1/* crypto/objects/obj_dat.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 <ctype.h>
61#include "cryptlib.h"
62#include <openssl/lhash.h>
63#include <openssl/asn1.h>
64#include <openssl/objects.h>
65
66/* obj_dat.h is generated from objects.h by obj_dat.pl */
67#ifndef OPENSSL_NO_OBJECT
68#include "obj_dat.h"
69#else
70/* You will have to load all the objects needed manually in the application */
71#define NUM_NID 0
72#define NUM_SN 0
73#define NUM_LN 0
74#define NUM_OBJ 0
75static unsigned char lvalues[1];
76static ASN1_OBJECT nid_objs[1];
77static ASN1_OBJECT *sn_objs[1];
78static ASN1_OBJECT *ln_objs[1];
79static ASN1_OBJECT *obj_objs[1];
80#endif
81
82static int sn_cmp(const void *a, const void *b);
83static int ln_cmp(const void *a, const void *b);
84static int obj_cmp(const void *a, const void *b);
85#define ADDED_DATA	0
86#define ADDED_SNAME	1
87#define ADDED_LNAME	2
88#define ADDED_NID	3
89
90typedef struct added_obj_st
91	{
92	int type;
93	ASN1_OBJECT *obj;
94	} ADDED_OBJ;
95
96static int new_nid=NUM_NID;
97static LHASH *added=NULL;
98
99static int sn_cmp(const void *a, const void *b)
100	{
101	const ASN1_OBJECT * const *ap = a, * const *bp = b;
102	return(strcmp((*ap)->sn,(*bp)->sn));
103	}
104
105static int ln_cmp(const void *a, const void *b)
106	{
107	const ASN1_OBJECT * const *ap = a, * const *bp = b;
108	return(strcmp((*ap)->ln,(*bp)->ln));
109	}
110
111/* static unsigned long add_hash(ADDED_OBJ *ca) */
112static unsigned long add_hash(const void *ca_void)
113	{
114	const ASN1_OBJECT *a;
115	int i;
116	unsigned long ret=0;
117	unsigned char *p;
118	ADDED_OBJ *ca = (ADDED_OBJ *)ca_void;
119
120	a=ca->obj;
121	switch (ca->type)
122		{
123	case ADDED_DATA:
124		ret=a->length<<20L;
125		p=(unsigned char *)a->data;
126		for (i=0; i<a->length; i++)
127			ret^=p[i]<<((i*3)%24);
128		break;
129	case ADDED_SNAME:
130		ret=lh_strhash(a->sn);
131		break;
132	case ADDED_LNAME:
133		ret=lh_strhash(a->ln);
134		break;
135	case ADDED_NID:
136		ret=a->nid;
137		break;
138	default:
139		/* abort(); */
140		return 0;
141		}
142	ret&=0x3fffffffL;
143	ret|=ca->type<<30L;
144	return(ret);
145	}
146
147/* static int add_cmp(ADDED_OBJ *ca, ADDED_OBJ *cb) */
148static int add_cmp(const void *ca_void, const void *cb_void)
149	{
150	ASN1_OBJECT *a,*b;
151	int i;
152	ADDED_OBJ *ca = (ADDED_OBJ *)ca_void;
153	ADDED_OBJ *cb = (ADDED_OBJ *)cb_void;
154
155	i=ca->type-cb->type;
156	if (i) return(i);
157	a=ca->obj;
158	b=cb->obj;
159	switch (ca->type)
160		{
161	case ADDED_DATA:
162		i=(a->length - b->length);
163		if (i) return(i);
164		return(memcmp(a->data,b->data,a->length));
165	case ADDED_SNAME:
166		if (a->sn == NULL) return(-1);
167		else if (b->sn == NULL) return(1);
168		else return(strcmp(a->sn,b->sn));
169	case ADDED_LNAME:
170		if (a->ln == NULL) return(-1);
171		else if (b->ln == NULL) return(1);
172		else return(strcmp(a->ln,b->ln));
173	case ADDED_NID:
174		return(a->nid-b->nid);
175	default:
176		/* abort(); */
177		return 0;
178		}
179	}
180
181static int init_added(void)
182	{
183	if (added != NULL) return(1);
184	added=lh_new(add_hash,add_cmp);
185	return(added != NULL);
186	}
187
188static void cleanup1(ADDED_OBJ *a)
189	{
190	a->obj->nid=0;
191	a->obj->flags|=ASN1_OBJECT_FLAG_DYNAMIC|
192	                ASN1_OBJECT_FLAG_DYNAMIC_STRINGS|
193			ASN1_OBJECT_FLAG_DYNAMIC_DATA;
194	}
195
196static void cleanup2(ADDED_OBJ *a)
197	{ a->obj->nid++; }
198
199static void cleanup3(ADDED_OBJ *a)
200	{
201	if (--a->obj->nid == 0)
202		ASN1_OBJECT_free(a->obj);
203	OPENSSL_free(a);
204	}
205
206static IMPLEMENT_LHASH_DOALL_FN(cleanup1, ADDED_OBJ *)
207static IMPLEMENT_LHASH_DOALL_FN(cleanup2, ADDED_OBJ *)
208static IMPLEMENT_LHASH_DOALL_FN(cleanup3, ADDED_OBJ *)
209
210void OBJ_cleanup(void)
211	{
212	if (added == NULL) return;
213	added->down_load=0;
214	lh_doall(added,LHASH_DOALL_FN(cleanup1)); /* zero counters */
215	lh_doall(added,LHASH_DOALL_FN(cleanup2)); /* set counters */
216	lh_doall(added,LHASH_DOALL_FN(cleanup3)); /* free objects */
217	lh_free(added);
218	added=NULL;
219	}
220
221int OBJ_new_nid(int num)
222	{
223	int i;
224
225	i=new_nid;
226	new_nid+=num;
227	return(i);
228	}
229
230int OBJ_add_object(const ASN1_OBJECT *obj)
231	{
232	ASN1_OBJECT *o;
233	ADDED_OBJ *ao[4]={NULL,NULL,NULL,NULL},*aop;
234	int i;
235
236	if (added == NULL)
237		if (!init_added()) return(0);
238	if ((o=OBJ_dup(obj)) == NULL) goto err;
239	if (!(ao[ADDED_NID]=(ADDED_OBJ *)OPENSSL_malloc(sizeof(ADDED_OBJ)))) goto err2;
240	if ((o->length != 0) && (obj->data != NULL))
241		if (!(ao[ADDED_DATA]=(ADDED_OBJ *)OPENSSL_malloc(sizeof(ADDED_OBJ)))) goto err2;
242	if (o->sn != NULL)
243		if (!(ao[ADDED_SNAME]=(ADDED_OBJ *)OPENSSL_malloc(sizeof(ADDED_OBJ)))) goto err2;
244	if (o->ln != NULL)
245		if (!(ao[ADDED_LNAME]=(ADDED_OBJ *)OPENSSL_malloc(sizeof(ADDED_OBJ)))) goto err2;
246
247	for (i=ADDED_DATA; i<=ADDED_NID; i++)
248		{
249		if (ao[i] != NULL)
250			{
251			ao[i]->type=i;
252			ao[i]->obj=o;
253			aop=(ADDED_OBJ *)lh_insert(added,ao[i]);
254			/* memory leak, buit should not normally matter */
255			if (aop != NULL)
256				OPENSSL_free(aop);
257			}
258		}
259	o->flags&= ~(ASN1_OBJECT_FLAG_DYNAMIC|ASN1_OBJECT_FLAG_DYNAMIC_STRINGS|
260			ASN1_OBJECT_FLAG_DYNAMIC_DATA);
261
262	return(o->nid);
263err2:
264	OBJerr(OBJ_F_OBJ_ADD_OBJECT,ERR_R_MALLOC_FAILURE);
265err:
266	for (i=ADDED_DATA; i<=ADDED_NID; i++)
267		if (ao[i] != NULL) OPENSSL_free(ao[i]);
268	if (o != NULL) OPENSSL_free(o);
269	return(NID_undef);
270	}
271
272ASN1_OBJECT *OBJ_nid2obj(int n)
273	{
274	ADDED_OBJ ad,*adp;
275	ASN1_OBJECT ob;
276
277	if ((n >= 0) && (n < NUM_NID))
278		{
279		if ((n != NID_undef) && (nid_objs[n].nid == NID_undef))
280			{
281			OBJerr(OBJ_F_OBJ_NID2OBJ,OBJ_R_UNKNOWN_NID);
282			return(NULL);
283			}
284		return((ASN1_OBJECT *)&(nid_objs[n]));
285		}
286	else if (added == NULL)
287		return(NULL);
288	else
289		{
290		ad.type=ADDED_NID;
291		ad.obj= &ob;
292		ob.nid=n;
293		adp=(ADDED_OBJ *)lh_retrieve(added,&ad);
294		if (adp != NULL)
295			return(adp->obj);
296		else
297			{
298			OBJerr(OBJ_F_OBJ_NID2OBJ,OBJ_R_UNKNOWN_NID);
299			return(NULL);
300			}
301		}
302	}
303
304const char *OBJ_nid2sn(int n)
305	{
306	ADDED_OBJ ad,*adp;
307	ASN1_OBJECT ob;
308
309	if ((n >= 0) && (n < NUM_NID))
310		{
311		if ((n != NID_undef) && (nid_objs[n].nid == NID_undef))
312			{
313			OBJerr(OBJ_F_OBJ_NID2SN,OBJ_R_UNKNOWN_NID);
314			return(NULL);
315			}
316		return(nid_objs[n].sn);
317		}
318	else if (added == NULL)
319		return(NULL);
320	else
321		{
322		ad.type=ADDED_NID;
323		ad.obj= &ob;
324		ob.nid=n;
325		adp=(ADDED_OBJ *)lh_retrieve(added,&ad);
326		if (adp != NULL)
327			return(adp->obj->sn);
328		else
329			{
330			OBJerr(OBJ_F_OBJ_NID2SN,OBJ_R_UNKNOWN_NID);
331			return(NULL);
332			}
333		}
334	}
335
336const char *OBJ_nid2ln(int n)
337	{
338	ADDED_OBJ ad,*adp;
339	ASN1_OBJECT ob;
340
341	if ((n >= 0) && (n < NUM_NID))
342		{
343		if ((n != NID_undef) && (nid_objs[n].nid == NID_undef))
344			{
345			OBJerr(OBJ_F_OBJ_NID2LN,OBJ_R_UNKNOWN_NID);
346			return(NULL);
347			}
348		return(nid_objs[n].ln);
349		}
350	else if (added == NULL)
351		return(NULL);
352	else
353		{
354		ad.type=ADDED_NID;
355		ad.obj= &ob;
356		ob.nid=n;
357		adp=(ADDED_OBJ *)lh_retrieve(added,&ad);
358		if (adp != NULL)
359			return(adp->obj->ln);
360		else
361			{
362			OBJerr(OBJ_F_OBJ_NID2LN,OBJ_R_UNKNOWN_NID);
363			return(NULL);
364			}
365		}
366	}
367
368int OBJ_obj2nid(const ASN1_OBJECT *a)
369	{
370	ASN1_OBJECT **op;
371	ADDED_OBJ ad,*adp;
372
373	if (a == NULL)
374		return(NID_undef);
375	if (a->nid != 0)
376		return(a->nid);
377
378	if (added != NULL)
379		{
380		ad.type=ADDED_DATA;
381		ad.obj=(ASN1_OBJECT *)a; /* XXX: ugly but harmless */
382		adp=(ADDED_OBJ *)lh_retrieve(added,&ad);
383		if (adp != NULL) return (adp->obj->nid);
384		}
385	op=(ASN1_OBJECT **)OBJ_bsearch((char *)&a,(char *)obj_objs,NUM_OBJ,
386		sizeof(ASN1_OBJECT *),obj_cmp);
387	if (op == NULL)
388		return(NID_undef);
389	return((*op)->nid);
390	}
391
392/* Convert an object name into an ASN1_OBJECT
393 * if "noname" is not set then search for short and long names first.
394 * This will convert the "dotted" form into an object: unlike OBJ_txt2nid
395 * it can be used with any objects, not just registered ones.
396 */
397
398ASN1_OBJECT *OBJ_txt2obj(const char *s, int no_name)
399	{
400	int nid = NID_undef;
401	ASN1_OBJECT *op=NULL;
402	unsigned char *buf,*p;
403	int i, j;
404
405	if(!no_name) {
406		if( ((nid = OBJ_sn2nid(s)) != NID_undef) ||
407			((nid = OBJ_ln2nid(s)) != NID_undef) )
408					return OBJ_nid2obj(nid);
409	}
410
411	/* Work out size of content octets */
412	i=a2d_ASN1_OBJECT(NULL,0,s,-1);
413	if (i <= 0) {
414		/* Clear the error */
415		ERR_get_error();
416		return NULL;
417	}
418	/* Work out total size */
419	j = ASN1_object_size(0,i,V_ASN1_OBJECT);
420
421	if((buf=(unsigned char *)OPENSSL_malloc(j)) == NULL) return NULL;
422
423	p = buf;
424	/* Write out tag+length */
425	ASN1_put_object(&p,0,i,V_ASN1_OBJECT,V_ASN1_UNIVERSAL);
426	/* Write out contents */
427	a2d_ASN1_OBJECT(p,i,s,-1);
428
429	p=buf;
430	op=d2i_ASN1_OBJECT(NULL,&p,j);
431	OPENSSL_free(buf);
432	return op;
433	}
434
435int OBJ_obj2txt(char *buf, int buf_len, const ASN1_OBJECT *a, int no_name)
436{
437	int i,idx=0,n=0,len,nid;
438	unsigned long l;
439	unsigned char *p;
440	const char *s;
441	char tbuf[DECIMAL_SIZE(i)+DECIMAL_SIZE(l)+2];
442
443	if (buf_len <= 0) return(0);
444
445	if ((a == NULL) || (a->data == NULL)) {
446		buf[0]='\0';
447		return(0);
448	}
449
450	if (no_name || (nid=OBJ_obj2nid(a)) == NID_undef) {
451		len=a->length;
452		p=a->data;
453
454		idx=0;
455		l=0;
456		while (idx < a->length) {
457			l|=(p[idx]&0x7f);
458			if (!(p[idx] & 0x80)) break;
459			l<<=7L;
460			idx++;
461		}
462		idx++;
463		i=(int)(l/40);
464		if (i > 2) i=2;
465		l-=(long)(i*40);
466
467		BIO_snprintf(tbuf,sizeof tbuf,"%d.%lu",i,l);
468		i=strlen(tbuf);
469		BUF_strlcpy(buf,tbuf,buf_len);
470		buf_len-=i;
471		buf+=i;
472		n+=i;
473
474		l=0;
475		for (; idx<len; idx++) {
476			l|=p[idx]&0x7f;
477			if (!(p[idx] & 0x80)) {
478				BIO_snprintf(tbuf,sizeof tbuf,".%lu",l);
479				i=strlen(tbuf);
480				if (buf_len > 0)
481					BUF_strlcpy(buf,tbuf,buf_len);
482				buf_len-=i;
483				buf+=i;
484				n+=i;
485				l=0;
486			}
487			l<<=7L;
488		}
489	} else {
490		s=OBJ_nid2ln(nid);
491		if (s == NULL)
492			s=OBJ_nid2sn(nid);
493		BUF_strlcpy(buf,s,buf_len);
494		n=strlen(s);
495	}
496	return(n);
497}
498
499int OBJ_txt2nid(const char *s)
500{
501	ASN1_OBJECT *obj;
502	int nid;
503	obj = OBJ_txt2obj(s, 0);
504	nid = OBJ_obj2nid(obj);
505	ASN1_OBJECT_free(obj);
506	return nid;
507}
508
509int OBJ_ln2nid(const char *s)
510	{
511	ASN1_OBJECT o,*oo= &o,**op;
512	ADDED_OBJ ad,*adp;
513
514	o.ln=s;
515	if (added != NULL)
516		{
517		ad.type=ADDED_LNAME;
518		ad.obj= &o;
519		adp=(ADDED_OBJ *)lh_retrieve(added,&ad);
520		if (adp != NULL) return (adp->obj->nid);
521		}
522	op=(ASN1_OBJECT **)OBJ_bsearch((char *)&oo,(char *)ln_objs,NUM_LN,
523		sizeof(ASN1_OBJECT *),ln_cmp);
524	if (op == NULL) return(NID_undef);
525	return((*op)->nid);
526	}
527
528int OBJ_sn2nid(const char *s)
529	{
530	ASN1_OBJECT o,*oo= &o,**op;
531	ADDED_OBJ ad,*adp;
532
533	o.sn=s;
534	if (added != NULL)
535		{
536		ad.type=ADDED_SNAME;
537		ad.obj= &o;
538		adp=(ADDED_OBJ *)lh_retrieve(added,&ad);
539		if (adp != NULL) return (adp->obj->nid);
540		}
541	op=(ASN1_OBJECT **)OBJ_bsearch((char *)&oo,(char *)sn_objs,NUM_SN,
542		sizeof(ASN1_OBJECT *),sn_cmp);
543	if (op == NULL) return(NID_undef);
544	return((*op)->nid);
545	}
546
547static int obj_cmp(const void *ap, const void *bp)
548	{
549	int j;
550	ASN1_OBJECT *a= *(ASN1_OBJECT **)ap;
551	ASN1_OBJECT *b= *(ASN1_OBJECT **)bp;
552
553	j=(a->length - b->length);
554        if (j) return(j);
555	return(memcmp(a->data,b->data,a->length));
556        }
557
558const char *OBJ_bsearch(const char *key, const char *base, int num, int size,
559	int (*cmp)(const void *, const void *))
560	{
561	int l,h,i,c;
562	const char *p;
563
564	if (num == 0) return(NULL);
565	l=0;
566	h=num;
567	while (l < h)
568		{
569		i=(l+h)/2;
570		p= &(base[i*size]);
571		c=(*cmp)(key,p);
572		if (c < 0)
573			h=i;
574		else if (c > 0)
575			l=i+1;
576		else
577			return(p);
578		}
579#ifdef CHARSET_EBCDIC
580/* THIS IS A KLUDGE - Because the *_obj is sorted in ASCII order, and
581 * I don't have perl (yet), we revert to a *LINEAR* search
582 * when the object wasn't found in the binary search.
583 */
584	for (i=0; i<num; ++i) {
585		p= &(base[i*size]);
586		if ((*cmp)(key,p) == 0)
587			return p;
588	}
589#endif
590	return(NULL);
591	}
592
593int OBJ_create_objects(BIO *in)
594	{
595	MS_STATIC char buf[512];
596	int i,num=0;
597	char *o,*s,*l=NULL;
598
599	for (;;)
600		{
601		s=o=NULL;
602		i=BIO_gets(in,buf,512);
603		if (i <= 0) return(num);
604		buf[i-1]='\0';
605		if (!isalnum((unsigned char)buf[0])) return(num);
606		o=s=buf;
607		while (isdigit((unsigned char)*s) || (*s == '.'))
608			s++;
609		if (*s != '\0')
610			{
611			*(s++)='\0';
612			while (isspace((unsigned char)*s))
613				s++;
614			if (*s == '\0')
615				s=NULL;
616			else
617				{
618				l=s;
619				while ((*l != '\0') && !isspace((unsigned char)*l))
620					l++;
621				if (*l != '\0')
622					{
623					*(l++)='\0';
624					while (isspace((unsigned char)*l))
625						l++;
626					if (*l == '\0') l=NULL;
627					}
628				else
629					l=NULL;
630				}
631			}
632		else
633			s=NULL;
634		if ((o == NULL) || (*o == '\0')) return(num);
635		if (!OBJ_create(o,s,l)) return(num);
636		num++;
637		}
638	/* return(num); */
639	}
640
641int OBJ_create(const char *oid, const char *sn, const char *ln)
642	{
643	int ok=0;
644	ASN1_OBJECT *op=NULL;
645	unsigned char *buf;
646	int i;
647
648	i=a2d_ASN1_OBJECT(NULL,0,oid,-1);
649	if (i <= 0) return(0);
650
651	if ((buf=(unsigned char *)OPENSSL_malloc(i)) == NULL)
652		{
653		OBJerr(OBJ_F_OBJ_CREATE,ERR_R_MALLOC_FAILURE);
654		return(0);
655		}
656	i=a2d_ASN1_OBJECT(buf,i,oid,-1);
657	if (i == 0)
658		goto err;
659	op=(ASN1_OBJECT *)ASN1_OBJECT_create(OBJ_new_nid(1),buf,i,sn,ln);
660	if (op == NULL)
661		goto err;
662	ok=OBJ_add_object(op);
663err:
664	ASN1_OBJECT_free(op);
665	OPENSSL_free(buf);
666	return(ok);
667	}
668
669