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/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2015 ZeroTier, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*
* ZeroTier may be used and distributed under the terms of the GPLv3, which
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
*
* If you would like to embed ZeroTier into a commercial application or
* redistribute it in a modified binary form, please contact ZeroTier Networks
* LLC. Start here: http://www.zerotier.com/
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <sys/stat.h>
#include "../node/Constants.hpp"
#ifdef __UNIX_LIKE__
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/uio.h>
#include <dirent.h>
#include <netdb.h>
#endif
#ifdef __WINDOWS__
#include <wincrypt.h>
#endif
#include "OSUtils.hpp"
namespace ZeroTier {
#ifdef __UNIX_LIKE__
bool OSUtils::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__
std::vector<std::string> OSUtils::listDirectory(const char *path)
{
std::vector<std::string> 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,".."))&&((ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == 0))
r.push_back(std::string(ffd.cFileName));
} 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,".."))&&(dptr->d_type != DT_DIR))
r.push_back(std::string(dptr->d_name));
} else break;
}
closedir(d);
#endif
return r;
}
void OSUtils::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 OSUtils::getLastModified(const char *path)
{
struct stat s;
if (stat(path,&s))
return 0;
return (((uint64_t)s.st_mtime) * 1000ULL);
}
bool OSUtils::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 OSUtils::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;
}
std::vector<InetAddress> OSUtils::resolve(const char *name)
{
std::vector<InetAddress> r;
std::vector<InetAddress>::iterator i;
InetAddress tmp;
struct addrinfo *ai = (struct addrinfo *)0,*p;
if (!getaddrinfo(name,(const char *)0,(const struct addrinfo *)0,&ai)) {
try {
p = ai;
while (p) {
if ((p->ai_addr)&&((p->ai_addr->sa_family == AF_INET)||(p->ai_addr->sa_family == AF_INET6))) {
tmp = *(p->ai_addr);
for(i=r.begin();i!=r.end();++i) {
if (i->ipsEqual(tmp))
goto skip_add_inetaddr;
}
r.push_back(tmp);
}
skip_add_inetaddr:
p = p->ai_next;
}
} catch ( ... ) {}
freeaddrinfo(ai);
}
std::sort(r.begin(),r.end());
return r;
}
bool OSUtils::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 OSUtils::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;
}
// Used to convert HTTP header names to ASCII lower case
const unsigned char OSUtils::TOLOWER_TABLE[256] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, ' ', '!', '"', '#', '$', '%', '&', 0x27, '(', ')', '*', '+', ',', '-', '.', '/', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?', '@', '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', '{', '|', '}', '~', 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff };
} // namespace ZeroTier
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