aliguori | 305b0eb | 2008-11-13 16:19:54 +0000 | [diff] [blame] | 1 | /* |
| 2 | * inet and unix socket functions for qemu |
| 3 | * |
| 4 | * (c) 2008 Gerd Hoffmann <kraxel@redhat.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; under version 2 of the License. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
Paolo Bonzini | e6d91ab | 2012-07-09 11:08:39 +0200 | [diff] [blame] | 14 | * |
| 15 | * Contributions after 2012-01-13 are licensed under the terms of the |
| 16 | * GNU GPL, version 2 or (at your option) any later version. |
aliguori | 305b0eb | 2008-11-13 16:19:54 +0000 | [diff] [blame] | 17 | */ |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 18 | #include <stdio.h> |
| 19 | #include <stdlib.h> |
| 20 | #include <string.h> |
| 21 | #include <ctype.h> |
| 22 | #include <errno.h> |
| 23 | #include <unistd.h> |
| 24 | |
Paolo Bonzini | 83c9089 | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 25 | #include "monitor/monitor.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 26 | #include "qemu/sockets.h" |
blueswir1 | 47398b9 | 2008-11-22 20:04:24 +0000 | [diff] [blame] | 27 | #include "qemu-common.h" /* for qemu_isdigit */ |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 28 | #include "qemu/main-loop.h" |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 29 | |
| 30 | #ifndef AI_ADDRCONFIG |
| 31 | # define AI_ADDRCONFIG 0 |
| 32 | #endif |
| 33 | |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 34 | static const int on=1, off=0; |
| 35 | |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 36 | /* used temporarely until all users are converted to QemuOpts */ |
Blue Swirl | c139090 | 2009-09-12 09:58:51 +0000 | [diff] [blame] | 37 | static QemuOptsList dummy_opts = { |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 38 | .name = "dummy", |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 39 | .head = QTAILQ_HEAD_INITIALIZER(dummy_opts.head), |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 40 | .desc = { |
| 41 | { |
| 42 | .name = "path", |
| 43 | .type = QEMU_OPT_STRING, |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 44 | },{ |
| 45 | .name = "host", |
| 46 | .type = QEMU_OPT_STRING, |
| 47 | },{ |
| 48 | .name = "port", |
| 49 | .type = QEMU_OPT_STRING, |
| 50 | },{ |
| 51 | .name = "to", |
| 52 | .type = QEMU_OPT_NUMBER, |
| 53 | },{ |
| 54 | .name = "ipv4", |
| 55 | .type = QEMU_OPT_BOOL, |
| 56 | },{ |
| 57 | .name = "ipv6", |
| 58 | .type = QEMU_OPT_BOOL, |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 59 | }, |
| 60 | { /* end if list */ } |
| 61 | }, |
| 62 | }; |
| 63 | |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 64 | static int inet_getport(struct addrinfo *e) |
| 65 | { |
| 66 | struct sockaddr_in *i4; |
| 67 | struct sockaddr_in6 *i6; |
| 68 | |
| 69 | switch (e->ai_family) { |
| 70 | case PF_INET6: |
| 71 | i6 = (void*)e->ai_addr; |
| 72 | return ntohs(i6->sin6_port); |
| 73 | case PF_INET: |
| 74 | i4 = (void*)e->ai_addr; |
| 75 | return ntohs(i4->sin_port); |
| 76 | default: |
| 77 | return 0; |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | static void inet_setport(struct addrinfo *e, int port) |
| 82 | { |
| 83 | struct sockaddr_in *i4; |
| 84 | struct sockaddr_in6 *i6; |
| 85 | |
| 86 | switch (e->ai_family) { |
| 87 | case PF_INET6: |
| 88 | i6 = (void*)e->ai_addr; |
| 89 | i6->sin6_port = htons(port); |
| 90 | break; |
| 91 | case PF_INET: |
| 92 | i4 = (void*)e->ai_addr; |
| 93 | i4->sin_port = htons(port); |
| 94 | break; |
| 95 | } |
| 96 | } |
| 97 | |
Luiz Capitulino | c9c4b34 | 2010-01-20 11:42:38 -0200 | [diff] [blame] | 98 | const char *inet_strfamily(int family) |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 99 | { |
| 100 | switch (family) { |
| 101 | case PF_INET6: return "ipv6"; |
| 102 | case PF_INET: return "ipv4"; |
| 103 | case PF_UNIX: return "unix"; |
| 104 | } |
Luiz Capitulino | c445321 | 2010-01-20 11:42:39 -0200 | [diff] [blame] | 105 | return "unknown"; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 106 | } |
| 107 | |
Amos Kong | 029409e | 2012-05-11 00:28:26 +0800 | [diff] [blame] | 108 | int inet_listen_opts(QemuOpts *opts, int port_offset, Error **errp) |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 109 | { |
| 110 | struct addrinfo ai,*res,*e; |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 111 | const char *addr; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 112 | char port[33]; |
| 113 | char uaddr[INET6_ADDRSTRLEN+1]; |
| 114 | char uport[33]; |
Markus Armbruster | 877691f | 2012-02-07 15:09:15 +0100 | [diff] [blame] | 115 | int slisten, rc, to, port_min, port_max, p; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 116 | |
| 117 | memset(&ai,0, sizeof(ai)); |
| 118 | ai.ai_flags = AI_PASSIVE | AI_ADDRCONFIG; |
| 119 | ai.ai_family = PF_UNSPEC; |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 120 | ai.ai_socktype = SOCK_STREAM; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 121 | |
Jens Osterkamp | e23a22e | 2010-04-12 10:51:01 +0200 | [diff] [blame] | 122 | if ((qemu_opt_get(opts, "host") == NULL) || |
| 123 | (qemu_opt_get(opts, "port") == NULL)) { |
Paolo Bonzini | a12fb8a | 2012-10-02 09:18:02 +0200 | [diff] [blame] | 124 | error_setg(errp, "host and/or port not specified"); |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 125 | return -1; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 126 | } |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 127 | pstrcpy(port, sizeof(port), qemu_opt_get(opts, "port")); |
| 128 | addr = qemu_opt_get(opts, "host"); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 129 | |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 130 | to = qemu_opt_get_number(opts, "to", 0); |
| 131 | if (qemu_opt_get_bool(opts, "ipv4", 0)) |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 132 | ai.ai_family = PF_INET; |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 133 | if (qemu_opt_get_bool(opts, "ipv6", 0)) |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 134 | ai.ai_family = PF_INET6; |
| 135 | |
| 136 | /* lookup */ |
| 137 | if (port_offset) |
| 138 | snprintf(port, sizeof(port), "%d", atoi(port) + port_offset); |
| 139 | rc = getaddrinfo(strlen(addr) ? addr : NULL, port, &ai, &res); |
| 140 | if (rc != 0) { |
Paolo Bonzini | a12fb8a | 2012-10-02 09:18:02 +0200 | [diff] [blame] | 141 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
| 142 | gai_strerror(rc)); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 143 | return -1; |
| 144 | } |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 145 | |
| 146 | /* create socket + bind */ |
| 147 | for (e = res; e != NULL; e = e->ai_next) { |
vibi | 39b6efc | 2009-05-06 15:27:03 +0530 | [diff] [blame] | 148 | getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, |
| 149 | uaddr,INET6_ADDRSTRLEN,uport,32, |
| 150 | NI_NUMERICHOST | NI_NUMERICSERV); |
Kevin Wolf | 40ff6d7 | 2009-12-02 12:24:42 +0100 | [diff] [blame] | 151 | slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); |
vibi | 39b6efc | 2009-05-06 15:27:03 +0530 | [diff] [blame] | 152 | if (slisten < 0) { |
Amos Kong | 029409e | 2012-05-11 00:28:26 +0800 | [diff] [blame] | 153 | if (!e->ai_next) { |
Paolo Bonzini | a12fb8a | 2012-10-02 09:18:02 +0200 | [diff] [blame] | 154 | error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); |
Amos Kong | 029409e | 2012-05-11 00:28:26 +0800 | [diff] [blame] | 155 | } |
vibi | 39b6efc | 2009-05-06 15:27:03 +0530 | [diff] [blame] | 156 | continue; |
| 157 | } |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 158 | |
| 159 | setsockopt(slisten,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on)); |
| 160 | #ifdef IPV6_V6ONLY |
| 161 | if (e->ai_family == PF_INET6) { |
| 162 | /* listen on both ipv4 and ipv6 */ |
vibi | 39b6efc | 2009-05-06 15:27:03 +0530 | [diff] [blame] | 163 | setsockopt(slisten,IPPROTO_IPV6,IPV6_V6ONLY,(void*)&off, |
| 164 | sizeof(off)); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 165 | } |
| 166 | #endif |
| 167 | |
Markus Armbruster | 877691f | 2012-02-07 15:09:15 +0100 | [diff] [blame] | 168 | port_min = inet_getport(e); |
| 169 | port_max = to ? to + port_offset : port_min; |
| 170 | for (p = port_min; p <= port_max; p++) { |
| 171 | inet_setport(e, p); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 172 | if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) { |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 173 | goto listen; |
| 174 | } |
Markus Armbruster | 877691f | 2012-02-07 15:09:15 +0100 | [diff] [blame] | 175 | if (p == port_max) { |
Amos Kong | 029409e | 2012-05-11 00:28:26 +0800 | [diff] [blame] | 176 | if (!e->ai_next) { |
Paolo Bonzini | a12fb8a | 2012-10-02 09:18:02 +0200 | [diff] [blame] | 177 | error_set_errno(errp, errno, QERR_SOCKET_BIND_FAILED); |
Amos Kong | 029409e | 2012-05-11 00:28:26 +0800 | [diff] [blame] | 178 | } |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 179 | } |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 180 | } |
| 181 | closesocket(slisten); |
| 182 | } |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 183 | freeaddrinfo(res); |
| 184 | return -1; |
| 185 | |
| 186 | listen: |
| 187 | if (listen(slisten,1) != 0) { |
Paolo Bonzini | a12fb8a | 2012-10-02 09:18:02 +0200 | [diff] [blame] | 188 | error_set_errno(errp, errno, QERR_SOCKET_LISTEN_FAILED); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 189 | closesocket(slisten); |
vibi | 39b6efc | 2009-05-06 15:27:03 +0530 | [diff] [blame] | 190 | freeaddrinfo(res); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 191 | return -1; |
| 192 | } |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 193 | snprintf(uport, sizeof(uport), "%d", inet_getport(e) - port_offset); |
| 194 | qemu_opt_set(opts, "host", uaddr); |
| 195 | qemu_opt_set(opts, "port", uport); |
| 196 | qemu_opt_set(opts, "ipv6", (e->ai_family == PF_INET6) ? "on" : "off"); |
| 197 | qemu_opt_set(opts, "ipv4", (e->ai_family != PF_INET6) ? "on" : "off"); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 198 | freeaddrinfo(res); |
| 199 | return slisten; |
| 200 | } |
| 201 | |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 202 | #ifdef _WIN32 |
| 203 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ |
| 204 | ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) |
| 205 | #else |
| 206 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ |
| 207 | ((rc) == -EINPROGRESS) |
| 208 | #endif |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 209 | |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 210 | /* Struct to store connect state for non blocking connect */ |
| 211 | typedef struct ConnectState { |
| 212 | int fd; |
| 213 | struct addrinfo *addr_list; |
| 214 | struct addrinfo *current_addr; |
| 215 | NonBlockingConnectHandler *callback; |
| 216 | void *opaque; |
| 217 | } ConnectState; |
| 218 | |
| 219 | static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, |
Paolo Bonzini | 11663b5 | 2012-10-02 09:19:01 +0200 | [diff] [blame] | 220 | ConnectState *connect_state, Error **errp); |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 221 | |
| 222 | static void wait_for_connect(void *opaque) |
| 223 | { |
| 224 | ConnectState *s = opaque; |
| 225 | int val = 0, rc = 0; |
| 226 | socklen_t valsize = sizeof(val); |
| 227 | bool in_progress; |
| 228 | |
| 229 | qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL); |
| 230 | |
| 231 | do { |
| 232 | rc = getsockopt(s->fd, SOL_SOCKET, SO_ERROR, (void *) &val, &valsize); |
| 233 | } while (rc == -1 && socket_error() == EINTR); |
| 234 | |
| 235 | /* update rc to contain error */ |
| 236 | if (!rc && val) { |
| 237 | rc = -1; |
| 238 | } |
| 239 | |
| 240 | /* connect error */ |
| 241 | if (rc < 0) { |
| 242 | closesocket(s->fd); |
| 243 | s->fd = rc; |
| 244 | } |
| 245 | |
| 246 | /* try to connect to the next address on the list */ |
Paolo Bonzini | 1fc05ad | 2012-10-03 13:37:46 +0200 | [diff] [blame] | 247 | if (s->current_addr) { |
| 248 | while (s->current_addr->ai_next != NULL && s->fd < 0) { |
| 249 | s->current_addr = s->current_addr->ai_next; |
Paolo Bonzini | 11663b5 | 2012-10-02 09:19:01 +0200 | [diff] [blame] | 250 | s->fd = inet_connect_addr(s->current_addr, &in_progress, s, NULL); |
Paolo Bonzini | 1fc05ad | 2012-10-03 13:37:46 +0200 | [diff] [blame] | 251 | /* connect in progress */ |
| 252 | if (in_progress) { |
| 253 | return; |
| 254 | } |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 255 | } |
Paolo Bonzini | 1fc05ad | 2012-10-03 13:37:46 +0200 | [diff] [blame] | 256 | |
| 257 | freeaddrinfo(s->addr_list); |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 258 | } |
| 259 | |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 260 | if (s->callback) { |
| 261 | s->callback(s->fd, s->opaque); |
| 262 | } |
| 263 | g_free(s); |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 264 | } |
| 265 | |
| 266 | static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, |
Paolo Bonzini | 11663b5 | 2012-10-02 09:19:01 +0200 | [diff] [blame] | 267 | ConnectState *connect_state, Error **errp) |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 268 | { |
| 269 | int sock, rc; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 270 | |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 271 | *in_progress = false; |
Luiz Capitulino | 02a08fe | 2012-08-01 13:42:47 -0300 | [diff] [blame] | 272 | |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 273 | sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); |
| 274 | if (sock < 0) { |
Paolo Bonzini | 11663b5 | 2012-10-02 09:19:01 +0200 | [diff] [blame] | 275 | error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 276 | return -1; |
| 277 | } |
Stefan Weil | 58455eb | 2012-09-28 19:07:39 +0200 | [diff] [blame] | 278 | qemu_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)); |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 279 | if (connect_state != NULL) { |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 280 | socket_set_nonblock(sock); |
| 281 | } |
| 282 | /* connect to peer */ |
| 283 | do { |
| 284 | rc = 0; |
| 285 | if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { |
| 286 | rc = -socket_error(); |
| 287 | } |
| 288 | } while (rc == -EINTR); |
| 289 | |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 290 | if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { |
| 291 | connect_state->fd = sock; |
| 292 | qemu_set_fd_handler2(sock, NULL, NULL, wait_for_connect, |
| 293 | connect_state); |
| 294 | *in_progress = true; |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 295 | } else if (rc < 0) { |
Paolo Bonzini | 11663b5 | 2012-10-02 09:19:01 +0200 | [diff] [blame] | 296 | error_set_errno(errp, errno, QERR_SOCKET_CONNECT_FAILED); |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 297 | closesocket(sock); |
| 298 | return -1; |
| 299 | } |
| 300 | return sock; |
| 301 | } |
| 302 | |
| 303 | static struct addrinfo *inet_parse_connect_opts(QemuOpts *opts, Error **errp) |
| 304 | { |
| 305 | struct addrinfo ai, *res; |
| 306 | int rc; |
| 307 | const char *addr; |
| 308 | const char *port; |
| 309 | |
| 310 | memset(&ai, 0, sizeof(ai)); |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 311 | |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 312 | ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; |
| 313 | ai.ai_family = PF_UNSPEC; |
| 314 | ai.ai_socktype = SOCK_STREAM; |
| 315 | |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 316 | addr = qemu_opt_get(opts, "host"); |
| 317 | port = qemu_opt_get(opts, "port"); |
| 318 | if (addr == NULL || port == NULL) { |
Paolo Bonzini | a12fb8a | 2012-10-02 09:18:02 +0200 | [diff] [blame] | 319 | error_setg(errp, "host and/or port not specified"); |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 320 | return NULL; |
| 321 | } |
| 322 | |
| 323 | if (qemu_opt_get_bool(opts, "ipv4", 0)) { |
| 324 | ai.ai_family = PF_INET; |
| 325 | } |
| 326 | if (qemu_opt_get_bool(opts, "ipv6", 0)) { |
| 327 | ai.ai_family = PF_INET6; |
| 328 | } |
| 329 | |
| 330 | /* lookup */ |
| 331 | rc = getaddrinfo(addr, port, &ai, &res); |
| 332 | if (rc != 0) { |
Paolo Bonzini | a12fb8a | 2012-10-02 09:18:02 +0200 | [diff] [blame] | 333 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
| 334 | gai_strerror(rc)); |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 335 | return NULL; |
| 336 | } |
| 337 | return res; |
| 338 | } |
| 339 | |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 340 | /** |
| 341 | * Create a socket and connect it to an address. |
| 342 | * |
| 343 | * @opts: QEMU options, recognized parameters strings "host" and "port", |
| 344 | * bools "ipv4" and "ipv6". |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 345 | * @errp: set on error |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 346 | * @callback: callback function for non-blocking connect |
| 347 | * @opaque: opaque for callback function |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 348 | * |
| 349 | * Returns: -1 on error, file descriptor on success. |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 350 | * |
| 351 | * If @callback is non-null, the connect is non-blocking. If this |
| 352 | * function succeeds, callback will be called when the connection |
| 353 | * completes, with the file descriptor on success, or -1 on error. |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 354 | */ |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 355 | int inet_connect_opts(QemuOpts *opts, Error **errp, |
| 356 | NonBlockingConnectHandler *callback, void *opaque) |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 357 | { |
| 358 | struct addrinfo *res, *e; |
| 359 | int sock = -1; |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 360 | bool in_progress; |
| 361 | ConnectState *connect_state = NULL; |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 362 | |
| 363 | res = inet_parse_connect_opts(opts, errp); |
| 364 | if (!res) { |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 365 | return -1; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 366 | } |
| 367 | |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 368 | if (callback != NULL) { |
| 369 | connect_state = g_malloc0(sizeof(*connect_state)); |
| 370 | connect_state->addr_list = res; |
| 371 | connect_state->callback = callback; |
| 372 | connect_state->opaque = opaque; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 373 | } |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 374 | |
| 375 | for (e = res; e != NULL; e = e->ai_next) { |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 376 | if (connect_state != NULL) { |
| 377 | connect_state->current_addr = e; |
| 378 | } |
Paolo Bonzini | 11663b5 | 2012-10-02 09:19:01 +0200 | [diff] [blame] | 379 | sock = inet_connect_addr(e, &in_progress, connect_state, errp); |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 380 | if (in_progress) { |
| 381 | return sock; |
| 382 | } else if (sock >= 0) { |
| 383 | /* non blocking socket immediate success, call callback */ |
| 384 | if (callback != NULL) { |
| 385 | callback(sock, opaque); |
| 386 | } |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 387 | break; |
vibi | 39b6efc | 2009-05-06 15:27:03 +0530 | [diff] [blame] | 388 | } |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 389 | } |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 390 | g_free(connect_state); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 391 | freeaddrinfo(res); |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 392 | return sock; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 393 | } |
| 394 | |
Paolo Bonzini | 7fc4e63 | 2012-10-02 09:35:32 +0200 | [diff] [blame] | 395 | int inet_dgram_opts(QemuOpts *opts, Error **errp) |
Gerd Hoffmann | 7e1b35b | 2009-09-10 10:58:51 +0200 | [diff] [blame] | 396 | { |
| 397 | struct addrinfo ai, *peer = NULL, *local = NULL; |
| 398 | const char *addr; |
| 399 | const char *port; |
Gerd Hoffmann | 7e1b35b | 2009-09-10 10:58:51 +0200 | [diff] [blame] | 400 | int sock = -1, rc; |
| 401 | |
| 402 | /* lookup peer addr */ |
| 403 | memset(&ai,0, sizeof(ai)); |
| 404 | ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; |
| 405 | ai.ai_family = PF_UNSPEC; |
| 406 | ai.ai_socktype = SOCK_DGRAM; |
| 407 | |
| 408 | addr = qemu_opt_get(opts, "host"); |
| 409 | port = qemu_opt_get(opts, "port"); |
| 410 | if (addr == NULL || strlen(addr) == 0) { |
| 411 | addr = "localhost"; |
| 412 | } |
| 413 | if (port == NULL || strlen(port) == 0) { |
Paolo Bonzini | 4f085c8 | 2012-10-02 09:25:14 +0200 | [diff] [blame] | 414 | error_setg(errp, "remote port not specified"); |
Gerd Hoffmann | 7e1b35b | 2009-09-10 10:58:51 +0200 | [diff] [blame] | 415 | return -1; |
| 416 | } |
| 417 | |
| 418 | if (qemu_opt_get_bool(opts, "ipv4", 0)) |
| 419 | ai.ai_family = PF_INET; |
| 420 | if (qemu_opt_get_bool(opts, "ipv6", 0)) |
| 421 | ai.ai_family = PF_INET6; |
| 422 | |
| 423 | if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) { |
Paolo Bonzini | 4f085c8 | 2012-10-02 09:25:14 +0200 | [diff] [blame] | 424 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
| 425 | gai_strerror(rc)); |
Gerd Hoffmann | 7e1b35b | 2009-09-10 10:58:51 +0200 | [diff] [blame] | 426 | return -1; |
| 427 | } |
Gerd Hoffmann | 7e1b35b | 2009-09-10 10:58:51 +0200 | [diff] [blame] | 428 | |
| 429 | /* lookup local addr */ |
| 430 | memset(&ai,0, sizeof(ai)); |
| 431 | ai.ai_flags = AI_PASSIVE; |
| 432 | ai.ai_family = peer->ai_family; |
| 433 | ai.ai_socktype = SOCK_DGRAM; |
| 434 | |
| 435 | addr = qemu_opt_get(opts, "localaddr"); |
| 436 | port = qemu_opt_get(opts, "localport"); |
| 437 | if (addr == NULL || strlen(addr) == 0) { |
| 438 | addr = NULL; |
| 439 | } |
| 440 | if (!port || strlen(port) == 0) |
| 441 | port = "0"; |
| 442 | |
| 443 | if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) { |
Paolo Bonzini | 4f085c8 | 2012-10-02 09:25:14 +0200 | [diff] [blame] | 444 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
| 445 | gai_strerror(rc)); |
Stefan Weil | 39b3845 | 2012-09-01 09:40:26 +0200 | [diff] [blame] | 446 | goto err; |
Gerd Hoffmann | 7e1b35b | 2009-09-10 10:58:51 +0200 | [diff] [blame] | 447 | } |
Gerd Hoffmann | 7e1b35b | 2009-09-10 10:58:51 +0200 | [diff] [blame] | 448 | |
| 449 | /* create socket */ |
Kevin Wolf | 40ff6d7 | 2009-12-02 12:24:42 +0100 | [diff] [blame] | 450 | sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); |
Gerd Hoffmann | 7e1b35b | 2009-09-10 10:58:51 +0200 | [diff] [blame] | 451 | if (sock < 0) { |
Paolo Bonzini | 4f085c8 | 2012-10-02 09:25:14 +0200 | [diff] [blame] | 452 | error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); |
Gerd Hoffmann | 7e1b35b | 2009-09-10 10:58:51 +0200 | [diff] [blame] | 453 | goto err; |
| 454 | } |
| 455 | setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on)); |
| 456 | |
| 457 | /* bind socket */ |
Gerd Hoffmann | 7e1b35b | 2009-09-10 10:58:51 +0200 | [diff] [blame] | 458 | if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { |
Paolo Bonzini | 4f085c8 | 2012-10-02 09:25:14 +0200 | [diff] [blame] | 459 | error_set_errno(errp, errno, QERR_SOCKET_BIND_FAILED); |
Gerd Hoffmann | 7e1b35b | 2009-09-10 10:58:51 +0200 | [diff] [blame] | 460 | goto err; |
| 461 | } |
| 462 | |
| 463 | /* connect to peer */ |
Gerd Hoffmann | 7e1b35b | 2009-09-10 10:58:51 +0200 | [diff] [blame] | 464 | if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { |
Paolo Bonzini | 4f085c8 | 2012-10-02 09:25:14 +0200 | [diff] [blame] | 465 | error_set_errno(errp, errno, QERR_SOCKET_CONNECT_FAILED); |
Gerd Hoffmann | 7e1b35b | 2009-09-10 10:58:51 +0200 | [diff] [blame] | 466 | goto err; |
| 467 | } |
| 468 | |
| 469 | freeaddrinfo(local); |
| 470 | freeaddrinfo(peer); |
| 471 | return sock; |
| 472 | |
| 473 | err: |
| 474 | if (-1 != sock) |
| 475 | closesocket(sock); |
| 476 | if (local) |
| 477 | freeaddrinfo(local); |
| 478 | if (peer) |
| 479 | freeaddrinfo(peer); |
| 480 | return -1; |
| 481 | } |
| 482 | |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 483 | /* compatibility wrapper */ |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 484 | static InetSocketAddress *inet_parse(const char *str, Error **errp) |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 485 | { |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 486 | InetSocketAddress *addr; |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 487 | const char *optstr, *h; |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 488 | char host[64]; |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 489 | char port[33]; |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 490 | int to; |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 491 | int pos; |
| 492 | |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 493 | addr = g_new0(InetSocketAddress, 1); |
| 494 | |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 495 | /* parse address */ |
| 496 | if (str[0] == ':') { |
| 497 | /* no host given */ |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 498 | host[0] = '\0'; |
| 499 | if (1 != sscanf(str, ":%32[^,]%n", port, &pos)) { |
Paolo Bonzini | 2f002c4 | 2012-09-19 13:22:21 +0200 | [diff] [blame] | 500 | error_setg(errp, "error parsing port in address '%s'", str); |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 501 | goto fail; |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 502 | } |
| 503 | } else if (str[0] == '[') { |
| 504 | /* IPv6 addr */ |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 505 | if (2 != sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos)) { |
Paolo Bonzini | 2f002c4 | 2012-09-19 13:22:21 +0200 | [diff] [blame] | 506 | error_setg(errp, "error parsing IPv6 address '%s'", str); |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 507 | goto fail; |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 508 | } |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 509 | addr->ipv6 = addr->has_ipv6 = true; |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 510 | } else if (qemu_isdigit(str[0])) { |
| 511 | /* IPv4 addr */ |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 512 | if (2 != sscanf(str, "%64[0-9.]:%32[^,]%n", host, port, &pos)) { |
Paolo Bonzini | 2f002c4 | 2012-09-19 13:22:21 +0200 | [diff] [blame] | 513 | error_setg(errp, "error parsing IPv4 address '%s'", str); |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 514 | goto fail; |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 515 | } |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 516 | addr->ipv4 = addr->has_ipv4 = true; |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 517 | } else { |
| 518 | /* hostname */ |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 519 | if (2 != sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos)) { |
Paolo Bonzini | 2f002c4 | 2012-09-19 13:22:21 +0200 | [diff] [blame] | 520 | error_setg(errp, "error parsing address '%s'", str); |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 521 | goto fail; |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 522 | } |
| 523 | } |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 524 | |
| 525 | addr->host = g_strdup(host); |
| 526 | addr->port = g_strdup(port); |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 527 | |
| 528 | /* parse options */ |
| 529 | optstr = str + pos; |
| 530 | h = strstr(optstr, ",to="); |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 531 | if (h) { |
Anthony PERARD | 1ccbc28 | 2012-11-16 04:08:14 +0000 | [diff] [blame] | 532 | h += 4; |
| 533 | if (sscanf(h, "%d%n", &to, &pos) != 1 || |
| 534 | (h[pos] != '\0' && h[pos] != ',')) { |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 535 | error_setg(errp, "error parsing to= argument"); |
| 536 | goto fail; |
| 537 | } |
| 538 | addr->has_to = true; |
| 539 | addr->to = to; |
| 540 | } |
| 541 | if (strstr(optstr, ",ipv4")) { |
| 542 | addr->ipv4 = addr->has_ipv4 = true; |
| 543 | } |
| 544 | if (strstr(optstr, ",ipv6")) { |
| 545 | addr->ipv6 = addr->has_ipv6 = true; |
| 546 | } |
| 547 | return addr; |
| 548 | |
| 549 | fail: |
| 550 | qapi_free_InetSocketAddress(addr); |
| 551 | return NULL; |
| 552 | } |
| 553 | |
| 554 | static void inet_addr_to_opts(QemuOpts *opts, InetSocketAddress *addr) |
| 555 | { |
| 556 | bool ipv4 = addr->ipv4 || !addr->has_ipv4; |
| 557 | bool ipv6 = addr->ipv6 || !addr->has_ipv6; |
| 558 | |
| 559 | if (!ipv4 || !ipv6) { |
| 560 | qemu_opt_set_bool(opts, "ipv4", ipv4); |
| 561 | qemu_opt_set_bool(opts, "ipv6", ipv6); |
| 562 | } |
| 563 | if (addr->has_to) { |
| 564 | char to[20]; |
| 565 | snprintf(to, sizeof(to), "%d", addr->to); |
| 566 | qemu_opt_set(opts, "to", to); |
| 567 | } |
| 568 | qemu_opt_set(opts, "host", addr->host); |
| 569 | qemu_opt_set(opts, "port", addr->port); |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 570 | } |
| 571 | |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 572 | int inet_listen(const char *str, char *ostr, int olen, |
Amos Kong | 029409e | 2012-05-11 00:28:26 +0800 | [diff] [blame] | 573 | int socktype, int port_offset, Error **errp) |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 574 | { |
| 575 | QemuOpts *opts; |
| 576 | char *optstr; |
| 577 | int sock = -1; |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 578 | InetSocketAddress *addr; |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 579 | |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 580 | addr = inet_parse(str, errp); |
| 581 | if (addr != NULL) { |
Dong Xu Wang | e478b44 | 2012-12-06 14:47:22 +0800 | [diff] [blame] | 582 | opts = qemu_opts_create_nofail(&dummy_opts); |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 583 | inet_addr_to_opts(opts, addr); |
| 584 | qapi_free_InetSocketAddress(addr); |
Amos Kong | 029409e | 2012-05-11 00:28:26 +0800 | [diff] [blame] | 585 | sock = inet_listen_opts(opts, port_offset, errp); |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 586 | if (sock != -1 && ostr) { |
| 587 | optstr = strchr(str, ','); |
| 588 | if (qemu_opt_get_bool(opts, "ipv6", 0)) { |
| 589 | snprintf(ostr, olen, "[%s]:%s%s", |
| 590 | qemu_opt_get(opts, "host"), |
| 591 | qemu_opt_get(opts, "port"), |
| 592 | optstr ? optstr : ""); |
| 593 | } else { |
| 594 | snprintf(ostr, olen, "%s:%s%s", |
| 595 | qemu_opt_get(opts, "host"), |
| 596 | qemu_opt_get(opts, "port"), |
| 597 | optstr ? optstr : ""); |
| 598 | } |
| 599 | } |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 600 | qemu_opts_del(opts); |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 601 | } |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 602 | return sock; |
| 603 | } |
| 604 | |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 605 | /** |
| 606 | * Create a blocking socket and connect it to an address. |
| 607 | * |
| 608 | * @str: address string |
| 609 | * @errp: set in case of an error |
| 610 | * |
| 611 | * Returns -1 in case of error, file descriptor on success |
| 612 | **/ |
| 613 | int inet_connect(const char *str, Error **errp) |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 614 | { |
| 615 | QemuOpts *opts; |
| 616 | int sock = -1; |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 617 | InetSocketAddress *addr; |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 618 | |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 619 | addr = inet_parse(str, errp); |
| 620 | if (addr != NULL) { |
Dong Xu Wang | e478b44 | 2012-12-06 14:47:22 +0800 | [diff] [blame] | 621 | opts = qemu_opts_create_nofail(&dummy_opts); |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 622 | inet_addr_to_opts(opts, addr); |
| 623 | qapi_free_InetSocketAddress(addr); |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 624 | sock = inet_connect_opts(opts, errp, NULL, NULL); |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 625 | qemu_opts_del(opts); |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 626 | } |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 627 | return sock; |
| 628 | } |
| 629 | |
| 630 | /** |
| 631 | * Create a non-blocking socket and connect it to an address. |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 632 | * Calls the callback function with fd in case of success or -1 in case of |
| 633 | * error. |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 634 | * |
| 635 | * @str: address string |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 636 | * @callback: callback function that is called when connect completes, |
| 637 | * cannot be NULL. |
| 638 | * @opaque: opaque for callback function |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 639 | * @errp: set in case of an error |
| 640 | * |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 641 | * Returns: -1 on immediate error, file descriptor on success. |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 642 | **/ |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 643 | int inet_nonblocking_connect(const char *str, |
| 644 | NonBlockingConnectHandler *callback, |
| 645 | void *opaque, Error **errp) |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 646 | { |
| 647 | QemuOpts *opts; |
| 648 | int sock = -1; |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 649 | InetSocketAddress *addr; |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 650 | |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 651 | g_assert(callback != NULL); |
| 652 | |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 653 | addr = inet_parse(str, errp); |
| 654 | if (addr != NULL) { |
Dong Xu Wang | e478b44 | 2012-12-06 14:47:22 +0800 | [diff] [blame] | 655 | opts = qemu_opts_create_nofail(&dummy_opts); |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 656 | inet_addr_to_opts(opts, addr); |
| 657 | qapi_free_InetSocketAddress(addr); |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 658 | sock = inet_connect_opts(opts, errp, callback, opaque); |
Paolo Bonzini | 879e45c | 2012-09-19 13:51:46 +0200 | [diff] [blame] | 659 | qemu_opts_del(opts); |
Amos Kong | a6ba35b | 2012-05-11 00:28:16 +0800 | [diff] [blame] | 660 | } |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 661 | return sock; |
| 662 | } |
| 663 | |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 664 | #ifndef _WIN32 |
| 665 | |
Paolo Bonzini | 7fc4e63 | 2012-10-02 09:35:32 +0200 | [diff] [blame] | 666 | int unix_listen_opts(QemuOpts *opts, Error **errp) |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 667 | { |
| 668 | struct sockaddr_un un; |
Gerd Hoffmann | 62b6adf | 2009-09-10 10:58:38 +0200 | [diff] [blame] | 669 | const char *path = qemu_opt_get(opts, "path"); |
| 670 | int sock, fd; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 671 | |
Kevin Wolf | 40ff6d7 | 2009-12-02 12:24:42 +0100 | [diff] [blame] | 672 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 673 | if (sock < 0) { |
Paolo Bonzini | 5889966 | 2012-09-19 13:54:39 +0200 | [diff] [blame] | 674 | error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); |
vibi | 39b6efc | 2009-05-06 15:27:03 +0530 | [diff] [blame] | 675 | return -1; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 676 | } |
| 677 | |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 678 | memset(&un, 0, sizeof(un)); |
| 679 | un.sun_family = AF_UNIX; |
| 680 | if (path && strlen(path)) { |
| 681 | snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); |
| 682 | } else { |
| 683 | char *tmpdir = getenv("TMPDIR"); |
| 684 | snprintf(un.sun_path, sizeof(un.sun_path), "%s/qemu-socket-XXXXXX", |
| 685 | tmpdir ? tmpdir : "/tmp"); |
| 686 | /* |
| 687 | * This dummy fd usage silences the mktemp() unsecure warning. |
| 688 | * Using mkstemp() doesn't make things more secure here |
| 689 | * though. bind() complains about existing files, so we have |
| 690 | * to unlink first and thus re-open the race window. The |
| 691 | * worst case possible is bind() failing, i.e. a DoS attack. |
| 692 | */ |
| 693 | fd = mkstemp(un.sun_path); close(fd); |
Gerd Hoffmann | 62b6adf | 2009-09-10 10:58:38 +0200 | [diff] [blame] | 694 | qemu_opt_set(opts, "path", un.sun_path); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 695 | } |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 696 | |
| 697 | unlink(un.sun_path); |
| 698 | if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { |
Paolo Bonzini | 5889966 | 2012-09-19 13:54:39 +0200 | [diff] [blame] | 699 | error_set_errno(errp, errno, QERR_SOCKET_BIND_FAILED); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 700 | goto err; |
| 701 | } |
| 702 | if (listen(sock, 1) < 0) { |
Paolo Bonzini | 5889966 | 2012-09-19 13:54:39 +0200 | [diff] [blame] | 703 | error_set_errno(errp, errno, QERR_SOCKET_LISTEN_FAILED); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 704 | goto err; |
| 705 | } |
| 706 | |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 707 | return sock; |
| 708 | |
| 709 | err: |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 710 | closesocket(sock); |
| 711 | return -1; |
| 712 | } |
| 713 | |
Paolo Bonzini | 1fc05ad | 2012-10-03 13:37:46 +0200 | [diff] [blame] | 714 | int unix_connect_opts(QemuOpts *opts, Error **errp, |
| 715 | NonBlockingConnectHandler *callback, void *opaque) |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 716 | { |
| 717 | struct sockaddr_un un; |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 718 | const char *path = qemu_opt_get(opts, "path"); |
Paolo Bonzini | 1fc05ad | 2012-10-03 13:37:46 +0200 | [diff] [blame] | 719 | ConnectState *connect_state = NULL; |
| 720 | int sock, rc; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 721 | |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 722 | if (NULL == path) { |
Paolo Bonzini | 5889966 | 2012-09-19 13:54:39 +0200 | [diff] [blame] | 723 | error_setg(errp, "unix connect: no path specified\n"); |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 724 | return -1; |
| 725 | } |
| 726 | |
Kevin Wolf | 40ff6d7 | 2009-12-02 12:24:42 +0100 | [diff] [blame] | 727 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 728 | if (sock < 0) { |
Paolo Bonzini | 5889966 | 2012-09-19 13:54:39 +0200 | [diff] [blame] | 729 | error_set_errno(errp, errno, QERR_SOCKET_CREATE_FAILED); |
vibi | 39b6efc | 2009-05-06 15:27:03 +0530 | [diff] [blame] | 730 | return -1; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 731 | } |
Paolo Bonzini | 1fc05ad | 2012-10-03 13:37:46 +0200 | [diff] [blame] | 732 | if (callback != NULL) { |
| 733 | connect_state = g_malloc0(sizeof(*connect_state)); |
| 734 | connect_state->callback = callback; |
| 735 | connect_state->opaque = opaque; |
| 736 | socket_set_nonblock(sock); |
| 737 | } |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 738 | |
| 739 | memset(&un, 0, sizeof(un)); |
| 740 | un.sun_family = AF_UNIX; |
| 741 | snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); |
Paolo Bonzini | 1fc05ad | 2012-10-03 13:37:46 +0200 | [diff] [blame] | 742 | |
| 743 | /* connect to peer */ |
| 744 | do { |
| 745 | rc = 0; |
| 746 | if (connect(sock, (struct sockaddr *) &un, sizeof(un)) < 0) { |
| 747 | rc = -socket_error(); |
| 748 | } |
| 749 | } while (rc == -EINTR); |
| 750 | |
| 751 | if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { |
| 752 | connect_state->fd = sock; |
| 753 | qemu_set_fd_handler2(sock, NULL, NULL, wait_for_connect, |
| 754 | connect_state); |
| 755 | return sock; |
| 756 | } else if (rc >= 0) { |
| 757 | /* non blocking socket immediate success, call callback */ |
| 758 | if (callback != NULL) { |
| 759 | callback(sock, opaque); |
| 760 | } |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 761 | } |
| 762 | |
Paolo Bonzini | 1fc05ad | 2012-10-03 13:37:46 +0200 | [diff] [blame] | 763 | if (rc < 0) { |
Paolo Bonzini | 5889966 | 2012-09-19 13:54:39 +0200 | [diff] [blame] | 764 | error_set_errno(errp, -rc, QERR_SOCKET_CONNECT_FAILED); |
Paolo Bonzini | 1fc05ad | 2012-10-03 13:37:46 +0200 | [diff] [blame] | 765 | close(sock); |
| 766 | sock = -1; |
| 767 | } |
| 768 | |
| 769 | g_free(connect_state); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 770 | return sock; |
| 771 | } |
| 772 | |
Paolo Bonzini | 0c81470 | 2012-10-18 08:44:00 +0200 | [diff] [blame] | 773 | #else |
| 774 | |
| 775 | int unix_listen_opts(QemuOpts *opts, Error **errp) |
| 776 | { |
Paolo Bonzini | 5889966 | 2012-09-19 13:54:39 +0200 | [diff] [blame] | 777 | error_setg(errp, "unix sockets are not available on windows"); |
Paolo Bonzini | 0c81470 | 2012-10-18 08:44:00 +0200 | [diff] [blame] | 778 | errno = ENOTSUP; |
| 779 | return -1; |
| 780 | } |
| 781 | |
Paolo Bonzini | 1fc05ad | 2012-10-03 13:37:46 +0200 | [diff] [blame] | 782 | int unix_connect_opts(QemuOpts *opts, Error **errp, |
| 783 | NonBlockingConnectHandler *callback, void *opaque) |
Paolo Bonzini | 0c81470 | 2012-10-18 08:44:00 +0200 | [diff] [blame] | 784 | { |
Paolo Bonzini | 5889966 | 2012-09-19 13:54:39 +0200 | [diff] [blame] | 785 | error_setg(errp, "unix sockets are not available on windows"); |
Paolo Bonzini | 0c81470 | 2012-10-18 08:44:00 +0200 | [diff] [blame] | 786 | errno = ENOTSUP; |
| 787 | return -1; |
| 788 | } |
| 789 | #endif |
| 790 | |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 791 | /* compatibility wrapper */ |
Paolo Bonzini | 7fc4e63 | 2012-10-02 09:35:32 +0200 | [diff] [blame] | 792 | int unix_listen(const char *str, char *ostr, int olen, Error **errp) |
Gerd Hoffmann | 62b6adf | 2009-09-10 10:58:38 +0200 | [diff] [blame] | 793 | { |
| 794 | QemuOpts *opts; |
| 795 | char *path, *optstr; |
| 796 | int sock, len; |
| 797 | |
Dong Xu Wang | e478b44 | 2012-12-06 14:47:22 +0800 | [diff] [blame] | 798 | opts = qemu_opts_create_nofail(&dummy_opts); |
Gerd Hoffmann | 62b6adf | 2009-09-10 10:58:38 +0200 | [diff] [blame] | 799 | |
| 800 | optstr = strchr(str, ','); |
| 801 | if (optstr) { |
| 802 | len = optstr - str; |
| 803 | if (len) { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 804 | path = g_malloc(len+1); |
Gerd Hoffmann | 62b6adf | 2009-09-10 10:58:38 +0200 | [diff] [blame] | 805 | snprintf(path, len+1, "%.*s", len, str); |
| 806 | qemu_opt_set(opts, "path", path); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 807 | g_free(path); |
Gerd Hoffmann | 62b6adf | 2009-09-10 10:58:38 +0200 | [diff] [blame] | 808 | } |
| 809 | } else { |
| 810 | qemu_opt_set(opts, "path", str); |
| 811 | } |
| 812 | |
Paolo Bonzini | 7fc4e63 | 2012-10-02 09:35:32 +0200 | [diff] [blame] | 813 | sock = unix_listen_opts(opts, errp); |
Gerd Hoffmann | 62b6adf | 2009-09-10 10:58:38 +0200 | [diff] [blame] | 814 | |
| 815 | if (sock != -1 && ostr) |
| 816 | snprintf(ostr, olen, "%s%s", qemu_opt_get(opts, "path"), optstr ? optstr : ""); |
| 817 | qemu_opts_del(opts); |
| 818 | return sock; |
| 819 | } |
| 820 | |
Paolo Bonzini | 7fc4e63 | 2012-10-02 09:35:32 +0200 | [diff] [blame] | 821 | int unix_connect(const char *path, Error **errp) |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 822 | { |
| 823 | QemuOpts *opts; |
| 824 | int sock; |
| 825 | |
Dong Xu Wang | e478b44 | 2012-12-06 14:47:22 +0800 | [diff] [blame] | 826 | opts = qemu_opts_create_nofail(&dummy_opts); |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 827 | qemu_opt_set(opts, "path", path); |
Paolo Bonzini | 1fc05ad | 2012-10-03 13:37:46 +0200 | [diff] [blame] | 828 | sock = unix_connect_opts(opts, errp, NULL, NULL); |
| 829 | qemu_opts_del(opts); |
| 830 | return sock; |
| 831 | } |
| 832 | |
| 833 | |
| 834 | int unix_nonblocking_connect(const char *path, |
| 835 | NonBlockingConnectHandler *callback, |
| 836 | void *opaque, Error **errp) |
| 837 | { |
| 838 | QemuOpts *opts; |
| 839 | int sock = -1; |
| 840 | |
| 841 | g_assert(callback != NULL); |
| 842 | |
Dong Xu Wang | e478b44 | 2012-12-06 14:47:22 +0800 | [diff] [blame] | 843 | opts = qemu_opts_create_nofail(&dummy_opts); |
Paolo Bonzini | 1fc05ad | 2012-10-03 13:37:46 +0200 | [diff] [blame] | 844 | qemu_opt_set(opts, "path", path); |
| 845 | sock = unix_connect_opts(opts, errp, callback, opaque); |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 846 | qemu_opts_del(opts); |
| 847 | return sock; |
| 848 | } |
| 849 | |
Paolo Bonzini | 101f9cb | 2012-10-23 21:31:53 +0200 | [diff] [blame] | 850 | SocketAddress *socket_parse(const char *str, Error **errp) |
| 851 | { |
| 852 | SocketAddress *addr = NULL; |
| 853 | |
| 854 | addr = g_new(SocketAddress, 1); |
| 855 | if (strstart(str, "unix:", NULL)) { |
| 856 | if (str[5] == '\0') { |
| 857 | error_setg(errp, "invalid Unix socket address\n"); |
| 858 | goto fail; |
| 859 | } else { |
| 860 | addr->kind = SOCKET_ADDRESS_KIND_UNIX; |
| 861 | addr->q_unix = g_new(UnixSocketAddress, 1); |
| 862 | addr->q_unix->path = g_strdup(str + 5); |
| 863 | } |
| 864 | } else if (strstart(str, "fd:", NULL)) { |
| 865 | if (str[3] == '\0') { |
| 866 | error_setg(errp, "invalid file descriptor address\n"); |
| 867 | goto fail; |
| 868 | } else { |
| 869 | addr->kind = SOCKET_ADDRESS_KIND_FD; |
| 870 | addr->fd = g_new(String, 1); |
| 871 | addr->fd->str = g_strdup(str + 3); |
| 872 | } |
| 873 | } else { |
| 874 | addr->kind = SOCKET_ADDRESS_KIND_INET; |
| 875 | addr->inet = g_new(InetSocketAddress, 1); |
| 876 | addr->inet = inet_parse(str, errp); |
| 877 | if (addr->inet == NULL) { |
| 878 | goto fail; |
| 879 | } |
| 880 | } |
| 881 | return addr; |
| 882 | |
| 883 | fail: |
| 884 | qapi_free_SocketAddress(addr); |
| 885 | return NULL; |
| 886 | } |
| 887 | |
| 888 | int socket_connect(SocketAddress *addr, Error **errp, |
| 889 | NonBlockingConnectHandler *callback, void *opaque) |
| 890 | { |
| 891 | QemuOpts *opts; |
| 892 | int fd; |
| 893 | |
Dong Xu Wang | e478b44 | 2012-12-06 14:47:22 +0800 | [diff] [blame] | 894 | opts = qemu_opts_create_nofail(&dummy_opts); |
Paolo Bonzini | 101f9cb | 2012-10-23 21:31:53 +0200 | [diff] [blame] | 895 | switch (addr->kind) { |
| 896 | case SOCKET_ADDRESS_KIND_INET: |
| 897 | inet_addr_to_opts(opts, addr->inet); |
| 898 | fd = inet_connect_opts(opts, errp, callback, opaque); |
| 899 | break; |
| 900 | |
| 901 | case SOCKET_ADDRESS_KIND_UNIX: |
| 902 | qemu_opt_set(opts, "path", addr->q_unix->path); |
| 903 | fd = unix_connect_opts(opts, errp, callback, opaque); |
| 904 | break; |
| 905 | |
| 906 | case SOCKET_ADDRESS_KIND_FD: |
| 907 | fd = monitor_get_fd(cur_mon, addr->fd->str, errp); |
| 908 | if (callback) { |
| 909 | callback(fd, opaque); |
| 910 | } |
| 911 | break; |
| 912 | |
| 913 | default: |
| 914 | abort(); |
| 915 | } |
| 916 | qemu_opts_del(opts); |
| 917 | return fd; |
| 918 | } |
| 919 | |
| 920 | int socket_listen(SocketAddress *addr, Error **errp) |
| 921 | { |
| 922 | QemuOpts *opts; |
| 923 | int fd; |
| 924 | |
Dong Xu Wang | e478b44 | 2012-12-06 14:47:22 +0800 | [diff] [blame] | 925 | opts = qemu_opts_create_nofail(&dummy_opts); |
Paolo Bonzini | 101f9cb | 2012-10-23 21:31:53 +0200 | [diff] [blame] | 926 | switch (addr->kind) { |
| 927 | case SOCKET_ADDRESS_KIND_INET: |
| 928 | inet_addr_to_opts(opts, addr->inet); |
| 929 | fd = inet_listen_opts(opts, 0, errp); |
| 930 | break; |
| 931 | |
| 932 | case SOCKET_ADDRESS_KIND_UNIX: |
| 933 | qemu_opt_set(opts, "path", addr->q_unix->path); |
| 934 | fd = unix_listen_opts(opts, errp); |
| 935 | break; |
| 936 | |
| 937 | case SOCKET_ADDRESS_KIND_FD: |
| 938 | fd = monitor_get_fd(cur_mon, addr->fd->str, errp); |
| 939 | break; |
| 940 | |
| 941 | default: |
| 942 | abort(); |
| 943 | } |
| 944 | qemu_opts_del(opts); |
| 945 | return fd; |
| 946 | } |
| 947 | |
Paolo Bonzini | 0706a4d | 2010-04-01 19:57:08 +0200 | [diff] [blame] | 948 | #ifdef _WIN32 |
| 949 | static void socket_cleanup(void) |
| 950 | { |
| 951 | WSACleanup(); |
| 952 | } |
| 953 | #endif |
| 954 | |
| 955 | int socket_init(void) |
| 956 | { |
| 957 | #ifdef _WIN32 |
| 958 | WSADATA Data; |
| 959 | int ret, err; |
| 960 | |
| 961 | ret = WSAStartup(MAKEWORD(2,2), &Data); |
| 962 | if (ret != 0) { |
| 963 | err = WSAGetLastError(); |
| 964 | fprintf(stderr, "WSAStartup: %d\n", err); |
| 965 | return -1; |
| 966 | } |
| 967 | atexit(socket_cleanup); |
| 968 | #endif |
| 969 | return 0; |
| 970 | } |