merge from viewer-public

1 files changed, 1612 insertions, 0 deletions

diff --git a/indra/newview/llsechandler_basic.cpp b/indra/newview/llsechandler_basic.cpp
new file mode 100644
index 0000000000..df55ccf142
--- /dev/null
+++ b/indra/newview/llsechandler_basic.cpp
@@ -0,0 +1,1612 @@
+/** 
+ * @file llsechandler_basic.cpp
+ * @brief Security API for services such as certificate handling
+ * secure local storage, etc.
+ *
+ * $LicenseInfo:firstyear=2003&license=viewergpl$
+ * 
+ * Copyright (c) 2003-2000, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlife.com/developers/opensource/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlife.com/developers/opensource/flossexception
+ * 
+LLS * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+
+#include "llviewerprecompiledheaders.h"
+#include "llsecapi.h"
+#include "llsechandler_basic.h"
+#include "llsdserialize.h"
+#include "llviewernetwork.h"
+#include "llxorcipher.h"
+#include "llfile.h"
+#include "lldir.h"
+#include "llviewercontrol.h"
+#include <vector>
+#include <ios>
+#include <openssl/ossl_typ.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+#include <openssl/pem.h>
+#include <openssl/asn1.h>
+#include <openssl/rand.h>
+#include <openssl/err.h>
+#include <iostream>
+#include <iomanip>
+#include <time.h>
+
+
+
+// 128 bits of salt data...
+#define STORE_SALT_SIZE 16 
+#define BUFFER_READ_SIZE 256
+std::string cert_string_from_asn1_string(ASN1_STRING* value);
+std::string cert_string_from_octet_string(ASN1_OCTET_STRING* value);
+
+LLSD _basic_constraints_ext(X509* cert);
+LLSD _key_usage_ext(X509* cert);
+LLSD _ext_key_usage_ext(X509* cert);
+LLSD _subject_key_identifier_ext(X509 *cert);
+LLSD _authority_key_identifier_ext(X509* cert);
+
+LLBasicCertificate::LLBasicCertificate(const std::string& pem_cert) 
+{
+	
+	// BIO_new_mem_buf returns a read only bio, but takes a void* which isn't const
+	// so we need to cast it.
+	BIO * pem_bio = BIO_new_mem_buf((void*)pem_cert.c_str(), pem_cert.length());
+	if(pem_bio == NULL)
+	{
+		LL_WARNS("SECAPI") << "Could not allocate an openssl memory BIO." << LL_ENDL;
+		throw LLInvalidCertificate(this);
+	}
+	mCert = NULL;
+	PEM_read_bio_X509(pem_bio, &mCert, 0, NULL);
+	BIO_free(pem_bio);
+	if (!mCert)
+	{
+		throw LLInvalidCertificate(this);
+	}
+	_initLLSD();
+}
+
+
+LLBasicCertificate::LLBasicCertificate(X509* pCert) 
+{
+	if (!pCert || !pCert->cert_info)
+	{
+		throw LLInvalidCertificate(this);
+	}	
+	mCert = X509_dup(pCert);
+	_initLLSD();
+}
+
+LLBasicCertificate::~LLBasicCertificate() 
+{
+	if(mCert)
+	{
+		X509_free(mCert);
+	}
+}
+
+//
+// retrieve the pem using the openssl functionality
+std::string LLBasicCertificate::getPem() const
+{ 
+	char * pem_bio_chars = NULL;
+	// a BIO is the equivalent of a 'std::stream', and
+	// can be a file, mem stream, whatever.  Grab a memory based
+	// BIO for the result
+	BIO *pem_bio = BIO_new(BIO_s_mem());
+	if (!pem_bio)
+	{
+		LL_WARNS("SECAPI") << "Could not allocate an openssl memory BIO." << LL_ENDL;		
+		return std::string();
+	}
+	PEM_write_bio_X509(pem_bio, mCert);
+	int length = BIO_get_mem_data(pem_bio, &pem_bio_chars);
+	std::string result = std::string(pem_bio_chars, length);
+	BIO_free(pem_bio);
+	return result;
+}
+
+// get the DER encoding for the cert
+// DER is a binary encoding format for certs...
+std::vector<U8> LLBasicCertificate::getBinary() const
+{ 
+	U8 * der_bio_data = NULL;
+	// get a memory bio 
+	BIO *der_bio = BIO_new(BIO_s_mem());
+	if (!der_bio)
+	{
+		LL_WARNS("SECAPI") << "Could not allocate an openssl memory BIO." << LL_ENDL;			
+		return std::vector<U8>();
+	}
+	i2d_X509_bio(der_bio, mCert);
+	int length = BIO_get_mem_data(der_bio, &der_bio_data);
+	std::vector<U8> result(length);
+	// vectors are guranteed to be a contiguous chunk of memory.
+	memcpy(&result[0], der_bio_data,  length);
+	BIO_free(der_bio);
+	return result;
+}
+
+
+LLSD LLBasicCertificate::getLLSD() const
+{
+	return mLLSDInfo;
+}
+
+// Initialize the LLSD info for the certificate
+LLSD& LLBasicCertificate::_initLLSD()
+{ 
+
+	// call the various helpers to build the LLSD
+	mLLSDInfo[CERT_SUBJECT_NAME] = cert_name_from_X509_NAME(X509_get_subject_name(mCert));
+	mLLSDInfo[CERT_ISSUER_NAME] = cert_name_from_X509_NAME(X509_get_issuer_name(mCert));
+	mLLSDInfo[CERT_SUBJECT_NAME_STRING] = cert_string_name_from_X509_NAME(X509_get_subject_name(mCert));
+	mLLSDInfo[CERT_ISSUER_NAME_STRING] = cert_string_name_from_X509_NAME(X509_get_issuer_name(mCert));
+	ASN1_INTEGER *sn = X509_get_serialNumber(mCert);
+	if (sn != NULL)
+	{
+		mLLSDInfo[CERT_SERIAL_NUMBER] = cert_string_from_asn1_integer(sn);
+	}
+	
+	mLLSDInfo[CERT_VALID_TO] = cert_date_from_asn1_time(X509_get_notAfter(mCert));
+	mLLSDInfo[CERT_VALID_FROM] = cert_date_from_asn1_time(X509_get_notBefore(mCert));
+	mLLSDInfo[CERT_SHA1_DIGEST] = cert_get_digest("sha1", mCert);
+	mLLSDInfo[CERT_MD5_DIGEST] = cert_get_digest("md5", mCert);
+	// add the known extensions
+	mLLSDInfo[CERT_BASIC_CONSTRAINTS] = _basic_constraints_ext(mCert);
+	mLLSDInfo[CERT_KEY_USAGE] = _key_usage_ext(mCert);
+	mLLSDInfo[CERT_EXTENDED_KEY_USAGE] = _ext_key_usage_ext(mCert);
+	mLLSDInfo[CERT_SUBJECT_KEY_IDENTFIER] = _subject_key_identifier_ext(mCert);
+	mLLSDInfo[CERT_AUTHORITY_KEY_IDENTIFIER] = _authority_key_identifier_ext(mCert);
+	return mLLSDInfo; 
+}
+
+// Retrieve the basic constraints info
+LLSD _basic_constraints_ext(X509* cert)
+{
+	LLSD result;
+	BASIC_CONSTRAINTS *bs = (BASIC_CONSTRAINTS *)X509_get_ext_d2i(cert, NID_basic_constraints, NULL, NULL);
+	if(bs)
+	{
+		result = LLSD::emptyMap();
+		// Determines whether the cert can be used as a CA
+		result[CERT_BASIC_CONSTRAINTS_CA] = (bool)bs->ca;
+	
+		if(bs->pathlen) 
+		{
+			// the pathlen determines how deep a certificate chain can be from
+			// this CA
+			if((bs->pathlen->type == V_ASN1_NEG_INTEGER)
+			   || !bs->ca) 
+			{
+				result[CERT_BASIC_CONSTRAINTS_PATHLEN] = 0;
+			} 
+			else 
+			{
+				result[CERT_BASIC_CONSTRAINTS_PATHLEN] = (int)ASN1_INTEGER_get(bs->pathlen);
+			}
+		}
+
+	}
+	return result;
+}
+
+// retrieve the key usage, which specifies how the cert can be used.
+// 
+LLSD _key_usage_ext(X509* cert)
+{
+	LLSD result;
+	ASN1_STRING *usage_str = (ASN1_STRING *)X509_get_ext_d2i(cert, NID_key_usage, NULL, NULL);
+	if(usage_str)
+	{
+		result = LLSD::emptyArray();
+		long usage = 0;
+		if(usage_str->length > 0) 
+		{
+			usage = usage_str->data[0];
+			if(usage_str->length > 1)
+			{
+				usage |= usage_str->data[1] << 8;
+			}
+		}
+		ASN1_STRING_free(usage_str);
+		if(usage)
+		{
+			if(usage & KU_DIGITAL_SIGNATURE) result.append(LLSD((std::string)CERT_KU_DIGITAL_SIGNATURE));
+			if(usage & KU_NON_REPUDIATION) result.append(LLSD((std::string)CERT_KU_NON_REPUDIATION));
+			if(usage & KU_KEY_ENCIPHERMENT) result.append(LLSD((std::string)CERT_KU_KEY_ENCIPHERMENT));
+			if(usage & KU_DATA_ENCIPHERMENT) result.append(LLSD((std::string)CERT_KU_DATA_ENCIPHERMENT));
+			if(usage & KU_KEY_AGREEMENT) result.append(LLSD((std::string)CERT_KU_KEY_AGREEMENT));
+			if(usage & KU_KEY_CERT_SIGN) result.append(LLSD((std::string)CERT_KU_CERT_SIGN));			
+			if(usage & KU_CRL_SIGN) result.append(LLSD((std::string)CERT_KU_CRL_SIGN));	
+			if(usage & KU_ENCIPHER_ONLY) result.append(LLSD((std::string)CERT_KU_ENCIPHER_ONLY));				
+			if(usage & KU_DECIPHER_ONLY) result.append(LLSD((std::string)CERT_KU_DECIPHER_ONLY));		
+		}
+	}
+	return result;
+}
+
+// retrieve the extended key usage for the cert
+LLSD _ext_key_usage_ext(X509* cert)
+{
+	LLSD result;
+	EXTENDED_KEY_USAGE *eku = (EXTENDED_KEY_USAGE *)X509_get_ext_d2i(cert, NID_ext_key_usage, NULL, NULL);
+	if(eku)
+	{
+		result = LLSD::emptyArray();
+		while(sk_ASN1_OBJECT_num(eku))
+		{
+			ASN1_OBJECT *usage = sk_ASN1_OBJECT_pop(eku);
+			if(usage)
+			{
+				int nid = OBJ_obj2nid(usage);
+				if (nid)
+				{
+					std::string sn = OBJ_nid2sn(nid);
+					result.append(sn);
+				}
+				ASN1_OBJECT_free(usage);
+			}
+		}
+	}
+	return result;
+}
+
+// retrieve the subject key identifier of the cert
+LLSD _subject_key_identifier_ext(X509 *cert)
+{
+	LLSD result;
+	ASN1_OCTET_STRING *skeyid = (ASN1_OCTET_STRING *)X509_get_ext_d2i(cert, NID_subject_key_identifier, NULL, NULL);
+	if(skeyid)
+	{
+		result = cert_string_from_octet_string(skeyid);
+	}
+	return result;
+}
+
+// retrieve the authority key identifier of the cert
+LLSD _authority_key_identifier_ext(X509* cert)
+{
+	LLSD result;
+	AUTHORITY_KEYID *akeyid = (AUTHORITY_KEYID *)X509_get_ext_d2i(cert, NID_authority_key_identifier, NULL, NULL);
+	if(akeyid)
+	{
+		result = LLSD::emptyMap();
+		if(akeyid->keyid)
+		{
+			result[CERT_AUTHORITY_KEY_IDENTIFIER_ID] = cert_string_from_octet_string(akeyid->keyid);
+		}
+		if(akeyid->serial)
+		{
+			result[CERT_AUTHORITY_KEY_IDENTIFIER_SERIAL] = cert_string_from_asn1_integer(akeyid->serial);
+		}	
+	}
+	
+	// we ignore the issuer name in the authority key identifier, we check the issue name via
+	// the the issuer name entry in the cert.
+	
+
+	return result;
+}
+
+// retrieve an openssl x509 object,
+// which must be freed by X509_free
+X509* LLBasicCertificate::getOpenSSLX509() const
+{ 
+	return X509_dup(mCert); 
+}  
+
+// generate a single string containing the subject or issuer
+// name of the cert.
+std::string cert_string_name_from_X509_NAME(X509_NAME* name)
+{
+	char * name_bio_chars = NULL;
+	// get a memory bio
+	BIO *name_bio = BIO_new(BIO_s_mem());
+	// stream the name into the bio.  The name will be in the 'short name' format
+	X509_NAME_print_ex(name_bio, name, 0, XN_FLAG_RFC2253);
+	int length = BIO_get_mem_data(name_bio, &name_bio_chars);
+	std::string result = std::string(name_bio_chars, length);
+	BIO_free(name_bio);
+	return result;
+}
+
+// generate an LLSD from a certificate name (issuer or subject name).  
+// the name will be strings indexed by the 'long form'
+LLSD cert_name_from_X509_NAME(X509_NAME* name)
+{
+	LLSD result = LLSD::emptyMap();
+	int name_entries = X509_NAME_entry_count(name);
+	for (int entry_index=0; entry_index < name_entries; entry_index++) 
+	{
+		char buffer[32];
+		X509_NAME_ENTRY *entry = X509_NAME_get_entry(name, entry_index);
+		
+		std::string name_value = std::string((const char*)M_ASN1_STRING_data(X509_NAME_ENTRY_get_data(entry)), 
+											 M_ASN1_STRING_length(X509_NAME_ENTRY_get_data(entry)));
+
+		ASN1_OBJECT* name_obj = X509_NAME_ENTRY_get_object(entry);		
+		OBJ_obj2txt(buffer, sizeof(buffer), name_obj, 0);
+		std::string obj_buffer_str = std::string(buffer);
+		result[obj_buffer_str] = name_value;
+	}
+	
+	return result;
+}
+
+// Generate a string from an ASN1 integer.  ASN1 Integers are
+// bignums, so they can be 'infinitely' long, therefore we
+// cannot simply use a conversion to U64 or something.
+// We retrieve as a readable string for UI
+
+std::string cert_string_from_asn1_integer(ASN1_INTEGER* value)
+{
+	std::string result;
+	BIGNUM *bn = ASN1_INTEGER_to_BN(value, NULL);
+	if(bn)
+	{
+		char * ascii_bn = BN_bn2hex(bn);
+
+		if(ascii_bn)
+		{
+			result = ascii_bn;
+			OPENSSL_free(ascii_bn);
+		}
+		BN_free(bn);
+	}
+	return result;
+}
+
+// Generate a string from an OCTET string.
+// we retrieve as a 
+
+std::string cert_string_from_octet_string(ASN1_OCTET_STRING* value)
+{
+	
+	std::stringstream result;
+	result << std::hex << std::setprecision(2);
+	for (int i=0; i < value->length; i++)
+	{
+		if (i != 0) 
+		{
+			result << ":";
+		}
+		result  << std::setfill('0') << std::setw(2) << (int)value->data[i];
+	}
+	return result.str();
+}
+
+// Generate a string from an ASN1 integer.  ASN1 Integers are
+// bignums, so they can be 'infinitely' long, therefore we
+// cannot simply use a conversion to U64 or something.
+// We retrieve as a readable string for UI
+
+std::string cert_string_from_asn1_string(ASN1_STRING* value)
+{
+	char * string_bio_chars = NULL;
+	std::string result;
+	// get a memory bio
+	BIO *string_bio = BIO_new(BIO_s_mem());
+	if(!string_bio)
+	{
+		// stream the name into the bio.  The name will be in the 'short name' format
+		ASN1_STRING_print_ex(string_bio, value, ASN1_STRFLGS_RFC2253);
+		int length = BIO_get_mem_data(string_bio, &string_bio_chars);
+		result = std::string(string_bio_chars, length);
+		BIO_free(string_bio);
+	}
+	else
+	{
+		LL_WARNS("SECAPI") << "Could not allocate an openssl memory BIO." << LL_ENDL;
+	}
+	
+	return result;
+}
+
+// retrieve a date structure from an ASN1 time, for 
+// validity checking.
+LLDate cert_date_from_asn1_time(ASN1_TIME* asn1_time)
+{
+	
+	struct tm timestruct = {0};
+	int i = asn1_time->length;
+	
+	if (i < 10)
+	{
+		return LLDate();
+	}	
+	// convert the date from the ASN1 time (which is a string in ZULU time), to
+	// a timeval.
+	timestruct.tm_year = (asn1_time->data[0]-'0') * 10 + (asn1_time->data[1]-'0');
+	
+	/* Deal with Year 2000 */
+	if (timestruct.tm_year < 70)
+		timestruct.tm_year += 100;
+	
+	timestruct.tm_mon = (asn1_time->data[2]-'0') * 10 + (asn1_time->data[3]-'0') - 1;
+	timestruct.tm_mday = (asn1_time->data[4]-'0') * 10 + (asn1_time->data[5]-'0');
+	timestruct.tm_hour = (asn1_time->data[6]-'0') * 10 + (asn1_time->data[7]-'0');
+	timestruct.tm_min = (asn1_time->data[8]-'0') * 10 + (asn1_time->data[9]-'0');
+	timestruct.tm_sec = (asn1_time->data[10]-'0') * 10 + (asn1_time->data[11]-'0');
+
+#if LL_WINDOWS
+	return LLDate((F64)_mkgmtime(&timestruct));
+#else // LL_WINDOWS
+	return LLDate((F64)timegm(&timestruct));
+#endif // LL_WINDOWS
+}
+
+													   
+// Generate a string containing a digest.  The digest time is 'ssh1' or
+// 'md5', and the resulting string is of the form "aa:12:5c:' and so on
+std::string cert_get_digest(const std::string& digest_type, X509 *cert)
+{
+	unsigned char digest_data[BUFFER_READ_SIZE];
+	unsigned int len = sizeof(digest_data);
+	std::stringstream result;
+	const EVP_MD* digest = NULL;
+	// we could use EVP_get_digestbyname, but that requires initializer code which
+	// would require us to complicate things by plumbing it into the system.
+	if (digest_type == "md5")
+	{
+		digest = EVP_md5();
+	}
+	else if (digest_type == "sha1")
+	{
+		digest = EVP_sha1();
+	}
+	else
+	{
+		return std::string();
+	}
+
+	X509_digest(cert, digest, digest_data, &len);
+	result << std::hex << std::setprecision(2);
+	for (unsigned int i=0; i < len; i++)
+	{
+		if (i != 0) 
+		{
+			result << ":";
+		}
+		result  << std::setfill('0') << std::setw(2) << (int)digest_data[i];
+	}
+	return result.str();
+}
+
+
+// class LLBasicCertificateVector
+// This class represents a list of certificates, implemented by a vector of certificate pointers.
+// it contains implementations of the virtual functions for iterators, search, add, remove, etc.
+//
+
+//  Find a certificate in the list.
+// It will find a cert that has minimally the params listed, with the values being the same
+LLBasicCertificateVector::iterator LLBasicCertificateVector::find(const LLSD& params)
+{
+	BOOL found = FALSE;
+	// loop through the entire vector comparing the values in the certs
+	// against those passed in via the params.
+	// params should be a map.  Only the items specified in the map will be
+	// checked, but they must match exactly, even if they're maps or arrays.
+	
+	for(iterator cert = begin();
+		cert != end();
+		cert++)
+	{
+
+			found= TRUE;
+		LLSD cert_info = (*cert)->getLLSD();
+			for (LLSD::map_const_iterator param = params.beginMap();
+			 param != params.endMap();
+			 param++)
+		{
+
+			if (!cert_info.has((std::string)param->first) || 
+				(!valueCompareLLSD(cert_info[(std::string)param->first], param->second)))
+			{
+				found = FALSE;
+				break;
+			}
+		}
+		if (found)
+		{
+			return (cert);
+		}
+	}
+	return end();
+}
+
+// Insert a certificate into the store.  If the certificate already 
+// exists in the store, nothing is done.
+void  LLBasicCertificateVector::insert(iterator _iter, 
+									   LLPointer<LLCertificate> cert)
+{
+	LLSD cert_info = cert->getLLSD();
+	if (cert_info.isMap() && cert_info.has(CERT_SHA1_DIGEST))
+	{
+		LLSD existing_cert_info = LLSD::emptyMap();
+		existing_cert_info[CERT_MD5_DIGEST] = cert_info[CERT_MD5_DIGEST];
+		if(find(existing_cert_info) == end())
+		{
+			BasicIteratorImpl *basic_iter = dynamic_cast<BasicIteratorImpl*>(_iter.mImpl.get());
+			mCerts.insert(basic_iter->mIter, cert);
+		}
+	}
+}
+
+// remove a certificate from the store
+LLPointer<LLCertificate> LLBasicCertificateVector::erase(iterator _iter)
+{
+	
+	if (_iter != end())
+	{
+		BasicIteratorImpl *basic_iter = dynamic_cast<BasicIteratorImpl*>(_iter.mImpl.get());
+		LLPointer<LLCertificate> result = (*_iter);
+		mCerts.erase(basic_iter->mIter);
+		return result;
+	}
+	return NULL;
+}
+
+
+//
+// LLBasicCertificateStore
+// This class represents a store of CA certificates.  The basic implementation
+// uses a pem file such as the legacy CA.pem stored in the existing 
+// SL implementation.
+LLBasicCertificateStore::LLBasicCertificateStore(const std::string& filename)
+{
+	mFilename = filename;
+	load_from_file(filename);
+}
+
+void LLBasicCertificateStore::load_from_file(const std::string& filename)
+{
+	// scan the PEM file extracting each certificate
+	BIO* file_bio = BIO_new(BIO_s_file());
+	if(file_bio)
+	{
+		if (BIO_read_filename(file_bio, filename.c_str()) > 0)
+		{	
+			X509 *cert_x509 = NULL;
+			while((PEM_read_bio_X509(file_bio, &cert_x509, 0, NULL)) && 
+				  (cert_x509 != NULL))
+			{
+				try
+				{
+					add(new LLBasicCertificate(cert_x509));
+				}
+				catch (...)
+				{
+					LL_WARNS("SECAPI") << "Failure creating certificate from the certificate store file." << LL_ENDL;
+				}
+				X509_free(cert_x509);
+				cert_x509 = NULL;
+			}
+			BIO_free(file_bio);
+		}
+	}
+	else
+	{
+		LL_WARNS("SECAPI") << "Could not allocate a file BIO" << LL_ENDL;
+	}
+}
+
+
+LLBasicCertificateStore::~LLBasicCertificateStore()
+{
+}
+
+
+// persist the store
+void LLBasicCertificateStore::save()
+{
+	llofstream file_store(mFilename, llofstream::binary);
+	if(!file_store.fail())
+	{
+		for(iterator cert = begin();
+			cert != end();
+			cert++)
+		{
+			std::string pem = (*cert)->getPem();
+			if(!pem.empty())
+			{
+				file_store << (*cert)->getPem() << std::endl;
+			}
+		}
+		file_store.close();
+	}
+	else
+	{
+		LL_WARNS("SECAPI") << "Could not open certificate store " << mFilename << "for save" << LL_ENDL;
+	}
+}
+
+// return the store id
+std::string LLBasicCertificateStore::storeId() const
+{
+	// this is the basic handler which uses the CA.pem store,
+	// so we ignore this.
+	return std::string("");
+}
+
+
+//
+// LLBasicCertificateChain
+// This class represents a chain of certs, each cert being signed by the next cert
+// in the chain.  Certs must be properly signed by the parent
+LLBasicCertificateChain::LLBasicCertificateChain(const X509_STORE_CTX* store)
+{
+
+	// we're passed in a context, which contains a cert, and a blob of untrusted
+	// certificates which compose the chain.
+	if((store == NULL) || (store->cert == NULL))
+	{
+		LL_WARNS("SECAPI") << "An invalid store context was passed in when trying to create a certificate chain" << LL_ENDL;
+		return;
+	}
+	// grab the child cert
+	LLPointer<LLCertificate> current = new LLBasicCertificate(store->cert);
+
+	add(current);
+	if(store->untrusted != NULL)
+	{
+		// if there are other certs in the chain, we build up a vector
+		// of untrusted certs so we can search for the parents of each
+		// consecutive cert.
+		LLBasicCertificateVector untrusted_certs;
+		for(int i = 0; i < sk_X509_num(store->untrusted); i++)
+		{
+			LLPointer<LLCertificate> cert = new LLBasicCertificate(sk_X509_value(store->untrusted, i));
+			untrusted_certs.add(cert);
+
+		}		
+		while(untrusted_certs.size() > 0)
+		{
+			LLSD find_data = LLSD::emptyMap();
+			LLSD cert_data = current->getLLSD();
+			// we simply build the chain via subject/issuer name as the
+			// client should not have passed in multiple CA's with the same 
+			// subject name.  If they did, it'll come out in the wash during
+			// validation.
+			find_data[CERT_SUBJECT_NAME_STRING] = cert_data[CERT_ISSUER_NAME_STRING]; 
+			LLBasicCertificateVector::iterator issuer = untrusted_certs.find(find_data);
+			if (issuer != untrusted_certs.end())
+			{
+				current = untrusted_certs.erase(issuer);
+				add(current);
+			}
+			else
+			{
+				break;
+			}
+		}
+	}
+}
+
+
+// subdomain wildcard specifiers can be divided into 3 parts
+// the part before the first *, the part after the first * but before
+// the second *, and the part after the second *.
+// It then iterates over the second for each place in the string
+// that it matches.  ie if the subdomain was testfoofoobar, and
+// the wildcard was test*foo*bar, it would match test, then
+// recursively match foofoobar and foobar
+
+bool _cert_subdomain_wildcard_match(const std::string& subdomain,
+									const std::string& wildcard)
+{
+	// split wildcard into the portion before the *, and the portion after
+
+	int wildcard_pos = wildcard.find_first_of('*');	
+	// check the case where there is no wildcard.
+	if(wildcard_pos == wildcard.npos)
+	{
+		return (subdomain == wildcard);
+	}
+	
+	// we need to match the first part of the subdomain string up to the wildcard
+	// position
+	if(subdomain.substr(0, wildcard_pos) != wildcard.substr(0, wildcard_pos))
+	{
+		// the first portions of the strings didn't match
+		return FALSE;
+	}
+	
+	// as the portion of the wildcard string before the * matched, we need to check the
+	// portion afterwards.  Grab that portion.
+	std::string new_wildcard_string = wildcard.substr( wildcard_pos+1, wildcard.npos);
+	if(new_wildcard_string.empty())
+	{
+		// we had nothing after the *, so it's an automatic match
+		return TRUE;
+	}
+	
+	// grab the portion of the remaining wildcard string before the next '*'.  We need to find this
+	// within the remaining subdomain string. and then recursively check.
+	std::string new_wildcard_match_string = new_wildcard_string.substr(0, new_wildcard_string.find_first_of('*'));
+	
+	// grab the portion of the subdomain after the part that matched the initial wildcard portion
+	std::string new_subdomain = subdomain.substr(wildcard_pos, subdomain.npos);
+	
+	// iterate through the current subdomain, finding instances of the match string.
+	int sub_pos = new_subdomain.find_first_of(new_wildcard_match_string);
+	while(sub_pos != std::string::npos)
+	{
+		new_subdomain = new_subdomain.substr(sub_pos, std::string::npos);
+		if(_cert_subdomain_wildcard_match(new_subdomain, new_wildcard_string))
+		{
+			return TRUE;
+		}
+		sub_pos = new_subdomain.find_first_of(new_wildcard_match_string, 1);
+
+
+	}
+	// didn't find any instances of the match string that worked in the subdomain, so fail.
+	return FALSE;
+}
+
+
+// RFC2459 does not address wildcards as part of it's name matching
+// specification, and there is no RFC specifying wildcard matching,
+// RFC2818 does a few statements about wildcard matching, but is very 
+// general.  Generally, wildcard matching is per implementation, although
+// it's pretty similar.
+// in our case, we use the '*' wildcard character only, within each
+// subdomain.  The hostname and the CN specification should have the
+// same number of subdomains.
+// We then iterate that algorithm over each subdomain.
+bool _cert_hostname_wildcard_match(const std::string& hostname, const std::string& common_name)
+{
+	std::string new_hostname = hostname;
+	std::string new_cn = common_name;
+	
+	// find the last '.' in the hostname and the match name.
+	int subdomain_pos = new_hostname.find_last_of('.');
+	int subcn_pos = new_cn.find_last_of('.');
+	
+	// if the last char is a '.', strip it
+	if(subdomain_pos == (new_hostname.length()-1))
+	{
+		new_hostname = new_hostname.substr(0, subdomain_pos);
+		subdomain_pos = new_hostname.find_last_of('.');
+	}
+	if(subcn_pos == (new_cn.length()-1))
+	{
+		new_cn = new_cn.substr(0, subcn_pos);
+		subcn_pos = new_cn.find_last_of('.');
+	}	
+
+	// Check to see if there are any further '.' in the string.  
+	while((subcn_pos != std::string::npos) && (subdomain_pos != std::string::npos))
+	{
+		// snip out last subdomain in both the match string and the hostname
+		// The last bit for 'my.current.host.com' would be 'com'  
+		std::string cn_part = new_cn.substr(subcn_pos+1, std::string::npos);
+		std::string hostname_part = new_hostname.substr(subdomain_pos+1, std::string::npos);
+		
+		if(!_cert_subdomain_wildcard_match(new_hostname.substr(subdomain_pos+1, std::string::npos),
+										   cn_part))
+		{
+			return FALSE;
+		}
+		new_hostname = new_hostname.substr(0, subdomain_pos);
+		new_cn = new_cn.substr(0, subcn_pos);
+		subdomain_pos = new_hostname.find_last_of('.');
+		subcn_pos = new_cn.find_last_of('.');
+	}	
+	// check to see if the most significant portion of the common name is '*'.  If so, we can
+	// simply return success as child domains are also matched.
+	if(new_cn == "*")
+	{
+		// if it's just a '*' we support all child domains as well, so '*.
+		return TRUE;
+	}
+	
+	return _cert_subdomain_wildcard_match(new_hostname, new_cn);
+
+}
+
+// validate that the LLSD array in llsd_set contains the llsd_value 
+bool _LLSDArrayIncludesValue(const LLSD& llsd_set, LLSD llsd_value)
+{
+	for(LLSD::array_const_iterator set_value = llsd_set.beginArray();
+		set_value != llsd_set.endArray();
+		set_value++)
+	{
+		if(valueCompareLLSD((*set_value), llsd_value))
+		{
+			return TRUE;
+		}
+	}
+	return FALSE;
+}
+
+void _validateCert(int validation_policy,
+				  const LLPointer<LLCertificate> cert,
+				  const LLSD& validation_params,
+				  int depth)
+{
+
+	LLSD current_cert_info = cert->getLLSD();		
+	// check basic properties exist in the cert
+	if(!current_cert_info.has(CERT_SUBJECT_NAME) || !current_cert_info.has(CERT_SUBJECT_NAME_STRING))
+	{
+		throw LLCertException(cert, "Cert doesn't have a Subject Name");				
+	}
+	
+	if(!current_cert_info.has(CERT_ISSUER_NAME_STRING))
+	{
+		throw LLCertException(cert, "Cert doesn't have an Issuer Name");				
+	}
+	
+	// check basic properties exist in the cert
+	if(!current_cert_info.has(CERT_VALID_FROM) || !current_cert_info.has(CERT_VALID_TO))
+	{
+		throw LLCertException(cert, "Cert doesn't have an expiration period");				
+	}
+	if (!current_cert_info.has(CERT_SHA1_DIGEST))
+	{
+		throw LLCertException(cert, "No SHA1 digest");
+	}
+
+	if (validation_policy & VALIDATION_POLICY_TIME)
+	{
+
+		LLDate validation_date(time(NULL));
+		if(validation_params.has(CERT_VALIDATION_DATE))
+		{
+			validation_date = validation_params[CERT_VALIDATION_DATE];
+		}
+		
+		if((validation_date < current_cert_info[CERT_VALID_FROM].asDate()) ||
+		   (validation_date > current_cert_info[CERT_VALID_TO].asDate()))
+		{
+			throw LLCertValidationExpirationException(cert, validation_date);
+		}
+	}
+	if (validation_policy & VALIDATION_POLICY_SSL_KU)
+	{
+		if (current_cert_info.has(CERT_KEY_USAGE) && current_cert_info[CERT_KEY_USAGE].isArray() &&
+			(!(_LLSDArrayIncludesValue(current_cert_info[CERT_KEY_USAGE], 
+									   LLSD((std::string)CERT_KU_DIGITAL_SIGNATURE))) ||
+			!(_LLSDArrayIncludesValue(current_cert_info[CERT_KEY_USAGE], 
+									  LLSD((std::string)CERT_KU_KEY_ENCIPHERMENT)))))
+		{
+			throw LLCertKeyUsageValidationException(cert);
+		}
+		// only validate EKU if the cert has it
+		if(current_cert_info.has(CERT_EXTENDED_KEY_USAGE) && current_cert_info[CERT_EXTENDED_KEY_USAGE].isArray() &&	   
+		   (!_LLSDArrayIncludesValue(current_cert_info[CERT_EXTENDED_KEY_USAGE], 
+									LLSD((std::string)CERT_EKU_SERVER_AUTH))))
+		{
+			throw LLCertKeyUsageValidationException(cert);			
+		}
+	}
+	if (validation_policy & VALIDATION_POLICY_CA_KU)
+	{
+		if (current_cert_info.has(CERT_KEY_USAGE) && current_cert_info[CERT_KEY_USAGE].isArray() &&
+			(!_LLSDArrayIncludesValue(current_cert_info[CERT_KEY_USAGE], 
+									   (std::string)CERT_KU_CERT_SIGN)))
+			{
+				throw LLCertKeyUsageValidationException(cert);						
+			}
+	}
+	
+	// validate basic constraints
+	if ((validation_policy & VALIDATION_POLICY_CA_BASIC_CONSTRAINTS) &&
+		current_cert_info.has(CERT_BASIC_CONSTRAINTS) && 
+		current_cert_info[CERT_BASIC_CONSTRAINTS].isMap())
+	{
+		if(!current_cert_info[CERT_BASIC_CONSTRAINTS].has(CERT_BASIC_CONSTRAINTS_CA) ||
+		   !current_cert_info[CERT_BASIC_CONSTRAINTS][CERT_BASIC_CONSTRAINTS_CA])
+		{
+				throw LLCertBasicConstraintsValidationException(cert);
+		}
+		if (current_cert_info[CERT_BASIC_CONSTRAINTS].has(CERT_BASIC_CONSTRAINTS_PATHLEN) &&
+			((current_cert_info[CERT_BASIC_CONSTRAINTS][CERT_BASIC_CONSTRAINTS_PATHLEN].asInteger() != 0) &&
+			 (depth > current_cert_info[CERT_BASIC_CONSTRAINTS][CERT_BASIC_CONSTRAINTS_PATHLEN].asInteger())))
+		{
+			throw LLCertBasicConstraintsValidationException(cert);					
+		}
+	}
+}
+
+bool _verify_signature(LLPointer<LLCertificate> parent, 
+					   LLPointer<LLCertificate> child)
+{
+	bool verify_result = FALSE; 
+	LLSD cert1 = parent->getLLSD();
+	LLSD cert2 = child->getLLSD();
+	X509 *signing_cert = parent->getOpenSSLX509();
+	X509 *child_cert = child->getOpenSSLX509();
+	if((signing_cert != NULL) && (child_cert != NULL))
+	{
+		EVP_PKEY *pkey = X509_get_pubkey(signing_cert);
+		
+		
+		if(pkey)
+		{
+			int verify_code = X509_verify(child_cert, pkey);
+			verify_result = ( verify_code > 0);
+			EVP_PKEY_free(pkey);
+		}
+		else
+		{
+			LL_WARNS("SECAPI") << "Could not validate the cert chain signature, as the public key of the signing cert could not be retrieved" << LL_ENDL;
+		}
+
+	}
+	else
+	{
+		LL_WARNS("SECAPI") << "Signature verification failed as there are no certs in the chain" << LL_ENDL;
+	}
+	if(child_cert)
+	{
+		X509_free(child_cert);
+	}
+	if(signing_cert)
+	{
+		X509_free(signing_cert);
+	}
+	return verify_result;
+}
+
+// validate the certificate chain against a store.
+// There are many aspects of cert validatioin policy involved in
+// trust validation.  The policies in this validation algorithm include
+// * Hostname matching for SSL certs
+// * Expiration time matching
+// * Signature validation
+// * Chain trust (is the cert chain trusted against the store)
+// * Basic constraints
+// * key usage and extended key usage
+// TODO: We should add 'authority key identifier' for chaining.
+// This algorithm doesn't simply validate the chain by itself
+// and verify the last cert is in the certificate store, or points
+// to a cert in the store.  It validates whether any cert in the chain
+// is trusted in the store, even if it's not the last one.
+void LLBasicCertificateChain::validate(int validation_policy,
+									   LLPointer<LLCertificateStore> ca_store,
+									   const LLSD& validation_params)
+{
+
+	if(size() < 1)
+	{
+		throw LLCertException(NULL, "No certs in chain");
+	}
+	iterator current_cert = begin();
+	LLSD 	current_cert_info = (*current_cert)->getLLSD();
+	LLSD validation_date;
+	if (validation_params.has(CERT_VALIDATION_DATE))
+	{
+		validation_date = validation_params[CERT_VALIDATION_DATE];
+	}
+
+	if (validation_policy & VALIDATION_POLICY_HOSTNAME)
+	{
+		if(!validation_params.has(CERT_HOSTNAME))
+		{
+			throw LLCertException((*current_cert), "No hostname passed in for validation");			
+		}
+		if(!current_cert_info.has(CERT_SUBJECT_NAME) || !current_cert_info[CERT_SUBJECT_NAME].has(CERT_NAME_CN))
+		{
+			throw LLInvalidCertificate((*current_cert));				
+		}
+		
+		LL_INFOS("SECAPI") << "Validating the hostname " << validation_params[CERT_HOSTNAME].asString() << 
+		     "against the cert CN " << current_cert_info[CERT_SUBJECT_NAME][CERT_NAME_CN].asString() << LL_ENDL;
+		if(!_cert_hostname_wildcard_match(validation_params[CERT_HOSTNAME].asString(),
+										  current_cert_info[CERT_SUBJECT_NAME][CERT_NAME_CN].asString()))
+		{
+			throw LLCertValidationHostnameException(validation_params[CERT_HOSTNAME].asString(),
+													(*current_cert));
+		}
+	}
+	
+
+	int depth = 0;
+	LLPointer<LLCertificate> previous_cert;
+	// loop through the cert chain, validating the current cert against the next one.
+	while(current_cert != end())
+	{
+		
+		int local_validation_policy = validation_policy;
+		if(current_cert == begin())
+		{
+			// for the child cert, we don't validate CA stuff
+			local_validation_policy &= ~(VALIDATION_POLICY_CA_KU | 
+										 VALIDATION_POLICY_CA_BASIC_CONSTRAINTS);
+		}
+		else
+		{
+			// for non-child certs, we don't validate SSL Key usage
+			local_validation_policy &= ~VALIDATION_POLICY_SSL_KU;				
+			if(!_verify_signature((*current_cert),
+								  previous_cert))
+			{
+			   throw LLCertValidationInvalidSignatureException(previous_cert);
+			}
+		}
+		_validateCert(local_validation_policy,
+					  (*current_cert),
+					  validation_params,
+					  depth);
+		
+		// look for a CA in the CA store that may belong to this chain.
+		LLSD cert_llsd = (*current_cert)->getLLSD();
+		LLSD cert_search_params = LLSD::emptyMap();		
+		// is the cert itself in the store?
+		cert_search_params[CERT_SHA1_DIGEST] = cert_llsd[CERT_SHA1_DIGEST];
+		LLCertificateStore::iterator found_store_cert = ca_store->find(cert_search_params);
+		if(found_store_cert != ca_store->end())
+		{
+			return;
+		}
+		
+		// is the parent in the cert store?
+			
+		cert_search_params = LLSD::emptyMap();
+		cert_search_params[CERT_SUBJECT_NAME_STRING] = cert_llsd[CERT_ISSUER_NAME_STRING];
+		if (cert_llsd.has(CERT_AUTHORITY_KEY_IDENTIFIER))
+		{
+			LLSD cert_aki = cert_llsd[CERT_AUTHORITY_KEY_IDENTIFIER];
+			if(cert_aki.has(CERT_AUTHORITY_KEY_IDENTIFIER_ID))
+			{
+				cert_search_params[CERT_SUBJECT_KEY_IDENTFIER] = cert_aki[CERT_AUTHORITY_KEY_IDENTIFIER_ID];
+			}
+			if(cert_aki.has(CERT_AUTHORITY_KEY_IDENTIFIER_SERIAL))
+			{
+				cert_search_params[CERT_SERIAL_NUMBER] = cert_aki[CERT_AUTHORITY_KEY_IDENTIFIER_SERIAL];
+			}
+		}
+		found_store_cert = ca_store->find(cert_search_params);
+		
+		if(found_store_cert != ca_store->end())
+		{
+			LLSD foo = (*found_store_cert)->getLLSD();
+			// validate the store cert against the depth
+			_validateCert(validation_policy & VALIDATION_POLICY_CA_BASIC_CONSTRAINTS,
+						  (*found_store_cert),
+						  LLSD(),
+						  depth);
+			
+			// verify the signature of the CA
+			if(!_verify_signature((*found_store_cert),
+								  (*current_cert)))
+			{
+				throw LLCertValidationInvalidSignatureException(*current_cert);
+			}			
+			// successfully validated.
+			return;
+		}
+		previous_cert = (*current_cert);
+		current_cert++;
+			   depth++;
+	}
+	if (validation_policy & VALIDATION_POLICY_TRUSTED)
+	{
+		LLPointer<LLCertificate> untrusted_ca_cert = (*this)[size()-1];
+		// we reached the end without finding a trusted cert.
+		throw LLCertValidationTrustException((*this)[size()-1]);
+
+	}
+}
+
+
+// LLSecAPIBasicHandler Class
+// Interface handler class for the various security storage handlers.
+
+// We read the file on construction, and write it on destruction.  This
+// means multiple processes cannot modify the datastore.
+LLSecAPIBasicHandler::LLSecAPIBasicHandler(const std::string& protected_data_file,
+										   const std::string& legacy_password_path)
+{
+	mProtectedDataFilename = protected_data_file;
+	mProtectedDataMap = LLSD::emptyMap();
+	mLegacyPasswordPath = legacy_password_path;
+
+}
+
+LLSecAPIBasicHandler::LLSecAPIBasicHandler()
+{
+}
+
+
+void LLSecAPIBasicHandler::init()
+{
+	mProtectedDataMap = LLSD::emptyMap();
+	if (mProtectedDataFilename.length() == 0)
+	{
+		mProtectedDataFilename = gDirUtilp->getExpandedFilename(LL_PATH_USER_SETTINGS,
+															"bin_conf.dat");
+		mLegacyPasswordPath = gDirUtilp->getExpandedFilename(LL_PATH_USER_SETTINGS, "password.dat");
+	
+		mProtectedDataFilename = gDirUtilp->getExpandedFilename(LL_PATH_USER_SETTINGS,
+															"bin_conf.dat");	
+		std::string store_file = gDirUtilp->getExpandedFilename(LL_PATH_USER_SETTINGS,
+														"CA.pem");
+		// copy the CA file to a user writable location so we can manipulate it.
+		// for this provider, by using a user writable file, there is a risk that
+		// an attacking program can modify the file, but OS dependent providers
+		// will reduce that risk.
+		// by using a user file, modifications will be limited to one user if
+		// we read-only the main file
+		if (!LLFile::isfile(store_file))
+		{
+
+			std::string ca_file_path = gDirUtilp->getExpandedFilename(LL_PATH_APP_SETTINGS, "CA.pem");
+			llifstream ca_file(ca_file_path.c_str(), llifstream::binary | llifstream::in);
+			llofstream copied_store_file(store_file.c_str(), llofstream::binary | llofstream::out);
+
+			while(!ca_file.fail())
+			{
+				char buffer[BUFFER_READ_SIZE];
+				ca_file.read(buffer, sizeof(buffer));
+				copied_store_file.write(buffer, ca_file.gcount());
+			}
+			ca_file.close();
+			copied_store_file.close();
+		}
+		LL_INFOS("SECAPI") << "Loading certificate store from " << store_file << LL_ENDL;
+		mStore = new LLBasicCertificateStore(store_file);
+	}
+	_readProtectedData(); // initialize mProtectedDataMap
+						  // may throw LLProtectedDataException if saved datamap is not decryptable
+}
+LLSecAPIBasicHandler::~LLSecAPIBasicHandler()
+{
+	_writeProtectedData();
+}
+
+void LLSecAPIBasicHandler::_readProtectedData()
+{	
+	// attempt to load the file into our map
+	LLPointer<LLSDParser> parser = new LLSDXMLParser();
+	llifstream protected_data_stream(mProtectedDataFilename.c_str(), 
+									llifstream::binary);
+
+	if (!protected_data_stream.fail()) {
+		int offset;
+		U8 salt[STORE_SALT_SIZE];
+		U8 buffer[BUFFER_READ_SIZE];
+		U8 decrypted_buffer[BUFFER_READ_SIZE];
+		int decrypted_length;	
+		unsigned char MACAddress[MAC_ADDRESS_BYTES];
+		LLUUID::getNodeID(MACAddress);
+		LLXORCipher cipher(MACAddress, MAC_ADDRESS_BYTES);
+
+		// read in the salt and key
+		protected_data_stream.read((char *)salt, STORE_SALT_SIZE);
+		offset = 0;
+		if (protected_data_stream.gcount() < STORE_SALT_SIZE)
+		{
+			throw LLProtectedDataException("Config file too short.");
+		}
+
+		cipher.decrypt(salt, STORE_SALT_SIZE);		
+
+		// totally lame.  As we're not using the OS level protected data, we need to
+		// at least obfuscate the data.  We do this by using a salt stored at the head of the file
+		// to encrypt the data, therefore obfuscating it from someone using simple existing tools.
+		// We do include the MAC address as part of the obfuscation, which would require an
+		// attacker to get the MAC address as well as the protected store, which improves things
+		// somewhat.  It would be better to use the password, but as this store
+		// will be used to store the SL password when the user decides to have SL remember it, 
+		// so we can't use that.  OS-dependent store implementations will use the OS password/storage 
+		// mechanisms and are considered to be more secure.
+		// We've a strong intent to move to OS dependent protected data stores.
+		
+
+		// read in the rest of the file.
+		EVP_CIPHER_CTX ctx;
+		EVP_CIPHER_CTX_init(&ctx);
+		EVP_DecryptInit(&ctx, EVP_rc4(), salt, NULL);
+		// allocate memory:
+		std::string decrypted_data;	
+		
+		while(protected_data_stream.good()) {
+			// read data as a block:
+			protected_data_stream.read((char *)buffer, BUFFER_READ_SIZE);
+			
+			EVP_DecryptUpdate(&ctx, decrypted_buffer, &decrypted_length, 
+							  buffer, protected_data_stream.gcount());
+			decrypted_data.append((const char *)decrypted_buffer, protected_data_stream.gcount());
+		}
+		
+		// RC4 is a stream cipher, so we don't bother to EVP_DecryptFinal, as there is
+		// no block padding.
+		EVP_CIPHER_CTX_cleanup(&ctx);
+		std::istringstream parse_stream(decrypted_data);
+		if (parser->parse(parse_stream, mProtectedDataMap, 
+						  LLSDSerialize::SIZE_UNLIMITED) == LLSDParser::PARSE_FAILURE)
+		{
+			throw LLProtectedDataException("Config file cannot be decrypted.");
+		}
+	}
+}
+
+void LLSecAPIBasicHandler::_writeProtectedData()
+{	
+	std::ostringstream formatted_data_ostream;
+	U8 salt[STORE_SALT_SIZE];
+	U8 buffer[BUFFER_READ_SIZE];
+	U8 encrypted_buffer[BUFFER_READ_SIZE];
+
+	
+	if(mProtectedDataMap.isUndefined())
+	{
+		LLFile::remove(mProtectedDataFilename);
+		return;
+	}
+	// create a string with the formatted data.
+	LLSDSerialize::toXML(mProtectedDataMap, formatted_data_ostream);
+	std::istringstream formatted_data_istream(formatted_data_ostream.str());
+	// generate the seed
+	RAND_bytes(salt, STORE_SALT_SIZE);
+
+	
+	// write to a temp file so we don't clobber the initial file if there is
+	// an error.
+	std::string tmp_filename = mProtectedDataFilename + ".tmp";
+	
+	llofstream protected_data_stream(tmp_filename.c_str(), 
+										llofstream::binary);
+	try
+	{
+		
+		EVP_CIPHER_CTX ctx;
+		EVP_CIPHER_CTX_init(&ctx);
+		EVP_EncryptInit(&ctx, EVP_rc4(), salt, NULL);
+		unsigned char MACAddress[MAC_ADDRESS_BYTES];
+		LLUUID::getNodeID(MACAddress);
+		LLXORCipher cipher(MACAddress, MAC_ADDRESS_BYTES);
+		cipher.encrypt(salt, STORE_SALT_SIZE);
+		protected_data_stream.write((const char *)salt, STORE_SALT_SIZE);
+
+		while (formatted_data_istream.good())
+		{
+			formatted_data_istream.read((char *)buffer, BUFFER_READ_SIZE);
+			if(formatted_data_istream.gcount() == 0)
+			{
+				break;
+			}
+			int encrypted_length;
+			EVP_EncryptUpdate(&ctx, encrypted_buffer, &encrypted_length, 
+						  buffer, formatted_data_istream.gcount());
+			protected_data_stream.write((const char *)encrypted_buffer, encrypted_length);
+		}
+		
+		// no EVP_EncrypteFinal, as this is a stream cipher
+		EVP_CIPHER_CTX_cleanup(&ctx);
+
+		protected_data_stream.close();
+	}
+	catch (...)
+	{
+		// it's good practice to clean up any secure information on error
+		// (even though this file isn't really secure.  Perhaps in the future
+		// it may be, however.
+		LLFile::remove(tmp_filename);
+		throw LLProtectedDataException("Error writing Protected Data Store");
+	}
+
+	// move the temporary file to the specified file location.
+	if((((LLFile::isfile(mProtectedDataFilename) != 0) && 
+		 (LLFile::remove(mProtectedDataFilename) != 0))) || 
+	   (LLFile::rename(tmp_filename, mProtectedDataFilename)))
+	{
+		LLFile::remove(tmp_filename);
+		throw LLProtectedDataException("Could not overwrite protected data store");
+	}
+}
+		
+// instantiate a certificate from a pem string
+LLPointer<LLCertificate> LLSecAPIBasicHandler::getCertificate(const std::string& pem_cert)
+{
+	LLPointer<LLCertificate> result = new LLBasicCertificate(pem_cert);
+	return result;
+}
+		
+
+		
+// instiate a certificate from an openssl X509 structure
+LLPointer<LLCertificate> LLSecAPIBasicHandler::getCertificate(X509* openssl_cert)
+{
+	LLPointer<LLCertificate> result = new LLBasicCertificate(openssl_cert);
+	return result;		
+}
+		
+// instantiate a chain from an X509_STORE_CTX
+LLPointer<LLCertificateChain> LLSecAPIBasicHandler::getCertificateChain(const X509_STORE_CTX* chain)
+{
+	LLPointer<LLCertificateChain> result = new LLBasicCertificateChain(chain);
+	return result;
+}
+		
+// instantiate a cert store given it's id.  if a persisted version
+// exists, it'll be loaded.  If not, one will be created (but not
+// persisted)
+LLPointer<LLCertificateStore> LLSecAPIBasicHandler::getCertificateStore(const std::string& store_id)
+{
+	return mStore;
+}
+		
+// retrieve protected data
+LLSD LLSecAPIBasicHandler::getProtectedData(const std::string& data_type,
+											const std::string& data_id)
+{
+
+	if (mProtectedDataMap.has(data_type) && 
+		mProtectedDataMap[data_type].isMap() && 
+		mProtectedDataMap[data_type].has(data_id))
+	{
+		return mProtectedDataMap[data_type][data_id];
+	}
+																				
+	return LLSD();
+}
+
+void LLSecAPIBasicHandler::deleteProtectedData(const std::string& data_type,
+											   const std::string& data_id)
+{
+	if (mProtectedDataMap.has(data_type) &&
+		mProtectedDataMap[data_type].isMap() &&
+		mProtectedDataMap[data_type].has(data_id))
+		{
+			mProtectedDataMap[data_type].erase(data_id);
+		}
+}
+
+
+//
+// persist data in a protected store
+//
+void LLSecAPIBasicHandler::setProtectedData(const std::string& data_type,
+											const std::string& data_id,
+											const LLSD& data)
+{
+	if (!mProtectedDataMap.has(data_type) || !mProtectedDataMap[data_type].isMap()) {
+		mProtectedDataMap[data_type] = LLSD::emptyMap();
+	}
+	
+	mProtectedDataMap[data_type][data_id] = data; 
+}
+
+//
+// Create a credential object from an identifier and authenticator.  credentials are
+// per grid.
+LLPointer<LLCredential> LLSecAPIBasicHandler::createCredential(const std::string& grid,
+															   const LLSD& identifier, 
+															   const LLSD& authenticator)
+{
+	LLPointer<LLSecAPIBasicCredential> result = new LLSecAPIBasicCredential(grid);
+	result->setCredentialData(identifier, authenticator);
+	return result;
+}
+
+// Load a credential from the credential store, given the grid
+LLPointer<LLCredential> LLSecAPIBasicHandler::loadCredential(const std::string& grid)
+{
+	LLSD credential = getProtectedData("credential", grid);
+	LLPointer<LLSecAPIBasicCredential> result = new LLSecAPIBasicCredential(grid);
+	if(credential.isMap() && 
+	   credential.has("identifier"))
+	{
+
+		LLSD identifier = credential["identifier"];
+		LLSD authenticator;
+		if (credential.has("authenticator"))
+		{
+			authenticator = credential["authenticator"];
+		}
+		result->setCredentialData(identifier, authenticator);
+	}
+	else
+	{
+		// credential was not in protected storage, so pull the credential
+		// from the legacy store.
+		std::string first_name = gSavedSettings.getString("FirstName");
+		std::string last_name = gSavedSettings.getString("LastName");
+		
+		if ((first_name != "") &&
+			(last_name != ""))
+		{
+			LLSD identifier = LLSD::emptyMap();
+			LLSD authenticator;
+			identifier["type"] = "agent";
+			identifier["first_name"] = first_name;
+			identifier["last_name"] = last_name;
+			
+			std::string legacy_password = _legacyLoadPassword();
+			if (legacy_password.length() > 0)
+			{
+				authenticator = LLSD::emptyMap();
+				authenticator["type"] = "hash";
+				authenticator["algorithm"] = "md5";
+				authenticator["secret"] = legacy_password;
+			}
+			result->setCredentialData(identifier, authenticator);
+		}		
+	}
+	return result;
+}
+
+// Save the credential to the credential store.  Save the authenticator also if requested.
+// That feature is used to implement the 'remember password' functionality.
+void LLSecAPIBasicHandler::saveCredential(LLPointer<LLCredential> cred, bool save_authenticator)
+{
+	LLSD credential = LLSD::emptyMap();
+	credential["identifier"] = cred->getIdentifier(); 
+	if (save_authenticator) 
+	{
+		credential["authenticator"] = cred->getAuthenticator();
+	}
+	LL_INFOS("SECAPI") << "Saving Credential " << cred->getGrid() << ":" << cred->userID() << " " << save_authenticator << LL_ENDL;
+	setProtectedData("credential", cred->getGrid(), credential);
+	//*TODO: If we're saving Agni credentials, should we write the
+	// credentials to the legacy password.dat/etc?
+	_writeProtectedData();
+}
+
+// Remove a credential from the credential store.
+void LLSecAPIBasicHandler::deleteCredential(LLPointer<LLCredential> cred)
+{
+	LLSD undefVal;
+	deleteProtectedData("credential", cred->getGrid());
+	cred->setCredentialData(undefVal, undefVal);
+	_writeProtectedData();
+}
+
+// load the legacy hash for agni, and decrypt it given the 
+// mac address
+std::string LLSecAPIBasicHandler::_legacyLoadPassword()
+{
+	const S32 HASHED_LENGTH = 32;	
+	std::vector<U8> buffer(HASHED_LENGTH);
+	llifstream password_file(mLegacyPasswordPath, llifstream::binary);
+	
+	if(password_file.fail())
+	{
+		return std::string("");
+	}
+	
+	password_file.read((char*)&buffer[0], buffer.size());
+	if(password_file.gcount() != buffer.size())
+	{
+		return std::string("");
+	}
+	
+	// Decipher with MAC address
+	unsigned char MACAddress[MAC_ADDRESS_BYTES];
+	LLUUID::getNodeID(MACAddress);
+	LLXORCipher cipher(MACAddress, 6);
+	cipher.decrypt(&buffer[0], buffer.size());
+	
+	return std::string((const char*)&buffer[0], buffer.size());
+}
+
+
+// return an identifier for the user
+std::string LLSecAPIBasicCredential::userID() const
+{
+	if (!mIdentifier.isMap())
+	{
+		return mGrid + "(null)";
+	}
+	else if ((std::string)mIdentifier["type"] == "agent")
+	{
+		return  (std::string)mIdentifier["first_name"] + "_" + (std::string)mIdentifier["last_name"];
+	}
+	else if ((std::string)mIdentifier["type"] == "account")
+	{
+		return (std::string)mIdentifier["account_name"];
+	}
+
+	return "unknown";
+
+}
+
+// return a printable user identifier
+std::string LLSecAPIBasicCredential::asString() const
+{
+	if (!mIdentifier.isMap())
+	{
+		return mGrid + ":(null)";
+	}
+	else if ((std::string)mIdentifier["type"] == "agent")
+	{
+		return mGrid + ":" + (std::string)mIdentifier["first_name"] + " " + (std::string)mIdentifier["last_name"];
+	}
+	else if ((std::string)mIdentifier["type"] == "account")
+	{
+		return mGrid + ":" + (std::string)mIdentifier["account_name"];
+	}
+
+	return mGrid + ":(unknown type)";
+}
+
+
+bool valueCompareLLSD(const LLSD& lhs, const LLSD& rhs)
+{
+	if (lhs.type() != rhs.type())
+	{
+		return FALSE;
+	}
+    if (lhs.isMap())
+	{
+		// iterate through the map, verifying the right hand side has all of the
+		// values that the left hand side has.
+		for (LLSD::map_const_iterator litt = lhs.beginMap();
+			 litt != lhs.endMap();
+			 litt++)
+		{
+			if (!rhs.has(litt->first))
+			{
+				return FALSE;
+			}
+		}
+		
+		// Now validate that the left hand side has everything the
+		// right hand side has, and that the values are equal.
+		for (LLSD::map_const_iterator ritt = rhs.beginMap();
+			 ritt != rhs.endMap();
+			 ritt++)
+		{
+			if (!lhs.has(ritt->first))
+			{
+				return FALSE;
+			}
+			if (!valueCompareLLSD(lhs[ritt->first], ritt->second))
+			{
+				return FALSE;
+			}
+		}
+		return TRUE;
+	}
+    else if (lhs.isArray())
+	{
+		LLSD::array_const_iterator ritt = rhs.beginArray();
+		// iterate through the array, comparing
+		for (LLSD::array_const_iterator litt = lhs.beginArray();
+			 litt != lhs.endArray();
+			 litt++)
+		{
+			if (!valueCompareLLSD(*ritt, *litt))
+			{
+				return FALSE;
+			}
+			ritt++;
+		}
+		
+		return (ritt == rhs.endArray());
+	}
+    else
+	{
+		// simple type, compare as string
+		return (lhs.asString() == rhs.asString());
+	}
+	
+}