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comparison: security/nss/lib/smime/cmscinfo.c

security/nss/lib/smime/cmscinfo.c

changeset 2
7e26c7da4463
equal deleted inserted replaced
-1:000000000000 0:42c472c2e7c0
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 * CMS contentInfo methods.
7 */
8
9 #include "cmslocal.h"
10
11 #include "pk11func.h"
12 #include "secitem.h"
13 #include "secoid.h"
14 #include "secerr.h"
15
16
17 /*
18 * NSS_CMSContentInfo_Create - create a content info
19 *
20 * version is set in the _Finalize procedures for each content type
21 */
22 SECStatus
23 NSS_CMSContentInfo_Private_Init(NSSCMSContentInfo *cinfo)
24 {
25 if (cinfo->privateInfo) {
26 return SECSuccess;
27 }
28 cinfo->privateInfo = PORT_ZNew(NSSCMSContentInfoPrivate);
29 return (cinfo->privateInfo) ? SECSuccess : SECFailure;
30 }
31
32
33 static void
34 nss_cmsContentInfo_private_destroy(NSSCMSContentInfoPrivate *privateInfo)
35 {
36 if (privateInfo->digcx) {
37 /* must destroy digest objects */
38 NSS_CMSDigestContext_Cancel(privateInfo->digcx);
39 privateInfo->digcx = NULL;
40 }
41 if (privateInfo->ciphcx) {
42 NSS_CMSCipherContext_Destroy(privateInfo->ciphcx);
43 privateInfo->ciphcx = NULL;
44 }
45 PORT_Free(privateInfo);
46 }
47
48 /*
49 * NSS_CMSContentInfo_Destroy - destroy a CMS contentInfo and all of its sub-pieces.
50 */
51 void
52 NSS_CMSContentInfo_Destroy(NSSCMSContentInfo *cinfo)
53 {
54 SECOidTag kind;
55
56 kind = NSS_CMSContentInfo_GetContentTypeTag(cinfo);
57 switch (kind) {
58 case SEC_OID_PKCS7_ENVELOPED_DATA:
59 NSS_CMSEnvelopedData_Destroy(cinfo->content.envelopedData);
60 break;
61 case SEC_OID_PKCS7_SIGNED_DATA:
62 NSS_CMSSignedData_Destroy(cinfo->content.signedData);
63 break;
64 case SEC_OID_PKCS7_ENCRYPTED_DATA:
65 NSS_CMSEncryptedData_Destroy(cinfo->content.encryptedData);
66 break;
67 case SEC_OID_PKCS7_DIGESTED_DATA:
68 NSS_CMSDigestedData_Destroy(cinfo->content.digestedData);
69 break;
70 default:
71 NSS_CMSGenericWrapperData_Destroy(kind, cinfo->content.genericData);
72 /* XXX Anything else that needs to be "manually" freed/destroyed? */
73 break;
74 }
75 if (cinfo->privateInfo) {
76 nss_cmsContentInfo_private_destroy(cinfo->privateInfo);
77 cinfo->privateInfo = NULL;
78 }
79 if (cinfo->bulkkey) {
80 PK11_FreeSymKey(cinfo->bulkkey);
81 }
82 }
83
84 /*
85 * NSS_CMSContentInfo_GetChildContentInfo - get content's contentInfo (if it exists)
86 */
87 NSSCMSContentInfo *
88 NSS_CMSContentInfo_GetChildContentInfo(NSSCMSContentInfo *cinfo)
89 {
90 NSSCMSContentInfo * ccinfo = NULL;
91 SECOidTag tag = NSS_CMSContentInfo_GetContentTypeTag(cinfo);
92 switch (tag) {
93 case SEC_OID_PKCS7_SIGNED_DATA:
94 if (cinfo->content.signedData != NULL) {
95 ccinfo = &(cinfo->content.signedData->contentInfo);
96 }
97 break;
98 case SEC_OID_PKCS7_ENVELOPED_DATA:
99 if (cinfo->content.envelopedData != NULL) {
100 ccinfo = &(cinfo->content.envelopedData->contentInfo);
101 }
102 break;
103 case SEC_OID_PKCS7_DIGESTED_DATA:
104 if (cinfo->content.digestedData != NULL) {
105 ccinfo = &(cinfo->content.digestedData->contentInfo);
106 }
107 break;
108 case SEC_OID_PKCS7_ENCRYPTED_DATA:
109 if (cinfo->content.encryptedData != NULL) {
110 ccinfo = &(cinfo->content.encryptedData->contentInfo);
111 }
112 break;
113 case SEC_OID_PKCS7_DATA:
114 default:
115 if (NSS_CMSType_IsWrapper(tag)) {
116 if (cinfo->content.genericData != NULL) {
117 ccinfo = &(cinfo->content.genericData->contentInfo);
118 }
119 }
120 break;
121 }
122 if (ccinfo && !ccinfo->privateInfo) {
123 NSS_CMSContentInfo_Private_Init(ccinfo);
124 }
125 return ccinfo;
126 }
127
128 SECStatus
129 NSS_CMSContentInfo_SetDontStream(NSSCMSContentInfo *cinfo, PRBool dontStream)
130 {
131 SECStatus rv;
132
133 rv = NSS_CMSContentInfo_Private_Init(cinfo);
134 if (rv != SECSuccess) {
135 /* default is streaming, failure to get ccinfo will not effect this */
136 return dontStream ? SECFailure : SECSuccess ;
137 }
138 cinfo->privateInfo->dontStream = dontStream;
139 return SECSuccess;
140 }
141
142 /*
143 * NSS_CMSContentInfo_SetContent - set content type & content
144 */
145 SECStatus
146 NSS_CMSContentInfo_SetContent(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, SECOidTag type, void *ptr)
147 {
148 SECStatus rv;
149
150 cinfo->contentTypeTag = SECOID_FindOIDByTag(type);
151 if (cinfo->contentTypeTag == NULL)
152 return SECFailure;
153
154 /* do not copy the oid, just create a reference */
155 rv = SECITEM_CopyItem (cmsg->poolp, &(cinfo->contentType), &(cinfo->contentTypeTag->oid));
156 if (rv != SECSuccess)
157 return SECFailure;
158
159 cinfo->content.pointer = ptr;
160
161 if (NSS_CMSType_IsData(type) && ptr) {
162 cinfo->rawContent = ptr;
163 } else {
164 /* as we always have some inner data,
165 * we need to set it to something, just to fool the encoder enough to work on it
166 * and get us into nss_cms_encoder_notify at that point */
167 cinfo->rawContent = SECITEM_AllocItem(cmsg->poolp, NULL, 1);
168 if (cinfo->rawContent == NULL) {
169 PORT_SetError(SEC_ERROR_NO_MEMORY);
170 return SECFailure;
171 }
172 }
173
174 return SECSuccess;
175 }
176
177 /*
178 * NSS_CMSContentInfo_SetContent_XXXX - typesafe wrappers for NSS_CMSContentInfo_SetContent
179 */
180
181 /*
182 * data == NULL -> pass in data via NSS_CMSEncoder_Update
183 * data != NULL -> take this data
184 */
185 SECStatus
186 NSS_CMSContentInfo_SetContent_Data(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, SECItem *data, PRBool detached)
187 {
188 if (NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_DATA, (void *)data) != SECSuccess)
189 return SECFailure;
190 if (detached) {
191 cinfo->rawContent = NULL;
192 }
193
194 return SECSuccess;
195 }
196
197 SECStatus
198 NSS_CMSContentInfo_SetContent_SignedData(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, NSSCMSSignedData *sigd)
199 {
200 return NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_SIGNED_DATA, (void *)sigd);
201 }
202
203 SECStatus
204 NSS_CMSContentInfo_SetContent_EnvelopedData(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, NSSCMSEnvelopedData *envd)
205 {
206 return NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_ENVELOPED_DATA, (void *)envd);
207 }
208
209 SECStatus
210 NSS_CMSContentInfo_SetContent_DigestedData(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, NSSCMSDigestedData *digd)
211 {
212 return NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_DIGESTED_DATA, (void *)digd);
213 }
214
215 SECStatus
216 NSS_CMSContentInfo_SetContent_EncryptedData(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, NSSCMSEncryptedData *encd)
217 {
218 return NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_ENCRYPTED_DATA, (void *)encd);
219 }
220
221
222 /*
223 * NSS_CMSContentInfo_GetContent - get pointer to inner content
224 *
225 * needs to be casted...
226 */
227 void *
228 NSS_CMSContentInfo_GetContent(NSSCMSContentInfo *cinfo)
229 {
230 SECOidTag tag = (cinfo && cinfo->contentTypeTag)
231 ? cinfo->contentTypeTag->offset
232 : SEC_OID_UNKNOWN;
233 switch (tag) {
234 case SEC_OID_PKCS7_DATA:
235 case SEC_OID_PKCS7_SIGNED_DATA:
236 case SEC_OID_PKCS7_ENVELOPED_DATA:
237 case SEC_OID_PKCS7_DIGESTED_DATA:
238 case SEC_OID_PKCS7_ENCRYPTED_DATA:
239 return cinfo->content.pointer;
240 default:
241 return NSS_CMSType_IsWrapper(tag) ? cinfo->content.pointer : (NSS_CMSType_IsData(tag) ? cinfo->rawContent : NULL);
242 }
243 }
244
245 /*
246 * NSS_CMSContentInfo_GetInnerContent - get pointer to innermost content
247 *
248 * this is typically only called by NSS_CMSMessage_GetContent()
249 */
250
251 SECItem *
252 NSS_CMSContentInfo_GetInnerContent(NSSCMSContentInfo *cinfo)
253 {
254 NSSCMSContentInfo *ccinfo;
255 SECOidTag tag;
256 SECItem *pItem = NULL;
257
258 tag = NSS_CMSContentInfo_GetContentTypeTag(cinfo);
259 if (NSS_CMSType_IsData(tag)) {
260 pItem = cinfo->content.data;
261 } else if (NSS_CMSType_IsWrapper(tag)) {
262 ccinfo = NSS_CMSContentInfo_GetChildContentInfo(cinfo);
263 if (ccinfo != NULL) {
264 pItem = NSS_CMSContentInfo_GetContent(ccinfo);
265 }
266 } else {
267 PORT_Assert(0);
268 }
269
270 return pItem;
271 }
272
273
274 /*
275 * NSS_CMSContentInfo_GetContentType{Tag,OID} - find out (saving pointer to lookup result
276 * for future reference) and return the inner content type.
277 */
278 SECOidTag
279 NSS_CMSContentInfo_GetContentTypeTag(NSSCMSContentInfo *cinfo)
280 {
281 if (cinfo->contentTypeTag == NULL)
282 cinfo->contentTypeTag = SECOID_FindOID(&(cinfo->contentType));
283
284 if (cinfo->contentTypeTag == NULL)
285 return SEC_OID_UNKNOWN;
286
287 return cinfo->contentTypeTag->offset;
288 }
289
290 SECItem *
291 NSS_CMSContentInfo_GetContentTypeOID(NSSCMSContentInfo *cinfo)
292 {
293 if (cinfo->contentTypeTag == NULL)
294 cinfo->contentTypeTag = SECOID_FindOID(&(cinfo->contentType));
295
296 if (cinfo->contentTypeTag == NULL)
297 return NULL;
298
299 return &(cinfo->contentTypeTag->oid);
300 }
301
302 /*
303 * NSS_CMSContentInfo_GetContentEncAlgTag - find out (saving pointer to lookup result
304 * for future reference) and return the content encryption algorithm tag.
305 */
306 SECOidTag
307 NSS_CMSContentInfo_GetContentEncAlgTag(NSSCMSContentInfo *cinfo)
308 {
309 if (cinfo->contentEncAlgTag == SEC_OID_UNKNOWN)
310 cinfo->contentEncAlgTag = SECOID_GetAlgorithmTag(&(cinfo->contentEncAlg));
311
312 return cinfo->contentEncAlgTag;
313 }
314
315 /*
316 * NSS_CMSContentInfo_GetContentEncAlg - find out and return the content encryption algorithm tag.
317 */
318 SECAlgorithmID *
319 NSS_CMSContentInfo_GetContentEncAlg(NSSCMSContentInfo *cinfo)
320 {
321 return &(cinfo->contentEncAlg);
322 }
323
324 SECStatus
325 NSS_CMSContentInfo_SetContentEncAlg(PLArenaPool *poolp, NSSCMSContentInfo *cinfo,
326 SECOidTag bulkalgtag, SECItem *parameters, int keysize)
327 {
328 SECStatus rv;
329
330 rv = SECOID_SetAlgorithmID(poolp, &(cinfo->contentEncAlg), bulkalgtag, parameters);
331 if (rv != SECSuccess)
332 return SECFailure;
333 cinfo->keysize = keysize;
334 return SECSuccess;
335 }
336
337 SECStatus
338 NSS_CMSContentInfo_SetContentEncAlgID(PLArenaPool *poolp, NSSCMSContentInfo *cinfo,
339 SECAlgorithmID *algid, int keysize)
340 {
341 SECStatus rv;
342
343 rv = SECOID_CopyAlgorithmID(poolp, &(cinfo->contentEncAlg), algid);
344 if (rv != SECSuccess)
345 return SECFailure;
346 if (keysize >= 0)
347 cinfo->keysize = keysize;
348 return SECSuccess;
349 }
350
351 void
352 NSS_CMSContentInfo_SetBulkKey(NSSCMSContentInfo *cinfo, PK11SymKey *bulkkey)
353 {
354 cinfo->bulkkey = PK11_ReferenceSymKey(bulkkey);
355 cinfo->keysize = PK11_GetKeyStrength(cinfo->bulkkey, &(cinfo->contentEncAlg));
356 }
357
358 PK11SymKey *
359 NSS_CMSContentInfo_GetBulkKey(NSSCMSContentInfo *cinfo)
360 {
361 if (cinfo->bulkkey == NULL)
362 return NULL;
363
364 return PK11_ReferenceSymKey(cinfo->bulkkey);
365 }
366
367 int
368 NSS_CMSContentInfo_GetBulkKeySize(NSSCMSContentInfo *cinfo)
369 {
370 return cinfo->keysize;
371 }

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