/*
* Based on the security flags provided in the loadInfo of the channel,
* doContentSecurityCheck() performs the following content security checks
* before opening the channel:
*
* (1) Same Origin Policy Check (if applicable)
* (2) Allow Cross Origin but perform sanity checks whether a principal
* is allowed to access the following URL.
* (3) Perform CORS check (if applicable)
* (4) ContentPolicy checks (Content-Security-Policy, Mixed Content, ...)
*
* @param aChannel
* The channel to perform the security checks on.
* @param aInAndOutListener
* The streamListener that is passed to channel->AsyncOpen2() that is now potentially
* wrappend within nsCORSListenerProxy() and becomes the corsListener that now needs
* to be set as new streamListener on the channel.
*/
nsresult
nsContentSecurityManager::doContentSecurityCheck(nsIChannel* aChannel,
nsCOMPtr<nsIStreamListener>& aInAndOutListener)
{
NS_ENSURE_ARG(aChannel);
nsCOMPtr<nsILoadInfo> loadInfo = aChannel->GetLoadInfo();
if (!loadInfo) {
MOZ_ASSERT(false, "channel needs to have loadInfo to perform security checks");
return NS_ERROR_UNEXPECTED;
}
// if dealing with a redirected channel then we have already installed
// streamlistener and redirect proxies and so we are done.
if (loadInfo->GetInitialSecurityCheckDone()) {
return NS_OK;
}
// make sure that only one of the five security flags is set in the loadinfo
// e.g. do not require same origin and allow cross origin at the same time
nsresult rv = ValidateSecurityFlags(loadInfo);
NS_ENSURE_SUCCESS(rv, rv);
// since aChannel was openend using asyncOpen2() we have to make sure
// that redirects of that channel also get openend using asyncOpen2()
// please note that some implementations of ::AsyncOpen2 might already
// have set that flag to true (e.g. nsViewSourceChannel) in which case
// we just set the flag again.
rv = loadInfo->SetEnforceSecurity(true);
NS_ENSURE_SUCCESS(rv, rv);
if (loadInfo->GetSecurityMode() == nsILoadInfo::SEC_REQUIRE_CORS_DATA_INHERITS) {
rv = DoCORSChecks(aChannel, loadInfo, aInAndOutListener);
NS_ENSURE_SUCCESS(rv, rv);
}
rv = CheckChannel(aChannel);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIURI> finalChannelURI;
rv = NS_GetFinalChannelURI(aChannel, getter_AddRefs(finalChannelURI));
NS_ENSURE_SUCCESS(rv, rv);
// Perform all ContentPolicy checks (MixedContent, CSP, ...)
rv = DoContentSecurityChecks(finalChannelURI, loadInfo);
NS_ENSURE_SUCCESS(rv, rv);
// now lets set the initalSecurityFlag for subsequent calls
rv = loadInfo->SetInitialSecurityCheckDone(true);
NS_ENSURE_SUCCESS(rv, rv);
// all security checks passed - lets allow the load
return NS_OK;
}
/*
* Based on the security flags provided in the loadInfo of the channel,
* doContentSecurityCheck() performs the following content security checks
* before opening the channel:
*
* (1) Same Origin Policy Check (if applicable)
* (2) Allow Cross Origin but perform sanity checks whether a principal
* is allowed to access the following URL.
* (3) Perform CORS check (if applicable)
* (4) ContentPolicy checks (Content-Security-Policy, Mixed Content, ...)
*
* @param aChannel
* The channel to perform the security checks on.
* @param aInAndOutListener
* The streamListener that is passed to channel->AsyncOpen2() that is now potentially
* wrappend within nsCORSListenerProxy() and becomes the corsListener that now needs
* to be set as new streamListener on the channel.
*/
nsresult
nsContentSecurityManager::doContentSecurityCheck(nsIChannel* aChannel,
nsCOMPtr<nsIStreamListener>& aInAndOutListener)
{
NS_ENSURE_ARG(aChannel);
nsCOMPtr<nsILoadInfo> loadInfo = aChannel->GetLoadInfo();
if (!loadInfo) {
MOZ_ASSERT(false, "channel needs to have loadInfo to perform security checks");
return NS_ERROR_UNEXPECTED;
}
// make sure that only one of the five security flags is set in the loadinfo
// e.g. do not require same origin and allow cross origin at the same time
nsresult rv = ValidateSecurityFlags(loadInfo);
NS_ENSURE_SUCCESS(rv, rv);
// lets store the initialSecurityCheckDone flag which indicates whether the channel
// was initialy evaluated by the contentSecurityManager. Once the inital
// asyncOpen() of the channel went through the contentSecurityManager then
// redirects do not have perform all the security checks, e.g. no reason
// to setup CORS again.
bool initialSecurityCheckDone = loadInfo->GetInitialSecurityCheckDone();
// now lets set the initalSecurityFlag for subsequent calls
rv = loadInfo->SetInitialSecurityCheckDone(true);
NS_ENSURE_SUCCESS(rv, rv);
// since aChannel was openend using asyncOpen2() we have to make sure
// that redirects of that channel also get openend using asyncOpen2()
// please note that some implementations of ::AsyncOpen2 might already
// have set that flag to true (e.g. nsViewSourceChannel) in which case
// we just set the flag again.
rv = loadInfo->SetEnforceSecurity(true);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIURI> finalChannelURI;
rv = NS_GetFinalChannelURI(aChannel, getter_AddRefs(finalChannelURI));
NS_ENSURE_SUCCESS(rv, rv);
nsSecurityFlags securityMode = loadInfo->GetSecurityMode();
// if none of the REQUIRE_SAME_ORIGIN flags are set, then SOP does not apply
if ((securityMode == nsILoadInfo::SEC_REQUIRE_SAME_ORIGIN_DATA_INHERITS) ||
(securityMode == nsILoadInfo::SEC_REQUIRE_SAME_ORIGIN_DATA_IS_BLOCKED)) {
rv = DoSOPChecks(finalChannelURI, loadInfo);
NS_ENSURE_SUCCESS(rv, rv);
}
// if dealing with a redirected channel then we only enforce SOP
// and can return at this point.
if (initialSecurityCheckDone) {
return NS_OK;
}
if ((securityMode == nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_DATA_INHERITS) ||
(securityMode == nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL)) {
// Please note that DoCheckLoadURIChecks should only be enforced for
// cross origin requests. If the flag SEC_REQUIRE_CORS_DATA_INHERITS is set
// within the loadInfo, then then CheckLoadURIWithPrincipal is performed
// within nsCorsListenerProxy
rv = DoCheckLoadURIChecks(finalChannelURI, loadInfo);
NS_ENSURE_SUCCESS(rv, rv);
}
if (securityMode == nsILoadInfo::SEC_REQUIRE_CORS_DATA_INHERITS) {
rv = DoCORSChecks(aChannel, loadInfo, aInAndOutListener);
NS_ENSURE_SUCCESS(rv, rv);
}
// Perform all ContentPolicy checks (MixedContent, CSP, ...)
rv = DoContentSecurityChecks(finalChannelURI, loadInfo);
NS_ENSURE_SUCCESS(rv, rv);
// all security checks passed - lets allow the load
return NS_OK;
}
/*
* Based on the security flags provided in the loadInfo of the channel,
* doContentSecurityCheck() performs the following content security checks
* before opening the channel:
*
* (1) Same Origin Policy Check (if applicable)
* (2) Allow Cross Origin but perform sanity checks whether a principal
* is allowed to access the following URL.
* (3) Perform CORS check (if applicable)
* (4) ContentPolicy checks (Content-Security-Policy, Mixed Content, ...)
*
* @param aChannel
* The channel to perform the security checks on.
* @param aInAndOutListener
* The streamListener that is passed to channel->AsyncOpen2() that is now potentially
* wrappend within nsCORSListenerProxy() and becomes the corsListener that now needs
* to be set as new streamListener on the channel.
*/
nsresult
nsContentSecurityManager::doContentSecurityCheck(nsIChannel* aChannel,
nsCOMPtr<nsIStreamListener>& aInAndOutListener)
{
NS_ENSURE_ARG(aChannel);
nsCOMPtr<nsILoadInfo> loadInfo = aChannel->GetLoadInfo();
if (!loadInfo) {
MOZ_ASSERT(false, "channel needs to have loadInfo to perform security checks");
return NS_ERROR_UNEXPECTED;
}
// make sure that only one of the five security flags is set in the loadinfo
// e.g. do not require same origin and allow cross origin at the same time
nsresult rv = ValidateSecurityFlags(loadInfo);
NS_ENSURE_SUCCESS(rv, rv);
// lets store the initialSecurityCheckDone flag which indicates whether the channel
// was initialy evaluated by the contentSecurityManager. Once the inital
// asyncOpen() of the channel went through the contentSecurityManager then
// redirects do not have perform all the security checks, e.g. no reason
// to setup CORS again.
bool initialSecurityCheckDone = loadInfo->GetInitialSecurityCheckDone();
// now lets set the initalSecurityFlag for subsequent calls
rv = loadInfo->SetInitialSecurityCheckDone(true);
NS_ENSURE_SUCCESS(rv, rv);
// since aChannel was openend using asyncOpen2() we have to make sure
// that redirects of that channel also get openend using asyncOpen2()
// please note that some implementations of ::AsyncOpen2 might already
// have set that flag to true (e.g. nsViewSourceChannel) in which case
// we just set the flag again.
rv = loadInfo->SetEnforceSecurity(true);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIURI> finalChannelURI;
rv = NS_GetFinalChannelURI(aChannel, getter_AddRefs(finalChannelURI));
NS_ENSURE_SUCCESS(rv, rv);
// Perform Same Origin Policy check
rv = DoSOPChecks(finalChannelURI, loadInfo);
NS_ENSURE_SUCCESS(rv, rv);
// if dealing with a redirected channel then we only enforce SOP
// and can return at this point.
if (initialSecurityCheckDone) {
return NS_OK;
}
rv = DoCheckLoadURIChecks(finalChannelURI, loadInfo);
NS_ENSURE_SUCCESS(rv, rv);
// Check if CORS needs to be set up
rv = DoCORSChecks(aChannel, loadInfo, aInAndOutListener);
NS_ENSURE_SUCCESS(rv, rv);
// Perform all ContentPolicy checks (MixedContent, CSP, ...)
rv = DoContentSecurityChecks(finalChannelURI, loadInfo);
NS_ENSURE_SUCCESS(rv, rv);
// all security checks passed - lets allow the load
return NS_OK;
}
