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/
select_password.go
153 lines (131 loc) · 4.51 KB
/
select_password.go
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// Copyright 2020 the Exposure Notifications Verification Server authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package login defines the controller for the login page.
package login
import (
"context"
"fmt"
"net/http"
"time"
"unicode"
"github.com/google/exposure-notifications-server/pkg/logging"
"github.com/google/exposure-notifications-verification-server/internal/project"
"github.com/google/exposure-notifications-verification-server/pkg/controller"
"github.com/google/exposure-notifications-verification-server/pkg/controller/flash"
)
func (c *Controller) HandleShowSelectNewPassword() http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
session := controller.SessionFromContext(ctx)
flash := flash.New(session.Values)
code := r.FormValue("oobCode")
if code == "" {
flash.Error("Missing password reset token.")
c.renderShowSelectPassword(ctx, w, "", code, true)
return
}
email, err := c.authProvider.VerifyPasswordResetCode(ctx, code)
if err != nil {
flash.Error("Failed to verify password reset token: %v", err)
c.renderShowSelectPassword(ctx, w, "", code, true)
return
}
c.renderShowSelectPassword(ctx, w, email, code, false)
})
}
func (c *Controller) renderShowSelectPassword(ctx context.Context, w http.ResponseWriter, email, code string, codeInvalid bool) {
m := controller.TemplateMapFromContext(ctx)
m.Title("Change password")
m["email"] = email
m["code"] = code
m["codeInvalid"] = codeInvalid
m["requirements"] = &c.config.PasswordRequirements
c.h.RenderHTML(w, "login/select-password", m)
}
func (c *Controller) HandleSubmitNewPassword() http.Handler {
type FormData struct {
Password string `form:"password"`
Email string `form:"email"`
}
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
logger := logging.FromContext(ctx).Named("login.HandleSubmitNewPassword")
session := controller.SessionFromContext(ctx)
if session == nil {
controller.MissingSession(w, r, c.h)
return
}
flash := controller.Flash(session)
code := r.FormValue("oobCode")
var form FormData
if err := controller.BindForm(w, r, &form); err != nil {
flash.Error("Select password failed: %v", err)
w.WriteHeader(http.StatusUnprocessableEntity)
c.renderShowSelectPassword(ctx, w, "", code, false)
return
}
email := project.TrimSpace(form.Email)
if err := c.validateComplexity(form.Password); err != nil {
flash.Error("Select password failed: %v", err)
c.renderShowSelectPassword(ctx, w, email, code, false)
return
}
if err := c.authProvider.ChangePassword(ctx, form.Password, code); err != nil {
flash.Error("Failed to change password: %v", err)
c.renderShowSelectPassword(ctx, w, email, code, true)
return
}
if err := c.db.PasswordChanged(email, time.Now().UTC()); err != nil {
logger.Errorw("failed to mark password change time", "error", err)
}
flash.Alert("Successfully selected new password.")
c.renderLogin(ctx, w)
})
}
func (c *Controller) validateComplexity(password string) error {
reqs := c.config.PasswordRequirements
if len(password) < reqs.Length {
return fmt.Errorf("password must be at least %d characters long", reqs.Length)
}
upperCount := 0
lowerCount := 0
digitCount := 0
specialCount := 0
for _, c := range password {
if unicode.IsLetter(c) {
if unicode.IsUpper(c) {
upperCount++
} else {
lowerCount++
}
} else if unicode.IsDigit(c) {
digitCount++
} else {
specialCount++
}
}
if upperCount < reqs.Uppercase {
return fmt.Errorf("password must contain at least %d uppercase characters", reqs.Uppercase)
}
if lowerCount < reqs.Lowercase {
return fmt.Errorf("password must contain at least %d lowercase characters", reqs.Lowercase)
}
if digitCount < reqs.Number {
return fmt.Errorf("password must contain at least %d digits", reqs.Number)
}
if specialCount < reqs.Special {
return fmt.Errorf("password must contain at least %d special characters", reqs.Number)
}
return nil
}