Add toolchain and mbtk source
Change-Id: Ie12546301367ea59240bf23d5e184ad7e36e40b3
diff --git a/mbtk/mbtk_mqtt/MQTTPacket/MQTTConnectServer.c b/mbtk/mbtk_mqtt/MQTTPacket/MQTTConnectServer.c
new file mode 100755
index 0000000..7c1fe50
--- /dev/null
+++ b/mbtk/mbtk_mqtt/MQTTPacket/MQTTConnectServer.c
@@ -0,0 +1,148 @@
+/*******************************************************************************
+ * Copyright (c) 2014 IBM Corp.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * and Eclipse Distribution License v1.0 which accompany this distribution.
+ *
+ * The Eclipse Public License is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * and the Eclipse Distribution License is available at
+ * http://www.eclipse.org/org/documents/edl-v10.php.
+ *
+ * Contributors:
+ * Ian Craggs - initial API and implementation and/or initial documentation
+ *******************************************************************************/
+
+#include "StackTrace.h"
+#include "MQTTPacket.h"
+#include <string.h>
+
+#define min(a, b) ((a < b) ? a : b)
+
+
+/**
+ * Validates MQTT protocol name and version combinations
+ * @param protocol the MQTT protocol name as an MQTTString
+ * @param version the MQTT protocol version number, as in the connect packet
+ * @return correct MQTT combination? 1 is true, 0 is false
+ */
+int MQTTPacket_checkVersion(MQTTString* protocol, int version)
+{
+ int rc = 0;
+
+ if (version == 3 && memcmp(protocol->lenstring.data, "MQIsdp",
+ min(6, protocol->lenstring.len)) == 0)
+ rc = 1;
+ else if (version == 4 && memcmp(protocol->lenstring.data, "MQTT",
+ min(4, protocol->lenstring.len)) == 0)
+ rc = 1;
+ return rc;
+}
+
+
+/**
+ * Deserializes the supplied (wire) buffer into connect data structure
+ * @param data the connect data structure to be filled out
+ * @param buf the raw buffer data, of the correct length determined by the remaining length field
+ * @param len the length in bytes of the data in the supplied buffer
+ * @return error code. 1 is success, 0 is failure
+ */
+int MQTTDeserialize_connect(MQTTPacket_connectData* data, unsigned char* buf, int len)
+{
+ MQTTHeader header = {0};
+ MQTTConnectFlags flags = {0};
+ unsigned char* curdata = buf;
+ unsigned char* enddata = &buf[len];
+ int rc = 0;
+ MQTTString Protocol;
+ int version;
+ int mylen = 0;
+
+ FUNC_ENTRY;
+ header.byte = readChar(&curdata);
+ if (header.bits.type != CONNECT)
+ goto exit;
+
+ curdata += MQTTPacket_decodeBuf(curdata, &mylen); /* read remaining length */
+
+ if (!readMQTTLenString(&Protocol, &curdata, enddata) ||
+ enddata - curdata < 0) /* do we have enough data to read the protocol version byte? */
+ goto exit;
+
+ version = (int)readChar(&curdata); /* Protocol version */
+ /* If we don't recognize the protocol version, we don't parse the connect packet on the
+ * basis that we don't know what the format will be.
+ */
+ if (MQTTPacket_checkVersion(&Protocol, version))
+ {
+ flags.all = readChar(&curdata);
+ data->cleansession = flags.bits.cleansession;
+ data->keepAliveInterval = readInt(&curdata);
+ if (!readMQTTLenString(&data->clientID, &curdata, enddata))
+ goto exit;
+ data->willFlag = flags.bits.will;
+ if (flags.bits.will)
+ {
+ data->will.qos = flags.bits.willQoS;
+ data->will.retained = flags.bits.willRetain;
+ if (!readMQTTLenString(&data->will.topicName, &curdata, enddata) ||
+ !readMQTTLenString(&data->will.message, &curdata, enddata))
+ goto exit;
+ }
+ if (flags.bits.username)
+ {
+ if (enddata - curdata < 3 || !readMQTTLenString(&data->username, &curdata, enddata))
+ goto exit; /* username flag set, but no username supplied - invalid */
+ if (flags.bits.password &&
+ (enddata - curdata < 3 || !readMQTTLenString(&data->password, &curdata, enddata)))
+ goto exit; /* password flag set, but no password supplied - invalid */
+ }
+ else if (flags.bits.password)
+ goto exit; /* password flag set without username - invalid */
+ rc = 1;
+ }
+exit:
+ FUNC_EXIT_RC(rc);
+ return rc;
+}
+
+
+/**
+ * Serializes the connack packet into the supplied buffer.
+ * @param buf the buffer into which the packet will be serialized
+ * @param buflen the length in bytes of the supplied buffer
+ * @param connack_rc the integer connack return code to be used
+ * @param sessionPresent the MQTT 3.1.1 sessionPresent flag
+ * @return serialized length, or error if 0
+ */
+int MQTTSerialize_connack(unsigned char* buf, int buflen, unsigned char connack_rc, unsigned char sessionPresent)
+{
+ MQTTHeader header = {0};
+ int rc = 0;
+ unsigned char *ptr = buf;
+ MQTTConnackFlags flags = {0};
+
+ FUNC_ENTRY;
+ if (buflen < 2)
+ {
+ rc = MQTTPACKET_BUFFER_TOO_SHORT;
+ goto exit;
+ }
+ header.byte = 0;
+ header.bits.type = CONNACK;
+ writeChar(&ptr, header.byte); /* write header */
+
+ ptr += MQTTPacket_encode(ptr, 2); /* write remaining length */
+
+ flags.all = 0;
+ flags.bits.sessionpresent = sessionPresent;
+ writeChar(&ptr, flags.all);
+ writeChar(&ptr, connack_rc);
+
+ rc = ptr - buf;
+exit:
+ FUNC_EXIT_RC(rc);
+ return rc;
+}
+