summaryrefslogtreecommitdiff
path: root/vendor/github.com/godbus/dbus/conn_other.go
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/github.com/godbus/dbus/conn_other.go')
-rw-r--r--vendor/github.com/godbus/dbus/conn_other.go63
1 files changed, 56 insertions, 7 deletions
diff --git a/vendor/github.com/godbus/dbus/conn_other.go b/vendor/github.com/godbus/dbus/conn_other.go
index 254c9f2ef..289044a44 100644
--- a/vendor/github.com/godbus/dbus/conn_other.go
+++ b/vendor/github.com/godbus/dbus/conn_other.go
@@ -6,12 +6,14 @@ import (
"bytes"
"errors"
"fmt"
+ "io/ioutil"
"os"
"os/exec"
+ "os/user"
+ "path"
+ "strings"
)
-const defaultSystemBusAddress = "unix:path=/var/run/dbus/system_bus_socket"
-
func getSessionBusPlatformAddress() (string, error) {
cmd := exec.Command("dbus-launch")
b, err := cmd.CombinedOutput()
@@ -33,10 +35,57 @@ func getSessionBusPlatformAddress() (string, error) {
return addr, nil
}
-func getSystemBusPlatformAddress() string {
- address := os.Getenv("DBUS_SYSTEM_BUS_ADDRESS")
- if address != "" {
- return fmt.Sprintf("unix:path=%s", address)
+// tryDiscoverDbusSessionBusAddress tries to discover an existing dbus session
+// and return the value of its DBUS_SESSION_BUS_ADDRESS.
+// It tries different techniques employed by different operating systems,
+// returning the first valid address it finds, or an empty string.
+//
+// * /run/user/<uid>/bus if this exists, it *is* the bus socket. present on
+// Ubuntu 18.04
+// * /run/user/<uid>/dbus-session: if this exists, it can be parsed for the bus
+// address. present on Ubuntu 16.04
+//
+// See https://dbus.freedesktop.org/doc/dbus-launch.1.html
+func tryDiscoverDbusSessionBusAddress() string {
+ if runtimeDirectory, err := getRuntimeDirectory(); err == nil {
+
+ if runUserBusFile := path.Join(runtimeDirectory, "bus"); fileExists(runUserBusFile) {
+ // if /run/user/<uid>/bus exists, that file itself
+ // *is* the unix socket, so return its path
+ return fmt.Sprintf("unix:path=%s", runUserBusFile)
+ }
+ if runUserSessionDbusFile := path.Join(runtimeDirectory, "dbus-session"); fileExists(runUserSessionDbusFile) {
+ // if /run/user/<uid>/dbus-session exists, it's a
+ // text file // containing the address of the socket, e.g.:
+ // DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-E1c73yNqrG
+
+ if f, err := ioutil.ReadFile(runUserSessionDbusFile); err == nil {
+ fileContent := string(f)
+
+ prefix := "DBUS_SESSION_BUS_ADDRESS="
+
+ if strings.HasPrefix(fileContent, prefix) {
+ address := strings.TrimRight(strings.TrimPrefix(fileContent, prefix), "\n\r")
+ return address
+ }
+ }
+ }
+ }
+ return ""
+}
+
+func getRuntimeDirectory() (string, error) {
+ if currentUser, err := user.Current(); err != nil {
+ return "", err
+ } else {
+ return fmt.Sprintf("/run/user/%s", currentUser.Uid), nil
+ }
+}
+
+func fileExists(filename string) bool {
+ if _, err := os.Stat(filename); !os.IsNotExist(err) {
+ return true
+ } else {
+ return false
}
- return defaultSystemBusAddress
}