Commit | Line | Data |
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92f1b170 TK |
1 | /************************************************* |
2 | * Exim - an Internet mail transport agent * | |
3 | *************************************************/ | |
4 | ||
5 | /* | |
6 | * Exim - SPF lookup module using libspf2 | |
7 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
8 | * | |
9 | * Copyright (c) 2005 Chris Webb, Arachsys Internet Services Ltd | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License | |
13 | * as published by the Free Software Foundation; either version 2 | |
14 | * of the License, or (at your option) any later version. | |
15 | * | |
80fea873 | 16 | * Copyright (c) The Exim Maintainers 2016 |
92f1b170 TK |
17 | */ |
18 | ||
19 | #include "../exim.h" | |
20 | ||
7952eef9 | 21 | #ifndef SUPPORT_SPF |
e1d15f5e JH |
22 | static void dummy(int x); |
23 | static void dummy2(int x) { dummy(x-1); } | |
24 | static void dummy(int x) { dummy2(x-1); } | |
92f1b170 TK |
25 | #else |
26 | ||
27 | #include "lf_functions.h" | |
bda76da8 JH |
28 | #if !defined(HAVE_NS_TYPE) && defined(NS_INADDRSZ) |
29 | # define HAVE_NS_TYPE | |
56dda33c | 30 | #endif |
92f1b170 TK |
31 | #include <spf2/spf.h> |
32 | #include <spf2/spf_dns_resolv.h> | |
33 | #include <spf2/spf_dns_cache.h> | |
34 | ||
b8e97684 JH |
35 | extern SPF_dns_server_t * SPF_dns_exim_new(int); |
36 | ||
37 | ||
14b3c5bc JH |
38 | static void * |
39 | spf_open(uschar *filename, uschar **errmsg) | |
40 | { | |
b8e97684 JH |
41 | SPF_dns_server_t * dc; |
42 | SPF_server_t *spf_server = NULL; | |
43 | int debug = 0; | |
44 | ||
45 | DEBUG(D_lookup) debug = 1; | |
46 | ||
47 | if ((dc = SPF_dns_exim_new(debug))) | |
48 | if ((dc = SPF_dns_cache_new(dc, NULL, debug, 8))) | |
49 | spf_server = SPF_server_new_dns(dc, debug); | |
50 | ||
51 | if (!spf_server) | |
52 | { | |
53 | *errmsg = US"SPF_dns_exim_nnew() failed"; | |
54 | return NULL; | |
55 | } | |
56 | return (void *) spf_server; | |
92f1b170 TK |
57 | } |
58 | ||
b8e97684 | 59 | |
14b3c5bc JH |
60 | static void |
61 | spf_close(void *handle) | |
62 | { | |
de2e5b3d JH |
63 | SPF_server_t *spf_server = handle; |
64 | if (spf_server) SPF_server_free(spf_server); | |
92f1b170 TK |
65 | } |
66 | ||
14b3c5bc | 67 | static int |
eac732ad | 68 | spf_find(void *handle, uschar *filename, const uschar *keystring, int key_len, |
14b3c5bc JH |
69 | uschar **result, uschar **errmsg, uint *do_cache) |
70 | { | |
de2e5b3d JH |
71 | SPF_server_t *spf_server = handle; |
72 | SPF_request_t *spf_request; | |
73 | SPF_response_t *spf_response = NULL; | |
92f1b170 | 74 | |
de2e5b3d JH |
75 | if (!(spf_request = SPF_request_new(spf_server))) |
76 | { | |
77 | *errmsg = US"SPF_request_new() failed"; | |
78 | return FAIL; | |
92f1b170 TK |
79 | } |
80 | ||
de2e5b3d JH |
81 | #if HAVE_IPV6 |
82 | switch (string_is_ip_address(filename, NULL)) | |
30afa09e JH |
83 | #else |
84 | switch (4) | |
85 | #endif | |
de2e5b3d JH |
86 | { |
87 | case 4: | |
de2e5b3d JH |
88 | if (!SPF_request_set_ipv4_str(spf_request, CS filename)) |
89 | break; | |
90 | *errmsg = string_sprintf("invalid IPv4 address '%s'", filename); | |
92f1b170 | 91 | return FAIL; |
de2e5b3d JH |
92 | #if HAVE_IPV6 |
93 | ||
94 | case 6: | |
95 | if (!SPF_request_set_ipv6_str(spf_request, CS filename)) | |
96 | break; | |
97 | *errmsg = string_sprintf("invalid IPv6 address '%s'", filename); | |
98 | return FAIL; | |
99 | ||
100 | default: | |
101 | *errmsg = string_sprintf("invalid IP address '%s'", filename); | |
92f1b170 | 102 | return FAIL; |
de2e5b3d | 103 | #endif |
30afa09e | 104 | } |
de2e5b3d JH |
105 | |
106 | if (SPF_request_set_env_from(spf_request, CS keystring)) | |
107 | { | |
108 | *errmsg = string_sprintf("invalid envelope from address '%s'", keystring); | |
109 | return FAIL; | |
110 | } | |
92f1b170 | 111 | |
de2e5b3d JH |
112 | SPF_request_query_mailfrom(spf_request, &spf_response); |
113 | *result = string_copy(US SPF_strresult(SPF_response_result(spf_response))); | |
114 | SPF_response_free(spf_response); | |
115 | SPF_request_free(spf_request); | |
116 | return OK; | |
92f1b170 TK |
117 | } |
118 | ||
6545de78 PP |
119 | |
120 | /************************************************* | |
121 | * Version reporting entry point * | |
122 | *************************************************/ | |
123 | ||
124 | /* See local README for interface description. */ | |
125 | ||
126 | #include "../version.h" | |
127 | ||
128 | void | |
129 | spf_version_report(FILE *f) | |
130 | { | |
131 | #ifdef DYNLOOKUP | |
132 | fprintf(f, "Library version: SPF: Exim version %s\n", EXIM_VERSION_STR); | |
133 | #endif | |
134 | } | |
135 | ||
136 | ||
e6d225ae DW |
137 | static lookup_info _lookup_info = { |
138 | US"spf", /* lookup name */ | |
139 | 0, /* not absfile, not query style */ | |
140 | spf_open, /* open function */ | |
141 | NULL, /* no check function */ | |
142 | spf_find, /* find function */ | |
143 | spf_close, /* close function */ | |
144 | NULL, /* no tidy function */ | |
6545de78 PP |
145 | NULL, /* no quoting function */ |
146 | spf_version_report /* version reporting */ | |
e6d225ae DW |
147 | }; |
148 | ||
149 | #ifdef DYNLOOKUP | |
150 | #define spf_lookup_module_info _lookup_module_info | |
151 | #endif | |
152 | ||
153 | static lookup_info *_lookup_list[] = { &_lookup_info }; | |
154 | lookup_module_info spf_lookup_module_info = { LOOKUP_MODULE_INFO_MAGIC, _lookup_list, 1 }; | |
155 | ||
7952eef9 | 156 | #endif /* SUPPORT_SPF */ |