[WIP] add viper to manage envvars and cfg files

Former-commit-id: 99d241dc790629791b67b7b2ce20a10341a1c1e7 [formerly 08e8410bffdb50134a2d6ccbe853b25d4c4d3fc6] [formerly f32b18d9acb42ee1988c49b7980a16a606cee142 [formerly 1080bfde680d9d87271e63e6253450595e1f5c05]]
Former-commit-id: 318c4f159697e896bcf824e274907c5c03046bf0 [formerly 82533ae817673dfab8d56533f15a9931c0c74c1e]
Former-commit-id: ece42aa8e8c7480a5a21614b6ca397b71a01e1fa

Dockerfile

@@ -8,5 +8,4 @@ EXPOSE 80
 
 COPY filebrowser /filebrowser
 
-ENTRYPOINT [ "/filebrowser", "--database", "/database.db" ]
+ENTRYPOINT [ "/filebrowser"]
-CMD [ "--scope /srv", "--port 80" ]

cmd/config_init.go

@@ -9,6 +9,7 @@ import (
 	"github.com/asdine/storm"
 	"github.com/filebrowser/filebrowser/v2/settings"
 	"github.com/spf13/cobra"
+	v "github.com/spf13/viper"
 )
 
 func init() {
@@ -28,6 +29,7 @@ to the defaults when creating new users and you don't
 override the options.`,
 	Args: cobra.NoArgs,
 	Run: func(cmd *cobra.Command, args []string) {
+		databasePath := v.GetString("database")
 		if _, err := os.Stat(databasePath); err == nil {
 			panic(errors.New(databasePath + " already exists"))
 		}

cmd/import.go

@@ -3,6 +3,7 @@ package cmd
 import (
 	"github.com/filebrowser/filebrowser/v2/storage/bolt/importer"
 	"github.com/spf13/cobra"
+	v "github.com/spf13/viper"
 )
 
 func init() {
@@ -24,7 +25,7 @@ this version.`,
 		oldDB := mustGetString(cmd, "old.database")
 		oldConf := mustGetString(cmd, "old.config")
 
-		err := importer.Import(oldDB, oldConf, databasePath)
+		err := importer.Import(oldDB, oldConf, v.GetString("database"))
 		checkErr(err)
 	},
 }

cmd/root.go

@@ -3,13 +3,13 @@ package cmd
 import (
 	"crypto/rand"
 	"crypto/tls"
-	"errors"
 	"io/ioutil"
 	"log"
 	"net"
 	"net/http"
 	"os"
 	"strconv"
+	"strings"
 
 	"github.com/asdine/storm"
 	"github.com/filebrowser/filebrowser/v2/auth"
@@ -18,26 +18,13 @@ import (
 	"github.com/filebrowser/filebrowser/v2/users"
 
 	fbhttp "github.com/filebrowser/filebrowser/v2/http"
+	homedir "github.com/mitchellh/go-homedir"
 	"github.com/spf13/cobra"
-	"github.com/spf13/pflag"
+	//	"github.com/spf13/pflag"
+	v "github.com/spf13/viper"
 	lumberjack "gopkg.in/natefinch/lumberjack.v2"
 )
 
-var (
-	databasePath string
-)
-
-func init() {
-	rootCmd.PersistentFlags().StringVarP(&databasePath, "database", "d", "./filebrowser.db", "path to the database")
-
-	rootCmd.Flags().StringP("address", "a", "", "address to listen on (default comes from database)")
-	rootCmd.Flags().StringP("log", "l", "", "log output (default comes from database)")
-	rootCmd.Flags().IntP("port", "p", 0, "port to listen on (default comes from database)")
-	rootCmd.Flags().StringP("cert", "c", "", "tls certificate (default comes from database)")
-	rootCmd.Flags().StringP("key", "k", "", "tls key (default comes from database)")
-	rootCmd.Flags().StringP("scope", "s", "", "scope for users")
-}
-
 var rootCmd = &cobra.Command{
 	Use:   "filebrowser",
 	Short: "A stylish web-based file browser",
@@ -56,17 +43,211 @@ Use the available flags to override the database/default options. These flags
 values won't be persisted to the database. To persist configuration to the database
 use the command 'filebrowser config set'.`,
 	Run: func(cmd *cobra.Command, args []string) {
-		if _, err := os.Stat(databasePath); os.IsNotExist(err) {
-			quickSetup(cmd)
-		}
-
 		db := getDB()
 		defer db.Close()
 		st := getStorage(db)
-		startServer(cmd, st)
+		startServer(st)
 	},
 }
 
+var (
+	cfgFile string
+)
+
+// POSSIBLE WORKAROUND TO IDENTIFY WHEN DEFAULT VALUES ARE BEING USED
+var defaults = struct {
+	database string
+	address  string
+	log      string
+	port     int
+	scope    string
+	admin    string
+}{
+	"./filebrowser.db",
+	"127.0.0.1",
+	"stderr",
+	80,
+	"/srv",
+	"admin",
+}
+
+func init() {
+	cobra.OnInitialize(initConfig)
+	//rootCmd.SetVersionTemplate("File Browser {{printf \"version %s\" .Version}}\n")
+
+	f := rootCmd.Flags()
+	pf := rootCmd.PersistentFlags()
+
+	pf.StringVarP(&cfgFile, "config", "c", "", "config file (defaults are './.filebrowser[ext]', '$HOME/.filebrowser[ext]' or '/etc/filebrowser/.filebrowser[ext]')")
+
+	vaddP(pf, "database", "d", "./filebrowser.db", "path to the database")
+
+	vaddP(f, "address", "a", defaults.address, "address to listen on")
+	vaddP(f, "log", "l", defaults.log, "log output")
+	vaddP(f, "port", "p", defaults.port, "port to listen on")
+	vaddP(f, "cert", "t", "", "tls certificate (default comes from database)")
+	vaddP(f, "key", "k", "", "tls key (default comes from database)")
+	vaddP(f, "scope", "s", defaults.scope, "scope for users")
+	vaddP(f, "force", "f", false, "overwrite DB config with runtime params")
+	vaddP(f, "admin", "f", defaults.admin, "first username")
+	vaddP(f, "passwd", "f", "", "first username password hash")
+	vaddP(f, "baseurl", "b", "", "base URL")
+
+	// Bind the full flag sets to the configuration
+	if err := v.BindPFlags(f); err != nil {
+		panic(err)
+	}
+	if err := v.BindPFlags(pf); err != nil {
+		panic(err)
+	}
+}
+
+// initConfig reads in config file and ENV variables if set.
+func initConfig() {
+	if cfgFile == "" {
+		// Find home directory.
+		home, err := homedir.Dir()
+		if err != nil {
+			panic(err)
+		}
+		v.AddConfigPath(".")
+		v.AddConfigPath(home)
+		v.AddConfigPath("/etc/filebrowser/")
+		v.SetConfigName(".filebrowser")
+	} else {
+		// Use config file from the flag.
+		v.SetConfigFile(cfgFile)
+	}
+
+	v.SetEnvPrefix("FB")
+	v.AutomaticEnv()
+	v.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
+
+	if err := v.ReadInConfig(); err != nil {
+		if _, ok := err.(v.ConfigParseError); ok {
+			panic(err)
+		}
+		log.Println("No config file provided")
+	} else {
+		log.Println("Using config file:", v.ConfigFileUsed())
+	}
+
+	log.Println("FORCE:", v.GetBool("force"))
+
+	/*
+	   if DB exists
+	     if force false
+	       database has highest priority, if undefined in DB use config params
+	     else
+	       config params overwrite existing and non-existing params in DB
+	   else
+	     (quick)Setup with provided config params
+	*/
+
+	/*
+	   DISPLAY WARNINGS WHEN DEFAULT VALUES ARE USED
+
+	     This allows to know if a CLI flag was provided:
+
+	       log.Println(rootCmd.Flags().Changed("database"))
+
+	     However, that is not enough in order to know if a value came from a config file or from envvars.
+	     This should allow so. But it seems not to work as expected (see spf13/viper#323):
+
+	       log.Println(v.IsSet("database"))
+	*/
+
+	if _, err := os.Stat(v.GetString("database")); os.IsNotExist(err) {
+		quickSetup()
+	}
+
+}
+
+/*
+func serverVisitAndReplace(s *settings.Settings) {
+	rootCmd.Flags().Visit(func(flag *pflag.Flag) {
+		switch flag.Name {
+		case "log":
+			s.Log = v.GetString(flag.Name)
+		case "address":
+			s.Server.Address = v.GetString(flag.Name)
+		case "port":
+			s.Server.Port = v.GetInt(flag.Name)
+		case "cert":
+			s.Server.TLSCert = v.GetString(flag.Name)
+		case "key":
+			s.Server.TLSKey = v.GetString(flag.Name)
+		}
+	})
+}
+*/
+
+func quickSetup() {
+	scope := v.GetString("scope")
+	if scope == defaults.scope {
+		log.Println("[WARN] Using default value '/srv' as param 'scope'")
+	}
+
+	db, err := storm.Open(v.GetString("database"))
+	checkErr(err)
+	defer db.Close()
+
+	set := &settings.Settings{
+		Key:        generateRandomBytes(64), // 256 bit
+		BaseURL:    v.GetString("baseurl"),
+		Log:        v.GetString("log"),
+		Signup:     false,
+		AuthMethod: auth.MethodJSONAuth,
+		Server: settings.Server{
+			Port:    v.GetInt("port"),
+			Address: v.GetString("address"),
+			TLSCert: v.GetString("cert"),
+			TLSKey:  v.GetString("key"),
+		},
+		Defaults: settings.UserDefaults{
+			Scope:  scope,
+			Locale: "en",
+			Perm: users.Permissions{
+				Admin:    false,
+				Execute:  true,
+				Create:   true,
+				Rename:   true,
+				Modify:   true,
+				Delete:   true,
+				Share:    true,
+				Download: true,
+			},
+		},
+	}
+
+	//	serverVisitAndReplace(set)
+	st := getStorage(db)
+
+	err = st.Settings.Save(set)
+	checkErr(err)
+
+	err = st.Auth.Save(&auth.JSONAuth{})
+	checkErr(err)
+
+	password := v.GetString("password")
+	if password == "" {
+		password, err = users.HashPwd("admin")
+		checkErr(err)
+	}
+
+	user := &users.User{
+		Username:     v.GetString("admin"),
+		Password:     password,
+		LockPassword: false,
+	}
+
+	set.Defaults.Apply(user)
+	user.Perm.Admin = true
+
+	err = st.Users.Save(user)
+	checkErr(err)
+}
+
 func setupLogger(s *settings.Settings) {
 	switch s.Log {
 	case "stdout":
@@ -85,91 +266,11 @@ func setupLogger(s *settings.Settings) {
 	}
 }
 
-func serverVisitAndReplace(cmd *cobra.Command, s *settings.Settings) {
+func startServer(st *storage.Storage) {
-	cmd.Flags().Visit(func(flag *pflag.Flag) {
-		switch flag.Name {
-		case "log":
-			s.Log = mustGetString(cmd, flag.Name)
-		case "address":
-			s.Server.Address = mustGetString(cmd, flag.Name)
-		case "port":
-			s.Server.Port = mustGetInt(cmd, flag.Name)
-		case "cert":
-			s.Server.TLSCert = mustGetString(cmd, flag.Name)
-		case "key":
-			s.Server.TLSKey = mustGetString(cmd, flag.Name)
-		}
-	})
-}
-
-func quickSetup(cmd *cobra.Command) {
-	scope := mustGetString(cmd, "scope")
-	if scope == "" {
-		panic(errors.New("scope flag must be set for quick setup"))
-	}
-
-	db, err := storm.Open(databasePath)
-	checkErr(err)
-	defer db.Close()
-
-	set := &settings.Settings{
-		Key:        generateRandomBytes(64), // 256 bit
-		BaseURL:    "",
-		Log:        "stderr",
-		Signup:     false,
-		AuthMethod: auth.MethodJSONAuth,
-		Server: settings.Server{
-			Port:    0,
-			Address: "127.0.0.1",
-			TLSCert: mustGetString(cmd, "cert"),
-			TLSKey:  mustGetString(cmd, "key"),
-		},
-		Defaults: settings.UserDefaults{
-			Scope:  scope,
-			Locale: "en",
-			Perm: users.Permissions{
-				Admin:    false,
-				Execute:  true,
-				Create:   true,
-				Rename:   true,
-				Modify:   true,
-				Delete:   true,
-				Share:    true,
-				Download: true,
-			},
-		},
-	}
-
-	serverVisitAndReplace(cmd, set)
-	st := getStorage(db)
-
-	err = st.Settings.Save(set)
-	checkErr(err)
-
-	err = st.Auth.Save(&auth.JSONAuth{})
-	checkErr(err)
-
-	password, err := users.HashPwd("admin")
-	checkErr(err)
-
-	user := &users.User{
-		Username:     "admin",
-		Password:     password,
-		LockPassword: false,
-	}
-
-	set.Defaults.Apply(user)
-	user.Perm.Admin = true
-
-	err = st.Users.Save(user)
-	checkErr(err)
-}
-
-func startServer(cmd *cobra.Command, st *storage.Storage) {
 	settings, err := st.Settings.Get()
 	checkErr(err)
 
-	serverVisitAndReplace(cmd, settings)
+	//	serverVisitAndReplace(settings)
 	setupLogger(settings)
 
 	handler, err := fbhttp.NewHandler(st)

cmd/utils.go

@@ -8,8 +8,34 @@ import (
 	"github.com/filebrowser/filebrowser/v2/storage"
 	"github.com/filebrowser/filebrowser/v2/storage/bolt"
 	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
+	v "github.com/spf13/viper"
 )
 
+func vaddP(f *pflag.FlagSet, k, p string, i interface{}, u string) {
+	switch y := i.(type) {
+	case bool:
+		f.BoolP(k, p, y, u)
+	case int:
+		f.IntP(k, p, y, u)
+	case string:
+		f.StringP(k, p, y, u)
+	}
+	v.SetDefault(k, i)
+}
+
+func vadd(f *pflag.FlagSet, k string, i interface{}, u string) {
+	switch y := i.(type) {
+	case bool:
+		f.Bool(k, y, u)
+	case int:
+		f.Int(k, y, u)
+	case string:
+		f.String(k, y, u)
+	}
+	v.SetDefault(k, i)
+}
+
 func checkErr(err error) {
 	if err != nil {
 		panic(err)
@@ -41,6 +67,7 @@ func mustGetUint(cmd *cobra.Command, flag string) uint {
 }
 
 func getDB() *storm.DB {
+	databasePath := v.GetString("database")
 	if _, err := os.Stat(databasePath); err != nil {
 		panic(errors.New(databasePath + " does not exist. Please run 'filebrowser init' first."))
 	}

go.mod

@@ -8,7 +8,6 @@ require (
 	github.com/asdine/storm v2.1.2+incompatible
 	github.com/boltdb/bolt v1.3.1 // indirect
 	github.com/daaku/go.zipexe v0.0.0-20150329023125-a5fe2436ffcb // indirect
-	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dgrijalva/jwt-go v3.2.0+incompatible
 	github.com/dsnet/compress v0.0.0-20171208185109-cc9eb1d7ad76 // indirect
 	github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568 // indirect
@@ -24,14 +23,14 @@ require (
 	github.com/maruel/natural v0.0.0-20180416170133-dbcb3e2e8cf1
 	github.com/mholt/archiver v3.1.0+incompatible
 	github.com/mholt/caddy v0.11.1
+	github.com/mitchellh/go-homedir v1.0.0
 	github.com/nwaples/rardecode v1.0.0 // indirect
 	github.com/pelletier/go-toml v1.2.0
 	github.com/pierrec/lz4 v2.0.5+incompatible // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/spf13/afero v1.1.2
 	github.com/spf13/cobra v0.0.3
 	github.com/spf13/pflag v1.0.3
-	github.com/stretchr/testify v1.2.2 // indirect
+	github.com/spf13/viper v1.3.1
 	github.com/ulikunitz/xz v0.5.5 // indirect
 	github.com/vmihailenco/msgpack v4.0.1+incompatible // indirect
 	github.com/xi2/xz v0.0.0-20171230120015-48954b6210f8 // indirect
@@ -39,7 +38,6 @@ require (
 	golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9
 	golang.org/x/net v0.0.0-20180906233101-161cd47e91fd // indirect
 	golang.org/x/sync v0.0.0-20181108010431-42b317875d0f // indirect
-	golang.org/x/sys v0.0.0-20181205085412-a5c9d58dba9a // indirect
 	google.golang.org/appengine v1.3.0 // indirect
 	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0

go.sum

@@ -6,10 +6,14 @@ github.com/GeertJohan/go.rice v0.0.0-20170420135705-c02ca9a983da h1:UVU3a9pRUyLd
 github.com/GeertJohan/go.rice v0.0.0-20170420135705-c02ca9a983da/go.mod h1:DgrzXonpdQbfN3uYaGz1EG4Sbhyum/MMIn6Cphlh2bw=
 github.com/Sereal/Sereal v0.0.0-20180905114147-563b78806e28 h1:KjLSBawWQq6I0p9VRX8RtHIuttTYvUCGfMgNoBBFxYs=
 github.com/Sereal/Sereal v0.0.0-20180905114147-563b78806e28/go.mod h1:D0JMgToj/WdxCgd30Kc1UcA9E+WdZoJqeVOuYW7iTBM=
+github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
 github.com/asdine/storm v2.1.2+incompatible h1:dczuIkyqwY2LrtXPz8ixMrU/OFgZp71kbKTHGrXYt/Q=
 github.com/asdine/storm v2.1.2+incompatible/go.mod h1:RarYDc9hq1UPLImuiXK3BIWPJLdIygvV3PsInK0FbVQ=
 github.com/boltdb/bolt v1.3.1 h1:JQmyP4ZBrce+ZQu0dY660FMfatumYDLun9hBCUVIkF4=
 github.com/boltdb/bolt v1.3.1/go.mod h1:clJnj/oiGkjum5o1McbSZDSLxVThjynRyGBgiAx27Ps=
+github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
+github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
+github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
 github.com/daaku/go.zipexe v0.0.0-20150329023125-a5fe2436ffcb h1:tUf55Po0vzOendQ7NWytcdK0VuzQmfAgvGBUOQvN0WA=
 github.com/daaku/go.zipexe v0.0.0-20150329023125-a5fe2436ffcb/go.mod h1:U0vRfAucUOohvdCxt5MWLF+TePIL0xbCkbKIiV8TQCE=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
@@ -20,6 +24,8 @@ github.com/dsnet/compress v0.0.0-20171208185109-cc9eb1d7ad76 h1:eX+pdPPlD279OWgd
 github.com/dsnet/compress v0.0.0-20171208185109-cc9eb1d7ad76/go.mod h1:KjxHHirfLaw19iGT70HvVjHQsL1vq1SRQB4yOsAfy2s=
 github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568 h1:BHsljHzVlRcyQhjrss6TZTdY2VfCqZPbv5k3iBFa2ZQ=
 github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:xEzjJPgXI435gkrCt3MPfRiAkVrwSbHsst4LCFVfpJc=
+github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
+github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db h1:woRePGFeVFfLKN/pOkfl+p/TAqKOfFu+7KPlMVpok/w=
@@ -34,6 +40,8 @@ github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH
 github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
 github.com/hacdias/fileutils v0.0.0-20171121222743-76b1c6ab9067 h1:K2ugN3B7NOrATI7GfXRrwtbyg0OYVR9oNcm1XeTIyY4=
 github.com/hacdias/fileutils v0.0.0-20171121222743-76b1c6ab9067/go.mod h1:lwnswzFVSy7B/k81M5rOLUU0fOBKHrDRIkPIBZd7PBo=
+github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
+github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/kardianos/osext v0.0.0-20170510131534-ae77be60afb1 h1:PJPDf8OUfOK1bb/NeTKd4f1QXZItOX389VN3B6qC8ro=
@@ -43,12 +51,18 @@ github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORN
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@@ -59,18 +73,26 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
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