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ab75a2db | 1 | /* $Cambridge: exim/src/src/lookups/spf.c,v 1.3 2009/11/11 14:43:28 nm4 Exp $ */ |
92f1b170 TK |
2 | |
3 | /************************************************* | |
4 | * Exim - an Internet mail transport agent * | |
5 | *************************************************/ | |
6 | ||
7 | /* | |
8 | * Exim - SPF lookup module using libspf2 | |
9 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
10 | * | |
11 | * Copyright (c) 2005 Chris Webb, Arachsys Internet Services Ltd | |
12 | * | |
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. | |
17 | * | |
18 | */ | |
19 | ||
20 | #include "../exim.h" | |
21 | ||
22 | #ifndef EXPERIMENTAL_SPF | |
23 | static void dummy(int x) { dummy(x-1); } | |
24 | #else | |
25 | ||
26 | #include "lf_functions.h" | |
56dda33c TK |
27 | #ifndef HAVE_NS_TYPE |
28 | #define HAVE_NS_TYPE | |
29 | #endif | |
92f1b170 TK |
30 | #include <spf2/spf.h> |
31 | #include <spf2/spf_dns_resolv.h> | |
32 | #include <spf2/spf_dns_cache.h> | |
33 | ||
e6d225ae | 34 | static void *spf_open(uschar *filename, uschar **errmsg) { |
92f1b170 TK |
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"; | |
39 | return NULL; | |
40 | } | |
41 | return (void *) spf_server; | |
42 | } | |
43 | ||
e6d225ae | 44 | static void spf_close(void *handle) { |
92f1b170 TK |
45 | SPF_server_t *spf_server = handle; |
46 | if (spf_server) SPF_server_free(spf_server); | |
47 | } | |
48 | ||
e6d225ae | 49 | static int spf_find(void *handle, uschar *filename, uschar *keystring, int key_len, |
92f1b170 TK |
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; | |
54 | ||
55 | spf_request = SPF_request_new(spf_server); | |
56 | if (spf_request == NULL) { | |
57 | *errmsg = US"SPF_request_new() failed"; | |
58 | return FAIL; | |
59 | } | |
60 | ||
ab75a2db | 61 | if (SPF_request_set_ipv4_str(spf_request, CS filename)) { |
92f1b170 TK |
62 | *errmsg = string_sprintf("invalid IP address '%s'", filename); |
63 | return FAIL; | |
64 | } | |
ab75a2db | 65 | if (SPF_request_set_env_from(spf_request, CS keystring)) { |
92f1b170 TK |
66 | *errmsg = string_sprintf("invalid envelope from address '%s'", keystring); |
67 | return FAIL; | |
68 | } | |
69 | ||
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); | |
74 | return OK; | |
75 | } | |
76 | ||
e6d225ae DW |
77 | static lookup_info _lookup_info = { |
78 | US"spf", /* lookup name */ | |
79 | 0, /* not absfile, not query style */ | |
80 | spf_open, /* open function */ | |
81 | NULL, /* no check function */ | |
82 | spf_find, /* find function */ | |
83 | spf_close, /* close function */ | |
84 | NULL, /* no tidy function */ | |
85 | NULL /* no quoting function */ | |
86 | }; | |
87 | ||
88 | #ifdef DYNLOOKUP | |
89 | #define spf_lookup_module_info _lookup_module_info | |
90 | #endif | |
91 | ||
92 | static lookup_info *_lookup_list[] = { &_lookup_info }; | |
93 | lookup_module_info spf_lookup_module_info = { LOOKUP_MODULE_INFO_MAGIC, _lookup_list, 1 }; | |
94 | ||
92f1b170 | 95 | #endif /* EXPERIMENTAL_SPF */ |