nbase.h

来自「Ubuntu packages of security software。 相」· C头文件 代码 · 共 423 行 · 第 1/2 页

typedef unsigned long u32;
typedef long s32;
#else
typedef u_int32_t u32;
typedef int32_t s32;
#endif

/* Mathematicial MIN/MAX/ABS (absolute value) macros */
#ifndef MAX
#define MAX(x,y) (((x)>(y))?(x):(y))
#endif
#ifndef MIN
#define MIN(x,y) (((x)<(y))?(x):(y))
#endif
#ifndef ABS
#define ABS(x) (((x) >= 0)?(x):(-x)) 
#endif


/* sprintf family */
#if !defined(HAVE_SNPRINTF) && defined(__cplusplus)
extern "C" int snprintf (char *str, size_t sz, const char *format, ...)
     __attribute__ ((format (printf, 3, 4)));
#endif

#if !defined(HAVE_VSNPRINTF) && defined(__cplusplus)
extern "C" int vsnprintf (char *str, size_t sz, const char *format,
     va_list ap)
     __attribute__((format (printf, 3, 0)));
#endif

#if !defined(HAVE_ASPRINTF) && defined(__cplusplus)
extern "C" int asprintf (char **ret, const char *format, ...)
     __attribute__ ((format (printf, 2, 3)));
#endif

#if !defined(HAVE_VASPRINTF) && defined(__cplusplus)
extern "C" int vasprintf (char **ret, const char *format, va_list ap)
     __attribute__((format (printf, 2, 0)));
#endif

#if !defined(HAVE_ASNPRINTF) && defined(__cplusplus)
extern "C" int asnprintf (char **ret, size_t max_sz, const char *format, ...)
     __attribute__ ((format (printf, 3, 4)));
#endif

#if !defined(HAVE_VASNPRINTF) && defined(__cplusplus)
extern "C" int vasnprintf (char **ret, size_t max_sz, const char *format,
     va_list ap)
     __attribute__((format (printf, 3, 0)));
#endif

#if defined(NEED_SNPRINTF_PROTO) && defined(__cplusplus)
extern "C" int snprintf (char *, size_t, const char *, ...);
#endif

#if defined(NEED_VSNPRINTF_PROTO) && defined(__cplusplus)
extern "C" int vsnprintf (char *, size_t, const char *, va_list);
#endif

/* GNU getopt replacements ... Anyone have a BSD licensed version of these? */
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#else
/* The next half-dozen lines are from gcc-2.95 ... -Fyodor */
/* Include getopt.h for the sake of getopt_long.
   We don't need the declaration of getopt, and it could conflict
   with something from a system header file, so effectively nullify that.  */
#define getopt getopt_loser
#include "getopt.h"
#undef getopt
#endif /* HAVE_GETOPT_H */

/* More Windows-specific stuff */
#ifdef WIN32

#define WIN32_LEAN_AND_MEAN /* Whatever this means! From winclude.h*/

/* Apparently Windows doesn't have S_ISDIR */
#ifndef S_ISDIR
#define S_ISDIR(m)      (((m) & _S_IFMT) == _S_IFDIR)
#endif

#define stat _stat /* wtf was ms thinking? */
#define execve _execve
#define getpid _getpid
#define dup _dup
#define dup2 _dup2
#define strdup _strdup
#define write _write
#define open _open
#define stricmp _stricmp
#define putenv _putenv

#if !defined(__GNUC__)
#define snprintf _snprintf
#define vsnprintf _vsnprintf
#endif

#define strcasecmp _stricmp
#define strncasecmp _strnicmp
#define execv _execv

#endif /* WIN32 */

/* Apparently Windows doesn't like /dev/null */
#ifdef WIN32
#define DEVNULL "NUL"
#else
#define DEVNULL "/dev/null"
#endif



#ifdef __cplusplus
extern "C" {
#endif

  /* Returns the UNIX/Windows errno-equivalent.  Note that the Windows
     call is socket/networking specific.  Also, WINDOWS TENDS TO RESET
     THE ERROR, so it will return success the next time.  So SAVE THE
     RESULTS and re-use them, don't keep calling socket_errno().  The
     windows error number returned is like WSAMSGSIZE, but nbase.h
     includes #defines to correlate many of the common UNIX errors
     with their closest Windows equivalents.  So you can use EMSGSIZE
     or EINTR. */
int socket_errno();

/* The usleep() function is important as well */
#ifndef HAVE_USLEEP
#if defined( HAVE_NANOSLEEP) || defined(WIN32)
void usleep(unsigned long usec);
#endif
#endif

/***************** String functions -- See nbase_str.c ******************/
/* I modified this conditional because !@# Redhat does not easily provide
   the prototype even though the function exists */
#if !defined(HAVE_STRCASESTR) || (defined(LINUX) && !defined(__USE_GNU) && !defined(_GNU_SOURCE))
/* strcasestr is like strstr() except case insensitive */
char *strcasestr(const char *haystack, const char *pneedle);
#endif

#ifndef HAVE_STRCASECMP
int strcasecmp(const char *s1, const char *s2);
#endif

#ifndef HAVE_STRNCASECMP
int strncasecmp(const char *s1, const char *s2, size_t n);
#endif

#ifndef HAVE_GETTIMEOFDAY
int gettimeofday(struct timeval *tv, struct timeval *tz);
#endif

#ifndef HAVE_SLEEP
unsigned int sleep(unsigned int seconds);
#endif

/* Strncpy is like strcpy() except it ALWAYS zero-terminates, even if
   it must truncate */
int Strncpy(char *dest, const char *src, size_t n);


/* Trivial function that returns nonzero if all characters in str of
   length strlength are printable (as defined by isprint()) */
int stringisprintable(const char *str, int strlength);

/* Convert non-printable characters to replchar in the string */
void replacenonprintable(char *str, int strlength, char replchar);

/* A few simple wrappers for the most common memory allocation routines which will exit() if the
	allocation fails, so you don't always have to check -- see nbase_memalloc.c */
void *safe_malloc(size_t size);
void *safe_realloc(void *ptr, size_t size);
/* Zero-initializing version of safe_malloc */
void *safe_zalloc(size_t size);

  /* Some routines for obtaining simple (not secure on systems that
     lack /dev/random and friends' "random" numbers */
int get_random_bytes(void *buf, int numbytes);
int get_random_int();
unsigned short get_random_ushort();
unsigned int get_random_uint();
u32 get_random_u32();
u16 get_random_u16();
u8 get_random_u8();

/* CRC16 Cyclic Redundancy Check  */
unsigned long crc16(unsigned char *buf, int len);

#ifndef STDIN_FILENO
#define STDIN_FILENO 0
#endif

#ifndef STDOUT_FILENO
#define STDOUT_FILENO 1
#endif

#ifndef STDERR_FILENO
#define STDERR_FILENO 2
#endif

#include "nbase_ipv6.h"

#ifdef __cplusplus
}
#endif

#endif /* NBASE_H */