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" 282a8e21c7SDaniel P. Berrange #include "qapi/qmp-input-visitor.h" 292a8e21c7SDaniel P. Berrange #include "qapi/qmp-output-visitor.h" 302a8e21c7SDaniel P. Berrange #include "qapi-visit.h" 31baacf047SPaolo Bonzini 32baacf047SPaolo Bonzini #ifndef AI_ADDRCONFIG 33baacf047SPaolo Bonzini # define AI_ADDRCONFIG 0 34baacf047SPaolo Bonzini #endif 353de3d698SWolfgang Bumiller #ifndef AI_V4MAPPED 363de3d698SWolfgang Bumiller # define AI_V4MAPPED 0 373de3d698SWolfgang Bumiller #endif 38baacf047SPaolo Bonzini 39baacf047SPaolo Bonzini 40baacf047SPaolo Bonzini static int inet_getport(struct addrinfo *e) 41baacf047SPaolo Bonzini { 42baacf047SPaolo Bonzini struct sockaddr_in *i4; 43baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 44baacf047SPaolo Bonzini 45baacf047SPaolo Bonzini switch (e->ai_family) { 46baacf047SPaolo Bonzini case PF_INET6: 47baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 48baacf047SPaolo Bonzini return ntohs(i6->sin6_port); 49baacf047SPaolo Bonzini case PF_INET: 50baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 51baacf047SPaolo Bonzini return ntohs(i4->sin_port); 52baacf047SPaolo Bonzini default: 53baacf047SPaolo Bonzini return 0; 54baacf047SPaolo Bonzini } 55baacf047SPaolo Bonzini } 56baacf047SPaolo Bonzini 57baacf047SPaolo Bonzini static void inet_setport(struct addrinfo *e, int port) 58baacf047SPaolo Bonzini { 59baacf047SPaolo Bonzini struct sockaddr_in *i4; 60baacf047SPaolo Bonzini struct sockaddr_in6 *i6; 61baacf047SPaolo Bonzini 62baacf047SPaolo Bonzini switch (e->ai_family) { 63baacf047SPaolo Bonzini case PF_INET6: 64baacf047SPaolo Bonzini i6 = (void*)e->ai_addr; 65baacf047SPaolo Bonzini i6->sin6_port = htons(port); 66baacf047SPaolo Bonzini break; 67baacf047SPaolo Bonzini case PF_INET: 68baacf047SPaolo Bonzini i4 = (void*)e->ai_addr; 69baacf047SPaolo Bonzini i4->sin_port = htons(port); 70baacf047SPaolo Bonzini break; 71baacf047SPaolo Bonzini } 72baacf047SPaolo Bonzini } 73baacf047SPaolo Bonzini 74a589569fSWenchao Xia NetworkAddressFamily inet_netfamily(int family) 75a589569fSWenchao Xia { 76a589569fSWenchao Xia switch (family) { 77a589569fSWenchao Xia case PF_INET6: return NETWORK_ADDRESS_FAMILY_IPV6; 78a589569fSWenchao Xia case PF_INET: return NETWORK_ADDRESS_FAMILY_IPV4; 79a589569fSWenchao Xia case PF_UNIX: return NETWORK_ADDRESS_FAMILY_UNIX; 80a589569fSWenchao Xia } 81a589569fSWenchao Xia return NETWORK_ADDRESS_FAMILY_UNKNOWN; 82a589569fSWenchao Xia } 83a589569fSWenchao Xia 841856835dSDaniel P. Berrange /* 851856835dSDaniel P. Berrange * Matrix we're trying to apply 861856835dSDaniel P. Berrange * 871856835dSDaniel P. Berrange * ipv4 ipv6 family 881856835dSDaniel P. Berrange * - - PF_UNSPEC 891856835dSDaniel P. Berrange * - f PF_INET 901856835dSDaniel P. Berrange * - t PF_INET6 911856835dSDaniel P. Berrange * f - PF_INET6 921856835dSDaniel P. Berrange * f f <error> 931856835dSDaniel P. Berrange * f t PF_INET6 941856835dSDaniel P. Berrange * t - PF_INET 951856835dSDaniel P. Berrange * t f PF_INET 961856835dSDaniel P. Berrange * t t PF_INET6 971856835dSDaniel P. Berrange * 981856835dSDaniel P. Berrange * NB, this matrix is only about getting the neccessary results 991856835dSDaniel P. Berrange * from getaddrinfo(). Some of the cases require further work 1001856835dSDaniel P. Berrange * after reading results from getaddrinfo in order to fully 1011856835dSDaniel P. Berrange * apply the logic the end user wants. eg with the last case 1021856835dSDaniel P. Berrange * ipv4=t + ipv6=t + PF_INET6, getaddrinfo alone can only 1031856835dSDaniel P. Berrange * guarantee the ipv6=t part of the request - we need more 1041856835dSDaniel P. Berrange * checks to provide ipv4=t part of the guarantee. This is 1051856835dSDaniel P. Berrange * outside scope of this method and not currently handled by 1061856835dSDaniel P. Berrange * callers at all. 1071856835dSDaniel P. Berrange */ 1081856835dSDaniel P. Berrange static int inet_ai_family_from_address(InetSocketAddress *addr, 1091856835dSDaniel P. Berrange Error **errp) 1101856835dSDaniel P. Berrange { 1111856835dSDaniel P. Berrange if (addr->has_ipv6 && addr->has_ipv4 && 1121856835dSDaniel P. Berrange !addr->ipv6 && !addr->ipv4) { 1131856835dSDaniel P. Berrange error_setg(errp, "Cannot disable IPv4 and IPv6 at same time"); 1141856835dSDaniel P. Berrange return PF_UNSPEC; 1151856835dSDaniel P. Berrange } 1161856835dSDaniel P. Berrange if ((addr->has_ipv6 && addr->ipv6) || (addr->has_ipv4 && !addr->ipv4)) { 1171856835dSDaniel P. Berrange return PF_INET6; 1181856835dSDaniel P. Berrange } 1191856835dSDaniel P. Berrange if ((addr->has_ipv4 && addr->ipv4) || (addr->has_ipv6 && !addr->ipv6)) { 1201856835dSDaniel P. Berrange return PF_INET; 1211856835dSDaniel P. Berrange } 1221856835dSDaniel P. Berrange return PF_UNSPEC; 1231856835dSDaniel P. Berrange } 1241856835dSDaniel P. Berrange 1251856835dSDaniel P. Berrange static int inet_listen_saddr(InetSocketAddress *saddr, 1261856835dSDaniel P. Berrange int port_offset, 1271856835dSDaniel P. Berrange bool update_addr, 1281856835dSDaniel P. Berrange Error **errp) 129baacf047SPaolo Bonzini { 130baacf047SPaolo Bonzini struct addrinfo ai,*res,*e; 131baacf047SPaolo Bonzini char port[33]; 132baacf047SPaolo Bonzini char uaddr[INET6_ADDRSTRLEN+1]; 133baacf047SPaolo Bonzini char uport[33]; 1341856835dSDaniel P. Berrange int slisten, rc, port_min, port_max, p; 1351856835dSDaniel P. Berrange Error *err = NULL; 136baacf047SPaolo Bonzini 137baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 1383de3d698SWolfgang Bumiller ai.ai_flags = AI_PASSIVE; 1391856835dSDaniel P. Berrange ai.ai_family = inet_ai_family_from_address(saddr, &err); 140baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 141baacf047SPaolo Bonzini 1421856835dSDaniel P. Berrange if (err) { 1431856835dSDaniel P. Berrange error_propagate(errp, err); 1441856835dSDaniel P. Berrange return -1; 1451856835dSDaniel P. Berrange } 1461856835dSDaniel P. Berrange 1471856835dSDaniel P. Berrange if (saddr->host == NULL) { 1480983f5e6SDaniel P. Berrange error_setg(errp, "host not specified"); 149baacf047SPaolo Bonzini return -1; 150baacf047SPaolo Bonzini } 1511856835dSDaniel P. Berrange if (saddr->port != NULL) { 1521856835dSDaniel P. Berrange pstrcpy(port, sizeof(port), saddr->port); 1530983f5e6SDaniel P. Berrange } else { 1540983f5e6SDaniel P. Berrange port[0] = '\0'; 1550983f5e6SDaniel P. Berrange } 156baacf047SPaolo Bonzini 157baacf047SPaolo Bonzini /* lookup */ 1588bc89127SGerd Hoffmann if (port_offset) { 1598bc89127SGerd Hoffmann unsigned long long baseport; 1600983f5e6SDaniel P. Berrange if (strlen(port) == 0) { 1610983f5e6SDaniel P. Berrange error_setg(errp, "port not specified"); 1620983f5e6SDaniel P. Berrange return -1; 1630983f5e6SDaniel P. Berrange } 1648bc89127SGerd Hoffmann if (parse_uint_full(port, &baseport, 10) < 0) { 1658bc89127SGerd Hoffmann error_setg(errp, "can't convert to a number: %s", port); 1668bc89127SGerd Hoffmann return -1; 1678bc89127SGerd Hoffmann } 1688bc89127SGerd Hoffmann if (baseport > 65535 || 1698bc89127SGerd Hoffmann baseport + port_offset > 65535) { 1708bc89127SGerd Hoffmann error_setg(errp, "port %s out of range", port); 1718bc89127SGerd Hoffmann return -1; 1728bc89127SGerd Hoffmann } 1738bc89127SGerd Hoffmann snprintf(port, sizeof(port), "%d", (int)baseport + port_offset); 1748bc89127SGerd Hoffmann } 1751856835dSDaniel P. Berrange rc = getaddrinfo(strlen(saddr->host) ? saddr->host : NULL, 1760983f5e6SDaniel P. Berrange strlen(port) ? port : NULL, &ai, &res); 177baacf047SPaolo Bonzini if (rc != 0) { 1781856835dSDaniel P. Berrange error_setg(errp, "address resolution failed for %s:%s: %s", 1791856835dSDaniel P. Berrange saddr->host, port, gai_strerror(rc)); 180baacf047SPaolo Bonzini return -1; 181baacf047SPaolo Bonzini } 182baacf047SPaolo Bonzini 183baacf047SPaolo Bonzini /* create socket + bind */ 184baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 185baacf047SPaolo Bonzini getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, 186baacf047SPaolo Bonzini uaddr,INET6_ADDRSTRLEN,uport,32, 187baacf047SPaolo Bonzini NI_NUMERICHOST | NI_NUMERICSERV); 188baacf047SPaolo Bonzini slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); 189baacf047SPaolo Bonzini if (slisten < 0) { 190baacf047SPaolo Bonzini if (!e->ai_next) { 191235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 192baacf047SPaolo Bonzini } 193baacf047SPaolo Bonzini continue; 194baacf047SPaolo Bonzini } 195baacf047SPaolo Bonzini 19604fd1c78SSebastian Ottlik socket_set_fast_reuse(slisten); 197baacf047SPaolo Bonzini #ifdef IPV6_V6ONLY 198baacf047SPaolo Bonzini if (e->ai_family == PF_INET6) { 199baacf047SPaolo Bonzini /* listen on both ipv4 and ipv6 */ 200f9b5426fSPeter Maydell const int off = 0; 2019957fc7fSStefan Weil qemu_setsockopt(slisten, IPPROTO_IPV6, IPV6_V6ONLY, &off, 202baacf047SPaolo Bonzini sizeof(off)); 203baacf047SPaolo Bonzini } 204baacf047SPaolo Bonzini #endif 205baacf047SPaolo Bonzini 206baacf047SPaolo Bonzini port_min = inet_getport(e); 2071856835dSDaniel P. Berrange port_max = saddr->has_to ? saddr->to + port_offset : port_min; 208baacf047SPaolo Bonzini for (p = port_min; p <= port_max; p++) { 209baacf047SPaolo Bonzini inet_setport(e, p); 210baacf047SPaolo Bonzini if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) { 211baacf047SPaolo Bonzini goto listen; 212baacf047SPaolo Bonzini } 213baacf047SPaolo Bonzini if (p == port_max) { 214baacf047SPaolo Bonzini if (!e->ai_next) { 215235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to bind socket"); 216baacf047SPaolo Bonzini } 217baacf047SPaolo Bonzini } 218baacf047SPaolo Bonzini } 219baacf047SPaolo Bonzini closesocket(slisten); 220baacf047SPaolo Bonzini } 221baacf047SPaolo Bonzini freeaddrinfo(res); 222baacf047SPaolo Bonzini return -1; 223baacf047SPaolo Bonzini 224baacf047SPaolo Bonzini listen: 225baacf047SPaolo Bonzini if (listen(slisten,1) != 0) { 226235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to listen on socket"); 227baacf047SPaolo Bonzini closesocket(slisten); 228baacf047SPaolo Bonzini freeaddrinfo(res); 229baacf047SPaolo Bonzini return -1; 230baacf047SPaolo Bonzini } 2311856835dSDaniel P. Berrange if (update_addr) { 2321856835dSDaniel P. Berrange g_free(saddr->host); 2331856835dSDaniel P. Berrange saddr->host = g_strdup(uaddr); 2341856835dSDaniel P. Berrange g_free(saddr->port); 2351856835dSDaniel P. Berrange saddr->port = g_strdup_printf("%d", 2361856835dSDaniel P. Berrange inet_getport(e) - port_offset); 2371856835dSDaniel P. Berrange saddr->has_ipv6 = saddr->ipv6 = e->ai_family == PF_INET6; 2381856835dSDaniel P. Berrange saddr->has_ipv4 = saddr->ipv4 = e->ai_family != PF_INET6; 2391856835dSDaniel P. Berrange } 240baacf047SPaolo Bonzini freeaddrinfo(res); 241baacf047SPaolo Bonzini return slisten; 242baacf047SPaolo Bonzini } 243baacf047SPaolo Bonzini 244baacf047SPaolo Bonzini #ifdef _WIN32 245baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 246baacf047SPaolo Bonzini ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) 247baacf047SPaolo Bonzini #else 248baacf047SPaolo Bonzini #define QEMU_SOCKET_RC_INPROGRESS(rc) \ 249baacf047SPaolo Bonzini ((rc) == -EINPROGRESS) 250baacf047SPaolo Bonzini #endif 251baacf047SPaolo Bonzini 252baacf047SPaolo Bonzini /* Struct to store connect state for non blocking connect */ 253baacf047SPaolo Bonzini typedef struct ConnectState { 254baacf047SPaolo Bonzini int fd; 255baacf047SPaolo Bonzini struct addrinfo *addr_list; 256baacf047SPaolo Bonzini struct addrinfo *current_addr; 257baacf047SPaolo Bonzini NonBlockingConnectHandler *callback; 258baacf047SPaolo Bonzini void *opaque; 259baacf047SPaolo Bonzini } ConnectState; 260baacf047SPaolo Bonzini 261baacf047SPaolo Bonzini static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, 262baacf047SPaolo Bonzini ConnectState *connect_state, Error **errp); 263baacf047SPaolo Bonzini 264baacf047SPaolo Bonzini static void wait_for_connect(void *opaque) 265baacf047SPaolo Bonzini { 266baacf047SPaolo Bonzini ConnectState *s = opaque; 267baacf047SPaolo Bonzini int val = 0, rc = 0; 268baacf047SPaolo Bonzini socklen_t valsize = sizeof(val); 269baacf047SPaolo Bonzini bool in_progress; 27051795029SCorey Minyard Error *err = NULL; 271baacf047SPaolo Bonzini 27282e1cc4bSFam Zheng qemu_set_fd_handler(s->fd, NULL, NULL, NULL); 273baacf047SPaolo Bonzini 274baacf047SPaolo Bonzini do { 2759957fc7fSStefan Weil rc = qemu_getsockopt(s->fd, SOL_SOCKET, SO_ERROR, &val, &valsize); 276baacf047SPaolo Bonzini } while (rc == -1 && socket_error() == EINTR); 277baacf047SPaolo Bonzini 278baacf047SPaolo Bonzini /* update rc to contain error */ 279baacf047SPaolo Bonzini if (!rc && val) { 280baacf047SPaolo Bonzini rc = -1; 28151795029SCorey Minyard errno = val; 282baacf047SPaolo Bonzini } 283baacf047SPaolo Bonzini 284baacf047SPaolo Bonzini /* connect error */ 285baacf047SPaolo Bonzini if (rc < 0) { 28651795029SCorey Minyard error_setg_errno(&err, errno, "Error connecting to socket"); 287baacf047SPaolo Bonzini closesocket(s->fd); 288baacf047SPaolo Bonzini s->fd = rc; 289baacf047SPaolo Bonzini } 290baacf047SPaolo Bonzini 291baacf047SPaolo Bonzini /* try to connect to the next address on the list */ 292baacf047SPaolo Bonzini if (s->current_addr) { 293baacf047SPaolo Bonzini while (s->current_addr->ai_next != NULL && s->fd < 0) { 294baacf047SPaolo Bonzini s->current_addr = s->current_addr->ai_next; 295baacf047SPaolo Bonzini s->fd = inet_connect_addr(s->current_addr, &in_progress, s, NULL); 29651795029SCorey Minyard if (s->fd < 0) { 29751795029SCorey Minyard error_free(err); 29851795029SCorey Minyard err = NULL; 29951795029SCorey Minyard error_setg_errno(&err, errno, "Unable to start socket connect"); 30051795029SCorey Minyard } 301baacf047SPaolo Bonzini /* connect in progress */ 302baacf047SPaolo Bonzini if (in_progress) { 30351795029SCorey Minyard goto out; 304baacf047SPaolo Bonzini } 305baacf047SPaolo Bonzini } 306baacf047SPaolo Bonzini 307baacf047SPaolo Bonzini freeaddrinfo(s->addr_list); 308baacf047SPaolo Bonzini } 309baacf047SPaolo Bonzini 310baacf047SPaolo Bonzini if (s->callback) { 31151795029SCorey Minyard s->callback(s->fd, err, s->opaque); 312baacf047SPaolo Bonzini } 313baacf047SPaolo Bonzini g_free(s); 31451795029SCorey Minyard out: 31551795029SCorey Minyard error_free(err); 316baacf047SPaolo Bonzini } 317baacf047SPaolo Bonzini 318baacf047SPaolo Bonzini static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, 319baacf047SPaolo Bonzini ConnectState *connect_state, Error **errp) 320baacf047SPaolo Bonzini { 321baacf047SPaolo Bonzini int sock, rc; 322baacf047SPaolo Bonzini 323baacf047SPaolo Bonzini *in_progress = false; 324baacf047SPaolo Bonzini 325baacf047SPaolo Bonzini sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); 326baacf047SPaolo Bonzini if (sock < 0) { 327235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 328baacf047SPaolo Bonzini return -1; 329baacf047SPaolo Bonzini } 33004fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 331baacf047SPaolo Bonzini if (connect_state != NULL) { 332f9e8caccSStefan Hajnoczi qemu_set_nonblock(sock); 333baacf047SPaolo Bonzini } 334baacf047SPaolo Bonzini /* connect to peer */ 335baacf047SPaolo Bonzini do { 336baacf047SPaolo Bonzini rc = 0; 337baacf047SPaolo Bonzini if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { 338baacf047SPaolo Bonzini rc = -socket_error(); 339baacf047SPaolo Bonzini } 340baacf047SPaolo Bonzini } while (rc == -EINTR); 341baacf047SPaolo Bonzini 342baacf047SPaolo Bonzini if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { 343baacf047SPaolo Bonzini connect_state->fd = sock; 34482e1cc4bSFam Zheng qemu_set_fd_handler(sock, NULL, wait_for_connect, connect_state); 345baacf047SPaolo Bonzini *in_progress = true; 346baacf047SPaolo Bonzini } else if (rc < 0) { 347235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to connect socket"); 348baacf047SPaolo Bonzini closesocket(sock); 349baacf047SPaolo Bonzini return -1; 350baacf047SPaolo Bonzini } 351baacf047SPaolo Bonzini return sock; 352baacf047SPaolo Bonzini } 353baacf047SPaolo Bonzini 3542942e420SDaniel P. Berrange static struct addrinfo *inet_parse_connect_saddr(InetSocketAddress *saddr, 3552942e420SDaniel P. Berrange Error **errp) 356baacf047SPaolo Bonzini { 357baacf047SPaolo Bonzini struct addrinfo ai, *res; 358baacf047SPaolo Bonzini int rc; 3592942e420SDaniel P. Berrange Error *err = NULL; 360baacf047SPaolo Bonzini 361baacf047SPaolo Bonzini memset(&ai, 0, sizeof(ai)); 362baacf047SPaolo Bonzini 3633de3d698SWolfgang Bumiller ai.ai_flags = AI_CANONNAME | AI_V4MAPPED | AI_ADDRCONFIG; 3642942e420SDaniel P. Berrange ai.ai_family = inet_ai_family_from_address(saddr, &err); 365baacf047SPaolo Bonzini ai.ai_socktype = SOCK_STREAM; 366baacf047SPaolo Bonzini 3672942e420SDaniel P. Berrange if (err) { 3682942e420SDaniel P. Berrange error_propagate(errp, err); 3692942e420SDaniel P. Berrange return NULL; 3702942e420SDaniel P. Berrange } 3712942e420SDaniel P. Berrange 3722942e420SDaniel P. Berrange if (saddr->host == NULL || saddr->port == NULL) { 373baacf047SPaolo Bonzini error_setg(errp, "host and/or port not specified"); 374baacf047SPaolo Bonzini return NULL; 375baacf047SPaolo Bonzini } 376baacf047SPaolo Bonzini 377baacf047SPaolo Bonzini /* lookup */ 3782942e420SDaniel P. Berrange rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); 379baacf047SPaolo Bonzini if (rc != 0) { 3802942e420SDaniel P. Berrange error_setg(errp, "address resolution failed for %s:%s: %s", 3812942e420SDaniel P. Berrange saddr->host, saddr->port, gai_strerror(rc)); 382baacf047SPaolo Bonzini return NULL; 383baacf047SPaolo Bonzini } 384baacf047SPaolo Bonzini return res; 385baacf047SPaolo Bonzini } 386baacf047SPaolo Bonzini 387baacf047SPaolo Bonzini /** 388baacf047SPaolo Bonzini * Create a socket and connect it to an address. 389baacf047SPaolo Bonzini * 3902942e420SDaniel P. Berrange * @saddr: Inet socket address specification 391baacf047SPaolo Bonzini * @errp: set on error 392baacf047SPaolo Bonzini * @callback: callback function for non-blocking connect 393baacf047SPaolo Bonzini * @opaque: opaque for callback function 394baacf047SPaolo Bonzini * 395baacf047SPaolo Bonzini * Returns: -1 on error, file descriptor on success. 396baacf047SPaolo Bonzini * 397baacf047SPaolo Bonzini * If @callback is non-null, the connect is non-blocking. If this 398baacf047SPaolo Bonzini * function succeeds, callback will be called when the connection 399baacf047SPaolo Bonzini * completes, with the file descriptor on success, or -1 on error. 400baacf047SPaolo Bonzini */ 4012942e420SDaniel P. Berrange static int inet_connect_saddr(InetSocketAddress *saddr, Error **errp, 402baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 403baacf047SPaolo Bonzini { 4043f9286b7SMarkus Armbruster Error *local_err = NULL; 405baacf047SPaolo Bonzini struct addrinfo *res, *e; 406baacf047SPaolo Bonzini int sock = -1; 407baacf047SPaolo Bonzini bool in_progress; 408baacf047SPaolo Bonzini ConnectState *connect_state = NULL; 409baacf047SPaolo Bonzini 4102942e420SDaniel P. Berrange res = inet_parse_connect_saddr(saddr, errp); 411baacf047SPaolo Bonzini if (!res) { 412baacf047SPaolo Bonzini return -1; 413baacf047SPaolo Bonzini } 414baacf047SPaolo Bonzini 415baacf047SPaolo Bonzini if (callback != NULL) { 416baacf047SPaolo Bonzini connect_state = g_malloc0(sizeof(*connect_state)); 417baacf047SPaolo Bonzini connect_state->addr_list = res; 418baacf047SPaolo Bonzini connect_state->callback = callback; 419baacf047SPaolo Bonzini connect_state->opaque = opaque; 420baacf047SPaolo Bonzini } 421baacf047SPaolo Bonzini 422baacf047SPaolo Bonzini for (e = res; e != NULL; e = e->ai_next) { 4233f9286b7SMarkus Armbruster error_free(local_err); 4243f9286b7SMarkus Armbruster local_err = NULL; 425baacf047SPaolo Bonzini if (connect_state != NULL) { 426baacf047SPaolo Bonzini connect_state->current_addr = e; 427baacf047SPaolo Bonzini } 4283f9286b7SMarkus Armbruster sock = inet_connect_addr(e, &in_progress, connect_state, &local_err); 4293f9286b7SMarkus Armbruster if (sock >= 0) { 430baacf047SPaolo Bonzini break; 431baacf047SPaolo Bonzini } 432baacf047SPaolo Bonzini } 4333f9286b7SMarkus Armbruster 4343f9286b7SMarkus Armbruster if (sock < 0) { 4353f9286b7SMarkus Armbruster error_propagate(errp, local_err); 4363f9286b7SMarkus Armbruster } else if (in_progress) { 4373f9286b7SMarkus Armbruster /* wait_for_connect() will do the rest */ 4383f9286b7SMarkus Armbruster return sock; 4393f9286b7SMarkus Armbruster } else { 4403f9286b7SMarkus Armbruster if (callback) { 44151795029SCorey Minyard callback(sock, NULL, opaque); 4423f9286b7SMarkus Armbruster } 4433f9286b7SMarkus Armbruster } 444baacf047SPaolo Bonzini g_free(connect_state); 445baacf047SPaolo Bonzini freeaddrinfo(res); 446baacf047SPaolo Bonzini return sock; 447baacf047SPaolo Bonzini } 448baacf047SPaolo Bonzini 449*8b39910eSDaniel P. Berrange static int inet_dgram_saddr(InetSocketAddress *sraddr, 450*8b39910eSDaniel P. Berrange InetSocketAddress *sladdr, 451*8b39910eSDaniel P. Berrange Error **errp) 452baacf047SPaolo Bonzini { 453baacf047SPaolo Bonzini struct addrinfo ai, *peer = NULL, *local = NULL; 454baacf047SPaolo Bonzini const char *addr; 455baacf047SPaolo Bonzini const char *port; 456baacf047SPaolo Bonzini int sock = -1, rc; 457*8b39910eSDaniel P. Berrange Error *err = NULL; 458baacf047SPaolo Bonzini 459baacf047SPaolo Bonzini /* lookup peer addr */ 460baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 4613de3d698SWolfgang Bumiller ai.ai_flags = AI_CANONNAME | AI_V4MAPPED | AI_ADDRCONFIG; 462*8b39910eSDaniel P. Berrange ai.ai_family = inet_ai_family_from_address(sraddr, &err); 463baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 464baacf047SPaolo Bonzini 465*8b39910eSDaniel P. Berrange if (err) { 466*8b39910eSDaniel P. Berrange error_propagate(errp, err); 467*8b39910eSDaniel P. Berrange return -1; 468*8b39910eSDaniel P. Berrange } 469*8b39910eSDaniel P. Berrange 470*8b39910eSDaniel P. Berrange addr = sraddr->host; 471*8b39910eSDaniel P. Berrange port = sraddr->port; 472baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 473baacf047SPaolo Bonzini addr = "localhost"; 474baacf047SPaolo Bonzini } 475baacf047SPaolo Bonzini if (port == NULL || strlen(port) == 0) { 476baacf047SPaolo Bonzini error_setg(errp, "remote port not specified"); 477baacf047SPaolo Bonzini return -1; 478baacf047SPaolo Bonzini } 479baacf047SPaolo Bonzini 480baacf047SPaolo Bonzini if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) { 481baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 482baacf047SPaolo Bonzini gai_strerror(rc)); 483baacf047SPaolo Bonzini return -1; 484baacf047SPaolo Bonzini } 485baacf047SPaolo Bonzini 486baacf047SPaolo Bonzini /* lookup local addr */ 487baacf047SPaolo Bonzini memset(&ai,0, sizeof(ai)); 488baacf047SPaolo Bonzini ai.ai_flags = AI_PASSIVE; 489baacf047SPaolo Bonzini ai.ai_family = peer->ai_family; 490baacf047SPaolo Bonzini ai.ai_socktype = SOCK_DGRAM; 491baacf047SPaolo Bonzini 492*8b39910eSDaniel P. Berrange if (sladdr) { 493*8b39910eSDaniel P. Berrange addr = sladdr->host; 494*8b39910eSDaniel P. Berrange port = sladdr->port; 495baacf047SPaolo Bonzini if (addr == NULL || strlen(addr) == 0) { 496baacf047SPaolo Bonzini addr = NULL; 497baacf047SPaolo Bonzini } 498*8b39910eSDaniel P. Berrange if (!port || strlen(port) == 0) { 499baacf047SPaolo Bonzini port = "0"; 500*8b39910eSDaniel P. Berrange } 501*8b39910eSDaniel P. Berrange } else { 502*8b39910eSDaniel P. Berrange addr = NULL; 503*8b39910eSDaniel P. Berrange port = "0"; 504*8b39910eSDaniel P. Berrange } 505baacf047SPaolo Bonzini 506baacf047SPaolo Bonzini if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) { 507baacf047SPaolo Bonzini error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, 508baacf047SPaolo Bonzini gai_strerror(rc)); 509baacf047SPaolo Bonzini goto err; 510baacf047SPaolo Bonzini } 511baacf047SPaolo Bonzini 512baacf047SPaolo Bonzini /* create socket */ 513baacf047SPaolo Bonzini sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); 514baacf047SPaolo Bonzini if (sock < 0) { 515235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 516baacf047SPaolo Bonzini goto err; 517baacf047SPaolo Bonzini } 51804fd1c78SSebastian Ottlik socket_set_fast_reuse(sock); 519baacf047SPaolo Bonzini 520baacf047SPaolo Bonzini /* bind socket */ 521baacf047SPaolo Bonzini if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { 522235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to bind socket"); 523baacf047SPaolo Bonzini goto err; 524baacf047SPaolo Bonzini } 525baacf047SPaolo Bonzini 526baacf047SPaolo Bonzini /* connect to peer */ 527baacf047SPaolo Bonzini if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { 528235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to connect socket"); 529baacf047SPaolo Bonzini goto err; 530baacf047SPaolo Bonzini } 531baacf047SPaolo Bonzini 532baacf047SPaolo Bonzini freeaddrinfo(local); 533baacf047SPaolo Bonzini freeaddrinfo(peer); 534baacf047SPaolo Bonzini return sock; 535baacf047SPaolo Bonzini 536baacf047SPaolo Bonzini err: 537baacf047SPaolo Bonzini if (-1 != sock) 538baacf047SPaolo Bonzini closesocket(sock); 539baacf047SPaolo Bonzini if (local) 540baacf047SPaolo Bonzini freeaddrinfo(local); 541baacf047SPaolo Bonzini if (peer) 542baacf047SPaolo Bonzini freeaddrinfo(peer); 543baacf047SPaolo Bonzini return -1; 544baacf047SPaolo Bonzini } 545baacf047SPaolo Bonzini 546baacf047SPaolo Bonzini /* compatibility wrapper */ 547f17c90beSKevin Wolf InetSocketAddress *inet_parse(const char *str, Error **errp) 548baacf047SPaolo Bonzini { 549baacf047SPaolo Bonzini InetSocketAddress *addr; 550baacf047SPaolo Bonzini const char *optstr, *h; 55155a10996SKevin Wolf char host[65]; 552baacf047SPaolo Bonzini char port[33]; 553baacf047SPaolo Bonzini int to; 554baacf047SPaolo Bonzini int pos; 555baacf047SPaolo Bonzini 556baacf047SPaolo Bonzini addr = g_new0(InetSocketAddress, 1); 557baacf047SPaolo Bonzini 558baacf047SPaolo Bonzini /* parse address */ 559baacf047SPaolo Bonzini if (str[0] == ':') { 560baacf047SPaolo Bonzini /* no host given */ 561baacf047SPaolo Bonzini host[0] = '\0'; 562baacf047SPaolo Bonzini if (1 != sscanf(str, ":%32[^,]%n", port, &pos)) { 563baacf047SPaolo Bonzini error_setg(errp, "error parsing port in address '%s'", str); 564baacf047SPaolo Bonzini goto fail; 565baacf047SPaolo Bonzini } 566baacf047SPaolo Bonzini } else if (str[0] == '[') { 567baacf047SPaolo Bonzini /* IPv6 addr */ 568baacf047SPaolo Bonzini if (2 != sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos)) { 569baacf047SPaolo Bonzini error_setg(errp, "error parsing IPv6 address '%s'", str); 570baacf047SPaolo Bonzini goto fail; 571baacf047SPaolo Bonzini } 572baacf047SPaolo Bonzini addr->ipv6 = addr->has_ipv6 = true; 573baacf047SPaolo Bonzini } else { 574391b7b97SJán Tomko /* hostname or IPv4 addr */ 575baacf047SPaolo Bonzini if (2 != sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos)) { 576baacf047SPaolo Bonzini error_setg(errp, "error parsing address '%s'", str); 577baacf047SPaolo Bonzini goto fail; 578baacf047SPaolo Bonzini } 579391b7b97SJán Tomko if (host[strspn(host, "0123456789.")] == '\0') { 580391b7b97SJán Tomko addr->ipv4 = addr->has_ipv4 = true; 581391b7b97SJán Tomko } 582baacf047SPaolo Bonzini } 583baacf047SPaolo Bonzini 584baacf047SPaolo Bonzini addr->host = g_strdup(host); 585baacf047SPaolo Bonzini addr->port = g_strdup(port); 586baacf047SPaolo Bonzini 587baacf047SPaolo Bonzini /* parse options */ 588baacf047SPaolo Bonzini optstr = str + pos; 589baacf047SPaolo Bonzini h = strstr(optstr, ",to="); 590baacf047SPaolo Bonzini if (h) { 591baacf047SPaolo Bonzini h += 4; 592baacf047SPaolo Bonzini if (sscanf(h, "%d%n", &to, &pos) != 1 || 593baacf047SPaolo Bonzini (h[pos] != '\0' && h[pos] != ',')) { 594baacf047SPaolo Bonzini error_setg(errp, "error parsing to= argument"); 595baacf047SPaolo Bonzini goto fail; 596baacf047SPaolo Bonzini } 597baacf047SPaolo Bonzini addr->has_to = true; 598baacf047SPaolo Bonzini addr->to = to; 599baacf047SPaolo Bonzini } 600baacf047SPaolo Bonzini if (strstr(optstr, ",ipv4")) { 601baacf047SPaolo Bonzini addr->ipv4 = addr->has_ipv4 = true; 602baacf047SPaolo Bonzini } 603baacf047SPaolo Bonzini if (strstr(optstr, ",ipv6")) { 604baacf047SPaolo Bonzini addr->ipv6 = addr->has_ipv6 = true; 605baacf047SPaolo Bonzini } 606baacf047SPaolo Bonzini return addr; 607baacf047SPaolo Bonzini 608baacf047SPaolo Bonzini fail: 609baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 610baacf047SPaolo Bonzini return NULL; 611baacf047SPaolo Bonzini } 612baacf047SPaolo Bonzini 613baacf047SPaolo Bonzini int inet_listen(const char *str, char *ostr, int olen, 614baacf047SPaolo Bonzini int socktype, int port_offset, Error **errp) 615baacf047SPaolo Bonzini { 616baacf047SPaolo Bonzini char *optstr; 617baacf047SPaolo Bonzini int sock = -1; 618baacf047SPaolo Bonzini InetSocketAddress *addr; 619baacf047SPaolo Bonzini 620baacf047SPaolo Bonzini addr = inet_parse(str, errp); 621baacf047SPaolo Bonzini if (addr != NULL) { 6221856835dSDaniel P. Berrange sock = inet_listen_saddr(addr, port_offset, true, errp); 623baacf047SPaolo Bonzini if (sock != -1 && ostr) { 624baacf047SPaolo Bonzini optstr = strchr(str, ','); 6251856835dSDaniel P. Berrange if (addr->ipv6) { 626baacf047SPaolo Bonzini snprintf(ostr, olen, "[%s]:%s%s", 6271856835dSDaniel P. Berrange addr->host, 6281856835dSDaniel P. Berrange addr->port, 629baacf047SPaolo Bonzini optstr ? optstr : ""); 630baacf047SPaolo Bonzini } else { 631baacf047SPaolo Bonzini snprintf(ostr, olen, "%s:%s%s", 6321856835dSDaniel P. Berrange addr->host, 6331856835dSDaniel P. Berrange addr->port, 634baacf047SPaolo Bonzini optstr ? optstr : ""); 635baacf047SPaolo Bonzini } 636baacf047SPaolo Bonzini } 6371856835dSDaniel P. Berrange qapi_free_InetSocketAddress(addr); 638baacf047SPaolo Bonzini } 639baacf047SPaolo Bonzini return sock; 640baacf047SPaolo Bonzini } 641baacf047SPaolo Bonzini 642baacf047SPaolo Bonzini /** 643baacf047SPaolo Bonzini * Create a blocking socket and connect it to an address. 644baacf047SPaolo Bonzini * 645baacf047SPaolo Bonzini * @str: address string 646baacf047SPaolo Bonzini * @errp: set in case of an error 647baacf047SPaolo Bonzini * 648baacf047SPaolo Bonzini * Returns -1 in case of error, file descriptor on success 649baacf047SPaolo Bonzini **/ 650baacf047SPaolo Bonzini int inet_connect(const char *str, Error **errp) 651baacf047SPaolo Bonzini { 652baacf047SPaolo Bonzini int sock = -1; 653baacf047SPaolo Bonzini InetSocketAddress *addr; 654baacf047SPaolo Bonzini 655baacf047SPaolo Bonzini addr = inet_parse(str, errp); 656baacf047SPaolo Bonzini if (addr != NULL) { 6572942e420SDaniel P. Berrange sock = inet_connect_saddr(addr, errp, NULL, NULL); 658baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 659baacf047SPaolo Bonzini } 660baacf047SPaolo Bonzini return sock; 661baacf047SPaolo Bonzini } 662baacf047SPaolo Bonzini 663baacf047SPaolo Bonzini /** 664baacf047SPaolo Bonzini * Create a non-blocking socket and connect it to an address. 665baacf047SPaolo Bonzini * Calls the callback function with fd in case of success or -1 in case of 666baacf047SPaolo Bonzini * error. 667baacf047SPaolo Bonzini * 668baacf047SPaolo Bonzini * @str: address string 669baacf047SPaolo Bonzini * @callback: callback function that is called when connect completes, 670baacf047SPaolo Bonzini * cannot be NULL. 671baacf047SPaolo Bonzini * @opaque: opaque for callback function 672baacf047SPaolo Bonzini * @errp: set in case of an error 673baacf047SPaolo Bonzini * 674baacf047SPaolo Bonzini * Returns: -1 on immediate error, file descriptor on success. 675baacf047SPaolo Bonzini **/ 676baacf047SPaolo Bonzini int inet_nonblocking_connect(const char *str, 677baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, 678baacf047SPaolo Bonzini void *opaque, Error **errp) 679baacf047SPaolo Bonzini { 680baacf047SPaolo Bonzini int sock = -1; 681baacf047SPaolo Bonzini InetSocketAddress *addr; 682baacf047SPaolo Bonzini 683baacf047SPaolo Bonzini g_assert(callback != NULL); 684baacf047SPaolo Bonzini 685baacf047SPaolo Bonzini addr = inet_parse(str, errp); 686baacf047SPaolo Bonzini if (addr != NULL) { 6872942e420SDaniel P. Berrange sock = inet_connect_saddr(addr, errp, callback, opaque); 688baacf047SPaolo Bonzini qapi_free_InetSocketAddress(addr); 689baacf047SPaolo Bonzini } 690baacf047SPaolo Bonzini return sock; 691baacf047SPaolo Bonzini } 692baacf047SPaolo Bonzini 693baacf047SPaolo Bonzini #ifndef _WIN32 694baacf047SPaolo Bonzini 6951856835dSDaniel P. Berrange static int unix_listen_saddr(UnixSocketAddress *saddr, 6961856835dSDaniel P. Berrange bool update_addr, 6971856835dSDaniel P. Berrange Error **errp) 698baacf047SPaolo Bonzini { 699baacf047SPaolo Bonzini struct sockaddr_un un; 700baacf047SPaolo Bonzini int sock, fd; 701baacf047SPaolo Bonzini 702baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 703baacf047SPaolo Bonzini if (sock < 0) { 704b658c53dSPaolo Bonzini error_setg_errno(errp, errno, "Failed to create Unix socket"); 705baacf047SPaolo Bonzini return -1; 706baacf047SPaolo Bonzini } 707baacf047SPaolo Bonzini 708baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 709baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 7101856835dSDaniel P. Berrange if (saddr->path && strlen(saddr->path)) { 7111856835dSDaniel P. Berrange snprintf(un.sun_path, sizeof(un.sun_path), "%s", saddr->path); 712baacf047SPaolo Bonzini } else { 713b658c53dSPaolo Bonzini const char *tmpdir = getenv("TMPDIR"); 714b658c53dSPaolo Bonzini tmpdir = tmpdir ? tmpdir : "/tmp"; 715b658c53dSPaolo Bonzini if (snprintf(un.sun_path, sizeof(un.sun_path), "%s/qemu-socket-XXXXXX", 716b658c53dSPaolo Bonzini tmpdir) >= sizeof(un.sun_path)) { 717b658c53dSPaolo Bonzini error_setg_errno(errp, errno, 718b658c53dSPaolo Bonzini "TMPDIR environment variable (%s) too large", tmpdir); 719b658c53dSPaolo Bonzini goto err; 720b658c53dSPaolo Bonzini } 721b658c53dSPaolo Bonzini 722baacf047SPaolo Bonzini /* 723baacf047SPaolo Bonzini * This dummy fd usage silences the mktemp() unsecure warning. 724baacf047SPaolo Bonzini * Using mkstemp() doesn't make things more secure here 725baacf047SPaolo Bonzini * though. bind() complains about existing files, so we have 726baacf047SPaolo Bonzini * to unlink first and thus re-open the race window. The 727baacf047SPaolo Bonzini * worst case possible is bind() failing, i.e. a DoS attack. 728baacf047SPaolo Bonzini */ 729b658c53dSPaolo Bonzini fd = mkstemp(un.sun_path); 730b658c53dSPaolo Bonzini if (fd < 0) { 731b658c53dSPaolo Bonzini error_setg_errno(errp, errno, 732b658c53dSPaolo Bonzini "Failed to make a temporary socket name in %s", tmpdir); 733b658c53dSPaolo Bonzini goto err; 734b658c53dSPaolo Bonzini } 735b658c53dSPaolo Bonzini close(fd); 7361856835dSDaniel P. Berrange if (update_addr) { 7371856835dSDaniel P. Berrange g_free(saddr->path); 7381856835dSDaniel P. Berrange saddr->path = g_strdup(un.sun_path); 7391856835dSDaniel P. Berrange } 740baacf047SPaolo Bonzini } 741baacf047SPaolo Bonzini 742a2f31f18SPaolo Bonzini if (unlink(un.sun_path) < 0 && errno != ENOENT) { 7430ef705a2SCole Robinson error_setg_errno(errp, errno, 7440ef705a2SCole Robinson "Failed to unlink socket %s", un.sun_path); 7450ef705a2SCole Robinson goto err; 7460ef705a2SCole Robinson } 747baacf047SPaolo Bonzini if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { 748b658c53dSPaolo Bonzini error_setg_errno(errp, errno, "Failed to bind socket to %s", un.sun_path); 749baacf047SPaolo Bonzini goto err; 750baacf047SPaolo Bonzini } 751baacf047SPaolo Bonzini if (listen(sock, 1) < 0) { 752235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to listen on socket"); 753baacf047SPaolo Bonzini goto err; 754baacf047SPaolo Bonzini } 755baacf047SPaolo Bonzini 756baacf047SPaolo Bonzini return sock; 757baacf047SPaolo Bonzini 758baacf047SPaolo Bonzini err: 759baacf047SPaolo Bonzini closesocket(sock); 760baacf047SPaolo Bonzini return -1; 761baacf047SPaolo Bonzini } 762baacf047SPaolo Bonzini 7632942e420SDaniel P. Berrange static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp, 764baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 765baacf047SPaolo Bonzini { 766baacf047SPaolo Bonzini struct sockaddr_un un; 767baacf047SPaolo Bonzini ConnectState *connect_state = NULL; 768baacf047SPaolo Bonzini int sock, rc; 769baacf047SPaolo Bonzini 7702942e420SDaniel P. Berrange if (saddr->path == NULL) { 771312fd5f2SMarkus Armbruster error_setg(errp, "unix connect: no path specified"); 772baacf047SPaolo Bonzini return -1; 773baacf047SPaolo Bonzini } 774baacf047SPaolo Bonzini 775baacf047SPaolo Bonzini sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); 776baacf047SPaolo Bonzini if (sock < 0) { 777235256a2SMarkus Armbruster error_setg_errno(errp, errno, "Failed to create socket"); 778baacf047SPaolo Bonzini return -1; 779baacf047SPaolo Bonzini } 780baacf047SPaolo Bonzini if (callback != NULL) { 781baacf047SPaolo Bonzini connect_state = g_malloc0(sizeof(*connect_state)); 782baacf047SPaolo Bonzini connect_state->callback = callback; 783baacf047SPaolo Bonzini connect_state->opaque = opaque; 784f9e8caccSStefan Hajnoczi qemu_set_nonblock(sock); 785baacf047SPaolo Bonzini } 786baacf047SPaolo Bonzini 787baacf047SPaolo Bonzini memset(&un, 0, sizeof(un)); 788baacf047SPaolo Bonzini un.sun_family = AF_UNIX; 7892942e420SDaniel P. Berrange snprintf(un.sun_path, sizeof(un.sun_path), "%s", saddr->path); 790baacf047SPaolo Bonzini 791baacf047SPaolo Bonzini /* connect to peer */ 792baacf047SPaolo Bonzini do { 793baacf047SPaolo Bonzini rc = 0; 794baacf047SPaolo Bonzini if (connect(sock, (struct sockaddr *) &un, sizeof(un)) < 0) { 795baacf047SPaolo Bonzini rc = -socket_error(); 796baacf047SPaolo Bonzini } 797baacf047SPaolo Bonzini } while (rc == -EINTR); 798baacf047SPaolo Bonzini 799baacf047SPaolo Bonzini if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { 800baacf047SPaolo Bonzini connect_state->fd = sock; 80182e1cc4bSFam Zheng qemu_set_fd_handler(sock, NULL, wait_for_connect, connect_state); 802baacf047SPaolo Bonzini return sock; 803baacf047SPaolo Bonzini } else if (rc >= 0) { 804baacf047SPaolo Bonzini /* non blocking socket immediate success, call callback */ 805baacf047SPaolo Bonzini if (callback != NULL) { 80651795029SCorey Minyard callback(sock, NULL, opaque); 807baacf047SPaolo Bonzini } 808baacf047SPaolo Bonzini } 809baacf047SPaolo Bonzini 810baacf047SPaolo Bonzini if (rc < 0) { 811235256a2SMarkus Armbruster error_setg_errno(errp, -rc, "Failed to connect socket"); 812baacf047SPaolo Bonzini close(sock); 813baacf047SPaolo Bonzini sock = -1; 814baacf047SPaolo Bonzini } 815baacf047SPaolo Bonzini 816baacf047SPaolo Bonzini g_free(connect_state); 817baacf047SPaolo Bonzini return sock; 818baacf047SPaolo Bonzini } 819baacf047SPaolo Bonzini 820baacf047SPaolo Bonzini #else 821baacf047SPaolo Bonzini 8221856835dSDaniel P. Berrange static int unix_listen_saddr(UnixSocketAddress *saddr, 8231856835dSDaniel P. Berrange bool update_addr, 8241856835dSDaniel P. Berrange Error **errp) 825baacf047SPaolo Bonzini { 826baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 827baacf047SPaolo Bonzini errno = ENOTSUP; 828baacf047SPaolo Bonzini return -1; 829baacf047SPaolo Bonzini } 830baacf047SPaolo Bonzini 8312942e420SDaniel P. Berrange static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp, 832baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 833baacf047SPaolo Bonzini { 834baacf047SPaolo Bonzini error_setg(errp, "unix sockets are not available on windows"); 835baacf047SPaolo Bonzini errno = ENOTSUP; 836baacf047SPaolo Bonzini return -1; 837baacf047SPaolo Bonzini } 838baacf047SPaolo Bonzini #endif 839baacf047SPaolo Bonzini 840baacf047SPaolo Bonzini /* compatibility wrapper */ 841baacf047SPaolo Bonzini int unix_listen(const char *str, char *ostr, int olen, Error **errp) 842baacf047SPaolo Bonzini { 843baacf047SPaolo Bonzini char *path, *optstr; 844baacf047SPaolo Bonzini int sock, len; 8451856835dSDaniel P. Berrange UnixSocketAddress *saddr; 846baacf047SPaolo Bonzini 8471856835dSDaniel P. Berrange saddr = g_new0(UnixSocketAddress, 1); 848baacf047SPaolo Bonzini 849baacf047SPaolo Bonzini optstr = strchr(str, ','); 850baacf047SPaolo Bonzini if (optstr) { 851baacf047SPaolo Bonzini len = optstr - str; 852baacf047SPaolo Bonzini if (len) { 853baacf047SPaolo Bonzini path = g_malloc(len+1); 854baacf047SPaolo Bonzini snprintf(path, len+1, "%.*s", len, str); 8551856835dSDaniel P. Berrange saddr->path = path; 856baacf047SPaolo Bonzini } 857baacf047SPaolo Bonzini } else { 8581856835dSDaniel P. Berrange saddr->path = g_strdup(str); 859baacf047SPaolo Bonzini } 860baacf047SPaolo Bonzini 8611856835dSDaniel P. Berrange sock = unix_listen_saddr(saddr, true, errp); 862baacf047SPaolo Bonzini 863baacf047SPaolo Bonzini if (sock != -1 && ostr) 8641856835dSDaniel P. Berrange snprintf(ostr, olen, "%s%s", saddr->path, optstr ? optstr : ""); 8651856835dSDaniel P. Berrange qapi_free_UnixSocketAddress(saddr); 866baacf047SPaolo Bonzini return sock; 867baacf047SPaolo Bonzini } 868baacf047SPaolo Bonzini 869baacf047SPaolo Bonzini int unix_connect(const char *path, Error **errp) 870baacf047SPaolo Bonzini { 8712942e420SDaniel P. Berrange UnixSocketAddress *saddr; 872baacf047SPaolo Bonzini int sock; 873baacf047SPaolo Bonzini 8742942e420SDaniel P. Berrange saddr = g_new0(UnixSocketAddress, 1); 8752942e420SDaniel P. Berrange saddr->path = g_strdup(path); 8762942e420SDaniel P. Berrange sock = unix_connect_saddr(saddr, errp, NULL, NULL); 8772942e420SDaniel P. Berrange qapi_free_UnixSocketAddress(saddr); 878baacf047SPaolo Bonzini return sock; 879baacf047SPaolo Bonzini } 880baacf047SPaolo Bonzini 881baacf047SPaolo Bonzini 882baacf047SPaolo Bonzini int unix_nonblocking_connect(const char *path, 883baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, 884baacf047SPaolo Bonzini void *opaque, Error **errp) 885baacf047SPaolo Bonzini { 8862942e420SDaniel P. Berrange UnixSocketAddress *saddr; 887baacf047SPaolo Bonzini int sock = -1; 888baacf047SPaolo Bonzini 889baacf047SPaolo Bonzini g_assert(callback != NULL); 890baacf047SPaolo Bonzini 8912942e420SDaniel P. Berrange saddr = g_new0(UnixSocketAddress, 1); 8922942e420SDaniel P. Berrange saddr->path = g_strdup(path); 8932942e420SDaniel P. Berrange sock = unix_connect_saddr(saddr, errp, callback, opaque); 8942942e420SDaniel P. Berrange qapi_free_UnixSocketAddress(saddr); 895baacf047SPaolo Bonzini return sock; 896baacf047SPaolo Bonzini } 897baacf047SPaolo Bonzini 898baacf047SPaolo Bonzini SocketAddress *socket_parse(const char *str, Error **errp) 899baacf047SPaolo Bonzini { 900afde3f8bSGerd Hoffmann SocketAddress *addr; 901baacf047SPaolo Bonzini 902afde3f8bSGerd Hoffmann addr = g_new0(SocketAddress, 1); 903baacf047SPaolo Bonzini if (strstart(str, "unix:", NULL)) { 904baacf047SPaolo Bonzini if (str[5] == '\0') { 905312fd5f2SMarkus Armbruster error_setg(errp, "invalid Unix socket address"); 906baacf047SPaolo Bonzini goto fail; 907baacf047SPaolo Bonzini } else { 9082d32addaSEric Blake addr->type = SOCKET_ADDRESS_KIND_UNIX; 9092d32addaSEric Blake addr->u.q_unix = g_new(UnixSocketAddress, 1); 9102d32addaSEric Blake addr->u.q_unix->path = g_strdup(str + 5); 911baacf047SPaolo Bonzini } 912baacf047SPaolo Bonzini } else if (strstart(str, "fd:", NULL)) { 913baacf047SPaolo Bonzini if (str[3] == '\0') { 914312fd5f2SMarkus Armbruster error_setg(errp, "invalid file descriptor address"); 915baacf047SPaolo Bonzini goto fail; 916baacf047SPaolo Bonzini } else { 9172d32addaSEric Blake addr->type = SOCKET_ADDRESS_KIND_FD; 9182d32addaSEric Blake addr->u.fd = g_new(String, 1); 9192d32addaSEric Blake addr->u.fd->str = g_strdup(str + 3); 920baacf047SPaolo Bonzini } 921baacf047SPaolo Bonzini } else { 9222d32addaSEric Blake addr->type = SOCKET_ADDRESS_KIND_INET; 9232d32addaSEric Blake addr->u.inet = inet_parse(str, errp); 9242d32addaSEric Blake if (addr->u.inet == NULL) { 925baacf047SPaolo Bonzini goto fail; 926baacf047SPaolo Bonzini } 927baacf047SPaolo Bonzini } 928baacf047SPaolo Bonzini return addr; 929baacf047SPaolo Bonzini 930baacf047SPaolo Bonzini fail: 931baacf047SPaolo Bonzini qapi_free_SocketAddress(addr); 932baacf047SPaolo Bonzini return NULL; 933baacf047SPaolo Bonzini } 934baacf047SPaolo Bonzini 935baacf047SPaolo Bonzini int socket_connect(SocketAddress *addr, Error **errp, 936baacf047SPaolo Bonzini NonBlockingConnectHandler *callback, void *opaque) 937baacf047SPaolo Bonzini { 938baacf047SPaolo Bonzini int fd; 939baacf047SPaolo Bonzini 9402d32addaSEric Blake switch (addr->type) { 941baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_INET: 9422942e420SDaniel P. Berrange fd = inet_connect_saddr(addr->u.inet, errp, callback, opaque); 943baacf047SPaolo Bonzini break; 944baacf047SPaolo Bonzini 945baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_UNIX: 9462942e420SDaniel P. Berrange fd = unix_connect_saddr(addr->u.q_unix, errp, callback, opaque); 947baacf047SPaolo Bonzini break; 948baacf047SPaolo Bonzini 949baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_FD: 9502d32addaSEric Blake fd = monitor_get_fd(cur_mon, addr->u.fd->str, errp); 951d1ec72a4SGerd Hoffmann if (fd >= 0 && callback) { 9521a751ebfSStefan Hajnoczi qemu_set_nonblock(fd); 95351795029SCorey Minyard callback(fd, NULL, opaque); 954baacf047SPaolo Bonzini } 955baacf047SPaolo Bonzini break; 956baacf047SPaolo Bonzini 957baacf047SPaolo Bonzini default: 958baacf047SPaolo Bonzini abort(); 959baacf047SPaolo Bonzini } 960baacf047SPaolo Bonzini return fd; 961baacf047SPaolo Bonzini } 962baacf047SPaolo Bonzini 963baacf047SPaolo Bonzini int socket_listen(SocketAddress *addr, Error **errp) 964baacf047SPaolo Bonzini { 965baacf047SPaolo Bonzini int fd; 966baacf047SPaolo Bonzini 9672d32addaSEric Blake switch (addr->type) { 968baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_INET: 9691856835dSDaniel P. Berrange fd = inet_listen_saddr(addr->u.inet, 0, false, errp); 970baacf047SPaolo Bonzini break; 971baacf047SPaolo Bonzini 972baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_UNIX: 9731856835dSDaniel P. Berrange fd = unix_listen_saddr(addr->u.q_unix, false, errp); 974baacf047SPaolo Bonzini break; 975baacf047SPaolo Bonzini 976baacf047SPaolo Bonzini case SOCKET_ADDRESS_KIND_FD: 9772d32addaSEric Blake fd = monitor_get_fd(cur_mon, addr->u.fd->str, errp); 978baacf047SPaolo Bonzini break; 979baacf047SPaolo Bonzini 980baacf047SPaolo Bonzini default: 981baacf047SPaolo Bonzini abort(); 982baacf047SPaolo Bonzini } 983baacf047SPaolo Bonzini return fd; 984baacf047SPaolo Bonzini } 985baacf047SPaolo Bonzini 9863ecc059dSGerd Hoffmann int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) 9873ecc059dSGerd Hoffmann { 9883ecc059dSGerd Hoffmann int fd; 9893ecc059dSGerd Hoffmann 9902d32addaSEric Blake switch (remote->type) { 9913ecc059dSGerd Hoffmann case SOCKET_ADDRESS_KIND_INET: 992*8b39910eSDaniel P. Berrange fd = inet_dgram_saddr(remote->u.inet, local ? local->u.inet : NULL, errp); 9933ecc059dSGerd Hoffmann break; 9943ecc059dSGerd Hoffmann 9953ecc059dSGerd Hoffmann default: 9963ecc059dSGerd Hoffmann error_setg(errp, "socket type unsupported for datagram"); 9977a5b6af1SGerd Hoffmann fd = -1; 9983ecc059dSGerd Hoffmann } 9993ecc059dSGerd Hoffmann return fd; 10003ecc059dSGerd Hoffmann } 100117c55decSDaniel P. Berrange 100217c55decSDaniel P. Berrange 100317c55decSDaniel P. Berrange static SocketAddress * 100417c55decSDaniel P. Berrange socket_sockaddr_to_address_inet(struct sockaddr_storage *sa, 100517c55decSDaniel P. Berrange socklen_t salen, 100617c55decSDaniel P. Berrange Error **errp) 100717c55decSDaniel P. Berrange { 100817c55decSDaniel P. Berrange char host[NI_MAXHOST]; 100917c55decSDaniel P. Berrange char serv[NI_MAXSERV]; 101017c55decSDaniel P. Berrange SocketAddress *addr; 101117c55decSDaniel P. Berrange int ret; 101217c55decSDaniel P. Berrange 101317c55decSDaniel P. Berrange ret = getnameinfo((struct sockaddr *)sa, salen, 101417c55decSDaniel P. Berrange host, sizeof(host), 101517c55decSDaniel P. Berrange serv, sizeof(serv), 101617c55decSDaniel P. Berrange NI_NUMERICHOST | NI_NUMERICSERV); 101717c55decSDaniel P. Berrange if (ret != 0) { 101817c55decSDaniel P. Berrange error_setg(errp, "Cannot format numeric socket address: %s", 101917c55decSDaniel P. Berrange gai_strerror(ret)); 102017c55decSDaniel P. Berrange return NULL; 102117c55decSDaniel P. Berrange } 102217c55decSDaniel P. Berrange 102317c55decSDaniel P. Berrange addr = g_new0(SocketAddress, 1); 10242d32addaSEric Blake addr->type = SOCKET_ADDRESS_KIND_INET; 10252d32addaSEric Blake addr->u.inet = g_new0(InetSocketAddress, 1); 10262d32addaSEric Blake addr->u.inet->host = g_strdup(host); 10272d32addaSEric Blake addr->u.inet->port = g_strdup(serv); 102817c55decSDaniel P. Berrange if (sa->ss_family == AF_INET) { 10292d32addaSEric Blake addr->u.inet->has_ipv4 = addr->u.inet->ipv4 = true; 103017c55decSDaniel P. Berrange } else { 10312d32addaSEric Blake addr->u.inet->has_ipv6 = addr->u.inet->ipv6 = true; 103217c55decSDaniel P. Berrange } 103317c55decSDaniel P. Berrange 103417c55decSDaniel P. Berrange return addr; 103517c55decSDaniel P. Berrange } 103617c55decSDaniel P. Berrange 103717c55decSDaniel P. Berrange 103817c55decSDaniel P. Berrange #ifndef WIN32 103917c55decSDaniel P. Berrange static SocketAddress * 104017c55decSDaniel P. Berrange socket_sockaddr_to_address_unix(struct sockaddr_storage *sa, 104117c55decSDaniel P. Berrange socklen_t salen, 104217c55decSDaniel P. Berrange Error **errp) 104317c55decSDaniel P. Berrange { 104417c55decSDaniel P. Berrange SocketAddress *addr; 104517c55decSDaniel P. Berrange struct sockaddr_un *su = (struct sockaddr_un *)sa; 104617c55decSDaniel P. Berrange 104717c55decSDaniel P. Berrange addr = g_new0(SocketAddress, 1); 10482d32addaSEric Blake addr->type = SOCKET_ADDRESS_KIND_UNIX; 10492d32addaSEric Blake addr->u.q_unix = g_new0(UnixSocketAddress, 1); 105017c55decSDaniel P. Berrange if (su->sun_path[0]) { 10512d32addaSEric Blake addr->u.q_unix->path = g_strndup(su->sun_path, 105217c55decSDaniel P. Berrange sizeof(su->sun_path)); 105317c55decSDaniel P. Berrange } 105417c55decSDaniel P. Berrange 105517c55decSDaniel P. Berrange return addr; 105617c55decSDaniel P. Berrange } 105717c55decSDaniel P. Berrange #endif /* WIN32 */ 105817c55decSDaniel P. Berrange 1059559607eaSDaniel P. Berrange SocketAddress * 106017c55decSDaniel P. Berrange socket_sockaddr_to_address(struct sockaddr_storage *sa, 106117c55decSDaniel P. Berrange socklen_t salen, 106217c55decSDaniel P. Berrange Error **errp) 106317c55decSDaniel P. Berrange { 106417c55decSDaniel P. Berrange switch (sa->ss_family) { 106517c55decSDaniel P. Berrange case AF_INET: 106617c55decSDaniel P. Berrange case AF_INET6: 106717c55decSDaniel P. Berrange return socket_sockaddr_to_address_inet(sa, salen, errp); 106817c55decSDaniel P. Berrange 106917c55decSDaniel P. Berrange #ifndef WIN32 107017c55decSDaniel P. Berrange case AF_UNIX: 107117c55decSDaniel P. Berrange return socket_sockaddr_to_address_unix(sa, salen, errp); 107217c55decSDaniel P. Berrange #endif /* WIN32 */ 107317c55decSDaniel P. Berrange 107417c55decSDaniel P. Berrange default: 107517c55decSDaniel P. Berrange error_setg(errp, "socket family %d unsupported", 107617c55decSDaniel P. Berrange sa->ss_family); 107717c55decSDaniel P. Berrange return NULL; 107817c55decSDaniel P. Berrange } 107917c55decSDaniel P. Berrange return 0; 108017c55decSDaniel P. Berrange } 108117c55decSDaniel P. Berrange 108217c55decSDaniel P. Berrange 108317c55decSDaniel P. Berrange SocketAddress *socket_local_address(int fd, Error **errp) 108417c55decSDaniel P. Berrange { 108517c55decSDaniel P. Berrange struct sockaddr_storage ss; 108617c55decSDaniel P. Berrange socklen_t sslen = sizeof(ss); 108717c55decSDaniel P. Berrange 108817c55decSDaniel P. Berrange if (getsockname(fd, (struct sockaddr *)&ss, &sslen) < 0) { 108917c55decSDaniel P. Berrange error_setg_errno(errp, socket_error(), "%s", 109017c55decSDaniel P. Berrange "Unable to query local socket address"); 109117c55decSDaniel P. Berrange return NULL; 109217c55decSDaniel P. Berrange } 109317c55decSDaniel P. Berrange 109417c55decSDaniel P. Berrange return socket_sockaddr_to_address(&ss, sslen, errp); 109517c55decSDaniel P. Berrange } 109617c55decSDaniel P. Berrange 109717c55decSDaniel P. Berrange 109817c55decSDaniel P. Berrange SocketAddress *socket_remote_address(int fd, Error **errp) 109917c55decSDaniel P. Berrange { 110017c55decSDaniel P. Berrange struct sockaddr_storage ss; 110117c55decSDaniel P. Berrange socklen_t sslen = sizeof(ss); 110217c55decSDaniel P. Berrange 110317c55decSDaniel P. Berrange if (getpeername(fd, (struct sockaddr *)&ss, &sslen) < 0) { 110417c55decSDaniel P. Berrange error_setg_errno(errp, socket_error(), "%s", 110517c55decSDaniel P. Berrange "Unable to query remote socket address"); 110617c55decSDaniel P. Berrange return NULL; 110717c55decSDaniel P. Berrange } 110817c55decSDaniel P. Berrange 110917c55decSDaniel P. Berrange return socket_sockaddr_to_address(&ss, sslen, errp); 111017c55decSDaniel P. Berrange } 11112a8e21c7SDaniel P. Berrange 11122a8e21c7SDaniel P. Berrange 11132a8e21c7SDaniel P. Berrange void qapi_copy_SocketAddress(SocketAddress **p_dest, 11142a8e21c7SDaniel P. Berrange SocketAddress *src) 11152a8e21c7SDaniel P. Berrange { 11162a8e21c7SDaniel P. Berrange QmpOutputVisitor *qov; 11172a8e21c7SDaniel P. Berrange QmpInputVisitor *qiv; 11182a8e21c7SDaniel P. Berrange Visitor *ov, *iv; 11192a8e21c7SDaniel P. Berrange QObject *obj; 11202a8e21c7SDaniel P. Berrange 11212a8e21c7SDaniel P. Berrange *p_dest = NULL; 11222a8e21c7SDaniel P. Berrange 11232a8e21c7SDaniel P. Berrange qov = qmp_output_visitor_new(); 11242a8e21c7SDaniel P. Berrange ov = qmp_output_get_visitor(qov); 11252a8e21c7SDaniel P. Berrange visit_type_SocketAddress(ov, &src, NULL, &error_abort); 11262a8e21c7SDaniel P. Berrange obj = qmp_output_get_qobject(qov); 11272a8e21c7SDaniel P. Berrange qmp_output_visitor_cleanup(qov); 11282a8e21c7SDaniel P. Berrange if (!obj) { 11292a8e21c7SDaniel P. Berrange return; 11302a8e21c7SDaniel P. Berrange } 11312a8e21c7SDaniel P. Berrange 11322a8e21c7SDaniel P. Berrange qiv = qmp_input_visitor_new(obj); 11332a8e21c7SDaniel P. Berrange iv = qmp_input_get_visitor(qiv); 11342a8e21c7SDaniel P. Berrange visit_type_SocketAddress(iv, p_dest, NULL, &error_abort); 11352a8e21c7SDaniel P. Berrange qmp_input_visitor_cleanup(qiv); 11362a8e21c7SDaniel P. Berrange qobject_decref(obj); 11372a8e21c7SDaniel P. Berrange } 1138