[nginx] Mail: fixed buffer allocation for CRLF after Auth-SMTP-*...

[Maxim Dounin]

details:   http://hg.nginx.org/nginx/rev/62c098eb4509
branches:  
changeset: 5987:62c098eb4509
user:      Maxim Dounin <mdounin at mdounin.ru>
date:      Wed Feb 25 17:47:43 2015 +0300
description:
Mail: fixed buffer allocation for CRLF after Auth-SMTP-* headers.

There were no buffer overruns in real life as there is extra space
allocated for the Auth-Login-Attempt counter.

diffstat:

 src/mail/ngx_mail_auth_http_module.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (16 lines):

diff --git a/src/mail/ngx_mail_auth_http_module.c b/src/mail/ngx_mail_auth_http_module.c
--- a/src/mail/ngx_mail_auth_http_module.c
+++ b/src/mail/ngx_mail_auth_http_module.c
@@ -1170,9 +1170,9 @@ ngx_mail_auth_http_create_request(ngx_ma
           + sizeof("Client-IP: ") - 1 + s->connection->addr_text.len
                 + sizeof(CRLF) - 1
           + sizeof("Client-Host: ") - 1 + s->host.len + sizeof(CRLF) - 1
-          + sizeof("Auth-SMTP-Helo: ") - 1 + s->smtp_helo.len
-          + sizeof("Auth-SMTP-From: ") - 1 + s->smtp_from.len
-          + sizeof("Auth-SMTP-To: ") - 1 + s->smtp_to.len
+          + sizeof("Auth-SMTP-Helo: ") - 1 + s->smtp_helo.len + sizeof(CRLF) - 1
+          + sizeof("Auth-SMTP-From: ") - 1 + s->smtp_from.len + sizeof(CRLF) - 1
+          + sizeof("Auth-SMTP-To: ") - 1 + s->smtp_to.len + sizeof(CRLF) - 1
           + ahcf->header.len
           + sizeof(CRLF) - 1;