1 files changed, 128 insertions, 0 deletions
diff --git a/security/nss/lib/certdb/xauthkid.c b/security/nss/lib/certdb/xauthkid.c
new file mode 100644
index 0000000000..c7ef046db0
--- /dev/null
+++ b/security/nss/lib/certdb/xauthkid.c
@@ -0,0 +1,128 @@
+/* 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/. */
+
+/*
+ * X.509 v3 Subject Key Usage Extension
+ *
+ */
+
+#include "prtypes.h"
+#include "seccomon.h"
+#include "secdert.h"
+#include "secoidt.h"
+#include "secasn1t.h"
+#include "secasn1.h"
+#include "secport.h"
+#include "certt.h"
+#include "genname.h"
+#include "secerr.h"
+
+SEC_ASN1_MKSUB(SEC_IntegerTemplate)
+SEC_ASN1_MKSUB(SEC_OctetStringTemplate)
+
+const SEC_ASN1Template CERTAuthKeyIDTemplate[] = {
+    { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(CERTAuthKeyID) },
+    { SEC_ASN1_OPTIONAL | SEC_ASN1_CONTEXT_SPECIFIC | SEC_ASN1_XTRN | 0,
+      offsetof(CERTAuthKeyID, keyID), SEC_ASN1_SUB(SEC_OctetStringTemplate) },
+    { SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | 1,
+      offsetof(CERTAuthKeyID, DERAuthCertIssuer), CERT_GeneralNamesTemplate },
+    { SEC_ASN1_OPTIONAL | SEC_ASN1_CONTEXT_SPECIFIC | SEC_ASN1_XTRN | 2,
+      offsetof(CERTAuthKeyID, authCertSerialNumber),
+      SEC_ASN1_SUB(SEC_IntegerTemplate) },
+    { 0 }
+};
+
+SECStatus
+CERT_EncodeAuthKeyID(PLArenaPool *arena, CERTAuthKeyID *value,
+                     SECItem *encodedValue)
+{
+    SECStatus rv = SECFailure;
+
+    PORT_Assert(value);
+    PORT_Assert(arena);
+    PORT_Assert(value->DERAuthCertIssuer == NULL);
+    PORT_Assert(encodedValue);
+
+    do {
+
+        /* If both of the authCertIssuer and the serial number exist, encode
+           the name first.  Otherwise, it is an error if one exist and the other
+           is not.
+         */
+        if (value->authCertIssuer) {
+            if (!value->authCertSerialNumber.data) {
+                PORT_SetError(SEC_ERROR_EXTENSION_VALUE_INVALID);
+                break;
+            }
+
+            value->DERAuthCertIssuer =
+                cert_EncodeGeneralNames(arena, value->authCertIssuer);
+            if (!value->DERAuthCertIssuer) {
+                PORT_SetError(SEC_ERROR_EXTENSION_VALUE_INVALID);
+                break;
+            }
+        } else if (value->authCertSerialNumber.data) {
+            PORT_SetError(SEC_ERROR_EXTENSION_VALUE_INVALID);
+            break;
+        }
+
+        if (SEC_ASN1EncodeItem(arena, encodedValue, value,
+                               CERTAuthKeyIDTemplate) == NULL)
+            break;
+        rv = SECSuccess;
+
+    } while (0);
+    return (rv);
+}
+
+CERTAuthKeyID *
+CERT_DecodeAuthKeyID(PLArenaPool *arena, const SECItem *encodedValue)
+{
+    CERTAuthKeyID *value = NULL;
+    SECStatus rv = SECFailure;
+    void *mark;
+    SECItem newEncodedValue;
+
+    PORT_Assert(arena);
+
+    do {
+        mark = PORT_ArenaMark(arena);
+        value = (CERTAuthKeyID *)PORT_ArenaZAlloc(arena, sizeof(*value));
+        if (value == NULL)
+            break;
+        value->DERAuthCertIssuer = NULL;
+        /* copy the DER into the arena, since Quick DER returns data that points
+           into the DER input, which may get freed by the caller */
+        rv = SECITEM_CopyItem(arena, &newEncodedValue, encodedValue);
+        if (rv != SECSuccess) {
+            break;
+        }
+
+        rv = SEC_QuickDERDecodeItem(arena, value, CERTAuthKeyIDTemplate,
+                                    &newEncodedValue);
+        if (rv != SECSuccess)
+            break;
+
+        value->authCertIssuer =
+            cert_DecodeGeneralNames(arena, value->DERAuthCertIssuer);
+        if (value->authCertIssuer == NULL)
+            break;
+
+        /* what if the general name contains other format but not URI ?
+           hl
+         */
+        if ((value->authCertSerialNumber.data && !value->authCertIssuer) ||
+            (!value->authCertSerialNumber.data && value->authCertIssuer)) {
+            PORT_SetError(SEC_ERROR_EXTENSION_VALUE_INVALID);
+            break;
+        }
+    } while (0);
+
+    if (rv != SECSuccess) {
+        PORT_ArenaRelease(arena, mark);
+        return ((CERTAuthKeyID *)NULL);
+    }
+    PORT_ArenaUnmark(arena, mark);
+    return (value);
+}