zte's code,first commit

Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/lib/libssl/openssl-1.1.1o/crypto/x509v3/v3_bcons.c b/ap/lib/libssl/openssl-1.1.1o/crypto/x509v3/v3_bcons.c
new file mode 100644
index 0000000..3bbf155
--- /dev/null
+++ b/ap/lib/libssl/openssl-1.1.1o/crypto/x509v3/v3_bcons.c
@@ -0,0 +1,84 @@
+/*
+ * Copyright 1999-2016 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/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/conf.h>
+#include <openssl/x509v3.h>
+#include "ext_dat.h"
+
+static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
+                                                   BASIC_CONSTRAINTS *bcons,
+                                                   STACK_OF(CONF_VALUE)
+                                                   *extlist);
+static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
+                                                X509V3_CTX *ctx,
+                                                STACK_OF(CONF_VALUE) *values);
+
+const X509V3_EXT_METHOD v3_bcons = {
+    NID_basic_constraints, 0,
+    ASN1_ITEM_ref(BASIC_CONSTRAINTS),
+    0, 0, 0, 0,
+    0, 0,
+    (X509V3_EXT_I2V) i2v_BASIC_CONSTRAINTS,
+    (X509V3_EXT_V2I)v2i_BASIC_CONSTRAINTS,
+    NULL, NULL,
+    NULL
+};
+
+ASN1_SEQUENCE(BASIC_CONSTRAINTS) = {
+        ASN1_OPT(BASIC_CONSTRAINTS, ca, ASN1_FBOOLEAN),
+        ASN1_OPT(BASIC_CONSTRAINTS, pathlen, ASN1_INTEGER)
+} ASN1_SEQUENCE_END(BASIC_CONSTRAINTS)
+
+IMPLEMENT_ASN1_FUNCTIONS(BASIC_CONSTRAINTS)
+
+static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
+                                                   BASIC_CONSTRAINTS *bcons,
+                                                   STACK_OF(CONF_VALUE)
+                                                   *extlist)
+{
+    X509V3_add_value_bool("CA", bcons->ca, &extlist);
+    X509V3_add_value_int("pathlen", bcons->pathlen, &extlist);
+    return extlist;
+}
+
+static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
+                                                X509V3_CTX *ctx,
+                                                STACK_OF(CONF_VALUE) *values)
+{
+    BASIC_CONSTRAINTS *bcons = NULL;
+    CONF_VALUE *val;
+    int i;
+
+    if ((bcons = BASIC_CONSTRAINTS_new()) == NULL) {
+        X509V3err(X509V3_F_V2I_BASIC_CONSTRAINTS, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
+        val = sk_CONF_VALUE_value(values, i);
+        if (strcmp(val->name, "CA") == 0) {
+            if (!X509V3_get_value_bool(val, &bcons->ca))
+                goto err;
+        } else if (strcmp(val->name, "pathlen") == 0) {
+            if (!X509V3_get_value_int(val, &bcons->pathlen))
+                goto err;
+        } else {
+            X509V3err(X509V3_F_V2I_BASIC_CONSTRAINTS, X509V3_R_INVALID_NAME);
+            X509V3_conf_err(val);
+            goto err;
+        }
+    }
+    return bcons;
+ err:
+    BASIC_CONSTRAINTS_free(bcons);
+    return NULL;
+}