void AbstractHandler::recoverRelayState(
const Application& application, const HTTPRequest& request, HTTPResponse& response, string& relayState, bool clear
) const
{
SPConfig& conf = SPConfig::getConfig();
// Look for StorageService-backed state of the form "ss:SSID:key".
const char* state = relayState.c_str();
if (strstr(state,"ss:")==state) {
state += 3;
const char* key = strchr(state,':');
if (key) {
string ssid = relayState.substr(3, key - state);
key++;
if (!ssid.empty() && *key) {
if (conf.isEnabled(SPConfig::OutOfProcess)) {
#ifndef SHIBSP_LITE
StorageService* storage = conf.getServiceProvider()->getStorageService(ssid.c_str());
if (storage) {
ssid = key;
if (storage->readString("RelayState",ssid.c_str(),&relayState)>0) {
if (clear)
storage->deleteString("RelayState",ssid.c_str());
return;
}
else
relayState.erase();
}
else {
m_log.error("Storage-backed RelayState with invalid StorageService ID (%s)", ssid.c_str());
relayState.erase();
}
#endif
}
else if (conf.isEnabled(SPConfig::InProcess)) {
DDF out,in = DDF("get::RelayState").structure();
in.addmember("id").string(ssid.c_str());
in.addmember("key").string(key);
in.addmember("clear").integer(clear ? 1 : 0);
DDFJanitor jin(in),jout(out);
out = application.getServiceProvider().getListenerService()->send(in);
if (!out.isstring()) {
m_log.error("StorageService-backed RelayState mechanism did not return a state value.");
relayState.erase();
}
else {
relayState = out.string();
return;
}
}
}
}
}
// Look for cookie-backed state of the form "cookie:key".
if (strstr(state,"cookie:")==state) {
state += 7;
if (*state) {
// Pull the value from the "relay state" cookie.
pair<string,const char*> relay_cookie = application.getCookieNameProps("_shibstate_");
relay_cookie.first = string("_shibstate_") + state;
state = request.getCookie(relay_cookie.first.c_str());
if (state && *state) {
// URL-decode the value.
char* rscopy=strdup(state);
XMLToolingConfig::getConfig().getURLEncoder()->decode(rscopy);
relayState = rscopy;
free(rscopy);
if (clear) {
string exp(relay_cookie.second);
exp += "; expires=Mon, 01 Jan 2001 00:00:00 GMT";
response.setCookie(relay_cookie.first.c_str(), exp.c_str());
}
return;
}
}
relayState.erase();
}
// Check for "default" value (or the old "cookie" value that might come from stale bookmarks).
if (relayState.empty() || relayState == "default" || relayState == "cookie") {
pair<bool,const char*> homeURL=application.getString("homeURL");
if (homeURL.first)
relayState=homeURL.second;
else {
// Compute a URL to the root of the site.
int port = request.getPort();
const char* scheme = request.getScheme();
relayState = string(scheme) + "://" + request.getHostname();
if ((!strcmp(scheme,"http") && port!=80) || (!strcmp(scheme,"https") && port!=443)) {
ostringstream portstr;
portstr << port;
relayState += ":" + portstr.str();
}
relayState += '/';
}
}
}
