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Diffstat (limited to 'src/inet.c')
-rw-r--r--src/inet.c190
1 files changed, 170 insertions, 20 deletions
diff --git a/src/inet.c b/src/inet.c
index d54760d3..08b1a25f 100644
--- a/src/inet.c
+++ b/src/inet.c
@@ -25,7 +25,6 @@
#include <config.h>
#endif
-#define _GNU_SOURCE
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
@@ -262,6 +261,40 @@ char *connman_inet_ifname2addr(const char *name)
}
#endif
+bool __connman_inet_is_any_addr(const char *address, int family)
+{
+ bool ret = false;
+ struct addrinfo hints;
+ struct addrinfo *result = NULL;
+ struct sockaddr_in6 *in6 = NULL;
+ struct sockaddr_in *in4 = NULL;
+
+ if (!address || !*address)
+ goto out;
+
+ memset(&hints, 0, sizeof(struct addrinfo));
+
+ hints.ai_family = family;
+
+ if (getaddrinfo(address, NULL, &hints, &result))
+ goto out;
+
+ if (result) {
+ if (result->ai_family == AF_INET6) {
+ in6 = (struct sockaddr_in6*)result->ai_addr;
+ ret = IN6_IS_ADDR_UNSPECIFIED(&in6->sin6_addr);
+ } else if (result->ai_family == AF_INET) {
+ in4 = (struct sockaddr_in*)result->ai_addr;
+ ret = in4->sin_addr.s_addr == INADDR_ANY;
+ }
+
+ freeaddrinfo(result);
+ }
+
+out:
+ return ret;
+}
+
int connman_inet_ifindex(const char *name)
{
struct ifreq ifr;
@@ -442,6 +475,40 @@ void connman_inet_update_device_ident(struct connman_device *device)
}
#endif
+bool connman_inet_is_ifup(int index)
+{
+ int sk;
+ struct ifreq ifr;
+ bool ret = false;
+
+ sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
+ if (sk < 0) {
+ connman_warn("Failed to open socket");
+ return false;
+ }
+
+ memset(&ifr, 0, sizeof(ifr));
+ ifr.ifr_ifindex = index;
+
+ if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
+ connman_warn("Failed to get interface name for interface %d", index);
+ goto done;
+ }
+
+ if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
+ connman_warn("Failed to get interface flags for index %d", index);
+ goto done;
+ }
+
+ if (ifr.ifr_flags & IFF_UP)
+ ret = true;
+
+done:
+ close(sk);
+
+ return ret;
+}
+
struct in6_ifreq {
struct in6_addr ifr6_addr;
__u32 ifr6_prefixlen;
@@ -590,7 +657,17 @@ int connman_inet_add_network_route(int index, const char *host,
memset(&rt, 0, sizeof(rt));
rt.rt_flags = RTF_UP;
- if (gateway)
+
+ /*
+ * Set RTF_GATEWAY only when gateway is set and the gateway IP address
+ * is not IPv4 any address (0.0.0.0). If the given gateway IP address is
+ * any address adding of route will fail when RTF_GATEWAY set. Passing
+ * gateway as NULL or INADDR_ANY should have the same effect. Setting
+ * the gateway address later to the struct is not affected by this,
+ * since given IPv4 any address (0.0.0.0) equals the value set with
+ * INADDR_ANY.
+ */
+ if (gateway && !__connman_inet_is_any_addr(gateway, AF_INET))
rt.rt_flags |= RTF_GATEWAY;
if (!netmask)
rt.rt_flags |= RTF_HOST;
@@ -753,10 +830,17 @@ int connman_inet_add_ipv6_network_route(int index, const char *host,
rt.rtmsg_flags = RTF_UP | RTF_HOST;
- if (gateway) {
+ /*
+ * Set RTF_GATEWAY only when gateway is set, the gateway IP address is
+ * not IPv6 any address (e.g., ::) and the address is valid (conversion
+ * succeeds). If the given gateway IP address is any address then
+ * adding of route will fail when RTF_GATEWAY set. Passing gateway as
+ * NULL or IPv6 any address should have the same effect.
+ */
+
+ if (gateway && !__connman_inet_is_any_addr(gateway, AF_INET6) &&
+ inet_pton(AF_INET6, gateway, &rt.rtmsg_gateway) > 0)
rt.rtmsg_flags |= RTF_GATEWAY;
- inet_pton(AF_INET6, gateway, &rt.rtmsg_gateway);
- }
rt.rtmsg_metric = 1;
rt.rtmsg_ifindex = index;
@@ -2433,6 +2517,7 @@ static gboolean inet_rtnl_event(GIOChannel *chan, GIOCondition cond,
return TRUE;
cleanup:
+ rtnl_data->callback(NULL, rtnl_data->user_data);
inet_rtnl_cleanup(rtnl_data);
return TRUE;
}
@@ -2585,8 +2670,6 @@ out:
data->callback(addr, index, data->user_data);
g_free(data);
-
- return;
}
/*
@@ -2678,9 +2761,10 @@ int connman_inet_check_ipaddress(const char *host)
addr = NULL;
result = getaddrinfo(host, NULL, &hints, &addr);
- if (result == 0)
+ if (result == 0) {
result = addr->ai_family;
- freeaddrinfo(addr);
+ freeaddrinfo(addr);
+ }
return result;
}
@@ -2799,8 +2883,7 @@ char **__connman_inet_get_running_interfaces(void)
g_free(ifr);
- if (count < numif)
- {
+ if (count < numif) {
char **prev_result = result;
result = g_try_realloc(result, (count + 1) * sizeof(char *));
if (!result) {
@@ -2883,6 +2966,41 @@ out:
return err;
}
+int __connman_inet_get_interface_mac_address(int index, uint8_t *mac_address)
+{
+ struct ifreq ifr;
+ int sk, err;
+ int ret = -EINVAL;
+
+ sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
+ if (sk < 0) {
+ DBG("Open socket error");
+ return ret;
+ }
+
+ memset(&ifr, 0, sizeof(ifr));
+ ifr.ifr_ifindex = index;
+
+ err = ioctl(sk, SIOCGIFNAME, &ifr);
+ if (err < 0) {
+ DBG("Get interface name error");
+ goto done;
+ }
+
+ err = ioctl(sk, SIOCGIFHWADDR, &ifr);
+ if (err < 0) {
+ DBG("Get MAC address error");
+ goto done;
+ }
+
+ memcpy(mac_address, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
+ ret = 0;
+
+done:
+ close(sk);
+ return ret;
+}
+
static int iprule_modify(int cmd, int family, uint32_t table_id,
uint32_t fwmark)
{
@@ -2945,12 +3063,15 @@ int __connman_inet_del_fwmark_rule(uint32_t table_id, int family, uint32_t fwmar
}
static int iproute_default_modify(int cmd, uint32_t table_id, int ifindex,
- const char *gateway)
+ const char *gateway, unsigned char prefixlen)
{
struct __connman_inet_rtnl_handle rth;
unsigned char buf[sizeof(struct in6_addr)];
int ret, len;
int family = connman_inet_check_ipaddress(gateway);
+ char *dst = NULL;
+
+ DBG("gateway %s/%u table %u", gateway, prefixlen, table_id);
switch (family) {
case AF_INET:
@@ -2963,7 +3084,19 @@ static int iproute_default_modify(int cmd, uint32_t table_id, int ifindex,
return -EINVAL;
}
- ret = inet_pton(family, gateway, buf);
+ if (prefixlen) {
+ struct in_addr ipv4_subnet_addr, ipv4_mask;
+
+ memset(&ipv4_subnet_addr, 0, sizeof(ipv4_subnet_addr));
+ ipv4_mask.s_addr = htonl((0xffffffff << (32 - prefixlen)) & 0xffffffff);
+ ipv4_subnet_addr.s_addr = inet_addr(gateway);
+ ipv4_subnet_addr.s_addr &= ipv4_mask.s_addr;
+
+ dst = g_strdup(inet_ntoa(ipv4_subnet_addr));
+ }
+
+ ret = inet_pton(family, dst ? dst : gateway, buf);
+ g_free(dst);
if (ret <= 0)
return -EINVAL;
@@ -2978,9 +3111,11 @@ static int iproute_default_modify(int cmd, uint32_t table_id, int ifindex,
rth.req.u.r.rt.rtm_protocol = RTPROT_BOOT;
rth.req.u.r.rt.rtm_scope = RT_SCOPE_UNIVERSE;
rth.req.u.r.rt.rtm_type = RTN_UNICAST;
+ rth.req.u.r.rt.rtm_dst_len = prefixlen;
+
+ __connman_inet_rtnl_addattr_l(&rth.req.n, sizeof(rth.req),
+ prefixlen > 0 ? RTA_DST : RTA_GATEWAY, buf, len);
- __connman_inet_rtnl_addattr_l(&rth.req.n, sizeof(rth.req), RTA_GATEWAY,
- buf, len);
if (table_id < 256) {
rth.req.u.r.rt.rtm_table = table_id;
} else {
@@ -3009,7 +3144,14 @@ int __connman_inet_add_default_to_table(uint32_t table_id, int ifindex,
{
/* ip route add default via 1.2.3.4 dev wlan0 table 1234 */
- return iproute_default_modify(RTM_NEWROUTE, table_id, ifindex, gateway);
+ return iproute_default_modify(RTM_NEWROUTE, table_id, ifindex, gateway, 0);
+}
+
+int __connman_inet_add_subnet_to_table(uint32_t table_id, int ifindex,
+ const char *gateway, unsigned char prefixlen)
+{
+ /* ip route add 1.2.3.4/24 dev eth0 table 1234 */
+ return iproute_default_modify(RTM_NEWROUTE, table_id, ifindex, gateway, prefixlen);
}
int __connman_inet_del_default_from_table(uint32_t table_id, int ifindex,
@@ -3017,7 +3159,14 @@ int __connman_inet_del_default_from_table(uint32_t table_id, int ifindex,
{
/* ip route del default via 1.2.3.4 dev wlan0 table 1234 */
- return iproute_default_modify(RTM_DELROUTE, table_id, ifindex, gateway);
+ return iproute_default_modify(RTM_DELROUTE, table_id, ifindex, gateway, 0);
+}
+
+int __connman_inet_del_subnet_from_table(uint32_t table_id, int ifindex,
+ const char *gateway, unsigned char prefixlen)
+{
+ /* ip route del 1.2.3.4/24 dev eth0 table 1234 */
+ return iproute_default_modify(RTM_DELROUTE, table_id, ifindex, gateway, prefixlen);
}
int __connman_inet_get_interface_ll_address(int index, int family,
@@ -3152,10 +3301,8 @@ static int get_nfs_server_ip(const char *cmdline_file, const char *pnp_file,
pnp_file, error->message);
goto out;
}
- } else {
- connman_error("%s: File %s doesn't exist\n", __func__, pnp_file);
+ } else
goto out;
- }
len = strlen(cmdline);
if (len <= 1) {
@@ -3351,6 +3498,9 @@ char **__connman_inet_get_pnp_nameservers(const char *pnp_file)
if (!pnp_file)
pnp_file = "/proc/net/pnp";
+ if (!g_file_test(pnp_file, G_FILE_TEST_EXISTS))
+ goto out;
+
if (!g_file_get_contents(pnp_file, &pnp, NULL, &error)) {
connman_error("%s: Cannot read %s %s\n", __func__,
pnp_file, error->message);
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-05 13:35:46 +0000