Program: 52293
Project: 52293
Buggy source:
public int authenticate(Context context,String netid,String password,String realm,HttpServletRequest request) throws SQLException {
  log.info(LogManager.getHeader(context,"String_Node_Str","String_Node_Str" + netid));
  if (netid == null || password == null)   return BAD_ARGS;
  EPerson eperson=null;
  try {
    eperson=EPerson.findByNetid(context,netid.toLowerCase());
  }
 catch (  SQLException e) {
  }
  boolean loggedIn=false;
  SpeakerToLDAP ldap=new SpeakerToLDAP(log);
  if (eperson != null) {
    if (eperson.getRequireCertificate())     return CERT_REQUIRED;
 else     if (!eperson.canLogIn())     return BAD_ARGS;
{
      if (ldap.ldapAuthenticate(netid,password,context)) {
        context.setCurrentUser(eperson=EPerson.findByNetid(context,netid.toLowerCase()));
        log.info(LogManager.getHeader(context,"String_Node_Str","String_Node_Str"));
        return SUCCESS;
      }
 else       return BAD_CREDENTIALS;
    }
  }
 else {
    if (ldap.ldapAuthenticate(netid,password,context)) {
      log.info(LogManager.getHeader(context,"String_Node_Str","String_Node_Str" + netid));
      if ((ldap.ldapEmail != null) && (!ldap.ldapEmail.equals("String_Node_Str"))) {
        try {
          eperson=EPerson.findByEmail(context,ldap.ldapEmail);
          if (eperson != null) {
            log.info(LogManager.getHeader(context,"String_Node_Str","String_Node_Str"));
            context.setIgnoreAuthorization(true);
            eperson.setNetid(netid);
            eperson.update();
            context.commit();
            context.setIgnoreAuthorization(false);
            context.setCurrentUser(eperson);
            return SUCCESS;
          }
 else {
            if (canSelfRegister(context,request,netid)) {
              try {
                context.setIgnoreAuthorization(true);
                eperson=EPerson.create(context);
                if ((ldap.ldapEmail != null) && (!ldap.ldapEmail.equals("String_Node_Str")))                 eperson.setEmail(ldap.ldapEmail);
 else                 eperson.setEmail(netid);
                if ((ldap.ldapGivenName != null) && (!ldap.ldapGivenName.equals("String_Node_Str")))                 eperson.setFirstName(ldap.ldapGivenName);
                if ((ldap.ldapSurname != null) && (!ldap.ldapSurname.equals("String_Node_Str")))                 eperson.setLastName(ldap.ldapSurname);
                if ((ldap.ldapPhone != null) && (!ldap.ldapPhone.equals("String_Node_Str")))                 eperson.setMetadata("String_Node_Str",ldap.ldapPhone);
                eperson.setNetid(netid);
                eperson.setCanLogIn(true);
                AuthenticationManager.initEPerson(context,request,eperson);
                eperson.update();
                context.commit();
              }
 catch (              AuthorizeException e) {
                return NO_SUCH_USER;
              }
 finally {
                context.setIgnoreAuthorization(false);
              }
              log.info(LogManager.getHeader(context,"String_Node_Str","String_Node_Str"));
              return SUCCESS;
            }
 else {
              log.info(LogManager.getHeader(context,"String_Node_Str","String_Node_Str"));
              return NO_SUCH_USER;
            }
          }
        }
 catch (        AuthorizeException e) {
          eperson=null;
        }
 finally {
          context.setIgnoreAuthorization(false);
        }
      }
    }
  }
  return BAD_ARGS;
}

Fixed version (ground truth):
public int authenticate(Context context,String netid,String password,String realm,HttpServletRequest request) throws SQLException {
  log.info(LogManager.getHeader(context,"String_Node_Str","String_Node_Str" + netid));
  if (netid == null || password == null)   return BAD_ARGS;
  EPerson eperson=null;
  try {
    eperson=EPerson.findByNetid(context,netid.toLowerCase());
  }
 catch (  SQLException e) {
  }
  boolean loggedIn=false;
  SpeakerToLDAP ldap=new SpeakerToLDAP(log);
  if (eperson != null) {
    if (eperson.getRequireCertificate())     return CERT_REQUIRED;
 else     if (!eperson.canLogIn())     return BAD_ARGS;
{
      if (ldap.ldapAuthenticate(netid,password,context)) {
        context.setCurrentUser(eperson=EPerson.findByNetid(context,netid.toLowerCase()));
        log.info(LogManager.getHeader(context,"String_Node_Str","String_Node_Str"));
        return SUCCESS;
      }
 else       return BAD_CREDENTIALS;
    }
  }
 else {
    if (ldap.ldapAuthenticate(netid,password,context)) {
      log.info(LogManager.getHeader(context,"String_Node_Str","String_Node_Str" + netid));
      if ((ldap.ldapEmail != null) && (!ldap.ldapEmail.equals("String_Node_Str"))) {
        try {
          eperson=EPerson.findByEmail(context,ldap.ldapEmail);
          if (eperson != null) {
            log.info(LogManager.getHeader(context,"String_Node_Str","String_Node_Str"));
            context.setIgnoreAuthorization(true);
            eperson.setNetid(netid);
            eperson.update();
            context.commit();
            context.setIgnoreAuthorization(false);
            context.setCurrentUser(eperson);
            return SUCCESS;
          }
 else {
            if (canSelfRegister(context,request,netid)) {
              try {
                context.setIgnoreAuthorization(true);
                eperson=EPerson.create(context);
                if ((ldap.ldapEmail != null) && (!ldap.ldapEmail.equals("String_Node_Str")))                 eperson.setEmail(ldap.ldapEmail);
 else                 eperson.setEmail(netid);
                if ((ldap.ldapGivenName != null) && (!ldap.ldapGivenName.equals("String_Node_Str")))                 eperson.setFirstName(ldap.ldapGivenName);
                if ((ldap.ldapSurname != null) && (!ldap.ldapSurname.equals("String_Node_Str")))                 eperson.setLastName(ldap.ldapSurname);
                if ((ldap.ldapPhone != null) && (!ldap.ldapPhone.equals("String_Node_Str")))                 eperson.setMetadata("String_Node_Str",ldap.ldapPhone);
                eperson.setNetid(netid);
                eperson.setCanLogIn(true);
                AuthenticationManager.initEPerson(context,request,eperson);
                eperson.update();
                context.commit();
                context.setCurrentUser(eperson);
              }
 catch (              AuthorizeException e) {
                return NO_SUCH_USER;
              }
 finally {
                context.setIgnoreAuthorization(false);
              }
              log.info(LogManager.getHeader(context,"String_Node_Str","String_Node_Str"));
              return SUCCESS;
            }
 else {
              log.info(LogManager.getHeader(context,"String_Node_Str","String_Node_Str"));
              return NO_SUCH_USER;
            }
          }
        }
 catch (        AuthorizeException e) {
          eperson=null;
        }
 finally {
          context.setIgnoreAuthorization(false);
        }
      }
    }
  }
  return BAD_ARGS;
}