smtp: Support the SMTPUTF8 extension in the VRFY command

4 files changed, 116 insertions, 6 deletions

diff --git a/tests/data/Makefile.inc b/tests/data/Makefile.inc
index 2a75cffdb..9b9f8e485 100644
--- a/tests/data/Makefile.inc
+++ b/tests/data/Makefile.inc
@@ -109,7 +109,7 @@ test927 test928 test929 test930 test931 test932 test933 test934 test935 \
 test936 test937 test938 test939 test940 test941 test942 test943 test944 \
 test945 test946 test947 test948 test949 test950 test951 test952 test953 \
 test954 test955 test956 test957 test958 test959 test960 test961 test962 \
-test963 test964 test965 test966 \
+test963 test964 test965 test966 test967 test968 \
 \
 test1000 test1001 test1002 test1003 test1004 test1005 test1006 test1007 \
 test1008 test1009 test1010 test1011 test1012 test1013 test1014 test1015 \
diff --git a/tests/data/test967 b/tests/data/test967
new file mode 100644
index 000000000..da9e01e77
--- /dev/null
+++ b/tests/data/test967
@@ -0,0 +1,54 @@
+<testcase>
+<info>
+<keywords>
+SMTP
+VRFY
+IDN
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<servercmd>
+CAPA SMTPUTF8
+</servercmd>
+<data>
+252 Send some mail and I'll try my best

+</data>
+</reply>
+
+#
+# Client-side
+<client>
+<server>
+smtp
+</server>
+<features>
+idn
+</features>
+<setenv>
+LC_ALL=en_US.UTF-8
+LC_CTYPE=en_US.UTF-8
+</setenv>
+<precheck>
+perl -MI18N::Langinfo=langinfo,CODESET -e 'die "Needs a UTF-8 locale" if (lc(langinfo(CODESET())) ne "utf-8");'
+</precheck>
+ <name>
+SMTP external VRFY with SMTPUTF8 support
+ </name>
+<command>
+smtp://%HOSTIP:%SMTPPORT/967 --mail-rcpt Användaren@åäö.se
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+<protocol>
+EHLO 967

+VRFY Användaren@xn--4cab6c.se SMTPUTF8

+QUIT

+</protocol>
+</verify>
+</testcase>
diff --git a/tests/data/test968 b/tests/data/test968
new file mode 100644
index 000000000..5d827c91c
--- /dev/null
+++ b/tests/data/test968
@@ -0,0 +1,51 @@
+<testcase>
+<info>
+<keywords>
+SMTP
+VRFY
+IDN
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<servercmd>
+CAPA SMTPUTF8
+</servercmd>
+</reply>
+
+#
+# Client-side
+<client>
+<server>
+smtp
+</server>
+<features>
+idn
+</features>
+<setenv>
+LC_ALL=en_US.UTF-8
+LC_CTYPE=en_US.UTF-8
+</setenv>
+<precheck>
+perl -MI18N::Langinfo=langinfo,CODESET -e 'die "Needs a UTF-8 locale" if (lc(langinfo(CODESET())) ne "utf-8");'
+</precheck>
+ <name>
+SMTP VRFY with SMTPUTF8 support
+ </name>
+<command>
+smtp://%HOSTIP:%SMTPPORT/968 --mail-rcpt Användaren
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+<protocol>
+EHLO 968

+VRFY Användaren SMTPUTF8

+QUIT

+</protocol>
+</verify>
+</testcase>
diff --git a/tests/ftpserver.pl b/tests/ftpserver.pl
index 9c4b88aef..63dc3342c 100755
--- a/tests/ftpserver.pl
+++ b/tests/ftpserver.pl
@@ -1037,13 +1037,15 @@ sub VRFY_smtp {
         sendcontrol "501 Unrecognized parameter\r\n";
     }
     else {
+        my $smtputf8 = grep /^SMTPUTF8$/, @capabilities;
+
         # Validate the username (only a valid local or external username is
         # allowed, such as user or user@example.com)
-        if ($username !~
-            /^([a-zA-Z0-9._%+-]+)(\@(([a-zA-Z0-9-]+)\.)+([a-zA-Z]{2,4}))?$/) {
-            sendcontrol "501 Invalid address\r\n";
-        }
-        else {
+        if ((!$smtputf8 && $username =~
+            /^([a-zA-Z0-9._%+-]+)(\@(([a-zA-Z0-9-]+)\.)+([a-zA-Z]{2,4}))?$/) ||
+            ($smtputf8 && $username =~
+            /^([a-zA-Z0-9\x{80}-\x{ff}._%+-]+)(\@(([a-zA-Z0-9\x{80}-\x{ff}-]+)\.)+([a-zA-Z]{2,4}))?$/)) {
+
             my @data = getreplydata($smtp_client);
 
             if(!@data) {
@@ -1060,6 +1062,9 @@ sub VRFY_smtp {
                 sendcontrol $d;
             }
         }
+        else {
+            sendcontrol "501 Invalid address\r\n";
+        }
     }
 
     return 0;