diff options
Diffstat (limited to 'src/util.h')
| -rw-r--r-- | src/util.h | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/src/util.h b/src/util.h index bee2749c16..c9614d3055 100644 --- a/src/util.h +++ b/src/util.h @@ -35,7 +35,6 @@ typedef unsigned long long uint64; static const int64 COIN = 100000000; static const int64 CENT = 1000000; -#define loop for (;;) #define BEGIN(a) ((char*)&(a)) #define END(a) ((char*)&((&(a))[1])) #define UBEGIN(a) ((unsigned char*)&(a)) @@ -208,7 +207,9 @@ boost::filesystem::path GetDefaultDataDir(); const boost::filesystem::path &GetDataDir(bool fNetSpecific = true); boost::filesystem::path GetConfigFile(); boost::filesystem::path GetPidFile(); +#ifndef WIN32 void CreatePidFile(const boost::filesystem::path &path, pid_t pid); +#endif void ReadConfigFile(std::map<std::string, std::string>& mapSettingsRet, std::map<std::string, std::vector<std::string> >& mapMultiSettingsRet); #ifdef WIN32 boost::filesystem::path GetSpecialFolderPath(int nFolder, bool fCreate = true); @@ -436,6 +437,21 @@ static inline uint32_t insecure_rand(void) */ void seed_insecure_rand(bool fDeterministic=false); +/** + * Timing-attack-resistant comparison. + * Takes time proportional to length + * of first argument. + */ +template <typename T> +bool TimingResistantEqual(const T& a, const T& b) +{ + if (b.size() == 0) return a.size() == 0; + size_t accumulator = a.size() ^ b.size(); + for (size_t i = 0; i < a.size(); i++) + accumulator |= a[i] ^ b[i%b.size()]; + return accumulator == 0; +} + /** Median filter over a stream of values. * Returns the median of the last N numbers */ |