* Chat -- a program for automatic session establishment (i.e. dial
* the phone and log in).
*
+ * Standard termination codes:
+ * 0 - successful completion of the script
+ * 1 - invalid argument, expect string too large, etc.
+ * 2 - error on an I/O operation or fatal error condition.
+ * 3 - timeout waiting for a simple string.
+ * 4 - the first string declared as "ABORT"
+ * 5 - the second string declared as "ABORT"
+ * 6 - ... and so on for successive ABORT strings.
+ *
* This software is in the public domain.
*
- * Please send all bug reports, requests for information, etc. to:
+ * -----------------
+ * added -T and -U option and \T and \U substitution to pass a phone
+ * number into chat script. Two are needed for some ISDN TA applications.
+ * Keith Dart <kdart@cisco.com>
+ *
+ *
+ * Added SAY keyword to send output to stderr.
+ * This allows to turn ECHO OFF and to output specific, user selected,
+ * text to give progress messages. This best works when stderr
+ * exists (i.e.: pppd in nodetach mode).
+ *
+ * Added HANGUP directives to allow for us to be called
+ * back. When HANGUP is set to NO, chat will not hangup at HUP signal.
+ * We rely on timeouts in that case.
+ *
+ * Added CLR_ABORT to clear previously set ABORT string. This has been
+ * dictated by the HANGUP above as "NO CARRIER" (for example) must be
+ * an ABORT condition until we know the other host is going to close
+ * the connection for call back. As soon as we have completed the
+ * first stage of the call back sequence, "NO CARRIER" is a valid, non
+ * fatal string. As soon as we got called back (probably get "CONNECT"),
+ * we should re-arm the ABORT "NO CARRIER". Hence the CLR_ABORT command.
+ * Note that CLR_ABORT packs the abort_strings[] array so that we do not
+ * have unused entries not being reclaimed.
+ *
+ * In the same vein as above, added CLR_REPORT keyword.
+ *
+ * Allow for comments. Line starting with '#' are comments and are
+ * ignored. If a '#' is to be expected as the first character, the
+ * expect string must be quoted.
+ *
+ *
+ * Francis Demierre <Francis@SwissMail.Com>
+ * Thu May 15 17:15:40 MET DST 1997
+ *
+ *
+ * Added -r "report file" switch & REPORT keyword.
+ * Robert Geer <bgeer@xmission.com>
+ *
+ * Added -s "use stderr" and -S "don't use syslog" switches.
+ * June 18, 1997
+ * Karl O. Pinc <kop@meme.com>
+ *
+ *
+ * Added -e "echo" switch & ECHO keyword
+ * Dick Streefland <dicks@tasking.nl>
+ *
+ *
+ * Considerable updates and modifications by
+ * Al Longyear <longyear@pobox.com>
+ * Paul Mackerras <paulus@cs.anu.edu.au>
*
- * Al Longyear (longyear@netcom.com)
- * (I was the last person to change this code.)
*
* The original author is:
*
* 1760 Zollinger Road
* Columbus, OH 43221
* (614)451-1883
+ *
+ *
*/
-static char rcsid[] = "$Id: chat.c,v 1.6 1995/04/28 06:21:50 paulus Exp $";
+#ifndef lint
+static char rcsid[] = "$Id: chat.c,v 1.16 1997/11/27 06:00:06 paulus Exp $";
+#endif
#include <stdio.h>
+#include <ctype.h>
+#include <time.h>
#include <fcntl.h>
#include <signal.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
+#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <syslog.h>
#include <termios.h>
#endif
+#if __STDC__
+#include <stdarg.h>
+#define __V(x) x
+#else
+#include <varargs.h>
+#define __V(x) (va_alist) va_dcl
+#define const
+#endif
+
#define STR_LEN 1024
#ifndef SIGTYPE
#define SIGTYPE void
#endif
-#ifdef __STDC__
#undef __P
+#undef __V
+
+#ifdef __STDC__
+#include <stdarg.h>
+#define __V(x) x
#define __P(x) x
#else
+#include <varargs.h>
+#define __V(x) (va_alist) va_dcl
#define __P(x) ()
#define const
#endif
+#ifndef O_NONBLOCK
+#define O_NONBLOCK O_NDELAY
+#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=='-'\
+ ((--c,++v),_O=4,c)&&**v=='-'&&v[0][1]?*++*v=='-'\
&&!v[0][1]?(--c,++v,0):(_O=2,*(*v)++):0))
#define OPTARG(c,v) (_O&2?**v||(++v,--c)?(_O=1,--c,*v++): \
(_O=4,(char*)0):(char*)0)
char *program_name;
#define MAX_ABORTS 50
+#define MAX_REPORTS 50
#define DEFAULT_CHAT_TIMEOUT 45
-int verbose = 0;
-int quiet = 0;
-char *lock_file = (char *)0;
-char *chat_file = (char *)0;
-int timeout = DEFAULT_CHAT_TIMEOUT;
+int echo = 0;
+int verbose = 0;
+int to_log = 1;
+int to_stderr = 0;
+int Verbose = 0;
+int quiet = 0;
+int report = 0;
+int exit_code = 0;
+FILE* report_fp = (FILE *) 0;
+char *report_file = (char *) 0;
+char *chat_file = (char *) 0;
+char *phone_num = (char *) 0;
+char *phone_num2 = (char *) 0;
+int timeout = DEFAULT_CHAT_TIMEOUT;
int have_tty_parameters = 0;
+
#ifdef TERMIO
+#define term_parms struct termio
+#define get_term_param(param) ioctl(0, TCGETA, param)
+#define set_term_param(param) ioctl(0, TCSETA, param)
struct termio saved_tty_parameters;
#endif
+
#ifdef TERMIOS
+#define term_parms struct termios
+#define get_term_param(param) tcgetattr(0, param)
+#define set_term_param(param) tcsetattr(0, TCSANOW, param)
struct termios saved_tty_parameters;
#endif
char *abort_string[MAX_ABORTS], *fail_reason = (char *)0,
fail_buffer[50];
-int n_aborts = 0, abort_next = 0, timeout_next = 0;
+int n_aborts = 0, abort_next = 0, timeout_next = 0, echo_next = 0;
+int clear_abort_next = 0;
+
+char *report_string[MAX_REPORTS] ;
+char report_buffer[50] ;
+int n_reports = 0, report_next = 0, report_gathering = 0 ;
+int clear_report_next = 0;
+
+int say_next = 0, hup_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));
+void logf __P((const char *fmt, ...));
+void fatal __P((int code, const char *fmt, ...));
SIGTYPE sigalrm __P((int signo));
SIGTYPE sigint __P((int signo));
SIGTYPE sigterm __P((int signo));
void unalarm __P((void));
void init __P((void));
void set_tty_parameters __P((void));
+void echo_stderr __P((int));
void break_sequence __P((void));
void terminate __P((int status));
void do_file __P((char *chat_file));
-void delay __P((void));
int get_string __P((register char *string));
int put_string __P((register char *s));
int write_char __P((int c));
char *clean __P((register char *s, int sending));
void break_sequence __P((void));
void terminate __P((int status));
-void die __P((void));
+void pack_array __P((char **array, int end));
+char *expect_strtok __P((char *, char *));
+int vfmtmsg __P((char *, int, const char *, va_list)); /* vsprintf++ */
+
+int main __P((int, char *[]));
void *dup_mem(b, c)
void *b;
size_t c;
- {
+{
void *ans = malloc (c);
if (!ans)
- fatal ("memory error!\n");
+ fatal(2, "memory error!");
+
memcpy (ans, b, c);
return ans;
- }
+}
void *copy_of (s)
char *s;
- {
+{
return dup_mem (s, strlen (s) + 1);
- }
+}
/*
- * chat [ -v ] [ -t timeout ] [ -f chat-file ] \
+ * chat [ -v ] [-T number] [-U number] [ -t timeout ] [ -f chat-file ] \
+ * [ -r report-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 argc;
+ char **argv;
+{
int option;
char *arg;
program_name = *argv;
+ tzset();
- while (option = OPTION(argc, argv))
- switch (option)
- {
- case 'v':
- ++verbose;
- break;
-
- case 'f':
- if (arg = OPTARG(argc, argv))
- chat_file = copy_of(arg);
- else
- usage();
+ while ((option = OPTION(argc, argv)) != 0) {
+ switch (option) {
+ case 'e':
+ ++echo;
+ break;
- break;
+ case 'v':
+ ++verbose;
+ break;
- case 'l':
- if (arg = OPTARG(argc, argv))
- lock_file = copy_of(arg);
- else
- usage();
+ case 'V':
+ ++Verbose;
+ break;
- break;
+ case 's':
+ ++to_stderr;
+ break;
- case 't':
- if (arg = OPTARG(argc, argv))
- timeout = atoi(arg);
- else
- usage();
+ case 'S':
+ to_log = 0;
+ break;
- break;
+ case 'f':
+ if ((arg = OPTARG(argc, argv)) != NULL)
+ chat_file = copy_of(arg);
+ else
+ usage();
+ break;
- default:
+ case 't':
+ if ((arg = OPTARG(argc, argv)) != NULL)
+ timeout = atoi(arg);
+ else
usage();
+ break;
+
+ case 'r':
+ arg = OPTARG (argc, argv);
+ if (arg) {
+ if (report_fp != NULL)
+ fclose (report_fp);
+ report_file = copy_of (arg);
+ report_fp = fopen (report_file, "a");
+ if (report_fp != NULL) {
+ if (verbose)
+ fprintf (report_fp, "Opening \"%s\"...\n",
+ report_file);
+ report = 1;
+ }
}
+ break;
+
+ case 'T':
+ if ((arg = OPTARG(argc, argv)) != NULL)
+ phone_num = copy_of(arg);
+ else
+ usage();
+ break;
+
+ case 'U':
+ if ((arg = OPTARG(argc, argv)) != NULL)
+ phone_num2 = copy_of(arg);
+ else
+ usage();
+ break;
+
+ default:
+ usage();
+ break;
+ }
+ }
+/*
+ * Default the report file to the stderr location
+ */
+ if (report_fp == NULL)
+ report_fp = stderr;
+ if (to_log) {
#ifdef ultrix
- openlog("chat", LOG_PID);
+ openlog("chat", LOG_PID);
#else
- openlog("chat", LOG_PID | LOG_NDELAY, LOG_LOCAL2);
+ openlog("chat", LOG_PID | LOG_NDELAY, LOG_LOCAL2);
- if (verbose) {
- setlogmask(LOG_UPTO(LOG_INFO));
- } else {
- setlogmask(LOG_UPTO(LOG_WARNING));
- }
+ if (verbose)
+ setlogmask(LOG_UPTO(LOG_INFO));
+ else
+ setlogmask(LOG_UPTO(LOG_WARNING));
#endif
+ }
init();
- if (chat_file != NULL)
- {
+ if (chat_file != NULL) {
arg = ARG(argc, argv);
if (arg != NULL)
usage();
else
do_file (chat_file);
- }
- else
- {
- while (arg = ARG(argc, argv))
- {
+ } else {
+ while ((arg = ARG(argc, argv)) != NULL) {
chat_expect(arg);
- if (arg = ARG(argc, argv))
+ if ((arg = ARG(argc, argv)) != NULL)
chat_send(arg);
- }
}
+ }
terminate(0);
- }
+ return 0;
+}
/*
* Process a chat script when read from a file.
void do_file (chat_file)
char *chat_file;
- {
- int linect, len, sendflg;
+{
+ int linect, 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);
- }
+ cfp = fopen (chat_file, "r");
+ if (cfp == NULL)
+ fatal(1, "%s -- open failed: %m", chat_file);
linect = 0;
sendflg = 0;
- while (fgets(buf, STR_LEN, cfp) != NULL)
- {
+ 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')
- {
+
+ /* lines starting with '#' are comments. If a real '#'
+ is to be expected, it should be quoted .... */
+ if ( *sp == '#' )
+ continue;
+
+ while (*sp != '\0') {
+ if (*sp == ' ' || *sp == '\t') {
++sp;
continue;
- }
+ }
- if (*sp == '"' || *sp == '\'')
- {
+ if (*sp == '"' || *sp == '\'') {
quote = *sp++;
arg = sp;
- while (*sp != quote)
- {
+ while (*sp != quote) {
if (*sp == '\0')
- {
- syslog (LOG_ERR, "unterminated quote (line %d)",
- linect);
- terminate (1);
- }
-
- if (*sp++ == '\\')
+ fatal(1, "unterminated quote (line %d)", linect);
+
+ if (*sp++ == '\\') {
if (*sp != '\0')
++sp;
}
}
- else
- {
+ }
+ 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);
}
+ fclose (cfp);
+}
/*
* We got an error parsing the command line.
*/
void usage()
- {
+{
fprintf(stderr, "\
-Usage: %s [-v] [-t timeout] {-f chat-file || chat-script}\n",
- program_name);
+Usage: %s [-e] [-v] [-t timeout] [-r report-file] [-T phone-number]\n\
+ [-U phone-number2] {-f chat-file | chat-script}\n", program_name);
exit(1);
- }
+}
-char line[256];
-char *p;
+char line[1024];
-void logf (str)
-const char *str;
- {
- p = line + strlen(line);
- strcat (p, str);
+/*
+ * Send a message to syslog and/or stderr.
+ */
+void logf __V((const char *fmt, ...))
+{
+ va_list args;
- if (str[strlen(str)-1] == '\n')
- {
- syslog (LOG_INFO, "%s", line);
- line[0] = 0;
- }
- }
+#if __STDC__
+ va_start(args, fmt);
+#else
+ char *fmt;
+ va_start(args);
+ fmt = va_arg(args, char *);
+#endif
-void logflush()
- {
- if (line[0] != 0)
- {
+ vfmtmsg(line, sizeof(line), fmt, args);
+ if (to_log)
syslog(LOG_INFO, "%s", line);
- line[0] = 0;
- }
- }
-
-/*
- * Terminate with an error.
- */
-void die()
- {
- terminate(1);
- }
+ if (to_stderr)
+ fprintf(stderr, "%s\n", line);
+}
/*
* Print an error message and terminate.
*/
-void fatal (msg)
-const char *msg;
- {
- syslog(LOG_ERR, "%s", msg);
- terminate(1);
- }
+void fatal __V((int code, const char *fmt, ...))
+{
+ va_list args;
-/*
- * Print an error message along with the system error message and
- * terminate.
- */
+#if __STDC__
+ va_start(args, fmt);
+#else
+ int code;
+ char *fmt;
+ va_start(args);
+ code = va_arg(args, int);
+ fmt = va_arg(args, char *);
+#endif
-void sysfatal (msg)
-const char *msg;
- {
- syslog(LOG_ERR, "%s: %m", msg);
- terminate(1);
- }
+ vfmtmsg(line, sizeof(line), fmt, args);
+ if (to_log)
+ syslog(LOG_ERR, "%s", line);
+ if (to_stderr)
+ fprintf(stderr, "%s\n", line);
+ terminate(code);
+}
int alarmed = 0;
SIGTYPE sigalrm(signo)
int signo;
- {
+{
int flags;
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 (fcntl(0, F_SETFL, flags | FNDELAY) == -1)
- sysfatal("Can't set file mode flags on stdin");
+ fatal(2, "Can't get file mode flags on stdin: %m");
+
+ if (fcntl(0, F_SETFL, flags | O_NONBLOCK) == -1)
+ fatal(2, "Can't set file mode flags on stdin: %m");
if (verbose)
- {
- syslog(LOG_INFO, "alarm");
- }
- }
+ logf("alarm");
+}
void unalarm()
- {
+{
int flags;
if ((flags = fcntl(0, F_GETFL, 0)) == -1)
- sysfatal("Can't get file mode flags on stdin");
- else
- if (fcntl(0, F_SETFL, flags & ~FNDELAY) == -1)
- sysfatal("Can't set file mode flags on stdin");
- }
+ fatal(2, "Can't get file mode flags on stdin: %m");
+
+ if (fcntl(0, F_SETFL, flags & ~O_NONBLOCK) == -1)
+ fatal(2, "Can't set file mode flags on stdin: %m");
+}
SIGTYPE sigint(signo)
int signo;
- {
- fatal("SIGINT");
- }
+{
+ fatal(2, "SIGINT");
+}
SIGTYPE sigterm(signo)
int signo;
- {
- fatal("SIGTERM");
- }
+{
+ fatal(2, "SIGTERM");
+}
SIGTYPE sighup(signo)
int signo;
- {
- fatal("SIGHUP");
- }
+{
+ fatal(2, "SIGHUP");
+}
void init()
- {
+{
signal(SIGINT, sigint);
signal(SIGTERM, sigterm);
signal(SIGHUP, sighup);
signal(SIGALRM, sigalrm);
alarm(0);
alarmed = 0;
- }
+}
void set_tty_parameters()
- {
-#ifdef TERMIO
- struct termio t;
-
- if (ioctl(0, TCGETA, &t) < 0)
- sysfatal("Can't get terminal parameters");
-#endif
-#ifdef TERMIOS
- struct termios t;
+{
+#if defined(get_term_param)
+ term_parms t;
- if (tcgetattr(0, &t) < 0)
- sysfatal("Can't get terminal parameters");
-#endif
+ if (get_term_param (&t) < 0)
+ fatal(2, "Can't get terminal parameters: %m");
saved_tty_parameters = t;
- have_tty_parameters = 1;
-
- 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;
-
-#ifdef TERMIO
- if (ioctl(0, TCSETA, &t) < 0)
- sysfatal("Can't set terminal parameters");
-#endif
-#ifdef TERMIOS
- if (tcsetattr(0, TCSANOW, &t) < 0)
- sysfatal("Can't set terminal parameters");
+ have_tty_parameters = 1;
+
+ 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;
+
+ if (set_term_param (&t) < 0)
+ fatal(2, "Can't set terminal parameters: %m");
#endif
- }
+}
void break_sequence()
- {
+{
#ifdef TERMIOS
tcsendbreak (0, 0);
#endif
- }
+}
void terminate(status)
int status;
- {
- if (have_tty_parameters &&
-#ifdef TERMIO
- ioctl(0, TCSETA, &saved_tty_parameters) < 0
-#endif
-#ifdef TERMIOS
- tcsetattr(0, TCSANOW, &saved_tty_parameters) < 0
+{
+ echo_stderr(-1);
+ if (report_file != (char *) 0 && report_fp != (FILE *) NULL) {
+/*
+ * Allow the last of the report string to be gathered before we terminate.
+ */
+ if (report_gathering) {
+ int c, rep_len;
+
+ rep_len = strlen(report_buffer);
+ while (rep_len + 1 <= sizeof(report_buffer)) {
+ alarm(1);
+ c = get_char();
+ alarm(0);
+ if (c < 0 || iscntrl(c))
+ break;
+ report_buffer[rep_len] = c;
+ ++rep_len;
+ }
+ report_buffer[rep_len] = 0;
+ fprintf (report_fp, "chat: %s\n", report_buffer);
+ }
+ if (verbose)
+ fprintf (report_fp, "Closing \"%s\".\n", report_file);
+ fclose (report_fp);
+ report_fp = (FILE *) NULL;
+ }
+
+#if defined(get_term_param)
+ if (have_tty_parameters) {
+ if (set_term_param (&saved_tty_parameters) < 0)
+ fatal(2, "Can't restore terminal parameters: %m");
+ }
#endif
- ) {
- syslog(LOG_ERR, "Can't restore terminal parameters: %m");
- exit(1);
- }
+
exit(status);
- }
+}
/*
* 'Clean up' this string.
*/
char *clean(s, sending)
register char *s;
-int sending;
- {
+int sending; /* set to 1 when sending (putting) this string. */
+{
char temp[STR_LEN], cur_chr;
- register char *s1;
+ register char *s1, *phchar;
int add_return = sending;
#define isoctal(chr) (((chr) >= '0') && ((chr) <= '7'))
s1 = temp;
- while (*s)
- {
+ while (*s) {
cur_chr = *s++;
- if (cur_chr == '^')
- {
+ if (cur_chr == '^') {
cur_chr = *s++;
- if (cur_chr == '\0')
- {
+ if (cur_chr == '\0') {
*s1++ = '^';
break;
- }
+ }
cur_chr &= 0x1F;
- if (cur_chr != 0)
+ if (cur_chr != 0) {
*s1++ = cur_chr;
- continue;
}
+ continue;
+ }
- if (cur_chr != '\\')
- {
+ if (cur_chr != '\\') {
*s1++ = cur_chr;
continue;
- }
+ }
cur_chr = *s++;
- if (cur_chr == '\0')
- {
- if (sending)
- {
+ if (cur_chr == '\0') {
+ if (sending) {
*s1++ = '\\';
*s1++ = '\\';
- }
- break;
}
+ break;
+ }
- switch (cur_chr)
- {
+ switch (cur_chr) {
case 'b':
*s1++ = '\b';
break;
*s1++ = cur_chr;
break;
+ case 'T':
+ if (sending && phone_num) {
+ for ( phchar = phone_num; *phchar != '\0'; phchar++)
+ *s1++ = *phchar;
+ }
+ else {
+ *s1++ = '\\';
+ *s1++ = 'T';
+ }
+ break;
+
+ case 'U':
+ if (sending && phone_num2) {
+ for ( phchar = phone_num2; *phchar != '\0'; phchar++)
+ *s1++ = *phchar;
+ }
+ else {
+ *s1++ = '\\';
+ *s1++ = 'U';
+ }
+ break;
+
case 'q':
- quiet = ! quiet;
+ quiet = 1;
break;
case 'r':
break;
case 'N':
- if (sending)
- {
+ if (sending) {
*s1++ = '\\';
*s1++ = '\0';
- }
+ }
else
*s1++ = 'N';
break;
default:
- if (isoctal (cur_chr))
- {
+ if (isoctal (cur_chr)) {
cur_chr &= 0x07;
- if (isoctal (*s))
- {
+ if (isoctal (*s)) {
cur_chr <<= 3;
cur_chr |= *s++ - '0';
- if (isoctal (*s))
- {
+ if (isoctal (*s)) {
cur_chr <<= 3;
cur_chr |= *s++ - '0';
- }
}
+ }
- if (cur_chr != 0 || sending)
- {
+ if (cur_chr != 0 || sending) {
if (sending && (cur_chr == '\\' || cur_chr == 0))
*s1++ = '\\';
*s1++ = cur_chr;
- }
- break;
}
+ break;
+ }
if (sending)
*s1++ = '\\';
*s1++ = cur_chr;
break;
- }
}
+ }
if (add_return)
*s1++ = '\r';
*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
+ * A modified version of 'strtok'. This version skips \ sequences.
*/
-void chat_expect(s)
-register char *s;
- {
- if (strcmp(s, "ABORT") == 0)
- {
- ++abort_next;
- return;
- }
- if (strcmp(s, "TIMEOUT") == 0)
- {
- ++timeout_next;
- return;
- }
+char *expect_strtok (s, term)
+ char *s, *term;
+{
+ static char *str = "";
+ int escape_flag = 0;
+ char *result;
- while (*s)
- {
- register char *hyphen;
+/*
+ * If a string was specified then do initial processing.
+ */
+ if (s)
+ str = s;
- for (hyphen = s; *hyphen; ++hyphen)
- if (*hyphen == '-')
- if (hyphen == s || hyphen[-1] != '\\')
- break;
-
- if (*hyphen == '-')
- {
- *hyphen = '\0';
+/*
+ * If this is the escape flag then reset it and ignore the character.
+ */
+ if (*str)
+ result = str;
+ else
+ result = (char *) 0;
- if (get_string(s))
- return;
- else
- {
- s = hyphen + 1;
+ while (*str) {
+ if (escape_flag) {
+ escape_flag = 0;
+ ++str;
+ continue;
+ }
- for (hyphen = s; *hyphen; ++hyphen)
- if (*hyphen == '-')
- if (hyphen == s || hyphen[-1] != '\\')
- break;
+ if (*str == '\\') {
+ ++str;
+ escape_flag = 1;
+ continue;
+ }
- if (*hyphen == '-')
- {
- *hyphen = '\0';
+/*
+ * If this is not in the termination string, continue.
+ */
+ if (strchr (term, *str) == (char *) 0) {
+ ++str;
+ continue;
+ }
- chat_send(s);
- s = hyphen + 1;
- }
- else
- {
- chat_send(s);
- return;
- }
- }
- }
- else
- if (get_string(s))
- return;
- else
- {
- if (fail_reason)
- syslog(LOG_INFO, "Failed (%s)", fail_reason);
- else
- syslog(LOG_INFO, "Failed");
+/*
+ * This is the terminator. Mark the end of the string and stop.
+ */
+ *str++ = '\0';
+ break;
+ }
+ return (result);
+}
- terminate(1);
- }
- }
+/*
+ * Process the expect string
+ */
+
+void chat_expect (s)
+char *s;
+{
+ char *expect;
+ char *reply;
+
+ if (strcmp(s, "HANGUP") == 0) {
+ ++hup_next;
+ return;
+ }
+
+ if (strcmp(s, "ABORT") == 0) {
+ ++abort_next;
+ return;
+ }
+
+ if (strcmp(s, "CLR_ABORT") == 0) {
+ ++clear_abort_next;
+ return;
+ }
+
+ if (strcmp(s, "REPORT") == 0) {
+ ++report_next;
+ return;
+ }
+
+ if (strcmp(s, "CLR_REPORT") == 0) {
+ ++clear_report_next;
+ return;
+ }
+
+ if (strcmp(s, "TIMEOUT") == 0) {
+ ++timeout_next;
+ return;
+ }
+
+ if (strcmp(s, "ECHO") == 0) {
+ ++echo_next;
+ return;
+ }
+
+ if (strcmp(s, "SAY") == 0) {
+ ++say_next;
+ return;
}
+/*
+ * Fetch the expect and reply string.
+ */
+ for (;;) {
+ expect = expect_strtok (s, "-");
+ s = (char *) 0;
+
+ if (expect == (char *) 0)
+ return;
+
+ reply = expect_strtok (s, "-");
+
+/*
+ * Handle the expect string. If successful then exit.
+ */
+ if (get_string (expect))
+ return;
+
+/*
+ * If there is a sub-reply string then send it. Otherwise any condition
+ * is terminal.
+ */
+ if (reply == (char *) 0 || exit_code != 3)
+ break;
+
+ chat_send (reply);
+ }
+
+/*
+ * The expectation did not occur. This is terminal.
+ */
+ if (fail_reason)
+ logf("Failed (%s)", fail_reason);
+ else
+ logf("Failed");
+ terminate(exit_code);
+}
+
+/*
+ * Translate the input character to the appropriate string for printing
+ * the data.
+ */
+
char *character(c)
int c;
- {
+{
static char string[10];
char *meta;
if (c < 32)
sprintf(string, "%s^%c", meta, (int)c + '@');
+ else if (c == 127)
+ sprintf(string, "%s^?", meta);
else
- if (c == 127)
- sprintf(string, "%s^?", meta);
- else
- sprintf(string, "%s%c", meta, c);
+ sprintf(string, "%s%c", meta, c);
return (string);
- }
+}
/*
* process the reply string
*/
void chat_send (s)
register char *s;
- {
- if (abort_next)
- {
- char *s1;
+{
+ if (say_next) {
+ say_next = 0;
+ s = clean(s,0);
+ write(2, s, strlen(s));
+ free(s);
+ return;
+ }
- abort_next = 0;
+ if (hup_next) {
+ hup_next = 0;
+ if (strcmp(s, "OFF") == 0)
+ signal(SIGHUP, SIG_IGN);
+ else
+ signal(SIGHUP, sighup);
+ return;
+ }
- if (n_aborts >= MAX_ABORTS)
- fatal("Too many ABORT strings");
+ if (echo_next) {
+ echo_next = 0;
+ echo = (strcmp(s, "ON") == 0);
+ return;
+ }
+ if (abort_next) {
+ char *s1;
+
+ abort_next = 0;
+
+ if (n_aborts >= MAX_ABORTS)
+ fatal(2, "Too many ABORT strings");
+
s1 = clean(s, 0);
-
- if (strlen(s1) > strlen(s) || strlen(s1) > sizeof fail_buffer - 1)
- {
- syslog(LOG_WARNING, "Illegal or too-long ABORT string ('%s')", s);
- die();
- }
+
+ if (strlen(s1) > strlen(s)
+ || strlen(s1) + 1 > sizeof(fail_buffer))
+ fatal(1, "Illegal or too-long ABORT string ('%v')", s);
abort_string[n_aborts++] = s1;
if (verbose)
- {
- logf("abort on (");
-
- for (s1 = s; *s1; ++s1)
- logf(character(*s1));
+ logf("abort on (%v)", s);
+ return;
+ }
- logf(")\n");
+ if (clear_abort_next) {
+ char *s1;
+ char *s2 = s;
+ int i;
+ int old_max;
+ int pack = 0;
+
+ clear_abort_next = 0;
+
+ s1 = clean(s, 0);
+
+ if (strlen(s1) > strlen(s)
+ || strlen(s1) + 1 > sizeof(fail_buffer))
+ fatal(1, "Illegal or too-long CLR_ABORT string ('%v')", s);
+
+ old_max = n_aborts;
+ for (i=0; i < n_aborts; i++) {
+ if ( strcmp(s1,abort_string[i]) == 0 ) {
+ free(abort_string[i]);
+ abort_string[i] = NULL;
+ pack++;
+ n_aborts--;
+ if (verbose)
+ logf("clear abort on (%v)", s);
}
}
- else
- if (timeout_next)
- {
- timeout_next = 0;
- timeout = atoi(s);
+ free(s1);
+ if (pack)
+ pack_array(abort_string,old_max);
+ return;
+ }
- if (timeout <= 0)
- timeout = DEFAULT_CHAT_TIMEOUT;
+ if (report_next) {
+ char *s1;
+
+ report_next = 0;
+ if (n_reports >= MAX_REPORTS)
+ fatal(2, "Too many REPORT strings");
+
+ s1 = clean(s, 0);
+
+ if (strlen(s1) > strlen(s) || strlen(s1) > sizeof fail_buffer - 1)
+ fatal(1, "Illegal or too-long REPORT string ('%v')", s);
+
+ report_string[n_reports++] = s1;
+
+ if (verbose)
+ logf("report (%v)", s);
+ return;
+ }
- if (verbose)
- {
- 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))
- {
- syslog(LOG_INFO, "Failed");
- terminate(1);
- }
+ if (clear_report_next) {
+ char *s1;
+ char *s2 = s;
+ int i;
+ int old_max;
+ int pack = 0;
+
+ clear_report_next = 0;
+
+ s1 = clean(s, 0);
+
+ if (strlen(s1) > strlen(s) || strlen(s1) > sizeof fail_buffer - 1)
+ fatal(1, "Illegal or too-long REPORT string ('%v')", s);
+
+ old_max = n_reports;
+ for (i=0; i < n_reports; i++) {
+ if ( strcmp(s1,report_string[i]) == 0 ) {
+ free(report_string[i]);
+ report_string[i] = NULL;
+ pack++;
+ n_reports--;
+ if (verbose)
+ logf("clear report (%v)", s);
}
+ }
+ free(s1);
+ if (pack)
+ pack_array(report_string,old_max);
+
+ return;
}
+ if (timeout_next) {
+ timeout_next = 0;
+ timeout = atoi(s);
+
+ if (timeout <= 0)
+ timeout = DEFAULT_CHAT_TIMEOUT;
+
+ if (verbose)
+ logf("timeout set to %d seconds", timeout);
+
+ return;
+ }
+
+ if (strcmp(s, "EOT") == 0)
+ s = "^D\\c";
+ else if (strcmp(s, "BREAK") == 0)
+ s = "\\K\\c";
+
+ if (!put_string(s))
+ fatal(1, "Failed");
+}
+
int get_char()
- {
+{
int status;
char c;
status = read(0, &c, 1);
- switch (status)
- {
- case 1:
- return ((int)c & 0x7F);
+ switch (status) {
+ case 1:
+ return ((int)c & 0x7F);
- default:
- syslog(LOG_WARNING, "warning: read() on stdin returned %d",
- status);
+ default:
+ logf("warning: read() on stdin returned %d", status);
- case -1:
- if ((status = fcntl(0, F_GETFL, 0)) == -1)
- sysfatal("Can't get file mode flags on stdin");
- else
- if (fcntl(0, F_SETFL, status & ~FNDELAY) == -1)
- sysfatal("Can't set file mode flags on stdin");
+ case -1:
+ if ((status = fcntl(0, F_GETFL, 0)) == -1)
+ fatal(2, "Can't get file mode flags on stdin: %m");
- return (-1);
- }
+ if (fcntl(0, F_SETFL, status & ~O_NONBLOCK) == -1)
+ fatal(2, "Can't set file mode flags on stdin: %m");
+
+ return (-1);
}
+}
int put_char(c)
int c;
- {
+{
int status;
+ char ch = c;
- delay();
+ usleep(10000); /* inter-character typing delay (?) */
- status = write(1, &c, 1);
+ status = write(1, &ch, 1);
- switch (status)
- {
- case 1:
- return (0);
-
- default:
- syslog(LOG_WARNING, "warning: write() on stdout returned %d",
- status);
-
- case -1:
- if ((status = fcntl(0, F_GETFL, 0)) == -1)
- sysfatal("Can't get file mode flags on stdin");
- else
- if (fcntl(0, F_SETFL, status & ~FNDELAY) == -1)
- sysfatal("Can't set file mode flags on stdin");
+ switch (status) {
+ case 1:
+ return (0);
+
+ default:
+ logf("warning: write() on stdout returned %d", status);
+
+ case -1:
+ if ((status = fcntl(0, F_GETFL, 0)) == -1)
+ fatal(2, "Can't get file mode flags on stdin, %m");
- return (-1);
- }
+ if (fcntl(0, F_SETFL, status & ~O_NONBLOCK) == -1)
+ fatal(2, "Can't set file mode flags on stdin: %m");
+
+ return (-1);
}
+}
int write_char (c)
int c;
- {
- if (alarmed || put_char(c) < 0)
- {
- extern int errno;
-
- alarm(0); alarmed = 0;
+{
+ if (alarmed || put_char(c) < 0) {
+ alarm(0);
+ alarmed = 0;
- if (verbose)
- {
+ if (verbose) {
if (errno == EINTR || errno == EWOULDBLOCK)
- syslog(LOG_INFO, " -- write timed out");
+ logf(" -- write timed out");
else
- syslog(LOG_INFO, " -- write failed: %m");
- }
- return (0);
+ logf(" -- write failed: %m");
}
- return (1);
+ return (0);
}
+ return (1);
+}
int put_string (s)
register char *s;
- {
+{
+ quiet = 0;
s = clean(s, 1);
- if (verbose)
- {
- logf("send (");
-
+ if (verbose) {
if (quiet)
- logf("??????");
+ logf("send (??????)");
else
- {
- register char *s1 = s;
-
- for (s1 = s; *s1; ++s1)
- logf(character(*s1));
- }
-
- logf(")\n");
- }
+ logf("send (%v)", s);
+ }
alarm(timeout); alarmed = 0;
- while (*s)
- {
+ while (*s) {
register char c = *s++;
- if (c != '\\')
- {
+ if (c != '\\') {
if (!write_char (c))
return 0;
continue;
- }
+ }
c = *s++;
- switch (c)
- {
+ switch (c) {
case 'd':
sleep(1);
break;
break;
case 'p':
- usleep(10000); /* 1/100th of a second. */
+ usleep(10000); /* 1/100th of a second (arg is microseconds) */
break;
default:
if (!write_char (c))
return 0;
break;
- }
}
+ }
alarm(0);
alarmed = 0;
return (1);
+}
+
+/*
+ * Echo a character to stderr.
+ * When called with -1, a '\n' character is generated when
+ * the cursor is not at the beginning of a line.
+ */
+void echo_stderr(n)
+int n;
+{
+ static int need_lf;
+ char *s;
+
+ switch (n) {
+ case '\r': /* ignore '\r' */
+ break;
+ case -1:
+ if (need_lf == 0)
+ break;
+ /* fall through */
+ case '\n':
+ write(2, "\n", 1);
+ need_lf = 0;
+ break;
+ default:
+ s = character(n);
+ write(2, s, strlen(s));
+ need_lf = 1;
+ break;
}
+}
/*
* 'Wait for' this string to appear on this file descriptor.
*/
int get_string(string)
register char *string;
- {
+{
char temp[STR_LEN];
int c, printed = 0, len, minlen;
register char *s = temp, *end = s + STR_LEN;
+ char *logged = temp;
fail_reason = (char *)0;
string = clean(string, 0);
minlen = (len > sizeof(fail_buffer)? len: sizeof(fail_buffer)) - 1;
if (verbose)
- {
- register char *s1;
+ logf("expect (%v)", string);
- logf("expect (");
+ if (len > STR_LEN) {
+ logf("expect string is too long");
+ exit_code = 1;
+ return 0;
+ }
- for (s1 = string; *s1; ++s1)
- logf(character(*s1));
+ if (len == 0) {
+ if (verbose)
+ logf("got it");
+ return (1);
+ }
- logf(")\n");
- }
+ alarm(timeout);
+ alarmed = 0;
- if (len > STR_LEN)
- {
- syslog(LOG_INFO, "expect string is too long");
- return 0;
+ while ( ! alarmed && (c = get_char()) >= 0) {
+ int n, abort_len, report_len;
+
+ if (echo)
+ echo_stderr(c);
+ if (verbose && c == '\n') {
+ if (s == logged)
+ logf(""); /* blank line */
+ else
+ logf("%0.*v", s - logged, logged);
+ logged = s + 1;
}
- if (len == 0)
- {
- if (verbose)
- {
- syslog(LOG_INFO, "got it");
- }
+ *s++ = c;
- return (1);
+ if (verbose && s >= logged + 80) {
+ logf("%0.*v", s - logged, logged);
+ logged = s;
}
- alarm(timeout); alarmed = 0;
+ if (Verbose) {
+ if (c == '\n')
+ fputc( '\n', stderr );
+ else if (c != '\r')
+ fprintf( stderr, "%s", character(c) );
+ }
- while ( ! alarmed && (c = get_char()) >= 0)
- {
- int n, abort_len;
+ if (!report_gathering) {
+ for (n = 0; n < n_reports; ++n) {
+ if ((report_string[n] != (char*) NULL) &&
+ s - temp >= (report_len = strlen(report_string[n])) &&
+ strncmp(s - report_len, report_string[n], report_len) == 0) {
+ time_t time_now = time ((time_t*) NULL);
+ struct tm* tm_now = localtime (&time_now);
- if (verbose)
- {
- if (c == '\n')
- logf("\n");
- else
- logf(character(c));
- }
+ strftime (report_buffer, 20, "%b %d %H:%M:%S ", tm_now);
+ strcat (report_buffer, report_string[n]);
- *s++ = c;
+ report_string[n] = (char *) NULL;
+ report_gathering = 1;
+ break;
+ }
+ }
+ }
+ else {
+ if (!iscntrl (c)) {
+ int rep_len = strlen (report_buffer);
+ report_buffer[rep_len] = c;
+ report_buffer[rep_len + 1] = '\0';
+ }
+ else {
+ report_gathering = 0;
+ fprintf (report_fp, "chat: %s\n", report_buffer);
+ }
+ }
if (s - temp >= len &&
c == string[len - 1] &&
- strncmp(s - len, string, len) == 0)
- {
- if (verbose)
- {
+ strncmp(s - len, string, len) == 0) {
+ if (verbose) {
+ if (s > logged)
+ logf("%0.*v", s - logged, logged);
logf(" -- got it\n");
- }
+ }
- alarm(0); alarmed = 0;
+ alarm(0);
+ alarmed = 0;
return (1);
- }
+ }
- for (n = 0; n < n_aborts; ++n)
+ for (n = 0; n < n_aborts; ++n) {
if (s - temp >= (abort_len = strlen(abort_string[n])) &&
- strncmp(s - abort_len, abort_string[n], abort_len) == 0)
- {
- if (verbose)
- {
- logf(" -- failed\n");
- }
+ strncmp(s - abort_len, abort_string[n], abort_len) == 0) {
+ if (verbose) {
+ if (s > logged)
+ logf("%0.*v", s - logged, logged);
+ logf(" -- failed");
+ }
- alarm(0); alarmed = 0;
+ alarm(0);
+ alarmed = 0;
+ exit_code = n + 4;
strcpy(fail_reason = fail_buffer, abort_string[n]);
return (0);
- }
+ }
+ }
- if (s >= end)
- {
- strncpy(temp, s - minlen, minlen);
- s = temp + minlen;
+ if (s >= end) {
+ if (logged < s - minlen) {
+ logf("%0.*v", s - logged, logged);
+ logged = s;
}
+ s -= minlen;
+ memmove(temp, s, minlen);
+ logged = temp + (logged - s);
+ s = temp + minlen;
+ }
if (alarmed && verbose)
- syslog(LOG_WARNING, "warning: alarm synchronization problem");
- }
+ logf("warning: alarm synchronization problem");
+ }
alarm(0);
- if (verbose && printed)
- {
+ if (verbose && printed) {
if (alarmed)
- logf(" -- read timed out\n");
+ logf(" -- read timed out");
else
- {
- logflush();
- syslog(LOG_INFO, " -- read failed: %m");
- }
- }
+ logf(" -- read failed: %m");
+ }
- alarmed = 0;
+ exit_code = 3;
+ alarmed = 0;
return (0);
- }
+}
-#ifdef ultrix
-#undef NO_USLEEP
+#ifdef NO_USLEEP
#include <sys/types.h>
#include <sys/time.h>
usleep( usec ) /* returns 0 if ok, else -1 */
long usec; /* delay in microseconds */
{
- static struct /* `timeval' */
- {
- long tv_sec; /* seconds */
- long tv_usec; /* microsecs */
- } delay; /* _select() timeout */
+ static struct { /* `timeval' */
+ long tv_sec; /* seconds */
+ long tv_usec; /* microsecs */
+ } delay; /* _select() timeout */
- delay.tv_sec = usec / 1000000L;
+ delay.tv_sec = usec / 1000000L;
delay.tv_usec = usec % 1000000L;
- return select( 0, (long *)0, (long *)0, (long *)0, &delay );
+ return select(0, (long *)0, (long *)0, (long *)0, &delay);
}
#endif
+void
+pack_array (array, end)
+ char **array; /* The address of the array of string pointers */
+ int end; /* The index of the next free entry before CLR_ */
+{
+ int i, j;
+
+ for (i = 0; i < end; i++) {
+ if (array[i] == NULL) {
+ for (j = i+1; j < end; ++j)
+ if (array[j] != NULL)
+ array[i++] = array[j];
+ for (; i < end; ++i)
+ array[i] = NULL;
+ break;
+ }
+ }
+}
+
/*
- * Delay an amount appropriate for between typed characters.
+ * vfmtmsg - format a message into a buffer. Like vsprintf except we
+ * also specify the length of the output buffer, and we handle the
+ * %m (error message) format.
+ * Doesn't do floating-point formats.
+ * Returns the number of chars put into buf.
*/
-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 */
+#define OUTCHAR(c) (buflen > 0? (--buflen, *buf++ = (c)): 0)
+
+int
+vfmtmsg(buf, buflen, fmt, args)
+ char *buf;
+ int buflen;
+ const char *fmt;
+ va_list args;
+{
+ int c, i, n;
+ int width, prec, fillch;
+ int base, len, neg, quoted;
+ unsigned long val = 0;
+ char *str, *buf0;
+ const char *f;
+ unsigned char *p;
+ char num[32];
+ time_t t;
+ static char hexchars[] = "0123456789abcdef";
+
+ buf0 = buf;
+ --buflen;
+ while (buflen > 0) {
+ for (f = fmt; *f != '%' && *f != 0; ++f)
+ ;
+ if (f > fmt) {
+ len = f - fmt;
+ if (len > buflen)
+ len = buflen;
+ memcpy(buf, fmt, len);
+ buf += len;
+ buflen -= len;
+ fmt = f;
+ }
+ if (*fmt == 0)
+ break;
+ c = *++fmt;
+ width = prec = 0;
+ fillch = ' ';
+ if (c == '0') {
+ fillch = '0';
+ c = *++fmt;
+ }
+ if (c == '*') {
+ width = va_arg(args, int);
+ c = *++fmt;
+ } else {
+ while (isdigit(c)) {
+ width = width * 10 + c - '0';
+ c = *++fmt;
+ }
+ }
+ if (c == '.') {
+ c = *++fmt;
+ if (c == '*') {
+ prec = va_arg(args, int);
+ c = *++fmt;
+ } else {
+ while (isdigit(c)) {
+ prec = prec * 10 + c - '0';
+ c = *++fmt;
+ }
+ }
+ }
+ str = 0;
+ base = 0;
+ neg = 0;
+ ++fmt;
+ switch (c) {
+ case 'd':
+ i = va_arg(args, int);
+ if (i < 0) {
+ neg = 1;
+ val = -i;
+ } else
+ val = i;
+ base = 10;
+ break;
+ case 'o':
+ val = va_arg(args, unsigned int);
+ base = 8;
+ break;
+ case 'x':
+ val = va_arg(args, unsigned int);
+ base = 16;
+ break;
+ case 'p':
+ val = (unsigned long) va_arg(args, void *);
+ base = 16;
+ neg = 2;
+ break;
+ case 's':
+ str = va_arg(args, char *);
+ break;
+ case 'c':
+ num[0] = va_arg(args, int);
+ num[1] = 0;
+ str = num;
+ break;
+ case 'm':
+ str = strerror(errno);
+ break;
+ case 'v': /* "visible" string */
+ case 'q': /* quoted string */
+ quoted = c == 'q';
+ p = va_arg(args, unsigned char *);
+ if (fillch == '0' && prec > 0) {
+ n = prec;
+ } else {
+ n = strlen((char *)p);
+ if (prec > 0 && prec < n)
+ n = prec;
+ }
+ while (n > 0 && buflen > 0) {
+ c = *p++;
+ --n;
+ if (!quoted && c >= 0x80) {
+ OUTCHAR('M');
+ OUTCHAR('-');
+ c -= 0x80;
+ }
+ if (quoted && (c == '"' || c == '\\'))
+ OUTCHAR('\\');
+ if (c < 0x20 || (0x7f <= c && c < 0xa0)) {
+ if (quoted) {
+ OUTCHAR('\\');
+ switch (c) {
+ case '\t': OUTCHAR('t'); break;
+ case '\n': OUTCHAR('n'); break;
+ case '\b': OUTCHAR('b'); break;
+ case '\f': OUTCHAR('f'); break;
+ default:
+ OUTCHAR('x');
+ OUTCHAR(hexchars[c >> 4]);
+ OUTCHAR(hexchars[c & 0xf]);
+ }
+ } else {
+ if (c == '\t')
+ OUTCHAR(c);
+ else {
+ OUTCHAR('^');
+ OUTCHAR(c ^ 0x40);
+ }
+ }
+ } else
+ OUTCHAR(c);
+ }
+ continue;
+ default:
+ *buf++ = '%';
+ if (c != '%')
+ --fmt; /* so %z outputs %z etc. */
+ --buflen;
+ continue;
+ }
+ if (base != 0) {
+ str = num + sizeof(num);
+ *--str = 0;
+ while (str > num + neg) {
+ *--str = hexchars[val % base];
+ val = val / base;
+ if (--prec <= 0 && val == 0)
+ break;
+ }
+ switch (neg) {
+ case 1:
+ *--str = '-';
+ break;
+ case 2:
+ *--str = 'x';
+ *--str = '0';
+ break;
+ }
+ len = num + sizeof(num) - 1 - str;
+ } else {
+ len = strlen(str);
+ if (prec > 0 && len > prec)
+ len = prec;
+ }
+ if (width > 0) {
+ if (width > buflen)
+ width = buflen;
+ if ((n = width - len) > 0) {
+ buflen -= n;
+ for (; n > 0; --n)
+ *buf++ = fillch;
+ }
+ }
+ if (len > buflen)
+ len = buflen;
+ memcpy(buf, str, len);
+ buf += len;
+ buflen -= len;
}
+ *buf = 0;
+ return buf - buf0;
+}
projects / ppp.git / blobdiff