our current experimental Neutrino branch

git-svn-id: file:///home/bas/coolstream_public_svn/THIRDPARTY/applications/neutrino-experimental@27 e54a6e83-5905-42d5-8d5c-058d10e6a962

src/nhttpd/yhttpd_mods/mod_auth.cpp

@@ -0,0 +1,108 @@
+//=============================================================================
+// YHTTPD
+// TestHook
+//=============================================================================
+
+#include <cstring>
+#include <cstdlib>
+#include "mod_auth.h"
+#include "helper.h"
+
+//-----------------------------------------------------------------------------
+// HOOK: response_hook
+//-----------------------------------------------------------------------------
+THandleStatus CmAuth::Hook_PrepareResponse(CyhookHandler *hh)
+{
+	THandleStatus status = HANDLED_CONTINUE;
+
+	if(authenticate)
+	{
+		if( (hh->UrlData["clientaddr"]).find(IADDR_LOCAL)>0 &&
+		(no_auth_client == "" || 
+		(hh->UrlData["clientaddr"]).find(no_auth_client)>0)) 		// dont check local calls or calls from NoAuthClient
+		{
+			if (!CheckAuth(hh))
+			{
+				hh->SetError(HTTP_UNAUTHORIZED);
+				status = HANDLED_ERROR;
+			}
+		}
+	}
+	return status;
+}
+
+//-----------------------------------------------------------------------------
+// HOOK: webserver_readconfig_hook Handler
+// This hook ist called from ReadConfig
+//-----------------------------------------------------------------------------
+THandleStatus CmAuth::Hook_ReadConfig(CConfigFile *Config, CStringList &ConfigList)
+{
+	username	= Config->getString("mod_auth.username", AUTHUSER);
+	password	= Config->getString("mod_auth.password", AUTHPASSWORD);
+	no_auth_client	= Config->getString("mod_auth.no_auth_client", "");
+	authenticate	= Config->getBool("mod_auth.authenticate", false);
+	ConfigList["mod_auth.username"] = username;
+	ConfigList["mod_auth.password"] = password;
+	ConfigList["mod_auth.no_auth_client"] = no_auth_client;
+	ConfigList["mod_auth.authenticate"] = Config->getString("mod_auth.authenticate", "false");
+	return HANDLED_CONTINUE;
+}
+
+//-----------------------------------------------------------------------------
+// check if given username an pssword are valid
+//-----------------------------------------------------------------------------
+bool CmAuth::CheckAuth(CyhookHandler *hh)
+{
+	if (hh->HeaderList["Authorization"] == "")
+		return false;
+	std::string encodet = hh->HeaderList["Authorization"].substr(6,hh->HeaderList["Authorization"].length() - 6);
+	std::string decodet = decodeBase64(encodet.c_str());
+	int pos = decodet.find_first_of(':');
+	std::string user = decodet.substr(0,pos);
+	std::string passwd = decodet.substr(pos + 1, decodet.length() - pos - 1);
+	return (user.compare(username) == 0 &&
+	        passwd.compare(password) == 0);
+}	
+
+//-----------------------------------------------------------------------------
+// decode Base64 buffer to String
+//-----------------------------------------------------------------------------
+std::string CmAuth::decodeBase64(const char *b64buffer)
+{
+	char *newString, *org_newString; //shorter then b64buffer
+	std::string result;
+	if((newString = (char *)malloc(sizeof(char) * strlen(b64buffer) + 1) ) != NULL)
+	{
+		org_newString = newString;
+		int i = 0;
+		unsigned long c = 0;
+  
+		while (*b64buffer)
+		{
+			int oneChar = *b64buffer++;
+			if(oneChar >= '0' && oneChar <= '9')		oneChar = oneChar - '0' + 52;
+    			else if(oneChar >= 'A' && oneChar <= 'Z')	oneChar = oneChar - 'A';
+    			else if(oneChar >= 'a' && oneChar <= 'z')	oneChar = oneChar - 'a' + 26;
+			else if(oneChar == '+')				oneChar = 62;
+			else if(oneChar == '/')				oneChar = 63;
+			else if(oneChar == '=')				oneChar = 0;
+			else						continue;
+
+			c = (c << 6) | oneChar;
+    			if (++i == 4)
+    			{
+				*newString++ = (char) (c >> 16);
+				*newString++ = (char) (c >> 8);
+				*newString++ = (char) c;
+				i = 0;
+			}
+		}
+		*newString++ = '\0';
+		result = std::string(org_newString);
+		free(org_newString);
+		return result;
+	}
+	else
+		return "";
+}
+