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mirror of https://github.com/volatiletech/authboss.git synced 2025-01-10 04:17:59 +02:00
authboss/authboss.go
2018-04-30 18:17:07 -07:00

100 lines
2.7 KiB
Go

/*
Package authboss is a modular authentication system for the web. It tries to
remove as much boilerplate and "hard things" as possible so that each time you
start a new web project in Go, you can plug it in, configure and be off to the
races without having to think about how to store passwords or remember tokens.
*/
package authboss
import (
"context"
"net/http"
"github.com/pkg/errors"
"golang.org/x/crypto/bcrypt"
)
// Authboss contains a configuration and other details for running.
type Authboss struct {
Config
Events *Events
loadedModules map[string]Moduler
}
// New makes a new instance of authboss with a default
// configuration.
func New() *Authboss {
ab := &Authboss{}
ab.loadedModules = make(map[string]Moduler)
ab.Events = NewEvents()
ab.Config.Defaults()
return ab
}
// Init authboss, modules, renderers
func (a *Authboss) Init(modulesToLoad ...string) error {
if len(modulesToLoad) == 0 {
modulesToLoad = RegisteredModules()
}
for _, name := range modulesToLoad {
if err := a.loadModule(name); err != nil {
return errors.Errorf("module %s failed to load: %+v", name, err)
}
}
return nil
}
// UpdatePassword updates the password field of a user using the same semantics
// that register/auth do to create and verify passwords. It saves this using the storer.
//
// In addition to that, it also invalidates any remember me tokens, if the storer supports
// that kind of operation.
//
// If it's also desirable to log the user out, use: authboss.DelKnown(Session|Cookie)
func (a *Authboss) UpdatePassword(ctx context.Context, user AuthableUser, newPassword string) error {
pass, err := bcrypt.GenerateFromPassword([]byte(newPassword), a.Config.Modules.BCryptCost)
if err != nil {
return err
}
user.PutPassword(string(pass))
storer := a.Config.Storage.Server
if err := storer.Save(ctx, user); err != nil {
return err
}
rmStorer, ok := storer.(RememberingServerStorer)
if !ok {
return nil
}
return rmStorer.DelRememberTokens(user.GetPID())
}
// Middleware prevents someone from accessing a route by returning a 404 if they are not logged in.
// This middleware also loads the current user.
func Middleware(ab *Authboss) func(http.Handler) http.Handler {
return func(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
log := ab.RequestLogger(r)
if u, err := ab.LoadCurrentUser(&r); err != nil {
log.Errorf("error fetching current user: %+v", err)
w.WriteHeader(http.StatusInternalServerError)
return
} else if u == nil {
log.Infof("providing not found for unauthorized user at: %s", r.URL.Path)
w.WriteHeader(http.StatusNotFound)
return
} else {
next.ServeHTTP(w, r)
}
})
}
}