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/*
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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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|
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#include "config-host.h" |
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|
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#include "net.h" |
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#include "monitor.h" |
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#include "sysemu.h" |
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#include "qemu_socket.h" |
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#include "slirp/libslirp.h" |
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|
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static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) |
| 35 |
{
|
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const char *p, *p1; |
| 37 |
int len;
|
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p = *pp; |
| 39 |
p1 = strchr(p, sep); |
| 40 |
if (!p1)
|
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return -1; |
| 42 |
len = p1 - p; |
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p1++; |
| 44 |
if (buf_size > 0) { |
| 45 |
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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|
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/* slirp network adapter */
|
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|
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#define SLIRP_CFG_HOSTFWD 1 |
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#define SLIRP_CFG_LEGACY 2 |
| 58 |
|
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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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|
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typedef struct SlirpState { |
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VLANClientState 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; |
| 74 |
|
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static struct slirp_config_str *slirp_configs; |
| 76 |
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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|
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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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|
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#ifndef _WIN32
|
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static const char *legacy_smb_export; |
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|
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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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|
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int slirp_can_output(void *opaque) |
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{
|
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SlirpState *s = opaque; |
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|
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return qemu_can_send_packet(&s->nc);
|
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} |
| 102 |
|
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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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|
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qemu_send_packet(&s->nc, pkt, pkt_len); |
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} |
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|
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static ssize_t net_slirp_receive(VLANClientState *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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|
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slirp_input(s->slirp, buf, size); |
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|
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return size;
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} |
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|
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static void net_slirp_cleanup(VLANClientState *nc) |
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{
|
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SlirpState *s = DO_UPCAST(SlirpState, nc, nc); |
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|
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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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|
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static NetClientInfo net_slirp_info = {
|
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.type = NET_CLIENT_TYPE_SLIRP, |
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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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|
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static int net_slirp_init(VLANState *vlan, 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) |
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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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VLANClientState *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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|
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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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|
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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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|
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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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} |
| 215 |
|
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if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
|
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return -1; |
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} |
| 219 |
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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} |
| 223 |
|
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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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} |
| 231 |
|
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#ifndef _WIN32
|
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if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
|
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return -1; |
| 235 |
} |
| 236 |
#endif
|
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|
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nc = qemu_new_net_client(&net_slirp_info, vlan, NULL, model, name);
|
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|
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snprintf(nc->info_str, sizeof(nc->info_str),
|
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"net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n'); |
| 242 |
|
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s = DO_UPCAST(SlirpState, nc, nc); |
| 244 |
|
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s->slirp = slirp_init(restricted, net, mask, host, vhostname, |
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tftp_export, bootfile, dhcp, dns, s); |
| 247 |
QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry); |
| 248 |
|
| 249 |
for (config = slirp_configs; config; config = config->next) {
|
| 250 |
if (config->flags & SLIRP_CFG_HOSTFWD) {
|
| 251 |
if (slirp_hostfwd(s, config->str,
|
| 252 |
config->flags & SLIRP_CFG_LEGACY) < 0)
|
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goto error;
|
| 254 |
} else {
|
| 255 |
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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} |
| 259 |
} |
| 260 |
#ifndef _WIN32
|
| 261 |
if (!smb_export) {
|
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smb_export = legacy_smb_export; |
| 263 |
} |
| 264 |
if (smb_export) {
|
| 265 |
if (slirp_smb(s, smb_export, smbsrv) < 0) |
| 266 |
goto error;
|
| 267 |
} |
| 268 |
#endif
|
| 269 |
|
| 270 |
return 0; |
| 271 |
|
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error:
|
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qemu_del_vlan_client(nc); |
| 274 |
return -1; |
| 275 |
} |
| 276 |
|
| 277 |
static SlirpState *slirp_lookup(Monitor *mon, const char *vlan, |
| 278 |
const char *stack) |
| 279 |
{
|
| 280 |
|
| 281 |
if (vlan) {
|
| 282 |
VLANClientState *nc; |
| 283 |
nc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack); |
| 284 |
if (!nc) {
|
| 285 |
return NULL; |
| 286 |
} |
| 287 |
if (strcmp(nc->model, "user")) { |
| 288 |
monitor_printf(mon, "invalid device specified\n");
|
| 289 |
return NULL; |
| 290 |
} |
| 291 |
return DO_UPCAST(SlirpState, nc, nc);
|
| 292 |
} else {
|
| 293 |
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
| 294 |
monitor_printf(mon, "user mode network stack not in use\n");
|
| 295 |
return NULL; |
| 296 |
} |
| 297 |
return QTAILQ_FIRST(&slirp_stacks);
|
| 298 |
} |
| 299 |
} |
| 300 |
|
| 301 |
void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict) |
| 302 |
{
|
| 303 |
struct in_addr host_addr = { .s_addr = INADDR_ANY };
|
| 304 |
int host_port;
|
| 305 |
char buf[256] = ""; |
| 306 |
const char *src_str, *p; |
| 307 |
SlirpState *s; |
| 308 |
int is_udp = 0; |
| 309 |
int err;
|
| 310 |
const char *arg1 = qdict_get_str(qdict, "arg1"); |
| 311 |
const char *arg2 = qdict_get_try_str(qdict, "arg2"); |
| 312 |
const char *arg3 = qdict_get_try_str(qdict, "arg3"); |
| 313 |
|
| 314 |
if (arg2) {
|
| 315 |
s = slirp_lookup(mon, arg1, arg2); |
| 316 |
src_str = arg3; |
| 317 |
} else {
|
| 318 |
s = slirp_lookup(mon, NULL, NULL); |
| 319 |
src_str = arg1; |
| 320 |
} |
| 321 |
if (!s) {
|
| 322 |
return;
|
| 323 |
} |
| 324 |
|
| 325 |
if (!src_str || !src_str[0]) |
| 326 |
goto fail_syntax;
|
| 327 |
|
| 328 |
p = src_str; |
| 329 |
get_str_sep(buf, sizeof(buf), &p, ':'); |
| 330 |
|
| 331 |
if (!strcmp(buf, "tcp") || buf[0] == '\0') { |
| 332 |
is_udp = 0;
|
| 333 |
} else if (!strcmp(buf, "udp")) { |
| 334 |
is_udp = 1;
|
| 335 |
} else {
|
| 336 |
goto fail_syntax;
|
| 337 |
} |
| 338 |
|
| 339 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
| 340 |
goto fail_syntax;
|
| 341 |
} |
| 342 |
if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { |
| 343 |
goto fail_syntax;
|
| 344 |
} |
| 345 |
|
| 346 |
host_port = atoi(p); |
| 347 |
|
| 348 |
err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp, |
| 349 |
host_addr, host_port); |
| 350 |
|
| 351 |
monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
|
| 352 |
err ? "removed" : "not found"); |
| 353 |
return;
|
| 354 |
|
| 355 |
fail_syntax:
|
| 356 |
monitor_printf(mon, "invalid format\n");
|
| 357 |
} |
| 358 |
|
| 359 |
static int slirp_hostfwd(SlirpState *s, const char *redir_str, |
| 360 |
int legacy_format)
|
| 361 |
{
|
| 362 |
struct in_addr host_addr = { .s_addr = INADDR_ANY };
|
| 363 |
struct in_addr guest_addr = { .s_addr = 0 }; |
| 364 |
int host_port, guest_port;
|
| 365 |
const char *p; |
| 366 |
char buf[256]; |
| 367 |
int is_udp;
|
| 368 |
char *end;
|
| 369 |
|
| 370 |
p = redir_str; |
| 371 |
if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
| 372 |
goto fail_syntax;
|
| 373 |
} |
| 374 |
if (!strcmp(buf, "tcp") || buf[0] == '\0') { |
| 375 |
is_udp = 0;
|
| 376 |
} else if (!strcmp(buf, "udp")) { |
| 377 |
is_udp = 1;
|
| 378 |
} else {
|
| 379 |
goto fail_syntax;
|
| 380 |
} |
| 381 |
|
| 382 |
if (!legacy_format) {
|
| 383 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
| 384 |
goto fail_syntax;
|
| 385 |
} |
| 386 |
if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { |
| 387 |
goto fail_syntax;
|
| 388 |
} |
| 389 |
} |
| 390 |
|
| 391 |
if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) { |
| 392 |
goto fail_syntax;
|
| 393 |
} |
| 394 |
host_port = strtol(buf, &end, 0);
|
| 395 |
if (*end != '\0' || host_port < 1 || host_port > 65535) { |
| 396 |
goto fail_syntax;
|
| 397 |
} |
| 398 |
|
| 399 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
| 400 |
goto fail_syntax;
|
| 401 |
} |
| 402 |
if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) { |
| 403 |
goto fail_syntax;
|
| 404 |
} |
| 405 |
|
| 406 |
guest_port = strtol(p, &end, 0);
|
| 407 |
if (*end != '\0' || guest_port < 1 || guest_port > 65535) { |
| 408 |
goto fail_syntax;
|
| 409 |
} |
| 410 |
|
| 411 |
if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
|
| 412 |
guest_port) < 0) {
|
| 413 |
qemu_error("could not set up host forwarding rule '%s'\n",
|
| 414 |
redir_str); |
| 415 |
return -1; |
| 416 |
} |
| 417 |
return 0; |
| 418 |
|
| 419 |
fail_syntax:
|
| 420 |
qemu_error("invalid host forwarding rule '%s'\n", redir_str);
|
| 421 |
return -1; |
| 422 |
} |
| 423 |
|
| 424 |
void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict) |
| 425 |
{
|
| 426 |
const char *redir_str; |
| 427 |
SlirpState *s; |
| 428 |
const char *arg1 = qdict_get_str(qdict, "arg1"); |
| 429 |
const char *arg2 = qdict_get_try_str(qdict, "arg2"); |
| 430 |
const char *arg3 = qdict_get_try_str(qdict, "arg3"); |
| 431 |
|
| 432 |
if (arg2) {
|
| 433 |
s = slirp_lookup(mon, arg1, arg2); |
| 434 |
redir_str = arg3; |
| 435 |
} else {
|
| 436 |
s = slirp_lookup(mon, NULL, NULL); |
| 437 |
redir_str = arg1; |
| 438 |
} |
| 439 |
if (s) {
|
| 440 |
slirp_hostfwd(s, redir_str, 0);
|
| 441 |
} |
| 442 |
|
| 443 |
} |
| 444 |
|
| 445 |
int net_slirp_redir(const char *redir_str) |
| 446 |
{
|
| 447 |
struct slirp_config_str *config;
|
| 448 |
|
| 449 |
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
| 450 |
config = qemu_malloc(sizeof(*config));
|
| 451 |
pstrcpy(config->str, sizeof(config->str), redir_str);
|
| 452 |
config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY; |
| 453 |
config->next = slirp_configs; |
| 454 |
slirp_configs = config; |
| 455 |
return 0; |
| 456 |
} |
| 457 |
|
| 458 |
return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1); |
| 459 |
} |
| 460 |
|
| 461 |
#ifndef _WIN32
|
| 462 |
|
| 463 |
/* automatic user mode samba server configuration */
|
| 464 |
static void slirp_smb_cleanup(SlirpState *s) |
| 465 |
{
|
| 466 |
char cmd[128]; |
| 467 |
int ret;
|
| 468 |
|
| 469 |
if (s->smb_dir[0] != '\0') { |
| 470 |
snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir); |
| 471 |
ret = system(cmd); |
| 472 |
if (!WIFEXITED(ret)) {
|
| 473 |
qemu_error("'%s' failed.\n", cmd);
|
| 474 |
} else if (WEXITSTATUS(ret)) { |
| 475 |
qemu_error("'%s' failed. Error code: %d\n",
|
| 476 |
cmd, WEXITSTATUS(ret)); |
| 477 |
} |
| 478 |
s->smb_dir[0] = '\0'; |
| 479 |
} |
| 480 |
} |
| 481 |
|
| 482 |
static int slirp_smb(SlirpState* s, const char *exported_dir, |
| 483 |
struct in_addr vserver_addr)
|
| 484 |
{
|
| 485 |
static int instance; |
| 486 |
char smb_conf[128]; |
| 487 |
char smb_cmdline[128]; |
| 488 |
FILE *f; |
| 489 |
|
| 490 |
snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d", |
| 491 |
(long)getpid(), instance++);
|
| 492 |
if (mkdir(s->smb_dir, 0700) < 0) { |
| 493 |
qemu_error("could not create samba server dir '%s'\n", s->smb_dir);
|
| 494 |
return -1; |
| 495 |
} |
| 496 |
snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf"); |
| 497 |
|
| 498 |
f = fopen(smb_conf, "w");
|
| 499 |
if (!f) {
|
| 500 |
slirp_smb_cleanup(s); |
| 501 |
qemu_error("could not create samba server configuration file '%s'\n",
|
| 502 |
smb_conf); |
| 503 |
return -1; |
| 504 |
} |
| 505 |
fprintf(f, |
| 506 |
"[global]\n"
|
| 507 |
"private dir=%s\n"
|
| 508 |
"smb ports=0\n"
|
| 509 |
"socket address=127.0.0.1\n"
|
| 510 |
"pid directory=%s\n"
|
| 511 |
"lock directory=%s\n"
|
| 512 |
"log file=%s/log.smbd\n"
|
| 513 |
"smb passwd file=%s/smbpasswd\n"
|
| 514 |
"security = share\n"
|
| 515 |
"[qemu]\n"
|
| 516 |
"path=%s\n"
|
| 517 |
"read only=no\n"
|
| 518 |
"guest ok=yes\n",
|
| 519 |
s->smb_dir, |
| 520 |
s->smb_dir, |
| 521 |
s->smb_dir, |
| 522 |
s->smb_dir, |
| 523 |
s->smb_dir, |
| 524 |
exported_dir |
| 525 |
); |
| 526 |
fclose(f); |
| 527 |
|
| 528 |
snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s", |
| 529 |
SMBD_COMMAND, smb_conf); |
| 530 |
|
| 531 |
if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) { |
| 532 |
slirp_smb_cleanup(s); |
| 533 |
qemu_error("conflicting/invalid smbserver address\n");
|
| 534 |
return -1; |
| 535 |
} |
| 536 |
return 0; |
| 537 |
} |
| 538 |
|
| 539 |
/* automatic user mode samba server configuration (legacy interface) */
|
| 540 |
int net_slirp_smb(const char *exported_dir) |
| 541 |
{
|
| 542 |
struct in_addr vserver_addr = { .s_addr = 0 }; |
| 543 |
|
| 544 |
if (legacy_smb_export) {
|
| 545 |
fprintf(stderr, "-smb given twice\n");
|
| 546 |
return -1; |
| 547 |
} |
| 548 |
legacy_smb_export = exported_dir; |
| 549 |
if (!QTAILQ_EMPTY(&slirp_stacks)) {
|
| 550 |
return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
|
| 551 |
vserver_addr); |
| 552 |
} |
| 553 |
return 0; |
| 554 |
} |
| 555 |
|
| 556 |
#endif /* !defined(_WIN32) */ |
| 557 |
|
| 558 |
struct GuestFwd {
|
| 559 |
CharDriverState *hd; |
| 560 |
struct in_addr server;
|
| 561 |
int port;
|
| 562 |
Slirp *slirp; |
| 563 |
}; |
| 564 |
|
| 565 |
static int guestfwd_can_read(void *opaque) |
| 566 |
{
|
| 567 |
struct GuestFwd *fwd = opaque;
|
| 568 |
return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
|
| 569 |
} |
| 570 |
|
| 571 |
static void guestfwd_read(void *opaque, const uint8_t *buf, int size) |
| 572 |
{
|
| 573 |
struct GuestFwd *fwd = opaque;
|
| 574 |
slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size); |
| 575 |
} |
| 576 |
|
| 577 |
static int slirp_guestfwd(SlirpState *s, const char *config_str, |
| 578 |
int legacy_format)
|
| 579 |
{
|
| 580 |
struct in_addr server = { .s_addr = 0 }; |
| 581 |
struct GuestFwd *fwd;
|
| 582 |
const char *p; |
| 583 |
char buf[128]; |
| 584 |
char *end;
|
| 585 |
int port;
|
| 586 |
|
| 587 |
p = config_str; |
| 588 |
if (legacy_format) {
|
| 589 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
| 590 |
goto fail_syntax;
|
| 591 |
} |
| 592 |
} else {
|
| 593 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
| 594 |
goto fail_syntax;
|
| 595 |
} |
| 596 |
if (strcmp(buf, "tcp") && buf[0] != '\0') { |
| 597 |
goto fail_syntax;
|
| 598 |
} |
| 599 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
| 600 |
goto fail_syntax;
|
| 601 |
} |
| 602 |
if (buf[0] != '\0' && !inet_aton(buf, &server)) { |
| 603 |
goto fail_syntax;
|
| 604 |
} |
| 605 |
if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { |
| 606 |
goto fail_syntax;
|
| 607 |
} |
| 608 |
} |
| 609 |
port = strtol(buf, &end, 10);
|
| 610 |
if (*end != '\0' || port < 1 || port > 65535) { |
| 611 |
goto fail_syntax;
|
| 612 |
} |
| 613 |
|
| 614 |
fwd = qemu_malloc(sizeof(struct GuestFwd)); |
| 615 |
snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port); |
| 616 |
fwd->hd = qemu_chr_open(buf, p, NULL);
|
| 617 |
if (!fwd->hd) {
|
| 618 |
qemu_error("could not open guest forwarding device '%s'\n", buf);
|
| 619 |
qemu_free(fwd); |
| 620 |
return -1; |
| 621 |
} |
| 622 |
|
| 623 |
if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) { |
| 624 |
qemu_error("conflicting/invalid host:port in guest forwarding "
|
| 625 |
"rule '%s'\n", config_str);
|
| 626 |
qemu_free(fwd); |
| 627 |
return -1; |
| 628 |
} |
| 629 |
fwd->server = server; |
| 630 |
fwd->port = port; |
| 631 |
fwd->slirp = s->slirp; |
| 632 |
|
| 633 |
qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read, |
| 634 |
NULL, fwd);
|
| 635 |
return 0; |
| 636 |
|
| 637 |
fail_syntax:
|
| 638 |
qemu_error("invalid guest forwarding rule '%s'\n", config_str);
|
| 639 |
return -1; |
| 640 |
} |
| 641 |
|
| 642 |
void do_info_usernet(Monitor *mon)
|
| 643 |
{
|
| 644 |
SlirpState *s; |
| 645 |
|
| 646 |
QTAILQ_FOREACH(s, &slirp_stacks, entry) {
|
| 647 |
monitor_printf(mon, "VLAN %d (%s):\n",
|
| 648 |
s->nc.vlan ? s->nc.vlan->id : -1,
|
| 649 |
s->nc.name); |
| 650 |
slirp_connection_info(s->slirp, mon); |
| 651 |
} |
| 652 |
} |
| 653 |
|
| 654 |
static int net_init_slirp_configs(const char *name, const char *value, void *opaque) |
| 655 |
{
|
| 656 |
struct slirp_config_str *config;
|
| 657 |
|
| 658 |
if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) { |
| 659 |
return 0; |
| 660 |
} |
| 661 |
|
| 662 |
config = qemu_mallocz(sizeof(*config));
|
| 663 |
|
| 664 |
pstrcpy(config->str, sizeof(config->str), value);
|
| 665 |
|
| 666 |
if (!strcmp(name, "hostfwd")) { |
| 667 |
config->flags = SLIRP_CFG_HOSTFWD; |
| 668 |
} |
| 669 |
|
| 670 |
config->next = slirp_configs; |
| 671 |
slirp_configs = config; |
| 672 |
|
| 673 |
return 0; |
| 674 |
} |
| 675 |
|
| 676 |
int net_init_slirp(QemuOpts *opts,
|
| 677 |
Monitor *mon, |
| 678 |
const char *name, |
| 679 |
VLANState *vlan) |
| 680 |
{
|
| 681 |
struct slirp_config_str *config;
|
| 682 |
const char *vhost; |
| 683 |
const char *vhostname; |
| 684 |
const char *vdhcp_start; |
| 685 |
const char *vnamesrv; |
| 686 |
const char *tftp_export; |
| 687 |
const char *bootfile; |
| 688 |
const char *smb_export; |
| 689 |
const char *vsmbsrv; |
| 690 |
char *vnet = NULL; |
| 691 |
int restricted = 0; |
| 692 |
int ret;
|
| 693 |
|
| 694 |
vhost = qemu_opt_get(opts, "host");
|
| 695 |
vhostname = qemu_opt_get(opts, "hostname");
|
| 696 |
vdhcp_start = qemu_opt_get(opts, "dhcpstart");
|
| 697 |
vnamesrv = qemu_opt_get(opts, "dns");
|
| 698 |
tftp_export = qemu_opt_get(opts, "tftp");
|
| 699 |
bootfile = qemu_opt_get(opts, "bootfile");
|
| 700 |
smb_export = qemu_opt_get(opts, "smb");
|
| 701 |
vsmbsrv = qemu_opt_get(opts, "smbserver");
|
| 702 |
|
| 703 |
if (qemu_opt_get(opts, "ip")) { |
| 704 |
const char *ip = qemu_opt_get(opts, "ip"); |
| 705 |
int l = strlen(ip) + strlen("/24") + 1; |
| 706 |
|
| 707 |
vnet = qemu_malloc(l); |
| 708 |
|
| 709 |
/* emulate legacy ip= parameter */
|
| 710 |
pstrcpy(vnet, l, ip); |
| 711 |
pstrcat(vnet, l, "/24");
|
| 712 |
} |
| 713 |
|
| 714 |
if (qemu_opt_get(opts, "net")) { |
| 715 |
if (vnet) {
|
| 716 |
qemu_free(vnet); |
| 717 |
} |
| 718 |
vnet = qemu_strdup(qemu_opt_get(opts, "net"));
|
| 719 |
} |
| 720 |
|
| 721 |
if (qemu_opt_get(opts, "restrict") && |
| 722 |
qemu_opt_get(opts, "restrict")[0] == 'y') { |
| 723 |
restricted = 1;
|
| 724 |
} |
| 725 |
|
| 726 |
qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0); |
| 727 |
|
| 728 |
ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
|
| 729 |
vhostname, tftp_export, bootfile, vdhcp_start, |
| 730 |
vnamesrv, smb_export, vsmbsrv); |
| 731 |
|
| 732 |
while (slirp_configs) {
|
| 733 |
config = slirp_configs; |
| 734 |
slirp_configs = config->next; |
| 735 |
qemu_free(config); |
| 736 |
} |
| 737 |
|
| 738 |
if (ret != -1 && vlan) { |
| 739 |
vlan->nb_host_devs++; |
| 740 |
} |
| 741 |
|
| 742 |
qemu_free(vnet); |
| 743 |
|
| 744 |
return ret;
|
| 745 |
} |
| 746 |
|
| 747 |
int net_slirp_parse_legacy(QemuOptsList *opts_list, const char *optarg, int *ret) |
| 748 |
{
|
| 749 |
if (strcmp(opts_list->name, "net") != 0 || |
| 750 |
strncmp(optarg, "channel,", strlen("channel,")) != 0) { |
| 751 |
return 0; |
| 752 |
} |
| 753 |
|
| 754 |
/* handle legacy -net channel,port:chr */
|
| 755 |
optarg += strlen("channel,");
|
| 756 |
|
| 757 |
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
| 758 |
struct slirp_config_str *config;
|
| 759 |
|
| 760 |
config = qemu_malloc(sizeof(*config));
|
| 761 |
pstrcpy(config->str, sizeof(config->str), optarg);
|
| 762 |
config->flags = SLIRP_CFG_LEGACY; |
| 763 |
config->next = slirp_configs; |
| 764 |
slirp_configs = config; |
| 765 |
*ret = 0;
|
| 766 |
} else {
|
| 767 |
*ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
|
| 768 |
} |
| 769 |
|
| 770 |
return 1; |
| 771 |
} |
| 772 |
|