| 1 | /*
|
|---|
| 2 | * This program is free software; you can redistribute it and/or modify
|
|---|
| 3 | * it under the terms of either:
|
|---|
| 4 | *
|
|---|
| 5 | * a) The GNU Lesser General Public License as published by the Free
|
|---|
| 6 | * Software Foundation; either version 2.1, or (at your option) any
|
|---|
| 7 | * later version,
|
|---|
| 8 | *
|
|---|
| 9 | * OR
|
|---|
| 10 | *
|
|---|
| 11 | * b) The two-clause BSD license.
|
|---|
| 12 | *
|
|---|
| 13 | * These licenses can be found with the distribution in the file LICENSES
|
|---|
| 14 | */
|
|---|
| 15 |
|
|---|
| 16 | #include "spf_sys_config.h"
|
|---|
| 17 |
|
|---|
| 18 |
|
|---|
| 19 | #ifdef STDC_HEADERS
|
|---|
| 20 | # include <stdio.h> /* stdin / stdout */
|
|---|
| 21 | # include <stdlib.h> /* malloc / free */
|
|---|
| 22 | #endif
|
|---|
| 23 |
|
|---|
| 24 | #ifdef HAVE_STRING_H
|
|---|
| 25 | # include <string.h> /* strstr / strdup */
|
|---|
| 26 | #else
|
|---|
| 27 | # ifdef HAVE_STRINGS_H
|
|---|
| 28 | # include <strings.h> /* strstr / strdup */
|
|---|
| 29 | # endif
|
|---|
| 30 | #endif
|
|---|
| 31 |
|
|---|
| 32 |
|
|---|
| 33 |
|
|---|
| 34 | #include "spf.h"
|
|---|
| 35 | #include "spf_dns.h"
|
|---|
| 36 | #include "spf_internal.h"
|
|---|
| 37 | #include "spf_dns_internal.h"
|
|---|
| 38 | #include "spf_dns_null.h"
|
|---|
| 39 |
|
|---|
| 40 |
|
|---|
| 41 | static SPF_dns_rr_t *
|
|---|
| 42 | SPF_dns_null_lookup(SPF_dns_server_t *spf_dns_server,
|
|---|
| 43 | const char *domain, ns_type rr_type, int should_cache)
|
|---|
| 44 | {
|
|---|
| 45 | if (spf_dns_server->layer_below)
|
|---|
| 46 | return SPF_dns_lookup(spf_dns_server->layer_below,
|
|---|
| 47 | domain, rr_type, should_cache);
|
|---|
| 48 | return SPF_dns_rr_new_nxdomain(spf_dns_server, domain);
|
|---|
| 49 | }
|
|---|
| 50 |
|
|---|
| 51 | static void
|
|---|
| 52 | SPF_dns_null_free( SPF_dns_server_t *spf_dns_server )
|
|---|
| 53 | {
|
|---|
| 54 | SPF_ASSERT_NOTNULL(spf_dns_server);
|
|---|
| 55 | free(spf_dns_server);
|
|---|
| 56 | }
|
|---|
| 57 |
|
|---|
| 58 | SPF_dns_server_t *
|
|---|
| 59 | SPF_dns_null_new(SPF_dns_server_t *spf_dns_server_below,
|
|---|
| 60 | const char *name, int debug)
|
|---|
| 61 | {
|
|---|
| 62 | SPF_dns_server_t *spf_dns_server;
|
|---|
| 63 |
|
|---|
| 64 | spf_dns_server = malloc(sizeof(SPF_dns_server_t));
|
|---|
| 65 | if ( spf_dns_server == NULL )
|
|---|
| 66 | return NULL;
|
|---|
| 67 | memset(spf_dns_server, 0, sizeof(SPF_dns_server_t));
|
|---|
| 68 |
|
|---|
| 69 | if (name == NULL)
|
|---|
| 70 | name = "null";
|
|---|
| 71 |
|
|---|
| 72 | spf_dns_server->destroy = SPF_dns_null_free;
|
|---|
| 73 | spf_dns_server->lookup = SPF_dns_null_lookup;
|
|---|
| 74 | spf_dns_server->get_spf = NULL;
|
|---|
| 75 | spf_dns_server->get_exp = NULL;
|
|---|
| 76 | spf_dns_server->add_cache = NULL;
|
|---|
| 77 | spf_dns_server->layer_below = spf_dns_server_below;
|
|---|
| 78 | spf_dns_server->name = name;
|
|---|
| 79 | spf_dns_server->debug = debug;
|
|---|
| 80 |
|
|---|
| 81 | return spf_dns_server;
|
|---|
| 82 | }
|
|---|
