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/*
* Copyright 2012, 2014 Andrew Ayer
*
* This file is part of git-crypt.
*
* git-crypt 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.
*
* git-crypt 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 git-crypt. If not, see <http://www.gnu.org/licenses/>.
*
* Additional permission under GNU GPL version 3 section 7:
*
* If you modify the Program, or any covered work, by linking or
* combining it with the OpenSSL project's OpenSSL library (or a
* modified version of that library), containing parts covered by the
* terms of the OpenSSL or SSLeay licenses, the licensors of the Program
* grant you additional permission to convey the resulting work.
* Corresponding Source for a non-source form of such a combination
* shall include the source code for the parts of OpenSSL used as well
* as that of the covered work.
*/
#ifndef GIT_CRYPT_UTIL_HPP
#define GIT_CRYPT_UTIL_HPP
#include <string>
#include <ios>
#include <iosfwd>
#include <stdint.h>
#include <sys/types.h>
#include <fstream>
#include <vector>
struct System_error {
std::string action;
std::string target;
int error;
System_error (const std::string& a, const std::string& t, int e) : action(a), target(t), error(e) { }
std::string message () const;
};
class temp_fstream : public std::fstream {
std::string filename;
public:
~temp_fstream () { close(); }
void open (std::ios_base::openmode);
void close ();
};
void mkdir_parent (const std::string& path); // Create parent directories of path, __but not path itself__
std::string our_exe_path ();
int exec_command (const std::vector<std::string>&);
int exec_command (const std::vector<std::string>&, std::ostream& output);
int exec_command_with_input (const std::vector<std::string>&, const char* p, size_t len);
int exit_status (int wait_status); // returns -1 if process did not exit (but was signaled, etc.)
inline bool successful_exit (int wait_status) { return exit_status(wait_status) == 0; }
void touch_file (const std::string&); // ignores non-existent files
void remove_file (const std::string&); // ignores non-existent files
std::string escape_shell_arg (const std::string&);
uint32_t load_be32 (const unsigned char*);
void store_be32 (unsigned char*, uint32_t);
bool read_be32 (std::istream& in, uint32_t&);
void write_be32 (std::ostream& out, uint32_t);
void* explicit_memset (void* s, int c, size_t n); // memset that won't be optimized away
bool leakless_equals (const void* a, const void* b, size_t len); // compare bytes w/o leaking timing
void init_std_streams ();
void create_protected_file (const char* path); // create empty file accessible only by current user
int util_rename (const char*, const char*);
std::vector<std::string> get_directory_contents (const char* path);
#endif
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