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2045 lines
60 KiB
2045 lines
60 KiB
/*-
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* Copyright (c) 2003-2007 Tim Kientzle
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* Copyright (c) 2010-2012 Michihiro NAKAJIMA
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* Copyright (c) 2016 Martin Matuska
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "archive_platform.h"
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__FBSDID("$FreeBSD: head/lib/libarchive/archive_write_set_format_pax.c 201162 2009-12-29 05:47:46Z kientzle $");
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#ifdef HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#include "archive.h"
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#include "archive_entry.h"
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#include "archive_entry_locale.h"
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#include "archive_private.h"
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#include "archive_write_private.h"
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#include "archive_write_set_format_private.h"
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struct sparse_block {
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struct sparse_block *next;
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int is_hole;
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uint64_t offset;
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uint64_t remaining;
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};
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struct pax {
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uint64_t entry_bytes_remaining;
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uint64_t entry_padding;
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struct archive_string l_url_encoded_name;
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struct archive_string pax_header;
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struct archive_string sparse_map;
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size_t sparse_map_padding;
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struct sparse_block *sparse_list;
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struct sparse_block *sparse_tail;
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struct archive_string_conv *sconv_utf8;
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int opt_binary;
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unsigned flags;
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#define WRITE_SCHILY_XATTR (1 << 0)
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#define WRITE_LIBARCHIVE_XATTR (1 << 1)
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};
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static void add_pax_attr(struct archive_string *, const char *key,
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const char *value);
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static void add_pax_attr_binary(struct archive_string *,
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const char *key,
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const char *value, size_t value_len);
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static void add_pax_attr_int(struct archive_string *,
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const char *key, int64_t value);
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static void add_pax_attr_time(struct archive_string *,
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const char *key, int64_t sec,
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unsigned long nanos);
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static int add_pax_acl(struct archive_write *,
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struct archive_entry *, struct pax *, int);
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static ssize_t archive_write_pax_data(struct archive_write *,
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const void *, size_t);
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static int archive_write_pax_close(struct archive_write *);
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static int archive_write_pax_free(struct archive_write *);
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static int archive_write_pax_finish_entry(struct archive_write *);
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static int archive_write_pax_header(struct archive_write *,
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struct archive_entry *);
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static int archive_write_pax_options(struct archive_write *,
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const char *, const char *);
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static char *base64_encode(const char *src, size_t len);
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static char *build_gnu_sparse_name(char *dest, const char *src);
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static char *build_pax_attribute_name(char *dest, const char *src);
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static char *build_ustar_entry_name(char *dest, const char *src,
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size_t src_length, const char *insert);
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static char *format_int(char *dest, int64_t);
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static int has_non_ASCII(const char *);
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static void sparse_list_clear(struct pax *);
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static int sparse_list_add(struct pax *, int64_t, int64_t);
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static char *url_encode(const char *in);
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/*
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* Set output format to 'restricted pax' format.
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*
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* This is the same as normal 'pax', but tries to suppress
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* the pax header whenever possible. This is the default for
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* bsdtar, for instance.
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*/
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int
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archive_write_set_format_pax_restricted(struct archive *_a)
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{
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struct archive_write *a = (struct archive_write *)_a;
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int r;
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archive_check_magic(_a, ARCHIVE_WRITE_MAGIC,
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ARCHIVE_STATE_NEW, "archive_write_set_format_pax_restricted");
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r = archive_write_set_format_pax(&a->archive);
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a->archive.archive_format = ARCHIVE_FORMAT_TAR_PAX_RESTRICTED;
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a->archive.archive_format_name = "restricted POSIX pax interchange";
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return (r);
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}
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/*
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* Set output format to 'pax' format.
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*/
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int
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archive_write_set_format_pax(struct archive *_a)
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{
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struct archive_write *a = (struct archive_write *)_a;
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struct pax *pax;
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archive_check_magic(_a, ARCHIVE_WRITE_MAGIC,
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ARCHIVE_STATE_NEW, "archive_write_set_format_pax");
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if (a->format_free != NULL)
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(a->format_free)(a);
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pax = (struct pax *)calloc(1, sizeof(*pax));
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if (pax == NULL) {
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archive_set_error(&a->archive, ENOMEM,
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"Can't allocate pax data");
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return (ARCHIVE_FATAL);
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}
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pax->flags = WRITE_LIBARCHIVE_XATTR | WRITE_SCHILY_XATTR;
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a->format_data = pax;
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a->format_name = "pax";
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a->format_options = archive_write_pax_options;
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a->format_write_header = archive_write_pax_header;
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a->format_write_data = archive_write_pax_data;
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a->format_close = archive_write_pax_close;
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a->format_free = archive_write_pax_free;
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a->format_finish_entry = archive_write_pax_finish_entry;
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a->archive.archive_format = ARCHIVE_FORMAT_TAR_PAX_INTERCHANGE;
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a->archive.archive_format_name = "POSIX pax interchange";
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return (ARCHIVE_OK);
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}
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static int
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archive_write_pax_options(struct archive_write *a, const char *key,
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const char *val)
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{
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struct pax *pax = (struct pax *)a->format_data;
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int ret = ARCHIVE_FAILED;
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if (strcmp(key, "hdrcharset") == 0) {
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/*
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* The character-set we can use are defined in
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* IEEE Std 1003.1-2001
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*/
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if (val == NULL || val[0] == 0)
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archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
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"pax: hdrcharset option needs a character-set name");
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else if (strcmp(val, "BINARY") == 0 ||
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strcmp(val, "binary") == 0) {
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/*
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* Specify binary mode. We will not convert
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* filenames, uname and gname to any charsets.
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*/
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pax->opt_binary = 1;
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ret = ARCHIVE_OK;
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} else if (strcmp(val, "UTF-8") == 0) {
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/*
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* Specify UTF-8 character-set to be used for
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* filenames. This is almost the test that
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* running platform supports the string conversion.
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* Especially libarchive_test needs this trick for
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* its test.
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*/
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pax->sconv_utf8 = archive_string_conversion_to_charset(
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&(a->archive), "UTF-8", 0);
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if (pax->sconv_utf8 == NULL)
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ret = ARCHIVE_FATAL;
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else
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ret = ARCHIVE_OK;
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} else
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archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
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"pax: invalid charset name");
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return (ret);
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} else if (strcmp(key, "xattrheader") == 0) {
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if (val == NULL || val[0] == 0) {
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archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
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"pax: xattrheader requires a value");
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} else if (strcmp(val, "ALL") == 0 ||
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strcmp(val, "all") == 0) {
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pax->flags |= WRITE_LIBARCHIVE_XATTR | WRITE_SCHILY_XATTR;
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ret = ARCHIVE_OK;
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} else if (strcmp(val, "SCHILY") == 0 ||
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strcmp(val, "schily") == 0) {
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pax->flags |= WRITE_SCHILY_XATTR;
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pax->flags &= ~WRITE_LIBARCHIVE_XATTR;
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ret = ARCHIVE_OK;
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} else if (strcmp(val, "LIBARCHIVE") == 0 ||
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strcmp(val, "libarchive") == 0) {
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pax->flags |= WRITE_LIBARCHIVE_XATTR;
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pax->flags &= ~WRITE_SCHILY_XATTR;
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ret = ARCHIVE_OK;
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} else
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archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
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"pax: invalid xattr header name");
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return (ret);
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}
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/* Note: The "warn" return is just to inform the options
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* supervisor that we didn't handle it. It will generate
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* a suitable error if no one used this option. */
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return (ARCHIVE_WARN);
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}
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/*
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* Note: This code assumes that 'nanos' has the same sign as 'sec',
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* which implies that sec=-1, nanos=200000000 represents -1.2 seconds
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* and not -0.8 seconds. This is a pretty pedantic point, as we're
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* unlikely to encounter many real files created before Jan 1, 1970,
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* much less ones with timestamps recorded to sub-second resolution.
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*/
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static void
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add_pax_attr_time(struct archive_string *as, const char *key,
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int64_t sec, unsigned long nanos)
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{
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int digit, i;
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char *t;
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/*
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* Note that each byte contributes fewer than 3 base-10
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* digits, so this will always be big enough.
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*/
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char tmp[1 + 3*sizeof(sec) + 1 + 3*sizeof(nanos)];
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tmp[sizeof(tmp) - 1] = 0;
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t = tmp + sizeof(tmp) - 1;
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/* Skip trailing zeros in the fractional part. */
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for (digit = 0, i = 10; i > 0 && digit == 0; i--) {
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digit = nanos % 10;
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nanos /= 10;
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}
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/* Only format the fraction if it's non-zero. */
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if (i > 0) {
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while (i > 0) {
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*--t = "0123456789"[digit];
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digit = nanos % 10;
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nanos /= 10;
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i--;
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}
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*--t = '.';
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}
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t = format_int(t, sec);
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add_pax_attr(as, key, t);
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}
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static char *
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format_int(char *t, int64_t i)
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{
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uint64_t ui;
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if (i < 0)
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ui = (i == INT64_MIN) ? (uint64_t)(INT64_MAX) + 1 : (uint64_t)(-i);
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else
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ui = i;
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do {
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*--t = "0123456789"[ui % 10];
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} while (ui /= 10);
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if (i < 0)
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*--t = '-';
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return (t);
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}
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static void
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add_pax_attr_int(struct archive_string *as, const char *key, int64_t value)
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{
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char tmp[1 + 3 * sizeof(value)];
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tmp[sizeof(tmp) - 1] = 0;
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add_pax_attr(as, key, format_int(tmp + sizeof(tmp) - 1, value));
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}
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/*
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* Add a key/value attribute to the pax header. This function handles
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* the length field and various other syntactic requirements.
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*/
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static void
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add_pax_attr(struct archive_string *as, const char *key, const char *value)
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{
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add_pax_attr_binary(as, key, value, strlen(value));
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}
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/*
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* Add a key/value attribute to the pax header. This function handles
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* binary values.
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*/
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static void
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add_pax_attr_binary(struct archive_string *as, const char *key,
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const char *value, size_t value_len)
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{
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int digits, i, len, next_ten;
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char tmp[1 + 3 * sizeof(int)]; /* < 3 base-10 digits per byte */
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/*-
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* PAX attributes have the following layout:
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* <len> <space> <key> <=> <value> <nl>
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*/
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len = 1 + (int)strlen(key) + 1 + (int)value_len + 1;
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/*
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* The <len> field includes the length of the <len> field, so
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* computing the correct length is tricky. I start by
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* counting the number of base-10 digits in 'len' and
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* computing the next higher power of 10.
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*/
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next_ten = 1;
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digits = 0;
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i = len;
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while (i > 0) {
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i = i / 10;
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digits++;
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next_ten = next_ten * 10;
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}
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/*
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* For example, if string without the length field is 99
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* chars, then adding the 2 digit length "99" will force the
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* total length past 100, requiring an extra digit. The next
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* statement adjusts for this effect.
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*/
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if (len + digits >= next_ten)
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digits++;
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/* Now, we have the right length so we can build the line. */
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tmp[sizeof(tmp) - 1] = 0; /* Null-terminate the work area. */
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archive_strcat(as, format_int(tmp + sizeof(tmp) - 1, len + digits));
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archive_strappend_char(as, ' ');
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archive_strcat(as, key);
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archive_strappend_char(as, '=');
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archive_array_append(as, value, value_len);
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archive_strappend_char(as, '\n');
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}
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static void
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archive_write_pax_header_xattr(struct pax *pax, const char *encoded_name,
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const void *value, size_t value_len)
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{
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struct archive_string s;
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char *encoded_value;
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if (pax->flags & WRITE_LIBARCHIVE_XATTR) {
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encoded_value = base64_encode((const char *)value, value_len);
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if (encoded_name != NULL && encoded_value != NULL) {
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archive_string_init(&s);
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archive_strcpy(&s, "LIBARCHIVE.xattr.");
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archive_strcat(&s, encoded_name);
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add_pax_attr(&(pax->pax_header), s.s, encoded_value);
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archive_string_free(&s);
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}
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free(encoded_value);
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}
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if (pax->flags & WRITE_SCHILY_XATTR) {
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archive_string_init(&s);
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archive_strcpy(&s, "SCHILY.xattr.");
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archive_strcat(&s, encoded_name);
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add_pax_attr_binary(&(pax->pax_header), s.s, value, value_len);
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archive_string_free(&s);
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}
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}
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static int
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archive_write_pax_header_xattrs(struct archive_write *a,
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struct pax *pax, struct archive_entry *entry)
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{
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int i = archive_entry_xattr_reset(entry);
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while (i--) {
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const char *name;
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const void *value;
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char *url_encoded_name = NULL, *encoded_name = NULL;
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size_t size;
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int r;
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archive_entry_xattr_next(entry, &name, &value, &size);
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url_encoded_name = url_encode(name);
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if (url_encoded_name != NULL) {
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/* Convert narrow-character to UTF-8. */
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r = archive_strcpy_l(&(pax->l_url_encoded_name),
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url_encoded_name, pax->sconv_utf8);
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free(url_encoded_name); /* Done with this. */
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if (r == 0)
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encoded_name = pax->l_url_encoded_name.s;
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else if (errno == ENOMEM) {
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archive_set_error(&a->archive, ENOMEM,
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"Can't allocate memory for Linkname");
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return (ARCHIVE_FATAL);
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}
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}
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archive_write_pax_header_xattr(pax, encoded_name,
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value, size);
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}
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return (ARCHIVE_OK);
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}
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|
|
static int
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get_entry_hardlink(struct archive_write *a, struct archive_entry *entry,
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const char **name, size_t *length, struct archive_string_conv *sc)
|
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{
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int r;
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r = archive_entry_hardlink_l(entry, name, length, sc);
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if (r != 0) {
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if (errno == ENOMEM) {
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archive_set_error(&a->archive, ENOMEM,
|
|
"Can't allocate memory for Linkname");
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return (ARCHIVE_FATAL);
|
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}
|
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return (ARCHIVE_WARN);
|
|
}
|
|
return (ARCHIVE_OK);
|
|
}
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|
|
|
static int
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get_entry_pathname(struct archive_write *a, struct archive_entry *entry,
|
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const char **name, size_t *length, struct archive_string_conv *sc)
|
|
{
|
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int r;
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r = archive_entry_pathname_l(entry, name, length, sc);
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if (r != 0) {
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if (errno == ENOMEM) {
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archive_set_error(&a->archive, ENOMEM,
|
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"Can't allocate memory for Pathname");
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return (ARCHIVE_FATAL);
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}
|
|
return (ARCHIVE_WARN);
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}
|
|
return (ARCHIVE_OK);
|
|
}
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|
|
|
static int
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|
get_entry_uname(struct archive_write *a, struct archive_entry *entry,
|
|
const char **name, size_t *length, struct archive_string_conv *sc)
|
|
{
|
|
int r;
|
|
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r = archive_entry_uname_l(entry, name, length, sc);
|
|
if (r != 0) {
|
|
if (errno == ENOMEM) {
|
|
archive_set_error(&a->archive, ENOMEM,
|
|
"Can't allocate memory for Uname");
|
|
return (ARCHIVE_FATAL);
|
|
}
|
|
return (ARCHIVE_WARN);
|
|
}
|
|
return (ARCHIVE_OK);
|
|
}
|
|
|
|
static int
|
|
get_entry_gname(struct archive_write *a, struct archive_entry *entry,
|
|
const char **name, size_t *length, struct archive_string_conv *sc)
|
|
{
|
|
int r;
|
|
|
|
r = archive_entry_gname_l(entry, name, length, sc);
|
|
if (r != 0) {
|
|
if (errno == ENOMEM) {
|
|
archive_set_error(&a->archive, ENOMEM,
|
|
"Can't allocate memory for Gname");
|
|
return (ARCHIVE_FATAL);
|
|
}
|
|
return (ARCHIVE_WARN);
|
|
}
|
|
return (ARCHIVE_OK);
|
|
}
|
|
|
|
static int
|
|
get_entry_symlink(struct archive_write *a, struct archive_entry *entry,
|
|
const char **name, size_t *length, struct archive_string_conv *sc)
|
|
{
|
|
int r;
|
|
|
|
r = archive_entry_symlink_l(entry, name, length, sc);
|
|
if (r != 0) {
|
|
if (errno == ENOMEM) {
|
|
archive_set_error(&a->archive, ENOMEM,
|
|
"Can't allocate memory for Linkname");
|
|
return (ARCHIVE_FATAL);
|
|
}
|
|
return (ARCHIVE_WARN);
|
|
}
|
|
return (ARCHIVE_OK);
|
|
}
|
|
|
|
/* Add ACL to pax header */
|
|
static int
|
|
add_pax_acl(struct archive_write *a,
|
|
struct archive_entry *entry, struct pax *pax, int flags)
|
|
{
|
|
char *p;
|
|
const char *attr;
|
|
int acl_types;
|
|
|
|
acl_types = archive_entry_acl_types(entry);
|
|
|
|
if ((acl_types & ARCHIVE_ENTRY_ACL_TYPE_NFS4) != 0)
|
|
attr = "SCHILY.acl.ace";
|
|
else if ((flags & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0)
|
|
attr = "SCHILY.acl.access";
|
|
else if ((flags & ARCHIVE_ENTRY_ACL_TYPE_DEFAULT) != 0)
|
|
attr = "SCHILY.acl.default";
|
|
else
|
|
return (ARCHIVE_FATAL);
|
|
|
|
p = archive_entry_acl_to_text_l(entry, NULL, flags, pax->sconv_utf8);
|
|
if (p == NULL) {
|
|
if (errno == ENOMEM) {
|
|
archive_set_error(&a->archive, ENOMEM, "%s %s",
|
|
"Can't allocate memory for ", attr);
|
|
return (ARCHIVE_FATAL);
|
|
}
|
|
archive_set_error(&a->archive,
|
|
ARCHIVE_ERRNO_FILE_FORMAT, "%s %s %s",
|
|
"Can't translate ", attr, " to UTF-8");
|
|
return(ARCHIVE_WARN);
|
|
}
|
|
|
|
if (*p != '\0') {
|
|
add_pax_attr(&(pax->pax_header),
|
|
attr, p);
|
|
}
|
|
free(p);
|
|
return(ARCHIVE_OK);
|
|
}
|
|
|
|
/*
|
|
* TODO: Consider adding 'comment' and 'charset' fields to
|
|
* archive_entry so that clients can specify them. Also, consider
|
|
* adding generic key/value tags so clients can add arbitrary
|
|
* key/value data.
|
|
*
|
|
* TODO: Break up this 700-line function!!!! Yowza!
|
|
*/
|
|
static int
|
|
archive_write_pax_header(struct archive_write *a,
|
|
struct archive_entry *entry_original)
|
|
{
|
|
struct archive_entry *entry_main;
|
|
const char *p;
|
|
const char *suffix;
|
|
int need_extension, r, ret;
|
|
int acl_types;
|
|
int sparse_count;
|
|
uint64_t sparse_total, real_size;
|
|
struct pax *pax;
|
|
const char *hardlink;
|
|
const char *path = NULL, *linkpath = NULL;
|
|
const char *uname = NULL, *gname = NULL;
|
|
const void *mac_metadata;
|
|
size_t mac_metadata_size;
|
|
struct archive_string_conv *sconv;
|
|
size_t hardlink_length, path_length, linkpath_length;
|
|
size_t uname_length, gname_length;
|
|
|
|
char paxbuff[512];
|
|
char ustarbuff[512];
|
|
char ustar_entry_name[256];
|
|
char pax_entry_name[256];
|
|
char gnu_sparse_name[256];
|
|
struct archive_string entry_name;
|
|
|
|
ret = ARCHIVE_OK;
|
|
need_extension = 0;
|
|
pax = (struct pax *)a->format_data;
|
|
|
|
/* Sanity check. */
|
|
if (archive_entry_pathname(entry_original) == NULL) {
|
|
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
|
|
"Can't record entry in tar file without pathname");
|
|
return (ARCHIVE_FAILED);
|
|
}
|
|
|
|
/*
|
|
* Choose a header encoding.
|
|
*/
|
|
if (pax->opt_binary)
|
|
sconv = NULL;/* Binary mode. */
|
|
else {
|
|
/* Header encoding is UTF-8. */
|
|
if (pax->sconv_utf8 == NULL) {
|
|
/* Initialize the string conversion object
|
|
* we must need */
|
|
pax->sconv_utf8 = archive_string_conversion_to_charset(
|
|
&(a->archive), "UTF-8", 1);
|
|
if (pax->sconv_utf8 == NULL)
|
|
/* Couldn't allocate memory */
|
|
return (ARCHIVE_FAILED);
|
|
}
|
|
sconv = pax->sconv_utf8;
|
|
}
|
|
|
|
r = get_entry_hardlink(a, entry_original, &hardlink,
|
|
&hardlink_length, sconv);
|
|
if (r == ARCHIVE_FATAL)
|
|
return (r);
|
|
else if (r != ARCHIVE_OK) {
|
|
r = get_entry_hardlink(a, entry_original, &hardlink,
|
|
&hardlink_length, NULL);
|
|
if (r == ARCHIVE_FATAL)
|
|
return (r);
|
|
archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
|
|
"Can't translate linkname '%s' to %s", hardlink,
|
|
archive_string_conversion_charset_name(sconv));
|
|
ret = ARCHIVE_WARN;
|
|
sconv = NULL;/* The header charset switches to binary mode. */
|
|
}
|
|
|
|
/* Make sure this is a type of entry that we can handle here */
|
|
if (hardlink == NULL) {
|
|
switch (archive_entry_filetype(entry_original)) {
|
|
case AE_IFBLK:
|
|
case AE_IFCHR:
|
|
case AE_IFIFO:
|
|
case AE_IFLNK:
|
|
case AE_IFREG:
|
|
break;
|
|
case AE_IFDIR:
|
|
{
|
|
/*
|
|
* Ensure a trailing '/'. Modify the original
|
|
* entry so the client sees the change.
|
|
*/
|
|
#if defined(_WIN32) && !defined(__CYGWIN__)
|
|
const wchar_t *wp;
|
|
|
|
wp = archive_entry_pathname_w(entry_original);
|
|
if (wp != NULL && wp[wcslen(wp) -1] != L'/') {
|
|
struct archive_wstring ws;
|
|
|
|
archive_string_init(&ws);
|
|
path_length = wcslen(wp);
|
|
if (archive_wstring_ensure(&ws,
|
|
path_length + 2) == NULL) {
|
|
archive_set_error(&a->archive, ENOMEM,
|
|
"Can't allocate pax data");
|
|
archive_wstring_free(&ws);
|
|
return(ARCHIVE_FATAL);
|
|
}
|
|
/* Should we keep '\' ? */
|
|
if (wp[path_length -1] == L'\\')
|
|
path_length--;
|
|
archive_wstrncpy(&ws, wp, path_length);
|
|
archive_wstrappend_wchar(&ws, L'/');
|
|
archive_entry_copy_pathname_w(
|
|
entry_original, ws.s);
|
|
archive_wstring_free(&ws);
|
|
p = NULL;
|
|
} else
|
|
#endif
|
|
p = archive_entry_pathname(entry_original);
|
|
/*
|
|
* On Windows, this is a backup operation just in
|
|
* case getting WCS failed. On POSIX, this is a
|
|
* normal operation.
|
|
*/
|
|
if (p != NULL && p[0] != '\0' && p[strlen(p) - 1] != '/') {
|
|
struct archive_string as;
|
|
|
|
archive_string_init(&as);
|
|
path_length = strlen(p);
|
|
if (archive_string_ensure(&as,
|
|
path_length + 2) == NULL) {
|
|
archive_set_error(&a->archive, ENOMEM,
|
|
"Can't allocate pax data");
|
|
archive_string_free(&as);
|
|
return(ARCHIVE_FATAL);
|
|
}
|
|
#if defined(_WIN32) && !defined(__CYGWIN__)
|
|
/* NOTE: This might break the pathname
|
|
* if the current code page is CP932 and
|
|
* the pathname includes a character '\'
|
|
* as a part of its multibyte pathname. */
|
|
if (p[strlen(p) -1] == '\\')
|
|
path_length--;
|
|
else
|
|
#endif
|
|
archive_strncpy(&as, p, path_length);
|
|
archive_strappend_char(&as, '/');
|
|
archive_entry_copy_pathname(
|
|
entry_original, as.s);
|
|
archive_string_free(&as);
|
|
}
|
|
break;
|
|
}
|
|
default: /* AE_IFSOCK and unknown */
|
|
__archive_write_entry_filetype_unsupported(
|
|
&a->archive, entry_original, "pax");
|
|
return (ARCHIVE_FAILED);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If Mac OS metadata blob is here, recurse to write that
|
|
* as a separate entry. This is really a pretty poor design:
|
|
* In particular, it doubles the overhead for long filenames.
|
|
* TODO: Help Apple folks design something better and figure
|
|
* out how to transition from this legacy format.
|
|
*
|
|
* Note that this code is present on every platform; clients
|
|
* on non-Mac are unlikely to ever provide this data, but
|
|
* applications that copy entries from one archive to another
|
|
* should not lose data just because the local filesystem
|
|
* can't store it.
|
|
*/
|
|
mac_metadata =
|
|
archive_entry_mac_metadata(entry_original, &mac_metadata_size);
|
|
if (mac_metadata != NULL) {
|
|
const char *oname;
|
|
char *name, *bname;
|
|
size_t name_length;
|
|
struct archive_entry *extra = archive_entry_new2(&a->archive);
|
|
|
|
oname = archive_entry_pathname(entry_original);
|
|
name_length = strlen(oname);
|
|
name = malloc(name_length + 3);
|
|
if (name == NULL || extra == NULL) {
|
|
/* XXX error message */
|
|
archive_entry_free(extra);
|
|
free(name);
|
|
return (ARCHIVE_FAILED);
|
|
}
|
|
strcpy(name, oname);
|
|
/* Find last '/'; strip trailing '/' characters */
|
|
bname = strrchr(name, '/');
|
|
while (bname != NULL && bname[1] == '\0') {
|
|
*bname = '\0';
|
|
bname = strrchr(name, '/');
|
|
}
|
|
if (bname == NULL) {
|
|
memmove(name + 2, name, name_length + 1);
|
|
memmove(name, "._", 2);
|
|
} else {
|
|
bname += 1;
|
|
memmove(bname + 2, bname, strlen(bname) + 1);
|
|
memmove(bname, "._", 2);
|
|
}
|
|
archive_entry_copy_pathname(extra, name);
|
|
free(name);
|
|
|
|
archive_entry_set_size(extra, mac_metadata_size);
|
|
archive_entry_set_filetype(extra, AE_IFREG);
|
|
archive_entry_set_perm(extra,
|
|
archive_entry_perm(entry_original));
|
|
archive_entry_set_mtime(extra,
|
|
archive_entry_mtime(entry_original),
|
|
archive_entry_mtime_nsec(entry_original));
|
|
archive_entry_set_gid(extra,
|
|
archive_entry_gid(entry_original));
|
|
archive_entry_set_gname(extra,
|
|
archive_entry_gname(entry_original));
|
|
archive_entry_set_uid(extra,
|
|
archive_entry_uid(entry_original));
|
|
archive_entry_set_uname(extra,
|
|
archive_entry_uname(entry_original));
|
|
|
|
/* Recurse to write the special copyfile entry. */
|
|
r = archive_write_pax_header(a, extra);
|
|
archive_entry_free(extra);
|
|
if (r < ARCHIVE_WARN)
|
|
return (r);
|
|
if (r < ret)
|
|
ret = r;
|
|
r = (int)archive_write_pax_data(a, mac_metadata,
|
|
mac_metadata_size);
|
|
if (r < ARCHIVE_WARN)
|
|
return (r);
|
|
if (r < ret)
|
|
ret = r;
|
|
r = archive_write_pax_finish_entry(a);
|
|
if (r < ARCHIVE_WARN)
|
|
return (r);
|
|
if (r < ret)
|
|
ret = r;
|
|
}
|
|
|
|
/* Copy entry so we can modify it as needed. */
|
|
#if defined(_WIN32) && !defined(__CYGWIN__)
|
|
/* Make sure the path separators in pathname, hardlink and symlink
|
|
* are all slash '/', not the Windows path separator '\'. */
|
|
entry_main = __la_win_entry_in_posix_pathseparator(entry_original);
|
|
if (entry_main == entry_original)
|
|
entry_main = archive_entry_clone(entry_original);
|
|
#else
|
|
entry_main = archive_entry_clone(entry_original);
|
|
#endif
|
|
if (entry_main == NULL) {
|
|
archive_set_error(&a->archive, ENOMEM,
|
|
"Can't allocate pax data");
|
|
return(ARCHIVE_FATAL);
|
|
}
|
|
archive_string_empty(&(pax->pax_header)); /* Blank our work area. */
|
|
archive_string_empty(&(pax->sparse_map));
|
|
sparse_total = 0;
|
|
sparse_list_clear(pax);
|
|
|
|
if (hardlink == NULL &&
|
|
archive_entry_filetype(entry_main) == AE_IFREG)
|
|
sparse_count = archive_entry_sparse_reset(entry_main);
|
|
else
|
|
sparse_count = 0;
|
|
if (sparse_count) {
|
|
int64_t offset, length, last_offset = 0;
|
|
/* Get the last entry of sparse block. */
|
|
while (archive_entry_sparse_next(
|
|
entry_main, &offset, &length) == ARCHIVE_OK)
|
|
last_offset = offset + length;
|
|
|
|
/* If the last sparse block does not reach the end of file,
|
|
* We have to add a empty sparse block as the last entry to
|
|
* manage storing file data. */
|
|
if (last_offset < archive_entry_size(entry_main))
|
|
archive_entry_sparse_add_entry(entry_main,
|
|
archive_entry_size(entry_main), 0);
|
|
sparse_count = archive_entry_sparse_reset(entry_main);
|
|
}
|
|
|
|
/*
|
|
* First, check the name fields and see if any of them
|
|
* require binary coding. If any of them does, then all of
|
|
* them do.
|
|
*/
|
|
r = get_entry_pathname(a, entry_main, &path, &path_length, sconv);
|
|
if (r == ARCHIVE_FATAL) {
|
|
archive_entry_free(entry_main);
|
|
return (r);
|
|
} else if (r != ARCHIVE_OK) {
|
|
r = get_entry_pathname(a, entry_main, &path,
|
|
&path_length, NULL);
|
|
if (r == ARCHIVE_FATAL) {
|
|
archive_entry_free(entry_main);
|
|
return (r);
|
|
}
|
|
archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
|
|
"Can't translate pathname '%s' to %s", path,
|
|
archive_string_conversion_charset_name(sconv));
|
|
ret = ARCHIVE_WARN;
|
|
sconv = NULL;/* The header charset switches to binary mode. */
|
|
}
|
|
r = get_entry_uname(a, entry_main, &uname, &uname_length, sconv);
|
|
if (r == ARCHIVE_FATAL) {
|
|
archive_entry_free(entry_main);
|
|
return (r);
|
|
} else if (r != ARCHIVE_OK) {
|
|
r = get_entry_uname(a, entry_main, &uname, &uname_length, NULL);
|
|
if (r == ARCHIVE_FATAL) {
|
|
archive_entry_free(entry_main);
|
|
return (r);
|
|
}
|
|
archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
|
|
"Can't translate uname '%s' to %s", uname,
|
|
archive_string_conversion_charset_name(sconv));
|
|
ret = ARCHIVE_WARN;
|
|
sconv = NULL;/* The header charset switches to binary mode. */
|
|
}
|
|
r = get_entry_gname(a, entry_main, &gname, &gname_length, sconv);
|
|
if (r == ARCHIVE_FATAL) {
|
|
archive_entry_free(entry_main);
|
|
return (r);
|
|
} else if (r != ARCHIVE_OK) {
|
|
r = get_entry_gname(a, entry_main, &gname, &gname_length, NULL);
|
|
if (r == ARCHIVE_FATAL) {
|
|
archive_entry_free(entry_main);
|
|
return (r);
|
|
}
|
|
archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
|
|
"Can't translate gname '%s' to %s", gname,
|
|
archive_string_conversion_charset_name(sconv));
|
|
ret = ARCHIVE_WARN;
|
|
sconv = NULL;/* The header charset switches to binary mode. */
|
|
}
|
|
linkpath = hardlink;
|
|
linkpath_length = hardlink_length;
|
|
if (linkpath == NULL) {
|
|
r = get_entry_symlink(a, entry_main, &linkpath,
|
|
&linkpath_length, sconv);
|
|
if (r == ARCHIVE_FATAL) {
|
|
archive_entry_free(entry_main);
|
|
return (r);
|
|
} else if (r != ARCHIVE_OK) {
|
|
r = get_entry_symlink(a, entry_main, &linkpath,
|
|
&linkpath_length, NULL);
|
|
if (r == ARCHIVE_FATAL) {
|
|
archive_entry_free(entry_main);
|
|
return (r);
|
|
}
|
|
archive_set_error(&a->archive,
|
|
ARCHIVE_ERRNO_FILE_FORMAT,
|
|
"Can't translate linkname '%s' to %s", linkpath,
|
|
archive_string_conversion_charset_name(sconv));
|
|
ret = ARCHIVE_WARN;
|
|
sconv = NULL;
|
|
}
|
|
}
|
|
|
|
/* If any string conversions failed, get all attributes
|
|
* in binary-mode. */
|
|
if (sconv == NULL && !pax->opt_binary) {
|
|
if (hardlink != NULL) {
|
|
r = get_entry_hardlink(a, entry_main, &hardlink,
|
|
&hardlink_length, NULL);
|
|
if (r == ARCHIVE_FATAL) {
|
|
archive_entry_free(entry_main);
|
|
return (r);
|
|
}
|
|
linkpath = hardlink;
|
|
linkpath_length = hardlink_length;
|
|
}
|
|
r = get_entry_pathname(a, entry_main, &path,
|
|
&path_length, NULL);
|
|
if (r == ARCHIVE_FATAL) {
|
|
archive_entry_free(entry_main);
|
|
return (r);
|
|
}
|
|
r = get_entry_uname(a, entry_main, &uname, &uname_length, NULL);
|
|
if (r == ARCHIVE_FATAL) {
|
|
archive_entry_free(entry_main);
|
|
return (r);
|
|
}
|
|
r = get_entry_gname(a, entry_main, &gname, &gname_length, NULL);
|
|
if (r == ARCHIVE_FATAL) {
|
|
archive_entry_free(entry_main);
|
|
return (r);
|
|
}
|
|
}
|
|
|
|
/* Store the header encoding first, to be nice to readers. */
|
|
if (sconv == NULL)
|
|
add_pax_attr(&(pax->pax_header), "hdrcharset", "BINARY");
|
|
|
|
|
|
/*
|
|
* If name is too long, or has non-ASCII characters, add
|
|
* 'path' to pax extended attrs. (Note that an unconvertible
|
|
* name must have non-ASCII characters.)
|
|
*/
|
|
if (has_non_ASCII(path)) {
|
|
/* We have non-ASCII characters. */
|
|
add_pax_attr(&(pax->pax_header), "path", path);
|
|
archive_entry_set_pathname(entry_main,
|
|
build_ustar_entry_name(ustar_entry_name,
|
|
path, path_length, NULL));
|
|
need_extension = 1;
|
|
} else {
|
|
/* We have an all-ASCII path; we'd like to just store
|
|
* it in the ustar header if it will fit. Yes, this
|
|
* duplicates some of the logic in
|
|
* archive_write_set_format_ustar.c
|
|
*/
|
|
if (path_length <= 100) {
|
|
/* Fits in the old 100-char tar name field. */
|
|
} else {
|
|
/* Find largest suffix that will fit. */
|
|
/* Note: strlen() > 100, so strlen() - 100 - 1 >= 0 */
|
|
suffix = strchr(path + path_length - 100 - 1, '/');
|
|
/* Don't attempt an empty prefix. */
|
|
if (suffix == path)
|
|
suffix = strchr(suffix + 1, '/');
|
|
/* We can put it in the ustar header if it's
|
|
* all ASCII and it's either <= 100 characters
|
|
* or can be split at a '/' into a prefix <=
|
|
* 155 chars and a suffix <= 100 chars. (Note
|
|
* the strchr() above will return NULL exactly
|
|
* when the path can't be split.)
|
|
*/
|
|
if (suffix == NULL /* Suffix > 100 chars. */
|
|
|| suffix[1] == '\0' /* empty suffix */
|
|
|| suffix - path > 155) /* Prefix > 155 chars */
|
|
{
|
|
add_pax_attr(&(pax->pax_header), "path", path);
|
|
archive_entry_set_pathname(entry_main,
|
|
build_ustar_entry_name(ustar_entry_name,
|
|
path, path_length, NULL));
|
|
need_extension = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (linkpath != NULL) {
|
|
/* If link name is too long or has non-ASCII characters, add
|
|
* 'linkpath' to pax extended attrs. */
|
|
if (linkpath_length > 100 || has_non_ASCII(linkpath)) {
|
|
add_pax_attr(&(pax->pax_header), "linkpath", linkpath);
|
|
if (linkpath_length > 100) {
|
|
if (hardlink != NULL)
|
|
archive_entry_set_hardlink(entry_main,
|
|
"././@LongHardLink");
|
|
else
|
|
archive_entry_set_symlink(entry_main,
|
|
"././@LongSymLink");
|
|
}
|
|
need_extension = 1;
|
|
}
|
|
}
|
|
/* Save a pathname since it will be renamed if `entry_main` has
|
|
* sparse blocks. */
|
|
archive_string_init(&entry_name);
|
|
archive_strcpy(&entry_name, archive_entry_pathname(entry_main));
|
|
|
|
/* If file size is too large, add 'size' to pax extended attrs. */
|
|
if (archive_entry_size(entry_main) >= (((int64_t)1) << 33)) {
|
|
add_pax_attr_int(&(pax->pax_header), "size",
|
|
archive_entry_size(entry_main));
|
|
need_extension = 1;
|
|
}
|
|
|
|
/* If numeric GID is too large, add 'gid' to pax extended attrs. */
|
|
if ((unsigned int)archive_entry_gid(entry_main) >= (1 << 18)) {
|
|
add_pax_attr_int(&(pax->pax_header), "gid",
|
|
archive_entry_gid(entry_main));
|
|
need_extension = 1;
|
|
}
|
|
|
|
/* If group name is too large or has non-ASCII characters, add
|
|
* 'gname' to pax extended attrs. */
|
|
if (gname != NULL) {
|
|
if (gname_length > 31 || has_non_ASCII(gname)) {
|
|
add_pax_attr(&(pax->pax_header), "gname", gname);
|
|
need_extension = 1;
|
|
}
|
|
}
|
|
|
|
/* If numeric UID is too large, add 'uid' to pax extended attrs. */
|
|
if ((unsigned int)archive_entry_uid(entry_main) >= (1 << 18)) {
|
|
add_pax_attr_int(&(pax->pax_header), "uid",
|
|
archive_entry_uid(entry_main));
|
|
need_extension = 1;
|
|
}
|
|
|
|
/* Add 'uname' to pax extended attrs if necessary. */
|
|
if (uname != NULL) {
|
|
if (uname_length > 31 || has_non_ASCII(uname)) {
|
|
add_pax_attr(&(pax->pax_header), "uname", uname);
|
|
need_extension = 1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* POSIX/SUSv3 doesn't provide a standard key for large device
|
|
* numbers. I use the same keys here that Joerg Schilling
|
|
* used for 'star.' (Which, somewhat confusingly, are called
|
|
* "devXXX" even though they code "rdev" values.) No doubt,
|
|
* other implementations use other keys. Note that there's no
|
|
* reason we can't write the same information into a number of
|
|
* different keys.
|
|
*
|
|
* Of course, this is only needed for block or char device entries.
|
|
*/
|
|
if (archive_entry_filetype(entry_main) == AE_IFBLK
|
|
|| archive_entry_filetype(entry_main) == AE_IFCHR) {
|
|
/*
|
|
* If rdevmajor is too large, add 'SCHILY.devmajor' to
|
|
* extended attributes.
|
|
*/
|
|
int rdevmajor, rdevminor;
|
|
rdevmajor = archive_entry_rdevmajor(entry_main);
|
|
rdevminor = archive_entry_rdevminor(entry_main);
|
|
if (rdevmajor >= (1 << 18)) {
|
|
add_pax_attr_int(&(pax->pax_header), "SCHILY.devmajor",
|
|
rdevmajor);
|
|
/*
|
|
* Non-strict formatting below means we don't
|
|
* have to truncate here. Not truncating improves
|
|
* the chance that some more modern tar archivers
|
|
* (such as GNU tar 1.13) can restore the full
|
|
* value even if they don't understand the pax
|
|
* extended attributes. See my rant below about
|
|
* file size fields for additional details.
|
|
*/
|
|
/* archive_entry_set_rdevmajor(entry_main,
|
|
rdevmajor & ((1 << 18) - 1)); */
|
|
need_extension = 1;
|
|
}
|
|
|
|
/*
|
|
* If devminor is too large, add 'SCHILY.devminor' to
|
|
* extended attributes.
|
|
*/
|
|
if (rdevminor >= (1 << 18)) {
|
|
add_pax_attr_int(&(pax->pax_header), "SCHILY.devminor",
|
|
rdevminor);
|
|
/* Truncation is not necessary here, either. */
|
|
/* archive_entry_set_rdevminor(entry_main,
|
|
rdevminor & ((1 << 18) - 1)); */
|
|
need_extension = 1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Technically, the mtime field in the ustar header can
|
|
* support 33 bits, but many platforms use signed 32-bit time
|
|
* values. The cutoff of 0x7fffffff here is a compromise.
|
|
* Yes, this check is duplicated just below; this helps to
|
|
* avoid writing an mtime attribute just to handle a
|
|
* high-resolution timestamp in "restricted pax" mode.
|
|
*/
|
|
if (!need_extension &&
|
|
((archive_entry_mtime(entry_main) < 0)
|
|
|| (archive_entry_mtime(entry_main) >= 0x7fffffff)))
|
|
need_extension = 1;
|
|
|
|
/* I use a star-compatible file flag attribute. */
|
|
p = archive_entry_fflags_text(entry_main);
|
|
if (!need_extension && p != NULL && *p != '\0')
|
|
need_extension = 1;
|
|
|
|
/* If there are extended attributes, we need an extension */
|
|
if (!need_extension && archive_entry_xattr_count(entry_original) > 0)
|
|
need_extension = 1;
|
|
|
|
/* If there are sparse info, we need an extension */
|
|
if (!need_extension && sparse_count > 0)
|
|
need_extension = 1;
|
|
|
|
acl_types = archive_entry_acl_types(entry_original);
|
|
|
|
/* If there are any ACL entries, we need an extension */
|
|
if (!need_extension && acl_types != 0)
|
|
need_extension = 1;
|
|
|
|
/* If the symlink type is defined, we need an extension */
|
|
if (!need_extension && archive_entry_symlink_type(entry_main) > 0)
|
|
need_extension = 1;
|
|
|
|
/*
|
|
* Libarchive used to include these in extended headers for
|
|
* restricted pax format, but that confused people who
|
|
* expected ustar-like time semantics. So now we only include
|
|
* them in full pax format.
|
|
*/
|
|
if (a->archive.archive_format != ARCHIVE_FORMAT_TAR_PAX_RESTRICTED) {
|
|
if (archive_entry_ctime(entry_main) != 0 ||
|
|
archive_entry_ctime_nsec(entry_main) != 0)
|
|
add_pax_attr_time(&(pax->pax_header), "ctime",
|
|
archive_entry_ctime(entry_main),
|
|
archive_entry_ctime_nsec(entry_main));
|
|
|
|
if (archive_entry_atime(entry_main) != 0 ||
|
|
archive_entry_atime_nsec(entry_main) != 0)
|
|
add_pax_attr_time(&(pax->pax_header), "atime",
|
|
archive_entry_atime(entry_main),
|
|
archive_entry_atime_nsec(entry_main));
|
|
|
|
/* Store birth/creationtime only if it's earlier than mtime */
|
|
if (archive_entry_birthtime_is_set(entry_main) &&
|
|
archive_entry_birthtime(entry_main)
|
|
< archive_entry_mtime(entry_main))
|
|
add_pax_attr_time(&(pax->pax_header),
|
|
"LIBARCHIVE.creationtime",
|
|
archive_entry_birthtime(entry_main),
|
|
archive_entry_birthtime_nsec(entry_main));
|
|
}
|
|
|
|
/*
|
|
* The following items are handled differently in "pax
|
|
* restricted" format. In particular, in "pax restricted"
|
|
* format they won't be added unless need_extension is
|
|
* already set (we're already generating an extended header, so
|
|
* may as well include these).
|
|
*/
|
|
if (a->archive.archive_format != ARCHIVE_FORMAT_TAR_PAX_RESTRICTED ||
|
|
need_extension) {
|
|
if (archive_entry_mtime(entry_main) < 0 ||
|
|
archive_entry_mtime(entry_main) >= 0x7fffffff ||
|
|
archive_entry_mtime_nsec(entry_main) != 0)
|
|
add_pax_attr_time(&(pax->pax_header), "mtime",
|
|
archive_entry_mtime(entry_main),
|
|
archive_entry_mtime_nsec(entry_main));
|
|
|
|
/* I use a star-compatible file flag attribute. */
|
|
p = archive_entry_fflags_text(entry_main);
|
|
if (p != NULL && *p != '\0')
|
|
add_pax_attr(&(pax->pax_header), "SCHILY.fflags", p);
|
|
|
|
/* I use star-compatible ACL attributes. */
|
|
if ((acl_types & ARCHIVE_ENTRY_ACL_TYPE_NFS4) != 0) {
|
|
ret = add_pax_acl(a, entry_original, pax,
|
|
ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID |
|
|
ARCHIVE_ENTRY_ACL_STYLE_SEPARATOR_COMMA |
|
|
ARCHIVE_ENTRY_ACL_STYLE_COMPACT);
|
|
if (ret == ARCHIVE_FATAL) {
|
|
archive_entry_free(entry_main);
|
|
archive_string_free(&entry_name);
|
|
return (ARCHIVE_FATAL);
|
|
}
|
|
}
|
|
if (acl_types & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) {
|
|
ret = add_pax_acl(a, entry_original, pax,
|
|
ARCHIVE_ENTRY_ACL_TYPE_ACCESS |
|
|
ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID |
|
|
ARCHIVE_ENTRY_ACL_STYLE_SEPARATOR_COMMA);
|
|
if (ret == ARCHIVE_FATAL) {
|
|
archive_entry_free(entry_main);
|
|
archive_string_free(&entry_name);
|
|
return (ARCHIVE_FATAL);
|
|
}
|
|
}
|
|
if (acl_types & ARCHIVE_ENTRY_ACL_TYPE_DEFAULT) {
|
|
ret = add_pax_acl(a, entry_original, pax,
|
|
ARCHIVE_ENTRY_ACL_TYPE_DEFAULT |
|
|
ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID |
|
|
ARCHIVE_ENTRY_ACL_STYLE_SEPARATOR_COMMA);
|
|
if (ret == ARCHIVE_FATAL) {
|
|
archive_entry_free(entry_main);
|
|
archive_string_free(&entry_name);
|
|
return (ARCHIVE_FATAL);
|
|
}
|
|
}
|
|
|
|
/* We use GNU-tar-compatible sparse attributes. */
|
|
if (sparse_count > 0) {
|
|
int64_t soffset, slength;
|
|
|
|
add_pax_attr_int(&(pax->pax_header),
|
|
"GNU.sparse.major", 1);
|
|
add_pax_attr_int(&(pax->pax_header),
|
|
"GNU.sparse.minor", 0);
|
|
/*
|
|
* Make sure to store the original path, since
|
|
* truncation to ustar limit happened already.
|
|
*/
|
|
add_pax_attr(&(pax->pax_header),
|
|
"GNU.sparse.name", path);
|
|
add_pax_attr_int(&(pax->pax_header),
|
|
"GNU.sparse.realsize",
|
|
archive_entry_size(entry_main));
|
|
|
|
/* Rename the file name which will be used for
|
|
* ustar header to a special name, which GNU
|
|
* PAX Format 1.0 requires */
|
|
archive_entry_set_pathname(entry_main,
|
|
build_gnu_sparse_name(gnu_sparse_name,
|
|
entry_name.s));
|
|
|
|
/*
|
|
* - Make a sparse map, which will precede a file data.
|
|
* - Get the total size of available data of sparse.
|
|
*/
|
|
archive_string_sprintf(&(pax->sparse_map), "%d\n",
|
|
sparse_count);
|
|
while (archive_entry_sparse_next(entry_main,
|
|
&soffset, &slength) == ARCHIVE_OK) {
|
|
archive_string_sprintf(&(pax->sparse_map),
|
|
"%jd\n%jd\n",
|
|
(intmax_t)soffset,
|
|
(intmax_t)slength);
|
|
sparse_total += slength;
|
|
if (sparse_list_add(pax, soffset, slength)
|
|
!= ARCHIVE_OK) {
|
|
archive_set_error(&a->archive,
|
|
ENOMEM,
|
|
"Can't allocate memory");
|
|
archive_entry_free(entry_main);
|
|
archive_string_free(&entry_name);
|
|
return (ARCHIVE_FATAL);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Store extended attributes */
|
|
if (archive_write_pax_header_xattrs(a, pax, entry_original)
|
|
== ARCHIVE_FATAL) {
|
|
archive_entry_free(entry_main);
|
|
archive_string_free(&entry_name);
|
|
return (ARCHIVE_FATAL);
|
|
}
|
|
|
|
/* Store extended symlink information */
|
|
if (archive_entry_symlink_type(entry_main) ==
|
|
AE_SYMLINK_TYPE_FILE) {
|
|
add_pax_attr(&(pax->pax_header),
|
|
"LIBARCHIVE.symlinktype", "file");
|
|
} else if (archive_entry_symlink_type(entry_main) ==
|
|
AE_SYMLINK_TYPE_DIRECTORY) {
|
|
add_pax_attr(&(pax->pax_header),
|
|
"LIBARCHIVE.symlinktype", "dir");
|
|
}
|
|
}
|
|
|
|
/* Only regular files have data. */
|
|
if (archive_entry_filetype(entry_main) != AE_IFREG)
|
|
archive_entry_set_size(entry_main, 0);
|
|
|
|
/*
|
|
* Pax-restricted does not store data for hardlinks, in order
|
|
* to improve compatibility with ustar.
|
|
*/
|
|
if (a->archive.archive_format != ARCHIVE_FORMAT_TAR_PAX_INTERCHANGE &&
|
|
hardlink != NULL)
|
|
archive_entry_set_size(entry_main, 0);
|
|
|
|
/*
|
|
* XXX Full pax interchange format does permit a hardlink
|
|
* entry to have data associated with it. I'm not supporting
|
|
* that here because the client expects me to tell them whether
|
|
* or not this format expects data for hardlinks. If I
|
|
* don't check here, then every pax archive will end up with
|
|
* duplicated data for hardlinks. Someday, there may be
|
|
* need to select this behavior, in which case the following
|
|
* will need to be revisited. XXX
|
|
*/
|
|
if (hardlink != NULL)
|
|
archive_entry_set_size(entry_main, 0);
|
|
|
|
/* Save a real file size. */
|
|
real_size = archive_entry_size(entry_main);
|
|
/*
|
|
* Overwrite a file size by the total size of sparse blocks and
|
|
* the size of sparse map info. That file size is the length of
|
|
* the data, which we will exactly store into an archive file.
|
|
*/
|
|
if (archive_strlen(&(pax->sparse_map))) {
|
|
size_t mapsize = archive_strlen(&(pax->sparse_map));
|
|
pax->sparse_map_padding = 0x1ff & (-(ssize_t)mapsize);
|
|
archive_entry_set_size(entry_main,
|
|
mapsize + pax->sparse_map_padding + sparse_total);
|
|
}
|
|
|
|
/* Format 'ustar' header for main entry.
|
|
*
|
|
* The trouble with file size: If the reader can't understand
|
|
* the file size, they may not be able to locate the next
|
|
* entry and the rest of the archive is toast. Pax-compliant
|
|
* readers are supposed to ignore the file size in the main
|
|
* header, so the question becomes how to maximize portability
|
|
* for readers that don't support pax attribute extensions.
|
|
* For maximum compatibility, I permit numeric extensions in
|
|
* the main header so that the file size stored will always be
|
|
* correct, even if it's in a format that only some
|
|
* implementations understand. The technique used here is:
|
|
*
|
|
* a) If possible, follow the standard exactly. This handles
|
|
* files up to 8 gigabytes minus 1.
|
|
*
|
|
* b) If that fails, try octal but omit the field terminator.
|
|
* That handles files up to 64 gigabytes minus 1.
|
|
*
|
|
* c) Otherwise, use base-256 extensions. That handles files
|
|
* up to 2^63 in this implementation, with the potential to
|
|
* go up to 2^94. That should hold us for a while. ;-)
|
|
*
|
|
* The non-strict formatter uses similar logic for other
|
|
* numeric fields, though they're less critical.
|
|
*/
|
|
if (__archive_write_format_header_ustar(a, ustarbuff, entry_main, -1, 0,
|
|
NULL) == ARCHIVE_FATAL) {
|
|
archive_entry_free(entry_main);
|
|
archive_string_free(&entry_name);
|
|
return (ARCHIVE_FATAL);
|
|
}
|
|
|
|
/* If we built any extended attributes, write that entry first. */
|
|
if (archive_strlen(&(pax->pax_header)) > 0) {
|
|
struct archive_entry *pax_attr_entry;
|
|
time_t s;
|
|
int64_t uid, gid;
|
|
int mode;
|
|
|
|
pax_attr_entry = archive_entry_new2(&a->archive);
|
|
p = entry_name.s;
|
|
archive_entry_set_pathname(pax_attr_entry,
|
|
build_pax_attribute_name(pax_entry_name, p));
|
|
archive_entry_set_size(pax_attr_entry,
|
|
archive_strlen(&(pax->pax_header)));
|
|
/* Copy uid/gid (but clip to ustar limits). */
|
|
uid = archive_entry_uid(entry_main);
|
|
if (uid >= 1 << 18)
|
|
uid = (1 << 18) - 1;
|
|
archive_entry_set_uid(pax_attr_entry, uid);
|
|
gid = archive_entry_gid(entry_main);
|
|
if (gid >= 1 << 18)
|
|
gid = (1 << 18) - 1;
|
|
archive_entry_set_gid(pax_attr_entry, gid);
|
|
/* Copy mode over (but not setuid/setgid bits) */
|
|
mode = archive_entry_mode(entry_main);
|
|
#ifdef S_ISUID
|
|
mode &= ~S_ISUID;
|
|
#endif
|
|
#ifdef S_ISGID
|
|
mode &= ~S_ISGID;
|
|
#endif
|
|
#ifdef S_ISVTX
|
|
mode &= ~S_ISVTX;
|
|
#endif
|
|
archive_entry_set_mode(pax_attr_entry, mode);
|
|
|
|
/* Copy uname/gname. */
|
|
archive_entry_set_uname(pax_attr_entry,
|
|
archive_entry_uname(entry_main));
|
|
archive_entry_set_gname(pax_attr_entry,
|
|
archive_entry_gname(entry_main));
|
|
|
|
/* Copy mtime, but clip to ustar limits. */
|
|
s = archive_entry_mtime(entry_main);
|
|
if (s < 0) { s = 0; }
|
|
if (s >= 0x7fffffff) { s = 0x7fffffff; }
|
|
archive_entry_set_mtime(pax_attr_entry, s, 0);
|
|
|
|
/* Standard ustar doesn't support atime. */
|
|
archive_entry_set_atime(pax_attr_entry, 0, 0);
|
|
|
|
/* Standard ustar doesn't support ctime. */
|
|
archive_entry_set_ctime(pax_attr_entry, 0, 0);
|
|
|
|
r = __archive_write_format_header_ustar(a, paxbuff,
|
|
pax_attr_entry, 'x', 1, NULL);
|
|
|
|
archive_entry_free(pax_attr_entry);
|
|
|
|
/* Note that the 'x' header shouldn't ever fail to format */
|
|
if (r < ARCHIVE_WARN) {
|
|
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
|
|
"archive_write_pax_header: "
|
|
"'x' header failed?! This can't happen.\n");
|
|
archive_entry_free(entry_main);
|
|
archive_string_free(&entry_name);
|
|
return (ARCHIVE_FATAL);
|
|
} else if (r < ret)
|
|
ret = r;
|
|
r = __archive_write_output(a, paxbuff, 512);
|
|
if (r != ARCHIVE_OK) {
|
|
sparse_list_clear(pax);
|
|
pax->entry_bytes_remaining = 0;
|
|
pax->entry_padding = 0;
|
|
archive_entry_free(entry_main);
|
|
archive_string_free(&entry_name);
|
|
return (ARCHIVE_FATAL);
|
|
}
|
|
|
|
pax->entry_bytes_remaining = archive_strlen(&(pax->pax_header));
|
|
pax->entry_padding =
|
|
0x1ff & (-(int64_t)pax->entry_bytes_remaining);
|
|
|
|
r = __archive_write_output(a, pax->pax_header.s,
|
|
archive_strlen(&(pax->pax_header)));
|
|
if (r != ARCHIVE_OK) {
|
|
/* If a write fails, we're pretty much toast. */
|
|
archive_entry_free(entry_main);
|
|
archive_string_free(&entry_name);
|
|
return (ARCHIVE_FATAL);
|
|
}
|
|
/* Pad out the end of the entry. */
|
|
r = __archive_write_nulls(a, (size_t)pax->entry_padding);
|
|
if (r != ARCHIVE_OK) {
|
|
/* If a write fails, we're pretty much toast. */
|
|
archive_entry_free(entry_main);
|
|
archive_string_free(&entry_name);
|
|
return (ARCHIVE_FATAL);
|
|
}
|
|
pax->entry_bytes_remaining = pax->entry_padding = 0;
|
|
}
|
|
|
|
/* Write the header for main entry. */
|
|
r = __archive_write_output(a, ustarbuff, 512);
|
|
if (r != ARCHIVE_OK) {
|
|
archive_entry_free(entry_main);
|
|
archive_string_free(&entry_name);
|
|
return (r);
|
|
}
|
|
|
|
/*
|
|
* Inform the client of the on-disk size we're using, so
|
|
* they can avoid unnecessarily writing a body for something
|
|
* that we're just going to ignore.
|
|
*/
|
|
archive_entry_set_size(entry_original, real_size);
|
|
if (pax->sparse_list == NULL && real_size > 0) {
|
|
/* This is not a sparse file but we handle its data as
|
|
* a sparse block. */
|
|
sparse_list_add(pax, 0, real_size);
|
|
sparse_total = real_size;
|
|
}
|
|
pax->entry_padding = 0x1ff & (-(int64_t)sparse_total);
|
|
archive_entry_free(entry_main);
|
|
archive_string_free(&entry_name);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* We need a valid name for the regular 'ustar' entry. This routine
|
|
* tries to hack something more-or-less reasonable.
|
|
*
|
|
* The approach here tries to preserve leading dir names. We do so by
|
|
* working with four sections:
|
|
* 1) "prefix" directory names,
|
|
* 2) "suffix" directory names,
|
|
* 3) inserted dir name (optional),
|
|
* 4) filename.
|
|
*
|
|
* These sections must satisfy the following requirements:
|
|
* * Parts 1 & 2 together form an initial portion of the dir name.
|
|
* * Part 3 is specified by the caller. (It should not contain a leading
|
|
* or trailing '/'.)
|
|
* * Part 4 forms an initial portion of the base filename.
|
|
* * The filename must be <= 99 chars to fit the ustar 'name' field.
|
|
* * Parts 2, 3, 4 together must be <= 99 chars to fit the ustar 'name' fld.
|
|
* * Part 1 must be <= 155 chars to fit the ustar 'prefix' field.
|
|
* * If the original name ends in a '/', the new name must also end in a '/'
|
|
* * Trailing '/.' sequences may be stripped.
|
|
*
|
|
* Note: Recall that the ustar format does not store the '/' separating
|
|
* parts 1 & 2, but does store the '/' separating parts 2 & 3.
|
|
*/
|
|
static char *
|
|
build_ustar_entry_name(char *dest, const char *src, size_t src_length,
|
|
const char *insert)
|
|
{
|
|
const char *prefix, *prefix_end;
|
|
const char *suffix, *suffix_end;
|
|
const char *filename, *filename_end;
|
|
char *p;
|
|
int need_slash = 0; /* Was there a trailing slash? */
|
|
size_t suffix_length = 99;
|
|
size_t insert_length;
|
|
|
|
/* Length of additional dir element to be added. */
|
|
if (insert == NULL)
|
|
insert_length = 0;
|
|
else
|
|
/* +2 here allows for '/' before and after the insert. */
|
|
insert_length = strlen(insert) + 2;
|
|
|
|
/* Step 0: Quick bailout in a common case. */
|
|
if (src_length < 100 && insert == NULL) {
|
|
strncpy(dest, src, src_length);
|
|
dest[src_length] = '\0';
|
|
return (dest);
|
|
}
|
|
|
|
/* Step 1: Locate filename and enforce the length restriction. */
|
|
filename_end = src + src_length;
|
|
/* Remove trailing '/' chars and '/.' pairs. */
|
|
for (;;) {
|
|
if (filename_end > src && filename_end[-1] == '/') {
|
|
filename_end --;
|
|
need_slash = 1; /* Remember to restore trailing '/'. */
|
|
continue;
|
|
}
|
|
if (filename_end > src + 1 && filename_end[-1] == '.'
|
|
&& filename_end[-2] == '/') {
|
|
filename_end -= 2;
|
|
need_slash = 1; /* "foo/." will become "foo/" */
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
if (need_slash)
|
|
suffix_length--;
|
|
/* Find start of filename. */
|
|
filename = filename_end - 1;
|
|
while ((filename > src) && (*filename != '/'))
|
|
filename --;
|
|
if ((*filename == '/') && (filename < filename_end - 1))
|
|
filename ++;
|
|
/* Adjust filename_end so that filename + insert fits in 99 chars. */
|
|
suffix_length -= insert_length;
|
|
if (filename_end > filename + suffix_length)
|
|
filename_end = filename + suffix_length;
|
|
/* Calculate max size for "suffix" section (#3 above). */
|
|
suffix_length -= filename_end - filename;
|
|
|
|
/* Step 2: Locate the "prefix" section of the dirname, including
|
|
* trailing '/'. */
|
|
prefix = src;
|
|
prefix_end = prefix + 155;
|
|
if (prefix_end > filename)
|
|
prefix_end = filename;
|
|
while (prefix_end > prefix && *prefix_end != '/')
|
|
prefix_end--;
|
|
if ((prefix_end < filename) && (*prefix_end == '/'))
|
|
prefix_end++;
|
|
|
|
/* Step 3: Locate the "suffix" section of the dirname,
|
|
* including trailing '/'. */
|
|
suffix = prefix_end;
|
|
suffix_end = suffix + suffix_length; /* Enforce limit. */
|
|
if (suffix_end > filename)
|
|
suffix_end = filename;
|
|
if (suffix_end < suffix)
|
|
suffix_end = suffix;
|
|
while (suffix_end > suffix && *suffix_end != '/')
|
|
suffix_end--;
|
|
if ((suffix_end < filename) && (*suffix_end == '/'))
|
|
suffix_end++;
|
|
|
|
/* Step 4: Build the new name. */
|
|
/* The OpenBSD strlcpy function is safer, but less portable. */
|
|
/* Rather than maintain two versions, just use the strncpy version. */
|
|
p = dest;
|
|
if (prefix_end > prefix) {
|
|
strncpy(p, prefix, prefix_end - prefix);
|
|
p += prefix_end - prefix;
|
|
}
|
|
if (suffix_end > suffix) {
|
|
strncpy(p, suffix, suffix_end - suffix);
|
|
p += suffix_end - suffix;
|
|
}
|
|
if (insert != NULL) {
|
|
/* Note: assume insert does not have leading or trailing '/' */
|
|
strcpy(p, insert);
|
|
p += strlen(insert);
|
|
*p++ = '/';
|
|
}
|
|
strncpy(p, filename, filename_end - filename);
|
|
p += filename_end - filename;
|
|
if (need_slash)
|
|
*p++ = '/';
|
|
*p = '\0';
|
|
|
|
return (dest);
|
|
}
|
|
|
|
/*
|
|
* The ustar header for the pax extended attributes must have a
|
|
* reasonable name: SUSv3 requires 'dirname'/PaxHeader.'pid'/'filename'
|
|
* where 'pid' is the PID of the archiving process. Unfortunately,
|
|
* that makes testing a pain since the output varies for each run,
|
|
* so I'm sticking with the simpler 'dirname'/PaxHeader/'filename'
|
|
* for now. (Someday, I'll make this settable. Then I can use the
|
|
* SUS recommendation as default and test harnesses can override it
|
|
* to get predictable results.)
|
|
*
|
|
* Joerg Schilling has argued that this is unnecessary because, in
|
|
* practice, if the pax extended attributes get extracted as regular
|
|
* files, no one is going to bother reading those attributes to
|
|
* manually restore them. Based on this, 'star' uses
|
|
* /tmp/PaxHeader/'basename' as the ustar header name. This is a
|
|
* tempting argument, in part because it's simpler than the SUSv3
|
|
* recommendation, but I'm not entirely convinced. I'm also
|
|
* uncomfortable with the fact that "/tmp" is a Unix-ism.
|
|
*
|
|
* The following routine leverages build_ustar_entry_name() above and
|
|
* so is simpler than you might think. It just needs to provide the
|
|
* additional path element and handle a few pathological cases).
|
|
*/
|
|
static char *
|
|
build_pax_attribute_name(char *dest, const char *src)
|
|
{
|
|
char buff[64];
|
|
const char *p;
|
|
|
|
/* Handle the null filename case. */
|
|
if (src == NULL || *src == '\0') {
|
|
strcpy(dest, "PaxHeader/blank");
|
|
return (dest);
|
|
}
|
|
|
|
/* Prune final '/' and other unwanted final elements. */
|
|
p = src + strlen(src);
|
|
for (;;) {
|
|
/* Ends in "/", remove the '/' */
|
|
if (p > src && p[-1] == '/') {
|
|
--p;
|
|
continue;
|
|
}
|
|
/* Ends in "/.", remove the '.' */
|
|
if (p > src + 1 && p[-1] == '.'
|
|
&& p[-2] == '/') {
|
|
--p;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* Pathological case: After above, there was nothing left.
|
|
* This includes "/." "/./." "/.//./." etc. */
|
|
if (p == src) {
|
|
strcpy(dest, "/PaxHeader/rootdir");
|
|
return (dest);
|
|
}
|
|
|
|
/* Convert unadorned "." into a suitable filename. */
|
|
if (*src == '.' && p == src + 1) {
|
|
strcpy(dest, "PaxHeader/currentdir");
|
|
return (dest);
|
|
}
|
|
|
|
/*
|
|
* TODO: Push this string into the 'pax' structure to avoid
|
|
* recomputing it every time. That will also open the door
|
|
* to having clients override it.
|
|
*/
|
|
#if HAVE_GETPID && 0 /* Disable this for now; see above comment. */
|
|
sprintf(buff, "PaxHeader.%d", getpid());
|
|
#else
|
|
/* If the platform can't fetch the pid, don't include it. */
|
|
strcpy(buff, "PaxHeader");
|
|
#endif
|
|
/* General case: build a ustar-compatible name adding
|
|
* "/PaxHeader/". */
|
|
build_ustar_entry_name(dest, src, p - src, buff);
|
|
|
|
return (dest);
|
|
}
|
|
|
|
/*
|
|
* GNU PAX Format 1.0 requires the special name, which pattern is:
|
|
* <dir>/GNUSparseFile.<pid>/<original file name>
|
|
*
|
|
* Since reproducible archives are more important, use 0 as pid.
|
|
*
|
|
* This function is used for only Sparse file, a file type of which
|
|
* is regular file.
|
|
*/
|
|
static char *
|
|
build_gnu_sparse_name(char *dest, const char *src)
|
|
{
|
|
const char *p;
|
|
|
|
/* Handle the null filename case. */
|
|
if (src == NULL || *src == '\0') {
|
|
strcpy(dest, "GNUSparseFile/blank");
|
|
return (dest);
|
|
}
|
|
|
|
/* Prune final '/' and other unwanted final elements. */
|
|
p = src + strlen(src);
|
|
for (;;) {
|
|
/* Ends in "/", remove the '/' */
|
|
if (p > src && p[-1] == '/') {
|
|
--p;
|
|
continue;
|
|
}
|
|
/* Ends in "/.", remove the '.' */
|
|
if (p > src + 1 && p[-1] == '.'
|
|
&& p[-2] == '/') {
|
|
--p;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* General case: build a ustar-compatible name adding
|
|
* "/GNUSparseFile/". */
|
|
build_ustar_entry_name(dest, src, p - src, "GNUSparseFile.0");
|
|
|
|
return (dest);
|
|
}
|
|
|
|
/* Write two null blocks for the end of archive */
|
|
static int
|
|
archive_write_pax_close(struct archive_write *a)
|
|
{
|
|
return (__archive_write_nulls(a, 512 * 2));
|
|
}
|
|
|
|
static int
|
|
archive_write_pax_free(struct archive_write *a)
|
|
{
|
|
struct pax *pax;
|
|
|
|
pax = (struct pax *)a->format_data;
|
|
if (pax == NULL)
|
|
return (ARCHIVE_OK);
|
|
|
|
archive_string_free(&pax->pax_header);
|
|
archive_string_free(&pax->sparse_map);
|
|
archive_string_free(&pax->l_url_encoded_name);
|
|
sparse_list_clear(pax);
|
|
free(pax);
|
|
a->format_data = NULL;
|
|
return (ARCHIVE_OK);
|
|
}
|
|
|
|
static int
|
|
archive_write_pax_finish_entry(struct archive_write *a)
|
|
{
|
|
struct pax *pax;
|
|
uint64_t remaining;
|
|
int ret;
|
|
|
|
pax = (struct pax *)a->format_data;
|
|
remaining = pax->entry_bytes_remaining;
|
|
if (remaining == 0) {
|
|
while (pax->sparse_list) {
|
|
struct sparse_block *sb;
|
|
if (!pax->sparse_list->is_hole)
|
|
remaining += pax->sparse_list->remaining;
|
|
sb = pax->sparse_list->next;
|
|
free(pax->sparse_list);
|
|
pax->sparse_list = sb;
|
|
}
|
|
}
|
|
ret = __archive_write_nulls(a, (size_t)(remaining + pax->entry_padding));
|
|
pax->entry_bytes_remaining = pax->entry_padding = 0;
|
|
return (ret);
|
|
}
|
|
|
|
static ssize_t
|
|
archive_write_pax_data(struct archive_write *a, const void *buff, size_t s)
|
|
{
|
|
struct pax *pax;
|
|
size_t ws;
|
|
size_t total;
|
|
int ret;
|
|
|
|
pax = (struct pax *)a->format_data;
|
|
|
|
/*
|
|
* According to GNU PAX format 1.0, write a sparse map
|
|
* before the body.
|
|
*/
|
|
if (archive_strlen(&(pax->sparse_map))) {
|
|
ret = __archive_write_output(a, pax->sparse_map.s,
|
|
archive_strlen(&(pax->sparse_map)));
|
|
if (ret != ARCHIVE_OK)
|
|
return (ret);
|
|
ret = __archive_write_nulls(a, pax->sparse_map_padding);
|
|
if (ret != ARCHIVE_OK)
|
|
return (ret);
|
|
archive_string_empty(&(pax->sparse_map));
|
|
}
|
|
|
|
total = 0;
|
|
while (total < s) {
|
|
const unsigned char *p;
|
|
|
|
while (pax->sparse_list != NULL &&
|
|
pax->sparse_list->remaining == 0) {
|
|
struct sparse_block *sb = pax->sparse_list->next;
|
|
free(pax->sparse_list);
|
|
pax->sparse_list = sb;
|
|
}
|
|
|
|
if (pax->sparse_list == NULL)
|
|
return (total);
|
|
|
|
p = ((const unsigned char *)buff) + total;
|
|
ws = s - total;
|
|
if (ws > pax->sparse_list->remaining)
|
|
ws = (size_t)pax->sparse_list->remaining;
|
|
|
|
if (pax->sparse_list->is_hole) {
|
|
/* Current block is hole thus we do not write
|
|
* the body. */
|
|
pax->sparse_list->remaining -= ws;
|
|
total += ws;
|
|
continue;
|
|
}
|
|
|
|
ret = __archive_write_output(a, p, ws);
|
|
pax->sparse_list->remaining -= ws;
|
|
total += ws;
|
|
if (ret != ARCHIVE_OK)
|
|
return (ret);
|
|
}
|
|
return (total);
|
|
}
|
|
|
|
static int
|
|
has_non_ASCII(const char *_p)
|
|
{
|
|
const unsigned char *p = (const unsigned char *)_p;
|
|
|
|
if (p == NULL)
|
|
return (1);
|
|
while (*p != '\0' && *p < 128)
|
|
p++;
|
|
return (*p != '\0');
|
|
}
|
|
|
|
/*
|
|
* Used by extended attribute support; encodes the name
|
|
* so that there will be no '=' characters in the result.
|
|
*/
|
|
static char *
|
|
url_encode(const char *in)
|
|
{
|
|
const char *s;
|
|
char *d;
|
|
int out_len = 0;
|
|
char *out;
|
|
|
|
for (s = in; *s != '\0'; s++) {
|
|
if (*s < 33 || *s > 126 || *s == '%' || *s == '=')
|
|
out_len += 3;
|
|
else
|
|
out_len++;
|
|
}
|
|
|
|
out = (char *)malloc(out_len + 1);
|
|
if (out == NULL)
|
|
return (NULL);
|
|
|
|
for (s = in, d = out; *s != '\0'; s++) {
|
|
/* encode any non-printable ASCII character or '%' or '=' */
|
|
if (*s < 33 || *s > 126 || *s == '%' || *s == '=') {
|
|
/* URL encoding is '%' followed by two hex digits */
|
|
*d++ = '%';
|
|
*d++ = "0123456789ABCDEF"[0x0f & (*s >> 4)];
|
|
*d++ = "0123456789ABCDEF"[0x0f & *s];
|
|
} else {
|
|
*d++ = *s;
|
|
}
|
|
}
|
|
*d = '\0';
|
|
return (out);
|
|
}
|
|
|
|
/*
|
|
* Encode a sequence of bytes into a C string using base-64 encoding.
|
|
*
|
|
* Returns a null-terminated C string allocated with malloc(); caller
|
|
* is responsible for freeing the result.
|
|
*/
|
|
static char *
|
|
base64_encode(const char *s, size_t len)
|
|
{
|
|
static const char digits[64] =
|
|
{ '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','0','1','2','3','4','5','6','7',
|
|
'8','9','+','/' };
|
|
int v;
|
|
char *d, *out;
|
|
|
|
/* 3 bytes becomes 4 chars, but round up and allow for trailing NUL */
|
|
out = (char *)malloc((len * 4 + 2) / 3 + 1);
|
|
if (out == NULL)
|
|
return (NULL);
|
|
d = out;
|
|
|
|
/* Convert each group of 3 bytes into 4 characters. */
|
|
while (len >= 3) {
|
|
v = (((int)s[0] << 16) & 0xff0000)
|
|
| (((int)s[1] << 8) & 0xff00)
|
|
| (((int)s[2]) & 0x00ff);
|
|
s += 3;
|
|
len -= 3;
|
|
*d++ = digits[(v >> 18) & 0x3f];
|
|
*d++ = digits[(v >> 12) & 0x3f];
|
|
*d++ = digits[(v >> 6) & 0x3f];
|
|
*d++ = digits[(v) & 0x3f];
|
|
}
|
|
/* Handle final group of 1 byte (2 chars) or 2 bytes (3 chars). */
|
|
switch (len) {
|
|
case 0: break;
|
|
case 1:
|
|
v = (((int)s[0] << 16) & 0xff0000);
|
|
*d++ = digits[(v >> 18) & 0x3f];
|
|
*d++ = digits[(v >> 12) & 0x3f];
|
|
break;
|
|
case 2:
|
|
v = (((int)s[0] << 16) & 0xff0000)
|
|
| (((int)s[1] << 8) & 0xff00);
|
|
*d++ = digits[(v >> 18) & 0x3f];
|
|
*d++ = digits[(v >> 12) & 0x3f];
|
|
*d++ = digits[(v >> 6) & 0x3f];
|
|
break;
|
|
}
|
|
/* Add trailing NUL character so output is a valid C string. */
|
|
*d = '\0';
|
|
return (out);
|
|
}
|
|
|
|
static void
|
|
sparse_list_clear(struct pax *pax)
|
|
{
|
|
while (pax->sparse_list != NULL) {
|
|
struct sparse_block *sb = pax->sparse_list;
|
|
pax->sparse_list = sb->next;
|
|
free(sb);
|
|
}
|
|
pax->sparse_tail = NULL;
|
|
}
|
|
|
|
static int
|
|
_sparse_list_add_block(struct pax *pax, int64_t offset, int64_t length,
|
|
int is_hole)
|
|
{
|
|
struct sparse_block *sb;
|
|
|
|
sb = (struct sparse_block *)malloc(sizeof(*sb));
|
|
if (sb == NULL)
|
|
return (ARCHIVE_FATAL);
|
|
sb->next = NULL;
|
|
sb->is_hole = is_hole;
|
|
sb->offset = offset;
|
|
sb->remaining = length;
|
|
if (pax->sparse_list == NULL || pax->sparse_tail == NULL)
|
|
pax->sparse_list = pax->sparse_tail = sb;
|
|
else {
|
|
pax->sparse_tail->next = sb;
|
|
pax->sparse_tail = sb;
|
|
}
|
|
return (ARCHIVE_OK);
|
|
}
|
|
|
|
static int
|
|
sparse_list_add(struct pax *pax, int64_t offset, int64_t length)
|
|
{
|
|
int64_t last_offset;
|
|
int r;
|
|
|
|
if (pax->sparse_tail == NULL)
|
|
last_offset = 0;
|
|
else {
|
|
last_offset = pax->sparse_tail->offset +
|
|
pax->sparse_tail->remaining;
|
|
}
|
|
if (last_offset < offset) {
|
|
/* Add a hole block. */
|
|
r = _sparse_list_add_block(pax, last_offset,
|
|
offset - last_offset, 1);
|
|
if (r != ARCHIVE_OK)
|
|
return (r);
|
|
}
|
|
/* Add data block. */
|
|
return (_sparse_list_add_block(pax, offset, length, 0));
|
|
}
|
|
|