_H_
-
-#include "http-internal.h"
-
-struct evrpc;
-struct evrpc_request_wrapper;
-
-#define EVRPC_URI_PREFIX "/.rpc."
-
-struct evrpc_hook {
- TAILQ_ENTRY(evrpc_hook) next;
-
- /* returns EVRPC_TERMINATE; if the rpc should be aborted.
- * a hook is is allowed to rewrite the evbuffer
- */
- int (*process)(void *, struct evhttp_request *,
- struct evbuffer *, void *);
- void *process_arg;
-};
-
-TAILQ_HEAD(evrpc_hook_list, evrpc_hook);
-
-/*
- * this is shared between the base and the pool, so that we can reuse
- * the hook adding functions; we alias both evrpc_pool and evrpc_base
- * to this common structure.
- */
-
-struct evrpc_hook_ctx;
-TAILQ_HEAD(evrpc_pause_list, evrpc_hook_ctx);
-
-struct _evrpc_hooks {
- /* hooks for processing outbound and inbound rpcs */
- struct evrpc_hook_list in_hooks;
- struct evrpc_hook_list out_hooks;
-
- struct evrpc_pause_list pause_requests;
-};
-
-#define input_hooks common.in_hooks
-#define output_hooks common.out_hooks
-#define paused_requests common.pause_requests
-
-struct evrpc_base {
- struct _evrpc_hooks common;
-
- /* the HTTP server under which we register our RPC calls */
- struct evhttp* http_server;
-
- /* a list of all RPCs registered with us */
- TAILQ_HEAD(evrpc_list, evrpc) registered_rpcs;
-};
-
-struct evrpc_req_generic;
-void evrpc_reqstate_free(struct evrpc_req_generic* rpc_state);
-
-/* A pool for holding evhttp_connection objects */
-struct evrpc_pool {
- struct _evrpc_hooks common;
-
- struct event_base *base;
-
- struct evconq connections;
-
- int timeout;
-
- TAILQ_HEAD(evrpc_requestq, evrpc_request_wrapper) (requests);
-};
-
-struct evrpc_hook_ctx {
- TAILQ_ENTRY(evrpc_hook_ctx) next;
-
- void *ctx;
- void (*cb)(void *, enum EVRPC_HOOK_RESULT);
-};
-
-struct evrpc_meta {
- TAILQ_ENTRY(evrpc_meta) next;
- char *key;
-
- void *data;
- size_t data_size;
-};
-
-TAILQ_HEAD(evrpc_meta_list, evrpc_meta);
-
-struct evrpc_hook_meta {
- struct evrpc_meta_list meta_data;
- struct evhttp_connection *evcon;
-};
-
-/* allows association of meta data with a request */
-static void evrpc_hook_associate_meta(struct evrpc_hook_meta **pctx,
- struct evhttp_connection *evcon);
-
-/* creates a new meta data store */
-static struct evrpc_hook_meta *evrpc_hook_meta_new(void);
-
-/* frees the meta data associated with a request */
-static void evrpc_hook_context_free(struct evrpc_hook_meta *ctx);
-
-/* the server side of an rpc */
-
-/* We alias the RPC specific structs to this voided one */
-struct evrpc_req_generic {
- /*
- * allows association of meta data via hooks - needs to be
- * synchronized with evrpc_request_wrapper
- */
- struct evrpc_hook_meta *hook_meta;
-
- /* the unmarshaled request object */
- void *request;
-
- /* the empty reply object that needs to be filled in */
- void *reply;
-
- /*
- * the static structure for this rpc; that can be used to
- * automatically unmarshal and marshal the http buffers.
- */
- struct evrpc *rpc;
-
- /*
- * the http request structure on which we need to answer.
- */
- struct evhttp_request* http_req;
-
- /*
- * Temporary data store for marshaled data
- */
- struct evbuffer* rpc_data;
-};
-
-/* the client side of an rpc request */
-struct evrpc_request_wrapper {
- /*
- * allows association of meta data via hooks - needs to be
- * synchronized with evrpc_req_generic.
- */
- struct evrpc_hook_meta *hook_meta;
-
- TAILQ_ENTRY(evrpc_request_wrapper) next;
-
- /* pool on which this rpc request is being made */
- struct evrpc_pool *pool;
-
- /* connection on which the request is being sent */
- struct evhttp_connection *evcon;
-
- /* the actual request */
- struct evhttp_request *req;
-
- /* event for implementing request timeouts */
- struct event ev_timeout;
-
- /* the name of the rpc */
- char *name;
-
- /* callback */
- void (*cb)(struct evrpc_status*, void *request, void *reply, void *arg);
- void *cb_arg;
-
- void *request;
- void *reply;
-
- /* unmarshals the buffer into the proper request structure */
- void (*request_marshal)(struct evbuffer *, void *);
-
- /* removes all stored state in the reply */
- void (*reply_clear)(void *);
-
- /* marshals the reply into a buffer */
- int (*reply_unmarshal)(void *, struct evbuffer*);
-};
-
-#endif /* _EVRPC_INTERNAL_H_ */
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