Cumulocity Official / Mbed 2 deprecated MbedSmartRestMain Featured

Official reference client implementation for Cumulocity SmartREST on u-blox C027.

Dependencies:   C027_Support C12832 LM75B MMA7660 MbedSmartRest mbed-rtos mbed

Fork of MbedSmartRestMain by Vincent Wochnik

DeviceBootstrap.cpp@46:f6976fd64387, 2014-07-24 (annotated)

Committer:
Cumulocity
Date:
Thu Jul 24 16:02:47 2014 +0000
Revision:
46:f6976fd64387
Parent:
43:eff77697d88c
Child:
49:ac0ba9d54ebc
implement device credential reset; show username/password on display

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Cumulocity 41:804f6a0bda26 1 #include "DeviceBootstrap.h"
Cumulocity 41:804f6a0bda26 2 #include <stdlib.h>
Cumulocity 41:804f6a0bda26 3 #include <stdio.h>
Cumulocity 41:804f6a0bda26 4 #include <string.h>
Cumulocity 41:804f6a0bda26 5 #include "rtos.h"
Cumulocity 41:804f6a0bda26 6 #include "ComposedRecord.h"
Cumulocity 41:804f6a0bda26 7 #include "CharValue.h"
Cumulocity 41:804f6a0bda26 8 #include "IntegerValue.h"
Cumulocity 41:804f6a0bda26 9 #include "ParsedRecord.h"
Cumulocity 41:804f6a0bda26 10
Cumulocity 41:804f6a0bda26 11 DeviceBootstrap::DeviceBootstrap(SmartRest& client, MDMSerial& mdm, DeviceInfo& deviceInfo) :
Cumulocity 41:804f6a0bda26 12 _client(client),
Cumulocity 41:804f6a0bda26 13 _mdm(mdm),
Cumulocity 41:804f6a0bda26 14 _deviceInfo(deviceInfo)
Cumulocity 41:804f6a0bda26 15 {
Cumulocity 41:804f6a0bda26 16 *_username = *_password = '\0';
Cumulocity 41:804f6a0bda26 17 }
Cumulocity 41:804f6a0bda26 18
Cumulocity 41:804f6a0bda26 19 bool DeviceBootstrap::setUpCredentials()
Cumulocity 41:804f6a0bda26 20 {
Cumulocity 41:804f6a0bda26 21 if (((*_username == '\0') || (*_password == '\0')) &&
Cumulocity 41:804f6a0bda26 22 (!obtainFromStorage())) {
Cumulocity 41:804f6a0bda26 23 if (!obtainFromPlatform())
Cumulocity 41:804f6a0bda26 24 return false;
Cumulocity 41:804f6a0bda26 25 if (!writeToStorage())
Cumulocity 41:804f6a0bda26 26 puts("Warning: Could not write credentials to file!");
Cumulocity 41:804f6a0bda26 27 }
Cumulocity 41:804f6a0bda26 28
Cumulocity 41:804f6a0bda26 29 printf("Credentials: %s : %s\n", _username, _password);
Cumulocity 41:804f6a0bda26 30 if (_client.setAuthorization(_username, _password) != SMARTREST_SUCCESS)
Cumulocity 41:804f6a0bda26 31 return false;
Cumulocity 41:804f6a0bda26 32 return true;
Cumulocity 41:804f6a0bda26 33 }
Cumulocity 41:804f6a0bda26 34
Cumulocity 46:f6976fd64387 35 const char * DeviceBootstrap::username()
Cumulocity 46:f6976fd64387 36 {
Cumulocity 46:f6976fd64387 37 return _username;
Cumulocity 46:f6976fd64387 38 }
Cumulocity 46:f6976fd64387 39
Cumulocity 46:f6976fd64387 40 const char * DeviceBootstrap::password()
Cumulocity 46:f6976fd64387 41 {
Cumulocity 46:f6976fd64387 42 return _password;
Cumulocity 46:f6976fd64387 43 }
Cumulocity 46:f6976fd64387 44
Cumulocity 41:804f6a0bda26 45 bool DeviceBootstrap::obtainFromStorage()
Cumulocity 41:804f6a0bda26 46 {
Cumulocity 41:804f6a0bda26 47 char buf[DEVICE_BOOTSTRAP_CREDENTIALS_LENGTH*2+2], *ptr;
Cumulocity 42:104746744af8 48
Cumulocity 41:804f6a0bda26 49 int res = _mdm.readFile(CREDENTIALS_FILE, buf, sizeof(buf));
Cumulocity 41:804f6a0bda26 50
Cumulocity 41:804f6a0bda26 51 if (res < 0)
Cumulocity 41:804f6a0bda26 52 return false;
Cumulocity 41:804f6a0bda26 53
Cumulocity 41:804f6a0bda26 54 buf[res] = '\0';
Cumulocity 41:804f6a0bda26 55 if ((ptr = strchr(buf, '\n')) == NULL)
Cumulocity 41:804f6a0bda26 56 return false;
Cumulocity 41:804f6a0bda26 57 *ptr = '\0';
Cumulocity 41:804f6a0bda26 58
Cumulocity 41:804f6a0bda26 59 ptr = buf;
Cumulocity 41:804f6a0bda26 60 strcpy(_username, ptr);
Cumulocity 41:804f6a0bda26 61 ptr += strlen(ptr)+1;
Cumulocity 41:804f6a0bda26 62 strcpy(_password, ptr);
Cumulocity 41:804f6a0bda26 63 return true;
Cumulocity 41:804f6a0bda26 64 }
Cumulocity 41:804f6a0bda26 65
Cumulocity 41:804f6a0bda26 66 bool DeviceBootstrap::obtainFromPlatform()
Cumulocity 41:804f6a0bda26 67 {
Cumulocity 41:804f6a0bda26 68 uint8_t ret;
Cumulocity 42:104746744af8 69 const char *id;
Cumulocity 42:104746744af8 70
Cumulocity 43:eff77697d88c 71 id = _deviceInfo.imei();
Cumulocity 42:104746744af8 72 printf("Starting device bootstrap with '%s'\n", id);
Cumulocity 41:804f6a0bda26 73
Cumulocity 41:804f6a0bda26 74 ComposedRecord record;
Cumulocity 41:804f6a0bda26 75 ParsedRecord recvdRecord;
Cumulocity 41:804f6a0bda26 76
Cumulocity 41:804f6a0bda26 77 IntegerValue msgId(61);
Cumulocity 42:104746744af8 78 CharValue identifier(id);
Cumulocity 41:804f6a0bda26 79 if ((!record.add(msgId)) || (!record.add(identifier)))
Cumulocity 41:804f6a0bda26 80 return false;
Cumulocity 41:804f6a0bda26 81
Cumulocity 41:804f6a0bda26 82 // set authorization for bootstrap
Cumulocity 41:804f6a0bda26 83 if (_client.setAuthorization(DEVICE_BOOTSTRAP_USERNAME, DEVICE_BOOTSTRAP_PASSWORD) != SMARTREST_SUCCESS)
Cumulocity 41:804f6a0bda26 84 return false;
Cumulocity 41:804f6a0bda26 85
Cumulocity 41:804f6a0bda26 86 while (true) {
Cumulocity 41:804f6a0bda26 87 if (_client.send(record, "") != SMARTREST_SUCCESS) {
Cumulocity 41:804f6a0bda26 88 puts("Connection unsuccessful. Retrying.");
Cumulocity 41:804f6a0bda26 89 _client.stop();
Cumulocity 41:804f6a0bda26 90 Thread::wait(2000);
Cumulocity 41:804f6a0bda26 91 continue;
Cumulocity 41:804f6a0bda26 92 }
Cumulocity 41:804f6a0bda26 93
Cumulocity 41:804f6a0bda26 94 if (_client.receive(recvdRecord) != SMARTREST_SUCCESS) {
Cumulocity 41:804f6a0bda26 95 puts("Receiving failure.");
Cumulocity 41:804f6a0bda26 96 _client.stop();
Cumulocity 41:804f6a0bda26 97 Thread::wait(2000);
Cumulocity 41:804f6a0bda26 98 continue;
Cumulocity 41:804f6a0bda26 99 }
Cumulocity 42:104746744af8 100 _client.stop();
Cumulocity 41:804f6a0bda26 101
Cumulocity 42:104746744af8 102 for (size_t q = 0; q < recvdRecord.values(); q++)
Cumulocity 42:104746744af8 103 puts(recvdRecord.rawValue(q));
Cumulocity 42:104746744af8 104
Cumulocity 41:804f6a0bda26 105 if ((recvdRecord.values() < 1) ||
Cumulocity 41:804f6a0bda26 106 (recvdRecord.value(0).integerValue() == 50)) {
Cumulocity 41:804f6a0bda26 107 puts("No credentials available yet. Retrying.");
Cumulocity 41:804f6a0bda26 108 Thread::wait(2000);
Cumulocity 41:804f6a0bda26 109 continue;
Cumulocity 41:804f6a0bda26 110 }
Cumulocity 41:804f6a0bda26 111
Cumulocity 41:804f6a0bda26 112 if ((recvdRecord.value(0).integerValue() != 70) ||
Cumulocity 41:804f6a0bda26 113 (recvdRecord.values() != 6)) {
Cumulocity 41:804f6a0bda26 114 puts("Bad credentials received.");
Cumulocity 41:804f6a0bda26 115 return false;
Cumulocity 41:804f6a0bda26 116 }
Cumulocity 41:804f6a0bda26 117
Cumulocity 41:804f6a0bda26 118 setCredentials(recvdRecord.value(3).characterValue(),
Cumulocity 41:804f6a0bda26 119 recvdRecord.value(4).characterValue(),
Cumulocity 41:804f6a0bda26 120 recvdRecord.value(5).characterValue());
Cumulocity 41:804f6a0bda26 121
Cumulocity 41:804f6a0bda26 122 return true;
Cumulocity 41:804f6a0bda26 123 }
Cumulocity 41:804f6a0bda26 124 return false;
Cumulocity 41:804f6a0bda26 125 }
Cumulocity 41:804f6a0bda26 126
Cumulocity 41:804f6a0bda26 127 bool DeviceBootstrap::writeToStorage()
Cumulocity 41:804f6a0bda26 128 {
Cumulocity 41:804f6a0bda26 129 char buf[DEVICE_BOOTSTRAP_CREDENTIALS_LENGTH*2+2], *ptr;
Cumulocity 41:804f6a0bda26 130 size_t len;
Cumulocity 41:804f6a0bda26 131
Cumulocity 41:804f6a0bda26 132 ptr = buf;
Cumulocity 41:804f6a0bda26 133 len = strlen(_username);
Cumulocity 41:804f6a0bda26 134 strcpy(ptr, _username);
Cumulocity 41:804f6a0bda26 135 ptr += len;
Cumulocity 41:804f6a0bda26 136
Cumulocity 41:804f6a0bda26 137 *ptr++ = '\n';
Cumulocity 41:804f6a0bda26 138 len++;
Cumulocity 41:804f6a0bda26 139
Cumulocity 41:804f6a0bda26 140 len += strlen(_password);
Cumulocity 41:804f6a0bda26 141 strcpy(ptr, _password);
Cumulocity 41:804f6a0bda26 142
Cumulocity 41:804f6a0bda26 143 _mdm.delFile(CREDENTIALS_FILE);
Cumulocity 41:804f6a0bda26 144 _mdm.writeFile(CREDENTIALS_FILE, buf, len);
Cumulocity 41:804f6a0bda26 145 return true;
Cumulocity 41:804f6a0bda26 146 }
Cumulocity 41:804f6a0bda26 147
Cumulocity 41:804f6a0bda26 148 void DeviceBootstrap::setCredentials(const char *tenant, const char *username, const char *password)
Cumulocity 41:804f6a0bda26 149 {
Cumulocity 41:804f6a0bda26 150 *_username = '\0';
Cumulocity 41:804f6a0bda26 151 if (tenant != NULL) {
Cumulocity 41:804f6a0bda26 152 strncpy(_username, tenant, DEVICE_BOOTSTRAP_CREDENTIALS_LENGTH);
Cumulocity 41:804f6a0bda26 153 _username[DEVICE_BOOTSTRAP_CREDENTIALS_LENGTH-1] = '\0';
Cumulocity 41:804f6a0bda26 154 if (strlen(_username)+1 < DEVICE_BOOTSTRAP_CREDENTIALS_LENGTH)
Cumulocity 41:804f6a0bda26 155 strcat(_username, "/");
Cumulocity 41:804f6a0bda26 156 }
Cumulocity 41:804f6a0bda26 157 strncat(_username, username, DEVICE_BOOTSTRAP_CREDENTIALS_LENGTH-strlen(_username));
Cumulocity 41:804f6a0bda26 158 _username[DEVICE_BOOTSTRAP_CREDENTIALS_LENGTH-1] = '\0';
Cumulocity 41:804f6a0bda26 159
Cumulocity 41:804f6a0bda26 160 strncpy(_password, password, DEVICE_BOOTSTRAP_CREDENTIALS_LENGTH);
Cumulocity 41:804f6a0bda26 161 _password[DEVICE_BOOTSTRAP_CREDENTIALS_LENGTH-1] = '\0';
Cumulocity 41:804f6a0bda26 162 }