4db94043cb
Files correlati : Commento : Spostamento in libraries delle librerie esterne di Campo per una maggiore pulizia e organizzazione git-svn-id: svn://10.65.10.50/branches/R_10_00@24150 c028cbd2-c16b-5b4b-a496-9718f37d4682
102 lines
3.2 KiB
C++
102 lines
3.2 KiB
C++
/*
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Copyright (c) 2007-2013 Contributors as noted in the AUTHORS file
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This file is part of 0MQ.
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0MQ is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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0MQ is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ZMQ_MECHANISM_HPP_INCLUDED__
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#define __ZMQ_MECHANISM_HPP_INCLUDED__
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#include "stdint.hpp"
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#include "options.hpp"
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#include "blob.hpp"
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namespace zmq
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{
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// Abstract class representing security mechanism.
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// Different mechanism extedns this class.
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class msg_t;
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class mechanism_t
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{
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public:
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mechanism_t (const options_t &options_);
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virtual ~mechanism_t ();
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// Prepare next handshake command that is to be sent to the peer.
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virtual int next_handshake_command (msg_t *msg_) = 0;
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// Process the handshake command received from the peer.
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virtual int process_handshake_command (msg_t *msg_) = 0;
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virtual int encode (msg_t *msg_) { return 0; }
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virtual int decode (msg_t *msg_) { return 0; }
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// Notifies mechanism about availability of ZAP message.
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virtual int zap_msg_available () { return 0; }
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// True iff the handshake stage is complete?
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virtual bool is_handshake_complete () const = 0;
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void set_peer_identity (const void *id_ptr, size_t id_size);
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void peer_identity (msg_t *msg_);
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protected:
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// Only used to identify the socket for the Socket-Type
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// property in the wire protocol.
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const char *socket_type_string (int socket_type) const;
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size_t add_property (unsigned char *ptr, const char *name,
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const void *value, size_t value_len) const;
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// Parses a metadata.
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// Metadata consists of a list of properties consisting of
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// name and value as size-specified strings.
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// Returns 0 on success and -1 on error, in which case errno is set.
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int parse_metadata (const unsigned char *ptr_, size_t length);
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// This is called by parse_property method whenever it
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// parses a new property. The function should return 0
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// on success and -1 on error, in which case it should
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// set errno. Signaling error prevents parser from
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// parsing remaining data.
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// Derived classes are supposed to override this
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// method to handle custom processing.
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virtual int property (const std::string name_,
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const void *value_, size_t length_);
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options_t options;
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private:
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blob_t identity;
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// Returns true iff socket associated with the mechanism
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// is compatible with a given socket type 'type_'.
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bool check_socket_type (const std::string type_) const;
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};
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}
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#endif
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