cmds.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#ident "%Z%%M% %I% %E% SMI" /* from UCB 5.4 5/5/86 */
#include "tip.h"
#ifdef USG
#include <unistd.h>
#else
#include <vfork.h>
#endif
/*
* tip
*
* miscellaneous commands
*/
int quant[] = { 60, 60, 24 };
char null = '\0';
char *sep[] = { "second", "minute", "hour" };
static char *argv[10]; /* argument vector for take and put */
sigjmp_buf intbuf; /* for interrupts and timeouts */
void timeout(); /* timeout function called on alarm */
void intcopy(); /* interrupt routine for file transfers */
/*
* FTP - remote ==> local
* get a file from the remote host
*/
getfl(c)
char c;
{
char buf[256], *cp, *expand();
putchar(c);
/*
* get the UNIX receiving file's name
*/
if (prompt("Local file name? ", copyname, sizeof (copyname)))
return;
cp = expand(copyname);
if (cp == NOSTR)
return;
if ((sfd = creat(cp, 0666)) < 0) {
printf("\r\n%s: cannot creat\r\n", copyname);
return;
}
/*
* collect parameters
*/
if (prompt("List command for remote system? ", buf, sizeof (buf))) {
unlink(copyname);
return;
}
transfer(buf, sfd, value(EOFREAD));
}
/*
* Cu-like take command
*/
cu_take(cc)
char cc;
{
int fd, argc;
char line[BUFSIZ], *expand(), *cp;
if (prompt("[take] ", copyname, sizeof (copyname)))
return;
argc = args(copyname, argv, sizeof (argv)/sizeof (char *));
if (argc < 1 || argc > 2) {
printf("usage: <take> from [to]\r\n");
return;
}
if (argc == 1)
argv[1] = argv[0];
cp = expand(argv[1]);
if (cp == NOSTR)
return;
if ((fd = creat(cp, 0666)) < 0) {
printf("\r\n%s: cannot create\r\n", argv[1]);
return;
}
sprintf(line, "cat %s; echo \01", argv[0]);
transfer(line, fd, "\01");
}
/*
* Bulk transfer routine --
* used by getfl(), cu_take(), and pipefile()
*/
transfer(buf, fd, eofchars)
char *buf, *eofchars;
{
register int ct;
char c, buffer[BUFSIZ];
char *p = buffer; /* can't be register because of longjmp */
register int cnt, eof, bol;
time_t start;
void (*f)();
parwrite(FD, buf, strlen(buf));
kill(pid, SIGIOT);
read(repdes[0], (char *)&ccc, 1); /* Wait until read process stops */
/*
* finish command
*/
parwrite(FD, "\r", 1);
do
read(FD, &c, 1);
while ((c&0177) != '\n');
if (sigsetjmp(intbuf, 1))
goto out;
f = signal(SIGINT, intcopy);
intr("on");
start = time(0);
bol = 1;
ct = 0;
for (;;) {
eof = read(FD, &c, 1) <= 0;
if (noparity)
c &= 0377;
else
c &= 0177;
if (eof || (bol && any(c, eofchars)))
break;
if (c == 0)
continue; /* ignore nulls */
if (c == '\r')
continue;
*p++ = c;
if (c == '\n') {
bol = 1;
if (boolean(value(VERBOSE)))
printf("\r%d", ++ct);
} else
bol = 0;
if ((cnt = (p-buffer)) == number(value(FRAMESIZE))) {
if (write(fd, buffer, cnt) != cnt) {
printf("\r\nwrite error\r\n");
goto out;
}
p = buffer;
}
}
out:
if (cnt = (p-buffer))
if (write(fd, buffer, cnt) != cnt)
printf("\r\nwrite error\r\n");
if (boolean(value(VERBOSE)))
prtime(" lines transferred in ", time(0)-start);
intr("off");
write(fildes[1], (char *)&ccc, 1);
signal(SIGINT, f);
close(fd);
}
/*
* FTP - remote ==> local process
* send remote input to local process via pipe
*/
pipefile()
{
int cpid, pdes[2];
char buf[256];
int status, p;
extern int errno;
if (prompt("Local command? ", buf, sizeof (buf)))
return;
if (pipe(pdes)) {
printf("can't establish pipe\r\n");
return;
}
if ((cpid = fork()) < 0) {
printf("can't fork!\r\n");
return;
} else if (cpid) {
if (prompt("List command for remote system? ", buf,
sizeof (buf))) {
close(pdes[0]), close(pdes[1]);
kill(cpid, SIGKILL);
} else {
close(pdes[0]);
signal(SIGPIPE, intcopy);
transfer(buf, pdes[1], value(EOFREAD));
signal(SIGPIPE, SIG_DFL);
while ((p = wait(&status)) > 0 && p != cpid)
;
}
} else {
register int f;
userperm();
dup2(pdes[0], 0);
close(pdes[0]);
for (f = 3; f < 20; f++)
close(f);
execute(buf);
printf("can't execl!\r\n");
exit(0);
}
}
/*
* FTP - local ==> remote
* send local file to remote host
* terminate transmission with pseudo EOF sequence
*/
sendfile(cc)
char cc;
{
FILE *fd;
char *fnamex;
char *expand();
putchar(cc);
/*
* get file name
*/
if (prompt("Local file name? ", fname, sizeof (fname)))
return;
/*
* look up file
*/
fnamex = expand(fname);
if (fnamex == NOSTR)
return;
if ((fd = fopen(fnamex, "r")) == NULL) {
printf("%s: cannot open\r\n", fname);
return;
}
transmit(fd, value(EOFWRITE), NULL);
if (!boolean(value(ECHOCHECK))) {
struct termios buf;
ioctl(FD, TCGETS, (char *)&buf); /* this does a */
ioctl(FD, TCSETSF, (char *)&buf); /* wflushtty */
}
}
/*
* Bulk transfer routine to remote host --
* used by sendfile() and cu_put()
*/
transmit(fd, eofchars, command)
FILE *fd;
char *eofchars, *command;
{
void (*ointr)();
char *pc, lastc, rc;
int c, ccount, lcount;
time_t start_t, stop_t;
kill(pid, SIGIOT); /* put TIPOUT into a wait state */
timedout = 0;
if (sigsetjmp(intbuf, 1)) {
if (timedout)
printf("\r\ntimed out at eol\r\n");
alarm(0);
goto out;
}
ointr = signal(SIGINT, intcopy);
intr("on");
read(repdes[0], (char *)&ccc, 1);
if (command != NULL) {
for (pc = command; *pc; pc++)
send(*pc);
if (boolean(value(ECHOCHECK)))
read(FD, (char *)&c, 1); /* trailing \n */
else {
struct termios buf;
sleep(5); /* wait for remote stty to take effect */
ioctl(FD, TCGETS, (char *)&buf); /* this does a */
ioctl(FD, TCSETSF, (char *)&buf); /* wflushtty */
}
}
lcount = 0;
lastc = '\0';
start_t = time(0);
if (boolean(value(RAWFTP))) {
while ((c = getc(fd)) != EOF) {
lcount++;
send(c);
if (boolean(value(VERBOSE)) && lcount%100 == 0)
printf("\r%d", lcount);
}
if (boolean(value(VERBOSE)))
printf("\r%d", lcount);
goto out;
}
for (;;) {
ccount = 0;
do {
c = getc(fd);
if (c == EOF)
goto out;
if (c == 0177)
continue;
lastc = c;
if (c < 040) {
if (c == '\n') {
c = '\r';
} else if (c == '\t') {
if (boolean(value(TABEXPAND))) {
send(' ');
while ((++ccount % 8) != 0)
send(' ');
continue;
}
} else
continue;
}
send(c);
} while (c != '\r');
if (boolean(value(VERBOSE)))
printf("\r%d", ++lcount);
if (boolean(value(ECHOCHECK))) {
alarm(number(value(ETIMEOUT)));
do { /* wait for prompt */
read(FD, &rc, 1);
} while ((rc&0177) != character(value(PROMPT)));
alarm(0);
}
}
out:
if (lastc != '\n' && !boolean(value(RAWFTP)))
send('\r');
if (eofchars)
for (pc = eofchars; *pc; pc++)
send(*pc);
stop_t = time(0);
fclose(fd);
if (boolean(value(VERBOSE)))
if (boolean(value(RAWFTP)))
prtime(" chars transferred in ", stop_t-start_t);
else
prtime(" lines transferred in ", stop_t-start_t);
write(fildes[1], (char *)&ccc, 1);
intr("off");
signal(SIGINT, ointr);
}
/*
* Cu-like put command
*/
cu_put(cc)
char cc;
{
FILE *fd;
char line[BUFSIZ];
int argc;
char *expand();
char *copynamex;
if (prompt("[put] ", copyname, sizeof (copyname)))
return;
argc = args(copyname, argv, sizeof (argv)/sizeof (char *));
if (argc < 1 || argc > 2) {
printf("usage: <put> from [to]\r\n");
return;
}
if (argc == 1)
argv[1] = argv[0];
copynamex = expand(argv[0]);
if (copynamex == NOSTR)
return;
if ((fd = fopen(copynamex, "r")) == NULL) {
printf("%s: cannot open\r\n", copynamex);
return;
}
if (boolean(value(ECHOCHECK)))
sprintf(line, "cat>%s\r", argv[1]);
else
sprintf(line, "stty -echo; cat>%s; stty echo\r", argv[1]);
transmit(fd, "\04", line);
}
/*
* FTP - send single character
* wait for echo & handle timeout
*/
send(c)
char c;
{
char cc;
int retry = 0;
cc = c;
parwrite(FD, &cc, 1);
#ifdef notdef
if (number(value(CDELAY)) > 0 && c != '\r')
nap(number(value(CDELAY)));
#endif
if (!boolean(value(ECHOCHECK))) {
#ifdef notdef
if (number(value(LDELAY)) > 0 && c == '\r')
nap(number(value(LDELAY)));
#endif
return;
}
tryagain:
timedout = 0;
if (sigsetjmp(intbuf, 1) && timedout) {
printf("\r\ntimeout error (%s)\r\n", ctrl(c));
if (retry++ > 3)
return;
parwrite(FD, &null, 1); /* poke it */
goto tryagain;
}
alarm(number(value(ETIMEOUT)));
read(FD, &cc, 1);
alarm(0);
}
void
timeout()
{
signal(SIGALRM, (sig_handler_t)timeout);
timedout = 1;
siglongjmp(intbuf, 1);
}
/*
* Stolen from consh() -- puts a remote file on the output of a local command.
* Identical to consh() except for where stdout goes.
*/
pipeout(c)
{
char buf[256];
int cpid, status, p;
time_t start;
putchar(c);
if (prompt("Local command? ", buf, sizeof (buf)))
return;
kill(pid, SIGIOT); /* put TIPOUT into a wait state */
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
intr("on");
read(repdes[0], (char *)&ccc, 1);
/*
* Set up file descriptors in the child and
* let it go...
*/
if ((cpid = fork()) < 0)
printf("can't fork!\r\n");
else if (cpid) {
start = time(0);
while ((p = wait(&status)) > 0 && p != cpid)
;
} else {
register int i;
userperm();
dup2(FD, 1);
for (i = 3; i < 20; i++)
close(i);
signal(SIGINT, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
execute(buf);
printf("can't find `%s'\r\n", buf);
exit(0);
}
if (boolean(value(VERBOSE)))
prtime("away for ", time(0)-start);
write(fildes[1], (char *)&ccc, 1);
intr("off");
signal(SIGINT, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
}
/*
* Fork a program with:
* 0 <-> remote tty in
* 1 <-> remote tty out
* 2 <-> local tty stderr out
*/
consh(c)
{
char buf[256];
int cpid, status, p;
void (*ointr)(), (*oquit)();
time_t start;
putchar(c);
if (prompt("Local command? ", buf, sizeof (buf)))
return;
kill(pid, SIGIOT); /* put TIPOUT into a wait state */
read(repdes[0], (char *)&ccc, 1);
ointr = signal(SIGINT, SIG_IGN);
oquit = signal(SIGQUIT, SIG_IGN);
unraw();
/*
* Set up file descriptors in the child and
* let it go...
*/
if ((cpid = fork()) < 0)
printf("can't fork!\r\n");
else if (cpid) {
start = time(0);
while ((p = wait(&status)) > 0 && p != cpid)
;
raw();
signal(SIGINT, ointr);
signal(SIGQUIT, oquit);
} else {
register int i;
userperm();
dup2(FD, 0);
dup2(0, 1);
for (i = 3; i < 20; i++)
close(i);
signal(SIGINT, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
execute(buf);
printf("can't find `%s'\r\n", buf);
exit(0);
}
if (boolean(value(VERBOSE)))
prtime("\r\naway for ", time(0)-start);
write(fildes[1], (char *)&ccc, 1);
}
/*
* Escape to local shell
*/
shell()
{
int shpid, status;
void (*ointr)(), (*oquit)();
char *cp;
printf("[sh]\r\n");
ointr = signal(SIGINT, SIG_IGN);
oquit = signal(SIGQUIT, SIG_IGN);
unraw();
if (shpid = fork()) {
while (shpid != wait(&status))
;
raw();
printf("\r\n!\r\n");
signal(SIGINT, ointr);
signal(SIGQUIT, oquit);
} else {
userperm();
signal(SIGQUIT, SIG_DFL);
signal(SIGINT, SIG_DFL);
if ((cp = strrchr(value(SHELL), '/')) == NULL)
cp = value(SHELL);
else
cp++;
execl(value(SHELL), cp, 0);
printf("\r\ncan't execl!\r\n");
exit(1);
}
}
/*
* TIPIN portion of scripting
* initiate the conversation with TIPOUT
*/
setscript()
{
char c;
/*
* enable TIPOUT side for dialogue
*/
kill(pid, SIGEMT);
if (boolean(value(SCRIPT)))
write(fildes[1], value(RECORD), strlen(value(RECORD)));
write(fildes[1], "\n", 1);
/*
* wait for TIPOUT to finish
*/
read(repdes[0], &c, 1);
if (c == 'n')
fprintf(stderr, "tip: can't create record file %s\r\n",
value(RECORD));
}
/*
* Change current working directory of
* local portion of tip
*/
chdirectory()
{
char dirname[80];
register char *cp = dirname;
if (prompt("[cd] ", dirname, sizeof (dirname))) {
if (stoprompt)
return;
cp = value(HOME);
}
if (chdir(cp) < 0)
printf("%s: bad directory\r\n", cp);
printf("!\r\n");
}
/* XXX - really should rename this routine to avoid conflict with libc */
abort(msg)
char *msg;
{
signal(SIGCHLD, SIG_DFL); /* don't want to hear about our child */
kill(pid, SIGTERM);
myperm();
disconnect(msg);
if (msg != NOSTR)
printf("\r\n%s", msg);
printf("\r\n[EOT]\r\n");
delock(uucplock);
unraw();
exit(0);
}
finish()
{
char *dismsg;
if ((dismsg = value(DISCONNECT)) != NOSTR) {
write(FD, dismsg, strlen(dismsg));
sleep(5);
}
abort(NOSTR);
}
void
intcopy()
{
signal(SIGINT, SIG_IGN);
siglongjmp(intbuf, 1);
}
execute(s)
char *s;
{
register char *cp;
if ((cp = strrchr(value(SHELL), '/')) == NULL)
cp = value(SHELL);
else
cp++;
execl(value(SHELL), cp, "-c", s, 0);
}
args(buf, a, na)
char *buf, *a[];
size_t na;
{
register char *p = buf, *start;
register char **parg = a;
register int n = 0;
do {
while (*p && (*p == ' ' || *p == '\t'))
p++;
start = p;
if (*p)
*parg = p;
while (*p && (*p != ' ' && *p != '\t'))
p++;
if (p != start)
parg++, n++;
if (*p)
*p++ = '\0';
} while (*p && n < na);
return (n);
}
prtime(s, a)
char *s;
time_t a;
{
register i;
int nums[3];
for (i = 0; i < 3; i++) {
nums[i] = (int)(a % quant[i]);
a /= quant[i];
}
printf("%s", s);
while (--i >= 0)
if (nums[i] || i == 0 && nums[1] == 0 && nums[2] == 0)
printf("%d %s%c ", nums[i], sep[i],
nums[i] == 1 ? '\0' : 's');
printf("\r\n!\r\n");
}
variable()
{
char buf[256];
if (prompt("[set] ", buf, sizeof (buf)))
return;
vlex(buf);
if (vtable[BEAUTIFY].v_access&CHANGED) {
vtable[BEAUTIFY].v_access &= ~CHANGED;
kill(pid, SIGSYS);
}
if (vtable[SCRIPT].v_access&CHANGED) {
vtable[SCRIPT].v_access &= ~CHANGED;
setscript();
/*
* So that "set record=blah script" doesn't
* cause two transactions to occur.
*/
if (vtable[RECORD].v_access&CHANGED)
vtable[RECORD].v_access &= ~CHANGED;
}
if (vtable[RECORD].v_access&CHANGED) {
vtable[RECORD].v_access &= ~CHANGED;
if (boolean(value(SCRIPT)))
setscript();
}
if (vtable[TAND].v_access&CHANGED) {
vtable[TAND].v_access &= ~CHANGED;
if (boolean(value(TAND)))
tandem("on");
else
tandem("off");
}
if (vtable[LECHO].v_access&CHANGED) {
vtable[LECHO].v_access &= ~CHANGED;
boolean(value(HALFDUPLEX)) = boolean(value(LECHO));
}
if (vtable[PARITY].v_access&CHANGED) {
vtable[PARITY].v_access &= ~CHANGED;
setparity(NULL);
}
if (vtable[BAUDRATE].v_access&CHANGED) {
vtable[BAUDRATE].v_access &= ~CHANGED;
ttysetup(speed(number(value(BAUDRATE))));
}
if (vtable[HARDWAREFLOW].v_access & CHANGED) {
vtable[HARDWAREFLOW].v_access &= ~CHANGED;
if (boolean(value(HARDWAREFLOW)))
hardwareflow("on");
else
hardwareflow("off");
}
}
/*
* Turn tandem mode on or off for remote tty.
*/
tandem(option)
char *option;
{
struct termios rmtty;
ioctl(FD, TCGETS, (char *)&rmtty);
if (equal(option, "on")) {
rmtty.c_iflag |= IXOFF|IXON;
arg.c_iflag |= IXOFF|IXON;
rmtty.c_cc[VSTART] = defarg.c_cc[VSTART];
rmtty.c_cc[VSTOP] = defarg.c_cc[VSTOP];
} else {
rmtty.c_iflag &= ~(IXOFF|IXON);
arg.c_iflag &= ~(IXOFF|IXON);
}
ioctl(FD, TCSETSF, (char *)&rmtty);
ioctl(0, TCSETSF, (char *)&arg);
}
/*
* Turn hardwareflow mode on or off for remote tty.
*/
hardwareflow(option)
char *option;
{
struct termios rmtty;
ioctl(FD, TCGETS, (char *)&rmtty);
if (equal(option, "on")) {
rmtty.c_cflag |= (CRTSCTS|CRTSXOFF);
} else {
rmtty.c_cflag &= ~(CRTSCTS|CRTSXOFF);
}
ioctl(FD, TCSETSF, (char *)&rmtty);
}
/*
* Turn interrupts from local tty on or off.
*/
intr(option)
char *option;
{
if (equal(option, "on"))
arg.c_lflag |= ISIG;
else
arg.c_lflag &= ~ISIG;
ioctl(0, TCSETSF, (char *)&arg);
}
/*
* Send a break.
*/
genbrk()
{
ioctl(FD, TCSBRK, 0);
}
/*
* Suspend tip
*/
suspend(c)
char c;
{
unraw();
kill(c == _CTRL('y') ? getpid() : 0, SIGTSTP);
raw();
}
/*
* expand a file name if it includes shell meta characters
*/
char *
expand(name)
char name[];
{
static char xname[BUFSIZ];
char cmdbuf[BUFSIZ];
register int pid, l, rc;
register char *cp, *Shell;
int s, pivec[2];
void (*sigint)();
if (!anyof(name, "~{[*?$`'\"\\"))
return (name);
/* sigint = signal(SIGINT, SIG_IGN); */
if (pipe(pivec) < 0) {
perror("pipe");
/* signal(SIGINT, sigint) */
return (name);
}
sprintf(cmdbuf, "echo %s", name);
if ((pid = vfork()) == 0) {
userperm();
Shell = value(SHELL);
if (Shell == NOSTR)
Shell = "/bin/sh";
close(pivec[0]);
close(1);
dup(pivec[1]);
close(pivec[1]);
close(2);
execl(Shell, Shell, "-c", cmdbuf, 0);
_exit(1);
}
if (pid == -1) {
perror("fork");
close(pivec[0]);
close(pivec[1]);
return (NOSTR);
}
close(pivec[1]);
l = read(pivec[0], xname, BUFSIZ);
close(pivec[0]);
while (wait(&s) != pid);
;
s &= 0377;
if (s != 0 && s != SIGPIPE) {
fprintf(stderr, "\"Echo\" failed\n");
return (NOSTR);
}
if (l < 0) {
perror("read");
return (NOSTR);
}
if (l == 0) {
fprintf(stderr, "\"%s\": No match\n", name);
return (NOSTR);
}
if (l == BUFSIZ) {
fprintf(stderr, "Buffer overflow expanding \"%s\"\n", name);
return (NOSTR);
}
xname[l] = 0;
for (cp = &xname[l-1]; *cp == '\n' && cp > xname; cp--)
;
*++cp = '\0';
return (xname);
}
/*
* Are any of the characters in the two strings the same?
*/
anyof(s1, s2)
register char *s1, *s2;
{
register int c;
while (c = *s1++)
if (any(c, s2))
return (1);
return (0);
}