[shibboleth-sp2] 92/100: Recoded all response handling to address browser issues.

Ferenc Wágner wferi-guest at moszumanska.debian.org
Tue Jan 26 21:29:21 UTC 2016


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wferi-guest pushed a commit to annotated tag 1.2.1
in repository shibboleth-sp2.

commit c1efdb9e0342da201d98b52002da42f8329de502
Author: Scott Cantor <cantor.2 at osu.edu>
Date:   Sun Oct 31 00:07:01 2004 +0000

    Recoded all response handling to address browser issues.
---
 isapi_shib/isapi_shib.cpp | 121 +++++++++++++++++++++++++++++++++-------------
 1 file changed, 87 insertions(+), 34 deletions(-)

diff --git a/isapi_shib/isapi_shib.cpp b/isapi_shib/isapi_shib.cpp
index e75f578..d00a1c8 100644
--- a/isapi_shib/isapi_shib.cpp
+++ b/isapi_shib/isapi_shib.cpp
@@ -395,9 +395,8 @@ IRequestMapper::Settings map_request(
 DWORD WriteClientError(PHTTP_FILTER_CONTEXT pfc, const char* msg)
 {
     LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL, msg);
-    static const char* ctype="Content-Type: text/html\r\n";
-    pfc->AddResponseHeaders(pfc,const_cast<char*>(ctype),0);
-    pfc->ServerSupportFunction(pfc,SF_REQ_SEND_RESPONSE_HEADER,"200 OK",0,0);
+    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);
     static const char* xmsg="<HTML><HEAD><TITLE>Shibboleth Filter Error</TITLE></HEAD><BODY>"
                             "<H1>Shibboleth Filter Error</H1>";
     DWORD resplen=strlen(xmsg);
@@ -420,9 +419,8 @@ DWORD WriteClientError(PHTTP_FILTER_CONTEXT pfc, const IApplication* app, const
             if (!infile.fail()) {
                 const char* res = mlp.run(infile,props);
                 if (res) {
-                    static const char* ctype="Content-Type: text/html\r\n";
-                    pfc->AddResponseHeaders(pfc,const_cast<char*>(ctype),0);
-                    pfc->ServerSupportFunction(pfc,SF_REQ_SEND_RESPONSE_HEADER,"200 OK",0,0);
+                    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;
@@ -810,7 +808,7 @@ IRequestMapper::Settings map_request(
 DWORD WriteClientError(LPEXTENSION_CONTROL_BLOCK lpECB, const char* msg)
 {
     LogEvent(NULL, EVENTLOG_ERROR_TYPE, 2100, NULL, msg);
-    static const char* ctype="Content-Type: text/html\r\n";
+    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);
@@ -833,7 +831,7 @@ DWORD WriteClientError(LPEXTENSION_CONTROL_BLOCK lpECB, const IApplication* app,
             if (!infile.fail()) {
                 const char* res = mlp.run(infile,props);
                 if (res) {
-                    static const char* ctype="Content-Type: text/html\r\n";
+                    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);
@@ -846,6 +844,30 @@ DWORD WriteClientError(LPEXTENSION_CONTROL_BLOCK lpECB, const IApplication* app,
     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;
@@ -870,7 +892,6 @@ extern "C" DWORD WINAPI HttpExtensionProc(LPEXTENSION_CONTROL_BLOCK lpECB)
         Locker locker(conf);
         
         // Map request to application and content settings.
-        string targeturl;
         IRequestMapper* mapper=conf->getRequestMapper();
         Locker locker2(mapper);
         IRequestMapper::Settings settings=map_request(lpECB,mapper,map_i->second,targeturl);
@@ -901,24 +922,42 @@ extern "C" DWORD WINAPI HttpExtensionProc(LPEXTENSION_CONTROL_BLOCK lpECB)
                 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");
-            targeturl = string("Location: ") + areq + "\r\n"
-                "Expires: 01-Jan-1997 12:00:00 GMT\r\n"
-                "Cache-Control: private,no-store,no-cache\r\n"
-                "Connection: close\r\n";
-            HSE_SEND_HEADER_EX_INFO hinfo;
-            hinfo.pszStatus="302 Moved";
-            hinfo.pszHeader=targeturl.c_str();
-            hinfo.cchStatus=9;
-            hinfo.cchHeader=targeturl.length();
-            hinfo.fKeepConn=FALSE;
-            if (lpECB->ServerSupportFunction(lpECB->ConnID,HSE_REQ_SEND_RESPONSE_HEADER_EX,&hinfo,0,0))
+            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;
-            return HSE_STATUS_ERROR;
+            }
+            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");
@@ -985,10 +1024,22 @@ extern "C" DWORD WINAPI HttpExtensionProc(LPEXTENSION_CONTROL_BLOCK lpECB)
             if (status->isRetryable()) {
                 delete status;
                 const char* loc=shire.getAuthnRequest(elements.second);
-                DWORD len=strlen(loc);
-                if (lpECB->ServerSupportFunction(lpECB->ConnID,HSE_REQ_SEND_URL_REDIRECT_RESP,(LPVOID)loc,&len,0))
+                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;
-                return HSE_STATUS_ERROR;
+                }
+                else {
+                    markupProcessor.insert("requestURL",loc);
+                    return WriteRedirectPage(lpECB, application, redirectPage.second, markupProcessor);
+                }
             }
     
             // Return this error to the user.
@@ -1000,18 +1051,20 @@ extern "C" DWORD WINAPI HttpExtensionProc(LPEXTENSION_CONTROL_BLOCK lpECB)
     
         // 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"
-            "Location: " + elements.second + "\r\n"
             "Expires: 01-Jan-1997 12:00:00 GMT\r\n"
-            "Cache-Control: private,no-store,no-cache\r\n"
-            "Connection: close\r\n";
-        HSE_SEND_HEADER_EX_INFO hinfo;
-        hinfo.pszStatus="302 Moved";
-        hinfo.pszHeader=cookie.c_str();
-        hinfo.cchStatus=9;
-        hinfo.cchHeader=cookie.length();
-        hinfo.fKeepConn=FALSE;
-        if (lpECB->ServerSupportFunction(lpECB->ConnID,HSE_REQ_SEND_RESPONSE_HEADER_EX,&hinfo,0,0))
+            "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());
+        }
     }
     catch (ShibTargetException &e) {
         if (application) {

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