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      1 /*	$NetBSD: keyvalq_struct.h,v 1.5 2020/05/25 20:47:34 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2000-2007 Niels Provos <provos (at) citi.umich.edu>
      5  * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 #ifndef EVENT2_KEYVALQ_STRUCT_H_INCLUDED_
     30 #define EVENT2_KEYVALQ_STRUCT_H_INCLUDED_
     31 
     32 #ifdef __cplusplus
     33 extern "C" {
     34 #endif
     35 
     36 /* Fix so that people don't have to run with <sys/queue.h> */
     37 /* XXXX This code is duplicated with event_struct.h */
     38 #ifndef TAILQ_ENTRY
     39 #define EVENT_DEFINED_TQENTRY_
     40 #define TAILQ_ENTRY(type)						\
     41 struct {								\
     42 	struct type *tqe_next;	/* next element */			\
     43 	struct type **tqe_prev;	/* address of previous next element */	\
     44 }
     45 #endif /* !TAILQ_ENTRY */
     46 
     47 #ifndef TAILQ_HEAD
     48 #define EVENT_DEFINED_TQHEAD_
     49 #define TAILQ_HEAD(name, type)			\
     50 struct name {					\
     51 	struct type *tqh_first;			\
     52 	struct type **tqh_last;			\
     53 }
     54 #endif
     55 
     56 /*
     57  * Key-Value pairs.  Can be used for HTTP headers but also for
     58  * query argument parsing.
     59  */
     60 struct evkeyval {
     61 	TAILQ_ENTRY(evkeyval) next;
     62 
     63 	char *key;
     64 	char *value;
     65 };
     66 
     67 TAILQ_HEAD (evkeyvalq, evkeyval);
     68 
     69 /* XXXX This code is duplicated with event_struct.h */
     70 #ifdef EVENT_DEFINED_TQENTRY_
     71 #undef TAILQ_ENTRY
     72 #endif
     73 
     74 #ifdef EVENT_DEFINED_TQHEAD_
     75 #undef TAILQ_HEAD
     76 #endif
     77 
     78 #ifdef __cplusplus
     79 }
     80 #endif
     81 
     82 #endif
     83