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// Copyright 2014 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 "extensions/common/permissions/socket_permission_data.h"
#include <cstdlib>
#include <sstream>
#include <vector>
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "extensions/common/permissions/api_permission.h"
#include "extensions/common/permissions/socket_permission.h"
#include "url/url_canon.h"
namespace {
using content::SocketPermissionRequest;
using extensions::SocketPermissionData;
const char kColon = ':';
const char kInvalid[] = "invalid";
const char kTCPConnect[] = "tcp-connect";
const char kTCPListen[] = "tcp-listen";
const char kUDPBind[] = "udp-bind";
const char kUDPSendTo[] = "udp-send-to";
const char kUDPMulticastMembership[] = "udp-multicast-membership";
const char kResolveHost[] = "resolve-host";
const char kResolveProxy[] = "resolve-proxy";
const char kNetworkState[] = "network-state";
SocketPermissionRequest::OperationType StringToType(const std::string& s) {
if (s == kTCPConnect)
return SocketPermissionRequest::TCP_CONNECT;
if (s == kTCPListen)
return SocketPermissionRequest::TCP_LISTEN;
if (s == kUDPBind)
return SocketPermissionRequest::UDP_BIND;
if (s == kUDPSendTo)
return SocketPermissionRequest::UDP_SEND_TO;
if (s == kUDPMulticastMembership)
return SocketPermissionRequest::UDP_MULTICAST_MEMBERSHIP;
if (s == kResolveHost)
return SocketPermissionRequest::RESOLVE_HOST;
if (s == kResolveProxy)
return SocketPermissionRequest::RESOLVE_PROXY;
if (s == kNetworkState)
return SocketPermissionRequest::NETWORK_STATE;
return SocketPermissionRequest::NONE;
}
const char* TypeToString(SocketPermissionRequest::OperationType type) {
switch (type) {
case SocketPermissionRequest::TCP_CONNECT:
return kTCPConnect;
case SocketPermissionRequest::TCP_LISTEN:
return kTCPListen;
case SocketPermissionRequest::UDP_BIND:
return kUDPBind;
case SocketPermissionRequest::UDP_SEND_TO:
return kUDPSendTo;
case SocketPermissionRequest::UDP_MULTICAST_MEMBERSHIP:
return kUDPMulticastMembership;
case SocketPermissionRequest::RESOLVE_HOST:
return kResolveHost;
case SocketPermissionRequest::RESOLVE_PROXY:
return kResolveProxy;
case SocketPermissionRequest::NETWORK_STATE:
return kNetworkState;
default:
return kInvalid;
}
}
} // namespace
namespace extensions {
SocketPermissionData::SocketPermissionData() {}
SocketPermissionData::~SocketPermissionData() {}
bool SocketPermissionData::operator<(const SocketPermissionData& rhs) const {
return entry_ < rhs.entry_;
}
bool SocketPermissionData::operator==(const SocketPermissionData& rhs) const {
return entry_ == rhs.entry_;
}
bool SocketPermissionData::Check(const APIPermission::CheckParam* param) const {
if (!param)
return false;
const SocketPermission::CheckParam& specific_param =
*static_cast<const SocketPermission::CheckParam*>(param);
const SocketPermissionRequest& request = specific_param.request;
return entry_.Check(request);
}
scoped_ptr<base::Value> SocketPermissionData::ToValue() const {
return scoped_ptr<base::Value>(new base::StringValue(GetAsString()));
}
bool SocketPermissionData::FromValue(const base::Value* value) {
std::string spec;
if (!value->GetAsString(&spec))
return false;
return Parse(spec);
}
SocketPermissionEntry& SocketPermissionData::entry() {
// Clear the spec because the caller could mutate |this|.
spec_.clear();
return entry_;
}
// TODO(reillyg): Rewrite this method to support IPv6.
bool SocketPermissionData::Parse(const std::string& permission) {
Reset();
std::vector<std::string> tokens =
base::SplitString(permission, std::string(1, kColon),
base::KEEP_WHITESPACE, base::SPLIT_WANT_ALL);
if (tokens.empty())
return false;
SocketPermissionRequest::OperationType type = StringToType(tokens[0]);
if (type == SocketPermissionRequest::NONE)
return false;
tokens.erase(tokens.begin());
return SocketPermissionEntry::ParseHostPattern(type, tokens, &entry_);
}
const std::string& SocketPermissionData::GetAsString() const {
if (!spec_.empty())
return spec_;
spec_.reserve(64);
spec_.append(TypeToString(entry_.pattern().type));
std::string pattern = entry_.GetHostPatternAsString();
if (!pattern.empty()) {
spec_.append(1, kColon).append(pattern);
}
return spec_;
}
void SocketPermissionData::Reset() {
entry_ = SocketPermissionEntry();
spec_.clear();
}
} // namespace extensions
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