273 lines
9.0 KiB
Go
273 lines
9.0 KiB
Go
package cmd
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import (
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"crypto/subtle"
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"errors"
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"fmt"
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"github.com/urfave/cli/v2"
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"github.com/urfave/cli/v2/altsrc"
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"heckel.io/ntfy/auth"
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"heckel.io/ntfy/util"
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"strings"
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)
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var flagsUser = userCommandFlags()
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var cmdUser = &cli.Command{
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Name: "user",
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Usage: "Manage/show users",
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UsageText: "ntfy user [list|add|remove|change-pass|change-role] ...",
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Flags: flagsUser,
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Before: initConfigFileInputSource("config", flagsUser),
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Category: categoryServer,
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Subcommands: []*cli.Command{
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{
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Name: "add",
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Aliases: []string{"a"},
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Usage: "Adds a new user",
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UsageText: "ntfy user add [--role=admin|user] USERNAME",
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Action: execUserAdd,
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Flags: []cli.Flag{
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&cli.StringFlag{Name: "role", Aliases: []string{"r"}, Value: string(auth.RoleUser), Usage: "user role"},
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},
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Description: `Add a new user to the ntfy user database.
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A user can be either a regular user, or an admin. A regular user has no read or write access (unless
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granted otherwise by the auth-default-access setting). An admin user has read and write access to all
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topics.
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Examples:
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ntfy user add phil # Add regular user phil
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ntfy user add --role=admin phil # Add admin user phil
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`,
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},
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{
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Name: "remove",
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Aliases: []string{"del", "rm"},
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Usage: "Removes a user",
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UsageText: "ntfy user remove USERNAME",
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Action: execUserDel,
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Description: `Remove a user from the ntfy user database.
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Example:
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ntfy user del phil
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`,
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},
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{
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Name: "change-pass",
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Aliases: []string{"chp"},
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Usage: "Changes a user's password",
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UsageText: "ntfy user change-pass USERNAME",
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Action: execUserChangePass,
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Description: `Change the password for the given user.
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The new password will be read from STDIN, and it'll be confirmed by typing
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it twice.
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Example:
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ntfy user change-pass phil
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`,
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},
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{
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Name: "change-role",
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Aliases: []string{"chr"},
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Usage: "Changes the role of a user",
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UsageText: "ntfy user change-role USERNAME ROLE",
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Action: execUserChangeRole,
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Description: `Change the role for the given user to admin or user.
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This command can be used to change the role of a user either from a regular user
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to an admin user, or the other way around:
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- admin: an admin has read/write access to all topics
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- user: a regular user only has access to what was explicitly granted via 'ntfy access'
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When changing the role of a user to "admin", all access control entries for that
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user are removed, since they are no longer necessary.
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Example:
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ntfy user change-role phil admin # Make user phil an admin
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ntfy user change-role phil user # Remove admin role from user phil
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`,
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},
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{
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Name: "list",
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Aliases: []string{"l"},
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Usage: "Shows a list of users",
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Action: execUserList,
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Description: `Shows a list of all configured users, including the everyone ('*') user.
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This is a server-only command. It directly reads from 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.
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This command is an alias to calling 'ntfy access' (display access control list).
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`,
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},
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},
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Description: `Manage users of 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 access'.
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The command allows you to add/remove/change users in the ntfy user database, as well as change
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passwords or roles.
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Examples:
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ntfy user list # Shows list of users (alias: 'ntfy access')
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ntfy user add phil # Add regular user phil
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ntfy user add --role=admin phil # Add admin user phil
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ntfy user del phil # Delete user phil
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ntfy user change-pass phil # Change password for user phil
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ntfy user change-role phil admin # Make user phil an admin
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`,
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}
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func execUserAdd(c *cli.Context) error {
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username := c.Args().Get(0)
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role := auth.Role(c.String("role"))
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if username == "" {
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return errors.New("username expected, type 'ntfy user add --help' for help")
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} else if username == userEveryone {
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return errors.New("username not allowed")
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} else if !auth.AllowedRole(role) {
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return errors.New("role must be either 'user' or 'admin'")
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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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if user, _ := manager.User(username); user != nil {
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return fmt.Errorf("user %s already exists", username)
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}
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password, err := readPasswordAndConfirm(c)
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if err != nil {
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return err
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}
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if err := manager.AddUser(username, password, role); err != nil {
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return err
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}
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fmt.Fprintf(c.App.ErrWriter, "user %s added with role %s\n", username, role)
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return nil
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}
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func execUserDel(c *cli.Context) error {
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username := c.Args().Get(0)
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if username == "" {
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return errors.New("username expected, type 'ntfy user del --help' for help")
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} else if username == userEveryone {
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return errors.New("username not allowed")
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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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if _, err := manager.User(username); err == auth.ErrNotFound {
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return fmt.Errorf("user %s does not exist", username)
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}
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if err := manager.RemoveUser(username); err != nil {
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return err
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}
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fmt.Fprintf(c.App.ErrWriter, "user %s removed\n", username)
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return nil
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}
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func execUserChangePass(c *cli.Context) error {
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username := c.Args().Get(0)
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if username == "" {
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return errors.New("username expected, type 'ntfy user change-pass --help' for help")
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} else if username == userEveryone {
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return errors.New("username not allowed")
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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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if _, err := manager.User(username); err == auth.ErrNotFound {
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return fmt.Errorf("user %s does not exist", username)
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}
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password, err := readPasswordAndConfirm(c)
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if err != nil {
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return err
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}
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if err := manager.ChangePassword(username, password); err != nil {
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return err
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}
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fmt.Fprintf(c.App.ErrWriter, "changed password for user %s\n", username)
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return nil
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}
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func execUserChangeRole(c *cli.Context) error {
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username := c.Args().Get(0)
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role := auth.Role(c.Args().Get(1))
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if username == "" || !auth.AllowedRole(role) {
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return errors.New("username and new role expected, type 'ntfy user change-role --help' for help")
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} else if username == userEveryone {
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return errors.New("username not allowed")
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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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if _, err := manager.User(username); err == auth.ErrNotFound {
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return fmt.Errorf("user %s does not exist", username)
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}
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if err := manager.ChangeRole(username, role); err != nil {
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return err
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}
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fmt.Fprintf(c.App.ErrWriter, "changed role for user %s to %s\n", username, role)
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return nil
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}
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func execUserList(c *cli.Context) error {
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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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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 createAuthManager(c *cli.Context) (auth.Manager, error) {
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authFile := c.String("auth-file")
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authDefaultAccess := c.String("auth-default-access")
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if authFile == "" {
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return nil, errors.New("option auth-file not set; auth is unconfigured for this server")
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} else if !util.FileExists(authFile) {
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return nil, errors.New("auth-file does not exist; please start the server at least once to create it")
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} else if !util.InStringList([]string{"read-write", "read-only", "write-only", "deny-all"}, authDefaultAccess) {
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return nil, errors.New("if set, auth-default-access must start set to 'read-write', 'read-only' or 'deny-all'")
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}
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authDefaultRead := authDefaultAccess == "read-write" || authDefaultAccess == "read-only"
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authDefaultWrite := authDefaultAccess == "read-write" || authDefaultAccess == "write-only"
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return auth.NewSQLiteAuth(authFile, authDefaultRead, authDefaultWrite)
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}
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func readPasswordAndConfirm(c *cli.Context) (string, error) {
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fmt.Fprint(c.App.ErrWriter, "password: ")
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password, err := util.ReadPassword(c.App.Reader)
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if err != nil {
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return "", err
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}
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fmt.Fprintf(c.App.ErrWriter, "\r%s\rconfirm: ", strings.Repeat(" ", 25))
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confirm, err := util.ReadPassword(c.App.Reader)
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if err != nil {
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return "", err
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}
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fmt.Fprintf(c.App.ErrWriter, "\r%s\r", strings.Repeat(" ", 25))
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if subtle.ConstantTimeCompare(confirm, password) != 1 {
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return "", errors.New("passwords do not match: try it again, but this time type slooowwwlly")
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}
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return string(password), nil
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}
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func userCommandFlags() []cli.Flag {
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return []cli.Flag{
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&cli.StringFlag{Name: "config", Aliases: []string{"c"}, EnvVars: []string{"NTFY_CONFIG_FILE"}, Value: "/etc/ntfy/server.yml", DefaultText: "/etc/ntfy/server.yml", Usage: "config file"},
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altsrc.NewStringFlag(&cli.StringFlag{Name: "auth-file", Aliases: []string{"H"}, EnvVars: []string{"NTFY_AUTH_FILE"}, Usage: "auth database file used for access control"}),
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altsrc.NewStringFlag(&cli.StringFlag{Name: "auth-default-access", Aliases: []string{"p"}, EnvVars: []string{"NTFY_AUTH_DEFAULT_ACCESS"}, Value: "read-write", Usage: "default permissions if no matching entries in the auth database are found"}),
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}
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}
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