int main()
{
char ip_address[16];
printf("Enter the IP address u want to validate\n");
gets(ip_address);
//printf("Here\n");
if(isValidIP(ip_address)){
printf("valid ipv4 address!\n");
}
else{
printf("invalid ipv4 address!\n");
}
return 0;
}
void restoreIpAddressesDFS(vector<string>& results, string oneSolution, string s, int byte) {
if (byte == 4) {
if (s.empty()) {
results.push_back(oneSolution);
}
return;
}
for (int i = 1; i <= 3; i++) {
if (i <= s.length() && isValidIP(s.substr(0, i))) {
string old_oneSolution = oneSolution;
oneSolution = oneSolution.empty() ? s.substr(0, i) : oneSolution + "." + s.substr(0, i);
restoreIpAddressesDFS(results, oneSolution, s.substr(i), byte + 1);
oneSolution = old_oneSolution;
}
}
}
//------------------------------------------------------------------------------------------------
void Window::addHost()
{
bool changed = false;
QString ip = gwEdit->text();
if (isValidIP(ip))
{
gwList->addItem(ip);
gwEdit->clear();
changed = true;
}
canSwitch = ((gwList->count() > 1) && ((switchMode != mNoGateway) && (switchMode != mOnlyGateway)));
gwList->clearSelection();
selGw.clear();
if (changed)
gatewayListChanged();
}
void rec(string s, int start, int end, vector<string> &res, string curr, int dots) {
if(dots>4) return;
if((dots==4 ) && (start==(s.size())))
res.push_back(curr);
int min_end = min(end, start+3);
for(int i=start;i<=min_end;i++) {
auto new_curr = curr;
if(isValidIP(s, start, i)){
new_curr+=(s.substr(start, i-start+1));
if(dots<3) new_curr+=".";
rec(s, i+1, end, res, new_curr,dots+1);
}
if(s[start]=='0') break;
}
}
char * nslookup(char *hostname)
{
int sz = 128;
char func_msg[sz];
static char ipaddr[16];
if (!globals.use_resolver)
{
return hostname;
}
if (isValidIP(hostname))
{
return hostname;
}
struct addrinfo hints, *res;
struct in_addr addr;
int err;
memset(&hints, 0, sizeof (hints));
hints.ai_socktype = SOCK_STREAM;
hints.ai_family = AF_INET;
if ((err = getaddrinfo(hostname, NULL, &hints, &res)) != 0)
{
memset(func_msg, '\0', sz);
snprintf(func_msg, sz, "GETADDRINFO error for host: %s: %d %s", hostname, err, strerror(errno));
pthread_mutex_lock(&t_error);
writeToCustomLog(func_msg);
pthread_mutex_unlock(&t_error);
return NULL;
}
addr.s_addr = ((struct sockaddr_in *) (res->ai_addr))->sin_addr.s_addr;
if (res)freeaddrinfo(res);
snprintf(ipaddr, sizeof (ipaddr), "%s", inet_ntoa(addr));
return ipaddr;
}
/**
*
* @param argc
* @param argv
* @return
*/
int main(int argc, char** argv) {
if (0 != getuid()) {
printf("%s", INSUFF_PRIV);
exit(EXIT_FAILURE);
}
start_time = time(NULL);
char *host = NULL;
int opt = 0;
int longIndex = 0;
memset(globals.routes, 0, ROUTES_MAX_COUNT);
//
curl_global_init(CURL_GLOBAL_ALL);
//
watchdog_stop_flag = false;
sheduler_stop_flag = false;
pbuffer_stop_flag = false;
rotate_stop_flag = false;
listen_stop_flag = false;
/* Initialize arguments before we get to work. */
char * argument = NULL;
argument = "/var/run/arewik.pid";
arguments.pidfile = xmalloc(sizeof (char) * strlen(argument) + 1);
strcpy(arguments.pidfile, argument);
argument = "/var/log/arewik";
arguments.logdir = xmalloc(sizeof (char) * strlen(argument) + 1);
strcpy(arguments.logdir, argument);
argument = "/var/arewik";
arguments.storagedir = xmalloc(sizeof (char) * strlen(argument) + 1);
strcpy(arguments.storagedir, argument);
argument = "/var/arewik/buffers";
arguments.bufferdir = xmalloc(sizeof (char) * strlen(argument) + 1);
strcpy(arguments.bufferdir, argument);
argument = "/etc/arewik/arewik.conf";
arguments.configfile = xmalloc(sizeof (char) * strlen(argument) + 1);
strcpy(arguments.configfile, argument);
argument = "arewik";
arguments.user = xmalloc(sizeof (char) * strlen(argument) + 1);
strcpy(arguments.user, argument);
argument = "arewik";
arguments.group = xmalloc(sizeof (char) * strlen(argument) + 1);
strcpy(arguments.group, argument);
argument = "/tmp";
arguments.wdir = xmalloc(sizeof (char) * strlen(argument) + 1);
strcpy(arguments.wdir, argument);
argument = DEFAULT_LISTEN_IP;
arguments.listen_host = xmalloc(sizeof (char) * strlen(argument) + 1);
strcpy(arguments.listen_host, argument);
arguments.listen_port = DEFAULT_LISTEN_PORT;
arguments.verbosity = 0;
arguments.foreground = 0;
arguments.debuginfo = 0;
argument = "custom.log";
globals.custom_logfile_name = xmalloc(sizeof (char) * strlen(argument) + 1);
strcpy(globals.custom_logfile_name, argument);
argument = "debug.log";
globals.debug_logfile_name = xmalloc(sizeof (char) * strlen(argument) + 1);
strcpy(globals.debug_logfile_name, argument);
argument = "connections.log";
globals.connections_logfile_name = xmalloc(sizeof (char) * strlen(argument) + 1);
strcpy(globals.connections_logfile_name, argument);
argument = "access.log";
globals.access_logfile_name = xmalloc(sizeof (char) * strlen(argument) + 1);
strcpy(globals.access_logfile_name, argument);
globals.maxcon = 4096; // routes max * 64
globals.proxymode = false; //todo
globals.routes_cnt = 1;
globals.watchdog_interval = WATCHDOG_T;
globals.ping_interval = 30;
globals.autoreconfigure = false;
globals.reconfigure_interval = 60;
globals.use_resolver = 0;
globals.use_syslog = 0;
globals.socktimeout = 10000;
globals.epolltimeout = EPOLL_RUN_TIMEOUT;
globals.workers = POSSIBLE_FHNDL;
sprintf(globals.identline, "%s", ident);
//
globals.modules[0].id = 0;
globals.modules[0].enabled = true;
globals.modules[0].name = "plain";
globals.modules[0].process_function = &process_plain;
globals.modules[0].init_function = NULL;
globals.modules[1].id = 1;
globals.modules[1].enabled = false;
globals.modules[1].name = "riak";
globals.modules[1].process_function = &process_riak;
globals.modules[1].init_function = &init_riak_module;
globals.modules[1].close_function = &close_riak;
globals.modules[2].id = 2;
globals.modules[2].enabled = false;
globals.modules[2].name = "esearch";
globals.modules[2].process_function = &process_esearch;
globals.modules[2].init_function = &init_esearch_module;
globals.modules[2].close_function = &close_esearch;
globals.modules[3].id = 3;
globals.modules[3].enabled = false;
globals.modules[3].name = "webhdfs";
globals.modules[3].process_function = &process_webhdfs;
globals.modules[3].init_function = &init_webhdfs_module;
globals.modules[3].close_function = &close_webhdfs;
CPRESS_FUNCT[0].type = SNAPPY;
CPRESS_FUNCT[0].compress_function = &compress_snappy;
CPRESS_FUNCT[1].type = GZIP;
CPRESS_FUNCT[1].compress_function = &compress_gzip;
set_sig_handler();
static const char *optString = "s:D:B:u:g:p:l:c:H:P:vfhd?";
opt = getopt_long(argc, argv, optString, longOpts, &longIndex);
while (opt != -1) {
switch (opt) {
case 'p':
if (!is_valid_opt(optarg)) {
print_usage();
}
arguments.pidfile = xrealloc(arguments.pidfile, (sizeof (char) * strlen(optarg) + 1));
strcpy(arguments.pidfile, optarg);
break;
case 'l':
if (!is_valid_opt(optarg)) {
print_usage();
}
arguments.logdir = xrealloc(arguments.pidfile, (sizeof (char) * strlen(optarg) + 1));
strcpy(arguments.logdir, optarg);
break;
case 'c':
if (!is_valid_opt(optarg)) {
print_usage();
}
arguments.configfile = xrealloc(arguments.configfile, (sizeof (char) * strlen(optarg) + 1));
strcpy(arguments.configfile, optarg);
break;
case 'H':
if (!isValidIP(optarg)) {
print_usage();
}
if (NULL != (host = nslookup(optarg))) {
arguments.listen_host = xrealloc(arguments.listen_host, (sizeof (char) * strlen(optarg) + 1));
strcpy(arguments.listen_host, host);
} else {
printf("%s\n", hstrerror(h_errno));
exit(EXIT_FAILURE);
}
break;
case 'u':
if (!is_valid_opt(optarg)) {
print_usage();
}
arguments.user = xrealloc(arguments.user, (sizeof (char) * strlen(optarg) + 1));
strcpy(arguments.user, optarg);
break;
case 'g':
arguments.group = xrealloc(arguments.group, (sizeof (char) * strlen(optarg) + 1));
strcpy(arguments.group, optarg);
break;
case 'D':
if (!is_valid_opt(optarg)) {
print_usage();
}
arguments.wdir = xrealloc(arguments.wdir, (sizeof (char) * strlen(optarg) + 1));
strcpy(arguments.wdir, optarg);
break;
case 's':
if (!is_valid_opt(optarg)) {
print_usage();
}
arguments.storagedir = xrealloc(arguments.storagedir, (sizeof (char) * strlen(optarg) + 1));
strcpy(arguments.storagedir, optarg);
break;
case 'B':
if (!is_valid_opt(optarg)) {
print_usage();
}
arguments.bufferdir = xrealloc(arguments.bufferdir, (sizeof (char) * strlen(optarg) + 1));
strcpy(arguments.bufferdir, optarg);
break;
case 'P':
arguments.listen_port = atoi(optarg);
break;
case 'v':
arguments.verbosity++;
break;
case 'f':
arguments.foreground++;
break;
case 'h':
print_usage();
break;
case 'd':
arguments.debuginfo++;
arguments.verbosity++;
break;
default:
if (!is_valid_opt(optarg)) {
print_usage();
}
break;
}
opt = getopt_long(argc, argv, optString, longOpts, &longIndex);
}
if (false == DirectoryExists(arguments.storagedir)) {
printf("Specified storage directory '%s' does not exists\n", arguments.storagedir);
printf("Creating new one\n");
if (0 > mkdir(arguments.storagedir, 0755)) {
printf("Can not create storage directory - %s\n", strerror(errno));
exit(EXIT_FAILURE);
} else {
setRightOwner(arguments.storagedir);
}
}
setRightOwner(arguments.storagedir);
if (false == DirectoryExists(arguments.bufferdir)) {
printf("Specified buffer directory '%s' does not exists\n", arguments.bufferdir);
printf("Creating new one\n");
if (0 > mkdir(arguments.bufferdir, 0755)) {
printf("Can not create buffer directory - %s\n", strerror(errno));
exit(EXIT_FAILURE);
} else {
setRightOwner(arguments.bufferdir);
}
}
setRightOwner(arguments.bufferdir);
if (true == DirectoryExists(arguments.pidfile)) {
printf("Specified pid file '%s' is a directory\n", arguments.pidfile);
exit(EXIT_FAILURE);
}
if (false == DirectoryExists(arguments.wdir)) {
printf("Specified working directory '%s' does not exists or not a directory\n", arguments.wdir);
exit(EXIT_FAILURE);
}
if (arguments.foreground == 1) {
printf("Running in foreground mode...\n");
setbuf(stdout, 0);
setbuf(stdin, 0);
setbuf(stderr, 0);
}
if (arguments.verbosity == 1) {
printf("Verbosity enabled\n");
}
if (false == FileExists(arguments.configfile)) {
printf("Specified file '%s' does not exists\n", arguments.configfile);
exit(EXIT_FAILURE);
} else if (true == DirectoryExists(arguments.configfile)) {
printf("Specified file '%s' is a directory\n", arguments.configfile);
exit(EXIT_FAILURE);
} else {
setRightOwner(arguments.configfile);
if (true != hasRightOwner(arguments.configfile)) {
printf("The file '%s' has invalid owner/group\nMust be %s:%s\n", arguments.configfile, arguments.user, arguments.group);
exit(EXIT_FAILURE);
}
}
if (false == DirectoryExists(arguments.logdir)) {
printf("Specified log directory '%s' does not exists\n", arguments.logdir);
printf("Creating new one\n");
if (0 > mkdir(arguments.logdir, 0755)) {
printf("Can not create log directory - %s\n", strerror(errno));
exit(EXIT_FAILURE);
} else {
setRightOwner(arguments.logdir);
}
}
setRightOwner(arguments.logdir);
if (true != hasRightOwner(arguments.logdir)) {
printf("The file '%s' has invalid owner/group\nMust be %s:%s\n", arguments.logdir, arguments.user, arguments.group);
exit(EXIT_FAILURE);
}
glob = readConfig(arguments.configfile);
checkPid();
openCustomLog();
openDebugLog();
openConLog();
openAccessLog();
if (!(pwd = getpwnam(arguments.user))) {
snprintf(TMP_MSG, MAXLINE, "No such user: %s. Quitting!", arguments.user);
writeToCustomLog(TMP_MSG);
exit(EXIT_FAILURE);
} else my_uid = pwd->pw_uid;
if (!(grp = getgrnam(arguments.group))) {
snprintf(TMP_MSG, MAXLINE, "No such group: %s. Quitting!", arguments.group);
writeToCustomLog(TMP_MSG);
exit(EXIT_FAILURE);
} else my_gid = grp->gr_gid;
if (arguments.foreground == 0) {
pid = fork();
if (pid < 0) {
snprintf(TMP_MSG, MAXLINE, "%s", "Can not fork! [Invalid PID]");
writeToCustomLog(TMP_MSG);
removePid();
exit(EXIT_FAILURE);
}
/* If we got a good PID, then
we can exit the parent process. */
if (pid > 0) {
exit(EXIT_SUCCESS);
}
//
snprintf(TMP_MSG, MAXLINE, "%s", "Forked successfully");
writeToCustomLog(TMP_MSG);
/* Change the file mode mask */
umask(027);
/* Create a new SID for the child process */
sid = setsid();
if (sid < 0) {
snprintf(TMP_MSG, MAXLINE, "%s", "Can not create child process");
writeToCustomLog(TMP_MSG);
/* Log the failure */
removePid();
exit(EXIT_FAILURE);
}
snprintf(TMP_MSG, MAXLINE, "%s", "Daemonizing");
writeToCustomLog(TMP_MSG);
/* Change the current working directory */
if ((chdir(arguments.wdir)) < 0) {
snprintf(TMP_MSG, MAXLINE, "%s", "Can not change current directory");
writeToCustomLog(TMP_MSG);
/* Log the failure */
exit(EXIT_FAILURE);
}
snprintf(TMP_MSG, MAXLINE, "%s", "Working directory changed");
writeToCustomLog(TMP_MSG);
}
savePid();
if ((setgid(my_gid)) < 0) {
snprintf(TMP_MSG, MAXLINE, "ERROR: setgid(%d) failed: %s", my_gid, strerror(errno));
writeToCustomLog(TMP_MSG);
halt();
}
snprintf(TMP_MSG, MAXLINE, "Group ID changed to %d", my_gid);
writeToCustomLog(TMP_MSG);
if ((setuid(my_uid)) < 0) {
snprintf(TMP_MSG, MAXLINE, "ERROR: setuid(%d) failed: %s", my_uid, strerror(errno));
writeToCustomLog(TMP_MSG);
halt();
}
snprintf(TMP_MSG, MAXLINE, "User ID changed to %d", my_gid);
writeToCustomLog(TMP_MSG);
if (arguments.foreground == 0) {
snprintf(TMP_MSG, MAXLINE, "%s", "Closing descriptors & disabling verbosity.\nEnsure you have set right permissions for your log file.\nWatch your log file for further information\n");
VERBOSE(TMP_MSG);
arguments.verbosity = 0;
/* Close out the standard file descriptors */
close(STDIN_FILENO);
close(STDOUT_FILENO);
close(STDERR_FILENO);
}
////////////////////////////////////////////////////////////////////////////////
//
init_arrays();
init_webhdfs_arrays();
init_active_c_table();
init_descriptors();
scan_connections();
//
////////////////////////////////////////////////////////////////////////////////
spawn_threads();
do_listen();
////////////////////////////////////////////////////////////////////////////////
/* This never happens */
return 0;
}
//------------------------------------------------------------------------------------------------
void Window::gwTextChanged(const QString & text)
{
addGw->setEnabled(isValidIP(text));
}
//------------------------------------------------------------------------------------------------
void Window::readSettings()
{
setInetStatus(imSwitching);
QSettings settings(iniFileName(), QSettings::IniFormat);
int val;
QString key;
key = "Options/";
val = settings.value(key + "ConnectionTimeout", QVariant(8)).toInt();
if (val < connTimeout->minimum())
val = connTimeout->minimum();
if (val > connTimeout->maximum())
val = connTimeout->maximum();
connTimeout->setValue(val);
val = settings.value(key + "PriorityTimeout", QVariant(10)).toInt();
if (val < prioTimeout->minimum())
val = prioTimeout->minimum();
if (val > prioTimeout->maximum())
val = prioTimeout->maximum();
prioTimeout->setValue(val);
val = settings.value(key + "PingTimeout", QVariant(800)).toInt();
if (val < pingTimeout->minimum())
val = pingTimeout->minimum();
if (val > pingTimeout->maximum())
val = pingTimeout->maximum();
pingTimeout->setValue(val);
bool bval;
bval = settings.value(key + "RunOnStartup", QVariant(false)).toBool();
runOnStartup->setChecked(bval);
bval = settings.value(key + "ShowBalloons", QVariant(true)).toBool();
showBalloons->setChecked(bval);
bval = settings.value(key + "AskOnQuit", QVariant(true)).toBool();
askOnQuit->setChecked(bval);
bval = settings.value(key + "WriteGatewayOnExit", QVariant(true)).toBool();
writeGwOnExit->setChecked(bval);
indexGateway = -1;
canSwitch = (gwList->count() > 1);
pingHost = settings.value(key + "PingHost", QVariant("8.8.8.8")).toString();
if (pingHost.isEmpty() || !isValidIP(pingHost))
pingHost = GOOGLE_DNS;
pingHostEdit->setText(pingHost);
key = "Gateways/";
QStringList defaultGateways;
defaultGateways << "172.16.10.1" << "172.16.10.5";
// avoid redundant calling slot
disconnect(switchType, SIGNAL(currentIndexChanged(int)),
this, SLOT(switchTypeChanged(int)));
// remove gateways from combobox
int c = switchType->count();
for (int i = 4; i < c; i++)
switchType->removeItem(4);
switchType->setCurrentIndex(-1);
// connect again
connect(switchType, SIGNAL(currentIndexChanged(int)),
this, SLOT(switchTypeChanged(int)));
QStringList gateways = settings.value(key + "GatewayList", QVariant(defaultGateways)).toStringList();
gwList->addItems(gateways);
switchType->addItems(gateways);
gwListChanged = false;
key = "MainWindow/";
resize((const QSize &)settings.value(key + "Size", QVariant(QSize(550, 300))));
key = "Options/";
val = settings.value(key + "SwitchType", QVariant(0)).toInt();
if (val < 0)
val = 0;
if (val >= switchType->count())
val = 0;
switchType->setCurrentIndex(val);
}
//------------------------------------------------------------------------------------------------
void Window::pingHostEdited(const QString & ipAddress)
{
if (isValidIP(ipAddress))
pingHost = ipAddress;
settingsChanged();
}