Clean OS-dep stuff out of node/Utils.

This commit is contained in:
Adam Ierymenko 2015-04-08 16:55:00 -07:00
parent 12431ce95d
commit 0751eaabd8
2 changed files with 0 additions and 385 deletions

View File

@ -54,30 +54,6 @@ namespace ZeroTier {
const char Utils::HEXCHARS[16] = { '0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f' };
#ifdef __UNIX_LIKE__
bool Utils::redirectUnixOutputs(const char *stdoutPath,const char *stderrPath)
throw()
{
int fdout = ::open(stdoutPath,O_WRONLY|O_CREAT,0600);
if (fdout > 0) {
int fderr;
if (stderrPath) {
fderr = ::open(stderrPath,O_WRONLY|O_CREAT,0600);
if (fderr <= 0) {
::close(fdout);
return false;
}
} else fderr = fdout;
::close(STDOUT_FILENO);
::close(STDERR_FILENO);
::dup2(fdout,STDOUT_FILENO);
::dup2(fderr,STDERR_FILENO);
return true;
}
return false;
}
#endif // __UNIX_LIKE__
static void _Utils_doBurn(char *ptr,unsigned int len)
{
for(unsigned int i=0;i<len;++i)
@ -94,42 +70,6 @@ void Utils::burn(void *ptr,unsigned int len)
(_Utils_doBurn_ptr)((char *)ptr,len);
}
std::map<std::string,bool> Utils::listDirectory(const char *path)
{
std::map<std::string,bool> r;
#ifdef __WINDOWS__
HANDLE hFind;
WIN32_FIND_DATAA ffd;
if ((hFind = FindFirstFileA((std::string(path) + "\\*").c_str(),&ffd)) != INVALID_HANDLE_VALUE) {
do {
if ((strcmp(ffd.cFileName,"."))&&(strcmp(ffd.cFileName,"..")))
r[std::string(ffd.cFileName)] = ((ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0);
} while (FindNextFileA(hFind,&ffd));
FindClose(hFind);
}
#else
struct dirent de;
struct dirent *dptr;
DIR *d = opendir(path);
if (!d)
return r;
dptr = (struct dirent *)0;
for(;;) {
if (readdir_r(d,&de,&dptr))
break;
if (dptr) {
if ((strcmp(dptr->d_name,"."))&&(strcmp(dptr->d_name,"..")))
r[std::string(dptr->d_name)] = (dptr->d_type == DT_DIR);
} else break;
}
#endif
return r;
}
std::string Utils::hex(const void *data,unsigned int len)
{
std::string r;
@ -268,102 +208,6 @@ void Utils::getSecureRandom(void *buf,unsigned int bytes)
#endif // __WINDOWS__
}
void Utils::lockDownFile(const char *path,bool isDir)
{
#ifdef __UNIX_LIKE__
chmod(path,isDir ? 0700 : 0600);
#else
#ifdef __WINDOWS__
{
STARTUPINFOA startupInfo;
PROCESS_INFORMATION processInfo;
startupInfo.cb = sizeof(startupInfo);
memset(&startupInfo,0,sizeof(STARTUPINFOA));
memset(&processInfo,0,sizeof(PROCESS_INFORMATION));
if (CreateProcessA(NULL,(LPSTR)(std::string("C:\\Windows\\System32\\icacls.exe \"") + path + "\" /inheritance:d /Q").c_str(),NULL,NULL,FALSE,0,NULL,NULL,&startupInfo,&processInfo)) {
WaitForSingleObject(processInfo.hProcess,INFINITE);
CloseHandle(processInfo.hProcess);
CloseHandle(processInfo.hThread);
}
startupInfo.cb = sizeof(startupInfo);
memset(&startupInfo,0,sizeof(STARTUPINFOA));
memset(&processInfo,0,sizeof(PROCESS_INFORMATION));
if (CreateProcessA(NULL,(LPSTR)(std::string("C:\\Windows\\System32\\icacls.exe \"") + path + "\" /remove *S-1-5-32-545 /Q").c_str(),NULL,NULL,FALSE,0,NULL,NULL,&startupInfo,&processInfo)) {
WaitForSingleObject(processInfo.hProcess,INFINITE);
CloseHandle(processInfo.hProcess);
CloseHandle(processInfo.hThread);
}
}
#endif
#endif
}
uint64_t Utils::getLastModified(const char *path)
{
struct stat s;
if (stat(path,&s))
return 0;
return (((uint64_t)s.st_mtime) * 1000ULL);
}
bool Utils::fileExists(const char *path,bool followLinks)
{
struct stat s;
#ifdef __UNIX_LIKE__
if (!followLinks)
return (lstat(path,&s) == 0);
#endif
return (stat(path,&s) == 0);
}
int64_t Utils::getFileSize(const char *path)
{
struct stat s;
if (stat(path,&s))
return -1;
#ifdef __WINDOWS__
return s.st_size;
#else
if (S_ISREG(s.st_mode))
return s.st_size;
#endif
return -1;
}
bool Utils::readFile(const char *path,std::string &buf)
{
char tmp[4096];
FILE *f = fopen(path,"rb");
if (f) {
for(;;) {
long n = (long)fread(tmp,1,sizeof(tmp),f);
if (n > 0)
buf.append(tmp,n);
else break;
}
fclose(f);
return true;
}
return false;
}
bool Utils::writeFile(const char *path,const void *buf,unsigned int len)
{
FILE *f = fopen(path,"wb");
if (f) {
if ((long)fwrite(buf,1,len,f) != (long)len) {
fclose(f);
return false;
} else {
fclose(f);
return true;
}
}
return false;
}
std::vector<std::string> Utils::split(const char *s,const char *const sep,const char *esc,const char *quot)
{
std::vector<std::string> fields;

View File

@ -41,15 +41,6 @@
#include "Constants.hpp"
#ifdef __WINDOWS__
#include <WinSock2.h>
#include <Windows.h>
#else
#include <unistd.h>
#include <sys/time.h>
#include <arpa/inet.h>
#endif
namespace ZeroTier {
/**
@ -58,21 +49,6 @@ namespace ZeroTier {
class Utils
{
public:
#ifdef __UNIX_LIKE__
/**
* Close STDOUT_FILENO and STDERR_FILENO and replace them with output to given path
*
* This can be called after fork() and prior to exec() to suppress output
* from a subprocess, such as auto-update.
*
* @param stdoutPath Path to file to use for stdout
* @param stderrPath Path to file to use for stderr, or NULL for same as stdout (default)
* @return True on success
*/
static bool redirectUnixOutputs(const char *stdoutPath,const char *stderrPath = (const char *)0)
throw();
#endif // __UNIX_LIKE__
/**
* Perform a time-invariant binary comparison
*
@ -106,36 +82,6 @@ public:
static void burn(void *ptr,unsigned int len)
throw();
/**
* Delete a file
*
* @param path Path to delete
* @return True if delete was successful
*/
static inline bool rm(const char *path)
throw()
{
#ifdef __WINDOWS__
return (DeleteFileA(path) != FALSE);
#else
return (unlink(path) == 0);
#endif
}
static inline bool rm(const std::string &path) throw() { return rm(path.c_str()); }
/**
* List a directory's contents
*
* Keys in returned map are filenames only and don't include the leading
* path. Pseudo-paths like . and .. are not returned. Values are true if
* the item is a directory, false if it's a file. More detailed attributes
* aren't supported since the code that uses this doesn't need them.
*
* @param path Path to list
* @return Map of entries and whether or not they are also directories (empty on failure)
*/
static std::map<std::string,bool> listDirectory(const char *path);
/**
* Convert binary data to hexadecimal
*
@ -185,119 +131,6 @@ public:
*/
static void getSecureRandom(void *buf,unsigned int bytes);
/**
* Set modes on a file to something secure
*
* This locks a file so that only the owner can access it. What it actually
* does varies by platform.
*
* @param path Path to lock
* @param isDir True if this is a directory
*/
static void lockDownFile(const char *path,bool isDir);
/**
* Get file last modification time
*
* Resolution is often only second, not millisecond, but the return is
* always in ms for comparison against now().
*
* @param path Path to file to get time
* @return Last modification time in ms since epoch or 0 if not found
*/
static uint64_t getLastModified(const char *path);
/**
* @param path Path to check
* @param followLinks Follow links (on platforms with that concept)
* @return True if file or directory exists at path location
*/
static bool fileExists(const char *path,bool followLinks = true);
/**
* @param path Path to file
* @return File size or -1 if nonexistent or other failure
*/
static int64_t getFileSize(const char *path);
/**
* @return Current time in milliseconds since epoch
*/
static inline uint64_t now()
throw()
{
#ifdef __WINDOWS__
FILETIME ft;
SYSTEMTIME st;
ULARGE_INTEGER tmp;
GetSystemTime(&st);
SystemTimeToFileTime(&st,&ft);
tmp.LowPart = ft.dwLowDateTime;
tmp.HighPart = ft.dwHighDateTime;
return ( ((tmp.QuadPart - 116444736000000000ULL) / 10000L) + st.wMilliseconds );
#else
struct timeval tv;
gettimeofday(&tv,(struct timezone *)0);
return ( (1000ULL * (uint64_t)tv.tv_sec) + (uint64_t)(tv.tv_usec / 1000) );
#endif
};
/**
* @return Current time in seconds since epoch, to the highest available resolution
*/
static inline double nowf()
throw()
{
#ifdef __WINDOWS__
FILETIME ft;
SYSTEMTIME st;
ULARGE_INTEGER tmp;
GetSystemTime(&st);
SystemTimeToFileTime(&st,&ft);
tmp.LowPart = ft.dwLowDateTime;
tmp.HighPart = ft.dwHighDateTime;
return (((double)(tmp.QuadPart - 116444736000000000ULL)) / 10000000.0);
#else
struct timeval tv;
gettimeofday(&tv,(struct timezone *)0);
return ( ((double)tv.tv_sec) + (((double)tv.tv_usec) / 1000000.0) );
#endif
}
/**
* Read the full contents of a file into a string buffer
*
* The buffer isn't cleared, so if it already contains data the file's data will
* be appended.
*
* @param path Path of file to read
* @param buf Buffer to fill
* @return True if open and read successful
*/
static bool readFile(const char *path,std::string &buf);
/**
* Write a block of data to disk, replacing any current file contents
*
* @param path Path to write
* @param buf Buffer containing data
* @param len Length of buffer
* @return True if entire file was successfully written
*/
static bool writeFile(const char *path,const void *buf,unsigned int len);
/**
* Write a block of data to disk, replacing any current file contents
*
* @param path Path to write
* @param s Data to write
* @return True if entire file was successfully written
*/
static inline bool writeFile(const char *path,const std::string &s)
{
return writeFile(path,s.data(),(unsigned int)s.length());
}
/**
* Split a string by delimiter, with optional escape and quote characters
*
@ -487,68 +320,6 @@ public:
return true;
}
/**
* Compute SDBM hash of a binary string
*
* See: http://www.cse.yorku.ca/~oz/hash.html
*
* @param s Data to hash
* @param l Length in bytes
* @param h Previous hash value (use 0 initially)
* @tparam H Hash integer type -- should be unsigned
* @return New hash value
*/
template<typename H>
static inline H sdbmHash(const void *s,unsigned int l,H h)
throw()
{
for(unsigned int i=0;i<l;++i)
h = ((H)(((const unsigned char *)s)[i])) + (h << 6) + (h << 16) - h;
return h;
}
/**
* Compute SDBM hash of a 0-terminated C string
*
* See: http://www.cse.yorku.ca/~oz/hash.html
*
* @param s C-string to hash
* @param h Previous hash value (use 0 initially)
* @tparam H Hash integer type -- should be unsigned
* @return New hash value
*/
template<typename H>
static inline H sdbmHash(const char *s,H h)
throw()
{
char c;
while ((c = *(s++)))
h = ((H)c) + (h << 6) + (h << 16) - h;
return h;
}
/**
* Compute SDBM hash of an integer's bytes in little-endian byte order
*
* See: http://www.cse.yorku.ca/~oz/hash.html
*
* @param n Integer to hash in LE byte order
* @param h Previous hash value (use 0 initially)
* @tparam I Integer type -- should be unsigned
* @tparam H Hash integer type -- should be unsigned
* @return New hash value
*/
template<typename I,typename H>
static inline H sdbmHash(I n,H h)
throw()
{
for(unsigned int i=0;i<(unsigned int)sizeof(n);++i) {
h = ((H)(n & 0xff)) + (h << 6) + (h << 16) - h;
n >>= 8;
}
return h;
}
// Byte swappers for big/little endian conversion
static inline uint8_t hton(uint8_t n) throw() { return n; }
static inline int8_t hton(int8_t n) throw() { return n; }