From: Stephan Bosch <stephan.bosch@dovecot.fi>
Date: Sun, 10 Dec 2017 10:32:28 +0000 (+0100)
Subject: lib-smtp: server: DATA command: Continue processing connection input once DATA reply... 
X-Git-Tag: 2.3.0.rc1~149
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=090abb1975e23dbaebf4b07ba6003a7e54097341;p=thirdparty%2Fdovecot%2Fcore.git

lib-smtp: server: DATA command: Continue processing connection input once DATA reply is submitted.

Fixes a potential connection hang.
---

diff --git a/src/lib-smtp/smtp-server-cmd-data.c b/src/lib-smtp/smtp-server-cmd-data.c
index c5511228f7..6d18872ae2 100644
--- a/src/lib-smtp/smtp-server-cmd-data.c
+++ b/src/lib-smtp/smtp-server-cmd-data.c
@@ -297,7 +297,9 @@ static void cmd_data_next(struct smtp_server_cmd_ctx *cmd)
 			return;
 	}
 
-	if (!smtp_server_command_is_replied(command)) {
+	if (smtp_server_command_is_replied(command)) {
+		smtp_server_command_input_unlock(cmd);
+	} else {
 		if (data_cmd->client_input) {
 			/* using input from client connection;
 			   capture I/O event */