Merge pull request 'v2' (#2) from v2 into master

Reviewed-on: #2

addr.go

@@ -0,0 +1,165 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"regexp"
+	"strings"
+
+	log "github.com/sirupsen/logrus"
+)
+
+type Addr string
+
+var (
+	reBox  = regexp.MustCompile(`^[a-zA-Z0-9\-_\.]+$`)
+	rePath = regexp.MustCompile(`^(/){0,1}[a-zA-Z0-9\-_\.]+(/[a-zA-Z0-9\-_\.]+)+$`)
+)
+
+func (a Addr) Box() string {
+	s := strings.Split(string(a), `:`)
+	box := s[0]
+	if reBox.MatchString(box) {
+		return box
+	} else {
+		return ""
+	}
+}
+
+func (a Addr) Path() string {
+	s := strings.Split(string(a), `:`)
+	path := s[1]
+	if rePath.MatchString(path) {
+		return path
+	} else {
+		return ""
+	}
+}
+
+func (a Addr) Append(path string) Addr {
+	newPath := a.Path() + path
+	if rePath.MatchString(newPath) {
+		return Addr(a.Box() + ":" + newPath)
+	} else {
+		return ""
+	}
+}
+
+func (a Addr) BoxExec(cmd string) (string, error) {
+	log.WithFields(log.Fields{"addr": a}).Debugf("starting")
+	defer log.WithFields(log.Fields{"addr": a}).Debugf("done")
+
+	if b, ok := cfg.box[a.Box()]; !ok {
+		err := errors.New("box doesn't exist")
+		log.WithFields(log.Fields{"addr": a, "box": a.Box(), "error": err}).Errorf("")
+		return "", err
+	} else {
+		return b.Exec(cmd)
+	}
+}
+
+func (a Addr) Exec() (string, error) {
+	log.WithFields(log.Fields{"addr": a}).Debugf("starting")
+	defer log.WithFields(log.Fields{"addr": a}).Debugf("done")
+
+	return a.BoxExec(a.Path())
+}
+
+func (a Addr) ValidSnapshots() ([]*ZfsSnapshot, error) {
+	log.WithFields(log.Fields{"addr": a}).Debugf("starting")
+	defer log.WithFields(log.Fields{"addr": a}).Debugf("done")
+
+	if b, ok := cfg.box[a.Box()]; !ok {
+		err := errors.New("box doesn't exist")
+		log.WithFields(log.Fields{"addr": a, "box": a.Box(), "error": err}).Errorf("")
+		return nil, err
+	} else {
+		if fs, ok := b.zfs.filesystems[a.Path()]; ok {
+			return fs.ValidSnapshots(), nil
+		} else {
+			err := errors.New("path doesn't exist")
+			log.WithFields(log.Fields{"addr": a, "error": err}).Errorf("")
+			return nil, err
+		}
+	}
+}
+
+func (a Addr) SetManaged(val bool) error {
+	log.WithFields(log.Fields{"addr": a}).Debugf("starting")
+	defer log.WithFields(log.Fields{"addr": a}).Debugf("done")
+
+	if b, ok := cfg.box[a.Box()]; !ok {
+		err := errors.New("box doesn't exist")
+		log.WithFields(log.Fields{"addr": a, "box": a.Box(), "error": err}).Errorf("")
+		return err
+	} else if fs, ok := b.zfs.filesystems[a.Path()]; !ok {
+		err := errors.New("path doesn't exist")
+		log.WithFields(log.Fields{"addr": a, "path": a.Path(), "error": err}).Errorf("")
+		return err
+	} else {
+		fs.mx.Lock()
+		defer fs.mx.Unlock()
+		if fs.managed != val {
+			var cmd string
+			if val {
+				cmd = fmt.Sprintf("zfs set %s=+ %s", zfsManagedPropertyName, a.Path())
+			} else {
+				cmd = fmt.Sprintf("zfs set %s=- %s", zfsManagedPropertyName, a.Path())
+			}
+			if _, err := b.Exec(cmd); err != nil {
+				log.WithFields(log.Fields{"addr": a, "call": "Exec", "attr": cmd, "error": err}).Errorf("")
+				return err
+			}
+		}
+		fs.managed = val
+		return nil
+	}
+}
+
+func (a Addr) SetBackedUp(val bool) error {
+	log.WithFields(log.Fields{"addr": a}).Debugf("starting")
+	defer log.WithFields(log.Fields{"addr": a}).Debugf("done")
+
+	if b, ok := cfg.box[a.Box()]; !ok {
+		err := errors.New("box doesn't exist")
+		log.WithFields(log.Fields{"addr": a, "box": a.Box(), "error": err}).Errorf("")
+		return err
+	} else if fs, ok := b.zfs.filesystems[a.Path()]; !ok {
+		err := errors.New("path doesn't exist")
+		log.WithFields(log.Fields{"addr": a, "path": a.Path(), "error": err}).Errorf("")
+		return err
+	} else {
+		fs.mx.Lock()
+		defer fs.mx.Unlock()
+		fs.backedUp = val
+		return nil
+	}
+}
+
+func (a Addr) Mkdir() error {
+	log.WithFields(log.Fields{"addr": a}).Debugf("starting")
+	defer log.WithFields(log.Fields{"addr": a}).Debugf("done")
+
+	if b, ok := cfg.box[a.Box()]; !ok {
+		err := errors.New("box doesn't exist")
+		log.WithFields(log.Fields{"addr": a, "box": a.Box(), "error": err}).Errorf("")
+		return err
+	} else {
+		return b.zfs.Mkdir(a.Path())
+	}
+}
+
+func (a Addr) String() string {
+	return string(a)
+}
+
+func (a Addr) Online() bool {
+	log.WithFields(log.Fields{"addr": a}).Debugf("starting")
+	defer log.WithFields(log.Fields{"addr": a}).Debugf("done")
+
+	if b, ok := cfg.box[a.Box()]; !ok {
+		return false
+	} else {
+		return b.online
+	}
+}

admin.go

@@ -0,0 +1,162 @@
+package main
+
+import (
+	"context"
+	"embed"
+	"html/template"
+	"io/fs"
+	"net/http"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/robfig/cron/v3"
+	"github.com/sethvargo/go-password/password"
+	log "github.com/sirupsen/logrus"
+)
+
+type AdminConfig struct {
+	Users   []*User        `json:"users"`
+	Secrets *SecretsConfig `json:"secrets"`
+	Addr    string         `json:"addr"`
+}
+
+type SecretsConfig struct {
+	PasswordPepper    string `json:"password_pepper"`
+	ContextKey        string `json:"context_key"`
+	ContextExpiration int    `json:"context_expiration"`
+	ScryptN           int    `json:"scrypt_n"`
+	ScryptR           int    `json:"scrypt_r"`
+	ScryptP           int    `json:"scrypt_p"`
+}
+
+//go:embed assets
+var assets embed.FS
+
+func NewAdmin() *AdminConfig {
+	log.WithFields(log.Fields{}).Debugf("starting")
+	defer log.WithFields(log.Fields{}).Debugf("done")
+
+	a := &AdminConfig{
+		Addr:    "0.0.0.0:8080",
+		Secrets: NewSecrets(),
+		Users:   make([]*User, 0),
+	}
+
+	return a
+}
+
+func NewSecrets() *SecretsConfig {
+	log.WithFields(log.Fields{}).Debugf("starting")
+	defer log.WithFields(log.Fields{}).Debugf("done")
+
+	pepper, _ := password.Generate(20, 5, 0, false, false)
+	ctx, _ := password.Generate(20, 5, 0, false, false)
+
+	return &SecretsConfig{
+		PasswordPepper:    pepper,
+		ContextKey:        ctx,
+		ContextExpiration: 3600,
+		ScryptN:           32768,
+		ScryptR:           8,
+		ScryptP:           1,
+	}
+}
+
+func (a *AdminConfig) NewAdminUser() {
+	log.WithFields(log.Fields{}).Debugf("starting")
+	defer log.WithFields(log.Fields{}).Debugf("done")
+
+	p, _ := password.Generate(20, 5, 0, false, false)
+	u, _ := NewUser("admin", p)
+
+	a.Users = append(a.Users, u)
+
+	log.WithFields(log.Fields{}).Warnf("Admin user password :  %s", p)
+
+	return
+
+}
+
+func (a *AdminConfig) Run() {
+	log.WithFields(log.Fields{}).Debugf("starting")
+	defer log.WithFields(log.Fields{}).Debugf("done")
+
+	// Create context that listens for the interrupt signal from the OS.
+	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
+	defer stop()
+
+	if !*debug {
+		gin.SetMode(gin.ReleaseMode)
+	}
+
+	r := gin.Default()
+
+	if t, err := template.ParseFS(assets, "assets/templates/*.html"); err != nil {
+		log.WithFields(log.Fields{"call": "template.ParseFS", "error": err}).Errorf("")
+		return
+	} else {
+		r.SetHTMLTemplate(t)
+	}
+
+	r.GET("/", HttpAnyIndex)
+	r.POST("/", HttpAnyIndex)
+
+	r.GET("/ping", func(c *gin.Context) {
+		c.JSON(http.StatusOK, gin.H{
+			"message": "pong",
+		})
+	})
+
+	r.GET("/run", func(c *gin.Context) {
+		cfg.Run()
+		c.JSON(http.StatusOK, gin.H{
+			"message": "done",
+		})
+	})
+
+	fsys, _ := fs.Sub(assets, "assets/static")
+	r.StaticFS("/assets", http.FS(fsys))
+
+	protected := r.Group("p", HttpAuth())
+	protected.GET("test", HttpAnyHome)
+
+	unprotected := r.Group("u", HttpNoAuth())
+	unprotected.GET("signin", HttpAnySignIn)
+	unprotected.POST("signin", HttpAnySignIn)
+
+	srv := &http.Server{
+		Addr:    a.Addr,
+		Handler: r,
+	}
+
+	go func() {
+		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			log.WithFields(log.Fields{"call": "http.ListenAndServe", "attr": a.Addr, "error": err}).Errorf("")
+		}
+	}()
+
+	c := cron.New(cron.WithLocation(time.UTC))
+	if _, err := c.AddFunc("0 * * * *", func() { cfg.Run() }); err != nil {
+		log.WithFields(log.Fields{"call": "cron.AddFunc", "error": err}).Errorf("")
+	}
+	c.Start()
+	log.WithFields(log.Fields{"call": "cron.Start"}).Debugf("cron started")
+
+	// Listen for the interrupt signal.
+	<-ctx.Done()
+
+	// Restore default behavior on the interrupt signal and notify user of shutdown.
+	stop()
+	log.WithFields(log.Fields{"call": "stop"}).Warnf("shutting down")
+
+	// The context is used to inform the server it has 5 seconds to finish
+	// the request it is currently handling
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	if err := srv.Shutdown(ctx); err != nil {
+		log.WithFields(log.Fields{"call": "http.Shutdown", "error": err}).Errorf("shutting down")
+	}
+
+}

assets/backup.sample.json

@@ -0,0 +1,18 @@
+{
+    "schedule":{
+        "hourly":"25h",
+        "daily":"1m",
+        "weekly":"3m",
+        "monthly":"13m"
+    },
+	"box":{},
+	"email":{
+        "active":false
+    },
+	"apps":[],
+	"timezone":"Etc/UTC",
+	"admin":{
+        "addr":":8080"
+    },
+	"debug":true
+}

assets/static/css/bootstrap-reboot.css

@@ -0,0 +1,426 @@
+/*!
+ * Bootstrap Reboot v5.0.2 (https://getbootstrap.com/)
+ * Copyright 2011-2021 The Bootstrap Authors
+ * Copyright 2011-2021 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
+ * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
+ */
+*,
+*::before,
+*::after {
+  box-sizing: border-box;
+}
+
+@media (prefers-reduced-motion: no-preference) {
+  :root {
+    scroll-behavior: smooth;
+  }
+}
+
+body {
+  margin: 0;
+  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
+  font-size: 1rem;
+  font-weight: 400;
+  line-height: 1.5;
+  color: #212529;
+  background-color: #fff;
+  -webkit-text-size-adjust: 100%;
+  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
+}
+
+hr {
+  margin: 1rem 0;
+  color: inherit;
+  background-color: currentColor;
+  border: 0;
+  opacity: 0.25;
+}
+
+hr:not([size]) {
+  height: 1px;
+}
+
+h6, h5, h4, h3, h2, h1 {
+  margin-top: 0;
+  margin-bottom: 0.5rem;
+  font-weight: 500;
+  line-height: 1.2;
+}
+
+h1 {
+  font-size: calc(1.375rem + 1.5vw);
+}
+@media (min-width: 1200px) {
+  h1 {
+    font-size: 2.5rem;
+  }
+}
+
+h2 {
+  font-size: calc(1.325rem + 0.9vw);
+}
+@media (min-width: 1200px) {
+  h2 {
+    font-size: 2rem;
+  }
+}
+
+h3 {
+  font-size: calc(1.3rem + 0.6vw);
+}
+@media (min-width: 1200px) {
+  h3 {
+    font-size: 1.75rem;
+  }
+}
+
+h4 {
+  font-size: calc(1.275rem + 0.3vw);
+}
+@media (min-width: 1200px) {
+  h4 {
+    font-size: 1.5rem;
+  }
+}
+
+h5 {
+  font-size: 1.25rem;
+}
+
+h6 {
+  font-size: 1rem;
+}
+
+p {
+  margin-top: 0;
+  margin-bottom: 1rem;
+}
+
+abbr[title],
+abbr[data-bs-original-title] {
+  -webkit-text-decoration: underline dotted;
+  text-decoration: underline dotted;
+  cursor: help;
+  -webkit-text-decoration-skip-ink: none;
+  text-decoration-skip-ink: none;
+}
+
+address {
+  margin-bottom: 1rem;
+  font-style: normal;
+  line-height: inherit;
+}
+
+ol,
+ul {
+  padding-left: 2rem;
+}
+
+ol,
+ul,
+dl {
+  margin-top: 0;
+  margin-bottom: 1rem;
+}
+
+ol ol,
+ul ul,
+ol ul,
+ul ol {
+  margin-bottom: 0;
+}
+
+dt {
+  font-weight: 700;
+}
+
+dd {
+  margin-bottom: 0.5rem;
+  margin-left: 0;
+}
+
+blockquote {
+  margin: 0 0 1rem;
+}
+
+b,
+strong {
+  font-weight: bolder;
+}
+
+small {
+  font-size: 0.875em;
+}
+
+mark {
+  padding: 0.2em;
+  background-color: #fcf8e3;
+}
+
+sub,
+sup {
+  position: relative;
+  font-size: 0.75em;
+  line-height: 0;
+  vertical-align: baseline;
+}
+
+sub {
+  bottom: -0.25em;
+}
+
+sup {
+  top: -0.5em;
+}
+
+a {
+  color: #0d6efd;
+  text-decoration: underline;
+}
+a:hover {
+  color: #0a58ca;
+}
+
+a:not([href]):not([class]), a:not([href]):not([class]):hover {
+  color: inherit;
+  text-decoration: none;
+}
+
+pre,
+code,
+kbd,
+samp {
+  font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
+  font-size: 1em;
+  direction: ltr /* rtl:ignore */;
+  unicode-bidi: bidi-override;
+}
+
+pre {
+  display: block;
+  margin-top: 0;
+  margin-bottom: 1rem;
+  overflow: auto;
+  font-size: 0.875em;
+}
+pre code {
+  font-size: inherit;
+  color: inherit;
+  word-break: normal;
+}
+
+code {
+  font-size: 0.875em;
+  color: #d63384;
+  word-wrap: break-word;
+}
+a > code {
+  color: inherit;
+}
+
+kbd {
+  padding: 0.2rem 0.4rem;
+  font-size: 0.875em;
+  color: #fff;
+  background-color: #212529;
+  border-radius: 0.2rem;
+}
+kbd kbd {
+  padding: 0;
+  font-size: 1em;
+  font-weight: 700;
+}
+
+figure {
+  margin: 0 0 1rem;
+}
+
+img,
+svg {
+  vertical-align: middle;
+}
+
+table {
+  caption-side: bottom;
+  border-collapse: collapse;
+}
+
+caption {
+  padding-top: 0.5rem;
+  padding-bottom: 0.5rem;
+  color: #6c757d;
+  text-align: left;
+}
+
+th {
+  text-align: inherit;
+  text-align: -webkit-match-parent;
+}
+
+thead,
+tbody,
+tfoot,
+tr,
+td,
+th {
+  border-color: inherit;
+  border-style: solid;
+  border-width: 0;
+}
+
+label {
+  display: inline-block;
+}
+
+button {
+  border-radius: 0;
+}
+
+button:focus:not(:focus-visible) {
+  outline: 0;
+}
+
+input,
+button,
+select,
+optgroup,
+textarea {
+  margin: 0;
+  font-family: inherit;
+  font-size: inherit;
+  line-height: inherit;
+}
+
+button,
+select {
+  text-transform: none;
+}
+
+[role=button] {
+  cursor: pointer;
+}
+
+select {
+  word-wrap: normal;
+}
+select:disabled {
+  opacity: 1;
+}
+
+[list]::-webkit-calendar-picker-indicator {
+  display: none;
+}
+
+button,
+[type=button],
+[type=reset],
+[type=submit] {
+  -webkit-appearance: button;
+}
+button:not(:disabled),
+[type=button]:not(:disabled),
+[type=reset]:not(:disabled),
+[type=submit]:not(:disabled) {
+  cursor: pointer;
+}
+
+::-moz-focus-inner {
+  padding: 0;
+  border-style: none;
+}
+
+textarea {
+  resize: vertical;
+}
+
+fieldset {
+  min-width: 0;
+  padding: 0;
+  margin: 0;
+  border: 0;
+}
+
+legend {
+  float: left;
+  width: 100%;
+  padding: 0;
+  margin-bottom: 0.5rem;
+  font-size: calc(1.275rem + 0.3vw);
+  line-height: inherit;
+}
+@media (min-width: 1200px) {
+  legend {
+    font-size: 1.5rem;
+  }
+}
+legend + * {
+  clear: left;
+}
+
+::-webkit-datetime-edit-fields-wrapper,
+::-webkit-datetime-edit-text,
+::-webkit-datetime-edit-minute,
+::-webkit-datetime-edit-hour-field,
+::-webkit-datetime-edit-day-field,
+::-webkit-datetime-edit-month-field,
+::-webkit-datetime-edit-year-field {
+  padding: 0;
+}
+
+::-webkit-inner-spin-button {
+  height: auto;
+}
+
+[type=search] {
+  outline-offset: -2px;
+  -webkit-appearance: textfield;
+}
+
+/* rtl:raw:
+[type="tel"],
+[type="url"],
+[type="email"],
+[type="number"] {
+  direction: ltr;
+}
+*/
+::-webkit-search-decoration {
+  -webkit-appearance: none;
+}
+
+::-webkit-color-swatch-wrapper {
+  padding: 0;
+}
+
+::file-selector-button {
+  font: inherit;
+}
+
+::-webkit-file-upload-button {
+  font: inherit;
+  -webkit-appearance: button;
+}
+
+output {
+  display: inline-block;
+}
+
+iframe {
+  border: 0;
+}
+
+summary {
+  display: list-item;
+  cursor: pointer;
+}
+
+progress {
+  vertical-align: baseline;
+}
+
+[hidden] {
+  display: none !important;
+}
+
+/*# sourceMappingURL=bootstrap-reboot.css.map */

assets/static/css/bootstrap-reboot.min.css

@@ -0,0 +1,8 @@
+/*!
+ * Bootstrap Reboot v5.0.2 (https://getbootstrap.com/)
+ * Copyright 2011-2021 The Bootstrap Authors
+ * Copyright 2011-2021 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
+ * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
+ */*,::after,::before{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){:root{scroll-behavior:smooth}}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";font-size:1rem;font-weight:400;line-height:1.5;color:#212529;background-color:#fff;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}hr{margin:1rem 0;color:inherit;background-color:currentColor;border:0;opacity:.25}hr:not([size]){height:1px}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem;font-weight:500;line-height:1.2}h1{font-size:calc(1.375rem + 1.5vw)}@media (min-width:1200px){h1{font-size:2.5rem}}h2{font-size:calc(1.325rem + .9vw)}@media (min-width:1200px){h2{font-size:2rem}}h3{font-size:calc(1.3rem + .6vw)}@media (min-width:1200px){h3{font-size:1.75rem}}h4{font-size:calc(1.275rem + .3vw)}@media (min-width:1200px){h4{font-size:1.5rem}}h5{font-size:1.25rem}h6{font-size:1rem}p{margin-top:0;margin-bottom:1rem}abbr[data-bs-original-title],abbr[title]{-webkit-text-decoration:underline dotted;text-decoration:underline dotted;cursor:help;-webkit-text-decoration-skip-ink:none;text-decoration-skip-ink:none}address{margin-bottom:1rem;font-style:normal;line-height:inherit}ol,ul{padding-left:2rem}dl,ol,ul{margin-top:0;margin-bottom:1rem}ol ol,ol ul,ul ol,ul ul{margin-bottom:0}dt{font-weight:700}dd{margin-bottom:.5rem;margin-left:0}blockquote{margin:0 0 1rem}b,strong{font-weight:bolder}small{font-size:.875em}mark{padding:.2em;background-color:#fcf8e3}sub,sup{position:relative;font-size:.75em;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}a{color:#0d6efd;text-decoration:underline}a:hover{color:#0a58ca}a:not([href]):not([class]),a:not([href]):not([class]):hover{color:inherit;text-decoration:none}code,kbd,pre,samp{font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:1em;direction:ltr;unicode-bidi:bidi-override}pre{display:block;margin-top:0;margin-bottom:1rem;overflow:auto;font-size:.875em}pre code{font-size:inherit;color:inherit;word-break:normal}code{font-size:.875em;color:#d63384;word-wrap:break-word}a>code{color:inherit}kbd{padding:.2rem .4rem;font-size:.875em;color:#fff;background-color:#212529;border-radius:.2rem}kbd kbd{padding:0;font-size:1em;font-weight:700}figure{margin:0 0 1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}
+/*# sourceMappingURL=bootstrap-reboot.min.css.map */

assets/static/css/bootstrap-reboot.rtl.css

@@ -0,0 +1,423 @@
+/*!
+ * Bootstrap Reboot v5.0.2 (https://getbootstrap.com/)
+ * Copyright 2011-2021 The Bootstrap Authors
+ * Copyright 2011-2021 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
+ * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
+ */
+*,
+*::before,
+*::after {
+  box-sizing: border-box;
+}
+
+@media (prefers-reduced-motion: no-preference) {
+  :root {
+    scroll-behavior: smooth;
+  }
+}
+
+body {
+  margin: 0;
+  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
+  font-size: 1rem;
+  font-weight: 400;
+  line-height: 1.5;
+  color: #212529;
+  background-color: #fff;
+  -webkit-text-size-adjust: 100%;
+  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
+}
+
+hr {
+  margin: 1rem 0;
+  color: inherit;
+  background-color: currentColor;
+  border: 0;
+  opacity: 0.25;
+}
+
+hr:not([size]) {
+  height: 1px;
+}
+
+h6, h5, h4, h3, h2, h1 {
+  margin-top: 0;
+  margin-bottom: 0.5rem;
+  font-weight: 500;
+  line-height: 1.2;
+}
+
+h1 {
+  font-size: calc(1.375rem + 1.5vw);
+}
+@media (min-width: 1200px) {
+  h1 {
+    font-size: 2.5rem;
+  }
+}
+
+h2 {
+  font-size: calc(1.325rem + 0.9vw);
+}
+@media (min-width: 1200px) {
+  h2 {
+    font-size: 2rem;
+  }
+}
+
+h3 {
+  font-size: calc(1.3rem + 0.6vw);
+}
+@media (min-width: 1200px) {
+  h3 {
+    font-size: 1.75rem;
+  }
+}
+
+h4 {
+  font-size: calc(1.275rem + 0.3vw);
+}
+@media (min-width: 1200px) {
+  h4 {
+    font-size: 1.5rem;
+  }
+}
+
+h5 {
+  font-size: 1.25rem;
+}
+
+h6 {
+  font-size: 1rem;
+}
+
+p {
+  margin-top: 0;
+  margin-bottom: 1rem;
+}
+
+abbr[title],
+abbr[data-bs-original-title] {
+  -webkit-text-decoration: underline dotted;
+  text-decoration: underline dotted;
+  cursor: help;
+  -webkit-text-decoration-skip-ink: none;
+  text-decoration-skip-ink: none;
+}
+
+address {
+  margin-bottom: 1rem;
+  font-style: normal;
+  line-height: inherit;
+}
+
+ol,
+ul {
+  padding-right: 2rem;
+}
+
+ol,
+ul,
+dl {
+  margin-top: 0;
+  margin-bottom: 1rem;
+}
+
+ol ol,
+ul ul,
+ol ul,
+ul ol {
+  margin-bottom: 0;
+}
+
+dt {
+  font-weight: 700;
+}
+
+dd {
+  margin-bottom: 0.5rem;
+  margin-right: 0;
+}
+
+blockquote {
+  margin: 0 0 1rem;
+}
+
+b,
+strong {
+  font-weight: bolder;
+}
+
+small {
+  font-size: 0.875em;
+}
+
+mark {
+  padding: 0.2em;
+  background-color: #fcf8e3;
+}
+
+sub,
+sup {
+  position: relative;
+  font-size: 0.75em;
+  line-height: 0;
+  vertical-align: baseline;
+}
+
+sub {
+  bottom: -0.25em;
+}
+
+sup {
+  top: -0.5em;
+}
+
+a {
+  color: #0d6efd;
+  text-decoration: underline;
+}
+a:hover {
+  color: #0a58ca;
+}
+
+a:not([href]):not([class]), a:not([href]):not([class]):hover {
+  color: inherit;
+  text-decoration: none;
+}
+
+pre,
+code,
+kbd,
+samp {
+  font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
+  font-size: 1em;
+  direction: ltr ;
+  unicode-bidi: bidi-override;
+}
+
+pre {
+  display: block;
+  margin-top: 0;
+  margin-bottom: 1rem;
+  overflow: auto;
+  font-size: 0.875em;
+}
+pre code {
+  font-size: inherit;
+  color: inherit;
+  word-break: normal;
+}
+
+code {
+  font-size: 0.875em;
+  color: #d63384;
+  word-wrap: break-word;
+}
+a > code {
+  color: inherit;
+}
+
+kbd {
+  padding: 0.2rem 0.4rem;
+  font-size: 0.875em;
+  color: #fff;
+  background-color: #212529;
+  border-radius: 0.2rem;
+}
+kbd kbd {
+  padding: 0;
+  font-size: 1em;
+  font-weight: 700;
+}
+
+figure {
+  margin: 0 0 1rem;
+}
+
+img,
+svg {
+  vertical-align: middle;
+}
+
+table {
+  caption-side: bottom;
+  border-collapse: collapse;
+}
+
+caption {
+  padding-top: 0.5rem;
+  padding-bottom: 0.5rem;
+  color: #6c757d;
+  text-align: right;
+}
+
+th {
+  text-align: inherit;
+  text-align: -webkit-match-parent;
+}
+
+thead,
+tbody,
+tfoot,
+tr,
+td,
+th {
+  border-color: inherit;
+  border-style: solid;
+  border-width: 0;
+}
+
+label {
+  display: inline-block;
+}
+
+button {
+  border-radius: 0;
+}
+
+button:focus:not(:focus-visible) {
+  outline: 0;
+}
+
+input,
+button,
+select,
+optgroup,
+textarea {
+  margin: 0;
+  font-family: inherit;
+  font-size: inherit;
+  line-height: inherit;
+}
+
+button,
+select {
+  text-transform: none;
+}
+
+[role=button] {
+  cursor: pointer;
+}
+
+select {
+  word-wrap: normal;
+}
+select:disabled {
+  opacity: 1;
+}
+
+[list]::-webkit-calendar-picker-indicator {
+  display: none;
+}
+
+button,
+[type=button],
+[type=reset],
+[type=submit] {
+  -webkit-appearance: button;
+}
+button:not(:disabled),
+[type=button]:not(:disabled),
+[type=reset]:not(:disabled),
+[type=submit]:not(:disabled) {
+  cursor: pointer;
+}
+
+::-moz-focus-inner {
+  padding: 0;
+  border-style: none;
+}
+
+textarea {
+  resize: vertical;
+}
+
+fieldset {
+  min-width: 0;
+  padding: 0;
+  margin: 0;
+  border: 0;
+}
+
+legend {
+  float: right;
+  width: 100%;
+  padding: 0;
+  margin-bottom: 0.5rem;
+  font-size: calc(1.275rem + 0.3vw);
+  line-height: inherit;
+}
+@media (min-width: 1200px) {
+  legend {
+    font-size: 1.5rem;
+  }
+}
+legend + * {
+  clear: right;
+}
+
+::-webkit-datetime-edit-fields-wrapper,
+::-webkit-datetime-edit-text,
+::-webkit-datetime-edit-minute,
+::-webkit-datetime-edit-hour-field,
+::-webkit-datetime-edit-day-field,
+::-webkit-datetime-edit-month-field,
+::-webkit-datetime-edit-year-field {
+  padding: 0;
+}
+
+::-webkit-inner-spin-button {
+  height: auto;
+}
+
+[type=search] {
+  outline-offset: -2px;
+  -webkit-appearance: textfield;
+}
+
+[type="tel"],
+[type="url"],
+[type="email"],
+[type="number"] {
+  direction: ltr;
+}
+::-webkit-search-decoration {
+  -webkit-appearance: none;
+}
+
+::-webkit-color-swatch-wrapper {
+  padding: 0;
+}
+
+::file-selector-button {
+  font: inherit;
+}
+
+::-webkit-file-upload-button {
+  font: inherit;
+  -webkit-appearance: button;
+}
+
+output {
+  display: inline-block;
+}
+
+iframe {
+  border: 0;
+}
+
+summary {
+  display: list-item;
+  cursor: pointer;
+}
+
+progress {
+  vertical-align: baseline;
+}
+
+[hidden] {
+  display: none !important;
+}
+/*# sourceMappingURL=bootstrap-reboot.rtl.css.map */

assets/static/css/bootstrap-reboot.rtl.min.css

@@ -0,0 +1,8 @@
+/*!
+ * Bootstrap Reboot v5.0.2 (https://getbootstrap.com/)
+ * Copyright 2011-2021 The Bootstrap Authors
+ * Copyright 2011-2021 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
+ * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
+ */*,::after,::before{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){:root{scroll-behavior:smooth}}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";font-size:1rem;font-weight:400;line-height:1.5;color:#212529;background-color:#fff;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}hr{margin:1rem 0;color:inherit;background-color:currentColor;border:0;opacity:.25}hr:not([size]){height:1px}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem;font-weight:500;line-height:1.2}h1{font-size:calc(1.375rem + 1.5vw)}@media (min-width:1200px){h1{font-size:2.5rem}}h2{font-size:calc(1.325rem + .9vw)}@media (min-width:1200px){h2{font-size:2rem}}h3{font-size:calc(1.3rem + .6vw)}@media (min-width:1200px){h3{font-size:1.75rem}}h4{font-size:calc(1.275rem + .3vw)}@media (min-width:1200px){h4{font-size:1.5rem}}h5{font-size:1.25rem}h6{font-size:1rem}p{margin-top:0;margin-bottom:1rem}abbr[data-bs-original-title],abbr[title]{-webkit-text-decoration:underline dotted;text-decoration:underline dotted;cursor:help;-webkit-text-decoration-skip-ink:none;text-decoration-skip-ink:none}address{margin-bottom:1rem;font-style:normal;line-height:inherit}ol,ul{padding-right:2rem}dl,ol,ul{margin-top:0;margin-bottom:1rem}ol ol,ol ul,ul ol,ul ul{margin-bottom:0}dt{font-weight:700}dd{margin-bottom:.5rem;margin-right:0}blockquote{margin:0 0 1rem}b,strong{font-weight:bolder}small{font-size:.875em}mark{padding:.2em;background-color:#fcf8e3}sub,sup{position:relative;font-size:.75em;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}a{color:#0d6efd;text-decoration:underline}a:hover{color:#0a58ca}a:not([href]):not([class]),a:not([href]):not([class]):hover{color:inherit;text-decoration:none}code,kbd,pre,samp{font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:1em;direction:ltr;unicode-bidi:bidi-override}pre{display:block;margin-top:0;margin-bottom:1rem;overflow:auto;font-size:.875em}pre code{font-size:inherit;color:inherit;word-break:normal}code{font-size:.875em;color:#d63384;word-wrap:break-word}a>code{color:inherit}kbd{padding:.2rem .4rem;font-size:.875em;color:#fff;background-color:#212529;border-radius:.2rem}kbd kbd{padding:0;font-size:1em;font-weight:700}figure{margin:0 0 1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:right}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:right;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:right}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}[type=email],[type=number],[type=tel],[type=url]{direction:ltr}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}
+/*# sourceMappingURL=bootstrap-reboot.rtl.min.css.map */

assets/templates/page-signin.html

@@ -0,0 +1,29 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="description" content="">
+    <title>Login :: zBackup</title>
+
+    <!-- Bootstrap core CSS -->
+	<link href="/assets/css/bootstrap.min.css" rel="stylesheet">
+  </head>
+  <body class="text-center">
+	<div class="container">	  
+	  <form class="form-signin" method="POST" action="/u/submit">
+		<h1 class="h3 mb-3 font-weight-normal">Sign in</h1>
+		{{if (ne .Error "")}}<div class="alert alert-danger">{{.Error}}</div>{{end}}
+	    <div class="form-group">
+	      <input type="username" class="form-control" id="username" placeholder="Username" name="username" required autofocus>
+	    </div>
+	    <div class="form-group">
+	      <input type="password" class="form-control" id="pwd" placeholder="Password" name="password" required>
+	    </div>
+	    <button class="btn btn-lg btn-primary btn-block" type="submit" >Sign in</button>
+		<p class="mt-5 mb-3 text-muted">&copy; 2023</p>
+	  </form>
+	  <a href="/u/recover">Lost password</a>
+	</div>
+  </body>
+</html>

backup.go

@@ -3,22 +3,18 @@ package main
 import (
 	"flag"
 	"fmt"
-	"log"
 	"os"
-	"time"
+
+	log "github.com/sirupsen/logrus"
 )
 
 var (
-	appFlag         = flag.String("app", "", "run specific app")
-	cfgFile         = flag.String("config", "config.json", "config file")
-	schedFlag       = flag.String("schedule", "", "specific schedule")
-	slowFlag        = flag.Bool("slow", false, "slow process")
-	testFlag        = flag.Bool("test", false, "test run")
-	debugFlag       = flag.Bool("debug", false, "debug")
-	testMailFlag    = flag.Bool("test-mail", false, "test email setup")
-	stopOnErrorFlag = flag.Bool("stop-on-error", false, "stop processing on error")
-	cfg             Config
-	email           *Email
+	cfgFile  = flag.String("config", "", "config file")
+	isDaemon = flag.Bool("daemon", false, "run as daemon")
+	debug    = flag.Bool("debug", false, "log debug messages")
+	quiet    = flag.Bool("quiet", false, "remove most log messages")
+	logFile  = flag.String("logfile", "", "log file")
+	cfg      *Config
 )
 
 func main() {
@@ -26,70 +22,50 @@ func main() {
 
 	fmt.Printf("backup (%s)\n", version)
 
-	email = new(Email)
-	email.startTime = time.Now()
-	email.items = make([]string, 0)
-
-	err := cfg.Load()
-	if err != nil {
-		log.Printf("Cannot load config (%s)", err)
-		os.Exit(1)
+	if *debug {
+		log.SetLevel(log.DebugLevel)
+	}
+	if *quiet {
+		log.SetLevel(log.WarnLevel)
+	}
+	if *logFile != "" {
+		if f, err := os.OpenFile(*logFile, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0644); err != nil {
+			log.Printf("Cannot open logfile (%s)", err)
+		} else {
+			log.SetOutput(f)
+			defer f.Close()
 		}
 
-	if *testMailFlag {
-		SendMail(cfg.Email.SmtpHost, cfg.Email.FromEmail, "test backup email topic", "test backup email body", cfg.Email.ToEmail)
+	}
+	log.SetReportCaller(true)
+
+	if *cfgFile != "" {
+		if c, err := LoadConfigFile(*cfgFile); err != nil {
+			log.Printf("Cannot load config (%s)", err)
+			os.Exit(1)
+		} else {
+			cfg = c
+		}
+	} else if c, err := LoadConfigFile("backup.json"); err == nil {
+		cfg = c
+	} else {
+		cfg, _ = LoadConfigByte(sampleCfg)
+	}
+
+	if *isDaemon {
+		if cfg.Admin == nil {
+			cfg.Admin = NewAdmin()
+		}
+		if cfg.Admin.Secrets == nil {
+			cfg.Admin.Secrets = NewSecrets()
+		}
+		if len(cfg.Admin.Users) == 0 {
+			cfg.Admin.NewAdminUser()
+		}
+		cfg.Admin.Run()
+	} else {
+		cfg.Run()
 		os.Exit(0)
 	}
 
-	err = RunBackup(*appFlag, *stopOnErrorFlag)
-	if err != nil {
-		log.Printf("Cannot run schedule (%s)", err)
-		os.Exit(1)
-	}
-
-	if len(email.items) > 0 {
-		body := " - " + email.items[0]
-		for _, v := range email.items[1:] {
-			body = body + "\r\n" + " - " + v
-		}
-		SendMail(cfg.Email.SmtpHost, cfg.Email.FromEmail, "Autobackup report", body, cfg.Email.ToEmail)
-		log.Printf("Sending summary email\r\n%v", email.items)
-	}
-}
-
-//RunBackup run all backup targets where schedule is registered
-func RunBackup(app string, stopOnError bool) error {
-	if app == "" {
-		if *debugFlag {
-			log.Printf("RunBackup() : Start")
-		}
-		for _, a := range cfg.Apps {
-			err := a.RunAppBackup()
-			if err != nil {
-				if *debugFlag {
-					log.Printf("RunBackup() : Error running %s", a.Name)
-				}
-				if stopOnError {
-					return err
-				}
-			}
-		}
-	} else {
-		if *debugFlag {
-			log.Printf("RunBackup() : Start %s", app)
-		}
-		for _, a := range cfg.Apps {
-			if a.Name == app {
-				err := a.RunAppBackup()
-				if err != nil {
-					if *debugFlag {
-						log.Printf("RunBackup() : Error running %s", a.Name)
-					}
-					return err
-				}
-			}
-		}
-	}
-
-	return nil
 }

box.go

@@ -1,423 +1,222 @@
 package main
 
 import (
-	"bytes"
-	"encoding/csv"
-	"fmt"
-	"log"
-	"strings"
+	"errors"
+	"regexp"
+	"sync"
+
+	"github.com/silenceper/pool"
+	log "github.com/sirupsen/logrus"
+	"golang.org/x/crypto/ssh"
 )
 
 type Box struct {
-	Addr   string `json:"addr"`
-	User   string `json:"user"`
-	Key    string `json:"key"`
-	Name   string `json:"-"`
-	ssh    *SSHConfig
-	zfs    *ZFSConfig
+	name               string
+	addr               string
+	user               string
+	key                string
+	zfs                *BoxZfs
+	sshPool            pool.Pool
+	created            bool
 	online             bool
+	allowDirectConnect bool
+	mx                 sync.Mutex
 }
 
-func (b *Box) ZFSTakeSnapshot(schedule, path string) (err error) {
-	if *debugFlag {
-		log.Printf("Box.ZFSTakeSnapshot : %s : Taking snapshot on %s for %s", b.Name, path, schedule)
-	}
-
-	if !b.online {
-		err = fmt.Errorf("box offline")
-		return
-	}
-
-	err = b.SnapshotInitialize()
-	if err != nil {
-		return
-	}
-
-	b.zfs.M.Lock()
-	defer b.zfs.M.Unlock()
-
-	timestamp := cfg.Now.Format("2006-01-02_15.04.05")
-	name := fmt.Sprintf("%s-%s--%s", schedule, timestamp, cfg.Zfsnap[schedule])
-	_, err = b.ssh.exec("zfs snapshot " + path + "@" + name)
-
-	if err != nil {
-		return
-	}
-
-	b.zfs.SnapshotAdded = true
-	b.zfs.SnapshotList = append(b.zfs.SnapshotList, Snapshot(path+"@"+name))
-
-	return
+type BoxSshPool struct {
+	signer ssh.Signer
+	config *ssh.ClientConfig
+	client *ssh.Client
+	logged bool
+	mx     sync.Mutex
 }
 
-func (b *Box) ZFSGetLastSnapshot(path string) (last Snapshot, err error) {
-	if *debugFlag {
-		log.Printf("Box.ZFSGetLastSnapshot : %s : Start %s (%d snapshots)", b.Name, path, len(b.zfs.SnapshotList))
+func (c *Config) NewBox(name, addr, user, key string, direct bool) (b *Box, err error) {
+	log.WithFields(log.Fields{"name": name, "addr": addr, "user": user, "key": key}).Debugf("starting")
+	defer log.WithFields(log.Fields{"name": name, "addr": addr, "user": user, "key": key}).Debugf("done")
+
+	re := regexp.MustCompile(boxNamePattern)
+	if !re.MatchString(name) {
+		err := errors.New("invalid name")
+		log.WithFields(log.Fields{"name": b.name, "error": err}).Errorf("")
+		return nil, err
 	}
 
-	if !b.online {
-		err = fmt.Errorf("box offline")
-		return
-	}
-
-	err = b.SnapshotInitialize()
+	p, err := NewSshPool(name, addr, user, key)
 	if err != nil {
-		return last, err
+		log.WithFields(log.Fields{"name": b.name, "call": "NewSshPool", "error": err}).Errorf("")
+		return nil, err
 	}
 
-	b.zfs.M.Lock()
-	defer b.zfs.M.Unlock()
+	b = &Box{
+		name: name,
+		addr: addr,
+		user: user,
+		key:  key,
+		zfs: &BoxZfs{
+			online: false,
+		},
+		sshPool:            p,
+		online:             false,
+		created:            true,
+		allowDirectConnect: true, //FIXME use direct
+	}
 
-	for _, v := range b.zfs.SnapshotList {
-		if v.Path() == path {
-			last = v
-		}
-	}
-	if len(string(last)) == 0 {
-		err = fmt.Errorf("no snapshot")
-	}
-	return
+	b.zfs.box = b
+
+	return b, nil
 }
 
-func (b *Box) ZFSIsLastSnapshot(src Snapshot) (is bool, err error) {
-	if *debugFlag {
-		log.Printf("Box.ZFSIsLastSnapshot : %s : Start %s", b.Name, string(src))
-	}
+func (b *Box) Open() error {
+	log.WithFields(log.Fields{"name": b.name}).Debugf("starting")
+	defer log.WithFields(log.Fields{"name": b.name}).Debugf("done")
 
-	if !b.online {
-		err = fmt.Errorf("box offline")
-		return
-	}
+	b.mx.Lock()
+	defer b.mx.Unlock()
 
-	err = b.SnapshotInitialize()
-	if err != nil {
-		return
-	}
-
-	_, err = b.ZFSGetNextSnapshot(src)
-	if err != nil {
-		if err.Error() == "no snapshot" {
-			is = true
-			err = nil
-		}
-	} else {
-		is = false
-	}
-	return
-}
-
-func (b *Box) ZFSGetFirstSnapshot(path string) (first Snapshot, err error) {
-	if *debugFlag {
-		log.Printf("Box.ZFSGetFirstSnapshot : %s : Start %s", b.Name, path)
-	}
-
-	if !b.online {
-		err = fmt.Errorf("box offline")
-		return
-	}
-
-	err = b.SnapshotInitialize()
-	if err != nil {
-		return
-	}
-
-	b.zfs.M.Lock()
-	defer b.zfs.M.Unlock()
-
-	for _, v := range b.zfs.SnapshotList {
-		if v.Path() == path {
-			first = v
-			return
-		}
-	}
-	err = fmt.Errorf("no snapshot")
-	return
-}
-
-func (b *Box) ZFSGetNextSnapshot(src Snapshot) (next Snapshot, err error) {
-	if *debugFlag {
-		log.Printf("Box.ZFSGetNextSnapshot : %s : Start %s", b.Name, string(src))
-	}
-
-	if !b.online {
-		err = fmt.Errorf("box offline")
-		return
-	}
-
-	err = b.SnapshotInitialize()
-	if err != nil {
-		return
-	}
-
-	b.zfs.M.Lock()
-	defer b.zfs.M.Unlock()
-
-	for id, v := range b.zfs.SnapshotList {
-		if v == src {
-			if len(b.zfs.SnapshotList) > id+1 {
-				next = b.zfs.SnapshotList[id+1]
-				if next.Path() == src.Path() {
-					return
-				} else {
-					err = fmt.Errorf("no snapshot")
-					return
-				}
-			} else {
-				err = fmt.Errorf("no snapshot")
-				return
-			}
-		}
-	}
-	err = fmt.Errorf("no snapshot")
-	return
-}
-
-func (b *Box) ZFSUpdateSnapshotList() (err error) {
-	if *debugFlag {
-		log.Printf("Box.ZFSUpdateSnapshotList : %s : Start", b.Name)
-	}
-
-	if !b.online {
-		err = fmt.Errorf("box offline")
-		return
-	}
-
-	b.zfs.M.Lock()
-	if b.zfs.SnapshotDeleted || b.zfs.SnapshotAdded {
-		b.zfs.SnapshotInitialized = false
-	}
-	b.zfs.M.Unlock()
-
-	err = b.SnapshotInitialize()
-	return
-}
-
-func (b *Box) ZFSGetSnapshotList() (snaps []Snapshot, err error) {
-	if *debugFlag {
-		log.Printf("Box.ZFSGetSnapshotList : %s : Start", b.Name)
-	}
-
-	if !b.online {
-		err = fmt.Errorf("box offline")
-		return
-	}
-
-	err = b.SnapshotInitialize()
-	if err != nil {
-		return
-	}
-
-	b.zfs.M.Lock()
-	defer b.zfs.M.Unlock()
-
-	snaps = b.zfs.SnapshotList
-	return
-}
-
-func (b *Box) SnapshotInitialize() (err error) {
-	if *debugFlag {
-		log.Printf("Box.SnapshotInitialize : %s : Start", b.Name)
-	}
-
-	if !b.online {
-		err = fmt.Errorf("box offline")
-		return
-	}
-
-	b.zfs.M.Lock()
-	defer b.zfs.M.Unlock()
-
-	if b.zfs.SnapshotInitialized {
+	if b.online {
 		return nil
 	}
 
-	if *debugFlag {
-		log.Printf("Box.SnapshotInitialize : %s : Start", b.Name)
-	}
-
-	b.zfs.SnapshotList = make([]Snapshot, 0)
-
-	var buf *bytes.Buffer
-	buf, err = b.SSHExec("zfs list -H -t snapshot -o name")
-
-	csvReader := csv.NewReader(buf)
-	csvReader.Comma = '\t'
-	csvReader.FieldsPerRecord = 1
-
-	csvData, err := csvReader.ReadAll()
+	hostname, err := b.Exec("hostname")
 	if err != nil {
-		if *debugFlag {
-			log.Printf("Box.SnapshotInitialize : %s : csvReader.ReadAll() : %s", b.Name, err)
-		}
+		log.WithFields(log.Fields{"name": b.name, "call": "Exec", "attr": "hostname", "error": err}).Errorf("")
 		return err
 	}
 
-	for _, rec := range csvData {
-		b.zfs.SnapshotList = append(b.zfs.SnapshotList, Snapshot(rec[0]))
-	}
+	log.WithFields(log.Fields{"name": b.name}).Debugf("hostname : %s", hostname)
 
-	if *debugFlag {
-		log.Printf("Box.SnapshotInitialize : %s : read %d zfs snapshots", b.Name, len(b.zfs.SnapshotList))
-	}
+	b.online = true
 
-	b.zfs.SnapshotInitialized = true
-	b.zfs.SnapshotAdded = false
-	b.zfs.SnapshotDeleted = false
-
-	return nil
-}
-
-func (b *Box) ZFSUpdateList() (err error) {
-	if *debugFlag {
-		log.Printf("Box.ZFSUpdateList : %s : Start", b.Name)
-	}
-
-	if !b.online {
-		err = fmt.Errorf("box offline")
-		return
-	}
-
-	b.zfs.M.Lock()
-	if b.zfs.ZFSDeleted || b.zfs.ZFSAdded {
-		b.zfs.ZFSInitialized = false
-	}
-	b.zfs.M.Unlock()
-
-	err = b.ZFSInitialize()
-	return
-}
-
-func (b *Box) ZFSIsZFS(path string) bool {
-	if *debugFlag {
-		log.Printf("Box.ZFSIsZFS : %s : Start %s", b.Name, path)
-	}
-
-	if !b.online {
-		return false
-	}
-
-	err := b.ZFSInitialize()
-	if err != nil {
-		return false
-	}
-
-	b.zfs.M.Lock()
-	defer b.zfs.M.Unlock()
-
-	if _, ok := b.zfs.ZFSMap[path]; ok {
-		return true
-	}
-	return false
-
-}
-
-func (b *Box) ZFSCreateZFS(path string) (err error) {
-	if *debugFlag {
-		log.Printf("Box.ZFSCreateZFS : %s : Start %s", b.Name, path)
-	}
-
-	if !b.online {
-		err = fmt.Errorf("box offline")
-		return
-	}
-
-	err = b.ZFSInitialize()
-	if err != nil {
-		return
-	}
-
-	b.zfs.M.Lock()
-	defer b.zfs.M.Unlock()
-
-	p := strings.Split(path, `/`)
-	var base string
-	for _, d := range p {
-		if base == "" {
-			base = d
-		} else {
-			base = base + `/` + d
-		}
-		if _, ok := b.zfs.ZFSMap[base]; !ok {
-
-			if *debugFlag {
-				log.Printf("Box.ZFSCreateZFS : Creating %s:%s", b.Name, base)
-			}
-
-			_, err = b.SSHExec("zfs create -o mountpoint=none " + base)
-			if err != nil {
-				if *debugFlag {
-					log.Printf("Box.ZFSCreateZFS : %s : SSHExec : %s", b.Name, err)
-				}
-				return
-			}
-
-			b.zfs.ZFSMap[base] = "none"
-			b.zfs.ZFSAdded = true
-		}
-	}
-
-	return
-}
-
-func (b *Box) ZFSInitialize() (err error) {
-	b.zfs.M.Lock()
-	defer b.zfs.M.Unlock()
-	if *debugFlag {
-		log.Printf("Box.ZFSInitialize : %s : Start", b.Name)
-	}
-
-	if !b.online {
-		err = fmt.Errorf("box offline")
-		return
-	}
-
-	if b.zfs.ZFSInitialized {
-		return nil
-	}
-
-	if *debugFlag {
-		log.Printf("Box.ZFSInitialize : %s : Start", b.Name)
-	}
-
-	b.zfs.ZFSMap = make(map[string]string)
-
-	var buf *bytes.Buffer
-	buf, err = b.SSHExec("zfs list -H -o name,mountpoint")
-
-	csvReader := csv.NewReader(buf)
-	csvReader.Comma = '\t'
-	csvReader.FieldsPerRecord = 2
-
-	csvData, err := csvReader.ReadAll()
-	if err != nil {
-		if *debugFlag {
-			log.Printf("Box.ZFSInitialize : %s : csvReader.ReadAll() : %s", b.Name, err)
-		}
+	if err := b.zfs.Open(); err != nil {
+		log.WithFields(log.Fields{"name": b.name, "call": "zfs.Open", "error": err}).Errorf("")
 		return err
 	}
 
-	for _, rec := range csvData {
-		b.zfs.ZFSMap[rec[0]] = rec[1]
+	return nil
+}
+
+func (b *Box) Close() error {
+	log.WithFields(log.Fields{"name": b.name}).Debugf("starting")
+	defer log.WithFields(log.Fields{"name": b.name}).Debugf("done")
+
+	b.mx.Lock()
+	defer b.mx.Unlock()
+
+	if !b.online {
+		return nil
 	}
 
-	b.zfs.ZFSInitialized = true
-	b.zfs.ZFSAdded = false
-	b.zfs.ZFSDeleted = false
+	if err := b.zfs.Close(); err != nil {
+		log.WithFields(log.Fields{"name": b.name, "call": "zfs.Close", "error": err}).Errorf("")
+		return err
+	}
+
+	b.online = false
 
 	return nil
 }
 
-func (b *Box) SSHExec(cmd string) (buf *bytes.Buffer, err error) {
-	if !b.online {
-		err = fmt.Errorf("box offline")
-		return
+func (b *Box) Exec(cmd string) (r string, err error) {
+	log.WithFields(log.Fields{"name": b.name, "cmd": cmd}).Debugf("starting")
+	defer log.WithFields(log.Fields{"name": b.name, "cmd": cmd}).Debugf("done")
+
+	if !b.created {
+		err := errors.New("box not initialized")
+		log.WithFields(log.Fields{"name": b.name, "error": err}).Errorf("")
+		return "", err
 	}
 
-	buf, err = b.ssh.exec(cmd)
-	return
+	v, err := b.sshPool.Get()
+	if err != nil {
+		log.WithFields(log.Fields{"name": b.name, "error": err, "call": "SshPool.Get"}).Errorf("")
+		return "", err
+	}
+
+	defer b.sshPool.Put(v)
+	s := v.(*Ssh)
+
+	return s.Exec(cmd)
 }
 
-func (b *Box) Host() string {
-	s := strings.Split(string(b.Addr), `:`)
-	return s[0]
+func TransferZfs(from, to Addr) error {
+	log.WithFields(log.Fields{"from": from, "to": to}).Debugf("starting")
+	defer log.WithFields(log.Fields{"from": from, "to": to}).Debugf("done")
+
+	var (
+		err                        error
+		fromSnapshots, toSnapshots []*ZfsSnapshot
+		directTransfer             bool
+	)
+
+	if cfg.box[from.Box()].allowDirectConnect && cfg.box[to.Box()].allowDirectConnect {
+		directTransfer = true
+	} else {
+		directTransfer = false
+	}
+
+	if fromSnapshots, err = from.ValidSnapshots(); err != nil {
+		log.WithFields(log.Fields{"from": from, "to": to, "call": "ValidSnapshots", "attr": from, "error": err}).Errorf("")
+		return err
+	}
+
+	if len(fromSnapshots) == 0 {
+		return nil
+	}
+
+	if toSnapshots, err = to.ValidSnapshots(); err != nil {
+		log.WithFields(log.Fields{"from": from, "to": to, "call": "ValidSnapshots", "attr": to, "error": err}).Errorf("")
+		return err
+	}
+
+	if len(toSnapshots) == 0 {
+		log.WithFields(log.Fields{"from": from, "to": to}).Debugf("initiating destination")
+		if directTransfer {
+			if _, err := to.BoxExec("ssh " + from.Box() + " zfs send " + fromSnapshots[0].String() + " | zfs recv -F " + to.Path()); err != nil {
+				log.WithFields(log.Fields{"from": from, "to": to, "call": "BoxExec", "error": err}).Errorf("")
+				return err
+			}
+			newToSnapshot := &ZfsSnapshot{name: fromSnapshots[0].name, fs: cfg.box[to.Box()].zfs.filesystems[to.Path()]}
+			toSnapshots = append(toSnapshots, newToSnapshot)
+			cfg.box[to.Box()].zfs.filesystems[to.Path()].AddSnapshot(newToSnapshot)
+		} else {
+			//handle indirect transfer
+		}
+
+	}
+
+	fromFromSnapshotId := -1
+	lastToSnapshot := toSnapshots[len(toSnapshots)-1]
+	log.WithFields(log.Fields{"from": from, "to": to}).Debugf("searching last snapshot %s", lastToSnapshot.String())
+	for id, v := range fromSnapshots {
+		if v.name == lastToSnapshot.name {
+			fromFromSnapshotId = id
+			log.WithFields(log.Fields{"from": from, "to": to}).Debugf("found %s", v.String())
+			break
+		}
+	}
+
+	if fromFromSnapshotId == -1 {
+		err := errors.New("zfs snapshot unsync")
+		log.WithFields(log.Fields{"from": from, "to": to, "error": err}).Errorf("")
+		return err
+	}
+
+	if fromFromSnapshotId < len(fromSnapshots)-1 {
+		log.WithFields(log.Fields{"from": from, "to": to}).Debugf("transfering from %s to %s", fromSnapshots[fromFromSnapshotId].name, fromSnapshots[len(fromSnapshots)-1].name)
+		if directTransfer {
+			if _, err := to.BoxExec("ssh " + from.Box() + " zfs send -I " + fromSnapshots[fromFromSnapshotId].String() + " " + fromSnapshots[len(fromSnapshots)-1].String() + " | zfs recv -F " + to.Path()); err != nil {
+				log.WithFields(log.Fields{"from": from, "to": to, "call": "BoxExec", "error": err}).Errorf("")
+				return err
+			}
+		} else {
+			// handle indirect transfer
+		}
+
+		for _, v := range fromSnapshots[fromFromSnapshotId+1:] {
+			cfg.box[to.Box()].zfs.filesystems[to.Path()].AddSnapshot(&ZfsSnapshot{name: v.name, fs: cfg.box[to.Box()].zfs.filesystems[to.Path()]})
+		}
+	}
+
+	return nil
 }

config.go

@@ -1,227 +1,287 @@
 package main
 
 import (
-	"bytes"
+	_ "embed"
+
 	"encoding/json"
+	"errors"
 	"fmt"
-	"io/ioutil"
-	"log"
+	"os"
 	"regexp"
+	"sync"
 	"time"
 
-	"golang.org/x/crypto/ssh"
+	log "github.com/sirupsen/logrus"
+	"github.com/tailscale/hujson"
 )
 
 type Config struct {
-	Zfsnap   map[string]string `json:"zfsnap"`
-	Box      map[string]*Box   `json:"box"`
+	ScheduleDuration map[string]string    `json:"schedule"`
+	Box              map[string]BoxConfig `json:"box"`
 	Email            EmailConfig          `json:"email"`
 	Apps             []AppConfig          `json:"apps"`
 	Timezone         string               `json:"timezone"`
-	Now      time.Time         `json:"-"`
+	Admin            *AdminConfig         `json:"admin"`
+	Debug            bool                 `json:"debug"`
+	box              map[string]*Box      `json:"-"`
+	apps             map[string]*App      `json:"-"`
+	timezone         *time.Location       `json:"-"`
 }
 
-//Load config from file
-func (c *Config) Load() error {
-	if *debugFlag {
-		log.Printf("SSHConfig.Load : Start")
-	}
-	b, err := ioutil.ReadFile(*cfgFile)
+var (
+	cfgMx  sync.Mutex
+	cfgRun bool
+)
+
+//go:embed assets/backup.sample.json
+var sampleCfg []byte
+
+type BoxConfig struct {
+	Addr               string `json:"addr"`
+	User               string `json:"user"`
+	Key                string `json:"key"`
+	AllowDirectConnect bool   `json:"allow_direct_connect"`
+}
+
+type AppConfig struct {
+	Name         string            `json:"name"`
+	Schedule     []string          `json:"schedule"`
+	Sources      []string          `json:"src"`
+	Destinations []string          `json:"dest"`
+	Before       map[string]string `json:"before"`
+	After        map[string]string `json:"after"`
+	Active       bool              `json:"active"`
+}
+
+// Load config from file
+func LoadConfigFile(path string) (*Config, error) {
+	log.WithFields(log.Fields{"path": path}).Debugf("starting")
+	defer log.WithFields(log.Fields{"path": path}).Debugf("done")
+
+	b, err := os.ReadFile(path)
 	if err != nil {
-		if *debugFlag {
-			log.Printf("Config.Load : ioutil.ReadFile(%s) : %s", *cfgFile, err)
-		}
-		return err
+		log.WithFields(log.Fields{"path": path, "error": err, "call": "os.ReadFile"}).Errorf("")
+		return nil, err
 	}
 
-	err = json.Unmarshal(b, &c)
+	return LoadConfigByte(b)
+
+}
+
+// Load config from string
+func LoadConfigByte(conf []byte) (*Config, error) {
+	log.WithFields(log.Fields{}).Debugf("starting")
+	defer log.WithFields(log.Fields{}).Debugf("done")
+
+	c := &Config{}
+	if err := json.Unmarshal(sampleCfg, c); err != nil {
+		log.WithFields(log.Fields{"error": err, "call": "json.Unmarshal", "attr": "sampleCfg"}).Errorf("")
+		return nil, err
+	}
+
+	b, err := hujson.Standardize(conf)
 	if err != nil {
-		if *debugFlag {
-			log.Printf("Config.Load : json.Unmarshal : %s", err)
-		}
-		return err
+		log.WithFields(log.Fields{"error": err, "call": "hujson.Standardize"}).Errorf("")
+		return nil, err
 	}
 
-	if *debugFlag {
-		log.Printf("Config.Load :\r\n%v", cfg)
+	if err := json.Unmarshal(b, c); err != nil {
+		log.WithFields(log.Fields{"error": err, "call": "json.Unmarshal"}).Errorf("")
+		return nil, err
 	}
 
-	l, err := time.LoadLocation(cfg.Timezone)
+	c.timezone, err = time.LoadLocation(c.Timezone)
 	if err != nil {
-		if *debugFlag {
-			log.Printf("Config.Load : time.LoadLocation : %s", err)
-		}
-		return err
+		log.WithFields(log.Fields{"error": err, "call": "time.LoadLocation", "attr": cfg.Timezone}).Errorf("")
+		return nil, err
 	}
 
-	if len(cfg.Email.SmtpHost) == 0 {
-		if *debugFlag {
-			log.Printf("Config.Load : no smtp")
-		}
-		return fmt.Errorf("no smtp")
+	if c.Email.Active {
+		if len(c.Email.SmtpHost) == 0 {
+			err := fmt.Errorf("no smtp")
+			log.WithFields(log.Fields{"error": err}).Errorf("")
+			return nil, err
 		}
 
-	if len(cfg.Email.FromEmail) == 0 {
-		if *debugFlag {
-			log.Printf("Config.Load : no email from")
-		}
-		return fmt.Errorf("no email from")
+		if len(c.Email.FromEmail) == 0 {
+			err := fmt.Errorf("no email from")
+			log.WithFields(log.Fields{"error": err}).Errorf("")
+			return nil, err
 		}
 
-	if len(cfg.Email.ToEmail) == 0 {
-		if *debugFlag {
-			log.Printf("Config.Load : no email to")
+		if len(c.Email.ToEmail) == 0 {
+			err := fmt.Errorf("no email to")
+			log.WithFields(log.Fields{"error": err}).Errorf("")
+			return nil, err
 		}
-		return fmt.Errorf("no email to")
 	}
 
-	c.Now = time.Now().In(l)
+	for k, v := range c.ScheduleDuration {
+		switch k {
+		case "hourly":
+		case "daily":
+		case "weekly":
+		case "monthly":
+		case "yearly":
+			if _, err := Expiration(time.Now(), v); err != nil {
+				log.WithFields(log.Fields{"schedule": k, "deadline": v, "error": err}).Errorf("")
+				return nil, err
+			}
+		default:
+			err := errors.New("invalid schedule")
+			log.WithFields(log.Fields{"schedule": k, "deadline": v, "error": err}).Errorf("")
+			return nil, err
+		}
+	}
 
+	c.box = make(map[string]*Box)
 	for k, v := range c.Box {
-		v.Name = k
-		v.online = false
-		v.zfs = NewZFSConfig()
-		s := &SSHConfig{
-			logged: false,
-			name:   k,
+		if b, err := c.NewBox(k, v.Addr, v.User, v.Key, v.AllowDirectConnect); err != nil {
+			log.WithFields(log.Fields{"call": "NewBox", "attr": k, "error": err}).Errorf("")
+			return nil, err
+		} else {
+			if _, ok := c.box[k]; ok {
+				err := errors.New("already exists")
+				log.WithFields(log.Fields{"attr": k, "error": err}).Errorf("")
+				return nil, err
 			}
-		v.ssh = s
-		keyRaw, err := ioutil.ReadFile(v.Key)
-		if err != nil {
-			if *debugFlag {
-				log.Printf("Config.Load : ioutil.ReadFile(%s) : %s", k, err)
+			c.box[k] = b
 		}
-			return err
 	}
 
-		key, err := ssh.ParseRawPrivateKey(keyRaw)
-		if err != nil {
-			if *debugFlag {
-				log.Printf("Config.Load : ssh.ParseRawPrivateKey(%s) : %s", k, err)
+	c.apps = make(map[string]*App)
+	for _, v := range c.Apps {
+		if a, err := c.NewApp(v.Name, v.Sources, v.Destinations, v.Schedule, v.Before, v.After); err != nil {
+			log.WithFields(log.Fields{"call": "NewApp", "attr": v.Name, "error": err}).Errorf("")
+			return nil, err
+		} else {
+			if _, ok := c.apps[v.Name]; ok {
+				err := errors.New("app already exists")
+				log.WithFields(log.Fields{"app": v.Name, "error": err}).Errorf("")
+				return nil, err
 			}
-			return err
-		}
-
-		s.signer, err = ssh.NewSignerFromKey(key)
-		if err != nil {
-			if *debugFlag {
-				log.Printf("Config.Load : ssh.NewSignerFromKey(%s) : %s", k, err)
-			}
-			return err
-		}
-
-		s.config = &ssh.ClientConfig{
-			User: v.User,
-			Auth: []ssh.AuthMethod{
-				ssh.PublicKeys(s.signer),
-			},
-			HostKeyCallback: ssh.InsecureIgnoreHostKey(),
-			Timeout:         5 * time.Second,
-		}
-
-		s.client, err = ssh.Dial("tcp", v.Addr, s.config)
-		if err != nil {
-			if *debugFlag {
-				log.Printf("Config.Load : ssh.Dial(%s) : %s", k, err)
+			c.apps[v.Name] = a
+			for k := range a.schedule {
+				if dur, ok := c.ScheduleDuration[k]; ok {
+					re := regexp.MustCompile(`^forever|([0-9]+(h|d|m|y))+$`)
+					if !re.MatchString(dur) {
+						err := errors.New("incorrect schedule duration")
+						log.WithFields(log.Fields{"app": v.Name, "schedule": k, "error": err}).Errorf("")
+						return nil, err
 					}
 				} else {
-			v.online = true
-			session, err := s.client.NewSession()
-			if err != nil {
-				if *debugFlag {
-					log.Printf("Config.Load : client.NewSession(%s) : %s", k, err)
+					err := errors.New("undefined schedule duration")
+					log.WithFields(log.Fields{"app": v.Name, "schedule": k, "error": err}).Errorf("")
+					return nil, err
 				}
-				return err
-			}
-
-			var b bytes.Buffer
-			session.Stdout = &b
-
-			err = session.Run("TZ=\"" + cfg.Timezone + "\" zfsnap --version")
-			if err != nil {
-				if *debugFlag {
-					log.Printf("Config.Load : client.NewSession(%s) : %s", k, err)
-				}
-				return err
-			}
-			if *debugFlag {
-				log.Printf("Config.Load : logged into %s : %s", k, b.String())
-			}
-			session.Close()
-			s.logged = true
-		}
-	}
-
-	for _, app := range c.Apps {
-		for _, src := range app.Sources {
-			if !src.Valid() {
-				return fmt.Errorf("Source not valid : %s", string(src))
-			}
-			if _, ok := cfg.Box[src.Box()]; !ok {
-				return fmt.Errorf("No box defined for source : %s", string(src))
-			}
-			if !cfg.Box[src.Box()].online {
-				email.items = append(email.items, fmt.Sprintf("Source box offline for app : %s", app.Name))
-			}
-		}
-		var allOffline bool = true
-		for _, dest := range app.Destinations {
-			if !dest.Valid() {
-				return fmt.Errorf("Destination not valid : %s", string(dest))
-			}
-			if _, ok := cfg.Box[dest.Box()]; !ok {
-				return fmt.Errorf("No box defined for destination : %s", string(dest))
-			}
-			if cfg.Box[dest.Box()].online {
-				allOffline = false
-			}
-		}
-		if allOffline {
-			email.items = append(email.items, fmt.Sprintf("No online destination box for app : %s", app.Name))
-		}
-
-		for val, before := range app.Before {
-			_, err = regexp.Compile(val)
-			if err != nil {
-				if *debugFlag {
-					log.Printf("Config.Load : invalid regex : %s", val)
-				}
-				return err
-			}
-			if !before.Valid() {
-				return fmt.Errorf("Before not valid : %s", string(before))
-			}
-			if _, ok := cfg.Box[before.Box()]; !ok {
-				return fmt.Errorf("No box defined for before : %s", string(before))
-			}
-			if !cfg.Box[before.Box()].online {
-				email.items = append(email.items, fmt.Sprintf("Before box offline for app : %s", app.Name))
-			}
-		}
-		for val, after := range app.After {
-			_, err = regexp.Compile(val)
-			if err != nil {
-				if *debugFlag {
-					log.Printf("Config.Load : invalid regex : %s", val)
-				}
-				return err
-			}
-			if !after.Valid() {
-				return fmt.Errorf("After not valid : %s", string(after))
-			}
-			if _, ok := cfg.Box[after.Box()]; !ok {
-				return fmt.Errorf("No box defined for after : %s", string(after))
-			}
-			if !cfg.Box[after.Box()].online {
-				email.items = append(email.items, fmt.Sprintf("After box offline for app : %s", app.Name))
 			}
 		}
 	}
 
-	return nil
+	return c, nil
 }
 
-//Close config
-func (c *Config) Close() error {
-	return nil
+// Run config
+func (c *Config) Run() {
+	log.WithFields(log.Fields{}).Debugf("starting")
+	defer log.WithFields(log.Fields{}).Debugf("done")
+
+	if cfgRun {
+		return
+	}
+
+	cfgMx.Lock()
+	defer cfgMx.Unlock()
+
+	cfgRun = true
+	defer func() { cfgRun = false }()
+
+	e := NewEmail(time.Now())
+
+	var wg sync.WaitGroup
+
+	// Setup boxes
+	for _, b := range c.box {
+		wg.Add(1)
+		go func(box *Box) {
+			defer wg.Done()
+			if err := box.Open(); err != nil {
+				log.WithFields(log.Fields{"name": box.name, "call": "Open", "error": err}).Errorf("")
+				e.AddItem(fmt.Sprintf(" - Box : %s is down", box.name))
+				return
+			}
+		}(b)
+	}
+
+	wg.Wait()
+
+	// Run each app
+	for _, a := range cfg.apps {
+		wg.Add(1)
+		go func(app *App) {
+			if sched, err := app.Run(e.startTime); err != nil {
+				e.AddItem(fmt.Sprintf(" - App : Error running %s (%s)", app.name, err))
+			} else if *debug {
+				if sched != "" {
+					e.AddItem(fmt.Sprintf(" - App : Success backing up %s (%s)", app.name, sched))
+				} else {
+					e.AddItem(fmt.Sprintf(" - App : No backup for %s", app.name))
+				}
+			}
+			wg.Done()
+		}(a)
+	}
+
+	wg.Wait()
+
+	// Cleanup
+	for _, a := range cfg.apps {
+		for _, src := range a.sources {
+			if b, ok := c.box[src.Box()]; ok {
+				if fs, ok := b.zfs.filesystems[src.Path()]; ok {
+					fs.srcApps = append(fs.srcApps, a)
+				}
+			}
+			for _, dest := range a.destinations {
+				if b, ok := c.box[dest.Box()]; ok {
+					dest2 := dest.Append("/" + src.Box() + "/" + src.Path())
+					if fs, ok := b.zfs.filesystems[dest2.Path()]; ok {
+						fs.destApps = append(fs.destApps, a)
+					} else {
+						e.AddItem(fmt.Sprintf(" - Dest : No folder (%s)", dest2.String()))
+					}
+				}
+			}
+		}
+	}
+
+	for _, b := range cfg.box {
+		if b.online {
+			for _, fs := range b.zfs.filesystems {
+				if len(fs.srcApps) > 0 && !fs.backedUp {
+					log.WithFields(log.Fields{"box": b.name, "fs": fs.path}).Warnf("not backed up")
+					e.AddItem(fmt.Sprintf(" - Src : Folder not backed up (%s)", b.name+":"+fs.path))
+				}
+				if len(fs.destApps) == 0 && !fs.backedUp && fs.managed {
+					log.WithFields(log.Fields{"box": b.name, "fs": fs.path}).Warnf("managed")
+					e.AddItem(fmt.Sprintf(" - Dest : Folder managed (%s)", b.name+":"+fs.path))
+				}
+			}
+		}
+	}
+
+	// Stop
+	for _, b := range c.box {
+		if err := b.Close(); err != nil {
+			log.WithFields(log.Fields{"name": b.name, "call": "Close", "error": err}).Errorf("")
+		}
+	}
+
+	if len(e.items) > 0 {
+		if err := e.Send(cfg.Email.SmtpHost, cfg.Email.FromEmail, cfg.Email.ToEmail); err != nil {
+			log.WithFields(log.Fields{"call": "email.Send", "error": err}).Errorf("")
+		}
+	}
+
+	return
 }

const.go

@@ -0,0 +1,13 @@
+package main
+
+const (
+	boxNamePattern = `[a-zA-Z0-9\-_\.]`
+
+	zfsManagedPropertyName = "biz.siteop:managed"
+	zfsSnapshotPattern     = `^(?P<Schedule>hourly|daily|weekly|monthly|yearly|adhoc)\-(?P<Timestamp>[0-9]{4}-[0-9]{2}-[0-9]{2}_[0-9]{2}.[0-9]{2}.[0-9]{2})\-\-(?P<Expiration>forever|([0-9]+(h|d|m|y))+)$`
+	zfsSnapshotDatePattern = "2006-01-02_15.04.05"
+
+	serverAddr     = ":8080"
+	serverUsername = "admin"
+	serverPassword = "8c6976e5b5410415bde908bd4dee15dfb167a9c873fc4bb8a81f6f2ab448a918" //admin
+)

email.go

@@ -2,61 +2,101 @@ package main
 
 import (
 	"encoding/base64"
-	"log"
+	"fmt"
 	"net/smtp"
+	"sort"
 	"strings"
+	"sync"
 	"time"
+
+	log "github.com/sirupsen/logrus"
 )
 
 type Email struct {
 	startTime time.Time
 	items     []string
+	mx        sync.Mutex
 }
 
 type EmailConfig struct {
+	Active    bool     `json:"active"`
 	SmtpHost  string   `json:"smtp"`
 	FromEmail string   `json:"email_from"`
 	ToEmail   []string `json:"email_to"`
 }
 
-func SendMail(addr, from, subject, body string, to []string) error {
-	if *debugFlag {
-		log.Printf("SendMail : Start")
+func NewEmail(now time.Time) *Email {
+	log.WithFields(log.Fields{"now": now}).Debugf("starting")
+	defer log.WithFields(log.Fields{"now": now}).Debugf("done")
+
+	return &Email{startTime: now, items: make([]string, 0)}
+}
+
+func (e *Email) AddItem(item string) {
+	log.WithFields(log.Fields{"item": item}).Debugf("starting")
+	defer log.WithFields(log.Fields{"item": item}).Debugf("done")
+
+	e.items = append(e.items, item)
+}
+
+func (e *Email) Send(addr, from string, to []string) error {
+	log.WithFields(log.Fields{}).Debugf("starting")
+	defer log.WithFields(log.Fields{}).Debugf("done")
+
+	if len(e.items) == 0 {
+		return nil
 	}
+
+	sort.Slice(e.items, func(i, j int) bool {
+		return e.items[i] < e.items[j]
+	})
+
+	body := e.items[0]
+	for _, item := range e.items[1:] {
+		body = body + "\r\n" + item
+	}
+
+	subject := fmt.Sprintf("Autobackup report (%s)", e.startTime)
+
+	if err := SendMail(addr, from, subject, body, to); err != nil {
+		log.WithFields(log.Fields{"addr": addr, "from": from, "subject": subject, "call": "SendMail", "error": err}).Errorf("")
+		return err
+	}
+
+	return nil
+
+}
+
+func SendMail(addr, from, subject, body string, to []string) error {
+	log.WithFields(log.Fields{"addr": addr, "from": from, "subject": subject}).Debugf("starting")
+	defer log.WithFields(log.Fields{"addr": addr, "from": from, "subject": subject}).Debugf("done")
+
 	r := strings.NewReplacer("\r\n", "", "\r", "", "\n", "", "%0a", "", "%0d", "")
 
 	c, err := smtp.Dial(addr)
 	if err != nil {
-		if *debugFlag {
-			log.Printf("SendMail : %s : smtp.Dial (%s)", addr, err)
-		}
+		log.WithFields(log.Fields{"addr": addr, "from": from, "subject": subject, "call": "smtp.Dial", "error": err}).Errorf("")
 		return err
 	}
 
 	defer c.Close()
 
 	if err = c.Mail(r.Replace(from)); err != nil {
-		if *debugFlag {
-			log.Printf("SendMail : %s : client.Mail (%s)", from, err)
-		}
+		log.WithFields(log.Fields{"addr": addr, "from": from, "subject": subject, "call": "client.Mail", "error": err}).Errorf("")
 		return err
 	}
 
 	for i := range to {
 		to[i] = r.Replace(to[i])
 		if err = c.Rcpt(to[i]); err != nil {
-			if *debugFlag {
-				log.Printf("SendMail : %s : client.Rcpt (%s)", to[i], err)
-			}
+			log.WithFields(log.Fields{"addr": addr, "from": from, "subject": subject, "call": "client.Rcpt", "attr": to[i], "error": err}).Errorf("")
 			return err
 		}
 	}
 
 	w, err := c.Data()
 	if err != nil {
-		if *debugFlag {
-			log.Printf("SendMail : client.Data (%s)", err)
-		}
+		log.WithFields(log.Fields{"addr": addr, "from": from, "subject": subject, "call": "client.Date", "error": err}).Errorf("")
 		return err
 	}
 
@@ -68,29 +108,21 @@ func SendMail(addr, from, subject, body string, to []string) error {
 		"Content-Transfer-Encoding: base64\r\n" +
 		"\r\n" + base64.StdEncoding.EncodeToString([]byte(body))
 
-	if *debugFlag {
-		log.Printf("SendMail :\r\n%s", msg)
-	}
-
 	_, err = w.Write([]byte(msg))
 	if err != nil {
-		if *debugFlag {
-			log.Printf("SendMail : writer.Write (%s)", err)
-		}
+		log.WithFields(log.Fields{"addr": addr, "from": from, "subject": subject, "call": "writer.Write", "error": err}).Errorf("")
 		return err
 	}
 
 	err = w.Close()
 	if err != nil {
-		if *debugFlag {
-			log.Printf("SendMail : writer.Close (%s)", err)
-		}
+		log.WithFields(log.Fields{"addr": addr, "from": from, "subject": subject, "call": "writer.Close", "error": err}).Errorf("")
 		return err
 	}
 
-	err = c.Quit()
-	if *debugFlag {
-		log.Printf("SendMail : client.Quit (%s)", err)
-	}
+	if err = c.Quit(); err != nil {
+		log.WithFields(log.Fields{"addr": addr, "from": from, "subject": subject, "call": "client.Quit", "error": err}).Errorf("")
 		return err
+	}
+	return nil
 }

go.mod

@@ -3,6 +3,11 @@ module git.siteop.biz/shoopea/backup
 go 1.16
 
 require (
-	golang.org/x/crypto v0.0.0-20221005025214-4161e89ecf1b
-	golang.org/x/sys v0.0.0-20221006211917-84dc82d7e875 // indirect
+	github.com/gin-gonic/gin v1.9.1 // indirect
+	github.com/robfig/cron/v3 v3.0.1 // indirect
+	github.com/sethvargo/go-password v0.2.0 // indirect
+	github.com/silenceper/pool v1.0.0 // indirect
+	github.com/sirupsen/logrus v1.9.3 // indirect
+	github.com/tailscale/hujson v0.0.0-20221223112325-20486734a56a // indirect
+	golang.org/x/crypto v0.9.0
 )

go.sum

@@ -1,12 +1,143 @@
+github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1O2AihPM=
+github.com/bytedance/sonic v1.9.1 h1:6iJ6NqdoxCDr6mbY8h18oSO+cShGSMRGCEo7F2h0x8s=
+github.com/bytedance/sonic v1.9.1/go.mod h1:i736AoUSYt75HyZLoJW9ERYxcy6eaN6h4BZXU064P/U=
+github.com/chenzhuoyu/base64x v0.0.0-20211019084208-fb5309c8db06/go.mod h1:DH46F32mSOjUmXrMHnKwZdA8wcEefY7UVqBKYGjpdQY=
+github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311 h1:qSGYFH7+jGhDF8vLC+iwCD4WpbV1EBDSzWkJODFLams=
+github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311/go.mod h1:b583jCggY9gE99b6G5LEC39OIiVsWj+R97kbl5odCEk=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/gabriel-vasile/mimetype v1.4.2 h1:w5qFW6JKBz9Y393Y4q372O9A7cUSequkh1Q7OhCmWKU=
+github.com/gabriel-vasile/mimetype v1.4.2/go.mod h1:zApsH/mKG4w07erKIaJPFiX0Tsq9BFQgN3qGY5GnNgA=
+github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE=
+github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm+fLHvGI=
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+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=

http.go

@@ -0,0 +1,67 @@
+package main
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+func HttpAuth() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		// Search signed-in userID
+		userID := 0
+		if userID == 0 {
+			// Return 404 and abort handlers chain.
+			c.String(http.StatusNotFound, "404 page not found")
+			c.AbortWithStatus(http.StatusNotFound)
+			return
+		}
+	}
+}
+
+func HttpNoAuth() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		return
+	}
+}
+
+func HttpAnySignIn(c *gin.Context) {
+	if GetWebSessionUserID(c) > 0 {
+		c.Redirect(http.StatusTemporaryRedirect, "/p/home")
+	} else {
+		SetCSRFToken(c)
+		warning, _ := c.Cookie("warning")
+		c.SetCookie("warning", "", -1, "/", cfg.Admin.Addr, false, true)
+		c.HTML(http.StatusOK, "page-signin.html", gin.H{
+			"Error": warning,
+		})
+	}
+	return
+}
+
+func HttpAnyIndex(c *gin.Context) {
+	if GetWebSessionUserID(c) > 0 {
+		c.Redirect(http.StatusTemporaryRedirect, "/p/home")
+	} else {
+		c.Redirect(http.StatusTemporaryRedirect, "/u/signin")
+	}
+	return
+}
+
+func HttpAnyHome(c *gin.Context) {
+	if GetWebSessionUserID(c) == 0 {
+		c.Redirect(http.StatusTemporaryRedirect, "/u/signin")
+	} else {
+		SetCSRFToken(c)
+		c.HTML(http.StatusOK, "page-home.html", gin.H{})
+	}
+	return
+}
+
+func GetWebSessionUserID(c *gin.Context) int64 {
+	return 0
+}
+
+func SetCSRFToken(c *gin.Context) {
+	return
+}

location.go

@@ -1,20 +1 @@
 package main
-
-import "strings"
-
-type Location string
-
-func (l Location) Box() string {
-	s := strings.Split(string(l), `:`)
-	return s[0]
-}
-
-func (l Location) Path() string {
-	s := strings.Split(string(l), `:`)
-	return s[1]
-}
-
-func (l Location) Valid() bool {
-	s := strings.Split(string(l), `:`)
-	return len(s) == 2
-}

snapshot.go

@@ -1,20 +1,123 @@
 package main
 
-import "strings"
+import (
+	"errors"
+	"regexp"
+	"time"
 
-type Snapshot string
+	log "github.com/sirupsen/logrus"
+)
 
-func (s Snapshot) Path() string {
-	s2 := strings.Split(string(s), `@`)
-	return s2[0]
+func SnapshotName(schedule string, now time.Time) string {
+	log.WithFields(log.Fields{"schedule": schedule, "now": now}).Debugf("starting")
+	log.WithFields(log.Fields{"schedule": schedule, "now": now}).Debugf("done")
+
+	return schedule + "-" + now.Format(zfsSnapshotDatePattern) + "--" + cfg.ScheduleDuration[schedule]
 }
 
-func (s Snapshot) Name() string {
-	s2 := strings.Split(string(s), `@`)
-	return s2[1]
+func (s *ZfsSnapshot) Valid() bool {
+	log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name}).Debugf("starting")
+	defer log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name}).Debugf("done")
+
+	re := regexp.MustCompile(zfsSnapshotPattern)
+	return re.MatchString(s.name)
 }
 
-func (s Snapshot) Append(path string) Snapshot {
-	s2 := strings.Split(string(s), `@`)
-	return Snapshot(s2[0] + "/" + path + "@" + s2[1])
+func (s *ZfsSnapshot) Schedule() (string, error) {
+	log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name}).Debugf("starting")
+	defer log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name}).Debugf("done")
+
+	if !s.Valid() {
+		err := errors.New("invalid name")
+		log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name, "call": "Valid", "error": err}).Errorf("")
+		return "", err
+	}
+
+	re := regexp.MustCompile(zfsSnapshotPattern)
+
+	return re.ReplaceAllString(s.name, "${Schedule}"), nil
+
+}
+
+func (s *ZfsSnapshot) Expiration() (time.Time, error) {
+	log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name}).Debugf("starting")
+	defer log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name}).Debugf("done")
+
+	if !s.Valid() {
+		err := errors.New("invalid name")
+		log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name, "call": "Valid", "error": err}).Errorf("")
+		return time.Now(), err
+	}
+
+	re := regexp.MustCompile(zfsSnapshotPattern)
+
+	expirationString := re.ReplaceAllString(s.name, "${Expiration}")
+
+	timestampTime, err := s.Timestamp()
+	if err != nil {
+		log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name, "call": "Timestamp", "error": err}).Errorf("")
+		return time.Now(), err
+	}
+
+	return Expiration(timestampTime, expirationString)
+
+}
+
+func (s *ZfsSnapshot) Timestamp() (time.Time, error) {
+	log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name}).Debugf("starting")
+	defer log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name}).Debugf("done")
+
+	t := time.Now()
+
+	if !s.Valid() {
+		err := errors.New("invalid name")
+		log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name, "call": "Valid", "error": err}).Errorf("")
+		return t, err
+	}
+
+	re := regexp.MustCompile(zfsSnapshotPattern)
+
+	timestampString := re.ReplaceAllString(s.name, "${Timestamp}")
+	timestampTime, err := time.ParseInLocation(zfsSnapshotDatePattern, timestampString, cfg.timezone)
+	if err != nil {
+		log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name, "call": "time.Parse", "attr": timestampString, "error": err}).Errorf("")
+		return t, err
+	}
+
+	return timestampTime, nil
+}
+
+func (s *ZfsSnapshot) Expired(now time.Time) (bool, error) {
+	log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name}).Debugf("starting")
+	defer log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name}).Debugf("done")
+
+	if !s.Valid() {
+		err := errors.New("invalid name")
+		log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name, "call": "Valid", "error": err}).Errorf("")
+		return false, err
+	}
+
+	expirationTime, err := s.Expiration()
+	if err != nil {
+		log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name, "call": "Timestamp", "error": err}).Errorf("")
+		return false, err
+	}
+
+	if now.After(expirationTime) {
+		return true, nil
+	} else {
+		return false, nil
+	}
+
+}
+
+func (s *ZfsSnapshot) String() string {
+	return s.fs.path + "@" + s.name
+}
+
+func (s *ZfsSnapshot) Delete() error {
+	log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name}).Debugf("starting")
+	defer log.WithFields(log.Fields{"box": s.fs.zfs.box.name, "fs": s.fs.path, "name": s.name}).Debugf("done")
+
+	return s.fs.DelSnapshot(s.name)
 }

ssh.go

@@ -1,47 +1,170 @@
 package main
 
 import (
-	"bytes"
-	"log"
+	"io"
+	"os"
+	"time"
 
+	"github.com/silenceper/pool"
+	log "github.com/sirupsen/logrus"
 	"golang.org/x/crypto/ssh"
 )
 
-type SSHConfig struct {
+const SshDialTimeout = time.Duration(10 * time.Second)
+const SshInactivityTimeout = time.Duration(time.Minute)
+
+type Ssh struct {
+	name    string
 	signer  ssh.Signer
 	config  *ssh.ClientConfig
 	client  *ssh.Client
-	logged   bool
-	name     string
-	snapshot []Snapshot
+	session *ssh.Session
+	in      io.WriteCloser
+	out     io.Reader
+	err     io.Reader
 }
 
-func (s *SSHConfig) exec(cmd string) (b *bytes.Buffer, err error) {
-	if *debugFlag {
-		log.Printf("SSHConfig.exec : %s : Start %s", s.name, cmd)
+func NewSsh(name, addr, user, key string) (*Ssh, error) {
+	log.WithFields(log.Fields{"name": name, "addr": addr, "user": user, "key": key}).Debugf("starting")
+	defer log.WithFields(log.Fields{"name": name, "addr": addr, "user": user, "key": key}).Debugf("done")
+
+	s := &Ssh{
+		name: name,
 	}
 
+	k, err := os.ReadFile(key)
+	if err != nil {
+		log.WithFields(log.Fields{"name": name, "addr": addr, "user": user, "key": key, "call": "os.ReadFile", "error": err}).Errorf("")
+		return s, err
+	}
+
+	parsedKey, err := ssh.ParseRawPrivateKey(k)
+	if err != nil {
+		log.WithFields(log.Fields{"name": name, "addr": addr, "user": user, "key": key, "call": "ssh.ParseRawPrivateKey", "error": err}).Errorf("")
+		return s, err
+	}
+
+	s.signer, err = ssh.NewSignerFromKey(parsedKey)
+	if err != nil {
+		log.WithFields(log.Fields{"name": name, "addr": addr, "user": user, "key": key, "call": "ssh.NewSignerFromKey", "error": err}).Errorf("")
+		return s, err
+	}
+
+	s.config = &ssh.ClientConfig{
+		User: user,
+		Auth: []ssh.AuthMethod{
+			ssh.PublicKeys(s.signer),
+		},
+		HostKeyCallback: ssh.InsecureIgnoreHostKey(),
+		Timeout:         SshDialTimeout,
+	}
+
+	s.client, err = ssh.Dial("tcp", addr, s.config)
+	if err != nil {
+		log.WithFields(log.Fields{"name": name, "addr": addr, "user": user, "key": key, "call": "ssh.Dial", "error": err}).Errorf("")
+		return s, err
+	}
+
+	return s, nil
+
+}
+
+func (s *Ssh) Close() error {
+	log.WithFields(log.Fields{"name": s.name}).Debugf("starting")
+	defer log.WithFields(log.Fields{"name": s.name}).Debugf("done")
+
+	return s.client.Close()
+}
+
+func NewSshPool(name, addr, user, key string) (pool.Pool, error) {
+	log.WithFields(log.Fields{"name": name, "addr": addr, "user": user, "key": key}).Debugf("starting")
+	defer log.WithFields(log.Fields{"name": name, "addr": addr, "user": user, "key": key}).Debugf("done")
+
+	//factory Specify the method to create the connection
+	factory := func() (interface{}, error) { return NewSsh(name, addr, user, key) }
+
+	// close Specify the method to close the connection
+	close := func(v interface{}) error { return v.(*Ssh).Close() }
+
+	// Create a connection pool: Initialize the number of connections to 0, the maximum idle connection is 2, and the maximum concurrent connection is 25
+	poolConfig := &pool.Config{
+		InitialCap: 0,
+		MaxIdle:    2,
+		MaxCap:     25,
+		Factory:    factory,
+		Close:      close,
+		//Ping:       ping,
+		//The maximum idle time of the connection, the connection exceeding this time will be closed, which can avoid the problem of automatic failure when connecting to EOF when idle
+		IdleTimeout: SshInactivityTimeout,
+	}
+
+	return pool.NewChannelPool(poolConfig)
+}
+
+func (s *Ssh) Exec(cmd string) (string, error) {
+	log.WithFields(log.Fields{"name": s.name, "cmd": cmd}).Debugf("starting")
+	defer log.WithFields(log.Fields{"name": s.name, "cmd": cmd}).Debugf("done")
+
+	if err := s.ExecPipe(cmd); err != nil {
+		log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "ssh.ExecPipe", "error": err}).Errorf("")
+		return "", err
+	}
+	defer s.session.Close()
+
+	if err := s.session.Wait(); err != nil {
+		log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "session.Setenv", "error": err}).Errorf("")
+		return "", err
+	}
+
+	buf, err := io.ReadAll(s.out)
+	if err != nil {
+		log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "io.ReadAll", "error": err}).Errorf("")
+		return "", err
+	}
+
+	return string(buf), nil
+
+}
+
+func (s *Ssh) ExecPipe(cmd string) error {
+	log.WithFields(log.Fields{"name": s.name, "cmd": cmd}).Debugf("starting")
+	defer log.WithFields(log.Fields{"name": s.name, "cmd": cmd}).Debugf("done")
+
 	session, err := s.client.NewSession()
 	if err != nil {
-		if *debugFlag {
-			log.Printf("SSHConfig.exec : %s : client().NewSession(%s) : %s", s.name, cmd, err)
+		log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "client.NewSession", "error": err}).Errorf("")
+		return err
 	}
-		return
+	s.session = session
+
+	if s.session.Setenv("TZ", cfg.Timezone); err != nil {
+		log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "session.Setenv", "error": err}).Errorf("")
+		return err
 	}
 
-	var buf bytes.Buffer
-	b = &buf
-	session.Stdout = b
-
-	err = session.Run("TZ=\"" + cfg.Timezone + "\" " + cmd)
-	if err != nil {
-		if *debugFlag {
-			log.Printf("SSHConfig.exec : session(%s).Run(%s) : %s", s.name, cmd, err)
-		}
-		return
+	if s.in, err = s.session.StdinPipe(); err != nil {
+		log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "session.StdinPipe", "error": err}).Errorf("")
+		s.session.Close()
+		return err
 	}
 
-	session.Close()
+	if s.out, err = s.session.StdoutPipe(); err != nil {
+		log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "session.StdoutPipe", "error": err}).Errorf("")
+		s.session.Close()
+		return err
+	}
 
-	return
+	if s.err, err = s.session.StderrPipe(); err != nil {
+		log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "session.StderrPipe", "error": err}).Errorf("")
+		s.session.Close()
+		return err
+	}
+
+	if err = s.session.Start(cmd); err != nil {
+		log.WithFields(log.Fields{"name": s.name, "cmd": cmd, "call": "session.Start", "error": err}).Errorf("")
+		s.session.Close()
+		return err
+	}
+
+	return nil
 }

user.go

@@ -0,0 +1,76 @@
+package main
+
+import (
+	"crypto/hmac"
+	"crypto/rand"
+	"crypto/sha256"
+	"encoding/hex"
+	"errors"
+
+	log "github.com/sirupsen/logrus"
+	"golang.org/x/crypto/scrypt"
+)
+
+type User struct {
+	Username string `json:"username"`
+	Salt     string `json:"salt"`
+	Passwd   string `json:"passwd"`
+}
+
+func NewUser(name, passwd string) (*User, error) {
+	log.WithFields(log.Fields{"name": name}).Debugf("starting")
+	defer log.WithFields(log.Fields{"name": name}).Debugf("done")
+
+	for _, v := range cfg.Admin.Users {
+		if v.Username == name {
+			err := errors.New("user already exists")
+			log.WithFields(log.Fields{"name": name, "error": err}).Errorf("")
+			return nil, err
+		}
+	}
+
+	u := &User{
+		Username: name,
+	}
+
+	salt := make([]byte, 32)
+	if _, err := rand.Read(salt); err != nil {
+		log.WithFields(log.Fields{"name": name, "call": "rand.Read", "error": err}).Errorf("")
+		return nil, err
+	}
+	u.Salt = hex.EncodeToString(salt)
+
+	if pass, err := u.HashPassword(passwd); err != nil {
+		log.WithFields(log.Fields{"name": name, "call": "HashPassword", "error": err}).Errorf("")
+		return nil, err
+	} else {
+		u.Passwd = hex.EncodeToString(pass)
+	}
+
+	return u, nil
+}
+
+func (u *User) HashPassword(passwd string) ([]byte, error) {
+	log.WithFields(log.Fields{}).Debugf("starting")
+	defer log.WithFields(log.Fields{}).Debugf("done")
+
+	//peppering the pass
+	hash := hmac.New(sha256.New, []byte(cfg.Admin.Secrets.PasswordPepper))
+	hash.Write([]byte(passwd))
+	hashPass := hash.Sum(nil)
+
+	//salting the hash
+	salt := make([]byte, 32)
+	if _, err := hex.Decode(salt, []byte(u.Salt)); err != nil {
+		log.WithFields(log.Fields{"call": "hex.Decode", "error": err}).Errorf("")
+		return nil, err
+	}
+
+	if h, err := scrypt.Key(hashPass, salt, cfg.Admin.Secrets.ScryptN, cfg.Admin.Secrets.ScryptR, cfg.Admin.Secrets.ScryptP, 32); err != nil {
+		log.WithFields(log.Fields{"call": "scrypt.Key", "error": err}).Errorf("")
+		return h, err
+	} else {
+		return h, nil
+	}
+
+}

utils.go

@@ -0,0 +1,41 @@
+package main
+
+import (
+	"errors"
+	"regexp"
+	"strconv"
+	"time"
+
+	log "github.com/sirupsen/logrus"
+)
+
+func Expiration(now time.Time, deadline string) (time.Time, error) {
+	log.WithFields(log.Fields{"now": now, "deadline": deadline}).Debugf("starting")
+	defer log.WithFields(log.Fields{"now": now, "deadline": deadline}).Debugf("done")
+
+	if deadline == "forever" {
+		return time.Unix(1<<63-1, 0), nil
+	}
+
+	reExpiration := regexp.MustCompile(`([0-9]+)([a-z]+)`)
+	for _, v := range reExpiration.FindAllStringSubmatch(deadline, -1) {
+		log.WithFields(log.Fields{"now": now, "deadline": deadline}).Debugf("duration[%d] : %v", len(v), v)
+		count, _ := strconv.Atoi(v[1])
+		switch v[2] {
+		case "y":
+			now = now.AddDate(count, 0, 0)
+		case "m":
+			now = now.AddDate(0, count, 0)
+		case "d":
+			now = now.AddDate(0, 0, count)
+		case "h":
+			now = now.Add(time.Duration(time.Duration(count) * time.Hour))
+		default:
+			err := errors.New("invalid duration")
+			log.WithFields(log.Fields{"now": now, "deadline": deadline, "attr": v[2], "error": err}).Errorf("")
+			return time.Now(), err
+		}
+	}
+
+	return now, nil
+}

version.go

@@ -1,6 +1,7 @@
 // Code generated by version.sh (@generated) DO NOT EDIT.
 package main
-var githash = "7f9cf49"
-var buildstamp = "2022-10-08_03:14:52"
-var commits = "54"
-var version = "7f9cf49-b54 - 2022-10-08_03:14:52"
+var githash = "1a1713e"
+var branch = "v2"
+var buildstamp = "2023-08-21_12:35:47"
+var commits = "83"
+var version = "1a1713e-b83 - 2023-08-21_12:35:47"

version.sh

@@ -1,12 +1,14 @@
 # Get the version.
 githash=`git rev-parse --short HEAD`
+branch=`git rev-parse --abbrev-ref HEAD`
 buildstamp=`date -u '+%Y-%m-%d_%H:%M:%S'`
-commits=`git rev-list --count master`
+commits=`git rev-list --count $branch`
 # Write out the package.
 cat << EOF > version.go
 // Code generated by version.sh (@generated) DO NOT EDIT.
 package main
 var githash = "$githash"
+var branch = "$branch"
 var buildstamp = "$buildstamp"
 var commits = "$commits"
 var version = "$githash-b$commits - $buildstamp"

zfs.go

@@ -1,27 +1,329 @@
 package main
 
-import "sync"
+import (
+	"bytes"
+	"encoding/csv"
+	"errors"
+	"fmt"
+	"regexp"
+	"sort"
+	"strings"
+	"sync"
 
-type ZFSConfig struct {
-	SnapshotAdded       bool
-	SnapshotDeleted     bool
-	SnapshotInitialized bool
-	SnapshotList        []Snapshot
-	ZFSAdded            bool
-	ZFSDeleted          bool
-	ZFSInitialized      bool
-	ZFSMap              map[string]string
-	M                   sync.Mutex
+	log "github.com/sirupsen/logrus"
+)
+
+type BoxZfs struct {
+	filesystems map[string]*ZfsFs
+	box         *Box
+	online      bool
+	mx          sync.Mutex
 }
 
-func NewZFSConfig() (z *ZFSConfig) {
-	z = &ZFSConfig{
-		SnapshotAdded:       false,
-		SnapshotDeleted:     false,
-		SnapshotInitialized: false,
-		ZFSAdded:            false,
-		ZFSDeleted:          false,
-		ZFSInitialized:      false,
+type ZfsFs struct {
+	path      string
+	managed   bool
+	backedUp  bool
+	zfs       *BoxZfs
+	snapshots map[string]*ZfsSnapshot
+	srcApps   []*App
+	destApps  []*App
+	mx        sync.Mutex
+}
+
+type ZfsSnapshot struct {
+	name string
+	fs   *ZfsFs
+}
+
+func (z *BoxZfs) Open() error {
+	log.WithFields(log.Fields{"name": z.box.name}).Debugf("starting")
+	defer log.WithFields(log.Fields{"name": z.box.name}).Debugf("done")
+
+	z.mx.Lock()
+	defer z.mx.Unlock()
+
+	if z.online {
+		return nil
 	}
-	return
+
+	z.filesystems = make(map[string]*ZfsFs)
+
+	zfsList, err := z.box.Exec("zfs list -H -t filesystem -o name,mountpoint")
+	if err != nil {
+		log.WithFields(log.Fields{"name": z.box.name, "call": "Exec", "attr": "zfs list -H -t filesystem -o name,mountpoint", "error": err}).Errorf("")
+		return err
+	}
+
+	csvReader := csv.NewReader(bytes.NewBufferString(zfsList))
+	csvReader.Comma = '\t'
+	csvReader.FieldsPerRecord = 2
+
+	csvData, err := csvReader.ReadAll()
+	if err != nil {
+		log.WithFields(log.Fields{"name": z.box.name, "call": "csvReader.ReadAll", "error": err}).Errorf("")
+		return err
+	}
+
+	for _, rec := range csvData {
+		log.WithFields(log.Fields{"name": z.box.name, "zfs-name": rec[0], "zfs-mount": rec[1]}).Debugf("zfs list -t filesystem")
+		if rec[1] != "legacy" {
+			fs := &ZfsFs{
+				path:      rec[0],
+				zfs:       z,
+				snapshots: make(map[string]*ZfsSnapshot),
+			}
+			z.filesystems[rec[0]] = fs
+			log.WithFields(log.Fields{"name": z.box.name, "fs": rec[0]}).Infof("new filesystem")
+		}
+	}
+
+	log.WithFields(log.Fields{"name": z.box.name, "call": "csvReader.ReadAll"}).Infof("")
+
+	zfsList, err = z.box.Exec("zfs list -H -t snapshot -o name")
+	if err != nil {
+		log.WithFields(log.Fields{"name": z.box.name, "call": "Exec", "attr": "zfs list -H -t snapshot -o name", "error": err}).Errorf("")
+		return err
+	}
+
+	csvReader = csv.NewReader(bytes.NewBufferString(zfsList))
+	csvReader.Comma = '\t'
+	csvReader.FieldsPerRecord = 1
+
+	csvData, err = csvReader.ReadAll()
+	if err != nil {
+		log.WithFields(log.Fields{"name": z.box.name, "call": "csvReader.ReadAll", "error": err}).Errorf("")
+		return err
+	}
+
+	for _, rec := range csvData {
+		log.WithFields(log.Fields{"name": z.box.name, "zfs-snapshot": rec[0]}).Debugf("zfs list -t snapshot")
+
+		s := strings.Split(rec[0], `@`)
+		if fs, ok := z.filesystems[s[0]]; ok {
+			snap := &ZfsSnapshot{
+				name: s[1],
+				fs:   fs,
+			}
+			fs.snapshots[s[1]] = snap
+			log.WithFields(log.Fields{"name": z.box.name, "fs": s[0], "snapshot": s[1]}).Infof("new snapshot")
+		}
+	}
+
+	zfsList, err = z.box.Exec("zfs get -H -o name,value " + zfsManagedPropertyName)
+	if err != nil {
+		log.WithFields(log.Fields{"name": z.box.name, "call": "Exec", "attr": "zfs get -H -o name,value,source " + zfsManagedPropertyName, "error": err}).Errorf("")
+		return err
+	}
+
+	csvReader = csv.NewReader(bytes.NewBufferString(zfsList))
+	csvReader.Comma = '\t'
+	csvReader.FieldsPerRecord = 2
+
+	csvData, err = csvReader.ReadAll()
+	if err != nil {
+		log.WithFields(log.Fields{"name": z.box.name, "call": "csvReader.ReadAll", "error": err}).Errorf("")
+		return err
+	}
+
+	for _, rec := range csvData {
+		log.WithFields(log.Fields{"name": z.box.name, "zfs-fs": rec[0], "zfs-value": rec[1]}).Debugf("zfs get " + zfsManagedPropertyName)
+
+		if fs, ok := z.filesystems[rec[0]]; ok {
+			if rec[1] == "+" {
+				fs.managed = true
+				log.WithFields(log.Fields{"name": z.box.name, "zfs-fs": rec[0], "zfs-value": rec[1]}).Infof("managed fs")
+			}
+		}
+	}
+
+	z.online = true
+
+	return nil
+}
+
+func (z *BoxZfs) Close() error {
+	log.WithFields(log.Fields{"name": z.box.name}).Debugf("starting")
+	defer log.WithFields(log.Fields{"name": z.box.name}).Debugf("done")
+
+	z.mx.Lock()
+	defer z.mx.Unlock()
+
+	for _, fs := range z.filesystems {
+		fs.mx.Lock()
+		defer fs.mx.Unlock()
+	}
+
+	z.online = false
+
+	return nil
+}
+
+func (z *BoxZfs) Mkdir(path string) error {
+	log.WithFields(log.Fields{"name": z.box.name}).Debugf("starting")
+	defer log.WithFields(log.Fields{"name": z.box.name}).Debugf("done")
+
+	if !z.online {
+		err := errors.New("zfs offline")
+		log.WithFields(log.Fields{"name": z.box.name, "error": err}).Errorf("")
+		return err
+	}
+
+	z.mx.Lock()
+	defer z.mx.Unlock()
+
+	b := z.box
+	if !b.online {
+		err := errors.New("box offline")
+		log.WithFields(log.Fields{"name": z.box.name, "error": err}).Errorf("")
+		return err
+	}
+
+	if _, ok := z.filesystems[path]; ok {
+		return nil
+	}
+
+	if _, err := b.Exec(fmt.Sprintf("zfs create -p %s", path)); err != nil {
+		log.WithFields(log.Fields{"name": z.box.name, "call": "Exec", "error": err}).Errorf("")
+		return err
+	}
+
+	newPath := ""
+	for _, p := range strings.Split(path, "/") {
+		if newPath == "" {
+			newPath = p
+		} else {
+			newPath = newPath + "/" + p
+		}
+
+		if _, ok := z.filesystems[newPath]; !ok {
+			fs := &ZfsFs{
+				path:      newPath,
+				managed:   false,
+				zfs:       z,
+				snapshots: make(map[string]*ZfsSnapshot),
+				srcApps:   make([]*App, 0),
+				destApps:  make([]*App, 0),
+			}
+			z.filesystems[newPath] = fs
+		}
+
+	}
+
+	return nil
+}
+
+func (fs *ZfsFs) TakeSnapshot(name string) (*ZfsSnapshot, error) {
+	log.WithFields(log.Fields{"box": fs.zfs.box.name, "fs": fs.path, "name": name}).Debugf("starting")
+	defer log.WithFields(log.Fields{"box": fs.zfs.box.name, "fs": fs.path, "name": name}).Debugf("done")
+
+	if !fs.zfs.online {
+		err := errors.New("zfs offline")
+		log.WithFields(log.Fields{"box": fs.zfs.box.name, "fs": fs.path, "name": name, "error": err}).Errorf("")
+		return nil, err
+	}
+
+	re := regexp.MustCompile(`^[a-zA-Z0-9\-\._]{1,255}$`)
+	if !re.MatchString(name) {
+		err := errors.New("unsupported name")
+		log.WithFields(log.Fields{"box": fs.zfs.box.name, "fs": fs.path, "name": name, "error": err}).Errorf("")
+		return nil, err
+	}
+
+	fs.mx.Lock()
+	defer fs.mx.Unlock()
+
+	if _, ok := fs.snapshots[name]; ok {
+		err := errors.New("already exists")
+		log.WithFields(log.Fields{"box": fs.zfs.box.name, "fs": fs.path, "name": name, "error": err}).Errorf("")
+		return nil, err
+	}
+
+	if _, err := fs.zfs.box.Exec("zfs snapshot " + fs.path + "@" + name); err != nil {
+		log.WithFields(log.Fields{"box": fs.zfs.box.name, "fs": fs.path, "name": name, "error": err}).Errorf("")
+		return nil, err
+	}
+
+	s := &ZfsSnapshot{
+		name: name,
+		fs:   fs,
+	}
+
+	fs.snapshots[name] = s
+
+	return s, nil
+}
+
+func (fs *ZfsFs) DelSnapshot(name string) error {
+	log.WithFields(log.Fields{"box": fs.zfs.box.name, "fs": fs.path, "name": name}).Debugf("starting")
+	defer log.WithFields(log.Fields{"box": fs.zfs.box.name, "fs": fs.path, "name": name}).Debugf("done")
+
+	if !fs.zfs.online {
+		err := errors.New("zfs offline")
+		log.WithFields(log.Fields{"box": fs.zfs.box.name, "fs": fs.path, "name": name, "error": err}).Errorf("")
+		return err
+	}
+
+	fs.mx.Lock()
+	defer fs.mx.Unlock()
+
+	if _, ok := fs.snapshots[name]; !ok {
+		err := errors.New("doesn't exist")
+		log.WithFields(log.Fields{"box": fs.zfs.box.name, "fs": fs.path, "name": name, "error": err}).Errorf("")
+		return err
+	}
+
+	log.WithFields(log.Fields{"box": fs.zfs.box.name, "fs": fs.path, "name": name}).Debugf("zfs destroy " + fs.path + "@" + name)
+
+	if _, err := fs.zfs.box.Exec("zfs destroy " + fs.path + "@" + name); err != nil {
+		log.WithFields(log.Fields{"box": fs.zfs.box.name, "fs": fs.path, "name": name, "error": err}).Errorf("")
+		return err
+	}
+
+	delete(fs.snapshots, name)
+
+	return nil
+
+}
+
+func (fs *ZfsFs) AddSnapshot(s *ZfsSnapshot) error {
+	log.WithFields(log.Fields{"box": fs.zfs.box.name, "fs": fs.path, "name": s.name}).Debugf("starting")
+	defer log.WithFields(log.Fields{"box": fs.zfs.box.name, "fs": fs.path, "name": s.name}).Debugf("done")
+
+	if !fs.zfs.online {
+		err := errors.New("zfs offline")
+		log.WithFields(log.Fields{"box": fs.zfs.box.name, "fs": fs.path, "name": s.name, "error": err}).Errorf("")
+		return err
+	}
+
+	fs.mx.Lock()
+	defer fs.mx.Unlock()
+
+	if _, ok := fs.snapshots[s.name]; ok {
+		err := errors.New("already exist")
+		log.WithFields(log.Fields{"box": fs.zfs.box.name, "fs": fs.path, "name": s.name, "error": err}).Errorf("")
+		return err
+	}
+
+	fs.snapshots[s.name] = s
+
+	return nil
+}
+
+func (fs *ZfsFs) ValidSnapshots() []*ZfsSnapshot {
+	tab := make([]*ZfsSnapshot, 0)
+
+	for _, s := range fs.snapshots {
+		if s.Valid() {
+			tab = append(tab, s)
+		}
+	}
+
+	sort.Slice(tab, func(i, j int) bool {
+		ti, _ := tab[i].Timestamp()
+		tj, _ := tab[j].Timestamp()
+		return ti.Before(tj)
+	})
+
+	return tab
 }