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- /* agetty.c - another getty program for Linux. By W. Z. Venema 1989
- Ported to Linux by Peter Orbaek <poe@daimi.aau.dk>
- This program in freely distributable. The entire man-page used to
- be here. Now read the real man-page agetty.8 instead.
- */
-
- #ifndef lint
- char sccsid[] = "@(#) agetty.c 1.29 9/1/91 23:22:00";
- #endif
-
- #include <stdio.h>
- #include <unistd.h>
- #include <stdlib.h>
- #include <sys/ioctl.h>
- #include <termio.h>
- #include <signal.h>
- #include <errno.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <fcntl.h>
- #include <varargs.h>
- #include <ctype.h>
- #include <utmp.h>
- #include <getopt.h>
- #include <memory.h>
- #include <sys/file.h>
-
- #ifdef linux
- #include "pathnames.h"
- #include <sys/param.h>
- #define USE_SYSLOG
- #endif
-
- /* If USE_SYSLOG is undefined all diagnostics go directly to /dev/console. */
-
- #ifdef USE_SYSLOG
- #include <syslog.h>
- extern void closelog();
- #endif
-
- /*
- * Some heuristics to find out what environment we are in: if it is not
- * System V, assume it is SunOS 4.
- */
-
- #ifdef LOGIN_PROCESS /* defined in System V utmp.h */
- #define SYSV_STYLE /* select System V style getty */
- #endif
-
- /*
- * Things you may want to modify.
- *
- * If ISSUE is not defined, agetty will never display the contents of the
- * /etc/issue file. You will not want to spit out large "issue" files at the
- * wrong baud rate. Relevant for System V only.
- *
- * You may disagree with the default line-editing etc. characters defined
- * below. Note, however, that DEL cannot be used for interrupt generation
- * and for line editing at the same time.
- */
-
- #ifdef SYSV_STYLE
- #define ISSUE "/etc/issue" /* displayed before the login prompt */
- #include <sys/utsname.h>
- #include <time.h>
- #endif
-
- #define LOGIN " login: " /* login prompt */
-
- /* Some shorthands for control characters. */
-
- #define CTL(x) (x ^ 0100) /* Assumes ASCII dialect */
- #define CR CTL('M') /* carriage return */
- #define NL CTL('J') /* line feed */
- #define BS CTL('H') /* back space */
- #define DEL CTL('?') /* delete */
-
- /* Defaults for line-editing etc. characters; you may want to change this. */
-
- #define DEF_ERASE DEL /* default erase character */
- #define DEF_INTR CTL('C') /* default interrupt character */
- #define DEF_QUIT CTL('\\') /* default quit char */
- #define DEF_KILL CTL('U') /* default kill char */
- #define DEF_EOF CTL('D') /* default EOF char */
- #define DEF_EOL 0
- #define DEF_SWITCH 0 /* default switch char */
-
- /*
- * SunOS 4.1.1 termio is broken. We must use the termios stuff instead,
- * because the termio -> termios translation does not clear the termios
- * CIBAUD bits. Therefore, the tty driver would sometimes report that input
- * baud rate != output baud rate. I did not notice that problem with SunOS
- * 4.1. We will use termios where available, and termio otherwise.
- */
-
- /* linux 0.12 termio is broken too, if we use it c_cc[VERASE] isn't set
- properly, but all is well if we use termios?! */
-
- #ifdef TCGETS
- #undef TCGETA
- #undef TCSETA
- #undef TCSETAW
- #define termio termios
- #define TCGETA TCGETS
- #define TCSETA TCSETS
- #define TCSETAW TCSETSW
- #endif
-
- /*
- * This program tries to not use the standard-i/o library. This keeps the
- * executable small on systems that do not have shared libraries (System V
- * Release <3).
- */
-
- #define BUFSIZ 1024
-
- /*
- * When multiple baud rates are specified on the command line, the first one
- * we will try is the first one specified.
- */
-
- #define FIRST_SPEED 0
-
- /* Storage for command-line options. */
-
- #define MAX_SPEED 10 /* max. nr. of baud rates */
-
- struct options {
- int flags; /* toggle switches, see below */
- int timeout; /* time-out period */
- char *login; /* login program */
- int numspeed; /* number of baud rates to try */
- int speeds[MAX_SPEED]; /* baud rates to be tried */
- char *tty; /* name of tty */
- };
-
- #define F_PARSE (1<<0) /* process modem status messages */
- #define F_ISSUE (1<<1) /* display /etc/issue */
- #define F_RTSCTS (1<<2) /* enable RTS/CTS flow control */
- #define F_LOCAL (1<<3) /* force local */
-
- /* Storage for things detected while the login name was read. */
-
- struct chardata {
- int erase; /* erase character */
- int kill; /* kill character */
- int eol; /* end-of-line character */
- int parity; /* what parity did we see */
- int capslock; /* upper case without lower case */
- };
-
- /* Initial values for the above. */
-
- struct chardata init_chardata = {
- DEF_ERASE, /* default erase character */
- DEF_KILL, /* default kill character */
- 0, /* always filled in at runtime */
- 0, /* space parity */
- 0, /* always filled in at runtime */
- };
-
- #define P_(s) ()
- void parse_args P_((int argc, char **argv, struct options *op));
- void parse_speeds P_((struct options *op, char *arg));
- void update_utmp P_((char *line));
- void open_tty P_((char *tty, struct termio *tp, int local));
- void termio_init P_((struct termio *tp, int speed, int local));
- void auto_baud P_((struct termio *tp));
- void do_prompt P_((struct options *op, struct termio *tp));
- void next_speed P_((struct termio *tp, struct options *op));
- char *get_logname P_((struct options *op, struct chardata *cp, struct termio *tp));
- void termio_final P_((struct options *op, struct termio *tp, struct chardata *cp));
- int caps_lock P_((char *s));
- int bcode P_((char *s));
- void usage P_((void));
- void error P_((int va_alist));
- #undef P_
-
- /* The following is used for understandable diagnostics. */
-
- char *progname;
-
- /* ... */
- #ifdef DEBUGGING
- #define debug(s) fprintf(dbf,s); fflush(dbf)
- FILE *dbf;
- #else
- #define debug(s) /* nothing */
- #endif
-
- int
- main(argc, argv)
- int argc;
- char **argv;
- {
- char *logname; /* login name, given to /bin/login */
- char *get_logname();
- struct chardata chardata; /* set by get_logname() */
- struct termio termio; /* terminal mode bits */
- static struct options options = {
- F_ISSUE, /* show /etc/issue (SYSV_STYLE) */
- 0, /* no timeout */
- _PATH_LOGIN, /* default login program */
- 0, /* no baud rates known yet */
- };
-
- /* The BSD-style init command passes us a useless process name. */
-
- #ifdef SYSV_STYLE
- progname = argv[0];
- #else
- progname = "agetty";
- #endif
-
- #ifdef DEBUGGING
- dbf = fopen("/dev/tty1", "w");
-
- { int i;
-
- for(i = 1; i < argc; i++) {
- debug(argv[i]);
- }
- }
- #endif
-
- /* Parse command-line arguments. */
-
- parse_args(argc, argv, &options);
-
- #ifdef linux
- setsid();
- #endif
-
- /* Update the utmp file. */
-
- #ifdef SYSV_STYLE
- update_utmp(options.tty);
- #endif
-
- /* Open the tty as standard { input, output, error }. */
- open_tty(options.tty, &termio, options.flags & F_LOCAL);
-
- #ifdef linux
- {
- int iv;
-
- iv = getpid();
- (void) ioctl(0, TIOCSPGRP, &iv);
- }
- #endif
- /* Initialize the termio settings (raw mode, eight-bit, blocking i/o). */
-
- termio_init(&termio, options.speeds[FIRST_SPEED], options.flags & F_LOCAL);
-
- /* Optionally detect the baud rate from the modem status message. */
-
- if (options.flags & F_PARSE)
- auto_baud(&termio);
-
- /* Set the optional timer. */
-
- if (options.timeout)
- (void) alarm((unsigned) options.timeout);
-
- /* Read the login name. */
-
- while ((logname = get_logname(&options, &chardata, &termio)) == 0)
- next_speed(&termio, &options);
-
- /* Disable timer. */
-
- if (options.timeout)
- (void) alarm(0);
-
- /* Finalize the termio settings. */
-
- termio_final(&options, &termio, &chardata);
-
- /* Now the newline character should be properly written. */
-
- (void) write(1, "\n", 1);
-
- /* Let the login program take care of password validation. */
-
- (void) execl(options.login, options.login, "--", logname, (char *) 0);
- error("%s: can't exec %s: %m", options.tty, options.login);
- exit(0); /* quiet GCC */
- }
-
- /* parse-args - parse command-line arguments */
-
- void
- parse_args(argc, argv, op)
- int argc;
- char **argv;
- struct options *op;
- {
- extern char *optarg; /* getopt */
- extern int optind; /* getopt */
- int c;
-
- while (isascii(c = getopt(argc, argv, "Lhil:mt:"))) {
- switch (c) {
- case 'L': /* force local */
- op->flags |= F_LOCAL;
- break;
- case 'h': /* enable h/w flow control */
- op->flags |= F_RTSCTS;
- break;
- case 'i': /* do not show /etc/issue */
- op->flags &= ~F_ISSUE;
- break;
- case 'l':
- op->login = optarg; /* non-default login program */
- break;
- case 'm': /* parse modem status message */
- op->flags |= F_PARSE;
- break;
- case 't': /* time out */
- if ((op->timeout = atoi(optarg)) <= 0)
- error("bad timeout value: %s", optarg);
- break;
- default:
- usage();
- }
- }
- debug("after getopt loop\n");
- if (argc != optind + 2) /* check parameter count */
- usage();
-
- /* we loosen up a bit and accept both "baudrate tty" and "tty baudrate" */
- if('0' <= argv[optind][0] && argv[optind][0] <= '9') {
- /* a number first, assume it's a speed (BSD style) */
- parse_speeds(op, argv[optind++]); /* baud rate(s) */
- op->tty = argv[optind]; /* tty name */
- } else {
- op->tty = argv[optind++]; /* tty name */
- parse_speeds(op, argv[optind]); /* baud rate(s) */
- }
-
- debug("exiting parseargs\n");
- }
-
- /* parse_speeds - parse alternate baud rates */
-
- void
- parse_speeds(op, arg)
- struct options *op;
- char *arg;
- {
- char *strtok();
- char *cp;
-
- debug("entered parse_speeds\n");
- for (cp = strtok(arg, ","); cp != 0; cp = strtok((char *) 0, ",")) {
- if ((op->speeds[op->numspeed++] = bcode(cp)) <= 0)
- error("bad speed: %s", cp);
- if (op->numspeed > MAX_SPEED)
- error("too many alternate speeds");
- }
- debug("exiting parsespeeds\n");
- }
-
- #ifdef SYSV_STYLE
-
- /* update_utmp - update our utmp entry */
- void
- update_utmp(line)
- char *line;
- {
- struct utmp ut;
- long ut_size = sizeof(ut); /* avoid nonsense */
- int ut_fd;
- int mypid = getpid();
- long time();
- long lseek();
- char *strncpy();
-
- /*
- * The utmp file holds miscellaneous information about things started by
- * /etc/init and other system-related events. Our purpose is to update
- * the utmp entry for the current process, in particular the process type
- * and the tty line we are listening to. Return successfully only if the
- * utmp file can be opened for update, and if we are able to find our
- * entry in the utmp file.
- */
-
- #ifdef linux
- utmpname(_PATH_UTMP);
- memset(&ut, 0, sizeof(ut));
- (void) strncpy(ut.ut_user, "LOGIN", sizeof(ut.ut_user));
- (void) strncpy(ut.ut_line, line, sizeof(ut.ut_line));
- (void) strncpy(ut.ut_id, line + 3, sizeof(ut.ut_id));
- (void) time(&ut.ut_time);
- ut.ut_type = LOGIN_PROCESS;
- ut.ut_pid = mypid;
-
- pututline(&ut);
- endutent();
-
- if((ut_fd = open(_PATH_WTMP, O_APPEND|O_WRONLY)) >= 0) {
- flock(ut_fd, LOCK_EX);
- write(ut_fd, &ut, sizeof(ut));
- flock(ut_fd, LOCK_UN);
- close(ut_fd);
- }
- #else
- if ((ut_fd = open(UTMP_FILE, 2)) < 0) {
- error("%s: open for update: %m", UTMP_FILE);
- } else {
- while (read(ut_fd, (char *) &ut, sizeof(ut)) == sizeof(ut)) {
- if (ut.ut_type == INIT_PROCESS && ut.ut_pid == mypid) {
- ut.ut_type = LOGIN_PROCESS;
- ut.ut_time = time((long *) 0);
- (void) strncpy(ut.ut_name, "LOGIN", sizeof(ut.ut_name));
- (void) strncpy(ut.ut_line, line, sizeof(ut.ut_line));
- (void) lseek(ut_fd, -ut_size, 1);
- (void) write(ut_fd, (char *) &ut, sizeof(ut));
- (void) close(ut_fd);
- return;
- }
- }
- error("%s: no utmp entry", line);
- }
- #endif /* linux */
- }
-
- #endif
-
- /* open_tty - set up tty as standard { input, output, error } */
- void
- open_tty(tty, tp, local)
- char *tty;
- struct termio *tp;
- int local;
- {
- /* Get rid of the present standard { output, error} if any. */
-
- (void) close(1);
- (void) close(2);
- errno = 0; /* ignore above errors */
-
- /* Set up new standard input, unless we are given an already opened port. */
-
- if (strcmp(tty, "-")) {
- struct stat st;
-
- /* Sanity checks... */
-
- if (chdir("/dev"))
- error("/dev: chdir() failed: %m");
- if (stat(tty, &st) < 0)
- error("/dev/%s: %m", tty);
- if ((st.st_mode & S_IFMT) != S_IFCHR)
- error("/dev/%s: not a character device", tty);
-
- /* Open the tty as standard input. */
-
- (void) close(0);
- errno = 0; /* ignore close(2) errors */
-
- if (open(tty, (local ? O_RDWR|O_NONBLOCK : O_RDWR), 0) != 0)
- error("/dev/%s: cannot open as standard input: %m", tty);
-
- } else {
-
- /*
- * Standard input should already be connected to an open port. Make
- * sure it is open for read/write.
- */
-
- if ((fcntl(0, F_GETFL, 0) & O_RDWR) != O_RDWR)
- error("%s: not open for read/write", tty);
- }
-
- /* Set up standard output and standard error file descriptors. */
-
- if (dup(0) != 1 || dup(0) != 2) /* set up stdout and stderr */
- error("%s: dup problem: %m", tty); /* we have a problem */
-
- /*
- * The following ioctl will fail if stdin is not a tty, but also when
- * there is noise on the modem control lines. In the latter case, the
- * common course of action is (1) fix your cables (2) give the modem more
- * time to properly reset after hanging up. SunOS users can achieve (2)
- * by patching the SunOS kernel variable "zsadtrlow" to a larger value;
- * 5 seconds seems to be a good value.
- */
-
- if (ioctl(0, TCGETA, tp) < 0)
- error("%s: ioctl: %m", tty);
-
- /*
- * It seems to be a terminal. Set proper protections and ownership. Mode
- * 0622 is suitable for SYSV <4 because /bin/login does not change
- * protections. SunOS 4 login will change the protections to 0620 (write
- * access for group tty) after the login has succeeded.
- */
-
- (void) chown(tty, 0, 0); /* root, sys */
- (void) chmod(tty, 0622); /* crw--w--w- */
- errno = 0; /* ignore above errors */
- }
-
- /* termio_init - initialize termio settings */
-
- char gbuf[1024];
- char area[1024];
-
- void
- termio_init(tp, speed, local)
- struct termio *tp;
- int speed;
- int local;
- {
-
- /*
- * Initial termio settings: 8-bit characters, raw-mode, blocking i/o.
- * Special characters are set after we have read the login name; all
- * reads will be done in raw mode anyway. Errors will be dealt with
- * lateron.
- */
- #ifdef linux
- /* flush input and output queues, important for modems! */
- (void) ioctl(0, TCFLSH, 2);
- #endif
-
- tp->c_cflag = CS8 | HUPCL | CREAD | speed;
- if (local) {
- tp->c_cflag |= CLOCAL;
- }
-
- tp->c_iflag = tp->c_lflag = tp->c_oflag = tp->c_line = 0;
- tp->c_cc[VMIN] = 1;
- tp->c_cc[VTIME] = 0;
- (void) ioctl(0, TCSETA, tp);
- if (local) {
- (void) fcntl(0, F_SETFL, fcntl(0, F_GETFL, 0) & ~O_NDELAY);
- }
- debug("term_io 2\n");
- }
-
- /* auto_baud - extract baud rate from modem status message */
- void
- auto_baud(tp)
- struct termio *tp;
- {
- int speed;
- int vmin;
- unsigned iflag;
- char buf[BUFSIZ];
- char *bp;
- int nread;
-
- /*
- * This works only if the modem produces its status code AFTER raising
- * the DCD line, and if the computer is fast enough to set the proper
- * baud rate before the message has gone by. We expect a message of the
- * following format:
- *
- * <junk><number><junk>
- *
- * The number is interpreted as the baud rate of the incoming call. If the
- * modem does not tell us the baud rate within one second, we will keep
- * using the current baud rate. It is advisable to enable BREAK
- * processing (comma-separated list of baud rates) if the processing of
- * modem status messages is enabled.
- */
-
- /*
- * Use 7-bit characters, don't block if input queue is empty. Errors will
- * be dealt with lateron.
- */
-
- iflag = tp->c_iflag;
- tp->c_iflag |= ISTRIP; /* enable 8th-bit stripping */
- vmin = tp->c_cc[VMIN];
- tp->c_cc[VMIN] = 0; /* don't block if queue empty */
- (void) ioctl(0, TCSETA, tp);
-
- /*
- * Wait for a while, then read everything the modem has said so far and
- * try to extract the speed of the dial-in call.
- */
-
- (void) sleep(1);
- if ((nread = read(0, buf, sizeof(buf) - 1)) > 0) {
- buf[nread] = '\0';
- for (bp = buf; bp < buf + nread; bp++) {
- if (isascii(*bp) && isdigit(*bp)) {
- if (speed = bcode(bp)) {
- tp->c_cflag &= ~CBAUD;
- tp->c_cflag |= speed;
- }
- break;
- }
- }
- }
- /* Restore terminal settings. Errors will be dealt with lateron. */
-
- tp->c_iflag = iflag;
- tp->c_cc[VMIN] = vmin;
- (void) ioctl(0, TCSETA, tp);
- }
-
- /* do_prompt - show login prompt, optionally preceded by /etc/issue contents */
- void
- do_prompt(op, tp)
- struct options *op;
- struct termio *tp;
- {
- #ifdef ISSUE
- FILE *fd;
- int oflag;
- char c;
- struct utsname uts;
-
- (void) uname(&uts);
- #endif
-
- (void) write(1, "\r\n", 2); /* start a new line */
- #ifdef ISSUE /* optional: show /etc/issue */
- if ((op->flags & F_ISSUE) && (fd = fopen(ISSUE, "r"))) {
- oflag = tp->c_oflag; /* save current setting */
- tp->c_oflag |= (ONLCR | OPOST); /* map NL in output to CR-NL */
- (void) ioctl(0, TCSETAW, tp);
-
-
- while ((c = getc(fd)) != EOF)
- {
- if (c == '\\')
- {
- c = getc(fd);
-
- switch (c)
- {
- case 's':
- (void) printf ("%s", uts.sysname);
- break;
-
- case 'n':
- (void) printf ("%s", uts.nodename);
- break;
-
- case 'r':
- (void) printf ("%s", uts.release);
- break;
-
- case 'v':
- (void) printf ("%s", uts.version);
- break;
-
- case 'm':
- (void) printf ("%s", uts.machine);
- break;
-
- case 'o':
- (void) printf ("%s", uts.domainname);
- break;
-
- case 'd':
- case 't':
- {
- char *weekday[] = { "Sun", "Mon", "Tue", "Wed", "Thu",
- "Fri", "Sat" };
- char *month[] = { "Jan", "Feb", "Mar", "Apr", "May",
- "Jun", "Jul", "Aug", "Sep", "Oct",
- "Nov", "Dec" };
- time_t now;
- struct tm *tm;
-
- (void) time (&now);
- tm = localtime(&now);
-
- if (c == 'd')
- (void) printf ("%s %s %d %d",
- weekday[tm->tm_wday], month[tm->tm_mon],
- tm->tm_mday,
- tm->tm_year < 70 ? tm->tm_year + 2000 :
- tm->tm_year + 1900);
- else
- (void) printf ("%02d:%02d:%02d",
- tm->tm_hour, tm->tm_min, tm->tm_sec);
-
- break;
- }
-
- case 'l':
- (void) printf ("%s", op->tty);
- break;
-
- case 'b':
- {
- char *zpeedz[] = { "0", "50", "75", "110", "134.5",
- "150", "200", "300", "600", "1200",
- "1800", "2400", "4800", "9600",
- "19200", "38400" };
-
- (void) printf ("%s", zpeedz[tp->c_cflag & CBAUD]);
- break;
- }
-
- default:
- (void) putchar(c);
- }
- }
- else
- (void) putchar(c);
- }
- fflush(stdout);
-
- tp->c_oflag = oflag; /* restore settings */
- (void) ioctl(0, TCSETAW, tp); /* wait till output is gone */
- (void) fclose(fd);
- }
- #endif
- #ifdef linux
- {
- char hn[MAXHOSTNAMELEN+1];
-
- (void) gethostname(hn, MAXHOSTNAMELEN);
- write(1, hn, strlen(hn));
- }
- #endif
- (void) write(1, LOGIN, sizeof(LOGIN) - 1); /* always show login prompt */
- }
-
- /* next_speed - select next baud rate */
- void
- next_speed(tp, op)
- struct termio *tp;
- struct options *op;
- {
- static int baud_index = FIRST_SPEED;/* current speed index */
-
- baud_index = (baud_index + 1) % op->numspeed;
- tp->c_cflag &= ~CBAUD;
- tp->c_cflag |= op->speeds[baud_index];
- (void) ioctl(0, TCSETA, tp);
- }
-
- /* get_logname - get user name, establish parity, speed, erase, kill, eol */
-
- char *get_logname(op, cp, tp)
- struct options *op;
- struct chardata *cp;
- struct termio *tp;
- {
- char logname[BUFSIZ];
- char *bp;
- char c; /* input character, full eight bits */
- char ascval; /* low 7 bits of input character */
- int bits; /* # of "1" bits per character */
- int mask; /* mask with 1 bit up */
- static char *erase[] = { /* backspace-space-backspace */
- "\010\040\010", /* space parity */
- "\010\040\010", /* odd parity */
- "\210\240\210", /* even parity */
- "\210\240\210", /* no parity */
- };
-
- /* Initialize kill, erase, parity etc. (also after switching speeds). */
-
- *cp = init_chardata;
-
- /* Flush pending input (esp. after parsing or switching the baud rate). */
-
- (void) sleep(1);
- (void) ioctl(0, TCFLSH, (struct termio *) 0);
-
- /* Prompt for and read a login name. */
-
- for (*logname = 0; *logname == 0; /* void */ ) {
-
- /* Write issue file and prompt, with "parity" bit == 0. */
-
- do_prompt(op, tp);
-
- /* Read name, watch for break, parity, erase, kill, end-of-line. */
-
- for (bp = logname, cp->eol = 0; cp->eol == 0; /* void */ ) {
-
- /* Do not report trivial EINTR/EIO errors. */
-
- if (read(0, &c, 1) < 1) {
- if (errno == EINTR || errno == EIO)
- exit(0);
- error("%s: read: %m", op->tty);
- }
- /* Do BREAK handling elsewhere. */
-
- if ((c == 0) && op->numspeed > 1)
- return (0);
-
- /* Do parity bit handling. */
-
- if (c != (ascval = (c & 0177))) { /* "parity" bit on ? */
- for (bits = 1, mask = 1; mask & 0177; mask <<= 1)
- if (mask & ascval)
- bits++; /* count "1" bits */
- cp->parity |= ((bits & 1) ? 1 : 2);
- }
- /* Do erase, kill and end-of-line processing. */
-
- switch (ascval) {
- case CR:
- case NL:
- *bp = 0; /* terminate logname */
- cp->eol = ascval; /* set end-of-line char */
- break;
- case BS:
- case DEL:
- case '#':
- cp->erase = ascval; /* set erase character */
- if (bp > logname) {
- (void) write(1, erase[cp->parity], 3);
- bp--;
- }
- break;
- case CTL('U'):
- case '@':
- cp->kill = ascval; /* set kill character */
- while (bp > logname) {
- (void) write(1, erase[cp->parity], 3);
- bp--;
- }
- break;
- case CTL('D'):
- exit(0);
- default:
- if (!isascii(ascval) || !isprint(ascval)) {
- /* ignore garbage characters */ ;
- } else if (bp - logname >= sizeof(logname) - 1) {
- error("%s: input overrun", op->tty);
- } else {
- (void) write(1, &c, 1); /* echo the character */
- *bp++ = ascval; /* and store it */
- }
- break;
- }
- }
- }
- /* Handle names with upper case and no lower case. */
-
- if (cp->capslock = caps_lock(logname)) {
- for (bp = logname; *bp; bp++)
- if (isupper(*bp))
- *bp = tolower(*bp); /* map name to lower case */
- }
- return (logname);
- }
-
- /* termio_final - set the final tty mode bits */
- void
- termio_final(op, tp, cp)
- struct options *op;
- struct termio *tp;
- struct chardata *cp;
- {
- /* General terminal-independent stuff. */
-
- tp->c_iflag |= IXON | IXOFF; /* 2-way flow control */
- tp->c_lflag |= ICANON | ISIG | ECHO | ECHOE | ECHOK| ECHOKE;
- /* no longer| ECHOCTL | ECHOPRT*/
- tp->c_oflag |= OPOST;
- /* tp->c_cflag = 0; */
- tp->c_cc[VINTR] = DEF_INTR; /* default interrupt */
- tp->c_cc[VQUIT] = DEF_QUIT; /* default quit */
- tp->c_cc[VEOF] = DEF_EOF; /* default EOF character */
- tp->c_cc[VEOL] = DEF_EOL;
- #ifdef linux
- tp->c_cc[VSWTC] = DEF_SWITCH; /* default switch character */
- #else
- tp->c_cc[VSWTCH] = DEF_SWITCH; /* default switch character */
- #endif
-
- /* Account for special characters seen in input. */
-
- if (cp->eol == CR) {
- tp->c_iflag |= ICRNL; /* map CR in input to NL */
- tp->c_oflag |= ONLCR; /* map NL in output to CR-NL */
- }
- tp->c_cc[VERASE] = cp->erase; /* set erase character */
- tp->c_cc[VKILL] = cp->kill; /* set kill character */
-
- /* Account for the presence or absence of parity bits in input. */
-
- switch (cp->parity) {
- case 0: /* space (always 0) parity */
- break;
- case 1: /* odd parity */
- tp->c_cflag |= PARODD;
- /* FALLTHROUGH */
- case 2: /* even parity */
- tp->c_cflag |= PARENB;
- tp->c_iflag |= INPCK | ISTRIP;
- /* FALLTHROUGH */
- case (1 | 2): /* no parity bit */
- tp->c_cflag &= ~CSIZE;
- tp->c_cflag |= CS7;
- break;
- }
- /* Account for upper case without lower case. */
-
- if (cp->capslock) {
- tp->c_iflag |= IUCLC;
- tp->c_lflag |= XCASE;
- tp->c_oflag |= OLCUC;
- }
- /* Optionally enable hardware flow control */
-
- #ifdef CRTSCTS
- if (op->flags & F_RTSCTS)
- tp->c_cflag |= CRTSCTS;
- #endif
-
- /* Finally, make the new settings effective */
-
- if (ioctl(0, TCSETA, tp) < 0)
- error("%s: ioctl: TCSETA: %m", op->tty);
- }
-
- /* caps_lock - string contains upper case without lower case */
- int
- caps_lock(s)
- char *s;
- {
- int capslock;
-
- for (capslock = 0; *s; s++) {
- if (islower(*s))
- return (0);
- if (capslock == 0)
- capslock = isupper(*s);
- }
- return (capslock);
- }
-
- /* bcode - convert speed string to speed code; return 0 on failure */
- int
- bcode(s)
- char *s;
- {
- struct Speedtab {
- long speed;
- int code;
- };
- static struct Speedtab speedtab[] = {
- 50, B50,
- 75, B75,
- 110, B110,
- 134, B134,
- 150, B150,
- 200, B200,
- 300, B300,
- 600, B600,
- 1200, B1200,
- 1800, B1800,
- 2400, B2400,
- 4800, B4800,
- 9600, B9600,
- #ifdef B19200
- 19200, B19200,
- #endif
- #ifdef B38400
- 38400, B38400,
- #endif
- #ifdef EXTA
- 19200, EXTA,
- #endif
- #ifdef EXTB
- 38400, EXTB,
- #endif
- 0, 0,
- };
- struct Speedtab *sp;
- long speed = atol(s);
-
- for (sp = speedtab; sp->speed; sp++)
- if (sp->speed == speed)
- return (sp->code);
- return (0);
- }
-
- /* usage - explain */
-
- void
- usage()
- {
- #if defined(SYSV_STYLE) && !defined(linux)
- static char msg[] =
- "[-i] [-l login_program] [-m] [-t timeout] line baud_rate,...";
- #else
- static char msg[] =
- "[-h] [-l login_program] [-m] [-t timeout] baud_rate,... line";
- #endif
-
- error("usage: %s %s", progname, msg);
- }
-
- /* error - report errors to console or syslog; only understands %s and %m */
-
- #define str2cpy(b,s1,s2) strcat(strcpy(b,s1),s2)
-
- /* VARARGS */
- void
- error(va_alist)
- va_dcl
- {
- va_list ap;
- char *fmt;
- #ifndef USE_SYSLOG
- int fd;
- #endif
- char buf[BUFSIZ];
- char *bp;
-
- char *strcpy();
- char *strcat();
-
- /*
- * If the diagnostic is reported via syslog(3), the process name is
- * automatically prepended to the message. If we write directly to
- * /dev/console, we must prepend the process name ourselves.
- */
-
- #ifdef USE_SYSLOG
- buf[0] = '\0';
- bp = buf;
- #else
- (void) str2cpy(buf, progname, ": ");
- bp = buf + strlen(buf);
- #endif
-
- /*
- * %s expansion is done by hand. On a System V Release 2 system without
- * shared libraries and without syslog(3), linking with the the stdio
- * library would make the program three times as big...
- *
- * %m expansion is done here as well. Too bad syslog(3) does not have a
- * vsprintf() like interface.
- */
-
- va_start(ap);
- fmt = va_arg(ap, char *);
- while (*fmt) {
- if (strncmp(fmt, "%s", 2) == 0) {
- (void) strcpy(bp, va_arg(ap, char *));
- bp += strlen(bp);
- fmt += 2;
- } else if (strncmp(fmt, "%m", 2) == 0) {
- (void) strcpy(bp, sys_errlist[errno]);
- bp += strlen(bp);
- fmt += 2;
- } else {
- *bp++ = *fmt++;
- }
- }
- *bp = 0;
- va_end(ap);
-
- /*
- * Write the diagnostic directly to /dev/console if we do not use the
- * syslog(3) facility.
- */
-
- #ifdef USE_SYSLOG
- (void) openlog(progname, LOG_PID, LOG_AUTH);
- (void) syslog(LOG_ERR, "%s", buf);
- closelog();
- #else
- /* Terminate with CR-LF since the console mode is unknown. */
- (void) strcat(bp, "\r\n");
- if ((fd = open("/dev/console", 1)) >= 0) {
- (void) write(fd, buf, strlen(buf));
- (void) close(fd);
- }
- #endif
- (void) sleep((unsigned) 10); /* be kind to init(8) */
- exit(1);
- }
-