mirror of
https://github.com/sheumann/hush.git
synced 2024-10-31 19:04:47 +00:00
0ef64bdb40
This change retains "or later" state! No licensing _changes_ here, only form is adjusted (article, space between "GPL" and "v2" and so on). Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
692 lines
21 KiB
C
692 lines
21 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Mini unzip implementation for busybox
|
|
*
|
|
* Copyright (C) 2004 by Ed Clark
|
|
*
|
|
* Loosely based on original busybox unzip applet by Laurence Anderson.
|
|
* All options and features should work in this version.
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
|
*/
|
|
|
|
/* For reference see
|
|
* http://www.pkware.com/company/standards/appnote/
|
|
* http://www.info-zip.org/pub/infozip/doc/appnote-iz-latest.zip
|
|
*/
|
|
|
|
/* TODO
|
|
* Zip64 + other methods
|
|
*/
|
|
|
|
#include "libbb.h"
|
|
#include "unarchive.h"
|
|
|
|
enum {
|
|
#if BB_BIG_ENDIAN
|
|
ZIP_FILEHEADER_MAGIC = 0x504b0304,
|
|
ZIP_CDF_MAGIC = 0x504b0102, /* central directory's file header */
|
|
ZIP_CDE_MAGIC = 0x504b0506, /* "end of central directory" record */
|
|
ZIP_DD_MAGIC = 0x504b0708,
|
|
#else
|
|
ZIP_FILEHEADER_MAGIC = 0x04034b50,
|
|
ZIP_CDF_MAGIC = 0x02014b50,
|
|
ZIP_CDE_MAGIC = 0x06054b50,
|
|
ZIP_DD_MAGIC = 0x08074b50,
|
|
#endif
|
|
};
|
|
|
|
#define ZIP_HEADER_LEN 26
|
|
|
|
typedef union {
|
|
uint8_t raw[ZIP_HEADER_LEN];
|
|
struct {
|
|
uint16_t version; /* 0-1 */
|
|
uint16_t zip_flags; /* 2-3 */
|
|
uint16_t method; /* 4-5 */
|
|
uint16_t modtime; /* 6-7 */
|
|
uint16_t moddate; /* 8-9 */
|
|
uint32_t crc32 PACKED; /* 10-13 */
|
|
uint32_t cmpsize PACKED; /* 14-17 */
|
|
uint32_t ucmpsize PACKED; /* 18-21 */
|
|
uint16_t filename_len; /* 22-23 */
|
|
uint16_t extra_len; /* 24-25 */
|
|
} formatted PACKED;
|
|
} zip_header_t; /* PACKED - gcc 4.2.1 doesn't like it (spews warning) */
|
|
|
|
/* Check the offset of the last element, not the length. This leniency
|
|
* allows for poor packing, whereby the overall struct may be too long,
|
|
* even though the elements are all in the right place.
|
|
*/
|
|
struct BUG_zip_header_must_be_26_bytes {
|
|
char BUG_zip_header_must_be_26_bytes[
|
|
offsetof(zip_header_t, formatted.extra_len) + 2
|
|
== ZIP_HEADER_LEN ? 1 : -1];
|
|
};
|
|
|
|
#define FIX_ENDIANNESS_ZIP(zip_header) do { \
|
|
(zip_header).formatted.version = SWAP_LE16((zip_header).formatted.version ); \
|
|
(zip_header).formatted.method = SWAP_LE16((zip_header).formatted.method ); \
|
|
(zip_header).formatted.modtime = SWAP_LE16((zip_header).formatted.modtime ); \
|
|
(zip_header).formatted.moddate = SWAP_LE16((zip_header).formatted.moddate ); \
|
|
(zip_header).formatted.crc32 = SWAP_LE32((zip_header).formatted.crc32 ); \
|
|
(zip_header).formatted.cmpsize = SWAP_LE32((zip_header).formatted.cmpsize ); \
|
|
(zip_header).formatted.ucmpsize = SWAP_LE32((zip_header).formatted.ucmpsize ); \
|
|
(zip_header).formatted.filename_len = SWAP_LE16((zip_header).formatted.filename_len); \
|
|
(zip_header).formatted.extra_len = SWAP_LE16((zip_header).formatted.extra_len ); \
|
|
} while (0)
|
|
|
|
#define CDF_HEADER_LEN 42
|
|
|
|
typedef union {
|
|
uint8_t raw[CDF_HEADER_LEN];
|
|
struct {
|
|
/* uint32_t signature; 50 4b 01 02 */
|
|
uint16_t version_made_by; /* 0-1 */
|
|
uint16_t version_needed; /* 2-3 */
|
|
uint16_t cdf_flags; /* 4-5 */
|
|
uint16_t method; /* 6-7 */
|
|
uint16_t mtime; /* 8-9 */
|
|
uint16_t mdate; /* 10-11 */
|
|
uint32_t crc32; /* 12-15 */
|
|
uint32_t cmpsize; /* 16-19 */
|
|
uint32_t ucmpsize; /* 20-23 */
|
|
uint16_t file_name_length; /* 24-25 */
|
|
uint16_t extra_field_length; /* 26-27 */
|
|
uint16_t file_comment_length; /* 28-29 */
|
|
uint16_t disk_number_start; /* 30-31 */
|
|
uint16_t internal_file_attributes; /* 32-33 */
|
|
uint32_t external_file_attributes PACKED; /* 34-37 */
|
|
uint32_t relative_offset_of_local_header PACKED; /* 38-41 */
|
|
} formatted PACKED;
|
|
} cdf_header_t;
|
|
|
|
struct BUG_cdf_header_must_be_42_bytes {
|
|
char BUG_cdf_header_must_be_42_bytes[
|
|
offsetof(cdf_header_t, formatted.relative_offset_of_local_header) + 4
|
|
== CDF_HEADER_LEN ? 1 : -1];
|
|
};
|
|
|
|
#define FIX_ENDIANNESS_CDF(cdf_header) do { \
|
|
(cdf_header).formatted.crc32 = SWAP_LE32((cdf_header).formatted.crc32 ); \
|
|
(cdf_header).formatted.cmpsize = SWAP_LE32((cdf_header).formatted.cmpsize ); \
|
|
(cdf_header).formatted.ucmpsize = SWAP_LE32((cdf_header).formatted.ucmpsize ); \
|
|
(cdf_header).formatted.file_name_length = SWAP_LE16((cdf_header).formatted.file_name_length); \
|
|
(cdf_header).formatted.extra_field_length = SWAP_LE16((cdf_header).formatted.extra_field_length); \
|
|
(cdf_header).formatted.file_comment_length = SWAP_LE16((cdf_header).formatted.file_comment_length); \
|
|
IF_DESKTOP( \
|
|
(cdf_header).formatted.version_made_by = SWAP_LE16((cdf_header).formatted.version_made_by); \
|
|
(cdf_header).formatted.external_file_attributes = SWAP_LE32((cdf_header).formatted.external_file_attributes); \
|
|
) \
|
|
} while (0)
|
|
|
|
#define CDE_HEADER_LEN 16
|
|
|
|
typedef union {
|
|
uint8_t raw[CDE_HEADER_LEN];
|
|
struct {
|
|
/* uint32_t signature; 50 4b 05 06 */
|
|
uint16_t this_disk_no;
|
|
uint16_t disk_with_cdf_no;
|
|
uint16_t cdf_entries_on_this_disk;
|
|
uint16_t cdf_entries_total;
|
|
uint32_t cdf_size;
|
|
uint32_t cdf_offset;
|
|
/* uint16_t file_comment_length; */
|
|
/* .ZIP file comment (variable size) */
|
|
} formatted PACKED;
|
|
} cde_header_t;
|
|
|
|
struct BUG_cde_header_must_be_16_bytes {
|
|
char BUG_cde_header_must_be_16_bytes[
|
|
sizeof(cde_header_t) == CDE_HEADER_LEN ? 1 : -1];
|
|
};
|
|
|
|
#define FIX_ENDIANNESS_CDE(cde_header) do { \
|
|
(cde_header).formatted.cdf_offset = SWAP_LE32((cde_header).formatted.cdf_offset); \
|
|
} while (0)
|
|
|
|
enum { zip_fd = 3 };
|
|
|
|
|
|
#if ENABLE_DESKTOP
|
|
|
|
#define PEEK_FROM_END 16384
|
|
|
|
/* NB: does not preserve file position! */
|
|
static uint32_t find_cdf_offset(void)
|
|
{
|
|
cde_header_t cde_header;
|
|
unsigned char *p;
|
|
off_t end;
|
|
unsigned char *buf = xzalloc(PEEK_FROM_END);
|
|
|
|
end = xlseek(zip_fd, 0, SEEK_END);
|
|
end -= PEEK_FROM_END;
|
|
if (end < 0)
|
|
end = 0;
|
|
xlseek(zip_fd, end, SEEK_SET);
|
|
full_read(zip_fd, buf, PEEK_FROM_END);
|
|
|
|
p = buf;
|
|
while (p <= buf + PEEK_FROM_END - CDE_HEADER_LEN - 4) {
|
|
if (*p != 'P') {
|
|
p++;
|
|
continue;
|
|
}
|
|
if (*++p != 'K')
|
|
continue;
|
|
if (*++p != 5)
|
|
continue;
|
|
if (*++p != 6)
|
|
continue;
|
|
/* we found CDE! */
|
|
memcpy(cde_header.raw, p + 1, CDE_HEADER_LEN);
|
|
FIX_ENDIANNESS_CDE(cde_header);
|
|
free(buf);
|
|
return cde_header.formatted.cdf_offset;
|
|
}
|
|
//free(buf);
|
|
bb_error_msg_and_die("can't find file table");
|
|
};
|
|
|
|
static uint32_t read_next_cdf(uint32_t cdf_offset, cdf_header_t *cdf_ptr)
|
|
{
|
|
off_t org;
|
|
|
|
org = xlseek(zip_fd, 0, SEEK_CUR);
|
|
|
|
if (!cdf_offset)
|
|
cdf_offset = find_cdf_offset();
|
|
|
|
xlseek(zip_fd, cdf_offset + 4, SEEK_SET);
|
|
xread(zip_fd, cdf_ptr->raw, CDF_HEADER_LEN);
|
|
FIX_ENDIANNESS_CDF(*cdf_ptr);
|
|
cdf_offset += 4 + CDF_HEADER_LEN
|
|
+ cdf_ptr->formatted.file_name_length
|
|
+ cdf_ptr->formatted.extra_field_length
|
|
+ cdf_ptr->formatted.file_comment_length;
|
|
|
|
xlseek(zip_fd, org, SEEK_SET);
|
|
return cdf_offset;
|
|
};
|
|
#endif
|
|
|
|
static void unzip_skip(off_t skip)
|
|
{
|
|
if (lseek(zip_fd, skip, SEEK_CUR) == (off_t)-1)
|
|
bb_copyfd_exact_size(zip_fd, -1, skip);
|
|
}
|
|
|
|
static void unzip_create_leading_dirs(const char *fn)
|
|
{
|
|
/* Create all leading directories */
|
|
char *name = xstrdup(fn);
|
|
if (bb_make_directory(dirname(name), 0777, FILEUTILS_RECUR)) {
|
|
bb_error_msg_and_die("exiting"); /* bb_make_directory is noisy */
|
|
}
|
|
free(name);
|
|
}
|
|
|
|
static void unzip_extract(zip_header_t *zip_header, int dst_fd)
|
|
{
|
|
if (zip_header->formatted.method == 0) {
|
|
/* Method 0 - stored (not compressed) */
|
|
off_t size = zip_header->formatted.ucmpsize;
|
|
if (size)
|
|
bb_copyfd_exact_size(zip_fd, dst_fd, size);
|
|
} else {
|
|
/* Method 8 - inflate */
|
|
inflate_unzip_result res;
|
|
if (inflate_unzip(&res, zip_header->formatted.cmpsize, zip_fd, dst_fd) < 0)
|
|
bb_error_msg_and_die("inflate error");
|
|
/* Validate decompression - crc */
|
|
if (zip_header->formatted.crc32 != (res.crc ^ 0xffffffffL)) {
|
|
bb_error_msg_and_die("crc error");
|
|
}
|
|
/* Validate decompression - size */
|
|
if (zip_header->formatted.ucmpsize != res.bytes_out) {
|
|
/* Don't die. Who knows, maybe len calculation
|
|
* was botched somewhere. After all, crc matched! */
|
|
bb_error_msg("bad length");
|
|
}
|
|
}
|
|
}
|
|
|
|
int unzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int unzip_main(int argc, char **argv)
|
|
{
|
|
enum { O_PROMPT, O_NEVER, O_ALWAYS };
|
|
|
|
zip_header_t zip_header;
|
|
smallint quiet = 0;
|
|
IF_NOT_DESKTOP(const) smallint verbose = 0;
|
|
smallint listing = 0;
|
|
smallint overwrite = O_PROMPT;
|
|
#if ENABLE_DESKTOP
|
|
uint32_t cdf_offset;
|
|
#endif
|
|
unsigned long total_usize;
|
|
unsigned long total_size;
|
|
unsigned total_entries;
|
|
int dst_fd = -1;
|
|
char *src_fn = NULL;
|
|
char *dst_fn = NULL;
|
|
llist_t *zaccept = NULL;
|
|
llist_t *zreject = NULL;
|
|
char *base_dir = NULL;
|
|
int i, opt;
|
|
int opt_range = 0;
|
|
char key_buf[80];
|
|
struct stat stat_buf;
|
|
|
|
/* -q, -l and -v: UnZip 5.52 of 28 February 2005, by Info-ZIP:
|
|
*
|
|
* # /usr/bin/unzip -qq -v decompress_unlzma.i.zip
|
|
* 204372 Defl:N 35278 83% 09-06-09 14:23 0d056252 decompress_unlzma.i
|
|
* # /usr/bin/unzip -q -v decompress_unlzma.i.zip
|
|
* Length Method Size Ratio Date Time CRC-32 Name
|
|
* -------- ------ ------- ----- ---- ---- ------ ----
|
|
* 204372 Defl:N 35278 83% 09-06-09 14:23 0d056252 decompress_unlzma.i
|
|
* -------- ------- --- -------
|
|
* 204372 35278 83% 1 file
|
|
* # /usr/bin/unzip -v decompress_unlzma.i.zip
|
|
* Archive: decompress_unlzma.i.zip
|
|
* Length Method Size Ratio Date Time CRC-32 Name
|
|
* -------- ------ ------- ----- ---- ---- ------ ----
|
|
* 204372 Defl:N 35278 83% 09-06-09 14:23 0d056252 decompress_unlzma.i
|
|
* -------- ------- --- -------
|
|
* 204372 35278 83% 1 file
|
|
* # unzip -v decompress_unlzma.i.zip
|
|
* Archive: decompress_unlzma.i.zip
|
|
* Length Date Time Name
|
|
* -------- ---- ---- ----
|
|
* 204372 09-06-09 14:23 decompress_unlzma.i
|
|
* -------- -------
|
|
* 204372 1 files
|
|
* # /usr/bin/unzip -l -qq decompress_unlzma.i.zip
|
|
* 204372 09-06-09 14:23 decompress_unlzma.i
|
|
* # /usr/bin/unzip -l -q decompress_unlzma.i.zip
|
|
* Length Date Time Name
|
|
* -------- ---- ---- ----
|
|
* 204372 09-06-09 14:23 decompress_unlzma.i
|
|
* -------- -------
|
|
* 204372 1 file
|
|
* # /usr/bin/unzip -l decompress_unlzma.i.zip
|
|
* Archive: decompress_unlzma.i.zip
|
|
* Length Date Time Name
|
|
* -------- ---- ---- ----
|
|
* 204372 09-06-09 14:23 decompress_unlzma.i
|
|
* -------- -------
|
|
* 204372 1 file
|
|
*/
|
|
|
|
/* '-' makes getopt return 1 for non-options */
|
|
while ((opt = getopt(argc, argv, "-d:lnopqxv")) != -1) {
|
|
switch (opt_range) {
|
|
case 0: /* Options */
|
|
switch (opt) {
|
|
case 'l': /* List */
|
|
listing = 1;
|
|
break;
|
|
|
|
case 'n': /* Never overwrite existing files */
|
|
overwrite = O_NEVER;
|
|
break;
|
|
|
|
case 'o': /* Always overwrite existing files */
|
|
overwrite = O_ALWAYS;
|
|
break;
|
|
|
|
case 'p': /* Extract files to stdout and fall through to set verbosity */
|
|
dst_fd = STDOUT_FILENO;
|
|
|
|
case 'q': /* Be quiet */
|
|
quiet++;
|
|
break;
|
|
|
|
case 'v': /* Verbose list */
|
|
IF_DESKTOP(verbose++;)
|
|
listing = 1;
|
|
break;
|
|
|
|
case 1: /* The zip file */
|
|
/* +5: space for ".zip" and NUL */
|
|
src_fn = xmalloc(strlen(optarg) + 5);
|
|
strcpy(src_fn, optarg);
|
|
opt_range++;
|
|
break;
|
|
|
|
default:
|
|
bb_show_usage();
|
|
}
|
|
break;
|
|
|
|
case 1: /* Include files */
|
|
if (opt == 1) {
|
|
llist_add_to(&zaccept, optarg);
|
|
break;
|
|
}
|
|
if (opt == 'd') {
|
|
base_dir = optarg;
|
|
opt_range += 2;
|
|
break;
|
|
}
|
|
if (opt == 'x') {
|
|
opt_range++;
|
|
break;
|
|
}
|
|
bb_show_usage();
|
|
|
|
case 2 : /* Exclude files */
|
|
if (opt == 1) {
|
|
llist_add_to(&zreject, optarg);
|
|
break;
|
|
}
|
|
if (opt == 'd') { /* Extract to base directory */
|
|
base_dir = optarg;
|
|
opt_range++;
|
|
break;
|
|
}
|
|
/* fall through */
|
|
|
|
default:
|
|
bb_show_usage();
|
|
}
|
|
}
|
|
|
|
if (src_fn == NULL) {
|
|
bb_show_usage();
|
|
}
|
|
|
|
/* Open input file */
|
|
if (LONE_DASH(src_fn)) {
|
|
xdup2(STDIN_FILENO, zip_fd);
|
|
/* Cannot use prompt mode since zip data is arriving on STDIN */
|
|
if (overwrite == O_PROMPT)
|
|
overwrite = O_NEVER;
|
|
} else {
|
|
static const char extn[][5] = {"", ".zip", ".ZIP"};
|
|
int orig_src_fn_len = strlen(src_fn);
|
|
int src_fd = -1;
|
|
|
|
for (i = 0; (i < 3) && (src_fd == -1); i++) {
|
|
strcpy(src_fn + orig_src_fn_len, extn[i]);
|
|
src_fd = open(src_fn, O_RDONLY);
|
|
}
|
|
if (src_fd == -1) {
|
|
src_fn[orig_src_fn_len] = '\0';
|
|
bb_error_msg_and_die("can't open %s, %s.zip, %s.ZIP", src_fn, src_fn, src_fn);
|
|
}
|
|
xmove_fd(src_fd, zip_fd);
|
|
}
|
|
|
|
/* Change dir if necessary */
|
|
if (base_dir)
|
|
xchdir(base_dir);
|
|
|
|
if (quiet <= 1) { /* not -qq */
|
|
if (quiet == 0)
|
|
printf("Archive: %s\n", src_fn);
|
|
if (listing) {
|
|
puts(verbose ?
|
|
" Length Method Size Ratio Date Time CRC-32 Name\n"
|
|
"-------- ------ ------- ----- ---- ---- ------ ----"
|
|
:
|
|
" Length Date Time Name\n"
|
|
" -------- ---- ---- ----"
|
|
);
|
|
}
|
|
}
|
|
|
|
/* Example of an archive with one 0-byte long file named 'z'
|
|
* created by Zip 2.31 on Unix:
|
|
* 0000 [50 4b]03 04 0a 00 00 00 00 00 42 1a b8 3c 00 00 |PK........B..<..|
|
|
* sig........ vneed flags compr mtime mdate crc32>
|
|
* 0010 00 00 00 00 00 00 00 00 00 00 01 00 15 00 7a 55 |..............zU|
|
|
* >..... csize...... usize...... fnlen exlen fn ex>
|
|
* 0020 54 09 00 03 cc d3 f9 4b cc d3 f9 4b 55 78 04 00 |T......K...KUx..|
|
|
* >tra_field......................................
|
|
* 0030 00 00 00 00[50 4b]01 02 17 03 0a 00 00 00 00 00 |....PK..........|
|
|
* ........... sig........ vmade vneed flags compr
|
|
* 0040 42 1a b8 3c 00 00 00 00 00 00 00 00 00 00 00 00 |B..<............|
|
|
* mtime mdate crc32...... csize...... usize......
|
|
* 0050 01 00 0d 00 00 00 00 00 00 00 00 00 a4 81 00 00 |................|
|
|
* fnlen exlen clen. dnum. iattr eattr...... relofs> (eattr = rw-r--r--)
|
|
* 0060 00 00 7a 55 54 05 00 03 cc d3 f9 4b 55 78 00 00 |..zUT......KUx..|
|
|
* >..... fn extra_field...........................
|
|
* 0070 [50 4b]05 06 00 00 00 00 01 00 01 00 3c 00 00 00 |PK..........<...|
|
|
* 0080 34 00 00 00 00 00 |4.....|
|
|
*/
|
|
total_usize = 0;
|
|
total_size = 0;
|
|
total_entries = 0;
|
|
#if ENABLE_DESKTOP
|
|
cdf_offset = 0;
|
|
#endif
|
|
while (1) {
|
|
uint32_t magic;
|
|
mode_t dir_mode = 0777;
|
|
#if ENABLE_DESKTOP
|
|
mode_t file_mode = 0666;
|
|
#endif
|
|
|
|
/* Check magic number */
|
|
xread(zip_fd, &magic, 4);
|
|
/* Central directory? It's at the end, so exit */
|
|
if (magic == ZIP_CDF_MAGIC)
|
|
break;
|
|
#if ENABLE_DESKTOP
|
|
/* Data descriptor? It was a streaming file, go on */
|
|
if (magic == ZIP_DD_MAGIC) {
|
|
/* skip over duplicate crc32, cmpsize and ucmpsize */
|
|
unzip_skip(3 * 4);
|
|
continue;
|
|
}
|
|
#endif
|
|
if (magic != ZIP_FILEHEADER_MAGIC)
|
|
bb_error_msg_and_die("invalid zip magic %08X", (int)magic);
|
|
|
|
/* Read the file header */
|
|
xread(zip_fd, zip_header.raw, ZIP_HEADER_LEN);
|
|
FIX_ENDIANNESS_ZIP(zip_header);
|
|
if ((zip_header.formatted.method != 0) && (zip_header.formatted.method != 8)) {
|
|
bb_error_msg_and_die("unsupported method %d", zip_header.formatted.method);
|
|
}
|
|
#if !ENABLE_DESKTOP
|
|
if (zip_header.formatted.zip_flags & SWAP_LE16(0x0009)) {
|
|
bb_error_msg_and_die("zip flags 1 and 8 are not supported");
|
|
}
|
|
#else
|
|
if (zip_header.formatted.zip_flags & SWAP_LE16(0x0001)) {
|
|
/* 0x0001 - encrypted */
|
|
bb_error_msg_and_die("zip flag 1 (encryption) is not supported");
|
|
}
|
|
|
|
{
|
|
cdf_header_t cdf_header;
|
|
cdf_offset = read_next_cdf(cdf_offset, &cdf_header);
|
|
if (zip_header.formatted.zip_flags & SWAP_LE16(0x0008)) {
|
|
/* 0x0008 - streaming. [u]cmpsize can be reliably gotten
|
|
* only from Central Directory. See unzip_doc.txt */
|
|
zip_header.formatted.crc32 = cdf_header.formatted.crc32;
|
|
zip_header.formatted.cmpsize = cdf_header.formatted.cmpsize;
|
|
zip_header.formatted.ucmpsize = cdf_header.formatted.ucmpsize;
|
|
}
|
|
if ((cdf_header.formatted.version_made_by >> 8) == 3) {
|
|
/* this archive is created on Unix */
|
|
dir_mode = file_mode = (cdf_header.formatted.external_file_attributes >> 16);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* Read filename */
|
|
free(dst_fn);
|
|
dst_fn = xzalloc(zip_header.formatted.filename_len + 1);
|
|
xread(zip_fd, dst_fn, zip_header.formatted.filename_len);
|
|
|
|
/* Skip extra header bytes */
|
|
unzip_skip(zip_header.formatted.extra_len);
|
|
|
|
/* Filter zip entries */
|
|
if (find_list_entry(zreject, dst_fn)
|
|
|| (zaccept && !find_list_entry(zaccept, dst_fn))
|
|
) { /* Skip entry */
|
|
i = 'n';
|
|
|
|
} else { /* Extract entry */
|
|
if (listing) { /* List entry */
|
|
unsigned dostime = zip_header.formatted.modtime | (zip_header.formatted.moddate << 16);
|
|
if (!verbose) {
|
|
// " Length Date Time Name\n"
|
|
// " -------- ---- ---- ----"
|
|
printf( "%9u %02u-%02u-%02u %02u:%02u %s\n",
|
|
(unsigned)zip_header.formatted.ucmpsize,
|
|
(dostime & 0x01e00000) >> 21,
|
|
(dostime & 0x001f0000) >> 16,
|
|
(((dostime & 0xfe000000) >> 25) + 1980) % 100,
|
|
(dostime & 0x0000f800) >> 11,
|
|
(dostime & 0x000007e0) >> 5,
|
|
dst_fn);
|
|
total_usize += zip_header.formatted.ucmpsize;
|
|
} else {
|
|
unsigned long percents = zip_header.formatted.ucmpsize - zip_header.formatted.cmpsize;
|
|
percents = percents * 100;
|
|
if (zip_header.formatted.ucmpsize)
|
|
percents /= zip_header.formatted.ucmpsize;
|
|
// " Length Method Size Ratio Date Time CRC-32 Name\n"
|
|
// "-------- ------ ------- ----- ---- ---- ------ ----"
|
|
printf( "%8u Defl:N" "%9u%4u%% %02u-%02u-%02u %02u:%02u %08x %s\n",
|
|
(unsigned)zip_header.formatted.ucmpsize,
|
|
(unsigned)zip_header.formatted.cmpsize,
|
|
(unsigned)percents,
|
|
(dostime & 0x01e00000) >> 21,
|
|
(dostime & 0x001f0000) >> 16,
|
|
(((dostime & 0xfe000000) >> 25) + 1980) % 100,
|
|
(dostime & 0x0000f800) >> 11,
|
|
(dostime & 0x000007e0) >> 5,
|
|
zip_header.formatted.crc32,
|
|
dst_fn);
|
|
total_usize += zip_header.formatted.ucmpsize;
|
|
total_size += zip_header.formatted.cmpsize;
|
|
}
|
|
i = 'n';
|
|
} else if (dst_fd == STDOUT_FILENO) { /* Extracting to STDOUT */
|
|
i = -1;
|
|
} else if (last_char_is(dst_fn, '/')) { /* Extract directory */
|
|
if (stat(dst_fn, &stat_buf) == -1) {
|
|
if (errno != ENOENT) {
|
|
bb_perror_msg_and_die("can't stat '%s'", dst_fn);
|
|
}
|
|
if (!quiet) {
|
|
printf(" creating: %s\n", dst_fn);
|
|
}
|
|
unzip_create_leading_dirs(dst_fn);
|
|
if (bb_make_directory(dst_fn, dir_mode, 0)) {
|
|
bb_error_msg_and_die("exiting");
|
|
}
|
|
} else {
|
|
if (!S_ISDIR(stat_buf.st_mode)) {
|
|
bb_error_msg_and_die("'%s' exists but is not directory", dst_fn);
|
|
}
|
|
}
|
|
i = 'n';
|
|
|
|
} else { /* Extract file */
|
|
check_file:
|
|
if (stat(dst_fn, &stat_buf) == -1) { /* File does not exist */
|
|
if (errno != ENOENT) {
|
|
bb_perror_msg_and_die("can't stat '%s'", dst_fn);
|
|
}
|
|
i = 'y';
|
|
} else { /* File already exists */
|
|
if (overwrite == O_NEVER) {
|
|
i = 'n';
|
|
} else if (S_ISREG(stat_buf.st_mode)) { /* File is regular file */
|
|
if (overwrite == O_ALWAYS) {
|
|
i = 'y';
|
|
} else {
|
|
printf("replace %s? [y]es, [n]o, [A]ll, [N]one, [r]ename: ", dst_fn);
|
|
if (!fgets(key_buf, sizeof(key_buf), stdin)) {
|
|
bb_perror_msg_and_die("can't read input");
|
|
}
|
|
i = key_buf[0];
|
|
}
|
|
} else { /* File is not regular file */
|
|
bb_error_msg_and_die("'%s' exists but is not regular file", dst_fn);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
switch (i) {
|
|
case 'A':
|
|
overwrite = O_ALWAYS;
|
|
case 'y': /* Open file and fall into unzip */
|
|
unzip_create_leading_dirs(dst_fn);
|
|
#if ENABLE_DESKTOP
|
|
dst_fd = xopen3(dst_fn, O_WRONLY | O_CREAT | O_TRUNC, file_mode);
|
|
#else
|
|
dst_fd = xopen(dst_fn, O_WRONLY | O_CREAT | O_TRUNC);
|
|
#endif
|
|
case -1: /* Unzip */
|
|
if (!quiet) {
|
|
printf(" inflating: %s\n", dst_fn);
|
|
}
|
|
unzip_extract(&zip_header, dst_fd);
|
|
if (dst_fd != STDOUT_FILENO) {
|
|
/* closing STDOUT is potentially bad for future business */
|
|
close(dst_fd);
|
|
}
|
|
break;
|
|
|
|
case 'N':
|
|
overwrite = O_NEVER;
|
|
case 'n':
|
|
/* Skip entry data */
|
|
unzip_skip(zip_header.formatted.cmpsize);
|
|
break;
|
|
|
|
case 'r':
|
|
/* Prompt for new name */
|
|
printf("new name: ");
|
|
if (!fgets(key_buf, sizeof(key_buf), stdin)) {
|
|
bb_perror_msg_and_die("can't read input");
|
|
}
|
|
free(dst_fn);
|
|
dst_fn = xstrdup(key_buf);
|
|
chomp(dst_fn);
|
|
goto check_file;
|
|
|
|
default:
|
|
printf("error: invalid response [%c]\n", (char)i);
|
|
goto check_file;
|
|
}
|
|
|
|
total_entries++;
|
|
}
|
|
|
|
if (listing && quiet <= 1) {
|
|
if (!verbose) {
|
|
// " Length Date Time Name\n"
|
|
// " -------- ---- ---- ----"
|
|
printf( " -------- -------\n"
|
|
"%9lu" " %u files\n",
|
|
total_usize, total_entries);
|
|
} else {
|
|
unsigned long percents = total_usize - total_size;
|
|
percents = percents * 100;
|
|
if (total_usize)
|
|
percents /= total_usize;
|
|
// " Length Method Size Ratio Date Time CRC-32 Name\n"
|
|
// "-------- ------ ------- ----- ---- ---- ------ ----"
|
|
printf( "-------- ------- --- -------\n"
|
|
"%8lu" "%17lu%4u%% %u files\n",
|
|
total_usize, total_size, (unsigned)percents,
|
|
total_entries);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|