Diff: DeviceBootstrap.cpp

Revision:

41:804f6a0bda26

Child:

42:104746744af8

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DeviceBootstrap.cpp	Tue Jul 15 12:44:34 2014 +0000
@@ -0,0 +1,146 @@
+#include "DeviceBootstrap.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "rtos.h"
+#include "ComposedRecord.h"
+#include "CharValue.h"
+#include "IntegerValue.h"
+#include "ParsedRecord.h"
+
+DeviceBootstrap::DeviceBootstrap(SmartRest& client, MDMSerial& mdm, DeviceInfo& deviceInfo) :
+    _client(client),
+    _mdm(mdm),
+    _deviceInfo(deviceInfo)
+{
+    *_username = *_password = '\0';
+}
+
+bool DeviceBootstrap::setUpCredentials()
+{
+    if (((*_username == '\0') || (*_password == '\0')) &&
+        (!obtainFromStorage())) {
+        if (!obtainFromPlatform())
+            return false;
+        if (!writeToStorage())
+            puts("Warning: Could not write credentials to file!");
+    }
+
+    printf("Credentials: %s : %s\n", _username, _password);
+    if (_client.setAuthorization(_username, _password) != SMARTREST_SUCCESS)
+        return false;
+    return true;
+}
+
+bool DeviceBootstrap::obtainFromStorage()
+{
+    char buf[DEVICE_BOOTSTRAP_CREDENTIALS_LENGTH*2+2], *ptr;
+
+    int res = _mdm.readFile(CREDENTIALS_FILE, buf, sizeof(buf));
+
+    if (res < 0)
+        return false;
+        
+    buf[res] = '\0';
+    if ((ptr = strchr(buf, '\n')) == NULL)
+        return false;
+    *ptr = '\0';
+    
+    ptr = buf;
+    strcpy(_username, ptr);
+    ptr += strlen(ptr)+1;
+    strcpy(_password, ptr);
+    return true;
+}
+
+bool DeviceBootstrap::obtainFromPlatform()
+{
+    uint8_t ret;
+
+    printf("Starting device bootstrap with '%s'\n", _deviceInfo.imei());
+    
+    ComposedRecord record;
+    ParsedRecord recvdRecord;
+
+    IntegerValue msgId(61);
+    CharValue identifier(_deviceInfo.imei());
+    if ((!record.add(msgId)) || (!record.add(identifier)))
+        return false;
+
+    // set authorization for bootstrap
+    if (_client.setAuthorization(DEVICE_BOOTSTRAP_USERNAME, DEVICE_BOOTSTRAP_PASSWORD) != SMARTREST_SUCCESS)
+        return false;
+
+    while (true) {
+        if (_client.send(record, "") != SMARTREST_SUCCESS) {
+            puts("Connection unsuccessful. Retrying.");
+            _client.stop();
+            Thread::wait(2000);
+            continue;
+        }
+        
+        if (_client.receive(recvdRecord) != SMARTREST_SUCCESS) {
+            puts("Receiving failure.");
+            _client.stop();
+            Thread::wait(2000);
+            continue;
+        }
+        
+        if ((recvdRecord.values() < 1) ||
+            (recvdRecord.value(0).integerValue() == 50)) {
+            puts("No credentials available yet. Retrying.");
+            Thread::wait(2000);
+            continue;
+        }
+        
+        if ((recvdRecord.value(0).integerValue() != 70) ||
+            (recvdRecord.values() != 6)) {
+            puts("Bad credentials received.");
+            return false;
+        }
+        
+        setCredentials(recvdRecord.value(3).characterValue(),
+                       recvdRecord.value(4).characterValue(),
+                       recvdRecord.value(5).characterValue());
+        
+        return true;
+    }
+    return false;
+}
+
+bool DeviceBootstrap::writeToStorage()
+{
+    char buf[DEVICE_BOOTSTRAP_CREDENTIALS_LENGTH*2+2], *ptr;
+    size_t len;
+
+    ptr = buf;
+    len = strlen(_username);
+    strcpy(ptr, _username);
+    ptr += len;
+    
+    *ptr++ = '\n';
+    len++;
+    
+    len += strlen(_password);
+    strcpy(ptr, _password);
+    
+    _mdm.delFile(CREDENTIALS_FILE);
+    _mdm.writeFile(CREDENTIALS_FILE, buf, len);
+    return true;
+}
+
+void DeviceBootstrap::setCredentials(const char *tenant, const char *username, const char *password)
+{
+    *_username = '\0';
+    if (tenant != NULL) {
+        strncpy(_username, tenant, DEVICE_BOOTSTRAP_CREDENTIALS_LENGTH);
+        _username[DEVICE_BOOTSTRAP_CREDENTIALS_LENGTH-1] = '\0';
+        if (strlen(_username)+1 < DEVICE_BOOTSTRAP_CREDENTIALS_LENGTH)
+            strcat(_username, "/");
+    }
+    strncat(_username, username, DEVICE_BOOTSTRAP_CREDENTIALS_LENGTH-strlen(_username));
+    _username[DEVICE_BOOTSTRAP_CREDENTIALS_LENGTH-1] = '\0';
+
+    strncpy(_password, password, DEVICE_BOOTSTRAP_CREDENTIALS_LENGTH);
+    _password[DEVICE_BOOTSTRAP_CREDENTIALS_LENGTH-1] = '\0';
+}