| 1 | /* Copyright (C) 2010-2022 The RetroArch team |
| 2 | * |
| 3 | * --------------------------------------------------------------------------------------- |
| 4 | * The following license statement only applies to this file (net_compat.c). |
| 5 | * --------------------------------------------------------------------------------------- |
| 6 | * |
| 7 | * Permission is hereby granted, free of charge, |
| 8 | * to any person obtaining a copy of this software and associated documentation files (the "Software"), |
| 9 | * to deal in the Software without restriction, including without limitation the rights to |
| 10 | * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, |
| 11 | * and to permit persons to whom the Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, |
| 16 | * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 18 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| 19 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 21 | */ |
| 22 | |
| 23 | #include <stdlib.h> |
| 24 | #include <stdio.h> |
| 25 | |
| 26 | #include <compat/strl.h> |
| 27 | #include <retro_miscellaneous.h> |
| 28 | #include <retro_timers.h> |
| 29 | |
| 30 | #include <net/net_compat.h> |
| 31 | |
| 32 | #if defined(_WIN32) && !defined(_XBOX) |
| 33 | #if !defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600 |
| 34 | const char *inet_ntop(int af, const void *src, char *dst, socklen_t size) |
| 35 | { |
| 36 | struct sockaddr_storage addr; |
| 37 | |
| 38 | switch (af) |
| 39 | { |
| 40 | case AF_INET: |
| 41 | memcpy(&((struct sockaddr_in*)&addr)->sin_addr, src, |
| 42 | sizeof(struct in_addr)); |
| 43 | break; |
| 44 | #ifdef HAVE_INET6 |
| 45 | case AF_INET6: |
| 46 | memcpy(&((struct sockaddr_in6*)&addr)->sin6_addr, src, |
| 47 | sizeof(struct in6_addr)); |
| 48 | break; |
| 49 | #endif |
| 50 | default: |
| 51 | return NULL; |
| 52 | } |
| 53 | |
| 54 | addr.ss_family = af; |
| 55 | if (getnameinfo((struct sockaddr*)&addr, sizeof(addr), dst, size, NULL, 0, |
| 56 | NI_NUMERICHOST)) |
| 57 | return NULL; |
| 58 | |
| 59 | return dst; |
| 60 | } |
| 61 | |
| 62 | int inet_pton(int af, const char *src, void *dst) |
| 63 | { |
| 64 | struct addrinfo *addr = NULL; |
| 65 | struct addrinfo hints = {0}; |
| 66 | |
| 67 | switch (af) |
| 68 | { |
| 69 | case AF_INET: |
| 70 | #ifdef HAVE_INET6 |
| 71 | case AF_INET6: |
| 72 | #endif |
| 73 | break; |
| 74 | default: |
| 75 | return -1; |
| 76 | } |
| 77 | |
| 78 | hints.ai_family = af; |
| 79 | hints.ai_flags = AI_NUMERICHOST; |
| 80 | switch (getaddrinfo(src, NULL, &hints, &addr)) |
| 81 | { |
| 82 | case 0: |
| 83 | break; |
| 84 | case EAI_NONAME: |
| 85 | return 0; |
| 86 | default: |
| 87 | return -1; |
| 88 | } |
| 89 | |
| 90 | if (!addr) |
| 91 | return -1; |
| 92 | |
| 93 | switch (af) |
| 94 | { |
| 95 | case AF_INET: |
| 96 | memcpy(dst, &((struct sockaddr_in*)addr->ai_addr)->sin_addr, |
| 97 | sizeof(struct in_addr)); |
| 98 | break; |
| 99 | #ifdef HAVE_INET6 |
| 100 | case AF_INET6: |
| 101 | memcpy(dst, &((struct sockaddr_in6*)addr->ai_addr)->sin6_addr, |
| 102 | sizeof(struct in6_addr)); |
| 103 | break; |
| 104 | #endif |
| 105 | default: |
| 106 | break; |
| 107 | } |
| 108 | |
| 109 | freeaddrinfo(addr); |
| 110 | |
| 111 | return 1; |
| 112 | } |
| 113 | #endif |
| 114 | |
| 115 | #elif defined(_XBOX) |
| 116 | struct hostent *gethostbyname(const char *name) |
| 117 | { |
| 118 | static struct in_addr addr = {0}; |
| 119 | static struct hostent he = {0}; |
| 120 | WSAEVENT event; |
| 121 | XNDNS *dns = NULL; |
| 122 | struct hostent *ret = NULL; |
| 123 | |
| 124 | if (!name) |
| 125 | return NULL; |
| 126 | |
| 127 | event = WSACreateEvent(); |
| 128 | |
| 129 | XNetDnsLookup(name, event, &dns); |
| 130 | if (!dns) |
| 131 | goto done; |
| 132 | |
| 133 | WaitForSingleObject((HANDLE)event, INFINITE); |
| 134 | |
| 135 | if (dns->iStatus) |
| 136 | goto done; |
| 137 | |
| 138 | memcpy(&addr, dns->aina, sizeof(addr)); |
| 139 | |
| 140 | he.h_name = NULL; |
| 141 | he.h_aliases = NULL; |
| 142 | he.h_addrtype = AF_INET; |
| 143 | he.h_length = sizeof(addr); |
| 144 | he.h_addr_list = &he.h_addr; |
| 145 | he.h_addr = (char*)&addr; |
| 146 | |
| 147 | ret = &he; |
| 148 | |
| 149 | done: |
| 150 | WSACloseEvent(event); |
| 151 | if (dns) |
| 152 | XNetDnsRelease(dns); |
| 153 | |
| 154 | return ret; |
| 155 | } |
| 156 | |
| 157 | #elif defined(VITA) |
| 158 | #define COMPAT_NET_INIT_SIZE 0x80000 |
| 159 | |
| 160 | char *inet_ntoa(struct in_addr in) |
| 161 | { |
| 162 | static char ip_addr[16]; |
| 163 | |
| 164 | sceNetInetNtop(AF_INET, &in, ip_addr, sizeof(ip_addr)); |
| 165 | |
| 166 | return ip_addr; |
| 167 | } |
| 168 | |
| 169 | int inet_aton(const char *cp, struct in_addr *inp) |
| 170 | { |
| 171 | return sceNetInetPton(AF_INET, cp, inp); |
| 172 | } |
| 173 | |
| 174 | uint32_t inet_addr(const char *cp) |
| 175 | { |
| 176 | struct in_addr in; |
| 177 | |
| 178 | return (sceNetInetPton(AF_INET, cp, &in) == 1) ? in.s_addr : INADDR_NONE; |
| 179 | } |
| 180 | |
| 181 | struct hostent *gethostbyname(const char *name) |
| 182 | { |
| 183 | static struct SceNetInAddr addr = {0}; |
| 184 | static struct hostent he = {0}; |
| 185 | int rid; |
| 186 | struct hostent *ret = NULL; |
| 187 | |
| 188 | if (!name) |
| 189 | return NULL; |
| 190 | |
| 191 | rid = sceNetResolverCreate("resolver", NULL, 0); |
| 192 | if (rid < 0) |
| 193 | return NULL; |
| 194 | |
| 195 | if (sceNetResolverStartNtoa(rid, name, &addr, 0, 0, 0) < 0) |
| 196 | goto done; |
| 197 | |
| 198 | he.h_name = NULL; |
| 199 | he.h_aliases = NULL; |
| 200 | he.h_addrtype = AF_INET; |
| 201 | he.h_length = sizeof(addr); |
| 202 | he.h_addr_list = &he.h_addr; |
| 203 | he.h_addr = (char*)&addr; |
| 204 | |
| 205 | ret = &he; |
| 206 | |
| 207 | done: |
| 208 | sceNetResolverDestroy(rid); |
| 209 | |
| 210 | return ret; |
| 211 | } |
| 212 | |
| 213 | #elif defined(GEKKO) |
| 214 | const char *inet_ntop(int af, const void *src, char *dst, socklen_t size) |
| 215 | { |
| 216 | const char *addr_str = inet_ntoa(*(struct in_addr*)src); |
| 217 | |
| 218 | if (addr_str) |
| 219 | { |
| 220 | strlcpy(dst, addr_str, size); |
| 221 | |
| 222 | return dst; |
| 223 | } |
| 224 | |
| 225 | return NULL; |
| 226 | } |
| 227 | |
| 228 | int inet_pton(int af, const char *src, void *dst) |
| 229 | { |
| 230 | if (inet_aton(src, (struct in_addr*)dst)) |
| 231 | return 1; |
| 232 | |
| 233 | return 0; |
| 234 | } |
| 235 | |
| 236 | #elif defined(WIIU) |
| 237 | #include <malloc.h> |
| 238 | |
| 239 | static int _net_compat_thread_entry(int argc, const char **argv) |
| 240 | { |
| 241 | void *buf = memalign(128, WIIU_RCVBUF + WIIU_SNDBUF); |
| 242 | |
| 243 | if (!buf) |
| 244 | return -1; |
| 245 | |
| 246 | somemopt(1, buf, WIIU_RCVBUF + WIIU_SNDBUF, 0); |
| 247 | |
| 248 | free(buf); |
| 249 | |
| 250 | return 0; |
| 251 | } |
| 252 | |
| 253 | static void _net_compat_thread_cleanup(OSThread *thread, void *stack) |
| 254 | { |
| 255 | free(stack); |
| 256 | } |
| 257 | |
| 258 | #elif defined(_3DS) |
| 259 | #include <malloc.h> |
| 260 | #include <3ds/types.h> |
| 261 | #include <3ds/services/soc.h> |
| 262 | |
| 263 | #define SOC_ALIGN 0x1000 |
| 264 | #define SOC_BUFFERSIZE 0x100000 |
| 265 | #endif |
| 266 | |
| 267 | int getaddrinfo_retro(const char *node, const char *service, |
| 268 | struct addrinfo *hints, struct addrinfo **res) |
| 269 | { |
| 270 | #if defined(HAVE_SOCKET_LEGACY) || defined(WIIU) |
| 271 | struct addrinfo default_hints = {0}; |
| 272 | |
| 273 | if (!hints) |
| 274 | hints = &default_hints; |
| 275 | if (!hints->ai_family) |
| 276 | hints->ai_family = AF_INET; |
| 277 | |
| 278 | if (!node) |
| 279 | node = (hints->ai_flags & AI_PASSIVE) ? "0.0.0.0" : "127.0.0.1"; |
| 280 | #endif |
| 281 | |
| 282 | #ifdef HAVE_SOCKET_LEGACY |
| 283 | { |
| 284 | struct addrinfo *info = (struct addrinfo*)calloc(1, sizeof(*info)); |
| 285 | struct sockaddr_in *addr = (struct sockaddr_in*)malloc(sizeof(*addr)); |
| 286 | |
| 287 | if (!info || !addr) |
| 288 | goto failure; |
| 289 | |
| 290 | info->ai_family = AF_INET; |
| 291 | info->ai_socktype = hints->ai_socktype; |
| 292 | info->ai_protocol = hints->ai_protocol; |
| 293 | info->ai_addrlen = sizeof(*addr); |
| 294 | info->ai_addr = (struct sockaddr*)addr; |
| 295 | /* We ignore AI_CANONNAME; ai_canonname is always NULL. */ |
| 296 | |
| 297 | addr->sin_family = AF_INET; |
| 298 | |
| 299 | if (service) |
| 300 | { |
| 301 | /* We can only handle numeric ports; ignore AI_NUMERICSERV. */ |
| 302 | char *service_end = NULL; |
| 303 | uint16_t port = (uint16_t)strtoul(service, &service_end, 10); |
| 304 | |
| 305 | if (service_end == service || *service_end) |
| 306 | goto failure; |
| 307 | |
| 308 | addr->sin_port = htons(port); |
| 309 | } |
| 310 | |
| 311 | if (hints->ai_flags & AI_NUMERICHOST) |
| 312 | { |
| 313 | if (!inet_aton(node, &addr->sin_addr)) |
| 314 | goto failure; |
| 315 | } |
| 316 | else |
| 317 | { |
| 318 | struct hostent *host = gethostbyname(node); |
| 319 | |
| 320 | if (!host || !host->h_addr) |
| 321 | goto failure; |
| 322 | |
| 323 | memcpy(&addr->sin_addr, host->h_addr, sizeof(addr->sin_addr)); |
| 324 | } |
| 325 | |
| 326 | *res = info; |
| 327 | |
| 328 | return 0; |
| 329 | |
| 330 | failure: |
| 331 | free(addr); |
| 332 | free(info); |
| 333 | |
| 334 | return -1; |
| 335 | } |
| 336 | #else |
| 337 | return getaddrinfo(node, service, hints, res); |
| 338 | #endif |
| 339 | } |
| 340 | |
| 341 | void freeaddrinfo_retro(struct addrinfo *res) |
| 342 | { |
| 343 | #ifdef HAVE_SOCKET_LEGACY |
| 344 | if (res) |
| 345 | { |
| 346 | free(res->ai_addr); |
| 347 | free(res); |
| 348 | } |
| 349 | #else |
| 350 | freeaddrinfo(res); |
| 351 | #endif |
| 352 | } |
| 353 | |
| 354 | int getnameinfo_retro(const struct sockaddr *addr, socklen_t addrlen, |
| 355 | char *host, socklen_t hostlen, char *serv, socklen_t servlen, int flags) |
| 356 | { |
| 357 | #ifdef HAVE_SOCKET_LEGACY |
| 358 | const struct sockaddr_in *addr4 = (const struct sockaddr_in*)addr; |
| 359 | |
| 360 | /* We cannot perform reverse DNS lookups here; ignore the following flags: |
| 361 | NI_NAMEREQD |
| 362 | NI_NOFQDN |
| 363 | NI_NUMERICHOST (always enforced) |
| 364 | */ |
| 365 | if (host && hostlen) |
| 366 | { |
| 367 | const char *_host = inet_ntoa(addr4->sin_addr); |
| 368 | |
| 369 | if (!_host) |
| 370 | return -1; |
| 371 | |
| 372 | strlcpy(host, _host, hostlen); |
| 373 | } |
| 374 | |
| 375 | /* We cannot get service names here; ignore the following flags: |
| 376 | NI_DGRAM |
| 377 | NI_NUMERICSERV (always enforced) |
| 378 | */ |
| 379 | if (serv && servlen) |
| 380 | snprintf(serv, servlen, "%hu", (unsigned short)ntohs(addr4->sin_port)); |
| 381 | |
| 382 | return 0; |
| 383 | #else |
| 384 | return getnameinfo(addr, addrlen, host, hostlen, serv, servlen, flags); |
| 385 | #endif |
| 386 | } |
| 387 | |
| 388 | bool addr_6to4(struct sockaddr_storage *addr) |
| 389 | { |
| 390 | #ifdef HAVE_INET6 |
| 391 | /* ::ffff:a.b.c.d */ |
| 392 | static const uint16_t preffix[] = {0,0,0,0,0,0xffff}; |
| 393 | uint32_t address; |
| 394 | uint16_t port; |
| 395 | struct sockaddr_in6 *addr6 = (struct sockaddr_in6*)addr; |
| 396 | struct sockaddr_in *addr4 = (struct sockaddr_in*)addr; |
| 397 | |
| 398 | switch (addr->ss_family) |
| 399 | { |
| 400 | case AF_INET: |
| 401 | /* No need to convert. */ |
| 402 | return true; |
| 403 | case AF_INET6: |
| 404 | /* Is the address provided an IPv4? */ |
| 405 | if (!memcmp(&addr6->sin6_addr, preffix, sizeof(preffix))) |
| 406 | break; |
| 407 | default: |
| 408 | /* We don't know how to handle this. */ |
| 409 | return false; |
| 410 | } |
| 411 | |
| 412 | memcpy(&address, ((uint8_t*)&addr6->sin6_addr) + sizeof(preffix), |
| 413 | sizeof(address)); |
| 414 | port = addr6->sin6_port; |
| 415 | |
| 416 | memset(addr, 0, sizeof(*addr)); |
| 417 | |
| 418 | addr4->sin_family = AF_INET; |
| 419 | addr4->sin_port = port; |
| 420 | memcpy(&addr4->sin_addr, &address, sizeof(addr4->sin_addr)); |
| 421 | #endif |
| 422 | |
| 423 | return true; |
| 424 | } |
| 425 | |
| 426 | bool ipv4_is_lan_address(const struct sockaddr_in *addr) |
| 427 | { |
| 428 | static const uint32_t subnets[] = {0x0A000000, 0xAC100000, 0xC0A80000}; |
| 429 | static const uint32_t masks[] = {0xFF000000, 0xFFF00000, 0xFFFF0000}; |
| 430 | size_t i; |
| 431 | uint32_t uaddr; |
| 432 | |
| 433 | memcpy(&uaddr, &addr->sin_addr, sizeof(uaddr)); |
| 434 | uaddr = ntohl(uaddr); |
| 435 | |
| 436 | for (i = 0; i < ARRAY_SIZE(subnets); i++) |
| 437 | if ((uaddr & masks[i]) == subnets[i]) |
| 438 | return true; |
| 439 | |
| 440 | return false; |
| 441 | } |
| 442 | |
| 443 | bool ipv4_is_cgnat_address(const struct sockaddr_in *addr) |
| 444 | { |
| 445 | static const uint32_t subnet = 0x64400000; |
| 446 | static const uint32_t mask = 0xFFC00000; |
| 447 | uint32_t uaddr; |
| 448 | |
| 449 | memcpy(&uaddr, &addr->sin_addr, sizeof(uaddr)); |
| 450 | uaddr = ntohl(uaddr); |
| 451 | |
| 452 | return (uaddr & mask) == subnet; |
| 453 | } |
| 454 | |
| 455 | /** |
| 456 | * network_init: |
| 457 | * |
| 458 | * Platform specific socket library initialization. |
| 459 | * |
| 460 | * @return true if successful, otherwise false. |
| 461 | **/ |
| 462 | bool network_init(void) |
| 463 | { |
| 464 | #if defined(_WIN32) |
| 465 | static bool initialized = false; |
| 466 | |
| 467 | if (!initialized) |
| 468 | { |
| 469 | WSADATA wsaData; |
| 470 | |
| 471 | if (WSAStartup(MAKEWORD(2, 2), &wsaData)) |
| 472 | { |
| 473 | WSACleanup(); |
| 474 | |
| 475 | return false; |
| 476 | } |
| 477 | |
| 478 | initialized = true; |
| 479 | } |
| 480 | |
| 481 | return true; |
| 482 | #elif defined(__PSL1GHT__) || defined(__PS3__) |
| 483 | static bool initialized = false; |
| 484 | |
| 485 | if (!initialized) |
| 486 | { |
| 487 | int tries; |
| 488 | |
| 489 | sysModuleLoad(SYSMODULE_NET); |
| 490 | |
| 491 | netInitialize(); |
| 492 | if (netCtlInit() < 0) |
| 493 | goto failure; |
| 494 | |
| 495 | for (tries = 10;;) |
| 496 | { |
| 497 | int state; |
| 498 | |
| 499 | if (netCtlGetState(&state) < 0) |
| 500 | goto failure; |
| 501 | if (state == NET_CTL_STATE_IPObtained) |
| 502 | break; |
| 503 | |
| 504 | if (!(--tries)) |
| 505 | goto failure; |
| 506 | |
| 507 | retro_sleep(500); |
| 508 | } |
| 509 | |
| 510 | initialized = true; |
| 511 | } |
| 512 | |
| 513 | return true; |
| 514 | |
| 515 | failure: |
| 516 | netCtlTerm(); |
| 517 | netFinalizeNetwork(); |
| 518 | |
| 519 | sysModuleUnload(SYSMODULE_NET); |
| 520 | |
| 521 | return false; |
| 522 | #elif defined(VITA) |
| 523 | if (sceNetShowNetstat() == SCE_NET_ERROR_ENOTINIT) |
| 524 | { |
| 525 | SceNetInitParam param; |
| 526 | void *net_compat_memory = malloc(COMPAT_NET_INIT_SIZE); |
| 527 | |
| 528 | if (!net_compat_memory) |
| 529 | return false; |
| 530 | |
| 531 | param.memory = net_compat_memory; |
| 532 | param.size = COMPAT_NET_INIT_SIZE; |
| 533 | param.flags = 0; |
| 534 | |
| 535 | if (sceNetInit(¶m) < 0) |
| 536 | goto failure; |
| 537 | if (sceNetCtlInit() < 0) |
| 538 | goto failure; |
| 539 | |
| 540 | return true; |
| 541 | |
| 542 | failure: |
| 543 | sceNetCtlTerm(); |
| 544 | sceNetTerm(); |
| 545 | |
| 546 | free(net_compat_memory); |
| 547 | |
| 548 | return false; |
| 549 | } |
| 550 | |
| 551 | return true; |
| 552 | #elif defined(GEKKO) |
| 553 | static bool initialized = false; |
| 554 | |
| 555 | if (!initialized) |
| 556 | { |
| 557 | char localip[16] = {0}; |
| 558 | char netmask[16] = {0}; |
| 559 | char gateway[16] = {0}; |
| 560 | |
| 561 | if (if_config(localip, netmask, gateway, true, 10) < 0) |
| 562 | { |
| 563 | net_deinit(); |
| 564 | |
| 565 | return false; |
| 566 | } |
| 567 | |
| 568 | initialized = true; |
| 569 | } |
| 570 | |
| 571 | return true; |
| 572 | #elif defined(WIIU) |
| 573 | static OSThread net_compat_thread; |
| 574 | static bool initialized = false; |
| 575 | |
| 576 | if (!initialized) |
| 577 | { |
| 578 | void *stack = malloc(0x1000); |
| 579 | |
| 580 | if (!stack) |
| 581 | return false; |
| 582 | |
| 583 | socket_lib_init(); |
| 584 | |
| 585 | if (!OSCreateThread(&net_compat_thread, _net_compat_thread_entry, |
| 586 | 0, NULL, (void*)((size_t)stack + 0x1000), 0x1000, 3, |
| 587 | OS_THREAD_ATTRIB_AFFINITY_ANY)) |
| 588 | { |
| 589 | free(stack); |
| 590 | |
| 591 | return false; |
| 592 | } |
| 593 | |
| 594 | OSSetThreadName(&net_compat_thread, "Network compat thread"); |
| 595 | OSSetThreadDeallocator(&net_compat_thread, _net_compat_thread_cleanup); |
| 596 | OSResumeThread(&net_compat_thread); |
| 597 | |
| 598 | initialized = true; |
| 599 | } |
| 600 | |
| 601 | return true; |
| 602 | #elif defined(_3DS) |
| 603 | static bool initialized = false; |
| 604 | |
| 605 | if (!initialized) |
| 606 | { |
| 607 | u32 *net_compat_memory = (u32*)memalign(SOC_ALIGN, SOC_BUFFERSIZE); |
| 608 | |
| 609 | if (!net_compat_memory) |
| 610 | return false; |
| 611 | |
| 612 | /* WIFI init */ |
| 613 | if (socInit(net_compat_memory, SOC_BUFFERSIZE)) |
| 614 | { |
| 615 | socExit(); |
| 616 | |
| 617 | free(net_compat_memory); |
| 618 | |
| 619 | return false; |
| 620 | } |
| 621 | |
| 622 | initialized = true; |
| 623 | } |
| 624 | |
| 625 | return true; |
| 626 | #else |
| 627 | static bool initialized = false; |
| 628 | |
| 629 | if (!initialized) |
| 630 | { |
| 631 | /* Do not like SIGPIPE killing our app. */ |
| 632 | signal(SIGPIPE, SIG_IGN); |
| 633 | |
| 634 | initialized = true; |
| 635 | } |
| 636 | |
| 637 | return true; |
| 638 | #endif |
| 639 | } |