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/*
* uriparser - RFC 3986 URI parsing library
*
* Copyright (C) 2025, Sebastian Pipping <sebastian@pipping.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* What encodings are enabled? */
#include <uriparser/UriDefsConfig.h>
#if (!defined(URI_PASS_ANSI) && !defined(URI_PASS_UNICODE))
/* Include SELF twice */
# ifdef URI_ENABLE_ANSI
# define URI_PASS_ANSI 1
# include "UriSetHostIp6.c"
# undef URI_PASS_ANSI
# endif
# ifdef URI_ENABLE_UNICODE
# define URI_PASS_UNICODE 1
# include "UriSetHostIp6.c"
# undef URI_PASS_UNICODE
# endif
#else
# ifdef URI_PASS_ANSI
# include <uriparser/UriDefsAnsi.h>
# else
# include <uriparser/UriDefsUnicode.h>
# include <wchar.h>
# endif
# ifndef URI_DOXYGEN
# include <uriparser/Uri.h>
# include "UriMemory.h"
# include "UriSetHostBase.h"
# include "UriSetHostCommon.h"
# endif
# include <assert.h>
# include <string.h> /* for memcpy */
# define URI_MAX_IP6_LEN \
(8 * 4 + 7 * 1) /* i.e. 8 full quads plus 7 colon separators \
*/
int URI_FUNC(ParseIpSixAddressMm)(UriIp6 * output, const URI_CHAR * first,
const URI_CHAR * afterLast, UriMemoryManager * memory) {
/* NOTE: output is allowed to be NULL */
if ((first == NULL) || (afterLast == NULL)) {
return URI_ERROR_NULL;
}
URI_CHECK_MEMORY_MANAGER(memory); /* may return */
/* Are we dealing with potential IPvFuture input? */
if (first < afterLast) {
switch (first[0]) {
case _UT('v'):
case _UT('V'):
return URI_ERROR_SYNTAX;
default:
break;
}
}
/* Are we dealing with IPv6 input? */
/* Assemble "//[..]" input wrap for upcoming parse as a URI
* NOTE: If the input contains closing "]" on its own, the resulting
* string will not be valid URI syntax, and hence there is
* no risk of false positives from "bracket injection". */
URI_CHAR candidate[3 + URI_MAX_IP6_LEN + 1 + 1] = _UT("//[");
const size_t inputLenChars = (afterLast - first);
/* Detect overflow */
if (inputLenChars > URI_MAX_IP6_LEN) {
return URI_ERROR_SYNTAX;
}
memcpy(candidate + 3, first, inputLenChars * sizeof(URI_CHAR));
memcpy(candidate + 3 + inputLenChars, _UT("]"),
2 * sizeof(URI_CHAR)); /* includes zero terminator */
/* Parse as an RFC 3986 URI */
const size_t candidateLenChars = 3 + inputLenChars + 1;
URI_TYPE(Uri) uri;
const int res = URI_FUNC(ParseSingleUriExMm)(
&uri, candidate, candidate + candidateLenChars, NULL, memory);
assert((res == URI_SUCCESS) || (res == URI_ERROR_SYNTAX)
|| (res == URI_ERROR_MALLOC));
if (res == URI_SUCCESS) {
assert(uri.hostData.ip6 != NULL);
if (output != NULL) {
memcpy(output->data, uri.hostData.ip6->data, sizeof(output->data));
}
URI_FUNC(FreeUriMembersMm)(&uri, memory);
}
return res;
}
int URI_FUNC(ParseIpSixAddress)(UriIp6 * output, const URI_CHAR * first,
const URI_CHAR * afterLast) {
return URI_FUNC(ParseIpSixAddressMm)(output, first, afterLast, NULL);
}
int URI_FUNC(IsWellFormedHostIp6Mm)(const URI_CHAR * first, const URI_CHAR * afterLast,
UriMemoryManager * memory) {
return URI_FUNC(ParseIpSixAddressMm)(NULL, first, afterLast, memory);
}
int URI_FUNC(IsWellFormedHostIp6)(const URI_CHAR * first, const URI_CHAR * afterLast) {
return URI_FUNC(IsWellFormedHostIp6Mm)(first, afterLast, NULL);
}
int URI_FUNC(SetHostIp6Mm)(URI_TYPE(Uri) * uri, const URI_CHAR * first,
const URI_CHAR * afterLast, UriMemoryManager * memory) {
return URI_FUNC(InternalSetHostMm)(uri, URI_HOST_TYPE_IP6, first, afterLast, memory);
}
int URI_FUNC(SetHostIp6)(URI_TYPE(Uri) * uri, const URI_CHAR * first,
const URI_CHAR * afterLast) {
return URI_FUNC(SetHostIp6Mm)(uri, first, afterLast, NULL);
}
#endif
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