-/* $Cambridge: exim/src/src/receive.c,v 1.55 2010/06/05 11:13:30 pdp Exp $ */
-
/*************************************************
* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2009 */
+/* Copyright (c) University of Cambridge 1995 - 2016 */
/* See the file NOTICE for conditions of use and distribution. */
/* Code for receiving a message and setting up spool files. */
extern int dcc_ok;
#endif
+#ifdef EXPERIMENTAL_DMARC
+# include "dmarc.h"
+#endif /* EXPERIMENTAL_DMARC */
+
/*************************************************
* Local static variables *
*************************************************/
qnewsender = (Ustrchr(newsender, '@') != NULL)?
newsender : string_sprintf("%s@%s", newsender, qualify_domain_sender);
return
- match_address_list(qnewsender, TRUE, TRUE, &untrusted_set_sender, NULL, -1,
+ match_address_list(qnewsender, TRUE, TRUE, CUSS &untrusted_set_sender, NULL, -1,
0, NULL) == OK;
}
else
{
int sep = ':'; /* Not variable - outside scripts use */
- uschar *p = log_file_path;
+ const uschar *p = log_file_path;
name = US"log";
/* An empty log_file_path means "use the default". This is the same as an
empty item in a list. */
if (*p == 0) p = US":";
- while ((path = string_nextinlist(&p, &sep, buffer, sizeof(buffer))) != NULL)
- {
- if (Ustrcmp(path, "syslog") != 0) break;
- }
+ while ((path = string_nextinlist(&p, &sep, buffer, sizeof(buffer))))
+ if (Ustrcmp(path, "syslog") != 0)
+ break;
if (path == NULL) /* No log files */
{
void
receive_bomb_out(uschar *reason, uschar *msg)
{
+ static BOOL already_bombing_out;
+/* The smtp_notquit_exit() below can call ACLs which can trigger recursive
+timeouts, if someone has something slow in their quit ACL. Since the only
+things we should be doing are to close down cleanly ASAP, on the second
+pass we also close down stuff that might be opened again, before bypassing
+the ACL call and exiting. */
+
/* If spool_name is set, it contains the name of the data file that is being
written. Unlink it before closing so that it cannot be picked up by a delivery
process. Ensure that any header file is also removed. */
-if (spool_name[0] != 0)
+if (spool_name[0] != '\0')
{
Uunlink(spool_name);
spool_name[Ustrlen(spool_name) - 1] = 'H';
Uunlink(spool_name);
+ spool_name[0] = '\0';
}
/* Now close the file if it is open, either as a fd or a stream. */
-if (data_file != NULL) (void)fclose(data_file);
- else if (data_fd >= 0) (void)close(data_fd);
+if (data_file != NULL)
+ {
+ (void)fclose(data_file);
+ data_file = NULL;
+} else if (data_fd >= 0) {
+ (void)close(data_fd);
+ data_fd = -1;
+ }
/* Attempt to close down an SMTP connection tidily. For non-batched SMTP, call
smtp_notquit_exit(), which runs the NOTQUIT ACL, if present, and handles the
SMTP response. */
-if (smtp_input)
+if (!already_bombing_out)
{
- if (smtp_batched_input)
- moan_smtp_batch(NULL, "421 %s - message abandoned", msg); /* No return */
- smtp_notquit_exit(reason, US"421", US"%s %s - closing connection.",
- smtp_active_hostname, msg);
+ already_bombing_out = TRUE;
+ if (smtp_input)
+ {
+ if (smtp_batched_input)
+ moan_smtp_batch(NULL, "421 %s - message abandoned", msg); /* No return */
+ smtp_notquit_exit(reason, US"421", US"%s %s - closing connection.",
+ smtp_active_hostname, msg);
+ }
}
/* Exit from the program (non-BSMTP cases) */
/* reset optin string pointer for next recipient */
bmi_current_optin = NULL;
#endif
+recipients_list[recipients_count].orcpt = NULL;
+recipients_list[recipients_count].dsn_flags = 0;
recipients_list[recipients_count++].errors_to = NULL;
}
+/*************************************************
+* Send user response message *
+*************************************************/
+
+/* This function is passed a default response code and a user message. It calls
+smtp_message_code() to check and possibly modify the response code, and then
+calls smtp_respond() to transmit the response. I put this into a function
+just to avoid a lot of repetition.
+
+Arguments:
+ code the response code
+ user_msg the user message
+
+Returns: nothing
+*/
+
+#ifndef DISABLE_PRDR
+static void
+smtp_user_msg(uschar *code, uschar *user_msg)
+{
+int len = 3;
+smtp_message_code(&code, &len, &user_msg, NULL, TRUE);
+smtp_respond(code, len, TRUE, user_msg);
+}
+#endif
+
+
+
+
+
/*************************************************
* Remove a recipient from the list *
*************************************************/
case 1: /* After written "\n" */
if (ch == '.') { ch_state = 3; continue; }
+ if (ch == '\r') { ch_state = 2; continue; }
if (ch != '\n') ch_state = 0; else linelength = -1;
break;
read_message_data_smtp(FILE *fout)
{
int ch_state = 0;
-register int ch;
+int ch;
register int linelength = 0;
while ((ch = (receive_getc)()) != EOF)
{
message_size++;
if (fout != NULL && fputc('\n', fout) == EOF) return END_WERROR;
+ (void) cutthrough_put_nl();
if (ch != '\r') ch_state = 1; else continue;
}
break;
ch_state = 4;
continue;
}
- ch_state = 1; /* The dot itself is removed */
+ /* The dot was removed at state 3. For a doubled dot, here, reinstate
+ it to cutthrough. The current ch, dot or not, is passed both to cutthrough
+ and to file below. */
+ if (ch == '.')
+ {
+ uschar c= ch;
+ (void) cutthrough_puts(&c, 1);
+ }
+ ch_state = 1;
break;
case 4: /* After [CR] LF . CR */
message_size++;
body_linecount++;
if (fout != NULL && fputc('\n', fout) == EOF) return END_WERROR;
+ (void) cutthrough_put_nl();
if (ch == '\r')
{
ch_state = 2;
if (fputc(ch, fout) == EOF) return END_WERROR;
if (message_size > thismessage_size_limit) return END_SIZE;
}
+ if(ch == '\n')
+ (void) cutthrough_put_nl();
+ else
+ {
+ uschar c= ch;
+ (void) cutthrough_puts(&c, 1);
+ }
}
/* Fall through here if EOF encountered. This indicates some kind of error,
error_block eblock;
eblock.next = NULL;
eblock.text1 = text1;
+ eblock.text2 = US"";
if (!moan_to_sender(errcode, &eblock, hptr, f, FALSE))
error_rc = EXIT_FAILURE;
}
-else fprintf(stderr, "exim: %s%s\n", text2, text1); /* Sic */
+else
+ fprintf(stderr, "exim: %s%s\n", text2, text1); /* Sic */
(void)fclose(f);
exim_exit(error_rc);
}
*/
static void
-add_acl_headers(uschar *acl_name)
+add_acl_headers(int where, uschar *acl_name)
{
header_line *h, *next;
header_line *last_received = NULL;
+switch(where)
+ {
+ case ACL_WHERE_DKIM:
+ case ACL_WHERE_MIME:
+ case ACL_WHERE_DATA:
+ if (cutthrough.fd >= 0 && (acl_removed_headers || acl_added_headers))
+ {
+ log_write(0, LOG_MAIN|LOG_PANIC, "Header modification in data ACLs"
+ " will not take effect on cutthrough deliveries");
+ return;
+ }
+ }
+
+if (acl_removed_headers != NULL)
+ {
+ DEBUG(D_receive|D_acl) debug_printf(">>Headers removed by %s ACL:\n", acl_name);
+
+ for (h = header_list; h != NULL; h = h->next) if (h->type != htype_old)
+ {
+ const uschar * list = acl_removed_headers;
+ int sep = ':'; /* This is specified as a colon-separated list */
+ uschar *s;
+ uschar buffer[128];
+
+ while ((s = string_nextinlist(&list, &sep, buffer, sizeof(buffer))))
+ if (header_testname(h, s, Ustrlen(s), FALSE))
+ {
+ h->type = htype_old;
+ DEBUG(D_receive|D_acl) debug_printf(" %s", h->text);
+ }
+ }
+ acl_removed_headers = NULL;
+ DEBUG(D_receive|D_acl) debug_printf(">>\n");
+ }
+
if (acl_added_headers == NULL) return;
DEBUG(D_receive|D_acl) debug_printf(">>Headers added by %s ACL:\n", acl_name);
*/
static uschar *
-add_host_info_for_log(uschar *s, int *sizeptr, int *ptrptr)
+add_host_info_for_log(uschar * s, int * sizeptr, int * ptrptr)
{
-if (sender_fullhost != NULL)
+if (sender_fullhost)
{
+ if (LOGGING(dnssec) && sender_host_dnssec) /*XXX sender_helo_dnssec? */
+ s = string_cat(s, sizeptr, ptrptr, US" DS");
s = string_append(s, sizeptr, ptrptr, 2, US" H=", sender_fullhost);
- if ((log_extra_selector & LX_incoming_interface) != 0 &&
- interface_address != NULL)
+ if (LOGGING(incoming_interface) && interface_address != NULL)
{
- uschar *ss = string_sprintf(" I=[%s]:%d", interface_address,
- interface_port);
- s = string_cat(s, sizeptr, ptrptr, ss, Ustrlen(ss));
+ s = string_cat(s, sizeptr, ptrptr,
+ string_sprintf(" I=[%s]:%d", interface_address, interface_port));
}
}
if (sender_ident != NULL)
if (rc == OK)
{
uschar temp_path[1024];
- int n;
- struct dirent *entry;
- DIR *tempdir;
+ struct dirent * entry;
+ DIR * tempdir;
- (void)string_format(temp_path, 1024, "%s/scan/%s", spool_directory,
- message_id);
+ (void) string_format(temp_path, sizeof(temp_path), "%s/scan/%s",
+ spool_directory, message_id);
tempdir = opendir(CS temp_path);
- n = 0;
- do
+ for (;;)
{
- entry = readdir(tempdir);
- if (entry == NULL) break;
- if (strncmpic(US entry->d_name,US"__rfc822_",9) == 0)
+ if (!(entry = readdir(tempdir)))
+ break;
+ if (strncmpic(US entry->d_name, US"__rfc822_", 9) == 0)
{
- (void)string_format(rfc822_file_path, 2048,"%s/scan/%s/%s", spool_directory, message_id, entry->d_name);
- debug_printf("RFC822 attachment detected: running MIME ACL for '%s'\n", rfc822_file_path);
+ (void) string_format(rfc822_file_path, sizeof(rfc822_file_path),
+ "%s/scan/%s/%s", spool_directory, message_id, entry->d_name);
+ debug_printf("RFC822 attachment detected: running MIME ACL for '%s'\n",
+ rfc822_file_path);
break;
}
- } while (1);
+ }
closedir(tempdir);
- if (entry != NULL)
+ if (entry)
{
- mbox_file = Ufopen(rfc822_file_path,"rb");
- if (mbox_file == NULL)
+ if ((mbox_file = Ufopen(rfc822_file_path, "rb")))
{
- log_write(0, LOG_PANIC,
- "acl_smtp_mime: can't open RFC822 spool file, skipping.");
- unlink(CS rfc822_file_path);
- goto END_MIME_ACL;
+ /* set RFC822 expansion variable */
+ mime_is_rfc822 = 1;
+ mime_part_count_buffer = mime_part_count;
+ goto MIME_ACL_CHECK;
}
- /* set RFC822 expansion variable */
- mime_is_rfc822 = 1;
- mime_part_count_buffer = mime_part_count;
- goto MIME_ACL_CHECK;
+ log_write(0, LOG_PANIC,
+ "acl_smtp_mime: can't open RFC822 spool file, skipping.");
+ unlink(CS rfc822_file_path);
}
}
END_MIME_ACL:
-add_acl_headers(US"MIME");
+add_acl_headers(ACL_WHERE_MIME, US"MIME");
if (rc == DISCARD)
{
recipients_count = 0;
#ifdef EXPERIMENTAL_DCC
dcc_ok = 0;
#endif
- if (smtp_handle_acl_fail(ACL_WHERE_MIME, rc, user_msg, log_msg) != 0)
- *smtp_yield_ptr = FALSE; /* No more messsages after dropped connection */
- *smtp_reply_ptr = US""; /* Indicate reply already sent */
+ if ( smtp_input
+ && smtp_handle_acl_fail(ACL_WHERE_MIME, rc, user_msg, log_msg) != 0)
+ {
+ *smtp_yield_ptr = FALSE; /* No more messages after dropped connection */
+ *smtp_reply_ptr = US""; /* Indicate reply already sent */
+ }
message_id[0] = 0; /* Indicate no message accepted */
return FALSE; /* Cause skip to end of receive function */
}
#endif /* WITH_CONTENT_SCAN */
+
+void
+received_header_gen(void)
+{
+uschar *received;
+uschar *timestamp;
+header_line *received_header= header_list;
+
+timestamp = expand_string(US"${tod_full}");
+if (recipients_count == 1) received_for = recipients_list[0].address;
+received = expand_string(received_header_text);
+received_for = NULL;
+
+if (!received)
+ {
+ if(spool_name[0] != 0)
+ Uunlink(spool_name); /* Lose the data file */
+ log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Expansion of \"%s\" "
+ "(received_header_text) failed: %s", string_printing(received_header_text),
+ expand_string_message);
+ }
+
+/* The first element on the header chain is reserved for the Received header,
+so all we have to do is fill in the text pointer, and set the type. However, if
+the result of the expansion is an empty string, we leave the header marked as
+"old" so as to refrain from adding a Received header. */
+
+if (received[0] == 0)
+ {
+ received_header->text = string_sprintf("Received: ; %s\n", timestamp);
+ received_header->type = htype_old;
+ }
+else
+ {
+ received_header->text = string_sprintf("%s; %s\n", received, timestamp);
+ received_header->type = htype_received;
+ }
+
+received_header->slen = Ustrlen(received_header->text);
+
+DEBUG(D_receive) debug_printf(">>Generated Received: header line\n%c %s",
+ received_header->type, received_header->text);
+}
+
+
+
/*************************************************
* Receive message *
*************************************************/
both. The flag sender_local is true for locally generated messages. The flag
submission_mode is true if an ACL has obeyed "control = submission". The flag
suppress_local_fixups is true if an ACL has obeyed "control =
-suppress_local_fixups". The flag smtp_input is true if the message is to be
+suppress_local_fixups" or -G was passed on the command-line.
+The flag smtp_input is true if the message is to be
handled using SMTP conventions about termination and lines starting with dots.
For non-SMTP messages, dot_ends is true for dot-terminated messages.
uschar *resent_prefix = US"";
uschar *blackholed_by = NULL;
uschar *blackhole_log_msg = US"";
+enum {NOT_TRIED, TMP_REJ, PERM_REJ, ACCEPTED} cutthrough_done = NOT_TRIED;
flock_t lock_data;
error_block *bad_addresses = NULL;
header_line *msgid_header = NULL;
header_line *received_header;
+#ifdef EXPERIMENTAL_DMARC
+int dmarc_up = 0;
+#endif /* EXPERIMENTAL_DMARC */
+
/* Variables for use when building the Received: header. */
-uschar *received;
uschar *timestamp;
int tslen;
search_tidyup();
+/* Extracting the recipient list from an input file is incompatible with
+cutthrough delivery with the no-spool option. It shouldn't be possible
+to set up the combination, but just in case kill any ongoing connection. */
+if (extract_recip || !smtp_input)
+ cancel_cutthrough_connection("not smtp input");
+
/* Initialize the chain of headers by setting up a place-holder for Received:
header. Temporarily mark it as "old", i.e. not to be used. We keep header_last
pointing to the end of the chain to make adding headers simple. */
if (smtp_input && !smtp_batched_input && !dkim_disable_verify) dkim_exim_verify_init();
#endif
+#ifdef EXPERIMENTAL_DMARC
+/* initialize libopendmarc */
+dmarc_up = dmarc_init();
+#endif
+
/* Remember the time of reception. Exim uses time+pid for uniqueness of message
ids, and fractions of a second are required. See the comments that precede the
message id creation below. */
from_header = h;
if (!smtp_input)
{
+ int len;
uschar *s = Ustrchr(h->text, ':') + 1;
while (isspace(*s)) s++;
- if (strncmpic(s, originator_login, h->slen - (s - h->text) - 1) == 0)
+ len = h->slen - (s - h->text) - 1;
+ if (Ustrlen(originator_login) == len &&
+ strncmpic(s, originator_login, len) == 0)
{
uschar *name = is_resent? US"Resent-From" : US"From";
header_add(htype_from, "%s: %s <%s@%s>\n", name, originator_name,
pp = recipient = store_get(ss - s + 1);
for (p = s; p < ss; p++) if (*p != '\n') *pp++ = *p;
*pp = 0;
+
+#ifdef SUPPORT_I18N
+ {
+ BOOL b = allow_utf8_domains;
+ allow_utf8_domains = TRUE;
+#endif
recipient = parse_extract_address(recipient, &errmess, &start, &end,
&domain, FALSE);
+#ifdef SUPPORT_I18N
+ if (string_is_utf8(recipient))
+ message_smtputf8 = TRUE;
+ else
+ allow_utf8_domains = b;
+ }
+#endif
+
/* Keep a list of all the bad addresses so we can send a single
error message at the end. However, an empty address is not an error;
just ignore it. This can come from an empty group list like
rewriting. Must copy the count, because later ACLs and the local_scan()
function may mess with the real recipients. */
-if ((log_extra_selector & LX_received_recipients) != 0)
+if (LOGGING(received_recipients))
{
raw_recipients = store_get(recipients_count * sizeof(uschar *));
for (i = 0; i < recipients_count; i++)
}
}
-
/* If there are any rewriting rules, apply them to the sender address, unless
it has already been rewritten as part of verification for SMTP input. */
return message_ended == END_DOT;
}
+/* Cutthrough delivery:
+We have to create the Received header now rather than at the end of reception,
+so the timestamp behaviour is a change to the normal case.
+XXX Ensure this gets documented XXX.
+Having created it, send the headers to the destination. */
+if (cutthrough.fd >= 0)
+ {
+ if (received_count > received_headers_max)
+ {
+ cancel_cutthrough_connection("too many headers");
+ if (smtp_input) receive_swallow_smtp(); /* Swallow incoming SMTP */
+ log_write(0, LOG_MAIN|LOG_REJECT, "rejected from <%s>%s%s%s%s: "
+ "Too many \"Received\" headers",
+ sender_address,
+ (sender_fullhost == NULL)? "" : " H=",
+ (sender_fullhost == NULL)? US"" : sender_fullhost,
+ (sender_ident == NULL)? "" : " U=",
+ (sender_ident == NULL)? US"" : sender_ident);
+ message_id[0] = 0; /* Indicate no message accepted */
+ smtp_reply = US"550 Too many \"Received\" headers - suspected mail loop";
+ goto TIDYUP; /* Skip to end of function */
+ }
+ received_header_gen();
+ add_acl_headers(ACL_WHERE_RCPT, US"MAIL or RCPT");
+ (void) cutthrough_headers_send();
+ }
+
+
/* Open a new spool file for the data portion of the message. We need
to access it both via a file descriptor and a stream. Try to make the
directory if it isn't there. Note re use of sprintf: spool_directory
/* Make sure the file's group is the Exim gid, and double-check the mode
because the group setting doesn't always get set automatically. */
-(void)fchown(data_fd, exim_uid, exim_gid);
+if (fchown(data_fd, exim_uid, exim_gid))
+ log_write(0, LOG_MAIN|LOG_PANIC_DIE,
+ "Failed setting ownership on spool file %s: %s",
+ spool_name, strerror(errno));
(void)fchmod(data_fd, SPOOL_MODE);
/* We now have data file open. Build a stream for it and lock it. We lock only
{
uschar *s = next->text;
int len = next->slen;
- (void)fwrite(s, 1, len, data_file);
+ len = fwrite(s, 1, len, data_file); len = len; /* compiler quietening */
body_linecount++; /* Assumes only 1 line */
}
if (smtp_input && message_ended == END_EOF)
{
Uunlink(spool_name); /* Lose data file when closed */
+ cancel_cutthrough_connection("sender closed connection");
message_id[0] = 0; /* Indicate no message accepted */
smtp_reply = handle_lost_connection(US"");
smtp_yield = FALSE;
if (message_ended == END_SIZE)
{
Uunlink(spool_name); /* Lose the data file when closed */
+ cancel_cutthrough_connection("mail too big");
if (smtp_input) receive_swallow_smtp(); /* Swallow incoming SMTP */
log_write(L_size_reject, LOG_MAIN|LOG_REJECT, "rejected from <%s>%s%s%s%s: "
log_write(0, LOG_MAIN, "Message abandoned: %s", msg);
Uunlink(spool_name); /* Lose the data file */
+ cancel_cutthrough_connection("error writing spoolfile");
if (smtp_input)
{
Note: the checking for too many Received: headers is handled by the delivery
code. */
+/*XXX eventually add excess Received: check for cutthrough case back when classifying them */
-timestamp = expand_string(US"${tod_full}");
-if (recipients_count == 1) received_for = recipients_list[0].address;
-received = expand_string(received_header_text);
-received_for = NULL;
-
-if (received == NULL)
+if (received_header->text == NULL) /* Non-cutthrough case */
{
- Uunlink(spool_name); /* Lose the data file */
- log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Expansion of \"%s\" "
- "(received_header_text) failed: %s", string_printing(received_header_text),
- expand_string_message);
- }
-
-/* The first element on the header chain is reserved for the Received header,
-so all we have to do is fill in the text pointer, and set the type. However, if
-the result of the expansion is an empty string, we leave the header marked as
-"old" so as to refrain from adding a Received header. */
-
-if (received[0] == 0)
- {
- received_header->text = string_sprintf("Received: ; %s\n", timestamp);
- received_header->type = htype_old;
- }
-else
- {
- received_header->text = string_sprintf("%s; %s\n", received, timestamp);
- received_header->type = htype_received;
- }
+ received_header_gen();
-received_header->slen = Ustrlen(received_header->text);
+ /* Set the value of message_body_size for the DATA ACL and for local_scan() */
-DEBUG(D_receive) debug_printf(">>Generated Received: header line\n%c %s",
- received_header->type, received_header->text);
+ message_body_size = (fstat(data_fd, &statbuf) == 0)?
+ statbuf.st_size - SPOOL_DATA_START_OFFSET : -1;
-/* Set the value of message_body_size for the DATA ACL and for local_scan() */
+ /* If an ACL from any RCPT commands set up any warning headers to add, do so
+ now, before running the DATA ACL. */
-message_body_size = (fstat(data_fd, &statbuf) == 0)?
- statbuf.st_size - SPOOL_DATA_START_OFFSET : -1;
-
-/* If an ACL from any RCPT commands set up any warning headers to add, do so
-now, before running the DATA ACL. */
-
-add_acl_headers(US"MAIL or RCPT");
+ add_acl_headers(ACL_WHERE_RCPT, US"MAIL or RCPT");
+ }
+else
+ message_body_size = (fstat(data_fd, &statbuf) == 0)?
+ statbuf.st_size - SPOOL_DATA_START_OFFSET : -1;
/* If an ACL is specified for checking things at this stage of reception of a
message, run it, unless all the recipients were removed by "discard" in earlier
else
{
int sep = 0;
- uschar *ptr = dkim_verify_signers_expanded;
+ const uschar *ptr = dkim_verify_signers_expanded;
uschar *item = NULL;
uschar *seen_items = NULL;
int seen_items_size = 0;
rc = OK;
while ((item = string_nextinlist(&ptr, &sep,
itembuf,
- sizeof(itembuf))) != NULL)
+ sizeof(itembuf))))
{
/* Prevent running ACL for an empty item */
if (!item || (item[0] == '\0')) continue;
- /* Only run ACL once for each domain or identity, no matter how often it
- appears in the expanded list. */
- if (seen_items != NULL)
+
+ /* Only run ACL once for each domain or identity,
+ no matter how often it appears in the expanded list. */
+ if (seen_items)
{
uschar *seen_item = NULL;
uschar seen_item_buf[256];
- uschar *seen_items_list = seen_items;
- int seen_this_item = 0;
-
+ const uschar *seen_items_list = seen_items;
+ BOOL seen_this_item = FALSE;
+
while ((seen_item = string_nextinlist(&seen_items_list, &sep,
seen_item_buf,
- sizeof(seen_item_buf))) != NULL)
- {
- if (Ustrcmp(seen_item,item) == 0)
- {
- seen_this_item = 1;
- break;
- }
- }
-
- if (seen_this_item > 0)
+ sizeof(seen_item_buf))))
+ if (Ustrcmp(seen_item,item) == 0)
+ {
+ seen_this_item = TRUE;
+ break;
+ }
+
+ if (seen_this_item)
{
DEBUG(D_receive)
- debug_printf("acl_smtp_dkim: skipping signer %s, already seen\n", item);
+ debug_printf("acl_smtp_dkim: skipping signer %s, "
+ "already seen\n", item);
continue;
}
-
- seen_items = string_append(seen_items,&seen_items_size,&seen_items_offset,1,":");
+
+ seen_items = string_append(seen_items, &seen_items_size,
+ &seen_items_offset, 1, ":");
}
- seen_items = string_append(seen_items,&seen_items_size,&seen_items_offset,1,item);
+ seen_items = string_append(seen_items, &seen_items_size,
+ &seen_items_offset, 1, item);
seen_items[seen_items_offset] = '\0';
DEBUG(D_receive)
- debug_printf("calling acl_smtp_dkim for dkim_cur_signer=%s\n", item);
+ debug_printf("calling acl_smtp_dkim for dkim_cur_signer=%s\n",
+ item);
dkim_exim_acl_setup(item);
- rc = acl_check(ACL_WHERE_DKIM, NULL, acl_smtp_dkim, &user_msg, &log_msg);
+ rc = acl_check(ACL_WHERE_DKIM, NULL, acl_smtp_dkim,
+ &user_msg, &log_msg);
if (rc != OK)
- {
- DEBUG(D_receive)
- debug_printf("acl_smtp_dkim: acl_check returned %d on %s, skipping remaining items\n", rc, item);
- break;
- }
+ {
+ DEBUG(D_receive)
+ debug_printf("acl_smtp_dkim: acl_check returned %d on %s, "
+ "skipping remaining items\n", rc, item);
+ cancel_cutthrough_connection("dkim acl not ok");
+ break;
+ }
}
- add_acl_headers(US"DKIM");
+ add_acl_headers(ACL_WHERE_DKIM, US"DKIM");
if (rc == DISCARD)
{
recipients_count = 0;
{
Uunlink(spool_name);
if (smtp_handle_acl_fail(ACL_WHERE_DKIM, rc, user_msg, log_msg) != 0)
- smtp_yield = FALSE; /* No more messsages after dropped connection */
+ smtp_yield = FALSE; /* No more messages after dropped connection */
smtp_reply = US""; /* Indicate reply already sent */
message_id[0] = 0; /* Indicate no message accepted */
goto TIDYUP; /* Skip to end of function */
goto TIDYUP;
#endif /* WITH_CONTENT_SCAN */
+#ifdef EXPERIMENTAL_DMARC
+ dmarc_up = dmarc_store_data(from_header);
+#endif /* EXPERIMENTAL_DMARC */
+
+#ifndef DISABLE_PRDR
+ if (prdr_requested && recipients_count > 1 && acl_smtp_data_prdr)
+ {
+ unsigned int c;
+ int all_pass = OK;
+ int all_fail = FAIL;
+
+ smtp_printf("353 PRDR content analysis beginning\r\n");
+ /* Loop through recipients, responses must be in same order received */
+ for (c = 0; recipients_count > c; c++)
+ {
+ uschar * addr= recipients_list[c].address;
+ uschar * msg= US"PRDR R=<%s> %s";
+ uschar * code;
+ DEBUG(D_receive)
+ debug_printf("PRDR processing recipient %s (%d of %d)\n",
+ addr, c+1, recipients_count);
+ rc = acl_check(ACL_WHERE_PRDR, addr,
+ acl_smtp_data_prdr, &user_msg, &log_msg);
+
+ /* If any recipient rejected content, indicate it in final message */
+ all_pass |= rc;
+ /* If all recipients rejected, indicate in final message */
+ all_fail &= rc;
+
+ switch (rc)
+ {
+ case OK: case DISCARD: code = US"250"; break;
+ case DEFER: code = US"450"; break;
+ default: code = US"550"; break;
+ }
+ if (user_msg != NULL)
+ smtp_user_msg(code, user_msg);
+ else
+ {
+ switch (rc)
+ {
+ case OK: case DISCARD:
+ msg = string_sprintf(CS msg, addr, "acceptance"); break;
+ case DEFER:
+ msg = string_sprintf(CS msg, addr, "temporary refusal"); break;
+ default:
+ msg = string_sprintf(CS msg, addr, "refusal"); break;
+ }
+ smtp_user_msg(code, msg);
+ }
+ if (log_msg) log_write(0, LOG_MAIN, "PRDR %s %s", addr, log_msg);
+ else if (user_msg) log_write(0, LOG_MAIN, "PRDR %s %s", addr, user_msg);
+ else log_write(0, LOG_MAIN, "%s", CS msg);
+
+ if (rc != OK) { receive_remove_recipient(addr); c--; }
+ }
+ /* Set up final message, used if data acl gives OK */
+ smtp_reply = string_sprintf("%s id=%s message %s",
+ all_fail == FAIL ? US"550" : US"250",
+ message_id,
+ all_fail == FAIL
+ ? US"rejected for all recipients"
+ : all_pass == OK
+ ? US"accepted"
+ : US"accepted for some recipients");
+ if (recipients_count == 0)
+ {
+ message_id[0] = 0; /* Indicate no message accepted */
+ goto TIDYUP;
+ }
+ }
+ else
+ prdr_requested = FALSE;
+#endif /* !DISABLE_PRDR */
+
/* Check the recipients count again, as the MIME ACL might have changed
them. */
if (acl_smtp_data != NULL && recipients_count > 0)
{
rc = acl_check(ACL_WHERE_DATA, NULL, acl_smtp_data, &user_msg, &log_msg);
- add_acl_headers(US"DATA");
+ add_acl_headers(ACL_WHERE_DATA, US"DATA");
if (rc == DISCARD)
{
recipients_count = 0;
blackholed_by = US"DATA ACL";
if (log_msg != NULL)
blackhole_log_msg = string_sprintf(": %s", log_msg);
+ cancel_cutthrough_connection("data acl discard");
}
else if (rc != OK)
{
Uunlink(spool_name);
+ cancel_cutthrough_connection("data acl not ok");
#ifdef WITH_CONTENT_SCAN
unspool_mbox();
#endif
dcc_ok = 0;
#endif
if (smtp_handle_acl_fail(ACL_WHERE_DATA, rc, user_msg, log_msg) != 0)
- smtp_yield = FALSE; /* No more messsages after dropped connection */
+ smtp_yield = FALSE; /* No more messages after dropped connection */
smtp_reply = US""; /* Indicate reply already sent */
message_id[0] = 0; /* Indicate no message accepted */
goto TIDYUP; /* Skip to end of function */
/* Does not return */
}
}
- add_acl_headers(US"non-SMTP");
+ add_acl_headers(ACL_WHERE_NOTSMTP, US"non-SMTP");
}
}
goto TEMPREJECT;
case LOCAL_SCAN_REJECT_NOLOGHDR:
- log_extra_selector &= ~LX_rejected_header;
+ BIT_CLEAR(log_selector, log_selector_size, Li_rejected_header);
/* Fall through */
case LOCAL_SCAN_REJECT:
break;
case LOCAL_SCAN_TEMPREJECT_NOLOGHDR:
- log_extra_selector &= ~LX_rejected_header;
+ BIT_CLEAR(log_selector, log_selector_size, Li_rejected_header);
/* Fall through */
case LOCAL_SCAN_TEMPREJECT:
signal(SIGTERM, SIG_IGN);
signal(SIGINT, SIG_IGN);
+
/* Ensure the first time flag is set in the newly-received message. */
deliver_firsttime = TRUE;
s = add_host_info_for_log(s, &size, &sptr);
#ifdef SUPPORT_TLS
-if ((log_extra_selector & LX_tls_cipher) != 0 && tls_cipher != NULL)
- s = string_append(s, &size, &sptr, 2, US" X=", tls_cipher);
-if ((log_extra_selector & LX_tls_certificate_verified) != 0 &&
- tls_cipher != NULL)
+if (LOGGING(tls_cipher) && tls_in.cipher)
+ s = string_append(s, &size, &sptr, 2, US" X=", tls_in.cipher);
+if (LOGGING(tls_certificate_verified) && tls_in.cipher)
s = string_append(s, &size, &sptr, 2, US" CV=",
- tls_certificate_verified? "yes":"no");
-if ((log_extra_selector & LX_tls_peerdn) != 0 && tls_peerdn != NULL)
+ tls_in.certificate_verified? "yes":"no");
+if (LOGGING(tls_peerdn) && tls_in.peerdn)
s = string_append(s, &size, &sptr, 3, US" DN=\"",
- string_printing(tls_peerdn), US"\"");
+ string_printing(tls_in.peerdn), US"\"");
+if (LOGGING(tls_sni) && tls_in.sni)
+ s = string_append(s, &size, &sptr, 3, US" SNI=\"",
+ string_printing(tls_in.sni), US"\"");
#endif
-if (sender_host_authenticated != NULL)
+if (sender_host_authenticated)
{
s = string_append(s, &size, &sptr, 2, US" A=", sender_host_authenticated);
if (authenticated_id != NULL)
+ {
s = string_append(s, &size, &sptr, 2, US":", authenticated_id);
+ if (LOGGING(smtp_mailauth) && authenticated_sender != NULL)
+ s = string_append(s, &size, &sptr, 2, US":", authenticated_sender);
+ }
}
+#ifndef DISABLE_PRDR
+if (prdr_requested)
+ s = string_append(s, &size, &sptr, 1, US" PRDR");
+#endif
+
+#ifdef SUPPORT_PROXY
+if (proxy_session && LOGGING(proxy))
+ s = string_append(s, &size, &sptr, 2, US" PRX=", proxy_local_address);
+#endif
+
sprintf(CS big_buffer, "%d", msg_size);
s = string_append(s, &size, &sptr, 2, US" S=", big_buffer);
+/* log 8BITMIME mode announced in MAIL_FROM
+ 0 ... no BODY= used
+ 7 ... 7BIT
+ 8 ... 8BITMIME */
+if (LOGGING(8bitmime))
+ {
+ sprintf(CS big_buffer, "%d", body_8bitmime);
+ s = string_append(s, &size, &sptr, 2, US" M8S=", big_buffer);
+ }
+
/* If an addr-spec in a message-id contains a quoted string, it can contain
any characters except " \ and CR and so in particular it can contain NL!
Therefore, make sure we use a printing-characters only version for the log.
/* If subject logging is turned on, create suitable printing-character
text. By expanding $h_subject: we make use of the MIME decoding. */
-if ((log_extra_selector & LX_subject) != 0 && subject_header != NULL)
+if (LOGGING(subject) && subject_header != NULL)
{
int i;
uschar *p = big_buffer;
/* Create a message log file if message logs are being used and this message is
not blackholed. Write the reception stuff to it. We used to leave message log
-creation until the first delivery, but this has proved confusing for somep
+creation until the first delivery, but this has proved confusing for some
people. */
if (message_logs && blackholed_by == NULL)
/* Re-use the log line workspace */
sptr = 0;
- s = string_cat(s, &size, &sptr, msg, Ustrlen(msg));
+ s = string_cat(s, &size, &sptr, msg);
s = add_host_info_for_log(s, &size, &sptr);
s[sptr] = 0;
log_write(0, LOG_MAIN, "%s", s);
/* The connection has not gone away; we really are going to take responsibility
for this message. */
-log_write(0, LOG_MAIN |
- (((log_extra_selector & LX_received_recipients) != 0)? LOG_RECIPIENTS : 0) |
- (((log_extra_selector & LX_received_sender) != 0)? LOG_SENDER : 0),
- "%s", s);
-receive_call_bombout = FALSE;
+/* Cutthrough - had sender last-dot; assume we've sent (or bufferred) all
+ data onward by now.
+
+ Send dot onward. If accepted, wipe the spooled files, log as delivered and accept
+ the sender's dot (below).
+ If rejected: copy response to sender, wipe the spooled files, log approriately.
+ If temp-reject: accept to sender, keep the spooled files.
+
+ Having the normal spool files lets us do data-filtering, and store/forward on temp-reject.
+
+ XXX We do not handle queue-only, freezing, or blackholes.
+*/
+if(cutthrough.fd >= 0)
+ {
+ uschar * msg= cutthrough_finaldot(); /* Ask the target system to accept the message */
+ /* Logging was done in finaldot() */
+ switch(msg[0])
+ {
+ case '2': /* Accept. Do the same to the source; dump any spoolfiles. */
+ cutthrough_done = ACCEPTED;
+ break; /* message_id needed for SMTP accept below */
+
+ default: /* Unknown response, or error. Treat as temp-reject. */
+ case '4': /* Temp-reject. Keep spoolfiles and accept. */
+ cutthrough_done = TMP_REJ; /* Avoid the usual immediate delivery attempt */
+ break; /* message_id needed for SMTP accept below */
+
+ case '5': /* Perm-reject. Do the same to the source. Dump any spoolfiles */
+ smtp_reply= msg; /* Pass on the exact error */
+ cutthrough_done = PERM_REJ;
+ break;
+ }
+ }
-/* Log any control actions taken by an ACL or local_scan(). */
+#ifndef DISABLE_PRDR
+if(!smtp_reply || prdr_requested)
+#else
+if(!smtp_reply)
+#endif
+ {
+ log_write(0, LOG_MAIN |
+ (LOGGING(received_recipients)? LOG_RECIPIENTS : 0) |
+ (LOGGING(received_sender)? LOG_SENDER : 0),
+ "%s", s);
-if (deliver_freeze) log_write(0, LOG_MAIN, "frozen by %s", frozen_by);
-if (queue_only_policy) log_write(L_delay_delivery, LOG_MAIN,
- "no immediate delivery: queued by %s", queued_by);
+ /* Log any control actions taken by an ACL or local_scan(). */
+
+ if (deliver_freeze) log_write(0, LOG_MAIN, "frozen by %s", frozen_by);
+ if (queue_only_policy) log_write(L_delay_delivery, LOG_MAIN,
+ "no immediate delivery: queued by %s", queued_by);
+ }
+receive_call_bombout = FALSE;
store_reset(s); /* The store for the main log message can be reused */
possible for fclose() to fail - but what to do? What has happened to the lock
if this happens? */
+
TIDYUP:
process_info[process_info_len] = 0; /* Remove message id */
if (data_file != NULL) (void)fclose(data_file); /* Frees the lock */
{
uschar *code = US"250";
int len = 3;
- smtp_message_code(&code, &len, &user_msg, NULL);
+ smtp_message_code(&code, &len, &user_msg, NULL, TRUE);
smtp_respond(code, len, TRUE, user_msg);
}
else
smtp_printf("%.1024s\r\n", smtp_reply);
}
+
+ switch (cutthrough_done)
+ {
+ case ACCEPTED: log_write(0, LOG_MAIN, "Completed");/* Delivery was done */
+ case PERM_REJ: { /* Delete spool files */
+ sprintf(CS spool_name, "%s/input/%s/%s-D", spool_directory,
+ message_subdir, message_id);
+ Uunlink(spool_name);
+ sprintf(CS spool_name, "%s/input/%s/%s-H", spool_directory,
+ message_subdir, message_id);
+ Uunlink(spool_name);
+ sprintf(CS spool_name, "%s/msglog/%s/%s", spool_directory,
+ message_subdir, message_id);
+ Uunlink(spool_name);
+ }
+ case TMP_REJ: message_id[0] = 0; /* Prevent a delivery from starting */
+ default:break;
+ }
+ cutthrough.delivery = FALSE;
}
/* For batched SMTP, generate an error message on failure, and do
if (blackholed_by != NULL)
{
- uschar *detail = (local_scan_data != NULL)?
- string_printing(local_scan_data) :
- string_sprintf("(%s discarded recipients)", blackholed_by);
+ const uschar *detail = local_scan_data
+ ? string_printing(local_scan_data)
+ : string_sprintf("(%s discarded recipients)", blackholed_by);
log_write(0, LOG_MAIN, "=> blackhole %s%s", detail, blackhole_log_msg);
log_write(0, LOG_MAIN, "Completed");
message_id[0] = 0;
git://git.exim.org / users / jgh / exim.git / blobdiff