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// Copyright 2012, Google Inc.
// All rights reserved.
//
// 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.
// * Neither the name of Google Inc. 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
// OWNER 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.
// Functions for canonicalizing "filesystem:file:" URLs.
#include "url_canon.h"
#include "url_canon_internal.h"
#include "url_file.h"
#include "url_parse_internal.h"
#include "url_util.h"
#include "url_util_internal.h"
namespace url_canon {
namespace {
// We use the URLComponentSource for the outer URL, as it can have replacements,
// whereas the inner_url can't, so it uses spec.
template<typename CHAR, typename UCHAR>
bool DoCanonicalizeFileSystemURL(const CHAR* spec,
const URLComponentSource<CHAR>& source,
const url_parse::Parsed& parsed,
CharsetConverter* charset_converter,
CanonOutput* output,
url_parse::Parsed* new_parsed) {
// filesystem only uses {scheme, path, query, ref} -- clear the rest.
new_parsed->username = url_parse::Component();
new_parsed->password = url_parse::Component();
new_parsed->host = url_parse::Component();
new_parsed->port = url_parse::Component();
const url_parse::Parsed* inner_parsed = parsed.inner_parsed();
url_parse::Parsed new_inner_parsed;
// Scheme (known, so we don't bother running it through the more
// complicated scheme canonicalizer).
new_parsed->scheme.begin = output->length();
output->Append("filesystem:", 11);
new_parsed->scheme.len = 10;
if (!parsed.inner_parsed() || !parsed.inner_parsed()->scheme.is_valid())
return false;
bool success = true;
if (url_util::CompareSchemeComponent(spec, inner_parsed->scheme,
url_util::kFileScheme)) {
new_inner_parsed.scheme.begin = output->length();
output->Append("file://", 7);
new_inner_parsed.scheme.len = 4;
success &= CanonicalizePath(spec, inner_parsed->path, output,
&new_inner_parsed.path);
} else if (url_util::IsStandard(spec, inner_parsed->scheme)) {
success =
url_canon::CanonicalizeStandardURL(spec,
parsed.inner_parsed()->Length(),
*parsed.inner_parsed(),
charset_converter, output,
&new_inner_parsed);
} else {
// TODO(ericu): The URL is wrong, but should we try to output more of what
// we were given? Echoing back filesystem:mailto etc. doesn't seem all that
// useful.
return false;
}
// The filesystem type must be more than just a leading slash for validity.
success &= parsed.inner_parsed()->path.len > 1;
success &= CanonicalizePath(source.path, parsed.path, output,
&new_parsed->path);
// Ignore failures for query/ref since the URL can probably still be loaded.
CanonicalizeQuery(source.query, parsed.query, charset_converter,
output, &new_parsed->query);
CanonicalizeRef(source.ref, parsed.ref, output, &new_parsed->ref);
if (success)
new_parsed->set_inner_parsed(new_inner_parsed);
return success;
}
} // namespace
bool CanonicalizeFileSystemURL(const char* spec,
int spec_len,
const url_parse::Parsed& parsed,
CharsetConverter* charset_converter,
CanonOutput* output,
url_parse::Parsed* new_parsed) {
(void)spec_len;
return DoCanonicalizeFileSystemURL<char, unsigned char>(
spec, URLComponentSource<char>(spec), parsed, charset_converter, output,
new_parsed);
}
bool CanonicalizeFileSystemURL(const char16* spec,
int spec_len,
const url_parse::Parsed& parsed,
CharsetConverter* charset_converter,
CanonOutput* output,
url_parse::Parsed* new_parsed) {
(void)spec_len;
return DoCanonicalizeFileSystemURL<char16, char16>(
spec, URLComponentSource<char16>(spec), parsed, charset_converter, output,
new_parsed);
}
bool ReplaceFileSystemURL(const char* base,
const url_parse::Parsed& base_parsed,
const Replacements<char>& replacements,
CharsetConverter* charset_converter,
CanonOutput* output,
url_parse::Parsed* new_parsed) {
URLComponentSource<char> source(base);
url_parse::Parsed parsed(base_parsed);
SetupOverrideComponents(base, replacements, &source, &parsed);
return DoCanonicalizeFileSystemURL<char, unsigned char>(
base, source, parsed, charset_converter, output, new_parsed);
}
bool ReplaceFileSystemURL(const char* base,
const url_parse::Parsed& base_parsed,
const Replacements<char16>& replacements,
CharsetConverter* charset_converter,
CanonOutput* output,
url_parse::Parsed* new_parsed) {
RawCanonOutput<1024> utf8;
URLComponentSource<char> source(base);
url_parse::Parsed parsed(base_parsed);
SetupUTF16OverrideComponents(base, replacements, &utf8, &source, &parsed);
return DoCanonicalizeFileSystemURL<char, unsigned char>(
base, source, parsed, charset_converter, output, new_parsed);
}
} // namespace url_canon
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