#include <string.h>#include "ose.h"#include "efs.h"#include "efs_err.h"#include "errno.h"#include "stdio.h"#include "unistd.h"#ifdef USE_OSEDEF_H#include "osedef.h"#endif#ifdef SHELL_SERUNIT#ifdef SHELL_SERNAME#include "login.sig"#else#error SHELL_SERUNIT is defined, but not SHELL_SERNAME!#endif#endif#define TTYNAME "/tty"#define STR(x) #x#define STRSTR(x) STR(x)struct Passwd{  const char *username;  const char *password;  OSUSER userid;  OSENTRYPOINT *shell;};OS_PROCESS(no_shell){  printf("Shell logins not allowed.\n");  exit(0);}OS_PROCESS(no_telnet){  printf("Telnet logins not allowed.\n");  exit(0);}Booleanvalidate_user(const char *username,              const char *password,              const char *termname,	      OSUSER *user,	      OSENTRYPOINT **shell){  extern OSENTRYPOINT ose_shell;  static const struct Passwd table[] =  {    /* For now the user id. must be zero. */    { "",     "",      0, ose_shell },    { "olli", "bolli", 0, ose_shell },    { "ftp", "",       0, no_shell },    { "anonymous", "", 0, no_shell },    { NULL, NULL, 0, NULL }  };  unsigned i;  printf("\nVALIDATE USER CALLED! %s, %s, %s\n", username, password, termname);  for (i = 0; table[i].username != NULL; i++)  {    if (strcmp(table[i].username, username) == 0 &&	( password == NULL ||	  strcmp(table[i].password, password) == 0 ) )    {      if (strcmp(username, "root") == 0 &&	  strncmp(termname, "/telnet", 7) == 0)      {	*user  = table[i].userid;	*shell = no_telnet;      }      else      {	*user  = table[i].userid;	*shell = table[i].shell;      }      return True;    }  }  return False;}OS_PROCESS(start_shell){#ifdef SHELL_SERUNIT  /* Mount serial port and open it as stdin/stdout/stderr. */  {    int fd0, fd1, fd2;    if (efs_mount(TTYNAME, "confm", "serdd",		  "unit=0,hwname="SHELL_SERNAME",hwunit="STRSTR(SHELL_SERUNIT)",baudrate=9600") != 0)    {      error2(OSE_EFS_STARTEFS_EMOUNT_TTY_FAILED, (OSERRCODE)errno);    }    fd0 = open(TTYNAME, O_RDONLY, 0);    fd1 = open(TTYNAME, O_WRONLY | O_TEXT, 0);    fd2 = open(TTYNAME, O_WRONLY | O_TEXT, 0);    if (fd0 != 0 || fd1 != 1 || fd2 != 2)    {      error2(OSE_EFS_STARTEFS_EOPEN_TTY_FAILED, (OSERRCODE)errno);    }  }  /* Spawn the login process in the same block (main). */  {    extern OSENTRYPOINT ose_login;    PROCESS login_ = create_process(OS_BG_PROC,				    "ose_login",				    ose_login,				    1000,				    (OSPRIORITY) 0,				    (OSTIME) 0,				    (PROCESS) 0,				    NULL,				    (OSVECTOR) 0,				    (OSUSER) 0);    efs_clone(login_);    start(login_);		    sendLoginInit(0, login_);  }  /* All initialisations done, clean up and hibernate. */  close(0);  close(1);  close(2);#endif  stop(current_process());}