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 24a8d25326SMarkus Armbruster #include "qemu-common.h" 25baacf047SPaolo Bonzini #include "monitor/monitor.h" 26bd269ebcSMarkus Armbruster #include "qapi/clone-visitor.h" 27da34e65cSMarkus Armbruster #include "qapi/error.h" 289af23989SMarkus Armbruster #include "qapi/qapi-visit-sockets.h" 29baacf047SPaolo Bonzini #include "qemu/sockets.h" 30baacf047SPaolo Bonzini #include "qemu/main-loop.h" 31b3db211fSDaniel P. Berrange #include "qapi/qobject-input-visitor.h" 32b3db211fSDaniel P. Berrange #include "qapi/qobject-output-visitor.h" 33f348b6d1SVeronia Bahaa #include "qemu/cutils.h" 34baacf047SPaolo Bonzini 35baacf047SPaolo Bonzini #ifndef AI_ADDRCONFIG 36baacf047SPaolo Bonzini # define AI_ADDRCONFIG 0 37baacf047SPaolo Bonzini #endif 38340849a9SDaniel P. Berrange 393de3d698SWolfgang Bumiller #ifndef AI_V4MAPPED 403de3d698SWolfgang Bumiller # define AI_V4MAPPED 0 413de3d698SWolfgang Bumiller #endif 42baacf047SPaolo Bonzini 436979a813SDaniel P. Berrange #ifndef AI_NUMERICSERV 446979a813SDaniel P. Berrange # define AI_NUMERICSERV 0 456979a813SDaniel P. Berrange #endif 466979a813SDaniel P. Berrange 47baacf047SPaolo Bonzini 48baacf047SPaolo Bonzini static int inet_getport(struct addrinfo *e) 49baacf047SPaolo Bonzini { 50baacf047SPaolo Bonzini struct sockaddr_in *i4; 51baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 52baacf047SPaolo Bonzini 53baacf047SPaolo Bonzini switch (e->ai_family) { 54baacf047SPaolo Bonzini case PF_INET6: 55baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 56baacf047SPaolo Bonzini return ntohs(i6->sin6_port); 57baacf047SPaolo Bonzini case PF_INET: 58baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 59baacf047SPaolo Bonzini return ntohs(i4->sin_port); 60baacf047SPaolo Bonzini default: 61baacf047SPaolo Bonzini return 0; 62baacf047SPaolo Bonzini } 63baacf047SPaolo Bonzini } 64baacf047SPaolo Bonzini 65baacf047SPaolo Bonzini static void inet_setport(struct addrinfo *e, int port) 66baacf047SPaolo Bonzini { 67baacf047SPaolo Bonzini struct sockaddr_in *i4; 68baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 69baacf047SPaolo Bonzini 70baacf047SPaolo Bonzini switch (e->ai_family) { 71baacf047SPaolo Bonzini case PF_INET6: 72baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 73baacf047SPaolo Bonzini i6->sin6_port = htons(port); 74baacf047SPaolo Bonzini break; 75baacf047SPaolo Bonzini case PF_INET: 76baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 77baacf047SPaolo Bonzini i4->sin_port = htons(port); 78baacf047SPaolo Bonzini break; 79baacf047SPaolo Bonzini } 80baacf047SPaolo Bonzini } 81baacf047SPaolo Bonzini 82a589569fSWenchao Xia NetworkAddressFamily inet_netfamily(int family) 83a589569fSWenchao Xia { 84a589569fSWenchao Xia switch (family) { 85a589569fSWenchao Xia case PF_INET6: return NETWORK_ADDRESS_FAMILY_IPV6; 86a589569fSWenchao Xia case PF_INET: return NETWORK_ADDRESS_FAMILY_IPV4; 87a589569fSWenchao Xia case PF_UNIX: return NETWORK_ADDRESS_FAMILY_UNIX; 886a02c806SStefan Hajnoczi #ifdef CONFIG_AF_VSOCK 896a02c806SStefan Hajnoczi case PF_VSOCK: return NETWORK_ADDRESS_FAMILY_VSOCK; 906a02c806SStefan Hajnoczi #endif /* CONFIG_AF_VSOCK */ 91a589569fSWenchao Xia } 92a589569fSWenchao Xia return NETWORK_ADDRESS_FAMILY_UNKNOWN; 93a589569fSWenchao Xia } 94a589569fSWenchao Xia 9558dc31f1SDaniel P. Berrange bool fd_is_socket(int fd) 9658dc31f1SDaniel P. Berrange { 9758dc31f1SDaniel P. Berrange int optval; 9858dc31f1SDaniel P. Berrange socklen_t optlen = sizeof(optval); 9958dc31f1SDaniel P. Berrange return !qemu_getsockopt(fd, SOL_SOCKET, SO_TYPE, &optval, &optlen); 10058dc31f1SDaniel P. Berrange } 10158dc31f1SDaniel P. Berrange 10258dc31f1SDaniel P. Berrange 1031856835dSDaniel P. Berrange /* 1041856835dSDaniel P. Berrange * Matrix we're trying to apply 1051856835dSDaniel P. Berrange * 1061856835dSDaniel P. Berrange * ipv4 ipv6 family 1071856835dSDaniel P. Berrange * - - PF_UNSPEC 1081856835dSDaniel P. Berrange * - f PF_INET 1091856835dSDaniel P. Berrange * - t PF_INET6 1101856835dSDaniel P. Berrange * f - PF_INET6 1111856835dSDaniel P. Berrange * f f <error> 1121856835dSDaniel P. Berrange * f t PF_INET6 1131856835dSDaniel P. Berrange * t - PF_INET 1141856835dSDaniel P. Berrange * t f PF_INET 11594bc0d19SDaniel P. Berrange * t t PF_INET6/PF_UNSPEC 1161856835dSDaniel P. Berrange * 117d43eda3dSWei Jiangang * NB, this matrix is only about getting the necessary results 1181856835dSDaniel P. Berrange * from getaddrinfo(). Some of the cases require further work 1191856835dSDaniel P. Berrange * after reading results from getaddrinfo in order to fully 12094bc0d19SDaniel P. Berrange * apply the logic the end user wants. 12194bc0d19SDaniel P. Berrange * 12294bc0d19SDaniel P. Berrange * In the first and last cases, we must set IPV6_V6ONLY=0 12394bc0d19SDaniel P. Berrange * when binding, to allow a single listener to potentially 12494bc0d19SDaniel P. Berrange * accept both IPv4+6 addresses. 1251856835dSDaniel P. Berrange */ 126c1b412f1SDaniel P. Berrange int inet_ai_family_from_address(InetSocketAddress *addr, 1271856835dSDaniel P. Berrange Error **errp) 1281856835dSDaniel P. Berrange { 1291856835dSDaniel P. Berrange if (addr->has_ipv6 && addr->has_ipv4 && 1301856835dSDaniel P. Berrange !addr->ipv6 && !addr->ipv4) { 1311856835dSDaniel P. Berrange error_setg(errp, "Cannot disable IPv4 and IPv6 at same time"); 1321856835dSDaniel P. Berrange return PF_UNSPEC; 1331856835dSDaniel P. Berrange } 13494bc0d19SDaniel P. Berrange if ((addr->has_ipv6 && addr->ipv6) && (addr->has_ipv4 && addr->ipv4)) { 13594bc0d19SDaniel P. Berrange /* 13694bc0d19SDaniel P. Berrange * Some backends can only do a single listener. In that case 13794bc0d19SDaniel P. Berrange * we want empty hostname to resolve to "::" and then use the 13894bc0d19SDaniel P. Berrange * flag IPV6_V6ONLY==0 to get both protocols on 1 socket. This 13994bc0d19SDaniel P. Berrange * doesn't work for addresses other than "", so they're just 14094bc0d19SDaniel P. Berrange * inevitably broken until multiple listeners can be used, 14194bc0d19SDaniel P. Berrange * and thus we honour getaddrinfo automatic protocol detection 14294bc0d19SDaniel P. Berrange * Once all backends do multi-listener, remove the PF_INET6 14394bc0d19SDaniel P. Berrange * branch entirely. 14494bc0d19SDaniel P. Berrange */ 14594bc0d19SDaniel P. Berrange if (!addr->host || g_str_equal(addr->host, "")) { 14694bc0d19SDaniel P. Berrange return PF_INET6; 14794bc0d19SDaniel P. Berrange } else { 14894bc0d19SDaniel P. Berrange return PF_UNSPEC; 14994bc0d19SDaniel P. Berrange } 15094bc0d19SDaniel P. Berrange } 1511856835dSDaniel P. Berrange if ((addr->has_ipv6 && addr->ipv6) || (addr->has_ipv4 && !addr->ipv4)) { 1521856835dSDaniel P. Berrange return PF_INET6; 1531856835dSDaniel P. Berrange } 1541856835dSDaniel P. Berrange if ((addr->has_ipv4 && addr->ipv4) || (addr->has_ipv6 && !addr->ipv6)) { 1551856835dSDaniel P. Berrange return PF_INET; 1561856835dSDaniel P. Berrange } 1571856835dSDaniel P. Berrange return PF_UNSPEC; 1581856835dSDaniel P. Berrange } 1591856835dSDaniel P. Berrange 16039f80521SKnut Omang static int create_fast_reuse_socket(struct addrinfo *e) 16139f80521SKnut Omang { 16239f80521SKnut Omang int slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); 16339f80521SKnut Omang if (slisten < 0) { 16439f80521SKnut Omang return -1; 16539f80521SKnut Omang } 16639f80521SKnut Omang socket_set_fast_reuse(slisten); 16739f80521SKnut Omang return slisten; 16839f80521SKnut Omang } 16939f80521SKnut Omang 17089382c3dSKnut Omang static int try_bind(int socket, InetSocketAddress *saddr, struct addrinfo *e) 17189382c3dSKnut Omang { 17289382c3dSKnut Omang #ifndef IPV6_V6ONLY 17389382c3dSKnut Omang return bind(socket, e->ai_addr, e->ai_addrlen); 17489382c3dSKnut Omang #else 17589382c3dSKnut Omang /* 17689382c3dSKnut Omang * Deals with first & last cases in matrix in comment 17789382c3dSKnut Omang * for inet_ai_family_from_address(). 17889382c3dSKnut Omang */ 17989382c3dSKnut Omang int v6only = 18089382c3dSKnut Omang ((!saddr->has_ipv4 && !saddr->has_ipv6) || 18189382c3dSKnut Omang (saddr->has_ipv4 && saddr->ipv4 && 18289382c3dSKnut Omang saddr->has_ipv6 && saddr->ipv6)) ? 0 : 1; 18389382c3dSKnut Omang int stat; 18489382c3dSKnut Omang 18589382c3dSKnut Omang rebind: 18689382c3dSKnut Omang if (e->ai_family == PF_INET6) { 18789382c3dSKnut Omang qemu_setsockopt(socket, IPPROTO_IPV6, IPV6_V6ONLY, &v6only, 18889382c3dSKnut Omang sizeof(v6only)); 18989382c3dSKnut Omang } 19089382c3dSKnut Omang 19189382c3dSKnut Omang stat = bind(socket, e->ai_addr, e->ai_addrlen); 19289382c3dSKnut Omang if (!stat) { 19389382c3dSKnut Omang return 0; 19489382c3dSKnut Omang } 19589382c3dSKnut Omang 19689382c3dSKnut Omang /* If we got EADDRINUSE from an IPv6 bind & v6only is unset, 19789382c3dSKnut Omang * it could be that the IPv4 port is already claimed, so retry 19889382c3dSKnut Omang * with v6only set 19989382c3dSKnut Omang */ 20089382c3dSKnut Omang if (e->ai_family == PF_INET6 && errno == EADDRINUSE && !v6only) { 20189382c3dSKnut Omang v6only = 1; 20289382c3dSKnut Omang goto rebind; 20389382c3dSKnut Omang } 20489382c3dSKnut Omang return stat; 20589382c3dSKnut Omang #endif 20689382c3dSKnut Omang } 20789382c3dSKnut Omang 2081856835dSDaniel P. Berrange static int inet_listen_saddr(InetSocketAddress *saddr, 2091856835dSDaniel P. Berrange int port_offset, 2101856835dSDaniel P. Berrange Error **errp) 211baacf047SPaolo Bonzini { 212baacf047SPaolo Bonzini struct addrinfo ai,*res,*e; 213baacf047SPaolo Bonzini char port[33]; 214baacf047SPaolo Bonzini char uaddr[INET6_ADDRSTRLEN+1]; 215baacf047SPaolo Bonzini char uport[33]; 2169cf961bbSKnut Omang int rc, port_min, port_max, p; 21710a7b7e6SDaniel P. Berrange int slisten = -1; 2189cf961bbSKnut Omang int saved_errno = 0; 2199cf961bbSKnut Omang bool socket_created = false; 2201856835dSDaniel P. Berrange Error *err = NULL; 221baacf047SPaolo Bonzini 222*aec21d31SVladimir Sementsov-Ogievskiy if (saddr->keep_alive) { 223*aec21d31SVladimir Sementsov-Ogievskiy error_setg(errp, "keep-alive option is not supported for passive " 224*aec21d31SVladimir Sementsov-Ogievskiy "sockets"); 225*aec21d31SVladimir Sementsov-Ogievskiy return -1; 226*aec21d31SVladimir Sementsov-Ogievskiy } 227*aec21d31SVladimir Sementsov-Ogievskiy 228baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 2293de3d698SWolfgang Bumiller ai.ai_flags = AI_PASSIVE; 2306979a813SDaniel P. Berrange if (saddr->has_numeric && saddr->numeric) { 2316979a813SDaniel P. Berrange ai.ai_flags |= AI_NUMERICHOST | AI_NUMERICSERV; 2326979a813SDaniel P. Berrange } 2331856835dSDaniel P. Berrange ai.ai_family = inet_ai_family_from_address(saddr, &err); 234baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 235baacf047SPaolo Bonzini 2361856835dSDaniel P. Berrange if (err) { 2371856835dSDaniel P. Berrange error_propagate(errp, err); 2381856835dSDaniel P. Berrange return -1; 2391856835dSDaniel P. Berrange } 2401856835dSDaniel P. Berrange 2411856835dSDaniel P. Berrange if (saddr->host == NULL) { 2420983f5e6SDaniel P. Berrange error_setg(errp, "host not specified"); 243baacf047SPaolo Bonzini return -1; 244baacf047SPaolo Bonzini } 2451856835dSDaniel P. Berrange if (saddr->port != NULL) { 2461856835dSDaniel P. Berrange pstrcpy(port, sizeof(port), saddr->port); 2470983f5e6SDaniel P. Berrange } else { 2480983f5e6SDaniel P. Berrange port[0] = '\0'; 2490983f5e6SDaniel P. Berrange } 250baacf047SPaolo Bonzini 251baacf047SPaolo Bonzini /* lookup */ 2528bc89127SGerd Hoffmann if (port_offset) { 2538bc89127SGerd Hoffmann unsigned long long baseport; 2540983f5e6SDaniel P. Berrange if (strlen(port) == 0) { 2550983f5e6SDaniel P. Berrange error_setg(errp, "port not specified"); 2560983f5e6SDaniel P. Berrange return -1; 2570983f5e6SDaniel P. Berrange } 2588bc89127SGerd Hoffmann if (parse_uint_full(port, &baseport, 10) < 0) { 2598bc89127SGerd Hoffmann error_setg(errp, "can't convert to a number: %s", port); 2608bc89127SGerd Hoffmann return -1; 2618bc89127SGerd Hoffmann } 2628bc89127SGerd Hoffmann if (baseport > 65535 || 2638bc89127SGerd Hoffmann baseport + port_offset > 65535) { 2648bc89127SGerd Hoffmann error_setg(errp, "port %s out of range", port); 2658bc89127SGerd Hoffmann return -1; 2668bc89127SGerd Hoffmann } 2678bc89127SGerd Hoffmann snprintf(port, sizeof(port), "%d", (int)baseport + port_offset); 2688bc89127SGerd Hoffmann } 2691856835dSDaniel P. Berrange rc = getaddrinfo(strlen(saddr->host) ? saddr->host : NULL, 2700983f5e6SDaniel P. Berrange strlen(port) ? port : NULL, &ai, &res); 271baacf047SPaolo Bonzini if (rc != 0) { 2721856835dSDaniel P. Berrange error_setg(errp, "address resolution failed for %s:%s: %s", 2731856835dSDaniel P. Berrange saddr->host, port, gai_strerror(rc)); 274baacf047SPaolo Bonzini return -1; 275baacf047SPaolo Bonzini } 276baacf047SPaolo Bonzini 2779cf961bbSKnut Omang /* create socket + bind/listen */ 278baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 279baacf047SPaolo Bonzini getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, 280baacf047SPaolo Bonzini uaddr,INET6_ADDRSTRLEN,uport,32, 281baacf047SPaolo Bonzini NI_NUMERICHOST | NI_NUMERICSERV); 28239f80521SKnut Omang 283baacf047SPaolo Bonzini port_min = inet_getport(e); 2841856835dSDaniel P. Berrange port_max = saddr->has_to ? saddr->to + port_offset : port_min; 285baacf047SPaolo Bonzini for (p = port_min; p <= port_max; p++) { 286baacf047SPaolo Bonzini inet_setport(e, p); 28710a7b7e6SDaniel P. Berrange 28810a7b7e6SDaniel P. Berrange slisten = create_fast_reuse_socket(e); 28910a7b7e6SDaniel P. Berrange if (slisten < 0) { 29010a7b7e6SDaniel P. Berrange /* First time we expect we might fail to create the socket 29110a7b7e6SDaniel P. Berrange * eg if 'e' has AF_INET6 but ipv6 kmod is not loaded. 29210a7b7e6SDaniel P. Berrange * Later iterations should always succeed if first iteration 29310a7b7e6SDaniel P. Berrange * worked though, so treat that as fatal. 29410a7b7e6SDaniel P. Berrange */ 29510a7b7e6SDaniel P. Berrange if (p == port_min) { 2969cf961bbSKnut Omang continue; 2979cf961bbSKnut Omang } else { 29810a7b7e6SDaniel P. Berrange error_setg_errno(errp, errno, 29910a7b7e6SDaniel P. Berrange "Failed to recreate failed listening socket"); 3009cf961bbSKnut Omang goto listen_failed; 3019cf961bbSKnut Omang } 3029cf961bbSKnut Omang } 30310a7b7e6SDaniel P. Berrange socket_created = true; 30410a7b7e6SDaniel P. Berrange 30510a7b7e6SDaniel P. Berrange rc = try_bind(slisten, saddr, e); 30610a7b7e6SDaniel P. Berrange if (rc < 0) { 30710a7b7e6SDaniel P. Berrange if (errno != EADDRINUSE) { 30810a7b7e6SDaniel P. Berrange error_setg_errno(errp, errno, "Failed to bind socket"); 30910a7b7e6SDaniel P. Berrange goto listen_failed; 31010a7b7e6SDaniel P. Berrange } 31110a7b7e6SDaniel P. Berrange } else { 3129cf961bbSKnut Omang if (!listen(slisten, 1)) { 3139cf961bbSKnut Omang goto listen_ok; 3149cf961bbSKnut Omang } 3159cf961bbSKnut Omang if (errno != EADDRINUSE) { 3169cf961bbSKnut Omang error_setg_errno(errp, errno, "Failed to listen on socket"); 3179cf961bbSKnut Omang goto listen_failed; 3189cf961bbSKnut Omang } 31910a7b7e6SDaniel P. Berrange } 3209cf961bbSKnut Omang /* Someone else managed to bind to the same port and beat us 3219cf961bbSKnut Omang * to listen on it! Socket semantics does not allow us to 3229cf961bbSKnut Omang * recover from this situation, so we need to recreate the 3239cf961bbSKnut Omang * socket to allow bind attempts for subsequent ports: 3249cf961bbSKnut Omang */ 3259cf961bbSKnut Omang closesocket(slisten); 32610a7b7e6SDaniel P. Berrange slisten = -1; 327baacf047SPaolo Bonzini } 328baacf047SPaolo Bonzini } 3299cf961bbSKnut Omang error_setg_errno(errp, errno, 3309cf961bbSKnut Omang socket_created ? 3319cf961bbSKnut Omang "Failed to find an available port" : 3329cf961bbSKnut Omang "Failed to create a socket"); 3339cf961bbSKnut Omang listen_failed: 3349cf961bbSKnut Omang saved_errno = errno; 3359cf961bbSKnut Omang if (slisten >= 0) { 336baacf047SPaolo Bonzini closesocket(slisten); 337baacf047SPaolo Bonzini } 338baacf047SPaolo Bonzini freeaddrinfo(res); 3399cf961bbSKnut Omang errno = saved_errno; 340baacf047SPaolo Bonzini return -1; 341baacf047SPaolo Bonzini 3429cf961bbSKnut Omang listen_ok: 343baacf047SPaolo Bonzini freeaddrinfo(res); 344baacf047SPaolo Bonzini return slisten; 345baacf047SPaolo Bonzini } 346baacf047SPaolo Bonzini 347baacf047SPaolo Bonzini #ifdef _WIN32 348baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 349baacf047SPaolo Bonzini ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) 350baacf047SPaolo Bonzini #else 351baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 352baacf047SPaolo Bonzini ((rc) == -EINPROGRESS) 353baacf047SPaolo Bonzini #endif 354baacf047SPaolo Bonzini 355b2587932SCao jin static int inet_connect_addr(struct addrinfo *addr, Error **errp); 356baacf047SPaolo Bonzini 357b2587932SCao jin static int inet_connect_addr(struct addrinfo *addr, Error **errp) 358baacf047SPaolo Bonzini { 359baacf047SPaolo Bonzini int sock, rc; 360baacf047SPaolo Bonzini 361baacf047SPaolo Bonzini sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); 362baacf047SPaolo Bonzini if (sock < 0) { 363235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 364baacf047SPaolo Bonzini return -1; 365baacf047SPaolo Bonzini } 36604fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 367b2587932SCao jin 368baacf047SPaolo Bonzini /* connect to peer */ 369baacf047SPaolo Bonzini do { 370baacf047SPaolo Bonzini rc = 0; 371baacf047SPaolo Bonzini if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { 372b16a44e1SDaniel P. Berrange rc = -errno; 373baacf047SPaolo Bonzini } 374baacf047SPaolo Bonzini } while (rc == -EINTR); 375baacf047SPaolo Bonzini 376b2587932SCao jin if (rc < 0) { 377235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to connect socket"); 378baacf047SPaolo Bonzini closesocket(sock); 379baacf047SPaolo Bonzini return -1; 380baacf047SPaolo Bonzini } 381b2587932SCao jin 382baacf047SPaolo Bonzini return sock; 383baacf047SPaolo Bonzini } 384baacf047SPaolo Bonzini 3852942e420SDaniel P. Berrange static struct addrinfo *inet_parse_connect_saddr(InetSocketAddress *saddr, 3862942e420SDaniel P. Berrange Error **errp) 387baacf047SPaolo Bonzini { 388baacf047SPaolo Bonzini struct addrinfo ai, *res; 389baacf047SPaolo Bonzini int rc; 3902942e420SDaniel P. Berrange Error *err = NULL; 391340849a9SDaniel P. Berrange static int useV4Mapped = 1; 392baacf047SPaolo Bonzini 393baacf047SPaolo Bonzini memset(&ai, 0, sizeof(ai)); 394baacf047SPaolo Bonzini 395340849a9SDaniel P. Berrange ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; 396340849a9SDaniel P. Berrange if (atomic_read(&useV4Mapped)) { 397340849a9SDaniel P. Berrange ai.ai_flags |= AI_V4MAPPED; 398340849a9SDaniel P. Berrange } 3992942e420SDaniel P. Berrange ai.ai_family = inet_ai_family_from_address(saddr, &err); 400baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 401baacf047SPaolo Bonzini 4022942e420SDaniel P. Berrange if (err) { 4032942e420SDaniel P. Berrange error_propagate(errp, err); 4042942e420SDaniel P. Berrange return NULL; 4052942e420SDaniel P. Berrange } 4062942e420SDaniel P. Berrange 4072942e420SDaniel P. Berrange if (saddr->host == NULL || saddr->port == NULL) { 408baacf047SPaolo Bonzini error_setg(errp, "host and/or port not specified"); 409baacf047SPaolo Bonzini return NULL; 410baacf047SPaolo Bonzini } 411baacf047SPaolo Bonzini 412baacf047SPaolo Bonzini /* lookup */ 4132942e420SDaniel P. Berrange rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); 414340849a9SDaniel P. Berrange 415340849a9SDaniel P. Berrange /* At least FreeBSD and OS-X 10.6 declare AI_V4MAPPED but 416340849a9SDaniel P. Berrange * then don't implement it in their getaddrinfo(). Detect 417340849a9SDaniel P. Berrange * this and retry without the flag since that's preferrable 418340849a9SDaniel P. Berrange * to a fatal error 419340849a9SDaniel P. Berrange */ 420340849a9SDaniel P. Berrange if (rc == EAI_BADFLAGS && 421340849a9SDaniel P. Berrange (ai.ai_flags & AI_V4MAPPED)) { 422340849a9SDaniel P. Berrange atomic_set(&useV4Mapped, 0); 423340849a9SDaniel P. Berrange ai.ai_flags &= ~AI_V4MAPPED; 424340849a9SDaniel P. Berrange rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); 425340849a9SDaniel P. Berrange } 426baacf047SPaolo Bonzini if (rc != 0) { 4272942e420SDaniel P. Berrange error_setg(errp, "address resolution failed for %s:%s: %s", 4282942e420SDaniel P. Berrange saddr->host, saddr->port, gai_strerror(rc)); 429baacf047SPaolo Bonzini return NULL; 430baacf047SPaolo Bonzini } 431baacf047SPaolo Bonzini return res; 432baacf047SPaolo Bonzini } 433baacf047SPaolo Bonzini 434baacf047SPaolo Bonzini /** 435baacf047SPaolo Bonzini * Create a socket and connect it to an address. 436baacf047SPaolo Bonzini * 4372942e420SDaniel P. Berrange * @saddr: Inet socket address specification 438baacf047SPaolo Bonzini * @errp: set on error 439baacf047SPaolo Bonzini * 440baacf047SPaolo Bonzini * Returns: -1 on error, file descriptor on success. 441baacf047SPaolo Bonzini */ 442b2587932SCao jin int inet_connect_saddr(InetSocketAddress *saddr, Error **errp) 443baacf047SPaolo Bonzini { 4443f9286b7SMarkus Armbruster Error *local_err = NULL; 445baacf047SPaolo Bonzini struct addrinfo *res, *e; 446baacf047SPaolo Bonzini int sock = -1; 447baacf047SPaolo Bonzini 4482942e420SDaniel P. Berrange res = inet_parse_connect_saddr(saddr, errp); 449baacf047SPaolo Bonzini if (!res) { 450baacf047SPaolo Bonzini return -1; 451baacf047SPaolo Bonzini } 452baacf047SPaolo Bonzini 453baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 4543f9286b7SMarkus Armbruster error_free(local_err); 4553f9286b7SMarkus Armbruster local_err = NULL; 456b2587932SCao jin sock = inet_connect_addr(e, &local_err); 4573f9286b7SMarkus Armbruster if (sock >= 0) { 458baacf047SPaolo Bonzini break; 459baacf047SPaolo Bonzini } 460baacf047SPaolo Bonzini } 4613f9286b7SMarkus Armbruster 4623f9286b7SMarkus Armbruster if (sock < 0) { 4633f9286b7SMarkus Armbruster error_propagate(errp, local_err); 4643f9286b7SMarkus Armbruster } 465b2587932SCao jin 466baacf047SPaolo Bonzini freeaddrinfo(res); 467*aec21d31SVladimir Sementsov-Ogievskiy 468*aec21d31SVladimir Sementsov-Ogievskiy if (saddr->keep_alive) { 469*aec21d31SVladimir Sementsov-Ogievskiy int val = 1; 470*aec21d31SVladimir Sementsov-Ogievskiy int ret = qemu_setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, 471*aec21d31SVladimir Sementsov-Ogievskiy &val, sizeof(val)); 472*aec21d31SVladimir Sementsov-Ogievskiy 473*aec21d31SVladimir Sementsov-Ogievskiy if (ret < 0) { 474*aec21d31SVladimir Sementsov-Ogievskiy error_setg_errno(errp, errno, "Unable to set KEEPALIVE"); 475*aec21d31SVladimir Sementsov-Ogievskiy close(sock); 476*aec21d31SVladimir Sementsov-Ogievskiy return -1; 477*aec21d31SVladimir Sementsov-Ogievskiy } 478*aec21d31SVladimir Sementsov-Ogievskiy } 479*aec21d31SVladimir Sementsov-Ogievskiy 480baacf047SPaolo Bonzini return sock; 481baacf047SPaolo Bonzini } 482baacf047SPaolo Bonzini 4838b39910eSDaniel P. Berrange static int inet_dgram_saddr(InetSocketAddress *sraddr, 4848b39910eSDaniel P. Berrange InetSocketAddress *sladdr, 4858b39910eSDaniel P. Berrange Error **errp) 486baacf047SPaolo Bonzini { 487baacf047SPaolo Bonzini struct addrinfo ai, *peer = NULL, *local = NULL; 488baacf047SPaolo Bonzini const char *addr; 489baacf047SPaolo Bonzini const char *port; 490baacf047SPaolo Bonzini int sock = -1, rc; 4918b39910eSDaniel P. Berrange Error *err = NULL; 492baacf047SPaolo Bonzini 493baacf047SPaolo Bonzini /* lookup peer addr */ 494baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 4953de3d698SWolfgang Bumiller ai.ai_flags = AI_CANONNAME | AI_V4MAPPED | AI_ADDRCONFIG; 4968b39910eSDaniel P. Berrange ai.ai_family = inet_ai_family_from_address(sraddr, &err); 497baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 498baacf047SPaolo Bonzini 4998b39910eSDaniel P. Berrange if (err) { 5008b39910eSDaniel P. Berrange error_propagate(errp, err); 50158c652c0SPaolo Bonzini goto err; 5028b39910eSDaniel P. Berrange } 5038b39910eSDaniel P. Berrange 5048b39910eSDaniel P. Berrange addr = sraddr->host; 5058b39910eSDaniel P. Berrange port = sraddr->port; 506baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 507baacf047SPaolo Bonzini addr = "localhost"; 508baacf047SPaolo Bonzini } 509baacf047SPaolo Bonzini if (port == NULL || strlen(port) == 0) { 510baacf047SPaolo Bonzini error_setg(errp, "remote port not specified"); 51158c652c0SPaolo Bonzini goto err; 512baacf047SPaolo Bonzini } 513baacf047SPaolo Bonzini 5149cd1883cSCao jin if ((rc = getaddrinfo(addr, port, &ai, &peer)) != 0) { 515baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 516baacf047SPaolo Bonzini gai_strerror(rc)); 51758c652c0SPaolo Bonzini goto err; 518baacf047SPaolo Bonzini } 519baacf047SPaolo Bonzini 520baacf047SPaolo Bonzini /* lookup local addr */ 521baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 522baacf047SPaolo Bonzini ai.ai_flags = AI_PASSIVE; 523baacf047SPaolo Bonzini ai.ai_family = peer->ai_family; 524baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 525baacf047SPaolo Bonzini 5268b39910eSDaniel P. Berrange if (sladdr) { 5278b39910eSDaniel P. Berrange addr = sladdr->host; 5288b39910eSDaniel P. Berrange port = sladdr->port; 529baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 530baacf047SPaolo Bonzini addr = NULL; 531baacf047SPaolo Bonzini } 5328b39910eSDaniel P. Berrange if (!port || strlen(port) == 0) { 533baacf047SPaolo Bonzini port = "0"; 5348b39910eSDaniel P. Berrange } 5358b39910eSDaniel P. Berrange } else { 5368b39910eSDaniel P. Berrange addr = NULL; 5378b39910eSDaniel P. Berrange port = "0"; 5388b39910eSDaniel P. Berrange } 539baacf047SPaolo Bonzini 5409cd1883cSCao jin if ((rc = getaddrinfo(addr, port, &ai, &local)) != 0) { 541baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 542baacf047SPaolo Bonzini gai_strerror(rc)); 543baacf047SPaolo Bonzini goto err; 544baacf047SPaolo Bonzini } 545baacf047SPaolo Bonzini 546baacf047SPaolo Bonzini /* create socket */ 547baacf047SPaolo Bonzini sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); 548baacf047SPaolo Bonzini if (sock < 0) { 549235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 550baacf047SPaolo Bonzini goto err; 551baacf047SPaolo Bonzini } 55204fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 553baacf047SPaolo Bonzini 554baacf047SPaolo Bonzini /* bind socket */ 555baacf047SPaolo Bonzini if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { 556235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to bind socket"); 557baacf047SPaolo Bonzini goto err; 558baacf047SPaolo Bonzini } 559baacf047SPaolo Bonzini 560baacf047SPaolo Bonzini /* connect to peer */ 561baacf047SPaolo Bonzini if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { 562235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to connect socket"); 563baacf047SPaolo Bonzini goto err; 564baacf047SPaolo Bonzini } 565baacf047SPaolo Bonzini 566baacf047SPaolo Bonzini freeaddrinfo(local); 567baacf047SPaolo Bonzini freeaddrinfo(peer); 568baacf047SPaolo Bonzini return sock; 569baacf047SPaolo Bonzini 570baacf047SPaolo Bonzini err: 57126015051SCao jin if (sock != -1) { 572baacf047SPaolo Bonzini closesocket(sock); 57326015051SCao jin } 57426015051SCao jin if (local) { 575baacf047SPaolo Bonzini freeaddrinfo(local); 57626015051SCao jin } 57726015051SCao jin if (peer) { 578baacf047SPaolo Bonzini freeaddrinfo(peer); 57926015051SCao jin } 58026015051SCao jin 581baacf047SPaolo Bonzini return -1; 582baacf047SPaolo Bonzini } 583baacf047SPaolo Bonzini 584baacf047SPaolo Bonzini /* compatibility wrapper */ 5853e32370aSDaniel P. Berrange static int inet_parse_flag(const char *flagname, const char *optstr, bool *val, 5863e32370aSDaniel P. Berrange Error **errp) 5873e32370aSDaniel P. Berrange { 5883e32370aSDaniel P. Berrange char *end; 5893e32370aSDaniel P. Berrange size_t len; 5903e32370aSDaniel P. Berrange 5913e32370aSDaniel P. Berrange end = strstr(optstr, ","); 5923e32370aSDaniel P. Berrange if (end) { 5933e32370aSDaniel P. Berrange if (end[1] == ',') { /* Reject 'ipv6=on,,foo' */ 5943e32370aSDaniel P. Berrange error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr); 5953e32370aSDaniel P. Berrange return -1; 5963e32370aSDaniel P. Berrange } 5973e32370aSDaniel P. Berrange len = end - optstr; 5983e32370aSDaniel P. Berrange } else { 5993e32370aSDaniel P. Berrange len = strlen(optstr); 6003e32370aSDaniel P. Berrange } 6013e32370aSDaniel P. Berrange if (len == 0 || (len == 3 && strncmp(optstr, "=on", len) == 0)) { 6023e32370aSDaniel P. Berrange *val = true; 6033e32370aSDaniel P. Berrange } else if (len == 4 && strncmp(optstr, "=off", len) == 0) { 6043e32370aSDaniel P. Berrange *val = false; 6053e32370aSDaniel P. Berrange } else { 6063e32370aSDaniel P. Berrange error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr); 6073e32370aSDaniel P. Berrange return -1; 6083e32370aSDaniel P. Berrange } 6093e32370aSDaniel P. Berrange return 0; 6103e32370aSDaniel P. Berrange } 6113e32370aSDaniel P. Berrange 6120785bd7aSMarkus Armbruster int inet_parse(InetSocketAddress *addr, const char *str, Error **errp) 613baacf047SPaolo Bonzini { 614baacf047SPaolo Bonzini const char *optstr, *h; 61555a10996SKevin Wolf char host[65]; 616baacf047SPaolo Bonzini char port[33]; 617baacf047SPaolo Bonzini int to; 618baacf047SPaolo Bonzini int pos; 6193e32370aSDaniel P. Berrange char *begin; 620baacf047SPaolo Bonzini 6210785bd7aSMarkus Armbruster memset(addr, 0, sizeof(*addr)); 622baacf047SPaolo Bonzini 623baacf047SPaolo Bonzini /* parse address */ 624baacf047SPaolo Bonzini if (str[0] == ':') { 625baacf047SPaolo Bonzini /* no host given */ 626baacf047SPaolo Bonzini host[0] = '\0'; 6279cd1883cSCao jin if (sscanf(str, ":%32[^,]%n", port, &pos) != 1) { 628baacf047SPaolo Bonzini error_setg(errp, "error parsing port in address '%s'", str); 6290785bd7aSMarkus Armbruster return -1; 630baacf047SPaolo Bonzini } 631baacf047SPaolo Bonzini } else if (str[0] == '[') { 632baacf047SPaolo Bonzini /* IPv6 addr */ 6339cd1883cSCao jin if (sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos) != 2) { 634baacf047SPaolo Bonzini error_setg(errp, "error parsing IPv6 address '%s'", str); 6350785bd7aSMarkus Armbruster return -1; 636baacf047SPaolo Bonzini } 637baacf047SPaolo Bonzini } else { 638391b7b97SJán Tomko /* hostname or IPv4 addr */ 6399cd1883cSCao jin if (sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos) != 2) { 640baacf047SPaolo Bonzini error_setg(errp, "error parsing address '%s'", str); 6410785bd7aSMarkus Armbruster return -1; 642baacf047SPaolo Bonzini } 643baacf047SPaolo Bonzini } 644baacf047SPaolo Bonzini 645baacf047SPaolo Bonzini addr->host = g_strdup(host); 646baacf047SPaolo Bonzini addr->port = g_strdup(port); 647baacf047SPaolo Bonzini 648baacf047SPaolo Bonzini /* parse options */ 649baacf047SPaolo Bonzini optstr = str + pos; 650baacf047SPaolo Bonzini h = strstr(optstr, ",to="); 651baacf047SPaolo Bonzini if (h) { 652baacf047SPaolo Bonzini h += 4; 653baacf047SPaolo Bonzini if (sscanf(h, "%d%n", &to, &pos) != 1 || 654baacf047SPaolo Bonzini (h[pos] != '\0' && h[pos] != ',')) { 655baacf047SPaolo Bonzini error_setg(errp, "error parsing to= argument"); 6560785bd7aSMarkus Armbruster return -1; 657baacf047SPaolo Bonzini } 658baacf047SPaolo Bonzini addr->has_to = true; 659baacf047SPaolo Bonzini addr->to = to; 660baacf047SPaolo Bonzini } 6613e32370aSDaniel P. Berrange begin = strstr(optstr, ",ipv4"); 6623e32370aSDaniel P. Berrange if (begin) { 6633e32370aSDaniel P. Berrange if (inet_parse_flag("ipv4", begin + 5, &addr->ipv4, errp) < 0) { 6643e32370aSDaniel P. Berrange return -1; 665baacf047SPaolo Bonzini } 6663e32370aSDaniel P. Berrange addr->has_ipv4 = true; 6673e32370aSDaniel P. Berrange } 6683e32370aSDaniel P. Berrange begin = strstr(optstr, ",ipv6"); 6693e32370aSDaniel P. Berrange if (begin) { 6703e32370aSDaniel P. Berrange if (inet_parse_flag("ipv6", begin + 5, &addr->ipv6, errp) < 0) { 6713e32370aSDaniel P. Berrange return -1; 6723e32370aSDaniel P. Berrange } 6733e32370aSDaniel P. Berrange addr->has_ipv6 = true; 674baacf047SPaolo Bonzini } 675*aec21d31SVladimir Sementsov-Ogievskiy begin = strstr(optstr, ",keep-alive"); 676*aec21d31SVladimir Sementsov-Ogievskiy if (begin) { 677*aec21d31SVladimir Sementsov-Ogievskiy if (inet_parse_flag("keep-alive", begin + strlen(",keep-alive"), 678*aec21d31SVladimir Sementsov-Ogievskiy &addr->keep_alive, errp) < 0) 679*aec21d31SVladimir Sementsov-Ogievskiy { 680*aec21d31SVladimir Sementsov-Ogievskiy return -1; 681*aec21d31SVladimir Sementsov-Ogievskiy } 682*aec21d31SVladimir Sementsov-Ogievskiy addr->has_keep_alive = true; 683*aec21d31SVladimir Sementsov-Ogievskiy } 6840785bd7aSMarkus Armbruster return 0; 685baacf047SPaolo Bonzini } 686baacf047SPaolo Bonzini 687baacf047SPaolo Bonzini 688baacf047SPaolo Bonzini /** 689baacf047SPaolo Bonzini * Create a blocking socket and connect it to an address. 690baacf047SPaolo Bonzini * 691baacf047SPaolo Bonzini * @str: address string 692baacf047SPaolo Bonzini * @errp: set in case of an error 693baacf047SPaolo Bonzini * 694baacf047SPaolo Bonzini * Returns -1 in case of error, file descriptor on success 695baacf047SPaolo Bonzini **/ 696baacf047SPaolo Bonzini int inet_connect(const char *str, Error **errp) 697baacf047SPaolo Bonzini { 698baacf047SPaolo Bonzini int sock = -1; 6990785bd7aSMarkus Armbruster InetSocketAddress *addr = g_new(InetSocketAddress, 1); 700baacf047SPaolo Bonzini 7010785bd7aSMarkus Armbruster if (!inet_parse(addr, str, errp)) { 702b2587932SCao jin sock = inet_connect_saddr(addr, errp); 703baacf047SPaolo Bonzini } 7040785bd7aSMarkus Armbruster qapi_free_InetSocketAddress(addr); 705baacf047SPaolo Bonzini return sock; 706baacf047SPaolo Bonzini } 707baacf047SPaolo Bonzini 7086a02c806SStefan Hajnoczi #ifdef CONFIG_AF_VSOCK 7096a02c806SStefan Hajnoczi static bool vsock_parse_vaddr_to_sockaddr(const VsockSocketAddress *vaddr, 7106a02c806SStefan Hajnoczi struct sockaddr_vm *svm, 7116a02c806SStefan Hajnoczi Error **errp) 7126a02c806SStefan Hajnoczi { 7136a02c806SStefan Hajnoczi unsigned long long val; 7146a02c806SStefan Hajnoczi 7156a02c806SStefan Hajnoczi memset(svm, 0, sizeof(*svm)); 7166a02c806SStefan Hajnoczi svm->svm_family = AF_VSOCK; 7176a02c806SStefan Hajnoczi 7186a02c806SStefan Hajnoczi if (parse_uint_full(vaddr->cid, &val, 10) < 0 || 7196a02c806SStefan Hajnoczi val > UINT32_MAX) { 7206a02c806SStefan Hajnoczi error_setg(errp, "Failed to parse cid '%s'", vaddr->cid); 7216a02c806SStefan Hajnoczi return false; 7226a02c806SStefan Hajnoczi } 7236a02c806SStefan Hajnoczi svm->svm_cid = val; 7246a02c806SStefan Hajnoczi 7256a02c806SStefan Hajnoczi if (parse_uint_full(vaddr->port, &val, 10) < 0 || 7266a02c806SStefan Hajnoczi val > UINT32_MAX) { 7276a02c806SStefan Hajnoczi error_setg(errp, "Failed to parse port '%s'", vaddr->port); 7286a02c806SStefan Hajnoczi return false; 7296a02c806SStefan Hajnoczi } 7306a02c806SStefan Hajnoczi svm->svm_port = val; 7316a02c806SStefan Hajnoczi 7326a02c806SStefan Hajnoczi return true; 7336a02c806SStefan Hajnoczi } 7346a02c806SStefan Hajnoczi 735b2587932SCao jin static int vsock_connect_addr(const struct sockaddr_vm *svm, Error **errp) 7366a02c806SStefan Hajnoczi { 7376a02c806SStefan Hajnoczi int sock, rc; 7386a02c806SStefan Hajnoczi 7396a02c806SStefan Hajnoczi sock = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); 7406a02c806SStefan Hajnoczi if (sock < 0) { 7416a02c806SStefan Hajnoczi error_setg_errno(errp, errno, "Failed to create socket"); 7426a02c806SStefan Hajnoczi return -1; 7436a02c806SStefan Hajnoczi } 744b2587932SCao jin 7456a02c806SStefan Hajnoczi /* connect to peer */ 7466a02c806SStefan Hajnoczi do { 7476a02c806SStefan Hajnoczi rc = 0; 7486a02c806SStefan Hajnoczi if (connect(sock, (const struct sockaddr *)svm, sizeof(*svm)) < 0) { 7496a02c806SStefan Hajnoczi rc = -errno; 7506a02c806SStefan Hajnoczi } 7516a02c806SStefan Hajnoczi } while (rc == -EINTR); 7526a02c806SStefan Hajnoczi 753b2587932SCao jin if (rc < 0) { 7546a02c806SStefan Hajnoczi error_setg_errno(errp, errno, "Failed to connect socket"); 7556a02c806SStefan Hajnoczi closesocket(sock); 7566a02c806SStefan Hajnoczi return -1; 7576a02c806SStefan Hajnoczi } 758b2587932SCao jin 7596a02c806SStefan Hajnoczi return sock; 7606a02c806SStefan Hajnoczi } 7616a02c806SStefan Hajnoczi 762b2587932SCao jin static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) 7636a02c806SStefan Hajnoczi { 7646a02c806SStefan Hajnoczi struct sockaddr_vm svm; 7656a02c806SStefan Hajnoczi int sock = -1; 7666a02c806SStefan Hajnoczi 7676a02c806SStefan Hajnoczi if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { 7686a02c806SStefan Hajnoczi return -1; 7696a02c806SStefan Hajnoczi } 7706a02c806SStefan Hajnoczi 771b2587932SCao jin sock = vsock_connect_addr(&svm, errp); 7726a02c806SStefan Hajnoczi 7736a02c806SStefan Hajnoczi return sock; 7746a02c806SStefan Hajnoczi } 7756a02c806SStefan Hajnoczi 7766a02c806SStefan Hajnoczi static int vsock_listen_saddr(VsockSocketAddress *vaddr, 7776a02c806SStefan Hajnoczi Error **errp) 7786a02c806SStefan Hajnoczi { 7796a02c806SStefan Hajnoczi struct sockaddr_vm svm; 7806a02c806SStefan Hajnoczi int slisten; 7816a02c806SStefan Hajnoczi 7826a02c806SStefan Hajnoczi if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { 7836a02c806SStefan Hajnoczi return -1; 7846a02c806SStefan Hajnoczi } 7856a02c806SStefan Hajnoczi 7866a02c806SStefan Hajnoczi slisten = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); 7876a02c806SStefan Hajnoczi if (slisten < 0) { 7886a02c806SStefan Hajnoczi error_setg_errno(errp, errno, "Failed to create socket"); 7896a02c806SStefan Hajnoczi return -1; 7906a02c806SStefan Hajnoczi } 7916a02c806SStefan Hajnoczi 7926a02c806SStefan Hajnoczi if (bind(slisten, (const struct sockaddr *)&svm, sizeof(svm)) != 0) { 7936a02c806SStefan Hajnoczi error_setg_errno(errp, errno, "Failed to bind socket"); 7946a02c806SStefan Hajnoczi closesocket(slisten); 7956a02c806SStefan Hajnoczi return -1; 7966a02c806SStefan Hajnoczi } 7976a02c806SStefan Hajnoczi 7986a02c806SStefan Hajnoczi if (listen(slisten, 1) != 0) { 7996a02c806SStefan Hajnoczi error_setg_errno(errp, errno, "Failed to listen on socket"); 8006a02c806SStefan Hajnoczi closesocket(slisten); 8016a02c806SStefan Hajnoczi return -1; 8026a02c806SStefan Hajnoczi } 8036a02c806SStefan Hajnoczi return slisten; 8046a02c806SStefan Hajnoczi } 8056a02c806SStefan Hajnoczi 8064db5c619SMarkus Armbruster static int vsock_parse(VsockSocketAddress *addr, const char *str, 8074db5c619SMarkus Armbruster Error **errp) 8086a02c806SStefan Hajnoczi { 8096a02c806SStefan Hajnoczi char cid[33]; 8106a02c806SStefan Hajnoczi char port[33]; 8116a02c806SStefan Hajnoczi int n; 8126a02c806SStefan Hajnoczi 8136a02c806SStefan Hajnoczi if (sscanf(str, "%32[^:]:%32[^,]%n", cid, port, &n) != 2) { 8146a02c806SStefan Hajnoczi error_setg(errp, "error parsing address '%s'", str); 8154db5c619SMarkus Armbruster return -1; 8166a02c806SStefan Hajnoczi } 8176a02c806SStefan Hajnoczi if (str[n] != '\0') { 8186a02c806SStefan Hajnoczi error_setg(errp, "trailing characters in address '%s'", str); 8194db5c619SMarkus Armbruster return -1; 8206a02c806SStefan Hajnoczi } 8216a02c806SStefan Hajnoczi 8226a02c806SStefan Hajnoczi addr->cid = g_strdup(cid); 8236a02c806SStefan Hajnoczi addr->port = g_strdup(port); 8244db5c619SMarkus Armbruster return 0; 8256a02c806SStefan Hajnoczi } 8266a02c806SStefan Hajnoczi #else 8276a02c806SStefan Hajnoczi static void vsock_unsupported(Error **errp) 8286a02c806SStefan Hajnoczi { 8296a02c806SStefan Hajnoczi error_setg(errp, "socket family AF_VSOCK unsupported"); 8306a02c806SStefan Hajnoczi } 8316a02c806SStefan Hajnoczi 832b2587932SCao jin static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) 8336a02c806SStefan Hajnoczi { 8346a02c806SStefan Hajnoczi vsock_unsupported(errp); 8356a02c806SStefan Hajnoczi return -1; 8366a02c806SStefan Hajnoczi } 8376a02c806SStefan Hajnoczi 8386a02c806SStefan Hajnoczi static int vsock_listen_saddr(VsockSocketAddress *vaddr, 8396a02c806SStefan Hajnoczi Error **errp) 8406a02c806SStefan Hajnoczi { 8416a02c806SStefan Hajnoczi vsock_unsupported(errp); 8426a02c806SStefan Hajnoczi return -1; 8436a02c806SStefan Hajnoczi } 8446a02c806SStefan Hajnoczi 8454db5c619SMarkus Armbruster static int vsock_parse(VsockSocketAddress *addr, const char *str, 8464db5c619SMarkus Armbruster Error **errp) 8476a02c806SStefan Hajnoczi { 8486a02c806SStefan Hajnoczi vsock_unsupported(errp); 8494db5c619SMarkus Armbruster return -1; 8506a02c806SStefan Hajnoczi } 8516a02c806SStefan Hajnoczi #endif /* CONFIG_AF_VSOCK */ 8526a02c806SStefan Hajnoczi 853baacf047SPaolo Bonzini #ifndef _WIN32 854baacf047SPaolo Bonzini 8551856835dSDaniel P. Berrange static int unix_listen_saddr(UnixSocketAddress *saddr, 8561856835dSDaniel P. Berrange Error **errp) 857baacf047SPaolo Bonzini { 858baacf047SPaolo Bonzini struct sockaddr_un un; 859baacf047SPaolo Bonzini int sock, fd; 860ad9579aaSDaniel P. Berrange char *pathbuf = NULL; 861ad9579aaSDaniel P. Berrange const char *path; 8622d2023c3SDaniel P. Berrangé size_t pathlen; 863baacf047SPaolo Bonzini 864baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 865baacf047SPaolo Bonzini if (sock < 0) { 866b658c53dSPaolo Bonzini error_setg_errno(errp, errno, "Failed to create Unix socket"); 867baacf047SPaolo Bonzini return -1; 868baacf047SPaolo Bonzini } 869baacf047SPaolo Bonzini 870ad9579aaSDaniel P. Berrange if (saddr->path && saddr->path[0]) { 871ad9579aaSDaniel P. Berrange path = saddr->path; 872baacf047SPaolo Bonzini } else { 873b658c53dSPaolo Bonzini const char *tmpdir = getenv("TMPDIR"); 874b658c53dSPaolo Bonzini tmpdir = tmpdir ? tmpdir : "/tmp"; 875ad9579aaSDaniel P. Berrange path = pathbuf = g_strdup_printf("%s/qemu-socket-XXXXXX", tmpdir); 876ad9579aaSDaniel P. Berrange } 877ad9579aaSDaniel P. Berrange 8782d2023c3SDaniel P. Berrangé pathlen = strlen(path); 8792d2023c3SDaniel P. Berrangé if (pathlen > sizeof(un.sun_path)) { 880ad9579aaSDaniel P. Berrange error_setg(errp, "UNIX socket path '%s' is too long", path); 881ad9579aaSDaniel P. Berrange error_append_hint(errp, "Path must be less than %zu bytes\n", 882ad9579aaSDaniel P. Berrange sizeof(un.sun_path)); 883b658c53dSPaolo Bonzini goto err; 884b658c53dSPaolo Bonzini } 885b658c53dSPaolo Bonzini 886ad9579aaSDaniel P. Berrange if (pathbuf != NULL) { 887baacf047SPaolo Bonzini /* 888baacf047SPaolo Bonzini * This dummy fd usage silences the mktemp() unsecure warning. 889baacf047SPaolo Bonzini * Using mkstemp() doesn't make things more secure here 890baacf047SPaolo Bonzini * though. bind() complains about existing files, so we have 891baacf047SPaolo Bonzini * to unlink first and thus re-open the race window. The 892baacf047SPaolo Bonzini * worst case possible is bind() failing, i.e. a DoS attack. 893baacf047SPaolo Bonzini */ 894ad9579aaSDaniel P. Berrange fd = mkstemp(pathbuf); 895b658c53dSPaolo Bonzini if (fd < 0) { 896b658c53dSPaolo Bonzini error_setg_errno(errp, errno, 897ad9579aaSDaniel P. Berrange "Failed to make a temporary socket %s", pathbuf); 898b658c53dSPaolo Bonzini goto err; 899b658c53dSPaolo Bonzini } 900b658c53dSPaolo Bonzini close(fd); 901baacf047SPaolo Bonzini } 902baacf047SPaolo Bonzini 903ad9579aaSDaniel P. Berrange if (unlink(path) < 0 && errno != ENOENT) { 9040ef705a2SCole Robinson error_setg_errno(errp, errno, 905ad9579aaSDaniel P. Berrange "Failed to unlink socket %s", path); 9060ef705a2SCole Robinson goto err; 9070ef705a2SCole Robinson } 908ad9579aaSDaniel P. Berrange 909ad9579aaSDaniel P. Berrange memset(&un, 0, sizeof(un)); 910ad9579aaSDaniel P. Berrange un.sun_family = AF_UNIX; 9112d2023c3SDaniel P. Berrangé memcpy(un.sun_path, path, pathlen); 912ad9579aaSDaniel P. Berrange 913baacf047SPaolo Bonzini if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { 91456382bd5SDaniel P. Berrange error_setg_errno(errp, errno, "Failed to bind socket to %s", path); 915baacf047SPaolo Bonzini goto err; 916baacf047SPaolo Bonzini } 917baacf047SPaolo Bonzini if (listen(sock, 1) < 0) { 918235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to listen on socket"); 919baacf047SPaolo Bonzini goto err; 920baacf047SPaolo Bonzini } 921baacf047SPaolo Bonzini 922ad9579aaSDaniel P. Berrange g_free(pathbuf); 923baacf047SPaolo Bonzini return sock; 924baacf047SPaolo Bonzini 925baacf047SPaolo Bonzini err: 926ad9579aaSDaniel P. Berrange g_free(pathbuf); 927baacf047SPaolo Bonzini closesocket(sock); 928baacf047SPaolo Bonzini return -1; 929baacf047SPaolo Bonzini } 930baacf047SPaolo Bonzini 931b2587932SCao jin static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) 932baacf047SPaolo Bonzini { 933baacf047SPaolo Bonzini struct sockaddr_un un; 934baacf047SPaolo Bonzini int sock, rc; 9352d2023c3SDaniel P. Berrangé size_t pathlen; 936baacf047SPaolo Bonzini 9372942e420SDaniel P. Berrange if (saddr->path == NULL) { 938312fd5f2SMarkus Armbruster error_setg(errp, "unix connect: no path specified"); 939baacf047SPaolo Bonzini return -1; 940baacf047SPaolo Bonzini } 941baacf047SPaolo Bonzini 942baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 943baacf047SPaolo Bonzini if (sock < 0) { 944235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 945baacf047SPaolo Bonzini return -1; 946baacf047SPaolo Bonzini } 947baacf047SPaolo Bonzini 9482d2023c3SDaniel P. Berrangé pathlen = strlen(saddr->path); 9492d2023c3SDaniel P. Berrangé if (pathlen > sizeof(un.sun_path)) { 950ad9579aaSDaniel P. Berrange error_setg(errp, "UNIX socket path '%s' is too long", saddr->path); 951ad9579aaSDaniel P. Berrange error_append_hint(errp, "Path must be less than %zu bytes\n", 952ad9579aaSDaniel P. Berrange sizeof(un.sun_path)); 953ad9579aaSDaniel P. Berrange goto err; 954ad9579aaSDaniel P. Berrange } 955ad9579aaSDaniel P. Berrange 956baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 957baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 9582d2023c3SDaniel P. Berrangé memcpy(un.sun_path, saddr->path, pathlen); 959baacf047SPaolo Bonzini 960baacf047SPaolo Bonzini /* connect to peer */ 961baacf047SPaolo Bonzini do { 962baacf047SPaolo Bonzini rc = 0; 963baacf047SPaolo Bonzini if (connect(sock, (struct sockaddr *) &un, sizeof(un)) < 0) { 964b16a44e1SDaniel P. Berrange rc = -errno; 965baacf047SPaolo Bonzini } 966baacf047SPaolo Bonzini } while (rc == -EINTR); 967baacf047SPaolo Bonzini 968baacf047SPaolo Bonzini if (rc < 0) { 969ad9579aaSDaniel P. Berrange error_setg_errno(errp, -rc, "Failed to connect socket %s", 970ad9579aaSDaniel P. Berrange saddr->path); 971ad9579aaSDaniel P. Berrange goto err; 972baacf047SPaolo Bonzini } 973baacf047SPaolo Bonzini 974baacf047SPaolo Bonzini return sock; 975ad9579aaSDaniel P. Berrange 976ad9579aaSDaniel P. Berrange err: 977ad9579aaSDaniel P. Berrange close(sock); 978ad9579aaSDaniel P. Berrange return -1; 979baacf047SPaolo Bonzini } 980baacf047SPaolo Bonzini 981baacf047SPaolo Bonzini #else 982baacf047SPaolo Bonzini 9831856835dSDaniel P. Berrange static int unix_listen_saddr(UnixSocketAddress *saddr, 9841856835dSDaniel P. Berrange Error **errp) 985baacf047SPaolo Bonzini { 986baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 987baacf047SPaolo Bonzini errno = ENOTSUP; 988baacf047SPaolo Bonzini return -1; 989baacf047SPaolo Bonzini } 990baacf047SPaolo Bonzini 991b2587932SCao jin static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) 992baacf047SPaolo Bonzini { 993baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 994baacf047SPaolo Bonzini errno = ENOTSUP; 995baacf047SPaolo Bonzini return -1; 996baacf047SPaolo Bonzini } 997baacf047SPaolo Bonzini #endif 998baacf047SPaolo Bonzini 999baacf047SPaolo Bonzini /* compatibility wrapper */ 100062473511SDaniel P. Berrange int unix_listen(const char *str, Error **errp) 1001baacf047SPaolo Bonzini { 10021856835dSDaniel P. Berrange UnixSocketAddress *saddr; 1003caf88d74SMarc-André Lureau int sock; 1004baacf047SPaolo Bonzini 10051856835dSDaniel P. Berrange saddr = g_new0(UnixSocketAddress, 1); 10061856835dSDaniel P. Berrange saddr->path = g_strdup(str); 100762473511SDaniel P. Berrange sock = unix_listen_saddr(saddr, errp); 10081856835dSDaniel P. Berrange qapi_free_UnixSocketAddress(saddr); 1009baacf047SPaolo Bonzini return sock; 1010baacf047SPaolo Bonzini } 1011baacf047SPaolo Bonzini 1012baacf047SPaolo Bonzini int unix_connect(const char *path, Error **errp) 1013baacf047SPaolo Bonzini { 10142942e420SDaniel P. Berrange UnixSocketAddress *saddr; 1015baacf047SPaolo Bonzini int sock; 1016baacf047SPaolo Bonzini 10172942e420SDaniel P. Berrange saddr = g_new0(UnixSocketAddress, 1); 10182942e420SDaniel P. Berrange saddr->path = g_strdup(path); 1019b2587932SCao jin sock = unix_connect_saddr(saddr, errp); 10202942e420SDaniel P. Berrange qapi_free_UnixSocketAddress(saddr); 1021baacf047SPaolo Bonzini return sock; 1022baacf047SPaolo Bonzini } 1023baacf047SPaolo Bonzini 1024baacf047SPaolo Bonzini 1025bd269ebcSMarkus Armbruster SocketAddress *socket_parse(const char *str, Error **errp) 1026baacf047SPaolo Bonzini { 1027bd269ebcSMarkus Armbruster SocketAddress *addr; 1028baacf047SPaolo Bonzini 1029bd269ebcSMarkus Armbruster addr = g_new0(SocketAddress, 1); 1030baacf047SPaolo Bonzini if (strstart(str, "unix:", NULL)) { 1031baacf047SPaolo Bonzini if (str[5] == '\0') { 1032312fd5f2SMarkus Armbruster error_setg(errp, "invalid Unix socket address"); 1033baacf047SPaolo Bonzini goto fail; 1034baacf047SPaolo Bonzini } else { 1035bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_UNIX; 1036bd269ebcSMarkus Armbruster addr->u.q_unix.path = g_strdup(str + 5); 1037baacf047SPaolo Bonzini } 1038baacf047SPaolo Bonzini } else if (strstart(str, "fd:", NULL)) { 1039baacf047SPaolo Bonzini if (str[3] == '\0') { 1040312fd5f2SMarkus Armbruster error_setg(errp, "invalid file descriptor address"); 1041baacf047SPaolo Bonzini goto fail; 1042baacf047SPaolo Bonzini } else { 1043bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_FD; 1044bd269ebcSMarkus Armbruster addr->u.fd.str = g_strdup(str + 3); 1045baacf047SPaolo Bonzini } 10466a02c806SStefan Hajnoczi } else if (strstart(str, "vsock:", NULL)) { 1047bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_VSOCK; 1048bd269ebcSMarkus Armbruster if (vsock_parse(&addr->u.vsock, str + strlen("vsock:"), errp)) { 10496a02c806SStefan Hajnoczi goto fail; 10506a02c806SStefan Hajnoczi } 1051baacf047SPaolo Bonzini } else { 1052bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_INET; 1053bd269ebcSMarkus Armbruster if (inet_parse(&addr->u.inet, str, errp)) { 1054baacf047SPaolo Bonzini goto fail; 1055baacf047SPaolo Bonzini } 1056baacf047SPaolo Bonzini } 1057baacf047SPaolo Bonzini return addr; 1058baacf047SPaolo Bonzini 1059baacf047SPaolo Bonzini fail: 1060bd269ebcSMarkus Armbruster qapi_free_SocketAddress(addr); 1061baacf047SPaolo Bonzini return NULL; 1062baacf047SPaolo Bonzini } 1063baacf047SPaolo Bonzini 106430bdb3c5SDaniel P. Berrange static int socket_get_fd(const char *fdstr, Error **errp) 106530bdb3c5SDaniel P. Berrange { 10661723d6b1SDaniel P. Berrange int fd; 10671723d6b1SDaniel P. Berrange if (cur_mon) { 10681723d6b1SDaniel P. Berrange fd = monitor_get_fd(cur_mon, fdstr, errp); 106930bdb3c5SDaniel P. Berrange if (fd < 0) { 107030bdb3c5SDaniel P. Berrange return -1; 107130bdb3c5SDaniel P. Berrange } 10721723d6b1SDaniel P. Berrange } else { 10731723d6b1SDaniel P. Berrange if (qemu_strtoi(fdstr, NULL, 10, &fd) < 0) { 10741723d6b1SDaniel P. Berrange error_setg_errno(errp, errno, 10751723d6b1SDaniel P. Berrange "Unable to parse FD number %s", 10761723d6b1SDaniel P. Berrange fdstr); 10771723d6b1SDaniel P. Berrange return -1; 10781723d6b1SDaniel P. Berrange } 10791723d6b1SDaniel P. Berrange } 108030bdb3c5SDaniel P. Berrange if (!fd_is_socket(fd)) { 108130bdb3c5SDaniel P. Berrange error_setg(errp, "File descriptor '%s' is not a socket", fdstr); 108230bdb3c5SDaniel P. Berrange close(fd); 108330bdb3c5SDaniel P. Berrange return -1; 108430bdb3c5SDaniel P. Berrange } 108530bdb3c5SDaniel P. Berrange return fd; 108630bdb3c5SDaniel P. Berrange } 108730bdb3c5SDaniel P. Berrange 1088b2587932SCao jin int socket_connect(SocketAddress *addr, Error **errp) 1089baacf047SPaolo Bonzini { 1090baacf047SPaolo Bonzini int fd; 1091baacf047SPaolo Bonzini 10922d32addaSEric Blake switch (addr->type) { 1093bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_INET: 1094b2587932SCao jin fd = inet_connect_saddr(&addr->u.inet, errp); 1095baacf047SPaolo Bonzini break; 1096baacf047SPaolo Bonzini 1097bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_UNIX: 1098b2587932SCao jin fd = unix_connect_saddr(&addr->u.q_unix, errp); 1099baacf047SPaolo Bonzini break; 1100baacf047SPaolo Bonzini 1101bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_FD: 110230bdb3c5SDaniel P. Berrange fd = socket_get_fd(addr->u.fd.str, errp); 1103baacf047SPaolo Bonzini break; 1104baacf047SPaolo Bonzini 1105bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_VSOCK: 1106b2587932SCao jin fd = vsock_connect_saddr(&addr->u.vsock, errp); 11076a02c806SStefan Hajnoczi break; 11086a02c806SStefan Hajnoczi 1109baacf047SPaolo Bonzini default: 1110baacf047SPaolo Bonzini abort(); 1111baacf047SPaolo Bonzini } 1112baacf047SPaolo Bonzini return fd; 1113baacf047SPaolo Bonzini } 1114baacf047SPaolo Bonzini 1115bd269ebcSMarkus Armbruster int socket_listen(SocketAddress *addr, Error **errp) 1116baacf047SPaolo Bonzini { 1117baacf047SPaolo Bonzini int fd; 1118baacf047SPaolo Bonzini 11192d32addaSEric Blake switch (addr->type) { 1120bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_INET: 112162473511SDaniel P. Berrange fd = inet_listen_saddr(&addr->u.inet, 0, errp); 1122baacf047SPaolo Bonzini break; 1123baacf047SPaolo Bonzini 1124bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_UNIX: 112562473511SDaniel P. Berrange fd = unix_listen_saddr(&addr->u.q_unix, errp); 1126baacf047SPaolo Bonzini break; 1127baacf047SPaolo Bonzini 1128bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_FD: 112930bdb3c5SDaniel P. Berrange fd = socket_get_fd(addr->u.fd.str, errp); 1130baacf047SPaolo Bonzini break; 1131baacf047SPaolo Bonzini 1132bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_VSOCK: 1133bd269ebcSMarkus Armbruster fd = vsock_listen_saddr(&addr->u.vsock, errp); 11346a02c806SStefan Hajnoczi break; 11356a02c806SStefan Hajnoczi 1136baacf047SPaolo Bonzini default: 1137baacf047SPaolo Bonzini abort(); 1138baacf047SPaolo Bonzini } 1139baacf047SPaolo Bonzini return fd; 1140baacf047SPaolo Bonzini } 1141baacf047SPaolo Bonzini 114274b6ce43SMarc-André Lureau void socket_listen_cleanup(int fd, Error **errp) 114374b6ce43SMarc-André Lureau { 1144bd269ebcSMarkus Armbruster SocketAddress *addr; 114574b6ce43SMarc-André Lureau 114674b6ce43SMarc-André Lureau addr = socket_local_address(fd, errp); 11472d7ad7c0SDaniel P. Berrange if (!addr) { 11482d7ad7c0SDaniel P. Berrange return; 11492d7ad7c0SDaniel P. Berrange } 115074b6ce43SMarc-André Lureau 1151bd269ebcSMarkus Armbruster if (addr->type == SOCKET_ADDRESS_TYPE_UNIX 1152bd269ebcSMarkus Armbruster && addr->u.q_unix.path) { 1153bd269ebcSMarkus Armbruster if (unlink(addr->u.q_unix.path) < 0 && errno != ENOENT) { 115474b6ce43SMarc-André Lureau error_setg_errno(errp, errno, 115574b6ce43SMarc-André Lureau "Failed to unlink socket %s", 1156bd269ebcSMarkus Armbruster addr->u.q_unix.path); 115774b6ce43SMarc-André Lureau } 115874b6ce43SMarc-André Lureau } 115974b6ce43SMarc-André Lureau 1160bd269ebcSMarkus Armbruster qapi_free_SocketAddress(addr); 116174b6ce43SMarc-André Lureau } 116274b6ce43SMarc-André Lureau 1163bd269ebcSMarkus Armbruster int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) 11643ecc059dSGerd Hoffmann { 11653ecc059dSGerd Hoffmann int fd; 11663ecc059dSGerd Hoffmann 1167ca0b64e5SMarkus Armbruster /* 1168bd269ebcSMarkus Armbruster * TODO SOCKET_ADDRESS_TYPE_FD when fd is AF_INET or AF_INET6 1169ca0b64e5SMarkus Armbruster * (although other address families can do SOCK_DGRAM, too) 1170ca0b64e5SMarkus Armbruster */ 11712d32addaSEric Blake switch (remote->type) { 1172bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_INET: 1173bd269ebcSMarkus Armbruster fd = inet_dgram_saddr(&remote->u.inet, 1174bd269ebcSMarkus Armbruster local ? &local->u.inet : NULL, errp); 11753ecc059dSGerd Hoffmann break; 11763ecc059dSGerd Hoffmann 11773ecc059dSGerd Hoffmann default: 11783ecc059dSGerd Hoffmann error_setg(errp, "socket type unsupported for datagram"); 11797a5b6af1SGerd Hoffmann fd = -1; 11803ecc059dSGerd Hoffmann } 11813ecc059dSGerd Hoffmann return fd; 11823ecc059dSGerd Hoffmann } 118317c55decSDaniel P. Berrange 118417c55decSDaniel P. Berrange 1185bd269ebcSMarkus Armbruster static SocketAddress * 118617c55decSDaniel P. Berrange socket_sockaddr_to_address_inet(struct sockaddr_storage *sa, 118717c55decSDaniel P. Berrange socklen_t salen, 118817c55decSDaniel P. Berrange Error **errp) 118917c55decSDaniel P. Berrange { 119017c55decSDaniel P. Berrange char host[NI_MAXHOST]; 119117c55decSDaniel P. Berrange char serv[NI_MAXSERV]; 1192bd269ebcSMarkus Armbruster SocketAddress *addr; 11930399293eSEric Blake InetSocketAddress *inet; 119417c55decSDaniel P. Berrange int ret; 119517c55decSDaniel P. Berrange 119617c55decSDaniel P. Berrange ret = getnameinfo((struct sockaddr *)sa, salen, 119717c55decSDaniel P. Berrange host, sizeof(host), 119817c55decSDaniel P. Berrange serv, sizeof(serv), 119917c55decSDaniel P. Berrange NI_NUMERICHOST | NI_NUMERICSERV); 120017c55decSDaniel P. Berrange if (ret != 0) { 120117c55decSDaniel P. Berrange error_setg(errp, "Cannot format numeric socket address: %s", 120217c55decSDaniel P. Berrange gai_strerror(ret)); 120317c55decSDaniel P. Berrange return NULL; 120417c55decSDaniel P. Berrange } 120517c55decSDaniel P. Berrange 1206bd269ebcSMarkus Armbruster addr = g_new0(SocketAddress, 1); 1207bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_INET; 1208bd269ebcSMarkus Armbruster inet = &addr->u.inet; 12090399293eSEric Blake inet->host = g_strdup(host); 12100399293eSEric Blake inet->port = g_strdup(serv); 121117c55decSDaniel P. Berrange if (sa->ss_family == AF_INET) { 12120399293eSEric Blake inet->has_ipv4 = inet->ipv4 = true; 121317c55decSDaniel P. Berrange } else { 12140399293eSEric Blake inet->has_ipv6 = inet->ipv6 = true; 121517c55decSDaniel P. Berrange } 121617c55decSDaniel P. Berrange 121717c55decSDaniel P. Berrange return addr; 121817c55decSDaniel P. Berrange } 121917c55decSDaniel P. Berrange 122017c55decSDaniel P. Berrange 122117c55decSDaniel P. Berrange #ifndef WIN32 1222bd269ebcSMarkus Armbruster static SocketAddress * 122317c55decSDaniel P. Berrange socket_sockaddr_to_address_unix(struct sockaddr_storage *sa, 122417c55decSDaniel P. Berrange socklen_t salen, 122517c55decSDaniel P. Berrange Error **errp) 122617c55decSDaniel P. Berrange { 1227bd269ebcSMarkus Armbruster SocketAddress *addr; 122817c55decSDaniel P. Berrange struct sockaddr_un *su = (struct sockaddr_un *)sa; 122917c55decSDaniel P. Berrange 1230bd269ebcSMarkus Armbruster addr = g_new0(SocketAddress, 1); 1231bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_UNIX; 123217c55decSDaniel P. Berrange if (su->sun_path[0]) { 1233bd269ebcSMarkus Armbruster addr->u.q_unix.path = g_strndup(su->sun_path, sizeof(su->sun_path)); 123417c55decSDaniel P. Berrange } 123517c55decSDaniel P. Berrange 123617c55decSDaniel P. Berrange return addr; 123717c55decSDaniel P. Berrange } 123817c55decSDaniel P. Berrange #endif /* WIN32 */ 123917c55decSDaniel P. Berrange 12406a02c806SStefan Hajnoczi #ifdef CONFIG_AF_VSOCK 1241bd269ebcSMarkus Armbruster static SocketAddress * 12426a02c806SStefan Hajnoczi socket_sockaddr_to_address_vsock(struct sockaddr_storage *sa, 12436a02c806SStefan Hajnoczi socklen_t salen, 12446a02c806SStefan Hajnoczi Error **errp) 12456a02c806SStefan Hajnoczi { 1246bd269ebcSMarkus Armbruster SocketAddress *addr; 12476a02c806SStefan Hajnoczi VsockSocketAddress *vaddr; 12486a02c806SStefan Hajnoczi struct sockaddr_vm *svm = (struct sockaddr_vm *)sa; 12496a02c806SStefan Hajnoczi 1250bd269ebcSMarkus Armbruster addr = g_new0(SocketAddress, 1); 1251bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_VSOCK; 1252bd269ebcSMarkus Armbruster vaddr = &addr->u.vsock; 12536a02c806SStefan Hajnoczi vaddr->cid = g_strdup_printf("%u", svm->svm_cid); 12546a02c806SStefan Hajnoczi vaddr->port = g_strdup_printf("%u", svm->svm_port); 12556a02c806SStefan Hajnoczi 12566a02c806SStefan Hajnoczi return addr; 12576a02c806SStefan Hajnoczi } 12586a02c806SStefan Hajnoczi #endif /* CONFIG_AF_VSOCK */ 12596a02c806SStefan Hajnoczi 1260bd269ebcSMarkus Armbruster SocketAddress * 126117c55decSDaniel P. Berrange socket_sockaddr_to_address(struct sockaddr_storage *sa, 126217c55decSDaniel P. Berrange socklen_t salen, 126317c55decSDaniel P. Berrange Error **errp) 126417c55decSDaniel P. Berrange { 126517c55decSDaniel P. Berrange switch (sa->ss_family) { 126617c55decSDaniel P. Berrange case AF_INET: 126717c55decSDaniel P. Berrange case AF_INET6: 126817c55decSDaniel P. Berrange return socket_sockaddr_to_address_inet(sa, salen, errp); 126917c55decSDaniel P. Berrange 127017c55decSDaniel P. Berrange #ifndef WIN32 127117c55decSDaniel P. Berrange case AF_UNIX: 127217c55decSDaniel P. Berrange return socket_sockaddr_to_address_unix(sa, salen, errp); 127317c55decSDaniel P. Berrange #endif /* WIN32 */ 127417c55decSDaniel P. Berrange 12756a02c806SStefan Hajnoczi #ifdef CONFIG_AF_VSOCK 12766a02c806SStefan Hajnoczi case AF_VSOCK: 12776a02c806SStefan Hajnoczi return socket_sockaddr_to_address_vsock(sa, salen, errp); 12786a02c806SStefan Hajnoczi #endif 12796a02c806SStefan Hajnoczi 128017c55decSDaniel P. Berrange default: 128117c55decSDaniel P. Berrange error_setg(errp, "socket family %d unsupported", 128217c55decSDaniel P. Berrange sa->ss_family); 128317c55decSDaniel P. Berrange return NULL; 128417c55decSDaniel P. Berrange } 128517c55decSDaniel P. Berrange return 0; 128617c55decSDaniel P. Berrange } 128717c55decSDaniel P. Berrange 128817c55decSDaniel P. Berrange 1289bd269ebcSMarkus Armbruster SocketAddress *socket_local_address(int fd, Error **errp) 129017c55decSDaniel P. Berrange { 129117c55decSDaniel P. Berrange struct sockaddr_storage ss; 129217c55decSDaniel P. Berrange socklen_t sslen = sizeof(ss); 129317c55decSDaniel P. Berrange 129417c55decSDaniel P. Berrange if (getsockname(fd, (struct sockaddr *)&ss, &sslen) < 0) { 1295b16a44e1SDaniel P. Berrange error_setg_errno(errp, errno, "%s", 129617c55decSDaniel P. Berrange "Unable to query local socket address"); 129717c55decSDaniel P. Berrange return NULL; 129817c55decSDaniel P. Berrange } 129917c55decSDaniel P. Berrange 130017c55decSDaniel P. Berrange return socket_sockaddr_to_address(&ss, sslen, errp); 130117c55decSDaniel P. Berrange } 130217c55decSDaniel P. Berrange 130317c55decSDaniel P. Berrange 1304bd269ebcSMarkus Armbruster SocketAddress *socket_remote_address(int fd, Error **errp) 130517c55decSDaniel P. Berrange { 130617c55decSDaniel P. Berrange struct sockaddr_storage ss; 130717c55decSDaniel P. Berrange socklen_t sslen = sizeof(ss); 130817c55decSDaniel P. Berrange 130917c55decSDaniel P. Berrange if (getpeername(fd, (struct sockaddr *)&ss, &sslen) < 0) { 1310b16a44e1SDaniel P. Berrange error_setg_errno(errp, errno, "%s", 131117c55decSDaniel P. Berrange "Unable to query remote socket address"); 131217c55decSDaniel P. Berrange return NULL; 131317c55decSDaniel P. Berrange } 131417c55decSDaniel P. Berrange 131517c55decSDaniel P. Berrange return socket_sockaddr_to_address(&ss, sslen, errp); 131617c55decSDaniel P. Berrange } 13172a8e21c7SDaniel P. Berrange 1318216411b8SMarkus Armbruster 1319bd269ebcSMarkus Armbruster SocketAddress *socket_address_flatten(SocketAddressLegacy *addr_legacy) 1320bd269ebcSMarkus Armbruster { 1321fc0f0059SMarkus Armbruster SocketAddress *addr; 1322bd269ebcSMarkus Armbruster 1323bd269ebcSMarkus Armbruster if (!addr_legacy) { 1324bd269ebcSMarkus Armbruster return NULL; 1325bd269ebcSMarkus Armbruster } 1326bd269ebcSMarkus Armbruster 1327fc0f0059SMarkus Armbruster addr = g_new(SocketAddress, 1); 1328fc0f0059SMarkus Armbruster 1329bd269ebcSMarkus Armbruster switch (addr_legacy->type) { 1330bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_LEGACY_KIND_INET: 1331bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_INET; 1332bd269ebcSMarkus Armbruster QAPI_CLONE_MEMBERS(InetSocketAddress, &addr->u.inet, 1333bd269ebcSMarkus Armbruster addr_legacy->u.inet.data); 1334bd269ebcSMarkus Armbruster break; 1335bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_LEGACY_KIND_UNIX: 1336bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_UNIX; 1337bd269ebcSMarkus Armbruster QAPI_CLONE_MEMBERS(UnixSocketAddress, &addr->u.q_unix, 1338bd269ebcSMarkus Armbruster addr_legacy->u.q_unix.data); 1339bd269ebcSMarkus Armbruster break; 1340bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_LEGACY_KIND_VSOCK: 1341bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_VSOCK; 1342bd269ebcSMarkus Armbruster QAPI_CLONE_MEMBERS(VsockSocketAddress, &addr->u.vsock, 1343bd269ebcSMarkus Armbruster addr_legacy->u.vsock.data); 1344bd269ebcSMarkus Armbruster break; 1345bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_LEGACY_KIND_FD: 1346bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_FD; 1347bd269ebcSMarkus Armbruster QAPI_CLONE_MEMBERS(String, &addr->u.fd, addr_legacy->u.fd.data); 1348bd269ebcSMarkus Armbruster break; 1349bd269ebcSMarkus Armbruster default: 1350bd269ebcSMarkus Armbruster abort(); 1351bd269ebcSMarkus Armbruster } 1352bd269ebcSMarkus Armbruster 1353bd269ebcSMarkus Armbruster return addr; 1354bd269ebcSMarkus Armbruster } 1355