1/* 2 * Copyright (c) 2005-2007 Rob Braun 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of Rob Braun nor the names of his contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 21 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 */ 29/* 30 * 03-Apr-2005 31 * DRI: Rob Braun <bbraun@synack.net> 32 */ 33/* 34 * Portions Copyright 2006, Apple Computer, Inc. 35 * Christopher Ryan <ryanc@apple.com> 36 */ 37 38 39#ifndef _XAR_ARCHIVE_H_ 40#define _XAR_ARCHIVE_H_ 41#include <zlib.h> 42#include <libxml/hash.h> 43#ifdef __APPLE__ 44#include <CommonCrypto/CommonDigest.h> 45#include <CommonCrypto/CommonDigestSPI.h> 46#else 47#include <openssl/evp.h> 48#endif 49#include <sys/types.h> 50#include <sys/stat.h> 51#include "xar.h" 52#include "filetree.h" 53#include "hash.h" 54 55typedef int (*read_callback)(xar_t, xar_file_t, void *, size_t, void *context); 56typedef int (*write_callback)(xar_t, xar_file_t, void *, size_t, void *context); 57 58struct errctx { 59 const char *str; 60 int saved_errno; 61 xar_file_t file; 62 void *usrctx; 63 xar_t x; 64}; 65 66struct __xar_t { 67 xar_prop_t props; 68 xar_attr_t attrs; /* archive options, such as rsize */ 69 const char *prefix; 70 const char *ns; 71 const char *filler1; 72 const char *filler2; 73 xar_file_t files; /* file forest */ 74 const char *filename; /* name of the archive we are operating on */ 75 char *dirname; /* directory of the archive, used in creation */ 76 int fd; /* open file descriptor for the archive */ 77 int heap_fd; /* fd for tmp heap archive, used in creation */ 78 off_t heap_offset; /* current offset within the heap */ 79 off_t heap_len; /* current length of the heap */ 80 xar_header_t header; /* header of the xar archive */ 81 void *readbuf; /* buffer for reading/writing compressed toc */ 82 size_t readbuf_len; /* length of readbuf */ 83 size_t offset; /* offset into readbuf for keeping track 84 * between callbacks. */ 85 size_t toc_count; /* current bytes read of the toc */ 86 z_stream zs; /* gz state for compressing/decompressing toc */ 87 char *path_prefix; /* used for distinguishing absolute paths */ 88 err_handler ercallback; /* callback for errors/warnings */ 89 struct errctx errctx; /* error callback context */ 90 xar_subdoc_t subdocs; /* linked list of subdocs */ 91 xar_signature_t signatures; /* linked list of signatures */ 92 int32_t (*attrcopy_to_heap)(xar_t, xar_file_t, xar_prop_t, read_callback, void *); 93 int32_t (*attrcopy_from_heap)(xar_t, xar_file_t, xar_prop_t, write_callback, void *); 94 int32_t (*heap_to_archive)(xar_t); 95 uint64_t last_fileid; /* unique fileid's in the archive */ 96 xmlHashTablePtr ino_hash; /* Hash for looking up hardlinked files (add)*/ 97 xmlHashTablePtr link_hash; /* Hash for looking up hardlinked files (extract)*/ 98 xmlHashTablePtr csum_hash; /* Hash for looking up checksums of files */ 99 xar_hash_t toc_hash_ctx; 100 int skipwarn; 101 struct stat sbcache; 102}; 103 104#define XAR(x) ((struct __xar_t *)(x)) 105 106#endif /* _XAR_ARCHIVE_H_ */ 107