From: Jonathan Nieder <jrnieder@gmail.com>
Date: Mon, 20 Nov 2017 21:30:30 +0000 (-0800)
Subject: ssh: 'simple' variant does not support -4/-6
X-Git-Tag: v2.16.0-rc0~68^2~2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a3f5b66fac3b5f3b2c352c8086dbc3d476f9e3d4;p=thirdparty%2Fgit.git

ssh: 'simple' variant does not support -4/-6

If the user passes -4/--ipv4 or -6/--ipv6 to "git fetch" or "git push"
and the ssh command configured with GIT_SSH does not support such a
setting, error out instead of ignoring the option and continuing.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Acked-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---

diff --git a/connect.c b/connect.c
index a939323d05..c3d1cd3787 100644
--- a/connect.c
+++ b/connect.c
@@ -938,11 +938,30 @@ static void push_ssh_options(struct argv_array *args, struct argv_array *env,
 				 get_protocol_version_config());
 	}
 
-	if (variant != VARIANT_SIMPLE) {
-		if (flags & CONNECT_IPV4)
+	if (flags & CONNECT_IPV4) {
+		switch (variant) {
+		case VARIANT_AUTO:
+			BUG("VARIANT_AUTO passed to push_ssh_options");
+		case VARIANT_SIMPLE:
+			die("ssh variant 'simple' does not support -4");
+		case VARIANT_SSH:
+		case VARIANT_PLINK:
+		case VARIANT_PUTTY:
+		case VARIANT_TORTOISEPLINK:
 			argv_array_push(args, "-4");
-		else if (flags & CONNECT_IPV6)
+		}
+	} else if (flags & CONNECT_IPV6) {
+		switch (variant) {
+		case VARIANT_AUTO:
+			BUG("VARIANT_AUTO passed to push_ssh_options");
+		case VARIANT_SIMPLE:
+			die("ssh variant 'simple' does not support -6");
+		case VARIANT_SSH:
+		case VARIANT_PLINK:
+		case VARIANT_PUTTY:
+		case VARIANT_TORTOISEPLINK:
 			argv_array_push(args, "-6");
+		}
 	}
 
 	if (variant == VARIANT_TORTOISEPLINK)
diff --git a/t/t5601-clone.sh b/t/t5601-clone.sh
index d96b8e7379..9ae1606ee5 100755
--- a/t/t5601-clone.sh
+++ b/t/t5601-clone.sh
@@ -364,9 +364,10 @@ test_expect_success 'OpenSSH variant passes -4' '
 	expect_ssh "-4 -p 123" myhost src
 '
 
-test_expect_success 'variant can be overriden' '
-	git -c ssh.variant=simple clone -4 "[myhost:123]:src" ssh-simple-clone &&
-	expect_ssh myhost src
+test_expect_success 'variant can be overridden' '
+	copy_ssh_wrapper_as "$TRASH_DIRECTORY/putty" &&
+	git -c ssh.variant=putty clone -4 "[myhost:123]:src" ssh-putty-clone &&
+	expect_ssh "-4 -P 123" myhost src
 '
 
 test_expect_success 'variant=auto picks based on basename' '
@@ -375,10 +376,9 @@ test_expect_success 'variant=auto picks based on basename' '
 	expect_ssh "-4 -P 123" myhost src
 '
 
-test_expect_success 'simple is treated as simple' '
+test_expect_success 'simple does not support -4/-6' '
 	copy_ssh_wrapper_as "$TRASH_DIRECTORY/simple" &&
-	git clone -4 "[myhost:123]:src" ssh-bracket-clone-simple &&
-	expect_ssh myhost src
+	test_must_fail git clone -4 "[myhost:123]:src" ssh-bracket-clone-simple
 '
 
 test_expect_success 'uplink is treated as simple' '