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authorNiall Sheridan <nsheridan@gmail.com>2016-10-04 14:37:01 -0700
committerNiall Sheridan <nsheridan@gmail.com>2016-10-06 22:02:39 -0500
commit17cd70cea546e287713a3d4c086528a85abefa2e (patch)
treef52ffa10f2065c47445bd6c37f07a57f68074100 /vendor/github.com/mitchellh/go-homedir/homedir.go
parent294020406c257ad4eb1867a1e7fb8b694aefddd2 (diff)
Add support for Hashicorp Vault
Vault is supported for the following: As a well-known filesystem for TLS cert, TLS key and SSH signing key. For configuration secrets for cookie_secret, csrf_secret, oauth_client_id and oauth_client_secret options.
Diffstat (limited to 'vendor/github.com/mitchellh/go-homedir/homedir.go')
-rw-r--r--vendor/github.com/mitchellh/go-homedir/homedir.go137
1 files changed, 137 insertions, 0 deletions
diff --git a/vendor/github.com/mitchellh/go-homedir/homedir.go b/vendor/github.com/mitchellh/go-homedir/homedir.go
new file mode 100644
index 0000000..8996b02
--- /dev/null
+++ b/vendor/github.com/mitchellh/go-homedir/homedir.go
@@ -0,0 +1,137 @@
+package homedir
+
+import (
+ "bytes"
+ "errors"
+ "os"
+ "os/exec"
+ "path/filepath"
+ "runtime"
+ "strconv"
+ "strings"
+ "sync"
+)
+
+// DisableCache will disable caching of the home directory. Caching is enabled
+// by default.
+var DisableCache bool
+
+var homedirCache string
+var cacheLock sync.RWMutex
+
+// Dir returns the home directory for the executing user.
+//
+// This uses an OS-specific method for discovering the home directory.
+// An error is returned if a home directory cannot be detected.
+func Dir() (string, error) {
+ if !DisableCache {
+ cacheLock.RLock()
+ cached := homedirCache
+ cacheLock.RUnlock()
+ if cached != "" {
+ return cached, nil
+ }
+ }
+
+ cacheLock.Lock()
+ defer cacheLock.Unlock()
+
+ var result string
+ var err error
+ if runtime.GOOS == "windows" {
+ result, err = dirWindows()
+ } else {
+ // Unix-like system, so just assume Unix
+ result, err = dirUnix()
+ }
+
+ if err != nil {
+ return "", err
+ }
+ homedirCache = result
+ return result, nil
+}
+
+// Expand expands the path to include the home directory if the path
+// is prefixed with `~`. If it isn't prefixed with `~`, the path is
+// returned as-is.
+func Expand(path string) (string, error) {
+ if len(path) == 0 {
+ return path, nil
+ }
+
+ if path[0] != '~' {
+ return path, nil
+ }
+
+ if len(path) > 1 && path[1] != '/' && path[1] != '\\' {
+ return "", errors.New("cannot expand user-specific home dir")
+ }
+
+ dir, err := Dir()
+ if err != nil {
+ return "", err
+ }
+
+ return filepath.Join(dir, path[1:]), nil
+}
+
+func dirUnix() (string, error) {
+ // First prefer the HOME environmental variable
+ if home := os.Getenv("HOME"); home != "" {
+ return home, nil
+ }
+
+ // If that fails, try getent
+ var stdout bytes.Buffer
+ cmd := exec.Command("getent", "passwd", strconv.Itoa(os.Getuid()))
+ cmd.Stdout = &stdout
+ if err := cmd.Run(); err != nil {
+ // If "getent" is missing, ignore it
+ if err == exec.ErrNotFound {
+ return "", err
+ }
+ } else {
+ if passwd := strings.TrimSpace(stdout.String()); passwd != "" {
+ // username:password:uid:gid:gecos:home:shell
+ passwdParts := strings.SplitN(passwd, ":", 7)
+ if len(passwdParts) > 5 {
+ return passwdParts[5], nil
+ }
+ }
+ }
+
+ // If all else fails, try the shell
+ stdout.Reset()
+ cmd = exec.Command("sh", "-c", "cd && pwd")
+ cmd.Stdout = &stdout
+ if err := cmd.Run(); err != nil {
+ return "", err
+ }
+
+ result := strings.TrimSpace(stdout.String())
+ if result == "" {
+ return "", errors.New("blank output when reading home directory")
+ }
+
+ return result, nil
+}
+
+func dirWindows() (string, error) {
+ // First prefer the HOME environmental variable
+ if home := os.Getenv("HOME"); home != "" {
+ return home, nil
+ }
+
+ drive := os.Getenv("HOMEDRIVE")
+ path := os.Getenv("HOMEPATH")
+ home := drive + path
+ if drive == "" || path == "" {
+ home = os.Getenv("USERPROFILE")
+ }
+ if home == "" {
+ return "", errors.New("HOMEDRIVE, HOMEPATH, and USERPROFILE are blank")
+ }
+
+ return home, nil
+}