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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 "base/basictypes.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.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.";
const char* const kContentSettingsTypeNames[] = {
"cookies",
"images",
"javascript",
"plugins",
"popups",
"location",
"notifications",
};
static_assert(arraysize(kContentSettingsTypeNames) <=
CONTENT_SETTINGS_NUM_TYPES,
"kContentSettingsTypeNames has an unexpected number of elements");
const char* const kContentSettingNames[] = {
"default",
"allow",
"block",
"ask",
"session_only",
};
static_assert(arraysize(kContentSettingNames) <=
CONTENT_SETTING_NUM_SETTINGS,
"kContentSettingNames has an unexpected number of elements");
// 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::PARSE_SUCCESS) {
*error = URLPattern::GetParseResultString(result);
return ContentSettingsPattern();
} else {
scoped_ptr<ContentSettingsPattern::BuilderInterface> builder(
ContentSettingsPattern::CreateBuilder(false));
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) {
for (size_t type = 0; type < arraysize(kContentSettingsTypeNames); ++type) {
if (content_type == kContentSettingsTypeNames[type])
return static_cast<ContentSettingsType>(type);
}
return CONTENT_SETTINGS_TYPE_DEFAULT;
}
const char* ContentSettingsTypeToString(ContentSettingsType type) {
size_t index = static_cast<size_t>(type);
DCHECK_LT(index, arraysize(kContentSettingsTypeNames));
return kContentSettingsTypeNames[index];
}
bool StringToContentSetting(const std::string& setting_str,
ContentSetting* setting) {
for (size_t type = 0; type < arraysize(kContentSettingNames); ++type) {
if (setting_str == kContentSettingNames[type]) {
*setting = static_cast<ContentSetting>(type);
return true;
}
}
return false;
}
const char* ContentSettingToString(ContentSetting setting) {
size_t index = static_cast<size_t>(setting);
DCHECK_LT(index, arraysize(kContentSettingNames));
return kContentSettingNames[index];
}
} // namespace content_settings_helpers
} // namespace extensions
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