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minix/lib/libarchive/archive_read_support_format_xar.c
Ben Gras 470ab03b86 libarchive port by Gautam Tirumala.
2010-07-13 19:17:02 +00:00

3150 lines
75 KiB
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/*-
* Copyright (c) 2009 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("$FreeBSD$");
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#if HAVE_LIBXML_XMLREADER_H
#include <libxml/xmlreader.h>
#elif HAVE_BSDXML_H
#include <bsdxml.h>
#elif HAVE_EXPAT_H
#include <expat.h>
#endif
#ifdef HAVE_BZLIB_H
#include <bzlib.h>
#endif
#if HAVE_LZMA_H
#include <lzma.h>
#elif HAVE_LZMADEC_H
#include <lzmadec.h>
#endif
#ifdef HAVE_ZLIB_H
#include <zlib.h>
#endif
#include "archive.h"
#include "archive_endian.h"
#include "archive_entry.h"
#include "archive_hash.h"
#include "archive_private.h"
#include "archive_read_private.h"
#if (!defined(HAVE_LIBXML_XMLREADER_H) && \
!defined(HAVE_BSDXML_H) && !defined(HAVE_EXPAT_H)) ||\
!defined(HAVE_ZLIB_H) || \
!defined(ARCHIVE_HAS_MD5) || !defined(ARCHIVE_HAS_SHA1)
/*
* xar needs several external libraries.
* o libxml2 or expat --- XML parser
* o openssl or MD5/SHA1 hash function
* o zlib
* o bzlib2 (option)
* o liblzma (option)
*/
int
archive_read_support_format_xar(struct archive *_a)
{
struct archive_read *a = (struct archive_read *)_a;
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"Xar not supported on this platform");
return (ARCHIVE_WARN);
}
#else /* Support xar format */
//#define DEBUG 1
//#define DEBUG_PRINT_TOC 1
#if DEBUG_PRINT_TOC
#define PRINT_TOC(d, outbytes) do { \
unsigned char *x = (unsigned char *)(uintptr_t)d; \
unsigned char c = x[outbytes-1]; \
x[outbytes - 1] = 0; \
fprintf(stderr, "%s", x); \
fprintf(stderr, "%c", c); \
x[outbytes - 1] = c; \
} while (0)
#else
#define PRINT_TOC(d, outbytes)
#endif
#define HEADER_MAGIC 0x78617221
#define HEADER_SIZE 28
#define HEADER_VERSION 1
#define CKSUM_NONE 0
#define CKSUM_SHA1 1
#define CKSUM_MD5 2
#define MD5_SIZE 16
#define SHA1_SIZE 20
#define MAX_SUM_SIZE 20
enum enctype {
NONE,
GZIP,
BZIP2,
LZMA,
XZ,
};
struct chksumval {
int alg;
size_t len;
unsigned char val[MAX_SUM_SIZE];
};
struct chksumwork {
int alg;
#ifdef ARCHIVE_HAS_MD5
archive_md5_ctx md5ctx;
#endif
#ifdef ARCHIVE_HAS_SHA1
archive_sha1_ctx sha1ctx;
#endif
};
struct xattr {
struct xattr *next;
struct archive_string name;
uint64_t id;
uint64_t length;
uint64_t offset;
uint64_t size;
enum enctype encoding;
struct chksumval a_sum;
struct chksumval e_sum;
struct archive_string fstype;
};
struct xar_file {
struct xar_file *next;
struct xar_file *hdnext;
struct xar_file *parent;
int subdirs;
unsigned int has;
#define HAS_DATA 0x00001
#define HAS_PATHNAME 0x00002
#define HAS_SYMLINK 0x00004
#define HAS_TIME 0x00008
#define HAS_UID 0x00010
#define HAS_GID 0x00020
#define HAS_MODE 0x00040
#define HAS_TYPE 0x00080
#define HAS_DEV 0x00100
#define HAS_DEVMAJOR 0x00200
#define HAS_DEVMINOR 0x00400
#define HAS_INO 0x00800
#define HAS_FFLAGS 0x01000
#define HAS_XATTR 0x02000
#define HAS_ACL 0x04000
uint64_t id;
uint64_t length;
uint64_t offset;
uint64_t size;
enum enctype encoding;
struct chksumval a_sum;
struct chksumval e_sum;
struct archive_string pathname;
struct archive_string symlink;
time_t ctime;
time_t mtime;
time_t atime;
struct archive_string uname;
uid_t uid;
struct archive_string gname;
gid_t gid;
mode_t mode;
dev_t dev;
dev_t devmajor;
dev_t devminor;
int64_t ino64;
struct archive_string fflags_text;
unsigned int link;
unsigned int nlink;
struct archive_string hardlink;
struct xattr *xattr_list;
};
struct hdlink {
struct hdlink *next;
unsigned int id;
int cnt;
struct xar_file *files;
};
struct heap_queue {
struct xar_file **files;
int allocated;
int used;
};
enum xmlstatus {
INIT,
XAR,
TOC,
TOC_CREATION_TIME,
TOC_CHECKSUM,
TOC_CHECKSUM_OFFSET,
TOC_CHECKSUM_SIZE,
TOC_FILE,
FILE_DATA,
FILE_DATA_LENGTH,
FILE_DATA_OFFSET,
FILE_DATA_SIZE,
FILE_DATA_ENCODING,
FILE_DATA_A_CHECKSUM,
FILE_DATA_E_CHECKSUM,
FILE_DATA_CONTENT,
FILE_EA,
FILE_EA_LENGTH,
FILE_EA_OFFSET,
FILE_EA_SIZE,
FILE_EA_ENCODING,
FILE_EA_A_CHECKSUM,
FILE_EA_E_CHECKSUM,
FILE_EA_NAME,
FILE_EA_FSTYPE,
FILE_CTIME,
FILE_MTIME,
FILE_ATIME,
FILE_GROUP,
FILE_GID,
FILE_USER,
FILE_UID,
FILE_MODE,
FILE_DEVICE,
FILE_DEVICE_MAJOR,
FILE_DEVICE_MINOR,
FILE_DEVICENO,
FILE_INODE,
FILE_LINK,
FILE_TYPE,
FILE_NAME,
FILE_ACL,
FILE_ACL_DEFAULT,
FILE_ACL_ACCESS,
FILE_ACL_APPLEEXTENDED,
/* BSD file flags. */
FILE_FLAGS,
FILE_FLAGS_USER_NODUMP,
FILE_FLAGS_USER_IMMUTABLE,
FILE_FLAGS_USER_APPEND,
FILE_FLAGS_USER_OPAQUE,
FILE_FLAGS_USER_NOUNLINK,
FILE_FLAGS_SYS_ARCHIVED,
FILE_FLAGS_SYS_IMMUTABLE,
FILE_FLAGS_SYS_APPEND,
FILE_FLAGS_SYS_NOUNLINK,
FILE_FLAGS_SYS_SNAPSHOT,
/* Linux file flags. */
FILE_EXT2,
FILE_EXT2_SecureDeletion,
FILE_EXT2_Undelete,
FILE_EXT2_Compress,
FILE_EXT2_Synchronous,
FILE_EXT2_Immutable,
FILE_EXT2_AppendOnly,
FILE_EXT2_NoDump,
FILE_EXT2_NoAtime,
FILE_EXT2_CompDirty,
FILE_EXT2_CompBlock,
FILE_EXT2_NoCompBlock,
FILE_EXT2_CompError,
FILE_EXT2_BTree,
FILE_EXT2_HashIndexed,
FILE_EXT2_iMagic,
FILE_EXT2_Journaled,
FILE_EXT2_NoTail,
FILE_EXT2_DirSync,
FILE_EXT2_TopDir,
FILE_EXT2_Reserved,
UNKNOWN,
};
struct unknown_tag {
struct unknown_tag *next;
struct archive_string name;
};
struct xar {
uint64_t offset; /* Current position in the file. */
int64_t total;
uint64_t h_base;
int end_of_file;
unsigned char buff[1024*32];
enum xmlstatus xmlsts;
enum xmlstatus xmlsts_unknown;
struct unknown_tag *unknowntags;
int base64text;
/*
* TOC
*/
uint64_t toc_remaining;
uint64_t toc_total;
uint64_t toc_chksum_offset;
uint64_t toc_chksum_size;
/*
* For Decoding data.
*/
enum enctype rd_encoding;
z_stream stream;
int stream_valid;
#ifdef HAVE_BZLIB_H
bz_stream bzstream;
int bzstream_valid;
#endif
#if HAVE_LZMA_H && HAVE_LIBLZMA
lzma_stream lzstream;
int lzstream_valid;
#elif HAVE_LZMADEC_H && HAVE_LIBLZMADEC
lzmadec_stream lzstream;
int lzstream_valid;
#endif
/*
* For Checksum data.
*/
struct chksumwork a_sumwrk;
struct chksumwork e_sumwrk;
struct xar_file *file; /* current reading file. */
struct xattr *xattr; /* current reading extended attribute. */
struct heap_queue file_queue;
struct xar_file *hdlink_orgs;
struct hdlink *hdlink_list;
int entry_init;
uint64_t entry_total;
uint64_t entry_remaining;
uint64_t entry_size;
enum enctype entry_encoding;
struct chksumval entry_a_sum;
struct chksumval entry_e_sum;
};
struct xmlattr {
struct xmlattr *next;
char *name;
char *value;
};
struct xmlattr_list {
struct xmlattr *first;
struct xmlattr **last;
};
static int xar_bid(struct archive_read *);
static int xar_read_header(struct archive_read *,
struct archive_entry *);
static int xar_read_data(struct archive_read *,
const void **, size_t *, off_t *);
static int xar_read_data_skip(struct archive_read *);
static int xar_cleanup(struct archive_read *);
static int move_reading_point(struct archive_read *, uint64_t);
static int rd_contents_init(struct archive_read *,
enum enctype, int, int);
static int rd_contents(struct archive_read *, const void **,
size_t *, size_t *, uint64_t);
static uint64_t atol10(const char *, size_t);
static int64_t atol8(const char *, size_t);
static size_t atohex(unsigned char *, size_t, const char *, size_t);
static time_t parse_time(const char *p, size_t n);
static void heap_add_entry(struct heap_queue *, struct xar_file *);
static struct xar_file *heap_get_entry(struct heap_queue *);
static void add_link(struct xar *, struct xar_file *);
static void checksum_init(struct archive_read *, int, int);
static void checksum_update(struct archive_read *, const void *,
size_t, const void *, size_t);
static int checksum_final(struct archive_read *, const void *,
size_t, const void *, size_t);
static int decompression_init(struct archive_read *, enum enctype);
static int decompress(struct archive_read *, const void **,
size_t *, const void *, size_t *);
static int decompression_cleanup(struct archive_read *);
static void xmlattr_cleanup(struct xmlattr_list *);
static void file_new(struct xar *, struct xmlattr_list *);
static void file_free(struct xar_file *);
static void xattr_new(struct xar *, struct xmlattr_list *);
static void xattr_free(struct xattr *);
static int getencoding(struct xmlattr_list *);
static int getsumalgorithm(struct xmlattr_list *);
static void unknowntag_start(struct xar *, const char *);
static void unknowntag_end(struct xar *, const char *);
static void xml_start(void *, const char *, struct xmlattr_list *);
static void xml_end(void *, const char *);
static void xml_data(void *, const char *, int);
static int xml_parse_file_flags(struct xar *, const char *);
static int xml_parse_file_ext2(struct xar *, const char *);
#if defined(HAVE_LIBXML_XMLREADER_H)
static int xml2_xmlattr_setup(struct xmlattr_list *, xmlTextReaderPtr);
static int xml2_read_cb(void *, char *, int);
static int xml2_close_cb(void *);
static void xml2_error_hdr(void *, const char *, xmlParserSeverities,
xmlTextReaderLocatorPtr);
static int xml2_read_toc(struct archive_read *);
#elif defined(HAVE_BSDXML_H) || defined(HAVE_EXPAT_H)
static void expat_xmlattr_setup(struct xmlattr_list *, const XML_Char **);
static void expat_start_cb(void *, const XML_Char *, const XML_Char **);
static void expat_end_cb(void *, const XML_Char *);
static void expat_data_cb(void *, const XML_Char *, int);
static int expat_read_toc(struct archive_read *);
#endif
int
archive_read_support_format_xar(struct archive *_a)
{
struct xar *xar;
struct archive_read *a = (struct archive_read *)_a;
int r;
xar = (struct xar *)calloc(1, sizeof(*xar));
if (xar == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate xar data");
return (ARCHIVE_FATAL);
}
r = __archive_read_register_format(a,
xar,
"xar",
xar_bid,
NULL,
xar_read_header,
xar_read_data,
xar_read_data_skip,
xar_cleanup);
if (r != ARCHIVE_OK)
free(xar);
return (r);
}
static int
xar_bid(struct archive_read *a)
{
const unsigned char *b;
int bid;
b = __archive_read_ahead(a, HEADER_SIZE, NULL);
if (b == NULL)
return (-1);
bid = 0;
/*
* Verify magic code
*/
if (archive_be32dec(b) != HEADER_MAGIC)
return (0);
bid += 32;
/*
* Verify header size
*/
if (archive_be16dec(b+4) != HEADER_SIZE)
return (0);
bid += 16;
/*
* Verify header version
*/
if (archive_be16dec(b+6) != HEADER_VERSION)
return (0);
bid += 16;
/*
* Verify type of checksum
*/
switch (archive_be32dec(b+24)) {
case CKSUM_NONE:
case CKSUM_SHA1:
case CKSUM_MD5:
bid += 32;
break;
default:
return (0);
}
return (bid);
}
static int
read_toc(struct archive_read *a)
{
struct xar *xar;
struct xar_file *file;
const unsigned char *b;
uint64_t toc_compressed_size;
uint64_t toc_uncompressed_size;
uint32_t toc_chksum_alg;
ssize_t bytes;
int r;
xar = (struct xar *)(a->format->data);
/*
* Read xar header.
*/
b = __archive_read_ahead(a, HEADER_SIZE, &bytes);
if (bytes < 0)
return ((int)bytes);
if (bytes < HEADER_SIZE) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_FILE_FORMAT,
"Truncated archive header");
return (ARCHIVE_FATAL);
}
if (archive_be32dec(b) != HEADER_MAGIC) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_FILE_FORMAT,
"Invalid header magic");
return (ARCHIVE_FATAL);
}
if (archive_be16dec(b+6) != HEADER_VERSION) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_FILE_FORMAT,
"Unsupported header version(%d)",
archive_be16dec(b+6));
return (ARCHIVE_FATAL);
}
toc_compressed_size = archive_be64dec(b+8);
xar->toc_remaining = toc_compressed_size;
toc_uncompressed_size = archive_be64dec(b+16);
toc_chksum_alg = archive_be32dec(b+24);
__archive_read_consume(a, HEADER_SIZE);
xar->offset += HEADER_SIZE;
xar->toc_total = 0;
/*
* Read TOC(Table of Contents).
*/
/* Initialize reading contents. */
r = move_reading_point(a, HEADER_SIZE);
if (r != ARCHIVE_OK)
return (r);
r = rd_contents_init(a, GZIP, toc_chksum_alg, CKSUM_NONE);
if (r != ARCHIVE_OK)
return (r);
#ifdef HAVE_LIBXML_XMLREADER_H
r = xml2_read_toc(a);
#elif defined(HAVE_BSDXML_H) || defined(HAVE_EXPAT_H)
r = expat_read_toc(a);
#endif
if (r != ARCHIVE_OK)
return (r);
/* Set 'The HEAP' base. */
xar->h_base = xar->offset;
if (xar->toc_total != toc_uncompressed_size) {
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"TOC uncompressed size error");
return (ARCHIVE_FATAL);
}
/*
* Checksum TOC
*/
if (toc_chksum_alg != CKSUM_NONE) {
r = move_reading_point(a, xar->toc_chksum_offset);
if (r != ARCHIVE_OK)
return (r);
b = __archive_read_ahead(a, xar->toc_chksum_size, &bytes);
if (bytes < 0)
return ((int)bytes);
if ((uint64_t)bytes < xar->toc_chksum_size) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_FILE_FORMAT,
"Truncated archive file");
return (ARCHIVE_FATAL);
}
r = checksum_final(a, b, xar->toc_chksum_size, NULL, 0);
__archive_read_consume(a, xar->toc_chksum_size);
xar->offset += xar->toc_chksum_size;
if (r != ARCHIVE_OK)
return (ARCHIVE_FATAL);
}
/*
* Connect hardlinked files.
*/
for (file = xar->hdlink_orgs; file != NULL; file = file->hdnext) {
struct hdlink **hdlink;
for (hdlink = &(xar->hdlink_list); *hdlink != NULL;
hdlink = &((*hdlink)->next)) {
if ((*hdlink)->id == file->id) {
struct hdlink *hltmp;
struct xar_file *f2;
int nlink = (*hdlink)->cnt + 1;
file->nlink = nlink;
for (f2 = (*hdlink)->files; f2 != NULL;
f2 = f2->hdnext) {
f2->nlink = nlink;
archive_string_copy(
&(f2->hardlink), &(file->pathname));
}
/* Remove resolved files from hdlist_list. */
hltmp = *hdlink;
*hdlink = hltmp->next;
free(hltmp);
break;
}
}
}
a->archive.archive_format = ARCHIVE_FORMAT_XAR;
a->archive.archive_format_name = "xar";
return (ARCHIVE_OK);
}
static int
xar_read_header(struct archive_read *a, struct archive_entry *entry)
{
struct xar *xar;
struct xar_file *file;
struct xattr *xattr;
int r;
xar = (struct xar *)(a->format->data);
if (xar->offset == 0) {
/* Read TOC. */
r = read_toc(a);
if (r != ARCHIVE_OK)
return (r);
}
for (;;) {
file = xar->file = heap_get_entry(&(xar->file_queue));
if (file == NULL) {
xar->end_of_file = 1;
return (ARCHIVE_EOF);
}
if ((file->mode & AE_IFMT) != AE_IFDIR)
break;
if (file->has != (HAS_PATHNAME | HAS_TYPE))
break;
/*
* If a file type is a directory and it does not have
* any metadata, do not export.
*/
file_free(file);
}
archive_entry_set_atime(entry, file->atime, 0);
archive_entry_set_ctime(entry, file->ctime, 0);
archive_entry_set_mtime(entry, file->mtime, 0);
archive_entry_set_gid(entry, file->gid);
if (file->gname.length > 0)
archive_entry_update_gname_utf8(entry, file->gname.s);
archive_entry_set_uid(entry, file->uid);
if (file->uname.length > 0)
archive_entry_update_uname_utf8(entry, file->uname.s);
archive_entry_set_mode(entry, file->mode);
archive_entry_update_pathname_utf8(entry, file->pathname.s);
if (file->symlink.length > 0)
archive_entry_update_symlink_utf8(entry, file->symlink.s);
/* Set proper nlink. */
if ((file->mode & AE_IFMT) == AE_IFDIR)
archive_entry_set_nlink(entry, file->subdirs + 2);
else
archive_entry_set_nlink(entry, file->nlink);
archive_entry_set_size(entry, file->size);
if (archive_strlen(&(file->hardlink)) > 0)
archive_entry_update_hardlink_utf8(entry,
file->hardlink.s);
archive_entry_set_ino64(entry, file->ino64);
if (file->has & HAS_DEV)
archive_entry_set_dev(entry, file->dev);
if (file->has & HAS_DEVMAJOR)
archive_entry_set_devmajor(entry, file->devmajor);
if (file->has & HAS_DEVMINOR)
archive_entry_set_devminor(entry, file->devminor);
if (archive_strlen(&(file->fflags_text)) > 0)
archive_entry_copy_fflags_text(entry, file->fflags_text.s);
xar->entry_init = 1;
xar->entry_total = 0;
xar->entry_remaining = file->length;
xar->entry_size = file->size;
xar->entry_encoding = file->encoding;
xar->entry_a_sum = file->a_sum;
xar->entry_e_sum = file->e_sum;
/*
* Read extended attributes.
*/
r = ARCHIVE_OK;
xattr = file->xattr_list;
while (xattr != NULL) {
const void *d;
size_t outbytes, used;
r = move_reading_point(a, xattr->offset);
if (r != ARCHIVE_OK)
break;
r = rd_contents_init(a, xattr->encoding,
xattr->a_sum.alg, xattr->e_sum.alg);
if (r != ARCHIVE_OK)
break;
d = NULL;
r = rd_contents(a, &d, &outbytes, &used, xattr->length);
if (r != ARCHIVE_OK)
break;
if (outbytes != xattr->size) {
archive_set_error(&(a->archive), ARCHIVE_ERRNO_MISC,
"Decompressed size error");
r = ARCHIVE_FATAL;
break;
}
r = checksum_final(a,
xattr->a_sum.val, xattr->a_sum.len,
xattr->e_sum.val, xattr->e_sum.len);
if (r != ARCHIVE_OK)
break;
archive_entry_xattr_add_entry(entry,
xattr->name.s, d, outbytes);
xattr = xattr->next;
}
if (r != ARCHIVE_OK) {
file_free(file);
return (r);
}
if (xar->entry_remaining > 0)
/* Move reading point to the beginning of current
* file contents. */
r = move_reading_point(a, file->offset);
else
r = ARCHIVE_OK;
file_free(file);
return (r);
}
static int
xar_read_data(struct archive_read *a,
const void **buff, size_t *size, off_t *offset)
{
struct xar *xar;
size_t used;
int r;
xar = (struct xar *)(a->format->data);
if (xar->end_of_file || xar->entry_remaining <= 0) {
r = ARCHIVE_EOF;
goto abort_read_data;
}
if (xar->entry_init) {
r = rd_contents_init(a, xar->entry_encoding,
xar->entry_a_sum.alg, xar->entry_e_sum.alg);
if (r != ARCHIVE_OK) {
xar->entry_remaining = 0;
return (r);
}
xar->entry_init = 0;
}
*buff = NULL;
r = rd_contents(a, buff, size, &used, xar->entry_remaining);
if (r != ARCHIVE_OK)
goto abort_read_data;
*offset = xar->entry_total;
xar->entry_total += *size;
xar->total += *size;
xar->offset += used;
xar->entry_remaining -= used;
__archive_read_consume(a, used);
if (xar->entry_remaining == 0) {
if (xar->entry_total != xar->entry_size) {
archive_set_error(&(a->archive), ARCHIVE_ERRNO_MISC,
"Decompressed size error");
r = ARCHIVE_FATAL;
goto abort_read_data;
}
r = checksum_final(a,
xar->entry_a_sum.val, xar->entry_a_sum.len,
xar->entry_e_sum.val, xar->entry_e_sum.len);
if (r != ARCHIVE_OK)
goto abort_read_data;
}
return (ARCHIVE_OK);
abort_read_data:
*buff = NULL;
*size = 0;
*offset = xar->total;
return (r);
}
static int
xar_read_data_skip(struct archive_read *a)
{
struct xar *xar;
int64_t bytes_skipped;
xar = (struct xar *)(a->format->data);
if (xar->end_of_file)
return (ARCHIVE_EOF);
bytes_skipped = __archive_read_skip(a, xar->entry_remaining);
if (bytes_skipped < 0)
return (ARCHIVE_FATAL);
xar->offset += bytes_skipped;
return (ARCHIVE_OK);
}
static int
xar_cleanup(struct archive_read *a)
{
struct xar *xar;
struct hdlink *hdlink;
int i;
int r;
xar = (struct xar *)(a->format->data);
r = decompression_cleanup(a);
hdlink = xar->hdlink_list;
while (hdlink != NULL) {
struct hdlink *next = hdlink->next;
free(hdlink);
hdlink = next;
}
for (i = 0; i < xar->file_queue.used; i++)
file_free(xar->file_queue.files[i]);
while (xar->unknowntags != NULL) {
struct unknown_tag *tag;
tag = xar->unknowntags;
xar->unknowntags = tag->next;
archive_string_free(&(tag->name));
free(tag);
}
free(xar);
a->format->data = NULL;
return (r);
}
static int
move_reading_point(struct archive_read *a, uint64_t offset)
{
struct xar *xar;
xar = (struct xar *)(a->format->data);
if (xar->offset - xar->h_base != offset) {
/* Seek forward to the start of file contents. */
int64_t step;
step = offset - (xar->offset - xar->h_base);
if (step > 0) {
step = __archive_read_skip(a, step);
if (step < 0)
return ((int)step);
xar->offset += step;
} else {
archive_set_error(&(a->archive),
ARCHIVE_ERRNO_MISC,
"Cannot seek.");
return (ARCHIVE_FAILED);
}
}
return (ARCHIVE_OK);
}
static int
rd_contents_init(struct archive_read *a, enum enctype encoding,
int a_sum_alg, int e_sum_alg)
{
int r;
/* Init decompress library. */
if ((r = decompression_init(a, encoding)) != ARCHIVE_OK)
return (r);
/* Init checksum library. */
checksum_init(a, a_sum_alg, e_sum_alg);
return (ARCHIVE_OK);
}
static int
rd_contents(struct archive_read *a, const void **buff, size_t *size,
size_t *used, uint64_t remaining)
{
const unsigned char *b;
ssize_t bytes;
/* Get whatever bytes are immediately available. */
b = __archive_read_ahead(a, 1, &bytes);
if (bytes < 0)
return ((int)bytes);
if (bytes == 0) {
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"Truncated archive file");
return (ARCHIVE_FATAL);
}
if ((uint64_t)bytes > remaining)
bytes = (ssize_t)remaining;
/*
* Decompress contents of file.
*/
*used = bytes;
if (decompress(a, buff, size, b, used) != ARCHIVE_OK)
return (ARCHIVE_FATAL);
/*
* Update checksum of a compressed data and a extracted data.
*/
checksum_update(a, b, *used, *buff, *size);
return (ARCHIVE_OK);
}
/*
* Note that this implementation does not (and should not!) obey
* locale settings; you cannot simply substitute strtol here, since
* it does obey locale.
*/
static uint64_t
atol10(const char *p, size_t char_cnt)
{
uint64_t l;
int digit;
l = 0;
digit = *p - '0';
while (digit >= 0 && digit < 10 && char_cnt-- > 0) {
l = (l * 10) + digit;
digit = *++p - '0';
}
return (l);
}
static int64_t
atol8(const char *p, size_t char_cnt)
{
int64_t l;
int digit;
l = 0;
while (char_cnt-- > 0) {
if (*p >= '0' && *p <= '7')
digit = *p - '0';
else
break;
p++;
l <<= 3;
l |= digit;
}
return (l);
}
static size_t
atohex(unsigned char *b, size_t bsize, const char *p, size_t psize)
{
size_t fbsize = bsize;
while (bsize && psize > 1) {
unsigned char x;
if (p[0] >= 'a' && p[0] <= 'z')
x = (p[0] - 'a' + 0x0a) << 4;
else if (p[0] >= 'A' && p[0] <= 'Z')
x = (p[0] - 'A' + 0x0a) << 4;
else if (p[0] >= '0' && p[0] <= '9')
x = (p[0] - '0') << 4;
else
return (-1);
if (p[1] >= 'a' && p[1] <= 'z')
x |= p[1] - 'a' + 0x0a;
else if (p[1] >= 'A' && p[1] <= 'Z')
x |= p[1] - 'A' + 0x0a;
else if (p[1] >= '0' && p[1] <= '9')
x |= p[1] - '0';
else
return (-1);
*b++ = x;
bsize--;
p += 2;
psize -= 2;
}
return (fbsize - bsize);
}
static time_t
time_from_tm(struct tm *t)
{
#if HAVE_TIMEGM
/* Use platform timegm() if available. */
return (timegm(t));
#else
/* Else use direct calculation using POSIX assumptions. */
/* First, fix up tm_yday based on the year/month/day. */
mktime(t);
/* Then we can compute timegm() from first principles. */
return (t->tm_sec + t->tm_min * 60 + t->tm_hour * 3600
+ t->tm_yday * 86400 + (t->tm_year - 70) * 31536000
+ ((t->tm_year - 69) / 4) * 86400 -
((t->tm_year - 1) / 100) * 86400
+ ((t->tm_year + 299) / 400) * 86400);
#endif
}
static time_t
parse_time(const char *p, size_t n)
{
struct tm tm;
time_t t = 0;
int64_t data;
memset(&tm, 0, sizeof(tm));
if (n != 20)
return (t);
data = atol10(p, 4);
if (data < 1900)
return (t);
tm.tm_year = (int)data - 1900;
p += 4;
if (*p++ != '-')
return (t);
data = atol10(p, 2);
if (data < 1 || data > 12)
return (t);
tm.tm_mon = (int)data -1;
p += 2;
if (*p++ != '-')
return (t);
data = atol10(p, 2);
if (data < 1 || data > 31)
return (t);
tm.tm_mday = (int)data;
p += 2;
if (*p++ != 'T')
return (t);
data = atol10(p, 2);
if (data < 0 || data > 23)
return (t);
tm.tm_hour = (int)data;
p += 2;
if (*p++ != ':')
return (t);
data = atol10(p, 2);
if (data < 0 || data > 59)
return (t);
tm.tm_min = (int)data;
p += 2;
if (*p++ != ':')
return (t);
data = atol10(p, 2);
if (data < 0 || data > 60)
return (t);
tm.tm_sec = (int)data;
#if 0
p += 2;
if (*p != 'Z')
return (t);
#endif
t = time_from_tm(&tm);
return (t);
}
static void
heap_add_entry(struct heap_queue *heap, struct xar_file *file)
{
uint64_t file_id, parent_id;
int hole, parent;
/* Expand our pending files list as necessary. */
if (heap->used >= heap->allocated) {
struct xar_file **new_pending_files;
int new_size = heap->allocated * 2;
if (heap->allocated < 1024)
new_size = 1024;
/* Overflow might keep us from growing the list. */
if (new_size <= heap->allocated)
__archive_errx(1, "Out of memory");
new_pending_files = (struct xar_file **)
malloc(new_size * sizeof(new_pending_files[0]));
if (new_pending_files == NULL)
__archive_errx(1, "Out of memory");
memcpy(new_pending_files, heap->files,
heap->allocated * sizeof(new_pending_files[0]));
if (heap->files != NULL)
free(heap->files);
heap->files = new_pending_files;
heap->allocated = new_size;
}
file_id = file->id;
/*
* Start with hole at end, walk it up tree to find insertion point.
*/
hole = heap->used++;
while (hole > 0) {
parent = (hole - 1)/2;
parent_id = heap->files[parent]->id;
if (file_id >= parent_id) {
heap->files[hole] = file;
return;
}
// Move parent into hole <==> move hole up tree.
heap->files[hole] = heap->files[parent];
hole = parent;
}
heap->files[0] = file;
}
static struct xar_file *
heap_get_entry(struct heap_queue *heap)
{
uint64_t a_id, b_id, c_id;
int a, b, c;
struct xar_file *r, *tmp;
if (heap->used < 1)
return (NULL);
/*
* The first file in the list is the earliest; we'll return this.
*/
r = heap->files[0];
/*
* Move the last item in the heap to the root of the tree
*/
heap->files[0] = heap->files[--(heap->used)];
/*
* Rebalance the heap.
*/
a = 0; // Starting element and its heap key
a_id = heap->files[a]->id;
for (;;) {
b = a + a + 1; // First child
if (b >= heap->used)
return (r);
b_id = heap->files[b]->id;
c = b + 1; // Use second child if it is smaller.
if (c < heap->used) {
c_id = heap->files[c]->id;
if (c_id < b_id) {
b = c;
b_id = c_id;
}
}
if (a_id <= b_id)
return (r);
tmp = heap->files[a];
heap->files[a] = heap->files[b];
heap->files[b] = tmp;
a = b;
}
}
static void
add_link(struct xar *xar, struct xar_file *file)
{
struct hdlink *hdlink;
for (hdlink = xar->hdlink_list; hdlink != NULL; hdlink = hdlink->next) {
if (hdlink->id == file->link) {
file->hdnext = hdlink->files;
hdlink->cnt++;
hdlink->files = file;
return;
}
}
hdlink = malloc(sizeof(*hdlink));
if (hdlink == NULL)
__archive_errx(1, "No memory for add_link()");
file->hdnext = NULL;
hdlink->id = file->link;
hdlink->cnt = 1;
hdlink->files = file;
hdlink->next = xar->hdlink_list;
xar->hdlink_list = hdlink;
}
static void
_checksum_init(struct chksumwork *sumwrk, int sum_alg)
{
sumwrk->alg = sum_alg;
switch (sum_alg) {
case CKSUM_NONE:
break;
case CKSUM_SHA1:
archive_sha1_init(&(sumwrk->sha1ctx));
break;
case CKSUM_MD5:
archive_md5_init(&(sumwrk->md5ctx));
break;
}
}
static void
_checksum_update(struct chksumwork *sumwrk, const void *buff, size_t size)
{
switch (sumwrk->alg) {
case CKSUM_NONE:
break;
case CKSUM_SHA1:
archive_sha1_update(&(sumwrk->sha1ctx), buff, size);
break;
case CKSUM_MD5:
archive_md5_update(&(sumwrk->md5ctx), buff, size);
break;
}
}
static int
_checksum_final(struct chksumwork *sumwrk, const void *val, size_t len)
{
unsigned char sum[MAX_SUM_SIZE];
int r = ARCHIVE_OK;
switch (sumwrk->alg) {
case CKSUM_NONE:
break;
case CKSUM_SHA1:
archive_sha1_final(&(sumwrk->sha1ctx), sum);
if (len != SHA1_SIZE ||
memcmp(val, sum, SHA1_SIZE) != 0)
r = ARCHIVE_FAILED;
break;
case CKSUM_MD5:
archive_md5_final(&(sumwrk->md5ctx), sum);
if (len != MD5_SIZE ||
memcmp(val, sum, MD5_SIZE) != 0)
r = ARCHIVE_FAILED;
break;
}
return (r);
}
static void
checksum_init(struct archive_read *a, int a_sum_alg, int e_sum_alg)
{
struct xar *xar;
xar = (struct xar *)(a->format->data);
_checksum_init(&(xar->a_sumwrk), a_sum_alg);
_checksum_init(&(xar->e_sumwrk), e_sum_alg);
}
static void
checksum_update(struct archive_read *a, const void *abuff, size_t asize,
const void *ebuff, size_t esize)
{
struct xar *xar;
xar = (struct xar *)(a->format->data);
_checksum_update(&(xar->a_sumwrk), abuff, asize);
_checksum_update(&(xar->e_sumwrk), ebuff, esize);
}
static int
checksum_final(struct archive_read *a, const void *a_sum_val,
size_t a_sum_len, const void *e_sum_val, size_t e_sum_len)
{
struct xar *xar;
int r;
xar = (struct xar *)(a->format->data);
r = _checksum_final(&(xar->a_sumwrk), a_sum_val, a_sum_len);
if (r == ARCHIVE_OK)
r = _checksum_final(&(xar->e_sumwrk), e_sum_val, e_sum_len);
if (r != ARCHIVE_OK)
archive_set_error(&(a->archive), ARCHIVE_ERRNO_MISC,
"Sumcheck error");
return (r);
}
static int
decompression_init(struct archive_read *a, enum enctype encoding)
{
struct xar *xar;
const char *detail;
int r;
xar = (struct xar *)(a->format->data);
xar->rd_encoding = encoding;
switch (encoding) {
case NONE:
break;
case GZIP:
if (xar->stream_valid)
r = inflateReset(&(xar->stream));
else
r = inflateInit(&(xar->stream));
if (r != Z_OK) {
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"Couldn't initialize zlib stream.");
return (ARCHIVE_FATAL);
}
xar->stream_valid = 1;
xar->stream.total_in = 0;
xar->stream.total_out = 0;
break;
#ifdef HAVE_BZLIB_H
case BZIP2:
if (xar->bzstream_valid) {
BZ2_bzDecompressEnd(&(xar->bzstream));
xar->bzstream_valid = 0;
}
r = BZ2_bzDecompressInit(&(xar->bzstream), 0, 0);
if (r == BZ_MEM_ERROR)
r = BZ2_bzDecompressInit(&(xar->bzstream), 0, 1);
if (r != BZ_OK) {
int err = ARCHIVE_ERRNO_MISC;
detail = NULL;
switch (r) {
case BZ_PARAM_ERROR:
detail = "invalid setup parameter";
break;
case BZ_MEM_ERROR:
err = ENOMEM;
detail = "out of memory";
break;
case BZ_CONFIG_ERROR:
detail = "mis-compiled library";
break;
}
archive_set_error(&a->archive, err,
"Internal error initializing decompressor: %s",
detail == NULL ? "??" : detail);
xar->bzstream_valid = 0;
return (ARCHIVE_FATAL);
}
xar->bzstream_valid = 1;
xar->bzstream.total_in_lo32 = 0;
xar->bzstream.total_in_hi32 = 0;
xar->bzstream.total_out_lo32 = 0;
xar->bzstream.total_out_hi32 = 0;
break;
#endif
#if defined(HAVE_LZMA_H) && defined(HAVE_LIBLZMA)
case XZ:
case LZMA:
if (xar->lzstream_valid) {
lzma_end(&(xar->lzstream));
xar->lzstream_valid = 0;
}
if (xar->entry_encoding == XZ)
r = lzma_stream_decoder(&(xar->lzstream),
(1U << 30),/* memlimit */
LZMA_CONCATENATED);
else
r = lzma_alone_decoder(&(xar->lzstream),
(1U << 30));/* memlimit */
if (r != LZMA_OK) {
switch (r) {
case LZMA_MEM_ERROR:
archive_set_error(&a->archive,
ENOMEM,
"Internal error initializing "
"compression library: "
"Cannot allocate memory");
break;
case LZMA_OPTIONS_ERROR:
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"Internal error initializing "
"compression library: "
"Invalid or unsupported options");
break;
default:
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"Internal error initializing "
"lzma library");
break;
}
return (ARCHIVE_FATAL);
}
xar->lzstream_valid = 1;
xar->lzstream.total_in = 0;
xar->lzstream.total_out = 0;
break;
#elif defined(HAVE_LZMADEC_H) && defined(HAVE_LIBLZMADEC)
case LZMA:
if (xar->lzstream_valid)
lzmadec_end(&(xar->lzstream));
r = lzmadec_init(&(xar->lzstream));
if (r != LZMADEC_OK) {
switch (r) {
case LZMADEC_HEADER_ERROR:
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"Internal error initializing "
"compression library: "
"invalid header");
break;
case LZMADEC_MEM_ERROR:
archive_set_error(&a->archive,
ENOMEM,
"Internal error initializing "
"compression library: "
"out of memory");
break;
}
return (ARCHIVE_FATAL);
}
xar->lzstream_valid = 1;
xar->lzstream.total_in = 0;
xar->lzstream.total_out = 0;
break;
#endif
/*
* Unsupported compression.
*/
default:
#ifndef HAVE_BZLIB_H
case BZIP2:
#endif
#if !defined(HAVE_LZMA_H) || !defined(HAVE_LIBLZMA)
#if !defined(HAVE_LZMADEC_H) || !defined(HAVE_LIBLZMADEC)
case LZMA:
#endif
case XZ:
#endif
switch (xar->entry_encoding) {
case BZIP2: detail = "bzip2"; break;
case LZMA: detail = "lzma"; break;
case XZ: detail = "xz"; break;
default: detail = "??"; break;
}
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"%s compression not supported on this platform",
detail);
return (ARCHIVE_FAILED);
}
return (ARCHIVE_OK);
}
static int
decompress(struct archive_read *a, const void **buff, size_t *outbytes,
const void *b, size_t *used)
{
struct xar *xar;
void *outbuff;
size_t avail_in, avail_out;
int r;
xar = (struct xar *)(a->format->data);
avail_in = *used;
outbuff = (void *)(uintptr_t)*buff;
if (outbuff == NULL) {
outbuff = xar->buff;
*buff = outbuff;
avail_out = sizeof(xar->buff);
} else
avail_out = *outbytes;
switch (xar->rd_encoding) {
case GZIP:
xar->stream.next_in = (Bytef *)(uintptr_t)b;
xar->stream.avail_in = avail_in;
xar->stream.next_out = (unsigned char *)outbuff;
xar->stream.avail_out = avail_out;
r = inflate(&(xar->stream), 0);
switch (r) {
case Z_OK: /* Decompressor made some progress.*/
case Z_STREAM_END: /* Found end of stream. */
break;
default:
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"File decompression failed (%d)", r);
return (ARCHIVE_FATAL);
}
*used = avail_in - xar->stream.avail_in;
*outbytes = avail_out - xar->stream.avail_out;
break;
#ifdef HAVE_BZLIB_H
case BZIP2:
xar->bzstream.next_in = (char *)(uintptr_t)b;
xar->bzstream.avail_in = avail_in;
xar->bzstream.next_out = (char *)outbuff;
xar->bzstream.avail_out = avail_out;
r = BZ2_bzDecompress(&(xar->bzstream));
switch (r) {
case BZ_STREAM_END: /* Found end of stream. */
switch (BZ2_bzDecompressEnd(&(xar->bzstream))) {
case BZ_OK:
break;
default:
archive_set_error(&(a->archive),
ARCHIVE_ERRNO_MISC,
"Failed to clean up decompressor");
return (ARCHIVE_FATAL);
}
xar->bzstream_valid = 0;
/* FALLTHROUGH */
case BZ_OK: /* Decompressor made some progress. */
break;
default:
archive_set_error(&(a->archive),
ARCHIVE_ERRNO_MISC,
"bzip decompression failed");
return (ARCHIVE_FATAL);
}
*used = avail_in - xar->bzstream.avail_in;
*outbytes = avail_out - xar->bzstream.avail_out;
break;
#endif
#if defined(HAVE_LZMA_H) && defined(HAVE_LIBLZMA)
case LZMA:
case XZ:
xar->lzstream.next_in = b;
xar->lzstream.avail_in = avail_in;
xar->lzstream.next_out = (unsigned char *)outbuff;
xar->lzstream.avail_out = avail_out;
r = lzma_code(&(xar->lzstream), LZMA_RUN);
switch (r) {
case LZMA_STREAM_END: /* Found end of stream. */
lzma_end(&(xar->lzstream));
xar->lzstream_valid = 0;
/* FALLTHROUGH */
case LZMA_OK: /* Decompressor made some progress. */
break;
default:
archive_set_error(&(a->archive),
ARCHIVE_ERRNO_MISC,
"%s decompression failed(%d)",
(xar->entry_encoding == XZ)?"xz":"lzma",
r);
return (ARCHIVE_FATAL);
}
*used = avail_in - xar->lzstream.avail_in;
*outbytes = avail_out - xar->lzstream.avail_out;
break;
#elif defined(HAVE_LZMADEC_H) && defined(HAVE_LIBLZMADEC)
case LZMA:
xar->lzstream.next_in = (unsigned char *)(uintptr_t)b;
xar->lzstream.avail_in = avail_in;
xar->lzstream.next_out = (unsigned char *)outbuff;
xar->lzstream.avail_out = avail_out;
r = lzmadec_decode(&(xar->lzstream), 0);
switch (r) {
case LZMADEC_STREAM_END: /* Found end of stream. */
switch (lzmadec_end(&(xar->lzstream))) {
case LZMADEC_OK:
break;
default:
archive_set_error(&(a->archive),
ARCHIVE_ERRNO_MISC,
"Failed to clean up lzmadec decompressor");
return (ARCHIVE_FATAL);
}
xar->lzstream_valid = 0;
/* FALLTHROUGH */
case LZMADEC_OK: /* Decompressor made some progress. */
break;
default:
archive_set_error(&(a->archive),
ARCHIVE_ERRNO_MISC,
"lzmadec decompression failed(%d)",
r);
return (ARCHIVE_FATAL);
}
*used = avail_in - xar->lzstream.avail_in;
*outbytes = avail_out - xar->lzstream.avail_out;
break;
#endif
#ifndef HAVE_BZLIB_H
case BZIP2:
#endif
#if !defined(HAVE_LZMA_H) || !defined(HAVE_LIBLZMA)
#if !defined(HAVE_LZMADEC_H) || !defined(HAVE_LIBLZMADEC)
case LZMA:
#endif
case XZ:
#endif
case NONE:
default:
if (outbuff == xar->buff) {
*buff = b;
*used = avail_in;
*outbytes = avail_in;
} else {
if (avail_out > avail_in)
avail_out = avail_in;
memcpy(outbuff, b, avail_out);
*used = avail_out;
*outbytes = avail_out;
}
break;
}
return (ARCHIVE_OK);
}
static int
decompression_cleanup(struct archive_read *a)
{
struct xar *xar;
int r;
xar = (struct xar *)(a->format->data);
r = ARCHIVE_OK;
if (xar->stream_valid) {
if (inflateEnd(&(xar->stream)) != Z_OK) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"Failed to clean up zlib decompressor");
r = ARCHIVE_FATAL;
}
}
#ifdef HAVE_BZLIB_H
if (xar->bzstream_valid) {
if (BZ2_bzDecompressEnd(&(xar->bzstream)) != BZ_OK) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"Failed to clean up bzip2 decompressor");
r = ARCHIVE_FATAL;
}
}
#endif
#if defined(HAVE_LZMA_H) && defined(HAVE_LIBLZMA)
if (xar->lzstream_valid)
lzma_end(&(xar->lzstream));
#elif defined(HAVE_LZMA_H) && defined(HAVE_LIBLZMA)
if (xar->lzstream_valid) {
if (lzmadec_end(&(xar->lzstream)) != LZMADEC_OK) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"Failed to clean up lzmadec decompressor");
r = ARCHIVE_FATAL;
}
}
#endif
return (r);
}
static void
xmlattr_cleanup(struct xmlattr_list *list)
{
struct xmlattr *attr, *next;
attr = list->first;
while (attr != NULL) {
next = attr->next;
free(attr->name);
free(attr->value);
free(attr);
attr = next;
}
list->first = NULL;
list->last = &(list->first);
}
static void
file_new(struct xar *xar, struct xmlattr_list *list)
{
struct xar_file *file;
struct xmlattr *attr;
file = calloc(1, sizeof(*file));
if (file == NULL)
__archive_errx(1, "Out of memory");
file->parent = xar->file;
file->mode = 0777 | AE_IFREG;
file->atime = time(NULL);
file->mtime = time(NULL);
xar->file = file;
xar->xattr = NULL;
for (attr = list->first; attr != NULL; attr = attr->next) {
if (strcmp(attr->name, "id") == 0)
file->id = atol10(attr->value, strlen(attr->value));
}
file->nlink = 1;
heap_add_entry(&(xar->file_queue), file);
}
static void
file_free(struct xar_file *file)
{
struct xattr *xattr;
archive_string_free(&(file->pathname));
archive_string_free(&(file->symlink));
archive_string_free(&(file->uname));
archive_string_free(&(file->gname));
archive_string_free(&(file->hardlink));
xattr = file->xattr_list;
while (xattr != NULL) {
struct xattr *next;
next = xattr->next;
xattr_free(xattr);
xattr = next;
}
free(file);
}
static void
xattr_new(struct xar *xar, struct xmlattr_list *list)
{
struct xattr *xattr, **nx;
struct xmlattr *attr;
xattr = calloc(1, sizeof(*xattr));
if (xattr == NULL)
__archive_errx(1, "Out of memory");
xar->xattr = xattr;
for (attr = list->first; attr != NULL; attr = attr->next) {
if (strcmp(attr->name, "id") == 0)
xattr->id = atol10(attr->value, strlen(attr->value));
}
/* Chain to xattr list. */
for (nx = &(xar->file->xattr_list);
*nx != NULL; nx = &((*nx)->next)) {
if (xattr->id < (*nx)->id)
break;
}
xattr->next = *nx;
*nx = xattr;
}
static void
xattr_free(struct xattr *xattr)
{
archive_string_free(&(xattr->name));
free(xattr);
}
static int
getencoding(struct xmlattr_list *list)
{
struct xmlattr *attr;
enum enctype encoding = NONE;
for (attr = list->first; attr != NULL; attr = attr->next) {
if (strcmp(attr->name, "style") == 0) {
if (strcmp(attr->value, "application/octet-stream") == 0)
encoding = NONE;
else if (strcmp(attr->value, "application/x-gzip") == 0)
encoding = GZIP;
else if (strcmp(attr->value, "application/x-bzip2") == 0)
encoding = BZIP2;
else if (strcmp(attr->value, "application/x-lzma") == 0)
encoding = LZMA;
else if (strcmp(attr->value, "application/x-xz") == 0)
encoding = XZ;
}
}
return (encoding);
}
static int
getsumalgorithm(struct xmlattr_list *list)
{
struct xmlattr *attr;
int alg = CKSUM_NONE;
for (attr = list->first; attr != NULL; attr = attr->next) {
if (strcmp(attr->name, "style") == 0) {
const char *v = attr->value;
if ((v[0] == 'S' || v[0] == 's') &&
(v[1] == 'H' || v[1] == 'h') &&
(v[2] == 'A' || v[2] == 'a') &&
v[3] == '1' && v[4] == '\0')
alg = CKSUM_SHA1;
if ((v[0] == 'M' || v[0] == 'm') &&
(v[1] == 'D' || v[1] == 'd') &&
v[2] == '5' && v[3] == '\0')
alg = CKSUM_MD5;
}
}
return (alg);
}
static void
unknowntag_start(struct xar *xar, const char *name)
{
struct unknown_tag *tag;
#if DEBUG
fprintf(stderr, "unknowntag_start:%s\n", name);
#endif
tag = malloc(sizeof(*tag));
if (tag == NULL)
__archive_errx(1, "Out of memory");
tag->next = xar->unknowntags;
archive_string_init(&(tag->name));
archive_strcpy(&(tag->name), name);
if (xar->unknowntags == NULL) {
xar->xmlsts_unknown = xar->xmlsts;
xar->xmlsts = UNKNOWN;
}
xar->unknowntags = tag;
}
static void
unknowntag_end(struct xar *xar, const char *name)
{
struct unknown_tag *tag;
#if DEBUG
fprintf(stderr, "unknowntag_end:%s\n", name);
#endif
tag = xar->unknowntags;
if (tag == NULL || name == NULL)
return;
if (strcmp(tag->name.s, name) == 0) {
xar->unknowntags = tag->next;
archive_string_free(&(tag->name));
free(tag);
if (xar->unknowntags == NULL)
xar->xmlsts = xar->xmlsts_unknown;
}
}
static void
xml_start(void *userData, const char *name, struct xmlattr_list *list)
{
struct archive_read *a;
struct xar *xar;
struct xmlattr *attr;
a = (struct archive_read *)userData;
xar = (struct xar *)(a->format->data);
#if DEBUG
fprintf(stderr, "xml_sta:[%s]\n", name);
for (attr = list->first; attr != NULL; attr = attr->next)
fprintf(stderr, " attr:\"%s\"=\"%s\"\n",
attr->name, attr->value);
#endif
xar->base64text = 0;
switch (xar->xmlsts) {
case INIT:
if (strcmp(name, "xar") == 0)
xar->xmlsts = XAR;
else
unknowntag_start(xar, name);
break;
case XAR:
if (strcmp(name, "toc") == 0)
xar->xmlsts = TOC;
else
unknowntag_start(xar, name);
break;
case TOC:
if (strcmp(name, "creation-time") == 0)
xar->xmlsts = TOC_CREATION_TIME;
else if (strcmp(name, "checksum") == 0)
xar->xmlsts = TOC_CHECKSUM;
else if (strcmp(name, "file") == 0) {
file_new(xar, list);
xar->xmlsts = TOC_FILE;
}
else
unknowntag_start(xar, name);
break;
case TOC_CHECKSUM:
if (strcmp(name, "offset") == 0)
xar->xmlsts = TOC_CHECKSUM_OFFSET;
else if (strcmp(name, "size") == 0)
xar->xmlsts = TOC_CHECKSUM_SIZE;
else
unknowntag_start(xar, name);
break;
case TOC_FILE:
if (strcmp(name, "file") == 0) {
file_new(xar, list);
}
else if (strcmp(name, "data") == 0)
xar->xmlsts = FILE_DATA;
else if (strcmp(name, "ea") == 0) {
xattr_new(xar, list);
xar->xmlsts = FILE_EA;
}
else if (strcmp(name, "ctime") == 0)
xar->xmlsts = FILE_CTIME;
else if (strcmp(name, "mtime") == 0)
xar->xmlsts = FILE_MTIME;
else if (strcmp(name, "atime") == 0)
xar->xmlsts = FILE_ATIME;
else if (strcmp(name, "group") == 0)
xar->xmlsts = FILE_GROUP;
else if (strcmp(name, "gid") == 0)
xar->xmlsts = FILE_GID;
else if (strcmp(name, "user") == 0)
xar->xmlsts = FILE_USER;
else if (strcmp(name, "uid") == 0)
xar->xmlsts = FILE_UID;
else if (strcmp(name, "mode") == 0)
xar->xmlsts = FILE_MODE;
else if (strcmp(name, "device") == 0)
xar->xmlsts = FILE_DEVICE;
else if (strcmp(name, "deviceno") == 0)
xar->xmlsts = FILE_DEVICENO;
else if (strcmp(name, "inode") == 0)
xar->xmlsts = FILE_INODE;
else if (strcmp(name, "link") == 0)
xar->xmlsts = FILE_LINK;
else if (strcmp(name, "type") == 0) {
xar->xmlsts = FILE_TYPE;
for (attr = list->first; attr != NULL;
attr = attr->next) {
if (strcmp(attr->name, "link") != 0)
continue;
if (strcmp(attr->value, "original") == 0) {
xar->file->hdnext = xar->hdlink_orgs;
xar->hdlink_orgs = xar->file;
} else {
xar->file->link = atol10(attr->value,
strlen(attr->value));
if (xar->file->link > 0)
add_link(xar, xar->file);
}
}
}
else if (strcmp(name, "name") == 0) {
xar->xmlsts = FILE_NAME;
for (attr = list->first; attr != NULL;
attr = attr->next) {
if (strcmp(attr->name, "enctype") == 0 &&
strcmp(attr->value, "base64") == 0)
xar->base64text = 1;
}
}
else if (strcmp(name, "acl") == 0)
xar->xmlsts = FILE_ACL;
else if (strcmp(name, "flags") == 0)
xar->xmlsts = FILE_FLAGS;
else if (strcmp(name, "ext2") == 0)
xar->xmlsts = FILE_EXT2;
else
unknowntag_start(xar, name);
break;
case FILE_DATA:
if (strcmp(name, "length") == 0)
xar->xmlsts = FILE_DATA_LENGTH;
else if (strcmp(name, "offset") == 0)
xar->xmlsts = FILE_DATA_OFFSET;
else if (strcmp(name, "size") == 0)
xar->xmlsts = FILE_DATA_SIZE;
else if (strcmp(name, "encoding") == 0) {
xar->xmlsts = FILE_DATA_ENCODING;
xar->file->encoding = getencoding(list);
}
else if (strcmp(name, "archived-checksum") == 0) {
xar->xmlsts = FILE_DATA_A_CHECKSUM;
xar->file->a_sum.alg = getsumalgorithm(list);
}
else if (strcmp(name, "extracted-checksum") == 0) {
xar->xmlsts = FILE_DATA_E_CHECKSUM;
xar->file->e_sum.alg = getsumalgorithm(list);
}
else if (strcmp(name, "content") == 0)
xar->xmlsts = FILE_DATA_CONTENT;
else
unknowntag_start(xar, name);
break;
case FILE_DEVICE:
if (strcmp(name, "major") == 0)
xar->xmlsts = FILE_DEVICE_MAJOR;
else if (strcmp(name, "minor") == 0)
xar->xmlsts = FILE_DEVICE_MINOR;
else
unknowntag_start(xar, name);
break;
case FILE_DATA_CONTENT:
unknowntag_start(xar, name);
break;
case FILE_EA:
if (strcmp(name, "length") == 0)
xar->xmlsts = FILE_EA_LENGTH;
else if (strcmp(name, "offset") == 0)
xar->xmlsts = FILE_EA_OFFSET;
else if (strcmp(name, "size") == 0)
xar->xmlsts = FILE_EA_SIZE;
else if (strcmp(name, "encoding") == 0) {
xar->xmlsts = FILE_EA_ENCODING;
xar->xattr->encoding = getencoding(list);
} else if (strcmp(name, "archived-checksum") == 0)
xar->xmlsts = FILE_EA_A_CHECKSUM;
else if (strcmp(name, "extracted-checksum") == 0)
xar->xmlsts = FILE_EA_E_CHECKSUM;
else if (strcmp(name, "name") == 0)
xar->xmlsts = FILE_EA_NAME;
else if (strcmp(name, "fstype") == 0)
xar->xmlsts = FILE_EA_FSTYPE;
else
unknowntag_start(xar, name);
break;
case FILE_ACL:
if (strcmp(name, "appleextended") == 0)
xar->xmlsts = FILE_ACL_APPLEEXTENDED;
if (strcmp(name, "default") == 0)
xar->xmlsts = FILE_ACL_DEFAULT;
else if (strcmp(name, "access") == 0)
xar->xmlsts = FILE_ACL_ACCESS;
else
unknowntag_start(xar, name);
break;
case FILE_FLAGS:
if (!xml_parse_file_flags(xar, name))
unknowntag_start(xar, name);
break;
case FILE_EXT2:
if (!xml_parse_file_ext2(xar, name))
unknowntag_start(xar, name);
break;
case TOC_CREATION_TIME:
case TOC_CHECKSUM_OFFSET:
case TOC_CHECKSUM_SIZE:
case FILE_DATA_LENGTH:
case FILE_DATA_OFFSET:
case FILE_DATA_SIZE:
case FILE_DATA_ENCODING:
case FILE_DATA_A_CHECKSUM:
case FILE_DATA_E_CHECKSUM:
case FILE_EA_LENGTH:
case FILE_EA_OFFSET:
case FILE_EA_SIZE:
case FILE_EA_ENCODING:
case FILE_EA_A_CHECKSUM:
case FILE_EA_E_CHECKSUM:
case FILE_EA_NAME:
case FILE_EA_FSTYPE:
case FILE_CTIME:
case FILE_MTIME:
case FILE_ATIME:
case FILE_GROUP:
case FILE_GID:
case FILE_USER:
case FILE_UID:
case FILE_INODE:
case FILE_DEVICE_MAJOR:
case FILE_DEVICE_MINOR:
case FILE_DEVICENO:
case FILE_MODE:
case FILE_TYPE:
case FILE_LINK:
case FILE_NAME:
case FILE_ACL_DEFAULT:
case FILE_ACL_ACCESS:
case FILE_ACL_APPLEEXTENDED:
case FILE_FLAGS_USER_NODUMP:
case FILE_FLAGS_USER_IMMUTABLE:
case FILE_FLAGS_USER_APPEND:
case FILE_FLAGS_USER_OPAQUE:
case FILE_FLAGS_USER_NOUNLINK:
case FILE_FLAGS_SYS_ARCHIVED:
case FILE_FLAGS_SYS_IMMUTABLE:
case FILE_FLAGS_SYS_APPEND:
case FILE_FLAGS_SYS_NOUNLINK:
case FILE_FLAGS_SYS_SNAPSHOT:
case FILE_EXT2_SecureDeletion:
case FILE_EXT2_Undelete:
case FILE_EXT2_Compress:
case FILE_EXT2_Synchronous:
case FILE_EXT2_Immutable:
case FILE_EXT2_AppendOnly:
case FILE_EXT2_NoDump:
case FILE_EXT2_NoAtime:
case FILE_EXT2_CompDirty:
case FILE_EXT2_CompBlock:
case FILE_EXT2_NoCompBlock:
case FILE_EXT2_CompError:
case FILE_EXT2_BTree:
case FILE_EXT2_HashIndexed:
case FILE_EXT2_iMagic:
case FILE_EXT2_Journaled:
case FILE_EXT2_NoTail:
case FILE_EXT2_DirSync:
case FILE_EXT2_TopDir:
case FILE_EXT2_Reserved:
case UNKNOWN:
unknowntag_start(xar, name);
break;
}
}
static void
xml_end(void *userData, const char *name)
{
struct archive_read *a;
struct xar *xar;
a = (struct archive_read *)userData;
xar = (struct xar *)(a->format->data);
#if DEBUG
fprintf(stderr, "xml_end:[%s]\n", name);
#endif
switch (xar->xmlsts) {
case INIT:
break;
case XAR:
if (strcmp(name, "xar") == 0)
xar->xmlsts = INIT;
break;
case TOC:
if (strcmp(name, "toc") == 0)
xar->xmlsts = XAR;
break;
case TOC_CREATION_TIME:
if (strcmp(name, "creation-time") == 0)
xar->xmlsts = TOC;
break;
case TOC_CHECKSUM:
if (strcmp(name, "checksum") == 0)
xar->xmlsts = TOC;
break;
case TOC_CHECKSUM_OFFSET:
if (strcmp(name, "offset") == 0)
xar->xmlsts = TOC_CHECKSUM;
break;
case TOC_CHECKSUM_SIZE:
if (strcmp(name, "size") == 0)
xar->xmlsts = TOC_CHECKSUM;
break;
case TOC_FILE:
if (strcmp(name, "file") == 0) {
if (xar->file->parent != NULL &&
((xar->file->mode & AE_IFMT) == AE_IFDIR))
xar->file->parent->subdirs++;
xar->file = xar->file->parent;
if (xar->file == NULL)
xar->xmlsts = TOC;
}
break;
case FILE_DATA:
if (strcmp(name, "data") == 0)
xar->xmlsts = TOC_FILE;
break;
case FILE_DATA_LENGTH:
if (strcmp(name, "length") == 0)
xar->xmlsts = FILE_DATA;
break;
case FILE_DATA_OFFSET:
if (strcmp(name, "offset") == 0)
xar->xmlsts = FILE_DATA;
break;
case FILE_DATA_SIZE:
if (strcmp(name, "size") == 0)
xar->xmlsts = FILE_DATA;
break;
case FILE_DATA_ENCODING:
if (strcmp(name, "encoding") == 0)
xar->xmlsts = FILE_DATA;
break;
case FILE_DATA_A_CHECKSUM:
if (strcmp(name, "archived-checksum") == 0)
xar->xmlsts = FILE_DATA;
break;
case FILE_DATA_E_CHECKSUM:
if (strcmp(name, "extracted-checksum") == 0)
xar->xmlsts = FILE_DATA;
break;
case FILE_DATA_CONTENT:
if (strcmp(name, "content") == 0)
xar->xmlsts = FILE_DATA;
break;
case FILE_EA:
if (strcmp(name, "ea") == 0) {
xar->xmlsts = TOC_FILE;
xar->xattr = NULL;
}
break;
case FILE_EA_LENGTH:
if (strcmp(name, "length") == 0)
xar->xmlsts = FILE_EA;
break;
case FILE_EA_OFFSET:
if (strcmp(name, "offset") == 0)
xar->xmlsts = FILE_EA;
break;
case FILE_EA_SIZE:
if (strcmp(name, "size") == 0)
xar->xmlsts = FILE_EA;
break;
case FILE_EA_ENCODING:
if (strcmp(name, "encoding") == 0)
xar->xmlsts = FILE_EA;
break;
case FILE_EA_A_CHECKSUM:
if (strcmp(name, "archived-checksum") == 0)
xar->xmlsts = FILE_EA;
break;
case FILE_EA_E_CHECKSUM:
if (strcmp(name, "extracted-checksum") == 0)
xar->xmlsts = FILE_EA;
break;
case FILE_EA_NAME:
if (strcmp(name, "name") == 0)
xar->xmlsts = FILE_EA;
break;
case FILE_EA_FSTYPE:
if (strcmp(name, "fstype") == 0)
xar->xmlsts = FILE_EA;
break;
case FILE_CTIME:
if (strcmp(name, "ctime") == 0)
xar->xmlsts = TOC_FILE;
break;
case FILE_MTIME:
if (strcmp(name, "mtime") == 0)
xar->xmlsts = TOC_FILE;
break;
case FILE_ATIME:
if (strcmp(name, "atime") == 0)
xar->xmlsts = TOC_FILE;
break;
case FILE_GROUP:
if (strcmp(name, "group") == 0)
xar->xmlsts = TOC_FILE;
break;
case FILE_GID:
if (strcmp(name, "gid") == 0)
xar->xmlsts = TOC_FILE;
break;
case FILE_USER:
if (strcmp(name, "user") == 0)
xar->xmlsts = TOC_FILE;
break;
case FILE_UID:
if (strcmp(name, "uid") == 0)
xar->xmlsts = TOC_FILE;
break;
case FILE_MODE:
if (strcmp(name, "mode") == 0)
xar->xmlsts = TOC_FILE;
break;
case FILE_DEVICE:
if (strcmp(name, "device") == 0)
xar->xmlsts = TOC_FILE;
break;
case FILE_DEVICE_MAJOR:
if (strcmp(name, "major") == 0)
xar->xmlsts = FILE_DEVICE;
break;
case FILE_DEVICE_MINOR:
if (strcmp(name, "minor") == 0)
xar->xmlsts = FILE_DEVICE;
break;
case FILE_DEVICENO:
if (strcmp(name, "deviceno") == 0)
xar->xmlsts = TOC_FILE;
break;
case FILE_INODE:
if (strcmp(name, "inode") == 0)
xar->xmlsts = TOC_FILE;
break;
case FILE_LINK:
if (strcmp(name, "link") == 0)
xar->xmlsts = TOC_FILE;
break;
case FILE_TYPE:
if (strcmp(name, "type") == 0)
xar->xmlsts = TOC_FILE;
break;
case FILE_NAME:
if (strcmp(name, "name") == 0)
xar->xmlsts = TOC_FILE;
break;
case FILE_ACL:
if (strcmp(name, "acl") == 0)
xar->xmlsts = TOC_FILE;
break;
case FILE_ACL_DEFAULT:
if (strcmp(name, "default") == 0)
xar->xmlsts = FILE_ACL;
break;
case FILE_ACL_ACCESS:
if (strcmp(name, "access") == 0)
xar->xmlsts = FILE_ACL;
break;
case FILE_ACL_APPLEEXTENDED:
if (strcmp(name, "appleextended") == 0)
xar->xmlsts = FILE_ACL;
break;
case FILE_FLAGS:
if (strcmp(name, "flags") == 0)
xar->xmlsts = TOC_FILE;
break;
case FILE_FLAGS_USER_NODUMP:
if (strcmp(name, "UserNoDump") == 0)
xar->xmlsts = FILE_FLAGS;
break;
case FILE_FLAGS_USER_IMMUTABLE:
if (strcmp(name, "UserImmutable") == 0)
xar->xmlsts = FILE_FLAGS;
break;
case FILE_FLAGS_USER_APPEND:
if (strcmp(name, "UserAppend") == 0)
xar->xmlsts = FILE_FLAGS;
break;
case FILE_FLAGS_USER_OPAQUE:
if (strcmp(name, "UserOpaque") == 0)
xar->xmlsts = FILE_FLAGS;
break;
case FILE_FLAGS_USER_NOUNLINK:
if (strcmp(name, "UserNoUnlink") == 0)
xar->xmlsts = FILE_FLAGS;
break;
case FILE_FLAGS_SYS_ARCHIVED:
if (strcmp(name, "SystemArchived") == 0)
xar->xmlsts = FILE_FLAGS;
break;
case FILE_FLAGS_SYS_IMMUTABLE:
if (strcmp(name, "SystemImmutable") == 0)
xar->xmlsts = FILE_FLAGS;
break;
case FILE_FLAGS_SYS_APPEND:
if (strcmp(name, "SystemAppend") == 0)
xar->xmlsts = FILE_FLAGS;
break;
case FILE_FLAGS_SYS_NOUNLINK:
if (strcmp(name, "SystemNoUnlink") == 0)
xar->xmlsts = FILE_FLAGS;
break;
case FILE_FLAGS_SYS_SNAPSHOT:
if (strcmp(name, "SystemSnapshot") == 0)
xar->xmlsts = FILE_FLAGS;
break;
case FILE_EXT2:
if (strcmp(name, "ext2") == 0)
xar->xmlsts = TOC_FILE;
break;
case FILE_EXT2_SecureDeletion:
if (strcmp(name, "SecureDeletion") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_Undelete:
if (strcmp(name, "Undelete") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_Compress:
if (strcmp(name, "Compress") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_Synchronous:
if (strcmp(name, "Synchronous") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_Immutable:
if (strcmp(name, "Immutable") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_AppendOnly:
if (strcmp(name, "AppendOnly") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_NoDump:
if (strcmp(name, "NoDump") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_NoAtime:
if (strcmp(name, "NoAtime") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_CompDirty:
if (strcmp(name, "CompDirty") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_CompBlock:
if (strcmp(name, "CompBlock") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_NoCompBlock:
if (strcmp(name, "NoCompBlock") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_CompError:
if (strcmp(name, "CompError") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_BTree:
if (strcmp(name, "BTree") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_HashIndexed:
if (strcmp(name, "HashIndexed") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_iMagic:
if (strcmp(name, "iMagic") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_Journaled:
if (strcmp(name, "Journaled") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_NoTail:
if (strcmp(name, "NoTail") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_DirSync:
if (strcmp(name, "DirSync") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_TopDir:
if (strcmp(name, "TopDir") == 0)
xar->xmlsts = FILE_EXT2;
break;
case FILE_EXT2_Reserved:
if (strcmp(name, "Reserved") == 0)
xar->xmlsts = FILE_EXT2;
break;
case UNKNOWN:
unknowntag_end(xar, name);
break;
}
}
static const int base64[256] = {
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, /* 00 - 0F */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, /* 10 - 1F */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, 62, -1, -1, -1, 63, /* 20 - 2F */
52, 53, 54, 55, 56, 57, 58, 59,
60, 61, -1, -1, -1, -1, -1, -1, /* 30 - 3F */
-1, 0, 1, 2, 3, 4, 5, 6,
7, 8, 9, 10, 11, 12, 13, 14, /* 40 - 4F */
15, 16, 17, 18, 19, 20, 21, 22,
23, 24, 25, -1, -1, -1, -1, -1, /* 50 - 5F */
-1, 26, 27, 28, 29, 30, 31, 32,
33, 34, 35, 36, 37, 38, 39, 40, /* 60 - 6F */
41, 42, 43, 44, 45, 46, 47, 48,
49, 50, 51, -1, -1, -1, -1, -1, /* 70 - 7F */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, /* 80 - 8F */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, /* 90 - 9F */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, /* A0 - AF */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, /* B0 - BF */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, /* C0 - CF */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, /* D0 - DF */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, /* E0 - EF */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, /* F0 - FF */
};
static void
strappend_base64(struct archive_string *as, const char *s, size_t l)
{
unsigned char buff[256];
unsigned char *out;
const unsigned char *b;
size_t len;
len = 0;
out = buff;
b = (const unsigned char *)s;
while (l > 0) {
int n = 0;
if (l > 0) {
if (base64[b[0]] < 0 || base64[b[1]] < 0)
break;
n = base64[*b++] << 18;
n |= base64[*b++] << 12;
*out++ = n >> 16;
len++;
l -= 2;
}
if (l > 0) {
if (base64[*b] < 0)
break;
n |= base64[*b++] << 6;
*out++ = (n >> 8) & 0xFF;
len++;
--l;
}
if (l > 0) {
if (base64[*b] < 0)
break;
n |= base64[*b++];
*out++ = n & 0xFF;
len++;
--l;
}
if (len+3 >= sizeof(buff)) {
archive_strncat(as, (const char *)buff, len);
len = 0;
out = buff;
}
}
if (len > 0)
archive_strncat(as, (const char *)buff, len);
}
static void
xml_data(void *userData, const char *s, int len)
{
struct archive_read *a;
struct xar *xar;
a = (struct archive_read *)userData;
xar = (struct xar *)(a->format->data);
#if DEBUG
{
char buff[1024];
if (len > sizeof(buff)-1)
len = sizeof(buff)-1;
memcpy(buff, s, len);
buff[len] = 0;
fprintf(stderr, "\tlen=%d:\"%s\"\n", len, buff);
}
#endif
switch (xar->xmlsts) {
case TOC_CHECKSUM_OFFSET:
xar->toc_chksum_offset = atol10(s, len);
break;
case TOC_CHECKSUM_SIZE:
xar->toc_chksum_size = atol10(s, len);
break;
default:
break;
}
if (xar->file == NULL)
return;
switch (xar->xmlsts) {
case FILE_NAME:
if (xar->file->parent != NULL) {
archive_string_concat(&(xar->file->pathname),
&(xar->file->parent->pathname));
archive_strappend_char(&(xar->file->pathname), '/');
}
xar->file->has |= HAS_PATHNAME;
if (xar->base64text)
strappend_base64(&(xar->file->pathname), s, len);
else
archive_strncat(&(xar->file->pathname), s, len);
break;
case FILE_LINK:
xar->file->has |= HAS_SYMLINK;
archive_strncpy(&(xar->file->symlink), s, len);
break;
case FILE_TYPE:
if (strncmp("file", s, len) == 0 ||
strncmp("hardlink", s, len) == 0)
xar->file->mode =
(xar->file->mode & ~AE_IFMT) | AE_IFREG;
if (strncmp("directory", s, len) == 0)
xar->file->mode =
(xar->file->mode & ~AE_IFMT) | AE_IFDIR;
if (strncmp("symlink", s, len) == 0)
xar->file->mode =
(xar->file->mode & ~AE_IFMT) | AE_IFLNK;
if (strncmp("character special", s, len) == 0)
xar->file->mode =
(xar->file->mode & ~AE_IFMT) | AE_IFCHR;
if (strncmp("block special", s, len) == 0)
xar->file->mode =
(xar->file->mode & ~AE_IFMT) | AE_IFBLK;
if (strncmp("socket", s, len) == 0)
xar->file->mode =
(xar->file->mode & ~AE_IFMT) | AE_IFSOCK;
if (strncmp("fifo", s, len) == 0)
xar->file->mode =
(xar->file->mode & ~AE_IFMT) | AE_IFIFO;
xar->file->has |= HAS_TYPE;
break;
case FILE_INODE:
xar->file->has |= HAS_INO;
xar->file->ino64 = atol10(s, len);
break;
case FILE_DEVICE_MAJOR:
xar->file->has |= HAS_DEVMAJOR;
xar->file->devmajor = (dev_t)atol10(s, len);
break;
case FILE_DEVICE_MINOR:
xar->file->has |= HAS_DEVMINOR;
xar->file->devminor = (dev_t)atol10(s, len);
break;
case FILE_DEVICENO:
xar->file->has |= HAS_DEV;
xar->file->dev = (dev_t)atol10(s, len);
break;
case FILE_MODE:
xar->file->has |= HAS_MODE;
xar->file->mode =
(xar->file->mode & AE_IFMT) |
(atol8(s, len) & ~AE_IFMT);
break;
case FILE_GROUP:
xar->file->has |= HAS_GID;
archive_strncpy(&(xar->file->gname), s, len);
break;
case FILE_GID:
xar->file->has |= HAS_GID;
xar->file->gid = atol10(s, len);
break;
case FILE_USER:
xar->file->has |= HAS_UID;
archive_strncpy(&(xar->file->uname), s, len);
break;
case FILE_UID:
xar->file->has |= HAS_UID;
xar->file->uid = atol10(s, len);
break;
case FILE_CTIME:
xar->file->has |= HAS_TIME;
xar->file->ctime = parse_time(s, len);
break;
case FILE_MTIME:
xar->file->has |= HAS_TIME;
xar->file->mtime = parse_time(s, len);
break;
case FILE_ATIME:
xar->file->has |= HAS_TIME;
xar->file->atime = parse_time(s, len);
break;
case FILE_DATA_LENGTH:
xar->file->has |= HAS_DATA;
xar->file->length = atol10(s, len);
break;
case FILE_DATA_OFFSET:
xar->file->has |= HAS_DATA;
xar->file->offset = atol10(s, len);
break;
case FILE_DATA_SIZE:
xar->file->has |= HAS_DATA;
xar->file->size = atol10(s, len);
break;
case FILE_DATA_A_CHECKSUM:
xar->file->a_sum.len = atohex(xar->file->a_sum.val,
sizeof(xar->file->a_sum.val), s, len);
break;
case FILE_DATA_E_CHECKSUM:
xar->file->e_sum.len = atohex(xar->file->e_sum.val,
sizeof(xar->file->e_sum.val), s, len);
break;
case FILE_EA_LENGTH:
xar->file->has |= HAS_XATTR;
xar->xattr->length = atol10(s, len);
break;
case FILE_EA_OFFSET:
xar->file->has |= HAS_XATTR;
xar->xattr->offset = atol10(s, len);
break;
case FILE_EA_SIZE:
xar->file->has |= HAS_XATTR;
xar->xattr->size = atol10(s, len);
break;
case FILE_EA_A_CHECKSUM:
xar->file->has |= HAS_XATTR;
xar->xattr->a_sum.len = atohex(xar->xattr->a_sum.val,
sizeof(xar->xattr->a_sum.val), s, len);
break;
case FILE_EA_E_CHECKSUM:
xar->file->has |= HAS_XATTR;
xar->xattr->e_sum.len = atohex(xar->xattr->e_sum.val,
sizeof(xar->xattr->e_sum.val), s, len);
break;
case FILE_EA_NAME:
xar->file->has |= HAS_XATTR;
archive_strncpy(&(xar->xattr->name), s, len);
break;
case FILE_EA_FSTYPE:
xar->file->has |= HAS_XATTR;
archive_strncpy(&(xar->xattr->fstype), s, len);
break;
break;
case FILE_ACL_DEFAULT:
case FILE_ACL_ACCESS:
case FILE_ACL_APPLEEXTENDED:
xar->file->has |= HAS_ACL;
/* TODO */
break;
case INIT:
case XAR:
case TOC:
case TOC_CREATION_TIME:
case TOC_CHECKSUM:
case TOC_CHECKSUM_OFFSET:
case TOC_CHECKSUM_SIZE:
case TOC_FILE:
case FILE_DATA:
case FILE_DATA_ENCODING:
case FILE_DATA_CONTENT:
case FILE_DEVICE:
case FILE_EA:
case FILE_EA_ENCODING:
case FILE_ACL:
case FILE_FLAGS:
case FILE_FLAGS_USER_NODUMP:
case FILE_FLAGS_USER_IMMUTABLE:
case FILE_FLAGS_USER_APPEND:
case FILE_FLAGS_USER_OPAQUE:
case FILE_FLAGS_USER_NOUNLINK:
case FILE_FLAGS_SYS_ARCHIVED:
case FILE_FLAGS_SYS_IMMUTABLE:
case FILE_FLAGS_SYS_APPEND:
case FILE_FLAGS_SYS_NOUNLINK:
case FILE_FLAGS_SYS_SNAPSHOT:
case FILE_EXT2:
case FILE_EXT2_SecureDeletion:
case FILE_EXT2_Undelete:
case FILE_EXT2_Compress:
case FILE_EXT2_Synchronous:
case FILE_EXT2_Immutable:
case FILE_EXT2_AppendOnly:
case FILE_EXT2_NoDump:
case FILE_EXT2_NoAtime:
case FILE_EXT2_CompDirty:
case FILE_EXT2_CompBlock:
case FILE_EXT2_NoCompBlock:
case FILE_EXT2_CompError:
case FILE_EXT2_BTree:
case FILE_EXT2_HashIndexed:
case FILE_EXT2_iMagic:
case FILE_EXT2_Journaled:
case FILE_EXT2_NoTail:
case FILE_EXT2_DirSync:
case FILE_EXT2_TopDir:
case FILE_EXT2_Reserved:
case UNKNOWN:
break;
}
}
/*
* BSD file flags.
*/
static int
xml_parse_file_flags(struct xar *xar, const char *name)
{
const char *flag = NULL;
if (strcmp(name, "UserNoDump") == 0) {
xar->xmlsts = FILE_FLAGS_USER_NODUMP;
flag = "nodump";
}
else if (strcmp(name, "UserImmutable") == 0) {
xar->xmlsts = FILE_FLAGS_USER_IMMUTABLE;
flag = "uimmutable";
}
else if (strcmp(name, "UserAppend") == 0) {
xar->xmlsts = FILE_FLAGS_USER_APPEND;
flag = "uappend";
}
else if (strcmp(name, "UserOpaque") == 0) {
xar->xmlsts = FILE_FLAGS_USER_OPAQUE;
flag = "opaque";
}
else if (strcmp(name, "UserNoUnlink") == 0) {
xar->xmlsts = FILE_FLAGS_USER_NOUNLINK;
flag = "nouunlink";
}
else if (strcmp(name, "SystemArchived") == 0) {
xar->xmlsts = FILE_FLAGS_SYS_ARCHIVED;
flag = "archived";
}
else if (strcmp(name, "SystemImmutable") == 0) {
xar->xmlsts = FILE_FLAGS_SYS_IMMUTABLE;
flag = "simmutable";
}
else if (strcmp(name, "SystemAppend") == 0) {
xar->xmlsts = FILE_FLAGS_SYS_APPEND;
flag = "sappend";
}
else if (strcmp(name, "SystemNoUnlink") == 0) {
xar->xmlsts = FILE_FLAGS_SYS_NOUNLINK;
flag = "nosunlink";
}
else if (strcmp(name, "SystemSnapshot") == 0) {
xar->xmlsts = FILE_FLAGS_SYS_SNAPSHOT;
flag = "snapshot";
}
if (flag == NULL)
return (0);
xar->file->has |= HAS_FFLAGS;
if (archive_strlen(&(xar->file->fflags_text)) > 0)
archive_strappend_char(&(xar->file->fflags_text), ',');
archive_strcat(&(xar->file->fflags_text), flag);
return (1);
}
/*
* Linux file flags.
*/
static int
xml_parse_file_ext2(struct xar *xar, const char *name)
{
const char *flag = NULL;
if (strcmp(name, "SecureDeletion") == 0) {
xar->xmlsts = FILE_EXT2_SecureDeletion;
flag = "securedeletion";
}
else if (strcmp(name, "Undelete") == 0) {
xar->xmlsts = FILE_EXT2_Undelete;
flag = "nouunlink";
}
else if (strcmp(name, "Compress") == 0) {
xar->xmlsts = FILE_EXT2_Compress;
flag = "compress";
}
else if (strcmp(name, "Synchronous") == 0) {
xar->xmlsts = FILE_EXT2_Synchronous;
flag = "sync";
}
else if (strcmp(name, "Immutable") == 0) {
xar->xmlsts = FILE_EXT2_Immutable;
flag = "simmutable";
}
else if (strcmp(name, "AppendOnly") == 0) {
xar->xmlsts = FILE_EXT2_AppendOnly;
flag = "sappend";
}
else if (strcmp(name, "NoDump") == 0) {
xar->xmlsts = FILE_EXT2_NoDump;
flag = "nodump";
}
else if (strcmp(name, "NoAtime") == 0) {
xar->xmlsts = FILE_EXT2_NoAtime;
flag = "noatime";
}
else if (strcmp(name, "CompDirty") == 0) {
xar->xmlsts = FILE_EXT2_CompDirty;
flag = "compdirty";
}
else if (strcmp(name, "CompBlock") == 0) {
xar->xmlsts = FILE_EXT2_CompBlock;
flag = "comprblk";
}
else if (strcmp(name, "NoCompBlock") == 0) {
xar->xmlsts = FILE_EXT2_NoCompBlock;
flag = "nocomprblk";
}
else if (strcmp(name, "CompError") == 0) {
xar->xmlsts = FILE_EXT2_CompError;
flag = "comperr";
}
else if (strcmp(name, "BTree") == 0) {
xar->xmlsts = FILE_EXT2_BTree;
flag = "btree";
}
else if (strcmp(name, "HashIndexed") == 0) {
xar->xmlsts = FILE_EXT2_HashIndexed;
flag = "hashidx";
}
else if (strcmp(name, "iMagic") == 0) {
xar->xmlsts = FILE_EXT2_iMagic;
flag = "imagic";
}
else if (strcmp(name, "Journaled") == 0) {
xar->xmlsts = FILE_EXT2_Journaled;
flag = "journal";
}
else if (strcmp(name, "NoTail") == 0) {
xar->xmlsts = FILE_EXT2_NoTail;
flag = "notail";
}
else if (strcmp(name, "DirSync") == 0) {
xar->xmlsts = FILE_EXT2_DirSync;
flag = "dirsync";
}
else if (strcmp(name, "TopDir") == 0) {
xar->xmlsts = FILE_EXT2_TopDir;
flag = "topdir";
}
else if (strcmp(name, "Reserved") == 0) {
xar->xmlsts = FILE_EXT2_Reserved;
flag = "reserved";
}
if (flag == NULL)
return (0);
if (archive_strlen(&(xar->file->fflags_text)) > 0)
archive_strappend_char(&(xar->file->fflags_text), ',');
archive_strcat(&(xar->file->fflags_text), flag);
return (1);
}
#ifdef HAVE_LIBXML_XMLREADER_H
static int
xml2_xmlattr_setup(struct xmlattr_list *list, xmlTextReaderPtr reader)
{
struct xmlattr *attr;
int r;
list->first = NULL;
list->last = &(list->first);
r = xmlTextReaderMoveToFirstAttribute(reader);
while (r == 1) {
attr = malloc(sizeof*(attr));
if (attr == NULL)
__archive_errx(1, "Out of memory");
attr->name = strdup(
(const char *)xmlTextReaderConstLocalName(reader));
if (attr->name == NULL)
__archive_errx(1, "Out of memory");
attr->value = strdup(
(const char *)xmlTextReaderConstValue(reader));
if (attr->value == NULL)
__archive_errx(1, "Out of memory");
attr->next = NULL;
*list->last = attr;
list->last = &(attr->next);
r = xmlTextReaderMoveToNextAttribute(reader);
}
return (r);
}
static int
xml2_read_cb(void *context, char *buffer, int len)
{
struct archive_read *a;
struct xar *xar;
const void *d;
size_t outbytes;
size_t used;
int r;
a = (struct archive_read *)context;
xar = (struct xar *)(a->format->data);
if (xar->toc_remaining <= 0)
return (0);
d = buffer;
outbytes = len;
r = rd_contents(a, &d, &outbytes, &used, xar->toc_remaining);
if (r != ARCHIVE_OK)
return (r);
__archive_read_consume(a, used);
xar->toc_remaining -= used;
xar->offset += used;
xar->toc_total += outbytes;
PRINT_TOC(buffer, len);
return ((int)outbytes);
}
static int
xml2_close_cb(void *context)
{
(void)context; /* UNUSED */
return (0);
}
static void
xml2_error_hdr(void *arg, const char *msg, xmlParserSeverities severity,
xmlTextReaderLocatorPtr locator)
{
struct archive_read *a;
(void)locator; /* UNUSED */
a = (struct archive_read *)arg;
switch (severity) {
case XML_PARSER_SEVERITY_VALIDITY_WARNING:
case XML_PARSER_SEVERITY_WARNING:
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"XML Parsing error: %s", msg);
break;
case XML_PARSER_SEVERITY_VALIDITY_ERROR:
case XML_PARSER_SEVERITY_ERROR:
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"XML Parsing error: %s", msg);
break;
}
}
static int
xml2_read_toc(struct archive_read *a)
{
xmlTextReaderPtr reader;
struct xmlattr_list list;
int r;
reader = xmlReaderForIO(xml2_read_cb, xml2_close_cb, a, NULL, NULL, 0);
if (reader == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Couldn't allocate memory for xml parser");
return (ARCHIVE_FATAL);
}
xmlTextReaderSetErrorHandler(reader, xml2_error_hdr, a);
while ((r = xmlTextReaderRead(reader)) == 1) {
const char *name, *value;
int type, empty;
type = xmlTextReaderNodeType(reader);
name = (const char *)xmlTextReaderConstLocalName(reader);
switch (type) {
case XML_READER_TYPE_ELEMENT:
empty = xmlTextReaderIsEmptyElement(reader);
r = xml2_xmlattr_setup(&list, reader);
if (r == 0) {
xml_start(a, name, &list);
xmlattr_cleanup(&list);
if (empty)
xml_end(a, name);
}
break;
case XML_READER_TYPE_END_ELEMENT:
xml_end(a, name);
break;
case XML_READER_TYPE_TEXT:
value = (const char *)xmlTextReaderConstValue(reader);
xml_data(a, value, strlen(value));
break;
case XML_READER_TYPE_SIGNIFICANT_WHITESPACE:
default:
break;
}
if (r < 0)
break;
}
xmlFreeTextReader(reader);
xmlCleanupParser();
return ((r == 0)?ARCHIVE_OK:ARCHIVE_FATAL);
}
#elif defined(HAVE_BSDXML_H) || defined(HAVE_EXPAT_H)
static void
expat_xmlattr_setup(struct xmlattr_list *list, const XML_Char **atts)
{
struct xmlattr *attr;
list->first = NULL;
list->last = &(list->first);
if (atts == NULL)
return;
while (atts[0] != NULL && atts[1] != NULL) {
attr = malloc(sizeof*(attr));
if (attr == NULL)
__archive_errx(1, "Out of memory");
attr->name = strdup(atts[0]);
if (attr->name == NULL)
__archive_errx(1, "Out of memory");
attr->value = strdup(atts[1]);
if (attr->value == NULL)
__archive_errx(1, "Out of memory");
attr->next = NULL;
*list->last = attr;
list->last = &(attr->next);
atts += 2;
}
}
static void
expat_start_cb(void *userData, const XML_Char *name, const XML_Char **atts)
{
struct xmlattr_list list;
expat_xmlattr_setup(&list, atts);
xml_start(userData, (const char *)name, &list);
xmlattr_cleanup(&list);
}
static void
expat_end_cb(void *userData, const XML_Char *name)
{
xml_end(userData, (const char *)name);
}
static void
expat_data_cb(void *userData, const XML_Char *s, int len)
{
xml_data(userData, s, len);
}
static int
expat_read_toc(struct archive_read *a)
{
struct xar *xar;
XML_Parser parser;
xar = (struct xar *)(a->format->data);
/* Initialize XML Parser library. */
parser = XML_ParserCreate(NULL);
if (parser == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Couldn't allocate memory for xml parser");
return (ARCHIVE_FATAL);
}
XML_SetUserData(parser, a);
XML_SetElementHandler(parser, expat_start_cb, expat_end_cb);
XML_SetCharacterDataHandler(parser, expat_data_cb);
xar->xmlsts = INIT;
while (xar->toc_remaining) {
enum XML_Status xr;
const void *d;
size_t outbytes;
size_t used;
int r;
d = NULL;
r = rd_contents(a, &d, &outbytes, &used, xar->toc_remaining);
if (r != ARCHIVE_OK)
return (r);
__archive_read_consume(a, used);
xar->toc_remaining -= used;
xar->offset += used;
xar->toc_total += outbytes;
PRINT_TOC(d, outbytes);
xr = XML_Parse(parser, d, outbytes, xar->toc_remaining == 0);
if (xr == XML_STATUS_ERROR) {
XML_ParserFree(parser);
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"XML Parsing failed");
return (ARCHIVE_FATAL);
}
}
XML_ParserFree(parser);
return (ARCHIVE_OK);
}
#endif /* defined(HAVE_BSDXML_H) || defined(HAVE_EXPAT_H) */
#endif /* Support xar format */
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