mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-06-01 10:12:27 +00:00
ae5d06dc53
- 10.5% reduction of o//depend dependency graph
- 8.8% reduction in latency of make command
- Fix issue with temporary file cleanup
There's a new -w option in compile.com that turns off the recent
Landlock output path workaround for "good commands" which do not
unlink() the output file like GNU tooling does.
Our new GNU Make unveil sandboxing appears to have zero overhead
in the grand scheme of things. Full builds are pretty fast since
the only thing that's actually slowed us down is probably libcxx
make -j16 MODE=rel
RL: took 85,732,063µs wall time
RL: ballooned to 323,612kb in size
RL: needed 828,560,521µs cpu (11% kernel)
RL: caused 39,080,670 page faults (99% memcpy)
RL: 350,073 context switches (72% consensual)
RL: performed 0 reads and 11,494,960 write i/o operations
pledge() and unveil() no longer consider ENOSYS to be an error.
These functions have also been added to Python's cosmo module.
This change also removes some WIN32 APIs and System Five magnums
which we're not using and it's doubtful anyone else would be too
282 lines
11 KiB
C
282 lines
11 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 2021 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/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/runtime/gc.internal.h"
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#include "libc/runtime/runtime.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/zipnames.h"
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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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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 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 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 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 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", 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 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), stdout);
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printf("3:\n");
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}
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void DisassembleZip(const char *path, uint8_t *p, size_t n) {
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size_t i, records;
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uint8_t *eocd, *cdir, *cf, *lf;
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CHECK_NOTNULL((eocd = GetZipCdir(p, n)));
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records = GetZipCdirRecords(eocd);
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cdir = p + GetZipCdirOffset(eocd);
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for (i = 0, cf = cdir; i < records; ++i, cf += ZIP_CFILE_HDRSIZE(cf)) {
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CHECK_EQ(kZipCfileHdrMagic, ZIP_CFILE_MAGIC(cf));
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lf = p + GetZipCfileOffset(cf);
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CHECK_EQ(kZipLfileHdrMagic, ZIP_LFILE_MAGIC(lf));
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ShowLocalFileHeader(lf, i);
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}
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}
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int main(int argc, char *argv[]) {
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int fd;
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uint8_t *map;
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struct stat st;
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ShowCrashReports();
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CHECK_EQ(2, argc);
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CHECK_NE(-1, (fd = open(argv[1], O_RDONLY)));
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CHECK_NE(-1, fstat(fd, &st));
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CHECK_GE(st.st_size, kZipCdirHdrMinSize);
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CHECK_NE(MAP_FAILED,
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(map = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0)));
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DisassembleZip(argv[1], map, st.st_size);
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CHECK_NE(-1, munmap(map, st.st_size));
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CHECK_NE(-1, close(fd));
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return 0;
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}
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