Bonjours,

J'utilise un programme qui s appel ims bench.
C'est un injecteur de traffic. Il me permet d'envoyer des message keep_alive de type CRLF et je voudrai les mètre au format STUN.
Pour etre plus clair dans wireshark j'obtien le message suivant :
DATA : 0A0D0A0D //qui correspond a /r/n/r/n
[length : 4]

et moi je souhaiterai avoir en STUN
Message Type : 0X0001 (Binding Request)
Message Leng :
Message Cookie : 2112A442
Message Transsaction ID : 454E000025DECD0B3B320000

Pouvez-vous m'aider pour transforme de message?
Merci,

voila le code que j'ai. Ce qu'il me semble le plus important est entre les ///////////////


Code : Sélectionner tout - Visualiser dans une fenêtre à part
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/*
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Author :  David Verbeiren from Intel Corporation - July 2007
 *            Xavier Simonart from Intel Corporation - July 2007
 *            Philippe Lecluse from Intel Corporation - July 2007
 *            Patrice Buriez from Intel Corporation - December 2008
 */
 
#include "sipp.hpp"
#include "user.hpp"
#include "csocket.hpp"
#include "sudp.hpp"
 
#ifdef HAVE_GSL
#include <gsl/gsl_rng.h>
#endif
 
static user_list S_user_pool[MAX_USER_POOL];
 
 
CUser::CUser(const char* a_Fields, int a_PoolId) :
  m_PoolId(-1), m_PoolIndex(0),
  m_pSocket(NULL), m_DoKeepAlive(0), m_LastKeepAliveTime(0)
{
  // Read user constant fields
  std::string line(a_Fields);
  int fieldNo = 0;
  int start = 0;
  do {
    int pos = line.find(';', start);
    string* val = new string(line.substr(start, pos-start));
    if (val->length()) {
      //DBGINFO_USR(("User %lx field %d = %s", this, fieldNo, val->c_str()));
      m_FieldVect.push_back(val);
    }
    start = pos;
    if (pos != string::npos)
      start++;
    fieldNo++;
  }
  while (start != string::npos);
 
  // Initialize user variables
  for(int var=0; var<SCEN_VARIABLE_SIZE; var++)
    m_VariableTable[var] = NULL;
  initVariables();
 
  // Move into initial pool
  moveToPool(a_PoolId);
}
 
 
CUser::~CUser()
{
  if (m_pSocket) {
    delete m_pSocket;
  }
  for(int var=0; var<SCEN_VARIABLE_SIZE; var++) {
    if (m_VariableTable[var])
      delete m_VariableTable[var];
  }
  if (m_FieldVect.size()) {
    m_FieldVect.clear();
  }
}
 
 
void delete_users()
{
  bool bShouldFirstDisassociateSocket = (transport != T_UDP);
  for (int p=0; p<MAX_USER_POOL; p++) {
    user_list& rPool = S_user_pool[p];
    for (user_list::iterator it = rPool.begin(); it != rPool.end(); ++it) {
      if (bShouldFirstDisassociateSocket) {
        (*it)->disassociateSocket();
      }
      delete *it;
    }
    rPool.clear();
  }
}
 
 
void CUser::initVariables()
{
  // Initialize necessary User Variable based on loaded scenarios
 
  for(int var=0; var<SCEN_VARIABLE_SIZE; var++) {
    bool isUsed = false;
    for (int scen=0; scen < SCEN_MAX_SCENARIO; scen++) {
      if (allscenarios[scen].usedUserVariable[var] > 0) {
        //DBGINFO_USR(("Scenario '%s' uses  User Variable %d", allscenarios[scen].scenario_name, var));
        isUsed = true;
        break;
      }
    }
    if (isUsed) {
      if (m_VariableTable[var] == NULL) {
        DBGINFO_USR(("Allocating user variable %d", var));
        m_VariableTable[var] = new CCallVariable();
        if (m_VariableTable[var] == NULL) {
          ERROR ("User variable allocation failed");
        }
      }
    }
    else if (m_VariableTable[var]) {
      DBGINFO_USR(("Deleting user variable %d", var));
      delete m_VariableTable[var];
      m_VariableTable[var] = NULL;
    }
  }
}
 
 
bool CUser::getField(const char* fieldName, char*& dest)
{
  int fieldNo = atoi(fieldName+5 /*strlen("field")*/);
 
  if ( (fieldNo > m_FieldVect.size()) || (m_FieldVect[fieldNo] == NULL) ) {
    WARNING_P2("User Field %d not found for user %lx", fieldNo, this);
    return false;
  }
 
  int len = m_FieldVect[fieldNo]->length();
  strncpy(dest, m_FieldVect[fieldNo]->c_str(), len);
  dest += len;
 
  return true;
}
 
 
bool CUser::getVariableValue(int varId, char*& dest)
{
  DBGINFO_USR(("CUser::getVariableValue(%d)", varId));
  if (varId < SCEN_VARIABLE_SIZE) {
    if (m_VariableTable[varId] != NULL) {
      if(m_VariableTable[varId]->isSet()) {
        dest += sprintf(dest, "%s",
                        m_VariableTable[varId]->getMatchingValue());
        DBGINFO_USR(("USER VARIABLE %d --%s--", varId, m_VariableTable[varId]->getMatchingValue()));
        return true;
      }
    }
  }
  return false;
}
 
 
bool CUser::moveToPool(int a_PoolId)
{
  DBGINFO_USR(("Moving user [0x%lx] from %d:%d to pool %d", this, m_PoolId, m_PoolIndex, a_PoolId));
 
  if (m_PoolId != a_PoolId) {
    user_list* pPool = &S_user_pool[a_PoolId];  // Note poolId has been verified at scenario parse time
 
    // Remove from current pool
    if (m_PoolId != -1) {  // Just move the last user from the pool into our current index
      user_list* pCurPool = &S_user_pool[m_PoolId];
      CUser* pLast = pCurPool->back();
      DBGINFO_USR2((" moving last user [0x%lx] from %d:%d to %d:%d", pLast, m_PoolId,
                    pLast->m_PoolIndex, m_PoolId, m_PoolIndex));
      pCurPool->at(m_PoolIndex) = pLast;
      pLast->m_PoolIndex = m_PoolIndex;
      pCurPool->pop_back();
    }
    // Put in new pool
    pPool->push_back(this);
    m_PoolIndex = pPool->size() - 1;
    m_PoolId = a_PoolId;
    DBGINFO_USR2((" user [0x%lx] now at %d:%d", this, m_PoolId, m_PoolIndex));
  }
 
  return true;
}
 
 
void CUser::associateSocket(CSocket* a_pSocket)
{
  if (a_pSocket) {
    m_pSocket = a_pSocket;
  }
}
 
 
void CUser::dumpInfo()
{
#define MAX_USER_DUMP_SIZE 2000 // Should be big enough, but detect corruption below
  char t_Buffer[MAX_USER_DUMP_SIZE+1];
  char *ptr = t_Buffer;
  ptr += sprintf(ptr, "-USR- %d ", m_PoolId);
  for (int i=0; i< m_FieldVect.size(); i++) {
    ptr += sprintf(ptr, "{%d:%s}", i, m_FieldVect[i]->c_str());
  }
  if (m_pSocket) {
    ptr += sprintf(ptr, " [%s]", GetSockaddrStorageString(m_pSocket->GetMainIp()));
  }
  if (ptr-t_Buffer>MAX_USER_DUMP_SIZE) {
    ERROR("CUser::DumpInfo() corruption detected");
  }
  DBGINFO_USR((t_Buffer));
}
 
int CUser::getPort(bool bClient)
{
  if (m_pSocket) {
    return m_pSocket->GetPort(bClient);
  }
  return 0;
}
 
char *CUser::getFullIp()
{
  if (m_pSocket) {
    return GetSockaddrStorageString(m_pSocket->GetMainIp());
  }
  return NULL;
}
 
bool CUser::FindUser(char *a_User)
{
  int fieldNo = 0;
  if ( (fieldNo > m_FieldVect.size()) || (m_FieldVect[fieldNo] == NULL) ) {
    WARNING_P1("User Field %d not found", fieldNo);
    return false;
  }
  DBGINFO_USR2(("pool %d: %s", a_PoolId, m_FieldVect[fieldNo]->c_str()));
  if (strcmp(m_FieldVect[fieldNo]->c_str(), a_User) == 0) {
    return true;
  }
  return false;
}
 
#ifdef HAVE_GSL
static gsl_rng *s_UserRng = NULL;
#endif
 
void init_user_rng()
{
#ifdef HAVE_GSL
  if (s_UserRng)
    return;
 
  init_gsl_rng();
 
  s_UserRng = gsl_rng_alloc(gsl_rng_default);
  if (!s_UserRng) {
    ERROR("Could not initialize GSL random number generator.\n");
  }
#endif
}
 
 
void seed_user_rand(unsigned long a_Seed)
{
  init_user_rng();
#ifdef HAVE_GSL
  DBGINFO_USR(("s_UserRng(0x%lx) seed=%ld", s_UserRng, a_Seed));
  gsl_rng_set(s_UserRng, a_Seed);
#endif
}
 
CUser* pick_user(int a_PoolId, UInt8 *a_User)
{
  user_list* pPool = NULL;
  user_list::iterator it;
  char *ptr = NULL;
 
  if (a_PoolId < MAX_USER_POOL)
    pPool = &S_user_pool[a_PoolId];
  if (pPool == NULL) {
    ERROR_P1("pick_user() - Invalid pool id: %d", a_PoolId);
    return NULL;
  }
 
  CUser* pUser = NULL;
  int sz = pPool->size();
  if (sz > 0) {
    for (it = pPool->begin(); it != pPool->end(); ++ it) {
      int fieldNo = 0;
      if ((*it)->FindUser((char *)a_User) == true) {
        pUser = *it;
        DBGINFO_USR2(("pick_user() from pool 0x%lx", a_PoolId, pUser));
      }
    }
  } else {
    WARNING_P1("User pool id[%d] is empty -> Quitting!", a_PoolId);
    int i, t_Res, t_Temp = 0;
    int t_Array[MAX_USER_POOL];
    t_Res = get_user_pool_info(t_Array, MAX_USER_POOL);
    printf("Users: ");
    for (i=0; i<t_Res; i++) {
      WARNING_P2("P%d:%d ",i,t_Array[i]);
      t_Temp += t_Array[i];
    }
    WARNING_P1("T=%d\n", t_Temp);
    quitting += 1;
  }
  return pUser;
}
 
CUser* pick_user(int a_PoolId)
{
  user_list* pPool = NULL;
  if (a_PoolId < MAX_USER_POOL)
    pPool = &S_user_pool[a_PoolId];
  if (pPool == NULL) {
    ERROR_P1("pick_user() - Invalid pool id: %d", a_PoolId);
    return NULL;
  }
 
  CUser* pUser = NULL;
  int sz = pPool->size();
  if (sz > 0) {
    int rnd = gsl_rng_uniform_int(s_UserRng, sz);
    pUser = pPool->at(rnd);
    DBGINFO_USR2(("pick_user() from pool %d (%d on sz=%d): 0x%lx", a_PoolId, rnd, sz, pUser));
 
    if (sz == 0) {
      WARNING_P1("User pool id[%d] is empty -> Quitting!", a_PoolId);
      // Add info about in which pools are the users
      int t_Res, i, t_Temp = 0;
      int t_Array[MAX_USER_POOL];
      t_Res = get_user_pool_info(t_Array, MAX_USER_POOL);
      printf("Users: ");
      for (i=0; i<t_Res; i++) {
        WARNING_P2("P%d:%d ",i,t_Array[i]);
        t_Temp += t_Array[i];
      }
      WARNING_P1("T=%d\n", t_Temp)
      quitting += 1;
    }
  }
#if 0
// Don't want this anymore... (create users on demand)
  if (pUser == NULL) {
    // FOR NOW, we just create users on demand whenever the pool is empty
    static unsigned int counter = 0;
    char data[] = "subs000000;field0Val;field1Val;field2Val";
    sprintf(data+4, "%06lu", counter++);
    data[10] = ';';
    pUser = new CUser(data, poolId);
  }
#endif
  return pUser;
}
 
 
void add_user(char *a_String)
{
  // Extract first field => initial pool id
  int poolId = atoi(a_String);
  int port = 0;
  std::string line(a_String);
  int fieldNo = 0;
  int pos = line.find("PORT=", 0);
  if (pos != string::npos) {
    port = atoi(a_String+pos+5);
  }
 
  const char empty[] = "";
  const char* ptr = strchr(a_String, ';');
  if (ptr == NULL)
    ptr = empty;
  CUser* pUser = new CUser(ptr, poolId);
  if (pUser == NULL)
    ERROR("Failed to create new user");
#if 1
  bool found = false;
  CSocket* t_pSocket = NULL;
  if (transport == T_UDP) {
    t_pSocket = new CSipUdpSocket(g_AsyncPoll, local_ip_is_ipv6);
    if (!t_pSocket) {
      ERROR_NO("Failed to allocate CSipUdpSocket");
    }
    t_pSocket->SetMainIp(&sock_start_udp);
    if (port == 0) {
      for (int j=0;j<2000;j++) {
        if (!t_pSocket->Bind(start_udp_port)) {
          found = true;
          break;
        }
        start_udp_port++;
        if (start_udp_port > 52000) // Temp limit
          ERROR_NO("UDP port over 52000 !");
      }
    } else {
      WARNING_P1("Using port %d", port);
      if (port > 52000) {// Temp limit
        ERROR_NO("UDP port over 52000 !");
      } else if (!t_pSocket->Bind(port))  {
        found = true;
        WARNING_P1("port %d bound", port);
      }
    }
  } else {
    // All users share the dual server/client TCP connection to the SUT
    t_pSocket = g_SutSocket;
    found = true;
  }
  if (found) {
    pUser->associateSocket(t_pSocket);
    pUser->dumpInfo();
  }
  else {
    ERROR_P1("Unable to associate UDP port arround %d", start_udp_port);
  }
#endif
}
 
 
void load_users(const char* fname)
{
  ifstream *inFile    = new ifstream(fname);
 
  if (!inFile->good()) {
    ERROR_P1("Unable to open file %s", fname);
    return ;
  }
 
  char line[MAX_CHAR_BUFFER_SIZE];
  while (!inFile->eof()) {
    line[0] = '\0';
    inFile->getline(line, MAX_CHAR_BUFFER_SIZE);
    if (*line && line[0] != '#') {
        add_user(line);
    }
  }
  delete inFile;
}
 
 
int get_user_pool_info(int *a_Array, int a_Size)
{
  int i;
  for (i=0; i<a_Size && i<MAX_USER_POOL; i++) {
    *a_Array++ = S_user_pool[i].size();
  }
  return i;
}
 
unsigned int get_total_users()
{
  unsigned int i;
  unsigned int t_Number = 0;
  for (i=0; i<MAX_USER_POOL; i++) {
    t_Number += S_user_pool[i].size();
  }
  return t_Number;
}
 
 
void init_user_variables()
{
  for (int p=0; p<MAX_USER_POOL; p++) {
    user_list& rPool = S_user_pool[p];
    for (user_list::iterator it = rPool.begin(); it != rPool.end(); ++ it) {
      (*it)->initVariables();
    }
  }
}
 
 
///////////////////////////////////////////////////////////////////////////////
void try_users_keep_alive(unsigned long curTime, unsigned short period, 
    SockAddrStorage *addrDATA)
{
  unsigned long trigTime = curTime - period;
  const char *msgDATA = "\r\n\r\n";
  int msgLen = strlen(msgDATA);
  bool unused = 0;
  socklen_t addrLen = SOCK_ADDR_SIZE(addrDATA);
 
  for (int p=0; p<MAX_USER_POOL; p++) {
    user_list& rPool = S_user_pool[p];
    for (user_list::iterator it = rPool.begin(); it != rPool.end(); ++ it) {
      CUser *u = *it;
      CSocket *tsock;
      if (u->getKeepAlive() && u->getLastKeepAliveTime() < trigTime
         && (tsock=u->getSocket())!=NULL ) {
        u->setLastKeepAliveTime(curTime);
        tsock->SendTo( (unsigned char*)msgDATA, msgLen, addrDATA, addrLen, unused);
      }
    }
  }
}
///////////////////////////////////////////////////////////////////////////
#ifdef MULTI_IP_SUPPORT
void load_users_ip(const char* fname, const char *ip_file)
{
  const char empty[] = "";
  char t_IpStrings[INET6_ADDRSTRLEN];
  char line[MAX_CHAR_BUFFER_SIZE];
  int t_Port;
  SockAddrStorage t_AddrInfo;
  ifstream *ipFile    = new ifstream(ip_file);
  if (!ipFile->good()) {
    ERROR_P1("Unable to open file %s (IP)", fname);
    return ;
  }
  while (!ipFile->eof()) {
    line[0] = '\0';
    ipFile->getline(line, MAX_CHAR_BUFFER_SIZE);
    if (*line && line[0] != '#') {
      char *t_Ptr;
      int t_ItItem = -1;
      unsigned int t_InrementTo = 0;
      int t_Current = 0;
      unsigned int t_Values[5];
      DBGINFO(("Processing: %s", line));
      AddIpScheme(line);
    }
  }
  delete ipFile;
  ifstream *inFile    = new ifstream(fname);
  if (!inFile->good()) {
    ERROR_P1("Unable to open file %s (users)", fname);
    return ;
  }
  int local_udp_port;
  while (!inFile->eof()) {
    line[0] = '\0';
    inFile->getline(line, MAX_CHAR_BUFFER_SIZE);
    if (*line && line[0] != '#') {
      int poolId = atoi(line);
      char* ptr = strchr(line, ';');
      if (!ptr)
        ptr = (char*)empty;
      if (!BuildIpSockAddrFromIpScheme(&t_AddrInfo)) {
        CUser* pUser = new CUser(ptr, poolId);
        if (pUser == NULL)
          ERROR("Failed to create new user");
        CSipUdpSocket *t_SingleUdp = new CSipUdpSocket(g_AsyncPoll, local_ip_is_ipv6);
        if (!t_SingleUdp) {
          ERROR_NO("Failed to allocate CSipUdpSocket");
        }
        local_udp_port = start_udp_port+GetIpSchemeLoopCount();
        bool found = false;
        t_SingleUdp->SetMainIp(&t_AddrInfo);
        for (int j=0;j<2000;j++) {
          if (!t_SingleUdp->Bind(local_udp_port)) {
            found = true;
            break;
          }
          local_udp_port++;
          if (local_udp_port > 52000) // Temp limit
            ERROR_NO("UDP port over 52000 !");
        } 
        if (found) {
          pUser->associateSocket(t_SingleUdp);
          pUser->dumpInfo();
        }
        else {
          ERROR_P2("Unable to associate UDP port arround %s port %d", GetSockaddrStorageString(&t_AddrInfo), local_udp_port);
        }
      } else {
        ERROR_NO("BuildIpSockAddrFromIpScheme failed !");
      }
    }
  }
  ClearIpScheme();
  delete inFile;
}
#endif