mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-07 06:53:33 +00:00
ff77f2a6af
- This change fixes a bug that allowed unbuffered printf() output (to streams like stderr) to be truncated. This regression was introduced some time between now and the last release. - POSIX specifies all functions as thread safe by default. This change works towards cleaning up our use of the @threadsafe / @threadunsafe documentation annotations to reflect that. The goal is (1) to use @threadunsafe to document functions which POSIX say needn't be thread safe, and (2) use @threadsafe to document functions that we chose to implement as thread safe even though POSIX didn't mandate it. - Tidy up the clock_gettime() implementation. We're now trying out a cleaner approach to system call support that aims to maintain the Linux errno convention as long as possible. This also fixes bugs that existed previously, where the vDSO errno wasn't being translated properly. The gettimeofday() system call is now a wrapper for clock_gettime(), which reduces bloat in apps that use both. - The recently-introduced improvements to the execute bit on Windows has had bugs fixed. access(X_OK) on a directory on Windows now succeeds. fstat() will now perform the MZ/#! ReadFile() operation correctly. - Windows.h is no longer included in libc/isystem/, because it confused PCRE's build system into thinking Cosmopolitan is a WIN32 platform. Cosmo's Windows.h polyfill was never even really that good, since it only defines a subset of the subset of WIN32 APIs that Cosmo defines. - The setlongerjmp() / longerjmp() APIs are removed. While they're nice APIs that are superior to the standardized setjmp / longjmp functions, they weren't superior enough to not be dead code in the monorepo. If you use these APIs, please file an issue and they'll be restored. - The .com appending magic has now been removed from APE Loader.
503 lines
19 KiB
C
503 lines
19 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/calls/struct/stat.h"
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#include "libc/fmt/libgen.h"
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#include "libc/fmt/wintime.internal.h"
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#include "libc/intrin/bits.h"
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#include "libc/intrin/safemacros.internal.h"
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#include "libc/log/check.h"
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#include "libc/log/log.h"
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#include "libc/mem/gc.h"
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#include "libc/mem/mem.h"
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#include "libc/nexgen32e/crc32.h"
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#include "libc/nt/struct/filetime.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/map.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/sysv/consts/prot.h"
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#include "libc/x/xasprintf.h"
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#include "libc/x/xiso8601.h"
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#include "libc/zip.internal.h"
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#include "tool/decode/lib/asmcodegen.h"
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#include "tool/decode/lib/disassemblehex.h"
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#include "tool/decode/lib/flagger.h"
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#include "tool/decode/lib/idname.h"
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#include "tool/decode/lib/ntfileflagnames.h"
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#include "tool/decode/lib/titlegen.h"
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#include "tool/decode/lib/zipnames.h"
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/**
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* @fileoverview Zip File Disassembler.
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*/
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static __wur char *FormatDosDate(uint16_t dosdate) {
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return xasprintf("%04u-%02u-%02u", ((dosdate >> 9) & 0b1111111) + 1980,
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(dosdate >> 5) & 0b1111, dosdate & 0b11111);
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}
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static __wur char *FormatDosTime(uint16_t dostime) {
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return xasprintf("%02u:%02u:%02u", (dostime >> 11) & 0b11111,
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(dostime >> 5) & 0b111111, (dostime << 1) & 0b111110);
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}
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void AdvancePosition(uint8_t *map, size_t *pos, size_t off) {
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if (off > *pos) {
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printf("\n/\t<%s>\n", "LIMBO");
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disassemblehex(&map[*pos], off - *pos, stdout);
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printf("/\t</%s>\n", "LIMBO");
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}
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*pos = off;
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}
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void ShowGeneralFlag(uint16_t generalflag) {
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puts("\
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/ ┌─utf8\n\
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/ │ ┌─strong encryption\n\
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/ │ │┌─compressed patch data\n\
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/ │ ││ ┌─crc and size go after file content\n\
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/ │ ││ │┌─{normal,max,fast,superfast}\n\
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/ │ ││ ││ ┌─encrypted\n\
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/ rrrr│uuuu││r│├┐│");
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show(".short", format(b1, "0b%016b", generalflag), "generalflag");
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}
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void ShowTimestamp(uint16_t time, uint16_t date) {
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show(".short", format(b1, "%#04hx", time),
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_gc(xasprintf("%s (%s)", "lastmodifiedtime", _gc(FormatDosTime(time)))));
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show(".short", format(b1, "%#04hx", date),
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_gc(xasprintf("%s (%s)", "lastmodifieddate", _gc(FormatDosDate(date)))));
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}
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void ShowCompressionMethod(uint16_t compressmethod) {
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show(".short",
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firstnonnull(findnamebyid(kZipCompressionNames, compressmethod),
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format(b1, "%hu", compressmethod)),
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"compressionmethod");
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}
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void ShowNtfs(uint8_t *ntfs, size_t n) {
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struct timespec mtime, atime, ctime;
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mtime = WindowsTimeToTimeSpec(READ64LE(ntfs + 8));
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atime = WindowsTimeToTimeSpec(READ64LE(ntfs + 16));
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ctime = WindowsTimeToTimeSpec(READ64LE(ntfs + 24));
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show(".long", _gc(xasprintf("%d", READ32LE(ntfs))), "ntfs reserved");
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show(".short", _gc(xasprintf("0x%04x", READ16LE(ntfs + 4))),
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"ntfs attribute tag value #1");
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show(".short", _gc(xasprintf("%hu", READ16LE(ntfs + 6))),
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"ntfs attribute tag size");
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show(".quad", _gc(xasprintf("%lu", READ64LE(ntfs + 8))),
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_gc(xasprintf("%s (%s)", "ntfs last modified time",
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_gc(xiso8601(&mtime)))));
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show(".quad", _gc(xasprintf("%lu", READ64LE(ntfs + 16))),
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_gc(xasprintf("%s (%s)", "ntfs last access time",
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_gc(xiso8601(&atime)))));
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show(".quad", _gc(xasprintf("%lu", READ64LE(ntfs + 24))),
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_gc(xasprintf("%s (%s)", "ntfs creation time", _gc(xiso8601(&ctime)))));
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}
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void ShowExtendedTimestamp(uint8_t *p, size_t n, bool islocal) {
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int flag;
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if (n) {
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--n;
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flag = *p++;
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show(".byte", _gc(xasprintf("0b%03hhb", flag)), "fields present in local");
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if ((flag & 1) && n >= 4) {
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show(".long", _gc(xasprintf("%u", READ32LE(p))),
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_gc(xasprintf("%s (%s)", "last modified",
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_gc(xiso8601(&(struct timespec){READ32LE(p)})))));
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p += 4;
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n -= 4;
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}
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flag >>= 1;
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if (islocal) {
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if ((flag & 1) && n >= 4) {
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show(".long", _gc(xasprintf("%u", READ32LE(p))),
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_gc(xasprintf("%s (%s)", "access time",
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_gc(xiso8601(&(struct timespec){READ32LE(p)})))));
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p += 4;
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n -= 4;
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}
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flag >>= 1;
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if ((flag & 1) && n >= 4) {
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show(".long", _gc(xasprintf("%u", READ32LE(p))),
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_gc(xasprintf("%s (%s)", "creation time",
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_gc(xiso8601(&(struct timespec){READ32LE(p)})))));
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p += 4;
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n -= 4;
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}
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}
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}
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}
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void ShowZip64(uint8_t *p, size_t n, bool islocal) {
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if (n >= 8) {
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show(".quad", _gc(xasprintf("%lu", READ64LE(p))),
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_gc(xasprintf("uncompressed size (%,ld)", READ64LE(p))));
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}
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if (n >= 16) {
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show(".quad", _gc(xasprintf("%lu", READ64LE(p + 8))),
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_gc(xasprintf("compressed size (%,ld)", READ64LE(p + 8))));
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}
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if (n >= 24) {
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show(".quad", _gc(xasprintf("%lu", READ64LE(p + 16))),
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_gc(xasprintf("lfile hdr offset (%,ld)", READ64LE(p + 16))));
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}
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if (n >= 28) {
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show(".long", _gc(xasprintf("%u", READ32LE(p + 24))), "disk number");
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}
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}
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void ShowInfoZipNewUnixExtra(uint8_t *p, size_t n, bool islocal) {
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if (p[0] == 1 && p[1] == 4 && p[6] == 4) {
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show(".byte", "1", "version");
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show(".byte", "4", "uid length");
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show(".long", _gc(xasprintf("%u", READ32LE(p + 2))), "uid");
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show(".byte", "4", "gid length");
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show(".long", _gc(xasprintf("%u", READ32LE(p + 7))), "gid");
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} else {
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disassemblehex(p, n, stdout);
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}
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}
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void ShowExtra(uint8_t *extra, bool islocal) {
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switch (ZIP_EXTRA_HEADERID(extra)) {
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case kZipExtraNtfs:
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ShowNtfs(ZIP_EXTRA_CONTENT(extra), ZIP_EXTRA_CONTENTSIZE(extra));
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break;
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case kZipExtraExtendedTimestamp:
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ShowExtendedTimestamp(ZIP_EXTRA_CONTENT(extra),
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ZIP_EXTRA_CONTENTSIZE(extra), islocal);
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break;
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case kZipExtraZip64:
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ShowZip64(ZIP_EXTRA_CONTENT(extra), ZIP_EXTRA_CONTENTSIZE(extra),
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islocal);
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break;
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case kZipExtraInfoZipNewUnixExtra:
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ShowInfoZipNewUnixExtra(ZIP_EXTRA_CONTENT(extra),
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ZIP_EXTRA_CONTENTSIZE(extra), islocal);
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break;
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default:
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disassemblehex(ZIP_EXTRA_CONTENT(extra), ZIP_EXTRA_CONTENTSIZE(extra),
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stdout);
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break;
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}
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}
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void ShowExternalAttributes(uint8_t *cf) {
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uint32_t ea;
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ea = ZIP_CFILE_EXTERNALATTRIBUTES(cf);
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if (ZIP_CFILE_FILEATTRCOMPAT(cf) == kZipOsUnix) {
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show(".short", RecreateFlags(kNtFileFlagNames, ea & 0xffff),
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"dos file flags");
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show(".short", format(b1, "%#o", ea >> 16), "st_mode");
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} else {
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show(".long", RecreateFlags(kNtFileFlagNames, ea), "externalattributes");
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}
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}
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void ShowExtras(uint8_t *extras, uint16_t extrassize, bool islocal) {
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int i;
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bool first;
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uint8_t *p, *pe;
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if (extrassize) {
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first = true;
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for (p = extras, pe = extras + extrassize, i = 0; p < pe;
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p += ZIP_EXTRA_SIZE(p), ++i) {
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show(".short",
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firstnonnull(findnamebyid(kZipExtraNames, ZIP_EXTRA_HEADERID(p)),
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_gc(xasprintf("0x%04hx", ZIP_EXTRA_HEADERID(p)))),
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_gc(xasprintf("%s[%d].%s", "extras", i, "headerid")));
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show(".short", _gc(xasprintf("%df-%df", (i + 2) * 10, (i + 1) * 10)),
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_gc(xasprintf("%s[%d].%s (%hd %s)", "extras", i, "contentsize",
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ZIP_EXTRA_CONTENTSIZE(p), "bytes")));
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if (first) {
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first = false;
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printf("%d:", (i + 1) * 10);
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}
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ShowExtra(p, islocal);
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printf("%d:", (i + 2) * 10);
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}
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}
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putchar('\n');
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}
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void ShowLocalFileHeader(uint8_t *lf, uint16_t idx) {
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printf("\n/\t%s #%hu (%zu %s)\n", "local file", idx + 1,
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ZIP_LFILE_HDRSIZE(lf), "bytes");
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show(".ascii", format(b1, "%`'.*s", 4, lf), "magic");
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show(".byte",
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firstnonnull(findnamebyid(kZipEraNames, ZIP_LFILE_VERSIONNEED(lf)),
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_gc(xasprintf("%d", ZIP_LFILE_VERSIONNEED(lf)))),
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"pkzip version need");
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show(".byte",
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firstnonnull(findnamebyid(kZipOsNames, ZIP_LFILE_OSNEED(lf)),
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_gc(xasprintf("%d", ZIP_LFILE_OSNEED(lf)))),
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"os need");
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ShowGeneralFlag(ZIP_LFILE_GENERALFLAG(lf));
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ShowCompressionMethod(ZIP_LFILE_COMPRESSIONMETHOD(lf));
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ShowTimestamp(ZIP_LFILE_LASTMODIFIEDTIME(lf), ZIP_LFILE_LASTMODIFIEDDATE(lf));
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show(
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".long",
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format(b1, "%#x", ZIP_LFILE_CRC32(lf)), _gc(xasprintf("%s (%#x)", "crc32z", GetZipLfileCompressedSize(lf) /* crc32_z(0, ZIP_LFILE_CONTENT(lf), GetZipLfileCompressedSize(lf)) */)));
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if (ZIP_LFILE_COMPRESSEDSIZE(lf) == 0xFFFFFFFF) {
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show(".long", "0xFFFFFFFF", "compressedsize (zip64)");
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} else {
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show(".long", "3f-2f",
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format(b1, "%s (%u %s)", "compressedsize",
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ZIP_LFILE_COMPRESSEDSIZE(lf), "bytes"));
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}
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show(".long",
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ZIP_LFILE_UNCOMPRESSEDSIZE(lf) == 0xFFFFFFFF
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? "0xFFFFFFFF"
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: format(b1, "%u", ZIP_LFILE_UNCOMPRESSEDSIZE(lf)),
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"uncompressedsize");
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show(".short", "1f-0f",
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format(b1, "%s (%hu %s)", "namesize", ZIP_LFILE_NAMESIZE(lf), "bytes"));
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show(
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".short", "2f-1f",
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format(b1, "%s (%hu %s)", "extrasize", ZIP_LFILE_EXTRASIZE(lf), "bytes"));
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printf("0:");
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show(".ascii",
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format(b1, "%`'s",
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_gc(strndup(ZIP_LFILE_NAME(lf), ZIP_LFILE_NAMESIZE(lf)))),
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"name");
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printf("1:");
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ShowExtras(ZIP_LFILE_EXTRA(lf), ZIP_LFILE_EXTRASIZE(lf), true);
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printf("2:");
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/* disassemblehex(ZIP_LFILE_CONTENT(lf), ZIP_LFILE_COMPRESSEDSIZE(lf),
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* stdout); */
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printf("3:\n");
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}
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void ShowCentralFileHeader(uint8_t *cf) {
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printf("\n/\t%s (%zu %s)\n", "central directory file header",
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ZIP_CFILE_HDRSIZE(cf), "bytes");
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show(".ascii", format(b1, "%`'.*s", 4, cf), "magic");
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show(".byte", _gc(xasprintf("%d", ZIP_CFILE_VERSIONMADE(cf))),
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"zip version made");
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show(".byte",
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firstnonnull(findnamebyid(kZipOsNames, ZIP_CFILE_FILEATTRCOMPAT(cf)),
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_gc(xasprintf("%d", ZIP_CFILE_FILEATTRCOMPAT(cf)))),
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"file attr compat");
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show(".byte",
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firstnonnull(findnamebyid(kZipEraNames, ZIP_CFILE_VERSIONNEED(cf)),
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_gc(xasprintf("%d", ZIP_CFILE_VERSIONNEED(cf)))),
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"pkzip version need");
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show(".byte",
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firstnonnull(findnamebyid(kZipOsNames, ZIP_CFILE_OSNEED(cf)),
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_gc(xasprintf("%d", ZIP_CFILE_OSNEED(cf)))),
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"os need");
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ShowGeneralFlag(ZIP_CFILE_GENERALFLAG(cf));
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ShowCompressionMethod(ZIP_CFILE_COMPRESSIONMETHOD(cf));
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ShowTimestamp(ZIP_CFILE_LASTMODIFIEDTIME(cf), ZIP_CFILE_LASTMODIFIEDDATE(cf));
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show(".long", format(b1, "%#x", ZIP_CFILE_CRC32(cf)), "crc32z");
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if (ZIP_CFILE_COMPRESSEDSIZE(cf) == 0xFFFFFFFF) {
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show(".long", "0xFFFFFFFF", "compressedsize (zip64)");
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} else {
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show(".long", format(b1, "%u", ZIP_CFILE_COMPRESSEDSIZE(cf)),
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"compressedsize");
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}
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if (ZIP_CFILE_UNCOMPRESSEDSIZE(cf) == 0xFFFFFFFF) {
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show(".long", "0xFFFFFFFF", "compressedsize (zip64)");
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} else {
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show(".long", format(b1, "%u", ZIP_CFILE_UNCOMPRESSEDSIZE(cf)),
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"uncompressedsize");
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}
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show(".short", "1f-0f",
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format(b1, "%s (%hu %s)", "namesize", ZIP_CFILE_NAMESIZE(cf), "bytes"));
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show(
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".short", "2f-1f",
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format(b1, "%s (%hu %s)", "extrasize", ZIP_CFILE_EXTRASIZE(cf), "bytes"));
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show(".short", "3f-2f",
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format(b1, "%s (%hu %s)", "commentsize", ZIP_CFILE_COMMENTSIZE(cf),
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"bytes"));
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show(".short", format(b1, "%hu", ZIP_CFILE_DISK(cf)), "disk");
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show(".short",
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RecreateFlags(kZipIattrNames, ZIP_CFILE_INTERNALATTRIBUTES(cf) & 1),
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"internalattributes");
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ShowExternalAttributes(cf);
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if (ZIP_CFILE_OFFSET(cf) == 0xFFFFFFFF) {
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show(".long", "0xFFFFFFFF", "lfile hdr offset (zip64)");
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} else {
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show(".long", format(b1, "%u", ZIP_CFILE_OFFSET(cf)), "lfile hdr offset");
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}
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printf("0:");
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show(".ascii",
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format(b1, "%`'s",
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_gc(strndup(ZIP_CFILE_NAME(cf), ZIP_CFILE_NAMESIZE(cf)))),
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"name");
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printf("1:");
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ShowExtras(ZIP_CFILE_EXTRA(cf), ZIP_CFILE_EXTRASIZE(cf), false);
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printf("2:");
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show(".ascii",
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format(b1, "%`'.*s", ZIP_CFILE_COMMENTSIZE(cf), ZIP_CFILE_COMMENT(cf)),
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"comment");
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printf("3:\n");
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}
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void ShowCentralDirHeader32(uint8_t *cd) {
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printf("\n/\t%s (%zu %s)\n", "end of central directory header",
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ZIP_CDIR_HDRSIZE(cd), "bytes");
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show(".ascii", format(b1, "%`'.*s", 4, cd), "magic");
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show(".short", format(b1, "%hd", ZIP_CDIR_DISK(cd)), "disk");
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show(".short", format(b1, "%hd", ZIP_CDIR_STARTINGDISK(cd)), "startingdisk");
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show(".short", format(b1, "%hu", ZIP_CDIR_RECORDSONDISK(cd)),
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"recordsondisk");
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show(".short", format(b1, "%hu", ZIP_CDIR_RECORDS(cd)), "records");
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show(".long", format(b1, "%u", ZIP_CDIR_SIZE(cd)), "size");
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show(".long", format(b1, "%u", ZIP_CDIR_OFFSET(cd)), "cfile hdrs offset");
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show(".short", "1f-0f",
|
||
format(b1, "%s (%hu %s)", "commentsize", ZIP_CDIR_COMMENTSIZE(cd),
|
||
"bytes"));
|
||
printf("0:");
|
||
disassemblehex(ZIP_CDIR_COMMENT(cd), ZIP_CDIR_COMMENTSIZE(cd), stdout);
|
||
printf("1:\n");
|
||
}
|
||
|
||
void ShowCentralDirHeader64(uint8_t *cd) {
|
||
printf("\n/\t%s (%zu %s)\n", "zip64 end of central directory header",
|
||
ZIP_CDIR64_HDRSIZE(cd), "bytes");
|
||
show(".ascii", format(b1, "%`'.*s", 4, cd), "magic");
|
||
show(".quad", format(b1, "%lu", ZIP_CDIR64_HDRSIZE(cd) - 12), "hdr size");
|
||
show(".short", format(b1, "%hd", ZIP_CDIR64_VERSIONMADE(cd)), "version made");
|
||
show(".short", format(b1, "%hd", ZIP_CDIR64_VERSIONNEED(cd)), "version need");
|
||
show(".long", format(b1, "%d", ZIP_CDIR64_DISK(cd)), "disk");
|
||
show(".long", format(b1, "%d", ZIP_CDIR64_STARTINGDISK(cd)), "startingdisk");
|
||
show(".quad", format(b1, "%lu", ZIP_CDIR64_RECORDSONDISK(cd)),
|
||
"recordsondisk");
|
||
show(".quad", format(b1, "%lu", ZIP_CDIR64_RECORDS(cd)), "records");
|
||
show(".quad", format(b1, "%lu", ZIP_CDIR64_SIZE(cd)), "cdir size");
|
||
show(".quad", format(b1, "%lu", ZIP_CDIR64_OFFSET(cd)), "cdir offset");
|
||
printf("0:");
|
||
disassemblehex(ZIP_CDIR64_COMMENT(cd), ZIP_CDIR64_COMMENTSIZE(cd), stdout);
|
||
printf("1:\n");
|
||
cd += ZIP_CDIR64_HDRSIZE(cd);
|
||
printf("\n/\t%s (%zu %s)\n", "zip64 end of central directory locator",
|
||
kZipCdir64LocatorSize, "bytes");
|
||
show(".ascii", format(b1, "%`'.*s", 4, cd), "magic");
|
||
show(".long", format(b1, "%d", READ32LE(cd + 4)), "startingdisk");
|
||
show(".quad", format(b1, "%lu", READ64LE(cd + 4 + 4)), "eocd64 offset");
|
||
show(".long", format(b1, "%d", READ32LE(cd + 4 + 4 + 8)), "totaldisks");
|
||
}
|
||
|
||
uint8_t *GetZipCdir32(const uint8_t *p, size_t n) {
|
||
size_t i;
|
||
if (n >= kZipCdirHdrMinSize) {
|
||
i = n - kZipCdirHdrMinSize;
|
||
do {
|
||
if (READ32LE(p + i) == kZipCdirHdrMagic &&
|
||
IsZipEocd32(p, n, i) == kZipOk) {
|
||
return (/*unconst*/ uint8_t *)(p + i);
|
||
}
|
||
} while (i--);
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
uint8_t *GetZipCdir64(const uint8_t *p, size_t n) {
|
||
uint64_t i, j;
|
||
if (n >= kZipCdir64LocatorSize) {
|
||
i = n - kZipCdir64LocatorSize;
|
||
do {
|
||
if (READ32LE(p + i) == kZipCdir64LocatorMagic &&
|
||
(j = ZIP_LOCATE64_OFFSET(p + i)) + kZipCdir64HdrMinSize <= n) {
|
||
return (uint8_t *)p + j;
|
||
}
|
||
} while (i--);
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
void DisassembleZip(const char *path, uint8_t *p, size_t n) {
|
||
size_t pos;
|
||
uint16_t i;
|
||
static int records;
|
||
uint8_t *eocd32, *eocd64, *cdir, *cf, *lf;
|
||
eocd32 = GetZipCdir32(p, n);
|
||
eocd64 = GetZipCdir64(p, n);
|
||
CHECK(eocd32 || eocd64);
|
||
pos = 0;
|
||
if (eocd64) {
|
||
records = ZIP_CDIR64_RECORDS(eocd64);
|
||
cdir = p + ZIP_CDIR64_OFFSET(eocd64);
|
||
} else {
|
||
records = ZIP_CDIR_RECORDS(eocd32);
|
||
cdir = p + ZIP_CDIR_OFFSET(eocd32);
|
||
}
|
||
for (i = 0, cf = cdir; i < records; ++i, cf += ZIP_CFILE_HDRSIZE(cf)) {
|
||
lf = p + GetZipCfileOffset(cf);
|
||
CHECK_EQ(kZipLfileHdrMagic, ZIP_LFILE_MAGIC(lf));
|
||
AdvancePosition(p, &pos, lf - p);
|
||
ShowLocalFileHeader(lf, i);
|
||
pos = (lf - p) + ZIP_LFILE_SIZE(lf);
|
||
}
|
||
for (i = 0, cf = cdir; i < records; ++i, cf += ZIP_CFILE_HDRSIZE(cf)) {
|
||
CHECK_EQ(kZipCfileHdrMagic, ZIP_CFILE_MAGIC(cf));
|
||
AdvancePosition(p, &pos, cf - p);
|
||
ShowCentralFileHeader(cf);
|
||
pos = (cf - p) + ZIP_CFILE_HDRSIZE(cf);
|
||
}
|
||
/* TODO(jart): This is absurd. */
|
||
if (eocd32 && eocd64) {
|
||
if (eocd32 < eocd64) {
|
||
ShowCentralDirHeader32(eocd32);
|
||
AdvancePosition(p, &pos, eocd32 - p);
|
||
ShowCentralDirHeader64(eocd64);
|
||
AdvancePosition(p, &pos, eocd64 - p);
|
||
} else {
|
||
/* pos = eocd64 - p + ZIP_CDIR_HDRSIZE(eocd64); */
|
||
/* AdvancePosition(p, &pos, n); */
|
||
ShowCentralDirHeader64(eocd64);
|
||
AdvancePosition(p, &pos, eocd64 - p);
|
||
/* pos = eocd32 - p + ZIP_CDIR_HDRSIZE(eocd32); */
|
||
/* AdvancePosition(p, &pos, n); */
|
||
ShowCentralDirHeader32(eocd32);
|
||
AdvancePosition(p, &pos, eocd32 - p);
|
||
}
|
||
} else if (eocd32) {
|
||
ShowCentralDirHeader32(eocd32);
|
||
AdvancePosition(p, &pos, eocd32 - p);
|
||
} else {
|
||
ShowCentralDirHeader64(eocd64);
|
||
AdvancePosition(p, &pos, eocd64 - p);
|
||
}
|
||
pos = n;
|
||
AdvancePosition(p, &pos, n);
|
||
}
|
||
|
||
int main(int argc, char *argv[]) {
|
||
int fd;
|
||
uint8_t *map;
|
||
struct stat st;
|
||
ShowCrashReports();
|
||
CHECK_EQ(2, argc);
|
||
CHECK_NE(-1, (fd = open(argv[1], O_RDONLY)));
|
||
CHECK_NE(-1, fstat(fd, &st));
|
||
CHECK_GE(st.st_size, kZipCdirHdrMinSize);
|
||
CHECK_NE(MAP_FAILED,
|
||
(map = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0)));
|
||
showtitle("αcτµαlly pδrταblε εxεcµταblε", "tool/decode/zip",
|
||
basename(argv[1]), NULL, &kModelineAsm);
|
||
DisassembleZip(argv[1], map, st.st_size);
|
||
CHECK_NE(-1, munmap(map, st.st_size));
|
||
CHECK_NE(-1, close(fd));
|
||
return 0;
|
||
}
|