X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/8e61d2807317ed66163a395c1cd8666fd442d9aa..HEAD:/src/src/dmarc.c diff --git a/src/src/dmarc.c b/src/src/dmarc.c deleted file mode 100644 index 599ecc454..000000000 --- a/src/src/dmarc.c +++ /dev/null @@ -1,657 +0,0 @@ -/************************************************* -* Exim - an Internet mail transport agent * -*************************************************/ -/* DMARC support. - Copyright (c) Todd Lyons 2012 - 2014 - Copyright (c) The Exim Maintainers 2019 - License: GPL */ - -/* Portions Copyright (c) 2012, 2013, The Trusted Domain Project; - All rights reserved, licensed for use per LICENSE.opendmarc. */ - -/* Code for calling dmarc checks via libopendmarc. Called from acl.c. */ - -#include "exim.h" -#ifdef SUPPORT_DMARC -# if !defined SUPPORT_SPF -# error SPF must also be enabled for DMARC -# elif defined DISABLE_DKIM -# error DKIM must also be enabled for DMARC -# else - -# include "functions.h" -# include "dmarc.h" -# include "pdkim/pdkim.h" - -OPENDMARC_LIB_T dmarc_ctx; -DMARC_POLICY_T *dmarc_pctx = NULL; -OPENDMARC_STATUS_T libdm_status, action, dmarc_policy; -OPENDMARC_STATUS_T da, sa, action; -BOOL dmarc_abort = FALSE; -uschar *dmarc_pass_fail = US"skipped"; -header_line *from_header = NULL; -extern SPF_response_t *spf_response; -int dmarc_spf_ares_result = 0; -uschar *spf_sender_domain = NULL; -uschar *spf_human_readable = NULL; -u_char *header_from_sender = NULL; -int history_file_status = DMARC_HIST_OK; -uschar *dkim_history_buffer= NULL; - -typedef struct dmarc_exim_p { - uschar *name; - int value; -} dmarc_exim_p; - -static dmarc_exim_p dmarc_policy_description[] = { - /* name value */ - { US"", DMARC_RECORD_P_UNSPECIFIED }, - { US"none", DMARC_RECORD_P_NONE }, - { US"quarantine", DMARC_RECORD_P_QUARANTINE }, - { US"reject", DMARC_RECORD_P_REJECT }, - { NULL, 0 } -}; - - -void -dmarc_version_report(FILE *f) -{ -const char *implementation, *version; - -fprintf(f, "Library version: dmarc: Compile: %d.%d.%d.%d\n", - (OPENDMARC_LIB_VERSION & 0xff000000) >> 24, (OPENDMARC_LIB_VERSION & 0x00ff0000) >> 16, - (OPENDMARC_LIB_VERSION & 0x0000ff00) >> 8, OPENDMARC_LIB_VERSION & 0x000000ff); -} - - -/* Accept an error_block struct, initialize if empty, parse to the -end, and append the two strings passed to it. Used for adding -variable amounts of value:pair data to the forensic emails. */ - -static error_block * -add_to_eblock(error_block *eblock, uschar *t1, uschar *t2) -{ -error_block *eb = store_malloc(sizeof(error_block)); -if (!eblock) - eblock = eb; -else - { - /* Find the end of the eblock struct and point it at eb */ - error_block *tmp = eblock; - while(tmp->next) - tmp = tmp->next; - tmp->next = eb; - } -eb->text1 = t1; -eb->text2 = t2; -eb->next = NULL; -return eblock; -} - -/* dmarc_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 -dmarc_init() -{ -int *netmask = NULL; /* Ignored */ -int is_ipv6 = 0; - -/* Set some sane defaults. Also clears previous results when - * multiple messages in one connection. */ -dmarc_pctx = NULL; -dmarc_status = US"none"; -dmarc_abort = FALSE; -dmarc_pass_fail = US"skipped"; -dmarc_used_domain = US""; -f.dmarc_has_been_checked = FALSE; -header_from_sender = NULL; -spf_sender_domain = NULL; -spf_human_readable = NULL; - -/* ACLs have "control=dmarc_disable_verify" */ -if (f.dmarc_disable_verify == TRUE) - return OK; - -(void) memset(&dmarc_ctx, '\0', sizeof dmarc_ctx); -dmarc_ctx.nscount = 0; -libdm_status = opendmarc_policy_library_init(&dmarc_ctx); -if (libdm_status != DMARC_PARSE_OKAY) - { - log_write(0, LOG_MAIN|LOG_PANIC, "DMARC failure to init library: %s", - opendmarc_policy_status_to_str(libdm_status)); - dmarc_abort = TRUE; - } -if (!dmarc_tld_file || !*dmarc_tld_file) - { - DEBUG(D_receive) debug_printf("DMARC: no dmarc_tld_file\n"); - dmarc_abort = TRUE; - } -else if (opendmarc_tld_read_file(CS dmarc_tld_file, NULL, NULL, NULL)) - { - log_write(0, LOG_MAIN|LOG_PANIC, "DMARC failure to load tld list '%s': %s", - dmarc_tld_file, strerror(errno)); - dmarc_abort = TRUE; - } -if (!sender_host_address) - { - DEBUG(D_receive) debug_printf("DMARC: no sender_host_address\n"); - dmarc_abort = TRUE; - } -/* This catches locally originated email and startup errors above. */ -if (!dmarc_abort) - { - is_ipv6 = string_is_ip_address(sender_host_address, netmask) == 6; - if (!(dmarc_pctx = opendmarc_policy_connect_init(sender_host_address, is_ipv6))) - { - log_write(0, LOG_MAIN|LOG_PANIC, - "DMARC failure creating policy context: ip=%s", sender_host_address); - dmarc_abort = TRUE; - } - } - -return OK; -} - - -/* dmarc_store_data stores the header data so that subsequent -dmarc_process can access the data */ - -int -dmarc_store_data(header_line *hdr) -{ -/* No debug output because would change every test debug output */ -if (!f.dmarc_disable_verify) - from_header = hdr; -return OK; -} - - -static void -dmarc_send_forensic_report(u_char **ruf) -{ -uschar *recipient, *save_sender; -BOOL send_status = FALSE; -error_block *eblock = NULL; -FILE *message_file = NULL; - -/* Earlier ACL does not have *required* control=dmarc_enable_forensic */ -if (!f.dmarc_enable_forensic) - return; - -if ( dmarc_policy == DMARC_POLICY_REJECT && action == DMARC_RESULT_REJECT - || dmarc_policy == DMARC_POLICY_QUARANTINE && action == DMARC_RESULT_QUARANTINE - || dmarc_policy == DMARC_POLICY_NONE && action == DMARC_RESULT_REJECT - || dmarc_policy == DMARC_POLICY_NONE && action == DMARC_RESULT_QUARANTINE - ) - if (ruf) - { - eblock = add_to_eblock(eblock, US"Sender Domain", dmarc_used_domain); - eblock = add_to_eblock(eblock, US"Sender IP Address", sender_host_address); - eblock = add_to_eblock(eblock, US"Received Date", tod_stamp(tod_full)); - eblock = add_to_eblock(eblock, US"SPF Alignment", - sa == DMARC_POLICY_SPF_ALIGNMENT_PASS ? US"yes" : US"no"); - eblock = add_to_eblock(eblock, US"DKIM Alignment", - da == DMARC_POLICY_DKIM_ALIGNMENT_PASS ? US"yes" : US"no"); - eblock = add_to_eblock(eblock, US"DMARC Results", dmarc_status_text); - - for (int c = 0; ruf[c]; c++) - { - recipient = string_copylc(ruf[c]); - if (Ustrncmp(recipient, "mailto:",7)) - continue; - /* Move to first character past the colon */ - recipient += 7; - DEBUG(D_receive) - debug_printf("DMARC forensic report to %s%s\n", recipient, - (host_checking || f.running_in_test_harness) ? " (not really)" : ""); - if (host_checking || f.running_in_test_harness) - continue; - - if (!moan_send_message(recipient, ERRMESS_DMARC_FORENSIC, eblock, - header_list, message_file, NULL)) - log_write(0, LOG_MAIN|LOG_PANIC, - "failure to send DMARC forensic report to %s", recipient); - } - } -} - - -/* Look up a DNS dmarc record for the given domain. Return it or NULL */ - -static uschar * -dmarc_dns_lookup(uschar * dom) -{ -dns_answer * dnsa = store_get_dns_answer(); -dns_scan dnss; -int rc = dns_lookup(dnsa, string_sprintf("_dmarc.%s", dom), T_TXT, NULL); - -if (rc == DNS_SUCCEED) - for (dns_record * rr = dns_next_rr(dnsa, &dnss, RESET_ANSWERS); rr; - rr = dns_next_rr(dnsa, &dnss, RESET_NEXT)) - if (rr->type == T_TXT && rr->size > 3) - { - store_free_dns_answer(dnsa); - return string_copyn_taint(US rr->data, rr->size, TRUE); - } -store_free_dns_answer(dnsa); -return NULL; -} - - -static int -dmarc_write_history_file() -{ -int history_file_fd; -ssize_t written_len; -int tmp_ans; -u_char **rua; /* aggregate report addressees */ -uschar *history_buffer = NULL; - -if (!dmarc_history_file) - { - DEBUG(D_receive) debug_printf("DMARC history file not set\n"); - return DMARC_HIST_DISABLED; - } -history_file_fd = log_create(dmarc_history_file); - -if (history_file_fd < 0) - { - log_write(0, LOG_MAIN|LOG_PANIC, "failure to create DMARC history file: %s", - dmarc_history_file); - return DMARC_HIST_FILE_ERR; - } - -/* Generate the contents of the history file */ -history_buffer = string_sprintf( - "job %s\nreporter %s\nreceived %ld\nipaddr %s\nfrom %s\nmfrom %s\n", - message_id, primary_hostname, time(NULL), sender_host_address, - header_from_sender, expand_string(US"$sender_address_domain")); - -if (spf_response) - history_buffer = string_sprintf("%sspf %d\n", history_buffer, dmarc_spf_ares_result); - /* history_buffer = string_sprintf("%sspf -1\n", history_buffer); */ - -history_buffer = string_sprintf( - "%s%spdomain %s\npolicy %d\n", - history_buffer, dkim_history_buffer, dmarc_used_domain, dmarc_policy); - -if ((rua = opendmarc_policy_fetch_rua(dmarc_pctx, NULL, 0, 1))) - for (tmp_ans = 0; rua[tmp_ans]; tmp_ans++) - history_buffer = string_sprintf("%srua %s\n", history_buffer, rua[tmp_ans]); -else - history_buffer = string_sprintf("%srua -\n", history_buffer); - -opendmarc_policy_fetch_pct(dmarc_pctx, &tmp_ans); -history_buffer = string_sprintf("%spct %d\n", history_buffer, tmp_ans); - -opendmarc_policy_fetch_adkim(dmarc_pctx, &tmp_ans); -history_buffer = string_sprintf("%sadkim %d\n", history_buffer, tmp_ans); - -opendmarc_policy_fetch_aspf(dmarc_pctx, &tmp_ans); -history_buffer = string_sprintf("%saspf %d\n", history_buffer, tmp_ans); - -opendmarc_policy_fetch_p(dmarc_pctx, &tmp_ans); -history_buffer = string_sprintf("%sp %d\n", history_buffer, tmp_ans); - -opendmarc_policy_fetch_sp(dmarc_pctx, &tmp_ans); -history_buffer = string_sprintf("%ssp %d\n", history_buffer, tmp_ans); - -history_buffer = string_sprintf( - "%salign_dkim %d\nalign_spf %d\naction %d\n", - history_buffer, da, sa, action); - -/* Write the contents to the history file */ -DEBUG(D_receive) - debug_printf("DMARC logging history data for opendmarc reporting%s\n", - (host_checking || f.running_in_test_harness) ? " (not really)" : ""); -if (host_checking || f.running_in_test_harness) - { - DEBUG(D_receive) - debug_printf("DMARC history data for debugging:\n%s", history_buffer); - } -else - { - written_len = write_to_fd_buf(history_file_fd, - history_buffer, - Ustrlen(history_buffer)); - if (written_len == 0) - { - log_write(0, LOG_MAIN|LOG_PANIC, "failure to write to DMARC history file: %s", - dmarc_history_file); - return DMARC_HIST_WRITE_ERR; - } - (void)close(history_file_fd); - } -return DMARC_HIST_OK; -} - - -/* dmarc_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 -dmarc_process() -{ -int sr, origin; /* used in SPF section */ -int dmarc_spf_result = 0; /* stores spf into dmarc conn ctx */ -int tmp_ans, c; -pdkim_signature * sig = dkim_signatures; -uschar * rr; -BOOL has_dmarc_record = TRUE; -u_char **ruf; /* forensic report addressees, if called for */ - -/* ACLs have "control=dmarc_disable_verify" */ -if (f.dmarc_disable_verify) - return OK; - -/* Store the header From: sender domain for this part of DMARC. - * If there is no from_header struct, then it's likely this message - * is locally generated and relying on fixups to add it. Just skip - * the entire DMARC system if we can't find a From: header....or if - * there was a previous error. - */ -if (!from_header) - { - DEBUG(D_receive) debug_printf("DMARC: no From: header\n"); - dmarc_abort = TRUE; - } -else if (!dmarc_abort) - { - uschar * errormsg; - int dummy, domain; - uschar * p; - uschar saveend; - - f.parse_allow_group = TRUE; - p = parse_find_address_end(from_header->text, FALSE); - saveend = *p; *p = '\0'; - if ((header_from_sender = parse_extract_address(from_header->text, &errormsg, - &dummy, &dummy, &domain, FALSE))) - header_from_sender += domain; - *p = saveend; - - /* The opendmarc library extracts the domain from the email address, but - * only try to store it if it's not empty. Otherwise, skip out of DMARC. */ - if (!header_from_sender || (strcmp( CCS header_from_sender, "") == 0)) - dmarc_abort = TRUE; - libdm_status = dmarc_abort - ? DMARC_PARSE_OKAY - : opendmarc_policy_store_from_domain(dmarc_pctx, header_from_sender); - if (libdm_status != DMARC_PARSE_OKAY) - { - log_write(0, LOG_MAIN|LOG_PANIC, - "failure to store header From: in DMARC: %s, header was '%s'", - opendmarc_policy_status_to_str(libdm_status), from_header->text); - dmarc_abort = TRUE; - } - } - -/* Skip DMARC if connection is SMTP Auth. Temporarily, admin should - * instead do this in the ACLs. */ -if (!dmarc_abort && !sender_host_authenticated) - { - uschar * dmarc_domain; - - /* Use the envelope sender domain for this part of DMARC */ - spf_sender_domain = expand_string(US"$sender_address_domain"); - if (!spf_response) - { - /* No spf data means null envelope sender so generate a domain name - * from the sender_helo_name */ - if (!spf_sender_domain) - { - spf_sender_domain = sender_helo_name; - log_write(0, LOG_MAIN, "DMARC using synthesized SPF sender domain = %s\n", - spf_sender_domain); - DEBUG(D_receive) - debug_printf("DMARC using synthesized SPF sender domain = %s\n", - spf_sender_domain); - } - dmarc_spf_result = DMARC_POLICY_SPF_OUTCOME_NONE; - dmarc_spf_ares_result = ARES_RESULT_UNKNOWN; - origin = DMARC_POLICY_SPF_ORIGIN_HELO; - spf_human_readable = US""; - } - else - { - sr = spf_response->result; - dmarc_spf_result = sr == SPF_RESULT_NEUTRAL ? DMARC_POLICY_SPF_OUTCOME_NONE : - sr == SPF_RESULT_PASS ? DMARC_POLICY_SPF_OUTCOME_PASS : - sr == SPF_RESULT_FAIL ? DMARC_POLICY_SPF_OUTCOME_FAIL : - sr == SPF_RESULT_SOFTFAIL ? DMARC_POLICY_SPF_OUTCOME_TMPFAIL : - DMARC_POLICY_SPF_OUTCOME_NONE; - dmarc_spf_ares_result = sr == SPF_RESULT_NEUTRAL ? ARES_RESULT_NEUTRAL : - sr == SPF_RESULT_PASS ? ARES_RESULT_PASS : - sr == SPF_RESULT_FAIL ? ARES_RESULT_FAIL : - sr == SPF_RESULT_SOFTFAIL ? ARES_RESULT_SOFTFAIL : - sr == SPF_RESULT_NONE ? ARES_RESULT_NONE : - sr == SPF_RESULT_TEMPERROR ? ARES_RESULT_TEMPERROR : - sr == SPF_RESULT_PERMERROR ? ARES_RESULT_PERMERROR : - ARES_RESULT_UNKNOWN; - origin = DMARC_POLICY_SPF_ORIGIN_MAILFROM; - spf_human_readable = US spf_response->header_comment; - DEBUG(D_receive) - debug_printf("DMARC using SPF sender domain = %s\n", spf_sender_domain); - } - if (strcmp( CCS spf_sender_domain, "") == 0) - dmarc_abort = TRUE; - if (!dmarc_abort) - { - libdm_status = opendmarc_policy_store_spf(dmarc_pctx, spf_sender_domain, - dmarc_spf_result, origin, spf_human_readable); - if (libdm_status != DMARC_PARSE_OKAY) - log_write(0, LOG_MAIN|LOG_PANIC, "failure to store spf for DMARC: %s", - opendmarc_policy_status_to_str(libdm_status)); - } - - /* Now we cycle through the dkim signature results and put into - * the opendmarc context, further building the DMARC reply. */ - dkim_history_buffer = US""; - while (sig) - { - int dkim_result, dkim_ares_result, vs, ves; - - vs = sig->verify_status & ~PDKIM_VERIFY_POLICY; - ves = sig->verify_ext_status; - dkim_result = vs == PDKIM_VERIFY_PASS ? DMARC_POLICY_DKIM_OUTCOME_PASS : - vs == PDKIM_VERIFY_FAIL ? DMARC_POLICY_DKIM_OUTCOME_FAIL : - vs == PDKIM_VERIFY_INVALID ? DMARC_POLICY_DKIM_OUTCOME_TMPFAIL : - DMARC_POLICY_DKIM_OUTCOME_NONE; - libdm_status = opendmarc_policy_store_dkim(dmarc_pctx, US sig->domain, - dkim_result, US""); - DEBUG(D_receive) - debug_printf("DMARC adding DKIM sender domain = %s\n", sig->domain); - if (libdm_status != DMARC_PARSE_OKAY) - log_write(0, LOG_MAIN|LOG_PANIC, - "failure to store dkim (%s) for DMARC: %s", - sig->domain, opendmarc_policy_status_to_str(libdm_status)); - - dkim_ares_result = - vs == PDKIM_VERIFY_PASS ? ARES_RESULT_PASS : - vs == PDKIM_VERIFY_FAIL ? ARES_RESULT_FAIL : - vs == PDKIM_VERIFY_NONE ? ARES_RESULT_NONE : - vs == PDKIM_VERIFY_INVALID ? - ves == PDKIM_VERIFY_INVALID_PUBKEY_UNAVAILABLE ? ARES_RESULT_PERMERROR : - ves == PDKIM_VERIFY_INVALID_BUFFER_SIZE ? ARES_RESULT_PERMERROR : - ves == PDKIM_VERIFY_INVALID_PUBKEY_DNSRECORD ? ARES_RESULT_PERMERROR : - ves == PDKIM_VERIFY_INVALID_PUBKEY_IMPORT ? ARES_RESULT_PERMERROR : - ARES_RESULT_UNKNOWN : - ARES_RESULT_UNKNOWN; - dkim_history_buffer = string_sprintf("%sdkim %s %d\n", dkim_history_buffer, - sig->domain, dkim_ares_result); - sig = sig->next; - } - - /* Look up DMARC policy record in DNS. We do this explicitly, rather than - letting the dmarc library do it with opendmarc_policy_query_dmarc(), so that - our dns access path is used for debug tracing and for the testsuite - diversion. */ - - libdm_status = (rr = dmarc_dns_lookup(header_from_sender)) - ? opendmarc_policy_store_dmarc(dmarc_pctx, rr, header_from_sender, NULL) - : DMARC_DNS_ERROR_NO_RECORD; - switch (libdm_status) - { - case DMARC_DNS_ERROR_NXDOMAIN: - case DMARC_DNS_ERROR_NO_RECORD: - DEBUG(D_receive) - debug_printf("DMARC no record found for %s\n", header_from_sender); - has_dmarc_record = FALSE; - break; - case DMARC_PARSE_OKAY: - DEBUG(D_receive) - debug_printf("DMARC record found for %s\n", header_from_sender); - break; - case DMARC_PARSE_ERROR_BAD_VALUE: - DEBUG(D_receive) - debug_printf("DMARC record parse error for %s\n", header_from_sender); - has_dmarc_record = FALSE; - break; - default: - /* everything else, skip dmarc */ - DEBUG(D_receive) - debug_printf("DMARC skipping (%d), unsure what to do with %s", - libdm_status, from_header->text); - has_dmarc_record = FALSE; - break; - } - -/* Store the policy string in an expandable variable. */ - - libdm_status = opendmarc_policy_fetch_p(dmarc_pctx, &tmp_ans); - for (c = 0; dmarc_policy_description[c].name; c++) - if (tmp_ans == dmarc_policy_description[c].value) - { - dmarc_domain_policy = string_sprintf("%s",dmarc_policy_description[c].name); - break; - } - - /* Can't use exim's string manipulation functions so allocate memory - for libopendmarc using its max hostname length definition. */ - - dmarc_domain = store_get(DMARC_MAXHOSTNAMELEN, TRUE); - libdm_status = opendmarc_policy_fetch_utilized_domain(dmarc_pctx, - dmarc_domain, DMARC_MAXHOSTNAMELEN-1); - store_release_above(dmarc_domain + Ustrlen(dmarc_domain)+1); - dmarc_used_domain = dmarc_domain; - - if (libdm_status != DMARC_PARSE_OKAY) - log_write(0, LOG_MAIN|LOG_PANIC, - "failure to read domainname used for DMARC lookup: %s", - opendmarc_policy_status_to_str(libdm_status)); - - dmarc_policy = libdm_status = opendmarc_get_policy_to_enforce(dmarc_pctx); - switch(libdm_status) - { - case DMARC_POLICY_ABSENT: /* No DMARC record found */ - dmarc_status = US"norecord"; - dmarc_pass_fail = US"none"; - dmarc_status_text = US"No DMARC record"; - action = DMARC_RESULT_ACCEPT; - break; - case DMARC_FROM_DOMAIN_ABSENT: /* No From: domain */ - dmarc_status = US"nofrom"; - dmarc_pass_fail = US"temperror"; - dmarc_status_text = US"No From: domain found"; - action = DMARC_RESULT_ACCEPT; - break; - case DMARC_POLICY_NONE: /* Accept and report */ - dmarc_status = US"none"; - dmarc_pass_fail = US"none"; - dmarc_status_text = US"None, Accept"; - action = DMARC_RESULT_ACCEPT; - break; - case DMARC_POLICY_PASS: /* Explicit accept */ - dmarc_status = US"accept"; - dmarc_pass_fail = US"pass"; - dmarc_status_text = US"Accept"; - action = DMARC_RESULT_ACCEPT; - break; - case DMARC_POLICY_REJECT: /* Explicit reject */ - dmarc_status = US"reject"; - dmarc_pass_fail = US"fail"; - dmarc_status_text = US"Reject"; - action = DMARC_RESULT_REJECT; - break; - case DMARC_POLICY_QUARANTINE: /* Explicit quarantine */ - dmarc_status = US"quarantine"; - dmarc_pass_fail = US"fail"; - dmarc_status_text = US"Quarantine"; - action = DMARC_RESULT_QUARANTINE; - break; - default: - dmarc_status = US"temperror"; - dmarc_pass_fail = US"temperror"; - dmarc_status_text = US"Internal Policy Error"; - action = DMARC_RESULT_TEMPFAIL; - break; - } - - libdm_status = opendmarc_policy_fetch_alignment(dmarc_pctx, &da, &sa); - if (libdm_status != DMARC_PARSE_OKAY) - log_write(0, LOG_MAIN|LOG_PANIC, "failure to read DMARC alignment: %s", - opendmarc_policy_status_to_str(libdm_status)); - - if (has_dmarc_record) - { - log_write(0, LOG_MAIN, "DMARC results: spf_domain=%s dmarc_domain=%s " - "spf_align=%s dkim_align=%s enforcement='%s'", - spf_sender_domain, dmarc_used_domain, - sa==DMARC_POLICY_SPF_ALIGNMENT_PASS ?"yes":"no", - da==DMARC_POLICY_DKIM_ALIGNMENT_PASS ?"yes":"no", - dmarc_status_text); - history_file_status = dmarc_write_history_file(); - /* Now get the forensic reporting addresses, if any */ - ruf = opendmarc_policy_fetch_ruf(dmarc_pctx, NULL, 0, 1); - dmarc_send_forensic_report(ruf); - } - } - -/* shut down libopendmarc */ -if (dmarc_pctx) - (void) opendmarc_policy_connect_shutdown(dmarc_pctx); -if (!f.dmarc_disable_verify) - (void) opendmarc_policy_library_shutdown(&dmarc_ctx); - -return OK; -} - -uschar * -dmarc_exim_expand_query(int what) -{ -if (f.dmarc_disable_verify || !dmarc_pctx) - return dmarc_exim_expand_defaults(what); - -if (what == DMARC_VERIFY_STATUS) - return dmarc_status; -return US""; -} - -uschar * -dmarc_exim_expand_defaults(int what) -{ -if (what == DMARC_VERIFY_STATUS) - return f.dmarc_disable_verify ? US"off" : US"none"; -return US""; -} - - -gstring * -authres_dmarc(gstring * g) -{ -if (f.dmarc_has_been_checked) - { - g = string_append(g, 2, US";\n\tdmarc=", dmarc_pass_fail); - if (header_from_sender) - g = string_append(g, 2, US" header.from=", header_from_sender); - } -return g; -} - -# endif /* SUPPORT_SPF */ -#endif /* SUPPORT_DMARC */ -/* vi: aw ai sw=2 - */