#define	nil	NULL#define nelem(p)	(sizeof (p)/sizeof (p)[0]) typedef unsigned char uchar;/*typedef unsigned short ushort;typedef unsigned int uint;typedef unsigned long ulong;*/typedef unsigned long long uvlong;typedef long long vlong; int vfprint(int fd, char *fmt, va_list ap);int fprint(int fd, char *fmt, ...);int print(char *fmt, ...);long readn(int fd, void *buf, long n); char *estrdup(char *s);void randominit(void);void randombuf(uchar *p, int n); char *hex(uchar *buf, int n);int eq(char *a, char *b);int memeq(void *a, void *b, int n);int min(int a, int b); char *remoteaddr(int fd); enum {	Deskeylen =	7,};void passtokey(uchar *key, char *pw);void des64key(uchar *k56, uchar *k64);void authencrypt(uchar *key, uchar *buf, int n);void authdecrypt(uchar *key, uchar *buf, int n);