83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
|
/*
|
||
|
|
* Copyright 2008-2019 Max Kellermann <max.kellermann@gmail.com>
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
*
|
||
|
|
* - Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
*
|
||
|
|
* - 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.
|
||
|
|
*
|
||
|
|
* 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
|
||
|
|
* FOUNDATION 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "UriRelative.hxx"
|
||
|
|
|
||
|
|
#include <assert.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
bool
|
||
|
|
uri_is_child(const char *parent, const char *child) noexcept
|
||
|
|
{
|
||
|
|
#if !CLANG_CHECK_VERSION(3,6)
|
||
|
|
/* disabled on clang due to -Wtautological-pointer-compare */
|
||
|
|
assert(parent != nullptr);
|
||
|
|
assert(child != nullptr);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
const size_t parent_length = strlen(parent);
|
||
|
|
return memcmp(parent, child, parent_length) == 0 &&
|
||
|
|
child[parent_length] == '/';
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
bool
|
||
|
|
uri_is_child_or_same(const char *parent, const char *child) noexcept
|
||
|
|
{
|
||
|
|
return strcmp(parent, child) == 0 || uri_is_child(parent, child);
|
||
|
|
}
|
||
|
|
|
||
|
|
std::string
|
||
|
|
uri_apply_base(const std::string &uri, const std::string &base) noexcept
|
||
|
|
{
|
||
|
|
if (uri.front() == '/') {
|
||
|
|
/* absolute path: replace the whole URI path in base */
|
||
|
|
|
||
|
|
auto i = base.find("://");
|
||
|
|
if (i == base.npos)
|
||
|
|
/* no scheme: override base completely */
|
||
|
|
return uri;
|
||
|
|
|
||
|
|
/* find the first slash after the host part */
|
||
|
|
i = base.find('/', i + 3);
|
||
|
|
if (i == base.npos)
|
||
|
|
/* there's no URI path - simply append uri */
|
||
|
|
i = base.length();
|
||
|
|
|
||
|
|
return base.substr(0, i) + uri;
|
||
|
|
}
|
||
|
|
|
||
|
|
std::string out(base);
|
||
|
|
if (out.back() != '/')
|
||
|
|
out.push_back('/');
|
||
|
|
|
||
|
|
out += uri;
|
||
|
|
return out;
|
||
|
|
}
|