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port redirection support

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1054 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2004-08-25 22:12:49 +00:00
parent a3504c87ca
commit 9bf05444b2
7 changed files with 149 additions and 9 deletions
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86
vl.c
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@ -1382,6 +1382,78 @@ static int net_slirp_init(NetDriverState *nd)
return 0;
}
static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
{
const char *p, *p1;
int len;
p = *pp;
p1 = strchr(p, sep);
if (!p1)
return -1;
len = p1 - p;
p1++;
if (buf_size > 0) {
if (len > buf_size - 1)
len = buf_size - 1;
memcpy(buf, p, len);
buf[len] = '\0';
}
*pp = p1;
return 0;
}
static void net_slirp_redir(const char *redir_str)
{
int is_udp;
char buf[256], *r;
const char *p;
struct in_addr guest_addr;
int host_port, guest_port;
if (!slirp_inited) {
slirp_inited = 1;
slirp_init();
}
p = redir_str;
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
goto fail;
if (!strcmp(buf, "tcp")) {
is_udp = 0;
} else if (!strcmp(buf, "udp")) {
is_udp = 1;
} else {
goto fail;
}
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
goto fail;
host_port = strtol(buf, &r, 0);
if (r == buf)
goto fail;
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
goto fail;
if (buf[0] == '\0') {
pstrcpy(buf, sizeof(buf), "10.0.2.15");
}
if (!inet_aton(buf, &guest_addr))
goto fail;
guest_port = strtol(p, &r, 0);
if (r == p)
goto fail;
if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) {
fprintf(stderr, "qemu: could not set up redirection\n");
exit(1);
}
return;
fail:
fprintf(stderr, "qemu: syntax: -redir [tcp|udp]:host-port:[guest-host]:guest-port\n");
exit(1);
}
#endif /* CONFIG_SLIRP */
#if !defined(_WIN32)
@ -2334,7 +2406,9 @@ void help(void)
"-tun-fd fd use this fd as already opened tap/tun interface\n"
#ifdef CONFIG_SLIRP
"-user-net use user mode network stack [default if no tap/tun script]\n"
"-tftp prefix allow tftp access to files starting with prefix [only with -user-net enabled]\n"
"-tftp prefix allow tftp access to files starting with prefix [-user-net]\n"
"-redir [tcp|udp]:host-port:[guest-host]:guest-port\n"
" redirect TCP or UDP connections from host to guest [-user-net]\n"
#endif
"-dummy-net use dummy network stack\n"
"\n"
@ -2410,6 +2484,7 @@ enum {
QEMU_OPTION_tun_fd,
QEMU_OPTION_user_net,
QEMU_OPTION_tftp,
QEMU_OPTION_redir,
QEMU_OPTION_dummy_net,
QEMU_OPTION_kernel,
@ -2463,6 +2538,7 @@ const QEMUOption qemu_options[] = {
#ifdef CONFIG_SLIRP
{ "user-net", 0, QEMU_OPTION_user_net },
{ "tftp", HAS_ARG, QEMU_OPTION_tftp },
{ "redir", HAS_ARG, QEMU_OPTION_redir },
#endif
{ "dummy-net", 0, QEMU_OPTION_dummy_net },
@ -2756,14 +2832,14 @@ int main(int argc, char **argv)
break;
#ifdef CONFIG_SLIRP
case QEMU_OPTION_tftp:
{
extern const char *tftp_prefix;
tftp_prefix = optarg;
}
break;
break;
case QEMU_OPTION_user_net:
net_if_type = NET_IF_USER;
break;
case QEMU_OPTION_redir:
net_slirp_redir(optarg);
break;
#endif
case QEMU_OPTION_dummy_net:
net_if_type = NET_IF_DUMMY;