1package main
  2
  3import (
  4	"crypto/rand"
  5	"fmt"
  6	"net/http"
  7	"time"
  8
  9	"humungus.tedunangst.com/r/webs/junk"
 10	"humungus.tedunangst.com/r/webs/login"
 11)
 12
 13type NotResponseWriter struct {
 14	body   []byte
 15	header http.Header
 16}
 17
 18func (w NotResponseWriter) Header() http.Header {
 19	return w.header
 20}
 21
 22func (w NotResponseWriter) Write(b []byte) (int, error) {
 23	w.body = b
 24	return 0, nil
 25}
 26
 27func (w NotResponseWriter) WriteHeader(statusCode int) {}
 28
 29func snowflake() uint64 {
 30	ts := time.Now()
 31	return uint64(uint64(ts.UnixNano()/int64(time.Millisecond))<<16 | uint64(time.Now().Nanosecond()&0xffff))
 32}
 33
 34func badjunk(rw http.ResponseWriter, j junk.Junk, path string) {
 35	elog.Printf("%s: bad junk: %s", path, j.ToString())
 36	http.Error(rw, fmt.Sprintf("%s: bad junk", path), http.StatusBadRequest)
 37}
 38
 39func goodjunk(rw http.ResponseWriter, j junk.Junk) {
 40	rw.WriteHeader(http.StatusOK)
 41	rw.Header().Set("Content-Type", "application/json; charset=utf-8")
 42	rw.Write(j.ToBytes())
 43}
 44
 45func showoauthlogin(rw http.ResponseWriter, r *http.Request) {
 46	templinfo := make(map[string]interface{})
 47	templinfo = getInfo(r)
 48	if err := readviews.Execute(rw, "oauthlogin.html", templinfo); err != nil {
 49		elog.Println(err)
 50	}
 51}
 52
 53// https://docs.joinmastodon.org/methods/apps/#create
 54func apiapps(rw http.ResponseWriter, r *http.Request) {
 55	if err := r.ParseForm(); err != nil {
 56		http.Error(rw, "invalid input", http.StatusUnprocessableEntity)
 57		elog.Println(err)
 58		return
 59	}
 60	clientName := r.Form.Get("client_name")
 61	redirectUri := r.Form.Get("redirect_uris")
 62	scopes := r.Form.Get("scopes")
 63	website := r.Form.Get("website")
 64	clientID := tokengen()
 65	clientSecret := tokengen()
 66	vapidKey := tokengen()
 67
 68	_, err := stmtSaveMastoApp.Exec(clientName, redirectUri, scopes, clientID, clientSecret, vapidKey)
 69	if err != nil {
 70		elog.Printf("error saving masto app: %v", err)
 71		http.Error(rw, "error saving masto app", http.StatusUnprocessableEntity)
 72		return
 73	}
 74
 75	j := junk.New()
 76	j["id"] = fmt.Sprintf("%d", snowflake())
 77	j["website"] = website
 78	j["name"] = clientName
 79	j["redirect_uri"] = redirectUri
 80	j["client_id"] = clientID
 81	j["client_secret"] = clientSecret
 82	j["vapid_key"] = vapidKey
 83
 84	fmt.Println(j.ToString())
 85	goodjunk(rw, j)
 86}
 87
 88func tokengen() string {
 89	b := make([]byte, 32)
 90	rand.Read(b)
 91	return fmt.Sprintf("%x", b)
 92}
 93
 94// https://docs.joinmastodon.org/methods/oauth/#authorize
 95func oauthorize(rw http.ResponseWriter, r *http.Request) {
 96	var nrw NotResponseWriter
 97	login.LoginFunc(nrw, r)
 98	dlog.Println("got code!", string(nrw.body))
 99	rw.WriteHeader(http.StatusOK)
100	return
101}
102
103// https://docs.joinmastodon.org/methods/instance/#v2
104func instance(rw http.ResponseWriter, r *http.Request) {
105	j := junk.New()
106
107	var servername string
108	if err := getconfig("servername", &servername); err != nil {
109		http.Error(rw, "getting servername", http.StatusInternalServerError)
110		return
111	}
112
113	j["uri"] = servername
114	j["title"] = "honk"
115	j["description"] = "federated honk conveyance"
116	j["version"] = "develop"
117
118	thumbnail := junk.New()
119	thumbnail["url"] = fmt.Sprintf("https://%s/icon.png", servername)
120	j["thumbnail"] = thumbnail
121	j["languages"] = []string{"en"}
122
123	config := junk.New()
124
125	a := junk.New()
126	a["max_featured_tags"] = 10
127	config["accounts"] = a
128
129	s := junk.New()
130	s["max_characters"] = 5000
131	s["max_media_attachments"] = 1
132	s["characters_reserved_per_url"] = 23
133	config["statuses"] = s
134
135	m := junk.New()
136	m["supported_mime_types"] = []string{
137		"image/jpeg",
138		"image/png",
139		"image/gif",
140		"image/heic",
141		"image/heif",
142		"image/webp",
143		"image/avif",
144		"video/webm",
145		"video/mp4",
146		"video/quicktime",
147		"video/ogg",
148		"audio/wave",
149		"audio/wav",
150		"audio/x-wav",
151		"audio/x-pn-wave",
152		"audio/vnd.wave",
153		"audio/ogg",
154		"audio/vorbis",
155		"audio/mpeg",
156		"audio/mp3",
157		"audio/webm",
158		"audio/flac",
159		"audio/aac",
160		"audio/m4a",
161		"audio/x-m4a",
162		"audio/mp4",
163		"audio/3gpp",
164		"video/x-ms-asf",
165	}
166
167	m["image_size_limit"] = 10485760
168	m["image_matrix_limit"] = 16777216
169	m["video_size_limit"] = 41943040
170	m["video_frame_rate_limit"] = 60
171	m["video_matrix_limit"] = 2304000
172	j["media_attachments"] = m
173
174	rw.WriteHeader(http.StatusOK)
175	rw.Write(j.ToBytes())
176
177	return
178}