tools.c
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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 ', 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 unsecure.c e possui - linhas de código.
*
* Contatos:
*
* perry.werneck@gmail.com (Alexandre Perry de Souza Werneck)
* erico.mendonca@gmail.com (Erico Mascarenhas de Mendonça)
*
*/
/**
* @brief Common methods for send/recv errors.
*
*/
#include <config.h>
#include <lib3270.h>
#include <lib3270/log.h>
#include <internals.h>
#include <networking.h>
#include <fcntl.h>
#ifdef _WIN32
#include <lib3270/win32.h>
#endif // _WIN32
/*--[ Implement ]------------------------------------------------------------------------------------*/
int lib3270_socket_recv_failed(H3270 *hSession) {
#ifdef _WIN32
int wsaError = WSAGetLastError();
// EWOULDBLOCK & EAGAIN should return directly.
if(wsaError == WSAEWOULDBLOCK)
return -EWOULDBLOCK;
if(wsaError == WSAEINPROGRESS)
return -EAGAIN;
int rc = -wsaError;
// TODO: Translate WSA Error, update message body.
lib3270_set_network_error(
hSession,
_("Error receiving data from host"),
_("The windows error code was %u"),
(unsigned int) wsaError
);
#else
// EWOULDBLOCK & EAGAIN should return directly.
if(errno == EWOULDBLOCK || errno == EAGAIN)
return -errno;
// Network error, notify user
int rc = -errno;
lib3270_set_network_error(
hSession,
_("Error receiving data from host"),
_("The system error code was %d (%s)"),
errno,
strerror(errno)
);
#endif // _WIN32
return rc;
}
int lib3270_socket_send_failed(H3270 *hSession) {
#ifdef _WIN32
lib3270_set_network_error(
hSession,
_("Erro sending data to host"),
_("The windows error code was %u"),
(unsigned int) WSAGetLastError()
);
#else
int rc = errno;
switch(rc) {
case EPIPE:
lib3270_set_network_error(
hSession,
_("Broken pipe"),
_("The system error code was %d"),
rc
);
break;
case ECONNRESET:
lib3270_set_network_error(
hSession,
_("Connection reset by peer"),
_("The system error code was %d"),
rc
);
break;
case EINTR:
return 0;
default:
lib3270_set_network_error(
hSession,
_("Unexpected error writing to network socket"),
_("The system error code was %d (%s)"),
rc, strerror(rc)
);
}
#endif // _WIN32
return -1;
}
int lib3270_socket_set_non_blocking(H3270 *hSession, int sock, const unsigned char on) {
if(sock < 0)
return 0;
#ifdef WIN32
WSASetLastError(0);
u_long iMode= on ? 1 : 0;
if(ioctlsocket(sock,FIONBIO,&iMode)) {
lib3270_popup_dialog( hSession,
LIB3270_NOTIFY_ERROR,
_( "Connection error" ),
_( "ioctlsocket(FIONBIO) failed." ),
"%s", lib3270_win32_strerror(GetLastError()));
return -1;
}
#else
int f;
if ((f = fcntl(sock, F_GETFL, 0)) == -1) {
lib3270_popup_dialog( hSession,
LIB3270_NOTIFY_ERROR,
_( "Socket error" ),
_( "fcntl() error when getting socket state." ),
_( "%s" ), strerror(errno)
);
return -1;
}
if (on)
f |= O_NDELAY;
else
f &= ~O_NDELAY;
if (fcntl(sock, F_SETFL, f) < 0) {
lib3270_popup_dialog( hSession,
LIB3270_NOTIFY_ERROR,
_( "Socket error" ),
on ? _( "Can't set socket to blocking mode." ) : _( "Can't set socket to non blocking mode" ),
_( "%s" ), strerror(errno)
);
return -1;
}
#endif
debug("Socket %d is now %s",sock,(on ? "Non Blocking" : "Blocking"));
return 0;
}
static const char * crl_download_protocols[] = {
NULL,
"http",
"https",
#ifdef HAVE_LDAP
"ldap",
"ldaps"
#endif // HAVE_LDAP
};
const char * lib3270_crl_get_preferred_protocol(const H3270 *hSession) {
debug("%s: selected: %d",__FUNCTION__,(int) hSession->ssl.crl_preferred_protocol);
if(hSession->ssl.crl_preferred_protocol < (sizeof(crl_download_protocols)/sizeof(crl_download_protocols[0])))
return crl_download_protocols[hSession->ssl.crl_preferred_protocol];
errno = EINVAL;
return NULL;
}
int lib3270_crl_set_preferred_protocol(H3270 *hSession, const char *protocol) {
FAIL_IF_ONLINE(hSession);
debug("%s(%s)",__FUNCTION__,protocol);
size_t ix;
for(ix = 0; ix < (sizeof(crl_download_protocols)/sizeof(crl_download_protocols[0])); ix++) {
debug("[%s] [%s]",protocol,crl_download_protocols[ix]);
if(crl_download_protocols[ix] && !strcasecmp(protocol,crl_download_protocols[ix])) {
hSession->ssl.crl_preferred_protocol = (unsigned short) ix;
return 0;
}
}
debug("Unsupported protocol: %s",protocol);
return EINVAL;
}
LIB3270_EXPORT int lib3270_getpeername(H3270 *hSession, struct sockaddr *addr, socklen_t *addrlen) {
FAIL_IF_NOT_ONLINE(hSession);
return hSession->network.module->getpeername(hSession, addr, addrlen);
}
LIB3270_EXPORT int lib3270_getsockname(H3270 *hSession, struct sockaddr *addr, socklen_t *addrlen) {
FAIL_IF_NOT_ONLINE(hSession);
return hSession->network.module->getsockname(hSession, addr, addrlen);
}