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" 21baacf047SPaolo Bonzini #include "qemu/sockets.h" 22baacf047SPaolo Bonzini #include "qemu/main-loop.h" 232a8e21c7SDaniel P. Berrange #include "qapi/qmp-input-visitor.h" 242a8e21c7SDaniel P. Berrange #include "qapi/qmp-output-visitor.h" 252a8e21c7SDaniel P. Berrange #include "qapi-visit.h" 26baacf047SPaolo Bonzini 27baacf047SPaolo Bonzini #ifndef AI_ADDRCONFIG 28baacf047SPaolo Bonzini # define AI_ADDRCONFIG 0 29baacf047SPaolo Bonzini #endif 303de3d698SWolfgang Bumiller #ifndef AI_V4MAPPED 313de3d698SWolfgang Bumiller # define AI_V4MAPPED 0 323de3d698SWolfgang Bumiller #endif 33baacf047SPaolo Bonzini 34baacf047SPaolo Bonzini 35baacf047SPaolo Bonzini static int inet_getport(struct addrinfo *e) 36baacf047SPaolo Bonzini { 37baacf047SPaolo Bonzini struct sockaddr_in *i4; 38baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 39baacf047SPaolo Bonzini 40baacf047SPaolo Bonzini switch (e->ai_family) { 41baacf047SPaolo Bonzini case PF_INET6: 42baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 43baacf047SPaolo Bonzini return ntohs(i6->sin6_port); 44baacf047SPaolo Bonzini case PF_INET: 45baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 46baacf047SPaolo Bonzini return ntohs(i4->sin_port); 47baacf047SPaolo Bonzini default: 48baacf047SPaolo Bonzini return 0; 49baacf047SPaolo Bonzini } 50baacf047SPaolo Bonzini } 51baacf047SPaolo Bonzini 52baacf047SPaolo Bonzini static void inet_setport(struct addrinfo *e, int port) 53baacf047SPaolo Bonzini { 54baacf047SPaolo Bonzini struct sockaddr_in *i4; 55baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 56baacf047SPaolo Bonzini 57baacf047SPaolo Bonzini switch (e->ai_family) { 58baacf047SPaolo Bonzini case PF_INET6: 59baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 60baacf047SPaolo Bonzini i6->sin6_port = htons(port); 61baacf047SPaolo Bonzini break; 62baacf047SPaolo Bonzini case PF_INET: 63baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 64baacf047SPaolo Bonzini i4->sin_port = htons(port); 65baacf047SPaolo Bonzini break; 66baacf047SPaolo Bonzini } 67baacf047SPaolo Bonzini } 68baacf047SPaolo Bonzini 69a589569fSWenchao Xia NetworkAddressFamily inet_netfamily(int family) 70a589569fSWenchao Xia { 71a589569fSWenchao Xia switch (family) { 72a589569fSWenchao Xia case PF_INET6: return NETWORK_ADDRESS_FAMILY_IPV6; 73a589569fSWenchao Xia case PF_INET: return NETWORK_ADDRESS_FAMILY_IPV4; 74a589569fSWenchao Xia case PF_UNIX: return NETWORK_ADDRESS_FAMILY_UNIX; 75a589569fSWenchao Xia } 76a589569fSWenchao Xia return NETWORK_ADDRESS_FAMILY_UNKNOWN; 77a589569fSWenchao Xia } 78a589569fSWenchao Xia 791856835dSDaniel P. Berrange /* 801856835dSDaniel P. Berrange * Matrix we're trying to apply 811856835dSDaniel P. Berrange * 821856835dSDaniel P. Berrange * ipv4 ipv6 family 831856835dSDaniel P. Berrange * - - PF_UNSPEC 841856835dSDaniel P. Berrange * - f PF_INET 851856835dSDaniel P. Berrange * - t PF_INET6 861856835dSDaniel P. Berrange * f - PF_INET6 871856835dSDaniel P. Berrange * f f <error> 881856835dSDaniel P. Berrange * f t PF_INET6 891856835dSDaniel P. Berrange * t - PF_INET 901856835dSDaniel P. Berrange * t f PF_INET 911856835dSDaniel P. Berrange * t t PF_INET6 921856835dSDaniel P. Berrange * 931856835dSDaniel P. Berrange * NB, this matrix is only about getting the neccessary results 941856835dSDaniel P. Berrange * from getaddrinfo(). Some of the cases require further work 951856835dSDaniel P. Berrange * after reading results from getaddrinfo in order to fully 961856835dSDaniel P. Berrange * apply the logic the end user wants. eg with the last case 971856835dSDaniel P. Berrange * ipv4=t + ipv6=t + PF_INET6, getaddrinfo alone can only 981856835dSDaniel P. Berrange * guarantee the ipv6=t part of the request - we need more 991856835dSDaniel P. Berrange * checks to provide ipv4=t part of the guarantee. This is 1001856835dSDaniel P. Berrange * outside scope of this method and not currently handled by 1011856835dSDaniel P. Berrange * callers at all. 1021856835dSDaniel P. Berrange */ 1031856835dSDaniel P. Berrange static int inet_ai_family_from_address(InetSocketAddress *addr, 1041856835dSDaniel P. Berrange Error **errp) 1051856835dSDaniel P. Berrange { 1061856835dSDaniel P. Berrange if (addr->has_ipv6 && addr->has_ipv4 && 1071856835dSDaniel P. Berrange !addr->ipv6 && !addr->ipv4) { 1081856835dSDaniel P. Berrange error_setg(errp, "Cannot disable IPv4 and IPv6 at same time"); 1091856835dSDaniel P. Berrange return PF_UNSPEC; 1101856835dSDaniel P. Berrange } 1111856835dSDaniel P. Berrange if ((addr->has_ipv6 && addr->ipv6) || (addr->has_ipv4 && !addr->ipv4)) { 1121856835dSDaniel P. Berrange return PF_INET6; 1131856835dSDaniel P. Berrange } 1141856835dSDaniel P. Berrange if ((addr->has_ipv4 && addr->ipv4) || (addr->has_ipv6 && !addr->ipv6)) { 1151856835dSDaniel P. Berrange return PF_INET; 1161856835dSDaniel P. Berrange } 1171856835dSDaniel P. Berrange return PF_UNSPEC; 1181856835dSDaniel P. Berrange } 1191856835dSDaniel P. Berrange 1201856835dSDaniel P. Berrange static int inet_listen_saddr(InetSocketAddress *saddr, 1211856835dSDaniel P. Berrange int port_offset, 1221856835dSDaniel P. Berrange bool update_addr, 1231856835dSDaniel P. Berrange Error **errp) 124baacf047SPaolo Bonzini { 125baacf047SPaolo Bonzini struct addrinfo ai,*res,*e; 126baacf047SPaolo Bonzini char port[33]; 127baacf047SPaolo Bonzini char uaddr[INET6_ADDRSTRLEN+1]; 128baacf047SPaolo Bonzini char uport[33]; 1291856835dSDaniel P. Berrange int slisten, rc, port_min, port_max, p; 1301856835dSDaniel P. Berrange Error *err = NULL; 131baacf047SPaolo Bonzini 132baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 1333de3d698SWolfgang Bumiller ai.ai_flags = AI_PASSIVE; 1341856835dSDaniel P. Berrange ai.ai_family = inet_ai_family_from_address(saddr, &err); 135baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 136baacf047SPaolo Bonzini 1371856835dSDaniel P. Berrange if (err) { 1381856835dSDaniel P. Berrange error_propagate(errp, err); 1391856835dSDaniel P. Berrange return -1; 1401856835dSDaniel P. Berrange } 1411856835dSDaniel P. Berrange 1421856835dSDaniel P. Berrange if (saddr->host == NULL) { 1430983f5e6SDaniel P. Berrange error_setg(errp, "host not specified"); 144baacf047SPaolo Bonzini return -1; 145baacf047SPaolo Bonzini } 1461856835dSDaniel P. Berrange if (saddr->port != NULL) { 1471856835dSDaniel P. Berrange pstrcpy(port, sizeof(port), saddr->port); 1480983f5e6SDaniel P. Berrange } else { 1490983f5e6SDaniel P. Berrange port[0] = '\0'; 1500983f5e6SDaniel P. Berrange } 151baacf047SPaolo Bonzini 152baacf047SPaolo Bonzini /* lookup */ 1538bc89127SGerd Hoffmann if (port_offset) { 1548bc89127SGerd Hoffmann unsigned long long baseport; 1550983f5e6SDaniel P. Berrange if (strlen(port) == 0) { 1560983f5e6SDaniel P. Berrange error_setg(errp, "port not specified"); 1570983f5e6SDaniel P. Berrange return -1; 1580983f5e6SDaniel P. Berrange } 1598bc89127SGerd Hoffmann if (parse_uint_full(port, &baseport, 10) < 0) { 1608bc89127SGerd Hoffmann error_setg(errp, "can't convert to a number: %s", port); 1618bc89127SGerd Hoffmann return -1; 1628bc89127SGerd Hoffmann } 1638bc89127SGerd Hoffmann if (baseport > 65535 || 1648bc89127SGerd Hoffmann baseport + port_offset > 65535) { 1658bc89127SGerd Hoffmann error_setg(errp, "port %s out of range", port); 1668bc89127SGerd Hoffmann return -1; 1678bc89127SGerd Hoffmann } 1688bc89127SGerd Hoffmann snprintf(port, sizeof(port), "%d", (int)baseport + port_offset); 1698bc89127SGerd Hoffmann } 1701856835dSDaniel P. Berrange rc = getaddrinfo(strlen(saddr->host) ? saddr->host : NULL, 1710983f5e6SDaniel P. Berrange strlen(port) ? port : NULL, &ai, &res); 172baacf047SPaolo Bonzini if (rc != 0) { 1731856835dSDaniel P. Berrange error_setg(errp, "address resolution failed for %s:%s: %s", 1741856835dSDaniel P. Berrange saddr->host, port, gai_strerror(rc)); 175baacf047SPaolo Bonzini return -1; 176baacf047SPaolo Bonzini } 177baacf047SPaolo Bonzini 178baacf047SPaolo Bonzini /* create socket + bind */ 179baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 180baacf047SPaolo Bonzini getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, 181baacf047SPaolo Bonzini uaddr,INET6_ADDRSTRLEN,uport,32, 182baacf047SPaolo Bonzini NI_NUMERICHOST | NI_NUMERICSERV); 183baacf047SPaolo Bonzini slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); 184baacf047SPaolo Bonzini if (slisten < 0) { 185baacf047SPaolo Bonzini if (!e->ai_next) { 186235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 187baacf047SPaolo Bonzini } 188baacf047SPaolo Bonzini continue; 189baacf047SPaolo Bonzini } 190baacf047SPaolo Bonzini 19104fd1c78SSebastian Ottlik socket_set_fast_reuse(slisten); 192baacf047SPaolo Bonzini #ifdef IPV6_V6ONLY 193baacf047SPaolo Bonzini if (e->ai_family == PF_INET6) { 194baacf047SPaolo Bonzini /* listen on both ipv4 and ipv6 */ 195f9b5426fSPeter Maydell const int off = 0; 1969957fc7fSStefan Weil qemu_setsockopt(slisten, IPPROTO_IPV6, IPV6_V6ONLY, &off, 197baacf047SPaolo Bonzini sizeof(off)); 198baacf047SPaolo Bonzini } 199baacf047SPaolo Bonzini #endif 200baacf047SPaolo Bonzini 201baacf047SPaolo Bonzini port_min = inet_getport(e); 2021856835dSDaniel P. Berrange port_max = saddr->has_to ? saddr->to + port_offset : port_min; 203baacf047SPaolo Bonzini for (p = port_min; p <= port_max; p++) { 204baacf047SPaolo Bonzini inet_setport(e, p); 205baacf047SPaolo Bonzini if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) { 206baacf047SPaolo Bonzini goto listen; 207baacf047SPaolo Bonzini } 208baacf047SPaolo Bonzini if (p == port_max) { 209baacf047SPaolo Bonzini if (!e->ai_next) { 210235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to bind socket"); 211baacf047SPaolo Bonzini } 212baacf047SPaolo Bonzini } 213baacf047SPaolo Bonzini } 214baacf047SPaolo Bonzini closesocket(slisten); 215baacf047SPaolo Bonzini } 216baacf047SPaolo Bonzini freeaddrinfo(res); 217baacf047SPaolo Bonzini return -1; 218baacf047SPaolo Bonzini 219baacf047SPaolo Bonzini listen: 220baacf047SPaolo Bonzini if (listen(slisten,1) != 0) { 221235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to listen on socket"); 222baacf047SPaolo Bonzini closesocket(slisten); 223baacf047SPaolo Bonzini freeaddrinfo(res); 224baacf047SPaolo Bonzini return -1; 225baacf047SPaolo Bonzini } 2261856835dSDaniel P. Berrange if (update_addr) { 2271856835dSDaniel P. Berrange g_free(saddr->host); 2281856835dSDaniel P. Berrange saddr->host = g_strdup(uaddr); 2291856835dSDaniel P. Berrange g_free(saddr->port); 2301856835dSDaniel P. Berrange saddr->port = g_strdup_printf("%d", 2311856835dSDaniel P. Berrange inet_getport(e) - port_offset); 2321856835dSDaniel P. Berrange saddr->has_ipv6 = saddr->ipv6 = e->ai_family == PF_INET6; 2331856835dSDaniel P. Berrange saddr->has_ipv4 = saddr->ipv4 = e->ai_family != PF_INET6; 2341856835dSDaniel P. Berrange } 235baacf047SPaolo Bonzini freeaddrinfo(res); 236baacf047SPaolo Bonzini return slisten; 237baacf047SPaolo Bonzini } 238baacf047SPaolo Bonzini 239baacf047SPaolo Bonzini #ifdef _WIN32 240baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 241baacf047SPaolo Bonzini ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) 242baacf047SPaolo Bonzini #else 243baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 244baacf047SPaolo Bonzini ((rc) == -EINPROGRESS) 245baacf047SPaolo Bonzini #endif 246baacf047SPaolo Bonzini 247baacf047SPaolo Bonzini /* Struct to store connect state for non blocking connect */ 248baacf047SPaolo Bonzini typedef struct ConnectState { 249baacf047SPaolo Bonzini int fd; 250baacf047SPaolo Bonzini struct addrinfo *addr_list; 251baacf047SPaolo Bonzini struct addrinfo *current_addr; 252baacf047SPaolo Bonzini NonBlockingConnectHandler *callback; 253baacf047SPaolo Bonzini void *opaque; 254baacf047SPaolo Bonzini } ConnectState; 255baacf047SPaolo Bonzini 256baacf047SPaolo Bonzini static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, 257baacf047SPaolo Bonzini ConnectState *connect_state, Error **errp); 258baacf047SPaolo Bonzini 259baacf047SPaolo Bonzini static void wait_for_connect(void *opaque) 260baacf047SPaolo Bonzini { 261baacf047SPaolo Bonzini ConnectState *s = opaque; 262baacf047SPaolo Bonzini int val = 0, rc = 0; 263baacf047SPaolo Bonzini socklen_t valsize = sizeof(val); 264baacf047SPaolo Bonzini bool in_progress; 26551795029SCorey Minyard Error *err = NULL; 266baacf047SPaolo Bonzini 26782e1cc4bSFam Zheng qemu_set_fd_handler(s->fd, NULL, NULL, NULL); 268baacf047SPaolo Bonzini 269baacf047SPaolo Bonzini do { 2709957fc7fSStefan Weil rc = qemu_getsockopt(s->fd, SOL_SOCKET, SO_ERROR, &val, &valsize); 271baacf047SPaolo Bonzini } while (rc == -1 && socket_error() == EINTR); 272baacf047SPaolo Bonzini 273baacf047SPaolo Bonzini /* update rc to contain error */ 274baacf047SPaolo Bonzini if (!rc && val) { 275baacf047SPaolo Bonzini rc = -1; 27651795029SCorey Minyard errno = val; 277baacf047SPaolo Bonzini } 278baacf047SPaolo Bonzini 279baacf047SPaolo Bonzini /* connect error */ 280baacf047SPaolo Bonzini if (rc < 0) { 28151795029SCorey Minyard error_setg_errno(&err, errno, "Error connecting to socket"); 282baacf047SPaolo Bonzini closesocket(s->fd); 283baacf047SPaolo Bonzini s->fd = rc; 284baacf047SPaolo Bonzini } 285baacf047SPaolo Bonzini 286baacf047SPaolo Bonzini /* try to connect to the next address on the list */ 287baacf047SPaolo Bonzini if (s->current_addr) { 288baacf047SPaolo Bonzini while (s->current_addr->ai_next != NULL && s->fd < 0) { 289baacf047SPaolo Bonzini s->current_addr = s->current_addr->ai_next; 290baacf047SPaolo Bonzini s->fd = inet_connect_addr(s->current_addr, &in_progress, s, NULL); 29151795029SCorey Minyard if (s->fd < 0) { 29251795029SCorey Minyard error_free(err); 29351795029SCorey Minyard err = NULL; 29451795029SCorey Minyard error_setg_errno(&err, errno, "Unable to start socket connect"); 29551795029SCorey Minyard } 296baacf047SPaolo Bonzini /* connect in progress */ 297baacf047SPaolo Bonzini if (in_progress) { 29851795029SCorey Minyard goto out; 299baacf047SPaolo Bonzini } 300baacf047SPaolo Bonzini } 301baacf047SPaolo Bonzini 302baacf047SPaolo Bonzini freeaddrinfo(s->addr_list); 303baacf047SPaolo Bonzini } 304baacf047SPaolo Bonzini 305baacf047SPaolo Bonzini if (s->callback) { 30651795029SCorey Minyard s->callback(s->fd, err, s->opaque); 307baacf047SPaolo Bonzini } 308baacf047SPaolo Bonzini g_free(s); 30951795029SCorey Minyard out: 31051795029SCorey Minyard error_free(err); 311baacf047SPaolo Bonzini } 312baacf047SPaolo Bonzini 313baacf047SPaolo Bonzini static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, 314baacf047SPaolo Bonzini ConnectState *connect_state, Error **errp) 315baacf047SPaolo Bonzini { 316baacf047SPaolo Bonzini int sock, rc; 317baacf047SPaolo Bonzini 318baacf047SPaolo Bonzini *in_progress = false; 319baacf047SPaolo Bonzini 320baacf047SPaolo Bonzini sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); 321baacf047SPaolo Bonzini if (sock < 0) { 322235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 323baacf047SPaolo Bonzini return -1; 324baacf047SPaolo Bonzini } 32504fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 326baacf047SPaolo Bonzini if (connect_state != NULL) { 327f9e8caccSStefan Hajnoczi qemu_set_nonblock(sock); 328baacf047SPaolo Bonzini } 329baacf047SPaolo Bonzini /* connect to peer */ 330baacf047SPaolo Bonzini do { 331baacf047SPaolo Bonzini rc = 0; 332baacf047SPaolo Bonzini if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { 333baacf047SPaolo Bonzini rc = -socket_error(); 334baacf047SPaolo Bonzini } 335baacf047SPaolo Bonzini } while (rc == -EINTR); 336baacf047SPaolo Bonzini 337baacf047SPaolo Bonzini if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { 338baacf047SPaolo Bonzini connect_state->fd = sock; 33982e1cc4bSFam Zheng qemu_set_fd_handler(sock, NULL, wait_for_connect, connect_state); 340baacf047SPaolo Bonzini *in_progress = true; 341baacf047SPaolo Bonzini } else if (rc < 0) { 342235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to connect socket"); 343baacf047SPaolo Bonzini closesocket(sock); 344baacf047SPaolo Bonzini return -1; 345baacf047SPaolo Bonzini } 346baacf047SPaolo Bonzini return sock; 347baacf047SPaolo Bonzini } 348baacf047SPaolo Bonzini 3492942e420SDaniel P. Berrange static struct addrinfo *inet_parse_connect_saddr(InetSocketAddress *saddr, 3502942e420SDaniel P. Berrange Error **errp) 351baacf047SPaolo Bonzini { 352baacf047SPaolo Bonzini struct addrinfo ai, *res; 353baacf047SPaolo Bonzini int rc; 3542942e420SDaniel P. Berrange Error *err = NULL; 355baacf047SPaolo Bonzini 356baacf047SPaolo Bonzini memset(&ai, 0, sizeof(ai)); 357baacf047SPaolo Bonzini 3583de3d698SWolfgang Bumiller ai.ai_flags = AI_CANONNAME | AI_V4MAPPED | AI_ADDRCONFIG; 3592942e420SDaniel P. Berrange ai.ai_family = inet_ai_family_from_address(saddr, &err); 360baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 361baacf047SPaolo Bonzini 3622942e420SDaniel P. Berrange if (err) { 3632942e420SDaniel P. Berrange error_propagate(errp, err); 3642942e420SDaniel P. Berrange return NULL; 3652942e420SDaniel P. Berrange } 3662942e420SDaniel P. Berrange 3672942e420SDaniel P. Berrange if (saddr->host == NULL || saddr->port == NULL) { 368baacf047SPaolo Bonzini error_setg(errp, "host and/or port not specified"); 369baacf047SPaolo Bonzini return NULL; 370baacf047SPaolo Bonzini } 371baacf047SPaolo Bonzini 372baacf047SPaolo Bonzini /* lookup */ 3732942e420SDaniel P. Berrange rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); 374baacf047SPaolo Bonzini if (rc != 0) { 3752942e420SDaniel P. Berrange error_setg(errp, "address resolution failed for %s:%s: %s", 3762942e420SDaniel P. Berrange saddr->host, saddr->port, gai_strerror(rc)); 377baacf047SPaolo Bonzini return NULL; 378baacf047SPaolo Bonzini } 379baacf047SPaolo Bonzini return res; 380baacf047SPaolo Bonzini } 381baacf047SPaolo Bonzini 382baacf047SPaolo Bonzini /** 383baacf047SPaolo Bonzini * Create a socket and connect it to an address. 384baacf047SPaolo Bonzini * 3852942e420SDaniel P. Berrange * @saddr: Inet socket address specification 386baacf047SPaolo Bonzini * @errp: set on error 387baacf047SPaolo Bonzini * @callback: callback function for non-blocking connect 388baacf047SPaolo Bonzini * @opaque: opaque for callback function 389baacf047SPaolo Bonzini * 390baacf047SPaolo Bonzini * Returns: -1 on error, file descriptor on success. 391baacf047SPaolo Bonzini * 392baacf047SPaolo Bonzini * If @callback is non-null, the connect is non-blocking. If this 393baacf047SPaolo Bonzini * function succeeds, callback will be called when the connection 394baacf047SPaolo Bonzini * completes, with the file descriptor on success, or -1 on error. 395baacf047SPaolo Bonzini */ 3962942e420SDaniel P. Berrange static int inet_connect_saddr(InetSocketAddress *saddr, Error **errp, 397baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 398baacf047SPaolo Bonzini { 3993f9286b7SMarkus Armbruster Error *local_err = NULL; 400baacf047SPaolo Bonzini struct addrinfo *res, *e; 401baacf047SPaolo Bonzini int sock = -1; 402baacf047SPaolo Bonzini bool in_progress; 403baacf047SPaolo Bonzini ConnectState *connect_state = NULL; 404baacf047SPaolo Bonzini 4052942e420SDaniel P. Berrange res = inet_parse_connect_saddr(saddr, errp); 406baacf047SPaolo Bonzini if (!res) { 407baacf047SPaolo Bonzini return -1; 408baacf047SPaolo Bonzini } 409baacf047SPaolo Bonzini 410baacf047SPaolo Bonzini if (callback != NULL) { 411baacf047SPaolo Bonzini connect_state = g_malloc0(sizeof(*connect_state)); 412baacf047SPaolo Bonzini connect_state->addr_list = res; 413baacf047SPaolo Bonzini connect_state->callback = callback; 414baacf047SPaolo Bonzini connect_state->opaque = opaque; 415baacf047SPaolo Bonzini } 416baacf047SPaolo Bonzini 417baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 4183f9286b7SMarkus Armbruster error_free(local_err); 4193f9286b7SMarkus Armbruster local_err = NULL; 420baacf047SPaolo Bonzini if (connect_state != NULL) { 421baacf047SPaolo Bonzini connect_state->current_addr = e; 422baacf047SPaolo Bonzini } 4233f9286b7SMarkus Armbruster sock = inet_connect_addr(e, &in_progress, connect_state, &local_err); 4243f9286b7SMarkus Armbruster if (sock >= 0) { 425baacf047SPaolo Bonzini break; 426baacf047SPaolo Bonzini } 427baacf047SPaolo Bonzini } 4283f9286b7SMarkus Armbruster 4293f9286b7SMarkus Armbruster if (sock < 0) { 4303f9286b7SMarkus Armbruster error_propagate(errp, local_err); 4313f9286b7SMarkus Armbruster } else if (in_progress) { 4323f9286b7SMarkus Armbruster /* wait_for_connect() will do the rest */ 4333f9286b7SMarkus Armbruster return sock; 4343f9286b7SMarkus Armbruster } else { 4353f9286b7SMarkus Armbruster if (callback) { 43651795029SCorey Minyard callback(sock, NULL, opaque); 4373f9286b7SMarkus Armbruster } 4383f9286b7SMarkus Armbruster } 439baacf047SPaolo Bonzini g_free(connect_state); 440baacf047SPaolo Bonzini freeaddrinfo(res); 441baacf047SPaolo Bonzini return sock; 442baacf047SPaolo Bonzini } 443baacf047SPaolo Bonzini 4448b39910eSDaniel P. Berrange static int inet_dgram_saddr(InetSocketAddress *sraddr, 4458b39910eSDaniel P. Berrange InetSocketAddress *sladdr, 4468b39910eSDaniel P. Berrange Error **errp) 447baacf047SPaolo Bonzini { 448baacf047SPaolo Bonzini struct addrinfo ai, *peer = NULL, *local = NULL; 449baacf047SPaolo Bonzini const char *addr; 450baacf047SPaolo Bonzini const char *port; 451baacf047SPaolo Bonzini int sock = -1, rc; 4528b39910eSDaniel P. Berrange Error *err = NULL; 453baacf047SPaolo Bonzini 454baacf047SPaolo Bonzini /* lookup peer addr */ 455baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 4563de3d698SWolfgang Bumiller ai.ai_flags = AI_CANONNAME | AI_V4MAPPED | AI_ADDRCONFIG; 4578b39910eSDaniel P. Berrange ai.ai_family = inet_ai_family_from_address(sraddr, &err); 458baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 459baacf047SPaolo Bonzini 4608b39910eSDaniel P. Berrange if (err) { 4618b39910eSDaniel P. Berrange error_propagate(errp, err); 462*58c652c0SPaolo Bonzini goto err; 4638b39910eSDaniel P. Berrange } 4648b39910eSDaniel P. Berrange 4658b39910eSDaniel P. Berrange addr = sraddr->host; 4668b39910eSDaniel P. Berrange port = sraddr->port; 467baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 468baacf047SPaolo Bonzini addr = "localhost"; 469baacf047SPaolo Bonzini } 470baacf047SPaolo Bonzini if (port == NULL || strlen(port) == 0) { 471baacf047SPaolo Bonzini error_setg(errp, "remote port not specified"); 472*58c652c0SPaolo Bonzini goto err; 473baacf047SPaolo Bonzini } 474baacf047SPaolo Bonzini 475baacf047SPaolo Bonzini if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) { 476baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 477baacf047SPaolo Bonzini gai_strerror(rc)); 478*58c652c0SPaolo Bonzini goto err; 479baacf047SPaolo Bonzini } 480baacf047SPaolo Bonzini 481baacf047SPaolo Bonzini /* lookup local addr */ 482baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 483baacf047SPaolo Bonzini ai.ai_flags = AI_PASSIVE; 484baacf047SPaolo Bonzini ai.ai_family = peer->ai_family; 485baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 486baacf047SPaolo Bonzini 4878b39910eSDaniel P. Berrange if (sladdr) { 4888b39910eSDaniel P. Berrange addr = sladdr->host; 4898b39910eSDaniel P. Berrange port = sladdr->port; 490baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 491baacf047SPaolo Bonzini addr = NULL; 492baacf047SPaolo Bonzini } 4938b39910eSDaniel P. Berrange if (!port || strlen(port) == 0) { 494baacf047SPaolo Bonzini port = "0"; 4958b39910eSDaniel P. Berrange } 4968b39910eSDaniel P. Berrange } else { 4978b39910eSDaniel P. Berrange addr = NULL; 4988b39910eSDaniel P. Berrange port = "0"; 4998b39910eSDaniel P. Berrange } 500baacf047SPaolo Bonzini 501baacf047SPaolo Bonzini if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) { 502baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 503baacf047SPaolo Bonzini gai_strerror(rc)); 504baacf047SPaolo Bonzini goto err; 505baacf047SPaolo Bonzini } 506baacf047SPaolo Bonzini 507baacf047SPaolo Bonzini /* create socket */ 508baacf047SPaolo Bonzini sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); 509baacf047SPaolo Bonzini if (sock < 0) { 510235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 511baacf047SPaolo Bonzini goto err; 512baacf047SPaolo Bonzini } 51304fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 514baacf047SPaolo Bonzini 515baacf047SPaolo Bonzini /* bind socket */ 516baacf047SPaolo Bonzini if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { 517235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to bind socket"); 518baacf047SPaolo Bonzini goto err; 519baacf047SPaolo Bonzini } 520baacf047SPaolo Bonzini 521baacf047SPaolo Bonzini /* connect to peer */ 522baacf047SPaolo Bonzini if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { 523235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to connect socket"); 524baacf047SPaolo Bonzini goto err; 525baacf047SPaolo Bonzini } 526baacf047SPaolo Bonzini 527baacf047SPaolo Bonzini freeaddrinfo(local); 528baacf047SPaolo Bonzini freeaddrinfo(peer); 529baacf047SPaolo Bonzini return sock; 530baacf047SPaolo Bonzini 531baacf047SPaolo Bonzini err: 532baacf047SPaolo Bonzini if (-1 != sock) 533baacf047SPaolo Bonzini closesocket(sock); 534baacf047SPaolo Bonzini if (local) 535baacf047SPaolo Bonzini freeaddrinfo(local); 536baacf047SPaolo Bonzini if (peer) 537baacf047SPaolo Bonzini freeaddrinfo(peer); 538baacf047SPaolo Bonzini return -1; 539baacf047SPaolo Bonzini } 540baacf047SPaolo Bonzini 541baacf047SPaolo Bonzini /* compatibility wrapper */ 542f17c90beSKevin Wolf InetSocketAddress *inet_parse(const char *str, Error **errp) 543baacf047SPaolo Bonzini { 544baacf047SPaolo Bonzini InetSocketAddress *addr; 545baacf047SPaolo Bonzini const char *optstr, *h; 54655a10996SKevin Wolf char host[65]; 547baacf047SPaolo Bonzini char port[33]; 548baacf047SPaolo Bonzini int to; 549baacf047SPaolo Bonzini int pos; 550baacf047SPaolo Bonzini 551baacf047SPaolo Bonzini addr = g_new0(InetSocketAddress, 1); 552baacf047SPaolo Bonzini 553baacf047SPaolo Bonzini /* parse address */ 554baacf047SPaolo Bonzini if (str[0] == ':') { 555baacf047SPaolo Bonzini /* no host given */ 556baacf047SPaolo Bonzini host[0] = '\0'; 557baacf047SPaolo Bonzini if (1 != sscanf(str, ":%32[^,]%n", port, &pos)) { 558baacf047SPaolo Bonzini error_setg(errp, "error parsing port in address '%s'", str); 559baacf047SPaolo Bonzini goto fail; 560baacf047SPaolo Bonzini } 561baacf047SPaolo Bonzini } else if (str[0] == '[') { 562baacf047SPaolo Bonzini /* IPv6 addr */ 563baacf047SPaolo Bonzini if (2 != sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos)) { 564baacf047SPaolo Bonzini error_setg(errp, "error parsing IPv6 address '%s'", str); 565baacf047SPaolo Bonzini goto fail; 566baacf047SPaolo Bonzini } 567baacf047SPaolo Bonzini addr->ipv6 = addr->has_ipv6 = true; 568baacf047SPaolo Bonzini } else { 569391b7b97SJán Tomko /* hostname or IPv4 addr */ 570baacf047SPaolo Bonzini if (2 != sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos)) { 571baacf047SPaolo Bonzini error_setg(errp, "error parsing address '%s'", str); 572baacf047SPaolo Bonzini goto fail; 573baacf047SPaolo Bonzini } 574391b7b97SJán Tomko if (host[strspn(host, "0123456789.")] == '\0') { 575391b7b97SJán Tomko addr->ipv4 = addr->has_ipv4 = true; 576391b7b97SJán Tomko } 577baacf047SPaolo Bonzini } 578baacf047SPaolo Bonzini 579baacf047SPaolo Bonzini addr->host = g_strdup(host); 580baacf047SPaolo Bonzini addr->port = g_strdup(port); 581baacf047SPaolo Bonzini 582baacf047SPaolo Bonzini /* parse options */ 583baacf047SPaolo Bonzini optstr = str + pos; 584baacf047SPaolo Bonzini h = strstr(optstr, ",to="); 585baacf047SPaolo Bonzini if (h) { 586baacf047SPaolo Bonzini h += 4; 587baacf047SPaolo Bonzini if (sscanf(h, "%d%n", &to, &pos) != 1 || 588baacf047SPaolo Bonzini (h[pos] != '\0' && h[pos] != ',')) { 589baacf047SPaolo Bonzini error_setg(errp, "error parsing to= argument"); 590baacf047SPaolo Bonzini goto fail; 591baacf047SPaolo Bonzini } 592baacf047SPaolo Bonzini addr->has_to = true; 593baacf047SPaolo Bonzini addr->to = to; 594baacf047SPaolo Bonzini } 595baacf047SPaolo Bonzini if (strstr(optstr, ",ipv4")) { 596baacf047SPaolo Bonzini addr->ipv4 = addr->has_ipv4 = true; 597baacf047SPaolo Bonzini } 598baacf047SPaolo Bonzini if (strstr(optstr, ",ipv6")) { 599baacf047SPaolo Bonzini addr->ipv6 = addr->has_ipv6 = true; 600baacf047SPaolo Bonzini } 601baacf047SPaolo Bonzini return addr; 602baacf047SPaolo Bonzini 603baacf047SPaolo Bonzini fail: 604baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 605baacf047SPaolo Bonzini return NULL; 606baacf047SPaolo Bonzini } 607baacf047SPaolo Bonzini 608baacf047SPaolo Bonzini int inet_listen(const char *str, char *ostr, int olen, 609baacf047SPaolo Bonzini int socktype, int port_offset, Error **errp) 610baacf047SPaolo Bonzini { 611baacf047SPaolo Bonzini char *optstr; 612baacf047SPaolo Bonzini int sock = -1; 613baacf047SPaolo Bonzini InetSocketAddress *addr; 614baacf047SPaolo Bonzini 615baacf047SPaolo Bonzini addr = inet_parse(str, errp); 616baacf047SPaolo Bonzini if (addr != NULL) { 6171856835dSDaniel P. Berrange sock = inet_listen_saddr(addr, port_offset, true, errp); 618baacf047SPaolo Bonzini if (sock != -1 && ostr) { 619baacf047SPaolo Bonzini optstr = strchr(str, ','); 6201856835dSDaniel P. Berrange if (addr->ipv6) { 621baacf047SPaolo Bonzini snprintf(ostr, olen, "[%s]:%s%s", 6221856835dSDaniel P. Berrange addr->host, 6231856835dSDaniel P. Berrange addr->port, 624baacf047SPaolo Bonzini optstr ? optstr : ""); 625baacf047SPaolo Bonzini } else { 626baacf047SPaolo Bonzini snprintf(ostr, olen, "%s:%s%s", 6271856835dSDaniel P. Berrange addr->host, 6281856835dSDaniel P. Berrange addr->port, 629baacf047SPaolo Bonzini optstr ? optstr : ""); 630baacf047SPaolo Bonzini } 631baacf047SPaolo Bonzini } 6321856835dSDaniel P. Berrange qapi_free_InetSocketAddress(addr); 633baacf047SPaolo Bonzini } 634baacf047SPaolo Bonzini return sock; 635baacf047SPaolo Bonzini } 636baacf047SPaolo Bonzini 637baacf047SPaolo Bonzini /** 638baacf047SPaolo Bonzini * Create a blocking socket and connect it to an address. 639baacf047SPaolo Bonzini * 640baacf047SPaolo Bonzini * @str: address string 641baacf047SPaolo Bonzini * @errp: set in case of an error 642baacf047SPaolo Bonzini * 643baacf047SPaolo Bonzini * Returns -1 in case of error, file descriptor on success 644baacf047SPaolo Bonzini **/ 645baacf047SPaolo Bonzini int inet_connect(const char *str, Error **errp) 646baacf047SPaolo Bonzini { 647baacf047SPaolo Bonzini int sock = -1; 648baacf047SPaolo Bonzini InetSocketAddress *addr; 649baacf047SPaolo Bonzini 650baacf047SPaolo Bonzini addr = inet_parse(str, errp); 651baacf047SPaolo Bonzini if (addr != NULL) { 6522942e420SDaniel P. Berrange sock = inet_connect_saddr(addr, errp, NULL, NULL); 653baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 654baacf047SPaolo Bonzini } 655baacf047SPaolo Bonzini return sock; 656baacf047SPaolo Bonzini } 657baacf047SPaolo Bonzini 658baacf047SPaolo Bonzini /** 659baacf047SPaolo Bonzini * Create a non-blocking socket and connect it to an address. 660baacf047SPaolo Bonzini * Calls the callback function with fd in case of success or -1 in case of 661baacf047SPaolo Bonzini * error. 662baacf047SPaolo Bonzini * 663baacf047SPaolo Bonzini * @str: address string 664baacf047SPaolo Bonzini * @callback: callback function that is called when connect completes, 665baacf047SPaolo Bonzini * cannot be NULL. 666baacf047SPaolo Bonzini * @opaque: opaque for callback function 667baacf047SPaolo Bonzini * @errp: set in case of an error 668baacf047SPaolo Bonzini * 669baacf047SPaolo Bonzini * Returns: -1 on immediate error, file descriptor on success. 670baacf047SPaolo Bonzini **/ 671baacf047SPaolo Bonzini int inet_nonblocking_connect(const char *str, 672baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, 673baacf047SPaolo Bonzini void *opaque, Error **errp) 674baacf047SPaolo Bonzini { 675baacf047SPaolo Bonzini int sock = -1; 676baacf047SPaolo Bonzini InetSocketAddress *addr; 677baacf047SPaolo Bonzini 678baacf047SPaolo Bonzini g_assert(callback != NULL); 679baacf047SPaolo Bonzini 680baacf047SPaolo Bonzini addr = inet_parse(str, errp); 681baacf047SPaolo Bonzini if (addr != NULL) { 6822942e420SDaniel P. Berrange sock = inet_connect_saddr(addr, errp, callback, opaque); 683baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 684baacf047SPaolo Bonzini } 685baacf047SPaolo Bonzini return sock; 686baacf047SPaolo Bonzini } 687baacf047SPaolo Bonzini 688baacf047SPaolo Bonzini #ifndef _WIN32 689baacf047SPaolo Bonzini 6901856835dSDaniel P. Berrange static int unix_listen_saddr(UnixSocketAddress *saddr, 6911856835dSDaniel P. Berrange bool update_addr, 6921856835dSDaniel P. Berrange Error **errp) 693baacf047SPaolo Bonzini { 694baacf047SPaolo Bonzini struct sockaddr_un un; 695baacf047SPaolo Bonzini int sock, fd; 696baacf047SPaolo Bonzini 697baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 698baacf047SPaolo Bonzini if (sock < 0) { 699b658c53dSPaolo Bonzini error_setg_errno(errp, errno, "Failed to create Unix socket"); 700baacf047SPaolo Bonzini return -1; 701baacf047SPaolo Bonzini } 702baacf047SPaolo Bonzini 703baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 704baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 7051856835dSDaniel P. Berrange if (saddr->path && strlen(saddr->path)) { 7061856835dSDaniel P. Berrange snprintf(un.sun_path, sizeof(un.sun_path), "%s", saddr->path); 707baacf047SPaolo Bonzini } else { 708b658c53dSPaolo Bonzini const char *tmpdir = getenv("TMPDIR"); 709b658c53dSPaolo Bonzini tmpdir = tmpdir ? tmpdir : "/tmp"; 710b658c53dSPaolo Bonzini if (snprintf(un.sun_path, sizeof(un.sun_path), "%s/qemu-socket-XXXXXX", 711b658c53dSPaolo Bonzini tmpdir) >= sizeof(un.sun_path)) { 712b658c53dSPaolo Bonzini error_setg_errno(errp, errno, 713b658c53dSPaolo Bonzini "TMPDIR environment variable (%s) too large", tmpdir); 714b658c53dSPaolo Bonzini goto err; 715b658c53dSPaolo Bonzini } 716b658c53dSPaolo Bonzini 717baacf047SPaolo Bonzini /* 718baacf047SPaolo Bonzini * This dummy fd usage silences the mktemp() unsecure warning. 719baacf047SPaolo Bonzini * Using mkstemp() doesn't make things more secure here 720baacf047SPaolo Bonzini * though. bind() complains about existing files, so we have 721baacf047SPaolo Bonzini * to unlink first and thus re-open the race window. The 722baacf047SPaolo Bonzini * worst case possible is bind() failing, i.e. a DoS attack. 723baacf047SPaolo Bonzini */ 724b658c53dSPaolo Bonzini fd = mkstemp(un.sun_path); 725b658c53dSPaolo Bonzini if (fd < 0) { 726b658c53dSPaolo Bonzini error_setg_errno(errp, errno, 727b658c53dSPaolo Bonzini "Failed to make a temporary socket name in %s", tmpdir); 728b658c53dSPaolo Bonzini goto err; 729b658c53dSPaolo Bonzini } 730b658c53dSPaolo Bonzini close(fd); 7311856835dSDaniel P. Berrange if (update_addr) { 7321856835dSDaniel P. Berrange g_free(saddr->path); 7331856835dSDaniel P. Berrange saddr->path = g_strdup(un.sun_path); 7341856835dSDaniel P. Berrange } 735baacf047SPaolo Bonzini } 736baacf047SPaolo Bonzini 737a2f31f18SPaolo Bonzini if (unlink(un.sun_path) < 0 && errno != ENOENT) { 7380ef705a2SCole Robinson error_setg_errno(errp, errno, 7390ef705a2SCole Robinson "Failed to unlink socket %s", un.sun_path); 7400ef705a2SCole Robinson goto err; 7410ef705a2SCole Robinson } 742baacf047SPaolo Bonzini if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { 743b658c53dSPaolo Bonzini error_setg_errno(errp, errno, "Failed to bind socket to %s", un.sun_path); 744baacf047SPaolo Bonzini goto err; 745baacf047SPaolo Bonzini } 746baacf047SPaolo Bonzini if (listen(sock, 1) < 0) { 747235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to listen on socket"); 748baacf047SPaolo Bonzini goto err; 749baacf047SPaolo Bonzini } 750baacf047SPaolo Bonzini 751baacf047SPaolo Bonzini return sock; 752baacf047SPaolo Bonzini 753baacf047SPaolo Bonzini err: 754baacf047SPaolo Bonzini closesocket(sock); 755baacf047SPaolo Bonzini return -1; 756baacf047SPaolo Bonzini } 757baacf047SPaolo Bonzini 7582942e420SDaniel P. Berrange static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp, 759baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 760baacf047SPaolo Bonzini { 761baacf047SPaolo Bonzini struct sockaddr_un un; 762baacf047SPaolo Bonzini ConnectState *connect_state = NULL; 763baacf047SPaolo Bonzini int sock, rc; 764baacf047SPaolo Bonzini 7652942e420SDaniel P. Berrange if (saddr->path == NULL) { 766312fd5f2SMarkus Armbruster error_setg(errp, "unix connect: no path specified"); 767baacf047SPaolo Bonzini return -1; 768baacf047SPaolo Bonzini } 769baacf047SPaolo Bonzini 770baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 771baacf047SPaolo Bonzini if (sock < 0) { 772235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 773baacf047SPaolo Bonzini return -1; 774baacf047SPaolo Bonzini } 775baacf047SPaolo Bonzini if (callback != NULL) { 776baacf047SPaolo Bonzini connect_state = g_malloc0(sizeof(*connect_state)); 777baacf047SPaolo Bonzini connect_state->callback = callback; 778baacf047SPaolo Bonzini connect_state->opaque = opaque; 779f9e8caccSStefan Hajnoczi qemu_set_nonblock(sock); 780baacf047SPaolo Bonzini } 781baacf047SPaolo Bonzini 782baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 783baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 7842942e420SDaniel P. Berrange snprintf(un.sun_path, sizeof(un.sun_path), "%s", saddr->path); 785baacf047SPaolo Bonzini 786baacf047SPaolo Bonzini /* connect to peer */ 787baacf047SPaolo Bonzini do { 788baacf047SPaolo Bonzini rc = 0; 789baacf047SPaolo Bonzini if (connect(sock, (struct sockaddr *) &un, sizeof(un)) < 0) { 790baacf047SPaolo Bonzini rc = -socket_error(); 791baacf047SPaolo Bonzini } 792baacf047SPaolo Bonzini } while (rc == -EINTR); 793baacf047SPaolo Bonzini 794baacf047SPaolo Bonzini if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { 795baacf047SPaolo Bonzini connect_state->fd = sock; 79682e1cc4bSFam Zheng qemu_set_fd_handler(sock, NULL, wait_for_connect, connect_state); 797baacf047SPaolo Bonzini return sock; 798baacf047SPaolo Bonzini } else if (rc >= 0) { 799baacf047SPaolo Bonzini /* non blocking socket immediate success, call callback */ 800baacf047SPaolo Bonzini if (callback != NULL) { 80151795029SCorey Minyard callback(sock, NULL, opaque); 802baacf047SPaolo Bonzini } 803baacf047SPaolo Bonzini } 804baacf047SPaolo Bonzini 805baacf047SPaolo Bonzini if (rc < 0) { 806235256a2SMarkus Armbruster error_setg_errno(errp, -rc, "Failed to connect socket"); 807baacf047SPaolo Bonzini close(sock); 808baacf047SPaolo Bonzini sock = -1; 809baacf047SPaolo Bonzini } 810baacf047SPaolo Bonzini 811baacf047SPaolo Bonzini g_free(connect_state); 812baacf047SPaolo Bonzini return sock; 813baacf047SPaolo Bonzini } 814baacf047SPaolo Bonzini 815baacf047SPaolo Bonzini #else 816baacf047SPaolo Bonzini 8171856835dSDaniel P. Berrange static int unix_listen_saddr(UnixSocketAddress *saddr, 8181856835dSDaniel P. Berrange bool update_addr, 8191856835dSDaniel P. Berrange Error **errp) 820baacf047SPaolo Bonzini { 821baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 822baacf047SPaolo Bonzini errno = ENOTSUP; 823baacf047SPaolo Bonzini return -1; 824baacf047SPaolo Bonzini } 825baacf047SPaolo Bonzini 8262942e420SDaniel P. Berrange static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp, 827baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 828baacf047SPaolo Bonzini { 829baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 830baacf047SPaolo Bonzini errno = ENOTSUP; 831baacf047SPaolo Bonzini return -1; 832baacf047SPaolo Bonzini } 833baacf047SPaolo Bonzini #endif 834baacf047SPaolo Bonzini 835baacf047SPaolo Bonzini /* compatibility wrapper */ 836baacf047SPaolo Bonzini int unix_listen(const char *str, char *ostr, int olen, Error **errp) 837baacf047SPaolo Bonzini { 838baacf047SPaolo Bonzini char *path, *optstr; 839baacf047SPaolo Bonzini int sock, len; 8401856835dSDaniel P. Berrange UnixSocketAddress *saddr; 841baacf047SPaolo Bonzini 8421856835dSDaniel P. Berrange saddr = g_new0(UnixSocketAddress, 1); 843baacf047SPaolo Bonzini 844baacf047SPaolo Bonzini optstr = strchr(str, ','); 845baacf047SPaolo Bonzini if (optstr) { 846baacf047SPaolo Bonzini len = optstr - str; 847baacf047SPaolo Bonzini if (len) { 848baacf047SPaolo Bonzini path = g_malloc(len+1); 849baacf047SPaolo Bonzini snprintf(path, len+1, "%.*s", len, str); 8501856835dSDaniel P. Berrange saddr->path = path; 851baacf047SPaolo Bonzini } 852baacf047SPaolo Bonzini } else { 8531856835dSDaniel P. Berrange saddr->path = g_strdup(str); 854baacf047SPaolo Bonzini } 855baacf047SPaolo Bonzini 8561856835dSDaniel P. Berrange sock = unix_listen_saddr(saddr, true, errp); 857baacf047SPaolo Bonzini 858baacf047SPaolo Bonzini if (sock != -1 && ostr) 8591856835dSDaniel P. Berrange snprintf(ostr, olen, "%s%s", saddr->path, optstr ? optstr : ""); 8601856835dSDaniel P. Berrange qapi_free_UnixSocketAddress(saddr); 861baacf047SPaolo Bonzini return sock; 862baacf047SPaolo Bonzini } 863baacf047SPaolo Bonzini 864baacf047SPaolo Bonzini int unix_connect(const char *path, Error **errp) 865baacf047SPaolo Bonzini { 8662942e420SDaniel P. Berrange UnixSocketAddress *saddr; 867baacf047SPaolo Bonzini int sock; 868baacf047SPaolo Bonzini 8692942e420SDaniel P. Berrange saddr = g_new0(UnixSocketAddress, 1); 8702942e420SDaniel P. Berrange saddr->path = g_strdup(path); 8712942e420SDaniel P. Berrange sock = unix_connect_saddr(saddr, errp, NULL, NULL); 8722942e420SDaniel P. Berrange qapi_free_UnixSocketAddress(saddr); 873baacf047SPaolo Bonzini return sock; 874baacf047SPaolo Bonzini } 875baacf047SPaolo Bonzini 876baacf047SPaolo Bonzini 877baacf047SPaolo Bonzini int unix_nonblocking_connect(const char *path, 878baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, 879baacf047SPaolo Bonzini void *opaque, Error **errp) 880baacf047SPaolo Bonzini { 8812942e420SDaniel P. Berrange UnixSocketAddress *saddr; 882baacf047SPaolo Bonzini int sock = -1; 883baacf047SPaolo Bonzini 884baacf047SPaolo Bonzini g_assert(callback != NULL); 885baacf047SPaolo Bonzini 8862942e420SDaniel P. Berrange saddr = g_new0(UnixSocketAddress, 1); 8872942e420SDaniel P. Berrange saddr->path = g_strdup(path); 8882942e420SDaniel P. Berrange sock = unix_connect_saddr(saddr, errp, callback, opaque); 8892942e420SDaniel P. Berrange qapi_free_UnixSocketAddress(saddr); 890baacf047SPaolo Bonzini return sock; 891baacf047SPaolo Bonzini } 892baacf047SPaolo Bonzini 893baacf047SPaolo Bonzini SocketAddress *socket_parse(const char *str, Error **errp) 894baacf047SPaolo Bonzini { 895afde3f8bSGerd Hoffmann SocketAddress *addr; 896baacf047SPaolo Bonzini 897afde3f8bSGerd Hoffmann addr = g_new0(SocketAddress, 1); 898baacf047SPaolo Bonzini if (strstart(str, "unix:", NULL)) { 899baacf047SPaolo Bonzini if (str[5] == '\0') { 900312fd5f2SMarkus Armbruster error_setg(errp, "invalid Unix socket address"); 901baacf047SPaolo Bonzini goto fail; 902baacf047SPaolo Bonzini } else { 9032d32addaSEric Blake addr->type = SOCKET_ADDRESS_KIND_UNIX; 9042d32addaSEric Blake addr->u.q_unix = g_new(UnixSocketAddress, 1); 9052d32addaSEric Blake addr->u.q_unix->path = g_strdup(str + 5); 906baacf047SPaolo Bonzini } 907baacf047SPaolo Bonzini } else if (strstart(str, "fd:", NULL)) { 908baacf047SPaolo Bonzini if (str[3] == '\0') { 909312fd5f2SMarkus Armbruster error_setg(errp, "invalid file descriptor address"); 910baacf047SPaolo Bonzini goto fail; 911baacf047SPaolo Bonzini } else { 9122d32addaSEric Blake addr->type = SOCKET_ADDRESS_KIND_FD; 9132d32addaSEric Blake addr->u.fd = g_new(String, 1); 9142d32addaSEric Blake addr->u.fd->str = g_strdup(str + 3); 915baacf047SPaolo Bonzini } 916baacf047SPaolo Bonzini } else { 9172d32addaSEric Blake addr->type = SOCKET_ADDRESS_KIND_INET; 9182d32addaSEric Blake addr->u.inet = inet_parse(str, errp); 9192d32addaSEric Blake if (addr->u.inet == NULL) { 920baacf047SPaolo Bonzini goto fail; 921baacf047SPaolo Bonzini } 922baacf047SPaolo Bonzini } 923baacf047SPaolo Bonzini return addr; 924baacf047SPaolo Bonzini 925baacf047SPaolo Bonzini fail: 926baacf047SPaolo Bonzini qapi_free_SocketAddress(addr); 927baacf047SPaolo Bonzini return NULL; 928baacf047SPaolo Bonzini } 929baacf047SPaolo Bonzini 930baacf047SPaolo Bonzini int socket_connect(SocketAddress *addr, Error **errp, 931baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 932baacf047SPaolo Bonzini { 933baacf047SPaolo Bonzini int fd; 934baacf047SPaolo Bonzini 9352d32addaSEric Blake switch (addr->type) { 936baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_INET: 9372942e420SDaniel P. Berrange fd = inet_connect_saddr(addr->u.inet, errp, callback, opaque); 938baacf047SPaolo Bonzini break; 939baacf047SPaolo Bonzini 940baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_UNIX: 9412942e420SDaniel P. Berrange fd = unix_connect_saddr(addr->u.q_unix, errp, callback, opaque); 942baacf047SPaolo Bonzini break; 943baacf047SPaolo Bonzini 944baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_FD: 9452d32addaSEric Blake fd = monitor_get_fd(cur_mon, addr->u.fd->str, errp); 946d1ec72a4SGerd Hoffmann if (fd >= 0 && callback) { 9471a751ebfSStefan Hajnoczi qemu_set_nonblock(fd); 94851795029SCorey Minyard callback(fd, NULL, opaque); 949baacf047SPaolo Bonzini } 950baacf047SPaolo Bonzini break; 951baacf047SPaolo Bonzini 952baacf047SPaolo Bonzini default: 953baacf047SPaolo Bonzini abort(); 954baacf047SPaolo Bonzini } 955baacf047SPaolo Bonzini return fd; 956baacf047SPaolo Bonzini } 957baacf047SPaolo Bonzini 958baacf047SPaolo Bonzini int socket_listen(SocketAddress *addr, Error **errp) 959baacf047SPaolo Bonzini { 960baacf047SPaolo Bonzini int fd; 961baacf047SPaolo Bonzini 9622d32addaSEric Blake switch (addr->type) { 963baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_INET: 9641856835dSDaniel P. Berrange fd = inet_listen_saddr(addr->u.inet, 0, false, errp); 965baacf047SPaolo Bonzini break; 966baacf047SPaolo Bonzini 967baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_UNIX: 9681856835dSDaniel P. Berrange fd = unix_listen_saddr(addr->u.q_unix, false, errp); 969baacf047SPaolo Bonzini break; 970baacf047SPaolo Bonzini 971baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_FD: 9722d32addaSEric Blake fd = monitor_get_fd(cur_mon, addr->u.fd->str, errp); 973baacf047SPaolo Bonzini break; 974baacf047SPaolo Bonzini 975baacf047SPaolo Bonzini default: 976baacf047SPaolo Bonzini abort(); 977baacf047SPaolo Bonzini } 978baacf047SPaolo Bonzini return fd; 979baacf047SPaolo Bonzini } 980baacf047SPaolo Bonzini 9813ecc059dSGerd Hoffmann int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) 9823ecc059dSGerd Hoffmann { 9833ecc059dSGerd Hoffmann int fd; 9843ecc059dSGerd Hoffmann 9852d32addaSEric Blake switch (remote->type) { 9863ecc059dSGerd Hoffmann case SOCKET_ADDRESS_KIND_INET: 9878b39910eSDaniel P. Berrange fd = inet_dgram_saddr(remote->u.inet, local ? local->u.inet : NULL, errp); 9883ecc059dSGerd Hoffmann break; 9893ecc059dSGerd Hoffmann 9903ecc059dSGerd Hoffmann default: 9913ecc059dSGerd Hoffmann error_setg(errp, "socket type unsupported for datagram"); 9927a5b6af1SGerd Hoffmann fd = -1; 9933ecc059dSGerd Hoffmann } 9943ecc059dSGerd Hoffmann return fd; 9953ecc059dSGerd Hoffmann } 99617c55decSDaniel P. Berrange 99717c55decSDaniel P. Berrange 99817c55decSDaniel P. Berrange static SocketAddress * 99917c55decSDaniel P. Berrange socket_sockaddr_to_address_inet(struct sockaddr_storage *sa, 100017c55decSDaniel P. Berrange socklen_t salen, 100117c55decSDaniel P. Berrange Error **errp) 100217c55decSDaniel P. Berrange { 100317c55decSDaniel P. Berrange char host[NI_MAXHOST]; 100417c55decSDaniel P. Berrange char serv[NI_MAXSERV]; 100517c55decSDaniel P. Berrange SocketAddress *addr; 100617c55decSDaniel P. Berrange int ret; 100717c55decSDaniel P. Berrange 100817c55decSDaniel P. Berrange ret = getnameinfo((struct sockaddr *)sa, salen, 100917c55decSDaniel P. Berrange host, sizeof(host), 101017c55decSDaniel P. Berrange serv, sizeof(serv), 101117c55decSDaniel P. Berrange NI_NUMERICHOST | NI_NUMERICSERV); 101217c55decSDaniel P. Berrange if (ret != 0) { 101317c55decSDaniel P. Berrange error_setg(errp, "Cannot format numeric socket address: %s", 101417c55decSDaniel P. Berrange gai_strerror(ret)); 101517c55decSDaniel P. Berrange return NULL; 101617c55decSDaniel P. Berrange } 101717c55decSDaniel P. Berrange 101817c55decSDaniel P. Berrange addr = g_new0(SocketAddress, 1); 10192d32addaSEric Blake addr->type = SOCKET_ADDRESS_KIND_INET; 10202d32addaSEric Blake addr->u.inet = g_new0(InetSocketAddress, 1); 10212d32addaSEric Blake addr->u.inet->host = g_strdup(host); 10222d32addaSEric Blake addr->u.inet->port = g_strdup(serv); 102317c55decSDaniel P. Berrange if (sa->ss_family == AF_INET) { 10242d32addaSEric Blake addr->u.inet->has_ipv4 = addr->u.inet->ipv4 = true; 102517c55decSDaniel P. Berrange } else { 10262d32addaSEric Blake addr->u.inet->has_ipv6 = addr->u.inet->ipv6 = true; 102717c55decSDaniel P. Berrange } 102817c55decSDaniel P. Berrange 102917c55decSDaniel P. Berrange return addr; 103017c55decSDaniel P. Berrange } 103117c55decSDaniel P. Berrange 103217c55decSDaniel P. Berrange 103317c55decSDaniel P. Berrange #ifndef WIN32 103417c55decSDaniel P. Berrange static SocketAddress * 103517c55decSDaniel P. Berrange socket_sockaddr_to_address_unix(struct sockaddr_storage *sa, 103617c55decSDaniel P. Berrange socklen_t salen, 103717c55decSDaniel P. Berrange Error **errp) 103817c55decSDaniel P. Berrange { 103917c55decSDaniel P. Berrange SocketAddress *addr; 104017c55decSDaniel P. Berrange struct sockaddr_un *su = (struct sockaddr_un *)sa; 104117c55decSDaniel P. Berrange 104217c55decSDaniel P. Berrange addr = g_new0(SocketAddress, 1); 10432d32addaSEric Blake addr->type = SOCKET_ADDRESS_KIND_UNIX; 10442d32addaSEric Blake addr->u.q_unix = g_new0(UnixSocketAddress, 1); 104517c55decSDaniel P. Berrange if (su->sun_path[0]) { 10462d32addaSEric Blake addr->u.q_unix->path = g_strndup(su->sun_path, 104717c55decSDaniel P. Berrange sizeof(su->sun_path)); 104817c55decSDaniel P. Berrange } 104917c55decSDaniel P. Berrange 105017c55decSDaniel P. Berrange return addr; 105117c55decSDaniel P. Berrange } 105217c55decSDaniel P. Berrange #endif /* WIN32 */ 105317c55decSDaniel P. Berrange 1054559607eaSDaniel P. Berrange SocketAddress * 105517c55decSDaniel P. Berrange socket_sockaddr_to_address(struct sockaddr_storage *sa, 105617c55decSDaniel P. Berrange socklen_t salen, 105717c55decSDaniel P. Berrange Error **errp) 105817c55decSDaniel P. Berrange { 105917c55decSDaniel P. Berrange switch (sa->ss_family) { 106017c55decSDaniel P. Berrange case AF_INET: 106117c55decSDaniel P. Berrange case AF_INET6: 106217c55decSDaniel P. Berrange return socket_sockaddr_to_address_inet(sa, salen, errp); 106317c55decSDaniel P. Berrange 106417c55decSDaniel P. Berrange #ifndef WIN32 106517c55decSDaniel P. Berrange case AF_UNIX: 106617c55decSDaniel P. Berrange return socket_sockaddr_to_address_unix(sa, salen, errp); 106717c55decSDaniel P. Berrange #endif /* WIN32 */ 106817c55decSDaniel P. Berrange 106917c55decSDaniel P. Berrange default: 107017c55decSDaniel P. Berrange error_setg(errp, "socket family %d unsupported", 107117c55decSDaniel P. Berrange sa->ss_family); 107217c55decSDaniel P. Berrange return NULL; 107317c55decSDaniel P. Berrange } 107417c55decSDaniel P. Berrange return 0; 107517c55decSDaniel P. Berrange } 107617c55decSDaniel P. Berrange 107717c55decSDaniel P. Berrange 107817c55decSDaniel P. Berrange SocketAddress *socket_local_address(int fd, Error **errp) 107917c55decSDaniel P. Berrange { 108017c55decSDaniel P. Berrange struct sockaddr_storage ss; 108117c55decSDaniel P. Berrange socklen_t sslen = sizeof(ss); 108217c55decSDaniel P. Berrange 108317c55decSDaniel P. Berrange if (getsockname(fd, (struct sockaddr *)&ss, &sslen) < 0) { 108417c55decSDaniel P. Berrange error_setg_errno(errp, socket_error(), "%s", 108517c55decSDaniel P. Berrange "Unable to query local socket address"); 108617c55decSDaniel P. Berrange return NULL; 108717c55decSDaniel P. Berrange } 108817c55decSDaniel P. Berrange 108917c55decSDaniel P. Berrange return socket_sockaddr_to_address(&ss, sslen, errp); 109017c55decSDaniel P. Berrange } 109117c55decSDaniel P. Berrange 109217c55decSDaniel P. Berrange 109317c55decSDaniel P. Berrange SocketAddress *socket_remote_address(int fd, Error **errp) 109417c55decSDaniel P. Berrange { 109517c55decSDaniel P. Berrange struct sockaddr_storage ss; 109617c55decSDaniel P. Berrange socklen_t sslen = sizeof(ss); 109717c55decSDaniel P. Berrange 109817c55decSDaniel P. Berrange if (getpeername(fd, (struct sockaddr *)&ss, &sslen) < 0) { 109917c55decSDaniel P. Berrange error_setg_errno(errp, socket_error(), "%s", 110017c55decSDaniel P. Berrange "Unable to query remote socket address"); 110117c55decSDaniel P. Berrange return NULL; 110217c55decSDaniel P. Berrange } 110317c55decSDaniel P. Berrange 110417c55decSDaniel P. Berrange return socket_sockaddr_to_address(&ss, sslen, errp); 110517c55decSDaniel P. Berrange } 11062a8e21c7SDaniel P. Berrange 11072a8e21c7SDaniel P. Berrange 11082a8e21c7SDaniel P. Berrange void qapi_copy_SocketAddress(SocketAddress **p_dest, 11092a8e21c7SDaniel P. Berrange SocketAddress *src) 11102a8e21c7SDaniel P. Berrange { 11112a8e21c7SDaniel P. Berrange QmpOutputVisitor *qov; 11122a8e21c7SDaniel P. Berrange QmpInputVisitor *qiv; 11132a8e21c7SDaniel P. Berrange Visitor *ov, *iv; 11142a8e21c7SDaniel P. Berrange QObject *obj; 11152a8e21c7SDaniel P. Berrange 11162a8e21c7SDaniel P. Berrange *p_dest = NULL; 11172a8e21c7SDaniel P. Berrange 11182a8e21c7SDaniel P. Berrange qov = qmp_output_visitor_new(); 11192a8e21c7SDaniel P. Berrange ov = qmp_output_get_visitor(qov); 112051e72bc1SEric Blake visit_type_SocketAddress(ov, NULL, &src, &error_abort); 11212a8e21c7SDaniel P. Berrange obj = qmp_output_get_qobject(qov); 11222a8e21c7SDaniel P. Berrange qmp_output_visitor_cleanup(qov); 11232a8e21c7SDaniel P. Berrange if (!obj) { 11242a8e21c7SDaniel P. Berrange return; 11252a8e21c7SDaniel P. Berrange } 11262a8e21c7SDaniel P. Berrange 11272a8e21c7SDaniel P. Berrange qiv = qmp_input_visitor_new(obj); 11282a8e21c7SDaniel P. Berrange iv = qmp_input_get_visitor(qiv); 112951e72bc1SEric Blake visit_type_SocketAddress(iv, NULL, p_dest, &error_abort); 11302a8e21c7SDaniel P. Berrange qmp_input_visitor_cleanup(qiv); 11312a8e21c7SDaniel P. Berrange qobject_decref(obj); 11322a8e21c7SDaniel P. Berrange } 1133