1baacf047SPaolo Bonzini /* 2baacf047SPaolo Bonzini * inet and unix socket functions for qemu 3baacf047SPaolo Bonzini * 4baacf047SPaolo Bonzini * (c) 2008 Gerd Hoffmann <kraxel@redhat.com> 5baacf047SPaolo Bonzini * 6baacf047SPaolo Bonzini * This program is free software; you can redistribute it and/or modify 7baacf047SPaolo Bonzini * it under the terms of the GNU General Public License as published by 8baacf047SPaolo Bonzini * the Free Software Foundation; under version 2 of the License. 9baacf047SPaolo Bonzini * 10baacf047SPaolo Bonzini * This program is distributed in the hope that it will be useful, 11baacf047SPaolo Bonzini * but WITHOUT ANY WARRANTY; without even the implied warranty of 12baacf047SPaolo Bonzini * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13baacf047SPaolo Bonzini * GNU General Public License for more details. 14baacf047SPaolo Bonzini * 15baacf047SPaolo Bonzini * Contributions after 2012-01-13 are licensed under the terms of the 16baacf047SPaolo Bonzini * GNU GPL, version 2 or (at your option) any later version. 17baacf047SPaolo Bonzini */ 18baacf047SPaolo Bonzini #include <stdio.h> 19baacf047SPaolo Bonzini #include <stdlib.h> 20baacf047SPaolo Bonzini #include <string.h> 21baacf047SPaolo Bonzini #include <ctype.h> 22baacf047SPaolo Bonzini #include <errno.h> 23baacf047SPaolo Bonzini #include <unistd.h> 24baacf047SPaolo Bonzini 25baacf047SPaolo Bonzini #include "monitor/monitor.h" 26baacf047SPaolo Bonzini #include "qemu/sockets.h" 27baacf047SPaolo Bonzini #include "qemu/main-loop.h" 28baacf047SPaolo Bonzini 29baacf047SPaolo Bonzini #ifndef AI_ADDRCONFIG 30baacf047SPaolo Bonzini # define AI_ADDRCONFIG 0 31baacf047SPaolo Bonzini #endif 32baacf047SPaolo Bonzini 33e62be888SKevin Wolf /* used temporarily until all users are converted to QemuOpts */ 34e62be888SKevin Wolf QemuOptsList socket_optslist = { 35e62be888SKevin Wolf .name = "socket", 36e62be888SKevin Wolf .head = QTAILQ_HEAD_INITIALIZER(socket_optslist.head), 37baacf047SPaolo Bonzini .desc = { 38baacf047SPaolo Bonzini { 39baacf047SPaolo Bonzini .name = "path", 40baacf047SPaolo Bonzini .type = QEMU_OPT_STRING, 41baacf047SPaolo Bonzini },{ 42baacf047SPaolo Bonzini .name = "host", 43baacf047SPaolo Bonzini .type = QEMU_OPT_STRING, 44baacf047SPaolo Bonzini },{ 45baacf047SPaolo Bonzini .name = "port", 46baacf047SPaolo Bonzini .type = QEMU_OPT_STRING, 47baacf047SPaolo Bonzini },{ 48baacf047SPaolo Bonzini .name = "to", 49baacf047SPaolo Bonzini .type = QEMU_OPT_NUMBER, 50baacf047SPaolo Bonzini },{ 51baacf047SPaolo Bonzini .name = "ipv4", 52baacf047SPaolo Bonzini .type = QEMU_OPT_BOOL, 53baacf047SPaolo Bonzini },{ 54baacf047SPaolo Bonzini .name = "ipv6", 55baacf047SPaolo Bonzini .type = QEMU_OPT_BOOL, 56baacf047SPaolo Bonzini }, 57baacf047SPaolo Bonzini { /* end if list */ } 58baacf047SPaolo Bonzini }, 59baacf047SPaolo Bonzini }; 60baacf047SPaolo Bonzini 61baacf047SPaolo Bonzini static int inet_getport(struct addrinfo *e) 62baacf047SPaolo Bonzini { 63baacf047SPaolo Bonzini struct sockaddr_in *i4; 64baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 65baacf047SPaolo Bonzini 66baacf047SPaolo Bonzini switch (e->ai_family) { 67baacf047SPaolo Bonzini case PF_INET6: 68baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 69baacf047SPaolo Bonzini return ntohs(i6->sin6_port); 70baacf047SPaolo Bonzini case PF_INET: 71baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 72baacf047SPaolo Bonzini return ntohs(i4->sin_port); 73baacf047SPaolo Bonzini default: 74baacf047SPaolo Bonzini return 0; 75baacf047SPaolo Bonzini } 76baacf047SPaolo Bonzini } 77baacf047SPaolo Bonzini 78baacf047SPaolo Bonzini static void inet_setport(struct addrinfo *e, int port) 79baacf047SPaolo Bonzini { 80baacf047SPaolo Bonzini struct sockaddr_in *i4; 81baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 82baacf047SPaolo Bonzini 83baacf047SPaolo Bonzini switch (e->ai_family) { 84baacf047SPaolo Bonzini case PF_INET6: 85baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 86baacf047SPaolo Bonzini i6->sin6_port = htons(port); 87baacf047SPaolo Bonzini break; 88baacf047SPaolo Bonzini case PF_INET: 89baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 90baacf047SPaolo Bonzini i4->sin_port = htons(port); 91baacf047SPaolo Bonzini break; 92baacf047SPaolo Bonzini } 93baacf047SPaolo Bonzini } 94baacf047SPaolo Bonzini 95baacf047SPaolo Bonzini const char *inet_strfamily(int family) 96baacf047SPaolo Bonzini { 97baacf047SPaolo Bonzini switch (family) { 98baacf047SPaolo Bonzini case PF_INET6: return "ipv6"; 99baacf047SPaolo Bonzini case PF_INET: return "ipv4"; 100baacf047SPaolo Bonzini case PF_UNIX: return "unix"; 101baacf047SPaolo Bonzini } 102baacf047SPaolo Bonzini return "unknown"; 103baacf047SPaolo Bonzini } 104baacf047SPaolo Bonzini 105baacf047SPaolo Bonzini int inet_listen_opts(QemuOpts *opts, int port_offset, Error **errp) 106baacf047SPaolo Bonzini { 107baacf047SPaolo Bonzini struct addrinfo ai,*res,*e; 108baacf047SPaolo Bonzini const char *addr; 109baacf047SPaolo Bonzini char port[33]; 110baacf047SPaolo Bonzini char uaddr[INET6_ADDRSTRLEN+1]; 111baacf047SPaolo Bonzini char uport[33]; 112baacf047SPaolo Bonzini int slisten, rc, to, port_min, port_max, p; 113baacf047SPaolo Bonzini 114baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 115baacf047SPaolo Bonzini ai.ai_flags = AI_PASSIVE | AI_ADDRCONFIG; 116baacf047SPaolo Bonzini ai.ai_family = PF_UNSPEC; 117baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 118baacf047SPaolo Bonzini 119baacf047SPaolo Bonzini if ((qemu_opt_get(opts, "host") == NULL) || 120baacf047SPaolo Bonzini (qemu_opt_get(opts, "port") == NULL)) { 121baacf047SPaolo Bonzini error_setg(errp, "host and/or port not specified"); 122baacf047SPaolo Bonzini return -1; 123baacf047SPaolo Bonzini } 124baacf047SPaolo Bonzini pstrcpy(port, sizeof(port), qemu_opt_get(opts, "port")); 125baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "host"); 126baacf047SPaolo Bonzini 127baacf047SPaolo Bonzini to = qemu_opt_get_number(opts, "to", 0); 128baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv4", 0)) 129baacf047SPaolo Bonzini ai.ai_family = PF_INET; 130baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) 131baacf047SPaolo Bonzini ai.ai_family = PF_INET6; 132baacf047SPaolo Bonzini 133baacf047SPaolo Bonzini /* lookup */ 134*8bc89127SGerd Hoffmann if (port_offset) { 135*8bc89127SGerd Hoffmann unsigned long long baseport; 136*8bc89127SGerd Hoffmann if (parse_uint_full(port, &baseport, 10) < 0) { 137*8bc89127SGerd Hoffmann error_setg(errp, "can't convert to a number: %s", port); 138*8bc89127SGerd Hoffmann return -1; 139*8bc89127SGerd Hoffmann } 140*8bc89127SGerd Hoffmann if (baseport > 65535 || 141*8bc89127SGerd Hoffmann baseport + port_offset > 65535) { 142*8bc89127SGerd Hoffmann error_setg(errp, "port %s out of range", port); 143*8bc89127SGerd Hoffmann return -1; 144*8bc89127SGerd Hoffmann } 145*8bc89127SGerd Hoffmann snprintf(port, sizeof(port), "%d", (int)baseport + port_offset); 146*8bc89127SGerd Hoffmann } 147baacf047SPaolo Bonzini rc = getaddrinfo(strlen(addr) ? addr : NULL, port, &ai, &res); 148baacf047SPaolo Bonzini if (rc != 0) { 149baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 150baacf047SPaolo Bonzini gai_strerror(rc)); 151baacf047SPaolo Bonzini return -1; 152baacf047SPaolo Bonzini } 153baacf047SPaolo Bonzini 154baacf047SPaolo Bonzini /* create socket + bind */ 155baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 156baacf047SPaolo Bonzini getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, 157baacf047SPaolo Bonzini uaddr,INET6_ADDRSTRLEN,uport,32, 158baacf047SPaolo Bonzini NI_NUMERICHOST | NI_NUMERICSERV); 159baacf047SPaolo Bonzini slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); 160baacf047SPaolo Bonzini if (slisten < 0) { 161baacf047SPaolo Bonzini if (!e->ai_next) { 162baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); 163baacf047SPaolo Bonzini } 164baacf047SPaolo Bonzini continue; 165baacf047SPaolo Bonzini } 166baacf047SPaolo Bonzini 16704fd1c78SSebastian Ottlik socket_set_fast_reuse(slisten); 168baacf047SPaolo Bonzini #ifdef IPV6_V6ONLY 169baacf047SPaolo Bonzini if (e->ai_family == PF_INET6) { 170baacf047SPaolo Bonzini /* listen on both ipv4 and ipv6 */ 171f9b5426fSPeter Maydell const int off = 0; 1729957fc7fSStefan Weil qemu_setsockopt(slisten, IPPROTO_IPV6, IPV6_V6ONLY, &off, 173baacf047SPaolo Bonzini sizeof(off)); 174baacf047SPaolo Bonzini } 175baacf047SPaolo Bonzini #endif 176baacf047SPaolo Bonzini 177baacf047SPaolo Bonzini port_min = inet_getport(e); 178baacf047SPaolo Bonzini port_max = to ? to + port_offset : port_min; 179baacf047SPaolo Bonzini for (p = port_min; p <= port_max; p++) { 180baacf047SPaolo Bonzini inet_setport(e, p); 181baacf047SPaolo Bonzini if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) { 182baacf047SPaolo Bonzini goto listen; 183baacf047SPaolo Bonzini } 184baacf047SPaolo Bonzini if (p == port_max) { 185baacf047SPaolo Bonzini if (!e->ai_next) { 186baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_BIND_FAILED); 187baacf047SPaolo Bonzini } 188baacf047SPaolo Bonzini } 189baacf047SPaolo Bonzini } 190baacf047SPaolo Bonzini closesocket(slisten); 191baacf047SPaolo Bonzini } 192baacf047SPaolo Bonzini freeaddrinfo(res); 193baacf047SPaolo Bonzini return -1; 194baacf047SPaolo Bonzini 195baacf047SPaolo Bonzini listen: 196baacf047SPaolo Bonzini if (listen(slisten,1) != 0) { 197baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_LISTEN_FAILED); 198baacf047SPaolo Bonzini closesocket(slisten); 199baacf047SPaolo Bonzini freeaddrinfo(res); 200baacf047SPaolo Bonzini return -1; 201baacf047SPaolo Bonzini } 202baacf047SPaolo Bonzini snprintf(uport, sizeof(uport), "%d", inet_getport(e) - port_offset); 203baacf047SPaolo Bonzini qemu_opt_set(opts, "host", uaddr); 204baacf047SPaolo Bonzini qemu_opt_set(opts, "port", uport); 205baacf047SPaolo Bonzini qemu_opt_set(opts, "ipv6", (e->ai_family == PF_INET6) ? "on" : "off"); 206baacf047SPaolo Bonzini qemu_opt_set(opts, "ipv4", (e->ai_family != PF_INET6) ? "on" : "off"); 207baacf047SPaolo Bonzini freeaddrinfo(res); 208baacf047SPaolo Bonzini return slisten; 209baacf047SPaolo Bonzini } 210baacf047SPaolo Bonzini 211baacf047SPaolo Bonzini #ifdef _WIN32 212baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 213baacf047SPaolo Bonzini ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) 214baacf047SPaolo Bonzini #else 215baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 216baacf047SPaolo Bonzini ((rc) == -EINPROGRESS) 217baacf047SPaolo Bonzini #endif 218baacf047SPaolo Bonzini 219baacf047SPaolo Bonzini /* Struct to store connect state for non blocking connect */ 220baacf047SPaolo Bonzini typedef struct ConnectState { 221baacf047SPaolo Bonzini int fd; 222baacf047SPaolo Bonzini struct addrinfo *addr_list; 223baacf047SPaolo Bonzini struct addrinfo *current_addr; 224baacf047SPaolo Bonzini NonBlockingConnectHandler *callback; 225baacf047SPaolo Bonzini void *opaque; 226baacf047SPaolo Bonzini } ConnectState; 227baacf047SPaolo Bonzini 228baacf047SPaolo Bonzini static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, 229baacf047SPaolo Bonzini ConnectState *connect_state, Error **errp); 230baacf047SPaolo Bonzini 231baacf047SPaolo Bonzini static void wait_for_connect(void *opaque) 232baacf047SPaolo Bonzini { 233baacf047SPaolo Bonzini ConnectState *s = opaque; 234baacf047SPaolo Bonzini int val = 0, rc = 0; 235baacf047SPaolo Bonzini socklen_t valsize = sizeof(val); 236baacf047SPaolo Bonzini bool in_progress; 237baacf047SPaolo Bonzini 238baacf047SPaolo Bonzini qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL); 239baacf047SPaolo Bonzini 240baacf047SPaolo Bonzini do { 2419957fc7fSStefan Weil rc = qemu_getsockopt(s->fd, SOL_SOCKET, SO_ERROR, &val, &valsize); 242baacf047SPaolo Bonzini } while (rc == -1 && socket_error() == EINTR); 243baacf047SPaolo Bonzini 244baacf047SPaolo Bonzini /* update rc to contain error */ 245baacf047SPaolo Bonzini if (!rc && val) { 246baacf047SPaolo Bonzini rc = -1; 247baacf047SPaolo Bonzini } 248baacf047SPaolo Bonzini 249baacf047SPaolo Bonzini /* connect error */ 250baacf047SPaolo Bonzini if (rc < 0) { 251baacf047SPaolo Bonzini closesocket(s->fd); 252baacf047SPaolo Bonzini s->fd = rc; 253baacf047SPaolo Bonzini } 254baacf047SPaolo Bonzini 255baacf047SPaolo Bonzini /* try to connect to the next address on the list */ 256baacf047SPaolo Bonzini if (s->current_addr) { 257baacf047SPaolo Bonzini while (s->current_addr->ai_next != NULL && s->fd < 0) { 258baacf047SPaolo Bonzini s->current_addr = s->current_addr->ai_next; 259baacf047SPaolo Bonzini s->fd = inet_connect_addr(s->current_addr, &in_progress, s, NULL); 260baacf047SPaolo Bonzini /* connect in progress */ 261baacf047SPaolo Bonzini if (in_progress) { 262baacf047SPaolo Bonzini return; 263baacf047SPaolo Bonzini } 264baacf047SPaolo Bonzini } 265baacf047SPaolo Bonzini 266baacf047SPaolo Bonzini freeaddrinfo(s->addr_list); 267baacf047SPaolo Bonzini } 268baacf047SPaolo Bonzini 269baacf047SPaolo Bonzini if (s->callback) { 270baacf047SPaolo Bonzini s->callback(s->fd, s->opaque); 271baacf047SPaolo Bonzini } 272baacf047SPaolo Bonzini g_free(s); 273baacf047SPaolo Bonzini } 274baacf047SPaolo Bonzini 275baacf047SPaolo Bonzini static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, 276baacf047SPaolo Bonzini ConnectState *connect_state, Error **errp) 277baacf047SPaolo Bonzini { 278baacf047SPaolo Bonzini int sock, rc; 279baacf047SPaolo Bonzini 280baacf047SPaolo Bonzini *in_progress = false; 281baacf047SPaolo Bonzini 282baacf047SPaolo Bonzini sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); 283baacf047SPaolo Bonzini if (sock < 0) { 284baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); 285baacf047SPaolo Bonzini return -1; 286baacf047SPaolo Bonzini } 28704fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 288baacf047SPaolo Bonzini if (connect_state != NULL) { 289f9e8caccSStefan Hajnoczi qemu_set_nonblock(sock); 290baacf047SPaolo Bonzini } 291baacf047SPaolo Bonzini /* connect to peer */ 292baacf047SPaolo Bonzini do { 293baacf047SPaolo Bonzini rc = 0; 294baacf047SPaolo Bonzini if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { 295baacf047SPaolo Bonzini rc = -socket_error(); 296baacf047SPaolo Bonzini } 297baacf047SPaolo Bonzini } while (rc == -EINTR); 298baacf047SPaolo Bonzini 299baacf047SPaolo Bonzini if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { 300baacf047SPaolo Bonzini connect_state->fd = sock; 301baacf047SPaolo Bonzini qemu_set_fd_handler2(sock, NULL, NULL, wait_for_connect, 302baacf047SPaolo Bonzini connect_state); 303baacf047SPaolo Bonzini *in_progress = true; 304baacf047SPaolo Bonzini } else if (rc < 0) { 305baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CONNECT_FAILED); 306baacf047SPaolo Bonzini closesocket(sock); 307baacf047SPaolo Bonzini return -1; 308baacf047SPaolo Bonzini } 309baacf047SPaolo Bonzini return sock; 310baacf047SPaolo Bonzini } 311baacf047SPaolo Bonzini 312baacf047SPaolo Bonzini static struct addrinfo *inet_parse_connect_opts(QemuOpts *opts, Error **errp) 313baacf047SPaolo Bonzini { 314baacf047SPaolo Bonzini struct addrinfo ai, *res; 315baacf047SPaolo Bonzini int rc; 316baacf047SPaolo Bonzini const char *addr; 317baacf047SPaolo Bonzini const char *port; 318baacf047SPaolo Bonzini 319baacf047SPaolo Bonzini memset(&ai, 0, sizeof(ai)); 320baacf047SPaolo Bonzini 321baacf047SPaolo Bonzini ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; 322baacf047SPaolo Bonzini ai.ai_family = PF_UNSPEC; 323baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 324baacf047SPaolo Bonzini 325baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "host"); 326baacf047SPaolo Bonzini port = qemu_opt_get(opts, "port"); 327baacf047SPaolo Bonzini if (addr == NULL || port == NULL) { 328baacf047SPaolo Bonzini error_setg(errp, "host and/or port not specified"); 329baacf047SPaolo Bonzini return NULL; 330baacf047SPaolo Bonzini } 331baacf047SPaolo Bonzini 332baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv4", 0)) { 333baacf047SPaolo Bonzini ai.ai_family = PF_INET; 334baacf047SPaolo Bonzini } 335baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) { 336baacf047SPaolo Bonzini ai.ai_family = PF_INET6; 337baacf047SPaolo Bonzini } 338baacf047SPaolo Bonzini 339baacf047SPaolo Bonzini /* lookup */ 340baacf047SPaolo Bonzini rc = getaddrinfo(addr, port, &ai, &res); 341baacf047SPaolo Bonzini if (rc != 0) { 342baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 343baacf047SPaolo Bonzini gai_strerror(rc)); 344baacf047SPaolo Bonzini return NULL; 345baacf047SPaolo Bonzini } 346baacf047SPaolo Bonzini return res; 347baacf047SPaolo Bonzini } 348baacf047SPaolo Bonzini 349baacf047SPaolo Bonzini /** 350baacf047SPaolo Bonzini * Create a socket and connect it to an address. 351baacf047SPaolo Bonzini * 352baacf047SPaolo Bonzini * @opts: QEMU options, recognized parameters strings "host" and "port", 353baacf047SPaolo Bonzini * bools "ipv4" and "ipv6". 354baacf047SPaolo Bonzini * @errp: set on error 355baacf047SPaolo Bonzini * @callback: callback function for non-blocking connect 356baacf047SPaolo Bonzini * @opaque: opaque for callback function 357baacf047SPaolo Bonzini * 358baacf047SPaolo Bonzini * Returns: -1 on error, file descriptor on success. 359baacf047SPaolo Bonzini * 360baacf047SPaolo Bonzini * If @callback is non-null, the connect is non-blocking. If this 361baacf047SPaolo Bonzini * function succeeds, callback will be called when the connection 362baacf047SPaolo Bonzini * completes, with the file descriptor on success, or -1 on error. 363baacf047SPaolo Bonzini */ 364baacf047SPaolo Bonzini int inet_connect_opts(QemuOpts *opts, Error **errp, 365baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 366baacf047SPaolo Bonzini { 3673f9286b7SMarkus Armbruster Error *local_err = NULL; 368baacf047SPaolo Bonzini struct addrinfo *res, *e; 369baacf047SPaolo Bonzini int sock = -1; 370baacf047SPaolo Bonzini bool in_progress; 371baacf047SPaolo Bonzini ConnectState *connect_state = NULL; 372baacf047SPaolo Bonzini 373baacf047SPaolo Bonzini res = inet_parse_connect_opts(opts, errp); 374baacf047SPaolo Bonzini if (!res) { 375baacf047SPaolo Bonzini return -1; 376baacf047SPaolo Bonzini } 377baacf047SPaolo Bonzini 378baacf047SPaolo Bonzini if (callback != NULL) { 379baacf047SPaolo Bonzini connect_state = g_malloc0(sizeof(*connect_state)); 380baacf047SPaolo Bonzini connect_state->addr_list = res; 381baacf047SPaolo Bonzini connect_state->callback = callback; 382baacf047SPaolo Bonzini connect_state->opaque = opaque; 383baacf047SPaolo Bonzini } 384baacf047SPaolo Bonzini 385baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 3863f9286b7SMarkus Armbruster error_free(local_err); 3873f9286b7SMarkus Armbruster local_err = NULL; 388baacf047SPaolo Bonzini if (connect_state != NULL) { 389baacf047SPaolo Bonzini connect_state->current_addr = e; 390baacf047SPaolo Bonzini } 3913f9286b7SMarkus Armbruster sock = inet_connect_addr(e, &in_progress, connect_state, &local_err); 3923f9286b7SMarkus Armbruster if (sock >= 0) { 393baacf047SPaolo Bonzini break; 394baacf047SPaolo Bonzini } 395baacf047SPaolo Bonzini } 3963f9286b7SMarkus Armbruster 3973f9286b7SMarkus Armbruster if (sock < 0) { 3983f9286b7SMarkus Armbruster error_propagate(errp, local_err); 3993f9286b7SMarkus Armbruster } else if (in_progress) { 4003f9286b7SMarkus Armbruster /* wait_for_connect() will do the rest */ 4013f9286b7SMarkus Armbruster return sock; 4023f9286b7SMarkus Armbruster } else { 4033f9286b7SMarkus Armbruster if (callback) { 4043f9286b7SMarkus Armbruster callback(sock, opaque); 4053f9286b7SMarkus Armbruster } 4063f9286b7SMarkus Armbruster } 407baacf047SPaolo Bonzini g_free(connect_state); 408baacf047SPaolo Bonzini freeaddrinfo(res); 409baacf047SPaolo Bonzini return sock; 410baacf047SPaolo Bonzini } 411baacf047SPaolo Bonzini 412baacf047SPaolo Bonzini int inet_dgram_opts(QemuOpts *opts, Error **errp) 413baacf047SPaolo Bonzini { 414baacf047SPaolo Bonzini struct addrinfo ai, *peer = NULL, *local = NULL; 415baacf047SPaolo Bonzini const char *addr; 416baacf047SPaolo Bonzini const char *port; 417baacf047SPaolo Bonzini int sock = -1, rc; 418baacf047SPaolo Bonzini 419baacf047SPaolo Bonzini /* lookup peer addr */ 420baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 421baacf047SPaolo Bonzini ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; 422baacf047SPaolo Bonzini ai.ai_family = PF_UNSPEC; 423baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 424baacf047SPaolo Bonzini 425baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "host"); 426baacf047SPaolo Bonzini port = qemu_opt_get(opts, "port"); 427baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 428baacf047SPaolo Bonzini addr = "localhost"; 429baacf047SPaolo Bonzini } 430baacf047SPaolo Bonzini if (port == NULL || strlen(port) == 0) { 431baacf047SPaolo Bonzini error_setg(errp, "remote port not specified"); 432baacf047SPaolo Bonzini return -1; 433baacf047SPaolo Bonzini } 434baacf047SPaolo Bonzini 435baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv4", 0)) 436baacf047SPaolo Bonzini ai.ai_family = PF_INET; 437baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) 438baacf047SPaolo Bonzini ai.ai_family = PF_INET6; 439baacf047SPaolo Bonzini 440baacf047SPaolo Bonzini if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) { 441baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 442baacf047SPaolo Bonzini gai_strerror(rc)); 443baacf047SPaolo Bonzini return -1; 444baacf047SPaolo Bonzini } 445baacf047SPaolo Bonzini 446baacf047SPaolo Bonzini /* lookup local addr */ 447baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 448baacf047SPaolo Bonzini ai.ai_flags = AI_PASSIVE; 449baacf047SPaolo Bonzini ai.ai_family = peer->ai_family; 450baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 451baacf047SPaolo Bonzini 452baacf047SPaolo Bonzini addr = qemu_opt_get(opts, "localaddr"); 453baacf047SPaolo Bonzini port = qemu_opt_get(opts, "localport"); 454baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 455baacf047SPaolo Bonzini addr = NULL; 456baacf047SPaolo Bonzini } 457baacf047SPaolo Bonzini if (!port || strlen(port) == 0) 458baacf047SPaolo Bonzini port = "0"; 459baacf047SPaolo Bonzini 460baacf047SPaolo Bonzini if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) { 461baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 462baacf047SPaolo Bonzini gai_strerror(rc)); 463baacf047SPaolo Bonzini goto err; 464baacf047SPaolo Bonzini } 465baacf047SPaolo Bonzini 466baacf047SPaolo Bonzini /* create socket */ 467baacf047SPaolo Bonzini sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); 468baacf047SPaolo Bonzini if (sock < 0) { 469baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); 470baacf047SPaolo Bonzini goto err; 471baacf047SPaolo Bonzini } 47204fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 473baacf047SPaolo Bonzini 474baacf047SPaolo Bonzini /* bind socket */ 475baacf047SPaolo Bonzini if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { 476baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_BIND_FAILED); 477baacf047SPaolo Bonzini goto err; 478baacf047SPaolo Bonzini } 479baacf047SPaolo Bonzini 480baacf047SPaolo Bonzini /* connect to peer */ 481baacf047SPaolo Bonzini if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { 482baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CONNECT_FAILED); 483baacf047SPaolo Bonzini goto err; 484baacf047SPaolo Bonzini } 485baacf047SPaolo Bonzini 486baacf047SPaolo Bonzini freeaddrinfo(local); 487baacf047SPaolo Bonzini freeaddrinfo(peer); 488baacf047SPaolo Bonzini return sock; 489baacf047SPaolo Bonzini 490baacf047SPaolo Bonzini err: 491baacf047SPaolo Bonzini if (-1 != sock) 492baacf047SPaolo Bonzini closesocket(sock); 493baacf047SPaolo Bonzini if (local) 494baacf047SPaolo Bonzini freeaddrinfo(local); 495baacf047SPaolo Bonzini if (peer) 496baacf047SPaolo Bonzini freeaddrinfo(peer); 497baacf047SPaolo Bonzini return -1; 498baacf047SPaolo Bonzini } 499baacf047SPaolo Bonzini 500baacf047SPaolo Bonzini /* compatibility wrapper */ 501f17c90beSKevin Wolf InetSocketAddress *inet_parse(const char *str, Error **errp) 502baacf047SPaolo Bonzini { 503baacf047SPaolo Bonzini InetSocketAddress *addr; 504baacf047SPaolo Bonzini const char *optstr, *h; 505baacf047SPaolo Bonzini char host[64]; 506baacf047SPaolo Bonzini char port[33]; 507baacf047SPaolo Bonzini int to; 508baacf047SPaolo Bonzini int pos; 509baacf047SPaolo Bonzini 510baacf047SPaolo Bonzini addr = g_new0(InetSocketAddress, 1); 511baacf047SPaolo Bonzini 512baacf047SPaolo Bonzini /* parse address */ 513baacf047SPaolo Bonzini if (str[0] == ':') { 514baacf047SPaolo Bonzini /* no host given */ 515baacf047SPaolo Bonzini host[0] = '\0'; 516baacf047SPaolo Bonzini if (1 != sscanf(str, ":%32[^,]%n", port, &pos)) { 517baacf047SPaolo Bonzini error_setg(errp, "error parsing port in address '%s'", str); 518baacf047SPaolo Bonzini goto fail; 519baacf047SPaolo Bonzini } 520baacf047SPaolo Bonzini } else if (str[0] == '[') { 521baacf047SPaolo Bonzini /* IPv6 addr */ 522baacf047SPaolo Bonzini if (2 != sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos)) { 523baacf047SPaolo Bonzini error_setg(errp, "error parsing IPv6 address '%s'", str); 524baacf047SPaolo Bonzini goto fail; 525baacf047SPaolo Bonzini } 526baacf047SPaolo Bonzini addr->ipv6 = addr->has_ipv6 = true; 527baacf047SPaolo Bonzini } else { 528391b7b97SJán Tomko /* hostname or IPv4 addr */ 529baacf047SPaolo Bonzini if (2 != sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos)) { 530baacf047SPaolo Bonzini error_setg(errp, "error parsing address '%s'", str); 531baacf047SPaolo Bonzini goto fail; 532baacf047SPaolo Bonzini } 533391b7b97SJán Tomko if (host[strspn(host, "0123456789.")] == '\0') { 534391b7b97SJán Tomko addr->ipv4 = addr->has_ipv4 = true; 535391b7b97SJán Tomko } 536baacf047SPaolo Bonzini } 537baacf047SPaolo Bonzini 538baacf047SPaolo Bonzini addr->host = g_strdup(host); 539baacf047SPaolo Bonzini addr->port = g_strdup(port); 540baacf047SPaolo Bonzini 541baacf047SPaolo Bonzini /* parse options */ 542baacf047SPaolo Bonzini optstr = str + pos; 543baacf047SPaolo Bonzini h = strstr(optstr, ",to="); 544baacf047SPaolo Bonzini if (h) { 545baacf047SPaolo Bonzini h += 4; 546baacf047SPaolo Bonzini if (sscanf(h, "%d%n", &to, &pos) != 1 || 547baacf047SPaolo Bonzini (h[pos] != '\0' && h[pos] != ',')) { 548baacf047SPaolo Bonzini error_setg(errp, "error parsing to= argument"); 549baacf047SPaolo Bonzini goto fail; 550baacf047SPaolo Bonzini } 551baacf047SPaolo Bonzini addr->has_to = true; 552baacf047SPaolo Bonzini addr->to = to; 553baacf047SPaolo Bonzini } 554baacf047SPaolo Bonzini if (strstr(optstr, ",ipv4")) { 555baacf047SPaolo Bonzini addr->ipv4 = addr->has_ipv4 = true; 556baacf047SPaolo Bonzini } 557baacf047SPaolo Bonzini if (strstr(optstr, ",ipv6")) { 558baacf047SPaolo Bonzini addr->ipv6 = addr->has_ipv6 = true; 559baacf047SPaolo Bonzini } 560baacf047SPaolo Bonzini return addr; 561baacf047SPaolo Bonzini 562baacf047SPaolo Bonzini fail: 563baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 564baacf047SPaolo Bonzini return NULL; 565baacf047SPaolo Bonzini } 566baacf047SPaolo Bonzini 567f17c90beSKevin Wolf static void inet_addr_to_opts(QemuOpts *opts, const InetSocketAddress *addr) 568baacf047SPaolo Bonzini { 569baacf047SPaolo Bonzini bool ipv4 = addr->ipv4 || !addr->has_ipv4; 570baacf047SPaolo Bonzini bool ipv6 = addr->ipv6 || !addr->has_ipv6; 571baacf047SPaolo Bonzini 572baacf047SPaolo Bonzini if (!ipv4 || !ipv6) { 573baacf047SPaolo Bonzini qemu_opt_set_bool(opts, "ipv4", ipv4); 574baacf047SPaolo Bonzini qemu_opt_set_bool(opts, "ipv6", ipv6); 575baacf047SPaolo Bonzini } 576baacf047SPaolo Bonzini if (addr->has_to) { 577baacf047SPaolo Bonzini char to[20]; 578baacf047SPaolo Bonzini snprintf(to, sizeof(to), "%d", addr->to); 579baacf047SPaolo Bonzini qemu_opt_set(opts, "to", to); 580baacf047SPaolo Bonzini } 581baacf047SPaolo Bonzini qemu_opt_set(opts, "host", addr->host); 582baacf047SPaolo Bonzini qemu_opt_set(opts, "port", addr->port); 583baacf047SPaolo Bonzini } 584baacf047SPaolo Bonzini 585baacf047SPaolo Bonzini int inet_listen(const char *str, char *ostr, int olen, 586baacf047SPaolo Bonzini int socktype, int port_offset, Error **errp) 587baacf047SPaolo Bonzini { 588baacf047SPaolo Bonzini QemuOpts *opts; 589baacf047SPaolo Bonzini char *optstr; 590baacf047SPaolo Bonzini int sock = -1; 591baacf047SPaolo Bonzini InetSocketAddress *addr; 592baacf047SPaolo Bonzini 593baacf047SPaolo Bonzini addr = inet_parse(str, errp); 594baacf047SPaolo Bonzini if (addr != NULL) { 59587ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 596baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr); 597baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 598baacf047SPaolo Bonzini sock = inet_listen_opts(opts, port_offset, errp); 599baacf047SPaolo Bonzini if (sock != -1 && ostr) { 600baacf047SPaolo Bonzini optstr = strchr(str, ','); 601baacf047SPaolo Bonzini if (qemu_opt_get_bool(opts, "ipv6", 0)) { 602baacf047SPaolo Bonzini snprintf(ostr, olen, "[%s]:%s%s", 603baacf047SPaolo Bonzini qemu_opt_get(opts, "host"), 604baacf047SPaolo Bonzini qemu_opt_get(opts, "port"), 605baacf047SPaolo Bonzini optstr ? optstr : ""); 606baacf047SPaolo Bonzini } else { 607baacf047SPaolo Bonzini snprintf(ostr, olen, "%s:%s%s", 608baacf047SPaolo Bonzini qemu_opt_get(opts, "host"), 609baacf047SPaolo Bonzini qemu_opt_get(opts, "port"), 610baacf047SPaolo Bonzini optstr ? optstr : ""); 611baacf047SPaolo Bonzini } 612baacf047SPaolo Bonzini } 613baacf047SPaolo Bonzini qemu_opts_del(opts); 614baacf047SPaolo Bonzini } 615baacf047SPaolo Bonzini return sock; 616baacf047SPaolo Bonzini } 617baacf047SPaolo Bonzini 618baacf047SPaolo Bonzini /** 619baacf047SPaolo Bonzini * Create a blocking socket and connect it to an address. 620baacf047SPaolo Bonzini * 621baacf047SPaolo Bonzini * @str: address string 622baacf047SPaolo Bonzini * @errp: set in case of an error 623baacf047SPaolo Bonzini * 624baacf047SPaolo Bonzini * Returns -1 in case of error, file descriptor on success 625baacf047SPaolo Bonzini **/ 626baacf047SPaolo Bonzini int inet_connect(const char *str, Error **errp) 627baacf047SPaolo Bonzini { 628baacf047SPaolo Bonzini QemuOpts *opts; 629baacf047SPaolo Bonzini int sock = -1; 630baacf047SPaolo Bonzini InetSocketAddress *addr; 631baacf047SPaolo Bonzini 632baacf047SPaolo Bonzini addr = inet_parse(str, errp); 633baacf047SPaolo Bonzini if (addr != NULL) { 63487ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 635baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr); 636baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 637baacf047SPaolo Bonzini sock = inet_connect_opts(opts, errp, NULL, NULL); 638baacf047SPaolo Bonzini qemu_opts_del(opts); 639baacf047SPaolo Bonzini } 640baacf047SPaolo Bonzini return sock; 641baacf047SPaolo Bonzini } 642baacf047SPaolo Bonzini 643baacf047SPaolo Bonzini /** 644baacf047SPaolo Bonzini * Create a non-blocking socket and connect it to an address. 645baacf047SPaolo Bonzini * Calls the callback function with fd in case of success or -1 in case of 646baacf047SPaolo Bonzini * error. 647baacf047SPaolo Bonzini * 648baacf047SPaolo Bonzini * @str: address string 649baacf047SPaolo Bonzini * @callback: callback function that is called when connect completes, 650baacf047SPaolo Bonzini * cannot be NULL. 651baacf047SPaolo Bonzini * @opaque: opaque for callback function 652baacf047SPaolo Bonzini * @errp: set in case of an error 653baacf047SPaolo Bonzini * 654baacf047SPaolo Bonzini * Returns: -1 on immediate error, file descriptor on success. 655baacf047SPaolo Bonzini **/ 656baacf047SPaolo Bonzini int inet_nonblocking_connect(const char *str, 657baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, 658baacf047SPaolo Bonzini void *opaque, Error **errp) 659baacf047SPaolo Bonzini { 660baacf047SPaolo Bonzini QemuOpts *opts; 661baacf047SPaolo Bonzini int sock = -1; 662baacf047SPaolo Bonzini InetSocketAddress *addr; 663baacf047SPaolo Bonzini 664baacf047SPaolo Bonzini g_assert(callback != NULL); 665baacf047SPaolo Bonzini 666baacf047SPaolo Bonzini addr = inet_parse(str, errp); 667baacf047SPaolo Bonzini if (addr != NULL) { 66887ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 669baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr); 670baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 671baacf047SPaolo Bonzini sock = inet_connect_opts(opts, errp, callback, opaque); 672baacf047SPaolo Bonzini qemu_opts_del(opts); 673baacf047SPaolo Bonzini } 674baacf047SPaolo Bonzini return sock; 675baacf047SPaolo Bonzini } 676baacf047SPaolo Bonzini 677baacf047SPaolo Bonzini #ifndef _WIN32 678baacf047SPaolo Bonzini 679baacf047SPaolo Bonzini int unix_listen_opts(QemuOpts *opts, Error **errp) 680baacf047SPaolo Bonzini { 681baacf047SPaolo Bonzini struct sockaddr_un un; 682baacf047SPaolo Bonzini const char *path = qemu_opt_get(opts, "path"); 683baacf047SPaolo Bonzini int sock, fd; 684baacf047SPaolo Bonzini 685baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 686baacf047SPaolo Bonzini if (sock < 0) { 687baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); 688baacf047SPaolo Bonzini return -1; 689baacf047SPaolo Bonzini } 690baacf047SPaolo Bonzini 691baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 692baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 693baacf047SPaolo Bonzini if (path && strlen(path)) { 694baacf047SPaolo Bonzini snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); 695baacf047SPaolo Bonzini } else { 696baacf047SPaolo Bonzini char *tmpdir = getenv("TMPDIR"); 697baacf047SPaolo Bonzini snprintf(un.sun_path, sizeof(un.sun_path), "%s/qemu-socket-XXXXXX", 698baacf047SPaolo Bonzini tmpdir ? tmpdir : "/tmp"); 699baacf047SPaolo Bonzini /* 700baacf047SPaolo Bonzini * This dummy fd usage silences the mktemp() unsecure warning. 701baacf047SPaolo Bonzini * Using mkstemp() doesn't make things more secure here 702baacf047SPaolo Bonzini * though. bind() complains about existing files, so we have 703baacf047SPaolo Bonzini * to unlink first and thus re-open the race window. The 704baacf047SPaolo Bonzini * worst case possible is bind() failing, i.e. a DoS attack. 705baacf047SPaolo Bonzini */ 706baacf047SPaolo Bonzini fd = mkstemp(un.sun_path); close(fd); 707baacf047SPaolo Bonzini qemu_opt_set(opts, "path", un.sun_path); 708baacf047SPaolo Bonzini } 709baacf047SPaolo Bonzini 710baacf047SPaolo Bonzini unlink(un.sun_path); 711baacf047SPaolo Bonzini if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { 712baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_BIND_FAILED); 713baacf047SPaolo Bonzini goto err; 714baacf047SPaolo Bonzini } 715baacf047SPaolo Bonzini if (listen(sock, 1) < 0) { 716baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_LISTEN_FAILED); 717baacf047SPaolo Bonzini goto err; 718baacf047SPaolo Bonzini } 719baacf047SPaolo Bonzini 720baacf047SPaolo Bonzini return sock; 721baacf047SPaolo Bonzini 722baacf047SPaolo Bonzini err: 723baacf047SPaolo Bonzini closesocket(sock); 724baacf047SPaolo Bonzini return -1; 725baacf047SPaolo Bonzini } 726baacf047SPaolo Bonzini 727baacf047SPaolo Bonzini int unix_connect_opts(QemuOpts *opts, Error **errp, 728baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 729baacf047SPaolo Bonzini { 730baacf047SPaolo Bonzini struct sockaddr_un un; 731baacf047SPaolo Bonzini const char *path = qemu_opt_get(opts, "path"); 732baacf047SPaolo Bonzini ConnectState *connect_state = NULL; 733baacf047SPaolo Bonzini int sock, rc; 734baacf047SPaolo Bonzini 735baacf047SPaolo Bonzini if (NULL == path) { 736312fd5f2SMarkus Armbruster error_setg(errp, "unix connect: no path specified"); 737baacf047SPaolo Bonzini return -1; 738baacf047SPaolo Bonzini } 739baacf047SPaolo Bonzini 740baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 741baacf047SPaolo Bonzini if (sock < 0) { 742baacf047SPaolo Bonzini error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); 743baacf047SPaolo Bonzini return -1; 744baacf047SPaolo Bonzini } 745baacf047SPaolo Bonzini if (callback != NULL) { 746baacf047SPaolo Bonzini connect_state = g_malloc0(sizeof(*connect_state)); 747baacf047SPaolo Bonzini connect_state->callback = callback; 748baacf047SPaolo Bonzini connect_state->opaque = opaque; 749f9e8caccSStefan Hajnoczi qemu_set_nonblock(sock); 750baacf047SPaolo Bonzini } 751baacf047SPaolo Bonzini 752baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 753baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 754baacf047SPaolo Bonzini snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); 755baacf047SPaolo Bonzini 756baacf047SPaolo Bonzini /* connect to peer */ 757baacf047SPaolo Bonzini do { 758baacf047SPaolo Bonzini rc = 0; 759baacf047SPaolo Bonzini if (connect(sock, (struct sockaddr *) &un, sizeof(un)) < 0) { 760baacf047SPaolo Bonzini rc = -socket_error(); 761baacf047SPaolo Bonzini } 762baacf047SPaolo Bonzini } while (rc == -EINTR); 763baacf047SPaolo Bonzini 764baacf047SPaolo Bonzini if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { 765baacf047SPaolo Bonzini connect_state->fd = sock; 766baacf047SPaolo Bonzini qemu_set_fd_handler2(sock, NULL, NULL, wait_for_connect, 767baacf047SPaolo Bonzini connect_state); 768baacf047SPaolo Bonzini return sock; 769baacf047SPaolo Bonzini } else if (rc >= 0) { 770baacf047SPaolo Bonzini /* non blocking socket immediate success, call callback */ 771baacf047SPaolo Bonzini if (callback != NULL) { 772baacf047SPaolo Bonzini callback(sock, opaque); 773baacf047SPaolo Bonzini } 774baacf047SPaolo Bonzini } 775baacf047SPaolo Bonzini 776baacf047SPaolo Bonzini if (rc < 0) { 777baacf047SPaolo Bonzini error_set_errno(errp, -rc, QERR_SOCKET_CONNECT_FAILED); 778baacf047SPaolo Bonzini close(sock); 779baacf047SPaolo Bonzini sock = -1; 780baacf047SPaolo Bonzini } 781baacf047SPaolo Bonzini 782baacf047SPaolo Bonzini g_free(connect_state); 783baacf047SPaolo Bonzini return sock; 784baacf047SPaolo Bonzini } 785baacf047SPaolo Bonzini 786baacf047SPaolo Bonzini #else 787baacf047SPaolo Bonzini 788baacf047SPaolo Bonzini int unix_listen_opts(QemuOpts *opts, Error **errp) 789baacf047SPaolo Bonzini { 790baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 791baacf047SPaolo Bonzini errno = ENOTSUP; 792baacf047SPaolo Bonzini return -1; 793baacf047SPaolo Bonzini } 794baacf047SPaolo Bonzini 795baacf047SPaolo Bonzini int unix_connect_opts(QemuOpts *opts, Error **errp, 796baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 797baacf047SPaolo Bonzini { 798baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 799baacf047SPaolo Bonzini errno = ENOTSUP; 800baacf047SPaolo Bonzini return -1; 801baacf047SPaolo Bonzini } 802baacf047SPaolo Bonzini #endif 803baacf047SPaolo Bonzini 804baacf047SPaolo Bonzini /* compatibility wrapper */ 805baacf047SPaolo Bonzini int unix_listen(const char *str, char *ostr, int olen, Error **errp) 806baacf047SPaolo Bonzini { 807baacf047SPaolo Bonzini QemuOpts *opts; 808baacf047SPaolo Bonzini char *path, *optstr; 809baacf047SPaolo Bonzini int sock, len; 810baacf047SPaolo Bonzini 81187ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 812baacf047SPaolo Bonzini 813baacf047SPaolo Bonzini optstr = strchr(str, ','); 814baacf047SPaolo Bonzini if (optstr) { 815baacf047SPaolo Bonzini len = optstr - str; 816baacf047SPaolo Bonzini if (len) { 817baacf047SPaolo Bonzini path = g_malloc(len+1); 818baacf047SPaolo Bonzini snprintf(path, len+1, "%.*s", len, str); 819baacf047SPaolo Bonzini qemu_opt_set(opts, "path", path); 820baacf047SPaolo Bonzini g_free(path); 821baacf047SPaolo Bonzini } 822baacf047SPaolo Bonzini } else { 823baacf047SPaolo Bonzini qemu_opt_set(opts, "path", str); 824baacf047SPaolo Bonzini } 825baacf047SPaolo Bonzini 826baacf047SPaolo Bonzini sock = unix_listen_opts(opts, errp); 827baacf047SPaolo Bonzini 828baacf047SPaolo Bonzini if (sock != -1 && ostr) 829baacf047SPaolo Bonzini snprintf(ostr, olen, "%s%s", qemu_opt_get(opts, "path"), optstr ? optstr : ""); 830baacf047SPaolo Bonzini qemu_opts_del(opts); 831baacf047SPaolo Bonzini return sock; 832baacf047SPaolo Bonzini } 833baacf047SPaolo Bonzini 834baacf047SPaolo Bonzini int unix_connect(const char *path, Error **errp) 835baacf047SPaolo Bonzini { 836baacf047SPaolo Bonzini QemuOpts *opts; 837baacf047SPaolo Bonzini int sock; 838baacf047SPaolo Bonzini 83987ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 840baacf047SPaolo Bonzini qemu_opt_set(opts, "path", path); 841baacf047SPaolo Bonzini sock = unix_connect_opts(opts, errp, NULL, NULL); 842baacf047SPaolo Bonzini qemu_opts_del(opts); 843baacf047SPaolo Bonzini return sock; 844baacf047SPaolo Bonzini } 845baacf047SPaolo Bonzini 846baacf047SPaolo Bonzini 847baacf047SPaolo Bonzini int unix_nonblocking_connect(const char *path, 848baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, 849baacf047SPaolo Bonzini void *opaque, Error **errp) 850baacf047SPaolo Bonzini { 851baacf047SPaolo Bonzini QemuOpts *opts; 852baacf047SPaolo Bonzini int sock = -1; 853baacf047SPaolo Bonzini 854baacf047SPaolo Bonzini g_assert(callback != NULL); 855baacf047SPaolo Bonzini 85687ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 857baacf047SPaolo Bonzini qemu_opt_set(opts, "path", path); 858baacf047SPaolo Bonzini sock = unix_connect_opts(opts, errp, callback, opaque); 859baacf047SPaolo Bonzini qemu_opts_del(opts); 860baacf047SPaolo Bonzini return sock; 861baacf047SPaolo Bonzini } 862baacf047SPaolo Bonzini 863baacf047SPaolo Bonzini SocketAddress *socket_parse(const char *str, Error **errp) 864baacf047SPaolo Bonzini { 865afde3f8bSGerd Hoffmann SocketAddress *addr; 866baacf047SPaolo Bonzini 867afde3f8bSGerd Hoffmann addr = g_new0(SocketAddress, 1); 868baacf047SPaolo Bonzini if (strstart(str, "unix:", NULL)) { 869baacf047SPaolo Bonzini if (str[5] == '\0') { 870312fd5f2SMarkus Armbruster error_setg(errp, "invalid Unix socket address"); 871baacf047SPaolo Bonzini goto fail; 872baacf047SPaolo Bonzini } else { 873baacf047SPaolo Bonzini addr->kind = SOCKET_ADDRESS_KIND_UNIX; 874baacf047SPaolo Bonzini addr->q_unix = g_new(UnixSocketAddress, 1); 875baacf047SPaolo Bonzini addr->q_unix->path = g_strdup(str + 5); 876baacf047SPaolo Bonzini } 877baacf047SPaolo Bonzini } else if (strstart(str, "fd:", NULL)) { 878baacf047SPaolo Bonzini if (str[3] == '\0') { 879312fd5f2SMarkus Armbruster error_setg(errp, "invalid file descriptor address"); 880baacf047SPaolo Bonzini goto fail; 881baacf047SPaolo Bonzini } else { 882baacf047SPaolo Bonzini addr->kind = SOCKET_ADDRESS_KIND_FD; 883baacf047SPaolo Bonzini addr->fd = g_new(String, 1); 884baacf047SPaolo Bonzini addr->fd->str = g_strdup(str + 3); 885baacf047SPaolo Bonzini } 886baacf047SPaolo Bonzini } else { 887baacf047SPaolo Bonzini addr->kind = SOCKET_ADDRESS_KIND_INET; 888baacf047SPaolo Bonzini addr->inet = inet_parse(str, errp); 889baacf047SPaolo Bonzini if (addr->inet == NULL) { 890baacf047SPaolo Bonzini goto fail; 891baacf047SPaolo Bonzini } 892baacf047SPaolo Bonzini } 893baacf047SPaolo Bonzini return addr; 894baacf047SPaolo Bonzini 895baacf047SPaolo Bonzini fail: 896baacf047SPaolo Bonzini qapi_free_SocketAddress(addr); 897baacf047SPaolo Bonzini return NULL; 898baacf047SPaolo Bonzini } 899baacf047SPaolo Bonzini 900baacf047SPaolo Bonzini int socket_connect(SocketAddress *addr, Error **errp, 901baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 902baacf047SPaolo Bonzini { 903baacf047SPaolo Bonzini QemuOpts *opts; 904baacf047SPaolo Bonzini int fd; 905baacf047SPaolo Bonzini 90687ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 907baacf047SPaolo Bonzini switch (addr->kind) { 908baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_INET: 909baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr->inet); 910baacf047SPaolo Bonzini fd = inet_connect_opts(opts, errp, callback, opaque); 911baacf047SPaolo Bonzini break; 912baacf047SPaolo Bonzini 913baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_UNIX: 914baacf047SPaolo Bonzini qemu_opt_set(opts, "path", addr->q_unix->path); 915baacf047SPaolo Bonzini fd = unix_connect_opts(opts, errp, callback, opaque); 916baacf047SPaolo Bonzini break; 917baacf047SPaolo Bonzini 918baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_FD: 919baacf047SPaolo Bonzini fd = monitor_get_fd(cur_mon, addr->fd->str, errp); 920d1ec72a4SGerd Hoffmann if (fd >= 0 && callback) { 9211a751ebfSStefan Hajnoczi qemu_set_nonblock(fd); 922baacf047SPaolo Bonzini callback(fd, opaque); 923baacf047SPaolo Bonzini } 924baacf047SPaolo Bonzini break; 925baacf047SPaolo Bonzini 926baacf047SPaolo Bonzini default: 927baacf047SPaolo Bonzini abort(); 928baacf047SPaolo Bonzini } 929baacf047SPaolo Bonzini qemu_opts_del(opts); 930baacf047SPaolo Bonzini return fd; 931baacf047SPaolo Bonzini } 932baacf047SPaolo Bonzini 933baacf047SPaolo Bonzini int socket_listen(SocketAddress *addr, Error **errp) 934baacf047SPaolo Bonzini { 935baacf047SPaolo Bonzini QemuOpts *opts; 936baacf047SPaolo Bonzini int fd; 937baacf047SPaolo Bonzini 93887ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 939baacf047SPaolo Bonzini switch (addr->kind) { 940baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_INET: 941baacf047SPaolo Bonzini inet_addr_to_opts(opts, addr->inet); 942baacf047SPaolo Bonzini fd = inet_listen_opts(opts, 0, errp); 943baacf047SPaolo Bonzini break; 944baacf047SPaolo Bonzini 945baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_UNIX: 946baacf047SPaolo Bonzini qemu_opt_set(opts, "path", addr->q_unix->path); 947baacf047SPaolo Bonzini fd = unix_listen_opts(opts, errp); 948baacf047SPaolo Bonzini break; 949baacf047SPaolo Bonzini 950baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_FD: 951baacf047SPaolo Bonzini fd = monitor_get_fd(cur_mon, addr->fd->str, errp); 952baacf047SPaolo Bonzini break; 953baacf047SPaolo Bonzini 954baacf047SPaolo Bonzini default: 955baacf047SPaolo Bonzini abort(); 956baacf047SPaolo Bonzini } 957baacf047SPaolo Bonzini qemu_opts_del(opts); 958baacf047SPaolo Bonzini return fd; 959baacf047SPaolo Bonzini } 960baacf047SPaolo Bonzini 9613ecc059dSGerd Hoffmann int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) 9623ecc059dSGerd Hoffmann { 9633ecc059dSGerd Hoffmann QemuOpts *opts; 9643ecc059dSGerd Hoffmann int fd; 9653ecc059dSGerd Hoffmann 96687ea75d5SPeter Crosthwaite opts = qemu_opts_create(&socket_optslist, NULL, 0, &error_abort); 9673ecc059dSGerd Hoffmann switch (remote->kind) { 9683ecc059dSGerd Hoffmann case SOCKET_ADDRESS_KIND_INET: 9693ecc059dSGerd Hoffmann qemu_opt_set(opts, "host", remote->inet->host); 9703ecc059dSGerd Hoffmann qemu_opt_set(opts, "port", remote->inet->port); 9713ecc059dSGerd Hoffmann if (local) { 9723ecc059dSGerd Hoffmann qemu_opt_set(opts, "localaddr", local->inet->host); 9733ecc059dSGerd Hoffmann qemu_opt_set(opts, "localport", local->inet->port); 9743ecc059dSGerd Hoffmann } 9753ecc059dSGerd Hoffmann fd = inet_dgram_opts(opts, errp); 9763ecc059dSGerd Hoffmann break; 9773ecc059dSGerd Hoffmann 9783ecc059dSGerd Hoffmann default: 9793ecc059dSGerd Hoffmann error_setg(errp, "socket type unsupported for datagram"); 9807a5b6af1SGerd Hoffmann fd = -1; 9813ecc059dSGerd Hoffmann } 9823ecc059dSGerd Hoffmann qemu_opts_del(opts); 9833ecc059dSGerd Hoffmann return fd; 9843ecc059dSGerd Hoffmann } 985