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feature(agent,api,pkg): add VPN capability
It adds to the ShellHub's Agent the capability to connect to a ShellHub's Enterprise service, which provides a virtual private network between devices registered into the same namespace. To enable it, the ShellHub's instance must support it, and the `SHELLHUB_VPN` environmental variable must be set to `TRUE` on the ShellHub Agent startup.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| package vpn | ||
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| import ( | ||
| "net" | ||
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| "github.com/labstack/echo/v4" | ||
| log "github.com/sirupsen/logrus" | ||
| ) | ||
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| func handler(handler func(net.Conn, *Settings) error) func(c echo.Context) error { | ||
| return func(c echo.Context) error { | ||
| log.Debug("handler started") | ||
| defer log.Debug("handler done") | ||
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| conn, _, err := c.Response().Hijack() | ||
| if err != nil { | ||
| log.Error(err) | ||
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| return err | ||
| } | ||
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| defer conn.Close() | ||
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| settings, err := ParseSettings(c.Request().Body) | ||
| if err != nil { | ||
| log.WithError(err).Error("faild to parse the settings") | ||
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| return err | ||
| } | ||
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| // NOTE: the [handler] is called to handler the core logic of the VPN client, while this handler is used to extract | ||
| // the connection and the settings data. | ||
| if err := handler(conn, settings); err != nil { | ||
| log.WithError(err).Error("failed to handler the vpn connection between server and agent") | ||
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| return err | ||
| } | ||
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| return nil | ||
| } | ||
| } | ||
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| func closeHandler(callback func() error) func(c echo.Context) error { | ||
| return func(c echo.Context) error { | ||
| log.Trace("close handler called") | ||
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| return callback() | ||
| } | ||
| } |
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