mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
366 lines
8.5 KiB
C
366 lines
8.5 KiB
C
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
/*
|
|
* Code for dealing with X509.V3 extensions.
|
|
*/
|
|
|
|
#include "cert.h"
|
|
#include "secitem.h"
|
|
#include "secoid.h"
|
|
#include "secder.h"
|
|
#include "secasn1.h"
|
|
#include "certxutl.h"
|
|
#include "secerr.h"
|
|
|
|
SECStatus
|
|
CERT_FindCertExtensionByOID(CERTCertificate *cert, SECItem *oid,
|
|
SECItem *value)
|
|
{
|
|
return (cert_FindExtensionByOID (cert->extensions, oid, value));
|
|
}
|
|
|
|
|
|
SECStatus
|
|
CERT_FindCertExtension(const CERTCertificate *cert, int tag, SECItem *value)
|
|
{
|
|
return (cert_FindExtension (cert->extensions, tag, value));
|
|
}
|
|
|
|
static void
|
|
SetExts(void *object, CERTCertExtension **exts)
|
|
{
|
|
CERTCertificate *cert = (CERTCertificate *)object;
|
|
|
|
cert->extensions = exts;
|
|
DER_SetUInteger (cert->arena, &(cert->version), SEC_CERTIFICATE_VERSION_3);
|
|
}
|
|
|
|
void *
|
|
CERT_StartCertExtensions(CERTCertificate *cert)
|
|
{
|
|
return (cert_StartExtensions ((void *)cert, cert->arena, SetExts));
|
|
}
|
|
|
|
/* find the given extension in the certificate of the Issuer of 'cert' */
|
|
SECStatus
|
|
CERT_FindIssuerCertExtension(CERTCertificate *cert, int tag, SECItem *value)
|
|
{
|
|
CERTCertificate *issuercert;
|
|
SECStatus rv;
|
|
|
|
issuercert = CERT_FindCertByName(cert->dbhandle, &cert->derIssuer);
|
|
if ( issuercert ) {
|
|
rv = cert_FindExtension(issuercert->extensions, tag, value);
|
|
CERT_DestroyCertificate(issuercert);
|
|
} else {
|
|
rv = SECFailure;
|
|
}
|
|
|
|
return(rv);
|
|
}
|
|
|
|
/* find a URL extension in the cert or its CA
|
|
* apply the base URL string if it exists
|
|
*/
|
|
char *
|
|
CERT_FindCertURLExtension(CERTCertificate *cert, int tag, int catag)
|
|
{
|
|
SECStatus rv;
|
|
SECItem urlitem = {siBuffer,0};
|
|
SECItem baseitem = {siBuffer,0};
|
|
SECItem urlstringitem = {siBuffer,0};
|
|
SECItem basestringitem = {siBuffer,0};
|
|
PLArenaPool *arena = NULL;
|
|
PRBool hasbase;
|
|
char *urlstring;
|
|
char *str;
|
|
int len;
|
|
unsigned int i;
|
|
|
|
urlstring = NULL;
|
|
|
|
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
|
|
if ( ! arena ) {
|
|
goto loser;
|
|
}
|
|
|
|
hasbase = PR_FALSE;
|
|
|
|
rv = cert_FindExtension(cert->extensions, tag, &urlitem);
|
|
if ( rv == SECSuccess ) {
|
|
rv = cert_FindExtension(cert->extensions, SEC_OID_NS_CERT_EXT_BASE_URL,
|
|
&baseitem);
|
|
if ( rv == SECSuccess ) {
|
|
hasbase = PR_TRUE;
|
|
}
|
|
|
|
} else if ( catag ) {
|
|
/* if the cert doesn't have the extensions, see if the issuer does */
|
|
rv = CERT_FindIssuerCertExtension(cert, catag, &urlitem);
|
|
if ( rv != SECSuccess ) {
|
|
goto loser;
|
|
}
|
|
rv = CERT_FindIssuerCertExtension(cert, SEC_OID_NS_CERT_EXT_BASE_URL,
|
|
&baseitem);
|
|
if ( rv == SECSuccess ) {
|
|
hasbase = PR_TRUE;
|
|
}
|
|
} else {
|
|
goto loser;
|
|
}
|
|
|
|
rv = SEC_QuickDERDecodeItem(arena, &urlstringitem,
|
|
SEC_ASN1_GET(SEC_IA5StringTemplate), &urlitem);
|
|
|
|
if ( rv != SECSuccess ) {
|
|
goto loser;
|
|
}
|
|
if ( hasbase ) {
|
|
rv = SEC_QuickDERDecodeItem(arena, &basestringitem,
|
|
SEC_ASN1_GET(SEC_IA5StringTemplate),
|
|
&baseitem);
|
|
|
|
if ( rv != SECSuccess ) {
|
|
goto loser;
|
|
}
|
|
}
|
|
|
|
len = urlstringitem.len + ( hasbase ? basestringitem.len : 0 ) + 1;
|
|
|
|
str = urlstring = (char *)PORT_Alloc(len);
|
|
if ( urlstring == NULL ) {
|
|
goto loser;
|
|
}
|
|
|
|
/* copy the URL base first */
|
|
if ( hasbase ) {
|
|
|
|
/* if the urlstring has a : in it, then we assume it is an absolute
|
|
* URL, and will not get the base string pre-pended
|
|
*/
|
|
for ( i = 0; i < urlstringitem.len; i++ ) {
|
|
if ( urlstringitem.data[i] == ':' ) {
|
|
goto nobase;
|
|
}
|
|
}
|
|
|
|
PORT_Memcpy(str, basestringitem.data, basestringitem.len);
|
|
str += basestringitem.len;
|
|
|
|
}
|
|
|
|
nobase:
|
|
/* copy the rest (or all) of the URL */
|
|
PORT_Memcpy(str, urlstringitem.data, urlstringitem.len);
|
|
str += urlstringitem.len;
|
|
|
|
*str = '\0';
|
|
goto done;
|
|
|
|
loser:
|
|
if ( urlstring ) {
|
|
PORT_Free(urlstring);
|
|
}
|
|
|
|
urlstring = NULL;
|
|
done:
|
|
if ( arena ) {
|
|
PORT_FreeArena(arena, PR_FALSE);
|
|
}
|
|
if ( baseitem.data ) {
|
|
PORT_Free(baseitem.data);
|
|
}
|
|
if ( urlitem.data ) {
|
|
PORT_Free(urlitem.data);
|
|
}
|
|
|
|
return(urlstring);
|
|
}
|
|
|
|
/*
|
|
* get the value of the Netscape Certificate Type Extension
|
|
*/
|
|
SECStatus
|
|
CERT_FindNSCertTypeExtension(CERTCertificate *cert, SECItem *retItem)
|
|
{
|
|
|
|
return (CERT_FindBitStringExtension
|
|
(cert->extensions, SEC_OID_NS_CERT_EXT_CERT_TYPE, retItem));
|
|
}
|
|
|
|
|
|
/*
|
|
* get the value of a string type extension
|
|
*/
|
|
char *
|
|
CERT_FindNSStringExtension(CERTCertificate *cert, int oidtag)
|
|
{
|
|
SECItem wrapperItem, tmpItem = {siBuffer,0};
|
|
SECStatus rv;
|
|
PLArenaPool *arena = NULL;
|
|
char *retstring = NULL;
|
|
|
|
wrapperItem.data = NULL;
|
|
tmpItem.data = NULL;
|
|
|
|
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
|
|
|
|
if ( ! arena ) {
|
|
goto loser;
|
|
}
|
|
|
|
rv = cert_FindExtension(cert->extensions, oidtag,
|
|
&wrapperItem);
|
|
if ( rv != SECSuccess ) {
|
|
goto loser;
|
|
}
|
|
|
|
rv = SEC_QuickDERDecodeItem(arena, &tmpItem,
|
|
SEC_ASN1_GET(SEC_IA5StringTemplate), &wrapperItem);
|
|
|
|
if ( rv != SECSuccess ) {
|
|
goto loser;
|
|
}
|
|
|
|
retstring = (char *)PORT_Alloc(tmpItem.len + 1 );
|
|
if ( retstring == NULL ) {
|
|
goto loser;
|
|
}
|
|
|
|
PORT_Memcpy(retstring, tmpItem.data, tmpItem.len);
|
|
retstring[tmpItem.len] = '\0';
|
|
|
|
loser:
|
|
if ( arena ) {
|
|
PORT_FreeArena(arena, PR_FALSE);
|
|
}
|
|
|
|
if ( wrapperItem.data ) {
|
|
PORT_Free(wrapperItem.data);
|
|
}
|
|
|
|
return(retstring);
|
|
}
|
|
|
|
/*
|
|
* get the value of the X.509 v3 Key Usage Extension
|
|
*/
|
|
SECStatus
|
|
CERT_FindKeyUsageExtension(CERTCertificate *cert, SECItem *retItem)
|
|
{
|
|
|
|
return (CERT_FindBitStringExtension(cert->extensions,
|
|
SEC_OID_X509_KEY_USAGE, retItem));
|
|
}
|
|
|
|
/*
|
|
* get the value of the X.509 v3 Key Usage Extension
|
|
*/
|
|
SECStatus
|
|
CERT_FindSubjectKeyIDExtension(CERTCertificate *cert, SECItem *retItem)
|
|
{
|
|
|
|
SECStatus rv;
|
|
SECItem encodedValue = {siBuffer, NULL, 0 };
|
|
SECItem decodedValue = {siBuffer, NULL, 0 };
|
|
|
|
rv = cert_FindExtension
|
|
(cert->extensions, SEC_OID_X509_SUBJECT_KEY_ID, &encodedValue);
|
|
if (rv == SECSuccess) {
|
|
PLArenaPool * tmpArena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
|
|
if (tmpArena) {
|
|
rv = SEC_QuickDERDecodeItem(tmpArena, &decodedValue,
|
|
SEC_ASN1_GET(SEC_OctetStringTemplate),
|
|
&encodedValue);
|
|
if (rv == SECSuccess) {
|
|
rv = SECITEM_CopyItem(NULL, retItem, &decodedValue);
|
|
}
|
|
PORT_FreeArena(tmpArena, PR_FALSE);
|
|
} else {
|
|
rv = SECFailure;
|
|
}
|
|
}
|
|
SECITEM_FreeItem(&encodedValue, PR_FALSE);
|
|
return rv;
|
|
}
|
|
|
|
SECStatus
|
|
CERT_FindBasicConstraintExten(CERTCertificate *cert,
|
|
CERTBasicConstraints *value)
|
|
{
|
|
SECItem encodedExtenValue;
|
|
SECStatus rv;
|
|
|
|
encodedExtenValue.data = NULL;
|
|
encodedExtenValue.len = 0;
|
|
|
|
rv = cert_FindExtension(cert->extensions, SEC_OID_X509_BASIC_CONSTRAINTS,
|
|
&encodedExtenValue);
|
|
if ( rv != SECSuccess ) {
|
|
return (rv);
|
|
}
|
|
|
|
rv = CERT_DecodeBasicConstraintValue (value, &encodedExtenValue);
|
|
|
|
/* free the raw extension data */
|
|
PORT_Free(encodedExtenValue.data);
|
|
encodedExtenValue.data = NULL;
|
|
|
|
return(rv);
|
|
}
|
|
|
|
CERTAuthKeyID *
|
|
CERT_FindAuthKeyIDExten (PLArenaPool *arena, CERTCertificate *cert)
|
|
{
|
|
SECItem encodedExtenValue;
|
|
SECStatus rv;
|
|
CERTAuthKeyID *ret;
|
|
|
|
encodedExtenValue.data = NULL;
|
|
encodedExtenValue.len = 0;
|
|
|
|
rv = cert_FindExtension(cert->extensions, SEC_OID_X509_AUTH_KEY_ID,
|
|
&encodedExtenValue);
|
|
if ( rv != SECSuccess ) {
|
|
return (NULL);
|
|
}
|
|
|
|
ret = CERT_DecodeAuthKeyID (arena, &encodedExtenValue);
|
|
|
|
PORT_Free(encodedExtenValue.data);
|
|
encodedExtenValue.data = NULL;
|
|
|
|
return(ret);
|
|
}
|
|
|
|
SECStatus
|
|
CERT_CheckCertUsage(CERTCertificate *cert, unsigned char usage)
|
|
{
|
|
SECItem keyUsage;
|
|
SECStatus rv;
|
|
|
|
/* There is no extension, v1 or v2 certificate */
|
|
if (cert->extensions == NULL) {
|
|
return (SECSuccess);
|
|
}
|
|
|
|
keyUsage.data = NULL;
|
|
|
|
/* This code formerly ignored the Key Usage extension if it was
|
|
** marked non-critical. That was wrong. Since we do understand it,
|
|
** we are obligated to honor it, whether or not it is critical.
|
|
*/
|
|
rv = CERT_FindKeyUsageExtension(cert, &keyUsage);
|
|
if (rv == SECFailure) {
|
|
rv = (PORT_GetError () == SEC_ERROR_EXTENSION_NOT_FOUND) ?
|
|
SECSuccess : SECFailure;
|
|
} else if (!(keyUsage.data[0] & usage)) {
|
|
PORT_SetError (SEC_ERROR_CERT_USAGES_INVALID);
|
|
rv = SECFailure;
|
|
}
|
|
PORT_Free (keyUsage.data);
|
|
return (rv);
|
|
}
|