root / qemu-sockets.c @ 60e1b2a6
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/*
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* inet and unix socket functions for qemu
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*
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* (c) 2008 Gerd Hoffmann <kraxel@redhat.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; under version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <ctype.h> |
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#include <errno.h> |
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#include <unistd.h> |
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#include "qemu_socket.h" |
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#include "qemu-common.h" /* for qemu_isdigit */ |
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|
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#ifndef AI_ADDRCONFIG
|
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# define AI_ADDRCONFIG 0 |
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#endif
|
28 |
|
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static const int on=1, off=0; |
30 |
|
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/* used temporarely until all users are converted to QemuOpts */
|
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static QemuOptsList dummy_opts = {
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.name = "dummy",
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.head = QTAILQ_HEAD_INITIALIZER(dummy_opts.head), |
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.desc = { |
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{ |
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.name = "path",
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.type = QEMU_OPT_STRING, |
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},{ |
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.name = "host",
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.type = QEMU_OPT_STRING, |
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},{ |
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.name = "port",
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.type = QEMU_OPT_STRING, |
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},{ |
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.name = "to",
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.type = QEMU_OPT_NUMBER, |
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},{ |
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.name = "ipv4",
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.type = QEMU_OPT_BOOL, |
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},{ |
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.name = "ipv6",
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.type = QEMU_OPT_BOOL, |
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}, |
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{ /* end if list */ }
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}, |
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}; |
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|
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static int inet_getport(struct addrinfo *e) |
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{ |
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struct sockaddr_in *i4;
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struct sockaddr_in6 *i6;
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|
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switch (e->ai_family) {
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case PF_INET6:
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i6 = (void*)e->ai_addr;
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return ntohs(i6->sin6_port);
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case PF_INET:
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i4 = (void*)e->ai_addr;
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return ntohs(i4->sin_port);
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default:
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return 0; |
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} |
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} |
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|
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static void inet_setport(struct addrinfo *e, int port) |
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{ |
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struct sockaddr_in *i4;
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struct sockaddr_in6 *i6;
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|
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switch (e->ai_family) {
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case PF_INET6:
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i6 = (void*)e->ai_addr;
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i6->sin6_port = htons(port); |
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break;
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case PF_INET:
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i4 = (void*)e->ai_addr;
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i4->sin_port = htons(port); |
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break;
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} |
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} |
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|
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const char *inet_strfamily(int family) |
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{ |
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switch (family) {
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case PF_INET6: return "ipv6"; |
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case PF_INET: return "ipv4"; |
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case PF_UNIX: return "unix"; |
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} |
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return "unknown"; |
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} |
102 |
|
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int inet_listen_opts(QemuOpts *opts, int port_offset) |
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{ |
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struct addrinfo ai,*res,*e;
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const char *addr; |
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char port[33]; |
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char uaddr[INET6_ADDRSTRLEN+1]; |
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char uport[33]; |
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int slisten, rc, to, port_min, port_max, p;
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|
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memset(&ai,0, sizeof(ai)); |
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ai.ai_flags = AI_PASSIVE | AI_ADDRCONFIG; |
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ai.ai_family = PF_UNSPEC; |
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ai.ai_socktype = SOCK_STREAM; |
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|
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if ((qemu_opt_get(opts, "host") == NULL) || |
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(qemu_opt_get(opts, "port") == NULL)) { |
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fprintf(stderr, "%s: host and/or port not specified\n", __FUNCTION__);
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return -1; |
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} |
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pstrcpy(port, sizeof(port), qemu_opt_get(opts, "port")); |
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addr = qemu_opt_get(opts, "host");
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to = qemu_opt_get_number(opts, "to", 0); |
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if (qemu_opt_get_bool(opts, "ipv4", 0)) |
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ai.ai_family = PF_INET; |
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if (qemu_opt_get_bool(opts, "ipv6", 0)) |
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ai.ai_family = PF_INET6; |
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|
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/* lookup */
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if (port_offset)
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snprintf(port, sizeof(port), "%d", atoi(port) + port_offset); |
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rc = getaddrinfo(strlen(addr) ? addr : NULL, port, &ai, &res);
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if (rc != 0) { |
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fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
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gai_strerror(rc)); |
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return -1; |
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} |
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|
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/* create socket + bind */
|
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for (e = res; e != NULL; e = e->ai_next) { |
143 |
getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen,
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uaddr,INET6_ADDRSTRLEN,uport,32,
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NI_NUMERICHOST | NI_NUMERICSERV); |
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slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); |
147 |
if (slisten < 0) { |
148 |
fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__,
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inet_strfamily(e->ai_family), strerror(errno)); |
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continue;
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} |
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|
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setsockopt(slisten,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on)); |
154 |
#ifdef IPV6_V6ONLY
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if (e->ai_family == PF_INET6) {
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/* listen on both ipv4 and ipv6 */
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setsockopt(slisten,IPPROTO_IPV6,IPV6_V6ONLY,(void*)&off,
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sizeof(off));
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} |
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#endif
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port_min = inet_getport(e); |
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port_max = to ? to + port_offset : port_min; |
164 |
for (p = port_min; p <= port_max; p++) {
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inet_setport(e, p); |
166 |
if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) { |
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goto listen;
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} |
169 |
if (p == port_max) {
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fprintf(stderr,"%s: bind(%s,%s,%d): %s\n", __FUNCTION__,
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inet_strfamily(e->ai_family), uaddr, inet_getport(e), |
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strerror(errno)); |
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} |
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} |
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closesocket(slisten); |
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} |
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fprintf(stderr, "%s: FAILED\n", __FUNCTION__);
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freeaddrinfo(res); |
179 |
return -1; |
180 |
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listen:
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if (listen(slisten,1) != 0) { |
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perror("listen");
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closesocket(slisten); |
185 |
freeaddrinfo(res); |
186 |
return -1; |
187 |
} |
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snprintf(uport, sizeof(uport), "%d", inet_getport(e) - port_offset); |
189 |
qemu_opt_set(opts, "host", uaddr);
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qemu_opt_set(opts, "port", uport);
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qemu_opt_set(opts, "ipv6", (e->ai_family == PF_INET6) ? "on" : "off"); |
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qemu_opt_set(opts, "ipv4", (e->ai_family != PF_INET6) ? "on" : "off"); |
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freeaddrinfo(res); |
194 |
return slisten;
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} |
196 |
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int inet_connect_opts(QemuOpts *opts)
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{ |
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struct addrinfo ai,*res,*e;
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const char *addr; |
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const char *port; |
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char uaddr[INET6_ADDRSTRLEN+1]; |
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char uport[33]; |
204 |
int sock,rc;
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memset(&ai,0, sizeof(ai)); |
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ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; |
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ai.ai_family = PF_UNSPEC; |
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ai.ai_socktype = SOCK_STREAM; |
210 |
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addr = qemu_opt_get(opts, "host");
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port = qemu_opt_get(opts, "port");
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if (addr == NULL || port == NULL) { |
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fprintf(stderr, "inet_connect: host and/or port not specified\n");
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return -1; |
216 |
} |
217 |
|
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if (qemu_opt_get_bool(opts, "ipv4", 0)) |
219 |
ai.ai_family = PF_INET; |
220 |
if (qemu_opt_get_bool(opts, "ipv6", 0)) |
221 |
ai.ai_family = PF_INET6; |
222 |
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/* lookup */
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if (0 != (rc = getaddrinfo(addr, port, &ai, &res))) { |
225 |
fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
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gai_strerror(rc)); |
227 |
return -1; |
228 |
} |
229 |
|
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for (e = res; e != NULL; e = e->ai_next) { |
231 |
if (getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, |
232 |
uaddr,INET6_ADDRSTRLEN,uport,32,
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NI_NUMERICHOST | NI_NUMERICSERV) != 0) {
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fprintf(stderr,"%s: getnameinfo: oops\n", __FUNCTION__);
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continue;
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} |
237 |
sock = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); |
238 |
if (sock < 0) { |
239 |
fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__,
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inet_strfamily(e->ai_family), strerror(errno)); |
241 |
continue;
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} |
243 |
setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on)); |
244 |
|
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/* connect to peer */
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if (connect(sock,e->ai_addr,e->ai_addrlen) < 0) { |
247 |
if (NULL == e->ai_next) |
248 |
fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__,
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inet_strfamily(e->ai_family), |
250 |
e->ai_canonname, uaddr, uport, strerror(errno)); |
251 |
closesocket(sock); |
252 |
continue;
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} |
254 |
freeaddrinfo(res); |
255 |
return sock;
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} |
257 |
freeaddrinfo(res); |
258 |
return -1; |
259 |
} |
260 |
|
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int inet_dgram_opts(QemuOpts *opts)
|
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{ |
263 |
struct addrinfo ai, *peer = NULL, *local = NULL; |
264 |
const char *addr; |
265 |
const char *port; |
266 |
char uaddr[INET6_ADDRSTRLEN+1]; |
267 |
char uport[33]; |
268 |
int sock = -1, rc; |
269 |
|
270 |
/* lookup peer addr */
|
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memset(&ai,0, sizeof(ai)); |
272 |
ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; |
273 |
ai.ai_family = PF_UNSPEC; |
274 |
ai.ai_socktype = SOCK_DGRAM; |
275 |
|
276 |
addr = qemu_opt_get(opts, "host");
|
277 |
port = qemu_opt_get(opts, "port");
|
278 |
if (addr == NULL || strlen(addr) == 0) { |
279 |
addr = "localhost";
|
280 |
} |
281 |
if (port == NULL || strlen(port) == 0) { |
282 |
fprintf(stderr, "inet_dgram: port not specified\n");
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283 |
return -1; |
284 |
} |
285 |
|
286 |
if (qemu_opt_get_bool(opts, "ipv4", 0)) |
287 |
ai.ai_family = PF_INET; |
288 |
if (qemu_opt_get_bool(opts, "ipv6", 0)) |
289 |
ai.ai_family = PF_INET6; |
290 |
|
291 |
if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) { |
292 |
fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
|
293 |
gai_strerror(rc)); |
294 |
return -1; |
295 |
} |
296 |
|
297 |
/* lookup local addr */
|
298 |
memset(&ai,0, sizeof(ai)); |
299 |
ai.ai_flags = AI_PASSIVE; |
300 |
ai.ai_family = peer->ai_family; |
301 |
ai.ai_socktype = SOCK_DGRAM; |
302 |
|
303 |
addr = qemu_opt_get(opts, "localaddr");
|
304 |
port = qemu_opt_get(opts, "localport");
|
305 |
if (addr == NULL || strlen(addr) == 0) { |
306 |
addr = NULL;
|
307 |
} |
308 |
if (!port || strlen(port) == 0) |
309 |
port = "0";
|
310 |
|
311 |
if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) { |
312 |
fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
|
313 |
gai_strerror(rc)); |
314 |
return -1; |
315 |
} |
316 |
|
317 |
/* create socket */
|
318 |
sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); |
319 |
if (sock < 0) { |
320 |
fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__,
|
321 |
inet_strfamily(peer->ai_family), strerror(errno)); |
322 |
goto err;
|
323 |
} |
324 |
setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on)); |
325 |
|
326 |
/* bind socket */
|
327 |
if (getnameinfo((struct sockaddr*)local->ai_addr,local->ai_addrlen, |
328 |
uaddr,INET6_ADDRSTRLEN,uport,32,
|
329 |
NI_NUMERICHOST | NI_NUMERICSERV) != 0) {
|
330 |
fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__);
|
331 |
goto err;
|
332 |
} |
333 |
if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { |
334 |
fprintf(stderr,"%s: bind(%s,%s,%d): OK\n", __FUNCTION__,
|
335 |
inet_strfamily(local->ai_family), uaddr, inet_getport(local)); |
336 |
goto err;
|
337 |
} |
338 |
|
339 |
/* connect to peer */
|
340 |
if (getnameinfo((struct sockaddr*)peer->ai_addr, peer->ai_addrlen, |
341 |
uaddr, INET6_ADDRSTRLEN, uport, 32,
|
342 |
NI_NUMERICHOST | NI_NUMERICSERV) != 0) {
|
343 |
fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__);
|
344 |
goto err;
|
345 |
} |
346 |
if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { |
347 |
fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__,
|
348 |
inet_strfamily(peer->ai_family), |
349 |
peer->ai_canonname, uaddr, uport, strerror(errno)); |
350 |
goto err;
|
351 |
} |
352 |
|
353 |
freeaddrinfo(local); |
354 |
freeaddrinfo(peer); |
355 |
return sock;
|
356 |
|
357 |
err:
|
358 |
if (-1 != sock) |
359 |
closesocket(sock); |
360 |
if (local)
|
361 |
freeaddrinfo(local); |
362 |
if (peer)
|
363 |
freeaddrinfo(peer); |
364 |
return -1; |
365 |
} |
366 |
|
367 |
/* compatibility wrapper */
|
368 |
static int inet_parse(QemuOpts *opts, const char *str) |
369 |
{ |
370 |
const char *optstr, *h; |
371 |
char addr[64]; |
372 |
char port[33]; |
373 |
int pos;
|
374 |
|
375 |
/* parse address */
|
376 |
if (str[0] == ':') { |
377 |
/* no host given */
|
378 |
addr[0] = '\0'; |
379 |
if (1 != sscanf(str,":%32[^,]%n",port,&pos)) { |
380 |
fprintf(stderr, "%s: portonly parse error (%s)\n",
|
381 |
__FUNCTION__, str); |
382 |
return -1; |
383 |
} |
384 |
} else if (str[0] == '[') { |
385 |
/* IPv6 addr */
|
386 |
if (2 != sscanf(str,"[%64[^]]]:%32[^,]%n",addr,port,&pos)) { |
387 |
fprintf(stderr, "%s: ipv6 parse error (%s)\n",
|
388 |
__FUNCTION__, str); |
389 |
return -1; |
390 |
} |
391 |
qemu_opt_set(opts, "ipv6", "on"); |
392 |
} else if (qemu_isdigit(str[0])) { |
393 |
/* IPv4 addr */
|
394 |
if (2 != sscanf(str,"%64[0-9.]:%32[^,]%n",addr,port,&pos)) { |
395 |
fprintf(stderr, "%s: ipv4 parse error (%s)\n",
|
396 |
__FUNCTION__, str); |
397 |
return -1; |
398 |
} |
399 |
qemu_opt_set(opts, "ipv4", "on"); |
400 |
} else {
|
401 |
/* hostname */
|
402 |
if (2 != sscanf(str,"%64[^:]:%32[^,]%n",addr,port,&pos)) { |
403 |
fprintf(stderr, "%s: hostname parse error (%s)\n",
|
404 |
__FUNCTION__, str); |
405 |
return -1; |
406 |
} |
407 |
} |
408 |
qemu_opt_set(opts, "host", addr);
|
409 |
qemu_opt_set(opts, "port", port);
|
410 |
|
411 |
/* parse options */
|
412 |
optstr = str + pos; |
413 |
h = strstr(optstr, ",to=");
|
414 |
if (h)
|
415 |
qemu_opt_set(opts, "to", h+4); |
416 |
if (strstr(optstr, ",ipv4")) |
417 |
qemu_opt_set(opts, "ipv4", "on"); |
418 |
if (strstr(optstr, ",ipv6")) |
419 |
qemu_opt_set(opts, "ipv6", "on"); |
420 |
return 0; |
421 |
} |
422 |
|
423 |
int inet_listen(const char *str, char *ostr, int olen, |
424 |
int socktype, int port_offset) |
425 |
{ |
426 |
QemuOpts *opts; |
427 |
char *optstr;
|
428 |
int sock = -1; |
429 |
|
430 |
opts = qemu_opts_create(&dummy_opts, NULL, 0); |
431 |
if (inet_parse(opts, str) == 0) { |
432 |
sock = inet_listen_opts(opts, port_offset); |
433 |
if (sock != -1 && ostr) { |
434 |
optstr = strchr(str, ',');
|
435 |
if (qemu_opt_get_bool(opts, "ipv6", 0)) { |
436 |
snprintf(ostr, olen, "[%s]:%s%s",
|
437 |
qemu_opt_get(opts, "host"),
|
438 |
qemu_opt_get(opts, "port"),
|
439 |
optstr ? optstr : "");
|
440 |
} else {
|
441 |
snprintf(ostr, olen, "%s:%s%s",
|
442 |
qemu_opt_get(opts, "host"),
|
443 |
qemu_opt_get(opts, "port"),
|
444 |
optstr ? optstr : "");
|
445 |
} |
446 |
} |
447 |
} |
448 |
qemu_opts_del(opts); |
449 |
return sock;
|
450 |
} |
451 |
|
452 |
int inet_connect(const char *str, int socktype) |
453 |
{ |
454 |
QemuOpts *opts; |
455 |
int sock = -1; |
456 |
|
457 |
opts = qemu_opts_create(&dummy_opts, NULL, 0); |
458 |
if (inet_parse(opts, str) == 0) |
459 |
sock = inet_connect_opts(opts); |
460 |
qemu_opts_del(opts); |
461 |
return sock;
|
462 |
} |
463 |
|
464 |
#ifndef _WIN32
|
465 |
|
466 |
int unix_listen_opts(QemuOpts *opts)
|
467 |
{ |
468 |
struct sockaddr_un un;
|
469 |
const char *path = qemu_opt_get(opts, "path"); |
470 |
int sock, fd;
|
471 |
|
472 |
sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0);
|
473 |
if (sock < 0) { |
474 |
perror("socket(unix)");
|
475 |
return -1; |
476 |
} |
477 |
|
478 |
memset(&un, 0, sizeof(un)); |
479 |
un.sun_family = AF_UNIX; |
480 |
if (path && strlen(path)) {
|
481 |
snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); |
482 |
} else {
|
483 |
char *tmpdir = getenv("TMPDIR"); |
484 |
snprintf(un.sun_path, sizeof(un.sun_path), "%s/qemu-socket-XXXXXX", |
485 |
tmpdir ? tmpdir : "/tmp");
|
486 |
/*
|
487 |
* This dummy fd usage silences the mktemp() unsecure warning.
|
488 |
* Using mkstemp() doesn't make things more secure here
|
489 |
* though. bind() complains about existing files, so we have
|
490 |
* to unlink first and thus re-open the race window. The
|
491 |
* worst case possible is bind() failing, i.e. a DoS attack.
|
492 |
*/
|
493 |
fd = mkstemp(un.sun_path); close(fd); |
494 |
qemu_opt_set(opts, "path", un.sun_path);
|
495 |
} |
496 |
|
497 |
unlink(un.sun_path); |
498 |
if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { |
499 |
fprintf(stderr, "bind(unix:%s): %s\n", un.sun_path, strerror(errno));
|
500 |
goto err;
|
501 |
} |
502 |
if (listen(sock, 1) < 0) { |
503 |
fprintf(stderr, "listen(unix:%s): %s\n", un.sun_path, strerror(errno));
|
504 |
goto err;
|
505 |
} |
506 |
|
507 |
return sock;
|
508 |
|
509 |
err:
|
510 |
closesocket(sock); |
511 |
return -1; |
512 |
} |
513 |
|
514 |
int unix_connect_opts(QemuOpts *opts)
|
515 |
{ |
516 |
struct sockaddr_un un;
|
517 |
const char *path = qemu_opt_get(opts, "path"); |
518 |
int sock;
|
519 |
|
520 |
if (NULL == path) { |
521 |
fprintf(stderr, "unix connect: no path specified\n");
|
522 |
return -1; |
523 |
} |
524 |
|
525 |
sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0);
|
526 |
if (sock < 0) { |
527 |
perror("socket(unix)");
|
528 |
return -1; |
529 |
} |
530 |
|
531 |
memset(&un, 0, sizeof(un)); |
532 |
un.sun_family = AF_UNIX; |
533 |
snprintf(un.sun_path, sizeof(un.sun_path), "%s", path); |
534 |
if (connect(sock, (struct sockaddr*) &un, sizeof(un)) < 0) { |
535 |
fprintf(stderr, "connect(unix:%s): %s\n", path, strerror(errno));
|
536 |
close(sock); |
537 |
return -1; |
538 |
} |
539 |
|
540 |
return sock;
|
541 |
} |
542 |
|
543 |
/* compatibility wrapper */
|
544 |
int unix_listen(const char *str, char *ostr, int olen) |
545 |
{ |
546 |
QemuOpts *opts; |
547 |
char *path, *optstr;
|
548 |
int sock, len;
|
549 |
|
550 |
opts = qemu_opts_create(&dummy_opts, NULL, 0); |
551 |
|
552 |
optstr = strchr(str, ',');
|
553 |
if (optstr) {
|
554 |
len = optstr - str; |
555 |
if (len) {
|
556 |
path = g_malloc(len+1);
|
557 |
snprintf(path, len+1, "%.*s", len, str); |
558 |
qemu_opt_set(opts, "path", path);
|
559 |
g_free(path); |
560 |
} |
561 |
} else {
|
562 |
qemu_opt_set(opts, "path", str);
|
563 |
} |
564 |
|
565 |
sock = unix_listen_opts(opts); |
566 |
|
567 |
if (sock != -1 && ostr) |
568 |
snprintf(ostr, olen, "%s%s", qemu_opt_get(opts, "path"), optstr ? optstr : ""); |
569 |
qemu_opts_del(opts); |
570 |
return sock;
|
571 |
} |
572 |
|
573 |
int unix_connect(const char *path) |
574 |
{ |
575 |
QemuOpts *opts; |
576 |
int sock;
|
577 |
|
578 |
opts = qemu_opts_create(&dummy_opts, NULL, 0); |
579 |
qemu_opt_set(opts, "path", path);
|
580 |
sock = unix_connect_opts(opts); |
581 |
qemu_opts_del(opts); |
582 |
return sock;
|
583 |
} |
584 |
|
585 |
#else
|
586 |
|
587 |
int unix_listen_opts(QemuOpts *opts)
|
588 |
{ |
589 |
fprintf(stderr, "unix sockets are not available on windows\n");
|
590 |
errno = ENOTSUP; |
591 |
return -1; |
592 |
} |
593 |
|
594 |
int unix_connect_opts(QemuOpts *opts)
|
595 |
{ |
596 |
fprintf(stderr, "unix sockets are not available on windows\n");
|
597 |
errno = ENOTSUP; |
598 |
return -1; |
599 |
} |
600 |
|
601 |
int unix_listen(const char *path, char *ostr, int olen) |
602 |
{ |
603 |
fprintf(stderr, "unix sockets are not available on windows\n");
|
604 |
errno = ENOTSUP; |
605 |
return -1; |
606 |
} |
607 |
|
608 |
int unix_connect(const char *path) |
609 |
{ |
610 |
fprintf(stderr, "unix sockets are not available on windows\n");
|
611 |
errno = ENOTSUP; |
612 |
return -1; |
613 |
} |
614 |
|
615 |
#endif
|
616 |
|
617 |
#ifdef _WIN32
|
618 |
static void socket_cleanup(void) |
619 |
{ |
620 |
WSACleanup(); |
621 |
} |
622 |
#endif
|
623 |
|
624 |
int socket_init(void) |
625 |
{ |
626 |
#ifdef _WIN32
|
627 |
WSADATA Data; |
628 |
int ret, err;
|
629 |
|
630 |
ret = WSAStartup(MAKEWORD(2,2), &Data); |
631 |
if (ret != 0) { |
632 |
err = WSAGetLastError(); |
633 |
fprintf(stderr, "WSAStartup: %d\n", err);
|
634 |
return -1; |
635 |
} |
636 |
atexit(socket_cleanup); |
637 |
#endif
|
638 |
return 0; |
639 |
} |