From 88a4d8f48edcdc87c33920f1eb9431316672c4de Mon Sep 17 00:00:00 2001
From: perry.werneck@gmail.com <perry.werneck@gmail.com@d25448e0-c022-0410-b998-a785f7053de0>
Date: Wed, 4 Dec 2013 13:59:20 +0000
Subject: [PATCH] Iniciando substituição das chamadas a gethostbyname

---
 pw3270.cbp            |   3 +++
 src/lib3270/connect.c | 314 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 317 insertions(+), 0 deletions(-)
 create mode 100644 src/lib3270/connect.c

diff --git a/pw3270.cbp b/pw3270.cbp
index 9a4816b..2844b41 100644
--- a/pw3270.cbp
+++ b/pw3270.cbp
@@ -108,6 +108,9 @@
 			<Option compilerVar="CC" />
 		</Unit>
 		<Unit filename="src/lib3270/charset.h" />
+		<Unit filename="src/lib3270/connect.c">
+			<Option compilerVar="CC" />
+		</Unit>
 		<Unit filename="src/lib3270/ctlr.c">
 			<Option compilerVar="CC" />
 		</Unit>
diff --git a/src/lib3270/connect.c b/src/lib3270/connect.c
new file mode 100644
index 0000000..a811302
--- /dev/null
+++ b/src/lib3270/connect.c
@@ -0,0 +1,314 @@
+/*
+ * "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 connect.c e possui - linhas de código.
+ *
+ * Contatos:
+ *
+ * perry.werneck@gmail.com	(Alexandre Perry de Souza Werneck)
+ * erico.mendonca@gmail.com	(Erico Mascarenhas Mendonça)
+ *
+ */
+
+/*---[ Implement ]-------------------------------------------------------------------------------*/
+
+ LIB3270_EXPORT int lib3270_sock_connect(H3270 *hSession, const char *hostname, const char *srvc, int timeout)
+ {
+ 	int					  s;
+ 	int					  sock			= -1;
+	struct addrinfo		  hints;
+	struct addrinfo 	* result		= NULL;
+	struct addrinfo 	* rp			= NULL;
+	LIB3270_MESSAGE		  saved_status	= hSession->oia_status;
+
+	memset(&hints, 0, sizeof(struct addrinfo));
+	hints.ai_family 	= AF_UNSPEC;	/* Allow IPv4 or IPv6 */
+	hints.ai_socktype	= SOCK_STREAM;	/* Stream socket */
+	hints.ai_flags		= AI_PASSIVE;	/* For wildcard IP address */
+	hints.ai_protocol	= 0;			/* Any protocol */
+	hints.ai_canonname	= NULL;
+	hints.ai_addr		= NULL;
+	hints.ai_next		= NULL;
+
+	if(timeout < 0)
+		timeout = 10;
+
+	if(*hostname == '$')
+	{
+		const char *name = getenv(hostname+1);
+		if(!name)
+		{
+			lib3270_popup_dialog(	hSession,
+									LIB3270_NOTIFY_ERROR,
+									_( "Connection error" ),
+									_( "Unable to find selected hostname." ),
+									_( "Can't determine value for environment variable \"%s\" " ),
+									hostname);
+			return -1;
+		}
+		hostname = name;
+	}
+
+	status_changed(hSession,LIB3270_STATUS_RESOLVING);
+
+	s = getaddrinfo(hostname, srvc, &hints, &result);
+
+	if(s != 0)
+	{
+		lib3270_popup_dialog(	hSession,
+								LIB3270_NOTIFY_ERROR,
+								_( "Connection error" ),
+								_( "Can't resolve hostname." ),
+								"%s",
+								gai_strerror(s));
+
+		status_changed(hSession,saved_status);
+
+		return -1;
+	}
+
+	status_changed(hSession,LIB3270_STATUS_CONNECTING);
+
+	for(rp = result; sock < 0 && rp != NULL; rp = rp->ai_next)
+	{
+		sock = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
+		if(sock < 0)
+			continue;
+
+#ifdef WIN32
+		u_long block;
+		u_int  len		= sizeof(int);
+
+		WSASetLastError(0);
+		block = 1;
+
+		if(ioctlsocket(sock,FIONBIO,&block))
+		{
+			lib3270_popup_dialog(	hSession,
+									LIB3270_NOTIFY_ERROR,
+									_( "Connection error" ),
+									_( "ioctlsocket(FIONBIO) failed." ),
+									"Windows error %d",
+									WSAGetLastError() );
+			close(sock);
+			sock = -1;
+		}
+		else if(connect(sock, rp->ai_addr, rp->ai_addrlen))
+		{
+			int err = WSAGetLastError();
+			if(err != WSAEWOULDBLOCK)
+			{
+				lib3270_popup_dialog(	hSession,
+										LIB3270_NOTIFY_ERROR,
+										_( "Connection error" ),
+										_( "Can't connect to host." ),
+										"Windows error %d",
+										WSAGetLastError() );
+				close(sock);
+				sock = -1;
+			}
+		}
+
+		if(sock > 0)
+		{
+			// Connection in progress, wait until socket is available for write
+			fd_set				wr;
+			struct timeval		tm;
+			int					status;
+			int					err;
+			socklen_t			len		= sizeof(err);
+
+			FD_ZERO(&wr);
+			FD_SET(sock, &wr);
+			memset(&tm,0,sizeof(tm));
+			tm.tv_sec = timeout;
+
+			switch(select(sock+1, NULL, &wr, NULL, &tm))
+			{
+			case 0:
+				lib3270_popup_dialog(	hSession,
+										LIB3270_NOTIFY_ERROR,
+										_( "Connection error" ),
+										_( "Can't connect to host." ),
+										"%s",
+										strerror(errno = ETIMEDOUT));
+				close(sock);
+				sock = -1;
+				break;
+
+			case -1:
+				lib3270_popup_dialog(	hSession,
+										LIB3270_NOTIFY_ERROR,
+										_( "Connection error" ),
+										_( "select() error when connecting to host." ),
+										"%s",
+										strerror(errno));
+				close(sock);
+				sock = -1;
+				break;
+
+			default:
+				// Se o socket nao esta disponivel para gravacao o connect falhou
+				if(!FD_ISSET(sock,&wr))
+				{
+					lib3270_popup_dialog(	hSession,
+											LIB3270_NOTIFY_ERROR,
+											_( "Connection error" ),
+											_( "Error when connecting to host." ),
+											"%s",
+											_( "Socket was not available after connect" ));
+					close(sock);
+					sock = -1;
+				}
+				else if(getsockopt(sock, SOL_SOCKET, SO_ERROR, (void *) &err, &len) < 0)
+				{
+					lib3270_popup_dialog(	hSession,
+											LIB3270_NOTIFY_ERROR,
+											_( "Connection error" ),
+											_( "Error getting connection state." ),
+											"%s",
+											strerror(errno));
+
+					close(sock);
+					sock = -1;
+				}
+				else if(err)
+				{
+					lib3270_popup_dialog(	hSession,
+											LIB3270_NOTIFY_ERROR,
+											_( "Connection error" ),
+											_( "socket error when connecting to host." ),
+											"Socket error %d",
+											err);
+
+					close(sock);
+					sock = -1;
+				}
+			}
+		}
+
+#else
+		fcntl(sock, F_SETFL,fcntl(sock,F_GETFL,0)|O_NONBLOCK);
+
+		errno = 0;
+		if(connect(sock, rp->ai_addr, rp->ai_addrlen))
+		{
+			if( errno != EINPROGRESS )
+			{
+				lib3270_popup_dialog(	hSession,
+										LIB3270_NOTIFY_ERROR,
+										_( "Connection error" ),
+										_( "Can't connect to host." ),
+										"%s",
+										strerror(errno));
+				close(sock);
+				sock = -1;
+			}
+		}
+
+		if(sock > 0)
+		{
+			// Connection in progress, wait until socket is available for write
+			fd_set				wr;
+			struct timeval		tm;
+			int					status;
+			int					err;
+			socklen_t			len		= sizeof(err);
+
+			FD_ZERO(&wr);
+			FD_SET(sock, &wr);
+			memset(&tm,0,sizeof(tm));
+			tm.tv_sec = timeout;
+
+			switch(select(sock+1, NULL, &wr, NULL, &tm))
+			{
+			case 0:
+				lib3270_popup_dialog(	hSession,
+										LIB3270_NOTIFY_ERROR,
+										_( "Connection error" ),
+										_( "Can't connect to host." ),
+										"%s",
+										strerror(errno = ETIMEDOUT));
+				close(sock);
+				sock = -1;
+				break;
+
+			case -1:
+				lib3270_popup_dialog(	hSession,
+										LIB3270_NOTIFY_ERROR,
+										_( "Connection error" ),
+										_( "select() error when connecting to host." ),
+										"%s",
+										strerror(errno));
+				close(sock);
+				sock = -1;
+				break;
+
+			default:
+
+				// Se o socket nao esta disponivel para gravacao o connect falhou
+				if(!FD_ISSET(sock,&wr))
+				{
+					lib3270_popup_dialog(	hSession,
+											LIB3270_NOTIFY_ERROR,
+											_( "Connection error" ),
+											_( "Error when connecting to host." ),
+											"%s",
+											_( "Socket was not available after connect" ));
+					close(sock);
+					sock = -1;
+				}
+				else if(getsockopt(sock, SOL_SOCKET, SO_ERROR, &err, &len) < 0)
+				{
+					lib3270_popup_dialog(	hSession,
+											LIB3270_NOTIFY_ERROR,
+											_( "Connection error" ),
+											_( "Error getting connection state." ),
+											"%s",
+											strerror(errno));
+
+					close(sock);
+					sock = -1;
+				}
+				else if(err)
+				{
+					lib3270_popup_dialog(	hSession,
+											LIB3270_NOTIFY_ERROR,
+											_( "Connection error" ),
+											_( "socket error when connecting to host." ),
+											"Socket error %d",
+											err);
+
+					close(sock);
+					sock = -1;
+				}
+			}
+		}
+#endif // WIN32
+	}
+
+	freeaddrinfo(result);
+
+	status_changed(hSession,saved_status);
+
+	return sock;
+
+ }
+
--
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