EddystoneURLConfigService.h

00001 /* mbed Microcontroller Library
00002  * Copyright (c) 2006-2013 ARM Limited
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00017 #ifndef SERVICES_EDDYSTONECONFIGSERVICE_H_
00018 #define SERVICES_EDDYSTONECONFIGSERVICE_H_
00019 
00020 #include "ble/BLE.h"
00021 #include "mbed.h"
00022 
00023 extern const uint8_t UUID_EDDYSTONE_URL_SERVICE[UUID::LENGTH_OF_LONG_UUID];
00024 extern const uint8_t UUID_LOCK_STATE_CHAR[UUID::LENGTH_OF_LONG_UUID];
00025 extern const uint8_t UUID_LOCK_CHAR[UUID::LENGTH_OF_LONG_UUID];
00026 extern const uint8_t UUID_UNLOCK_CHAR[UUID::LENGTH_OF_LONG_UUID];
00027 extern const uint8_t UUID_URI_DATA_CHAR[UUID::LENGTH_OF_LONG_UUID];
00028 extern const uint8_t UUID_FLAGS_CHAR[UUID::LENGTH_OF_LONG_UUID];
00029 extern const uint8_t UUID_ADV_POWER_LEVELS_CHAR[UUID::LENGTH_OF_LONG_UUID];
00030 extern const uint8_t UUID_TX_POWER_MODE_CHAR[UUID::LENGTH_OF_LONG_UUID];
00031 extern const uint8_t UUID_BEACON_PERIOD_CHAR[UUID::LENGTH_OF_LONG_UUID];
00032 extern const uint8_t UUID_RESET_CHAR[UUID::LENGTH_OF_LONG_UUID];
00033 
00034 extern const uint8_t EDDYSTONE_BEACON_UUID[sizeof(UUID::ShortUUIDBytes_t)];
00035 
00036 /**
00037 * @class EddystoneURLConfigService
00038 * @brief Eddystone URL Configuration Service. Can be used to set URL, adjust power levels, and set flags.
00039 * See https://github.com/google/eddystone/tree/master/eddystone-url
00040 *
00041 */
00042 class EddystoneURLConfigService {
00043   public:
00044     /**
00045      * @brief Transmission Power Modes for Eddystone-URL beacon
00046      */
00047     static const uint8_t TX_POWER_MODE_LOWEST = 0; /*!< Lowest TX power mode */
00048     static const uint8_t TX_POWER_MODE_LOW     = 1; /*!< Low TX power mode */
00049     static const uint8_t TX_POWER_MODE_MEDIUM  = 2; /*!< Medium TX power mode */
00050     static const uint8_t TX_POWER_MODE_HIGH    = 3; /*!< High TX power mode */
00051     static const unsigned NUM_POWER_MODES      = 4; /*!< Number of Power Modes defined */
00052 
00053     static const int ADVERTISING_INTERVAL_MSEC = 1000;  // Advertising interval for config service.
00054     static const int SERVICE_DATA_MAX = 31;             // Maximum size of service data in ADV packets
00055 
00056     typedef uint8_t Lock_t[16];               /* 128 bits */
00057     typedef int8_t PowerLevels_t[NUM_POWER_MODES ];
00058 
00059     static const int URI_DATA_MAX = 18;
00060     typedef uint8_t  UriData_t[URI_DATA_MAX];
00061 
00062     struct Params_t {
00063         uint8_t       lockedState;
00064         Lock_t        lock;
00065         uint8_t       uriDataLength;
00066         UriData_t     uriData;
00067         uint8_t       flags;
00068         PowerLevels_t advPowerLevels; // Current value of AdvertisedPowerLevels
00069         uint8_t       txPowerMode;    // Firmware power levels used with setTxPower()
00070         uint16_t      beaconPeriod;
00071     };
00072 
00073     /**
00074      * @param[ref]    ble
00075      *                    BLE object for the underlying controller.
00076      * @param[in/out] paramsIn
00077      *                    Reference to application-visible beacon state, loaded
00078      *                    from persistent storage at startup.
00079      * @paramsP[in]   resetToDefaultsFlag
00080      *                    Applies to the state of the 'paramsIn' parameter.
00081      *                    If true, it indicates that paramsIn is potentially
00082      *                    un-initialized, and default values should be used
00083      *                    instead. Otherwise, paramsIn overrides the defaults.
00084      * @param[in]     defaultUriDataIn
00085      *                    Default un-encoded URI; applies only if the resetToDefaultsFlag is true.
00086      * @param[in]     defaultAdvPowerLevelsIn
00087      *                    Default power-levels array; applies only if the resetToDefaultsFlag is true.
00088      */
00089     EddystoneURLConfigService (BLE          &bleIn,
00090                            Params_t      &paramsIn,
00091                            bool          resetToDefaultsFlag,
00092                            const char   *defaultURIDataIn,
00093                            PowerLevels_t &defaultAdvPowerLevelsIn) :
00094         ble(bleIn),
00095         params(paramsIn),
00096         defaultUriDataLength(),
00097         defaultUriData(),
00098         defaultAdvPowerLevels(defaultAdvPowerLevelsIn),
00099         initSucceeded(false),
00100         resetFlag(),
00101         lockedStateChar(UUID_LOCK_STATE_CHAR, &params.lockedState),
00102         lockChar(UUID_LOCK_CHAR, &params.lock),
00103         uriDataChar(UUID_URI_DATA_CHAR, params.uriData, 0, URI_DATA_MAX,
00104                     GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE),
00105         unlockChar(UUID_UNLOCK_CHAR, &params.lock),
00106         flagsChar(UUID_FLAGS_CHAR, &params.flags),
00107         advPowerLevelsChar(UUID_ADV_POWER_LEVELS_CHAR, &params.advPowerLevels),
00108         txPowerModeChar(UUID_TX_POWER_MODE_CHAR, &params.txPowerMode),
00109         beaconPeriodChar(UUID_BEACON_PERIOD_CHAR, &params.beaconPeriod),
00110         resetChar(UUID_RESET_CHAR, &resetFlag) {
00111 
00112         encodeURI(defaultURIDataIn, defaultUriData, defaultUriDataLength);
00113         if (defaultUriDataLength > URI_DATA_MAX) {
00114             return;
00115         }
00116 
00117         if (!resetToDefaultsFlag && (params.uriDataLength > URI_DATA_MAX)) {
00118             resetToDefaultsFlag = true;
00119         }
00120         if (resetToDefaultsFlag) {
00121             resetToDefaults();
00122         } else {
00123             updateCharacteristicValues();
00124         }
00125 
00126         lockChar.setWriteAuthorizationCallback(this, &EddystoneURLConfigService::lockAuthorizationCallback);
00127         unlockChar.setWriteAuthorizationCallback(this, &EddystoneURLConfigService::unlockAuthorizationCallback);
00128         uriDataChar.setWriteAuthorizationCallback(this, &EddystoneURLConfigService::uriDataWriteAuthorizationCallback);
00129         flagsChar.setWriteAuthorizationCallback(this, &EddystoneURLConfigService::basicAuthorizationCallback<uint8_t>);
00130         advPowerLevelsChar.setWriteAuthorizationCallback(this, &EddystoneURLConfigService::basicAuthorizationCallback<PowerLevels_t>);
00131         txPowerModeChar.setWriteAuthorizationCallback(this, &EddystoneURLConfigService::powerModeAuthorizationCallback);
00132         beaconPeriodChar.setWriteAuthorizationCallback(this, &EddystoneURLConfigService::basicAuthorizationCallback<uint16_t>);
00133         resetChar.setWriteAuthorizationCallback(this, &EddystoneURLConfigService::basicAuthorizationCallback<uint8_t>);
00134 
00135         static GattCharacteristic *charTable[] = {
00136             &lockedStateChar, &lockChar, &unlockChar, &uriDataChar,
00137             &flagsChar, &advPowerLevelsChar, &txPowerModeChar, &beaconPeriodChar, &resetChar
00138         };
00139 
00140         GattService configService(UUID_EDDYSTONE_URL_SERVICE, charTable, sizeof(charTable) / sizeof(GattCharacteristic *));
00141 
00142         ble.addService(configService);
00143         ble.onDataWritten(this, &EddystoneURLConfigService::onDataWrittenCallback);
00144 
00145         setupEddystoneURLConfigAdvertisements(); /* Setup advertising for the configService. */
00146 
00147         initSucceeded = true;
00148     }
00149 
00150     bool configuredSuccessfully(void) const {
00151         return initSucceeded;
00152     }
00153 
00154     /* Start out by advertising the configService for a limited time after
00155      * startup; and switch to the normal non-connectible beacon functionality
00156      * afterwards. */
00157     void setupEddystoneURLConfigAdvertisements()
00158     {
00159         const char DEVICE_NAME[] = "mbed ES Config URL";
00160 
00161         ble.gap().clearAdvertisingPayload();
00162 
00163         ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
00164 
00165         // UUID is in different order in the ADV frame (!)
00166         uint8_t reversedServiceUUID[sizeof(UUID_EDDYSTONE_URL_SERVICE)];
00167         for (unsigned int i = 0; i < sizeof(UUID_EDDYSTONE_URL_SERVICE); i++) {
00168             reversedServiceUUID[i] = UUID_EDDYSTONE_URL_SERVICE[sizeof(UUID_EDDYSTONE_URL_SERVICE) - i - 1];
00169         }
00170         ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS, reversedServiceUUID, sizeof(reversedServiceUUID));
00171         ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_TAG);
00172         ble.gap().accumulateScanResponse(GapAdvertisingData::COMPLETE_LOCAL_NAME, reinterpret_cast<const uint8_t *>(&DEVICE_NAME), sizeof(DEVICE_NAME));
00173         ble.gap().accumulateScanResponse(GapAdvertisingData::TX_POWER_LEVEL,
00174                                          reinterpret_cast<uint8_t *>(&defaultAdvPowerLevels[EddystoneURLConfigService::TX_POWER_MODE_LOW ]),
00175                                          sizeof(uint8_t));
00176 
00177         ble.gap().setTxPower(params.advPowerLevels[params.txPowerMode]);
00178         ble.gap().setDeviceName(reinterpret_cast<const uint8_t *>(&DEVICE_NAME));
00179         ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
00180         ble.gap().setAdvertisingInterval(GapAdvertisingParams::MSEC_TO_ADVERTISEMENT_DURATION_UNITS(ADVERTISING_INTERVAL_MSEC));
00181     }
00182 
00183     /* Helper function to switch to the non-connectible normal mode for Eddystone-URL beacon. This gets called after a timeout. */
00184     void setupEddystoneURLAdvertisements()
00185     {
00186         /* Reinitialize the BLE stack. This will clear away the existing services and advertising state. */
00187         ble.shutdown();
00188         ble.init();
00189 
00190         // Fields from the Service
00191         unsigned beaconPeriod                                 = params.beaconPeriod;
00192         unsigned txPowerMode                                  = params.txPowerMode;
00193         unsigned uriDataLength                                = params.uriDataLength;
00194         EddystoneURLConfigService::UriData_t &uriData            = params.uriData;
00195         EddystoneURLConfigService::PowerLevels_t &advPowerLevels = params.advPowerLevels;
00196         uint8_t flags                                         = params.flags;
00197 
00198         extern void saveEddystoneURLConfigParams(const Params_t *paramsP); /* forward declaration; necessary to avoid a circular dependency. */
00199         saveEddystoneURLConfigParams(&params);
00200 
00201         ble.gap().clearAdvertisingPayload();
00202         ble.gap().setTxPower(params.advPowerLevels[params.txPowerMode]);
00203         ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED);
00204         ble.gap().setAdvertisingInterval(beaconPeriod);
00205         ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
00206         ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, EDDYSTONE_BEACON_UUID, sizeof(EDDYSTONE_BEACON_UUID));
00207 
00208         uint8_t serviceData[SERVICE_DATA_MAX];
00209         unsigned serviceDataLen = 0;
00210         serviceData[serviceDataLen++] = EDDYSTONE_BEACON_UUID[0];
00211         serviceData[serviceDataLen++] = EDDYSTONE_BEACON_UUID[1];
00212         serviceData[serviceDataLen++] = flags;
00213         serviceData[serviceDataLen++] = advPowerLevels[txPowerMode];
00214         for (unsigned j = 0; j < uriDataLength; j++) {
00215             serviceData[serviceDataLen++] = uriData[j];
00216         }
00217         ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::SERVICE_DATA, serviceData, serviceDataLen);
00218     }
00219 
00220   private:
00221     /*
00222      * This callback is invoked when a GATT client attempts to modify any of the
00223      * characteristics of this service. Attempts to do so are also applied to
00224      * the internal state of this service object.
00225      */
00226     void onDataWrittenCallback(const GattWriteCallbackParams *writeParams) {
00227         uint16_t handle = writeParams->handle;
00228 
00229         if (handle == lockChar.getValueHandle()) {
00230             // Validated earlier
00231             memcpy(params.lock, writeParams->data, sizeof(Lock_t));
00232             // use isLocked() in case bits are being set to all 0's
00233             params.lockedState = true;
00234         } else if (handle == unlockChar.getValueHandle()) {
00235             // Validated earlier
00236             memset(params.lock, 0, sizeof(Lock_t));
00237             params.lockedState = false;
00238         } else if (handle == uriDataChar.getValueHandle()) {
00239             params.uriDataLength = writeParams->len;
00240             memcpy(params.uriData, writeParams->data, params.uriDataLength);
00241         } else if (handle == flagsChar.getValueHandle()) {
00242             params.flags = *(writeParams->data);
00243         } else if (handle == advPowerLevelsChar.getValueHandle()) {
00244             memcpy(params.advPowerLevels, writeParams->data, sizeof(PowerLevels_t));
00245         } else if (handle == txPowerModeChar.getValueHandle()) {
00246             params.txPowerMode = *(writeParams->data);
00247         } else if (handle == beaconPeriodChar.getValueHandle()) {
00248             params.beaconPeriod = *((uint16_t *)(writeParams->data));
00249 
00250             /* Re-map beaconPeriod to within permissible bounds if necessary. */
00251             if (params.beaconPeriod != 0) {
00252                 bool paramsUpdated = false;
00253                 if (params.beaconPeriod < ble.gap().getMinAdvertisingInterval()) {
00254                     params.beaconPeriod = ble.gap().getMinAdvertisingInterval();
00255                     paramsUpdated = true;
00256                 } else if (params.beaconPeriod > ble.gap().getMaxAdvertisingInterval()) {
00257                     params.beaconPeriod = ble.gap().getMaxAdvertisingInterval();
00258                     paramsUpdated = true;
00259                 }
00260                 if (paramsUpdated) {
00261                     ble.gattServer().write(beaconPeriodChar.getValueHandle(), reinterpret_cast<uint8_t *>(&params.beaconPeriod), sizeof(uint16_t));
00262                 }
00263             }
00264         } else if (handle == resetChar.getValueHandle()) {
00265             resetToDefaults();
00266         }
00267     }
00268 
00269     /*
00270      * Reset the default values.
00271      */
00272     void resetToDefaults(void) {
00273         params.lockedState       = false;
00274         memset(params.lock, 0, sizeof(Lock_t));
00275         memcpy(params.uriData, defaultUriData, URI_DATA_MAX);
00276         params.uriDataLength    = defaultUriDataLength;
00277         params.flags            = 0x10;
00278         memcpy(params.advPowerLevels, defaultAdvPowerLevels, sizeof(PowerLevels_t));
00279         params.txPowerMode      = TX_POWER_MODE_LOW ;
00280         params.beaconPeriod     = 1000;
00281         updateCharacteristicValues();
00282     }
00283 
00284     /*
00285      * Internal helper function used to update the GATT database following any
00286      * change to the internal state of the service object.
00287      */
00288     void updateCharacteristicValues(void) {
00289         ble.gattServer().write(lockedStateChar.getValueHandle(), &params.lockedState, 1);
00290         ble.gattServer().write(uriDataChar.getValueHandle(), params.uriData, params.uriDataLength);
00291         ble.gattServer().write(flagsChar.getValueHandle(), &params.flags, 1);
00292         ble.gattServer().write(beaconPeriodChar.getValueHandle(),
00293                                       reinterpret_cast<uint8_t *>(&params.beaconPeriod), sizeof(uint16_t));
00294         ble.gattServer().write(txPowerModeChar.getValueHandle(), &params.txPowerMode, 1);
00295         ble.gattServer().write(advPowerLevelsChar.getValueHandle(),
00296                                       reinterpret_cast<uint8_t *>(params.advPowerLevels), sizeof(PowerLevels_t));
00297     }
00298 
00299 protected:
00300     void lockAuthorizationCallback(GattWriteAuthCallbackParams *authParams) {
00301         if (params.lockedState) {
00302             authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INSUF_AUTHORIZATION;
00303         } else if (authParams->len != sizeof(Lock_t)) {
00304             authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_ATT_VAL_LENGTH;
00305         } else if (authParams->offset != 0) {
00306             authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_OFFSET;
00307         } else {
00308             authParams->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS;
00309         }
00310     }
00311 
00312 
00313     void unlockAuthorizationCallback(GattWriteAuthCallbackParams *authParams) {
00314         if ((!params.lockedState) && (authParams->len == sizeof(Lock_t))) {
00315             authParams->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS;
00316         } else if (authParams->len != sizeof(Lock_t)) {
00317             authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_ATT_VAL_LENGTH;
00318         } else if (authParams->offset != 0) {
00319             authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_OFFSET;
00320         } else if (memcmp(authParams->data, params.lock, sizeof(Lock_t)) != 0) {
00321             authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INSUF_AUTHORIZATION;
00322         } else {
00323             authParams->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS;
00324         }
00325     }
00326 
00327     void uriDataWriteAuthorizationCallback(GattWriteAuthCallbackParams *authParams) {
00328         if (params.lockedState) {
00329             authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INSUF_AUTHORIZATION;
00330         } else if (authParams->offset != 0) {
00331             authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_OFFSET;
00332         } else {
00333             authParams->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS;
00334         }
00335     }
00336 
00337     void powerModeAuthorizationCallback(GattWriteAuthCallbackParams *authParams) {
00338         if (params.lockedState) {
00339             authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INSUF_AUTHORIZATION;
00340         } else if (authParams->len != sizeof(uint8_t)) {
00341             authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_ATT_VAL_LENGTH;
00342         } else if (authParams->offset != 0) {
00343             authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_OFFSET;
00344         } else if (*((uint8_t *)authParams->data) >= NUM_POWER_MODES ) {
00345             authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_WRITE_NOT_PERMITTED;
00346         } else {
00347             authParams->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS;
00348         }
00349     }
00350 
00351     template <typename T>
00352     void basicAuthorizationCallback(GattWriteAuthCallbackParams *authParams) {
00353         if (params.lockedState) {
00354             authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INSUF_AUTHORIZATION;
00355         } else if (authParams->len != sizeof(T)) {
00356             authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_ATT_VAL_LENGTH;
00357         } else if (authParams->offset != 0) {
00358             authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_OFFSET;
00359         } else {
00360             authParams->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS;
00361         }
00362     }
00363 
00364 protected:
00365     BLE           &ble;
00366     Params_t      &params;
00367 
00368     size_t        defaultUriDataLength;   // Default value that is restored on reset
00369     UriData_t     defaultUriData;         // Default value that is restored on reset
00370     PowerLevels_t &defaultAdvPowerLevels; // Default value that is restored on reset
00371 
00372     bool          initSucceeded;
00373     uint8_t       resetFlag;
00374 
00375     ReadOnlyGattCharacteristic<uint8_t>        lockedStateChar;
00376     WriteOnlyGattCharacteristic<Lock_t>        lockChar;
00377     GattCharacteristic                         uriDataChar;
00378     WriteOnlyGattCharacteristic<Lock_t>        unlockChar;
00379     ReadWriteGattCharacteristic<uint8_t>       flagsChar;
00380     ReadWriteGattCharacteristic<PowerLevels_t> advPowerLevelsChar;
00381     ReadWriteGattCharacteristic<uint8_t>       txPowerModeChar;
00382     ReadWriteGattCharacteristic<uint16_t>      beaconPeriodChar;
00383     WriteOnlyGattCharacteristic<uint8_t>       resetChar;
00384 
00385 public:
00386     /*
00387      *  Encode a human-readable URI into the binary format defined by Eddysteone URL beacon spec (https://github.com/google/eddystone/tree/master/eddystone-url.
00388      */
00389     static void encodeURI(const char *uriDataIn, UriData_t uriDataOut, size_t &sizeofURIDataOut) {
00390         const char *prefixes[] = {
00391             "http://www.",
00392             "https://www.",
00393             "http://",
00394             "https://",
00395             "urn:uuid:"
00396         };
00397         const size_t NUM_PREFIXES = sizeof(prefixes) / sizeof(char *);
00398         const char *suffixes[] = {
00399             ".com/",
00400             ".org/",
00401             ".edu/",
00402             ".net/",
00403             ".info/",
00404             ".biz/",
00405             ".gov/",
00406             ".com",
00407             ".org",
00408             ".edu",
00409             ".net",
00410             ".info",
00411             ".biz",
00412             ".gov"
00413         };
00414         const size_t NUM_SUFFIXES = sizeof(suffixes) / sizeof(char *);
00415 
00416         sizeofURIDataOut = 0;
00417         memset(uriDataOut, 0, sizeof(UriData_t));
00418 
00419         if ((uriDataIn == NULL) || (strlen(uriDataIn) == 0)) {
00420             return;
00421         }
00422 
00423         /*
00424          * handle prefix
00425          */
00426         for (unsigned i = 0; i < NUM_PREFIXES; i++) {
00427             size_t prefixLen = strlen(prefixes[i]);
00428             if (strncmp(uriDataIn, prefixes[i], prefixLen) == 0) {
00429                 uriDataOut[sizeofURIDataOut++]  = i;
00430                 uriDataIn                      += prefixLen;
00431                 break;
00432             }
00433         }
00434 
00435         /*
00436          * handle suffixes
00437          */
00438         while (*uriDataIn && (sizeofURIDataOut < URI_DATA_MAX)) {
00439             /* check for suffix match */
00440             unsigned i;
00441             for (i = 0; i < NUM_SUFFIXES; i++) {
00442                 size_t suffixLen = strlen(suffixes[i]);
00443                 if (strncmp(uriDataIn, suffixes[i], suffixLen) == 0) {
00444                     uriDataOut[sizeofURIDataOut++]  = i;
00445                     uriDataIn                      += suffixLen;
00446                     break; /* from the for loop for checking against suffixes */
00447                 }
00448             }
00449             /* This is the default case where we've got an ordinary character which doesn't match a suffix. */
00450             if (i == NUM_SUFFIXES) {
00451                 uriDataOut[sizeofURIDataOut++] = *uriDataIn;
00452                 ++uriDataIn;
00453             }
00454         }
00455     }
00456 };
00457 
00458 #endif  // SERVICES_EDDYSTONEURLCONFIGSERVICE_H_