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1 /* crypto/x509/x509name.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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 <openssl/stack.h>
61 #include "cryptlib.h"
62 #include <openssl/asn1.h>
63 #include <openssl/objects.h>
64 #include <openssl/evp.h>
65 #include <openssl/x509.h>
66 
X509_NAME_get_text_by_NID(X509_NAME * name,int nid,char * buf,int len)67 int X509_NAME_get_text_by_NID(X509_NAME *name, int nid, char *buf, int len)
68 	{
69 	ASN1_OBJECT *obj;
70 
71 	obj=OBJ_nid2obj(nid);
72 	if (obj == NULL) return(-1);
73 	return(X509_NAME_get_text_by_OBJ(name,obj,buf,len));
74 	}
75 
X509_NAME_get_text_by_OBJ(X509_NAME * name,ASN1_OBJECT * obj,char * buf,int len)76 int X509_NAME_get_text_by_OBJ(X509_NAME *name, ASN1_OBJECT *obj, char *buf,
77 	     int len)
78 	{
79 	int i;
80 	ASN1_STRING *data;
81 
82 	i=X509_NAME_get_index_by_OBJ(name,obj,-1);
83 	if (i < 0) return(-1);
84 	data=X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name,i));
85 	i=(data->length > (len-1))?(len-1):data->length;
86 	if (buf == NULL) return(data->length);
87 	memcpy(buf,data->data,i);
88 	buf[i]='\0';
89 	return(i);
90 	}
91 
X509_NAME_entry_count(X509_NAME * name)92 int X509_NAME_entry_count(X509_NAME *name)
93 	{
94 	if (name == NULL) return(0);
95 	return(sk_X509_NAME_ENTRY_num(name->entries));
96 	}
97 
X509_NAME_get_index_by_NID(X509_NAME * name,int nid,int lastpos)98 int X509_NAME_get_index_by_NID(X509_NAME *name, int nid, int lastpos)
99 	{
100 	ASN1_OBJECT *obj;
101 
102 	obj=OBJ_nid2obj(nid);
103 	if (obj == NULL) return(-2);
104 	return(X509_NAME_get_index_by_OBJ(name,obj,lastpos));
105 	}
106 
107 /* NOTE: you should be passsing -1, not 0 as lastpos */
X509_NAME_get_index_by_OBJ(X509_NAME * name,ASN1_OBJECT * obj,int lastpos)108 int X509_NAME_get_index_by_OBJ(X509_NAME *name, ASN1_OBJECT *obj,
109 	     int lastpos)
110 	{
111 	int n;
112 	X509_NAME_ENTRY *ne;
113 	STACK_OF(X509_NAME_ENTRY) *sk;
114 
115 	if (name == NULL) return(-1);
116 	if (lastpos < 0)
117 		lastpos= -1;
118 	sk=name->entries;
119 	n=sk_X509_NAME_ENTRY_num(sk);
120 	for (lastpos++; lastpos < n; lastpos++)
121 		{
122 		ne=sk_X509_NAME_ENTRY_value(sk,lastpos);
123 		if (OBJ_cmp(ne->object,obj) == 0)
124 			return(lastpos);
125 		}
126 	return(-1);
127 	}
128 
X509_NAME_get_entry(X509_NAME * name,int loc)129 X509_NAME_ENTRY *X509_NAME_get_entry(X509_NAME *name, int loc)
130 	{
131 	if(name == NULL || sk_X509_NAME_ENTRY_num(name->entries) <= loc
132 	   || loc < 0)
133 		return(NULL);
134 	else
135 		return(sk_X509_NAME_ENTRY_value(name->entries,loc));
136 	}
137 
X509_NAME_delete_entry(X509_NAME * name,int loc)138 X509_NAME_ENTRY *X509_NAME_delete_entry(X509_NAME *name, int loc)
139 	{
140 	X509_NAME_ENTRY *ret;
141 	int i,n,set_prev,set_next;
142 	STACK_OF(X509_NAME_ENTRY) *sk;
143 
144 	if (name == NULL || sk_X509_NAME_ENTRY_num(name->entries) <= loc
145 	    || loc < 0)
146 		return(NULL);
147 	sk=name->entries;
148 	ret=sk_X509_NAME_ENTRY_delete(sk,loc);
149 	n=sk_X509_NAME_ENTRY_num(sk);
150 	name->modified=1;
151 	if (loc == n) return(ret);
152 
153 	/* else we need to fixup the set field */
154 	if (loc != 0)
155 		set_prev=(sk_X509_NAME_ENTRY_value(sk,loc-1))->set;
156 	else
157 		set_prev=ret->set-1;
158 	set_next=sk_X509_NAME_ENTRY_value(sk,loc)->set;
159 
160 	/* set_prev is the previous set
161 	 * set is the current set
162 	 * set_next is the following
163 	 * prev  1 1	1 1	1 1	1 1
164 	 * set   1	1	2	2
165 	 * next  1 1	2 2	2 2	3 2
166 	 * so basically only if prev and next differ by 2, then
167 	 * re-number down by 1 */
168 	if (set_prev+1 < set_next)
169 		for (i=loc; i<n; i++)
170 			sk_X509_NAME_ENTRY_value(sk,i)->set--;
171 	return(ret);
172 	}
173 
X509_NAME_add_entry_by_OBJ(X509_NAME * name,ASN1_OBJECT * obj,int type,unsigned char * bytes,int len,int loc,int set)174 int X509_NAME_add_entry_by_OBJ(X509_NAME *name, ASN1_OBJECT *obj, int type,
175 			unsigned char *bytes, int len, int loc, int set)
176 {
177 	X509_NAME_ENTRY *ne;
178 	int ret;
179 	ne = X509_NAME_ENTRY_create_by_OBJ(NULL, obj, type, bytes, len);
180 	if(!ne) return 0;
181 	ret = X509_NAME_add_entry(name, ne, loc, set);
182 	X509_NAME_ENTRY_free(ne);
183 	return ret;
184 }
185 
X509_NAME_add_entry_by_NID(X509_NAME * name,int nid,int type,unsigned char * bytes,int len,int loc,int set)186 int X509_NAME_add_entry_by_NID(X509_NAME *name, int nid, int type,
187 			unsigned char *bytes, int len, int loc, int set)
188 {
189 	X509_NAME_ENTRY *ne;
190 	int ret;
191 	ne = X509_NAME_ENTRY_create_by_NID(NULL, nid, type, bytes, len);
192 	if(!ne) return 0;
193 	ret = X509_NAME_add_entry(name, ne, loc, set);
194 	X509_NAME_ENTRY_free(ne);
195 	return ret;
196 }
197 
X509_NAME_add_entry_by_txt(X509_NAME * name,const char * field,int type,const unsigned char * bytes,int len,int loc,int set)198 int X509_NAME_add_entry_by_txt(X509_NAME *name, const char *field, int type,
199 			const unsigned char *bytes, int len, int loc, int set)
200 {
201 	X509_NAME_ENTRY *ne;
202 	int ret;
203 	ne = X509_NAME_ENTRY_create_by_txt(NULL, field, type, bytes, len);
204 	if(!ne) return 0;
205 	ret = X509_NAME_add_entry(name, ne, loc, set);
206 	X509_NAME_ENTRY_free(ne);
207 	return ret;
208 }
209 
210 /* if set is -1, append to previous set, 0 'a new one', and 1,
211  * prepend to the guy we are about to stomp on. */
X509_NAME_add_entry(X509_NAME * name,X509_NAME_ENTRY * ne,int loc,int set)212 int X509_NAME_add_entry(X509_NAME *name, X509_NAME_ENTRY *ne, int loc,
213 	     int set)
214 	{
215 	X509_NAME_ENTRY *new_name=NULL;
216 	int n,i,inc;
217 	STACK_OF(X509_NAME_ENTRY) *sk;
218 
219 	if (name == NULL) return(0);
220 	sk=name->entries;
221 	n=sk_X509_NAME_ENTRY_num(sk);
222 	if (loc > n) loc=n;
223 	else if (loc < 0) loc=n;
224 
225 	name->modified=1;
226 
227 	if (set == -1)
228 		{
229 		if (loc == 0)
230 			{
231 			set=0;
232 			inc=1;
233 			}
234 		else
235 			{
236 			set=sk_X509_NAME_ENTRY_value(sk,loc-1)->set;
237 			inc=0;
238 			}
239 		}
240 	else /* if (set >= 0) */
241 		{
242 		if (loc >= n)
243 			{
244 			if (loc != 0)
245 				set=sk_X509_NAME_ENTRY_value(sk,loc-1)->set+1;
246 			else
247 				set=0;
248 			}
249 		else
250 			set=sk_X509_NAME_ENTRY_value(sk,loc)->set;
251 		inc=(set == 0)?1:0;
252 		}
253 
254 	if ((new_name=X509_NAME_ENTRY_dup(ne)) == NULL)
255 		goto err;
256 	new_name->set=set;
257 	if (!sk_X509_NAME_ENTRY_insert(sk,new_name,loc))
258 		{
259 		X509err(X509_F_X509_NAME_ADD_ENTRY,ERR_R_MALLOC_FAILURE);
260 		goto err;
261 		}
262 	if (inc)
263 		{
264 		n=sk_X509_NAME_ENTRY_num(sk);
265 		for (i=loc+1; i<n; i++)
266 			sk_X509_NAME_ENTRY_value(sk,i-1)->set+=1;
267 		}
268 	return(1);
269 err:
270 	if (new_name != NULL)
271 		X509_NAME_ENTRY_free(new_name);
272 	return(0);
273 	}
274 
X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY ** ne,const char * field,int type,const unsigned char * bytes,int len)275 X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY **ne,
276 		const char *field, int type, const unsigned char *bytes, int len)
277 	{
278 	ASN1_OBJECT *obj;
279 	X509_NAME_ENTRY *nentry;
280 
281 	obj=OBJ_txt2obj(field, 0);
282 	if (obj == NULL)
283 		{
284 		X509err(X509_F_X509_NAME_ENTRY_CREATE_BY_TXT,
285 						X509_R_INVALID_FIELD_NAME);
286 		ERR_add_error_data(2, "name=", field);
287 		return(NULL);
288 		}
289 	nentry = X509_NAME_ENTRY_create_by_OBJ(ne,obj,type,bytes,len);
290 	ASN1_OBJECT_free(obj);
291 	return nentry;
292 	}
293 
X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY ** ne,int nid,int type,unsigned char * bytes,int len)294 X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY **ne, int nid,
295 	     int type, unsigned char *bytes, int len)
296 	{
297 	ASN1_OBJECT *obj;
298 	X509_NAME_ENTRY *nentry;
299 
300 	obj=OBJ_nid2obj(nid);
301 	if (obj == NULL)
302 		{
303 		X509err(X509_F_X509_NAME_ENTRY_CREATE_BY_NID,X509_R_UNKNOWN_NID);
304 		return(NULL);
305 		}
306 	nentry = X509_NAME_ENTRY_create_by_OBJ(ne,obj,type,bytes,len);
307 	ASN1_OBJECT_free(obj);
308 	return nentry;
309 	}
310 
X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY ** ne,ASN1_OBJECT * obj,int type,const unsigned char * bytes,int len)311 X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY **ne,
312 	     ASN1_OBJECT *obj, int type, const unsigned char *bytes, int len)
313 	{
314 	X509_NAME_ENTRY *ret;
315 
316 	if ((ne == NULL) || (*ne == NULL))
317 		{
318 		if ((ret=X509_NAME_ENTRY_new()) == NULL)
319 			return(NULL);
320 		}
321 	else
322 		ret= *ne;
323 
324 	if (!X509_NAME_ENTRY_set_object(ret,obj))
325 		goto err;
326 	if (!X509_NAME_ENTRY_set_data(ret,type,bytes,len))
327 		goto err;
328 
329 	if ((ne != NULL) && (*ne == NULL)) *ne=ret;
330 	return(ret);
331 err:
332 	if ((ne == NULL) || (ret != *ne))
333 		X509_NAME_ENTRY_free(ret);
334 	return(NULL);
335 	}
336 
X509_NAME_ENTRY_set_object(X509_NAME_ENTRY * ne,ASN1_OBJECT * obj)337 int X509_NAME_ENTRY_set_object(X509_NAME_ENTRY *ne, ASN1_OBJECT *obj)
338 	{
339 	if ((ne == NULL) || (obj == NULL))
340 		{
341 		X509err(X509_F_X509_NAME_ENTRY_SET_OBJECT,ERR_R_PASSED_NULL_PARAMETER);
342 		return(0);
343 		}
344 	ASN1_OBJECT_free(ne->object);
345 	ne->object=OBJ_dup(obj);
346 	return((ne->object == NULL)?0:1);
347 	}
348 
X509_NAME_ENTRY_set_data(X509_NAME_ENTRY * ne,int type,const unsigned char * bytes,int len)349 int X509_NAME_ENTRY_set_data(X509_NAME_ENTRY *ne, int type,
350 	     const unsigned char *bytes, int len)
351 	{
352 	int i;
353 
354 	if ((ne == NULL) || ((bytes == NULL) && (len != 0))) return(0);
355 	if((type > 0) && (type & MBSTRING_FLAG))
356 		return ASN1_STRING_set_by_NID(&ne->value, bytes,
357 						len, type,
358 					OBJ_obj2nid(ne->object)) ? 1 : 0;
359 	if (len < 0) len=strlen((const char *)bytes);
360 	i=ASN1_STRING_set(ne->value,bytes,len);
361 	if (!i) return(0);
362 	if (type != V_ASN1_UNDEF)
363 		{
364 		if (type == V_ASN1_APP_CHOOSE)
365 			ne->value->type=ASN1_PRINTABLE_type(bytes,len);
366 		else
367 			ne->value->type=type;
368 		}
369 	return(1);
370 	}
371 
X509_NAME_ENTRY_get_object(X509_NAME_ENTRY * ne)372 ASN1_OBJECT *X509_NAME_ENTRY_get_object(X509_NAME_ENTRY *ne)
373 	{
374 	if (ne == NULL) return(NULL);
375 	return(ne->object);
376 	}
377 
X509_NAME_ENTRY_get_data(X509_NAME_ENTRY * ne)378 ASN1_STRING *X509_NAME_ENTRY_get_data(X509_NAME_ENTRY *ne)
379 	{
380 	if (ne == NULL) return(NULL);
381 	return(ne->value);
382 	}
383 
384