1 files changed, 27 insertions(+), 0 deletions(-)

M pkg/jankboot/jankboot.go

@@ 316,6 316,33 @@ func (d *FastbootDevice) openIOEndpoints(intf *gousb.Interface) (epIn *gousb.InE
 	return
 }
 
+// GetVar retrieves a fastboot variable, or err if the variable doesn't exist
+func (d *FastbootDevice) GetVar(variable string) (value string, err error) {
+	ctx := gousb.NewContext()
+	defer ctx.Close()
+
+	resp, err := d.getVar(ctx, variable)
+
+	value = resp.Response
+	return
+}
+
+// getVar retrieves a fastboot variable, or err if the variable doesn't exist.
+// This is the non-exported version that receives an open gousb.Context
+func (d *FastbootDevice) getVar(ctx *gousb.Context, variable string) (resp fastbootResponse, err error) {
+	resp, err = d.sendCommand(ctx, fmt.Sprintf("getvar:%s", variable))
+	if err != nil {
+		err = fmt.Errorf("jankboot.getVar(): %w", err)
+		return
+	}
+
+	if !checkResponse(resp, "OKAY", "") {
+		err = fmt.Errorf("jankboot.getVar(): invalid response recieved when requesting variable %q: %s", variable, resp)
+	}
+
+	return
+}
+
 // getResponse parses the response from the client into a fastbootResponse type
 func getResponse(ctx *gousb.Context, epIn *gousb.InEndpoint) (resp fastbootResponse, err error) {