Rene Miedema / ble_test

abc

Fork of BLE_API by Bluetooth Low Energy

services/URIBeacon2Service.h@155:a3fafce0bc0b, 2014-11-28 (annotated)

Committer:
rgrover1
Date:
Fri Nov 28 14:11:20 2014 +0000
Revision:
155:a3fafce0bc0b
Parent:
154:ab86251a3ffb
Child:
156:cc021c5ba5b8
Synchronized with git rev 2cef97c1

Author: Rohit Grover

rename to MAX_SIZEOF_SERVICE_DATA_PAYLOAD

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rgrover1 147:f772d9b93808 1 /* mbed Microcontroller Library
rgrover1 147:f772d9b93808 2 * Copyright (c) 2006-2013 ARM Limited
rgrover1 147:f772d9b93808 3 *
rgrover1 147:f772d9b93808 4 * Licensed under the Apache License, Version 2.0 (the "License");
rgrover1 147:f772d9b93808 5 * you may not use this file except in compliance with the License.
rgrover1 147:f772d9b93808 6 * You may obtain a copy of the License at
rgrover1 147:f772d9b93808 7 *
rgrover1 147:f772d9b93808 8 * http://www.apache.org/licenses/LICENSE-2.0
rgrover1 147:f772d9b93808 9 *
rgrover1 147:f772d9b93808 10 * Unless required by applicable law or agreed to in writing, software
rgrover1 147:f772d9b93808 11 * distributed under the License is distributed on an "AS IS" BASIS,
rgrover1 147:f772d9b93808 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rgrover1 147:f772d9b93808 13 * See the License for the specific language governing permissions and
rgrover1 147:f772d9b93808 14 * limitations under the License.
rgrover1 147:f772d9b93808 15 */
rgrover1 147:f772d9b93808 16
rgrover1 147:f772d9b93808 17 #ifndef __BLE_URI_BEACON_2_SERVICE_H__
rgrover1 147:f772d9b93808 18 #define __BLE_URI_BEACON_2_SERVICE_H__
rgrover1 147:f772d9b93808 19
rgrover1 147:f772d9b93808 20 #include "BLEDevice.h"
rgrover1 147:f772d9b93808 21
rgrover1 147:f772d9b93808 22 class URIBeacon2Service {
rgrover1 147:f772d9b93808 23 public:
rgrover1 147:f772d9b93808 24 // ee0c2080-8786-40ba-ab96-99b91ac981d8
rgrover1 151:cb5df770f05b 25 URIBeacon2Service(BLEDevice &ble_, const char *urldata, uint8_t flags = 0, uint8_t power = 0) : ble(ble_), payloadIndex(0), serviceDataPayload() {
rgrover1 147:f772d9b93808 26 const uint8_t BEACON_UUID[] = {0xD8, 0xFE};
rgrover1 147:f772d9b93808 27
rgrover1 151:cb5df770f05b 28 serviceDataPayload[payloadIndex++] = BEACON_UUID[0];
rgrover1 151:cb5df770f05b 29 serviceDataPayload[payloadIndex++] = BEACON_UUID[1];
rgrover1 151:cb5df770f05b 30 serviceDataPayload[payloadIndex++] = flags;
rgrover1 151:cb5df770f05b 31 serviceDataPayload[payloadIndex++] = power;
rgrover1 150:aa2d70369df0 32
rgrover1 150:aa2d70369df0 33 size_t sizeofURLData = strlen(urldata);
rgrover1 151:cb5df770f05b 34 size_t encodedBytes = encodeServiceData(urldata, sizeofURLData);
rgrover1 147:f772d9b93808 35
rgrover1 152:fc0bb2ba916b 36 ble.setTxPower(power);
rgrover1 147:f772d9b93808 37 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, BEACON_UUID, sizeof(BEACON_UUID));
rgrover1 151:cb5df770f05b 38 ble.accumulateAdvertisingPayload(GapAdvertisingData::SERVICE_DATA, serviceDataPayload, encodedBytes + 4);
rgrover1 147:f772d9b93808 39 }
rgrover1 147:f772d9b93808 40
rgrover1 151:cb5df770f05b 41 void dumpEncodedSeviceData() const {
rgrover1 150:aa2d70369df0 42 printf("encoded: '");
rgrover1 150:aa2d70369df0 43 for (unsigned i = 0; i < payloadIndex; i++) {
rgrover1 151:cb5df770f05b 44 printf(" %02x", serviceDataPayload[i]);
rgrover1 150:aa2d70369df0 45 }
rgrover1 150:aa2d70369df0 46 printf("'\r\n");
rgrover1 150:aa2d70369df0 47 }
rgrover1 150:aa2d70369df0 48
rgrover1 147:f772d9b93808 49 private:
rgrover1 151:cb5df770f05b 50 size_t encodeServiceData(const char *urldata, size_t sizeofURLData) {
rgrover1 148:0072d73e966f 51 if (sizeofURLData == 0) {
rgrover1 148:0072d73e966f 52 return 0;
rgrover1 148:0072d73e966f 53 }
rgrover1 148:0072d73e966f 54
rgrover1 151:cb5df770f05b 55 return encodeURISchemePrefix(urldata, sizeofURLData) + encodeURI(urldata, sizeofURLData);
rgrover1 149:6a7666d72a83 56 }
rgrover1 149:6a7666d72a83 57
rgrover1 151:cb5df770f05b 58 size_t encodeURISchemePrefix(const char *&urldata, size_t &sizeofURLData) {
rgrover1 148:0072d73e966f 59 const char *prefixes[] = {
rgrover1 148:0072d73e966f 60 "http://www.",
rgrover1 148:0072d73e966f 61 "https://www.",
rgrover1 148:0072d73e966f 62 "http://",
rgrover1 148:0072d73e966f 63 "https://",
rgrover1 148:0072d73e966f 64 "urn:uuid:"
rgrover1 148:0072d73e966f 65 };
rgrover1 149:6a7666d72a83 66
rgrover1 148:0072d73e966f 67 size_t encodedBytes = 0;
rgrover1 148:0072d73e966f 68 const size_t NUM_PREFIXES = sizeof(prefixes) / sizeof(char *);
rgrover1 148:0072d73e966f 69 for (unsigned i = 0; i < NUM_PREFIXES; i++) {
rgrover1 148:0072d73e966f 70 size_t prefixLen = strlen(prefixes[i]);
rgrover1 148:0072d73e966f 71 if (strncmp(urldata, prefixes[i], prefixLen) == 0) {
rgrover1 151:cb5df770f05b 72 serviceDataPayload[payloadIndex++] = i;
rgrover1 149:6a7666d72a83 73 encodedBytes = 1;
rgrover1 148:0072d73e966f 74
rgrover1 148:0072d73e966f 75 urldata += prefixLen;
rgrover1 148:0072d73e966f 76 sizeofURLData -= prefixLen;
rgrover1 148:0072d73e966f 77 break;
rgrover1 148:0072d73e966f 78 }
rgrover1 148:0072d73e966f 79 }
rgrover1 148:0072d73e966f 80
rgrover1 148:0072d73e966f 81 return encodedBytes;
rgrover1 147:f772d9b93808 82 }
rgrover1 147:f772d9b93808 83
rgrover1 151:cb5df770f05b 84 size_t encodeURI(const char *urldata, size_t sizeofURLData) {
rgrover1 150:aa2d70369df0 85 const char *suffixes[] = {
rgrover1 150:aa2d70369df0 86 ".com/",
rgrover1 150:aa2d70369df0 87 ".org/",
rgrover1 150:aa2d70369df0 88 ".edu/",
rgrover1 150:aa2d70369df0 89 ".net/",
rgrover1 150:aa2d70369df0 90 ".info/",
rgrover1 150:aa2d70369df0 91 ".biz/",
rgrover1 150:aa2d70369df0 92 ".gov/",
rgrover1 150:aa2d70369df0 93 ".com",
rgrover1 150:aa2d70369df0 94 ".org",
rgrover1 150:aa2d70369df0 95 ".edu",
rgrover1 150:aa2d70369df0 96 ".net",
rgrover1 150:aa2d70369df0 97 ".info",
rgrover1 150:aa2d70369df0 98 ".biz",
rgrover1 150:aa2d70369df0 99 ".gov"
rgrover1 150:aa2d70369df0 100 };
rgrover1 150:aa2d70369df0 101 const size_t NUM_SUFFIXES = sizeof(suffixes) / sizeof(char *);
rgrover1 150:aa2d70369df0 102
rgrover1 150:aa2d70369df0 103 size_t encodedBytes = 0;
rgrover1 155:a3fafce0bc0b 104 while (sizeofURLData && (payloadIndex < MAX_SIZEOF_SERVICE_DATA_PAYLOAD)) {
rgrover1 150:aa2d70369df0 105 /* check for suffix match */
rgrover1 150:aa2d70369df0 106 unsigned i;
rgrover1 150:aa2d70369df0 107 for (i = 0; i < NUM_SUFFIXES; i++) {
rgrover1 150:aa2d70369df0 108 size_t suffixLen = strlen(suffixes[i]);
rgrover1 150:aa2d70369df0 109 if ((suffixLen == 0) || (sizeofURLData < suffixLen)) {
rgrover1 150:aa2d70369df0 110 continue;
rgrover1 150:aa2d70369df0 111 }
rgrover1 150:aa2d70369df0 112
rgrover1 150:aa2d70369df0 113 if (strncmp(urldata, suffixes[i], suffixLen) == 0) {
rgrover1 151:cb5df770f05b 114 serviceDataPayload[payloadIndex++] = i;
rgrover1 150:aa2d70369df0 115 ++encodedBytes;
rgrover1 150:aa2d70369df0 116 urldata += suffixLen;
rgrover1 150:aa2d70369df0 117 sizeofURLData -= suffixLen;
rgrover1 150:aa2d70369df0 118 break; /* from the for loop for checking against suffixes */
rgrover1 150:aa2d70369df0 119 }
rgrover1 150:aa2d70369df0 120 }
rgrover1 150:aa2d70369df0 121 /* This is the default case where we've got an ordinary character which doesn't match a suffix. */
rgrover1 150:aa2d70369df0 122 if (i == NUM_SUFFIXES) {
rgrover1 151:cb5df770f05b 123 serviceDataPayload[payloadIndex++] = *urldata;
rgrover1 150:aa2d70369df0 124 ++encodedBytes;
rgrover1 150:aa2d70369df0 125 ++urldata;
rgrover1 150:aa2d70369df0 126 --sizeofURLData;
rgrover1 150:aa2d70369df0 127 }
rgrover1 150:aa2d70369df0 128 }
rgrover1 150:aa2d70369df0 129
rgrover1 150:aa2d70369df0 130 return encodedBytes;
rgrover1 150:aa2d70369df0 131 }
rgrover1 150:aa2d70369df0 132
rgrover1 147:f772d9b93808 133 private:
rgrover1 155:a3fafce0bc0b 134 static const size_t MAX_SIZEOF_SERVICE_DATA_PAYLOAD = 32; /* TODO */
rgrover1 147:f772d9b93808 135
rgrover1 147:f772d9b93808 136 private:
rgrover1 147:f772d9b93808 137 BLEDevice &ble;
rgrover1 148:0072d73e966f 138
rgrover1 148:0072d73e966f 139 size_t payloadIndex;
rgrover1 155:a3fafce0bc0b 140 uint8_t serviceDataPayload[MAX_SIZEOF_SERVICE_DATA_PAYLOAD];
rgrover1 147:f772d9b93808 141 };
rgrover1 147:f772d9b93808 142
rgrover1 147:f772d9b93808 143 #endif /* #ifndef __BLE_URI_BEACON_2_SERVICE_H__*/