Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * Copyright (c) 2018 Yubico AB. All rights reserved. |
3 | | * Use of this source code is governed by a BSD-style |
4 | | * license that can be found in the LICENSE file. |
5 | | */ |
6 | | |
7 | | #include "fido.h" |
8 | | |
9 | | static int |
10 | | decode_version(const cbor_item_t *item, void *arg) |
11 | 20.5k | { |
12 | 20.5k | fido_str_array_t *v = arg; |
13 | 20.5k | const size_t i = v->len; |
14 | 20.5k | |
15 | 20.5k | /* keep ptr[x] and len consistent */ |
16 | 20.5k | if (cbor_string_copy(item, &v->ptr[i]) < 0) { |
17 | 83 | fido_log_debug("%s: cbor_string_copy", __func__); |
18 | 83 | return (-1); |
19 | 83 | } |
20 | 20.4k | |
21 | 20.4k | v->len++; |
22 | 20.4k | |
23 | 20.4k | return (0); |
24 | 20.4k | } |
25 | | |
26 | | static int |
27 | | decode_versions(const cbor_item_t *item, fido_str_array_t *v) |
28 | 6.80k | { |
29 | 6.80k | v->ptr = NULL; |
30 | 6.80k | v->len = 0; |
31 | 6.80k | |
32 | 6.80k | if (cbor_isa_array(item) == false || |
33 | 6.80k | cbor_array_is_definite(item) == false) { |
34 | 39 | fido_log_debug("%s: cbor type", __func__); |
35 | 39 | return (-1); |
36 | 39 | } |
37 | 6.76k | |
38 | 6.76k | v->ptr = calloc(cbor_array_size(item), sizeof(char *)); |
39 | 6.76k | if (v->ptr == NULL) |
40 | 6.76k | return (-1); |
41 | 6.74k | |
42 | 6.74k | if (cbor_array_iter(item, v, decode_version) < 0) { |
43 | 89 | fido_log_debug("%s: decode_version", __func__); |
44 | 89 | return (-1); |
45 | 89 | } |
46 | 6.65k | |
47 | 6.65k | return (0); |
48 | 6.65k | } |
49 | | |
50 | | static int |
51 | | decode_extension(const cbor_item_t *item, void *arg) |
52 | 14.6k | { |
53 | 14.6k | fido_str_array_t *e = arg; |
54 | 14.6k | const size_t i = e->len; |
55 | 14.6k | |
56 | 14.6k | /* keep ptr[x] and len consistent */ |
57 | 14.6k | if (cbor_string_copy(item, &e->ptr[i]) < 0) { |
58 | 55 | fido_log_debug("%s: cbor_string_copy", __func__); |
59 | 55 | return (-1); |
60 | 55 | } |
61 | 14.5k | |
62 | 14.5k | e->len++; |
63 | 14.5k | |
64 | 14.5k | return (0); |
65 | 14.5k | } |
66 | | |
67 | | static int |
68 | | decode_extensions(const cbor_item_t *item, fido_str_array_t *e) |
69 | 6.95k | { |
70 | 6.95k | e->ptr = NULL; |
71 | 6.95k | e->len = 0; |
72 | 6.95k | |
73 | 6.95k | if (cbor_isa_array(item) == false || |
74 | 6.95k | cbor_array_is_definite(item) == false) { |
75 | 37 | fido_log_debug("%s: cbor type", __func__); |
76 | 37 | return (-1); |
77 | 37 | } |
78 | 6.91k | |
79 | 6.91k | e->ptr = calloc(cbor_array_size(item), sizeof(char *)); |
80 | 6.91k | if (e->ptr == NULL) |
81 | 6.91k | return (-1); |
82 | 6.90k | |
83 | 6.90k | if (cbor_array_iter(item, e, decode_extension) < 0) { |
84 | 62 | fido_log_debug("%s: decode_extension", __func__); |
85 | 62 | return (-1); |
86 | 62 | } |
87 | 6.84k | |
88 | 6.84k | return (0); |
89 | 6.84k | } |
90 | | |
91 | | static int |
92 | | decode_aaguid(const cbor_item_t *item, unsigned char *aaguid, size_t aaguid_len) |
93 | 6.65k | { |
94 | 6.65k | if (cbor_isa_bytestring(item) == false || |
95 | 6.65k | cbor_bytestring_is_definite(item) == false || |
96 | 6.65k | cbor_bytestring_length(item) != aaguid_len) { |
97 | 116 | fido_log_debug("%s: cbor type", __func__); |
98 | 116 | return (-1); |
99 | 116 | } |
100 | 6.53k | |
101 | 6.53k | memcpy(aaguid, cbor_bytestring_handle(item), aaguid_len); |
102 | 6.53k | |
103 | 6.53k | return (0); |
104 | 6.53k | } |
105 | | |
106 | | static int |
107 | | decode_option(const cbor_item_t *key, const cbor_item_t *val, void *arg) |
108 | 34.6k | { |
109 | 34.6k | fido_opt_array_t *o = arg; |
110 | 34.6k | const size_t i = o->len; |
111 | 34.6k | |
112 | 34.6k | if (cbor_isa_float_ctrl(val) == false || |
113 | 34.6k | cbor_float_get_width(val) != CBOR_FLOAT_0 || |
114 | 34.6k | cbor_is_bool(val) == false) { |
115 | 1.55k | fido_log_debug("%s: cbor type", __func__); |
116 | 1.55k | return (0); /* ignore */ |
117 | 1.55k | } |
118 | 33.1k | |
119 | 33.1k | if (cbor_string_copy(key, &o->name[i]) < 0) { |
120 | 176 | fido_log_debug("%s: cbor_string_copy", __func__); |
121 | 176 | return (0); /* ignore */ |
122 | 176 | } |
123 | 32.9k | |
124 | 32.9k | /* keep name/value and len consistent */ |
125 | 32.9k | o->value[i] = cbor_ctrl_value(val) == CBOR_CTRL_TRUE; |
126 | 32.9k | o->len++; |
127 | 32.9k | |
128 | 32.9k | return (0); |
129 | 32.9k | } |
130 | | |
131 | | static int |
132 | | decode_options(const cbor_item_t *item, fido_opt_array_t *o) |
133 | 6.48k | { |
134 | 6.48k | o->name = NULL; |
135 | 6.48k | o->value = NULL; |
136 | 6.48k | o->len = 0; |
137 | 6.48k | |
138 | 6.48k | if (cbor_isa_map(item) == false || |
139 | 6.48k | cbor_map_is_definite(item) == false) { |
140 | 34 | fido_log_debug("%s: cbor type", __func__); |
141 | 34 | return (-1); |
142 | 34 | } |
143 | 6.45k | |
144 | 6.45k | o->name = calloc(cbor_map_size(item), sizeof(char *)); |
145 | 6.45k | o->value = calloc(cbor_map_size(item), sizeof(bool)); |
146 | 6.45k | if (o->name == NULL || o->value == NULL) |
147 | 6.45k | return (-1); |
148 | 6.42k | |
149 | 6.42k | return (cbor_map_iter(item, o, decode_option)); |
150 | 6.42k | } |
151 | | |
152 | | static int |
153 | | decode_protocol(const cbor_item_t *item, void *arg) |
154 | 7.64k | { |
155 | 7.64k | fido_byte_array_t *p = arg; |
156 | 7.64k | const size_t i = p->len; |
157 | 7.64k | |
158 | 7.64k | if (cbor_isa_uint(item) == false || |
159 | 7.64k | cbor_int_get_width(item) != CBOR_INT_8) { |
160 | 77 | fido_log_debug("%s: cbor type", __func__); |
161 | 77 | return (-1); |
162 | 77 | } |
163 | 7.56k | |
164 | 7.56k | /* keep ptr[x] and len consistent */ |
165 | 7.56k | p->ptr[i] = cbor_get_uint8(item); |
166 | 7.56k | p->len++; |
167 | 7.56k | |
168 | 7.56k | return (0); |
169 | 7.56k | } |
170 | | |
171 | | static int |
172 | | decode_protocols(const cbor_item_t *item, fido_byte_array_t *p) |
173 | 6.15k | { |
174 | 6.15k | p->ptr = NULL; |
175 | 6.15k | p->len = 0; |
176 | 6.15k | |
177 | 6.15k | if (cbor_isa_array(item) == false || |
178 | 6.15k | cbor_array_is_definite(item) == false) { |
179 | 44 | fido_log_debug("%s: cbor type", __func__); |
180 | 44 | return (-1); |
181 | 44 | } |
182 | 6.10k | |
183 | 6.10k | p->ptr = calloc(cbor_array_size(item), sizeof(uint8_t)); |
184 | 6.10k | if (p->ptr == NULL) |
185 | 6.10k | return (-1); |
186 | 6.09k | |
187 | 6.09k | if (cbor_array_iter(item, p, decode_protocol) < 0) { |
188 | 84 | fido_log_debug("%s: decode_protocol", __func__); |
189 | 84 | return (-1); |
190 | 84 | } |
191 | 6.01k | |
192 | 6.01k | return (0); |
193 | 6.01k | } |
194 | | |
195 | | static int |
196 | | parse_reply_element(const cbor_item_t *key, const cbor_item_t *val, void *arg) |
197 | 62.1k | { |
198 | 62.1k | fido_cbor_info_t *ci = arg; |
199 | 62.1k | |
200 | 62.1k | if (cbor_isa_uint(key) == false || |
201 | 62.1k | cbor_int_get_width(key) != CBOR_INT_8) { |
202 | 2.44k | fido_log_debug("%s: cbor type", __func__); |
203 | 2.44k | return (0); /* ignore */ |
204 | 2.44k | } |
205 | 59.7k | |
206 | 59.7k | switch (cbor_get_uint8(key)) { |
207 | 6.80k | case 1: /* versions */ |
208 | 6.80k | return (decode_versions(val, &ci->versions)); |
209 | 6.95k | case 2: /* extensions */ |
210 | 6.95k | return (decode_extensions(val, &ci->extensions)); |
211 | 6.65k | case 3: /* aaguid */ |
212 | 6.65k | return (decode_aaguid(val, ci->aaguid, sizeof(ci->aaguid))); |
213 | 6.48k | case 4: /* options */ |
214 | 6.48k | return (decode_options(val, &ci->options)); |
215 | 6.25k | case 5: /* maxMsgSize */ |
216 | 6.25k | return (cbor_decode_uint64(val, &ci->maxmsgsiz)); |
217 | 6.15k | case 6: /* pinProtocols */ |
218 | 6.15k | return (decode_protocols(val, &ci->protocols)); |
219 | 5.76k | case 7: /* maxCredentialCountInList */ |
220 | 5.76k | return (cbor_decode_uint64(val, &ci->maxcredcntlst)); |
221 | 5.72k | case 8: /* maxCredentialIdLength */ |
222 | 5.72k | return (cbor_decode_uint64(val, &ci->maxcredidlen)); |
223 | 309 | case 14: /* fwVersion */ |
224 | 309 | return (cbor_decode_uint64(val, &ci->fwversion)); |
225 | 285 | case 15: /* maxCredBlobLen */ |
226 | 285 | return (cbor_decode_uint64(val, &ci->maxcredbloblen)); |
227 | 8.33k | default: /* ignore */ |
228 | 8.33k | fido_log_debug("%s: cbor type", __func__); |
229 | 8.33k | return (0); |
230 | 59.7k | } |
231 | 59.7k | } |
232 | | |
233 | | static int |
234 | | fido_dev_get_cbor_info_tx(fido_dev_t *dev) |
235 | 14.0k | { |
236 | 14.0k | const unsigned char cbor[] = { CTAP_CBOR_GETINFO }; |
237 | 14.0k | |
238 | 14.0k | fido_log_debug("%s: dev=%p", __func__, (void *)dev); |
239 | 14.0k | |
240 | 14.0k | if (fido_tx(dev, CTAP_CMD_CBOR, cbor, sizeof(cbor)) < 0) { |
241 | 139 | fido_log_debug("%s: fido_tx", __func__); |
242 | 139 | return (FIDO_ERR_TX); |
243 | 139 | } |
244 | 13.8k | |
245 | 13.8k | return (FIDO_OK); |
246 | 13.8k | } |
247 | | |
248 | | static int |
249 | | fido_dev_get_cbor_info_rx(fido_dev_t *dev, fido_cbor_info_t *ci, int ms) |
250 | 13.8k | { |
251 | 13.8k | unsigned char reply[FIDO_MAXMSG]; |
252 | 13.8k | int reply_len; |
253 | 13.8k | |
254 | 13.8k | fido_log_debug("%s: dev=%p, ci=%p, ms=%d", __func__, (void *)dev, |
255 | 13.8k | (void *)ci, ms); |
256 | 13.8k | |
257 | 13.8k | memset(ci, 0, sizeof(*ci)); |
258 | 13.8k | |
259 | 13.8k | if ((reply_len = fido_rx(dev, CTAP_CMD_CBOR, &reply, sizeof(reply), |
260 | 13.8k | ms)) < 0) { |
261 | 2.76k | fido_log_debug("%s: fido_rx", __func__); |
262 | 2.76k | return (FIDO_ERR_RX); |
263 | 2.76k | } |
264 | 11.1k | |
265 | 11.1k | return (cbor_parse_reply(reply, (size_t)reply_len, ci, |
266 | 11.1k | parse_reply_element)); |
267 | 11.1k | } |
268 | | |
269 | | int |
270 | | fido_dev_get_cbor_info_wait(fido_dev_t *dev, fido_cbor_info_t *ci, int ms) |
271 | 14.0k | { |
272 | 14.0k | int r; |
273 | 14.0k | |
274 | 14.0k | if ((r = fido_dev_get_cbor_info_tx(dev)) != FIDO_OK || |
275 | 14.0k | (r = fido_dev_get_cbor_info_rx(dev, ci, ms)) != FIDO_OK) |
276 | 14.0k | return (r); |
277 | 6.52k | |
278 | 6.52k | return (FIDO_OK); |
279 | 6.52k | } |
280 | | |
281 | | int |
282 | | fido_dev_get_cbor_info(fido_dev_t *dev, fido_cbor_info_t *ci) |
283 | 222 | { |
284 | 222 | return (fido_dev_get_cbor_info_wait(dev, ci, -1)); |
285 | 222 | } |
286 | | |
287 | | /* |
288 | | * get/set functions for fido_cbor_info_t; always at the end of the file |
289 | | */ |
290 | | |
291 | | fido_cbor_info_t * |
292 | | fido_cbor_info_new(void) |
293 | 14.0k | { |
294 | 14.0k | return (calloc(1, sizeof(fido_cbor_info_t))); |
295 | 14.0k | } |
296 | | |
297 | | static void |
298 | | free_str_array(fido_str_array_t *sa) |
299 | 28.0k | { |
300 | 63.0k | for (size_t i = 0; i < sa->len; i++) |
301 | 35.0k | free(sa->ptr[i]); |
302 | 28.0k | |
303 | 28.0k | free(sa->ptr); |
304 | 28.0k | sa->ptr = NULL; |
305 | 28.0k | sa->len = 0; |
306 | 28.0k | } |
307 | | |
308 | | static void |
309 | | free_opt_array(fido_opt_array_t *oa) |
310 | 14.0k | { |
311 | 46.9k | for (size_t i = 0; i < oa->len; i++) |
312 | 32.9k | free(oa->name[i]); |
313 | 14.0k | |
314 | 14.0k | free(oa->name); |
315 | 14.0k | free(oa->value); |
316 | 14.0k | oa->name = NULL; |
317 | 14.0k | oa->value = NULL; |
318 | 14.0k | } |
319 | | |
320 | | static void |
321 | | free_byte_array(fido_byte_array_t *ba) |
322 | 14.0k | { |
323 | 14.0k | free(ba->ptr); |
324 | 14.0k | |
325 | 14.0k | ba->ptr = NULL; |
326 | 14.0k | ba->len = 0; |
327 | 14.0k | } |
328 | | |
329 | | void |
330 | | fido_cbor_info_free(fido_cbor_info_t **ci_p) |
331 | 45.3k | { |
332 | 45.3k | fido_cbor_info_t *ci; |
333 | 45.3k | |
334 | 45.3k | if (ci_p == NULL || (ci = *ci_p) == NULL) |
335 | 45.3k | return; |
336 | 14.0k | |
337 | 14.0k | free_str_array(&ci->versions); |
338 | 14.0k | free_str_array(&ci->extensions); |
339 | 14.0k | free_opt_array(&ci->options); |
340 | 14.0k | free_byte_array(&ci->protocols); |
341 | 14.0k | free(ci); |
342 | 14.0k | |
343 | 14.0k | *ci_p = NULL; |
344 | 14.0k | } |
345 | | |
346 | | char ** |
347 | | fido_cbor_info_versions_ptr(const fido_cbor_info_t *ci) |
348 | 293 | { |
349 | 293 | return (ci->versions.ptr); |
350 | 293 | } |
351 | | |
352 | | size_t |
353 | | fido_cbor_info_versions_len(const fido_cbor_info_t *ci) |
354 | 515 | { |
355 | 515 | return (ci->versions.len); |
356 | 515 | } |
357 | | |
358 | | char ** |
359 | | fido_cbor_info_extensions_ptr(const fido_cbor_info_t *ci) |
360 | 6.63k | { |
361 | 6.63k | return (ci->extensions.ptr); |
362 | 6.63k | } |
363 | | |
364 | | size_t |
365 | | fido_cbor_info_extensions_len(const fido_cbor_info_t *ci) |
366 | 6.85k | { |
367 | 6.85k | return (ci->extensions.len); |
368 | 6.85k | } |
369 | | |
370 | | const unsigned char * |
371 | | fido_cbor_info_aaguid_ptr(const fido_cbor_info_t *ci) |
372 | 222 | { |
373 | 222 | return (ci->aaguid); |
374 | 222 | } |
375 | | |
376 | | size_t |
377 | | fido_cbor_info_aaguid_len(const fido_cbor_info_t *ci) |
378 | 222 | { |
379 | 222 | return (sizeof(ci->aaguid)); |
380 | 222 | } |
381 | | |
382 | | char ** |
383 | | fido_cbor_info_options_name_ptr(const fido_cbor_info_t *ci) |
384 | 6.62k | { |
385 | 6.62k | return (ci->options.name); |
386 | 6.62k | } |
387 | | |
388 | | const bool * |
389 | | fido_cbor_info_options_value_ptr(const fido_cbor_info_t *ci) |
390 | 6.62k | { |
391 | 6.62k | return (ci->options.value); |
392 | 6.62k | } |
393 | | |
394 | | size_t |
395 | | fido_cbor_info_options_len(const fido_cbor_info_t *ci) |
396 | 6.85k | { |
397 | 6.85k | return (ci->options.len); |
398 | 6.85k | } |
399 | | |
400 | | uint64_t |
401 | | fido_cbor_info_maxcredbloblen(const fido_cbor_info_t *ci) |
402 | 222 | { |
403 | 222 | return (ci->maxcredbloblen); |
404 | 222 | } |
405 | | |
406 | | uint64_t |
407 | | fido_cbor_info_maxmsgsiz(const fido_cbor_info_t *ci) |
408 | 6.73k | { |
409 | 6.73k | return (ci->maxmsgsiz); |
410 | 6.73k | } |
411 | | |
412 | | uint64_t |
413 | | fido_cbor_info_maxcredcntlst(const fido_cbor_info_t *ci) |
414 | 222 | { |
415 | 222 | return (ci->maxcredcntlst); |
416 | 222 | } |
417 | | |
418 | | uint64_t |
419 | | fido_cbor_info_maxcredidlen(const fido_cbor_info_t *ci) |
420 | 222 | { |
421 | 222 | return (ci->maxcredidlen); |
422 | 222 | } |
423 | | |
424 | | uint64_t |
425 | | fido_cbor_info_fwversion(const fido_cbor_info_t *ci) |
426 | 222 | { |
427 | 222 | return (ci->fwversion); |
428 | 222 | } |
429 | | |
430 | | const uint8_t * |
431 | | fido_cbor_info_protocols_ptr(const fido_cbor_info_t *ci) |
432 | 6.73k | { |
433 | 6.73k | return (ci->protocols.ptr); |
434 | 6.73k | } |
435 | | |
436 | | size_t |
437 | | fido_cbor_info_protocols_len(const fido_cbor_info_t *ci) |
438 | 6.73k | { |
439 | 6.73k | return (ci->protocols.len); |
440 | 6.73k | } |