VSI submission: redirect terminal input through socket

This is needed, because on VMS, select() can only be used on sockets.  being
able to use select() on all kinds of file descriptors is unique to Unix.

So, the solution for VMS is to create a layer that translates input from
standard input to socket communication.

Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>

1 files changed, 597 insertions, 0 deletions

diff --git a/apps/vms_term_sock.c b/apps/vms_term_sock.c
new file mode 100644
index 0000000000..33d81cc193
--- /dev/null
+++ b/apps/vms_term_sock.c
@@ -0,0 +1,597 @@
+#ifdef __VMS 
+#define OPENSSL_SYS_VMS
+#pragma message disable DOLLARID
+
+
+#include <openssl/OPENSSLCONF.H>
+
+#if !defined(_POSIX_C_SOURCE) && defined(OPENSSL_SYS_VMS)
+/*
+ * On VMS, you need to define this to get the declaration of fileno().  The
+ * value 2 is to make sure no function defined in POSIX-2 is left undefined.
+ */
+# define _POSIX_C_SOURCE 2
+#endif
+
+#include <stdio.h>
+
+#undef _POSIX_C_SOURCE
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <inet.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <starlet.h>
+#include <iodef.h>
+#ifdef __alpha
+#include <iosbdef.h>
+#else
+typedef struct _iosb {			/* Copied from IOSBDEF.H for Alpha  */
+#pragma __nomember_alignment
+    __union  {
+        __struct  {
+            unsigned short int iosb$w_status; /* Final I/O status           */
+            __union  {
+                __struct  {             /* 16-bit byte count variant        */
+                    unsigned short int iosb$w_bcnt; /* 16-bit byte count    */
+                    __union  {
+                        unsigned int iosb$l_dev_depend; /* 32-bit device dependent info */
+                        unsigned int iosb$l_pid; /* 32-bit pid              */
+                        } iosb$r_l;
+                    } iosb$r_bcnt_16;
+                __struct  {             /* 32-bit byte count variant        */
+                    unsigned int iosb$l_bcnt; /* 32-bit byte count (unaligned) */
+                    unsigned short int iosb$w_dev_depend_high; /* 16-bit device dependent info */
+                    } iosb$r_bcnt_32;
+                } iosb$r_devdepend;
+            } iosb$r_io_64;
+        __struct  {
+            __union  {
+                unsigned int iosb$l_getxxi_status; /* Final GETxxI status   */
+                unsigned int iosb$l_reg_status; /* Final $Registry status   */
+                } iosb$r_l_status;
+            unsigned int iosb$l_reserved; /* Reserved field                 */
+            } iosb$r_get_64;
+        } iosb$r_io_get;
+    } IOSB;
+
+#if !defined(__VAXC)
+#define iosb$w_status iosb$r_io_get.iosb$r_io_64.iosb$w_status
+#define iosb$w_bcnt iosb$r_io_get.iosb$r_io_64.iosb$r_devdepend.iosb$r_bcnt_16.iosb$w_bcnt
+#define iosb$r_l        iosb$r_io_get.iosb$r_io_64.iosb$r_devdepend.iosb$r_bcnt_16.iosb$r_l
+#define iosb$l_dev_depend iosb$r_l.iosb$l_dev_depend
+#define iosb$l_pid iosb$r_l.iosb$l_pid
+#define iosb$l_bcnt iosb$r_io_get.iosb$r_io_64.iosb$r_devdepend.iosb$r_bcnt_32.iosb$l_bcnt
+#define iosb$w_dev_depend_high iosb$r_io_get.iosb$r_io_64.iosb$r_devdepend.iosb$r_bcnt_32.iosb$w_dev_depend_high
+#define iosb$l_getxxi_status iosb$r_io_get.iosb$r_get_64.iosb$r_l_status.iosb$l_getxxi_status
+#define iosb$l_reg_status iosb$r_io_get.iosb$r_get_64.iosb$r_l_status.iosb$l_reg_status
+#endif          /* #if !defined(__VAXC) */
+
+#endif					/* End of IOSBDEF */
+
+#include <efndef.h>
+#include <stdlib.h>
+#include <ssdef.h>
+#include <time.h>
+#include <stdarg.h>
+#include <descrip.h>
+
+#include "vms_term_sock.h"
+
+#ifdef __alpha
+static struct _iosb TerminalDeviceIosb;
+#else
+IOSB TerminalDeviceIosb;
+#endif
+
+static char TerminalDeviceBuff[255 + 2];
+static int TerminalSocketPair[2] = {0, 0};
+static unsigned short TerminalDeviceChan = 0;
+
+static int CreateSocketPair (int, int, int, int *);
+static void SocketPairTimeoutAst (int);
+static int TerminalDeviceAst (int);
+static void LogMessage (char *, ...);
+
+/*
+** Socket Pair Timeout Value (must be 0-59 seconds)
+*/
+#define SOCKET_PAIR_TIMEOUT_VALUE 20
+
+/*
+** Socket Pair Timeout Block which is passed to timeout AST
+*/
+typedef struct _SocketPairTimeoutBlock {
+    unsigned short SockChan1;
+    unsigned short SockChan2;
+    } SPTB;
+
+#ifdef TERM_SOCK_TEST
+
+/*----------------------------------------------------------------------------*/
+/*                                                                            */
+/*----------------------------------------------------------------------------*/
+int main (int argc, char *argv[], char *envp[])
+{
+char TermBuff[80];
+int TermSock,
+    status,
+    len;
+
+LogMessage ("Enter 'q' or 'Q' to quit ...");
+while (strcasecmp (TermBuff, "Q"))
+    {
+    /*
+    ** Create the terminal socket
+    */
+    status = TerminalSocket (TERM_SOCK_CREATE, &TermSock);
+    if (status != TERM_SOCK_SUCCESS)
+	exit (1);
+
+    /*
+    ** Process the terminal input
+    */
+    LogMessage ("Waiting on terminal I/O ...\n");
+    len = recv (TermSock, TermBuff, sizeof (TermBuff), 0) ;
+    TermBuff[len] = '\0';
+    LogMessage ("Received terminal I/O [%s]", TermBuff);
+
+    /*
+    ** Delete the terminal socket
+    */
+    status = TerminalSocket (TERM_SOCK_DELETE, &TermSock);
+    if (status != TERM_SOCK_SUCCESS)
+	exit (1);
+    }
+
+return 1;
+
+}
+#endif 
+
+/*----------------------------------------------------------------------------*/
+/*                                                                            */
+/*----------------------------------------------------------------------------*/
+int TerminalSocket (int FunctionCode, int *ReturnSocket)
+{
+int status;
+$DESCRIPTOR (TerminalDeviceDesc, "SYS$COMMAND");
+
+/*
+** Process the requested function code
+*/
+switch (FunctionCode)
+   {
+   case TERM_SOCK_CREATE:
+	/*
+	** Create a socket pair
+	*/
+	status = CreateSocketPair (AF_INET, SOCK_STREAM, 0, TerminalSocketPair);
+	if (status == -1)
+	    {
+	    LogMessage ("TerminalSocket: CreateSocketPair () - %08X", status);
+	    if (TerminalSocketPair[0])
+		close (TerminalSocketPair[0]);
+	    if (TerminalSocketPair[1])
+		close (TerminalSocketPair[1]);
+	    return (TERM_SOCK_FAILURE);
+	    }
+
+	/*
+	** Assign a channel to the terminal device
+	*/
+	status = sys$assign (&TerminalDeviceDesc,
+			     &TerminalDeviceChan, 
+			     0, 0, 0);
+	if (! (status & 1))
+	    {
+	    LogMessage ("TerminalSocket: SYS$ASSIGN () - %08X", status);
+	    close (TerminalSocketPair[0]);
+	    close (TerminalSocketPair[1]);
+	    return (TERM_SOCK_FAILURE);
+	    }
+
+	/*
+	** Queue an async IO to the terminal device
+	*/
+	status = sys$qio (EFN$C_ENF,
+			  TerminalDeviceChan,
+	                  IO$_READVBLK,
+	                  &TerminalDeviceIosb, 
+			  TerminalDeviceAst, 
+			  0, 
+	                  TerminalDeviceBuff,
+	                  sizeof (TerminalDeviceBuff) - 2,
+	                  0, 0, 0, 0);
+	if (! (status & 1))
+	    {
+	    LogMessage ("TerminalSocket: SYS$QIO () - %08X", status);
+	    close (TerminalSocketPair[0]);
+	    close (TerminalSocketPair[1]);
+	    return (TERM_SOCK_FAILURE);
+	    }
+
+	/*
+	** Return the input side of the socket pair
+	*/
+	*ReturnSocket = TerminalSocketPair[1];
+        break;
+
+   case TERM_SOCK_DELETE:
+	/*
+	** Cancel any pending IO on the terminal channel
+	*/
+	status = sys$cancel (TerminalDeviceChan);
+	if (! (status & 1))
+	    {
+	    LogMessage ("TerminalSocket: SYS$CANCEL () - %08X", status);
+	    close (TerminalSocketPair[0]);
+	    close (TerminalSocketPair[1]);
+	    return (TERM_SOCK_FAILURE);
+	    }
+
+	/*
+	** Deassign the terminal channel
+	*/
+	status = sys$dassgn (TerminalDeviceChan);
+	if (! (status & 1))
+	    {
+	    LogMessage ("TerminalSocket: SYS$DASSGN () - %08X", status);
+	    close (TerminalSocketPair[0]);
+	    close (TerminalSocketPair[1]);
+	    return (TERM_SOCK_FAILURE);
+	    }
+
+	/*
+	** Close the terminal socket pair
+	*/
+	close (TerminalSocketPair[0]);
+	close (TerminalSocketPair[1]);
+
+	/*
+	** Return the initialized socket
+	*/
+	*ReturnSocket = 0;
+	break;
+
+    default:
+	/*
+	** Invalid function code
+	*/
+	LogMessage ("TerminalSocket: Invalid Function Code - %d", FunctionCode);
+	return (TERM_SOCK_FAILURE);
+	break;
+    }	
+
+/*
+** Return success
+*/
+return (TERM_SOCK_SUCCESS);
+
+}
+
+/*----------------------------------------------------------------------------*/
+/*                                                                            */
+/*----------------------------------------------------------------------------*/
+static int CreateSocketPair (
+    int		SocketFamily,
+    int		SocketType,
+    int		SocketProtocol,
+    int		*SocketPair)
+{
+struct dsc$descriptor AscTimeDesc = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, NULL};
+static const char* LocalHostAddr = {"127.0.0.1"};
+unsigned short TcpAcceptChan = 0,
+	       TcpDeviceChan = 0;
+unsigned long BinTimeBuff[2];
+struct sockaddr_in sin;
+char AscTimeBuff[32];
+short LocalHostPort;
+int status; 
+unsigned int slen;
+
+#ifdef __alpha
+struct _iosb iosb;
+#else
+IOSB iosb;
+#endif
+
+int SockDesc1 = 0,
+    SockDesc2 = 0;
+SPTB sptb;
+$DESCRIPTOR (TcpDeviceDesc, "TCPIP$DEVICE");
+
+/*
+** Create a socket
+*/
+SockDesc1 = socket (SocketFamily, SocketType, 0);
+if (SockDesc1 < 0)
+    {
+    LogMessage ("CreateSocketPair: socket () - %d", errno);
+    return (-1);
+    }
+
+/*
+** Initialize the socket information
+*/
+slen = sizeof (sin);
+memset ((char *) &sin, 0, slen);
+sin.sin_family = SocketFamily;
+sin.sin_addr.s_addr = inet_addr (LocalHostAddr);
+sin.sin_port = 0;
+
+/*
+** Bind the socket to the local IP
+*/
+status = bind (SockDesc1, (struct sockaddr *) &sin, slen);
+if (status < 0)
+    {
+    LogMessage ("CreateSocketPair: bind () - %d", errno);
+    close (SockDesc1);   
+    return (-1);
+    }
+
+/*
+** Get the socket name so we can save the port number
+*/
+status = getsockname (SockDesc1, (struct sockaddr *) &sin, &slen);
+if (status < 0)
+    {
+    LogMessage ("CreateSocketPair: getsockname () - %d", errno);
+    close (SockDesc1); 
+    return (-1);
+    }
+else
+    LocalHostPort = sin.sin_port;			
+
+/*
+** Setup a listen for the socket
+*/
+listen (SockDesc1, 5);
+
+/*
+** Get the binary (64-bit) time of the specified timeout value
+*/
+sprintf (AscTimeBuff, "0 0:0:%02d.00", SOCKET_PAIR_TIMEOUT_VALUE);
+AscTimeDesc.dsc$w_length = strlen (AscTimeBuff);
+AscTimeDesc.dsc$a_pointer = AscTimeBuff;
+status = sys$bintim (&AscTimeDesc, BinTimeBuff);
+if (! (status & 1))
+    {
+    LogMessage ("CreateSocketPair: SYS$BINTIM () - %08X", status);
+    close (SockDesc1);
+    return (-1);
+    }
+
+/*
+** Assign another channel to the TCP/IP device for the accept.
+** This is the channel that ends up being connected to.
+*/
+status = sys$assign (&TcpDeviceDesc, &TcpDeviceChan, 0, 0, 0);
+if (! (status & 1))
+    {
+    LogMessage ("CreateSocketPair: SYS$ASSIGN () - %08X", status);
+    close (SockDesc1);
+    return (-1);
+    }
+
+/*
+** Get the channel of the first socket for the accept
+*/
+TcpAcceptChan = decc$get_sdc (SockDesc1);		
+
+/*
+** Perform the accept using $QIO so we can do this asynchronously
+*/
+status = sys$qio (EFN$C_ENF, 
+		  TcpAcceptChan,
+                  IO$_ACCESS | IO$M_ACCEPT,
+                  &iosb,
+		  0, 0, 0, 0, 0,
+                  &TcpDeviceChan,
+                  0, 0);
+if (! (status & 1))
+    {
+    LogMessage ("CreateSocketPair: SYS$QIO () - %08X", status);
+    close (SockDesc1);
+    sys$dassgn (TcpDeviceChan);
+    return (-1);
+    }
+
+/*
+** Create the second socket to do the connect
+*/
+SockDesc2 = socket (SocketFamily, SocketType, 0);
+if (SockDesc2 < 0)
+    {
+    LogMessage ("CreateSocketPair: socket () - %d", errno);
+    sys$cancel (TcpAcceptChan);
+    close (SockDesc1);
+    sys$dassgn (TcpDeviceChan);
+    return (-1) ;
+    } 
+
+/*
+** Setup the Socket Pair Timeout Block
+*/
+sptb.SockChan1 = TcpAcceptChan;
+sptb.SockChan2 = decc$get_sdc (SockDesc2);
+
+/*
+** Before we block on the connect, set a timer that can cancel I/O on our two 
+** sockets if it never connects.
+*/
+status = sys$setimr (EFN$C_ENF, 
+		     BinTimeBuff, 
+		     SocketPairTimeoutAst, 
+		     &sptb, 
+		     0);
+if (! (status & 1))
+    {
+    LogMessage ("CreateSocketPair: SYS$SETIMR () - %08X", status);
+    sys$cancel (TcpAcceptChan);
+    close (SockDesc1);
+    close (SockDesc2);
+    sys$dassgn (TcpDeviceChan);
+    return (-1);
+    }
+
+/*
+** Now issue the connect
+*/
+memset ((char *) &sin, 0, sizeof (sin)) ;
+sin.sin_family = SocketFamily;
+sin.sin_addr.s_addr = inet_addr (LocalHostAddr) ;
+sin.sin_port = LocalHostPort ;
+
+status = connect (SockDesc2, (struct sockaddr *) &sin, sizeof (sin));
+if (status < 0 )
+    {
+    LogMessage ("CreateSocketPair: connect () - %d", errno);
+    sys$cantim (&sptb, 0);
+    sys$cancel (TcpAcceptChan);
+    close (SockDesc1);
+    close (SockDesc2);
+    sys$dassgn (TcpDeviceChan);
+    return (-1);
+    }
+
+/*
+** Wait for the asynch $QIO to finish.  Note that if the I/O was aborted 
+** (SS$_ABORT), then we probably canceled it from the AST routine - so log a 
+** timeout.
+*/
+status = sys$synch (EFN$C_ENF, &iosb);
+if (! (iosb.iosb$w_status & 1))
+    {
+    if (iosb.iosb$w_status == SS$_ABORT)
+	LogMessage ("CreateSocketPair: SYS$QIO(iosb) timeout");
+    else 
+	{
+        LogMessage ("CreateSocketPair: SYS$QIO(iosb) - %d", iosb.iosb$w_status);
+        sys$cantim (&sptb, 0);
+        }
+    close (SockDesc1);
+    close (SockDesc2);
+    sys$dassgn (TcpDeviceChan);
+    return (-1);
+    }
+
+/*
+** Here we're successfully connected, so cancel the timer, convert the I/O 
+** channel to a socket fd, close the listener socket and return the connected 
+** pair.
+*/
+sys$cantim (&sptb, 0);
+
+close (SockDesc1) ;
+SocketPair[0] = SockDesc2 ;
+SocketPair[1] = socket_fd (TcpDeviceChan);
+
+return (0) ;
+
+}
+
+/*----------------------------------------------------------------------------*/
+/*                                                                            */
+/*----------------------------------------------------------------------------*/
+static void SocketPairTimeoutAst (int astparm)
+{
+SPTB *sptb = (SPTB *) astparm;
+
+sys$cancel (sptb->SockChan2);			/* Cancel the connect() */
+sys$cancel (sptb->SockChan1);			/* Cancel the accept() 	*/
+
+return;
+
+}
+
+/*----------------------------------------------------------------------------*/
+/*                                                                            */
+/*----------------------------------------------------------------------------*/
+static int TerminalDeviceAst (int astparm)
+{
+int status;
+
+/*
+** Terminate the terminal buffer
+*/
+TerminalDeviceBuff[TerminalDeviceIosb.iosb$w_bcnt] = '\0';
+strcat (TerminalDeviceBuff, "\n");
+
+/*
+** Send the data read from the terminal device throught the socket pair
+*/
+send (TerminalSocketPair[0], TerminalDeviceBuff, TerminalDeviceIosb.iosb$w_bcnt + 1, 0);
+
+/*
+** Queue another async IO to the terminal device
+*/
+status = sys$qio (EFN$C_ENF,
+         	  TerminalDeviceChan,
+         	  IO$_READVBLK,
+         	  &TerminalDeviceIosb, 
+	 	  TerminalDeviceAst, 
+	 	  0, 
+         	  TerminalDeviceBuff,
+         	  sizeof (TerminalDeviceBuff) - 1,
+         	  0, 0, 0, 0);
+
+/*
+** Return status
+*/
+return status;
+
+}
+
+/*----------------------------------------------------------------------------*/
+/*                                                                            */
+/*----------------------------------------------------------------------------*/
+static void LogMessage (char *msg, ...)
+{
+char *Month[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", 
+                 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
+static unsigned int pid = 0;
+va_list args;
+time_t CurTime;
+struct tm *LocTime;
+char MsgBuff[256];
+
+/*
+** Get the process pid
+*/
+if (pid == 0)
+    pid = getpid ();
+
+/*
+** Convert the current time into local time
+*/
+CurTime = time (NULL);
+LocTime = localtime (&CurTime);
+
+/*
+** Format the message buffer
+*/
+sprintf (MsgBuff, "%02d-%s-%04d %02d:%02d:%02d [%08X] %s\n",
+         LocTime->tm_mday, Month[LocTime->tm_mon], (LocTime->tm_year + 1900),
+         LocTime->tm_hour, LocTime->tm_min, LocTime->tm_sec, pid, msg);
+
+/*
+** Get any variable arguments and add them to the print of the message buffer 
+*/
+va_start (args, msg);
+vfprintf (stderr, MsgBuff, args);
+va_end (args);
+
+/*
+** Flush standard error output
+*/
+fsync (fileno (stderr));
+
+return;
+
+}
+#endif