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|
/**
* XMLSec library
*
* X509 support
*
*
* This is free software; see Copyright file in the source
* distribution for preciese wording.
*
* Copyright (C) 2003 Cordys R&D BV, All rights reserved.
* Copyright (C) 2003-2016 Aleksey Sanin <aleksey@aleksey.com>. All Rights Reserved.
*/
#include "globals.h"
#ifndef XMLSEC_NO_X509
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include <libxml/tree.h>
#include <xmlsec/xmlsec.h>
#include <xmlsec/xmltree.h>
#include <xmlsec/keys.h>
#include <xmlsec/keyinfo.h>
#include <xmlsec/keysmngr.h>
#include <xmlsec/base64.h>
#include <xmlsec/bn.h>
#include <xmlsec/errors.h>
#include <xmlsec/mscrypto/crypto.h>
#include <xmlsec/mscrypto/x509.h>
#include "private.h"
/**************************************************************************
*
* Internal MSCRYPTO X509 store CTX
*
*************************************************************************/
typedef struct _xmlSecMSCryptoX509StoreCtx xmlSecMSCryptoX509StoreCtx,
*xmlSecMSCryptoX509StoreCtxPtr;
struct _xmlSecMSCryptoX509StoreCtx {
HCERTSTORE trusted;
HCERTSTORE untrusted;
int dont_use_system_trusted_certs;
};
/****************************************************************************
*
* xmlSecMSCryptoKeyDataStoreX509Id:
*
* xmlSecMSCryptoX509StoreCtx is located after xmlSecTransform
*
***************************************************************************/
#define xmlSecMSCryptoX509StoreGetCtx(store) \
((xmlSecMSCryptoX509StoreCtxPtr)(((xmlSecByte*)(store)) + \
sizeof(xmlSecKeyDataStoreKlass)))
#define xmlSecMSCryptoX509StoreSize \
(sizeof(xmlSecKeyDataStoreKlass) + sizeof(xmlSecMSCryptoX509StoreCtx))
static int xmlSecMSCryptoX509StoreInitialize (xmlSecKeyDataStorePtr store);
static void xmlSecMSCryptoX509StoreFinalize (xmlSecKeyDataStorePtr store);
static xmlSecKeyDataStoreKlass xmlSecMSCryptoX509StoreKlass = {
sizeof(xmlSecKeyDataStoreKlass),
xmlSecMSCryptoX509StoreSize,
/* data */
xmlSecNameX509Store, /* const xmlChar* name; */
/* constructors/destructor */
xmlSecMSCryptoX509StoreInitialize, /* xmlSecKeyDataStoreInitializeMethod initialize; */
xmlSecMSCryptoX509StoreFinalize, /* xmlSecKeyDataStoreFinalizeMethod finalize; */
/* reserved for the future */
NULL, /* void* reserved0; */
NULL, /* void* reserved1; */
};
static PCCERT_CONTEXT xmlSecMSCryptoX509FindCert(HCERTSTORE store,
const xmlChar *subjectName,
const xmlChar *issuerName,
const xmlChar *issuerSerial,
const xmlChar *ski);
/**
* xmlSecMSCryptoX509StoreGetKlass:
*
* The MSCrypto X509 certificates key data store klass.
*
* Returns: pointer to MSCrypto X509 certificates key data store klass.
*/
xmlSecKeyDataStoreId
xmlSecMSCryptoX509StoreGetKlass(void) {
return(&xmlSecMSCryptoX509StoreKlass);
}
/**
* xmlSecMSCryptoX509StoreFindCert:
* @store: the pointer to X509 key data store klass.
* @subjectName: the desired certificate name.
* @issuerName: the desired certificate issuer name.
* @issuerSerial: the desired certificate issuer serial number.
* @ski: the desired certificate SKI.
* @keyInfoCtx: the pointer to <dsig:KeyInfo/> element processing context.
*
* Searches @store for a certificate that matches given criteria.
*
* Returns: pointer to found certificate or NULL if certificate is not found
* or an error occurs.
*/
PCCERT_CONTEXT
xmlSecMSCryptoX509StoreFindCert(xmlSecKeyDataStorePtr store, xmlChar *subjectName,
xmlChar *issuerName, xmlChar *issuerSerial,
xmlChar *ski, xmlSecKeyInfoCtx* keyInfoCtx) {
xmlSecMSCryptoX509StoreCtxPtr ctx;
PCCERT_CONTEXT pCert = NULL;
xmlSecAssert2(xmlSecKeyDataStoreCheckId(store, xmlSecMSCryptoX509StoreId), NULL);
xmlSecAssert2(keyInfoCtx != NULL, NULL);
ctx = xmlSecMSCryptoX509StoreGetCtx(store);
xmlSecAssert2(ctx != NULL, NULL);
/* search untrusted certs store */
if((ctx->untrusted != NULL) && (pCert == NULL)) {
pCert = xmlSecMSCryptoX509FindCert(ctx->untrusted, subjectName, issuerName, issuerSerial, ski);
}
/* search untrusted certs store */
if((ctx->trusted != NULL) && (pCert == NULL)) {
pCert = xmlSecMSCryptoX509FindCert(ctx->trusted, subjectName, issuerName, issuerSerial, ski);
}
return pCert;
}
static void
xmlSecMSCryptoUnixTimeToFileTime(time_t t, LPFILETIME pft) {
/* Note that LONGLONG is a 64-bit value */
LONGLONG ll;
xmlSecAssert(pft != NULL);
#if defined( __MINGW32__)
ll = Int32x32To64(t, 10000000) + 116444736000000000ULL;
#else
ll = Int32x32To64(t, 10000000) + 116444736000000000;
#endif
pft->dwLowDateTime = (DWORD)ll;
pft->dwHighDateTime = ll >> 32;
}
static BOOL
xmlSecMSCrypoVerifyCertTime(PCCERT_CONTEXT pCert, LPFILETIME pft) {
xmlSecAssert2(pCert != NULL, FALSE);
xmlSecAssert2(pCert->pCertInfo != NULL, FALSE);
xmlSecAssert2(pft != NULL, FALSE);
if(1 == CompareFileTime(&(pCert->pCertInfo->NotBefore), pft)) {
return (FALSE);
}
if(-1 == CompareFileTime(&(pCert->pCertInfo->NotAfter), pft)) {
return (FALSE);
}
return (TRUE);
}
static BOOL
xmlSecMSCryptoCheckRevocation(HCERTSTORE hStore, PCCERT_CONTEXT pCert) {
PCCRL_CONTEXT pCrl = NULL;
PCRL_ENTRY pCrlEntry = NULL;
xmlSecAssert2(pCert != NULL, FALSE);
xmlSecAssert2(hStore != NULL, FALSE);
while((pCrl = CertEnumCRLsInStore(hStore, pCrl)) != NULL) {
if (CertFindCertificateInCRL(pCert, pCrl, 0, NULL, &pCrlEntry) && (pCrlEntry != NULL)) {
xmlSecError(XMLSEC_ERRORS_HERE,
NULL,
"CertFindCertificateInCRL",
XMLSEC_ERRORS_R_CERT_VERIFY_FAILED,
"cert found in crl list");
return(FALSE);
}
}
return(TRUE);
}
static void
xmlSecMSCryptoX509StoreCertError(xmlSecKeyDataStorePtr store, PCCERT_CONTEXT cert, DWORD flags) {
xmlChar * subject = NULL;
DWORD dwSize;
xmlSecAssert(xmlSecKeyDataStoreCheckId(store, xmlSecMSCryptoX509StoreId));
xmlSecAssert(cert != NULL);
xmlSecAssert(flags != 0);
/* get certs subject */
subject = xmlSecMSCryptoX509GetNameString(cert, CERT_NAME_RDN_TYPE, 0, NULL);
if(subject == NULL) {
xmlSecError(XMLSEC_ERRORS_HERE,
"xmlSecMSCryptoX509GetNameString",
NULL,
XMLSEC_ERRORS_R_XMLSEC_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return;
}
/* print error */
if (flags & CERT_STORE_SIGNATURE_FLAG) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecKeyDataStoreGetName(store)),
xmlSecErrorsSafeString(subject),
XMLSEC_ERRORS_R_CERT_VERIFY_FAILED,
"signature");
} else if (flags & CERT_STORE_TIME_VALIDITY_FLAG) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecKeyDataStoreGetName(store)),
xmlSecErrorsSafeString(subject),
XMLSEC_ERRORS_R_CERT_HAS_EXPIRED,
XMLSEC_ERRORS_NO_MESSAGE);
} else if (flags & CERT_STORE_REVOCATION_FLAG) {
if (flags & CERT_STORE_NO_CRL_FLAG) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecKeyDataStoreGetName(store)),
xmlSecErrorsSafeString(subject),
XMLSEC_ERRORS_R_CERT_REVOKED,
"no crl");
} else {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecKeyDataStoreGetName(store)),
xmlSecErrorsSafeString(subject),
XMLSEC_ERRORS_R_CERT_REVOKED,
XMLSEC_ERRORS_NO_MESSAGE);
}
} else {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecKeyDataStoreGetName(store)),
xmlSecErrorsSafeString(subject),
XMLSEC_ERRORS_R_CERT_VERIFY_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
}
xmlFree(subject);
}
/**
* xmlSecBuildChainUsingWinapi:
* @cert: the certificate we check
* @pfTime: pointer to FILETIME that we are interested in
* @store_untrusted: untrusted certificates added via API
* @store_doc: untrusted certificates/CRLs extracted from a document
*
* Builds certificates chain using Windows API.
*
* Returns: TRUE on success or FALSE otherwise.
*/
static BOOL
xmlSecBuildChainUsingWinapi (PCCERT_CONTEXT cert, LPFILETIME pfTime,
HCERTSTORE store_untrusted, HCERTSTORE store_doc)
{
PCCERT_CHAIN_CONTEXT pChainContext = NULL;
CERT_CHAIN_PARA chainPara;
BOOL rc = FALSE;
HCERTSTORE store_add = NULL;
/* Initialize data structures. */
memset(&chainPara, 0, sizeof(CERT_CHAIN_PARA));
chainPara.cbSize = sizeof(CERT_CHAIN_PARA);
/* Create additional store for CertGetCertificateChain() */
store_add = CertOpenStore(CERT_STORE_PROV_COLLECTION, 0, 0, 0, NULL);
if (!store_add) {
xmlSecError(XMLSEC_ERRORS_HERE,
"chain additional collection store",
"CertOpenStore",
XMLSEC_ERRORS_R_CRYPTO_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
goto end;
}
if (!CertAddStoreToCollection(store_add, store_doc, 0, 0)) {
xmlSecError(XMLSEC_ERRORS_HERE,
"adding document store",
"CertAddStoreToCollection",
XMLSEC_ERRORS_R_CRYPTO_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
goto end;
}
if (!CertAddStoreToCollection(store_add, store_untrusted, 0, 0)) {
xmlSecError(XMLSEC_ERRORS_HERE,
"adding untrusted store",
"CertAddStoreToCollection",
XMLSEC_ERRORS_R_CRYPTO_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
goto end;
}
/* Build a chain using CertGetCertificateChain
and the certificate retrieved. */
if(!CertGetCertificateChain(
NULL, /* use the default chain engine */
cert,
pfTime,
store_add,
&chainPara,
CERT_CHAIN_REVOCATION_CHECK_CHAIN,
NULL,
&pChainContext))
{
xmlSecError(XMLSEC_ERRORS_HERE,
"building certificate chain, checking root",
"CertGetCertificateChain",
XMLSEC_ERRORS_R_CRYPTO_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
goto end;
}
if (pChainContext->TrustStatus.dwErrorStatus == CERT_TRUST_REVOCATION_STATUS_UNKNOWN) {
CertFreeCertificateChain(pChainContext); pChainContext = NULL;
if(!CertGetCertificateChain(
NULL, /* use the default chain engine */
cert,
pfTime,
store_add,
&chainPara,
CERT_CHAIN_REVOCATION_CHECK_CHAIN_EXCLUDE_ROOT,
NULL,
&pChainContext))
{
xmlSecError(XMLSEC_ERRORS_HERE,
"building certificate chain, excluding root",
"CertGetCertificateChain",
XMLSEC_ERRORS_R_CRYPTO_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
goto end;
}
}
if (pChainContext->TrustStatus.dwErrorStatus == CERT_TRUST_NO_ERROR)
rc = TRUE;
end:
if (pChainContext) CertFreeCertificateChain(pChainContext);
if (store_add) CertCloseStore(store_add, 0);
return (rc);
}
/**
* xmlSecMSCryptoBuildCertChainManually:
* @cert: the certificate we check
* @pfTime: pointer to FILETIME that we are interested in
* @store_trusted: trusted certificates added via API
* @store_untrusted: untrusted certificates added via API
* @certs: untrusted certificates/CRLs extracted from a document
* @store: pointer to store klass passed to error functions
*
* Builds certificates chain manually.
*
* Returns: TRUE on success or FALSE otherwise.
*/
static BOOL
xmlSecMSCryptoBuildCertChainManually (PCCERT_CONTEXT cert, LPFILETIME pfTime,
HCERTSTORE store_trusted, HCERTSTORE store_untrusted, HCERTSTORE certs,
xmlSecKeyDataStorePtr store) {
PCCERT_CONTEXT issuerCert = NULL;
DWORD flags;
if (!xmlSecMSCrypoVerifyCertTime(cert, pfTime)) {
xmlSecMSCryptoX509StoreCertError(store, cert, CERT_STORE_TIME_VALIDITY_FLAG);
return(FALSE);
}
if (!xmlSecMSCryptoCheckRevocation(certs, cert)) {
return(FALSE);
}
/*
* Try to find the cert in the trusted cert store. We will trust
* the certificate in the trusted store.
*/
issuerCert = CertFindCertificateInStore(store_trusted,
X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
0,
CERT_FIND_SUBJECT_NAME,
&(cert->pCertInfo->Subject),
NULL);
if( issuerCert != NULL) {
/* We have found the trusted cert, so return true */
/* todo: do we want to verify the trusted cert's revocation? we must, I think */
CertFreeCertificateContext( issuerCert ) ;
return( TRUE ) ;
}
/* Check whether the certificate is self signed certificate */
if(CertCompareCertificateName(X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, &(cert->pCertInfo->Subject), &(cert->pCertInfo->Issuer))) {
return(FALSE);
}
/* try to find issuer cert in the trusted cert in the store */
issuerCert = CertFindCertificateInStore(store_trusted,
X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
0,
CERT_FIND_SUBJECT_NAME,
&(cert->pCertInfo->Issuer),
NULL);
if(issuerCert != NULL) {
flags = CERT_STORE_REVOCATION_FLAG | CERT_STORE_SIGNATURE_FLAG;
if(!CertVerifySubjectCertificateContext(cert, issuerCert, &flags)) {
xmlSecMSCryptoX509StoreCertError(store, issuerCert, flags);
CertFreeCertificateContext(issuerCert);
return(FALSE);
}
/* todo: do we want to verify the trusted cert? we must check
* revocation, I think */
CertFreeCertificateContext(issuerCert);
return(TRUE);
}
/* try the untrusted certs in the chain */
issuerCert = CertFindCertificateInStore(certs,
X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
0,
CERT_FIND_SUBJECT_NAME,
&(cert->pCertInfo->Issuer),
NULL);
if(issuerCert != NULL) {
flags = CERT_STORE_REVOCATION_FLAG | CERT_STORE_SIGNATURE_FLAG;
if(!CertVerifySubjectCertificateContext(cert, issuerCert, &flags)) {
xmlSecMSCryptoX509StoreCertError(store, issuerCert, flags);
CertFreeCertificateContext(issuerCert);
return(FALSE);
}
if(!xmlSecMSCryptoBuildCertChainManually(issuerCert, pfTime, store_trusted, store_untrusted, certs, store)) {
xmlSecMSCryptoX509StoreCertError(store, issuerCert, flags);
CertFreeCertificateContext(issuerCert);
return(FALSE);
}
CertFreeCertificateContext(issuerCert);
return(TRUE);
}
/* try the untrusted certs in the store */
issuerCert = CertFindCertificateInStore(store_untrusted,
X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
0,
CERT_FIND_SUBJECT_NAME,
&(cert->pCertInfo->Issuer),
NULL);
if(issuerCert != NULL) {
flags = CERT_STORE_REVOCATION_FLAG | CERT_STORE_SIGNATURE_FLAG;
if(!CertVerifySubjectCertificateContext(cert, issuerCert, &flags)) {
xmlSecMSCryptoX509StoreCertError(store, issuerCert, flags);
CertFreeCertificateContext(issuerCert);
return(FALSE);
}
if(!xmlSecMSCryptoBuildCertChainManually(issuerCert, pfTime, store_trusted, store_untrusted, certs, store)) {
CertFreeCertificateContext(issuerCert);
return(FALSE);
}
CertFreeCertificateContext(issuerCert);
return(TRUE);
}
return(FALSE);
}
static BOOL
xmlSecMSCryptoX509StoreConstructCertsChain(xmlSecKeyDataStorePtr store, PCCERT_CONTEXT cert, HCERTSTORE certs,
xmlSecKeyInfoCtx* keyInfoCtx) {
xmlSecMSCryptoX509StoreCtxPtr ctx;
PCCERT_CONTEXT tempCert = NULL;
FILETIME fTime;
BOOL res = FALSE;
xmlSecAssert2(xmlSecKeyDataStoreCheckId(store, xmlSecMSCryptoX509StoreId), FALSE);
xmlSecAssert2(cert != NULL, FALSE);
xmlSecAssert2(cert->pCertInfo != NULL, FALSE);
xmlSecAssert2(certs != NULL, FALSE);
xmlSecAssert2(keyInfoCtx != NULL, FALSE);
ctx = xmlSecMSCryptoX509StoreGetCtx(store);
xmlSecAssert2(ctx != NULL, FALSE);
xmlSecAssert2(ctx->trusted != NULL, FALSE);
xmlSecAssert2(ctx->untrusted != NULL, FALSE);
if(keyInfoCtx->certsVerificationTime > 0) {
/* convert the time to FILETIME */
xmlSecMSCryptoUnixTimeToFileTime(keyInfoCtx->certsVerificationTime, &fTime);
} else {
/* Defaults to current time */
GetSystemTimeAsFileTime(&fTime);
}
/* try the certificates in the keys manager */
if(!res) {
tempCert = CertEnumCertificatesInStore(ctx->trusted, NULL);
if(tempCert) {
CertFreeCertificateContext(tempCert);
res = xmlSecMSCryptoBuildCertChainManually(cert, &fTime, ctx->trusted, ctx->untrusted, certs, store);
}
}
/* try the certificates in the system */
if(!res && !ctx->dont_use_system_trusted_certs) {
res = xmlSecBuildChainUsingWinapi(cert, &fTime, ctx->untrusted, certs);
}
/* done */
return res;
}
/**
* xmlSecMSCryptoX509StoreVerify:
* @store: the pointer to X509 certificate context store klass.
* @certs: the untrusted certificates stack.
* @keyInfoCtx: the pointer to <dsig:KeyInfo/> element processing context.
*
* Verifies @certs list.
*
* Returns: pointer to the first verified certificate from @certs.
*/
PCCERT_CONTEXT
xmlSecMSCryptoX509StoreVerify(xmlSecKeyDataStorePtr store, HCERTSTORE certs,
xmlSecKeyInfoCtx* keyInfoCtx) {
PCCERT_CONTEXT cert = NULL;
xmlSecAssert2(xmlSecKeyDataStoreCheckId(store, xmlSecMSCryptoX509StoreId), NULL);
xmlSecAssert2(certs != NULL, NULL);
xmlSecAssert2(keyInfoCtx != NULL, NULL);
while((cert = CertEnumCertificatesInStore(certs, cert)) != NULL){
PCCERT_CONTEXT nextCert = NULL;
unsigned char selected = 1;
xmlSecAssert2(cert->pCertInfo != NULL, NULL);
/* if cert is the issuer of any other cert in the list, then it is
* to be skipped except a case of a celf-signed cert*/
do {
nextCert = CertFindCertificateInStore(certs,
X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
0,
CERT_FIND_ISSUER_NAME,
&(cert->pCertInfo->Subject),
nextCert);
if((nextCert != NULL) && !CertCompareCertificateName(X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
&(nextCert->pCertInfo->Subject), &(nextCert->pCertInfo->Issuer))) {
selected = 0;
}
} while((selected == 1) && (nextCert != NULL));
if(nextCert != NULL) {
CertFreeCertificateContext(nextCert);
}
if((selected == 1) && xmlSecMSCryptoX509StoreConstructCertsChain(store, cert, certs, keyInfoCtx)) {
return(cert);
}
}
return (NULL);
}
/**
* xmlSecMSCryptoX509StoreAdoptCert:
* @store: the pointer to X509 key data store klass.
* @cert: the pointer to PCCERT_CONTEXT X509 certificate.
* @type: the certificate type (trusted/untrusted).
*
* Adds trusted (root) or untrusted certificate to the store.
*
* Returns: 0 on success or a negative value if an error occurs.
*/
int
xmlSecMSCryptoX509StoreAdoptCert(xmlSecKeyDataStorePtr store, PCCERT_CONTEXT pCert, xmlSecKeyDataType type) {
xmlSecMSCryptoX509StoreCtxPtr ctx;
HCERTSTORE certStore;
xmlSecAssert2(xmlSecKeyDataStoreCheckId(store, xmlSecMSCryptoX509StoreId), -1);
xmlSecAssert2(pCert != NULL, -1);
ctx = xmlSecMSCryptoX509StoreGetCtx(store);
xmlSecAssert2(ctx != NULL, -1);
xmlSecAssert2(ctx->trusted != NULL, -1);
xmlSecAssert2(ctx->untrusted != NULL, -1);
if(type == xmlSecKeyDataTypeTrusted) {
certStore = ctx->trusted;
} else if(type == xmlSecKeyDataTypeNone) {
certStore = ctx->untrusted;
} else {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecKeyDataStoreGetName(store)),
NULL,
XMLSEC_ERRORS_R_INVALID_TYPE,
"type=%d", type);
return(-1);
}
/* TODO: The context to be added here is not duplicated first,
* hopefully this will not lead to errors when closing teh store
* and freeing the mem for all the context in the store.
*/
xmlSecAssert2(certStore != NULL, -1);
if (!CertAddCertificateContextToStore(certStore, pCert, CERT_STORE_ADD_ALWAYS, NULL)) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecKeyDataStoreGetName(store)),
"CertAddCertificateContextToStore",
XMLSEC_ERRORS_R_CRYPTO_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return(-1);
}
return(0);
}
/**
* xmlSecMSCryptoX509StoreAdoptKeyStore:
* @store: the pointer to X509 key data store klass.
* @keyStore: the pointer to keys store.
*
* Adds @keyStore to the list of key stores.
*
* Returns: 0 on success or a negative value if an error occurs.
*/
int
xmlSecMSCryptoX509StoreAdoptKeyStore (xmlSecKeyDataStorePtr store, HCERTSTORE keyStore) {
xmlSecMSCryptoX509StoreCtxPtr ctx;
xmlSecAssert2(xmlSecKeyDataStoreCheckId(store, xmlSecMSCryptoX509StoreId), -1);
xmlSecAssert2( keyStore != NULL, -1);
ctx = xmlSecMSCryptoX509StoreGetCtx(store);
xmlSecAssert2(ctx != NULL, -1);
xmlSecAssert2(ctx->trusted != NULL, -1);
if(!CertAddStoreToCollection ( ctx->trusted , keyStore , CERT_PHYSICAL_STORE_ADD_ENABLE_FLAG , 2)) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecKeyDataStoreGetName(store)),
"CertAddStoreToCollection",
XMLSEC_ERRORS_R_CRYPTO_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return(-1);
}
return(0);
}
/**
* xmlSecMSCryptoX509StoreAdoptTrustedStore:
* @store: the pointer to X509 key data store klass.
* @trustedStore: the pointer to certs store.
*
* Adds @trustedStore to the list of trusted certs stores.
*
* Returns: 0 on success or a negative value if an error occurs.
*/
int
xmlSecMSCryptoX509StoreAdoptTrustedStore (xmlSecKeyDataStorePtr store, HCERTSTORE trustedStore) {
xmlSecMSCryptoX509StoreCtxPtr ctx;
xmlSecAssert2(xmlSecKeyDataStoreCheckId(store, xmlSecMSCryptoX509StoreId), -1);
xmlSecAssert2( trustedStore != NULL, -1);
ctx = xmlSecMSCryptoX509StoreGetCtx(store);
xmlSecAssert2(ctx != NULL, -1);
xmlSecAssert2(ctx->trusted != NULL, -1);
if( !CertAddStoreToCollection ( ctx->trusted , trustedStore , CERT_PHYSICAL_STORE_ADD_ENABLE_FLAG , 3 ) ) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecKeyDataStoreGetName(store)),
"CertAddStoreToCollection",
XMLSEC_ERRORS_R_CRYPTO_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return(-1);
}
return(0);
}
/**
* xmlSecMSCryptoX509StoreAdoptUntrustedStore:
* @store: the pointer to X509 key data store klass.
* @untrustedStore: the pointer to certs store.
*
* Adds @trustedStore to the list of un-trusted certs stores.
*
* Returns: 0 on success or a negative value if an error occurs.
*/
int
xmlSecMSCryptoX509StoreAdoptUntrustedStore (xmlSecKeyDataStorePtr store, HCERTSTORE untrustedStore) {
xmlSecMSCryptoX509StoreCtxPtr ctx;
xmlSecAssert2(xmlSecKeyDataStoreCheckId(store, xmlSecMSCryptoX509StoreId), -1);
xmlSecAssert2( untrustedStore != NULL, -1);
ctx = xmlSecMSCryptoX509StoreGetCtx(store);
xmlSecAssert2(ctx != NULL, -1);
xmlSecAssert2(ctx->untrusted != NULL, -1);
if( !CertAddStoreToCollection ( ctx->untrusted , untrustedStore , CERT_PHYSICAL_STORE_ADD_ENABLE_FLAG , 2 ) ) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecKeyDataStoreGetName(store)),
"CertAddStoreToCollection",
XMLSEC_ERRORS_R_CRYPTO_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return(-1);
}
return(0);
}
/**
* xmlSecMSCryptoX509StoreEnableSystemTrustedCerts:
* @store: the pointer to X509 key data store klass.
* @val: the enable/disable flag
*
* Enables/disables the system trusted certs.
*/
void
xmlSecMSCryptoX509StoreEnableSystemTrustedCerts (xmlSecKeyDataStorePtr store, int val) {
xmlSecMSCryptoX509StoreCtxPtr ctx;
xmlSecAssert(xmlSecKeyDataStoreCheckId(store, xmlSecMSCryptoX509StoreId));
ctx = xmlSecMSCryptoX509StoreGetCtx(store);
xmlSecAssert(ctx != NULL);
xmlSecAssert(ctx->untrusted != NULL);
/* it is other way around to make default value 0 mimic old behaiviour */
ctx->dont_use_system_trusted_certs = !val;
}
static int
xmlSecMSCryptoX509StoreInitialize(xmlSecKeyDataStorePtr store) {
xmlSecMSCryptoX509StoreCtxPtr ctx;
HCERTSTORE hTrustedMemStore ;
HCERTSTORE hUntrustedMemStore ;
xmlSecAssert2(xmlSecKeyDataStoreCheckId(store, xmlSecMSCryptoX509StoreId), -1);
ctx = xmlSecMSCryptoX509StoreGetCtx(store);
xmlSecAssert2(ctx != NULL, -1);
memset(ctx, 0, sizeof(xmlSecMSCryptoX509StoreCtx));
/* create trusted certs store collection */
ctx->trusted = CertOpenStore(CERT_STORE_PROV_COLLECTION,
0,
0,
0,
NULL);
if(ctx->trusted == NULL) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecKeyDataStoreGetName(store)),
"CertOpenStore",
XMLSEC_ERRORS_R_CRYPTO_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return(-1);
}
/* create trusted certs store */
hTrustedMemStore = CertOpenStore(CERT_STORE_PROV_MEMORY,
X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
0,
CERT_STORE_CREATE_NEW_FLAG,
NULL);
if(hTrustedMemStore == NULL) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecKeyDataStoreGetName(store)),
"CertOpenStore",
XMLSEC_ERRORS_R_CRYPTO_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
CertCloseStore(ctx->trusted, CERT_CLOSE_STORE_FORCE_FLAG);
ctx->trusted = NULL ;
return(-1);
}
/* add the memory trusted certs store to trusted certs store collection */
if( !CertAddStoreToCollection( ctx->trusted, hTrustedMemStore, CERT_PHYSICAL_STORE_ADD_ENABLE_FLAG, 1 ) ) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecKeyDataStoreGetName(store)),
"CertAddStoreToCollection",
XMLSEC_ERRORS_R_CRYPTO_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
CertCloseStore(ctx->trusted, CERT_CLOSE_STORE_FORCE_FLAG);
CertCloseStore(hTrustedMemStore, CERT_CLOSE_STORE_CHECK_FLAG);
ctx->trusted = NULL ;
return(-1);
}
CertCloseStore(hTrustedMemStore, CERT_CLOSE_STORE_CHECK_FLAG);
/* create untrusted certs store collection */
ctx->untrusted = CertOpenStore(CERT_STORE_PROV_COLLECTION,
0,
0,
0,
NULL);
if(ctx->untrusted == NULL) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecKeyDataStoreGetName(store)),
"CertOpenStore",
XMLSEC_ERRORS_R_CRYPTO_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
CertCloseStore(ctx->trusted, CERT_CLOSE_STORE_FORCE_FLAG);
ctx->trusted = NULL ;
return(-1);
}
/* create untrusted certs store */
hUntrustedMemStore = CertOpenStore(CERT_STORE_PROV_MEMORY,
X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
0,
CERT_STORE_CREATE_NEW_FLAG,
NULL);
if(hUntrustedMemStore == NULL) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecKeyDataStoreGetName(store)),
"CertOpenStore",
XMLSEC_ERRORS_R_CRYPTO_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
CertCloseStore(ctx->trusted, CERT_CLOSE_STORE_FORCE_FLAG);
CertCloseStore(ctx->untrusted, CERT_CLOSE_STORE_FORCE_FLAG);
ctx->trusted = NULL ;
ctx->untrusted = NULL ;
return(-1);
}
/* add the memory trusted certs store to untrusted certs store collection */
if( !CertAddStoreToCollection( ctx->untrusted, hUntrustedMemStore, CERT_PHYSICAL_STORE_ADD_ENABLE_FLAG, 1 ) ) {
xmlSecError(XMLSEC_ERRORS_HERE,
xmlSecErrorsSafeString(xmlSecKeyDataStoreGetName(store)),
"CertAddStoreToCollection",
XMLSEC_ERRORS_R_CRYPTO_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
CertCloseStore(ctx->untrusted, CERT_CLOSE_STORE_FORCE_FLAG);
CertCloseStore(ctx->trusted, CERT_CLOSE_STORE_FORCE_FLAG);
CertCloseStore(hUntrustedMemStore, CERT_CLOSE_STORE_CHECK_FLAG);
ctx->trusted = NULL ;
ctx->untrusted = NULL ;
return(-1);
}
CertCloseStore(hUntrustedMemStore, CERT_CLOSE_STORE_CHECK_FLAG);
return(0);
}
static void
xmlSecMSCryptoX509StoreFinalize(xmlSecKeyDataStorePtr store) {
xmlSecMSCryptoX509StoreCtxPtr ctx;
xmlSecAssert(xmlSecKeyDataStoreCheckId(store, xmlSecMSCryptoX509StoreId));
ctx = xmlSecMSCryptoX509StoreGetCtx(store);
xmlSecAssert(ctx != NULL);
if (ctx->trusted) {
CertCloseStore(ctx->trusted, CERT_CLOSE_STORE_FORCE_FLAG);
}
if (ctx->untrusted) {
CertCloseStore(ctx->untrusted, CERT_CLOSE_STORE_FORCE_FLAG);
}
memset(ctx, 0, sizeof(xmlSecMSCryptoX509StoreCtx));
}
/*****************************************************************************
*
* Low-level x509 functions
*
*****************************************************************************/
/**
* xmlSecMSCryptoCertStrToName:
* @dwCertEncodingType: the encoding used.
* @pszX500: the string to convert.
* @dwStrType: the string type.
* @len: the result len.
*
* Converts input string to name by calling @CertStrToName function.
*
* Returns: a pointer to newly allocated string or NULL if an error occurs.
*/
static BYTE*
xmlSecMSCryptoCertStrToName(DWORD dwCertEncodingType, LPTSTR pszX500, DWORD dwStrType, DWORD* len) {
BYTE* str = NULL;
LPCTSTR ppszError = NULL;
xmlSecAssert2(pszX500 != NULL, NULL);
xmlSecAssert2(len != NULL, NULL);
if (!CertStrToName(dwCertEncodingType, pszX500, dwStrType,
NULL, NULL, len, &ppszError)) {
/* this might not be an error, string might just not exist */
DWORD dw = GetLastError();
return(NULL);
}
str = (BYTE *)xmlMalloc(sizeof(TCHAR) * ((*len) + 1));
if(str == NULL) {
xmlSecError(XMLSEC_ERRORS_HERE,
NULL,
NULL,
XMLSEC_ERRORS_R_MALLOC_FAILED,
"len=%ld", (*len));
return(NULL);
}
memset(str, 0, (*len) + 1);
if (!CertStrToName(dwCertEncodingType, pszX500, dwStrType,
NULL, str, len, NULL)) {
xmlSecError(XMLSEC_ERRORS_HERE,
NULL,
"CertStrToName",
XMLSEC_ERRORS_R_CRYPTO_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
xmlFree(str);
return(NULL);
}
return(str);
}
/**
* xmlSecMSCryptoX509FindCertBySubject:
* @store: the pointer to certs store
* @wcSubject: the cert subject (Unicode)
* @dwCertEncodingType: the cert encoding type
*
* Searches for a cert with given @subject in the @store
*
* Returns: cert handle on success or NULL otherwise
*/
PCCERT_CONTEXT
xmlSecMSCryptoX509FindCertBySubject(HCERTSTORE store, const LPTSTR wcSubject, DWORD dwCertEncodingType) {
PCCERT_CONTEXT res = NULL;
CERT_NAME_BLOB cnb;
BYTE* bdata;
DWORD len;
xmlSecAssert2(store != NULL, NULL);
xmlSecAssert2(wcSubject != NULL, NULL);
/* CASE 1: UTF8, DN */
if (NULL == res) {
bdata = xmlSecMSCryptoCertStrToName(dwCertEncodingType,
wcSubject,
CERT_NAME_STR_ENABLE_UTF8_UNICODE_FLAG | CERT_OID_NAME_STR,
&len);
if(bdata != NULL) {
cnb.cbData = len;
cnb.pbData = bdata;
res = CertFindCertificateInStore(store,
dwCertEncodingType,
0,
CERT_FIND_SUBJECT_NAME,
&cnb,
NULL);
xmlFree(bdata);
}
}
/* CASE 2: UTF8, REVERSE DN */
if (NULL == res) {
bdata = xmlSecMSCryptoCertStrToName(dwCertEncodingType,
wcSubject,
CERT_NAME_STR_ENABLE_UTF8_UNICODE_FLAG | CERT_OID_NAME_STR | CERT_NAME_STR_REVERSE_FLAG,
&len);
if(bdata != NULL) {
cnb.cbData = len;
cnb.pbData = bdata;
res = CertFindCertificateInStore(store,
dwCertEncodingType,
0,
CERT_FIND_SUBJECT_NAME,
&cnb,
NULL);
xmlFree(bdata);
}
}
/* CASE 3: UNICODE, DN */
if (NULL == res) {
bdata = xmlSecMSCryptoCertStrToName(dwCertEncodingType,
wcSubject,
CERT_OID_NAME_STR,
&len);
if(bdata != NULL) {
cnb.cbData = len;
cnb.pbData = bdata;
res = CertFindCertificateInStore(store,
dwCertEncodingType,
0,
CERT_FIND_SUBJECT_NAME,
&cnb,
NULL);
xmlFree(bdata);
}
}
/* CASE 4: UNICODE, REVERSE DN */
if (NULL == res) {
bdata = xmlSecMSCryptoCertStrToName(dwCertEncodingType,
wcSubject,
CERT_OID_NAME_STR | CERT_NAME_STR_REVERSE_FLAG,
&len);
if(bdata != NULL) {
cnb.cbData = len;
cnb.pbData = bdata;
res = CertFindCertificateInStore(store,
dwCertEncodingType,
0,
CERT_FIND_SUBJECT_NAME,
&cnb,
NULL);
xmlFree(bdata);
}
}
/* done */
return (res);
}
/**
* xmlSecMSCryptoX509FindCertByIssuer:
* @store: the pointer to certs store
* @wcIssuer: the cert issuer (Unicode)
* @issuerSerialBn: the cert issuer serial
* @dwCertEncodingType: the cert encoding type
*
* Searches for a cert with given @subject in the @store
*
* Returns: cert handle on success or NULL otherwise
*/
static PCCERT_CONTEXT
xmlSecMSCryptoX509FindCertByIssuer(HCERTSTORE store, const LPTSTR wcIssuer,
xmlSecBnPtr issuerSerialBn, DWORD dwCertEncodingType) {
PCCERT_CONTEXT res = NULL;
CERT_INFO certInfo;
BYTE* bdata;
DWORD len;
xmlSecAssert2(store != NULL, NULL);
xmlSecAssert2(wcIssuer != NULL, NULL);
xmlSecAssert2(issuerSerialBn != NULL, NULL);
certInfo.SerialNumber.cbData = xmlSecBnGetSize(issuerSerialBn);
certInfo.SerialNumber.pbData = xmlSecBnGetData(issuerSerialBn);
/* CASE 1: UTF8, DN */
if (NULL == res) {
bdata = xmlSecMSCryptoCertStrToName(dwCertEncodingType,
wcIssuer,
CERT_NAME_STR_ENABLE_UTF8_UNICODE_FLAG | CERT_OID_NAME_STR,
&len);
if(bdata != NULL) {
certInfo.Issuer.cbData = len;
certInfo.Issuer.pbData = bdata;
res = CertFindCertificateInStore(store,
dwCertEncodingType,
0,
CERT_FIND_SUBJECT_CERT,
&certInfo,
NULL);
xmlFree(bdata);
}
}
/* CASE 2: UTF8, REVERSE DN */
if (NULL == res) {
bdata = xmlSecMSCryptoCertStrToName(dwCertEncodingType,
wcIssuer,
CERT_NAME_STR_ENABLE_UTF8_UNICODE_FLAG | CERT_OID_NAME_STR | CERT_NAME_STR_REVERSE_FLAG,
&len);
if(bdata != NULL) {
certInfo.Issuer.cbData = len;
certInfo.Issuer.pbData = bdata;
res = CertFindCertificateInStore(store,
dwCertEncodingType,
0,
CERT_FIND_SUBJECT_CERT,
&certInfo,
NULL);
xmlFree(bdata);
}
}
/* CASE 3: UNICODE, DN */
if (NULL == res) {
bdata = xmlSecMSCryptoCertStrToName(dwCertEncodingType,
wcIssuer,
CERT_OID_NAME_STR,
&len);
if(bdata != NULL) {
certInfo.Issuer.cbData = len;
certInfo.Issuer.pbData = bdata;
res = CertFindCertificateInStore(store,
dwCertEncodingType,
0,
CERT_FIND_SUBJECT_CERT,
&certInfo,
NULL);
xmlFree(bdata);
}
}
/* CASE 4: UNICODE, REVERSE DN */
if (NULL == res) {
bdata = xmlSecMSCryptoCertStrToName(dwCertEncodingType,
wcIssuer,
CERT_OID_NAME_STR | CERT_NAME_STR_REVERSE_FLAG,
&len);
if(bdata != NULL) {
certInfo.Issuer.cbData = len;
certInfo.Issuer.pbData = bdata;
res = CertFindCertificateInStore(store,
dwCertEncodingType,
0,
CERT_FIND_SUBJECT_CERT,
&certInfo,
NULL);
xmlFree(bdata);
}
}
/* done */
return (res);
}
static LPTSTR
xmlSecMSCryptoX509GetCertName(const xmlChar * name) {
xmlChar *name2 = NULL;
xmlChar *p = NULL;
LPTSTR res = NULL;
xmlSecAssert2(name != 0, NULL);
/* MSCrypto doesn't support "emailAddress" attribute (see NSS as well).
* This code is not bullet proof and may produce incorrect results if someone has
* "emailAddress=" string in one of the fields, but it is best I can suggest to fix
* this problem.
*/
name2 = xmlStrdup(name);
if(name2 == NULL) {
xmlSecError(XMLSEC_ERRORS_HERE,
NULL,
NULL,
XMLSEC_ERRORS_R_MALLOC_FAILED,
"xmlStrlen(name)=%d",
xmlStrlen(name));
return(NULL);
}
while( (p = (xmlChar*)xmlStrstr(name2, BAD_CAST "emailAddress=")) != NULL) {
memcpy(p, " E=", 13);
}
/* get name */
res = xmlSecMSCryptoConvertUtf8ToTstr(name2);
if(res == NULL) {
xmlSecError(XMLSEC_ERRORS_HERE,
NULL,
"xmlSecMSCryptoConvertUtf8ToTstr",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
xmlFree(name2);
return(NULL);
}
/* done */
xmlFree(name2);
return(res);
}
static PCCERT_CONTEXT
xmlSecMSCryptoX509FindCert(HCERTSTORE store,
const xmlChar *subjectName,
const xmlChar *issuerName,
const xmlChar *issuerSerial,
const xmlChar *ski) {
PCCERT_CONTEXT pCert = NULL;
int ret;
xmlSecAssert2(store != 0, NULL);
if((pCert == NULL) && (NULL != subjectName)) {
LPTSTR wcSubjectName = NULL;
/* get unicode subject name */
wcSubjectName = xmlSecMSCryptoX509GetCertName(subjectName);
if(wcSubjectName == NULL) {
xmlSecError(XMLSEC_ERRORS_HERE,
NULL,
"xmlSecMSCryptoX509GetCertName",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
"wcSubjectName");
return(NULL);
}
/* search */
pCert = xmlSecMSCryptoX509FindCertBySubject(store,
wcSubjectName,
PKCS_7_ASN_ENCODING | X509_ASN_ENCODING);
/* cleanup */
xmlFree(wcSubjectName);
}
if((pCert == NULL) && (NULL != issuerName) && (NULL != issuerSerial)) {
xmlSecBn issuerSerialBn;
LPTSTR wcIssuerName = NULL;
/* get serial number */
ret = xmlSecBnInitialize(&issuerSerialBn, 0);
if(ret < 0) {
xmlSecError(XMLSEC_ERRORS_HERE,
NULL,
"xmlSecBnInitialize",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return(NULL);
}
ret = xmlSecBnFromDecString(&issuerSerialBn, issuerSerial);
if(ret < 0) {
xmlSecError(XMLSEC_ERRORS_HERE,
NULL,
"xmlSecBnInitialize",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
xmlSecBnFinalize(&issuerSerialBn);
return(NULL);
}
/* I have no clue why at a sudden a swap is needed to
* convert from lsb... This code is purely based upon
* trial and error :( WK
*/
ret = xmlSecBnReverse(&issuerSerialBn);
if(ret < 0) {
xmlSecError(XMLSEC_ERRORS_HERE,
NULL,
"xmlSecBnReverse",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
xmlSecBnFinalize(&issuerSerialBn);
return(NULL);
}
/* get issuer name */
wcIssuerName = xmlSecMSCryptoX509GetCertName(issuerName);
if(wcIssuerName == NULL) {
xmlSecError(XMLSEC_ERRORS_HERE,
NULL,
"xmlSecMSCryptoX509GetCertName",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
"wcIssuerName");
xmlSecBnFinalize(&issuerSerialBn);
return(NULL);
}
/* search */
pCert = xmlSecMSCryptoX509FindCertByIssuer(store,
wcIssuerName,
&issuerSerialBn,
X509_ASN_ENCODING | PKCS_7_ASN_ENCODING);
xmlFree(wcIssuerName);
/* cleanup */
xmlSecBnFinalize(&issuerSerialBn);
}
if((pCert == NULL) && (ski != NULL)) {
CRYPT_HASH_BLOB blob;
xmlChar* binSki;
int binSkiLen;
binSki = xmlStrdup(ski);
if(binSki == NULL) {
xmlSecError(XMLSEC_ERRORS_HERE,
NULL,
"xmlStrdup",
XMLSEC_ERRORS_R_MALLOC_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return (NULL);
}
/* trick: base64 decode "in place" */
binSkiLen = xmlSecBase64Decode(binSki, (xmlSecByte*)binSki, xmlStrlen(binSki));
if(binSkiLen < 0) {
xmlSecError(XMLSEC_ERRORS_HERE,
NULL,
"xmlSecBase64Decode",
XMLSEC_ERRORS_R_XMLSEC_FAILED,
"ski=%s",
xmlSecErrorsSafeString(ski));
xmlFree(binSki);
return(NULL);
}
blob.pbData = binSki;
blob.cbData = binSkiLen;
pCert = CertFindCertificateInStore(store,
PKCS_7_ASN_ENCODING | X509_ASN_ENCODING,
0,
CERT_FIND_KEY_IDENTIFIER,
&blob,
NULL);
xmlFree(binSki);
}
return(pCert);
}
/**
* xmlSecMSCryptoX509GetNameString:
* @pCertContext: the pointer to cert
* @dwType: the type (see CertGetNameString description in MSDN)
* @dwFlags: the flags (see CertGetNameString description in MSDN)
* @pvTypePara: the type parameter (see CertGetNameString description in MSDN)
*
* Gets the name string for certificate (see CertGetNameString description in MSDN).
*
* Returns: name string (should be freed with xmlFree) or NULL if failed.
*/
xmlChar *
xmlSecMSCryptoX509GetNameString(PCCERT_CONTEXT pCertContext, DWORD dwType, DWORD dwFlags, void *pvTypePara) {
LPTSTR name = NULL;
xmlChar * res = NULL;
DWORD dwSize;
xmlSecAssert2(pCertContext != NULL, NULL);
/* get size first */
dwSize = CertGetNameString(pCertContext, dwType, dwFlags, pvTypePara, NULL, 0);
if(dwSize <= 0) {
xmlSecError(XMLSEC_ERRORS_HERE,
"CertGetNameString",
NULL,
XMLSEC_ERRORS_R_CRYPTO_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return (NULL);
}
/* allocate buffer */
name = (LPTSTR)xmlMalloc(sizeof(TCHAR) * (dwSize + 1));
if(name == NULL) {
xmlSecError(XMLSEC_ERRORS_HERE,
NULL,
NULL,
XMLSEC_ERRORS_R_MALLOC_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
return (NULL);
}
/* actually get the name */
dwSize = CertGetNameString(pCertContext, dwType, dwFlags, pvTypePara, name, dwSize);
if(dwSize <= 0) {
xmlSecError(XMLSEC_ERRORS_HERE,
"CertGetNameString",
NULL,
XMLSEC_ERRORS_R_CRYPTO_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
xmlFree(name);
return (NULL);
}
res = xmlSecMSCryptoConvertTstrToUtf8(name);
if(res == NULL) {
xmlSecError(XMLSEC_ERRORS_HERE,
"xmlSecMSCryptoConvertTstrToUtf8",
NULL,
XMLSEC_ERRORS_R_XMLSEC_FAILED,
XMLSEC_ERRORS_NO_MESSAGE);
xmlFree(name);
return (NULL);
}
/* done */
xmlFree(name);
return (res);
}
#endif /* XMLSEC_NO_X509 */
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