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Side by Side Diff: nss/lib/util/secasn1.h

Issue 2078763002: Delete bundled copy of NSS and replace with README. (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/nss@master
Patch Set: Delete bundled copy of NSS and replace with README. Created 4 years, 6 months ago
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1 /* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
4
5 /*
6 * Support for encoding/decoding of ASN.1 using BER/DER (Basic/Distinguished
7 * Encoding Rules). The routines are found in and used extensively by the
8 * security library, but exported for other use.
9 */
10
11 #ifndef _SECASN1_H_
12 #define _SECASN1_H_
13
14 #include "utilrename.h"
15 #include "plarena.h"
16
17 #include "seccomon.h"
18 #include "secasn1t.h"
19
20
21 /************************************************************************/
22 SEC_BEGIN_PROTOS
23
24 /*
25 * XXX These function prototypes need full, explanatory comments.
26 */
27
28 /*
29 ** Decoding.
30 */
31
32 extern SEC_ASN1DecoderContext *SEC_ASN1DecoderStart(PLArenaPool *pool,
33 void *dest,
34 const SEC_ASN1Template *t);
35
36 /* XXX char or unsigned char? */
37 extern SECStatus SEC_ASN1DecoderUpdate(SEC_ASN1DecoderContext *cx,
38 const char *buf,
39 unsigned long len);
40
41 extern SECStatus SEC_ASN1DecoderFinish(SEC_ASN1DecoderContext *cx);
42
43 /* Higher level code detected an error, abort the rest of the processing */
44 extern void SEC_ASN1DecoderAbort(SEC_ASN1DecoderContext *cx, int error);
45
46 extern void SEC_ASN1DecoderSetFilterProc(SEC_ASN1DecoderContext *cx,
47 SEC_ASN1WriteProc fn,
48 void *arg, PRBool no_store);
49
50 extern void SEC_ASN1DecoderClearFilterProc(SEC_ASN1DecoderContext *cx);
51
52 extern void SEC_ASN1DecoderSetNotifyProc(SEC_ASN1DecoderContext *cx,
53 SEC_ASN1NotifyProc fn,
54 void *arg);
55
56 extern void SEC_ASN1DecoderClearNotifyProc(SEC_ASN1DecoderContext *cx);
57
58 extern SECStatus SEC_ASN1Decode(PLArenaPool *pool, void *dest,
59 const SEC_ASN1Template *t,
60 const char *buf, long len);
61
62 /* Both classic ASN.1 and QuickDER have a feature that removes leading zeroes
63 out of SEC_ASN1_INTEGER if the caller sets siUnsignedInteger in the type
64 field of the target SECItem prior to calling the decoder. Otherwise, the
65 type field is ignored and untouched. For SECItem that are dynamically
66 allocated (from POINTER, SET OF, SEQUENCE OF) the decoder sets the type
67 field to siBuffer. */
68
69 extern SECStatus SEC_ASN1DecodeItem(PLArenaPool *pool, void *dest,
70 const SEC_ASN1Template *t,
71 const SECItem *src);
72
73 extern SECStatus SEC_QuickDERDecodeItem(PLArenaPool* arena, void* dest,
74 const SEC_ASN1Template* templateEntry,
75 const SECItem* src);
76
77 /*
78 ** Encoding.
79 */
80
81 extern SEC_ASN1EncoderContext *SEC_ASN1EncoderStart(const void *src,
82 const SEC_ASN1Template *t,
83 SEC_ASN1WriteProc fn,
84 void *output_arg);
85
86 /* XXX char or unsigned char? */
87 extern SECStatus SEC_ASN1EncoderUpdate(SEC_ASN1EncoderContext *cx,
88 const char *buf,
89 unsigned long len);
90
91 extern void SEC_ASN1EncoderFinish(SEC_ASN1EncoderContext *cx);
92
93 /* Higher level code detected an error, abort the rest of the processing */
94 extern void SEC_ASN1EncoderAbort(SEC_ASN1EncoderContext *cx, int error);
95
96 extern void SEC_ASN1EncoderSetNotifyProc(SEC_ASN1EncoderContext *cx,
97 SEC_ASN1NotifyProc fn,
98 void *arg);
99
100 extern void SEC_ASN1EncoderClearNotifyProc(SEC_ASN1EncoderContext *cx);
101
102 extern void SEC_ASN1EncoderSetStreaming(SEC_ASN1EncoderContext *cx);
103
104 extern void SEC_ASN1EncoderClearStreaming(SEC_ASN1EncoderContext *cx);
105
106 extern void sec_ASN1EncoderSetDER(SEC_ASN1EncoderContext *cx);
107
108 extern void sec_ASN1EncoderClearDER(SEC_ASN1EncoderContext *cx);
109
110 extern void SEC_ASN1EncoderSetTakeFromBuf(SEC_ASN1EncoderContext *cx);
111
112 extern void SEC_ASN1EncoderClearTakeFromBuf(SEC_ASN1EncoderContext *cx);
113
114 extern SECStatus SEC_ASN1Encode(const void *src, const SEC_ASN1Template *t,
115 SEC_ASN1WriteProc output_proc,
116 void *output_arg);
117
118 /*
119 * If both pool and dest are NULL, the caller should free the returned SECItem
120 * with a SECITEM_FreeItem(..., PR_TRUE) call. If pool is NULL but dest is
121 * not NULL, the caller should free the data buffer pointed to by dest with a
122 * SECITEM_FreeItem(dest, PR_FALSE) or PORT_Free(dest->data) call.
123 */
124 extern SECItem * SEC_ASN1EncodeItem(PLArenaPool *pool, SECItem *dest,
125 const void *src, const SEC_ASN1Template *t);
126
127 extern SECItem * SEC_ASN1EncodeInteger(PLArenaPool *pool,
128 SECItem *dest, long value);
129
130 extern SECItem * SEC_ASN1EncodeUnsignedInteger(PLArenaPool *pool,
131 SECItem *dest,
132 unsigned long value);
133
134 extern SECStatus SEC_ASN1DecodeInteger(SECItem *src,
135 unsigned long *value);
136
137 /*
138 ** Utilities.
139 */
140
141 /*
142 * We have a length that needs to be encoded; how many bytes will the
143 * encoding take?
144 */
145 extern int SEC_ASN1LengthLength (unsigned long len);
146
147 /* encode the length and return the number of bytes we encoded. Buffer
148 * must be pre allocated */
149 extern int SEC_ASN1EncodeLength(unsigned char *buf,int value);
150
151 /*
152 * Find the appropriate subtemplate for the given template.
153 * This may involve calling a "chooser" function, or it may just
154 * be right there. In either case, it is expected to *have* a
155 * subtemplate; this is asserted in debug builds (in non-debug
156 * builds, NULL will be returned).
157 *
158 * "thing" is a pointer to the structure being encoded/decoded
159 * "encoding", when true, means that we are in the process of encoding
160 * (as opposed to in the process of decoding)
161 */
162 extern const SEC_ASN1Template *
163 SEC_ASN1GetSubtemplate (const SEC_ASN1Template *inTemplate, void *thing,
164 PRBool encoding);
165
166 /* whether the template is for a primitive type or a choice of
167 * primitive types
168 */
169 extern PRBool SEC_ASN1IsTemplateSimple(const SEC_ASN1Template *theTemplate);
170
171 /************************************************************************/
172
173 /*
174 * Generic Templates
175 * One for each of the simple types, plus a special one for ANY, plus:
176 * - a pointer to each one of those
177 * - a set of each one of those
178 * - a sequence of each one of those
179 *
180 * Note that these are alphabetical (case insensitive); please add new
181 * ones in the appropriate place.
182 */
183
184 extern const SEC_ASN1Template SEC_AnyTemplate[];
185 extern const SEC_ASN1Template SEC_BitStringTemplate[];
186 extern const SEC_ASN1Template SEC_BMPStringTemplate[];
187 extern const SEC_ASN1Template SEC_BooleanTemplate[];
188 extern const SEC_ASN1Template SEC_EnumeratedTemplate[];
189 extern const SEC_ASN1Template SEC_GeneralizedTimeTemplate[];
190 extern const SEC_ASN1Template SEC_IA5StringTemplate[];
191 extern const SEC_ASN1Template SEC_IntegerTemplate[];
192 extern const SEC_ASN1Template SEC_NullTemplate[];
193 extern const SEC_ASN1Template SEC_ObjectIDTemplate[];
194 extern const SEC_ASN1Template SEC_OctetStringTemplate[];
195 extern const SEC_ASN1Template SEC_PrintableStringTemplate[];
196 extern const SEC_ASN1Template SEC_T61StringTemplate[];
197 extern const SEC_ASN1Template SEC_UniversalStringTemplate[];
198 extern const SEC_ASN1Template SEC_UTCTimeTemplate[];
199 extern const SEC_ASN1Template SEC_UTF8StringTemplate[];
200 extern const SEC_ASN1Template SEC_VisibleStringTemplate[];
201
202 extern const SEC_ASN1Template SEC_PointerToAnyTemplate[];
203 extern const SEC_ASN1Template SEC_PointerToBitStringTemplate[];
204 extern const SEC_ASN1Template SEC_PointerToBMPStringTemplate[];
205 extern const SEC_ASN1Template SEC_PointerToBooleanTemplate[];
206 extern const SEC_ASN1Template SEC_PointerToEnumeratedTemplate[];
207 extern const SEC_ASN1Template SEC_PointerToGeneralizedTimeTemplate[];
208 extern const SEC_ASN1Template SEC_PointerToIA5StringTemplate[];
209 extern const SEC_ASN1Template SEC_PointerToIntegerTemplate[];
210 extern const SEC_ASN1Template SEC_PointerToNullTemplate[];
211 extern const SEC_ASN1Template SEC_PointerToObjectIDTemplate[];
212 extern const SEC_ASN1Template SEC_PointerToOctetStringTemplate[];
213 extern const SEC_ASN1Template SEC_PointerToPrintableStringTemplate[];
214 extern const SEC_ASN1Template SEC_PointerToT61StringTemplate[];
215 extern const SEC_ASN1Template SEC_PointerToUniversalStringTemplate[];
216 extern const SEC_ASN1Template SEC_PointerToUTCTimeTemplate[];
217 extern const SEC_ASN1Template SEC_PointerToUTF8StringTemplate[];
218 extern const SEC_ASN1Template SEC_PointerToVisibleStringTemplate[];
219
220 extern const SEC_ASN1Template SEC_SequenceOfAnyTemplate[];
221 extern const SEC_ASN1Template SEC_SequenceOfBitStringTemplate[];
222 extern const SEC_ASN1Template SEC_SequenceOfBMPStringTemplate[];
223 extern const SEC_ASN1Template SEC_SequenceOfBooleanTemplate[];
224 extern const SEC_ASN1Template SEC_SequenceOfEnumeratedTemplate[];
225 extern const SEC_ASN1Template SEC_SequenceOfGeneralizedTimeTemplate[];
226 extern const SEC_ASN1Template SEC_SequenceOfIA5StringTemplate[];
227 extern const SEC_ASN1Template SEC_SequenceOfIntegerTemplate[];
228 extern const SEC_ASN1Template SEC_SequenceOfNullTemplate[];
229 extern const SEC_ASN1Template SEC_SequenceOfObjectIDTemplate[];
230 extern const SEC_ASN1Template SEC_SequenceOfOctetStringTemplate[];
231 extern const SEC_ASN1Template SEC_SequenceOfPrintableStringTemplate[];
232 extern const SEC_ASN1Template SEC_SequenceOfT61StringTemplate[];
233 extern const SEC_ASN1Template SEC_SequenceOfUniversalStringTemplate[];
234 extern const SEC_ASN1Template SEC_SequenceOfUTCTimeTemplate[];
235 extern const SEC_ASN1Template SEC_SequenceOfUTF8StringTemplate[];
236 extern const SEC_ASN1Template SEC_SequenceOfVisibleStringTemplate[];
237
238 extern const SEC_ASN1Template SEC_SetOfAnyTemplate[];
239 extern const SEC_ASN1Template SEC_SetOfBitStringTemplate[];
240 extern const SEC_ASN1Template SEC_SetOfBMPStringTemplate[];
241 extern const SEC_ASN1Template SEC_SetOfBooleanTemplate[];
242 extern const SEC_ASN1Template SEC_SetOfEnumeratedTemplate[];
243 extern const SEC_ASN1Template SEC_SetOfGeneralizedTimeTemplate[];
244 extern const SEC_ASN1Template SEC_SetOfIA5StringTemplate[];
245 extern const SEC_ASN1Template SEC_SetOfIntegerTemplate[];
246 extern const SEC_ASN1Template SEC_SetOfNullTemplate[];
247 extern const SEC_ASN1Template SEC_SetOfObjectIDTemplate[];
248 extern const SEC_ASN1Template SEC_SetOfOctetStringTemplate[];
249 extern const SEC_ASN1Template SEC_SetOfPrintableStringTemplate[];
250 extern const SEC_ASN1Template SEC_SetOfT61StringTemplate[];
251 extern const SEC_ASN1Template SEC_SetOfUniversalStringTemplate[];
252 extern const SEC_ASN1Template SEC_SetOfUTCTimeTemplate[];
253 extern const SEC_ASN1Template SEC_SetOfUTF8StringTemplate[];
254 extern const SEC_ASN1Template SEC_SetOfVisibleStringTemplate[];
255
256 /*
257 * Template for skipping a subitem; this only makes sense when decoding.
258 */
259 extern const SEC_ASN1Template SEC_SkipTemplate[];
260
261 /* These functions simply return the address of the above-declared templates.
262 ** This is necessary for Windows DLLs. Sigh.
263 */
264 SEC_ASN1_CHOOSER_DECLARE(SEC_AnyTemplate)
265 SEC_ASN1_CHOOSER_DECLARE(SEC_BMPStringTemplate)
266 SEC_ASN1_CHOOSER_DECLARE(SEC_BooleanTemplate)
267 SEC_ASN1_CHOOSER_DECLARE(SEC_BitStringTemplate)
268 SEC_ASN1_CHOOSER_DECLARE(SEC_GeneralizedTimeTemplate)
269 SEC_ASN1_CHOOSER_DECLARE(SEC_IA5StringTemplate)
270 SEC_ASN1_CHOOSER_DECLARE(SEC_IntegerTemplate)
271 SEC_ASN1_CHOOSER_DECLARE(SEC_NullTemplate)
272 SEC_ASN1_CHOOSER_DECLARE(SEC_ObjectIDTemplate)
273 SEC_ASN1_CHOOSER_DECLARE(SEC_OctetStringTemplate)
274 SEC_ASN1_CHOOSER_DECLARE(SEC_UTCTimeTemplate)
275 SEC_ASN1_CHOOSER_DECLARE(SEC_UTF8StringTemplate)
276
277 SEC_ASN1_CHOOSER_DECLARE(SEC_PointerToAnyTemplate)
278 SEC_ASN1_CHOOSER_DECLARE(SEC_PointerToOctetStringTemplate)
279
280 SEC_ASN1_CHOOSER_DECLARE(SEC_SetOfAnyTemplate)
281
282 SEC_ASN1_CHOOSER_DECLARE(SEC_EnumeratedTemplate)
283 SEC_ASN1_CHOOSER_DECLARE(SEC_PointerToEnumeratedTemplate)
284 SEC_ASN1_CHOOSER_DECLARE(SEC_SequenceOfAnyTemplate)
285 SEC_ASN1_CHOOSER_DECLARE(SEC_SequenceOfObjectIDTemplate)
286 SEC_ASN1_CHOOSER_DECLARE(SEC_SkipTemplate)
287 SEC_ASN1_CHOOSER_DECLARE(SEC_UniversalStringTemplate)
288 SEC_ASN1_CHOOSER_DECLARE(SEC_PrintableStringTemplate)
289 SEC_ASN1_CHOOSER_DECLARE(SEC_T61StringTemplate)
290 SEC_ASN1_CHOOSER_DECLARE(SEC_PointerToGeneralizedTimeTemplate)
291 SEC_END_PROTOS
292 #endif /* _SECASN1_H_ */
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