static void inet_print_addrinfo(const char *tag, struct addrinfo *res) { struct addrinfo *e; char uaddr[INET6_ADDRSTRLEN+1]; char uport[33]; for (e = res; e != NULL; e = e->ai_next) { getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, uaddr,INET6_ADDRSTRLEN,uport,32, NI_NUMERICHOST | NI_NUMERICSERV); fprintf(stderr,"%s: getaddrinfo: family %s, host %s, port %s\n", tag, inet_strfamily(e->ai_family), uaddr, uport); } }
static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, ConnectState *connect_state) { int sock, rc; *in_progress = false; sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); if (sock < 0) { fprintf(stderr, "%s: socket(%s): %s\n", __func__, inet_strfamily(addr->ai_family), strerror(errno)); return -1; } qemu_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)); if (connect_state != NULL) { socket_set_nonblock(sock); } /* connect to peer */ do { rc = 0; if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { rc = -socket_error(); } } while (rc == -EINTR); if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { connect_state->fd = sock; qemu_set_fd_handler2(sock, NULL, NULL, wait_for_connect, connect_state); *in_progress = true; } else if (rc < 0) { closesocket(sock); return -1; } return sock; }
int inet_dgram_opts(QemuOpts *opts) { struct addrinfo ai, *peer = NULL, *local = NULL; const char *addr; const char *port; char uaddr[INET6_ADDRSTRLEN+1]; char uport[33]; int sock = -1, rc; /* lookup peer addr */ memset(&ai,0, sizeof(ai)); ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; ai.ai_family = PF_UNSPEC; ai.ai_socktype = SOCK_DGRAM; addr = qemu_opt_get(opts, "host"); port = qemu_opt_get(opts, "port"); if (addr == NULL || strlen(addr) == 0) { addr = "localhost"; } if (port == NULL || strlen(port) == 0) { fprintf(stderr, "inet_dgram: port not specified\n"); return -1; } if (qemu_opt_get_bool(opts, "ipv4", 0)) ai.ai_family = PF_INET; if (qemu_opt_get_bool(opts, "ipv6", 0)) ai.ai_family = PF_INET6; if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) { fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port, gai_strerror(rc)); return -1; } if (sockets_debug) { fprintf(stderr, "%s: peer (%s:%s)\n", __FUNCTION__, addr, port); inet_print_addrinfo(__FUNCTION__, peer); } /* lookup local addr */ memset(&ai,0, sizeof(ai)); ai.ai_flags = AI_PASSIVE; ai.ai_family = peer->ai_family; ai.ai_socktype = SOCK_DGRAM; addr = qemu_opt_get(opts, "localaddr"); port = qemu_opt_get(opts, "localport"); if (addr == NULL || strlen(addr) == 0) { addr = NULL; } if (!port || strlen(port) == 0) port = "0"; if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) { fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port, gai_strerror(rc)); return -1; } if (sockets_debug) { fprintf(stderr, "%s: local (%s:%s)\n", __FUNCTION__, addr, port); inet_print_addrinfo(__FUNCTION__, local); } /* create socket */ sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); if (sock < 0) { fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__, inet_strfamily(peer->ai_family), strerror(errno)); goto err; } setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on)); /* bind socket */ if (getnameinfo((struct sockaddr*)local->ai_addr,local->ai_addrlen, uaddr,INET6_ADDRSTRLEN,uport,32, NI_NUMERICHOST | NI_NUMERICSERV) != 0) { fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__); goto err; } if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { fprintf(stderr,"%s: bind(%s,%s,%d): OK\n", __FUNCTION__, inet_strfamily(local->ai_family), uaddr, inet_getport(local)); goto err; } /* connect to peer */ if (getnameinfo((struct sockaddr*)peer->ai_addr, peer->ai_addrlen, uaddr, INET6_ADDRSTRLEN, uport, 32, NI_NUMERICHOST | NI_NUMERICSERV) != 0) { fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__); goto err; } if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__, inet_strfamily(peer->ai_family), peer->ai_canonname, uaddr, uport, strerror(errno)); goto err; } freeaddrinfo(local); freeaddrinfo(peer); return sock; err: if (-1 != sock) closesocket(sock); if (local) freeaddrinfo(local); if (peer) freeaddrinfo(peer); return -1; }
int inet_connect_opts(QemuOpts *opts) { struct addrinfo ai,*res,*e; const char *addr; const char *port; char uaddr[INET6_ADDRSTRLEN+1]; char uport[33]; int sock,rc; memset(&ai,0, sizeof(ai)); ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; ai.ai_family = PF_UNSPEC; ai.ai_socktype = SOCK_STREAM; addr = qemu_opt_get(opts, "host"); port = qemu_opt_get(opts, "port"); if (addr == NULL || port == NULL) { fprintf(stderr, "inet_connect: host and/or port not specified\n"); return -1; } if (qemu_opt_get_bool(opts, "ipv4", 0)) ai.ai_family = PF_INET; if (qemu_opt_get_bool(opts, "ipv6", 0)) ai.ai_family = PF_INET6; /* lookup */ if (0 != (rc = getaddrinfo(addr, port, &ai, &res))) { fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port, gai_strerror(rc)); return -1; } if (sockets_debug) inet_print_addrinfo(__FUNCTION__, res); for (e = res; e != NULL; e = e->ai_next) { if (getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, uaddr,INET6_ADDRSTRLEN,uport,32, NI_NUMERICHOST | NI_NUMERICSERV) != 0) { fprintf(stderr,"%s: getnameinfo: oops\n", __FUNCTION__); continue; } sock = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); if (sock < 0) { fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__, inet_strfamily(e->ai_family), strerror(errno)); continue; } setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on)); /* connect to peer */ if (connect(sock,e->ai_addr,e->ai_addrlen) < 0) { if (sockets_debug || NULL == e->ai_next) fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__, inet_strfamily(e->ai_family), e->ai_canonname, uaddr, uport, strerror(errno)); closesocket(sock); continue; } if (sockets_debug) fprintf(stderr, "%s: connect(%s,%s,%s,%s): OK\n", __FUNCTION__, inet_strfamily(e->ai_family), e->ai_canonname, uaddr, uport); freeaddrinfo(res); return sock; } freeaddrinfo(res); return -1; }
int inet_listen_opts(QemuOpts *opts, int port_offset) { struct addrinfo ai,*res,*e; const char *addr; char port[33]; char uaddr[INET6_ADDRSTRLEN+1]; char uport[33]; int slisten,rc,to,try_next; memset(&ai,0, sizeof(ai)); ai.ai_flags = AI_PASSIVE | AI_ADDRCONFIG; ai.ai_family = PF_UNSPEC; ai.ai_socktype = SOCK_STREAM; if ((qemu_opt_get(opts, "host") == NULL) || (qemu_opt_get(opts, "port") == NULL)) { fprintf(stderr, "%s: host and/or port not specified\n", __FUNCTION__); return -1; } pstrcpy(port, sizeof(port), qemu_opt_get(opts, "port")); addr = qemu_opt_get(opts, "host"); to = qemu_opt_get_number(opts, "to", 0); if (qemu_opt_get_bool(opts, "ipv4", 0)) ai.ai_family = PF_INET; if (qemu_opt_get_bool(opts, "ipv6", 0)) ai.ai_family = PF_INET6; /* lookup */ if (port_offset) snprintf(port, sizeof(port), "%d", atoi(port) + port_offset); rc = getaddrinfo(strlen(addr) ? addr : NULL, port, &ai, &res); if (rc != 0) { fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port, gai_strerror(rc)); return -1; } if (sockets_debug) inet_print_addrinfo(__FUNCTION__, res); /* create socket + bind */ for (e = res; e != NULL; e = e->ai_next) { getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, uaddr,INET6_ADDRSTRLEN,uport,32, NI_NUMERICHOST | NI_NUMERICSERV); slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); if (slisten < 0) { fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__, inet_strfamily(e->ai_family), strerror(errno)); continue; } setsockopt(slisten,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on)); #ifdef IPV6_V6ONLY if (e->ai_family == PF_INET6) { /* listen on both ipv4 and ipv6 */ setsockopt(slisten,IPPROTO_IPV6,IPV6_V6ONLY,(void*)&off, sizeof(off)); } #endif for (;;) { if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) { if (sockets_debug) fprintf(stderr,"%s: bind(%s,%s,%d): OK\n", __FUNCTION__, inet_strfamily(e->ai_family), uaddr, inet_getport(e)); goto listen; } try_next = to && (inet_getport(e) <= to + port_offset); if (!try_next || sockets_debug) fprintf(stderr,"%s: bind(%s,%s,%d): %s\n", __FUNCTION__, inet_strfamily(e->ai_family), uaddr, inet_getport(e), strerror(errno)); if (try_next) { inet_setport(e, inet_getport(e) + 1); continue; } break; } closesocket(slisten); } fprintf(stderr, "%s: FAILED\n", __FUNCTION__); freeaddrinfo(res); return -1; listen: if (listen(slisten,1) != 0) { perror("listen"); closesocket(slisten); freeaddrinfo(res); return -1; } snprintf(uport, sizeof(uport), "%d", inet_getport(e) - port_offset); qemu_opt_set(opts, "host", uaddr); qemu_opt_set(opts, "port", uport); qemu_opt_set(opts, "ipv6", (e->ai_family == PF_INET6) ? "on" : "off"); qemu_opt_set(opts, "ipv4", (e->ai_family != PF_INET6) ? "on" : "off"); freeaddrinfo(res); return slisten; }
int inet_connect_opts(QemuOpts *opts, Error **errp) { struct addrinfo ai,*res,*e; const char *addr; const char *port; char uaddr[INET6_ADDRSTRLEN+1]; char uport[33]; int sock,rc; bool block; memset(&ai,0, sizeof(ai)); ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; ai.ai_family = PF_UNSPEC; ai.ai_socktype = SOCK_STREAM; addr = qemu_opt_get(opts, "host"); port = qemu_opt_get(opts, "port"); block = qemu_opt_get_bool(opts, "block", 0); if (addr == NULL || port == NULL) { fprintf(stderr, "inet_connect: host and/or port not specified\n"); error_set(errp, QERR_SOCKET_CREATE_FAILED); return -1; } if (qemu_opt_get_bool(opts, "ipv4", 0)) ai.ai_family = PF_INET; if (qemu_opt_get_bool(opts, "ipv6", 0)) ai.ai_family = PF_INET6; /* lookup */ if (0 != (rc = getaddrinfo(addr, port, &ai, &res))) { fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port, gai_strerror(rc)); error_set(errp, QERR_SOCKET_CREATE_FAILED); return -1; } for (e = res; e != NULL; e = e->ai_next) { if (getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, uaddr,INET6_ADDRSTRLEN,uport,32, NI_NUMERICHOST | NI_NUMERICSERV) != 0) { fprintf(stderr,"%s: getnameinfo: oops\n", __FUNCTION__); continue; } sock = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); if (sock < 0) { fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__, inet_strfamily(e->ai_family), strerror(errno)); continue; } setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on)); if (!block) { socket_set_nonblock(sock); } /* connect to peer */ do { rc = 0; if (connect(sock, e->ai_addr, e->ai_addrlen) < 0) { rc = -socket_error(); } } while (rc == -EINTR); #ifdef _WIN32 if (!block && (rc == -EINPROGRESS || rc == -EWOULDBLOCK || rc == -WSAEALREADY)) { #else if (!block && (rc == -EINPROGRESS)) { #endif error_set(errp, QERR_SOCKET_CONNECT_IN_PROGRESS); } else if (rc < 0) { if (NULL == e->ai_next) fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__, inet_strfamily(e->ai_family), e->ai_canonname, uaddr, uport, strerror(errno)); closesocket(sock); sock = -1; continue; } freeaddrinfo(res); return sock; } error_set(errp, QERR_SOCKET_CONNECT_FAILED); freeaddrinfo(res); return -1; } int inet_dgram_opts(QemuOpts *opts) { struct addrinfo ai, *peer = NULL, *local = NULL; const char *addr; const char *port; char uaddr[INET6_ADDRSTRLEN+1]; char uport[33]; int sock = -1, rc; /* lookup peer addr */ memset(&ai,0, sizeof(ai)); ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; ai.ai_family = PF_UNSPEC; ai.ai_socktype = SOCK_DGRAM; addr = qemu_opt_get(opts, "host"); port = qemu_opt_get(opts, "port"); if (addr == NULL || strlen(addr) == 0) { addr = "localhost"; } if (port == NULL || strlen(port) == 0) { fprintf(stderr, "inet_dgram: port not specified\n"); return -1; } if (qemu_opt_get_bool(opts, "ipv4", 0)) ai.ai_family = PF_INET; if (qemu_opt_get_bool(opts, "ipv6", 0)) ai.ai_family = PF_INET6; if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) { fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port, gai_strerror(rc)); return -1; } /* lookup local addr */ memset(&ai,0, sizeof(ai)); ai.ai_flags = AI_PASSIVE; ai.ai_family = peer->ai_family; ai.ai_socktype = SOCK_DGRAM; addr = qemu_opt_get(opts, "localaddr"); port = qemu_opt_get(opts, "localport"); if (addr == NULL || strlen(addr) == 0) { addr = NULL; } if (!port || strlen(port) == 0) port = "0"; if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) { fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port, gai_strerror(rc)); return -1; } /* create socket */ sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); if (sock < 0) { fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__, inet_strfamily(peer->ai_family), strerror(errno)); goto err; } setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on)); /* bind socket */ if (getnameinfo((struct sockaddr*)local->ai_addr,local->ai_addrlen, uaddr,INET6_ADDRSTRLEN,uport,32, NI_NUMERICHOST | NI_NUMERICSERV) != 0) { fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__); goto err; } if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { fprintf(stderr,"%s: bind(%s,%s,%d): OK\n", __FUNCTION__, inet_strfamily(local->ai_family), uaddr, inet_getport(local)); goto err; } /* connect to peer */ if (getnameinfo((struct sockaddr*)peer->ai_addr, peer->ai_addrlen, uaddr, INET6_ADDRSTRLEN, uport, 32, NI_NUMERICHOST | NI_NUMERICSERV) != 0) { fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__); goto err; } if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__, inet_strfamily(peer->ai_family), peer->ai_canonname, uaddr, uport, strerror(errno)); goto err; } freeaddrinfo(local); freeaddrinfo(peer); return sock; err: if (-1 != sock) closesocket(sock); if (local) freeaddrinfo(local); if (peer) freeaddrinfo(peer); return -1; } /* compatibility wrapper */ static int inet_parse(QemuOpts *opts, const char *str) { const char *optstr, *h; char addr[64]; char port[33]; int pos; /* parse address */ if (str[0] == ':') { /* no host given */ addr[0] = '\0'; if (1 != sscanf(str,":%32[^,]%n",port,&pos)) { fprintf(stderr, "%s: portonly parse error (%s)\n", __FUNCTION__, str); return -1; } } else if (str[0] == '[') { /* IPv6 addr */ if (2 != sscanf(str,"[%64[^]]]:%32[^,]%n",addr,port,&pos)) { fprintf(stderr, "%s: ipv6 parse error (%s)\n", __FUNCTION__, str); return -1; } qemu_opt_set(opts, "ipv6", "on"); } else if (qemu_isdigit(str[0])) { /* IPv4 addr */ if (2 != sscanf(str,"%64[0-9.]:%32[^,]%n",addr,port,&pos)) { fprintf(stderr, "%s: ipv4 parse error (%s)\n", __FUNCTION__, str); return -1; } qemu_opt_set(opts, "ipv4", "on"); } else { /* hostname */ if (2 != sscanf(str,"%64[^:]:%32[^,]%n",addr,port,&pos)) { fprintf(stderr, "%s: hostname parse error (%s)\n", __FUNCTION__, str); return -1; } } qemu_opt_set(opts, "host", addr); qemu_opt_set(opts, "port", port); /* parse options */ optstr = str + pos; h = strstr(optstr, ",to="); if (h) qemu_opt_set(opts, "to", h+4); if (strstr(optstr, ",ipv4")) qemu_opt_set(opts, "ipv4", "on"); if (strstr(optstr, ",ipv6")) qemu_opt_set(opts, "ipv6", "on"); return 0; } int inet_listen(const char *str, char *ostr, int olen, int socktype, int port_offset, Error **errp) { QemuOpts *opts; char *optstr; int sock = -1; opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL); if (inet_parse(opts, str) == 0) { sock = inet_listen_opts(opts, port_offset, errp); if (sock != -1 && ostr) { optstr = strchr(str, ','); if (qemu_opt_get_bool(opts, "ipv6", 0)) { snprintf(ostr, olen, "[%s]:%s%s", qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"), optstr ? optstr : ""); } else { snprintf(ostr, olen, "%s:%s%s", qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"), optstr ? optstr : ""); } } } else { error_set(errp, QERR_SOCKET_CREATE_FAILED); } qemu_opts_del(opts); return sock; }