Thu, 28 Mar 2019 11:54:27 +0100
adds wrapper functions for setting/getting the content hash
/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 2018 Olaf Wintermann. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef TAR_H #define TAR_H #include <stdio.h> #include <stdlib.h> #include <time.h> #include <inttypes.h> #ifdef __cplusplus extern "C" { #endif #define T_ISUID 04000 #define T_ISGID 02000 #define T_IRUSR 00400 #define T_IWUSR 00200 #define T_IXUSR 00100 #define T_IRGRP 00040 #define T_IWGRP 00020 #define T_IXGRP 00010 #define T_IROTH 00004 #define T_IWOTH 00002 #define T_IXOTH 00001 #define TAR_TYPE_FILE '0' #define TAR_TYPE_DIRECTORY '5' enum TarError { TAR_OK = 0, TAR_PATH_TOO_LONG, TAR_FILE_TOO_LARGE, TAR_CONTENT_TOO_LARGE, TAR_UNFINISHED_FILE, TAR_CONTENT_BROKEN, TAR_ERROR }; typedef enum TarError TarError; typedef struct TarHeader { char name[100]; char mode[8]; char uid[8]; char gid[8]; char size[12]; char mtime[12]; char chksum[8]; char typeflag; char linkname[100]; char magic[6]; char version[2]; char uname[32]; char gname[32]; char devmajor[8]; char devminor[8]; char prefix[155]; char padding[12]; } TarHeader; typedef struct TarOutputStream { FILE *file; uint64_t cur_filesize; uint64_t cur_written; TarError error; } TarOutputStream; typedef struct TarEntry { char *path; uint64_t size; int type; } TarEntry; typedef struct TarInputStream { FILE *file; TarEntry cur_entry; uint64_t cur_read; TarError error; } TarInputStream; const char* tar_error2str(TarError error); TarOutputStream* tar_open(FILE *f); int tar_add_dir(TarOutputStream *tar, char *path, uint32_t mode, time_t mtime); int tar_begin_file( TarOutputStream *tar, char *path, uint32_t mode, uint64_t size, time_t mtime); size_t tar_fwrite(const void *ptr, size_t s, size_t n, TarOutputStream *stream); int tar_end_file(TarOutputStream *tar); int tar_close(TarOutputStream *tar); TarInputStream* tar_inputstream_open(FILE *f); TarEntry* tar_read_entry(TarInputStream *tar); size_t tar_fread(void *ptr, size_t s, size_t n, TarInputStream *stream); int tar_seek(TarInputStream *stream, long offset, int whence); int tar_inputstream_close(TarInputStream *tar); #ifdef __cplusplus } #endif #endif /* TAR_H */