init.cc
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/*
* "Software pw3270, desenvolvido com base nos códigos fontes do WC3270 e X3270
* (Paul Mattes Paul.Mattes@usa.net), de emulação de terminal 3270 para acesso a
* aplicativos mainframe. Registro no INPI sob o nome G3270.
*
* Copyright (C) <2008> <Banco do Brasil S.A.>
*
* Este programa é software livre. Você pode redistribuí-lo e/ou modificá-lo sob
* os termos da GPL v.2 - Licença Pública Geral GNU, conforme publicado pela
* Free Software Foundation.
*
* Este programa é distribuído na expectativa de ser útil, mas SEM QUALQUER
* GARANTIA; sem mesmo a garantia implícita de COMERCIALIZAÇÃO ou de ADEQUAÇÃO
* A QUALQUER PROPÓSITO EM PARTICULAR. Consulte a Licença Pública Geral GNU para
* obter mais detalhes.
*
* Você deve ter recebido uma cópia da Licença Pública Geral GNU junto com este
* programa; se não, escreva para a Free Software Foundation, Inc., 51 Franklin
* St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Este programa está nomeado como - e possui - linhas de código.
*
* Contatos:
*
* perry.werneck@gmail.com (Alexandre Perry de Souza Werneck)
* erico.mendonca@gmail.com (Erico Mascarenhas Mendonça)
*
*/
/**
* @file src/session/local/init.cc
*
* @brief Implement lib3270 direct access layout (NO IPC).
*
* @author perry.werneck@gmail.com
*
*/
#include "private.h"
#ifdef _WIN32
#include <lmcons.h>
#endif // _WIN32
extern "C" {
#include <lib3270/session.h>
}
/*---[ Implement ]----------------------------------------------------------------------------------*/
namespace TN3270 {
Session * Local::getSessionInstance() {
return new Local::Session();
}
#ifdef _WIN32
string getUserName() {
char username[UNLEN + 1];
DWORD szName = sizeof(username);
memset(username,0,UNLEN + 1);
if(!GetUserName(username, &szName)) {
return "?";
}
return string(username);
}
static void writeLog(HANDLE hEventLog, const char *msg, int rc = (int) GetLastError()) {
debug(msg," rc=",rc);
if(hEventLog) {
string username = getUserName();
char lasterror[1024];
snprintf(lasterror,sizeof(lasterror),"The error code was %d",rc);
const char *outMsg[] = {
username.c_str(),
msg,
lasterror
};
ReportEvent(
hEventLog,
EVENTLOG_ERROR_TYPE,
1,
0,
NULL,
(sizeof(outMsg) / sizeof(outMsg[0])),
0,
outMsg,
NULL
);
}
}
static string getInstallLocation(HANDLE hEventLog) {
LSTATUS rc;
HKEY hKey = 0;
static const char * keys[] = {
#ifdef LIB3270_NAME
"Software\\" LIB3270_STRINGIZE_VALUE_OF(LIB3270_NAME),
"Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\" LIB3270_STRINGIZE_VALUE_OF(LIB3270_NAME),
#endif
"Software\\pw3270",
"Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\pw3270"
};
size_t ix;
string installLocation;
for(ix = 0; installLocation.empty() && ix < (sizeof(keys)/sizeof(keys[0])); ix++) {
debug(ix,"=",keys[ix]);
rc = RegOpenKeyEx(HKEY_LOCAL_MACHINE,keys[ix],0,KEY_QUERY_VALUE,&hKey);
if(rc == ERROR_SUCCESS) {
unsigned long datatype; // #defined in winnt.h (predefined types 0-11)
char datadir[4096];
unsigned long datalen = sizeof(datadir);
memset(datadir,0,datalen);
rc = RegQueryValueExA(hKey,"InstallLocation",NULL,&datatype,(LPBYTE) datadir,&datalen);
if(rc == ERROR_SUCCESS) {
debug("Found: ",datadir);
installLocation.assign(datadir);
string username = getUserName();
const char *outMsg[] = {
username.c_str(),
"Found LIB3270 installation",
keys[ix],
installLocation.c_str()
};
ReportEvent(
hEventLog,
EVENTLOG_INFORMATION_TYPE,
1,
0,
NULL,
(sizeof(outMsg) / sizeof(outMsg[0])),
0,
outMsg,
NULL
);
}
RegCloseKey(hKey);
}
}
return installLocation;
}
#endif // _WIN32
Local::Session::Session() : Abstract::Session() {
std::lock_guard<std::mutex> lock(sync);
#ifdef _WIN32
{
static bool initialized = false;
if(!initialized) {
#ifdef LIB3270_NAME
HANDLE hEventLog = RegisterEventSource(NULL, LIB3270_STRINGIZE_VALUE_OF(LIB3270_NAME));
#else
HANDLE hEventLog = RegisterEventSource(NULL, PACKAGE_NAME);
#endif // LIB3270_NAME
string installLocation = getInstallLocation(hEventLog);
if(installLocation.empty()) {
writeLog(hEventLog, "Can't identify lib3270 installation path");
} else {
// TODO: Understand why SetDefaultDllDirectories & AddDllDirectory causes failure in DNS resolution.
SetCurrentDirectory(installLocation.c_str());
/*
wchar_t *path = (wchar_t *) malloc(sizeof(datadir)*sizeof(wchar_t));
mbstowcs(path, datadir, 4095);
if(!SetDefaultDllDirectories(LOAD_LIBRARY_SEARCH_USER_DIRS)) {
writeLog(hEventLog,"SetDefaultDllDirectories has failed");
}
#ifdef DEBUG
else {
debug("SetDefaultDllDirectories has suceeded");
}
#endif
if(!AddDllDirectory(path)) {
string msg = "Can't add ";
msg += datadir;
msg += " to directory path";
writeLog(hEventLog,msg.c_str());
}
#ifdef DEBUG
else {
debug("AddDllDirectory has suceeded");
}
#endif
free(path);
*/
}
initialized = true;
DeregisterEventSource(hEventLog);
}
}
#endif // _WIN32
this->hSession = lib3270_session_new("");
lib3270_set_user_data(this->hSession,(void *) this);
setCharSet();
lib3270_set_popup_handler(this->hSession, popupHandler);
// Setup callbacks
struct lib3270_session_callbacks *cbk;
cbk = lib3270_get_session_callbacks(this->hSession,sizeof(struct lib3270_session_callbacks));
if(!cbk) {
throw runtime_error( _("Invalid callback table, possible version mismatch in lib3270") );
}
cbk->update_connect = connectHandler;
}
Local::Session::~Session() {
std::lock_guard<std::mutex> lock(sync);
lib3270_session_free(this->hSession);
this->hSession = nullptr;
}
}