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 MATTHIAS 24 * RINGWALD 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 #include <string.h> 39 #include <stdlib.h> 40 41 #include "rfcomm_service_db.h" 42 #include "btstack_memory.h" 43 #include "btstack_debug.h" 44 45 #include "btstack_util.h" 46 #include "btstack_linked_list.h" 47 48 // This lists should be only accessed by tests. 49 static btstack_linked_list_t db_mem_services = NULL; 50 #define MAX_NAME_LEN 30 51 typedef struct { 52 char service_name[MAX_NAME_LEN+1]; 53 int channel; 54 } db_mem_service_t; 55 56 // MARK: PERSISTENT RFCOMM CHANNEL ALLOCATION 57 uint8_t rfcomm_service_db_channel_for_service(const char *serviceName){ 58 59 btstack_linked_item_t *it; 60 db_mem_service_t * item; 61 uint8_t max_channel = 1; 62 63 for (it = (btstack_linked_item_t *) db_mem_services; it ; it = it->next){ 64 item = (db_mem_service_t *) it; 65 if (strncmp(item->service_name, serviceName, MAX_NAME_LEN) == 0) { 66 // Match found 67 return item->channel; 68 } 69 70 // TODO prevent overflow 71 if (item->channel >= max_channel) max_channel = item->channel + 1; 72 } 73 74 // Allocate new persistant channel 75 db_mem_service_t * newItem = malloc(sizeof(db_mem_service_t)); 76 77 if (!newItem) return 0; 78 79 strncpy(newItem->service_name, serviceName, MAX_NAME_LEN); 80 newItem->service_name[MAX_NAME_LEN] = 0; 81 newItem->channel = max_channel; 82 btstack_linked_list_add(&db_mem_services, (btstack_linked_item_t *) newItem); 83 return max_channel; 84 } 85