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" 34e5b6353cSJuan Quintela #include "trace.h" 35baacf047SPaolo Bonzini 36baacf047SPaolo Bonzini #ifndef AI_ADDRCONFIG 37baacf047SPaolo Bonzini # define AI_ADDRCONFIG 0 38baacf047SPaolo Bonzini #endif 39340849a9SDaniel P. Berrange 403de3d698SWolfgang Bumiller #ifndef AI_V4MAPPED 413de3d698SWolfgang Bumiller # define AI_V4MAPPED 0 423de3d698SWolfgang Bumiller #endif 43baacf047SPaolo Bonzini 446979a813SDaniel P. Berrange #ifndef AI_NUMERICSERV 456979a813SDaniel P. Berrange # define AI_NUMERICSERV 0 466979a813SDaniel P. Berrange #endif 476979a813SDaniel P. Berrange 48baacf047SPaolo Bonzini 49baacf047SPaolo Bonzini static int inet_getport(struct addrinfo *e) 50baacf047SPaolo Bonzini { 51baacf047SPaolo Bonzini struct sockaddr_in *i4; 52baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 53baacf047SPaolo Bonzini 54baacf047SPaolo Bonzini switch (e->ai_family) { 55baacf047SPaolo Bonzini case PF_INET6: 56baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 57baacf047SPaolo Bonzini return ntohs(i6->sin6_port); 58baacf047SPaolo Bonzini case PF_INET: 59baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 60baacf047SPaolo Bonzini return ntohs(i4->sin_port); 61baacf047SPaolo Bonzini default: 62baacf047SPaolo Bonzini return 0; 63baacf047SPaolo Bonzini } 64baacf047SPaolo Bonzini } 65baacf047SPaolo Bonzini 66baacf047SPaolo Bonzini static void inet_setport(struct addrinfo *e, int port) 67baacf047SPaolo Bonzini { 68baacf047SPaolo Bonzini struct sockaddr_in *i4; 69baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 70baacf047SPaolo Bonzini 71baacf047SPaolo Bonzini switch (e->ai_family) { 72baacf047SPaolo Bonzini case PF_INET6: 73baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 74baacf047SPaolo Bonzini i6->sin6_port = htons(port); 75baacf047SPaolo Bonzini break; 76baacf047SPaolo Bonzini case PF_INET: 77baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 78baacf047SPaolo Bonzini i4->sin_port = htons(port); 79baacf047SPaolo Bonzini break; 80baacf047SPaolo Bonzini } 81baacf047SPaolo Bonzini } 82baacf047SPaolo Bonzini 83a589569fSWenchao Xia NetworkAddressFamily inet_netfamily(int family) 84a589569fSWenchao Xia { 85a589569fSWenchao Xia switch (family) { 86a589569fSWenchao Xia case PF_INET6: return NETWORK_ADDRESS_FAMILY_IPV6; 87a589569fSWenchao Xia case PF_INET: return NETWORK_ADDRESS_FAMILY_IPV4; 88a589569fSWenchao Xia case PF_UNIX: return NETWORK_ADDRESS_FAMILY_UNIX; 896a02c806SStefan Hajnoczi #ifdef CONFIG_AF_VSOCK 906a02c806SStefan Hajnoczi case PF_VSOCK: return NETWORK_ADDRESS_FAMILY_VSOCK; 916a02c806SStefan Hajnoczi #endif /* CONFIG_AF_VSOCK */ 92a589569fSWenchao Xia } 93a589569fSWenchao Xia return NETWORK_ADDRESS_FAMILY_UNKNOWN; 94a589569fSWenchao Xia } 95a589569fSWenchao Xia 9658dc31f1SDaniel P. Berrange bool fd_is_socket(int fd) 9758dc31f1SDaniel P. Berrange { 9858dc31f1SDaniel P. Berrange int optval; 9958dc31f1SDaniel P. Berrange socklen_t optlen = sizeof(optval); 10058dc31f1SDaniel P. Berrange return !qemu_getsockopt(fd, SOL_SOCKET, SO_TYPE, &optval, &optlen); 10158dc31f1SDaniel P. Berrange } 10258dc31f1SDaniel P. Berrange 10358dc31f1SDaniel P. Berrange 1041856835dSDaniel P. Berrange /* 1051856835dSDaniel P. Berrange * Matrix we're trying to apply 1061856835dSDaniel P. Berrange * 1071856835dSDaniel P. Berrange * ipv4 ipv6 family 1081856835dSDaniel P. Berrange * - - PF_UNSPEC 1091856835dSDaniel P. Berrange * - f PF_INET 1101856835dSDaniel P. Berrange * - t PF_INET6 1111856835dSDaniel P. Berrange * f - PF_INET6 1121856835dSDaniel P. Berrange * f f <error> 1131856835dSDaniel P. Berrange * f t PF_INET6 1141856835dSDaniel P. Berrange * t - PF_INET 1151856835dSDaniel P. Berrange * t f PF_INET 11694bc0d19SDaniel P. Berrange * t t PF_INET6/PF_UNSPEC 1171856835dSDaniel P. Berrange * 118d43eda3dSWei Jiangang * NB, this matrix is only about getting the necessary results 1191856835dSDaniel P. Berrange * from getaddrinfo(). Some of the cases require further work 1201856835dSDaniel P. Berrange * after reading results from getaddrinfo in order to fully 12194bc0d19SDaniel P. Berrange * apply the logic the end user wants. 12294bc0d19SDaniel P. Berrange * 12394bc0d19SDaniel P. Berrange * In the first and last cases, we must set IPV6_V6ONLY=0 12494bc0d19SDaniel P. Berrange * when binding, to allow a single listener to potentially 12594bc0d19SDaniel P. Berrange * accept both IPv4+6 addresses. 1261856835dSDaniel P. Berrange */ 127c1b412f1SDaniel P. Berrange int inet_ai_family_from_address(InetSocketAddress *addr, 1281856835dSDaniel P. Berrange Error **errp) 1291856835dSDaniel P. Berrange { 1301856835dSDaniel P. Berrange if (addr->has_ipv6 && addr->has_ipv4 && 1311856835dSDaniel P. Berrange !addr->ipv6 && !addr->ipv4) { 1321856835dSDaniel P. Berrange error_setg(errp, "Cannot disable IPv4 and IPv6 at same time"); 1331856835dSDaniel P. Berrange return PF_UNSPEC; 1341856835dSDaniel P. Berrange } 13594bc0d19SDaniel P. Berrange if ((addr->has_ipv6 && addr->ipv6) && (addr->has_ipv4 && addr->ipv4)) { 13694bc0d19SDaniel P. Berrange /* 13794bc0d19SDaniel P. Berrange * Some backends can only do a single listener. In that case 13894bc0d19SDaniel P. Berrange * we want empty hostname to resolve to "::" and then use the 13994bc0d19SDaniel P. Berrange * flag IPV6_V6ONLY==0 to get both protocols on 1 socket. This 14094bc0d19SDaniel P. Berrange * doesn't work for addresses other than "", so they're just 14194bc0d19SDaniel P. Berrange * inevitably broken until multiple listeners can be used, 14294bc0d19SDaniel P. Berrange * and thus we honour getaddrinfo automatic protocol detection 14394bc0d19SDaniel P. Berrange * Once all backends do multi-listener, remove the PF_INET6 14494bc0d19SDaniel P. Berrange * branch entirely. 14594bc0d19SDaniel P. Berrange */ 14694bc0d19SDaniel P. Berrange if (!addr->host || g_str_equal(addr->host, "")) { 14794bc0d19SDaniel P. Berrange return PF_INET6; 14894bc0d19SDaniel P. Berrange } else { 14994bc0d19SDaniel P. Berrange return PF_UNSPEC; 15094bc0d19SDaniel P. Berrange } 15194bc0d19SDaniel P. Berrange } 1521856835dSDaniel P. Berrange if ((addr->has_ipv6 && addr->ipv6) || (addr->has_ipv4 && !addr->ipv4)) { 1531856835dSDaniel P. Berrange return PF_INET6; 1541856835dSDaniel P. Berrange } 1551856835dSDaniel P. Berrange if ((addr->has_ipv4 && addr->ipv4) || (addr->has_ipv6 && !addr->ipv6)) { 1561856835dSDaniel P. Berrange return PF_INET; 1571856835dSDaniel P. Berrange } 1581856835dSDaniel P. Berrange return PF_UNSPEC; 1591856835dSDaniel P. Berrange } 1601856835dSDaniel P. Berrange 16139f80521SKnut Omang static int create_fast_reuse_socket(struct addrinfo *e) 16239f80521SKnut Omang { 16339f80521SKnut Omang int slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); 16439f80521SKnut Omang if (slisten < 0) { 16539f80521SKnut Omang return -1; 16639f80521SKnut Omang } 16739f80521SKnut Omang socket_set_fast_reuse(slisten); 16839f80521SKnut Omang return slisten; 16939f80521SKnut Omang } 17039f80521SKnut Omang 17189382c3dSKnut Omang static int try_bind(int socket, InetSocketAddress *saddr, struct addrinfo *e) 17289382c3dSKnut Omang { 17389382c3dSKnut Omang #ifndef IPV6_V6ONLY 17489382c3dSKnut Omang return bind(socket, e->ai_addr, e->ai_addrlen); 17589382c3dSKnut Omang #else 17689382c3dSKnut Omang /* 17789382c3dSKnut Omang * Deals with first & last cases in matrix in comment 17889382c3dSKnut Omang * for inet_ai_family_from_address(). 17989382c3dSKnut Omang */ 18089382c3dSKnut Omang int v6only = 18189382c3dSKnut Omang ((!saddr->has_ipv4 && !saddr->has_ipv6) || 18289382c3dSKnut Omang (saddr->has_ipv4 && saddr->ipv4 && 18389382c3dSKnut Omang saddr->has_ipv6 && saddr->ipv6)) ? 0 : 1; 18489382c3dSKnut Omang int stat; 18589382c3dSKnut Omang 18689382c3dSKnut Omang rebind: 18789382c3dSKnut Omang if (e->ai_family == PF_INET6) { 18889382c3dSKnut Omang qemu_setsockopt(socket, IPPROTO_IPV6, IPV6_V6ONLY, &v6only, 18989382c3dSKnut Omang sizeof(v6only)); 19089382c3dSKnut Omang } 19189382c3dSKnut Omang 19289382c3dSKnut Omang stat = bind(socket, e->ai_addr, e->ai_addrlen); 19389382c3dSKnut Omang if (!stat) { 19489382c3dSKnut Omang return 0; 19589382c3dSKnut Omang } 19689382c3dSKnut Omang 19789382c3dSKnut Omang /* If we got EADDRINUSE from an IPv6 bind & v6only is unset, 19889382c3dSKnut Omang * it could be that the IPv4 port is already claimed, so retry 19989382c3dSKnut Omang * with v6only set 20089382c3dSKnut Omang */ 20189382c3dSKnut Omang if (e->ai_family == PF_INET6 && errno == EADDRINUSE && !v6only) { 20289382c3dSKnut Omang v6only = 1; 20389382c3dSKnut Omang goto rebind; 20489382c3dSKnut Omang } 20589382c3dSKnut Omang return stat; 20689382c3dSKnut Omang #endif 20789382c3dSKnut Omang } 20889382c3dSKnut Omang 2091856835dSDaniel P. Berrange static int inet_listen_saddr(InetSocketAddress *saddr, 2101856835dSDaniel P. Berrange int port_offset, 211e5b6353cSJuan Quintela int num, 2121856835dSDaniel P. Berrange Error **errp) 213baacf047SPaolo Bonzini { 214baacf047SPaolo Bonzini struct addrinfo ai,*res,*e; 215baacf047SPaolo Bonzini char port[33]; 216baacf047SPaolo Bonzini char uaddr[INET6_ADDRSTRLEN+1]; 217baacf047SPaolo Bonzini char uport[33]; 2189cf961bbSKnut Omang int rc, port_min, port_max, p; 21910a7b7e6SDaniel P. Berrange int slisten = -1; 2209cf961bbSKnut Omang int saved_errno = 0; 2219cf961bbSKnut Omang bool socket_created = false; 2221856835dSDaniel P. Berrange Error *err = NULL; 223baacf047SPaolo Bonzini 224aec21d31SVladimir Sementsov-Ogievskiy if (saddr->keep_alive) { 225aec21d31SVladimir Sementsov-Ogievskiy error_setg(errp, "keep-alive option is not supported for passive " 226aec21d31SVladimir Sementsov-Ogievskiy "sockets"); 227aec21d31SVladimir Sementsov-Ogievskiy return -1; 228aec21d31SVladimir Sementsov-Ogievskiy } 229aec21d31SVladimir Sementsov-Ogievskiy 230baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 2313de3d698SWolfgang Bumiller ai.ai_flags = AI_PASSIVE; 2326979a813SDaniel P. Berrange if (saddr->has_numeric && saddr->numeric) { 2336979a813SDaniel P. Berrange ai.ai_flags |= AI_NUMERICHOST | AI_NUMERICSERV; 2346979a813SDaniel P. Berrange } 2351856835dSDaniel P. Berrange ai.ai_family = inet_ai_family_from_address(saddr, &err); 236baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 237baacf047SPaolo Bonzini 2381856835dSDaniel P. Berrange if (err) { 2391856835dSDaniel P. Berrange error_propagate(errp, err); 2401856835dSDaniel P. Berrange return -1; 2411856835dSDaniel P. Berrange } 2421856835dSDaniel P. Berrange 2431856835dSDaniel P. Berrange if (saddr->host == NULL) { 2440983f5e6SDaniel P. Berrange error_setg(errp, "host not specified"); 245baacf047SPaolo Bonzini return -1; 246baacf047SPaolo Bonzini } 2471856835dSDaniel P. Berrange if (saddr->port != NULL) { 2481856835dSDaniel P. Berrange pstrcpy(port, sizeof(port), saddr->port); 2490983f5e6SDaniel P. Berrange } else { 2500983f5e6SDaniel P. Berrange port[0] = '\0'; 2510983f5e6SDaniel P. Berrange } 252baacf047SPaolo Bonzini 253baacf047SPaolo Bonzini /* lookup */ 2548bc89127SGerd Hoffmann if (port_offset) { 2558bc89127SGerd Hoffmann unsigned long long baseport; 2560983f5e6SDaniel P. Berrange if (strlen(port) == 0) { 2570983f5e6SDaniel P. Berrange error_setg(errp, "port not specified"); 2580983f5e6SDaniel P. Berrange return -1; 2590983f5e6SDaniel P. Berrange } 2608bc89127SGerd Hoffmann if (parse_uint_full(port, &baseport, 10) < 0) { 2618bc89127SGerd Hoffmann error_setg(errp, "can't convert to a number: %s", port); 2628bc89127SGerd Hoffmann return -1; 2638bc89127SGerd Hoffmann } 2648bc89127SGerd Hoffmann if (baseport > 65535 || 2658bc89127SGerd Hoffmann baseport + port_offset > 65535) { 2668bc89127SGerd Hoffmann error_setg(errp, "port %s out of range", port); 2678bc89127SGerd Hoffmann return -1; 2688bc89127SGerd Hoffmann } 2698bc89127SGerd Hoffmann snprintf(port, sizeof(port), "%d", (int)baseport + port_offset); 2708bc89127SGerd Hoffmann } 2711856835dSDaniel P. Berrange rc = getaddrinfo(strlen(saddr->host) ? saddr->host : NULL, 2720983f5e6SDaniel P. Berrange strlen(port) ? port : NULL, &ai, &res); 273baacf047SPaolo Bonzini if (rc != 0) { 2741856835dSDaniel P. Berrange error_setg(errp, "address resolution failed for %s:%s: %s", 2751856835dSDaniel P. Berrange saddr->host, port, gai_strerror(rc)); 276baacf047SPaolo Bonzini return -1; 277baacf047SPaolo Bonzini } 278baacf047SPaolo Bonzini 2799cf961bbSKnut Omang /* create socket + bind/listen */ 280baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 281baacf047SPaolo Bonzini getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, 282baacf047SPaolo Bonzini uaddr,INET6_ADDRSTRLEN,uport,32, 283baacf047SPaolo Bonzini NI_NUMERICHOST | NI_NUMERICSERV); 28439f80521SKnut Omang 285baacf047SPaolo Bonzini port_min = inet_getport(e); 2861856835dSDaniel P. Berrange port_max = saddr->has_to ? saddr->to + port_offset : port_min; 287baacf047SPaolo Bonzini for (p = port_min; p <= port_max; p++) { 288baacf047SPaolo Bonzini inet_setport(e, p); 28910a7b7e6SDaniel P. Berrange 29010a7b7e6SDaniel P. Berrange slisten = create_fast_reuse_socket(e); 29110a7b7e6SDaniel P. Berrange if (slisten < 0) { 29210a7b7e6SDaniel P. Berrange /* First time we expect we might fail to create the socket 29310a7b7e6SDaniel P. Berrange * eg if 'e' has AF_INET6 but ipv6 kmod is not loaded. 29410a7b7e6SDaniel P. Berrange * Later iterations should always succeed if first iteration 29510a7b7e6SDaniel P. Berrange * worked though, so treat that as fatal. 29610a7b7e6SDaniel P. Berrange */ 29710a7b7e6SDaniel P. Berrange if (p == port_min) { 2989cf961bbSKnut Omang continue; 2999cf961bbSKnut Omang } else { 30010a7b7e6SDaniel P. Berrange error_setg_errno(errp, errno, 30110a7b7e6SDaniel P. Berrange "Failed to recreate failed listening socket"); 3029cf961bbSKnut Omang goto listen_failed; 3039cf961bbSKnut Omang } 3049cf961bbSKnut Omang } 30510a7b7e6SDaniel P. Berrange socket_created = true; 30610a7b7e6SDaniel P. Berrange 30710a7b7e6SDaniel P. Berrange rc = try_bind(slisten, saddr, e); 30810a7b7e6SDaniel P. Berrange if (rc < 0) { 30910a7b7e6SDaniel P. Berrange if (errno != EADDRINUSE) { 31010a7b7e6SDaniel P. Berrange error_setg_errno(errp, errno, "Failed to bind socket"); 31110a7b7e6SDaniel P. Berrange goto listen_failed; 31210a7b7e6SDaniel P. Berrange } 31310a7b7e6SDaniel P. Berrange } else { 314e5b6353cSJuan Quintela if (!listen(slisten, num)) { 3159cf961bbSKnut Omang goto listen_ok; 3169cf961bbSKnut Omang } 3179cf961bbSKnut Omang if (errno != EADDRINUSE) { 3189cf961bbSKnut Omang error_setg_errno(errp, errno, "Failed to listen on socket"); 3199cf961bbSKnut Omang goto listen_failed; 3209cf961bbSKnut Omang } 32110a7b7e6SDaniel P. Berrange } 3229cf961bbSKnut Omang /* Someone else managed to bind to the same port and beat us 3239cf961bbSKnut Omang * to listen on it! Socket semantics does not allow us to 3249cf961bbSKnut Omang * recover from this situation, so we need to recreate the 3259cf961bbSKnut Omang * socket to allow bind attempts for subsequent ports: 3269cf961bbSKnut Omang */ 3279cf961bbSKnut Omang closesocket(slisten); 32810a7b7e6SDaniel P. Berrange slisten = -1; 329baacf047SPaolo Bonzini } 330baacf047SPaolo Bonzini } 3319cf961bbSKnut Omang error_setg_errno(errp, errno, 3329cf961bbSKnut Omang socket_created ? 3339cf961bbSKnut Omang "Failed to find an available port" : 3349cf961bbSKnut Omang "Failed to create a socket"); 3359cf961bbSKnut Omang listen_failed: 3369cf961bbSKnut Omang saved_errno = errno; 3379cf961bbSKnut Omang if (slisten >= 0) { 338baacf047SPaolo Bonzini closesocket(slisten); 339baacf047SPaolo Bonzini } 340baacf047SPaolo Bonzini freeaddrinfo(res); 3419cf961bbSKnut Omang errno = saved_errno; 342baacf047SPaolo Bonzini return -1; 343baacf047SPaolo Bonzini 3449cf961bbSKnut Omang listen_ok: 345baacf047SPaolo Bonzini freeaddrinfo(res); 346baacf047SPaolo Bonzini return slisten; 347baacf047SPaolo Bonzini } 348baacf047SPaolo Bonzini 349baacf047SPaolo Bonzini #ifdef _WIN32 350baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 351baacf047SPaolo Bonzini ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) 352baacf047SPaolo Bonzini #else 353baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 354baacf047SPaolo Bonzini ((rc) == -EINPROGRESS) 355baacf047SPaolo Bonzini #endif 356baacf047SPaolo Bonzini 357dfc00eb7SDaniel P. Berrangé static int inet_connect_addr(const InetSocketAddress *saddr, 358dfc00eb7SDaniel P. Berrangé struct addrinfo *addr, Error **errp) 359baacf047SPaolo Bonzini { 360baacf047SPaolo Bonzini int sock, rc; 361baacf047SPaolo Bonzini 362baacf047SPaolo Bonzini sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); 363baacf047SPaolo Bonzini if (sock < 0) { 364dfc00eb7SDaniel P. Berrangé error_setg_errno(errp, errno, "Failed to create socket family %d", 365dfc00eb7SDaniel P. Berrangé addr->ai_family); 366baacf047SPaolo Bonzini return -1; 367baacf047SPaolo Bonzini } 36804fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 369b2587932SCao jin 370baacf047SPaolo Bonzini /* connect to peer */ 371baacf047SPaolo Bonzini do { 372baacf047SPaolo Bonzini rc = 0; 373baacf047SPaolo Bonzini if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { 374b16a44e1SDaniel P. Berrange rc = -errno; 375baacf047SPaolo Bonzini } 376baacf047SPaolo Bonzini } while (rc == -EINTR); 377baacf047SPaolo Bonzini 378b2587932SCao jin if (rc < 0) { 379dfc00eb7SDaniel P. Berrangé error_setg_errno(errp, errno, "Failed to connect to '%s:%s'", 380dfc00eb7SDaniel P. Berrangé saddr->host, saddr->port); 381baacf047SPaolo Bonzini closesocket(sock); 382baacf047SPaolo Bonzini return -1; 383baacf047SPaolo Bonzini } 384b2587932SCao jin 385baacf047SPaolo Bonzini return sock; 386baacf047SPaolo Bonzini } 387baacf047SPaolo Bonzini 3882942e420SDaniel P. Berrange static struct addrinfo *inet_parse_connect_saddr(InetSocketAddress *saddr, 3892942e420SDaniel P. Berrange Error **errp) 390baacf047SPaolo Bonzini { 391baacf047SPaolo Bonzini struct addrinfo ai, *res; 392baacf047SPaolo Bonzini int rc; 3932942e420SDaniel P. Berrange Error *err = NULL; 394340849a9SDaniel P. Berrange static int useV4Mapped = 1; 395baacf047SPaolo Bonzini 396baacf047SPaolo Bonzini memset(&ai, 0, sizeof(ai)); 397baacf047SPaolo Bonzini 398340849a9SDaniel P. Berrange ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; 399d73415a3SStefan Hajnoczi if (qatomic_read(&useV4Mapped)) { 400340849a9SDaniel P. Berrange ai.ai_flags |= AI_V4MAPPED; 401340849a9SDaniel P. Berrange } 4022942e420SDaniel P. Berrange ai.ai_family = inet_ai_family_from_address(saddr, &err); 403baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 404baacf047SPaolo Bonzini 4052942e420SDaniel P. Berrange if (err) { 4062942e420SDaniel P. Berrange error_propagate(errp, err); 4072942e420SDaniel P. Berrange return NULL; 4082942e420SDaniel P. Berrange } 4092942e420SDaniel P. Berrange 4102942e420SDaniel P. Berrange if (saddr->host == NULL || saddr->port == NULL) { 411baacf047SPaolo Bonzini error_setg(errp, "host and/or port not specified"); 412baacf047SPaolo Bonzini return NULL; 413baacf047SPaolo Bonzini } 414baacf047SPaolo Bonzini 415baacf047SPaolo Bonzini /* lookup */ 4162942e420SDaniel P. Berrange rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); 417340849a9SDaniel P. Berrange 418340849a9SDaniel P. Berrange /* At least FreeBSD and OS-X 10.6 declare AI_V4MAPPED but 419340849a9SDaniel P. Berrange * then don't implement it in their getaddrinfo(). Detect 4208cc360b9Szhaolichang * this and retry without the flag since that's preferable 421340849a9SDaniel P. Berrange * to a fatal error 422340849a9SDaniel P. Berrange */ 423340849a9SDaniel P. Berrange if (rc == EAI_BADFLAGS && 424340849a9SDaniel P. Berrange (ai.ai_flags & AI_V4MAPPED)) { 425d73415a3SStefan Hajnoczi qatomic_set(&useV4Mapped, 0); 426340849a9SDaniel P. Berrange ai.ai_flags &= ~AI_V4MAPPED; 427340849a9SDaniel P. Berrange rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); 428340849a9SDaniel P. Berrange } 429baacf047SPaolo Bonzini if (rc != 0) { 4302942e420SDaniel P. Berrange error_setg(errp, "address resolution failed for %s:%s: %s", 4312942e420SDaniel P. Berrange saddr->host, saddr->port, gai_strerror(rc)); 432baacf047SPaolo Bonzini return NULL; 433baacf047SPaolo Bonzini } 434baacf047SPaolo Bonzini return res; 435baacf047SPaolo Bonzini } 436baacf047SPaolo Bonzini 437baacf047SPaolo Bonzini /** 438baacf047SPaolo Bonzini * Create a socket and connect it to an address. 439baacf047SPaolo Bonzini * 4402942e420SDaniel P. Berrange * @saddr: Inet socket address specification 441baacf047SPaolo Bonzini * @errp: set on error 442baacf047SPaolo Bonzini * 443baacf047SPaolo Bonzini * Returns: -1 on error, file descriptor on success. 444baacf047SPaolo Bonzini */ 445b2587932SCao jin int inet_connect_saddr(InetSocketAddress *saddr, Error **errp) 446baacf047SPaolo Bonzini { 4473f9286b7SMarkus Armbruster Error *local_err = NULL; 448baacf047SPaolo Bonzini struct addrinfo *res, *e; 449baacf047SPaolo Bonzini int sock = -1; 450baacf047SPaolo Bonzini 4512942e420SDaniel P. Berrange res = inet_parse_connect_saddr(saddr, errp); 452baacf047SPaolo Bonzini if (!res) { 453baacf047SPaolo Bonzini return -1; 454baacf047SPaolo Bonzini } 455baacf047SPaolo Bonzini 456baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 4573f9286b7SMarkus Armbruster error_free(local_err); 4583f9286b7SMarkus Armbruster local_err = NULL; 459dfc00eb7SDaniel P. Berrangé sock = inet_connect_addr(saddr, e, &local_err); 4603f9286b7SMarkus Armbruster if (sock >= 0) { 461baacf047SPaolo Bonzini break; 462baacf047SPaolo Bonzini } 463baacf047SPaolo Bonzini } 4643f9286b7SMarkus Armbruster 465da5e1169SVladimir Sementsov-Ogievskiy freeaddrinfo(res); 466da5e1169SVladimir Sementsov-Ogievskiy 4673f9286b7SMarkus Armbruster if (sock < 0) { 4683f9286b7SMarkus Armbruster error_propagate(errp, local_err); 469da5e1169SVladimir Sementsov-Ogievskiy return sock; 4703f9286b7SMarkus Armbruster } 471b2587932SCao jin 472aec21d31SVladimir Sementsov-Ogievskiy if (saddr->keep_alive) { 473aec21d31SVladimir Sementsov-Ogievskiy int val = 1; 474aec21d31SVladimir Sementsov-Ogievskiy int ret = qemu_setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, 475aec21d31SVladimir Sementsov-Ogievskiy &val, sizeof(val)); 476aec21d31SVladimir Sementsov-Ogievskiy 477aec21d31SVladimir Sementsov-Ogievskiy if (ret < 0) { 478aec21d31SVladimir Sementsov-Ogievskiy error_setg_errno(errp, errno, "Unable to set KEEPALIVE"); 479aec21d31SVladimir Sementsov-Ogievskiy close(sock); 480aec21d31SVladimir Sementsov-Ogievskiy return -1; 481aec21d31SVladimir Sementsov-Ogievskiy } 482aec21d31SVladimir Sementsov-Ogievskiy } 483aec21d31SVladimir Sementsov-Ogievskiy 484baacf047SPaolo Bonzini return sock; 485baacf047SPaolo Bonzini } 486baacf047SPaolo Bonzini 4878b39910eSDaniel P. Berrange static int inet_dgram_saddr(InetSocketAddress *sraddr, 4888b39910eSDaniel P. Berrange InetSocketAddress *sladdr, 4898b39910eSDaniel P. Berrange Error **errp) 490baacf047SPaolo Bonzini { 491baacf047SPaolo Bonzini struct addrinfo ai, *peer = NULL, *local = NULL; 492baacf047SPaolo Bonzini const char *addr; 493baacf047SPaolo Bonzini const char *port; 494baacf047SPaolo Bonzini int sock = -1, rc; 4958b39910eSDaniel P. Berrange Error *err = NULL; 496baacf047SPaolo Bonzini 497baacf047SPaolo Bonzini /* lookup peer addr */ 498baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 4993de3d698SWolfgang Bumiller ai.ai_flags = AI_CANONNAME | AI_V4MAPPED | AI_ADDRCONFIG; 5008b39910eSDaniel P. Berrange ai.ai_family = inet_ai_family_from_address(sraddr, &err); 501baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 502baacf047SPaolo Bonzini 5038b39910eSDaniel P. Berrange if (err) { 5048b39910eSDaniel P. Berrange error_propagate(errp, err); 50558c652c0SPaolo Bonzini goto err; 5068b39910eSDaniel P. Berrange } 5078b39910eSDaniel P. Berrange 5088b39910eSDaniel P. Berrange addr = sraddr->host; 5098b39910eSDaniel P. Berrange port = sraddr->port; 510baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 511baacf047SPaolo Bonzini addr = "localhost"; 512baacf047SPaolo Bonzini } 513baacf047SPaolo Bonzini if (port == NULL || strlen(port) == 0) { 514baacf047SPaolo Bonzini error_setg(errp, "remote port not specified"); 51558c652c0SPaolo Bonzini goto err; 516baacf047SPaolo Bonzini } 517baacf047SPaolo Bonzini 5189cd1883cSCao jin if ((rc = getaddrinfo(addr, port, &ai, &peer)) != 0) { 519baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 520baacf047SPaolo Bonzini gai_strerror(rc)); 52158c652c0SPaolo Bonzini goto err; 522baacf047SPaolo Bonzini } 523baacf047SPaolo Bonzini 524baacf047SPaolo Bonzini /* lookup local addr */ 525baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 526baacf047SPaolo Bonzini ai.ai_flags = AI_PASSIVE; 527baacf047SPaolo Bonzini ai.ai_family = peer->ai_family; 528baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 529baacf047SPaolo Bonzini 5308b39910eSDaniel P. Berrange if (sladdr) { 5318b39910eSDaniel P. Berrange addr = sladdr->host; 5328b39910eSDaniel P. Berrange port = sladdr->port; 533baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 534baacf047SPaolo Bonzini addr = NULL; 535baacf047SPaolo Bonzini } 5368b39910eSDaniel P. Berrange if (!port || strlen(port) == 0) { 537baacf047SPaolo Bonzini port = "0"; 5388b39910eSDaniel P. Berrange } 5398b39910eSDaniel P. Berrange } else { 5408b39910eSDaniel P. Berrange addr = NULL; 5418b39910eSDaniel P. Berrange port = "0"; 5428b39910eSDaniel P. Berrange } 543baacf047SPaolo Bonzini 5449cd1883cSCao jin if ((rc = getaddrinfo(addr, port, &ai, &local)) != 0) { 545baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 546baacf047SPaolo Bonzini gai_strerror(rc)); 547baacf047SPaolo Bonzini goto err; 548baacf047SPaolo Bonzini } 549baacf047SPaolo Bonzini 550baacf047SPaolo Bonzini /* create socket */ 551baacf047SPaolo Bonzini sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); 552baacf047SPaolo Bonzini if (sock < 0) { 553dfc00eb7SDaniel P. Berrangé error_setg_errno(errp, errno, "Failed to create socket family %d", 554dfc00eb7SDaniel P. Berrangé peer->ai_family); 555baacf047SPaolo Bonzini goto err; 556baacf047SPaolo Bonzini } 55704fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 558baacf047SPaolo Bonzini 559baacf047SPaolo Bonzini /* bind socket */ 560baacf047SPaolo Bonzini if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { 561235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to bind socket"); 562baacf047SPaolo Bonzini goto err; 563baacf047SPaolo Bonzini } 564baacf047SPaolo Bonzini 565baacf047SPaolo Bonzini /* connect to peer */ 566baacf047SPaolo Bonzini if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { 567dfc00eb7SDaniel P. Berrangé error_setg_errno(errp, errno, "Failed to connect to '%s:%s'", 568dfc00eb7SDaniel P. Berrangé addr, port); 569baacf047SPaolo Bonzini goto err; 570baacf047SPaolo Bonzini } 571baacf047SPaolo Bonzini 572baacf047SPaolo Bonzini freeaddrinfo(local); 573baacf047SPaolo Bonzini freeaddrinfo(peer); 574baacf047SPaolo Bonzini return sock; 575baacf047SPaolo Bonzini 576baacf047SPaolo Bonzini err: 57726015051SCao jin if (sock != -1) { 578baacf047SPaolo Bonzini closesocket(sock); 57926015051SCao jin } 58026015051SCao jin if (local) { 581baacf047SPaolo Bonzini freeaddrinfo(local); 58226015051SCao jin } 58326015051SCao jin if (peer) { 584baacf047SPaolo Bonzini freeaddrinfo(peer); 58526015051SCao jin } 58626015051SCao jin 587baacf047SPaolo Bonzini return -1; 588baacf047SPaolo Bonzini } 589baacf047SPaolo Bonzini 590baacf047SPaolo Bonzini /* compatibility wrapper */ 5913e32370aSDaniel P. Berrange static int inet_parse_flag(const char *flagname, const char *optstr, bool *val, 5923e32370aSDaniel P. Berrange Error **errp) 5933e32370aSDaniel P. Berrange { 5943e32370aSDaniel P. Berrange char *end; 5953e32370aSDaniel P. Berrange size_t len; 5963e32370aSDaniel P. Berrange 5973e32370aSDaniel P. Berrange end = strstr(optstr, ","); 5983e32370aSDaniel P. Berrange if (end) { 5993e32370aSDaniel P. Berrange if (end[1] == ',') { /* Reject 'ipv6=on,,foo' */ 6003e32370aSDaniel P. Berrange error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr); 6013e32370aSDaniel P. Berrange return -1; 6023e32370aSDaniel P. Berrange } 6033e32370aSDaniel P. Berrange len = end - optstr; 6043e32370aSDaniel P. Berrange } else { 6053e32370aSDaniel P. Berrange len = strlen(optstr); 6063e32370aSDaniel P. Berrange } 6073e32370aSDaniel P. Berrange if (len == 0 || (len == 3 && strncmp(optstr, "=on", len) == 0)) { 6083e32370aSDaniel P. Berrange *val = true; 6093e32370aSDaniel P. Berrange } else if (len == 4 && strncmp(optstr, "=off", len) == 0) { 6103e32370aSDaniel P. Berrange *val = false; 6113e32370aSDaniel P. Berrange } else { 6123e32370aSDaniel P. Berrange error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr); 6133e32370aSDaniel P. Berrange return -1; 6143e32370aSDaniel P. Berrange } 6153e32370aSDaniel P. Berrange return 0; 6163e32370aSDaniel P. Berrange } 6173e32370aSDaniel P. Berrange 6180785bd7aSMarkus Armbruster int inet_parse(InetSocketAddress *addr, const char *str, Error **errp) 619baacf047SPaolo Bonzini { 620baacf047SPaolo Bonzini const char *optstr, *h; 62155a10996SKevin Wolf char host[65]; 622baacf047SPaolo Bonzini char port[33]; 623baacf047SPaolo Bonzini int to; 624baacf047SPaolo Bonzini int pos; 6253e32370aSDaniel P. Berrange char *begin; 626baacf047SPaolo Bonzini 6270785bd7aSMarkus Armbruster memset(addr, 0, sizeof(*addr)); 628baacf047SPaolo Bonzini 629baacf047SPaolo Bonzini /* parse address */ 630baacf047SPaolo Bonzini if (str[0] == ':') { 631baacf047SPaolo Bonzini /* no host given */ 632baacf047SPaolo Bonzini host[0] = '\0'; 6339cd1883cSCao jin if (sscanf(str, ":%32[^,]%n", port, &pos) != 1) { 634baacf047SPaolo Bonzini error_setg(errp, "error parsing port in address '%s'", str); 6350785bd7aSMarkus Armbruster return -1; 636baacf047SPaolo Bonzini } 637baacf047SPaolo Bonzini } else if (str[0] == '[') { 638baacf047SPaolo Bonzini /* IPv6 addr */ 6399cd1883cSCao jin if (sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos) != 2) { 640baacf047SPaolo Bonzini error_setg(errp, "error parsing IPv6 address '%s'", str); 6410785bd7aSMarkus Armbruster return -1; 642baacf047SPaolo Bonzini } 643baacf047SPaolo Bonzini } else { 644391b7b97SJán Tomko /* hostname or IPv4 addr */ 6459cd1883cSCao jin if (sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos) != 2) { 646baacf047SPaolo Bonzini error_setg(errp, "error parsing address '%s'", str); 6470785bd7aSMarkus Armbruster return -1; 648baacf047SPaolo Bonzini } 649baacf047SPaolo Bonzini } 650baacf047SPaolo Bonzini 651baacf047SPaolo Bonzini addr->host = g_strdup(host); 652baacf047SPaolo Bonzini addr->port = g_strdup(port); 653baacf047SPaolo Bonzini 654baacf047SPaolo Bonzini /* parse options */ 655baacf047SPaolo Bonzini optstr = str + pos; 656baacf047SPaolo Bonzini h = strstr(optstr, ",to="); 657baacf047SPaolo Bonzini if (h) { 658baacf047SPaolo Bonzini h += 4; 659baacf047SPaolo Bonzini if (sscanf(h, "%d%n", &to, &pos) != 1 || 660baacf047SPaolo Bonzini (h[pos] != '\0' && h[pos] != ',')) { 661baacf047SPaolo Bonzini error_setg(errp, "error parsing to= argument"); 6620785bd7aSMarkus Armbruster return -1; 663baacf047SPaolo Bonzini } 664baacf047SPaolo Bonzini addr->has_to = true; 665baacf047SPaolo Bonzini addr->to = to; 666baacf047SPaolo Bonzini } 6673e32370aSDaniel P. Berrange begin = strstr(optstr, ",ipv4"); 6683e32370aSDaniel P. Berrange if (begin) { 6693e32370aSDaniel P. Berrange if (inet_parse_flag("ipv4", begin + 5, &addr->ipv4, errp) < 0) { 6703e32370aSDaniel P. Berrange return -1; 671baacf047SPaolo Bonzini } 6723e32370aSDaniel P. Berrange addr->has_ipv4 = true; 6733e32370aSDaniel P. Berrange } 6743e32370aSDaniel P. Berrange begin = strstr(optstr, ",ipv6"); 6753e32370aSDaniel P. Berrange if (begin) { 6763e32370aSDaniel P. Berrange if (inet_parse_flag("ipv6", begin + 5, &addr->ipv6, errp) < 0) { 6773e32370aSDaniel P. Berrange return -1; 6783e32370aSDaniel P. Berrange } 6793e32370aSDaniel P. Berrange addr->has_ipv6 = true; 680baacf047SPaolo Bonzini } 681aec21d31SVladimir Sementsov-Ogievskiy begin = strstr(optstr, ",keep-alive"); 682aec21d31SVladimir Sementsov-Ogievskiy if (begin) { 683aec21d31SVladimir Sementsov-Ogievskiy if (inet_parse_flag("keep-alive", begin + strlen(",keep-alive"), 684aec21d31SVladimir Sementsov-Ogievskiy &addr->keep_alive, errp) < 0) 685aec21d31SVladimir Sementsov-Ogievskiy { 686aec21d31SVladimir Sementsov-Ogievskiy return -1; 687aec21d31SVladimir Sementsov-Ogievskiy } 688aec21d31SVladimir Sementsov-Ogievskiy addr->has_keep_alive = true; 689aec21d31SVladimir Sementsov-Ogievskiy } 6900785bd7aSMarkus Armbruster return 0; 691baacf047SPaolo Bonzini } 692baacf047SPaolo Bonzini 693baacf047SPaolo Bonzini 694baacf047SPaolo Bonzini /** 695baacf047SPaolo Bonzini * Create a blocking socket and connect it to an address. 696baacf047SPaolo Bonzini * 697baacf047SPaolo Bonzini * @str: address string 698baacf047SPaolo Bonzini * @errp: set in case of an error 699baacf047SPaolo Bonzini * 700baacf047SPaolo Bonzini * Returns -1 in case of error, file descriptor on success 701baacf047SPaolo Bonzini **/ 702baacf047SPaolo Bonzini int inet_connect(const char *str, Error **errp) 703baacf047SPaolo Bonzini { 704baacf047SPaolo Bonzini int sock = -1; 7050785bd7aSMarkus Armbruster InetSocketAddress *addr = g_new(InetSocketAddress, 1); 706baacf047SPaolo Bonzini 7070785bd7aSMarkus Armbruster if (!inet_parse(addr, str, errp)) { 708b2587932SCao jin sock = inet_connect_saddr(addr, errp); 709baacf047SPaolo Bonzini } 7100785bd7aSMarkus Armbruster qapi_free_InetSocketAddress(addr); 711baacf047SPaolo Bonzini return sock; 712baacf047SPaolo Bonzini } 713baacf047SPaolo Bonzini 7146a02c806SStefan Hajnoczi #ifdef CONFIG_AF_VSOCK 7156a02c806SStefan Hajnoczi static bool vsock_parse_vaddr_to_sockaddr(const VsockSocketAddress *vaddr, 7166a02c806SStefan Hajnoczi struct sockaddr_vm *svm, 7176a02c806SStefan Hajnoczi Error **errp) 7186a02c806SStefan Hajnoczi { 7196a02c806SStefan Hajnoczi unsigned long long val; 7206a02c806SStefan Hajnoczi 7216a02c806SStefan Hajnoczi memset(svm, 0, sizeof(*svm)); 7226a02c806SStefan Hajnoczi svm->svm_family = AF_VSOCK; 7236a02c806SStefan Hajnoczi 7246a02c806SStefan Hajnoczi if (parse_uint_full(vaddr->cid, &val, 10) < 0 || 7256a02c806SStefan Hajnoczi val > UINT32_MAX) { 7266a02c806SStefan Hajnoczi error_setg(errp, "Failed to parse cid '%s'", vaddr->cid); 7276a02c806SStefan Hajnoczi return false; 7286a02c806SStefan Hajnoczi } 7296a02c806SStefan Hajnoczi svm->svm_cid = val; 7306a02c806SStefan Hajnoczi 7316a02c806SStefan Hajnoczi if (parse_uint_full(vaddr->port, &val, 10) < 0 || 7326a02c806SStefan Hajnoczi val > UINT32_MAX) { 7336a02c806SStefan Hajnoczi error_setg(errp, "Failed to parse port '%s'", vaddr->port); 7346a02c806SStefan Hajnoczi return false; 7356a02c806SStefan Hajnoczi } 7366a02c806SStefan Hajnoczi svm->svm_port = val; 7376a02c806SStefan Hajnoczi 7386a02c806SStefan Hajnoczi return true; 7396a02c806SStefan Hajnoczi } 7406a02c806SStefan Hajnoczi 741dfc00eb7SDaniel P. Berrangé static int vsock_connect_addr(const VsockSocketAddress *vaddr, 742dfc00eb7SDaniel P. Berrangé const struct sockaddr_vm *svm, Error **errp) 7436a02c806SStefan Hajnoczi { 7446a02c806SStefan Hajnoczi int sock, rc; 7456a02c806SStefan Hajnoczi 7466a02c806SStefan Hajnoczi sock = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); 7476a02c806SStefan Hajnoczi if (sock < 0) { 748dfc00eb7SDaniel P. Berrangé error_setg_errno(errp, errno, "Failed to create socket family %d", 749dfc00eb7SDaniel P. Berrangé AF_VSOCK); 7506a02c806SStefan Hajnoczi return -1; 7516a02c806SStefan Hajnoczi } 752b2587932SCao jin 7536a02c806SStefan Hajnoczi /* connect to peer */ 7546a02c806SStefan Hajnoczi do { 7556a02c806SStefan Hajnoczi rc = 0; 7566a02c806SStefan Hajnoczi if (connect(sock, (const struct sockaddr *)svm, sizeof(*svm)) < 0) { 7576a02c806SStefan Hajnoczi rc = -errno; 7586a02c806SStefan Hajnoczi } 7596a02c806SStefan Hajnoczi } while (rc == -EINTR); 7606a02c806SStefan Hajnoczi 761b2587932SCao jin if (rc < 0) { 762dfc00eb7SDaniel P. Berrangé error_setg_errno(errp, errno, "Failed to connect to '%s:%s'", 763dfc00eb7SDaniel P. Berrangé vaddr->cid, vaddr->port); 7646a02c806SStefan Hajnoczi closesocket(sock); 7656a02c806SStefan Hajnoczi return -1; 7666a02c806SStefan Hajnoczi } 767b2587932SCao jin 7686a02c806SStefan Hajnoczi return sock; 7696a02c806SStefan Hajnoczi } 7706a02c806SStefan Hajnoczi 771b2587932SCao jin static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) 7726a02c806SStefan Hajnoczi { 7736a02c806SStefan Hajnoczi struct sockaddr_vm svm; 7746a02c806SStefan Hajnoczi 7756a02c806SStefan Hajnoczi if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { 7766a02c806SStefan Hajnoczi return -1; 7776a02c806SStefan Hajnoczi } 7786a02c806SStefan Hajnoczi 779dfc00eb7SDaniel P. Berrangé return vsock_connect_addr(vaddr, &svm, errp); 7806a02c806SStefan Hajnoczi } 7816a02c806SStefan Hajnoczi 7826a02c806SStefan Hajnoczi static int vsock_listen_saddr(VsockSocketAddress *vaddr, 783e5b6353cSJuan Quintela int num, 7846a02c806SStefan Hajnoczi Error **errp) 7856a02c806SStefan Hajnoczi { 7866a02c806SStefan Hajnoczi struct sockaddr_vm svm; 7876a02c806SStefan Hajnoczi int slisten; 7886a02c806SStefan Hajnoczi 7896a02c806SStefan Hajnoczi if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { 7906a02c806SStefan Hajnoczi return -1; 7916a02c806SStefan Hajnoczi } 7926a02c806SStefan Hajnoczi 7936a02c806SStefan Hajnoczi slisten = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); 7946a02c806SStefan Hajnoczi if (slisten < 0) { 7956a02c806SStefan Hajnoczi error_setg_errno(errp, errno, "Failed to create socket"); 7966a02c806SStefan Hajnoczi return -1; 7976a02c806SStefan Hajnoczi } 7986a02c806SStefan Hajnoczi 7996a02c806SStefan Hajnoczi if (bind(slisten, (const struct sockaddr *)&svm, sizeof(svm)) != 0) { 8006a02c806SStefan Hajnoczi error_setg_errno(errp, errno, "Failed to bind socket"); 8016a02c806SStefan Hajnoczi closesocket(slisten); 8026a02c806SStefan Hajnoczi return -1; 8036a02c806SStefan Hajnoczi } 8046a02c806SStefan Hajnoczi 805e5b6353cSJuan Quintela if (listen(slisten, num) != 0) { 8066a02c806SStefan Hajnoczi error_setg_errno(errp, errno, "Failed to listen on socket"); 8076a02c806SStefan Hajnoczi closesocket(slisten); 8086a02c806SStefan Hajnoczi return -1; 8096a02c806SStefan Hajnoczi } 8106a02c806SStefan Hajnoczi return slisten; 8116a02c806SStefan Hajnoczi } 8126a02c806SStefan Hajnoczi 8134db5c619SMarkus Armbruster static int vsock_parse(VsockSocketAddress *addr, const char *str, 8144db5c619SMarkus Armbruster Error **errp) 8156a02c806SStefan Hajnoczi { 8166a02c806SStefan Hajnoczi char cid[33]; 8176a02c806SStefan Hajnoczi char port[33]; 8186a02c806SStefan Hajnoczi int n; 8196a02c806SStefan Hajnoczi 8206a02c806SStefan Hajnoczi if (sscanf(str, "%32[^:]:%32[^,]%n", cid, port, &n) != 2) { 8216a02c806SStefan Hajnoczi error_setg(errp, "error parsing address '%s'", str); 8224db5c619SMarkus Armbruster return -1; 8236a02c806SStefan Hajnoczi } 8246a02c806SStefan Hajnoczi if (str[n] != '\0') { 8256a02c806SStefan Hajnoczi error_setg(errp, "trailing characters in address '%s'", str); 8264db5c619SMarkus Armbruster return -1; 8276a02c806SStefan Hajnoczi } 8286a02c806SStefan Hajnoczi 8296a02c806SStefan Hajnoczi addr->cid = g_strdup(cid); 8306a02c806SStefan Hajnoczi addr->port = g_strdup(port); 8314db5c619SMarkus Armbruster return 0; 8326a02c806SStefan Hajnoczi } 8336a02c806SStefan Hajnoczi #else 8346a02c806SStefan Hajnoczi static void vsock_unsupported(Error **errp) 8356a02c806SStefan Hajnoczi { 8366a02c806SStefan Hajnoczi error_setg(errp, "socket family AF_VSOCK unsupported"); 8376a02c806SStefan Hajnoczi } 8386a02c806SStefan Hajnoczi 839b2587932SCao jin static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) 8406a02c806SStefan Hajnoczi { 8416a02c806SStefan Hajnoczi vsock_unsupported(errp); 8426a02c806SStefan Hajnoczi return -1; 8436a02c806SStefan Hajnoczi } 8446a02c806SStefan Hajnoczi 8456a02c806SStefan Hajnoczi static int vsock_listen_saddr(VsockSocketAddress *vaddr, 846e5b6353cSJuan Quintela int num, 8476a02c806SStefan Hajnoczi Error **errp) 8486a02c806SStefan Hajnoczi { 8496a02c806SStefan Hajnoczi vsock_unsupported(errp); 8506a02c806SStefan Hajnoczi return -1; 8516a02c806SStefan Hajnoczi } 8526a02c806SStefan Hajnoczi 8534db5c619SMarkus Armbruster static int vsock_parse(VsockSocketAddress *addr, const char *str, 8544db5c619SMarkus Armbruster Error **errp) 8556a02c806SStefan Hajnoczi { 8566a02c806SStefan Hajnoczi vsock_unsupported(errp); 8574db5c619SMarkus Armbruster return -1; 8586a02c806SStefan Hajnoczi } 8596a02c806SStefan Hajnoczi #endif /* CONFIG_AF_VSOCK */ 8606a02c806SStefan Hajnoczi 861baacf047SPaolo Bonzini #ifndef _WIN32 862baacf047SPaolo Bonzini 8638acefc79SMarkus Armbruster static bool saddr_is_abstract(UnixSocketAddress *saddr) 8648acefc79SMarkus Armbruster { 8658acefc79SMarkus Armbruster #ifdef CONFIG_LINUX 8668acefc79SMarkus Armbruster return saddr->abstract; 8678acefc79SMarkus Armbruster #else 8688acefc79SMarkus Armbruster return false; 8698acefc79SMarkus Armbruster #endif 8708acefc79SMarkus Armbruster } 8718acefc79SMarkus Armbruster 8728acefc79SMarkus Armbruster static bool saddr_is_tight(UnixSocketAddress *saddr) 8738acefc79SMarkus Armbruster { 8748acefc79SMarkus Armbruster #ifdef CONFIG_LINUX 8758acefc79SMarkus Armbruster return !saddr->has_tight || saddr->tight; 8768acefc79SMarkus Armbruster #else 8778acefc79SMarkus Armbruster return false; 8788acefc79SMarkus Armbruster #endif 8798acefc79SMarkus Armbruster } 8808acefc79SMarkus Armbruster 8811856835dSDaniel P. Berrange static int unix_listen_saddr(UnixSocketAddress *saddr, 882e5b6353cSJuan Quintela int num, 8831856835dSDaniel P. Berrange Error **errp) 884baacf047SPaolo Bonzini { 8858acefc79SMarkus Armbruster bool abstract = saddr_is_abstract(saddr); 886baacf047SPaolo Bonzini struct sockaddr_un un; 887baacf047SPaolo Bonzini int sock, fd; 888ad9579aaSDaniel P. Berrange char *pathbuf = NULL; 889ad9579aaSDaniel P. Berrange const char *path; 8902d2023c3SDaniel P. Berrangé size_t pathlen; 891776b97d3Sxiaoqiang zhao size_t addrlen; 892baacf047SPaolo Bonzini 893baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 894baacf047SPaolo Bonzini if (sock < 0) { 895b658c53dSPaolo Bonzini error_setg_errno(errp, errno, "Failed to create Unix socket"); 896baacf047SPaolo Bonzini return -1; 897baacf047SPaolo Bonzini } 898baacf047SPaolo Bonzini 8998acefc79SMarkus Armbruster if (saddr->path[0] || abstract) { 900ad9579aaSDaniel P. Berrange path = saddr->path; 901baacf047SPaolo Bonzini } else { 902b658c53dSPaolo Bonzini const char *tmpdir = getenv("TMPDIR"); 903b658c53dSPaolo Bonzini tmpdir = tmpdir ? tmpdir : "/tmp"; 904ad9579aaSDaniel P. Berrange path = pathbuf = g_strdup_printf("%s/qemu-socket-XXXXXX", tmpdir); 905ad9579aaSDaniel P. Berrange } 906ad9579aaSDaniel P. Berrange 9072d2023c3SDaniel P. Berrangé pathlen = strlen(path); 908776b97d3Sxiaoqiang zhao if (pathlen > sizeof(un.sun_path) || 9098acefc79SMarkus Armbruster (abstract && pathlen > (sizeof(un.sun_path) - 1))) { 910ad9579aaSDaniel P. Berrange error_setg(errp, "UNIX socket path '%s' is too long", path); 911ad9579aaSDaniel P. Berrange error_append_hint(errp, "Path must be less than %zu bytes\n", 9128acefc79SMarkus Armbruster abstract ? sizeof(un.sun_path) - 1 : 913ad9579aaSDaniel P. Berrange sizeof(un.sun_path)); 914b658c53dSPaolo Bonzini goto err; 915b658c53dSPaolo Bonzini } 916b658c53dSPaolo Bonzini 917ad9579aaSDaniel P. Berrange if (pathbuf != NULL) { 918baacf047SPaolo Bonzini /* 919baacf047SPaolo Bonzini * This dummy fd usage silences the mktemp() unsecure warning. 920baacf047SPaolo Bonzini * Using mkstemp() doesn't make things more secure here 921baacf047SPaolo Bonzini * though. bind() complains about existing files, so we have 922baacf047SPaolo Bonzini * to unlink first and thus re-open the race window. The 923baacf047SPaolo Bonzini * worst case possible is bind() failing, i.e. a DoS attack. 924baacf047SPaolo Bonzini */ 925ad9579aaSDaniel P. Berrange fd = mkstemp(pathbuf); 926b658c53dSPaolo Bonzini if (fd < 0) { 927b658c53dSPaolo Bonzini error_setg_errno(errp, errno, 928ad9579aaSDaniel P. Berrange "Failed to make a temporary socket %s", pathbuf); 929b658c53dSPaolo Bonzini goto err; 930b658c53dSPaolo Bonzini } 931b658c53dSPaolo Bonzini close(fd); 932baacf047SPaolo Bonzini } 933baacf047SPaolo Bonzini 9348acefc79SMarkus Armbruster if (!abstract && unlink(path) < 0 && errno != ENOENT) { 9350ef705a2SCole Robinson error_setg_errno(errp, errno, 936ad9579aaSDaniel P. Berrange "Failed to unlink socket %s", path); 9370ef705a2SCole Robinson goto err; 9380ef705a2SCole Robinson } 939ad9579aaSDaniel P. Berrange 940ad9579aaSDaniel P. Berrange memset(&un, 0, sizeof(un)); 941ad9579aaSDaniel P. Berrange un.sun_family = AF_UNIX; 942776b97d3Sxiaoqiang zhao addrlen = sizeof(un); 943ad9579aaSDaniel P. Berrange 9448acefc79SMarkus Armbruster if (abstract) { 945776b97d3Sxiaoqiang zhao un.sun_path[0] = '\0'; 946776b97d3Sxiaoqiang zhao memcpy(&un.sun_path[1], path, pathlen); 9478acefc79SMarkus Armbruster if (saddr_is_tight(saddr)) { 948776b97d3Sxiaoqiang zhao addrlen = offsetof(struct sockaddr_un, sun_path) + 1 + pathlen; 949776b97d3Sxiaoqiang zhao } 950776b97d3Sxiaoqiang zhao } else { 951776b97d3Sxiaoqiang zhao memcpy(un.sun_path, path, pathlen); 952776b97d3Sxiaoqiang zhao } 953776b97d3Sxiaoqiang zhao 954776b97d3Sxiaoqiang zhao if (bind(sock, (struct sockaddr *) &un, addrlen) < 0) { 95556382bd5SDaniel P. Berrange error_setg_errno(errp, errno, "Failed to bind socket to %s", path); 956baacf047SPaolo Bonzini goto err; 957baacf047SPaolo Bonzini } 958e5b6353cSJuan Quintela if (listen(sock, num) < 0) { 959235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to listen on socket"); 960baacf047SPaolo Bonzini goto err; 961baacf047SPaolo Bonzini } 962baacf047SPaolo Bonzini 963ad9579aaSDaniel P. Berrange g_free(pathbuf); 964baacf047SPaolo Bonzini return sock; 965baacf047SPaolo Bonzini 966baacf047SPaolo Bonzini err: 967ad9579aaSDaniel P. Berrange g_free(pathbuf); 968baacf047SPaolo Bonzini closesocket(sock); 969baacf047SPaolo Bonzini return -1; 970baacf047SPaolo Bonzini } 971baacf047SPaolo Bonzini 972b2587932SCao jin static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) 973baacf047SPaolo Bonzini { 9748acefc79SMarkus Armbruster bool abstract = saddr_is_abstract(saddr); 975baacf047SPaolo Bonzini struct sockaddr_un un; 976baacf047SPaolo Bonzini int sock, rc; 9772d2023c3SDaniel P. Berrangé size_t pathlen; 978776b97d3Sxiaoqiang zhao size_t addrlen; 979baacf047SPaolo Bonzini 9802942e420SDaniel P. Berrange if (saddr->path == NULL) { 981312fd5f2SMarkus Armbruster error_setg(errp, "unix connect: no path specified"); 982baacf047SPaolo Bonzini return -1; 983baacf047SPaolo Bonzini } 984baacf047SPaolo Bonzini 985baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 986baacf047SPaolo Bonzini if (sock < 0) { 987235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 988baacf047SPaolo Bonzini return -1; 989baacf047SPaolo Bonzini } 990baacf047SPaolo Bonzini 9912d2023c3SDaniel P. Berrangé pathlen = strlen(saddr->path); 992776b97d3Sxiaoqiang zhao if (pathlen > sizeof(un.sun_path) || 9938acefc79SMarkus Armbruster (abstract && pathlen > (sizeof(un.sun_path) - 1))) { 994ad9579aaSDaniel P. Berrange error_setg(errp, "UNIX socket path '%s' is too long", saddr->path); 995ad9579aaSDaniel P. Berrange error_append_hint(errp, "Path must be less than %zu bytes\n", 9968acefc79SMarkus Armbruster abstract ? sizeof(un.sun_path) - 1 : 997ad9579aaSDaniel P. Berrange sizeof(un.sun_path)); 998ad9579aaSDaniel P. Berrange goto err; 999ad9579aaSDaniel P. Berrange } 1000ad9579aaSDaniel P. Berrange 1001baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 1002baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 1003776b97d3Sxiaoqiang zhao addrlen = sizeof(un); 1004baacf047SPaolo Bonzini 10058acefc79SMarkus Armbruster if (abstract) { 1006776b97d3Sxiaoqiang zhao un.sun_path[0] = '\0'; 1007776b97d3Sxiaoqiang zhao memcpy(&un.sun_path[1], saddr->path, pathlen); 10088acefc79SMarkus Armbruster if (saddr_is_tight(saddr)) { 1009776b97d3Sxiaoqiang zhao addrlen = offsetof(struct sockaddr_un, sun_path) + 1 + pathlen; 1010776b97d3Sxiaoqiang zhao } 1011776b97d3Sxiaoqiang zhao } else { 1012776b97d3Sxiaoqiang zhao memcpy(un.sun_path, saddr->path, pathlen); 1013776b97d3Sxiaoqiang zhao } 1014baacf047SPaolo Bonzini /* connect to peer */ 1015baacf047SPaolo Bonzini do { 1016baacf047SPaolo Bonzini rc = 0; 1017776b97d3Sxiaoqiang zhao if (connect(sock, (struct sockaddr *) &un, addrlen) < 0) { 1018b16a44e1SDaniel P. Berrange rc = -errno; 1019baacf047SPaolo Bonzini } 1020baacf047SPaolo Bonzini } while (rc == -EINTR); 1021baacf047SPaolo Bonzini 1022baacf047SPaolo Bonzini if (rc < 0) { 1023dfc00eb7SDaniel P. Berrangé error_setg_errno(errp, -rc, "Failed to connect to '%s'", 1024ad9579aaSDaniel P. Berrange saddr->path); 1025ad9579aaSDaniel P. Berrange goto err; 1026baacf047SPaolo Bonzini } 1027baacf047SPaolo Bonzini 1028baacf047SPaolo Bonzini return sock; 1029ad9579aaSDaniel P. Berrange 1030ad9579aaSDaniel P. Berrange err: 1031ad9579aaSDaniel P. Berrange close(sock); 1032ad9579aaSDaniel P. Berrange return -1; 1033baacf047SPaolo Bonzini } 1034baacf047SPaolo Bonzini 1035baacf047SPaolo Bonzini #else 1036baacf047SPaolo Bonzini 10371856835dSDaniel P. Berrange static int unix_listen_saddr(UnixSocketAddress *saddr, 1038e5b6353cSJuan Quintela int num, 10391856835dSDaniel P. Berrange Error **errp) 1040baacf047SPaolo Bonzini { 1041baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 1042baacf047SPaolo Bonzini errno = ENOTSUP; 1043baacf047SPaolo Bonzini return -1; 1044baacf047SPaolo Bonzini } 1045baacf047SPaolo Bonzini 1046b2587932SCao jin static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) 1047baacf047SPaolo Bonzini { 1048baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 1049baacf047SPaolo Bonzini errno = ENOTSUP; 1050baacf047SPaolo Bonzini return -1; 1051baacf047SPaolo Bonzini } 1052baacf047SPaolo Bonzini #endif 1053baacf047SPaolo Bonzini 1054baacf047SPaolo Bonzini /* compatibility wrapper */ 105562473511SDaniel P. Berrange int unix_listen(const char *str, Error **errp) 1056baacf047SPaolo Bonzini { 10571856835dSDaniel P. Berrange UnixSocketAddress *saddr; 1058caf88d74SMarc-André Lureau int sock; 1059baacf047SPaolo Bonzini 10601856835dSDaniel P. Berrange saddr = g_new0(UnixSocketAddress, 1); 10611856835dSDaniel P. Berrange saddr->path = g_strdup(str); 1062e5b6353cSJuan Quintela sock = unix_listen_saddr(saddr, 1, errp); 10631856835dSDaniel P. Berrange qapi_free_UnixSocketAddress(saddr); 1064baacf047SPaolo Bonzini return sock; 1065baacf047SPaolo Bonzini } 1066baacf047SPaolo Bonzini 1067baacf047SPaolo Bonzini int unix_connect(const char *path, Error **errp) 1068baacf047SPaolo Bonzini { 10692942e420SDaniel P. Berrange UnixSocketAddress *saddr; 1070baacf047SPaolo Bonzini int sock; 1071baacf047SPaolo Bonzini 10722942e420SDaniel P. Berrange saddr = g_new0(UnixSocketAddress, 1); 10732942e420SDaniel P. Berrange saddr->path = g_strdup(path); 1074b2587932SCao jin sock = unix_connect_saddr(saddr, errp); 10752942e420SDaniel P. Berrange qapi_free_UnixSocketAddress(saddr); 1076baacf047SPaolo Bonzini return sock; 1077baacf047SPaolo Bonzini } 1078baacf047SPaolo Bonzini 1079baacf047SPaolo Bonzini 1080bd269ebcSMarkus Armbruster SocketAddress *socket_parse(const char *str, Error **errp) 1081baacf047SPaolo Bonzini { 1082bd269ebcSMarkus Armbruster SocketAddress *addr; 1083baacf047SPaolo Bonzini 1084bd269ebcSMarkus Armbruster addr = g_new0(SocketAddress, 1); 1085baacf047SPaolo Bonzini if (strstart(str, "unix:", NULL)) { 1086baacf047SPaolo Bonzini if (str[5] == '\0') { 1087312fd5f2SMarkus Armbruster error_setg(errp, "invalid Unix socket address"); 1088baacf047SPaolo Bonzini goto fail; 1089baacf047SPaolo Bonzini } else { 1090bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_UNIX; 1091bd269ebcSMarkus Armbruster addr->u.q_unix.path = g_strdup(str + 5); 1092baacf047SPaolo Bonzini } 1093baacf047SPaolo Bonzini } else if (strstart(str, "fd:", NULL)) { 1094baacf047SPaolo Bonzini if (str[3] == '\0') { 1095312fd5f2SMarkus Armbruster error_setg(errp, "invalid file descriptor address"); 1096baacf047SPaolo Bonzini goto fail; 1097baacf047SPaolo Bonzini } else { 1098bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_FD; 1099bd269ebcSMarkus Armbruster addr->u.fd.str = g_strdup(str + 3); 1100baacf047SPaolo Bonzini } 11016a02c806SStefan Hajnoczi } else if (strstart(str, "vsock:", NULL)) { 1102bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_VSOCK; 1103bd269ebcSMarkus Armbruster if (vsock_parse(&addr->u.vsock, str + strlen("vsock:"), errp)) { 11046a02c806SStefan Hajnoczi goto fail; 11056a02c806SStefan Hajnoczi } 1106baacf047SPaolo Bonzini } else { 1107bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_INET; 1108bd269ebcSMarkus Armbruster if (inet_parse(&addr->u.inet, str, errp)) { 1109baacf047SPaolo Bonzini goto fail; 1110baacf047SPaolo Bonzini } 1111baacf047SPaolo Bonzini } 1112baacf047SPaolo Bonzini return addr; 1113baacf047SPaolo Bonzini 1114baacf047SPaolo Bonzini fail: 1115bd269ebcSMarkus Armbruster qapi_free_SocketAddress(addr); 1116baacf047SPaolo Bonzini return NULL; 1117baacf047SPaolo Bonzini } 1118baacf047SPaolo Bonzini 1119*37179e9eSStefan Hajnoczi static int socket_get_fd(const char *fdstr, Error **errp) 112030bdb3c5SDaniel P. Berrange { 1121947e4744SKevin Wolf Monitor *cur_mon = monitor_cur(); 11221723d6b1SDaniel P. Berrange int fd; 11231723d6b1SDaniel P. Berrange if (cur_mon) { 11241723d6b1SDaniel P. Berrange fd = monitor_get_fd(cur_mon, fdstr, errp); 112530bdb3c5SDaniel P. Berrange if (fd < 0) { 112630bdb3c5SDaniel P. Berrange return -1; 112730bdb3c5SDaniel P. Berrange } 11281723d6b1SDaniel P. Berrange } else { 11291723d6b1SDaniel P. Berrange if (qemu_strtoi(fdstr, NULL, 10, &fd) < 0) { 11301723d6b1SDaniel P. Berrange error_setg_errno(errp, errno, 11311723d6b1SDaniel P. Berrange "Unable to parse FD number %s", 11321723d6b1SDaniel P. Berrange fdstr); 11331723d6b1SDaniel P. Berrange return -1; 11341723d6b1SDaniel P. Berrange } 11351723d6b1SDaniel P. Berrange } 113630bdb3c5SDaniel P. Berrange if (!fd_is_socket(fd)) { 113730bdb3c5SDaniel P. Berrange error_setg(errp, "File descriptor '%s' is not a socket", fdstr); 113830bdb3c5SDaniel P. Berrange close(fd); 113930bdb3c5SDaniel P. Berrange return -1; 114030bdb3c5SDaniel P. Berrange } 114130bdb3c5SDaniel P. Berrange return fd; 114230bdb3c5SDaniel P. Berrange } 114330bdb3c5SDaniel P. Berrange 1144b2587932SCao jin int socket_connect(SocketAddress *addr, Error **errp) 1145baacf047SPaolo Bonzini { 1146baacf047SPaolo Bonzini int fd; 1147baacf047SPaolo Bonzini 11482d32addaSEric Blake switch (addr->type) { 1149bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_INET: 1150b2587932SCao jin fd = inet_connect_saddr(&addr->u.inet, errp); 1151baacf047SPaolo Bonzini break; 1152baacf047SPaolo Bonzini 1153bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_UNIX: 1154b2587932SCao jin fd = unix_connect_saddr(&addr->u.q_unix, errp); 1155baacf047SPaolo Bonzini break; 1156baacf047SPaolo Bonzini 1157bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_FD: 1158*37179e9eSStefan Hajnoczi fd = socket_get_fd(addr->u.fd.str, errp); 1159baacf047SPaolo Bonzini break; 1160baacf047SPaolo Bonzini 1161bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_VSOCK: 1162b2587932SCao jin fd = vsock_connect_saddr(&addr->u.vsock, errp); 11636a02c806SStefan Hajnoczi break; 11646a02c806SStefan Hajnoczi 1165baacf047SPaolo Bonzini default: 1166baacf047SPaolo Bonzini abort(); 1167baacf047SPaolo Bonzini } 1168baacf047SPaolo Bonzini return fd; 1169baacf047SPaolo Bonzini } 1170baacf047SPaolo Bonzini 1171e5b6353cSJuan Quintela int socket_listen(SocketAddress *addr, int num, Error **errp) 1172baacf047SPaolo Bonzini { 1173baacf047SPaolo Bonzini int fd; 1174baacf047SPaolo Bonzini 1175e5b6353cSJuan Quintela trace_socket_listen(num); 11762d32addaSEric Blake switch (addr->type) { 1177bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_INET: 1178e5b6353cSJuan Quintela fd = inet_listen_saddr(&addr->u.inet, 0, num, errp); 1179baacf047SPaolo Bonzini break; 1180baacf047SPaolo Bonzini 1181bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_UNIX: 1182e5b6353cSJuan Quintela fd = unix_listen_saddr(&addr->u.q_unix, num, errp); 1183baacf047SPaolo Bonzini break; 1184baacf047SPaolo Bonzini 1185bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_FD: 1186*37179e9eSStefan Hajnoczi fd = socket_get_fd(addr->u.fd.str, errp); 1187*37179e9eSStefan Hajnoczi if (fd < 0) { 1188*37179e9eSStefan Hajnoczi return -1; 1189*37179e9eSStefan Hajnoczi } 1190*37179e9eSStefan Hajnoczi 1191*37179e9eSStefan Hajnoczi /* 1192*37179e9eSStefan Hajnoczi * If the socket is not yet in the listen state, then transition it to 1193*37179e9eSStefan Hajnoczi * the listen state now. 1194*37179e9eSStefan Hajnoczi * 1195*37179e9eSStefan Hajnoczi * If it's already listening then this updates the backlog value as 1196*37179e9eSStefan Hajnoczi * requested. 1197*37179e9eSStefan Hajnoczi * 1198*37179e9eSStefan Hajnoczi * If this socket cannot listen because it's already in another state 1199*37179e9eSStefan Hajnoczi * (e.g. unbound or connected) then we'll catch the error here. 1200*37179e9eSStefan Hajnoczi */ 1201*37179e9eSStefan Hajnoczi if (listen(fd, num) != 0) { 1202*37179e9eSStefan Hajnoczi error_setg_errno(errp, errno, "Failed to listen on fd socket"); 1203*37179e9eSStefan Hajnoczi closesocket(fd); 1204*37179e9eSStefan Hajnoczi return -1; 1205*37179e9eSStefan Hajnoczi } 1206baacf047SPaolo Bonzini break; 1207baacf047SPaolo Bonzini 1208bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_VSOCK: 1209e5b6353cSJuan Quintela fd = vsock_listen_saddr(&addr->u.vsock, num, errp); 12106a02c806SStefan Hajnoczi break; 12116a02c806SStefan Hajnoczi 1212baacf047SPaolo Bonzini default: 1213baacf047SPaolo Bonzini abort(); 1214baacf047SPaolo Bonzini } 1215baacf047SPaolo Bonzini return fd; 1216baacf047SPaolo Bonzini } 1217baacf047SPaolo Bonzini 121874b6ce43SMarc-André Lureau void socket_listen_cleanup(int fd, Error **errp) 121974b6ce43SMarc-André Lureau { 1220bd269ebcSMarkus Armbruster SocketAddress *addr; 122174b6ce43SMarc-André Lureau 122274b6ce43SMarc-André Lureau addr = socket_local_address(fd, errp); 12232d7ad7c0SDaniel P. Berrange if (!addr) { 12242d7ad7c0SDaniel P. Berrange return; 12252d7ad7c0SDaniel P. Berrange } 122674b6ce43SMarc-André Lureau 1227bd269ebcSMarkus Armbruster if (addr->type == SOCKET_ADDRESS_TYPE_UNIX 1228bd269ebcSMarkus Armbruster && addr->u.q_unix.path) { 1229bd269ebcSMarkus Armbruster if (unlink(addr->u.q_unix.path) < 0 && errno != ENOENT) { 123074b6ce43SMarc-André Lureau error_setg_errno(errp, errno, 123174b6ce43SMarc-André Lureau "Failed to unlink socket %s", 1232bd269ebcSMarkus Armbruster addr->u.q_unix.path); 123374b6ce43SMarc-André Lureau } 123474b6ce43SMarc-André Lureau } 123574b6ce43SMarc-André Lureau 1236bd269ebcSMarkus Armbruster qapi_free_SocketAddress(addr); 123774b6ce43SMarc-André Lureau } 123874b6ce43SMarc-André Lureau 1239bd269ebcSMarkus Armbruster int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) 12403ecc059dSGerd Hoffmann { 12413ecc059dSGerd Hoffmann int fd; 12423ecc059dSGerd Hoffmann 1243ca0b64e5SMarkus Armbruster /* 1244bd269ebcSMarkus Armbruster * TODO SOCKET_ADDRESS_TYPE_FD when fd is AF_INET or AF_INET6 1245ca0b64e5SMarkus Armbruster * (although other address families can do SOCK_DGRAM, too) 1246ca0b64e5SMarkus Armbruster */ 12472d32addaSEric Blake switch (remote->type) { 1248bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_TYPE_INET: 1249bd269ebcSMarkus Armbruster fd = inet_dgram_saddr(&remote->u.inet, 1250bd269ebcSMarkus Armbruster local ? &local->u.inet : NULL, errp); 12513ecc059dSGerd Hoffmann break; 12523ecc059dSGerd Hoffmann 12533ecc059dSGerd Hoffmann default: 12543ecc059dSGerd Hoffmann error_setg(errp, "socket type unsupported for datagram"); 12557a5b6af1SGerd Hoffmann fd = -1; 12563ecc059dSGerd Hoffmann } 12573ecc059dSGerd Hoffmann return fd; 12583ecc059dSGerd Hoffmann } 125917c55decSDaniel P. Berrange 126017c55decSDaniel P. Berrange 1261bd269ebcSMarkus Armbruster static SocketAddress * 126217c55decSDaniel P. Berrange socket_sockaddr_to_address_inet(struct sockaddr_storage *sa, 126317c55decSDaniel P. Berrange socklen_t salen, 126417c55decSDaniel P. Berrange Error **errp) 126517c55decSDaniel P. Berrange { 126617c55decSDaniel P. Berrange char host[NI_MAXHOST]; 126717c55decSDaniel P. Berrange char serv[NI_MAXSERV]; 1268bd269ebcSMarkus Armbruster SocketAddress *addr; 12690399293eSEric Blake InetSocketAddress *inet; 127017c55decSDaniel P. Berrange int ret; 127117c55decSDaniel P. Berrange 127217c55decSDaniel P. Berrange ret = getnameinfo((struct sockaddr *)sa, salen, 127317c55decSDaniel P. Berrange host, sizeof(host), 127417c55decSDaniel P. Berrange serv, sizeof(serv), 127517c55decSDaniel P. Berrange NI_NUMERICHOST | NI_NUMERICSERV); 127617c55decSDaniel P. Berrange if (ret != 0) { 127717c55decSDaniel P. Berrange error_setg(errp, "Cannot format numeric socket address: %s", 127817c55decSDaniel P. Berrange gai_strerror(ret)); 127917c55decSDaniel P. Berrange return NULL; 128017c55decSDaniel P. Berrange } 128117c55decSDaniel P. Berrange 1282bd269ebcSMarkus Armbruster addr = g_new0(SocketAddress, 1); 1283bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_INET; 1284bd269ebcSMarkus Armbruster inet = &addr->u.inet; 12850399293eSEric Blake inet->host = g_strdup(host); 12860399293eSEric Blake inet->port = g_strdup(serv); 128717c55decSDaniel P. Berrange if (sa->ss_family == AF_INET) { 12880399293eSEric Blake inet->has_ipv4 = inet->ipv4 = true; 128917c55decSDaniel P. Berrange } else { 12900399293eSEric Blake inet->has_ipv6 = inet->ipv6 = true; 129117c55decSDaniel P. Berrange } 129217c55decSDaniel P. Berrange 129317c55decSDaniel P. Berrange return addr; 129417c55decSDaniel P. Berrange } 129517c55decSDaniel P. Berrange 129617c55decSDaniel P. Berrange 129717c55decSDaniel P. Berrange #ifndef WIN32 1298bd269ebcSMarkus Armbruster static SocketAddress * 129917c55decSDaniel P. Berrange socket_sockaddr_to_address_unix(struct sockaddr_storage *sa, 130017c55decSDaniel P. Berrange socklen_t salen, 130117c55decSDaniel P. Berrange Error **errp) 130217c55decSDaniel P. Berrange { 1303bd269ebcSMarkus Armbruster SocketAddress *addr; 130417c55decSDaniel P. Berrange struct sockaddr_un *su = (struct sockaddr_un *)sa; 130517c55decSDaniel P. Berrange 1306bd269ebcSMarkus Armbruster addr = g_new0(SocketAddress, 1); 1307bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_UNIX; 13083b14b4ecSMarkus Armbruster #ifdef CONFIG_LINUX 13093b14b4ecSMarkus Armbruster if (!su->sun_path[0]) { 13103b14b4ecSMarkus Armbruster /* Linux abstract socket */ 13113b14b4ecSMarkus Armbruster addr->u.q_unix.path = g_strndup(su->sun_path + 1, 13123b14b4ecSMarkus Armbruster sizeof(su->sun_path) - 1); 13133b14b4ecSMarkus Armbruster addr->u.q_unix.has_abstract = true; 13143b14b4ecSMarkus Armbruster addr->u.q_unix.abstract = true; 13153b14b4ecSMarkus Armbruster addr->u.q_unix.has_tight = true; 13163b14b4ecSMarkus Armbruster addr->u.q_unix.tight = salen < sizeof(*su); 13173b14b4ecSMarkus Armbruster return addr; 131817c55decSDaniel P. Berrange } 13193b14b4ecSMarkus Armbruster #endif 132017c55decSDaniel P. Berrange 13213b14b4ecSMarkus Armbruster addr->u.q_unix.path = g_strndup(su->sun_path, sizeof(su->sun_path)); 132217c55decSDaniel P. Berrange return addr; 132317c55decSDaniel P. Berrange } 132417c55decSDaniel P. Berrange #endif /* WIN32 */ 132517c55decSDaniel P. Berrange 13266a02c806SStefan Hajnoczi #ifdef CONFIG_AF_VSOCK 1327bd269ebcSMarkus Armbruster static SocketAddress * 13286a02c806SStefan Hajnoczi socket_sockaddr_to_address_vsock(struct sockaddr_storage *sa, 13296a02c806SStefan Hajnoczi socklen_t salen, 13306a02c806SStefan Hajnoczi Error **errp) 13316a02c806SStefan Hajnoczi { 1332bd269ebcSMarkus Armbruster SocketAddress *addr; 13336a02c806SStefan Hajnoczi VsockSocketAddress *vaddr; 13346a02c806SStefan Hajnoczi struct sockaddr_vm *svm = (struct sockaddr_vm *)sa; 13356a02c806SStefan Hajnoczi 1336bd269ebcSMarkus Armbruster addr = g_new0(SocketAddress, 1); 1337bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_VSOCK; 1338bd269ebcSMarkus Armbruster vaddr = &addr->u.vsock; 13396a02c806SStefan Hajnoczi vaddr->cid = g_strdup_printf("%u", svm->svm_cid); 13406a02c806SStefan Hajnoczi vaddr->port = g_strdup_printf("%u", svm->svm_port); 13416a02c806SStefan Hajnoczi 13426a02c806SStefan Hajnoczi return addr; 13436a02c806SStefan Hajnoczi } 13446a02c806SStefan Hajnoczi #endif /* CONFIG_AF_VSOCK */ 13456a02c806SStefan Hajnoczi 1346bd269ebcSMarkus Armbruster SocketAddress * 134717c55decSDaniel P. Berrange socket_sockaddr_to_address(struct sockaddr_storage *sa, 134817c55decSDaniel P. Berrange socklen_t salen, 134917c55decSDaniel P. Berrange Error **errp) 135017c55decSDaniel P. Berrange { 135117c55decSDaniel P. Berrange switch (sa->ss_family) { 135217c55decSDaniel P. Berrange case AF_INET: 135317c55decSDaniel P. Berrange case AF_INET6: 135417c55decSDaniel P. Berrange return socket_sockaddr_to_address_inet(sa, salen, errp); 135517c55decSDaniel P. Berrange 135617c55decSDaniel P. Berrange #ifndef WIN32 135717c55decSDaniel P. Berrange case AF_UNIX: 135817c55decSDaniel P. Berrange return socket_sockaddr_to_address_unix(sa, salen, errp); 135917c55decSDaniel P. Berrange #endif /* WIN32 */ 136017c55decSDaniel P. Berrange 13616a02c806SStefan Hajnoczi #ifdef CONFIG_AF_VSOCK 13626a02c806SStefan Hajnoczi case AF_VSOCK: 13636a02c806SStefan Hajnoczi return socket_sockaddr_to_address_vsock(sa, salen, errp); 13646a02c806SStefan Hajnoczi #endif 13656a02c806SStefan Hajnoczi 136617c55decSDaniel P. Berrange default: 136717c55decSDaniel P. Berrange error_setg(errp, "socket family %d unsupported", 136817c55decSDaniel P. Berrange sa->ss_family); 136917c55decSDaniel P. Berrange return NULL; 137017c55decSDaniel P. Berrange } 137117c55decSDaniel P. Berrange return 0; 137217c55decSDaniel P. Berrange } 137317c55decSDaniel P. Berrange 137417c55decSDaniel P. Berrange 1375bd269ebcSMarkus Armbruster SocketAddress *socket_local_address(int fd, Error **errp) 137617c55decSDaniel P. Berrange { 137717c55decSDaniel P. Berrange struct sockaddr_storage ss; 137817c55decSDaniel P. Berrange socklen_t sslen = sizeof(ss); 137917c55decSDaniel P. Berrange 138017c55decSDaniel P. Berrange if (getsockname(fd, (struct sockaddr *)&ss, &sslen) < 0) { 1381b16a44e1SDaniel P. Berrange error_setg_errno(errp, errno, "%s", 138217c55decSDaniel P. Berrange "Unable to query local socket address"); 138317c55decSDaniel P. Berrange return NULL; 138417c55decSDaniel P. Berrange } 138517c55decSDaniel P. Berrange 138617c55decSDaniel P. Berrange return socket_sockaddr_to_address(&ss, sslen, errp); 138717c55decSDaniel P. Berrange } 138817c55decSDaniel P. Berrange 138917c55decSDaniel P. Berrange 1390bd269ebcSMarkus Armbruster SocketAddress *socket_remote_address(int fd, Error **errp) 139117c55decSDaniel P. Berrange { 139217c55decSDaniel P. Berrange struct sockaddr_storage ss; 139317c55decSDaniel P. Berrange socklen_t sslen = sizeof(ss); 139417c55decSDaniel P. Berrange 139517c55decSDaniel P. Berrange if (getpeername(fd, (struct sockaddr *)&ss, &sslen) < 0) { 1396b16a44e1SDaniel P. Berrange error_setg_errno(errp, errno, "%s", 139717c55decSDaniel P. Berrange "Unable to query remote socket address"); 139817c55decSDaniel P. Berrange return NULL; 139917c55decSDaniel P. Berrange } 140017c55decSDaniel P. Berrange 140117c55decSDaniel P. Berrange return socket_sockaddr_to_address(&ss, sslen, errp); 140217c55decSDaniel P. Berrange } 14032a8e21c7SDaniel P. Berrange 1404216411b8SMarkus Armbruster 1405bd269ebcSMarkus Armbruster SocketAddress *socket_address_flatten(SocketAddressLegacy *addr_legacy) 1406bd269ebcSMarkus Armbruster { 1407fc0f0059SMarkus Armbruster SocketAddress *addr; 1408bd269ebcSMarkus Armbruster 1409bd269ebcSMarkus Armbruster if (!addr_legacy) { 1410bd269ebcSMarkus Armbruster return NULL; 1411bd269ebcSMarkus Armbruster } 1412bd269ebcSMarkus Armbruster 1413fc0f0059SMarkus Armbruster addr = g_new(SocketAddress, 1); 1414fc0f0059SMarkus Armbruster 1415bd269ebcSMarkus Armbruster switch (addr_legacy->type) { 1416bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_LEGACY_KIND_INET: 1417bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_INET; 1418bd269ebcSMarkus Armbruster QAPI_CLONE_MEMBERS(InetSocketAddress, &addr->u.inet, 1419bd269ebcSMarkus Armbruster addr_legacy->u.inet.data); 1420bd269ebcSMarkus Armbruster break; 1421bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_LEGACY_KIND_UNIX: 1422bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_UNIX; 1423bd269ebcSMarkus Armbruster QAPI_CLONE_MEMBERS(UnixSocketAddress, &addr->u.q_unix, 1424bd269ebcSMarkus Armbruster addr_legacy->u.q_unix.data); 1425bd269ebcSMarkus Armbruster break; 1426bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_LEGACY_KIND_VSOCK: 1427bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_VSOCK; 1428bd269ebcSMarkus Armbruster QAPI_CLONE_MEMBERS(VsockSocketAddress, &addr->u.vsock, 1429bd269ebcSMarkus Armbruster addr_legacy->u.vsock.data); 1430bd269ebcSMarkus Armbruster break; 1431bd269ebcSMarkus Armbruster case SOCKET_ADDRESS_LEGACY_KIND_FD: 1432bd269ebcSMarkus Armbruster addr->type = SOCKET_ADDRESS_TYPE_FD; 1433bd269ebcSMarkus Armbruster QAPI_CLONE_MEMBERS(String, &addr->u.fd, addr_legacy->u.fd.data); 1434bd269ebcSMarkus Armbruster break; 1435bd269ebcSMarkus Armbruster default: 1436bd269ebcSMarkus Armbruster abort(); 1437bd269ebcSMarkus Armbruster } 1438bd269ebcSMarkus Armbruster 1439bd269ebcSMarkus Armbruster return addr; 1440bd269ebcSMarkus Armbruster } 1441