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/*
* system.c
*
* Routines specific for non-MSDOS implementations of pgp.
*
* Modified 24-Jun-92 HAJK
* Adapt for VAX/VMS.
*
* Modified: 11-Nov-92 HAJK
* Add FDL Support Routines.
*
* Modified: 31-Jan-93 HAJK
* Misc. updates for terminal handling.
* Add VMS command stuff.
* Add fileparse routine.
*/
#include <stdio.h>
#include "exitpgp.h"
#include "system.h"
#include "usuals.h"
/*===========================================================================*/
/*
* UNIX
*/
#ifdef UNIX
/*
* Define USE_SELECT to use the select() system call to check if
* keyboard input is available. Define USE_NBIO to use non-blocking
* read(). If you don't define anything the FIONREAD ioctl() command
* will be used.
*
* Define NOTERMIO if you don't have the termios stuff
*/
#include <sys/types.h>
#include <fcntl.h>
#ifndef NOTERMIO
#ifndef SVR2
#include <termios.h>
#else
#include <termio.h>
#endif /* not SVR2 */
#else
#include <sgtty.h>
#endif
#ifdef USE_SELECT
#include <sys/time.h>
#ifdef _IBMR2
#include <sys/select.h>
#endif /* _IBMR2 */
#else
#ifndef USE_NBIO
#ifndef sun
#include <sys/ioctl.h> /* for FIONREAD */
#else /* including both ioctl.h and termios.h gives a lot of warnings on sun */
#include <sys/filio.h>
#endif /* sun */
#ifndef FIONREAD
#define FIONREAD TIOCINQ
#endif
#endif
#endif
#include <signal.h>
static void setsigs(void);
static void rmsigs(void);
static void sig1(int);
static void sig2(int);
void breakHandler(int);
static int ttyfd= -1;
#ifndef SVR2
static void (*savesig)(int);
#else
static int (*savesig)(int);
#endif
void ttycbreak(void);
void ttynorm(void);
#ifndef NEED_KBHIT
#undef USE_NBIO
#endif
#ifndef NOTERMIO
#ifndef SVR2
static struct termios itio, tio;
#else
static struct termio itio, tio;
#endif /* not SVR2 */
#else
static struct sgttyb isg, sg;
#endif
#ifdef USE_NBIO
static int kbuf= -1; /* buffer to store char read by kbhit() */
static int fflags;
#endif
static int gottio = 0;
void ttycbreak(void)
{
if (ttyfd == -1) {
if ((ttyfd = open("/dev/tty", O_RDWR)) < 0) {
fprintf(stderr, "cannot open tty, using stdin\n");
ttyfd = 0;
}
}
#ifndef NOTERMIO
#ifndef SVR2
if (tcgetattr(ttyfd, &tio) < 0)
#else
if (ioctl(ttyfd, TCGETA, &tio) < 0)
#endif /* not SVR2 */
{ fprintf (stderr, "\nUnable to get terminal characteristics: ");
perror("ioctl");
exitPGP(1);
}
itio = tio;
setsigs();
gottio = 1;
#ifdef USE_NBIO
tio.c_cc[VMIN] = 0;
#else
tio.c_cc[VMIN] = 1;
#endif
tio.c_cc[VTIME] = 0;
tio.c_lflag &= ~(ECHO|ICANON);
#ifndef SVR2
tcsetattr (ttyfd, TCSAFLUSH, &tio);
#else
ioctl(ttyfd, TCSETAF, &tio);
#endif /* not SVR2 */
#else
if (ioctl(ttyfd, TIOCGETP, &sg) < 0)
{ fprintf (stderr, "\nUnable to get terminal characteristics: ");
perror("ioctl");
exitPGP(1);
}
isg = sg;
setsigs();
gottio = 1;
#ifdef CBREAK
sg.sg_flags |= CBREAK;
#else
sg.sg_flags |= RAW;
#endif
sg.sg_flags &= ~ECHO;
ioctl(ttyfd, TIOCSETP, &sg);
#endif /* !NOTERMIO */
#ifdef USE_NBIO
#ifndef O_NDELAY
#define O_NDELAY O_NONBLOCK
#endif
if ((fflags = fcntl(ttyfd, F_GETFL, 0)) != -1)
fcntl(ttyfd, F_SETFL, fflags|O_NDELAY);
#endif
}
void ttynorm(void)
{ gottio = 0;
#ifdef USE_NBIO
if (fcntl(ttyfd, F_SETFL, fflags) == -1)
perror("fcntl");
#endif
#ifndef NOTERMIO
#ifndef SVR2
tcsetattr (ttyfd, TCSAFLUSH, &itio);
#else
ioctl(ttyfd, TCSETAF, &itio);
#endif /* not SVR2 */
#else
ioctl(ttyfd, TIOCSETP, &isg);
#endif
rmsigs();
}
static void sig1 (int sig)
{
#ifndef NOTERMIO
#ifndef SVR2
tcsetattr (ttyfd, TCSANOW, &itio);
#else
ioctl(ttyfd, TCSETAW, &itio);
#endif /* not SVR2 */
#else
ioctl(ttyfd, TIOCSETP, &isg);
#endif
signal (sig, SIG_DFL);
if (sig == SIGINT)
breakHandler(SIGINT);
kill (getpid(), sig);
}
static void sig2 (int sig)
{ if (gottio)
ttycbreak();
else
setsigs();
}
static void setsigs(void)
{ savesig = signal (SIGINT, sig1);
#ifdef SIGTSTP
signal (SIGCONT, sig2);
signal (SIGTSTP, sig1);
#endif
}
static void rmsigs(void)
{ signal (SIGINT, savesig);
#ifdef SIGTSTP
signal (SIGCONT, SIG_DFL);
signal (SIGTSTP, SIG_DFL);
#endif
}
#ifdef NEED_KBHIT
#ifndef CRUDE
int kbhit(void)
/* Return TRUE if there is a key to be read */
{
#ifdef USE_SELECT /* use select() system call */
struct timeval t;
fd_set n;
int r;
timerclear(&t);
FD_ZERO(&n);
FD_SET(ttyfd, &n);
r = select(32, &n, NULL, NULL, &t);
if (r == -1) {
perror("select");
exitPGP(1);
}
return r > 0;
#else
#ifdef USE_NBIO /* use non-blocking read() */
unsigned char ch;
if (kbuf >= 0)
return(1);
if (read(ttyfd, &ch, 1) == 1) {
kbuf = ch;
return(1);
}
return(0);
#else
long lf;
if (ioctl(ttyfd, FIONREAD, &lf) == -1) {
perror("ioctl: FIONREAD");
exitPGP(1);
}
return(lf);
#endif
#endif
}
#endif /* !CRUDE */
#endif
int getch(void)
{
char c;
#ifdef USE_NBIO
while (!kbhit()); /* kbhit() does the reading */
c = kbuf;
kbuf = -1;
#else
read(ttyfd, &c, 1);
#endif
return(c);
}
#if defined(_BSD) && !defined(__STDC__)
VOID *memset(s, c, n)
VOID *s;
register int c, n;
{
register char *p = s;
++n;
while (--n)
*p++ = c;
return(s);
}
int memcmp(s1, s2, n)
register unsigned char *s1, *s2;
register int n;
{
if (!n)
return(0);
while (--n && *s1 == *s2) {
++s1;
++s2;
}
return(*s1 - *s2);
}
VOID *memcpy(s1, s2, n)
register char *s1, *s2;
register int n;
{
char *p = s1;
++n;
while (--n)
*s1++ = *s2++;
return(p);
}
#endif /* _BSD */
#if (defined(MACH) || defined(SVR2) || defined(_BSD)) && !defined(NEXT)
int remove(name)
char *name;
{
return unlink(name);
}
#endif
#ifdef SVR2
int rename(old, new)
register char *old, *new;
{
unlink(new);
if (link(old, new) < 0)
return -1;
if (unlink(old) < 0) {
unlink(new);
return -1;
}
return 0;
}
#endif /* SVR2 */
/* not all unices have clock() */
long
Clock() /* not a replacement for clock(), just for random number generation */
{
#if defined(_BSD) || defined(sun) || defined(MACH) || defined(linux)
#include <sys/time.h>
#include <sys/resource.h>
struct rusage ru;
getrusage(RUSAGE_SELF, &ru);
return ru.ru_utime.tv_sec + ru.ru_utime.tv_usec +
ru.ru_stime.tv_sec + ru.ru_stime.tv_usec +
ru.ru_minflt + ru.ru_majflt +
ru.ru_inblock + ru.ru_oublock +
ru.ru_maxrss + ru.ru_nvcsw + ru.ru_nivcsw;
#else /* no getrusage() */
#include <sys/times.h>
struct tms tms;
times(&tms);
return(tms.tms_utime + tms.tms_stime);
#endif
}
#endif /* UNIX */
/*===========================================================================*/
/*
* VMS
*/
#ifdef VMS /* kbhit()/getch() equivalent */
/*
* This code defines an equivalent version of kbhit() and getch() for
* use under VAX/VMS, together with an exit handler to reset terminal
* characteristics.
*
* This code assumes that kbhit() has been invoked to test that there
* are characters in the typeahead buffer before getch() is invoked to
* get the answer.
*/
#include <signal.h>
#include <string.h>
#include <file.h>
#include <ctype.h>
#include "pgp.h"
#include "mpilib.h"
#include "mpiio.h"
#include "fileio.h"
extern byte textbuf[DISKBUFSIZE]; /* Defined in FILEIO.C */
/*
** VMS Private Macros
*/
#include <descrip.h>
#include <devdef>
#include <iodef.h>
#include <ttdef.h>
#include <tt2def.h>
#include <dcdef.h>
#include <climsgdef.h>
#include <rms.h>
#include <hlpdef.h>
#define MAX_CMDSIZ 256 /* Maximum command size */
#define MAX_FILENM 255 /* Mamimum file name size */
#define FDL$M_FDL_STRING 2 /* Use string for fdl text */
#define FDLSIZE 4096 /* Maximum possible file size */
#ifdef _USEDCL_
/*
* Declare some external procedure prototypes (saves me confusion!)
*/
extern int lib$get_input(
struct dsc$descriptor *resultant,
struct dsc$descriptor *prompt,
unsigned short *resultant_length);
extern int lib$put_output(
struct dsc$descriptor *output);
extern int lib$sig_to_ret();
/*
** The CLI routines are documented in the system routines manual.
*/
extern int cli$dcl_parse(
struct dsc$descriptor *command,
char cmd_table[],
int (*get_command)(
struct dsc$descriptor *resultant,
struct dsc$descriptor *prompt,
unsigned short *resultant_length),
int (*get_parameter)(
struct dsc$descriptor *resultant,
struct dsc$descriptor *prompt,
unsigned short *resultant_length),
struct dsc$descriptor *prompt);
extern int cli$present( struct dsc$descriptor *object);
extern int cli$_get_value(
struct dsc$descriptor *object,
struct dsc$decsriptor *value,
unsigned short *value_len);
/*
* Static Data
*/
static $DESCRIPTOR (cmdprmt_d, "DROPSAFE> "); /* Prompt string */
#endif /* _USEDCL_ */
static volatile short _kbhitChan_ = 0;
static volatile struct IOSB {
unsigned short sts;
unsigned short byteCount;
unsigned short terminator;
unsigned short terminatorSize;
} iosb;
static $DESCRIPTOR (kbdev_desc, "SYS$COMMAND:");
static volatile struct {
char Class;
char Type;
unsigned short BufferSize;
unsigned int Mode;
int ExtChar;
} CharBuf, OldCharBuf;
static $DESCRIPTOR (out_file_descr, "SYS$DISK:[]"); /* Default Output File Descr */
static int flags = FDL$M_FDL_STRING;
/*
* **-kbhit_handler-This exit handler restores the terminal characteristics
*
* Description:
*
* This procedure is invoked to return the the terminal to normality (depends
* on what you think is normal!). Anyway, it gets called to restore
* characteristics either through ttynorm or via an exit handler.
*/
static void kbhit_handler(int *sts)
{
ttynorm();
(void) sys$dassgn (
_kbhitChan_);
_kbhitChan_ = 0;
}
/*
* Data Structures For Linking Up Exit Handler
*/
unsigned int exsts;
static struct {
int link;
VOID *rtn;
int argcnt;
int *stsaddr;
} exhblk = { 0, &(kbhit_handler), 1, &(exsts)};
/*
* **-kbhit_Getchn-Get Channel
*
* Functional Description:
*
* Private routine to get a terminal channel and save the terminal
* characteristics.
*
* Arguments:
*
* None.
*
* Returns:
*
* If 0, channel already assigned. If odd, then assign was successful
* otherwise returns VMS error status.
*
* Implicit Inputs:
*
* _kbhitChan_ Channel assigned to the terminal (if any).
*
* Implicit Outputs:
*
* OldCharBuf Initial terminal characteristics.
* _kbhitChan_ Channel assigned to the terminal.
*
* Side Effects:
*
* Establishes an exit handler to restore characteristics and deassign
* terminal channel.
*/
static int kbhit_Getchn()
{
int sts = 0;
if (_kbhitChan_ == 0) {
if ((sts = sys$assign (
&kbdev_desc,
&_kbhitChan_,
0,
0)) & 1) {
if ((sts = sys$qiow (
0,
_kbhitChan_,
IO$_SENSEMODE,
&iosb,
0,
0,
&OldCharBuf,
12,
0,
0,
0,
0)) & 01) sts = iosb.sts;
if (sts & 01) {
if (!(OldCharBuf.Class & DC$_TERM)) {
fprintf(stderr,"\nNot running on a terminal");
exitPGP(1);
}
(void) sys$dclexh (&exhblk);
}
}
}
return(sts);
}
/*
* **-ttynorm-Restore initial terminal characteristics
*
* Functional Description:
*
* This procedure is invoked to restore the initial terminal characteristics.
*/
void ttynorm()
/*
* Arguments:
*
* None.
*
* Implicit Inputs:
*
* OldCharBuf Initial terminal characteristics.
* _kbhitChan_ Channel assigned to the terminal.
*
* Implicit Outputs:
*
* None.
*/
{
int sts;
if (_kbhitChan_ != 0) {
CharBuf.Mode = OldCharBuf.Mode;
CharBuf.ExtChar = OldCharBuf.ExtChar;
/*
CharBuf.Mode &= ~TT$M_NOECHO;
CharBuf.ExtChar &= ~TT2$M_PASTHRU;
*/
if ((sts = sys$qiow (
0,
_kbhitChan_,
IO$_SETMODE,
&iosb,
0,
0,
&OldCharBuf,
12,
0,
0,
0,
0)) & 01) sts = iosb.sts;
if (!(sts & 01)) {
fprintf(stderr,"\nFailed to reset terminal characteristics!");
(void) lib$signal(sts);
}
}
return;
}
/*
* **-kbhit-Find out if a key has been pressed
*
* Description:
*
* Make the terminal noecho and sense the characters coming in by looking at
* the typeahead count. Note that the character remains in the typeahead buffer
* untill either read, or that the user types a Control-X when not in 'passall'
* mode.
*/
int kbhit()
/*
* Arguments:
*
* None.
*
* Returns:
*
* TRUE if there is a character in the typeahead buffer.
* FALSE if there is no character in the typeahead buffer.
*/
{
int sts;
struct {
unsigned short TypAhdCnt;
char FirstChar;
char Reserved[5];
} TypCharBuf;
/*
** Get typeahead count
*/
if ((sts = sys$qiow (
0,
_kbhitChan_,
IO$_SENSEMODE | IO$M_TYPEAHDCNT,
&iosb,
0,
0,
&TypCharBuf,
8,
0,
0,
0,
0)) & 01) sts = iosb.sts;
if (sts & 01) return(TypCharBuf.TypAhdCnt>0);
(void) lib$signal(sts);
exitPGP(1);
}
static int NoTerm[2] = { 0, 0}; /* TT Terminator Mask (Nothing) */
/*
* **-getch-Get a character and return it
*
* Description:
*
* Get a character from the keyboard and return it. Unlike Unix, the character
* will be explicitly echoed unless ttycbreak() has been called first. If the
* character is in the typeahead, that will be read first.
*/
int getch()
/*
* Arguments:
*
* None.
*
* Returns:
*
* Character Read.
*/
{
unsigned int sts;
volatile char CharBuf;
if (((sts = kbhit_Getchn()) & 01) || sts == 0) {
if ((sts = sys$qiow (
0,
_kbhitChan_,
IO$_READVBLK,
&iosb,
0,
0,
&CharBuf,
1,
0,
&NoTerm,
0,
0)) & 01) sts = iosb.sts;
}
if (sts & 01) return ((int) CharBuf);
fprintf(stderr,"\nFailed to get character");
(void) lib$signal(sts);
}
/*
* **-putch-Put Character To 'Console' Device
*
* This procedure is a companion to getch, outputing a character to the
* terminal with a minimum of fuss (no VAXCRTLK, no RMS!). This routine
* simply gets a channel (if there isn't one already and uses QIO to
* output.
*
*/
int putch(int chr)
/*
* Arguments:
* chr Character to output.
*
* Returns:
*
* Status return from Getchn and qio.
*
* Side Effects
*
* May assign a channel to the terminal.
*/
{
unsigned int sts;
if (((sts = kbhit_Getchn()) & 01) || sts == 0) {
if ((sts = sys$qiow (
0,
_kbhitChan_,
IO$_WRITEVBLK,
&iosb,
0,
0,
&chr,
1,
0,
0,
0,
0)) & 01) sts = iosb.sts;
}
if (sts & 01) return (sts);
fprintf(stderr,"\nFailed to put character");
(void) lib$signal(sts);
}
/*
* **-ttycbreak-Set Unix-like Cbreak mode
*
* Functional Description:
*
* This code must be invoked to produce the Unix-like cbreak operation which
* disables echo, allows control character input.
*/
void ttycbreak ()
/*
* Arguments:
*
* None.
*
* Returns:
*
* None.
*
* Side Effects
*
* May assign a channel to the terminal.
*/
{
struct {
unsigned short TypAhdCnt;
char FirstChar;
char Reserved[5];
} TypCharBuf;
char buf[80];
int sts;
if (((sts = kbhit_Getchn()) & 01) || sts == 0) {
/*
* Flush any typeahead before we change characteristics
*/
if ((sts = sys$qiow (
0,
_kbhitChan_,
IO$_SENSEMODE | IO$M_TYPEAHDCNT,
&iosb,
0,
0,
&TypCharBuf,
8,
0,
0,
0,
0)) & 01) sts = iosb.sts;
if (sts) {
if (TypCharBuf.TypAhdCnt>0) {
if ((sts = sys$qiow (
0,
_kbhitChan_,
IO$_READVBLK | IO$M_NOECHO | IO$M_TIMED,
&iosb,
0,
0,
&buf,
(TypCharBuf.TypAhdCnt >= 80 ? 80 : TypCharBuf.TypAhdCnt),
1,
&NoTerm,
0,
0)) & 01) sts = iosb.sts;
if (sts)
TypCharBuf.TypAhdCnt -= iosb.byteCount;
}
}
if (!(sts & 01)) TypCharBuf.TypAhdCnt = 0;
/*
* Modify characteristics
*/
CharBuf = OldCharBuf;
CharBuf.Mode = (OldCharBuf.Mode | TT$M_NOECHO) & ~TT$M_NOTYPEAHD;
CharBuf.ExtChar = OldCharBuf.ExtChar | TT2$M_PASTHRU;
if ((sts = sys$qiow (
0,
_kbhitChan_,
IO$_SETMODE,
&iosb,
0,
0,
&CharBuf,
12,
0,
0,
0,
0)) & 01) sts = iosb.sts;
if (!(sts & 01)) {
fprintf(stderr,"\nttybreak()- Failed to set terminal characteristics!");
(void) lib$signal(sts);
exitPGP(1);
}
}
}
#ifdef _USEDCL_
/*
* **-vms_getcmd-Get VMS Style Foreign Command
*
* Functional Description:
*
* Get command from VAX/VMS foreign command line interface and parse
* according to DCL rules. If the command line is ok, it can then be
* parsed according to the rules in the DCL command language table.
*
*/
int vms_GetCmd( char *cmdtbl)
/*
* Arguments:
*
* cmdtbl Pointer to command table to parse.
*
* Returns:
*
* ...TBS...
*
* Implicit Inputs:
*
* Command language table defined in DROPDCL.CLD
*/
{
int sts;
char cmdbuf[MAX_CMDSIZ];
unsigned short cmdsiz;
struct dsc$descriptor cmdbuf_d = {0,0,0,0};
struct dsc$descriptor infile_d = {0,0,0,0};
char filenm[MAX_FILENM];
unsigned short filenmsiz;
unsigned short verb_size;
/*
** DCL Parse Expects A Command Verb Prefixing The Argumnents
** fake it!
*/
verb_size = cmdprmt_d.dsc$w_length - 2; /* Loose '> ' characters */
cmdbuf_d.dsc$w_length = MAX_CMDSIZ-verb_size-1;
cmdbuf_d.dsc$a_pointer = strncpy(cmdbuf,cmdprmt_d.dsc$a_pointer,verb_size) +
verb_size+1;
cmdbuf[verb_size++]=' ';
if ((sts = lib$get_foreign ( /* Recover command line from DCL */
&cmdbuf_d,
0,
&cmdsiz,
0)) & 01) {
cmdbuf_d.dsc$a_pointer = cmdbuf;
cmdbuf_d.dsc$w_length = cmdsiz + verb_size;
VAXC$ESTABLISH(lib$sig_to_ret); /* Force unhandled exceptions to return */
sts = cli$dcl_parse( /* Parse Command Line */
&cmdbuf_d,
cmdtbl,
lib$get_input,
lib$get_input,
&cmdprmt_d);
}
return(sts);
}
/*
* **-vms_TstOpt-Test for command qualifier present
*
* Functional Description:
*
* This procedure is invoked to test whether an option is present. It is
* really just a jacket routine for the system routine CLI$PRESENT
* converting the argument and result into 'C' speak.
*
*/
vms_TstOpt(char opt)
/*
* Arguments:
*
* opt Character label of qualifier to test for.
*
* Returns:
*
* +1 Option present.
* 0 Option absent.
* -1 Option negated.
*
* Implicit Inputs:
*
* Uses DCL command line context established by vms_GetOpt.
*/
{
int sts;
char buf;
struct dsc$descriptor option_d = { 1, 0, 0, &buf};
buf = _toupper(opt);
VAXC$ESTABLISH(lib$sig_to_ret); /* Force unhandled exceptions to return */
switch (sts=cli$present(&option_d))
{
case CLI$_PRESENT :
return(1);
case CLI$_ABSENT:
return(0);
case CLI$_NEGATED:
return(-1);
default:
return(0);
}
}
/*
* **-vms_GetVal-Get Qualifier Value.
*
* Functional Description:
*
* This procedure is invoked to return the value associated with a
* qualifier that exists (See TstOpt).
*/
vms_GetVal( char opt, char *resval, unsigned short maxsiz)
/*
* Arguments:
*
* opt Character label of qualifier to test for.
* resval Pointer to resulting value string.
* maxsiz Maximum size of string.
*
* Returns:
*
* ...TBS...
*
* Implicit Inputs:
*
* Uses DCL command line context established by vms_GetOpt.
*/
{
int sts;
char buf;
struct dsc$descriptor option_d = { 1, 0, 0, &buf};
struct dsc$descriptor value_d = {maxsiz-1, 0, 0, resval };
unsigned short valsiz;
VAXC$ESTABLISH(lib$sig_to_ret); /* Force unhandled exceptions to return */
buf = _toupper(opt);
if ((sts = cli$get_value(
&option_d,
&value_d,
&valsiz)) & 01) resval[valsiz] = '\0';
return(sts);
}
/*
* **-vms_GetArg-Get Argument Value.
*
* Functional Description:
*
* This procedure is invoked to return the value associated with an
* argument.
*/
vms_GetArg( unsigned short arg, char *resval, unsigned short maxsiz)
/*
* Arguments:
*
* arg Argument Number (1-9)
* resval Pointer to resulting value string.
* maxsiz Maximum size of string.
*
* Returns:
*
* ...TBS...
*
* Implicit Inputs:
*
* Uses DCL command line context established by vms_GetOpt.
*/
{
int sts;
char buf[2] = "P";
struct dsc$descriptor option_d = { 2, 0, 0, buf};
struct dsc$descriptor value_d = {maxsiz-1, 0, 0, resval };
unsigned short valsiz;
VAXC$ESTABLISH(lib$sig_to_ret); /* Force unhandled exceptions to return */
buf[1] = arg + '0';
if ((sts = cli$present(&option_d)) & 01) {
if ((sts = cli$get_value(
&option_d,
&value_d,
&valsiz)) & 01) resval[valsiz] = '\0';
} else return(0);
return(sts);
}
/*
* **-do_help-Invoke VMS Help Processor
*
* Functional Description:
*
* This procedure is invoked to display a suitable help message to the caller
* using the standard VMS help library.
*
*/
do_help(char *helptext, char *helplib)
/*
* Arguments:
*
* helptext Text of help request.
* helplib Help library.
*
* Returns:
*
* As for kbhit_Getchn and lbr$output_help.
*
* Side Effects:
*
* A channel may be opened to the terminal. A library is opened.
*/
{
int sts;
int helpflags;
struct dsc$descriptor helptext_d = { strlen(helptext), 0, 0, helptext};
struct dsc$descriptor helplib_d = { strlen(helplib), 0, 0, helplib};
VAXC$ESTABLISH(lib$sig_to_ret); /* Force unhandled exceptions to return */
if (((sts = kbhit_Getchn()) & 01) || sts == 0) {
helpflags = HLP$M_PROMPT|HLP$M_SYSTEM|HLP$M_GROUP|HLP$M_PROCESS;
sts = lbr$output_help(
lib$put_output,
&OldCharBuf.BufferSize,
&helptext_d,
&helplib_d,
&helpflags,
lib$get_input);
}
return(sts);
}
#endif /* _USEDCL_ */
unsigned long vms_clock_bits[2]; /* VMS Hardware Clock */
const long vms_ticks_per_update = 100000L; /* Clock update int. */
/*
* FDL Stuff For Getting & Setting File Characteristics
* This code was derived (loosely!) from the module LZVIO.C in the public
* domain LZW compress routine as found on the DECUS VAX SIG tapes (no author
* given, so no credits!)
*/
/*
* **-fdl_generate-Generate An FDL
*
* Description:
*
* This procedure takes the name of an existing file as input and creates
* an fdl. The FDL is retuned by pointer and length. The FDL space should be
* released after use with a call to free();
*/
int fdl_generate(char *in_file, char **fdl, short *len)
/*
* Arguments:
*
* in_file char* Filename of file to examine (Zero terminated).
*
* fdl char* Pointer to FDL that was created.
*
* len short Length of FDL created.
*
* Status Returns:
*
* VMS style. lower bit set means success.
*/
{
struct dsc$descriptor fdl_descr = { 0,
DSC$K_DTYPE_T,
DSC$K_CLASS_D,
0};
struct FAB fab, *fab_addr;
struct RAB rab, *rab_addr;
struct NAM nam;
struct XABFHC xab;
int sts;
int badblk;
/*
* Build FDL Descriptor
*/
if (!(sts = str$get1_dx(&FDLSIZE,&fdl_descr)) & 01) return(0);
/*
* Build RMS Data Structures
*/
fab = cc$rms_fab;
fab_addr = &fab;
nam = cc$rms_nam;
rab = cc$rms_rab;
rab_addr = &rab;
xab = cc$rms_xabfhc;
fab.fab$l_nam = &nam;
fab.fab$l_xab = &xab;
fab.fab$l_fna = in_file;
fab.fab$b_fns = strlen(in_file);
rab.rab$l_fab = &fab;
fab.fab$b_fac = FAB$M_GET | FAB$M_BIO; /* This open block mode only */
/*
* Attempt to Open File
*/
if (!((sts = sys$open(&fab)) & 01)) {
if (verbose) {
fprintf(stderr,"\n(SYSTEM) Failed to $OPEN %s\n",in_file);
(void) lib$signal(fab.fab$l_sts,fab.fab$l_stv);
}
return(sts);
}
if (fab.fab$l_dev & DEV$M_REC) {
fprintf(stderr,"\n(SYSTEM) Attempt to read from output only device\n");
sts = 0;
} else {
rab.rab$l_rop = RAB$M_BIO;
if (!((sts = sys$connect(&rab)) & 01)) {
if (verbose) {
fprintf(stderr,"\n(SYSTEM) Failed to $CONNECT %s\n",in_file);
(void) lib$signal(fab.fab$l_sts,fab.fab$l_stv);
}
} else {
if (!((sts = fdl$generate(
&flags,
&fab_addr,
&rab_addr,
NULL,NULL,
&fdl_descr,
&badblk,
len)) & 01)) {
if (verbose)
fprintf(stderr,"\n(SYSTEM) Failed to generate FDL\n",in_file);
free(fdl);
} else {
if (!(*fdl = malloc(*len))) return(0);
memcpy(*fdl,fdl_descr.dsc$a_pointer,*len);
}
(void) str$free1_dx(&fdl_descr);
}
sys$close(&fab);
}
return(sts);
}
/*
* **-fdl_close-Closes files created by fdl_generate
*
* Description:
*
* This procedure is invoked to close the file and release the data structures
* allocated by fdl$parse.
*/
void fdl_close(void* rab)
/*
* Arguments:
*
* rab VOID * Pointer to RAB (voided to avoid problems for caller).
*
* Returns:
*
* None.
*/
{
struct FAB *fab;
fab = ((struct RAB *) rab)->rab$l_fab;
if (fab) { /* Close file if not already closed */
if (fab->fab$w_ifi) sys$close(fab);
}
fdl$release( NULL, &rab);
}
/*
* **-fdl_create-Create A File Using the recorded FDL (hope we get it right!)
*
* Description:
*
* This procedure accepts an FDL and uses it create a file. Unfortunately
* there is no way we can easily patch into the back of the VAX C I/O
* subsystem.
*/
VOID * fdl_create( char *fdl, short len, char *outfile, char *preserved_name)
/*
* Arguments:
*
* fdl char* FDL string descriptor.
*
* len short Returned string length.
*
* outfile char* Output filename.
*
* preserved_name char* Name from FDL.
*
* Returns:
*
* 0 in case of error, or otherwise the RAB pointer.
*/
{
VOID *sts;
int sts2;
struct FAB *fab;
struct RAB *rab;
struct NAM nam;
int badblk;
char *resnam;
struct dsc$descriptor fdl_descr = {
len,
DSC$K_DTYPE_T,
DSC$K_CLASS_S,
fdl
};
sts = NULL;
/*
* Initialize RMS NAM Block
*/
nam = cc$rms_nam;
nam.nam$b_rss = NAM$C_MAXRSSLCL;
nam.nam$b_ess = NAM$C_MAXRSSLCL;
if (!(resnam = nam.nam$l_esa = malloc(NAM$C_MAXRSSLCL+1))) {
fprintf(stderr,"\n(FDL_CREATE) Out of memory!\n");
return(NULL);
}
/*
* Parse FDL
*/
if (!((sts2 = fdl$parse( &fdl_descr,
&fab,
&rab,
&flags)) & 01)) {
fprintf(stderr,"\nCreating (fdl$parse)\n");
(void) lib$signal(sts2);
} else {
/*
* Extract & Return Name of FDL Supplied Filename
*/
memcpy (preserved_name,fab->fab$l_fna,fab->fab$b_fns);
preserved_name[fab->fab$b_fns] = '\0';
/*
* Set Name Of Temporary File
*/
fab->fab$l_fna = outfile;
fab->fab$b_fns = strlen(outfile);
/*
* Connect NAM Block
*/
fab->fab$l_nam = &nam;
fab->fab$l_fop |= FAB$M_NAM | FAB$M_CIF;
fab->fab$b_fac |= FAB$M_BIO | FAB$M_PUT;
/*
* Create File
*/
if (!(sys$create(fab) & 01)) {
fprintf(stderr,"\nCreating (RMS)\n");
(void) lib$signal(fab->fab$l_sts,fab->fab$l_stv);
fdl_close(rab);
} else {
if (verbose) {
resnam[nam.nam$b_esl+1] = '\0';
fprintf(stderr,"\nCreated %s successfully\n",resnam);
}
rab->rab$l_rop = RAB$M_BIO;
if (!(sys$connect(rab) & 01)) {
fprintf(stderr,"\nConnecting (RMS)\n");
(void) lib$signal(rab->rab$l_sts,rab->rab$l_stv);
fdl_close(rab);
} else sts = rab;
}
fab->fab$l_nam = 0; /* I allocated NAM block, so I must deallocate it! */
}
free(resnam);
return(sts);
}
/*
* **-fdl_copyfile2bin-Copies the input file to a 'binary' output file
*
* Description:
*
* This procedure is invoked to copy from an opened file f to a file opened
* directly through RMS. This allows us to make a block copy into one of the
* many esoteric RMS file types thus preserving characteristics without blowing
* up the C RTL. This code is based directly on copyfile from FILEIO.C.
*
* Calling Sequence:
*/
int fdl_copyfile2bin( FILE *f, VOID *rab, word32 longcount)
/*
* Arguments:
*
* f FILE* Pointer to input file
*
* rab RAB* Pointer to output file RAB
*
* longcount word32 Size of file
*
* Returns:
*
* 0 If we were successful.
* -1 We had an error on the input file (VAXCRTL).
* +1 We had an error on the output file (direct RMS).
*/
{
int status = 0;
word32 count;
((struct RAB *) rab)->rab$l_rbf = &textbuf;
((struct RAB *) rab)->rab$l_bkt = 0;
do { /* Read and write longcount bytes */
if (longcount < (word32) DISKBUFSIZE)
count = longcount;
else
count = DISKBUFSIZE;
count = fread(textbuf,1,count,f);
if (count > 0) {
/*
* No byte order conversion required, source and target system are both VMS so have
* the same byte ordering.
*/
((struct RAB *) rab)->rab$w_rsz = (unsigned short) count;
if (!(sys$write (
rab,
NULL,
NULL) & 01)) {
lib$signal(((struct RAB *) rab)->rab$l_sts,((struct RAB *) rab)->rab$l_stv);
status = 1;
break;
}
longcount -= count;
}
} while (count==DISKBUFSIZE);
burn(textbuf);
return(status);
}
/*
* **-vms_fileparse-Parse A VMS File Specification
*
* Functional Description:
*
* This procedure is invoked to parse a VMS file specification using default
* and related specifications to fill in any missing components. This works a
* little like DCL's F$PARSE function with the syntax check only specified
* (that is we don't check the device or the directory). The related file
* spec is really for when we want to use the name of an input file (w/o the
* directory) to supply the name of an output file.
*
* Note that we correctly handle the situation where the output buffer overlays
* the input filespec by testing for the case and then handling it by copying
* the primary input specification to a temporary buffer before parsing.
*/
int vms_fileparse( char *outbuf, char *filespec, char *defspec, char *relspec)
/*
* Arguments:
*
* outbuf Returned file specification.
* filespec Primary file specification (optional).
* defspec Default file specification (optional).
* relspec Related file specification (optional).
*
* Returns:
*
* As for SYS$PARSE.
*
* Implicit Inputs:
*
* None.
*
* Implicit Outputs:
*
* None.
*
* Side Effects:
*
* ...TBS...
*/
{
struct FAB fab = cc$rms_fab;
struct NAM nam = cc$rms_nam;
struct NAM rlnam = cc$rms_nam;
int sts = 1;
int len;
char tmpbuf[NAM$C_MAXRSSLCL];
char expfnam2[NAM$C_MAXRSSLCL];
if (outbuf != NULL) {
outbuf[0] = '\0';
fab.fab$l_fop != FAB$M_NAM; /* Enable RMS NAM block processing */
nam.nam$b_nop |= NAM$M_PWD | NAM$M_SYNCHK;
/*
** Handle Related Spec (If reqd).
*/
if (relspec != NULL) {
if ((len = strlen(relspec)) > 0) {
fab.fab$l_nam = &rlnam;
fab.fab$b_fns = len;
fab.fab$l_fna = relspec;
rlnam.nam$b_ess = NAM$C_MAXRSSLCL;
rlnam.nam$l_esa = expfnam2;
rlnam.nam$b_nop |= NAM$M_PWD | NAM$M_SYNCHK;
if ((sts = sys$parse (
&fab,
0,
0)) & 01) {
rlnam.nam$l_rsa = rlnam.nam$l_esa;
rlnam.nam$b_rsl = rlnam.nam$b_esl;
nam.nam$l_rlf = &rlnam;
fab.fab$l_fop |= FAB$M_OFP;
}
}
}
if (sts) {
fab.fab$l_nam = &nam;
nam.nam$l_esa = outbuf;
nam.nam$b_ess = NAM$C_MAXRSSLCL;
/*
** Process Default Specification:
*/
if (defspec != NULL) {
if ((len = strlen(defspec)) > 0) {
fab.fab$l_dna = defspec;
fab.fab$b_dns = len;
}
}
/*
** Process Main File Specification:
*/
fab.fab$l_fna = NULL;
fab.fab$b_fns = 0;
if (filespec != NULL) {
if ((len = strlen(filespec)) > 0) {
fab.fab$b_fns = len;
if (filespec == outbuf)
fab.fab$l_fna = memcpy(tmpbuf,filespec,len);
else
fab.fab$l_fna = filespec;
}
}
if ((sts = sys$parse(
&fab,
0,
0)) && 01) outbuf[nam.nam$b_esl] = '\0';
}
}
return (sts);
}
#endif /* VMS */
/*========================================================================*/
/*
* AMIGA
*/
#ifdef AMIGA /* Amiga-specific stuff */
#include <exec/types.h>
#include <exec/memory.h>
#include <exec/ports.h>
#include <libraries/dosextens.h>
#ifdef LATTICE
#include <proto/exec.h>
#include <proto/dos.h>
#endif /* LATTICE */
extern FILE *pgpout;
extern int aecho;
/* amiga version of getch()
Cor Bosman , jul-22-92
*/
sendpacket(struct MsgPort *rec,LONG action,LONG arg1)
{
struct StandardPacket *pkt;
struct msgPort *rp;
LONG res1 = 0L;
if (rp = (struct MsgPort *)CreatePort(NULL,0L)) {
if (pkt = (struct StandardPacket *)\
AllocMem(sizeof(struct StandardPacket),MEMF_PUBLIC|MEMF_CLEAR)) {
pkt->sp_Msg.mn_Node.ln_Name = (BYTE *)&pkt->sp_Pkt;
pkt->sp_Pkt.dp_Link = &pkt->sp_Msg;
pkt->sp_Pkt.dp_Port = rp;
pkt->sp_Pkt.dp_Type = action;
pkt->sp_Pkt.dp_Arg1 = arg1;
PutMsg(rec,&pkt->sp_Msg);
WaitPort(rp);
GetMsg(rp);
res1 = pkt->sp_Pkt.dp_Res1;
FreeMem((UBYTE*)pkt,sizeof(struct StandardPacket));
}
DeletePort(rp);
}
return(res1);
}
/* ttycbreak for amiga.
* Cor Bosman , jul-30-92
*/
void ttycbreak()
{
BPTR in,out;
char buf[128];
struct MsgPort *ch;
in=Input();
out=Output();
ch = ((struct FileHandle *)BADDR(in))->fh_Type;
sendpacket(ch,ACTION_SCREEN_MODE,-1L);
}
/* ttynorm for amiga
* Cor Bosman , jul-30-92
*/
void ttynorm()
{
BPTR in,out;
char buf[128];
struct MsgPort *ch;
in=Input();
out=Output();
ch = ((struct FileHandle *)BADDR(in))->fh_Type;
sendpacket(ch,ACTION_SCREEN_MODE,0L);
}
char getch(void)
{
char buf[128];
BPTR in,out;
in = Input();
out = Output();
Read(in,buf,1);
if (aecho)
Write(out, buf, 1);
return(buf[0]);
}
/* kbhit() function for amiga.
* Cor Bosman , jul-30-92
*/
int kbhit()
{
if(WaitForChar(Input(), 1)) return 1;
return 0;
}
#ifdef LATTICE
/*
* Lattice-C ^C-Handler
*/
int CXBRK()
{
BPTR in,out;
struct MsgPort *ch;
in=Input();
out=Output();
/* it might happen we catch a ^C while in cbreak mode.
* so always set the screen to the normal mode.
*/
ch = ((struct FileHandle *)BADDR(in))->fh_Type;
sendpacket(ch, ACTION_SCREEN_MODE, 0L);
fprintf(pgpout, "\n*** Program Aborted.\n");
exitPGP(6); /* INTERRUPT */
}
#endif
/*------------------------------------------------------------------------
* clock.c -- time in microseconds since first call of clock()
*
* RP: this function is missing from SAS/C library.
*/
#include <time.h>
long clock()
{
static unsigned long oldms = -1;
unsigned long cl[2],ms;
timer(cl);
ms = cl[0] * 1000000 + cl[1] % 1000000;
if(oldms == -1) {
oldms = ms;
return 0;
} else {
return ((long)(ms-oldms));
}
}
#endif /* AMIGA */
/*===========================================================================*/
/*
* other stuff for non-MSDOS systems
*/
#ifdef ATARI
#include <string.h>
#endif
#if !defined(MSDOS) && !defined(ATARI)
#include <ctype.h>
#include "charset.h"
char *strlwr(char *s)
{ /*
** Turns string s into lower case.
*/
int c;
char *p = s;
while (c = *p)
*p++ = to_lower(c);
return(s);
}
#endif /* !MSDOS && !ATARI */
#ifdef strstr
#undef strstr
/* Not implemented on some systems - return first instance of s2 in s1 */
char *mystrstr (char *s1, char *s2)
{ int i;
char *strchr();
if (!s2 || !*s2)
return s1;
for ( ; ; )
{ if (!(s1 = strchr (s1, *s2)))
return s1;
for (i=1; s2[i] && (s1[i]==s2[i]); ++i)
;
if (!s2[i])
return s1;
++s1;
}
}
#endif /* strstr */
#ifdef fopen
#undef fopen
#ifdef ATARI
#define F_BUF_SIZE 8192 /* seems to be a good value ... */
FILE *myfopen(const char *filename, const char *mode)
/* Open streams with larger buffer to increase disk I/O speed. */
/* Adjust F_BUF_SIZE to change buffer size. */
{
FILE *f;
if ( (f = fopen(filename, mode)) != NULL )
if (setvbuf(f, NULL, _IOFBF, F_BUF_SIZE)) /* no memory? */
{
fclose(f); /* then close it again */
f = fopen(filename, mode); /* and try again in normal mode */
}
return(f); /* return either handle or NULL */
}
#else /* ATARI */
/* Remove "b" from 2nd arg */
FILE *myfopen(char *filename, char *type)
{ char buf[10];
buf[0] = *type++;
if (*type=='b')
++type;
strcpy(buf+1,type);
return fopen(filename, buf);
}
#endif /* not ATARI */
#endif /* fopen */
#ifndef MSDOS
#ifdef OS2
static int chr = -1;
int kbhit(void)
{
if (chr == -1)
chr = _read_kbd(0, 0, 0);
return (chr != -1);
}
int getch(void)
{
int c;
if (chr >= 0) {
c = chr;
chr = -1;
} else
c = _read_kbd(0, 1, 0);
return c;
}
#endif /* OS2 */
#endif /* MSDOS */
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.