2007-09-25 Joel Sherrill <joel.sherrill@oarcorp.com>

	* telnetd/README, telnetd/pty.c, telnetd/pty.h, telnetd/telnetd.c,
	telnetd/telnetd.h: telnetd rewrite.
	* telnetd/check_passwd.c, telnetd/des.c, telnetd/genpw.c: New files.

1 files changed, 315 insertions, 315 deletions

diff --git a/cpukit/telnetd/pty.c b/cpukit/telnetd/pty.c
index 9ee05231b7..142a7ce4e4 100644
--- a/cpukit/telnetd/pty.c
+++ b/cpukit/telnetd/pty.c
@@ -144,22 +144,22 @@ static rtems_device_major_number pty_major;
  */
 
 char *  telnet_get_pty(int socket) {
-	int ndx;
-	if (telnet_pty_inited) {
-		for (ndx=0;ndx<MAX_PTYS;ndx++) {
-			if (telnet_ptys[ndx].socket<0) {
-				struct timeval t;
-				/* set a long polling interval to save CPU time */
-				t.tv_sec=2;
-				t.tv_usec=00000;
-				setsockopt(socket, SOL_SOCKET, SO_RCVTIMEO, &t, sizeof(t));
-				telnet_ptys[ndx].socket=socket;
-				return telnet_ptys[ndx].devname;
-			};
-		};
-	}
-	close(socket);
-	return NULL;
+  int ndx;
+  if (telnet_pty_inited) {
+    for (ndx=0;ndx<MAX_PTYS;ndx++) {
+      if (telnet_ptys[ndx].socket<0) {
+        struct timeval t;
+        /* set a long polling interval to save CPU time */
+        t.tv_sec=2;
+        t.tv_usec=00000;
+        setsockopt(socket, SOL_SOCKET, SO_RCVTIMEO, &t, sizeof(t));
+        telnet_ptys[ndx].socket=socket;
+        return telnet_ptys[ndx].devname;
+      };
+    };
+  }
+  close(socket);
+  return NULL;
 }
 
 
@@ -177,175 +177,175 @@ static const char IAC_IP_RSP []="<*Interrupt*>";
 
 static
 int send_iac(int minor,unsigned char mode,unsigned char option) {
-	unsigned char buf[3];
-	buf[0]=IAC_ESC;
-	buf[1]=mode;
-	buf[2]=option;
-	return write(telnet_ptys[minor].socket,buf,sizeof(buf));
+  unsigned char buf[3];
+  buf[0]=IAC_ESC;
+  buf[1]=mode;
+  buf[2]=option;
+  return write(telnet_ptys[minor].socket,buf,sizeof(buf));
 }
 
 static int
 handleSB(pty_t *pty)
 {
-	switch (pty->sb_buf[0]) {
-		case 31:	/* NAWS */
-			pty->width  = (pty->sb_buf[1]<<8) + pty->sb_buf[2];
-			pty->height = (pty->sb_buf[3]<<8) + pty->sb_buf[4];
+  switch (pty->sb_buf[0]) {
+    case 31:	/* NAWS */
+      pty->width  = (pty->sb_buf[1]<<8) + pty->sb_buf[2];
+      pty->height = (pty->sb_buf[3]<<8) + pty->sb_buf[4];
 #if DEBUG & DEBUG_WH
-			fprintf(stderr,
-					"Setting width/height to %ix%i\n",
-					pty->width,
-					pty->height);
+      fprintf(stderr,
+          "Setting width/height to %ix%i\n",
+          pty->width,
+          pty->height);
 #endif
-			break;
-		default:
-			break;
-	}
-	return 0;
+      break;
+    default:
+      break;
+  }
+  return 0;
 }
 
 static int read_pty(int minor) { /* Characters written to the client side*/
-	 unsigned char	value;
-	 unsigned int	omod;
-	 int			count;
-	 int			result;
-	 pty_t			*pty=telnet_ptys+minor;
-
-	 count=read(pty->socket,&value,sizeof(value));
-	 if (count<0)
-		return -1;
-
-	 if (count<1) {
-			/* Unfortunately, there is no way of passing an EOF
-			 * condition through the termios driver. Hence, we
-			 * resort to an ugly hack. Setting cindex>ccount
-			 * causes the termios driver to return a read count
-			 * of '0' which is what we want here. We leave
-			 * 'errno' untouched.
-			 */
-			pty->ttyp->cindex=pty->ttyp->ccount+1;
-			return pty->ttyp->termios.c_cc[VEOF];
-	 };
-
-	 omod=pty->iac_mode;
-	 pty->iac_mode=0;
-	 switch(omod & 0xff) {
-			 case IAC_ESC:
-					 switch(value) {
-							 case IAC_ESC :
-									 /* in case this is an ESC ESC sequence in SB mode */
-									 pty->iac_mode = omod>>8;
-									 return IAC_ESC;
-							 case IAC_DONT:
-							 case IAC_DO  :
-							 case IAC_WONT:
-							 case IAC_WILL:
-									 pty->iac_mode=value;
-									 return -1;
-							 case IAC_SB  :
+   unsigned char	value;
+   unsigned int	omod;
+   int			count;
+   int			result;
+   pty_t			*pty=telnet_ptys+minor;
+
+   count=read(pty->socket,&value,sizeof(value));
+   if (count<0)
+    return -1;
+
+   if (count<1) {
+      /* Unfortunately, there is no way of passing an EOF
+       * condition through the termios driver. Hence, we
+       * resort to an ugly hack. Setting cindex>ccount
+       * causes the termios driver to return a read count
+       * of '0' which is what we want here. We leave
+       * 'errno' untouched.
+       */
+      pty->ttyp->cindex=pty->ttyp->ccount+1;
+      return pty->ttyp->termios.c_cc[VEOF];
+   };
+
+   omod=pty->iac_mode;
+   pty->iac_mode=0;
+   switch(omod & 0xff) {
+       case IAC_ESC:
+           switch(value) {
+               case IAC_ESC :
+                   /* in case this is an ESC ESC sequence in SB mode */
+                   pty->iac_mode = omod>>8;
+                   return IAC_ESC;
+               case IAC_DONT:
+               case IAC_DO  :
+               case IAC_WONT:
+               case IAC_WILL:
+                   pty->iac_mode=value;
+                   return -1;
+               case IAC_SB  :
 #if DEBUG & DEBUG_DETAIL
-									 printk("SB\n");
+                   printk("SB\n");
 #endif
-									 pty->iac_mode=value;
-									 pty->sb_ind=0;
-									 return -100;
-							 case IAC_GA  :
-									 return -1;
-							 case IAC_EL  :
-									 return 0x03; /* Ctrl-C*/
-							 case IAC_EC  :
-									 return '\b';
-							 case IAC_AYT :
-									 write(pty->socket,IAC_AYT_RSP,strlen(IAC_AYT_RSP));
-									 return -1;
-							 case IAC_AO  :
-									 return -1;
-							 case IAC_IP  :
-									 write(pty->socket,IAC_IP_RSP,strlen(IAC_IP_RSP));
-									 return -1;
-							 case IAC_BRK :
-									 write(pty->socket,IAC_BRK_RSP,strlen(IAC_BRK_RSP));
-									 return -1;
-							 case IAC_DMARK:
-									 return -2;
-							 case IAC_NOP :
-									 return -1;
-							 case IAC_SE  :
+                   pty->iac_mode=value;
+                   pty->sb_ind=0;
+                   return -100;
+               case IAC_GA  :
+                   return -1;
+               case IAC_EL  :
+                   return 0x03; /* Ctrl-C*/
+               case IAC_EC  :
+                   return '\b';
+               case IAC_AYT :
+                   write(pty->socket,IAC_AYT_RSP,strlen(IAC_AYT_RSP));
+                   return -1;
+               case IAC_AO  :
+                   return -1;
+               case IAC_IP  :
+                   write(pty->socket,IAC_IP_RSP,strlen(IAC_IP_RSP));
+                   return -1;
+               case IAC_BRK :
+                   write(pty->socket,IAC_BRK_RSP,strlen(IAC_BRK_RSP));
+                   return -1;
+               case IAC_DMARK:
+                   return -2;
+               case IAC_NOP :
+                   return -1;
+               case IAC_SE  :
 #if DEBUG & DEBUG_DETAIL
-									{
-									int i;
-									printk("SE");
-									for (i=0; i<pty->sb_ind; i++)
-										printk(" %02x",pty->sb_buf[i]);
-									printk("\n");
-									}
+                  {
+                  int i;
+                  printk("SE");
+                  for (i=0; i<pty->sb_ind; i++)
+                    printk(" %02x",pty->sb_buf[i]);
+                  printk("\n");
+                  }
 #endif
-									handleSB(pty);
-							 return -101;
-							 case IAC_EOR :
-									 return -102;
-							 default      :
-									 return -1;
-					 };
-					 break;
-
-			 case IAC_SB:
-					 pty->iac_mode=omod;
-					 if (IAC_ESC==value) {
-						pty->iac_mode=(omod<<8)|value;
-					 } else {
-						if (pty->sb_ind < SB_MAX)
-							pty->sb_buf[pty->sb_ind++]=value;
-					 }
-					 return -1;
-
-			 case IAC_WILL:
-					 if (value==34){
-							send_iac(minor,IAC_DONT,   34);	/*LINEMODE*/ 
-							send_iac(minor,IAC_DO  ,    1);	/*ECHO    */
-					 } else if (value==31) {
-							send_iac(minor,IAC_DO  ,   31);	/*NAWS	  */
+                  handleSB(pty);
+               return -101;
+               case IAC_EOR :
+                   return -102;
+               default      :
+                   return -1;
+           };
+           break;
+
+       case IAC_SB:
+           pty->iac_mode=omod;
+           if (IAC_ESC==value) {
+            pty->iac_mode=(omod<<8)|value;
+           } else {
+            if (pty->sb_ind < SB_MAX)
+              pty->sb_buf[pty->sb_ind++]=value;
+           }
+           return -1;
+
+       case IAC_WILL:
+           if (value==34){
+              send_iac(minor,IAC_DONT,   34);	/*LINEMODE*/ 
+              send_iac(minor,IAC_DO  ,    1);	/*ECHO    */
+           } else if (value==31) {
+              send_iac(minor,IAC_DO  ,   31);	/*NAWS	  */
 #if DEBUG & DEBUG_DETAIL
-							printk("replied DO NAWS\n");
+              printk("replied DO NAWS\n");
 #endif
-					 } else {
-							send_iac(minor,IAC_DONT,value);
-					 }
-					 return -1;
-			 case IAC_DONT:
-					 return -1;
-			 case IAC_DO  :
-					 if (value==3) {
-							send_iac(minor,IAC_WILL,    3);	/* GO AHEAD*/
-					 } else	if (value==1) {                         
-							/* ECHO */
-					 } else {
-							send_iac(minor,IAC_WONT,value);
-					 };
-					 return -1;
-			 case IAC_WONT:
-					 if (value==1) {send_iac(minor,IAC_WILL,    1);} else /* ECHO */
-					 {send_iac(minor,IAC_WONT,value);};
-					 return -1;
-			 default:
-					 if (value==IAC_ESC) {
-							pty->iac_mode=value;
-							return -1;
-					 } else {
-							result=value;  
-							if ( 0
+           } else {
+              send_iac(minor,IAC_DONT,value);
+           }
+           return -1;
+       case IAC_DONT:
+           return -1;
+       case IAC_DO  :
+           if (value==3) {
+              send_iac(minor,IAC_WILL,    3);	/* GO AHEAD*/
+           } else	if (value==1) {                         
+              /* ECHO */
+           } else {
+              send_iac(minor,IAC_WONT,value);
+           };
+           return -1;
+       case IAC_WONT:
+           if (value==1) {send_iac(minor,IAC_WILL,    1);} else /* ECHO */
+           {send_iac(minor,IAC_WONT,value);};
+           return -1;
+       default:
+           if (value==IAC_ESC) {
+              pty->iac_mode=value;
+              return -1;
+           } else {
+              result=value;  
+              if ( 0
 #if 0							 /* pass CRLF through - they should use termios to handle it */
-								 ||	((value=='\n') && (pty->last_cr))
+                 ||	((value=='\n') && (pty->last_cr))
 #endif
-								/* but map telnet CRNUL to CR down here */
-								 || ((value==0) && pty->last_cr)
-								) result=-1;
-							 pty->last_cr=(value=='\r');
-							 return result;
-					 };
-	 };
-	/* should never get here but keep compiler happy */
-	return -1;
+                /* but map telnet CRNUL to CR down here */
+                 || ((value==0) && pty->last_cr)
+                ) result=-1;
+               pty->last_cr=(value=='\r');
+               return result;
+           };
+   };
+  /* should never get here but keep compiler happy */
+  return -1;
 }
 
 /*-----------------------------------------------------------*/
@@ -360,69 +360,69 @@ static const rtems_termios_callbacks * pty_get_termios_handlers(int polled) ;
 /*-----------------------------------------------------------*/
 static int
 ptySetAttributes(int minor,const struct termios *t) {
-	if (minor<MAX_PTYS) {	
-	 telnet_ptys[minor].c_cflag=t->c_cflag;	
-	} else {
-	 return -1;
-	};
-	return 0;
+  if (minor<MAX_PTYS) {	
+   telnet_ptys[minor].c_cflag=t->c_cflag;	
+  } else {
+   return -1;
+  };
+  return 0;
 }
 /*-----------------------------------------------------------*/
 static int 
 ptyPollInitialize(int major,int minor,void * arg) {
-	rtems_libio_open_close_args_t * args = (rtems_libio_open_close_args_t*)arg;
-	struct termios t;
+  rtems_libio_open_close_args_t * args = (rtems_libio_open_close_args_t*)arg;
+  struct termios t;
         if (minor<MAX_PTYS) {	
          if (telnet_ptys[minor].socket<0) return -1;		
-	 telnet_ptys[minor].opened=TRUE;
-	 telnet_ptys[minor].ttyp= (struct rtems_termios_tty *) args->iop->data1;
-	 telnet_ptys[minor].iac_mode=0;
-	 telnet_ptys[minor].sb_ind=0;
-	 telnet_ptys[minor].width=0;
-	 telnet_ptys[minor].height=0;
-	 t.c_cflag=B9600|CS8;/* termios default */
-	 return ptySetAttributes(minor,&t);
-	} else {
-	 return -1;
-	};
+   telnet_ptys[minor].opened=TRUE;
+   telnet_ptys[minor].ttyp= (struct rtems_termios_tty *) args->iop->data1;
+   telnet_ptys[minor].iac_mode=0;
+   telnet_ptys[minor].sb_ind=0;
+   telnet_ptys[minor].width=0;
+   telnet_ptys[minor].height=0;
+   t.c_cflag=B9600|CS8;/* termios default */
+   return ptySetAttributes(minor,&t);
+  } else {
+   return -1;
+  };
 }
 /*-----------------------------------------------------------*/
 static int 
 ptyShutdown(int major,int minor,void * arg) {
         if (minor<MAX_PTYS) {	
-	 telnet_ptys[minor].opened=FALSE;
+   telnet_ptys[minor].opened=FALSE;
          if (telnet_ptys[minor].socket>=0) close(telnet_ptys[minor].socket);
-	 telnet_ptys[minor].socket=-1;
-	 chown(telnet_ptys[minor].devname,2,0);
-	} else {
-	 return -1;
-	};
-	return 0;
+   telnet_ptys[minor].socket=-1;
+   chown(telnet_ptys[minor].devname,2,0);
+  } else {
+   return -1;
+  };
+  return 0;
 }
 /*-----------------------------------------------------------*/
 /* Write Characters into pty device                          */ 
 /*-----------------------------------------------------------*/
 static int
 ptyPollWrite(int minor, const char * buf,int len) {
-	int count;
+  int count;
         if (minor<MAX_PTYS) {	
          if (telnet_ptys[minor].socket<0) return -1;		
-	 count=write(telnet_ptys[minor].socket,buf,len);
-	} else {
-	 count=-1;
-	};
-	return count;
+   count=write(telnet_ptys[minor].socket,buf,len);
+  } else {
+   count=-1;
+  };
+  return count;
 }
 /*-----------------------------------------------------------*/
 static int
 ptyPollRead(int minor) {
-	int result;
+  int result;
         if (minor<MAX_PTYS) {	
          if (telnet_ptys[minor].socket<0) return -1;		
-	 result=read_pty(minor);
-	 return result;
-	};
-	return -1;
+   result=read_pty(minor);
+   return result;
+  };
+  return -1;
 }
 /*-----------------------------------------------------------*/
 /*  pty_initialize
@@ -446,36 +446,36 @@ rtems_device_driver my_pty_initialize(
 int ndx;	
 rtems_status_code status ;
 
-	/* 
-	 * Set up ptys
-	 */
-
-	for (ndx=0;ndx<MAX_PTYS;ndx++) {
-		telnet_ptys[ndx].devname=(char*)malloc(strlen("/dev/ptyXX")+1);
-		sprintf(telnet_ptys[ndx].devname,"/dev/pty%X",ndx);
-		telnet_ptys[ndx].ttyp=NULL;
-		telnet_ptys[ndx].c_cflag=CS8|B9600;
-		telnet_ptys[ndx].socket=-1;
-		telnet_ptys[ndx].opened=FALSE;
-		telnet_ptys[ndx].sb_ind=0;
-		telnet_ptys[ndx].width=0;
-		telnet_ptys[ndx].height=0;
-
-	};
-
-	/*
-	 * Register the devices
-	 */
-	for (ndx=0;ndx<MAX_PTYS;ndx++) {
-		status = rtems_io_register_name(telnet_ptys[ndx].devname, major, ndx);
-		if (status != RTEMS_SUCCESSFUL)
-				rtems_fatal_error_occurred(status);
-		chmod(telnet_ptys[ndx].devname,0660);
-		chown(telnet_ptys[ndx].devname,2,0); /* tty,root*/
-	};
-	printk("Device: /dev/pty%X../dev/pty%X (%d)pseudo-terminals registered.\n",0,MAX_PTYS-1,MAX_PTYS);
-
-	return RTEMS_SUCCESSFUL;
+  /* 
+   * Set up ptys
+   */
+
+  for (ndx=0;ndx<MAX_PTYS;ndx++) {
+    telnet_ptys[ndx].devname=(char*)malloc(strlen("/dev/ptyXX")+1);
+    sprintf(telnet_ptys[ndx].devname,"/dev/pty%X",ndx);
+    telnet_ptys[ndx].ttyp=NULL;
+    telnet_ptys[ndx].c_cflag=CS8|B9600;
+    telnet_ptys[ndx].socket=-1;
+    telnet_ptys[ndx].opened=FALSE;
+    telnet_ptys[ndx].sb_ind=0;
+    telnet_ptys[ndx].width=0;
+    telnet_ptys[ndx].height=0;
+
+  };
+
+  /*
+   * Register the devices
+   */
+  for (ndx=0;ndx<MAX_PTYS;ndx++) {
+    status = rtems_io_register_name(telnet_ptys[ndx].devname, major, ndx);
+    if (status != RTEMS_SUCCESSFUL)
+        rtems_fatal_error_occurred(status);
+    chmod(telnet_ptys[ndx].devname,0660);
+    chown(telnet_ptys[ndx].devname,2,0); /* tty,root*/
+  };
+  printk("Device: /dev/pty%X../dev/pty%X (%d)pseudo-terminals registered.\n",0,MAX_PTYS-1,MAX_PTYS);
+
+  return RTEMS_SUCCESSFUL;
 }
 
 static int pty_do_finalize()
@@ -483,32 +483,32 @@ static int pty_do_finalize()
 int ndx;
 rtems_status_code status;
 
-		if ( !telnet_pty_inited )
-			return 0;
-
-		for (ndx=0;ndx<MAX_PTYS;ndx++) {
-			if (telnet_ptys[ndx].opened) {
-					fprintf(stderr,"There are still opened PTY devices, unable to proceed\n");
-					return -1;
-			}
-		}
-		if (RTEMS_SUCCESSFUL != rtems_io_unregister_driver(pty_major)) {
-				fprintf(stderr,"Unable to remove this driver\n");
-				return -1;
-		}
-		for (ndx=0;ndx<MAX_PTYS;ndx++) {
-				/* rtems_io_register_name() actually creates a node in the filesystem
-				 * (mknod())
-				 */
-				status = (rtems_status_code)unlink(telnet_ptys[ndx].devname);
-				if (status != RTEMS_SUCCESSFUL)
-					perror("removing pty device node from file system");
-				else
-					free(telnet_ptys[ndx].devname);
-		};
-		fprintf(stderr,"PTY driver unloaded successfully\n");
-		telnet_pty_inited=FALSE;
-		return 0;
+    if ( !telnet_pty_inited )
+      return 0;
+
+    for (ndx=0;ndx<MAX_PTYS;ndx++) {
+      if (telnet_ptys[ndx].opened) {
+          fprintf(stderr,"There are still opened PTY devices, unable to proceed\n");
+          return -1;
+      }
+    }
+    if (RTEMS_SUCCESSFUL != rtems_io_unregister_driver(pty_major)) {
+        fprintf(stderr,"Unable to remove this driver\n");
+        return -1;
+    }
+    for (ndx=0;ndx<MAX_PTYS;ndx++) {
+        /* rtems_io_register_name() actually creates a node in the filesystem
+         * (mknod())
+         */
+        status = (rtems_status_code)unlink(telnet_ptys[ndx].devname);
+        if (status != RTEMS_SUCCESSFUL)
+          perror("removing pty device node from file system");
+        else
+          free(telnet_ptys[ndx].devname);
+    };
+    fprintf(stderr,"PTY driver unloaded successfully\n");
+    telnet_pty_inited=FALSE;
+    return 0;
 }
 
 /*
@@ -584,93 +584,93 @@ rtems_libio_ioctl_args_t *args = (rtems_libio_ioctl_args_t*)arg;
 struct winsize			 *wp = (struct winsize*)args->buffer;
 pty_t					 *p=&telnet_ptys[minor];
 
-	switch (args->command) {
+  switch (args->command) {
 
-		case TIOCGWINSZ:
+    case TIOCGWINSZ:
 
-			wp->ws_row = p->height;
-			wp->ws_col = p->width;
-			args->ioctl_return=0;
+      wp->ws_row = p->height;
+      wp->ws_col = p->width;
+      args->ioctl_return=0;
 #if DEBUG & DEBUG_WH
-			fprintf(stderr,
-					"ioctl(TIOCGWINSZ), returning %ix%i\n",
-					wp->ws_col,
-					wp->ws_row);
+      fprintf(stderr,
+          "ioctl(TIOCGWINSZ), returning %ix%i\n",
+          wp->ws_col,
+          wp->ws_row);
 #endif
 
-			return RTEMS_SUCCESSFUL;
+      return RTEMS_SUCCESSFUL;
 
-		case TIOCSWINSZ:
+    case TIOCSWINSZ:
 #if DEBUG & DEBUG_WH
-			fprintf(stderr,
-					"ioctl(TIOCGWINSZ), setting %ix%i\n",
-					wp->ws_col,
-					wp->ws_row);
+      fprintf(stderr,
+          "ioctl(TIOCGWINSZ), setting %ix%i\n",
+          wp->ws_col,
+          wp->ws_row);
 #endif
 
-			p->height = wp->ws_row;
-			p->width  = wp->ws_col;
-			args->ioctl_return=0;
+      p->height = wp->ws_row;
+      p->width  = wp->ws_col;
+      args->ioctl_return=0;
 
-			return RTEMS_SUCCESSFUL;
+      return RTEMS_SUCCESSFUL;
 
-		default:
+    default:
 
-	   	break;
+     	break;
   }
 
   return rtems_termios_ioctl(arg);
 }
 
 static rtems_driver_address_table drvPty = {
-		my_pty_initialize,
-		my_pty_open,
-		my_pty_close,
-		my_pty_read,
-		my_pty_write,
-		my_pty_control
+    my_pty_initialize,
+    my_pty_open,
+    my_pty_close,
+    my_pty_read,
+    my_pty_write,
+    my_pty_control
 };
 
 /*-----------------------------------------------------------*/
 static const rtems_termios_callbacks pty_poll_callbacks = {
-	ptyPollInitialize,	/* FirstOpen*/
-	ptyShutdown,		/* LastClose*/
-	ptyPollRead,		/* PollRead  */
-	ptyPollWrite,		/* Write */
-	ptySetAttributes,	/* setAttributes */
-	NULL,			/* stopRemoteTX */
-	NULL,			/* StartRemoteTX */
-	0 			/* outputUsesInterrupts */
+  ptyPollInitialize,	/* FirstOpen*/
+  ptyShutdown,		/* LastClose*/
+  ptyPollRead,		/* PollRead  */
+  ptyPollWrite,		/* Write */
+  ptySetAttributes,	/* setAttributes */
+  NULL,			/* stopRemoteTX */
+  NULL,			/* StartRemoteTX */
+  0 			/* outputUsesInterrupts */
 };
 /*-----------------------------------------------------------*/
 static const rtems_termios_callbacks * pty_get_termios_handlers(int polled) {
-	return &pty_poll_callbacks;
+  return &pty_poll_callbacks;
 }
 /*-----------------------------------------------------------*/
 
 static int pty_do_initialize()
 {
-	if ( !telnet_pty_inited ) {
-		if (RTEMS_SUCCESSFUL==rtems_io_register_driver(0, &drvPty, &pty_major))
-			telnet_pty_inited=TRUE;
-		else
-			fprintf(stderr,"WARNING: registering the PTY driver FAILED\n");
-	}
-	return telnet_pty_inited;
+  if ( !telnet_pty_inited ) {
+    if (RTEMS_SUCCESSFUL==rtems_io_register_driver(0, &drvPty, &pty_major))
+      telnet_pty_inited=TRUE;
+    else
+      fprintf(stderr,"WARNING: registering the PTY driver FAILED\n");
+  }
+  return telnet_pty_inited;
 }
 
 #ifdef __cplusplus
 
 class TelnetPtyIni {
 public:
-	TelnetPtyIni() { if (!nest++) {
-						pty_do_initialize();
-				}
-			 };
-	~TelnetPtyIni(){ if (!--nest) {
-						pty_do_finalize();
-				}
-			 };
+  TelnetPtyIni() { if (!nest++) {
+            pty_do_initialize();
+        }
+       };
+  ~TelnetPtyIni(){ if (!--nest) {
+            pty_do_finalize();
+        }
+       };
 private:
 static int nest;
 };
@@ -680,22 +680,22 @@ int TelnetPtyIni::nest=0;
 
 int telnet_pty_initialize()
 {
-	return telnet_pty_inited;
+  return telnet_pty_inited;
 }
 
 int telnet_pty_finalize()
 {
-	return telnet_pty_inited;
+  return telnet_pty_inited;
 }
 };
 #else
 int telnet_pty_initialize()
 {
-	return pty_do_initialize();
+  return pty_do_initialize();
 }
 
 int telnet_pty_finalize()
 {
-	return pty_do_finalize();
+  return pty_do_finalize();
 }
 #endif