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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_op_status.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: #include <time.h>
24:
25: typedef struct private_ietf_attr_op_status_t private_ietf_attr_op_status_t;
26:
27: ENUM(op_status_names, OP_STATUS_UNKNOWN, OP_STATUS_OPERATIONAL,
28: "unknown",
29: "not installed",
30: "installed",
31: "operational"
32: );
33:
34: ENUM(op_result_names, OP_RESULT_UNKNOWN, OP_RESULT_UNSUCCESSFUL,
35: "unknown",
36: "successful",
37: "errored",
38: "unsuccessful"
39: );
40:
41: /**
42: * PA-TNC Operational Status type (see section 4.2.5 of RFC 5792)
43: *
44: * 1 2 3
45: * 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
46: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
47: * | Status | Result | Reserved |
48: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
49: * | Last Use |
50: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
51: * | Last Use (continued) |
52: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
53: * | Last Use (continued) |
54: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
55: * | Last Use (continued) |
56: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
57: * | Last Use (continued) |
58: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
59: */
60:
61: #define OP_STATUS_SIZE 24
62:
63: /**
64: * Private data of an ietf_attr_op_status_t object.
65: */
66: struct private_ietf_attr_op_status_t {
67:
68: /**
69: * Public members of ietf_attr_op_status_t
70: */
71: ietf_attr_op_status_t public;
72:
73: /**
74: * Vendor-specific attribute type
75: */
76: pen_type_t type;
77:
78: /**
79: * Length of attribute value
80: */
81: size_t length;
82:
83: /**
84: * Attribute value or segment
85: */
86: chunk_t value;
87:
88: /**
89: * Noskip flag
90: */
91: bool noskip_flag;
92:
93: /**
94: * Status
95: */
96: uint8_t status;
97:
98: /**
99: * Result
100: */
101: uint8_t result;
102:
103: /**
104: * Last Use
105: */
106: time_t last_use;
107:
108: /**
109: * Reference count
110: */
111: refcount_t ref;
112: };
113:
114: METHOD(pa_tnc_attr_t, get_type, pen_type_t,
115: private_ietf_attr_op_status_t *this)
116: {
117: return this->type;
118: }
119:
120: METHOD(pa_tnc_attr_t, get_value, chunk_t,
121: private_ietf_attr_op_status_t *this)
122: {
123: return this->value;
124: }
125:
126: METHOD(pa_tnc_attr_t, get_noskip_flag, bool,
127: private_ietf_attr_op_status_t *this)
128: {
129: return this->noskip_flag;
130: }
131:
132: METHOD(pa_tnc_attr_t, set_noskip_flag,void,
133: private_ietf_attr_op_status_t *this, bool noskip)
134: {
135: this->noskip_flag = noskip;
136: }
137:
138: METHOD(pa_tnc_attr_t, build, void,
139: private_ietf_attr_op_status_t *this)
140: {
141: bio_writer_t *writer;
142: char last_use[24];
143: struct tm t;
144:
145: if (this->value.ptr)
146: {
147: return;
148: }
149:
150: /* Conversion from time_t to RFC 3339 ASCII string */
151: gmtime_r(&this->last_use, &t);
152: snprintf(last_use, 21, "%04d-%02d-%02dT%02d:%02d:%02dZ", 1900 + t.tm_year,
153: t.tm_mon + 1, t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec);
154:
155: writer = bio_writer_create(OP_STATUS_SIZE);
156: writer->write_uint8 (writer, this->status);
157: writer->write_uint8 (writer, this->result);
158: writer->write_uint16(writer, 0x0000);
159: writer->write_data (writer, chunk_create(last_use, 20));
160:
161: this->value = writer->extract_buf(writer);
162: this->length = this->value.len;
163: writer->destroy(writer);
164: }
165:
166: METHOD(pa_tnc_attr_t, process, status_t,
167: private_ietf_attr_op_status_t *this, uint32_t *offset)
168: {
169: bio_reader_t *reader;
170: chunk_t last_use;
171: uint16_t reserved;
172: struct tm t;
173: char buf[BUF_LEN];
174:
175: *offset = 0;
176:
177: if (this->value.len < this->length)
178: {
179: return NEED_MORE;
180: }
181: if (this->value.len != OP_STATUS_SIZE)
182: {
183: DBG1(DBG_TNC, "incorrect size for IETF operational status");
184: return FAILED;
185: }
186: reader = bio_reader_create(this->value);
187: reader->read_uint8 (reader, &this->status);
188: reader->read_uint8 (reader, &this->result);
189: reader->read_uint16(reader, &reserved);
190: reader->read_data (reader, 20, &last_use);
191: reader->destroy(reader);
192:
193: if (this->status > OP_STATUS_ROOF)
194: {
195: DBG1(DBG_TNC, "invalid status value %c for IETF operational status",
196: this->status);
197: return FAILED;
198: }
199:
200: *offset = 1;
201:
202: if (this->result > OP_RESULT_ROOF)
203: {
204: DBG1(DBG_TNC, "invalid result value %c for IETF operational status",
205: this->result);
206: return FAILED;
207: }
208:
209: *offset = 4;
210:
211: /* Conversion from RFC 3339 ASCII string to time_t */
212: snprintf(buf, sizeof(buf), "%.*s", (int)last_use.len, last_use.ptr);
213: if (sscanf(buf, "%4d-%2d-%2dT%2d:%2d:%2dZ", &t.tm_year, &t.tm_mon,
214: &t.tm_mday, &t.tm_hour, &t.tm_min, &t.tm_sec) != 6)
215: {
216: DBG1(DBG_TNC, "invalid last_use time format in IETF operational status");
217: return FAILED;
218: }
219: t.tm_year -= 1900;
220: t.tm_mon -= 1;
221: t.tm_isdst = 0;
222: this->last_use = mktime(&t) - timezone;
223:
224: return SUCCESS;
225: }
226:
227: METHOD(pa_tnc_attr_t, add_segment, void,
228: private_ietf_attr_op_status_t *this, chunk_t segment)
229: {
230: this->value = chunk_cat("mc", this->value, segment);
231: }
232:
233: METHOD(pa_tnc_attr_t, get_ref, pa_tnc_attr_t*,
234: private_ietf_attr_op_status_t *this)
235: {
236: ref_get(&this->ref);
237: return &this->public.pa_tnc_attribute;
238: }
239:
240: METHOD(pa_tnc_attr_t, destroy, void,
241: private_ietf_attr_op_status_t *this)
242: {
243: if (ref_put(&this->ref))
244: {
245: free(this->value.ptr);
246: free(this);
247: }
248: }
249:
250: METHOD(ietf_attr_op_status_t, get_status, uint8_t,
251: private_ietf_attr_op_status_t *this)
252: {
253: return this->status;
254: }
255:
256: METHOD(ietf_attr_op_status_t, get_result, uint8_t,
257: private_ietf_attr_op_status_t *this)
258: {
259: return this->result;
260: }
261:
262: METHOD(ietf_attr_op_status_t, get_last_use, time_t,
263: private_ietf_attr_op_status_t *this)
264: {
265: return this->last_use;
266: }
267:
268: /**
269: * Described in header.
270: */
271: pa_tnc_attr_t *ietf_attr_op_status_create(uint8_t status, uint8_t result,
272: time_t last_use)
273: {
274: private_ietf_attr_op_status_t *this;
275:
276: INIT(this,
277: .public = {
278: .pa_tnc_attribute = {
279: .get_type = _get_type,
280: .get_value = _get_value,
281: .get_noskip_flag = _get_noskip_flag,
282: .set_noskip_flag = _set_noskip_flag,
283: .build = _build,
284: .process = _process,
285: .add_segment = _add_segment,
286: .get_ref = _get_ref,
287: .destroy = _destroy,
288: },
289: .get_status = _get_status,
290: .get_result = _get_result,
291: .get_last_use = _get_last_use,
292: },
293: .type = { PEN_IETF, IETF_ATTR_OPERATIONAL_STATUS },
294: .status = status,
295: .result = result,
296: .last_use = last_use,
297: .ref = 1,
298: );
299:
300: return &this->public.pa_tnc_attribute;
301: }
302:
303: /**
304: * Described in header.
305: */
306: pa_tnc_attr_t *ietf_attr_op_status_create_from_data(size_t length, chunk_t data)
307: {
308: private_ietf_attr_op_status_t *this;
309:
310: INIT(this,
311: .public = {
312: .pa_tnc_attribute = {
313: .get_type = _get_type,
314: .get_value = _get_value,
315: .get_noskip_flag = _get_noskip_flag,
316: .set_noskip_flag = _set_noskip_flag,
317: .build = _build,
318: .process = _process,
319: .add_segment = _add_segment,
320: .get_ref = _get_ref,
321: .destroy = _destroy,
322: },
323: .get_status = _get_status,
324: .get_result = _get_result,
325: .get_last_use = _get_last_use,
326: },
327: .type = { PEN_IETF, IETF_ATTR_OPERATIONAL_STATUS },
328: .value = chunk_clone(data),
329: .ref = 1,
330: );
331:
332: return &this->public.pa_tnc_attribute;
333: }
334: