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mirror of https://github.com/go-gitea/gitea synced 2024-11-05 09:44:26 +00:00
gitea/modules/auth/password/pwn/pwn.go
KN4CK3R f8b471ace1
Unify user update methods (#28733)
Fixes #28660
Fixes an admin api bug related to `user.LoginSource`
Fixed `/user/emails` response not identical to GitHub api

This PR unifies the user update methods. The goal is to keep the logic
only at one place (having audit logs in mind). For example, do the
password checks only in one method not everywhere a password is updated.

After that PR is merged, the user creation should be next.
2024-02-04 13:29:09 +00:00

119 lines
2.7 KiB
Go

// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package pwn
import (
"context"
"crypto/sha1"
"encoding/hex"
"errors"
"fmt"
"io"
"net/http"
"strconv"
"strings"
"code.gitea.io/gitea/modules/setting"
)
const passwordURL = "https://api.pwnedpasswords.com/range/"
// ErrEmptyPassword is an empty password error
var ErrEmptyPassword = errors.New("password cannot be empty")
// Client is a HaveIBeenPwned client
type Client struct {
ctx context.Context
http *http.Client
}
// New returns a new HaveIBeenPwned Client
func New(options ...ClientOption) *Client {
client := &Client{
ctx: context.Background(),
http: http.DefaultClient,
}
for _, opt := range options {
opt(client)
}
return client
}
// ClientOption is a way to modify a new Client
type ClientOption func(*Client)
// WithHTTP will set the http.Client of a Client
func WithHTTP(httpClient *http.Client) func(pwnClient *Client) {
return func(pwnClient *Client) {
pwnClient.http = httpClient
}
}
// WithContext will set the context.Context of a Client
func WithContext(ctx context.Context) func(pwnClient *Client) {
return func(pwnClient *Client) {
pwnClient.ctx = ctx
}
}
func newRequest(ctx context.Context, method, url string, body io.ReadCloser) (*http.Request, error) {
req, err := http.NewRequestWithContext(ctx, method, url, body)
if err != nil {
return nil, err
}
req.Header.Add("User-Agent", "Gitea "+setting.AppVer)
return req, nil
}
// CheckPassword returns the number of times a password has been compromised
// Adding padding will make requests more secure, however is also slower
// because artificial responses will be added to the response
// For more information, see https://www.troyhunt.com/enhancing-pwned-passwords-privacy-with-padding/
func (c *Client) CheckPassword(pw string, padding bool) (int, error) {
if pw == "" {
return -1, ErrEmptyPassword
}
sha := sha1.New()
sha.Write([]byte(pw))
enc := hex.EncodeToString(sha.Sum(nil))
prefix, suffix := enc[:5], enc[5:]
req, err := newRequest(c.ctx, http.MethodGet, fmt.Sprintf("%s%s", passwordURL, prefix), nil)
if err != nil {
return -1, nil
}
if padding {
req.Header.Add("Add-Padding", "true")
}
resp, err := c.http.Do(req)
if err != nil {
return -1, err
}
body, err := io.ReadAll(resp.Body)
if err != nil {
return -1, err
}
defer resp.Body.Close()
for _, pair := range strings.Split(string(body), "\n") {
parts := strings.Split(pair, ":")
if len(parts) != 2 {
continue
}
if strings.EqualFold(suffix, parts[0]) {
count, err := strconv.ParseInt(strings.TrimSpace(parts[1]), 10, 64)
if err != nil {
return -1, err
}
return int(count), nil
}
}
return 0, nil
}