mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2025-03-12 04:36:29 -07:00
Moar refactoring
This commit is contained in:
Adam Ierymenko
parent
72361fb1c8
commit
23d6a3aacd
21
node/Str.hpp
21
node/Str.hpp
@ -22,7 +22,7 @@
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#include <string>
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#define ZT_STR_CAPACITY 254
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#define ZT_STR_CAPACITY 1021
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namespace ZeroTier {
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@ -197,25 +197,8 @@ public:
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return h;
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}
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template<unsigned int C>
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inline void serialize(Buffer<C> &b,const bool forSign = false) const
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{
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b.append(_l);
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b.append(_s,(unsigned int)_l);
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}
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template<unsigned int C>
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inline unsigned int deserialize(const Buffer<C> &b,unsigned int startAt = 0)
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{
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unsigned int p = startAt;
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_l = (uint8_t)b[p++];
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memcpy(_s,b.field(p,(unsigned int)_l),(unsigned long)_l);
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p += (unsigned int)_l;
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return (p - startAt);
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}
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private:
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uint8_t _l;
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uint16_t _l;
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char _s[ZT_STR_CAPACITY+1];
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};
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@ -40,8 +40,6 @@
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#include "AES.hpp"
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#include "SHA512.hpp"
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namespace ZeroTier {
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#if (defined(__amd64) || defined(__amd64__) || defined(__x86_64) || defined(__x86_64__) || defined(__AMD64) || defined(__AMD64__) || defined(_M_X64))
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#include <immintrin.h>
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static bool _zt_rdrand_supported()
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@ -63,7 +61,11 @@ static bool _zt_rdrand_supported()
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static const bool _rdrandSupported = _zt_rdrand_supported();
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#endif
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const char Utils::HEXCHARS[16] = { '0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f' };
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namespace ZeroTier {
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namespace Utils {
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const char HEXCHARS[16] = { '0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f' };
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// Crazy hack to force memory to be securely zeroed in spite of the best efforts of optimizing compilers.
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static void _Utils_doBurn(volatile uint8_t *ptr,unsigned int len)
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@ -72,7 +74,7 @@ static void _Utils_doBurn(volatile uint8_t *ptr,unsigned int len)
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while (ptr != end) *(ptr++) = (uint8_t)0;
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}
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static void (*volatile _Utils_doBurn_ptr)(volatile uint8_t *,unsigned int) = _Utils_doBurn;
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void Utils::burn(void *ptr,unsigned int len) { (_Utils_doBurn_ptr)((volatile uint8_t *)ptr,len); }
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void burn(void *ptr,unsigned int len) { (_Utils_doBurn_ptr)((volatile uint8_t *)ptr,len); }
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static unsigned long _Utils_itoa(unsigned long n,char *s)
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{
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@ -84,7 +86,7 @@ static unsigned long _Utils_itoa(unsigned long n,char *s)
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s[pos] = '0' + (char)(n % 10);
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return pos + 1;
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}
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char *Utils::decimal(unsigned long n,char s[24])
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char *decimal(unsigned long n,char s[24])
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{
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if (n == 0) {
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s[0] = '0';
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@ -95,7 +97,7 @@ char *Utils::decimal(unsigned long n,char s[24])
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return s;
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}
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unsigned short Utils::crc16(const void *buf,unsigned int len)
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unsigned short crc16(const void *buf,unsigned int len)
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{
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static const uint16_t crc16tab[256]= {
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0x0000,0x1021,0x2042,0x3063,0x4084,0x50a5,0x60c6,0x70e7,
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@ -138,7 +140,7 @@ unsigned short Utils::crc16(const void *buf,unsigned int len)
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return crc;
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}
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unsigned int Utils::unhex(const char *h,void *buf,unsigned int buflen)
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unsigned int unhex(const char *h,void *buf,unsigned int buflen)
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{
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unsigned int l = 0;
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while (l < buflen) {
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@ -169,7 +171,7 @@ unsigned int Utils::unhex(const char *h,void *buf,unsigned int buflen)
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return l;
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}
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unsigned int Utils::unhex(const char *h,unsigned int hlen,void *buf,unsigned int buflen)
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unsigned int unhex(const char *h,unsigned int hlen,void *buf,unsigned int buflen)
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{
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unsigned int l = 0;
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const char *hend = h + hlen;
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@ -203,7 +205,7 @@ unsigned int Utils::unhex(const char *h,unsigned int hlen,void *buf,unsigned int
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return l;
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}
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void Utils::getSecureRandom(void *buf,unsigned int bytes)
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void getSecureRandom(void *buf,unsigned int bytes)
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{
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static Mutex globalLock;
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static bool initialized = false;
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@ -281,7 +283,7 @@ void Utils::getSecureRandom(void *buf,unsigned int bytes)
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}
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}
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int Utils::b32e(const uint8_t *data,int length,char *result,int bufSize)
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int b32e(const uint8_t *data,int length,char *result,int bufSize)
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{
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if (length < 0 || length > (1 << 28)) {
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result[0] = (char)0;
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@ -317,7 +319,7 @@ int Utils::b32e(const uint8_t *data,int length,char *result,int bufSize)
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return -1;
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}
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int Utils::b32d(const char *encoded,uint8_t *result,int bufSize)
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int b32d(const char *encoded,uint8_t *result,int bufSize)
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{
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int buffer = 0;
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int bitsLeft = 0;
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@ -357,7 +359,7 @@ int Utils::b32d(const char *encoded,uint8_t *result,int bufSize)
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return count;
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}
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unsigned int Utils::b64e(const uint8_t *in,unsigned int inlen,char *out,unsigned int outlen)
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unsigned int b64e(const uint8_t *in,unsigned int inlen,char *out,unsigned int outlen)
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{
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static const char base64en[64] = { 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/' };
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unsigned int i = 0,j = 0;
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@ -404,7 +406,7 @@ unsigned int Utils::b64e(const uint8_t *in,unsigned int inlen,char *out,unsigned
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return j;
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}
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unsigned int Utils::b64d(const char *in,unsigned char *out,unsigned int outlen)
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unsigned int b64d(const char *in,unsigned char *out,unsigned int outlen)
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{
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static const uint8_t base64de[256] = { 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,62,255,255,255,63,52,53,54,55,56,57,58,59,60,61,255,255,255,255,255,255,255,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,255,255,255,255,255,255,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,255,255,255,255,255 };
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unsigned int i = 0;
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@ -437,7 +439,7 @@ unsigned int Utils::b64d(const char *in,unsigned char *out,unsigned int outlen)
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}
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#define ROL64(x,k) (((x) << (k)) | ((x) >> (64 - (k))))
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uint64_t Utils::random()
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uint64_t random()
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{
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// https://en.wikipedia.org/wiki/Xorshift#xoshiro256**
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static Mutex l;
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@ -460,4 +462,6 @@ uint64_t Utils::random()
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return result;
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}
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} // namespace Utils
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} // namespace ZeroTier
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551
node/Utils.hpp
551
node/Utils.hpp
@ -29,355 +29,352 @@
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namespace ZeroTier {
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namespace Utils {
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/**
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* Miscellaneous utility functions and global constants
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* Hexadecimal characters 0-f
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*/
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class Utils
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const char HEXCHARS[16];
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/**
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* Perform a time-invariant binary comparison
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*
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* @param a First binary string
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* @param b Second binary string
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* @param len Length of strings
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* @return True if strings are equal
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*/
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ZT_ALWAYS_INLINE bool secureEq(const void *a,const void *b,unsigned int len)
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{
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public:
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/**
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* Hexadecimal characters 0-f
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*/
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static const char HEXCHARS[16];
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uint8_t diff = 0;
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for(unsigned int i=0;i<len;++i)
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diff |= ( (reinterpret_cast<const uint8_t *>(a))[i] ^ (reinterpret_cast<const uint8_t *>(b))[i] );
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return (diff == 0);
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}
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/**
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* Perform a time-invariant binary comparison
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*
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* @param a First binary string
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* @param b Second binary string
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* @param len Length of strings
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* @return True if strings are equal
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*/
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static ZT_ALWAYS_INLINE bool secureEq(const void *a,const void *b,unsigned int len)
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{
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uint8_t diff = 0;
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for(unsigned int i=0;i<len;++i)
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diff |= ( (reinterpret_cast<const uint8_t *>(a))[i] ^ (reinterpret_cast<const uint8_t *>(b))[i] );
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return (diff == 0);
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/**
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* Zero memory, ensuring to avoid any compiler optimizations or other things that may stop this.
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*/
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void burn(void *ptr,unsigned int len);
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/**
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* @param n Number to convert
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* @param s Buffer, at least 24 bytes in size
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* @return String containing 'n' in base 10 form
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*/
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char *decimal(unsigned long n,char s[24]);
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/**
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* Compute CRC16-CCITT
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*/
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uint16_t crc16(const void *buf,unsigned int len);
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/**
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* Convert an unsigned integer into hex
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*
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* @param i Any unsigned integer
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* @param s Buffer to receive hex, must be at least (2*sizeof(i))+1 in size or overflow will occur.
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* @return Pointer to s containing hex string with trailing zero byte
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*/
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template<typename I>
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static ZT_ALWAYS_INLINE char *hex(I x,char *s)
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{
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char *const r = s;
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for(unsigned int i=0,b=(sizeof(x)*8);i<sizeof(x);++i) {
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*(s++) = HEXCHARS[(x >> (b -= 4)) & 0xf];
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*(s++) = HEXCHARS[(x >> (b -= 4)) & 0xf];
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}
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*s = (char)0;
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return r;
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}
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/**
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* Zero memory, ensuring to avoid any compiler optimizations or other things that may stop this.
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*/
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static void burn(void *ptr,unsigned int len);
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/**
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* Convert the least significant 40 bits of a uint64_t to hex
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*
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* @param i Unsigned 64-bit int
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* @param s Buffer of size [11] to receive 10 hex characters
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* @return Pointer to buffer
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*/
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static ZT_ALWAYS_INLINE char *hex10(uint64_t i,char s[11])
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{
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s[0] = HEXCHARS[(i >> 36) & 0xf];
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s[1] = HEXCHARS[(i >> 32) & 0xf];
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s[2] = HEXCHARS[(i >> 28) & 0xf];
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s[3] = HEXCHARS[(i >> 24) & 0xf];
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s[4] = HEXCHARS[(i >> 20) & 0xf];
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s[5] = HEXCHARS[(i >> 16) & 0xf];
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s[6] = HEXCHARS[(i >> 12) & 0xf];
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s[7] = HEXCHARS[(i >> 8) & 0xf];
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s[8] = HEXCHARS[(i >> 4) & 0xf];
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s[9] = HEXCHARS[i & 0xf];
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s[10] = (char)0;
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return s;
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}
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/**
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* @param n Number to convert
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* @param s Buffer, at least 24 bytes in size
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* @return String containing 'n' in base 10 form
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*/
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static char *decimal(unsigned long n,char s[24]);
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/**
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* Compute CRC16-CCITT
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*/
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static uint16_t crc16(const void *buf,unsigned int len);
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/**
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* Convert an unsigned integer into hex
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*
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* @param i Any unsigned integer
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* @param s Buffer to receive hex, must be at least (2*sizeof(i))+1 in size or overflow will occur.
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* @return Pointer to s containing hex string with trailing zero byte
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*/
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template<typename I>
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static ZT_ALWAYS_INLINE char *hex(I x,char *s)
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{
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char *const r = s;
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for(unsigned int i=0,b=(sizeof(x)*8);i<sizeof(x);++i) {
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*(s++) = HEXCHARS[(x >> (b -= 4)) & 0xf];
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*(s++) = HEXCHARS[(x >> (b -= 4)) & 0xf];
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}
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*s = (char)0;
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return r;
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/**
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* Convert a byte array into hex
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*
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* @param d Bytes
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* @param l Length of bytes
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* @param s String buffer, must be at least (l*2)+1 in size or overflow will occur
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* @return Pointer to filled string buffer
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*/
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static ZT_ALWAYS_INLINE char *hex(const void *d,unsigned int l,char *s)
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{
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char *const save = s;
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for(unsigned int i=0;i<l;++i) {
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const unsigned int b = reinterpret_cast<const uint8_t *>(d)[i];
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*(s++) = HEXCHARS[b >> 4];
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*(s++) = HEXCHARS[b & 0xf];
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}
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*s = (char)0;
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return save;
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}
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/**
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* Convert the least significant 40 bits of a uint64_t to hex
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*
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* @param i Unsigned 64-bit int
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* @param s Buffer of size [11] to receive 10 hex characters
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* @return Pointer to buffer
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*/
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static ZT_ALWAYS_INLINE char *hex10(uint64_t i,char s[11])
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{
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s[0] = HEXCHARS[(i >> 36) & 0xf];
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s[1] = HEXCHARS[(i >> 32) & 0xf];
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s[2] = HEXCHARS[(i >> 28) & 0xf];
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s[3] = HEXCHARS[(i >> 24) & 0xf];
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s[4] = HEXCHARS[(i >> 20) & 0xf];
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s[5] = HEXCHARS[(i >> 16) & 0xf];
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s[6] = HEXCHARS[(i >> 12) & 0xf];
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s[7] = HEXCHARS[(i >> 8) & 0xf];
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s[8] = HEXCHARS[(i >> 4) & 0xf];
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s[9] = HEXCHARS[i & 0xf];
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s[10] = (char)0;
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return s;
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}
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unsigned int unhex(const char *h,void *buf,unsigned int buflen);
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unsigned int unhex(const char *h,unsigned int hlen,void *buf,unsigned int buflen);
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/**
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* Convert a byte array into hex
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*
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* @param d Bytes
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* @param l Length of bytes
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* @param s String buffer, must be at least (l*2)+1 in size or overflow will occur
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* @return Pointer to filled string buffer
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*/
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static ZT_ALWAYS_INLINE char *hex(const void *d,unsigned int l,char *s)
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{
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char *const save = s;
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for(unsigned int i=0;i<l;++i) {
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const unsigned int b = reinterpret_cast<const uint8_t *>(d)[i];
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*(s++) = HEXCHARS[b >> 4];
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*(s++) = HEXCHARS[b & 0xf];
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}
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*s = (char)0;
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return save;
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}
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/**
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* Generate secure random bytes
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*
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* This will try to use whatever OS sources of entropy are available. It's
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* guarded by an internal mutex so it's thread-safe.
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*
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* @param buf Buffer to fill
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* @param bytes Number of random bytes to generate
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*/
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void getSecureRandom(void *buf,unsigned int bytes);
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static unsigned int unhex(const char *h,void *buf,unsigned int buflen);
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static unsigned int unhex(const char *h,unsigned int hlen,void *buf,unsigned int buflen);
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/**
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* Get a 64-bit unsigned secure random number
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*/
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static ZT_ALWAYS_INLINE uint64_t getSecureRandom64()
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{
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uint64_t x;
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getSecureRandom(&x,sizeof(x));
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return x;
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}
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/**
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* Generate secure random bytes
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*
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* This will try to use whatever OS sources of entropy are available. It's
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* guarded by an internal mutex so it's thread-safe.
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*
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* @param buf Buffer to fill
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* @param bytes Number of random bytes to generate
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*/
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static void getSecureRandom(void *buf,unsigned int bytes);
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int b32e(const uint8_t *data,int length,char *result,int bufSize);
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int b32d(const char *encoded, uint8_t *result, int bufSize);
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/**
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* Get a 64-bit unsigned secure random number
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*/
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static ZT_ALWAYS_INLINE uint64_t getSecureRandom64()
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{
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uint64_t x;
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getSecureRandom(&x,sizeof(x));
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return x;
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}
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static ZT_ALWAYS_INLINE unsigned int b64MaxEncodedSize(const unsigned int s) { return ((((s + 2) / 3) * 4) + 1); }
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unsigned int b64e(const uint8_t *in,unsigned int inlen,char *out,unsigned int outlen);
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unsigned int b64d(const char *in,uint8_t *out,unsigned int outlen);
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static int b32e(const uint8_t *data,int length,char *result,int bufSize);
|
||||
static int b32d(const char *encoded, uint8_t *result, int bufSize);
|
||||
/**
|
||||
* Get a non-cryptographic random integer
|
||||
*/
|
||||
uint64_t random();
|
||||
|
||||
static ZT_ALWAYS_INLINE unsigned int b64MaxEncodedSize(const unsigned int s) { return ((((s + 2) / 3) * 4) + 1); }
|
||||
static unsigned int b64e(const uint8_t *in,unsigned int inlen,char *out,unsigned int outlen);
|
||||
static unsigned int b64d(const char *in,uint8_t *out,unsigned int outlen);
|
||||
static ZT_ALWAYS_INLINE float normalize(float value, int64_t bigMin, int64_t bigMax, int32_t targetMin, int32_t targetMax)
|
||||
{
|
||||
int64_t bigSpan = bigMax - bigMin;
|
||||
int64_t smallSpan = targetMax - targetMin;
|
||||
float valueScaled = (value - (float)bigMin) / (float)bigSpan;
|
||||
return (float)targetMin + valueScaled * (float)smallSpan;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get a non-cryptographic random integer
|
||||
*/
|
||||
static uint64_t random();
|
||||
|
||||
static ZT_ALWAYS_INLINE float normalize(float value, int64_t bigMin, int64_t bigMax, int32_t targetMin, int32_t targetMax)
|
||||
{
|
||||
int64_t bigSpan = bigMax - bigMin;
|
||||
int64_t smallSpan = targetMax - targetMin;
|
||||
float valueScaled = (value - (float)bigMin) / (float)bigSpan;
|
||||
return (float)targetMin + valueScaled * (float)smallSpan;
|
||||
}
|
||||
|
||||
/**
|
||||
* Tokenize a string (alias for strtok_r or strtok_s depending on platform)
|
||||
*
|
||||
* @param str String to split
|
||||
* @param delim Delimiters
|
||||
* @param saveptr Pointer to a char * for temporary reentrant storage
|
||||
*/
|
||||
static ZT_ALWAYS_INLINE char *stok(char *str,const char *delim,char **saveptr)
|
||||
{
|
||||
/**
|
||||
* Tokenize a string (alias for strtok_r or strtok_s depending on platform)
|
||||
*
|
||||
* @param str String to split
|
||||
* @param delim Delimiters
|
||||
* @param saveptr Pointer to a char * for temporary reentrant storage
|
||||
*/
|
||||
static ZT_ALWAYS_INLINE char *stok(char *str,const char *delim,char **saveptr)
|
||||
{
|
||||
#ifdef __WINDOWS__
|
||||
return strtok_s(str,delim,saveptr);
|
||||
return strtok_s(str,delim,saveptr);
|
||||
#else
|
||||
return strtok_r(str,delim,saveptr);
|
||||
return strtok_r(str,delim,saveptr);
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
static ZT_ALWAYS_INLINE unsigned int strToUInt(const char *s) { return (unsigned int)strtoul(s,(char **)0,10); }
|
||||
static ZT_ALWAYS_INLINE int strToInt(const char *s) { return (int)strtol(s,(char **)0,10); }
|
||||
static ZT_ALWAYS_INLINE unsigned long strToULong(const char *s) { return strtoul(s,(char **)0,10); }
|
||||
static ZT_ALWAYS_INLINE long strToLong(const char *s) { return strtol(s,(char **)0,10); }
|
||||
static ZT_ALWAYS_INLINE unsigned long long strToU64(const char *s)
|
||||
{
|
||||
static ZT_ALWAYS_INLINE unsigned int strToUInt(const char *s) { return (unsigned int)strtoul(s,(char **)0,10); }
|
||||
static ZT_ALWAYS_INLINE int strToInt(const char *s) { return (int)strtol(s,(char **)0,10); }
|
||||
static ZT_ALWAYS_INLINE unsigned long strToULong(const char *s) { return strtoul(s,(char **)0,10); }
|
||||
static ZT_ALWAYS_INLINE long strToLong(const char *s) { return strtol(s,(char **)0,10); }
|
||||
static ZT_ALWAYS_INLINE unsigned long long strToU64(const char *s)
|
||||
{
|
||||
#ifdef __WINDOWS__
|
||||
return (unsigned long long)_strtoui64(s,(char **)0,10);
|
||||
return (unsigned long long)_strtoui64(s,(char **)0,10);
|
||||
#else
|
||||
return strtoull(s,(char **)0,10);
|
||||
return strtoull(s,(char **)0,10);
|
||||
#endif
|
||||
}
|
||||
static ZT_ALWAYS_INLINE long long strTo64(const char *s)
|
||||
{
|
||||
}
|
||||
static ZT_ALWAYS_INLINE long long strTo64(const char *s)
|
||||
{
|
||||
#ifdef __WINDOWS__
|
||||
return (long long)_strtoi64(s,(char **)0,10);
|
||||
return (long long)_strtoi64(s,(char **)0,10);
|
||||
#else
|
||||
return strtoll(s,(char **)0,10);
|
||||
return strtoll(s,(char **)0,10);
|
||||
#endif
|
||||
}
|
||||
static ZT_ALWAYS_INLINE unsigned int hexStrToUInt(const char *s) { return (unsigned int)strtoul(s,(char **)0,16); }
|
||||
static ZT_ALWAYS_INLINE int hexStrToInt(const char *s) { return (int)strtol(s,(char **)0,16); }
|
||||
static ZT_ALWAYS_INLINE unsigned long hexStrToULong(const char *s) { return strtoul(s,(char **)0,16); }
|
||||
static ZT_ALWAYS_INLINE long hexStrToLong(const char *s) { return strtol(s,(char **)0,16); }
|
||||
static ZT_ALWAYS_INLINE unsigned long long hexStrToU64(const char *s)
|
||||
{
|
||||
}
|
||||
static ZT_ALWAYS_INLINE unsigned int hexStrToUInt(const char *s) { return (unsigned int)strtoul(s,(char **)0,16); }
|
||||
static ZT_ALWAYS_INLINE int hexStrToInt(const char *s) { return (int)strtol(s,(char **)0,16); }
|
||||
static ZT_ALWAYS_INLINE unsigned long hexStrToULong(const char *s) { return strtoul(s,(char **)0,16); }
|
||||
static ZT_ALWAYS_INLINE long hexStrToLong(const char *s) { return strtol(s,(char **)0,16); }
|
||||
static ZT_ALWAYS_INLINE unsigned long long hexStrToU64(const char *s)
|
||||
{
|
||||
#ifdef __WINDOWS__
|
||||
return (unsigned long long)_strtoui64(s,(char **)0,16);
|
||||
return (unsigned long long)_strtoui64(s,(char **)0,16);
|
||||
#else
|
||||
return strtoull(s,(char **)0,16);
|
||||
return strtoull(s,(char **)0,16);
|
||||
#endif
|
||||
}
|
||||
static ZT_ALWAYS_INLINE long long hexStrTo64(const char *s)
|
||||
{
|
||||
}
|
||||
static ZT_ALWAYS_INLINE long long hexStrTo64(const char *s)
|
||||
{
|
||||
#ifdef __WINDOWS__
|
||||
return (long long)_strtoi64(s,(char **)0,16);
|
||||
return (long long)_strtoi64(s,(char **)0,16);
|
||||
#else
|
||||
return strtoll(s,(char **)0,16);
|
||||
return strtoll(s,(char **)0,16);
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Perform a safe C string copy, ALWAYS null-terminating the result
|
||||
*
|
||||
* This will never ever EVER result in dest[] not being null-terminated
|
||||
* regardless of any input parameter (other than len==0 which is invalid).
|
||||
*
|
||||
* @param dest Destination buffer (must not be NULL)
|
||||
* @param len Length of dest[] (if zero, false is returned and nothing happens)
|
||||
* @param src Source string (if NULL, dest will receive a zero-length string and true is returned)
|
||||
* @return True on success, false on overflow (buffer will still be 0-terminated)
|
||||
*/
|
||||
static ZT_ALWAYS_INLINE bool scopy(char *dest,unsigned int len,const char *src)
|
||||
{
|
||||
if (!len)
|
||||
return false; // sanity check
|
||||
if (!src) {
|
||||
*dest = (char)0;
|
||||
return true;
|
||||
}
|
||||
char *const end = dest + len;
|
||||
while ((*dest++ = *src++)) {
|
||||
if (dest == end) {
|
||||
*(--dest) = (char)0;
|
||||
return false;
|
||||
}
|
||||
}
|
||||
/**
|
||||
* Perform a safe C string copy, ALWAYS null-terminating the result
|
||||
*
|
||||
* This will never ever EVER result in dest[] not being null-terminated
|
||||
* regardless of any input parameter (other than len==0 which is invalid).
|
||||
*
|
||||
* @param dest Destination buffer (must not be NULL)
|
||||
* @param len Length of dest[] (if zero, false is returned and nothing happens)
|
||||
* @param src Source string (if NULL, dest will receive a zero-length string and true is returned)
|
||||
* @return True on success, false on overflow (buffer will still be 0-terminated)
|
||||
*/
|
||||
static ZT_ALWAYS_INLINE bool scopy(char *dest,unsigned int len,const char *src)
|
||||
{
|
||||
if (!len)
|
||||
return false; // sanity check
|
||||
if (!src) {
|
||||
*dest = (char)0;
|
||||
return true;
|
||||
}
|
||||
char *const end = dest + len;
|
||||
while ((*dest++ = *src++)) {
|
||||
if (dest == end) {
|
||||
*(--dest) = (char)0;
|
||||
return false;
|
||||
}
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
#ifdef __GNUC__
|
||||
static ZT_ALWAYS_INLINE unsigned int countBits(const uint8_t v) { return (unsigned int)__builtin_popcount((unsigned int)v); }
|
||||
static ZT_ALWAYS_INLINE unsigned int countBits(const uint16_t v) { return (unsigned int)__builtin_popcount((unsigned int)v); }
|
||||
static ZT_ALWAYS_INLINE unsigned int countBits(const uint32_t v) { return (unsigned int)__builtin_popcountl((unsigned long)v); }
|
||||
static ZT_ALWAYS_INLINE unsigned int countBits(const uint64_t v) { return (unsigned int)__builtin_popcountll((unsigned long long)v); }
|
||||
static ZT_ALWAYS_INLINE unsigned int countBits(const uint8_t v) { return (unsigned int)__builtin_popcount((unsigned int)v); }
|
||||
static ZT_ALWAYS_INLINE unsigned int countBits(const uint16_t v) { return (unsigned int)__builtin_popcount((unsigned int)v); }
|
||||
static ZT_ALWAYS_INLINE unsigned int countBits(const uint32_t v) { return (unsigned int)__builtin_popcountl((unsigned long)v); }
|
||||
static ZT_ALWAYS_INLINE unsigned int countBits(const uint64_t v) { return (unsigned int)__builtin_popcountll((unsigned long long)v); }
|
||||
#else
|
||||
/**
|
||||
* Count the number of bits set in an integer
|
||||
*
|
||||
* @param v Unsigned integer
|
||||
* @return Number of bits set in this integer (0-bits in integer)
|
||||
*/
|
||||
template<typename T>
|
||||
static ZT_ALWAYS_INLINE unsigned int countBits(T v)
|
||||
{
|
||||
v = v - ((v >> 1) & (T)~(T)0/3);
|
||||
v = (v & (T)~(T)0/15*3) + ((v >> 2) & (T)~(T)0/15*3);
|
||||
v = (v + (v >> 4)) & (T)~(T)0/255*15;
|
||||
return (unsigned int)((v * ((~((T)0))/((T)255))) >> ((sizeof(T) - 1) * 8));
|
||||
}
|
||||
/**
|
||||
* Count the number of bits set in an integer
|
||||
*
|
||||
* @param v Unsigned integer
|
||||
* @return Number of bits set in this integer (0-bits in integer)
|
||||
*/
|
||||
template<typename T>
|
||||
static ZT_ALWAYS_INLINE unsigned int countBits(T v)
|
||||
{
|
||||
v = v - ((v >> 1) & (T)~(T)0/3);
|
||||
v = (v & (T)~(T)0/15*3) + ((v >> 2) & (T)~(T)0/15*3);
|
||||
v = (v + (v >> 4)) & (T)~(T)0/255*15;
|
||||
return (unsigned int)((v * ((~((T)0))/((T)255))) >> ((sizeof(T) - 1) * 8));
|
||||
}
|
||||
#endif
|
||||
|
||||
// Byte swappers for big/little endian conversion
|
||||
#if __BYTE_ORDER == __LITTLE_ENDIAN
|
||||
static ZT_ALWAYS_INLINE uint8_t hton(uint8_t n) { return n; }
|
||||
static ZT_ALWAYS_INLINE int8_t hton(int8_t n) { return n; }
|
||||
static ZT_ALWAYS_INLINE uint16_t hton(uint16_t n) { return htons(n); }
|
||||
static ZT_ALWAYS_INLINE int16_t hton(int16_t n) { return (int16_t)Utils::hton((uint16_t)n); }
|
||||
static ZT_ALWAYS_INLINE uint32_t hton(uint32_t n)
|
||||
{
|
||||
static ZT_ALWAYS_INLINE uint8_t hton(uint8_t n) { return n; }
|
||||
static ZT_ALWAYS_INLINE int8_t hton(int8_t n) { return n; }
|
||||
static ZT_ALWAYS_INLINE uint16_t hton(uint16_t n) { return htons(n); }
|
||||
static ZT_ALWAYS_INLINE int16_t hton(int16_t n) { return (int16_t)Utils::hton((uint16_t)n); }
|
||||
static ZT_ALWAYS_INLINE uint32_t hton(uint32_t n)
|
||||
{
|
||||
#if defined(__GNUC__)
|
||||
#if defined(__FreeBSD__)
|
||||
return htonl(n);
|
||||
return htonl(n);
|
||||
#elif (!defined(__OpenBSD__))
|
||||
return __builtin_bswap32(n);
|
||||
return __builtin_bswap32(n);
|
||||
#endif
|
||||
#else
|
||||
return htonl(n);
|
||||
return htonl(n);
|
||||
#endif
|
||||
}
|
||||
static ZT_ALWAYS_INLINE int32_t hton(int32_t n) { return (int32_t)Utils::hton((uint32_t)n); }
|
||||
static ZT_ALWAYS_INLINE uint64_t hton(uint64_t n)
|
||||
{
|
||||
}
|
||||
static ZT_ALWAYS_INLINE int32_t hton(int32_t n) { return (int32_t)Utils::hton((uint32_t)n); }
|
||||
static ZT_ALWAYS_INLINE uint64_t hton(uint64_t n)
|
||||
{
|
||||
#if defined(__GNUC__)
|
||||
#if defined(__FreeBSD__)
|
||||
return bswap64(n);
|
||||
return bswap64(n);
|
||||
#elif (!defined(__OpenBSD__))
|
||||
return __builtin_bswap64(n);
|
||||
return __builtin_bswap64(n);
|
||||
#endif
|
||||
#else
|
||||
return (
|
||||
((n & 0x00000000000000FFULL) << 56) |
|
||||
((n & 0x000000000000FF00ULL) << 40) |
|
||||
((n & 0x0000000000FF0000ULL) << 24) |
|
||||
((n & 0x00000000FF000000ULL) << 8) |
|
||||
((n & 0x000000FF00000000ULL) >> 8) |
|
||||
((n & 0x0000FF0000000000ULL) >> 24) |
|
||||
((n & 0x00FF000000000000ULL) >> 40) |
|
||||
((n & 0xFF00000000000000ULL) >> 56)
|
||||
);
|
||||
return (
|
||||
((n & 0x00000000000000FFULL) << 56) |
|
||||
((n & 0x000000000000FF00ULL) << 40) |
|
||||
((n & 0x0000000000FF0000ULL) << 24) |
|
||||
((n & 0x00000000FF000000ULL) << 8) |
|
||||
((n & 0x000000FF00000000ULL) >> 8) |
|
||||
((n & 0x0000FF0000000000ULL) >> 24) |
|
||||
((n & 0x00FF000000000000ULL) >> 40) |
|
||||
((n & 0xFF00000000000000ULL) >> 56)
|
||||
);
|
||||
#endif
|
||||
}
|
||||
static ZT_ALWAYS_INLINE int64_t hton(int64_t n) { return (int64_t)hton((uint64_t)n); }
|
||||
}
|
||||
static ZT_ALWAYS_INLINE int64_t hton(int64_t n) { return (int64_t)hton((uint64_t)n); }
|
||||
#else
|
||||
template<typename T>
|
||||
static ZT_ALWAYS_INLINE T hton(T n) { return n; }
|
||||
template<typename T>
|
||||
static ZT_ALWAYS_INLINE T hton(T n) { return n; }
|
||||
#endif
|
||||
|
||||
#if __BYTE_ORDER == __LITTLE_ENDIAN
|
||||
static ZT_ALWAYS_INLINE uint8_t ntoh(uint8_t n) { return n; }
|
||||
static ZT_ALWAYS_INLINE int8_t ntoh(int8_t n) { return n; }
|
||||
static ZT_ALWAYS_INLINE uint16_t ntoh(uint16_t n) { return ntohs(n); }
|
||||
static ZT_ALWAYS_INLINE int16_t ntoh(int16_t n) { return (int16_t)Utils::ntoh((uint16_t)n); }
|
||||
static ZT_ALWAYS_INLINE uint32_t ntoh(uint32_t n)
|
||||
{
|
||||
static ZT_ALWAYS_INLINE uint8_t ntoh(uint8_t n) { return n; }
|
||||
static ZT_ALWAYS_INLINE int8_t ntoh(int8_t n) { return n; }
|
||||
static ZT_ALWAYS_INLINE uint16_t ntoh(uint16_t n) { return ntohs(n); }
|
||||
static ZT_ALWAYS_INLINE int16_t ntoh(int16_t n) { return (int16_t)Utils::ntoh((uint16_t)n); }
|
||||
static ZT_ALWAYS_INLINE uint32_t ntoh(uint32_t n)
|
||||
{
|
||||
#if defined(__GNUC__)
|
||||
#if defined(__FreeBSD__)
|
||||
return ntohl(n);
|
||||
return ntohl(n);
|
||||
#elif (!defined(__OpenBSD__))
|
||||
return __builtin_bswap32(n);
|
||||
return __builtin_bswap32(n);
|
||||
#endif
|
||||
#else
|
||||
return ntohl(n);
|
||||
return ntohl(n);
|
||||
#endif
|
||||
}
|
||||
static ZT_ALWAYS_INLINE int32_t ntoh(int32_t n) { return (int32_t)Utils::ntoh((uint32_t)n); }
|
||||
static ZT_ALWAYS_INLINE uint64_t ntoh(uint64_t n)
|
||||
{
|
||||
}
|
||||
static ZT_ALWAYS_INLINE int32_t ntoh(int32_t n) { return (int32_t)Utils::ntoh((uint32_t)n); }
|
||||
static ZT_ALWAYS_INLINE uint64_t ntoh(uint64_t n)
|
||||
{
|
||||
#if defined(__GNUC__)
|
||||
#if defined(__FreeBSD__)
|
||||
return bswap64(n);
|
||||
return bswap64(n);
|
||||
#elif (!defined(__OpenBSD__))
|
||||
return __builtin_bswap64(n);
|
||||
return __builtin_bswap64(n);
|
||||
#endif
|
||||
#else
|
||||
return (
|
||||
((n & 0x00000000000000FFULL) << 56) |
|
||||
((n & 0x000000000000FF00ULL) << 40) |
|
||||
((n & 0x0000000000FF0000ULL) << 24) |
|
||||
((n & 0x00000000FF000000ULL) << 8) |
|
||||
((n & 0x000000FF00000000ULL) >> 8) |
|
||||
((n & 0x0000FF0000000000ULL) >> 24) |
|
||||
((n & 0x00FF000000000000ULL) >> 40) |
|
||||
((n & 0xFF00000000000000ULL) >> 56)
|
||||
);
|
||||
return (
|
||||
((n & 0x00000000000000FFULL) << 56) |
|
||||
((n & 0x000000000000FF00ULL) << 40) |
|
||||
((n & 0x0000000000FF0000ULL) << 24) |
|
||||
((n & 0x00000000FF000000ULL) << 8) |
|
||||
((n & 0x000000FF00000000ULL) >> 8) |
|
||||
((n & 0x0000FF0000000000ULL) >> 24) |
|
||||
((n & 0x00FF000000000000ULL) >> 40) |
|
||||
((n & 0xFF00000000000000ULL) >> 56)
|
||||
);
|
||||
#endif
|
||||
}
|
||||
static ZT_ALWAYS_INLINE int64_t ntoh(int64_t n) { return (int64_t)ntoh((uint64_t)n); }
|
||||
}
|
||||
static ZT_ALWAYS_INLINE int64_t ntoh(int64_t n) { return (int64_t)ntoh((uint64_t)n); }
|
||||
#else
|
||||
template<typename T>
|
||||
static ZT_ALWAYS_INLINE T ntoh(T n) { return n; }
|
||||
template<typename T>
|
||||
static ZT_ALWAYS_INLINE T ntoh(T n) { return n; }
|
||||
#endif
|
||||
};
|
||||
|
||||
} // namespace Utils
|
||||
|
||||
} // namespace ZeroTier
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user