1 /* 2 * Copyright (C) 2014-2020 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 #define BTSTACK_FILE__ "hci_dump_posix_fs.c" 39 40 /* 41 * hci_dump_posix_fs.c 42 * 43 * Dump HCI trace in various formats into a file: 44 * 45 * - BlueZ's hcidump format 46 * - Apple's PacketLogger 47 * - stdout hexdump 48 * 49 */ 50 51 #include "btstack_config.h" 52 53 // enable POSIX functions (needed for -std=c99) 54 #define _POSIX_C_SOURCE 200809 55 56 #include "hci_dump_posix_fs.h" 57 58 #include "btstack_debug.h" 59 #include "hci_cmd.h" 60 61 #include <time.h> 62 #include <stdio.h> // printf 63 #include <fcntl.h> // open 64 #include <unistd.h> // write 65 #include <errno.h> // errno 66 #include <sys/time.h> // for timestamps 67 #include <sys/stat.h> // file modes 68 69 static int dump_file = -1; 70 static int dump_format; 71 static char log_message_buffer[256]; 72 73 static void hci_dump_posix_fs_reset(void){ 74 btstack_assert(dump_file >= 0); 75 (void) lseek(dump_file, 0, SEEK_SET); 76 (void) ftruncate(dump_file, 0); 77 } 78 79 static void hci_dump_posix_fs_log_packet(uint8_t packet_type, uint8_t in, uint8_t *packet, uint16_t len) { 80 if (dump_file < 0) return; 81 82 static union { 83 uint8_t header_bluez[HCI_DUMP_HEADER_SIZE_BLUEZ]; 84 uint8_t header_packetlogger[HCI_DUMP_HEADER_SIZE_PACKETLOGGER]; 85 } header; 86 87 uint32_t tv_sec = 0; 88 uint32_t tv_us = 0; 89 90 // get time 91 struct timeval curr_time; 92 gettimeofday(&curr_time, NULL); 93 tv_sec = curr_time.tv_sec; 94 tv_us = curr_time.tv_usec; 95 96 uint16_t header_len = 0; 97 switch (dump_format){ 98 case HCI_DUMP_BLUEZ: 99 hci_dump_setup_header_bluez(header.header_bluez, tv_sec, tv_us, packet_type, in, len); 100 header_len = HCI_DUMP_HEADER_SIZE_BLUEZ; 101 break; 102 case HCI_DUMP_PACKETLOGGER: 103 hci_dump_setup_header_packetlogger(header.header_packetlogger, tv_sec, tv_us, packet_type, in, len); 104 header_len = HCI_DUMP_HEADER_SIZE_PACKETLOGGER; 105 break; 106 default: 107 return; 108 } 109 110 (void) write(dump_file, &header, header_len); 111 (void) write(dump_file, packet, len ); 112 } 113 114 static void hci_dump_posix_fs_log_message(const char * format, va_list argptr){ 115 if (dump_file < 0) return; 116 int len = vsnprintf(log_message_buffer, sizeof(log_message_buffer), format, argptr); 117 hci_dump_posix_fs_log_packet(LOG_MESSAGE_PACKET, 0, (uint8_t*) log_message_buffer, len); 118 } 119 120 // returns system errno 121 int hci_dump_posix_fs_open(const char *filename, hci_dump_format_t format){ 122 btstack_assert(format == HCI_DUMP_BLUEZ || format == HCI_DUMP_PACKETLOGGER); 123 124 dump_format = format; 125 int oflags = O_WRONLY | O_CREAT | O_TRUNC; 126 #ifdef _WIN32 127 oflags |= O_BINARY; 128 #endif 129 dump_file = open(filename, oflags, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH ); 130 if (dump_file < 0){ 131 printf("failed to open file %s, errno = %d\n", filename, errno); 132 return errno; 133 } 134 return 0; 135 } 136 137 void hci_dump_posix_fs_close(void){ 138 close(dump_file); 139 dump_file = -1; 140 } 141 142 const hci_dump_t * hci_dump_posix_fs_get_instance(void){ 143 static const hci_dump_t hci_dump_instance = { 144 // void (*reset)(void); 145 &hci_dump_posix_fs_reset, 146 // void (*log_packet)(uint8_t packet_type, uint8_t in, uint8_t *packet, uint16_t len); 147 &hci_dump_posix_fs_log_packet, 148 // void (*log_message)(int log_level, const char * format, va_list argptr); 149 &hci_dump_posix_fs_log_message, 150 }; 151 return &hci_dump_instance; 152 } 153