github.com/rigado/snapd@v2.42.5-go-mod+incompatible/xdgopenproxy/xdgopenproxy.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2018 Canonical Ltd
     5   *
     6   * This program is free software: you can redistribute it and/or modify
     7   * it under the terms of the GNU General Public License version 3 as
     8   * published by the Free Software Foundation.
     9   *
    10   * This program is distributed in the hope that it will be useful,
    11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13   * GNU General Public License for more details.
    14   *
    15   * You should have received a copy of the GNU General Public License
    16   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17   *
    18   */
    19  
    20  // Package xdgopenproxy provides a client for snap userd's xdg-open D-Bus proxy
    21  package xdgopenproxy
    22  
    23  import (
    24  	"net/url"
    25  	"syscall"
    26  
    27  	"github.com/godbus/dbus"
    28  )
    29  
    30  func Run(urlOrFile string) error {
    31  	bus, err := dbus.SessionBus()
    32  	if err != nil {
    33  		return err
    34  	}
    35  	defer bus.Close()
    36  	launcher := bus.Object("io.snapcraft.Launcher", "/io/snapcraft/Launcher")
    37  	return launch(launcher, urlOrFile)
    38  }
    39  
    40  func launch(launcher dbus.BusObject, urlOrFile string) error {
    41  	if u, err := url.Parse(urlOrFile); err == nil {
    42  		if u.Scheme == "file" {
    43  			return openFile(launcher, u.Path)
    44  		} else if u.Scheme != "" {
    45  			return openUrl(launcher, urlOrFile)
    46  		}
    47  	}
    48  	return openFile(launcher, urlOrFile)
    49  }
    50  
    51  func openUrl(launcher dbus.BusObject, url string) error {
    52  	return launcher.Call("io.snapcraft.Launcher.OpenURL", 0, url).Err
    53  }
    54  
    55  func openFile(launcher dbus.BusObject, filename string) error {
    56  	fd, err := syscall.Open(filename, syscall.O_RDONLY, 0)
    57  	if err != nil {
    58  		return err
    59  	}
    60  	defer syscall.Close(fd)
    61  
    62  	return launcher.Call("io.snapcraft.Launcher.OpenFile", 0, "", dbus.UnixFD(fd)).Err
    63  }