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config: reject case-insensitive subdomain domains (#5474)

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This commit is contained in:
fatedier
2026-08-09 22:52:30 +08:00
committed by GitHub
parent 223b44336c
commit a6a782bed4
2 changed files with 80 additions and 2 deletions
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pkg/config/v1/validation/proxy.go
+4 -2
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@@ -79,9 +79,11 @@ func validateDomainConfigForClient(c *v1.DomainConfig) error {
}
func validateDomainConfigForServer(c *v1.DomainConfig, s *v1.ServerConfig) error {
subDomainHost := strings.ToLower(s.SubDomainHost)
for _, domain := range c.CustomDomains {
if s.SubDomainHost != "" && len(strings.Split(s.SubDomainHost, ".")) < len(strings.Split(domain, ".")) {
if strings.HasSuffix(domain, "."+s.SubDomainHost) {
canonicalDomain := strings.ToLower(domain)
if subDomainHost != "" && len(strings.Split(subDomainHost, ".")) < len(strings.Split(canonicalDomain, ".")) {
if strings.HasSuffix(canonicalDomain, "."+subDomainHost) {
return fmt.Errorf("custom domain [%s] should not belong to subdomain host [%s]", domain, s.SubDomainHost)
}
}