1 /* $Cambridge: exim/src/src/lookups/spf.c,v 1.3 2009/11/11 14:43:28 nm4 Exp $ */
3 /*************************************************
4 * Exim - an Internet mail transport agent *
5 *************************************************/
8 * Exim - SPF lookup module using libspf2
9 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
11 * Copyright (c) 2005 Chris Webb, Arachsys Internet Services Ltd
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version 2
16 * of the License, or (at your option) any later version.
22 #ifndef EXPERIMENTAL_SPF
23 static void dummy(int x) { dummy(x-1); }
26 #include "lf_functions.h"
31 #include <spf2/spf_dns_resolv.h>
32 #include <spf2/spf_dns_cache.h>
34 static void *spf_open(uschar *filename, uschar **errmsg) {
35 SPF_server_t *spf_server = NULL;
36 spf_server = SPF_server_new(SPF_DNS_CACHE, 0);
37 if (spf_server == NULL) {
38 *errmsg = US"SPF_server_new() failed";
41 return (void *) spf_server;
44 static void spf_close(void *handle) {
45 SPF_server_t *spf_server = handle;
46 if (spf_server) SPF_server_free(spf_server);
49 static int spf_find(void *handle, uschar *filename, uschar *keystring, int key_len,
50 uschar **result, uschar **errmsg, BOOL *do_cache) {
51 SPF_server_t *spf_server = handle;
52 SPF_request_t *spf_request = NULL;
53 SPF_response_t *spf_response = NULL;
55 spf_request = SPF_request_new(spf_server);
56 if (spf_request == NULL) {
57 *errmsg = US"SPF_request_new() failed";
61 if (SPF_request_set_ipv4_str(spf_request, CS filename)) {
62 *errmsg = string_sprintf("invalid IP address '%s'", filename);
65 if (SPF_request_set_env_from(spf_request, CS keystring)) {
66 *errmsg = string_sprintf("invalid envelope from address '%s'", keystring);
70 SPF_request_query_mailfrom(spf_request, &spf_response);
71 *result = string_copy(US SPF_strresult(SPF_response_result(spf_response)));
72 SPF_response_free(spf_response);
73 SPF_request_free(spf_request);
78 /*************************************************
79 * Version reporting entry point *
80 *************************************************/
82 /* See local README for interface description. */
84 #include "../version.h"
87 spf_version_report(FILE *f)
90 fprintf(f, "Library version: SPF: Exim version %s\n", EXIM_VERSION_STR);
95 static lookup_info _lookup_info = {
96 US"spf", /* lookup name */
97 0, /* not absfile, not query style */
98 spf_open, /* open function */
99 NULL, /* no check function */
100 spf_find, /* find function */
101 spf_close, /* close function */
102 NULL, /* no tidy function */
103 NULL, /* no quoting function */
104 spf_version_report /* version reporting */
108 #define spf_lookup_module_info _lookup_module_info
111 static lookup_info *_lookup_list[] = { &_lookup_info };
112 lookup_module_info spf_lookup_module_info = { LOOKUP_MODULE_INFO_MAGIC, _lookup_list, 1 };
114 #endif /* EXPERIMENTAL_SPF */