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Diffstat (limited to 'lib/lwres/include/lwres/context.h')
| -rw-r--r-- | lib/lwres/include/lwres/context.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/lib/lwres/include/lwres/context.h b/lib/lwres/include/lwres/context.h new file mode 100644 index 0000000..bf6402e --- /dev/null +++ b/lib/lwres/include/lwres/context.h @@ -0,0 +1,129 @@ +/* + * Copyright (C) 2004-2007 Internet Systems Consortium, Inc. ("ISC") + * Copyright (C) 2000, 2001 Internet Software Consortium. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH + * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, + * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM + * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE + * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + */ + +/* $Id: context.h,v 1.21 2007/06/19 23:47:23 tbox Exp $ */ + +#ifndef LWRES_CONTEXT_H +#define LWRES_CONTEXT_H 1 + +/*! \file lwres/context.h */ + +#include <stddef.h> + +#include <lwres/lang.h> +#include <lwres/int.h> +#include <lwres/result.h> + +/*! + * Used to set various options such as timeout, authentication, etc + */ +typedef struct lwres_context lwres_context_t; + +LWRES_LANG_BEGINDECLS + +typedef void *(*lwres_malloc_t)(void *arg, size_t length); +typedef void (*lwres_free_t)(void *arg, void *mem, size_t length); + +/* + * XXXMLG + * + * Make the server reload /etc/resolv.conf periodically. + * + * Make the server do sortlist/searchlist. + * + * Client side can disable the search/sortlist processing. + * + * Use an array of addresses/masks and searchlist for client-side, and + * if added to the client disable the processing on the server. + * + * Share /etc/resolv.conf data between contexts. + */ + +/*! + * _SERVERMODE + * Don't allocate and connect a socket to the server, since the + * caller _is_ a server. + */ +#define LWRES_CONTEXT_SERVERMODE 0x00000001U + +lwres_result_t +lwres_context_create(lwres_context_t **contextp, void *arg, + lwres_malloc_t malloc_function, + lwres_free_t free_function, + unsigned int flags); +/**< + * Allocate a lwres context. This is used in all lwres calls. + * + * Memory management can be replaced here by passing in two functions. + * If one is non-NULL, they must both be non-NULL. "arg" is passed to + * these functions. + * + * Contexts are not thread safe. Document at the top of the file. + * XXXMLG + * + * If they are NULL, the standard malloc() and free() will be used. + * + *\pre contextp != NULL && contextp == NULL. + * + *\return Returns 0 on success, non-zero on failure. + */ + +void +lwres_context_destroy(lwres_context_t **contextp); +/**< + * Frees all memory associated with a lwres context. + * + *\pre contextp != NULL && contextp == NULL. + */ + +lwres_uint32_t +lwres_context_nextserial(lwres_context_t *ctx); +/**< + * XXXMLG Document + */ + +void +lwres_context_initserial(lwres_context_t *ctx, lwres_uint32_t serial); + +void +lwres_context_freemem(lwres_context_t *ctx, void *mem, size_t len); + +void * +lwres_context_allocmem(lwres_context_t *ctx, size_t len); + +int +lwres_context_getsocket(lwres_context_t *ctx); + +lwres_result_t +lwres_context_send(lwres_context_t *ctx, + void *sendbase, int sendlen); + +lwres_result_t +lwres_context_recv(lwres_context_t *ctx, + void *recvbase, int recvlen, + int *recvd_len); + +lwres_result_t +lwres_context_sendrecv(lwres_context_t *ctx, + void *sendbase, int sendlen, + void *recvbase, int recvlen, + int *recvd_len); + +LWRES_LANG_ENDDECLS + +#endif /* LWRES_CONTEXT_H */ + |