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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" |
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|
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#ifndef _WIN32
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#include <sys/wait.h> |
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#endif
|
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#include "net.h" |
32 |
#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) |
38 |
{ |
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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); |
43 |
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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|
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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 |
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|
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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; |
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|
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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); |
83 |
|
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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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} |
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|
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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); |
125 |
|
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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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}; |
137 |
|
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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) |
145 |
{ |
146 |
/* default settings according to historic slirp */
|
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struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */ |
148 |
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]; |
158 |
uint32_t addr; |
159 |
int shift;
|
160 |
char *end;
|
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struct slirp_config_str *config;
|
162 |
|
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if (!tftp_export) {
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tftp_export = legacy_tftp_prefix; |
165 |
} |
166 |
if (!bootfile) {
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bootfile = legacy_bootp_filename; |
168 |
} |
169 |
|
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if (vnetwork) {
|
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if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) { |
172 |
if (!inet_aton(vnetwork, &net)) {
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return -1; |
174 |
} |
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addr = ntohl(net.s_addr); |
176 |
if (!(addr & 0x80000000)) { |
177 |
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 */ |
180 |
} else if ((addr & 0xc0000000) == 0x80000000) { |
181 |
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 */ |
184 |
} else if ((addr & 0xffff0000) == 0xc6120000) { |
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mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */ |
186 |
} else if ((addr & 0xe0000000) == 0xe0000000) { |
187 |
mask.s_addr = htonl(0xffffff00); /* class C */ |
188 |
} else {
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mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */ |
190 |
} |
191 |
} else {
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if (!inet_aton(buf, &net)) {
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return -1; |
194 |
} |
195 |
shift = strtol(vnetwork, &end, 10);
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if (*end != '\0') { |
197 |
if (!inet_aton(vnetwork, &mask)) {
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return -1; |
199 |
} |
200 |
} else if (shift < 4 || shift > 32) { |
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return -1; |
202 |
} 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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} |
211 |
|
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if (vhost && !inet_aton(vhost, &host)) {
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return -1; |
214 |
} |
215 |
if ((host.s_addr & mask.s_addr) != net.s_addr) {
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return -1; |
217 |
} |
218 |
|
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if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
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return -1; |
221 |
} |
222 |
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) { |
224 |
return -1; |
225 |
} |
226 |
|
227 |
if (vnameserver && !inet_aton(vnameserver, &dns)) {
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return -1; |
229 |
} |
230 |
if ((dns.s_addr & mask.s_addr) != net.s_addr ||
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dns.s_addr == host.s_addr) { |
232 |
return -1; |
233 |
} |
234 |
|
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#ifndef _WIN32
|
236 |
if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
|
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return -1; |
238 |
} |
239 |
#endif
|
240 |
|
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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'); |
245 |
|
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s = DO_UPCAST(SlirpState, nc, nc); |
247 |
|
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s->slirp = slirp_init(restricted, net, mask, host, vhostname, |
249 |
tftp_export, bootfile, dhcp, dns, s); |
250 |
QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry); |
251 |
|
252 |
for (config = slirp_configs; config; config = config->next) {
|
253 |
if (config->flags & SLIRP_CFG_HOSTFWD) {
|
254 |
if (slirp_hostfwd(s, config->str,
|
255 |
config->flags & SLIRP_CFG_LEGACY) < 0)
|
256 |
goto error;
|
257 |
} else {
|
258 |
if (slirp_guestfwd(s, config->str,
|
259 |
config->flags & SLIRP_CFG_LEGACY) < 0)
|
260 |
goto error;
|
261 |
} |
262 |
} |
263 |
#ifndef _WIN32
|
264 |
if (!smb_export) {
|
265 |
smb_export = legacy_smb_export; |
266 |
} |
267 |
if (smb_export) {
|
268 |
if (slirp_smb(s, smb_export, smbsrv) < 0) |
269 |
goto error;
|
270 |
} |
271 |
#endif
|
272 |
|
273 |
return 0; |
274 |
|
275 |
error:
|
276 |
qemu_del_vlan_client(nc); |
277 |
return -1; |
278 |
} |
279 |
|
280 |
static SlirpState *slirp_lookup(Monitor *mon, const char *vlan, |
281 |
const char *stack) |
282 |
{ |
283 |
|
284 |
if (vlan) {
|
285 |
VLANClientState *nc; |
286 |
nc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack); |
287 |
if (!nc) {
|
288 |
return NULL; |
289 |
} |
290 |
if (strcmp(nc->model, "user")) { |
291 |
monitor_printf(mon, "invalid device specified\n");
|
292 |
return NULL; |
293 |
} |
294 |
return DO_UPCAST(SlirpState, nc, nc);
|
295 |
} else {
|
296 |
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
297 |
monitor_printf(mon, "user mode network stack not in use\n");
|
298 |
return NULL; |
299 |
} |
300 |
return QTAILQ_FIRST(&slirp_stacks);
|
301 |
} |
302 |
} |
303 |
|
304 |
void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict) |
305 |
{ |
306 |
struct in_addr host_addr = { .s_addr = INADDR_ANY };
|
307 |
int host_port;
|
308 |
char buf[256] = ""; |
309 |
const char *src_str, *p; |
310 |
SlirpState *s; |
311 |
int is_udp = 0; |
312 |
int err;
|
313 |
const char *arg1 = qdict_get_str(qdict, "arg1"); |
314 |
const char *arg2 = qdict_get_try_str(qdict, "arg2"); |
315 |
const char *arg3 = qdict_get_try_str(qdict, "arg3"); |
316 |
|
317 |
if (arg2) {
|
318 |
s = slirp_lookup(mon, arg1, arg2); |
319 |
src_str = arg3; |
320 |
} else {
|
321 |
s = slirp_lookup(mon, NULL, NULL); |
322 |
src_str = arg1; |
323 |
} |
324 |
if (!s) {
|
325 |
return;
|
326 |
} |
327 |
|
328 |
if (!src_str || !src_str[0]) |
329 |
goto fail_syntax;
|
330 |
|
331 |
p = src_str; |
332 |
get_str_sep(buf, sizeof(buf), &p, ':'); |
333 |
|
334 |
if (!strcmp(buf, "tcp") || buf[0] == '\0') { |
335 |
is_udp = 0;
|
336 |
} else if (!strcmp(buf, "udp")) { |
337 |
is_udp = 1;
|
338 |
} else {
|
339 |
goto fail_syntax;
|
340 |
} |
341 |
|
342 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
343 |
goto fail_syntax;
|
344 |
} |
345 |
if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { |
346 |
goto fail_syntax;
|
347 |
} |
348 |
|
349 |
host_port = atoi(p); |
350 |
|
351 |
err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp, |
352 |
host_addr, host_port); |
353 |
|
354 |
monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
|
355 |
err ? "removed" : "not found"); |
356 |
return;
|
357 |
|
358 |
fail_syntax:
|
359 |
monitor_printf(mon, "invalid format\n");
|
360 |
} |
361 |
|
362 |
static int slirp_hostfwd(SlirpState *s, const char *redir_str, |
363 |
int legacy_format)
|
364 |
{ |
365 |
struct in_addr host_addr = { .s_addr = INADDR_ANY };
|
366 |
struct in_addr guest_addr = { .s_addr = 0 }; |
367 |
int host_port, guest_port;
|
368 |
const char *p; |
369 |
char buf[256]; |
370 |
int is_udp;
|
371 |
char *end;
|
372 |
|
373 |
p = redir_str; |
374 |
if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
375 |
goto fail_syntax;
|
376 |
} |
377 |
if (!strcmp(buf, "tcp") || buf[0] == '\0') { |
378 |
is_udp = 0;
|
379 |
} else if (!strcmp(buf, "udp")) { |
380 |
is_udp = 1;
|
381 |
} else {
|
382 |
goto fail_syntax;
|
383 |
} |
384 |
|
385 |
if (!legacy_format) {
|
386 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
387 |
goto fail_syntax;
|
388 |
} |
389 |
if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { |
390 |
goto fail_syntax;
|
391 |
} |
392 |
} |
393 |
|
394 |
if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) { |
395 |
goto fail_syntax;
|
396 |
} |
397 |
host_port = strtol(buf, &end, 0);
|
398 |
if (*end != '\0' || host_port < 1 || host_port > 65535) { |
399 |
goto fail_syntax;
|
400 |
} |
401 |
|
402 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
403 |
goto fail_syntax;
|
404 |
} |
405 |
if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) { |
406 |
goto fail_syntax;
|
407 |
} |
408 |
|
409 |
guest_port = strtol(p, &end, 0);
|
410 |
if (*end != '\0' || guest_port < 1 || guest_port > 65535) { |
411 |
goto fail_syntax;
|
412 |
} |
413 |
|
414 |
if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
|
415 |
guest_port) < 0) {
|
416 |
error_report("could not set up host forwarding rule '%s'",
|
417 |
redir_str); |
418 |
return -1; |
419 |
} |
420 |
return 0; |
421 |
|
422 |
fail_syntax:
|
423 |
error_report("invalid host forwarding rule '%s'", redir_str);
|
424 |
return -1; |
425 |
} |
426 |
|
427 |
void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict) |
428 |
{ |
429 |
const char *redir_str; |
430 |
SlirpState *s; |
431 |
const char *arg1 = qdict_get_str(qdict, "arg1"); |
432 |
const char *arg2 = qdict_get_try_str(qdict, "arg2"); |
433 |
const char *arg3 = qdict_get_try_str(qdict, "arg3"); |
434 |
|
435 |
if (arg2) {
|
436 |
s = slirp_lookup(mon, arg1, arg2); |
437 |
redir_str = arg3; |
438 |
} else {
|
439 |
s = slirp_lookup(mon, NULL, NULL); |
440 |
redir_str = arg1; |
441 |
} |
442 |
if (s) {
|
443 |
slirp_hostfwd(s, redir_str, 0);
|
444 |
} |
445 |
|
446 |
} |
447 |
|
448 |
int net_slirp_redir(const char *redir_str) |
449 |
{ |
450 |
struct slirp_config_str *config;
|
451 |
|
452 |
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
453 |
config = qemu_malloc(sizeof(*config));
|
454 |
pstrcpy(config->str, sizeof(config->str), redir_str);
|
455 |
config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY; |
456 |
config->next = slirp_configs; |
457 |
slirp_configs = config; |
458 |
return 0; |
459 |
} |
460 |
|
461 |
return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1); |
462 |
} |
463 |
|
464 |
#ifndef _WIN32
|
465 |
|
466 |
/* automatic user mode samba server configuration */
|
467 |
static void slirp_smb_cleanup(SlirpState *s) |
468 |
{ |
469 |
char cmd[128]; |
470 |
int ret;
|
471 |
|
472 |
if (s->smb_dir[0] != '\0') { |
473 |
snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir); |
474 |
ret = system(cmd); |
475 |
if (ret == -1 || !WIFEXITED(ret)) { |
476 |
error_report("'%s' failed.", cmd);
|
477 |
} else if (WEXITSTATUS(ret)) { |
478 |
error_report("'%s' failed. Error code: %d",
|
479 |
cmd, WEXITSTATUS(ret)); |
480 |
} |
481 |
s->smb_dir[0] = '\0'; |
482 |
} |
483 |
} |
484 |
|
485 |
static int slirp_smb(SlirpState* s, const char *exported_dir, |
486 |
struct in_addr vserver_addr)
|
487 |
{ |
488 |
static int instance; |
489 |
char smb_conf[128]; |
490 |
char smb_cmdline[128]; |
491 |
FILE *f; |
492 |
|
493 |
snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d", |
494 |
(long)getpid(), instance++);
|
495 |
if (mkdir(s->smb_dir, 0700) < 0) { |
496 |
error_report("could not create samba server dir '%s'", s->smb_dir);
|
497 |
return -1; |
498 |
} |
499 |
snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf"); |
500 |
|
501 |
f = fopen(smb_conf, "w");
|
502 |
if (!f) {
|
503 |
slirp_smb_cleanup(s); |
504 |
error_report("could not create samba server configuration file '%s'",
|
505 |
smb_conf); |
506 |
return -1; |
507 |
} |
508 |
fprintf(f, |
509 |
"[global]\n"
|
510 |
"private dir=%s\n"
|
511 |
"smb ports=0\n"
|
512 |
"socket address=127.0.0.1\n"
|
513 |
"pid directory=%s\n"
|
514 |
"lock directory=%s\n"
|
515 |
"log file=%s/log.smbd\n"
|
516 |
"smb passwd file=%s/smbpasswd\n"
|
517 |
"security = share\n"
|
518 |
"[qemu]\n"
|
519 |
"path=%s\n"
|
520 |
"read only=no\n"
|
521 |
"guest ok=yes\n",
|
522 |
s->smb_dir, |
523 |
s->smb_dir, |
524 |
s->smb_dir, |
525 |
s->smb_dir, |
526 |
s->smb_dir, |
527 |
exported_dir |
528 |
); |
529 |
fclose(f); |
530 |
|
531 |
snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s", |
532 |
SMBD_COMMAND, smb_conf); |
533 |
|
534 |
if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) { |
535 |
slirp_smb_cleanup(s); |
536 |
error_report("conflicting/invalid smbserver address");
|
537 |
return -1; |
538 |
} |
539 |
return 0; |
540 |
} |
541 |
|
542 |
/* automatic user mode samba server configuration (legacy interface) */
|
543 |
int net_slirp_smb(const char *exported_dir) |
544 |
{ |
545 |
struct in_addr vserver_addr = { .s_addr = 0 }; |
546 |
|
547 |
if (legacy_smb_export) {
|
548 |
fprintf(stderr, "-smb given twice\n");
|
549 |
return -1; |
550 |
} |
551 |
legacy_smb_export = exported_dir; |
552 |
if (!QTAILQ_EMPTY(&slirp_stacks)) {
|
553 |
return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
|
554 |
vserver_addr); |
555 |
} |
556 |
return 0; |
557 |
} |
558 |
|
559 |
#endif /* !defined(_WIN32) */ |
560 |
|
561 |
struct GuestFwd {
|
562 |
CharDriverState *hd; |
563 |
struct in_addr server;
|
564 |
int port;
|
565 |
Slirp *slirp; |
566 |
}; |
567 |
|
568 |
static int guestfwd_can_read(void *opaque) |
569 |
{ |
570 |
struct GuestFwd *fwd = opaque;
|
571 |
return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
|
572 |
} |
573 |
|
574 |
static void guestfwd_read(void *opaque, const uint8_t *buf, int size) |
575 |
{ |
576 |
struct GuestFwd *fwd = opaque;
|
577 |
slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size); |
578 |
} |
579 |
|
580 |
static int slirp_guestfwd(SlirpState *s, const char *config_str, |
581 |
int legacy_format)
|
582 |
{ |
583 |
struct in_addr server = { .s_addr = 0 }; |
584 |
struct GuestFwd *fwd;
|
585 |
const char *p; |
586 |
char buf[128]; |
587 |
char *end;
|
588 |
int port;
|
589 |
|
590 |
p = config_str; |
591 |
if (legacy_format) {
|
592 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
593 |
goto fail_syntax;
|
594 |
} |
595 |
} else {
|
596 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
597 |
goto fail_syntax;
|
598 |
} |
599 |
if (strcmp(buf, "tcp") && buf[0] != '\0') { |
600 |
goto fail_syntax;
|
601 |
} |
602 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
603 |
goto fail_syntax;
|
604 |
} |
605 |
if (buf[0] != '\0' && !inet_aton(buf, &server)) { |
606 |
goto fail_syntax;
|
607 |
} |
608 |
if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { |
609 |
goto fail_syntax;
|
610 |
} |
611 |
} |
612 |
port = strtol(buf, &end, 10);
|
613 |
if (*end != '\0' || port < 1 || port > 65535) { |
614 |
goto fail_syntax;
|
615 |
} |
616 |
|
617 |
fwd = qemu_malloc(sizeof(struct GuestFwd)); |
618 |
snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port); |
619 |
fwd->hd = qemu_chr_open(buf, p, NULL);
|
620 |
if (!fwd->hd) {
|
621 |
error_report("could not open guest forwarding device '%s'", buf);
|
622 |
qemu_free(fwd); |
623 |
return -1; |
624 |
} |
625 |
|
626 |
if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) { |
627 |
error_report("conflicting/invalid host:port in guest forwarding "
|
628 |
"rule '%s'", config_str);
|
629 |
qemu_free(fwd); |
630 |
return -1; |
631 |
} |
632 |
fwd->server = server; |
633 |
fwd->port = port; |
634 |
fwd->slirp = s->slirp; |
635 |
|
636 |
qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read, |
637 |
NULL, fwd);
|
638 |
return 0; |
639 |
|
640 |
fail_syntax:
|
641 |
error_report("invalid guest forwarding rule '%s'", config_str);
|
642 |
return -1; |
643 |
} |
644 |
|
645 |
void do_info_usernet(Monitor *mon)
|
646 |
{ |
647 |
SlirpState *s; |
648 |
|
649 |
QTAILQ_FOREACH(s, &slirp_stacks, entry) { |
650 |
monitor_printf(mon, "VLAN %d (%s):\n",
|
651 |
s->nc.vlan ? s->nc.vlan->id : -1,
|
652 |
s->nc.name); |
653 |
slirp_connection_info(s->slirp, mon); |
654 |
} |
655 |
} |
656 |
|
657 |
static int net_init_slirp_configs(const char *name, const char *value, void *opaque) |
658 |
{ |
659 |
struct slirp_config_str *config;
|
660 |
|
661 |
if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) { |
662 |
return 0; |
663 |
} |
664 |
|
665 |
config = qemu_mallocz(sizeof(*config));
|
666 |
|
667 |
pstrcpy(config->str, sizeof(config->str), value);
|
668 |
|
669 |
if (!strcmp(name, "hostfwd")) { |
670 |
config->flags = SLIRP_CFG_HOSTFWD; |
671 |
} |
672 |
|
673 |
config->next = slirp_configs; |
674 |
slirp_configs = config; |
675 |
|
676 |
return 0; |
677 |
} |
678 |
|
679 |
int net_init_slirp(QemuOpts *opts,
|
680 |
Monitor *mon, |
681 |
const char *name, |
682 |
VLANState *vlan) |
683 |
{ |
684 |
struct slirp_config_str *config;
|
685 |
const char *vhost; |
686 |
const char *vhostname; |
687 |
const char *vdhcp_start; |
688 |
const char *vnamesrv; |
689 |
const char *tftp_export; |
690 |
const char *bootfile; |
691 |
const char *smb_export; |
692 |
const char *vsmbsrv; |
693 |
char *vnet = NULL; |
694 |
int restricted = 0; |
695 |
int ret;
|
696 |
|
697 |
vhost = qemu_opt_get(opts, "host");
|
698 |
vhostname = qemu_opt_get(opts, "hostname");
|
699 |
vdhcp_start = qemu_opt_get(opts, "dhcpstart");
|
700 |
vnamesrv = qemu_opt_get(opts, "dns");
|
701 |
tftp_export = qemu_opt_get(opts, "tftp");
|
702 |
bootfile = qemu_opt_get(opts, "bootfile");
|
703 |
smb_export = qemu_opt_get(opts, "smb");
|
704 |
vsmbsrv = qemu_opt_get(opts, "smbserver");
|
705 |
|
706 |
if (qemu_opt_get(opts, "ip")) { |
707 |
const char *ip = qemu_opt_get(opts, "ip"); |
708 |
int l = strlen(ip) + strlen("/24") + 1; |
709 |
|
710 |
vnet = qemu_malloc(l); |
711 |
|
712 |
/* emulate legacy ip= parameter */
|
713 |
pstrcpy(vnet, l, ip); |
714 |
pstrcat(vnet, l, "/24");
|
715 |
} |
716 |
|
717 |
if (qemu_opt_get(opts, "net")) { |
718 |
if (vnet) {
|
719 |
qemu_free(vnet); |
720 |
} |
721 |
vnet = qemu_strdup(qemu_opt_get(opts, "net"));
|
722 |
} |
723 |
|
724 |
if (qemu_opt_get(opts, "restrict") && |
725 |
qemu_opt_get(opts, "restrict")[0] == 'y') { |
726 |
restricted = 1;
|
727 |
} |
728 |
|
729 |
qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0); |
730 |
|
731 |
ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
|
732 |
vhostname, tftp_export, bootfile, vdhcp_start, |
733 |
vnamesrv, smb_export, vsmbsrv); |
734 |
|
735 |
while (slirp_configs) {
|
736 |
config = slirp_configs; |
737 |
slirp_configs = config->next; |
738 |
qemu_free(config); |
739 |
} |
740 |
|
741 |
qemu_free(vnet); |
742 |
|
743 |
return ret;
|
744 |
} |
745 |
|
746 |
int net_slirp_parse_legacy(QemuOptsList *opts_list, const char *optarg, int *ret) |
747 |
{ |
748 |
if (strcmp(opts_list->name, "net") != 0 || |
749 |
strncmp(optarg, "channel,", strlen("channel,")) != 0) { |
750 |
return 0; |
751 |
} |
752 |
|
753 |
/* handle legacy -net channel,port:chr */
|
754 |
optarg += strlen("channel,");
|
755 |
|
756 |
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
757 |
struct slirp_config_str *config;
|
758 |
|
759 |
config = qemu_malloc(sizeof(*config));
|
760 |
pstrcpy(config->str, sizeof(config->str), optarg);
|
761 |
config->flags = SLIRP_CFG_LEGACY; |
762 |
config->next = slirp_configs; |
763 |
slirp_configs = config; |
764 |
*ret = 0;
|
765 |
} else {
|
766 |
*ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
|
767 |
} |
768 |
|
769 |
return 1; |
770 |
} |
771 |
|