OpenSolaris_b135/cmd/tip/cmds.c
/*
* Copyright 2006 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.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "tip.h"
#include <limits.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(void); /* timeout function called on alarm */
void intcopy(void); /* interrupt routine for file transfers */
void transfer(char *, int, char *);
void transmit(FILE *, char *, char *);
void send(char);
void execute(char *);
void prtime(char *, time_t);
void hardwareflow(char *);
void intr(char *);
int args(char *, char *[], size_t);
int anyof(char *, char *);
/*
* FTP - remote ==> local
* get a file from the remote host
*/
void
getfl(int c)
{
char buf[256], *cp;
(void) 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) {
(void) printf("\r\n%s: cannot creat\r\n", copyname);
return;
}
/*
* collect parameters
*/
if (prompt("List command for remote system? ", buf, sizeof (buf))) {
(void) unlink(copyname);
return;
}
transfer(buf, sfd, value(EOFREAD));
}
/*
* Cu-like take command
*/
/* ARGSUSED */
void
cu_take(int cc)
{
int fd, argc;
char line[BUFSIZ], *cp;
if (prompt("[take] ", copyname, sizeof (copyname)))
return;
argc = args(copyname, argv, sizeof (argv)/sizeof (char *));
if (argc < 1 || argc > 2) {
(void) 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) {
(void) printf("\r\n%s: cannot create\r\n", argv[1]);
return;
}
(void) snprintf(line, sizeof (line), "cat %s; echo \01", argv[0]);
transfer(line, fd, "\01");
}
/*
* Bulk transfer routine --
* used by getfl(), cu_take(), and pipefile()
*/
void
transfer(char *buf, int fd, char *eofchars)
{
int ct;
char c, buffer[BUFSIZ];
char *p = buffer; /* can't be register because of longjmp */
int cnt, eof, bol;
time_t start;
sig_handler_t f;
parwrite(FD, (unsigned char *)buf, strlen(buf));
(void) kill(pid, SIGIOT);
/* Wait until read process stops */
(void) read(repdes[0], (char *)&ccc, 1);
/*
* finish command
*/
parwrite(FD, (unsigned char *)"\r", 1);
do
(void) read(FD, &c, 1);
while ((c&0177) != '\n')
;
if (sigsetjmp(intbuf, 1))
goto out;
f = signal(SIGINT, (sig_handler_t)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)))
(void) printf("\r%d", ++ct);
} else
bol = 0;
if ((cnt = (p-buffer)) == number(value(FRAMESIZE))) {
if (write(fd, buffer, cnt) != cnt) {
(void) printf("\r\nwrite error\r\n");
goto out;
}
p = buffer;
}
}
out:
if ((cnt = (p-buffer)) != 0)
if (write(fd, buffer, cnt) != cnt)
(void) printf("\r\nwrite error\r\n");
if (boolean(value(VERBOSE)))
prtime(" lines transferred in ", time(0)-start);
intr("off");
(void) write(fildes[1], (char *)&ccc, 1);
(void) signal(SIGINT, f);
(void) close(fd);
}
/*
* FTP - remote ==> local process
* send remote input to local process via pipe
*/
/* ARGSUSED */
void
pipefile(int cc)
{
int cpid, pdes[2];
char buf[256];
int status, p;
if (prompt("Local command? ", buf, sizeof (buf)))
return;
if (pipe(pdes)) {
(void) printf("can't establish pipe\r\n");
return;
}
if ((cpid = fork()) < 0) {
(void) printf("can't fork!\r\n");
return;
} else if (cpid) {
if (prompt("List command for remote system? ", buf,
sizeof (buf))) {
(void) close(pdes[0]), (void) close(pdes[1]);
(void) kill(cpid, SIGKILL);
} else {
(void) close(pdes[0]);
(void) signal(SIGPIPE, (sig_handler_t)intcopy);
transfer(buf, pdes[1], value(EOFREAD));
(void) signal(SIGPIPE, SIG_DFL);
while ((p = wait(&status)) > 0 && p != cpid)
;
}
} else {
int f;
userperm();
(void) dup2(pdes[0], 0);
(void) close(pdes[0]);
for (f = 3; f < 20; f++)
(void) close(f);
execute(buf);
(void) printf("can't execl!\r\n");
exit(0);
}
}
/*
* FTP - local ==> remote
* send local file to remote host
* terminate transmission with pseudo EOF sequence
*/
void
tip_sendfile(int cc)
{
FILE *fd;
char *fnamex;
(void) 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) {
(void) printf("%s: cannot open\r\n", fname);
return;
}
transmit(fd, value(EOFWRITE), NULL);
if (!boolean(value(ECHOCHECK))) {
struct termios buf;
(void) ioctl(FD, TCGETS, (char *)&buf); /* this does a */
(void) ioctl(FD, TCSETSF, (char *)&buf); /* wflushtty */
}
}
/*
* Bulk transfer routine to remote host --
* used by tip_sendfile() and cu_put()
*/
void
transmit(FILE *fd, char *eofchars, char *command)
{
sig_handler_t ointr;
char *pc, lastc, rc;
int c, ccount, lcount;
time_t start_t, stop_t;
(void) kill(pid, SIGIOT); /* put TIPOUT into a wait state */
timedout = 0;
if (sigsetjmp(intbuf, 1)) {
if (timedout)
(void) printf("\r\ntimed out at eol\r\n");
(void) alarm(0);
goto out;
}
ointr = signal(SIGINT, (sig_handler_t)intcopy);
intr("on");
(void) read(repdes[0], (char *)&ccc, 1);
if (command != NULL) {
for (pc = command; *pc; pc++)
send(*pc);
if (boolean(value(ECHOCHECK)))
(void) read(FD, (char *)&c, 1); /* trailing \n */
else {
struct termios buf;
/* wait for remote stty to take effect */
(void) sleep(5);
/* this does a */
(void) ioctl(FD, TCGETS, (char *)&buf);
/* wflushtty */
(void) ioctl(FD, TCSETSF, (char *)&buf);
}
}
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)
(void) printf("\r%d", lcount);
}
if (boolean(value(VERBOSE)))
(void) 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)))
(void) printf("\r%d", ++lcount);
if (boolean(value(ECHOCHECK))) {
(void) alarm(number(value(ETIMEOUT)));
do { /* wait for prompt */
(void) read(FD, &rc, 1);
} while ((rc&0177) != character(value(PROMPT)));
(void) alarm(0);
}
}
out:
if (lastc != '\n' && !boolean(value(RAWFTP)))
send('\r');
if (eofchars)
for (pc = eofchars; *pc; pc++)
send(*pc);
stop_t = time(0);
(void) 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);
(void) write(fildes[1], (char *)&ccc, 1);
intr("off");
(void) signal(SIGINT, ointr);
}
/*
* Cu-like put command
*/
/* ARGSUSED */
void
cu_put(int cc)
{
FILE *fd;
char line[BUFSIZ];
int argc;
char *copynamex;
if (prompt("[put] ", copyname, sizeof (copyname)))
return;
argc = args(copyname, argv, sizeof (argv)/sizeof (char *));
if (argc < 1 || argc > 2) {
(void) 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) {
(void) printf("%s: cannot open\r\n", copynamex);
return;
}
if (boolean(value(ECHOCHECK)))
(void) snprintf(line, sizeof (line), "cat>%s\r", argv[1]);
else
(void) snprintf(line, sizeof (line),
"stty -echo; cat>%s; stty echo\r", argv[1]);
transmit(fd, "\04", line);
}
/*
* FTP - send single character
* wait for echo & handle timeout
*/
void
send(char c)
{
char cc;
int retry = 0;
cc = c;
parwrite(FD, (unsigned char *)&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) {
(void) printf("\r\ntimeout error (%s)\r\n", ctrl(c));
if (retry++ > 3)
return;
parwrite(FD, (unsigned char *)&null, 1); /* poke it */
goto tryagain;
}
(void) alarm(number(value(ETIMEOUT)));
(void) read(FD, &cc, 1);
(void) alarm(0);
}
void
timeout(void)
{
(void) 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.
*/
void
pipeout(int c)
{
char buf[256];
int cpid, status, p;
time_t start;
(void) putchar(c);
if (prompt("Local command? ", buf, sizeof (buf)))
return;
(void) kill(pid, SIGIOT); /* put TIPOUT into a wait state */
(void) signal(SIGINT, SIG_IGN);
(void) signal(SIGQUIT, SIG_IGN);
intr("on");
(void) read(repdes[0], (char *)&ccc, 1);
/*
* Set up file descriptors in the child and
* let it go...
*/
if ((cpid = fork()) < 0)
(void) printf("can't fork!\r\n");
else if (cpid) {
start = time(0);
while ((p = wait(&status)) > 0 && p != cpid)
;
} else {
int i;
userperm();
(void) dup2(FD, 1);
for (i = 3; i < 20; i++)
(void) close(i);
(void) signal(SIGINT, SIG_DFL);
(void) signal(SIGQUIT, SIG_DFL);
execute(buf);
(void) printf("can't find `%s'\r\n", buf);
exit(0);
}
if (boolean(value(VERBOSE)))
prtime("away for ", time(0)-start);
(void) write(fildes[1], (char *)&ccc, 1);
intr("off");
(void) signal(SIGINT, SIG_DFL);
(void) signal(SIGQUIT, SIG_DFL);
}
/*
* Fork a program with:
* 0 <-> remote tty in
* 1 <-> remote tty out
* 2 <-> local tty stderr out
*/
void
consh(int c)
{
char buf[256];
int cpid, status, p;
sig_handler_t ointr, oquit;
time_t start;
(void) putchar(c);
if (prompt("Local command? ", buf, sizeof (buf)))
return;
(void) kill(pid, SIGIOT); /* put TIPOUT into a wait state */
(void) 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)
(void) printf("can't fork!\r\n");
else if (cpid) {
start = time(0);
while ((p = wait(&status)) > 0 && p != cpid)
;
raw();
(void) signal(SIGINT, ointr);
(void) signal(SIGQUIT, oquit);
} else {
int i;
userperm();
(void) dup2(FD, 0);
(void) dup2(0, 1);
for (i = 3; i < 20; i++)
(void) close(i);
(void) signal(SIGINT, SIG_DFL);
(void) signal(SIGQUIT, SIG_DFL);
execute(buf);
(void) printf("can't find `%s'\r\n", buf);
exit(0);
}
if (boolean(value(VERBOSE)))
prtime("\r\naway for ", time(0)-start);
(void) write(fildes[1], (char *)&ccc, 1);
}
/*
* Escape to local shell
*/
/* ARGSUSED */
void
shell(int cc)
{
int shpid, status;
sig_handler_t ointr, oquit;
char *cp;
(void) printf("[sh]\r\n");
ointr = signal(SIGINT, SIG_IGN);
oquit = signal(SIGQUIT, SIG_IGN);
unraw();
if (shpid = fork()) {
while (shpid != wait(&status))
;
raw();
(void) printf("\r\n!\r\n");
(void) signal(SIGINT, ointr);
(void) signal(SIGQUIT, oquit);
} else {
userperm();
(void) signal(SIGQUIT, SIG_DFL);
(void) signal(SIGINT, SIG_DFL);
if ((cp = strrchr(value(SHELL), '/')) == NULL)
cp = value(SHELL);
else
cp++;
(void) execl(value(SHELL), cp, 0);
(void) printf("\r\ncan't execl!\r\n");
exit(1);
}
}
/*
* TIPIN portion of scripting
* initiate the conversation with TIPOUT
*/
void
setscript(void)
{
char c;
if (strlen(value(RECORD)) >= PATH_MAX-1) {
(void) fprintf(stderr, "tip: record file name too long\r\n");
return;
}
/*
* enable TIPOUT side for dialogue
*/
(void) kill(pid, SIGEMT);
if (boolean(value(SCRIPT)))
(void) write(fildes[1], value(RECORD), strlen(value(RECORD)));
(void) write(fildes[1], "\n", 1);
/*
* wait for TIPOUT to finish
*/
(void) read(repdes[0], &c, 1);
if (c == 'n')
(void) fprintf(stderr, "tip: can't create record file %s\r\n",
value(RECORD));
}
/*
* Change current working directory of
* local portion of tip
*/
/* ARGSUSED */
void
chdirectory(int cc)
{
char dirname[80];
char *cp = dirname;
if (prompt("[cd] ", dirname, sizeof (dirname))) {
if (stoprompt)
return;
cp = value(HOME);
}
if (chdir(cp) < 0)
(void) printf("%s: bad directory\r\n", cp);
(void) printf("!\r\n");
}
void
tip_abort(char *msg)
{
/* don't want to hear about our child */
(void) signal(SIGCHLD, SIG_DFL);
(void) kill(pid, SIGTERM);
myperm();
disconnect(msg);
if (msg != NOSTR)
(void) printf("\r\n%s", msg);
(void) printf("\r\n[EOT]\r\n");
delock(uucplock);
unraw();
exit(0);
}
/* ARGSUSED */
void
finish(int cc)
{
char *dismsg;
if ((dismsg = value(DISCONNECT)) != NOSTR) {
(void) write(FD, dismsg, strlen(dismsg));
(void) sleep(5);
}
tip_abort(NOSTR);
}
void
intcopy(void)
{
(void) signal(SIGINT, SIG_IGN);
siglongjmp(intbuf, 1);
}
void
execute(char *s)
{
char *cp;
if ((cp = strrchr(value(SHELL), '/')) == NULL)
cp = value(SHELL);
else
cp++;
(void) execl(value(SHELL), cp, "-c", s, 0);
}
int
args(char *buf, char *a[], size_t na)
{
char *p = buf, *start;
char **parg = a;
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);
}
void
prtime(char *s, time_t a)
{
int i;
int nums[3];
for (i = 0; i < 3; i++) {
nums[i] = (int)(a % quant[i]);
a /= quant[i];
}
(void) printf("%s", s);
while (--i >= 0)
if (nums[i] || i == 0 && nums[1] == 0 && nums[2] == 0)
(void) printf("%d %s%c ", nums[i], sep[i],
nums[i] == 1 ? '\0' : 's');
(void) printf("\r\n!\r\n");
}
/* ARGSUSED */
void
variable(int cc)
{
char buf[256];
if (prompt("[set] ", buf, sizeof (buf)))
return;
vlex(buf);
if (vtable[BEAUTIFY].v_access&CHANGED) {
vtable[BEAUTIFY].v_access &= ~CHANGED;
(void) 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.
*/
void
tandem(char *option)
{
struct termios rmtty;
(void) 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);
}
(void) ioctl(FD, TCSETSF, (char *)&rmtty);
(void) ioctl(0, TCSETSF, (char *)&arg);
}
/*
* Turn hardwareflow mode on or off for remote tty.
*/
void
hardwareflow(char *option)
{
struct termios rmtty;
(void) ioctl(FD, TCGETS, (char *)&rmtty);
if (equal(option, "on")) {
rmtty.c_cflag |= (CRTSCTS|CRTSXOFF);
} else {
rmtty.c_cflag &= ~(CRTSCTS|CRTSXOFF);
}
(void) ioctl(FD, TCSETSF, (char *)&rmtty);
}
/*
* Turn interrupts from local tty on or off.
*/
void
intr(char *option)
{
if (equal(option, "on"))
arg.c_lflag |= ISIG;
else
arg.c_lflag &= ~ISIG;
(void) ioctl(0, TCSETSF, (char *)&arg);
}
/*
* Send a break.
*/
/* ARGSUSED */
void
genbrk(int cc)
{
(void) ioctl(FD, TCSBRK, 0);
}
/*
* Suspend tip
*/
void
suspend(int c)
{
unraw();
(void) kill(c == _CTRL('y') ? getpid() : 0, SIGTSTP);
raw();
}
/*
* expand a file name if it includes shell meta characters
*/
char *
expand(char name[])
{
static char xname[BUFSIZ];
char cmdbuf[BUFSIZ];
int pid, l;
char *cp, *Shell;
int s, pivec[2];
if (!anyof(name, "~{[*?$`'\"\\"))
return (name);
if (pipe(pivec) < 0) {
perror("pipe");
return (name);
}
(void) snprintf(cmdbuf, sizeof (cmdbuf), "echo %s", name);
if ((pid = vfork()) == 0) {
userperm();
Shell = value(SHELL);
if (Shell == NOSTR)
Shell = "/bin/sh";
(void) close(pivec[0]);
(void) close(1);
(void) dup(pivec[1]);
(void) close(pivec[1]);
(void) close(2);
(void) execl(Shell, Shell, "-c", cmdbuf, 0);
_exit(1);
}
if (pid == -1) {
perror("fork");
(void) close(pivec[0]);
(void) close(pivec[1]);
return (NOSTR);
}
(void) close(pivec[1]);
l = read(pivec[0], xname, BUFSIZ);
(void) close(pivec[0]);
while (wait(&s) != pid)
;
s &= 0377;
if (s != 0 && s != SIGPIPE) {
(void) fprintf(stderr, "\"Echo\" failed\n");
return (NOSTR);
}
if (l < 0) {
perror("read");
return (NOSTR);
}
if (l == 0) {
(void) fprintf(stderr, "\"%s\": No match\n", name);
return (NOSTR);
}
if (l == BUFSIZ) {
(void) 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?
*/
int
anyof(char *s1, char *s2)
{
int c;
while ((c = *s1++) != 0)
if (any(c, s2))
return (1);
return (0);
}