feat(endpoint): Implement wp77xx platform

This commit Implements the wp77xx platform for endpoint.
The AirPrime WP7702 LPWA module is the first verified device.

See https://www.sierrawireless.com/products-and-solutions/embedded-solutions/products/wp7702/
for more information.

The resolv.conf is removed. Change to use the system's default /etc/resolv.conf.

Close #679

Makefile

@@ -5,8 +5,6 @@ MOSQUITTO_LIB := $(MOSQUITTO_DIR)/lib/libmosquitto.so.1
 PEM_DIR = pem
 # Default pem file. See pem/README.md for more information
 PEM := $(PEM_DIR)/cert.pem
-NAMESERVER := 8.8.8.8
-RESOLV_CONF_DIR := endpoint/endpointComp
 OUTPUT_BASE_DIR := output_base
 # Endpoint build target. The default intends to the platform of your development system.
 TARGET := simulator
@@ -16,32 +14,41 @@ TESTS := false
 # The endpoint uses HTTP connection to transmit encrypted data by default.
 # See "HTTPS Connection Support" in docs/endpoint.md for more information.
 ENFORCE_EP_HTTPS := false
-# The CFLAGS to pass during endpoint app build
-ENDPOINT_CFLAGS :=
+# The flags that will be preprocessed by mkapp program, part of Legato Application Framework. 
+# Eventually, the processed flags are passed as compiler-time options.
+LEGATO_FLAGS :=
 DEPS += $(DCURL_LIB)
 
 # Determine to enable HTTPS connection
 ifeq ($(ENFORCE_EP_HTTPS), true)
-	ENDPOINT_CFLAGS += -C -DENDPOINT_HTTPS
+	LEGATO_FLAGS += -DENDPOINT_HTTPS
 endif
 
 # Determine to build test suite
 ifeq ($(TESTS), true)
-	ENDPOINT_CFLAGS += -C -DENABLE_ENDPOINT_TEST
+	LEGATO_FLAGS += -DENABLE_ENDPOINT_TEST
 endif
 
+# The tangle-acclerator host for endpoint to connect
 ifdef EP_TA_HOST
-	ENDPOINT_CFLAGS += -C -DEP_TA_HOST=${EP_TA_HOST}
+	LEGATO_FLAGS += -DEP_TA_HOST=${EP_TA_HOST}
 endif
-
+# The tangle-acclerator port for endpoint to connect
 ifdef EP_TA_PORT
-	ENDPOINT_CFLAGS += -C -DEP_TA_PORT=${EP_TA_PORT}
+	LEGATO_FLAGS += -DEP_TA_PORT=${EP_TA_PORT}
 endif
-
+# The ssl seed for endpoint (optional)
 ifdef EP_SSL_SEED
-	ENDPOINT_CFLAGS += -C -DEP_SSL_SEED=${EP_SSL_SEED}
+	LEGATO_FLAGS += -DEP_SSL_SEED=${EP_SSL_SEED}
 endif
 
+# Pass target into endpoint build process
+LEGATO_FLAGS += -DTARGET=$(TARGET)
+
+# Prepend the "-C" flag at the beginging for passing cflags into mkapp
+LEGATO_FLAGS := $(foreach flags, $(LEGATO_FLAGS), -C $(flags))
+
+# Include the build command from the specific target
 include endpoint/platform/$(TARGET)/build.mk
 
 all: $(DEPS) cert
@@ -63,8 +70,6 @@ $(MOSQUITTO_LIB): $(MOSQUITTO_DIR)
 
 # Build endpoint Legato app
 legato: cert
-	# Generate resolv.conf
-	echo "nameserver $(NAMESERVER)" > $(RESOLV_CONF_DIR)/resolv.conf
 	# Fetch the required external source code
 	# FIXME: Use 'fetch' instead of 'build' to avoid extra building actions.
 	#        The 'build' option is for getting the header file like 'mam/mam/mam_endpoint_t_set.h',

common/ta_errors.c

@@ -180,14 +180,22 @@ const char* ta_error_to_string(status_t err) {
       return "Failed to finalize the device";
     case SC_ENDPOINT_UART:
       return "UART error occurred in device component";
+    case SC_ENDPOINT_UART_SET_ATTR:
+      return "UART error occurred when setting UART attribute";
     case SC_ENDPOINT_SEC_FAULT:
       return "Error occurred inside secure storage";
     case SC_ENDPOINT_SEC_ITEM_NOT_FOUND:
       return "Item not found inside secure storage";
     case SC_ENDPOINT_SEC_UNAVAILABLE:
       return "Secure storage service is unavailable";
     case SC_ENDPOINT_SEND_TRANSFER:
-      return "Error occurred when the sending transfer message";
+      return "Error occurred when sending the transfer message";
+    case SC_ENDPOINT_GET_KEY_ERROR:
+      return "Error occurred when get private key from endpoint device";
+    case SC_ENDPOINT_GET_DEVICE_ID_ERROR:
+      return "Error occurred when get device id from endpoint device";
+    case SC_ENDPOINT_DNS_RESOLVE_ERROR:
+      return "Error occurred when resolving the domain name";
 
     default:
       return "Unknown error.";

common/ta_errors.h

@@ -237,14 +237,22 @@ typedef enum {
   /**< Failed to finalize the device */
   SC_ENDPOINT_UART = 0x03 | SC_MODULE_ENDPOINT | SC_SEVERITY_FATAL,
   /**< UART error occurred in device component */
-  SC_ENDPOINT_SEC_FAULT = 0x04 | SC_MODULE_ENDPOINT | SC_SEVERITY_MINOR,
+  SC_ENDPOINT_UART_SET_ATTR = 0x04 | SC_MODULE_ENDPOINT | SC_SEVERITY_FATAL,
+  /**< Error occurred when setting UART attribute */
+  SC_ENDPOINT_SEC_FAULT = 0x05 | SC_MODULE_ENDPOINT | SC_SEVERITY_MINOR,
   /**< Error occurred inside secure storage */
-  SC_ENDPOINT_SEC_ITEM_NOT_FOUND = 0x05 | SC_MODULE_ENDPOINT | SC_SEVERITY_MINOR,
+  SC_ENDPOINT_SEC_ITEM_NOT_FOUND = 0x06 | SC_MODULE_ENDPOINT | SC_SEVERITY_MINOR,
   /**< Item not found inside secure storage */
-  SC_ENDPOINT_SEC_UNAVAILABLE = 0x06 | SC_MODULE_ENDPOINT | SC_SEVERITY_MINOR,
+  SC_ENDPOINT_SEC_UNAVAILABLE = 0x07 | SC_MODULE_ENDPOINT | SC_SEVERITY_MINOR,
   /**< Secure storage service is unavailable */
-  SC_ENDPOINT_SEND_TRANSFER = 0x07 | SC_MODULE_ENDPOINT | SC_SEVERITY_FATAL,
-  /**< Error occurred when the sending transfer message */
+  SC_ENDPOINT_SEND_TRANSFER = 0x08 | SC_MODULE_ENDPOINT | SC_SEVERITY_FATAL,
+  /**< Error occurred when sending transfer message */
+  SC_ENDPOINT_GET_KEY_ERROR = 0x09 | SC_MODULE_ENDPOINT | SC_SEVERITY_FATAL,
+  /**< Failed to get the private key */
+  SC_ENDPOINT_GET_DEVICE_ID_ERROR = 0x0A | SC_MODULE_ENDPOINT | SC_SEVERITY_FATAL,
+  /**< Failed to get the device id */
+  SC_ENDPOINT_DNS_RESOLVE_ERROR = 0x0B | SC_MODULE_ENDPOINT | SC_SEVERITY_FATAL,
+  /**< Failed to resolve the domain name address */
 
 } status_t;
 

docs/endpoint.md

@@ -52,11 +52,15 @@ $ leaf setup legato-stable -p swi-wp77_3.0.0
 
 Finally, make the wp77xx endpoint target. Be careful with the directory of tangle-accelerator. It should be located within the workspace directory.
 
+The host-port pair and SSL seed can be set at build-time and run-time. The run-time command line option '--host', '--port' and '--ssl-seed" are added. 
+
+For setting `host`, `port` and `ssl seed` during compile-time. Add `EP_TA_HOST=xxx.xxxx.xxx`, `EP_TA_HOST=xxxx` and `EP_SSL_SEED=xxxxxxxxx` option. If you doesn't change the host and port, the default host will be set to `localhost` and default port will be set to `8000`.
+
 ```shell
 $ git clone https://github.com/DLTcollab/tangle-accelerator.git
 $ cd tangle-accelerator
-$ make TARGET=wp77xx legato # build endpoint as wp77xx target
-$ make TESTS=true TARGET=wp77xx legato # build endpoint as wp77xx target in test mode
+$ make TARGET=wp77xx EP_TA_HOST=node.deviceproof.org EP_TA_PORT=5566 legato # build endpoint as wp77xx target, and set the connected host to "node.deviceproof.org" with port 5566
+$ make TESTS=true TARGET=wp77xx EP_TA_HOST=node.deviceproof.org EP_TA_PORT=5566 legato # build endpoint as wp77xx target in test mode
 ```
 
 ### How to build endpoint application for native target

endpoint/endpoint.adef

@@ -11,4 +11,10 @@ processes:
     }
 }
 
+bindings:
+{
+    endpoint.endpointComp.le_secStore -> secStore.le_secStore
+    endpoint.endpointComp.le_sim -> modemService.le_sim
+}
+
 start: manual

endpoint/endpointComp/Component.cdef

@@ -1,6 +1,8 @@
 sources:
 {
     ${CURDIR}/../endpoint_core.c
+    ${CURDIR}/../hal/device.c
+    ${CURDIR}/../platform/wp77xx/impl.c
 
     ${CURDIR}/../../output_base/external/org_iota_common/utils/logger_helper.c
 
@@ -85,19 +87,16 @@ cflags:
     -I${CURDIR}/../../output_base/external/mbedtls_2_16_6/include
 }
 
-bundles:
-{
-    // List of files copied from the build host into the App for runtime usage
-    file:
-    {
-        resolv.conf /etc/
-    }
-}
-
 requires:
 {
     device:
     {
         [rw] /dev/ttyHS0 /dev/ttyHS0
     }
+
+    api:
+    {
+        le_secStore.api
+        modemServices/le_sim.api
+    }
 }

endpoint/endpointComp/endpoint.c

@@ -7,13 +7,16 @@
  */
 
 #include "endpoint.h"
+#include "hal/device.h"
 
 #include "common/ta_errors.h"
 #include "endpoint/endpoint_core.h"
 #include "le_test.h"
 #include "legato.h"
 #include "utils/cipher.h"
 
+#include "le_log.h"
+
 #define TEST_VALUE 0
 #define TEST_MESSAGE "THISISMSG9THISISMSG9THISISMSG"
 #define TEST_MESSAGE_FMT "ascii"
@@ -24,11 +27,7 @@
 #define TEST_NEXT_ADDRESS                                                      \
   "POWEREDBYTANGLEACCELERATOR999999999999999999999999999999999999999999999999" \
   "999999B"
-#define TEST_DEVICE_ID "470010171566423"
 
-const uint8_t test_private_key[AES_CBC_KEY_SIZE] = {82,  142, 184, 64,  74,  105, 126, 65,  154, 116, 14,
-                                                    193, 208, 41,  8,   115, 158, 252, 228, 160, 79,  5,
-                                                    167, 185, 13,  159, 135, 113, 49,  209, 58,  68};
 const uint8_t test_iv[AES_IV_SIZE] = {164, 3, 98, 193, 52, 162, 107, 252, 184, 42, 74, 225, 157, 26, 88, 72};
 
 static void print_help(void) {
@@ -104,7 +103,10 @@ COMPONENT_INIT {
   const char* tag = TEST_TAG;
   const char* address = TEST_ADDRESS;
   const char* next_address = TEST_NEXT_ADDRESS;
-  const char* device_id = TEST_DEVICE_ID;
+
+  char device_id[16] = {0};
+  const char* device_id_ptr = device_id;
+
   uint8_t private_key[AES_CBC_KEY_SIZE] = {0};
   uint8_t iv[AES_IV_SIZE] = {0};
 
@@ -120,20 +122,24 @@ COMPONENT_INIT {
   le_arg_SetFlagCallback(print_help, "h", "help");
   le_arg_Scan();
 
-  memcpy(private_key, test_private_key, AES_CBC_KEY_SIZE);
   memcpy(iv, test_iv, AES_IV_SIZE);
   srand(time(NULL));
 
+  device_t* device = ta_device(STRINGIZE(TARGET));
+  device->op->get_key(private_key);
+  device->op->get_device_id(device_id);
+
 #ifdef ENABLE_ENDPOINT_TEST
   LE_TEST_INIT;
   LE_TEST_INFO("=== ENDPOINT TEST BEGIN ===");
   LE_TEST(SC_OK == send_transaction_information(host, port, ssl_seed, value, message, message_fmt, tag, address,
-                                                next_address, private_key, device_id, iv));
+                                                next_address, private_key, device_id_ptr, iv));
   LE_TEST_EXIT;
 #else
   while (true) {
-    send_transaction_information(host, port, ssl_seed, value, message, message_fmt, tag, address, next_address,
-                                 private_key, device_id, iv);
+    status_t ret = send_transaction_information(host, port, ssl_seed, value, message, message_fmt, tag, address,
+                                                next_address, private_key, device_id_ptr, iv);
+    LE_INFO("Send transaction information return: %d", ret);
     sleep(10);
   }
 #endif

endpoint/endpoint_core.c

@@ -19,6 +19,10 @@
 #include "utils/text_serializer.h"
 #include "utils/tryte_byte_conv.h"
 
+#include <netdb.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+
 // FIXME: Same as STR() inside tests/test_defined.h
 #define STR_HELPER(num) #num
 #define STR(num) STR_HELPER(num)
@@ -69,8 +73,14 @@ status_t send_transaction_information(const char* host, const char* port, const
   char req_body[MAX_MSG_LEN] = {0};
   uint8_t ciphertext[MAX_MSG_LEN] = {0};
   uint8_t raw_msg[MAX_MSG_LEN] = {0};
+
   const char* ta_host = host ? host : STR(EP_TA_HOST);
   const char* ta_port = port ? port : STR(EP_TA_PORT);
+  char ipv4[16];
+  if (resolve_ip_address(ta_host, ipv4) != SC_OK) {
+    return SC_ENDPOINT_DNS_RESOLVE_ERROR;
+  }
+
   const char* seed = ssl_seed ? ssl_seed : STR(EP_SSL_SEED);
 
   int ret = snprintf((char*)raw_msg, MAX_MSG_LEN, "%s:%s", next_address, message);
@@ -112,10 +122,46 @@ status_t send_transaction_information(const char* host, const char* port, const
     return SC_ENDPOINT_SEND_TRANSFER;
   }
 
-  if (send_https_msg(ta_host, ta_port, SEND_TRANSACTION_API, req_body, seed) != SC_OK) {
+  if (send_https_msg(ipv4, ta_port, SEND_TRANSACTION_API, req_body, seed) != SC_OK) {
     ta_log_error("http message sending error.\n");
     return SC_ENDPOINT_SEND_TRANSFER;
   }
 
   return SC_OK;
 }
+
+status_t resolve_ip_address(const char* host, char result[16]) {
+  struct addrinfo hints;
+  struct addrinfo* res;
+
+  /* Obtain address(es) matching host */
+  memset(result, 0, 16);
+  memset(&hints, 0, sizeof(struct addrinfo));
+  hints.ai_family = AF_INET;      /* Allow IPV4 format */
+  hints.ai_socktype = SOCK_DGRAM; /* Datagram socket */
+
+  int ret = getaddrinfo(host, NULL, &hints, &res);
+  if (ret != 0) {
+    ta_log_error("Getaddrinfo returned: %s\n", gai_strerror(ret));
+    return SC_ENDPOINT_DNS_RESOLVE_ERROR;
+  }
+
+  if (res == NULL) { /* No address succeeded */
+    ta_log_error("Could not resolve host: %s\n", host);
+    return SC_ENDPOINT_DNS_RESOLVE_ERROR;
+  }
+
+  for (struct addrinfo* re = res; res != NULL; re = re->ai_next) {
+    char host_buf[1024];
+    int ret = getnameinfo(re->ai_addr, re->ai_addrlen, host_buf, sizeof(host_buf), NULL, 0, NI_NUMERICHOST);
+    if (ret == 0) {
+      snprintf(result, 16, "%s", host_buf);
+      break;
+    } else {
+      ta_log_error("Getnameinfo returned: %s\n", gai_strerror(ret));
+    }
+  }
+  freeaddrinfo(res); /* No longer needed */
+
+  return SC_OK;
+}

endpoint/endpoint_core.h

@@ -49,5 +49,13 @@ status_t send_transaction_information(const char* host, const char* port, const
                                       const char* message, const char* message_fmt, const char* tag,
                                       const char* address, const char* next_address, const uint8_t* private_key,
                                       const char* device_id, uint8_t* iv);
+/**
+ * @brief Resolve the server address name
+ *
+ * @param[in] host The domain name of the host
+ * @param[out] result The buffer to store the IPV4 address output
+ * @return #status_t
+ */
+status_t resolve_ip_address(const char* host, char result[16]);
 
 #endif  // ENDPOINT_CORE_H

endpoint/hal/device.h

@@ -27,14 +27,14 @@ extern "C" {
 typedef struct device_type device_t;
 
 struct device_operations {
-  status_t (*init)(void);               /**< initialize device */
-  void (*fini)(void);                   /**< destructor of device  */
-  status_t (*get_key)(uint8_t *);       /**< get device private key */
-  status_t (*get_device_id)(uint8_t *); /**< get device id          */
+  status_t (*init)(void);            /**< initialize device */
+  void (*fini)(void);                /**< destructor of device  */
+  status_t (*get_key)(uint8_t *);    /**< get device private key */
+  status_t (*get_device_id)(char *); /**< get device id          */
 };
 
 struct uart_operations {
-  status_t (*init)(const uint8_t *device);      /**< initialize uart */
+  status_t (*init)(const char *device);         /**< initialize uart */
   void (*write)(const int fd, const char *cmd); /**< write command to uart */
   char *(*read)(const int fd);                  /**< read from uart */
   void (*clean)(const int fd);                  /**< flush uart buffer */
@@ -51,7 +51,6 @@ struct secure_store_operations {
    *
    * @return
    * - #SC_OK on success
-   * - #RET_NO_MEMORY on no memory error
    * - #SC_ENDPOINT_SEC_UNAVAILABLE on unavailable secure storage
    * - #SC_ENDPOINT_SEC_FAULT on some other error
    */

endpoint/platform/simulator/build.mk

@@ -5,4 +5,4 @@
 # "LICENSE" at the root of this distribution.
 
 platform-build-command = \
-	cd endpoint && mkapp -v -t localhost -C -DENABLE_ENDPOINT_TEST $(ENDPOINT_CFLAGS) endpoint.adef;
+	cd endpoint && mkapp -v -t localhost -C -DENABLE_ENDPOINT_TEST $(LEGATO_FLAGS) endpoint.adef;

endpoint/platform/wp77xx/BUILD

@@ -0,0 +1,9 @@
+package(default_visibility = ["//visibility:public"])
+
+cc_library(
+    name = "wp77xx",
+    srcs = ["wp77xx.c"],
+    deps = [
+        "//endpoint/hal",
+    ],
+)

endpoint/platform/wp77xx/build.mk

@@ -5,4 +5,4 @@
 # "LICENSE" at the root of this distribution.
 
 platform-build-command = \
-	cd endpoint && leaf shell -c "mkapp -v -t wp77xx $(ENDPOINT_CFLAGS) endpoint.adef"
+	cd endpoint && leaf shell -c "mkapp -v -t wp77xx $(LEGATO_FLAGS) endpoint.adef"