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package registry
import (
"bytes"
"crypto/x509"
"encoding/gob"
"encoding/pem"
"net/http"
"net/url"
"strings"
"git.capotej.com/capotej/communique/config"
"git.capotej.com/capotej/communique/models"
"git.capotej.com/capotej/communique/urls"
"git.capotej.com/capotej/communique/views"
)
type Handler struct {
handlerCfg config.Handler
}
// TODO rename to controller and controller.go
type Registry struct {
cfg config.Config
persister *models.Persister
handlerMap map[string]Handler
}
func NewRegistry(cfg config.Config, persister *models.Persister) (*Registry, error) {
reg := Registry{cfg: cfg, persister: persister}
reg.handlerMap = make(map[string]Handler)
for _, v := range cfg.Handlers {
reg.handlerMap[v.Name] = Handler{handlerCfg: v}
err := generateKeypairIfNeeded(v, persister)
if err != nil {
return nil, err
}
}
return ®, nil
}
func generateKeypairIfNeeded(v config.Handler, p *models.Persister) error {
kp, err := models.CreateKeypair(v)
if err != nil {
return err
}
err = p.Store(kp)
if err != nil {
return err
}
return nil
}
func (r *Registry) Actor(name string) (map[string]interface{}, error) {
handler := r.findByName(name)
if handler == nil {
return nil, nil
}
aso := models.NewKeypair(handler.handlerCfg)
result, err := r.persister.Find(aso)
if err != nil {
return nil, err
}
buf := bytes.NewBuffer(result)
dec := gob.NewDecoder(buf)
var keypair models.Keypair
err = dec.Decode(&keypair)
if err != nil {
return nil, err
}
privKey := &keypair.PrivateKey
pemdata := pem.EncodeToMemory(
&pem.Block{
Type: "PUBLIC KEY",
Bytes: x509.MarshalPKCS1PublicKey(&privKey.PublicKey),
},
)
return views.RenderActor(handler.handlerCfg.Name, r.cfg.Domain, string(pemdata))
}
func (r *Registry) OutboxCollection(name string) (map[string]interface{}, error) {
handler := r.findByName(name)
if handler == nil {
return nil, nil
}
aso := models.NewOutboxItem(handler.handlerCfg)
page, err := r.persister.Collect(aso)
if err != nil {
return nil, err
}
var outboxItems []models.OutboxItem
for _, v := range page { //TODO pagination
buf := bytes.NewBuffer(v)
dec := gob.NewDecoder(buf)
var outboxItem models.OutboxItem
err = dec.Decode(&outboxItem)
if err != nil {
return nil, err
}
outboxItems = append(outboxItems, outboxItem)
}
return views.RenderOutboxCollection(handler.handlerCfg.Name, r.cfg.Domain, outboxItems)
}
func (r *Registry) Following(name string) (map[string]interface{}, error) {
handler := r.findByName(name)
if handler == nil {
return nil, nil
}
profile, err := urls.UrlProfile(name, r.cfg.Domain)
if err != nil {
return nil, err
}
following, err := urls.UrlFollowing(name, r.cfg.Domain)
if err != nil {
return nil, err
}
result := make(map[string]interface{})
result["@context"] = "https://www.w3.org/ns/activitystreams"
result["attributedTo"] = profile.String()
result["id"] = following.String()
result["totalItems"] = 0
result["orderedItems"] = []bool{}
result["type"] = "OrderedCollection"
return result, nil
}
func (r *Registry) Followers(name string) (map[string]interface{}, error) {
handler := r.findByName(name)
if handler == nil {
return nil, nil
}
profile, err := urls.UrlProfile(name, r.cfg.Domain)
if err != nil {
return nil, err
}
followers, err := urls.UrlFollowers(name, r.cfg.Domain)
if err != nil {
return nil, err
}
result := make(map[string]interface{})
result["@context"] = "https://www.w3.org/ns/activitystreams"
result["attributedTo"] = profile.String()
result["id"] = followers.String()
result["totalItems"] = 0
result["orderedItems"] = []bool{}
result["type"] = "OrderedCollection"
return result, nil
}
func (r *Registry) Inbox(name string, req *http.Request) error {
handler := r.findByName(name)
if handler == nil {
return nil
}
// verifier, err := httpsig.NewVerifier(req)
// if err != nil {
// return err
// }
return nil
}
func (r *Registry) ActivityOrNote(activityOrNote, name, id string) (map[string]interface{}, error) {
handler := r.findByName(name)
if handler == nil {
return nil, nil
}
lookup := models.NewOutboxItem(handler.handlerCfg)
lookup.Id = []byte(id)
result, err := r.persister.Find(lookup)
if err != nil {
return nil, err
}
if result == nil {
return nil, nil
}
buf := bytes.NewBuffer(result)
dec := gob.NewDecoder(buf)
var outboxItem models.OutboxItem
err = dec.Decode(&outboxItem)
if err != nil {
return nil, err
}
if activityOrNote == "activity" {
return views.RenderActivity(handler.handlerCfg.Name, r.cfg.Domain, outboxItem)
}
return views.RenderNote(handler.handlerCfg.Name, r.cfg.Domain, outboxItem)
}
// This has to handle various lookup formats:
// ?resource=acct:actor@domain
// ?resource=actor@domain
// ?resource=actor
// ?resource=acct:actor
func (r *Registry) Webfinger(fqn string) (*views.WebfingerResource, error) {
// Strip away acct: prefix, if found
fqn = strings.TrimPrefix(fqn, "acct:")
// Strip away @domain suffix, if found
domainUrl, err := url.Parse(r.cfg.Domain)
if err != nil {
return nil, err
}
hostname := "@" + domainUrl.Hostname()
fqn = strings.TrimSuffix(fqn, hostname)
// We should just have $actor left
handler := r.findByName(fqn)
if handler == nil {
return nil, nil
}
return views.RenderWebfinger(handler.handlerCfg.Name, r.cfg.Domain, hostname)
}
func (r *Registry) findByName(name string) *Handler {
handler, ok := r.handlerMap[name]
if !ok {
return nil
}
return &handler
}
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