+++ /dev/null
-/* -*-c-*-
- *
- * Background reverse name resolution
- *
- * (c) 1999 Straylight/Edgeware
- */
-
-/*----- Licensing notice --------------------------------------------------*
- *
- * This file is part of the mLib utilities library.
- *
- * mLib is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Library General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * mLib is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with mLib; if not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- */
-
-#ifndef MLIB_RES_H
-#define MLIB_RES_H
-
-#ifdef __cplusplus
- extern "C" {
-#endif
-
-/*----- Header files ------------------------------------------------------*/
-
-#include <sys/types.h>
-
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-
-#ifdef HAVE_ADNS
-# include <adns.h>
-#endif
-
-#ifndef MLIB_SEL_H
-# include "sel.h"
-#endif
-
-#ifndef MLIB_SELBUF_H
-# include "selbuf.h"
-#endif
-
-/*----- Data structures ---------------------------------------------------*/
-
-/* --- Client allocated request block --- */
-
-typedef struct bres_client {
-#ifdef HAVE_ADNS
- adns_query aq; /* ADNS query handle */
- adns_answer *a; /* Answer for reverse resolution */
- struct _unused *_pad1; /* And a spare slot */
-#else
- struct bres_client *next, *prev; /* Queue of waiting resolve jobs */
- struct bres_server *rs; /* Pointer to attached server */
-#endif
- int q; /* Query type (name or address) */
- union {
- struct in_addr addr; /* Address to resolve */
- char *name; /* Name to resolve */
- } u;
- void (*func)(struct hostent */*h*/, void */*p*/); /* Handler function */
- void *p; /* Argument for handler function */
-} bres_client;
-
-/* --- Server maintained resolver blocks --- */
-
-typedef struct bres_server {
- struct bres_server *next, *prev; /* Doubly-linked list of servers */
- pid_t kid; /* Process id of server process */
- int fd; /* File descriptors */
- struct bres_client *rc; /* Pointer to attached client */
- sel_timer t; /* Timeout for idle servers */
- sel_file f; /* Read selector for server */
-} bres_server;
-
-/*----- Functions provided ------------------------------------------------*/
-
-/* --- @bres_abort@ --- *
- *
- * Arguments: @bres_client *rc@ = pointer to client block
- *
- * Returns: ---
- *
- * Use: Removes a queued job.
- */
-
-extern void bres_abort(bres_client */*rc*/);
-
-/* --- @bres_byaddr@ --- *
- *
- * Arguments: @bres_client *rc@ = pointer to client block
- * @struct in_addr addr@ = address to resolve
- * @void (*func)(struct hostent *h, void *p)@ = handler function
- * @void *p@ = argument for handler function
- *
- * Returns: ---
- *
- * Use: Adds an address lookup job to the queue. The job will be
- * processed when there's a spare resolver process to deal with
- * it.
- */
-
-extern void bres_byaddr(bres_client */*rc*/, struct in_addr /*addr*/,
- void (*/*func*/)(struct hostent */*h*/, void */*p*/),
- void */*p*/);
-
-/* --- @bres_byname@ --- *
- *
- * Arguments: @bres_client *rc@ = pointer to client block
- * @const char *name@ = name to resolve
- * @void (*func)(struct hostent *h, void *p)@ = handler function
- * @void *p@ = argument for handler function
- *
- * Returns: ---
- *
- * Use: Adds a name lookup job to the queue. The job will be
- * processed when there's a spare resolver process to deal with
- * it.
- */
-
-extern void bres_byname(bres_client */*rc*/, const char */*name*/,
- void (*/*func*/)(struct hostent */*h*/, void */*p*/),
- void */*p*/);
-
-/* --- @bres_exec@ --- *
- *
- * Arguments: @const char *file@ = file containing server code or null
- *
- * Returns: ---
- *
- * Use: Makes `bres' use a standalone server rather than copies of
- * the current process. This can reduce memory consumption for
- * large processes, at the expense of startup time (which
- * shouldn't be too bad anyway, because of the resolver design).
- * If the filename is null, a default set up at install time is
- * used. It's probably a good idea to leave it alone.
- */
-
-extern void bres_exec(const char */*file*/);
-
-/* --- @bres_init@ --- *
- *
- * Arguments: @sel_state *s@ = pointer to select multiplexor
- *
- * Returns: ---
- *
- * Use: Initializes the background resolver for use.
- */
-
-extern void bres_init(sel_state */*s*/);
-
-/*----- That's all, folks -------------------------------------------------*/
-
-#ifdef __cplusplus
- }
-#endif
-
-#endif
~mdw / mLib / blobdiff