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 } 202f43e47dbSMarkus Armbruster qemu_opt_set(opts, "host", uaddr, &error_abort); 20362b3de69SMarkus Armbruster qemu_opt_set_number(opts, "port", inet_getport(e) - port_offset, 204f43e47dbSMarkus Armbruster &error_abort); 20562b3de69SMarkus Armbruster qemu_opt_set_bool(opts, "ipv6", e->ai_family == PF_INET6, 20662b3de69SMarkus Armbruster &error_abort); 20762b3de69SMarkus Armbruster qemu_opt_set_bool(opts, "ipv4", e->ai_family != PF_INET6, 208f43e47dbSMarkus Armbruster &error_abort); 209baacf047SPaolo Bonzini freeaddrinfo(res); 210baacf047SPaolo Bonzini return slisten; 211baacf047SPaolo Bonzini } 212baacf047SPaolo Bonzini 213baacf047SPaolo Bonzini #ifdef _WIN32 214baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 215baacf047SPaolo Bonzini ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) 216baacf047SPaolo Bonzini #else 217baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 218baacf047SPaolo Bonzini ((rc) == -EINPROGRESS) 219baacf047SPaolo Bonzini #endif 220baacf047SPaolo Bonzini 221baacf047SPaolo Bonzini /* Struct to store connect state for non blocking connect */ 222baacf047SPaolo Bonzini typedef struct ConnectState { 223baacf047SPaolo Bonzini int fd; 224baacf047SPaolo Bonzini struct addrinfo *addr_list; 225baacf047SPaolo Bonzini struct addrinfo *current_addr; 226baacf047SPaolo Bonzini NonBlockingConnectHandler *callback; 227baacf047SPaolo Bonzini void *opaque; 228baacf047SPaolo Bonzini } ConnectState; 229baacf047SPaolo Bonzini 230baacf047SPaolo Bonzini static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, 231baacf047SPaolo Bonzini ConnectState *connect_state, Error **errp); 232baacf047SPaolo Bonzini 233baacf047SPaolo Bonzini static void wait_for_connect(void *opaque) 234baacf047SPaolo Bonzini { 235baacf047SPaolo Bonzini ConnectState *s = opaque; 236baacf047SPaolo Bonzini int val = 0, rc = 0; 237baacf047SPaolo Bonzini socklen_t valsize = sizeof(val); 238baacf047SPaolo Bonzini bool in_progress; 23951795029SCorey Minyard Error *err = NULL; 240baacf047SPaolo Bonzini 241baacf047SPaolo Bonzini qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL); 242baacf047SPaolo Bonzini 243baacf047SPaolo Bonzini do { 2449957fc7fSStefan Weil rc = qemu_getsockopt(s->fd, SOL_SOCKET, SO_ERROR, &val, &valsize); 245baacf047SPaolo Bonzini } while (rc == -1 && socket_error() == EINTR); 246baacf047SPaolo Bonzini 247baacf047SPaolo Bonzini /* update rc to contain error */ 248baacf047SPaolo Bonzini if (!rc && val) { 249baacf047SPaolo Bonzini rc = -1; 25051795029SCorey Minyard errno = val; 251baacf047SPaolo Bonzini } 252baacf047SPaolo Bonzini 253baacf047SPaolo Bonzini /* connect error */ 254baacf047SPaolo Bonzini if (rc < 0) { 25551795029SCorey Minyard error_setg_errno(&err, errno, "Error connecting to socket"); 256baacf047SPaolo Bonzini closesocket(s->fd); 257baacf047SPaolo Bonzini s->fd = rc; 258baacf047SPaolo Bonzini } 259baacf047SPaolo Bonzini 260baacf047SPaolo Bonzini /* try to connect to the next address on the list */ 261baacf047SPaolo Bonzini if (s->current_addr) { 262baacf047SPaolo Bonzini while (s->current_addr->ai_next != NULL && s->fd < 0) { 263baacf047SPaolo Bonzini s->current_addr = s->current_addr->ai_next; 264baacf047SPaolo Bonzini s->fd = inet_connect_addr(s->current_addr, &in_progress, s, NULL); 26551795029SCorey Minyard if (s->fd < 0) { 26651795029SCorey Minyard error_free(err); 26751795029SCorey Minyard err = NULL; 26851795029SCorey Minyard error_setg_errno(&err, errno, "Unable to start socket connect"); 26951795029SCorey Minyard } 270baacf047SPaolo Bonzini /* connect in progress */ 271baacf047SPaolo Bonzini if (in_progress) { 27251795029SCorey Minyard goto out; 273baacf047SPaolo Bonzini } 274baacf047SPaolo Bonzini } 275baacf047SPaolo Bonzini 276baacf047SPaolo Bonzini freeaddrinfo(s->addr_list); 277baacf047SPaolo Bonzini } 278baacf047SPaolo Bonzini 279baacf047SPaolo Bonzini if (s->callback) { 28051795029SCorey Minyard s->callback(s->fd, err, s->opaque); 281baacf047SPaolo Bonzini } 282baacf047SPaolo Bonzini g_free(s); 28351795029SCorey Minyard out: 28451795029SCorey Minyard error_free(err); 285baacf047SPaolo Bonzini } 286baacf047SPaolo Bonzini 287baacf047SPaolo Bonzini static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, 288baacf047SPaolo Bonzini ConnectState *connect_state, Error **errp) 289baacf047SPaolo Bonzini { 290baacf047SPaolo Bonzini int sock, rc; 291baacf047SPaolo Bonzini 292baacf047SPaolo Bonzini *in_progress = false; 293baacf047SPaolo Bonzini 294baacf047SPaolo Bonzini sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); 295baacf047SPaolo Bonzini if (sock < 0) { 296235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 297baacf047SPaolo Bonzini return -1; 298baacf047SPaolo Bonzini } 29904fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 300baacf047SPaolo Bonzini if (connect_state != NULL) { 301f9e8caccSStefan Hajnoczi qemu_set_nonblock(sock); 302baacf047SPaolo Bonzini } 303baacf047SPaolo Bonzini /* connect to peer */ 304baacf047SPaolo Bonzini do { 305baacf047SPaolo Bonzini rc = 0; 306baacf047SPaolo Bonzini if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { 307baacf047SPaolo Bonzini rc = -socket_error(); 308baacf047SPaolo Bonzini } 309baacf047SPaolo Bonzini } while (rc == -EINTR); 310baacf047SPaolo Bonzini 311baacf047SPaolo Bonzini if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { 312baacf047SPaolo Bonzini connect_state->fd = sock; 313baacf047SPaolo Bonzini qemu_set_fd_handler2(sock, NULL, NULL, wait_for_connect, 314baacf047SPaolo Bonzini connect_state); 315baacf047SPaolo Bonzini *in_progress = true; 316baacf047SPaolo Bonzini } else if (rc < 0) { 317235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to connect socket"); 318baacf047SPaolo Bonzini closesocket(sock); 319baacf047SPaolo Bonzini return -1; 320baacf047SPaolo Bonzini } 321baacf047SPaolo Bonzini return sock; 322baacf047SPaolo Bonzini } 323baacf047SPaolo Bonzini 324baacf047SPaolo Bonzini static struct addrinfo *inet_parse_connect_opts(QemuOpts *opts, Error **errp) 325baacf047SPaolo Bonzini { 326baacf047SPaolo Bonzini struct addrinfo ai, *res; 327baacf047SPaolo Bonzini int rc; 328baacf047SPaolo Bonzini const char *addr; 329baacf047SPaolo Bonzini const char *port; 330baacf047SPaolo Bonzini 331baacf047SPaolo Bonzini memset(&ai, 0, sizeof(ai)); 332baacf047SPaolo Bonzini 333baacf047SPaolo Bonzini ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; 334baacf047SPaolo Bonzini ai.ai_family = PF_UNSPEC; 335baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 336baacf047SPaolo Bonzini 337baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "host"); 338baacf047SPaolo Bonzini port = qemu_opt_get(opts, "port"); 339baacf047SPaolo Bonzini if (addr == NULL || port == NULL) { 340baacf047SPaolo Bonzini error_setg(errp, "host and/or port not specified"); 341baacf047SPaolo Bonzini return NULL; 342baacf047SPaolo Bonzini } 343baacf047SPaolo Bonzini 344baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv4", 0)) { 345baacf047SPaolo Bonzini ai.ai_family = PF_INET; 346baacf047SPaolo Bonzini } 347baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) { 348baacf047SPaolo Bonzini ai.ai_family = PF_INET6; 349baacf047SPaolo Bonzini } 350baacf047SPaolo Bonzini 351baacf047SPaolo Bonzini /* lookup */ 352baacf047SPaolo Bonzini rc = getaddrinfo(addr, port, &ai, &res); 353baacf047SPaolo Bonzini if (rc != 0) { 354baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 355baacf047SPaolo Bonzini gai_strerror(rc)); 356baacf047SPaolo Bonzini return NULL; 357baacf047SPaolo Bonzini } 358baacf047SPaolo Bonzini return res; 359baacf047SPaolo Bonzini } 360baacf047SPaolo Bonzini 361baacf047SPaolo Bonzini /** 362baacf047SPaolo Bonzini * Create a socket and connect it to an address. 363baacf047SPaolo Bonzini * 364baacf047SPaolo Bonzini * @opts: QEMU options, recognized parameters strings "host" and "port", 365baacf047SPaolo Bonzini * bools "ipv4" and "ipv6". 366baacf047SPaolo Bonzini * @errp: set on error 367baacf047SPaolo Bonzini * @callback: callback function for non-blocking connect 368baacf047SPaolo Bonzini * @opaque: opaque for callback function 369baacf047SPaolo Bonzini * 370baacf047SPaolo Bonzini * Returns: -1 on error, file descriptor on success. 371baacf047SPaolo Bonzini * 372baacf047SPaolo Bonzini * If @callback is non-null, the connect is non-blocking. If this 373baacf047SPaolo Bonzini * function succeeds, callback will be called when the connection 374baacf047SPaolo Bonzini * completes, with the file descriptor on success, or -1 on error. 375baacf047SPaolo Bonzini */ 376baacf047SPaolo Bonzini int inet_connect_opts(QemuOpts *opts, Error **errp, 377baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 378baacf047SPaolo Bonzini { 3793f9286b7SMarkus Armbruster Error *local_err = NULL; 380baacf047SPaolo Bonzini struct addrinfo *res, *e; 381baacf047SPaolo Bonzini int sock = -1; 382baacf047SPaolo Bonzini bool in_progress; 383baacf047SPaolo Bonzini ConnectState *connect_state = NULL; 384baacf047SPaolo Bonzini 385baacf047SPaolo Bonzini res = inet_parse_connect_opts(opts, errp); 386baacf047SPaolo Bonzini if (!res) { 387baacf047SPaolo Bonzini return -1; 388baacf047SPaolo Bonzini } 389baacf047SPaolo Bonzini 390baacf047SPaolo Bonzini if (callback != NULL) { 391baacf047SPaolo Bonzini connect_state = g_malloc0(sizeof(*connect_state)); 392baacf047SPaolo Bonzini connect_state->addr_list = res; 393baacf047SPaolo Bonzini connect_state->callback = callback; 394baacf047SPaolo Bonzini connect_state->opaque = opaque; 395baacf047SPaolo Bonzini } 396baacf047SPaolo Bonzini 397baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 3983f9286b7SMarkus Armbruster error_free(local_err); 3993f9286b7SMarkus Armbruster local_err = NULL; 400baacf047SPaolo Bonzini if (connect_state != NULL) { 401baacf047SPaolo Bonzini connect_state->current_addr = e; 402baacf047SPaolo Bonzini } 4033f9286b7SMarkus Armbruster sock = inet_connect_addr(e, &in_progress, connect_state, &local_err); 4043f9286b7SMarkus Armbruster if (sock >= 0) { 405baacf047SPaolo Bonzini break; 406baacf047SPaolo Bonzini } 407baacf047SPaolo Bonzini } 4083f9286b7SMarkus Armbruster 4093f9286b7SMarkus Armbruster if (sock < 0) { 4103f9286b7SMarkus Armbruster error_propagate(errp, local_err); 4113f9286b7SMarkus Armbruster } else if (in_progress) { 4123f9286b7SMarkus Armbruster /* wait_for_connect() will do the rest */ 4133f9286b7SMarkus Armbruster return sock; 4143f9286b7SMarkus Armbruster } else { 4153f9286b7SMarkus Armbruster if (callback) { 41651795029SCorey Minyard callback(sock, NULL, opaque); 4173f9286b7SMarkus Armbruster } 4183f9286b7SMarkus Armbruster } 419baacf047SPaolo Bonzini g_free(connect_state); 420baacf047SPaolo Bonzini freeaddrinfo(res); 421baacf047SPaolo Bonzini return sock; 422baacf047SPaolo Bonzini } 423baacf047SPaolo Bonzini 424baacf047SPaolo Bonzini int inet_dgram_opts(QemuOpts *opts, Error **errp) 425baacf047SPaolo Bonzini { 426baacf047SPaolo Bonzini struct addrinfo ai, *peer = NULL, *local = NULL; 427baacf047SPaolo Bonzini const char *addr; 428baacf047SPaolo Bonzini const char *port; 429baacf047SPaolo Bonzini int sock = -1, rc; 430baacf047SPaolo Bonzini 431baacf047SPaolo Bonzini /* lookup peer addr */ 432baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 433baacf047SPaolo Bonzini ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; 434baacf047SPaolo Bonzini ai.ai_family = PF_UNSPEC; 435baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 436baacf047SPaolo Bonzini 437baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "host"); 438baacf047SPaolo Bonzini port = qemu_opt_get(opts, "port"); 439baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 440baacf047SPaolo Bonzini addr = "localhost"; 441baacf047SPaolo Bonzini } 442baacf047SPaolo Bonzini if (port == NULL || strlen(port) == 0) { 443baacf047SPaolo Bonzini error_setg(errp, "remote port not specified"); 444baacf047SPaolo Bonzini return -1; 445baacf047SPaolo Bonzini } 446baacf047SPaolo Bonzini 447baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv4", 0)) 448baacf047SPaolo Bonzini ai.ai_family = PF_INET; 449baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) 450baacf047SPaolo Bonzini ai.ai_family = PF_INET6; 451baacf047SPaolo Bonzini 452baacf047SPaolo Bonzini if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) { 453baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 454baacf047SPaolo Bonzini gai_strerror(rc)); 455baacf047SPaolo Bonzini return -1; 456baacf047SPaolo Bonzini } 457baacf047SPaolo Bonzini 458baacf047SPaolo Bonzini /* lookup local addr */ 459baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 460baacf047SPaolo Bonzini ai.ai_flags = AI_PASSIVE; 461baacf047SPaolo Bonzini ai.ai_family = peer->ai_family; 462baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 463baacf047SPaolo Bonzini 464baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "localaddr"); 465baacf047SPaolo Bonzini port = qemu_opt_get(opts, "localport"); 466baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 467baacf047SPaolo Bonzini addr = NULL; 468baacf047SPaolo Bonzini } 469baacf047SPaolo Bonzini if (!port || strlen(port) == 0) 470baacf047SPaolo Bonzini port = "0"; 471baacf047SPaolo Bonzini 472baacf047SPaolo Bonzini if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) { 473baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 474baacf047SPaolo Bonzini gai_strerror(rc)); 475baacf047SPaolo Bonzini goto err; 476baacf047SPaolo Bonzini } 477baacf047SPaolo Bonzini 478baacf047SPaolo Bonzini /* create socket */ 479baacf047SPaolo Bonzini sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); 480baacf047SPaolo Bonzini if (sock < 0) { 481235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 482baacf047SPaolo Bonzini goto err; 483baacf047SPaolo Bonzini } 48404fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 485baacf047SPaolo Bonzini 486baacf047SPaolo Bonzini /* bind socket */ 487baacf047SPaolo Bonzini if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { 488235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to bind socket"); 489baacf047SPaolo Bonzini goto err; 490baacf047SPaolo Bonzini } 491baacf047SPaolo Bonzini 492baacf047SPaolo Bonzini /* connect to peer */ 493baacf047SPaolo Bonzini if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { 494235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to connect socket"); 495baacf047SPaolo Bonzini goto err; 496baacf047SPaolo Bonzini } 497baacf047SPaolo Bonzini 498baacf047SPaolo Bonzini freeaddrinfo(local); 499baacf047SPaolo Bonzini freeaddrinfo(peer); 500baacf047SPaolo Bonzini return sock; 501baacf047SPaolo Bonzini 502baacf047SPaolo Bonzini err: 503baacf047SPaolo Bonzini if (-1 != sock) 504baacf047SPaolo Bonzini closesocket(sock); 505baacf047SPaolo Bonzini if (local) 506baacf047SPaolo Bonzini freeaddrinfo(local); 507baacf047SPaolo Bonzini if (peer) 508baacf047SPaolo Bonzini freeaddrinfo(peer); 509baacf047SPaolo Bonzini return -1; 510baacf047SPaolo Bonzini } 511baacf047SPaolo Bonzini 512baacf047SPaolo Bonzini /* compatibility wrapper */ 513f17c90beSKevin Wolf InetSocketAddress *inet_parse(const char *str, Error **errp) 514baacf047SPaolo Bonzini { 515baacf047SPaolo Bonzini InetSocketAddress *addr; 516baacf047SPaolo Bonzini const char *optstr, *h; 51755a10996SKevin Wolf char host[65]; 518baacf047SPaolo Bonzini char port[33]; 519baacf047SPaolo Bonzini int to; 520baacf047SPaolo Bonzini int pos; 521baacf047SPaolo Bonzini 522baacf047SPaolo Bonzini addr = g_new0(InetSocketAddress, 1); 523baacf047SPaolo Bonzini 524baacf047SPaolo Bonzini /* parse address */ 525baacf047SPaolo Bonzini if (str[0] == ':') { 526baacf047SPaolo Bonzini /* no host given */ 527baacf047SPaolo Bonzini host[0] = '\0'; 528baacf047SPaolo Bonzini if (1 != sscanf(str, ":%32[^,]%n", port, &pos)) { 529baacf047SPaolo Bonzini error_setg(errp, "error parsing port in address '%s'", str); 530baacf047SPaolo Bonzini goto fail; 531baacf047SPaolo Bonzini } 532baacf047SPaolo Bonzini } else if (str[0] == '[') { 533baacf047SPaolo Bonzini /* IPv6 addr */ 534baacf047SPaolo Bonzini if (2 != sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos)) { 535baacf047SPaolo Bonzini error_setg(errp, "error parsing IPv6 address '%s'", str); 536baacf047SPaolo Bonzini goto fail; 537baacf047SPaolo Bonzini } 538baacf047SPaolo Bonzini addr->ipv6 = addr->has_ipv6 = true; 539baacf047SPaolo Bonzini } else { 540391b7b97SJán Tomko /* hostname or IPv4 addr */ 541baacf047SPaolo Bonzini if (2 != sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos)) { 542baacf047SPaolo Bonzini error_setg(errp, "error parsing address '%s'", str); 543baacf047SPaolo Bonzini goto fail; 544baacf047SPaolo Bonzini } 545391b7b97SJán Tomko if (host[strspn(host, "0123456789.")] == '\0') { 546391b7b97SJán Tomko addr->ipv4 = addr->has_ipv4 = true; 547391b7b97SJán Tomko } 548baacf047SPaolo Bonzini } 549baacf047SPaolo Bonzini 550baacf047SPaolo Bonzini addr->host = g_strdup(host); 551baacf047SPaolo Bonzini addr->port = g_strdup(port); 552baacf047SPaolo Bonzini 553baacf047SPaolo Bonzini /* parse options */ 554baacf047SPaolo Bonzini optstr = str + pos; 555baacf047SPaolo Bonzini h = strstr(optstr, ",to="); 556baacf047SPaolo Bonzini if (h) { 557baacf047SPaolo Bonzini h += 4; 558baacf047SPaolo Bonzini if (sscanf(h, "%d%n", &to, &pos) != 1 || 559baacf047SPaolo Bonzini (h[pos] != '\0' && h[pos] != ',')) { 560baacf047SPaolo Bonzini error_setg(errp, "error parsing to= argument"); 561baacf047SPaolo Bonzini goto fail; 562baacf047SPaolo Bonzini } 563baacf047SPaolo Bonzini addr->has_to = true; 564baacf047SPaolo Bonzini addr->to = to; 565baacf047SPaolo Bonzini } 566baacf047SPaolo Bonzini if (strstr(optstr, ",ipv4")) { 567baacf047SPaolo Bonzini addr->ipv4 = addr->has_ipv4 = true; 568baacf047SPaolo Bonzini } 569baacf047SPaolo Bonzini if (strstr(optstr, ",ipv6")) { 570baacf047SPaolo Bonzini addr->ipv6 = addr->has_ipv6 = true; 571baacf047SPaolo Bonzini } 572baacf047SPaolo Bonzini return addr; 573baacf047SPaolo Bonzini 574baacf047SPaolo Bonzini fail: 575baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 576baacf047SPaolo Bonzini return NULL; 577baacf047SPaolo Bonzini } 578baacf047SPaolo Bonzini 579f17c90beSKevin Wolf static void inet_addr_to_opts(QemuOpts *opts, const InetSocketAddress *addr) 580baacf047SPaolo Bonzini { 581baacf047SPaolo Bonzini bool ipv4 = addr->ipv4 || !addr->has_ipv4; 582baacf047SPaolo Bonzini bool ipv6 = addr->ipv6 || !addr->has_ipv6; 583baacf047SPaolo Bonzini 584baacf047SPaolo Bonzini if (!ipv4 || !ipv6) { 585cccb7967SMarkus Armbruster qemu_opt_set_bool(opts, "ipv4", ipv4, &error_abort); 586cccb7967SMarkus Armbruster qemu_opt_set_bool(opts, "ipv6", ipv6, &error_abort); 587baacf047SPaolo Bonzini } 588baacf047SPaolo Bonzini if (addr->has_to) { 58962b3de69SMarkus Armbruster qemu_opt_set_number(opts, "to", addr->to, &error_abort); 590baacf047SPaolo Bonzini } 591f43e47dbSMarkus Armbruster qemu_opt_set(opts, "host", addr->host, &error_abort); 592f43e47dbSMarkus Armbruster qemu_opt_set(opts, "port", addr->port, &error_abort); 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); 729f43e47dbSMarkus Armbruster qemu_opt_set(opts, "path", un.sun_path, &error_abort); 730baacf047SPaolo Bonzini } 731baacf047SPaolo Bonzini 732*0ef705a2SCole Robinson if ((access(un.sun_path, F_OK) == 0) && 733*0ef705a2SCole Robinson unlink(un.sun_path) < 0) { 734*0ef705a2SCole Robinson error_setg_errno(errp, errno, 735*0ef705a2SCole Robinson "Failed to unlink socket %s", un.sun_path); 736*0ef705a2SCole Robinson goto err; 737*0ef705a2SCole Robinson } 738baacf047SPaolo Bonzini if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { 739b658c53dSPaolo Bonzini error_setg_errno(errp, errno, "Failed to bind socket to %s", un.sun_path); 740baacf047SPaolo Bonzini goto err; 741baacf047SPaolo Bonzini } 742baacf047SPaolo Bonzini if (listen(sock, 1) < 0) { 743235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to listen on socket"); 744baacf047SPaolo Bonzini goto err; 745baacf047SPaolo Bonzini } 746baacf047SPaolo Bonzini 747baacf047SPaolo Bonzini return sock; 748baacf047SPaolo Bonzini 749baacf047SPaolo Bonzini err: 750baacf047SPaolo Bonzini closesocket(sock); 751baacf047SPaolo Bonzini return -1; 752baacf047SPaolo Bonzini } 753baacf047SPaolo Bonzini 754baacf047SPaolo Bonzini int unix_connect_opts(QemuOpts *opts, Error **errp, 755baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 756baacf047SPaolo Bonzini { 757baacf047SPaolo Bonzini struct sockaddr_un un; 758baacf047SPaolo Bonzini const char *path = qemu_opt_get(opts, "path"); 759baacf047SPaolo Bonzini ConnectState *connect_state = NULL; 760baacf047SPaolo Bonzini int sock, rc; 761baacf047SPaolo Bonzini 7628108fd3eSGonglei if (path == NULL) { 763312fd5f2SMarkus Armbruster error_setg(errp, "unix connect: no path specified"); 764baacf047SPaolo Bonzini return -1; 765baacf047SPaolo Bonzini } 766baacf047SPaolo Bonzini 767baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 768baacf047SPaolo Bonzini if (sock < 0) { 769235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 770baacf047SPaolo Bonzini return -1; 771baacf047SPaolo Bonzini } 772baacf047SPaolo Bonzini if (callback != NULL) { 773baacf047SPaolo Bonzini connect_state = g_malloc0(sizeof(*connect_state)); 774baacf047SPaolo Bonzini connect_state->callback = callback; 775baacf047SPaolo Bonzini connect_state->opaque = opaque; 776f9e8caccSStefan Hajnoczi qemu_set_nonblock(sock); 777baacf047SPaolo Bonzini } 778baacf047SPaolo Bonzini 779baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 780baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 781baacf047SPaolo Bonzini snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); 782baacf047SPaolo Bonzini 783baacf047SPaolo Bonzini /* connect to peer */ 784baacf047SPaolo Bonzini do { 785baacf047SPaolo Bonzini rc = 0; 786baacf047SPaolo Bonzini if (connect(sock, (struct sockaddr *) &un, sizeof(un)) < 0) { 787baacf047SPaolo Bonzini rc = -socket_error(); 788baacf047SPaolo Bonzini } 789baacf047SPaolo Bonzini } while (rc == -EINTR); 790baacf047SPaolo Bonzini 791baacf047SPaolo Bonzini if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { 792baacf047SPaolo Bonzini connect_state->fd = sock; 793baacf047SPaolo Bonzini qemu_set_fd_handler2(sock, NULL, NULL, wait_for_connect, 794baacf047SPaolo Bonzini connect_state); 795baacf047SPaolo Bonzini return sock; 796baacf047SPaolo Bonzini } else if (rc >= 0) { 797baacf047SPaolo Bonzini /* non blocking socket immediate success, call callback */ 798baacf047SPaolo Bonzini if (callback != NULL) { 79951795029SCorey Minyard callback(sock, NULL, opaque); 800baacf047SPaolo Bonzini } 801baacf047SPaolo Bonzini } 802baacf047SPaolo Bonzini 803baacf047SPaolo Bonzini if (rc < 0) { 804235256a2SMarkus Armbruster error_setg_errno(errp, -rc, "Failed to connect socket"); 805baacf047SPaolo Bonzini close(sock); 806baacf047SPaolo Bonzini sock = -1; 807baacf047SPaolo Bonzini } 808baacf047SPaolo Bonzini 809baacf047SPaolo Bonzini g_free(connect_state); 810baacf047SPaolo Bonzini return sock; 811baacf047SPaolo Bonzini } 812baacf047SPaolo Bonzini 813baacf047SPaolo Bonzini #else 814baacf047SPaolo Bonzini 815baacf047SPaolo Bonzini int unix_listen_opts(QemuOpts *opts, Error **errp) 816baacf047SPaolo Bonzini { 817baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 818baacf047SPaolo Bonzini errno = ENOTSUP; 819baacf047SPaolo Bonzini return -1; 820baacf047SPaolo Bonzini } 821baacf047SPaolo Bonzini 822baacf047SPaolo Bonzini int unix_connect_opts(QemuOpts *opts, Error **errp, 823baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 824baacf047SPaolo Bonzini { 825baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 826baacf047SPaolo Bonzini errno = ENOTSUP; 827baacf047SPaolo Bonzini return -1; 828baacf047SPaolo Bonzini } 829baacf047SPaolo Bonzini #endif 830baacf047SPaolo Bonzini 831baacf047SPaolo Bonzini /* compatibility wrapper */ 832baacf047SPaolo Bonzini int unix_listen(const char *str, char *ostr, int olen, Error **errp) 833baacf047SPaolo Bonzini { 834baacf047SPaolo Bonzini QemuOpts *opts; 835baacf047SPaolo Bonzini char *path, *optstr; 836baacf047SPaolo Bonzini int sock, len; 837baacf047SPaolo Bonzini 83887ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 839baacf047SPaolo Bonzini 840baacf047SPaolo Bonzini optstr = strchr(str, ','); 841baacf047SPaolo Bonzini if (optstr) { 842baacf047SPaolo Bonzini len = optstr - str; 843baacf047SPaolo Bonzini if (len) { 844baacf047SPaolo Bonzini path = g_malloc(len+1); 845baacf047SPaolo Bonzini snprintf(path, len+1, "%.*s", len, str); 846f43e47dbSMarkus Armbruster qemu_opt_set(opts, "path", path, &error_abort); 847baacf047SPaolo Bonzini g_free(path); 848baacf047SPaolo Bonzini } 849baacf047SPaolo Bonzini } else { 850f43e47dbSMarkus Armbruster qemu_opt_set(opts, "path", str, &error_abort); 851baacf047SPaolo Bonzini } 852baacf047SPaolo Bonzini 853baacf047SPaolo Bonzini sock = unix_listen_opts(opts, errp); 854baacf047SPaolo Bonzini 855baacf047SPaolo Bonzini if (sock != -1 && ostr) 856baacf047SPaolo Bonzini snprintf(ostr, olen, "%s%s", qemu_opt_get(opts, "path"), optstr ? optstr : ""); 857baacf047SPaolo Bonzini qemu_opts_del(opts); 858baacf047SPaolo Bonzini return sock; 859baacf047SPaolo Bonzini } 860baacf047SPaolo Bonzini 861baacf047SPaolo Bonzini int unix_connect(const char *path, Error **errp) 862baacf047SPaolo Bonzini { 863baacf047SPaolo Bonzini QemuOpts *opts; 864baacf047SPaolo Bonzini int sock; 865baacf047SPaolo Bonzini 86687ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 867f43e47dbSMarkus Armbruster qemu_opt_set(opts, "path", path, &error_abort); 868baacf047SPaolo Bonzini sock = unix_connect_opts(opts, errp, NULL, NULL); 869baacf047SPaolo Bonzini qemu_opts_del(opts); 870baacf047SPaolo Bonzini return sock; 871baacf047SPaolo Bonzini } 872baacf047SPaolo Bonzini 873baacf047SPaolo Bonzini 874baacf047SPaolo Bonzini int unix_nonblocking_connect(const char *path, 875baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, 876baacf047SPaolo Bonzini void *opaque, Error **errp) 877baacf047SPaolo Bonzini { 878baacf047SPaolo Bonzini QemuOpts *opts; 879baacf047SPaolo Bonzini int sock = -1; 880baacf047SPaolo Bonzini 881baacf047SPaolo Bonzini g_assert(callback != NULL); 882baacf047SPaolo Bonzini 88387ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 884f43e47dbSMarkus Armbruster qemu_opt_set(opts, "path", path, &error_abort); 885baacf047SPaolo Bonzini sock = unix_connect_opts(opts, errp, callback, opaque); 886baacf047SPaolo Bonzini qemu_opts_del(opts); 887baacf047SPaolo Bonzini return sock; 888baacf047SPaolo Bonzini } 889baacf047SPaolo Bonzini 890baacf047SPaolo Bonzini SocketAddress *socket_parse(const char *str, Error **errp) 891baacf047SPaolo Bonzini { 892afde3f8bSGerd Hoffmann SocketAddress *addr; 893baacf047SPaolo Bonzini 894afde3f8bSGerd Hoffmann addr = g_new0(SocketAddress, 1); 895baacf047SPaolo Bonzini if (strstart(str, "unix:", NULL)) { 896baacf047SPaolo Bonzini if (str[5] == '\0') { 897312fd5f2SMarkus Armbruster error_setg(errp, "invalid Unix socket address"); 898baacf047SPaolo Bonzini goto fail; 899baacf047SPaolo Bonzini } else { 900baacf047SPaolo Bonzini addr->kind = SOCKET_ADDRESS_KIND_UNIX; 901baacf047SPaolo Bonzini addr->q_unix = g_new(UnixSocketAddress, 1); 902baacf047SPaolo Bonzini addr->q_unix->path = g_strdup(str + 5); 903baacf047SPaolo Bonzini } 904baacf047SPaolo Bonzini } else if (strstart(str, "fd:", NULL)) { 905baacf047SPaolo Bonzini if (str[3] == '\0') { 906312fd5f2SMarkus Armbruster error_setg(errp, "invalid file descriptor address"); 907baacf047SPaolo Bonzini goto fail; 908baacf047SPaolo Bonzini } else { 909baacf047SPaolo Bonzini addr->kind = SOCKET_ADDRESS_KIND_FD; 910baacf047SPaolo Bonzini addr->fd = g_new(String, 1); 911baacf047SPaolo Bonzini addr->fd->str = g_strdup(str + 3); 912baacf047SPaolo Bonzini } 913baacf047SPaolo Bonzini } else { 914baacf047SPaolo Bonzini addr->kind = SOCKET_ADDRESS_KIND_INET; 915baacf047SPaolo Bonzini addr->inet = inet_parse(str, errp); 916baacf047SPaolo Bonzini if (addr->inet == NULL) { 917baacf047SPaolo Bonzini goto fail; 918baacf047SPaolo Bonzini } 919baacf047SPaolo Bonzini } 920baacf047SPaolo Bonzini return addr; 921baacf047SPaolo Bonzini 922baacf047SPaolo Bonzini fail: 923baacf047SPaolo Bonzini qapi_free_SocketAddress(addr); 924baacf047SPaolo Bonzini return NULL; 925baacf047SPaolo Bonzini } 926baacf047SPaolo Bonzini 927baacf047SPaolo Bonzini int socket_connect(SocketAddress *addr, Error **errp, 928baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 929baacf047SPaolo Bonzini { 930baacf047SPaolo Bonzini QemuOpts *opts; 931baacf047SPaolo Bonzini int fd; 932baacf047SPaolo Bonzini 93387ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 934baacf047SPaolo Bonzini switch (addr->kind) { 935baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_INET: 936baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr->inet); 937baacf047SPaolo Bonzini fd = inet_connect_opts(opts, errp, callback, opaque); 938baacf047SPaolo Bonzini break; 939baacf047SPaolo Bonzini 940baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_UNIX: 941f43e47dbSMarkus Armbruster qemu_opt_set(opts, "path", addr->q_unix->path, &error_abort); 942baacf047SPaolo Bonzini fd = unix_connect_opts(opts, errp, callback, opaque); 943baacf047SPaolo Bonzini break; 944baacf047SPaolo Bonzini 945baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_FD: 946baacf047SPaolo Bonzini fd = monitor_get_fd(cur_mon, addr->fd->str, errp); 947d1ec72a4SGerd Hoffmann if (fd >= 0 && callback) { 9481a751ebfSStefan Hajnoczi qemu_set_nonblock(fd); 94951795029SCorey Minyard callback(fd, NULL, opaque); 950baacf047SPaolo Bonzini } 951baacf047SPaolo Bonzini break; 952baacf047SPaolo Bonzini 953baacf047SPaolo Bonzini default: 954baacf047SPaolo Bonzini abort(); 955baacf047SPaolo Bonzini } 956baacf047SPaolo Bonzini qemu_opts_del(opts); 957baacf047SPaolo Bonzini return fd; 958baacf047SPaolo Bonzini } 959baacf047SPaolo Bonzini 960baacf047SPaolo Bonzini int socket_listen(SocketAddress *addr, Error **errp) 961baacf047SPaolo Bonzini { 962baacf047SPaolo Bonzini QemuOpts *opts; 963baacf047SPaolo Bonzini int fd; 964baacf047SPaolo Bonzini 96587ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 966baacf047SPaolo Bonzini switch (addr->kind) { 967baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_INET: 968baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr->inet); 969baacf047SPaolo Bonzini fd = inet_listen_opts(opts, 0, errp); 970baacf047SPaolo Bonzini break; 971baacf047SPaolo Bonzini 972baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_UNIX: 973f43e47dbSMarkus Armbruster qemu_opt_set(opts, "path", addr->q_unix->path, &error_abort); 974baacf047SPaolo Bonzini fd = unix_listen_opts(opts, errp); 975baacf047SPaolo Bonzini break; 976baacf047SPaolo Bonzini 977baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_FD: 978baacf047SPaolo Bonzini fd = monitor_get_fd(cur_mon, addr->fd->str, errp); 979baacf047SPaolo Bonzini break; 980baacf047SPaolo Bonzini 981baacf047SPaolo Bonzini default: 982baacf047SPaolo Bonzini abort(); 983baacf047SPaolo Bonzini } 984baacf047SPaolo Bonzini qemu_opts_del(opts); 985baacf047SPaolo Bonzini return fd; 986baacf047SPaolo Bonzini } 987baacf047SPaolo Bonzini 9883ecc059dSGerd Hoffmann int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) 9893ecc059dSGerd Hoffmann { 9903ecc059dSGerd Hoffmann QemuOpts *opts; 9913ecc059dSGerd Hoffmann int fd; 9923ecc059dSGerd Hoffmann 99387ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 9943ecc059dSGerd Hoffmann switch (remote->kind) { 9953ecc059dSGerd Hoffmann case SOCKET_ADDRESS_KIND_INET: 9968287fea3SPeter Maydell inet_addr_to_opts(opts, remote->inet); 9973ecc059dSGerd Hoffmann if (local) { 998f43e47dbSMarkus Armbruster qemu_opt_set(opts, "localaddr", local->inet->host, &error_abort); 999f43e47dbSMarkus Armbruster qemu_opt_set(opts, "localport", local->inet->port, &error_abort); 10003ecc059dSGerd Hoffmann } 10013ecc059dSGerd Hoffmann fd = inet_dgram_opts(opts, errp); 10023ecc059dSGerd Hoffmann break; 10033ecc059dSGerd Hoffmann 10043ecc059dSGerd Hoffmann default: 10053ecc059dSGerd Hoffmann error_setg(errp, "socket type unsupported for datagram"); 10067a5b6af1SGerd Hoffmann fd = -1; 10073ecc059dSGerd Hoffmann } 10083ecc059dSGerd Hoffmann qemu_opts_del(opts); 10093ecc059dSGerd Hoffmann return fd; 10103ecc059dSGerd Hoffmann } 1011