X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/7156b1ef48de59429a3d81d966ef151edc1c01ad..HEAD:/src/src/spf.c diff --git a/src/src/spf.c b/src/src/spf.c deleted file mode 100644 index ddbb938e4..000000000 --- a/src/src/spf.c +++ /dev/null @@ -1,138 +0,0 @@ -/* $Cambridge: exim/src/src/spf.c,v 1.9 2009/11/11 10:08:02 nm4 Exp $ */ - -/************************************************* -* Exim - an Internet mail transport agent * -*************************************************/ - -/* Experimental SPF support. - Copyright (c) Tom Kistner 2004 - License: GPL */ - -/* Code for calling spf checks via libspf-alt. Called from acl.c. */ - -#include "exim.h" -#ifdef EXPERIMENTAL_SPF - -/* must be kept in numeric order */ -static spf_result_id spf_result_id_list[] = { - { US"invalid", 0}, - { US"neutral", 1 }, - { US"pass", 2 }, - { US"fail", 3 }, - { US"softfail", 4 }, - { US"none", 5 }, - { US"err_temp", 6 }, - { US"err_perm", 7 } -}; - -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) */ - -int spf_init(uschar *spf_helo_domain, uschar *spf_remote_addr) { - - spf_server = SPF_server_new(SPF_DNS_CACHE, 0); - - if ( spf_server == NULL ) { - debug_printf("spf: SPF_server_new() failed.\n"); - return 0; - } - - if (SPF_server_set_rec_dom(spf_server, CS primary_hostname)) { - debug_printf("spf: SPF_server_set_rec_dom() failed.\n"); - spf_server = NULL; - return 0; - } - - spf_request = SPF_request_new(spf_server); - - if (SPF_request_set_ipv4_str(spf_request, CS spf_remote_addr)) { - debug_printf("spf: SPF_request_set_ipv4_str() failed.\n"); - spf_server = NULL; - spf_request = NULL; - return 0; - } - - if (SPF_request_set_helo_dom(spf_request, CS spf_helo_domain)) { - debug_printf("spf: SPF_set_helo_dom() failed.\n"); - spf_server = NULL; - spf_request = NULL; - return 0; - } - - return 1; -} - - -/* 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. */ - -int spf_process(uschar **listptr, uschar *spf_envelope_sender, int action) { - int sep = 0; - uschar *list = *listptr; - uschar *spf_result_id; - uschar spf_result_id_buffer[128]; - int rc = SPF_RESULT_PERMERROR; - - if (!(spf_server && spf_request)) { - /* no global context, assume temp error and skip to evaluation */ - rc = SPF_RESULT_PERMERROR; - goto SPF_EVALUATE; - }; - - 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; - goto SPF_EVALUATE; - } - - /* 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 = (uschar *)SPF_response_get_header_comment(spf_response); - spf_received = (uschar *)SPF_response_get_received_spf(spf_response); - spf_result = (uschar *)SPF_strresult(SPF_response_result(spf_response)); - spf_smtp_comment = (uschar *)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 */ - SPF_EVALUATE: - 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, - spf_result_id_buffer, - sizeof(spf_result_id_buffer))) != NULL) { - int negate = 0; - int result = 0; - - /* Check for negation */ - if (spf_result_id[0] == '!') { - negate = 1; - spf_result_id++; - }; - - /* Check the result identifier */ - result = Ustrcmp(spf_result_id, spf_result_id_list[rc].name); - if (!negate && result==0) return OK; - if (negate && result!=0) return OK; - }; - - /* no match */ - return FAIL; -} - -#endif