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 20baacf047SPaolo Bonzini #include "monitor/monitor.h" 21da34e65cSMarkus Armbruster #include "qapi/error.h" 22baacf047SPaolo Bonzini #include "qemu/sockets.h" 23baacf047SPaolo Bonzini #include "qemu/main-loop.h" 242a8e21c7SDaniel P. Berrange #include "qapi/qmp-input-visitor.h" 252a8e21c7SDaniel P. Berrange #include "qapi/qmp-output-visitor.h" 262a8e21c7SDaniel P. Berrange #include "qapi-visit.h" 27*f348b6d1SVeronia Bahaa #include "qemu/cutils.h" 28baacf047SPaolo Bonzini 29baacf047SPaolo Bonzini #ifndef AI_ADDRCONFIG 30baacf047SPaolo Bonzini # define AI_ADDRCONFIG 0 31baacf047SPaolo Bonzini #endif 323de3d698SWolfgang Bumiller #ifndef AI_V4MAPPED 333de3d698SWolfgang Bumiller # define AI_V4MAPPED 0 343de3d698SWolfgang Bumiller #endif 35baacf047SPaolo Bonzini 36baacf047SPaolo Bonzini 37baacf047SPaolo Bonzini static int inet_getport(struct addrinfo *e) 38baacf047SPaolo Bonzini { 39baacf047SPaolo Bonzini struct sockaddr_in *i4; 40baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 41baacf047SPaolo Bonzini 42baacf047SPaolo Bonzini switch (e->ai_family) { 43baacf047SPaolo Bonzini case PF_INET6: 44baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 45baacf047SPaolo Bonzini return ntohs(i6->sin6_port); 46baacf047SPaolo Bonzini case PF_INET: 47baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 48baacf047SPaolo Bonzini return ntohs(i4->sin_port); 49baacf047SPaolo Bonzini default: 50baacf047SPaolo Bonzini return 0; 51baacf047SPaolo Bonzini } 52baacf047SPaolo Bonzini } 53baacf047SPaolo Bonzini 54baacf047SPaolo Bonzini static void inet_setport(struct addrinfo *e, int port) 55baacf047SPaolo Bonzini { 56baacf047SPaolo Bonzini struct sockaddr_in *i4; 57baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 58baacf047SPaolo Bonzini 59baacf047SPaolo Bonzini switch (e->ai_family) { 60baacf047SPaolo Bonzini case PF_INET6: 61baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 62baacf047SPaolo Bonzini i6->sin6_port = htons(port); 63baacf047SPaolo Bonzini break; 64baacf047SPaolo Bonzini case PF_INET: 65baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 66baacf047SPaolo Bonzini i4->sin_port = htons(port); 67baacf047SPaolo Bonzini break; 68baacf047SPaolo Bonzini } 69baacf047SPaolo Bonzini } 70baacf047SPaolo Bonzini 71a589569fSWenchao Xia NetworkAddressFamily inet_netfamily(int family) 72a589569fSWenchao Xia { 73a589569fSWenchao Xia switch (family) { 74a589569fSWenchao Xia case PF_INET6: return NETWORK_ADDRESS_FAMILY_IPV6; 75a589569fSWenchao Xia case PF_INET: return NETWORK_ADDRESS_FAMILY_IPV4; 76a589569fSWenchao Xia case PF_UNIX: return NETWORK_ADDRESS_FAMILY_UNIX; 77a589569fSWenchao Xia } 78a589569fSWenchao Xia return NETWORK_ADDRESS_FAMILY_UNKNOWN; 79a589569fSWenchao Xia } 80a589569fSWenchao Xia 811856835dSDaniel P. Berrange /* 821856835dSDaniel P. Berrange * Matrix we're trying to apply 831856835dSDaniel P. Berrange * 841856835dSDaniel P. Berrange * ipv4 ipv6 family 851856835dSDaniel P. Berrange * - - PF_UNSPEC 861856835dSDaniel P. Berrange * - f PF_INET 871856835dSDaniel P. Berrange * - t PF_INET6 881856835dSDaniel P. Berrange * f - PF_INET6 891856835dSDaniel P. Berrange * f f <error> 901856835dSDaniel P. Berrange * f t PF_INET6 911856835dSDaniel P. Berrange * t - PF_INET 921856835dSDaniel P. Berrange * t f PF_INET 931856835dSDaniel P. Berrange * t t PF_INET6 941856835dSDaniel P. Berrange * 951856835dSDaniel P. Berrange * NB, this matrix is only about getting the neccessary results 961856835dSDaniel P. Berrange * from getaddrinfo(). Some of the cases require further work 971856835dSDaniel P. Berrange * after reading results from getaddrinfo in order to fully 981856835dSDaniel P. Berrange * apply the logic the end user wants. eg with the last case 991856835dSDaniel P. Berrange * ipv4=t + ipv6=t + PF_INET6, getaddrinfo alone can only 1001856835dSDaniel P. Berrange * guarantee the ipv6=t part of the request - we need more 1011856835dSDaniel P. Berrange * checks to provide ipv4=t part of the guarantee. This is 1021856835dSDaniel P. Berrange * outside scope of this method and not currently handled by 1031856835dSDaniel P. Berrange * callers at all. 1041856835dSDaniel P. Berrange */ 1051856835dSDaniel P. Berrange static int inet_ai_family_from_address(InetSocketAddress *addr, 1061856835dSDaniel P. Berrange Error **errp) 1071856835dSDaniel P. Berrange { 1081856835dSDaniel P. Berrange if (addr->has_ipv6 && addr->has_ipv4 && 1091856835dSDaniel P. Berrange !addr->ipv6 && !addr->ipv4) { 1101856835dSDaniel P. Berrange error_setg(errp, "Cannot disable IPv4 and IPv6 at same time"); 1111856835dSDaniel P. Berrange return PF_UNSPEC; 1121856835dSDaniel P. Berrange } 1131856835dSDaniel P. Berrange if ((addr->has_ipv6 && addr->ipv6) || (addr->has_ipv4 && !addr->ipv4)) { 1141856835dSDaniel P. Berrange return PF_INET6; 1151856835dSDaniel P. Berrange } 1161856835dSDaniel P. Berrange if ((addr->has_ipv4 && addr->ipv4) || (addr->has_ipv6 && !addr->ipv6)) { 1171856835dSDaniel P. Berrange return PF_INET; 1181856835dSDaniel P. Berrange } 1191856835dSDaniel P. Berrange return PF_UNSPEC; 1201856835dSDaniel P. Berrange } 1211856835dSDaniel P. Berrange 1221856835dSDaniel P. Berrange static int inet_listen_saddr(InetSocketAddress *saddr, 1231856835dSDaniel P. Berrange int port_offset, 1241856835dSDaniel P. Berrange bool update_addr, 1251856835dSDaniel P. Berrange Error **errp) 126baacf047SPaolo Bonzini { 127baacf047SPaolo Bonzini struct addrinfo ai,*res,*e; 128baacf047SPaolo Bonzini char port[33]; 129baacf047SPaolo Bonzini char uaddr[INET6_ADDRSTRLEN+1]; 130baacf047SPaolo Bonzini char uport[33]; 1311856835dSDaniel P. Berrange int slisten, rc, port_min, port_max, p; 1321856835dSDaniel P. Berrange Error *err = NULL; 133baacf047SPaolo Bonzini 134baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 1353de3d698SWolfgang Bumiller ai.ai_flags = AI_PASSIVE; 1361856835dSDaniel P. Berrange ai.ai_family = inet_ai_family_from_address(saddr, &err); 137baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 138baacf047SPaolo Bonzini 1391856835dSDaniel P. Berrange if (err) { 1401856835dSDaniel P. Berrange error_propagate(errp, err); 1411856835dSDaniel P. Berrange return -1; 1421856835dSDaniel P. Berrange } 1431856835dSDaniel P. Berrange 1441856835dSDaniel P. Berrange if (saddr->host == NULL) { 1450983f5e6SDaniel P. Berrange error_setg(errp, "host not specified"); 146baacf047SPaolo Bonzini return -1; 147baacf047SPaolo Bonzini } 1481856835dSDaniel P. Berrange if (saddr->port != NULL) { 1491856835dSDaniel P. Berrange pstrcpy(port, sizeof(port), saddr->port); 1500983f5e6SDaniel P. Berrange } else { 1510983f5e6SDaniel P. Berrange port[0] = '\0'; 1520983f5e6SDaniel P. Berrange } 153baacf047SPaolo Bonzini 154baacf047SPaolo Bonzini /* lookup */ 1558bc89127SGerd Hoffmann if (port_offset) { 1568bc89127SGerd Hoffmann unsigned long long baseport; 1570983f5e6SDaniel P. Berrange if (strlen(port) == 0) { 1580983f5e6SDaniel P. Berrange error_setg(errp, "port not specified"); 1590983f5e6SDaniel P. Berrange return -1; 1600983f5e6SDaniel P. Berrange } 1618bc89127SGerd Hoffmann if (parse_uint_full(port, &baseport, 10) < 0) { 1628bc89127SGerd Hoffmann error_setg(errp, "can't convert to a number: %s", port); 1638bc89127SGerd Hoffmann return -1; 1648bc89127SGerd Hoffmann } 1658bc89127SGerd Hoffmann if (baseport > 65535 || 1668bc89127SGerd Hoffmann baseport + port_offset > 65535) { 1678bc89127SGerd Hoffmann error_setg(errp, "port %s out of range", port); 1688bc89127SGerd Hoffmann return -1; 1698bc89127SGerd Hoffmann } 1708bc89127SGerd Hoffmann snprintf(port, sizeof(port), "%d", (int)baseport + port_offset); 1718bc89127SGerd Hoffmann } 1721856835dSDaniel P. Berrange rc = getaddrinfo(strlen(saddr->host) ? saddr->host : NULL, 1730983f5e6SDaniel P. Berrange strlen(port) ? port : NULL, &ai, &res); 174baacf047SPaolo Bonzini if (rc != 0) { 1751856835dSDaniel P. Berrange error_setg(errp, "address resolution failed for %s:%s: %s", 1761856835dSDaniel P. Berrange saddr->host, port, gai_strerror(rc)); 177baacf047SPaolo Bonzini return -1; 178baacf047SPaolo Bonzini } 179baacf047SPaolo Bonzini 180baacf047SPaolo Bonzini /* create socket + bind */ 181baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 182baacf047SPaolo Bonzini getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, 183baacf047SPaolo Bonzini uaddr,INET6_ADDRSTRLEN,uport,32, 184baacf047SPaolo Bonzini NI_NUMERICHOST | NI_NUMERICSERV); 185baacf047SPaolo Bonzini slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); 186baacf047SPaolo Bonzini if (slisten < 0) { 187baacf047SPaolo Bonzini if (!e->ai_next) { 188235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 189baacf047SPaolo Bonzini } 190baacf047SPaolo Bonzini continue; 191baacf047SPaolo Bonzini } 192baacf047SPaolo Bonzini 19304fd1c78SSebastian Ottlik socket_set_fast_reuse(slisten); 194baacf047SPaolo Bonzini #ifdef IPV6_V6ONLY 195baacf047SPaolo Bonzini if (e->ai_family == PF_INET6) { 196baacf047SPaolo Bonzini /* listen on both ipv4 and ipv6 */ 197f9b5426fSPeter Maydell const int off = 0; 1989957fc7fSStefan Weil qemu_setsockopt(slisten, IPPROTO_IPV6, IPV6_V6ONLY, &off, 199baacf047SPaolo Bonzini sizeof(off)); 200baacf047SPaolo Bonzini } 201baacf047SPaolo Bonzini #endif 202baacf047SPaolo Bonzini 203baacf047SPaolo Bonzini port_min = inet_getport(e); 2041856835dSDaniel P. Berrange port_max = saddr->has_to ? saddr->to + port_offset : port_min; 205baacf047SPaolo Bonzini for (p = port_min; p <= port_max; p++) { 206baacf047SPaolo Bonzini inet_setport(e, p); 207baacf047SPaolo Bonzini if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) { 208baacf047SPaolo Bonzini goto listen; 209baacf047SPaolo Bonzini } 210baacf047SPaolo Bonzini if (p == port_max) { 211baacf047SPaolo Bonzini if (!e->ai_next) { 212235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to bind socket"); 213baacf047SPaolo Bonzini } 214baacf047SPaolo Bonzini } 215baacf047SPaolo Bonzini } 216baacf047SPaolo Bonzini closesocket(slisten); 217baacf047SPaolo Bonzini } 218baacf047SPaolo Bonzini freeaddrinfo(res); 219baacf047SPaolo Bonzini return -1; 220baacf047SPaolo Bonzini 221baacf047SPaolo Bonzini listen: 222baacf047SPaolo Bonzini if (listen(slisten,1) != 0) { 223235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to listen on socket"); 224baacf047SPaolo Bonzini closesocket(slisten); 225baacf047SPaolo Bonzini freeaddrinfo(res); 226baacf047SPaolo Bonzini return -1; 227baacf047SPaolo Bonzini } 2281856835dSDaniel P. Berrange if (update_addr) { 2291856835dSDaniel P. Berrange g_free(saddr->host); 2301856835dSDaniel P. Berrange saddr->host = g_strdup(uaddr); 2311856835dSDaniel P. Berrange g_free(saddr->port); 2321856835dSDaniel P. Berrange saddr->port = g_strdup_printf("%d", 2331856835dSDaniel P. Berrange inet_getport(e) - port_offset); 2341856835dSDaniel P. Berrange saddr->has_ipv6 = saddr->ipv6 = e->ai_family == PF_INET6; 2351856835dSDaniel P. Berrange saddr->has_ipv4 = saddr->ipv4 = e->ai_family != PF_INET6; 2361856835dSDaniel P. Berrange } 237baacf047SPaolo Bonzini freeaddrinfo(res); 238baacf047SPaolo Bonzini return slisten; 239baacf047SPaolo Bonzini } 240baacf047SPaolo Bonzini 241baacf047SPaolo Bonzini #ifdef _WIN32 242baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 243baacf047SPaolo Bonzini ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) 244baacf047SPaolo Bonzini #else 245baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 246baacf047SPaolo Bonzini ((rc) == -EINPROGRESS) 247baacf047SPaolo Bonzini #endif 248baacf047SPaolo Bonzini 249baacf047SPaolo Bonzini /* Struct to store connect state for non blocking connect */ 250baacf047SPaolo Bonzini typedef struct ConnectState { 251baacf047SPaolo Bonzini int fd; 252baacf047SPaolo Bonzini struct addrinfo *addr_list; 253baacf047SPaolo Bonzini struct addrinfo *current_addr; 254baacf047SPaolo Bonzini NonBlockingConnectHandler *callback; 255baacf047SPaolo Bonzini void *opaque; 256baacf047SPaolo Bonzini } ConnectState; 257baacf047SPaolo Bonzini 258baacf047SPaolo Bonzini static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, 259baacf047SPaolo Bonzini ConnectState *connect_state, Error **errp); 260baacf047SPaolo Bonzini 261baacf047SPaolo Bonzini static void wait_for_connect(void *opaque) 262baacf047SPaolo Bonzini { 263baacf047SPaolo Bonzini ConnectState *s = opaque; 264baacf047SPaolo Bonzini int val = 0, rc = 0; 265baacf047SPaolo Bonzini socklen_t valsize = sizeof(val); 266baacf047SPaolo Bonzini bool in_progress; 26751795029SCorey Minyard Error *err = NULL; 268baacf047SPaolo Bonzini 26982e1cc4bSFam Zheng qemu_set_fd_handler(s->fd, NULL, NULL, NULL); 270baacf047SPaolo Bonzini 271baacf047SPaolo Bonzini do { 2729957fc7fSStefan Weil rc = qemu_getsockopt(s->fd, SOL_SOCKET, SO_ERROR, &val, &valsize); 273b16a44e1SDaniel P. Berrange } while (rc == -1 && errno == EINTR); 274baacf047SPaolo Bonzini 275baacf047SPaolo Bonzini /* update rc to contain error */ 276baacf047SPaolo Bonzini if (!rc && val) { 277baacf047SPaolo Bonzini rc = -1; 27851795029SCorey Minyard errno = val; 279baacf047SPaolo Bonzini } 280baacf047SPaolo Bonzini 281baacf047SPaolo Bonzini /* connect error */ 282baacf047SPaolo Bonzini if (rc < 0) { 28351795029SCorey Minyard error_setg_errno(&err, errno, "Error connecting to socket"); 284baacf047SPaolo Bonzini closesocket(s->fd); 285baacf047SPaolo Bonzini s->fd = rc; 286baacf047SPaolo Bonzini } 287baacf047SPaolo Bonzini 288baacf047SPaolo Bonzini /* try to connect to the next address on the list */ 289baacf047SPaolo Bonzini if (s->current_addr) { 290baacf047SPaolo Bonzini while (s->current_addr->ai_next != NULL && s->fd < 0) { 291baacf047SPaolo Bonzini s->current_addr = s->current_addr->ai_next; 292baacf047SPaolo Bonzini s->fd = inet_connect_addr(s->current_addr, &in_progress, s, NULL); 29351795029SCorey Minyard if (s->fd < 0) { 29451795029SCorey Minyard error_free(err); 29551795029SCorey Minyard err = NULL; 29651795029SCorey Minyard error_setg_errno(&err, errno, "Unable to start socket connect"); 29751795029SCorey Minyard } 298baacf047SPaolo Bonzini /* connect in progress */ 299baacf047SPaolo Bonzini if (in_progress) { 30051795029SCorey Minyard goto out; 301baacf047SPaolo Bonzini } 302baacf047SPaolo Bonzini } 303baacf047SPaolo Bonzini 304baacf047SPaolo Bonzini freeaddrinfo(s->addr_list); 305baacf047SPaolo Bonzini } 306baacf047SPaolo Bonzini 307baacf047SPaolo Bonzini if (s->callback) { 30851795029SCorey Minyard s->callback(s->fd, err, s->opaque); 309baacf047SPaolo Bonzini } 310baacf047SPaolo Bonzini g_free(s); 31151795029SCorey Minyard out: 31251795029SCorey Minyard error_free(err); 313baacf047SPaolo Bonzini } 314baacf047SPaolo Bonzini 315baacf047SPaolo Bonzini static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, 316baacf047SPaolo Bonzini ConnectState *connect_state, Error **errp) 317baacf047SPaolo Bonzini { 318baacf047SPaolo Bonzini int sock, rc; 319baacf047SPaolo Bonzini 320baacf047SPaolo Bonzini *in_progress = false; 321baacf047SPaolo Bonzini 322baacf047SPaolo Bonzini sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); 323baacf047SPaolo Bonzini if (sock < 0) { 324235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 325baacf047SPaolo Bonzini return -1; 326baacf047SPaolo Bonzini } 32704fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 328baacf047SPaolo Bonzini if (connect_state != NULL) { 329f9e8caccSStefan Hajnoczi qemu_set_nonblock(sock); 330baacf047SPaolo Bonzini } 331baacf047SPaolo Bonzini /* connect to peer */ 332baacf047SPaolo Bonzini do { 333baacf047SPaolo Bonzini rc = 0; 334baacf047SPaolo Bonzini if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { 335b16a44e1SDaniel P. Berrange rc = -errno; 336baacf047SPaolo Bonzini } 337baacf047SPaolo Bonzini } while (rc == -EINTR); 338baacf047SPaolo Bonzini 339baacf047SPaolo Bonzini if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { 340baacf047SPaolo Bonzini connect_state->fd = sock; 34182e1cc4bSFam Zheng qemu_set_fd_handler(sock, NULL, wait_for_connect, connect_state); 342baacf047SPaolo Bonzini *in_progress = true; 343baacf047SPaolo Bonzini } else if (rc < 0) { 344235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to connect socket"); 345baacf047SPaolo Bonzini closesocket(sock); 346baacf047SPaolo Bonzini return -1; 347baacf047SPaolo Bonzini } 348baacf047SPaolo Bonzini return sock; 349baacf047SPaolo Bonzini } 350baacf047SPaolo Bonzini 3512942e420SDaniel P. Berrange static struct addrinfo *inet_parse_connect_saddr(InetSocketAddress *saddr, 3522942e420SDaniel P. Berrange Error **errp) 353baacf047SPaolo Bonzini { 354baacf047SPaolo Bonzini struct addrinfo ai, *res; 355baacf047SPaolo Bonzini int rc; 3562942e420SDaniel P. Berrange Error *err = NULL; 357baacf047SPaolo Bonzini 358baacf047SPaolo Bonzini memset(&ai, 0, sizeof(ai)); 359baacf047SPaolo Bonzini 3603de3d698SWolfgang Bumiller ai.ai_flags = AI_CANONNAME | AI_V4MAPPED | AI_ADDRCONFIG; 3612942e420SDaniel P. Berrange ai.ai_family = inet_ai_family_from_address(saddr, &err); 362baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 363baacf047SPaolo Bonzini 3642942e420SDaniel P. Berrange if (err) { 3652942e420SDaniel P. Berrange error_propagate(errp, err); 3662942e420SDaniel P. Berrange return NULL; 3672942e420SDaniel P. Berrange } 3682942e420SDaniel P. Berrange 3692942e420SDaniel P. Berrange if (saddr->host == NULL || saddr->port == NULL) { 370baacf047SPaolo Bonzini error_setg(errp, "host and/or port not specified"); 371baacf047SPaolo Bonzini return NULL; 372baacf047SPaolo Bonzini } 373baacf047SPaolo Bonzini 374baacf047SPaolo Bonzini /* lookup */ 3752942e420SDaniel P. Berrange rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); 376baacf047SPaolo Bonzini if (rc != 0) { 3772942e420SDaniel P. Berrange error_setg(errp, "address resolution failed for %s:%s: %s", 3782942e420SDaniel P. Berrange saddr->host, saddr->port, gai_strerror(rc)); 379baacf047SPaolo Bonzini return NULL; 380baacf047SPaolo Bonzini } 381baacf047SPaolo Bonzini return res; 382baacf047SPaolo Bonzini } 383baacf047SPaolo Bonzini 384baacf047SPaolo Bonzini /** 385baacf047SPaolo Bonzini * Create a socket and connect it to an address. 386baacf047SPaolo Bonzini * 3872942e420SDaniel P. Berrange * @saddr: Inet socket address specification 388baacf047SPaolo Bonzini * @errp: set on error 389baacf047SPaolo Bonzini * @callback: callback function for non-blocking connect 390baacf047SPaolo Bonzini * @opaque: opaque for callback function 391baacf047SPaolo Bonzini * 392baacf047SPaolo Bonzini * Returns: -1 on error, file descriptor on success. 393baacf047SPaolo Bonzini * 394baacf047SPaolo Bonzini * If @callback is non-null, the connect is non-blocking. If this 395baacf047SPaolo Bonzini * function succeeds, callback will be called when the connection 396baacf047SPaolo Bonzini * completes, with the file descriptor on success, or -1 on error. 397baacf047SPaolo Bonzini */ 3982942e420SDaniel P. Berrange static int inet_connect_saddr(InetSocketAddress *saddr, Error **errp, 399baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 400baacf047SPaolo Bonzini { 4013f9286b7SMarkus Armbruster Error *local_err = NULL; 402baacf047SPaolo Bonzini struct addrinfo *res, *e; 403baacf047SPaolo Bonzini int sock = -1; 404baacf047SPaolo Bonzini bool in_progress; 405baacf047SPaolo Bonzini ConnectState *connect_state = NULL; 406baacf047SPaolo Bonzini 4072942e420SDaniel P. Berrange res = inet_parse_connect_saddr(saddr, errp); 408baacf047SPaolo Bonzini if (!res) { 409baacf047SPaolo Bonzini return -1; 410baacf047SPaolo Bonzini } 411baacf047SPaolo Bonzini 412baacf047SPaolo Bonzini if (callback != NULL) { 413baacf047SPaolo Bonzini connect_state = g_malloc0(sizeof(*connect_state)); 414baacf047SPaolo Bonzini connect_state->addr_list = res; 415baacf047SPaolo Bonzini connect_state->callback = callback; 416baacf047SPaolo Bonzini connect_state->opaque = opaque; 417baacf047SPaolo Bonzini } 418baacf047SPaolo Bonzini 419baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 4203f9286b7SMarkus Armbruster error_free(local_err); 4213f9286b7SMarkus Armbruster local_err = NULL; 422baacf047SPaolo Bonzini if (connect_state != NULL) { 423baacf047SPaolo Bonzini connect_state->current_addr = e; 424baacf047SPaolo Bonzini } 4253f9286b7SMarkus Armbruster sock = inet_connect_addr(e, &in_progress, connect_state, &local_err); 4263f9286b7SMarkus Armbruster if (sock >= 0) { 427baacf047SPaolo Bonzini break; 428baacf047SPaolo Bonzini } 429baacf047SPaolo Bonzini } 4303f9286b7SMarkus Armbruster 4313f9286b7SMarkus Armbruster if (sock < 0) { 4323f9286b7SMarkus Armbruster error_propagate(errp, local_err); 4333f9286b7SMarkus Armbruster } else if (in_progress) { 4343f9286b7SMarkus Armbruster /* wait_for_connect() will do the rest */ 4353f9286b7SMarkus Armbruster return sock; 4363f9286b7SMarkus Armbruster } else { 4373f9286b7SMarkus Armbruster if (callback) { 43851795029SCorey Minyard callback(sock, NULL, opaque); 4393f9286b7SMarkus Armbruster } 4403f9286b7SMarkus Armbruster } 441baacf047SPaolo Bonzini g_free(connect_state); 442baacf047SPaolo Bonzini freeaddrinfo(res); 443baacf047SPaolo Bonzini return sock; 444baacf047SPaolo Bonzini } 445baacf047SPaolo Bonzini 4468b39910eSDaniel P. Berrange static int inet_dgram_saddr(InetSocketAddress *sraddr, 4478b39910eSDaniel P. Berrange InetSocketAddress *sladdr, 4488b39910eSDaniel P. Berrange Error **errp) 449baacf047SPaolo Bonzini { 450baacf047SPaolo Bonzini struct addrinfo ai, *peer = NULL, *local = NULL; 451baacf047SPaolo Bonzini const char *addr; 452baacf047SPaolo Bonzini const char *port; 453baacf047SPaolo Bonzini int sock = -1, rc; 4548b39910eSDaniel P. Berrange Error *err = NULL; 455baacf047SPaolo Bonzini 456baacf047SPaolo Bonzini /* lookup peer addr */ 457baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 4583de3d698SWolfgang Bumiller ai.ai_flags = AI_CANONNAME | AI_V4MAPPED | AI_ADDRCONFIG; 4598b39910eSDaniel P. Berrange ai.ai_family = inet_ai_family_from_address(sraddr, &err); 460baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 461baacf047SPaolo Bonzini 4628b39910eSDaniel P. Berrange if (err) { 4638b39910eSDaniel P. Berrange error_propagate(errp, err); 46458c652c0SPaolo Bonzini goto err; 4658b39910eSDaniel P. Berrange } 4668b39910eSDaniel P. Berrange 4678b39910eSDaniel P. Berrange addr = sraddr->host; 4688b39910eSDaniel P. Berrange port = sraddr->port; 469baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 470baacf047SPaolo Bonzini addr = "localhost"; 471baacf047SPaolo Bonzini } 472baacf047SPaolo Bonzini if (port == NULL || strlen(port) == 0) { 473baacf047SPaolo Bonzini error_setg(errp, "remote port not specified"); 47458c652c0SPaolo Bonzini goto err; 475baacf047SPaolo Bonzini } 476baacf047SPaolo Bonzini 477baacf047SPaolo Bonzini if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) { 478baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 479baacf047SPaolo Bonzini gai_strerror(rc)); 48058c652c0SPaolo Bonzini goto err; 481baacf047SPaolo Bonzini } 482baacf047SPaolo Bonzini 483baacf047SPaolo Bonzini /* lookup local addr */ 484baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 485baacf047SPaolo Bonzini ai.ai_flags = AI_PASSIVE; 486baacf047SPaolo Bonzini ai.ai_family = peer->ai_family; 487baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 488baacf047SPaolo Bonzini 4898b39910eSDaniel P. Berrange if (sladdr) { 4908b39910eSDaniel P. Berrange addr = sladdr->host; 4918b39910eSDaniel P. Berrange port = sladdr->port; 492baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 493baacf047SPaolo Bonzini addr = NULL; 494baacf047SPaolo Bonzini } 4958b39910eSDaniel P. Berrange if (!port || strlen(port) == 0) { 496baacf047SPaolo Bonzini port = "0"; 4978b39910eSDaniel P. Berrange } 4988b39910eSDaniel P. Berrange } else { 4998b39910eSDaniel P. Berrange addr = NULL; 5008b39910eSDaniel P. Berrange port = "0"; 5018b39910eSDaniel P. Berrange } 502baacf047SPaolo Bonzini 503baacf047SPaolo Bonzini if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) { 504baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 505baacf047SPaolo Bonzini gai_strerror(rc)); 506baacf047SPaolo Bonzini goto err; 507baacf047SPaolo Bonzini } 508baacf047SPaolo Bonzini 509baacf047SPaolo Bonzini /* create socket */ 510baacf047SPaolo Bonzini sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); 511baacf047SPaolo Bonzini if (sock < 0) { 512235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 513baacf047SPaolo Bonzini goto err; 514baacf047SPaolo Bonzini } 51504fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 516baacf047SPaolo Bonzini 517baacf047SPaolo Bonzini /* bind socket */ 518baacf047SPaolo Bonzini if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { 519235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to bind socket"); 520baacf047SPaolo Bonzini goto err; 521baacf047SPaolo Bonzini } 522baacf047SPaolo Bonzini 523baacf047SPaolo Bonzini /* connect to peer */ 524baacf047SPaolo Bonzini if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { 525235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to connect socket"); 526baacf047SPaolo Bonzini goto err; 527baacf047SPaolo Bonzini } 528baacf047SPaolo Bonzini 529baacf047SPaolo Bonzini freeaddrinfo(local); 530baacf047SPaolo Bonzini freeaddrinfo(peer); 531baacf047SPaolo Bonzini return sock; 532baacf047SPaolo Bonzini 533baacf047SPaolo Bonzini err: 534baacf047SPaolo Bonzini if (-1 != sock) 535baacf047SPaolo Bonzini closesocket(sock); 536baacf047SPaolo Bonzini if (local) 537baacf047SPaolo Bonzini freeaddrinfo(local); 538baacf047SPaolo Bonzini if (peer) 539baacf047SPaolo Bonzini freeaddrinfo(peer); 540baacf047SPaolo Bonzini return -1; 541baacf047SPaolo Bonzini } 542baacf047SPaolo Bonzini 543baacf047SPaolo Bonzini /* compatibility wrapper */ 544f17c90beSKevin Wolf InetSocketAddress *inet_parse(const char *str, Error **errp) 545baacf047SPaolo Bonzini { 546baacf047SPaolo Bonzini InetSocketAddress *addr; 547baacf047SPaolo Bonzini const char *optstr, *h; 54855a10996SKevin Wolf char host[65]; 549baacf047SPaolo Bonzini char port[33]; 550baacf047SPaolo Bonzini int to; 551baacf047SPaolo Bonzini int pos; 552baacf047SPaolo Bonzini 553baacf047SPaolo Bonzini addr = g_new0(InetSocketAddress, 1); 554baacf047SPaolo Bonzini 555baacf047SPaolo Bonzini /* parse address */ 556baacf047SPaolo Bonzini if (str[0] == ':') { 557baacf047SPaolo Bonzini /* no host given */ 558baacf047SPaolo Bonzini host[0] = '\0'; 559baacf047SPaolo Bonzini if (1 != sscanf(str, ":%32[^,]%n", port, &pos)) { 560baacf047SPaolo Bonzini error_setg(errp, "error parsing port in address '%s'", str); 561baacf047SPaolo Bonzini goto fail; 562baacf047SPaolo Bonzini } 563baacf047SPaolo Bonzini } else if (str[0] == '[') { 564baacf047SPaolo Bonzini /* IPv6 addr */ 565baacf047SPaolo Bonzini if (2 != sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos)) { 566baacf047SPaolo Bonzini error_setg(errp, "error parsing IPv6 address '%s'", str); 567baacf047SPaolo Bonzini goto fail; 568baacf047SPaolo Bonzini } 569baacf047SPaolo Bonzini addr->ipv6 = addr->has_ipv6 = true; 570baacf047SPaolo Bonzini } else { 571391b7b97SJán Tomko /* hostname or IPv4 addr */ 572baacf047SPaolo Bonzini if (2 != sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos)) { 573baacf047SPaolo Bonzini error_setg(errp, "error parsing address '%s'", str); 574baacf047SPaolo Bonzini goto fail; 575baacf047SPaolo Bonzini } 576391b7b97SJán Tomko if (host[strspn(host, "0123456789.")] == '\0') { 577391b7b97SJán Tomko addr->ipv4 = addr->has_ipv4 = true; 578391b7b97SJán Tomko } 579baacf047SPaolo Bonzini } 580baacf047SPaolo Bonzini 581baacf047SPaolo Bonzini addr->host = g_strdup(host); 582baacf047SPaolo Bonzini addr->port = g_strdup(port); 583baacf047SPaolo Bonzini 584baacf047SPaolo Bonzini /* parse options */ 585baacf047SPaolo Bonzini optstr = str + pos; 586baacf047SPaolo Bonzini h = strstr(optstr, ",to="); 587baacf047SPaolo Bonzini if (h) { 588baacf047SPaolo Bonzini h += 4; 589baacf047SPaolo Bonzini if (sscanf(h, "%d%n", &to, &pos) != 1 || 590baacf047SPaolo Bonzini (h[pos] != '\0' && h[pos] != ',')) { 591baacf047SPaolo Bonzini error_setg(errp, "error parsing to= argument"); 592baacf047SPaolo Bonzini goto fail; 593baacf047SPaolo Bonzini } 594baacf047SPaolo Bonzini addr->has_to = true; 595baacf047SPaolo Bonzini addr->to = to; 596baacf047SPaolo Bonzini } 597baacf047SPaolo Bonzini if (strstr(optstr, ",ipv4")) { 598baacf047SPaolo Bonzini addr->ipv4 = addr->has_ipv4 = true; 599baacf047SPaolo Bonzini } 600baacf047SPaolo Bonzini if (strstr(optstr, ",ipv6")) { 601baacf047SPaolo Bonzini addr->ipv6 = addr->has_ipv6 = true; 602baacf047SPaolo Bonzini } 603baacf047SPaolo Bonzini return addr; 604baacf047SPaolo Bonzini 605baacf047SPaolo Bonzini fail: 606baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 607baacf047SPaolo Bonzini return NULL; 608baacf047SPaolo Bonzini } 609baacf047SPaolo Bonzini 610baacf047SPaolo Bonzini int inet_listen(const char *str, char *ostr, int olen, 611baacf047SPaolo Bonzini int socktype, int port_offset, Error **errp) 612baacf047SPaolo Bonzini { 613baacf047SPaolo Bonzini char *optstr; 614baacf047SPaolo Bonzini int sock = -1; 615baacf047SPaolo Bonzini InetSocketAddress *addr; 616baacf047SPaolo Bonzini 617baacf047SPaolo Bonzini addr = inet_parse(str, errp); 618baacf047SPaolo Bonzini if (addr != NULL) { 6191856835dSDaniel P. Berrange sock = inet_listen_saddr(addr, port_offset, true, errp); 620baacf047SPaolo Bonzini if (sock != -1 && ostr) { 621baacf047SPaolo Bonzini optstr = strchr(str, ','); 6221856835dSDaniel P. Berrange if (addr->ipv6) { 623baacf047SPaolo Bonzini snprintf(ostr, olen, "[%s]:%s%s", 6241856835dSDaniel P. Berrange addr->host, 6251856835dSDaniel P. Berrange addr->port, 626baacf047SPaolo Bonzini optstr ? optstr : ""); 627baacf047SPaolo Bonzini } else { 628baacf047SPaolo Bonzini snprintf(ostr, olen, "%s:%s%s", 6291856835dSDaniel P. Berrange addr->host, 6301856835dSDaniel P. Berrange addr->port, 631baacf047SPaolo Bonzini optstr ? optstr : ""); 632baacf047SPaolo Bonzini } 633baacf047SPaolo Bonzini } 6341856835dSDaniel P. Berrange qapi_free_InetSocketAddress(addr); 635baacf047SPaolo Bonzini } 636baacf047SPaolo Bonzini return sock; 637baacf047SPaolo Bonzini } 638baacf047SPaolo Bonzini 639baacf047SPaolo Bonzini /** 640baacf047SPaolo Bonzini * Create a blocking socket and connect it to an address. 641baacf047SPaolo Bonzini * 642baacf047SPaolo Bonzini * @str: address string 643baacf047SPaolo Bonzini * @errp: set in case of an error 644baacf047SPaolo Bonzini * 645baacf047SPaolo Bonzini * Returns -1 in case of error, file descriptor on success 646baacf047SPaolo Bonzini **/ 647baacf047SPaolo Bonzini int inet_connect(const char *str, Error **errp) 648baacf047SPaolo Bonzini { 649baacf047SPaolo Bonzini int sock = -1; 650baacf047SPaolo Bonzini InetSocketAddress *addr; 651baacf047SPaolo Bonzini 652baacf047SPaolo Bonzini addr = inet_parse(str, errp); 653baacf047SPaolo Bonzini if (addr != NULL) { 6542942e420SDaniel P. Berrange sock = inet_connect_saddr(addr, errp, NULL, NULL); 655baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 656baacf047SPaolo Bonzini } 657baacf047SPaolo Bonzini return sock; 658baacf047SPaolo Bonzini } 659baacf047SPaolo Bonzini 660baacf047SPaolo Bonzini /** 661baacf047SPaolo Bonzini * Create a non-blocking socket and connect it to an address. 662baacf047SPaolo Bonzini * Calls the callback function with fd in case of success or -1 in case of 663baacf047SPaolo Bonzini * error. 664baacf047SPaolo Bonzini * 665baacf047SPaolo Bonzini * @str: address string 666baacf047SPaolo Bonzini * @callback: callback function that is called when connect completes, 667baacf047SPaolo Bonzini * cannot be NULL. 668baacf047SPaolo Bonzini * @opaque: opaque for callback function 669baacf047SPaolo Bonzini * @errp: set in case of an error 670baacf047SPaolo Bonzini * 671baacf047SPaolo Bonzini * Returns: -1 on immediate error, file descriptor on success. 672baacf047SPaolo Bonzini **/ 673baacf047SPaolo Bonzini int inet_nonblocking_connect(const char *str, 674baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, 675baacf047SPaolo Bonzini void *opaque, Error **errp) 676baacf047SPaolo Bonzini { 677baacf047SPaolo Bonzini int sock = -1; 678baacf047SPaolo Bonzini InetSocketAddress *addr; 679baacf047SPaolo Bonzini 680baacf047SPaolo Bonzini g_assert(callback != NULL); 681baacf047SPaolo Bonzini 682baacf047SPaolo Bonzini addr = inet_parse(str, errp); 683baacf047SPaolo Bonzini if (addr != NULL) { 6842942e420SDaniel P. Berrange sock = inet_connect_saddr(addr, errp, callback, opaque); 685baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 686baacf047SPaolo Bonzini } 687baacf047SPaolo Bonzini return sock; 688baacf047SPaolo Bonzini } 689baacf047SPaolo Bonzini 690baacf047SPaolo Bonzini #ifndef _WIN32 691baacf047SPaolo Bonzini 6921856835dSDaniel P. Berrange static int unix_listen_saddr(UnixSocketAddress *saddr, 6931856835dSDaniel P. Berrange bool update_addr, 6941856835dSDaniel P. Berrange Error **errp) 695baacf047SPaolo Bonzini { 696baacf047SPaolo Bonzini struct sockaddr_un un; 697baacf047SPaolo Bonzini int sock, fd; 698baacf047SPaolo Bonzini 699baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 700baacf047SPaolo Bonzini if (sock < 0) { 701b658c53dSPaolo Bonzini error_setg_errno(errp, errno, "Failed to create Unix socket"); 702baacf047SPaolo Bonzini return -1; 703baacf047SPaolo Bonzini } 704baacf047SPaolo Bonzini 705baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 706baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 7071856835dSDaniel P. Berrange if (saddr->path && strlen(saddr->path)) { 7081856835dSDaniel P. Berrange snprintf(un.sun_path, sizeof(un.sun_path), "%s", saddr->path); 709baacf047SPaolo Bonzini } else { 710b658c53dSPaolo Bonzini const char *tmpdir = getenv("TMPDIR"); 711b658c53dSPaolo Bonzini tmpdir = tmpdir ? tmpdir : "/tmp"; 712b658c53dSPaolo Bonzini if (snprintf(un.sun_path, sizeof(un.sun_path), "%s/qemu-socket-XXXXXX", 713b658c53dSPaolo Bonzini tmpdir) >= sizeof(un.sun_path)) { 714b658c53dSPaolo Bonzini error_setg_errno(errp, errno, 715b658c53dSPaolo Bonzini "TMPDIR environment variable (%s) too large", tmpdir); 716b658c53dSPaolo Bonzini goto err; 717b658c53dSPaolo Bonzini } 718b658c53dSPaolo Bonzini 719baacf047SPaolo Bonzini /* 720baacf047SPaolo Bonzini * This dummy fd usage silences the mktemp() unsecure warning. 721baacf047SPaolo Bonzini * Using mkstemp() doesn't make things more secure here 722baacf047SPaolo Bonzini * though. bind() complains about existing files, so we have 723baacf047SPaolo Bonzini * to unlink first and thus re-open the race window. The 724baacf047SPaolo Bonzini * worst case possible is bind() failing, i.e. a DoS attack. 725baacf047SPaolo Bonzini */ 726b658c53dSPaolo Bonzini fd = mkstemp(un.sun_path); 727b658c53dSPaolo Bonzini if (fd < 0) { 728b658c53dSPaolo Bonzini error_setg_errno(errp, errno, 729b658c53dSPaolo Bonzini "Failed to make a temporary socket name in %s", tmpdir); 730b658c53dSPaolo Bonzini goto err; 731b658c53dSPaolo Bonzini } 732b658c53dSPaolo Bonzini close(fd); 7331856835dSDaniel P. Berrange if (update_addr) { 7341856835dSDaniel P. Berrange g_free(saddr->path); 7351856835dSDaniel P. Berrange saddr->path = g_strdup(un.sun_path); 7361856835dSDaniel P. Berrange } 737baacf047SPaolo Bonzini } 738baacf047SPaolo Bonzini 739a2f31f18SPaolo Bonzini if (unlink(un.sun_path) < 0 && errno != ENOENT) { 7400ef705a2SCole Robinson error_setg_errno(errp, errno, 7410ef705a2SCole Robinson "Failed to unlink socket %s", un.sun_path); 7420ef705a2SCole Robinson goto err; 7430ef705a2SCole Robinson } 744baacf047SPaolo Bonzini if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { 745b658c53dSPaolo Bonzini error_setg_errno(errp, errno, "Failed to bind socket to %s", un.sun_path); 746baacf047SPaolo Bonzini goto err; 747baacf047SPaolo Bonzini } 748baacf047SPaolo Bonzini if (listen(sock, 1) < 0) { 749235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to listen on socket"); 750baacf047SPaolo Bonzini goto err; 751baacf047SPaolo Bonzini } 752baacf047SPaolo Bonzini 753baacf047SPaolo Bonzini return sock; 754baacf047SPaolo Bonzini 755baacf047SPaolo Bonzini err: 756baacf047SPaolo Bonzini closesocket(sock); 757baacf047SPaolo Bonzini return -1; 758baacf047SPaolo Bonzini } 759baacf047SPaolo Bonzini 7602942e420SDaniel P. Berrange static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp, 761baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 762baacf047SPaolo Bonzini { 763baacf047SPaolo Bonzini struct sockaddr_un un; 764baacf047SPaolo Bonzini ConnectState *connect_state = NULL; 765baacf047SPaolo Bonzini int sock, rc; 766baacf047SPaolo Bonzini 7672942e420SDaniel P. Berrange if (saddr->path == NULL) { 768312fd5f2SMarkus Armbruster error_setg(errp, "unix connect: no path specified"); 769baacf047SPaolo Bonzini return -1; 770baacf047SPaolo Bonzini } 771baacf047SPaolo Bonzini 772baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 773baacf047SPaolo Bonzini if (sock < 0) { 774235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 775baacf047SPaolo Bonzini return -1; 776baacf047SPaolo Bonzini } 777baacf047SPaolo Bonzini if (callback != NULL) { 778baacf047SPaolo Bonzini connect_state = g_malloc0(sizeof(*connect_state)); 779baacf047SPaolo Bonzini connect_state->callback = callback; 780baacf047SPaolo Bonzini connect_state->opaque = opaque; 781f9e8caccSStefan Hajnoczi qemu_set_nonblock(sock); 782baacf047SPaolo Bonzini } 783baacf047SPaolo Bonzini 784baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 785baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 7862942e420SDaniel P. Berrange snprintf(un.sun_path, sizeof(un.sun_path), "%s", saddr->path); 787baacf047SPaolo Bonzini 788baacf047SPaolo Bonzini /* connect to peer */ 789baacf047SPaolo Bonzini do { 790baacf047SPaolo Bonzini rc = 0; 791baacf047SPaolo Bonzini if (connect(sock, (struct sockaddr *) &un, sizeof(un)) < 0) { 792b16a44e1SDaniel P. Berrange rc = -errno; 793baacf047SPaolo Bonzini } 794baacf047SPaolo Bonzini } while (rc == -EINTR); 795baacf047SPaolo Bonzini 796baacf047SPaolo Bonzini if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { 797baacf047SPaolo Bonzini connect_state->fd = sock; 79882e1cc4bSFam Zheng qemu_set_fd_handler(sock, NULL, wait_for_connect, connect_state); 799baacf047SPaolo Bonzini return sock; 800baacf047SPaolo Bonzini } else if (rc >= 0) { 801baacf047SPaolo Bonzini /* non blocking socket immediate success, call callback */ 802baacf047SPaolo Bonzini if (callback != NULL) { 80351795029SCorey Minyard callback(sock, NULL, opaque); 804baacf047SPaolo Bonzini } 805baacf047SPaolo Bonzini } 806baacf047SPaolo Bonzini 807baacf047SPaolo Bonzini if (rc < 0) { 808235256a2SMarkus Armbruster error_setg_errno(errp, -rc, "Failed to connect socket"); 809baacf047SPaolo Bonzini close(sock); 810baacf047SPaolo Bonzini sock = -1; 811baacf047SPaolo Bonzini } 812baacf047SPaolo Bonzini 813baacf047SPaolo Bonzini g_free(connect_state); 814baacf047SPaolo Bonzini return sock; 815baacf047SPaolo Bonzini } 816baacf047SPaolo Bonzini 817baacf047SPaolo Bonzini #else 818baacf047SPaolo Bonzini 8191856835dSDaniel P. Berrange static int unix_listen_saddr(UnixSocketAddress *saddr, 8201856835dSDaniel P. Berrange bool update_addr, 8211856835dSDaniel P. Berrange Error **errp) 822baacf047SPaolo Bonzini { 823baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 824baacf047SPaolo Bonzini errno = ENOTSUP; 825baacf047SPaolo Bonzini return -1; 826baacf047SPaolo Bonzini } 827baacf047SPaolo Bonzini 8282942e420SDaniel P. Berrange static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp, 829baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 830baacf047SPaolo Bonzini { 831baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 832baacf047SPaolo Bonzini errno = ENOTSUP; 833baacf047SPaolo Bonzini return -1; 834baacf047SPaolo Bonzini } 835baacf047SPaolo Bonzini #endif 836baacf047SPaolo Bonzini 837baacf047SPaolo Bonzini /* compatibility wrapper */ 838baacf047SPaolo Bonzini int unix_listen(const char *str, char *ostr, int olen, Error **errp) 839baacf047SPaolo Bonzini { 840baacf047SPaolo Bonzini char *path, *optstr; 841baacf047SPaolo Bonzini int sock, len; 8421856835dSDaniel P. Berrange UnixSocketAddress *saddr; 843baacf047SPaolo Bonzini 8441856835dSDaniel P. Berrange saddr = g_new0(UnixSocketAddress, 1); 845baacf047SPaolo Bonzini 846baacf047SPaolo Bonzini optstr = strchr(str, ','); 847baacf047SPaolo Bonzini if (optstr) { 848baacf047SPaolo Bonzini len = optstr - str; 849baacf047SPaolo Bonzini if (len) { 850baacf047SPaolo Bonzini path = g_malloc(len+1); 851baacf047SPaolo Bonzini snprintf(path, len+1, "%.*s", len, str); 8521856835dSDaniel P. Berrange saddr->path = path; 853baacf047SPaolo Bonzini } 854baacf047SPaolo Bonzini } else { 8551856835dSDaniel P. Berrange saddr->path = g_strdup(str); 856baacf047SPaolo Bonzini } 857baacf047SPaolo Bonzini 8581856835dSDaniel P. Berrange sock = unix_listen_saddr(saddr, true, errp); 859baacf047SPaolo Bonzini 860baacf047SPaolo Bonzini if (sock != -1 && ostr) 8611856835dSDaniel P. Berrange snprintf(ostr, olen, "%s%s", saddr->path, optstr ? optstr : ""); 8621856835dSDaniel P. Berrange qapi_free_UnixSocketAddress(saddr); 863baacf047SPaolo Bonzini return sock; 864baacf047SPaolo Bonzini } 865baacf047SPaolo Bonzini 866baacf047SPaolo Bonzini int unix_connect(const char *path, Error **errp) 867baacf047SPaolo Bonzini { 8682942e420SDaniel P. Berrange UnixSocketAddress *saddr; 869baacf047SPaolo Bonzini int sock; 870baacf047SPaolo Bonzini 8712942e420SDaniel P. Berrange saddr = g_new0(UnixSocketAddress, 1); 8722942e420SDaniel P. Berrange saddr->path = g_strdup(path); 8732942e420SDaniel P. Berrange sock = unix_connect_saddr(saddr, errp, NULL, NULL); 8742942e420SDaniel P. Berrange qapi_free_UnixSocketAddress(saddr); 875baacf047SPaolo Bonzini return sock; 876baacf047SPaolo Bonzini } 877baacf047SPaolo Bonzini 878baacf047SPaolo Bonzini 879baacf047SPaolo Bonzini int unix_nonblocking_connect(const char *path, 880baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, 881baacf047SPaolo Bonzini void *opaque, Error **errp) 882baacf047SPaolo Bonzini { 8832942e420SDaniel P. Berrange UnixSocketAddress *saddr; 884baacf047SPaolo Bonzini int sock = -1; 885baacf047SPaolo Bonzini 886baacf047SPaolo Bonzini g_assert(callback != NULL); 887baacf047SPaolo Bonzini 8882942e420SDaniel P. Berrange saddr = g_new0(UnixSocketAddress, 1); 8892942e420SDaniel P. Berrange saddr->path = g_strdup(path); 8902942e420SDaniel P. Berrange sock = unix_connect_saddr(saddr, errp, callback, opaque); 8912942e420SDaniel P. Berrange qapi_free_UnixSocketAddress(saddr); 892baacf047SPaolo Bonzini return sock; 893baacf047SPaolo Bonzini } 894baacf047SPaolo Bonzini 895baacf047SPaolo Bonzini SocketAddress *socket_parse(const char *str, Error **errp) 896baacf047SPaolo Bonzini { 897afde3f8bSGerd Hoffmann SocketAddress *addr; 898baacf047SPaolo Bonzini 899afde3f8bSGerd Hoffmann addr = g_new0(SocketAddress, 1); 900baacf047SPaolo Bonzini if (strstart(str, "unix:", NULL)) { 901baacf047SPaolo Bonzini if (str[5] == '\0') { 902312fd5f2SMarkus Armbruster error_setg(errp, "invalid Unix socket address"); 903baacf047SPaolo Bonzini goto fail; 904baacf047SPaolo Bonzini } else { 9052d32addaSEric Blake addr->type = SOCKET_ADDRESS_KIND_UNIX; 90632bafa8fSEric Blake addr->u.q_unix.data = g_new(UnixSocketAddress, 1); 90732bafa8fSEric Blake addr->u.q_unix.data->path = g_strdup(str + 5); 908baacf047SPaolo Bonzini } 909baacf047SPaolo Bonzini } else if (strstart(str, "fd:", NULL)) { 910baacf047SPaolo Bonzini if (str[3] == '\0') { 911312fd5f2SMarkus Armbruster error_setg(errp, "invalid file descriptor address"); 912baacf047SPaolo Bonzini goto fail; 913baacf047SPaolo Bonzini } else { 9142d32addaSEric Blake addr->type = SOCKET_ADDRESS_KIND_FD; 91532bafa8fSEric Blake addr->u.fd.data = g_new(String, 1); 91632bafa8fSEric Blake addr->u.fd.data->str = g_strdup(str + 3); 917baacf047SPaolo Bonzini } 918baacf047SPaolo Bonzini } else { 9192d32addaSEric Blake addr->type = SOCKET_ADDRESS_KIND_INET; 92032bafa8fSEric Blake addr->u.inet.data = inet_parse(str, errp); 92132bafa8fSEric Blake if (addr->u.inet.data == NULL) { 922baacf047SPaolo Bonzini goto fail; 923baacf047SPaolo Bonzini } 924baacf047SPaolo Bonzini } 925baacf047SPaolo Bonzini return addr; 926baacf047SPaolo Bonzini 927baacf047SPaolo Bonzini fail: 928baacf047SPaolo Bonzini qapi_free_SocketAddress(addr); 929baacf047SPaolo Bonzini return NULL; 930baacf047SPaolo Bonzini } 931baacf047SPaolo Bonzini 932baacf047SPaolo Bonzini int socket_connect(SocketAddress *addr, Error **errp, 933baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 934baacf047SPaolo Bonzini { 935baacf047SPaolo Bonzini int fd; 936baacf047SPaolo Bonzini 9372d32addaSEric Blake switch (addr->type) { 938baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_INET: 93932bafa8fSEric Blake fd = inet_connect_saddr(addr->u.inet.data, errp, callback, opaque); 940baacf047SPaolo Bonzini break; 941baacf047SPaolo Bonzini 942baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_UNIX: 94332bafa8fSEric Blake fd = unix_connect_saddr(addr->u.q_unix.data, errp, callback, opaque); 944baacf047SPaolo Bonzini break; 945baacf047SPaolo Bonzini 946baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_FD: 94732bafa8fSEric Blake fd = monitor_get_fd(cur_mon, addr->u.fd.data->str, errp); 948d1ec72a4SGerd Hoffmann if (fd >= 0 && callback) { 9491a751ebfSStefan Hajnoczi qemu_set_nonblock(fd); 95051795029SCorey Minyard callback(fd, NULL, opaque); 951baacf047SPaolo Bonzini } 952baacf047SPaolo Bonzini break; 953baacf047SPaolo Bonzini 954baacf047SPaolo Bonzini default: 955baacf047SPaolo Bonzini abort(); 956baacf047SPaolo Bonzini } 957baacf047SPaolo Bonzini return fd; 958baacf047SPaolo Bonzini } 959baacf047SPaolo Bonzini 960baacf047SPaolo Bonzini int socket_listen(SocketAddress *addr, Error **errp) 961baacf047SPaolo Bonzini { 962baacf047SPaolo Bonzini int fd; 963baacf047SPaolo Bonzini 9642d32addaSEric Blake switch (addr->type) { 965baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_INET: 96632bafa8fSEric Blake fd = inet_listen_saddr(addr->u.inet.data, 0, false, errp); 967baacf047SPaolo Bonzini break; 968baacf047SPaolo Bonzini 969baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_UNIX: 97032bafa8fSEric Blake fd = unix_listen_saddr(addr->u.q_unix.data, false, errp); 971baacf047SPaolo Bonzini break; 972baacf047SPaolo Bonzini 973baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_FD: 97432bafa8fSEric Blake fd = monitor_get_fd(cur_mon, addr->u.fd.data->str, errp); 975baacf047SPaolo Bonzini break; 976baacf047SPaolo Bonzini 977baacf047SPaolo Bonzini default: 978baacf047SPaolo Bonzini abort(); 979baacf047SPaolo Bonzini } 980baacf047SPaolo Bonzini return fd; 981baacf047SPaolo Bonzini } 982baacf047SPaolo Bonzini 9833ecc059dSGerd Hoffmann int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) 9843ecc059dSGerd Hoffmann { 9853ecc059dSGerd Hoffmann int fd; 9863ecc059dSGerd Hoffmann 9872d32addaSEric Blake switch (remote->type) { 9883ecc059dSGerd Hoffmann case SOCKET_ADDRESS_KIND_INET: 98932bafa8fSEric Blake fd = inet_dgram_saddr(remote->u.inet.data, 99032bafa8fSEric Blake local ? local->u.inet.data : NULL, errp); 9913ecc059dSGerd Hoffmann break; 9923ecc059dSGerd Hoffmann 9933ecc059dSGerd Hoffmann default: 9943ecc059dSGerd Hoffmann error_setg(errp, "socket type unsupported for datagram"); 9957a5b6af1SGerd Hoffmann fd = -1; 9963ecc059dSGerd Hoffmann } 9973ecc059dSGerd Hoffmann return fd; 9983ecc059dSGerd Hoffmann } 99917c55decSDaniel P. Berrange 100017c55decSDaniel P. Berrange 100117c55decSDaniel P. Berrange static SocketAddress * 100217c55decSDaniel P. Berrange socket_sockaddr_to_address_inet(struct sockaddr_storage *sa, 100317c55decSDaniel P. Berrange socklen_t salen, 100417c55decSDaniel P. Berrange Error **errp) 100517c55decSDaniel P. Berrange { 100617c55decSDaniel P. Berrange char host[NI_MAXHOST]; 100717c55decSDaniel P. Berrange char serv[NI_MAXSERV]; 100817c55decSDaniel P. Berrange SocketAddress *addr; 10090399293eSEric Blake InetSocketAddress *inet; 101017c55decSDaniel P. Berrange int ret; 101117c55decSDaniel P. Berrange 101217c55decSDaniel P. Berrange ret = getnameinfo((struct sockaddr *)sa, salen, 101317c55decSDaniel P. Berrange host, sizeof(host), 101417c55decSDaniel P. Berrange serv, sizeof(serv), 101517c55decSDaniel P. Berrange NI_NUMERICHOST | NI_NUMERICSERV); 101617c55decSDaniel P. Berrange if (ret != 0) { 101717c55decSDaniel P. Berrange error_setg(errp, "Cannot format numeric socket address: %s", 101817c55decSDaniel P. Berrange gai_strerror(ret)); 101917c55decSDaniel P. Berrange return NULL; 102017c55decSDaniel P. Berrange } 102117c55decSDaniel P. Berrange 102217c55decSDaniel P. Berrange addr = g_new0(SocketAddress, 1); 10232d32addaSEric Blake addr->type = SOCKET_ADDRESS_KIND_INET; 102432bafa8fSEric Blake inet = addr->u.inet.data = g_new0(InetSocketAddress, 1); 10250399293eSEric Blake inet->host = g_strdup(host); 10260399293eSEric Blake inet->port = g_strdup(serv); 102717c55decSDaniel P. Berrange if (sa->ss_family == AF_INET) { 10280399293eSEric Blake inet->has_ipv4 = inet->ipv4 = true; 102917c55decSDaniel P. Berrange } else { 10300399293eSEric Blake inet->has_ipv6 = inet->ipv6 = true; 103117c55decSDaniel P. Berrange } 103217c55decSDaniel P. Berrange 103317c55decSDaniel P. Berrange return addr; 103417c55decSDaniel P. Berrange } 103517c55decSDaniel P. Berrange 103617c55decSDaniel P. Berrange 103717c55decSDaniel P. Berrange #ifndef WIN32 103817c55decSDaniel P. Berrange static SocketAddress * 103917c55decSDaniel P. Berrange socket_sockaddr_to_address_unix(struct sockaddr_storage *sa, 104017c55decSDaniel P. Berrange socklen_t salen, 104117c55decSDaniel P. Berrange Error **errp) 104217c55decSDaniel P. Berrange { 104317c55decSDaniel P. Berrange SocketAddress *addr; 104417c55decSDaniel P. Berrange struct sockaddr_un *su = (struct sockaddr_un *)sa; 104517c55decSDaniel P. Berrange 104617c55decSDaniel P. Berrange addr = g_new0(SocketAddress, 1); 10472d32addaSEric Blake addr->type = SOCKET_ADDRESS_KIND_UNIX; 104832bafa8fSEric Blake addr->u.q_unix.data = g_new0(UnixSocketAddress, 1); 104917c55decSDaniel P. Berrange if (su->sun_path[0]) { 105032bafa8fSEric Blake addr->u.q_unix.data->path = g_strndup(su->sun_path, 105117c55decSDaniel P. Berrange sizeof(su->sun_path)); 105217c55decSDaniel P. Berrange } 105317c55decSDaniel P. Berrange 105417c55decSDaniel P. Berrange return addr; 105517c55decSDaniel P. Berrange } 105617c55decSDaniel P. Berrange #endif /* WIN32 */ 105717c55decSDaniel P. Berrange 1058559607eaSDaniel P. Berrange SocketAddress * 105917c55decSDaniel P. Berrange socket_sockaddr_to_address(struct sockaddr_storage *sa, 106017c55decSDaniel P. Berrange socklen_t salen, 106117c55decSDaniel P. Berrange Error **errp) 106217c55decSDaniel P. Berrange { 106317c55decSDaniel P. Berrange switch (sa->ss_family) { 106417c55decSDaniel P. Berrange case AF_INET: 106517c55decSDaniel P. Berrange case AF_INET6: 106617c55decSDaniel P. Berrange return socket_sockaddr_to_address_inet(sa, salen, errp); 106717c55decSDaniel P. Berrange 106817c55decSDaniel P. Berrange #ifndef WIN32 106917c55decSDaniel P. Berrange case AF_UNIX: 107017c55decSDaniel P. Berrange return socket_sockaddr_to_address_unix(sa, salen, errp); 107117c55decSDaniel P. Berrange #endif /* WIN32 */ 107217c55decSDaniel P. Berrange 107317c55decSDaniel P. Berrange default: 107417c55decSDaniel P. Berrange error_setg(errp, "socket family %d unsupported", 107517c55decSDaniel P. Berrange sa->ss_family); 107617c55decSDaniel P. Berrange return NULL; 107717c55decSDaniel P. Berrange } 107817c55decSDaniel P. Berrange return 0; 107917c55decSDaniel P. Berrange } 108017c55decSDaniel P. Berrange 108117c55decSDaniel P. Berrange 108217c55decSDaniel P. Berrange SocketAddress *socket_local_address(int fd, Error **errp) 108317c55decSDaniel P. Berrange { 108417c55decSDaniel P. Berrange struct sockaddr_storage ss; 108517c55decSDaniel P. Berrange socklen_t sslen = sizeof(ss); 108617c55decSDaniel P. Berrange 108717c55decSDaniel P. Berrange if (getsockname(fd, (struct sockaddr *)&ss, &sslen) < 0) { 1088b16a44e1SDaniel P. Berrange error_setg_errno(errp, errno, "%s", 108917c55decSDaniel P. Berrange "Unable to query local socket address"); 109017c55decSDaniel P. Berrange return NULL; 109117c55decSDaniel P. Berrange } 109217c55decSDaniel P. Berrange 109317c55decSDaniel P. Berrange return socket_sockaddr_to_address(&ss, sslen, errp); 109417c55decSDaniel P. Berrange } 109517c55decSDaniel P. Berrange 109617c55decSDaniel P. Berrange 109717c55decSDaniel P. Berrange SocketAddress *socket_remote_address(int fd, Error **errp) 109817c55decSDaniel P. Berrange { 109917c55decSDaniel P. Berrange struct sockaddr_storage ss; 110017c55decSDaniel P. Berrange socklen_t sslen = sizeof(ss); 110117c55decSDaniel P. Berrange 110217c55decSDaniel P. Berrange if (getpeername(fd, (struct sockaddr *)&ss, &sslen) < 0) { 1103b16a44e1SDaniel P. Berrange error_setg_errno(errp, errno, "%s", 110417c55decSDaniel P. Berrange "Unable to query remote socket address"); 110517c55decSDaniel P. Berrange return NULL; 110617c55decSDaniel P. Berrange } 110717c55decSDaniel P. Berrange 110817c55decSDaniel P. Berrange return socket_sockaddr_to_address(&ss, sslen, errp); 110917c55decSDaniel P. Berrange } 11102a8e21c7SDaniel P. Berrange 11112a8e21c7SDaniel P. Berrange 11122a8e21c7SDaniel P. Berrange void qapi_copy_SocketAddress(SocketAddress **p_dest, 11132a8e21c7SDaniel P. Berrange SocketAddress *src) 11142a8e21c7SDaniel P. Berrange { 11152a8e21c7SDaniel P. Berrange QmpOutputVisitor *qov; 11162a8e21c7SDaniel P. Berrange QmpInputVisitor *qiv; 11172a8e21c7SDaniel P. Berrange Visitor *ov, *iv; 11182a8e21c7SDaniel P. Berrange QObject *obj; 11192a8e21c7SDaniel P. Berrange 11202a8e21c7SDaniel P. Berrange *p_dest = NULL; 11212a8e21c7SDaniel P. Berrange 11222a8e21c7SDaniel P. Berrange qov = qmp_output_visitor_new(); 11232a8e21c7SDaniel P. Berrange ov = qmp_output_get_visitor(qov); 112451e72bc1SEric Blake visit_type_SocketAddress(ov, NULL, &src, &error_abort); 11252a8e21c7SDaniel P. Berrange obj = qmp_output_get_qobject(qov); 11262a8e21c7SDaniel P. Berrange qmp_output_visitor_cleanup(qov); 11272a8e21c7SDaniel P. Berrange if (!obj) { 11282a8e21c7SDaniel P. Berrange return; 11292a8e21c7SDaniel P. Berrange } 11302a8e21c7SDaniel P. Berrange 11312a8e21c7SDaniel P. Berrange qiv = qmp_input_visitor_new(obj); 11322a8e21c7SDaniel P. Berrange iv = qmp_input_get_visitor(qiv); 113351e72bc1SEric Blake visit_type_SocketAddress(iv, NULL, p_dest, &error_abort); 11342a8e21c7SDaniel P. Berrange qmp_input_visitor_cleanup(qiv); 11352a8e21c7SDaniel P. Berrange qobject_decref(obj); 11362a8e21c7SDaniel P. Berrange } 1137