1baacf047SPaolo Bonzini /* 2baacf047SPaolo Bonzini * inet and unix socket functions for qemu 3baacf047SPaolo Bonzini * 4baacf047SPaolo Bonzini * (c) 2008 Gerd Hoffmann <kraxel@redhat.com> 5baacf047SPaolo Bonzini * 6baacf047SPaolo Bonzini * This program is free software; you can redistribute it and/or modify 7baacf047SPaolo Bonzini * it under the terms of the GNU General Public License as published by 8baacf047SPaolo Bonzini * the Free Software Foundation; under version 2 of the License. 9baacf047SPaolo Bonzini * 10baacf047SPaolo Bonzini * This program is distributed in the hope that it will be useful, 11baacf047SPaolo Bonzini * but WITHOUT ANY WARRANTY; without even the implied warranty of 12baacf047SPaolo Bonzini * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13baacf047SPaolo Bonzini * GNU General Public License for more details. 14baacf047SPaolo Bonzini * 15baacf047SPaolo Bonzini * Contributions after 2012-01-13 are licensed under the terms of the 16baacf047SPaolo Bonzini * GNU GPL, version 2 or (at your option) any later version. 17baacf047SPaolo Bonzini */ 18aafd7584SPeter Maydell #include "qemu/osdep.h" 19baacf047SPaolo Bonzini 206a02c806SStefan Hajnoczi #ifdef CONFIG_AF_VSOCK 216a02c806SStefan Hajnoczi #include <linux/vm_sockets.h> 226a02c806SStefan Hajnoczi #endif /* CONFIG_AF_VSOCK */ 236a02c806SStefan Hajnoczi 24baacf047SPaolo Bonzini #include "monitor/monitor.h" 25bd269ebcSMarkus Armbruster #include "qapi/clone-visitor.h" 26da34e65cSMarkus Armbruster #include "qapi/error.h" 27*9af23989SMarkus Armbruster #include "qapi/qapi-visit-sockets.h" 28baacf047SPaolo Bonzini #include "qemu/sockets.h" 29baacf047SPaolo Bonzini #include "qemu/main-loop.h" 30b3db211fSDaniel P. Berrange #include "qapi/qobject-input-visitor.h" 31b3db211fSDaniel P. Berrange #include "qapi/qobject-output-visitor.h" 32f348b6d1SVeronia Bahaa #include "qemu/cutils.h" 33baacf047SPaolo Bonzini 34baacf047SPaolo Bonzini #ifndef AI_ADDRCONFIG 35baacf047SPaolo Bonzini # define AI_ADDRCONFIG 0 36baacf047SPaolo Bonzini #endif 37340849a9SDaniel P. Berrange 383de3d698SWolfgang Bumiller #ifndef AI_V4MAPPED 393de3d698SWolfgang Bumiller # define AI_V4MAPPED 0 403de3d698SWolfgang Bumiller #endif 41baacf047SPaolo Bonzini 426979a813SDaniel P. Berrange #ifndef AI_NUMERICSERV 436979a813SDaniel P. Berrange # define AI_NUMERICSERV 0 446979a813SDaniel P. Berrange #endif 456979a813SDaniel P. Berrange 46baacf047SPaolo Bonzini 47baacf047SPaolo Bonzini static int inet_getport(struct addrinfo *e) 48baacf047SPaolo Bonzini { 49baacf047SPaolo Bonzini struct sockaddr_in *i4; 50baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 51baacf047SPaolo Bonzini 52baacf047SPaolo Bonzini switch (e->ai_family) { 53baacf047SPaolo Bonzini case PF_INET6: 54baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 55baacf047SPaolo Bonzini return ntohs(i6->sin6_port); 56baacf047SPaolo Bonzini case PF_INET: 57baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 58baacf047SPaolo Bonzini return ntohs(i4->sin_port); 59baacf047SPaolo Bonzini default: 60baacf047SPaolo Bonzini return 0; 61baacf047SPaolo Bonzini } 62baacf047SPaolo Bonzini } 63baacf047SPaolo Bonzini 64baacf047SPaolo Bonzini static void inet_setport(struct addrinfo *e, int port) 65baacf047SPaolo Bonzini { 66baacf047SPaolo Bonzini struct sockaddr_in *i4; 67baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 68baacf047SPaolo Bonzini 69baacf047SPaolo Bonzini switch (e->ai_family) { 70baacf047SPaolo Bonzini case PF_INET6: 71baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 72baacf047SPaolo Bonzini i6->sin6_port = htons(port); 73baacf047SPaolo Bonzini break; 74baacf047SPaolo Bonzini case PF_INET: 75baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 76baacf047SPaolo Bonzini i4->sin_port = htons(port); 77baacf047SPaolo Bonzini break; 78baacf047SPaolo Bonzini } 79baacf047SPaolo Bonzini } 80baacf047SPaolo Bonzini 81a589569fSWenchao Xia NetworkAddressFamily inet_netfamily(int family) 82a589569fSWenchao Xia { 83a589569fSWenchao Xia switch (family) { 84a589569fSWenchao Xia case PF_INET6: return NETWORK_ADDRESS_FAMILY_IPV6; 85a589569fSWenchao Xia case PF_INET: return NETWORK_ADDRESS_FAMILY_IPV4; 86a589569fSWenchao Xia case PF_UNIX: return NETWORK_ADDRESS_FAMILY_UNIX; 876a02c806SStefan Hajnoczi #ifdef CONFIG_AF_VSOCK 886a02c806SStefan Hajnoczi case PF_VSOCK: return NETWORK_ADDRESS_FAMILY_VSOCK; 896a02c806SStefan Hajnoczi #endif /* CONFIG_AF_VSOCK */ 90a589569fSWenchao Xia } 91a589569fSWenchao Xia return NETWORK_ADDRESS_FAMILY_UNKNOWN; 92a589569fSWenchao Xia } 93a589569fSWenchao Xia 941856835dSDaniel P. Berrange /* 951856835dSDaniel P. Berrange * Matrix we're trying to apply 961856835dSDaniel P. Berrange * 971856835dSDaniel P. Berrange * ipv4 ipv6 family 981856835dSDaniel P. Berrange * - - PF_UNSPEC 991856835dSDaniel P. Berrange * - f PF_INET 1001856835dSDaniel P. Berrange * - t PF_INET6 1011856835dSDaniel P. Berrange * f - PF_INET6 1021856835dSDaniel P. Berrange * f f <error> 1031856835dSDaniel P. Berrange * f t PF_INET6 1041856835dSDaniel P. Berrange * t - PF_INET 1051856835dSDaniel P. Berrange * t f PF_INET 10694bc0d19SDaniel P. Berrange * t t PF_INET6/PF_UNSPEC 1071856835dSDaniel P. Berrange * 108d43eda3dSWei Jiangang * NB, this matrix is only about getting the necessary results 1091856835dSDaniel P. Berrange * from getaddrinfo(). Some of the cases require further work 1101856835dSDaniel P. Berrange * after reading results from getaddrinfo in order to fully 11194bc0d19SDaniel P. Berrange * apply the logic the end user wants. 11294bc0d19SDaniel P. Berrange * 11394bc0d19SDaniel P. Berrange * In the first and last cases, we must set IPV6_V6ONLY=0 11494bc0d19SDaniel P. Berrange * when binding, to allow a single listener to potentially 11594bc0d19SDaniel P. Berrange * accept both IPv4+6 addresses. 1161856835dSDaniel P. Berrange */ 117c1b412f1SDaniel P. Berrange int inet_ai_family_from_address(InetSocketAddress *addr, 1181856835dSDaniel P. Berrange Error **errp) 1191856835dSDaniel P. Berrange { 1201856835dSDaniel P. Berrange if (addr->has_ipv6 && addr->has_ipv4 && 1211856835dSDaniel P. Berrange !addr->ipv6 && !addr->ipv4) { 1221856835dSDaniel P. Berrange error_setg(errp, "Cannot disable IPv4 and IPv6 at same time"); 1231856835dSDaniel P. Berrange return PF_UNSPEC; 1241856835dSDaniel P. Berrange } 12594bc0d19SDaniel P. Berrange if ((addr->has_ipv6 && addr->ipv6) && (addr->has_ipv4 && addr->ipv4)) { 12694bc0d19SDaniel P. Berrange /* 12794bc0d19SDaniel P. Berrange * Some backends can only do a single listener. In that case 12894bc0d19SDaniel P. Berrange * we want empty hostname to resolve to "::" and then use the 12994bc0d19SDaniel P. Berrange * flag IPV6_V6ONLY==0 to get both protocols on 1 socket. This 13094bc0d19SDaniel P. Berrange * doesn't work for addresses other than "", so they're just 13194bc0d19SDaniel P. Berrange * inevitably broken until multiple listeners can be used, 13294bc0d19SDaniel P. Berrange * and thus we honour getaddrinfo automatic protocol detection 13394bc0d19SDaniel P. Berrange * Once all backends do multi-listener, remove the PF_INET6 13494bc0d19SDaniel P. Berrange * branch entirely. 13594bc0d19SDaniel P. Berrange */ 13694bc0d19SDaniel P. Berrange if (!addr->host || g_str_equal(addr->host, "")) { 13794bc0d19SDaniel P. Berrange return PF_INET6; 13894bc0d19SDaniel P. Berrange } else { 13994bc0d19SDaniel P. Berrange return PF_UNSPEC; 14094bc0d19SDaniel P. Berrange } 14194bc0d19SDaniel P. Berrange } 1421856835dSDaniel P. Berrange if ((addr->has_ipv6 && addr->ipv6) || (addr->has_ipv4 && !addr->ipv4)) { 1431856835dSDaniel P. Berrange return PF_INET6; 1441856835dSDaniel P. Berrange } 1451856835dSDaniel P. Berrange if ((addr->has_ipv4 && addr->ipv4) || (addr->has_ipv6 && !addr->ipv6)) { 1461856835dSDaniel P. Berrange return PF_INET; 1471856835dSDaniel P. Berrange } 1481856835dSDaniel P. Berrange return PF_UNSPEC; 1491856835dSDaniel P. Berrange } 1501856835dSDaniel P. Berrange 15139f80521SKnut Omang static int create_fast_reuse_socket(struct addrinfo *e) 15239f80521SKnut Omang { 15339f80521SKnut Omang int slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); 15439f80521SKnut Omang if (slisten < 0) { 15539f80521SKnut Omang return -1; 15639f80521SKnut Omang } 15739f80521SKnut Omang socket_set_fast_reuse(slisten); 15839f80521SKnut Omang return slisten; 15939f80521SKnut Omang } 16039f80521SKnut Omang 16189382c3dSKnut Omang static int try_bind(int socket, InetSocketAddress *saddr, struct addrinfo *e) 16289382c3dSKnut Omang { 16389382c3dSKnut Omang #ifndef IPV6_V6ONLY 16489382c3dSKnut Omang return bind(socket, e->ai_addr, e->ai_addrlen); 16589382c3dSKnut Omang #else 16689382c3dSKnut Omang /* 16789382c3dSKnut Omang * Deals with first & last cases in matrix in comment 16889382c3dSKnut Omang * for inet_ai_family_from_address(). 16989382c3dSKnut Omang */ 17089382c3dSKnut Omang int v6only = 17189382c3dSKnut Omang ((!saddr->has_ipv4 && !saddr->has_ipv6) || 17289382c3dSKnut Omang (saddr->has_ipv4 && saddr->ipv4 && 17389382c3dSKnut Omang saddr->has_ipv6 && saddr->ipv6)) ? 0 : 1; 17489382c3dSKnut Omang int stat; 17589382c3dSKnut Omang 17689382c3dSKnut Omang rebind: 17789382c3dSKnut Omang if (e->ai_family == PF_INET6) { 17889382c3dSKnut Omang qemu_setsockopt(socket, IPPROTO_IPV6, IPV6_V6ONLY, &v6only, 17989382c3dSKnut Omang sizeof(v6only)); 18089382c3dSKnut Omang } 18189382c3dSKnut Omang 18289382c3dSKnut Omang stat = bind(socket, e->ai_addr, e->ai_addrlen); 18389382c3dSKnut Omang if (!stat) { 18489382c3dSKnut Omang return 0; 18589382c3dSKnut Omang } 18689382c3dSKnut Omang 18789382c3dSKnut Omang /* If we got EADDRINUSE from an IPv6 bind & v6only is unset, 18889382c3dSKnut Omang * it could be that the IPv4 port is already claimed, so retry 18989382c3dSKnut Omang * with v6only set 19089382c3dSKnut Omang */ 19189382c3dSKnut Omang if (e->ai_family == PF_INET6 && errno == EADDRINUSE && !v6only) { 19289382c3dSKnut Omang v6only = 1; 19389382c3dSKnut Omang goto rebind; 19489382c3dSKnut Omang } 19589382c3dSKnut Omang return stat; 19689382c3dSKnut Omang #endif 19789382c3dSKnut Omang } 19889382c3dSKnut Omang 1991856835dSDaniel P. Berrange static int inet_listen_saddr(InetSocketAddress *saddr, 2001856835dSDaniel P. Berrange int port_offset, 2011856835dSDaniel P. Berrange Error **errp) 202baacf047SPaolo Bonzini { 203baacf047SPaolo Bonzini struct addrinfo ai,*res,*e; 204baacf047SPaolo Bonzini char port[33]; 205baacf047SPaolo Bonzini char uaddr[INET6_ADDRSTRLEN+1]; 206baacf047SPaolo Bonzini char uport[33]; 2079cf961bbSKnut Omang int rc, port_min, port_max, p; 20810a7b7e6SDaniel P. Berrange int slisten = -1; 2099cf961bbSKnut Omang int saved_errno = 0; 2109cf961bbSKnut Omang bool socket_created = false; 2111856835dSDaniel P. Berrange Error *err = NULL; 212baacf047SPaolo Bonzini 213baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 2143de3d698SWolfgang Bumiller ai.ai_flags = AI_PASSIVE; 2156979a813SDaniel P. Berrange if (saddr->has_numeric && saddr->numeric) { 2166979a813SDaniel P. Berrange ai.ai_flags |= AI_NUMERICHOST | AI_NUMERICSERV; 2176979a813SDaniel P. Berrange } 2181856835dSDaniel P. Berrange ai.ai_family = inet_ai_family_from_address(saddr, &err); 219baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 220baacf047SPaolo Bonzini 2211856835dSDaniel P. Berrange if (err) { 2221856835dSDaniel P. Berrange error_propagate(errp, err); 2231856835dSDaniel P. Berrange return -1; 2241856835dSDaniel P. Berrange } 2251856835dSDaniel P. Berrange 2261856835dSDaniel P. Berrange if (saddr->host == NULL) { 2270983f5e6SDaniel P. Berrange error_setg(errp, "host not specified"); 228baacf047SPaolo Bonzini return -1; 229baacf047SPaolo Bonzini } 2301856835dSDaniel P. Berrange if (saddr->port != NULL) { 2311856835dSDaniel P. Berrange pstrcpy(port, sizeof(port), saddr->port); 2320983f5e6SDaniel P. Berrange } else { 2330983f5e6SDaniel P. Berrange port[0] = '\0'; 2340983f5e6SDaniel P. Berrange } 235baacf047SPaolo Bonzini 236baacf047SPaolo Bonzini /* lookup */ 2378bc89127SGerd Hoffmann if (port_offset) { 2388bc89127SGerd Hoffmann unsigned long long baseport; 2390983f5e6SDaniel P. Berrange if (strlen(port) == 0) { 2400983f5e6SDaniel P. Berrange error_setg(errp, "port not specified"); 2410983f5e6SDaniel P. Berrange return -1; 2420983f5e6SDaniel P. Berrange } 2438bc89127SGerd Hoffmann if (parse_uint_full(port, &baseport, 10) < 0) { 2448bc89127SGerd Hoffmann error_setg(errp, "can't convert to a number: %s", port); 2458bc89127SGerd Hoffmann return -1; 2468bc89127SGerd Hoffmann } 2478bc89127SGerd Hoffmann if (baseport > 65535 || 2488bc89127SGerd Hoffmann baseport + port_offset > 65535) { 2498bc89127SGerd Hoffmann error_setg(errp, "port %s out of range", port); 2508bc89127SGerd Hoffmann return -1; 2518bc89127SGerd Hoffmann } 2528bc89127SGerd Hoffmann snprintf(port, sizeof(port), "%d", (int)baseport + port_offset); 2538bc89127SGerd Hoffmann } 2541856835dSDaniel P. Berrange rc = getaddrinfo(strlen(saddr->host) ? saddr->host : NULL, 2550983f5e6SDaniel P. Berrange strlen(port) ? port : NULL, &ai, &res); 256baacf047SPaolo Bonzini if (rc != 0) { 2571856835dSDaniel P. Berrange error_setg(errp, "address resolution failed for %s:%s: %s", 2581856835dSDaniel P. Berrange saddr->host, port, gai_strerror(rc)); 259baacf047SPaolo Bonzini return -1; 260baacf047SPaolo Bonzini } 261baacf047SPaolo Bonzini 2629cf961bbSKnut Omang /* create socket + bind/listen */ 263baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 264baacf047SPaolo Bonzini getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, 265baacf047SPaolo Bonzini uaddr,INET6_ADDRSTRLEN,uport,32, 266baacf047SPaolo Bonzini NI_NUMERICHOST | NI_NUMERICSERV); 26739f80521SKnut Omang 268baacf047SPaolo Bonzini port_min = inet_getport(e); 2691856835dSDaniel P. Berrange port_max = saddr->has_to ? saddr->to + port_offset : port_min; 270baacf047SPaolo Bonzini for (p = port_min; p <= port_max; p++) { 271baacf047SPaolo Bonzini inet_setport(e, p); 27210a7b7e6SDaniel P. Berrange 27310a7b7e6SDaniel P. Berrange slisten = create_fast_reuse_socket(e); 27410a7b7e6SDaniel P. Berrange if (slisten < 0) { 27510a7b7e6SDaniel P. Berrange /* First time we expect we might fail to create the socket 27610a7b7e6SDaniel P. Berrange * eg if 'e' has AF_INET6 but ipv6 kmod is not loaded. 27710a7b7e6SDaniel P. Berrange * Later iterations should always succeed if first iteration 27810a7b7e6SDaniel P. Berrange * worked though, so treat that as fatal. 27910a7b7e6SDaniel P. Berrange */ 28010a7b7e6SDaniel P. Berrange if (p == port_min) { 2819cf961bbSKnut Omang continue; 2829cf961bbSKnut Omang } else { 28310a7b7e6SDaniel P. Berrange error_setg_errno(errp, errno, 28410a7b7e6SDaniel P. Berrange "Failed to recreate failed listening socket"); 2859cf961bbSKnut Omang goto listen_failed; 2869cf961bbSKnut Omang } 2879cf961bbSKnut Omang } 28810a7b7e6SDaniel P. Berrange socket_created = true; 28910a7b7e6SDaniel P. Berrange 29010a7b7e6SDaniel P. Berrange rc = try_bind(slisten, saddr, e); 29110a7b7e6SDaniel P. Berrange if (rc < 0) { 29210a7b7e6SDaniel P. Berrange if (errno != EADDRINUSE) { 29310a7b7e6SDaniel P. Berrange error_setg_errno(errp, errno, "Failed to bind socket"); 29410a7b7e6SDaniel P. Berrange goto listen_failed; 29510a7b7e6SDaniel P. Berrange } 29610a7b7e6SDaniel P. Berrange } else { 2979cf961bbSKnut Omang if (!listen(slisten, 1)) { 2989cf961bbSKnut Omang goto listen_ok; 2999cf961bbSKnut Omang } 3009cf961bbSKnut Omang if (errno != EADDRINUSE) { 3019cf961bbSKnut Omang error_setg_errno(errp, errno, "Failed to listen on socket"); 3029cf961bbSKnut Omang goto listen_failed; 3039cf961bbSKnut Omang } 30410a7b7e6SDaniel P. Berrange } 3059cf961bbSKnut Omang /* Someone else managed to bind to the same port and beat us 3069cf961bbSKnut Omang * to listen on it! Socket semantics does not allow us to 3079cf961bbSKnut Omang * recover from this situation, so we need to recreate the 3089cf961bbSKnut Omang * socket to allow bind attempts for subsequent ports: 3099cf961bbSKnut Omang */ 3109cf961bbSKnut Omang closesocket(slisten); 31110a7b7e6SDaniel P. Berrange slisten = -1; 312baacf047SPaolo Bonzini } 313baacf047SPaolo Bonzini } 3149cf961bbSKnut Omang error_setg_errno(errp, errno, 3159cf961bbSKnut Omang socket_created ? 3169cf961bbSKnut Omang "Failed to find an available port" : 3179cf961bbSKnut Omang "Failed to create a socket"); 3189cf961bbSKnut Omang listen_failed: 3199cf961bbSKnut Omang saved_errno = errno; 3209cf961bbSKnut Omang if (slisten >= 0) { 321baacf047SPaolo Bonzini closesocket(slisten); 322baacf047SPaolo Bonzini } 323baacf047SPaolo Bonzini freeaddrinfo(res); 3249cf961bbSKnut Omang errno = saved_errno; 325baacf047SPaolo Bonzini return -1; 326baacf047SPaolo Bonzini 3279cf961bbSKnut Omang listen_ok: 328baacf047SPaolo Bonzini freeaddrinfo(res); 329baacf047SPaolo Bonzini return slisten; 330baacf047SPaolo Bonzini } 331baacf047SPaolo Bonzini 332baacf047SPaolo Bonzini #ifdef _WIN32 333baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 334baacf047SPaolo Bonzini ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) 335baacf047SPaolo Bonzini #else 336baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 337baacf047SPaolo Bonzini ((rc) == -EINPROGRESS) 338baacf047SPaolo Bonzini #endif 339baacf047SPaolo Bonzini 340b2587932SCao jin static int inet_connect_addr(struct addrinfo *addr, Error **errp); 341baacf047SPaolo Bonzini 342b2587932SCao jin static int inet_connect_addr(struct addrinfo *addr, Error **errp) 343baacf047SPaolo Bonzini { 344baacf047SPaolo Bonzini int sock, rc; 345baacf047SPaolo Bonzini 346baacf047SPaolo Bonzini sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); 347baacf047SPaolo Bonzini if (sock < 0) { 348235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 349baacf047SPaolo Bonzini return -1; 350baacf047SPaolo Bonzini } 35104fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 352b2587932SCao jin 353baacf047SPaolo Bonzini /* connect to peer */ 354baacf047SPaolo Bonzini do { 355baacf047SPaolo Bonzini rc = 0; 356baacf047SPaolo Bonzini if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { 357b16a44e1SDaniel P. Berrange rc = -errno; 358baacf047SPaolo Bonzini } 359baacf047SPaolo Bonzini } while (rc == -EINTR); 360baacf047SPaolo Bonzini 361b2587932SCao jin if (rc < 0) { 362235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to connect socket"); 363baacf047SPaolo Bonzini closesocket(sock); 364baacf047SPaolo Bonzini return -1; 365baacf047SPaolo Bonzini } 366b2587932SCao jin 367baacf047SPaolo Bonzini return sock; 368baacf047SPaolo Bonzini } 369baacf047SPaolo Bonzini 3702942e420SDaniel P. Berrange static struct addrinfo *inet_parse_connect_saddr(InetSocketAddress *saddr, 3712942e420SDaniel P. Berrange Error **errp) 372baacf047SPaolo Bonzini { 373baacf047SPaolo Bonzini struct addrinfo ai, *res; 374baacf047SPaolo Bonzini int rc; 3752942e420SDaniel P. Berrange Error *err = NULL; 376340849a9SDaniel P. Berrange static int useV4Mapped = 1; 377baacf047SPaolo Bonzini 378baacf047SPaolo Bonzini memset(&ai, 0, sizeof(ai)); 379baacf047SPaolo Bonzini 380340849a9SDaniel P. Berrange ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; 381340849a9SDaniel P. Berrange if (atomic_read(&useV4Mapped)) { 382340849a9SDaniel P. Berrange ai.ai_flags |= AI_V4MAPPED; 383340849a9SDaniel P. Berrange } 3842942e420SDaniel P. Berrange ai.ai_family = inet_ai_family_from_address(saddr, &err); 385baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 386baacf047SPaolo Bonzini 3872942e420SDaniel P. Berrange if (err) { 3882942e420SDaniel P. Berrange error_propagate(errp, err); 3892942e420SDaniel P. Berrange return NULL; 3902942e420SDaniel P. Berrange } 3912942e420SDaniel P. Berrange 3922942e420SDaniel P. Berrange if (saddr->host == NULL || saddr->port == NULL) { 393baacf047SPaolo Bonzini error_setg(errp, "host and/or port not specified"); 394baacf047SPaolo Bonzini return NULL; 395baacf047SPaolo Bonzini } 396baacf047SPaolo Bonzini 397baacf047SPaolo Bonzini /* lookup */ 3982942e420SDaniel P. Berrange rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); 399340849a9SDaniel P. Berrange 400340849a9SDaniel P. Berrange /* At least FreeBSD and OS-X 10.6 declare AI_V4MAPPED but 401340849a9SDaniel P. Berrange * then don't implement it in their getaddrinfo(). Detect 402340849a9SDaniel P. Berrange * this and retry without the flag since that's preferrable 403340849a9SDaniel P. Berrange * to a fatal error 404340849a9SDaniel P. Berrange */ 405340849a9SDaniel P. Berrange if (rc == EAI_BADFLAGS && 406340849a9SDaniel P. Berrange (ai.ai_flags & AI_V4MAPPED)) { 407340849a9SDaniel P. Berrange atomic_set(&useV4Mapped, 0); 408340849a9SDaniel P. Berrange ai.ai_flags &= ~AI_V4MAPPED; 409340849a9SDaniel P. Berrange rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); 410340849a9SDaniel P. Berrange } 411baacf047SPaolo Bonzini if (rc != 0) { 4122942e420SDaniel P. Berrange error_setg(errp, "address resolution failed for %s:%s: %s", 4132942e420SDaniel P. Berrange saddr->host, saddr->port, gai_strerror(rc)); 414baacf047SPaolo Bonzini return NULL; 415baacf047SPaolo Bonzini } 416baacf047SPaolo Bonzini return res; 417baacf047SPaolo Bonzini } 418baacf047SPaolo Bonzini 419baacf047SPaolo Bonzini /** 420baacf047SPaolo Bonzini * Create a socket and connect it to an address. 421baacf047SPaolo Bonzini * 4222942e420SDaniel P. Berrange * @saddr: Inet socket address specification 423baacf047SPaolo Bonzini * @errp: set on error 424baacf047SPaolo Bonzini * 425baacf047SPaolo Bonzini * Returns: -1 on error, file descriptor on success. 426baacf047SPaolo Bonzini */ 427b2587932SCao jin int inet_connect_saddr(InetSocketAddress *saddr, Error **errp) 428baacf047SPaolo Bonzini { 4293f9286b7SMarkus Armbruster Error *local_err = NULL; 430baacf047SPaolo Bonzini struct addrinfo *res, *e; 431baacf047SPaolo Bonzini int sock = -1; 432baacf047SPaolo Bonzini 4332942e420SDaniel P. Berrange res = inet_parse_connect_saddr(saddr, errp); 434baacf047SPaolo Bonzini if (!res) { 435baacf047SPaolo Bonzini return -1; 436baacf047SPaolo Bonzini } 437baacf047SPaolo Bonzini 438baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 4393f9286b7SMarkus Armbruster error_free(local_err); 4403f9286b7SMarkus Armbruster local_err = NULL; 441b2587932SCao jin sock = inet_connect_addr(e, &local_err); 4423f9286b7SMarkus Armbruster if (sock >= 0) { 443baacf047SPaolo Bonzini break; 444baacf047SPaolo Bonzini } 445baacf047SPaolo Bonzini } 4463f9286b7SMarkus Armbruster 4473f9286b7SMarkus Armbruster if (sock < 0) { 4483f9286b7SMarkus Armbruster error_propagate(errp, local_err); 4493f9286b7SMarkus Armbruster } 450b2587932SCao jin 451baacf047SPaolo Bonzini freeaddrinfo(res); 452baacf047SPaolo Bonzini return sock; 453baacf047SPaolo Bonzini } 454baacf047SPaolo Bonzini 4558b39910eSDaniel P. Berrange static int inet_dgram_saddr(InetSocketAddress *sraddr, 4568b39910eSDaniel P. Berrange InetSocketAddress *sladdr, 4578b39910eSDaniel P. Berrange Error **errp) 458baacf047SPaolo Bonzini { 459baacf047SPaolo Bonzini struct addrinfo ai, *peer = NULL, *local = NULL; 460baacf047SPaolo Bonzini const char *addr; 461baacf047SPaolo Bonzini const char *port; 462baacf047SPaolo Bonzini int sock = -1, rc; 4638b39910eSDaniel P. Berrange Error *err = NULL; 464baacf047SPaolo Bonzini 465baacf047SPaolo Bonzini /* lookup peer addr */ 466baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 4673de3d698SWolfgang Bumiller ai.ai_flags = AI_CANONNAME | AI_V4MAPPED | AI_ADDRCONFIG; 4688b39910eSDaniel P. Berrange ai.ai_family = inet_ai_family_from_address(sraddr, &err); 469baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 470baacf047SPaolo Bonzini 4718b39910eSDaniel P. Berrange if (err) { 4728b39910eSDaniel P. Berrange error_propagate(errp, err); 47358c652c0SPaolo Bonzini goto err; 4748b39910eSDaniel P. Berrange } 4758b39910eSDaniel P. Berrange 4768b39910eSDaniel P. Berrange addr = sraddr->host; 4778b39910eSDaniel P. Berrange port = sraddr->port; 478baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 479baacf047SPaolo Bonzini addr = "localhost"; 480baacf047SPaolo Bonzini } 481baacf047SPaolo Bonzini if (port == NULL || strlen(port) == 0) { 482baacf047SPaolo Bonzini error_setg(errp, "remote port not specified"); 48358c652c0SPaolo Bonzini goto err; 484baacf047SPaolo Bonzini } 485baacf047SPaolo Bonzini 4869cd1883cSCao jin if ((rc = getaddrinfo(addr, port, &ai, &peer)) != 0) { 487baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 488baacf047SPaolo Bonzini gai_strerror(rc)); 48958c652c0SPaolo Bonzini goto err; 490baacf047SPaolo Bonzini } 491baacf047SPaolo Bonzini 492baacf047SPaolo Bonzini /* lookup local addr */ 493baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 494baacf047SPaolo Bonzini ai.ai_flags = AI_PASSIVE; 495baacf047SPaolo Bonzini ai.ai_family = peer->ai_family; 496baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 497baacf047SPaolo Bonzini 4988b39910eSDaniel P. Berrange if (sladdr) { 4998b39910eSDaniel P. Berrange addr = sladdr->host; 5008b39910eSDaniel P. Berrange port = sladdr->port; 501baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 502baacf047SPaolo Bonzini addr = NULL; 503baacf047SPaolo Bonzini } 5048b39910eSDaniel P. Berrange if (!port || strlen(port) == 0) { 505baacf047SPaolo Bonzini port = "0"; 5068b39910eSDaniel P. Berrange } 5078b39910eSDaniel P. Berrange } else { 5088b39910eSDaniel P. Berrange addr = NULL; 5098b39910eSDaniel P. Berrange port = "0"; 5108b39910eSDaniel P. Berrange } 511baacf047SPaolo Bonzini 5129cd1883cSCao jin if ((rc = getaddrinfo(addr, port, &ai, &local)) != 0) { 513baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 514baacf047SPaolo Bonzini gai_strerror(rc)); 515baacf047SPaolo Bonzini goto err; 516baacf047SPaolo Bonzini } 517baacf047SPaolo Bonzini 518baacf047SPaolo Bonzini /* create socket */ 519baacf047SPaolo Bonzini sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); 520baacf047SPaolo Bonzini if (sock < 0) { 521235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 522baacf047SPaolo Bonzini goto err; 523baacf047SPaolo Bonzini } 52404fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 525baacf047SPaolo Bonzini 526baacf047SPaolo Bonzini /* bind socket */ 527baacf047SPaolo Bonzini if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { 528235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to bind socket"); 529baacf047SPaolo Bonzini goto err; 530baacf047SPaolo Bonzini } 531baacf047SPaolo Bonzini 532baacf047SPaolo Bonzini /* connect to peer */ 533baacf047SPaolo Bonzini if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { 534235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to connect socket"); 535baacf047SPaolo Bonzini goto err; 536baacf047SPaolo Bonzini } 537baacf047SPaolo Bonzini 538baacf047SPaolo Bonzini freeaddrinfo(local); 539baacf047SPaolo Bonzini freeaddrinfo(peer); 540baacf047SPaolo Bonzini return sock; 541baacf047SPaolo Bonzini 542baacf047SPaolo Bonzini err: 54326015051SCao jin if (sock != -1) { 544baacf047SPaolo Bonzini closesocket(sock); 54526015051SCao jin } 54626015051SCao jin if (local) { 547baacf047SPaolo Bonzini freeaddrinfo(local); 54826015051SCao jin } 54926015051SCao jin if (peer) { 550baacf047SPaolo Bonzini freeaddrinfo(peer); 55126015051SCao jin } 55226015051SCao jin 553baacf047SPaolo Bonzini return -1; 554baacf047SPaolo Bonzini } 555baacf047SPaolo Bonzini 556baacf047SPaolo Bonzini /* compatibility wrapper */ 5573e32370aSDaniel P. Berrange static int inet_parse_flag(const char *flagname, const char *optstr, bool *val, 5583e32370aSDaniel P. Berrange Error **errp) 5593e32370aSDaniel P. Berrange { 5603e32370aSDaniel P. Berrange char *end; 5613e32370aSDaniel P. Berrange size_t len; 5623e32370aSDaniel P. Berrange 5633e32370aSDaniel P. Berrange end = strstr(optstr, ","); 5643e32370aSDaniel P. Berrange if (end) { 5653e32370aSDaniel P. Berrange if (end[1] == ',') { /* Reject 'ipv6=on,,foo' */ 5663e32370aSDaniel P. Berrange error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr); 5673e32370aSDaniel P. Berrange return -1; 5683e32370aSDaniel P. Berrange } 5693e32370aSDaniel P. Berrange len = end - optstr; 5703e32370aSDaniel P. Berrange } else { 5713e32370aSDaniel P. Berrange len = strlen(optstr); 5723e32370aSDaniel P. Berrange } 5733e32370aSDaniel P. Berrange if (len == 0 || (len == 3 && strncmp(optstr, "=on", len) == 0)) { 5743e32370aSDaniel P. Berrange *val = true; 5753e32370aSDaniel P. Berrange } else if (len == 4 && strncmp(optstr, "=off", len) == 0) { 5763e32370aSDaniel P. Berrange *val = false; 5773e32370aSDaniel P. Berrange } else { 5783e32370aSDaniel P. Berrange error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr); 5793e32370aSDaniel P. Berrange return -1; 5803e32370aSDaniel P. Berrange } 5813e32370aSDaniel P. Berrange return 0; 5823e32370aSDaniel P. Berrange } 5833e32370aSDaniel P. Berrange 5840785bd7aSMarkus Armbruster int inet_parse(InetSocketAddress *addr, const char *str, Error **errp) 585baacf047SPaolo Bonzini { 586baacf047SPaolo Bonzini const char *optstr, *h; 58755a10996SKevin Wolf char host[65]; 588baacf047SPaolo Bonzini char port[33]; 589baacf047SPaolo Bonzini int to; 590baacf047SPaolo Bonzini int pos; 5913e32370aSDaniel P. Berrange char *begin; 592baacf047SPaolo Bonzini 5930785bd7aSMarkus Armbruster memset(addr, 0, sizeof(*addr)); 594baacf047SPaolo Bonzini 595baacf047SPaolo Bonzini /* parse address */ 596baacf047SPaolo Bonzini if (str[0] == ':') { 597baacf047SPaolo Bonzini /* no host given */ 598baacf047SPaolo Bonzini host[0] = '\0'; 5999cd1883cSCao jin if (sscanf(str, ":%32[^,]%n", port, &pos) != 1) { 600baacf047SPaolo Bonzini error_setg(errp, "error parsing port in address '%s'", str); 6010785bd7aSMarkus Armbruster return -1; 602baacf047SPaolo Bonzini } 603baacf047SPaolo Bonzini } else if (str[0] == '[') { 604baacf047SPaolo Bonzini /* IPv6 addr */ 6059cd1883cSCao jin if (sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos) != 2) { 606baacf047SPaolo Bonzini error_setg(errp, "error parsing IPv6 address '%s'", str); 6070785bd7aSMarkus Armbruster return -1; 608baacf047SPaolo Bonzini } 609baacf047SPaolo Bonzini } else { 610391b7b97SJán Tomko /* hostname or IPv4 addr */ 6119cd1883cSCao jin if (sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos) != 2) { 612baacf047SPaolo Bonzini error_setg(errp, "error parsing address '%s'", str); 6130785bd7aSMarkus Armbruster return -1; 614baacf047SPaolo Bonzini } 615baacf047SPaolo Bonzini } 616baacf047SPaolo Bonzini 617baacf047SPaolo Bonzini addr->host = g_strdup(host); 618baacf047SPaolo Bonzini addr->port = g_strdup(port); 619baacf047SPaolo Bonzini 620baacf047SPaolo Bonzini /* parse options */ 621baacf047SPaolo Bonzini optstr = str + pos; 622baacf047SPaolo Bonzini h = strstr(optstr, ",to="); 623baacf047SPaolo Bonzini if (h) { 624baacf047SPaolo Bonzini h += 4; 625baacf047SPaolo Bonzini if (sscanf(h, "%d%n", &to, &pos) != 1 || 626baacf047SPaolo Bonzini (h[pos] != '\0' && h[pos] != ',')) { 627baacf047SPaolo Bonzini error_setg(errp, "error parsing to= argument"); 6280785bd7aSMarkus Armbruster return -1; 629baacf047SPaolo Bonzini } 630baacf047SPaolo Bonzini addr->has_to = true; 631baacf047SPaolo Bonzini addr->to = to; 632baacf047SPaolo Bonzini } 6333e32370aSDaniel P. Berrange begin = strstr(optstr, ",ipv4"); 6343e32370aSDaniel P. Berrange if (begin) { 6353e32370aSDaniel P. Berrange if (inet_parse_flag("ipv4", begin + 5, &addr->ipv4, errp) < 0) { 6363e32370aSDaniel P. Berrange return -1; 637baacf047SPaolo Bonzini } 6383e32370aSDaniel P. Berrange addr->has_ipv4 = true; 6393e32370aSDaniel P. Berrange } 6403e32370aSDaniel P. Berrange begin = strstr(optstr, ",ipv6"); 6413e32370aSDaniel P. Berrange if (begin) { 6423e32370aSDaniel P. Berrange if (inet_parse_flag("ipv6", begin + 5, &addr->ipv6, errp) < 0) { 6433e32370aSDaniel P. Berrange return -1; 6443e32370aSDaniel P. Berrange } 6453e32370aSDaniel P. Berrange addr->has_ipv6 = true; 646baacf047SPaolo Bonzini } 6470785bd7aSMarkus Armbruster return 0; 648baacf047SPaolo Bonzini } 649baacf047SPaolo Bonzini 650baacf047SPaolo Bonzini 651baacf047SPaolo Bonzini /** 652baacf047SPaolo Bonzini * Create a blocking socket and connect it to an address. 653baacf047SPaolo Bonzini * 654baacf047SPaolo Bonzini * @str: address string 655baacf047SPaolo Bonzini * @errp: set in case of an error 656baacf047SPaolo Bonzini * 657baacf047SPaolo Bonzini * Returns -1 in case of error, file descriptor on success 658baacf047SPaolo Bonzini **/ 659baacf047SPaolo Bonzini int inet_connect(const char *str, Error **errp) 660baacf047SPaolo Bonzini { 661baacf047SPaolo Bonzini int sock = -1; 6620785bd7aSMarkus Armbruster InetSocketAddress *addr = g_new(InetSocketAddress, 1); 663baacf047SPaolo Bonzini 6640785bd7aSMarkus Armbruster if (!inet_parse(addr, str, errp)) { 665b2587932SCao jin sock = inet_connect_saddr(addr, errp); 666baacf047SPaolo Bonzini } 6670785bd7aSMarkus Armbruster qapi_free_InetSocketAddress(addr); 668baacf047SPaolo Bonzini return sock; 669baacf047SPaolo Bonzini } 670baacf047SPaolo Bonzini 6716a02c806SStefan Hajnoczi #ifdef CONFIG_AF_VSOCK 6726a02c806SStefan Hajnoczi static bool vsock_parse_vaddr_to_sockaddr(const VsockSocketAddress *vaddr, 6736a02c806SStefan Hajnoczi struct sockaddr_vm *svm, 6746a02c806SStefan Hajnoczi Error **errp) 6756a02c806SStefan Hajnoczi { 6766a02c806SStefan Hajnoczi unsigned long long val; 6776a02c806SStefan Hajnoczi 6786a02c806SStefan Hajnoczi memset(svm, 0, sizeof(*svm)); 6796a02c806SStefan Hajnoczi svm->svm_family = AF_VSOCK; 6806a02c806SStefan Hajnoczi 6816a02c806SStefan Hajnoczi if (parse_uint_full(vaddr->cid, &val, 10) < 0 || 6826a02c806SStefan Hajnoczi val > UINT32_MAX) { 6836a02c806SStefan Hajnoczi error_setg(errp, "Failed to parse cid '%s'", vaddr->cid); 6846a02c806SStefan Hajnoczi return false; 6856a02c806SStefan Hajnoczi } 6866a02c806SStefan Hajnoczi svm->svm_cid = val; 6876a02c806SStefan Hajnoczi 6886a02c806SStefan Hajnoczi if (parse_uint_full(vaddr->port, &val, 10) < 0 || 6896a02c806SStefan Hajnoczi val > UINT32_MAX) { 6906a02c806SStefan Hajnoczi error_setg(errp, "Failed to parse port '%s'", vaddr->port); 6916a02c806SStefan Hajnoczi return false; 6926a02c806SStefan Hajnoczi } 6936a02c806SStefan Hajnoczi svm->svm_port = val; 6946a02c806SStefan Hajnoczi 6956a02c806SStefan Hajnoczi return true; 6966a02c806SStefan Hajnoczi } 6976a02c806SStefan Hajnoczi 698b2587932SCao jin static int vsock_connect_addr(const struct sockaddr_vm *svm, Error **errp) 6996a02c806SStefan Hajnoczi { 7006a02c806SStefan Hajnoczi int sock, rc; 7016a02c806SStefan Hajnoczi 7026a02c806SStefan Hajnoczi sock = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); 7036a02c806SStefan Hajnoczi if (sock < 0) { 7046a02c806SStefan Hajnoczi error_setg_errno(errp, errno, "Failed to create socket"); 7056a02c806SStefan Hajnoczi return -1; 7066a02c806SStefan Hajnoczi } 707b2587932SCao jin 7086a02c806SStefan Hajnoczi /* connect to peer */ 7096a02c806SStefan Hajnoczi do { 7106a02c806SStefan Hajnoczi rc = 0; 7116a02c806SStefan Hajnoczi if (connect(sock, (const struct sockaddr *)svm, sizeof(*svm)) < 0) { 7126a02c806SStefan Hajnoczi rc = -errno; 7136a02c806SStefan Hajnoczi } 7146a02c806SStefan Hajnoczi } while (rc == -EINTR); 7156a02c806SStefan Hajnoczi 716b2587932SCao jin if (rc < 0) { 7176a02c806SStefan Hajnoczi error_setg_errno(errp, errno, "Failed to connect socket"); 7186a02c806SStefan Hajnoczi closesocket(sock); 7196a02c806SStefan Hajnoczi return -1; 7206a02c806SStefan Hajnoczi } 721b2587932SCao jin 7226a02c806SStefan Hajnoczi return sock; 7236a02c806SStefan Hajnoczi } 7246a02c806SStefan Hajnoczi 725b2587932SCao jin static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) 7266a02c806SStefan Hajnoczi { 7276a02c806SStefan Hajnoczi struct sockaddr_vm svm; 7286a02c806SStefan Hajnoczi int sock = -1; 7296a02c806SStefan Hajnoczi 7306a02c806SStefan Hajnoczi if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { 7316a02c806SStefan Hajnoczi return -1; 7326a02c806SStefan Hajnoczi } 7336a02c806SStefan Hajnoczi 734b2587932SCao jin sock = vsock_connect_addr(&svm, errp); 7356a02c806SStefan Hajnoczi 7366a02c806SStefan Hajnoczi return sock; 7376a02c806SStefan Hajnoczi } 7386a02c806SStefan Hajnoczi 7396a02c806SStefan Hajnoczi static int vsock_listen_saddr(VsockSocketAddress *vaddr, 7406a02c806SStefan Hajnoczi Error **errp) 7416a02c806SStefan Hajnoczi { 7426a02c806SStefan Hajnoczi struct sockaddr_vm svm; 7436a02c806SStefan Hajnoczi int slisten; 7446a02c806SStefan Hajnoczi 7456a02c806SStefan Hajnoczi if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { 7466a02c806SStefan Hajnoczi return -1; 7476a02c806SStefan Hajnoczi } 7486a02c806SStefan Hajnoczi 7496a02c806SStefan Hajnoczi slisten = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); 7506a02c806SStefan Hajnoczi if (slisten < 0) { 7516a02c806SStefan Hajnoczi error_setg_errno(errp, errno, "Failed to create socket"); 7526a02c806SStefan Hajnoczi return -1; 7536a02c806SStefan Hajnoczi } 7546a02c806SStefan Hajnoczi 7556a02c806SStefan Hajnoczi if (bind(slisten, (const struct sockaddr *)&svm, sizeof(svm)) != 0) { 7566a02c806SStefan Hajnoczi error_setg_errno(errp, errno, "Failed to bind socket"); 7576a02c806SStefan Hajnoczi closesocket(slisten); 7586a02c806SStefan Hajnoczi return -1; 7596a02c806SStefan Hajnoczi } 7606a02c806SStefan Hajnoczi 7616a02c806SStefan Hajnoczi if (listen(slisten, 1) != 0) { 7626a02c806SStefan Hajnoczi error_setg_errno(errp, errno, "Failed to listen on socket"); 7636a02c806SStefan Hajnoczi closesocket(slisten); 7646a02c806SStefan Hajnoczi return -1; 7656a02c806SStefan Hajnoczi } 7666a02c806SStefan Hajnoczi return slisten; 7676a02c806SStefan Hajnoczi } 7686a02c806SStefan Hajnoczi 7694db5c619SMarkus Armbruster static int vsock_parse(VsockSocketAddress *addr, const char *str, 7704db5c619SMarkus Armbruster Error **errp) 7716a02c806SStefan Hajnoczi { 7726a02c806SStefan Hajnoczi char cid[33]; 7736a02c806SStefan Hajnoczi char port[33]; 7746a02c806SStefan Hajnoczi int n; 7756a02c806SStefan Hajnoczi 7766a02c806SStefan Hajnoczi if (sscanf(str, "%32[^:]:%32[^,]%n", cid, port, &n) != 2) { 7776a02c806SStefan Hajnoczi error_setg(errp, "error parsing address '%s'", str); 7784db5c619SMarkus Armbruster return -1; 7796a02c806SStefan Hajnoczi } 7806a02c806SStefan Hajnoczi if (str[n] != '\0') { 7816a02c806SStefan Hajnoczi error_setg(errp, "trailing characters in address '%s'", str); 7824db5c619SMarkus Armbruster return -1; 7836a02c806SStefan Hajnoczi } 7846a02c806SStefan Hajnoczi 7856a02c806SStefan Hajnoczi addr->cid = g_strdup(cid); 7866a02c806SStefan Hajnoczi addr->port = g_strdup(port); 7874db5c619SMarkus Armbruster return 0; 7886a02c806SStefan Hajnoczi } 7896a02c806SStefan Hajnoczi #else 7906a02c806SStefan Hajnoczi static void vsock_unsupported(Error **errp) 7916a02c806SStefan Hajnoczi { 7926a02c806SStefan Hajnoczi error_setg(errp, "socket family AF_VSOCK unsupported"); 7936a02c806SStefan Hajnoczi } 7946a02c806SStefan Hajnoczi 795b2587932SCao jin static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) 7966a02c806SStefan Hajnoczi { 7976a02c806SStefan Hajnoczi vsock_unsupported(errp); 7986a02c806SStefan Hajnoczi return -1; 7996a02c806SStefan Hajnoczi } 8006a02c806SStefan Hajnoczi 8016a02c806SStefan Hajnoczi static int vsock_listen_saddr(VsockSocketAddress *vaddr, 8026a02c806SStefan Hajnoczi Error **errp) 8036a02c806SStefan Hajnoczi { 8046a02c806SStefan Hajnoczi vsock_unsupported(errp); 8056a02c806SStefan Hajnoczi return -1; 8066a02c806SStefan Hajnoczi } 8076a02c806SStefan Hajnoczi 8084db5c619SMarkus Armbruster static int vsock_parse(VsockSocketAddress *addr, const char *str, 8094db5c619SMarkus Armbruster Error **errp) 8106a02c806SStefan Hajnoczi { 8116a02c806SStefan Hajnoczi vsock_unsupported(errp); 8124db5c619SMarkus Armbruster return -1; 8136a02c806SStefan Hajnoczi } 8146a02c806SStefan Hajnoczi #endif /* CONFIG_AF_VSOCK */ 8156a02c806SStefan Hajnoczi 816baacf047SPaolo Bonzini #ifndef _WIN32 817baacf047SPaolo Bonzini 8181856835dSDaniel P. Berrange static int unix_listen_saddr(UnixSocketAddress *saddr, 8191856835dSDaniel P. Berrange Error **errp) 820baacf047SPaolo Bonzini { 821baacf047SPaolo Bonzini struct sockaddr_un un; 822baacf047SPaolo Bonzini int sock, fd; 823ad9579aaSDaniel P. Berrange char *pathbuf = NULL; 824ad9579aaSDaniel P. Berrange const char *path; 825baacf047SPaolo Bonzini 826baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 827baacf047SPaolo Bonzini if (sock < 0) { 828b658c53dSPaolo Bonzini error_setg_errno(errp, errno, "Failed to create Unix socket"); 829baacf047SPaolo Bonzini return -1; 830baacf047SPaolo Bonzini } 831baacf047SPaolo Bonzini 832ad9579aaSDaniel P. Berrange if (saddr->path && saddr->path[0]) { 833ad9579aaSDaniel P. Berrange path = saddr->path; 834baacf047SPaolo Bonzini } else { 835b658c53dSPaolo Bonzini const char *tmpdir = getenv("TMPDIR"); 836b658c53dSPaolo Bonzini tmpdir = tmpdir ? tmpdir : "/tmp"; 837ad9579aaSDaniel P. Berrange path = pathbuf = g_strdup_printf("%s/qemu-socket-XXXXXX", tmpdir); 838ad9579aaSDaniel P. Berrange } 839ad9579aaSDaniel P. Berrange 840ad9579aaSDaniel P. Berrange if (strlen(path) > sizeof(un.sun_path)) { 841ad9579aaSDaniel P. Berrange error_setg(errp, "UNIX socket path '%s' is too long", path); 842ad9579aaSDaniel P. Berrange error_append_hint(errp, "Path must be less than %zu bytes\n", 843ad9579aaSDaniel P. Berrange sizeof(un.sun_path)); 844b658c53dSPaolo Bonzini goto err; 845b658c53dSPaolo Bonzini } 846b658c53dSPaolo Bonzini 847ad9579aaSDaniel P. Berrange if (pathbuf != NULL) { 848baacf047SPaolo Bonzini /* 849baacf047SPaolo Bonzini * This dummy fd usage silences the mktemp() unsecure warning. 850baacf047SPaolo Bonzini * Using mkstemp() doesn't make things more secure here 851baacf047SPaolo Bonzini * though. bind() complains about existing files, so we have 852baacf047SPaolo Bonzini * to unlink first and thus re-open the race window. The 853baacf047SPaolo Bonzini * worst case possible is bind() failing, i.e. a DoS attack. 854baacf047SPaolo Bonzini */ 855ad9579aaSDaniel P. Berrange fd = mkstemp(pathbuf); 856b658c53dSPaolo Bonzini if (fd < 0) { 857b658c53dSPaolo Bonzini error_setg_errno(errp, errno, 858ad9579aaSDaniel P. Berrange "Failed to make a temporary socket %s", pathbuf); 859b658c53dSPaolo Bonzini goto err; 860b658c53dSPaolo Bonzini } 861b658c53dSPaolo Bonzini close(fd); 862baacf047SPaolo Bonzini } 863baacf047SPaolo Bonzini 864ad9579aaSDaniel P. Berrange if (unlink(path) < 0 && errno != ENOENT) { 8650ef705a2SCole Robinson error_setg_errno(errp, errno, 866ad9579aaSDaniel P. Berrange "Failed to unlink socket %s", path); 8670ef705a2SCole Robinson goto err; 8680ef705a2SCole Robinson } 869ad9579aaSDaniel P. Berrange 870ad9579aaSDaniel P. Berrange memset(&un, 0, sizeof(un)); 871ad9579aaSDaniel P. Berrange un.sun_family = AF_UNIX; 872ad9579aaSDaniel P. Berrange strncpy(un.sun_path, path, sizeof(un.sun_path)); 873ad9579aaSDaniel P. Berrange 874baacf047SPaolo Bonzini if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { 87556382bd5SDaniel P. Berrange error_setg_errno(errp, errno, "Failed to bind socket to %s", path); 876baacf047SPaolo Bonzini goto err; 877baacf047SPaolo Bonzini } 878baacf047SPaolo Bonzini if (listen(sock, 1) < 0) { 879235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to listen on socket"); 880baacf047SPaolo Bonzini goto err; 881baacf047SPaolo Bonzini } 882baacf047SPaolo Bonzini 883ad9579aaSDaniel P. Berrange g_free(pathbuf); 884baacf047SPaolo Bonzini return sock; 885baacf047SPaolo Bonzini 886baacf047SPaolo Bonzini err: 887ad9579aaSDaniel P. Berrange g_free(pathbuf); 888baacf047SPaolo Bonzini closesocket(sock); 889baacf047SPaolo Bonzini return -1; 890baacf047SPaolo Bonzini } 891baacf047SPaolo Bonzini 892b2587932SCao jin static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) 893baacf047SPaolo Bonzini { 894baacf047SPaolo Bonzini struct sockaddr_un un; 895baacf047SPaolo Bonzini int sock, rc; 896baacf047SPaolo Bonzini 8972942e420SDaniel P. Berrange if (saddr->path == NULL) { 898312fd5f2SMarkus Armbruster error_setg(errp, "unix connect: no path specified"); 899baacf047SPaolo Bonzini return -1; 900baacf047SPaolo Bonzini } 901baacf047SPaolo Bonzini 902baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 903baacf047SPaolo Bonzini if (sock < 0) { 904235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 905baacf047SPaolo Bonzini return -1; 906baacf047SPaolo Bonzini } 907baacf047SPaolo Bonzini 908ad9579aaSDaniel P. Berrange if (strlen(saddr->path) > sizeof(un.sun_path)) { 909ad9579aaSDaniel P. Berrange error_setg(errp, "UNIX socket path '%s' is too long", saddr->path); 910ad9579aaSDaniel P. Berrange error_append_hint(errp, "Path must be less than %zu bytes\n", 911ad9579aaSDaniel P. Berrange sizeof(un.sun_path)); 912ad9579aaSDaniel P. Berrange goto err; 913ad9579aaSDaniel P. Berrange } 914ad9579aaSDaniel P. Berrange 915baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 916baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 917ad9579aaSDaniel P. Berrange strncpy(un.sun_path, saddr->path, sizeof(un.sun_path)); 918baacf047SPaolo Bonzini 919baacf047SPaolo Bonzini /* connect to peer */ 920baacf047SPaolo Bonzini do { 921baacf047SPaolo Bonzini rc = 0; 922baacf047SPaolo Bonzini if (connect(sock, (struct sockaddr *) &un, sizeof(un)) < 0) { 923b16a44e1SDaniel P. Berrange rc = -errno; 924baacf047SPaolo Bonzini } 925baacf047SPaolo Bonzini } while (rc == -EINTR); 926baacf047SPaolo Bonzini 927baacf047SPaolo Bonzini if (rc < 0) { 928ad9579aaSDaniel P. Berrange error_setg_errno(errp, -rc, "Failed to connect socket %s", 929ad9579aaSDaniel P. Berrange saddr->path); 930ad9579aaSDaniel P. Berrange goto err; 931baacf047SPaolo Bonzini } 932baacf047SPaolo Bonzini 933baacf047SPaolo Bonzini return sock; 934ad9579aaSDaniel P. Berrange 935ad9579aaSDaniel P. Berrange err: 936ad9579aaSDaniel P. Berrange close(sock); 937ad9579aaSDaniel P. Berrange return -1; 938baacf047SPaolo Bonzini } 939baacf047SPaolo Bonzini 940baacf047SPaolo Bonzini #else 941baacf047SPaolo Bonzini 9421856835dSDaniel P. Berrange static int unix_listen_saddr(UnixSocketAddress *saddr, 9431856835dSDaniel P. Berrange Error **errp) 944baacf047SPaolo Bonzini { 945baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 946baacf047SPaolo Bonzini errno = ENOTSUP; 947baacf047SPaolo Bonzini return -1; 948baacf047SPaolo Bonzini } 949baacf047SPaolo Bonzini 950b2587932SCao jin static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) 951baacf047SPaolo Bonzini { 952baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 953baacf047SPaolo Bonzini errno = ENOTSUP; 954baacf047SPaolo Bonzini return -1; 955baacf047SPaolo Bonzini } 956baacf047SPaolo Bonzini #endif 957baacf047SPaolo Bonzini 958baacf047SPaolo Bonzini /* compatibility wrapper */ 95962473511SDaniel P. Berrange int unix_listen(const char *str, Error **errp) 960baacf047SPaolo Bonzini { 961baacf047SPaolo Bonzini char *path, *optstr; 962baacf047SPaolo Bonzini int sock, len; 9631856835dSDaniel P. Berrange UnixSocketAddress *saddr; 964baacf047SPaolo Bonzini 9651856835dSDaniel P. Berrange saddr = g_new0(UnixSocketAddress, 1); 966baacf047SPaolo Bonzini 967baacf047SPaolo Bonzini optstr = strchr(str, ','); 968baacf047SPaolo Bonzini if (optstr) { 969baacf047SPaolo Bonzini len = optstr - str; 970baacf047SPaolo Bonzini if (len) { 971baacf047SPaolo Bonzini path = g_malloc(len+1); 972baacf047SPaolo Bonzini snprintf(path, len+1, "%.*s", len, str); 9731856835dSDaniel P. Berrange saddr->path = path; 974baacf047SPaolo Bonzini } 975baacf047SPaolo Bonzini } else { 9761856835dSDaniel P. Berrange saddr->path = g_strdup(str); 977baacf047SPaolo Bonzini } 978baacf047SPaolo Bonzini 97962473511SDaniel P. Berrange sock = unix_listen_saddr(saddr, errp); 98026015051SCao jin 9811856835dSDaniel P. Berrange qapi_free_UnixSocketAddress(saddr); 982baacf047SPaolo Bonzini return sock; 983baacf047SPaolo Bonzini } 984baacf047SPaolo Bonzini 985baacf047SPaolo Bonzini int unix_connect(const char *path, Error **errp) 986baacf047SPaolo Bonzini { 9872942e420SDaniel P. Berrange UnixSocketAddress *saddr; 988baacf047SPaolo Bonzini int sock; 989baacf047SPaolo Bonzini 9902942e420SDaniel P. Berrange saddr = g_new0(UnixSocketAddress, 1); 9912942e420SDaniel P. Berrange saddr->path = g_strdup(path); 992b2587932SCao jin sock = unix_connect_saddr(saddr, errp); 9932942e420SDaniel P. Berrange qapi_free_UnixSocketAddress(saddr); 994baacf047SPaolo Bonzini return sock; 995baacf047SPaolo Bonzini } 996baacf047SPaolo Bonzini 997baacf047SPaolo Bonzini 998bd269ebcSMarkus Armbruster SocketAddress *socket_parse(const char *str, Error **errp) 999baacf047SPaolo Bonzini { 1000bd269ebcSMarkus Armbruster SocketAddress *addr; 1001baacf047SPaolo Bonzini 1002bd269ebcSMarkus Armbruster addr = g_new0(SocketAddress, 1); 1003baacf047SPaolo Bonzini if (strstart(str, "unix:", NULL)) { 1004baacf047SPaolo Bonzini if (str[5] == '\0') { 1005312fd5f2SMarkus Armbruster error_setg(errp, "invalid Unix socket address"); 1006baacf047SPaolo Bonzini goto fail; 1007baacf047SPaolo Bonzini } else { 1008bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_UNIX; 1009bd269ebcSMarkus Armbruster addr->u.q_unix.path = g_strdup(str + 5); 1010baacf047SPaolo Bonzini } 1011baacf047SPaolo Bonzini } else if (strstart(str, "fd:", NULL)) { 1012baacf047SPaolo Bonzini if (str[3] == '\0') { 1013312fd5f2SMarkus Armbruster error_setg(errp, "invalid file descriptor address"); 1014baacf047SPaolo Bonzini goto fail; 1015baacf047SPaolo Bonzini } else { 1016bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_FD; 1017bd269ebcSMarkus Armbruster addr->u.fd.str = g_strdup(str + 3); 1018baacf047SPaolo Bonzini } 10196a02c806SStefan Hajnoczi } else if (strstart(str, "vsock:", NULL)) { 1020bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_VSOCK; 1021bd269ebcSMarkus Armbruster if (vsock_parse(&addr->u.vsock, str + strlen("vsock:"), errp)) { 10226a02c806SStefan Hajnoczi goto fail; 10236a02c806SStefan Hajnoczi } 1024baacf047SPaolo Bonzini } else { 1025bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_INET; 1026bd269ebcSMarkus Armbruster if (inet_parse(&addr->u.inet, str, errp)) { 1027baacf047SPaolo Bonzini goto fail; 1028baacf047SPaolo Bonzini } 1029baacf047SPaolo Bonzini } 1030baacf047SPaolo Bonzini return addr; 1031baacf047SPaolo Bonzini 1032baacf047SPaolo Bonzini fail: 1033bd269ebcSMarkus Armbruster qapi_free_SocketAddress(addr); 1034baacf047SPaolo Bonzini return NULL; 1035baacf047SPaolo Bonzini } 1036baacf047SPaolo Bonzini 1037b2587932SCao jin int socket_connect(SocketAddress *addr, Error **errp) 1038baacf047SPaolo Bonzini { 1039baacf047SPaolo Bonzini int fd; 1040baacf047SPaolo Bonzini 10412d32addaSEric Blake switch (addr->type) { 1042bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_INET: 1043b2587932SCao jin fd = inet_connect_saddr(&addr->u.inet, errp); 1044baacf047SPaolo Bonzini break; 1045baacf047SPaolo Bonzini 1046bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_UNIX: 1047b2587932SCao jin fd = unix_connect_saddr(&addr->u.q_unix, errp); 1048baacf047SPaolo Bonzini break; 1049baacf047SPaolo Bonzini 1050bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_FD: 1051bd269ebcSMarkus Armbruster fd = monitor_get_fd(cur_mon, addr->u.fd.str, errp); 1052baacf047SPaolo Bonzini break; 1053baacf047SPaolo Bonzini 1054bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_VSOCK: 1055b2587932SCao jin fd = vsock_connect_saddr(&addr->u.vsock, errp); 10566a02c806SStefan Hajnoczi break; 10576a02c806SStefan Hajnoczi 1058baacf047SPaolo Bonzini default: 1059baacf047SPaolo Bonzini abort(); 1060baacf047SPaolo Bonzini } 1061baacf047SPaolo Bonzini return fd; 1062baacf047SPaolo Bonzini } 1063baacf047SPaolo Bonzini 1064bd269ebcSMarkus Armbruster int socket_listen(SocketAddress *addr, Error **errp) 1065baacf047SPaolo Bonzini { 1066baacf047SPaolo Bonzini int fd; 1067baacf047SPaolo Bonzini 10682d32addaSEric Blake switch (addr->type) { 1069bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_INET: 107062473511SDaniel P. Berrange fd = inet_listen_saddr(&addr->u.inet, 0, errp); 1071baacf047SPaolo Bonzini break; 1072baacf047SPaolo Bonzini 1073bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_UNIX: 107462473511SDaniel P. Berrange fd = unix_listen_saddr(&addr->u.q_unix, errp); 1075baacf047SPaolo Bonzini break; 1076baacf047SPaolo Bonzini 1077bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_FD: 1078bd269ebcSMarkus Armbruster fd = monitor_get_fd(cur_mon, addr->u.fd.str, errp); 1079baacf047SPaolo Bonzini break; 1080baacf047SPaolo Bonzini 1081bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_VSOCK: 1082bd269ebcSMarkus Armbruster fd = vsock_listen_saddr(&addr->u.vsock, errp); 10836a02c806SStefan Hajnoczi break; 10846a02c806SStefan Hajnoczi 1085baacf047SPaolo Bonzini default: 1086baacf047SPaolo Bonzini abort(); 1087baacf047SPaolo Bonzini } 1088baacf047SPaolo Bonzini return fd; 1089baacf047SPaolo Bonzini } 1090baacf047SPaolo Bonzini 109174b6ce43SMarc-André Lureau void socket_listen_cleanup(int fd, Error **errp) 109274b6ce43SMarc-André Lureau { 1093bd269ebcSMarkus Armbruster SocketAddress *addr; 109474b6ce43SMarc-André Lureau 109574b6ce43SMarc-André Lureau addr = socket_local_address(fd, errp); 10962d7ad7c0SDaniel P. Berrange if (!addr) { 10972d7ad7c0SDaniel P. Berrange return; 10982d7ad7c0SDaniel P. Berrange } 109974b6ce43SMarc-André Lureau 1100bd269ebcSMarkus Armbruster if (addr->type == SOCKET_ADDRESS_TYPE_UNIX 1101bd269ebcSMarkus Armbruster && addr->u.q_unix.path) { 1102bd269ebcSMarkus Armbruster if (unlink(addr->u.q_unix.path) < 0 && errno != ENOENT) { 110374b6ce43SMarc-André Lureau error_setg_errno(errp, errno, 110474b6ce43SMarc-André Lureau "Failed to unlink socket %s", 1105bd269ebcSMarkus Armbruster addr->u.q_unix.path); 110674b6ce43SMarc-André Lureau } 110774b6ce43SMarc-André Lureau } 110874b6ce43SMarc-André Lureau 1109bd269ebcSMarkus Armbruster qapi_free_SocketAddress(addr); 111074b6ce43SMarc-André Lureau } 111174b6ce43SMarc-André Lureau 1112bd269ebcSMarkus Armbruster int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) 11133ecc059dSGerd Hoffmann { 11143ecc059dSGerd Hoffmann int fd; 11153ecc059dSGerd Hoffmann 1116ca0b64e5SMarkus Armbruster /* 1117bd269ebcSMarkus Armbruster * TODO SOCKET_ADDRESS_TYPE_FD when fd is AF_INET or AF_INET6 1118ca0b64e5SMarkus Armbruster * (although other address families can do SOCK_DGRAM, too) 1119ca0b64e5SMarkus Armbruster */ 11202d32addaSEric Blake switch (remote->type) { 1121bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_INET: 1122bd269ebcSMarkus Armbruster fd = inet_dgram_saddr(&remote->u.inet, 1123bd269ebcSMarkus Armbruster local ? &local->u.inet : NULL, errp); 11243ecc059dSGerd Hoffmann break; 11253ecc059dSGerd Hoffmann 11263ecc059dSGerd Hoffmann default: 11273ecc059dSGerd Hoffmann error_setg(errp, "socket type unsupported for datagram"); 11287a5b6af1SGerd Hoffmann fd = -1; 11293ecc059dSGerd Hoffmann } 11303ecc059dSGerd Hoffmann return fd; 11313ecc059dSGerd Hoffmann } 113217c55decSDaniel P. Berrange 113317c55decSDaniel P. Berrange 1134bd269ebcSMarkus Armbruster static SocketAddress * 113517c55decSDaniel P. Berrange socket_sockaddr_to_address_inet(struct sockaddr_storage *sa, 113617c55decSDaniel P. Berrange socklen_t salen, 113717c55decSDaniel P. Berrange Error **errp) 113817c55decSDaniel P. Berrange { 113917c55decSDaniel P. Berrange char host[NI_MAXHOST]; 114017c55decSDaniel P. Berrange char serv[NI_MAXSERV]; 1141bd269ebcSMarkus Armbruster SocketAddress *addr; 11420399293eSEric Blake InetSocketAddress *inet; 114317c55decSDaniel P. Berrange int ret; 114417c55decSDaniel P. Berrange 114517c55decSDaniel P. Berrange ret = getnameinfo((struct sockaddr *)sa, salen, 114617c55decSDaniel P. Berrange host, sizeof(host), 114717c55decSDaniel P. Berrange serv, sizeof(serv), 114817c55decSDaniel P. Berrange NI_NUMERICHOST | NI_NUMERICSERV); 114917c55decSDaniel P. Berrange if (ret != 0) { 115017c55decSDaniel P. Berrange error_setg(errp, "Cannot format numeric socket address: %s", 115117c55decSDaniel P. Berrange gai_strerror(ret)); 115217c55decSDaniel P. Berrange return NULL; 115317c55decSDaniel P. Berrange } 115417c55decSDaniel P. Berrange 1155bd269ebcSMarkus Armbruster addr = g_new0(SocketAddress, 1); 1156bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_INET; 1157bd269ebcSMarkus Armbruster inet = &addr->u.inet; 11580399293eSEric Blake inet->host = g_strdup(host); 11590399293eSEric Blake inet->port = g_strdup(serv); 116017c55decSDaniel P. Berrange if (sa->ss_family == AF_INET) { 11610399293eSEric Blake inet->has_ipv4 = inet->ipv4 = true; 116217c55decSDaniel P. Berrange } else { 11630399293eSEric Blake inet->has_ipv6 = inet->ipv6 = true; 116417c55decSDaniel P. Berrange } 116517c55decSDaniel P. Berrange 116617c55decSDaniel P. Berrange return addr; 116717c55decSDaniel P. Berrange } 116817c55decSDaniel P. Berrange 116917c55decSDaniel P. Berrange 117017c55decSDaniel P. Berrange #ifndef WIN32 1171bd269ebcSMarkus Armbruster static SocketAddress * 117217c55decSDaniel P. Berrange socket_sockaddr_to_address_unix(struct sockaddr_storage *sa, 117317c55decSDaniel P. Berrange socklen_t salen, 117417c55decSDaniel P. Berrange Error **errp) 117517c55decSDaniel P. Berrange { 1176bd269ebcSMarkus Armbruster SocketAddress *addr; 117717c55decSDaniel P. Berrange struct sockaddr_un *su = (struct sockaddr_un *)sa; 117817c55decSDaniel P. Berrange 1179bd269ebcSMarkus Armbruster addr = g_new0(SocketAddress, 1); 1180bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_UNIX; 118117c55decSDaniel P. Berrange if (su->sun_path[0]) { 1182bd269ebcSMarkus Armbruster addr->u.q_unix.path = g_strndup(su->sun_path, sizeof(su->sun_path)); 118317c55decSDaniel P. Berrange } 118417c55decSDaniel P. Berrange 118517c55decSDaniel P. Berrange return addr; 118617c55decSDaniel P. Berrange } 118717c55decSDaniel P. Berrange #endif /* WIN32 */ 118817c55decSDaniel P. Berrange 11896a02c806SStefan Hajnoczi #ifdef CONFIG_AF_VSOCK 1190bd269ebcSMarkus Armbruster static SocketAddress * 11916a02c806SStefan Hajnoczi socket_sockaddr_to_address_vsock(struct sockaddr_storage *sa, 11926a02c806SStefan Hajnoczi socklen_t salen, 11936a02c806SStefan Hajnoczi Error **errp) 11946a02c806SStefan Hajnoczi { 1195bd269ebcSMarkus Armbruster SocketAddress *addr; 11966a02c806SStefan Hajnoczi VsockSocketAddress *vaddr; 11976a02c806SStefan Hajnoczi struct sockaddr_vm *svm = (struct sockaddr_vm *)sa; 11986a02c806SStefan Hajnoczi 1199bd269ebcSMarkus Armbruster addr = g_new0(SocketAddress, 1); 1200bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_VSOCK; 1201bd269ebcSMarkus Armbruster vaddr = &addr->u.vsock; 12026a02c806SStefan Hajnoczi vaddr->cid = g_strdup_printf("%u", svm->svm_cid); 12036a02c806SStefan Hajnoczi vaddr->port = g_strdup_printf("%u", svm->svm_port); 12046a02c806SStefan Hajnoczi 12056a02c806SStefan Hajnoczi return addr; 12066a02c806SStefan Hajnoczi } 12076a02c806SStefan Hajnoczi #endif /* CONFIG_AF_VSOCK */ 12086a02c806SStefan Hajnoczi 1209bd269ebcSMarkus Armbruster SocketAddress * 121017c55decSDaniel P. Berrange socket_sockaddr_to_address(struct sockaddr_storage *sa, 121117c55decSDaniel P. Berrange socklen_t salen, 121217c55decSDaniel P. Berrange Error **errp) 121317c55decSDaniel P. Berrange { 121417c55decSDaniel P. Berrange switch (sa->ss_family) { 121517c55decSDaniel P. Berrange case AF_INET: 121617c55decSDaniel P. Berrange case AF_INET6: 121717c55decSDaniel P. Berrange return socket_sockaddr_to_address_inet(sa, salen, errp); 121817c55decSDaniel P. Berrange 121917c55decSDaniel P. Berrange #ifndef WIN32 122017c55decSDaniel P. Berrange case AF_UNIX: 122117c55decSDaniel P. Berrange return socket_sockaddr_to_address_unix(sa, salen, errp); 122217c55decSDaniel P. Berrange #endif /* WIN32 */ 122317c55decSDaniel P. Berrange 12246a02c806SStefan Hajnoczi #ifdef CONFIG_AF_VSOCK 12256a02c806SStefan Hajnoczi case AF_VSOCK: 12266a02c806SStefan Hajnoczi return socket_sockaddr_to_address_vsock(sa, salen, errp); 12276a02c806SStefan Hajnoczi #endif 12286a02c806SStefan Hajnoczi 122917c55decSDaniel P. Berrange default: 123017c55decSDaniel P. Berrange error_setg(errp, "socket family %d unsupported", 123117c55decSDaniel P. Berrange sa->ss_family); 123217c55decSDaniel P. Berrange return NULL; 123317c55decSDaniel P. Berrange } 123417c55decSDaniel P. Berrange return 0; 123517c55decSDaniel P. Berrange } 123617c55decSDaniel P. Berrange 123717c55decSDaniel P. Berrange 1238bd269ebcSMarkus Armbruster SocketAddress *socket_local_address(int fd, Error **errp) 123917c55decSDaniel P. Berrange { 124017c55decSDaniel P. Berrange struct sockaddr_storage ss; 124117c55decSDaniel P. Berrange socklen_t sslen = sizeof(ss); 124217c55decSDaniel P. Berrange 124317c55decSDaniel P. Berrange if (getsockname(fd, (struct sockaddr *)&ss, &sslen) < 0) { 1244b16a44e1SDaniel P. Berrange error_setg_errno(errp, errno, "%s", 124517c55decSDaniel P. Berrange "Unable to query local socket address"); 124617c55decSDaniel P. Berrange return NULL; 124717c55decSDaniel P. Berrange } 124817c55decSDaniel P. Berrange 124917c55decSDaniel P. Berrange return socket_sockaddr_to_address(&ss, sslen, errp); 125017c55decSDaniel P. Berrange } 125117c55decSDaniel P. Berrange 125217c55decSDaniel P. Berrange 1253bd269ebcSMarkus Armbruster SocketAddress *socket_remote_address(int fd, Error **errp) 125417c55decSDaniel P. Berrange { 125517c55decSDaniel P. Berrange struct sockaddr_storage ss; 125617c55decSDaniel P. Berrange socklen_t sslen = sizeof(ss); 125717c55decSDaniel P. Berrange 125817c55decSDaniel P. Berrange if (getpeername(fd, (struct sockaddr *)&ss, &sslen) < 0) { 1259b16a44e1SDaniel P. Berrange error_setg_errno(errp, errno, "%s", 126017c55decSDaniel P. Berrange "Unable to query remote socket address"); 126117c55decSDaniel P. Berrange return NULL; 126217c55decSDaniel P. Berrange } 126317c55decSDaniel P. Berrange 126417c55decSDaniel P. Berrange return socket_sockaddr_to_address(&ss, sslen, errp); 126517c55decSDaniel P. Berrange } 12662a8e21c7SDaniel P. Berrange 1267216411b8SMarkus Armbruster 1268bd269ebcSMarkus Armbruster SocketAddress *socket_address_flatten(SocketAddressLegacy *addr_legacy) 1269bd269ebcSMarkus Armbruster { 1270fc0f0059SMarkus Armbruster SocketAddress *addr; 1271bd269ebcSMarkus Armbruster 1272bd269ebcSMarkus Armbruster if (!addr_legacy) { 1273bd269ebcSMarkus Armbruster return NULL; 1274bd269ebcSMarkus Armbruster } 1275bd269ebcSMarkus Armbruster 1276fc0f0059SMarkus Armbruster addr = g_new(SocketAddress, 1); 1277fc0f0059SMarkus Armbruster 1278bd269ebcSMarkus Armbruster switch (addr_legacy->type) { 1279bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_LEGACY_KIND_INET: 1280bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_INET; 1281bd269ebcSMarkus Armbruster QAPI_CLONE_MEMBERS(InetSocketAddress, &addr->u.inet, 1282bd269ebcSMarkus Armbruster addr_legacy->u.inet.data); 1283bd269ebcSMarkus Armbruster break; 1284bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_LEGACY_KIND_UNIX: 1285bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_UNIX; 1286bd269ebcSMarkus Armbruster QAPI_CLONE_MEMBERS(UnixSocketAddress, &addr->u.q_unix, 1287bd269ebcSMarkus Armbruster addr_legacy->u.q_unix.data); 1288bd269ebcSMarkus Armbruster break; 1289bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_LEGACY_KIND_VSOCK: 1290bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_VSOCK; 1291bd269ebcSMarkus Armbruster QAPI_CLONE_MEMBERS(VsockSocketAddress, &addr->u.vsock, 1292bd269ebcSMarkus Armbruster addr_legacy->u.vsock.data); 1293bd269ebcSMarkus Armbruster break; 1294bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_LEGACY_KIND_FD: 1295bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_FD; 1296bd269ebcSMarkus Armbruster QAPI_CLONE_MEMBERS(String, &addr->u.fd, addr_legacy->u.fd.data); 1297bd269ebcSMarkus Armbruster break; 1298bd269ebcSMarkus Armbruster default: 1299bd269ebcSMarkus Armbruster abort(); 1300bd269ebcSMarkus Armbruster } 1301bd269ebcSMarkus Armbruster 1302bd269ebcSMarkus Armbruster return addr; 1303bd269ebcSMarkus Armbruster } 1304