* 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 receiving a message and setting up spool files. */
static FILE *data_file = NULL;
static int data_fd = -1;
-static uschar spool_name[256];
+static uschar *spool_name = US"";
{
int ch_state = 0;
int ch;
-register int linelength = 0;
+int linelength = 0;
while ((ch = (receive_getc)()) != EOF)
{
message_size++;
linelength++;
- if (fout != NULL)
+ if (fout)
{
if (fputc(ch, fout) == EOF) return END_WERROR;
if (message_size > thismessage_size_limit) return END_SIZE;
(void) cutthrough_put_nl();
else
{
- uschar c= ch;
+ uschar c = ch;
(void) cutthrough_puts(&c, 1);
}
}
+/* Variant of the above read_message_data_smtp() specialised for RFC 3030
+CHUNKING. We assume that the incoming has proper CRLF, so only have to scan
+for and strip CR. On the downside there are more protocol reasons to stop.
+
+Arguments:
+ fout a FILE to which to write the message; NULL if skipping
+
+Returns: One of the END_xxx values indicating why it stopped reading
+*/
+
+static int
+read_message_bdat_smtp(FILE *fout)
+{
+int ch;
+int linelength = 0;
+
+for (;;) switch (ch = bdat_getc())
+ {
+ case EOF: return END_EOF;
+ case EOD: return END_DOT;
+ case ERR: return END_PROTOCOL;
+
+ case '\r':
+ body_linecount++;
+ if (linelength > max_received_linelength)
+ max_received_linelength = linelength;
+ linelength = -1;
+ break;
+
+ case 0:
+ body_zerocount++;
+ /*FALLTHROUGH*/
+ default:
+ message_size++;
+ linelength++;
+ if (fout)
+ {
+ if (fputc(ch, fout) == EOF) return END_WERROR;
+ if (message_size > thismessage_size_limit) return END_SIZE;
+ }
+#ifdef notyet
+ if(ch == '\n')
+ (void) cutthrough_put_nl();
+ else
+ {
+ uschar c = ch;
+ (void) cutthrough_puts(&c, 1);
+ }
+#endif
+ break;
+ }
+/*NOTREACHED*/
+}
+
+
+
+
/*************************************************
* Swallow SMTP message *
*************************************************/
void
receive_swallow_smtp(void)
{
+/*XXX CHUNKING: not enough. read chunks until RSET? */
if (message_ended >= END_NOTENDED)
message_ended = read_message_data_smtp(NULL);
}
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 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 (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 ( smtp_input
&& smtp_handle_acl_fail(ACL_WHERE_MIME, rc, user_msg, log_msg) != 0)
{
- *smtp_yield_ptr = FALSE; /* No more messsages after dropped connection */
+ *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 */
received = expand_string(received_header_text);
received_for = NULL;
-if (received == NULL)
+if (!received)
{
if(spool_name[0] != 0)
Uunlink(spool_name); /* Lose the data file */
message_id[0] = 0;
data_file = NULL;
data_fd = -1;
-spool_name[0] = 0;
+spool_name = US"";
message_size = 0;
warning_count = 0;
received_count = 1; /* For the one we will add */
to be the least significant base-62 digit of the time of arrival. Otherwise
ensure that it is an empty string. */
-message_subdir[0] = split_spool_directory? message_id[5] : 0;
+message_subdir[0] = split_spool_directory ? message_id[5] : 0;
/* Now that we have the message-id, if there is no message-id: header, generate
one, but only for local (without suppress_local_fixups) or submission mode
return message_ended == END_DOT;
}
+/*XXX CHUNKING: need to cancel cutthrough under BDAT, for now. In future,
+think more if it could be handled. Cannot do onward CHUNKING unless
+inbound is, but inbound chunking ought to be ok with outbound plain.
+Could we do onward CHUNKING given inbound CHUNKING?
+*/
+if (chunking_state > CHUNKING_OFFERED)
+ cancel_cutthrough_connection("chunking active");
+
/* 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.
/* 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
-is checked on input to be < 200 characters long. */
+directory if it isn't there. */
+
+spool_name = spool_fname(US"input", message_subdir, message_id, US"-D");
+DEBUG(D_receive) debug_printf("Data file name: %s\n", spool_name);
-sprintf(CS spool_name, "%s/input/%s/%s-D", spool_directory, message_subdir,
- message_id);
-data_fd = Uopen(spool_name, O_RDWR|O_CREAT|O_EXCL, SPOOL_MODE);
-if (data_fd < 0)
+if ((data_fd = Uopen(spool_name, O_RDWR|O_CREAT|O_EXCL, SPOOL_MODE)) < 0)
{
if (errno == ENOENT)
{
- uschar temp[16];
- sprintf(CS temp, "input/%s", message_subdir);
- if (message_subdir[0] == 0) temp[5] = 0;
- (void)directory_make(spool_directory, temp, INPUT_DIRECTORY_MODE, TRUE);
+ (void) directory_make(spool_directory,
+ spool_sname(US"input", message_subdir),
+ INPUT_DIRECTORY_MODE, TRUE);
data_fd = Uopen(spool_name, O_RDWR|O_CREAT|O_EXCL, SPOOL_MODE);
}
if (data_fd < 0)
{
if (smtp_input)
{
- message_ended = read_message_data_smtp(data_file);
+ message_ended = chunking_state > CHUNKING_OFFERED
+ ? read_message_bdat_smtp(data_file)
+ : read_message_data_smtp(data_file);
receive_linecount++; /* The terminating "." line */
}
else message_ended = read_message_data(data_file);
receive_linecount += body_linecount; /* For BSMTP errors mainly */
message_linecount += body_linecount;
- /* Handle premature termination of SMTP */
-
- if (smtp_input && message_ended == END_EOF)
+ switch (message_ended)
{
- 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;
- goto TIDYUP; /* Skip to end of function */
- }
+ /* Handle premature termination of SMTP */
- /* Handle message that is too big. Don't use host_or_ident() in the log
- message; we want to see the ident value even for non-remote messages. */
+ case END_EOF:
+ if (smtp_input)
+ {
+ 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;
+ goto TIDYUP; /* Skip to end of function */
+ }
+ break;
- 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 */
+ /* Handle message that is too big. Don't use host_or_ident() in the log
+ message; we want to see the ident value even for non-remote messages. */
- log_write(L_size_reject, LOG_MAIN|LOG_REJECT, "rejected from <%s>%s%s%s%s: "
- "message too big: read=%d max=%d",
- sender_address,
- (sender_fullhost == NULL)? "" : " H=",
- (sender_fullhost == NULL)? US"" : sender_fullhost,
- (sender_ident == NULL)? "" : " U=",
- (sender_ident == NULL)? US"" : sender_ident,
- message_size,
- thismessage_size_limit);
+ case 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 */
- if (smtp_input)
- {
- smtp_reply = US"552 Message size exceeds maximum permitted";
- message_id[0] = 0; /* Indicate no message accepted */
- goto TIDYUP; /* Skip to end of function */
- }
- else
- {
- fseek(data_file, (long int)SPOOL_DATA_START_OFFSET, SEEK_SET);
- give_local_error(ERRMESS_TOOBIG,
- string_sprintf("message too big (max=%d)", thismessage_size_limit),
- US"message rejected: ", error_rc, data_file, header_list);
- /* Does not return */
- }
+ log_write(L_size_reject, LOG_MAIN|LOG_REJECT, "rejected from <%s>%s%s%s%s: "
+ "message too big: read=%d max=%d",
+ sender_address,
+ (sender_fullhost == NULL)? "" : " H=",
+ (sender_fullhost == NULL)? US"" : sender_fullhost,
+ (sender_ident == NULL)? "" : " U=",
+ (sender_ident == NULL)? US"" : sender_ident,
+ message_size,
+ thismessage_size_limit);
+
+ if (smtp_input)
+ {
+ smtp_reply = US"552 Message size exceeds maximum permitted";
+ message_id[0] = 0; /* Indicate no message accepted */
+ goto TIDYUP; /* Skip to end of function */
+ }
+ else
+ {
+ fseek(data_file, (long int)SPOOL_DATA_START_OFFSET, SEEK_SET);
+ give_local_error(ERRMESS_TOOBIG,
+ string_sprintf("message too big (max=%d)", thismessage_size_limit),
+ US"message rejected: ", error_rc, data_file, header_list);
+ /* Does not return */
+ }
+ break;
+
+ /* Handle bad BDAT protocol sequence */
+
+ case END_PROTOCOL:
+ Uunlink(spool_name); /* Lose the data file when closed */
+ cancel_cutthrough_connection("sender protocol error");
+ smtp_reply = US""; /* Response already sent */
+ message_id[0] = 0; /* Indicate no message accepted */
+ goto TIDYUP; /* Skip to end of function */
}
}
enable_dollar_recipients = TRUE;
if (recipients_count == 0)
- {
- blackholed_by = recipients_discarded? US"MAIL ACL" : US"RCPT ACL";
- }
+ blackholed_by = recipients_discarded ? US"MAIL ACL" : US"RCPT ACL";
+
else
{
/* Handle interactive SMTP messages */
dkim_exim_verify_finish();
/* Check if we must run the DKIM ACL */
- if ((acl_smtp_dkim != NULL) &&
- (dkim_verify_signers != NULL) &&
- (dkim_verify_signers[0] != '\0'))
+ if (acl_smtp_dkim && dkim_verify_signers && *dkim_verify_signers)
{
uschar *dkim_verify_signers_expanded =
expand_string(dkim_verify_signers);
- if (dkim_verify_signers_expanded == NULL)
- {
+ if (!dkim_verify_signers_expanded)
log_write(0, LOG_MAIN|LOG_PANIC,
"expansion of dkim_verify_signers option failed: %s",
expand_string_message);
- }
+
else
{
int sep = 0;
uschar *seen_items = NULL;
int seen_items_size = 0;
int seen_items_offset = 0;
- uschar itembuf[256];
/* Default to OK when no items are present */
rc = OK;
- while ((item = string_nextinlist(&ptr, &sep,
- itembuf,
- sizeof(itembuf))))
+ while ((item = string_nextinlist(&ptr, &sep, NULL, 0)))
{
/* Prevent running ACL for an empty item */
- if (!item || (item[0] == '\0')) continue;
+ if (!item || !*item) continue;
/* 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];
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, 0)))
if (Ustrcmp(seen_item,item) == 0)
{
seen_this_item = TRUE;
{
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 */
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 */
deliver_firsttime = TRUE;
#ifdef EXPERIMENTAL_BRIGHTMAIL
-if (bmi_run == 1) {
- /* rewind data file */
+if (bmi_run == 1)
+ { /* rewind data file */
lseek(data_fd, (long int)SPOOL_DATA_START_OFFSET, SEEK_SET);
bmi_verdicts = bmi_process_message(header_list, data_fd);
-};
+ }
#endif
/* Update the timstamp in our Received: header to account for any time taken by
/* Write the -H file */
else
- {
if ((msg_size = spool_write_header(message_id, SW_RECEIVING, &errmsg)) < 0)
{
log_write(0, LOG_MAIN, "Message abandoned: %s", errmsg);
/* Does not return */
}
}
- }
/* The message has now been successfully received. */
#ifndef DISABLE_PRDR
if (prdr_requested)
- s = string_append(s, &size, &sptr, 1, US" PRDR");
+ s = string_catn(s, &size, &sptr, US" PRDR", 5);
#endif
#ifdef SUPPORT_PROXY
s = string_append(s, &size, &sptr, 2, US" PRX=", proxy_local_address);
#endif
+if (chunking_state > CHUNKING_OFFERED)
+ s = string_catn(s, &size, &sptr, US" K", 2);
+
sprintf(CS big_buffer, "%d", msg_size);
s = string_append(s, &size, &sptr, 2, US" S=", big_buffer);
s = string_append(s, &size, &sptr, 2, US" M8S=", big_buffer);
}
+if (*queue_name)
+ s = string_append(s, &size, &sptr, 2, US" Q=", queue_name);
+
/* 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.
{
int fd;
- sprintf(CS spool_name, "%s/msglog/%s/%s", spool_directory, message_subdir,
- message_id);
- fd = Uopen(spool_name, O_WRONLY|O_APPEND|O_CREAT, SPOOL_MODE);
-
- if (fd < 0 && errno == ENOENT)
+ spool_name = spool_fname(US"msglog", message_subdir, message_id, US"");
+
+ if ( (fd = Uopen(spool_name, O_WRONLY|O_APPEND|O_CREAT, SPOOL_MODE)) < 0
+ && errno == ENOENT
+ )
{
- uschar temp[16];
- sprintf(CS temp, "msglog/%s", message_subdir);
- if (message_subdir[0] == 0) temp[6] = 0;
- (void)directory_make(spool_directory, temp, MSGLOG_DIRECTORY_MODE, TRUE);
+ (void)directory_make(spool_directory,
+ spool_sname(US"msglog", message_subdir),
+ MSGLOG_DIRECTORY_MODE, TRUE);
fd = Uopen(spool_name, O_WRONLY|O_APPEND|O_CREAT, SPOOL_MODE);
}
/* 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);
/* Delete the files for this aborted message. */
- 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);
+ Uunlink(spool_fname(US"input", message_subdir, message_id, US"-D"));
+ Uunlink(spool_fname(US"input", message_subdir, message_id, US"-H"));
+ Uunlink(spool_fname(US"msglog", message_subdir, message_id, US""));
goto TIDYUP;
}
*/
if(cutthrough.fd >= 0)
{
- uschar * msg= cutthrough_finaldot(); /* Ask the target system to accept the messsage */
+ uschar * msg= cutthrough_finaldot(); /* Ask the target system to accept the message */
/* Logging was done in finaldot() */
switch(msg[0])
{
/* Default OK response */
+ else if (chunking_state > CHUNKING_OFFERED)
+ {
+ smtp_printf("250- %u byte chunk, total %d\r\n250 OK id=%s\r\n",
+ chunking_datasize, message_size+message_linecount, message_id);
+ chunking_state = CHUNKING_OFFERED;
+ }
else
smtp_printf("250 OK id=%s\r\n", message_id);
+
if (host_checking)
fprintf(stdout,
"\n**** SMTP testing: that is not a real message id!\n\n");
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 PERM_REJ:
+ { /* Delete spool files */
+ Uunlink(spool_fname(US"input", message_subdir, message_id, US"-D"));
+ Uunlink(spool_fname(US"input", message_subdir, message_id, US"-H"));
+ Uunlink(spool_fname(US"msglog", message_subdir, message_id, US""));
}
case TMP_REJ: message_id[0] = 0; /* Prevent a delivery from starting */
default:break;
git://git.exim.org / exim.git / blobdiff