set data format/send break diff for epicon-5.1

--- epicon.c.orig	Thu Apr 20 11:58:11 2017
+++ epicon.c	Mon Jan 11 14:10:35 2021
@@ -64,6 +64,8 @@ int FP1,FP2;                        /* use to close fi
 int net_flag = 0;                   /* ip net connect flag */
 int server_ip_flag = 0;             /* ip server flag */
 int Twostop = 0;                    /* 2 stop bit */
+int Datalen = CS8;                  /* data bit length */
+int Parity = 0;                     /* parity setting */
 int Bin_flag = 0;                   /* binary mode flag cannot escape */
 int Echo_flag = 0;                  /* input echo flag mode */
 int ip_socket_bufsize = 1024*1024;  /* ip socket buffer size */
@@ -106,14 +108,14 @@ char *argv[];
   done = i = speed = t_result = epicon_pid = 0;
   extern char *optarg;
   extern int optind;
-  extern int getopt(), convert_speed(), escape_code(), access();
+  extern int getopt(), convert_speed(), escape_code(), access(), convert_mode();
   epicon_pid = getpid();
   sprintf( Epicon_Socket ,"%s%ld",Epicon_Socket_init , epicon_pid);
   unlink( Epicon_Socket );
   strcpy(com_port, COMPORT);
   argv_redirect = argv[argc];
   speed = convert_speed(SPEED);
-  while((i = getopt(argc, argv,"bmMs:d:D:l:e:n:L:f:F:c:pqvz")) != EOF) {
+  while((i = getopt(argc, argv,"bmMs:d:D:l:e:n:L:f:F:c:pqvzx:")) != EOF) {
     switch(i) {
       case 'b':
         Bin_flag = 1; /* cannot escape flag set */
@@ -201,6 +203,12 @@ char *argv[];
       case 'z':
         AZ_flag = 0;
         break;
+      case 'x':
+        if(convert_mode(optarg) == EOF) {
+          fprintf(stderr,"%s: invalid mode\n", optarg);
+          exit(1);
+        }
+        break;
       default:
         usage(*argv);
         exit(3);
@@ -249,6 +257,7 @@ char *argv[];
     fprintf(stderr,"\r\n** Welcome to epicon Version-%s Copyright Isamu Yamauchi %s **",VER,DAY);
     if (!Bin_flag) fprintf(stderr,"\r\n      exec shell         ~! ");
     if (!Bin_flag) fprintf(stderr,"\r\n      send binary files  ~f");
+    if (!Bin_flag) fprintf(stderr,"\r\n      send break         ~b");
     if (!Bin_flag) fprintf(stderr,"\r\n      call rz,sz,sx,rx   ~rz,~sz,~sx,~rx");
     if (!Bin_flag) fprintf(stderr,"\r\n      call kermit        ~sk,~rk");
     if (!Bin_flag) fprintf(stderr,"\r\n      external command   ~C ");
@@ -333,6 +342,36 @@ register char *sp;
   return EOF;
 }

+convert_mode(arg)
+register char *arg;
+{
+  register int i = 0;
+  char c;
+  static int cs[] = {CS5, CS6, CS7, CS8};
+  static int sp[] = {0, CSTOPB};
+  while(c = arg[i]) {
+    if (i > 2) return EOF;
+    if (c == '-') ;/* do nothing */
+    else switch(i) {
+    case 0:
+      if (c < '5' || c > '8') return EOF;
+      Datalen = cs[c - '5'];
+      break;
+    case 1:
+      if (c == 'E' || c == 'e') Parity = PARENB;
+      else if (c == 'O' || c == 'o') Parity = PARENB | PARODD;
+      else if (c == 'N' || c == 'n') Parity = 0;
+      else return EOF;
+      break;
+    case 2:
+      if (c < '1' || c > '2') return EOF;
+      Twostop = sp[c - '1'];
+      break;
+    }
+    i++;
+  }
+  return 0;
+}

 int escape_code(c)
 register char *c;
--- epicon_main.c.orig	Mon Jan 11 13:51:52 2021
+++ epicon_main.c	Mon Jan 11 14:03:47 2021
@@ -54,6 +54,7 @@ extern void shell_process();
 extern void send_file();
 extern void msleep();
 extern void send_file_char();
+extern void send_break();
 extern char esc[];
 extern pid_t ck_pid;                   /* check to process id */
 extern int com_port_fd;                /* com_port file descriptor */
@@ -604,6 +605,10 @@ check_char_1() {
       set_console_mode(2);
       ch4 = strtok(f3,"\n");
       send_file_char(fp2,ch4);
+      break;
+    case 'b':
+      incount = incount - 2;
+      send_break();
       break;
     default:
       esc_flag = 0;
--- epicon_uty.c.orig	Thu Apr 20 12:00:09 2017
+++ epicon_uty.c	Mon Jan 11 14:02:36 2021
@@ -55,6 +55,8 @@ extern char *ip_port;                  /* ip net conne
 extern char *server_ip_port;           /* default server port */
 extern char com_port[];                /* tty_dev name */
 extern int Twostop;                    /* 2 stop bit */
+extern int Datalen;                    /* data bit length */
+extern int Parity;                     /* parity setting */
 extern int Bin_flag;                   /* binary mode flag cannot escape */
 extern int Echo_flag;                  /* input echo mode flag */
 extern int ip_socket_bufsize;          /* ip socket buffer size */
@@ -727,19 +729,14 @@ void set_com_port_mode(speed)
   com_port_set = com_port_save;
   com_port_set.c_iflag &= ~(IXON|IXANY|IXOFF|ISTRIP|INLCR|ICRNL|IGNCR);
   com_port_set.c_oflag &= ~(ONLCR|OCRNL|ONOCR|ONLRET);
-  com_port_set.c_cflag &= ~(PARENB);
+  com_port_set.c_cflag &= ~(PARENB|PARODD|CSTOPB|CSIZE);
   com_port_set.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHONL|ISIG);
   com_port_set.c_cflag |=  (CLOCAL|CREAD|IGNPAR);
+  com_port_set.c_cflag |=  (Parity|Twostop|Datalen);
   com_port_set.c_oflag = 0;
-  com_port_set.c_cflag &= ~PARENB;
-  com_port_set.c_cflag |= CS8;
-  if (Twostop)  {
-    com_port_set.c_cflag |= CSTOPB;  /* Set two stop bits */
-  }
 #ifdef CBAUDEX
   com_port_set.c_cflag &= ~(CBAUDEX);
 #endif
-  com_port_set.c_cflag &= ~(PARENB);
 /*   com_port_set.c_iflag |= IXOFF;  */      /* X/Y modem will clear this */
 //  com_port_set.c_cflag |= CLOCAL|(speed); 2009.6.9 delete
   com_port_set.c_cc[VMIN]  = 0;
@@ -807,4 +804,13 @@ msleep(int msec) { /* wait milli second */
    perror("msleep");
    return -1;
  }
+}
+
+send_break()
+{
+  #ifndef HAVE_TERMIOS
+    ioctl(com_port_fd, TCSBRK, 0);
+  #else
+    tcsendbreak(com_port_fd, 250);
+  #endif
 }