1 files changed, 93 insertions, 0 deletions
diff --git a/libsysutils/src/NetlinkEvent.cpp b/libsysutils/src/NetlinkEvent.cpp
new file mode 100644
index 0000000..69cd3e7
--- /dev/null
+++ b/libsysutils/src/NetlinkEvent.cpp
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <stdlib.h>
+
+#define LOG_TAG "NetlinkEvent"
+#include <cutils/log.h>
+
+#include <sysutils/NetlinkEvent.h>
+
+const int NetlinkEvent::NlActionUnknown = 0;
+const int NetlinkEvent::NlActionAdd = 1;
+const int NetlinkEvent::NlActionRemove = 2;
+const int NetlinkEvent::NlActionChange = 3;
+
+NetlinkEvent::NetlinkEvent() {
+    mAction = NlActionUnknown;
+}
+
+NetlinkEvent::~NetlinkEvent() {
+    int i;
+    if (mPath)
+        free(mPath);
+    if (mSubsystem)
+        free(mSubsystem);
+    for (i = 0; i < NL_PARAMS_MAX; i++) {
+        if (!mParams[i])
+            break;
+        free(mParams[i]);
+    }
+}
+
+bool NetlinkEvent::decode(char *buffer, int size) {
+    char *s = buffer;
+    char *end;
+    int param_idx = 0;
+    int i;
+    int first = 1;
+
+    end = s + size;
+    while (s < end) {
+        if (first) {
+            char *p;
+            for (p = s; *p != '@'; p++);
+            p++;
+            mPath = strdup(p);
+            first = 0;
+        } else {
+            if (!strncmp(s, "ACTION=", strlen("ACTION="))) {
+                char *a = s + strlen("ACTION=");
+                if (!strcmp(a, "add"))
+                    mAction = NlActionAdd;
+                else if (!strcmp(a, "remove"))
+                    mAction = NlActionRemove;
+                else if (!strcmp(a, "change"))
+                    mAction = NlActionChange;
+            } else if (!strncmp(s, "SEQNUM=", strlen("SEQNUM="))) 
+                mSeq = atoi(s + strlen("SEQNUM="));
+            else if (!strncmp(s, "SUBSYSTEM=", strlen("SUBSYSTEM="))) 
+                mSubsystem = strdup(s + strlen("SUBSYSTEM="));
+            else
+                mParams[param_idx++] = strdup(s);
+        }
+        s+= strlen(s) + 1;
+    }
+    return true;
+}
+
+const char *NetlinkEvent::findParam(const char *paramName) {
+    int i;
+
+    for (i = 0; i < NL_PARAMS_MAX; i++) {
+        if (!mParams[i])
+            break;
+        if (!strncmp(mParams[i], paramName, strlen(paramName)))
+            return &mParams[i][strlen(paramName) + 1];
+    }
+
+    LOGE("NetlinkEvent::FindParam(): Parameter '%s' not found", paramName);
+    return NULL;
+}