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| 1 | +/* |
| 2 | + * Copyright (c) 2022 Nordic Semiconductor ASA |
| 3 | + * |
| 4 | + * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause |
| 5 | + */ |
| 6 | + |
| 7 | +#include <hw_id.h> |
| 8 | +#include <zephyr/kernel.h> |
| 9 | + |
| 10 | +/* includes for the different HW ID sources */ |
| 11 | +#if defined(CONFIG_HW_ID_LIBRARY_SOURCE_BLE_MAC) |
| 12 | +#include <zephyr/bluetooth/bluetooth.h> |
| 13 | +#endif /* defined(CONFIG_HW_ID_LIBRARY_SOURCE_BLE_MAC) */ |
| 14 | +#if defined(CONFIG_HW_ID_LIBRARY_SOURCE_DEVICE_ID) |
| 15 | +#include <zephyr/drivers/hwinfo.h> |
| 16 | +#endif /* defined(CONFIG_HW_ID_LIBRARY_SOURCE_DEVICE_ID) */ |
| 17 | +#if defined(CONFIG_HW_ID_LIBRARY_SOURCE_UUID) |
| 18 | +#include <modem/modem_jwt.h> |
| 19 | +#endif /* defined(CONFIG_HW_ID_LIBRARY_SOURCE_UUID) */ |
| 20 | +#if defined(CONFIG_HW_ID_LIBRARY_SOURCE_IMEI) |
| 21 | +#include <nrf_modem_at.h> |
| 22 | +#endif /* defined(CONFIG_HW_ID_LIBRARY_SOURCE_IMEI) */ |
| 23 | +#if defined(CONFIG_HW_ID_LIBRARY_SOURCE_NET_MAC) |
| 24 | +#include <zephyr/net/net_if.h> |
| 25 | +#endif /* defined(CONFIG_HW_ID_LIBRARY_SOURCE_NET_MAC) */ |
| 26 | + |
| 27 | +#define IMEI_LEN 15 |
| 28 | + |
| 29 | +#if defined(CONFIG_HW_ID_LIBRARY_SOURCE_BLE_MAC) |
| 30 | +/* Ask BLE stack for default MAC address */ |
| 31 | + |
| 32 | +int hw_id_get(char *buf, size_t buf_len) |
| 33 | +{ |
| 34 | + if (buf == NULL || buf_len < HW_ID_LEN) { |
| 35 | + return -EINVAL; |
| 36 | + } |
| 37 | + |
| 38 | + struct bt_le_oob oob; |
| 39 | + int ret = bt_le_oob_get_local(BT_ID_DEFAULT, &oob); |
| 40 | + |
| 41 | + if (ret) { |
| 42 | + return -EIO; |
| 43 | + } |
| 44 | + |
| 45 | + snprintk(buf, buf_len, "%02X%02X%02X%02X%02X%02X", |
| 46 | + oob.addr.a.val[5], |
| 47 | + oob.addr.a.val[4], |
| 48 | + oob.addr.a.val[3], |
| 49 | + oob.addr.a.val[2], |
| 50 | + oob.addr.a.val[1], |
| 51 | + oob.addr.a.val[0]); |
| 52 | + return 0; |
| 53 | +} |
| 54 | +#endif /* defined(CONFIG_HW_ID_LIBRARY_SOURCE_BLE_MAC) */ |
| 55 | + |
| 56 | +#if defined(CONFIG_HW_ID_LIBRARY_SOURCE_DEVICE_ID) |
| 57 | +/* Directly read Device ID from registers */ |
| 58 | + |
| 59 | +int hw_id_get(char *buf, size_t buf_len) |
| 60 | +{ |
| 61 | + if (buf == NULL || buf_len < HW_ID_LEN) { |
| 62 | + return -EINVAL; |
| 63 | + } |
| 64 | + |
| 65 | + uint8_t device_id[8]; |
| 66 | + ssize_t ret = hwinfo_get_device_id(device_id, ARRAY_SIZE(device_id)); |
| 67 | + |
| 68 | + if (ret != ARRAY_SIZE(device_id)) { |
| 69 | + return -EIO; |
| 70 | + } |
| 71 | + |
| 72 | + snprintk(buf, buf_len, "%02X%02X%02X%02X%02X%02X%02X%02X", |
| 73 | + device_id[0], |
| 74 | + device_id[1], |
| 75 | + device_id[2], |
| 76 | + device_id[3], |
| 77 | + device_id[4], |
| 78 | + device_id[5], |
| 79 | + device_id[6], |
| 80 | + device_id[7]); |
| 81 | + return 0; |
| 82 | +} |
| 83 | +#endif /* defined(CONFIG_HW_ID_LIBRARY_SOURCE_DEVICE_ID) */ |
| 84 | + |
| 85 | +#if defined(CONFIG_HW_ID_LIBRARY_SOURCE_UUID) |
| 86 | +/* Request a UUID from the modem */ |
| 87 | + |
| 88 | +int hw_id_get(char *buf, size_t buf_len) |
| 89 | +{ |
| 90 | + if (buf == NULL || buf_len < HW_ID_LEN) { |
| 91 | + return -EINVAL; |
| 92 | + } |
| 93 | + |
| 94 | + struct nrf_device_uuid dev = {0}; |
| 95 | + |
| 96 | + int err = modem_jwt_get_uuids(&dev, NULL); |
| 97 | + |
| 98 | + if (err) { |
| 99 | + return -EIO; |
| 100 | + } |
| 101 | + |
| 102 | + snprintk(buf, buf_len, "%s", dev.str); |
| 103 | + return 0; |
| 104 | +} |
| 105 | +#endif /* defined(CONFIG_HW_ID_LIBRARY_SOURCE_UUID) */ |
| 106 | + |
| 107 | +#if defined(CONFIG_HW_ID_LIBRARY_SOURCE_IMEI) |
| 108 | +/* Ask the modem for an IMEI */ |
| 109 | + |
| 110 | +int hw_id_get(char *buf, size_t buf_len) |
| 111 | +{ |
| 112 | + if (buf == NULL || buf_len < HW_ID_LEN) { |
| 113 | + return -EINVAL; |
| 114 | + } |
| 115 | + |
| 116 | + char imei_buf[IMEI_LEN + 6 + 1]; /* Add 6 for \r\nOK\r\n and 1 for \0 */ |
| 117 | + |
| 118 | + /* Retrieve device IMEI from modem. */ |
| 119 | + int err = nrf_modem_at_cmd(imei_buf, ARRAY_SIZE(imei_buf), "AT+CGSN"); |
| 120 | + |
| 121 | + if (err) { |
| 122 | + return -EIO; |
| 123 | + } |
| 124 | + |
| 125 | + /* Set null character at the end of the device IMEI. */ |
| 126 | + imei_buf[IMEI_LEN] = 0; |
| 127 | + |
| 128 | + snprintk(buf, buf_len, "%s", imei_buf); |
| 129 | + return 0; |
| 130 | +} |
| 131 | +#endif /* defined(CONFIG_HW_ID_LIBRARY_SOURCE_IMEI) */ |
| 132 | + |
| 133 | +#if defined(CONFIG_HW_ID_LIBRARY_SOURCE_NET_MAC) |
| 134 | +/* Use MAC address from default network interface */ |
| 135 | + |
| 136 | +int hw_id_get(char *buf, size_t buf_len) |
| 137 | +{ |
| 138 | + if (buf == NULL || buf_len < HW_ID_LEN) { |
| 139 | + return -EINVAL; |
| 140 | + } |
| 141 | + |
| 142 | + struct net_if *iface = net_if_get_default(); |
| 143 | + |
| 144 | + if (iface == NULL) { |
| 145 | + return -EIO; |
| 146 | + } |
| 147 | + |
| 148 | + struct net_linkaddr *linkaddr = net_if_get_link_addr(iface); |
| 149 | + |
| 150 | + snprintk(buf, buf_len, "%02X%02X%02X%02X%02X%02X", |
| 151 | + linkaddr->addr[0], |
| 152 | + linkaddr->addr[1], |
| 153 | + linkaddr->addr[2], |
| 154 | + linkaddr->addr[3], |
| 155 | + linkaddr->addr[4], |
| 156 | + linkaddr->addr[5]); |
| 157 | + return 0; |
| 158 | +} |
| 159 | +#endif /* defined(CONFIG_HW_ID_LIBRARY_SOURCE_NET_MAC) */ |
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