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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 | /* server.c */ /* * Copyright (c) 2017 Intel Corporation. * * SPDX-License-Identifier: Apache-2.0 */ #if defined(CONFIG_NET_DEBUG_APP) #define SYS_LOG_DOMAIN "net/app" #define NET_SYS_LOG_LEVEL SYS_LOG_LEVEL_DEBUG #define NET_LOG_ENABLED 1 #endif #include <zephyr.h> #include <string.h> #include <errno.h> #include <stdlib.h> #include <net/net_core.h> #include <net/net_ip.h> #include <net/net_if.h> #include <net/net_app.h> #include "net_app_private.h" #if defined(CONFIG_NET_TCP) static void new_client(struct net_context *net_ctx, const struct sockaddr *addr) { #if defined(CONFIG_NET_DEBUG_APP) && (CONFIG_SYS_LOG_NET_LEVEL > 2) #if defined(CONFIG_NET_IPV6) #define PORT_STR sizeof("[]:xxxxx") char buf[NET_IPV6_ADDR_LEN + PORT_STR]; #elif defined(CONFIG_NET_IPV4) && !defined(CONFIG_NET_IPV6) #define PORT_STR sizeof(":xxxxx") char buf[NET_IPV4_ADDR_LEN + PORT_STR]; #endif NET_INFO("Connection from %s (%p)", _net_app_sprint_ipaddr(buf, sizeof(buf), addr), net_ctx); #endif /* CONFIG_NET_DEBUG_APP */ } void _net_app_accept_cb(struct net_context *net_ctx, struct sockaddr *addr, socklen_t addrlen, int status, void *data) { struct net_app_ctx *ctx = data; ARG_UNUSED(addr); ARG_UNUSED(addrlen); if (status != 0 || ctx->server.net_ctx) { /* We are already connected and support only one connection at * a time so this new connection must be closed. */ net_context_put(net_ctx); if (ctx->cb.connect) { if (!status) { status = -ECONNREFUSED; } ctx->cb.connect(ctx, status, ctx->user_data); } if (ctx->server.net_ctx) { NET_DBG("Already connected via context %p", ctx->server.net_ctx); } return; } ctx->server.net_ctx = net_ctx; new_client(net_ctx, addr); net_context_recv(net_ctx, ctx->recv_cb, K_NO_WAIT, ctx); if (ctx->cb.connect) { ctx->cb.connect(ctx, 0, ctx->user_data); } } #endif /* CONFIG_NET_TCP */ int net_app_listen(struct net_app_ctx *ctx) { int ret; bool dual = false; if (!ctx) { return -EINVAL; } if (!ctx->is_init) { return -ENOENT; } if (ctx->app_type != NET_APP_SERVER) { return -EINVAL; } #if defined(CONFIG_NET_IPV4) if (ctx->ipv4.local.family == AF_UNSPEC) { ctx->ipv4.local.family = AF_INET; dual = true; _net_app_set_local_addr(&ctx->ipv4.local, NULL, net_sin(&ctx->ipv4.local)->sin_port); } ret = _net_app_set_net_ctx(ctx, ctx->ipv4.ctx, &ctx->ipv4.local, sizeof(struct sockaddr_in), ctx->proto); if (ret < 0) { net_context_put(ctx->ipv4.ctx); ctx->ipv4.ctx = NULL; } #if defined(CONFIG_NET_APP_DTLS) else { if (ctx->is_tls && ctx->proto == IPPROTO_UDP) { net_context_recv(ctx->ipv4.ctx, ctx->recv_cb, K_NO_WAIT, ctx); } } #endif #endif /* CONFIG_NET_IPV4 */ /* We ignore the IPv4 error if IPv6 is enabled */ #if defined(CONFIG_NET_IPV6) if (ctx->ipv6.local.family == AF_UNSPEC || dual) { ctx->ipv6.local.family = AF_INET6; _net_app_set_local_addr(&ctx->ipv6.local, NULL, net_sin6(&ctx->ipv6.local)->sin6_port); } ret = _net_app_set_net_ctx(ctx, ctx->ipv6.ctx, &ctx->ipv6.local, sizeof(struct sockaddr_in6), ctx->proto); if (ret < 0) { net_context_put(ctx->ipv6.ctx); ctx->ipv6.ctx = NULL; } #if defined(CONFIG_NET_APP_DTLS) else { if (ctx->is_tls && ctx->proto == IPPROTO_UDP) { net_context_recv(ctx->ipv6.ctx, ctx->recv_cb, K_NO_WAIT, ctx); } } #endif #endif /* CONFIG_NET_IPV6 */ return ret; } int net_app_init_server(struct net_app_ctx *ctx, enum net_sock_type sock_type, enum net_ip_protocol proto, struct sockaddr *server_addr, u16_t port, void *user_data) { int ret; if (!ctx) { return -EINVAL; } if (ctx->is_init) { return -EALREADY; } #if defined(CONFIG_NET_IPV4) memset(&ctx->ipv4.local, 0, sizeof(ctx->ipv4.local)); #endif #if defined(CONFIG_NET_IPV6) memset(&ctx->ipv6.local, 0, sizeof(ctx->ipv6.local)); #endif if (server_addr) { if (server_addr->family == AF_INET) { #if defined(CONFIG_NET_IPV4) memcpy(&ctx->ipv4.local, server_addr, sizeof(ctx->ipv4.local)); #else return -EPROTONOSUPPORT; #endif } if (server_addr->family == AF_INET6) { #if defined(CONFIG_NET_IPV6) memcpy(&ctx->ipv6.local, server_addr, sizeof(ctx->ipv6.local)); #else return -EPROTONOSUPPORT; #endif } } else { if (port == 0) { return -EINVAL; } #if defined(CONFIG_NET_IPV4) ctx->ipv4.local.family = AF_INET; net_sin(&ctx->ipv4.local)->sin_port = htons(port); #endif #if defined(CONFIG_NET_IPV6) ctx->ipv6.local.family = AF_INET6; net_sin6(&ctx->ipv6.local)->sin6_port = htons(port); #endif } ctx->app_type = NET_APP_SERVER; ctx->user_data = user_data; ctx->send_data = net_context_sendto; ctx->recv_cb = _net_app_received; ctx->proto = proto; ctx->sock_type = sock_type; ret = _net_app_config_local_ctx(ctx, sock_type, proto, NULL); if (ret < 0) { goto fail; } NET_ASSERT_INFO(ctx->default_ctx, "Default ctx not selected"); ctx->is_init = true; _net_app_register(ctx); fail: return ret; } #if defined(CONFIG_NET_APP_TLS) static inline void new_server(struct net_app_ctx *ctx, const char *server_banner) { #if defined(CONFIG_NET_DEBUG_APP) && (CONFIG_SYS_LOG_NET_LEVEL > 2) #if defined(CONFIG_NET_IPV6) #define PORT_STR sizeof("[]:xxxxx") char buf[NET_IPV6_ADDR_LEN + PORT_STR]; #elif defined(CONFIG_NET_IPV4) && !defined(CONFIG_NET_IPV6) #define PORT_STR sizeof(":xxxxx") char buf[NET_IPV4_ADDR_LEN + PORT_STR]; #endif #if defined(CONFIG_NET_IPV6) NET_INFO("%s %s (%p)", server_banner, _net_app_sprint_ipaddr(buf, sizeof(buf), &ctx->ipv6.local), ctx); #endif #if defined(CONFIG_NET_IPV4) NET_INFO("%s %s (%p)", server_banner, _net_app_sprint_ipaddr(buf, sizeof(buf), &ctx->ipv4.local), ctx); #endif #endif /* CONFIG_NET_DEBUG_APP */ } static void tls_server_handler(struct net_app_ctx *ctx, struct k_sem *startup_sync) { int ret; NET_DBG("Starting TLS server thread for %p", ctx); ret = _net_app_tls_init(ctx, MBEDTLS_SSL_IS_SERVER); if (ret < 0) { NET_DBG("TLS server init failed"); return; } k_sem_give(startup_sync); while (1) { _net_app_ssl_mainloop(ctx); mbedtls_ssl_close_notify(&ctx->tls.mbedtls.ssl); if (ctx->cb.close) { ctx->cb.close(ctx, -ESHUTDOWN, ctx->user_data); } if (ctx->server.net_ctx) { NET_DBG("Server context %p removed", ctx->server.net_ctx); net_context_put(ctx->server.net_ctx); ctx->server.net_ctx = NULL; } } } #define TLS_STARTUP_TIMEOUT K_SECONDS(5) bool net_app_server_tls_enable(struct net_app_ctx *ctx) { struct k_sem startup_sync; NET_ASSERT(ctx); if (!(ctx->tls.stack && ctx->tls.stack_size > 0)) { /* No stack or stack size is 0, we cannot enable */ return false; } ctx->is_enabled = true; /* Start the thread that handles TLS traffic. */ if (!ctx->tls.tid) { k_sem_init(&startup_sync, 0, 1); ctx->tls.tid = k_thread_create(&ctx->tls.thread, ctx->tls.stack, ctx->tls.stack_size, (k_thread_entry_t) tls_server_handler, ctx, &startup_sync, 0, K_PRIO_COOP(7), 0, 0); /* Wait until we know that the TLS thread startup was ok */ if (k_sem_take(&startup_sync, TLS_STARTUP_TIMEOUT) < 0) { NET_ERR("TLS server handler start failed"); _net_app_tls_handler_stop(ctx); return false; } } return true; } bool net_app_server_tls_disable(struct net_app_ctx *ctx) { NET_ASSERT(ctx); ctx->is_enabled = false; if (!ctx->tls.tid) { return false; } _net_app_tls_handler_stop(ctx); return true; } int net_app_server_tls(struct net_app_ctx *ctx, u8_t *request_buf, size_t request_buf_len, const char *server_banner, u8_t *personalization_data, size_t personalization_data_len, net_app_cert_cb_t cert_cb, net_app_entropy_src_cb_t entropy_src_cb, struct k_mem_pool *pool, k_thread_stack_t stack, size_t stack_size) { if (!request_buf || request_buf_len == 0) { NET_ERR("Request buf must be set"); return -EINVAL; } /* mbedtls cannot receive or send larger buffer as what is defined * in a file pointed by CONFIG_MBEDTLS_CFG_FILE. */ if (request_buf_len > MBEDTLS_SSL_MAX_CONTENT_LEN) { NET_ERR("Request buf too large, max len is %d", MBEDTLS_SSL_MAX_CONTENT_LEN); return -EINVAL; } if (!cert_cb) { NET_ERR("Cert callback must be set"); return -EINVAL; } if (server_banner) { new_server(ctx, server_banner); } ctx->tls.request_buf = request_buf; ctx->tls.request_buf_len = request_buf_len; ctx->is_tls = true; ctx->tls.stack = stack; ctx->tls.stack_size = stack_size; ctx->tls.mbedtls.cert_cb = cert_cb; ctx->tls.pool = pool; if (entropy_src_cb) { ctx->tls.mbedtls.entropy_src_cb = entropy_src_cb; } else { ctx->tls.mbedtls.entropy_src_cb = _net_app_entropy_source; } ctx->tls.mbedtls.personalization_data = personalization_data; ctx->tls.mbedtls.personalization_data_len = personalization_data_len; ctx->send_data = _net_app_tls_sendto; ctx->recv_cb = _net_app_tls_received; /* Then mbedtls specific initialization */ return 0; } #endif /* CONFIG_NET_APP_TLS */ |