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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 | /* * Copyright (c) 2018 Nordic Semiconductor ASA * * SPDX-License-Identifier: Apache-2.0 */ /** @file mqtt_transport_socket_tls.h * * @brief Internal functions to handle transport over TLS socket. */ #include <logging/log.h> LOG_MODULE_REGISTER(net_mqtt_sock_tls, CONFIG_MQTT_LOG_LEVEL); #include <errno.h> #include <net/socket.h> #include <net/mqtt.h> #include "mqtt_os.h" int mqtt_client_tls_connect(struct mqtt_client *client) { const struct sockaddr *broker = client->broker; struct mqtt_sec_config *tls_config = &client->transport.tls.config; int ret; client->transport.tls.sock = socket(broker->sa_family, SOCK_STREAM, IPPROTO_TLS_1_2); if (client->transport.tls.sock < 0) { return -errno; } MQTT_TRC("Created socket %d", client->transport.tls.sock); #if defined(CONFIG_SOCKS) if (client->transport.proxy.addrlen != 0) { ret = setsockopt(client->transport.tls.sock, SOL_SOCKET, SO_SOCKS5, &client->transport.proxy.addr, client->transport.proxy.addrlen); if (ret < 0) { return -errno; } } #endif /* Set secure socket options. */ ret = setsockopt(client->transport.tls.sock, SOL_TLS, TLS_PEER_VERIFY, &tls_config->peer_verify, sizeof(tls_config->peer_verify)); if (ret < 0) { goto error; } if (tls_config->cipher_list != NULL && tls_config->cipher_count > 0) { ret = setsockopt(client->transport.tls.sock, SOL_TLS, TLS_CIPHERSUITE_LIST, tls_config->cipher_list, sizeof(int) * tls_config->cipher_count); if (ret < 0) { goto error; } } if (tls_config->sec_tag_list != NULL && tls_config->sec_tag_count > 0) { ret = setsockopt(client->transport.tls.sock, SOL_TLS, TLS_SEC_TAG_LIST, tls_config->sec_tag_list, sizeof(sec_tag_t) * tls_config->sec_tag_count); if (ret < 0) { goto error; } } if (tls_config->hostname) { ret = setsockopt(client->transport.tls.sock, SOL_TLS, TLS_HOSTNAME, tls_config->hostname, strlen(tls_config->hostname)); if (ret < 0) { goto error; } } size_t peer_addr_size = sizeof(struct sockaddr_in6); if (broker->sa_family == AF_INET) { peer_addr_size = sizeof(struct sockaddr_in); } ret = connect(client->transport.tls.sock, client->broker, peer_addr_size); if (ret < 0) { goto error; } MQTT_TRC("Connect completed"); return 0; error: (void)close(client->transport.tls.sock); return -errno; } int mqtt_client_tls_write(struct mqtt_client *client, const u8_t *data, u32_t datalen) { u32_t offset = 0U; int ret; while (offset < datalen) { ret = send(client->transport.tls.sock, data + offset, datalen - offset, 0); if (ret < 0) { return -errno; } offset += ret; } return 0; } int mqtt_client_tls_read(struct mqtt_client *client, u8_t *data, u32_t buflen, bool shall_block) { int flags = 0; int ret; if (!shall_block) { flags |= MSG_DONTWAIT; } ret = recv(client->transport.tls.sock, data, buflen, flags); if (ret < 0) { return -errno; } return ret; } int mqtt_client_tls_disconnect(struct mqtt_client *client) { int ret; MQTT_TRC("Closing socket %d", client->transport.tls.sock); ret = close(client->transport.tls.sock); if (ret < 0) { return -errno; } return 0; } |