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ghcup-hs/3rdparty/libarchive/c/archive_write_set_format_xar.c

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/*-
* Copyright (c) 2010-2012 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_LIMITS_H
#include <limits.h>
#endif
#include <stdlib.h>
#if HAVE_LIBXML_XMLWRITER_H
#include <libxml/xmlwriter.h>
#endif
#ifdef HAVE_BZLIB_H
#include <bzlib.h>
#endif
#if HAVE_LZMA_H
#include <lzma.h>
#endif
#ifdef HAVE_ZLIB_H
#include <zlib.h>
#endif
#include "archive.h"
#include "archive_digest_private.h"
#include "archive_endian.h"
#include "archive_entry.h"
#include "archive_entry_locale.h"
#include "archive_private.h"
#include "archive_rb.h"
#include "archive_string.h"
#include "archive_write_private.h"
/*
* Differences to xar utility.
* - Subdocument is not supported yet.
* - ACL is not supported yet.
* - When writing an XML element <link type="<file-type>">, <file-type>
* which is a file type a symbolic link is referencing is always marked
* as "broken". Xar utility uses stat(2) to get the file type, but, in
* libarchive format writer, we should not use it; if it is needed, we
* should get about it at archive_read_disk.c.
* - It is possible to appear both <flags> and <ext2> elements.
* Xar utility generates <flags> on BSD platform and <ext2> on Linux
* platform.
*
*/
#if !(defined(HAVE_LIBXML_XMLWRITER_H) && defined(LIBXML_VERSION) &&\
LIBXML_VERSION >= 20703) ||\
!defined(HAVE_ZLIB_H) || \
!defined(ARCHIVE_HAS_MD5) || !defined(ARCHIVE_HAS_SHA1)
/*
* xar needs several external libraries.
* o libxml2
* o openssl or MD5/SHA1 hash function
* o zlib
* o bzlib2 (option)
* o liblzma (option)
*/
int
archive_write_set_format_xar(struct archive *_a)
{
struct archive_write *a = (struct archive_write *)_a;
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"Xar not supported on this platform");
return (ARCHIVE_WARN);
}
#else /* Support xar format */
/*#define DEBUG_PRINT_TOC 1 */
#define BAD_CAST_CONST (const xmlChar *)
#define HEADER_MAGIC 0x78617221
#define HEADER_SIZE 28
#define HEADER_VERSION 1
enum sumalg {
CKSUM_NONE = 0,
CKSUM_SHA1 = 1,
CKSUM_MD5 = 2
};
#define MD5_SIZE 16
#define SHA1_SIZE 20
#define MAX_SUM_SIZE 20
#define MD5_NAME "md5"
#define SHA1_NAME "sha1"
enum enctype {
NONE,
GZIP,
BZIP2,
LZMA,
XZ,
};
struct chksumwork {
enum sumalg alg;
#ifdef ARCHIVE_HAS_MD5
archive_md5_ctx md5ctx;
#endif
#ifdef ARCHIVE_HAS_SHA1
archive_sha1_ctx sha1ctx;
#endif
};
enum la_zaction {
ARCHIVE_Z_FINISH,
ARCHIVE_Z_RUN
};
/*
* Universal zstream.
*/
struct la_zstream {
const unsigned char *next_in;
size_t avail_in;
uint64_t total_in;
unsigned char *next_out;
size_t avail_out;
uint64_t total_out;
int valid;
void *real_stream;
int (*code) (struct archive *a,
struct la_zstream *lastrm,
enum la_zaction action);
int (*end)(struct archive *a,
struct la_zstream *lastrm);
};
struct chksumval {
enum sumalg alg;
size_t len;
unsigned char val[MAX_SUM_SIZE];
};
struct heap_data {
int id;
struct heap_data *next;
uint64_t temp_offset;
uint64_t length; /* archived size. */
uint64_t size; /* extracted size. */
enum enctype compression;
struct chksumval a_sum; /* archived checksum. */
struct chksumval e_sum; /* extracted checksum. */
};
struct file {
struct archive_rb_node rbnode;
int id;
struct archive_entry *entry;
struct archive_rb_tree rbtree;
struct file *next;
struct file *chnext;
struct file *hlnext;
/* For hardlinked files.
* Use only when archive_entry_nlink() > 1 */
struct file *hardlink_target;
struct file *parent; /* parent directory entry */
/*
* To manage sub directory files.
* We use 'chnext' (a member of struct file) to chain.
*/
struct {
struct file *first;
struct file **last;
} children;
/* For making a directory tree. */
struct archive_string parentdir;
struct archive_string basename;
struct archive_string symlink;
int ea_idx;
struct {
struct heap_data *first;
struct heap_data **last;
} xattr;
struct heap_data data;
struct archive_string script;
signed int virtual:1;
signed int dir:1;
};
struct hardlink {
struct archive_rb_node rbnode;
int nlink;
struct {
struct file *first;
struct file **last;
} file_list;
};
struct xar {
int temp_fd;
uint64_t temp_offset;
int file_idx;
struct file *root;
struct file *cur_dirent;
struct archive_string cur_dirstr;
struct file *cur_file;
uint64_t bytes_remaining;
struct archive_string tstr;
struct archive_string vstr;
enum sumalg opt_toc_sumalg;
enum sumalg opt_sumalg;
enum enctype opt_compression;
int opt_compression_level;
uint32_t opt_threads;
struct chksumwork a_sumwrk; /* archived checksum. */
struct chksumwork e_sumwrk; /* extracted checksum. */
struct la_zstream stream;
struct archive_string_conv *sconv;
/*
* Compressed data buffer.
*/
unsigned char wbuff[1024 * 64];
size_t wbuff_remaining;
struct heap_data toc;
/*
* The list of all file entries is used to manage struct file
* objects.
* We use 'next' (a member of struct file) to chain.
*/
struct {
struct file *first;
struct file **last;
} file_list;
/*
* The list of hard-linked file entries.
* We use 'hlnext' (a member of struct file) to chain.
*/
struct archive_rb_tree hardlink_rbtree;
};
static int xar_options(struct archive_write *,
const char *, const char *);
static int xar_write_header(struct archive_write *,
struct archive_entry *);
static ssize_t xar_write_data(struct archive_write *,
const void *, size_t);
static int xar_finish_entry(struct archive_write *);
static int xar_close(struct archive_write *);
static int xar_free(struct archive_write *);
static struct file *file_new(struct archive_write *a, struct archive_entry *);
static void file_free(struct file *);
static struct file *file_create_virtual_dir(struct archive_write *a, struct xar *,
const char *);
static int file_add_child_tail(struct file *, struct file *);
static struct file *file_find_child(struct file *, const char *);
static int file_gen_utility_names(struct archive_write *,
struct file *);
static int get_path_component(char *, int, const char *);
static int file_tree(struct archive_write *, struct file **);
static void file_register(struct xar *, struct file *);
static void file_init_register(struct xar *);
static void file_free_register(struct xar *);
static int file_register_hardlink(struct archive_write *,
struct file *);
static void file_connect_hardlink_files(struct xar *);
static void file_init_hardlinks(struct xar *);
static void file_free_hardlinks(struct xar *);
static void checksum_init(struct chksumwork *, enum sumalg);
static void checksum_update(struct chksumwork *, const void *, size_t);
static void checksum_final(struct chksumwork *, struct chksumval *);
static int compression_init_encoder_gzip(struct archive *,
struct la_zstream *, int, int);
static int compression_code_gzip(struct archive *,
struct la_zstream *, enum la_zaction);
static int compression_end_gzip(struct archive *, struct la_zstream *);
static int compression_init_encoder_bzip2(struct archive *,
struct la_zstream *, int);
#if defined(HAVE_BZLIB_H) && defined(BZ_CONFIG_ERROR)
static int compression_code_bzip2(struct archive *,
struct la_zstream *, enum la_zaction);
static int compression_end_bzip2(struct archive *, struct la_zstream *);
#endif
static int compression_init_encoder_lzma(struct archive *,
struct la_zstream *, int);
static int compression_init_encoder_xz(struct archive *,
struct la_zstream *, int, int);
#if defined(HAVE_LZMA_H)
static int compression_code_lzma(struct archive *,
struct la_zstream *, enum la_zaction);
static int compression_end_lzma(struct archive *, struct la_zstream *);
#endif
static int xar_compression_init_encoder(struct archive_write *);
static int compression_code(struct archive *,
struct la_zstream *, enum la_zaction);
static int compression_end(struct archive *,
struct la_zstream *);
static int save_xattrs(struct archive_write *, struct file *);
static int getalgsize(enum sumalg);
static const char *getalgname(enum sumalg);
int
archive_write_set_format_xar(struct archive *_a)
{
struct archive_write *a = (struct archive_write *)_a;
struct xar *xar;
archive_check_magic(_a, ARCHIVE_WRITE_MAGIC,
ARCHIVE_STATE_NEW, "archive_write_set_format_xar");
/* If another format was already registered, unregister it. */
if (a->format_free != NULL)
(a->format_free)(a);
xar = calloc(1, sizeof(*xar));
if (xar == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate xar data");
return (ARCHIVE_FATAL);
}
xar->temp_fd = -1;
file_init_register(xar);
file_init_hardlinks(xar);
archive_string_init(&(xar->tstr));
archive_string_init(&(xar->vstr));
/*
* Create the root directory.
*/
xar->root = file_create_virtual_dir(a, xar, "");
if (xar->root == NULL) {
free(xar);
archive_set_error(&a->archive, ENOMEM,
"Can't allocate xar data");
return (ARCHIVE_FATAL);
}
xar->root->parent = xar->root;
file_register(xar, xar->root);
xar->cur_dirent = xar->root;
archive_string_init(&(xar->cur_dirstr));
archive_string_ensure(&(xar->cur_dirstr), 1);
xar->cur_dirstr.s[0] = 0;
/*
* Initialize option.
*/
/* Set default checksum type. */
xar->opt_toc_sumalg = CKSUM_SHA1;
xar->opt_sumalg = CKSUM_SHA1;
/* Set default compression type, level, and number of threads. */
xar->opt_compression = GZIP;
xar->opt_compression_level = 6;
xar->opt_threads = 1;
a->format_data = xar;
a->format_name = "xar";
a->format_options = xar_options;
a->format_write_header = xar_write_header;
a->format_write_data = xar_write_data;
a->format_finish_entry = xar_finish_entry;
a->format_close = xar_close;
a->format_free = xar_free;
a->archive.archive_format = ARCHIVE_FORMAT_XAR;
a->archive.archive_format_name = "xar";
return (ARCHIVE_OK);
}
static int
xar_options(struct archive_write *a, const char *key, const char *value)
{
struct xar *xar;
xar = (struct xar *)a->format_data;
if (strcmp(key, "checksum") == 0) {
if (value == NULL)
xar->opt_sumalg = CKSUM_NONE;
else if (strcmp(value, "none") == 0)
xar->opt_sumalg = CKSUM_NONE;
else if (strcmp(value, "sha1") == 0)
xar->opt_sumalg = CKSUM_SHA1;
else if (strcmp(value, "md5") == 0)
xar->opt_sumalg = CKSUM_MD5;
else {
archive_set_error(&(a->archive),
ARCHIVE_ERRNO_MISC,
"Unknown checksum name: `%s'",
value);
return (ARCHIVE_FAILED);
}
return (ARCHIVE_OK);
}
if (strcmp(key, "compression") == 0) {
const char *name = NULL;
if (value == NULL)
xar->opt_compression = NONE;
else if (strcmp(value, "none") == 0)
xar->opt_compression = NONE;
else if (strcmp(value, "gzip") == 0)
xar->opt_compression = GZIP;
else if (strcmp(value, "bzip2") == 0)
#if defined(HAVE_BZLIB_H) && defined(BZ_CONFIG_ERROR)
xar->opt_compression = BZIP2;
#else
name = "bzip2";
#endif
else if (strcmp(value, "lzma") == 0)
#if HAVE_LZMA_H
xar->opt_compression = LZMA;
#else
name = "lzma";
#endif
else if (strcmp(value, "xz") == 0)
#if HAVE_LZMA_H
xar->opt_compression = XZ;
#else
name = "xz";
#endif
else {
archive_set_error(&(a->archive),
ARCHIVE_ERRNO_MISC,
"Unknown compression name: `%s'",
value);
return (ARCHIVE_FAILED);
}
if (name != NULL) {
archive_set_error(&(a->archive),
ARCHIVE_ERRNO_MISC,
"`%s' compression not supported "
"on this platform",
name);
return (ARCHIVE_FAILED);
}
return (ARCHIVE_OK);
}
if (strcmp(key, "compression-level") == 0) {
if (value == NULL ||
!(value[0] >= '0' && value[0] <= '9') ||
value[1] != '\0') {
archive_set_error(&(a->archive),
ARCHIVE_ERRNO_MISC,
"Illegal value `%s'",
value);
return (ARCHIVE_FAILED);
}
xar->opt_compression_level = value[0] - '0';
return (ARCHIVE_OK);
}
if (strcmp(key, "toc-checksum") == 0) {
if (value == NULL)
xar->opt_toc_sumalg = CKSUM_NONE;
else if (strcmp(value, "none") == 0)
xar->opt_toc_sumalg = CKSUM_NONE;
else if (strcmp(value, "sha1") == 0)
xar->opt_toc_sumalg = CKSUM_SHA1;
else if (strcmp(value, "md5") == 0)
xar->opt_toc_sumalg = CKSUM_MD5;
else {
archive_set_error(&(a->archive),
ARCHIVE_ERRNO_MISC,
"Unknown checksum name: `%s'",
value);
return (ARCHIVE_FAILED);
}
return (ARCHIVE_OK);
}
if (strcmp(key, "threads") == 0) {
char *endptr;
if (value == NULL)
return (ARCHIVE_FAILED);
errno = 0;
xar->opt_threads = (int)strtoul(value, &endptr, 10);
if (errno != 0 || *endptr != '\0') {
xar->opt_threads = 1;
archive_set_error(&(a->archive),
ARCHIVE_ERRNO_MISC,
"Illegal value `%s'",
value);
return (ARCHIVE_FAILED);
}
if (xar->opt_threads == 0) {
#ifdef HAVE_LZMA_STREAM_ENCODER_MT
xar->opt_threads = lzma_cputhreads();
#else
xar->opt_threads = 1;
#endif
}
}
/* Note: The "warn" return is just to inform the options
* supervisor that we didn't handle it. It will generate
* a suitable error if no one used this option. */
return (ARCHIVE_WARN);
}
static int
xar_write_header(struct archive_write *a, struct archive_entry *entry)
{
struct xar *xar;
struct file *file;
struct archive_entry *file_entry;
int r, r2;
xar = (struct xar *)a->format_data;
xar->cur_file = NULL;
xar->bytes_remaining = 0;
if (xar->sconv == NULL) {
xar->sconv = archive_string_conversion_to_charset(
&a->archive, "UTF-8", 1);
if (xar->sconv == NULL)
return (ARCHIVE_FATAL);
}
file = file_new(a, entry);
if (file == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate data");
return (ARCHIVE_FATAL);
}
r2 = file_gen_utility_names(a, file);
if (r2 < ARCHIVE_WARN)
return (r2);
/*
* Ignore a path which looks like the top of directory name
* since we have already made the root directory of an Xar archive.
*/
if (archive_strlen(&(file->parentdir)) == 0 &&
archive_strlen(&(file->basename)) == 0) {
file_free(file);
return (r2);
}
/* Add entry into tree */
file_entry = file->entry;
r = file_tree(a, &file);
if (r != ARCHIVE_OK)
return (r);
/* There is the same file in tree and
* the current file is older than the file in tree.
* So we don't need the current file data anymore. */
if (file->entry != file_entry)
return (r2);
if (file->id == 0)
file_register(xar, file);
/* A virtual file, which is a directory, does not have
* any contents and we won't store it into a archive
* file other than its name. */
if (file->virtual)
return (r2);
/*
* Prepare to save the contents of the file.
*/
if (xar->temp_fd == -1) {
int algsize;
xar->temp_offset = 0;
xar->temp_fd = __archive_mktemp(NULL);
if (xar->temp_fd < 0) {
archive_set_error(&a->archive, errno,
"Couldn't create temporary file");
return (ARCHIVE_FATAL);
}
algsize = getalgsize(xar->opt_toc_sumalg);
if (algsize > 0) {
if (lseek(xar->temp_fd, algsize, SEEK_SET) < 0) {
archive_set_error(&(a->archive), errno,
"lseek failed");
return (ARCHIVE_FATAL);
}
xar->temp_offset = algsize;
}
}
if (archive_entry_hardlink(file->entry) == NULL) {
r = save_xattrs(a, file);
if (r != ARCHIVE_OK)
return (ARCHIVE_FATAL);
}
/* Non regular files contents are unneeded to be saved to
* a temporary file. */
if (archive_entry_filetype(file->entry) != AE_IFREG)
return (r2);
/*
* Set the current file to cur_file to read its contents.
*/
xar->cur_file = file;
if (archive_entry_nlink(file->entry) > 1) {
r = file_register_hardlink(a, file);
if (r != ARCHIVE_OK)
return (r);
if (archive_entry_hardlink(file->entry) != NULL) {
archive_entry_unset_size(file->entry);
return (r2);
}
}
/* Save a offset of current file in temporary file. */
file->data.temp_offset = xar->temp_offset;
file->data.size = archive_entry_size(file->entry);
file->data.compression = xar->opt_compression;
xar->bytes_remaining = archive_entry_size(file->entry);
checksum_init(&(xar->a_sumwrk), xar->opt_sumalg);
checksum_init(&(xar->e_sumwrk), xar->opt_sumalg);
r = xar_compression_init_encoder(a);
if (r != ARCHIVE_OK)
return (r);
else
return (r2);
}
static int
write_to_temp(struct archive_write *a, const void *buff, size_t s)
{
struct xar *xar;
const unsigned char *p;
ssize_t ws;
xar = (struct xar *)a->format_data;
p = (const unsigned char *)buff;
while (s) {
ws = write(xar->temp_fd, p, s);
if (ws < 0) {
archive_set_error(&(a->archive), errno,
"fwrite function failed");
return (ARCHIVE_FATAL);
}
s -= ws;
p += ws;
xar->temp_offset += ws;
}
return (ARCHIVE_OK);
}
static ssize_t
xar_write_data(struct archive_write *a, const void *buff, size_t s)
{
struct xar *xar;
enum la_zaction run;
size_t size = 0;
size_t rsize;
int r;
xar = (struct xar *)a->format_data;
if (s > xar->bytes_remaining)
s = (size_t)xar->bytes_remaining;
if (s == 0 || xar->cur_file == NULL)
return (0);
if (xar->cur_file->data.compression == NONE) {
checksum_update(&(xar->e_sumwrk), buff, s);
checksum_update(&(xar->a_sumwrk), buff, s);
size = rsize = s;
} else {
xar->stream.next_in = (const unsigned char *)buff;
xar->stream.avail_in = s;
if (xar->bytes_remaining > s)
run = ARCHIVE_Z_RUN;
else
run = ARCHIVE_Z_FINISH;
/* Compress file data. */
for (;;) {
r = compression_code(&(a->archive), &(xar->stream),
run);
if (r != ARCHIVE_OK && r != ARCHIVE_EOF)
return (ARCHIVE_FATAL);
if (xar->stream.avail_out == 0 ||
run == ARCHIVE_Z_FINISH) {
size = sizeof(xar->wbuff) -
xar->stream.avail_out;
checksum_update(&(xar->a_sumwrk), xar->wbuff,
size);
xar->cur_file->data.length += size;
if (write_to_temp(a, xar->wbuff,
size) != ARCHIVE_OK)
return (ARCHIVE_FATAL);
if (r == ARCHIVE_OK) {
/* Output buffer was full */
xar->stream.next_out = xar->wbuff;
xar->stream.avail_out =
sizeof(xar->wbuff);
} else {
/* ARCHIVE_EOF - We are done */
break;
}
} else {
/* Compressor wants more input */
break;
}
}
rsize = s - xar->stream.avail_in;
checksum_update(&(xar->e_sumwrk), buff, rsize);
}
#if !defined(_WIN32) || defined(__CYGWIN__)
if (xar->bytes_remaining ==
(uint64_t)archive_entry_size(xar->cur_file->entry)) {
/*
* Get the path of a shell script if so.
*/
const unsigned char *b = (const unsigned char *)buff;
archive_string_empty(&(xar->cur_file->script));
if (rsize > 2 && b[0] == '#' && b[1] == '!') {
size_t i, end, off;
off = 2;
if (b[off] == ' ')
off++;
#ifdef PATH_MAX
if ((rsize - off) > PATH_MAX)
end = off + PATH_MAX;
else
#endif
end = rsize;
/* Find the end of a script path. */
for (i = off; i < end && b[i] != '\0' &&
b[i] != '\n' && b[i] != '\r' &&
b[i] != ' ' && b[i] != '\t'; i++)
;
archive_strncpy(&(xar->cur_file->script), b + off,
i - off);
}
}
#endif
if (xar->cur_file->data.compression == NONE) {
if (write_to_temp(a, buff, size) != ARCHIVE_OK)
return (ARCHIVE_FATAL);
xar->cur_file->data.length += size;
}
xar->bytes_remaining -= rsize;
return (rsize);
}
static int
xar_finish_entry(struct archive_write *a)
{
struct xar *xar;
struct file *file;
size_t s;
ssize_t w;
xar = (struct xar *)a->format_data;
if (xar->cur_file == NULL)
return (ARCHIVE_OK);
while (xar->bytes_remaining > 0) {
s = (size_t)xar->bytes_remaining;
if (s > a->null_length)
s = a->null_length;
w = xar_write_data(a, a->nulls, s);
if (w > 0)
xar->bytes_remaining -= w;
else
return (w);
}
file = xar->cur_file;
checksum_final(&(xar->e_sumwrk), &(file->data.e_sum));
checksum_final(&(xar->a_sumwrk), &(file->data.a_sum));
xar->cur_file = NULL;
return (ARCHIVE_OK);
}
static int
xmlwrite_string_attr(struct archive_write *a, xmlTextWriterPtr writer,
const char *key, const char *value,
const char *attrkey, const char *attrvalue)
{
int r;
r = xmlTextWriterStartElement(writer, BAD_CAST_CONST(key));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterStartElement() failed: %d", r);
return (ARCHIVE_FATAL);
}
if (attrkey != NULL && attrvalue != NULL) {
r = xmlTextWriterWriteAttribute(writer,
BAD_CAST_CONST(attrkey), BAD_CAST_CONST(attrvalue));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterWriteAttribute() failed: %d", r);
return (ARCHIVE_FATAL);
}
}
if (value != NULL) {
r = xmlTextWriterWriteString(writer, BAD_CAST_CONST(value));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterWriteString() failed: %d", r);
return (ARCHIVE_FATAL);
}
}
r = xmlTextWriterEndElement(writer);
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterEndElement() failed: %d", r);
return (ARCHIVE_FATAL);
}
return (ARCHIVE_OK);
}
static int
xmlwrite_string(struct archive_write *a, xmlTextWriterPtr writer,
const char *key, const char *value)
{
int r;
if (value == NULL)
return (ARCHIVE_OK);
r = xmlTextWriterStartElement(writer, BAD_CAST_CONST(key));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterStartElement() failed: %d", r);
return (ARCHIVE_FATAL);
}
if (value != NULL) {
r = xmlTextWriterWriteString(writer, BAD_CAST_CONST(value));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterWriteString() failed: %d", r);
return (ARCHIVE_FATAL);
}
}
r = xmlTextWriterEndElement(writer);
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterEndElement() failed: %d", r);
return (ARCHIVE_FATAL);
}
return (ARCHIVE_OK);
}
static int
xmlwrite_fstring(struct archive_write *a, xmlTextWriterPtr writer,
const char *key, const char *fmt, ...)
{
struct xar *xar;
va_list ap;
xar = (struct xar *)a->format_data;
va_start(ap, fmt);
archive_string_empty(&xar->vstr);
archive_string_vsprintf(&xar->vstr, fmt, ap);
va_end(ap);
return (xmlwrite_string(a, writer, key, xar->vstr.s));
}
static int
xmlwrite_time(struct archive_write *a, xmlTextWriterPtr writer,
const char *key, time_t t, int z)
{
char timestr[100];
struct tm tm;
#if defined(HAVE__GMTIME64_S)
__time64_t tmptime;
#endif
#if defined(HAVE_GMTIME_R)
gmtime_r(&t, &tm);
#elif defined(HAVE__GMTIME64_S)
tmptime = t;
_gmtime64_s(&tm, &tmptime);
#else
memcpy(&tm, gmtime(&t), sizeof(tm));
#endif
memset(&timestr, 0, sizeof(timestr));
/* Do not use %F and %T for portability. */
strftime(timestr, sizeof(timestr), "%Y-%m-%dT%H:%M:%S", &tm);
if (z)
strcat(timestr, "Z");
return (xmlwrite_string(a, writer, key, timestr));
}
static int
xmlwrite_mode(struct archive_write *a, xmlTextWriterPtr writer,
const char *key, mode_t mode)
{
char ms[5];
ms[0] = '0';
ms[1] = '0' + ((mode >> 6) & 07);
ms[2] = '0' + ((mode >> 3) & 07);
ms[3] = '0' + (mode & 07);
ms[4] = '\0';
return (xmlwrite_string(a, writer, key, ms));
}
static int
xmlwrite_sum(struct archive_write *a, xmlTextWriterPtr writer,
const char *key, struct chksumval *sum)
{
const char *algname;
int algsize;
char buff[MAX_SUM_SIZE*2 + 1];
char *p;
unsigned char *s;
int i, r;
if (sum->len > 0) {
algname = getalgname(sum->alg);
algsize = getalgsize(sum->alg);
if (algname != NULL) {
const char *hex = "0123456789abcdef";
p = buff;
s = sum->val;
for (i = 0; i < algsize; i++) {
*p++ = hex[(*s >> 4)];
*p++ = hex[(*s & 0x0f)];
s++;
}
*p = '\0';
r = xmlwrite_string_attr(a, writer,
key, buff,
"style", algname);
if (r < 0)
return (ARCHIVE_FATAL);
}
}
return (ARCHIVE_OK);
}
static int
xmlwrite_heap(struct archive_write *a, xmlTextWriterPtr writer,
struct heap_data *heap)
{
const char *encname;
int r;
r = xmlwrite_fstring(a, writer, "length", "%ju", heap->length);
if (r < 0)
return (ARCHIVE_FATAL);
r = xmlwrite_fstring(a, writer, "offset", "%ju", heap->temp_offset);
if (r < 0)
return (ARCHIVE_FATAL);
r = xmlwrite_fstring(a, writer, "size", "%ju", heap->size);
if (r < 0)
return (ARCHIVE_FATAL);
switch (heap->compression) {
case GZIP:
encname = "application/x-gzip"; break;
case BZIP2:
encname = "application/x-bzip2"; break;
case LZMA:
encname = "application/x-lzma"; break;
case XZ:
encname = "application/x-xz"; break;
default:
encname = "application/octet-stream"; break;
}
r = xmlwrite_string_attr(a, writer, "encoding", NULL,
"style", encname);
if (r < 0)
return (ARCHIVE_FATAL);
r = xmlwrite_sum(a, writer, "archived-checksum", &(heap->a_sum));
if (r < 0)
return (ARCHIVE_FATAL);
r = xmlwrite_sum(a, writer, "extracted-checksum", &(heap->e_sum));
if (r < 0)
return (ARCHIVE_FATAL);
return (ARCHIVE_OK);
}
/*
* xar utility records fflags as following xml elements:
* <flags>
* <UserNoDump/>
* .....
* </flags>
* or
* <ext2>
* <NoDump/>
* .....
* </ext2>
* If xar is running on BSD platform, records <flags>..</flags>;
* if xar is running on linux platform, records <ext2>..</ext2>;
* otherwise does not record.
*
* Our implements records both <flags> and <ext2> if it's necessary.
*/
static int
make_fflags_entry(struct archive_write *a, xmlTextWriterPtr writer,
const char *element, const char *fflags_text)
{
static const struct flagentry {
const char *name;
const char *xarname;
}
flagbsd[] = {
{ "sappnd", "SystemAppend"},
{ "sappend", "SystemAppend"},
{ "arch", "SystemArchived"},
{ "archived", "SystemArchived"},
{ "schg", "SystemImmutable"},
{ "schange", "SystemImmutable"},
{ "simmutable", "SystemImmutable"},
{ "nosunlnk", "SystemNoUnlink"},
{ "nosunlink", "SystemNoUnlink"},
{ "snapshot", "SystemSnapshot"},
{ "uappnd", "UserAppend"},
{ "uappend", "UserAppend"},
{ "uchg", "UserImmutable"},
{ "uchange", "UserImmutable"},
{ "uimmutable", "UserImmutable"},
{ "nodump", "UserNoDump"},
{ "noopaque", "UserOpaque"},
{ "nouunlnk", "UserNoUnlink"},
{ "nouunlink", "UserNoUnlink"},
{ NULL, NULL}
},
flagext2[] = {
{ "sappnd", "AppendOnly"},
{ "sappend", "AppendOnly"},
{ "schg", "Immutable"},
{ "schange", "Immutable"},
{ "simmutable", "Immutable"},
{ "nodump", "NoDump"},
{ "nouunlnk", "Undelete"},
{ "nouunlink", "Undelete"},
{ "btree", "BTree"},
{ "comperr", "CompError"},
{ "compress", "Compress"},
{ "noatime", "NoAtime"},
{ "compdirty", "CompDirty"},
{ "comprblk", "CompBlock"},
{ "dirsync", "DirSync"},
{ "hashidx", "HashIndexed"},
{ "imagic", "iMagic"},
{ "journal", "Journaled"},
{ "securedeletion", "SecureDeletion"},
{ "sync", "Synchronous"},
{ "notail", "NoTail"},
{ "topdir", "TopDir"},
{ "reserved", "Reserved"},
{ NULL, NULL}
};
const struct flagentry *fe, *flagentry;
#define FLAGENTRY_MAXSIZE ((sizeof(flagbsd)+sizeof(flagext2))/sizeof(flagbsd))
const struct flagentry *avail[FLAGENTRY_MAXSIZE];
const char *p;
int i, n, r;
if (strcmp(element, "ext2") == 0)
flagentry = flagext2;
else
flagentry = flagbsd;
n = 0;
p = fflags_text;
do {
const char *cp;
cp = strchr(p, ',');
if (cp == NULL)
cp = p + strlen(p);
for (fe = flagentry; fe->name != NULL; fe++) {
if (fe->name[cp - p] != '\0'
|| p[0] != fe->name[0])
continue;
if (strncmp(p, fe->name, cp - p) == 0) {
avail[n++] = fe;
break;
}
}
if (*cp == ',')
p = cp + 1;
else
p = NULL;
} while (p != NULL);
if (n > 0) {
r = xmlTextWriterStartElement(writer, BAD_CAST_CONST(element));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterStartElement() failed: %d", r);
return (ARCHIVE_FATAL);
}
for (i = 0; i < n; i++) {
r = xmlwrite_string(a, writer,
avail[i]->xarname, NULL);
if (r != ARCHIVE_OK)
return (r);
}
r = xmlTextWriterEndElement(writer);
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterEndElement() failed: %d", r);
return (ARCHIVE_FATAL);
}
}
return (ARCHIVE_OK);
}
static int
make_file_entry(struct archive_write *a, xmlTextWriterPtr writer,
struct file *file)
{
struct xar *xar;
const char *filetype, *filelink, *fflags;
struct archive_string linkto;
struct heap_data *heap;
unsigned char *tmp;
const char *p;
size_t len;
int r, r2, l, ll;
xar = (struct xar *)a->format_data;
r2 = ARCHIVE_OK;
/*
* Make a file name entry, "<name>".
*/
l = ll = archive_strlen(&(file->basename));
tmp = malloc(l);
if (tmp == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate memory");
return (ARCHIVE_FATAL);
}
r = UTF8Toisolat1(tmp, &l, BAD_CAST(file->basename.s), &ll);
free(tmp);
if (r < 0) {
r = xmlTextWriterStartElement(writer, BAD_CAST("name"));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterStartElement() failed: %d", r);
return (ARCHIVE_FATAL);
}
r = xmlTextWriterWriteAttribute(writer,
BAD_CAST("enctype"), BAD_CAST("base64"));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterWriteAttribute() failed: %d", r);
return (ARCHIVE_FATAL);
}
r = xmlTextWriterWriteBase64(writer, file->basename.s,
0, archive_strlen(&(file->basename)));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterWriteBase64() failed: %d", r);
return (ARCHIVE_FATAL);
}
r = xmlTextWriterEndElement(writer);
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterEndElement() failed: %d", r);
return (ARCHIVE_FATAL);
}
} else {
r = xmlwrite_string(a, writer, "name", file->basename.s);
if (r < 0)
return (ARCHIVE_FATAL);
}
/*
* Make a file type entry, "<type>".
*/
filelink = NULL;
archive_string_init(&linkto);
switch (archive_entry_filetype(file->entry)) {
case AE_IFDIR:
filetype = "directory"; break;
case AE_IFLNK:
filetype = "symlink"; break;
case AE_IFCHR:
filetype = "character special"; break;
case AE_IFBLK:
filetype = "block special"; break;
case AE_IFSOCK:
filetype = "socket"; break;
case AE_IFIFO:
filetype = "fifo"; break;
case AE_IFREG:
default:
if (file->hardlink_target != NULL) {
filetype = "hardlink";
filelink = "link";
if (file->hardlink_target == file)
archive_strcpy(&linkto, "original");
else
archive_string_sprintf(&linkto, "%d",
file->hardlink_target->id);
} else
filetype = "file";
break;
}
r = xmlwrite_string_attr(a, writer, "type", filetype,
filelink, linkto.s);
archive_string_free(&linkto);
if (r < 0)
return (ARCHIVE_FATAL);
/*
* On a virtual directory, we record "name" and "type" only.
*/
if (file->virtual)
return (ARCHIVE_OK);
switch (archive_entry_filetype(file->entry)) {
case AE_IFLNK:
/*
* xar utility has checked a file type, which
* a symbolic-link file has referenced.
* For example:
* <link type="directory">../ref/</link>
* The symlink target file is "../ref/" and its
* file type is a directory.
*
* <link type="file">../f</link>
* The symlink target file is "../f" and its
* file type is a regular file.
*
* But our implementation cannot do it, and then we
* always record that a attribute "type" is "broken",
* for example:
* <link type="broken">foo/bar</link>
* It means "foo/bar" is not reachable.
*/
r = xmlwrite_string_attr(a, writer, "link",
file->symlink.s,
"type", "broken");
if (r < 0)
return (ARCHIVE_FATAL);
break;
case AE_IFCHR:
case AE_IFBLK:
r = xmlTextWriterStartElement(writer, BAD_CAST("device"));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterStartElement() failed: %d", r);
return (ARCHIVE_FATAL);
}
r = xmlwrite_fstring(a, writer, "major",
"%d", archive_entry_rdevmajor(file->entry));
if (r < 0)
return (ARCHIVE_FATAL);
r = xmlwrite_fstring(a, writer, "minor",
"%d", archive_entry_rdevminor(file->entry));
if (r < 0)
return (ARCHIVE_FATAL);
r = xmlTextWriterEndElement(writer);
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterEndElement() failed: %d", r);
return (ARCHIVE_FATAL);
}
break;
default:
break;
}
/*
* Make a inode entry, "<inode>".
*/
r = xmlwrite_fstring(a, writer, "inode",
"%jd", archive_entry_ino64(file->entry));
if (r < 0)
return (ARCHIVE_FATAL);
if (archive_entry_dev(file->entry) != 0) {
r = xmlwrite_fstring(a, writer, "deviceno",
"%d", archive_entry_dev(file->entry));
if (r < 0)
return (ARCHIVE_FATAL);
}
/*
* Make a file mode entry, "<mode>".
*/
r = xmlwrite_mode(a, writer, "mode",
archive_entry_mode(file->entry));
if (r < 0)
return (ARCHIVE_FATAL);
/*
* Make a user entry, "<uid>" and "<user>.
*/
r = xmlwrite_fstring(a, writer, "uid",
"%d", archive_entry_uid(file->entry));
if (r < 0)
return (ARCHIVE_FATAL);
r = archive_entry_uname_l(file->entry, &p, &len, xar->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 UTF-8",
archive_entry_uname(file->entry));
r2 = ARCHIVE_WARN;
}
if (len > 0) {
r = xmlwrite_string(a, writer, "user", p);
if (r < 0)
return (ARCHIVE_FATAL);
}
/*
* Make a group entry, "<gid>" and "<group>.
*/
r = xmlwrite_fstring(a, writer, "gid",
"%d", archive_entry_gid(file->entry));
if (r < 0)
return (ARCHIVE_FATAL);
r = archive_entry_gname_l(file->entry, &p, &len, xar->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 UTF-8",
archive_entry_gname(file->entry));
r2 = ARCHIVE_WARN;
}
if (len > 0) {
r = xmlwrite_string(a, writer, "group", p);
if (r < 0)
return (ARCHIVE_FATAL);
}
/*
* Make a ctime entry, "<ctime>".
*/
if (archive_entry_ctime_is_set(file->entry)) {
r = xmlwrite_time(a, writer, "ctime",
archive_entry_ctime(file->entry), 1);
if (r < 0)
return (ARCHIVE_FATAL);
}
/*
* Make a mtime entry, "<mtime>".
*/
if (archive_entry_mtime_is_set(file->entry)) {
r = xmlwrite_time(a, writer, "mtime",
archive_entry_mtime(file->entry), 1);
if (r < 0)
return (ARCHIVE_FATAL);
}
/*
* Make a atime entry, "<atime>".
*/
if (archive_entry_atime_is_set(file->entry)) {
r = xmlwrite_time(a, writer, "atime",
archive_entry_atime(file->entry), 1);
if (r < 0)
return (ARCHIVE_FATAL);
}
/*
* Make fflags entries, "<flags>" and "<ext2>".
*/
fflags = archive_entry_fflags_text(file->entry);
if (fflags != NULL) {
r = make_fflags_entry(a, writer, "flags", fflags);
if (r < 0)
return (r);
r = make_fflags_entry(a, writer, "ext2", fflags);
if (r < 0)
return (r);
}
/*
* Make extended attribute entries, "<ea>".
*/
archive_entry_xattr_reset(file->entry);
for (heap = file->xattr.first; heap != NULL; heap = heap->next) {
const char *name;
const void *value;
size_t size;
archive_entry_xattr_next(file->entry,
&name, &value, &size);
r = xmlTextWriterStartElement(writer, BAD_CAST("ea"));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterStartElement() failed: %d", r);
return (ARCHIVE_FATAL);
}
r = xmlTextWriterWriteFormatAttribute(writer,
BAD_CAST("id"), "%d", heap->id);
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterWriteAttribute() failed: %d", r);
return (ARCHIVE_FATAL);
}
r = xmlwrite_heap(a, writer, heap);
if (r < 0)
return (ARCHIVE_FATAL);
r = xmlwrite_string(a, writer, "name", name);
if (r < 0)
return (ARCHIVE_FATAL);
r = xmlTextWriterEndElement(writer);
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterEndElement() failed: %d", r);
return (ARCHIVE_FATAL);
}
}
/*
* Make a file data entry, "<data>".
*/
if (file->data.length > 0) {
r = xmlTextWriterStartElement(writer, BAD_CAST("data"));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterStartElement() failed: %d", r);
return (ARCHIVE_FATAL);
}
r = xmlwrite_heap(a, writer, &(file->data));
if (r < 0)
return (ARCHIVE_FATAL);
r = xmlTextWriterEndElement(writer);
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterEndElement() failed: %d", r);
return (ARCHIVE_FATAL);
}
}
if (archive_strlen(&file->script) > 0) {
r = xmlTextWriterStartElement(writer, BAD_CAST("content"));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterStartElement() failed: %d", r);
return (ARCHIVE_FATAL);
}
r = xmlwrite_string(a, writer,
"interpreter", file->script.s);
if (r < 0)
return (ARCHIVE_FATAL);
r = xmlwrite_string(a, writer, "type", "script");
if (r < 0)
return (ARCHIVE_FATAL);
r = xmlTextWriterEndElement(writer);
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterEndElement() failed: %d", r);
return (ARCHIVE_FATAL);
}
}
return (r2);
}
/*
* Make the TOC
*/
static int
make_toc(struct archive_write *a)
{
struct xar *xar;
struct file *np;
xmlBufferPtr bp;
xmlTextWriterPtr writer;
int algsize;
int r, ret;
xar = (struct xar *)a->format_data;
ret = ARCHIVE_FATAL;
/*
* Initialize xml writer.
*/
writer = NULL;
bp = xmlBufferCreate();
if (bp == NULL) {
archive_set_error(&a->archive, ENOMEM,
"xmlBufferCreate() "
"couldn't create xml buffer");
goto exit_toc;
}
writer = xmlNewTextWriterMemory(bp, 0);
if (writer == NULL) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlNewTextWriterMemory() "
"couldn't create xml writer");
goto exit_toc;
}
r = xmlTextWriterStartDocument(writer, "1.0", "UTF-8", NULL);
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterStartDocument() failed: %d", r);
goto exit_toc;
}
r = xmlTextWriterSetIndent(writer, 4);
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterSetIndent() failed: %d", r);
goto exit_toc;
}
/*
* Start recording TOC
*/
r = xmlTextWriterStartElement(writer, BAD_CAST("xar"));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterStartElement() failed: %d", r);
goto exit_toc;
}
r = xmlTextWriterStartElement(writer, BAD_CAST("toc"));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterStartDocument() failed: %d", r);
goto exit_toc;
}
/*
* Record the creation time of the archive file.
*/
r = xmlwrite_time(a, writer, "creation-time", time(NULL), 0);
if (r < 0)
goto exit_toc;
/*
* Record the checksum value of TOC
*/
algsize = getalgsize(xar->opt_toc_sumalg);
if (algsize) {
/*
* Record TOC checksum
*/
r = xmlTextWriterStartElement(writer, BAD_CAST("checksum"));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterStartElement() failed: %d", r);
goto exit_toc;
}
r = xmlTextWriterWriteAttribute(writer, BAD_CAST("style"),
BAD_CAST_CONST(getalgname(xar->opt_toc_sumalg)));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterWriteAttribute() failed: %d", r);
goto exit_toc;
}
/*
* Record the offset of the value of checksum of TOC
*/
r = xmlwrite_string(a, writer, "offset", "0");
if (r < 0)
goto exit_toc;
/*
* Record the size of the value of checksum of TOC
*/
r = xmlwrite_fstring(a, writer, "size", "%d", algsize);
if (r < 0)
goto exit_toc;
r = xmlTextWriterEndElement(writer);
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterEndElement() failed: %d", r);
goto exit_toc;
}
}
np = xar->root;
do {
if (np != np->parent) {
r = make_file_entry(a, writer, np);
if (r != ARCHIVE_OK)
goto exit_toc;
}
if (np->dir && np->children.first != NULL) {
/* Enter to sub directories. */
np = np->children.first;
r = xmlTextWriterStartElement(writer,
BAD_CAST("file"));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterStartElement() "
"failed: %d", r);
goto exit_toc;
}
r = xmlTextWriterWriteFormatAttribute(
writer, BAD_CAST("id"), "%d", np->id);
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterWriteAttribute() "
"failed: %d", r);
goto exit_toc;
}
continue;
}
while (np != np->parent) {
r = xmlTextWriterEndElement(writer);
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterEndElement() "
"failed: %d", r);
goto exit_toc;
}
if (np->chnext == NULL) {
/* Return to the parent directory. */
np = np->parent;
} else {
np = np->chnext;
r = xmlTextWriterStartElement(writer,
BAD_CAST("file"));
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterStartElement() "
"failed: %d", r);
goto exit_toc;
}
r = xmlTextWriterWriteFormatAttribute(
writer, BAD_CAST("id"), "%d", np->id);
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterWriteAttribute() "
"failed: %d", r);
goto exit_toc;
}
break;
}
}
} while (np != np->parent);
r = xmlTextWriterEndDocument(writer);
if (r < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"xmlTextWriterEndDocument() failed: %d", r);
goto exit_toc;
}
#if DEBUG_PRINT_TOC
fprintf(stderr, "\n---TOC-- %d bytes --\n%s\n",
strlen((const char *)bp->content), bp->content);
#endif
/*
* Compress the TOC and calculate the sum of the TOC.
*/
xar->toc.temp_offset = xar->temp_offset;
xar->toc.size = bp->use;
checksum_init(&(xar->a_sumwrk), xar->opt_toc_sumalg);
r = compression_init_encoder_gzip(&(a->archive),
&(xar->stream), 6, 1);
if (r != ARCHIVE_OK)
goto exit_toc;
xar->stream.next_in = bp->content;
xar->stream.avail_in = bp->use;
xar->stream.total_in = 0;
xar->stream.next_out = xar->wbuff;
xar->stream.avail_out = sizeof(xar->wbuff);
xar->stream.total_out = 0;
for (;;) {
size_t size;
r = compression_code(&(a->archive),
&(xar->stream), ARCHIVE_Z_FINISH);
if (r != ARCHIVE_OK && r != ARCHIVE_EOF)
goto exit_toc;
size = sizeof(xar->wbuff) - xar->stream.avail_out;
checksum_update(&(xar->a_sumwrk), xar->wbuff, size);
if (write_to_temp(a, xar->wbuff, size) != ARCHIVE_OK)
goto exit_toc;
if (r == ARCHIVE_EOF)
break;
xar->stream.next_out = xar->wbuff;
xar->stream.avail_out = sizeof(xar->wbuff);
}
r = compression_end(&(a->archive), &(xar->stream));
if (r != ARCHIVE_OK)
goto exit_toc;
xar->toc.length = xar->stream.total_out;
xar->toc.compression = GZIP;
checksum_final(&(xar->a_sumwrk), &(xar->toc.a_sum));
ret = ARCHIVE_OK;
exit_toc:
if (writer)
xmlFreeTextWriter(writer);
if (bp)
xmlBufferFree(bp);
return (ret);
}
static int
flush_wbuff(struct archive_write *a)
{
struct xar *xar;
int r;
size_t s;
xar = (struct xar *)a->format_data;
s = sizeof(xar->wbuff) - xar->wbuff_remaining;
r = __archive_write_output(a, xar->wbuff, s);
if (r != ARCHIVE_OK)
return (r);
xar->wbuff_remaining = sizeof(xar->wbuff);
return (r);
}
static int
copy_out(struct archive_write *a, uint64_t offset, uint64_t length)
{
struct xar *xar;
int r;
xar = (struct xar *)a->format_data;
if (lseek(xar->temp_fd, offset, SEEK_SET) < 0) {
archive_set_error(&(a->archive), errno, "lseek failed");
return (ARCHIVE_FATAL);
}
while (length) {
size_t rsize;
ssize_t rs;
unsigned char *wb;
if (length > xar->wbuff_remaining)
rsize = xar->wbuff_remaining;
else
rsize = (size_t)length;
wb = xar->wbuff + (sizeof(xar->wbuff) - xar->wbuff_remaining);
rs = read(xar->temp_fd, wb, rsize);
if (rs < 0) {
archive_set_error(&(a->archive), errno,
"Can't read temporary file(%jd)",
(intmax_t)rs);
return (ARCHIVE_FATAL);
}
if (rs == 0) {
archive_set_error(&(a->archive), 0,
"Truncated xar archive");
return (ARCHIVE_FATAL);
}
xar->wbuff_remaining -= rs;
length -= rs;
if (xar->wbuff_remaining == 0) {
r = flush_wbuff(a);
if (r != ARCHIVE_OK)
return (r);
}
}
return (ARCHIVE_OK);
}
static int
xar_close(struct archive_write *a)
{
struct xar *xar;
unsigned char *wb;
uint64_t length;
int r;
xar = (struct xar *)a->format_data;
/* Empty! */
if (xar->root->children.first == NULL)
return (ARCHIVE_OK);
/* Save the length of all file extended attributes and contents. */
length = xar->temp_offset;
/* Connect hardlinked files */
file_connect_hardlink_files(xar);
/* Make the TOC */
r = make_toc(a);
if (r != ARCHIVE_OK)
return (r);
/*
* Make the xar header on wbuff(write buffer).
*/
wb = xar->wbuff;
xar->wbuff_remaining = sizeof(xar->wbuff);
archive_be32enc(&wb[0], HEADER_MAGIC);
archive_be16enc(&wb[4], HEADER_SIZE);
archive_be16enc(&wb[6], HEADER_VERSION);
archive_be64enc(&wb[8], xar->toc.length);
archive_be64enc(&wb[16], xar->toc.size);
archive_be32enc(&wb[24], xar->toc.a_sum.alg);
xar->wbuff_remaining -= HEADER_SIZE;
/*
* Write the TOC
*/
r = copy_out(a, xar->toc.temp_offset, xar->toc.length);
if (r != ARCHIVE_OK)
return (r);
/* Write the checksum value of the TOC. */
if (xar->toc.a_sum.len) {
if (xar->wbuff_remaining < xar->toc.a_sum.len) {
r = flush_wbuff(a);
if (r != ARCHIVE_OK)
return (r);
}
wb = xar->wbuff + (sizeof(xar->wbuff) - xar->wbuff_remaining);
memcpy(wb, xar->toc.a_sum.val, xar->toc.a_sum.len);
xar->wbuff_remaining -= xar->toc.a_sum.len;
}
/*
* Write all file extended attributes and contents.
*/
r = copy_out(a, xar->toc.a_sum.len, length);
if (r != ARCHIVE_OK)
return (r);
r = flush_wbuff(a);
return (r);
}
static int
xar_free(struct archive_write *a)
{
struct xar *xar;
xar = (struct xar *)a->format_data;
/* Close the temporary file. */
if (xar->temp_fd >= 0)
close(xar->temp_fd);
archive_string_free(&(xar->cur_dirstr));
archive_string_free(&(xar->tstr));
archive_string_free(&(xar->vstr));
file_free_hardlinks(xar);
file_free_register(xar);
compression_end(&(a->archive), &(xar->stream));
free(xar);
return (ARCHIVE_OK);
}
static int
file_cmp_node(const struct archive_rb_node *n1,
const struct archive_rb_node *n2)
{
const struct file *f1 = (const struct file *)n1;
const struct file *f2 = (const struct file *)n2;
return (strcmp(f1->basename.s, f2->basename.s));
}
static int
file_cmp_key(const struct archive_rb_node *n, const void *key)
{
const struct file *f = (const struct file *)n;
return (strcmp(f->basename.s, (const char *)key));
}
static struct file *
file_new(struct archive_write *a, struct archive_entry *entry)
{
struct file *file;
static const struct archive_rb_tree_ops rb_ops = {
file_cmp_node, file_cmp_key
};
file = calloc(1, sizeof(*file));
if (file == NULL)
return (NULL);
if (entry != NULL)
file->entry = archive_entry_clone(entry);
else
file->entry = archive_entry_new2(&a->archive);
if (file->entry == NULL) {
free(file);
return (NULL);
}
__archive_rb_tree_init(&(file->rbtree), &rb_ops);
file->children.first = NULL;
file->children.last = &(file->children.first);
file->xattr.first = NULL;
file->xattr.last = &(file->xattr.first);
archive_string_init(&(file->parentdir));
archive_string_init(&(file->basename));
archive_string_init(&(file->symlink));
archive_string_init(&(file->script));
if (entry != NULL && archive_entry_filetype(entry) == AE_IFDIR)
file->dir = 1;
return (file);
}
static void
file_free(struct file *file)
{
struct heap_data *heap, *next_heap;
heap = file->xattr.first;
while (heap != NULL) {
next_heap = heap->next;
free(heap);
heap = next_heap;
}
archive_string_free(&(file->parentdir));
archive_string_free(&(file->basename));
archive_string_free(&(file->symlink));
archive_string_free(&(file->script));
archive_entry_free(file->entry);
free(file);
}
static struct file *
file_create_virtual_dir(struct archive_write *a, struct xar *xar,
const char *pathname)
{
struct file *file;
(void)xar; /* UNUSED */
file = file_new(a, NULL);
if (file == NULL)
return (NULL);
archive_entry_set_pathname(file->entry, pathname);
archive_entry_set_mode(file->entry, 0555 | AE_IFDIR);
file->dir = 1;
file->virtual = 1;
return (file);
}
static int
file_add_child_tail(struct file *parent, struct file *child)
{
if (!__archive_rb_tree_insert_node(
&(parent->rbtree), (struct archive_rb_node *)child))
return (0);
child->chnext = NULL;
*parent->children.last = child;
parent->children.last = &(child->chnext);
child->parent = parent;
return (1);
}
/*
* Find a entry from `parent'
*/
static struct file *
file_find_child(struct file *parent, const char *child_name)
{
struct file *np;
np = (struct file *)__archive_rb_tree_find_node(
&(parent->rbtree), child_name);
return (np);
}
#if defined(_WIN32) || defined(__CYGWIN__)
static void
cleanup_backslash(char *utf8, size_t len)
{
/* Convert a path-separator from '\' to '/' */
while (*utf8 != '\0' && len) {
if (*utf8 == '\\')
*utf8 = '/';
++utf8;
--len;
}
}
#else
#define cleanup_backslash(p, len) /* nop */
#endif
/*
* Generate a parent directory name and a base name from a pathname.
*/
static int
file_gen_utility_names(struct archive_write *a, struct file *file)
{
struct xar *xar;
const char *pp;
char *p, *dirname, *slash;
size_t len;
int r = ARCHIVE_OK;
xar = (struct xar *)a->format_data;
archive_string_empty(&(file->parentdir));
archive_string_empty(&(file->basename));
archive_string_empty(&(file->symlink));
if (file->parent == file)/* virtual root */
return (ARCHIVE_OK);
if (archive_entry_pathname_l(file->entry, &pp, &len, xar->sconv)
!= 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 UTF-8",
archive_entry_pathname(file->entry));
r = ARCHIVE_WARN;
}
archive_strncpy(&(file->parentdir), pp, len);
len = file->parentdir.length;
p = dirname = file->parentdir.s;
/*
* Convert a path-separator from '\' to '/'
*/
cleanup_backslash(p, len);
/*
* Remove leading '/', '../' and './' elements
*/
while (*p) {
if (p[0] == '/') {
p++;
len--;
} else if (p[0] != '.')
break;
else if (p[1] == '.' && p[2] == '/') {
p += 3;
len -= 3;
} else if (p[1] == '/' || (p[1] == '.' && p[2] == '\0')) {
p += 2;
len -= 2;
} else if (p[1] == '\0') {
p++;
len--;
} else
break;
}
if (p != dirname) {
memmove(dirname, p, len+1);
p = dirname;
}
/*
* Remove "/","/." and "/.." elements from tail.
*/
while (len > 0) {
size_t ll = len;
if (p[len-1] == '/') {
p[len-1] = '\0';
len--;
}
if (len > 1 && p[len-2] == '/' && p[len-1] == '.') {
p[len-2] = '\0';
len -= 2;
}
if (len > 2 && p[len-3] == '/' && p[len-2] == '.' &&
p[len-1] == '.') {
p[len-3] = '\0';
len -= 3;
}
if (ll == len)
break;
}
while (*p) {
if (p[0] == '/') {
if (p[1] == '/')
/* Convert '//' --> '/' */
memmove(p, p+1, strlen(p+1) + 1);
else if (p[1] == '.' && p[2] == '/')
/* Convert '/./' --> '/' */
memmove(p, p+2, strlen(p+2) + 1);
else if (p[1] == '.' && p[2] == '.' && p[3] == '/') {
/* Convert 'dir/dir1/../dir2/'
* --> 'dir/dir2/'
*/
char *rp = p -1;
while (rp >= dirname) {
if (*rp == '/')
break;
--rp;
}
if (rp > dirname) {
strcpy(rp, p+3);
p = rp;
} else {
strcpy(dirname, p+4);
p = dirname;
}
} else
p++;
} else
p++;
}
p = dirname;
len = strlen(p);
if (archive_entry_filetype(file->entry) == AE_IFLNK) {
size_t len2;
/* Convert symlink name too. */
if (archive_entry_symlink_l(file->entry, &pp, &len2,
xar->sconv) != 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 symlink '%s' to UTF-8",
archive_entry_symlink(file->entry));
r = ARCHIVE_WARN;
}
archive_strncpy(&(file->symlink), pp, len2);
cleanup_backslash(file->symlink.s, file->symlink.length);
}
/*
* - Count up directory elements.
* - Find out the position which points the last position of
* path separator('/').
*/
slash = NULL;
for (; *p != '\0'; p++)
if (*p == '/')
slash = p;
if (slash == NULL) {
/* The pathname doesn't have a parent directory. */
file->parentdir.length = len;
archive_string_copy(&(file->basename), &(file->parentdir));
archive_string_empty(&(file->parentdir));
*file->parentdir.s = '\0';
return (r);
}
/* Make a basename from dirname and slash */
*slash = '\0';
file->parentdir.length = slash - dirname;
archive_strcpy(&(file->basename), slash + 1);
return (r);
}
static int
get_path_component(char *name, int n, const char *fn)
{
char *p;
int l;
p = strchr(fn, '/');
if (p == NULL) {
if ((l = strlen(fn)) == 0)
return (0);
} else
l = p - fn;
if (l > n -1)
return (-1);
memcpy(name, fn, l);
name[l] = '\0';
return (l);
}
/*
* Add a new entry into the tree.
*/
static int
file_tree(struct archive_write *a, struct file **filepp)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
char name[_MAX_FNAME];/* Included null terminator size. */
#elif defined(NAME_MAX) && NAME_MAX >= 255
char name[NAME_MAX+1];
#else
char name[256];
#endif
struct xar *xar = (struct xar *)a->format_data;
struct file *dent, *file, *np;
struct archive_entry *ent;
const char *fn, *p;
int l;
file = *filepp;
dent = xar->root;
if (file->parentdir.length > 0)
fn = p = file->parentdir.s;
else
fn = p = "";
/*
* If the path of the parent directory of `file' entry is
* the same as the path of `cur_dirent', add isoent to
* `cur_dirent'.
*/
if (archive_strlen(&(xar->cur_dirstr))
== archive_strlen(&(file->parentdir)) &&
strcmp(xar->cur_dirstr.s, fn) == 0) {
if (!file_add_child_tail(xar->cur_dirent, file)) {
np = (struct file *)__archive_rb_tree_find_node(
&(xar->cur_dirent->rbtree),
file->basename.s);
goto same_entry;
}
return (ARCHIVE_OK);
}
for (;;) {
l = get_path_component(name, sizeof(name), fn);
if (l == 0) {
np = NULL;
break;
}
if (l < 0) {
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"A name buffer is too small");
file_free(file);
*filepp = NULL;
return (ARCHIVE_FATAL);
}
np = file_find_child(dent, name);
if (np == NULL || fn[0] == '\0')
break;
/* Find next subdirectory. */
if (!np->dir) {
/* NOT Directory! */
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"`%s' is not directory, we cannot insert `%s' ",
archive_entry_pathname(np->entry),
archive_entry_pathname(file->entry));
file_free(file);
*filepp = NULL;
return (ARCHIVE_FAILED);
}
fn += l;
if (fn[0] == '/')
fn++;
dent = np;
}
if (np == NULL) {
/*
* Create virtual parent directories.
*/
while (fn[0] != '\0') {
struct file *vp;
struct archive_string as;
archive_string_init(&as);
archive_strncat(&as, p, fn - p + l);
if (as.s[as.length-1] == '/') {
as.s[as.length-1] = '\0';
as.length--;
}
vp = file_create_virtual_dir(a, xar, as.s);
if (vp == NULL) {
archive_string_free(&as);
archive_set_error(&a->archive, ENOMEM,
"Can't allocate memory");
file_free(file);
*filepp = NULL;
return (ARCHIVE_FATAL);
}
archive_string_free(&as);
if (file_gen_utility_names(a, vp) <= ARCHIVE_FAILED)
return (ARCHIVE_FATAL);
file_add_child_tail(dent, vp);
file_register(xar, vp);
np = vp;
fn += l;
if (fn[0] == '/')
fn++;
l = get_path_component(name, sizeof(name), fn);
if (l < 0) {
archive_string_free(&as);
archive_set_error(&a->archive,
ARCHIVE_ERRNO_MISC,
"A name buffer is too small");
file_free(file);
*filepp = NULL;
return (ARCHIVE_FATAL);
}
dent = np;
}
/* Found out the parent directory where isoent can be
* inserted. */
xar->cur_dirent = dent;
archive_string_empty(&(xar->cur_dirstr));
archive_string_ensure(&(xar->cur_dirstr),
archive_strlen(&(dent->parentdir)) +
archive_strlen(&(dent->basename)) + 2);
if (archive_strlen(&(dent->parentdir)) +
archive_strlen(&(dent->basename)) == 0)
xar->cur_dirstr.s[0] = 0;
else {
if (archive_strlen(&(dent->parentdir)) > 0) {
archive_string_copy(&(xar->cur_dirstr),
&(dent->parentdir));
archive_strappend_char(&(xar->cur_dirstr), '/');
}
archive_string_concat(&(xar->cur_dirstr),
&(dent->basename));
}
if (!file_add_child_tail(dent, file)) {
np = (struct file *)__archive_rb_tree_find_node(
&(dent->rbtree), file->basename.s);
goto same_entry;
}
return (ARCHIVE_OK);
}
same_entry:
/*
* We have already has the entry the filename of which is
* the same.
*/
if (archive_entry_filetype(np->entry) !=
archive_entry_filetype(file->entry)) {
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"Found duplicate entries `%s' and its file type is "
"different",
archive_entry_pathname(np->entry));
file_free(file);
*filepp = NULL;
return (ARCHIVE_FAILED);
}
/* Swap files. */
ent = np->entry;
np->entry = file->entry;
file->entry = ent;
np->virtual = 0;
file_free(file);
*filepp = np;
return (ARCHIVE_OK);
}
static void
file_register(struct xar *xar, struct file *file)
{
file->id = xar->file_idx++;
file->next = NULL;
*xar->file_list.last = file;
xar->file_list.last = &(file->next);
}
static void
file_init_register(struct xar *xar)
{
xar->file_list.first = NULL;
xar->file_list.last = &(xar->file_list.first);
}
static void
file_free_register(struct xar *xar)
{
struct file *file, *file_next;
file = xar->file_list.first;
while (file != NULL) {
file_next = file->next;
file_free(file);
file = file_next;
}
}
/*
* Register entry to get a hardlink target.
*/
static int
file_register_hardlink(struct archive_write *a, struct file *file)
{
struct xar *xar = (struct xar *)a->format_data;
struct hardlink *hl;
const char *pathname;
archive_entry_set_nlink(file->entry, 1);
pathname = archive_entry_hardlink(file->entry);
if (pathname == NULL) {
/* This `file` is a hardlink target. */
hl = malloc(sizeof(*hl));
if (hl == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate memory");
return (ARCHIVE_FATAL);
}
hl->nlink = 1;
/* A hardlink target must be the first position. */
file->hlnext = NULL;
hl->file_list.first = file;
hl->file_list.last = &(file->hlnext);
__archive_rb_tree_insert_node(&(xar->hardlink_rbtree),
(struct archive_rb_node *)hl);
} else {
hl = (struct hardlink *)__archive_rb_tree_find_node(
&(xar->hardlink_rbtree), pathname);
if (hl != NULL) {
/* Insert `file` entry into the tail. */
file->hlnext = NULL;
*hl->file_list.last = file;
hl->file_list.last = &(file->hlnext);
hl->nlink++;
}
archive_entry_unset_size(file->entry);
}
return (ARCHIVE_OK);
}
/*
* Hardlinked files have to have the same location of extent.
* We have to find out hardlink target entries for entries which
* have a hardlink target name.
*/
static void
file_connect_hardlink_files(struct xar *xar)
{
struct archive_rb_node *n;
struct hardlink *hl;
struct file *target, *nf;
ARCHIVE_RB_TREE_FOREACH(n, &(xar->hardlink_rbtree)) {
hl = (struct hardlink *)n;
/* The first entry must be a hardlink target. */
target = hl->file_list.first;
archive_entry_set_nlink(target->entry, hl->nlink);
if (hl->nlink > 1)
/* It means this file is a hardlink
* target itself. */
target->hardlink_target = target;
for (nf = target->hlnext;
nf != NULL; nf = nf->hlnext) {
nf->hardlink_target = target;
archive_entry_set_nlink(nf->entry, hl->nlink);
}
}
}
static int
file_hd_cmp_node(const struct archive_rb_node *n1,
const struct archive_rb_node *n2)
{
const struct hardlink *h1 = (const struct hardlink *)n1;
const struct hardlink *h2 = (const struct hardlink *)n2;
return (strcmp(archive_entry_pathname(h1->file_list.first->entry),
archive_entry_pathname(h2->file_list.first->entry)));
}
static int
file_hd_cmp_key(const struct archive_rb_node *n, const void *key)
{
const struct hardlink *h = (const struct hardlink *)n;
return (strcmp(archive_entry_pathname(h->file_list.first->entry),
(const char *)key));
}
static void
file_init_hardlinks(struct xar *xar)
{
static const struct archive_rb_tree_ops rb_ops = {
file_hd_cmp_node, file_hd_cmp_key,
};
__archive_rb_tree_init(&(xar->hardlink_rbtree), &rb_ops);
}
static void
file_free_hardlinks(struct xar *xar)
{
struct archive_rb_node *n, *tmp;
ARCHIVE_RB_TREE_FOREACH_SAFE(n, &(xar->hardlink_rbtree), tmp) {
__archive_rb_tree_remove_node(&(xar->hardlink_rbtree), n);
free(n);
}
}
static void
checksum_init(struct chksumwork *sumwrk, enum sumalg 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 void
checksum_final(struct chksumwork *sumwrk, struct chksumval *sumval)
{
switch (sumwrk->alg) {
case CKSUM_NONE:
sumval->len = 0;
break;
case CKSUM_SHA1:
archive_sha1_final(&(sumwrk->sha1ctx), sumval->val);
sumval->len = SHA1_SIZE;
break;
case CKSUM_MD5:
archive_md5_final(&(sumwrk->md5ctx), sumval->val);
sumval->len = MD5_SIZE;
break;
}
sumval->alg = sumwrk->alg;
}
#if !defined(HAVE_BZLIB_H) || !defined(BZ_CONFIG_ERROR) || !defined(HAVE_LZMA_H)
static int
compression_unsupported_encoder(struct archive *a,
struct la_zstream *lastrm, const char *name)
{
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"%s compression not supported on this platform", name);
lastrm->valid = 0;
lastrm->real_stream = NULL;
return (ARCHIVE_FAILED);
}
#endif
static int
compression_init_encoder_gzip(struct archive *a,
struct la_zstream *lastrm, int level, int withheader)
{
z_stream *strm;
if (lastrm->valid)
compression_end(a, lastrm);
strm = calloc(1, sizeof(*strm));
if (strm == NULL) {
archive_set_error(a, ENOMEM,
"Can't allocate memory for gzip stream");
return (ARCHIVE_FATAL);
}
/* zlib.h is not const-correct, so we need this one bit
* of ugly hackery to convert a const * pointer to
* a non-const pointer. */
strm->next_in = (Bytef *)(uintptr_t)(const void *)lastrm->next_in;
strm->avail_in = lastrm->avail_in;
strm->total_in = (uLong)lastrm->total_in;
strm->next_out = lastrm->next_out;
strm->avail_out = lastrm->avail_out;
strm->total_out = (uLong)lastrm->total_out;
if (deflateInit2(strm, level, Z_DEFLATED,
(withheader)?15:-15,
8, Z_DEFAULT_STRATEGY) != Z_OK) {
free(strm);
lastrm->real_stream = NULL;
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"Internal error initializing compression library");
return (ARCHIVE_FATAL);
}
lastrm->real_stream = strm;
lastrm->valid = 1;
lastrm->code = compression_code_gzip;
lastrm->end = compression_end_gzip;
return (ARCHIVE_OK);
}
static int
compression_code_gzip(struct archive *a,
struct la_zstream *lastrm, enum la_zaction action)
{
z_stream *strm;
int r;
strm = (z_stream *)lastrm->real_stream;
/* zlib.h is not const-correct, so we need this one bit
* of ugly hackery to convert a const * pointer to
* a non-const pointer. */
strm->next_in = (Bytef *)(uintptr_t)(const void *)lastrm->next_in;
strm->avail_in = lastrm->avail_in;
strm->total_in = (uLong)lastrm->total_in;
strm->next_out = lastrm->next_out;
strm->avail_out = lastrm->avail_out;
strm->total_out = (uLong)lastrm->total_out;
r = deflate(strm,
(action == ARCHIVE_Z_FINISH)? Z_FINISH: Z_NO_FLUSH);
lastrm->next_in = strm->next_in;
lastrm->avail_in = strm->avail_in;
lastrm->total_in = strm->total_in;
lastrm->next_out = strm->next_out;
lastrm->avail_out = strm->avail_out;
lastrm->total_out = strm->total_out;
switch (r) {
case Z_OK:
return (ARCHIVE_OK);
case Z_STREAM_END:
return (ARCHIVE_EOF);
default:
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"GZip compression failed:"
" deflate() call returned status %d", r);
return (ARCHIVE_FATAL);
}
}
static int
compression_end_gzip(struct archive *a, struct la_zstream *lastrm)
{
z_stream *strm;
int r;
strm = (z_stream *)lastrm->real_stream;
r = deflateEnd(strm);
free(strm);
lastrm->real_stream = NULL;
lastrm->valid = 0;
if (r != Z_OK) {
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"Failed to clean up compressor");
return (ARCHIVE_FATAL);
}
return (ARCHIVE_OK);
}
#if defined(HAVE_BZLIB_H) && defined(BZ_CONFIG_ERROR)
static int
compression_init_encoder_bzip2(struct archive *a,
struct la_zstream *lastrm, int level)
{
bz_stream *strm;
if (lastrm->valid)
compression_end(a, lastrm);
strm = calloc(1, sizeof(*strm));
if (strm == NULL) {
archive_set_error(a, ENOMEM,
"Can't allocate memory for bzip2 stream");
return (ARCHIVE_FATAL);
}
/* bzlib.h is not const-correct, so we need this one bit
* of ugly hackery to convert a const * pointer to
* a non-const pointer. */
strm->next_in = (char *)(uintptr_t)(const void *)lastrm->next_in;
strm->avail_in = lastrm->avail_in;
strm->total_in_lo32 = (uint32_t)(lastrm->total_in & 0xffffffff);
strm->total_in_hi32 = (uint32_t)(lastrm->total_in >> 32);
strm->next_out = (char *)lastrm->next_out;
strm->avail_out = lastrm->avail_out;
strm->total_out_lo32 = (uint32_t)(lastrm->total_out & 0xffffffff);
strm->total_out_hi32 = (uint32_t)(lastrm->total_out >> 32);
if (BZ2_bzCompressInit(strm, level, 0, 30) != BZ_OK) {
free(strm);
lastrm->real_stream = NULL;
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"Internal error initializing compression library");
return (ARCHIVE_FATAL);
}
lastrm->real_stream = strm;
lastrm->valid = 1;
lastrm->code = compression_code_bzip2;
lastrm->end = compression_end_bzip2;
return (ARCHIVE_OK);
}
static int
compression_code_bzip2(struct archive *a,
struct la_zstream *lastrm, enum la_zaction action)
{
bz_stream *strm;
int r;
strm = (bz_stream *)lastrm->real_stream;
/* bzlib.h is not const-correct, so we need this one bit
* of ugly hackery to convert a const * pointer to
* a non-const pointer. */
strm->next_in = (char *)(uintptr_t)(const void *)lastrm->next_in;
strm->avail_in = lastrm->avail_in;
strm->total_in_lo32 = (uint32_t)(lastrm->total_in & 0xffffffff);
strm->total_in_hi32 = (uint32_t)(lastrm->total_in >> 32);
strm->next_out = (char *)lastrm->next_out;
strm->avail_out = lastrm->avail_out;
strm->total_out_lo32 = (uint32_t)(lastrm->total_out & 0xffffffff);
strm->total_out_hi32 = (uint32_t)(lastrm->total_out >> 32);
r = BZ2_bzCompress(strm,
(action == ARCHIVE_Z_FINISH)? BZ_FINISH: BZ_RUN);
lastrm->next_in = (const unsigned char *)strm->next_in;
lastrm->avail_in = strm->avail_in;
lastrm->total_in =
(((uint64_t)(uint32_t)strm->total_in_hi32) << 32)
+ (uint64_t)(uint32_t)strm->total_in_lo32;
lastrm->next_out = (unsigned char *)strm->next_out;
lastrm->avail_out = strm->avail_out;
lastrm->total_out =
(((uint64_t)(uint32_t)strm->total_out_hi32) << 32)
+ (uint64_t)(uint32_t)strm->total_out_lo32;
switch (r) {
case BZ_RUN_OK: /* Non-finishing */
case BZ_FINISH_OK: /* Finishing: There's more work to do */
return (ARCHIVE_OK);
case BZ_STREAM_END: /* Finishing: all done */
/* Only occurs in finishing case */
return (ARCHIVE_EOF);
default:
/* Any other return value indicates an error */
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"Bzip2 compression failed:"
" BZ2_bzCompress() call returned status %d", r);
return (ARCHIVE_FATAL);
}
}
static int
compression_end_bzip2(struct archive *a, struct la_zstream *lastrm)
{
bz_stream *strm;
int r;
strm = (bz_stream *)lastrm->real_stream;
r = BZ2_bzCompressEnd(strm);
free(strm);
lastrm->real_stream = NULL;
lastrm->valid = 0;
if (r != BZ_OK) {
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"Failed to clean up compressor");
return (ARCHIVE_FATAL);
}
return (ARCHIVE_OK);
}
#else
static int
compression_init_encoder_bzip2(struct archive *a,
struct la_zstream *lastrm, int level)
{
(void) level; /* UNUSED */
if (lastrm->valid)
compression_end(a, lastrm);
return (compression_unsupported_encoder(a, lastrm, "bzip2"));
}
#endif
#if defined(HAVE_LZMA_H)
static int
compression_init_encoder_lzma(struct archive *a,
struct la_zstream *lastrm, int level)
{
static const lzma_stream lzma_init_data = LZMA_STREAM_INIT;
lzma_stream *strm;
lzma_options_lzma lzma_opt;
int r;
if (lastrm->valid)
compression_end(a, lastrm);
if (lzma_lzma_preset(&lzma_opt, level)) {
lastrm->real_stream = NULL;
archive_set_error(a, ENOMEM,
"Internal error initializing compression library");
return (ARCHIVE_FATAL);
}
strm = calloc(1, sizeof(*strm));
if (strm == NULL) {
archive_set_error(a, ENOMEM,
"Can't allocate memory for lzma stream");
return (ARCHIVE_FATAL);
}
*strm = lzma_init_data;
r = lzma_alone_encoder(strm, &lzma_opt);
switch (r) {
case LZMA_OK:
lastrm->real_stream = strm;
lastrm->valid = 1;
lastrm->code = compression_code_lzma;
lastrm->end = compression_end_lzma;
r = ARCHIVE_OK;
break;
case LZMA_MEM_ERROR:
free(strm);
lastrm->real_stream = NULL;
archive_set_error(a, ENOMEM,
"Internal error initializing compression library: "
"Cannot allocate memory");
r = ARCHIVE_FATAL;
break;
default:
free(strm);
lastrm->real_stream = NULL;
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"Internal error initializing compression library: "
"It's a bug in liblzma");
r = ARCHIVE_FATAL;
break;
}
return (r);
}
static int
compression_init_encoder_xz(struct archive *a,
struct la_zstream *lastrm, int level, int threads)
{
static const lzma_stream lzma_init_data = LZMA_STREAM_INIT;
lzma_stream *strm;
lzma_filter *lzmafilters;
lzma_options_lzma lzma_opt;
int r;
#ifdef HAVE_LZMA_STREAM_ENCODER_MT
lzma_mt mt_options;
#endif
(void)threads; /* UNUSED (if multi-threaded LZMA library not avail) */
if (lastrm->valid)
compression_end(a, lastrm);
strm = calloc(1, sizeof(*strm) + sizeof(*lzmafilters) * 2);
if (strm == NULL) {
archive_set_error(a, ENOMEM,
"Can't allocate memory for xz stream");
return (ARCHIVE_FATAL);
}
lzmafilters = (lzma_filter *)(strm+1);
if (level > 6)
level = 6;
if (lzma_lzma_preset(&lzma_opt, level)) {
free(strm);
lastrm->real_stream = NULL;
archive_set_error(a, ENOMEM,
"Internal error initializing compression library");
return (ARCHIVE_FATAL);
}
lzmafilters[0].id = LZMA_FILTER_LZMA2;
lzmafilters[0].options = &lzma_opt;
lzmafilters[1].id = LZMA_VLI_UNKNOWN;/* Terminate */
*strm = lzma_init_data;
#ifdef HAVE_LZMA_STREAM_ENCODER_MT
if (threads > 1) {
memset(&mt_options, 0, sizeof(mt_options));
mt_options.threads = threads;
mt_options.timeout = 300;
mt_options.filters = lzmafilters;
mt_options.check = LZMA_CHECK_CRC64;
r = lzma_stream_encoder_mt(strm, &mt_options);
} else
#endif
r = lzma_stream_encoder(strm, lzmafilters, LZMA_CHECK_CRC64);
switch (r) {
case LZMA_OK:
lastrm->real_stream = strm;
lastrm->valid = 1;
lastrm->code = compression_code_lzma;
lastrm->end = compression_end_lzma;
r = ARCHIVE_OK;
break;
case LZMA_MEM_ERROR:
free(strm);
lastrm->real_stream = NULL;
archive_set_error(a, ENOMEM,
"Internal error initializing compression library: "
"Cannot allocate memory");
r = ARCHIVE_FATAL;
break;
default:
free(strm);
lastrm->real_stream = NULL;
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"Internal error initializing compression library: "
"It's a bug in liblzma");
r = ARCHIVE_FATAL;
break;
}
return (r);
}
static int
compression_code_lzma(struct archive *a,
struct la_zstream *lastrm, enum la_zaction action)
{
lzma_stream *strm;
int r;
strm = (lzma_stream *)lastrm->real_stream;
strm->next_in = lastrm->next_in;
strm->avail_in = lastrm->avail_in;
strm->total_in = lastrm->total_in;
strm->next_out = lastrm->next_out;
strm->avail_out = lastrm->avail_out;
strm->total_out = lastrm->total_out;
r = lzma_code(strm,
(action == ARCHIVE_Z_FINISH)? LZMA_FINISH: LZMA_RUN);
lastrm->next_in = strm->next_in;
lastrm->avail_in = strm->avail_in;
lastrm->total_in = strm->total_in;
lastrm->next_out = strm->next_out;
lastrm->avail_out = strm->avail_out;
lastrm->total_out = strm->total_out;
switch (r) {
case LZMA_OK:
/* Non-finishing case */
return (ARCHIVE_OK);
case LZMA_STREAM_END:
/* This return can only occur in finishing case. */
return (ARCHIVE_EOF);
case LZMA_MEMLIMIT_ERROR:
archive_set_error(a, ENOMEM,
"lzma compression error:"
" %ju MiB would have been needed",
(uintmax_t)((lzma_memusage(strm) + 1024 * 1024 -1)
/ (1024 * 1024)));
return (ARCHIVE_FATAL);
default:
/* Any other return value indicates an error */
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"lzma compression failed:"
" lzma_code() call returned status %d", r);
return (ARCHIVE_FATAL);
}
}
static int
compression_end_lzma(struct archive *a, struct la_zstream *lastrm)
{
lzma_stream *strm;
(void)a; /* UNUSED */
strm = (lzma_stream *)lastrm->real_stream;
lzma_end(strm);
free(strm);
lastrm->valid = 0;
lastrm->real_stream = NULL;
return (ARCHIVE_OK);
}
#else
static int
compression_init_encoder_lzma(struct archive *a,
struct la_zstream *lastrm, int level)
{
(void) level; /* UNUSED */
if (lastrm->valid)
compression_end(a, lastrm);
return (compression_unsupported_encoder(a, lastrm, "lzma"));
}
static int
compression_init_encoder_xz(struct archive *a,
struct la_zstream *lastrm, int level, int threads)
{
(void) level; /* UNUSED */
(void) threads; /* UNUSED */
if (lastrm->valid)
compression_end(a, lastrm);
return (compression_unsupported_encoder(a, lastrm, "xz"));
}
#endif
static int
xar_compression_init_encoder(struct archive_write *a)
{
struct xar *xar;
int r;
xar = (struct xar *)a->format_data;
switch (xar->opt_compression) {
case GZIP:
r = compression_init_encoder_gzip(
&(a->archive), &(xar->stream),
xar->opt_compression_level, 1);
break;
case BZIP2:
r = compression_init_encoder_bzip2(
&(a->archive), &(xar->stream),
xar->opt_compression_level);
break;
case LZMA:
r = compression_init_encoder_lzma(
&(a->archive), &(xar->stream),
xar->opt_compression_level);
break;
case XZ:
r = compression_init_encoder_xz(
&(a->archive), &(xar->stream),
xar->opt_compression_level, xar->opt_threads);
break;
default:
r = ARCHIVE_OK;
break;
}
if (r == ARCHIVE_OK) {
xar->stream.total_in = 0;
xar->stream.next_out = xar->wbuff;
xar->stream.avail_out = sizeof(xar->wbuff);
xar->stream.total_out = 0;
}
return (r);
}
static int
compression_code(struct archive *a, struct la_zstream *lastrm,
enum la_zaction action)
{
if (lastrm->valid)
return (lastrm->code(a, lastrm, action));
return (ARCHIVE_OK);
}
static int
compression_end(struct archive *a, struct la_zstream *lastrm)
{
if (lastrm->valid)
return (lastrm->end(a, lastrm));
return (ARCHIVE_OK);
}
static int
save_xattrs(struct archive_write *a, struct file *file)
{
struct xar *xar;
const char *name;
const void *value;
struct heap_data *heap;
size_t size;
int count, r;
xar = (struct xar *)a->format_data;
count = archive_entry_xattr_reset(file->entry);
if (count == 0)
return (ARCHIVE_OK);
while (count--) {
archive_entry_xattr_next(file->entry,
&name, &value, &size);
checksum_init(&(xar->a_sumwrk), xar->opt_sumalg);
checksum_init(&(xar->e_sumwrk), xar->opt_sumalg);
heap = calloc(1, sizeof(*heap));
if (heap == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate memory for xattr");
return (ARCHIVE_FATAL);
}
heap->id = file->ea_idx++;
heap->temp_offset = xar->temp_offset;
heap->size = size;/* save a extracted size */
heap->compression = xar->opt_compression;
/* Get a extracted sumcheck value. */
checksum_update(&(xar->e_sumwrk), value, size);
checksum_final(&(xar->e_sumwrk), &(heap->e_sum));
/*
* Not compression to xattr is simple way.
*/
if (heap->compression == NONE) {
checksum_update(&(xar->a_sumwrk), value, size);
checksum_final(&(xar->a_sumwrk), &(heap->a_sum));
if (write_to_temp(a, value, size)
!= ARCHIVE_OK) {
free(heap);
return (ARCHIVE_FATAL);
}
heap->length = size;
/* Add heap to the tail of file->xattr. */
heap->next = NULL;
*file->xattr.last = heap;
file->xattr.last = &(heap->next);
/* Next xattr */
continue;
}
/*
* Init compression library.
*/
r = xar_compression_init_encoder(a);
if (r != ARCHIVE_OK) {
free(heap);
return (ARCHIVE_FATAL);
}
xar->stream.next_in = (const unsigned char *)value;
xar->stream.avail_in = size;
for (;;) {
r = compression_code(&(a->archive),
&(xar->stream), ARCHIVE_Z_FINISH);
if (r != ARCHIVE_OK && r != ARCHIVE_EOF) {
free(heap);
return (ARCHIVE_FATAL);
}
size = sizeof(xar->wbuff) - xar->stream.avail_out;
checksum_update(&(xar->a_sumwrk),
xar->wbuff, size);
if (write_to_temp(a, xar->wbuff, size)
!= ARCHIVE_OK) {
free(heap);
return (ARCHIVE_FATAL);
}
if (r == ARCHIVE_OK) {
xar->stream.next_out = xar->wbuff;
xar->stream.avail_out = sizeof(xar->wbuff);
} else {
checksum_final(&(xar->a_sumwrk),
&(heap->a_sum));
heap->length = xar->stream.total_out;
/* Add heap to the tail of file->xattr. */
heap->next = NULL;
*file->xattr.last = heap;
file->xattr.last = &(heap->next);
break;
}
}
/* Clean up compression library. */
r = compression_end(&(a->archive), &(xar->stream));
if (r != ARCHIVE_OK)
return (ARCHIVE_FATAL);
}
return (ARCHIVE_OK);
}
static int
getalgsize(enum sumalg sumalg)
{
switch (sumalg) {
default:
case CKSUM_NONE:
return (0);
case CKSUM_SHA1:
return (SHA1_SIZE);
case CKSUM_MD5:
return (MD5_SIZE);
}
}
static const char *
getalgname(enum sumalg sumalg)
{
switch (sumalg) {
default:
case CKSUM_NONE:
return (NULL);
case CKSUM_SHA1:
return (SHA1_NAME);
case CKSUM_MD5:
return (MD5_NAME);
}
}
#endif /* Support xar format */
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