219 lines
7.8 KiB
Go
219 lines
7.8 KiB
Go
//go:build !noserver
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package cmd
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import (
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"errors"
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"fmt"
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"github.com/urfave/cli/v2"
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"heckel.io/ntfy/auth"
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"heckel.io/ntfy/util"
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)
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func init() {
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commands = append(commands, cmdAccess)
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}
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const (
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userEveryone = "everyone"
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)
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var flagsAccess = append(
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flagsUser,
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&cli.BoolFlag{Name: "reset", Aliases: []string{"r"}, Usage: "reset access for user (and topic)"},
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)
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var cmdAccess = &cli.Command{
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Name: "access",
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Usage: "Grant/revoke access to a topic, or show access",
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UsageText: "ntfy access [USERNAME [TOPIC [PERMISSION]]]",
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Flags: flagsAccess,
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Before: initConfigFileInputSourceFunc("config", flagsAccess, initLogFunc),
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Action: execUserAccess,
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Category: categoryServer,
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Description: `Manage the access control list for the ntfy server.
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This is a server-only command. It directly manages the user.db as defined in the server config
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file server.yml. The command only works if 'auth-file' is properly defined. Please also refer
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to the related command 'ntfy user'.
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The command allows you to show the access control list, as well as change it, depending on how
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it is called.
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Usage:
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ntfy access # Shows access control list (alias: 'ntfy user list')
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ntfy access USERNAME # Shows access control entries for USERNAME
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ntfy access USERNAME TOPIC PERMISSION # Allow/deny access for USERNAME to TOPIC
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Arguments:
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USERNAME an existing user, as created with 'ntfy user add', or "everyone"/"*"
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to define access rules for anonymous/unauthenticated clients
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TOPIC name of a topic with optional wildcards, e.g. "mytopic*"
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PERMISSION one of the following:
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- read-write (alias: rw)
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- read-only (aliases: read, ro)
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- write-only (aliases: write, wo)
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- deny (alias: none)
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Examples:
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ntfy access # Shows access control list (alias: 'ntfy user list')
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ntfy access phil # Shows access for user phil
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ntfy access phil mytopic rw # Allow read-write access to mytopic for user phil
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ntfy access everyone mytopic rw # Allow anonymous read-write access to mytopic
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ntfy access everyone "up*" write # Allow anonymous write-only access to topics "up..."
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ntfy access --reset # Reset entire access control list
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ntfy access --reset phil # Reset all access for user phil
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ntfy access --reset phil mytopic # Reset access for user phil and topic mytopic
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`,
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}
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func execUserAccess(c *cli.Context) error {
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if c.NArg() > 3 {
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return errors.New("too many arguments, please check 'ntfy access --help' for usage details")
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}
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manager, err := createAuthManager(c)
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if err != nil {
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return err
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}
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username := c.Args().Get(0)
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if username == userEveryone {
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username = auth.Everyone
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}
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topic := c.Args().Get(1)
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perms := c.Args().Get(2)
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reset := c.Bool("reset")
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if reset {
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if perms != "" {
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return errors.New("too many arguments, please check 'ntfy access --help' for usage details")
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}
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return resetAccess(c, manager, username, topic)
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} else if perms == "" {
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if topic != "" {
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return errors.New("invalid syntax, please check 'ntfy access --help' for usage details")
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}
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return showAccess(c, manager, username)
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}
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return changeAccess(c, manager, username, topic, perms)
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}
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func changeAccess(c *cli.Context, manager auth.Manager, username string, topic string, perms string) error {
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if !util.Contains([]string{"", "read-write", "rw", "read-only", "read", "ro", "write-only", "write", "wo", "none", "deny"}, perms) {
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return errors.New("permission must be one of: read-write, read-only, write-only, or deny (or the aliases: read, ro, write, wo, none)")
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}
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read := util.Contains([]string{"read-write", "rw", "read-only", "read", "ro"}, perms)
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write := util.Contains([]string{"read-write", "rw", "write-only", "write", "wo"}, perms)
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user, err := manager.User(username)
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if err == auth.ErrNotFound {
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return fmt.Errorf("user %s does not exist", username)
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} else if user.Role == auth.RoleAdmin {
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return fmt.Errorf("user %s is an admin user, access control entries have no effect", username)
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}
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if err := manager.AllowAccess(username, topic, read, write); err != nil {
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return err
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}
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if read && write {
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fmt.Fprintf(c.App.ErrWriter, "granted read-write access to topic %s\n\n", topic)
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} else if read {
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fmt.Fprintf(c.App.ErrWriter, "granted read-only access to topic %s\n\n", topic)
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} else if write {
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fmt.Fprintf(c.App.ErrWriter, "granted write-only access to topic %s\n\n", topic)
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} else {
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fmt.Fprintf(c.App.ErrWriter, "revoked all access to topic %s\n\n", topic)
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}
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return showUserAccess(c, manager, username)
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}
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func resetAccess(c *cli.Context, manager auth.Manager, username, topic string) error {
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if username == "" {
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return resetAllAccess(c, manager)
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} else if topic == "" {
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return resetUserAccess(c, manager, username)
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}
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return resetUserTopicAccess(c, manager, username, topic)
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}
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func resetAllAccess(c *cli.Context, manager auth.Manager) error {
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if err := manager.ResetAccess("", ""); err != nil {
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return err
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}
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fmt.Fprintln(c.App.ErrWriter, "reset access for all users")
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return nil
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}
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func resetUserAccess(c *cli.Context, manager auth.Manager, username string) error {
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if err := manager.ResetAccess(username, ""); err != nil {
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return err
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}
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fmt.Fprintf(c.App.ErrWriter, "reset access for user %s\n\n", username)
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return showUserAccess(c, manager, username)
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}
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func resetUserTopicAccess(c *cli.Context, manager auth.Manager, username string, topic string) error {
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if err := manager.ResetAccess(username, topic); err != nil {
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return err
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}
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fmt.Fprintf(c.App.ErrWriter, "reset access for user %s and topic %s\n\n", username, topic)
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return showUserAccess(c, manager, username)
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}
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func showAccess(c *cli.Context, manager auth.Manager, username string) error {
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if username == "" {
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return showAllAccess(c, manager)
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}
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return showUserAccess(c, manager, username)
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}
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func showAllAccess(c *cli.Context, manager auth.Manager) error {
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users, err := manager.Users()
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if err != nil {
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return err
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}
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return showUsers(c, manager, users)
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}
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func showUserAccess(c *cli.Context, manager auth.Manager, username string) error {
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users, err := manager.User(username)
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if err == auth.ErrNotFound {
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return fmt.Errorf("user %s does not exist", username)
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} else if err != nil {
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return err
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}
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return showUsers(c, manager, []*auth.User{users})
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}
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func showUsers(c *cli.Context, manager auth.Manager, users []*auth.User) error {
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for _, user := range users {
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fmt.Fprintf(c.App.ErrWriter, "user %s (%s)\n", user.Name, user.Role)
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if user.Role == auth.RoleAdmin {
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fmt.Fprintf(c.App.ErrWriter, "- read-write access to all topics (admin role)\n")
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} else if len(user.Grants) > 0 {
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for _, grant := range user.Grants {
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if grant.AllowRead && grant.AllowWrite {
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fmt.Fprintf(c.App.ErrWriter, "- read-write access to topic %s\n", grant.TopicPattern)
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} else if grant.AllowRead {
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fmt.Fprintf(c.App.ErrWriter, "- read-only access to topic %s\n", grant.TopicPattern)
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} else if grant.AllowWrite {
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fmt.Fprintf(c.App.ErrWriter, "- write-only access to topic %s\n", grant.TopicPattern)
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} else {
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fmt.Fprintf(c.App.ErrWriter, "- no access to topic %s\n", grant.TopicPattern)
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}
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}
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} else {
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fmt.Fprintf(c.App.ErrWriter, "- no topic-specific permissions\n")
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}
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if user.Name == auth.Everyone {
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defaultRead, defaultWrite := manager.DefaultAccess()
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if defaultRead && defaultWrite {
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fmt.Fprintln(c.App.ErrWriter, "- read-write access to all (other) topics (server config)")
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} else if defaultRead {
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fmt.Fprintln(c.App.ErrWriter, "- read-only access to all (other) topics (server config)")
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} else if defaultWrite {
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fmt.Fprintln(c.App.ErrWriter, "- write-only access to all (other) topics (server config)")
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} else {
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fmt.Fprintln(c.App.ErrWriter, "- no access to any (other) topics (server config)")
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}
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}
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}
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return nil
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}
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