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e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
52 lines
2.9 KiB
C
52 lines
2.9 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et 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/str/slice.h"
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#include "net/https/https.h"
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bool CertHasHost(const mbedtls_x509_crt *cert, const void *s, size_t n) {
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const mbedtls_x509_sequence *cur;
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for (cur = &cert->subject_alt_names; cur; cur = cur->next) {
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if ((cur->buf.tag & MBEDTLS_ASN1_TAG_VALUE_MASK) ==
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MBEDTLS_X509_SAN_DNS_NAME) {
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if (cur->buf.len > 2 && cur->buf.p[0] == '*' && cur->buf.p[1] == '.') {
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// handle subject alt name like *.foo.com
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// - match examples
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// - bar.foo.com
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// - zoo.foo.com
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// - does not match
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// - foo.com
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// - zoo.bar.foo.com
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if (n > cur->buf.len - 1 &&
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SlicesEqualCase((char *)s + n - (cur->buf.len - 1),
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cur->buf.len - 1, cur->buf.p + 1,
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cur->buf.len - 1) &&
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!memchr(s, '.', n - (cur->buf.len - 1))) {
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return true;
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}
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} else {
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// handle subject alt name like foo.com
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if (SlicesEqualCase(s, n, cur->buf.p, cur->buf.len)) {
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return true;
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}
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}
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}
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}
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return false;
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}
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