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 */ 18baacf047SPaolo Bonzini #include <stdio.h> 19baacf047SPaolo Bonzini #include <stdlib.h> 20baacf047SPaolo Bonzini #include <string.h> 21baacf047SPaolo Bonzini #include <ctype.h> 22baacf047SPaolo Bonzini #include <errno.h> 23baacf047SPaolo Bonzini #include <unistd.h> 24baacf047SPaolo Bonzini 25baacf047SPaolo Bonzini #include "monitor/monitor.h" 26baacf047SPaolo Bonzini #include "qemu/sockets.h" 27baacf047SPaolo Bonzini #include "qemu/main-loop.h" 28baacf047SPaolo Bonzini 29baacf047SPaolo Bonzini #ifndef AI_ADDRCONFIG 30baacf047SPaolo Bonzini # define AI_ADDRCONFIG 0 31baacf047SPaolo Bonzini #endif 32baacf047SPaolo Bonzini 33e62be888SKevin Wolf /* used temporarily until all users are converted to QemuOpts */ 34e62be888SKevin Wolf QemuOptsList socket_optslist = { 35e62be888SKevin Wolf .name = "socket", 36e62be888SKevin Wolf .head = QTAILQ_HEAD_INITIALIZER(socket_optslist.head), 37baacf047SPaolo Bonzini .desc = { 38baacf047SPaolo Bonzini { 39baacf047SPaolo Bonzini .name = "path", 40baacf047SPaolo Bonzini .type = QEMU_OPT_STRING, 41baacf047SPaolo Bonzini },{ 42baacf047SPaolo Bonzini .name = "host", 43baacf047SPaolo Bonzini .type = QEMU_OPT_STRING, 44baacf047SPaolo Bonzini },{ 45baacf047SPaolo Bonzini .name = "port", 46baacf047SPaolo Bonzini .type = QEMU_OPT_STRING, 47baacf047SPaolo Bonzini },{ 48baacf047SPaolo Bonzini .name = "to", 49baacf047SPaolo Bonzini .type = QEMU_OPT_NUMBER, 50baacf047SPaolo Bonzini },{ 51baacf047SPaolo Bonzini .name = "ipv4", 52baacf047SPaolo Bonzini .type = QEMU_OPT_BOOL, 53baacf047SPaolo Bonzini },{ 54baacf047SPaolo Bonzini .name = "ipv6", 55baacf047SPaolo Bonzini .type = QEMU_OPT_BOOL, 56baacf047SPaolo Bonzini }, 57baacf047SPaolo Bonzini { /* end if list */ } 58baacf047SPaolo Bonzini }, 59baacf047SPaolo Bonzini }; 60baacf047SPaolo Bonzini 61baacf047SPaolo Bonzini static int inet_getport(struct addrinfo *e) 62baacf047SPaolo Bonzini { 63baacf047SPaolo Bonzini struct sockaddr_in *i4; 64baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 65baacf047SPaolo Bonzini 66baacf047SPaolo Bonzini switch (e->ai_family) { 67baacf047SPaolo Bonzini case PF_INET6: 68baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 69baacf047SPaolo Bonzini return ntohs(i6->sin6_port); 70baacf047SPaolo Bonzini case PF_INET: 71baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 72baacf047SPaolo Bonzini return ntohs(i4->sin_port); 73baacf047SPaolo Bonzini default: 74baacf047SPaolo Bonzini return 0; 75baacf047SPaolo Bonzini } 76baacf047SPaolo Bonzini } 77baacf047SPaolo Bonzini 78baacf047SPaolo Bonzini static void inet_setport(struct addrinfo *e, int port) 79baacf047SPaolo Bonzini { 80baacf047SPaolo Bonzini struct sockaddr_in *i4; 81baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 82baacf047SPaolo Bonzini 83baacf047SPaolo Bonzini switch (e->ai_family) { 84baacf047SPaolo Bonzini case PF_INET6: 85baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 86baacf047SPaolo Bonzini i6->sin6_port = htons(port); 87baacf047SPaolo Bonzini break; 88baacf047SPaolo Bonzini case PF_INET: 89baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 90baacf047SPaolo Bonzini i4->sin_port = htons(port); 91baacf047SPaolo Bonzini break; 92baacf047SPaolo Bonzini } 93baacf047SPaolo Bonzini } 94baacf047SPaolo Bonzini 95a589569fSWenchao Xia NetworkAddressFamily inet_netfamily(int family) 96a589569fSWenchao Xia { 97a589569fSWenchao Xia switch (family) { 98a589569fSWenchao Xia case PF_INET6: return NETWORK_ADDRESS_FAMILY_IPV6; 99a589569fSWenchao Xia case PF_INET: return NETWORK_ADDRESS_FAMILY_IPV4; 100a589569fSWenchao Xia case PF_UNIX: return NETWORK_ADDRESS_FAMILY_UNIX; 101a589569fSWenchao Xia } 102a589569fSWenchao Xia return NETWORK_ADDRESS_FAMILY_UNKNOWN; 103a589569fSWenchao Xia } 104a589569fSWenchao Xia 105baacf047SPaolo Bonzini int inet_listen_opts(QemuOpts *opts, int port_offset, Error **errp) 106baacf047SPaolo Bonzini { 107baacf047SPaolo Bonzini struct addrinfo ai,*res,*e; 108baacf047SPaolo Bonzini const char *addr; 109baacf047SPaolo Bonzini char port[33]; 110baacf047SPaolo Bonzini char uaddr[INET6_ADDRSTRLEN+1]; 111baacf047SPaolo Bonzini char uport[33]; 112baacf047SPaolo Bonzini int slisten, rc, to, port_min, port_max, p; 113baacf047SPaolo Bonzini 114baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 115baacf047SPaolo Bonzini ai.ai_flags = AI_PASSIVE | AI_ADDRCONFIG; 116baacf047SPaolo Bonzini ai.ai_family = PF_UNSPEC; 117baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 118baacf047SPaolo Bonzini 119baacf047SPaolo Bonzini if ((qemu_opt_get(opts, "host") == NULL) || 120baacf047SPaolo Bonzini (qemu_opt_get(opts, "port") == NULL)) { 121baacf047SPaolo Bonzini error_setg(errp, "host and/or port not specified"); 122baacf047SPaolo Bonzini return -1; 123baacf047SPaolo Bonzini } 124baacf047SPaolo Bonzini pstrcpy(port, sizeof(port), qemu_opt_get(opts, "port")); 125baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "host"); 126baacf047SPaolo Bonzini 127baacf047SPaolo Bonzini to = qemu_opt_get_number(opts, "to", 0); 128baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv4", 0)) 129baacf047SPaolo Bonzini ai.ai_family = PF_INET; 130baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) 131baacf047SPaolo Bonzini ai.ai_family = PF_INET6; 132baacf047SPaolo Bonzini 133baacf047SPaolo Bonzini /* lookup */ 1348bc89127SGerd Hoffmann if (port_offset) { 1358bc89127SGerd Hoffmann unsigned long long baseport; 1368bc89127SGerd Hoffmann if (parse_uint_full(port, &baseport, 10) < 0) { 1378bc89127SGerd Hoffmann error_setg(errp, "can't convert to a number: %s", port); 1388bc89127SGerd Hoffmann return -1; 1398bc89127SGerd Hoffmann } 1408bc89127SGerd Hoffmann if (baseport > 65535 || 1418bc89127SGerd Hoffmann baseport + port_offset > 65535) { 1428bc89127SGerd Hoffmann error_setg(errp, "port %s out of range", port); 1438bc89127SGerd Hoffmann return -1; 1448bc89127SGerd Hoffmann } 1458bc89127SGerd Hoffmann snprintf(port, sizeof(port), "%d", (int)baseport + port_offset); 1468bc89127SGerd Hoffmann } 147baacf047SPaolo Bonzini rc = getaddrinfo(strlen(addr) ? addr : NULL, port, &ai, &res); 148baacf047SPaolo Bonzini if (rc != 0) { 149baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 150baacf047SPaolo Bonzini gai_strerror(rc)); 151baacf047SPaolo Bonzini return -1; 152baacf047SPaolo Bonzini } 153baacf047SPaolo Bonzini 154baacf047SPaolo Bonzini /* create socket + bind */ 155baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 156baacf047SPaolo Bonzini getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, 157baacf047SPaolo Bonzini uaddr,INET6_ADDRSTRLEN,uport,32, 158baacf047SPaolo Bonzini NI_NUMERICHOST | NI_NUMERICSERV); 159baacf047SPaolo Bonzini slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); 160baacf047SPaolo Bonzini if (slisten < 0) { 161baacf047SPaolo Bonzini if (!e->ai_next) { 162235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 163baacf047SPaolo Bonzini } 164baacf047SPaolo Bonzini continue; 165baacf047SPaolo Bonzini } 166baacf047SPaolo Bonzini 16704fd1c78SSebastian Ottlik socket_set_fast_reuse(slisten); 168baacf047SPaolo Bonzini #ifdef IPV6_V6ONLY 169baacf047SPaolo Bonzini if (e->ai_family == PF_INET6) { 170baacf047SPaolo Bonzini /* listen on both ipv4 and ipv6 */ 171f9b5426fSPeter Maydell const int off = 0; 1729957fc7fSStefan Weil qemu_setsockopt(slisten, IPPROTO_IPV6, IPV6_V6ONLY, &off, 173baacf047SPaolo Bonzini sizeof(off)); 174baacf047SPaolo Bonzini } 175baacf047SPaolo Bonzini #endif 176baacf047SPaolo Bonzini 177baacf047SPaolo Bonzini port_min = inet_getport(e); 178baacf047SPaolo Bonzini port_max = to ? to + port_offset : port_min; 179baacf047SPaolo Bonzini for (p = port_min; p <= port_max; p++) { 180baacf047SPaolo Bonzini inet_setport(e, p); 181baacf047SPaolo Bonzini if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) { 182baacf047SPaolo Bonzini goto listen; 183baacf047SPaolo Bonzini } 184baacf047SPaolo Bonzini if (p == port_max) { 185baacf047SPaolo Bonzini if (!e->ai_next) { 186235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to bind socket"); 187baacf047SPaolo Bonzini } 188baacf047SPaolo Bonzini } 189baacf047SPaolo Bonzini } 190baacf047SPaolo Bonzini closesocket(slisten); 191baacf047SPaolo Bonzini } 192baacf047SPaolo Bonzini freeaddrinfo(res); 193baacf047SPaolo Bonzini return -1; 194baacf047SPaolo Bonzini 195baacf047SPaolo Bonzini listen: 196baacf047SPaolo Bonzini if (listen(slisten,1) != 0) { 197235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to listen on socket"); 198baacf047SPaolo Bonzini closesocket(slisten); 199baacf047SPaolo Bonzini freeaddrinfo(res); 200baacf047SPaolo Bonzini return -1; 201baacf047SPaolo Bonzini } 202baacf047SPaolo Bonzini snprintf(uport, sizeof(uport), "%d", inet_getport(e) - port_offset); 203baacf047SPaolo Bonzini qemu_opt_set(opts, "host", uaddr); 204baacf047SPaolo Bonzini qemu_opt_set(opts, "port", uport); 205baacf047SPaolo Bonzini qemu_opt_set(opts, "ipv6", (e->ai_family == PF_INET6) ? "on" : "off"); 206baacf047SPaolo Bonzini qemu_opt_set(opts, "ipv4", (e->ai_family != PF_INET6) ? "on" : "off"); 207baacf047SPaolo Bonzini freeaddrinfo(res); 208baacf047SPaolo Bonzini return slisten; 209baacf047SPaolo Bonzini } 210baacf047SPaolo Bonzini 211baacf047SPaolo Bonzini #ifdef _WIN32 212baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 213baacf047SPaolo Bonzini ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) 214baacf047SPaolo Bonzini #else 215baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 216baacf047SPaolo Bonzini ((rc) == -EINPROGRESS) 217baacf047SPaolo Bonzini #endif 218baacf047SPaolo Bonzini 219baacf047SPaolo Bonzini /* Struct to store connect state for non blocking connect */ 220baacf047SPaolo Bonzini typedef struct ConnectState { 221baacf047SPaolo Bonzini int fd; 222baacf047SPaolo Bonzini struct addrinfo *addr_list; 223baacf047SPaolo Bonzini struct addrinfo *current_addr; 224baacf047SPaolo Bonzini NonBlockingConnectHandler *callback; 225baacf047SPaolo Bonzini void *opaque; 226baacf047SPaolo Bonzini } ConnectState; 227baacf047SPaolo Bonzini 228baacf047SPaolo Bonzini static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, 229baacf047SPaolo Bonzini ConnectState *connect_state, Error **errp); 230baacf047SPaolo Bonzini 231baacf047SPaolo Bonzini static void wait_for_connect(void *opaque) 232baacf047SPaolo Bonzini { 233baacf047SPaolo Bonzini ConnectState *s = opaque; 234baacf047SPaolo Bonzini int val = 0, rc = 0; 235baacf047SPaolo Bonzini socklen_t valsize = sizeof(val); 236baacf047SPaolo Bonzini bool in_progress; 23751795029SCorey Minyard Error *err = NULL; 238baacf047SPaolo Bonzini 239baacf047SPaolo Bonzini qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL); 240baacf047SPaolo Bonzini 241baacf047SPaolo Bonzini do { 2429957fc7fSStefan Weil rc = qemu_getsockopt(s->fd, SOL_SOCKET, SO_ERROR, &val, &valsize); 243baacf047SPaolo Bonzini } while (rc == -1 && socket_error() == EINTR); 244baacf047SPaolo Bonzini 245baacf047SPaolo Bonzini /* update rc to contain error */ 246baacf047SPaolo Bonzini if (!rc && val) { 247baacf047SPaolo Bonzini rc = -1; 24851795029SCorey Minyard errno = val; 249baacf047SPaolo Bonzini } 250baacf047SPaolo Bonzini 251baacf047SPaolo Bonzini /* connect error */ 252baacf047SPaolo Bonzini if (rc < 0) { 25351795029SCorey Minyard error_setg_errno(&err, errno, "Error connecting to socket"); 254baacf047SPaolo Bonzini closesocket(s->fd); 255baacf047SPaolo Bonzini s->fd = rc; 256baacf047SPaolo Bonzini } 257baacf047SPaolo Bonzini 258baacf047SPaolo Bonzini /* try to connect to the next address on the list */ 259baacf047SPaolo Bonzini if (s->current_addr) { 260baacf047SPaolo Bonzini while (s->current_addr->ai_next != NULL && s->fd < 0) { 261baacf047SPaolo Bonzini s->current_addr = s->current_addr->ai_next; 262baacf047SPaolo Bonzini s->fd = inet_connect_addr(s->current_addr, &in_progress, s, NULL); 26351795029SCorey Minyard if (s->fd < 0) { 26451795029SCorey Minyard error_free(err); 26551795029SCorey Minyard err = NULL; 26651795029SCorey Minyard error_setg_errno(&err, errno, "Unable to start socket connect"); 26751795029SCorey Minyard } 268baacf047SPaolo Bonzini /* connect in progress */ 269baacf047SPaolo Bonzini if (in_progress) { 27051795029SCorey Minyard goto out; 271baacf047SPaolo Bonzini } 272baacf047SPaolo Bonzini } 273baacf047SPaolo Bonzini 274baacf047SPaolo Bonzini freeaddrinfo(s->addr_list); 275baacf047SPaolo Bonzini } 276baacf047SPaolo Bonzini 277baacf047SPaolo Bonzini if (s->callback) { 27851795029SCorey Minyard s->callback(s->fd, err, s->opaque); 279baacf047SPaolo Bonzini } 280baacf047SPaolo Bonzini g_free(s); 28151795029SCorey Minyard out: 28251795029SCorey Minyard error_free(err); 283baacf047SPaolo Bonzini } 284baacf047SPaolo Bonzini 285baacf047SPaolo Bonzini static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, 286baacf047SPaolo Bonzini ConnectState *connect_state, Error **errp) 287baacf047SPaolo Bonzini { 288baacf047SPaolo Bonzini int sock, rc; 289baacf047SPaolo Bonzini 290baacf047SPaolo Bonzini *in_progress = false; 291baacf047SPaolo Bonzini 292baacf047SPaolo Bonzini sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); 293baacf047SPaolo Bonzini if (sock < 0) { 294235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 295baacf047SPaolo Bonzini return -1; 296baacf047SPaolo Bonzini } 29704fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 298baacf047SPaolo Bonzini if (connect_state != NULL) { 299f9e8caccSStefan Hajnoczi qemu_set_nonblock(sock); 300baacf047SPaolo Bonzini } 301baacf047SPaolo Bonzini /* connect to peer */ 302baacf047SPaolo Bonzini do { 303baacf047SPaolo Bonzini rc = 0; 304baacf047SPaolo Bonzini if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { 305baacf047SPaolo Bonzini rc = -socket_error(); 306baacf047SPaolo Bonzini } 307baacf047SPaolo Bonzini } while (rc == -EINTR); 308baacf047SPaolo Bonzini 309baacf047SPaolo Bonzini if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { 310baacf047SPaolo Bonzini connect_state->fd = sock; 311baacf047SPaolo Bonzini qemu_set_fd_handler2(sock, NULL, NULL, wait_for_connect, 312baacf047SPaolo Bonzini connect_state); 313baacf047SPaolo Bonzini *in_progress = true; 314baacf047SPaolo Bonzini } else if (rc < 0) { 315235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to connect socket"); 316baacf047SPaolo Bonzini closesocket(sock); 317baacf047SPaolo Bonzini return -1; 318baacf047SPaolo Bonzini } 319baacf047SPaolo Bonzini return sock; 320baacf047SPaolo Bonzini } 321baacf047SPaolo Bonzini 322baacf047SPaolo Bonzini static struct addrinfo *inet_parse_connect_opts(QemuOpts *opts, Error **errp) 323baacf047SPaolo Bonzini { 324baacf047SPaolo Bonzini struct addrinfo ai, *res; 325baacf047SPaolo Bonzini int rc; 326baacf047SPaolo Bonzini const char *addr; 327baacf047SPaolo Bonzini const char *port; 328baacf047SPaolo Bonzini 329baacf047SPaolo Bonzini memset(&ai, 0, sizeof(ai)); 330baacf047SPaolo Bonzini 331baacf047SPaolo Bonzini ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; 332baacf047SPaolo Bonzini ai.ai_family = PF_UNSPEC; 333baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 334baacf047SPaolo Bonzini 335baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "host"); 336baacf047SPaolo Bonzini port = qemu_opt_get(opts, "port"); 337baacf047SPaolo Bonzini if (addr == NULL || port == NULL) { 338baacf047SPaolo Bonzini error_setg(errp, "host and/or port not specified"); 339baacf047SPaolo Bonzini return NULL; 340baacf047SPaolo Bonzini } 341baacf047SPaolo Bonzini 342baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv4", 0)) { 343baacf047SPaolo Bonzini ai.ai_family = PF_INET; 344baacf047SPaolo Bonzini } 345baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) { 346baacf047SPaolo Bonzini ai.ai_family = PF_INET6; 347baacf047SPaolo Bonzini } 348baacf047SPaolo Bonzini 349baacf047SPaolo Bonzini /* lookup */ 350baacf047SPaolo Bonzini rc = getaddrinfo(addr, port, &ai, &res); 351baacf047SPaolo Bonzini if (rc != 0) { 352baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 353baacf047SPaolo Bonzini gai_strerror(rc)); 354baacf047SPaolo Bonzini return NULL; 355baacf047SPaolo Bonzini } 356baacf047SPaolo Bonzini return res; 357baacf047SPaolo Bonzini } 358baacf047SPaolo Bonzini 359baacf047SPaolo Bonzini /** 360baacf047SPaolo Bonzini * Create a socket and connect it to an address. 361baacf047SPaolo Bonzini * 362baacf047SPaolo Bonzini * @opts: QEMU options, recognized parameters strings "host" and "port", 363baacf047SPaolo Bonzini * bools "ipv4" and "ipv6". 364baacf047SPaolo Bonzini * @errp: set on error 365baacf047SPaolo Bonzini * @callback: callback function for non-blocking connect 366baacf047SPaolo Bonzini * @opaque: opaque for callback function 367baacf047SPaolo Bonzini * 368baacf047SPaolo Bonzini * Returns: -1 on error, file descriptor on success. 369baacf047SPaolo Bonzini * 370baacf047SPaolo Bonzini * If @callback is non-null, the connect is non-blocking. If this 371baacf047SPaolo Bonzini * function succeeds, callback will be called when the connection 372baacf047SPaolo Bonzini * completes, with the file descriptor on success, or -1 on error. 373baacf047SPaolo Bonzini */ 374baacf047SPaolo Bonzini int inet_connect_opts(QemuOpts *opts, Error **errp, 375baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 376baacf047SPaolo Bonzini { 3773f9286b7SMarkus Armbruster Error *local_err = NULL; 378baacf047SPaolo Bonzini struct addrinfo *res, *e; 379baacf047SPaolo Bonzini int sock = -1; 380baacf047SPaolo Bonzini bool in_progress; 381baacf047SPaolo Bonzini ConnectState *connect_state = NULL; 382baacf047SPaolo Bonzini 383baacf047SPaolo Bonzini res = inet_parse_connect_opts(opts, errp); 384baacf047SPaolo Bonzini if (!res) { 385baacf047SPaolo Bonzini return -1; 386baacf047SPaolo Bonzini } 387baacf047SPaolo Bonzini 388baacf047SPaolo Bonzini if (callback != NULL) { 389baacf047SPaolo Bonzini connect_state = g_malloc0(sizeof(*connect_state)); 390baacf047SPaolo Bonzini connect_state->addr_list = res; 391baacf047SPaolo Bonzini connect_state->callback = callback; 392baacf047SPaolo Bonzini connect_state->opaque = opaque; 393baacf047SPaolo Bonzini } 394baacf047SPaolo Bonzini 395baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 3963f9286b7SMarkus Armbruster error_free(local_err); 3973f9286b7SMarkus Armbruster local_err = NULL; 398baacf047SPaolo Bonzini if (connect_state != NULL) { 399baacf047SPaolo Bonzini connect_state->current_addr = e; 400baacf047SPaolo Bonzini } 4013f9286b7SMarkus Armbruster sock = inet_connect_addr(e, &in_progress, connect_state, &local_err); 4023f9286b7SMarkus Armbruster if (sock >= 0) { 403baacf047SPaolo Bonzini break; 404baacf047SPaolo Bonzini } 405baacf047SPaolo Bonzini } 4063f9286b7SMarkus Armbruster 4073f9286b7SMarkus Armbruster if (sock < 0) { 4083f9286b7SMarkus Armbruster error_propagate(errp, local_err); 4093f9286b7SMarkus Armbruster } else if (in_progress) { 4103f9286b7SMarkus Armbruster /* wait_for_connect() will do the rest */ 4113f9286b7SMarkus Armbruster return sock; 4123f9286b7SMarkus Armbruster } else { 4133f9286b7SMarkus Armbruster if (callback) { 41451795029SCorey Minyard callback(sock, NULL, opaque); 4153f9286b7SMarkus Armbruster } 4163f9286b7SMarkus Armbruster } 417baacf047SPaolo Bonzini g_free(connect_state); 418baacf047SPaolo Bonzini freeaddrinfo(res); 419baacf047SPaolo Bonzini return sock; 420baacf047SPaolo Bonzini } 421baacf047SPaolo Bonzini 422baacf047SPaolo Bonzini int inet_dgram_opts(QemuOpts *opts, Error **errp) 423baacf047SPaolo Bonzini { 424baacf047SPaolo Bonzini struct addrinfo ai, *peer = NULL, *local = NULL; 425baacf047SPaolo Bonzini const char *addr; 426baacf047SPaolo Bonzini const char *port; 427baacf047SPaolo Bonzini int sock = -1, rc; 428baacf047SPaolo Bonzini 429baacf047SPaolo Bonzini /* lookup peer addr */ 430baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 431baacf047SPaolo Bonzini ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; 432baacf047SPaolo Bonzini ai.ai_family = PF_UNSPEC; 433baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 434baacf047SPaolo Bonzini 435baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "host"); 436baacf047SPaolo Bonzini port = qemu_opt_get(opts, "port"); 437baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 438baacf047SPaolo Bonzini addr = "localhost"; 439baacf047SPaolo Bonzini } 440baacf047SPaolo Bonzini if (port == NULL || strlen(port) == 0) { 441baacf047SPaolo Bonzini error_setg(errp, "remote port not specified"); 442baacf047SPaolo Bonzini return -1; 443baacf047SPaolo Bonzini } 444baacf047SPaolo Bonzini 445baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv4", 0)) 446baacf047SPaolo Bonzini ai.ai_family = PF_INET; 447baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) 448baacf047SPaolo Bonzini ai.ai_family = PF_INET6; 449baacf047SPaolo Bonzini 450baacf047SPaolo Bonzini if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) { 451baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 452baacf047SPaolo Bonzini gai_strerror(rc)); 453baacf047SPaolo Bonzini return -1; 454baacf047SPaolo Bonzini } 455baacf047SPaolo Bonzini 456baacf047SPaolo Bonzini /* lookup local addr */ 457baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 458baacf047SPaolo Bonzini ai.ai_flags = AI_PASSIVE; 459baacf047SPaolo Bonzini ai.ai_family = peer->ai_family; 460baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 461baacf047SPaolo Bonzini 462baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "localaddr"); 463baacf047SPaolo Bonzini port = qemu_opt_get(opts, "localport"); 464baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 465baacf047SPaolo Bonzini addr = NULL; 466baacf047SPaolo Bonzini } 467baacf047SPaolo Bonzini if (!port || strlen(port) == 0) 468baacf047SPaolo Bonzini port = "0"; 469baacf047SPaolo Bonzini 470baacf047SPaolo Bonzini if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) { 471baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 472baacf047SPaolo Bonzini gai_strerror(rc)); 473baacf047SPaolo Bonzini goto err; 474baacf047SPaolo Bonzini } 475baacf047SPaolo Bonzini 476baacf047SPaolo Bonzini /* create socket */ 477baacf047SPaolo Bonzini sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); 478baacf047SPaolo Bonzini if (sock < 0) { 479235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 480baacf047SPaolo Bonzini goto err; 481baacf047SPaolo Bonzini } 48204fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 483baacf047SPaolo Bonzini 484baacf047SPaolo Bonzini /* bind socket */ 485baacf047SPaolo Bonzini if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { 486235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to bind socket"); 487baacf047SPaolo Bonzini goto err; 488baacf047SPaolo Bonzini } 489baacf047SPaolo Bonzini 490baacf047SPaolo Bonzini /* connect to peer */ 491baacf047SPaolo Bonzini if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { 492235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to connect socket"); 493baacf047SPaolo Bonzini goto err; 494baacf047SPaolo Bonzini } 495baacf047SPaolo Bonzini 496baacf047SPaolo Bonzini freeaddrinfo(local); 497baacf047SPaolo Bonzini freeaddrinfo(peer); 498baacf047SPaolo Bonzini return sock; 499baacf047SPaolo Bonzini 500baacf047SPaolo Bonzini err: 501baacf047SPaolo Bonzini if (-1 != sock) 502baacf047SPaolo Bonzini closesocket(sock); 503baacf047SPaolo Bonzini if (local) 504baacf047SPaolo Bonzini freeaddrinfo(local); 505baacf047SPaolo Bonzini if (peer) 506baacf047SPaolo Bonzini freeaddrinfo(peer); 507baacf047SPaolo Bonzini return -1; 508baacf047SPaolo Bonzini } 509baacf047SPaolo Bonzini 510baacf047SPaolo Bonzini /* compatibility wrapper */ 511f17c90beSKevin Wolf InetSocketAddress *inet_parse(const char *str, Error **errp) 512baacf047SPaolo Bonzini { 513baacf047SPaolo Bonzini InetSocketAddress *addr; 514baacf047SPaolo Bonzini const char *optstr, *h; 515*55a10996SKevin Wolf char host[65]; 516baacf047SPaolo Bonzini char port[33]; 517baacf047SPaolo Bonzini int to; 518baacf047SPaolo Bonzini int pos; 519baacf047SPaolo Bonzini 520baacf047SPaolo Bonzini addr = g_new0(InetSocketAddress, 1); 521baacf047SPaolo Bonzini 522baacf047SPaolo Bonzini /* parse address */ 523baacf047SPaolo Bonzini if (str[0] == ':') { 524baacf047SPaolo Bonzini /* no host given */ 525baacf047SPaolo Bonzini host[0] = '\0'; 526baacf047SPaolo Bonzini if (1 != sscanf(str, ":%32[^,]%n", port, &pos)) { 527baacf047SPaolo Bonzini error_setg(errp, "error parsing port in address '%s'", str); 528baacf047SPaolo Bonzini goto fail; 529baacf047SPaolo Bonzini } 530baacf047SPaolo Bonzini } else if (str[0] == '[') { 531baacf047SPaolo Bonzini /* IPv6 addr */ 532baacf047SPaolo Bonzini if (2 != sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos)) { 533baacf047SPaolo Bonzini error_setg(errp, "error parsing IPv6 address '%s'", str); 534baacf047SPaolo Bonzini goto fail; 535baacf047SPaolo Bonzini } 536baacf047SPaolo Bonzini addr->ipv6 = addr->has_ipv6 = true; 537baacf047SPaolo Bonzini } else { 538391b7b97SJán Tomko /* hostname or IPv4 addr */ 539baacf047SPaolo Bonzini if (2 != sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos)) { 540baacf047SPaolo Bonzini error_setg(errp, "error parsing address '%s'", str); 541baacf047SPaolo Bonzini goto fail; 542baacf047SPaolo Bonzini } 543391b7b97SJán Tomko if (host[strspn(host, "0123456789.")] == '\0') { 544391b7b97SJán Tomko addr->ipv4 = addr->has_ipv4 = true; 545391b7b97SJán Tomko } 546baacf047SPaolo Bonzini } 547baacf047SPaolo Bonzini 548baacf047SPaolo Bonzini addr->host = g_strdup(host); 549baacf047SPaolo Bonzini addr->port = g_strdup(port); 550baacf047SPaolo Bonzini 551baacf047SPaolo Bonzini /* parse options */ 552baacf047SPaolo Bonzini optstr = str + pos; 553baacf047SPaolo Bonzini h = strstr(optstr, ",to="); 554baacf047SPaolo Bonzini if (h) { 555baacf047SPaolo Bonzini h += 4; 556baacf047SPaolo Bonzini if (sscanf(h, "%d%n", &to, &pos) != 1 || 557baacf047SPaolo Bonzini (h[pos] != '\0' && h[pos] != ',')) { 558baacf047SPaolo Bonzini error_setg(errp, "error parsing to= argument"); 559baacf047SPaolo Bonzini goto fail; 560baacf047SPaolo Bonzini } 561baacf047SPaolo Bonzini addr->has_to = true; 562baacf047SPaolo Bonzini addr->to = to; 563baacf047SPaolo Bonzini } 564baacf047SPaolo Bonzini if (strstr(optstr, ",ipv4")) { 565baacf047SPaolo Bonzini addr->ipv4 = addr->has_ipv4 = true; 566baacf047SPaolo Bonzini } 567baacf047SPaolo Bonzini if (strstr(optstr, ",ipv6")) { 568baacf047SPaolo Bonzini addr->ipv6 = addr->has_ipv6 = true; 569baacf047SPaolo Bonzini } 570baacf047SPaolo Bonzini return addr; 571baacf047SPaolo Bonzini 572baacf047SPaolo Bonzini fail: 573baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 574baacf047SPaolo Bonzini return NULL; 575baacf047SPaolo Bonzini } 576baacf047SPaolo Bonzini 577f17c90beSKevin Wolf static void inet_addr_to_opts(QemuOpts *opts, const InetSocketAddress *addr) 578baacf047SPaolo Bonzini { 579baacf047SPaolo Bonzini bool ipv4 = addr->ipv4 || !addr->has_ipv4; 580baacf047SPaolo Bonzini bool ipv6 = addr->ipv6 || !addr->has_ipv6; 581baacf047SPaolo Bonzini 582baacf047SPaolo Bonzini if (!ipv4 || !ipv6) { 583baacf047SPaolo Bonzini qemu_opt_set_bool(opts, "ipv4", ipv4); 584baacf047SPaolo Bonzini qemu_opt_set_bool(opts, "ipv6", ipv6); 585baacf047SPaolo Bonzini } 586baacf047SPaolo Bonzini if (addr->has_to) { 587baacf047SPaolo Bonzini char to[20]; 588baacf047SPaolo Bonzini snprintf(to, sizeof(to), "%d", addr->to); 589baacf047SPaolo Bonzini qemu_opt_set(opts, "to", to); 590baacf047SPaolo Bonzini } 591baacf047SPaolo Bonzini qemu_opt_set(opts, "host", addr->host); 592baacf047SPaolo Bonzini qemu_opt_set(opts, "port", addr->port); 593baacf047SPaolo Bonzini } 594baacf047SPaolo Bonzini 595baacf047SPaolo Bonzini int inet_listen(const char *str, char *ostr, int olen, 596baacf047SPaolo Bonzini int socktype, int port_offset, Error **errp) 597baacf047SPaolo Bonzini { 598baacf047SPaolo Bonzini QemuOpts *opts; 599baacf047SPaolo Bonzini char *optstr; 600baacf047SPaolo Bonzini int sock = -1; 601baacf047SPaolo Bonzini InetSocketAddress *addr; 602baacf047SPaolo Bonzini 603baacf047SPaolo Bonzini addr = inet_parse(str, errp); 604baacf047SPaolo Bonzini if (addr != NULL) { 60587ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 606baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr); 607baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 608baacf047SPaolo Bonzini sock = inet_listen_opts(opts, port_offset, errp); 609baacf047SPaolo Bonzini if (sock != -1 && ostr) { 610baacf047SPaolo Bonzini optstr = strchr(str, ','); 611baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) { 612baacf047SPaolo Bonzini snprintf(ostr, olen, "[%s]:%s%s", 613baacf047SPaolo Bonzini qemu_opt_get(opts, "host"), 614baacf047SPaolo Bonzini qemu_opt_get(opts, "port"), 615baacf047SPaolo Bonzini optstr ? optstr : ""); 616baacf047SPaolo Bonzini } else { 617baacf047SPaolo Bonzini snprintf(ostr, olen, "%s:%s%s", 618baacf047SPaolo Bonzini qemu_opt_get(opts, "host"), 619baacf047SPaolo Bonzini qemu_opt_get(opts, "port"), 620baacf047SPaolo Bonzini optstr ? optstr : ""); 621baacf047SPaolo Bonzini } 622baacf047SPaolo Bonzini } 623baacf047SPaolo Bonzini qemu_opts_del(opts); 624baacf047SPaolo Bonzini } 625baacf047SPaolo Bonzini return sock; 626baacf047SPaolo Bonzini } 627baacf047SPaolo Bonzini 628baacf047SPaolo Bonzini /** 629baacf047SPaolo Bonzini * Create a blocking socket and connect it to an address. 630baacf047SPaolo Bonzini * 631baacf047SPaolo Bonzini * @str: address string 632baacf047SPaolo Bonzini * @errp: set in case of an error 633baacf047SPaolo Bonzini * 634baacf047SPaolo Bonzini * Returns -1 in case of error, file descriptor on success 635baacf047SPaolo Bonzini **/ 636baacf047SPaolo Bonzini int inet_connect(const char *str, Error **errp) 637baacf047SPaolo Bonzini { 638baacf047SPaolo Bonzini QemuOpts *opts; 639baacf047SPaolo Bonzini int sock = -1; 640baacf047SPaolo Bonzini InetSocketAddress *addr; 641baacf047SPaolo Bonzini 642baacf047SPaolo Bonzini addr = inet_parse(str, errp); 643baacf047SPaolo Bonzini if (addr != NULL) { 64487ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 645baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr); 646baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 647baacf047SPaolo Bonzini sock = inet_connect_opts(opts, errp, NULL, NULL); 648baacf047SPaolo Bonzini qemu_opts_del(opts); 649baacf047SPaolo Bonzini } 650baacf047SPaolo Bonzini return sock; 651baacf047SPaolo Bonzini } 652baacf047SPaolo Bonzini 653baacf047SPaolo Bonzini /** 654baacf047SPaolo Bonzini * Create a non-blocking socket and connect it to an address. 655baacf047SPaolo Bonzini * Calls the callback function with fd in case of success or -1 in case of 656baacf047SPaolo Bonzini * error. 657baacf047SPaolo Bonzini * 658baacf047SPaolo Bonzini * @str: address string 659baacf047SPaolo Bonzini * @callback: callback function that is called when connect completes, 660baacf047SPaolo Bonzini * cannot be NULL. 661baacf047SPaolo Bonzini * @opaque: opaque for callback function 662baacf047SPaolo Bonzini * @errp: set in case of an error 663baacf047SPaolo Bonzini * 664baacf047SPaolo Bonzini * Returns: -1 on immediate error, file descriptor on success. 665baacf047SPaolo Bonzini **/ 666baacf047SPaolo Bonzini int inet_nonblocking_connect(const char *str, 667baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, 668baacf047SPaolo Bonzini void *opaque, Error **errp) 669baacf047SPaolo Bonzini { 670baacf047SPaolo Bonzini QemuOpts *opts; 671baacf047SPaolo Bonzini int sock = -1; 672baacf047SPaolo Bonzini InetSocketAddress *addr; 673baacf047SPaolo Bonzini 674baacf047SPaolo Bonzini g_assert(callback != NULL); 675baacf047SPaolo Bonzini 676baacf047SPaolo Bonzini addr = inet_parse(str, errp); 677baacf047SPaolo Bonzini if (addr != NULL) { 67887ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 679baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr); 680baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 681baacf047SPaolo Bonzini sock = inet_connect_opts(opts, errp, callback, opaque); 682baacf047SPaolo Bonzini qemu_opts_del(opts); 683baacf047SPaolo Bonzini } 684baacf047SPaolo Bonzini return sock; 685baacf047SPaolo Bonzini } 686baacf047SPaolo Bonzini 687baacf047SPaolo Bonzini #ifndef _WIN32 688baacf047SPaolo Bonzini 689baacf047SPaolo Bonzini int unix_listen_opts(QemuOpts *opts, Error **errp) 690baacf047SPaolo Bonzini { 691baacf047SPaolo Bonzini struct sockaddr_un un; 692baacf047SPaolo Bonzini const char *path = qemu_opt_get(opts, "path"); 693baacf047SPaolo Bonzini int sock, fd; 694baacf047SPaolo Bonzini 695baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 696baacf047SPaolo Bonzini if (sock < 0) { 697b658c53dSPaolo Bonzini error_setg_errno(errp, errno, "Failed to create Unix socket"); 698baacf047SPaolo Bonzini return -1; 699baacf047SPaolo Bonzini } 700baacf047SPaolo Bonzini 701baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 702baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 703baacf047SPaolo Bonzini if (path && strlen(path)) { 704baacf047SPaolo Bonzini snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); 705baacf047SPaolo Bonzini } else { 706b658c53dSPaolo Bonzini const char *tmpdir = getenv("TMPDIR"); 707b658c53dSPaolo Bonzini tmpdir = tmpdir ? tmpdir : "/tmp"; 708b658c53dSPaolo Bonzini if (snprintf(un.sun_path, sizeof(un.sun_path), "%s/qemu-socket-XXXXXX", 709b658c53dSPaolo Bonzini tmpdir) >= sizeof(un.sun_path)) { 710b658c53dSPaolo Bonzini error_setg_errno(errp, errno, 711b658c53dSPaolo Bonzini "TMPDIR environment variable (%s) too large", tmpdir); 712b658c53dSPaolo Bonzini goto err; 713b658c53dSPaolo Bonzini } 714b658c53dSPaolo Bonzini 715baacf047SPaolo Bonzini /* 716baacf047SPaolo Bonzini * This dummy fd usage silences the mktemp() unsecure warning. 717baacf047SPaolo Bonzini * Using mkstemp() doesn't make things more secure here 718baacf047SPaolo Bonzini * though. bind() complains about existing files, so we have 719baacf047SPaolo Bonzini * to unlink first and thus re-open the race window. The 720baacf047SPaolo Bonzini * worst case possible is bind() failing, i.e. a DoS attack. 721baacf047SPaolo Bonzini */ 722b658c53dSPaolo Bonzini fd = mkstemp(un.sun_path); 723b658c53dSPaolo Bonzini if (fd < 0) { 724b658c53dSPaolo Bonzini error_setg_errno(errp, errno, 725b658c53dSPaolo Bonzini "Failed to make a temporary socket name in %s", tmpdir); 726b658c53dSPaolo Bonzini goto err; 727b658c53dSPaolo Bonzini } 728b658c53dSPaolo Bonzini close(fd); 729baacf047SPaolo Bonzini qemu_opt_set(opts, "path", un.sun_path); 730baacf047SPaolo Bonzini } 731baacf047SPaolo Bonzini 732baacf047SPaolo Bonzini unlink(un.sun_path); 733baacf047SPaolo Bonzini if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { 734b658c53dSPaolo Bonzini error_setg_errno(errp, errno, "Failed to bind socket to %s", un.sun_path); 735baacf047SPaolo Bonzini goto err; 736baacf047SPaolo Bonzini } 737baacf047SPaolo Bonzini if (listen(sock, 1) < 0) { 738235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to listen on socket"); 739baacf047SPaolo Bonzini goto err; 740baacf047SPaolo Bonzini } 741baacf047SPaolo Bonzini 742baacf047SPaolo Bonzini return sock; 743baacf047SPaolo Bonzini 744baacf047SPaolo Bonzini err: 745baacf047SPaolo Bonzini closesocket(sock); 746baacf047SPaolo Bonzini return -1; 747baacf047SPaolo Bonzini } 748baacf047SPaolo Bonzini 749baacf047SPaolo Bonzini int unix_connect_opts(QemuOpts *opts, Error **errp, 750baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 751baacf047SPaolo Bonzini { 752baacf047SPaolo Bonzini struct sockaddr_un un; 753baacf047SPaolo Bonzini const char *path = qemu_opt_get(opts, "path"); 754baacf047SPaolo Bonzini ConnectState *connect_state = NULL; 755baacf047SPaolo Bonzini int sock, rc; 756baacf047SPaolo Bonzini 7578108fd3eSGonglei if (path == NULL) { 758312fd5f2SMarkus Armbruster error_setg(errp, "unix connect: no path specified"); 759baacf047SPaolo Bonzini return -1; 760baacf047SPaolo Bonzini } 761baacf047SPaolo Bonzini 762baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 763baacf047SPaolo Bonzini if (sock < 0) { 764235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 765baacf047SPaolo Bonzini return -1; 766baacf047SPaolo Bonzini } 767baacf047SPaolo Bonzini if (callback != NULL) { 768baacf047SPaolo Bonzini connect_state = g_malloc0(sizeof(*connect_state)); 769baacf047SPaolo Bonzini connect_state->callback = callback; 770baacf047SPaolo Bonzini connect_state->opaque = opaque; 771f9e8caccSStefan Hajnoczi qemu_set_nonblock(sock); 772baacf047SPaolo Bonzini } 773baacf047SPaolo Bonzini 774baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 775baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 776baacf047SPaolo Bonzini snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); 777baacf047SPaolo Bonzini 778baacf047SPaolo Bonzini /* connect to peer */ 779baacf047SPaolo Bonzini do { 780baacf047SPaolo Bonzini rc = 0; 781baacf047SPaolo Bonzini if (connect(sock, (struct sockaddr *) &un, sizeof(un)) < 0) { 782baacf047SPaolo Bonzini rc = -socket_error(); 783baacf047SPaolo Bonzini } 784baacf047SPaolo Bonzini } while (rc == -EINTR); 785baacf047SPaolo Bonzini 786baacf047SPaolo Bonzini if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { 787baacf047SPaolo Bonzini connect_state->fd = sock; 788baacf047SPaolo Bonzini qemu_set_fd_handler2(sock, NULL, NULL, wait_for_connect, 789baacf047SPaolo Bonzini connect_state); 790baacf047SPaolo Bonzini return sock; 791baacf047SPaolo Bonzini } else if (rc >= 0) { 792baacf047SPaolo Bonzini /* non blocking socket immediate success, call callback */ 793baacf047SPaolo Bonzini if (callback != NULL) { 79451795029SCorey Minyard callback(sock, NULL, opaque); 795baacf047SPaolo Bonzini } 796baacf047SPaolo Bonzini } 797baacf047SPaolo Bonzini 798baacf047SPaolo Bonzini if (rc < 0) { 799235256a2SMarkus Armbruster error_setg_errno(errp, -rc, "Failed to connect socket"); 800baacf047SPaolo Bonzini close(sock); 801baacf047SPaolo Bonzini sock = -1; 802baacf047SPaolo Bonzini } 803baacf047SPaolo Bonzini 804baacf047SPaolo Bonzini g_free(connect_state); 805baacf047SPaolo Bonzini return sock; 806baacf047SPaolo Bonzini } 807baacf047SPaolo Bonzini 808baacf047SPaolo Bonzini #else 809baacf047SPaolo Bonzini 810baacf047SPaolo Bonzini int unix_listen_opts(QemuOpts *opts, Error **errp) 811baacf047SPaolo Bonzini { 812baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 813baacf047SPaolo Bonzini errno = ENOTSUP; 814baacf047SPaolo Bonzini return -1; 815baacf047SPaolo Bonzini } 816baacf047SPaolo Bonzini 817baacf047SPaolo Bonzini int unix_connect_opts(QemuOpts *opts, Error **errp, 818baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 819baacf047SPaolo Bonzini { 820baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 821baacf047SPaolo Bonzini errno = ENOTSUP; 822baacf047SPaolo Bonzini return -1; 823baacf047SPaolo Bonzini } 824baacf047SPaolo Bonzini #endif 825baacf047SPaolo Bonzini 826baacf047SPaolo Bonzini /* compatibility wrapper */ 827baacf047SPaolo Bonzini int unix_listen(const char *str, char *ostr, int olen, Error **errp) 828baacf047SPaolo Bonzini { 829baacf047SPaolo Bonzini QemuOpts *opts; 830baacf047SPaolo Bonzini char *path, *optstr; 831baacf047SPaolo Bonzini int sock, len; 832baacf047SPaolo Bonzini 83387ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 834baacf047SPaolo Bonzini 835baacf047SPaolo Bonzini optstr = strchr(str, ','); 836baacf047SPaolo Bonzini if (optstr) { 837baacf047SPaolo Bonzini len = optstr - str; 838baacf047SPaolo Bonzini if (len) { 839baacf047SPaolo Bonzini path = g_malloc(len+1); 840baacf047SPaolo Bonzini snprintf(path, len+1, "%.*s", len, str); 841baacf047SPaolo Bonzini qemu_opt_set(opts, "path", path); 842baacf047SPaolo Bonzini g_free(path); 843baacf047SPaolo Bonzini } 844baacf047SPaolo Bonzini } else { 845baacf047SPaolo Bonzini qemu_opt_set(opts, "path", str); 846baacf047SPaolo Bonzini } 847baacf047SPaolo Bonzini 848baacf047SPaolo Bonzini sock = unix_listen_opts(opts, errp); 849baacf047SPaolo Bonzini 850baacf047SPaolo Bonzini if (sock != -1 && ostr) 851baacf047SPaolo Bonzini snprintf(ostr, olen, "%s%s", qemu_opt_get(opts, "path"), optstr ? optstr : ""); 852baacf047SPaolo Bonzini qemu_opts_del(opts); 853baacf047SPaolo Bonzini return sock; 854baacf047SPaolo Bonzini } 855baacf047SPaolo Bonzini 856baacf047SPaolo Bonzini int unix_connect(const char *path, Error **errp) 857baacf047SPaolo Bonzini { 858baacf047SPaolo Bonzini QemuOpts *opts; 859baacf047SPaolo Bonzini int sock; 860baacf047SPaolo Bonzini 86187ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 862baacf047SPaolo Bonzini qemu_opt_set(opts, "path", path); 863baacf047SPaolo Bonzini sock = unix_connect_opts(opts, errp, NULL, NULL); 864baacf047SPaolo Bonzini qemu_opts_del(opts); 865baacf047SPaolo Bonzini return sock; 866baacf047SPaolo Bonzini } 867baacf047SPaolo Bonzini 868baacf047SPaolo Bonzini 869baacf047SPaolo Bonzini int unix_nonblocking_connect(const char *path, 870baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, 871baacf047SPaolo Bonzini void *opaque, Error **errp) 872baacf047SPaolo Bonzini { 873baacf047SPaolo Bonzini QemuOpts *opts; 874baacf047SPaolo Bonzini int sock = -1; 875baacf047SPaolo Bonzini 876baacf047SPaolo Bonzini g_assert(callback != NULL); 877baacf047SPaolo Bonzini 87887ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 879baacf047SPaolo Bonzini qemu_opt_set(opts, "path", path); 880baacf047SPaolo Bonzini sock = unix_connect_opts(opts, errp, callback, opaque); 881baacf047SPaolo Bonzini qemu_opts_del(opts); 882baacf047SPaolo Bonzini return sock; 883baacf047SPaolo Bonzini } 884baacf047SPaolo Bonzini 885baacf047SPaolo Bonzini SocketAddress *socket_parse(const char *str, Error **errp) 886baacf047SPaolo Bonzini { 887afde3f8bSGerd Hoffmann SocketAddress *addr; 888baacf047SPaolo Bonzini 889afde3f8bSGerd Hoffmann addr = g_new0(SocketAddress, 1); 890baacf047SPaolo Bonzini if (strstart(str, "unix:", NULL)) { 891baacf047SPaolo Bonzini if (str[5] == '\0') { 892312fd5f2SMarkus Armbruster error_setg(errp, "invalid Unix socket address"); 893baacf047SPaolo Bonzini goto fail; 894baacf047SPaolo Bonzini } else { 895baacf047SPaolo Bonzini addr->kind = SOCKET_ADDRESS_KIND_UNIX; 896baacf047SPaolo Bonzini addr->q_unix = g_new(UnixSocketAddress, 1); 897baacf047SPaolo Bonzini addr->q_unix->path = g_strdup(str + 5); 898baacf047SPaolo Bonzini } 899baacf047SPaolo Bonzini } else if (strstart(str, "fd:", NULL)) { 900baacf047SPaolo Bonzini if (str[3] == '\0') { 901312fd5f2SMarkus Armbruster error_setg(errp, "invalid file descriptor address"); 902baacf047SPaolo Bonzini goto fail; 903baacf047SPaolo Bonzini } else { 904baacf047SPaolo Bonzini addr->kind = SOCKET_ADDRESS_KIND_FD; 905baacf047SPaolo Bonzini addr->fd = g_new(String, 1); 906baacf047SPaolo Bonzini addr->fd->str = g_strdup(str + 3); 907baacf047SPaolo Bonzini } 908baacf047SPaolo Bonzini } else { 909baacf047SPaolo Bonzini addr->kind = SOCKET_ADDRESS_KIND_INET; 910baacf047SPaolo Bonzini addr->inet = inet_parse(str, errp); 911baacf047SPaolo Bonzini if (addr->inet == NULL) { 912baacf047SPaolo Bonzini goto fail; 913baacf047SPaolo Bonzini } 914baacf047SPaolo Bonzini } 915baacf047SPaolo Bonzini return addr; 916baacf047SPaolo Bonzini 917baacf047SPaolo Bonzini fail: 918baacf047SPaolo Bonzini qapi_free_SocketAddress(addr); 919baacf047SPaolo Bonzini return NULL; 920baacf047SPaolo Bonzini } 921baacf047SPaolo Bonzini 922baacf047SPaolo Bonzini int socket_connect(SocketAddress *addr, Error **errp, 923baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 924baacf047SPaolo Bonzini { 925baacf047SPaolo Bonzini QemuOpts *opts; 926baacf047SPaolo Bonzini int fd; 927baacf047SPaolo Bonzini 92887ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 929baacf047SPaolo Bonzini switch (addr->kind) { 930baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_INET: 931baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr->inet); 932baacf047SPaolo Bonzini fd = inet_connect_opts(opts, errp, callback, opaque); 933baacf047SPaolo Bonzini break; 934baacf047SPaolo Bonzini 935baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_UNIX: 936baacf047SPaolo Bonzini qemu_opt_set(opts, "path", addr->q_unix->path); 937baacf047SPaolo Bonzini fd = unix_connect_opts(opts, errp, callback, opaque); 938baacf047SPaolo Bonzini break; 939baacf047SPaolo Bonzini 940baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_FD: 941baacf047SPaolo Bonzini fd = monitor_get_fd(cur_mon, addr->fd->str, errp); 942d1ec72a4SGerd Hoffmann if (fd >= 0 && callback) { 9431a751ebfSStefan Hajnoczi qemu_set_nonblock(fd); 94451795029SCorey Minyard callback(fd, NULL, opaque); 945baacf047SPaolo Bonzini } 946baacf047SPaolo Bonzini break; 947baacf047SPaolo Bonzini 948baacf047SPaolo Bonzini default: 949baacf047SPaolo Bonzini abort(); 950baacf047SPaolo Bonzini } 951baacf047SPaolo Bonzini qemu_opts_del(opts); 952baacf047SPaolo Bonzini return fd; 953baacf047SPaolo Bonzini } 954baacf047SPaolo Bonzini 955baacf047SPaolo Bonzini int socket_listen(SocketAddress *addr, Error **errp) 956baacf047SPaolo Bonzini { 957baacf047SPaolo Bonzini QemuOpts *opts; 958baacf047SPaolo Bonzini int fd; 959baacf047SPaolo Bonzini 96087ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 961baacf047SPaolo Bonzini switch (addr->kind) { 962baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_INET: 963baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr->inet); 964baacf047SPaolo Bonzini fd = inet_listen_opts(opts, 0, errp); 965baacf047SPaolo Bonzini break; 966baacf047SPaolo Bonzini 967baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_UNIX: 968baacf047SPaolo Bonzini qemu_opt_set(opts, "path", addr->q_unix->path); 969baacf047SPaolo Bonzini fd = unix_listen_opts(opts, errp); 970baacf047SPaolo Bonzini break; 971baacf047SPaolo Bonzini 972baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_FD: 973baacf047SPaolo Bonzini fd = monitor_get_fd(cur_mon, addr->fd->str, errp); 974baacf047SPaolo Bonzini break; 975baacf047SPaolo Bonzini 976baacf047SPaolo Bonzini default: 977baacf047SPaolo Bonzini abort(); 978baacf047SPaolo Bonzini } 979baacf047SPaolo Bonzini qemu_opts_del(opts); 980baacf047SPaolo Bonzini return fd; 981baacf047SPaolo Bonzini } 982baacf047SPaolo Bonzini 9833ecc059dSGerd Hoffmann int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) 9843ecc059dSGerd Hoffmann { 9853ecc059dSGerd Hoffmann QemuOpts *opts; 9863ecc059dSGerd Hoffmann int fd; 9873ecc059dSGerd Hoffmann 98887ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 9893ecc059dSGerd Hoffmann switch (remote->kind) { 9903ecc059dSGerd Hoffmann case SOCKET_ADDRESS_KIND_INET: 9918287fea3SPeter Maydell inet_addr_to_opts(opts, remote->inet); 9923ecc059dSGerd Hoffmann if (local) { 9933ecc059dSGerd Hoffmann qemu_opt_set(opts, "localaddr", local->inet->host); 9943ecc059dSGerd Hoffmann qemu_opt_set(opts, "localport", local->inet->port); 9953ecc059dSGerd Hoffmann } 9963ecc059dSGerd Hoffmann fd = inet_dgram_opts(opts, errp); 9973ecc059dSGerd Hoffmann break; 9983ecc059dSGerd Hoffmann 9993ecc059dSGerd Hoffmann default: 10003ecc059dSGerd Hoffmann error_setg(errp, "socket type unsupported for datagram"); 10017a5b6af1SGerd Hoffmann fd = -1; 10023ecc059dSGerd Hoffmann } 10033ecc059dSGerd Hoffmann qemu_opts_del(opts); 10043ecc059dSGerd Hoffmann return fd; 10053ecc059dSGerd Hoffmann } 1006