* Loosely based on original busybox unzip applet by Laurence Anderson.
* All options and features should work in this version.
*
- * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ * 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
- * Endian issues
+ *
+ * TODO
* Zip64 + other methods
- * Improve handling of zip format, ie.
- * - deferred CRC, comp. & uncomp. lengths (zip header flags bit 3)
- * - unix file permissions, etc.
- * - central directory
*/
+//config:config UNZIP
+//config: bool "unzip (24 kb)"
+//config: default y
+//config: help
+//config: unzip will list or extract files from a ZIP archive,
+//config: commonly found on DOS/WIN systems. The default behavior
+//config: (with no options) is to extract the archive into the
+//config: current directory.
+//config:
+//config:config FEATURE_UNZIP_CDF
+//config: bool "Read and use Central Directory data"
+//config: default y
+//config: depends on UNZIP
+//config: help
+//config: If you know that you only need to deal with simple
+//config: ZIP files without deleted/updated files, SFX archives etc,
+//config: you can reduce code size by unselecting this option.
+//config: To support less trivial ZIPs, say Y.
+//config:
+//config:config FEATURE_UNZIP_BZIP2
+//config: bool "Support compression method 12 (bzip2)"
+//config: default y
+//config: depends on FEATURE_UNZIP_CDF && DESKTOP
+// FEATURE_UNZIP_CDF is needed, otherwise we can't find start of next file
+// DESKTOP is needed to get back uncompressed length
+//config:
+//config:config FEATURE_UNZIP_LZMA
+//config: bool "Support compression method 14 (lzma)"
+//config: default y
+//config: depends on FEATURE_UNZIP_CDF && DESKTOP
+//config:
+//config:config FEATURE_UNZIP_XZ
+//config: bool "Support compression method 95 (xz)"
+//config: default y
+//config: depends on FEATURE_UNZIP_CDF && DESKTOP
+
+//applet:IF_UNZIP(APPLET(unzip, BB_DIR_USR_BIN, BB_SUID_DROP))
+//kbuild:lib-$(CONFIG_UNZIP) += unzip.o
+
+//usage:#define unzip_trivial_usage
+//usage: "[-lnopq] FILE[.zip] [FILE]... [-x FILE...] [-d DIR]"
+//usage:#define unzip_full_usage "\n\n"
+//usage: "Extract FILEs from ZIP archive\n"
+//usage: "\n -l List contents (with -q for short form)"
+//usage: "\n -n Never overwrite files (default: ask)"
+//usage: "\n -o Overwrite"
+//usage: "\n -j Do not restore paths"
+//usage: "\n -p Print to stdout"
+//usage: "\n -q Quiet"
+//usage: "\n -x FILE Exclude FILEs"
+//usage: "\n -d DIR Extract into DIR"
+
+#include "libbb.h"
+#include "bb_archive.h"
+
+#if 0
+# define dbg(...) bb_error_msg(__VA_ARGS__)
+#else
+# define dbg(...) ((void)0)
+#endif
-#include <fcntl.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
-#include "unarchive.h"
-#include "busybox.h"
-
-#if (BYTE_ORDER == BIG_ENDIAN)
-static inline unsigned short
-__swap16(unsigned short x) {
- return (((uint16_t)(x) & 0xFF) << 8) | (((uint16_t)(x) & 0xFF00) >> 8);
-}
-
-static inline uint32_t
-__swap32(uint32_t x) {
- return (((x & 0xFF) << 24) |
- ((x & 0xFF00) << 8) |
- ((x & 0xFF0000) >> 8) |
- ((x & 0xFF000000) >> 24));
-}
+enum {
+#if BB_BIG_ENDIAN
+ ZIP_FILEHEADER_MAGIC = 0x504b0304,
+ ZIP_CDF_MAGIC = 0x504b0102, /* CDF item */
+ ZIP_CDE_MAGIC = 0x504b0506, /* End of CDF */
+ ZIP_DD_MAGIC = 0x504b0708,
#else
-#define __swap16(x) (x)
-#define __swap32(x) (x)
+ ZIP_FILEHEADER_MAGIC = 0x04034b50,
+ ZIP_CDF_MAGIC = 0x02014b50,
+ ZIP_CDE_MAGIC = 0x06054b50,
+ ZIP_DD_MAGIC = 0x08074b50,
#endif
+};
-#define ZIP_FILEHEADER_MAGIC __swap32(0x04034b50)
-#define ZIP_CDS_MAGIC __swap32(0x02014b50)
-#define ZIP_CDS_END_MAGIC __swap32(0x06054b50)
-#define ZIP_DD_MAGIC __swap32(0x08074b50)
+#define ZIP_HEADER_LEN 26
-extern unsigned int gunzip_crc;
-extern unsigned int gunzip_bytes_out;
+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 */
+ /* filename follows (not NUL terminated) */
+ /* extra field follows */
+ /* data follows */
+ } fmt PACKED;
+} zip_header_t; /* PACKED - gcc 4.2.1 doesn't like it (spews warning) */
+
+#define FIX_ENDIANNESS_ZIP(zip) \
+do { if (BB_BIG_ENDIAN) { \
+ (zip).fmt.method = SWAP_LE16((zip).fmt.method ); \
+ (zip).fmt.crc32 = SWAP_LE32((zip).fmt.crc32 ); \
+ (zip).fmt.cmpsize = SWAP_LE32((zip).fmt.cmpsize ); \
+ (zip).fmt.ucmpsize = SWAP_LE32((zip).fmt.ucmpsize ); \
+ (zip).fmt.filename_len = SWAP_LE16((zip).fmt.filename_len); \
+ (zip).fmt.extra_len = SWAP_LE16((zip).fmt.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 modtime; /* 8-9 */
+ uint16_t moddate; /* 10-11 */
+ uint32_t crc32; /* 12-15 */
+ uint32_t cmpsize; /* 16-19 */
+ uint32_t ucmpsize; /* 20-23 */
+ uint16_t filename_len; /* 24-25 */
+ uint16_t extra_len; /* 26-27 */
+ uint16_t file_comment_length; /* 28-29 */
+ uint16_t disk_number_start; /* 30-31 */
+ uint16_t internal_attributes; /* 32-33 */
+ uint32_t external_attributes PACKED; /* 34-37 */
+ uint32_t relative_offset_of_local_header PACKED; /* 38-41 */
+ /* filename follows (not NUL terminated) */
+ /* extra field follows */
+ /* file comment follows */
+ } fmt PACKED;
+} cdf_header_t;
+
+#define FIX_ENDIANNESS_CDF(cdf) \
+do { if (BB_BIG_ENDIAN) { \
+ (cdf).fmt.version_made_by = SWAP_LE16((cdf).fmt.version_made_by); \
+ (cdf).fmt.version_needed = SWAP_LE16((cdf).fmt.version_needed); \
+ (cdf).fmt.method = SWAP_LE16((cdf).fmt.method ); \
+ (cdf).fmt.modtime = SWAP_LE16((cdf).fmt.modtime ); \
+ (cdf).fmt.moddate = SWAP_LE16((cdf).fmt.moddate ); \
+ (cdf).fmt.crc32 = SWAP_LE32((cdf).fmt.crc32 ); \
+ (cdf).fmt.cmpsize = SWAP_LE32((cdf).fmt.cmpsize ); \
+ (cdf).fmt.ucmpsize = SWAP_LE32((cdf).fmt.ucmpsize ); \
+ (cdf).fmt.filename_len = SWAP_LE16((cdf).fmt.filename_len); \
+ (cdf).fmt.extra_len = SWAP_LE16((cdf).fmt.extra_len ); \
+ (cdf).fmt.file_comment_length = SWAP_LE16((cdf).fmt.file_comment_length); \
+ (cdf).fmt.external_attributes = SWAP_LE32((cdf).fmt.external_attributes); \
+}} while (0)
+
+#define CDE_LEN 16
typedef union {
- unsigned char raw[26];
+ uint8_t raw[CDE_LEN];
struct {
- unsigned short version; /* 0-1 */
- unsigned short flags; /* 2-3 */
- unsigned short method; /* 4-5 */
- unsigned short modtime; /* 6-7 */
- unsigned short moddate; /* 8-9 */
- unsigned int crc32 ATTRIBUTE_PACKED; /* 10-13 */
- unsigned int cmpsize ATTRIBUTE_PACKED; /* 14-17 */
- unsigned int ucmpsize ATTRIBUTE_PACKED; /* 18-21 */
- unsigned short filename_len; /* 22-23 */
- unsigned short extra_len; /* 24-25 */
- } formated ATTRIBUTE_PACKED;
-} zip_header_t;
-
-static void unzip_skip(int fd, off_t skip)
+ /* 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 archive_comment_length; */
+ /* archive comment follows */
+ } fmt PACKED;
+} cde_t;
+
+#define FIX_ENDIANNESS_CDE(cde) \
+do { if (BB_BIG_ENDIAN) { \
+ (cde).fmt.cdf_offset = SWAP_LE32((cde).fmt.cdf_offset); \
+}} while (0)
+
+struct BUG {
+ /* 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.
+ */
+ char BUG_zip_header_must_be_26_bytes[
+ offsetof(zip_header_t, fmt.extra_len) + 2
+ == ZIP_HEADER_LEN ? 1 : -1];
+ char BUG_cdf_header_must_be_42_bytes[
+ offsetof(cdf_header_t, fmt.relative_offset_of_local_header) + 4
+ == CDF_HEADER_LEN ? 1 : -1];
+ char BUG_cde_must_be_16_bytes[
+ sizeof(cde_t) == CDE_LEN ? 1 : -1];
+};
+
+
+enum { zip_fd = 3 };
+
+
+/* This value means that we failed to find CDF */
+#define BAD_CDF_OFFSET ((uint32_t)0xffffffff)
+
+#if !ENABLE_FEATURE_UNZIP_CDF
+
+# define find_cdf_offset() BAD_CDF_OFFSET
+
+#else
+/* Seen in the wild:
+ * Self-extracting PRO2K3XP_32.exe contains 19078464 byte zip archive,
+ * where CDE was nearly 48 kbytes before EOF.
+ * (Surprisingly, it also apparently has *another* CDE structure
+ * closer to the end, with bogus cdf_offset).
+ * To make extraction work, bumped PEEK_FROM_END from 16k to 64k.
+ */
+#define PEEK_FROM_END (64*1024)
+/* NB: does not preserve file position! */
+static uint32_t find_cdf_offset(void)
{
- if (lseek(fd, skip, SEEK_CUR) == (off_t)-1) {
- if ((errno != ESPIPE) || (bb_copyfd_size(fd, -1, skip) != skip)) {
- bb_error_msg_and_die("Seek failure");
+ cde_t cde;
+ unsigned char *buf;
+ unsigned char *p;
+ off_t end;
+ uint32_t found;
+
+ end = lseek(zip_fd, 0, SEEK_END);
+ if (end == (off_t) -1)
+ return BAD_CDF_OFFSET;
+
+ end -= PEEK_FROM_END;
+ if (end < 0)
+ end = 0;
+
+ dbg("Looking for cdf_offset starting from 0x%"OFF_FMT"x", end);
+ xlseek(zip_fd, end, SEEK_SET);
+ buf = xzalloc(PEEK_FROM_END);
+ full_read(zip_fd, buf, PEEK_FROM_END);
+
+ found = BAD_CDF_OFFSET;
+ p = buf;
+ while (p <= buf + PEEK_FROM_END - CDE_LEN - 4) {
+ if (*p != 'P') {
+ p++;
+ continue;
+ }
+ if (*++p != 'K')
+ continue;
+ if (*++p != 5)
+ continue;
+ if (*++p != 6)
+ continue;
+ /* we found CDE! */
+ memcpy(cde.raw, p + 1, CDE_LEN);
+ FIX_ENDIANNESS_CDE(cde);
+ /*
+ * I've seen .ZIP files with seemingly valid CDEs
+ * where cdf_offset points past EOF - ??
+ * This check ignores such CDEs:
+ */
+ if (cde.fmt.cdf_offset < end + (p - buf)) {
+ found = cde.fmt.cdf_offset;
+ dbg("Possible cdf_offset:0x%x at 0x%"OFF_FMT"x",
+ (unsigned)found, end + (p-3 - buf));
+ dbg(" cdf_offset+cdf_size:0x%x",
+ (unsigned)(found + SWAP_LE32(cde.fmt.cdf_size)));
+ /*
+ * We do not "break" here because only the last CDE is valid.
+ * I've seen a .zip archive which contained a .zip file,
+ * uncompressed, and taking the first CDE was using
+ * the CDE inside that file!
+ */
}
}
-}
+ free(buf);
+ dbg("Found cdf_offset:0x%x", (unsigned)found);
+ return found;
+};
-static void unzip_read(int fd, void *buf, size_t count)
+static uint32_t read_next_cdf(uint32_t cdf_offset, cdf_header_t *cdf)
{
- if (bb_xread(fd, buf, count) != count) {
- bb_error_msg_and_die("Read failure");
+ uint32_t magic;
+
+ if (cdf_offset == BAD_CDF_OFFSET)
+ return cdf_offset;
+
+ dbg("Reading CDF at 0x%x", (unsigned)cdf_offset);
+ xlseek(zip_fd, cdf_offset, SEEK_SET);
+ xread(zip_fd, &magic, 4);
+ /* Central Directory End? Assume CDF has ended.
+ * (more correct method is to use cde.cdf_entries_total counter)
+ */
+ if (magic == ZIP_CDE_MAGIC) {
+ dbg("got ZIP_CDE_MAGIC");
+ return 0; /* EOF */
}
+ xread(zip_fd, cdf->raw, CDF_HEADER_LEN);
+
+ FIX_ENDIANNESS_CDF(*cdf);
+ dbg(" filename_len:%u extra_len:%u file_comment_length:%u",
+ (unsigned)cdf->fmt.filename_len,
+ (unsigned)cdf->fmt.extra_len,
+ (unsigned)cdf->fmt.file_comment_length
+ );
+ cdf_offset += 4 + CDF_HEADER_LEN
+ + cdf->fmt.filename_len
+ + cdf->fmt.extra_len
+ + cdf->fmt.file_comment_length;
+
+ return cdf_offset;
+};
+#endif
+
+static void die_if_bad_fnamesize(unsigned sz)
+{
+ if (sz > 0xfff) /* more than 4k?! no funny business please */
+ bb_error_msg_and_die("bad archive");
}
-static void unzip_create_leading_dirs(char *fn)
+static void unzip_skip(off_t skip)
+{
+ if (skip != 0)
+ 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 = bb_xstrdup(fn);
+ char *name = xstrdup(fn);
if (bb_make_directory(dirname(name), 0777, FILEUTILS_RECUR)) {
- bb_error_msg_and_die("Failed to create directory");
+ xfunc_die(); /* bb_make_directory is noisy */
}
free(name);
}
-static void unzip_extract(zip_header_t *zip_header, int src_fd, int dst_fd)
+#if ENABLE_FEATURE_UNZIP_CDF
+static void unzip_extract_symlink(zip_header_t *zip, const char *dst_fn)
{
- if (zip_header->formated.method == 0) {
+ char *target;
+
+ die_if_bad_fnamesize(zip->fmt.ucmpsize);
+
+ if (zip->fmt.method == 0) {
/* Method 0 - stored (not compressed) */
- int size = zip_header->formated.ucmpsize;
- if (size && (bb_copyfd_size(src_fd, dst_fd, size) != size)) {
- bb_error_msg_and_die("Cannot complete extraction");
+ target = xzalloc(zip->fmt.ucmpsize + 1);
+ xread(zip_fd, target, zip->fmt.ucmpsize);
+ } else {
+#if 1
+ bb_error_msg_and_die("compressed symlink is not supported");
+#else
+ transformer_state_t xstate;
+ init_transformer_state(&xstate);
+ xstate.mem_output_size_max = zip->fmt.ucmpsize;
+ /* ...unpack... */
+ if (!xstate.mem_output_buf)
+ WTF();
+ target = xstate.mem_output_buf;
+ target = xrealloc(target, xstate.mem_output_size + 1);
+ target[xstate.mem_output_size] = '\0';
+#endif
+ }
+ if (!unsafe_symlink_target(target)) {
+//TODO: libbb candidate
+ if (symlink(target, dst_fn)) {
+ /* shared message */
+ bb_perror_msg_and_die("can't create %slink '%s' to '%s'",
+ "sym", dst_fn, target
+ );
}
+ }
+ free(target);
+}
+#endif
- } else {
+static void unzip_extract(zip_header_t *zip, int dst_fd)
+{
+ transformer_state_t xstate;
+
+ if (zip->fmt.method == 0) {
+ /* Method 0 - stored (not compressed) */
+ off_t size = zip->fmt.ucmpsize;
+ if (size)
+ bb_copyfd_exact_size(zip_fd, dst_fd, size);
+ return;
+ }
+
+ init_transformer_state(&xstate);
+ xstate.bytes_in = zip->fmt.cmpsize;
+ xstate.src_fd = zip_fd;
+ xstate.dst_fd = dst_fd;
+ if (zip->fmt.method == 8) {
/* Method 8 - inflate */
- inflate_init(zip_header->formated.cmpsize);
- inflate_unzip(src_fd, dst_fd);
- inflate_cleanup();
+ if (inflate_unzip(&xstate) < 0)
+ bb_error_msg_and_die("inflate error");
/* Validate decompression - crc */
- if (zip_header->formated.crc32 != (gunzip_crc ^ 0xffffffffL)) {
- bb_error_msg("Invalid compressed data--crc error");
+ if (zip->fmt.crc32 != (xstate.crc32 ^ 0xffffffffL)) {
+ bb_error_msg_and_die("crc error");
}
- /* Validate decompression - size */
- if (zip_header->formated.ucmpsize != gunzip_bytes_out) {
- bb_error_msg("Invalid compressed data--length error");
+ }
+#if ENABLE_FEATURE_UNZIP_BZIP2
+ else if (zip->fmt.method == 12) {
+ /* Tested. Unpacker reads too much, but we use CDF
+ * and will seek to the correct beginning of next file.
+ */
+ xstate.bytes_out = unpack_bz2_stream(&xstate);
+ if (xstate.bytes_out < 0)
+ bb_error_msg_and_die("inflate error");
+ }
+#endif
+#if ENABLE_FEATURE_UNZIP_LZMA
+ else if (zip->fmt.method == 14) {
+ /* Not tested yet */
+ xstate.bytes_out = unpack_lzma_stream(&xstate);
+ if (xstate.bytes_out < 0)
+ bb_error_msg_and_die("inflate error");
+ }
+#endif
+#if ENABLE_FEATURE_UNZIP_XZ
+ else if (zip->fmt.method == 95) {
+ /* Not tested yet */
+ xstate.bytes_out = unpack_xz_stream(&xstate);
+ if (xstate.bytes_out < 0)
+ bb_error_msg_and_die("inflate error");
+ }
+#endif
+ else {
+ bb_error_msg_and_die("unsupported method %u", zip->fmt.method);
+ }
+
+ /* Validate decompression - size */
+ if (zip->fmt.ucmpsize != xstate.bytes_out) {
+ /* Don't die. Who knows, maybe len calculation
+ * was botched somewhere. After all, crc matched! */
+ bb_error_msg("bad length");
+ }
+}
+
+static void my_fgets80(char *buf80)
+{
+ fflush_all();
+ if (!fgets(buf80, 80, stdin)) {
+ bb_perror_msg_and_die("can't read standard input");
+ }
+}
+
+static int get_lstat_mode(const char *dst_fn)
+{
+ struct stat stat_buf;
+ if (lstat(dst_fn, &stat_buf) == -1) {
+ if (errno != ENOENT) {
+ bb_perror_msg_and_die("can't stat '%s'", dst_fn);
}
+ /* File does not exist */
+ return -1;
}
+ return stat_buf.st_mode;
}
-extern int unzip_main(int argc, char **argv)
+int unzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int unzip_main(int argc, char **argv)
{
- zip_header_t zip_header;
- enum {v_silent, v_normal, v_list} verbosity = v_normal;
- enum {o_prompt, o_never, o_always} overwrite = o_prompt;
- unsigned int total_size = 0;
- unsigned int total_entries = 0;
- int src_fd = -1, dst_fd = -1;
- char *src_fn = NULL, *dst_fn = NULL;
+ enum {
+ OPT_l = (1 << 0),
+ OPT_x = (1 << 1),
+ OPT_j = (1 << 2),
+ };
+ unsigned opts;
+ smallint quiet = 0;
+ IF_NOT_FEATURE_UNZIP_CDF(const) smallint verbose = 0;
+ enum { O_PROMPT, O_NEVER, O_ALWAYS };
+ smallint overwrite = O_PROMPT;
+ uint32_t cdf_offset;
+ 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, opt_range = 0, list_header_done = 0;
- char key_buf[512];
- struct stat stat_buf;
+ int i;
+ char key_buf[80]; /* must match size used by my_fgets80 */
- while((opt = getopt(argc, argv, "-d:lnopqx")) != -1) {
- switch(opt_range) {
- case 0: /* Options */
- switch(opt) {
- case 'l': /* List */
- verbosity = v_list;
- 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 */
- verbosity = (verbosity == v_normal) ? v_silent : verbosity;
- break;
+/* -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
+ */
- case 1 : /* The zip file */
- src_fn = bb_xstrndup(optarg, strlen(optarg)+4);
- opt_range++;
- break;
+ opts = 0;
+ /* '-' makes getopt return 1 for non-options */
+ while ((i = getopt(argc, argv, "-d:lnopqxjv")) != -1) {
+ switch (i) {
+ case 'd': /* Extract to base directory */
+ base_dir = optarg;
+ break;
- default:
- bb_show_usage();
+ case 'l': /* List */
+ opts |= OPT_l;
+ break;
- }
+ case 'n': /* Never overwrite existing files */
+ overwrite = O_NEVER;
break;
- case 1: /* Include files */
- if (opt == 1) {
- zaccept = llist_add_to(zaccept, optarg);
+ case 'o': /* Always overwrite existing files */
+ overwrite = O_ALWAYS;
+ break;
- } else if (opt == 'd') {
- base_dir = optarg;
- opt_range += 2;
+ case 'p': /* Extract files to stdout and fall through to set verbosity */
+ dst_fd = STDOUT_FILENO;
- } else if (opt == 'x') {
- opt_range++;
+ case 'q': /* Be quiet */
+ quiet++;
+ break;
- } else {
- bb_show_usage();
- }
+ case 'v': /* Verbose list */
+ IF_FEATURE_UNZIP_CDF(verbose++;)
+ opts |= OPT_l;
break;
- case 2 : /* Exclude files */
- if (opt == 1) {
- zreject = llist_add_to(zreject, optarg);
+ case 'x':
+ opts |= OPT_x;
+ break;
- } else if (opt == 'd') { /* Extract to base directory */
- base_dir = optarg;
- opt_range++;
+ case 'j':
+ opts |= OPT_j;
+ break;
+ case 1:
+ if (!src_fn) {
+ /* The zip file */
+ /* +5: space for ".zip" and NUL */
+ src_fn = xmalloc(strlen(optarg) + 5);
+ strcpy(src_fn, optarg);
+ } else if (!(opts & OPT_x)) {
+ /* Include files */
+ llist_add_to(&zaccept, optarg);
} else {
- bb_show_usage();
+ /* Exclude files */
+ llist_add_to(&zreject, optarg);
}
break;
}
}
- if (src_fn == NULL) {
+#ifndef __GLIBC__
+ /*
+ * This code is needed for non-GNU getopt
+ * which doesn't understand "-" in option string.
+ * The -x option won't work properly in this case:
+ * "unzip a.zip q -x w e" will be interpreted as
+ * "unzip a.zip q w e -x" = "unzip a.zip q w e"
+ */
+ argv += optind;
+ if (argv[0]) {
+ /* +5: space for ".zip" and NUL */
+ src_fn = xmalloc(strlen(argv[0]) + 5);
+ strcpy(src_fn, argv[0]);
+ while (*++argv)
+ llist_add_to(&zaccept, *argv);
+ }
+#endif
+
+ if (!src_fn) {
bb_show_usage();
}
/* Open input file */
- if (strcmp("-", src_fn) == 0) {
- src_fd = STDIN_FILENO;
+ if (LONE_DASH(src_fn)) {
+ xdup2(STDIN_FILENO, zip_fd);
/* Cannot use prompt mode since zip data is arriving on STDIN */
- overwrite = (overwrite == o_prompt) ? o_never : overwrite;
-
+ if (overwrite == O_PROMPT)
+ overwrite = O_NEVER;
} else {
- static const char *const extn[] = {"", ".zip", ".ZIP"};
- int orig_src_fn_len = strlen(src_fn);
- for(i = 0; (i < 3) && (src_fd == -1); i++) {
- strcpy(src_fn + orig_src_fn_len, extn[i]);
+ static const char extn[][5] ALIGN1 = { ".zip", ".ZIP" };
+ char *ext = src_fn + strlen(src_fn);
+ int src_fd;
+
+ i = 0;
+ for (;;) {
src_fd = open(src_fn, O_RDONLY);
+ if (src_fd >= 0)
+ break;
+ if (++i > 2) {
+ *ext = '\0';
+ bb_error_msg_and_die("can't open %s[.zip]", src_fn);
+ }
+ strcpy(ext, extn[i - 1]);
}
- if (src_fd == -1) {
- src_fn[orig_src_fn_len] = 0;
- bb_error_msg_and_die("Cannot 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 && chdir(base_dir)) {
- bb_perror_msg_and_die("Cannot chdir");
+ if (base_dir)
+ xchdir(base_dir);
+
+ if (quiet <= 1) { /* not -qq */
+ if (quiet == 0)
+ printf("Archive: %s\n", src_fn);
+ if (opts & OPT_l) {
+ puts(verbose ?
+ " Length Method Size Cmpr Date Time CRC-32 Name\n"
+ "-------- ------ ------- ---- ---------- ----- -------- ----"
+ :
+ " Length Date Time Name\n"
+ "--------- ---------- ----- ----"
+ );
+ }
}
- if (verbosity != v_silent)
- printf("Archive: %s\n", src_fn);
-
+/* 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;
+ cdf_offset = find_cdf_offset(); /* try to seek to the end, find CDE and CDF start */
while (1) {
- unsigned int magic;
+ zip_header_t zip;
+ mode_t dir_mode = 0777;
+#if ENABLE_FEATURE_UNZIP_CDF
+ mode_t file_mode = 0666;
+#endif
- /* Check magic number */
- unzip_read(src_fd, &magic, 4);
- if (magic == ZIP_CDS_MAGIC) {
- break;
- } else if (magic != ZIP_FILEHEADER_MAGIC) {
- bb_error_msg_and_die("Invalid zip magic %08X", magic);
+ if (!ENABLE_FEATURE_UNZIP_CDF || cdf_offset == BAD_CDF_OFFSET) {
+ /* Normally happens when input is unseekable.
+ *
+ * Valid ZIP file has Central Directory at the end
+ * with central directory file headers (CDFs).
+ * After it, there is a Central Directory End structure.
+ * CDFs identify what files are in the ZIP and where
+ * they are located. This allows ZIP readers to load
+ * the list of files without reading the entire ZIP archive.
+ * ZIP files may be appended to, only files specified in
+ * the CD are valid. Scanning for local file headers is
+ * not a correct algorithm.
+ *
+ * We try to do the above, and resort to "linear" reading
+ * of ZIP file only if seek failed or CDE wasn't found.
+ */
+ uint32_t magic;
+
+ /* Check magic number */
+ xread(zip_fd, &magic, 4);
+ /* CDF item? Assume there are no more files, exit */
+ if (magic == ZIP_CDF_MAGIC) {
+ dbg("got ZIP_CDF_MAGIC");
+ break;
+ }
+ /* Data descriptor? It was a streaming file, go on */
+ if (magic == ZIP_DD_MAGIC) {
+ dbg("got ZIP_DD_MAGIC");
+ /* skip over duplicate crc32, cmpsize and ucmpsize */
+ unzip_skip(3 * 4);
+ continue;
+ }
+ if (magic != ZIP_FILEHEADER_MAGIC)
+ bb_error_msg_and_die("invalid zip magic %08X", (int)magic);
+ dbg("got ZIP_FILEHEADER_MAGIC");
+
+ xread(zip_fd, zip.raw, ZIP_HEADER_LEN);
+ FIX_ENDIANNESS_ZIP(zip);
+ if (zip.fmt.zip_flags & SWAP_LE16(0x0008)) {
+ bb_error_msg_and_die("zip flag %s is not supported",
+ "8 (streaming)");
+ }
+ }
+#if ENABLE_FEATURE_UNZIP_CDF
+ else {
+ /* cdf_offset is valid (and we know the file is seekable) */
+ cdf_header_t cdf;
+ cdf_offset = read_next_cdf(cdf_offset, &cdf);
+ if (cdf_offset == 0) /* EOF? */
+ break;
+# if 1
+ xlseek(zip_fd,
+ SWAP_LE32(cdf.fmt.relative_offset_of_local_header) + 4,
+ SEEK_SET);
+ xread(zip_fd, zip.raw, ZIP_HEADER_LEN);
+ FIX_ENDIANNESS_ZIP(zip);
+ if (zip.fmt.zip_flags & SWAP_LE16(0x0008)) {
+ /* 0x0008 - streaming. [u]cmpsize can be reliably gotten
+ * only from Central Directory.
+ */
+ zip.fmt.crc32 = cdf.fmt.crc32;
+ zip.fmt.cmpsize = cdf.fmt.cmpsize;
+ zip.fmt.ucmpsize = cdf.fmt.ucmpsize;
+ }
+// Seen in some zipfiles: central directory 9 byte extra field contains
+// a subfield with ID 0x5455 and 5 data bytes, which is a Unix-style UTC mtime.
+// Local header version:
+// u16 0x5455 ("UT")
+// u16 size (1 + 4 * n)
+// u8 flags: bit 0:mtime is present, bit 1:atime is present, bit 2:ctime is present
+// u32 mtime
+// u32 atime
+// u32 ctime
+// Central header version:
+// u16 0x5455 ("UT")
+// u16 size (5 (or 1?))
+// u8 flags: bit 0:mtime is present, bit 1:atime is present, bit 2:ctime is present
+// u32 mtime (CDF does not store atime/ctime)
+# else
+ /* CDF has the same data as local header, no need to read the latter...
+ * ...not really. An archive was seen with cdf.extra_len == 6 but
+ * zip.extra_len == 0.
+ */
+ memcpy(&zip.fmt.version,
+ &cdf.fmt.version_needed, ZIP_HEADER_LEN);
+ xlseek(zip_fd,
+ SWAP_LE32(cdf.fmt.relative_offset_of_local_header) + 4 + ZIP_HEADER_LEN,
+ SEEK_SET);
+# endif
+ if ((cdf.fmt.version_made_by >> 8) == 3) {
+ /* This archive is created on Unix */
+ dir_mode = file_mode = (cdf.fmt.external_attributes >> 16);
+ }
}
-
- /* Read the file header */
- unzip_read(src_fd, zip_header.raw, 26);
-#if (BYTE_ORDER == BIG_ENDIAN)
- zip_header.formated.version = __swap16(zip_header.formated.version);
- zip_header.formated.flags = __swap16(zip_header.formated.flags);
- zip_header.formated.method = __swap16(zip_header.formated.method);
- zip_header.formated.modtime = __swap16(zip_header.formated.modtime);
- zip_header.formated.moddate = __swap16(zip_header.formated.moddate);
- zip_header.formated.crc32 = __swap32(zip_header.formated.crc32);
- zip_header.formated.cmpsize = __swap32(zip_header.formated.cmpsize);
- zip_header.formated.ucmpsize = __swap32(zip_header.formated.ucmpsize);
- zip_header.formated.filename_len = __swap16(zip_header.formated.filename_len);
- zip_header.formated.extra_len = __swap16(zip_header.formated.extra_len);
#endif
- if ((zip_header.formated.method != 0) && (zip_header.formated.method != 8)) {
- bb_error_msg_and_die("Unsupported compression method %d", zip_header.formated.method);
+
+ if (zip.fmt.zip_flags & SWAP_LE16(0x0001)) {
+ /* 0x0001 - encrypted */
+ bb_error_msg_and_die("zip flag %s is not supported",
+ "1 (encryption)");
}
+ dbg("File cmpsize:0x%x extra_len:0x%x ucmpsize:0x%x",
+ (unsigned)zip.fmt.cmpsize,
+ (unsigned)zip.fmt.extra_len,
+ (unsigned)zip.fmt.ucmpsize
+ );
/* Read filename */
free(dst_fn);
- dst_fn = xmalloc(zip_header.formated.filename_len + 1);
- unzip_read(src_fd, dst_fn, zip_header.formated.filename_len);
- dst_fn[zip_header.formated.filename_len] = 0;
-
+ die_if_bad_fnamesize(zip.fmt.filename_len);
+ dst_fn = xzalloc(zip.fmt.filename_len + 1);
+ xread(zip_fd, dst_fn, zip.fmt.filename_len);
/* Skip extra header bytes */
- unzip_skip(src_fd, zip_header.formated.extra_len);
+ unzip_skip(zip.fmt.extra_len);
- if ((verbosity == v_list) && !list_header_done){
- printf(" Length Date Time Name\n");
- printf(" -------- ---- ---- ----\n");
- list_header_done = 1;
- }
+ /* Guard against "/abspath", "/../" and similar attacks */
+ overlapping_strcpy(dst_fn, strip_unsafe_prefix(dst_fn));
+
+ if (opts & OPT_j) /* Strip paths? */
+ overlapping_strcpy(dst_fn, bb_basename(dst_fn));
+
+ /* Did this strip everything ("DIR/" case)? Then skip */
+ if (!dst_fn[0])
+ goto skip_cmpsize;
/* Filter zip entries */
- if (find_list_entry(zreject, dst_fn) ||
- (zaccept && !find_list_entry(zaccept, dst_fn))) { /* Skip entry */
- i = 'n';
-
- } else { /* Extract entry */
- total_size += zip_header.formated.ucmpsize;
-
- if (verbosity == v_list) { /* List entry */
- unsigned int dostime = zip_header.formated.modtime | (zip_header.formated.moddate << 16);
- printf("%9u %02u-%02u-%02u %02u:%02u %s\n",
- zip_header.formated.ucmpsize,
- (dostime & 0x01e00000) >> 21,
- (dostime & 0x001f0000) >> 16,
- (((dostime & 0xfe000000) >> 25) + 1980) % 100,
- (dostime & 0x0000f800) >> 11,
- (dostime & 0x000007e0) >> 5,
- dst_fn);
- total_entries++;
- 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("Cannot stat '%s'",dst_fn);
- }
- if (verbosity == v_normal) {
- printf(" creating: %s\n", dst_fn);
- }
- unzip_create_leading_dirs(dst_fn);
- if (bb_make_directory(dst_fn, 0777, 0)) {
- bb_error_msg_and_die("Failed to create directory");
- }
- } else {
- if (!S_ISDIR(stat_buf.st_mode)) {
- bb_error_msg_and_die("'%s' exists but is not directory", dst_fn);
- }
+ if (find_list_entry(zreject, dst_fn)
+ || (zaccept && !find_list_entry(zaccept, dst_fn))
+ ) { /* Skip entry */
+ goto skip_cmpsize;
+ }
+
+ if (opts & OPT_l) {
+ /* List entry */
+ char dtbuf[sizeof("mm-dd-yyyy hh:mm")];
+ sprintf(dtbuf, "%02u-%02u-%04u %02u:%02u",
+ (zip.fmt.moddate >> 5) & 0xf, // mm: 0x01e0
+ (zip.fmt.moddate) & 0x1f, // dd: 0x001f
+ (zip.fmt.moddate >> 9) + 1980, // yy: 0xfe00
+ (zip.fmt.modtime >> 11), // hh: 0xf800
+ (zip.fmt.modtime >> 5) & 0x3f // mm: 0x07e0
+ // seconds/2 not shown, encoded in -- 0x001f
+ );
+ if (!verbose) {
+ // " Length Date Time Name\n"
+ // "--------- ---------- ----- ----"
+ printf( "%9u " "%s " "%s\n",
+ (unsigned)zip.fmt.ucmpsize,
+ dtbuf,
+ dst_fn);
+ } else {
+ char method6[7];
+ unsigned long percents;
+
+ sprintf(method6, "%6u", zip.fmt.method);
+ if (zip.fmt.method == 0) {
+ strcpy(method6, "Stored");
}
- 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("Cannot 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, 512, stdin)) {
- bb_perror_msg_and_die("Cannot 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);
- }
+ if (zip.fmt.method == 8) {
+ strcpy(method6, "Defl:N");
+ /* normal, maximum, fast, superfast */
+ IF_DESKTOP(method6[5] = "NXFS"[(zip.fmt.zip_flags >> 1) & 3];)
}
+ percents = zip.fmt.ucmpsize - zip.fmt.cmpsize;
+ if ((int32_t)percents < 0)
+ percents = 0; /* happens if ucmpsize < cmpsize */
+ percents = percents * 100;
+ if (zip.fmt.ucmpsize)
+ percents /= zip.fmt.ucmpsize;
+ // " Length Method Size Cmpr Date Time CRC-32 Name\n"
+ // "-------- ------ ------- ---- ---------- ----- -------- ----"
+ printf( "%8u %s" "%9u%4u%% " "%s " "%08x " "%s\n",
+ (unsigned)zip.fmt.ucmpsize,
+ method6,
+ (unsigned)zip.fmt.cmpsize,
+ (unsigned)percents,
+ dtbuf,
+ zip.fmt.crc32,
+ dst_fn);
+ total_size += zip.fmt.cmpsize;
}
+ total_usize += zip.fmt.ucmpsize;
+ goto skip_cmpsize;
}
- switch (i) {
+ if (dst_fd == STDOUT_FILENO) {
+ /* Extracting to STDOUT */
+ goto do_extract;
+ }
+ if (last_char_is(dst_fn, '/')) {
+ int mode;
+
+ /* Extract directory */
+ mode = get_lstat_mode(dst_fn);
+ if (mode == -1) { /* ENOENT */
+ if (!quiet) {
+ printf(" creating: %s\n", dst_fn);
+ }
+ unzip_create_leading_dirs(dst_fn);
+ if (bb_make_directory(dst_fn, dir_mode, FILEUTILS_IGNORE_CHMOD_ERR)) {
+ xfunc_die();
+ }
+ } else {
+ if (!S_ISDIR(mode)) {
+ bb_error_msg_and_die("'%s' exists but is not a %s",
+ dst_fn, "directory");
+ }
+ }
+ goto skip_cmpsize;
+ }
+ check_file:
+ /* Does target file already exist? */
+ {
+ int mode = get_lstat_mode(dst_fn);
+ if (mode == -1) {
+ /* ENOENT: does not exist */
+ goto do_open_and_extract;
+ }
+ if (overwrite == O_NEVER) {
+ goto skip_cmpsize;
+ }
+ if (!S_ISREG(mode)) {
+ fishy:
+ bb_error_msg_and_die("'%s' exists but is not a %s",
+ dst_fn, "regular file");
+ }
+ if (overwrite == O_ALWAYS) {
+ goto do_open_and_extract;
+ }
+ printf("replace %s? [y]es, [n]o, [A]ll, [N]one, [r]ename: ", dst_fn);
+ my_fgets80(key_buf);
+ /* User input could take a long time. Is it still a regular file? */
+ mode = get_lstat_mode(dst_fn);
+ if (!S_ISREG(mode))
+ goto fishy;
+ }
+
+ /* Extract (or skip) it */
+ switch (key_buf[0]) {
case 'A':
- overwrite = o_always;
+ overwrite = O_ALWAYS;
case 'y': /* Open file and fall into unzip */
+ do_open_and_extract:
unzip_create_leading_dirs(dst_fn);
- dst_fd = bb_xopen(dst_fn, O_WRONLY | O_CREAT);
- case -1: /* Unzip */
- if (verbosity == v_normal) {
- printf(" inflating: %s\n", dst_fn);
+#if ENABLE_FEATURE_UNZIP_CDF
+ dst_fd = -1;
+ if (!S_ISLNK(file_mode)) {
+ dst_fd = xopen3(dst_fn,
+ O_WRONLY | O_CREAT | O_TRUNC | O_NOFOLLOW,
+ file_mode);
+ }
+#else
+ /* O_NOFOLLOW defends against symlink attacks */
+ dst_fd = xopen(dst_fn, O_WRONLY | O_CREAT | O_TRUNC | O_NOFOLLOW);
+#endif
+ do_extract:
+ if (!quiet) {
+ printf(/* zip.fmt.method == 0
+ ? " extracting: %s\n"
+ : */ " inflating: %s\n", dst_fn);
}
- unzip_extract(&zip_header, src_fd, dst_fd);
- if (dst_fd != STDOUT_FILENO) {
- /* closing STDOUT is potentially bad for future business */
- close(dst_fd);
+#if ENABLE_FEATURE_UNZIP_CDF
+ if (S_ISLNK(file_mode)) {
+ if (dst_fd != STDOUT_FILENO) /* not -p? */
+ unzip_extract_symlink(&zip, dst_fn);
+ } else
+#endif
+ {
+ unzip_extract(&zip, 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(src_fd, zip_header.formated.cmpsize);
+ overwrite = O_NEVER;
+ case 'n': /* Skip entry data */
+ skip_cmpsize:
+ unzip_skip(zip.fmt.cmpsize);
break;
case 'r':
/* Prompt for new name */
printf("new name: ");
- if (!fgets(key_buf, 512, stdin)) {
- bb_perror_msg_and_die("Cannot read input");
- }
+ my_fgets80(key_buf);
free(dst_fn);
- dst_fn = bb_xstrdup(key_buf);
+ dst_fn = xstrdup(key_buf);
chomp(dst_fn);
- goto _check_file;
+ goto check_file;
default:
- printf("error: invalid response [%c]\n",(char)i);
- goto _check_file;
+ printf("error: invalid response [%c]\n", (char)key_buf[0]);
+ goto check_file;
}
- /* Data descriptor section */
- if (zip_header.formated.flags & 4) {
- /* skip over duplicate crc, compressed size and uncompressed size */
- unzip_skip(src_fd, 12);
- }
+ total_entries++;
}
- if (verbosity == v_list) {
- printf(" -------- -------\n"
- "%9d %d files\n", total_size, total_entries);
+ if ((opts & OPT_l) && quiet <= 1) {
+ if (!verbose) {
+ // " Length Date Time Name\n"
+ // "--------- ---------- ----- ----"
+ printf( " --------%21s" "-------\n"
+ "%9lu%21s" "%u files\n",
+ "",
+ total_usize, "", total_entries);
+ } else {
+ unsigned long percents = total_usize - total_size;
+ if ((long)percents < 0)
+ percents = 0; /* happens if usize < size */
+ percents = percents * 100;
+ if (total_usize)
+ percents /= total_usize;
+ // " Length Method Size Cmpr Date Time CRC-32 Name\n"
+ // "-------- ------ ------- ---- ---------- ----- -------- ----"
+ printf( "-------- ------- ----%28s" "----\n"
+ "%8lu" "%17lu%4u%%%28s" "%u files\n",
+ "",
+ total_usize, total_size, (unsigned)percents, "",
+ total_entries);
+ }
}
- return(EXIT_SUCCESS);
+ return 0;
}
-
-/* END CODE */
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/