148 lines
3.4 KiB
Go
148 lines
3.4 KiB
Go
package app
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
|
|
acl "acl.orly"
|
|
"encoders.orly/envelopes/authenvelope"
|
|
"encoders.orly/envelopes/eventenvelope"
|
|
"encoders.orly/envelopes/okenvelope"
|
|
"encoders.orly/kind"
|
|
"encoders.orly/reason"
|
|
"lol.mleku.dev/chk"
|
|
"lol.mleku.dev/log"
|
|
utils "utils.orly"
|
|
)
|
|
|
|
func (l *Listener) HandleEvent(msg []byte) (err error) {
|
|
// decode the envelope
|
|
env := eventenvelope.NewSubmission()
|
|
if msg, err = env.Unmarshal(msg); chk.E(err) {
|
|
return
|
|
}
|
|
defer func() {
|
|
if env != nil && env.E != nil {
|
|
env.E.Free()
|
|
}
|
|
}()
|
|
if len(msg) > 0 {
|
|
log.I.F("extra '%s'", msg)
|
|
}
|
|
// check the event ID is correct
|
|
calculatedId := env.E.GetIDBytes()
|
|
if !utils.FastEqual(calculatedId, env.E.ID) {
|
|
if err = Ok.Invalid(
|
|
l, env, "event id is computed incorrectly, "+
|
|
"event has ID %0x, but when computed it is %0x",
|
|
env.E.ID, calculatedId,
|
|
); chk.E(err) {
|
|
return
|
|
}
|
|
return
|
|
}
|
|
// verify the signature
|
|
var ok bool
|
|
if ok, err = env.Verify(); chk.T(err) {
|
|
if err = Ok.Error(
|
|
l, env, fmt.Sprintf(
|
|
"failed to verify signature: %s",
|
|
err.Error(),
|
|
),
|
|
); chk.E(err) {
|
|
return
|
|
}
|
|
} else if !ok {
|
|
if err = Ok.Invalid(
|
|
l, env,
|
|
"signature is invalid",
|
|
); chk.E(err) {
|
|
return
|
|
}
|
|
return
|
|
}
|
|
// check permissions of user
|
|
accessLevel := acl.Registry.GetAccessLevel(l.authedPubkey.Load(), l.remote)
|
|
switch accessLevel {
|
|
case "none":
|
|
log.D.F(
|
|
"handle event: sending 'OK,false,auth-required...' to %s", l.remote,
|
|
)
|
|
if err = okenvelope.NewFrom(
|
|
env.Id(), false,
|
|
reason.AuthRequired.F("auth required for write access"),
|
|
).Write(l); chk.E(err) {
|
|
// return
|
|
}
|
|
log.D.F("handle event: sending challenge to %s", l.remote)
|
|
if err = authenvelope.NewChallengeWith(l.challenge.Load()).
|
|
Write(l); chk.E(err) {
|
|
return
|
|
}
|
|
return
|
|
case "read":
|
|
log.D.F(
|
|
"handle event: sending 'OK,false,auth-required:...' to %s",
|
|
l.remote,
|
|
)
|
|
if err = okenvelope.NewFrom(
|
|
env.Id(), false,
|
|
reason.AuthRequired.F("auth required for write access"),
|
|
).Write(l); chk.E(err) {
|
|
return
|
|
}
|
|
log.D.F("handle event: sending challenge to %s", l.remote)
|
|
if err = authenvelope.NewChallengeWith(l.challenge.Load()).
|
|
Write(l); chk.E(err) {
|
|
return
|
|
}
|
|
return
|
|
default:
|
|
// user has write access or better, continue
|
|
log.D.F("user has %s access", accessLevel)
|
|
}
|
|
// if the event is a delete, process the delete
|
|
if env.E.Kind == kind.EventDeletion.K {
|
|
l.HandleDelete(env)
|
|
} else {
|
|
// check if the event was deleted
|
|
if err = l.CheckForDeleted(env.E, l.Admins); err != nil {
|
|
if strings.HasPrefix(err.Error(), "blocked:") {
|
|
errStr := err.Error()[len("blocked: "):len(err.Error())]
|
|
if err = Ok.Error(
|
|
l, env, errStr,
|
|
); chk.E(err) {
|
|
return
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// store the event
|
|
log.I.F("saving event %0x, %s", env.E.ID, env.E.Serialize())
|
|
if _, _, err = l.SaveEvent(l.Ctx, env.E); chk.E(err) {
|
|
return
|
|
}
|
|
// Send a success response storing
|
|
if err = Ok.Ok(l, env, ""); chk.E(err) {
|
|
return
|
|
}
|
|
defer l.publishers.Deliver(env.E)
|
|
log.D.F("saved event %0x", env.E.ID)
|
|
var isNewFromAdmin bool
|
|
for _, admin := range l.Admins {
|
|
if utils.FastEqual(admin, env.E.Pubkey) {
|
|
isNewFromAdmin = true
|
|
break
|
|
}
|
|
}
|
|
if isNewFromAdmin {
|
|
// if a follow list was saved, reconfigure ACLs now that it is persisted
|
|
if env.E.Kind == kind.FollowList.K ||
|
|
env.E.Kind == kind.RelayListMetadata.K {
|
|
if err = acl.Registry.Configure(); chk.E(err) {
|
|
}
|
|
}
|
|
}
|
|
return
|
|
}
|