/*
- * The Shibboleth License, Version 1.
- * Copyright (c) 2002
- * University Corporation for Advanced Internet Development, Inc.
- * All rights reserved
+ * Copyright 2001-2009 Internet2
*
+ * Licensed 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
*
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
+ * http://www.apache.org/licenses/LICENSE-2.0
*
- * Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- *
- * Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution, if any, must include
- * the following acknowledgment: "This product includes software developed by
- * the University Corporation for Advanced Internet Development
- * <http://www.ucaid.edu>Internet2 Project. Alternately, this acknowledegement
- * may appear in the software itself, if and wherever such third-party
- * acknowledgments normally appear.
- *
- * Neither the name of Shibboleth nor the names of its contributors, nor
- * Internet2, nor the University Corporation for Advanced Internet Development,
- * Inc., nor UCAID may be used to endorse or promote products derived from this
- * software without specific prior written permission. For written permission,
- * please contact shibboleth@shibboleth.org
- *
- * Products derived from this software may not be called Shibboleth, Internet2,
- * UCAID, or the University Corporation for Advanced Internet Development, nor
- * may Shibboleth appear in their name, without prior written permission of the
- * University Corporation for Advanced Internet Development.
- *
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND WITH ALL FAULTS. ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE, AND NON-INFRINGEMENT ARE DISCLAIMED AND THE ENTIRE RISK
- * OF SATISFACTORY QUALITY, PERFORMANCE, ACCURACY, AND EFFORT IS WITH LICENSEE.
- * IN NO EVENT SHALL THE COPYRIGHT OWNER, CONTRIBUTORS OR THE UNIVERSITY
- * CORPORATION FOR ADVANCED INTERNET DEVELOPMENT, INC. BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 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.
*/
/* isapi_shib.cpp - Shibboleth ISAPI filter
#include <shib/shib-threads.h>
#include <shib-target/shib-target.h>
-#include <log4cpp/Category.hh>
-
#include <ctime>
#include <fstream>
#include <sstream>
#include <stdexcept>
+#include <process.h>
#include <httpfilt.h>
#include <httpext.h>
using namespace std;
-using namespace log4cpp;
using namespace saml;
using namespace shibboleth;
using namespace shibtarget;
namespace {
static const XMLCh name[] = { chLatin_n, chLatin_a, chLatin_m, chLatin_e, chNull };
static const XMLCh port[] = { chLatin_p, chLatin_o, chLatin_r, chLatin_t, chNull };
+ static const XMLCh sslport[] = { chLatin_s, chLatin_s, chLatin_l, chLatin_p, chLatin_o, chLatin_r, chLatin_t, chNull };
static const XMLCh scheme[] = { chLatin_s, chLatin_c, chLatin_h, chLatin_e, chLatin_m, chLatin_e, chNull };
static const XMLCh id[] = { chLatin_i, chLatin_d, chNull };
static const XMLCh Implementation[] =
{ chLatin_I, chLatin_m, chLatin_p, chLatin_l, chLatin_e, chLatin_m, chLatin_e, chLatin_n, chLatin_t, chLatin_a, chLatin_t, chLatin_i, chLatin_o, chLatin_n, chNull };
static const XMLCh ISAPI[] = { chLatin_I, chLatin_S, chLatin_A, chLatin_P, chLatin_I, chNull };
+ static const XMLCh Alias[] = { chLatin_A, chLatin_l, chLatin_i, chLatin_a, chLatin_s, chNull };
static const XMLCh normalizeRequest[] =
{ chLatin_n, chLatin_o, chLatin_r, chLatin_m, chLatin_a, chLatin_l, chLatin_i, chLatin_z, chLatin_e,
chLatin_R, chLatin_e, chLatin_q, chLatin_u, chLatin_e, chLatin_s, chLatin_t, chNull
};
+ static const XMLCh safeHeaderNames[] =
+ { chLatin_s, chLatin_a, chLatin_f, chLatin_e, chLatin_H, chLatin_e, chLatin_a, chLatin_d, chLatin_e, chLatin_r,
+ chLatin_N, chLatin_a, chLatin_m, chLatin_e, chLatin_s, chNull
+ };
static const XMLCh Site[] = { chLatin_S, chLatin_i, chLatin_t, chLatin_e, chNull };
struct site_t {
auto_ptr_char n(e->getAttributeNS(NULL,name));
auto_ptr_char s(e->getAttributeNS(NULL,scheme));
auto_ptr_char p(e->getAttributeNS(NULL,port));
+ auto_ptr_char p2(e->getAttributeNS(NULL,sslport));
if (n.get()) m_name=n.get();
if (s.get()) m_scheme=s.get();
if (p.get()) m_port=p.get();
+ if (p2.get()) m_sslport=p2.get();
+ DOMNodeList* nlist=e->getElementsByTagNameNS(shibtarget::XML::SHIBTARGET_NS,Alias);
+ for (int i=0; nlist && i<nlist->getLength(); i++) {
+ if (nlist->item(i)->hasChildNodes()) {
+ auto_ptr_char alias(nlist->item(i)->getFirstChild()->getNodeValue());
+ m_aliases.insert(alias.get());
+ }
+ }
}
- string m_scheme,m_name,m_port;
+ string m_scheme,m_port,m_sslport,m_name;
+ set<string> m_aliases;
};
-
+
HINSTANCE g_hinstDLL;
ShibTargetConfig* g_Config = NULL;
map<string,site_t> g_Sites;
bool g_bNormalizeRequest = true;
+ string g_unsetHeaderValue,g_spoofKey;
+ set<string> g_allowedSchemes;
+ bool g_checkSpoofing = true;
+ bool g_catchAll = true;
+ bool g_bSafeHeaderNames = false;
}
BOOL LogEvent(
LPCSTR message)
{
LPCSTR messages[] = {message, NULL};
-
+
HANDLE hElog = RegisterEventSource(lpUNCServerName, "Shibboleth ISAPI Filter");
BOOL res = ReportEvent(hElog, wType, 0, dwEventID, lpUserSid, 1, 0, messages, NULL);
return (DeregisterEventSource(hElog) && res);
{
if (!pVer)
return FALSE;
-
+
if (!g_Config)
{
LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL,
return TRUE;
}
- try
- {
+ try {
LPCSTR schemadir=getenv("SHIBSCHEMAS");
if (!schemadir)
schemadir=SHIB_SCHEMAS;
ShibTargetConfig::Metadata |
ShibTargetConfig::AAP |
ShibTargetConfig::RequestMapper |
- ShibTargetConfig::SHIREExtensions |
+ ShibTargetConfig::LocalExtensions |
ShibTargetConfig::Logging
);
- if (!g_Config->init(schemadir,config)) {
+ if (!g_Config->init(schemadir)) {
+ g_Config=NULL;
+ LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL,
+ "Filter startup failed during library initialization, check native log for help.");
+ return FALSE;
+ }
+ else if (!g_Config->load(config)) {
g_Config=NULL;
LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL,
- "Filter startup failed during initialization, check shire log for help.");
+ "Filter startup failed to load configuration, check native log for help.");
return FALSE;
}
-
+
// Access the implementation-specifics for site mappings.
IConfig* conf=g_Config->getINI();
Locker locker(conf);
- const IPropertySet* props=conf->getPropertySet("SHIRE");
+ const IPropertySet* props=conf->getPropertySet("Local");
if (props) {
+ pair<bool,bool> flag=props->getBool("checkSpoofing");
+ g_checkSpoofing = !flag.first || flag.second;
+ flag=props->getBool("catchAll");
+ g_catchAll = !flag.first || flag.second;
+
+ pair<bool,const char*> str=props->getString("unsetHeaderValue");
+ if (str.first)
+ g_unsetHeaderValue = str.second;
+
+ str=props->getString("allowedSchemes");
+ if (str.first) {
+ string schemes=str.second;
+ unsigned int j=0;
+ for (unsigned int i=0; i < schemes.length(); i++) {
+ if (schemes.at(i)==' ') {
+ g_allowedSchemes.insert(schemes.substr(j, i-j));
+ j = i+1;
+ }
+ }
+ g_allowedSchemes.insert(schemes.substr(j, schemes.length()-j));
+ }
+
+ if (g_checkSpoofing) {
+ str = props->getString("spoofKey");
+ if (str.first)
+ g_spoofKey = str.second;
+ else {
+ LogEvent(NULL, EVENTLOG_WARNING_TYPE, 2100, NULL,
+ "Filter generating a pseudorandom anti-spoofing key, consider setting spoofKey yourself.");
+ srand(time(NULL));
+ ostringstream keystr;
+ keystr << rand() << rand() << rand() << rand();
+ g_spoofKey = keystr.str();
+ }
+ }
+
const DOMElement* impl=saml::XML::getFirstChildElement(
- props->getElement(),ShibTargetConfig::SHIBTARGET_NS,Implementation
+ props->getElement(),shibtarget::XML::SHIBTARGET_NS,Implementation
);
- if (impl && (impl=saml::XML::getFirstChildElement(impl,ShibTargetConfig::SHIBTARGET_NS,ISAPI))) {
- const XMLCh* flag=impl->getAttributeNS(NULL,normalizeRequest);
- g_bNormalizeRequest=(!flag || !*flag || *flag==chDigit_1 || *flag==chLatin_t);
- impl=saml::XML::getFirstChildElement(impl,ShibTargetConfig::SHIBTARGET_NS,Site);
+ if (impl && (impl=saml::XML::getFirstChildElement(impl,shibtarget::XML::SHIBTARGET_NS,ISAPI))) {
+ const XMLCh* ch=impl->getAttributeNS(NULL,normalizeRequest);
+ g_bNormalizeRequest=(!ch || !*ch || *ch==chDigit_1 || *ch==chLatin_t);
+ ch=impl->getAttributeNS(NULL,safeHeaderNames);
+ g_bSafeHeaderNames=(ch && (*ch==chDigit_1 || *ch==chLatin_t));
+ impl=saml::XML::getFirstChildElement(impl,shibtarget::XML::SHIBTARGET_NS,Site);
while (impl) {
auto_ptr_char id(impl->getAttributeNS(NULL,id));
if (id.get())
g_Sites.insert(pair<string,site_t>(id.get(),site_t(impl)));
- impl=saml::XML::getNextSiblingElement(impl,ShibTargetConfig::SHIBTARGET_NS,Site);
+ impl=saml::XML::getNextSiblingElement(impl,shibtarget::XML::SHIBTARGET_NS,Site);
}
}
}
+ if (g_allowedSchemes.empty()) {
+ g_allowedSchemes.insert("https");
+ g_allowedSchemes.insert("http");
+ }
}
- catch (...)
- {
+ catch (exception&) {
LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL, "Filter startup failed with an exception.");
-#ifdef _DEBUG
- throw;
-#endif
return FALSE;
}
s.erase();
size=s.size();
- while (lpECB->GetServerVariable(lpECB->ConnID,lpszVariable,s,&size))
+ while (!lpECB->GetServerVariable(lpECB->ConnID,lpszVariable,s,&size))
{
// Grumble. Check the error.
DWORD e=GetLastError();
class ShibTargetIsapiF : public ShibTarget
{
+ PHTTP_FILTER_CONTEXT m_pfc;
+ PHTTP_FILTER_PREPROC_HEADERS m_pn;
+ string m_cookie;
+ dynabuf m_allhttp;
+ bool m_firsttime;
+
+ void checkString(const string& s, const char* msg) {
+ string::const_iterator e = s.end();
+ for (string::const_iterator i=s.begin(); i!=e; ++i) {
+ if (iscntrl(*i))
+ throw FatalProfileException(msg);
+ }
+ }
+
public:
- ShibTargetIsapiF(PHTTP_FILTER_CONTEXT pfc, PHTTP_FILTER_PREPRC_HEADERS pn,
- const site_t& site) {
+ ShibTargetIsapiF(PHTTP_FILTER_CONTEXT pfc, PHTTP_FILTER_PREPROC_HEADERS pn, const site_t& site)
+ : m_pfc(pfc), m_pn(pn), m_allhttp(4096), m_firsttime(true) {
// URL path always come from IIS.
dynabuf url(256);
// Port may come from IIS or from site def.
dynabuf port(11);
- if (site.m_port.empty() || !g_bNormalizeRequest)
+ if (!g_bNormalizeRequest || (pfc->fIsSecurePort && site.m_sslport.empty()) || (!pfc->fIsSecurePort && site.m_port.empty()))
GetServerVariable(pfc,"SERVER_PORT",port,10);
+ else if (pfc->fIsSecurePort) {
+ strncpy(port,site.m_sslport.c_str(),10);
+ static_cast<char*>(port)[10]=0;
+ }
else {
strncpy(port,site.m_port.c_str(),10);
static_cast<char*>(port)[10]=0;
}
-
+
// Scheme may come from site def or be derived from IIS.
const char* scheme=site.m_scheme.c_str();
if (!scheme || !*scheme || !g_bNormalizeRequest)
scheme=pfc->fIsSecurePort ? "https" : "http";
- // Get the remote address
- dynabuf remote_addr(16);
+ // Get the rest of the server variables.
+ dynabuf remote_addr(16),method(5),content_type(32),hostname(32);
+ GetServerVariable(pfc,"SERVER_NAME",hostname,32);
GetServerVariable(pfc,"REMOTE_ADDR",remote_addr,16);
+ GetServerVariable(pfc,"REQUEST_METHOD",method,5,false);
+ GetServerVariable(pfc,"CONTENT_TYPE",content_type,32,false);
- // XXX: How do I get the content type and HTTP Method from this context?
+ // Make sure SERVER_NAME is "authorized" for use on this site. If not, set to canonical name.
+ const char* host=hostname;
+ if (site.m_name!=host && site.m_aliases.find(host)==site.m_aliases.end())
+ host=site.m_name.c_str();
- init(g_Config, string(scheme), site.m_name, atoi(port),
- string(url), string(""), // XXX: content type
- string(remote_addr), string("") // XXX: http method
- );
+ init(scheme, host, atoi(port), url, content_type, remote_addr, method);
- m_pfc = pfc;
- m_pn = pn;
+ if (!g_spoofKey.empty()) {
+ GetHeader(pn, pfc, "ShibSpoofCheck:", url, 32, false);
+ if (!url.empty() && g_spoofKey == (char*)url)
+ m_firsttime = false;
+ }
+
+ if (!m_firsttime)
+ log(LogLevelDebug, "ISAPI filter running more than once");
}
- ~ShibTargetIsapiF() { }
+ ~ShibTargetIsapiF() {}
virtual void log(ShibLogLevel level, const string &msg) {
- LogEvent(NULL, (level == LogLevelDebug : EVENTLOG_DEBUG_TYPE ?
- (level == LogLevelInfo : EVENTLOG_INFORMATION_TYPE ?
- (level == LogLevelWarn : EVENTLOG_WARNING_TYPE ?
- EVENTLOG_ERROR_TYPE))),
- 2100, NULL, msg.c_str());
+ ShibTarget::log(level,msg);
}
- virtual string getCookies(void) {
+ virtual string getCookies() const {
dynabuf buf(128);
GetHeader(m_pn, m_pfc, "Cookie:", buf, 128, false);
+ return buf.empty() ? "" : buf;
+ }
+ string makeSafeHeader(const char* rawname) const {
+ string hdr;
+ for (; *rawname; ++rawname) {
+ if (isalnum(*rawname))
+ hdr += *rawname;
+ }
+ return hdr + ':';
}
- // XXX: the filter never processes the POST.
- //virtual void setCookie(const string &name, const string &value) { }
- //virtual string getArgs(void) { }
- //virtual string getPostData(void) { }
virtual void clearHeader(const string &name) {
- string hdr = name + ":";
- m_pn->SetHeader(m_pfc, const_cast<char*>(hdr.c_str()), "");
+ if (g_checkSpoofing && m_firsttime) {
+ if (m_allhttp.empty())
+ GetServerVariable(m_pfc,"ALL_HTTP",m_allhttp,4096);
+
+ // Map to the expected CGI variable name.
+ string transformed("HTTP_");
+ if (g_bSafeHeaderNames) {
+ string temp = makeSafeHeader(name.c_str());
+ for (const char* pch = temp.c_str(); *pch; ++pch) {
+ if (isalnum(*pch))
+ transformed += toupper(*pch);
+ }
+ }
+ else {
+ for (const char* pch = name.c_str(); *pch; ++pch)
+ transformed += (isalnum(*pch) ? toupper(*pch) : '_');
+ transformed += ':';
+ }
+
+ if (strstr(m_allhttp, transformed.c_str()))
+ throw SAMLException("Attempt to spoof header ($1) was detected.", params(1, transformed.c_str()));
+ }
+ if (g_bSafeHeaderNames) {
+ string hdr = makeSafeHeader(name.c_str());
+ m_pn->SetHeader(m_pfc, const_cast<char*>(hdr.c_str()), const_cast<char*>(g_unsetHeaderValue.c_str()));
+ }
+ else if (name == "REMOTE_USER") {
+ m_pn->SetHeader(m_pfc, "remote-user:", const_cast<char*>(g_unsetHeaderValue.c_str()));
+ m_pn->SetHeader(m_pfc, "remote_user:", const_cast<char*>(g_unsetHeaderValue.c_str()));
+ }
+ else {
+ string hdr = name + ':';
+ m_pn->SetHeader(m_pfc, const_cast<char*>(hdr.c_str()), const_cast<char*>(g_unsetHeaderValue.c_str()));
+ }
}
virtual void setHeader(const string &name, const string &value) {
- string hdr = name + ":";
- m_pn->SetHeader(m_pfc, const_cast<char*>(hdr.c_str()),
- const_cast<char*>(value.c_str()));
+ string hdr = g_bSafeHeaderNames ? makeSafeHeader(name.c_str()) : (name + ':');
+ m_pn->SetHeader(m_pfc, const_cast<char*>(hdr.c_str()), const_cast<char*>(value.c_str()));
}
virtual string getHeader(const string &name) {
- string hdr = name + ":";
- dynabuf buf(1024);
- GetHeader(m_pn, m_pfc, hdr.c_str(), buf, 1024, false);
- return string(buf);
+ string hdr = g_bSafeHeaderNames ? makeSafeHeader(name.c_str()) : (name + ':');
+ dynabuf buf(256);
+ GetHeader(m_pn, m_pfc, const_cast<char*>(hdr.c_str()), buf, 1024, false);
+ return string(buf.empty() ? "" : buf);
}
virtual void setRemoteUser(const string &user) {
setHeader(string("remote-user"), user);
+ if (m_pfc->pFilterContext) {
+ if (user.empty())
+ m_pfc->pFilterContext = NULL;
+ else if (m_pfc->pFilterContext = m_pfc->AllocMem(m_pfc, sizeof(char) * (user.length() + 1), NULL))
+ strcpy(reinterpret_cast<char*>(m_pfc->pFilterContext), user.c_str());
+ }
}
virtual string getRemoteUser(void) {
return getHeader(string("remote-user"));
}
- virtual void* sendPage(const string &msg, const string content_type,
- const pair<string, string> headers[], int code) {
+ virtual void* sendPage(
+ const string& msg,
+ int code=200,
+ const string& content_type="text/html",
+ const Iterator<header_t>& headers=EMPTY(header_t)) {
+ checkString(content_type, "Detected control character in a response header.");
string hdr = string ("Connection: close\r\nContent-type: ") + content_type + "\r\n";
- for (int k = 0; k < headers.size(); k++) {
- hdr += headers[k].first + ": " + headers[k].second + "\r\n";
+ while (headers.hasNext()) {
+ const header_t& h=headers.next();
+ checkString(h.first, "Detected control character in a response header.");
+ checkString(h.second, "Detected control character in a response header.");
+ hdr += h.first + ": " + h.second + "\r\n";
}
hdr += "\r\n";
- // XXX Need to handle "code"
- m_pfc->ServerSupportFunction(m_pfc, SF_REQ_SEND_RESPONSE_HEADER, "200 OK",
- (dword)hdr.c_str(), 0);
+ const char* codestr="200 OK";
+ switch (code) {
+ case 403: codestr="403 Forbidden"; break;
+ case 404: codestr="404 Not Found"; break;
+ case 500: codestr="500 Server Error"; break;
+ }
+ m_pfc->ServerSupportFunction(m_pfc, SF_REQ_SEND_RESPONSE_HEADER, (void*)codestr, (DWORD)hdr.c_str(), 0);
DWORD resplen = msg.size();
m_pfc->WriteClient(m_pfc, (LPVOID)msg.c_str(), &resplen, 0);
return (void*)SF_STATUS_REQ_FINISHED;
}
- virtual void* sendRedirect(const string url) {
+ virtual void* sendRedirect(const string& url) {
+ checkString(url, "Detected control character in an attempted redirect.");
+ if (g_allowedSchemes.find(url.substr(0, url.find(':'))) == g_allowedSchemes.end())
+ throw FatalProfileException("Invalid scheme in attempted redirect.");
// XXX: Don't support the httpRedirect option, yet.
- string hdrs=string("Location: ") + url + "\r\n"
+ string hdrs=m_cookie + string("Location: ") + url + "\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 40\r\n"
"Expires: 01-Jan-1997 12:00:00 GMT\r\n"
static const char* redmsg="<HTML><BODY>Redirecting...</BODY></HTML>";
DWORD resplen=40;
m_pfc->WriteClient(m_pfc, (LPVOID)redmsg, &resplen, 0);
- return SF_STATUS_REQ_FINISHED;
+ return reinterpret_cast<void*>(SF_STATUS_REQ_FINISHED);
}
// XXX: We might not ever hit the 'decline' status in this filter.
//virtual void* returnDecline(void) { }
virtual void* returnOK(void) { return (void*) SF_STATUS_REQ_NEXT_NOTIFICATION; }
- PHTTP_FILTER_CONTEXT m_pfc;
- PHTTP_FILTER_PREPRC_HEADERS m_pn
+ // The filter never processes the POST, so stub these methods.
+ virtual void setCookie(const string &name, const string &value) {
+ // Set the cookie for later. Use it during the redirect.
+ m_cookie += "Set-Cookie: " + name + "=" + value + "\r\n";
+ }
+ virtual string getArgs(void) { throw runtime_error("getArgs not implemented"); }
+ virtual string getPostData(void) { throw runtime_error("getPostData not implemented"); }
};
-IRequestMapper::Settings map_request(
- PHTTP_FILTER_CONTEXT pfc, PHTTP_FILTER_PREPROC_HEADERS pn, IRequestMapper* mapper, const site_t& site, string& target
- )
-{
- // URL path always come from IIS.
- dynabuf url(256);
- GetHeader(pn,pfc,"url",url,256,false);
-
- // Port may come from IIS or from site def.
- dynabuf port(11);
- if (site.m_port.empty() || !g_bNormalizeRequest)
- GetServerVariable(pfc,"SERVER_PORT",port,10);
- else {
- strncpy(port,site.m_port.c_str(),10);
- static_cast<char*>(port)[10]=0;
- }
-
- // Scheme may come from site def or be derived from IIS.
- const char* scheme=site.m_scheme.c_str();
- if (!scheme || !*scheme || !g_bNormalizeRequest)
- scheme=pfc->fIsSecurePort ? "https" : "http";
-
- // Start with scheme and hostname.
- if (g_bNormalizeRequest) {
- target = string(scheme) + "://" + site.m_name;
- }
- else {
- dynabuf name(64);
- GetServerVariable(pfc,"SERVER_NAME",name,64);
- target = string(scheme) + "://" + static_cast<char*>(name);
- }
-
- // If port is non-default, append it.
- if ((!strcmp(scheme,"http") && port!="80") || (!strcmp(scheme,"https") && port!="443"))
- target = target + ':' + static_cast<char*>(port);
-
- // Append path.
- if (!url.empty())
- target+=static_cast<char*>(url);
-
- return mapper->getSettingsFromParsedURL(scheme,site.m_name.c_str(),strtoul(port,NULL,10),url);
-}
-
DWORD WriteClientError(PHTTP_FILTER_CONTEXT pfc, const char* msg)
{
LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL, msg);
return SF_STATUS_REQ_FINISHED;
}
-DWORD WriteClientError(PHTTP_FILTER_CONTEXT pfc, const IApplication* app, const char* page, ShibMLP& mlp)
-{
- const IPropertySet* props=app->getPropertySet("Errors");
- if (props) {
- pair<bool,const char*> p=props->getString(page);
- if (p.first) {
- ifstream infile(p.second);
- if (!infile.fail()) {
- const char* res = mlp.run(infile,props);
- if (res) {
- static const char* ctype="Connection: close\r\nContent-Type: text/html\r\n\r\n";
- pfc->ServerSupportFunction(pfc,SF_REQ_SEND_RESPONSE_HEADER,"200 OK",(DWORD)ctype,0);
- DWORD resplen=strlen(res);
- pfc->WriteClient(pfc,(LPVOID)res,&resplen,0);
- return SF_STATUS_REQ_FINISHED;
- }
- }
- }
- }
-
- LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL, "Filter unable to open error template.");
- return WriteClientError(pfc,"Unable to open error template, check settings.");
-}
-
-DWORD WriteRedirectPage(PHTTP_FILTER_CONTEXT pfc, const IApplication* app, const char* file, ShibMLP& mlp, const char* headers=NULL)
-{
- ifstream infile(file);
- if (!infile.fail()) {
- const char* res = mlp.run(infile,app->getPropertySet("Errors"));
- if (res) {
- char buf[255];
- sprintf(buf,"Content-Length: %u\r\nContent-Type: text/html\r\n\r\n",strlen(res));
- if (headers) {
- string h(headers);
- h+=buf;
- pfc->ServerSupportFunction(pfc,SF_REQ_SEND_RESPONSE_HEADER,"200 OK",(DWORD)h.c_str(),0);
- }
- else
- pfc->ServerSupportFunction(pfc,SF_REQ_SEND_RESPONSE_HEADER,"200 OK",(DWORD)buf,0);
- DWORD resplen=strlen(res);
- pfc->WriteClient(pfc,(LPVOID)res,&resplen,0);
- return SF_STATUS_REQ_FINISHED;
- }
- }
- LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL, "Extension unable to open redirect template.");
- return WriteClientError(pfc,"Unable to open redirect template, check settings.");
-}
-
extern "C" DWORD WINAPI HttpFilterProc(PHTTP_FILTER_CONTEXT pfc, DWORD notificationType, LPVOID pvNotification)
{
// Is this a log notification?
- if (notificationType==SF_NOTIFY_LOG)
- {
+ if (notificationType==SF_NOTIFY_LOG) {
if (pfc->pFilterContext)
- ((PHTTP_FILTER_LOG)pvNotification)->pszClientUserName=static_cast<LPCSTR>(pfc->pFilterContext);
+ ((PHTTP_FILTER_LOG)pvNotification)->pszClientUserName=reinterpret_cast<char*>(pfc->pFilterContext);
return SF_STATUS_REQ_NEXT_NOTIFICATION;
}
PHTTP_FILTER_PREPROC_HEADERS pn=(PHTTP_FILTER_PREPROC_HEADERS)pvNotification;
- try
- {
+ try {
// Determine web site number. This can't really fail, I don't think.
dynabuf buf(128);
GetServerVariable(pfc,"INSTANCE_ID",buf,10);
map<string,site_t>::const_iterator map_i=g_Sites.find(static_cast<char*>(buf));
if (map_i==g_Sites.end())
return SF_STATUS_REQ_NEXT_NOTIFICATION;
-
+
ostringstream threadid;
threadid << "[" << getpid() << "] isapi_shib" << '\0';
saml::NDC ndc(threadid.str().c_str());
-
- // We lock the configuration system for the duration.
- IConfig* conf=g_Config->getINI();
- Locker locker(conf);
-
- // Map request to application and content settings.
- string targeturl;
- IRequestMapper* mapper=conf->getRequestMapper();
- Locker locker2(mapper);
- IRequestMapper::Settings settings=map_request(pfc,pn,mapper,map_i->second,targeturl);
- pair<bool,const char*> application_id=settings.first->getString("applicationId");
- const IApplication* application=conf->getApplication(application_id.second);
- if (!application)
- return WriteClientError(pfc,"Unable to map request to application settings, check configuration.");
-
- // Declare SHIRE object for this request.
- SHIRE shire(application);
-
- const char* shireURL=shire.getShireURL(targeturl.c_str());
- if (!shireURL)
- return WriteClientError(pfc,"Unable to map request to proper shireURL setting, check configuration.");
-
- // If the user is accessing the SHIRE acceptance point, pass it on.
- if (targeturl.find(shireURL)!=string::npos)
- return SF_STATUS_REQ_NEXT_NOTIFICATION;
- // Now check the policy for this request.
- pair<bool,bool> requireSession=settings.first->getBool("requireSession");
- pair<const char*,const char*> shib_cookie=shire.getCookieNameProps();
- pair<bool,bool> httpRedirects=application->getPropertySet("Sessions")->getBool("httpRedirects");
- pair<bool,const char*> redirectPage=application->getPropertySet("Sessions")->getString("redirectPage");
- if (httpRedirects.first && !httpRedirects.second && !redirectPage.first)
- return WriteClientError(pfc,"HTML-based redirection requires a redirectPage property.");
-
- // Check for session cookie.
- const char* session_id=NULL;
- GetHeader(pn,pfc,"Cookie:",buf,128,false);
- Category::getInstance("isapi_shib.HttpFilterProc").debug("cookie header is {%s}",(const char*)buf);
- if (!buf.empty() && (session_id=strstr(buf,shib_cookie.first))) {
- session_id+=strlen(shib_cookie.first) + 1; /* Skip over the '=' */
- char* cookieend=strchr(session_id,';');
- if (cookieend)
- *cookieend = '\0'; /* Ignore anyting after a ; */
- }
-
- if (!session_id || !*session_id) {
- // If no session required, bail now.
- if (!requireSession.second)
- return SF_STATUS_REQ_NEXT_NOTIFICATION;
-
- // No acceptable cookie, and we require a session. Generate an AuthnRequest.
- const char* areq = shire.getAuthnRequest(targeturl.c_str());
- if (!httpRedirects.first || httpRedirects.second) {
- string hdrs=string("Location: ") + areq + "\r\n"
- "Content-Type: text/html\r\n"
- "Content-Length: 40\r\n"
- "Expires: 01-Jan-1997 12:00:00 GMT\r\n"
- "Cache-Control: private,no-store,no-cache\r\n\r\n";
- pfc->ServerSupportFunction(pfc,SF_REQ_SEND_RESPONSE_HEADER,"302 Please Wait",(DWORD)hdrs.c_str(),0);
- static const char* redmsg="<HTML><BODY>Redirecting...</BODY></HTML>";
- DWORD resplen=40;
- pfc->WriteClient(pfc,(LPVOID)redmsg,&resplen,0);
- return SF_STATUS_REQ_FINISHED;
- }
- else {
- ShibMLP markupProcessor;
- markupProcessor.insert("requestURL",areq);
- return WriteRedirectPage(pfc, application, redirectPage.second, markupProcessor);
- }
- }
+ ShibTargetIsapiF stf(pfc, pn, map_i->second);
- // Make sure this session is still valid.
- RPCError* status = NULL;
- ShibMLP markupProcessor;
- markupProcessor.insert("requestURL", targeturl);
-
- dynabuf abuf(16);
- GetServerVariable(pfc,"REMOTE_ADDR",abuf,16);
- try {
- status = shire.sessionIsValid(session_id, abuf);
- }
- catch (ShibTargetException &e) {
- markupProcessor.insert("errorType", "Session Processing Error");
- markupProcessor.insert("errorText", e.what());
- markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
- return WriteClientError(pfc, application, "shire", markupProcessor);
- }
-#ifndef _DEBUG
- catch (...) {
- markupProcessor.insert("errorType", "Session Processing Error");
- markupProcessor.insert("errorText", "Unexpected Exception");
- markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
- return WriteClientError(pfc, application, "shire", markupProcessor);
- }
-#endif
-
- // Check the status
- if (status->isError()) {
- if (!requireSession.second)
- return SF_STATUS_REQ_NEXT_NOTIFICATION;
- else if (status->isRetryable()) {
- // Oops, session is invalid. Generate AuthnRequest.
- delete status;
- const char* areq = shire.getAuthnRequest(targeturl.c_str());
- if (!httpRedirects.first || httpRedirects.second) {
- string hdrs=string("Location: ") + areq + "\r\n"
- "Content-Type: text/html\r\n"
- "Content-Length: 40\r\n"
- "Expires: 01-Jan-1997 12:00:00 GMT\r\n"
- "Cache-Control: private,no-store,no-cache\r\n\r\n";
- pfc->ServerSupportFunction(pfc,SF_REQ_SEND_RESPONSE_HEADER,"302 Please Wait",(DWORD)hdrs.c_str(),0);
- static const char* redmsg="<HTML><BODY>Redirecting...</BODY></HTML>";
- DWORD resplen=40;
- pfc->WriteClient(pfc,(LPVOID)redmsg,&resplen,0);
- return SF_STATUS_REQ_FINISHED;
- }
- else {
- markupProcessor.insert("requestURL",areq);
- return WriteRedirectPage(pfc, application, redirectPage.second, markupProcessor);
- }
- }
- else {
- // return the error page to the user
- markupProcessor.insert(*status);
- delete status;
- return WriteClientError(pfc, application, "shire", markupProcessor);
- }
- }
- delete status;
-
- // Move to RM phase.
- RM rm(application);
- vector<SAMLAssertion*> assertions;
- SAMLAuthenticationStatement* sso_statement=NULL;
-
- try {
- status = rm.getAssertions(session_id, abuf, assertions, &sso_statement);
- }
- catch (ShibTargetException &e) {
- markupProcessor.insert("errorType", "Attribute Processing Error");
- markupProcessor.insert("errorText", e.what());
- markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
- return WriteClientError(pfc, application, "rm", markupProcessor);
- }
- #ifndef _DEBUG
- catch (...) {
- markupProcessor.insert("errorType", "Attribute Processing Error");
- markupProcessor.insert("errorText", "Unexpected Exception");
- markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
- return WriteClientError(pfc, application, "rm", markupProcessor);
- }
- #endif
-
- if (status->isError()) {
- markupProcessor.insert(*status);
- delete status;
- return WriteClientError(pfc, application, "rm", markupProcessor);
- }
- delete status;
-
- // Do we have an access control plugin?
- if (settings.second) {
- Locker acllock(settings.second);
- if (!settings.second->authorized(*sso_statement,assertions)) {
- for (int k = 0; k < assertions.size(); k++)
- delete assertions[k];
- delete sso_statement;
- return WriteClientError(pfc, application, "access", markupProcessor);
- }
- }
+ // "false" because we don't override the Shib settings
+ pair<bool,void*> res = stf.doCheckAuthN();
+ if (!g_spoofKey.empty())
+ pn->SetHeader(pfc, "ShibSpoofCheck:", const_cast<char*>(g_spoofKey.c_str()));
+ if (res.first) return (DWORD)res.second;
- // Get the AAP providers, which contain the attribute policy info.
- Iterator<IAAP*> provs=application->getAAPProviders();
-
- // Clear out the list of mapped attributes
- while (provs.hasNext()) {
- IAAP* aap=provs.next();
- aap->lock();
- try {
- Iterator<const IAttributeRule*> rules=aap->getAttributeRules();
- while (rules.hasNext()) {
- const char* header=rules.next()->getHeader();
- if (header) {
- string hname=string(header) + ':';
- pn->SetHeader(pfc,const_cast<char*>(hname.c_str()),"");
- }
- }
- }
- catch(...) {
- aap->unlock();
- for (int k = 0; k < assertions.size(); k++)
- delete assertions[k];
- delete sso_statement;
- markupProcessor.insert("errorType", "Attribute Processing Error");
- markupProcessor.insert("errorText", "Unexpected Exception");
- markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
- return WriteClientError(pfc, application, "rm", markupProcessor);
- }
- aap->unlock();
- }
- provs.reset();
-
- // Maybe export the first assertion.
- pn->SetHeader(pfc,"remote-user:","");
- pn->SetHeader(pfc,"Shib-Attributes:","");
- pair<bool,bool> exp=settings.first->getBool("exportAssertion");
- if (exp.first && exp.second && assertions.size()) {
- string assertion;
- RM::serialize(*(assertions[0]), assertion);
- string::size_type lfeed;
- while ((lfeed=assertion.find('\n'))!=string::npos)
- assertion.erase(lfeed,1);
- pn->SetHeader(pfc,"Shib-Attributes:",const_cast<char*>(assertion.c_str()));
- }
-
- pn->SetHeader(pfc,"Shib-Origin-Site:","");
- pn->SetHeader(pfc,"Shib-Authentication-Method:","");
- pn->SetHeader(pfc,"Shib-NameIdentifier-Format:","");
-
- // Export the SAML AuthnMethod and the origin site name.
- auto_ptr_char os(sso_statement->getSubject()->getNameIdentifier()->getNameQualifier());
- auto_ptr_char am(sso_statement->getAuthMethod());
- pn->SetHeader(pfc,"Shib-Origin-Site:", const_cast<char*>(os.get()));
- pn->SetHeader(pfc,"Shib-Authentication-Method:", const_cast<char*>(am.get()));
-
- // Export NameID?
- AAP wrapper(provs,sso_statement->getSubject()->getNameIdentifier()->getFormat(),Constants::SHIB_ATTRIBUTE_NAMESPACE_URI);
- if (!wrapper.fail() && wrapper->getHeader()) {
- auto_ptr_char form(sso_statement->getSubject()->getNameIdentifier()->getFormat());
- auto_ptr_char nameid(sso_statement->getSubject()->getNameIdentifier()->getName());
- pn->SetHeader(pfc,"Shib-NameIdentifier-Format:",const_cast<char*>(form.get()));
- if (!strcmp(wrapper->getHeader(),"REMOTE_USER")) {
- char* principal=const_cast<char*>(nameid.get());
- pn->SetHeader(pfc,"remote-user:",principal);
- pfc->pFilterContext=pfc->AllocMem(pfc,strlen(principal)+1,0);
- if (pfc->pFilterContext)
- strcpy(static_cast<char*>(pfc->pFilterContext),principal);
- }
- else {
- string hname=string(wrapper->getHeader()) + ':';
- pn->SetHeader(pfc,const_cast<char*>(wrapper->getHeader()),const_cast<char*>(nameid.get()));
- }
- }
+ // "false" because we don't override the Shib settings
+ res = stf.doExportAssertions();
+ if (res.first) return (DWORD)res.second;
- pn->SetHeader(pfc,"Shib-Application-ID:","");
- pn->SetHeader(pfc,"Shib-Application-ID:",const_cast<char*>(application_id.second));
-
- // Export the attributes.
- Iterator<SAMLAssertion*> a_iter(assertions);
- while (a_iter.hasNext()) {
- SAMLAssertion* assert=a_iter.next();
- Iterator<SAMLStatement*> statements=assert->getStatements();
- while (statements.hasNext()) {
- SAMLAttributeStatement* astate=dynamic_cast<SAMLAttributeStatement*>(statements.next());
- if (!astate)
- continue;
- Iterator<SAMLAttribute*> attrs=astate->getAttributes();
- while (attrs.hasNext()) {
- SAMLAttribute* attr=attrs.next();
-
- // Are we supposed to export it?
- AAP wrapper(provs,attr->getName(),attr->getNamespace());
- if (wrapper.fail() || !wrapper->getHeader())
- continue;
-
- Iterator<string> vals=attr->getSingleByteValues();
- if (!strcmp(wrapper->getHeader(),"REMOTE_USER") && vals.hasNext()) {
- char* principal=const_cast<char*>(vals.next().c_str());
- pn->SetHeader(pfc,"remote-user:",principal);
- pfc->pFilterContext=pfc->AllocMem(pfc,strlen(principal)+1,0);
- if (pfc->pFilterContext)
- strcpy(static_cast<char*>(pfc->pFilterContext),principal);
- }
- else {
- int it=0;
- string header;
- string hname=string(wrapper->getHeader()) + ':';
- GetHeader(pn,pfc,const_cast<char*>(hname.c_str()),buf,256,false);
- if (!buf.empty()) {
- header=buf;
- it++;
- }
- for (; vals.hasNext(); it++) {
- string value = vals.next();
- for (string::size_type pos = value.find_first_of(";", string::size_type(0));
- pos != string::npos;
- pos = value.find_first_of(";", pos)) {
- value.insert(pos, "\\");
- pos += 2;
- }
- if (it == 0)
- header=value;
- else
- header=header + ';' + value;
- }
- pn->SetHeader(pfc,const_cast<char*>(hname.c_str()),const_cast<char*>(header.c_str()));
- }
- }
- }
- }
-
- // clean up memory
- for (int k = 0; k < assertions.size(); k++)
- delete assertions[k];
- delete sso_statement;
+ res = stf.doCheckAuthZ();
+ if (res.first) return (DWORD)res.second;
return SF_STATUS_REQ_NEXT_NOTIFICATION;
}
catch(bad_alloc) {
return WriteClientError(pfc,"Out of Memory");
}
- catch(DWORD e) {
+ catch(long e) {
if (e==ERROR_NO_DATA)
return WriteClientError(pfc,"A required variable or header was empty.");
else
- return WriteClientError(pfc,"Server detected unexpected IIS error.");
+ return WriteClientError(pfc,"Shibboleth Filter detected unexpected IIS error.");
+ }
+ catch (exception& e) {
+ LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL, e.what());
+ return WriteClientError(pfc,"Shibboleth Filter caught an exception, ask administrator to check Event Log for details.");
}
-#ifndef _DEBUG
catch(...) {
- return WriteClientError(pfc,"Server caught an unknown exception.");
+ if (g_catchAll)
+ return WriteClientError(pfc,"Shibboleth Filter caught an unknown exception.");
+ throw;
}
-#endif
- return WriteClientError(pfc,"Server reached unreachable code, save my walrus!");
+ return WriteClientError(pfc,"Shibboleth Filter reached unreachable code, save my walrus!");
}
+
/****************************************************************************/
// ISAPI Extension
+DWORD WriteClientError(LPEXTENSION_CONTROL_BLOCK lpECB, const char* msg)
+{
+ LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL, msg);
+ static const char* ctype="Connection: close\r\nContent-Type: text/html\r\n\r\n";
+ lpECB->ServerSupportFunction(lpECB->ConnID,HSE_REQ_SEND_RESPONSE_HEADER,"200 OK",0,(LPDWORD)ctype);
+ static const char* xmsg="<HTML><HEAD><TITLE>Shibboleth Error</TITLE></HEAD><BODY><H1>Shibboleth Error</H1>";
+ DWORD resplen=strlen(xmsg);
+ lpECB->WriteClient(lpECB->ConnID,(LPVOID)xmsg,&resplen,HSE_IO_SYNC);
+ resplen=strlen(msg);
+ lpECB->WriteClient(lpECB->ConnID,(LPVOID)msg,&resplen,HSE_IO_SYNC);
+ static const char* xmsg2="</BODY></HTML>";
+ resplen=strlen(xmsg2);
+ lpECB->WriteClient(lpECB->ConnID,(LPVOID)xmsg2,&resplen,HSE_IO_SYNC);
+ return HSE_STATUS_SUCCESS;
+}
+
+
class ShibTargetIsapiE : public ShibTarget
{
+ LPEXTENSION_CONTROL_BLOCK m_lpECB;
+ string m_cookie;
+
+ void checkString(const string& s, const char* msg) {
+ string::const_iterator e = s.end();
+ for (string::const_iterator i=s.begin(); i!=e; ++i) {
+ if (iscntrl(*i))
+ throw FatalProfileException(msg);
+ }
+ }
+
public:
- ShibTargetIsapiE(LPEXTENSION_CONTROL_BLOCK lpECB, const site_t& site) :
- m_cookie(NULL)
- {
+ ShibTargetIsapiE(LPEXTENSION_CONTROL_BLOCK lpECB, const site_t& site) {
dynabuf ssl(5);
GetServerVariable(lpECB,"HTTPS",ssl,5);
bool SSL=(ssl=="on" || ssl=="ON");
// Port may come from IIS or from site def.
dynabuf port(11);
- if (site.m_port.empty() || !g_bNormalizeRequest)
+ if (!g_bNormalizeRequest || (SSL && site.m_sslport.empty()) || (!SSL && site.m_port.empty()))
GetServerVariable(lpECB,"SERVER_PORT",port,10);
+ else if (SSL) {
+ strncpy(port,site.m_sslport.c_str(),10);
+ static_cast<char*>(port)[10]=0;
+ }
else {
strncpy(port,site.m_port.c_str(),10);
static_cast<char*>(port)[10]=0;
scheme = SSL ? "https" : "http";
}
- // Get the remote address
- dynabuf remote_addr(16);
+ // Get the other server variables.
+ dynabuf remote_addr(16),hostname(32);
GetServerVariable(lpECB, "REMOTE_ADDR", remote_addr, 16);
+ GetServerVariable(lpECB, "SERVER_NAME", hostname, 32);
+
+ // Make sure SERVER_NAME is "authorized" for use on this site. If not, set to canonical name.
+ const char* host=hostname;
+ if (site.m_name!=host && site.m_aliases.find(host)==site.m_aliases.end())
+ host=site.m_name.c_str();
+
+ /*
+ * IIS screws us over on PATH_INFO (the hits keep on coming). We need to figure out if
+ * the server is set up for proper PATH_INFO handling, or "IIS sucks rabid weasels mode",
+ * which is the default. No perfect way to tell, but we can take a good guess by checking
+ * whether the URL is a substring of the PATH_INFO:
+ *
+ * e.g. for /Shibboleth.sso/SAML/POST
+ *
+ * Bad mode (default):
+ * URL: /Shibboleth.sso
+ * PathInfo: /Shibboleth.sso/SAML/POST
+ *
+ * Good mode:
+ * URL: /Shibboleth.sso
+ * PathInfo: /SAML/POST
+ */
+
+ string fullurl;
+
+ // Clearly we're only in bad mode if path info exists at all.
+ if (lpECB->lpszPathInfo && *(lpECB->lpszPathInfo)) {
+ if (strstr(lpECB->lpszPathInfo,url))
+ // Pretty good chance we're in bad mode, unless the PathInfo repeats the path itself.
+ fullurl=lpECB->lpszPathInfo;
+ else {
+ fullurl = url;
+ fullurl+=lpECB->lpszPathInfo;
+ }
+ }
+ else {
+ fullurl = url;
+ }
- init(g_Config, string(scheme), site.m_name, atoi(port),
- string(url), string(lpECB->lpszContentType ? lpECB->lpszContentType : ""),
- string(remote_addr), string(lpECB->lpszMethod)
- );
+ // For consistency with Apache, let's add the query string.
+ if (lpECB->lpszQueryString && *(lpECB->lpszQueryString)) {
+ fullurl+='?';
+ fullurl+=lpECB->lpszQueryString;
+ }
+ init(scheme, host, atoi(port), fullurl.c_str(), lpECB->lpszContentType, remote_addr, lpECB->lpszMethod);
m_lpECB = lpECB;
}
~ShibTargetIsapiE() { }
virtual void log(ShibLogLevel level, const string &msg) {
- LogEvent(NULL, (level == LogLevelDebug : EVENTLOG_DEBUG_TYPE ?
- (level == LogLevelInfo : EVENTLOG_INFORMATION_TYPE ?
- (level == LogLevelWarn : EVENTLOG_WARNING_TYPE ?
- EVENTLOG_ERROR_TYPE))),
- 2100, NULL, msg.c_str());
+ ShibTarget::log(level,msg);
+ }
+ virtual string getCookies() const {
+ dynabuf buf(128);
+ GetServerVariable(m_lpECB, "HTTP_COOKIE", buf, 128, false);
+ return buf.empty() ? "" : buf;
}
- // Not used in the extension.
- //virtual string getCookies(void) { }
virtual void setCookie(const string &name, const string &value) {
// Set the cookie for later. Use it during the redirect.
m_cookie += "Set-Cookie: " + name + "=" + value + "\r\n";
}
virtual string getPostData(void) {
if (m_lpECB->cbTotalBytes > 1024*1024) // 1MB?
- throw ShibTargetException(SHIBRPC_OK,
- "blocked too-large a post to SHIRE POST processor");
- else if (m_lpECB->cbTotalBytes != lpECB->cbAvailable) {
- string cgistr;
+ throw FatalProfileException("Blocked too-large a submission to profile endpoint.");
+ else if (m_lpECB->cbTotalBytes > m_lpECB->cbAvailable) {
+ string cgistr(reinterpret_cast<char*>(m_lpECB->lpbData),m_lpECB->cbAvailable);
char buf[8192];
- DWORD datalen=m_lpECB->cbTotalBytes;
+ DWORD datalen=m_lpECB->cbTotalBytes - m_lpECB->cbAvailable;
while (datalen) {
- DWORD buflen=8192;
- BOOL ret = m_lpECB->ReadClient(m_lpECB->ConnID, buf, &buflen);
- if (!ret || !buflen)
- throw ShibTargetException(SHIBRPC_OK,
- "error reading POST data from browser");
- cgistr.append(buf, buflen);
- datalen-=buflen;
+ DWORD buflen=8192;
+ BOOL ret = m_lpECB->ReadClient(m_lpECB->ConnID, buf, &buflen);
+ if (!ret || !buflen)
+ throw FatalProfileException("Error reading profile submission from browser.");
+ cgistr.append(buf, buflen);
+ datalen-=buflen;
}
return cgistr;
}
- else
+ else {
return string(reinterpret_cast<char*>(m_lpECB->lpbData),m_lpECB->cbAvailable);
+ }
}
- // Not used in the Extension
- //virtual void clearHeader(const string &name) { }
- //virtual void setHeader(const string &name, const string &value) { }
- //virtual string getHeader(const string &name) { }
- //virtual void setRemoteUser(const string &user) { }
- //virtual string getRemoteUser(void) { }
- virtual void* sendPage(const string &msg, const string content_type,
- const pair<string, string> headers[], int code) {
- string hdr = string ("Connection: close\r\nContent-type: ") + content_type + "\r\n";
+ virtual void* sendPage(
+ const string &msg,
+ int code=200,
+ const string& content_type="text/html",
+ const Iterator<header_t>& headers=EMPTY(header_t)) {
+ checkString(content_type, "Detected control character in a response header.");
+ string hdr = m_cookie + "Connection: close\r\nContent-type: " + content_type + "\r\n";
for (int k = 0; k < headers.size(); k++) {
+ checkString(headers[k].first, "Detected control character in a response header.");
+ checkString(headers[k].second, "Detected control character in a response header.");
hdr += headers[k].first + ": " + headers[k].second + "\r\n";
}
hdr += "\r\n";
- // XXX Need to handle "code"
- m_lpECB->ServerSupportFunction(m_lpECB->ConnID, HSE_REQ_SEND_RESPONSE_HEADER,
- "200 OK", (LPDWORD)hdr.c_str());
+ const char* codestr="200 OK";
+ switch (code) {
+ case 403: codestr="403 Forbidden"; break;
+ case 404: codestr="404 Not Found"; break;
+ case 500: codestr="500 Server Error"; break;
+ }
+ m_lpECB->ServerSupportFunction(m_lpECB->ConnID, HSE_REQ_SEND_RESPONSE_HEADER, (void*)codestr, 0, (LPDWORD)hdr.c_str());
DWORD resplen = msg.size();
m_lpECB->WriteClient(m_lpECB->ConnID, (LPVOID)msg.c_str(), &resplen, HSE_IO_SYNC);
return (void*)HSE_STATUS_SUCCESS;
}
- virtual void* sendRedirect(const string url) {
+ virtual void* sendRedirect(const string& url) {
// XXX: Don't support the httpRedirect option, yet.
+ checkString(url, "Detected control character in an attempted redirect.");
+ if (g_allowedSchemes.find(url.substr(0, url.find(':'))) == g_allowedSchemes.end())
+ throw FatalProfileException("Invalid scheme in attempted redirect.");
string hdrs = m_cookie + "Location: " + url + "\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 40\r\n"
return (void*)HSE_STATUS_SUCCESS;
}
// Decline happens in the POST processor if this isn't the shire url
- // Note that it can also happen with HTAccess, but we don't suppor that, yet.
+ // Note that it can also happen with HTAccess, but we don't support that, yet.
virtual void* returnDecline(void) {
return (void*)
- WriteClientError(m_lpECB, "UISAPA extension can only be unvoked to process incoming sessions."
+ WriteClientError(m_lpECB, "ISAPI extension can only be invoked to process Shibboleth protocol requests."
"Make sure the mapped file extension doesn't match actual content.");
}
virtual void* returnOK(void) { return (void*) HSE_STATUS_SUCCESS; }
- LPEXTENSION_CONTROL_BLOCK m_lpECB;
- string m_cookie;
+ // Not used in the extension.
+ virtual void clearHeader(const string &name) { throw runtime_error("clearHeader not implemented"); }
+ virtual void setHeader(const string &name, const string &value) { throw runtime_error("setHeader not implemented"); }
+ virtual string getHeader(const string &name) { throw runtime_error("getHeader not implemented"); }
+ virtual void setRemoteUser(const string &user) { throw runtime_error("setRemoteUser not implemented"); }
+ virtual string getRemoteUser(void) { throw runtime_error("getRemoteUser not implemented"); }
};
-IRequestMapper::Settings map_request(
- LPEXTENSION_CONTROL_BLOCK lpECB, IRequestMapper* mapper, const site_t& site, string& target
- )
-{
- dynabuf ssl(5);
- GetServerVariable(lpECB,"HTTPS",ssl,5);
- bool SSL=(ssl=="on" || ssl=="ON");
-
- // URL path always come from IIS.
- dynabuf url(256);
- GetServerVariable(lpECB,"URL",url,255);
-
- // Port may come from IIS or from site def.
- dynabuf port(11);
- if (site.m_port.empty() || !g_bNormalizeRequest)
- GetServerVariable(lpECB,"SERVER_PORT",port,10);
- else {
- strncpy(port,site.m_port.c_str(),10);
- static_cast<char*>(port)[10]=0;
- }
-
- // Scheme may come from site def or be derived from IIS.
- const char* scheme=site.m_scheme.c_str();
- if (!scheme || !*scheme || !g_bNormalizeRequest) {
- scheme = SSL ? "https" : "http";
- }
-
- // Start with scheme and hostname.
- if (g_bNormalizeRequest) {
- target = string(scheme) + "://" + site.m_name;
- }
- else {
- dynabuf name(64);
- GetServerVariable(lpECB,"SERVER_NAME",name,64);
- target = string(scheme) + "://" + static_cast<char*>(name);
- }
-
- // If port is non-default, append it.
- if ((!strcmp(scheme,"http") && port!="80") || (!strcmp(scheme,"https") && port!="443"))
- target = target + ':' + static_cast<char*>(port);
-
- // Append path.
- if (!url.empty())
- target+=static_cast<char*>(url);
-
- return mapper->getSettingsFromParsedURL(scheme,site.m_name.c_str(),strtoul(port,NULL,10),url);
-}
-
-DWORD WriteClientError(LPEXTENSION_CONTROL_BLOCK lpECB, const char* msg)
-{
- LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL, msg);
- static const char* ctype="Connection: close\r\nContent-Type: text/html\r\n\r\n";
- lpECB->ServerSupportFunction(lpECB->ConnID,HSE_REQ_SEND_RESPONSE_HEADER,"200 OK",0,(LPDWORD)ctype);
- static const char* xmsg="<HTML><HEAD><TITLE>Shibboleth Error</TITLE></HEAD><BODY><H1>Shibboleth Error</H1>";
- DWORD resplen=strlen(xmsg);
- lpECB->WriteClient(lpECB->ConnID,(LPVOID)xmsg,&resplen,HSE_IO_SYNC);
- resplen=strlen(msg);
- lpECB->WriteClient(lpECB->ConnID,(LPVOID)msg,&resplen,HSE_IO_SYNC);
- static const char* xmsg2="</BODY></HTML>";
- resplen=strlen(xmsg2);
- lpECB->WriteClient(lpECB->ConnID,(LPVOID)xmsg2,&resplen,HSE_IO_SYNC);
- return HSE_STATUS_SUCCESS;
-}
-
-DWORD WriteClientError(LPEXTENSION_CONTROL_BLOCK lpECB, const IApplication* app, const char* page, ShibMLP& mlp)
-{
- const IPropertySet* props=app->getPropertySet("Errors");
- if (props) {
- pair<bool,const char*> p=props->getString(page);
- if (p.first) {
- ifstream infile(p.second);
- if (!infile.fail()) {
- const char* res = mlp.run(infile,props);
- if (res) {
- static const char* ctype="Connection: close\r\nContent-Type: text/html\r\n\r\n";
- lpECB->ServerSupportFunction(lpECB->ConnID,HSE_REQ_SEND_RESPONSE_HEADER,"200 OK",0,(LPDWORD)ctype);
- DWORD resplen=strlen(res);
- lpECB->WriteClient(lpECB->ConnID,(LPVOID)res,&resplen,0);
- return HSE_STATUS_SUCCESS;
- }
- }
- }
- }
- LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL, "Extension unable to open error template.");
- return WriteClientError(lpECB,"Unable to open error template, check settings.");
-}
-
-DWORD WriteRedirectPage(LPEXTENSION_CONTROL_BLOCK lpECB, const IApplication* app, const char* file, ShibMLP& mlp, const char* headers=NULL)
-{
- ifstream infile(file);
- if (!infile.fail()) {
- const char* res = mlp.run(infile,app->getPropertySet("Errors"));
- if (res) {
- char buf[255];
- sprintf(buf,"Content-Length: %u\r\nContent-Type: text/html\r\n\r\n",strlen(res));
- if (headers) {
- string h(headers);
- h+=buf;
- lpECB->ServerSupportFunction(lpECB->ConnID,HSE_REQ_SEND_RESPONSE_HEADER,"200 OK",0,(LPDWORD)h.c_str());
- }
- else
- lpECB->ServerSupportFunction(lpECB->ConnID,HSE_REQ_SEND_RESPONSE_HEADER,"200 OK",0,(LPDWORD)buf);
- DWORD resplen=strlen(res);
- lpECB->WriteClient(lpECB->ConnID,(LPVOID)res,&resplen,0);
- return HSE_STATUS_SUCCESS;
- }
- }
- LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL, "Extension unable to open redirect template.");
- return WriteClientError(lpECB,"Unable to open redirect template, check settings.");
-}
-
extern "C" DWORD WINAPI HttpExtensionProc(LPEXTENSION_CONTROL_BLOCK lpECB)
{
- string targeturl;
- const IApplication* application=NULL;
- try
- {
+ try {
ostringstream threadid;
- threadid << "[" << getpid() << "] shire_handler" << '\0';
+ threadid << "[" << getpid() << "] isapi_shib_extension" << '\0';
saml::NDC ndc(threadid.str().c_str());
// Determine web site number. This can't really fail, I don't think.
// Match site instance to host name, skip if no match.
map<string,site_t>::const_iterator map_i=g_Sites.find(static_cast<char*>(buf));
if (map_i==g_Sites.end())
- return WriteClientError(lpECB,"Shibboleth filter not configured for this web site.");
-
- // We lock the configuration system for the duration.
- IConfig* conf=g_Config->getINI();
- Locker locker(conf);
-
- // Map request to application and content settings.
- IRequestMapper* mapper=conf->getRequestMapper();
- Locker locker2(mapper);
- IRequestMapper::Settings settings=map_request(lpECB,mapper,map_i->second,targeturl);
- pair<bool,const char*> application_id=settings.first->getString("applicationId");
- application=conf->getApplication(application_id.second);
- const IPropertySet* sessionProps=application ? application->getPropertySet("Sessions") : NULL;
- if (!application || !sessionProps)
- return WriteClientError(lpECB,"Unable to map request to application session settings, check configuration.");
-
- SHIRE shire(application);
-
- const char* shireURL=shire.getShireURL(targeturl.c_str());
- if (!shireURL)
- return WriteClientError(lpECB,"Unable to map request to proper shireURL setting, check configuration.");
-
- // Make sure we only process the SHIRE requests.
- if (!strstr(targeturl.c_str(),shireURL))
- return WriteClientError(lpECB,"ISAPI extension can only be invoked to process incoming sessions."
- "Make sure the mapped file extension doesn't match actual content.");
-
- pair<const char*,const char*> shib_cookie=shire.getCookieNameProps();
-
- // Make sure this is SSL, if it should be
- pair<bool,bool> shireSSL=sessionProps->getBool("shireSSL");
- if (!shireSSL.first || shireSSL.second) {
- GetServerVariable(lpECB,"HTTPS",buf,10);
- if (buf!="on")
- throw ShibTargetException(SHIBRPC_OK,"blocked non-SSL access to SHIRE POST processor");
- }
-
- pair<bool,bool> httpRedirects=sessionProps->getBool("httpRedirects");
- pair<bool,const char*> redirectPage=sessionProps->getString("redirectPage");
- if (httpRedirects.first && !httpRedirects.second && !redirectPage.first)
- return WriteClientError(lpECB,"HTML-based redirection requires a redirectPage property.");
-
- // Check for Mac web browser
- /*
- bool bSafari=false;
- dynabuf agent(64);
- GetServerVariable(lpECB,"HTTP_USER_AGENT",agent,64);
- if (strstr(agent,"AppleWebKit/"))
- bSafari=true;
- */
-
- // If this is a GET, we manufacture an AuthnRequest.
- if (!stricmp(lpECB->lpszMethod,"GET")) {
- const char* areq=lpECB->lpszQueryString ? shire.getLazyAuthnRequest(lpECB->lpszQueryString) : NULL;
- if (!areq)
- throw ShibTargetException(SHIBRPC_OK, "malformed arguments to request a new session");
- if (!httpRedirects.first || httpRedirects.second) {
- string hdrs=string("Location: ") + areq + "\r\n"
- "Content-Type: text/html\r\n"
- "Content-Length: 40\r\n"
- "Expires: 01-Jan-1997 12:00:00 GMT\r\n"
- "Cache-Control: private,no-store,no-cache\r\n\r\n";
- lpECB->ServerSupportFunction(lpECB->ConnID,HSE_REQ_SEND_RESPONSE_HEADER,"302 Moved",0,(LPDWORD)hdrs.c_str());
- static const char* redmsg="<HTML><BODY>Redirecting...</BODY></HTML>";
- DWORD resplen=40;
- lpECB->WriteClient(lpECB->ConnID,(LPVOID)redmsg,&resplen,HSE_IO_SYNC);
- return HSE_STATUS_SUCCESS;
- }
- else {
- ShibMLP markupProcessor;
- markupProcessor.insert("requestURL",areq);
- return WriteRedirectPage(lpECB, application, redirectPage.second, markupProcessor);
- }
- }
- else if (stricmp(lpECB->lpszMethod,"POST"))
- throw ShibTargetException(SHIBRPC_OK,"blocked non-POST to SHIRE POST processor");
-
- // Sure sure this POST is an appropriate content type
- if (!lpECB->lpszContentType || stricmp(lpECB->lpszContentType,"application/x-www-form-urlencoded"))
- throw ShibTargetException(SHIBRPC_OK,"blocked bad content-type to SHIRE POST processor");
-
- // Read the data.
- pair<const char*,const char*> elements=pair<const char*,const char*>(NULL,NULL);
- if (lpECB->cbTotalBytes > 1024*1024) // 1MB?
- throw ShibTargetException(SHIBRPC_OK,"blocked too-large a post to SHIRE POST processor");
- else if (lpECB->cbTotalBytes!=lpECB->cbAvailable) {
- string cgistr;
- char buf[8192];
- DWORD datalen=lpECB->cbTotalBytes;
- while (datalen) {
- DWORD buflen=8192;
- BOOL ret=lpECB->ReadClient(lpECB->ConnID,buf,&buflen);
- if (!ret || !buflen)
- throw ShibTargetException(SHIBRPC_OK,"error reading POST data from browser");
- cgistr.append(buf,buflen);
- datalen-=buflen;
- }
- elements=shire.getFormSubmission(cgistr.c_str(),cgistr.length());
- }
+ return WriteClientError(lpECB, "Shibboleth Extension not configured for this web site.");
+
+ ShibTargetIsapiE ste(lpECB, map_i->second);
+ pair<bool,void*> res = ste.doHandler();
+ if (res.first) return (DWORD)res.second;
+
+ return WriteClientError(lpECB, "Shibboleth Extension failed to process request");
+
+ }
+ catch(bad_alloc) {
+ return WriteClientError(lpECB,"Out of Memory");
+ }
+ catch(long e) {
+ if (e==ERROR_NO_DATA)
+ return WriteClientError(lpECB,"A required variable or header was empty.");
else
- elements=shire.getFormSubmission(reinterpret_cast<char*>(lpECB->lpbData),lpECB->cbAvailable);
-
- // Make sure the SAML Response parameter exists
- if (!elements.first || !*elements.first)
- throw ShibTargetException(SHIBRPC_OK, "SHIRE POST failed to find SAMLResponse form element");
-
- // Make sure the target parameter exists
- if (!elements.second || !*elements.second)
- throw ShibTargetException(SHIBRPC_OK, "SHIRE POST failed to find TARGET form element");
-
- GetServerVariable(lpECB,"REMOTE_ADDR",buf,16);
-
- // Process the post.
- string cookie;
- RPCError* status=NULL;
- ShibMLP markupProcessor;
- markupProcessor.insert("requestURL", targeturl.c_str());
- try {
- status = shire.sessionCreate(elements.first,buf,cookie);
- }
- catch (ShibTargetException &e) {
- markupProcessor.insert("errorType", "Session Creation Service Error");
- markupProcessor.insert("errorText", e.what());
- markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
- return WriteClientError(lpECB, application, "shire", markupProcessor);
- }
-#ifndef _DEBUG
- catch (...) {
- markupProcessor.insert("errorType", "Session Creation Service Error");
- markupProcessor.insert("errorText", "Unexpected Exception");
- markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
- return WriteClientError(lpECB, application, "shire", markupProcessor);
- }
-#endif
-
- if (status->isError()) {
- if (status->isRetryable()) {
- delete status;
- const char* loc=shire.getAuthnRequest(elements.second);
- if (!httpRedirects.first || httpRedirects.second) {
- string hdrs=string("Location: ") + loc + "\r\n"
- "Content-Type: text/html\r\n"
- "Content-Length: 40\r\n"
- "Expires: 01-Jan-1997 12:00:00 GMT\r\n"
- "Cache-Control: private,no-store,no-cache\r\n\r\n";
- lpECB->ServerSupportFunction(lpECB->ConnID,HSE_REQ_SEND_RESPONSE_HEADER,"302 Moved",0,(LPDWORD)hdrs.c_str());
- static const char* redmsg="<HTML><BODY>Redirecting...</BODY></HTML>";
- DWORD resplen=40;
- lpECB->WriteClient(lpECB->ConnID,(LPVOID)redmsg,&resplen,HSE_IO_SYNC);
- return HSE_STATUS_SUCCESS;
- }
- else {
- markupProcessor.insert("requestURL",loc);
- return WriteRedirectPage(lpECB, application, redirectPage.second, markupProcessor);
- }
- }
-
- // Return this error to the user.
- markupProcessor.insert(*status);
- delete status;
- return WriteClientError(lpECB,application,"shire",markupProcessor);
- }
- delete status;
-
- // We've got a good session, set the cookie and redirect to target.
- cookie = string("Set-Cookie: ") + shib_cookie.first + '=' + cookie + shib_cookie.second + "\r\n"
- "Expires: 01-Jan-1997 12:00:00 GMT\r\n"
- "Cache-Control: private,no-store,no-cache\r\n";
- if (!httpRedirects.first || httpRedirects.second) {
- cookie=cookie + "Content-Type: text/html\r\nLocation: " + elements.second + "\r\nContent-Length: 40\r\n\r\n";
- lpECB->ServerSupportFunction(lpECB->ConnID,HSE_REQ_SEND_RESPONSE_HEADER,"302 Moved",0,(LPDWORD)cookie.c_str());
- static const char* redmsg="<HTML><BODY>Redirecting...</BODY></HTML>";
- DWORD resplen=40;
- lpECB->WriteClient(lpECB->ConnID,(LPVOID)redmsg,&resplen,HSE_IO_SYNC);
- return HSE_STATUS_SUCCESS;
- }
- else {
- markupProcessor.insert("requestURL",elements.second);
- return WriteRedirectPage(lpECB, application, redirectPage.second, markupProcessor, cookie.c_str());
- }
+ return WriteClientError(lpECB,"Server detected unexpected IIS error.");
}
- catch (ShibTargetException &e) {
- if (application) {
- ShibMLP markupProcessor;
- markupProcessor.insert("requestURL", targeturl.c_str());
- markupProcessor.insert("errorType", "Session Creation Service Error");
- markupProcessor.insert("errorText", e.what());
- markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
- return WriteClientError(lpECB,application,"shire",markupProcessor);
- }
+ catch (exception& e) {
+ LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL, e.what());
+ return WriteClientError(lpECB,"Shibboleth Extension caught an exception, check Event Log for details.");
}
-#ifndef _DEBUG
- catch (...) {
- if (application) {
- ShibMLP markupProcessor;
- markupProcessor.insert("requestURL", targeturl.c_str());
- markupProcessor.insert("errorType", "Session Creation Service Error");
- markupProcessor.insert("errorText", "Unexpected Exception");
- markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
- return WriteClientError(lpECB,application,"shire",markupProcessor);
- }
+ catch(...) {
+ if (g_catchAll)
+ return WriteClientError(lpECB,"Shibboleth Extension caught an unknown exception.");
+ throw;
}
-#endif
-
+
+ // If we get here we've got an error.
return HSE_STATUS_ERROR;
}
projects / shibboleth / cpp-sp.git / blobdiff