#include "sysemu/char.h"
#include "slirp.h"
#include "hw/hw.h"
+#include "qemu/cutils.h"
+
+#ifndef _WIN32
+#include <net/if.h>
+#endif
/* host loopback address */
struct in_addr loopback_addr;
QTAILQ_HEAD_INITIALIZER(slirp_instances);
static struct in_addr dns_addr;
+#ifndef _WIN32
+static struct in6_addr dns6_addr;
+#endif
static u_int dns_addr_time;
+#ifndef _WIN32
+static u_int dns6_addr_time;
+#endif
#define TIMEOUT_FAST 2 /* milliseconds */
#define TIMEOUT_SLOW 499 /* milliseconds */
return 0;
}
+int get_dns6_addr(struct in6_addr *pdns6_addr, uint32_t *scope_id)
+{
+ return -1;
+}
+
static void winsock_cleanup(void)
{
WSACleanup();
#else
-static struct stat dns_addr_stat;
+static int get_dns_addr_cached(void *pdns_addr, void *cached_addr,
+ socklen_t addrlen,
+ struct stat *cached_stat, u_int *cached_time)
+{
+ struct stat old_stat;
+ if (curtime - *cached_time < TIMEOUT_DEFAULT) {
+ memcpy(pdns_addr, cached_addr, addrlen);
+ return 0;
+ }
+ old_stat = *cached_stat;
+ if (stat("/etc/resolv.conf", cached_stat) != 0) {
+ return -1;
+ }
+ if (cached_stat->st_dev == old_stat.st_dev
+ && cached_stat->st_ino == old_stat.st_ino
+ && cached_stat->st_size == old_stat.st_size
+ && cached_stat->st_mtime == old_stat.st_mtime) {
+ memcpy(pdns_addr, cached_addr, addrlen);
+ return 0;
+ }
+ return 1;
+}
-int get_dns_addr(struct in_addr *pdns_addr)
+static int get_dns_addr_resolv_conf(int af, void *pdns_addr, void *cached_addr,
+ socklen_t addrlen, uint32_t *scope_id,
+ u_int *cached_time)
{
char buff[512];
char buff2[257];
FILE *f;
int found = 0;
- struct in_addr tmp_addr;
-
- if (dns_addr.s_addr != 0) {
- struct stat old_stat;
- if ((curtime - dns_addr_time) < TIMEOUT_DEFAULT) {
- *pdns_addr = dns_addr;
- return 0;
- }
- old_stat = dns_addr_stat;
- if (stat("/etc/resolv.conf", &dns_addr_stat) != 0)
- return -1;
- if ((dns_addr_stat.st_dev == old_stat.st_dev)
- && (dns_addr_stat.st_ino == old_stat.st_ino)
- && (dns_addr_stat.st_size == old_stat.st_size)
- && (dns_addr_stat.st_mtime == old_stat.st_mtime)) {
- *pdns_addr = dns_addr;
- return 0;
- }
- }
+ void *tmp_addr = alloca(addrlen);
+ unsigned if_index;
f = fopen("/etc/resolv.conf", "r");
if (!f)
#endif
while (fgets(buff, 512, f) != NULL) {
if (sscanf(buff, "nameserver%*[ \t]%256s", buff2) == 1) {
- if (!inet_aton(buff2, &tmp_addr))
+ char *c = strchr(buff2, '%');
+ if (c) {
+ if_index = if_nametoindex(c + 1);
+ *c = '\0';
+ } else {
+ if_index = 0;
+ }
+
+ if (!inet_pton(af, buff2, tmp_addr)) {
continue;
+ }
/* If it's the first one, set it to dns_addr */
if (!found) {
- *pdns_addr = tmp_addr;
- dns_addr = tmp_addr;
- dns_addr_time = curtime;
+ memcpy(pdns_addr, tmp_addr, addrlen);
+ memcpy(cached_addr, tmp_addr, addrlen);
+ if (scope_id) {
+ *scope_id = if_index;
+ }
+ *cached_time = curtime;
}
#ifdef DEBUG
else
break;
}
#ifdef DEBUG
- else
- fprintf(stderr, "%s", inet_ntoa(tmp_addr));
+ else {
+ char s[INET6_ADDRSTRLEN];
+ char *res = inet_ntop(af, tmp_addr, s, sizeof(s));
+ if (!res) {
+ res = "(string conversion error)";
+ }
+ fprintf(stderr, "%s", res);
+ }
#endif
}
}
return 0;
}
+int get_dns_addr(struct in_addr *pdns_addr)
+{
+ static struct stat dns_addr_stat;
+
+ if (dns_addr.s_addr != 0) {
+ int ret;
+ ret = get_dns_addr_cached(pdns_addr, &dns_addr, sizeof(dns_addr),
+ &dns_addr_stat, &dns_addr_time);
+ if (ret <= 0) {
+ return ret;
+ }
+ }
+ return get_dns_addr_resolv_conf(AF_INET, pdns_addr, &dns_addr,
+ sizeof(dns_addr), NULL, &dns_addr_time);
+}
+
+int get_dns6_addr(struct in6_addr *pdns6_addr, uint32_t *scope_id)
+{
+ static struct stat dns6_addr_stat;
+
+ if (!in6_zero(&dns6_addr)) {
+ int ret;
+ ret = get_dns_addr_cached(pdns6_addr, &dns6_addr, sizeof(dns6_addr),
+ &dns6_addr_stat, &dns6_addr_time);
+ if (ret <= 0) {
+ return ret;
+ }
+ }
+ return get_dns_addr_resolv_conf(AF_INET6, pdns6_addr, &dns6_addr,
+ sizeof(dns6_addr),
+ scope_id, &dns6_addr_time);
+}
+
#endif
static void slirp_init_once(void)
static void slirp_state_save(QEMUFile *f, void *opaque);
static int slirp_state_load(QEMUFile *f, void *opaque, int version_id);
-Slirp *slirp_init(int restricted, struct in_addr vnetwork,
+Slirp *slirp_init(int restricted, bool in_enabled, struct in_addr vnetwork,
struct in_addr vnetmask, struct in_addr vhost,
+ bool in6_enabled,
struct in6_addr vprefix_addr6, uint8_t vprefix_len,
struct in6_addr vhost6, const char *vhostname,
const char *tftp_path, const char *bootfile,
slirp->grand = g_rand_new();
slirp->restricted = restricted;
+ slirp->in_enabled = in_enabled;
+ slirp->in6_enabled = in6_enabled;
+
if_init(slirp);
ip_init(slirp);
ip6_init(slirp);
* test for G_IO_IN below if this succeeds
*/
if (revents & G_IO_PRI) {
- sorecvoob(so);
+ ret = sorecvoob(so);
+ if (ret < 0) {
+ /* Socket error might have resulted in the socket being
+ * removed, do not try to do anything more with it. */
+ continue;
+ }
}
/*
* Check sockets for reading
if (ret > 0) {
tcp_output(sototcpcb(so));
}
+ if (ret < 0) {
+ /* Socket error might have resulted in the socket being
+ * removed, do not try to do anything more with it. */
+ continue;
+ }
}
/*
int ar_op;
struct ex_list *ex_ptr;
+ if (!slirp->in_enabled) {
+ return;
+ }
+
ar_op = ntohs(ah->ar_op);
switch(ar_op) {
case ARPOP_REQUEST:
qemu_put_be16(f, so->so_fport);
break;
default:
- error_report(
- "so_ffamily unknown, unable to save so_faddr and so_fport\n");
+ error_report("so_ffamily unknown, unable to save so_faddr and"
+ " so_fport");
}
qemu_put_be16(f, so->so_lfamily);
switch (so->so_lfamily) {
qemu_put_be16(f, so->so_lport);
break;
default:
- error_report(
- "so_ffamily unknown, unable to save so_laddr and so_lport\n");
+ error_report("so_ffamily unknown, unable to save so_laddr and"
+ " so_lport");
}
qemu_put_byte(f, so->so_iptos);
qemu_put_byte(f, so->so_emu);
return 0;
}
-static int slirp_socket_load(QEMUFile *f, struct socket *so)
+static int slirp_socket_load(QEMUFile *f, struct socket *so, int version_id)
{
if (tcp_attach(so) < 0)
return -ENOMEM;
so->so_urgc = qemu_get_be32(f);
- so->so_ffamily = qemu_get_be16(f);
- switch (so->so_ffamily) {
- case AF_INET:
+ if (version_id <= 3) {
+ so->so_ffamily = AF_INET;
so->so_faddr.s_addr = qemu_get_be32(f);
- so->so_fport = qemu_get_be16(f);
- break;
- default:
- error_report(
- "so_ffamily unknown, unable to restore so_faddr and so_lport\n");
- }
- so->so_lfamily = qemu_get_be16(f);
- switch (so->so_lfamily) {
- case AF_INET:
so->so_laddr.s_addr = qemu_get_be32(f);
+ so->so_fport = qemu_get_be16(f);
so->so_lport = qemu_get_be16(f);
- break;
- default:
- error_report(
- "so_ffamily unknown, unable to restore so_laddr and so_lport\n");
+ } else {
+ so->so_ffamily = qemu_get_be16(f);
+ switch (so->so_ffamily) {
+ case AF_INET:
+ so->so_faddr.s_addr = qemu_get_be32(f);
+ so->so_fport = qemu_get_be16(f);
+ break;
+ default:
+ error_report(
+ "so_ffamily unknown, unable to restore so_faddr and so_lport");
+ }
+ so->so_lfamily = qemu_get_be16(f);
+ switch (so->so_lfamily) {
+ case AF_INET:
+ so->so_laddr.s_addr = qemu_get_be32(f);
+ so->so_lport = qemu_get_be16(f);
+ break;
+ default:
+ error_report(
+ "so_ffamily unknown, unable to restore so_laddr and so_lport");
+ }
}
so->so_iptos = qemu_get_byte(f);
so->so_emu = qemu_get_byte(f);
if (!so)
return -ENOMEM;
- ret = slirp_socket_load(f, so);
+ ret = slirp_socket_load(f, so, version_id);
if (ret < 0)
return ret;
projects / mirror_qemu.git / blobdiff