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-common.h" /* for qemu_isdigit */ 28baacf047SPaolo Bonzini #include "qemu/main-loop.h" 29baacf047SPaolo Bonzini 30baacf047SPaolo Bonzini #ifndef AI_ADDRCONFIG 31baacf047SPaolo Bonzini # define AI_ADDRCONFIG 0 32baacf047SPaolo Bonzini #endif 33baacf047SPaolo Bonzini 34baacf047SPaolo Bonzini static const int on=1, off=0; 35baacf047SPaolo Bonzini 36e62be888SKevin Wolf /* used temporarily until all users are converted to QemuOpts */ 37e62be888SKevin Wolf QemuOptsList socket_optslist = { 38e62be888SKevin Wolf .name = "socket", 39e62be888SKevin Wolf .head = QTAILQ_HEAD_INITIALIZER(socket_optslist.head), 40baacf047SPaolo Bonzini .desc = { 41baacf047SPaolo Bonzini { 42baacf047SPaolo Bonzini .name = "path", 43baacf047SPaolo Bonzini .type = QEMU_OPT_STRING, 44baacf047SPaolo Bonzini },{ 45baacf047SPaolo Bonzini .name = "host", 46baacf047SPaolo Bonzini .type = QEMU_OPT_STRING, 47baacf047SPaolo Bonzini },{ 48baacf047SPaolo Bonzini .name = "port", 49baacf047SPaolo Bonzini .type = QEMU_OPT_STRING, 50baacf047SPaolo Bonzini },{ 51baacf047SPaolo Bonzini .name = "to", 52baacf047SPaolo Bonzini .type = QEMU_OPT_NUMBER, 53baacf047SPaolo Bonzini },{ 54baacf047SPaolo Bonzini .name = "ipv4", 55baacf047SPaolo Bonzini .type = QEMU_OPT_BOOL, 56baacf047SPaolo Bonzini },{ 57baacf047SPaolo Bonzini .name = "ipv6", 58baacf047SPaolo Bonzini .type = QEMU_OPT_BOOL, 59baacf047SPaolo Bonzini }, 60baacf047SPaolo Bonzini { /* end if list */ } 61baacf047SPaolo Bonzini }, 62baacf047SPaolo Bonzini }; 63baacf047SPaolo Bonzini 64baacf047SPaolo Bonzini static int inet_getport(struct addrinfo *e) 65baacf047SPaolo Bonzini { 66baacf047SPaolo Bonzini struct sockaddr_in *i4; 67baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 68baacf047SPaolo Bonzini 69baacf047SPaolo Bonzini switch (e->ai_family) { 70baacf047SPaolo Bonzini case PF_INET6: 71baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 72baacf047SPaolo Bonzini return ntohs(i6->sin6_port); 73baacf047SPaolo Bonzini case PF_INET: 74baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 75baacf047SPaolo Bonzini return ntohs(i4->sin_port); 76baacf047SPaolo Bonzini default: 77baacf047SPaolo Bonzini return 0; 78baacf047SPaolo Bonzini } 79baacf047SPaolo Bonzini } 80baacf047SPaolo Bonzini 81baacf047SPaolo Bonzini static void inet_setport(struct addrinfo *e, int port) 82baacf047SPaolo Bonzini { 83baacf047SPaolo Bonzini struct sockaddr_in *i4; 84baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 85baacf047SPaolo Bonzini 86baacf047SPaolo Bonzini switch (e->ai_family) { 87baacf047SPaolo Bonzini case PF_INET6: 88baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 89baacf047SPaolo Bonzini i6->sin6_port = htons(port); 90baacf047SPaolo Bonzini break; 91baacf047SPaolo Bonzini case PF_INET: 92baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 93baacf047SPaolo Bonzini i4->sin_port = htons(port); 94baacf047SPaolo Bonzini break; 95baacf047SPaolo Bonzini } 96baacf047SPaolo Bonzini } 97baacf047SPaolo Bonzini 98baacf047SPaolo Bonzini const char *inet_strfamily(int family) 99baacf047SPaolo Bonzini { 100baacf047SPaolo Bonzini switch (family) { 101baacf047SPaolo Bonzini case PF_INET6: return "ipv6"; 102baacf047SPaolo Bonzini case PF_INET: return "ipv4"; 103baacf047SPaolo Bonzini case PF_UNIX: return "unix"; 104baacf047SPaolo Bonzini } 105baacf047SPaolo Bonzini return "unknown"; 106baacf047SPaolo Bonzini } 107baacf047SPaolo Bonzini 108baacf047SPaolo Bonzini int inet_listen_opts(QemuOpts *opts, int port_offset, Error **errp) 109baacf047SPaolo Bonzini { 110baacf047SPaolo Bonzini struct addrinfo ai,*res,*e; 111baacf047SPaolo Bonzini const char *addr; 112baacf047SPaolo Bonzini char port[33]; 113baacf047SPaolo Bonzini char uaddr[INET6_ADDRSTRLEN+1]; 114baacf047SPaolo Bonzini char uport[33]; 115baacf047SPaolo Bonzini int slisten, rc, to, port_min, port_max, p; 116baacf047SPaolo Bonzini 117baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 118baacf047SPaolo Bonzini ai.ai_flags = AI_PASSIVE | AI_ADDRCONFIG; 119baacf047SPaolo Bonzini ai.ai_family = PF_UNSPEC; 120baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 121baacf047SPaolo Bonzini 122baacf047SPaolo Bonzini if ((qemu_opt_get(opts, "host") == NULL) || 123baacf047SPaolo Bonzini (qemu_opt_get(opts, "port") == NULL)) { 124baacf047SPaolo Bonzini error_setg(errp, "host and/or port not specified"); 125baacf047SPaolo Bonzini return -1; 126baacf047SPaolo Bonzini } 127baacf047SPaolo Bonzini pstrcpy(port, sizeof(port), qemu_opt_get(opts, "port")); 128baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "host"); 129baacf047SPaolo Bonzini 130baacf047SPaolo Bonzini to = qemu_opt_get_number(opts, "to", 0); 131baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv4", 0)) 132baacf047SPaolo Bonzini ai.ai_family = PF_INET; 133baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) 134baacf047SPaolo Bonzini ai.ai_family = PF_INET6; 135baacf047SPaolo Bonzini 136baacf047SPaolo Bonzini /* lookup */ 137baacf047SPaolo Bonzini if (port_offset) 138baacf047SPaolo Bonzini snprintf(port, sizeof(port), "%d", atoi(port) + port_offset); 139baacf047SPaolo Bonzini rc = getaddrinfo(strlen(addr) ? addr : NULL, port, &ai, &res); 140baacf047SPaolo Bonzini if (rc != 0) { 141baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 142baacf047SPaolo Bonzini gai_strerror(rc)); 143baacf047SPaolo Bonzini return -1; 144baacf047SPaolo Bonzini } 145baacf047SPaolo Bonzini 146baacf047SPaolo Bonzini /* create socket + bind */ 147baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 148baacf047SPaolo Bonzini getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, 149baacf047SPaolo Bonzini uaddr,INET6_ADDRSTRLEN,uport,32, 150baacf047SPaolo Bonzini NI_NUMERICHOST | NI_NUMERICSERV); 151baacf047SPaolo Bonzini slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); 152baacf047SPaolo Bonzini if (slisten < 0) { 153baacf047SPaolo Bonzini if (!e->ai_next) { 154baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); 155baacf047SPaolo Bonzini } 156baacf047SPaolo Bonzini continue; 157baacf047SPaolo Bonzini } 158baacf047SPaolo Bonzini 1599957fc7fSStefan Weil qemu_setsockopt(slisten, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)); 160baacf047SPaolo Bonzini #ifdef IPV6_V6ONLY 161baacf047SPaolo Bonzini if (e->ai_family == PF_INET6) { 162baacf047SPaolo Bonzini /* listen on both ipv4 and ipv6 */ 1639957fc7fSStefan Weil qemu_setsockopt(slisten, IPPROTO_IPV6, IPV6_V6ONLY, &off, 164baacf047SPaolo Bonzini sizeof(off)); 165baacf047SPaolo Bonzini } 166baacf047SPaolo Bonzini #endif 167baacf047SPaolo Bonzini 168baacf047SPaolo Bonzini port_min = inet_getport(e); 169baacf047SPaolo Bonzini port_max = to ? to + port_offset : port_min; 170baacf047SPaolo Bonzini for (p = port_min; p <= port_max; p++) { 171baacf047SPaolo Bonzini inet_setport(e, p); 172baacf047SPaolo Bonzini if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) { 173baacf047SPaolo Bonzini goto listen; 174baacf047SPaolo Bonzini } 175baacf047SPaolo Bonzini if (p == port_max) { 176baacf047SPaolo Bonzini if (!e->ai_next) { 177baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_BIND_FAILED); 178baacf047SPaolo Bonzini } 179baacf047SPaolo Bonzini } 180baacf047SPaolo Bonzini } 181baacf047SPaolo Bonzini closesocket(slisten); 182baacf047SPaolo Bonzini } 183baacf047SPaolo Bonzini freeaddrinfo(res); 184baacf047SPaolo Bonzini return -1; 185baacf047SPaolo Bonzini 186baacf047SPaolo Bonzini listen: 187baacf047SPaolo Bonzini if (listen(slisten,1) != 0) { 188baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_LISTEN_FAILED); 189baacf047SPaolo Bonzini closesocket(slisten); 190baacf047SPaolo Bonzini freeaddrinfo(res); 191baacf047SPaolo Bonzini return -1; 192baacf047SPaolo Bonzini } 193baacf047SPaolo Bonzini snprintf(uport, sizeof(uport), "%d", inet_getport(e) - port_offset); 194baacf047SPaolo Bonzini qemu_opt_set(opts, "host", uaddr); 195baacf047SPaolo Bonzini qemu_opt_set(opts, "port", uport); 196baacf047SPaolo Bonzini qemu_opt_set(opts, "ipv6", (e->ai_family == PF_INET6) ? "on" : "off"); 197baacf047SPaolo Bonzini qemu_opt_set(opts, "ipv4", (e->ai_family != PF_INET6) ? "on" : "off"); 198baacf047SPaolo Bonzini freeaddrinfo(res); 199baacf047SPaolo Bonzini return slisten; 200baacf047SPaolo Bonzini } 201baacf047SPaolo Bonzini 202baacf047SPaolo Bonzini #ifdef _WIN32 203baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 204baacf047SPaolo Bonzini ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) 205baacf047SPaolo Bonzini #else 206baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 207baacf047SPaolo Bonzini ((rc) == -EINPROGRESS) 208baacf047SPaolo Bonzini #endif 209baacf047SPaolo Bonzini 210baacf047SPaolo Bonzini /* Struct to store connect state for non blocking connect */ 211baacf047SPaolo Bonzini typedef struct ConnectState { 212baacf047SPaolo Bonzini int fd; 213baacf047SPaolo Bonzini struct addrinfo *addr_list; 214baacf047SPaolo Bonzini struct addrinfo *current_addr; 215baacf047SPaolo Bonzini NonBlockingConnectHandler *callback; 216baacf047SPaolo Bonzini void *opaque; 217baacf047SPaolo Bonzini } ConnectState; 218baacf047SPaolo Bonzini 219baacf047SPaolo Bonzini static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, 220baacf047SPaolo Bonzini ConnectState *connect_state, Error **errp); 221baacf047SPaolo Bonzini 222baacf047SPaolo Bonzini static void wait_for_connect(void *opaque) 223baacf047SPaolo Bonzini { 224baacf047SPaolo Bonzini ConnectState *s = opaque; 225baacf047SPaolo Bonzini int val = 0, rc = 0; 226baacf047SPaolo Bonzini socklen_t valsize = sizeof(val); 227baacf047SPaolo Bonzini bool in_progress; 228baacf047SPaolo Bonzini 229baacf047SPaolo Bonzini qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL); 230baacf047SPaolo Bonzini 231baacf047SPaolo Bonzini do { 2329957fc7fSStefan Weil rc = qemu_getsockopt(s->fd, SOL_SOCKET, SO_ERROR, &val, &valsize); 233baacf047SPaolo Bonzini } while (rc == -1 && socket_error() == EINTR); 234baacf047SPaolo Bonzini 235baacf047SPaolo Bonzini /* update rc to contain error */ 236baacf047SPaolo Bonzini if (!rc && val) { 237baacf047SPaolo Bonzini rc = -1; 238baacf047SPaolo Bonzini } 239baacf047SPaolo Bonzini 240baacf047SPaolo Bonzini /* connect error */ 241baacf047SPaolo Bonzini if (rc < 0) { 242baacf047SPaolo Bonzini closesocket(s->fd); 243baacf047SPaolo Bonzini s->fd = rc; 244baacf047SPaolo Bonzini } 245baacf047SPaolo Bonzini 246baacf047SPaolo Bonzini /* try to connect to the next address on the list */ 247baacf047SPaolo Bonzini if (s->current_addr) { 248baacf047SPaolo Bonzini while (s->current_addr->ai_next != NULL && s->fd < 0) { 249baacf047SPaolo Bonzini s->current_addr = s->current_addr->ai_next; 250baacf047SPaolo Bonzini s->fd = inet_connect_addr(s->current_addr, &in_progress, s, NULL); 251baacf047SPaolo Bonzini /* connect in progress */ 252baacf047SPaolo Bonzini if (in_progress) { 253baacf047SPaolo Bonzini return; 254baacf047SPaolo Bonzini } 255baacf047SPaolo Bonzini } 256baacf047SPaolo Bonzini 257baacf047SPaolo Bonzini freeaddrinfo(s->addr_list); 258baacf047SPaolo Bonzini } 259baacf047SPaolo Bonzini 260baacf047SPaolo Bonzini if (s->callback) { 261baacf047SPaolo Bonzini s->callback(s->fd, s->opaque); 262baacf047SPaolo Bonzini } 263baacf047SPaolo Bonzini g_free(s); 264baacf047SPaolo Bonzini } 265baacf047SPaolo Bonzini 266baacf047SPaolo Bonzini static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, 267baacf047SPaolo Bonzini ConnectState *connect_state, Error **errp) 268baacf047SPaolo Bonzini { 269baacf047SPaolo Bonzini int sock, rc; 270baacf047SPaolo Bonzini 271baacf047SPaolo Bonzini *in_progress = false; 272baacf047SPaolo Bonzini 273baacf047SPaolo Bonzini sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); 274baacf047SPaolo Bonzini if (sock < 0) { 275baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); 276baacf047SPaolo Bonzini return -1; 277baacf047SPaolo Bonzini } 278baacf047SPaolo Bonzini qemu_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)); 279baacf047SPaolo Bonzini if (connect_state != NULL) { 280f9e8caccSStefan Hajnoczi qemu_set_nonblock(sock); 281baacf047SPaolo Bonzini } 282baacf047SPaolo Bonzini /* connect to peer */ 283baacf047SPaolo Bonzini do { 284baacf047SPaolo Bonzini rc = 0; 285baacf047SPaolo Bonzini if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { 286baacf047SPaolo Bonzini rc = -socket_error(); 287baacf047SPaolo Bonzini } 288baacf047SPaolo Bonzini } while (rc == -EINTR); 289baacf047SPaolo Bonzini 290baacf047SPaolo Bonzini if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { 291baacf047SPaolo Bonzini connect_state->fd = sock; 292baacf047SPaolo Bonzini qemu_set_fd_handler2(sock, NULL, NULL, wait_for_connect, 293baacf047SPaolo Bonzini connect_state); 294baacf047SPaolo Bonzini *in_progress = true; 295baacf047SPaolo Bonzini } else if (rc < 0) { 296baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CONNECT_FAILED); 297baacf047SPaolo Bonzini closesocket(sock); 298baacf047SPaolo Bonzini return -1; 299baacf047SPaolo Bonzini } 300baacf047SPaolo Bonzini return sock; 301baacf047SPaolo Bonzini } 302baacf047SPaolo Bonzini 303baacf047SPaolo Bonzini static struct addrinfo *inet_parse_connect_opts(QemuOpts *opts, Error **errp) 304baacf047SPaolo Bonzini { 305baacf047SPaolo Bonzini struct addrinfo ai, *res; 306baacf047SPaolo Bonzini int rc; 307baacf047SPaolo Bonzini const char *addr; 308baacf047SPaolo Bonzini const char *port; 309baacf047SPaolo Bonzini 310baacf047SPaolo Bonzini memset(&ai, 0, sizeof(ai)); 311baacf047SPaolo Bonzini 312baacf047SPaolo Bonzini ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; 313baacf047SPaolo Bonzini ai.ai_family = PF_UNSPEC; 314baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 315baacf047SPaolo Bonzini 316baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "host"); 317baacf047SPaolo Bonzini port = qemu_opt_get(opts, "port"); 318baacf047SPaolo Bonzini if (addr == NULL || port == NULL) { 319baacf047SPaolo Bonzini error_setg(errp, "host and/or port not specified"); 320baacf047SPaolo Bonzini return NULL; 321baacf047SPaolo Bonzini } 322baacf047SPaolo Bonzini 323baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv4", 0)) { 324baacf047SPaolo Bonzini ai.ai_family = PF_INET; 325baacf047SPaolo Bonzini } 326baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) { 327baacf047SPaolo Bonzini ai.ai_family = PF_INET6; 328baacf047SPaolo Bonzini } 329baacf047SPaolo Bonzini 330baacf047SPaolo Bonzini /* lookup */ 331baacf047SPaolo Bonzini rc = getaddrinfo(addr, port, &ai, &res); 332baacf047SPaolo Bonzini if (rc != 0) { 333baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 334baacf047SPaolo Bonzini gai_strerror(rc)); 335baacf047SPaolo Bonzini return NULL; 336baacf047SPaolo Bonzini } 337baacf047SPaolo Bonzini return res; 338baacf047SPaolo Bonzini } 339baacf047SPaolo Bonzini 340baacf047SPaolo Bonzini /** 341baacf047SPaolo Bonzini * Create a socket and connect it to an address. 342baacf047SPaolo Bonzini * 343baacf047SPaolo Bonzini * @opts: QEMU options, recognized parameters strings "host" and "port", 344baacf047SPaolo Bonzini * bools "ipv4" and "ipv6". 345baacf047SPaolo Bonzini * @errp: set on error 346baacf047SPaolo Bonzini * @callback: callback function for non-blocking connect 347baacf047SPaolo Bonzini * @opaque: opaque for callback function 348baacf047SPaolo Bonzini * 349baacf047SPaolo Bonzini * Returns: -1 on error, file descriptor on success. 350baacf047SPaolo Bonzini * 351baacf047SPaolo Bonzini * If @callback is non-null, the connect is non-blocking. If this 352baacf047SPaolo Bonzini * function succeeds, callback will be called when the connection 353baacf047SPaolo Bonzini * completes, with the file descriptor on success, or -1 on error. 354baacf047SPaolo Bonzini */ 355baacf047SPaolo Bonzini int inet_connect_opts(QemuOpts *opts, Error **errp, 356baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 357baacf047SPaolo Bonzini { 358baacf047SPaolo Bonzini struct addrinfo *res, *e; 359baacf047SPaolo Bonzini int sock = -1; 360baacf047SPaolo Bonzini bool in_progress; 361baacf047SPaolo Bonzini ConnectState *connect_state = NULL; 362baacf047SPaolo Bonzini 363baacf047SPaolo Bonzini res = inet_parse_connect_opts(opts, errp); 364baacf047SPaolo Bonzini if (!res) { 365baacf047SPaolo Bonzini return -1; 366baacf047SPaolo Bonzini } 367baacf047SPaolo Bonzini 368baacf047SPaolo Bonzini if (callback != NULL) { 369baacf047SPaolo Bonzini connect_state = g_malloc0(sizeof(*connect_state)); 370baacf047SPaolo Bonzini connect_state->addr_list = res; 371baacf047SPaolo Bonzini connect_state->callback = callback; 372baacf047SPaolo Bonzini connect_state->opaque = opaque; 373baacf047SPaolo Bonzini } 374baacf047SPaolo Bonzini 375baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 376baca6f18SAnthony Liguori if (error_is_set(errp)) { 377baca6f18SAnthony Liguori error_free(*errp); 378baca6f18SAnthony Liguori *errp = NULL; 379baca6f18SAnthony Liguori } 380baacf047SPaolo Bonzini if (connect_state != NULL) { 381baacf047SPaolo Bonzini connect_state->current_addr = e; 382baacf047SPaolo Bonzini } 383baacf047SPaolo Bonzini sock = inet_connect_addr(e, &in_progress, connect_state, errp); 384baacf047SPaolo Bonzini if (in_progress) { 385baacf047SPaolo Bonzini return sock; 386baacf047SPaolo Bonzini } else if (sock >= 0) { 387baacf047SPaolo Bonzini /* non blocking socket immediate success, call callback */ 388baacf047SPaolo Bonzini if (callback != NULL) { 389baacf047SPaolo Bonzini callback(sock, opaque); 390baacf047SPaolo Bonzini } 391baacf047SPaolo Bonzini break; 392baacf047SPaolo Bonzini } 393baacf047SPaolo Bonzini } 394baacf047SPaolo Bonzini g_free(connect_state); 395baacf047SPaolo Bonzini freeaddrinfo(res); 396baacf047SPaolo Bonzini return sock; 397baacf047SPaolo Bonzini } 398baacf047SPaolo Bonzini 399baacf047SPaolo Bonzini int inet_dgram_opts(QemuOpts *opts, Error **errp) 400baacf047SPaolo Bonzini { 401baacf047SPaolo Bonzini struct addrinfo ai, *peer = NULL, *local = NULL; 402baacf047SPaolo Bonzini const char *addr; 403baacf047SPaolo Bonzini const char *port; 404baacf047SPaolo Bonzini int sock = -1, rc; 405baacf047SPaolo Bonzini 406baacf047SPaolo Bonzini /* lookup peer addr */ 407baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 408baacf047SPaolo Bonzini ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; 409baacf047SPaolo Bonzini ai.ai_family = PF_UNSPEC; 410baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 411baacf047SPaolo Bonzini 412baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "host"); 413baacf047SPaolo Bonzini port = qemu_opt_get(opts, "port"); 414baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 415baacf047SPaolo Bonzini addr = "localhost"; 416baacf047SPaolo Bonzini } 417baacf047SPaolo Bonzini if (port == NULL || strlen(port) == 0) { 418baacf047SPaolo Bonzini error_setg(errp, "remote port not specified"); 419baacf047SPaolo Bonzini return -1; 420baacf047SPaolo Bonzini } 421baacf047SPaolo Bonzini 422baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv4", 0)) 423baacf047SPaolo Bonzini ai.ai_family = PF_INET; 424baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) 425baacf047SPaolo Bonzini ai.ai_family = PF_INET6; 426baacf047SPaolo Bonzini 427baacf047SPaolo Bonzini if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) { 428baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 429baacf047SPaolo Bonzini gai_strerror(rc)); 430baacf047SPaolo Bonzini return -1; 431baacf047SPaolo Bonzini } 432baacf047SPaolo Bonzini 433baacf047SPaolo Bonzini /* lookup local addr */ 434baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 435baacf047SPaolo Bonzini ai.ai_flags = AI_PASSIVE; 436baacf047SPaolo Bonzini ai.ai_family = peer->ai_family; 437baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 438baacf047SPaolo Bonzini 439baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "localaddr"); 440baacf047SPaolo Bonzini port = qemu_opt_get(opts, "localport"); 441baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 442baacf047SPaolo Bonzini addr = NULL; 443baacf047SPaolo Bonzini } 444baacf047SPaolo Bonzini if (!port || strlen(port) == 0) 445baacf047SPaolo Bonzini port = "0"; 446baacf047SPaolo Bonzini 447baacf047SPaolo Bonzini if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) { 448baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 449baacf047SPaolo Bonzini gai_strerror(rc)); 450baacf047SPaolo Bonzini goto err; 451baacf047SPaolo Bonzini } 452baacf047SPaolo Bonzini 453baacf047SPaolo Bonzini /* create socket */ 454baacf047SPaolo Bonzini sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); 455baacf047SPaolo Bonzini if (sock < 0) { 456baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); 457baacf047SPaolo Bonzini goto err; 458baacf047SPaolo Bonzini } 4599957fc7fSStefan Weil qemu_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)); 460baacf047SPaolo Bonzini 461baacf047SPaolo Bonzini /* bind socket */ 462baacf047SPaolo Bonzini if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { 463baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_BIND_FAILED); 464baacf047SPaolo Bonzini goto err; 465baacf047SPaolo Bonzini } 466baacf047SPaolo Bonzini 467baacf047SPaolo Bonzini /* connect to peer */ 468baacf047SPaolo Bonzini if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { 469baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CONNECT_FAILED); 470baacf047SPaolo Bonzini goto err; 471baacf047SPaolo Bonzini } 472baacf047SPaolo Bonzini 473baacf047SPaolo Bonzini freeaddrinfo(local); 474baacf047SPaolo Bonzini freeaddrinfo(peer); 475baacf047SPaolo Bonzini return sock; 476baacf047SPaolo Bonzini 477baacf047SPaolo Bonzini err: 478baacf047SPaolo Bonzini if (-1 != sock) 479baacf047SPaolo Bonzini closesocket(sock); 480baacf047SPaolo Bonzini if (local) 481baacf047SPaolo Bonzini freeaddrinfo(local); 482baacf047SPaolo Bonzini if (peer) 483baacf047SPaolo Bonzini freeaddrinfo(peer); 484baacf047SPaolo Bonzini return -1; 485baacf047SPaolo Bonzini } 486baacf047SPaolo Bonzini 487baacf047SPaolo Bonzini /* compatibility wrapper */ 488f17c90beSKevin Wolf InetSocketAddress *inet_parse(const char *str, Error **errp) 489baacf047SPaolo Bonzini { 490baacf047SPaolo Bonzini InetSocketAddress *addr; 491baacf047SPaolo Bonzini const char *optstr, *h; 492baacf047SPaolo Bonzini char host[64]; 493baacf047SPaolo Bonzini char port[33]; 494baacf047SPaolo Bonzini int to; 495baacf047SPaolo Bonzini int pos; 496baacf047SPaolo Bonzini 497baacf047SPaolo Bonzini addr = g_new0(InetSocketAddress, 1); 498baacf047SPaolo Bonzini 499baacf047SPaolo Bonzini /* parse address */ 500baacf047SPaolo Bonzini if (str[0] == ':') { 501baacf047SPaolo Bonzini /* no host given */ 502baacf047SPaolo Bonzini host[0] = '\0'; 503baacf047SPaolo Bonzini if (1 != sscanf(str, ":%32[^,]%n", port, &pos)) { 504baacf047SPaolo Bonzini error_setg(errp, "error parsing port in address '%s'", str); 505baacf047SPaolo Bonzini goto fail; 506baacf047SPaolo Bonzini } 507baacf047SPaolo Bonzini } else if (str[0] == '[') { 508baacf047SPaolo Bonzini /* IPv6 addr */ 509baacf047SPaolo Bonzini if (2 != sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos)) { 510baacf047SPaolo Bonzini error_setg(errp, "error parsing IPv6 address '%s'", str); 511baacf047SPaolo Bonzini goto fail; 512baacf047SPaolo Bonzini } 513baacf047SPaolo Bonzini addr->ipv6 = addr->has_ipv6 = true; 514baacf047SPaolo Bonzini } else if (qemu_isdigit(str[0])) { 515baacf047SPaolo Bonzini /* IPv4 addr */ 516baacf047SPaolo Bonzini if (2 != sscanf(str, "%64[0-9.]:%32[^,]%n", host, port, &pos)) { 517baacf047SPaolo Bonzini error_setg(errp, "error parsing IPv4 address '%s'", str); 518baacf047SPaolo Bonzini goto fail; 519baacf047SPaolo Bonzini } 520baacf047SPaolo Bonzini addr->ipv4 = addr->has_ipv4 = true; 521baacf047SPaolo Bonzini } else { 522baacf047SPaolo Bonzini /* hostname */ 523baacf047SPaolo Bonzini if (2 != sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos)) { 524baacf047SPaolo Bonzini error_setg(errp, "error parsing address '%s'", str); 525baacf047SPaolo Bonzini goto fail; 526baacf047SPaolo Bonzini } 527baacf047SPaolo Bonzini } 528baacf047SPaolo Bonzini 529baacf047SPaolo Bonzini addr->host = g_strdup(host); 530baacf047SPaolo Bonzini addr->port = g_strdup(port); 531baacf047SPaolo Bonzini 532baacf047SPaolo Bonzini /* parse options */ 533baacf047SPaolo Bonzini optstr = str + pos; 534baacf047SPaolo Bonzini h = strstr(optstr, ",to="); 535baacf047SPaolo Bonzini if (h) { 536baacf047SPaolo Bonzini h += 4; 537baacf047SPaolo Bonzini if (sscanf(h, "%d%n", &to, &pos) != 1 || 538baacf047SPaolo Bonzini (h[pos] != '\0' && h[pos] != ',')) { 539baacf047SPaolo Bonzini error_setg(errp, "error parsing to= argument"); 540baacf047SPaolo Bonzini goto fail; 541baacf047SPaolo Bonzini } 542baacf047SPaolo Bonzini addr->has_to = true; 543baacf047SPaolo Bonzini addr->to = to; 544baacf047SPaolo Bonzini } 545baacf047SPaolo Bonzini if (strstr(optstr, ",ipv4")) { 546baacf047SPaolo Bonzini addr->ipv4 = addr->has_ipv4 = true; 547baacf047SPaolo Bonzini } 548baacf047SPaolo Bonzini if (strstr(optstr, ",ipv6")) { 549baacf047SPaolo Bonzini addr->ipv6 = addr->has_ipv6 = true; 550baacf047SPaolo Bonzini } 551baacf047SPaolo Bonzini return addr; 552baacf047SPaolo Bonzini 553baacf047SPaolo Bonzini fail: 554baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 555baacf047SPaolo Bonzini return NULL; 556baacf047SPaolo Bonzini } 557baacf047SPaolo Bonzini 558f17c90beSKevin Wolf static void inet_addr_to_opts(QemuOpts *opts, const InetSocketAddress *addr) 559baacf047SPaolo Bonzini { 560baacf047SPaolo Bonzini bool ipv4 = addr->ipv4 || !addr->has_ipv4; 561baacf047SPaolo Bonzini bool ipv6 = addr->ipv6 || !addr->has_ipv6; 562baacf047SPaolo Bonzini 563baacf047SPaolo Bonzini if (!ipv4 || !ipv6) { 564baacf047SPaolo Bonzini qemu_opt_set_bool(opts, "ipv4", ipv4); 565baacf047SPaolo Bonzini qemu_opt_set_bool(opts, "ipv6", ipv6); 566baacf047SPaolo Bonzini } 567baacf047SPaolo Bonzini if (addr->has_to) { 568baacf047SPaolo Bonzini char to[20]; 569baacf047SPaolo Bonzini snprintf(to, sizeof(to), "%d", addr->to); 570baacf047SPaolo Bonzini qemu_opt_set(opts, "to", to); 571baacf047SPaolo Bonzini } 572baacf047SPaolo Bonzini qemu_opt_set(opts, "host", addr->host); 573baacf047SPaolo Bonzini qemu_opt_set(opts, "port", addr->port); 574baacf047SPaolo Bonzini } 575baacf047SPaolo Bonzini 576baacf047SPaolo Bonzini int inet_listen(const char *str, char *ostr, int olen, 577baacf047SPaolo Bonzini int socktype, int port_offset, Error **errp) 578baacf047SPaolo Bonzini { 579baacf047SPaolo Bonzini QemuOpts *opts; 580baacf047SPaolo Bonzini char *optstr; 581baacf047SPaolo Bonzini int sock = -1; 582baacf047SPaolo Bonzini InetSocketAddress *addr; 583baacf047SPaolo Bonzini 584baacf047SPaolo Bonzini addr = inet_parse(str, errp); 585baacf047SPaolo Bonzini if (addr != NULL) { 586e62be888SKevin Wolf opts = qemu_opts_create_nofail(&socket_optslist); 587baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr); 588baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 589baacf047SPaolo Bonzini sock = inet_listen_opts(opts, port_offset, errp); 590baacf047SPaolo Bonzini if (sock != -1 && ostr) { 591baacf047SPaolo Bonzini optstr = strchr(str, ','); 592baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) { 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 } else { 598baacf047SPaolo Bonzini snprintf(ostr, olen, "%s:%s%s", 599baacf047SPaolo Bonzini qemu_opt_get(opts, "host"), 600baacf047SPaolo Bonzini qemu_opt_get(opts, "port"), 601baacf047SPaolo Bonzini optstr ? optstr : ""); 602baacf047SPaolo Bonzini } 603baacf047SPaolo Bonzini } 604baacf047SPaolo Bonzini qemu_opts_del(opts); 605baacf047SPaolo Bonzini } 606baacf047SPaolo Bonzini return sock; 607baacf047SPaolo Bonzini } 608baacf047SPaolo Bonzini 609baacf047SPaolo Bonzini /** 610baacf047SPaolo Bonzini * Create a blocking socket and connect it to an address. 611baacf047SPaolo Bonzini * 612baacf047SPaolo Bonzini * @str: address string 613baacf047SPaolo Bonzini * @errp: set in case of an error 614baacf047SPaolo Bonzini * 615baacf047SPaolo Bonzini * Returns -1 in case of error, file descriptor on success 616baacf047SPaolo Bonzini **/ 617baacf047SPaolo Bonzini int inet_connect(const char *str, Error **errp) 618baacf047SPaolo Bonzini { 619baacf047SPaolo Bonzini QemuOpts *opts; 620baacf047SPaolo Bonzini int sock = -1; 621baacf047SPaolo Bonzini InetSocketAddress *addr; 622baacf047SPaolo Bonzini 623baacf047SPaolo Bonzini addr = inet_parse(str, errp); 624baacf047SPaolo Bonzini if (addr != NULL) { 625f17c90beSKevin Wolf opts = qemu_opts_create_nofail(&socket_optslist); 626baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr); 627baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 628baacf047SPaolo Bonzini sock = inet_connect_opts(opts, errp, NULL, NULL); 629baacf047SPaolo Bonzini qemu_opts_del(opts); 630baacf047SPaolo Bonzini } 631baacf047SPaolo Bonzini return sock; 632baacf047SPaolo Bonzini } 633baacf047SPaolo Bonzini 634baacf047SPaolo Bonzini /** 635baacf047SPaolo Bonzini * Create a non-blocking socket and connect it to an address. 636baacf047SPaolo Bonzini * Calls the callback function with fd in case of success or -1 in case of 637baacf047SPaolo Bonzini * error. 638baacf047SPaolo Bonzini * 639baacf047SPaolo Bonzini * @str: address string 640baacf047SPaolo Bonzini * @callback: callback function that is called when connect completes, 641baacf047SPaolo Bonzini * cannot be NULL. 642baacf047SPaolo Bonzini * @opaque: opaque for callback function 643baacf047SPaolo Bonzini * @errp: set in case of an error 644baacf047SPaolo Bonzini * 645baacf047SPaolo Bonzini * Returns: -1 on immediate error, file descriptor on success. 646baacf047SPaolo Bonzini **/ 647baacf047SPaolo Bonzini int inet_nonblocking_connect(const char *str, 648baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, 649baacf047SPaolo Bonzini void *opaque, Error **errp) 650baacf047SPaolo Bonzini { 651baacf047SPaolo Bonzini QemuOpts *opts; 652baacf047SPaolo Bonzini int sock = -1; 653baacf047SPaolo Bonzini InetSocketAddress *addr; 654baacf047SPaolo Bonzini 655baacf047SPaolo Bonzini g_assert(callback != NULL); 656baacf047SPaolo Bonzini 657baacf047SPaolo Bonzini addr = inet_parse(str, errp); 658baacf047SPaolo Bonzini if (addr != NULL) { 659e62be888SKevin Wolf opts = qemu_opts_create_nofail(&socket_optslist); 660baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr); 661baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 662baacf047SPaolo Bonzini sock = inet_connect_opts(opts, errp, callback, opaque); 663baacf047SPaolo Bonzini qemu_opts_del(opts); 664baacf047SPaolo Bonzini } 665baacf047SPaolo Bonzini return sock; 666baacf047SPaolo Bonzini } 667baacf047SPaolo Bonzini 668baacf047SPaolo Bonzini #ifndef _WIN32 669baacf047SPaolo Bonzini 670baacf047SPaolo Bonzini int unix_listen_opts(QemuOpts *opts, Error **errp) 671baacf047SPaolo Bonzini { 672baacf047SPaolo Bonzini struct sockaddr_un un; 673baacf047SPaolo Bonzini const char *path = qemu_opt_get(opts, "path"); 674baacf047SPaolo Bonzini int sock, fd; 675baacf047SPaolo Bonzini 676baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 677baacf047SPaolo Bonzini if (sock < 0) { 678baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); 679baacf047SPaolo Bonzini return -1; 680baacf047SPaolo Bonzini } 681baacf047SPaolo Bonzini 682baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 683baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 684baacf047SPaolo Bonzini if (path && strlen(path)) { 685baacf047SPaolo Bonzini snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); 686baacf047SPaolo Bonzini } else { 687baacf047SPaolo Bonzini char *tmpdir = getenv("TMPDIR"); 688baacf047SPaolo Bonzini snprintf(un.sun_path, sizeof(un.sun_path), "%s/qemu-socket-XXXXXX", 689baacf047SPaolo Bonzini tmpdir ? tmpdir : "/tmp"); 690baacf047SPaolo Bonzini /* 691baacf047SPaolo Bonzini * This dummy fd usage silences the mktemp() unsecure warning. 692baacf047SPaolo Bonzini * Using mkstemp() doesn't make things more secure here 693baacf047SPaolo Bonzini * though. bind() complains about existing files, so we have 694baacf047SPaolo Bonzini * to unlink first and thus re-open the race window. The 695baacf047SPaolo Bonzini * worst case possible is bind() failing, i.e. a DoS attack. 696baacf047SPaolo Bonzini */ 697baacf047SPaolo Bonzini fd = mkstemp(un.sun_path); close(fd); 698baacf047SPaolo Bonzini qemu_opt_set(opts, "path", un.sun_path); 699baacf047SPaolo Bonzini } 700baacf047SPaolo Bonzini 701baacf047SPaolo Bonzini unlink(un.sun_path); 702baacf047SPaolo Bonzini if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { 703baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_BIND_FAILED); 704baacf047SPaolo Bonzini goto err; 705baacf047SPaolo Bonzini } 706baacf047SPaolo Bonzini if (listen(sock, 1) < 0) { 707baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_LISTEN_FAILED); 708baacf047SPaolo Bonzini goto err; 709baacf047SPaolo Bonzini } 710baacf047SPaolo Bonzini 711baacf047SPaolo Bonzini return sock; 712baacf047SPaolo Bonzini 713baacf047SPaolo Bonzini err: 714baacf047SPaolo Bonzini closesocket(sock); 715baacf047SPaolo Bonzini return -1; 716baacf047SPaolo Bonzini } 717baacf047SPaolo Bonzini 718baacf047SPaolo Bonzini int unix_connect_opts(QemuOpts *opts, Error **errp, 719baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 720baacf047SPaolo Bonzini { 721baacf047SPaolo Bonzini struct sockaddr_un un; 722baacf047SPaolo Bonzini const char *path = qemu_opt_get(opts, "path"); 723baacf047SPaolo Bonzini ConnectState *connect_state = NULL; 724baacf047SPaolo Bonzini int sock, rc; 725baacf047SPaolo Bonzini 726baacf047SPaolo Bonzini if (NULL == path) { 727312fd5f2SMarkus Armbruster error_setg(errp, "unix connect: no path specified"); 728baacf047SPaolo Bonzini return -1; 729baacf047SPaolo Bonzini } 730baacf047SPaolo Bonzini 731baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 732baacf047SPaolo Bonzini if (sock < 0) { 733baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); 734baacf047SPaolo Bonzini return -1; 735baacf047SPaolo Bonzini } 736baacf047SPaolo Bonzini if (callback != NULL) { 737baacf047SPaolo Bonzini connect_state = g_malloc0(sizeof(*connect_state)); 738baacf047SPaolo Bonzini connect_state->callback = callback; 739baacf047SPaolo Bonzini connect_state->opaque = opaque; 740f9e8caccSStefan Hajnoczi qemu_set_nonblock(sock); 741baacf047SPaolo Bonzini } 742baacf047SPaolo Bonzini 743baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 744baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 745baacf047SPaolo Bonzini snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); 746baacf047SPaolo Bonzini 747baacf047SPaolo Bonzini /* connect to peer */ 748baacf047SPaolo Bonzini do { 749baacf047SPaolo Bonzini rc = 0; 750baacf047SPaolo Bonzini if (connect(sock, (struct sockaddr *) &un, sizeof(un)) < 0) { 751baacf047SPaolo Bonzini rc = -socket_error(); 752baacf047SPaolo Bonzini } 753baacf047SPaolo Bonzini } while (rc == -EINTR); 754baacf047SPaolo Bonzini 755baacf047SPaolo Bonzini if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { 756baacf047SPaolo Bonzini connect_state->fd = sock; 757baacf047SPaolo Bonzini qemu_set_fd_handler2(sock, NULL, NULL, wait_for_connect, 758baacf047SPaolo Bonzini connect_state); 759baacf047SPaolo Bonzini return sock; 760baacf047SPaolo Bonzini } else if (rc >= 0) { 761baacf047SPaolo Bonzini /* non blocking socket immediate success, call callback */ 762baacf047SPaolo Bonzini if (callback != NULL) { 763baacf047SPaolo Bonzini callback(sock, opaque); 764baacf047SPaolo Bonzini } 765baacf047SPaolo Bonzini } 766baacf047SPaolo Bonzini 767baacf047SPaolo Bonzini if (rc < 0) { 768baacf047SPaolo Bonzini error_set_errno(errp, -rc, QERR_SOCKET_CONNECT_FAILED); 769baacf047SPaolo Bonzini close(sock); 770baacf047SPaolo Bonzini sock = -1; 771baacf047SPaolo Bonzini } 772baacf047SPaolo Bonzini 773baacf047SPaolo Bonzini g_free(connect_state); 774baacf047SPaolo Bonzini return sock; 775baacf047SPaolo Bonzini } 776baacf047SPaolo Bonzini 777baacf047SPaolo Bonzini #else 778baacf047SPaolo Bonzini 779baacf047SPaolo Bonzini int unix_listen_opts(QemuOpts *opts, Error **errp) 780baacf047SPaolo Bonzini { 781baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 782baacf047SPaolo Bonzini errno = ENOTSUP; 783baacf047SPaolo Bonzini return -1; 784baacf047SPaolo Bonzini } 785baacf047SPaolo Bonzini 786baacf047SPaolo Bonzini int unix_connect_opts(QemuOpts *opts, Error **errp, 787baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 788baacf047SPaolo Bonzini { 789baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 790baacf047SPaolo Bonzini errno = ENOTSUP; 791baacf047SPaolo Bonzini return -1; 792baacf047SPaolo Bonzini } 793baacf047SPaolo Bonzini #endif 794baacf047SPaolo Bonzini 795baacf047SPaolo Bonzini /* compatibility wrapper */ 796baacf047SPaolo Bonzini int unix_listen(const char *str, char *ostr, int olen, Error **errp) 797baacf047SPaolo Bonzini { 798baacf047SPaolo Bonzini QemuOpts *opts; 799baacf047SPaolo Bonzini char *path, *optstr; 800baacf047SPaolo Bonzini int sock, len; 801baacf047SPaolo Bonzini 802e62be888SKevin Wolf opts = qemu_opts_create_nofail(&socket_optslist); 803baacf047SPaolo Bonzini 804baacf047SPaolo Bonzini optstr = strchr(str, ','); 805baacf047SPaolo Bonzini if (optstr) { 806baacf047SPaolo Bonzini len = optstr - str; 807baacf047SPaolo Bonzini if (len) { 808baacf047SPaolo Bonzini path = g_malloc(len+1); 809baacf047SPaolo Bonzini snprintf(path, len+1, "%.*s", len, str); 810baacf047SPaolo Bonzini qemu_opt_set(opts, "path", path); 811baacf047SPaolo Bonzini g_free(path); 812baacf047SPaolo Bonzini } 813baacf047SPaolo Bonzini } else { 814baacf047SPaolo Bonzini qemu_opt_set(opts, "path", str); 815baacf047SPaolo Bonzini } 816baacf047SPaolo Bonzini 817baacf047SPaolo Bonzini sock = unix_listen_opts(opts, errp); 818baacf047SPaolo Bonzini 819baacf047SPaolo Bonzini if (sock != -1 && ostr) 820baacf047SPaolo Bonzini snprintf(ostr, olen, "%s%s", qemu_opt_get(opts, "path"), optstr ? optstr : ""); 821baacf047SPaolo Bonzini qemu_opts_del(opts); 822baacf047SPaolo Bonzini return sock; 823baacf047SPaolo Bonzini } 824baacf047SPaolo Bonzini 825baacf047SPaolo Bonzini int unix_connect(const char *path, Error **errp) 826baacf047SPaolo Bonzini { 827baacf047SPaolo Bonzini QemuOpts *opts; 828baacf047SPaolo Bonzini int sock; 829baacf047SPaolo Bonzini 830e62be888SKevin Wolf opts = qemu_opts_create_nofail(&socket_optslist); 831baacf047SPaolo Bonzini qemu_opt_set(opts, "path", path); 832baacf047SPaolo Bonzini sock = unix_connect_opts(opts, errp, NULL, NULL); 833baacf047SPaolo Bonzini qemu_opts_del(opts); 834baacf047SPaolo Bonzini return sock; 835baacf047SPaolo Bonzini } 836baacf047SPaolo Bonzini 837baacf047SPaolo Bonzini 838baacf047SPaolo Bonzini int unix_nonblocking_connect(const char *path, 839baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, 840baacf047SPaolo Bonzini void *opaque, Error **errp) 841baacf047SPaolo Bonzini { 842baacf047SPaolo Bonzini QemuOpts *opts; 843baacf047SPaolo Bonzini int sock = -1; 844baacf047SPaolo Bonzini 845baacf047SPaolo Bonzini g_assert(callback != NULL); 846baacf047SPaolo Bonzini 847e62be888SKevin Wolf opts = qemu_opts_create_nofail(&socket_optslist); 848baacf047SPaolo Bonzini qemu_opt_set(opts, "path", path); 849baacf047SPaolo Bonzini sock = unix_connect_opts(opts, errp, callback, opaque); 850baacf047SPaolo Bonzini qemu_opts_del(opts); 851baacf047SPaolo Bonzini return sock; 852baacf047SPaolo Bonzini } 853baacf047SPaolo Bonzini 854baacf047SPaolo Bonzini SocketAddress *socket_parse(const char *str, Error **errp) 855baacf047SPaolo Bonzini { 856baacf047SPaolo Bonzini SocketAddress *addr = NULL; 857baacf047SPaolo Bonzini 858baacf047SPaolo Bonzini addr = g_new(SocketAddress, 1); 859baacf047SPaolo Bonzini if (strstart(str, "unix:", NULL)) { 860baacf047SPaolo Bonzini if (str[5] == '\0') { 861312fd5f2SMarkus Armbruster error_setg(errp, "invalid Unix socket address"); 862baacf047SPaolo Bonzini goto fail; 863baacf047SPaolo Bonzini } else { 864baacf047SPaolo Bonzini addr->kind = SOCKET_ADDRESS_KIND_UNIX; 865baacf047SPaolo Bonzini addr->q_unix = g_new(UnixSocketAddress, 1); 866baacf047SPaolo Bonzini addr->q_unix->path = g_strdup(str + 5); 867baacf047SPaolo Bonzini } 868baacf047SPaolo Bonzini } else if (strstart(str, "fd:", NULL)) { 869baacf047SPaolo Bonzini if (str[3] == '\0') { 870312fd5f2SMarkus Armbruster error_setg(errp, "invalid file descriptor address"); 871baacf047SPaolo Bonzini goto fail; 872baacf047SPaolo Bonzini } else { 873baacf047SPaolo Bonzini addr->kind = SOCKET_ADDRESS_KIND_FD; 874baacf047SPaolo Bonzini addr->fd = g_new(String, 1); 875baacf047SPaolo Bonzini addr->fd->str = g_strdup(str + 3); 876baacf047SPaolo Bonzini } 877baacf047SPaolo Bonzini } else { 878baacf047SPaolo Bonzini addr->kind = SOCKET_ADDRESS_KIND_INET; 879baacf047SPaolo Bonzini addr->inet = g_new(InetSocketAddress, 1); 880baacf047SPaolo Bonzini addr->inet = inet_parse(str, errp); 881baacf047SPaolo Bonzini if (addr->inet == NULL) { 882baacf047SPaolo Bonzini goto fail; 883baacf047SPaolo Bonzini } 884baacf047SPaolo Bonzini } 885baacf047SPaolo Bonzini return addr; 886baacf047SPaolo Bonzini 887baacf047SPaolo Bonzini fail: 888baacf047SPaolo Bonzini qapi_free_SocketAddress(addr); 889baacf047SPaolo Bonzini return NULL; 890baacf047SPaolo Bonzini } 891baacf047SPaolo Bonzini 892baacf047SPaolo Bonzini int socket_connect(SocketAddress *addr, Error **errp, 893baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 894baacf047SPaolo Bonzini { 895baacf047SPaolo Bonzini QemuOpts *opts; 896baacf047SPaolo Bonzini int fd; 897baacf047SPaolo Bonzini 898e62be888SKevin Wolf opts = qemu_opts_create_nofail(&socket_optslist); 899baacf047SPaolo Bonzini switch (addr->kind) { 900baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_INET: 901baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr->inet); 902baacf047SPaolo Bonzini fd = inet_connect_opts(opts, errp, callback, opaque); 903baacf047SPaolo Bonzini break; 904baacf047SPaolo Bonzini 905baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_UNIX: 906baacf047SPaolo Bonzini qemu_opt_set(opts, "path", addr->q_unix->path); 907baacf047SPaolo Bonzini fd = unix_connect_opts(opts, errp, callback, opaque); 908baacf047SPaolo Bonzini break; 909baacf047SPaolo Bonzini 910baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_FD: 911baacf047SPaolo Bonzini fd = monitor_get_fd(cur_mon, addr->fd->str, errp); 912baacf047SPaolo Bonzini if (callback) { 913*1a751ebfSStefan Hajnoczi qemu_set_nonblock(fd); 914baacf047SPaolo Bonzini callback(fd, opaque); 915baacf047SPaolo Bonzini } 916baacf047SPaolo Bonzini break; 917baacf047SPaolo Bonzini 918baacf047SPaolo Bonzini default: 919baacf047SPaolo Bonzini abort(); 920baacf047SPaolo Bonzini } 921baacf047SPaolo Bonzini qemu_opts_del(opts); 922baacf047SPaolo Bonzini return fd; 923baacf047SPaolo Bonzini } 924baacf047SPaolo Bonzini 925baacf047SPaolo Bonzini int socket_listen(SocketAddress *addr, Error **errp) 926baacf047SPaolo Bonzini { 927baacf047SPaolo Bonzini QemuOpts *opts; 928baacf047SPaolo Bonzini int fd; 929baacf047SPaolo Bonzini 930e62be888SKevin Wolf opts = qemu_opts_create_nofail(&socket_optslist); 931baacf047SPaolo Bonzini switch (addr->kind) { 932baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_INET: 933baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr->inet); 934baacf047SPaolo Bonzini fd = inet_listen_opts(opts, 0, errp); 935baacf047SPaolo Bonzini break; 936baacf047SPaolo Bonzini 937baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_UNIX: 938baacf047SPaolo Bonzini qemu_opt_set(opts, "path", addr->q_unix->path); 939baacf047SPaolo Bonzini fd = unix_listen_opts(opts, errp); 940baacf047SPaolo Bonzini break; 941baacf047SPaolo Bonzini 942baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_FD: 943baacf047SPaolo Bonzini fd = monitor_get_fd(cur_mon, addr->fd->str, errp); 944baacf047SPaolo Bonzini break; 945baacf047SPaolo Bonzini 946baacf047SPaolo Bonzini default: 947baacf047SPaolo Bonzini abort(); 948baacf047SPaolo Bonzini } 949baacf047SPaolo Bonzini qemu_opts_del(opts); 950baacf047SPaolo Bonzini return fd; 951baacf047SPaolo Bonzini } 952baacf047SPaolo Bonzini 9533ecc059dSGerd Hoffmann int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) 9543ecc059dSGerd Hoffmann { 9553ecc059dSGerd Hoffmann QemuOpts *opts; 9563ecc059dSGerd Hoffmann int fd; 9573ecc059dSGerd Hoffmann 958e62be888SKevin Wolf opts = qemu_opts_create_nofail(&socket_optslist); 9593ecc059dSGerd Hoffmann switch (remote->kind) { 9603ecc059dSGerd Hoffmann case SOCKET_ADDRESS_KIND_INET: 9613ecc059dSGerd Hoffmann qemu_opt_set(opts, "host", remote->inet->host); 9623ecc059dSGerd Hoffmann qemu_opt_set(opts, "port", remote->inet->port); 9633ecc059dSGerd Hoffmann if (local) { 9643ecc059dSGerd Hoffmann qemu_opt_set(opts, "localaddr", local->inet->host); 9653ecc059dSGerd Hoffmann qemu_opt_set(opts, "localport", local->inet->port); 9663ecc059dSGerd Hoffmann } 9673ecc059dSGerd Hoffmann fd = inet_dgram_opts(opts, errp); 9683ecc059dSGerd Hoffmann break; 9693ecc059dSGerd Hoffmann 9703ecc059dSGerd Hoffmann default: 9713ecc059dSGerd Hoffmann error_setg(errp, "socket type unsupported for datagram"); 9723ecc059dSGerd Hoffmann return -1; 9733ecc059dSGerd Hoffmann } 9743ecc059dSGerd Hoffmann qemu_opts_del(opts); 9753ecc059dSGerd Hoffmann return fd; 9763ecc059dSGerd Hoffmann } 9773ecc059dSGerd Hoffmann 978baacf047SPaolo Bonzini #ifdef _WIN32 979baacf047SPaolo Bonzini static void socket_cleanup(void) 980baacf047SPaolo Bonzini { 981baacf047SPaolo Bonzini WSACleanup(); 982baacf047SPaolo Bonzini } 983baacf047SPaolo Bonzini #endif 984baacf047SPaolo Bonzini 985baacf047SPaolo Bonzini int socket_init(void) 986baacf047SPaolo Bonzini { 987baacf047SPaolo Bonzini #ifdef _WIN32 988baacf047SPaolo Bonzini WSADATA Data; 989baacf047SPaolo Bonzini int ret, err; 990baacf047SPaolo Bonzini 991baacf047SPaolo Bonzini ret = WSAStartup(MAKEWORD(2,2), &Data); 992baacf047SPaolo Bonzini if (ret != 0) { 993baacf047SPaolo Bonzini err = WSAGetLastError(); 994baacf047SPaolo Bonzini fprintf(stderr, "WSAStartup: %d\n", err); 995baacf047SPaolo Bonzini return -1; 996baacf047SPaolo Bonzini } 997baacf047SPaolo Bonzini atexit(socket_cleanup); 998baacf047SPaolo Bonzini #endif 999baacf047SPaolo Bonzini return 0; 1000baacf047SPaolo Bonzini } 1001