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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/* $Rev$ $Date$ */
#ifndef tuscany_openauth_hpp
#define tuscany_openauth_hpp
/**
* Tuscany Open auth support utility functions.
*/
#include "string.hpp"
#include "stream.hpp"
#include "list.hpp"
#include "tree.hpp"
#include "value.hpp"
#include "monad.hpp"
#include "../json/json.hpp"
#include "../http/httpd.hpp"
#include "../http/http.hpp"
namespace tuscany {
namespace openauth {
/**
* Return the session id from a request.
*/
const char* const cookieName(const char* const cs) {
if (*cs != ' ')
return cs;
return cookieName(cs + 1);
}
const maybe<string> sessionID(const list<string>& c, const string& key) {
if (isNull(c))
return maybe<string>();
const string cn = cookieName(c_str(car(c)));
const size_t i = find(cn, "=");
if (i < length(cn)) {
const list<string> kv = mklist<string>(substr(cn, 0, i), substr(cn, i+1));
if (!isNull(kv) && !isNull(cdr(kv))) {
if (car(kv) == key)
return cadr(kv);
}
}
return sessionID(cdr(c), key);
}
const maybe<string> sessionID(const request_rec* const r, const string& key) {
const string c = httpd::cookie(r);
debug(c, "openauth::sessionid::cookies");
if (length(c) == 0)
return maybe<string>();
return sessionID(tokenize(";", c), key);
}
/**
* Convert a number of seconds to an expiration date.
*/
const string expires(const int s) {
const time_t t = time(NULL) + s;
char exp[32];
strftime(exp, 32, "%a, %d-%b-%Y %H:%M:%S GMT", gmtime(&t));
return string(exp);
}
/**
* Convert a session id to a cookie string.
*/
const string cookie(const string& key, const string& sid, const string& domain) {
if (length(sid) == 0) {
const string c = key + string("=") + "; max-age=0; domain=." + httpd::realm(domain) + "; path=/; secure; httponly";
debug(c, "openauth::cookie");
return c;
}
const string exp = "604800";
const string c = key + string("=") + sid + (length(exp) != 0? string("; max-age=") + exp : emptyString) + "; domain=." + httpd::realm(domain) + "; path=/; secure; httponly";
debug(c, "openauth::cookie");
return c;
}
/**
* Redirect to the configured login page.
*/
const failable<int> login(const string& page, const value& ref, const value& attempt, request_rec* const r) {
// Don't redirect non-cacheable requests, just respond with an uncacheable 403 response
const char* cc = apr_table_get(r->headers_in, "X-Cache-Control");
if(cc != NULL && !strcmp(cc, "no-cache")) {
apr_table_setn(r->headers_out, "Cache-Control", "no-cache, no-store, must-revalidate, max-age=0");
apr_table_setn(r->err_headers_out, "Cache-Control", "no-cache, no-store, must-revalidate, max-age=0");
return HTTP_FORBIDDEN;
}
// Redirect to the login page
const list<value> rarg = ref == string("/")? nilListValue : mklist<value>(mklist<value>("openauth_referrer", httpd::escape(httpd::url(isNull(ref)? r->uri : ref, r))));
const list<value> aarg = isNull(attempt)? nilListValue : mklist<value>(mklist<value>("openauth_attempt", attempt));
const list<value> largs = append(rarg, aarg);
const string loc = isNull(largs)? httpd::url(page, r) : httpd::url(page, r) + string("?") + http::queryString(largs);
debug(loc, "openauth::login::uri");
return httpd::externalRedirect(loc, r);
}
/**
* Report a request auth status.
*/
const int reportStatus(const failable<int>& authrc, const string& page, const value& attempt, request_rec* const r) {
debug(authrc, "openauth::reportStatus::authrc");
// Redirect to the login page if not authorized
if (!hasContent(authrc) && rcode(authrc) == HTTP_UNAUTHORIZED) {
// Clear any auth cookies
if(hasContent(sessionID(r, "TuscanyOpenAuth")))
apr_table_set(r->err_headers_out, "Set-Cookie", c_str(cookie("TuscanyOpenAuth", emptyString, httpd::hostName(r))));
if(hasContent(sessionID(r, "TuscanyOpenIDAuth")))
apr_table_set(r->err_headers_out, "Set-Cookie", c_str(cookie("TuscanyOpenIDAuth", emptyString, httpd::hostName(r))));
if(hasContent(sessionID(r, "TuscanyOAuth1")))
apr_table_set(r->err_headers_out, "Set-Cookie", c_str(cookie("TuscanyOAuth1", emptyString, httpd::hostName(r))));
if(hasContent(sessionID(r, "TuscanyOAuth2")))
apr_table_set(r->err_headers_out, "Set-Cookie", c_str(cookie("TuscanyOAuth2", emptyString, httpd::hostName(r))));
return httpd::reportStatus(login(page, string("/"), attempt, r));
}
return httpd::reportStatus(authrc);
}
}
}
#endif /* tuscany_openauth_hpp */
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