1 /* 2 * Copyright (C) 2023 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__ "opp_srm.c" 39 40 #include "btstack_config.h" 41 42 #include <stdint.h> 43 44 #include "btstack_event.h" 45 46 #include "classic/obex.h" 47 #include "classic/obex_parser.h" 48 #include "classic/goep_server.h" 49 50 #include "classic/obex_srm_server.h" 51 52 void obex_srm_init (obex_srm_t *obex_srm){ 53 obex_srm->srm_value = OBEX_SRM_DISABLE; 54 obex_srm->srmp_value = OBEX_SRMP_NEXT; 55 56 obex_srm->srm_state = OBEX_SRM_STATE_DISABLED; 57 } 58 59 void obex_srm_header_store (obex_srm_t *obex_srm, 60 uint8_t header_id, 61 uint16_t total_len, 62 uint16_t data_offset, 63 const uint8_t *data_buffer, 64 uint16_t data_len) 65 { 66 switch (header_id) { 67 case OBEX_HEADER_SINGLE_RESPONSE_MODE: 68 obex_parser_header_store(&obex_srm->srm_value, 1, total_len, data_offset, data_buffer, data_len); 69 break; 70 case OBEX_HEADER_SINGLE_RESPONSE_MODE_PARAMETER: 71 obex_parser_header_store(&obex_srm->srmp_value, 1, total_len, data_offset, data_buffer, data_len); 72 break; 73 default: 74 break; 75 } 76 } 77 78 static void obex_srm_handle_headers (obex_srm_t *obex_srm) 79 { 80 switch (obex_srm->srm_state) { 81 case OBEX_SRM_STATE_DISABLED: 82 if (obex_srm->srm_value == OBEX_SRM_ENABLE) { 83 if (obex_srm->srmp_value == OBEX_SRMP_WAIT) { 84 obex_srm->srm_state = OBEX_SRM_STATE_SEND_CONFIRM_WAIT; 85 } else { 86 obex_srm->srm_state = OBEX_SRM_STATE_SEND_CONFIRM; 87 } 88 } 89 break; 90 case OBEX_SRM_STATE_ENABLED_WAIT: 91 if (obex_srm->srmp_value == OBEX_SRMP_NEXT) { 92 obex_srm->srm_state = OBEX_SRM_STATE_ENABLED; 93 } 94 break; 95 default: 96 break; 97 } 98 } 99 100 void obex_srm_add_srm_headers (obex_srm_t *obex_srm, 101 uint16_t goep_cid) 102 { 103 switch (obex_srm->srm_state) { 104 case OBEX_SRM_STATE_SEND_CONFIRM: 105 goep_server_header_add_srm_enable (goep_cid); 106 obex_srm->srm_state = OBEX_SRM_STATE_ENABLED; 107 break; 108 case OBEX_SRM_STATE_SEND_CONFIRM_WAIT: 109 goep_server_header_add_srm_enable (goep_cid); 110 obex_srm->srm_state = OBEX_SRM_STATE_ENABLED_WAIT; 111 break; 112 default: 113 break; 114 } 115 } 116 117 bool obex_srm_is_enabled (obex_srm_t *obex_srm) 118 { 119 obex_srm_handle_headers (obex_srm); 120 return obex_srm->srm_state == OBEX_SRM_STATE_ENABLED; 121 } 122 123