- Use the initial terminal mode instead of the current mode
as the source of defaults for terminal device parameters. - Do duplucate code reduction and simplification enabled by the above. Reviewed by: green MFC after: 1 month
This commit is contained in:
yar
parent
9c47eda3ce
commit
1b73e33c70
@ -59,26 +59,26 @@ struct gettystrs gettystrs[] = {
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{ "cl" }, /* screen clear characters */
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{ "im" }, /* initial message */
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{ "lm", loginmsg }, /* login message */
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{ "er", &tmode.c_cc[VERASE] }, /* erase character */
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{ "kl", &tmode.c_cc[VKILL] }, /* kill character */
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{ "et", &tmode.c_cc[VEOF] }, /* eof chatacter (eot) */
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{ "er", &omode.c_cc[VERASE] }, /* erase character */
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{ "kl", &omode.c_cc[VKILL] }, /* kill character */
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{ "et", &omode.c_cc[VEOF] }, /* eof chatacter (eot) */
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{ "pc", nullstr }, /* pad character */
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{ "tt" }, /* terminal type */
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{ "ev" }, /* enviroment */
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{ "lo", loginprg }, /* login program */
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{ "hn", hostname }, /* host name */
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{ "he" }, /* host name edit */
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{ "in", &tmode.c_cc[VINTR] }, /* interrupt char */
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{ "qu", &tmode.c_cc[VQUIT] }, /* quit char */
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{ "xn", &tmode.c_cc[VSTART] }, /* XON (start) char */
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{ "xf", &tmode.c_cc[VSTOP] }, /* XOFF (stop) char */
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{ "bk", &tmode.c_cc[VEOL] }, /* brk char (alt \n) */
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{ "su", &tmode.c_cc[VSUSP] }, /* suspend char */
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{ "ds", &tmode.c_cc[VDSUSP] }, /* delayed suspend */
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{ "rp", &tmode.c_cc[VREPRINT] },/* reprint char */
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{ "fl", &tmode.c_cc[VDISCARD] },/* flush output */
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{ "we", &tmode.c_cc[VWERASE] }, /* word erase */
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{ "ln", &tmode.c_cc[VLNEXT] }, /* literal next */
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{ "in", &omode.c_cc[VINTR] }, /* interrupt char */
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{ "qu", &omode.c_cc[VQUIT] }, /* quit char */
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{ "xn", &omode.c_cc[VSTART] }, /* XON (start) char */
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{ "xf", &omode.c_cc[VSTOP] }, /* XOFF (stop) char */
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{ "bk", &omode.c_cc[VEOL] }, /* brk char (alt \n) */
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{ "su", &omode.c_cc[VSUSP] }, /* suspend char */
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{ "ds", &omode.c_cc[VDSUSP] }, /* delayed suspend */
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{ "rp", &omode.c_cc[VREPRINT] },/* reprint char */
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{ "fl", &omode.c_cc[VDISCARD] },/* flush output */
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{ "we", &omode.c_cc[VWERASE] }, /* word erase */
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{ "ln", &omode.c_cc[VLNEXT] }, /* literal next */
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{ "Lo" }, /* locale for strftime() */
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{ "pp" }, /* ppp login program */
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{ "if" }, /* sysv-like 'issue' filename */
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@ -90,7 +90,10 @@ static const char rcsid[] =
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#define PPP_LCP_HI 0xc0 /* LCP protocol - high byte */
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#define PPP_LCP_LOW 0x21 /* LCP protocol - low byte */
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struct termios tmode, omode;
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/* original mode; flags've been reset using values from <sys/ttydefaults.h> */
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struct termios omode;
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/* current mode */
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struct termios tmode;
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int crmod, digit, lower, upper;
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@ -104,6 +107,7 @@ char ttyn[32];
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char defent[TABBUFSIZ];
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char tabent[TABBUFSIZ];
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const char *tname;
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char *env[128];
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@ -132,8 +136,9 @@ char partab[] = {
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#define puts Gputs
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static void defttymode();
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static void dingdong(int);
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static void dogettytab(const char *);
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static void dogettytab(void);
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static int getname(void);
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static void interrupt(int);
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static void oflush(void);
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@ -145,7 +150,6 @@ static void puts(const char *);
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static void timeoverrun(int);
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static char *getline(int);
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static void setttymode(int);
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static void setdefttymode(void);
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static int opentty(const char *, int);
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jmp_buf timeout;
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@ -180,7 +184,6 @@ int
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main(int argc, char *argv[])
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{
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extern char **environ;
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const char *tname;
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int first_sleep = 1, first_time = 1;
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struct rlimit limit;
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int rval;
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@ -215,10 +218,9 @@ main(int argc, char *argv[])
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* that the file descriptors are already set up for us.
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* J. Gettys - MIT Project Athena.
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*/
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if (argc <= 2 || strcmp(argv[2], "-") == 0) {
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if (argc <= 2 || strcmp(argv[2], "-") == 0)
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strcpy(ttyn, ttyname(STDIN_FILENO));
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dogettytab(tname);
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} else {
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else {
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strcpy(ttyn, dev);
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strncat(ttyn, argv[2], sizeof(ttyn)-sizeof(dev));
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if (strcmp(argv[0], "+") != 0) {
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@ -226,13 +228,25 @@ main(int argc, char *argv[])
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chmod(ttyn, 0600);
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revoke(ttyn);
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/* Init modem sequence has been specified
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/*
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* Do the first scan through gettytab.
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* Terminal mode parameters will be wrong until
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* defttymode() called, but they're irrelevant for
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* the initial setup of the terminal device.
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*/
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if (IC) {
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dogettytab();
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/*
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* Init or answer modem sequence has been specified.
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*/
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if (IC || AC) {
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if (!opentty(ttyn, O_RDWR|O_NONBLOCK))
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exit(1);
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dogettytab(tname);
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setdefttymode();
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defttymode();
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setttymode(1);
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}
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if (IC) {
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if (getty_chat(IC, CT, DC) > 0) {
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syslog(LOG_ERR, "modem init problem on %s", ttyn);
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(void)tcsetattr(STDIN_FILENO, TCSANOW, &tmode);
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@ -244,10 +258,6 @@ main(int argc, char *argv[])
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int i, rfds;
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struct timeval to;
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if (!opentty(ttyn, O_RDWR|O_NONBLOCK))
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exit(1);
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dogettytab(tname);
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setdefttymode();
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rfds = 1 << 0; /* FD_SET */
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to.tv_sec = RT;
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to.tv_usec = 0;
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@ -269,30 +279,11 @@ main(int argc, char *argv[])
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} else { /* maybe blocking open */
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if (!opentty(ttyn, O_RDWR | (NC ? O_NONBLOCK : 0 )))
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exit(1);
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dogettytab(tname);
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}
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}
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}
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/* Start with default tty settings */
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if (tcgetattr(STDIN_FILENO, &tmode) < 0) {
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syslog(LOG_ERR, "tcgetattr %s: %m", ttyn);
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exit(1);
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}
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/*
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* Don't rely on the driver too much, and initialize crucial
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* things according to <sys/ttydefaults.h>. Avoid clobbering
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* the c_cc[] settings however, the console drivers might wish
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* to leave their idea of the preferred VERASE key value
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* there.
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*/
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tmode.c_iflag = TTYDEF_IFLAG;
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tmode.c_oflag = TTYDEF_OFLAG;
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tmode.c_lflag = TTYDEF_LFLAG;
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tmode.c_cflag = TTYDEF_CFLAG;
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tmode.c_cflag |= (NC ? CLOCAL : 0);
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omode = tmode;
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defttymode();
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for (;;) {
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/*
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@ -309,12 +300,12 @@ main(int argc, char *argv[])
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setttymode(0);
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if (AB) {
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tname = autobaud();
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dogettytab(tname);
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dogettytab();
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continue;
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}
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if (PS) {
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tname = portselector();
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dogettytab(tname);
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dogettytab();
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continue;
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}
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if (CL && *CL)
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@ -428,7 +419,7 @@ main(int argc, char *argv[])
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signal(SIGINT, SIG_IGN);
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if (NX && *NX) {
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tname = NX;
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dogettytab(tname);
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dogettytab();
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}
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}
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}
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@ -470,18 +461,30 @@ opentty(const char *tty, int flags)
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}
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static void
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setdefttymode(void)
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defttymode()
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{
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/* Start with default tty settings. */
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if (tcgetattr(STDIN_FILENO, &tmode) < 0) {
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syslog(LOG_ERR, "tcgetattr %s: %m", ttyn);
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exit(1);
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}
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omode = tmode; /* fill c_cc for dogettytab() */
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dogettytab();
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/*
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* Don't rely on the driver too much, and initialize crucial
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* things according to <sys/ttydefaults.h>. Avoid clobbering
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* the c_cc[] settings however, the console drivers might wish
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* to leave their idea of the preferred VERASE key value
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* there.
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*/
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tmode.c_iflag = TTYDEF_IFLAG;
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tmode.c_oflag = TTYDEF_OFLAG;
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tmode.c_lflag = TTYDEF_LFLAG;
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tmode.c_cflag = TTYDEF_CFLAG;
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omode = tmode;
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setttymode(1);
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tmode.c_oflag = TTYDEF_OFLAG;
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tmode.c_lflag = TTYDEF_LFLAG;
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tmode.c_cflag = TTYDEF_CFLAG;
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if (NC)
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tmode.c_cflag |= CLOCAL;
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omode = tmode;
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}
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static void
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@ -801,11 +804,10 @@ putf(const char *cp)
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* Read a gettytab database entry and perform necessary quirks.
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*/
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static void
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dogettytab(const char *tname)
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dogettytab()
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{
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struct termios backupmode;
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/* Read the database entry */
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/* Read the database entry. */
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gettable(tname, tabent);
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/*
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@ -816,17 +818,6 @@ dogettytab(const char *tname)
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if (OPset || EPset || APset || NPset)
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OPset = EPset = APset = NPset = 1;
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/*
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* Fill in default values for unset capabilities. Since the
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* defaults are derived from the actual tty mode, save any
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* changes to the tmode and fetch it temporarily for
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* setdefaults() to use.
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*/
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backupmode = tmode;
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if (tcgetattr(STDIN_FILENO, &tmode) < 0) {
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syslog(LOG_ERR, "tcgetattr %s: %m", ttyn);
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exit(1);
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}
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/* Fill in default values for unset capabilities. */
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setdefaults();
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tmode = backupmode;
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}
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