96 lines
2.3 KiB
Go
96 lines
2.3 KiB
Go
package main
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import (
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"encoding/json"
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"errors"
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"fmt"
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"net/http"
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"time"
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"github.com/dgrijalva/jwt-go"
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"golang.org/x/crypto/bcrypt"
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)
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var (
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ErrUserNotFound = errors.New("user not found")
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)
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func init() {
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DB.AddTableWithName(User{}, "users").SetKeys(true, "Id")
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}
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// A User is a person that has administrative access to bactdb.
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// Todo: add password
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type User struct {
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Id int64 `json:"id,omitempty"`
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Username string `db:"username" json:"username"`
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Password string `db:"password" json:"-"`
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CreatedAt time.Time `db:"created_at" json:"createdAt"`
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UpdatedAt time.Time `db:"updated_at" json:"updatedAt"`
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DeletedAt NullTime `db:"deleted_at" json:"deletedAt"`
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}
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type UserJSON struct {
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User *User `json:"user"`
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}
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type UsersJSON struct {
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Users []*User `json:"users"`
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}
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func (m *User) String() string {
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return fmt.Sprintf("%v", *m)
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}
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type UserSession struct {
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Token string `json:"token"`
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AccessLevel string `json:"access_level"`
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Genus string `json:"genus"`
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}
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func serveAuthenticateUser(w http.ResponseWriter, r *http.Request) {
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username := r.FormValue("username")
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password := r.FormValue("password")
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user_session, err := dbAuthenticate(username, password)
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if err != nil {
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w.WriteHeader(http.StatusUnauthorized)
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return
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}
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t := jwt.New(jwt.GetSigningMethod("RS256"))
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t.Claims["auth_level"] = user_session.AccessLevel
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t.Claims["genus"] = user_session.Genus
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t.Claims["exp"] = time.Now().Add(time.Minute * 60 * 24).Unix()
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tokenString, err := t.SignedString(signKey)
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if err != nil {
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w.WriteHeader(http.StatusUnauthorized)
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return
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}
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user_session.Token = tokenString
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data, err := json.Marshal(user_session)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "application/json; charset=UTF-8")
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w.Write(data)
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}
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func dbAuthenticate(username string, password string) (*UserSession, error) {
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var users []User
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var user_session UserSession
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if err := DBH.Select(&users, `SELECT * FROM users WHERE username=$1;`, username); err != nil {
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return nil, err
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}
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if len(users) == 0 {
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return nil, ErrUserNotFound
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}
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if err := bcrypt.CompareHashAndPassword([]byte(users[0].Password), []byte(password)); err != nil {
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return nil, err
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}
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user_session.AccessLevel = "read"
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user_session.Genus = "hymenobacter"
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return &user_session, nil
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}
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