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// Copyright (c) 2012 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.
#include "chrome/browser/extensions/api/content_settings/content_settings_helpers.h"
#include <memory>
#include "base/logging.h"
#include "components/content_settings/core/browser/website_settings_info.h"
#include "components/content_settings/core/browser/website_settings_registry.h"
#include "content/public/common/url_constants.h"
#include "extensions/common/url_pattern.h"
namespace {
const char kNoPathWildcardsError[] =
"Path wildcards in file URL patterns are not allowed.";
const char kNoPathsError[] = "Specific paths are not allowed.";
const char kInvalidPatternError[] = "The pattern \"*\" is invalid.";
// TODO(bauerb): Move this someplace where it can be reused.
std::string GetDefaultPort(const std::string& scheme) {
if (scheme == url::kHttpScheme)
return "80";
if (scheme == url::kHttpsScheme)
return "443";
NOTREACHED();
return std::string();
}
} // namespace
namespace extensions {
namespace content_settings_helpers {
ContentSettingsPattern ParseExtensionPattern(const std::string& pattern_str,
std::string* error) {
const int kAllowedSchemes =
URLPattern::SCHEME_HTTP | URLPattern::SCHEME_HTTPS |
URLPattern::SCHEME_FILE;
URLPattern url_pattern(kAllowedSchemes);
URLPattern::ParseResult result = url_pattern.Parse(pattern_str);
if (result != URLPattern::ParseResult::kSuccess) {
*error = URLPattern::GetParseResultString(result);
return ContentSettingsPattern();
} else {
std::unique_ptr<ContentSettingsPattern::BuilderInterface> builder =
ContentSettingsPattern::CreateBuilder();
builder->WithHost(url_pattern.host());
if (url_pattern.match_subdomains())
builder->WithDomainWildcard();
std::string scheme = url_pattern.scheme();
if (scheme == "*")
builder->WithSchemeWildcard();
else
builder->WithScheme(scheme);
std::string port = url_pattern.port();
if (port.empty() && scheme != "file") {
if (scheme == "*")
port = "*";
else
port = GetDefaultPort(scheme);
}
if (port == "*")
builder->WithPortWildcard();
else
builder->WithPort(port);
std::string path = url_pattern.path();
if (scheme == "file") {
// For file URLs we allow only exact path matches.
if (path.find_first_of("*?") != std::string::npos) {
*error = kNoPathWildcardsError;
return ContentSettingsPattern();
} else {
builder->WithPath(path);
}
} else if (path != "/*") {
// For other URLs we allow only paths which match everything.
*error = kNoPathsError;
return ContentSettingsPattern();
}
ContentSettingsPattern pattern = builder->Build();
if (!pattern.IsValid())
*error = kInvalidPatternError;
return pattern;
}
}
ContentSettingsType StringToContentSettingsType(
const std::string& content_type) {
const content_settings::WebsiteSettingsInfo* info =
content_settings::WebsiteSettingsRegistry::GetInstance()->GetByName(
content_type);
if (info)
return info->type();
return CONTENT_SETTINGS_TYPE_DEFAULT;
}
std::string ContentSettingsTypeToString(ContentSettingsType type) {
return content_settings::WebsiteSettingsRegistry::GetInstance()
->Get(type)
->name();
}
} // namespace content_settings_helpers
} // namespace extensions
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