Import Mbed OS hard-float snapshot

connectivity/nanostack/sal-stack-nanostack/source/Security/PANA/pana_avp.c

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+/*
+ * Copyright (c) 2017-2018, Arm Limited and affiliates.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "nsconfig.h"
+#include "ns_types.h"
+#include "string.h"
+#include "common_functions.h"
+#include "Security/PANA/pana_avp.h"
+#ifdef PANA
+
+uint8_t *pana_avp_base_write(uint8_t avp_type, uint16_t length, uint8_t *dptr, uint16_t flags, uint32_t vendor_id)
+{
+    dptr = common_write_16_bit(avp_type, dptr); //AVP Type
+    dptr = common_write_16_bit(flags, dptr); //FLAGS
+    dptr = common_write_16_bit(length, dptr); //LEN
+    dptr = common_write_16_bit(0, dptr); //RESERVED
+    if (flags & PANA_EAP_VENDOR_FLAG) {
+        dptr = common_write_32_bit(vendor_id, dptr); //SET VENDOR
+    }
+    return dptr;
+}
+
+uint8_t *pana_avp_32_bit_write(uint8_t avp_type, uint32_t value, uint8_t *dptr)
+{
+    dptr = pana_avp_base_write(avp_type, 4, dptr, 0, 0);
+    return common_write_32_bit(value, dptr);
+}
+
+
+uint8_t *pana_avp_write_n_bytes(uint16_t avp_type, uint16_t length, const uint8_t *value, uint8_t *dptr)
+{
+    dptr = pana_avp_base_write(avp_type, length, dptr, 0, 0);
+    if (value) {
+        memcpy(dptr, value, length);
+    } else {
+        memset(dptr, 0, length);
+    }
+    dptr += length;
+    //Padding
+    while (length % 4) {
+        *dptr++ = 0;
+        length++;
+    }
+    return  dptr;
+}
+
+uint8_t *pana_avp_vendor_id_write_n_bytes(uint16_t avp_type, uint16_t length, const uint8_t *value, uint8_t *dptr, uint32_t vendor_id)
+{
+    dptr = pana_avp_base_write(avp_type, length, dptr, PANA_EAP_VENDOR_FLAG, vendor_id);
+    if (value) {
+        memcpy(dptr, value, length);
+    } else {
+        memset(dptr, 0, length);
+    }
+    dptr += length;
+
+    while (length % 4) {
+        *dptr++ = 0;
+        length++;
+    }
+    return  dptr;
+
+}
+
+bool pana_avp_discover(uint8_t *dptr, uint16_t data_len, pana_avp_t *avp)
+{
+    uint16_t avp_code;
+    uint16_t readed = 0, pana_temp_var_16 = 0;
+    avp->avp_ptr = NULL;
+    while (readed  < data_len) {
+        avp->flags = 0;
+        avp->vendor_id = 0;
+        avp_code = common_read_16_bit(dptr);
+        dptr += 2;
+        avp->flags = common_read_16_bit(dptr);
+        dptr += 2;
+        pana_temp_var_16 = common_read_16_bit(dptr);
+        if (pana_temp_var_16 == 0) {
+            return false;
+        }
+        dptr += 4; //Update pointer and Skip Reserved
+        avp->len = pana_temp_var_16;
+
+        if (avp->flags & PANA_EAP_VENDOR_FLAG) {
+            avp->vendor_id = common_read_32_bit(dptr);
+            dptr += 4;
+            readed += 4;
+        }
+        readed += 8;
+        readed += pana_temp_var_16;
+        //Set Data Start here already
+        avp->avp_ptr = dptr;
+        dptr += pana_temp_var_16;
+
+        //Check division remainder
+        while (pana_temp_var_16 % 4) {
+            dptr++;
+            readed++;
+            pana_temp_var_16++;
+        }
+
+        if (readed > data_len) {
+            avp->avp_ptr = NULL;
+            return false;
+        }
+
+        if (avp_code == avp->code) {
+            //Save AVP pointer
+            return true;
+        }
+        avp->avp_ptr = NULL;
+
+    }
+    return false;
+
+}
+#endif
+