[PATCH] wg-quick: add 'reload' command (wrapper for 'wg syncconf')

Tore Anderson tore at fud.no
Mon Mar 30 10:41:57 CEST 2020


Also add an ExecReload statement that uses this in the systemd template unit.

Signed-off-by: Tore Anderson <tore at fud.no>
---
 src/man/wg-quick.8            |  9 ++++++---
 src/systemd/wg-quick at .service |  1 +
 src/wg-quick/darwin.bash      | 17 ++++++++++++++++-
 src/wg-quick/freebsd.bash     | 15 ++++++++++++++-
 src/wg-quick/linux.bash       | 15 ++++++++++++++-
 src/wg-quick/openbsd.bash     | 15 ++++++++++++++-
 6 files changed, 65 insertions(+), 7 deletions(-)

diff --git a/src/man/wg-quick.8 b/src/man/wg-quick.8
index eca3b48..023805e 100644
--- a/src/man/wg-quick.8
+++ b/src/man/wg-quick.8
@@ -10,6 +10,8 @@ wg-quick - set up a WireGuard interface simply
 |
 .I down
 |
+.I reload
+|
 .I save
 |
 .I strip
@@ -28,9 +30,10 @@ Use \fIup\fP to add and set up an interface, and use \fIdown\fP to tear down and
 an interface. Running \fIup\fP adds a WireGuard interface, brings up the interface with the
 supplied IP addresses, sets up mtu and routes, and optionally runs pre/post up scripts. Running \fIdown\fP
 optionally saves the current configuration, removes the WireGuard interface, and optionally
-runs pre/post down scripts. Running \fIsave\fP saves the configuration of an existing
-interface without bringing the interface down. Use \fIstrip\fP to output a configuration file
-with all
+runs pre/post down scripts. Running \fIreload\fP synchronises any changes to peers/keys in
+the config file with an already active interfaces. Running \fIsave\fP saves the configuration
+of an existing interface without bringing the interface down. Use \fIstrip\fP to output a
+configuration file with all
 .BR wg-quick (8)-specific
 options removed, suitable for use with
 .BR wg (8).
diff --git a/src/systemd/wg-quick at .service b/src/systemd/wg-quick at .service
index 7c5f9d1..a3b89d9 100644
--- a/src/systemd/wg-quick at .service
+++ b/src/systemd/wg-quick at .service
@@ -14,6 +14,7 @@ Type=oneshot
 RemainAfterExit=yes
 ExecStart=/usr/bin/wg-quick up %i
 ExecStop=/usr/bin/wg-quick down %i
+ExecReload=/usr/bin/wg-quick reload %i
 Environment=WG_ENDPOINT_RESOLUTION_RETRIES=infinity
 
 [Install]
diff --git a/src/wg-quick/darwin.bash b/src/wg-quick/darwin.bash
index d9d07cf..a732d6a 100755
--- a/src/wg-quick/darwin.bash
+++ b/src/wg-quick/darwin.bash
@@ -350,6 +350,10 @@ set_config() {
 	cmd wg setconf "$REAL_INTERFACE" <(echo "$WG_CONFIG")
 }
 
+sync_config() {
+	cmd wg syncconf "$REAL_INTERFACE" <(echo "$WG_CONFIG")
+}
+
 save_config() {
 	local old_umask new_config current_config address cmd
 	new_config=$'[Interface]\n'
@@ -398,7 +402,7 @@ execute_hooks() {
 
 cmd_usage() {
 	cat >&2 <<-_EOF
-	Usage: $PROGRAM [ up | down | save | strip ] [ CONFIG_FILE | INTERFACE ]
+	Usage: $PROGRAM [ up | down | reload | save | strip ] [ CONFIG_FILE | INTERFACE ]
 
 	  CONFIG_FILE is a configuration file, whose filename is the interface name
 	  followed by \`.conf'. Otherwise, INTERFACE is an interface name, with
@@ -458,6 +462,13 @@ cmd_down() {
 	execute_hooks "${POST_DOWN[@]}"
 }
 
+cmd_reload() {
+	if ! get_real_interface || [[ " $(wg show interfaces) " != *" $REAL_INTERFACE "* ]]; then
+		die "\`$INTERFACE' is not a WireGuard interface"
+	fi
+	sync_config
+}
+
 cmd_save() {
 	if ! get_real_interface || [[ " $(wg show interfaces) " != *" $REAL_INTERFACE "* ]]; then
 		die "\`$INTERFACE' is not a WireGuard interface"
@@ -482,6 +493,10 @@ elif [[ $# -eq 2 && $1 == down ]]; then
 	auto_su
 	parse_options "$2"
 	cmd_down
+elif [[ $# -eq 2 && $1 == reload ]]; then
+	auto_su
+	parse_options "$2"
+	cmd_reload
 elif [[ $# -eq 2 && $1 == save ]]; then
 	auto_su
 	parse_options "$2"
diff --git a/src/wg-quick/freebsd.bash b/src/wg-quick/freebsd.bash
index c390dcc..6eef1f6 100755
--- a/src/wg-quick/freebsd.bash
+++ b/src/wg-quick/freebsd.bash
@@ -333,6 +333,10 @@ set_config() {
 	cmd wg setconf "$INTERFACE" <(echo "$WG_CONFIG")
 }
 
+sync_config() {
+	cmd wg syncconf "$INTERFACE" <(echo "$WG_CONFIG")
+}
+
 save_config() {
 	local old_umask new_config current_config address cmd
 	new_config=$'[Interface]\n'
@@ -382,7 +386,7 @@ execute_hooks() {
 
 cmd_usage() {
 	cat >&2 <<-_EOF
-	Usage: $PROGRAM [ up | down | save | strip ] [ CONFIG_FILE | INTERFACE ]
+	Usage: $PROGRAM [ up | down | reload | save | strip ] [ CONFIG_FILE | INTERFACE ]
 
 	  CONFIG_FILE is a configuration file, whose filename is the interface name
 	  followed by \`.conf'. Otherwise, INTERFACE is an interface name, with
@@ -440,6 +444,11 @@ cmd_down() {
 	execute_hooks "${POST_DOWN[@]}"
 }
 
+cmd_reload() {
+	[[ " $(wg show interfaces) " == *" $INTERFACE "* ]] || die "\`$INTERFACE' is not a WireGuard interface"
+	sync_config
+}
+
 cmd_save() {
 	[[ " $(wg show interfaces) " == *" $INTERFACE "* ]] || die "\`$INTERFACE' is not a WireGuard interface"
 	save_config
@@ -464,6 +473,10 @@ elif [[ $# -eq 2 && $1 == down ]]; then
 	auto_su
 	parse_options "$2"
 	cmd_down
+elif [[ $# -eq 2 && $1 == reload ]]; then
+	auto_su
+	parse_options "$2"
+	cmd_reload
 elif [[ $# -eq 2 && $1 == save ]]; then
 	auto_su
 	parse_options "$2"
diff --git a/src/wg-quick/linux.bash b/src/wg-quick/linux.bash
index 7c2c002..37d6ba8 100755
--- a/src/wg-quick/linux.bash
+++ b/src/wg-quick/linux.bash
@@ -246,6 +246,10 @@ set_config() {
 	cmd wg setconf "$INTERFACE" <(echo "$WG_CONFIG")
 }
 
+sync_config() {
+	cmd wg syncconf "$INTERFACE" <(echo "$WG_CONFIG")
+}
+
 save_config() {
 	local old_umask new_config current_config address cmd
 	[[ $(ip -all -brief address show dev "$INTERFACE") =~ ^$INTERFACE\ +\ [A-Z]+\ +(.+)$ ]] || true
@@ -293,7 +297,7 @@ execute_hooks() {
 
 cmd_usage() {
 	cat >&2 <<-_EOF
-	Usage: $PROGRAM [ up | down | save | strip ] [ CONFIG_FILE | INTERFACE ]
+	Usage: $PROGRAM [ up | down | reload | save | strip ] [ CONFIG_FILE | INTERFACE ]
 
 	  CONFIG_FILE is a configuration file, whose filename is the interface name
 	  followed by \`.conf'. Otherwise, INTERFACE is an interface name, with
@@ -347,6 +351,11 @@ cmd_down() {
 	execute_hooks "${POST_DOWN[@]}"
 }
 
+cmd_reload() {
+	[[ " $(wg show interfaces) " == *" $INTERFACE "* ]] || die "\`$INTERFACE' is not a WireGuard interface"
+	sync_config
+}
+
 cmd_save() {
 	[[ " $(wg show interfaces) " == *" $INTERFACE "* ]] || die "\`$INTERFACE' is not a WireGuard interface"
 	save_config
@@ -368,6 +377,10 @@ elif [[ $# -eq 2 && $1 == down ]]; then
 	auto_su
 	parse_options "$2"
 	cmd_down
+elif [[ $# -eq 2 && $1 == reload ]]; then
+	auto_su
+	parse_options "$2"
+	cmd_reload
 elif [[ $# -eq 2 && $1 == save ]]; then
 	auto_su
 	parse_options "$2"
diff --git a/src/wg-quick/openbsd.bash b/src/wg-quick/openbsd.bash
index 8d458d1..c509e70 100755
--- a/src/wg-quick/openbsd.bash
+++ b/src/wg-quick/openbsd.bash
@@ -313,6 +313,10 @@ set_config() {
 	cmd wg setconf "$REAL_INTERFACE" <(echo "$WG_CONFIG")
 }
 
+sync_config() {
+	cmd wg syncconf "$INTERFACE" <(echo "$WG_CONFIG")
+}
+
 save_config() {
 	local old_umask new_config current_config address network cmd
 	new_config=$'[Interface]\n'
@@ -361,7 +365,7 @@ execute_hooks() {
 
 cmd_usage() {
 	cat >&2 <<-_EOF
-	Usage: $PROGRAM [ up | down | save | strip ] [ CONFIG_FILE | INTERFACE ]
+	Usage: $PROGRAM [ up | down | reload | save | strip ] [ CONFIG_FILE | INTERFACE ]
 
 	  CONFIG_FILE is a configuration file, whose filename is the interface name
 	  followed by \`.conf'. Otherwise, INTERFACE is an interface name, with
@@ -419,6 +423,11 @@ cmd_down() {
 	execute_hooks "${POST_DOWN[@]}"
 }
 
+cmd_reload() {
+	[[ " $(wg show interfaces) " == *" $INTERFACE "* ]] || die "\`$INTERFACE' is not a WireGuard interface"
+	sync_config
+}
+
 cmd_save() {
 	if ! get_real_interface || [[ " $(wg show interfaces) " != *" $REAL_INTERFACE "* ]]; then
 		die "\`$INTERFACE' is not a WireGuard interface"
@@ -442,6 +451,10 @@ elif [[ $# -eq 2 && $1 == down ]]; then
 	auto_su
 	parse_options "$2"
 	cmd_down
+elif [[ $# -eq 2 && $1 == reload ]]; then
+	auto_su
+	parse_options "$2"
+	cmd_reload
 elif [[ $# -eq 2 && $1 == save ]]; then
 	auto_su
 	parse_options "$2"
-- 
2.25.1



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