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 33baacf047SPaolo Bonzini static const int on=1, off=0; 34baacf047SPaolo Bonzini 35e62be888SKevin Wolf /* used temporarily until all users are converted to QemuOpts */ 36e62be888SKevin Wolf QemuOptsList socket_optslist = { 37e62be888SKevin Wolf .name = "socket", 38e62be888SKevin Wolf .head = QTAILQ_HEAD_INITIALIZER(socket_optslist.head), 39baacf047SPaolo Bonzini .desc = { 40baacf047SPaolo Bonzini { 41baacf047SPaolo Bonzini .name = "path", 42baacf047SPaolo Bonzini .type = QEMU_OPT_STRING, 43baacf047SPaolo Bonzini },{ 44baacf047SPaolo Bonzini .name = "host", 45baacf047SPaolo Bonzini .type = QEMU_OPT_STRING, 46baacf047SPaolo Bonzini },{ 47baacf047SPaolo Bonzini .name = "port", 48baacf047SPaolo Bonzini .type = QEMU_OPT_STRING, 49baacf047SPaolo Bonzini },{ 50baacf047SPaolo Bonzini .name = "to", 51baacf047SPaolo Bonzini .type = QEMU_OPT_NUMBER, 52baacf047SPaolo Bonzini },{ 53baacf047SPaolo Bonzini .name = "ipv4", 54baacf047SPaolo Bonzini .type = QEMU_OPT_BOOL, 55baacf047SPaolo Bonzini },{ 56baacf047SPaolo Bonzini .name = "ipv6", 57baacf047SPaolo Bonzini .type = QEMU_OPT_BOOL, 58baacf047SPaolo Bonzini }, 59baacf047SPaolo Bonzini { /* end if list */ } 60baacf047SPaolo Bonzini }, 61baacf047SPaolo Bonzini }; 62baacf047SPaolo Bonzini 63baacf047SPaolo Bonzini static int inet_getport(struct addrinfo *e) 64baacf047SPaolo Bonzini { 65baacf047SPaolo Bonzini struct sockaddr_in *i4; 66baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 67baacf047SPaolo Bonzini 68baacf047SPaolo Bonzini switch (e->ai_family) { 69baacf047SPaolo Bonzini case PF_INET6: 70baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 71baacf047SPaolo Bonzini return ntohs(i6->sin6_port); 72baacf047SPaolo Bonzini case PF_INET: 73baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 74baacf047SPaolo Bonzini return ntohs(i4->sin_port); 75baacf047SPaolo Bonzini default: 76baacf047SPaolo Bonzini return 0; 77baacf047SPaolo Bonzini } 78baacf047SPaolo Bonzini } 79baacf047SPaolo Bonzini 80baacf047SPaolo Bonzini static void inet_setport(struct addrinfo *e, int port) 81baacf047SPaolo Bonzini { 82baacf047SPaolo Bonzini struct sockaddr_in *i4; 83baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 84baacf047SPaolo Bonzini 85baacf047SPaolo Bonzini switch (e->ai_family) { 86baacf047SPaolo Bonzini case PF_INET6: 87baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 88baacf047SPaolo Bonzini i6->sin6_port = htons(port); 89baacf047SPaolo Bonzini break; 90baacf047SPaolo Bonzini case PF_INET: 91baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 92baacf047SPaolo Bonzini i4->sin_port = htons(port); 93baacf047SPaolo Bonzini break; 94baacf047SPaolo Bonzini } 95baacf047SPaolo Bonzini } 96baacf047SPaolo Bonzini 97baacf047SPaolo Bonzini const char *inet_strfamily(int family) 98baacf047SPaolo Bonzini { 99baacf047SPaolo Bonzini switch (family) { 100baacf047SPaolo Bonzini case PF_INET6: return "ipv6"; 101baacf047SPaolo Bonzini case PF_INET: return "ipv4"; 102baacf047SPaolo Bonzini case PF_UNIX: return "unix"; 103baacf047SPaolo Bonzini } 104baacf047SPaolo Bonzini return "unknown"; 105baacf047SPaolo Bonzini } 106baacf047SPaolo Bonzini 107baacf047SPaolo Bonzini int inet_listen_opts(QemuOpts *opts, int port_offset, Error **errp) 108baacf047SPaolo Bonzini { 109baacf047SPaolo Bonzini struct addrinfo ai,*res,*e; 110baacf047SPaolo Bonzini const char *addr; 111baacf047SPaolo Bonzini char port[33]; 112baacf047SPaolo Bonzini char uaddr[INET6_ADDRSTRLEN+1]; 113baacf047SPaolo Bonzini char uport[33]; 114baacf047SPaolo Bonzini int slisten, rc, to, port_min, port_max, p; 115baacf047SPaolo Bonzini 116baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 117baacf047SPaolo Bonzini ai.ai_flags = AI_PASSIVE | AI_ADDRCONFIG; 118baacf047SPaolo Bonzini ai.ai_family = PF_UNSPEC; 119baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 120baacf047SPaolo Bonzini 121baacf047SPaolo Bonzini if ((qemu_opt_get(opts, "host") == NULL) || 122baacf047SPaolo Bonzini (qemu_opt_get(opts, "port") == NULL)) { 123baacf047SPaolo Bonzini error_setg(errp, "host and/or port not specified"); 124baacf047SPaolo Bonzini return -1; 125baacf047SPaolo Bonzini } 126baacf047SPaolo Bonzini pstrcpy(port, sizeof(port), qemu_opt_get(opts, "port")); 127baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "host"); 128baacf047SPaolo Bonzini 129baacf047SPaolo Bonzini to = qemu_opt_get_number(opts, "to", 0); 130baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv4", 0)) 131baacf047SPaolo Bonzini ai.ai_family = PF_INET; 132baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) 133baacf047SPaolo Bonzini ai.ai_family = PF_INET6; 134baacf047SPaolo Bonzini 135baacf047SPaolo Bonzini /* lookup */ 136baacf047SPaolo Bonzini if (port_offset) 137baacf047SPaolo Bonzini snprintf(port, sizeof(port), "%d", atoi(port) + port_offset); 138baacf047SPaolo Bonzini rc = getaddrinfo(strlen(addr) ? addr : NULL, port, &ai, &res); 139baacf047SPaolo Bonzini if (rc != 0) { 140baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 141baacf047SPaolo Bonzini gai_strerror(rc)); 142baacf047SPaolo Bonzini return -1; 143baacf047SPaolo Bonzini } 144baacf047SPaolo Bonzini 145baacf047SPaolo Bonzini /* create socket + bind */ 146baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 147baacf047SPaolo Bonzini getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, 148baacf047SPaolo Bonzini uaddr,INET6_ADDRSTRLEN,uport,32, 149baacf047SPaolo Bonzini NI_NUMERICHOST | NI_NUMERICSERV); 150baacf047SPaolo Bonzini slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); 151baacf047SPaolo Bonzini if (slisten < 0) { 152baacf047SPaolo Bonzini if (!e->ai_next) { 153baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); 154baacf047SPaolo Bonzini } 155baacf047SPaolo Bonzini continue; 156baacf047SPaolo Bonzini } 157baacf047SPaolo Bonzini 158*04fd1c78SSebastian Ottlik socket_set_fast_reuse(slisten); 159baacf047SPaolo Bonzini #ifdef IPV6_V6ONLY 160baacf047SPaolo Bonzini if (e->ai_family == PF_INET6) { 161baacf047SPaolo Bonzini /* listen on both ipv4 and ipv6 */ 1629957fc7fSStefan Weil qemu_setsockopt(slisten, IPPROTO_IPV6, IPV6_V6ONLY, &off, 163baacf047SPaolo Bonzini sizeof(off)); 164baacf047SPaolo Bonzini } 165baacf047SPaolo Bonzini #endif 166baacf047SPaolo Bonzini 167baacf047SPaolo Bonzini port_min = inet_getport(e); 168baacf047SPaolo Bonzini port_max = to ? to + port_offset : port_min; 169baacf047SPaolo Bonzini for (p = port_min; p <= port_max; p++) { 170baacf047SPaolo Bonzini inet_setport(e, p); 171baacf047SPaolo Bonzini if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) { 172baacf047SPaolo Bonzini goto listen; 173baacf047SPaolo Bonzini } 174baacf047SPaolo Bonzini if (p == port_max) { 175baacf047SPaolo Bonzini if (!e->ai_next) { 176baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_BIND_FAILED); 177baacf047SPaolo Bonzini } 178baacf047SPaolo Bonzini } 179baacf047SPaolo Bonzini } 180baacf047SPaolo Bonzini closesocket(slisten); 181baacf047SPaolo Bonzini } 182baacf047SPaolo Bonzini freeaddrinfo(res); 183baacf047SPaolo Bonzini return -1; 184baacf047SPaolo Bonzini 185baacf047SPaolo Bonzini listen: 186baacf047SPaolo Bonzini if (listen(slisten,1) != 0) { 187baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_LISTEN_FAILED); 188baacf047SPaolo Bonzini closesocket(slisten); 189baacf047SPaolo Bonzini freeaddrinfo(res); 190baacf047SPaolo Bonzini return -1; 191baacf047SPaolo Bonzini } 192baacf047SPaolo Bonzini snprintf(uport, sizeof(uport), "%d", inet_getport(e) - port_offset); 193baacf047SPaolo Bonzini qemu_opt_set(opts, "host", uaddr); 194baacf047SPaolo Bonzini qemu_opt_set(opts, "port", uport); 195baacf047SPaolo Bonzini qemu_opt_set(opts, "ipv6", (e->ai_family == PF_INET6) ? "on" : "off"); 196baacf047SPaolo Bonzini qemu_opt_set(opts, "ipv4", (e->ai_family != PF_INET6) ? "on" : "off"); 197baacf047SPaolo Bonzini freeaddrinfo(res); 198baacf047SPaolo Bonzini return slisten; 199baacf047SPaolo Bonzini } 200baacf047SPaolo Bonzini 201baacf047SPaolo Bonzini #ifdef _WIN32 202baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 203baacf047SPaolo Bonzini ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) 204baacf047SPaolo Bonzini #else 205baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 206baacf047SPaolo Bonzini ((rc) == -EINPROGRESS) 207baacf047SPaolo Bonzini #endif 208baacf047SPaolo Bonzini 209baacf047SPaolo Bonzini /* Struct to store connect state for non blocking connect */ 210baacf047SPaolo Bonzini typedef struct ConnectState { 211baacf047SPaolo Bonzini int fd; 212baacf047SPaolo Bonzini struct addrinfo *addr_list; 213baacf047SPaolo Bonzini struct addrinfo *current_addr; 214baacf047SPaolo Bonzini NonBlockingConnectHandler *callback; 215baacf047SPaolo Bonzini void *opaque; 216baacf047SPaolo Bonzini } ConnectState; 217baacf047SPaolo Bonzini 218baacf047SPaolo Bonzini static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, 219baacf047SPaolo Bonzini ConnectState *connect_state, Error **errp); 220baacf047SPaolo Bonzini 221baacf047SPaolo Bonzini static void wait_for_connect(void *opaque) 222baacf047SPaolo Bonzini { 223baacf047SPaolo Bonzini ConnectState *s = opaque; 224baacf047SPaolo Bonzini int val = 0, rc = 0; 225baacf047SPaolo Bonzini socklen_t valsize = sizeof(val); 226baacf047SPaolo Bonzini bool in_progress; 227baacf047SPaolo Bonzini 228baacf047SPaolo Bonzini qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL); 229baacf047SPaolo Bonzini 230baacf047SPaolo Bonzini do { 2319957fc7fSStefan Weil rc = qemu_getsockopt(s->fd, SOL_SOCKET, SO_ERROR, &val, &valsize); 232baacf047SPaolo Bonzini } while (rc == -1 && socket_error() == EINTR); 233baacf047SPaolo Bonzini 234baacf047SPaolo Bonzini /* update rc to contain error */ 235baacf047SPaolo Bonzini if (!rc && val) { 236baacf047SPaolo Bonzini rc = -1; 237baacf047SPaolo Bonzini } 238baacf047SPaolo Bonzini 239baacf047SPaolo Bonzini /* connect error */ 240baacf047SPaolo Bonzini if (rc < 0) { 241baacf047SPaolo Bonzini closesocket(s->fd); 242baacf047SPaolo Bonzini s->fd = rc; 243baacf047SPaolo Bonzini } 244baacf047SPaolo Bonzini 245baacf047SPaolo Bonzini /* try to connect to the next address on the list */ 246baacf047SPaolo Bonzini if (s->current_addr) { 247baacf047SPaolo Bonzini while (s->current_addr->ai_next != NULL && s->fd < 0) { 248baacf047SPaolo Bonzini s->current_addr = s->current_addr->ai_next; 249baacf047SPaolo Bonzini s->fd = inet_connect_addr(s->current_addr, &in_progress, s, NULL); 250baacf047SPaolo Bonzini /* connect in progress */ 251baacf047SPaolo Bonzini if (in_progress) { 252baacf047SPaolo Bonzini return; 253baacf047SPaolo Bonzini } 254baacf047SPaolo Bonzini } 255baacf047SPaolo Bonzini 256baacf047SPaolo Bonzini freeaddrinfo(s->addr_list); 257baacf047SPaolo Bonzini } 258baacf047SPaolo Bonzini 259baacf047SPaolo Bonzini if (s->callback) { 260baacf047SPaolo Bonzini s->callback(s->fd, s->opaque); 261baacf047SPaolo Bonzini } 262baacf047SPaolo Bonzini g_free(s); 263baacf047SPaolo Bonzini } 264baacf047SPaolo Bonzini 265baacf047SPaolo Bonzini static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, 266baacf047SPaolo Bonzini ConnectState *connect_state, Error **errp) 267baacf047SPaolo Bonzini { 268baacf047SPaolo Bonzini int sock, rc; 269baacf047SPaolo Bonzini 270baacf047SPaolo Bonzini *in_progress = false; 271baacf047SPaolo Bonzini 272baacf047SPaolo Bonzini sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); 273baacf047SPaolo Bonzini if (sock < 0) { 274baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); 275baacf047SPaolo Bonzini return -1; 276baacf047SPaolo Bonzini } 277*04fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 278baacf047SPaolo Bonzini if (connect_state != NULL) { 279f9e8caccSStefan Hajnoczi qemu_set_nonblock(sock); 280baacf047SPaolo Bonzini } 281baacf047SPaolo Bonzini /* connect to peer */ 282baacf047SPaolo Bonzini do { 283baacf047SPaolo Bonzini rc = 0; 284baacf047SPaolo Bonzini if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { 285baacf047SPaolo Bonzini rc = -socket_error(); 286baacf047SPaolo Bonzini } 287baacf047SPaolo Bonzini } while (rc == -EINTR); 288baacf047SPaolo Bonzini 289baacf047SPaolo Bonzini if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { 290baacf047SPaolo Bonzini connect_state->fd = sock; 291baacf047SPaolo Bonzini qemu_set_fd_handler2(sock, NULL, NULL, wait_for_connect, 292baacf047SPaolo Bonzini connect_state); 293baacf047SPaolo Bonzini *in_progress = true; 294baacf047SPaolo Bonzini } else if (rc < 0) { 295baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CONNECT_FAILED); 296baacf047SPaolo Bonzini closesocket(sock); 297baacf047SPaolo Bonzini return -1; 298baacf047SPaolo Bonzini } 299baacf047SPaolo Bonzini return sock; 300baacf047SPaolo Bonzini } 301baacf047SPaolo Bonzini 302baacf047SPaolo Bonzini static struct addrinfo *inet_parse_connect_opts(QemuOpts *opts, Error **errp) 303baacf047SPaolo Bonzini { 304baacf047SPaolo Bonzini struct addrinfo ai, *res; 305baacf047SPaolo Bonzini int rc; 306baacf047SPaolo Bonzini const char *addr; 307baacf047SPaolo Bonzini const char *port; 308baacf047SPaolo Bonzini 309baacf047SPaolo Bonzini memset(&ai, 0, sizeof(ai)); 310baacf047SPaolo Bonzini 311baacf047SPaolo Bonzini ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; 312baacf047SPaolo Bonzini ai.ai_family = PF_UNSPEC; 313baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 314baacf047SPaolo Bonzini 315baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "host"); 316baacf047SPaolo Bonzini port = qemu_opt_get(opts, "port"); 317baacf047SPaolo Bonzini if (addr == NULL || port == NULL) { 318baacf047SPaolo Bonzini error_setg(errp, "host and/or port not specified"); 319baacf047SPaolo Bonzini return NULL; 320baacf047SPaolo Bonzini } 321baacf047SPaolo Bonzini 322baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv4", 0)) { 323baacf047SPaolo Bonzini ai.ai_family = PF_INET; 324baacf047SPaolo Bonzini } 325baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) { 326baacf047SPaolo Bonzini ai.ai_family = PF_INET6; 327baacf047SPaolo Bonzini } 328baacf047SPaolo Bonzini 329baacf047SPaolo Bonzini /* lookup */ 330baacf047SPaolo Bonzini rc = getaddrinfo(addr, port, &ai, &res); 331baacf047SPaolo Bonzini if (rc != 0) { 332baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 333baacf047SPaolo Bonzini gai_strerror(rc)); 334baacf047SPaolo Bonzini return NULL; 335baacf047SPaolo Bonzini } 336baacf047SPaolo Bonzini return res; 337baacf047SPaolo Bonzini } 338baacf047SPaolo Bonzini 339baacf047SPaolo Bonzini /** 340baacf047SPaolo Bonzini * Create a socket and connect it to an address. 341baacf047SPaolo Bonzini * 342baacf047SPaolo Bonzini * @opts: QEMU options, recognized parameters strings "host" and "port", 343baacf047SPaolo Bonzini * bools "ipv4" and "ipv6". 344baacf047SPaolo Bonzini * @errp: set on error 345baacf047SPaolo Bonzini * @callback: callback function for non-blocking connect 346baacf047SPaolo Bonzini * @opaque: opaque for callback function 347baacf047SPaolo Bonzini * 348baacf047SPaolo Bonzini * Returns: -1 on error, file descriptor on success. 349baacf047SPaolo Bonzini * 350baacf047SPaolo Bonzini * If @callback is non-null, the connect is non-blocking. If this 351baacf047SPaolo Bonzini * function succeeds, callback will be called when the connection 352baacf047SPaolo Bonzini * completes, with the file descriptor on success, or -1 on error. 353baacf047SPaolo Bonzini */ 354baacf047SPaolo Bonzini int inet_connect_opts(QemuOpts *opts, Error **errp, 355baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 356baacf047SPaolo Bonzini { 357baacf047SPaolo Bonzini struct addrinfo *res, *e; 358baacf047SPaolo Bonzini int sock = -1; 359baacf047SPaolo Bonzini bool in_progress; 360baacf047SPaolo Bonzini ConnectState *connect_state = NULL; 361baacf047SPaolo Bonzini 362baacf047SPaolo Bonzini res = inet_parse_connect_opts(opts, errp); 363baacf047SPaolo Bonzini if (!res) { 364baacf047SPaolo Bonzini return -1; 365baacf047SPaolo Bonzini } 366baacf047SPaolo Bonzini 367baacf047SPaolo Bonzini if (callback != NULL) { 368baacf047SPaolo Bonzini connect_state = g_malloc0(sizeof(*connect_state)); 369baacf047SPaolo Bonzini connect_state->addr_list = res; 370baacf047SPaolo Bonzini connect_state->callback = callback; 371baacf047SPaolo Bonzini connect_state->opaque = opaque; 372baacf047SPaolo Bonzini } 373baacf047SPaolo Bonzini 374baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 375baca6f18SAnthony Liguori if (error_is_set(errp)) { 376baca6f18SAnthony Liguori error_free(*errp); 377baca6f18SAnthony Liguori *errp = NULL; 378baca6f18SAnthony Liguori } 379baacf047SPaolo Bonzini if (connect_state != NULL) { 380baacf047SPaolo Bonzini connect_state->current_addr = e; 381baacf047SPaolo Bonzini } 382baacf047SPaolo Bonzini sock = inet_connect_addr(e, &in_progress, connect_state, errp); 383baacf047SPaolo Bonzini if (in_progress) { 384baacf047SPaolo Bonzini return sock; 385baacf047SPaolo Bonzini } else if (sock >= 0) { 386baacf047SPaolo Bonzini /* non blocking socket immediate success, call callback */ 387baacf047SPaolo Bonzini if (callback != NULL) { 388baacf047SPaolo Bonzini callback(sock, opaque); 389baacf047SPaolo Bonzini } 390baacf047SPaolo Bonzini break; 391baacf047SPaolo Bonzini } 392baacf047SPaolo Bonzini } 393baacf047SPaolo Bonzini g_free(connect_state); 394baacf047SPaolo Bonzini freeaddrinfo(res); 395baacf047SPaolo Bonzini return sock; 396baacf047SPaolo Bonzini } 397baacf047SPaolo Bonzini 398baacf047SPaolo Bonzini int inet_dgram_opts(QemuOpts *opts, Error **errp) 399baacf047SPaolo Bonzini { 400baacf047SPaolo Bonzini struct addrinfo ai, *peer = NULL, *local = NULL; 401baacf047SPaolo Bonzini const char *addr; 402baacf047SPaolo Bonzini const char *port; 403baacf047SPaolo Bonzini int sock = -1, rc; 404baacf047SPaolo Bonzini 405baacf047SPaolo Bonzini /* lookup peer addr */ 406baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 407baacf047SPaolo Bonzini ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; 408baacf047SPaolo Bonzini ai.ai_family = PF_UNSPEC; 409baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 410baacf047SPaolo Bonzini 411baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "host"); 412baacf047SPaolo Bonzini port = qemu_opt_get(opts, "port"); 413baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 414baacf047SPaolo Bonzini addr = "localhost"; 415baacf047SPaolo Bonzini } 416baacf047SPaolo Bonzini if (port == NULL || strlen(port) == 0) { 417baacf047SPaolo Bonzini error_setg(errp, "remote port not specified"); 418baacf047SPaolo Bonzini return -1; 419baacf047SPaolo Bonzini } 420baacf047SPaolo Bonzini 421baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv4", 0)) 422baacf047SPaolo Bonzini ai.ai_family = PF_INET; 423baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) 424baacf047SPaolo Bonzini ai.ai_family = PF_INET6; 425baacf047SPaolo Bonzini 426baacf047SPaolo Bonzini if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) { 427baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 428baacf047SPaolo Bonzini gai_strerror(rc)); 429baacf047SPaolo Bonzini return -1; 430baacf047SPaolo Bonzini } 431baacf047SPaolo Bonzini 432baacf047SPaolo Bonzini /* lookup local addr */ 433baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 434baacf047SPaolo Bonzini ai.ai_flags = AI_PASSIVE; 435baacf047SPaolo Bonzini ai.ai_family = peer->ai_family; 436baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 437baacf047SPaolo Bonzini 438baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "localaddr"); 439baacf047SPaolo Bonzini port = qemu_opt_get(opts, "localport"); 440baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 441baacf047SPaolo Bonzini addr = NULL; 442baacf047SPaolo Bonzini } 443baacf047SPaolo Bonzini if (!port || strlen(port) == 0) 444baacf047SPaolo Bonzini port = "0"; 445baacf047SPaolo Bonzini 446baacf047SPaolo Bonzini if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) { 447baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 448baacf047SPaolo Bonzini gai_strerror(rc)); 449baacf047SPaolo Bonzini goto err; 450baacf047SPaolo Bonzini } 451baacf047SPaolo Bonzini 452baacf047SPaolo Bonzini /* create socket */ 453baacf047SPaolo Bonzini sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); 454baacf047SPaolo Bonzini if (sock < 0) { 455baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); 456baacf047SPaolo Bonzini goto err; 457baacf047SPaolo Bonzini } 458*04fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 459baacf047SPaolo Bonzini 460baacf047SPaolo Bonzini /* bind socket */ 461baacf047SPaolo Bonzini if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { 462baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_BIND_FAILED); 463baacf047SPaolo Bonzini goto err; 464baacf047SPaolo Bonzini } 465baacf047SPaolo Bonzini 466baacf047SPaolo Bonzini /* connect to peer */ 467baacf047SPaolo Bonzini if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { 468baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CONNECT_FAILED); 469baacf047SPaolo Bonzini goto err; 470baacf047SPaolo Bonzini } 471baacf047SPaolo Bonzini 472baacf047SPaolo Bonzini freeaddrinfo(local); 473baacf047SPaolo Bonzini freeaddrinfo(peer); 474baacf047SPaolo Bonzini return sock; 475baacf047SPaolo Bonzini 476baacf047SPaolo Bonzini err: 477baacf047SPaolo Bonzini if (-1 != sock) 478baacf047SPaolo Bonzini closesocket(sock); 479baacf047SPaolo Bonzini if (local) 480baacf047SPaolo Bonzini freeaddrinfo(local); 481baacf047SPaolo Bonzini if (peer) 482baacf047SPaolo Bonzini freeaddrinfo(peer); 483baacf047SPaolo Bonzini return -1; 484baacf047SPaolo Bonzini } 485baacf047SPaolo Bonzini 486baacf047SPaolo Bonzini /* compatibility wrapper */ 487f17c90beSKevin Wolf InetSocketAddress *inet_parse(const char *str, Error **errp) 488baacf047SPaolo Bonzini { 489baacf047SPaolo Bonzini InetSocketAddress *addr; 490baacf047SPaolo Bonzini const char *optstr, *h; 491baacf047SPaolo Bonzini char host[64]; 492baacf047SPaolo Bonzini char port[33]; 493baacf047SPaolo Bonzini int to; 494baacf047SPaolo Bonzini int pos; 495baacf047SPaolo Bonzini 496baacf047SPaolo Bonzini addr = g_new0(InetSocketAddress, 1); 497baacf047SPaolo Bonzini 498baacf047SPaolo Bonzini /* parse address */ 499baacf047SPaolo Bonzini if (str[0] == ':') { 500baacf047SPaolo Bonzini /* no host given */ 501baacf047SPaolo Bonzini host[0] = '\0'; 502baacf047SPaolo Bonzini if (1 != sscanf(str, ":%32[^,]%n", port, &pos)) { 503baacf047SPaolo Bonzini error_setg(errp, "error parsing port in address '%s'", str); 504baacf047SPaolo Bonzini goto fail; 505baacf047SPaolo Bonzini } 506baacf047SPaolo Bonzini } else if (str[0] == '[') { 507baacf047SPaolo Bonzini /* IPv6 addr */ 508baacf047SPaolo Bonzini if (2 != sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos)) { 509baacf047SPaolo Bonzini error_setg(errp, "error parsing IPv6 address '%s'", str); 510baacf047SPaolo Bonzini goto fail; 511baacf047SPaolo Bonzini } 512baacf047SPaolo Bonzini addr->ipv6 = addr->has_ipv6 = true; 513baacf047SPaolo Bonzini } else { 514391b7b97SJán Tomko /* hostname or IPv4 addr */ 515baacf047SPaolo Bonzini if (2 != sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos)) { 516baacf047SPaolo Bonzini error_setg(errp, "error parsing address '%s'", str); 517baacf047SPaolo Bonzini goto fail; 518baacf047SPaolo Bonzini } 519391b7b97SJán Tomko if (host[strspn(host, "0123456789.")] == '\0') { 520391b7b97SJán Tomko addr->ipv4 = addr->has_ipv4 = true; 521391b7b97SJán Tomko } 522baacf047SPaolo Bonzini } 523baacf047SPaolo Bonzini 524baacf047SPaolo Bonzini addr->host = g_strdup(host); 525baacf047SPaolo Bonzini addr->port = g_strdup(port); 526baacf047SPaolo Bonzini 527baacf047SPaolo Bonzini /* parse options */ 528baacf047SPaolo Bonzini optstr = str + pos; 529baacf047SPaolo Bonzini h = strstr(optstr, ",to="); 530baacf047SPaolo Bonzini if (h) { 531baacf047SPaolo Bonzini h += 4; 532baacf047SPaolo Bonzini if (sscanf(h, "%d%n", &to, &pos) != 1 || 533baacf047SPaolo Bonzini (h[pos] != '\0' && h[pos] != ',')) { 534baacf047SPaolo Bonzini error_setg(errp, "error parsing to= argument"); 535baacf047SPaolo Bonzini goto fail; 536baacf047SPaolo Bonzini } 537baacf047SPaolo Bonzini addr->has_to = true; 538baacf047SPaolo Bonzini addr->to = to; 539baacf047SPaolo Bonzini } 540baacf047SPaolo Bonzini if (strstr(optstr, ",ipv4")) { 541baacf047SPaolo Bonzini addr->ipv4 = addr->has_ipv4 = true; 542baacf047SPaolo Bonzini } 543baacf047SPaolo Bonzini if (strstr(optstr, ",ipv6")) { 544baacf047SPaolo Bonzini addr->ipv6 = addr->has_ipv6 = true; 545baacf047SPaolo Bonzini } 546baacf047SPaolo Bonzini return addr; 547baacf047SPaolo Bonzini 548baacf047SPaolo Bonzini fail: 549baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 550baacf047SPaolo Bonzini return NULL; 551baacf047SPaolo Bonzini } 552baacf047SPaolo Bonzini 553f17c90beSKevin Wolf static void inet_addr_to_opts(QemuOpts *opts, const InetSocketAddress *addr) 554baacf047SPaolo Bonzini { 555baacf047SPaolo Bonzini bool ipv4 = addr->ipv4 || !addr->has_ipv4; 556baacf047SPaolo Bonzini bool ipv6 = addr->ipv6 || !addr->has_ipv6; 557baacf047SPaolo Bonzini 558baacf047SPaolo Bonzini if (!ipv4 || !ipv6) { 559baacf047SPaolo Bonzini qemu_opt_set_bool(opts, "ipv4", ipv4); 560baacf047SPaolo Bonzini qemu_opt_set_bool(opts, "ipv6", ipv6); 561baacf047SPaolo Bonzini } 562baacf047SPaolo Bonzini if (addr->has_to) { 563baacf047SPaolo Bonzini char to[20]; 564baacf047SPaolo Bonzini snprintf(to, sizeof(to), "%d", addr->to); 565baacf047SPaolo Bonzini qemu_opt_set(opts, "to", to); 566baacf047SPaolo Bonzini } 567baacf047SPaolo Bonzini qemu_opt_set(opts, "host", addr->host); 568baacf047SPaolo Bonzini qemu_opt_set(opts, "port", addr->port); 569baacf047SPaolo Bonzini } 570baacf047SPaolo Bonzini 571baacf047SPaolo Bonzini int inet_listen(const char *str, char *ostr, int olen, 572baacf047SPaolo Bonzini int socktype, int port_offset, Error **errp) 573baacf047SPaolo Bonzini { 574baacf047SPaolo Bonzini QemuOpts *opts; 575baacf047SPaolo Bonzini char *optstr; 576baacf047SPaolo Bonzini int sock = -1; 577baacf047SPaolo Bonzini InetSocketAddress *addr; 578baacf047SPaolo Bonzini 579baacf047SPaolo Bonzini addr = inet_parse(str, errp); 580baacf047SPaolo Bonzini if (addr != NULL) { 581e62be888SKevin Wolf opts = qemu_opts_create_nofail(&socket_optslist); 582baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr); 583baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 584baacf047SPaolo Bonzini sock = inet_listen_opts(opts, port_offset, errp); 585baacf047SPaolo Bonzini if (sock != -1 && ostr) { 586baacf047SPaolo Bonzini optstr = strchr(str, ','); 587baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) { 588baacf047SPaolo Bonzini snprintf(ostr, olen, "[%s]:%s%s", 589baacf047SPaolo Bonzini qemu_opt_get(opts, "host"), 590baacf047SPaolo Bonzini qemu_opt_get(opts, "port"), 591baacf047SPaolo Bonzini optstr ? optstr : ""); 592baacf047SPaolo Bonzini } else { 593baacf047SPaolo Bonzini snprintf(ostr, olen, "%s:%s%s", 594baacf047SPaolo Bonzini qemu_opt_get(opts, "host"), 595baacf047SPaolo Bonzini qemu_opt_get(opts, "port"), 596baacf047SPaolo Bonzini optstr ? optstr : ""); 597baacf047SPaolo Bonzini } 598baacf047SPaolo Bonzini } 599baacf047SPaolo Bonzini qemu_opts_del(opts); 600baacf047SPaolo Bonzini } 601baacf047SPaolo Bonzini return sock; 602baacf047SPaolo Bonzini } 603baacf047SPaolo Bonzini 604baacf047SPaolo Bonzini /** 605baacf047SPaolo Bonzini * Create a blocking socket and connect it to an address. 606baacf047SPaolo Bonzini * 607baacf047SPaolo Bonzini * @str: address string 608baacf047SPaolo Bonzini * @errp: set in case of an error 609baacf047SPaolo Bonzini * 610baacf047SPaolo Bonzini * Returns -1 in case of error, file descriptor on success 611baacf047SPaolo Bonzini **/ 612baacf047SPaolo Bonzini int inet_connect(const char *str, Error **errp) 613baacf047SPaolo Bonzini { 614baacf047SPaolo Bonzini QemuOpts *opts; 615baacf047SPaolo Bonzini int sock = -1; 616baacf047SPaolo Bonzini InetSocketAddress *addr; 617baacf047SPaolo Bonzini 618baacf047SPaolo Bonzini addr = inet_parse(str, errp); 619baacf047SPaolo Bonzini if (addr != NULL) { 620f17c90beSKevin Wolf opts = qemu_opts_create_nofail(&socket_optslist); 621baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr); 622baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 623baacf047SPaolo Bonzini sock = inet_connect_opts(opts, errp, NULL, NULL); 624baacf047SPaolo Bonzini qemu_opts_del(opts); 625baacf047SPaolo Bonzini } 626baacf047SPaolo Bonzini return sock; 627baacf047SPaolo Bonzini } 628baacf047SPaolo Bonzini 629baacf047SPaolo Bonzini /** 630baacf047SPaolo Bonzini * Create a non-blocking socket and connect it to an address. 631baacf047SPaolo Bonzini * Calls the callback function with fd in case of success or -1 in case of 632baacf047SPaolo Bonzini * error. 633baacf047SPaolo Bonzini * 634baacf047SPaolo Bonzini * @str: address string 635baacf047SPaolo Bonzini * @callback: callback function that is called when connect completes, 636baacf047SPaolo Bonzini * cannot be NULL. 637baacf047SPaolo Bonzini * @opaque: opaque for callback function 638baacf047SPaolo Bonzini * @errp: set in case of an error 639baacf047SPaolo Bonzini * 640baacf047SPaolo Bonzini * Returns: -1 on immediate error, file descriptor on success. 641baacf047SPaolo Bonzini **/ 642baacf047SPaolo Bonzini int inet_nonblocking_connect(const char *str, 643baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, 644baacf047SPaolo Bonzini void *opaque, Error **errp) 645baacf047SPaolo Bonzini { 646baacf047SPaolo Bonzini QemuOpts *opts; 647baacf047SPaolo Bonzini int sock = -1; 648baacf047SPaolo Bonzini InetSocketAddress *addr; 649baacf047SPaolo Bonzini 650baacf047SPaolo Bonzini g_assert(callback != NULL); 651baacf047SPaolo Bonzini 652baacf047SPaolo Bonzini addr = inet_parse(str, errp); 653baacf047SPaolo Bonzini if (addr != NULL) { 654e62be888SKevin Wolf opts = qemu_opts_create_nofail(&socket_optslist); 655baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr); 656baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 657baacf047SPaolo Bonzini sock = inet_connect_opts(opts, errp, callback, opaque); 658baacf047SPaolo Bonzini qemu_opts_del(opts); 659baacf047SPaolo Bonzini } 660baacf047SPaolo Bonzini return sock; 661baacf047SPaolo Bonzini } 662baacf047SPaolo Bonzini 663baacf047SPaolo Bonzini #ifndef _WIN32 664baacf047SPaolo Bonzini 665baacf047SPaolo Bonzini int unix_listen_opts(QemuOpts *opts, Error **errp) 666baacf047SPaolo Bonzini { 667baacf047SPaolo Bonzini struct sockaddr_un un; 668baacf047SPaolo Bonzini const char *path = qemu_opt_get(opts, "path"); 669baacf047SPaolo Bonzini int sock, fd; 670baacf047SPaolo Bonzini 671baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 672baacf047SPaolo Bonzini if (sock < 0) { 673baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); 674baacf047SPaolo Bonzini return -1; 675baacf047SPaolo Bonzini } 676baacf047SPaolo Bonzini 677baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 678baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 679baacf047SPaolo Bonzini if (path && strlen(path)) { 680baacf047SPaolo Bonzini snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); 681baacf047SPaolo Bonzini } else { 682baacf047SPaolo Bonzini char *tmpdir = getenv("TMPDIR"); 683baacf047SPaolo Bonzini snprintf(un.sun_path, sizeof(un.sun_path), "%s/qemu-socket-XXXXXX", 684baacf047SPaolo Bonzini tmpdir ? tmpdir : "/tmp"); 685baacf047SPaolo Bonzini /* 686baacf047SPaolo Bonzini * This dummy fd usage silences the mktemp() unsecure warning. 687baacf047SPaolo Bonzini * Using mkstemp() doesn't make things more secure here 688baacf047SPaolo Bonzini * though. bind() complains about existing files, so we have 689baacf047SPaolo Bonzini * to unlink first and thus re-open the race window. The 690baacf047SPaolo Bonzini * worst case possible is bind() failing, i.e. a DoS attack. 691baacf047SPaolo Bonzini */ 692baacf047SPaolo Bonzini fd = mkstemp(un.sun_path); close(fd); 693baacf047SPaolo Bonzini qemu_opt_set(opts, "path", un.sun_path); 694baacf047SPaolo Bonzini } 695baacf047SPaolo Bonzini 696baacf047SPaolo Bonzini unlink(un.sun_path); 697baacf047SPaolo Bonzini if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { 698baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_BIND_FAILED); 699baacf047SPaolo Bonzini goto err; 700baacf047SPaolo Bonzini } 701baacf047SPaolo Bonzini if (listen(sock, 1) < 0) { 702baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_LISTEN_FAILED); 703baacf047SPaolo Bonzini goto err; 704baacf047SPaolo Bonzini } 705baacf047SPaolo Bonzini 706baacf047SPaolo Bonzini return sock; 707baacf047SPaolo Bonzini 708baacf047SPaolo Bonzini err: 709baacf047SPaolo Bonzini closesocket(sock); 710baacf047SPaolo Bonzini return -1; 711baacf047SPaolo Bonzini } 712baacf047SPaolo Bonzini 713baacf047SPaolo Bonzini int unix_connect_opts(QemuOpts *opts, Error **errp, 714baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 715baacf047SPaolo Bonzini { 716baacf047SPaolo Bonzini struct sockaddr_un un; 717baacf047SPaolo Bonzini const char *path = qemu_opt_get(opts, "path"); 718baacf047SPaolo Bonzini ConnectState *connect_state = NULL; 719baacf047SPaolo Bonzini int sock, rc; 720baacf047SPaolo Bonzini 721baacf047SPaolo Bonzini if (NULL == path) { 722312fd5f2SMarkus Armbruster error_setg(errp, "unix connect: no path specified"); 723baacf047SPaolo Bonzini return -1; 724baacf047SPaolo Bonzini } 725baacf047SPaolo Bonzini 726baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 727baacf047SPaolo Bonzini if (sock < 0) { 728baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); 729baacf047SPaolo Bonzini return -1; 730baacf047SPaolo Bonzini } 731baacf047SPaolo Bonzini if (callback != NULL) { 732baacf047SPaolo Bonzini connect_state = g_malloc0(sizeof(*connect_state)); 733baacf047SPaolo Bonzini connect_state->callback = callback; 734baacf047SPaolo Bonzini connect_state->opaque = opaque; 735f9e8caccSStefan Hajnoczi qemu_set_nonblock(sock); 736baacf047SPaolo Bonzini } 737baacf047SPaolo Bonzini 738baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 739baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 740baacf047SPaolo Bonzini snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); 741baacf047SPaolo Bonzini 742baacf047SPaolo Bonzini /* connect to peer */ 743baacf047SPaolo Bonzini do { 744baacf047SPaolo Bonzini rc = 0; 745baacf047SPaolo Bonzini if (connect(sock, (struct sockaddr *) &un, sizeof(un)) < 0) { 746baacf047SPaolo Bonzini rc = -socket_error(); 747baacf047SPaolo Bonzini } 748baacf047SPaolo Bonzini } while (rc == -EINTR); 749baacf047SPaolo Bonzini 750baacf047SPaolo Bonzini if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { 751baacf047SPaolo Bonzini connect_state->fd = sock; 752baacf047SPaolo Bonzini qemu_set_fd_handler2(sock, NULL, NULL, wait_for_connect, 753baacf047SPaolo Bonzini connect_state); 754baacf047SPaolo Bonzini return sock; 755baacf047SPaolo Bonzini } else if (rc >= 0) { 756baacf047SPaolo Bonzini /* non blocking socket immediate success, call callback */ 757baacf047SPaolo Bonzini if (callback != NULL) { 758baacf047SPaolo Bonzini callback(sock, opaque); 759baacf047SPaolo Bonzini } 760baacf047SPaolo Bonzini } 761baacf047SPaolo Bonzini 762baacf047SPaolo Bonzini if (rc < 0) { 763baacf047SPaolo Bonzini error_set_errno(errp, -rc, QERR_SOCKET_CONNECT_FAILED); 764baacf047SPaolo Bonzini close(sock); 765baacf047SPaolo Bonzini sock = -1; 766baacf047SPaolo Bonzini } 767baacf047SPaolo Bonzini 768baacf047SPaolo Bonzini g_free(connect_state); 769baacf047SPaolo Bonzini return sock; 770baacf047SPaolo Bonzini } 771baacf047SPaolo Bonzini 772baacf047SPaolo Bonzini #else 773baacf047SPaolo Bonzini 774baacf047SPaolo Bonzini int unix_listen_opts(QemuOpts *opts, Error **errp) 775baacf047SPaolo Bonzini { 776baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 777baacf047SPaolo Bonzini errno = ENOTSUP; 778baacf047SPaolo Bonzini return -1; 779baacf047SPaolo Bonzini } 780baacf047SPaolo Bonzini 781baacf047SPaolo Bonzini int unix_connect_opts(QemuOpts *opts, Error **errp, 782baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 783baacf047SPaolo Bonzini { 784baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 785baacf047SPaolo Bonzini errno = ENOTSUP; 786baacf047SPaolo Bonzini return -1; 787baacf047SPaolo Bonzini } 788baacf047SPaolo Bonzini #endif 789baacf047SPaolo Bonzini 790baacf047SPaolo Bonzini /* compatibility wrapper */ 791baacf047SPaolo Bonzini int unix_listen(const char *str, char *ostr, int olen, Error **errp) 792baacf047SPaolo Bonzini { 793baacf047SPaolo Bonzini QemuOpts *opts; 794baacf047SPaolo Bonzini char *path, *optstr; 795baacf047SPaolo Bonzini int sock, len; 796baacf047SPaolo Bonzini 797e62be888SKevin Wolf opts = qemu_opts_create_nofail(&socket_optslist); 798baacf047SPaolo Bonzini 799baacf047SPaolo Bonzini optstr = strchr(str, ','); 800baacf047SPaolo Bonzini if (optstr) { 801baacf047SPaolo Bonzini len = optstr - str; 802baacf047SPaolo Bonzini if (len) { 803baacf047SPaolo Bonzini path = g_malloc(len+1); 804baacf047SPaolo Bonzini snprintf(path, len+1, "%.*s", len, str); 805baacf047SPaolo Bonzini qemu_opt_set(opts, "path", path); 806baacf047SPaolo Bonzini g_free(path); 807baacf047SPaolo Bonzini } 808baacf047SPaolo Bonzini } else { 809baacf047SPaolo Bonzini qemu_opt_set(opts, "path", str); 810baacf047SPaolo Bonzini } 811baacf047SPaolo Bonzini 812baacf047SPaolo Bonzini sock = unix_listen_opts(opts, errp); 813baacf047SPaolo Bonzini 814baacf047SPaolo Bonzini if (sock != -1 && ostr) 815baacf047SPaolo Bonzini snprintf(ostr, olen, "%s%s", qemu_opt_get(opts, "path"), optstr ? optstr : ""); 816baacf047SPaolo Bonzini qemu_opts_del(opts); 817baacf047SPaolo Bonzini return sock; 818baacf047SPaolo Bonzini } 819baacf047SPaolo Bonzini 820baacf047SPaolo Bonzini int unix_connect(const char *path, Error **errp) 821baacf047SPaolo Bonzini { 822baacf047SPaolo Bonzini QemuOpts *opts; 823baacf047SPaolo Bonzini int sock; 824baacf047SPaolo Bonzini 825e62be888SKevin Wolf opts = qemu_opts_create_nofail(&socket_optslist); 826baacf047SPaolo Bonzini qemu_opt_set(opts, "path", path); 827baacf047SPaolo Bonzini sock = unix_connect_opts(opts, errp, NULL, NULL); 828baacf047SPaolo Bonzini qemu_opts_del(opts); 829baacf047SPaolo Bonzini return sock; 830baacf047SPaolo Bonzini } 831baacf047SPaolo Bonzini 832baacf047SPaolo Bonzini 833baacf047SPaolo Bonzini int unix_nonblocking_connect(const char *path, 834baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, 835baacf047SPaolo Bonzini void *opaque, Error **errp) 836baacf047SPaolo Bonzini { 837baacf047SPaolo Bonzini QemuOpts *opts; 838baacf047SPaolo Bonzini int sock = -1; 839baacf047SPaolo Bonzini 840baacf047SPaolo Bonzini g_assert(callback != NULL); 841baacf047SPaolo Bonzini 842e62be888SKevin Wolf opts = qemu_opts_create_nofail(&socket_optslist); 843baacf047SPaolo Bonzini qemu_opt_set(opts, "path", path); 844baacf047SPaolo Bonzini sock = unix_connect_opts(opts, errp, callback, opaque); 845baacf047SPaolo Bonzini qemu_opts_del(opts); 846baacf047SPaolo Bonzini return sock; 847baacf047SPaolo Bonzini } 848baacf047SPaolo Bonzini 849baacf047SPaolo Bonzini SocketAddress *socket_parse(const char *str, Error **errp) 850baacf047SPaolo Bonzini { 851afde3f8bSGerd Hoffmann SocketAddress *addr; 852baacf047SPaolo Bonzini 853afde3f8bSGerd Hoffmann addr = g_new0(SocketAddress, 1); 854baacf047SPaolo Bonzini if (strstart(str, "unix:", NULL)) { 855baacf047SPaolo Bonzini if (str[5] == '\0') { 856312fd5f2SMarkus Armbruster error_setg(errp, "invalid Unix socket address"); 857baacf047SPaolo Bonzini goto fail; 858baacf047SPaolo Bonzini } else { 859baacf047SPaolo Bonzini addr->kind = SOCKET_ADDRESS_KIND_UNIX; 860baacf047SPaolo Bonzini addr->q_unix = g_new(UnixSocketAddress, 1); 861baacf047SPaolo Bonzini addr->q_unix->path = g_strdup(str + 5); 862baacf047SPaolo Bonzini } 863baacf047SPaolo Bonzini } else if (strstart(str, "fd:", NULL)) { 864baacf047SPaolo Bonzini if (str[3] == '\0') { 865312fd5f2SMarkus Armbruster error_setg(errp, "invalid file descriptor address"); 866baacf047SPaolo Bonzini goto fail; 867baacf047SPaolo Bonzini } else { 868baacf047SPaolo Bonzini addr->kind = SOCKET_ADDRESS_KIND_FD; 869baacf047SPaolo Bonzini addr->fd = g_new(String, 1); 870baacf047SPaolo Bonzini addr->fd->str = g_strdup(str + 3); 871baacf047SPaolo Bonzini } 872baacf047SPaolo Bonzini } else { 873baacf047SPaolo Bonzini addr->kind = SOCKET_ADDRESS_KIND_INET; 874baacf047SPaolo Bonzini addr->inet = inet_parse(str, errp); 875baacf047SPaolo Bonzini if (addr->inet == NULL) { 876baacf047SPaolo Bonzini goto fail; 877baacf047SPaolo Bonzini } 878baacf047SPaolo Bonzini } 879baacf047SPaolo Bonzini return addr; 880baacf047SPaolo Bonzini 881baacf047SPaolo Bonzini fail: 882baacf047SPaolo Bonzini qapi_free_SocketAddress(addr); 883baacf047SPaolo Bonzini return NULL; 884baacf047SPaolo Bonzini } 885baacf047SPaolo Bonzini 886baacf047SPaolo Bonzini int socket_connect(SocketAddress *addr, Error **errp, 887baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 888baacf047SPaolo Bonzini { 889baacf047SPaolo Bonzini QemuOpts *opts; 890baacf047SPaolo Bonzini int fd; 891baacf047SPaolo Bonzini 892e62be888SKevin Wolf opts = qemu_opts_create_nofail(&socket_optslist); 893baacf047SPaolo Bonzini switch (addr->kind) { 894baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_INET: 895baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr->inet); 896baacf047SPaolo Bonzini fd = inet_connect_opts(opts, errp, callback, opaque); 897baacf047SPaolo Bonzini break; 898baacf047SPaolo Bonzini 899baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_UNIX: 900baacf047SPaolo Bonzini qemu_opt_set(opts, "path", addr->q_unix->path); 901baacf047SPaolo Bonzini fd = unix_connect_opts(opts, errp, callback, opaque); 902baacf047SPaolo Bonzini break; 903baacf047SPaolo Bonzini 904baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_FD: 905baacf047SPaolo Bonzini fd = monitor_get_fd(cur_mon, addr->fd->str, errp); 906d1ec72a4SGerd Hoffmann if (fd >= 0 && callback) { 9071a751ebfSStefan Hajnoczi qemu_set_nonblock(fd); 908baacf047SPaolo Bonzini callback(fd, opaque); 909baacf047SPaolo Bonzini } 910baacf047SPaolo Bonzini break; 911baacf047SPaolo Bonzini 912baacf047SPaolo Bonzini default: 913baacf047SPaolo Bonzini abort(); 914baacf047SPaolo Bonzini } 915baacf047SPaolo Bonzini qemu_opts_del(opts); 916baacf047SPaolo Bonzini return fd; 917baacf047SPaolo Bonzini } 918baacf047SPaolo Bonzini 919baacf047SPaolo Bonzini int socket_listen(SocketAddress *addr, Error **errp) 920baacf047SPaolo Bonzini { 921baacf047SPaolo Bonzini QemuOpts *opts; 922baacf047SPaolo Bonzini int fd; 923baacf047SPaolo Bonzini 924e62be888SKevin Wolf opts = qemu_opts_create_nofail(&socket_optslist); 925baacf047SPaolo Bonzini switch (addr->kind) { 926baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_INET: 927baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr->inet); 928baacf047SPaolo Bonzini fd = inet_listen_opts(opts, 0, errp); 929baacf047SPaolo Bonzini break; 930baacf047SPaolo Bonzini 931baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_UNIX: 932baacf047SPaolo Bonzini qemu_opt_set(opts, "path", addr->q_unix->path); 933baacf047SPaolo Bonzini fd = unix_listen_opts(opts, errp); 934baacf047SPaolo Bonzini break; 935baacf047SPaolo Bonzini 936baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_FD: 937baacf047SPaolo Bonzini fd = monitor_get_fd(cur_mon, addr->fd->str, errp); 938baacf047SPaolo Bonzini break; 939baacf047SPaolo Bonzini 940baacf047SPaolo Bonzini default: 941baacf047SPaolo Bonzini abort(); 942baacf047SPaolo Bonzini } 943baacf047SPaolo Bonzini qemu_opts_del(opts); 944baacf047SPaolo Bonzini return fd; 945baacf047SPaolo Bonzini } 946baacf047SPaolo Bonzini 9473ecc059dSGerd Hoffmann int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) 9483ecc059dSGerd Hoffmann { 9493ecc059dSGerd Hoffmann QemuOpts *opts; 9503ecc059dSGerd Hoffmann int fd; 9513ecc059dSGerd Hoffmann 952e62be888SKevin Wolf opts = qemu_opts_create_nofail(&socket_optslist); 9533ecc059dSGerd Hoffmann switch (remote->kind) { 9543ecc059dSGerd Hoffmann case SOCKET_ADDRESS_KIND_INET: 9553ecc059dSGerd Hoffmann qemu_opt_set(opts, "host", remote->inet->host); 9563ecc059dSGerd Hoffmann qemu_opt_set(opts, "port", remote->inet->port); 9573ecc059dSGerd Hoffmann if (local) { 9583ecc059dSGerd Hoffmann qemu_opt_set(opts, "localaddr", local->inet->host); 9593ecc059dSGerd Hoffmann qemu_opt_set(opts, "localport", local->inet->port); 9603ecc059dSGerd Hoffmann } 9613ecc059dSGerd Hoffmann fd = inet_dgram_opts(opts, errp); 9623ecc059dSGerd Hoffmann break; 9633ecc059dSGerd Hoffmann 9643ecc059dSGerd Hoffmann default: 9653ecc059dSGerd Hoffmann error_setg(errp, "socket type unsupported for datagram"); 9667a5b6af1SGerd Hoffmann fd = -1; 9673ecc059dSGerd Hoffmann } 9683ecc059dSGerd Hoffmann qemu_opts_del(opts); 9693ecc059dSGerd Hoffmann return fd; 9703ecc059dSGerd Hoffmann } 971