1/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
7 *
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to.  The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
14 *
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 * 1. Redistributions of source code must retain the copyright
26 *    notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 *    notice, this list of conditions and the following disclaimer in the
29 *    documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 *    must display the following acknowledgement:
32 *    "This product includes cryptographic software written by
33 *     Eric Young (eay@cryptsoft.com)"
34 *    The word 'cryptographic' can be left out if the rouines from the library
35 *    being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 *    the apps directory (application code) you must include an acknowledgement:
38 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 *
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed.  i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.] */
56
57#include <openssl/asn1.h>
58#include <openssl/err.h>
59#include <openssl/evp.h>
60#include <openssl/obj.h>
61#include <openssl/stack.h>
62#include <openssl/x509.h>
63
64
65int X509_NAME_get_text_by_NID(X509_NAME *name, int nid, char *buf, int len)
66	{
67	const ASN1_OBJECT *obj;
68
69	obj=OBJ_nid2obj(nid);
70	if (obj == NULL) return(-1);
71	return(X509_NAME_get_text_by_OBJ(name,obj,buf,len));
72	}
73
74int X509_NAME_get_text_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj, char *buf,
75	     int len)
76	{
77	int i;
78	ASN1_STRING *data;
79
80	i=X509_NAME_get_index_by_OBJ(name,obj,-1);
81	if (i < 0) return(-1);
82	data=X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name,i));
83	i=(data->length > (len-1))?(len-1):data->length;
84	if (buf == NULL) return(data->length);
85	memcpy(buf,data->data,i);
86	buf[i]='\0';
87	return(i);
88	}
89
90int X509_NAME_entry_count(X509_NAME *name)
91	{
92	if (name == NULL) return(0);
93	return(sk_X509_NAME_ENTRY_num(name->entries));
94	}
95
96int X509_NAME_get_index_by_NID(X509_NAME *name, int nid, int lastpos)
97	{
98	const ASN1_OBJECT *obj;
99
100	obj=OBJ_nid2obj(nid);
101	if (obj == NULL) return(-2);
102	return(X509_NAME_get_index_by_OBJ(name,obj,lastpos));
103	}
104
105/* NOTE: you should be passsing -1, not 0 as lastpos */
106int X509_NAME_get_index_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj,
107	     int lastpos)
108	{
109	int n;
110	X509_NAME_ENTRY *ne;
111	STACK_OF(X509_NAME_ENTRY) *sk;
112
113	if (name == NULL) return(-1);
114	if (lastpos < 0)
115		lastpos= -1;
116	sk=name->entries;
117	n=sk_X509_NAME_ENTRY_num(sk);
118	for (lastpos++; lastpos < n; lastpos++)
119		{
120		ne=sk_X509_NAME_ENTRY_value(sk,lastpos);
121		if (OBJ_cmp(ne->object,obj) == 0)
122			return(lastpos);
123		}
124	return(-1);
125	}
126
127X509_NAME_ENTRY *X509_NAME_get_entry(X509_NAME *name, int loc)
128	{
129	if(name == NULL || loc < 0 || sk_X509_NAME_ENTRY_num(name->entries) <= (size_t) loc)
130		return(NULL);
131	else
132		return(sk_X509_NAME_ENTRY_value(name->entries,loc));
133	}
134
135X509_NAME_ENTRY *X509_NAME_delete_entry(X509_NAME *name, int loc)
136	{
137	X509_NAME_ENTRY *ret;
138	int i,n,set_prev,set_next;
139	STACK_OF(X509_NAME_ENTRY) *sk;
140
141	if (name == NULL || loc < 0 || sk_X509_NAME_ENTRY_num(name->entries) <= (size_t) loc)
142		return(NULL);
143	sk=name->entries;
144	ret=sk_X509_NAME_ENTRY_delete(sk,loc);
145	n=sk_X509_NAME_ENTRY_num(sk);
146	name->modified=1;
147	if (loc == n) return(ret);
148
149	/* else we need to fixup the set field */
150	if (loc != 0)
151		set_prev=(sk_X509_NAME_ENTRY_value(sk,loc-1))->set;
152	else
153		set_prev=ret->set-1;
154	set_next=sk_X509_NAME_ENTRY_value(sk,loc)->set;
155
156	/* set_prev is the previous set
157	 * set is the current set
158	 * set_next is the following
159	 * prev  1 1	1 1	1 1	1 1
160	 * set   1	1	2	2
161	 * next  1 1	2 2	2 2	3 2
162	 * so basically only if prev and next differ by 2, then
163	 * re-number down by 1 */
164	if (set_prev+1 < set_next)
165		for (i=loc; i<n; i++)
166			sk_X509_NAME_ENTRY_value(sk,i)->set--;
167	return(ret);
168	}
169
170int X509_NAME_add_entry_by_OBJ(X509_NAME *name, ASN1_OBJECT *obj, int type,
171			unsigned char *bytes, int len, int loc, int set)
172{
173	X509_NAME_ENTRY *ne;
174	int ret;
175	ne = X509_NAME_ENTRY_create_by_OBJ(NULL, obj, type, bytes, len);
176	if(!ne) return 0;
177	ret = X509_NAME_add_entry(name, ne, loc, set);
178	X509_NAME_ENTRY_free(ne);
179	return ret;
180}
181
182int X509_NAME_add_entry_by_NID(X509_NAME *name, int nid, int type,
183			unsigned char *bytes, int len, int loc, int set)
184{
185	X509_NAME_ENTRY *ne;
186	int ret;
187	ne = X509_NAME_ENTRY_create_by_NID(NULL, nid, type, bytes, len);
188	if(!ne) return 0;
189	ret = X509_NAME_add_entry(name, ne, loc, set);
190	X509_NAME_ENTRY_free(ne);
191	return ret;
192}
193
194int X509_NAME_add_entry_by_txt(X509_NAME *name, const char *field, int type,
195			const unsigned char *bytes, int len, int loc, int set)
196{
197	X509_NAME_ENTRY *ne;
198	int ret;
199	ne = X509_NAME_ENTRY_create_by_txt(NULL, field, type, bytes, len);
200	if(!ne) return 0;
201	ret = X509_NAME_add_entry(name, ne, loc, set);
202	X509_NAME_ENTRY_free(ne);
203	return ret;
204}
205
206/* if set is -1, append to previous set, 0 'a new one', and 1,
207 * prepend to the guy we are about to stomp on. */
208int X509_NAME_add_entry(X509_NAME *name, X509_NAME_ENTRY *ne, int loc,
209	     int set)
210	{
211	X509_NAME_ENTRY *new_name=NULL;
212	int n,i,inc;
213	STACK_OF(X509_NAME_ENTRY) *sk;
214
215	if (name == NULL) return(0);
216	sk=name->entries;
217	n=sk_X509_NAME_ENTRY_num(sk);
218	if (loc > n) loc=n;
219	else if (loc < 0) loc=n;
220
221	name->modified=1;
222
223	if (set == -1)
224		{
225		if (loc == 0)
226			{
227			set=0;
228			inc=1;
229			}
230		else
231			{
232			set=sk_X509_NAME_ENTRY_value(sk,loc-1)->set;
233			inc=0;
234			}
235		}
236	else /* if (set >= 0) */
237		{
238		if (loc >= n)
239			{
240			if (loc != 0)
241				set=sk_X509_NAME_ENTRY_value(sk,loc-1)->set+1;
242			else
243				set=0;
244			}
245		else
246			set=sk_X509_NAME_ENTRY_value(sk,loc)->set;
247		inc=(set == 0)?1:0;
248		}
249
250	if ((new_name=X509_NAME_ENTRY_dup(ne)) == NULL)
251		goto err;
252	new_name->set=set;
253	if (!sk_X509_NAME_ENTRY_insert(sk,new_name,loc))
254		{
255		OPENSSL_PUT_ERROR(X509, X509_NAME_add_entry, ERR_R_MALLOC_FAILURE);
256		goto err;
257		}
258	if (inc)
259		{
260		n=sk_X509_NAME_ENTRY_num(sk);
261		for (i=loc+1; i<n; i++)
262			sk_X509_NAME_ENTRY_value(sk,i-1)->set+=1;
263		}
264	return(1);
265err:
266	if (new_name != NULL)
267		X509_NAME_ENTRY_free(new_name);
268	return(0);
269	}
270
271X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY **ne,
272		const char *field, int type, const unsigned char *bytes, int len)
273	{
274	ASN1_OBJECT *obj;
275	X509_NAME_ENTRY *nentry;
276
277	obj=OBJ_txt2obj(field, 0);
278	if (obj == NULL)
279		{
280		OPENSSL_PUT_ERROR(X509, X509_NAME_ENTRY_create_by_txt, X509_R_INVALID_FIELD_NAME);
281		ERR_add_error_data(2, "name=", field);
282		return(NULL);
283		}
284	nentry = X509_NAME_ENTRY_create_by_OBJ(ne,obj,type,bytes,len);
285	ASN1_OBJECT_free(obj);
286	return nentry;
287	}
288
289X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY **ne, int nid,
290	     int type, unsigned char *bytes, int len)
291	{
292	const ASN1_OBJECT *obj;
293	X509_NAME_ENTRY *nentry;
294
295	obj=OBJ_nid2obj(nid);
296	if (obj == NULL)
297		{
298		OPENSSL_PUT_ERROR(X509, X509_NAME_ENTRY_create_by_NID, X509_R_UNKNOWN_NID);
299		return(NULL);
300		}
301	nentry = X509_NAME_ENTRY_create_by_OBJ(ne,obj,type,bytes,len);
302	/* TODO(fork): remove this? */
303	/* ASN1_OBJECT_free(obj); */
304	return nentry;
305	}
306
307X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY **ne,
308	     const ASN1_OBJECT *obj, int type, const unsigned char *bytes, int len)
309	{
310	X509_NAME_ENTRY *ret;
311
312	if ((ne == NULL) || (*ne == NULL))
313		{
314		if ((ret=X509_NAME_ENTRY_new()) == NULL)
315			return(NULL);
316		}
317	else
318		ret= *ne;
319
320	if (!X509_NAME_ENTRY_set_object(ret,obj))
321		goto err;
322	if (!X509_NAME_ENTRY_set_data(ret,type,bytes,len))
323		goto err;
324
325	if ((ne != NULL) && (*ne == NULL)) *ne=ret;
326	return(ret);
327err:
328	if ((ne == NULL) || (ret != *ne))
329		X509_NAME_ENTRY_free(ret);
330	return(NULL);
331	}
332
333int X509_NAME_ENTRY_set_object(X509_NAME_ENTRY *ne, const ASN1_OBJECT *obj)
334	{
335	if ((ne == NULL) || (obj == NULL))
336		{
337		OPENSSL_PUT_ERROR(X509, X509_NAME_ENTRY_set_object, ERR_R_PASSED_NULL_PARAMETER);
338		return(0);
339		}
340	ASN1_OBJECT_free(ne->object);
341	ne->object=OBJ_dup(obj);
342	return((ne->object == NULL)?0:1);
343	}
344
345int X509_NAME_ENTRY_set_data(X509_NAME_ENTRY *ne, int type,
346	     const unsigned char *bytes, int len)
347	{
348	int i;
349
350	if ((ne == NULL) || ((bytes == NULL) && (len != 0))) return(0);
351	if((type > 0) && (type & MBSTRING_FLAG))
352		return ASN1_STRING_set_by_NID(&ne->value, bytes,
353						len, type,
354					OBJ_obj2nid(ne->object)) ? 1 : 0;
355	if (len < 0) len=strlen((const char *)bytes);
356	i=ASN1_STRING_set(ne->value,bytes,len);
357	if (!i) return(0);
358	if (type != V_ASN1_UNDEF)
359		{
360		if (type == V_ASN1_APP_CHOOSE)
361			ne->value->type=ASN1_PRINTABLE_type(bytes,len);
362		else
363			ne->value->type=type;
364		}
365	return(1);
366	}
367
368ASN1_OBJECT *X509_NAME_ENTRY_get_object(X509_NAME_ENTRY *ne)
369	{
370	if (ne == NULL) return(NULL);
371	return(ne->object);
372	}
373
374ASN1_STRING *X509_NAME_ENTRY_get_data(X509_NAME_ENTRY *ne)
375	{
376	if (ne == NULL) return(NULL);
377	return(ne->value);
378	}
379
380