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[CSP] Allow not having a Port for RessourceURI if the Scheme has no

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This commit is contained in:
wolfbeast 2020-02-11 12:30:45 +01:00 • committed by Roy Tam
commit 2537698cd2
1 changed files with 15 additions and 1 deletions
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16
dom/security/nsCSPUtils.cpp
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@ -555,7 +555,21 @@ permitsPort(const nsAString& aEnforcementScheme,
int32_t resourcePort; int32_t resourcePort;
nsresult rv = aResourceURI->GetPort(&resourcePort); nsresult rv = aResourceURI->GetPort(&resourcePort);
NS_ENSURE_SUCCESS(rv, false); if (NS_FAILED(rv) && aEnforcementPort.IsEmpty()) {
// If we cannot get a Port (e.g. because of an Custom Protocol handler)
// we need to check if a default port is associated with the Scheme
if (aEnforcementScheme.IsEmpty()) {
return false;
}
int defaultPortforScheme =
NS_GetDefaultPort(NS_ConvertUTF16toUTF8(aEnforcementScheme).get());
// If there is no default port associated with the Scheme (
// defaultPortforScheme == -1) or it is an externally handled protocol (
// defaultPortforScheme == 0 ) and the csp does not enforce a port - we can
// allow not having a port
return (defaultPortforScheme == -1 || defaultPortforScheme == 0);
}
// Avoid unnecessary string creation/manipulation and don't block the // Avoid unnecessary string creation/manipulation and don't block the
// load if the resource to be loaded uses the default port for that // load if the resource to be loaded uses the default port for that