memory storage for remote device db as proposed by Simon

src/remote_device_db_memory.c

@@ -0,0 +1,178 @@
+/*
+ * Copyright (C) 2010 by Matthias Ringwald
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holders nor the names of
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY MATTHIAS RINGWALD AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
+ * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+#include "remote_device_db.h"
+#include "debug.h"
+
+#include <btstack/linked_list.h>
+#include <btstack/utils.h>
+
+#define MAX_NAME_LEN 32
+
+linked_list_t db_mem_devices;
+linked_list_t db_mem_services;
+
+typedef struct {
+    // linked list - assert: first field
+    linked_item_t    item;
+
+    // Device's BD_ADDR
+    bd_addr_t bd_addr;
+
+    // Link Key
+    link_key_t link_key;
+
+    // Device's Name, with maximum length
+    char device_name[MAX_NAME_LEN];
+
+} db_mem_devices_t;
+
+// Device info
+static void db_open(){
+}
+
+static void db_close(){ 
+}
+
+static int get_link_key(bd_addr_t *bd_addr, link_key_t *link_key) {
+    linked_item_t *it;
+    for (it = (linked_item_t *) db_mem_devices; it ; it = it->next){
+        db_mem_devices_t * item = (db_mem_devices_t *) it;
+        print_bd_addr(item->bd_addr);
+        if (cmp_bd_addr(item->bd_addr, *bd_addr)) {
+            memcpy(link_key, item->link_key, LINK_KEY_LEN);
+            print_bd_addr(link_key);
+            return 1;
+        }
+    }
+    return 0;
+}
+
+static void put_link_key(bd_addr_t *bd_addr, link_key_t *link_key){
+    linked_item_t *it;
+    for (it = (linked_item_t *) db_mem_devices; it ; it = it->next){
+        db_mem_devices_t * item = (db_mem_devices_t *) it;
+        if (item->bd_addr == *bd_addr){
+            memcpy(item->link_key, link_key, LINK_KEY_LEN);
+            return;
+        }
+    }
+
+    // Record not found, create new one for this device
+    db_mem_devices_t * newItem = (db_mem_devices_t *) malloc(sizeof(db_mem_devices_t));
+
+    if (newItem) {
+        memcpy(newItem->bd_addr, bd_addr, sizeof(bd_addr_t));
+        strncpy(newItem->device_name, "", MAX_NAME_LEN);
+        memcpy(newItem->link_key, link_key, LINK_KEY_LEN);
+	linked_list_add(&db_mem_devices, (linked_item_t *) newItem);
+    }
+}
+
+static void delete_link_key(bd_addr_t *bd_addr){
+    linked_item_t *it;
+    for (it = (linked_item_t *) db_mem_devices; it ; it = it->next){
+        db_mem_devices_t * item = (db_mem_devices_t *) it;
+        if (item->bd_addr == *bd_addr){
+            // Found record, delete it
+            linked_list_remove(&db_mem_devices, (linked_item_t *) item);
+            free(item);
+            return;
+        }
+    }
+}
+
+static void put_name(bd_addr_t *bd_addr, device_name_t *device_name){
+    linked_item_t *it;
+    for (it = (linked_item_t *) db_mem_devices; it ; it = it->next){
+        db_mem_devices_t * item = (db_mem_devices_t *) it;
+        if (item->bd_addr == *bd_addr){
+            // Found record, ammend it
+            strncpy(item->device_name, device_name, MAX_NAME_LEN);
+            return;
+        }
+    }
+
+    // Record not found, create a new one for this device
+    db_mem_devices_t * newItem = (db_mem_devices_t *) malloc(sizeof(db_mem_devices_t));
+
+    if (newItem) {
+        memcpy(newItem->bd_addr, bd_addr, sizeof(bd_addr_t));
+        strncpy(newItem->device_name, device_name, MAX_NAME_LEN);
+        memset(newItem->link_key, 0, LINK_KEY_LEN);
+
+	linked_list_add(&db_mem_devices, (linked_item_t *) newItem);
+    }
+}
+
+static void delete_name(bd_addr_t *bd_addr){
+    linked_item_t *it;
+    for (it = (linked_item_t *) db_mem_devices; it ; it = it->next){
+        db_mem_devices_t * item = (db_mem_devices_t *) it;
+        if (item->bd_addr == *bd_addr){
+            // Found record, delete it
+            linked_list_remove(&db_mem_devices, (linked_item_t *) item);
+            free(item);
+            return;
+        }
+    }
+}
+
+static int  get_name(bd_addr_t *bd_addr, device_name_t *device_name) {
+    linked_item_t *it;
+    for (it = (linked_item_t *) db_mem_devices; it ; it = it->next){
+        db_mem_devices_t * item = (db_mem_devices_t *) it;
+        if (item->bd_addr == *bd_addr){
+            strncpy(device_name, item->device_name, MAX_NAME_LEN);
+            return 1;
+        }
+    }
+    return 0;
+}
+
+#pragma mark PERSISTENT RFCOMM CHANNEL ALLOCATION
+
+static uint8_t persistent_rfcomm_channel(char *serviceName){
+    // Fake
+    return 1;
+}
+
+
+remote_device_db_t remote_device_db_memory = {
+    db_open,
+    db_close,
+    get_link_key,
+    put_link_key,
+    delete_link_key,
+    get_name,
+    put_name,
+    delete_name,
+    persistent_rfcomm_channel
+};