* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2015 */
+/* Copyright (c) University of Cambridge 1995 - 2016 */
/* See the file NOTICE for conditions of use and distribution. */
/* Code for handling Access Control Lists (ACLs) */
ACLC_DECODE,
#endif
ACLC_DELAY,
-#ifdef WITH_OLD_DEMIME
- ACLC_DEMIME,
-#endif
#ifndef DISABLE_DKIM
ACLC_DKIM_SIGNER,
ACLC_DKIM_STATUS,
#ifdef WITH_CONTENT_SCAN
ACLC_MIME_REGEX,
#endif
+ ACLC_QUEUE,
ACLC_RATELIMIT,
ACLC_RECIPIENTS,
#ifdef WITH_CONTENT_SCAN
ACLC_VERIFY };
/* ACL conditions/modifiers: "delay", "control", "continue", "endpass",
-"message", "log_message", "log_reject_target", "logwrite", and "set" are
+"message", "log_message", "log_reject_target", "logwrite", "queue" and "set" are
modifiers that look like conditions but always return TRUE. They are used for
their side effects. */
US"decode",
#endif
US"delay",
-#ifdef WITH_OLD_DEMIME
- US"demime",
-#endif
#ifndef DISABLE_DKIM
US"dkim_signers",
US"dkim_status",
#ifdef WITH_CONTENT_SCAN
US"mime_regex",
#endif
+ US"queue",
US"ratelimit",
US"recipients",
#ifdef WITH_CONTENT_SCAN
US"regex",
#endif
US"remove_header",
- US"sender_domains", US"senders", US"set",
+ US"sender_domains",
+ US"senders",
+ US"set",
#ifdef WITH_CONTENT_SCAN
US"spam",
#endif
#endif
CONTROL_FAKEDEFER,
CONTROL_FAKEREJECT,
-#ifdef EXPERIMENTAL_INTERNATIONAL
+#ifdef SUPPORT_I18N
CONTROL_UTF8_DOWNCONVERT,
#endif
CONTROL_NO_MULTILINE,
#endif
US"fakedefer",
US"fakereject",
-#ifdef EXPERIMENTAL_INTERNATIONAL
+#ifdef SUPPORT_I18N
US"utf8_downconvert",
#endif
US"no_multiline_responses",
TRUE, /* decode */
#endif
TRUE, /* delay */
-#ifdef WITH_OLD_DEMIME
- TRUE, /* demime */
-#endif
#ifndef DISABLE_DKIM
TRUE, /* dkim_signers */
TRUE, /* dkim_status */
#ifdef WITH_CONTENT_SCAN
TRUE, /* mime_regex */
#endif
+ TRUE, /* queue */
TRUE, /* ratelimit */
FALSE, /* recipients */
#ifdef WITH_CONTENT_SCAN
FALSE, /* decode */
#endif
TRUE, /* delay */
-#ifdef WITH_OLD_DEMIME
- FALSE, /* demime */
-#endif
#ifndef DISABLE_DKIM
FALSE, /* dkim_signers */
FALSE, /* dkim_status */
#ifdef WITH_CONTENT_SCAN
FALSE, /* mime_regex */
#endif
+ TRUE, /* queue */
FALSE, /* ratelimit */
FALSE, /* recipients */
#ifdef WITH_CONTENT_SCAN
(1<<ACL_WHERE_NOTQUIT), /* delay */
- #ifdef WITH_OLD_DEMIME
- (unsigned int)
- ~((1<<ACL_WHERE_DATA)| /* demime */
- #ifndef DISABLE_PRDR
- (1<<ACL_WHERE_PRDR)|
- #endif
- (1<<ACL_WHERE_NOTSMTP)),
- #endif
-
#ifndef DISABLE_DKIM
(unsigned int)
~(1<<ACL_WHERE_DKIM), /* dkim_signers */
~(1<<ACL_WHERE_DATA), /* dmarc_status */
#endif
- (1<<ACL_WHERE_NOTSMTP)| /* dnslists */
- (1<<ACL_WHERE_NOTSMTP_START),
+ /* Explicit key lookups can be made in non-smtp ACLs so pass
+ always and check in the verify processing itself. */
+
+ 0, /* dnslists */
(unsigned int)
~((1<<ACL_WHERE_RCPT) /* domains */
+ |(1<<ACL_WHERE_VRFY)
#ifndef DISABLE_PRDR
|(1<<ACL_WHERE_PRDR)
#endif
(unsigned int)
~((1<<ACL_WHERE_RCPT) /* local_parts */
+ |(1<<ACL_WHERE_VRFY)
#ifndef DISABLE_PRDR
|(1<<ACL_WHERE_PRDR)
#endif
~(1<<ACL_WHERE_MIME), /* mime_regex */
#endif
+ 0, /* queue */
0, /* ratelimit */
(unsigned int)
#endif
(1<<ACL_WHERE_MIME)),
-#ifdef EXPERIMENTAL_INTERNATIONAL
+#ifdef SUPPORT_I18N
0, /* utf8_downconvert */
#endif
{ US"submission", CONTROL_SUBMISSION, TRUE },
{ US"suppress_local_fixups", CONTROL_SUPPRESS_LOCAL_FIXUPS, FALSE },
{ US"cutthrough_delivery", CONTROL_CUTTHROUGH_DELIVERY, FALSE },
-#ifdef EXPERIMENTAL_INTERNATIONAL
+#ifdef SUPPORT_I18N
{ US"utf8_downconvert", CONTROL_UTF8_DOWNCONVERT, TRUE }
#endif
};
/* An empty string does nothing; ensure exactly one final newline. */
if (hlen <= 0) return;
-if (hstring[--hlen] != '\n')
+if (hstring[--hlen] != '\n') /* no newline */
q = string_sprintf("%s\n", hstring);
-else if (hstring[hlen-1] == '\n')
+else if (hstring[hlen-1] == '\n') /* double newline */
{
uschar * s = string_copy(hstring);
while(s[--hlen] == '\n')
for (;;)
{
- q = Ustrchr(q, '\n');
+ q = Ustrchr(q, '\n'); /* we know there was a newline */
if (*(++q) != ' ' && *q != '\t') break;
}
fn_hdrs_added(void)
{
uschar * ret = NULL;
+int size = 0;
+int ptr = 0;
header_line * h = acl_added_headers;
uschar * s;
uschar * cp;
-int size = 0;
-int ptr = 0;
if (!h) return NULL;
if (cp[1] == '\0') break;
/* contains embedded newline; needs doubling */
- ret = string_cat(ret, &size, &ptr, s, cp-s+1);
- ret = string_cat(ret, &size, &ptr, US"\n", 1);
+ ret = string_catn(ret, &size, &ptr, s, cp-s+1);
+ ret = string_catn(ret, &size, &ptr, US"\n", 1);
s = cp+1;
}
/* last bit of header */
- ret = string_cat(ret, &size, &ptr, s, cp-s+1); /* newline-sep list */
+ ret = string_catn(ret, &size, &ptr, s, cp-s+1); /* newline-sep list */
}
while((h = h->next));
test whether it was successful or not. (This is for optional verification; for
mandatory verification, the connection doesn't last this long.) */
- if (tls_in.certificate_verified) return OK;
- *user_msgptr = US"no verified certificate";
- return FAIL;
+ if (tls_in.certificate_verified) return OK;
+ *user_msgptr = US"no verified certificate";
+ return FAIL;
case VERIFY_HELO:
/* We can test the result of optional HELO verification that might have
occurred earlier. If not, we can attempt the verification now. */
- if (!helo_verified && !helo_verify_failed) smtp_verify_helo();
- return helo_verified? OK : FAIL;
+ if (!helo_verified && !helo_verify_failed) smtp_verify_helo();
+ return helo_verified? OK : FAIL;
case VERIFY_CSA:
/* Do Client SMTP Authorization checks in a separate function, and turn the
result code into user-friendly strings. */
- rc = acl_verify_csa(list);
- *log_msgptr = *user_msgptr = string_sprintf("client SMTP authorization %s",
+ rc = acl_verify_csa(list);
+ *log_msgptr = *user_msgptr = string_sprintf("client SMTP authorization %s",
csa_reason_string[rc]);
- csa_status = csa_status_string[rc];
- DEBUG(D_acl) debug_printf("CSA result %s\n", csa_status);
- return csa_return_code[rc];
+ csa_status = csa_status_string[rc];
+ DEBUG(D_acl) debug_printf("CSA result %s\n", csa_status);
+ return csa_return_code[rc];
case VERIFY_HDR_SYNTAX:
/* Check that all relevant header lines have the correct syntax. If there is
always). */
rc = verify_check_headers(log_msgptr);
- if (rc != OK && smtp_return_error_details && *log_msgptr != NULL)
- *user_msgptr = string_sprintf("Rejected after DATA: %s", *log_msgptr);
+ if (rc != OK && *log_msgptr)
+ if (smtp_return_error_details)
+ *user_msgptr = string_sprintf("Rejected after DATA: %s", *log_msgptr);
+ else
+ acl_verify_message = *log_msgptr;
return rc;
case VERIFY_HDR_NAMES_ASCII:
uschar *save_address_data = deliver_address_data;
sender_vaddr = deliver_make_addr(verify_sender_address, TRUE);
-#ifdef EXPERIMENTAL_INTERNATIONAL
+#ifdef SUPPORT_I18N
if ((sender_vaddr->prop.utf8_msg = message_smtputf8))
{
sender_vaddr->prop.utf8_downcvt = message_utf8_downconvert == 1;
sender_rate_limit = string_nextinlist(&arg, &sep, NULL, 0);
if (sender_rate_limit == NULL)
- {
- limit = -1.0;
- ss = NULL; /* compiler quietening */
- }
-else
- {
- limit = Ustrtod(sender_rate_limit, &ss);
- if (tolower(*ss) == 'k') { limit *= 1024.0; ss++; }
- else if (tolower(*ss) == 'm') { limit *= 1024.0*1024.0; ss++; }
- else if (tolower(*ss) == 'g') { limit *= 1024.0*1024.0*1024.0; ss++; }
- }
+ return ratelimit_error(log_msgptr, "sender rate limit not set");
+
+limit = Ustrtod(sender_rate_limit, &ss);
+if (tolower(*ss) == 'k') { limit *= 1024.0; ss++; }
+else if (tolower(*ss) == 'm') { limit *= 1024.0*1024.0; ss++; }
+else if (tolower(*ss) == 'g') { limit *= 1024.0*1024.0*1024.0; ss++; }
+
if (limit < 0.0 || *ss != '\0')
return ratelimit_error(log_msgptr,
"\"%s\" is not a positive number", sender_rate_limit);
break;
case CONTROL_CUTTHROUGH_DELIVERY:
+#ifndef DISABLE_PRDR
if (prdr_requested)
+#else
+ if (0)
+#endif
/* Too hard to think about for now. We might in future cutthrough
the case where both sides handle prdr and this-node prdr acl
is "accept" */
}
return ERROR;
- #ifdef EXPERIMENTAL_INTERNATIONAL
+#ifdef SUPPORT_I18N
case CONTROL_UTF8_DOWNCONVERT:
if (*p == '/')
{
break;
}
return ERROR;
- #endif
+#endif
}
break;
debug_printf("delay skipped in -bh checking mode\n");
}
+ /* NOTE 1: Remember that we may be
+ dealing with stdin/stdout here, in addition to TCP/IP connections.
+ Also, delays may be specified for non-SMTP input, where smtp_out and
+ smtp_in will be NULL. Whatever is done must work in all cases.
+
+ NOTE 2: The added feature of flushing the output before a delay must
+ apply only to SMTP input. Hence the test for smtp_out being non-NULL.
+ */
+
+ else
+ {
+ if (smtp_out != NULL && !disable_delay_flush)
+ mac_smtp_fflush();
+
+#if !defined(NO_POLL_H) && defined (POLLRDHUP)
+ {
+ struct pollfd p;
+ nfds_t n = 0;
+ if (smtp_out)
+ {
+ p.fd = fileno(smtp_out);
+ p.events = POLLRDHUP;
+ n = 1;
+ }
+ if (poll(&p, n, delay*1000) > 0)
+ HDEBUG(D_acl) debug_printf("delay cancelled by peer close\n");
+ }
+#else
/* It appears to be impossible to detect that a TCP/IP connection has
gone away without reading from it. This means that we cannot shorten
the delay below if the client goes away, because we cannot discover
Exim process is not held up unnecessarily. However, it seems that we
can't. The poll() function does not do the right thing, and in any case
it is not always available.
-
- NOTE 1: If ever this state of affairs changes, remember that we may be
- dealing with stdin/stdout here, in addition to TCP/IP connections.
- Also, delays may be specified for non-SMTP input, where smtp_out and
- smtp_in will be NULL. Whatever is done must work in all cases.
-
- NOTE 2: The added feature of flushing the output before a delay must
- apply only to SMTP input. Hence the test for smtp_out being non-NULL.
*/
- else
- {
- if (smtp_out != NULL && !disable_delay_flush) mac_smtp_fflush();
while (delay > 0) delay = sleep(delay);
+#endif
}
}
}
break;
- #ifdef WITH_OLD_DEMIME
- case ACLC_DEMIME:
- rc = demime(&arg);
- break;
- #endif
-
#ifndef DISABLE_DKIM
case ACLC_DKIM_SIGNER:
if (dkim_cur_signer != NULL)
rc = match_isinlist(dkim_cur_signer,
&arg,0,NULL,NULL,MCL_STRING,TRUE,NULL);
else
- rc = FAIL;
+ rc = FAIL;
break;
case ACLC_DKIM_STATUS:
#endif
case ACLC_DNSLISTS:
- rc = verify_check_dnsbl(&arg);
+ rc = verify_check_dnsbl(where, &arg, log_msgptr);
break;
case ACLC_DOMAINS:
break;
#endif
+ case ACLC_QUEUE:
+ queue_name = string_copy_malloc(arg);
+ break;
+
case ACLC_RATELIMIT:
rc = acl_ratelimit(arg, where, log_msgptr);
break;
case ACLC_SET:
{
int old_pool = store_pool;
- if (cb->u.varname[0] == 'c') store_pool = POOL_PERM;
+ if ( cb->u.varname[0] == 'c'
+#ifndef DISABLE_EVENT
+ || event_name /* An event is being delivered */
+#endif
+ )
+ store_pool = POOL_PERM;
acl_var_create(cb->u.varname)->data.ptr = string_copy(arg);
store_pool = old_pool;
}
case ACLC_VERIFY:
rc = acl_verify(where, addr, arg, user_msgptr, log_msgptr, basic_errno);
- acl_verify_message = *user_msgptr;
+ if (*user_msgptr)
+ acl_verify_message = *user_msgptr;
if (verb == ACL_WARN) *user_msgptr = NULL;
break;
case ACL_WARN:
if (cond == OK)
acl_warn(where, *user_msgptr, *log_msgptr);
- else if (cond == DEFER && (log_extra_selector & LX_acl_warn_skipped) != 0)
+ else if (cond == DEFER && LOGGING(acl_warn_skipped))
log_write(0, LOG_MAIN, "%s Warning: ACL \"warn\" statement skipped: "
"condition test deferred%s%s", host_and_ident(TRUE),
(*log_msgptr == NULL)? US"" : US": ",
log_reject_target = LOG_MAIN|LOG_REJECT;
#ifndef DISABLE_PRDR
-if (where == ACL_WHERE_RCPT || where == ACL_WHERE_PRDR)
+if (where==ACL_WHERE_RCPT || where==ACL_WHERE_VRFY || where==ACL_WHERE_PRDR)
#else
-if (where == ACL_WHERE_RCPT)
+if (where==ACL_WHERE_RCPT || where==ACL_WHERE_VRFY)
#endif
{
adb = address_defaults;
*log_msgptr = US"defer in percent_hack_domains check";
return DEFER;
}
-#ifdef EXPERIMENTAL_INTERNATIONAL
+#ifdef SUPPORT_I18N
if ((addr->prop.utf8_msg = message_smtputf8))
{
addr->prop.utf8_downcvt = message_utf8_downconvert == 1;
and rcpt acl returned accept,
and first recipient (cancel on any subsequents)
open one now and run it up to RCPT acceptance.
-A failed verify should cancel cutthrough request.
-
+A failed verify should cancel cutthrough request,
+and will pass the fail to the originator.
Initial implementation: dual-write to spool.
Assume the rxd datastream is now being copied byte-for-byte to an open cutthrough connection.
#ifndef DISABLE_PRDR
case ACL_WHERE_PRDR:
#endif
- if (rc == OK && cutthrough.delivery && rcpt_count > cutthrough.nrcpt)
- open_cutthrough_connection(addr);
+ if (host_checking_callout) /* -bhc mode */
+ cancel_cutthrough_connection("host-checking mode");
+ else if (rc == OK && cutthrough.delivery && rcpt_count > cutthrough.nrcpt)
+ rc = open_cutthrough_connection(addr);
break;
case ACL_WHERE_PREDATA:
- if( rc == OK )
+ if (rc == OK)
cutthrough_predata();
else
cancel_cutthrough_connection("predata acl not ok");
projects / exim.git / blobdiff