-/* $Cambridge: exim/src/src/acl.c,v 1.88 2010/06/06 00:27:52 pdp Exp $ */
-
/*************************************************
* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2009 */
+/* Copyright (c) University of Cambridge 1995 - 2012 */
/* See the file NOTICE for conditions of use and distribution. */
/* Code for handling Access Control Lists (ACLs) */
#ifdef WITH_CONTENT_SCAN
ACLC_REGEX,
#endif
+ ACLC_REMOVE_HEADER,
ACLC_SENDER_DOMAINS,
ACLC_SENDERS,
ACLC_SET,
#ifdef WITH_CONTENT_SCAN
US"regex",
#endif
+ US"remove_header",
US"sender_domains", US"senders", US"set",
#ifdef WITH_CONTENT_SCAN
US"spam",
#ifndef DISABLE_DKIM
CONTROL_DKIM_VERIFY,
#endif
+ CONTROL_DSCP,
CONTROL_ERROR,
CONTROL_CASEFUL_LOCAL_PART,
CONTROL_CASELOWER_LOCAL_PART,
+ CONTROL_CUTTHROUGH_DELIVERY,
CONTROL_ENFORCE_SYNC,
CONTROL_NO_ENFORCE_SYNC,
CONTROL_FREEZE,
#ifndef DISABLE_DKIM
US"dkim_disable_verify",
#endif
+ US"dscp",
US"error",
US"caseful_local_part",
US"caselower_local_part",
+ US"cutthrough_delivery",
US"enforce_sync",
US"no_enforce_sync",
US"freeze",
checking functions. */
static uschar cond_expand_at_top[] = {
- TRUE, /* acl */
+ FALSE, /* acl */
TRUE, /* add_header */
FALSE, /* authenticated */
#ifdef EXPERIMENTAL_BRIGHTMAIL
#ifdef WITH_CONTENT_SCAN
TRUE, /* regex */
#endif
+ TRUE, /* remove_header */
FALSE, /* sender_domains */
FALSE, /* senders */
TRUE, /* set */
#ifdef WITH_CONTENT_SCAN
FALSE, /* regex */
#endif
+ TRUE, /* remove_header */
FALSE, /* sender_domains */
FALSE, /* senders */
TRUE, /* set */
(1<<ACL_WHERE_MIME)),
#endif
+ (unsigned int)
+ ~((1<<ACL_WHERE_MAIL)|(1<<ACL_WHERE_RCPT)| /* remove_header */
+ (1<<ACL_WHERE_PREDATA)|(1<<ACL_WHERE_DATA)|
+ (1<<ACL_WHERE_MIME)|(1<<ACL_WHERE_NOTSMTP)|
+ (1<<ACL_WHERE_NOTSMTP_START)),
+
(1<<ACL_WHERE_AUTH)|(1<<ACL_WHERE_CONNECT)| /* sender_domains */
(1<<ACL_WHERE_HELO)|
(1<<ACL_WHERE_MAILAUTH)|(1<<ACL_WHERE_QUIT)|
(1<<ACL_WHERE_NOTSMTP_START),
#endif
+ (1<<ACL_WHERE_NOTSMTP)|
+ (1<<ACL_WHERE_NOTSMTP_START)|
+ (1<<ACL_WHERE_NOTQUIT), /* dscp */
+
0, /* error */
(unsigned int)
(unsigned int)
~(1<<ACL_WHERE_RCPT), /* caselower_local_part */
+ (unsigned int)
+ 0, /* cutthrough_delivery */
+
(1<<ACL_WHERE_NOTSMTP)| /* enforce_sync */
(1<<ACL_WHERE_NOTSMTP_START),
#ifndef DISABLE_DKIM
{ US"dkim_disable_verify", CONTROL_DKIM_VERIFY, FALSE },
#endif
+ { US"dscp", CONTROL_DSCP, TRUE },
{ US"caseful_local_part", CONTROL_CASEFUL_LOCAL_PART, FALSE },
{ US"caselower_local_part", CONTROL_CASELOWER_LOCAL_PART, FALSE },
{ US"enforce_sync", CONTROL_ENFORCE_SYNC, FALSE },
{ US"fakedefer", CONTROL_FAKEDEFER, TRUE },
{ US"fakereject", CONTROL_FAKEREJECT, TRUE },
{ US"submission", CONTROL_SUBMISSION, TRUE },
- { US"suppress_local_fixups", CONTROL_SUPPRESS_LOCAL_FIXUPS, FALSE }
+ { US"suppress_local_fixups", CONTROL_SUPPRESS_LOCAL_FIXUPS, FALSE },
+ { US"cutthrough_delivery", CONTROL_CUTTHROUGH_DELIVERY, FALSE }
};
/* Support data structures for Client SMTP Authorization. acl_verify_csa()
/* Enable recursion between acl_check_internal() and acl_check_condition() */
-static int acl_check_internal(int, address_item *, uschar *, int, uschar **,
- uschar **);
+static int acl_check_wargs(int, address_item *, uschar *, int, uschar **,
+ uschar **);
/*************************************************
uschar *p, *q;
int hlen = Ustrlen(hstring);
-/* An empty string does nothing; otherwise add a final newline if necessary. */
+/* Ignore any leading newlines */
+while (*hstring == '\n') hstring++, hlen--;
+/* An empty string does nothing; ensure exactly one final newline. */
if (hlen <= 0) return;
-if (hstring[hlen-1] != '\n') hstring = string_sprintf("%s\n", hstring);
+if (hstring[--hlen] != '\n') hstring = string_sprintf("%s\n", hstring);
+else while(hstring[--hlen] == '\n') hstring[hlen+1] = '\0';
/* Loop for multiple header lines, taking care about continuations */
if (*s == ':' || !isgraph(*s)) break;
}
- s = string_sprintf("%s%.*s", (*s == ':')? "" : "X-ACL-Warn: ", q - p, p);
+ s = string_sprintf("%s%.*s", (*s == ':')? "" : "X-ACL-Warn: ", (int) (q - p), p);
hlen = Ustrlen(s);
/* See if this line has already been added */
+/*************************************************
+* List the added header lines *
+*************************************************/
+uschar *
+fn_hdrs_added(void)
+{
+uschar * ret = NULL;
+header_line * h = acl_added_headers;
+uschar * s;
+uschar * cp;
+int size = 0;
+int ptr = 0;
+
+if (!h) return NULL;
+
+do
+ {
+ s = h->text;
+ while ((cp = Ustrchr(s, '\n')) != 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);
+ s = cp+1;
+ }
+ /* last bit of header */
+
+ ret = string_cat(ret, &size, &ptr, s, cp-s+1); /* newline-sep list */
+ }
+while((h = h->next));
+
+ret[ptr-1] = '\0'; /* overwrite last newline */
+return ret;
+}
+
+
+/*************************************************
+* Set up removed header line(s) *
+*************************************************/
+
+/* This function is called by the remove_header modifier. The argument is
+treated as a sequence of header names which are added to a colon separated
+list, provided there isn't an identical one already there.
+
+Argument: string of header names
+Returns: nothing
+*/
+
+static void
+setup_remove_header(uschar *hnames)
+{
+if (*hnames != 0)
+ {
+ if (acl_removed_headers == NULL)
+ acl_removed_headers = hnames;
+ else
+ acl_removed_headers = string_sprintf("%s : %s", acl_removed_headers, hnames);
+ }
+}
+
+
/*************************************************
* Handle warnings *
* Handle verification (address & other) *
*************************************************/
+enum { VERIFY_REV_HOST_LKUP, VERIFY_CERT, VERIFY_HELO, VERIFY_CSA, VERIFY_HDR_SYNTAX,
+ VERIFY_NOT_BLIND, VERIFY_HDR_SNDR, VERIFY_SNDR, VERIFY_RCPT
+ };
+typedef struct {
+ uschar * name;
+ int value;
+ unsigned where_allowed; /* bitmap */
+ BOOL no_options; /* Never has /option(s) following */
+ unsigned alt_opt_sep; /* >0 Non-/ option separator (custom parser) */
+ } verify_type_t;
+static verify_type_t verify_type_list[] = {
+ { US"reverse_host_lookup", VERIFY_REV_HOST_LKUP, ~0, TRUE, 0 },
+ { US"certificate", VERIFY_CERT, ~0, TRUE, 0 },
+ { US"helo", VERIFY_HELO, ~0, TRUE, 0 },
+ { US"csa", VERIFY_CSA, ~0, FALSE, 0 },
+ { US"header_syntax", VERIFY_HDR_SYNTAX, (1<<ACL_WHERE_DATA)|(1<<ACL_WHERE_NOTSMTP), TRUE, 0 },
+ { US"not_blind", VERIFY_NOT_BLIND, (1<<ACL_WHERE_DATA)|(1<<ACL_WHERE_NOTSMTP), TRUE, 0 },
+ { US"header_sender", VERIFY_HDR_SNDR, (1<<ACL_WHERE_DATA)|(1<<ACL_WHERE_NOTSMTP), FALSE, 0 },
+ { US"sender", VERIFY_SNDR, (1<<ACL_WHERE_MAIL)|(1<<ACL_WHERE_RCPT)
+ |(1<<ACL_WHERE_PREDATA)|(1<<ACL_WHERE_DATA)|(1<<ACL_WHERE_NOTSMTP),
+ FALSE, 6 },
+ { US"recipient", VERIFY_RCPT, (1<<ACL_WHERE_RCPT), FALSE, 0 }
+ };
+
+
+enum { CALLOUT_DEFER_OK, CALLOUT_NOCACHE, CALLOUT_RANDOM, CALLOUT_USE_SENDER,
+ CALLOUT_USE_POSTMASTER, CALLOUT_POSTMASTER, CALLOUT_FULLPOSTMASTER,
+ CALLOUT_MAILFROM, CALLOUT_POSTMASTER_MAILFROM, CALLOUT_MAXWAIT, CALLOUT_CONNECT,
+ CALLOUT_TIME
+ };
+typedef struct {
+ uschar * name;
+ int value;
+ int flag;
+ BOOL has_option; /* Has =option(s) following */
+ BOOL timeval; /* Has a time value */
+ } callout_opt_t;
+static callout_opt_t callout_opt_list[] = {
+ { US"defer_ok", CALLOUT_DEFER_OK, 0, FALSE, FALSE },
+ { US"no_cache", CALLOUT_NOCACHE, vopt_callout_no_cache, FALSE, FALSE },
+ { US"random", CALLOUT_RANDOM, vopt_callout_random, FALSE, FALSE },
+ { US"use_sender", CALLOUT_USE_SENDER, vopt_callout_recipsender, FALSE, FALSE },
+ { US"use_postmaster", CALLOUT_USE_POSTMASTER,vopt_callout_recippmaster, FALSE, FALSE },
+ { US"postmaster_mailfrom",CALLOUT_POSTMASTER_MAILFROM,0, TRUE, FALSE },
+ { US"postmaster", CALLOUT_POSTMASTER, 0, FALSE, FALSE },
+ { US"fullpostmaster", CALLOUT_FULLPOSTMASTER,vopt_callout_fullpm, FALSE, FALSE },
+ { US"mailfrom", CALLOUT_MAILFROM, 0, TRUE, FALSE },
+ { US"maxwait", CALLOUT_MAXWAIT, 0, TRUE, TRUE },
+ { US"connect", CALLOUT_CONNECT, 0, TRUE, TRUE },
+ { NULL, CALLOUT_TIME, 0, FALSE, TRUE }
+ };
+
+
+
/* This function implements the "verify" condition. It is called when
encountered in any ACL, because some tests are almost always permitted. Some
just don't make sense, and always fail (for example, an attempt to test a host
uschar *se_mailfrom = NULL;
/* Some of the verify items have slash-separated options; some do not. Diagnose
-an error if options are given for items that don't expect them. This code has
-now got very message. Refactoring to use a table would be a good idea one day.
+an error if options are given for items that don't expect them.
*/
uschar *slash = Ustrchr(arg, '/');
uschar *list = arg;
uschar *ss = string_nextinlist(&list, &sep, big_buffer, big_buffer_size);
+verify_type_t * vp;
if (ss == NULL) goto BAD_VERIFY;
/* Handle name/address consistency verification in a separate function. */
-if (strcmpic(ss, US"reverse_host_lookup") == 0)
+for (vp= verify_type_list;
+ (char *)vp < (char *)verify_type_list + sizeof(verify_type_list);
+ vp++
+ )
+ if (vp->alt_opt_sep ? strncmpic(ss, vp->name, vp->alt_opt_sep) == 0
+ : strcmpic (ss, vp->name) == 0)
+ break;
+if ((char *)vp >= (char *)verify_type_list + sizeof(verify_type_list))
+ goto BAD_VERIFY;
+
+if (vp->no_options && slash != NULL)
{
- if (slash != NULL) goto NO_OPTIONS;
- if (sender_host_address == NULL) return OK;
- return acl_verify_reverse(user_msgptr, log_msgptr);
+ *log_msgptr = string_sprintf("unexpected '/' found in \"%s\" "
+ "(this verify item has no options)", arg);
+ return ERROR;
}
-
-/* TLS certificate verification is done at STARTTLS time; here we just
-test whether it was successful or not. (This is for optional verification; for
-mandatory verification, the connection doesn't last this long.) */
-
-if (strcmpic(ss, US"certificate") == 0)
+if (!(vp->where_allowed & (1<<where)))
{
- if (slash != NULL) goto NO_OPTIONS;
- if (tls_certificate_verified) return OK;
- *user_msgptr = US"no verified certificate";
- return FAIL;
+ *log_msgptr = string_sprintf("cannot verify %s in ACL for %s", vp->name, acl_wherenames[where]);
+ return ERROR;
}
-
-/* We can test the result of optional HELO verification that might have
-occurred earlier. If not, we can attempt the verification now. */
-
-if (strcmpic(ss, US"helo") == 0)
+switch(vp->value)
{
- if (slash != NULL) goto NO_OPTIONS;
- if (!helo_verified && !helo_verify_failed) smtp_verify_helo();
- return helo_verified? OK : FAIL;
- }
+ case VERIFY_REV_HOST_LKUP:
+ if (sender_host_address == NULL) return OK;
+ return acl_verify_reverse(user_msgptr, log_msgptr);
-/* Do Client SMTP Authorization checks in a separate function, and turn the
-result code into user-friendly strings. */
+ case VERIFY_CERT:
+ /* TLS certificate verification is done at STARTTLS time; here we just
+ test whether it was successful or not. (This is for optional verification; for
+ mandatory verification, the connection doesn't last this long.) */
-if (strcmpic(ss, US"csa") == 0)
- {
- 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];
- }
+ if (tls_in.certificate_verified) return OK;
+ *user_msgptr = US"no verified certificate";
+ return FAIL;
-/* Check that all relevant header lines have the correct syntax. If there is
-a syntax error, we return details of the error to the sender if configured to
-send out full details. (But a "message" setting on the ACL can override, as
-always). */
+ 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 (strcmpic(ss, US"header_syntax") == 0)
- {
- if (slash != NULL) goto NO_OPTIONS;
- if (where != ACL_WHERE_DATA && where != ACL_WHERE_NOTSMTP) goto WRONG_ACL;
- 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);
- return rc;
- }
+ if (!helo_verified && !helo_verify_failed) smtp_verify_helo();
+ return helo_verified? OK : FAIL;
-/* Check that no recipient of this message is "blind", that is, every envelope
-recipient must be mentioned in either To: or Cc:. */
+ case VERIFY_CSA:
+ /* Do Client SMTP Authorization checks in a separate function, and turn the
+ result code into user-friendly strings. */
-if (strcmpic(ss, US"not_blind") == 0)
- {
- if (slash != NULL) goto NO_OPTIONS;
- if (where != ACL_WHERE_DATA && where != ACL_WHERE_NOTSMTP) goto WRONG_ACL;
- rc = verify_check_notblind();
- if (rc != OK)
- {
- *log_msgptr = string_sprintf("bcc recipient detected");
- if (smtp_return_error_details)
+ 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];
+
+ case VERIFY_HDR_SYNTAX:
+ /* Check that all relevant header lines have the correct syntax. If there is
+ a syntax error, we return details of the error to the sender if configured to
+ send out full details. (But a "message" setting on the ACL can override, as
+ 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);
- }
- return rc;
- }
+ return rc;
-/* The remaining verification tests check recipient and sender addresses,
-either from the envelope or from the header. There are a number of
-slash-separated options that are common to all of them. */
+ case VERIFY_NOT_BLIND:
+ /* Check that no recipient of this message is "blind", that is, every envelope
+ recipient must be mentioned in either To: or Cc:. */
+ rc = verify_check_notblind();
+ if (rc != OK)
+ {
+ *log_msgptr = string_sprintf("bcc recipient detected");
+ if (smtp_return_error_details)
+ *user_msgptr = string_sprintf("Rejected after DATA: %s", *log_msgptr);
+ }
+ return rc;
-/* Check that there is at least one verifiable sender address in the relevant
-header lines. This can be followed by callout and defer options, just like
-sender and recipient. */
-
-if (strcmpic(ss, US"header_sender") == 0)
- {
- if (where != ACL_WHERE_DATA && where != ACL_WHERE_NOTSMTP) goto WRONG_ACL;
- verify_header_sender = TRUE;
- }
+ /* The remaining verification tests check recipient and sender addresses,
+ either from the envelope or from the header. There are a number of
+ slash-separated options that are common to all of them. */
-/* Otherwise, first item in verify argument must be "sender" or "recipient".
-In the case of a sender, this can optionally be followed by an address to use
-in place of the actual sender (rare special-case requirement). */
+ case VERIFY_HDR_SNDR:
+ verify_header_sender = TRUE;
+ break;
-else if (strncmpic(ss, US"sender", 6) == 0)
- {
- uschar *s = ss + 6;
- if (where > ACL_WHERE_NOTSMTP)
+ case VERIFY_SNDR:
+ /* In the case of a sender, this can optionally be followed by an address to use
+ in place of the actual sender (rare special-case requirement). */
{
- *log_msgptr = string_sprintf("cannot verify sender in ACL for %s "
- "(only possible for MAIL, RCPT, PREDATA, or DATA)",
- acl_wherenames[where]);
- return ERROR;
- }
- if (*s == 0)
- verify_sender_address = sender_address;
- else
- {
- while (isspace(*s)) s++;
- if (*s++ != '=') goto BAD_VERIFY;
- while (isspace(*s)) s++;
- verify_sender_address = string_copy(s);
- }
- }
-else
- {
- if (strcmpic(ss, US"recipient") != 0) goto BAD_VERIFY;
- if (addr == NULL)
- {
- *log_msgptr = string_sprintf("cannot verify recipient in ACL for %s "
- "(only possible for RCPT)", acl_wherenames[where]);
- return ERROR;
+ uschar *s = ss + 6;
+ if (*s == 0)
+ verify_sender_address = sender_address;
+ else
+ {
+ while (isspace(*s)) s++;
+ if (*s++ != '=') goto BAD_VERIFY;
+ while (isspace(*s)) s++;
+ verify_sender_address = string_copy(s);
+ }
}
+ break;
+
+ case VERIFY_RCPT:
+ break;
}
+
+
/* Remaining items are optional; they apply to sender and recipient
verification, including "header sender" verification. */
uschar buffer[256];
while (isspace(*ss)) ss++;
- /* This callout option handling code has become a mess as new options
- have been added in an ad hoc manner. It should be tidied up into some
- kind of table-driven thing. */
-
while ((opt = string_nextinlist(&ss, &optsep, buffer, sizeof(buffer)))
!= NULL)
{
- if (strcmpic(opt, US"defer_ok") == 0) callout_defer_ok = TRUE;
- else if (strcmpic(opt, US"no_cache") == 0)
- verify_options |= vopt_callout_no_cache;
- else if (strcmpic(opt, US"random") == 0)
- verify_options |= vopt_callout_random;
- else if (strcmpic(opt, US"use_sender") == 0)
- verify_options |= vopt_callout_recipsender;
- else if (strcmpic(opt, US"use_postmaster") == 0)
- verify_options |= vopt_callout_recippmaster;
- else if (strcmpic(opt, US"postmaster") == 0) pm_mailfrom = US"";
- else if (strcmpic(opt, US"fullpostmaster") == 0)
- {
- pm_mailfrom = US"";
- verify_options |= vopt_callout_fullpm;
- }
+ callout_opt_t * op;
+ double period = 1.0F;
- else if (strncmpic(opt, US"mailfrom", 8) == 0)
- {
- if (!verify_header_sender)
- {
- *log_msgptr = string_sprintf("\"mailfrom\" is allowed as a "
- "callout option only for verify=header_sender (detected in ACL "
- "condition \"%s\")", arg);
- return ERROR;
- }
- opt += 8;
- while (isspace(*opt)) opt++;
- if (*opt++ != '=')
- {
- *log_msgptr = string_sprintf("'=' expected after "
- "\"mailfrom\" in ACL condition \"%s\"", arg);
- return ERROR;
- }
- while (isspace(*opt)) opt++;
- se_mailfrom = string_copy(opt);
- }
+ for (op= callout_opt_list; op->name; op++)
+ if (strncmpic(opt, op->name, Ustrlen(op->name)) == 0)
+ break;
- else if (strncmpic(opt, US"postmaster_mailfrom", 19) == 0)
- {
- opt += 19;
+ verify_options |= op->flag;
+ if (op->has_option)
+ {
+ opt += Ustrlen(op->name);
while (isspace(*opt)) opt++;
if (*opt++ != '=')
{
*log_msgptr = string_sprintf("'=' expected after "
- "\"postmaster_mailfrom\" in ACL condition \"%s\"", arg);
- return ERROR;
- }
- while (isspace(*opt)) opt++;
- pm_mailfrom = string_copy(opt);
- }
-
- else if (strncmpic(opt, US"maxwait", 7) == 0)
- {
- opt += 7;
- while (isspace(*opt)) opt++;
- if (*opt++ != '=')
- {
- *log_msgptr = string_sprintf("'=' expected after \"maxwait\" in "
- "ACL condition \"%s\"", arg);
+ "\"%s\" in ACL verify condition \"%s\"", op->name, arg);
return ERROR;
}
while (isspace(*opt)) opt++;
- callout_overall = readconf_readtime(opt, 0, FALSE);
- if (callout_overall < 0)
+ }
+ if (op->timeval)
+ {
+ period = readconf_readtime(opt, 0, FALSE);
+ if (period < 0)
{
*log_msgptr = string_sprintf("bad time value in ACL condition "
"\"verify %s\"", arg);
return ERROR;
}
- }
- else if (strncmpic(opt, US"connect", 7) == 0)
- {
- opt += 7;
- while (isspace(*opt)) opt++;
- if (*opt++ != '=')
- {
- *log_msgptr = string_sprintf("'=' expected after "
- "\"callout_overaall\" in ACL condition \"%s\"", arg);
- return ERROR;
- }
- while (isspace(*opt)) opt++;
- callout_connect = readconf_readtime(opt, 0, FALSE);
- if (callout_connect < 0)
- {
- *log_msgptr = string_sprintf("bad time value in ACL condition "
- "\"verify %s\"", arg);
- return ERROR;
- }
- }
- else /* Plain time is callout connect/command timeout */
- {
- callout = readconf_readtime(opt, 0, FALSE);
- if (callout < 0)
- {
- *log_msgptr = string_sprintf("bad time value in ACL condition "
- "\"verify %s\"", arg);
- return ERROR;
- }
- }
+ }
+
+ switch(op->value)
+ {
+ case CALLOUT_DEFER_OK: callout_defer_ok = TRUE; break;
+ case CALLOUT_POSTMASTER: pm_mailfrom = US""; break;
+ case CALLOUT_FULLPOSTMASTER: pm_mailfrom = US""; break;
+ case CALLOUT_MAILFROM:
+ if (!verify_header_sender)
+ {
+ *log_msgptr = string_sprintf("\"mailfrom\" is allowed as a "
+ "callout option only for verify=header_sender (detected in ACL "
+ "condition \"%s\")", arg);
+ return ERROR;
+ }
+ se_mailfrom = string_copy(opt);
+ break;
+ case CALLOUT_POSTMASTER_MAILFROM: pm_mailfrom = string_copy(opt); break;
+ case CALLOUT_MAXWAIT: callout_overall = period; break;
+ case CALLOUT_CONNECT: callout_connect = period; break;
+ case CALLOUT_TIME: callout = period; break;
+ }
}
}
else
"\"reverse_host_lookup\" at start of ACL condition "
"\"verify %s\"", arg);
return ERROR;
-
-/* Options supplied when not allowed come here */
-
-NO_OPTIONS:
-*log_msgptr = string_sprintf("unexpected '/' found in \"%s\" "
- "(this verify item has no options)", arg);
-return ERROR;
-
-/* Calls in the wrong ACL come here */
-
-WRONG_ACL:
-*log_msgptr = string_sprintf("cannot check header contents in ACL for %s "
- "(only possible in ACL for DATA)", acl_wherenames[where]);
-return ERROR;
}
va_start(ap, format);
if (!string_vformat(buffer, sizeof(buffer), format, ap))
log_write(0, LOG_MAIN|LOG_PANIC_DIE,
- "string_sprintf expansion was longer than %d", sizeof(buffer));
+ "string_sprintf expansion was longer than " SIZE_T_FMT, sizeof(buffer));
va_end(ap);
*log_msgptr = string_sprintf(
"error in arguments to \"ratelimit\" condition: %s", buffer);
else if (strcmpic(ss, US"per_addr") == 0)
{
RATE_SET(mode, PER_RCPT);
- if (where != ACL_WHERE_RCPT) badacl = TRUE, unique = "*";
+ if (where != ACL_WHERE_RCPT) badacl = TRUE, unique = US"*";
else unique = string_sprintf("%s@%s", deliver_localpart, deliver_domain);
}
else if (strncmpic(ss, US"count=", 6) == 0)
anchor = &ratelimiters_cmd;
break;
default:
+ anchor = NULL; /* silence an "unused" complaint */
log_write(0, LOG_MAIN|LOG_PANIC_DIE,
"internal ACL error: unknown ratelimit mode %d", mode);
break;
"discard" verb. */
case ACLC_ACL:
- rc = acl_check_internal(where, addr, arg, level+1, user_msgptr, log_msgptr);
- if (rc == DISCARD && verb != ACL_ACCEPT && verb != ACL_DISCARD)
- {
- *log_msgptr = string_sprintf("nested ACL returned \"discard\" for "
- "\"%s\" command (only allowed with \"accept\" or \"discard\")",
- verbs[verb]);
- return ERROR;
- }
+ rc = acl_check_wargs(where, addr, arg, level+1, user_msgptr, log_msgptr);
+ if (rc == DISCARD && verb != ACL_ACCEPT && verb != ACL_DISCARD)
+ {
+ *log_msgptr = string_sprintf("nested ACL returned \"discard\" for "
+ "\"%s\" command (only allowed with \"accept\" or \"discard\")",
+ verbs[verb]);
+ return ERROR;
+ }
break;
case ACLC_AUTHENTICATED:
break;
#endif
+ case CONTROL_DSCP:
+ if (*p == '/')
+ {
+ int fd, af, level, optname, value;
+ /* If we are acting on stdin, the setsockopt may fail if stdin is not
+ a socket; we can accept that, we'll just debug-log failures anyway. */
+ fd = fileno(smtp_in);
+ af = ip_get_address_family(fd);
+ if (af < 0)
+ {
+ HDEBUG(D_acl)
+ debug_printf("smtp input is probably not a socket [%s], not setting DSCP\n",
+ strerror(errno));
+ break;
+ }
+ if (dscp_lookup(p+1, af, &level, &optname, &value))
+ {
+ if (setsockopt(fd, level, optname, &value, sizeof(value)) < 0)
+ {
+ HDEBUG(D_acl) debug_printf("failed to set input DSCP[%s]: %s\n",
+ p+1, strerror(errno));
+ }
+ else
+ {
+ HDEBUG(D_acl) debug_printf("set input DSCP to \"%s\"\n", p+1);
+ }
+ }
+ else
+ {
+ *log_msgptr = string_sprintf("unrecognised DSCP value in \"control=%s\"", arg);
+ return ERROR;
+ }
+ }
+ else
+ {
+ *log_msgptr = string_sprintf("syntax error in \"control=%s\"", arg);
+ return ERROR;
+ }
+ break;
+
case CONTROL_ERROR:
return ERROR;
case CONTROL_SUPPRESS_LOCAL_FIXUPS:
suppress_local_fixups = TRUE;
break;
+
+ case CONTROL_CUTTHROUGH_DELIVERY:
+ if (deliver_freeze)
+ {
+ *log_msgptr = string_sprintf("\"control=%s\" on frozen item", arg);
+ return ERROR;
+ }
+ if (queue_only_policy)
+ {
+ *log_msgptr = string_sprintf("\"control=%s\" on queue-only item", arg);
+ return ERROR;
+ }
+ cutthrough_delivery = TRUE;
+ break;
}
break;
writing is poorly documented. */
case ACLC_ENCRYPTED:
- if (tls_cipher == NULL) rc = FAIL; else
+ if (tls_in.cipher == NULL) rc = FAIL; else
{
uschar *endcipher = NULL;
- uschar *cipher = Ustrchr(tls_cipher, ':');
- if (cipher == NULL) cipher = tls_cipher; else
+ uschar *cipher = Ustrchr(tls_in.cipher, ':');
+ if (cipher == NULL) cipher = tls_in.cipher; else
{
endcipher = Ustrchr(++cipher, ':');
if (endcipher != NULL) *endcipher = 0;
break;
#endif
+ case ACLC_REMOVE_HEADER:
+ setup_remove_header(arg);
+ break;
+
case ACLC_SENDER_DOMAINS:
{
uschar *sdomain;
switch (cond)
{
case DEFER:
- HDEBUG(D_acl) debug_printf("%s: condition test deferred\n", verbs[acl->verb]);
+ HDEBUG(D_acl) debug_printf("%s: condition test deferred in %s\n", verbs[acl->verb], acl_name);
if (basic_errno != ERRNO_CALLOUTDEFER)
{
if (search_error_message != NULL && *search_error_message != 0)
default: /* Paranoia */
case ERROR:
- HDEBUG(D_acl) debug_printf("%s: condition test error\n", verbs[acl->verb]);
+ HDEBUG(D_acl) debug_printf("%s: condition test error in %s\n", verbs[acl->verb], acl_name);
return ERROR;
case OK:
- HDEBUG(D_acl) debug_printf("%s: condition test succeeded\n",
- verbs[acl->verb]);
+ HDEBUG(D_acl) debug_printf("%s: condition test succeeded in %s\n",
+ verbs[acl->verb], acl_name);
break;
case FAIL:
- HDEBUG(D_acl) debug_printf("%s: condition test failed\n", verbs[acl->verb]);
+ HDEBUG(D_acl) debug_printf("%s: condition test failed in %s\n", verbs[acl->verb], acl_name);
break;
/* DISCARD and DROP can happen only from a nested ACL condition, and
DISCARD can happen only for an "accept" or "discard" verb. */
case DISCARD:
- HDEBUG(D_acl) debug_printf("%s: condition test yielded \"discard\"\n",
- verbs[acl->verb]);
+ HDEBUG(D_acl) debug_printf("%s: condition test yielded \"discard\" in %s\n",
+ verbs[acl->verb], acl_name);
break;
case FAIL_DROP:
- HDEBUG(D_acl) debug_printf("%s: condition test yielded \"drop\"\n",
- verbs[acl->verb]);
+ HDEBUG(D_acl) debug_printf("%s: condition test yielded \"drop\" in %s\n",
+ verbs[acl->verb], acl_name);
break;
}
}
+
+
+/* Same args as acl_check_internal() above, but the string s is
+the name of an ACL followed optionally by up to 9 space-separated arguments.
+The name and args are separately expanded. Args go into $acl_arg globals. */
+static int
+acl_check_wargs(int where, address_item *addr, uschar *s, int level,
+ uschar **user_msgptr, uschar **log_msgptr)
+{
+uschar * tmp;
+uschar * tmp_arg[9]; /* must match acl_arg[] */
+uschar * sav_arg[9]; /* must match acl_arg[] */
+int sav_narg;
+uschar * name;
+int i;
+int ret;
+
+if (!(tmp = string_dequote(&s)) || !(name = expand_string(tmp)))
+ goto bad;
+
+for (i = 0; i < 9; i++)
+ {
+ while (*s && isspace(*s)) s++;
+ if (!*s) break;
+ if (!(tmp = string_dequote(&s)) || !(tmp_arg[i] = expand_string(tmp)))
+ {
+ tmp = name;
+ goto bad;
+ }
+ }
+
+sav_narg = acl_narg;
+acl_narg = i;
+for (i = 0; i < acl_narg; i++)
+ {
+ sav_arg[i] = acl_arg[i];
+ acl_arg[i] = tmp_arg[i];
+ }
+while (i < 9)
+ {
+ sav_arg[i] = acl_arg[i];
+ acl_arg[i++] = NULL;
+ }
+
+ret = acl_check_internal(where, addr, name, level, user_msgptr, log_msgptr);
+
+acl_narg = sav_narg;
+for (i = 0; i < 9; i++) acl_arg[i] = sav_arg[i];
+return ret;
+
+bad:
+if (expand_string_forcedfail) return ERROR;
+*log_msgptr = string_sprintf("failed to expand ACL string \"%s\": %s",
+ tmp, expand_string_message);
+return search_find_defer?DEFER:ERROR;
+}
+
+
+
/*************************************************
* Check access using an ACL *
*************************************************/
+/* Alternate interface for ACL, used by expansions */
+int
+acl_eval(int where, uschar *s, uschar **user_msgptr, uschar **log_msgptr)
+{
+address_item adb;
+address_item *addr = NULL;
+
+*user_msgptr = *log_msgptr = NULL;
+sender_verified_failed = NULL;
+ratelimiters_cmd = NULL;
+log_reject_target = LOG_MAIN|LOG_REJECT;
+
+if (where == ACL_WHERE_RCPT)
+ {
+ adb = address_defaults;
+ addr = &adb;
+ addr->address = expand_string(US"$local_part@$domain");
+ addr->domain = deliver_domain;
+ addr->local_part = deliver_localpart;
+ addr->cc_local_part = deliver_localpart;
+ addr->lc_local_part = deliver_localpart;
+ }
+
+return acl_check_internal(where, addr, s, 0, user_msgptr, log_msgptr);
+}
+
+
+
/* This is the external interface for ACL checks. It sets up an address and the
expansions for $domain and $local_part when called after RCPT, then calls
acl_check_internal() to do the actual work.
DEFER can't tell at the moment
ERROR disaster
*/
+int acl_where = ACL_WHERE_UNKNOWN;
int
acl_check(int where, uschar *recipient, uschar *s, uschar **user_msgptr,
deliver_localpart = addr->local_part;
}
+acl_where = where;
rc = acl_check_internal(where, addr, s, 0, user_msgptr, log_msgptr);
+acl_where = ACL_WHERE_UNKNOWN;
+
+/* Cutthrough - if requested,
+and WHERE_RCPT and not yet opened conn as result of recipient-verify,
+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.
+
+Initial implementation: dual-write to spool.
+Assume the rxd datastream is now being copied byte-for-byte to an open cutthrough connection.
+
+Cease cutthrough copy on rxd final dot; do not send one.
+
+On a data acl, if not accept and a cutthrough conn is open, hard-close it (no SMTP niceness).
+
+On data acl accept, terminate the dataphase on an open cutthrough conn. If accepted or
+perm-rejected, reflect that to the original sender - and dump the spooled copy.
+If temp-reject, close the conn (and keep the spooled copy).
+If conn-failure, no action (and keep the spooled copy).
+*/
+switch (where)
+{
+case ACL_WHERE_RCPT:
+ if( rcpt_count > 1 )
+ cancel_cutthrough_connection("more than one recipient");
+ else if (rc == OK && cutthrough_delivery && cutthrough_fd < 0)
+ open_cutthrough_connection(addr);
+ break;
+
+case ACL_WHERE_PREDATA:
+ if( rc == OK )
+ cutthrough_predata();
+ else
+ cancel_cutthrough_connection("predata acl not ok");
+ break;
+
+case ACL_WHERE_QUIT:
+case ACL_WHERE_NOTQUIT:
+ cancel_cutthrough_connection("quit or notquit");
+ break;
+
+default:
+ break;
+}
deliver_domain = deliver_localpart = deliver_address_data =
sender_address_data = NULL;
}
-
/*************************************************
* Create ACL variable *
*************************************************/
git://git.exim.org / users / heiko / exim.git / blobdiff