1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Exim - SPF lookup module using libspf2
6 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
8 Copyright (c) 2005 Chris Webb, Arachsys Internet Services Ltd
10 This program is free software; you can redistribute it and/or
11 modify it under the terms of the GNU General Public License
12 as published by the Free Software Foundation; either version 2
13 of the License, or (at your option) any later version.
15 Copyright (c) The Exim Maintainers 2020
21 static void dummy(int x
);
22 static void dummy2(int x
) { dummy(x
-1); }
23 static void dummy(int x
) { dummy2(x
-1); }
26 #include "lf_functions.h"
27 #if !defined(HAVE_NS_TYPE) && defined(NS_INADDRSZ)
31 #include <spf2/spf_dns_resolv.h>
32 #include <spf2/spf_dns_cache.h>
34 extern SPF_dns_server_t
* SPF_dns_exim_new(int);
38 spf_open(uschar
*filename
, uschar
**errmsg
)
40 SPF_dns_server_t
* dc
;
41 SPF_server_t
*spf_server
= NULL
;
44 DEBUG(D_lookup
) debug
= 1;
46 if ((dc
= SPF_dns_exim_new(debug
)))
47 if ((dc
= SPF_dns_cache_new(dc
, NULL
, debug
, 8)))
48 spf_server
= SPF_server_new_dns(dc
, debug
);
52 *errmsg
= US
"SPF_dns_exim_nnew() failed";
55 return (void *) spf_server
;
60 spf_close(void *handle
)
62 SPF_server_t
*spf_server
= handle
;
63 if (spf_server
) SPF_server_free(spf_server
);
67 spf_find(void *handle
, uschar
*filename
, const uschar
*keystring
, int key_len
,
68 uschar
**result
, uschar
**errmsg
, uint
*do_cache
)
70 SPF_server_t
*spf_server
= handle
;
71 SPF_request_t
*spf_request
;
72 SPF_response_t
*spf_response
= NULL
;
74 if (!(spf_request
= SPF_request_new(spf_server
)))
76 *errmsg
= US
"SPF_request_new() failed";
81 switch (string_is_ip_address(filename
, NULL
))
87 if (!SPF_request_set_ipv4_str(spf_request
, CS filename
))
89 *errmsg
= string_sprintf("invalid IPv4 address '%s'", filename
);
94 if (!SPF_request_set_ipv6_str(spf_request
, CS filename
))
96 *errmsg
= string_sprintf("invalid IPv6 address '%s'", filename
);
100 *errmsg
= string_sprintf("invalid IP address '%s'", filename
);
105 if (SPF_request_set_env_from(spf_request
, CS keystring
))
107 *errmsg
= string_sprintf("invalid envelope from address '%s'", keystring
);
111 SPF_request_query_mailfrom(spf_request
, &spf_response
);
112 *result
= string_copy(US
SPF_strresult(SPF_response_result(spf_response
)));
114 DEBUG(D_lookup
) spf_response_debug(spf_response
);
116 SPF_response_free(spf_response
);
117 SPF_request_free(spf_request
);
122 /*************************************************
123 * Version reporting entry point *
124 *************************************************/
126 /* See local README for interface description. */
128 #include "../version.h"
131 spf_version_report(FILE *f
)
134 fprintf(f
, "Library version: SPF: Exim version %s\n", EXIM_VERSION_STR
);
139 static lookup_info _lookup_info
= {
140 US
"spf", /* lookup name */
141 0, /* not absfile, not query style */
142 spf_open
, /* open function */
143 NULL
, /* no check function */
144 spf_find
, /* find function */
145 spf_close
, /* close function */
146 NULL
, /* no tidy function */
147 NULL
, /* no quoting function */
148 spf_version_report
/* version reporting */
152 #define spf_lookup_module_info _lookup_module_info
155 static lookup_info
*_lookup_list
[] = { &_lookup_info
};
156 lookup_module_info spf_lookup_module_info
= { LOOKUP_MODULE_INFO_MAGIC
, _lookup_list
, 1 };
158 #endif /* SUPPORT_SPF */