1 files changed, 342 insertions, 0 deletions
diff --git a/unix/os/net/kutil.c b/unix/os/net/kutil.c
new file mode 100644
index 00000000..3e7ddb0d
--- /dev/null
+++ b/unix/os/net/kutil.c
@@ -0,0 +1,342 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#include <stdio.h>
+
+#define	import_kernel
+#define	import_knames
+#define	import_spp
+#include <iraf.h>
+
+
+/*
+ * KUTIL -- Miscellaneous utilities required by the network interface.
+ * Most of these are either portable (no i/o) or are built upon the kernel
+ * i/o routines.
+ */
+
+/* KU_FOPEN -- Open a text file.
+ */
+ku_fopen (fname, mode)
+char	*fname;
+char	*mode;
+{
+	PKCHAR	osfn[SZ_PATHNAME+1];
+	XINT	fmode, chan;
+
+	strcpy ((char *)osfn, fname);
+
+	if (mode[0] == 'r')
+	    fmode = READ_ONLY;
+	else
+	    return (ERR);
+
+	ZOPNTX (osfn, &fmode, &chan);
+
+	return (chan);
+}
+
+
+/* KU_FCLOSE -- Close a text file.
+ */
+ku_fclose (fd)
+int	fd;
+{
+	XINT	chan=fd, status;
+
+	ZCLSTX (&chan, &status);
+	return (status);
+}
+
+
+/* KU_FGETS -- Get a newline delimited line from a text file.  The semantics of
+ * this procedure are like the unix FGETS.
+ */
+char *
+ku_fgets (obuf, maxch, fd)
+char	*obuf;
+int	maxch;
+int	fd;
+{
+	register XCHAR	*ip;
+	register char	*op;
+	register int	n;
+	XCHAR	lbuf[SZ_LINE+1];
+	XINT	maxchars, status, chan;
+
+	maxchars = (maxch > SZ_LINE) ? SZ_LINE : maxch;
+	chan = fd;
+
+	ZGETTX (&chan, lbuf, &maxchars, &status);
+	if (status <= 0)
+	    return (NULL);
+	
+	for (ip=lbuf, op=obuf, n=status;  --n >= 0;  )
+	    *op++ = *ip++;
+	*op++ = EOS;
+
+	return (obuf);
+}
+
+
+/* KU_GPASSWD -- Read a line from the terminal in raw mode (no echo), e.g.,
+ * when reading a password.
+ */
+ku_gpasswd (prompt, passwd, maxch)
+char	*prompt;		/* user prompt string		*/
+char	*passwd;		/* receives password		*/
+int	maxch;
+{
+	XCHAR	text[SZ_LINE+1], ch;
+	XINT	mode=READ_WRITE, chan, status, nchars;
+	register char	*ip;
+	register XCHAR	*op;
+	register int	n;
+
+	/* Open terminal. */
+	strcpy ((char *)text, TTYNAME);
+	ZOPNTY (text, &mode, &chan);
+	if (chan < 0) {
+	    passwd[0] = EOS;
+	    return (ERR);
+	}
+
+	/* Write prompt string. */
+	for (ip=prompt, op=text, nchars=0;  (*op++ = *ip++) != EOS;  )
+	    nchars++;
+	ZPUTTY (&chan, text, &nchars, &status);
+	ZFLSTY (&chan, &status);
+
+	/* Read line in raw mode. */
+	nchars = 1;
+	for (n=0;  n < maxch;  n++) {
+	    ZGETTY (&chan, &text, &nchars, &status);
+	    ch = text[0];
+	    if (status <= 0 || ch == '\n' || ch == '\r')
+		break;
+	    passwd[n] = ch;
+	}
+	passwd[n] = EOS;
+
+	/* Echo the newline. */
+	ch = '\n';
+	ZPUTTY (&chan, &ch, &nchars, &status);
+
+	/* Disable raw mode. */
+	nchars = LEN_RAWCMD;
+	for (ip=RAWOFF, op=text, n=LEN_RAWCMD;  --n > 0 && (*op++ = *ip++);  )
+	    ;
+	ZPUTTY (&chan, text, &nchars, &status);
+	ZCLSTY (&chan, &status);
+
+	return (n);
+}
+
+
+/* KU_MKFNAME -- Make an OSFN, given a logical directory name (either "iraf"
+ * or "home"), a subdirectory name, and a filename.
+ */
+ku_mkfname (ldir, subdir, fname, osfn, maxch)
+char	*ldir;			/* logical directory name	*/
+char	*subdir;		/* subdirectory			*/
+char	*fname;			/* filename			*/
+char	*osfn;			/* receives pathname		*/
+int	maxch;
+{
+	PKCHAR	pkname[SZ_PATHNAME+1];
+	PKCHAR	temp[SZ_FNAME+1];
+	XINT	maxchars=SZ_PATHNAME, nchars;
+
+	if (ku_mapdir (ldir, (char *)pkname, SZ_PATHNAME) == ERR)
+	    return (ERR);
+
+	strcpy ((char *)temp, subdir);
+	ku_strupk (pkname, pkname, &maxchars);
+	ku_strupk (temp, temp, &maxchars);
+	ZFSUBD (pkname, &maxchars, temp, &nchars);
+	ku_strpak (pkname, pkname, &maxchars);
+
+	strcat ((char *)pkname, fname);
+	strncpy (osfn, (char *)pkname, maxch);
+	osfn[maxch-1] = EOS;
+
+	return (OK);
+}
+
+
+/* KU_ITOC -- Encode a simple positive integer in a decimal radix, returning
+ * a pointer to the encoded numeric string.
+ */
+char *
+ku_itoc (num)
+int	num;
+{
+	register int	dig, n;
+	register char	*op;
+	static	char buf[15];
+
+	op = &buf[15];
+	*--op = '\0';
+
+	for (n=num;  dig = n % 10;  n /= 10)
+	    *--op = dig + '0';
+
+	return (op);
+}
+
+
+/* KU_BCOPY -- Copy a byte array.
+ */
+ku_bcopy (a, b, nbytes)
+char	*a;			/* input byte array			*/
+char	*b;			/* output byte array			*/
+int	nbytes;			/* number of bytes to move		*/
+{
+	register char	*ip, *op;
+	register int	n = nbytes;
+
+	/* If the two arrays are the same return immediately.  If the move is
+	 * to the left then copy left to right, else copy right to left.
+	 */
+	if (a == b) {
+	    return;
+	} else if (b < a) {
+	    for (ip=a, op=b;  --n >= 0;  )
+		*op++ = *ip++;
+	} else {
+	    for (ip = &a[n], op = &b[n];  --n >=  0;  )
+		*--op = *--ip;
+	}
+}
+
+
+/* KU_SLEEP -- Suspend process execution.
+ */
+ku_sleep (nseconds)
+int	nseconds;
+{
+	int	mseconds = nseconds*1000;
+
+	ZWMSEC (&mseconds);
+}
+
+
+/* KU_ERROR -- [MACHDEP] Print an error message somewhere where the user can
+ * see it (but do not abort or interrupt execution).
+ */
+ku_error (message)
+char	*message;
+{
+	write (2, message, strlen(message));
+	write (2, "\n", 1);
+}
+
+
+/* KU_MAPDIR -- Return the OSFN of the named logical directory, which can
+ * be either "iraf" or "home".  The IRAF root directory is either given in
+ * the host system environment and returned by ZGTENV, or is defined as
+ * IRAF in <iraf.h>.  The user's login directory "home" is the host
+ * system login directory, not the IRAF login directory.  On a UNIX system
+ * the pathname of this directory is given in the UNIX file /etc/passwd.
+ * On other systems, e.g., VMS, the ZGTENV mechanism can be used to define
+ * the user's home directory.
+ */
+ku_mapdir (ldir, osfn, maxch)
+char	*ldir;			/* logical directory name	*/
+char	*osfn;			/* receives filename		*/
+int	maxch;
+{
+	PKCHAR	pkname[SZ_FNAME+1];
+	PKCHAR	valstr[SZ_PATHNAME+1];
+	XINT	maxchars=SZ_PATHNAME, status;
+
+	/* Look in the host environment first.
+	 */
+	strcpy ((char *)pkname, ldir);
+	ZGTENV (pkname, valstr, &maxchars, &status);
+
+	if (status > 0) {
+	    strncpy (osfn, (char *)valstr, maxch);
+	    osfn[maxch-1] = EOS;
+	    return (OK);
+	} else if (strncmp (ldir, "iraf", 4) == 0) {
+	    strncpy (osfn, IRAF, maxch);
+	    osfn[maxch-1] = EOS;
+	    return (OK);
+	} else if (strncmp (ldir, "home", 4) != 0) {
+	    osfn[0] = EOS;
+	    return (ERR);
+	}
+
+	/* If we get here the ldir is "home" and no definition was found in the
+	 * host environment.  Determine host login directory by some system
+	 * dependent means.  [MACHDEP].
+	 */
+	strcpy ((char *)pkname, "LOGNAME");
+	ZGTENV (pkname, valstr, &maxchars, &status);
+	if (status <= 0) {
+	    osfn[0] = EOS;
+	    return (ERR);
+	} else {
+	    strcpy (osfn, ":udd:");
+	    strcat (osfn, (char *)valstr);
+	    strcat (osfn, ":");
+	    return (OK);
+	}
+}
+
+
+/* STRPAK -- Pack an SPP character string into a C string, i.e., a sequence
+ * of characters stored one per byte, delimited by EOS='\0'.  The operation
+ * may be performed in place.  This version assumes that the host character
+ * set is ASCII and hence no lookup table reference to map character sets is
+ * needed.  If this is not the case, code must be added to convert to the host
+ * character set.
+ *
+ * N.B.: If sizeof(XCHAR)=1, XEOS=EOS, and the host character set is ASCII,
+ * and the operation is being performed in place, then this procedure should
+ * do nothing.
+ */
+ku_strpak (instr, outstr, maxch)
+XCHAR	*instr;
+PKCHAR	*outstr;
+XINT	*maxch;
+{
+	register XCHAR	*ip = instr;
+	register char	*op = (char *)outstr;
+	register int	  n = *maxch;
+
+	while ((*op++ = *ip++) != XEOS && --n >= 0)
+	    ;
+	*--op = EOS;
+}
+
+/* STRUPK -- Unpack a kernel (C style) string into an SPP string.  The unpacking * operation can be performed in place.  A kernel string consists of a sequence
+ * of host characters stored one character per byte, delimited by EOS='\0'.
+ * We assume here that the host character set is ASCII.  If this is not the
+ * case code must be added to convert from the host character set to ASCII in
+ * the unpacked string.
+ *
+ * N.B.: If sizeof(XCHAR)=1, XEOS=EOS, and the host character set is ASCII,
+ * and the operation is being performed in place, then this procedure should
+ * do nothing.
+ */
+ku_strupk (instr, outstr, maxch)
+PKCHAR	*instr;
+XCHAR	*outstr;
+XINT	*maxch;
+{
+	register char	*ip = (char *)instr;
+	register XCHAR	*op = outstr;
+	register int	  n;
+
+	/* Is is necessary to determine the length of the string in order to
+	 * be able to unpack the string in place, i.e., from right to left.
+	 */
+	n = strlen (ip);
+	n = (n < *maxch) ? n : *maxch;
+	op[n] = XEOS;
+
+	while (--n >= 0)
+	    op[n] = ip[n];
+}