Implemented backend for rlm_stg.

[stg.git] / projects / rlm_stg / stg_client.cpp

diff --git a/projects/rlm_stg/stg_client.cpp b/projects/rlm_stg/stg_client.cpp
index 75d443adfee748a58a4279b78f885308807af6cb..6987976b7d44bf011ec4bb8d406fd538601dcb26 100644 (file)
--- a/projects/rlm_stg/stg_client.cpp
+++ b/projects/rlm_stg/stg_client.cpp
@@ -18,279 +18,156 @@
  *    Author : Maxim Mamontov <faust@stargazer.dp.ua>
  */
 
  *    Author : Maxim Mamontov <faust@stargazer.dp.ua>
  */
 

-/*
- *  Realization of data access via Stargazer for RADIUS
- *
- *  $Revision: 1.8 $
- *  $Date: 2010/04/16 12:30:02 $
- *
- */
+#include "stg_client.h"

 
 

-#include <netdb.h>
-#include <sys/types.h>
-#include <unistd.h> // close
+#include "stg/common.h"

 
 

-#include <cerrno>
-#include <cstring>
+#include <boost/bind.hpp>

 
 #include <stdexcept>
 
 
 #include <stdexcept>
 

-#include "stg_client.h"
-
-using namespace std;
-
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-STG_CLIENT::STG_CLIENT(const std::string & host, uint16_t port, uint16_t lp, const std::string & pass)
-    : localPort(lp),
-      password(pass),
-      framedIP(0)
-{
-sock = socket(AF_INET, SOCK_DGRAM, 0);
-if (sock == -1)
-    {
-    std::string message = strerror(errno);
-    message = "Socket create error: '" + message + "'";
-    throw std::runtime_error(message);
-    }
-
-struct hostent * he = NULL;
-he = gethostbyname(host.c_str());
-if (he == NULL)
-    {
-    throw std::runtime_error("gethostbyname error");
-    }
+namespace {

 
 

-outerAddr.sin_family = AF_INET;
-outerAddr.sin_port = htons(port);
-outerAddr.sin_addr.s_addr = *(uint32_t *)he->h_addr;
+STG_CLIENT* stgClient = NULL;

 
 

-InitEncrypt();
-}
-//-----------------------------------------------------------------------------
-STG_CLIENT::~STG_CLIENT()
+unsigned fromType(STG_CLIENT::TYPE type)

 {
 {

-close(sock);
+    return static_cast<unsigned>(type);

 }
 }

-//-----------------------------------------------------------------------------
-uint32_t STG_CLIENT::GetFramedIP() const
+
+STG::SGCP::TransportType toTransport(const std::string& value)

 {
 {

-return framedIP;
+    std::string type = ToLower(value);
+    if (type == "unix") return STG::SGCP::UNIX;
+    else if (type == "udp") return STG::SGCP::UDP;
+    else if (type == "tcp") return STG::SGCP::TCP;
+    throw ChannelConfig::Error("Invalid transport type. Should be 'unix', 'udp' or 'tcp'.");

 }
 }

-//-----------------------------------------------------------------------------
-inline
-void STG_CLIENT::InitEncrypt()
-{
-unsigned char keyL[RAD_PASSWORD_LEN];
-memset(keyL, 0, RAD_PASSWORD_LEN);
-strncpy((char *)keyL, password.c_str(), RAD_PASSWORD_LEN);
-Blowfish_Init(&ctx, keyL, RAD_PASSWORD_LEN);
+

 }
 }

-//-----------------------------------------------------------------------------
-int STG_CLIENT::PrepareNet()
+
+ChannelConfig::ChannelConfig(std::string addr)
+    : transport(STG::SGCP::TCP)

 {
 {

-if (localPort != 0)
-    {
-    struct sockaddr_in localAddr;
-    localAddr.sin_family = AF_INET;
-    localAddr.sin_port = htons(localPort);
-    localAddr.sin_addr.s_addr = inet_addr("0.0.0.0");;
+    // unix:pass@/var/run/stg.sock
+    // tcp:secret@192.168.0.1:12345
+    // udp:key@isp.com.ua:54321

 
 

-    if (bind(sock, (struct sockaddr *)&localAddr, sizeof(localAddr)))
-        {
-        errorStr = "Bind failed";
-        return -1;
-        }
+    size_t pos = addr.find_first_of(':');
+    if (pos == std::string::npos)
+        throw Error("Missing transport name.");
+    transport = toTransport(addr.substr(0, pos));
+    addr = addr.substr(pos + 1);
+    if (addr.empty())
+        throw Error("Missing address to connect to.");
+    pos = addr.find_first_of('@');
+    if (pos != std::string::npos) {
+        key = addr.substr(0, pos);
+        addr = addr.substr(pos + 1);
+        if (addr.empty())
+            throw Error("Missing address to connect to.");

     }
     }

-return 0;
+    if (transport == STG::SGCP::UNIX)
+    {
+        address = addr;
+        return;
+    }
+    pos = addr.find_first_of(':');
+    if (pos == std::string::npos)
+        throw Error("Missing port.");
+    address = addr.substr(0, pos);
+    if (str2x(addr.substr(pos + 1), port))
+        throw Error("Invalid port value.");

 }
 }

-//-----------------------------------------------------------------------------
-int STG_CLIENT::Start()
+
+STG_CLIENT::STG_CLIENT(const std::string& address)
+    : m_config(address),
+      m_proto(m_config.transport, m_config.key),
+      m_thread(boost::bind(&STG_CLIENT::m_run, this))

 {
 {

-return PrepareNet();

 }
 }

-//-----------------------------------------------------------------------------
-int STG_CLIENT::Stop()
+
+STG_CLIENT::~STG_CLIENT()

 {
 {

-return 0;
+    stop();

 }
 }

-//-----------------------------------------------------------------------------
-string STG_CLIENT::GetUserPassword() const
+
+bool STG_CLIENT::stop()

 {
 {

-return userPassword;
+    return m_proto.stop();

 }
 }

-//-----------------------------------------------------------------------------
-int STG_CLIENT::Send(const RAD_PACKET & packet)
-{
-char buf[RAD_MAX_PACKET_LEN];
-    
-Encrypt(buf, (char *)&packet, sizeof(RAD_PACKET) / 8);
-
-int res = sendto(sock, buf, sizeof(RAD_PACKET), 0, (struct sockaddr *)&outerAddr, sizeof(outerAddr));

 
 

-if (res == -1)
-    errorStr = "Error sending data";
-
-return res;
-}
-//-----------------------------------------------------------------------------
-int STG_CLIENT::RecvData(RAD_PACKET * packet)
+RESULT STG_CLIENT::request(TYPE type, const std::string& userName, const std::string& password, const PAIRS& pairs)

 {
 {

-char buf[RAD_MAX_PACKET_LEN];
-int res;
-
-struct sockaddr_in addr;
-socklen_t len = sizeof(struct sockaddr_in);
-
-res = recvfrom(sock, buf, RAD_MAX_PACKET_LEN, 0, reinterpret_cast<struct sockaddr *>(&addr), &len);
-if (res == -1)
-    {
-    errorStr = "Error receiving data";
-    return -1;
-    }
-
-Decrypt((char *)packet, buf, res / 8);
-
-return 0;
+    m_writeHeader(type, userName, password);
+    m_writePairBlock(pairs);
+    RESULT result;
+    result.modify = m_readPairBlock();
+    result.reply = m_readPairBlock();
+    return result;

 }
 }

-//-----------------------------------------------------------------------------
-int STG_CLIENT::Request(RAD_PACKET * packet, const std::string & login, const std::string & svc, uint8_t packetType)
-{
-int res;
-
-memcpy((void *)&packet->magic, (void *)RAD_ID, RAD_MAGIC_LEN);
-packet->protoVer[0] = '0';
-packet->protoVer[1] = '1';
-packet->packetType = packetType;
-packet->ip = 0;
-strncpy((char *)packet->login, login.c_str(), RAD_LOGIN_LEN);
-strncpy((char *)packet->service, svc.c_str(), RAD_SERVICE_LEN);

 
 

-res = Send(*packet);
-if (res == -1)
-    return -1;
-
-res = RecvData(packet);
-if (res == -1)
-    return -1;
+STG_CLIENT* STG_CLIENT::get()
+{
+    return stgClient;
+}

 
 

-if (strncmp((char *)packet->magic, RAD_ID, RAD_MAGIC_LEN))
-    {
-    errorStr = "Magic invalid. Wanted: '";
-    errorStr += RAD_ID;
-    errorStr += "', got: '";
-    errorStr += (char *)packet->magic;
-    errorStr += "'";
-    return -1;
+bool STG_CLIENT::configure(const std::string& address)
+{
+    if ( stgClient != NULL && stgClient->stop() )
+        delete stgClient;
+    try {
+        stgClient = new STG_CLIENT(address);
+        return true;
+    } catch (const ChannelConfig::Error& ex) {
+        // TODO: Log it

     }
     }

-
-return 0;
+    return false;

 }
 }

-//-----------------------------------------------------------------------------
-int STG_CLIENT::Authorize(const string & login, const string & svc)
-{
-RAD_PACKET packet;
-
-userPassword = "";
-
-if (Request(&packet, login, svc, RAD_AUTZ_PACKET))
-    return -1;
-
-if (packet.packetType != RAD_ACCEPT_PACKET)
-    return -1;

 
 

-userPassword = (char *)packet.password;
-
-return 0;
-}
-//-----------------------------------------------------------------------------
-int STG_CLIENT::Authenticate(const string & login, const string & svc)
+void STG_CLIENT::m_writeHeader(TYPE type, const std::string& userName, const std::string& password)

 {
 {

-RAD_PACKET packet;
-
-userPassword = "";
-
-if (Request(&packet, login, svc, RAD_AUTH_PACKET))
-    return -1;
-
-if (packet.packetType != RAD_ACCEPT_PACKET)
-    return -1;
-
-return 0;
+    try {
+        m_proto.writeAll<uint64_t>(fromType(type));
+        m_proto.writeAll(userName);
+        m_proto.writeAll(password);
+    } catch (const STG::SGCP::Proto::Error& ex) {
+        throw Error(ex.what());
+    }

 }
 }

-//-----------------------------------------------------------------------------
-int STG_CLIENT::PostAuthenticate(const string & login, const string & svc)
-{
-RAD_PACKET packet;
-
-userPassword = "";
-
-if (Request(&packet, login, svc, RAD_POST_AUTH_PACKET))
-    return -1;

 
 

-if (packet.packetType != RAD_ACCEPT_PACKET)
-    return -1;
-
-if (svc == "Framed-User")
-    framedIP = packet.ip;
-else
-    framedIP = 0;
-
-return 0;
-}
-//-----------------------------------------------------------------------------
-int STG_CLIENT::Account(const std::string & type, const string & login, const string & svc, const string & sessid)
+void STG_CLIENT::m_writePairBlock(const PAIRS& pairs)

 {
 {

-RAD_PACKET packet;
-
-userPassword = "";
-strncpy((char *)packet.sessid, sessid.c_str(), RAD_SESSID_LEN);
-
-if (type == "Start")
-    {
-    if (Request(&packet, login, svc, RAD_ACCT_START_PACKET))
-        return -1;
-    }
-else if (type == "Stop")
-    {
-    if (Request(&packet, login, svc, RAD_ACCT_STOP_PACKET))
-        return -1;
-    }
-else if (type == "Interim-Update")
-    {
-    if (Request(&packet, login, svc, RAD_ACCT_UPDATE_PACKET))
-        return -1;
-    }
-else
-    {
-    if (Request(&packet, login, svc, RAD_ACCT_OTHER_PACKET))
-        return -1;
+    try {
+        m_proto.writeAll<uint64_t>(pairs.size());
+        for (size_t i = 0; i < pairs.size(); ++i) {
+            m_proto.writeAll(pairs[i].first);
+            m_proto.writeAll(pairs[i].second);
+        }
+    } catch (const STG::SGCP::Proto::Error& ex) {
+        throw Error(ex.what());

     }
     }

-
-if (packet.packetType != RAD_ACCEPT_PACKET)
-    return -1;
-
-return 0;

 }
 }

-//-----------------------------------------------------------------------------
-void STG_CLIENT::Encrypt(char * dst, const char * src, int len8)         
+
+PAIRS STG_CLIENT::m_readPairBlock()

 {
 {

-// len8 - длина в 8-ми байтовых блоках                                                   
-if (dst != src) 
-    memcpy(dst, src, len8 * 8);                                                          
-    
-for (int i = 0; i < len8; i++)
-    Blowfish_Encrypt(&ctx, (uint32_t *)(dst + i*8), (uint32_t *)(dst + i*8 + 4));
+    try {
+        size_t count = m_proto.readAll<uint64_t>();
+        if (count == 0)
+            return PAIRS();
+        PAIRS res(count);
+        for (size_t i = 0; i < count; ++i) {
+            res[i].first = m_proto.readAll<std::string>();
+            res[i].second = m_proto.readAll<std::string>();
+        }
+        return res;
+    } catch (const STG::SGCP::Proto::Error& ex) {
+        throw Error(ex.what());
+    }

 }
 }

-//-----------------------------------------------------------------------------
-void STG_CLIENT::Decrypt(char * dst, const char * src, int len8)
-{
-// len8 - длина в 8-ми байтовых блоках
-if (dst != src)
-    memcpy(dst, src, len8 * 8);

 
 

-for (int i = 0; i < len8; i++)
-    Blowfish_Decrypt(&ctx, (uint32_t *)(dst + i*8), (uint32_t *)(dst + i*8 + 4));
+void STG_CLIENT::m_run()
+{
+    m_proto.connect(m_config.address, m_config.port);
+    m_proto.run();

 }
 }

-//-----------------------------------------------------------------------------