[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/pppd/chat/chat.c b/ap/app/pppd/chat/chat.c
new file mode 100644
index 0000000..a399892
--- /dev/null
+++ b/ap/app/pppd/chat/chat.c
@@ -0,0 +1,1998 @@
+/*
+ * 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.
+ *
+ * -----------------
+ * 21st March 2003 - added network/telnet code option <davidm@snapgear.com>
+ * - added -R (truncated/created report file option)
+ *
+ * 22-May-99 added environment substitutuion, enabled with -E switch.
+ * Andreas Arens <andras@cityweb.de>.
+ *
+ * 12-May-99 added a feature to read data to be sent from a file,
+ * if the send string starts with @. Idea from gpk <gpk@onramp.net>.
+ *
+ * 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>
+ *
+ *
+ * The original author is:
+ *
+ * Karl Fox <karl@MorningStar.Com>
+ * Morning Star Technologies, Inc.
+ * 1760 Zollinger Road
+ * Columbus, OH 43221
+ * (614)451-1883
+ *
+ */
+
+#ifndef __STDC__
+#define const
+#endif
+
+#ifndef lint
+static const char rcsid[] = "$Id: chat.c,v 1.8 2007-10-31 03:38:05 davidm 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>
+
+#ifndef TERMIO
+#undef TERMIOS
+#define TERMIOS
+#endif
+
+#ifdef TERMIO
+#include <termio.h>
+#endif
+#ifdef TERMIOS
+#include <termios.h>
+#endif
+
+#define STR_LEN 1024
+
+#ifndef SIGTYPE
+#define SIGTYPE void
+#endif
+
+#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
+
+#ifdef SUNOS
+extern int sys_nerr;
+extern char *sys_errlist[];
+#define memmove(to, from, n) bcopy(from, to, n)
+#define strerror(n) ((unsigned)(n) < sys_nerr? sys_errlist[(n)] :\
+ "unknown error")
+#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=='-'\
+ &&!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)
+#define OPTONLYARG(c,v) (_O&2&&**v?(_O=1,--c,*v++):(char*)0)
+#define ARG(c,v) (c?(--c,*v++):(char*)0)
+
+static int _O = 0; /* Internal state */
+/*************** Micro getopt() *********************************************/
+
+char *program_name;
+
+#define MAX_ABORTS 50
+#define MAX_REPORTS 50
+#define DEFAULT_CHAT_TIMEOUT 45
+
+int echo = 0;
+int verbose = 0;
+int to_log = 1;
+int to_stderr = 0;
+int Verbose = 0;
+int quiet = 0;
+int report = 0;
+int use_env = 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;
+char *device = 0;
+//#define syslog(...)
+#ifdef ENABLE_NETWORK_SUPPORT
+
+int network = 0;
+char *net_host = NULL;
+int net_port = 23; /* telnet by default */
+
+#define IAC 0xff
+#define DONT 0xfe
+#define DO 0xfd
+#define WONT 0xfc
+#define WILL 0xfb
+
+extern int net_get_char(unsigned char *cp);
+extern void net_open();
+
+#endif /* ENABLE_NETWORK_SUPPORT */
+
+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, echo_next = 0;
+int clear_abort_next = 0;
+
+char *report_string[MAX_REPORTS] ;
+char report_buffer[256] ;
+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));
+char *grow __P((char *s, char **p, size_t len));
+void usage __P((void));
+void msgf __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));
+SIGTYPE sighup __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));
+int get_string __P((register char *string));
+int put_string __P((register char *s));
+int write_char __P((int c));
+int put_char __P((int c));
+int get_char __P((void));
+void chat_send __P((register char *s));
+char *character __P((int c));
+void chat_expect __P((register char *s));
+char *clean __P((register char *s, int sending));
+void break_sequence __P((void));
+void terminate __P((int status));
+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(2, "memory error!");
+
+ memcpy (ans, b, c);
+ return ans;
+}
+
+void *copy_of (s)
+char *s;
+{
+ return dup_mem (s, strlen (s) + 1);
+}
+
+/* grow a char buffer and keep a pointer offset */
+char *grow(s, p, len)
+char *s;
+char **p;
+size_t len;
+{
+ size_t l = *p - s; /* save p as distance into s */
+
+ s = realloc(s, len);
+ if (!s)
+ fatal(2, "memory error!");
+ *p = s + l; /* restore p */
+ return s;
+}
+
+/*
+ * chat [ -v ] [ -E ] [ -T number ] [ -U number ] [ -t timeout ] [ -f chat-file ] \
+ * [ -r report-file ] [-d device] \
+ * [...[[expect[-say[-expect...]] say expect[-say[-expect]] ...]]]
+ *
+ * Perform a UUCP-dialer-like chat script on stdin and stdout.
+ * (or the given device if specified)
+ */
+int
+main(argc, argv)
+ int argc;
+ char **argv;
+{
+ int option;
+ char *arg;
+ program_name = *argv;
+#ifndef EMBED
+//aaaaaaaa
+ //tzset();
+#endif
+
+ while ((option = OPTION(argc, argv)) != 0) {
+ switch (option) {
+ case 'e':
+ ++echo;
+ break;
+
+ case 'E':
+ ++use_env;
+ break;
+
+ case 'v':
+ ++verbose;
+ break;
+
+#ifdef ENABLE_NETWORK_SUPPORT
+ case 'h':
+ ++network;
+ if ((arg = OPTARG(argc, argv)) != NULL)
+ net_host = copy_of(arg);
+ else
+ usage();
+ break;
+
+ case 'p':
+ if ((arg = OPTARG(argc, argv)) != NULL)
+ net_port = atoi(arg);
+ else
+ usage();
+ break;
+#endif
+
+ case 'V':
+ ++Verbose;
+ break;
+
+ case 's':
+ ++to_stderr;
+ break;
+
+ case 'S':
+ to_log = 0;
+ break;
+
+ case 'f':
+ if ((arg = OPTARG(argc, argv)) != NULL)
+ chat_file = copy_of(arg);
+ else
+ usage();
+ break;
+
+ case 't':
+ if ((arg = OPTARG(argc, argv)) != NULL)
+ timeout = atoi(arg);
+ else
+ usage();
+ break;
+
+ case 'd':
+ if ((arg = OPTARG(argc, argv)) != NULL)
+ {
+ //syslog(LOG_ERR,"device is %s", arg);
+ device = arg;
+ }
+ else
+ usage();
+ break;
+
+ case 'r':
+ 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, option == 'r' ? "a" : "w");
+ 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);
+#else
+ openlog("chat", LOG_PID | LOG_NDELAY, LOG_LOCAL2);
+
+ if (verbose)
+ setlogmask(LOG_UPTO(LOG_INFO));
+ else
+ setlogmask(LOG_UPTO(LOG_WARNING));
+#endif
+ }
+
+ if (device != 0) {
+ int fd = open(device, O_RDWR, S_IRUSR | S_IWUSR);
+ if (fd == -1)
+ usage();
+ dup2(fd, 0);
+ dup2(fd, 1);
+ }
+
+ init();
+
+ if (chat_file != NULL) {
+ arg = ARG(argc, argv);
+ if (arg != NULL)
+ usage();
+ else
+ do_file (chat_file);
+ } else {
+ while ((arg = ARG(argc, argv)) != NULL) {
+ chat_expect(arg);
+
+ 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, sendflg;
+ char *sp, *arg, quote;
+ char buf [STR_LEN];
+ FILE *cfp;
+ //syslog(LOG_ERR,"do_file");
+ 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) {
+ sp = strchr (buf, '\n');
+ if (sp)
+ *sp = '\0';
+
+ linect++;
+ sp = buf;
+
+ /* 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 == '\'') {
+ quote = *sp++;
+ arg = sp;
+ //syslog(LOG_ERR," arg is %s", arg);
+ while (*sp != quote) {
+ if (*sp == '\0')
+ fatal(1, "unterminated quote (line %d)", linect);
+
+ if (*sp++ == '\\') {
+ if (*sp != '\0')
+ ++sp;
+ }
+ }
+ }
+ else {
+ arg = sp;
+ //syslog(LOG_ERR," arg is %s", arg);
+ while (*sp != '\0' && *sp != ' ' && *sp != '\t')
+ ++sp;
+ }
+
+ if (*sp != '\0')
+ *sp++ = '\0';
+
+ if (sendflg)
+ {
+ //syslog(LOG_ERR,"chat_send arg is %s", arg);
+ chat_send (arg);
+ }
+ else
+ {
+ //syslog(LOG_ERR,"chat_expect arg is %s", arg);
+ chat_expect (arg);
+ }
+ sendflg = !sendflg;
+ }
+ }
+ //syslog(LOG_ERR,"close file done");
+ fclose (cfp);
+}
+
+/*
+ * We got an error parsing the command line.
+ */
+void usage()
+{
+ fprintf(stderr, "\
+Usage: %s [-e] [-E] [-v] [-V] [-t timeout] [-r report-file] [-R report-file]\n"
+#ifdef ENABLE_NETWORK_SUPPORT
+" [-h hostname] [-p tcp-port]\n"
+#endif /* ENABLE_NETWORK_SUPPORT */
+" [-T phone-number] [-U phone-number2] {-f chat-file | chat-script}\n", program_name);
+ exit(1);
+}
+
+char line[1024];
+
+/*
+ * Send a message to syslog and/or stderr.
+ */
+void msgf __V((const char *fmt, ...))
+{
+ va_list args;
+
+#ifdef __STDC__
+ va_start(args, fmt);
+#else
+ char *fmt;
+ va_start(args);
+ fmt = va_arg(args, char *);
+#endif
+
+ vfmtmsg(line, sizeof(line), fmt, args);
+ if (to_log)
+ //syslog(LOG_INFO, "%s", line);
+ if (to_stderr)
+ fprintf(stderr, "%s\n", line);
+}
+
+/*
+ * Print an error message and terminate.
+ */
+
+void fatal __V((int code, const char *fmt, ...))
+{
+ va_list args;
+
+#ifdef __STDC__
+ va_start(args, fmt);
+#else
+ int code;
+ char *fmt;
+ va_start(args);
+ code = va_arg(args, int);
+ fmt = va_arg(args, char *);
+#endif
+
+ 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() */
+
+ if ((flags = fcntl(0, F_GETFL, 0)) == -1)
+ 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)
+ msgf("alarm");
+}
+
+void unalarm()
+{
+ int flags;
+
+ if ((flags = fcntl(0, F_GETFL, 0)) == -1)
+ 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(2, "SIGINT");
+}
+
+SIGTYPE sigterm(signo)
+int signo;
+{
+ fatal(2, "SIGTERM");
+}
+
+SIGTYPE sighup(signo)
+int signo;
+{
+ fatal(2, "SIGHUP");
+}
+
+void init()
+{
+ signal(SIGINT, sigint);
+ signal(SIGTERM, sigterm);
+ signal(SIGHUP, sighup);
+
+#ifdef ENABLE_NETWORK_SUPPORT
+ if (network)
+ net_open();
+ else
+#endif
+ set_tty_parameters();
+ signal(SIGALRM, sigalrm);
+ alarm(0);
+ alarmed = 0;
+}
+
+void set_tty_parameters()
+{
+#if defined(get_term_param)
+ term_parms t;
+
+ if (get_term_param (&t) < 0)
+#ifndef EMBED
+ fatal(2, "Can't get terminal parameters: %m");
+#else
+ syslog(LOG_ERR, "Can't get terminal parameters: %m");
+#endif
+
+ 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;
+
+ if (set_term_param (&t) < 0)
+#ifndef EMBED
+ fatal(2, "Can't set terminal parameters: %m");
+#else
+ syslog(LOG_ERR, "Can't set terminal parameters: %m");
+#endif
+#endif
+}
+
+void break_sequence()
+{
+#ifdef TERMIOS
+ tcsendbreak (0, 0);
+#endif
+}
+
+void terminate(status)
+int status;
+{
+ static int terminating = 0;
+
+ if (terminating)
+ exit(status);
+ terminating = 1;
+ echo_stderr(-1);
+/*
+ * Allow the last of the report string to be gathered before we terminate.
+ */
+ if (report_gathering &&
+ report_file != (char *) 0 && report_fp != (FILE *) NULL) {
+ 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 (report_file != (char *) 0 && report_fp != (FILE *) NULL) {
+ 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)
+#ifndef EMBED
+ fatal(2, "Can't restore terminal parameters: %m");
+#else
+ syslog(LOG_ERR, "Can't restore terminal parameters: %m");
+#endif
+ }
+#endif
+ syslog(LOG_ERR,"terminate done");
+ exit(status);
+}
+
+/*
+ * 'Clean up' this string.
+ */
+char *clean(s, sending)
+register char *s;
+int sending; /* set to 1 when sending (putting) this string. */
+{
+ char cur_chr;
+ char *s1, *p, *phchar;
+ int add_return = sending;
+ size_t len = strlen(s) + 3; /* see len comments below */
+
+#define isoctal(chr) (((chr) >= '0') && ((chr) <= '7'))
+#define isalnumx(chr) ((((chr) >= '0') && ((chr) <= '9')) \
+ || (((chr) >= 'a') && ((chr) <= 'z')) \
+ || (((chr) >= 'A') && ((chr) <= 'Z')) \
+ || (chr) == '_')
+
+ p = s1 = malloc(len);
+ if (!p)
+ fatal(2, "memory error!");
+ while (*s) {
+ cur_chr = *s++;
+ if (cur_chr == '^') {
+ cur_chr = *s++;
+ if (cur_chr == '\0') {
+ *p++ = '^';
+ break;
+ }
+ cur_chr &= 0x1F;
+ if (cur_chr != 0) {
+ *p++ = cur_chr;
+ }
+ continue;
+ }
+
+ if (use_env && cur_chr == '$') { /* ARI */
+ char c;
+
+ phchar = s;
+ while (isalnumx(*s))
+ s++;
+ c = *s; /* save */
+ *s = '\0';
+ phchar = getenv(phchar);
+ *s = c; /* restore */
+ if (phchar) {
+ len += strlen(phchar);
+ s1 = grow(s1, &p, len);
+ while (*phchar)
+ *p++ = *phchar++;
+ }
+ continue;
+ }
+
+ if (cur_chr != '\\') {
+ *p++ = cur_chr;
+ continue;
+ }
+
+ cur_chr = *s++;
+ if (cur_chr == '\0') {
+ if (sending) {
+ *p++ = '\\';
+ *p++ = '\\'; /* +1 for len */
+ }
+ break;
+ }
+
+ switch (cur_chr) {
+ case 'b':
+ *p++ = '\b';
+ break;
+
+ case 'c':
+ if (sending && *s == '\0')
+ add_return = 0;
+ else
+ *p++ = cur_chr;
+ break;
+
+ case '\\':
+ case 'K':
+ case 'p':
+ case 'd':
+ if (sending)
+ *p++ = '\\';
+ *p++ = cur_chr;
+ break;
+
+ case 'T':
+ if (sending && phone_num) {
+ len += strlen(phone_num);
+ s1 = grow(s1, &p, len);
+ for (phchar = phone_num; *phchar != '\0'; phchar++)
+ *p++ = *phchar;
+ }
+ else {
+ *p++ = '\\';
+ *p++ = 'T';
+ }
+ break;
+
+ case 'U':
+ if (sending && phone_num2) {
+ len += strlen(phone_num2);
+ s1 = grow(s1, &p, len);
+ for (phchar = phone_num2; *phchar != '\0'; phchar++)
+ *p++ = *phchar;
+ }
+ else {
+ *p++ = '\\';
+ *p++ = 'U';
+ }
+ break;
+
+ case 'q':
+ quiet = 1;
+ break;
+
+ case 'r':
+ *p++ = '\r';
+ break;
+
+ case 'n':
+ *p++ = '\n';
+ break;
+
+ case 's':
+ *p++ = ' ';
+ break;
+
+ case 't':
+ *p++ = '\t';
+ break;
+
+ case 'N':
+ if (sending) {
+ *p++ = '\\';
+ *p++ = '\0';
+ }
+ else
+ *p++ = 'N';
+ break;
+
+ case '$': /* ARI */
+ if (use_env) {
+ *p++ = cur_chr;
+ break;
+ }
+ /* FALL THROUGH */
+
+ 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))
+ *p++ = '\\';
+ *p++ = cur_chr;
+ }
+ break;
+ }
+
+ if (sending)
+ *p++ = '\\';
+ *p++ = cur_chr;
+ break;
+ }
+ }
+
+ if (add_return)
+ *p++ = '\r'; /* +2 for len */
+
+ *p = '\0'; /* +3 for len */
+ return s1;
+}
+
+/*
+ * A modified version of 'strtok'. This version skips \ sequences.
+ */
+
+char *expect_strtok (s, term)
+ char *s, *term;
+{
+ static char *str = "";
+ int escape_flag = 0;
+ char *result;
+
+/*
+ * If a string was specified then do initial processing.
+ */
+ if (s)
+ str = s;
+
+/*
+ * If this is the escape flag then reset it and ignore the character.
+ */
+ if (*str)
+ result = str;
+ else
+ result = (char *) 0;
+
+ while (*str) {
+ if (escape_flag) {
+ escape_flag = 0;
+ ++str;
+ continue;
+ }
+
+ if (*str == '\\') {
+ ++str;
+ escape_flag = 1;
+ continue;
+ }
+
+/*
+ * If this is not in the termination string, continue.
+ */
+ if (strchr (term, *str) == (char *) 0) {
+ ++str;
+ continue;
+ }
+
+/*
+ * This is the terminator. Mark the end of the string and stop.
+ */
+ *str++ = '\0';
+ break;
+ }
+ return (result);
+}
+
+/*
+ * 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)
+ msgf("Failed (%s)", fail_reason);
+ else
+ msgf("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;
+
+ meta = (c & 0x80) ? "M-" : "";
+ c &= 0x7F;
+
+ if (c < 32)
+ sprintf(string, "%s^%c", meta, (int)c + '@');
+ else if (c == 127)
+ sprintf(string, "%s^?", meta);
+ else
+ sprintf(string, "%s%c", meta, c);
+
+ return (string);
+}
+
+/*
+ * process the reply string
+ */
+void chat_send (s)
+register char *s;
+{
+ char file_data[STR_LEN];
+
+ if (say_next) {
+ say_next = 0;
+ s = clean(s, 1);
+ write(2, s, strlen(s));
+ free(s);
+ return;
+ }
+
+ if (hup_next) {
+ hup_next = 0;
+ if (strcmp(s, "OFF") == 0)
+ signal(SIGHUP, SIG_IGN);
+ else
+ signal(SIGHUP, sighup);
+ return;
+ }
+
+ 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) + 1 > sizeof(fail_buffer))
+ fatal(1, "Illegal or too-long ABORT string ('%v')", s);
+
+ abort_string[n_aborts++] = s1;
+
+ if (verbose)
+ msgf("abort on (%v)", s);
+ return;
+ }
+
+ if (clear_abort_next) {
+ char *s1;
+ 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)
+ msgf("clear abort on (%v)", s);
+ }
+ }
+ free(s1);
+ if (pack)
+ pack_array(abort_string,old_max);
+ return;
+ }
+
+ 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)
+ msgf("report (%v)", s);
+ return;
+ }
+
+ if (clear_report_next) {
+ char *s1;
+ 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)
+ msgf("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)
+ msgf("timeout set to %d seconds", timeout);
+
+ return;
+ }
+
+ /*
+ * The syntax @filename means read the string to send from the
+ * file `filename'.
+ */
+ if (s[0] == '@') {
+ /* skip the @ and any following white-space */
+ char *fn = s;
+ while (*++fn == ' ' || *fn == '\t')
+ ;
+
+ if (*fn != 0) {
+ FILE *f;
+ int n = 0;
+
+ /* open the file and read until STR_LEN-1 bytes or end-of-file */
+ f = fopen(fn, "r");
+ if (f == NULL)
+ fatal(1, "%s -- open failed: %m", fn);
+ while (n < STR_LEN - 1) {
+ int nr = fread(&file_data[n], 1, STR_LEN - 1 - n, f);
+ if (nr < 0)
+ fatal(1, "%s -- read error", fn);
+ if (nr == 0)
+ break;
+ n += nr;
+ }
+ fclose(f);
+
+ /* use the string we got as the string to send,
+ but trim off the final newline if any. */
+ if (n > 0 && file_data[n-1] == '\n')
+ --n;
+ file_data[n] = 0;
+ s = file_data;
+ }
+ }
+
+ 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;
+ unsigned char c;
+
+ status = read(0, &c, 1);
+ switch (status) {
+ case 1:
+#ifdef ENABLE_NETWORK_SUPPORT
+ if (network && c == IAC) {
+ if (net_get_char(&c) != -1)
+ return ((int)c & 0x7F);
+ /* drop through to error below */
+ } else
+#endif
+ return ((int)c & 0x7F);
+
+ default:
+ msgf("warning: read() on stdin returned %d", status);
+
+ case -1:
+ if ((status = fcntl(0, F_GETFL, 0)) == -1)
+ fatal(2, "Can't get file mode flags on stdin: %m");
+
+ 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;
+
+ usleep(10000); /* inter-character typing delay (?) */
+
+ status = write(1, &ch, 1);/*wangming*/
+
+ switch (status) {
+ case 1:
+ return (0);
+
+ default:
+ msgf("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");
+
+ 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) {
+ alarm(0);
+ alarmed = 0;
+
+ if (verbose) {
+ if (errno == EINTR || errno == EWOULDBLOCK)
+ msgf(" -- write timed out");
+ else
+ msgf(" -- write failed: %m");
+ }
+ return (0);
+ }
+ return (1);
+}
+
+int put_string (s)
+register char *s;
+{
+ quiet = 0;
+ s = clean(s, 1);
+
+ if (verbose) {
+ if (quiet)
+ msgf("send (?????\?)");
+ else
+ msgf("send (%v)", s);
+ }
+
+ alarm(timeout); alarmed = 0;
+
+ while (*s) {
+ register char c = *s++;
+
+ if (c != '\\') {
+ if (!write_char (c))
+ return 0;
+ continue;
+ }
+
+ c = *s++;
+ switch (c) {
+ case 'd':
+ sleep(1);
+ break;
+
+ case 'K':
+ break_sequence();
+ break;
+
+ case 'p':
+ 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);
+ len = strlen(string);
+ minlen = (len > sizeof(fail_buffer)? len: sizeof(fail_buffer)) - 1;
+ if (verbose)
+ msgf("expect (%v)", string);
+
+ if (len > STR_LEN) {
+ msgf("expect string is too long");
+ exit_code = 1;
+ return 0;
+ }
+
+ if (len == 0) {
+ if (verbose)
+ msgf("got it");
+ return (1);
+ }
+ alarm(timeout);
+ alarmed = 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)
+ msgf(""); /* blank line */
+ else
+ msgf("%0.*v", s - logged, logged);
+ logged = s + 1;
+ }
+
+ *s++ = c;
+
+ if (verbose && s >= logged + 80) {
+ msgf("%0.*v", s - logged, logged);
+ logged = s;
+ }
+
+ if (Verbose) {
+ if (c == '\n')
+ fputc( '\n', stderr );
+ else if (c != '\r')
+ fprintf( stderr, "%s", character(c) );
+ }
+
+ 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);
+
+ strftime (report_buffer, 20, "%b %d %H:%M:%S ", tm_now);
+ strcat (report_buffer, report_string[n]);
+
+ 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) {
+ if (s > logged)
+ msgf("%0.*v", s - logged, logged);
+ msgf(" -- got it\n");
+ }
+
+ alarm(0);
+ alarmed = 0;
+ return (1);
+ }
+
+ 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) {
+ if (s > logged)
+ msgf("%0.*v", s - logged, logged);
+ msgf(" -- failed");
+ }
+
+ alarm(0);
+ alarmed = 0;
+ exit_code = n + 4;
+ strcpy(fail_reason = fail_buffer, abort_string[n]);
+ return (0);
+ }
+ }
+
+ if (s >= end) {
+ if (logged < s - minlen) {
+ if (verbose)
+ msgf("%0.*v", s - logged, logged);
+ logged = s;
+ }
+ s -= minlen;
+ memmove(temp, s, minlen);
+ logged = temp + (logged - s);
+ s = temp + minlen;
+ }
+
+ if (alarmed && verbose)
+ msgf("warning: alarm synchronization problem");
+ }
+
+ alarm(0);
+
+ if (verbose && printed) {
+ if (alarmed)
+ msgf(" -- read timed out");
+ else
+ msgf(" -- read failed: %m");
+ }
+
+ exit_code = 3;
+ alarmed = 0;
+ return (0);
+}
+
+/*
+ * Gross kludge to handle Solaris versions >= 2.6 having usleep.
+ */
+#ifdef SOL2
+#include <sys/param.h>
+#if MAXUID > 65536 /* then this is Solaris 2.6 or later */
+#undef NO_USLEEP
+#endif
+#endif /* SOL2 */
+
+#ifdef NO_USLEEP
+#include <sys/types.h>
+#include <sys/time.h>
+
+/*
+ usleep -- support routine for 4.2BSD system call emulations
+ last edit: 29-Oct-1984 D A Gwyn
+ */
+
+extern int select();
+
+int
+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 */
+
+ delay.tv_sec = usec / 1000000L;
+ delay.tv_usec = usec % 1000000L;
+
+ 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;
+ }
+ }
+}
+
+/*
+ * 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.
+ */
+#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];
+ 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;
+}
+
+
+#ifdef ENABLE_NETWORK_SUPPORT
+/*
+ * Allow chat to chat to a network connection easily
+ */
+
+#include <netdb.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <sys/socket.h>
+
+void
+net_open()
+{
+ struct sockaddr_in sock_in;
+ struct hostent *host;
+ int s;
+ aaaaaaaaaaaaa
+ bzero((char *)&sock_in, sizeof (sock_in));
+ sock_in.sin_family = AF_INET;
+ s = socket(AF_INET, SOCK_STREAM, 0);
+ if (s == -1) {
+ perror("socket");
+ exit(1);
+ }
+
+ if (bind(s, (struct sockaddr*)&sock_in, sizeof (sock_in)) == -1) {
+ perror("bind");
+ exit(2);
+ }
+
+ host = gethostbyname(net_host);
+ if (host) {
+ sock_in.sin_family = host->h_addrtype;
+ bcopy(host->h_addr, &sock_in.sin_addr, host->h_length);
+ } else {
+ sock_in.sin_family = AF_INET;
+ sock_in.sin_addr.s_addr = inet_addr(net_host);
+ if (sock_in.sin_addr.s_addr == -1) {
+ fprintf(stderr, "%s: %s unknown host\n", program_name, net_host);
+ exit(3);
+ }
+ }
+
+ sock_in.sin_port = htons(net_port);
+
+ if (connect(s, (struct sockaddr*)&sock_in, sizeof(sock_in)) == -1) {
+ perror("connect:");
+ exit(4);
+ }
+
+ /*
+ * make the socket stdin/stdout
+ */
+ if (s != 0) {
+ dup2(s, 0);
+ close(s);
+ }
+ dup2(0, 1);
+}
+
+
+/* we arrive here having already receive an IAC */
+int
+net_get_char(unsigned char *cp)
+{
+ int status;
+ unsigned char cmd, option;
+
+ do {
+ status = read(0, &cmd, 1);
+ if (status <= 0)
+ return(IAC);
+
+ if (cmd == IAC) /* escaped IAC */
+ return(IAC);
+
+ status = read(0, &option, 1);
+ if (status <= 0) {
+ put_char(IAC);
+ return(cmd);
+ }
+
+ switch (cmd) {
+ case WILL:
+ put_char(IAC);
+ put_char(DONT);
+ put_char(option);
+ break;
+ case WONT:
+ break;
+ case DO:
+ put_char(IAC);
+ put_char(WONT);
+ put_char(option);
+ break;
+ case DONT:
+ break;
+ default:
+ put_char(IAC);
+ put_char(cmd);
+ return(option);
+ }
+
+ /*
+ * get next char
+ */
+ status = read(0, cp, 1);
+ if (status <= 0)
+ return(-1);
+ } while (*cp == IAC);
+
+ return(*cp);
+}
+
+#endif /* ENABLE_NETWORK_SUPPORT */