examples: add ncdinterfacemonitor_test

examples/CMakeLists.txt

@@ -36,6 +36,9 @@ if (BUILD_NCD)
 
     add_executable(ncd_value_parser_test ncd_value_parser_test.c)
     target_link_libraries(ncd_value_parser_test ncdvalue)
+
+    add_executable(ncdinterfacemonitor_test ncdinterfacemonitor_test.c)
+    target_link_libraries(ncdinterfacemonitor_test ncdinterfacemonitor)
 endif ()
 
 if (BUILDING_UDEVMONITOR)

examples/ncdinterfacemonitor_test.c

@@ -0,0 +1,151 @@
+/**
+ * @file ncdinterfacemonitor_test.c
+ * @author Ambroz Bizjak <ambrop7@gmail.com>
+ * 
+ * @section LICENSE
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the author nor the
+ *    names of its contributors may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string.h>
+
+#include <misc/get_iface_info.h>
+#include <misc/ipaddr6.h>
+#include <misc/debug.h>
+#include <base/BLog.h>
+#include <system/BTime.h>
+#include <system/BReactor.h>
+#include <system/BSignal.h>
+#include <ncd/NCDInterfaceMonitor.h>
+
+BReactor reactor;
+NCDInterfaceMonitor monitor;
+
+static void signal_handler (void *user);
+static void monitor_handler (void *unused, struct NCDInterfaceMonitor_event event);
+static void monitor_handler_error (void *unused);
+
+int main (int argc, char **argv)
+{
+    int ret = 1;
+    
+    if (argc != 2) {
+        fprintf(stderr, "Usage: %s <interface>\n", (argc > 0 ? argv[0] : ""));
+        goto fail0;
+    }
+    
+    int ifindex;
+    if (!get_iface_info(argv[1], NULL, NULL, &ifindex)) {
+        DEBUG("get_iface_info failed");
+        goto fail0;
+    }
+    
+    BTime_Init();
+    
+    BLog_InitStdout();
+    
+    if (!BNetwork_GlobalInit()) {
+        DEBUG("BNetwork_GlobalInit failed");
+        goto fail1;
+    }
+    
+    if (!BReactor_Init(&reactor)) {
+        DEBUG("BReactor_Init failed");
+        goto fail1;
+    }
+    
+    if (!BSignal_Init(&reactor, signal_handler, NULL)) {
+        DEBUG("BSignal_Init failed");
+        goto fail2;
+    }
+    
+    int watch_flags = NCDIFMONITOR_WATCH_LINK;
+    
+    if (!NCDInterfaceMonitor_Init(&monitor, ifindex, watch_flags, &reactor, NULL, monitor_handler, monitor_handler_error)) {
+        DEBUG("NCDInterfaceMonitor_Init failed");
+        goto fail3;
+    }
+    
+    ret = BReactor_Exec(&reactor);
+    
+    NCDInterfaceMonitor_Free(&monitor);
+fail3:
+    BSignal_Finish();
+fail2:
+    BReactor_Free(&reactor);
+fail1:
+    BLog_Free();
+fail0:
+    DebugObjectGlobal_Finish();
+    
+    return ret;
+}
+
+void signal_handler (void *user)
+{
+    DEBUG("termination requested");
+    
+    BReactor_Quit(&reactor, 1);
+}
+
+void monitor_handler (void *unused, struct NCDInterfaceMonitor_event event)
+{
+    switch (event.event) {
+        case NCDIFMONITOR_EVENT_LINK_UP:
+        case NCDIFMONITOR_EVENT_LINK_DOWN: {
+            const char *type = (event.event == NCDIFMONITOR_EVENT_LINK_UP) ? "up" : "down";
+            printf("link %s\n", type);
+        } break;
+        
+        case NCDIFMONITOR_EVENT_IPV4_ADDR_ADDED:
+        case NCDIFMONITOR_EVENT_IPV4_ADDR_REMOVED: {
+            const char *type = (event.event == NCDIFMONITOR_EVENT_IPV4_ADDR_ADDED) ? "added" : "removed";
+            uint8_t *addr = (uint8_t *)&event.u.ipv4_addr.addr;
+            printf("ipv4 addr %s %d.%d.%d.%d/%d\n", type, (int)addr[0], (int)addr[1], (int)addr[2], (int)addr[3], event.u.ipv4_addr.addr.prefix);
+        } break;
+        
+        case NCDIFMONITOR_EVENT_IPV6_ADDR_ADDED:
+        case NCDIFMONITOR_EVENT_IPV6_ADDR_REMOVED: {
+            const char *type = (event.event == NCDIFMONITOR_EVENT_IPV6_ADDR_ADDED) ? "added" : "removed";
+            
+            char str[IPADDR6_PRINT_MAX];
+            if (!ipaddr6_print_addr(event.u.ipv6_addr.addr.addr, str)) {
+                DEBUG("ipaddr6_print_addr failed");
+                return;
+            }
+            
+            int dynamic = !!(event.u.ipv6_addr.addr_flags & NCDIFMONITOR_ADDR_FLAG_DYNAMIC);
+            
+            printf("ipv6 addr %s %s/%d scope=%d dynamic=%d\n", type, str, event.u.ipv6_addr.addr.prefix, event.u.ipv6_addr.addr.scope, dynamic);
+        } break;
+        
+        default: ASSERT(0);
+    }
+}
+
+void monitor_handler_error (void *unused)
+{
+    DEBUG("monitor error");
+    
+    BReactor_Quit(&reactor, 1);
+}