:-'Generic Commit'

dropshell-tool/openssl-1.1.1w/crypto/x509/x_req.c

@@ -0,0 +1,68 @@
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <stdio.h>
+#include "internal/cryptlib.h"
+#include <openssl/asn1t.h>
+#include <openssl/x509.h>
+#include "crypto/x509.h"
+
+/*-
+ * X509_REQ_INFO is handled in an unusual way to get round
+ * invalid encodings. Some broken certificate requests don't
+ * encode the attributes field if it is empty. This is in
+ * violation of PKCS#10 but we need to tolerate it. We do
+ * this by making the attributes field OPTIONAL then using
+ * the callback to initialise it to an empty STACK.
+ *
+ * This means that the field will be correctly encoded unless
+ * we NULL out the field.
+ *
+ * As a result we no longer need the req_kludge field because
+ * the information is now contained in the attributes field:
+ * 1. If it is NULL then it's the invalid omission.
+ * 2. If it is empty it is the correct encoding.
+ * 3. If it is not empty then some attributes are present.
+ *
+ */
+
+static int rinf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                   void *exarg)
+{
+    X509_REQ_INFO *rinf = (X509_REQ_INFO *)*pval;
+
+    if (operation == ASN1_OP_NEW_POST) {
+        rinf->attributes = sk_X509_ATTRIBUTE_new_null();
+        if (!rinf->attributes)
+            return 0;
+    }
+    return 1;
+}
+
+ASN1_SEQUENCE_enc(X509_REQ_INFO, enc, rinf_cb) = {
+        ASN1_SIMPLE(X509_REQ_INFO, version, ASN1_INTEGER),
+        ASN1_SIMPLE(X509_REQ_INFO, subject, X509_NAME),
+        ASN1_SIMPLE(X509_REQ_INFO, pubkey, X509_PUBKEY),
+        /* This isn't really OPTIONAL but it gets round invalid
+         * encodings
+         */
+        ASN1_IMP_SET_OF_OPT(X509_REQ_INFO, attributes, X509_ATTRIBUTE, 0)
+} ASN1_SEQUENCE_END_enc(X509_REQ_INFO, X509_REQ_INFO)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_REQ_INFO)
+
+ASN1_SEQUENCE_ref(X509_REQ, 0) = {
+        ASN1_EMBED(X509_REQ, req_info, X509_REQ_INFO),
+        ASN1_EMBED(X509_REQ, sig_alg, X509_ALGOR),
+        ASN1_SIMPLE(X509_REQ, signature, ASN1_BIT_STRING)
+} ASN1_SEQUENCE_END_ref(X509_REQ, X509_REQ)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_REQ)
+
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_REQ)