[qemu.git] / qemu-sockets.c

/*
 *  inet and unix socket functions for qemu
 *
 *  (c) 2008 Gerd Hoffmann <[email protected]>
 *
 *  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, 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 <[email protected]>
	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
029409e5	106	int inet_listen_opts(QemuOpts opts, int port_offset, Error *errp)
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	122	fprintf(stderr, "%s: host and/or port not specified\n", __FUNCTION__);
029409e5	123	error_set(errp, QERR_SOCKET_CREATE_FAILED);
e5bc776f	124	return -1;
d247d25f	125	}
e5bc776f GH	126	pstrcpy(port, sizeof(port), qemu_opt_get(opts, "port"));
e5bc776f GH	127	addr = qemu_opt_get(opts, "host");
d247d25f	128
e5bc776f GH	129	to = qemu_opt_get_number(opts, "to", 0);
e5bc776f GH	130	if (qemu_opt_get_bool(opts, "ipv4", 0))
d247d25f	131	ai.ai_family = PF_INET;
e5bc776f	132	if (qemu_opt_get_bool(opts, "ipv6", 0))
d247d25f AL	133	ai.ai_family = PF_INET6;
	134
	135	/* lookup */
	136	if (port_offset)
	137	snprintf(port, sizeof(port), "%d", atoi(port) + port_offset);
	138	rc = getaddrinfo(strlen(addr) ? addr : NULL, port, &ai, &res);
	139	if (rc != 0) {
e5bc776f GH	140	fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
e5bc776f GH	141	gai_strerror(rc));
029409e5	142	error_set(errp, QERR_SOCKET_CREATE_FAILED);
d247d25f AL	143	return -1;
d247d25f AL	144	}
d247d25f AL	145
	146	/* create socket + bind */
	147	for (e = res; e != NULL; e = e->ai_next) {
39b6efc8 VS	148	getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen,
	149	uaddr,INET6_ADDRSTRLEN,uport,32,
	150	NI_NUMERICHOST \| NI_NUMERICSERV);
40ff6d7e	151	slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol);
39b6efc8	152	if (slisten < 0) {
d247d25f AL	153	fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__,
d247d25f AL	154	inet_strfamily(e->ai_family), strerror(errno));
029409e5 AK	155	if (!e->ai_next) {
	156	error_set(errp, QERR_SOCKET_CREATE_FAILED);
	157	}
39b6efc8 VS	158	continue;
39b6efc8 VS	159	}
d247d25f AL	160
	161	setsockopt(slisten,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on));
	162	#ifdef IPV6_V6ONLY
	163	if (e->ai_family == PF_INET6) {
	164	/* listen on both ipv4 and ipv6 */
39b6efc8 VS	165	setsockopt(slisten,IPPROTO_IPV6,IPV6_V6ONLY,(void*)&off,
39b6efc8 VS	166	sizeof(off));
d247d25f AL	167	}
	168	#endif
	169
877691f9 MA	170	port_min = inet_getport(e);
	171	port_max = to ? to + port_offset : port_min;
	172	for (p = port_min; p <= port_max; p++) {
	173	inet_setport(e, p);
d247d25f	174	if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) {
d247d25f AL	175	goto listen;
d247d25f AL	176	}
877691f9	177	if (p == port_max) {
d247d25f AL	178	fprintf(stderr,"%s: bind(%s,%s,%d): %s\n", __FUNCTION__,
	179	inet_strfamily(e->ai_family), uaddr, inet_getport(e),
	180	strerror(errno));
029409e5 AK	181	if (!e->ai_next) {
	182	error_set(errp, QERR_SOCKET_BIND_FAILED);
	183	}
d247d25f	184	}
d247d25f AL	185	}
	186	closesocket(slisten);
	187	}
	188	fprintf(stderr, "%s: FAILED\n", __FUNCTION__);
	189	freeaddrinfo(res);
	190	return -1;
	191
	192	listen:
	193	if (listen(slisten,1) != 0) {
029409e5	194	error_set(errp, QERR_SOCKET_LISTEN_FAILED);
d247d25f AL	195	perror("listen");
d247d25f AL	196	closesocket(slisten);
39b6efc8	197	freeaddrinfo(res);
d247d25f AL	198	return -1;
d247d25f AL	199	}
e5bc776f GH	200	snprintf(uport, sizeof(uport), "%d", inet_getport(e) - port_offset);
	201	qemu_opt_set(opts, "host", uaddr);
	202	qemu_opt_set(opts, "port", uport);
	203	qemu_opt_set(opts, "ipv6", (e->ai_family == PF_INET6) ? "on" : "off");
	204	qemu_opt_set(opts, "ipv4", (e->ai_family != PF_INET6) ? "on" : "off");
d247d25f AL	205	freeaddrinfo(res);
	206	return slisten;
	207	}
	208
a6ba35b3	209	int inet_connect_opts(QemuOpts opts, Error *errp)
d247d25f AL	210	{
d247d25f AL	211	struct addrinfo ai,res,e;
f4c94c7c GH	212	const char *addr;
f4c94c7c GH	213	const char *port;
d247d25f AL	214	char uaddr[INET6_ADDRSTRLEN+1];
	215	char uport[33];
	216	int sock,rc;
a6ba35b3	217	bool block;
d247d25f AL	218
	219	memset(&ai,0, sizeof(ai));
	220	ai.ai_flags = AI_CANONNAME \| AI_ADDRCONFIG;
	221	ai.ai_family = PF_UNSPEC;
f4c94c7c	222	ai.ai_socktype = SOCK_STREAM;
d247d25f	223
f4c94c7c GH	224	addr = qemu_opt_get(opts, "host");
f4c94c7c GH	225	port = qemu_opt_get(opts, "port");
a6ba35b3	226	block = qemu_opt_get_bool(opts, "block", 0);
f4c94c7c GH	227	if (addr == NULL \|\| port == NULL) {
f4c94c7c GH	228	fprintf(stderr, "inet_connect: host and/or port not specified\n");
a6ba35b3	229	error_set(errp, QERR_SOCKET_CREATE_FAILED);
f4c94c7c	230	return -1;
d247d25f AL	231	}
d247d25f AL	232
f4c94c7c	233	if (qemu_opt_get_bool(opts, "ipv4", 0))
d247d25f	234	ai.ai_family = PF_INET;
f4c94c7c	235	if (qemu_opt_get_bool(opts, "ipv6", 0))
d247d25f AL	236	ai.ai_family = PF_INET6;
	237
	238	/* lookup */
	239	if (0 != (rc = getaddrinfo(addr, port, &ai, &res))) {
f4c94c7c GH	240	fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
f4c94c7c GH	241	gai_strerror(rc));
a6ba35b3	242	error_set(errp, QERR_SOCKET_CREATE_FAILED);
d247d25f AL	243	return -1;
d247d25f AL	244	}
d247d25f AL	245
d247d25f AL	246	for (e = res; e != NULL; e = e->ai_next) {
39b6efc8 VS	247	if (getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen,
	248	uaddr,INET6_ADDRSTRLEN,uport,32,
	249	NI_NUMERICHOST \| NI_NUMERICSERV) != 0) {
d247d25f	250	fprintf(stderr,"%s: getnameinfo: oops\n", __FUNCTION__);
39b6efc8 VS	251	continue;
39b6efc8 VS	252	}
40ff6d7e	253	sock = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol);
39b6efc8	254	if (sock < 0) {
d247d25f	255	fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__,
39b6efc8 VS	256	inet_strfamily(e->ai_family), strerror(errno));
	257	continue;
	258	}
d247d25f	259	setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on));
a6ba35b3 AK	260	if (!block) {
	261	socket_set_nonblock(sock);
	262	}
39b6efc8	263	/* connect to peer */
a6ba35b3 AK	264	do {
	265	rc = 0;
	266	if (connect(sock, e->ai_addr, e->ai_addrlen) < 0) {
	267	rc = -socket_error();
	268	}
	269	} while (rc == -EINTR);
	270
	271	#ifdef _WIN32
	272	if (!block && (rc == -EINPROGRESS \|\| rc == -EWOULDBLOCK
	273	\|\| rc == -WSAEALREADY)) {
	274	#else
	275	if (!block && (rc == -EINPROGRESS)) {
	276	#endif
	277	error_set(errp, QERR_SOCKET_CONNECT_IN_PROGRESS);
	278	} else if (rc < 0) {
136faa36	279	if (NULL == e->ai_next)
d247d25f AL	280	fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__,
	281	inet_strfamily(e->ai_family),
	282	e->ai_canonname, uaddr, uport, strerror(errno));
	283	closesocket(sock);
a6ba35b3	284	sock = -1;
39b6efc8 VS	285	continue;
39b6efc8 VS	286	}
d247d25f	287	freeaddrinfo(res);
39b6efc8	288	return sock;
d247d25f	289	}
a6ba35b3	290	error_set(errp, QERR_SOCKET_CONNECT_FAILED);
d247d25f AL	291	freeaddrinfo(res);
	292	return -1;
	293	}
	294
7e1b35b4 GH	295	int inet_dgram_opts(QemuOpts *opts)
	296	{
	297	struct addrinfo ai, peer = NULL, local = NULL;
	298	const char *addr;
	299	const char *port;
	300	char uaddr[INET6_ADDRSTRLEN+1];
	301	char uport[33];
	302	int sock = -1, rc;
	303
	304	/* lookup peer addr */
	305	memset(&ai,0, sizeof(ai));
	306	ai.ai_flags = AI_CANONNAME \| AI_ADDRCONFIG;
	307	ai.ai_family = PF_UNSPEC;
	308	ai.ai_socktype = SOCK_DGRAM;
	309
	310	addr = qemu_opt_get(opts, "host");
	311	port = qemu_opt_get(opts, "port");
	312	if (addr == NULL \|\| strlen(addr) == 0) {
	313	addr = "localhost";
	314	}
	315	if (port == NULL \|\| strlen(port) == 0) {
	316	fprintf(stderr, "inet_dgram: port not specified\n");
	317	return -1;
	318	}
	319
	320	if (qemu_opt_get_bool(opts, "ipv4", 0))
	321	ai.ai_family = PF_INET;
	322	if (qemu_opt_get_bool(opts, "ipv6", 0))
	323	ai.ai_family = PF_INET6;
	324
	325	if (0 != (rc = getaddrinfo(addr, port, &ai, &peer))) {
	326	fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
	327	gai_strerror(rc));
	328	return -1;
	329	}
7e1b35b4 GH	330
	331	/* lookup local addr */
	332	memset(&ai,0, sizeof(ai));
	333	ai.ai_flags = AI_PASSIVE;
	334	ai.ai_family = peer->ai_family;
	335	ai.ai_socktype = SOCK_DGRAM;
	336
	337	addr = qemu_opt_get(opts, "localaddr");
	338	port = qemu_opt_get(opts, "localport");
	339	if (addr == NULL \|\| strlen(addr) == 0) {
	340	addr = NULL;
	341	}
	342	if (!port \|\| strlen(port) == 0)
	343	port = "0";
	344
	345	if (0 != (rc = getaddrinfo(addr, port, &ai, &local))) {
	346	fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
	347	gai_strerror(rc));
	348	return -1;
	349	}
7e1b35b4 GH	350
7e1b35b4 GH	351	/* create socket */
40ff6d7e	352	sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol);
7e1b35b4 GH	353	if (sock < 0) {
	354	fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__,
	355	inet_strfamily(peer->ai_family), strerror(errno));
	356	goto err;
	357	}
	358	setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void*)&on,sizeof(on));
	359
	360	/* bind socket */
	361	if (getnameinfo((struct sockaddr*)local->ai_addr,local->ai_addrlen,
	362	uaddr,INET6_ADDRSTRLEN,uport,32,
	363	NI_NUMERICHOST \| NI_NUMERICSERV) != 0) {
	364	fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__);
	365	goto err;
	366	}
	367	if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) {
	368	fprintf(stderr,"%s: bind(%s,%s,%d): OK\n", __FUNCTION__,
	369	inet_strfamily(local->ai_family), uaddr, inet_getport(local));
	370	goto err;
	371	}
	372
	373	/* connect to peer */
	374	if (getnameinfo((struct sockaddr*)peer->ai_addr, peer->ai_addrlen,
	375	uaddr, INET6_ADDRSTRLEN, uport, 32,
	376	NI_NUMERICHOST \| NI_NUMERICSERV) != 0) {
	377	fprintf(stderr, "%s: getnameinfo: oops\n", __FUNCTION__);
	378	goto err;
	379	}
	380	if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) {
	381	fprintf(stderr, "%s: connect(%s,%s,%s,%s): %s\n", __FUNCTION__,
	382	inet_strfamily(peer->ai_family),
	383	peer->ai_canonname, uaddr, uport, strerror(errno));
	384	goto err;
	385	}
	386
	387	freeaddrinfo(local);
	388	freeaddrinfo(peer);
	389	return sock;
	390
	391	err:
	392	if (-1 != sock)
	393	closesocket(sock);
	394	if (local)
	395	freeaddrinfo(local);
	396	if (peer)
	397	freeaddrinfo(peer);
	398	return -1;
	399	}
	400
f4c94c7c GH	401	/* compatibility wrapper */
	402	static int inet_parse(QemuOpts opts, const char str)
	403	{
	404	const char optstr, h;
	405	char addr[64];
	406	char port[33];
	407	int pos;
	408
	409	/* parse address */
	410	if (str[0] == ':') {
	411	/* no host given */
	412	addr[0] = '\0';
	413	if (1 != sscanf(str,":%32[^,]%n",port,&pos)) {
	414	fprintf(stderr, "%s: portonly parse error (%s)\n",
	415	__FUNCTION__, str);
	416	return -1;
	417	}
	418	} else if (str[0] == '[') {
	419	/* IPv6 addr */
	420	if (2 != sscanf(str,"[%64[^]]]:%32[^,]%n",addr,port,&pos)) {
	421	fprintf(stderr, "%s: ipv6 parse error (%s)\n",
	422	__FUNCTION__, str);
	423	return -1;
	424	}
2198a62e	425	qemu_opt_set(opts, "ipv6", "on");
f4c94c7c GH	426	} else if (qemu_isdigit(str[0])) {
	427	/* IPv4 addr */
	428	if (2 != sscanf(str,"%64[0-9.]:%32[^,]%n",addr,port,&pos)) {
	429	fprintf(stderr, "%s: ipv4 parse error (%s)\n",
	430	__FUNCTION__, str);
	431	return -1;
	432	}
2198a62e	433	qemu_opt_set(opts, "ipv4", "on");
f4c94c7c GH	434	} else {
	435	/* hostname */
	436	if (2 != sscanf(str,"%64[^:]:%32[^,]%n",addr,port,&pos)) {
	437	fprintf(stderr, "%s: hostname parse error (%s)\n",
	438	__FUNCTION__, str);
	439	return -1;
	440	}
	441	}
	442	qemu_opt_set(opts, "host", addr);
	443	qemu_opt_set(opts, "port", port);
	444
	445	/* parse options */
	446	optstr = str + pos;
	447	h = strstr(optstr, ",to=");
	448	if (h)
	449	qemu_opt_set(opts, "to", h+4);
	450	if (strstr(optstr, ",ipv4"))
2198a62e	451	qemu_opt_set(opts, "ipv4", "on");
f4c94c7c	452	if (strstr(optstr, ",ipv6"))
2198a62e	453	qemu_opt_set(opts, "ipv6", "on");
f4c94c7c GH	454	return 0;
	455	}
	456
e5bc776f	457	int inet_listen(const char str, char ostr, int olen,
029409e5	458	int socktype, int port_offset, Error **errp)
e5bc776f GH	459	{
	460	QemuOpts *opts;
	461	char *optstr;
	462	int sock = -1;
	463
8be7e7e4	464	opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
e5bc776f	465	if (inet_parse(opts, str) == 0) {
029409e5	466	sock = inet_listen_opts(opts, port_offset, errp);
e5bc776f GH	467	if (sock != -1 && ostr) {
	468	optstr = strchr(str, ',');
	469	if (qemu_opt_get_bool(opts, "ipv6", 0)) {
	470	snprintf(ostr, olen, "[%s]:%s%s",
	471	qemu_opt_get(opts, "host"),
	472	qemu_opt_get(opts, "port"),
	473	optstr ? optstr : "");
	474	} else {
	475	snprintf(ostr, olen, "%s:%s%s",
	476	qemu_opt_get(opts, "host"),
	477	qemu_opt_get(opts, "port"),
	478	optstr ? optstr : "");
	479	}
	480	}
029409e5 AK	481	} else {
029409e5 AK	482	error_set(errp, QERR_SOCKET_CREATE_FAILED);
e5bc776f GH	483	}
	484	qemu_opts_del(opts);
	485	return sock;
	486	}
	487
a6ba35b3	488	int inet_connect(const char str, bool block, Error *errp)
f4c94c7c GH	489	{
	490	QemuOpts *opts;
	491	int sock = -1;
	492
8be7e7e4	493	opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
a6ba35b3 AK	494	if (inet_parse(opts, str) == 0) {
	495	if (block) {
	496	qemu_opt_set(opts, "block", "on");
	497	}
	498	sock = inet_connect_opts(opts, errp);
	499	} else {
	500	error_set(errp, QERR_SOCKET_CREATE_FAILED);
	501	}
f4c94c7c GH	502	qemu_opts_del(opts);
	503	return sock;
	504	}
	505
d247d25f AL	506	#ifndef _WIN32
d247d25f AL	507
62b6adfb	508	int unix_listen_opts(QemuOpts *opts)
d247d25f AL	509	{
d247d25f AL	510	struct sockaddr_un un;
62b6adfb GH	511	const char *path = qemu_opt_get(opts, "path");
62b6adfb GH	512	int sock, fd;
d247d25f	513
40ff6d7e	514	sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0);
d247d25f	515	if (sock < 0) {
39b6efc8 VS	516	perror("socket(unix)");
39b6efc8 VS	517	return -1;
d247d25f AL	518	}
d247d25f AL	519
d247d25f AL	520	memset(&un, 0, sizeof(un));
	521	un.sun_family = AF_UNIX;
	522	if (path && strlen(path)) {
	523	snprintf(un.sun_path, sizeof(un.sun_path), "%s", path);
	524	} else {
	525	char *tmpdir = getenv("TMPDIR");
	526	snprintf(un.sun_path, sizeof(un.sun_path), "%s/qemu-socket-XXXXXX",
	527	tmpdir ? tmpdir : "/tmp");
	528	/*
	529	* This dummy fd usage silences the mktemp() unsecure warning.
	530	* Using mkstemp() doesn't make things more secure here
	531	* though. bind() complains about existing files, so we have
	532	* to unlink first and thus re-open the race window. The
	533	* worst case possible is bind() failing, i.e. a DoS attack.
	534	*/
	535	fd = mkstemp(un.sun_path); close(fd);
62b6adfb	536	qemu_opt_set(opts, "path", un.sun_path);
d247d25f	537	}
d247d25f AL	538
	539	unlink(un.sun_path);
	540	if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) {
	541	fprintf(stderr, "bind(unix:%s): %s\n", un.sun_path, strerror(errno));
	542	goto err;
	543	}
	544	if (listen(sock, 1) < 0) {
	545	fprintf(stderr, "listen(unix:%s): %s\n", un.sun_path, strerror(errno));
	546	goto err;
	547	}
	548
d247d25f AL	549	return sock;
	550
	551	err:
d247d25f AL	552	closesocket(sock);
	553	return -1;
	554	}
	555
2af2bf67	556	int unix_connect_opts(QemuOpts *opts)
d247d25f AL	557	{
d247d25f AL	558	struct sockaddr_un un;
2af2bf67	559	const char *path = qemu_opt_get(opts, "path");
d247d25f AL	560	int sock;
d247d25f AL	561
2af2bf67 GH	562	if (NULL == path) {
	563	fprintf(stderr, "unix connect: no path specified\n");
	564	return -1;
	565	}
	566
40ff6d7e	567	sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0);
d247d25f	568	if (sock < 0) {
39b6efc8 VS	569	perror("socket(unix)");
39b6efc8 VS	570	return -1;
d247d25f AL	571	}
	572
	573	memset(&un, 0, sizeof(un));
	574	un.sun_family = AF_UNIX;
	575	snprintf(un.sun_path, sizeof(un.sun_path), "%s", path);
	576	if (connect(sock, (struct sockaddr*) &un, sizeof(un)) < 0) {
	577	fprintf(stderr, "connect(unix:%s): %s\n", path, strerror(errno));
9d947472	578	close(sock);
d247d25f AL	579	return -1;
	580	}
	581
d247d25f AL	582	return sock;
	583	}
	584
2af2bf67	585	/* compatibility wrapper */
62b6adfb GH	586	int unix_listen(const char str, char ostr, int olen)
	587	{
	588	QemuOpts *opts;
	589	char path, optstr;
	590	int sock, len;
	591
8be7e7e4	592	opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
62b6adfb GH	593
	594	optstr = strchr(str, ',');
	595	if (optstr) {
	596	len = optstr - str;
	597	if (len) {
7267c094	598	path = g_malloc(len+1);
62b6adfb GH	599	snprintf(path, len+1, "%.*s", len, str);
62b6adfb GH	600	qemu_opt_set(opts, "path", path);
7267c094	601	g_free(path);
62b6adfb GH	602	}
	603	} else {
	604	qemu_opt_set(opts, "path", str);
	605	}
	606
	607	sock = unix_listen_opts(opts);
	608
	609	if (sock != -1 && ostr)
	610	snprintf(ostr, olen, "%s%s", qemu_opt_get(opts, "path"), optstr ? optstr : "");
	611	qemu_opts_del(opts);
	612	return sock;
	613	}
	614
2af2bf67 GH	615	int unix_connect(const char *path)
	616	{
	617	QemuOpts *opts;
	618	int sock;
	619
8be7e7e4	620	opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
2af2bf67 GH	621	qemu_opt_set(opts, "path", path);
	622	sock = unix_connect_opts(opts);
	623	qemu_opts_del(opts);
	624	return sock;
	625	}
	626
d247d25f AL	627	#else
d247d25f AL	628
108af7b9 GH	629	int unix_listen_opts(QemuOpts *opts)
	630	{
	631	fprintf(stderr, "unix sockets are not available on windows\n");
b82eac92	632	errno = ENOTSUP;
108af7b9 GH	633	return -1;
	634	}
	635
	636	int unix_connect_opts(QemuOpts *opts)
	637	{
	638	fprintf(stderr, "unix sockets are not available on windows\n");
b82eac92	639	errno = ENOTSUP;
108af7b9 GH	640	return -1;
	641	}
	642
d247d25f AL	643	int unix_listen(const char path, char ostr, int olen)
	644	{
	645	fprintf(stderr, "unix sockets are not available on windows\n");
b82eac92	646	errno = ENOTSUP;
d247d25f AL	647	return -1;
	648	}
	649
	650	int unix_connect(const char *path)
	651	{
	652	fprintf(stderr, "unix sockets are not available on windows\n");
b82eac92	653	errno = ENOTSUP;
d247d25f AL	654	return -1;
	655	}
	656
	657	#endif
0706a4dc PB	658
	659	#ifdef _WIN32
	660	static void socket_cleanup(void)
	661	{
	662	WSACleanup();
	663	}
	664	#endif
	665
	666	int socket_init(void)
	667	{
	668	#ifdef _WIN32
	669	WSADATA Data;
	670	int ret, err;
	671
	672	ret = WSAStartup(MAKEWORD(2,2), &Data);
	673	if (ret != 0) {
	674	err = WSAGetLastError();
	675	fprintf(stderr, "WSAStartup: %d\n", err);
	676	return -1;
	677	}
	678	atexit(socket_cleanup);
	679	#endif
	680	return 0;
	681	}