795 lines
22 KiB
C
795 lines
22 KiB
C
/*
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* QEMU System Emulator
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "net/slirp.h"
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#include "config-host.h"
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#ifndef _WIN32
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#include <pwd.h>
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#include <sys/wait.h>
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#endif
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#include "net/net.h"
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#include "clients.h"
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#include "hub.h"
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#include "monitor/monitor.h"
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#include "qemu/sockets.h"
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#include "slirp/libslirp.h"
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#include "sysemu/char.h"
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static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
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{
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const char *p, *p1;
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int len;
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p = *pp;
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p1 = strchr(p, sep);
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if (!p1)
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return -1;
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len = p1 - p;
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p1++;
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if (buf_size > 0) {
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if (len > buf_size - 1)
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len = buf_size - 1;
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memcpy(buf, p, len);
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buf[len] = '\0';
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}
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*pp = p1;
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return 0;
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}
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/* slirp network adapter */
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#define SLIRP_CFG_HOSTFWD 1
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#define SLIRP_CFG_LEGACY 2
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struct slirp_config_str {
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struct slirp_config_str *next;
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int flags;
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char str[1024];
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int legacy_format;
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};
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typedef struct SlirpState {
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NetClientState nc;
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QTAILQ_ENTRY(SlirpState) entry;
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Slirp *slirp;
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#ifndef _WIN32
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char smb_dir[128];
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#endif
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} SlirpState;
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static struct slirp_config_str *slirp_configs;
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const char *legacy_tftp_prefix;
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const char *legacy_bootp_filename;
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static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
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QTAILQ_HEAD_INITIALIZER(slirp_stacks);
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static int slirp_hostfwd(SlirpState *s, const char *redir_str,
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int legacy_format);
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static int slirp_guestfwd(SlirpState *s, const char *config_str,
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int legacy_format);
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#ifndef _WIN32
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static const char *legacy_smb_export;
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static int slirp_smb(SlirpState *s, const char *exported_dir,
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struct in_addr vserver_addr);
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static void slirp_smb_cleanup(SlirpState *s);
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#else
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static inline void slirp_smb_cleanup(SlirpState *s) { }
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#endif
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void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
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{
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SlirpState *s = opaque;
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qemu_send_packet(&s->nc, pkt, pkt_len);
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}
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static ssize_t net_slirp_receive(NetClientState *nc, const uint8_t *buf, size_t size)
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{
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SlirpState *s = DO_UPCAST(SlirpState, nc, nc);
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slirp_input(s->slirp, buf, size);
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return size;
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}
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static void net_slirp_cleanup(NetClientState *nc)
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{
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SlirpState *s = DO_UPCAST(SlirpState, nc, nc);
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slirp_cleanup(s->slirp);
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slirp_smb_cleanup(s);
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QTAILQ_REMOVE(&slirp_stacks, s, entry);
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}
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static NetClientInfo net_slirp_info = {
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.type = NET_CLIENT_OPTIONS_KIND_USER,
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.size = sizeof(SlirpState),
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.receive = net_slirp_receive,
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.cleanup = net_slirp_cleanup,
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};
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static int net_slirp_init(NetClientState *peer, const char *model,
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const char *name, int restricted,
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const char *vnetwork, const char *vhost,
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const char *vhostname, const char *tftp_export,
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const char *bootfile, const char *vdhcp_start,
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const char *vnameserver, const char *smb_export,
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const char *vsmbserver, const char **dnssearch)
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{
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/* default settings according to historic slirp */
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struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
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struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
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struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
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struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
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struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
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#ifndef _WIN32
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struct in_addr smbsrv = { .s_addr = 0 };
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#endif
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NetClientState *nc;
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SlirpState *s;
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char buf[20];
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uint32_t addr;
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int shift;
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char *end;
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struct slirp_config_str *config;
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if (!tftp_export) {
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tftp_export = legacy_tftp_prefix;
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}
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if (!bootfile) {
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bootfile = legacy_bootp_filename;
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}
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if (vnetwork) {
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if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
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if (!inet_aton(vnetwork, &net)) {
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return -1;
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}
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addr = ntohl(net.s_addr);
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if (!(addr & 0x80000000)) {
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mask.s_addr = htonl(0xff000000); /* class A */
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} else if ((addr & 0xfff00000) == 0xac100000) {
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mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
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} else if ((addr & 0xc0000000) == 0x80000000) {
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mask.s_addr = htonl(0xffff0000); /* class B */
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} else if ((addr & 0xffff0000) == 0xc0a80000) {
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mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
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} else if ((addr & 0xffff0000) == 0xc6120000) {
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mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
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} else if ((addr & 0xe0000000) == 0xe0000000) {
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mask.s_addr = htonl(0xffffff00); /* class C */
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} else {
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mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
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}
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} else {
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if (!inet_aton(buf, &net)) {
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return -1;
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}
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shift = strtol(vnetwork, &end, 10);
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if (*end != '\0') {
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if (!inet_aton(vnetwork, &mask)) {
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return -1;
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}
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} else if (shift < 4 || shift > 32) {
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return -1;
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} else {
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mask.s_addr = htonl(0xffffffff << (32 - shift));
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}
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}
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net.s_addr &= mask.s_addr;
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host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
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dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
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dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
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}
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if (vhost && !inet_aton(vhost, &host)) {
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return -1;
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}
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if ((host.s_addr & mask.s_addr) != net.s_addr) {
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return -1;
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}
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if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
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return -1;
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}
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if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
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dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
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return -1;
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}
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if (vnameserver && !inet_aton(vnameserver, &dns)) {
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return -1;
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}
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if ((dns.s_addr & mask.s_addr) != net.s_addr ||
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dns.s_addr == host.s_addr) {
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return -1;
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}
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#ifndef _WIN32
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if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
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return -1;
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}
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#endif
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nc = qemu_new_net_client(&net_slirp_info, peer, model, name);
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snprintf(nc->info_str, sizeof(nc->info_str),
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"net=%s,restrict=%s", inet_ntoa(net),
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restricted ? "on" : "off");
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s = DO_UPCAST(SlirpState, nc, nc);
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s->slirp = slirp_init(restricted, net, mask, host, vhostname,
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tftp_export, bootfile, dhcp, dns, dnssearch, s);
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QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
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for (config = slirp_configs; config; config = config->next) {
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if (config->flags & SLIRP_CFG_HOSTFWD) {
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if (slirp_hostfwd(s, config->str,
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config->flags & SLIRP_CFG_LEGACY) < 0)
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goto error;
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} else {
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if (slirp_guestfwd(s, config->str,
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config->flags & SLIRP_CFG_LEGACY) < 0)
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goto error;
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}
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}
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#ifndef _WIN32
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if (!smb_export) {
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smb_export = legacy_smb_export;
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}
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if (smb_export) {
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if (slirp_smb(s, smb_export, smbsrv) < 0)
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goto error;
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}
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#endif
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return 0;
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error:
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qemu_del_net_client(nc);
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return -1;
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}
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static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
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const char *stack)
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{
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if (vlan) {
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NetClientState *nc;
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nc = net_hub_find_client_by_name(strtol(vlan, NULL, 0), stack);
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if (!nc) {
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return NULL;
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}
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if (strcmp(nc->model, "user")) {
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monitor_printf(mon, "invalid device specified\n");
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return NULL;
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}
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return DO_UPCAST(SlirpState, nc, nc);
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} else {
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if (QTAILQ_EMPTY(&slirp_stacks)) {
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monitor_printf(mon, "user mode network stack not in use\n");
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return NULL;
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}
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return QTAILQ_FIRST(&slirp_stacks);
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}
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}
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void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict)
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{
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struct in_addr host_addr = { .s_addr = INADDR_ANY };
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int host_port;
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char buf[256];
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const char *src_str, *p;
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SlirpState *s;
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int is_udp = 0;
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int err;
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const char *arg1 = qdict_get_str(qdict, "arg1");
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const char *arg2 = qdict_get_try_str(qdict, "arg2");
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const char *arg3 = qdict_get_try_str(qdict, "arg3");
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if (arg2) {
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s = slirp_lookup(mon, arg1, arg2);
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src_str = arg3;
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} else {
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s = slirp_lookup(mon, NULL, NULL);
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src_str = arg1;
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}
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if (!s) {
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return;
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}
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p = src_str;
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if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
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goto fail_syntax;
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}
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if (!strcmp(buf, "tcp") || buf[0] == '\0') {
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is_udp = 0;
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} else if (!strcmp(buf, "udp")) {
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is_udp = 1;
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} else {
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goto fail_syntax;
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}
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if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
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goto fail_syntax;
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}
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if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
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goto fail_syntax;
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}
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host_port = atoi(p);
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err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
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host_addr, host_port);
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monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
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err ? "not found" : "removed");
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return;
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fail_syntax:
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monitor_printf(mon, "invalid format\n");
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}
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static int slirp_hostfwd(SlirpState *s, const char *redir_str,
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int legacy_format)
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{
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struct in_addr host_addr = { .s_addr = INADDR_ANY };
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struct in_addr guest_addr = { .s_addr = 0 };
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int host_port, guest_port;
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const char *p;
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char buf[256];
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int is_udp;
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char *end;
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p = redir_str;
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if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
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goto fail_syntax;
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}
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if (!strcmp(buf, "tcp") || buf[0] == '\0') {
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is_udp = 0;
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} else if (!strcmp(buf, "udp")) {
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is_udp = 1;
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} else {
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goto fail_syntax;
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}
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if (!legacy_format) {
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if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
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goto fail_syntax;
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}
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if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
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goto fail_syntax;
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}
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}
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if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
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goto fail_syntax;
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}
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host_port = strtol(buf, &end, 0);
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if (*end != '\0' || host_port < 1 || host_port > 65535) {
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goto fail_syntax;
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}
|
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if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
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goto fail_syntax;
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}
|
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if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
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goto fail_syntax;
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}
|
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guest_port = strtol(p, &end, 0);
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if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
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goto fail_syntax;
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}
|
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|
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if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
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guest_port) < 0) {
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error_report("could not set up host forwarding rule '%s'",
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redir_str);
|
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return -1;
|
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}
|
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return 0;
|
|
|
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fail_syntax:
|
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error_report("invalid host forwarding rule '%s'", redir_str);
|
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return -1;
|
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}
|
|
|
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void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict)
|
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{
|
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const char *redir_str;
|
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SlirpState *s;
|
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const char *arg1 = qdict_get_str(qdict, "arg1");
|
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const char *arg2 = qdict_get_try_str(qdict, "arg2");
|
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const char *arg3 = qdict_get_try_str(qdict, "arg3");
|
|
|
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if (arg2) {
|
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s = slirp_lookup(mon, arg1, arg2);
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redir_str = arg3;
|
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} else {
|
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s = slirp_lookup(mon, NULL, NULL);
|
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redir_str = arg1;
|
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}
|
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if (s) {
|
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slirp_hostfwd(s, redir_str, 0);
|
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}
|
|
|
|
}
|
|
|
|
int net_slirp_redir(const char *redir_str)
|
|
{
|
|
struct slirp_config_str *config;
|
|
|
|
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
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config = g_malloc(sizeof(*config));
|
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pstrcpy(config->str, sizeof(config->str), redir_str);
|
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config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
|
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config->next = slirp_configs;
|
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slirp_configs = config;
|
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return 0;
|
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}
|
|
|
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return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1);
|
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}
|
|
|
|
#ifndef _WIN32
|
|
|
|
/* automatic user mode samba server configuration */
|
|
static void slirp_smb_cleanup(SlirpState *s)
|
|
{
|
|
char cmd[128];
|
|
int ret;
|
|
|
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if (s->smb_dir[0] != '\0') {
|
|
snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
|
|
ret = system(cmd);
|
|
if (ret == -1 || !WIFEXITED(ret)) {
|
|
error_report("'%s' failed.", cmd);
|
|
} else if (WEXITSTATUS(ret)) {
|
|
error_report("'%s' failed. Error code: %d",
|
|
cmd, WEXITSTATUS(ret));
|
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}
|
|
s->smb_dir[0] = '\0';
|
|
}
|
|
}
|
|
|
|
static int slirp_smb(SlirpState* s, const char *exported_dir,
|
|
struct in_addr vserver_addr)
|
|
{
|
|
static int instance;
|
|
char smb_conf[128];
|
|
char smb_cmdline[128];
|
|
struct passwd *passwd;
|
|
FILE *f;
|
|
|
|
passwd = getpwuid(geteuid());
|
|
if (!passwd) {
|
|
error_report("failed to retrieve user name");
|
|
return -1;
|
|
}
|
|
|
|
if (access(CONFIG_SMBD_COMMAND, F_OK)) {
|
|
error_report("could not find '%s', please install it",
|
|
CONFIG_SMBD_COMMAND);
|
|
return -1;
|
|
}
|
|
|
|
if (access(exported_dir, R_OK | X_OK)) {
|
|
error_report("error accessing shared directory '%s': %s",
|
|
exported_dir, strerror(errno));
|
|
return -1;
|
|
}
|
|
|
|
snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
|
|
(long)getpid(), instance++);
|
|
if (mkdir(s->smb_dir, 0700) < 0) {
|
|
error_report("could not create samba server dir '%s'", s->smb_dir);
|
|
return -1;
|
|
}
|
|
snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
|
|
|
|
f = fopen(smb_conf, "w");
|
|
if (!f) {
|
|
slirp_smb_cleanup(s);
|
|
error_report("could not create samba server configuration file '%s'",
|
|
smb_conf);
|
|
return -1;
|
|
}
|
|
fprintf(f,
|
|
"[global]\n"
|
|
"private dir=%s\n"
|
|
"socket address=127.0.0.1\n"
|
|
"pid directory=%s\n"
|
|
"lock directory=%s\n"
|
|
"state directory=%s\n"
|
|
"log file=%s/log.smbd\n"
|
|
"smb passwd file=%s/smbpasswd\n"
|
|
"security = share\n"
|
|
"[qemu]\n"
|
|
"path=%s\n"
|
|
"read only=no\n"
|
|
"guest ok=yes\n"
|
|
"force user=%s\n",
|
|
s->smb_dir,
|
|
s->smb_dir,
|
|
s->smb_dir,
|
|
s->smb_dir,
|
|
s->smb_dir,
|
|
s->smb_dir,
|
|
exported_dir,
|
|
passwd->pw_name
|
|
);
|
|
fclose(f);
|
|
|
|
snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
|
|
CONFIG_SMBD_COMMAND, smb_conf);
|
|
|
|
if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
|
|
slirp_smb_cleanup(s);
|
|
error_report("conflicting/invalid smbserver address");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* automatic user mode samba server configuration (legacy interface) */
|
|
int net_slirp_smb(const char *exported_dir)
|
|
{
|
|
struct in_addr vserver_addr = { .s_addr = 0 };
|
|
|
|
if (legacy_smb_export) {
|
|
fprintf(stderr, "-smb given twice\n");
|
|
return -1;
|
|
}
|
|
legacy_smb_export = exported_dir;
|
|
if (!QTAILQ_EMPTY(&slirp_stacks)) {
|
|
return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
|
|
vserver_addr);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#endif /* !defined(_WIN32) */
|
|
|
|
struct GuestFwd {
|
|
CharDriverState *hd;
|
|
struct in_addr server;
|
|
int port;
|
|
Slirp *slirp;
|
|
};
|
|
|
|
static int guestfwd_can_read(void *opaque)
|
|
{
|
|
struct GuestFwd *fwd = opaque;
|
|
return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
|
|
}
|
|
|
|
static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
|
|
{
|
|
struct GuestFwd *fwd = opaque;
|
|
slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
|
|
}
|
|
|
|
static int slirp_guestfwd(SlirpState *s, const char *config_str,
|
|
int legacy_format)
|
|
{
|
|
struct in_addr server = { .s_addr = 0 };
|
|
struct GuestFwd *fwd;
|
|
const char *p;
|
|
char buf[128];
|
|
char *end;
|
|
int port;
|
|
|
|
p = config_str;
|
|
if (legacy_format) {
|
|
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
|
|
goto fail_syntax;
|
|
}
|
|
} else {
|
|
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
|
|
goto fail_syntax;
|
|
}
|
|
if (strcmp(buf, "tcp") && buf[0] != '\0') {
|
|
goto fail_syntax;
|
|
}
|
|
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
|
|
goto fail_syntax;
|
|
}
|
|
if (buf[0] != '\0' && !inet_aton(buf, &server)) {
|
|
goto fail_syntax;
|
|
}
|
|
if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
|
|
goto fail_syntax;
|
|
}
|
|
}
|
|
port = strtol(buf, &end, 10);
|
|
if (*end != '\0' || port < 1 || port > 65535) {
|
|
goto fail_syntax;
|
|
}
|
|
|
|
fwd = g_malloc(sizeof(struct GuestFwd));
|
|
snprintf(buf, sizeof(buf), "guestfwd.tcp.%d", port);
|
|
|
|
if ((strlen(p) > 4) && !strncmp(p, "cmd:", 4)) {
|
|
if (slirp_add_exec(s->slirp, 0, &p[4], &server, port) < 0) {
|
|
error_report("conflicting/invalid host:port in guest forwarding "
|
|
"rule '%s'", config_str);
|
|
g_free(fwd);
|
|
return -1;
|
|
}
|
|
} else {
|
|
fwd->hd = qemu_chr_new(buf, p, NULL);
|
|
if (!fwd->hd) {
|
|
error_report("could not open guest forwarding device '%s'", buf);
|
|
g_free(fwd);
|
|
return -1;
|
|
}
|
|
|
|
if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
|
|
error_report("conflicting/invalid host:port in guest forwarding "
|
|
"rule '%s'", config_str);
|
|
g_free(fwd);
|
|
return -1;
|
|
}
|
|
fwd->server = server;
|
|
fwd->port = port;
|
|
fwd->slirp = s->slirp;
|
|
|
|
qemu_chr_fe_claim_no_fail(fwd->hd);
|
|
qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
|
|
NULL, fwd);
|
|
}
|
|
return 0;
|
|
|
|
fail_syntax:
|
|
error_report("invalid guest forwarding rule '%s'", config_str);
|
|
return -1;
|
|
}
|
|
|
|
void do_info_usernet(Monitor *mon, const QDict *qdict)
|
|
{
|
|
SlirpState *s;
|
|
|
|
QTAILQ_FOREACH(s, &slirp_stacks, entry) {
|
|
int id;
|
|
bool got_vlan_id = net_hub_id_for_client(&s->nc, &id) == 0;
|
|
monitor_printf(mon, "VLAN %d (%s):\n",
|
|
got_vlan_id ? id : -1,
|
|
s->nc.name);
|
|
slirp_connection_info(s->slirp, mon);
|
|
}
|
|
}
|
|
|
|
static void
|
|
net_init_slirp_configs(const StringList *fwd, int flags)
|
|
{
|
|
while (fwd) {
|
|
struct slirp_config_str *config;
|
|
|
|
config = g_malloc0(sizeof(*config));
|
|
pstrcpy(config->str, sizeof(config->str), fwd->value->str);
|
|
config->flags = flags;
|
|
config->next = slirp_configs;
|
|
slirp_configs = config;
|
|
|
|
fwd = fwd->next;
|
|
}
|
|
}
|
|
|
|
static const char **slirp_dnssearch(const StringList *dnsname)
|
|
{
|
|
const StringList *c = dnsname;
|
|
size_t i = 0, num_opts = 0;
|
|
const char **ret;
|
|
|
|
while (c) {
|
|
num_opts++;
|
|
c = c->next;
|
|
}
|
|
|
|
if (num_opts == 0) {
|
|
return NULL;
|
|
}
|
|
|
|
ret = g_malloc((num_opts + 1) * sizeof(*ret));
|
|
c = dnsname;
|
|
while (c) {
|
|
ret[i++] = c->value->str;
|
|
c = c->next;
|
|
}
|
|
ret[i] = NULL;
|
|
return ret;
|
|
}
|
|
|
|
int net_init_slirp(const NetClientOptions *opts, const char *name,
|
|
NetClientState *peer)
|
|
{
|
|
struct slirp_config_str *config;
|
|
char *vnet;
|
|
int ret;
|
|
const NetdevUserOptions *user;
|
|
const char **dnssearch;
|
|
|
|
assert(opts->kind == NET_CLIENT_OPTIONS_KIND_USER);
|
|
user = opts->user;
|
|
|
|
vnet = user->has_net ? g_strdup(user->net) :
|
|
user->has_ip ? g_strdup_printf("%s/24", user->ip) :
|
|
NULL;
|
|
|
|
dnssearch = slirp_dnssearch(user->dnssearch);
|
|
|
|
/* all optional fields are initialized to "all bits zero" */
|
|
|
|
net_init_slirp_configs(user->hostfwd, SLIRP_CFG_HOSTFWD);
|
|
net_init_slirp_configs(user->guestfwd, 0);
|
|
|
|
ret = net_slirp_init(peer, "user", name, user->q_restrict, vnet,
|
|
user->host, user->hostname, user->tftp,
|
|
user->bootfile, user->dhcpstart, user->dns, user->smb,
|
|
user->smbserver, dnssearch);
|
|
|
|
while (slirp_configs) {
|
|
config = slirp_configs;
|
|
slirp_configs = config->next;
|
|
g_free(config);
|
|
}
|
|
|
|
g_free(vnet);
|
|
g_free(dnssearch);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int net_slirp_parse_legacy(QemuOptsList *opts_list, const char *optarg, int *ret)
|
|
{
|
|
if (strcmp(opts_list->name, "net") != 0 ||
|
|
strncmp(optarg, "channel,", strlen("channel,")) != 0) {
|
|
return 0;
|
|
}
|
|
|
|
/* handle legacy -net channel,port:chr */
|
|
optarg += strlen("channel,");
|
|
|
|
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
|
struct slirp_config_str *config;
|
|
|
|
config = g_malloc(sizeof(*config));
|
|
pstrcpy(config->str, sizeof(config->str), optarg);
|
|
config->flags = SLIRP_CFG_LEGACY;
|
|
config->next = slirp_configs;
|
|
slirp_configs = config;
|
|
*ret = 0;
|
|
} else {
|
|
*ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|