*
******************************************************************/
-#include "caipinterface.h"
-
#include <sys/types.h>
#include <ifaddrs.h>
#include <net/if.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
+#include <sys/ioctl.h>
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <net_connection.h>
+#include "caipinterface.h"
+#include "caipnwmonitor.h"
#include "caadapterutils.h"
#include "logger.h"
#include "oic_malloc.h"
#include "oic_string.h"
+#include <coap/utlist.h>
-#define TAG "IP_MONITOR"
+#define TAG "OIC_CA_IP_MONITOR"
+#define MAX_INTERFACE_INFO_LENGTH (1024)
+#define NETLINK_MESSAGE_LENGTH (4096)
+#define IFC_LABEL_LOOP "lo"
+#define IFC_ADDR_LOOP_IPV4 "127.0.0.1"
+#define IFC_ADDR_LOOP_IPV6 "::1"
-u_arraylist_t *CAIPGetInterfaceInformation(int desiredIndex)
+/**
+ * Used to storing a connection handle for managing data connections.
+ */
+static connection_h connection = NULL;
+
+/**
+ * Used to storing adapter changes callback interface.
+ */
+static struct CAIPCBData_t *g_adapterCallbackList = NULL;
+
+/**
+ * Create new interface item.
+ */
+static CAInterface_t *CANewInterfaceItem(int index, char *name, int family,
+ const char *addr, int flags);
+
+/**
+ * Add new network interface in list.
+ */
+static CAResult_t CAAddInterfaceItem(u_arraylist_t *iflist, int index,
+ char *name, int family, const char *addr, int flags);
+
+/**
+ * Pass the changed network status through the stored callback.
+ */
+static void CAIPPassNetworkChangesToAdapter(CANetworkStatus_t status);
+
+/**
+ * Callback function to received connection state changes.
+ */
+static void CAIPConnectionStateChangedCb(connection_type_e type, void* userData);
+
+int CAGetPollingInterval(int interval)
{
- u_arraylist_t *iflist = u_arraylist_create();
- if (!iflist)
+ return interval;
+}
+
+static void CAIPPassNetworkChangesToAdapter(CANetworkStatus_t status)
+{
+ CAIPCBData_t *cbitem = NULL;
+ LL_FOREACH(g_adapterCallbackList, cbitem)
{
- OIC_LOG_V(ERROR, TAG, "Failed to create iflist: %s", strerror(errno));
- return NULL;
+ if (cbitem && cbitem->adapter)
+ {
+ cbitem->callback(cbitem->adapter, status);
+ }
+ }
+}
+
+CAResult_t CAIPSetNetworkMonitorCallback(CAIPAdapterStateChangeCallback callback,
+ CATransportAdapter_t adapter)
+{
+ if (!callback)
+ {
+ OIC_LOG(ERROR, TAG, "callback is null");
+ return CA_STATUS_INVALID_PARAM;
+ }
+
+ CAIPCBData_t *cbitem = NULL;
+ LL_FOREACH(g_adapterCallbackList, cbitem)
+ {
+ if (cbitem && adapter == cbitem->adapter && callback == cbitem->callback)
+ {
+ OIC_LOG(DEBUG, TAG, "this callback is already added");
+ return CA_STATUS_OK;
+ }
+ }
+
+ cbitem = (CAIPCBData_t *)OICCalloc(1, sizeof(*cbitem));
+ if (!cbitem)
+ {
+ OIC_LOG(ERROR, TAG, "Malloc failed");
+ return CA_STATUS_FAILED;
+ }
+
+ cbitem->adapter = adapter;
+ cbitem->callback = callback;
+ LL_APPEND(g_adapterCallbackList, cbitem);
+
+ return CA_STATUS_OK;
+}
+
+CAResult_t CAIPUnSetNetworkMonitorCallback(CATransportAdapter_t adapter)
+{
+ CAIPCBData_t *cbitem = NULL;
+ CAIPCBData_t *tmpCbitem = NULL;
+ LL_FOREACH_SAFE(g_adapterCallbackList, cbitem, tmpCbitem)
+ {
+ if (cbitem && adapter == cbitem->adapter)
+ {
+ OIC_LOG(DEBUG, TAG, "remove specific callback");
+ LL_DELETE(g_adapterCallbackList, cbitem);
+ OICFree(cbitem);
+ return CA_STATUS_OK;
+ }
+ }
+ return CA_STATUS_OK;
+}
+
+u_arraylist_t *CAFindInterfaceChange()
+{
+ u_arraylist_t *iflist = NULL;
+ char buf[NETLINK_MESSAGE_LENGTH] = { 0 };
+ struct sockaddr_nl sa = { 0 };
+ struct iovec iov = { .iov_base = buf,
+ .iov_len = sizeof (buf) };
+ struct msghdr msg = { .msg_name = (void *)&sa,
+ .msg_namelen = sizeof (sa),
+ .msg_iov = &iov,
+ .msg_iovlen = 1 };
+
+ ssize_t len = recvmsg(caglobals.ip.netlinkFd, &msg, 0);
+
+ for (struct nlmsghdr *nh = (struct nlmsghdr *)buf; NLMSG_OK(nh, len); nh = NLMSG_NEXT(nh, len))
+ {
+ if (nh != NULL && (nh->nlmsg_type != RTM_DELADDR && nh->nlmsg_type != RTM_NEWADDR))
+ {
+ continue;
+ }
+
+ struct ifinfomsg *ifi = (struct ifinfomsg *)NLMSG_DATA(nh);
+ if (!ifi)
+ {
+ continue;
+ }
+
+ if (RTM_DELADDR == nh->nlmsg_type)
+ {
+ CloseMulticastSocket();
+ }
+
+ int ifiIndex = ifi->ifi_index;
+ iflist = CAIPGetInterfaceInformation(ifiIndex);
+ if (!iflist)
+ {
+ OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
+ return NULL;
+ }
+ CreateMulticastSocket();
+ }
+ return iflist;
+}
+
+CAResult_t CAIPStartNetworkMonitor(CAIPAdapterStateChangeCallback callback,
+ CATransportAdapter_t adapter)
+{
+ if (!g_adapterCallbackList)
+ {
+ // Initialize Connections.
+ connection_error_e ret = connection_create(&connection);
+ if (CONNECTION_ERROR_NONE != ret)
+ {
+ OIC_LOG(ERROR, TAG, "connection_create failed");
+ return CA_STATUS_FAILED;
+ }
+
+ // Set callback for receiving state changes.
+ ret = connection_set_type_changed_cb(connection, CAIPConnectionStateChangedCb, NULL);
+ if (CONNECTION_ERROR_NONE != ret)
+ {
+ OIC_LOG(ERROR, TAG, "connection_set_type_changed_cb failed");
+ return CA_STATUS_FAILED;
+ }
+ }
+
+ OIC_LOG(DEBUG, TAG, "Initialize network monitoring successfully");
+ return CAIPSetNetworkMonitorCallback(callback, adapter);
+}
+
+CAResult_t CAIPStopNetworkMonitor(CATransportAdapter_t adapter)
+{
+ OIC_LOG(DEBUG, TAG, "IN");
+
+ CAIPUnSetNetworkMonitorCallback(adapter);
+ if (!g_adapterCallbackList)
+ {
+ // Reset callback for receiving state changes.
+ if (connection)
+ {
+ connection_error_e ret = connection_unset_type_changed_cb(connection);
+ if (CONNECTION_ERROR_NONE != ret)
+ {
+ OIC_LOG(ERROR, TAG, "connection_unset_type_changed_cb failed");
+ }
+
+ // Deinitialize Wifi service.
+ ret = connection_destroy(connection);
+ if (CONNECTION_ERROR_NONE != ret)
+ {
+ OIC_LOG(ERROR, TAG, "connection_destroy failed");
+ }
+ connection = NULL;
+ }
+ }
+
+ OIC_LOG(DEBUG, TAG, "Network monitoring terminated successfully");
+ return CA_STATUS_OK;
+}
+
+/**
+ * Used to send netlink query to kernel and recv response from kernel.
+ *
+ * @param[in] idx desired network interface index, 0 means all interfaces.
+ * @param[out] iflist linked list.
+ *
+ */
+static bool CAIPGetAddrInfo(int idx, u_arraylist_t *iflist)
+{
+ if ((idx < 0) || (iflist == NULL))
+ {
+ return false;
}
struct ifaddrs *ifp = NULL;
if (-1 == getifaddrs(&ifp))
{
OIC_LOG_V(ERROR, TAG, "Failed to get ifaddrs: %s", strerror(errno));
- u_arraylist_destroy(iflist);
- return NULL;
+ return false;
}
struct ifaddrs *ifa = NULL;
for (ifa = ifp; ifa; ifa = ifa->ifa_next)
{
+ if (!ifa->ifa_addr)
+ {
+ continue;
+ }
+
int family = ifa->ifa_addr->sa_family;
if ((ifa->ifa_flags & IFF_LOOPBACK) || (AF_INET != family && AF_INET6 != family))
{
}
int ifindex = if_nametoindex(ifa->ifa_name);
- int length = u_arraylist_length(iflist);
- int already = false;
- for (int i = length-1; i >= 0; i--)
- {
- CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
- if (ifitem->index == ifindex && ifitem->family == family)
- {
- already = true;
- break;
- }
- }
- if (already)
+ if (idx && (ifindex != idx))
{
continue;
}
- CAInterface_t *ifitem = (CAInterface_t *)OICCalloc(1, sizeof(CAInterface_t));
- if (!ifitem)
+ char ipaddr[MAX_ADDR_STR_SIZE_CA] = {0};
+ if (family == AF_INET6)
{
- OIC_LOG(ERROR, TAG, "Malloc failed");
- goto exit;
+ struct sockaddr_in6 *in6 = (struct sockaddr_in6*) ifa->ifa_addr;
+ inet_ntop(family, (void *)&(in6->sin6_addr), ipaddr, sizeof(ipaddr));
+ }
+ else if (family == AF_INET)
+ {
+ struct sockaddr_in *in = (struct sockaddr_in*) ifa->ifa_addr;
+ inet_ntop(family, (void *)&(in->sin_addr), ipaddr, sizeof(ipaddr));
}
- OICStrcpy(ifitem->name, INTERFACE_NAME_MAX, ifa->ifa_name);
- ifitem->index = ifindex;
- ifitem->family = family;
- ifitem->ipv4addr = ((struct sockaddr_in *)(ifa->ifa_addr))->sin_addr.s_addr;
- ifitem->flags = ifa->ifa_flags;
+ if ((strcmp(ipaddr, IFC_ADDR_LOOP_IPV4) == 0) ||
+ (strcmp(ipaddr, IFC_ADDR_LOOP_IPV6) == 0) ||
+ (strcmp(ifa->ifa_name, IFC_LABEL_LOOP) == 0))
+ {
+ OIC_LOG(DEBUG, TAG, "LOOPBACK continue!!!");
+ continue;
+ }
- CAResult_t result = u_arraylist_add(iflist, ifitem);
+ CAResult_t result = CAAddInterfaceItem(iflist, ifindex,
+ ifa->ifa_name, family,
+ ipaddr, ifa->ifa_flags);
if (CA_STATUS_OK != result)
{
- OIC_LOG(ERROR, TAG, "u_arraylist_add failed.");
+ OIC_LOG(ERROR, TAG, "CAAddInterfaceItem fail");
goto exit;
}
}
+ freeifaddrs(ifp);
+ return true;
+exit:
freeifaddrs(ifp);
+ return false;
+}
+
+u_arraylist_t *CAIPGetInterfaceInformation(int desiredIndex)
+{
+ u_arraylist_t *iflist = u_arraylist_create();
+ if (!iflist)
+ {
+ OIC_LOG_V(ERROR, TAG, "Failed to create iflist: %s", strerror(errno));
+ return NULL;
+ }
+
+ if (!CAIPGetAddrInfo(desiredIndex, iflist))
+ {
+ goto exit;
+ }
+
return iflist;
exit:
- freeifaddrs(ifp);
u_arraylist_destroy(iflist);
return NULL;
}
+
+static CAResult_t CAAddInterfaceItem(u_arraylist_t *iflist, int index,
+ char *name, int family, const char *addr, int flags)
+{
+ CAInterface_t *ifitem = CANewInterfaceItem(index, name, family, addr, flags);
+ if (!ifitem)
+ {
+ return CA_STATUS_FAILED;
+ }
+ bool result = u_arraylist_add(iflist, ifitem);
+ if (!result)
+ {
+ OIC_LOG(ERROR, TAG, "u_arraylist_add failed.");
+ OICFree(ifitem);
+ return CA_STATUS_FAILED;
+ }
+
+ return CA_STATUS_OK;
+}
+
+static CAInterface_t *CANewInterfaceItem(int index, char *name, int family,
+ const char *addr, int flags)
+{
+ CAInterface_t *ifitem = (CAInterface_t *)OICCalloc(1, sizeof (CAInterface_t));
+ if (!ifitem)
+ {
+ OIC_LOG(ERROR, TAG, "Malloc failed");
+ return NULL;
+ }
+
+ OICStrcpy(ifitem->name, INTERFACE_NAME_MAX, name);
+ ifitem->index = index;
+ ifitem->family = family;
+ OICStrcpy(ifitem->addr, sizeof(ifitem->addr), addr);
+ ifitem->flags = flags;
+
+ return ifitem;
+}
+
+void CAIPConnectionStateChangedCb(connection_type_e type, void* userData)
+{
+ (void)userData;
+
+ switch (type)
+ {
+ case CONNECTION_TYPE_DISCONNECTED:
+ OIC_LOG(DEBUG, TAG, "Connection is in CONNECTION_TYPE_DISCONNECTED");
+ CAIPPassNetworkChangesToAdapter(CA_INTERFACE_DOWN);
+ break;
+ case CONNECTION_TYPE_ETHERNET:
+ OIC_LOG(DEBUG, TAG, "Connection is in CONNECTION_TYPE_ETHERNET");
+ CAIPPassNetworkChangesToAdapter(CA_INTERFACE_UP);
+ break;
+ case CONNECTION_TYPE_WIFI:
+ OIC_LOG(DEBUG, TAG, "Connection is in CONNECTION_TYPE_WIFI");
+ CAIPPassNetworkChangesToAdapter(CA_INTERFACE_UP);
+ break;
+ case CONNECTION_TYPE_CELLULAR:
+ OIC_LOG(DEBUG, TAG, "Connection is in CONNECTION_TYPE_CELLULAR");
+ CAIPPassNetworkChangesToAdapter(CA_INTERFACE_UP);
+ break;
+ default:
+ break;
+ }
+}
projects / platform / upstream / iotivity.git / blobdiff