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 },{ 48b8981dc9SPeter Krempa .name = "localaddr", 49b8981dc9SPeter Krempa .type = QEMU_OPT_STRING, 50b8981dc9SPeter Krempa },{ 51b8981dc9SPeter Krempa .name = "localport", 52b8981dc9SPeter Krempa .type = QEMU_OPT_STRING, 53b8981dc9SPeter Krempa },{ 54baacf047SPaolo Bonzini .name = "to", 55baacf047SPaolo Bonzini .type = QEMU_OPT_NUMBER, 56baacf047SPaolo Bonzini },{ 57baacf047SPaolo Bonzini .name = "ipv4", 58baacf047SPaolo Bonzini .type = QEMU_OPT_BOOL, 59baacf047SPaolo Bonzini },{ 60baacf047SPaolo Bonzini .name = "ipv6", 61baacf047SPaolo Bonzini .type = QEMU_OPT_BOOL, 62baacf047SPaolo Bonzini }, 63baacf047SPaolo Bonzini { /* end if list */ } 64baacf047SPaolo Bonzini }, 65baacf047SPaolo Bonzini }; 66baacf047SPaolo Bonzini 67baacf047SPaolo Bonzini static int inet_getport(struct addrinfo *e) 68baacf047SPaolo Bonzini { 69baacf047SPaolo Bonzini struct sockaddr_in *i4; 70baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 71baacf047SPaolo Bonzini 72baacf047SPaolo Bonzini switch (e->ai_family) { 73baacf047SPaolo Bonzini case PF_INET6: 74baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 75baacf047SPaolo Bonzini return ntohs(i6->sin6_port); 76baacf047SPaolo Bonzini case PF_INET: 77baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 78baacf047SPaolo Bonzini return ntohs(i4->sin_port); 79baacf047SPaolo Bonzini default: 80baacf047SPaolo Bonzini return 0; 81baacf047SPaolo Bonzini } 82baacf047SPaolo Bonzini } 83baacf047SPaolo Bonzini 84baacf047SPaolo Bonzini static void inet_setport(struct addrinfo *e, int port) 85baacf047SPaolo Bonzini { 86baacf047SPaolo Bonzini struct sockaddr_in *i4; 87baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 88baacf047SPaolo Bonzini 89baacf047SPaolo Bonzini switch (e->ai_family) { 90baacf047SPaolo Bonzini case PF_INET6: 91baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 92baacf047SPaolo Bonzini i6->sin6_port = htons(port); 93baacf047SPaolo Bonzini break; 94baacf047SPaolo Bonzini case PF_INET: 95baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 96baacf047SPaolo Bonzini i4->sin_port = htons(port); 97baacf047SPaolo Bonzini break; 98baacf047SPaolo Bonzini } 99baacf047SPaolo Bonzini } 100baacf047SPaolo Bonzini 101a589569fSWenchao Xia NetworkAddressFamily inet_netfamily(int family) 102a589569fSWenchao Xia { 103a589569fSWenchao Xia switch (family) { 104a589569fSWenchao Xia case PF_INET6: return NETWORK_ADDRESS_FAMILY_IPV6; 105a589569fSWenchao Xia case PF_INET: return NETWORK_ADDRESS_FAMILY_IPV4; 106a589569fSWenchao Xia case PF_UNIX: return NETWORK_ADDRESS_FAMILY_UNIX; 107a589569fSWenchao Xia } 108a589569fSWenchao Xia return NETWORK_ADDRESS_FAMILY_UNKNOWN; 109a589569fSWenchao Xia } 110a589569fSWenchao Xia 111baacf047SPaolo Bonzini int inet_listen_opts(QemuOpts *opts, int port_offset, Error **errp) 112baacf047SPaolo Bonzini { 113baacf047SPaolo Bonzini struct addrinfo ai,*res,*e; 114baacf047SPaolo Bonzini const char *addr; 115baacf047SPaolo Bonzini char port[33]; 116baacf047SPaolo Bonzini char uaddr[INET6_ADDRSTRLEN+1]; 117baacf047SPaolo Bonzini char uport[33]; 118baacf047SPaolo Bonzini int slisten, rc, to, port_min, port_max, p; 119baacf047SPaolo Bonzini 120baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 121baacf047SPaolo Bonzini ai.ai_flags = AI_PASSIVE | AI_ADDRCONFIG; 122baacf047SPaolo Bonzini ai.ai_family = PF_UNSPEC; 123baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 124baacf047SPaolo Bonzini 125baacf047SPaolo Bonzini if ((qemu_opt_get(opts, "host") == NULL) || 126baacf047SPaolo Bonzini (qemu_opt_get(opts, "port") == NULL)) { 127baacf047SPaolo Bonzini error_setg(errp, "host and/or port not specified"); 128baacf047SPaolo Bonzini return -1; 129baacf047SPaolo Bonzini } 130baacf047SPaolo Bonzini pstrcpy(port, sizeof(port), qemu_opt_get(opts, "port")); 131baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "host"); 132baacf047SPaolo Bonzini 133baacf047SPaolo Bonzini to = qemu_opt_get_number(opts, "to", 0); 134baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv4", 0)) 135baacf047SPaolo Bonzini ai.ai_family = PF_INET; 136baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) 137baacf047SPaolo Bonzini ai.ai_family = PF_INET6; 138baacf047SPaolo Bonzini 139baacf047SPaolo Bonzini /* lookup */ 1408bc89127SGerd Hoffmann if (port_offset) { 1418bc89127SGerd Hoffmann unsigned long long baseport; 1428bc89127SGerd Hoffmann if (parse_uint_full(port, &baseport, 10) < 0) { 1438bc89127SGerd Hoffmann error_setg(errp, "can't convert to a number: %s", port); 1448bc89127SGerd Hoffmann return -1; 1458bc89127SGerd Hoffmann } 1468bc89127SGerd Hoffmann if (baseport > 65535 || 1478bc89127SGerd Hoffmann baseport + port_offset > 65535) { 1488bc89127SGerd Hoffmann error_setg(errp, "port %s out of range", port); 1498bc89127SGerd Hoffmann return -1; 1508bc89127SGerd Hoffmann } 1518bc89127SGerd Hoffmann snprintf(port, sizeof(port), "%d", (int)baseport + port_offset); 1528bc89127SGerd Hoffmann } 153baacf047SPaolo Bonzini rc = getaddrinfo(strlen(addr) ? addr : NULL, port, &ai, &res); 154baacf047SPaolo Bonzini if (rc != 0) { 155baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 156baacf047SPaolo Bonzini gai_strerror(rc)); 157baacf047SPaolo Bonzini return -1; 158baacf047SPaolo Bonzini } 159baacf047SPaolo Bonzini 160baacf047SPaolo Bonzini /* create socket + bind */ 161baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 162baacf047SPaolo Bonzini getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, 163baacf047SPaolo Bonzini uaddr,INET6_ADDRSTRLEN,uport,32, 164baacf047SPaolo Bonzini NI_NUMERICHOST | NI_NUMERICSERV); 165baacf047SPaolo Bonzini slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); 166baacf047SPaolo Bonzini if (slisten < 0) { 167baacf047SPaolo Bonzini if (!e->ai_next) { 168235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 169baacf047SPaolo Bonzini } 170baacf047SPaolo Bonzini continue; 171baacf047SPaolo Bonzini } 172baacf047SPaolo Bonzini 17304fd1c78SSebastian Ottlik socket_set_fast_reuse(slisten); 174baacf047SPaolo Bonzini #ifdef IPV6_V6ONLY 175baacf047SPaolo Bonzini if (e->ai_family == PF_INET6) { 176baacf047SPaolo Bonzini /* listen on both ipv4 and ipv6 */ 177f9b5426fSPeter Maydell const int off = 0; 1789957fc7fSStefan Weil qemu_setsockopt(slisten, IPPROTO_IPV6, IPV6_V6ONLY, &off, 179baacf047SPaolo Bonzini sizeof(off)); 180baacf047SPaolo Bonzini } 181baacf047SPaolo Bonzini #endif 182baacf047SPaolo Bonzini 183baacf047SPaolo Bonzini port_min = inet_getport(e); 184baacf047SPaolo Bonzini port_max = to ? to + port_offset : port_min; 185baacf047SPaolo Bonzini for (p = port_min; p <= port_max; p++) { 186baacf047SPaolo Bonzini inet_setport(e, p); 187baacf047SPaolo Bonzini if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) { 188baacf047SPaolo Bonzini goto listen; 189baacf047SPaolo Bonzini } 190baacf047SPaolo Bonzini if (p == port_max) { 191baacf047SPaolo Bonzini if (!e->ai_next) { 192235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to bind socket"); 193baacf047SPaolo Bonzini } 194baacf047SPaolo Bonzini } 195baacf047SPaolo Bonzini } 196baacf047SPaolo Bonzini closesocket(slisten); 197baacf047SPaolo Bonzini } 198baacf047SPaolo Bonzini freeaddrinfo(res); 199baacf047SPaolo Bonzini return -1; 200baacf047SPaolo Bonzini 201baacf047SPaolo Bonzini listen: 202baacf047SPaolo Bonzini if (listen(slisten,1) != 0) { 203235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to listen on socket"); 204baacf047SPaolo Bonzini closesocket(slisten); 205baacf047SPaolo Bonzini freeaddrinfo(res); 206baacf047SPaolo Bonzini return -1; 207baacf047SPaolo Bonzini } 208f43e47dbSMarkus Armbruster qemu_opt_set(opts, "host", uaddr, &error_abort); 20962b3de69SMarkus Armbruster qemu_opt_set_number(opts, "port", inet_getport(e) - port_offset, 210f43e47dbSMarkus Armbruster &error_abort); 21162b3de69SMarkus Armbruster qemu_opt_set_bool(opts, "ipv6", e->ai_family == PF_INET6, 21262b3de69SMarkus Armbruster &error_abort); 21362b3de69SMarkus Armbruster qemu_opt_set_bool(opts, "ipv4", e->ai_family != PF_INET6, 214f43e47dbSMarkus Armbruster &error_abort); 215baacf047SPaolo Bonzini freeaddrinfo(res); 216baacf047SPaolo Bonzini return slisten; 217baacf047SPaolo Bonzini } 218baacf047SPaolo Bonzini 219baacf047SPaolo Bonzini #ifdef _WIN32 220baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 221baacf047SPaolo Bonzini ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) 222baacf047SPaolo Bonzini #else 223baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 224baacf047SPaolo Bonzini ((rc) == -EINPROGRESS) 225baacf047SPaolo Bonzini #endif 226baacf047SPaolo Bonzini 227baacf047SPaolo Bonzini /* Struct to store connect state for non blocking connect */ 228baacf047SPaolo Bonzini typedef struct ConnectState { 229baacf047SPaolo Bonzini int fd; 230baacf047SPaolo Bonzini struct addrinfo *addr_list; 231baacf047SPaolo Bonzini struct addrinfo *current_addr; 232baacf047SPaolo Bonzini NonBlockingConnectHandler *callback; 233baacf047SPaolo Bonzini void *opaque; 234baacf047SPaolo Bonzini } ConnectState; 235baacf047SPaolo Bonzini 236baacf047SPaolo Bonzini static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, 237baacf047SPaolo Bonzini ConnectState *connect_state, Error **errp); 238baacf047SPaolo Bonzini 239baacf047SPaolo Bonzini static void wait_for_connect(void *opaque) 240baacf047SPaolo Bonzini { 241baacf047SPaolo Bonzini ConnectState *s = opaque; 242baacf047SPaolo Bonzini int val = 0, rc = 0; 243baacf047SPaolo Bonzini socklen_t valsize = sizeof(val); 244baacf047SPaolo Bonzini bool in_progress; 24551795029SCorey Minyard Error *err = NULL; 246baacf047SPaolo Bonzini 247*82e1cc4bSFam Zheng qemu_set_fd_handler(s->fd, NULL, NULL, NULL); 248baacf047SPaolo Bonzini 249baacf047SPaolo Bonzini do { 2509957fc7fSStefan Weil rc = qemu_getsockopt(s->fd, SOL_SOCKET, SO_ERROR, &val, &valsize); 251baacf047SPaolo Bonzini } while (rc == -1 && socket_error() == EINTR); 252baacf047SPaolo Bonzini 253baacf047SPaolo Bonzini /* update rc to contain error */ 254baacf047SPaolo Bonzini if (!rc && val) { 255baacf047SPaolo Bonzini rc = -1; 25651795029SCorey Minyard errno = val; 257baacf047SPaolo Bonzini } 258baacf047SPaolo Bonzini 259baacf047SPaolo Bonzini /* connect error */ 260baacf047SPaolo Bonzini if (rc < 0) { 26151795029SCorey Minyard error_setg_errno(&err, errno, "Error connecting to socket"); 262baacf047SPaolo Bonzini closesocket(s->fd); 263baacf047SPaolo Bonzini s->fd = rc; 264baacf047SPaolo Bonzini } 265baacf047SPaolo Bonzini 266baacf047SPaolo Bonzini /* try to connect to the next address on the list */ 267baacf047SPaolo Bonzini if (s->current_addr) { 268baacf047SPaolo Bonzini while (s->current_addr->ai_next != NULL && s->fd < 0) { 269baacf047SPaolo Bonzini s->current_addr = s->current_addr->ai_next; 270baacf047SPaolo Bonzini s->fd = inet_connect_addr(s->current_addr, &in_progress, s, NULL); 27151795029SCorey Minyard if (s->fd < 0) { 27251795029SCorey Minyard error_free(err); 27351795029SCorey Minyard err = NULL; 27451795029SCorey Minyard error_setg_errno(&err, errno, "Unable to start socket connect"); 27551795029SCorey Minyard } 276baacf047SPaolo Bonzini /* connect in progress */ 277baacf047SPaolo Bonzini if (in_progress) { 27851795029SCorey Minyard goto out; 279baacf047SPaolo Bonzini } 280baacf047SPaolo Bonzini } 281baacf047SPaolo Bonzini 282baacf047SPaolo Bonzini freeaddrinfo(s->addr_list); 283baacf047SPaolo Bonzini } 284baacf047SPaolo Bonzini 285baacf047SPaolo Bonzini if (s->callback) { 28651795029SCorey Minyard s->callback(s->fd, err, s->opaque); 287baacf047SPaolo Bonzini } 288baacf047SPaolo Bonzini g_free(s); 28951795029SCorey Minyard out: 29051795029SCorey Minyard error_free(err); 291baacf047SPaolo Bonzini } 292baacf047SPaolo Bonzini 293baacf047SPaolo Bonzini static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, 294baacf047SPaolo Bonzini ConnectState *connect_state, Error **errp) 295baacf047SPaolo Bonzini { 296baacf047SPaolo Bonzini int sock, rc; 297baacf047SPaolo Bonzini 298baacf047SPaolo Bonzini *in_progress = false; 299baacf047SPaolo Bonzini 300baacf047SPaolo Bonzini sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); 301baacf047SPaolo Bonzini if (sock < 0) { 302235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 303baacf047SPaolo Bonzini return -1; 304baacf047SPaolo Bonzini } 30504fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 306baacf047SPaolo Bonzini if (connect_state != NULL) { 307f9e8caccSStefan Hajnoczi qemu_set_nonblock(sock); 308baacf047SPaolo Bonzini } 309baacf047SPaolo Bonzini /* connect to peer */ 310baacf047SPaolo Bonzini do { 311baacf047SPaolo Bonzini rc = 0; 312baacf047SPaolo Bonzini if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { 313baacf047SPaolo Bonzini rc = -socket_error(); 314baacf047SPaolo Bonzini } 315baacf047SPaolo Bonzini } while (rc == -EINTR); 316baacf047SPaolo Bonzini 317baacf047SPaolo Bonzini if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { 318baacf047SPaolo Bonzini connect_state->fd = sock; 319*82e1cc4bSFam Zheng qemu_set_fd_handler(sock, NULL, wait_for_connect, connect_state); 320baacf047SPaolo Bonzini *in_progress = true; 321baacf047SPaolo Bonzini } else if (rc < 0) { 322235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to connect socket"); 323baacf047SPaolo Bonzini closesocket(sock); 324baacf047SPaolo Bonzini return -1; 325baacf047SPaolo Bonzini } 326baacf047SPaolo Bonzini return sock; 327baacf047SPaolo Bonzini } 328baacf047SPaolo Bonzini 329baacf047SPaolo Bonzini static struct addrinfo *inet_parse_connect_opts(QemuOpts *opts, Error **errp) 330baacf047SPaolo Bonzini { 331baacf047SPaolo Bonzini struct addrinfo ai, *res; 332baacf047SPaolo Bonzini int rc; 333baacf047SPaolo Bonzini const char *addr; 334baacf047SPaolo Bonzini const char *port; 335baacf047SPaolo Bonzini 336baacf047SPaolo Bonzini memset(&ai, 0, sizeof(ai)); 337baacf047SPaolo Bonzini 338baacf047SPaolo Bonzini ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; 339baacf047SPaolo Bonzini ai.ai_family = PF_UNSPEC; 340baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 341baacf047SPaolo Bonzini 342baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "host"); 343baacf047SPaolo Bonzini port = qemu_opt_get(opts, "port"); 344baacf047SPaolo Bonzini if (addr == NULL || port == NULL) { 345baacf047SPaolo Bonzini error_setg(errp, "host and/or port not specified"); 346baacf047SPaolo Bonzini return NULL; 347baacf047SPaolo Bonzini } 348baacf047SPaolo Bonzini 349baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv4", 0)) { 350baacf047SPaolo Bonzini ai.ai_family = PF_INET; 351baacf047SPaolo Bonzini } 352baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) { 353baacf047SPaolo Bonzini ai.ai_family = PF_INET6; 354baacf047SPaolo Bonzini } 355baacf047SPaolo Bonzini 356baacf047SPaolo Bonzini /* lookup */ 357baacf047SPaolo Bonzini rc = getaddrinfo(addr, port, &ai, &res); 358baacf047SPaolo Bonzini if (rc != 0) { 359baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 360baacf047SPaolo Bonzini gai_strerror(rc)); 361baacf047SPaolo Bonzini return NULL; 362baacf047SPaolo Bonzini } 363baacf047SPaolo Bonzini return res; 364baacf047SPaolo Bonzini } 365baacf047SPaolo Bonzini 366baacf047SPaolo Bonzini /** 367baacf047SPaolo Bonzini * Create a socket and connect it to an address. 368baacf047SPaolo Bonzini * 369baacf047SPaolo Bonzini * @opts: QEMU options, recognized parameters strings "host" and "port", 370baacf047SPaolo Bonzini * bools "ipv4" and "ipv6". 371baacf047SPaolo Bonzini * @errp: set on error 372baacf047SPaolo Bonzini * @callback: callback function for non-blocking connect 373baacf047SPaolo Bonzini * @opaque: opaque for callback function 374baacf047SPaolo Bonzini * 375baacf047SPaolo Bonzini * Returns: -1 on error, file descriptor on success. 376baacf047SPaolo Bonzini * 377baacf047SPaolo Bonzini * If @callback is non-null, the connect is non-blocking. If this 378baacf047SPaolo Bonzini * function succeeds, callback will be called when the connection 379baacf047SPaolo Bonzini * completes, with the file descriptor on success, or -1 on error. 380baacf047SPaolo Bonzini */ 381baacf047SPaolo Bonzini int inet_connect_opts(QemuOpts *opts, Error **errp, 382baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 383baacf047SPaolo Bonzini { 3843f9286b7SMarkus Armbruster Error *local_err = NULL; 385baacf047SPaolo Bonzini struct addrinfo *res, *e; 386baacf047SPaolo Bonzini int sock = -1; 387baacf047SPaolo Bonzini bool in_progress; 388baacf047SPaolo Bonzini ConnectState *connect_state = NULL; 389baacf047SPaolo Bonzini 390baacf047SPaolo Bonzini res = inet_parse_connect_opts(opts, errp); 391baacf047SPaolo Bonzini if (!res) { 392baacf047SPaolo Bonzini return -1; 393baacf047SPaolo Bonzini } 394baacf047SPaolo Bonzini 395baacf047SPaolo Bonzini if (callback != NULL) { 396baacf047SPaolo Bonzini connect_state = g_malloc0(sizeof(*connect_state)); 397baacf047SPaolo Bonzini connect_state->addr_list = res; 398baacf047SPaolo Bonzini connect_state->callback = callback; 399baacf047SPaolo Bonzini connect_state->opaque = opaque; 400baacf047SPaolo Bonzini } 401baacf047SPaolo Bonzini 402baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 4033f9286b7SMarkus Armbruster error_free(local_err); 4043f9286b7SMarkus Armbruster local_err = NULL; 405baacf047SPaolo Bonzini if (connect_state != NULL) { 406baacf047SPaolo Bonzini connect_state->current_addr = e; 407baacf047SPaolo Bonzini } 4083f9286b7SMarkus Armbruster sock = inet_connect_addr(e, &in_progress, connect_state, &local_err); 4093f9286b7SMarkus Armbruster if (sock >= 0) { 410baacf047SPaolo Bonzini break; 411baacf047SPaolo Bonzini } 412baacf047SPaolo Bonzini } 4133f9286b7SMarkus Armbruster 4143f9286b7SMarkus Armbruster if (sock < 0) { 4153f9286b7SMarkus Armbruster error_propagate(errp, local_err); 4163f9286b7SMarkus Armbruster } else if (in_progress) { 4173f9286b7SMarkus Armbruster /* wait_for_connect() will do the rest */ 4183f9286b7SMarkus Armbruster return sock; 4193f9286b7SMarkus Armbruster } else { 4203f9286b7SMarkus Armbruster if (callback) { 42151795029SCorey Minyard callback(sock, NULL, opaque); 4223f9286b7SMarkus Armbruster } 4233f9286b7SMarkus Armbruster } 424baacf047SPaolo Bonzini g_free(connect_state); 425baacf047SPaolo Bonzini freeaddrinfo(res); 426baacf047SPaolo Bonzini return sock; 427baacf047SPaolo Bonzini } 428baacf047SPaolo Bonzini 429baacf047SPaolo Bonzini int inet_dgram_opts(QemuOpts *opts, Error **errp) 430baacf047SPaolo Bonzini { 431baacf047SPaolo Bonzini struct addrinfo ai, *peer = NULL, *local = NULL; 432baacf047SPaolo Bonzini const char *addr; 433baacf047SPaolo Bonzini const char *port; 434baacf047SPaolo Bonzini int sock = -1, rc; 435baacf047SPaolo Bonzini 436baacf047SPaolo Bonzini /* lookup peer addr */ 437baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 438baacf047SPaolo Bonzini ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; 439baacf047SPaolo Bonzini ai.ai_family = PF_UNSPEC; 440baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 441baacf047SPaolo Bonzini 442baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "host"); 443baacf047SPaolo Bonzini port = qemu_opt_get(opts, "port"); 444baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 445baacf047SPaolo Bonzini addr = "localhost"; 446baacf047SPaolo Bonzini } 447baacf047SPaolo Bonzini if (port == NULL || strlen(port) == 0) { 448baacf047SPaolo Bonzini error_setg(errp, "remote port not specified"); 449baacf047SPaolo Bonzini return -1; 450baacf047SPaolo Bonzini } 451baacf047SPaolo Bonzini 452baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv4", 0)) 453baacf047SPaolo Bonzini ai.ai_family = PF_INET; 454baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) 455baacf047SPaolo Bonzini ai.ai_family = PF_INET6; 456baacf047SPaolo Bonzini 457baacf047SPaolo Bonzini if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) { 458baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 459baacf047SPaolo Bonzini gai_strerror(rc)); 460baacf047SPaolo Bonzini return -1; 461baacf047SPaolo Bonzini } 462baacf047SPaolo Bonzini 463baacf047SPaolo Bonzini /* lookup local addr */ 464baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 465baacf047SPaolo Bonzini ai.ai_flags = AI_PASSIVE; 466baacf047SPaolo Bonzini ai.ai_family = peer->ai_family; 467baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 468baacf047SPaolo Bonzini 469baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "localaddr"); 470baacf047SPaolo Bonzini port = qemu_opt_get(opts, "localport"); 471baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 472baacf047SPaolo Bonzini addr = NULL; 473baacf047SPaolo Bonzini } 474baacf047SPaolo Bonzini if (!port || strlen(port) == 0) 475baacf047SPaolo Bonzini port = "0"; 476baacf047SPaolo Bonzini 477baacf047SPaolo Bonzini if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) { 478baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 479baacf047SPaolo Bonzini gai_strerror(rc)); 480baacf047SPaolo Bonzini goto err; 481baacf047SPaolo Bonzini } 482baacf047SPaolo Bonzini 483baacf047SPaolo Bonzini /* create socket */ 484baacf047SPaolo Bonzini sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); 485baacf047SPaolo Bonzini if (sock < 0) { 486235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 487baacf047SPaolo Bonzini goto err; 488baacf047SPaolo Bonzini } 48904fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 490baacf047SPaolo Bonzini 491baacf047SPaolo Bonzini /* bind socket */ 492baacf047SPaolo Bonzini if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { 493235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to bind socket"); 494baacf047SPaolo Bonzini goto err; 495baacf047SPaolo Bonzini } 496baacf047SPaolo Bonzini 497baacf047SPaolo Bonzini /* connect to peer */ 498baacf047SPaolo Bonzini if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { 499235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to connect socket"); 500baacf047SPaolo Bonzini goto err; 501baacf047SPaolo Bonzini } 502baacf047SPaolo Bonzini 503baacf047SPaolo Bonzini freeaddrinfo(local); 504baacf047SPaolo Bonzini freeaddrinfo(peer); 505baacf047SPaolo Bonzini return sock; 506baacf047SPaolo Bonzini 507baacf047SPaolo Bonzini err: 508baacf047SPaolo Bonzini if (-1 != sock) 509baacf047SPaolo Bonzini closesocket(sock); 510baacf047SPaolo Bonzini if (local) 511baacf047SPaolo Bonzini freeaddrinfo(local); 512baacf047SPaolo Bonzini if (peer) 513baacf047SPaolo Bonzini freeaddrinfo(peer); 514baacf047SPaolo Bonzini return -1; 515baacf047SPaolo Bonzini } 516baacf047SPaolo Bonzini 517baacf047SPaolo Bonzini /* compatibility wrapper */ 518f17c90beSKevin Wolf InetSocketAddress *inet_parse(const char *str, Error **errp) 519baacf047SPaolo Bonzini { 520baacf047SPaolo Bonzini InetSocketAddress *addr; 521baacf047SPaolo Bonzini const char *optstr, *h; 52255a10996SKevin Wolf char host[65]; 523baacf047SPaolo Bonzini char port[33]; 524baacf047SPaolo Bonzini int to; 525baacf047SPaolo Bonzini int pos; 526baacf047SPaolo Bonzini 527baacf047SPaolo Bonzini addr = g_new0(InetSocketAddress, 1); 528baacf047SPaolo Bonzini 529baacf047SPaolo Bonzini /* parse address */ 530baacf047SPaolo Bonzini if (str[0] == ':') { 531baacf047SPaolo Bonzini /* no host given */ 532baacf047SPaolo Bonzini host[0] = '\0'; 533baacf047SPaolo Bonzini if (1 != sscanf(str, ":%32[^,]%n", port, &pos)) { 534baacf047SPaolo Bonzini error_setg(errp, "error parsing port in address '%s'", str); 535baacf047SPaolo Bonzini goto fail; 536baacf047SPaolo Bonzini } 537baacf047SPaolo Bonzini } else if (str[0] == '[') { 538baacf047SPaolo Bonzini /* IPv6 addr */ 539baacf047SPaolo Bonzini if (2 != sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos)) { 540baacf047SPaolo Bonzini error_setg(errp, "error parsing IPv6 address '%s'", str); 541baacf047SPaolo Bonzini goto fail; 542baacf047SPaolo Bonzini } 543baacf047SPaolo Bonzini addr->ipv6 = addr->has_ipv6 = true; 544baacf047SPaolo Bonzini } else { 545391b7b97SJán Tomko /* hostname or IPv4 addr */ 546baacf047SPaolo Bonzini if (2 != sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos)) { 547baacf047SPaolo Bonzini error_setg(errp, "error parsing address '%s'", str); 548baacf047SPaolo Bonzini goto fail; 549baacf047SPaolo Bonzini } 550391b7b97SJán Tomko if (host[strspn(host, "0123456789.")] == '\0') { 551391b7b97SJán Tomko addr->ipv4 = addr->has_ipv4 = true; 552391b7b97SJán Tomko } 553baacf047SPaolo Bonzini } 554baacf047SPaolo Bonzini 555baacf047SPaolo Bonzini addr->host = g_strdup(host); 556baacf047SPaolo Bonzini addr->port = g_strdup(port); 557baacf047SPaolo Bonzini 558baacf047SPaolo Bonzini /* parse options */ 559baacf047SPaolo Bonzini optstr = str + pos; 560baacf047SPaolo Bonzini h = strstr(optstr, ",to="); 561baacf047SPaolo Bonzini if (h) { 562baacf047SPaolo Bonzini h += 4; 563baacf047SPaolo Bonzini if (sscanf(h, "%d%n", &to, &pos) != 1 || 564baacf047SPaolo Bonzini (h[pos] != '\0' && h[pos] != ',')) { 565baacf047SPaolo Bonzini error_setg(errp, "error parsing to= argument"); 566baacf047SPaolo Bonzini goto fail; 567baacf047SPaolo Bonzini } 568baacf047SPaolo Bonzini addr->has_to = true; 569baacf047SPaolo Bonzini addr->to = to; 570baacf047SPaolo Bonzini } 571baacf047SPaolo Bonzini if (strstr(optstr, ",ipv4")) { 572baacf047SPaolo Bonzini addr->ipv4 = addr->has_ipv4 = true; 573baacf047SPaolo Bonzini } 574baacf047SPaolo Bonzini if (strstr(optstr, ",ipv6")) { 575baacf047SPaolo Bonzini addr->ipv6 = addr->has_ipv6 = true; 576baacf047SPaolo Bonzini } 577baacf047SPaolo Bonzini return addr; 578baacf047SPaolo Bonzini 579baacf047SPaolo Bonzini fail: 580baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 581baacf047SPaolo Bonzini return NULL; 582baacf047SPaolo Bonzini } 583baacf047SPaolo Bonzini 584f17c90beSKevin Wolf static void inet_addr_to_opts(QemuOpts *opts, const InetSocketAddress *addr) 585baacf047SPaolo Bonzini { 586baacf047SPaolo Bonzini bool ipv4 = addr->ipv4 || !addr->has_ipv4; 587baacf047SPaolo Bonzini bool ipv6 = addr->ipv6 || !addr->has_ipv6; 588baacf047SPaolo Bonzini 589baacf047SPaolo Bonzini if (!ipv4 || !ipv6) { 590cccb7967SMarkus Armbruster qemu_opt_set_bool(opts, "ipv4", ipv4, &error_abort); 591cccb7967SMarkus Armbruster qemu_opt_set_bool(opts, "ipv6", ipv6, &error_abort); 592baacf047SPaolo Bonzini } 593baacf047SPaolo Bonzini if (addr->has_to) { 59462b3de69SMarkus Armbruster qemu_opt_set_number(opts, "to", addr->to, &error_abort); 595baacf047SPaolo Bonzini } 596f43e47dbSMarkus Armbruster qemu_opt_set(opts, "host", addr->host, &error_abort); 597f43e47dbSMarkus Armbruster qemu_opt_set(opts, "port", addr->port, &error_abort); 598baacf047SPaolo Bonzini } 599baacf047SPaolo Bonzini 600baacf047SPaolo Bonzini int inet_listen(const char *str, char *ostr, int olen, 601baacf047SPaolo Bonzini int socktype, int port_offset, Error **errp) 602baacf047SPaolo Bonzini { 603baacf047SPaolo Bonzini QemuOpts *opts; 604baacf047SPaolo Bonzini char *optstr; 605baacf047SPaolo Bonzini int sock = -1; 606baacf047SPaolo Bonzini InetSocketAddress *addr; 607baacf047SPaolo Bonzini 608baacf047SPaolo Bonzini addr = inet_parse(str, errp); 609baacf047SPaolo Bonzini if (addr != NULL) { 61087ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 611baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr); 612baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 613baacf047SPaolo Bonzini sock = inet_listen_opts(opts, port_offset, errp); 614baacf047SPaolo Bonzini if (sock != -1 && ostr) { 615baacf047SPaolo Bonzini optstr = strchr(str, ','); 616baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) { 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 } else { 622baacf047SPaolo Bonzini snprintf(ostr, olen, "%s:%s%s", 623baacf047SPaolo Bonzini qemu_opt_get(opts, "host"), 624baacf047SPaolo Bonzini qemu_opt_get(opts, "port"), 625baacf047SPaolo Bonzini optstr ? optstr : ""); 626baacf047SPaolo Bonzini } 627baacf047SPaolo Bonzini } 628baacf047SPaolo Bonzini qemu_opts_del(opts); 629baacf047SPaolo Bonzini } 630baacf047SPaolo Bonzini return sock; 631baacf047SPaolo Bonzini } 632baacf047SPaolo Bonzini 633baacf047SPaolo Bonzini /** 634baacf047SPaolo Bonzini * Create a blocking socket and connect it to an address. 635baacf047SPaolo Bonzini * 636baacf047SPaolo Bonzini * @str: address string 637baacf047SPaolo Bonzini * @errp: set in case of an error 638baacf047SPaolo Bonzini * 639baacf047SPaolo Bonzini * Returns -1 in case of error, file descriptor on success 640baacf047SPaolo Bonzini **/ 641baacf047SPaolo Bonzini int inet_connect(const char *str, Error **errp) 642baacf047SPaolo Bonzini { 643baacf047SPaolo Bonzini QemuOpts *opts; 644baacf047SPaolo Bonzini int sock = -1; 645baacf047SPaolo Bonzini InetSocketAddress *addr; 646baacf047SPaolo Bonzini 647baacf047SPaolo Bonzini addr = inet_parse(str, errp); 648baacf047SPaolo Bonzini if (addr != NULL) { 64987ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 650baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr); 651baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 652baacf047SPaolo Bonzini sock = inet_connect_opts(opts, errp, NULL, NULL); 653baacf047SPaolo Bonzini qemu_opts_del(opts); 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 QemuOpts *opts; 676baacf047SPaolo Bonzini int sock = -1; 677baacf047SPaolo Bonzini InetSocketAddress *addr; 678baacf047SPaolo Bonzini 679baacf047SPaolo Bonzini g_assert(callback != NULL); 680baacf047SPaolo Bonzini 681baacf047SPaolo Bonzini addr = inet_parse(str, errp); 682baacf047SPaolo Bonzini if (addr != NULL) { 68387ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 684baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr); 685baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 686baacf047SPaolo Bonzini sock = inet_connect_opts(opts, errp, callback, opaque); 687baacf047SPaolo Bonzini qemu_opts_del(opts); 688baacf047SPaolo Bonzini } 689baacf047SPaolo Bonzini return sock; 690baacf047SPaolo Bonzini } 691baacf047SPaolo Bonzini 692baacf047SPaolo Bonzini #ifndef _WIN32 693baacf047SPaolo Bonzini 694baacf047SPaolo Bonzini int unix_listen_opts(QemuOpts *opts, Error **errp) 695baacf047SPaolo Bonzini { 696baacf047SPaolo Bonzini struct sockaddr_un un; 697baacf047SPaolo Bonzini const char *path = qemu_opt_get(opts, "path"); 698baacf047SPaolo Bonzini int sock, fd; 699baacf047SPaolo Bonzini 700baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 701baacf047SPaolo Bonzini if (sock < 0) { 702b658c53dSPaolo Bonzini error_setg_errno(errp, errno, "Failed to create Unix socket"); 703baacf047SPaolo Bonzini return -1; 704baacf047SPaolo Bonzini } 705baacf047SPaolo Bonzini 706baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 707baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 708baacf047SPaolo Bonzini if (path && strlen(path)) { 709baacf047SPaolo Bonzini snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); 710baacf047SPaolo Bonzini } else { 711b658c53dSPaolo Bonzini const char *tmpdir = getenv("TMPDIR"); 712b658c53dSPaolo Bonzini tmpdir = tmpdir ? tmpdir : "/tmp"; 713b658c53dSPaolo Bonzini if (snprintf(un.sun_path, sizeof(un.sun_path), "%s/qemu-socket-XXXXXX", 714b658c53dSPaolo Bonzini tmpdir) >= sizeof(un.sun_path)) { 715b658c53dSPaolo Bonzini error_setg_errno(errp, errno, 716b658c53dSPaolo Bonzini "TMPDIR environment variable (%s) too large", tmpdir); 717b658c53dSPaolo Bonzini goto err; 718b658c53dSPaolo Bonzini } 719b658c53dSPaolo Bonzini 720baacf047SPaolo Bonzini /* 721baacf047SPaolo Bonzini * This dummy fd usage silences the mktemp() unsecure warning. 722baacf047SPaolo Bonzini * Using mkstemp() doesn't make things more secure here 723baacf047SPaolo Bonzini * though. bind() complains about existing files, so we have 724baacf047SPaolo Bonzini * to unlink first and thus re-open the race window. The 725baacf047SPaolo Bonzini * worst case possible is bind() failing, i.e. a DoS attack. 726baacf047SPaolo Bonzini */ 727b658c53dSPaolo Bonzini fd = mkstemp(un.sun_path); 728b658c53dSPaolo Bonzini if (fd < 0) { 729b658c53dSPaolo Bonzini error_setg_errno(errp, errno, 730b658c53dSPaolo Bonzini "Failed to make a temporary socket name in %s", tmpdir); 731b658c53dSPaolo Bonzini goto err; 732b658c53dSPaolo Bonzini } 733b658c53dSPaolo Bonzini close(fd); 734f43e47dbSMarkus Armbruster qemu_opt_set(opts, "path", un.sun_path, &error_abort); 735baacf047SPaolo Bonzini } 736baacf047SPaolo Bonzini 7370ef705a2SCole Robinson if ((access(un.sun_path, F_OK) == 0) && 7380ef705a2SCole Robinson unlink(un.sun_path) < 0) { 7390ef705a2SCole Robinson error_setg_errno(errp, errno, 7400ef705a2SCole Robinson "Failed to unlink socket %s", un.sun_path); 7410ef705a2SCole Robinson goto err; 7420ef705a2SCole Robinson } 743baacf047SPaolo Bonzini if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { 744b658c53dSPaolo Bonzini error_setg_errno(errp, errno, "Failed to bind socket to %s", un.sun_path); 745baacf047SPaolo Bonzini goto err; 746baacf047SPaolo Bonzini } 747baacf047SPaolo Bonzini if (listen(sock, 1) < 0) { 748235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to listen on socket"); 749baacf047SPaolo Bonzini goto err; 750baacf047SPaolo Bonzini } 751baacf047SPaolo Bonzini 752baacf047SPaolo Bonzini return sock; 753baacf047SPaolo Bonzini 754baacf047SPaolo Bonzini err: 755baacf047SPaolo Bonzini closesocket(sock); 756baacf047SPaolo Bonzini return -1; 757baacf047SPaolo Bonzini } 758baacf047SPaolo Bonzini 759baacf047SPaolo Bonzini int unix_connect_opts(QemuOpts *opts, Error **errp, 760baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 761baacf047SPaolo Bonzini { 762baacf047SPaolo Bonzini struct sockaddr_un un; 763baacf047SPaolo Bonzini const char *path = qemu_opt_get(opts, "path"); 764baacf047SPaolo Bonzini ConnectState *connect_state = NULL; 765baacf047SPaolo Bonzini int sock, rc; 766baacf047SPaolo Bonzini 7678108fd3eSGonglei if (path == NULL) { 768312fd5f2SMarkus Armbruster error_setg(errp, "unix connect: no path specified"); 769baacf047SPaolo Bonzini return -1; 770baacf047SPaolo Bonzini } 771baacf047SPaolo Bonzini 772baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 773baacf047SPaolo Bonzini if (sock < 0) { 774235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 775baacf047SPaolo Bonzini return -1; 776baacf047SPaolo Bonzini } 777baacf047SPaolo Bonzini if (callback != NULL) { 778baacf047SPaolo Bonzini connect_state = g_malloc0(sizeof(*connect_state)); 779baacf047SPaolo Bonzini connect_state->callback = callback; 780baacf047SPaolo Bonzini connect_state->opaque = opaque; 781f9e8caccSStefan Hajnoczi qemu_set_nonblock(sock); 782baacf047SPaolo Bonzini } 783baacf047SPaolo Bonzini 784baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 785baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 786baacf047SPaolo Bonzini snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); 787baacf047SPaolo Bonzini 788baacf047SPaolo Bonzini /* connect to peer */ 789baacf047SPaolo Bonzini do { 790baacf047SPaolo Bonzini rc = 0; 791baacf047SPaolo Bonzini if (connect(sock, (struct sockaddr *) &un, sizeof(un)) < 0) { 792baacf047SPaolo Bonzini rc = -socket_error(); 793baacf047SPaolo Bonzini } 794baacf047SPaolo Bonzini } while (rc == -EINTR); 795baacf047SPaolo Bonzini 796baacf047SPaolo Bonzini if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { 797baacf047SPaolo Bonzini connect_state->fd = sock; 798*82e1cc4bSFam Zheng qemu_set_fd_handler(sock, NULL, wait_for_connect, connect_state); 799baacf047SPaolo Bonzini return sock; 800baacf047SPaolo Bonzini } else if (rc >= 0) { 801baacf047SPaolo Bonzini /* non blocking socket immediate success, call callback */ 802baacf047SPaolo Bonzini if (callback != NULL) { 80351795029SCorey Minyard callback(sock, NULL, opaque); 804baacf047SPaolo Bonzini } 805baacf047SPaolo Bonzini } 806baacf047SPaolo Bonzini 807baacf047SPaolo Bonzini if (rc < 0) { 808235256a2SMarkus Armbruster error_setg_errno(errp, -rc, "Failed to connect socket"); 809baacf047SPaolo Bonzini close(sock); 810baacf047SPaolo Bonzini sock = -1; 811baacf047SPaolo Bonzini } 812baacf047SPaolo Bonzini 813baacf047SPaolo Bonzini g_free(connect_state); 814baacf047SPaolo Bonzini return sock; 815baacf047SPaolo Bonzini } 816baacf047SPaolo Bonzini 817baacf047SPaolo Bonzini #else 818baacf047SPaolo Bonzini 819baacf047SPaolo Bonzini int unix_listen_opts(QemuOpts *opts, 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 826baacf047SPaolo Bonzini int unix_connect_opts(QemuOpts *opts, 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 QemuOpts *opts; 839baacf047SPaolo Bonzini char *path, *optstr; 840baacf047SPaolo Bonzini int sock, len; 841baacf047SPaolo Bonzini 84287ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 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); 850f43e47dbSMarkus Armbruster qemu_opt_set(opts, "path", path, &error_abort); 851baacf047SPaolo Bonzini g_free(path); 852baacf047SPaolo Bonzini } 853baacf047SPaolo Bonzini } else { 854f43e47dbSMarkus Armbruster qemu_opt_set(opts, "path", str, &error_abort); 855baacf047SPaolo Bonzini } 856baacf047SPaolo Bonzini 857baacf047SPaolo Bonzini sock = unix_listen_opts(opts, errp); 858baacf047SPaolo Bonzini 859baacf047SPaolo Bonzini if (sock != -1 && ostr) 860baacf047SPaolo Bonzini snprintf(ostr, olen, "%s%s", qemu_opt_get(opts, "path"), optstr ? optstr : ""); 861baacf047SPaolo Bonzini qemu_opts_del(opts); 862baacf047SPaolo Bonzini return sock; 863baacf047SPaolo Bonzini } 864baacf047SPaolo Bonzini 865baacf047SPaolo Bonzini int unix_connect(const char *path, Error **errp) 866baacf047SPaolo Bonzini { 867baacf047SPaolo Bonzini QemuOpts *opts; 868baacf047SPaolo Bonzini int sock; 869baacf047SPaolo Bonzini 87087ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 871f43e47dbSMarkus Armbruster qemu_opt_set(opts, "path", path, &error_abort); 872baacf047SPaolo Bonzini sock = unix_connect_opts(opts, errp, NULL, NULL); 873baacf047SPaolo Bonzini qemu_opts_del(opts); 874baacf047SPaolo Bonzini return sock; 875baacf047SPaolo Bonzini } 876baacf047SPaolo Bonzini 877baacf047SPaolo Bonzini 878baacf047SPaolo Bonzini int unix_nonblocking_connect(const char *path, 879baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, 880baacf047SPaolo Bonzini void *opaque, Error **errp) 881baacf047SPaolo Bonzini { 882baacf047SPaolo Bonzini QemuOpts *opts; 883baacf047SPaolo Bonzini int sock = -1; 884baacf047SPaolo Bonzini 885baacf047SPaolo Bonzini g_assert(callback != NULL); 886baacf047SPaolo Bonzini 88787ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 888f43e47dbSMarkus Armbruster qemu_opt_set(opts, "path", path, &error_abort); 889baacf047SPaolo Bonzini sock = unix_connect_opts(opts, errp, callback, opaque); 890baacf047SPaolo Bonzini qemu_opts_del(opts); 891baacf047SPaolo Bonzini return sock; 892baacf047SPaolo Bonzini } 893baacf047SPaolo Bonzini 894baacf047SPaolo Bonzini SocketAddress *socket_parse(const char *str, Error **errp) 895baacf047SPaolo Bonzini { 896afde3f8bSGerd Hoffmann SocketAddress *addr; 897baacf047SPaolo Bonzini 898afde3f8bSGerd Hoffmann addr = g_new0(SocketAddress, 1); 899baacf047SPaolo Bonzini if (strstart(str, "unix:", NULL)) { 900baacf047SPaolo Bonzini if (str[5] == '\0') { 901312fd5f2SMarkus Armbruster error_setg(errp, "invalid Unix socket address"); 902baacf047SPaolo Bonzini goto fail; 903baacf047SPaolo Bonzini } else { 904baacf047SPaolo Bonzini addr->kind = SOCKET_ADDRESS_KIND_UNIX; 905baacf047SPaolo Bonzini addr->q_unix = g_new(UnixSocketAddress, 1); 906baacf047SPaolo Bonzini addr->q_unix->path = g_strdup(str + 5); 907baacf047SPaolo Bonzini } 908baacf047SPaolo Bonzini } else if (strstart(str, "fd:", NULL)) { 909baacf047SPaolo Bonzini if (str[3] == '\0') { 910312fd5f2SMarkus Armbruster error_setg(errp, "invalid file descriptor address"); 911baacf047SPaolo Bonzini goto fail; 912baacf047SPaolo Bonzini } else { 913baacf047SPaolo Bonzini addr->kind = SOCKET_ADDRESS_KIND_FD; 914baacf047SPaolo Bonzini addr->fd = g_new(String, 1); 915baacf047SPaolo Bonzini addr->fd->str = g_strdup(str + 3); 916baacf047SPaolo Bonzini } 917baacf047SPaolo Bonzini } else { 918baacf047SPaolo Bonzini addr->kind = SOCKET_ADDRESS_KIND_INET; 919baacf047SPaolo Bonzini addr->inet = inet_parse(str, errp); 920baacf047SPaolo Bonzini if (addr->inet == NULL) { 921baacf047SPaolo Bonzini goto fail; 922baacf047SPaolo Bonzini } 923baacf047SPaolo Bonzini } 924baacf047SPaolo Bonzini return addr; 925baacf047SPaolo Bonzini 926baacf047SPaolo Bonzini fail: 927baacf047SPaolo Bonzini qapi_free_SocketAddress(addr); 928baacf047SPaolo Bonzini return NULL; 929baacf047SPaolo Bonzini } 930baacf047SPaolo Bonzini 931baacf047SPaolo Bonzini int socket_connect(SocketAddress *addr, Error **errp, 932baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 933baacf047SPaolo Bonzini { 934baacf047SPaolo Bonzini QemuOpts *opts; 935baacf047SPaolo Bonzini int fd; 936baacf047SPaolo Bonzini 93787ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 938baacf047SPaolo Bonzini switch (addr->kind) { 939baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_INET: 940baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr->inet); 941baacf047SPaolo Bonzini fd = inet_connect_opts(opts, errp, callback, opaque); 942baacf047SPaolo Bonzini break; 943baacf047SPaolo Bonzini 944baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_UNIX: 945f43e47dbSMarkus Armbruster qemu_opt_set(opts, "path", addr->q_unix->path, &error_abort); 946baacf047SPaolo Bonzini fd = unix_connect_opts(opts, errp, callback, opaque); 947baacf047SPaolo Bonzini break; 948baacf047SPaolo Bonzini 949baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_FD: 950baacf047SPaolo Bonzini fd = monitor_get_fd(cur_mon, addr->fd->str, errp); 951d1ec72a4SGerd Hoffmann if (fd >= 0 && callback) { 9521a751ebfSStefan Hajnoczi qemu_set_nonblock(fd); 95351795029SCorey Minyard callback(fd, NULL, opaque); 954baacf047SPaolo Bonzini } 955baacf047SPaolo Bonzini break; 956baacf047SPaolo Bonzini 957baacf047SPaolo Bonzini default: 958baacf047SPaolo Bonzini abort(); 959baacf047SPaolo Bonzini } 960baacf047SPaolo Bonzini qemu_opts_del(opts); 961baacf047SPaolo Bonzini return fd; 962baacf047SPaolo Bonzini } 963baacf047SPaolo Bonzini 964baacf047SPaolo Bonzini int socket_listen(SocketAddress *addr, Error **errp) 965baacf047SPaolo Bonzini { 966baacf047SPaolo Bonzini QemuOpts *opts; 967baacf047SPaolo Bonzini int fd; 968baacf047SPaolo Bonzini 96987ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 970baacf047SPaolo Bonzini switch (addr->kind) { 971baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_INET: 972baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr->inet); 973baacf047SPaolo Bonzini fd = inet_listen_opts(opts, 0, errp); 974baacf047SPaolo Bonzini break; 975baacf047SPaolo Bonzini 976baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_UNIX: 977f43e47dbSMarkus Armbruster qemu_opt_set(opts, "path", addr->q_unix->path, &error_abort); 978baacf047SPaolo Bonzini fd = unix_listen_opts(opts, errp); 979baacf047SPaolo Bonzini break; 980baacf047SPaolo Bonzini 981baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_FD: 982baacf047SPaolo Bonzini fd = monitor_get_fd(cur_mon, addr->fd->str, errp); 983baacf047SPaolo Bonzini break; 984baacf047SPaolo Bonzini 985baacf047SPaolo Bonzini default: 986baacf047SPaolo Bonzini abort(); 987baacf047SPaolo Bonzini } 988baacf047SPaolo Bonzini qemu_opts_del(opts); 989baacf047SPaolo Bonzini return fd; 990baacf047SPaolo Bonzini } 991baacf047SPaolo Bonzini 9923ecc059dSGerd Hoffmann int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) 9933ecc059dSGerd Hoffmann { 9943ecc059dSGerd Hoffmann QemuOpts *opts; 9953ecc059dSGerd Hoffmann int fd; 9963ecc059dSGerd Hoffmann 99787ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 9983ecc059dSGerd Hoffmann switch (remote->kind) { 9993ecc059dSGerd Hoffmann case SOCKET_ADDRESS_KIND_INET: 10008287fea3SPeter Maydell inet_addr_to_opts(opts, remote->inet); 10013ecc059dSGerd Hoffmann if (local) { 1002f43e47dbSMarkus Armbruster qemu_opt_set(opts, "localaddr", local->inet->host, &error_abort); 1003f43e47dbSMarkus Armbruster qemu_opt_set(opts, "localport", local->inet->port, &error_abort); 10043ecc059dSGerd Hoffmann } 10053ecc059dSGerd Hoffmann fd = inet_dgram_opts(opts, errp); 10063ecc059dSGerd Hoffmann break; 10073ecc059dSGerd Hoffmann 10083ecc059dSGerd Hoffmann default: 10093ecc059dSGerd Hoffmann error_setg(errp, "socket type unsupported for datagram"); 10107a5b6af1SGerd Hoffmann fd = -1; 10113ecc059dSGerd Hoffmann } 10123ecc059dSGerd Hoffmann qemu_opts_del(opts); 10133ecc059dSGerd Hoffmann return fd; 10143ecc059dSGerd Hoffmann } 1015