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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 "qemu-common.h" |
25 |
#include "net.h" |
26 |
#include "console.h" |
27 |
#include "sysemu.h" |
28 |
#include "qemu-timer.h" |
29 |
#include "qemu-char.h" |
30 |
#include "audio/audio.h" |
31 |
|
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#include <unistd.h> |
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#include <fcntl.h> |
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#include <signal.h> |
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#include <time.h> |
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#include <errno.h> |
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#include <sys/time.h> |
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#include <zlib.h> |
39 |
|
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#ifndef _WIN32
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#include <sys/times.h> |
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#include <sys/wait.h> |
43 |
#include <termios.h> |
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#include <sys/mman.h> |
45 |
#include <sys/ioctl.h> |
46 |
#include <sys/resource.h> |
47 |
#include <sys/socket.h> |
48 |
#include <netinet/in.h> |
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#include <net/if.h> |
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#ifdef __NetBSD__
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#include <net/if_tap.h> |
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#endif
|
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#ifdef __linux__
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#include <linux/if_tun.h> |
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#endif
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#include <arpa/inet.h> |
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#include <dirent.h> |
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#include <netdb.h> |
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#include <sys/select.h> |
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#ifdef _BSD
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#include <sys/stat.h> |
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#ifdef __FreeBSD__
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#include <libutil.h> |
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#else
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#include <util.h> |
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#endif
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#elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
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#include <freebsd/stdlib.h> |
69 |
#else
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#ifdef __linux__
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#include <pty.h> |
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#include <malloc.h> |
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#include <linux/rtc.h> |
74 |
|
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/* For the benefit of older linux systems which don't supply it,
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we use a local copy of hpet.h. */
|
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/* #include <linux/hpet.h> */
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#include "hpet.h" |
79 |
|
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#include <linux/ppdev.h> |
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#include <linux/parport.h> |
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#endif
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#ifdef __sun__
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#include <sys/stat.h> |
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#include <sys/ethernet.h> |
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#include <sys/sockio.h> |
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#include <netinet/arp.h> |
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#include <netinet/in.h> |
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#include <netinet/in_systm.h> |
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#include <netinet/ip.h> |
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#include <netinet/ip_icmp.h> // must come after ip.h |
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#include <netinet/udp.h> |
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#include <netinet/tcp.h> |
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#include <net/if.h> |
95 |
#include <syslog.h> |
96 |
#include <stropts.h> |
97 |
#endif
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#endif
|
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#endif
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|
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#include "qemu_socket.h" |
102 |
|
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#if defined(CONFIG_SLIRP)
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#include "libslirp.h" |
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#endif
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|
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#if defined(__OpenBSD__)
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#include <util.h> |
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#endif
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|
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#if defined(CONFIG_VDE)
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#include <libvdeplug.h> |
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#endif
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|
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#ifdef _WIN32
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#include <malloc.h> |
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#include <sys/timeb.h> |
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#include <mmsystem.h> |
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#define getopt_long_only getopt_long
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#define memalign(align, size) malloc(size)
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#endif
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static VLANState *first_vlan;
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|
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/***********************************************************/
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/* network device redirectors */
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|
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#if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
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static void hex_dump(FILE *f, const uint8_t *buf, int size) |
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{ |
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int len, i, j, c;
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|
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for(i=0;i<size;i+=16) { |
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len = size - i; |
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if (len > 16) |
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len = 16;
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fprintf(f, "%08x ", i);
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for(j=0;j<16;j++) { |
139 |
if (j < len)
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fprintf(f, " %02x", buf[i+j]);
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else
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fprintf(f, " ");
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} |
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fprintf(f, " ");
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for(j=0;j<len;j++) { |
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c = buf[i+j]; |
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if (c < ' ' || c > '~') |
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c = '.';
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fprintf(f, "%c", c);
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} |
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fprintf(f, "\n");
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} |
153 |
} |
154 |
#endif
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|
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static int parse_macaddr(uint8_t *macaddr, const char *p) |
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{ |
158 |
int i;
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char *last_char;
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long int offset; |
161 |
|
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errno = 0;
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offset = strtol(p, &last_char, 0);
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if (0 == errno && '\0' == *last_char && |
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offset >= 0 && offset <= 0xFFFFFF) { |
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macaddr[3] = (offset & 0xFF0000) >> 16; |
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macaddr[4] = (offset & 0xFF00) >> 8; |
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macaddr[5] = offset & 0xFF; |
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return 0; |
170 |
} else {
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for(i = 0; i < 6; i++) { |
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macaddr[i] = strtol(p, (char **)&p, 16); |
173 |
if (i == 5) { |
174 |
if (*p != '\0') |
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return -1; |
176 |
} else {
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if (*p != ':' && *p != '-') |
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return -1; |
179 |
p++; |
180 |
} |
181 |
} |
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return 0; |
183 |
} |
184 |
|
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return -1; |
186 |
} |
187 |
|
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static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) |
189 |
{ |
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const char *p, *p1; |
191 |
int len;
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p = *pp; |
193 |
p1 = strchr(p, sep); |
194 |
if (!p1)
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return -1; |
196 |
len = p1 - p; |
197 |
p1++; |
198 |
if (buf_size > 0) { |
199 |
if (len > buf_size - 1) |
200 |
len = buf_size - 1;
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memcpy(buf, p, len); |
202 |
buf[len] = '\0';
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} |
204 |
*pp = p1; |
205 |
return 0; |
206 |
} |
207 |
|
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int parse_host_src_port(struct sockaddr_in *haddr, |
209 |
struct sockaddr_in *saddr,
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const char *input_str) |
211 |
{ |
212 |
char *str = strdup(input_str);
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char *host_str = str;
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char *src_str;
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const char *src_str2; |
216 |
char *ptr;
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217 |
|
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/*
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* Chop off any extra arguments at the end of the string which
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* would start with a comma, then fill in the src port information
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* if it was provided else use the "any address" and "any port".
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*/
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if ((ptr = strchr(str,','))) |
224 |
*ptr = '\0';
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225 |
|
226 |
if ((src_str = strchr(input_str,'@'))) { |
227 |
*src_str = '\0';
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src_str++; |
229 |
} |
230 |
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231 |
if (parse_host_port(haddr, host_str) < 0) |
232 |
goto fail;
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233 |
|
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src_str2 = src_str; |
235 |
if (!src_str || *src_str == '\0') |
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src_str2 = ":0";
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|
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if (parse_host_port(saddr, src_str2) < 0) |
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goto fail;
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240 |
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free(str); |
242 |
return(0); |
243 |
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fail:
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free(str); |
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return -1; |
247 |
} |
248 |
|
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int parse_host_port(struct sockaddr_in *saddr, const char *str) |
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{ |
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char buf[512]; |
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struct hostent *he;
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const char *p, *r; |
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int port;
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|
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p = str; |
257 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) |
258 |
return -1; |
259 |
saddr->sin_family = AF_INET; |
260 |
if (buf[0] == '\0') { |
261 |
saddr->sin_addr.s_addr = 0;
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} else {
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263 |
if (qemu_isdigit(buf[0])) { |
264 |
if (!inet_aton(buf, &saddr->sin_addr))
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return -1; |
266 |
} else {
|
267 |
if ((he = gethostbyname(buf)) == NULL) |
268 |
return - 1; |
269 |
saddr->sin_addr = *(struct in_addr *)he->h_addr;
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} |
271 |
} |
272 |
port = strtol(p, (char **)&r, 0); |
273 |
if (r == p)
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return -1; |
275 |
saddr->sin_port = htons(port); |
276 |
return 0; |
277 |
} |
278 |
|
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#if !defined(_WIN32) && 0 |
280 |
static int parse_unix_path(struct sockaddr_un *uaddr, const char *str) |
281 |
{ |
282 |
const char *p; |
283 |
int len;
|
284 |
|
285 |
len = MIN(108, strlen(str));
|
286 |
p = strchr(str, ',');
|
287 |
if (p)
|
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len = MIN(len, p - str); |
289 |
|
290 |
memset(uaddr, 0, sizeof(*uaddr)); |
291 |
|
292 |
uaddr->sun_family = AF_UNIX; |
293 |
memcpy(uaddr->sun_path, str, len); |
294 |
|
295 |
return 0; |
296 |
} |
297 |
#endif
|
298 |
|
299 |
void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6]) |
300 |
{ |
301 |
snprintf(vc->info_str, sizeof(vc->info_str),
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302 |
"model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
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vc->model, |
304 |
macaddr[0], macaddr[1], macaddr[2], |
305 |
macaddr[3], macaddr[4], macaddr[5]); |
306 |
} |
307 |
|
308 |
static char *assign_name(VLANClientState *vc1, const char *model) |
309 |
{ |
310 |
VLANState *vlan; |
311 |
char buf[256]; |
312 |
int id = 0; |
313 |
|
314 |
for (vlan = first_vlan; vlan; vlan = vlan->next) {
|
315 |
VLANClientState *vc; |
316 |
|
317 |
for (vc = vlan->first_client; vc; vc = vc->next)
|
318 |
if (vc != vc1 && strcmp(vc->model, model) == 0) |
319 |
id++; |
320 |
} |
321 |
|
322 |
snprintf(buf, sizeof(buf), "%s.%d", model, id); |
323 |
|
324 |
return strdup(buf);
|
325 |
} |
326 |
|
327 |
VLANClientState *qemu_new_vlan_client(VLANState *vlan, |
328 |
const char *model, |
329 |
const char *name, |
330 |
IOReadHandler *fd_read, |
331 |
IOCanRWHandler *fd_can_read, |
332 |
void *opaque)
|
333 |
{ |
334 |
VLANClientState *vc, **pvc; |
335 |
vc = qemu_mallocz(sizeof(VLANClientState));
|
336 |
vc->model = strdup(model); |
337 |
if (name)
|
338 |
vc->name = strdup(name); |
339 |
else
|
340 |
vc->name = assign_name(vc, model); |
341 |
vc->fd_read = fd_read; |
342 |
vc->fd_can_read = fd_can_read; |
343 |
vc->opaque = opaque; |
344 |
vc->vlan = vlan; |
345 |
|
346 |
vc->next = NULL;
|
347 |
pvc = &vlan->first_client; |
348 |
while (*pvc != NULL) |
349 |
pvc = &(*pvc)->next; |
350 |
*pvc = vc; |
351 |
return vc;
|
352 |
} |
353 |
|
354 |
void qemu_del_vlan_client(VLANClientState *vc)
|
355 |
{ |
356 |
VLANClientState **pvc = &vc->vlan->first_client; |
357 |
|
358 |
while (*pvc != NULL) |
359 |
if (*pvc == vc) {
|
360 |
*pvc = vc->next; |
361 |
free(vc->name); |
362 |
free(vc->model); |
363 |
free(vc); |
364 |
break;
|
365 |
} else
|
366 |
pvc = &(*pvc)->next; |
367 |
} |
368 |
|
369 |
int qemu_can_send_packet(VLANClientState *vc1)
|
370 |
{ |
371 |
VLANState *vlan = vc1->vlan; |
372 |
VLANClientState *vc; |
373 |
|
374 |
for(vc = vlan->first_client; vc != NULL; vc = vc->next) { |
375 |
if (vc != vc1) {
|
376 |
if (vc->fd_can_read && vc->fd_can_read(vc->opaque))
|
377 |
return 1; |
378 |
} |
379 |
} |
380 |
return 0; |
381 |
} |
382 |
|
383 |
void qemu_send_packet(VLANClientState *vc1, const uint8_t *buf, int size) |
384 |
{ |
385 |
VLANState *vlan = vc1->vlan; |
386 |
VLANClientState *vc; |
387 |
|
388 |
if (vc1->link_down)
|
389 |
return;
|
390 |
|
391 |
#ifdef DEBUG_NET
|
392 |
printf("vlan %d send:\n", vlan->id);
|
393 |
hex_dump(stdout, buf, size); |
394 |
#endif
|
395 |
for(vc = vlan->first_client; vc != NULL; vc = vc->next) { |
396 |
if (vc != vc1 && !vc->link_down) {
|
397 |
vc->fd_read(vc->opaque, buf, size); |
398 |
} |
399 |
} |
400 |
} |
401 |
|
402 |
static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov, |
403 |
int iovcnt)
|
404 |
{ |
405 |
uint8_t buffer[4096];
|
406 |
size_t offset = 0;
|
407 |
int i;
|
408 |
|
409 |
for (i = 0; i < iovcnt; i++) { |
410 |
size_t len; |
411 |
|
412 |
len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
|
413 |
memcpy(buffer + offset, iov[i].iov_base, len); |
414 |
offset += len; |
415 |
} |
416 |
|
417 |
vc->fd_read(vc->opaque, buffer, offset); |
418 |
|
419 |
return offset;
|
420 |
} |
421 |
|
422 |
static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt) |
423 |
{ |
424 |
size_t offset = 0;
|
425 |
int i;
|
426 |
|
427 |
for (i = 0; i < iovcnt; i++) |
428 |
offset += iov[i].iov_len; |
429 |
return offset;
|
430 |
} |
431 |
|
432 |
ssize_t qemu_sendv_packet(VLANClientState *vc1, const struct iovec *iov, |
433 |
int iovcnt)
|
434 |
{ |
435 |
VLANState *vlan = vc1->vlan; |
436 |
VLANClientState *vc; |
437 |
ssize_t max_len = 0;
|
438 |
|
439 |
if (vc1->link_down)
|
440 |
return calc_iov_length(iov, iovcnt);
|
441 |
|
442 |
for (vc = vlan->first_client; vc != NULL; vc = vc->next) { |
443 |
ssize_t len = 0;
|
444 |
|
445 |
if (vc == vc1)
|
446 |
continue;
|
447 |
|
448 |
if (vc->link_down)
|
449 |
len = calc_iov_length(iov, iovcnt); |
450 |
if (vc->fd_readv)
|
451 |
len = vc->fd_readv(vc->opaque, iov, iovcnt); |
452 |
else if (vc->fd_read) |
453 |
len = vc_sendv_compat(vc, iov, iovcnt); |
454 |
|
455 |
max_len = MAX(max_len, len); |
456 |
} |
457 |
|
458 |
return max_len;
|
459 |
} |
460 |
|
461 |
#if defined(CONFIG_SLIRP)
|
462 |
|
463 |
/* slirp network adapter */
|
464 |
|
465 |
static int slirp_inited; |
466 |
static int slirp_restrict; |
467 |
static char *slirp_ip; |
468 |
static VLANClientState *slirp_vc;
|
469 |
|
470 |
int slirp_can_output(void) |
471 |
{ |
472 |
return !slirp_vc || qemu_can_send_packet(slirp_vc);
|
473 |
} |
474 |
|
475 |
void slirp_output(const uint8_t *pkt, int pkt_len) |
476 |
{ |
477 |
#ifdef DEBUG_SLIRP
|
478 |
printf("slirp output:\n");
|
479 |
hex_dump(stdout, pkt, pkt_len); |
480 |
#endif
|
481 |
if (!slirp_vc)
|
482 |
return;
|
483 |
qemu_send_packet(slirp_vc, pkt, pkt_len); |
484 |
} |
485 |
|
486 |
int slirp_is_inited(void) |
487 |
{ |
488 |
return slirp_inited;
|
489 |
} |
490 |
|
491 |
static void slirp_receive(void *opaque, const uint8_t *buf, int size) |
492 |
{ |
493 |
#ifdef DEBUG_SLIRP
|
494 |
printf("slirp input:\n");
|
495 |
hex_dump(stdout, buf, size); |
496 |
#endif
|
497 |
slirp_input(buf, size); |
498 |
} |
499 |
|
500 |
static int net_slirp_init(VLANState *vlan, const char *model, const char *name) |
501 |
{ |
502 |
if (!slirp_inited) {
|
503 |
slirp_inited = 1;
|
504 |
slirp_init(slirp_restrict, slirp_ip); |
505 |
} |
506 |
slirp_vc = qemu_new_vlan_client(vlan, model, name, |
507 |
slirp_receive, NULL, NULL); |
508 |
slirp_vc->info_str[0] = '\0'; |
509 |
return 0; |
510 |
} |
511 |
|
512 |
void net_slirp_redir(const char *redir_str) |
513 |
{ |
514 |
int is_udp;
|
515 |
char buf[256], *r; |
516 |
const char *p; |
517 |
struct in_addr guest_addr;
|
518 |
int host_port, guest_port;
|
519 |
|
520 |
if (!slirp_inited) {
|
521 |
slirp_inited = 1;
|
522 |
slirp_init(slirp_restrict, slirp_ip); |
523 |
} |
524 |
|
525 |
p = redir_str; |
526 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) |
527 |
goto fail;
|
528 |
if (!strcmp(buf, "tcp")) { |
529 |
is_udp = 0;
|
530 |
} else if (!strcmp(buf, "udp")) { |
531 |
is_udp = 1;
|
532 |
} else {
|
533 |
goto fail;
|
534 |
} |
535 |
|
536 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) |
537 |
goto fail;
|
538 |
host_port = strtol(buf, &r, 0);
|
539 |
if (r == buf)
|
540 |
goto fail;
|
541 |
|
542 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) |
543 |
goto fail;
|
544 |
if (buf[0] == '\0') { |
545 |
pstrcpy(buf, sizeof(buf), "10.0.2.15"); |
546 |
} |
547 |
if (!inet_aton(buf, &guest_addr))
|
548 |
goto fail;
|
549 |
|
550 |
guest_port = strtol(p, &r, 0);
|
551 |
if (r == p)
|
552 |
goto fail;
|
553 |
|
554 |
if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) { |
555 |
fprintf(stderr, "qemu: could not set up redirection\n");
|
556 |
exit(1);
|
557 |
} |
558 |
return;
|
559 |
fail:
|
560 |
fprintf(stderr, "qemu: syntax: -redir [tcp|udp]:host-port:[guest-host]:guest-port\n");
|
561 |
exit(1);
|
562 |
} |
563 |
|
564 |
#ifndef _WIN32
|
565 |
|
566 |
static char smb_dir[1024]; |
567 |
|
568 |
static void erase_dir(char *dir_name) |
569 |
{ |
570 |
DIR *d; |
571 |
struct dirent *de;
|
572 |
char filename[1024]; |
573 |
|
574 |
/* erase all the files in the directory */
|
575 |
if ((d = opendir(dir_name)) != 0) { |
576 |
for(;;) {
|
577 |
de = readdir(d); |
578 |
if (!de)
|
579 |
break;
|
580 |
if (strcmp(de->d_name, ".") != 0 && |
581 |
strcmp(de->d_name, "..") != 0) { |
582 |
snprintf(filename, sizeof(filename), "%s/%s", |
583 |
smb_dir, de->d_name); |
584 |
if (unlink(filename) != 0) /* is it a directory? */ |
585 |
erase_dir(filename); |
586 |
} |
587 |
} |
588 |
closedir(d); |
589 |
rmdir(dir_name); |
590 |
} |
591 |
} |
592 |
|
593 |
/* automatic user mode samba server configuration */
|
594 |
static void smb_exit(void) |
595 |
{ |
596 |
erase_dir(smb_dir); |
597 |
} |
598 |
|
599 |
/* automatic user mode samba server configuration */
|
600 |
void net_slirp_smb(const char *exported_dir) |
601 |
{ |
602 |
char smb_conf[1024]; |
603 |
char smb_cmdline[1024]; |
604 |
FILE *f; |
605 |
|
606 |
if (!slirp_inited) {
|
607 |
slirp_inited = 1;
|
608 |
slirp_init(slirp_restrict, slirp_ip); |
609 |
} |
610 |
|
611 |
/* XXX: better tmp dir construction */
|
612 |
snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%d", getpid()); |
613 |
if (mkdir(smb_dir, 0700) < 0) { |
614 |
fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
|
615 |
exit(1);
|
616 |
} |
617 |
snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf"); |
618 |
|
619 |
f = fopen(smb_conf, "w");
|
620 |
if (!f) {
|
621 |
fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
|
622 |
exit(1);
|
623 |
} |
624 |
fprintf(f, |
625 |
"[global]\n"
|
626 |
"private dir=%s\n"
|
627 |
"smb ports=0\n"
|
628 |
"socket address=127.0.0.1\n"
|
629 |
"pid directory=%s\n"
|
630 |
"lock directory=%s\n"
|
631 |
"log file=%s/log.smbd\n"
|
632 |
"smb passwd file=%s/smbpasswd\n"
|
633 |
"security = share\n"
|
634 |
"[qemu]\n"
|
635 |
"path=%s\n"
|
636 |
"read only=no\n"
|
637 |
"guest ok=yes\n",
|
638 |
smb_dir, |
639 |
smb_dir, |
640 |
smb_dir, |
641 |
smb_dir, |
642 |
smb_dir, |
643 |
exported_dir |
644 |
); |
645 |
fclose(f); |
646 |
atexit(smb_exit); |
647 |
|
648 |
snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s", |
649 |
SMBD_COMMAND, smb_conf); |
650 |
|
651 |
slirp_add_exec(0, smb_cmdline, 4, 139); |
652 |
} |
653 |
|
654 |
#endif /* !defined(_WIN32) */ |
655 |
void do_info_slirp(void) |
656 |
{ |
657 |
slirp_stats(); |
658 |
} |
659 |
|
660 |
#endif /* CONFIG_SLIRP */ |
661 |
|
662 |
#if !defined(_WIN32)
|
663 |
|
664 |
typedef struct TAPState { |
665 |
VLANClientState *vc; |
666 |
int fd;
|
667 |
char down_script[1024]; |
668 |
char down_script_arg[128]; |
669 |
} TAPState; |
670 |
|
671 |
#ifdef HAVE_IOVEC
|
672 |
static ssize_t tap_receive_iov(void *opaque, const struct iovec *iov, |
673 |
int iovcnt)
|
674 |
{ |
675 |
TAPState *s = opaque; |
676 |
ssize_t len; |
677 |
|
678 |
do {
|
679 |
len = writev(s->fd, iov, iovcnt); |
680 |
} while (len == -1 && (errno == EINTR || errno == EAGAIN)); |
681 |
|
682 |
return len;
|
683 |
} |
684 |
#endif
|
685 |
|
686 |
static void tap_receive(void *opaque, const uint8_t *buf, int size) |
687 |
{ |
688 |
TAPState *s = opaque; |
689 |
int ret;
|
690 |
for(;;) {
|
691 |
ret = write(s->fd, buf, size); |
692 |
if (ret < 0 && (errno == EINTR || errno == EAGAIN)) { |
693 |
} else {
|
694 |
break;
|
695 |
} |
696 |
} |
697 |
} |
698 |
|
699 |
static void tap_send(void *opaque) |
700 |
{ |
701 |
TAPState *s = opaque; |
702 |
uint8_t buf[4096];
|
703 |
int size;
|
704 |
|
705 |
#ifdef __sun__
|
706 |
struct strbuf sbuf;
|
707 |
int f = 0; |
708 |
sbuf.maxlen = sizeof(buf);
|
709 |
sbuf.buf = buf; |
710 |
size = getmsg(s->fd, NULL, &sbuf, &f) >=0 ? sbuf.len : -1; |
711 |
#else
|
712 |
size = read(s->fd, buf, sizeof(buf));
|
713 |
#endif
|
714 |
if (size > 0) { |
715 |
qemu_send_packet(s->vc, buf, size); |
716 |
} |
717 |
} |
718 |
|
719 |
/* fd support */
|
720 |
|
721 |
static TAPState *net_tap_fd_init(VLANState *vlan,
|
722 |
const char *model, |
723 |
const char *name, |
724 |
int fd)
|
725 |
{ |
726 |
TAPState *s; |
727 |
|
728 |
s = qemu_mallocz(sizeof(TAPState));
|
729 |
s->fd = fd; |
730 |
s->vc = qemu_new_vlan_client(vlan, model, name, tap_receive, NULL, s);
|
731 |
#ifdef HAVE_IOVEC
|
732 |
s->vc->fd_readv = tap_receive_iov; |
733 |
#endif
|
734 |
qemu_set_fd_handler(s->fd, tap_send, NULL, s);
|
735 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd); |
736 |
return s;
|
737 |
} |
738 |
|
739 |
#if defined (_BSD) || defined (__FreeBSD_kernel__)
|
740 |
static int tap_open(char *ifname, int ifname_size) |
741 |
{ |
742 |
int fd;
|
743 |
char *dev;
|
744 |
struct stat s;
|
745 |
|
746 |
TFR(fd = open("/dev/tap", O_RDWR));
|
747 |
if (fd < 0) { |
748 |
fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
|
749 |
return -1; |
750 |
} |
751 |
|
752 |
fstat(fd, &s); |
753 |
dev = devname(s.st_rdev, S_IFCHR); |
754 |
pstrcpy(ifname, ifname_size, dev); |
755 |
|
756 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
757 |
return fd;
|
758 |
} |
759 |
#elif defined(__sun__)
|
760 |
#define TUNNEWPPA (('T'<<16) | 0x0001) |
761 |
/*
|
762 |
* Allocate TAP device, returns opened fd.
|
763 |
* Stores dev name in the first arg(must be large enough).
|
764 |
*/
|
765 |
int tap_alloc(char *dev, size_t dev_size) |
766 |
{ |
767 |
int tap_fd, if_fd, ppa = -1; |
768 |
static int ip_fd = 0; |
769 |
char *ptr;
|
770 |
|
771 |
static int arp_fd = 0; |
772 |
int ip_muxid, arp_muxid;
|
773 |
struct strioctl strioc_if, strioc_ppa;
|
774 |
int link_type = I_PLINK;;
|
775 |
struct lifreq ifr;
|
776 |
char actual_name[32] = ""; |
777 |
|
778 |
memset(&ifr, 0x0, sizeof(ifr)); |
779 |
|
780 |
if( *dev ){
|
781 |
ptr = dev; |
782 |
while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++; |
783 |
ppa = atoi(ptr); |
784 |
} |
785 |
|
786 |
/* Check if IP device was opened */
|
787 |
if( ip_fd )
|
788 |
close(ip_fd); |
789 |
|
790 |
TFR(ip_fd = open("/dev/udp", O_RDWR, 0)); |
791 |
if (ip_fd < 0) { |
792 |
syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
|
793 |
return -1; |
794 |
} |
795 |
|
796 |
TFR(tap_fd = open("/dev/tap", O_RDWR, 0)); |
797 |
if (tap_fd < 0) { |
798 |
syslog(LOG_ERR, "Can't open /dev/tap");
|
799 |
return -1; |
800 |
} |
801 |
|
802 |
/* Assign a new PPA and get its unit number. */
|
803 |
strioc_ppa.ic_cmd = TUNNEWPPA; |
804 |
strioc_ppa.ic_timout = 0;
|
805 |
strioc_ppa.ic_len = sizeof(ppa);
|
806 |
strioc_ppa.ic_dp = (char *)&ppa;
|
807 |
if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0) |
808 |
syslog (LOG_ERR, "Can't assign new interface");
|
809 |
|
810 |
TFR(if_fd = open("/dev/tap", O_RDWR, 0)); |
811 |
if (if_fd < 0) { |
812 |
syslog(LOG_ERR, "Can't open /dev/tap (2)");
|
813 |
return -1; |
814 |
} |
815 |
if(ioctl(if_fd, I_PUSH, "ip") < 0){ |
816 |
syslog(LOG_ERR, "Can't push IP module");
|
817 |
return -1; |
818 |
} |
819 |
|
820 |
if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0) |
821 |
syslog(LOG_ERR, "Can't get flags\n");
|
822 |
|
823 |
snprintf (actual_name, 32, "tap%d", ppa); |
824 |
pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
|
825 |
|
826 |
ifr.lifr_ppa = ppa; |
827 |
/* Assign ppa according to the unit number returned by tun device */
|
828 |
|
829 |
if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0) |
830 |
syslog (LOG_ERR, "Can't set PPA %d", ppa);
|
831 |
if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0) |
832 |
syslog (LOG_ERR, "Can't get flags\n");
|
833 |
/* Push arp module to if_fd */
|
834 |
if (ioctl (if_fd, I_PUSH, "arp") < 0) |
835 |
syslog (LOG_ERR, "Can't push ARP module (2)");
|
836 |
|
837 |
/* Push arp module to ip_fd */
|
838 |
if (ioctl (ip_fd, I_POP, NULL) < 0) |
839 |
syslog (LOG_ERR, "I_POP failed\n");
|
840 |
if (ioctl (ip_fd, I_PUSH, "arp") < 0) |
841 |
syslog (LOG_ERR, "Can't push ARP module (3)\n");
|
842 |
/* Open arp_fd */
|
843 |
TFR(arp_fd = open ("/dev/tap", O_RDWR, 0)); |
844 |
if (arp_fd < 0) |
845 |
syslog (LOG_ERR, "Can't open %s\n", "/dev/tap"); |
846 |
|
847 |
/* Set ifname to arp */
|
848 |
strioc_if.ic_cmd = SIOCSLIFNAME; |
849 |
strioc_if.ic_timout = 0;
|
850 |
strioc_if.ic_len = sizeof(ifr);
|
851 |
strioc_if.ic_dp = (char *)𝔦
|
852 |
if (ioctl(arp_fd, I_STR, &strioc_if) < 0){ |
853 |
syslog (LOG_ERR, "Can't set ifname to arp\n");
|
854 |
} |
855 |
|
856 |
if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){ |
857 |
syslog(LOG_ERR, "Can't link TAP device to IP");
|
858 |
return -1; |
859 |
} |
860 |
|
861 |
if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0) |
862 |
syslog (LOG_ERR, "Can't link TAP device to ARP");
|
863 |
|
864 |
close (if_fd); |
865 |
|
866 |
memset(&ifr, 0x0, sizeof(ifr)); |
867 |
pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
|
868 |
ifr.lifr_ip_muxid = ip_muxid; |
869 |
ifr.lifr_arp_muxid = arp_muxid; |
870 |
|
871 |
if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0) |
872 |
{ |
873 |
ioctl (ip_fd, I_PUNLINK , arp_muxid); |
874 |
ioctl (ip_fd, I_PUNLINK, ip_muxid); |
875 |
syslog (LOG_ERR, "Can't set multiplexor id");
|
876 |
} |
877 |
|
878 |
snprintf(dev, dev_size, "tap%d", ppa);
|
879 |
return tap_fd;
|
880 |
} |
881 |
|
882 |
static int tap_open(char *ifname, int ifname_size) |
883 |
{ |
884 |
char dev[10]=""; |
885 |
int fd;
|
886 |
if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){ |
887 |
fprintf(stderr, "Cannot allocate TAP device\n");
|
888 |
return -1; |
889 |
} |
890 |
pstrcpy(ifname, ifname_size, dev); |
891 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
892 |
return fd;
|
893 |
} |
894 |
#elif defined (_AIX)
|
895 |
static int tap_open(char *ifname, int ifname_size) |
896 |
{ |
897 |
fprintf (stderr, "no tap on AIX\n");
|
898 |
return -1; |
899 |
} |
900 |
#else
|
901 |
static int tap_open(char *ifname, int ifname_size) |
902 |
{ |
903 |
struct ifreq ifr;
|
904 |
int fd, ret;
|
905 |
|
906 |
TFR(fd = open("/dev/net/tun", O_RDWR));
|
907 |
if (fd < 0) { |
908 |
fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
|
909 |
return -1; |
910 |
} |
911 |
memset(&ifr, 0, sizeof(ifr)); |
912 |
ifr.ifr_flags = IFF_TAP | IFF_NO_PI; |
913 |
if (ifname[0] != '\0') |
914 |
pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname); |
915 |
else
|
916 |
pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
|
917 |
ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
|
918 |
if (ret != 0) { |
919 |
fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
|
920 |
close(fd); |
921 |
return -1; |
922 |
} |
923 |
pstrcpy(ifname, ifname_size, ifr.ifr_name); |
924 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
925 |
return fd;
|
926 |
} |
927 |
#endif
|
928 |
|
929 |
static int launch_script(const char *setup_script, const char *ifname, int fd) |
930 |
{ |
931 |
int pid, status;
|
932 |
char *args[3]; |
933 |
char **parg;
|
934 |
|
935 |
/* try to launch network script */
|
936 |
pid = fork(); |
937 |
if (pid >= 0) { |
938 |
if (pid == 0) { |
939 |
int open_max = sysconf (_SC_OPEN_MAX), i;
|
940 |
for (i = 0; i < open_max; i++) |
941 |
if (i != STDIN_FILENO &&
|
942 |
i != STDOUT_FILENO && |
943 |
i != STDERR_FILENO && |
944 |
i != fd) |
945 |
close(i); |
946 |
|
947 |
parg = args; |
948 |
*parg++ = (char *)setup_script;
|
949 |
*parg++ = (char *)ifname;
|
950 |
*parg++ = NULL;
|
951 |
execv(setup_script, args); |
952 |
_exit(1);
|
953 |
} |
954 |
while (waitpid(pid, &status, 0) != pid); |
955 |
if (!WIFEXITED(status) ||
|
956 |
WEXITSTATUS(status) != 0) {
|
957 |
fprintf(stderr, "%s: could not launch network script\n",
|
958 |
setup_script); |
959 |
return -1; |
960 |
} |
961 |
} |
962 |
return 0; |
963 |
} |
964 |
|
965 |
static int net_tap_init(VLANState *vlan, const char *model, |
966 |
const char *name, const char *ifname1, |
967 |
const char *setup_script, const char *down_script) |
968 |
{ |
969 |
TAPState *s; |
970 |
int fd;
|
971 |
char ifname[128]; |
972 |
|
973 |
if (ifname1 != NULL) |
974 |
pstrcpy(ifname, sizeof(ifname), ifname1);
|
975 |
else
|
976 |
ifname[0] = '\0'; |
977 |
TFR(fd = tap_open(ifname, sizeof(ifname)));
|
978 |
if (fd < 0) |
979 |
return -1; |
980 |
|
981 |
if (!setup_script || !strcmp(setup_script, "no")) |
982 |
setup_script = "";
|
983 |
if (setup_script[0] != '\0') { |
984 |
if (launch_script(setup_script, ifname, fd))
|
985 |
return -1; |
986 |
} |
987 |
s = net_tap_fd_init(vlan, model, name, fd); |
988 |
if (!s)
|
989 |
return -1; |
990 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
991 |
"ifname=%s,script=%s,downscript=%s",
|
992 |
ifname, setup_script, down_script); |
993 |
if (down_script && strcmp(down_script, "no")) { |
994 |
snprintf(s->down_script, sizeof(s->down_script), "%s", down_script); |
995 |
snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname); |
996 |
} |
997 |
return 0; |
998 |
} |
999 |
|
1000 |
#endif /* !_WIN32 */ |
1001 |
|
1002 |
#if defined(CONFIG_VDE)
|
1003 |
typedef struct VDEState { |
1004 |
VLANClientState *vc; |
1005 |
VDECONN *vde; |
1006 |
} VDEState; |
1007 |
|
1008 |
static void vde_to_qemu(void *opaque) |
1009 |
{ |
1010 |
VDEState *s = opaque; |
1011 |
uint8_t buf[4096];
|
1012 |
int size;
|
1013 |
|
1014 |
size = vde_recv(s->vde, buf, sizeof(buf), 0); |
1015 |
if (size > 0) { |
1016 |
qemu_send_packet(s->vc, buf, size); |
1017 |
} |
1018 |
} |
1019 |
|
1020 |
static void vde_from_qemu(void *opaque, const uint8_t *buf, int size) |
1021 |
{ |
1022 |
VDEState *s = opaque; |
1023 |
int ret;
|
1024 |
for(;;) {
|
1025 |
ret = vde_send(s->vde, buf, size, 0);
|
1026 |
if (ret < 0 && errno == EINTR) { |
1027 |
} else {
|
1028 |
break;
|
1029 |
} |
1030 |
} |
1031 |
} |
1032 |
|
1033 |
static int net_vde_init(VLANState *vlan, const char *model, |
1034 |
const char *name, const char *sock, |
1035 |
int port, const char *group, int mode) |
1036 |
{ |
1037 |
VDEState *s; |
1038 |
char *init_group = strlen(group) ? (char *)group : NULL; |
1039 |
char *init_sock = strlen(sock) ? (char *)sock : NULL; |
1040 |
|
1041 |
struct vde_open_args args = {
|
1042 |
.port = port, |
1043 |
.group = init_group, |
1044 |
.mode = mode, |
1045 |
}; |
1046 |
|
1047 |
s = qemu_mallocz(sizeof(VDEState));
|
1048 |
s->vde = vde_open(init_sock, "QEMU", &args);
|
1049 |
if (!s->vde){
|
1050 |
free(s); |
1051 |
return -1; |
1052 |
} |
1053 |
s->vc = qemu_new_vlan_client(vlan, model, name, vde_from_qemu, NULL, s);
|
1054 |
qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
|
1055 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d", |
1056 |
sock, vde_datafd(s->vde)); |
1057 |
return 0; |
1058 |
} |
1059 |
#endif
|
1060 |
|
1061 |
/* network connection */
|
1062 |
typedef struct NetSocketState { |
1063 |
VLANClientState *vc; |
1064 |
int fd;
|
1065 |
int state; /* 0 = getting length, 1 = getting data */ |
1066 |
int index;
|
1067 |
int packet_len;
|
1068 |
uint8_t buf[4096];
|
1069 |
struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */ |
1070 |
} NetSocketState; |
1071 |
|
1072 |
typedef struct NetSocketListenState { |
1073 |
VLANState *vlan; |
1074 |
char *model;
|
1075 |
char *name;
|
1076 |
int fd;
|
1077 |
} NetSocketListenState; |
1078 |
|
1079 |
/* XXX: we consider we can send the whole packet without blocking */
|
1080 |
static void net_socket_receive(void *opaque, const uint8_t *buf, int size) |
1081 |
{ |
1082 |
NetSocketState *s = opaque; |
1083 |
uint32_t len; |
1084 |
len = htonl(size); |
1085 |
|
1086 |
send_all(s->fd, (const uint8_t *)&len, sizeof(len)); |
1087 |
send_all(s->fd, buf, size); |
1088 |
} |
1089 |
|
1090 |
static void net_socket_receive_dgram(void *opaque, const uint8_t *buf, int size) |
1091 |
{ |
1092 |
NetSocketState *s = opaque; |
1093 |
sendto(s->fd, buf, size, 0,
|
1094 |
(struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst)); |
1095 |
} |
1096 |
|
1097 |
static void net_socket_send(void *opaque) |
1098 |
{ |
1099 |
NetSocketState *s = opaque; |
1100 |
int l, size, err;
|
1101 |
uint8_t buf1[4096];
|
1102 |
const uint8_t *buf;
|
1103 |
|
1104 |
size = recv(s->fd, buf1, sizeof(buf1), 0); |
1105 |
if (size < 0) { |
1106 |
err = socket_error(); |
1107 |
if (err != EWOULDBLOCK)
|
1108 |
goto eoc;
|
1109 |
} else if (size == 0) { |
1110 |
/* end of connection */
|
1111 |
eoc:
|
1112 |
qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
1113 |
closesocket(s->fd); |
1114 |
return;
|
1115 |
} |
1116 |
buf = buf1; |
1117 |
while (size > 0) { |
1118 |
/* reassemble a packet from the network */
|
1119 |
switch(s->state) {
|
1120 |
case 0: |
1121 |
l = 4 - s->index;
|
1122 |
if (l > size)
|
1123 |
l = size; |
1124 |
memcpy(s->buf + s->index, buf, l); |
1125 |
buf += l; |
1126 |
size -= l; |
1127 |
s->index += l; |
1128 |
if (s->index == 4) { |
1129 |
/* got length */
|
1130 |
s->packet_len = ntohl(*(uint32_t *)s->buf); |
1131 |
s->index = 0;
|
1132 |
s->state = 1;
|
1133 |
} |
1134 |
break;
|
1135 |
case 1: |
1136 |
l = s->packet_len - s->index; |
1137 |
if (l > size)
|
1138 |
l = size; |
1139 |
memcpy(s->buf + s->index, buf, l); |
1140 |
s->index += l; |
1141 |
buf += l; |
1142 |
size -= l; |
1143 |
if (s->index >= s->packet_len) {
|
1144 |
qemu_send_packet(s->vc, s->buf, s->packet_len); |
1145 |
s->index = 0;
|
1146 |
s->state = 0;
|
1147 |
} |
1148 |
break;
|
1149 |
} |
1150 |
} |
1151 |
} |
1152 |
|
1153 |
static void net_socket_send_dgram(void *opaque) |
1154 |
{ |
1155 |
NetSocketState *s = opaque; |
1156 |
int size;
|
1157 |
|
1158 |
size = recv(s->fd, s->buf, sizeof(s->buf), 0); |
1159 |
if (size < 0) |
1160 |
return;
|
1161 |
if (size == 0) { |
1162 |
/* end of connection */
|
1163 |
qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
1164 |
return;
|
1165 |
} |
1166 |
qemu_send_packet(s->vc, s->buf, size); |
1167 |
} |
1168 |
|
1169 |
static int net_socket_mcast_create(struct sockaddr_in *mcastaddr) |
1170 |
{ |
1171 |
struct ip_mreq imr;
|
1172 |
int fd;
|
1173 |
int val, ret;
|
1174 |
if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
|
1175 |
fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
|
1176 |
inet_ntoa(mcastaddr->sin_addr), |
1177 |
(int)ntohl(mcastaddr->sin_addr.s_addr));
|
1178 |
return -1; |
1179 |
|
1180 |
} |
1181 |
fd = socket(PF_INET, SOCK_DGRAM, 0);
|
1182 |
if (fd < 0) { |
1183 |
perror("socket(PF_INET, SOCK_DGRAM)");
|
1184 |
return -1; |
1185 |
} |
1186 |
|
1187 |
val = 1;
|
1188 |
ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, |
1189 |
(const char *)&val, sizeof(val)); |
1190 |
if (ret < 0) { |
1191 |
perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
|
1192 |
goto fail;
|
1193 |
} |
1194 |
|
1195 |
ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr)); |
1196 |
if (ret < 0) { |
1197 |
perror("bind");
|
1198 |
goto fail;
|
1199 |
} |
1200 |
|
1201 |
/* Add host to multicast group */
|
1202 |
imr.imr_multiaddr = mcastaddr->sin_addr; |
1203 |
imr.imr_interface.s_addr = htonl(INADDR_ANY); |
1204 |
|
1205 |
ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, |
1206 |
(const char *)&imr, sizeof(struct ip_mreq)); |
1207 |
if (ret < 0) { |
1208 |
perror("setsockopt(IP_ADD_MEMBERSHIP)");
|
1209 |
goto fail;
|
1210 |
} |
1211 |
|
1212 |
/* Force mcast msgs to loopback (eg. several QEMUs in same host */
|
1213 |
val = 1;
|
1214 |
ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, |
1215 |
(const char *)&val, sizeof(val)); |
1216 |
if (ret < 0) { |
1217 |
perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
|
1218 |
goto fail;
|
1219 |
} |
1220 |
|
1221 |
socket_set_nonblock(fd); |
1222 |
return fd;
|
1223 |
fail:
|
1224 |
if (fd >= 0) |
1225 |
closesocket(fd); |
1226 |
return -1; |
1227 |
} |
1228 |
|
1229 |
static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
|
1230 |
const char *model, |
1231 |
const char *name, |
1232 |
int fd, int is_connected) |
1233 |
{ |
1234 |
struct sockaddr_in saddr;
|
1235 |
int newfd;
|
1236 |
socklen_t saddr_len; |
1237 |
NetSocketState *s; |
1238 |
|
1239 |
/* fd passed: multicast: "learn" dgram_dst address from bound address and save it
|
1240 |
* Because this may be "shared" socket from a "master" process, datagrams would be recv()
|
1241 |
* by ONLY ONE process: we must "clone" this dgram socket --jjo
|
1242 |
*/
|
1243 |
|
1244 |
if (is_connected) {
|
1245 |
if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) { |
1246 |
/* must be bound */
|
1247 |
if (saddr.sin_addr.s_addr==0) { |
1248 |
fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
|
1249 |
fd); |
1250 |
return NULL; |
1251 |
} |
1252 |
/* clone dgram socket */
|
1253 |
newfd = net_socket_mcast_create(&saddr); |
1254 |
if (newfd < 0) { |
1255 |
/* error already reported by net_socket_mcast_create() */
|
1256 |
close(fd); |
1257 |
return NULL; |
1258 |
} |
1259 |
/* clone newfd to fd, close newfd */
|
1260 |
dup2(newfd, fd); |
1261 |
close(newfd); |
1262 |
|
1263 |
} else {
|
1264 |
fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
|
1265 |
fd, strerror(errno)); |
1266 |
return NULL; |
1267 |
} |
1268 |
} |
1269 |
|
1270 |
s = qemu_mallocz(sizeof(NetSocketState));
|
1271 |
s->fd = fd; |
1272 |
|
1273 |
s->vc = qemu_new_vlan_client(vlan, model, name, net_socket_receive_dgram, NULL, s);
|
1274 |
qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
|
1275 |
|
1276 |
/* mcast: save bound address as dst */
|
1277 |
if (is_connected) s->dgram_dst=saddr;
|
1278 |
|
1279 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
1280 |
"socket: fd=%d (%s mcast=%s:%d)",
|
1281 |
fd, is_connected? "cloned" : "", |
1282 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
1283 |
return s;
|
1284 |
} |
1285 |
|
1286 |
static void net_socket_connect(void *opaque) |
1287 |
{ |
1288 |
NetSocketState *s = opaque; |
1289 |
qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
|
1290 |
} |
1291 |
|
1292 |
static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
|
1293 |
const char *model, |
1294 |
const char *name, |
1295 |
int fd, int is_connected) |
1296 |
{ |
1297 |
NetSocketState *s; |
1298 |
s = qemu_mallocz(sizeof(NetSocketState));
|
1299 |
s->fd = fd; |
1300 |
s->vc = qemu_new_vlan_client(vlan, model, name, |
1301 |
net_socket_receive, NULL, s);
|
1302 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
1303 |
"socket: fd=%d", fd);
|
1304 |
if (is_connected) {
|
1305 |
net_socket_connect(s); |
1306 |
} else {
|
1307 |
qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
|
1308 |
} |
1309 |
return s;
|
1310 |
} |
1311 |
|
1312 |
static NetSocketState *net_socket_fd_init(VLANState *vlan,
|
1313 |
const char *model, const char *name, |
1314 |
int fd, int is_connected) |
1315 |
{ |
1316 |
int so_type=-1, optlen=sizeof(so_type); |
1317 |
|
1318 |
if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type, |
1319 |
(socklen_t *)&optlen)< 0) {
|
1320 |
fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
|
1321 |
return NULL; |
1322 |
} |
1323 |
switch(so_type) {
|
1324 |
case SOCK_DGRAM:
|
1325 |
return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
|
1326 |
case SOCK_STREAM:
|
1327 |
return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
|
1328 |
default:
|
1329 |
/* who knows ... this could be a eg. a pty, do warn and continue as stream */
|
1330 |
fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
|
1331 |
return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
|
1332 |
} |
1333 |
return NULL; |
1334 |
} |
1335 |
|
1336 |
static void net_socket_accept(void *opaque) |
1337 |
{ |
1338 |
NetSocketListenState *s = opaque; |
1339 |
NetSocketState *s1; |
1340 |
struct sockaddr_in saddr;
|
1341 |
socklen_t len; |
1342 |
int fd;
|
1343 |
|
1344 |
for(;;) {
|
1345 |
len = sizeof(saddr);
|
1346 |
fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
|
1347 |
if (fd < 0 && errno != EINTR) { |
1348 |
return;
|
1349 |
} else if (fd >= 0) { |
1350 |
break;
|
1351 |
} |
1352 |
} |
1353 |
s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
|
1354 |
if (!s1) {
|
1355 |
closesocket(fd); |
1356 |
} else {
|
1357 |
snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
|
1358 |
"socket: connection from %s:%d",
|
1359 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
1360 |
} |
1361 |
} |
1362 |
|
1363 |
static int net_socket_listen_init(VLANState *vlan, |
1364 |
const char *model, |
1365 |
const char *name, |
1366 |
const char *host_str) |
1367 |
{ |
1368 |
NetSocketListenState *s; |
1369 |
int fd, val, ret;
|
1370 |
struct sockaddr_in saddr;
|
1371 |
|
1372 |
if (parse_host_port(&saddr, host_str) < 0) |
1373 |
return -1; |
1374 |
|
1375 |
s = qemu_mallocz(sizeof(NetSocketListenState));
|
1376 |
|
1377 |
fd = socket(PF_INET, SOCK_STREAM, 0);
|
1378 |
if (fd < 0) { |
1379 |
perror("socket");
|
1380 |
return -1; |
1381 |
} |
1382 |
socket_set_nonblock(fd); |
1383 |
|
1384 |
/* allow fast reuse */
|
1385 |
val = 1;
|
1386 |
setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val)); |
1387 |
|
1388 |
ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)); |
1389 |
if (ret < 0) { |
1390 |
perror("bind");
|
1391 |
return -1; |
1392 |
} |
1393 |
ret = listen(fd, 0);
|
1394 |
if (ret < 0) { |
1395 |
perror("listen");
|
1396 |
return -1; |
1397 |
} |
1398 |
s->vlan = vlan; |
1399 |
s->model = strdup(model); |
1400 |
s->name = strdup(name); |
1401 |
s->fd = fd; |
1402 |
qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
|
1403 |
return 0; |
1404 |
} |
1405 |
|
1406 |
static int net_socket_connect_init(VLANState *vlan, |
1407 |
const char *model, |
1408 |
const char *name, |
1409 |
const char *host_str) |
1410 |
{ |
1411 |
NetSocketState *s; |
1412 |
int fd, connected, ret, err;
|
1413 |
struct sockaddr_in saddr;
|
1414 |
|
1415 |
if (parse_host_port(&saddr, host_str) < 0) |
1416 |
return -1; |
1417 |
|
1418 |
fd = socket(PF_INET, SOCK_STREAM, 0);
|
1419 |
if (fd < 0) { |
1420 |
perror("socket");
|
1421 |
return -1; |
1422 |
} |
1423 |
socket_set_nonblock(fd); |
1424 |
|
1425 |
connected = 0;
|
1426 |
for(;;) {
|
1427 |
ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr)); |
1428 |
if (ret < 0) { |
1429 |
err = socket_error(); |
1430 |
if (err == EINTR || err == EWOULDBLOCK) {
|
1431 |
} else if (err == EINPROGRESS) { |
1432 |
break;
|
1433 |
#ifdef _WIN32
|
1434 |
} else if (err == WSAEALREADY) { |
1435 |
break;
|
1436 |
#endif
|
1437 |
} else {
|
1438 |
perror("connect");
|
1439 |
closesocket(fd); |
1440 |
return -1; |
1441 |
} |
1442 |
} else {
|
1443 |
connected = 1;
|
1444 |
break;
|
1445 |
} |
1446 |
} |
1447 |
s = net_socket_fd_init(vlan, model, name, fd, connected); |
1448 |
if (!s)
|
1449 |
return -1; |
1450 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
1451 |
"socket: connect to %s:%d",
|
1452 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
1453 |
return 0; |
1454 |
} |
1455 |
|
1456 |
static int net_socket_mcast_init(VLANState *vlan, |
1457 |
const char *model, |
1458 |
const char *name, |
1459 |
const char *host_str) |
1460 |
{ |
1461 |
NetSocketState *s; |
1462 |
int fd;
|
1463 |
struct sockaddr_in saddr;
|
1464 |
|
1465 |
if (parse_host_port(&saddr, host_str) < 0) |
1466 |
return -1; |
1467 |
|
1468 |
|
1469 |
fd = net_socket_mcast_create(&saddr); |
1470 |
if (fd < 0) |
1471 |
return -1; |
1472 |
|
1473 |
s = net_socket_fd_init(vlan, model, name, fd, 0);
|
1474 |
if (!s)
|
1475 |
return -1; |
1476 |
|
1477 |
s->dgram_dst = saddr; |
1478 |
|
1479 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
1480 |
"socket: mcast=%s:%d",
|
1481 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
1482 |
return 0; |
1483 |
|
1484 |
} |
1485 |
|
1486 |
/* find or alloc a new VLAN */
|
1487 |
VLANState *qemu_find_vlan(int id)
|
1488 |
{ |
1489 |
VLANState **pvlan, *vlan; |
1490 |
for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { |
1491 |
if (vlan->id == id)
|
1492 |
return vlan;
|
1493 |
} |
1494 |
vlan = qemu_mallocz(sizeof(VLANState));
|
1495 |
vlan->id = id; |
1496 |
vlan->next = NULL;
|
1497 |
pvlan = &first_vlan; |
1498 |
while (*pvlan != NULL) |
1499 |
pvlan = &(*pvlan)->next; |
1500 |
*pvlan = vlan; |
1501 |
return vlan;
|
1502 |
} |
1503 |
|
1504 |
void qemu_check_nic_model(NICInfo *nd, const char *model) |
1505 |
{ |
1506 |
const char *models[2]; |
1507 |
|
1508 |
models[0] = model;
|
1509 |
models[1] = NULL; |
1510 |
|
1511 |
qemu_check_nic_model_list(nd, models, model); |
1512 |
} |
1513 |
|
1514 |
void qemu_check_nic_model_list(NICInfo *nd, const char * const *models, |
1515 |
const char *default_model) |
1516 |
{ |
1517 |
int i, exit_status = 0; |
1518 |
|
1519 |
if (!nd->model)
|
1520 |
nd->model = strdup(default_model); |
1521 |
|
1522 |
if (strcmp(nd->model, "?") != 0) { |
1523 |
for (i = 0 ; models[i]; i++) |
1524 |
if (strcmp(nd->model, models[i]) == 0) |
1525 |
return;
|
1526 |
|
1527 |
fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
|
1528 |
exit_status = 1;
|
1529 |
} |
1530 |
|
1531 |
fprintf(stderr, "qemu: Supported NIC models: ");
|
1532 |
for (i = 0 ; models[i]; i++) |
1533 |
fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); |
1534 |
|
1535 |
exit(exit_status); |
1536 |
} |
1537 |
|
1538 |
int net_client_init(const char *device, const char *p) |
1539 |
{ |
1540 |
char buf[1024]; |
1541 |
int vlan_id, ret;
|
1542 |
VLANState *vlan; |
1543 |
char *name = NULL; |
1544 |
|
1545 |
vlan_id = 0;
|
1546 |
if (get_param_value(buf, sizeof(buf), "vlan", p)) { |
1547 |
vlan_id = strtol(buf, NULL, 0); |
1548 |
} |
1549 |
vlan = qemu_find_vlan(vlan_id); |
1550 |
if (!vlan) {
|
1551 |
fprintf(stderr, "Could not create vlan %d\n", vlan_id);
|
1552 |
return -1; |
1553 |
} |
1554 |
if (get_param_value(buf, sizeof(buf), "name", p)) { |
1555 |
name = strdup(buf); |
1556 |
} |
1557 |
if (!strcmp(device, "nic")) { |
1558 |
NICInfo *nd; |
1559 |
uint8_t *macaddr; |
1560 |
|
1561 |
if (nb_nics >= MAX_NICS) {
|
1562 |
fprintf(stderr, "Too Many NICs\n");
|
1563 |
return -1; |
1564 |
} |
1565 |
nd = &nd_table[nb_nics]; |
1566 |
macaddr = nd->macaddr; |
1567 |
macaddr[0] = 0x52; |
1568 |
macaddr[1] = 0x54; |
1569 |
macaddr[2] = 0x00; |
1570 |
macaddr[3] = 0x12; |
1571 |
macaddr[4] = 0x34; |
1572 |
macaddr[5] = 0x56 + nb_nics; |
1573 |
|
1574 |
if (get_param_value(buf, sizeof(buf), "macaddr", p)) { |
1575 |
if (parse_macaddr(macaddr, buf) < 0) { |
1576 |
fprintf(stderr, "invalid syntax for ethernet address\n");
|
1577 |
return -1; |
1578 |
} |
1579 |
} |
1580 |
if (get_param_value(buf, sizeof(buf), "model", p)) { |
1581 |
nd->model = strdup(buf); |
1582 |
} |
1583 |
nd->vlan = vlan; |
1584 |
nd->name = name; |
1585 |
name = NULL;
|
1586 |
nb_nics++; |
1587 |
vlan->nb_guest_devs++; |
1588 |
ret = 0;
|
1589 |
} else
|
1590 |
if (!strcmp(device, "none")) { |
1591 |
/* does nothing. It is needed to signal that no network cards
|
1592 |
are wanted */
|
1593 |
ret = 0;
|
1594 |
} else
|
1595 |
#ifdef CONFIG_SLIRP
|
1596 |
if (!strcmp(device, "user")) { |
1597 |
if (get_param_value(buf, sizeof(buf), "hostname", p)) { |
1598 |
pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf);
|
1599 |
} |
1600 |
if (get_param_value(buf, sizeof(buf), "restrict", p)) { |
1601 |
slirp_restrict = (buf[0] == 'y') ? 1 : 0; |
1602 |
} |
1603 |
if (get_param_value(buf, sizeof(buf), "ip", p)) { |
1604 |
slirp_ip = strdup(buf); |
1605 |
} |
1606 |
vlan->nb_host_devs++; |
1607 |
ret = net_slirp_init(vlan, device, name); |
1608 |
} else
|
1609 |
#endif
|
1610 |
#ifdef _WIN32
|
1611 |
if (!strcmp(device, "tap")) { |
1612 |
char ifname[64]; |
1613 |
if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) { |
1614 |
fprintf(stderr, "tap: no interface name\n");
|
1615 |
return -1; |
1616 |
} |
1617 |
vlan->nb_host_devs++; |
1618 |
ret = tap_win32_init(vlan, device, name, ifname); |
1619 |
} else
|
1620 |
#elif defined (_AIX)
|
1621 |
#else
|
1622 |
if (!strcmp(device, "tap")) { |
1623 |
char ifname[64]; |
1624 |
char setup_script[1024], down_script[1024]; |
1625 |
int fd;
|
1626 |
vlan->nb_host_devs++; |
1627 |
if (get_param_value(buf, sizeof(buf), "fd", p) > 0) { |
1628 |
fd = strtol(buf, NULL, 0); |
1629 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
1630 |
ret = -1;
|
1631 |
if (net_tap_fd_init(vlan, device, name, fd))
|
1632 |
ret = 0;
|
1633 |
} else {
|
1634 |
if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) { |
1635 |
ifname[0] = '\0'; |
1636 |
} |
1637 |
if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) { |
1638 |
pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
|
1639 |
} |
1640 |
if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) { |
1641 |
pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
|
1642 |
} |
1643 |
ret = net_tap_init(vlan, device, name, ifname, setup_script, down_script); |
1644 |
} |
1645 |
} else
|
1646 |
#endif
|
1647 |
if (!strcmp(device, "socket")) { |
1648 |
if (get_param_value(buf, sizeof(buf), "fd", p) > 0) { |
1649 |
int fd;
|
1650 |
fd = strtol(buf, NULL, 0); |
1651 |
ret = -1;
|
1652 |
if (net_socket_fd_init(vlan, device, name, fd, 1)) |
1653 |
ret = 0;
|
1654 |
} else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) { |
1655 |
ret = net_socket_listen_init(vlan, device, name, buf); |
1656 |
} else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) { |
1657 |
ret = net_socket_connect_init(vlan, device, name, buf); |
1658 |
} else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) { |
1659 |
ret = net_socket_mcast_init(vlan, device, name, buf); |
1660 |
} else {
|
1661 |
fprintf(stderr, "Unknown socket options: %s\n", p);
|
1662 |
return -1; |
1663 |
} |
1664 |
vlan->nb_host_devs++; |
1665 |
} else
|
1666 |
#ifdef CONFIG_VDE
|
1667 |
if (!strcmp(device, "vde")) { |
1668 |
char vde_sock[1024], vde_group[512]; |
1669 |
int vde_port, vde_mode;
|
1670 |
vlan->nb_host_devs++; |
1671 |
if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) { |
1672 |
vde_sock[0] = '\0'; |
1673 |
} |
1674 |
if (get_param_value(buf, sizeof(buf), "port", p) > 0) { |
1675 |
vde_port = strtol(buf, NULL, 10); |
1676 |
} else {
|
1677 |
vde_port = 0;
|
1678 |
} |
1679 |
if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) { |
1680 |
vde_group[0] = '\0'; |
1681 |
} |
1682 |
if (get_param_value(buf, sizeof(buf), "mode", p) > 0) { |
1683 |
vde_mode = strtol(buf, NULL, 8); |
1684 |
} else {
|
1685 |
vde_mode = 0700;
|
1686 |
} |
1687 |
ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode); |
1688 |
} else
|
1689 |
#endif
|
1690 |
{ |
1691 |
fprintf(stderr, "Unknown network device: %s\n", device);
|
1692 |
if (name)
|
1693 |
free(name); |
1694 |
return -1; |
1695 |
} |
1696 |
if (ret < 0) { |
1697 |
fprintf(stderr, "Could not initialize device '%s'\n", device);
|
1698 |
} |
1699 |
if (name)
|
1700 |
free(name); |
1701 |
return ret;
|
1702 |
} |
1703 |
|
1704 |
int net_client_parse(const char *str) |
1705 |
{ |
1706 |
const char *p; |
1707 |
char *q;
|
1708 |
char device[64]; |
1709 |
|
1710 |
p = str; |
1711 |
q = device; |
1712 |
while (*p != '\0' && *p != ',') { |
1713 |
if ((q - device) < sizeof(device) - 1) |
1714 |
*q++ = *p; |
1715 |
p++; |
1716 |
} |
1717 |
*q = '\0';
|
1718 |
if (*p == ',') |
1719 |
p++; |
1720 |
|
1721 |
return net_client_init(device, p);
|
1722 |
} |
1723 |
|
1724 |
void do_info_network(void) |
1725 |
{ |
1726 |
VLANState *vlan; |
1727 |
VLANClientState *vc; |
1728 |
|
1729 |
for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { |
1730 |
term_printf("VLAN %d devices:\n", vlan->id);
|
1731 |
for(vc = vlan->first_client; vc != NULL; vc = vc->next) |
1732 |
term_printf(" %s: %s\n", vc->name, vc->info_str);
|
1733 |
} |
1734 |
} |
1735 |
|
1736 |
int do_set_link(const char *name, const char *up_or_down) |
1737 |
{ |
1738 |
VLANState *vlan; |
1739 |
VLANClientState *vc = NULL;
|
1740 |
|
1741 |
for (vlan = first_vlan; vlan != NULL; vlan = vlan->next) |
1742 |
for (vc = vlan->first_client; vc != NULL; vc = vc->next) |
1743 |
if (strcmp(vc->name, name) == 0) |
1744 |
goto done;
|
1745 |
done:
|
1746 |
|
1747 |
if (!vc) {
|
1748 |
term_printf("could not find network device '%s'", name);
|
1749 |
return 0; |
1750 |
} |
1751 |
|
1752 |
if (strcmp(up_or_down, "up") == 0) |
1753 |
vc->link_down = 0;
|
1754 |
else if (strcmp(up_or_down, "down") == 0) |
1755 |
vc->link_down = 1;
|
1756 |
else
|
1757 |
term_printf("invalid link status '%s'; only 'up' or 'down' valid\n",
|
1758 |
up_or_down); |
1759 |
|
1760 |
if (vc->link_status_changed)
|
1761 |
vc->link_status_changed(vc); |
1762 |
|
1763 |
return 1; |
1764 |
} |
1765 |
|
1766 |
void net_cleanup(void) |
1767 |
{ |
1768 |
VLANState *vlan; |
1769 |
|
1770 |
#if !defined(_WIN32)
|
1771 |
/* close network clients */
|
1772 |
for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { |
1773 |
VLANClientState *vc; |
1774 |
|
1775 |
for(vc = vlan->first_client; vc != NULL; vc = vc->next) { |
1776 |
if (vc->fd_read == tap_receive) {
|
1777 |
TAPState *s = vc->opaque; |
1778 |
|
1779 |
if (s->down_script[0]) |
1780 |
launch_script(s->down_script, s->down_script_arg, s->fd); |
1781 |
} |
1782 |
#if defined(CONFIG_VDE)
|
1783 |
if (vc->fd_read == vde_from_qemu) {
|
1784 |
VDEState *s = vc->opaque; |
1785 |
vde_close(s->vde); |
1786 |
} |
1787 |
#endif
|
1788 |
} |
1789 |
} |
1790 |
#endif
|
1791 |
} |
1792 |
|
1793 |
void net_client_check(void) |
1794 |
{ |
1795 |
VLANState *vlan; |
1796 |
|
1797 |
for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { |
1798 |
if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0) |
1799 |
continue;
|
1800 |
if (vlan->nb_guest_devs == 0) |
1801 |
fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
|
1802 |
if (vlan->nb_host_devs == 0) |
1803 |
fprintf(stderr, |
1804 |
"Warning: vlan %d is not connected to host network\n",
|
1805 |
vlan->id); |
1806 |
} |
1807 |
} |