| /*- |
| * Copyright (c) 2003-2007 Tim Kientzle |
| * Copyright (c) 2011 Michihiro NAKAJIMA |
| * 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 AUTHOR(S) ``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 AUTHOR(S) 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. |
| */ |
| |
| #include "archive_platform.h" |
| __FBSDID("$FreeBSD: head/lib/libarchive/archive_write_set_format_ustar.c 191579 2009-04-27 18:35:03Z kientzle $"); |
| |
| |
| #ifdef HAVE_ERRNO_H |
| #include <errno.h> |
| #endif |
| #include <stdio.h> |
| #ifdef HAVE_STDLIB_H |
| #include <stdlib.h> |
| #endif |
| #ifdef HAVE_STRING_H |
| #include <string.h> |
| #endif |
| |
| #include "archive.h" |
| #include "archive_entry.h" |
| #include "archive_entry_locale.h" |
| #include "archive_private.h" |
| #include "archive_write_private.h" |
| |
| struct ustar { |
| uint64_t entry_bytes_remaining; |
| uint64_t entry_padding; |
| |
| struct archive_string_conv *opt_sconv; |
| struct archive_string_conv *sconv_default; |
| int init_default_conversion; |
| }; |
| |
| /* |
| * Define structure of POSIX 'ustar' tar header. |
| */ |
| #define USTAR_name_offset 0 |
| #define USTAR_name_size 100 |
| #define USTAR_mode_offset 100 |
| #define USTAR_mode_size 6 |
| #define USTAR_mode_max_size 8 |
| #define USTAR_uid_offset 108 |
| #define USTAR_uid_size 6 |
| #define USTAR_uid_max_size 8 |
| #define USTAR_gid_offset 116 |
| #define USTAR_gid_size 6 |
| #define USTAR_gid_max_size 8 |
| #define USTAR_size_offset 124 |
| #define USTAR_size_size 11 |
| #define USTAR_size_max_size 12 |
| #define USTAR_mtime_offset 136 |
| #define USTAR_mtime_size 11 |
| #define USTAR_mtime_max_size 11 |
| #define USTAR_checksum_offset 148 |
| #define USTAR_checksum_size 8 |
| #define USTAR_typeflag_offset 156 |
| #define USTAR_typeflag_size 1 |
| #define USTAR_linkname_offset 157 |
| #define USTAR_linkname_size 100 |
| #define USTAR_magic_offset 257 |
| #define USTAR_magic_size 6 |
| #define USTAR_version_offset 263 |
| #define USTAR_version_size 2 |
| #define USTAR_uname_offset 265 |
| #define USTAR_uname_size 32 |
| #define USTAR_gname_offset 297 |
| #define USTAR_gname_size 32 |
| #define USTAR_rdevmajor_offset 329 |
| #define USTAR_rdevmajor_size 6 |
| #define USTAR_rdevmajor_max_size 8 |
| #define USTAR_rdevminor_offset 337 |
| #define USTAR_rdevminor_size 6 |
| #define USTAR_rdevminor_max_size 8 |
| #define USTAR_prefix_offset 345 |
| #define USTAR_prefix_size 155 |
| #define USTAR_padding_offset 500 |
| #define USTAR_padding_size 12 |
| |
| /* |
| * A filled-in copy of the header for initialization. |
| */ |
| static const char template_header[] = { |
| /* name: 100 bytes */ |
| 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, |
| 0,0,0,0, |
| /* Mode, space-null termination: 8 bytes */ |
| '0','0','0','0','0','0', ' ','\0', |
| /* uid, space-null termination: 8 bytes */ |
| '0','0','0','0','0','0', ' ','\0', |
| /* gid, space-null termination: 8 bytes */ |
| '0','0','0','0','0','0', ' ','\0', |
| /* size, space termation: 12 bytes */ |
| '0','0','0','0','0','0','0','0','0','0','0', ' ', |
| /* mtime, space termation: 12 bytes */ |
| '0','0','0','0','0','0','0','0','0','0','0', ' ', |
| /* Initial checksum value: 8 spaces */ |
| ' ',' ',' ',' ',' ',' ',' ',' ', |
| /* Typeflag: 1 byte */ |
| '0', /* '0' = regular file */ |
| /* Linkname: 100 bytes */ |
| 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, |
| 0,0,0,0, |
| /* Magic: 6 bytes, Version: 2 bytes */ |
| 'u','s','t','a','r','\0', '0','0', |
| /* Uname: 32 bytes */ |
| 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, |
| /* Gname: 32 bytes */ |
| 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, |
| /* rdevmajor + space/null padding: 8 bytes */ |
| '0','0','0','0','0','0', ' ','\0', |
| /* rdevminor + space/null padding: 8 bytes */ |
| '0','0','0','0','0','0', ' ','\0', |
| /* Prefix: 155 bytes */ |
| 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0, |
| /* Padding: 12 bytes */ |
| 0,0,0,0,0,0,0,0, 0,0,0,0 |
| }; |
| |
| static ssize_t archive_write_ustar_data(struct archive_write *a, const void *buff, |
| size_t s); |
| static int archive_write_ustar_free(struct archive_write *); |
| static int archive_write_ustar_close(struct archive_write *); |
| static int archive_write_ustar_finish_entry(struct archive_write *); |
| static int archive_write_ustar_header(struct archive_write *, |
| struct archive_entry *entry); |
| static int archive_write_ustar_options(struct archive_write *, |
| const char *, const char *); |
| static int format_256(int64_t, char *, int); |
| static int format_number(int64_t, char *, int size, int max, int strict); |
| static int format_octal(int64_t, char *, int); |
| |
| /* |
| * Set output format to 'ustar' format. |
| */ |
| int |
| archive_write_set_format_ustar(struct archive *_a) |
| { |
| struct archive_write *a = (struct archive_write *)_a; |
| struct ustar *ustar; |
| |
| archive_check_magic(_a, ARCHIVE_WRITE_MAGIC, |
| ARCHIVE_STATE_NEW, "archive_write_set_format_ustar"); |
| |
| /* If someone else was already registered, unregister them. */ |
| if (a->format_free != NULL) |
| (a->format_free)(a); |
| |
| /* Basic internal sanity test. */ |
| if (sizeof(template_header) != 512) { |
| archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, |
| "Internal: template_header wrong size: %zu should be 512", |
| sizeof(template_header)); |
| return (ARCHIVE_FATAL); |
| } |
| |
| ustar = (struct ustar *)malloc(sizeof(*ustar)); |
| if (ustar == NULL) { |
| archive_set_error(&a->archive, ENOMEM, |
| "Can't allocate ustar data"); |
| return (ARCHIVE_FATAL); |
| } |
| memset(ustar, 0, sizeof(*ustar)); |
| a->format_data = ustar; |
| a->format_name = "ustar"; |
| a->format_options = archive_write_ustar_options; |
| a->format_write_header = archive_write_ustar_header; |
| a->format_write_data = archive_write_ustar_data; |
| a->format_close = archive_write_ustar_close; |
| a->format_free = archive_write_ustar_free; |
| a->format_finish_entry = archive_write_ustar_finish_entry; |
| a->archive.archive_format = ARCHIVE_FORMAT_TAR_USTAR; |
| a->archive.archive_format_name = "POSIX ustar"; |
| return (ARCHIVE_OK); |
| } |
| |
| static int |
| archive_write_ustar_options(struct archive_write *a, const char *key, |
| const char *val) |
| { |
| struct ustar *ustar = (struct ustar *)a->format_data; |
| int ret = ARCHIVE_FAILED; |
| |
| if (strcmp(key, "hdrcharset") == 0) { |
| if (val == NULL || val[0] == 0) |
| archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, |
| "%s: hdrcharset option needs a character-set name", |
| a->format_name); |
| else { |
| ustar->opt_sconv = archive_string_conversion_to_charset( |
| &a->archive, val, 0); |
| if (ustar->opt_sconv != NULL) |
| ret = ARCHIVE_OK; |
| else |
| ret = ARCHIVE_FATAL; |
| } |
| } else |
| archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, |
| "%s: unknown keyword ``%s''", a->format_name, key); |
| |
| return (ret); |
| } |
| |
| static int |
| archive_write_ustar_header(struct archive_write *a, struct archive_entry *entry) |
| { |
| char buff[512]; |
| int ret, ret2; |
| struct ustar *ustar; |
| struct archive_string_conv *sconv; |
| |
| ustar = (struct ustar *)a->format_data; |
| |
| /* Setup default string conversion. */ |
| if (ustar->opt_sconv == NULL) { |
| if (!ustar->init_default_conversion) { |
| ustar->sconv_default = |
| archive_string_default_conversion_for_write(&(a->archive)); |
| ustar->init_default_conversion = 1; |
| } |
| sconv = ustar->sconv_default; |
| } else |
| sconv = ustar->opt_sconv; |
| |
| /* Sanity check. */ |
| if (archive_entry_pathname(entry) == NULL) { |
| archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, |
| "Can't record entry in tar file without pathname"); |
| return (ARCHIVE_FAILED); |
| } |
| |
| /* Only regular files (not hardlinks) have data. */ |
| if (archive_entry_hardlink(entry) != NULL || |
| archive_entry_symlink(entry) != NULL || |
| !(archive_entry_filetype(entry) == AE_IFREG)) |
| archive_entry_set_size(entry, 0); |
| |
| if (AE_IFDIR == archive_entry_filetype(entry)) { |
| const char *p; |
| char *t; |
| /* |
| * Ensure a trailing '/'. Modify the entry so |
| * the client sees the change. |
| */ |
| p = archive_entry_pathname(entry); |
| if (p[strlen(p) - 1] != '/') { |
| t = (char *)malloc(strlen(p) + 2); |
| if (t == NULL) { |
| archive_set_error(&a->archive, ENOMEM, |
| "Can't allocate ustar data"); |
| return(ARCHIVE_FATAL); |
| } |
| strcpy(t, p); |
| strcat(t, "/"); |
| archive_entry_copy_pathname(entry, t); |
| free(t); |
| } |
| } |
| |
| ret = __archive_write_format_header_ustar(a, buff, entry, -1, 1, sconv); |
| if (ret < ARCHIVE_WARN) |
| return (ret); |
| ret2 = __archive_write_output(a, buff, 512); |
| if (ret2 < ARCHIVE_WARN) |
| return (ret2); |
| if (ret2 < ret) |
| ret = ret2; |
| |
| ustar->entry_bytes_remaining = archive_entry_size(entry); |
| ustar->entry_padding = 0x1ff & (-(int64_t)ustar->entry_bytes_remaining); |
| return (ret); |
| } |
| |
| /* |
| * Format a basic 512-byte "ustar" header. |
| * |
| * Returns -1 if format failed (due to field overflow). |
| * Note that this always formats as much of the header as possible. |
| * If "strict" is set to zero, it will extend numeric fields as |
| * necessary (overwriting terminators or using base-256 extensions). |
| * |
| * This is exported so that other 'tar' formats can use it. |
| */ |
| int |
| __archive_write_format_header_ustar(struct archive_write *a, char h[512], |
| struct archive_entry *entry, int tartype, int strict, |
| struct archive_string_conv *sconv) |
| { |
| unsigned int checksum; |
| int i, r, ret; |
| size_t copy_length; |
| const char *p, *pp; |
| int mytartype; |
| |
| ret = 0; |
| mytartype = -1; |
| /* |
| * The "template header" already includes the "ustar" |
| * signature, various end-of-field markers and other required |
| * elements. |
| */ |
| memcpy(h, &template_header, 512); |
| |
| /* |
| * Because the block is already null-filled, and strings |
| * are allowed to exactly fill their destination (without null), |
| * I use memcpy(dest, src, strlen()) here a lot to copy strings. |
| */ |
| r = archive_entry_pathname_l(entry, &pp, ©_length, sconv); |
| if (r != 0) { |
| if (errno == ENOMEM) { |
| archive_set_error(&a->archive, ENOMEM, |
| "Can't allocate memory for Pathname"); |
| return (ARCHIVE_FATAL); |
| } |
| archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT, |
| "Can't translate pathname '%s' to %s", |
| pp, archive_string_conversion_charset_name(sconv)); |
| ret = ARCHIVE_WARN; |
| } |
| if (copy_length <= USTAR_name_size) |
| memcpy(h + USTAR_name_offset, pp, copy_length); |
| else { |
| /* Store in two pieces, splitting at a '/'. */ |
| p = strchr(pp + copy_length - USTAR_name_size - 1, '/'); |
| /* |
| * Look for the next '/' if we chose the first character |
| * as the separator. (ustar format doesn't permit |
| * an empty prefix.) |
| */ |
| if (p == pp) |
| p = strchr(p + 1, '/'); |
| /* Fail if the name won't fit. */ |
| if (!p) { |
| /* No separator. */ |
| archive_set_error(&a->archive, ENAMETOOLONG, |
| "Pathname too long"); |
| ret = ARCHIVE_FAILED; |
| } else if (p[1] == '\0') { |
| /* |
| * The only feasible separator is a final '/'; |
| * this would result in a non-empty prefix and |
| * an empty name, which POSIX doesn't |
| * explicitly forbid, but it just feels wrong. |
| */ |
| archive_set_error(&a->archive, ENAMETOOLONG, |
| "Pathname too long"); |
| ret = ARCHIVE_FAILED; |
| } else if (p > pp + USTAR_prefix_size) { |
| /* Prefix is too long. */ |
| archive_set_error(&a->archive, ENAMETOOLONG, |
| "Pathname too long"); |
| ret = ARCHIVE_FAILED; |
| } else { |
| /* Copy prefix and remainder to appropriate places */ |
| memcpy(h + USTAR_prefix_offset, pp, p - pp); |
| memcpy(h + USTAR_name_offset, p + 1, |
| pp + copy_length - p - 1); |
| } |
| } |
| |
| r = archive_entry_hardlink_l(entry, &p, ©_length, sconv); |
| if (r != 0) { |
| if (errno == ENOMEM) { |
| archive_set_error(&a->archive, ENOMEM, |
| "Can't allocate memory for Linkname"); |
| return (ARCHIVE_FATAL); |
| } |
| archive_set_error(&a->archive, |
| ARCHIVE_ERRNO_FILE_FORMAT, |
| "Can't translate linkname '%s' to %s", |
| p, archive_string_conversion_charset_name(sconv)); |
| ret = ARCHIVE_WARN; |
| } |
| if (copy_length > 0) |
| mytartype = '1'; |
| else { |
| r = archive_entry_symlink_l(entry, &p, ©_length, sconv); |
| if (r != 0) { |
| if (errno == ENOMEM) { |
| archive_set_error(&a->archive, ENOMEM, |
| "Can't allocate memory for Linkname"); |
| return (ARCHIVE_FATAL); |
| } |
| archive_set_error(&a->archive, |
| ARCHIVE_ERRNO_FILE_FORMAT, |
| "Can't translate linkname '%s' to %s", |
| p, archive_string_conversion_charset_name(sconv)); |
| ret = ARCHIVE_WARN; |
| } |
| } |
| if (copy_length > 0) { |
| if (copy_length > USTAR_linkname_size) { |
| archive_set_error(&a->archive, ENAMETOOLONG, |
| "Link contents too long"); |
| ret = ARCHIVE_FAILED; |
| copy_length = USTAR_linkname_size; |
| } |
| memcpy(h + USTAR_linkname_offset, p, copy_length); |
| } |
| |
| r = archive_entry_uname_l(entry, &p, ©_length, sconv); |
| if (r != 0) { |
| if (errno == ENOMEM) { |
| archive_set_error(&a->archive, ENOMEM, |
| "Can't allocate memory for Uname"); |
| return (ARCHIVE_FATAL); |
| } |
| archive_set_error(&a->archive, |
| ARCHIVE_ERRNO_FILE_FORMAT, |
| "Can't translate uname '%s' to %s", |
| p, archive_string_conversion_charset_name(sconv)); |
| ret = ARCHIVE_WARN; |
| } |
| if (copy_length > 0) { |
| if (copy_length > USTAR_uname_size) { |
| archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, |
| "Username too long"); |
| ret = ARCHIVE_FAILED; |
| copy_length = USTAR_uname_size; |
| } |
| memcpy(h + USTAR_uname_offset, p, copy_length); |
| } |
| |
| r = archive_entry_gname_l(entry, &p, ©_length, sconv); |
| if (r != 0) { |
| if (errno == ENOMEM) { |
| archive_set_error(&a->archive, ENOMEM, |
| "Can't allocate memory for Gname"); |
| return (ARCHIVE_FATAL); |
| } |
| archive_set_error(&a->archive, |
| ARCHIVE_ERRNO_FILE_FORMAT, |
| "Can't translate gname '%s' to %s", |
| p, archive_string_conversion_charset_name(sconv)); |
| ret = ARCHIVE_WARN; |
| } |
| if (copy_length > 0) { |
| if (strlen(p) > USTAR_gname_size) { |
| archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, |
| "Group name too long"); |
| ret = ARCHIVE_FAILED; |
| copy_length = USTAR_gname_size; |
| } |
| memcpy(h + USTAR_gname_offset, p, copy_length); |
| } |
| |
| if (format_number(archive_entry_mode(entry) & 07777, |
| h + USTAR_mode_offset, USTAR_mode_size, USTAR_mode_max_size, strict)) { |
| archive_set_error(&a->archive, ERANGE, |
| "Numeric mode too large"); |
| ret = ARCHIVE_FAILED; |
| } |
| |
| if (format_number(archive_entry_uid(entry), |
| h + USTAR_uid_offset, USTAR_uid_size, USTAR_uid_max_size, strict)) { |
| archive_set_error(&a->archive, ERANGE, |
| "Numeric user ID too large"); |
| ret = ARCHIVE_FAILED; |
| } |
| |
| if (format_number(archive_entry_gid(entry), |
| h + USTAR_gid_offset, USTAR_gid_size, USTAR_gid_max_size, strict)) { |
| archive_set_error(&a->archive, ERANGE, |
| "Numeric group ID too large"); |
| ret = ARCHIVE_FAILED; |
| } |
| |
| if (format_number(archive_entry_size(entry), |
| h + USTAR_size_offset, USTAR_size_size, USTAR_size_max_size, strict)) { |
| archive_set_error(&a->archive, ERANGE, |
| "File size out of range"); |
| ret = ARCHIVE_FAILED; |
| } |
| |
| if (format_number(archive_entry_mtime(entry), |
| h + USTAR_mtime_offset, USTAR_mtime_size, USTAR_mtime_max_size, strict)) { |
| archive_set_error(&a->archive, ERANGE, |
| "File modification time too large"); |
| ret = ARCHIVE_FAILED; |
| } |
| |
| if (archive_entry_filetype(entry) == AE_IFBLK |
| || archive_entry_filetype(entry) == AE_IFCHR) { |
| if (format_number(archive_entry_rdevmajor(entry), |
| h + USTAR_rdevmajor_offset, USTAR_rdevmajor_size, |
| USTAR_rdevmajor_max_size, strict)) { |
| archive_set_error(&a->archive, ERANGE, |
| "Major device number too large"); |
| ret = ARCHIVE_FAILED; |
| } |
| |
| if (format_number(archive_entry_rdevminor(entry), |
| h + USTAR_rdevminor_offset, USTAR_rdevminor_size, |
| USTAR_rdevminor_max_size, strict)) { |
| archive_set_error(&a->archive, ERANGE, |
| "Minor device number too large"); |
| ret = ARCHIVE_FAILED; |
| } |
| } |
| |
| if (tartype >= 0) { |
| h[USTAR_typeflag_offset] = tartype; |
| } else if (mytartype >= 0) { |
| h[USTAR_typeflag_offset] = mytartype; |
| } else { |
| switch (archive_entry_filetype(entry)) { |
| case AE_IFREG: h[USTAR_typeflag_offset] = '0' ; break; |
| case AE_IFLNK: h[USTAR_typeflag_offset] = '2' ; break; |
| case AE_IFCHR: h[USTAR_typeflag_offset] = '3' ; break; |
| case AE_IFBLK: h[USTAR_typeflag_offset] = '4' ; break; |
| case AE_IFDIR: h[USTAR_typeflag_offset] = '5' ; break; |
| case AE_IFIFO: h[USTAR_typeflag_offset] = '6' ; break; |
| case AE_IFSOCK: |
| archive_set_error(&a->archive, |
| ARCHIVE_ERRNO_FILE_FORMAT, |
| "tar format cannot archive socket"); |
| return (ARCHIVE_FAILED); |
| default: |
| archive_set_error(&a->archive, |
| ARCHIVE_ERRNO_FILE_FORMAT, |
| "tar format cannot archive this (mode=0%lo)", |
| (unsigned long)archive_entry_mode(entry)); |
| ret = ARCHIVE_FAILED; |
| } |
| } |
| |
| checksum = 0; |
| for (i = 0; i < 512; i++) |
| checksum += 255 & (unsigned int)h[i]; |
| h[USTAR_checksum_offset + 6] = '\0'; /* Can't be pre-set in the template. */ |
| /* h[USTAR_checksum_offset + 7] = ' '; */ /* This is pre-set in the template. */ |
| format_octal(checksum, h + USTAR_checksum_offset, 6); |
| return (ret); |
| } |
| |
| /* |
| * Format a number into a field, with some intelligence. |
| */ |
| static int |
| format_number(int64_t v, char *p, int s, int maxsize, int strict) |
| { |
| int64_t limit; |
| |
| limit = ((int64_t)1 << (s*3)); |
| |
| /* "Strict" only permits octal values with proper termination. */ |
| if (strict) |
| return (format_octal(v, p, s)); |
| |
| /* |
| * In non-strict mode, we allow the number to overwrite one or |
| * more bytes of the field termination. Even old tar |
| * implementations should be able to handle this with no |
| * problem. |
| */ |
| if (v >= 0) { |
| while (s <= maxsize) { |
| if (v < limit) |
| return (format_octal(v, p, s)); |
| s++; |
| limit <<= 3; |
| } |
| } |
| |
| /* Base-256 can handle any number, positive or negative. */ |
| return (format_256(v, p, maxsize)); |
| } |
| |
| /* |
| * Format a number into the specified field using base-256. |
| */ |
| static int |
| format_256(int64_t v, char *p, int s) |
| { |
| p += s; |
| while (s-- > 0) { |
| *--p = (char)(v & 0xff); |
| v >>= 8; |
| } |
| *p |= 0x80; /* Set the base-256 marker bit. */ |
| return (0); |
| } |
| |
| /* |
| * Format a number into the specified field. |
| */ |
| static int |
| format_octal(int64_t v, char *p, int s) |
| { |
| int len; |
| |
| len = s; |
| |
| /* Octal values can't be negative, so use 0. */ |
| if (v < 0) { |
| while (len-- > 0) |
| *p++ = '0'; |
| return (-1); |
| } |
| |
| p += s; /* Start at the end and work backwards. */ |
| while (s-- > 0) { |
| *--p = (char)('0' + (v & 7)); |
| v >>= 3; |
| } |
| |
| if (v == 0) |
| return (0); |
| |
| /* If it overflowed, fill field with max value. */ |
| while (len-- > 0) |
| *p++ = '7'; |
| |
| return (-1); |
| } |
| |
| static int |
| archive_write_ustar_close(struct archive_write *a) |
| { |
| return (__archive_write_nulls(a, 512*2)); |
| } |
| |
| static int |
| archive_write_ustar_free(struct archive_write *a) |
| { |
| struct ustar *ustar; |
| |
| ustar = (struct ustar *)a->format_data; |
| free(ustar); |
| a->format_data = NULL; |
| return (ARCHIVE_OK); |
| } |
| |
| static int |
| archive_write_ustar_finish_entry(struct archive_write *a) |
| { |
| struct ustar *ustar; |
| int ret; |
| |
| ustar = (struct ustar *)a->format_data; |
| ret = __archive_write_nulls(a, |
| ustar->entry_bytes_remaining + ustar->entry_padding); |
| ustar->entry_bytes_remaining = ustar->entry_padding = 0; |
| return (ret); |
| } |
| |
| static ssize_t |
| archive_write_ustar_data(struct archive_write *a, const void *buff, size_t s) |
| { |
| struct ustar *ustar; |
| int ret; |
| |
| ustar = (struct ustar *)a->format_data; |
| if (s > ustar->entry_bytes_remaining) |
| s = ustar->entry_bytes_remaining; |
| ret = __archive_write_output(a, buff, s); |
| ustar->entry_bytes_remaining -= s; |
| if (ret != ARCHIVE_OK) |
| return (ret); |
| return (s); |
| } |