1 /* $NetBSD: evrpc-internal.h,v 1.1.1.1 2009/11/02 10:00:58 plunky Exp $ */ 2 /* 3 * Copyright (c) 2006 Niels Provos <provos@citi.umich.edu> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 #ifndef _EVRPC_INTERNAL_H_ 29 #define _EVRPC_INTERNAL_H_ 30 31 #include "http-internal.h" 32 33 struct evrpc; 34 35 #define EVRPC_URI_PREFIX "/.rpc." 36 37 struct evrpc_hook { 38 TAILQ_ENTRY(evrpc_hook) (next); 39 40 /* returns -1; if the rpc should be aborted, is allowed to rewrite */ 41 int (*process)(struct evhttp_request *, struct evbuffer *, void *); 42 void *process_arg; 43 }; 44 45 TAILQ_HEAD(evrpc_hook_list, evrpc_hook); 46 47 /* 48 * this is shared between the base and the pool, so that we can reuse 49 * the hook adding functions; we alias both evrpc_pool and evrpc_base 50 * to this common structure. 51 */ 52 struct _evrpc_hooks { 53 /* hooks for processing outbound and inbound rpcs */ 54 struct evrpc_hook_list in_hooks; 55 struct evrpc_hook_list out_hooks; 56 }; 57 58 #define input_hooks common.in_hooks 59 #define output_hooks common.out_hooks 60 61 struct evrpc_base { 62 struct _evrpc_hooks common; 63 64 /* the HTTP server under which we register our RPC calls */ 65 struct evhttp* http_server; 66 67 /* a list of all RPCs registered with us */ 68 TAILQ_HEAD(evrpc_list, evrpc) registered_rpcs; 69 }; 70 71 struct evrpc_req_generic; 72 void evrpc_reqstate_free(struct evrpc_req_generic* rpc_state); 73 74 /* A pool for holding evhttp_connection objects */ 75 struct evrpc_pool { 76 struct _evrpc_hooks common; 77 78 struct event_base *base; 79 80 struct evconq connections; 81 82 int timeout; 83 84 TAILQ_HEAD(evrpc_requestq, evrpc_request_wrapper) requests; 85 }; 86 87 88 #endif /* _EVRPC_INTERNAL_H_ */ 89