le_secStore_interface.h

    1 
    2 
    3 /*
    4  * ====================== WARNING ======================
    5  *
    6  * THE CONTENTS OF THIS FILE HAVE BEEN AUTO-GENERATED.
    7  * DO NOT MODIFY IN ANY WAY.
    8  *
    9  * ====================== WARNING ======================
   10  */
   11 
   12 /**
   13  * @page c_secStore Secure Storage
   14  *
   15  * @ref le_secStore_interface.h "API Reference" <br>
   16  * @ref c_secStoreAdmin API <br>
   17  * @ref platformConstraintsSecStorage Constraints
   18  *
   19  * <HR>
   20  *
   21  * This API for accessing secure storage.
   22  *
   23  * Secure storage can be used to store sensitive information like passwords, keys, certificates,
   24  * etc. All data in the secure storage is in an encrypted format. Each app using this API only has
   25  * access to its own secure storage data.
   26  *
   27  * App's items in secure storage have a name and a value. The item name is used to access the item's
   28  * value and can be maximum 255 characters.  The item name can contain path separators, '/', to
   29  * help organize an app's data.  Item names cannot contain a trailing separator.
   30  *
   31  * To create or update an item, use le_secStore_Write() to specify the item's name and value. If the
   32  * item doesn't exist, it'll be created. Each item can be a maximum of 8192 bytes.  If it's larger,
   33  * le_secStore_Write() will fail.
   34  *
   35  * Additionally, an app's total secure storage usage is limited by the maxSecureStorageBytes setting
   36  * that may be specified in the xdef files.  The maxSecureStorageBytes default is 8192 bytes.
   37  *
   38  * Writing to secure storage may also fail if the system-wide secure storage is out of memory.  The
   39  * system-wide secure storage memory amount is platform dependent
   40  * (see @ref platformConstraintsSecStorage).
   41  *
   42  * To read an item, use le_secStore_Read(), and specify the item's name. To delete an item, use
   43  * le_secStore_Delete().
   44  *
   45  * All the functions in this API are provided by the @b secStore service.
   46  *
   47  * Here's a code sample binding to this service:
   48  * @verbatim
   49    bindings:
   50    {
   51       clientExe.clientComponent.le_secStore -> secStore.le_secStore
   52    }
   53    @endverbatim
   54  *
   55  * Whenever the secure storage is modified, a timer of 300 seconds is started. When the timer
   56  * expires, a backup is performed to capture all changes since the previous backup. If the secure
   57  * storage is not modified, then the backup is not performed.
   58  * If corruption in the secure storage is detected, a restore is performed and the target device is
   59  * rebooted.
   60  *
   61  * @section c_secStoreGlobal Global Secure Storage
   62  *
   63  * This same API also provides access to a global area that can be shared across the system.
   64  * This interface is called @c secStoreGlobal.
   65  *
   66  * Here's a code sample binding to this service:
   67  * @verbatim
   68    bindings:
   69    {
   70       clientExe.clientComponent.secStoreGlobal -> secStore.secStoreGlobal
   71    }
   72    @endverbatim
   73  *
   74  * And the following code should be used to use the API from your .cdef file:
   75  * @verbatim
   76    requires:
   77    {
   78      api:
   79 
   80      {
   81        secStoreGlobal = le_secStore.api
   82     }
   83    }
   84    @endverbatim
   85  *
   86  * <HR>
   87  *
   88  * Copyright (C) Sierra Wireless Inc.
   89  */
   90 /**
   91  * @file le_secStore_interface.h
   92  *
   93  * Legato @ref c_secStore API
   94  *
   95  * Copyright (C) Sierra Wireless Inc.
   96  */
   97 
   98 #ifndef LE_SECSTORE_INTERFACE_H_INCLUDE_GUARD
   99 #define LE_SECSTORE_INTERFACE_H_INCLUDE_GUARD
  100 
  101 
  102 #include "legato.h"
  103 
  104 // Internal includes for this interface
  105 #include "le_secStore_common.h"
  106 //--------------------------------------------------------------------------------------------------
  107 /**
  108  * Type for handler called when a server disconnects.
  109  */
  110 //--------------------------------------------------------------------------------------------------
  111 typedef void (*le_secStore_DisconnectHandler_t)(void *);
  112 
  113 //--------------------------------------------------------------------------------------------------
  114 /**
  115  *
  116  * Connect the current client thread to the service providing this API. Block until the service is
  117  * available.
  118  *
  119  * For each thread that wants to use this API, either ConnectService or TryConnectService must be
  120  * called before any other functions in this API.  Normally, ConnectService is automatically called
  121  * for the main thread, but not for any other thread. For details, see @ref apiFilesC_client.
  122  *
  123  * This function is created automatically.
  124  */
  125 //--------------------------------------------------------------------------------------------------
  126 void le_secStore_ConnectService
  127 (
  128     void
  129 );
  130 
  131 //--------------------------------------------------------------------------------------------------
  132 /**
  133  *
  134  * Try to connect the current client thread to the service providing this API. Return with an error
  135  * if the service is not available.
  136  *
  137  * For each thread that wants to use this API, either ConnectService or TryConnectService must be
  138  * called before any other functions in this API.  Normally, ConnectService is automatically called
  139  * for the main thread, but not for any other thread. For details, see @ref apiFilesC_client.
  140  *
  141  * This function is created automatically.
  142  *
  143  * @return
  144  *  - LE_OK if the client connected successfully to the service.
  145  *  - LE_UNAVAILABLE if the server is not currently offering the service to which the client is
  146  *    bound.
  147  *  - LE_NOT_PERMITTED if the client interface is not bound to any service (doesn't have a binding).
  148  *  - LE_COMM_ERROR if the Service Directory cannot be reached.
  149  */
  150 //--------------------------------------------------------------------------------------------------
  151 le_result_t le_secStore_TryConnectService
  152 (
  153     void
  154 );
  155 
  156 //--------------------------------------------------------------------------------------------------
  157 /**
  158  * Set handler called when server disconnection is detected.
  159  *
  160  * When a server connection is lost, call this handler then exit with LE_FATAL.  If a program wants
  161  * to continue without exiting, it should call longjmp() from inside the handler.
  162  */
  163 //--------------------------------------------------------------------------------------------------
  164 LE_FULL_API void le_secStore_SetServerDisconnectHandler
  165 (
  166     le_secStore_DisconnectHandler_t disconnectHandler,
  167     void *contextPtr
  168 );
  169 
  170 //--------------------------------------------------------------------------------------------------
  171 /**
  172  *
  173  * Disconnect the current client thread from the service providing this API.
  174  *
  175  * Normally, this function doesn't need to be called. After this function is called, there's no
  176  * longer a connection to the service, and the functions in this API can't be used. For details, see
  177  * @ref apiFilesC_client.
  178  *
  179  * This function is created automatically.
  180  */
  181 //--------------------------------------------------------------------------------------------------
  182 void le_secStore_DisconnectService
  183 (
  184     void
  185 );
  186 
  187 
  188 //--------------------------------------------------------------------------------------------------
  189 /**
  190  * Writes an item to secure storage. If the item already exists, it'll be overwritten with
  191  * the new value. If the item doesn't already exist, it'll be created.
  192  * If the item name is not valid or the buffer is NULL, this function will kill the calling client.
  193  *
  194  * @return
  195  *      LE_OK if successful.
  196  *      LE_NO_MEMORY if there isn't enough memory to store the item.
  197  *      LE_UNAVAILABLE if the secure storage is currently unavailable.
  198  *      LE_FAULT if there was some other error.
  199  */
  200 //--------------------------------------------------------------------------------------------------
  201 le_result_t le_secStore_Write
  202 (
  203     const char* LE_NONNULL name,
  204         ///< [IN] Name of the secure storage item.
  205     const uint8_t* bufPtr,
  206         ///< [IN] Buffer containing the data to store.
  207     size_t bufSize
  208         ///< [IN]
  209 );
  210 
  211 //--------------------------------------------------------------------------------------------------
  212 /**
  213  * Reads an item from secure storage.
  214  * If the item name is not valid or the buffer is NULL, this function will kill the calling client.
  215  *
  216  * @return
  217  *      LE_OK if successful.
  218  *      LE_OVERFLOW if the buffer is too small to hold the entire item. No data will be written to
  219  *                  the buffer in this case.
  220  *      LE_NOT_FOUND if the item doesn't exist.
  221  *      LE_UNAVAILABLE if the secure storage is currently unavailable.
  222  *      LE_FAULT if there was some other error.
  223  */
  224 //--------------------------------------------------------------------------------------------------
  225 le_result_t le_secStore_Read
  226 (
  227     const char* LE_NONNULL name,
  228         ///< [IN] Name of the secure storage item.
  229     uint8_t* bufPtr,
  230         ///< [OUT] Buffer to store the data in.
  231     size_t* bufSizePtr
  232         ///< [INOUT]
  233 );
  234 
  235 //--------------------------------------------------------------------------------------------------
  236 /**
  237  * Deletes an item from secure storage.
  238  * If the item name is not valid, this function will kill the calling client.
  239  *
  240  * @return
  241  *      LE_OK if successful.
  242  *      LE_NOT_FOUND if the item doesn't exist.
  243  *      LE_UNAVAILABLE if the secure storage is currently unavailable.
  244  *      LE_FAULT if there was some other error.
  245  */
  246 //--------------------------------------------------------------------------------------------------
  247 le_result_t le_secStore_Delete
  248 (
  249     const char* LE_NONNULL name
  250         ///< [IN] Name of the secure storage item.
  251 );
  252 
  253 #endif // LE_SECSTORE_INTERFACE_H_INCLUDE_GUARD
le_secStore_Write
le_result_t le_secStore_Write(const char *LE_NONNULL name, const uint8_t *bufPtr, size_t bufSize)
le_secStore_TryConnectService
le_result_t le_secStore_TryConnectService(void)
le_result_t
le_result_t
Definition: le_basics.h:35
le_secStore_ConnectService
void le_secStore_ConnectService(void)
le_secStore_Read
le_result_t le_secStore_Read(const char *LE_NONNULL name, uint8_t *bufPtr, size_t *bufSizePtr)
le_secStore_DisconnectHandler_t
void(* le_secStore_DisconnectHandler_t)(void *)
Definition: le_secStore_interface.h:111
le_secStore_SetServerDisconnectHandler
LE_FULL_API void le_secStore_SetServerDisconnectHandler(le_secStore_DisconnectHandler_t disconnectHandler, void *contextPtr)
LE_FULL_API
#define LE_FULL_API
Definition: le_basics.h:288
le_secStore_Delete
le_result_t le_secStore_Delete(const char *LE_NONNULL name)
le_secStore_DisconnectService
void le_secStore_DisconnectService(void)