/*
* FTP - send single character
* wait for echo & handle timeout
*/
static void
send(int c)
{
char cc;
int retry = 0;
cc = c;
parwrite(FD, &cc, 1);
if (number(value(CDELAY)) > 0 && c != '\r')
usleep(number(value(CDELAY)));
if (!boolean(value(ECHOCHECK))) {
if (number(value(LDELAY)) > 0 && c == '\r')
usleep(number(value(LDELAY)));
return;
}
tryagain:
timedout = 0;
alarm((unsigned int)lvalue(ETIMEOUT));
read(FD, &cc, 1);
alarm(0);
if (timedout) {
printf("\r\ntimeout error (%s)\r\n", ctrl(c));
if (retry++ > 3)
return;
parwrite(FD, &null, 1); /* poke it */
goto tryagain;
}
}
/*
* 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);
}
/*
* ****TIPIN TIPIN****
*/
static void
tipin(void)
{
int bol = 1;
int gch;
char ch;
/*
* Kinda klugey here...
* check for scripting being turned on from the .tiprc file,
* but be careful about just using setscript(), as we may
* send a SIGEMT before tipout has a chance to set up catching
* it; so wait a second, then setscript()
*/
if (boolean(value(SCRIPT))) {
sleep(1);
setscript();
}
while (1) {
gch = getchar()&STRIP_PAR;
/* XXX does not check for EOF */
if ((gch == character(value(ESCAPE))) && bol) {
if (!noesc) {
if (!(gch = escape()))
continue;
}
} else if (!cumode && gch == character(value(RAISECHAR))) {
setboolean(value(RAISE), !boolean(value(RAISE)));
continue;
} else if (gch == '\r') {
bol = 1;
ch = gch;
parwrite(FD, &ch, 1);
if (boolean(value(HALFDUPLEX)))
printf("\r\n");
continue;
} else if (!cumode && gch == character(value(FORCE)))
gch = getchar()&STRIP_PAR;
bol = any(gch, value(EOL));
if (boolean(value(RAISE)) && islower(gch))
gch = toupper(gch);
ch = gch;
parwrite(FD, &ch, 1);
if (boolean(value(HALFDUPLEX)))
printf("%c", ch);
}
}
/*
* ****TIPIN TIPIN****
*/
void
tipin(void)
{
unsigned char gch, c;
int bol = 1;
/*
* Kinda klugey here...
* check for scripting being turned on from the .tiprc file,
* but be careful about just using setscript(), as we may
* send a SIGEMT before tipout has a chance to set up catching
* it; so wait a second, then setscript()
*/
if (boolean(value(SCRIPT))) {
(void) sleep(1);
setscript();
}
for (;;) {
gch = getchar()&0377;
if ((gch == character(value(ESCAPE))) && bol) {
if (!(gch = escape()))
continue;
} else if (!cumode && gch == character(value(RAISECHAR))) {
boolean(value(RAISE)) = !boolean(value(RAISE));
continue;
} else if (gch == '\r') {
bol = 1;
parwrite(FD, &gch, 1);
if (boolean(value(HALFDUPLEX)))
(void) printf("\r\n");
continue;
} else if (!cumode && gch == character(value(FORCE)))
gch = getchar()&0377;
bol = any(gch, value(EOL));
if (boolean(value(RAISE)) && islower(gch))
gch = toupper(gch);
c = gch;
parwrite(FD, &gch, 1);
if (boolean(value(HALFDUPLEX)))
(void) putchar(c);
}
}
/*
* Escape handler --
* called on recognition of ``escapec'' at the beginning of a line
*/
unsigned char
escape(void)
{
unsigned char gch;
esctable_t *p;
char c = character(value(ESCAPE));
gch = (getchar()&0377);
for (p = etable; p->e_char; p++)
if (p->e_char == gch) {
if ((p->e_flags&PRIV) && uid)
continue;
(void) printf("%s", ctrl(c));
(*p->e_func)(gch);
return (0);
}
/* ESCAPE ESCAPE forces ESCAPE */
if (c != gch)
parwrite(FD, (unsigned char *)&c, 1);
return (gch);
}
/*
* Escape handler --
* called on recognition of ``escapec'' at the beginning of a line
*/
static int
escape(void)
{
int gch;
esctable_t *p;
char c = character(value(ESCAPE));
gch = (getchar()&STRIP_PAR);
/* XXX does not check for EOF */
for (p = etable; p->e_char; p++)
if (p->e_char == gch) {
if ((p->e_flags&PRIV) && uid)
continue;
printf("%s", ctrl(c));
(*p->e_func)(gch);
return (0);
}
/* ESCAPE ESCAPE forces ESCAPE */
if (c != gch)
parwrite(FD, &c, 1);
return (gch);
}
/*
* Establish connection for tip
*
* If DU is true, we should dial an ACU whose type is AT.
* The phone numbers are in PN, and the call unit is in CU.
*
* If the PN is an '@', then we consult the PHONES file for
* the phone numbers. This file is /etc/phones, unless overriden
* by an exported shell variable.
*
* The data base files must be in the format:
* host-name[ \t]*phone-number
* with the possibility of multiple phone numbers
* for a single host acting as a rotary (in the order
* found in the file).
*/
char *
con(void)
{
char *cp = PN;
char *phnum, string[256];
FILE *fd;
volatile int tried = 0;
if (!DU) { /* regular connect message */
if (CM != NOSTR)
parwrite(FD, CM, size(CM));
logent(value(HOST), "", DV, "call completed");
return (NOSTR);
}
/*
* @ =>'s use data base in PHONES environment variable
* otherwise, use /etc/phones
*/
signal(SIGINT, acuabort);
signal(SIGQUIT, acuabort);
if (setjmp(jmpbuf)) {
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
printf("\ncall aborted\n");
logent(value(HOST), "", "", "call aborted");
if (acu != NOACU) {
setboolean(value(VERBOSE), FALSE);
if (conflag)
disconnect(NOSTR);
else
(*acu->acu_abort)();
}
return ("interrupt");
}
if ((acu = acutype(AT)) == NOACU)
return ("unknown ACU type");
if (*cp != '@') {
while (*cp) {
phnum = cp;
cp += strcspn(cp, ",");
if (*cp != '\0')
*cp++ = '\0';
if (strlen(phnum) == 0)
continue;
conflag = (*acu->acu_dialer)(phnum, CU);
if (conflag)
break;
logent(value(HOST), phnum, acu->acu_name, "call failed");
tried++;
}
} else {
if ((fd = fopen(PH, "r")) == NOFILE) {
printf("%s: ", PH);
return ("can't open phone number file");
}
while (fgets(string, sizeof(string), fd) != NOSTR) {
cp = &string[strcspn(string, " \t\n")];
if (*cp != '\0')
*cp++ = '\0';
if (strcmp(string, value(HOST)) != 0)
continue;
cp += strspn(cp, " \t\n");
phnum = cp;
*(cp + strcspn(cp, ",\n")) = '\0';
if (strlen(phnum) == 0)
continue;
conflag = (*acu->acu_dialer)(phnum, CU);
if (conflag)
break;
logent(value(HOST), phnum, acu->acu_name, "call failed");
tried++;
}
fclose(fd);
}
if (conflag) {
if (CM != NOSTR)
parwrite(FD, CM, size(CM));
logent(value(HOST), phnum, acu->acu_name, "call completed");
return (NOSTR);
} else if (!tried) {
logent(value(HOST), "", acu->acu_name, "missing phone number");
return ("missing phone number");
} else {
(*acu->acu_abort)();
return ("call failed");
}
}
int
main(int argc, char *argv[])
{
char *system = NOSTR;
int i;
char *p;
char sbuf[15];
gid = getgid();
egid = getegid();
uid = getuid();
euid = geteuid();
if (equal(sname(argv[0]), "cu")) {
cumode = 1;
cumain(argc, argv);
goto cucommon;
}
if (argc > 4) {
(void) fprintf(stderr,
"usage: tip [-v] [-speed] [system-name]\n");
return (1);
}
if (!isatty(0)) {
(void) fprintf(stderr, "tip: must be interactive\n");
return (1);
}
for (; argc > 1; argv++, argc--) {
if (argv[1][0] != '-')
system = argv[1];
else switch (argv[1][1]) {
case 'v':
vflag++;
break;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
BR = atoi(&argv[1][1]);
break;
default:
(void) fprintf(stderr, "tip: %s, unknown option\n",
argv[1]);
break;
}
}
(void) setlocale(LC_CTYPE, "");
if (system == NOSTR)
goto notnumber;
for (p = system; *p; p++)
if (isalpha(*p))
goto notnumber;
/*
* System name is really a phone number...
* Copy the number then stomp on the original (in case the number
* is private, we don't want 'ps' or 'w' to find it).
*/
if (strlen(system) > sizeof (PNbuf) - 1) {
(void) fprintf(stderr,
"tip: phone number too long (max = %d bytes)\n",
sizeof (PNbuf) - 1);
return (1);
}
(void) strncpy(PNbuf, system, sizeof (PNbuf) - 1);
for (p = system; *p; p++)
*p = '\0';
PN = PNbuf;
(void) snprintf(sbuf, sizeof (sbuf), "tip%d", BR);
system = sbuf;
notnumber:
(void) signal(SIGINT, (sig_handler_t)cleanup);
(void) signal(SIGQUIT, (sig_handler_t)cleanup);
(void) signal(SIGHUP, (sig_handler_t)cleanup);
(void) signal(SIGTERM, (sig_handler_t)cleanup);
if ((i = hunt(system)) == 0) {
(void) printf("all ports busy\n");
return (3);
}
if (i == -1) {
(void) printf("link down\n");
delock(uucplock);
return (3);
}
setbuf(stdout, NULL);
loginit();
/*
* Now that we have the logfile and the ACU open
* return to the real uid and gid. These things will
* be closed on exit. The saved-setuid uid and gid
* allows us to get the original setuid permissions back
* for removing the uucp lock.
*/
userperm();
/*
* Kludge, there's no easy way to get the initialization
* in the right order, so force it here.
* Do the open here, before we change back to real uid.
* We will check whether the open succeeded later, when
* (and if) we actually go to use the file.
*/
if ((PH = getenv("PHONES")) == NOSTR) {
myperm();
PH = "/etc/phones";
}
phfd = fopen(PH, "r");
userperm();
vinit(); /* init variables */
setparity("none"); /* set the parity table */
if ((i = speed(number(value(BAUDRATE)))) == NULL) {
(void) printf("tip: bad baud rate %d\n",
number(value(BAUDRATE)));
myperm();
delock(uucplock);
return (3);
}
/*
* Hardwired connections require the
* line speed set before they make any transmissions
* (this is particularly true of things like a DF03-AC)
*/
if (HW)
ttysetup(i);
if (p = connect()) {
(void) printf("\07%s\n[EOT]\n", p);
myperm();
delock(uucplock);
return (1);
}
/*
* Always setup the tty again here in case hardware flow
* control was selected, which can only be set after the
* connection is made, or in case this is not a hardwired
* modem (rare these days) that likewise can only be setup
* after the connection is made.
*/
ttysetup(i);
cucommon:
/*
* From here down the code is shared with
* the "cu" version of tip.
*/
(void) ioctl(0, TCGETS, (char *)&defarg);
arg = defarg;
/* turn off input processing */
arg.c_lflag &= ~(ICANON|ISIG|ECHO|IEXTEN);
arg.c_cc[VMIN] = 1;
arg.c_cc[VTIME] = 0;
arg.c_iflag &= ~(INPCK|IXON|IXOFF|ICRNL);
arg.c_oflag = 0; /* turn off all output processing */
/* handle tandem mode in case was set in remote file */
if (boolean(value(TAND)))
tandem("on");
else
tandem("off");
raw();
(void) pipe(fildes); (void) pipe(repdes);
(void) signal(SIGALRM, (sig_handler_t)timeout);
/*
* Everything's set up now:
* connection established (hardwired or dialup)
* line conditioned (baud rate, mode, etc.)
* internal data structures (variables)
* so, fork one process for local side and one for remote.
*/
if (CM != NOSTR) {
(void) sleep(2); /* let line settle */
parwrite(FD, (unsigned char *)CM, strlen(CM));
}
(void) printf(cumode ? "Connected\r\n" : "\07connected\r\n");
(void) signal(SIGCHLD, (sig_handler_t)deadkid);
if (pid = fork())
tipin();
else
tipout();
/*NOTREACHED*/
}
/*
* Bulk transfer routine --
* used by getfl(), cu_take(), and pipefile()
*/
static void
transfer(char *buf, int fd, char *eofchars)
{
int ct, eof;
char c, buffer[BUFSIZ];
char *p = buffer;
size_t cnt;
time_t start;
sig_t f;
char r;
if (number(value(FRAMESIZE)) > BUFSIZ || number(value(FRAMESIZE)) < 1) {
printf("framesize must be >= 1 and <= %d\r\n", BUFSIZ);
close(fd);
return;
}
parwrite(FD, buf, size(buf));
quit = 0;
kill(tipout_pid, SIGIOT);
read(repdes[0], (char *)&ccc, 1); /* Wait until read process stops */
/*
* finish command
*/
r = '\r';
parwrite(FD, &r, 1);
do
read(FD, &c, 1);
while ((c&STRIP_PAR) != '\n');
tcsetattr(0, TCSAFLUSH, &defchars);
(void) setjmp(intbuf);
f = signal(SIGINT, intcopy);
start = time(0);
for (ct = 0; !quit;) {
eof = read(FD, &c, 1) <= 0;
c &= STRIP_PAR;
if (quit)
continue;
if (eof || any(c, eofchars))
break;
if (c == 0)
continue; /* ignore nulls */
if (c == '\r')
continue;
*p++ = c;
if (c == '\n' && boolean(value(VERBOSE)))
printf("\r%d", ++ct);
if ((cnt = (p-buffer)) == (size_t)number(value(FRAMESIZE))) {
if ((size_t)write(fd, buffer, cnt) != cnt) {
printf("\r\nwrite error\r\n");
quit = 1;
}
p = buffer;
}
}
if ((cnt = (p-buffer)))
if ((size_t)write(fd, buffer, cnt) != cnt)
printf("\r\nwrite error\r\n");
if (boolean(value(VERBOSE)))
prtime(" lines transferred in ", time(0)-start);
tcsetattr(0, TCSAFLUSH, &term);
write(fildes[1], (char *)&ccc, 1);
signal(SIGINT, f);
close(fd);
}
/*
* 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);
}
