2 * Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 2000, 2001 Internet Software Consortium.
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
18 /* $Id: context.h,v 1.14.206.1 2004/03/06 08:15:34 marka Exp $ */
20 #ifndef LWRES_CONTEXT_H
21 #define LWRES_CONTEXT_H 1
25 #include <lwres/lang.h>
26 #include <lwres/int.h>
27 #include <lwres/result.h>
30 * Used to set various options such as timeout, authentication, etc
32 typedef struct lwres_context lwres_context_t;
36 typedef void *(*lwres_malloc_t)(void *arg, size_t length);
37 typedef void (*lwres_free_t)(void *arg, void *mem, size_t length);
42 * Make the server reload /etc/resolv.conf periodically.
44 * Make the server do sortlist/searchlist.
46 * Client side can disable the search/sortlist processing.
48 * Use an array of addresses/masks and searchlist for client-side, and
49 * if added to the client disable the processing on the server.
51 * Share /etc/resolv.conf data between contexts.
56 * Don't allocate and connect a socket to the server, since the
57 * caller _is_ a server.
59 #define LWRES_CONTEXT_SERVERMODE 0x00000001U
62 lwres_context_create(lwres_context_t **contextp, void *arg,
63 lwres_malloc_t malloc_function,
64 lwres_free_t free_function,
67 * Allocate a lwres context. This is used in all lwres calls.
69 * Memory management can be replaced here by passing in two functions.
70 * If one is non-NULL, they must both be non-NULL. "arg" is passed to
73 * Contexts are not thread safe. Document at the top of the file.
76 * If they are NULL, the standard malloc() and free() will be used.
80 * contextp != NULL && contextp == NULL.
84 * Returns 0 on success, non-zero on failure.
88 lwres_context_destroy(lwres_context_t **contextp);
90 * Frees all memory associated with a lwres context.
94 * contextp != NULL && contextp == NULL.
98 lwres_context_nextserial(lwres_context_t *ctx);
104 lwres_context_initserial(lwres_context_t *ctx, lwres_uint32_t serial);
107 lwres_context_freemem(lwres_context_t *ctx, void *mem, size_t len);
110 lwres_context_allocmem(lwres_context_t *ctx, size_t len);
113 lwres_context_getsocket(lwres_context_t *ctx);
116 lwres_context_send(lwres_context_t *ctx,
117 void *sendbase, int sendlen);
120 lwres_context_recv(lwres_context_t *ctx,
121 void *recvbase, int recvlen,
125 lwres_context_sendrecv(lwres_context_t *ctx,
126 void *sendbase, int sendlen,
127 void *recvbase, int recvlen,
132 #endif /* LWRES_CONTEXT_H */