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Use DNS implementation from Musl Libc

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Now that our socket system call polyfills are good enough to support
Musl's DNS library we should be using that rather than the barebones
domain name system implementation we rolled on our own. There's many
benefits to making this change. So many, that I myself wouldn't feel
qualified to enumerate them all. The Musl DNS code had to be changed
in order to support Windows of course, which looks very solid so far
This commit is contained in:
Justine Tunney 2023-12-28 22:58:17 -08:00
parent 1a28e35c62
commit 43fe5956ad
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GPG key ID: BE714B4575D6E328
146 changed files with 2646 additions and 7190 deletions
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34
libc/calls/getsystemdirectorypath.c Normal file
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2023 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/nt/systeminfo.h"
#include "libc/str/str.h"
// e.g. GetSystemDirectoryPath(buf, "FOO", size) → "C:\WINDOWS\SYSTEM32\FOO"
textwindows char *GetSystemDirectoryPath(char *buf, const char *path,
size_t size) {
uint32_t syslen = GetSystemDirectoryA(buf, size);
size_t pathlen = strlen(path);
if (syslen && syslen + pathlen + 1 < size) {
if (buf[syslen] == '\\') --syslen;
memcpy(buf + syslen, path, pathlen + 1);
return buf;
} else {
return 0;
}
}