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/*
* eHostInfoMgr.cpp
*
* Created on: 2013. 11. 14.
* Author: kos
*/
#include <sstream>
#include <fstream>
#include <stdio.h>
#include <signal.h>
#include <string.h>
#include <dirent.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include "eHostInfoMgr.h"
#include "ePreDefine.h"
#define KILLPROC(PID) { kill(PID, SIGINT); }
using namespace std;
//-------------------------------------------------------------------------------
#ifdef DEBUG_LOG
//#undef LOG
//#define LOG(X,...) { do{}while(0); }
#endif
//-------------------------------------------------------------------------------
eHostInfoMgr::eHostInfoMgr(std::string aName, int aInfoCount)
: mInfoCount(aInfoCount)
{
mSemId = 0;
mSemName = "/" + aName + "_sem";
mShmFd = 0;
mShmSize = sizeof(eHostInfo) * aInfoCount;
mShmName = "/" + aName + "_shm";
mShmData = 0;
}
//-------------------------------------------------------------------------------
eHostInfoMgr::~eHostInfoMgr()
{
}
//-------------------------------------------------------------------------------
bool eHostInfoMgr::IsTerminated(std::vector<int>& aList, int aPid)
{
for (int i = 0; i < aList.size(); ++i) {
if (aList[i] == aPid) {
return false;
}
}
return true;
}
//-------------------------------------------------------------------------------
bool eHostInfoMgr::Init()
{
if (Open() == false) {
return false;
}
#ifdef DEBUG_LOG
LOG("shm-info : fd [%d], name [%s], size [%d], data [%p]", mShmFd, mShmName.c_str(), mShmSize, mShmData);
LOG("sem-info : id [%p], name [%s]", mSemId, mSemName.c_str());
#endif
std::vector<int> pidlist = FindPid("transtreamproxy", 0);
#ifdef DEBUG_LOG
Dump("before init.");
#endif
Wait();
for (int i = 0; i < mInfoCount; i++) {
if (mShmData[i].pid != 0) {
int pid = mShmData[i].pid;
if(IsTerminated(pidlist, pid)) {
Erease(pid);
}
}
}
Post();
return true;
}
//-------------------------------------------------------------------------------
bool eHostInfoMgr::Register(std::string aIpAddr, int aPid)
{
bool result = false;
Wait();
for (int i = 0; i < mInfoCount; i++) {
if (mShmData[i].pid == 0) {
result = true;
mShmData[i].pid = aPid;
strcpy(mShmData[i].ip, aIpAddr.c_str());
break;
}
}
Post();
#ifdef DEBUG_LOG
Dump("after register.");
#endif
return result;
}
//-------------------------------------------------------------------------------
void eHostInfoMgr::Unregister(std::string aIpAddr)
{
Wait();
for (int i = 0; i < mInfoCount; i++) {
if (strcmp(mShmData[i].ip, aIpAddr.c_str()) == 0) {
memset(mShmData[i].ip, 0, 16);
mShmData[i].pid = 0;
break;
}
}
Post();
#ifdef DEBUG_LOG
Dump("after unregister.");
#endif
}
//-------------------------------------------------------------------------------
void eHostInfoMgr::Erease(int aPid)
{
for (int i = 0; i < mInfoCount; i++) {
if (mShmData[i].pid == aPid) {
#ifdef DEBUG_LOG
LOG("erase.. %s : %d", mShmData[i].ip, mShmData[i].pid);
#endif
memset(mShmData[i].ip, 0, 16);
mShmData[i].pid = 0;
break;
}
}
}
//-------------------------------------------------------------------------------
void eHostInfoMgr::Update(std::string aIpAddr, int aPid)
{
#ifdef DEBUG_LOG
Dump("before update.");
#endif
Wait();
for (int i = 0; i < mInfoCount; i++) {
if (strcmp(mShmData[i].ip, aIpAddr.c_str()) == 0) {
KILLPROC(mShmData[i].pid);
memset(mShmData[i].ip, 0, 16);
mShmData[i].pid = 0;
}
}
Post();
Register(aIpAddr, aPid);
}
//-------------------------------------------------------------------------------
int eHostInfoMgr::IsExist(std::string aIpAddr)
{
int existCount = 0;
Wait();
for (int i = 0; i < mInfoCount; i++) {
if (strcmp(mShmData[i].ip, aIpAddr.c_str()) == 0) {
existCount++;
}
}
Post();
return existCount;
}
//-------------------------------------------------------------------------------
#ifdef DEBUG_LOG
void eHostInfoMgr::Dump(const char* aMessage)
{
LOG(" >> %s", aMessage);
LOG("-------- [ DUMP HOST INFO ] ---------");
for (int i = 0; i < mInfoCount; i++) {
LOG("%d : ip [%s], pid [%d]", i, mShmData[i].ip, mShmData[i].pid);
}
LOG("-------------------------------------");
Post();
}
#endif
//-------------------------------------------------------------------------------
std::string eHostInfoMgr::GetHostAddr()
{
std::stringstream ss;
struct sockaddr_in addr;
socklen_t addrlen = sizeof(addr);
getpeername(0, (struct sockaddr*)&addr, &addrlen);
ss << inet_ntoa(addr.sin_addr);// << ":" << addr.sin_port;
return ss.str();
}
//-------------------------------------------------------------------------------
std::vector<int> eHostInfoMgr::FindPid(std::string aProcName, int aMyPid)
{
std::vector<int> pidlist;
char cmdlinepath[256] = {0};
DIR* d = opendir("/proc");
if (d != 0) {
struct dirent* de;
while ((de = readdir(d)) != 0) {
int pid = atoi(de->d_name);
if (pid > 0) {
sprintf(cmdlinepath, "/proc/%s/cmdline", de->d_name);
std::string cmdline;
std::ifstream cmdlinefile(cmdlinepath);
std::getline(cmdlinefile, cmdline);
if (!cmdline.empty()) {
size_t pos = cmdline.find('\0');
if (pos != string::npos)
cmdline = cmdline.substr(0, pos);
pos = cmdline.rfind('/');
if (pos != string::npos)
cmdline = cmdline.substr(pos + 1);
if ((aProcName == cmdline) && ((aMyPid != pid) || (aMyPid == 0))) {
pidlist.push_back(pid);
}
}
}
}
closedir(d);
}
return pidlist;
}
//-------------------------------------------------------------------------------
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