|
1 /* asn1t.h */ |
|
2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL |
|
3 * project 2000. |
|
4 */ |
|
5 /* ==================================================================== |
|
6 * Copyright (c) 2000 The OpenSSL Project. All rights reserved. |
|
7 * |
|
8 * Redistribution and use in source and binary forms, with or without |
|
9 * modification, are permitted provided that the following conditions |
|
10 * are met: |
|
11 * |
|
12 * 1. Redistributions of source code must retain the above copyright |
|
13 * notice, this list of conditions and the following disclaimer. |
|
14 * |
|
15 * 2. Redistributions in binary form must reproduce the above copyright |
|
16 * notice, this list of conditions and the following disclaimer in |
|
17 * the documentation and/or other materials provided with the |
|
18 * distribution. |
|
19 * |
|
20 * 3. All advertising materials mentioning features or use of this |
|
21 * software must display the following acknowledgment: |
|
22 * "This product includes software developed by the OpenSSL Project |
|
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
|
24 * |
|
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
|
26 * endorse or promote products derived from this software without |
|
27 * prior written permission. For written permission, please contact |
|
28 * licensing@OpenSSL.org. |
|
29 * |
|
30 * 5. Products derived from this software may not be called "OpenSSL" |
|
31 * nor may "OpenSSL" appear in their names without prior written |
|
32 * permission of the OpenSSL Project. |
|
33 * |
|
34 * 6. Redistributions of any form whatsoever must retain the following |
|
35 * acknowledgment: |
|
36 * "This product includes software developed by the OpenSSL Project |
|
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
|
38 * |
|
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
|
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
|
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
|
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
|
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
|
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
|
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
|
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
|
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
|
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
|
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
|
50 * OF THE POSSIBILITY OF SUCH DAMAGE. |
|
51 * ==================================================================== |
|
52 * |
|
53 * This product includes cryptographic software written by Eric Young |
|
54 * (eay@cryptsoft.com). This product includes software written by Tim |
|
55 * Hudson (tjh@cryptsoft.com). |
|
56 * |
|
57 */ |
|
58 #ifndef HEADER_ASN1T_H |
|
59 #define HEADER_ASN1T_H |
|
60 |
|
61 #include <stddef.h> |
|
62 #include <openssl/e_os2.h> |
|
63 #include <openssl/asn1.h> |
|
64 |
|
65 #ifdef OPENSSL_BUILD_SHLIBCRYPTO |
|
66 # undef OPENSSL_EXTERN |
|
67 # define OPENSSL_EXTERN OPENSSL_EXPORT |
|
68 #endif |
|
69 |
|
70 /* ASN1 template defines, structures and functions */ |
|
71 |
|
72 #ifdef __cplusplus |
|
73 extern "C" { |
|
74 #endif |
|
75 |
|
76 |
|
77 #ifndef OPENSSL_EXPORT_VAR_AS_FUNCTION |
|
78 |
|
79 /* Macro to obtain ASN1_ADB pointer from a type (only used internally) */ |
|
80 #define ASN1_ADB_ptr(iptr) ((const ASN1_ADB *)(iptr)) |
|
81 |
|
82 |
|
83 /* Macros for start and end of ASN1_ITEM definition */ |
|
84 |
|
85 #define ASN1_ITEM_start(itname) \ |
|
86 OPENSSL_GLOBAL const ASN1_ITEM itname##_it = { |
|
87 |
|
88 #define ASN1_ITEM_end(itname) \ |
|
89 }; |
|
90 |
|
91 #else |
|
92 |
|
93 /* Macro to obtain ASN1_ADB pointer from a type (only used internally) */ |
|
94 #define ASN1_ADB_ptr(iptr) ((const ASN1_ADB *)(iptr())) |
|
95 |
|
96 |
|
97 /* Macros for start and end of ASN1_ITEM definition */ |
|
98 |
|
99 #define ASN1_ITEM_start(itname) \ |
|
100 const ASN1_ITEM * itname##_it(void) \ |
|
101 { \ |
|
102 static const ASN1_ITEM local_it = { \ |
|
103 |
|
104 #define ASN1_ITEM_end(itname) \ |
|
105 }; \ |
|
106 return &local_it; \ |
|
107 } |
|
108 |
|
109 #endif |
|
110 |
|
111 |
|
112 /* Macros to aid ASN1 template writing */ |
|
113 |
|
114 #define ASN1_ITEM_TEMPLATE(tname) \ |
|
115 const static ASN1_TEMPLATE tname##_item_tt |
|
116 |
|
117 #define ASN1_ITEM_TEMPLATE_END(tname) \ |
|
118 ;\ |
|
119 ASN1_ITEM_start(tname) \ |
|
120 ASN1_ITYPE_PRIMITIVE,\ |
|
121 -1,\ |
|
122 &tname##_item_tt,\ |
|
123 0,\ |
|
124 NULL,\ |
|
125 0,\ |
|
126 #tname \ |
|
127 ASN1_ITEM_end(tname) |
|
128 |
|
129 |
|
130 /* This is a ASN1 type which just embeds a template */ |
|
131 |
|
132 /* This pair helps declare a SEQUENCE. We can do: |
|
133 * |
|
134 * ASN1_SEQUENCE(stname) = { |
|
135 * ... SEQUENCE components ... |
|
136 * } ASN1_SEQUENCE_END(stname) |
|
137 * |
|
138 * This will produce an ASN1_ITEM called stname_it |
|
139 * for a structure called stname. |
|
140 * |
|
141 * If you want the same structure but a different |
|
142 * name then use: |
|
143 * |
|
144 * ASN1_SEQUENCE(itname) = { |
|
145 * ... SEQUENCE components ... |
|
146 * } ASN1_SEQUENCE_END_name(stname, itname) |
|
147 * |
|
148 * This will create an item called itname_it using |
|
149 * a structure called stname. |
|
150 */ |
|
151 |
|
152 #define ASN1_SEQUENCE(tname) \ |
|
153 const static ASN1_TEMPLATE tname##_seq_tt[] |
|
154 |
|
155 #define ASN1_SEQUENCE_END(stname) ASN1_SEQUENCE_END_name(stname, stname) |
|
156 |
|
157 #define ASN1_SEQUENCE_END_name(stname, tname) \ |
|
158 ;\ |
|
159 ASN1_ITEM_start(tname) \ |
|
160 ASN1_ITYPE_SEQUENCE,\ |
|
161 V_ASN1_SEQUENCE,\ |
|
162 tname##_seq_tt,\ |
|
163 sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\ |
|
164 NULL,\ |
|
165 sizeof(stname),\ |
|
166 #stname \ |
|
167 ASN1_ITEM_end(tname) |
|
168 |
|
169 #define ASN1_SEQUENCE_cb(tname, cb) \ |
|
170 const static ASN1_AUX tname##_aux = {NULL, 0, 0, 0, cb, 0}; \ |
|
171 ASN1_SEQUENCE(tname) |
|
172 |
|
173 #define ASN1_BROKEN_SEQUENCE(tname) \ |
|
174 const static ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_BROKEN, 0, 0, 0, 0}; \ |
|
175 ASN1_SEQUENCE(tname) |
|
176 |
|
177 #define ASN1_SEQUENCE_ref(tname, cb, lck) \ |
|
178 const static ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_REFCOUNT, offsetof(tname, references), lck, cb, 0}; \ |
|
179 ASN1_SEQUENCE(tname) |
|
180 |
|
181 #define ASN1_SEQUENCE_enc(tname, enc, cb) \ |
|
182 const static ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_ENCODING, 0, 0, cb, offsetof(tname, enc)}; \ |
|
183 ASN1_SEQUENCE(tname) |
|
184 |
|
185 #define ASN1_BROKEN_SEQUENCE_END(stname) ASN1_SEQUENCE_END_ref(stname, stname) |
|
186 |
|
187 #define ASN1_SEQUENCE_END_enc(stname, tname) ASN1_SEQUENCE_END_ref(stname, tname) |
|
188 |
|
189 #define ASN1_SEQUENCE_END_cb(stname, tname) ASN1_SEQUENCE_END_ref(stname, tname) |
|
190 |
|
191 #define ASN1_SEQUENCE_END_ref(stname, tname) \ |
|
192 ;\ |
|
193 ASN1_ITEM_start(tname) \ |
|
194 ASN1_ITYPE_SEQUENCE,\ |
|
195 V_ASN1_SEQUENCE,\ |
|
196 tname##_seq_tt,\ |
|
197 sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\ |
|
198 &tname##_aux,\ |
|
199 sizeof(stname),\ |
|
200 #stname \ |
|
201 ASN1_ITEM_end(tname) |
|
202 |
|
203 |
|
204 /* This pair helps declare a CHOICE type. We can do: |
|
205 * |
|
206 * ASN1_CHOICE(chname) = { |
|
207 * ... CHOICE options ... |
|
208 * ASN1_CHOICE_END(chname) |
|
209 * |
|
210 * This will produce an ASN1_ITEM called chname_it |
|
211 * for a structure called chname. The structure |
|
212 * definition must look like this: |
|
213 * typedef struct { |
|
214 * int type; |
|
215 * union { |
|
216 * ASN1_SOMETHING *opt1; |
|
217 * ASN1_SOMEOTHER *opt2; |
|
218 * } value; |
|
219 * } chname; |
|
220 * |
|
221 * the name of the selector must be 'type'. |
|
222 * to use an alternative selector name use the |
|
223 * ASN1_CHOICE_END_selector() version. |
|
224 */ |
|
225 |
|
226 #define ASN1_CHOICE(tname) \ |
|
227 const static ASN1_TEMPLATE tname##_ch_tt[] |
|
228 |
|
229 #define ASN1_CHOICE_cb(tname, cb) \ |
|
230 const static ASN1_AUX tname##_aux = {NULL, 0, 0, 0, cb, 0}; \ |
|
231 ASN1_CHOICE(tname) |
|
232 |
|
233 #define ASN1_CHOICE_END(stname) ASN1_CHOICE_END_name(stname, stname) |
|
234 |
|
235 #define ASN1_CHOICE_END_name(stname, tname) ASN1_CHOICE_END_selector(stname, tname, type) |
|
236 |
|
237 #define ASN1_CHOICE_END_selector(stname, tname, selname) \ |
|
238 ;\ |
|
239 ASN1_ITEM_start(tname) \ |
|
240 ASN1_ITYPE_CHOICE,\ |
|
241 offsetof(stname,selname) ,\ |
|
242 tname##_ch_tt,\ |
|
243 sizeof(tname##_ch_tt) / sizeof(ASN1_TEMPLATE),\ |
|
244 NULL,\ |
|
245 sizeof(stname),\ |
|
246 #stname \ |
|
247 ASN1_ITEM_end(tname) |
|
248 |
|
249 #define ASN1_CHOICE_END_cb(stname, tname, selname) \ |
|
250 ;\ |
|
251 ASN1_ITEM_start(tname) \ |
|
252 ASN1_ITYPE_CHOICE,\ |
|
253 offsetof(stname,selname) ,\ |
|
254 tname##_ch_tt,\ |
|
255 sizeof(tname##_ch_tt) / sizeof(ASN1_TEMPLATE),\ |
|
256 &tname##_aux,\ |
|
257 sizeof(stname),\ |
|
258 #stname \ |
|
259 ASN1_ITEM_end(tname) |
|
260 |
|
261 /* This helps with the template wrapper form of ASN1_ITEM */ |
|
262 |
|
263 #define ASN1_EX_TEMPLATE_TYPE(flags, tag, name, type) { \ |
|
264 (flags), (tag), 0,\ |
|
265 #name, ASN1_ITEM_ref(type) } |
|
266 |
|
267 /* These help with SEQUENCE or CHOICE components */ |
|
268 |
|
269 /* used to declare other types */ |
|
270 |
|
271 #define ASN1_EX_TYPE(flags, tag, stname, field, type) { \ |
|
272 (flags), (tag), offsetof(stname, field),\ |
|
273 #field, ASN1_ITEM_ref(type) } |
|
274 |
|
275 /* used when the structure is combined with the parent */ |
|
276 |
|
277 #define ASN1_EX_COMBINE(flags, tag, type) { \ |
|
278 (flags)|ASN1_TFLG_COMBINE, (tag), 0, NULL, ASN1_ITEM_ref(type) } |
|
279 |
|
280 /* implicit and explicit helper macros */ |
|
281 |
|
282 #define ASN1_IMP_EX(stname, field, type, tag, ex) \ |
|
283 ASN1_EX_TYPE(ASN1_TFLG_IMPLICIT | ex, tag, stname, field, type) |
|
284 |
|
285 #define ASN1_EXP_EX(stname, field, type, tag, ex) \ |
|
286 ASN1_EX_TYPE(ASN1_TFLG_EXPLICIT | ex, tag, stname, field, type) |
|
287 |
|
288 /* Any defined by macros: the field used is in the table itself */ |
|
289 |
|
290 #ifndef OPENSSL_EXPORT_VAR_AS_FUNCTION |
|
291 #define ASN1_ADB_OBJECT(tblname) { ASN1_TFLG_ADB_OID, -1, 0, #tblname, (const ASN1_ITEM *)&(tblname##_adb) } |
|
292 #define ASN1_ADB_INTEGER(tblname) { ASN1_TFLG_ADB_INT, -1, 0, #tblname, (const ASN1_ITEM *)&(tblname##_adb) } |
|
293 #else |
|
294 #define ASN1_ADB_OBJECT(tblname) { ASN1_TFLG_ADB_OID, -1, 0, #tblname, tblname##_adb } |
|
295 #define ASN1_ADB_INTEGER(tblname) { ASN1_TFLG_ADB_INT, -1, 0, #tblname, tblname##_adb } |
|
296 #endif |
|
297 /* Plain simple type */ |
|
298 #define ASN1_SIMPLE(stname, field, type) ASN1_EX_TYPE(0,0, stname, field, type) |
|
299 |
|
300 /* OPTIONAL simple type */ |
|
301 #define ASN1_OPT(stname, field, type) ASN1_EX_TYPE(ASN1_TFLG_OPTIONAL, 0, stname, field, type) |
|
302 |
|
303 /* IMPLICIT tagged simple type */ |
|
304 #define ASN1_IMP(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, 0) |
|
305 |
|
306 /* IMPLICIT tagged OPTIONAL simple type */ |
|
307 #define ASN1_IMP_OPT(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL) |
|
308 |
|
309 /* Same as above but EXPLICIT */ |
|
310 |
|
311 #define ASN1_EXP(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, 0) |
|
312 #define ASN1_EXP_OPT(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL) |
|
313 |
|
314 /* SEQUENCE OF type */ |
|
315 #define ASN1_SEQUENCE_OF(stname, field, type) \ |
|
316 ASN1_EX_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, stname, field, type) |
|
317 |
|
318 /* OPTIONAL SEQUENCE OF */ |
|
319 #define ASN1_SEQUENCE_OF_OPT(stname, field, type) \ |
|
320 ASN1_EX_TYPE(ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL, 0, stname, field, type) |
|
321 |
|
322 /* Same as above but for SET OF */ |
|
323 |
|
324 #define ASN1_SET_OF(stname, field, type) \ |
|
325 ASN1_EX_TYPE(ASN1_TFLG_SET_OF, 0, stname, field, type) |
|
326 |
|
327 #define ASN1_SET_OF_OPT(stname, field, type) \ |
|
328 ASN1_EX_TYPE(ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL, 0, stname, field, type) |
|
329 |
|
330 /* Finally compound types of SEQUENCE, SET, IMPLICIT, EXPLICIT and OPTIONAL */ |
|
331 |
|
332 #define ASN1_IMP_SET_OF(stname, field, type, tag) \ |
|
333 ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF) |
|
334 |
|
335 #define ASN1_EXP_SET_OF(stname, field, type, tag) \ |
|
336 ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF) |
|
337 |
|
338 #define ASN1_IMP_SET_OF_OPT(stname, field, type, tag) \ |
|
339 ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL) |
|
340 |
|
341 #define ASN1_EXP_SET_OF_OPT(stname, field, type, tag) \ |
|
342 ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL) |
|
343 |
|
344 #define ASN1_IMP_SEQUENCE_OF(stname, field, type, tag) \ |
|
345 ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF) |
|
346 |
|
347 #define ASN1_IMP_SEQUENCE_OF_OPT(stname, field, type, tag) \ |
|
348 ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL) |
|
349 |
|
350 #define ASN1_EXP_SEQUENCE_OF(stname, field, type, tag) \ |
|
351 ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF) |
|
352 |
|
353 #define ASN1_EXP_SEQUENCE_OF_OPT(stname, field, type, tag) \ |
|
354 ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL) |
|
355 |
|
356 /* Macros for the ASN1_ADB structure */ |
|
357 |
|
358 #define ASN1_ADB(name) \ |
|
359 const static ASN1_ADB_TABLE name##_adbtbl[] |
|
360 |
|
361 #ifndef OPENSSL_EXPORT_VAR_AS_FUNCTION |
|
362 |
|
363 #define ASN1_ADB_END(name, flags, field, app_table, def, none) \ |
|
364 ;\ |
|
365 const static ASN1_ADB name##_adb = {\ |
|
366 flags,\ |
|
367 offsetof(name, field),\ |
|
368 app_table,\ |
|
369 name##_adbtbl,\ |
|
370 sizeof(name##_adbtbl) / sizeof(ASN1_ADB_TABLE),\ |
|
371 def,\ |
|
372 none\ |
|
373 } |
|
374 |
|
375 #else |
|
376 |
|
377 #define ASN1_ADB_END(name, flags, field, app_table, def, none) \ |
|
378 ;\ |
|
379 const static ASN1_ITEM *name##_adb(void) \ |
|
380 { \ |
|
381 const static ASN1_ADB internal_adb = \ |
|
382 {\ |
|
383 flags,\ |
|
384 offsetof(name, field),\ |
|
385 app_table,\ |
|
386 name##_adbtbl,\ |
|
387 sizeof(name##_adbtbl) / sizeof(ASN1_ADB_TABLE),\ |
|
388 def,\ |
|
389 none\ |
|
390 }; \ |
|
391 return (const ASN1_ITEM *) &internal_adb; \ |
|
392 } \ |
|
393 void dummy_function(void) |
|
394 |
|
395 #endif |
|
396 |
|
397 #define ADB_ENTRY(val, template) {val, template} |
|
398 |
|
399 #define ASN1_ADB_TEMPLATE(name) \ |
|
400 const static ASN1_TEMPLATE name##_tt |
|
401 |
|
402 /* This is the ASN1 template structure that defines |
|
403 * a wrapper round the actual type. It determines the |
|
404 * actual position of the field in the value structure, |
|
405 * various flags such as OPTIONAL and the field name. |
|
406 */ |
|
407 |
|
408 struct ASN1_TEMPLATE_st { |
|
409 unsigned long flags; /* Various flags */ |
|
410 long tag; /* tag, not used if no tagging */ |
|
411 unsigned long offset; /* Offset of this field in structure */ |
|
412 #ifndef NO_ASN1_FIELD_NAMES |
|
413 char *field_name; /* Field name */ |
|
414 #endif |
|
415 ASN1_ITEM_EXP *item; /* Relevant ASN1_ITEM or ASN1_ADB */ |
|
416 }; |
|
417 |
|
418 /* Macro to extract ASN1_ITEM and ASN1_ADB pointer from ASN1_TEMPLATE */ |
|
419 |
|
420 #define ASN1_TEMPLATE_item(t) (t->item_ptr) |
|
421 #define ASN1_TEMPLATE_adb(t) (t->item_ptr) |
|
422 |
|
423 typedef struct ASN1_ADB_TABLE_st ASN1_ADB_TABLE; |
|
424 typedef struct ASN1_ADB_st ASN1_ADB; |
|
425 |
|
426 struct ASN1_ADB_st { |
|
427 unsigned long flags; /* Various flags */ |
|
428 unsigned long offset; /* Offset of selector field */ |
|
429 STACK_OF(ASN1_ADB_TABLE) **app_items; /* Application defined items */ |
|
430 const ASN1_ADB_TABLE *tbl; /* Table of possible types */ |
|
431 long tblcount; /* Number of entries in tbl */ |
|
432 const ASN1_TEMPLATE *default_tt; /* Type to use if no match */ |
|
433 const ASN1_TEMPLATE *null_tt; /* Type to use if selector is NULL */ |
|
434 }; |
|
435 |
|
436 struct ASN1_ADB_TABLE_st { |
|
437 long value; /* NID for an object or value for an int */ |
|
438 const ASN1_TEMPLATE tt; /* item for this value */ |
|
439 }; |
|
440 |
|
441 /* template flags */ |
|
442 |
|
443 /* Field is optional */ |
|
444 #define ASN1_TFLG_OPTIONAL (0x1) |
|
445 |
|
446 /* Field is a SET OF */ |
|
447 #define ASN1_TFLG_SET_OF (0x1 << 1) |
|
448 |
|
449 /* Field is a SEQUENCE OF */ |
|
450 #define ASN1_TFLG_SEQUENCE_OF (0x2 << 1) |
|
451 |
|
452 /* Special case: this refers to a SET OF that |
|
453 * will be sorted into DER order when encoded *and* |
|
454 * the corresponding STACK will be modified to match |
|
455 * the new order. |
|
456 */ |
|
457 #define ASN1_TFLG_SET_ORDER (0x3 << 1) |
|
458 |
|
459 /* Mask for SET OF or SEQUENCE OF */ |
|
460 #define ASN1_TFLG_SK_MASK (0x3 << 1) |
|
461 |
|
462 /* These flags mean the tag should be taken from the |
|
463 * tag field. If EXPLICIT then the underlying type |
|
464 * is used for the inner tag. |
|
465 */ |
|
466 |
|
467 /* IMPLICIT tagging */ |
|
468 #define ASN1_TFLG_IMPTAG (0x1 << 3) |
|
469 |
|
470 |
|
471 /* EXPLICIT tagging, inner tag from underlying type */ |
|
472 #define ASN1_TFLG_EXPTAG (0x2 << 3) |
|
473 |
|
474 #define ASN1_TFLG_TAG_MASK (0x3 << 3) |
|
475 |
|
476 /* context specific IMPLICIT */ |
|
477 #define ASN1_TFLG_IMPLICIT ASN1_TFLG_IMPTAG|ASN1_TFLG_CONTEXT |
|
478 |
|
479 /* context specific EXPLICIT */ |
|
480 #define ASN1_TFLG_EXPLICIT ASN1_TFLG_EXPTAG|ASN1_TFLG_CONTEXT |
|
481 |
|
482 /* If tagging is in force these determine the |
|
483 * type of tag to use. Otherwise the tag is |
|
484 * determined by the underlying type. These |
|
485 * values reflect the actual octet format. |
|
486 */ |
|
487 |
|
488 /* Universal tag */ |
|
489 #define ASN1_TFLG_UNIVERSAL (0x0<<6) |
|
490 /* Application tag */ |
|
491 #define ASN1_TFLG_APPLICATION (0x1<<6) |
|
492 /* Context specific tag */ |
|
493 #define ASN1_TFLG_CONTEXT (0x2<<6) |
|
494 /* Private tag */ |
|
495 #define ASN1_TFLG_PRIVATE (0x3<<6) |
|
496 |
|
497 #define ASN1_TFLG_TAG_CLASS (0x3<<6) |
|
498 |
|
499 /* These are for ANY DEFINED BY type. In this case |
|
500 * the 'item' field points to an ASN1_ADB structure |
|
501 * which contains a table of values to decode the |
|
502 * relevant type |
|
503 */ |
|
504 |
|
505 #define ASN1_TFLG_ADB_MASK (0x3<<8) |
|
506 |
|
507 #define ASN1_TFLG_ADB_OID (0x1<<8) |
|
508 |
|
509 #define ASN1_TFLG_ADB_INT (0x1<<9) |
|
510 |
|
511 /* This flag means a parent structure is passed |
|
512 * instead of the field: this is useful is a |
|
513 * SEQUENCE is being combined with a CHOICE for |
|
514 * example. Since this means the structure and |
|
515 * item name will differ we need to use the |
|
516 * ASN1_CHOICE_END_name() macro for example. |
|
517 */ |
|
518 |
|
519 #define ASN1_TFLG_COMBINE (0x1<<10) |
|
520 |
|
521 /* This is the actual ASN1 item itself */ |
|
522 |
|
523 struct ASN1_ITEM_st { |
|
524 char itype; /* The item type, primitive, SEQUENCE, CHOICE or extern */ |
|
525 long utype; /* underlying type */ |
|
526 const ASN1_TEMPLATE *templates; /* If SEQUENCE or CHOICE this contains the contents */ |
|
527 long tcount; /* Number of templates if SEQUENCE or CHOICE */ |
|
528 const void *funcs; /* functions that handle this type */ |
|
529 long size; /* Structure size (usually)*/ |
|
530 #ifndef NO_ASN1_FIELD_NAMES |
|
531 const char *sname; /* Structure name */ |
|
532 #endif |
|
533 }; |
|
534 |
|
535 /* These are values for the itype field and |
|
536 * determine how the type is interpreted. |
|
537 * |
|
538 * For PRIMITIVE types the underlying type |
|
539 * determines the behaviour if items is NULL. |
|
540 * |
|
541 * Otherwise templates must contain a single |
|
542 * template and the type is treated in the |
|
543 * same way as the type specified in the template. |
|
544 * |
|
545 * For SEQUENCE types the templates field points |
|
546 * to the members, the size field is the |
|
547 * structure size. |
|
548 * |
|
549 * For CHOICE types the templates field points |
|
550 * to each possible member (typically a union) |
|
551 * and the 'size' field is the offset of the |
|
552 * selector. |
|
553 * |
|
554 * The 'funcs' field is used for application |
|
555 * specific functions. |
|
556 * |
|
557 * For COMPAT types the funcs field gives a |
|
558 * set of functions that handle this type, this |
|
559 * supports the old d2i, i2d convention. |
|
560 * |
|
561 * The EXTERN type uses a new style d2i/i2d. |
|
562 * The new style should be used where possible |
|
563 * because it avoids things like the d2i IMPLICIT |
|
564 * hack. |
|
565 * |
|
566 * MSTRING is a multiple string type, it is used |
|
567 * for a CHOICE of character strings where the |
|
568 * actual strings all occupy an ASN1_STRING |
|
569 * structure. In this case the 'utype' field |
|
570 * has a special meaning, it is used as a mask |
|
571 * of acceptable types using the B_ASN1 constants. |
|
572 * |
|
573 */ |
|
574 |
|
575 #define ASN1_ITYPE_PRIMITIVE 0x0 |
|
576 |
|
577 #define ASN1_ITYPE_SEQUENCE 0x1 |
|
578 |
|
579 #define ASN1_ITYPE_CHOICE 0x2 |
|
580 |
|
581 #define ASN1_ITYPE_COMPAT 0x3 |
|
582 |
|
583 #define ASN1_ITYPE_EXTERN 0x4 |
|
584 |
|
585 #define ASN1_ITYPE_MSTRING 0x5 |
|
586 |
|
587 /* Cache for ASN1 tag and length, so we |
|
588 * don't keep re-reading it for things |
|
589 * like CHOICE |
|
590 */ |
|
591 |
|
592 struct ASN1_TLC_st{ |
|
593 char valid; /* Values below are valid */ |
|
594 int ret; /* return value */ |
|
595 long plen; /* length */ |
|
596 int ptag; /* class value */ |
|
597 int pclass; /* class value */ |
|
598 int hdrlen; /* header length */ |
|
599 }; |
|
600 |
|
601 /* Typedefs for ASN1 function pointers */ |
|
602 |
|
603 typedef ASN1_VALUE * ASN1_new_func(void); |
|
604 typedef void ASN1_free_func(ASN1_VALUE *a); |
|
605 typedef ASN1_VALUE * ASN1_d2i_func(ASN1_VALUE **a, unsigned char ** in, long length); |
|
606 typedef int ASN1_i2d_func(ASN1_VALUE * a, unsigned char **in); |
|
607 |
|
608 typedef int ASN1_ex_d2i(ASN1_VALUE **pval, unsigned char **in, long len, const ASN1_ITEM *it, |
|
609 int tag, int aclass, char opt, ASN1_TLC *ctx); |
|
610 |
|
611 typedef int ASN1_ex_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass); |
|
612 typedef int ASN1_ex_new_func(ASN1_VALUE **pval, const ASN1_ITEM *it); |
|
613 typedef void ASN1_ex_free_func(ASN1_VALUE **pval, const ASN1_ITEM *it); |
|
614 |
|
615 typedef int ASN1_primitive_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it); |
|
616 typedef int ASN1_primitive_c2i(ASN1_VALUE **pval, unsigned char *cont, int len, int utype, char *free_cont, const ASN1_ITEM *it); |
|
617 |
|
618 typedef struct ASN1_COMPAT_FUNCS_st { |
|
619 ASN1_new_func *asn1_new; |
|
620 ASN1_free_func *asn1_free; |
|
621 ASN1_d2i_func *asn1_d2i; |
|
622 ASN1_i2d_func *asn1_i2d; |
|
623 } ASN1_COMPAT_FUNCS; |
|
624 |
|
625 typedef struct ASN1_EXTERN_FUNCS_st { |
|
626 void *app_data; |
|
627 ASN1_ex_new_func *asn1_ex_new; |
|
628 ASN1_ex_free_func *asn1_ex_free; |
|
629 ASN1_ex_free_func *asn1_ex_clear; |
|
630 ASN1_ex_d2i *asn1_ex_d2i; |
|
631 ASN1_ex_i2d *asn1_ex_i2d; |
|
632 } ASN1_EXTERN_FUNCS; |
|
633 |
|
634 typedef struct ASN1_PRIMITIVE_FUNCS_st { |
|
635 void *app_data; |
|
636 unsigned long flags; |
|
637 ASN1_ex_new_func *prim_new; |
|
638 ASN1_ex_free_func *prim_free; |
|
639 ASN1_ex_free_func *prim_clear; |
|
640 ASN1_primitive_c2i *prim_c2i; |
|
641 ASN1_primitive_i2c *prim_i2c; |
|
642 } ASN1_PRIMITIVE_FUNCS; |
|
643 |
|
644 /* This is the ASN1_AUX structure: it handles various |
|
645 * miscellaneous requirements. For example the use of |
|
646 * reference counts and an informational callback. |
|
647 * |
|
648 * The "informational callback" is called at various |
|
649 * points during the ASN1 encoding and decoding. It can |
|
650 * be used to provide minor customisation of the structures |
|
651 * used. This is most useful where the supplied routines |
|
652 * *almost* do the right thing but need some extra help |
|
653 * at a few points. If the callback returns zero then |
|
654 * it is assumed a fatal error has occurred and the |
|
655 * main operation should be abandoned. |
|
656 * |
|
657 * If major changes in the default behaviour are required |
|
658 * then an external type is more appropriate. |
|
659 */ |
|
660 |
|
661 typedef int ASN1_aux_cb(int operation, ASN1_VALUE **in, const ASN1_ITEM *it); |
|
662 |
|
663 typedef struct ASN1_AUX_st { |
|
664 void *app_data; |
|
665 int flags; |
|
666 int ref_offset; /* Offset of reference value */ |
|
667 int ref_lock; /* Lock type to use */ |
|
668 ASN1_aux_cb *asn1_cb; |
|
669 int enc_offset; /* Offset of ASN1_ENCODING structure */ |
|
670 } ASN1_AUX; |
|
671 |
|
672 /* Flags in ASN1_AUX */ |
|
673 |
|
674 /* Use a reference count */ |
|
675 #define ASN1_AFLG_REFCOUNT 1 |
|
676 /* Save the encoding of structure (useful for signatures) */ |
|
677 #define ASN1_AFLG_ENCODING 2 |
|
678 /* The Sequence length is invalid */ |
|
679 #define ASN1_AFLG_BROKEN 4 |
|
680 |
|
681 /* operation values for asn1_cb */ |
|
682 |
|
683 #define ASN1_OP_NEW_PRE 0 |
|
684 #define ASN1_OP_NEW_POST 1 |
|
685 #define ASN1_OP_FREE_PRE 2 |
|
686 #define ASN1_OP_FREE_POST 3 |
|
687 #define ASN1_OP_D2I_PRE 4 |
|
688 #define ASN1_OP_D2I_POST 5 |
|
689 #define ASN1_OP_I2D_PRE 6 |
|
690 #define ASN1_OP_I2D_POST 7 |
|
691 |
|
692 /* Macro to implement a primitive type */ |
|
693 #define IMPLEMENT_ASN1_TYPE(stname) IMPLEMENT_ASN1_TYPE_ex(stname, stname, 0) |
|
694 #define IMPLEMENT_ASN1_TYPE_ex(itname, vname, ex) \ |
|
695 ASN1_ITEM_start(itname) \ |
|
696 ASN1_ITYPE_PRIMITIVE, V_##vname, NULL, 0, NULL, ex, #itname \ |
|
697 ASN1_ITEM_end(itname) |
|
698 |
|
699 /* Macro to implement a multi string type */ |
|
700 #define IMPLEMENT_ASN1_MSTRING(itname, mask) \ |
|
701 ASN1_ITEM_start(itname) \ |
|
702 ASN1_ITYPE_MSTRING, mask, NULL, 0, NULL, sizeof(ASN1_STRING), #itname \ |
|
703 ASN1_ITEM_end(itname) |
|
704 |
|
705 /* Macro to implement an ASN1_ITEM in terms of old style funcs */ |
|
706 |
|
707 #define IMPLEMENT_COMPAT_ASN1(sname) IMPLEMENT_COMPAT_ASN1_type(sname, V_ASN1_SEQUENCE) |
|
708 |
|
709 #define IMPLEMENT_COMPAT_ASN1_type(sname, tag) \ |
|
710 static const ASN1_COMPAT_FUNCS sname##_ff = { \ |
|
711 (ASN1_new_func *)sname##_new, \ |
|
712 (ASN1_free_func *)sname##_free, \ |
|
713 (ASN1_d2i_func *)d2i_##sname, \ |
|
714 (ASN1_i2d_func *)i2d_##sname, \ |
|
715 }; \ |
|
716 ASN1_ITEM_start(sname) \ |
|
717 ASN1_ITYPE_COMPAT, \ |
|
718 tag, \ |
|
719 NULL, \ |
|
720 0, \ |
|
721 &sname##_ff, \ |
|
722 0, \ |
|
723 #sname \ |
|
724 ASN1_ITEM_end(sname) |
|
725 |
|
726 #define IMPLEMENT_EXTERN_ASN1(sname, tag, fptrs) \ |
|
727 ASN1_ITEM_start(sname) \ |
|
728 ASN1_ITYPE_EXTERN, \ |
|
729 tag, \ |
|
730 NULL, \ |
|
731 0, \ |
|
732 &fptrs, \ |
|
733 0, \ |
|
734 #sname \ |
|
735 ASN1_ITEM_end(sname) |
|
736 |
|
737 /* Macro to implement standard functions in terms of ASN1_ITEM structures */ |
|
738 |
|
739 #define IMPLEMENT_ASN1_FUNCTIONS(stname) IMPLEMENT_ASN1_FUNCTIONS_fname(stname, stname, stname) |
|
740 |
|
741 #define IMPLEMENT_ASN1_FUNCTIONS_name(stname, itname) IMPLEMENT_ASN1_FUNCTIONS_fname(stname, itname, itname) |
|
742 |
|
743 #define IMPLEMENT_ASN1_FUNCTIONS_ENCODE_name(stname, itname) \ |
|
744 IMPLEMENT_ASN1_FUNCTIONS_ENCODE_fname(stname, itname, itname) |
|
745 |
|
746 #define IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname) \ |
|
747 stname *fname##_new(void) \ |
|
748 { \ |
|
749 return (stname *)ASN1_item_new(ASN1_ITEM_rptr(itname)); \ |
|
750 } \ |
|
751 void fname##_free(stname *a) \ |
|
752 { \ |
|
753 ASN1_item_free((ASN1_VALUE *)a, ASN1_ITEM_rptr(itname)); \ |
|
754 } |
|
755 |
|
756 #define IMPLEMENT_ASN1_FUNCTIONS_fname(stname, itname, fname) \ |
|
757 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(stname, itname, fname) \ |
|
758 IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname) |
|
759 |
|
760 #define IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(stname, itname, fname) \ |
|
761 stname *d2i_##fname(stname **a, unsigned char **in, long len) \ |
|
762 { \ |
|
763 return (stname *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, ASN1_ITEM_rptr(itname));\ |
|
764 } \ |
|
765 int i2d_##fname(stname *a, unsigned char **out) \ |
|
766 { \ |
|
767 return ASN1_item_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(itname));\ |
|
768 } |
|
769 |
|
770 /* This includes evil casts to remove const: they will go away when full |
|
771 * ASN1 constification is done. |
|
772 */ |
|
773 #define IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(stname, itname, fname) \ |
|
774 stname *d2i_##fname(stname **a, const unsigned char **in, long len) \ |
|
775 { \ |
|
776 return (stname *)ASN1_item_d2i((ASN1_VALUE **)a, (unsigned char **)in, len, ASN1_ITEM_rptr(itname));\ |
|
777 } \ |
|
778 int i2d_##fname(const stname *a, unsigned char **out) \ |
|
779 { \ |
|
780 return ASN1_item_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(itname));\ |
|
781 } |
|
782 |
|
783 #define IMPLEMENT_ASN1_DUP_FUNCTION(stname) \ |
|
784 stname * stname##_dup(stname *x) \ |
|
785 { \ |
|
786 return ASN1_item_dup(ASN1_ITEM_rptr(stname), x); \ |
|
787 } |
|
788 |
|
789 #define IMPLEMENT_ASN1_FUNCTIONS_const(name) \ |
|
790 IMPLEMENT_ASN1_FUNCTIONS_const_fname(name, name, name) |
|
791 |
|
792 #define IMPLEMENT_ASN1_FUNCTIONS_const_fname(stname, itname, fname) \ |
|
793 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(stname, itname, fname) \ |
|
794 IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname) |
|
795 |
|
796 /* external definitions for primitive types */ |
|
797 |
|
798 DECLARE_ASN1_ITEM(ASN1_BOOLEAN) |
|
799 DECLARE_ASN1_ITEM(ASN1_TBOOLEAN) |
|
800 DECLARE_ASN1_ITEM(ASN1_FBOOLEAN) |
|
801 DECLARE_ASN1_ITEM(ASN1_ANY) |
|
802 DECLARE_ASN1_ITEM(ASN1_SEQUENCE) |
|
803 DECLARE_ASN1_ITEM(CBIGNUM) |
|
804 DECLARE_ASN1_ITEM(BIGNUM) |
|
805 DECLARE_ASN1_ITEM(LONG) |
|
806 DECLARE_ASN1_ITEM(ZLONG) |
|
807 |
|
808 DECLARE_STACK_OF(ASN1_VALUE) |
|
809 |
|
810 /* Functions used internally by the ASN1 code */ |
|
811 |
|
812 int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it); |
|
813 void ASN1_item_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it); |
|
814 int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt); |
|
815 int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it); |
|
816 |
|
817 void ASN1_template_free(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt); |
|
818 int ASN1_template_d2i(ASN1_VALUE **pval, unsigned char **in, long len, const ASN1_TEMPLATE *tt); |
|
819 int ASN1_item_ex_d2i(ASN1_VALUE **pval, unsigned char **in, long len, const ASN1_ITEM *it, |
|
820 int tag, int aclass, char opt, ASN1_TLC *ctx); |
|
821 |
|
822 int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass); |
|
823 int ASN1_template_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_TEMPLATE *tt); |
|
824 void ASN1_primitive_free(ASN1_VALUE **pval, const ASN1_ITEM *it); |
|
825 |
|
826 int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it); |
|
827 int asn1_ex_c2i(ASN1_VALUE **pval, unsigned char *cont, int len, int utype, char *free_cont, const ASN1_ITEM *it); |
|
828 |
|
829 int asn1_get_choice_selector(ASN1_VALUE **pval, const ASN1_ITEM *it); |
|
830 int asn1_set_choice_selector(ASN1_VALUE **pval, int value, const ASN1_ITEM *it); |
|
831 |
|
832 ASN1_VALUE ** asn1_get_field_ptr(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt); |
|
833 |
|
834 const ASN1_TEMPLATE *asn1_do_adb(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt, int nullerr); |
|
835 |
|
836 int asn1_do_lock(ASN1_VALUE **pval, int op, const ASN1_ITEM *it); |
|
837 |
|
838 void asn1_enc_init(ASN1_VALUE **pval, const ASN1_ITEM *it); |
|
839 void asn1_enc_free(ASN1_VALUE **pval, const ASN1_ITEM *it); |
|
840 int asn1_enc_restore(int *len, unsigned char **out, ASN1_VALUE **pval, const ASN1_ITEM *it); |
|
841 int asn1_enc_save(ASN1_VALUE **pval, unsigned char *in, int inlen, const ASN1_ITEM *it); |
|
842 |
|
843 #ifdef __cplusplus |
|
844 } |
|
845 #endif |
|
846 #endif |
|
847 |