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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" |
25 |
|
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#include "config-host.h" |
27 |
|
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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" |
32 |
#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; |
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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; |
42 |
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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|
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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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QTAILQ_ENTRY(SlirpState) entry; |
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VLANClientState *vc; |
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Slirp *slirp; |
70 |
#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; |
78 |
static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
|
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QTAILQ_HEAD_INITIALIZER(slirp_stacks); |
80 |
|
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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; |
88 |
|
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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->vc);
|
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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->vc, pkt, pkt_len); |
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} |
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|
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static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size) |
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{ |
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SlirpState *s = vc->opaque; |
113 |
|
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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 *vc) |
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{ |
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SlirpState *s = vc->opaque; |
122 |
|
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slirp_cleanup(s->slirp); |
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slirp_smb_cleanup(s); |
125 |
QTAILQ_REMOVE(&slirp_stacks, s, entry); |
126 |
qemu_free(s); |
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} |
128 |
|
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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, |
132 |
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) |
136 |
{ |
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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 */ |
139 |
struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */ |
140 |
struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */ |
141 |
struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */ |
142 |
struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */ |
143 |
#ifndef _WIN32
|
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struct in_addr smbsrv = { .s_addr = 0 }; |
145 |
#endif
|
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SlirpState *s; |
147 |
char buf[20]; |
148 |
uint32_t addr; |
149 |
int shift;
|
150 |
char *end;
|
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struct slirp_config_str *config;
|
152 |
|
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if (!tftp_export) {
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tftp_export = legacy_tftp_prefix; |
155 |
} |
156 |
if (!bootfile) {
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bootfile = legacy_bootp_filename; |
158 |
} |
159 |
|
160 |
if (vnetwork) {
|
161 |
if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) { |
162 |
if (!inet_aton(vnetwork, &net)) {
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return -1; |
164 |
} |
165 |
addr = ntohl(net.s_addr); |
166 |
if (!(addr & 0x80000000)) { |
167 |
mask.s_addr = htonl(0xff000000); /* class A */ |
168 |
} else if ((addr & 0xfff00000) == 0xac100000) { |
169 |
mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */ |
170 |
} else if ((addr & 0xc0000000) == 0x80000000) { |
171 |
mask.s_addr = htonl(0xffff0000); /* class B */ |
172 |
} else if ((addr & 0xffff0000) == 0xc0a80000) { |
173 |
mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */ |
174 |
} else if ((addr & 0xffff0000) == 0xc6120000) { |
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mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */ |
176 |
} else if ((addr & 0xe0000000) == 0xe0000000) { |
177 |
mask.s_addr = htonl(0xffffff00); /* class C */ |
178 |
} else {
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mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */ |
180 |
} |
181 |
} else {
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182 |
if (!inet_aton(buf, &net)) {
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return -1; |
184 |
} |
185 |
shift = strtol(vnetwork, &end, 10);
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186 |
if (*end != '\0') { |
187 |
if (!inet_aton(vnetwork, &mask)) {
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188 |
return -1; |
189 |
} |
190 |
} else if (shift < 4 || shift > 32) { |
191 |
return -1; |
192 |
} else {
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mask.s_addr = htonl(0xffffffff << (32 - shift)); |
194 |
} |
195 |
} |
196 |
net.s_addr &= mask.s_addr; |
197 |
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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199 |
dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
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200 |
} |
201 |
|
202 |
if (vhost && !inet_aton(vhost, &host)) {
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203 |
return -1; |
204 |
} |
205 |
if ((host.s_addr & mask.s_addr) != net.s_addr) {
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206 |
return -1; |
207 |
} |
208 |
|
209 |
if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
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210 |
return -1; |
211 |
} |
212 |
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) { |
214 |
return -1; |
215 |
} |
216 |
|
217 |
if (vnameserver && !inet_aton(vnameserver, &dns)) {
|
218 |
return -1; |
219 |
} |
220 |
if ((dns.s_addr & mask.s_addr) != net.s_addr ||
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dns.s_addr == host.s_addr) { |
222 |
return -1; |
223 |
} |
224 |
|
225 |
#ifndef _WIN32
|
226 |
if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
|
227 |
return -1; |
228 |
} |
229 |
#endif
|
230 |
|
231 |
s = qemu_mallocz(sizeof(SlirpState));
|
232 |
s->slirp = slirp_init(restricted, net, mask, host, vhostname, |
233 |
tftp_export, bootfile, dhcp, dns, s); |
234 |
QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry); |
235 |
|
236 |
for (config = slirp_configs; config; config = config->next) {
|
237 |
if (config->flags & SLIRP_CFG_HOSTFWD) {
|
238 |
if (slirp_hostfwd(s, config->str,
|
239 |
config->flags & SLIRP_CFG_LEGACY) < 0)
|
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return -1; |
241 |
} else {
|
242 |
if (slirp_guestfwd(s, config->str,
|
243 |
config->flags & SLIRP_CFG_LEGACY) < 0)
|
244 |
return -1; |
245 |
} |
246 |
} |
247 |
#ifndef _WIN32
|
248 |
if (!smb_export) {
|
249 |
smb_export = legacy_smb_export; |
250 |
} |
251 |
if (smb_export) {
|
252 |
if (slirp_smb(s, smb_export, smbsrv) < 0) |
253 |
return -1; |
254 |
} |
255 |
#endif
|
256 |
|
257 |
s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SLIRP, |
258 |
vlan, NULL, model, name, NULL, |
259 |
slirp_receive, NULL, NULL, |
260 |
net_slirp_cleanup, s); |
261 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
262 |
"net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n'); |
263 |
return 0; |
264 |
} |
265 |
|
266 |
static SlirpState *slirp_lookup(Monitor *mon, const char *vlan, |
267 |
const char *stack) |
268 |
{ |
269 |
VLANClientState *vc; |
270 |
|
271 |
if (vlan) {
|
272 |
vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack); |
273 |
if (!vc) {
|
274 |
return NULL; |
275 |
} |
276 |
if (strcmp(vc->model, "user")) { |
277 |
monitor_printf(mon, "invalid device specified\n");
|
278 |
return NULL; |
279 |
} |
280 |
return vc->opaque;
|
281 |
} else {
|
282 |
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
283 |
monitor_printf(mon, "user mode network stack not in use\n");
|
284 |
return NULL; |
285 |
} |
286 |
return QTAILQ_FIRST(&slirp_stacks);
|
287 |
} |
288 |
} |
289 |
|
290 |
void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict) |
291 |
{ |
292 |
struct in_addr host_addr = { .s_addr = INADDR_ANY };
|
293 |
int host_port;
|
294 |
char buf[256] = ""; |
295 |
const char *src_str, *p; |
296 |
SlirpState *s; |
297 |
int is_udp = 0; |
298 |
int err;
|
299 |
const char *arg1 = qdict_get_str(qdict, "arg1"); |
300 |
const char *arg2 = qdict_get_try_str(qdict, "arg2"); |
301 |
const char *arg3 = qdict_get_try_str(qdict, "arg3"); |
302 |
|
303 |
if (arg2) {
|
304 |
s = slirp_lookup(mon, arg1, arg2); |
305 |
src_str = arg3; |
306 |
} else {
|
307 |
s = slirp_lookup(mon, NULL, NULL); |
308 |
src_str = arg1; |
309 |
} |
310 |
if (!s) {
|
311 |
return;
|
312 |
} |
313 |
|
314 |
if (!src_str || !src_str[0]) |
315 |
goto fail_syntax;
|
316 |
|
317 |
p = src_str; |
318 |
get_str_sep(buf, sizeof(buf), &p, ':'); |
319 |
|
320 |
if (!strcmp(buf, "tcp") || buf[0] == '\0') { |
321 |
is_udp = 0;
|
322 |
} else if (!strcmp(buf, "udp")) { |
323 |
is_udp = 1;
|
324 |
} else {
|
325 |
goto fail_syntax;
|
326 |
} |
327 |
|
328 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
329 |
goto fail_syntax;
|
330 |
} |
331 |
if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { |
332 |
goto fail_syntax;
|
333 |
} |
334 |
|
335 |
host_port = atoi(p); |
336 |
|
337 |
err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp, |
338 |
host_addr, host_port); |
339 |
|
340 |
monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
|
341 |
err ? "removed" : "not found"); |
342 |
return;
|
343 |
|
344 |
fail_syntax:
|
345 |
monitor_printf(mon, "invalid format\n");
|
346 |
} |
347 |
|
348 |
static int slirp_hostfwd(SlirpState *s, const char *redir_str, |
349 |
int legacy_format)
|
350 |
{ |
351 |
struct in_addr host_addr = { .s_addr = INADDR_ANY };
|
352 |
struct in_addr guest_addr = { .s_addr = 0 }; |
353 |
int host_port, guest_port;
|
354 |
const char *p; |
355 |
char buf[256]; |
356 |
int is_udp;
|
357 |
char *end;
|
358 |
|
359 |
p = redir_str; |
360 |
if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
361 |
goto fail_syntax;
|
362 |
} |
363 |
if (!strcmp(buf, "tcp") || buf[0] == '\0') { |
364 |
is_udp = 0;
|
365 |
} else if (!strcmp(buf, "udp")) { |
366 |
is_udp = 1;
|
367 |
} else {
|
368 |
goto fail_syntax;
|
369 |
} |
370 |
|
371 |
if (!legacy_format) {
|
372 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
373 |
goto fail_syntax;
|
374 |
} |
375 |
if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { |
376 |
goto fail_syntax;
|
377 |
} |
378 |
} |
379 |
|
380 |
if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) { |
381 |
goto fail_syntax;
|
382 |
} |
383 |
host_port = strtol(buf, &end, 0);
|
384 |
if (*end != '\0' || host_port < 1 || host_port > 65535) { |
385 |
goto fail_syntax;
|
386 |
} |
387 |
|
388 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
389 |
goto fail_syntax;
|
390 |
} |
391 |
if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) { |
392 |
goto fail_syntax;
|
393 |
} |
394 |
|
395 |
guest_port = strtol(p, &end, 0);
|
396 |
if (*end != '\0' || guest_port < 1 || guest_port > 65535) { |
397 |
goto fail_syntax;
|
398 |
} |
399 |
|
400 |
if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
|
401 |
guest_port) < 0) {
|
402 |
qemu_error("could not set up host forwarding rule '%s'\n",
|
403 |
redir_str); |
404 |
return -1; |
405 |
} |
406 |
return 0; |
407 |
|
408 |
fail_syntax:
|
409 |
qemu_error("invalid host forwarding rule '%s'\n", redir_str);
|
410 |
return -1; |
411 |
} |
412 |
|
413 |
void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict) |
414 |
{ |
415 |
const char *redir_str; |
416 |
SlirpState *s; |
417 |
const char *arg1 = qdict_get_str(qdict, "arg1"); |
418 |
const char *arg2 = qdict_get_try_str(qdict, "arg2"); |
419 |
const char *arg3 = qdict_get_try_str(qdict, "arg3"); |
420 |
|
421 |
if (arg2) {
|
422 |
s = slirp_lookup(mon, arg1, arg2); |
423 |
redir_str = arg3; |
424 |
} else {
|
425 |
s = slirp_lookup(mon, NULL, NULL); |
426 |
redir_str = arg1; |
427 |
} |
428 |
if (s) {
|
429 |
slirp_hostfwd(s, redir_str, 0);
|
430 |
} |
431 |
|
432 |
} |
433 |
|
434 |
int net_slirp_redir(const char *redir_str) |
435 |
{ |
436 |
struct slirp_config_str *config;
|
437 |
|
438 |
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
439 |
config = qemu_malloc(sizeof(*config));
|
440 |
pstrcpy(config->str, sizeof(config->str), redir_str);
|
441 |
config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY; |
442 |
config->next = slirp_configs; |
443 |
slirp_configs = config; |
444 |
return 0; |
445 |
} |
446 |
|
447 |
return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1); |
448 |
} |
449 |
|
450 |
#ifndef _WIN32
|
451 |
|
452 |
/* automatic user mode samba server configuration */
|
453 |
static void slirp_smb_cleanup(SlirpState *s) |
454 |
{ |
455 |
char cmd[128]; |
456 |
|
457 |
if (s->smb_dir[0] != '\0') { |
458 |
snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir); |
459 |
system(cmd); |
460 |
s->smb_dir[0] = '\0'; |
461 |
} |
462 |
} |
463 |
|
464 |
static int slirp_smb(SlirpState* s, const char *exported_dir, |
465 |
struct in_addr vserver_addr)
|
466 |
{ |
467 |
static int instance; |
468 |
char smb_conf[128]; |
469 |
char smb_cmdline[128]; |
470 |
FILE *f; |
471 |
|
472 |
snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d", |
473 |
(long)getpid(), instance++);
|
474 |
if (mkdir(s->smb_dir, 0700) < 0) { |
475 |
qemu_error("could not create samba server dir '%s'\n", s->smb_dir);
|
476 |
return -1; |
477 |
} |
478 |
snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf"); |
479 |
|
480 |
f = fopen(smb_conf, "w");
|
481 |
if (!f) {
|
482 |
slirp_smb_cleanup(s); |
483 |
qemu_error("could not create samba server configuration file '%s'\n",
|
484 |
smb_conf); |
485 |
return -1; |
486 |
} |
487 |
fprintf(f, |
488 |
"[global]\n"
|
489 |
"private dir=%s\n"
|
490 |
"smb ports=0\n"
|
491 |
"socket address=127.0.0.1\n"
|
492 |
"pid directory=%s\n"
|
493 |
"lock directory=%s\n"
|
494 |
"log file=%s/log.smbd\n"
|
495 |
"smb passwd file=%s/smbpasswd\n"
|
496 |
"security = share\n"
|
497 |
"[qemu]\n"
|
498 |
"path=%s\n"
|
499 |
"read only=no\n"
|
500 |
"guest ok=yes\n",
|
501 |
s->smb_dir, |
502 |
s->smb_dir, |
503 |
s->smb_dir, |
504 |
s->smb_dir, |
505 |
s->smb_dir, |
506 |
exported_dir |
507 |
); |
508 |
fclose(f); |
509 |
|
510 |
snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s", |
511 |
SMBD_COMMAND, smb_conf); |
512 |
|
513 |
if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) { |
514 |
slirp_smb_cleanup(s); |
515 |
qemu_error("conflicting/invalid smbserver address\n");
|
516 |
return -1; |
517 |
} |
518 |
return 0; |
519 |
} |
520 |
|
521 |
/* automatic user mode samba server configuration (legacy interface) */
|
522 |
int net_slirp_smb(const char *exported_dir) |
523 |
{ |
524 |
struct in_addr vserver_addr = { .s_addr = 0 }; |
525 |
|
526 |
if (legacy_smb_export) {
|
527 |
fprintf(stderr, "-smb given twice\n");
|
528 |
return -1; |
529 |
} |
530 |
legacy_smb_export = exported_dir; |
531 |
if (!QTAILQ_EMPTY(&slirp_stacks)) {
|
532 |
return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
|
533 |
vserver_addr); |
534 |
} |
535 |
return 0; |
536 |
} |
537 |
|
538 |
#endif /* !defined(_WIN32) */ |
539 |
|
540 |
struct GuestFwd {
|
541 |
CharDriverState *hd; |
542 |
struct in_addr server;
|
543 |
int port;
|
544 |
Slirp *slirp; |
545 |
}; |
546 |
|
547 |
static int guestfwd_can_read(void *opaque) |
548 |
{ |
549 |
struct GuestFwd *fwd = opaque;
|
550 |
return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
|
551 |
} |
552 |
|
553 |
static void guestfwd_read(void *opaque, const uint8_t *buf, int size) |
554 |
{ |
555 |
struct GuestFwd *fwd = opaque;
|
556 |
slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size); |
557 |
} |
558 |
|
559 |
static int slirp_guestfwd(SlirpState *s, const char *config_str, |
560 |
int legacy_format)
|
561 |
{ |
562 |
struct in_addr server = { .s_addr = 0 }; |
563 |
struct GuestFwd *fwd;
|
564 |
const char *p; |
565 |
char buf[128]; |
566 |
char *end;
|
567 |
int port;
|
568 |
|
569 |
p = config_str; |
570 |
if (legacy_format) {
|
571 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
572 |
goto fail_syntax;
|
573 |
} |
574 |
} else {
|
575 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
576 |
goto fail_syntax;
|
577 |
} |
578 |
if (strcmp(buf, "tcp") && buf[0] != '\0') { |
579 |
goto fail_syntax;
|
580 |
} |
581 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
582 |
goto fail_syntax;
|
583 |
} |
584 |
if (buf[0] != '\0' && !inet_aton(buf, &server)) { |
585 |
goto fail_syntax;
|
586 |
} |
587 |
if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { |
588 |
goto fail_syntax;
|
589 |
} |
590 |
} |
591 |
port = strtol(buf, &end, 10);
|
592 |
if (*end != '\0' || port < 1 || port > 65535) { |
593 |
goto fail_syntax;
|
594 |
} |
595 |
|
596 |
fwd = qemu_malloc(sizeof(struct GuestFwd)); |
597 |
snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port); |
598 |
fwd->hd = qemu_chr_open(buf, p, NULL);
|
599 |
if (!fwd->hd) {
|
600 |
qemu_error("could not open guest forwarding device '%s'\n", buf);
|
601 |
qemu_free(fwd); |
602 |
return -1; |
603 |
} |
604 |
|
605 |
if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) { |
606 |
qemu_error("conflicting/invalid host:port in guest forwarding "
|
607 |
"rule '%s'\n", config_str);
|
608 |
qemu_free(fwd); |
609 |
return -1; |
610 |
} |
611 |
fwd->server = server; |
612 |
fwd->port = port; |
613 |
fwd->slirp = s->slirp; |
614 |
|
615 |
qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read, |
616 |
NULL, fwd);
|
617 |
return 0; |
618 |
|
619 |
fail_syntax:
|
620 |
qemu_error("invalid guest forwarding rule '%s'\n", config_str);
|
621 |
return -1; |
622 |
} |
623 |
|
624 |
void do_info_usernet(Monitor *mon)
|
625 |
{ |
626 |
SlirpState *s; |
627 |
|
628 |
QTAILQ_FOREACH(s, &slirp_stacks, entry) { |
629 |
monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
|
630 |
slirp_connection_info(s->slirp, mon); |
631 |
} |
632 |
} |
633 |
|
634 |
static int net_init_slirp_configs(const char *name, const char *value, void *opaque) |
635 |
{ |
636 |
struct slirp_config_str *config;
|
637 |
|
638 |
if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) { |
639 |
return 0; |
640 |
} |
641 |
|
642 |
config = qemu_mallocz(sizeof(*config));
|
643 |
|
644 |
pstrcpy(config->str, sizeof(config->str), value);
|
645 |
|
646 |
if (!strcmp(name, "hostfwd")) { |
647 |
config->flags = SLIRP_CFG_HOSTFWD; |
648 |
} |
649 |
|
650 |
config->next = slirp_configs; |
651 |
slirp_configs = config; |
652 |
|
653 |
return 0; |
654 |
} |
655 |
|
656 |
int net_init_slirp(QemuOpts *opts,
|
657 |
Monitor *mon, |
658 |
const char *name, |
659 |
VLANState *vlan) |
660 |
{ |
661 |
struct slirp_config_str *config;
|
662 |
const char *vhost; |
663 |
const char *vhostname; |
664 |
const char *vdhcp_start; |
665 |
const char *vnamesrv; |
666 |
const char *tftp_export; |
667 |
const char *bootfile; |
668 |
const char *smb_export; |
669 |
const char *vsmbsrv; |
670 |
char *vnet = NULL; |
671 |
int restricted = 0; |
672 |
int ret;
|
673 |
|
674 |
vhost = qemu_opt_get(opts, "host");
|
675 |
vhostname = qemu_opt_get(opts, "hostname");
|
676 |
vdhcp_start = qemu_opt_get(opts, "dhcpstart");
|
677 |
vnamesrv = qemu_opt_get(opts, "dns");
|
678 |
tftp_export = qemu_opt_get(opts, "tftp");
|
679 |
bootfile = qemu_opt_get(opts, "bootfile");
|
680 |
smb_export = qemu_opt_get(opts, "smb");
|
681 |
vsmbsrv = qemu_opt_get(opts, "smbserver");
|
682 |
|
683 |
if (qemu_opt_get(opts, "ip")) { |
684 |
const char *ip = qemu_opt_get(opts, "ip"); |
685 |
int l = strlen(ip) + strlen("/24") + 1; |
686 |
|
687 |
vnet = qemu_malloc(l); |
688 |
|
689 |
/* emulate legacy ip= parameter */
|
690 |
pstrcpy(vnet, l, ip); |
691 |
pstrcat(vnet, l, "/24");
|
692 |
} |
693 |
|
694 |
if (qemu_opt_get(opts, "net")) { |
695 |
if (vnet) {
|
696 |
qemu_free(vnet); |
697 |
} |
698 |
vnet = qemu_strdup(qemu_opt_get(opts, "net"));
|
699 |
} |
700 |
|
701 |
if (qemu_opt_get(opts, "restrict") && |
702 |
qemu_opt_get(opts, "restrict")[0] == 'y') { |
703 |
restricted = 1;
|
704 |
} |
705 |
|
706 |
qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0); |
707 |
|
708 |
ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
|
709 |
vhostname, tftp_export, bootfile, vdhcp_start, |
710 |
vnamesrv, smb_export, vsmbsrv); |
711 |
|
712 |
while (slirp_configs) {
|
713 |
config = slirp_configs; |
714 |
slirp_configs = config->next; |
715 |
qemu_free(config); |
716 |
} |
717 |
|
718 |
if (ret != -1 && vlan) { |
719 |
vlan->nb_host_devs++; |
720 |
} |
721 |
|
722 |
qemu_free(vnet); |
723 |
|
724 |
return ret;
|
725 |
} |
726 |
|
727 |
int net_slirp_parse_legacy(QemuOptsList *opts_list, const char *optarg, int *ret) |
728 |
{ |
729 |
if (strcmp(opts_list->name, "net") != 0 || |
730 |
strncmp(optarg, "channel,", strlen("channel,")) != 0) { |
731 |
return 0; |
732 |
} |
733 |
|
734 |
/* handle legacy -net channel,port:chr */
|
735 |
optarg += strlen("channel,");
|
736 |
|
737 |
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
738 |
struct slirp_config_str *config;
|
739 |
|
740 |
config = qemu_malloc(sizeof(*config));
|
741 |
pstrcpy(config->str, sizeof(config->str), optarg);
|
742 |
config->flags = SLIRP_CFG_LEGACY; |
743 |
config->next = slirp_configs; |
744 |
slirp_configs = config; |
745 |
*ret = 0;
|
746 |
} else {
|
747 |
*ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
|
748 |
} |
749 |
|
750 |
return 1; |
751 |
} |
752 |
|