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