blob: d7a48785929e35635e62d96ecf8d4ccbdc320b25 [file] [log] [blame]
// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Functions to canonicalize "standard" URLs, which are ones that have an
// authority section including a host name.
#include "src/lib/url/url_canon.h"
#include "src/lib/url/url_canon_internal.h"
#include "src/lib/url/url_constants.h"
namespace url {
bool CanonicalizeStandardURL(const char* spec, size_t spec_len, const Parsed& parsed,
CharsetConverter* query_converter, CanonOutput* output,
Parsed* new_parsed) {
URLComponentSource source(spec);
// Scheme: this will append the colon.
bool success = CanonicalizeScheme(source.scheme, parsed.scheme, output, &new_parsed->scheme);
// Authority (username, password, host, port)
bool have_authority;
if (parsed.username.is_valid() || parsed.password.is_valid() || ||
parsed.port.is_valid()) {
have_authority = true;
// Only write the authority separators when we have a scheme.
if (parsed.scheme.is_valid()) {
// User info: the canonicalizer will handle the : and @.
success &=
CanonicalizeUserInfo(source.username, parsed.username, source.password, parsed.password,
output, &new_parsed->username, &new_parsed->password);
success &= CanonicalizeHost(,, output, &new_parsed->host);
// Host must not be empty for standard URLs.
if (
success = false;
// Port: the port canonicalizer will handle the colon.
int default_port =
DefaultPortForScheme(&output->data()[new_parsed->scheme.begin], new_parsed->scheme.len());
success &= CanonicalizePort(source.port, parsed.port, default_port, output, &new_parsed->port);
} else {
// No authority, clear the components.
have_authority = false;
success = false; // Standard URLs must have an authority.
// Path
if (parsed.path.is_valid()) {
success &= CanonicalizePath(source.path, parsed.path, output, &new_parsed->path);
} else if (have_authority || parsed.query.is_valid() || parsed.ref.is_valid()) {
// When we have an empty path, make up a path when we have an authority
// or something following the path. The only time we allow an empty
// output path is when there is nothing else.
new_parsed->path = Component(output->length(), 1);
} else {
// No path at all
// Query
CanonicalizeQuery(source.query, parsed.query, query_converter, output, &new_parsed->query);
// Ref: ignore failure for this, since the page can probably still be loaded.
CanonicalizeRef(source.ref, parsed.ref, output, &new_parsed->ref);
return success;
// Returns the default port for the given canonical scheme, or PORT_UNSPECIFIED
// if the scheme is unknown.
int DefaultPortForScheme(const char* scheme, size_t scheme_len) {
int default_port = PORT_UNSPECIFIED;
switch (scheme_len) {
case 4:
if (!strncmp(scheme, kHttpScheme, scheme_len))
default_port = 80;
case 5:
if (!strncmp(scheme, kHttpsScheme, scheme_len))
default_port = 443;
case 3:
if (!strncmp(scheme, kFtpScheme, scheme_len))
default_port = 21;
else if (!strncmp(scheme, kWssScheme, scheme_len))
default_port = 443;
case 6:
if (!strncmp(scheme, kGopherScheme, scheme_len))
default_port = 70;
case 2:
if (!strncmp(scheme, kWsScheme, scheme_len))
default_port = 80;
return default_port;
} // namespace url