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/*
* libjingle
* Copyright 2012, The Libjingle Authors.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#ifndef TALK_P2P_BASE_TRANSPORTDESCRIPTION_H_
#define TALK_P2P_BASE_TRANSPORTDESCRIPTION_H_
#include <algorithm>
#include <string>
#include <vector>
#include "talk/base/scoped_ptr.h"
#include "talk/base/sslfingerprint.h"
#include "talk/p2p/base/candidate.h"
#include "talk/p2p/base/constants.h"
namespace cricket {
// SEC_ENABLED and SEC_REQUIRED should only be used if the session
// was negotiated over TLS, to protect the inline crypto material
// exchange.
// SEC_DISABLED: No crypto in outgoing offer, ignore any supplied crypto.
// SEC_ENABLED: Crypto in outgoing offer and answer (if supplied in offer).
// SEC_REQUIRED: Crypto in outgoing offer and answer. Fail any offer with absent
// or unsupported crypto.
enum SecurePolicy {
SEC_DISABLED,
SEC_ENABLED,
SEC_REQUIRED
};
// The transport protocol we've elected to use.
enum TransportProtocol {
ICEPROTO_GOOGLE, // Google version of ICE protocol.
ICEPROTO_HYBRID, // ICE, but can fall back to the Google version.
ICEPROTO_RFC5245 // Standard RFC 5245 version of ICE.
};
// The old name for TransportProtocol.
// TODO(juberti): remove this.
typedef TransportProtocol IceProtocolType;
// Whether our side of the call is driving the negotiation, or the other side.
enum IceRole {
ICEROLE_CONTROLLING = 0,
ICEROLE_CONTROLLED,
ICEROLE_UNKNOWN
};
// ICE RFC 5245 implementation type.
enum IceMode {
ICEMODE_FULL, // As defined in http://tools.ietf.org/html/rfc5245#section-4.1
ICEMODE_LITE // As defined in http://tools.ietf.org/html/rfc5245#section-4.2
};
// RFC 4145 - http://tools.ietf.org/html/rfc4145#section-4
// 'active': The endpoint will initiate an outgoing connection.
// 'passive': The endpoint will accept an incoming connection.
// 'actpass': The endpoint is willing to accept an incoming
// connection or to initiate an outgoing connection.
enum ConnectionRole {
CONNECTIONROLE_NONE = 0,
CONNECTIONROLE_ACTIVE,
CONNECTIONROLE_PASSIVE,
CONNECTIONROLE_ACTPASS,
CONNECTIONROLE_HOLDCONN,
};
extern const char CONNECTIONROLE_ACTIVE_STR[];
extern const char CONNECTIONROLE_PASSIVE_STR[];
extern const char CONNECTIONROLE_ACTPASS_STR[];
extern const char CONNECTIONROLE_HOLDCONN_STR[];
bool StringToConnectionRole(const std::string& role_str, ConnectionRole* role);
bool ConnectionRoleToString(const ConnectionRole& role, std::string* role_str);
typedef std::vector<Candidate> Candidates;
struct TransportDescription {
TransportDescription() : ice_mode(ICEMODE_FULL) {}
TransportDescription(const std::string& transport_type,
const std::vector<std::string>& transport_options,
const std::string& ice_ufrag,
const std::string& ice_pwd,
IceMode ice_mode,
ConnectionRole role,
const talk_base::SSLFingerprint* identity_fingerprint,
const Candidates& candidates)
: transport_type(transport_type),
transport_options(transport_options),
ice_ufrag(ice_ufrag),
ice_pwd(ice_pwd),
ice_mode(ice_mode),
connection_role(role),
identity_fingerprint(CopyFingerprint(identity_fingerprint)),
candidates(candidates) {}
TransportDescription(const std::string& transport_type,
const std::string& ice_ufrag,
const std::string& ice_pwd)
: transport_type(transport_type),
ice_ufrag(ice_ufrag),
ice_pwd(ice_pwd),
ice_mode(ICEMODE_FULL),
connection_role(CONNECTIONROLE_NONE) {}
TransportDescription(const TransportDescription& from)
: transport_type(from.transport_type),
transport_options(from.transport_options),
ice_ufrag(from.ice_ufrag),
ice_pwd(from.ice_pwd),
ice_mode(from.ice_mode),
connection_role(from.connection_role),
identity_fingerprint(CopyFingerprint(from.identity_fingerprint.get())),
candidates(from.candidates) {}
TransportDescription& operator=(const TransportDescription& from) {
// Self-assignment
if (this == &from)
return *this;
transport_type = from.transport_type;
transport_options = from.transport_options;
ice_ufrag = from.ice_ufrag;
ice_pwd = from.ice_pwd;
ice_mode = from.ice_mode;
connection_role = from.connection_role;
identity_fingerprint.reset(CopyFingerprint(
from.identity_fingerprint.get()));
candidates = from.candidates;
return *this;
}
bool HasOption(const std::string& option) const {
return (std::find(transport_options.begin(), transport_options.end(),
option) != transport_options.end());
}
void AddOption(const std::string& option) {
transport_options.push_back(option);
}
bool secure() const { return identity_fingerprint != NULL; }
static talk_base::SSLFingerprint* CopyFingerprint(
const talk_base::SSLFingerprint* from) {
if (!from)
return NULL;
return new talk_base::SSLFingerprint(*from);
}
std::string transport_type; // xmlns of <transport>
std::vector<std::string> transport_options;
std::string ice_ufrag;
std::string ice_pwd;
IceMode ice_mode;
ConnectionRole connection_role;
talk_base::scoped_ptr<talk_base::SSLFingerprint> identity_fingerprint;
Candidates candidates;
};
} // namespace cricket
#endif // TALK_P2P_BASE_TRANSPORTDESCRIPTION_H_
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