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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 <pwd.h> |
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#include <sys/wait.h> |
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#endif
|
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#include "net.h" |
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#include "net/hub.h" |
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#include "monitor.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) |
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{ |
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const char *p, *p1; |
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int len;
|
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p = *pp; |
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p1 = strchr(p, sep); |
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if (!p1)
|
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return -1; |
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len = p1 - p; |
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p1++; |
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if (buf_size > 0) { |
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if (len > buf_size - 1) |
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len = buf_size - 1;
|
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memcpy(buf, p, len); |
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buf[len] = '\0';
|
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} |
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*pp = p1; |
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return 0; |
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} |
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|
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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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NetClientState nc; |
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QTAILQ_ENTRY(SlirpState) entry; |
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Slirp *slirp; |
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#ifndef _WIN32
|
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char smb_dir[128]; |
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#endif
|
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} SlirpState; |
78 |
|
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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); |
84 |
|
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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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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(NetClientState *nc, const uint8_t *buf, size_t size) |
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{ |
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SlirpState *s = DO_UPCAST(SlirpState, nc, nc); |
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|
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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(NetClientState *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_OPTIONS_KIND_USER, |
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.size = sizeof(SlirpState),
|
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.receive = net_slirp_receive, |
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.cleanup = net_slirp_cleanup, |
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}; |
131 |
|
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static int net_slirp_init(NetClientState *peer, const char *model, |
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const char *name, int restricted, |
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const char *vnetwork, const char *vhost, |
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const char *vhostname, const char *tftp_export, |
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const char *bootfile, const char *vdhcp_start, |
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const char *vnameserver, const char *smb_export, |
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const char *vsmbserver) |
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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 */ |
142 |
struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */ |
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struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */ |
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struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */ |
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struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */ |
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#ifndef _WIN32
|
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struct in_addr smbsrv = { .s_addr = 0 }; |
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#endif
|
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NetClientState *nc; |
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SlirpState *s; |
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char buf[20]; |
152 |
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; |
159 |
} |
160 |
if (!bootfile) {
|
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bootfile = legacy_bootp_filename; |
162 |
} |
163 |
|
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if (vnetwork) {
|
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if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) { |
166 |
if (!inet_aton(vnetwork, &net)) {
|
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return -1; |
168 |
} |
169 |
addr = ntohl(net.s_addr); |
170 |
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 */ |
174 |
} 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 */ |
178 |
} else if ((addr & 0xffff0000) == 0xc6120000) { |
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mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */ |
180 |
} else if ((addr & 0xe0000000) == 0xe0000000) { |
181 |
mask.s_addr = htonl(0xffffff00); /* class C */ |
182 |
} else {
|
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mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */ |
184 |
} |
185 |
} else {
|
186 |
if (!inet_aton(buf, &net)) {
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return -1; |
188 |
} |
189 |
shift = strtol(vnetwork, &end, 10);
|
190 |
if (*end != '\0') { |
191 |
if (!inet_aton(vnetwork, &mask)) {
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return -1; |
193 |
} |
194 |
} else if (shift < 4 || shift > 32) { |
195 |
return -1; |
196 |
} else {
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mask.s_addr = htonl(0xffffffff << (32 - shift)); |
198 |
} |
199 |
} |
200 |
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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} |
205 |
|
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if (vhost && !inet_aton(vhost, &host)) {
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return -1; |
208 |
} |
209 |
if ((host.s_addr & mask.s_addr) != net.s_addr) {
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return -1; |
211 |
} |
212 |
|
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if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
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return -1; |
215 |
} |
216 |
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) { |
218 |
return -1; |
219 |
} |
220 |
|
221 |
if (vnameserver && !inet_aton(vnameserver, &dns)) {
|
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return -1; |
223 |
} |
224 |
if ((dns.s_addr & mask.s_addr) != net.s_addr ||
|
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dns.s_addr == host.s_addr) { |
226 |
return -1; |
227 |
} |
228 |
|
229 |
#ifndef _WIN32
|
230 |
if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
|
231 |
return -1; |
232 |
} |
233 |
#endif
|
234 |
|
235 |
nc = qemu_new_net_client(&net_slirp_info, peer, model, name); |
236 |
|
237 |
snprintf(nc->info_str, sizeof(nc->info_str),
|
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"net=%s,restrict=%s", inet_ntoa(net),
|
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restricted ? "on" : "off"); |
240 |
|
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s = DO_UPCAST(SlirpState, nc, nc); |
242 |
|
243 |
s->slirp = slirp_init(restricted, net, mask, host, vhostname, |
244 |
tftp_export, bootfile, dhcp, dns, s); |
245 |
QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry); |
246 |
|
247 |
for (config = slirp_configs; config; config = config->next) {
|
248 |
if (config->flags & SLIRP_CFG_HOSTFWD) {
|
249 |
if (slirp_hostfwd(s, config->str,
|
250 |
config->flags & SLIRP_CFG_LEGACY) < 0)
|
251 |
goto error;
|
252 |
} else {
|
253 |
if (slirp_guestfwd(s, config->str,
|
254 |
config->flags & SLIRP_CFG_LEGACY) < 0)
|
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goto error;
|
256 |
} |
257 |
} |
258 |
#ifndef _WIN32
|
259 |
if (!smb_export) {
|
260 |
smb_export = legacy_smb_export; |
261 |
} |
262 |
if (smb_export) {
|
263 |
if (slirp_smb(s, smb_export, smbsrv) < 0) |
264 |
goto error;
|
265 |
} |
266 |
#endif
|
267 |
|
268 |
return 0; |
269 |
|
270 |
error:
|
271 |
qemu_del_net_client(nc); |
272 |
return -1; |
273 |
} |
274 |
|
275 |
static SlirpState *slirp_lookup(Monitor *mon, const char *vlan, |
276 |
const char *stack) |
277 |
{ |
278 |
|
279 |
if (vlan) {
|
280 |
NetClientState *nc; |
281 |
nc = net_hub_find_client_by_name(strtol(vlan, NULL, 0), stack); |
282 |
if (!nc) {
|
283 |
return NULL; |
284 |
} |
285 |
if (strcmp(nc->model, "user")) { |
286 |
monitor_printf(mon, "invalid device specified\n");
|
287 |
return NULL; |
288 |
} |
289 |
return DO_UPCAST(SlirpState, nc, nc);
|
290 |
} else {
|
291 |
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
292 |
monitor_printf(mon, "user mode network stack not in use\n");
|
293 |
return NULL; |
294 |
} |
295 |
return QTAILQ_FIRST(&slirp_stacks);
|
296 |
} |
297 |
} |
298 |
|
299 |
void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict) |
300 |
{ |
301 |
struct in_addr host_addr = { .s_addr = INADDR_ANY };
|
302 |
int host_port;
|
303 |
char buf[256]; |
304 |
const char *src_str, *p; |
305 |
SlirpState *s; |
306 |
int is_udp = 0; |
307 |
int err;
|
308 |
const char *arg1 = qdict_get_str(qdict, "arg1"); |
309 |
const char *arg2 = qdict_get_try_str(qdict, "arg2"); |
310 |
const char *arg3 = qdict_get_try_str(qdict, "arg3"); |
311 |
|
312 |
if (arg2) {
|
313 |
s = slirp_lookup(mon, arg1, arg2); |
314 |
src_str = arg3; |
315 |
} else {
|
316 |
s = slirp_lookup(mon, NULL, NULL); |
317 |
src_str = arg1; |
318 |
} |
319 |
if (!s) {
|
320 |
return;
|
321 |
} |
322 |
|
323 |
p = src_str; |
324 |
if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
325 |
goto fail_syntax;
|
326 |
} |
327 |
|
328 |
if (!strcmp(buf, "tcp") || buf[0] == '\0') { |
329 |
is_udp = 0;
|
330 |
} else if (!strcmp(buf, "udp")) { |
331 |
is_udp = 1;
|
332 |
} else {
|
333 |
goto fail_syntax;
|
334 |
} |
335 |
|
336 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
337 |
goto fail_syntax;
|
338 |
} |
339 |
if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { |
340 |
goto fail_syntax;
|
341 |
} |
342 |
|
343 |
host_port = atoi(p); |
344 |
|
345 |
err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp, |
346 |
host_addr, host_port); |
347 |
|
348 |
monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
|
349 |
err ? "not found" : "removed"); |
350 |
return;
|
351 |
|
352 |
fail_syntax:
|
353 |
monitor_printf(mon, "invalid format\n");
|
354 |
} |
355 |
|
356 |
static int slirp_hostfwd(SlirpState *s, const char *redir_str, |
357 |
int legacy_format)
|
358 |
{ |
359 |
struct in_addr host_addr = { .s_addr = INADDR_ANY };
|
360 |
struct in_addr guest_addr = { .s_addr = 0 }; |
361 |
int host_port, guest_port;
|
362 |
const char *p; |
363 |
char buf[256]; |
364 |
int is_udp;
|
365 |
char *end;
|
366 |
|
367 |
p = redir_str; |
368 |
if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
369 |
goto fail_syntax;
|
370 |
} |
371 |
if (!strcmp(buf, "tcp") || buf[0] == '\0') { |
372 |
is_udp = 0;
|
373 |
} else if (!strcmp(buf, "udp")) { |
374 |
is_udp = 1;
|
375 |
} else {
|
376 |
goto fail_syntax;
|
377 |
} |
378 |
|
379 |
if (!legacy_format) {
|
380 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
381 |
goto fail_syntax;
|
382 |
} |
383 |
if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { |
384 |
goto fail_syntax;
|
385 |
} |
386 |
} |
387 |
|
388 |
if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) { |
389 |
goto fail_syntax;
|
390 |
} |
391 |
host_port = strtol(buf, &end, 0);
|
392 |
if (*end != '\0' || host_port < 1 || host_port > 65535) { |
393 |
goto fail_syntax;
|
394 |
} |
395 |
|
396 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
397 |
goto fail_syntax;
|
398 |
} |
399 |
if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) { |
400 |
goto fail_syntax;
|
401 |
} |
402 |
|
403 |
guest_port = strtol(p, &end, 0);
|
404 |
if (*end != '\0' || guest_port < 1 || guest_port > 65535) { |
405 |
goto fail_syntax;
|
406 |
} |
407 |
|
408 |
if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
|
409 |
guest_port) < 0) {
|
410 |
error_report("could not set up host forwarding rule '%s'",
|
411 |
redir_str); |
412 |
return -1; |
413 |
} |
414 |
return 0; |
415 |
|
416 |
fail_syntax:
|
417 |
error_report("invalid host forwarding rule '%s'", redir_str);
|
418 |
return -1; |
419 |
} |
420 |
|
421 |
void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict) |
422 |
{ |
423 |
const char *redir_str; |
424 |
SlirpState *s; |
425 |
const char *arg1 = qdict_get_str(qdict, "arg1"); |
426 |
const char *arg2 = qdict_get_try_str(qdict, "arg2"); |
427 |
const char *arg3 = qdict_get_try_str(qdict, "arg3"); |
428 |
|
429 |
if (arg2) {
|
430 |
s = slirp_lookup(mon, arg1, arg2); |
431 |
redir_str = arg3; |
432 |
} else {
|
433 |
s = slirp_lookup(mon, NULL, NULL); |
434 |
redir_str = arg1; |
435 |
} |
436 |
if (s) {
|
437 |
slirp_hostfwd(s, redir_str, 0);
|
438 |
} |
439 |
|
440 |
} |
441 |
|
442 |
int net_slirp_redir(const char *redir_str) |
443 |
{ |
444 |
struct slirp_config_str *config;
|
445 |
|
446 |
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
447 |
config = g_malloc(sizeof(*config));
|
448 |
pstrcpy(config->str, sizeof(config->str), redir_str);
|
449 |
config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY; |
450 |
config->next = slirp_configs; |
451 |
slirp_configs = config; |
452 |
return 0; |
453 |
} |
454 |
|
455 |
return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1); |
456 |
} |
457 |
|
458 |
#ifndef _WIN32
|
459 |
|
460 |
/* automatic user mode samba server configuration */
|
461 |
static void slirp_smb_cleanup(SlirpState *s) |
462 |
{ |
463 |
char cmd[128]; |
464 |
int ret;
|
465 |
|
466 |
if (s->smb_dir[0] != '\0') { |
467 |
snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir); |
468 |
ret = system(cmd); |
469 |
if (ret == -1 || !WIFEXITED(ret)) { |
470 |
error_report("'%s' failed.", cmd);
|
471 |
} else if (WEXITSTATUS(ret)) { |
472 |
error_report("'%s' failed. Error code: %d",
|
473 |
cmd, WEXITSTATUS(ret)); |
474 |
} |
475 |
s->smb_dir[0] = '\0'; |
476 |
} |
477 |
} |
478 |
|
479 |
static int slirp_smb(SlirpState* s, const char *exported_dir, |
480 |
struct in_addr vserver_addr)
|
481 |
{ |
482 |
static int instance; |
483 |
char smb_conf[128]; |
484 |
char smb_cmdline[128]; |
485 |
struct passwd *passwd;
|
486 |
FILE *f; |
487 |
|
488 |
passwd = getpwuid(geteuid()); |
489 |
if (!passwd) {
|
490 |
error_report("failed to retrieve user name");
|
491 |
return -1; |
492 |
} |
493 |
|
494 |
if (access(CONFIG_SMBD_COMMAND, F_OK)) {
|
495 |
error_report("could not find '%s', please install it",
|
496 |
CONFIG_SMBD_COMMAND); |
497 |
return -1; |
498 |
} |
499 |
|
500 |
if (access(exported_dir, R_OK | X_OK)) {
|
501 |
error_report("error accessing shared directory '%s': %s",
|
502 |
exported_dir, strerror(errno)); |
503 |
return -1; |
504 |
} |
505 |
|
506 |
snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d", |
507 |
(long)getpid(), instance++);
|
508 |
if (mkdir(s->smb_dir, 0700) < 0) { |
509 |
error_report("could not create samba server dir '%s'", s->smb_dir);
|
510 |
return -1; |
511 |
} |
512 |
snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf"); |
513 |
|
514 |
f = fopen(smb_conf, "w");
|
515 |
if (!f) {
|
516 |
slirp_smb_cleanup(s); |
517 |
error_report("could not create samba server configuration file '%s'",
|
518 |
smb_conf); |
519 |
return -1; |
520 |
} |
521 |
fprintf(f, |
522 |
"[global]\n"
|
523 |
"private dir=%s\n"
|
524 |
"socket address=127.0.0.1\n"
|
525 |
"pid directory=%s\n"
|
526 |
"lock directory=%s\n"
|
527 |
"state directory=%s\n"
|
528 |
"log file=%s/log.smbd\n"
|
529 |
"smb passwd file=%s/smbpasswd\n"
|
530 |
"security = share\n"
|
531 |
"[qemu]\n"
|
532 |
"path=%s\n"
|
533 |
"read only=no\n"
|
534 |
"guest ok=yes\n"
|
535 |
"force user=%s\n",
|
536 |
s->smb_dir, |
537 |
s->smb_dir, |
538 |
s->smb_dir, |
539 |
s->smb_dir, |
540 |
s->smb_dir, |
541 |
s->smb_dir, |
542 |
exported_dir, |
543 |
passwd->pw_name |
544 |
); |
545 |
fclose(f); |
546 |
|
547 |
snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s", |
548 |
CONFIG_SMBD_COMMAND, smb_conf); |
549 |
|
550 |
if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) { |
551 |
slirp_smb_cleanup(s); |
552 |
error_report("conflicting/invalid smbserver address");
|
553 |
return -1; |
554 |
} |
555 |
return 0; |
556 |
} |
557 |
|
558 |
/* automatic user mode samba server configuration (legacy interface) */
|
559 |
int net_slirp_smb(const char *exported_dir) |
560 |
{ |
561 |
struct in_addr vserver_addr = { .s_addr = 0 }; |
562 |
|
563 |
if (legacy_smb_export) {
|
564 |
fprintf(stderr, "-smb given twice\n");
|
565 |
return -1; |
566 |
} |
567 |
legacy_smb_export = exported_dir; |
568 |
if (!QTAILQ_EMPTY(&slirp_stacks)) {
|
569 |
return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
|
570 |
vserver_addr); |
571 |
} |
572 |
return 0; |
573 |
} |
574 |
|
575 |
#endif /* !defined(_WIN32) */ |
576 |
|
577 |
struct GuestFwd {
|
578 |
CharDriverState *hd; |
579 |
struct in_addr server;
|
580 |
int port;
|
581 |
Slirp *slirp; |
582 |
}; |
583 |
|
584 |
static int guestfwd_can_read(void *opaque) |
585 |
{ |
586 |
struct GuestFwd *fwd = opaque;
|
587 |
return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
|
588 |
} |
589 |
|
590 |
static void guestfwd_read(void *opaque, const uint8_t *buf, int size) |
591 |
{ |
592 |
struct GuestFwd *fwd = opaque;
|
593 |
slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size); |
594 |
} |
595 |
|
596 |
static int slirp_guestfwd(SlirpState *s, const char *config_str, |
597 |
int legacy_format)
|
598 |
{ |
599 |
struct in_addr server = { .s_addr = 0 }; |
600 |
struct GuestFwd *fwd;
|
601 |
const char *p; |
602 |
char buf[128]; |
603 |
char *end;
|
604 |
int port;
|
605 |
|
606 |
p = config_str; |
607 |
if (legacy_format) {
|
608 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
609 |
goto fail_syntax;
|
610 |
} |
611 |
} else {
|
612 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
613 |
goto fail_syntax;
|
614 |
} |
615 |
if (strcmp(buf, "tcp") && buf[0] != '\0') { |
616 |
goto fail_syntax;
|
617 |
} |
618 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
619 |
goto fail_syntax;
|
620 |
} |
621 |
if (buf[0] != '\0' && !inet_aton(buf, &server)) { |
622 |
goto fail_syntax;
|
623 |
} |
624 |
if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { |
625 |
goto fail_syntax;
|
626 |
} |
627 |
} |
628 |
port = strtol(buf, &end, 10);
|
629 |
if (*end != '\0' || port < 1 || port > 65535) { |
630 |
goto fail_syntax;
|
631 |
} |
632 |
|
633 |
fwd = g_malloc(sizeof(struct GuestFwd)); |
634 |
snprintf(buf, sizeof(buf), "guestfwd.tcp.%d", port); |
635 |
|
636 |
if ((strlen(p) > 4) && !strncmp(p, "cmd:", 4)) { |
637 |
if (slirp_add_exec(s->slirp, 0, &p[4], &server, port) < 0) { |
638 |
error_report("conflicting/invalid host:port in guest forwarding "
|
639 |
"rule '%s'", config_str);
|
640 |
g_free(fwd); |
641 |
return -1; |
642 |
} |
643 |
} else {
|
644 |
fwd->hd = qemu_chr_new(buf, p, NULL);
|
645 |
if (!fwd->hd) {
|
646 |
error_report("could not open guest forwarding device '%s'", buf);
|
647 |
g_free(fwd); |
648 |
return -1; |
649 |
} |
650 |
|
651 |
if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) { |
652 |
error_report("conflicting/invalid host:port in guest forwarding "
|
653 |
"rule '%s'", config_str);
|
654 |
g_free(fwd); |
655 |
return -1; |
656 |
} |
657 |
fwd->server = server; |
658 |
fwd->port = port; |
659 |
fwd->slirp = s->slirp; |
660 |
|
661 |
qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read, |
662 |
NULL, fwd);
|
663 |
} |
664 |
return 0; |
665 |
|
666 |
fail_syntax:
|
667 |
error_report("invalid guest forwarding rule '%s'", config_str);
|
668 |
return -1; |
669 |
} |
670 |
|
671 |
void do_info_usernet(Monitor *mon)
|
672 |
{ |
673 |
SlirpState *s; |
674 |
|
675 |
QTAILQ_FOREACH(s, &slirp_stacks, entry) { |
676 |
int id;
|
677 |
bool got_vlan_id = net_hub_id_for_client(&s->nc, &id) == 0; |
678 |
monitor_printf(mon, "VLAN %d (%s):\n",
|
679 |
got_vlan_id ? id : -1,
|
680 |
s->nc.name); |
681 |
slirp_connection_info(s->slirp, mon); |
682 |
} |
683 |
} |
684 |
|
685 |
static void |
686 |
net_init_slirp_configs(const StringList *fwd, int flags) |
687 |
{ |
688 |
while (fwd) {
|
689 |
struct slirp_config_str *config;
|
690 |
|
691 |
config = g_malloc0(sizeof(*config));
|
692 |
pstrcpy(config->str, sizeof(config->str), fwd->value->str);
|
693 |
config->flags = flags; |
694 |
config->next = slirp_configs; |
695 |
slirp_configs = config; |
696 |
|
697 |
fwd = fwd->next; |
698 |
} |
699 |
} |
700 |
|
701 |
int net_init_slirp(const NetClientOptions *opts, const char *name, |
702 |
NetClientState *peer) |
703 |
{ |
704 |
struct slirp_config_str *config;
|
705 |
char *vnet;
|
706 |
int ret;
|
707 |
const NetdevUserOptions *user;
|
708 |
|
709 |
assert(opts->kind == NET_CLIENT_OPTIONS_KIND_USER); |
710 |
user = opts->user; |
711 |
|
712 |
vnet = user->has_net ? g_strdup(user->net) : |
713 |
user->has_ip ? g_strdup_printf("%s/24", user->ip) :
|
714 |
NULL;
|
715 |
|
716 |
/* all optional fields are initialized to "all bits zero" */
|
717 |
|
718 |
net_init_slirp_configs(user->hostfwd, SLIRP_CFG_HOSTFWD); |
719 |
net_init_slirp_configs(user->guestfwd, 0);
|
720 |
|
721 |
ret = net_slirp_init(peer, "user", name, user->q_restrict, vnet,
|
722 |
user->host, user->hostname, user->tftp, |
723 |
user->bootfile, user->dhcpstart, user->dns, user->smb, |
724 |
user->smbserver); |
725 |
|
726 |
while (slirp_configs) {
|
727 |
config = slirp_configs; |
728 |
slirp_configs = config->next; |
729 |
g_free(config); |
730 |
} |
731 |
|
732 |
g_free(vnet); |
733 |
|
734 |
return ret;
|
735 |
} |
736 |
|
737 |
int net_slirp_parse_legacy(QemuOptsList *opts_list, const char *optarg, int *ret) |
738 |
{ |
739 |
if (strcmp(opts_list->name, "net") != 0 || |
740 |
strncmp(optarg, "channel,", strlen("channel,")) != 0) { |
741 |
return 0; |
742 |
} |
743 |
|
744 |
/* handle legacy -net channel,port:chr */
|
745 |
optarg += strlen("channel,");
|
746 |
|
747 |
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
748 |
struct slirp_config_str *config;
|
749 |
|
750 |
config = g_malloc(sizeof(*config));
|
751 |
pstrcpy(config->str, sizeof(config->str), optarg);
|
752 |
config->flags = SLIRP_CFG_LEGACY; |
753 |
config->next = slirp_configs; |
754 |
slirp_configs = config; |
755 |
*ret = 0;
|
756 |
} else {
|
757 |
*ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
|
758 |
} |
759 |
|
760 |
return 1; |
761 |
} |
762 |
|