/
mod_nocat.cpp
1748 lines (1297 loc) · 58.2 KB
/
mod_nocat.cpp
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// ============================================================================
//
// = LIBRARY
// ulib - c++ library
//
// = FILENAME
// mod_nocat.cpp - this is a plugin nocat for userver
//
// = AUTHOR
// Stefano Casazza
//
// ============================================================================
#include <ulib/date.h>
#include <ulib/file_config.h>
#include <ulib/utility/des3.h>
#include <ulib/utility/uhttp.h>
#include <ulib/utility/base64.h>
#include <ulib/utility/escape.h>
#include <ulib/net/ipt_ACCOUNT.h>
#include <ulib/utility/services.h>
#include <ulib/net/server/server.h>
#include <ulib/utility/string_ext.h>
#include <ulib/net/server/client_image.h>
#include <ulib/net/server/plugin/mod_nocat.h>
#ifdef HAVE_STRSTREAM_H
# include <strstream.h>
#else
# include <ulib/replace/strstream.h>
#endif
#ifndef ULLONG_MAX
# define ULLONG_MAX 0xffffffffffffffffULL
#endif
#ifdef HAVE_MODULES
U_CREAT_FUNC(mod_nocat, UNoCatPlugIn)
#endif
const UString* UNoCatPlugIn::str_ROUTE_ONLY;
const UString* UNoCatPlugIn::str_DNS_ADDR;
const UString* UNoCatPlugIn::str_INCLUDE_PORTS;
const UString* UNoCatPlugIn::str_EXCLUDE_PORTS;
const UString* UNoCatPlugIn::str_ALLOWED_WEB_HOSTS;
const UString* UNoCatPlugIn::str_EXTERNAL_DEVICE;
const UString* UNoCatPlugIn::str_INTERNAL_DEVICE;
const UString* UNoCatPlugIn::str_INTERNAL_DEVICE_LABEL;
const UString* UNoCatPlugIn::str_LOCAL_NETWORK;
const UString* UNoCatPlugIn::str_AUTH_SERVICE_URL;
const UString* UNoCatPlugIn::str_LOGOUT_URL;
const UString* UNoCatPlugIn::str_LOGIN_TIMEOUT;
const UString* UNoCatPlugIn::str_DECRYPT_CMD;
const UString* UNoCatPlugIn::str_DECRYPT_KEY;
const UString* UNoCatPlugIn::str_FW_CMD;
const UString* UNoCatPlugIn::str_CHECK_BY_ARPING;
const UString* UNoCatPlugIn::str_Action;
const UString* UNoCatPlugIn::str_Permit;
const UString* UNoCatPlugIn::str_Deny;
const UString* UNoCatPlugIn::str_Mode;
const UString* UNoCatPlugIn::str_Redirect;
const UString* UNoCatPlugIn::str_renew;
const UString* UNoCatPlugIn::str_Mac;
const UString* UNoCatPlugIn::str_Timeout;
const UString* UNoCatPlugIn::str_Token;
const UString* UNoCatPlugIn::str_User;
const UString* UNoCatPlugIn::str_anonymous;
const UString* UNoCatPlugIn::str_Traffic;
const UString* UNoCatPlugIn::str_GATEWAY_PORT;
const UString* UNoCatPlugIn::str_FW_ENV;
const UString* UNoCatPlugIn::str_IPHONE_SUCCESS;
const UString* UNoCatPlugIn::str_CHECK_EXPIRE_INTERVAL;
int UNoCatPlugIn::fd_stderr;
vPF UNoCatPlugIn::unatexit;
char UNoCatPlugIn::pcStrAddress[INET6_ADDRSTRLEN];
bool UNoCatPlugIn::arping;
bool UNoCatPlugIn::flag_check_peers_for_info;
time_t UNoCatPlugIn::last_request_check;
UPing** UNoCatPlugIn::sockp;
fd_set* UNoCatPlugIn::addrmask;
uint32_t UNoCatPlugIn::nfds;
uint32_t UNoCatPlugIn::num_radio;
uint32_t UNoCatPlugIn::index_AUTH;
uint32_t UNoCatPlugIn::total_connections;
uint32_t UNoCatPlugIn::login_timeout;
UString* UNoCatPlugIn::status_content;
UIptAccount* UNoCatPlugIn::ipt;
UNoCatPlugIn* UNoCatPlugIn::pthis;
UVector<UIPAddress*>** UNoCatPlugIn::vaddr;
UHashMap<UModNoCatPeer*>* UNoCatPlugIn::peers;
#define U_NO_MORE_TIME 10
#define U_NOCAT_MAX_TIMEOUT (30 * U_ONE_DAY_IN_SECOND)
#define U_NOCAT_STATUS \
"<html>\n" \
"<head><title>Access Point: %s</title></head>\n" \
"<body bgcolor=\"#FFFFFF\" text=\"#000000\">\n" \
"<h1>Access Point: %s</h1>\n" \
"<hr noshade=\"1\"/>\n" \
"<table border=\"0\" cellpadding=\"5\" cellspacing=\"0\">\n" \
"<tr><td>Current Time</td><td>%7D</td></tr>\n" \
"<tr><td>Gateway Up Since</td><td>%#7D</td></tr>\n" \
"<tr><td>GatewayVersion</td><td>" ULIB_VERSION "</td></tr>\n" \
"<tr><td>RouteOnly</td><td>%.*s</td></tr>\n" \
"<tr><td>DNSAddr</td><td>%.*s</td></tr>\n" \
"<tr><td>IncludePorts</td><td>%.*s</td></tr>\n" \
"<tr><td>ExcludePorts</td><td>%.*s</td></tr>\n" \
"<tr><td>AllowedWebHosts</td><td>%.*s</td></tr>\n" \
"<tr><td>ExternalDevice</td><td>%.*s</td></tr>\n" \
"<tr><td>InternalDevice</td><td>%.*s</td></tr>\n" \
"<tr><td>LocalNetwork</td><td>%.*s</td></tr>\n" \
"<tr><td>GatewayPort</td><td>%u</td></tr>\n" \
"<tr><td>AuthServiceAddr</td><td>%.*s</td></tr>\n" \
"<tr><td>LoginTimeout</td><td>%u</td></tr>\n" \
"</table>\n" \
"<hr noshade=\"1\"/>\n" \
"<table border=\"0\" cellpadding=\"5\" cellspacing=\"0\">\n" \
"<tr><td>Users</td><td>%u</td></tr>\n" \
"<tr><td>Users Connected</td><td>%u</td></tr>\n" \
"<tr><td></td><td></td></tr>\n" \
"<tr><td align=\"center\"><h2>Current Users</h2></td>\n" \
"<table border=\"1\" cellpadding=\"5\">\n" \
"<tr><th>User UID</th>\n" \
"<th>IP address</th>\n" \
"<th>Connection time</th>\n" \
"<th>Elapsed connection time</th>\n" \
"<th>Left connection time</th>\n" \
"<th>Consumed traffic</th>\n" \
"<th>Left traffic</th>\n" \
"<th>MAC address</th>\n" \
"<th>Status</th></tr>\n" \
"%.*s" \
"</table></td></tr>\n" \
"</table>\n" \
"<hr noshade=\"1\"/>\n" \
"<img src=%s width=\"112\" height=\"35\">\n" \
"<p style=\"text-align:right\">Powered by ULib</p>\n" \
"</body>\n" \
"</html>"
// status
void UNoCatPlugIn::getPeerStatus(UStringRep* key, void* value)
{
U_TRACE(0, "UNoCatPlugIn::getPeerStatus(%.*S,%p)", U_STRING_TO_TRACE(*key), value)
UModNoCatPeer* peer = (UModNoCatPeer*) value;
U_INTERNAL_ASSERT(peer->mac.isNullTerminated())
char c;
const char* color;
const char* status;
uint64_t how_much_traffic;
UString buffer(U_CAPACITY);
const char* mac = peer->mac.data();
time_t how_much_connected, how_much_remain;
U_INTERNAL_DUMP("now = %#4D", u_now->tv_sec)
U_INTERNAL_DUMP("logout = %#4D", peer->logout)
U_INTERNAL_DUMP("expire = %#4D", peer->expire)
if (login_timeout &&
peer->expire <= u_now->tv_sec &&
peer->status == UModNoCatPeer::PEER_ACCEPT) deny(peer, false, false);
if (peer->status == UModNoCatPeer::PEER_ACCEPT)
{
color = "green";
status = "PERMIT";
how_much_connected = u_now->tv_sec - peer->connected;
how_much_remain = (peer->expire > u_now->tv_sec ? (peer->expire - u_now->tv_sec) : 0);
}
else
{
color = "red";
status = "DENY";
how_much_connected = peer->logout - peer->connected;
how_much_remain = peer->expire - peer->logout;
}
U_INTERNAL_DUMP("ltraffic = %llu traffic = %llu", peer->ltraffic, peer->traffic)
how_much_traffic = (peer->ltraffic > peer->traffic ? (peer->ltraffic - peer->traffic) : 0);
U_INTERNAL_DUMP("how_much_traffic = %llu", how_much_traffic)
how_much_traffic /= 1024;
if (how_much_traffic < 1024) c = 'K';
{
c = 'M';
how_much_traffic /= 1024;
}
buffer.snprintf("<tr>\n"
"<td>%.*s</td>\n"
"<td>%.*s</td>\n"
"<td>%#7D</td>\n"
"<td>%#3D</td>\n"
"<td>%#3D</td>\n"
"<td>%llu KBytes</td>\n"
"<td>%llu %cBytes</td>\n"
"<td><a href=\"http://standards.ieee.org/cgi-bin/ouisearch?%c%c%c%c%c%c\">%s</a></td>\n"
"<td style=\"color:%s\">%s</td>\n"
"</tr>\n",
U_STRING_TO_TRACE(peer->user),
U_STRING_TO_TRACE(peer->ip),
peer->connected + u_now_adjust,
how_much_connected,
how_much_remain,
peer->traffic / 1024, how_much_traffic, c,
mac[0], mac[1], mac[3], mac[4], mac[6], mac[7], mac,
color, status);
(void) status_content->append(buffer);
}
void UNoCatPlugIn::setStatusContent(UModNoCatPeer* peer)
{
U_TRACE(0, "UNoCatPlugIn::setStatusContent(%p)", peer)
status_content->setEmpty();
if (peer) getPeerStatus(peer->ip.rep, peer);
else
{
peers->callForAllEntry(getPeerStatus);
UString buffer(800U + sizeof(U_NOCAT_STATUS) + status_content->size());
U_INTERNAL_ASSERT(access_point.isNullTerminated())
const char* name = access_point.data();
buffer.snprintf(U_NOCAT_STATUS, name, name, u_start_time,
U_STRING_TO_TRACE(route_only), U_STRING_TO_TRACE(dns_addr), U_STRING_TO_TRACE(include_ports),
U_STRING_TO_TRACE(exclude_ports), U_STRING_TO_TRACE(allowed_web_hosts), U_STRING_TO_TRACE(extdev),
U_STRING_TO_TRACE(intdev), U_STRING_TO_TRACE(localnet), UServer_Base::port,
U_STRING_TO_TRACE(auth_login),
login_timeout, peers->size(), total_connections,
U_STRING_TO_TRACE(*status_content), "/images/auth_logo.png");
*status_content = buffer;
}
setHTTPResponse(*status_content);
}
// VARIE
UModNoCatPeer::UModNoCatPeer(const UString& peer_ip) : ip(peer_ip)
{
U_TRACE_REGISTER_OBJECT(0, UModNoCatPeer, "%.*S", U_STRING_TO_TRACE(peer_ip))
ip.duplicate();
ifname = USocketExt::getNetworkInterfaceName(ip);
U_INTERNAL_DUMP("ifname = %.*S", U_STRING_TO_TRACE(ifname))
ifindex = (ifname.empty() ? 0 : UNoCatPlugIn::pthis->vInternalDevice.find(ifname));
U_INTERNAL_DUMP("ifindex = %u", ifindex)
U_INTERNAL_ASSERT(ifindex <= UNoCatPlugIn::num_radio)
label = (UNoCatPlugIn::pthis->vInternalDeviceLabel.empty() ? UNoCatPlugIn::pthis->vInternalDevice[ifindex]
: UNoCatPlugIn::pthis->vInternalDeviceLabel[ifindex]);
status = UModNoCatPeer::PEER_DENY;
// set MAC address
U_INTERNAL_ASSERT(ip.isNullTerminated())
mac = UServer_Base::getMacAddress(ip.data());
// user name
user = *UNoCatPlugIn::str_anonymous;
// set connection time
ctime = connected = expire = logout = u_now->tv_sec;
// set traffic
ctraffic = traffic = 0;
ltraffic = ULLONG_MAX;
}
// define method VIRTUAL of class UEventTime
int UModNoCatPeer::handlerTime()
{
U_TRACE(0, "UModNoCatPeer::handlerTime()")
UNoCatPlugIn::deny(this, true, false);
// return value:
// ---------------
// -1 - normal
// 0 - monitoring
// ---------------
U_RETURN(-1);
}
int UNoCatPlugIn::handlerTime()
{
U_TRACE(0, "UNoCatPlugIn::handlerTime()")
// NB: check if there is now a http request processing...
if (u_http_info.method == 0) checkPeersForInfo();
else flag_check_peers_for_info = true;
// return value:
// ---------------
// -1 - normal
// 0 - monitoring
// ---------------
U_RETURN(0);
}
UNoCatPlugIn::UNoCatPlugIn() : vauth_service_url(4U), vlogout_url(4U), vinfo_url(4U),
vInternalDevice(64U), vInternalDeviceLabel(64U), vLocalNetwork(64U),
vauth_login(4U), vauth_logout(4U), vauth_ip(4U),
input(U_CAPACITY), output(U_CAPACITY), location(U_CAPACITY)
{
U_TRACE_REGISTER_OBJECT(0, UNoCatPlugIn, "")
if (str_AUTH_SERVICE_URL == 0) str_allocate();
}
UNoCatPlugIn::~UNoCatPlugIn()
{
U_TRACE_UNREGISTER_OBJECT(0, UNoCatPlugIn)
if (UEventTime::notZero() || login_timeout)
{
UTimer::stop();
UTimer::clear(true);
}
if (ipt)
{
delete ipt;
for (uint32_t i = 0; i < num_radio; ++i)
{
delete vaddr[i];
delete sockp[i];
}
U_FREE_VECTOR(sockp, num_radio, UPing);
U_FREE_VECTOR(vaddr, num_radio, UVector<UIPAddress*>);
}
if (peers)
{
peers->clear();
peers->deallocate();
delete peers;
}
if (status_content) delete status_content;
}
void UNoCatPlugIn::executeCommand(UModNoCatPeer* peer, int type)
{
U_TRACE(0, "UNoCatPlugIn::executeCommand(%p,%d)", peer, type)
peer->cmd.setArgument(3, (type == UModNoCatPeer::PEER_ACCEPT ? "permit" : "deny"));
if (peer->cmd.execute(0, 0, -1, fd_stderr))
{
int pid, status;
retry:
pid = UProcess::waitpid(-1, &status, WNOHANG); // NB: to avoid too much zombie...
if (pid > 0)
{
U_SRV_LOG("child (pid %d) exited with value %d (%s)", pid, status, UProcess::exitInfo(status));
goto retry;
}
peer->status = type;
}
UServer_Base::logCommandMsgError(peer->cmd.getCommand());
}
void UNoCatPlugIn::deny(UModNoCatPeer* peer, bool alarm, bool disconnected)
{
U_TRACE(0, "UNoCatPlugIn::deny(%p,%b,%b)", peer, alarm, disconnected)
if (peer->status == UModNoCatPeer::PEER_DENY)
{
U_SRV_LOG("Peer %.*s already deny", U_STRING_TO_TRACE(peer->ip));
}
else
{
--total_connections;
U_SRV_LOG("Removing peer %.*s", U_STRING_TO_TRACE(peer->ip));
bool bdelete;
time_t t = peer->expire - u_now->tv_sec;
uint64_t traffic = (peer->ltraffic > peer->traffic ? (peer->ltraffic - peer->traffic) : 0);
if (traffic < 1024 ||
t <= U_NO_MORE_TIME)
{
// user with no more time or no more traffic...
bdelete = true;
peer->logout = peer->expire;
(void) peers->erase(peer->ip);
}
else
{
// request of logout or user disconnected...
bdelete = false;
peer->logout = u_now->tv_sec;
}
pthis->addPeerInfo(peer, (disconnected ? -1 : peer->logout));
executeCommand(peer, UModNoCatPeer::PEER_DENY);
if (alarm == false)
{
if (login_timeout) UTimer::erase(peer, bdelete, true);
peer->UEventTime::reset();
}
}
}
void UNoCatPlugIn::permit(UModNoCatPeer* peer, time_t timeout)
{
U_TRACE(0, "UNoCatPlugIn::permit(%p,%ld)", peer, timeout)
if (peer->status == UModNoCatPeer::PEER_ACCEPT)
{
U_SRV_LOG("Peer %.*s already permit", U_STRING_TO_TRACE(peer->ip));
}
else
{
U_SRV_LOG("Accepting peer %.*s", U_STRING_TO_TRACE(peer->ip));
executeCommand(peer, UModNoCatPeer::PEER_ACCEPT);
// set connection time
peer->expire = (peer->ctime = peer->connected = peer->logout = u_now->tv_sec) + timeout;
if (timeout > U_NOCAT_MAX_TIMEOUT) timeout = U_NOCAT_MAX_TIMEOUT; // check for safe timeout...
peer->UEventTime::setSecond(timeout);
if (login_timeout) UTimer::insert(peer, true);
++total_connections;
}
}
void UNoCatPlugIn::setRedirectLocation(UModNoCatPeer* peer, const UString& redirect, const Url& auth)
{
U_TRACE(0, "UNoCatPlugIn::setRedirectLocation(%p,%.*S,%.*S)", peer, U_STRING_TO_TRACE(redirect), U_URL_TO_TRACE(auth))
UString value_encoded(U_CAPACITY);
Url::encode(peer->mac, value_encoded);
location.snprintf("%.*s?mac=%.*s&ip=", U_URL_TO_TRACE(auth), U_STRING_TO_TRACE(value_encoded));
Url::encode(peer->ip, value_encoded);
location.snprintf_add("%.*s&redirect=", U_STRING_TO_TRACE(value_encoded));
Url::encode(redirect, value_encoded);
location.snprintf_add("%.*s&gateway=", U_STRING_TO_TRACE(value_encoded));
Url::encode(gateway, value_encoded);
location.snprintf_add("%.*s&timeout=%ld&token=", U_STRING_TO_TRACE(value_encoded), login_timeout);
if (peer->token.empty())
{
// ---------------------------------------------------------------------------------------------------------------------
// set crypto token (valid for 30 minutes)...
// ---------------------------------------------------------------------------------------------------------------------
// NB: tutto il traffico viene rediretto sulla 80 (CAPTIVE PORTAL) e quindi windows update, antivrus, etc...
// questo introduce la possibilita' che durante la fase di autorizzazione il token generato per il ticket autorizzativo
// non corrisponda piu' a quello inviato dal portale per l'autorizzazione...
// ---------------------------------------------------------------------------------------------------------------------
time_t _expire = u_now->tv_sec + (30L * 60L);
peer->token = UServices::generateToken(peer->mac, _expire);
}
location.snprintf_add("%.*s&ap=%.*s@%.*s", U_STRING_TO_TRACE(value_encoded), U_STRING_TO_TRACE(peer->label), U_STRING_TO_TRACE(access_point));
}
bool UNoCatPlugIn::checkSignedData(const char* ptr, uint32_t len)
{
U_TRACE(0, "UNoCatPlugIn::checkSignedData(%.*S,%u)", len, ptr, len)
UString buffer(U_CAPACITY);
if (decrypt_key.empty() == false)
{
if (UBase64::decode(ptr, len, buffer)) UDES3::decode(buffer, output);
else output.setEmpty();
}
else
{
Url::decode(ptr, len, buffer);
input.snprintf("-----BEGIN PGP MESSAGE-----\n\n"
"%.*s"
"\n-----END PGP MESSAGE-----", U_STRING_TO_TRACE(buffer));
(void) pgp.execute(&input, &output, -1, fd_stderr);
UServer_Base::logCommandMsgError(pgp.getCommand());
}
bool result = (output.empty() == false);
U_RETURN(result);
}
bool UNoCatPlugIn::checkAuthMessage(UModNoCatPeer* peer)
{
U_TRACE(0, "UNoCatPlugIn::checkAuthMessage(%p)", peer)
U_INTERNAL_ASSERT_POINTER(peer)
time_t _expire;
Url destination;
bool result = true;
UHashMap<UString> args;
UVector<UString> name_value;
UString token, action, peer_mac(100U);
args.allocate();
istrstream is(output.data(), output.size());
is >> args;
/*
Action Permit
Mode Login
Redirect http://wi-auth:443/postlogin?uid=s.casazza&gateway=10.30.1.131&redirect=http%3A//stefano%3A5280/pippo
Mac 00:e0:4c:d4:63:f5
Timeout 3000
Token 10.30.1.105&1237907630&05608a4cbd42c9f72d2bd3a0e19ed23f
User s.casazza
*/
// check crypto token (valid for 30 minutes)...
token = args[*str_Token];
if (peer->token != token ||
UServices::getTokenData(peer_mac, token, _expire) == false ||
peer->mac != peer_mac)
{
U_INTERNAL_DUMP("expire = %ld", _expire)
U_INTERNAL_DUMP("token = %.*S", U_STRING_TO_TRACE(token))
U_INTERNAL_DUMP("peer = %.*S", U_STRING_TO_TRACE(peer->token))
U_INTERNAL_DUMP("peer_mac = %.*S", U_STRING_TO_TRACE(peer_mac))
U_SRV_LOG("Tampered token from peer %.*s: MAC %.*s", U_STRING_TO_TRACE(peer->ip), U_STRING_TO_TRACE(peer_mac));
goto error;
}
// check mac address
if (peer->mac != args[*str_Mac])
{
U_SRV_LOG("Different MAC %.*S in ticket from peer %.*s", U_STRING_TO_TRACE(peer->mac), U_STRING_TO_TRACE(peer->ip));
goto error;
}
// get action
action = args[*str_Action];
if (action == *str_Permit) permit(peer, args[*str_Timeout].strtol());
else if (action == *str_Deny) deny(peer, false, false);
else
{
U_SRV_LOG("Can't make sense of action %.*S in ticket from peer %.*s", U_STRING_TO_TRACE(action), U_STRING_TO_TRACE(peer->ip));
goto error;
}
// get redirect (destination)
destination.set(args[*str_Redirect]);
if (destination.getQuery(name_value) == 0)
{
U_SRV_LOG("Can't make sense of Redirect %.*S in ticket from peer %.*s", U_URL_TO_TRACE(destination), U_STRING_TO_TRACE(peer->ip));
goto error;
}
destination.eraseQuery();
if (destination.setQuery(name_value) == false)
{
U_SRV_LOG("Error on setting Redirect in ticket from peer %.*s", U_STRING_TO_TRACE(peer->ip));
goto error;
}
(void) location.replace(destination.get());
// set user name
peer->user = args[*str_User].copy();
// get mode
mode = args[*str_Mode].copy();
// get traffic available
peer->ltraffic = args[*str_Traffic].strtoll();
U_INTERNAL_DUMP("ltraffic = %llu", peer->ltraffic)
goto end;
error:
result = false;
end:
args.clear();
args.deallocate();
// ---------------------------------------------------------------------------------------------------------------------
// NB: tutto il traffico viene rediretto sulla 80 (CAPTIVE PORTAL) e quindi windows update, antivrus, etc...
// questo introduce la possibilita' che durante la fase di autorizzazione il token generato per il ticket autorizzativo
// non corrisponda piu' a quello inviato dal portale per l'autorizzazione...
// ---------------------------------------------------------------------------------------------------------------------
peer->token.clear();
U_RETURN(result);
}
UModNoCatPeer* UNoCatPlugIn::creatNewPeer(const UString& peer_ip)
{
U_TRACE(0, "UNoCatPlugIn::creatNewPeer(%.*S)", U_STRING_TO_TRACE(peer_ip))
UModNoCatPeer* peer = U_NEW(UModNoCatPeer(peer_ip));
*((UIPAddress*)peer) = UServer_Base::pClientImage->socket->remoteIPAddress();
if (peer->mac.empty() && peer_ip == gateway) peer->mac = UServer_Base::getMacAddress(extdev.data());
if (peer->mac.empty()) peer->mac = U_STRING_FROM_CONSTANT("00:00:00:00:00:00");
peer->rulenum = total_connections + 1; // iptables FORWARD
peer->index_AUTH = index_AUTH;
U_INTERNAL_DUMP("peer->rulenum = %u peer->index_AUTH = %u", peer->rulenum, peer->index_AUTH)
peer->setCommand(fw_cmd);
peers->insertAfterFind(peer->ip, peer);
U_RETURN_POINTER(peer, UModNoCatPeer);
}
void UNoCatPlugIn::getTraffic()
{
U_TRACE(0, "UNoCatPlugIn::getTraffic()")
#ifdef HAVE_LINUX_NETFILTER_IPV4_IPT_ACCOUNT_H
const char* ip;
const char* table;
UModNoCatPeer* peer;
struct ipt_acc_handle_ip* entry;
for (uint32_t i = 0, n = vLocalNetwork.size(); i < n; ++i)
{
U_INTERNAL_ASSERT(vLocalNetwork[i].isNullTerminated())
table = vLocalNetwork[i].data();
if (ipt->readEntries(table, false))
{
while ((entry = ipt->getNextEntry()))
{
ip = u_inet_nltoa(entry->ip);
U_INTERNAL_DUMP("IP: %s SRC packets: %u bytes: %u DST packets: %u bytes: %u",
ip, entry->src_packets, entry->src_bytes, entry->dst_packets, entry->dst_bytes)
peer = (*peers)[ip];
U_INTERNAL_DUMP("peer = %p", peer)
if (peer)
{
peer->ctraffic = entry->src_bytes + entry->dst_bytes;
peer->traffic += peer->ctraffic;
U_INTERNAL_DUMP("peer->traffic = %llu peer->ctraffic = %u", peer->traffic, peer->ctraffic)
}
}
}
}
#endif
}
void UNoCatPlugIn::addPeerInfo(UModNoCatPeer* peer, time_t logout)
{
U_TRACE(0, "UNoCatPlugIn::addPeerInfo(%p,%ld)", peer, logout)
// $1 -> mac
// $2 -> ip
// $3 -> gateway
// $4 -> ap
// $5 -> uid
// $6 -> logout
// $7 -> connected
// $8 -> traffic
U_INTERNAL_ASSERT( gateway.isNullTerminated())
U_INTERNAL_ASSERT( peer->ip.isNullTerminated())
U_INTERNAL_ASSERT( peer->mac.isNullTerminated())
U_INTERNAL_ASSERT( peer->user.isNullTerminated())
U_INTERNAL_ASSERT(access_point.isNullTerminated())
U_INTERNAL_DUMP("u_http_info.method = %p", u_http_info.method)
if (u_http_info.method || logout > 0)
{
Url* info_url = pthis->vinfo_url[peer->index_AUTH];
U_INTERNAL_DUMP("peer->index_AUTH = %u info_url = %p", peer->index_AUTH, info_url)
UString buffer(100U);
buffer.snprintf("%.*s@%.*s", U_STRING_TO_TRACE(peer->label), U_STRING_TO_TRACE(access_point));
info_url->addQuery(U_STRING_TO_PARAM(*str_Mac), U_STRING_TO_PARAM(peer->mac));
info_url->addQuery(U_CONSTANT_TO_PARAM("ip"), U_STRING_TO_PARAM(peer->ip));
info_url->addQuery(U_CONSTANT_TO_PARAM("gateway"), U_STRING_TO_PARAM(gateway));
info_url->addQuery(U_CONSTANT_TO_PARAM("ap"), U_STRING_TO_PARAM(buffer));
info_url->addQuery(U_STRING_TO_PARAM(*str_User), U_STRING_TO_PARAM(peer->user));
buffer = UStringExt::numberToString(logout); // NB: (-1|0) mean NOT logout (only info)...
info_url->addQuery(U_CONSTANT_TO_PARAM("logout"), U_STRING_TO_PARAM(buffer));
buffer = UStringExt::numberToString(u_now->tv_sec - peer->ctime);
peer->ctime = u_now->tv_sec;
info_url->addQuery(U_CONSTANT_TO_PARAM("connected"), U_STRING_TO_PARAM(buffer));
getTraffic();
buffer.snprintf("%u", peer->ctraffic);
peer->ctraffic = 0;
info_url->addQuery(U_CONSTANT_TO_PARAM("traffic"), U_STRING_TO_PARAM(buffer));
}
}
void UNoCatPlugIn::checkPeerInfo(UStringRep* key, void* value)
{
U_TRACE(0, "UNoCatPlugIn::checkPeerInfo(%.*S,%p)", U_STRING_TO_TRACE(*key), value)
UModNoCatPeer* peer = (UModNoCatPeer*) value;
if (peer->status == UModNoCatPeer::PEER_ACCEPT)
{
time_t t = peer->expire - u_now->tv_sec;
uint64_t traffic = (peer->ltraffic > peer->traffic ? (peer->ltraffic - peer->traffic) : 0);
U_SRV_LOG("Checking peer %.*s for info, remain: %ld secs %llu bytes", U_STRING_TO_TRACE(peer->ip), U_max(0,t), traffic);
if (login_timeout &&
(traffic < 1024 || t <= U_NO_MORE_TIME))
{
deny(peer, false, false);
return;
}
UString ifname = USocketExt::getNetworkInterfaceName(peer->ip);
U_INTERNAL_DUMP("ifname = %.*S peer->ifname = %.*S", U_STRING_TO_TRACE(ifname), U_STRING_TO_TRACE(peer->ifname))
if (ifname.empty())
{
U_SRV_LOG("Peer %.*s not present in ARP cache, I assume he is disconnected...", U_STRING_TO_TRACE(peer->ip));
deny(peer, false, true);
return;
}
uint32_t ifindex = pthis->vInternalDevice.find(ifname);
U_INTERNAL_DUMP("ifindex = %u peer->ifindex = %u", ifindex, peer->ifindex)
U_INTERNAL_ASSERT(ifindex <= num_radio)
if (ifindex != U_NOT_FOUND)
{
++nfds;
vaddr[ifindex]->push(peer);
}
}
}
__pure UModNoCatPeer* UNoCatPlugIn::getPeer(uint32_t n)
{
U_TRACE(0, "UNoCatPlugIn::getPeer(%u)", n)
U_INTERNAL_ASSERT_MAJOR(nfds,0)
int32_t index = -1;
UModNoCatPeer* peer;
for (uint32_t k, i = 0; i < num_radio; ++i)
{
k = vaddr[i]->size();
for (uint32_t j = 0; j < k; ++j)
{
if (++index == (int32_t)n)
{
peer = (UModNoCatPeer*) vaddr[i]->at(j);
U_RETURN_POINTER(peer, UModNoCatPeer);
}
}
}
U_RETURN_POINTER(0, UModNoCatPeer);
}
void UNoCatPlugIn::checkPeersForInfo()
{
U_TRACE(0, "UNoCatPlugIn::checkPeersForInfo()")
uint32_t i;
UModNoCatPeer* peer;
time_t last_request = u_now->tv_sec - last_request_check;
U_INTERNAL_DUMP("last_request = %ld", last_request)
// NB: check for pending arping...
if (isPingAsyncPending())
{
U_SRV_LOG("Pending arping in process (%u), waiting for completion...", nfds);
addrmask = UPing::checkForPingAsyncCompletion(nfds);
if (addrmask || last_request < 15) goto result; // NB: check for something wrong (must complete within 15 secs)...
}
if (last_request >= 15) // NB: protection from DoS...
{
last_request_check = u_now->tv_sec;
U_SRV_LOG("Checking peers for info");
for (nfds = i = 0; i < num_radio; ++i) vaddr[i]->clear();
peers->callForAllEntry(checkPeerInfo);
# ifdef HAVE_NETPACKET_PACKET_H
addrmask = (nfds ? (arping ? UPing::arping(sockp, vaddr, num_radio, true, unatexit, vInternalDevice) // parallel ARPING (async)...
: UPing::arpcache( vaddr, num_radio)) // ARP cache...
: 0);
# else
addrmask = (nfds ? (UPing::arpcache(vaddr, num_radio)) : 0);
# endif
}
result:
if (addrmask)
{
U_INTERNAL_ASSERT_MAJOR(nfds,0)
for (i = 0; i < nfds; ++i)
{
peer = getPeer(i);
U_INTERNAL_DUMP("peer = %p", peer)
if (peer)
{
if (FD_ISSET(i, addrmask)) addPeerInfo(peer, 0);
else
{
U_SRV_LOG("Peer %.*s don't return ARP reply, I assume he is disconnected...", U_STRING_TO_TRACE(peer->ip));
deny(peer, false, true);
}
}
}
nfds = 0;
addrmask = 0;
}
flag_check_peers_for_info = false;
}
void UNoCatPlugIn::notifyAuthOfUsersInfo()
{
U_TRACE(0, "UNoCatPlugIn::notifyAuthOfUsersInfo()")
Url* info_url = pthis->vinfo_url[index_AUTH];
U_INTERNAL_DUMP("index_AUTH = %u info_url = %p", index_AUTH, info_url)
// NB: if there are some data to transmit we need redirect...
if (info_url->isQuery())
{
UHTTP::setHTTPRedirectResponse(false, UString::getStringNull(), U_URL_TO_PARAM(*info_url));
*info_url = *(pthis->vlogout_url[index_AUTH]);
}
else
{
U_http_is_connection_close = U_YES;
u_http_info.nResponseCode = (isPingAsyncPending() ? HTTP_NO_CONTENT : HTTP_NOT_MODIFIED);
UHTTP::setHTTPResponse(0, 0);
}
}
UModNoCatPeer* UNoCatPlugIn::getPeerFromMAC(const UString& mac)
{
U_TRACE(0, "UNoCatPlugIn::getPeerFromMAC(%.*S)", U_STRING_TO_TRACE(mac))
UModNoCatPeer* peer;
if (peers->first())
{
do {
peer = peers->elem();
if (mac == peer->mac) U_RETURN_POINTER(peer, UModNoCatPeer);
}
while (peers->next());
}
U_RETURN_POINTER(0, UModNoCatPeer);
}
const char* UNoCatPlugIn::getIPAddress(const char* ptr, uint32_t len)
{
U_TRACE(0, "UNoCatPlugIn::getIPAddress(%.*S,%u)", len, ptr, len)
char c;
uint32_t i;
for (i = 0; i < len; ++i)
{
c = ptr[i];
if (u_isdigit(c) == 0 && c != '.' && c != ':') break;
pcStrAddress[i] = c;
}
pcStrAddress[i] = '\0';