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1.1 misho 1: /*
2: * Copyright (C) 2011-2012 Sansar Choinyambuu
3: * Copyright (C) 2011-2014 Andreas Steffen
4: * HSR Hochschule fuer Technik Rapperswil
5: *
6: * This program is free software; you can redistribute it and/or modify it
7: * under the terms of the GNU General Public License as published by the
8: * Free Software Foundation; either version 2 of the License, or (at your
9: * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
10: *
11: * This program is distributed in the hope that it will be useful, but
12: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14: * for more details.
15: */
16:
17: #define _GNU_SOURCE /* for stdndup() */
18: #include <string.h>
19:
20: #include "tcg_pts_attr_unix_file_meta.h"
21:
22: #include <pa_tnc/pa_tnc_msg.h>
23: #include <bio/bio_writer.h>
24: #include <bio/bio_reader.h>
25: #include <collections/linked_list.h>
26: #include <utils/debug.h>
27:
28: typedef struct private_tcg_pts_attr_file_meta_t private_tcg_pts_attr_file_meta_t;
29:
30: /**
31: * Unix-Style File Metadata
32: * see section 3.17.3 of PTS Protocol: Binding to TNC IF-M Specification
33: *
34: * 1 2 3
35: * 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
36: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
37: * | Number of Files included |
38: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
39: * | Number of Files included |
40: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
41: * | File metadata Length | Type | Reserved |
42: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
43: * | File Size |
44: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
45: * | File Size |
46: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
47: * | File Create Time |
48: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
49: * | File Create Time |
50: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
51: * | Last Modify Time |
52: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
53: * | Last Modify Time |
54: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
55: * | Last Access Time |
56: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
57: * | Last Access Time |
58: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
59: * | File Owner ID |
60: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
61: * | File Owner ID |
62: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
63: * | File Group ID |
64: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
65: * | File Group ID |
66: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
67: * ~ Filename (Variable Length) ~
68: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
69: * ...........................
70: */
71:
72: #define PTS_FILE_META_SIZE 8
73: #define PTS_FILE_MEAS_RESERVED 0x00
74: #define PTS_FILE_METADATA_SIZE 52
75:
76: /**
77: * Private data of an tcg_pts_attr_file_meta_t object.
78: */
79: struct private_tcg_pts_attr_file_meta_t {
80:
81: /**
82: * Public members of tcg_pts_attr_file_meta_t
83: */
84: tcg_pts_attr_file_meta_t public;
85:
86: /**
87: * Vendor-specific attribute type
88: */
89: pen_type_t type;
90:
91: /**
92: * Length of attribute value
93: */
94: size_t length;
95:
96: /**
97: * Attribute value or segment
98: */
99: chunk_t value;
100:
101: /**
102: * Noskip flag
103: */
104: bool noskip_flag;
105:
106: /**
107: * PTS File Metadata
108: */
109: pts_file_meta_t *metadata;
110:
111: /**
112: * Reference count
113: */
114: refcount_t ref;
115: };
116:
117: METHOD(pa_tnc_attr_t, get_type, pen_type_t,
118: private_tcg_pts_attr_file_meta_t *this)
119: {
120: return this->type;
121: }
122:
123: METHOD(pa_tnc_attr_t, get_value, chunk_t,
124: private_tcg_pts_attr_file_meta_t *this)
125: {
126: return this->value;
127: }
128:
129: METHOD(pa_tnc_attr_t, get_noskip_flag, bool,
130: private_tcg_pts_attr_file_meta_t *this)
131: {
132: return this->noskip_flag;
133: }
134:
135: METHOD(pa_tnc_attr_t, set_noskip_flag,void,
136: private_tcg_pts_attr_file_meta_t *this, bool noskip)
137: {
138: this->noskip_flag = noskip;
139: }
140:
141: METHOD(pa_tnc_attr_t, build, void,
142: private_tcg_pts_attr_file_meta_t *this)
143: {
144: bio_writer_t *writer;
145: enumerator_t *enumerator;
146: pts_file_metadata_t *entry;
147: uint64_t number_of_files;
148:
149: if (this->value.ptr)
150: {
151: return;
152: }
153: number_of_files = this->metadata->get_file_count(this->metadata);
154: writer = bio_writer_create(PTS_FILE_META_SIZE);
155:
156: writer->write_uint64(writer, number_of_files);
157:
158: enumerator = this->metadata->create_enumerator(this->metadata);
159: while (enumerator->enumerate(enumerator, &entry))
160: {
161: writer->write_uint16(writer, PTS_FILE_METADATA_SIZE +
162: strlen(entry->filename));
163: writer->write_uint8 (writer, entry->type);
164: writer->write_uint8 (writer, PTS_FILE_MEAS_RESERVED);
165: writer->write_uint64(writer, entry->filesize);
166: writer->write_uint64(writer, entry->created);
167: writer->write_uint64(writer, entry->modified);
168: writer->write_uint64(writer, entry->accessed);
169: writer->write_uint64(writer, entry->owner);
170: writer->write_uint64(writer, entry->group);
171: writer->write_data (writer, chunk_create(entry->filename,
172: strlen(entry->filename)));
173: }
174: enumerator->destroy(enumerator);
175:
176: this->value = writer->extract_buf(writer);
177: this->length = this->value.len;
178: writer->destroy(writer);
179: }
180:
181: METHOD(pa_tnc_attr_t, process, status_t,
182: private_tcg_pts_attr_file_meta_t *this, uint32_t *offset)
183: {
184: bio_reader_t *reader;
185: pts_file_metadata_t *entry;
186: uint8_t type, reserved;
187: uint16_t len;
188: uint64_t number_of_files, filesize, created, modified, accessed;
189: uint64_t owner, group;
190: chunk_t filename;
191: status_t status = FAILED;
192:
193: *offset = 0;
194:
195: if (this->value.len < this->length)
196: {
197: return NEED_MORE;
198: }
199: if (this->value.len < PTS_FILE_META_SIZE)
200: {
201: DBG1(DBG_TNC, "insufficient data for PTS Unix-Style file metadata header");
202: return FAILED;
203: }
204: reader = bio_reader_create(this->value);
205: reader->read_uint64(reader, &number_of_files);
206:
207: this->metadata = pts_file_meta_create();
208:
209: while (number_of_files--)
210: {
211: if (!reader->read_uint16(reader, &len))
212: {
213: DBG1(DBG_TNC, "insufficient data for PTS file metadata length");
214: goto end;
215: }
216: if (!reader->read_uint8(reader, &type))
217: {
218: DBG1(DBG_TNC, "insufficient data for file type");
219: goto end;
220: }
221: if (!reader->read_uint8(reader, &reserved))
222: {
223: DBG1(DBG_TNC, "insufficient data for reserved field");
224: goto end;
225: }
226: if (!reader->read_uint64(reader, &filesize))
227: {
228: DBG1(DBG_TNC, "insufficient data for file size");
229: goto end;
230: }
231: if (!reader->read_uint64(reader, &created))
232: {
233: DBG1(DBG_TNC, "insufficient data for file create time");
234: goto end;
235: }
236: if (!reader->read_uint64(reader, &modified))
237: {
238: DBG1(DBG_TNC, "insufficient data for last modify time");
239: goto end;
240: }
241: if (!reader->read_uint64(reader, &accessed))
242: {
243: DBG1(DBG_TNC, "insufficient data for last access time");
244: goto end;
245: }
246: if (!reader->read_uint64(reader, &owner))
247: {
248: DBG1(DBG_TNC, "insufficient data for owner id");
249: goto end;
250: }
251: if (!reader->read_uint64(reader, &group))
252: {
253: DBG1(DBG_TNC, "insufficient data for group id");
254: goto end;
255: }
256: if (!reader->read_data(reader, len - PTS_FILE_METADATA_SIZE, &filename))
257: {
258: DBG1(DBG_TNC, "insufficient data for filename");
259: goto end;
260: }
261:
262: entry = malloc_thing(pts_file_metadata_t);
263: entry->type = type;
264: entry->filesize = filesize;
265: entry->created = created;
266: entry->modified = modified;
267: entry->accessed = accessed;
268: entry->owner = owner;
269: entry->group = group;
270: entry->filename = strndup(filename.ptr, filename.len);
271:
272: this->metadata->add(this->metadata, entry);
273: }
274: status = SUCCESS;
275:
276: end:
277: reader->destroy(reader);
278: return status;
279: }
280:
281: METHOD(pa_tnc_attr_t, add_segment, void,
282: private_tcg_pts_attr_file_meta_t *this, chunk_t segment)
283: {
284: this->value = chunk_cat("mc", this->value, segment);
285: }
286:
287: METHOD(pa_tnc_attr_t, get_ref, pa_tnc_attr_t*,
288: private_tcg_pts_attr_file_meta_t *this)
289: {
290: ref_get(&this->ref);
291: return &this->public.pa_tnc_attribute;
292: }
293:
294: METHOD(pa_tnc_attr_t, destroy, void,
295: private_tcg_pts_attr_file_meta_t *this)
296: {
297: if (ref_put(&this->ref))
298: {
299: DESTROY_IF(this->metadata);
300: free(this->value.ptr);
301: free(this);
302: }
303: }
304:
305: METHOD(tcg_pts_attr_file_meta_t, get_metadata, pts_file_meta_t*,
306: private_tcg_pts_attr_file_meta_t *this)
307: {
308: return this->metadata;
309: }
310:
311: /**
312: * Described in header.
313: */
314: pa_tnc_attr_t *tcg_pts_attr_unix_file_meta_create(pts_file_meta_t *metadata)
315: {
316: private_tcg_pts_attr_file_meta_t *this;
317:
318: INIT(this,
319: .public = {
320: .pa_tnc_attribute = {
321: .get_type = _get_type,
322: .get_value = _get_value,
323: .get_noskip_flag = _get_noskip_flag,
324: .set_noskip_flag = _set_noskip_flag,
325: .build = _build,
326: .process = _process,
327: .add_segment = _add_segment,
328: .get_ref = _get_ref,
329: .destroy = _destroy,
330: },
331: .get_metadata = _get_metadata,
332: },
333: .type = { PEN_TCG, TCG_PTS_UNIX_FILE_META },
334: .metadata = metadata,
335: .ref = 1,
336: );
337:
338: return &this->public.pa_tnc_attribute;
339: }
340:
341:
342: /**
343: * Described in header.
344: */
345: pa_tnc_attr_t *tcg_pts_attr_unix_file_meta_create_from_data(size_t length,
346: chunk_t data)
347: {
348: private_tcg_pts_attr_file_meta_t *this;
349:
350: INIT(this,
351: .public = {
352: .pa_tnc_attribute = {
353: .get_type = _get_type,
354: .get_value = _get_value,
355: .get_noskip_flag = _get_noskip_flag,
356: .set_noskip_flag = _set_noskip_flag,
357: .build = _build,
358: .process = _process,
359: .add_segment = _add_segment,
360: .get_ref = _get_ref,
361: .destroy = _destroy,
362: },
363: .get_metadata = _get_metadata,
364: },
365: .type = { PEN_TCG, TCG_PTS_UNIX_FILE_META },
366: .length = length,
367: .value = chunk_clone(data),
368: .ref = 1,
369: );
370:
371: return &this->public.pa_tnc_attribute;
372: }