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d02b48c6 | 1 | /* crypto/asn1/p7_lib.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
3 | * All rights reserved. |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
8 | * | |
9 | * This library is free for commercial and non-commercial use as long as | |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 | * | |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
52 | * | |
53 | * The licence and distribution terms for any publically available version or | |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
58 | ||
59 | #include <stdio.h> | |
60 | #include "cryptlib.h" | |
ec577822 BM |
61 | #include <openssl/asn1_mac.h> |
62 | #include <openssl/objects.h> | |
d02b48c6 RE |
63 | |
64 | /* ASN1err(ASN1_F_D2I_PKCS7,ASN1_R_BAD_PKCS7_CONTENT); | |
65 | * ASN1err(ASN1_F_I2D_PKCS7,ASN1_R_BAD_PKCS7_TYPE); | |
66 | * ASN1err(ASN1_F_PKCS7_NEW,ASN1_R_BAD_PKCS7_TYPE); | |
67 | */ | |
68 | ||
6b691a5c | 69 | int i2d_PKCS7(PKCS7 *a, unsigned char **pp) |
d02b48c6 RE |
70 | { |
71 | M_ASN1_I2D_vars(a); | |
72 | ||
73 | if (a->asn1 != NULL) | |
74 | { | |
75 | if (pp == NULL) | |
76 | return((int)a->length); | |
77 | memcpy(*pp,a->asn1,(int)a->length); | |
78 | *pp+=a->length; | |
79 | return((int)a->length); | |
80 | } | |
81 | ||
82 | ret+=4; /* sequence, BER header plus '0 0' end padding */ | |
83 | M_ASN1_I2D_len(a->type,i2d_ASN1_OBJECT); | |
84 | if (a->d.ptr != NULL) | |
85 | { | |
86 | ret+=4; /* explicit tag [ 0 ] BER plus '0 0' */ | |
87 | switch (OBJ_obj2nid(a->type)) | |
88 | { | |
89 | case NID_pkcs7_data: | |
90 | M_ASN1_I2D_len(a->d.data,i2d_ASN1_OCTET_STRING); | |
91 | break; | |
92 | case NID_pkcs7_signed: | |
93 | M_ASN1_I2D_len(a->d.sign,i2d_PKCS7_SIGNED); | |
94 | break; | |
95 | case NID_pkcs7_enveloped: | |
96 | M_ASN1_I2D_len(a->d.enveloped,i2d_PKCS7_ENVELOPE); | |
97 | break; | |
98 | case NID_pkcs7_signedAndEnveloped: | |
99 | M_ASN1_I2D_len(a->d.signed_and_enveloped, | |
100 | i2d_PKCS7_SIGN_ENVELOPE); | |
101 | break; | |
102 | case NID_pkcs7_digest: | |
103 | M_ASN1_I2D_len(a->d.digest,i2d_PKCS7_DIGEST); | |
104 | break; | |
105 | case NID_pkcs7_encrypted: | |
106 | M_ASN1_I2D_len(a->d.encrypted,i2d_PKCS7_ENCRYPT); | |
107 | break; | |
108 | default: | |
109 | break; | |
110 | } | |
111 | } | |
112 | r=ret; | |
113 | if (pp == NULL) return(r); | |
114 | p= *pp; | |
115 | M_ASN1_I2D_INF_seq_start(V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL); | |
116 | M_ASN1_I2D_put(a->type,i2d_ASN1_OBJECT); | |
117 | ||
118 | if (a->d.ptr != NULL) | |
119 | { | |
120 | M_ASN1_I2D_INF_seq_start(0,V_ASN1_CONTEXT_SPECIFIC); | |
121 | switch (OBJ_obj2nid(a->type)) | |
122 | { | |
123 | case NID_pkcs7_data: | |
124 | M_ASN1_I2D_put(a->d.data,i2d_ASN1_OCTET_STRING); | |
125 | break; | |
126 | case NID_pkcs7_signed: | |
127 | M_ASN1_I2D_put(a->d.sign,i2d_PKCS7_SIGNED); | |
128 | break; | |
129 | case NID_pkcs7_enveloped: | |
130 | M_ASN1_I2D_put(a->d.enveloped,i2d_PKCS7_ENVELOPE); | |
131 | break; | |
132 | case NID_pkcs7_signedAndEnveloped: | |
133 | M_ASN1_I2D_put(a->d.signed_and_enveloped, | |
134 | i2d_PKCS7_SIGN_ENVELOPE); | |
135 | break; | |
136 | case NID_pkcs7_digest: | |
137 | M_ASN1_I2D_put(a->d.digest,i2d_PKCS7_DIGEST); | |
138 | break; | |
139 | case NID_pkcs7_encrypted: | |
140 | M_ASN1_I2D_put(a->d.encrypted,i2d_PKCS7_ENCRYPT); | |
141 | break; | |
142 | default: | |
143 | break; | |
144 | } | |
145 | M_ASN1_I2D_INF_seq_end(); | |
146 | } | |
147 | M_ASN1_I2D_INF_seq_end(); | |
148 | M_ASN1_I2D_finish(); | |
149 | } | |
150 | ||
6b691a5c | 151 | PKCS7 *d2i_PKCS7(PKCS7 **a, unsigned char **pp, long length) |
d02b48c6 RE |
152 | { |
153 | M_ASN1_D2I_vars(a,PKCS7 *,PKCS7_new); | |
154 | ||
155 | if ((a != NULL) && ((*a) != NULL)) | |
156 | { | |
157 | if ((*a)->asn1 != NULL) | |
158 | { | |
159 | Free((char *)(*a)->asn1); | |
160 | (*a)->asn1=NULL; | |
161 | } | |
162 | (*a)->length=0; | |
163 | } | |
164 | ||
165 | M_ASN1_D2I_Init(); | |
166 | M_ASN1_D2I_start_sequence(); | |
167 | M_ASN1_D2I_get(ret->type,d2i_ASN1_OBJECT); | |
168 | if (!M_ASN1_D2I_end_sequence()) | |
169 | { | |
170 | int Tinf,Ttag,Tclass; | |
171 | long Tlen; | |
172 | ||
173 | if (M_ASN1_next != (V_ASN1_CONSTRUCTED| | |
174 | V_ASN1_CONTEXT_SPECIFIC|0)) | |
175 | { | |
176 | c.error=ASN1_R_BAD_PKCS7_CONTENT; | |
dfeab068 | 177 | c.line=__LINE__; |
d02b48c6 RE |
178 | goto err; |
179 | } | |
180 | ||
181 | ret->detached=0; | |
182 | ||
183 | c.q=c.p; | |
184 | Tinf=ASN1_get_object(&c.p,&Tlen,&Ttag,&Tclass, | |
185 | (c.inf & 1)?(length+ *pp-c.q):c.slen); | |
dfeab068 | 186 | if (Tinf & 0x80) { c.line=__LINE__; goto err; } |
d02b48c6 RE |
187 | c.slen-=(c.p-c.q); |
188 | ||
189 | switch (OBJ_obj2nid(ret->type)) | |
190 | { | |
191 | case NID_pkcs7_data: | |
192 | M_ASN1_D2I_get(ret->d.data,d2i_ASN1_OCTET_STRING); | |
193 | break; | |
194 | case NID_pkcs7_signed: | |
195 | M_ASN1_D2I_get(ret->d.sign,d2i_PKCS7_SIGNED); | |
196 | if (ret->d.sign->contents->d.ptr == NULL) | |
197 | ret->detached=1; | |
198 | break; | |
199 | case NID_pkcs7_enveloped: | |
200 | M_ASN1_D2I_get(ret->d.enveloped,d2i_PKCS7_ENVELOPE); | |
201 | break; | |
202 | case NID_pkcs7_signedAndEnveloped: | |
203 | M_ASN1_D2I_get(ret->d.signed_and_enveloped, | |
204 | d2i_PKCS7_SIGN_ENVELOPE); | |
205 | break; | |
206 | case NID_pkcs7_digest: | |
207 | M_ASN1_D2I_get(ret->d.digest,d2i_PKCS7_DIGEST); | |
208 | break; | |
209 | case NID_pkcs7_encrypted: | |
210 | M_ASN1_D2I_get(ret->d.encrypted,d2i_PKCS7_ENCRYPT); | |
211 | break; | |
212 | default: | |
213 | c.error=ASN1_R_BAD_PKCS7_TYPE; | |
dfeab068 | 214 | c.line=__LINE__; |
d02b48c6 | 215 | goto err; |
dfeab068 | 216 | /* break; */ |
d02b48c6 RE |
217 | } |
218 | if (Tinf == (1|V_ASN1_CONSTRUCTED)) | |
219 | { | |
220 | if (!ASN1_check_infinite_end(&c.p,c.slen)) | |
221 | { | |
dfeab068 RE |
222 | c.error=ERR_R_MISSING_ASN1_EOS; |
223 | c.line=__LINE__; | |
d02b48c6 RE |
224 | goto err; |
225 | } | |
226 | } | |
227 | } | |
228 | else | |
229 | ret->detached=1; | |
230 | ||
231 | M_ASN1_D2I_Finish(a,PKCS7_free,ASN1_F_D2I_PKCS7); | |
232 | } | |
233 | ||
6b691a5c | 234 | PKCS7 *PKCS7_new(void) |
d02b48c6 RE |
235 | { |
236 | PKCS7 *ret=NULL; | |
dfeab068 | 237 | ASN1_CTX c; |
d02b48c6 RE |
238 | |
239 | M_ASN1_New_Malloc(ret,PKCS7); | |
dfeab068 | 240 | ret->type=OBJ_nid2obj(NID_undef); |
d02b48c6 RE |
241 | ret->asn1=NULL; |
242 | ret->length=0; | |
243 | ret->detached=0; | |
244 | ret->d.ptr=NULL; | |
245 | return(ret); | |
246 | M_ASN1_New_Error(ASN1_F_PKCS7_NEW); | |
247 | } | |
248 | ||
6b691a5c | 249 | void PKCS7_free(PKCS7 *a) |
d02b48c6 RE |
250 | { |
251 | if (a == NULL) return; | |
252 | ||
253 | PKCS7_content_free(a); | |
254 | if (a->type != NULL) | |
255 | { | |
256 | ASN1_OBJECT_free(a->type); | |
257 | } | |
258 | Free((char *)(char *)a); | |
259 | } | |
260 | ||
6b691a5c | 261 | void PKCS7_content_free(PKCS7 *a) |
d02b48c6 | 262 | { |
e03ddfae BL |
263 | if(a == NULL) |
264 | return; | |
265 | ||
d02b48c6 RE |
266 | if (a->asn1 != NULL) Free((char *)a->asn1); |
267 | ||
268 | if (a->d.ptr != NULL) | |
269 | { | |
270 | if (a->type == NULL) return; | |
271 | ||
272 | switch (OBJ_obj2nid(a->type)) | |
273 | { | |
274 | case NID_pkcs7_data: | |
275 | ASN1_OCTET_STRING_free(a->d.data); | |
276 | break; | |
277 | case NID_pkcs7_signed: | |
278 | PKCS7_SIGNED_free(a->d.sign); | |
279 | break; | |
280 | case NID_pkcs7_enveloped: | |
281 | PKCS7_ENVELOPE_free(a->d.enveloped); | |
282 | break; | |
283 | case NID_pkcs7_signedAndEnveloped: | |
284 | PKCS7_SIGN_ENVELOPE_free(a->d.signed_and_enveloped); | |
285 | break; | |
286 | case NID_pkcs7_digest: | |
287 | PKCS7_DIGEST_free(a->d.digest); | |
288 | break; | |
289 | case NID_pkcs7_encrypted: | |
290 | PKCS7_ENCRYPT_free(a->d.encrypted); | |
291 | break; | |
292 | default: | |
293 | /* MEMORY LEAK */ | |
294 | break; | |
295 | } | |
296 | } | |
297 | a->d.ptr=NULL; | |
298 | } | |
299 |