[mirror_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.
 */
#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)
{
    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__);
        return -1;
    }
    pstrcpy(port, sizeof(port), qemu_opt_get(opts, "port"));
    addr = qemu_opt_get(opts, "host");

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

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

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

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

        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));
            }
        }
        closesocket(slisten);
    }
    fprintf(stderr, "%s: FAILED\n", __FUNCTION__);
    freeaddrinfo(res);
    return -1;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    opts = qemu_opts_create(&dummy_opts, NULL, 0);
    if (inet_parse(opts, str) == 0) {
        sock = inet_listen_opts(opts, port_offset);
        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 : "");
            }
        }
    }
    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);
    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);

    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);
    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.
	14	*/
d247d25f AL	15	#include <stdio.h>
	16	#include <stdlib.h>
	17	#include <string.h>
	18	#include <ctype.h>
	19	#include <errno.h>
	20	#include <unistd.h>
	21
	22	#include "qemu_socket.h"
47398b9c	23	#include "qemu-common.h" /* for qemu_isdigit */
d247d25f AL	24
	25	#ifndef AI_ADDRCONFIG
	26	# define AI_ADDRCONFIG 0
	27	#endif
	28
d247d25f AL	29	static const int on=1, off=0;
d247d25f AL	30
2af2bf67	31	/* used temporarely until all users are converted to QemuOpts */
c1390903	32	static QemuOptsList dummy_opts = {
2af2bf67	33	.name = "dummy",
72cf2d4f	34	.head = QTAILQ_HEAD_INITIALIZER(dummy_opts.head),
2af2bf67 GH	35	.desc = {
	36	{
	37	.name = "path",
	38	.type = QEMU_OPT_STRING,
f4c94c7c GH	39	},{
	40	.name = "host",
	41	.type = QEMU_OPT_STRING,
	42	},{
	43	.name = "port",
	44	.type = QEMU_OPT_STRING,
	45	},{
	46	.name = "to",
	47	.type = QEMU_OPT_NUMBER,
	48	},{
	49	.name = "ipv4",
	50	.type = QEMU_OPT_BOOL,
	51	},{
	52	.name = "ipv6",
	53	.type = QEMU_OPT_BOOL,
a6ba35b3 AK	54	},{
	55	.name = "block",
	56	.type = QEMU_OPT_BOOL,
2af2bf67 GH	57	},
	58	{ /* end if list */ }
	59	},
	60	};
	61
d247d25f AL	62	static int inet_getport(struct addrinfo *e)
	63	{
	64	struct sockaddr_in *i4;
	65	struct sockaddr_in6 *i6;
	66
	67	switch (e->ai_family) {
	68	case PF_INET6:
	69	i6 = (void*)e->ai_addr;
	70	return ntohs(i6->sin6_port);
	71	case PF_INET:
	72	i4 = (void*)e->ai_addr;
	73	return ntohs(i4->sin_port);
	74	default:
	75	return 0;
	76	}
	77	}
	78
	79	static void inet_setport(struct addrinfo *e, int port)
	80	{
	81	struct sockaddr_in *i4;
	82	struct sockaddr_in6 *i6;
	83
	84	switch (e->ai_family) {
	85	case PF_INET6:
	86	i6 = (void*)e->ai_addr;
	87	i6->sin6_port = htons(port);
	88	break;
	89	case PF_INET:
	90	i4 = (void*)e->ai_addr;
	91	i4->sin_port = htons(port);
	92	break;
	93	}
	94	}
	95
c9c4b34e	96	const char *inet_strfamily(int family)
d247d25f AL	97	{
	98	switch (family) {
	99	case PF_INET6: return "ipv6";
	100	case PF_INET: return "ipv4";
	101	case PF_UNIX: return "unix";
	102	}
c445321e	103	return "unknown";
d247d25f AL	104	}
d247d25f AL	105
e5bc776f	106	int inet_listen_opts(QemuOpts *opts, int port_offset)
d247d25f AL	107	{
d247d25f AL	108	struct addrinfo ai,res,e;
e5bc776f	109	const char *addr;
d247d25f AL	110	char port[33];
	111	char uaddr[INET6_ADDRSTRLEN+1];
	112	char uport[33];
877691f9	113	int slisten, rc, to, port_min, port_max, p;
d247d25f AL	114
	115	memset(&ai,0, sizeof(ai));
	116	ai.ai_flags = AI_PASSIVE \| AI_ADDRCONFIG;
	117	ai.ai_family = PF_UNSPEC;
e5bc776f	118	ai.ai_socktype = SOCK_STREAM;
d247d25f	119
e23a22e6 JO	120	if ((qemu_opt_get(opts, "host") == NULL) \|\|
e23a22e6 JO	121	(qemu_opt_get(opts, "port") == NULL)) {
e5bc776f GH	122	fprintf(stderr, "%s: host and/or port not specified\n", __FUNCTION__);
e5bc776f GH	123	return -1;
d247d25f	124	}
e5bc776f GH	125	pstrcpy(port, sizeof(port), qemu_opt_get(opts, "port"));
e5bc776f GH	126	addr = qemu_opt_get(opts, "host");
d247d25f	127
e5bc776f GH	128	to = qemu_opt_get_number(opts, "to", 0);
e5bc776f GH	129	if (qemu_opt_get_bool(opts, "ipv4", 0))
d247d25f	130	ai.ai_family = PF_INET;
e5bc776f	131	if (qemu_opt_get_bool(opts, "ipv6", 0))
d247d25f AL	132	ai.ai_family = PF_INET6;
	133
	134	/* lookup */
	135	if (port_offset)
	136	snprintf(port, sizeof(port), "%d", atoi(port) + port_offset);
	137	rc = getaddrinfo(strlen(addr) ? addr : NULL, port, &ai, &res);
	138	if (rc != 0) {
e5bc776f GH	139	fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
e5bc776f GH	140	gai_strerror(rc));
d247d25f AL	141	return -1;
d247d25f AL	142	}
d247d25f AL	143
	144	/* create socket + bind */
	145	for (e = res; e != NULL; e = e->ai_next) {
39b6efc8 VS	146	getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen,
	147	uaddr,INET6_ADDRSTRLEN,uport,32,
	148	NI_NUMERICHOST \| NI_NUMERICSERV);
40ff6d7e	149	slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol);
39b6efc8	150	if (slisten < 0) {
d247d25f AL	151	fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__,
d247d25f AL	152	inet_strfamily(e->ai_family), strerror(errno));
39b6efc8 VS	153	continue;
39b6efc8 VS	154	}
d247d25f AL	155
	156	setsockopt(slisten,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on));
	157	#ifdef IPV6_V6ONLY
	158	if (e->ai_family == PF_INET6) {
	159	/* listen on both ipv4 and ipv6 */
39b6efc8 VS	160	setsockopt(slisten,IPPROTO_IPV6,IPV6_V6ONLY,(void*)&off,
39b6efc8 VS	161	sizeof(off));
d247d25f AL	162	}
	163	#endif
	164
877691f9 MA	165	port_min = inet_getport(e);
	166	port_max = to ? to + port_offset : port_min;
	167	for (p = port_min; p <= port_max; p++) {
	168	inet_setport(e, p);
d247d25f	169	if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) {
d247d25f AL	170	goto listen;
d247d25f AL	171	}
877691f9	172	if (p == port_max) {
d247d25f AL	173	fprintf(stderr,"%s: bind(%s,%s,%d): %s\n", __FUNCTION__,
	174	inet_strfamily(e->ai_family), uaddr, inet_getport(e),
	175	strerror(errno));
d247d25f	176	}
d247d25f AL	177	}
	178	closesocket(slisten);
	179	}
	180	fprintf(stderr, "%s: FAILED\n", __FUNCTION__);
	181	freeaddrinfo(res);
	182	return -1;
	183
	184	listen:
	185	if (listen(slisten,1) != 0) {
	186	perror("listen");
	187	closesocket(slisten);
39b6efc8	188	freeaddrinfo(res);
d247d25f AL	189	return -1;
d247d25f AL	190	}
e5bc776f GH	191	snprintf(uport, sizeof(uport), "%d", inet_getport(e) - port_offset);
	192	qemu_opt_set(opts, "host", uaddr);
	193	qemu_opt_set(opts, "port", uport);
	194	qemu_opt_set(opts, "ipv6", (e->ai_family == PF_INET6) ? "on" : "off");
	195	qemu_opt_set(opts, "ipv4", (e->ai_family != PF_INET6) ? "on" : "off");
d247d25f AL	196	freeaddrinfo(res);
	197	return slisten;
	198	}
	199
a6ba35b3	200	int inet_connect_opts(QemuOpts opts, Error *errp)
d247d25f AL	201	{
d247d25f AL	202	struct addrinfo ai,res,e;
f4c94c7c GH	203	const char *addr;
f4c94c7c GH	204	const char *port;
d247d25f AL	205	char uaddr[INET6_ADDRSTRLEN+1];
	206	char uport[33];
	207	int sock,rc;
a6ba35b3	208	bool block;
d247d25f AL	209
	210	memset(&ai,0, sizeof(ai));
	211	ai.ai_flags = AI_CANONNAME \| AI_ADDRCONFIG;
	212	ai.ai_family = PF_UNSPEC;
f4c94c7c	213	ai.ai_socktype = SOCK_STREAM;
d247d25f	214
f4c94c7c GH	215	addr = qemu_opt_get(opts, "host");
f4c94c7c GH	216	port = qemu_opt_get(opts, "port");
a6ba35b3	217	block = qemu_opt_get_bool(opts, "block", 0);
f4c94c7c GH	218	if (addr == NULL \|\| port == NULL) {
f4c94c7c GH	219	fprintf(stderr, "inet_connect: host and/or port not specified\n");
a6ba35b3	220	error_set(errp, QERR_SOCKET_CREATE_FAILED);
f4c94c7c	221	return -1;
d247d25f AL	222	}
d247d25f AL	223
f4c94c7c	224	if (qemu_opt_get_bool(opts, "ipv4", 0))
d247d25f	225	ai.ai_family = PF_INET;
f4c94c7c	226	if (qemu_opt_get_bool(opts, "ipv6", 0))
d247d25f AL	227	ai.ai_family = PF_INET6;
	228
	229	/* lookup */
	230	if (0 != (rc = getaddrinfo(addr, port, &ai, &res))) {
f4c94c7c GH	231	fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
f4c94c7c GH	232	gai_strerror(rc));
a6ba35b3	233	error_set(errp, QERR_SOCKET_CREATE_FAILED);
d247d25f AL	234	return -1;
d247d25f AL	235	}
d247d25f AL	236
d247d25f AL	237	for (e = res; e != NULL; e = e->ai_next) {
39b6efc8 VS	238	if (getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen,
	239	uaddr,INET6_ADDRSTRLEN,uport,32,
	240	NI_NUMERICHOST \| NI_NUMERICSERV) != 0) {
d247d25f	241	fprintf(stderr,"%s: getnameinfo: oops\n", __FUNCTION__);
39b6efc8 VS	242	continue;
39b6efc8 VS	243	}
40ff6d7e	244	sock = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol);
39b6efc8	245	if (sock < 0) {
d247d25f	246	fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__,
39b6efc8 VS	247	inet_strfamily(e->ai_family), strerror(errno));
	248	continue;
	249	}
d247d25f	250	setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on));
a6ba35b3 AK	251	if (!block) {
	252	socket_set_nonblock(sock);
	253	}
39b6efc8	254	/* connect to peer */
a6ba35b3 AK	255	do {
	256	rc = 0;
	257	if (connect(sock, e->ai_addr, e->ai_addrlen) < 0) {
	258	rc = -socket_error();
	259	}
	260	} while (rc == -EINTR);
	261
	262	#ifdef _WIN32
	263	if (!block && (rc == -EINPROGRESS \|\| rc == -EWOULDBLOCK
	264	\|\| rc == -WSAEALREADY)) {
	265	#else
	266	if (!block && (rc == -EINPROGRESS)) {
	267	#endif
	268	error_set(errp, QERR_SOCKET_CONNECT_IN_PROGRESS);
	269	} else if (rc < 0) {
136faa36	270	if (NULL == e->ai_next)
d247d25f AL	271	fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__,
	272	inet_strfamily(e->ai_family),
	273	e->ai_canonname, uaddr, uport, strerror(errno));
	274	closesocket(sock);
a6ba35b3	275	sock = -1;
39b6efc8 VS	276	continue;
39b6efc8 VS	277	}
d247d25f	278	freeaddrinfo(res);
39b6efc8	279	return sock;
d247d25f	280	}
a6ba35b3	281	error_set(errp, QERR_SOCKET_CONNECT_FAILED);
d247d25f AL	282	freeaddrinfo(res);
	283	return -1;
	284	}
	285
7e1b35b4 GH	286	int inet_dgram_opts(QemuOpts *opts)
	287	{
	288	struct addrinfo ai, peer = NULL, local = NULL;
	289	const char *addr;
	290	const char *port;
	291	char uaddr[INET6_ADDRSTRLEN+1];
	292	char uport[33];
	293	int sock = -1, rc;
	294
	295	/* lookup peer addr */
	296	memset(&ai,0, sizeof(ai));
	297	ai.ai_flags = AI_CANONNAME \| AI_ADDRCONFIG;
	298	ai.ai_family = PF_UNSPEC;
	299	ai.ai_socktype = SOCK_DGRAM;
	300
	301	addr = qemu_opt_get(opts, "host");
	302	port = qemu_opt_get(opts, "port");
	303	if (addr == NULL \|\| strlen(addr) == 0) {
	304	addr = "localhost";
	305	}
	306	if (port == NULL \|\| strlen(port) == 0) {
	307	fprintf(stderr, "inet_dgram: port not specified\n");
	308	return -1;
	309	}
	310
	311	if (qemu_opt_get_bool(opts, "ipv4", 0))
	312	ai.ai_family = PF_INET;
	313	if (qemu_opt_get_bool(opts, "ipv6", 0))
	314	ai.ai_family = PF_INET6;
	315
	316	if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) {
	317	fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
	318	gai_strerror(rc));
	319	return -1;
	320	}
7e1b35b4 GH	321
	322	/* lookup local addr */
	323	memset(&ai,0, sizeof(ai));
	324	ai.ai_flags = AI_PASSIVE;
	325	ai.ai_family = peer->ai_family;
	326	ai.ai_socktype = SOCK_DGRAM;
	327
	328	addr = qemu_opt_get(opts, "localaddr");
	329	port = qemu_opt_get(opts, "localport");
	330	if (addr == NULL \|\| strlen(addr) == 0) {
	331	addr = NULL;
	332	}
	333	if (!port \|\| strlen(port) == 0)
	334	port = "0";
	335
	336	if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) {
	337	fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
	338	gai_strerror(rc));
	339	return -1;
	340	}
7e1b35b4 GH	341
7e1b35b4 GH	342	/* create socket */
40ff6d7e	343	sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol);
7e1b35b4 GH	344	if (sock < 0) {
	345	fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__,
	346	inet_strfamily(peer->ai_family), strerror(errno));
	347	goto err;
	348	}
	349	setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on));
	350
	351	/* bind socket */
	352	if (getnameinfo((struct sockaddr*)local->ai_addr,local->ai_addrlen,
	353	uaddr,INET6_ADDRSTRLEN,uport,32,
	354	NI_NUMERICHOST \| NI_NUMERICSERV) != 0) {
	355	fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__);
	356	goto err;
	357	}
	358	if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) {
	359	fprintf(stderr,"%s: bind(%s,%s,%d): OK\n", __FUNCTION__,
	360	inet_strfamily(local->ai_family), uaddr, inet_getport(local));
	361	goto err;
	362	}
	363
	364	/* connect to peer */
	365	if (getnameinfo((struct sockaddr*)peer->ai_addr, peer->ai_addrlen,
	366	uaddr, INET6_ADDRSTRLEN, uport, 32,
	367	NI_NUMERICHOST \| NI_NUMERICSERV) != 0) {
	368	fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__);
	369	goto err;
	370	}
	371	if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) {
	372	fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__,
	373	inet_strfamily(peer->ai_family),
	374	peer->ai_canonname, uaddr, uport, strerror(errno));
	375	goto err;
	376	}
	377
	378	freeaddrinfo(local);
	379	freeaddrinfo(peer);
	380	return sock;
	381
	382	err:
	383	if (-1 != sock)
	384	closesocket(sock);
	385	if (local)
	386	freeaddrinfo(local);
	387	if (peer)
	388	freeaddrinfo(peer);
	389	return -1;
	390	}
	391
f4c94c7c GH	392	/* compatibility wrapper */
	393	static int inet_parse(QemuOpts opts, const char str)
	394	{
	395	const char optstr, h;
	396	char addr[64];
	397	char port[33];
	398	int pos;
	399
	400	/* parse address */
	401	if (str[0] == ':') {
	402	/* no host given */
	403	addr[0] = '\0';
	404	if (1 != sscanf(str,":%32[^,]%n",port,&pos)) {
	405	fprintf(stderr, "%s: portonly parse error (%s)\n",
	406	__FUNCTION__, str);
	407	return -1;
	408	}
	409	} else if (str[0] == '[') {
	410	/* IPv6 addr */
	411	if (2 != sscanf(str,"[%64[^]]]:%32[^,]%n",addr,port,&pos)) {
	412	fprintf(stderr, "%s: ipv6 parse error (%s)\n",
	413	__FUNCTION__, str);
	414	return -1;
	415	}
2198a62e	416	qemu_opt_set(opts, "ipv6", "on");
f4c94c7c GH	417	} else if (qemu_isdigit(str[0])) {
	418	/* IPv4 addr */
	419	if (2 != sscanf(str,"%64[0-9.]:%32[^,]%n",addr,port,&pos)) {
	420	fprintf(stderr, "%s: ipv4 parse error (%s)\n",
	421	__FUNCTION__, str);
	422	return -1;
	423	}
2198a62e	424	qemu_opt_set(opts, "ipv4", "on");
f4c94c7c GH	425	} else {
	426	/* hostname */
	427	if (2 != sscanf(str,"%64[^:]:%32[^,]%n",addr,port,&pos)) {
	428	fprintf(stderr, "%s: hostname parse error (%s)\n",
	429	__FUNCTION__, str);
	430	return -1;
	431	}
	432	}
	433	qemu_opt_set(opts, "host", addr);
	434	qemu_opt_set(opts, "port", port);
	435
	436	/* parse options */
	437	optstr = str + pos;
	438	h = strstr(optstr, ",to=");
	439	if (h)
	440	qemu_opt_set(opts, "to", h+4);
	441	if (strstr(optstr, ",ipv4"))
2198a62e	442	qemu_opt_set(opts, "ipv4", "on");
f4c94c7c	443	if (strstr(optstr, ",ipv6"))
2198a62e	444	qemu_opt_set(opts, "ipv6", "on");
f4c94c7c GH	445	return 0;
	446	}
	447
e5bc776f GH	448	int inet_listen(const char str, char ostr, int olen,
	449	int socktype, int port_offset)
	450	{
	451	QemuOpts *opts;
	452	char *optstr;
	453	int sock = -1;
	454
	455	opts = qemu_opts_create(&dummy_opts, NULL, 0);
	456	if (inet_parse(opts, str) == 0) {
	457	sock = inet_listen_opts(opts, port_offset);
	458	if (sock != -1 && ostr) {
	459	optstr = strchr(str, ',');
	460	if (qemu_opt_get_bool(opts, "ipv6", 0)) {
	461	snprintf(ostr, olen, "[%s]:%s%s",
	462	qemu_opt_get(opts, "host"),
	463	qemu_opt_get(opts, "port"),
	464	optstr ? optstr : "");
	465	} else {
	466	snprintf(ostr, olen, "%s:%s%s",
	467	qemu_opt_get(opts, "host"),
	468	qemu_opt_get(opts, "port"),
	469	optstr ? optstr : "");
	470	}
	471	}
	472	}
	473	qemu_opts_del(opts);
	474	return sock;
	475	}
	476
a6ba35b3	477	int inet_connect(const char str, bool block, Error *errp)
f4c94c7c GH	478	{
	479	QemuOpts *opts;
	480	int sock = -1;
	481
	482	opts = qemu_opts_create(&dummy_opts, NULL, 0);
a6ba35b3 AK	483	if (inet_parse(opts, str) == 0) {
	484	if (block) {
	485	qemu_opt_set(opts, "block", "on");
	486	}
	487	sock = inet_connect_opts(opts, errp);
	488	} else {
	489	error_set(errp, QERR_SOCKET_CREATE_FAILED);
	490	}
f4c94c7c GH	491	qemu_opts_del(opts);
	492	return sock;
	493	}
	494
d247d25f AL	495	#ifndef _WIN32
d247d25f AL	496
62b6adfb	497	int unix_listen_opts(QemuOpts *opts)
d247d25f AL	498	{
d247d25f AL	499	struct sockaddr_un un;
62b6adfb GH	500	const char *path = qemu_opt_get(opts, "path");
62b6adfb GH	501	int sock, fd;
d247d25f	502
40ff6d7e	503	sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0);
d247d25f	504	if (sock < 0) {
39b6efc8 VS	505	perror("socket(unix)");
39b6efc8 VS	506	return -1;
d247d25f AL	507	}
d247d25f AL	508
d247d25f AL	509	memset(&un, 0, sizeof(un));
	510	un.sun_family = AF_UNIX;
	511	if (path && strlen(path)) {
	512	snprintf(un.sun_path, sizeof(un.sun_path), "%s", path);
	513	} else {
	514	char *tmpdir = getenv("TMPDIR");
	515	snprintf(un.sun_path, sizeof(un.sun_path), "%s/qemu-socket-XXXXXX",
	516	tmpdir ? tmpdir : "/tmp");
	517	/*
	518	* This dummy fd usage silences the mktemp() unsecure warning.
	519	* Using mkstemp() doesn't make things more secure here
	520	* though. bind() complains about existing files, so we have
	521	* to unlink first and thus re-open the race window. The
	522	* worst case possible is bind() failing, i.e. a DoS attack.
	523	*/
	524	fd = mkstemp(un.sun_path); close(fd);
62b6adfb	525	qemu_opt_set(opts, "path", un.sun_path);
d247d25f	526	}
d247d25f AL	527
	528	unlink(un.sun_path);
	529	if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) {
	530	fprintf(stderr, "bind(unix:%s): %s\n", un.sun_path, strerror(errno));
	531	goto err;
	532	}
	533	if (listen(sock, 1) < 0) {
	534	fprintf(stderr, "listen(unix:%s): %s\n", un.sun_path, strerror(errno));
	535	goto err;
	536	}
	537
d247d25f AL	538	return sock;
	539
	540	err:
d247d25f AL	541	closesocket(sock);
	542	return -1;
	543	}
	544
2af2bf67	545	int unix_connect_opts(QemuOpts *opts)
d247d25f AL	546	{
d247d25f AL	547	struct sockaddr_un un;
2af2bf67	548	const char *path = qemu_opt_get(opts, "path");
d247d25f AL	549	int sock;
d247d25f AL	550
2af2bf67 GH	551	if (NULL == path) {
	552	fprintf(stderr, "unix connect: no path specified\n");
	553	return -1;
	554	}
	555
40ff6d7e	556	sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0);
d247d25f	557	if (sock < 0) {
39b6efc8 VS	558	perror("socket(unix)");
39b6efc8 VS	559	return -1;
d247d25f AL	560	}
	561
	562	memset(&un, 0, sizeof(un));
	563	un.sun_family = AF_UNIX;
	564	snprintf(un.sun_path, sizeof(un.sun_path), "%s", path);
	565	if (connect(sock, (struct sockaddr*) &un, sizeof(un)) < 0) {
	566	fprintf(stderr, "connect(unix:%s): %s\n", path, strerror(errno));
9d947472	567	close(sock);
d247d25f AL	568	return -1;
	569	}
	570
d247d25f AL	571	return sock;
	572	}
	573
2af2bf67	574	/* compatibility wrapper */
62b6adfb GH	575	int unix_listen(const char str, char ostr, int olen)
	576	{
	577	QemuOpts *opts;
	578	char path, optstr;
	579	int sock, len;
	580
	581	opts = qemu_opts_create(&dummy_opts, NULL, 0);
	582
	583	optstr = strchr(str, ',');
	584	if (optstr) {
	585	len = optstr - str;
	586	if (len) {
7267c094	587	path = g_malloc(len+1);
62b6adfb GH	588	snprintf(path, len+1, "%.*s", len, str);
62b6adfb GH	589	qemu_opt_set(opts, "path", path);
7267c094	590	g_free(path);
62b6adfb GH	591	}
	592	} else {
	593	qemu_opt_set(opts, "path", str);
	594	}
	595
	596	sock = unix_listen_opts(opts);
	597
	598	if (sock != -1 && ostr)
	599	snprintf(ostr, olen, "%s%s", qemu_opt_get(opts, "path"), optstr ? optstr : "");
	600	qemu_opts_del(opts);
	601	return sock;
	602	}
	603
2af2bf67 GH	604	int unix_connect(const char *path)
	605	{
	606	QemuOpts *opts;
	607	int sock;
	608
	609	opts = qemu_opts_create(&dummy_opts, NULL, 0);
	610	qemu_opt_set(opts, "path", path);
	611	sock = unix_connect_opts(opts);
	612	qemu_opts_del(opts);
	613	return sock;
	614	}
	615
d247d25f AL	616	#else
d247d25f AL	617
108af7b9 GH	618	int unix_listen_opts(QemuOpts *opts)
	619	{
	620	fprintf(stderr, "unix sockets are not available on windows\n");
b82eac92	621	errno = ENOTSUP;
108af7b9 GH	622	return -1;
	623	}
	624
	625	int unix_connect_opts(QemuOpts *opts)
	626	{
	627	fprintf(stderr, "unix sockets are not available on windows\n");
b82eac92	628	errno = ENOTSUP;
108af7b9 GH	629	return -1;
	630	}
	631
d247d25f AL	632	int unix_listen(const char path, char ostr, int olen)
	633	{
	634	fprintf(stderr, "unix sockets are not available on windows\n");
b82eac92	635	errno = ENOTSUP;
d247d25f AL	636	return -1;
	637	}
	638
	639	int unix_connect(const char *path)
	640	{
	641	fprintf(stderr, "unix sockets are not available on windows\n");
b82eac92	642	errno = ENOTSUP;
d247d25f AL	643	return -1;
	644	}
	645
	646	#endif
0706a4dc PB	647
	648	#ifdef _WIN32
	649	static void socket_cleanup(void)
	650	{
	651	WSACleanup();
	652	}
	653	#endif
	654
	655	int socket_init(void)
	656	{
	657	#ifdef _WIN32
	658	WSADATA Data;
	659	int ret, err;
	660
	661	ret = WSAStartup(MAKEWORD(2,2), &Data);
	662	if (ret != 0) {
	663	err = WSAGetLastError();
	664	fprintf(stderr, "WSAStartup: %d\n", err);
	665	return -1;
	666	}
	667	atexit(socket_cleanup);
	668	#endif
	669	return 0;
	670	}