X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/f9ba5e2255cf18092750fffacb6a9603571a2be5..HEAD:/src/src/spf.c diff --git a/src/src/spf.c b/src/src/spf.c deleted file mode 100644 index 9fdc0baec..000000000 --- a/src/src/spf.c +++ /dev/null @@ -1,149 +0,0 @@ -/************************************************* -* Exim - an Internet mail transport agent * -*************************************************/ - -/* Experimental SPF support. - Copyright (c) Tom Kistner 2004 - 2014 - License: GPL - Copyright (c) The Exim Maintainers 2015 - 2018 -*/ - -/* Code for calling spf checks via libspf-alt. Called from acl.c. */ - -#include "exim.h" -#ifdef SUPPORT_SPF - -/* must be kept in numeric order */ -static spf_result_id spf_result_id_list[] = { - /* name value */ - { US"invalid", 0}, - { US"neutral", 1 }, - { US"pass", 2 }, - { US"fail", 3 }, - { US"softfail", 4 }, - { US"none", 5 }, - { US"err_temp", 6 }, /* Deprecated Apr 2014 */ - { US"err_perm", 7 }, /* Deprecated Apr 2014 */ - { US"temperror", 6 }, /* RFC 4408 defined */ - { US"permerror", 7 } /* RFC 4408 defined */ -}; - -SPF_server_t *spf_server = NULL; -SPF_request_t *spf_request = NULL; -SPF_response_t *spf_response = NULL; -SPF_response_t *spf_response_2mx = NULL; - - -/* spf_init sets up a context that can be re-used for several - messages on the same SMTP connection (that come from the - same host with the same HELO string) - -Return: Boolean success */ - -BOOL -spf_init(uschar *spf_helo_domain, uschar *spf_remote_addr) -{ -spf_server = SPF_server_new(SPF_DNS_CACHE, 0); - -if (!spf_server) - { - DEBUG(D_receive) debug_printf("spf: SPF_server_new() failed.\n"); - return FALSE; - } - -if (SPF_server_set_rec_dom(spf_server, CS primary_hostname)) - { - DEBUG(D_receive) debug_printf("spf: SPF_server_set_rec_dom(\"%s\") failed.\n", - primary_hostname); - spf_server = NULL; - return FALSE; - } - -spf_request = SPF_request_new(spf_server); - -if ( SPF_request_set_ipv4_str(spf_request, CS spf_remote_addr) - && SPF_request_set_ipv6_str(spf_request, CS spf_remote_addr) - ) - { - DEBUG(D_receive) - debug_printf("spf: SPF_request_set_ipv4_str() and " - "SPF_request_set_ipv6_str() failed [%s]\n", spf_remote_addr); - spf_server = NULL; - spf_request = NULL; - return FALSE; - } - -if (SPF_request_set_helo_dom(spf_request, CS spf_helo_domain)) - { - DEBUG(D_receive) debug_printf("spf: SPF_set_helo_dom(\"%s\") failed.\n", - spf_helo_domain); - spf_server = NULL; - spf_request = NULL; - return FALSE; - } - -return TRUE; -} - - -/* spf_process adds the envelope sender address to the existing - context (if any), retrieves the result, sets up expansion - strings and evaluates the condition outcome. - -Return: OK/FAIL */ - -int -spf_process(const uschar **listptr, uschar *spf_envelope_sender, int action) -{ -int sep = 0; -const uschar *list = *listptr; -uschar *spf_result_id; -int rc = SPF_RESULT_PERMERROR; - -if (!(spf_server && spf_request)) - /* no global context, assume temp error and skip to evaluation */ - rc = SPF_RESULT_PERMERROR; - -else if (SPF_request_set_env_from(spf_request, CS spf_envelope_sender)) - /* Invalid sender address. This should be a real rare occurence */ - rc = SPF_RESULT_PERMERROR; - -else - { - /* get SPF result */ - if (action == SPF_PROCESS_FALLBACK) - SPF_request_query_fallback(spf_request, &spf_response, CS spf_guess); - else - SPF_request_query_mailfrom(spf_request, &spf_response); - - /* set up expansion items */ - spf_header_comment = US SPF_response_get_header_comment(spf_response); - spf_received = US SPF_response_get_received_spf(spf_response); - spf_result = US SPF_strresult(SPF_response_result(spf_response)); - spf_smtp_comment = US SPF_response_get_smtp_comment(spf_response); - - rc = SPF_response_result(spf_response); - } - -/* We got a result. Now see if we should return OK or FAIL for it */ -DEBUG(D_acl) debug_printf("SPF result is %s (%d)\n", SPF_strresult(rc), rc); - -if (action == SPF_PROCESS_GUESS && (!strcmp (SPF_strresult(rc), "none"))) - return spf_process(listptr, spf_envelope_sender, SPF_PROCESS_FALLBACK); - -while ((spf_result_id = string_nextinlist(&list, &sep, NULL, 0))) - { - BOOL negate, result; - - if ((negate = spf_result_id[0] == '!')) - spf_result_id++; - - result = Ustrcmp(spf_result_id, spf_result_id_list[rc].name) == 0; - if (negate != result) return OK; - } - -/* no match */ -return FAIL; -} - -#endif