*
* Please send all bug reports, requests for information, etc. to:
*
+ * Al Longyear (longyear@netcom.com)
+ * (I was the last person to change this code.)
+ *
+ * The original author is:
+ *
* Karl Fox <karl@MorningStar.Com>
* Morning Star Technologies, Inc.
* 1760 Zollinger Road
* (614)451-1883
*/
-/*static char sccs_id[] = "@(#)chat.c 1.7";*/
-static char rcsid[] = "$Id: chat.c,v 1.1 1994/05/20 05:32:16 paulus Exp $";
+static char rcsid[] = "$Id: chat.c,v 1.4 1994/05/30 00:30:37 paulus Exp $";
#include <stdio.h>
#include <fcntl.h>
#include <signal.h>
#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
-#include <varargs.h>
#include <syslog.h>
#ifndef TERMIO
+#undef TERMIOS
#define TERMIOS
#endif
# endif
#endif
-#ifdef ultrix
-#define SIGHAND_TYPE int (*)()
-#endif
-
#ifdef TERMIO
#include <termio.h>
#endif
#define SIGTYPE void
#endif
+#ifdef __STDC__
+#undef __P
+#define __P(x) x
+#else
+#define __P(x) ()
+#define const
+#endif
+
/*************** Micro getopt() *********************************************/
#define OPTION(c,v) (_O&2&&**v?*(*v)++:!c||_O&4?0:(!(_O&1)&& \
(--c,++v),_O=4,c&&**v=='-'&&v[0][1]?*++*v=='-'\
char *program_name;
-extern char *strcpy(), *strcat(), *malloc();
-extern int strlen();
-#define copyof(s) ((s) ? strcpy(malloc(strlen(s) + 1), s) : (s))
-
#ifndef LOCK_DIR
# ifdef __NetBSD__
# define PIDSTRING
int verbose = 0;
int quiet = 0;
char *lock_file = (char *)0;
+char *chat_file = (char *)0;
int timeout = DEFAULT_CHAT_TIMEOUT;
int have_tty_parameters = 0;
fail_buffer[50];
int n_aborts = 0, abort_next = 0, timeout_next = 0;
+void *dup_mem __P((void *b, size_t c));
+void *copy_of __P((char *s));
+void usage __P((void));
+void logf __P((const char *str));
+void logflush __P((void));
+void fatal __P((const char *msg));
+void sysfatal __P((const char *msg));
+SIGTYPE sigalrm __P((int signo));
+SIGTYPE sigint __P((int signo));
+SIGTYPE sigterm __P((int signo));
+SIGTYPE sighup __P((int signo));
+void unalarm __P((void));
+void init __P((void));
+void set_tty_parameters __P((void));
+void break_sequence __P((void));
+void terminate __P((int status));
+void do_file __P((char *chat_file));
+void lock __P((void));
+void delay __P((void));
+int get_string __P((register char *string));
+int put_string __P((register char *s));
+int write_char __P((int c));
+int put_char __P((char c));
+int get_char __P((void));
+void chat_send __P((register char *s));
+char *character __P((char c));
+void chat_expect __P((register char *s));
+char *clean __P((register char *s, int sending));
+void unlock __P((void));
+void lock __P((void));
+void break_sequence __P((void));
+void terminate __P((int status));
+void die __P((void));
+
+void *dup_mem(b, c)
+void *b;
+size_t c;
+ {
+ void *ans = malloc (c);
+ if (!ans)
+ fatal ("memory error!\n");
+ memcpy (ans, b, c);
+ return ans;
+ }
+
+void *copy_of (s)
+char *s;
+ {
+ return dup_mem (s, strlen (s) + 1);
+ }
+
/*
- * chat [ -v ] [ -t timeout ] [ -l lock-file ] \
+ * chat [ -v ] [ -t timeout ] [ -l lock-file ] [ -f chat-file ] \
* [...[[expect[-say[-expect...]] say expect[-say[-expect]] ...]]]
*
* Perform a UUCP-dialer-like chat script on stdin and stdout.
*/
+int
main(argc, argv)
int argc;
char **argv;
{
- int option, n;
+ int option;
char *arg;
program_name = *argv;
++verbose;
break;
+ case 'f':
+ if (arg = OPTARG(argc, argv))
+ chat_file = copy_of(arg);
+ else
+ usage();
+
+ break;
+
case 'l':
if (arg = OPTARG(argc, argv))
- lock_file = copyof(arg);
+ lock_file = copy_of(arg);
else
usage();
openlog("chat", LOG_PID | LOG_NDELAY, LOG_LOCAL2);
if (verbose) {
- setlogmask(LOG_UPTO(LOG_INFO));
+ setlogmask(LOG_UPTO(LOG_INFO));
} else {
- setlogmask(LOG_UPTO(LOG_WARNING));
+ setlogmask(LOG_UPTO(LOG_WARNING));
}
#endif
-
init();
- while (arg = ARG(argc, argv))
+ if (chat_file != NULL)
{
- chat_expect(arg);
+ arg = ARG(argc, argv);
+ if (arg != NULL)
+ usage();
+ else
+ do_file (chat_file);
+ }
+ else
+ {
+ while (arg = ARG(argc, argv))
+ {
+ chat_expect(arg);
- if (arg = ARG(argc, argv))
- chat_send(arg);
+ if (arg = ARG(argc, argv))
+ chat_send(arg);
+ }
}
terminate(0);
}
+/*
+ * Process a chat script when read from a file.
+ */
+
+void do_file (chat_file)
+char *chat_file;
+ {
+ int linect, len, sendflg;
+ char *sp, *arg, quote;
+ char buf [STR_LEN];
+ FILE *cfp;
+
+ if ((cfp = fopen (chat_file, "r")) == NULL)
+ {
+ syslog (LOG_ERR, "%s -- open failed: %m", chat_file);
+ terminate (1);
+ }
+
+ linect = 0;
+ sendflg = 0;
+
+ while (fgets(buf, STR_LEN, cfp) != NULL)
+ {
+ sp = strchr (buf, '\n');
+ if (sp)
+ *sp = '\0';
+
+ linect++;
+ sp = buf;
+ while (*sp != '\0')
+ {
+ if (*sp == ' ' || *sp == '\t')
+ {
+ ++sp;
+ continue;
+ }
+
+ if (*sp == '"' || *sp == '\'')
+ {
+ quote = *sp++;
+ arg = sp;
+ while (*sp != quote)
+ {
+ if (*sp == '\0')
+ {
+ syslog (LOG_ERR, "unterminated quote (line %d)",
+ linect);
+ terminate (1);
+ }
+
+ if (*sp++ == '\\')
+ if (*sp != '\0')
+ ++sp;
+ }
+ }
+ else
+ {
+ arg = sp;
+ while (*sp != '\0' && *sp != ' ' && *sp != '\t')
+ ++sp;
+ }
+
+ if (*sp != '\0')
+ *sp++ = '\0';
+
+ if (sendflg)
+ {
+ chat_send (arg);
+ }
+ else
+ {
+ chat_expect (arg);
+ }
+ sendflg = !sendflg;
+ }
+ }
+ fclose (cfp);
+ }
+
/*
* We got an error parsing the command line.
*/
-usage()
+void usage()
{
- fprintf(stderr,
- "Usage: %s [ -v ] [ -l lock-file ] [ -t timeout ] chat-script\n",
+ fprintf(stderr, "\
+Usage: %s [-v] [-l lock-file] [-t timeout] {-f chat-file || chat-script}\n",
program_name);
exit(1);
}
+char line[256];
+char *p;
+
+void logf (str)
+const char *str;
+ {
+ p = line + strlen(line);
+ strcat (p, str);
+
+ if (str[strlen(str)-1] == '\n')
+ {
+ syslog (LOG_INFO, "%s", line);
+ line[0] = 0;
+ }
+ }
+
+void logflush()
+ {
+ if (line[0] != 0)
+ {
+ syslog(LOG_INFO, "%s", line);
+ line[0] = 0;
+ }
+ }
+
/*
- * Print a warning message.
+ * Unlock and terminate with an error.
*/
-/*VARARGS1*/
-warn(format, arg1, arg2, arg3, arg4)
-char *format;
-int arg1, arg2, arg3, arg4;
+void die()
{
- logf("%s: Warning: ", program_name);
- logf(format, arg1, arg2, arg3, arg4);
- logf("\n");
+ unlock();
+ terminate(1);
}
/*
* Print an error message and terminate.
*/
-/*VARARGS1*/
-fatal(format, arg1, arg2, arg3, arg4)
-char *format;
-int arg1, arg2, arg3, arg4;
+
+void fatal (msg)
+const char *msg;
{
- logf("%s: ", program_name);
- logf(format, arg1, arg2, arg3, arg4);
- logf("\n");
+ syslog(LOG_ERR, "%s", msg);
unlock();
terminate(1);
}
* Print an error message along with the system error message and
* terminate.
*/
-/*VARARGS1*/
-sysfatal(format, arg1, arg2, arg3, arg4)
-char *format;
-int arg1, arg2, arg3, arg4;
- {
- char message[STR_LEN];
- sprintf(message, "%s: ", program_name);
- sprintf(message + strlen(message), format, arg1, arg2, arg3, arg4);
- perror(message);
+void sysfatal (msg)
+const char *msg;
+ {
+ syslog(LOG_ERR, "%s: %m", msg);
unlock();
terminate(1);
}
int alarmed = 0;
-SIGTYPE
- sigalrm()
-{
+SIGTYPE sigalrm(signo)
+int signo;
+ {
int flags;
- alarm(1); alarmed = 1; /* Reset alarm to avoid race window */
+ alarm(1);
+ alarmed = 1; /* Reset alarm to avoid race window */
signal(SIGALRM, sigalrm); /* that can cause hanging in read() */
+ logflush();
if ((flags = fcntl(0, F_GETFL, 0)) == -1)
sysfatal("Can't get file mode flags on stdin");
else
if (verbose)
{
- logf("alarm\n");
+ syslog(LOG_INFO, "alarm");
}
}
-unalarm()
+void unalarm()
{
int flags;
sysfatal("Can't set file mode flags on stdin");
}
-SIGTYPE
- sigint()
-{
- fatal("SIGINT");
-}
+SIGTYPE sigint(signo)
+int signo;
+ {
+ fatal("SIGINT");
+ }
-SIGTYPE
- sigterm()
-{
- fatal("SIGTERM");
-}
+SIGTYPE sigterm(signo)
+int signo;
+ {
+ fatal("SIGTERM");
+ }
-SIGTYPE
- sighup()
-{
- fatal("SIGHUP");
-}
+SIGTYPE sighup(signo)
+int signo;
+ {
+ fatal("SIGHUP");
+ }
-init()
+void init()
{
signal(SIGINT, sigint);
signal(SIGTERM, sigterm);
set_tty_parameters();
signal(SIGALRM, sigalrm);
- alarm(0); alarmed = 0;
+ alarm(0);
+ alarmed = 0;
}
-
-set_tty_parameters()
+void set_tty_parameters()
{
#ifdef TERMIO
struct termio t;
saved_tty_parameters = t;
have_tty_parameters = 1;
- t.c_iflag = IGNBRK | ISTRIP | IGNPAR;
- t.c_oflag = 0;
- t.c_lflag = 0;
+ t.c_iflag |= IGNBRK | ISTRIP | IGNPAR;
+ t.c_oflag = 0;
+ t.c_lflag = 0;
t.c_cc[VERASE] = t.c_cc[VKILL] = 0;
t.c_cc[VMIN] = 1;
t.c_cc[VTIME] = 0;
#endif
}
+void break_sequence()
+ {
+#ifdef TERMIOS
+ tcsendbreak (0, 0);
+#endif
+ }
-terminate(status)
-{
- if (have_tty_parameters &&
+void terminate(status)
+int status;
+ {
+ if (have_tty_parameters &&
#ifdef TERMIO
- ioctl(0, TCSETA, &saved_tty_parameters) < 0
+ ioctl(0, TCSETA, &saved_tty_parameters) < 0
#endif
#ifdef TERMIOS
- tcsetattr(0, TCSANOW, &saved_tty_parameters) < 0
+ tcsetattr(0, TCSANOW, &saved_tty_parameters) < 0
#endif
- ) {
- perror("Can't restore terminal parameters");
- unlock();
- exit(1);
- }
- exit(status);
-}
+ ) {
+ syslog(LOG_ERR, "Can't restore terminal parameters: %m");
+ unlock();
+ exit(1);
+ }
+ exit(status);
+ }
/*
* Create a lock file for the named lock device
*/
-lock()
+void lock()
{
- char hdb_lock_buffer[12];
int fd, pid;
+# ifdef PIDSTRING
+ char hdb_lock_buffer[12];
+# endif
lock_file = strcat(strcat(strcpy(malloc(strlen(LOCK_DIR)
+ 1 + strlen(lock_file) + 1),
if ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0)
{
char *s = lock_file;
-
lock_file = (char *)0; /* Don't remove someone else's lock file! */
- sysfatal("Can't get lock file '%s'", s);
+ syslog(LOG_ERR, "Can't get lock file '%s': %m", s);
+ die();
}
# ifdef PIDSTRING
/*
* Remove our lockfile
*/
-unlock()
+void unlock()
{
if (lock_file)
{
register char *s;
int sending;
{
- char temp[STR_LEN];
+ char temp[STR_LEN], cur_chr;
register char *s1;
int add_return = sending;
+#define isoctal(chr) (((chr) >= '0') && ((chr) <= '7'))
- for (s1 = temp; *s; ++s)
- switch (*s)
- {
- case '\\':
- switch (*++s)
- {
- case '\\':
- case 'd': if (sending)
- *s1++ = '\\';
+ s1 = temp;
+ while (*s)
+ {
+ cur_chr = *s++;
+ if (cur_chr == '^')
+ {
+ cur_chr = *s++;
+ if (cur_chr == '\0')
+ {
+ *s1++ = '^';
+ break;
+ }
+ cur_chr &= 0x1F;
+ if (cur_chr != 0)
+ *s1++ = cur_chr;
+ continue;
+ }
- *s1++ = *s;
- break;
+ if (cur_chr != '\\')
+ {
+ *s1++ = cur_chr;
+ continue;
+ }
- case 'q': quiet = ! quiet; break;
- case 'r': *s1++ = '\r'; break;
- case 'n': *s1++ = '\n'; break;
- case 's': *s1++ = ' '; break;
+ cur_chr = *s++;
+ if (cur_chr == '\0')
+ {
+ if (sending)
+ {
+ *s1++ = '\\';
+ *s1++ = '\\';
+ }
+ break;
+ }
- case 'c': if (sending && s[1] == '\0')
- add_return = 0;
- else
- *s1++ = *s;
+ switch (cur_chr)
+ {
+ case 'b':
+ *s1++ = '\b';
+ break;
- break;
+ case 'c':
+ if (sending && *s == '\0')
+ add_return = 0;
+ else
+ *s1++ = cur_chr;
+ break;
- default: *s1++ = *s;
- }
+ case '\\':
+ case 'K':
+ case 'p':
+ case 'd':
+ if (sending)
+ *s1++ = '\\';
- break;
+ *s1++ = cur_chr;
+ break;
- case '^':
- *s1++ = (int)(*++s) & 0x1F;
- break;
+ case 'q':
+ quiet = ! quiet;
+ break;
+
+ case 'r':
+ *s1++ = '\r';
+ break;
+
+ case 'n':
+ *s1++ = '\n';
+ break;
+
+ case 's':
+ *s1++ = ' ';
+ break;
+
+ case 't':
+ *s1++ = '\t';
+ break;
+
+ case 'N':
+ if (sending)
+ {
+ *s1++ = '\\';
+ *s1++ = '\0';
+ }
+ else
+ *s1++ = 'N';
+ break;
+
+ default:
+ if (isoctal (cur_chr))
+ {
+ cur_chr &= 0x07;
+ if (isoctal (*s))
+ {
+ cur_chr <<= 3;
+ cur_chr |= *s++ - '0';
+ if (isoctal (*s))
+ {
+ cur_chr <<= 3;
+ cur_chr |= *s++ - '0';
+ }
+ }
+
+ if (cur_chr != 0 || sending)
+ {
+ if (sending && (cur_chr == '\\' || cur_chr == 0))
+ *s1++ = '\\';
+ *s1++ = cur_chr;
+ }
+ break;
+ }
+
+ if (sending)
+ *s1++ = '\\';
+ *s1++ = cur_chr;
+ break;
+ }
+ }
- default:
- *s1++ = *s;
- }
-
if (add_return)
*s1++ = '\r';
- *s1 = '\0';
- return (copyof(temp));
+ *s1++ = '\0'; /* guarantee closure */
+ *s1++ = '\0'; /* terminate the string */
+ return dup_mem (temp, (size_t) (s1 - temp)); /* may have embedded nuls */
}
/*
- *
+ * Process the expect string
*/
-chat_expect(s)
+void chat_expect(s)
register char *s;
{
if (strcmp(s, "ABORT") == 0)
else
{
if (fail_reason)
- logf("Failed(%s)\n", fail_reason);
+ syslog(LOG_INFO, "Failed (%s)", fail_reason);
else
- logf("Failed\n");
+ syslog(LOG_INFO, "Failed");
unlock();
terminate(1);
}
/*
- *
+ * process the reply string
*/
-chat_send(s)
+void chat_send (s)
register char *s;
{
if (abort_next)
s1 = clean(s, 0);
- if (strlen(s1) > strlen(s))
- fatal("Illegal ABORT string ('%s')\n", s);
-
- if (strlen(s1) > sizeof fail_buffer - 1)
- fatal("Too long ABORT string ('%s')\n", s);
+ if (strlen(s1) > strlen(s) || strlen(s1) > sizeof fail_buffer - 1)
+ {
+ syslog(LOG_WARNING, "Illegal or too-long ABORT string ('%s')", s);
+ die();
+ }
- strcpy(s, s1);
- abort_string[n_aborts++] = s;
+ abort_string[n_aborts++] = s1;
if (verbose)
{
- register char *s1 = s;
-
logf("abort on (");
for (s1 = s; *s1; ++s1)
- logf("%s", character(*s1));
+ logf(character(*s1));
logf(")\n");
}
if (verbose)
{
- logf("timeout set to %d seconds\n", timeout);
+ syslog(LOG_INFO, "timeout set to %d seconds", timeout);
}
}
else
+ {
+ if (strcmp(s, "EOT") == 0)
+ s = "^D\\c";
+ else
+ if (strcmp(s, "BREAK") == 0)
+ s = "\\K\\c";
if ( ! put_string(s))
{
- logf("Failed\n");
+ syslog(LOG_INFO, "Failed");
unlock();
terminate(1);
}
+ }
}
int get_char()
return ((int)c & 0x7F);
default:
- warn("read() on stdin returned %d", status);
+ syslog(LOG_WARNING, "warning: read() on stdin returned %d",
+ status);
case -1:
if ((status = fcntl(0, F_GETFL, 0)) == -1)
return (0);
default:
- warn("write() on stdout returned %d", status);
+ syslog(LOG_WARNING, "warning: write() on stdout returned %d",
+ status);
case -1:
if ((status = fcntl(0, F_GETFL, 0)) == -1)
}
}
-int put_string(s)
+int write_char (c)
+int c;
+ {
+ if (alarmed || put_char(c) < 0)
+ {
+ extern int errno;
+
+ alarm(0); alarmed = 0;
+
+ if (verbose)
+ {
+ if (errno == EINTR || errno == EWOULDBLOCK)
+ syslog(LOG_INFO, " -- write timed out");
+ else
+ syslog(LOG_INFO, " -- write failed: %m");
+ }
+ return (0);
+ }
+ return (1);
+ }
+
+int put_string (s)
register char *s;
{
s = clean(s, 1);
register char *s1 = s;
for (s1 = s; *s1; ++s1)
- logf("%s", character(*s1));
+ logf(character(*s1));
}
logf(")\n");
alarm(timeout); alarmed = 0;
- for ( ; *s; ++s)
+ while (*s)
{
- register char c = *s;
+ register char c = *s++;
- if (c == '\\')
- if ((c = *++s) == '\0')
- break;
- else
- if (c == 'd') /* \d -- Delay */
- {
- sleep(2);
- continue;
- }
+ if (c != '\\')
+ {
+ if (!write_char (c))
+ return 0;
+ continue;
+ }
- if (alarmed || put_char(*s) < 0)
+ c = *s++;
+ switch (c)
{
- extern int errno;
+ case 'd':
+ sleep(1);
+ break;
- alarm(0); alarmed = 0;
+ case 'K':
+ break_sequence();
+ break;
- if (verbose)
- {
- if (errno == EINTR || errno == EWOULDBLOCK)
- logf(" -- write timed out\n");
- else
- syslog(LOG_INFO, " -- write failed: %m");
- }
+ case 'p':
+ usleep(10000); /* 1/100th of a second. */
+ break;
- return (0);
+ default:
+ if (!write_char (c))
+ return 0;
+ break;
}
}
- alarm(0); alarmed = 0;
+ alarm(0);
+ alarmed = 0;
return (1);
}
logf("expect (");
for (s1 = string; *s1; ++s1)
- logf("%s", character(*s1));
+ logf(character(*s1));
logf(")\n");
}
if (len > STR_LEN)
{
- logf("expect string is too long\n");
- return;
+ syslog(LOG_INFO, "expect string is too long");
+ return 0;
}
if (len == 0)
{
if (verbose)
{
- logf("got it\n");
+ syslog(LOG_INFO, "got it");
}
return (1);
if (c == '\n')
logf("\n");
else
- logf("%s", character(c));
+ logf(character(c));
}
*s++ = c;
{
if (verbose)
{
- logf("got it\n");
+ logf(" -- got it\n");
}
alarm(0); alarmed = 0;
}
if (alarmed && verbose)
- warn("Alarm synchronization problem");
+ syslog(LOG_WARNING, "warning: alarm synchronization problem");
}
alarm(0);
if (verbose && printed)
{
- extern int errno;
-
if (alarmed)
logf(" -- read timed out\n");
else
+ {
+ logflush();
syslog(LOG_INFO, " -- read failed: %m");
+ }
}
alarmed = 0;
return (0);
}
-/*
- * Delay an amount appropriate for between typed characters.
- */
-delay()
- {
- register int i;
-
-# ifdef NO_USLEEP
- for (i = 0; i < 30000; ++i) /* ... did we just say appropriate? */
- ;
-# else /* NO_USLEEP */
- usleep(100);
-# endif /* NO_USLEEP */
- }
-
-char line[256];
-char *p;
-
-logf(fmt, va_alist)
-char *fmt;
-va_dcl
-{
- va_list pvar;
- char buf[256];
-
- va_start(pvar);
- vsprintf(buf, fmt, pvar);
- va_end(pvar);
-
- p = line + strlen(line);
- strcat(p, buf);
-
- if (buf[strlen(buf)-1] == '\n') {
- syslog(LOG_INFO, "%s", line);
- line[0] = 0;
- }
-}
#ifdef ultrix
+#undef NO_USLEEP
#include <sys/types.h>
#include <sys/time.h>
last edit: 29-Oct-1984 D A Gwyn
*/
-extern int select();
+extern int select();
int
-usleep( usec ) /* returns 0 if ok, else -1 */
- long usec; /* delay in microseconds */
+usleep( usec ) /* returns 0 if ok, else -1 */
+ long usec; /* delay in microseconds */
{
- static struct /* `timeval' */
+ static struct /* `timeval' */
{
- long tv_sec; /* seconds */
- long tv_usec; /* microsecs */
- } delay; /* _select() timeout */
+ long tv_sec; /* seconds */
+ long tv_usec; /* microsecs */
+ } delay; /* _select() timeout */
delay.tv_sec = usec / 1000000L;
delay.tv_usec = usec % 1000000L;
return select( 0, (long *)0, (long *)0, (long *)0, &delay );
}
#endif
+
+/*
+ * Delay an amount appropriate for between typed characters.
+ */
+void delay()
+ {
+# ifdef NO_USLEEP
+ register int i;
+
+ for (i = 0; i < 30000; ++i) /* ... did we just say appropriate? */
+ ;
+# else /* NO_USLEEP */
+ usleep(100);
+# endif /* NO_USLEEP */
+ }
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