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1.1 misho 1: /*
2: * Copyright (C) 2012-2014 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: #include "ietf_attr_numeric_version.h"
17:
18: #include <pa_tnc/pa_tnc_msg.h>
19: #include <bio/bio_writer.h>
20: #include <bio/bio_reader.h>
21: #include <utils/debug.h>
22:
23: typedef struct private_ietf_attr_numeric_version_t private_ietf_attr_numeric_version_t;
24:
25: /**
26: * PA-TNC Numeric Version type (see section 4.2.3 of RFC 5792)
27: *
28: * 1 2 3
29: * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
30: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
31: * | Major Version Number |
32: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
33: * | Minor Version Number |
34: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
35: * | Build Number |
36: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
37: * | Service Pack Major | Service Pack Minor |
38: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
39: */
40:
41: #define NUMERIC_VERSION_SIZE 16
42:
43: /**
44: * Private data of an ietf_attr_numeric_version_t object.
45: */
46: struct private_ietf_attr_numeric_version_t {
47:
48: /**
49: * Public members of ietf_attr_numeric_version_t
50: */
51: ietf_attr_numeric_version_t public;
52:
53: /**
54: * Vendor-specific attribute type
55: */
56: pen_type_t type;
57:
58: /**
59: * Length of attribute value
60: */
61: size_t length;
62:
63: /**
64: * Attribute value or segment
65: */
66: chunk_t value;
67:
68: /**
69: * Noskip flag
70: */
71: bool noskip_flag;
72:
73: /**
74: * Major Version Number
75: */
76: uint32_t major_version;
77:
78: /**
79: * Minor Version Number
80: */
81: uint32_t minor_version;
82:
83: /**
84: * IBuild Number
85: */
86: uint32_t build;
87:
88: /**
89: * Service Pack Major Number
90: */
91: uint16_t service_pack_major;
92:
93: /**
94: * Service Pack Minor Number
95: */
96: uint16_t service_pack_minor;
97:
98: /**
99: * Reference count
100: */
101: refcount_t ref;
102: };
103:
104: METHOD(pa_tnc_attr_t, get_type, pen_type_t,
105: private_ietf_attr_numeric_version_t *this)
106: {
107: return this->type;
108: }
109:
110: METHOD(pa_tnc_attr_t, get_value, chunk_t,
111: private_ietf_attr_numeric_version_t *this)
112: {
113: return this->value;
114: }
115:
116: METHOD(pa_tnc_attr_t, get_noskip_flag, bool,
117: private_ietf_attr_numeric_version_t *this)
118: {
119: return this->noskip_flag;
120: }
121:
122: METHOD(pa_tnc_attr_t, set_noskip_flag,void,
123: private_ietf_attr_numeric_version_t *this, bool noskip)
124: {
125: this->noskip_flag = noskip;
126: }
127:
128: METHOD(pa_tnc_attr_t, build, void,
129: private_ietf_attr_numeric_version_t *this)
130: {
131: bio_writer_t *writer;
132:
133: if (this->value.ptr)
134: {
135: return;
136: }
137:
138: writer = bio_writer_create(NUMERIC_VERSION_SIZE);
139: writer->write_uint32(writer, this->major_version);
140: writer->write_uint32(writer, this->minor_version);
141: writer->write_uint32(writer, this->build);
142: writer->write_uint16(writer, this->service_pack_major);
143: writer->write_uint16(writer, this->service_pack_minor);
144:
145: this->value = writer->extract_buf(writer);
146: this->length = this->value.len;
147: writer->destroy(writer);
148: }
149:
150: METHOD(pa_tnc_attr_t, process, status_t,
151: private_ietf_attr_numeric_version_t *this, uint32_t *offset)
152: {
153: bio_reader_t *reader;
154:
155: *offset = 0;
156:
157: if (this->value.len < this->length)
158: {
159: return NEED_MORE;
160: }
161: if (this->value.len < NUMERIC_VERSION_SIZE)
162: {
163: DBG1(DBG_TNC, "insufficient data for IETF numeric version");
164: return FAILED;
165: }
166: reader = bio_reader_create(this->value);
167: reader->read_uint32(reader, &this->major_version);
168: reader->read_uint32(reader, &this->minor_version);
169: reader->read_uint32(reader, &this->build);
170: reader->read_uint16(reader, &this->service_pack_major);
171: reader->read_uint16(reader, &this->service_pack_minor);
172: reader->destroy(reader);
173:
174: return SUCCESS;
175: }
176:
177: METHOD(pa_tnc_attr_t, add_segment, void,
178: private_ietf_attr_numeric_version_t *this, chunk_t segment)
179: {
180: this->value = chunk_cat("mc", this->value, segment);
181: }
182:
183: METHOD(pa_tnc_attr_t, get_ref, pa_tnc_attr_t*,
184: private_ietf_attr_numeric_version_t *this)
185: {
186: ref_get(&this->ref);
187: return &this->public.pa_tnc_attribute;
188: }
189:
190: METHOD(pa_tnc_attr_t, destroy, void,
191: private_ietf_attr_numeric_version_t *this)
192: {
193: if (ref_put(&this->ref))
194: {
195: free(this->value.ptr);
196: free(this);
197: }
198: }
199:
200: METHOD(ietf_attr_numeric_version_t, get_version, void,
201: private_ietf_attr_numeric_version_t *this, uint32_t *major, uint32_t *minor)
202: {
203: if (major)
204: {
205: *major = this->major_version;
206: }
207: if (minor)
208: {
209: *minor = this->minor_version;
210: }
211: }
212:
213: METHOD(ietf_attr_numeric_version_t, get_build, uint32_t,
214: private_ietf_attr_numeric_version_t *this)
215: {
216: return this->build;
217: }
218:
219: METHOD(ietf_attr_numeric_version_t, get_service_pack, void,
220: private_ietf_attr_numeric_version_t *this, uint16_t *major, uint16_t *minor)
221: {
222: if (major)
223: {
224: *major = this->service_pack_major;
225: }
226: if (minor)
227: {
228: *minor = this->service_pack_minor;
229: }
230: }
231:
232: /**
233: * Described in header.
234: */
235: pa_tnc_attr_t *ietf_attr_numeric_version_create(uint32_t major, uint32_t minor,
236: uint32_t build,
237: uint16_t service_pack_major,
238: uint16_t service_pack_minor)
239: {
240: private_ietf_attr_numeric_version_t *this;
241:
242: INIT(this,
243: .public = {
244: .pa_tnc_attribute = {
245: .get_type = _get_type,
246: .get_value = _get_value,
247: .get_noskip_flag = _get_noskip_flag,
248: .set_noskip_flag = _set_noskip_flag,
249: .build = _build,
250: .process = _process,
251: .add_segment = _add_segment,
252: .get_ref = _get_ref,
253: .destroy = _destroy,
254: },
255: .get_version = _get_version,
256: .get_build = _get_build,
257: .get_service_pack = _get_service_pack,
258: },
259: .type = { PEN_IETF, IETF_ATTR_NUMERIC_VERSION },
260: .major_version = major,
261: .minor_version = minor,
262: .build = build,
263: .service_pack_major = service_pack_major,
264: .service_pack_minor = service_pack_minor,
265: .ref = 1,
266: );
267:
268: return &this->public.pa_tnc_attribute;
269: }
270:
271: /**
272: * Described in header.
273: */
274: pa_tnc_attr_t *ietf_attr_numeric_version_create_from_data(size_t length,
275: chunk_t data)
276: {
277: private_ietf_attr_numeric_version_t *this;
278:
279: INIT(this,
280: .public = {
281: .pa_tnc_attribute = {
282: .get_type = _get_type,
283: .get_value = _get_value,
284: .get_noskip_flag = _get_noskip_flag,
285: .set_noskip_flag = _set_noskip_flag,
286: .build = _build,
287: .process = _process,
288: .add_segment = _add_segment,
289: .get_ref = _get_ref,
290: .destroy = _destroy,
291: },
292: .get_version = _get_version,
293: .get_build = _get_build,
294: .get_service_pack = _get_service_pack,
295: },
296: .type = { PEN_IETF, IETF_ATTR_NUMERIC_VERSION },
297: .length = length,
298: .value = chunk_clone(data),
299: .ref = 1,
300: );
301:
302: return &this->public.pa_tnc_attribute;
303: }