mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-03-03 23:48:21 +00:00
bf03b2e64c
The most exciting improvement is dynamic pages will soon be able to use the executable itself as an object store. it required a heroic technique for overcoming ETXTBSY restrictions which lets us open the executable in read/write mode, which means (1) wa can restore the APE header, and (2) we can potentially containerize redbean extension code so that modules you download for your redbean online will only impact your redbean. Here's a list of breaking changes to redbean: - Remove /tool/net/ prefix from magic ZIP paths - GetHeader() now returns NIL if header is absent Here's a list of fixes and enhancements to redbean: - Support 64-bit ZIP archives - Record User-Agent header in logs - Add twelve error handlers to accept() - Display octal st_mode on listing page - Show ZIP file comments on listing page - Restore APE MZ header on redbean startup - Track request count on redbean index page - Report server uptime on redbean index page - Don't bind server socket using SO_REUSEPORT - Fix #151 where Lua LoadAsset() could free twice - Report rusage accounting when workers exit w/ -vv - Use ZIP iattr field as text/plain vs. binary hint - Add ParseUrl() API for parsing things like a.href - Add ParseParams() API for parsing HTTP POST bodies - Add IsAcceptablePath() API for checking dots, etc. - Add IsValidHttpToken() API for validating sane ASCII - Add IsAcceptableHostPort() for validating HOST[:PORT] - Send 400 response to HTTP/1.1 requests without a Host - Send 403 response if ZIP or file isn't other readable - Add virtual hosting that tries prepending Host to path - Route requests based on Host in Request-URI if present - Host routing will attempt to remove or add the www. prefix - Sign-extend UNIX timestamps and don't adjust FileTime zone Here's some of the improvements made to Cosmopolitan Libc: - Fix ape.S indentation - Improve consts.sh magnums - Write pretty good URL parser - Improve rusage accounting apis - Bring mremap() closer to working - Added ZIP APIs which will change - Check for overflow in reallocarray() - Remove overly fancy linkage in strerror() - Fix GDB attach on crash w/ OpenBSD msyscall() - Make sigqueue() portable to most UNIX distros - Make integer serialization macros more elegant - Bring back 34x tprecode8to16() performance boost - Make malloc() more resilient to absurdly large sizes
498 lines
19 KiB
C
498 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/bits/bits.h"
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#include "libc/bits/safemacros.internal.h"
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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/conv.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/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/runtime/gc.internal.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/x.h"
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#include "libc/zip.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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nodiscard 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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nodiscard 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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CHECK_GE(off, *pos);
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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 = FileTimeToTimeSpec(
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(struct NtFileTime){READ32LE(ntfs + 8), READ32LE(ntfs + 12)});
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atime = FileTimeToTimeSpec(
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(struct NtFileTime){READ32LE(ntfs + 16), READ32LE(ntfs + 20)});
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ctime = FileTimeToTimeSpec(
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(struct NtFileTime){READ32LE(ntfs + 24), READ32LE(ntfs + 28)});
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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", 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");
|
||
show(".short", format(b1, "%hu", ZIP_CDIR_RECORDS(cd)), "records");
|
||
show(".long", format(b1, "%u", ZIP_CDIR_SIZE(cd)), "size");
|
||
show(".long", format(b1, "%u", ZIP_CDIR_OFFSET(cd)), "cfile hdrs offset");
|
||
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");
|
||
}
|
||
|
||
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 && IsZipCdir32(p, n, i)) {
|
||
return (/*unconst*/ uint8_t *)(p + i);
|
||
}
|
||
} while (i--);
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
uint8_t *GetZipCdir64(const uint8_t *p, size_t n) {
|
||
size_t i;
|
||
if (n >= kZipCdir64HdrMinSize) {
|
||
i = n - kZipCdir64HdrMinSize;
|
||
do {
|
||
if (READ32LE(p + i) == kZipCdir64HdrMagic && IsZipCdir64(p, n, i)) {
|
||
return (/*unconst*/ uint8_t *)(p + i);
|
||
}
|
||
} 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, *q;
|
||
if (endswith(path, ".com.dbg") && (q = memmem(p, n, "MZqFpD", 6))) {
|
||
n -= q - p;
|
||
p += q - p;
|
||
}
|
||
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);
|
||
}
|
||
if (eocd32 && eocd64) {
|
||
if (eocd32 < eocd64) {
|
||
ShowCentralDirHeader32(eocd32);
|
||
AdvancePosition(p, &pos, eocd32 - p);
|
||
ShowCentralDirHeader64(eocd64);
|
||
AdvancePosition(p, &pos, eocd64 - p);
|
||
} else {
|
||
ShowCentralDirHeader64(eocd64);
|
||
AdvancePosition(p, &pos, eocd64 - p);
|
||
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);
|
||
}
|
||
if (!eocd64 || eocd32 > eocd64) {
|
||
pos = eocd32 - p + ZIP_CDIR_HDRSIZE(eocd32);
|
||
} else {
|
||
pos = eocd64 - p + ZIP_CDIR_HDRSIZE(eocd64);
|
||
}
|
||
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;
|
||
}
|