-
Notifications
You must be signed in to change notification settings - Fork 40
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
3 changed files
with
118 additions
and
91 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| // Copyright 2023 Jigsaw Operations LLC | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // https://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package main | ||
|
|
||
| import ( | ||
| "github.com/Jigsaw-Code/outline-internal-sdk/network" | ||
| ) | ||
|
|
||
| type TunDevice interface { | ||
| network.IPDevice | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| // Copyright 2023 Jigsaw Operations LLC | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // https://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| //go:build linux | ||
|
|
||
| package main | ||
|
|
||
| import ( | ||
| "errors" | ||
| "fmt" | ||
|
|
||
| "github.com/songgao/water" | ||
| "github.com/vishvananda/netlink" | ||
| ) | ||
|
|
||
| type tunDevice struct { | ||
| *water.Interface | ||
| } | ||
|
|
||
| var _ TunDevice = (*tunDevice)(nil) | ||
|
|
||
| func NewTunDevice(name, ip string) (d TunDevice, err error) { | ||
| if len(name) == 0 { | ||
| return nil, errors.New("name is required for TUN/TAP device") | ||
| } | ||
| if len(ip) == 0 { | ||
| return nil, errors.New("ip is required for TUN/TAP device") | ||
| } | ||
|
|
||
| tun, err := water.New(water.Config{ | ||
| DeviceType: water.TUN, | ||
| PlatformSpecificParams: water.PlatformSpecificParams{ | ||
| Name: name, | ||
| Persist: false, | ||
| }, | ||
| }) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to create TUN/TAP device: %w", err) | ||
| } | ||
|
|
||
| defer func() { | ||
| if err != nil { | ||
| tun.Close() | ||
| } | ||
| }() | ||
|
|
||
| tunDev := &tunDevice{tun} | ||
| if err := tunDev.configureSubnetAndBringUp(ip); err != nil { | ||
| return nil, fmt.Errorf("failed to configure TUN/TAP device: %w", err) | ||
| } | ||
| return tunDev, nil | ||
| } | ||
|
|
||
| func (d *tunDevice) MTU() int { | ||
| // d.Interface. | ||
| // netlink.NewLinkAttrs().MTU | ||
| return 0 | ||
| } | ||
|
|
||
| func (d *tunDevice) configureSubnetAndBringUp(ip string) error { | ||
| tunName := d.Interface.Name() | ||
| tunLink, err := netlink.LinkByName(tunName) | ||
| if err != nil { | ||
| return fmt.Errorf("TUN/TAP device '%s' not found: %w", tunName, err) | ||
| } | ||
| subnet := ip + "/32" | ||
| addr, err := netlink.ParseAddr(subnet) | ||
| if err != nil { | ||
| return fmt.Errorf("subnet address '%s' is not valid: %w", subnet, err) | ||
| } | ||
| if err := netlink.AddrAdd(tunLink, addr); err != nil { | ||
| return fmt.Errorf("failed to add subnet to TUN/TAP device '': %w", tunName, err) | ||
| } | ||
| if err := netlink.LinkSetUp(tunLink); err != nil { | ||
| return fmt.Errorf("failed to bring TUN/TAP device '%s' up: %w", tunName, err) | ||
| } | ||
| return nil | ||
| } |