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owl-blogs/user.go

535 lines
12 KiB

package owl
import (
"crypto/sha256"
"encoding/base64"
"fmt"
"net/url"
"os"
"path"
"sort"
"time"
"golang.org/x/crypto/bcrypt"
"gopkg.in/yaml.v2"
)
type User struct {
repo *Repository
name string
}
type UserConfig struct {
Title string `yaml:"title"`
SubTitle string `yaml:"subtitle"`
HeaderColor string `yaml:"header_color"`
AuthorName string `yaml:"author_name"`
Me []UserMe `yaml:"me"`
PassworHash string `yaml:"password_hash"`
Lists []PostList `yaml:"lists"`
PrimaryListInclude []string `yaml:"primary_list_include"`
}
type PostList struct {
Id string `yaml:"id"`
Title string `yaml:"title"`
Include []string `yaml:"include"`
}
func (l *PostList) ContainsType(t string) bool {
for _, t2 := range l.Include {
if t2 == t {
return true
}
}
return false
}
type UserMe struct {
Name string `yaml:"name"`
Url string `yaml:"url"`
}
type AuthCode struct {
Code string `yaml:"code"`
ClientId string `yaml:"client_id"`
RedirectUri string `yaml:"redirect_uri"`
CodeChallenge string `yaml:"code_challenge"`
CodeChallengeMethod string `yaml:"code_challenge_method"`
Scope string `yaml:"scope"`
Created time.Time `yaml:"created"`
}
type AccessToken struct {
Token string `yaml:"token"`
Scope string `yaml:"scope"`
ClientId string `yaml:"client_id"`
RedirectUri string `yaml:"redirect_uri"`
Created time.Time `yaml:"created"`
ExpiresIn int `yaml:"expires_in"`
}
type Session struct {
Id string `yaml:"id"`
Created time.Time `yaml:"created"`
ExpiresIn int `yaml:"expires_in"`
}
func (user User) Dir() string {
return path.Join(user.repo.UsersDir(), user.name)
}
func (user User) UrlPath() string {
return user.repo.UserUrlPath(user)
}
func (user User) ListUrl(list PostList) string {
url, _ := url.JoinPath(user.UrlPath(), "lists/"+list.Id+"/")
return url
}
func (user User) FullUrl() string {
url, _ := url.JoinPath(user.repo.FullUrl(), user.UrlPath())
return url
}
func (user User) AuthUrl() string {
if user.Config().PassworHash == "" {
return ""
}
url, _ := url.JoinPath(user.FullUrl(), "auth/")
return url
}
func (user User) TokenUrl() string {
url, _ := url.JoinPath(user.AuthUrl(), "token/")
return url
}
func (user User) IndieauthMetadataUrl() string {
url, _ := url.JoinPath(user.FullUrl(), ".well-known/oauth-authorization-server")
return url
}
func (user User) WebmentionUrl() string {
url, _ := url.JoinPath(user.FullUrl(), "webmention/")
return url
}
func (user User) MicropubUrl() string {
url, _ := url.JoinPath(user.FullUrl(), "micropub/")
return url
}
func (user User) MediaUrl() string {
url, _ := url.JoinPath(user.UrlPath(), "media")
return url
}
func (user User) EditorUrl() string {
url, _ := url.JoinPath(user.UrlPath(), "editor/")
return url
}
func (user User) EditorLoginUrl() string {
url, _ := url.JoinPath(user.UrlPath(), "editor/auth/")
return url
}
func (user User) PostDir() string {
return path.Join(user.Dir(), "public")
}
func (user User) MetaDir() string {
return path.Join(user.Dir(), "meta")
}
func (user User) MediaDir() string {
return path.Join(user.Dir(), "media")
}
func (user User) ConfigFile() string {
return path.Join(user.MetaDir(), "config.yml")
}
func (user User) AuthCodesFile() string {
return path.Join(user.MetaDir(), "auth_codes.yml")
}
func (user User) AccessTokensFile() string {
return path.Join(user.MetaDir(), "access_tokens.yml")
}
func (user User) SessionsFile() string {
return path.Join(user.MetaDir(), "sessions.yml")
}
func (user User) Name() string {
return user.name
}
func (user User) AvatarUrl() string {
for _, ext := range []string{".jpg", ".jpeg", ".png", ".gif"} {
if fileExists(path.Join(user.MediaDir(), "avatar"+ext)) {
url, _ := url.JoinPath(user.MediaUrl(), "avatar"+ext)
return url
}
}
return ""
}
func (user User) FaviconUrl() string {
for _, ext := range []string{".jpg", ".jpeg", ".png", ".gif", ".ico"} {
if fileExists(path.Join(user.MediaDir(), "favicon"+ext)) {
url, _ := url.JoinPath(user.MediaUrl(), "favicon"+ext)
return url
}
}
return ""
}
func (user User) AllPosts() ([]*Post, error) {
postFiles := listDir(path.Join(user.Dir(), "public"))
posts := make([]*Post, 0)
for _, id := range postFiles {
// if is a directory and has index.md, add to posts
if dirExists(path.Join(user.Dir(), "public", id)) {
if fileExists(path.Join(user.Dir(), "public", id, "index.md")) {
post, _ := user.GetPost(id)
posts = append(posts, post)
}
}
}
type PostWithDate struct {
post *Post
date time.Time
}
postDates := make([]PostWithDate, len(posts))
for i, post := range posts {
meta := post.Meta()
postDates[i] = PostWithDate{post: post, date: meta.Date}
}
// sort posts by date
sort.Slice(postDates, func(i, j int) bool {
return postDates[i].date.After(postDates[j].date)
})
for i, post := range postDates {
posts[i] = post.post
}
return posts, nil
}
func (user User) PublishedPosts() ([]*Post, error) {
posts, _ := user.AllPosts()
// remove drafts
n := 0
for _, post := range posts {
meta := post.Meta()
if !meta.Draft {
posts[n] = post
n++
}
}
posts = posts[:n]
return posts, nil
}
func (user User) PrimaryFeedPosts() ([]*Post, error) {
config := user.Config()
include := config.PrimaryListInclude
if len(include) == 0 {
include = []string{"article", "reply"} // default before addition of this option
}
return user.GetPostsOfList(PostList{
Id: "",
Title: "",
Include: include,
})
}
func (user User) GetPostsOfList(list PostList) ([]*Post, error) {
posts, _ := user.PublishedPosts()
// remove posts not included
n := 0
for _, post := range posts {
meta := post.Meta()
if list.ContainsType(meta.Type) {
posts[n] = post
n++
}
}
posts = posts[:n]
return posts, nil
}
func (user User) GetPost(id string) (*Post, error) {
// check if posts index.md exists
if !fileExists(path.Join(user.Dir(), "public", id, "index.md")) {
return &Post{}, fmt.Errorf("post %s does not exist", id)
}
post := Post{user: &user, id: id}
// post.loadMeta()
meta := post.Meta()
title := meta.Title
post.title = fmt.Sprint(title)
return &post, nil
}
func (user User) CreateNewPostFull(meta PostMeta, content string) (*Post, error) {
slugHint := meta.Title
if slugHint == "" {
slugHint = "note"
}
folder_name := toDirectoryName(slugHint)
post_dir := path.Join(user.Dir(), "public", folder_name)
// if post already exists, add -n to the end of the name
i := 0
for {
if dirExists(post_dir) {
i++
folder_name = toDirectoryName(fmt.Sprintf("%s-%d", slugHint, i))
post_dir = path.Join(user.Dir(), "public", folder_name)
} else {
break
}
}
post := Post{user: &user, id: folder_name, title: slugHint}
initial_content := ""
initial_content += "---\n"
// write meta
meta_bytes, err := yaml.Marshal(meta)
if err != nil {
return &Post{}, err
}
initial_content += string(meta_bytes)
initial_content += "---\n"
initial_content += "\n"
initial_content += content
// create post file
os.Mkdir(post_dir, 0755)
os.WriteFile(post.ContentFile(), []byte(initial_content), 0644)
// create media dir
os.Mkdir(post.MediaDir(), 0755)
return &post, nil
}
func (user User) CreateNewPost(title string, draft bool) (*Post, error) {
meta := PostMeta{
Title: title,
Date: time.Now(),
Aliases: []string{},
Draft: draft,
}
return user.CreateNewPostFull(meta, title)
}
func (user User) Template() (string, error) {
// load base.html
path := path.Join(user.Dir(), "meta", "base.html")
base_html, err := os.ReadFile(path)
if err != nil {
return "", err
}
return string(base_html), nil
}
func (user User) Config() UserConfig {
meta := UserConfig{}
loadFromYaml(user.ConfigFile(), &meta)
return meta
}
func (user User) SetConfig(new_config UserConfig) error {
return saveToYaml(user.ConfigFile(), new_config)
}
func (user User) PostAliases() (map[string]*Post, error) {
post_aliases := make(map[string]*Post)
posts, err := user.PublishedPosts()
if err != nil {
return post_aliases, err
}
for _, post := range posts {
if err != nil {
return post_aliases, err
}
for _, alias := range post.Aliases() {
post_aliases[alias] = post
}
}
return post_aliases, nil
}
func (user User) GetPostList(id string) (*PostList, error) {
lists := user.Config().Lists
for _, list := range lists {
if list.Id == id {
return &list, nil
}
}
return &PostList{}, fmt.Errorf("list %s does not exist", id)
}
func (user User) AddPostList(list PostList) error {
config := user.Config()
config.Lists = append(config.Lists, list)
return user.SetConfig(config)
}
func (user User) ResetPassword(password string) error {
bytes, err := bcrypt.GenerateFromPassword([]byte(password), 10)
if err != nil {
return err
}
config := user.Config()
config.PassworHash = string(bytes)
return user.SetConfig(config)
}
func (user User) VerifyPassword(password string) bool {
err := bcrypt.CompareHashAndPassword(
[]byte(user.Config().PassworHash), []byte(password),
)
return err == nil
}
func (user User) getAuthCodes() []AuthCode {
codes := make([]AuthCode, 0)
loadFromYaml(user.AuthCodesFile(), &codes)
return codes
}
func (user User) addAuthCode(code AuthCode) error {
codes := user.getAuthCodes()
codes = append(codes, code)
return saveToYaml(user.AuthCodesFile(), codes)
}
func (user User) GenerateAuthCode(
client_id string, redirect_uri string,
code_challenge string, code_challenge_method string,
scope string,
) (string, error) {
// generate code
code := GenerateRandomString(32)
return code, user.addAuthCode(AuthCode{
Code: code,
ClientId: client_id,
RedirectUri: redirect_uri,
CodeChallenge: code_challenge,
CodeChallengeMethod: code_challenge_method,
Scope: scope,
Created: time.Now(),
})
}
func (user User) VerifyAuthCode(
code string, client_id string, redirect_uri string, code_verifier string,
) (bool, AuthCode) {
codes := user.getAuthCodes()
for _, c := range codes {
if c.Code == code && c.ClientId == client_id && c.RedirectUri == redirect_uri {
if c.CodeChallengeMethod == "plain" {
return c.CodeChallenge == code_verifier, c
} else if c.CodeChallengeMethod == "S256" {
// hash code_verifier
hash := sha256.Sum256([]byte(code_verifier))
return c.CodeChallenge == base64.RawURLEncoding.EncodeToString(hash[:]), c
} else if c.CodeChallengeMethod == "" {
// Check age of code
// A maximum lifetime of 10 minutes is recommended ( https://indieauth.spec.indieweb.org/#authorization-response)
if time.Since(c.Created) < 10*time.Minute {
return true, c
}
}
}
}
return false, AuthCode{}
}
func (user User) getAccessTokens() []AccessToken {
codes := make([]AccessToken, 0)
loadFromYaml(user.AccessTokensFile(), &codes)
return codes
}
func (user User) addAccessToken(code AccessToken) error {
codes := user.getAccessTokens()
codes = append(codes, code)
return saveToYaml(user.AccessTokensFile(), codes)
}
func (user User) GenerateAccessToken(authCode AuthCode) (string, int, error) {
// generate code
token := GenerateRandomString(32)
duration := 24 * 60 * 60
return token, duration, user.addAccessToken(AccessToken{
Token: token,
ClientId: authCode.ClientId,
RedirectUri: authCode.RedirectUri,
Scope: authCode.Scope,
ExpiresIn: duration,
Created: time.Now(),
})
}
func (user User) ValidateAccessToken(token string) (bool, AccessToken) {
tokens := user.getAccessTokens()
for _, t := range tokens {
if t.Token == token {
if time.Since(t.Created) < time.Duration(t.ExpiresIn)*time.Second {
return true, t
}
}
}
return false, AccessToken{}
}
func (user User) getSessions() []Session {
sessions := make([]Session, 0)
loadFromYaml(user.SessionsFile(), &sessions)
return sessions
}
func (user User) addSession(session Session) error {
sessions := user.getSessions()
sessions = append(sessions, session)
return saveToYaml(user.SessionsFile(), sessions)
}
func (user User) CreateNewSession() string {
// generate code
code := GenerateRandomString(32)
user.addSession(Session{
Id: code,
Created: time.Now(),
ExpiresIn: 30 * 24 * 60 * 60,
})
return code
}
func (user User) ValidateSession(session_id string) bool {
sessions := user.getSessions()
for _, session := range sessions {
if session.Id == session_id {
if time.Since(session.Created) < time.Duration(session.ExpiresIn)*time.Second {
return true
}
}
}
return false
}