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/*************************************************
* Exim - an Internet mail transport agent *
*************************************************/
/*
* Exim - SPF lookup module using libspf2
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* Copyright (c) 2005 Chris Webb, Arachsys Internet Services Ltd
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* Copyright (c) The Exim Maintainers 2016
*/
#include "../exim.h"
#ifndef SUPPORT_SPF
static void dummy(int x);
static void dummy2(int x) { dummy(x-1); }
static void dummy(int x) { dummy2(x-1); }
#else
#include "lf_functions.h"
#ifndef HAVE_NS_TYPE
#define HAVE_NS_TYPE
#endif
#include <spf2/spf.h>
#include <spf2/spf_dns_resolv.h>
#include <spf2/spf_dns_cache.h>
static void *
spf_open(uschar *filename, uschar **errmsg)
{
SPF_server_t *spf_server = NULL;
spf_server = SPF_server_new(SPF_DNS_CACHE, 0);
if (spf_server == NULL) {
*errmsg = US"SPF_server_new() failed";
return NULL;
}
return (void *) spf_server;
}
static void
spf_close(void *handle)
{
SPF_server_t *spf_server = handle;
if (spf_server) SPF_server_free(spf_server);
}
static int
spf_find(void *handle, uschar *filename, const uschar *keystring, int key_len,
uschar **result, uschar **errmsg, uint *do_cache)
{
SPF_server_t *spf_server = handle;
SPF_request_t *spf_request = NULL;
SPF_response_t *spf_response = NULL;
spf_request = SPF_request_new(spf_server);
if (spf_request == NULL) {
*errmsg = US"SPF_request_new() failed";
return FAIL;
}
if (SPF_request_set_ipv4_str(spf_request, CS filename)) {
*errmsg = string_sprintf("invalid IP address '%s'", filename);
return FAIL;
}
if (SPF_request_set_env_from(spf_request, CS keystring)) {
*errmsg = string_sprintf("invalid envelope from address '%s'", keystring);
return FAIL;
}
SPF_request_query_mailfrom(spf_request, &spf_response);
*result = string_copy(US SPF_strresult(SPF_response_result(spf_response)));
SPF_response_free(spf_response);
SPF_request_free(spf_request);
return OK;
}
/*************************************************
* Version reporting entry point *
*************************************************/
/* See local README for interface description. */
#include "../version.h"
void
spf_version_report(FILE *f)
{
#ifdef DYNLOOKUP
fprintf(f, "Library version: SPF: Exim version %s\n", EXIM_VERSION_STR);
#endif
}
static lookup_info _lookup_info = {
US"spf", /* lookup name */
0, /* not absfile, not query style */
spf_open, /* open function */
NULL, /* no check function */
spf_find, /* find function */
spf_close, /* close function */
NULL, /* no tidy function */
NULL, /* no quoting function */
spf_version_report /* version reporting */
};
#ifdef DYNLOOKUP
#define spf_lookup_module_info _lookup_module_info
#endif
static lookup_info *_lookup_list[] = { &_lookup_info };
lookup_module_info spf_lookup_module_info = { LOOKUP_MODULE_INFO_MAGIC, _lookup_list, 1 };
#endif /* SUPPORT_SPF */
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