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 | |
| 25 | #include "qemu_socket.h" |
blueswir1 | 47398b9 | 2008-11-22 20:04:24 +0000 | [diff] [blame] | 26 | #include "qemu-common.h" /* for qemu_isdigit */ |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 27 | #include "main-loop.h" |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 28 | |
| 29 | #ifndef AI_ADDRCONFIG |
| 30 | # define AI_ADDRCONFIG 0 |
| 31 | #endif |
| 32 | |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 33 | static const int on=1, off=0; |
| 34 | |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 35 | /* used temporarely until all users are converted to QemuOpts */ |
Blue Swirl | c139090 | 2009-09-12 09:58:51 +0000 | [diff] [blame] | 36 | static QemuOptsList dummy_opts = { |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 37 | .name = "dummy", |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 38 | .head = QTAILQ_HEAD_INITIALIZER(dummy_opts.head), |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 39 | .desc = { |
| 40 | { |
| 41 | .name = "path", |
| 42 | .type = QEMU_OPT_STRING, |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 43 | },{ |
| 44 | .name = "host", |
| 45 | .type = QEMU_OPT_STRING, |
| 46 | },{ |
| 47 | .name = "port", |
| 48 | .type = QEMU_OPT_STRING, |
| 49 | },{ |
| 50 | .name = "to", |
| 51 | .type = QEMU_OPT_NUMBER, |
| 52 | },{ |
| 53 | .name = "ipv4", |
| 54 | .type = QEMU_OPT_BOOL, |
| 55 | },{ |
| 56 | .name = "ipv6", |
| 57 | .type = QEMU_OPT_BOOL, |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 58 | }, |
| 59 | { /* end if list */ } |
| 60 | }, |
| 61 | }; |
| 62 | |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 63 | static int inet_getport(struct addrinfo *e) |
| 64 | { |
| 65 | struct sockaddr_in *i4; |
| 66 | struct sockaddr_in6 *i6; |
| 67 | |
| 68 | switch (e->ai_family) { |
| 69 | case PF_INET6: |
| 70 | i6 = (void*)e->ai_addr; |
| 71 | return ntohs(i6->sin6_port); |
| 72 | case PF_INET: |
| 73 | i4 = (void*)e->ai_addr; |
| 74 | return ntohs(i4->sin_port); |
| 75 | default: |
| 76 | return 0; |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | static void inet_setport(struct addrinfo *e, int port) |
| 81 | { |
| 82 | struct sockaddr_in *i4; |
| 83 | struct sockaddr_in6 *i6; |
| 84 | |
| 85 | switch (e->ai_family) { |
| 86 | case PF_INET6: |
| 87 | i6 = (void*)e->ai_addr; |
| 88 | i6->sin6_port = htons(port); |
| 89 | break; |
| 90 | case PF_INET: |
| 91 | i4 = (void*)e->ai_addr; |
| 92 | i4->sin_port = htons(port); |
| 93 | break; |
| 94 | } |
| 95 | } |
| 96 | |
Luiz Capitulino | c9c4b34 | 2010-01-20 11:42:38 -0200 | [diff] [blame] | 97 | const char *inet_strfamily(int family) |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 98 | { |
| 99 | switch (family) { |
| 100 | case PF_INET6: return "ipv6"; |
| 101 | case PF_INET: return "ipv4"; |
| 102 | case PF_UNIX: return "unix"; |
| 103 | } |
Luiz Capitulino | c445321 | 2010-01-20 11:42:39 -0200 | [diff] [blame] | 104 | return "unknown"; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 105 | } |
| 106 | |
Amos Kong | 029409e | 2012-05-11 00:28:26 +0800 | [diff] [blame] | 107 | int inet_listen_opts(QemuOpts *opts, int port_offset, Error **errp) |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 108 | { |
| 109 | struct addrinfo ai,*res,*e; |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 110 | const char *addr; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 111 | char port[33]; |
| 112 | char uaddr[INET6_ADDRSTRLEN+1]; |
| 113 | char uport[33]; |
Markus Armbruster | 877691f | 2012-02-07 15:09:15 +0100 | [diff] [blame] | 114 | int slisten, rc, to, port_min, port_max, p; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 115 | |
| 116 | memset(&ai,0, sizeof(ai)); |
| 117 | ai.ai_flags = AI_PASSIVE | AI_ADDRCONFIG; |
| 118 | ai.ai_family = PF_UNSPEC; |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 119 | ai.ai_socktype = SOCK_STREAM; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 120 | |
Jens Osterkamp | e23a22e | 2010-04-12 10:51:01 +0200 | [diff] [blame] | 121 | if ((qemu_opt_get(opts, "host") == NULL) || |
| 122 | (qemu_opt_get(opts, "port") == NULL)) { |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 123 | fprintf(stderr, "%s: host and/or port not specified\n", __FUNCTION__); |
Amos Kong | 029409e | 2012-05-11 00:28:26 +0800 | [diff] [blame] | 124 | error_set(errp, QERR_SOCKET_CREATE_FAILED); |
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) { |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 141 | fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port, |
| 142 | gai_strerror(rc)); |
Amos Kong | 029409e | 2012-05-11 00:28:26 +0800 | [diff] [blame] | 143 | error_set(errp, QERR_SOCKET_CREATE_FAILED); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 144 | return -1; |
| 145 | } |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 146 | |
| 147 | /* create socket + bind */ |
| 148 | for (e = res; e != NULL; e = e->ai_next) { |
vibi | 39b6efc | 2009-05-06 15:27:03 +0530 | [diff] [blame] | 149 | getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, |
| 150 | uaddr,INET6_ADDRSTRLEN,uport,32, |
| 151 | NI_NUMERICHOST | NI_NUMERICSERV); |
Kevin Wolf | 40ff6d7 | 2009-12-02 12:24:42 +0100 | [diff] [blame] | 152 | slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); |
vibi | 39b6efc | 2009-05-06 15:27:03 +0530 | [diff] [blame] | 153 | if (slisten < 0) { |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 154 | fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__, |
| 155 | inet_strfamily(e->ai_family), strerror(errno)); |
Amos Kong | 029409e | 2012-05-11 00:28:26 +0800 | [diff] [blame] | 156 | if (!e->ai_next) { |
| 157 | error_set(errp, QERR_SOCKET_CREATE_FAILED); |
| 158 | } |
vibi | 39b6efc | 2009-05-06 15:27:03 +0530 | [diff] [blame] | 159 | continue; |
| 160 | } |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 161 | |
| 162 | setsockopt(slisten,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on)); |
| 163 | #ifdef IPV6_V6ONLY |
| 164 | if (e->ai_family == PF_INET6) { |
| 165 | /* listen on both ipv4 and ipv6 */ |
vibi | 39b6efc | 2009-05-06 15:27:03 +0530 | [diff] [blame] | 166 | setsockopt(slisten,IPPROTO_IPV6,IPV6_V6ONLY,(void*)&off, |
| 167 | sizeof(off)); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 168 | } |
| 169 | #endif |
| 170 | |
Markus Armbruster | 877691f | 2012-02-07 15:09:15 +0100 | [diff] [blame] | 171 | port_min = inet_getport(e); |
| 172 | port_max = to ? to + port_offset : port_min; |
| 173 | for (p = port_min; p <= port_max; p++) { |
| 174 | inet_setport(e, p); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 175 | if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) { |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 176 | goto listen; |
| 177 | } |
Markus Armbruster | 877691f | 2012-02-07 15:09:15 +0100 | [diff] [blame] | 178 | if (p == port_max) { |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 179 | fprintf(stderr,"%s: bind(%s,%s,%d): %s\n", __FUNCTION__, |
| 180 | inet_strfamily(e->ai_family), uaddr, inet_getport(e), |
| 181 | strerror(errno)); |
Amos Kong | 029409e | 2012-05-11 00:28:26 +0800 | [diff] [blame] | 182 | if (!e->ai_next) { |
| 183 | error_set(errp, QERR_SOCKET_BIND_FAILED); |
| 184 | } |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 185 | } |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 186 | } |
| 187 | closesocket(slisten); |
| 188 | } |
| 189 | fprintf(stderr, "%s: FAILED\n", __FUNCTION__); |
| 190 | freeaddrinfo(res); |
| 191 | return -1; |
| 192 | |
| 193 | listen: |
| 194 | if (listen(slisten,1) != 0) { |
Amos Kong | 029409e | 2012-05-11 00:28:26 +0800 | [diff] [blame] | 195 | error_set(errp, QERR_SOCKET_LISTEN_FAILED); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 196 | perror("listen"); |
| 197 | closesocket(slisten); |
vibi | 39b6efc | 2009-05-06 15:27:03 +0530 | [diff] [blame] | 198 | freeaddrinfo(res); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 199 | return -1; |
| 200 | } |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 201 | snprintf(uport, sizeof(uport), "%d", inet_getport(e) - port_offset); |
| 202 | qemu_opt_set(opts, "host", uaddr); |
| 203 | qemu_opt_set(opts, "port", uport); |
| 204 | qemu_opt_set(opts, "ipv6", (e->ai_family == PF_INET6) ? "on" : "off"); |
| 205 | qemu_opt_set(opts, "ipv4", (e->ai_family != PF_INET6) ? "on" : "off"); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 206 | freeaddrinfo(res); |
| 207 | return slisten; |
| 208 | } |
| 209 | |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 210 | #ifdef _WIN32 |
| 211 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ |
| 212 | ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) |
| 213 | #else |
| 214 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ |
| 215 | ((rc) == -EINPROGRESS) |
| 216 | #endif |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 217 | |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 218 | /* Struct to store connect state for non blocking connect */ |
| 219 | typedef struct ConnectState { |
| 220 | int fd; |
| 221 | struct addrinfo *addr_list; |
| 222 | struct addrinfo *current_addr; |
| 223 | NonBlockingConnectHandler *callback; |
| 224 | void *opaque; |
| 225 | } ConnectState; |
| 226 | |
| 227 | static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, |
| 228 | ConnectState *connect_state); |
| 229 | |
| 230 | static void wait_for_connect(void *opaque) |
| 231 | { |
| 232 | ConnectState *s = opaque; |
| 233 | int val = 0, rc = 0; |
| 234 | socklen_t valsize = sizeof(val); |
| 235 | bool in_progress; |
| 236 | |
| 237 | qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL); |
| 238 | |
| 239 | do { |
| 240 | rc = getsockopt(s->fd, SOL_SOCKET, SO_ERROR, (void *) &val, &valsize); |
| 241 | } while (rc == -1 && socket_error() == EINTR); |
| 242 | |
| 243 | /* update rc to contain error */ |
| 244 | if (!rc && val) { |
| 245 | rc = -1; |
| 246 | } |
| 247 | |
| 248 | /* connect error */ |
| 249 | if (rc < 0) { |
| 250 | closesocket(s->fd); |
| 251 | s->fd = rc; |
| 252 | } |
| 253 | |
| 254 | /* try to connect to the next address on the list */ |
| 255 | while (s->current_addr->ai_next != NULL && s->fd < 0) { |
| 256 | s->current_addr = s->current_addr->ai_next; |
| 257 | s->fd = inet_connect_addr(s->current_addr, &in_progress, s); |
| 258 | /* connect in progress */ |
| 259 | if (in_progress) { |
| 260 | return; |
| 261 | } |
| 262 | } |
| 263 | |
| 264 | freeaddrinfo(s->addr_list); |
| 265 | if (s->callback) { |
| 266 | s->callback(s->fd, s->opaque); |
| 267 | } |
| 268 | g_free(s); |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 269 | } |
| 270 | |
| 271 | static int inet_connect_addr(struct addrinfo *addr, bool *in_progress, |
| 272 | ConnectState *connect_state) |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 273 | { |
| 274 | int sock, rc; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 275 | |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 276 | *in_progress = false; |
Luiz Capitulino | 02a08fe | 2012-08-01 13:42:47 -0300 | [diff] [blame] | 277 | |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 278 | sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); |
| 279 | if (sock < 0) { |
| 280 | fprintf(stderr, "%s: socket(%s): %s\n", __func__, |
| 281 | inet_strfamily(addr->ai_family), strerror(errno)); |
| 282 | return -1; |
| 283 | } |
Stefan Weil | 58455eb | 2012-09-28 19:07:39 +0200 | [diff] [blame] | 284 | qemu_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)); |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 285 | if (connect_state != NULL) { |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 286 | socket_set_nonblock(sock); |
| 287 | } |
| 288 | /* connect to peer */ |
| 289 | do { |
| 290 | rc = 0; |
| 291 | if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { |
| 292 | rc = -socket_error(); |
| 293 | } |
| 294 | } while (rc == -EINTR); |
| 295 | |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 296 | if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) { |
| 297 | connect_state->fd = sock; |
| 298 | qemu_set_fd_handler2(sock, NULL, NULL, wait_for_connect, |
| 299 | connect_state); |
| 300 | *in_progress = true; |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 301 | } else if (rc < 0) { |
| 302 | closesocket(sock); |
| 303 | return -1; |
| 304 | } |
| 305 | return sock; |
| 306 | } |
| 307 | |
| 308 | static struct addrinfo *inet_parse_connect_opts(QemuOpts *opts, Error **errp) |
| 309 | { |
| 310 | struct addrinfo ai, *res; |
| 311 | int rc; |
| 312 | const char *addr; |
| 313 | const char *port; |
| 314 | |
| 315 | memset(&ai, 0, sizeof(ai)); |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 316 | |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 317 | ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; |
| 318 | ai.ai_family = PF_UNSPEC; |
| 319 | ai.ai_socktype = SOCK_STREAM; |
| 320 | |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 321 | addr = qemu_opt_get(opts, "host"); |
| 322 | port = qemu_opt_get(opts, "port"); |
| 323 | if (addr == NULL || port == NULL) { |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 324 | fprintf(stderr, |
| 325 | "inet_parse_connect_opts: host and/or port not specified\n"); |
Amos Kong | a6ba35b | 2012-05-11 00:28:16 +0800 | [diff] [blame] | 326 | error_set(errp, QERR_SOCKET_CREATE_FAILED); |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 327 | return NULL; |
| 328 | } |
| 329 | |
| 330 | if (qemu_opt_get_bool(opts, "ipv4", 0)) { |
| 331 | ai.ai_family = PF_INET; |
| 332 | } |
| 333 | if (qemu_opt_get_bool(opts, "ipv6", 0)) { |
| 334 | ai.ai_family = PF_INET6; |
| 335 | } |
| 336 | |
| 337 | /* lookup */ |
| 338 | rc = getaddrinfo(addr, port, &ai, &res); |
| 339 | if (rc != 0) { |
| 340 | fprintf(stderr, "getaddrinfo(%s,%s): %s\n", addr, port, |
| 341 | gai_strerror(rc)); |
| 342 | error_set(errp, QERR_SOCKET_CREATE_FAILED); |
| 343 | return NULL; |
| 344 | } |
| 345 | return res; |
| 346 | } |
| 347 | |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 348 | /** |
| 349 | * Create a socket and connect it to an address. |
| 350 | * |
| 351 | * @opts: QEMU options, recognized parameters strings "host" and "port", |
| 352 | * bools "ipv4" and "ipv6". |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 353 | * @errp: set on error |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 354 | * @callback: callback function for non-blocking connect |
| 355 | * @opaque: opaque for callback function |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 356 | * |
| 357 | * Returns: -1 on error, file descriptor on success. |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 358 | * |
| 359 | * If @callback is non-null, the connect is non-blocking. If this |
| 360 | * function succeeds, callback will be called when the connection |
| 361 | * completes, with the file descriptor on success, or -1 on error. |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 362 | */ |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 363 | int inet_connect_opts(QemuOpts *opts, Error **errp, |
| 364 | NonBlockingConnectHandler *callback, void *opaque) |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 365 | { |
| 366 | struct addrinfo *res, *e; |
| 367 | int sock = -1; |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 368 | bool in_progress; |
| 369 | ConnectState *connect_state = NULL; |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 370 | |
| 371 | res = inet_parse_connect_opts(opts, errp); |
| 372 | if (!res) { |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 373 | return -1; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 374 | } |
| 375 | |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 376 | if (callback != NULL) { |
| 377 | connect_state = g_malloc0(sizeof(*connect_state)); |
| 378 | connect_state->addr_list = res; |
| 379 | connect_state->callback = callback; |
| 380 | connect_state->opaque = opaque; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 381 | } |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 382 | |
| 383 | for (e = res; e != NULL; e = e->ai_next) { |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 384 | if (connect_state != NULL) { |
| 385 | connect_state->current_addr = e; |
| 386 | } |
| 387 | sock = inet_connect_addr(e, &in_progress, connect_state); |
| 388 | if (in_progress) { |
| 389 | return sock; |
| 390 | } else if (sock >= 0) { |
| 391 | /* non blocking socket immediate success, call callback */ |
| 392 | if (callback != NULL) { |
| 393 | callback(sock, opaque); |
| 394 | } |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 395 | break; |
vibi | 39b6efc | 2009-05-06 15:27:03 +0530 | [diff] [blame] | 396 | } |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 397 | } |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 398 | if (sock < 0) { |
| 399 | error_set(errp, QERR_SOCKET_CONNECT_FAILED); |
| 400 | } |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 401 | g_free(connect_state); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 402 | freeaddrinfo(res); |
Michael S. Tsirkin | 05bc1d8 | 2012-09-24 13:11:07 +0200 | [diff] [blame] | 403 | return sock; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 404 | } |
| 405 | |
Gerd Hoffmann | 7e1b35b | 2009-09-10 10:58:51 +0200 | [diff] [blame] | 406 | int inet_dgram_opts(QemuOpts *opts) |
| 407 | { |
| 408 | struct addrinfo ai, *peer = NULL, *local = NULL; |
| 409 | const char *addr; |
| 410 | const char *port; |
| 411 | char uaddr[INET6_ADDRSTRLEN+1]; |
| 412 | char uport[33]; |
| 413 | int sock = -1, rc; |
| 414 | |
| 415 | /* lookup peer addr */ |
| 416 | memset(&ai,0, sizeof(ai)); |
| 417 | ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; |
| 418 | ai.ai_family = PF_UNSPEC; |
| 419 | ai.ai_socktype = SOCK_DGRAM; |
| 420 | |
| 421 | addr = qemu_opt_get(opts, "host"); |
| 422 | port = qemu_opt_get(opts, "port"); |
| 423 | if (addr == NULL || strlen(addr) == 0) { |
| 424 | addr = "localhost"; |
| 425 | } |
| 426 | if (port == NULL || strlen(port) == 0) { |
| 427 | fprintf(stderr, "inet_dgram: port not specified\n"); |
| 428 | return -1; |
| 429 | } |
| 430 | |
| 431 | if (qemu_opt_get_bool(opts, "ipv4", 0)) |
| 432 | ai.ai_family = PF_INET; |
| 433 | if (qemu_opt_get_bool(opts, "ipv6", 0)) |
| 434 | ai.ai_family = PF_INET6; |
| 435 | |
| 436 | if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) { |
| 437 | fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port, |
| 438 | gai_strerror(rc)); |
| 439 | return -1; |
| 440 | } |
Gerd Hoffmann | 7e1b35b | 2009-09-10 10:58:51 +0200 | [diff] [blame] | 441 | |
| 442 | /* lookup local addr */ |
| 443 | memset(&ai,0, sizeof(ai)); |
| 444 | ai.ai_flags = AI_PASSIVE; |
| 445 | ai.ai_family = peer->ai_family; |
| 446 | ai.ai_socktype = SOCK_DGRAM; |
| 447 | |
| 448 | addr = qemu_opt_get(opts, "localaddr"); |
| 449 | port = qemu_opt_get(opts, "localport"); |
| 450 | if (addr == NULL || strlen(addr) == 0) { |
| 451 | addr = NULL; |
| 452 | } |
| 453 | if (!port || strlen(port) == 0) |
| 454 | port = "0"; |
| 455 | |
| 456 | if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) { |
| 457 | fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port, |
| 458 | gai_strerror(rc)); |
Stefan Weil | 39b3845 | 2012-09-01 09:40:26 +0200 | [diff] [blame] | 459 | goto err; |
Gerd Hoffmann | 7e1b35b | 2009-09-10 10:58:51 +0200 | [diff] [blame] | 460 | } |
Gerd Hoffmann | 7e1b35b | 2009-09-10 10:58:51 +0200 | [diff] [blame] | 461 | |
| 462 | /* create socket */ |
Kevin Wolf | 40ff6d7 | 2009-12-02 12:24:42 +0100 | [diff] [blame] | 463 | sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); |
Gerd Hoffmann | 7e1b35b | 2009-09-10 10:58:51 +0200 | [diff] [blame] | 464 | if (sock < 0) { |
| 465 | fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__, |
| 466 | inet_strfamily(peer->ai_family), strerror(errno)); |
| 467 | goto err; |
| 468 | } |
| 469 | setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on)); |
| 470 | |
| 471 | /* bind socket */ |
| 472 | if (getnameinfo((struct sockaddr*)local->ai_addr,local->ai_addrlen, |
| 473 | uaddr,INET6_ADDRSTRLEN,uport,32, |
| 474 | NI_NUMERICHOST | NI_NUMERICSERV) != 0) { |
| 475 | fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__); |
| 476 | goto err; |
| 477 | } |
| 478 | if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { |
| 479 | fprintf(stderr,"%s: bind(%s,%s,%d): OK\n", __FUNCTION__, |
| 480 | inet_strfamily(local->ai_family), uaddr, inet_getport(local)); |
| 481 | goto err; |
| 482 | } |
| 483 | |
| 484 | /* connect to peer */ |
| 485 | if (getnameinfo((struct sockaddr*)peer->ai_addr, peer->ai_addrlen, |
| 486 | uaddr, INET6_ADDRSTRLEN, uport, 32, |
| 487 | NI_NUMERICHOST | NI_NUMERICSERV) != 0) { |
| 488 | fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__); |
| 489 | goto err; |
| 490 | } |
| 491 | if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { |
| 492 | fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__, |
| 493 | inet_strfamily(peer->ai_family), |
| 494 | peer->ai_canonname, uaddr, uport, strerror(errno)); |
| 495 | goto err; |
| 496 | } |
| 497 | |
| 498 | freeaddrinfo(local); |
| 499 | freeaddrinfo(peer); |
| 500 | return sock; |
| 501 | |
| 502 | err: |
| 503 | if (-1 != sock) |
| 504 | closesocket(sock); |
| 505 | if (local) |
| 506 | freeaddrinfo(local); |
| 507 | if (peer) |
| 508 | freeaddrinfo(peer); |
| 509 | return -1; |
| 510 | } |
| 511 | |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 512 | /* compatibility wrapper */ |
| 513 | static int inet_parse(QemuOpts *opts, const char *str) |
| 514 | { |
| 515 | const char *optstr, *h; |
| 516 | char addr[64]; |
| 517 | char port[33]; |
| 518 | int pos; |
| 519 | |
| 520 | /* parse address */ |
| 521 | if (str[0] == ':') { |
| 522 | /* no host given */ |
| 523 | addr[0] = '\0'; |
| 524 | if (1 != sscanf(str,":%32[^,]%n",port,&pos)) { |
| 525 | fprintf(stderr, "%s: portonly parse error (%s)\n", |
| 526 | __FUNCTION__, str); |
| 527 | return -1; |
| 528 | } |
| 529 | } else if (str[0] == '[') { |
| 530 | /* IPv6 addr */ |
| 531 | if (2 != sscanf(str,"[%64[^]]]:%32[^,]%n",addr,port,&pos)) { |
| 532 | fprintf(stderr, "%s: ipv6 parse error (%s)\n", |
| 533 | __FUNCTION__, str); |
| 534 | return -1; |
| 535 | } |
Marcelo Tosatti | 2198a62 | 2010-02-09 15:31:46 -0200 | [diff] [blame] | 536 | qemu_opt_set(opts, "ipv6", "on"); |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 537 | } else if (qemu_isdigit(str[0])) { |
| 538 | /* IPv4 addr */ |
| 539 | if (2 != sscanf(str,"%64[0-9.]:%32[^,]%n",addr,port,&pos)) { |
| 540 | fprintf(stderr, "%s: ipv4 parse error (%s)\n", |
| 541 | __FUNCTION__, str); |
| 542 | return -1; |
| 543 | } |
Marcelo Tosatti | 2198a62 | 2010-02-09 15:31:46 -0200 | [diff] [blame] | 544 | qemu_opt_set(opts, "ipv4", "on"); |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 545 | } else { |
| 546 | /* hostname */ |
| 547 | if (2 != sscanf(str,"%64[^:]:%32[^,]%n",addr,port,&pos)) { |
| 548 | fprintf(stderr, "%s: hostname parse error (%s)\n", |
| 549 | __FUNCTION__, str); |
| 550 | return -1; |
| 551 | } |
| 552 | } |
| 553 | qemu_opt_set(opts, "host", addr); |
| 554 | qemu_opt_set(opts, "port", port); |
| 555 | |
| 556 | /* parse options */ |
| 557 | optstr = str + pos; |
| 558 | h = strstr(optstr, ",to="); |
| 559 | if (h) |
| 560 | qemu_opt_set(opts, "to", h+4); |
| 561 | if (strstr(optstr, ",ipv4")) |
Marcelo Tosatti | 2198a62 | 2010-02-09 15:31:46 -0200 | [diff] [blame] | 562 | qemu_opt_set(opts, "ipv4", "on"); |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 563 | if (strstr(optstr, ",ipv6")) |
Marcelo Tosatti | 2198a62 | 2010-02-09 15:31:46 -0200 | [diff] [blame] | 564 | qemu_opt_set(opts, "ipv6", "on"); |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 565 | return 0; |
| 566 | } |
| 567 | |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 568 | int inet_listen(const char *str, char *ostr, int olen, |
Amos Kong | 029409e | 2012-05-11 00:28:26 +0800 | [diff] [blame] | 569 | int socktype, int port_offset, Error **errp) |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 570 | { |
| 571 | QemuOpts *opts; |
| 572 | char *optstr; |
| 573 | int sock = -1; |
| 574 | |
Luiz Capitulino | 8be7e7e | 2012-03-20 15:51:57 -0300 | [diff] [blame] | 575 | opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL); |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 576 | if (inet_parse(opts, str) == 0) { |
Amos Kong | 029409e | 2012-05-11 00:28:26 +0800 | [diff] [blame] | 577 | sock = inet_listen_opts(opts, port_offset, errp); |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 578 | if (sock != -1 && ostr) { |
| 579 | optstr = strchr(str, ','); |
| 580 | if (qemu_opt_get_bool(opts, "ipv6", 0)) { |
| 581 | snprintf(ostr, olen, "[%s]:%s%s", |
| 582 | qemu_opt_get(opts, "host"), |
| 583 | qemu_opt_get(opts, "port"), |
| 584 | optstr ? optstr : ""); |
| 585 | } else { |
| 586 | snprintf(ostr, olen, "%s:%s%s", |
| 587 | qemu_opt_get(opts, "host"), |
| 588 | qemu_opt_get(opts, "port"), |
| 589 | optstr ? optstr : ""); |
| 590 | } |
| 591 | } |
Amos Kong | 029409e | 2012-05-11 00:28:26 +0800 | [diff] [blame] | 592 | } else { |
| 593 | error_set(errp, QERR_SOCKET_CREATE_FAILED); |
Gerd Hoffmann | e5bc776 | 2009-09-10 10:58:41 +0200 | [diff] [blame] | 594 | } |
| 595 | qemu_opts_del(opts); |
| 596 | return sock; |
| 597 | } |
| 598 | |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 599 | /** |
| 600 | * Create a blocking socket and connect it to an address. |
| 601 | * |
| 602 | * @str: address string |
| 603 | * @errp: set in case of an error |
| 604 | * |
| 605 | * Returns -1 in case of error, file descriptor on success |
| 606 | **/ |
| 607 | int inet_connect(const char *str, Error **errp) |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 608 | { |
| 609 | QemuOpts *opts; |
| 610 | int sock = -1; |
| 611 | |
Luiz Capitulino | 8be7e7e | 2012-03-20 15:51:57 -0300 | [diff] [blame] | 612 | opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL); |
Amos Kong | a6ba35b | 2012-05-11 00:28:16 +0800 | [diff] [blame] | 613 | if (inet_parse(opts, str) == 0) { |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 614 | sock = inet_connect_opts(opts, errp, NULL, NULL); |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 615 | } else { |
| 616 | error_set(errp, QERR_SOCKET_CREATE_FAILED); |
| 617 | } |
| 618 | qemu_opts_del(opts); |
| 619 | return sock; |
| 620 | } |
| 621 | |
| 622 | /** |
| 623 | * Create a non-blocking socket and connect it to an address. |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 624 | * Calls the callback function with fd in case of success or -1 in case of |
| 625 | * error. |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 626 | * |
| 627 | * @str: address string |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 628 | * @callback: callback function that is called when connect completes, |
| 629 | * cannot be NULL. |
| 630 | * @opaque: opaque for callback function |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 631 | * @errp: set in case of an error |
| 632 | * |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 633 | * Returns: -1 on immediate error, file descriptor on success. |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 634 | **/ |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 635 | int inet_nonblocking_connect(const char *str, |
| 636 | NonBlockingConnectHandler *callback, |
| 637 | void *opaque, Error **errp) |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 638 | { |
| 639 | QemuOpts *opts; |
| 640 | int sock = -1; |
| 641 | |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 642 | g_assert(callback != NULL); |
| 643 | |
Orit Wasserman | 5db5f44 | 2012-09-24 13:11:08 +0200 | [diff] [blame] | 644 | opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL); |
| 645 | if (inet_parse(opts, str) == 0) { |
Orit Wasserman | 233aa5c | 2012-09-24 13:11:09 +0200 | [diff] [blame] | 646 | sock = inet_connect_opts(opts, errp, callback, opaque); |
Amos Kong | a6ba35b | 2012-05-11 00:28:16 +0800 | [diff] [blame] | 647 | } else { |
| 648 | error_set(errp, QERR_SOCKET_CREATE_FAILED); |
| 649 | } |
Gerd Hoffmann | f4c94c7 | 2009-09-10 10:58:40 +0200 | [diff] [blame] | 650 | qemu_opts_del(opts); |
| 651 | return sock; |
| 652 | } |
| 653 | |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 654 | #ifndef _WIN32 |
| 655 | |
Gerd Hoffmann | 62b6adf | 2009-09-10 10:58:38 +0200 | [diff] [blame] | 656 | int unix_listen_opts(QemuOpts *opts) |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 657 | { |
| 658 | struct sockaddr_un un; |
Gerd Hoffmann | 62b6adf | 2009-09-10 10:58:38 +0200 | [diff] [blame] | 659 | const char *path = qemu_opt_get(opts, "path"); |
| 660 | int sock, fd; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 661 | |
Kevin Wolf | 40ff6d7 | 2009-12-02 12:24:42 +0100 | [diff] [blame] | 662 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 663 | if (sock < 0) { |
vibi | 39b6efc | 2009-05-06 15:27:03 +0530 | [diff] [blame] | 664 | perror("socket(unix)"); |
| 665 | return -1; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 666 | } |
| 667 | |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 668 | memset(&un, 0, sizeof(un)); |
| 669 | un.sun_family = AF_UNIX; |
| 670 | if (path && strlen(path)) { |
| 671 | snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); |
| 672 | } else { |
| 673 | char *tmpdir = getenv("TMPDIR"); |
| 674 | snprintf(un.sun_path, sizeof(un.sun_path), "%s/qemu-socket-XXXXXX", |
| 675 | tmpdir ? tmpdir : "/tmp"); |
| 676 | /* |
| 677 | * This dummy fd usage silences the mktemp() unsecure warning. |
| 678 | * Using mkstemp() doesn't make things more secure here |
| 679 | * though. bind() complains about existing files, so we have |
| 680 | * to unlink first and thus re-open the race window. The |
| 681 | * worst case possible is bind() failing, i.e. a DoS attack. |
| 682 | */ |
| 683 | fd = mkstemp(un.sun_path); close(fd); |
Gerd Hoffmann | 62b6adf | 2009-09-10 10:58:38 +0200 | [diff] [blame] | 684 | qemu_opt_set(opts, "path", un.sun_path); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 685 | } |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 686 | |
| 687 | unlink(un.sun_path); |
| 688 | if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { |
| 689 | fprintf(stderr, "bind(unix:%s): %s\n", un.sun_path, strerror(errno)); |
| 690 | goto err; |
| 691 | } |
| 692 | if (listen(sock, 1) < 0) { |
| 693 | fprintf(stderr, "listen(unix:%s): %s\n", un.sun_path, strerror(errno)); |
| 694 | goto err; |
| 695 | } |
| 696 | |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 697 | return sock; |
| 698 | |
| 699 | err: |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 700 | closesocket(sock); |
| 701 | return -1; |
| 702 | } |
| 703 | |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 704 | int unix_connect_opts(QemuOpts *opts) |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 705 | { |
| 706 | struct sockaddr_un un; |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 707 | const char *path = qemu_opt_get(opts, "path"); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 708 | int sock; |
| 709 | |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 710 | if (NULL == path) { |
| 711 | fprintf(stderr, "unix connect: no path specified\n"); |
| 712 | return -1; |
| 713 | } |
| 714 | |
Kevin Wolf | 40ff6d7 | 2009-12-02 12:24:42 +0100 | [diff] [blame] | 715 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 716 | if (sock < 0) { |
vibi | 39b6efc | 2009-05-06 15:27:03 +0530 | [diff] [blame] | 717 | perror("socket(unix)"); |
| 718 | return -1; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 719 | } |
| 720 | |
| 721 | memset(&un, 0, sizeof(un)); |
| 722 | un.sun_family = AF_UNIX; |
| 723 | snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); |
| 724 | if (connect(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { |
| 725 | fprintf(stderr, "connect(unix:%s): %s\n", path, strerror(errno)); |
Markus Armbruster | 9d94747 | 2011-11-11 10:40:07 +0100 | [diff] [blame] | 726 | close(sock); |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 727 | return -1; |
| 728 | } |
| 729 | |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 730 | return sock; |
| 731 | } |
| 732 | |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 733 | /* compatibility wrapper */ |
Gerd Hoffmann | 62b6adf | 2009-09-10 10:58:38 +0200 | [diff] [blame] | 734 | int unix_listen(const char *str, char *ostr, int olen) |
| 735 | { |
| 736 | QemuOpts *opts; |
| 737 | char *path, *optstr; |
| 738 | int sock, len; |
| 739 | |
Luiz Capitulino | 8be7e7e | 2012-03-20 15:51:57 -0300 | [diff] [blame] | 740 | opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL); |
Gerd Hoffmann | 62b6adf | 2009-09-10 10:58:38 +0200 | [diff] [blame] | 741 | |
| 742 | optstr = strchr(str, ','); |
| 743 | if (optstr) { |
| 744 | len = optstr - str; |
| 745 | if (len) { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 746 | path = g_malloc(len+1); |
Gerd Hoffmann | 62b6adf | 2009-09-10 10:58:38 +0200 | [diff] [blame] | 747 | snprintf(path, len+1, "%.*s", len, str); |
| 748 | qemu_opt_set(opts, "path", path); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 749 | g_free(path); |
Gerd Hoffmann | 62b6adf | 2009-09-10 10:58:38 +0200 | [diff] [blame] | 750 | } |
| 751 | } else { |
| 752 | qemu_opt_set(opts, "path", str); |
| 753 | } |
| 754 | |
| 755 | sock = unix_listen_opts(opts); |
| 756 | |
| 757 | if (sock != -1 && ostr) |
| 758 | snprintf(ostr, olen, "%s%s", qemu_opt_get(opts, "path"), optstr ? optstr : ""); |
| 759 | qemu_opts_del(opts); |
| 760 | return sock; |
| 761 | } |
| 762 | |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 763 | int unix_connect(const char *path) |
| 764 | { |
| 765 | QemuOpts *opts; |
| 766 | int sock; |
| 767 | |
Luiz Capitulino | 8be7e7e | 2012-03-20 15:51:57 -0300 | [diff] [blame] | 768 | opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL); |
Gerd Hoffmann | 2af2bf6 | 2009-09-10 10:58:37 +0200 | [diff] [blame] | 769 | qemu_opt_set(opts, "path", path); |
| 770 | sock = unix_connect_opts(opts); |
| 771 | qemu_opts_del(opts); |
| 772 | return sock; |
| 773 | } |
| 774 | |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 775 | #else |
| 776 | |
Gerd Hoffmann | 108af7b | 2009-09-10 10:58:39 +0200 | [diff] [blame] | 777 | int unix_listen_opts(QemuOpts *opts) |
| 778 | { |
| 779 | fprintf(stderr, "unix sockets are not available on windows\n"); |
Nick Thomas | b82eac9 | 2011-02-22 15:44:52 +0000 | [diff] [blame] | 780 | errno = ENOTSUP; |
Gerd Hoffmann | 108af7b | 2009-09-10 10:58:39 +0200 | [diff] [blame] | 781 | return -1; |
| 782 | } |
| 783 | |
| 784 | int unix_connect_opts(QemuOpts *opts) |
| 785 | { |
| 786 | fprintf(stderr, "unix sockets are not available on windows\n"); |
Nick Thomas | b82eac9 | 2011-02-22 15:44:52 +0000 | [diff] [blame] | 787 | errno = ENOTSUP; |
Gerd Hoffmann | 108af7b | 2009-09-10 10:58:39 +0200 | [diff] [blame] | 788 | return -1; |
| 789 | } |
| 790 | |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 791 | int unix_listen(const char *path, char *ostr, int olen) |
| 792 | { |
| 793 | fprintf(stderr, "unix sockets are not available on windows\n"); |
Nick Thomas | b82eac9 | 2011-02-22 15:44:52 +0000 | [diff] [blame] | 794 | errno = ENOTSUP; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 795 | return -1; |
| 796 | } |
| 797 | |
| 798 | int unix_connect(const char *path) |
| 799 | { |
| 800 | fprintf(stderr, "unix sockets are not available on windows\n"); |
Nick Thomas | b82eac9 | 2011-02-22 15:44:52 +0000 | [diff] [blame] | 801 | errno = ENOTSUP; |
aliguori | d247d25 | 2008-11-11 20:46:40 +0000 | [diff] [blame] | 802 | return -1; |
| 803 | } |
| 804 | |
| 805 | #endif |
Paolo Bonzini | 0706a4d | 2010-04-01 19:57:08 +0200 | [diff] [blame] | 806 | |
| 807 | #ifdef _WIN32 |
| 808 | static void socket_cleanup(void) |
| 809 | { |
| 810 | WSACleanup(); |
| 811 | } |
| 812 | #endif |
| 813 | |
| 814 | int socket_init(void) |
| 815 | { |
| 816 | #ifdef _WIN32 |
| 817 | WSADATA Data; |
| 818 | int ret, err; |
| 819 | |
| 820 | ret = WSAStartup(MAKEWORD(2,2), &Data); |
| 821 | if (ret != 0) { |
| 822 | err = WSAGetLastError(); |
| 823 | fprintf(stderr, "WSAStartup: %d\n", err); |
| 824 | return -1; |
| 825 | } |
| 826 | atexit(socket_cleanup); |
| 827 | #endif |
| 828 | return 0; |
| 829 | } |