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[bugfix] Use account ID host as accDomain if 2nd webfinger lookup fails (#1630)

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tobi 2023-03-19 16:45:13 +01:00 committed by GitHub
parent 7db81cde44
commit 66bedc4747
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1 changed files with 23 additions and 6 deletions
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29
internal/federation/dereferencing/account.go
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@ -222,14 +222,31 @@ func (d *deref) enrichAccount(ctx context.Context, requestUser string, uri *url.
if account.Username == "" {
// No username was provided, so no webfinger was attempted earlier.
//
// Now we have a username we can attempt it, this ensures up-to-date accountdomain info.
accDomain, _, err := d.fingerRemoteAccount(ctx, transport, latestAcc.Username, uri.Host)
// Now we have a username we can attempt again, to ensure up-to-date
// accountDomain info. For this final attempt we should use the domain
// of the ID of the dereffed account, rather than the URI we were given.
//
// This avoids cases where we were given a URI like
// https://example.org/@someone@somewhere.else and we've been redirected
// from example.org to somewhere.else: we want to take somewhere.else
// as the accountDomain then, not the example.org we were redirected from.
switch {
case err != nil:
log.Errorf(ctx, "error webfingering[2] remote account %s@%s: %v", latestAcc.Username, uri.Host, err)
// Assume the host from the returned ActivityPub representation.
idProp := apubAcc.GetJSONLDId()
if idProp == nil || !idProp.IsIRI() {
return nil, errors.New("enrichAccount: no id property found on person, or id was not an iri")
}
accHost := idProp.GetIRI().Host
case err == nil:
accDomain, _, err := d.fingerRemoteAccount(ctx, transport, latestAcc.Username, accHost)
if err != nil {
// We still couldn't webfinger the account, so we're not certain
// what the accountDomain actually is. Still, we can make a solid
// guess that it's the Host of the ActivityPub URI of the account.
// If we're wrong, we can just try again in a couple days.
log.Errorf(ctx, "error webfingering[2] remote account %s@%s: %v", latestAcc.Username, accHost, err)
latestAcc.Domain = accHost
} else {
// Update account with latest info.
latestAcc.Domain = accDomain
}