Reuse generic constructor in IMV/IMC message
[strongswan.git] / src / libimcv / imc / imc_msg.h
1 /*
2 * Copyright (C) 2012 Andreas Steffen
3 * HSR Hochschule fuer Technik Rapperswil
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * for more details.
14 */
15
16 /**
17 * @defgroup imc_msg imc_msg
18 * @{ @ingroup libimcv
19 */
20
21 #ifndef IMC_MSG_H_
22 #define IMC_MSG_H_
23
24 #include <imc/imc_agent.h>
25
26 typedef struct imc_msg_t imc_msg_t;
27
28 #include <library.h>
29
30 /**
31 * Interface for a PA-TNC message handled by an IMC.
32 *
33 */
34 struct imc_msg_t {
35
36 /**
37 * Get source ID of PA-TNC message
38 *
39 * @return src ID
40 */
41 TNC_UInt32 (*get_src_id)(imc_msg_t *this);
42
43 /**
44 * Get destination ID of PA-TNC message
45 *
46 * @return destination ID
47 */
48 TNC_UInt32 (*get_dst_id)(imc_msg_t *this);
49
50 /**
51 * Sends one or multiple PA-TNC messages
52 *
53 * @param excl set the excl message flag if supported
54 * @return TNC result code
55 */
56 TNC_Result (*send)(imc_msg_t *this, bool excl);
57
58 /**
59 * Processes a received PA-TNC message
60 *
61 * @param fatal_error TRUE if IMV sent a fatal error message
62 * @return TNC result code
63 */
64 TNC_Result (*receive)(imc_msg_t *this, bool *fatal_error);
65
66 /**
67 * Add a PA-TNC attribute to the send queue
68 *
69 * @param attr PA-TNC attribute to be added
70 */
71 void (*add_attribute)(imc_msg_t *this, pa_tnc_attr_t *attr);
72
73 /**
74 * Enumerator over PA-TNC attributes contained in the PA-TNC message
75 *
76 * @return PA-TNC attribute enumerator
77 */
78 enumerator_t* (*create_attribute_enumerator)(imc_msg_t *this);
79
80 /**
81 * Get the encoding of the IMC message.
82 *
83 * @return message encoding, internal data
84 */
85 chunk_t (*get_encoding)(imc_msg_t *this);
86
87 /**
88 * Destroys a imc_msg_t object.
89 */
90 void (*destroy)(imc_msg_t *this);
91 };
92
93 /**
94 * Create a wrapper for an outbound message
95 *
96 * @param agent IMC agent responsible for the message
97 * @param state IMC state for the given connection ID
98 * @param connection_id connection ID
99 * @param src_id source IMC ID
100 * @param dst_id destination IMV ID
101 * @param msg_type PA-TNC message type
102 */
103 imc_msg_t* imc_msg_create(imc_agent_t *agent, imc_state_t *state,
104 TNC_ConnectionID connection_id,
105 TNC_UInt32 src_id, TNC_UInt32 dst_id,
106 pen_type_t msg_type);
107
108 /**
109 * Create a wrapper for an outbound message based on a received message
110 *
111 * @param msg received message the reply is based on
112 */
113 imc_msg_t* imc_msg_create_as_reply(imc_msg_t *msg);
114
115 /**
116 * Create a wrapper around message data received via the legacy IF-IMC interface
117 *
118 * @param agent IMC agent responsible for the message
119 * @param state IMC state for the given connection ID
120 * @param connection_id connection ID
121 * @param msg_type PA-TNC message type
122 * @param msg received PA-TNC message blob
123 */
124 imc_msg_t* imc_msg_create_from_data(imc_agent_t *agent, imc_state_t *state,
125 TNC_ConnectionID connection_id,
126 TNC_MessageType msg_type,
127 chunk_t msg);
128
129 /**
130 * Create a wrapper around message data received via the long IF-IMC interface
131 *
132 * @param agent IMC agent responsible for the message
133 * @param state IMC state for the given connection ID
134 * @param connection_id connection ID
135 * @param src_id source IMV ID
136 * @param dst_id destination IMC ID
137 * @param msg_flags PA-TNC message flags
138 * @param msg_vid PA-TNC message vendor ID
139 * @param msg_subtype PA-TNC subtype
140 * @param msg received PA-TNC message blob
141 */
142 imc_msg_t* imc_msg_create_from_long_data(imc_agent_t *agent, imc_state_t *state,
143 TNC_ConnectionID connection_id,
144 TNC_UInt32 src_id, TNC_UInt32 dst_id,
145 TNC_VendorID msg_vid,
146 TNC_MessageSubtype msg_subtype,
147 chunk_t msg);
148
149 #endif /** IMC_MSG_H_ @}*/