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) */
+/*************************************************
+* 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
+*/
+
+#ifdef EXPERIMENTAL_PRDR
+static void
+smtp_user_msg(uschar *code, uschar *user_msg)
+{
+int len = 3;
+smtp_message_code(&code, &len, &user_msg, NULL);
+smtp_respond(code, len, TRUE, user_msg);
+}
+#endif
+
+
+
+
+
/*************************************************
* Remove a recipient from the list *
*************************************************/
uschar *s = Ustrchr(h->text, ':') + 1;
while (isspace(*s)) s++;
len = h->slen - (s - h->text) - 1;
- if (strncmpic(s, originator_login, len) == 0
- && Ustrlen(originator_login) == len)
+ 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,
add_acl_headers(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
uschar seen_item_buf[256];
uschar *seen_items_list = seen_items;
int seen_this_item = 0;
-
+
while ((seen_item = string_nextinlist(&seen_items_list, &sep,
seen_item_buf,
sizeof(seen_item_buf))) != NULL)
{
seen_this_item = 1;
break;
- }
+ }
}
if (seen_this_item > 0)
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,":");
}
goto TIDYUP;
#endif /* WITH_CONTENT_SCAN */
+#ifdef EXPERIMENTAL_PRDR
+ if (prdr_requested && recipients_count > 1 && acl_smtp_data_prdr != NULL )
+ {
+ 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, 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 /* EXPERIMENTAL_PRDR */
+
/* Check the recipients count again, as the MIME ACL might have changed
them. */
}
}
+#ifdef EXPERIMENTAL_PRDR
+if (prdr_requested)
+ s = string_append(s, &size, &sptr, 1, US" PRDR");
+#endif
+
sprintf(CS big_buffer, "%d", msg_size);
s = string_append(s, &size, &sptr, 2, US" S=", big_buffer);
case '2': /* Accept. Do the same to the source; dump any spoolfiles. */
cutthrough_done = 3;
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 = 1; /* 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 = 2;
}
}
-if(smtp_reply == NULL)
+if(smtp_reply == NULL
+#ifdef EXPERIMENTAL_PRDR
+ || prdr_requested
+#endif
+ )
{
log_write(0, LOG_MAIN |
(((log_extra_selector & LX_received_recipients) != 0)? LOG_RECIPIENTS : 0) |
projects / exim.git / blobdiff