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fix(sub): look up a socket child's fallback front on the child's own host

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projectThroughFallbackMaster found the front of a unix-socket child by
scanning every inbound's settings.fallbacks for that socket. A node's
inbound settings are mirrored from the node, so a node could name any
socket and have its own port, security and external proxies substituted
into the subscription links of another host's child.

A socket exists only on the host that binds it, so the lookup, and the
same scan the inbounds page uses for share links, now considers only
inbounds hosted where the child runs.
This commit is contained in:
MHSanaei
2026-11-01 00:21:03 +01:00
parent bc2c64d901
commit c0bd572085
3 changed files with 62 additions and 2 deletions
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internal/sub/service.go
+10 -2
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@@ -827,7 +827,7 @@ func (s *SubService) indexStatsBySubId(subId string) {
// when applicable. Covers both fallback mechanisms:
// - panel-tracked: an inbound_fallbacks row where child_id = inbound.Id
// - legacy unix-socket: inbound.Listen begins with "@" and some VLESS/
// Trojan inbound's settings.fallbacks references that listen address
// Trojan inbound on the same host names that socket in settings.fallbacks
//
// Returns true when a projection happened; sub services call this before
// generating links so a child VLESS-WS bound to 127.0.0.1 emits the
@@ -861,7 +861,15 @@ func (s *SubService) projectThroughFallbackMaster(inbound *model.Inbound) bool {
if master == nil && len(inbound.Listen) > 0 && inbound.Listen[0] == '@' {
var m model.Inbound
if err := db.Model(model.Inbound{}).
// A unix socket exists only on the host that binds it, so only an inbound
// hosted where the child runs (this panel, or the same node) can front it.
q := db.Model(model.Inbound{})
if inbound.NodeID != nil {
q = q.Where("node_id = ?", *inbound.NodeID)
} else {
q = q.Where("node_id IS NULL")
}
if err := q.
Where("JSON_TYPE(settings, '$.fallbacks') = 'array'").
Where("EXISTS (SELECT * FROM json_each(settings, '$.fallbacks') WHERE json_extract(value, '$.dest') = ?)", inbound.Listen).
First(&m).Error; err == nil {