1 /*
2 * Copyright (C) 2014 BlueKitchen GmbH
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the copyright holders nor the names of
14 * contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 * 4. Any redistribution, use, or modification is done solely for
17 * personal benefit and not for any commercial purpose or for
18 * monetary gain.
19 *
20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN
24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * Please inquire about commercial licensing options at
34 * [email protected]
35 *
36 */
37
38 #define BTSTACK_FILE__ "rfcomm_service_db_memory.c"
39
40 #include <string.h>
41 #include <stdlib.h>
42
43 #include "rfcomm_service_db.h"
44 #include "btstack_memory.h"
45 #include "btstack_debug.h"
46
47 #include "btstack_util.h"
48 #include "btstack_linked_list.h"
49
50 // This lists should be only accessed by tests.
51 static btstack_linked_list_t db_mem_services = NULL;
52 #define MAX_NAME_LEN 30
53 typedef struct {
54 char service_name[MAX_NAME_LEN+1];
55 int channel;
56 } db_mem_service_t;
57
58 // MARK: PERSISTENT RFCOMM CHANNEL ALLOCATION
rfcomm_service_db_channel_for_service(const char * serviceName)59 uint8_t rfcomm_service_db_channel_for_service(const char *serviceName){
60
61 btstack_linked_item_t *it;
62 db_mem_service_t * item;
63 uint8_t max_channel = 1;
64
65 for (it = (btstack_linked_item_t *) db_mem_services; it ; it = it->next){
66 item = (db_mem_service_t *) it;
67 if (strncmp(item->service_name, serviceName, MAX_NAME_LEN) == 0) {
68 // Match found
69 return item->channel;
70 }
71
72 // TODO prevent overflow
73 if (item->channel >= max_channel) max_channel = item->channel + 1;
74 }
75
76 // Allocate new persistant channel
77 db_mem_service_t * newItem = malloc(sizeof(db_mem_service_t));
78
79 if (!newItem) return 0;
80
81 memset(newItem, 0, sizeof(db_mem_service_t));
82 strncpy(newItem->service_name, serviceName, MAX_NAME_LEN);
83 newItem->service_name[MAX_NAME_LEN] = 0;
84 newItem->channel = max_channel;
85 btstack_linked_list_add(&db_mem_services, (btstack_linked_item_t *) newItem);
86 return max_channel;
87 }
88