[qemu.git] / qemu-sockets.c

/*
 *  inet and unix socket functions for qemu
 *
 *  (c) 2008 Gerd Hoffmann <kraxel@redhat.com>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; under version 2 of the License.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 * Contributions after 2012-01-13 are licensed under the terms of the
 * GNU GPL, version 2 or (at your option) any later version.
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include <unistd.h>

#include "qemu_socket.h"
#include "qemu-common.h" /* for qemu_isdigit */

#ifndef AI_ADDRCONFIG
# define AI_ADDRCONFIG 0
#endif

static const int on=1, off=0;

/* used temporarely until all users are converted to QemuOpts */
static QemuOptsList dummy_opts = {
    .name = "dummy",
    .head = QTAILQ_HEAD_INITIALIZER(dummy_opts.head),
    .desc = {
        {
            .name = "path",
            .type = QEMU_OPT_STRING,
        },{
            .name = "host",
            .type = QEMU_OPT_STRING,
        },{
            .name = "port",
            .type = QEMU_OPT_STRING,
        },{
            .name = "to",
            .type = QEMU_OPT_NUMBER,
        },{
            .name = "ipv4",
            .type = QEMU_OPT_BOOL,
        },{
            .name = "ipv6",
            .type = QEMU_OPT_BOOL,
        },{
            .name = "block",
            .type = QEMU_OPT_BOOL,
        },
        { /* end if list */ }
    },
};

static int inet_getport(struct addrinfo *e)
{
    struct sockaddr_in *i4;
    struct sockaddr_in6 *i6;

    switch (e->ai_family) {
    case PF_INET6:
        i6 = (void*)e->ai_addr;
        return ntohs(i6->sin6_port);
    case PF_INET:
        i4 = (void*)e->ai_addr;
        return ntohs(i4->sin_port);
    default:
        return 0;
    }
}

static void inet_setport(struct addrinfo *e, int port)
{
    struct sockaddr_in *i4;
    struct sockaddr_in6 *i6;

    switch (e->ai_family) {
    case PF_INET6:
        i6 = (void*)e->ai_addr;
        i6->sin6_port = htons(port);
        break;
    case PF_INET:
        i4 = (void*)e->ai_addr;
        i4->sin_port = htons(port);
        break;
    }
}

const char *inet_strfamily(int family)
{
    switch (family) {
    case PF_INET6: return "ipv6";
    case PF_INET:  return "ipv4";
    case PF_UNIX:  return "unix";
    }
    return "unknown";
}

int inet_listen_opts(QemuOpts *opts, int port_offset, Error **errp)
{
    struct addrinfo ai,*res,*e;
    const char *addr;
    char port[33];
    char uaddr[INET6_ADDRSTRLEN+1];
    char uport[33];
    int slisten, rc, to, port_min, port_max, p;

    memset(&ai,0, sizeof(ai));
    ai.ai_flags = AI_PASSIVE | AI_ADDRCONFIG;
    ai.ai_family = PF_UNSPEC;
    ai.ai_socktype = SOCK_STREAM;

    if ((qemu_opt_get(opts, "host") == NULL) ||
        (qemu_opt_get(opts, "port") == NULL)) {
        fprintf(stderr, "%s: host and/or port not specified\n", __FUNCTION__);
        error_set(errp, QERR_SOCKET_CREATE_FAILED);
        return -1;
    }
    pstrcpy(port, sizeof(port), qemu_opt_get(opts, "port"));
    addr = qemu_opt_get(opts, "host");

    to = qemu_opt_get_number(opts, "to", 0);
    if (qemu_opt_get_bool(opts, "ipv4", 0))
        ai.ai_family = PF_INET;
    if (qemu_opt_get_bool(opts, "ipv6", 0))
        ai.ai_family = PF_INET6;

    /* lookup */
    if (port_offset)
        snprintf(port, sizeof(port), "%d", atoi(port) + port_offset);
    rc = getaddrinfo(strlen(addr) ? addr : NULL, port, &ai, &res);
    if (rc != 0) {
        fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
                gai_strerror(rc));
        error_set(errp, QERR_SOCKET_CREATE_FAILED);
        return -1;
    }

    /* create socket + bind */
    for (e = res; e != NULL; e = e->ai_next) {
        getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen,
		        uaddr,INET6_ADDRSTRLEN,uport,32,
		        NI_NUMERICHOST | NI_NUMERICSERV);
        slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol);
        if (slisten < 0) {
            fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__,
                    inet_strfamily(e->ai_family), strerror(errno));
            if (!e->ai_next) {
                error_set(errp, QERR_SOCKET_CREATE_FAILED);
            }
            continue;
        }

        setsockopt(slisten,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on));
#ifdef IPV6_V6ONLY
        if (e->ai_family == PF_INET6) {
            /* listen on both ipv4 and ipv6 */
            setsockopt(slisten,IPPROTO_IPV6,IPV6_V6ONLY,(void*)&off,
                sizeof(off));
        }
#endif

        port_min = inet_getport(e);
        port_max = to ? to + port_offset : port_min;
        for (p = port_min; p <= port_max; p++) {
            inet_setport(e, p);
            if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) {
                goto listen;
            }
            if (p == port_max) {
                fprintf(stderr,"%s: bind(%s,%s,%d): %s\n", __FUNCTION__,
                        inet_strfamily(e->ai_family), uaddr, inet_getport(e),
                        strerror(errno));
                if (!e->ai_next) {
                    error_set(errp, QERR_SOCKET_BIND_FAILED);
                }
            }
        }
        closesocket(slisten);
    }
    fprintf(stderr, "%s: FAILED\n", __FUNCTION__);
    freeaddrinfo(res);
    return -1;

listen:
    if (listen(slisten,1) != 0) {
        error_set(errp, QERR_SOCKET_LISTEN_FAILED);
        perror("listen");
        closesocket(slisten);
        freeaddrinfo(res);
        return -1;
    }
    snprintf(uport, sizeof(uport), "%d", inet_getport(e) - port_offset);
    qemu_opt_set(opts, "host", uaddr);
    qemu_opt_set(opts, "port", uport);
    qemu_opt_set(opts, "ipv6", (e->ai_family == PF_INET6) ? "on" : "off");
    qemu_opt_set(opts, "ipv4", (e->ai_family != PF_INET6) ? "on" : "off");
    freeaddrinfo(res);
    return slisten;
}

int inet_connect_opts(QemuOpts *opts, Error **errp)
{
    struct addrinfo ai,*res,*e;
    const char *addr;
    const char *port;
    char uaddr[INET6_ADDRSTRLEN+1];
    char uport[33];
    int sock,rc;
    bool block;

    memset(&ai,0, sizeof(ai));
    ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG;
    ai.ai_family = PF_UNSPEC;
    ai.ai_socktype = SOCK_STREAM;

    addr = qemu_opt_get(opts, "host");
    port = qemu_opt_get(opts, "port");
    block = qemu_opt_get_bool(opts, "block", 0);
    if (addr == NULL || port == NULL) {
        fprintf(stderr, "inet_connect: host and/or port not specified\n");
        error_set(errp, QERR_SOCKET_CREATE_FAILED);
        return -1;
    }

    if (qemu_opt_get_bool(opts, "ipv4", 0))
        ai.ai_family = PF_INET;
    if (qemu_opt_get_bool(opts, "ipv6", 0))
        ai.ai_family = PF_INET6;

    /* lookup */
    if (0 != (rc = getaddrinfo(addr, port, &ai, &res))) {
        fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
                gai_strerror(rc));
        error_set(errp, QERR_SOCKET_CREATE_FAILED);
	return -1;
    }

    for (e = res; e != NULL; e = e->ai_next) {
        if (getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen,
                            uaddr,INET6_ADDRSTRLEN,uport,32,
                            NI_NUMERICHOST | NI_NUMERICSERV) != 0) {
            fprintf(stderr,"%s: getnameinfo: oops\n", __FUNCTION__);
            continue;
        }
        sock = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol);
        if (sock < 0) {
            fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__,
            inet_strfamily(e->ai_family), strerror(errno));
            continue;
        }
        setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on));
        if (!block) {
            socket_set_nonblock(sock);
        }
        /* connect to peer */
        do {
            rc = 0;
            if (connect(sock, e->ai_addr, e->ai_addrlen) < 0) {
                rc = -socket_error();
            }
        } while (rc == -EINTR);

  #ifdef _WIN32
        if (!block && (rc == -EINPROGRESS || rc == -EWOULDBLOCK
                       || rc == -WSAEALREADY)) {
  #else
        if (!block && (rc == -EINPROGRESS)) {
  #endif
            error_set(errp, QERR_SOCKET_CONNECT_IN_PROGRESS);
        } else if (rc < 0) {
            if (NULL == e->ai_next)
                fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__,
                        inet_strfamily(e->ai_family),
                        e->ai_canonname, uaddr, uport, strerror(errno));
            closesocket(sock);
            sock = -1;
            continue;
        }
        freeaddrinfo(res);
        return sock;
    }
    error_set(errp, QERR_SOCKET_CONNECT_FAILED);
    freeaddrinfo(res);
    return -1;
}

int inet_dgram_opts(QemuOpts *opts)
{
    struct addrinfo ai, *peer = NULL, *local = NULL;
    const char *addr;
    const char *port;
    char uaddr[INET6_ADDRSTRLEN+1];
    char uport[33];
    int sock = -1, rc;

    /* lookup peer addr */
    memset(&ai,0, sizeof(ai));
    ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG;
    ai.ai_family = PF_UNSPEC;
    ai.ai_socktype = SOCK_DGRAM;

    addr = qemu_opt_get(opts, "host");
    port = qemu_opt_get(opts, "port");
    if (addr == NULL || strlen(addr) == 0) {
        addr = "localhost";
    }
    if (port == NULL || strlen(port) == 0) {
        fprintf(stderr, "inet_dgram: port not specified\n");
        return -1;
    }

    if (qemu_opt_get_bool(opts, "ipv4", 0))
        ai.ai_family = PF_INET;
    if (qemu_opt_get_bool(opts, "ipv6", 0))
        ai.ai_family = PF_INET6;

    if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) {
        fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
                gai_strerror(rc));
	return -1;
    }

    /* lookup local addr */
    memset(&ai,0, sizeof(ai));
    ai.ai_flags = AI_PASSIVE;
    ai.ai_family = peer->ai_family;
    ai.ai_socktype = SOCK_DGRAM;

    addr = qemu_opt_get(opts, "localaddr");
    port = qemu_opt_get(opts, "localport");
    if (addr == NULL || strlen(addr) == 0) {
        addr = NULL;
    }
    if (!port || strlen(port) == 0)
        port = "0";

    if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) {
        fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
                gai_strerror(rc));
        return -1;
    }

    /* create socket */
    sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol);
    if (sock < 0) {
        fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__,
                inet_strfamily(peer->ai_family), strerror(errno));
        goto err;
    }
    setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on));

    /* bind socket */
    if (getnameinfo((struct sockaddr*)local->ai_addr,local->ai_addrlen,
                    uaddr,INET6_ADDRSTRLEN,uport,32,
                    NI_NUMERICHOST | NI_NUMERICSERV) != 0) {
        fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__);
        goto err;
    }
    if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) {
        fprintf(stderr,"%s: bind(%s,%s,%d): OK\n", __FUNCTION__,
                inet_strfamily(local->ai_family), uaddr, inet_getport(local));
        goto err;
    }

    /* connect to peer */
    if (getnameinfo((struct sockaddr*)peer->ai_addr, peer->ai_addrlen,
                    uaddr, INET6_ADDRSTRLEN, uport, 32,
                    NI_NUMERICHOST | NI_NUMERICSERV) != 0) {
        fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__);
        goto err;
    }
    if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) {
        fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__,
                inet_strfamily(peer->ai_family),
                peer->ai_canonname, uaddr, uport, strerror(errno));
        goto err;
    }

    freeaddrinfo(local);
    freeaddrinfo(peer);
    return sock;

err:
    if (-1 != sock)
        closesocket(sock);
    if (local)
        freeaddrinfo(local);
    if (peer)
        freeaddrinfo(peer);
    return -1;
}

/* compatibility wrapper */
static int inet_parse(QemuOpts *opts, const char *str)
{
    const char *optstr, *h;
    char addr[64];
    char port[33];
    int pos;

    /* parse address */
    if (str[0] == ':') {
        /* no host given */
        addr[0] = '\0';
        if (1 != sscanf(str,":%32[^,]%n",port,&pos)) {
            fprintf(stderr, "%s: portonly parse error (%s)\n",
                    __FUNCTION__, str);
            return -1;
        }
    } else if (str[0] == '[') {
        /* IPv6 addr */
        if (2 != sscanf(str,"[%64[^]]]:%32[^,]%n",addr,port,&pos)) {
            fprintf(stderr, "%s: ipv6 parse error (%s)\n",
                    __FUNCTION__, str);
            return -1;
        }
        qemu_opt_set(opts, "ipv6", "on");
    } else if (qemu_isdigit(str[0])) {
        /* IPv4 addr */
        if (2 != sscanf(str,"%64[0-9.]:%32[^,]%n",addr,port,&pos)) {
            fprintf(stderr, "%s: ipv4 parse error (%s)\n",
                    __FUNCTION__, str);
            return -1;
        }
        qemu_opt_set(opts, "ipv4", "on");
    } else {
        /* hostname */
        if (2 != sscanf(str,"%64[^:]:%32[^,]%n",addr,port,&pos)) {
            fprintf(stderr, "%s: hostname parse error (%s)\n",
                    __FUNCTION__, str);
            return -1;
        }
    }
    qemu_opt_set(opts, "host", addr);
    qemu_opt_set(opts, "port", port);

    /* parse options */
    optstr = str + pos;
    h = strstr(optstr, ",to=");
    if (h)
        qemu_opt_set(opts, "to", h+4);
    if (strstr(optstr, ",ipv4"))
        qemu_opt_set(opts, "ipv4", "on");
    if (strstr(optstr, ",ipv6"))
        qemu_opt_set(opts, "ipv6", "on");
    return 0;
}

int inet_listen(const char *str, char *ostr, int olen,
                int socktype, int port_offset, Error **errp)
{
    QemuOpts *opts;
    char *optstr;
    int sock = -1;

    opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
    if (inet_parse(opts, str) == 0) {
        sock = inet_listen_opts(opts, port_offset, errp);
        if (sock != -1 && ostr) {
            optstr = strchr(str, ',');
            if (qemu_opt_get_bool(opts, "ipv6", 0)) {
                snprintf(ostr, olen, "[%s]:%s%s",
                         qemu_opt_get(opts, "host"),
                         qemu_opt_get(opts, "port"),
                         optstr ? optstr : "");
            } else {
                snprintf(ostr, olen, "%s:%s%s",
                         qemu_opt_get(opts, "host"),
                         qemu_opt_get(opts, "port"),
                         optstr ? optstr : "");
            }
        }
    } else {
        error_set(errp, QERR_SOCKET_CREATE_FAILED);
    }
    qemu_opts_del(opts);
    return sock;
}

int inet_connect(const char *str, bool block, Error **errp)
{
    QemuOpts *opts;
    int sock = -1;

    opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
    if (inet_parse(opts, str) == 0) {
        if (block) {
            qemu_opt_set(opts, "block", "on");
        }
        sock = inet_connect_opts(opts, errp);
    } else {
        error_set(errp, QERR_SOCKET_CREATE_FAILED);
    }
    qemu_opts_del(opts);
    return sock;
}

#ifndef _WIN32

int unix_listen_opts(QemuOpts *opts)
{
    struct sockaddr_un un;
    const char *path = qemu_opt_get(opts, "path");
    int sock, fd;

    sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0);
    if (sock < 0) {
        perror("socket(unix)");
        return -1;
    }

    memset(&un, 0, sizeof(un));
    un.sun_family = AF_UNIX;
    if (path && strlen(path)) {
        snprintf(un.sun_path, sizeof(un.sun_path), "%s", path);
    } else {
        char *tmpdir = getenv("TMPDIR");
        snprintf(un.sun_path, sizeof(un.sun_path), "%s/qemu-socket-XXXXXX",
                 tmpdir ? tmpdir : "/tmp");
        /*
         * This dummy fd usage silences the mktemp() unsecure warning.
         * Using mkstemp() doesn't make things more secure here
         * though.  bind() complains about existing files, so we have
         * to unlink first and thus re-open the race window.  The
         * worst case possible is bind() failing, i.e. a DoS attack.
         */
        fd = mkstemp(un.sun_path); close(fd);
        qemu_opt_set(opts, "path", un.sun_path);
    }

    unlink(un.sun_path);
    if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) {
        fprintf(stderr, "bind(unix:%s): %s\n", un.sun_path, strerror(errno));
        goto err;
    }
    if (listen(sock, 1) < 0) {
        fprintf(stderr, "listen(unix:%s): %s\n", un.sun_path, strerror(errno));
        goto err;
    }

    return sock;

err:
    closesocket(sock);
    return -1;
}

int unix_connect_opts(QemuOpts *opts)
{
    struct sockaddr_un un;
    const char *path = qemu_opt_get(opts, "path");
    int sock;

    if (NULL == path) {
        fprintf(stderr, "unix connect: no path specified\n");
        return -1;
    }

    sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0);
    if (sock < 0) {
        perror("socket(unix)");
        return -1;
    }

    memset(&un, 0, sizeof(un));
    un.sun_family = AF_UNIX;
    snprintf(un.sun_path, sizeof(un.sun_path), "%s", path);
    if (connect(sock, (struct sockaddr*) &un, sizeof(un)) < 0) {
        fprintf(stderr, "connect(unix:%s): %s\n", path, strerror(errno));
        close(sock);
	return -1;
    }

    return sock;
}

/* compatibility wrapper */
int unix_listen(const char *str, char *ostr, int olen)
{
    QemuOpts *opts;
    char *path, *optstr;
    int sock, len;

    opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);

    optstr = strchr(str, ',');
    if (optstr) {
        len = optstr - str;
        if (len) {
            path = g_malloc(len+1);
            snprintf(path, len+1, "%.*s", len, str);
            qemu_opt_set(opts, "path", path);
            g_free(path);
        }
    } else {
        qemu_opt_set(opts, "path", str);
    }

    sock = unix_listen_opts(opts);

    if (sock != -1 && ostr)
        snprintf(ostr, olen, "%s%s", qemu_opt_get(opts, "path"), optstr ? optstr : "");
    qemu_opts_del(opts);
    return sock;
}

int unix_connect(const char *path)
{
    QemuOpts *opts;
    int sock;

    opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
    qemu_opt_set(opts, "path", path);
    sock = unix_connect_opts(opts);
    qemu_opts_del(opts);
    return sock;
}

#else

int unix_listen_opts(QemuOpts *opts)
{
    fprintf(stderr, "unix sockets are not available on windows\n");
    errno = ENOTSUP;
    return -1;
}

int unix_connect_opts(QemuOpts *opts)
{
    fprintf(stderr, "unix sockets are not available on windows\n");
    errno = ENOTSUP;
    return -1;
}

int unix_listen(const char *path, char *ostr, int olen)
{
    fprintf(stderr, "unix sockets are not available on windows\n");
    errno = ENOTSUP;
    return -1;
}

int unix_connect(const char *path)
{
    fprintf(stderr, "unix sockets are not available on windows\n");
    errno = ENOTSUP;
    return -1;
}

#endif

#ifdef _WIN32
static void socket_cleanup(void)
{
    WSACleanup();
}
#endif

int socket_init(void)
{
#ifdef _WIN32
    WSADATA Data;
    int ret, err;

    ret = WSAStartup(MAKEWORD(2,2), &Data);
    if (ret != 0) {
        err = WSAGetLastError();
        fprintf(stderr, "WSAStartup: %d\n", err);
        return -1;
    }
    atexit(socket_cleanup);
#endif
    return 0;
}
Commit	Line	Data
305b0eb2 AL	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.
e6d91ab6 PB	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.
305b0eb2	17	*/
d247d25f AL	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"
47398b9c	26	#include "qemu-common.h" /* for qemu_isdigit */
d247d25f AL	27
	28	#ifndef AI_ADDRCONFIG
	29	# define AI_ADDRCONFIG 0
	30	#endif
	31
d247d25f AL	32	static const int on=1, off=0;
d247d25f AL	33
2af2bf67	34	/* used temporarely until all users are converted to QemuOpts */
c1390903	35	static QemuOptsList dummy_opts = {
2af2bf67	36	.name = "dummy",
72cf2d4f	37	.head = QTAILQ_HEAD_INITIALIZER(dummy_opts.head),
2af2bf67 GH	38	.desc = {
	39	{
	40	.name = "path",
	41	.type = QEMU_OPT_STRING,
f4c94c7c GH	42	},{
	43	.name = "host",
	44	.type = QEMU_OPT_STRING,
	45	},{
	46	.name = "port",
	47	.type = QEMU_OPT_STRING,
	48	},{
	49	.name = "to",
	50	.type = QEMU_OPT_NUMBER,
	51	},{
	52	.name = "ipv4",
	53	.type = QEMU_OPT_BOOL,
	54	},{
	55	.name = "ipv6",
	56	.type = QEMU_OPT_BOOL,
a6ba35b3 AK	57	},{
	58	.name = "block",
	59	.type = QEMU_OPT_BOOL,
2af2bf67 GH	60	},
	61	{ /* end if list */ }
	62	},
	63	};
	64
d247d25f AL	65	static int inet_getport(struct addrinfo *e)
	66	{
	67	struct sockaddr_in *i4;
	68	struct sockaddr_in6 *i6;
	69
	70	switch (e->ai_family) {
	71	case PF_INET6:
	72	i6 = (void*)e->ai_addr;
	73	return ntohs(i6->sin6_port);
	74	case PF_INET:
	75	i4 = (void*)e->ai_addr;
	76	return ntohs(i4->sin_port);
	77	default:
	78	return 0;
	79	}
	80	}
	81
	82	static void inet_setport(struct addrinfo *e, int port)
	83	{
	84	struct sockaddr_in *i4;
	85	struct sockaddr_in6 *i6;
	86
	87	switch (e->ai_family) {
	88	case PF_INET6:
	89	i6 = (void*)e->ai_addr;
	90	i6->sin6_port = htons(port);
	91	break;
	92	case PF_INET:
	93	i4 = (void*)e->ai_addr;
	94	i4->sin_port = htons(port);
	95	break;
	96	}
	97	}
	98
c9c4b34e	99	const char *inet_strfamily(int family)
d247d25f AL	100	{
	101	switch (family) {
	102	case PF_INET6: return "ipv6";
	103	case PF_INET: return "ipv4";
	104	case PF_UNIX: return "unix";
	105	}
c445321e	106	return "unknown";
d247d25f AL	107	}
d247d25f AL	108
029409e5	109	int inet_listen_opts(QemuOpts opts, int port_offset, Error *errp)
d247d25f AL	110	{
d247d25f AL	111	struct addrinfo ai,res,e;
e5bc776f	112	const char *addr;
d247d25f AL	113	char port[33];
	114	char uaddr[INET6_ADDRSTRLEN+1];
	115	char uport[33];
877691f9	116	int slisten, rc, to, port_min, port_max, p;
d247d25f AL	117
	118	memset(&ai,0, sizeof(ai));
	119	ai.ai_flags = AI_PASSIVE \| AI_ADDRCONFIG;
	120	ai.ai_family = PF_UNSPEC;
e5bc776f	121	ai.ai_socktype = SOCK_STREAM;
d247d25f	122
e23a22e6 JO	123	if ((qemu_opt_get(opts, "host") == NULL) \|\|
e23a22e6 JO	124	(qemu_opt_get(opts, "port") == NULL)) {
e5bc776f	125	fprintf(stderr, "%s: host and/or port not specified\n", __FUNCTION__);
029409e5	126	error_set(errp, QERR_SOCKET_CREATE_FAILED);
e5bc776f	127	return -1;
d247d25f	128	}
e5bc776f GH	129	pstrcpy(port, sizeof(port), qemu_opt_get(opts, "port"));
e5bc776f GH	130	addr = qemu_opt_get(opts, "host");
d247d25f	131
e5bc776f GH	132	to = qemu_opt_get_number(opts, "to", 0);
e5bc776f GH	133	if (qemu_opt_get_bool(opts, "ipv4", 0))
d247d25f	134	ai.ai_family = PF_INET;
e5bc776f	135	if (qemu_opt_get_bool(opts, "ipv6", 0))
d247d25f AL	136	ai.ai_family = PF_INET6;
	137
	138	/* lookup */
	139	if (port_offset)
	140	snprintf(port, sizeof(port), "%d", atoi(port) + port_offset);
	141	rc = getaddrinfo(strlen(addr) ? addr : NULL, port, &ai, &res);
	142	if (rc != 0) {
e5bc776f GH	143	fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
e5bc776f GH	144	gai_strerror(rc));
029409e5	145	error_set(errp, QERR_SOCKET_CREATE_FAILED);
d247d25f AL	146	return -1;
d247d25f AL	147	}
d247d25f AL	148
	149	/* create socket + bind */
	150	for (e = res; e != NULL; e = e->ai_next) {
39b6efc8	151	getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen,
	152	uaddr,INET6_ADDRSTRLEN,uport,32,
	153	NI_NUMERICHOST \| NI_NUMERICSERV);
40ff6d7e	154	slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol);
39b6efc8	155	if (slisten < 0) {
d247d25f AL	156	fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__,
d247d25f AL	157	inet_strfamily(e->ai_family), strerror(errno));
029409e5 AK	158	if (!e->ai_next) {
	159	error_set(errp, QERR_SOCKET_CREATE_FAILED);
	160	}
39b6efc8	161	continue;
39b6efc8	162	}
d247d25f AL	163
	164	setsockopt(slisten,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on));
	165	#ifdef IPV6_V6ONLY
	166	if (e->ai_family == PF_INET6) {
	167	/* listen on both ipv4 and ipv6 */
39b6efc8	168	setsockopt(slisten,IPPROTO_IPV6,IPV6_V6ONLY,(void*)&off,
39b6efc8	169	sizeof(off));
d247d25f AL	170	}
	171	#endif
	172
877691f9 MA	173	port_min = inet_getport(e);
	174	port_max = to ? to + port_offset : port_min;
	175	for (p = port_min; p <= port_max; p++) {
	176	inet_setport(e, p);
d247d25f	177	if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) {
d247d25f AL	178	goto listen;
d247d25f AL	179	}
877691f9	180	if (p == port_max) {
d247d25f AL	181	fprintf(stderr,"%s: bind(%s,%s,%d): %s\n", __FUNCTION__,
	182	inet_strfamily(e->ai_family), uaddr, inet_getport(e),
	183	strerror(errno));
029409e5 AK	184	if (!e->ai_next) {
	185	error_set(errp, QERR_SOCKET_BIND_FAILED);
	186	}
d247d25f	187	}
d247d25f AL	188	}
	189	closesocket(slisten);
	190	}
	191	fprintf(stderr, "%s: FAILED\n", __FUNCTION__);
	192	freeaddrinfo(res);
	193	return -1;
	194
	195	listen:
	196	if (listen(slisten,1) != 0) {
029409e5	197	error_set(errp, QERR_SOCKET_LISTEN_FAILED);
d247d25f AL	198	perror("listen");
d247d25f AL	199	closesocket(slisten);
39b6efc8	200	freeaddrinfo(res);
d247d25f AL	201	return -1;
d247d25f AL	202	}
e5bc776f GH	203	snprintf(uport, sizeof(uport), "%d", inet_getport(e) - port_offset);
	204	qemu_opt_set(opts, "host", uaddr);
	205	qemu_opt_set(opts, "port", uport);
	206	qemu_opt_set(opts, "ipv6", (e->ai_family == PF_INET6) ? "on" : "off");
	207	qemu_opt_set(opts, "ipv4", (e->ai_family != PF_INET6) ? "on" : "off");
d247d25f AL	208	freeaddrinfo(res);
	209	return slisten;
	210	}
	211
a6ba35b3	212	int inet_connect_opts(QemuOpts opts, Error *errp)
d247d25f AL	213	{
d247d25f AL	214	struct addrinfo ai,res,e;
f4c94c7c GH	215	const char *addr;
f4c94c7c GH	216	const char *port;
d247d25f AL	217	char uaddr[INET6_ADDRSTRLEN+1];
	218	char uport[33];
	219	int sock,rc;
a6ba35b3	220	bool block;
d247d25f AL	221
	222	memset(&ai,0, sizeof(ai));
	223	ai.ai_flags = AI_CANONNAME \| AI_ADDRCONFIG;
	224	ai.ai_family = PF_UNSPEC;
f4c94c7c	225	ai.ai_socktype = SOCK_STREAM;
d247d25f	226
f4c94c7c GH	227	addr = qemu_opt_get(opts, "host");
f4c94c7c GH	228	port = qemu_opt_get(opts, "port");
a6ba35b3	229	block = qemu_opt_get_bool(opts, "block", 0);
f4c94c7c GH	230	if (addr == NULL \|\| port == NULL) {
f4c94c7c GH	231	fprintf(stderr, "inet_connect: host and/or port not specified\n");
a6ba35b3	232	error_set(errp, QERR_SOCKET_CREATE_FAILED);
f4c94c7c	233	return -1;
d247d25f AL	234	}
d247d25f AL	235
f4c94c7c	236	if (qemu_opt_get_bool(opts, "ipv4", 0))
d247d25f	237	ai.ai_family = PF_INET;
f4c94c7c	238	if (qemu_opt_get_bool(opts, "ipv6", 0))
d247d25f AL	239	ai.ai_family = PF_INET6;
	240
	241	/* lookup */
	242	if (0 != (rc = getaddrinfo(addr, port, &ai, &res))) {
f4c94c7c GH	243	fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
f4c94c7c GH	244	gai_strerror(rc));
a6ba35b3	245	error_set(errp, QERR_SOCKET_CREATE_FAILED);
d247d25f AL	246	return -1;
d247d25f AL	247	}
d247d25f AL	248
d247d25f AL	249	for (e = res; e != NULL; e = e->ai_next) {
39b6efc8	250	if (getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen,
	251	uaddr,INET6_ADDRSTRLEN,uport,32,
	252	NI_NUMERICHOST \| NI_NUMERICSERV) != 0) {
d247d25f	253	fprintf(stderr,"%s: getnameinfo: oops\n", __FUNCTION__);
39b6efc8	254	continue;
39b6efc8	255	}
40ff6d7e	256	sock = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol);
39b6efc8	257	if (sock < 0) {
d247d25f	258	fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__,
39b6efc8	259	inet_strfamily(e->ai_family), strerror(errno));
	260	continue;
	261	}
d247d25f	262	setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on));
a6ba35b3 AK	263	if (!block) {
	264	socket_set_nonblock(sock);
	265	}
39b6efc8	266	/* connect to peer */
a6ba35b3 AK	267	do {
	268	rc = 0;
	269	if (connect(sock, e->ai_addr, e->ai_addrlen) < 0) {
	270	rc = -socket_error();
	271	}
	272	} while (rc == -EINTR);
	273
	274	#ifdef _WIN32
	275	if (!block && (rc == -EINPROGRESS \|\| rc == -EWOULDBLOCK
	276	\|\| rc == -WSAEALREADY)) {
	277	#else
	278	if (!block && (rc == -EINPROGRESS)) {
	279	#endif
	280	error_set(errp, QERR_SOCKET_CONNECT_IN_PROGRESS);
	281	} else if (rc < 0) {
136faa36	282	if (NULL == e->ai_next)
d247d25f AL	283	fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__,
	284	inet_strfamily(e->ai_family),
	285	e->ai_canonname, uaddr, uport, strerror(errno));
	286	closesocket(sock);
a6ba35b3	287	sock = -1;
39b6efc8	288	continue;
39b6efc8	289	}
d247d25f	290	freeaddrinfo(res);
39b6efc8	291	return sock;
d247d25f	292	}
a6ba35b3	293	error_set(errp, QERR_SOCKET_CONNECT_FAILED);
d247d25f AL	294	freeaddrinfo(res);
	295	return -1;
	296	}
	297
7e1b35b4 GH	298	int inet_dgram_opts(QemuOpts *opts)
	299	{
	300	struct addrinfo ai, peer = NULL, local = NULL;
	301	const char *addr;
	302	const char *port;
	303	char uaddr[INET6_ADDRSTRLEN+1];
	304	char uport[33];
	305	int sock = -1, rc;
	306
	307	/* lookup peer addr */
	308	memset(&ai,0, sizeof(ai));
	309	ai.ai_flags = AI_CANONNAME \| AI_ADDRCONFIG;
	310	ai.ai_family = PF_UNSPEC;
	311	ai.ai_socktype = SOCK_DGRAM;
	312
	313	addr = qemu_opt_get(opts, "host");
	314	port = qemu_opt_get(opts, "port");
	315	if (addr == NULL \|\| strlen(addr) == 0) {
	316	addr = "localhost";
	317	}
	318	if (port == NULL \|\| strlen(port) == 0) {
	319	fprintf(stderr, "inet_dgram: port not specified\n");
	320	return -1;
	321	}
	322
	323	if (qemu_opt_get_bool(opts, "ipv4", 0))
	324	ai.ai_family = PF_INET;
	325	if (qemu_opt_get_bool(opts, "ipv6", 0))
	326	ai.ai_family = PF_INET6;
	327
	328	if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) {
	329	fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
	330	gai_strerror(rc));
	331	return -1;
	332	}
7e1b35b4 GH	333
	334	/* lookup local addr */
	335	memset(&ai,0, sizeof(ai));
	336	ai.ai_flags = AI_PASSIVE;
	337	ai.ai_family = peer->ai_family;
	338	ai.ai_socktype = SOCK_DGRAM;
	339
	340	addr = qemu_opt_get(opts, "localaddr");
	341	port = qemu_opt_get(opts, "localport");
	342	if (addr == NULL \|\| strlen(addr) == 0) {
	343	addr = NULL;
	344	}
	345	if (!port \|\| strlen(port) == 0)
	346	port = "0";
	347
	348	if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) {
	349	fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
	350	gai_strerror(rc));
	351	return -1;
	352	}
7e1b35b4 GH	353
7e1b35b4 GH	354	/* create socket */
40ff6d7e	355	sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol);
7e1b35b4 GH	356	if (sock < 0) {
	357	fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__,
	358	inet_strfamily(peer->ai_family), strerror(errno));
	359	goto err;
	360	}
	361	setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on));
	362
	363	/* bind socket */
	364	if (getnameinfo((struct sockaddr*)local->ai_addr,local->ai_addrlen,
	365	uaddr,INET6_ADDRSTRLEN,uport,32,
	366	NI_NUMERICHOST \| NI_NUMERICSERV) != 0) {
	367	fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__);
	368	goto err;
	369	}
	370	if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) {
	371	fprintf(stderr,"%s: bind(%s,%s,%d): OK\n", __FUNCTION__,
	372	inet_strfamily(local->ai_family), uaddr, inet_getport(local));
	373	goto err;
	374	}
	375
	376	/* connect to peer */
	377	if (getnameinfo((struct sockaddr*)peer->ai_addr, peer->ai_addrlen,
	378	uaddr, INET6_ADDRSTRLEN, uport, 32,
	379	NI_NUMERICHOST \| NI_NUMERICSERV) != 0) {
	380	fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__);
	381	goto err;
	382	}
	383	if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) {
	384	fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__,
	385	inet_strfamily(peer->ai_family),
	386	peer->ai_canonname, uaddr, uport, strerror(errno));
	387	goto err;
	388	}
	389
	390	freeaddrinfo(local);
	391	freeaddrinfo(peer);
	392	return sock;
	393
	394	err:
	395	if (-1 != sock)
	396	closesocket(sock);
	397	if (local)
	398	freeaddrinfo(local);
	399	if (peer)
	400	freeaddrinfo(peer);
	401	return -1;
	402	}
	403
f4c94c7c GH	404	/* compatibility wrapper */
	405	static int inet_parse(QemuOpts opts, const char str)
	406	{
	407	const char optstr, h;
	408	char addr[64];
	409	char port[33];
	410	int pos;
	411
	412	/* parse address */
	413	if (str[0] == ':') {
	414	/* no host given */
	415	addr[0] = '\0';
	416	if (1 != sscanf(str,":%32[^,]%n",port,&pos)) {
	417	fprintf(stderr, "%s: portonly parse error (%s)\n",
	418	__FUNCTION__, str);
	419	return -1;
	420	}
	421	} else if (str[0] == '[') {
	422	/* IPv6 addr */
	423	if (2 != sscanf(str,"[%64[^]]]:%32[^,]%n",addr,port,&pos)) {
	424	fprintf(stderr, "%s: ipv6 parse error (%s)\n",
	425	__FUNCTION__, str);
	426	return -1;
	427	}
2198a62e	428	qemu_opt_set(opts, "ipv6", "on");
f4c94c7c GH	429	} else if (qemu_isdigit(str[0])) {
	430	/* IPv4 addr */
	431	if (2 != sscanf(str,"%64[0-9.]:%32[^,]%n",addr,port,&pos)) {
	432	fprintf(stderr, "%s: ipv4 parse error (%s)\n",
	433	__FUNCTION__, str);
	434	return -1;
	435	}
2198a62e	436	qemu_opt_set(opts, "ipv4", "on");
f4c94c7c GH	437	} else {
	438	/* hostname */
	439	if (2 != sscanf(str,"%64[^:]:%32[^,]%n",addr,port,&pos)) {
	440	fprintf(stderr, "%s: hostname parse error (%s)\n",
	441	__FUNCTION__, str);
	442	return -1;
	443	}
	444	}
	445	qemu_opt_set(opts, "host", addr);
	446	qemu_opt_set(opts, "port", port);
	447
	448	/* parse options */
	449	optstr = str + pos;
	450	h = strstr(optstr, ",to=");
	451	if (h)
	452	qemu_opt_set(opts, "to", h+4);
	453	if (strstr(optstr, ",ipv4"))
2198a62e	454	qemu_opt_set(opts, "ipv4", "on");
f4c94c7c	455	if (strstr(optstr, ",ipv6"))
2198a62e	456	qemu_opt_set(opts, "ipv6", "on");
f4c94c7c GH	457	return 0;
	458	}
	459
e5bc776f	460	int inet_listen(const char str, char ostr, int olen,
029409e5	461	int socktype, int port_offset, Error **errp)
e5bc776f GH	462	{
	463	QemuOpts *opts;
	464	char *optstr;
	465	int sock = -1;
	466
8be7e7e4	467	opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
e5bc776f	468	if (inet_parse(opts, str) == 0) {
029409e5	469	sock = inet_listen_opts(opts, port_offset, errp);
e5bc776f GH	470	if (sock != -1 && ostr) {
	471	optstr = strchr(str, ',');
	472	if (qemu_opt_get_bool(opts, "ipv6", 0)) {
	473	snprintf(ostr, olen, "[%s]:%s%s",
	474	qemu_opt_get(opts, "host"),
	475	qemu_opt_get(opts, "port"),
	476	optstr ? optstr : "");
	477	} else {
	478	snprintf(ostr, olen, "%s:%s%s",
	479	qemu_opt_get(opts, "host"),
	480	qemu_opt_get(opts, "port"),
	481	optstr ? optstr : "");
	482	}
	483	}
029409e5 AK	484	} else {
029409e5 AK	485	error_set(errp, QERR_SOCKET_CREATE_FAILED);
e5bc776f GH	486	}
	487	qemu_opts_del(opts);
	488	return sock;
	489	}
	490
a6ba35b3	491	int inet_connect(const char str, bool block, Error *errp)
f4c94c7c GH	492	{
	493	QemuOpts *opts;
	494	int sock = -1;
	495
8be7e7e4	496	opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
a6ba35b3 AK	497	if (inet_parse(opts, str) == 0) {
	498	if (block) {
	499	qemu_opt_set(opts, "block", "on");
	500	}
	501	sock = inet_connect_opts(opts, errp);
	502	} else {
	503	error_set(errp, QERR_SOCKET_CREATE_FAILED);
	504	}
f4c94c7c GH	505	qemu_opts_del(opts);
	506	return sock;
	507	}
	508
d247d25f AL	509	#ifndef _WIN32
d247d25f AL	510
62b6adfb	511	int unix_listen_opts(QemuOpts *opts)
d247d25f AL	512	{
d247d25f AL	513	struct sockaddr_un un;
62b6adfb GH	514	const char *path = qemu_opt_get(opts, "path");
62b6adfb GH	515	int sock, fd;
d247d25f	516
40ff6d7e	517	sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0);
d247d25f	518	if (sock < 0) {
39b6efc8	519	perror("socket(unix)");
39b6efc8	520	return -1;
d247d25f AL	521	}
d247d25f AL	522
d247d25f AL	523	memset(&un, 0, sizeof(un));
	524	un.sun_family = AF_UNIX;
	525	if (path && strlen(path)) {
	526	snprintf(un.sun_path, sizeof(un.sun_path), "%s", path);
	527	} else {
	528	char *tmpdir = getenv("TMPDIR");
	529	snprintf(un.sun_path, sizeof(un.sun_path), "%s/qemu-socket-XXXXXX",
	530	tmpdir ? tmpdir : "/tmp");
	531	/*
	532	* This dummy fd usage silences the mktemp() unsecure warning.
	533	* Using mkstemp() doesn't make things more secure here
	534	* though. bind() complains about existing files, so we have
	535	* to unlink first and thus re-open the race window. The
	536	* worst case possible is bind() failing, i.e. a DoS attack.
	537	*/
	538	fd = mkstemp(un.sun_path); close(fd);
62b6adfb	539	qemu_opt_set(opts, "path", un.sun_path);
d247d25f	540	}
d247d25f AL	541
	542	unlink(un.sun_path);
	543	if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) {
	544	fprintf(stderr, "bind(unix:%s): %s\n", un.sun_path, strerror(errno));
	545	goto err;
	546	}
	547	if (listen(sock, 1) < 0) {
	548	fprintf(stderr, "listen(unix:%s): %s\n", un.sun_path, strerror(errno));
	549	goto err;
	550	}
	551
d247d25f AL	552	return sock;
	553
	554	err:
d247d25f AL	555	closesocket(sock);
	556	return -1;
	557	}
	558
2af2bf67	559	int unix_connect_opts(QemuOpts *opts)
d247d25f AL	560	{
d247d25f AL	561	struct sockaddr_un un;
2af2bf67	562	const char *path = qemu_opt_get(opts, "path");
d247d25f AL	563	int sock;
d247d25f AL	564
2af2bf67 GH	565	if (NULL == path) {
	566	fprintf(stderr, "unix connect: no path specified\n");
	567	return -1;
	568	}
	569
40ff6d7e	570	sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0);
d247d25f	571	if (sock < 0) {
39b6efc8	572	perror("socket(unix)");
39b6efc8	573	return -1;
d247d25f AL	574	}
	575
	576	memset(&un, 0, sizeof(un));
	577	un.sun_family = AF_UNIX;
	578	snprintf(un.sun_path, sizeof(un.sun_path), "%s", path);
	579	if (connect(sock, (struct sockaddr*) &un, sizeof(un)) < 0) {
	580	fprintf(stderr, "connect(unix:%s): %s\n", path, strerror(errno));
9d947472	581	close(sock);
d247d25f AL	582	return -1;
	583	}
	584
d247d25f AL	585	return sock;
	586	}
	587
2af2bf67	588	/* compatibility wrapper */
62b6adfb GH	589	int unix_listen(const char str, char ostr, int olen)
	590	{
	591	QemuOpts *opts;
	592	char path, optstr;
	593	int sock, len;
	594
8be7e7e4	595	opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
62b6adfb GH	596
	597	optstr = strchr(str, ',');
	598	if (optstr) {
	599	len = optstr - str;
	600	if (len) {
7267c094	601	path = g_malloc(len+1);
62b6adfb GH	602	snprintf(path, len+1, "%.*s", len, str);
62b6adfb GH	603	qemu_opt_set(opts, "path", path);
7267c094	604	g_free(path);
62b6adfb GH	605	}
	606	} else {
	607	qemu_opt_set(opts, "path", str);
	608	}
	609
	610	sock = unix_listen_opts(opts);
	611
	612	if (sock != -1 && ostr)
	613	snprintf(ostr, olen, "%s%s", qemu_opt_get(opts, "path"), optstr ? optstr : "");
	614	qemu_opts_del(opts);
	615	return sock;
	616	}
	617
2af2bf67 GH	618	int unix_connect(const char *path)
	619	{
	620	QemuOpts *opts;
	621	int sock;
	622
8be7e7e4	623	opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
2af2bf67 GH	624	qemu_opt_set(opts, "path", path);
	625	sock = unix_connect_opts(opts);
	626	qemu_opts_del(opts);
	627	return sock;
	628	}
	629
d247d25f AL	630	#else
d247d25f AL	631
108af7b9 GH	632	int unix_listen_opts(QemuOpts *opts)
	633	{
	634	fprintf(stderr, "unix sockets are not available on windows\n");
b82eac92	635	errno = ENOTSUP;
108af7b9 GH	636	return -1;
	637	}
	638
	639	int unix_connect_opts(QemuOpts *opts)
	640	{
	641	fprintf(stderr, "unix sockets are not available on windows\n");
b82eac92	642	errno = ENOTSUP;
108af7b9 GH	643	return -1;
	644	}
	645
d247d25f AL	646	int unix_listen(const char path, char ostr, int olen)
	647	{
	648	fprintf(stderr, "unix sockets are not available on windows\n");
b82eac92	649	errno = ENOTSUP;
d247d25f AL	650	return -1;
	651	}
	652
	653	int unix_connect(const char *path)
	654	{
	655	fprintf(stderr, "unix sockets are not available on windows\n");
b82eac92	656	errno = ENOTSUP;
d247d25f AL	657	return -1;
	658	}
	659
	660	#endif
0706a4dc PB	661
	662	#ifdef _WIN32
	663	static void socket_cleanup(void)
	664	{
	665	WSACleanup();
	666	}
	667	#endif
	668
	669	int socket_init(void)
	670	{
	671	#ifdef _WIN32
	672	WSADATA Data;
	673	int ret, err;
	674
	675	ret = WSAStartup(MAKEWORD(2,2), &Data);
	676	if (ret != 0) {
	677	err = WSAGetLastError();
	678	fprintf(stderr, "WSAStartup: %d\n", err);
	679	return -1;
	680	}
	681	atexit(socket_cleanup);
	682	#endif
	683	return 0;
	684	}