NetlinkEvent.cpp revision ebfe3db361c51d9d99bf6cfd495bd16bdf815e1f
1168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat/* 2168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat * Copyright (C) 2008 The Android Open Source Project 3168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat * 4168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat * Licensed under the Apache License, Version 2.0 (the "License"); 5168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat * you may not use this file except in compliance with the License. 6168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat * You may obtain a copy of the License at 7168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat * 8168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat * http://www.apache.org/licenses/LICENSE-2.0 9168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat * 10168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat * Unless required by applicable law or agreed to in writing, software 11168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat * distributed under the License is distributed on an "AS IS" BASIS, 12168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat * See the License for the specific language governing permissions and 14168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat * limitations under the License. 15168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat */ 16168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat#include <stdlib.h> 173d40729054803fae1c4d4bb5ac7554665a132b26San Mehat#include <string.h> 18168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat 19168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat#define LOG_TAG "NetlinkEvent" 20168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat#include <cutils/log.h> 21168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat 22168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat#include <sysutils/NetlinkEvent.h> 23168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat 24168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehatconst int NetlinkEvent::NlActionUnknown = 0; 25168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehatconst int NetlinkEvent::NlActionAdd = 1; 26168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehatconst int NetlinkEvent::NlActionRemove = 2; 27168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehatconst int NetlinkEvent::NlActionChange = 3; 28168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat 29168415b822cae1f8b54ef09c41c11a9b97b87f40San MehatNetlinkEvent::NetlinkEvent() { 30168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat mAction = NlActionUnknown; 31ebfe3db361c51d9d99bf6cfd495bd16bdf815e1fSan Mehat memset(mParams, 0, sizeof(mParams)); 32ebfe3db361c51d9d99bf6cfd495bd16bdf815e1fSan Mehat mPath = NULL; 33ebfe3db361c51d9d99bf6cfd495bd16bdf815e1fSan Mehat mSubsystem = NULL; 34168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat} 35168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat 36168415b822cae1f8b54ef09c41c11a9b97b87f40San MehatNetlinkEvent::~NetlinkEvent() { 37168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat int i; 38168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat if (mPath) 39168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat free(mPath); 40168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat if (mSubsystem) 41168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat free(mSubsystem); 42168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat for (i = 0; i < NL_PARAMS_MAX; i++) { 43168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat if (!mParams[i]) 44168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat break; 45168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat free(mParams[i]); 46168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat } 47168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat} 48168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat 49168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehatbool NetlinkEvent::decode(char *buffer, int size) { 50168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat char *s = buffer; 51168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat char *end; 52168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat int param_idx = 0; 53168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat int i; 54168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat int first = 1; 55168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat 56168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat end = s + size; 57168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat while (s < end) { 58168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat if (first) { 59168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat char *p; 60168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat for (p = s; *p != '@'; p++); 61168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat p++; 62168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat mPath = strdup(p); 63168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat first = 0; 64168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat } else { 65168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat if (!strncmp(s, "ACTION=", strlen("ACTION="))) { 66168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat char *a = s + strlen("ACTION="); 67168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat if (!strcmp(a, "add")) 68168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat mAction = NlActionAdd; 69168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat else if (!strcmp(a, "remove")) 70168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat mAction = NlActionRemove; 71168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat else if (!strcmp(a, "change")) 72168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat mAction = NlActionChange; 7303f0d27f6c49530a91402ed42f8ca4b2fda04b9fSan Mehat } else if (!strncmp(s, "SEQNUM=", strlen("SEQNUM="))) 74168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat mSeq = atoi(s + strlen("SEQNUM=")); 7503f0d27f6c49530a91402ed42f8ca4b2fda04b9fSan Mehat else if (!strncmp(s, "SUBSYSTEM=", strlen("SUBSYSTEM="))) 76168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat mSubsystem = strdup(s + strlen("SUBSYSTEM=")); 77168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat else 78168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat mParams[param_idx++] = strdup(s); 79168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat } 80168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat s+= strlen(s) + 1; 81168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat } 82168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat return true; 83168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat} 84168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat 85168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehatconst char *NetlinkEvent::findParam(const char *paramName) { 86168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat int i; 87168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat 88168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat for (i = 0; i < NL_PARAMS_MAX; i++) { 89168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat if (!mParams[i]) 90168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat break; 91168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat if (!strncmp(mParams[i], paramName, strlen(paramName))) 92168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat return &mParams[i][strlen(paramName) + 1]; 93168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat } 94168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat 95168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat LOGE("NetlinkEvent::FindParam(): Parameter '%s' not found", paramName); 96168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat return NULL; 97168415b822cae1f8b54ef09c41c11a9b97b87f40San Mehat} 98