* Shibboleth ISAPI filter
*/
+#define SHIBSP_LITE
#include "config_win32.h"
#define _CRT_NONSTDC_NO_DEPRECATE 1
#include <xmltooling/unicode.h>
#include <xmltooling/XMLToolingConfig.h>
#include <xmltooling/util/NDC.h>
+#include <xmltooling/util/XMLConstants.h>
#include <xmltooling/util/XMLHelper.h>
+#include <xercesc/util/Base64.hpp>
#include <xercesc/util/XMLUniDefs.hpp>
#include <set>
#include <fstream>
#include <process.h>
+#include <windows.h>
#include <httpfilt.h>
#include <httpext.h>
// globals
namespace {
static const XMLCh path[] = UNICODE_LITERAL_4(p,a,t,h);
- static const XMLCh validate[] = UNICODE_LITERAL_8(v,a,l,i,d,a,t,e);
+ static const XMLCh validate[] = UNICODE_LITERAL_8(v,a,l,i,d,a,t,e);
static const XMLCh name[] = UNICODE_LITERAL_4(n,a,m,e);
static const XMLCh port[] = UNICODE_LITERAL_4(p,o,r,t);
static const XMLCh sslport[] = UNICODE_LITERAL_7(s,s,l,p,o,r,t);
static const XMLCh scheme[] = UNICODE_LITERAL_6(s,c,h,e,m,e);
static const XMLCh id[] = UNICODE_LITERAL_2(i,d);
- static const XMLCh Implementation[] = UNICODE_LITERAL_14(I,m,p,l,e,m,e,n,t,a,t,i,o,n);
static const XMLCh ISAPI[] = UNICODE_LITERAL_5(I,S,A,P,I);
static const XMLCh Alias[] = UNICODE_LITERAL_5(A,l,i,a,s);
static const XMLCh normalizeRequest[] = UNICODE_LITERAL_16(n,o,r,m,a,l,i,z,e,R,e,q,u,e,s,t);
string m_scheme,m_port,m_sslport,m_name;
set<string> m_aliases;
};
+
+ struct context_t {
+ char* m_user;
+ bool m_checked;
+ };
HINSTANCE g_hinstDLL;
SPConfig* g_Config = NULL;
map<string,site_t> g_Sites;
bool g_bNormalizeRequest = true;
+ string g_unsetHeaderValue;
+ bool g_checkSpoofing = true;
+ bool g_catchAll = false;
+ vector<string> g_NoCerts;
}
BOOL LogEvent(
return TRUE;
}
- LPCSTR schemadir=getenv("SHIBSCHEMAS");
- if (!schemadir)
- schemadir=SHIBSP_SCHEMAS;
- LPCSTR config=getenv("SHIBCONFIG");
- if (!config)
- config=SHIBSP_CONFIG;
g_Config=&SPConfig::getConfig();
g_Config->setFeatures(
SPConfig::Listener |
- SPConfig::Metadata |
+ SPConfig::Caching |
SPConfig::RequestMapping |
SPConfig::InProcess |
- SPConfig::Logging
+ SPConfig::Logging |
+ SPConfig::Handlers
);
- if (!g_Config->init(schemadir)) {
+ if (!g_Config->init()) {
g_Config=NULL;
LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL,
"Filter startup failed during library initialization, check native log for help.");
return FALSE;
}
+ LPCSTR config=getenv("SHIBSP_CONFIG");
+ if (!config)
+ config=SHIBSP_CONFIG;
+
try {
DOMDocument* dummydoc=XMLToolingConfig::getConfig().getParser().newDocument();
XercesJanitor<DOMDocument> docjanitor(dummydoc);
return FALSE;
}
- // Access the implementation-specifics for site mappings.
+ // Access implementation-specifics and site mappings.
ServiceProvider* sp=g_Config->getServiceProvider();
- xmltooling::Locker locker(sp);
- const PropertySet* props=sp->getPropertySet("Local");
+ Locker locker(sp);
+ const PropertySet* props=sp->getPropertySet("InProcess");
if (props) {
- const DOMElement* impl=XMLHelper::getFirstChildElement(props->getElement(),Implementation);
- if (impl && (impl=XMLHelper::getFirstChildElement(impl,ISAPI))) {
- const XMLCh* flag=impl->getAttributeNS(NULL,normalizeRequest);
- g_bNormalizeRequest=(!flag || !*flag || *flag==chDigit_1 || *flag==chLatin_t);
- impl=XMLHelper::getFirstChildElement(impl,Site);
- while (impl) {
- auto_ptr_char id(impl->getAttributeNS(NULL,id));
+ pair<bool,const char*> unsetValue=props->getString("unsetHeaderValue");
+ if (unsetValue.first)
+ g_unsetHeaderValue = unsetValue.second;
+ pair<bool,bool> flag=props->getBool("checkSpoofing");
+ g_checkSpoofing = !flag.first || flag.second;
+ flag=props->getBool("catchAll");
+ g_catchAll = flag.first && flag.second;
+
+ props = props->getPropertySet("ISAPI");
+ if (props) {
+ flag = props->getBool("normalizeRequest");
+ g_bNormalizeRequest = !flag.first || flag.second;
+ const DOMElement* child = XMLHelper::getFirstChildElement(props->getElement(),Site);
+ while (child) {
+ auto_ptr_char id(child->getAttributeNS(NULL,id));
if (id.get())
- g_Sites.insert(pair<string,site_t>(id.get(),site_t(impl)));
- impl=XMLHelper::getNextSiblingElement(impl,Site);
+ g_Sites.insert(pair<string,site_t>(id.get(),site_t(child)));
+ child=XMLHelper::getNextSiblingElement(child,Site);
}
}
}
{
PHTTP_FILTER_CONTEXT m_pfc;
PHTTP_FILTER_PREPROC_HEADERS m_pn;
- map<string,string> m_headers;
- vector<XSECCryptoX509*> m_certs;
+ multimap<string,string> m_headers;
int m_port;
- string m_scheme,m_hostname,m_uri;
+ string m_scheme,m_hostname;
mutable string m_remote_addr,m_content_type,m_method;
+ dynabuf m_allhttp;
public:
- ShibTargetIsapiF(PHTTP_FILTER_CONTEXT pfc, PHTTP_FILTER_PREPROC_HEADERS pn, const site_t& site) {
-
- m_pfc = pfc;
- m_pn = pn;
+ ShibTargetIsapiF(PHTTP_FILTER_CONTEXT pfc, PHTTP_FILTER_PREPROC_HEADERS pn, const site_t& site)
+ : AbstractSPRequest(SHIBSP_LOGCAT".ISAPI"), m_pfc(pfc), m_pn(pn), m_allhttp(4096) {
// URL path always come from IIS.
dynabuf var(256);
GetHeader(pn,pfc,"url",var,256,false);
- m_uri = var;
+ setRequestURI(var);
// Port may come from IIS or from site def.
if (!g_bNormalizeRequest || (pfc->fIsSecurePort && site.m_sslport.empty()) || (!pfc->fIsSecurePort && site.m_port.empty())) {
m_hostname = var;
if (site.m_name!=m_hostname && site.m_aliases.find(m_hostname)==site.m_aliases.end())
m_hostname=site.m_name;
+
+ if (!pfc->pFilterContext) {
+ pfc->pFilterContext = pfc->AllocMem(pfc, sizeof(context_t), NULL);
+ if (static_cast<context_t*>(pfc->pFilterContext)) {
+ static_cast<context_t*>(pfc->pFilterContext)->m_user = NULL;
+ static_cast<context_t*>(pfc->pFilterContext)->m_checked = false;
+ }
+ }
}
~ShibTargetIsapiF() { }
int getPort() const {
return m_port;
}
- const char* getRequestURI() const {
- return m_uri.c_str();
- }
const char* getMethod() const {
if (m_method.empty()) {
dynabuf var(5);
if (level >= SPError)
LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL, msg.c_str());
}
- void clearHeader(const char* name) {
- string hdr(!strcmp(name,"REMOTE_USER") ? "remote-user" : name);
+ void clearHeader(const char* rawname, const char* cginame) {
+ if (g_checkSpoofing && m_pfc->pFilterContext && !static_cast<context_t*>(m_pfc->pFilterContext)->m_checked) {
+ if (m_allhttp.empty())
+ GetServerVariable(m_pfc,"ALL_HTTP",m_allhttp,4096);
+ if (strstr(m_allhttp, cginame))
+ throw opensaml::SecurityPolicyException("Attempt to spoof header ($1) was detected.", params(1, rawname));
+ }
+ string hdr(!strcmp(rawname,"REMOTE_USER") ? "remote-user" : rawname);
hdr += ':';
- m_pn->SetHeader(m_pfc, const_cast<char*>(hdr.c_str()), "");
+ m_pn->SetHeader(m_pfc, const_cast<char*>(hdr.c_str()), const_cast<char*>(g_unsetHeaderValue.c_str()));
}
void setHeader(const char* name, const char* value) {
string hdr(name);
string getHeader(const char* name) const {
string hdr(name);
hdr += ':';
- dynabuf buf(1024);
- GetHeader(m_pn, m_pfc, const_cast<char*>(hdr.c_str()), buf, 1024, false);
+ dynabuf buf(256);
+ GetHeader(m_pn, m_pfc, const_cast<char*>(hdr.c_str()), buf, 256, false);
return string(buf);
}
void setRemoteUser(const char* user) {
setHeader("remote-user", user);
+ if (m_pfc->pFilterContext) {
+ if (!user || !*user)
+ static_cast<context_t*>(m_pfc->pFilterContext)->m_user = NULL;
+ else if (static_cast<context_t*>(m_pfc->pFilterContext)->m_user = (char*)m_pfc->AllocMem(m_pfc, sizeof(char) * (strlen(user) + 1), NULL))
+ strcpy(static_cast<context_t*>(m_pfc->pFilterContext)->m_user, user);
+ }
}
string getRemoteUser() const {
return getHeader("remote-user");
void setResponseHeader(const char* name, const char* value) {
// Set for later.
if (value)
- m_headers[name] = value;
+ m_headers.insert(make_pair(name,value));
else
m_headers.erase(name);
}
long sendResponse(istream& in, long status) {
string hdr = string("Connection: close\r\n");
- for (map<string,string>::const_iterator i=m_headers.begin(); i!=m_headers.end(); ++i)
+ for (multimap<string,string>::const_iterator i=m_headers.begin(); i!=m_headers.end(); ++i)
hdr += i->first + ": " + i->second + "\r\n";
hdr += "\r\n";
const char* codestr="200 OK";
switch (status) {
- case SAML_HTTP_STATUS_FORBIDDEN:codestr="403 Forbidden"; break;
- case SAML_HTTP_STATUS_NOTFOUND: codestr="404 Not Found"; break;
- case SAML_HTTP_STATUS_ERROR: codestr="500 Server Error"; break;
+ case XMLTOOLING_HTTP_STATUS_UNAUTHORIZED: codestr="401 Authorization Required"; break;
+ case XMLTOOLING_HTTP_STATUS_FORBIDDEN: codestr="403 Forbidden"; break;
+ case XMLTOOLING_HTTP_STATUS_NOTFOUND: codestr="404 Not Found"; break;
+ case XMLTOOLING_HTTP_STATUS_ERROR: codestr="500 Server Error"; break;
}
m_pfc->ServerSupportFunction(m_pfc, SF_REQ_SEND_RESPONSE_HEADER, (void*)codestr, (DWORD)hdr.c_str(), 0);
char buf[1024];
"Content-Length: 40\r\n"
"Expires: 01-Jan-1997 12:00:00 GMT\r\n"
"Cache-Control: private,no-store,no-cache\r\n";
- for (map<string,string>::const_iterator i=m_headers.begin(); i!=m_headers.end(); ++i)
+ for (multimap<string,string>::const_iterator i=m_headers.begin(); i!=m_headers.end(); ++i)
hdr += i->first + ": " + i->second + "\r\n";
hdr += "\r\n";
m_pfc->ServerSupportFunction(m_pfc, SF_REQ_SEND_RESPONSE_HEADER, "302 Please Wait", (DWORD)hdr.c_str(), 0);
return SF_STATUS_REQ_NEXT_NOTIFICATION;
}
- const vector<XSECCryptoX509*>& getClientCertificates() const {
- return m_certs;
+ const vector<string>& getClientCertificates() const {
+ return g_NoCerts;
}
// The filter never processes the POST, so stub these methods.
if (notificationType==SF_NOTIFY_LOG)
{
if (pfc->pFilterContext)
- ((PHTTP_FILTER_LOG)pvNotification)->pszClientUserName=static_cast<LPCSTR>(pfc->pFilterContext);
+ ((PHTTP_FILTER_LOG)pvNotification)->pszClientUserName=static_cast<context_t*>(pfc->pFilterContext)->m_user;
return SF_STATUS_REQ_NEXT_NOTIFICATION;
}
// "false" because we don't override the Shib settings
pair<bool,long> res = stf.getServiceProvider().doAuthentication(stf);
+ if (pfc->pFilterContext)
+ static_cast<context_t*>(pfc->pFilterContext)->m_checked = true;
if (res.first) return res.second;
// "false" because we don't override the Shib settings
LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL, e.what());
return WriteClientError(pfc,"Shibboleth Filter caught an exception, check Event Log for details.");
}
-#ifndef _DEBUG
catch(...) {
- return WriteClientError(pfc,"Shibboleth Filter caught an unknown exception.");
+ LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL, "Shibboleth Filter threw an unknown exception.");
+ if (g_catchAll)
+ return WriteClientError(pfc,"Shibboleth Filter threw an unknown exception.");
+ throw;
}
-#endif
return WriteClientError(pfc,"Shibboleth Filter reached unreachable code, save my walrus!");
}
class ShibTargetIsapiE : public AbstractSPRequest
{
LPEXTENSION_CONTROL_BLOCK m_lpECB;
- map<string,string> m_headers;
- vector<XSECCryptoX509*> m_certs;
+ multimap<string,string> m_headers;
+ mutable vector<string> m_certs;
mutable string m_body;
mutable bool m_gotBody;
int m_port;
string m_scheme,m_hostname,m_uri;
- mutable string m_remote_addr;
+ mutable string m_remote_addr,m_remote_user;
public:
- ShibTargetIsapiE(LPEXTENSION_CONTROL_BLOCK lpECB, const site_t& site) : m_lpECB(lpECB), m_gotBody(false) {
+ ShibTargetIsapiE(LPEXTENSION_CONTROL_BLOCK lpECB, const site_t& site)
+ : AbstractSPRequest(SHIBSP_LOGCAT".ISAPI"), m_lpECB(lpECB), m_gotBody(false) {
dynabuf ssl(5);
GetServerVariable(lpECB,"HTTPS",ssl,5);
bool SSL=(ssl=="on" || ssl=="ON");
* PathInfo: /SAML/POST
*/
+ string uri;
+
// 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.
- m_uri = lpECB->lpszPathInfo;
+ uri = lpECB->lpszPathInfo;
else {
- m_uri = url;
- m_uri += lpECB->lpszPathInfo;
+ uri = url;
+ uri += lpECB->lpszPathInfo;
}
}
+ else {
+ uri = url;
+ }
// For consistency with Apache, let's add the query string.
if (lpECB->lpszQueryString && *(lpECB->lpszQueryString)) {
- m_uri += '?';
- m_uri += lpECB->lpszQueryString;
+ uri += '?';
+ uri += lpECB->lpszQueryString;
}
+
+ setRequestURI(uri.c_str());
}
~ShibTargetIsapiE() { }
int getPort() const {
return m_port;
}
- const char* getRequestURI() const {
- return m_uri.c_str();
- }
const char* getMethod() const {
return m_lpECB->lpszMethod;
}
long getContentLength() const {
return m_lpECB->cbTotalBytes;
}
+ string getRemoteUser() const {
+ if (m_remote_user.empty()) {
+ dynabuf var(16);
+ GetServerVariable(m_lpECB, "REMOTE_USER", var, 32, false);
+ if (!var.empty())
+ m_remote_user = var;
+ }
+ return m_remote_user;
+ }
string getRemoteAddr() const {
if (m_remote_addr.empty()) {
dynabuf var(16);
}
return m_remote_addr;
}
- void log(SPLogLevel level, const string& msg) {
+ void log(SPLogLevel level, const string& msg) const {
AbstractSPRequest::log(level,msg);
if (level >= SPError)
LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL, msg.c_str());
void setResponseHeader(const char* name, const char* value) {
// Set for later.
if (value)
- m_headers[name] = value;
+ m_headers.insert(make_pair(name,value));
else
m_headers.erase(name);
}
if (m_gotBody)
return m_body.c_str();
if (m_lpECB->cbTotalBytes > 1024*1024) // 1MB?
- throw opensaml::BindingException("Size of POST request body exceeded limit.");
- else if (m_lpECB->cbTotalBytes != m_lpECB->cbAvailable) {
+ throw opensaml::SecurityPolicyException("Size of request body exceeded 1M size limit.");
+ else if (m_lpECB->cbTotalBytes > m_lpECB->cbAvailable) {
m_gotBody=true;
char buf[8192];
DWORD datalen=m_lpECB->cbTotalBytes;
DWORD buflen=8192;
BOOL ret = m_lpECB->ReadClient(m_lpECB->ConnID, buf, &buflen);
if (!ret || !buflen)
- throw IOException("Error reading POST request body from browser.");
+ throw IOException("Error reading request body from browser.");
m_body.append(buf, buflen);
datalen-=buflen;
}
}
- else {
+ else if (m_lpECB->cbAvailable) {
m_gotBody=true;
m_body.assign(reinterpret_cast<char*>(m_lpECB->lpbData),m_lpECB->cbAvailable);
}
}
long sendResponse(istream& in, long status) {
string hdr = string("Connection: close\r\n");
- for (map<string,string>::const_iterator i=m_headers.begin(); i!=m_headers.end(); ++i)
+ for (multimap<string,string>::const_iterator i=m_headers.begin(); i!=m_headers.end(); ++i)
hdr += i->first + ": " + i->second + "\r\n";
hdr += "\r\n";
const char* codestr="200 OK";
switch (status) {
- case SAML_HTTP_STATUS_FORBIDDEN:codestr="403 Forbidden"; break;
- case SAML_HTTP_STATUS_NOTFOUND: codestr="404 Not Found"; break;
- case SAML_HTTP_STATUS_ERROR: codestr="500 Server Error"; break;
+ case XMLTOOLING_HTTP_STATUS_UNAUTHORIZED: codestr="401 Authorization Required"; break;
+ case XMLTOOLING_HTTP_STATUS_FORBIDDEN: codestr="403 Forbidden"; break;
+ case XMLTOOLING_HTTP_STATUS_NOTFOUND: codestr="404 Not Found"; break;
+ case XMLTOOLING_HTTP_STATUS_ERROR: codestr="500 Server Error"; break;
}
m_lpECB->ServerSupportFunction(m_lpECB->ConnID, HSE_REQ_SEND_RESPONSE_HEADER, (void*)codestr, 0, (LPDWORD)hdr.c_str());
char buf[1024];
"Content-Length: 40\r\n"
"Expires: 01-Jan-1997 12:00:00 GMT\r\n"
"Cache-Control: private,no-store,no-cache\r\n";
- for (map<string,string>::const_iterator i=m_headers.begin(); i!=m_headers.end(); ++i)
+ for (multimap<string,string>::const_iterator i=m_headers.begin(); i!=m_headers.end(); ++i)
hdr += i->first + ": " + i->second + "\r\n";
hdr += "\r\n";
m_lpECB->ServerSupportFunction(m_lpECB->ConnID, HSE_REQ_SEND_RESPONSE_HEADER, "302 Moved", 0, (LPDWORD)hdr.c_str());
return HSE_STATUS_SUCCESS;
}
- const vector<XSECCryptoX509*>& getClientCertificates() const {
+ const vector<string>& getClientCertificates() const {
+ if (m_certs.empty()) {
+ char CertificateBuf[8192];
+ CERT_CONTEXT_EX ccex;
+ ccex.cbAllocated = sizeof(CertificateBuf);
+ ccex.CertContext.pbCertEncoded = (BYTE*)CertificateBuf;
+ DWORD dwSize = sizeof(ccex);
+
+ if (m_lpECB->ServerSupportFunction(m_lpECB->ConnID, HSE_REQ_GET_CERT_INFO_EX, (LPVOID)&ccex, (LPDWORD)dwSize, NULL)) {
+ if (ccex.CertContext.cbCertEncoded) {
+ unsigned int outlen;
+ XMLByte* serialized = Base64::encode(reinterpret_cast<XMLByte*>(CertificateBuf), ccex.CertContext.cbCertEncoded, &outlen);
+ m_certs.push_back(reinterpret_cast<char*>(serialized));
+ XMLString::release(&serialized);
+ }
+ }
+ }
return m_certs;
}
// Not used in the extension.
- virtual void clearHeader(const char* name) { throw runtime_error("clearHeader not implemented"); }
- virtual void setHeader(const char* name, const char* value) { throw runtime_error("setHeader not implemented"); }
- virtual void setRemoteUser(const char* user) { throw runtime_error("setRemoteUser not implemented"); }
- virtual string getRemoteUser() const { throw runtime_error("getRemoteUser not implemented"); }
+ void clearHeader(const char* rawname, const char* cginame) { throw runtime_error("clearHeader not implemented"); }
+ void setHeader(const char* name, const char* value) { throw runtime_error("setHeader not implemented"); }
+ void setRemoteUser(const char* user) { throw runtime_error("setRemoteUser not implemented"); }
};
extern "C" DWORD WINAPI HttpExtensionProc(LPEXTENSION_CONTROL_BLOCK lpECB)
// 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 Extension not configured for this web site.");
+ return WriteClientError(lpECB, "Shibboleth Extension not configured for web site (check <ISAPI> mappings in configuration).");
ShibTargetIsapiE ste(lpECB, map_i->second);
pair<bool,long> res = ste.getServiceProvider().doHandler(ste);
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(...) {
- return WriteClientError(lpECB,"Shibboleth Extension caught an unknown exception.");
+ LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL, "Shibboleth Extension threw an unknown exception.");
+ if (g_catchAll)
+ return WriteClientError(lpECB,"Shibboleth Extension threw an unknown exception.");
+ throw;
}
-#endif
// If we get here we've got an error.
return HSE_STATUS_ERROR;
projects / shibboleth / sp.git / blobdiff