2 * Copyright (C) 2000,2001,2002,2003 Fabio Fiorina
4 * This file is part of LIBASN1.
6 * The LIBTASN1 library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 /*****************************************************/
23 /* Description: Functions with the read and write */
25 /*****************************************************/
30 #include "parser_aux.h"
33 #include "structure.h"
36 _asn1_hierarchical_name(node_asn
*node
,char *name
,int name_size
)
47 _asn1_str_cpy(tmp_name
,sizeof(tmp_name
),name
),
49 _asn1_str_cpy(name
,name_size
,p
->name
);
50 _asn1_str_cat(name
,name_size
,".");
51 _asn1_str_cat(name
,name_size
,tmp_name
);
56 if(name
[0]==0) _asn1_str_cpy(name
,name_size
,"ROOT");
60 /******************************************************************/
61 /* Function : _asn1_convert_integer */
62 /* Description: converts an integer from a null terminated string */
63 /* to der decoding. The convertion from a null */
64 /* terminated string to an integer is made with */
65 /* the 'strtol' function. */
67 /* value: null terminated string to convert. */
68 /* value_out: convertion result (memory must be already */
70 /* value_out_size: number of bytes of value_out. */
71 /* len: number of significant byte of value_out. */
72 /* Return: ASN1_MEM_ERROR or ASN1_SUCCESS */
73 /******************************************************************/
75 _asn1_convert_integer(const char *value
,unsigned char *value_out
,int value_out_size
, int *len
)
78 unsigned char val
[SIZEOF_UNSIGNED_LONG_INT
];
82 valtmp
=strtol(value
,NULL
,10);
84 for(k
=0;k
<SIZEOF_UNSIGNED_LONG_INT
;k
++){
85 val
[SIZEOF_UNSIGNED_LONG_INT
-k
-1]=(valtmp
>> (8*k
)) & 0xFF;
88 if(val
[0]&0x80) negative
=1;
91 for(k
=0;k
<SIZEOF_UNSIGNED_LONG_INT
-1;k
++){
92 if(negative
&& (val
[k
]!=0xFF)) break;
93 else if(!negative
&& val
[k
]) break;
96 if((negative
&& !(val
[k
]&0x80)) ||
97 (!negative
&& (val
[k
]&0x80))) k
--;
99 *len
=SIZEOF_UNSIGNED_LONG_INT
-k
;
101 if (SIZEOF_UNSIGNED_LONG_INT
-k
> value_out_size
)
102 /* VALUE_OUT is too short to contain the value conversion */
103 return ASN1_MEM_ERROR
;
105 for(k2
=k
;k2
<SIZEOF_UNSIGNED_LONG_INT
;k2
++)
106 value_out
[k2
-k
]=val
[k2
];
109 #ifdef LIBTASN1_DEBUG_INTEGER
110 _libtasn1_log("_asn1_convert_integer: valueIn=%s, lenOut=%d",value
,*len
);
111 for(k
=0;k
<SIZEOF_UNSIGNED_LONG_INT
;k
++)
112 _libtasn1_log(", vOut[%d]=%d",k
,value_out
[k
]);
122 _asn1_append_sequence_set(node_asn
*node
)
128 if(!node
|| !(node
->down
)) return ASN1_GENERIC_ERROR
;
131 while((type_field(p
->type
)==TYPE_TAG
) || (type_field(p
->type
)==TYPE_SIZE
)) p
=p
->right
;
132 p2
=_asn1_copy_structure3(p
);
133 while(p
->right
) p
=p
->right
;
134 _asn1_set_right(p
,p2
);
136 if(p
->name
==NULL
) _asn1_str_cpy(temp
,sizeof(temp
),"?1");
138 n
=strtol(p
->name
+1,NULL
,0);
141 _asn1_ltostr(n
,temp
+1);
143 _asn1_set_name(p2
,temp
);
144 /* p2->type |= CONST_OPTION; */
151 * asn1_write_value - Set the value of one element inside a structure.
152 * @node_root: pointer to a structure
153 * @name: the name of the element inside the structure that you want to set.
154 * @ivalue: vector used to specify the value to set. If len is >0,
155 * VALUE must be a two's complement form integer.
156 * if len=0 *VALUE must be a null terminated string with an integer value.
157 * @len: number of bytes of *value to use to set the value: value[0]..value[len-1]
158 * or 0 if value is a null terminated string
161 * Set the value of one element inside a structure.
165 * ASN1_SUCCESS\: set value OK
167 * ASN1_ELEMENT_NOT_FOUND\: NAME is not a valid element.
169 * ASN1_VALUE_NOT_VALID\: VALUE has a wrong format.
172 * description for each type
175 * \item INTEGER\: VALUE must contain a two's complement form integer.
176 * value[0]=0xFF , len=1 -> integer=-1
177 * value[0]=0xFF value[1]=0xFF , len=2 -> integer=-1
178 * value[0]=0x01 , len=1 -> integer= 1
179 * value[0]=0x00 value[1]=0x01 , len=2 -> integer= 1
180 * value="123" , len=0 -> integer= 123
182 * \item ENUMERATED\: as INTEGER (but only with not negative numbers)
184 * \item BOOLEAN\: VALUE must be the null terminated string "TRUE" or "FALSE" and LEN != 0
185 * value="TRUE" , len=1 -> boolean=TRUE
186 * value="FALSE" , len=1 -> boolean=FALSE
188 * \item OBJECT IDENTIFIER\: VALUE must be a null terminated string with each number separated by
189 * a dot (e.g. "1.2.3.543.1").
191 * value="1 2 840 10040 4 3" , len=1 -> OID=dsa-with-sha
193 * \item UTCTime\: VALUE must be a null terminated string in one of these formats\:
194 * "YYMMDDhhmmssZ" "YYMMDDhhmmssZ" "YYMMDDhhmmss+hh'mm'" "YYMMDDhhmmss-hh'mm'"
195 * "YYMMDDhhmm+hh'mm'" "YYMMDDhhmm-hh'mm'".
197 * value="9801011200Z" , len=1 -> time=Jannuary 1st, 1998 at 12h 00m Greenwich Mean Time
199 * \item GeneralizedTime\: VALUE must be in one of this format\:
200 * "YYYYMMDDhhmmss.sZ" "YYYYMMDDhhmmss.sZ" "YYYYMMDDhhmmss.s+hh'mm'"
201 * "YYYYMMDDhhmmss.s-hh'mm'" "YYYYMMDDhhmm+hh'mm'" "YYYYMMDDhhmm-hh'mm'"
202 * where ss.s indicates the seconds with any precision like "10.1" or "01.02".
204 * value="2001010112001.12-0700" , len=1 -> time=Jannuary 1st, 2001 at 12h 00m 01.12s
205 * Pacific Daylight Time
207 * \item OCTET STRING\: VALUE contains the octet string and LEN is the number of octets.
208 * value="$\backslash$x01$\backslash$x02$\backslash$x03" , len=3 -> three bytes octet string
210 * \item GeneralString\: VALUE contains the generalstring and LEN is the number of octets.
211 * value="$\backslash$x01$\backslash$x02$\backslash$x03" , len=3 -> three bytes generalstring
213 * \item BIT STRING\: VALUE contains the bit string organized by bytes and LEN is the number of bits.
214 * value="$\backslash$xCF" , len=6 -> bit string="110011" (six bits)
216 * \item CHOICE\: if NAME indicates a choice type, VALUE must specify one of the alternatives with a
217 * null terminated string. LEN != 0
219 * result=asn1_write_value(cert,"certificate1.tbsCertificate.subject","rdnSequence",1);
221 * \item ANY\: VALUE indicates the der encoding of a structure.
224 * \item SEQUENCE OF\: VALUE must be the null terminated string "NEW" and LEN != 0. With this
225 * instruction another element is appended in the sequence. The name of this
226 * element will be "?1" if it's the first one, "?2" for the second and so on.
230 * result=asn1_write_value(cert,"certificate1.tbsCertificate.subject.rdnSequence","NEW",1);
232 * \item SET OF\: the same as SEQUENCE OF.
235 * result=asn1_write_value(cert,"tbsCertificate.subject.rdnSequence.?LAST","NEW",1);
238 * If an element is OPTIONAL and you want to delete it, you must use the value=NULL and len=0.
242 * result=asn1_write_value(cert,"tbsCertificate.issuerUniqueID",NULL,0);
246 asn1_write_value(node_asn
*node_root
,const char *name
,
247 const void *ivalue
,int len
)
249 node_asn
*node
,*p
,*p2
;
250 unsigned char *temp
,*value_temp
=NULL
,*default_temp
=NULL
;
251 int len2
,k
,k2
,negative
;
252 const unsigned char* value
= ivalue
;
254 node
=_asn1_find_node(node_root
,name
);
255 if(node
==NULL
) return ASN1_ELEMENT_NOT_FOUND
;
257 if((node
->type
& CONST_OPTION
) && (value
==NULL
) && (len
==0)){
258 asn1_delete_structure(&node
);
262 if((type_field(node
->type
) == TYPE_SEQUENCE_OF
) && (value
== NULL
) && (len
==0)){
264 while((type_field(p
->type
)==TYPE_TAG
) || (type_field(p
->type
)==TYPE_SIZE
)) p
=p
->right
;
267 asn1_delete_structure(&p
->right
);
272 switch(type_field(node
->type
)){
274 if(!strcmp(value
,"TRUE")){
275 if(node
->type
&CONST_DEFAULT
){
277 while(type_field(p
->type
)!=TYPE_DEFAULT
) p
=p
->right
;
278 if(p
->type
&CONST_TRUE
) _asn1_set_value(node
,NULL
,0);
279 else _asn1_set_value(node
,"T",1);
281 else _asn1_set_value(node
,"T",1);
283 else if(!strcmp(value
,"FALSE")){
284 if(node
->type
&CONST_DEFAULT
){
286 while(type_field(p
->type
)!=TYPE_DEFAULT
) p
=p
->right
;
287 if(p
->type
&CONST_FALSE
) _asn1_set_value(node
,NULL
,0);
288 else _asn1_set_value(node
,"F",1);
290 else _asn1_set_value(node
,"F",1);
292 else return ASN1_VALUE_NOT_VALID
;
294 case TYPE_INTEGER
: case TYPE_ENUMERATED
:
296 if((isdigit(value
[0])) || (value
[0]=='-')){
297 value_temp
=(unsigned char *)_asn1_alloca(SIZEOF_UNSIGNED_LONG_INT
);
298 if (value_temp
==NULL
) return ASN1_MEM_ALLOC_ERROR
;
300 _asn1_convert_integer(value
,value_temp
,SIZEOF_UNSIGNED_LONG_INT
, &len
);
302 else{ /* is an identifier like v1 */
303 if(!(node
->type
&CONST_LIST
)) return ASN1_VALUE_NOT_VALID
;
306 if(type_field(p
->type
)==TYPE_CONSTANT
){
307 if((p
->name
) && (!strcmp(p
->name
,value
))){
308 value_temp
=(unsigned char *)_asn1_alloca(SIZEOF_UNSIGNED_LONG_INT
);
309 if (value_temp
==NULL
) return ASN1_MEM_ALLOC_ERROR
;
311 _asn1_convert_integer(p
->value
,value_temp
,SIZEOF_UNSIGNED_LONG_INT
, &len
);
317 if(p
==NULL
) return ASN1_VALUE_NOT_VALID
;
321 value_temp
=(unsigned char *)_asn1_alloca(len
);
322 if (value_temp
==NULL
) return ASN1_MEM_ALLOC_ERROR
;
323 memcpy(value_temp
,value
,len
);
327 if(value_temp
[0]&0x80) negative
=1;
330 if(negative
&& (type_field(node
->type
)==TYPE_ENUMERATED
))
331 {_asn1_afree(value_temp
);return ASN1_VALUE_NOT_VALID
;}
334 if(negative
&& (value_temp
[k
]!=0xFF)) break;
335 else if(!negative
&& value_temp
[k
]) break;
337 if((negative
&& !(value_temp
[k
]&0x80)) ||
338 (!negative
&& (value_temp
[k
]&0x80))) k
--;
340 _asn1_length_der(len
-k
,NULL
,&len2
);
341 temp
=(unsigned char *)_asn1_alloca(len
-k
+len2
);
342 if (temp
==NULL
) return ASN1_MEM_ALLOC_ERROR
;
344 _asn1_octet_der(value_temp
+k
,len
-k
,temp
,&len2
);
345 _asn1_set_value(node
,temp
,len2
);
350 if(node
->type
&CONST_DEFAULT
){
352 while(type_field(p
->type
)!=TYPE_DEFAULT
) p
=p
->right
;
353 if((isdigit(p
->value
[0])) || (p
->value
[0]=='-')){
354 default_temp
=(unsigned char *)_asn1_alloca(SIZEOF_UNSIGNED_LONG_INT
);
355 if (default_temp
==NULL
) return ASN1_MEM_ALLOC_ERROR
;
357 _asn1_convert_integer(p
->value
,default_temp
,SIZEOF_UNSIGNED_LONG_INT
,&len2
);
359 else{ /* is an identifier like v1 */
360 if(!(node
->type
&CONST_LIST
)) return ASN1_VALUE_NOT_VALID
;
363 if(type_field(p2
->type
)==TYPE_CONSTANT
){
364 if((p2
->name
) && (!strcmp(p2
->name
,p
->value
))){
365 default_temp
=(unsigned char *)_asn1_alloca(SIZEOF_UNSIGNED_LONG_INT
);
366 if (default_temp
==NULL
) return ASN1_MEM_ALLOC_ERROR
;
368 _asn1_convert_integer(p2
->value
,default_temp
,SIZEOF_UNSIGNED_LONG_INT
,&len2
);
374 if(p2
==NULL
) return ASN1_VALUE_NOT_VALID
;
379 for(k2
=0;k2
<len2
;k2
++)
380 if(value_temp
[k
+k2
]!=default_temp
[k2
]){
383 if(k2
==len2
) _asn1_set_value(node
,NULL
,0);
385 _asn1_afree(default_temp
);
387 _asn1_afree(value_temp
);
390 for(k
=0;k
<strlen(value
);k
++)
391 if((!isdigit(value
[k
])) && (value
[k
]!='.') && (value
[k
]!='+'))
392 return ASN1_VALUE_NOT_VALID
;
393 if(node
->type
&CONST_DEFAULT
){
395 while(type_field(p
->type
)!=TYPE_DEFAULT
) p
=p
->right
;
396 if(!strcmp(value
,p
->value
)){
397 _asn1_set_value(node
,NULL
,0);
401 _asn1_set_value(node
,value
,strlen(value
)+1);
404 if(node
->type
&CONST_UTC
){
405 if(strlen(value
)<11) return ASN1_VALUE_NOT_VALID
;
407 if(!isdigit(value
[k
])) return ASN1_VALUE_NOT_VALID
;
408 switch(strlen(value
)){
410 if(value
[10]!='Z') return ASN1_VALUE_NOT_VALID
;
413 if((!isdigit(value
[10])) || (!isdigit(value
[11])) ||
414 (value
[12]!='Z')) return ASN1_VALUE_NOT_VALID
;
417 if((value
[10]!='+') && (value
[10]!='-')) return ASN1_VALUE_NOT_VALID
;
419 if(!isdigit(value
[k
])) return ASN1_VALUE_NOT_VALID
;
422 if((!isdigit(value
[10])) || (!isdigit(value
[11])))
423 return ASN1_VALUE_NOT_VALID
;
424 if((value
[12]!='+') && (value
[12]!='-')) return ASN1_VALUE_NOT_VALID
;
426 if(!isdigit(value
[k
])) return ASN1_VALUE_NOT_VALID
;
429 return ASN1_VALUE_NOT_FOUND
;
431 _asn1_set_value(node
,value
,strlen(value
)+1);
433 else{ /* GENERALIZED TIME */
434 if(value
) _asn1_set_value(node
,value
,strlen(value
)+1);
437 case TYPE_OCTET_STRING
:
440 _asn1_length_der(len
,NULL
,&len2
);
441 temp
=(unsigned char *)_asn1_alloca(len
+len2
);
442 if (temp
==NULL
) return ASN1_MEM_ALLOC_ERROR
;
444 _asn1_octet_der(value
,len
,temp
,&len2
);
445 _asn1_set_value(node
,temp
,len2
);
448 case TYPE_GENERALSTRING
:
451 _asn1_length_der(len
,NULL
,&len2
);
452 temp
=(unsigned char *)_asn1_alloca(len
+len2
);
453 if (temp
==NULL
) return ASN1_MEM_ALLOC_ERROR
;
455 _asn1_octet_der(value
,len
,temp
,&len2
);
456 _asn1_set_value(node
,temp
,len2
);
459 case TYPE_BIT_STRING
:
462 _asn1_length_der((len
>>3)+2,NULL
,&len2
);
463 temp
=(unsigned char *)_asn1_alloca((len
>>3)+2+len2
);
464 if (temp
==NULL
) return ASN1_MEM_ALLOC_ERROR
;
466 _asn1_bit_der(value
,len
,temp
,&len2
);
467 _asn1_set_value(node
,temp
,len2
);
473 if(!strcmp(p
->name
,value
)){
476 if(p2
!=p
){asn1_delete_structure(&p2
); p2
=node
->down
;}
483 if(!p
) return ASN1_ELEMENT_NOT_FOUND
;
486 _asn1_length_der(len
,NULL
,&len2
);
487 temp
=(unsigned char *)_asn1_alloca(len
+len2
);
488 if (temp
==NULL
) return ASN1_MEM_ALLOC_ERROR
;
490 _asn1_octet_der(value
,len
,temp
,&len2
);
491 _asn1_set_value(node
,temp
,len2
);
494 case TYPE_SEQUENCE_OF
: case TYPE_SET_OF
:
495 if(strcmp(value
,"NEW")) return ASN1_VALUE_NOT_VALID
;
496 _asn1_append_sequence_set(node
);
499 return ASN1_ELEMENT_NOT_FOUND
;
507 #define PUT_VALUE( ptr, ptr_size, data, data_size) \
509 if (ptr_size < data_size) { \
510 return ASN1_MEM_ERROR; \
512 memcpy( ptr, data, data_size); \
515 #define PUT_STR_VALUE( ptr, ptr_size, data) \
516 *len = strlen(data) + 1; \
517 if (ptr_size < *len) { \
518 return ASN1_MEM_ERROR; \
520 /* this strcpy is checked */ \
524 #define ADD_STR_VALUE( ptr, ptr_size, data) \
525 *len = strlen(data) + 1; \
526 if (ptr_size < strlen(ptr)+(*len)) { \
527 return ASN1_MEM_ERROR; \
529 /* this strcat is checked */ \
534 * asn1_read_value - Returns the value of one element inside a structure
535 * @root: pointer to a structure
536 * @name: the name of the element inside a structure that you want to read.
537 * @ivalue: vector that will contain the element's content.
538 * VALUE must be a pointer to memory cells already allocated.
539 * @len: number of bytes of *value: value[0]..value[len-1]. Initialy holds the sizeof value.
543 * Returns the value of one element inside a structure.
547 * ASN1_SUCCESS\: set value OK
549 * ASN1_ELEMENT_NOT_FOUND\: NAME is not a valid element.
551 * ASN1_VALUE_NOT_FOUND\: there isn't any value for the element selected.
553 * ASN1_MEM_ERROR\: the value vector isn't big enough to store the result.
554 * In this case LEN will contain the number of bytes needed.
557 * a description for each type
560 * \item INTEGER\: VALUE will contain a two's complement form integer.
561 * integer=-1 -> value[0]=0xFF , len=1
562 * integer=1 -> value[0]=0x01 , len=1
564 * \item ENUMERATED\: as INTEGER (but only with not negative numbers)
566 * \item BOOLEAN\: VALUE will be the null terminated string "TRUE" or "FALSE" and LEN=5 or LEN=6
568 * \item OBJECT IDENTIFIER\: VALUE will be a null terminated string with each number separated by
569 * a dot (i.e. "1.2.3.543.1").
570 * LEN = strlen(VALUE)+1
572 * \item UTCTime\: VALUE will be a null terminated string in one of these formats\:
573 * "YYMMDDhhmmss+hh'mm'" or "YYMMDDhhmmss-hh'mm'"
574 * LEN=strlen(VALUE)+1
576 * \item GeneralizedTime\: VALUE will be a null terminated string in the same format used to set
579 * \item OCTET STRING\: VALUE will contain the octet string and LEN will be the number of octets.
581 * \item GeneralString\: VALUE will contain the generalstring and LEN will be the number of octets.
583 * \item BIT STRING\: VALUE will contain the bit string organized by bytes and LEN will be the
586 * \item CHOICE\: if NAME indicates a choice type, VALUE will specify the alternative selected
588 * \item ANY\: if NAME indicates an any type, VALUE will indicate the DER encoding of the structure
592 * If an element is OPTIONAL and the function "read_value" returns ASN1_ELEMENT_NOT_FOUND, it
593 * means that this element wasn't present in the der encoding that created the structure.
594 * The first element of a SEQUENCE_OF or SET_OF is named "?1". The second one "?2" and so on.
598 asn1_read_value(node_asn
*root
,const char *name
,void* ivalue
, int *len
)
600 node_asn
*node
,*p
,*p2
;
602 int value_size
= *len
;
603 unsigned char* value
= ivalue
;
605 node
=_asn1_find_node(root
,name
);
606 if(node
==NULL
) return ASN1_ELEMENT_NOT_FOUND
;
608 if((type_field(node
->type
)!=TYPE_NULL
) &&
609 (type_field(node
->type
)!=TYPE_CHOICE
) &&
610 !(node
->type
&CONST_DEFAULT
) && !(node
->type
&CONST_ASSIGN
) &&
612 return ASN1_VALUE_NOT_FOUND
;
614 switch(type_field(node
->type
)){
616 PUT_STR_VALUE( value
, value_size
, "NULL");
619 if((node
->type
&CONST_DEFAULT
) && (node
->value
==NULL
)){
621 while(type_field(p
->type
)!=TYPE_DEFAULT
) p
=p
->right
;
622 if(p
->type
&CONST_TRUE
) {
623 PUT_STR_VALUE( value
, value_size
, "TRUE");
625 PUT_STR_VALUE(value
, value_size
, "FALSE");
628 else if(node
->value
[0]=='T') {
629 PUT_STR_VALUE(value
, value_size
, "TRUE");
632 PUT_STR_VALUE(value
, value_size
, "FALSE");
635 case TYPE_INTEGER
: case TYPE_ENUMERATED
:
636 if((node
->type
&CONST_DEFAULT
) && (node
->value
==NULL
)){
638 while(type_field(p
->type
)!=TYPE_DEFAULT
) p
=p
->right
;
639 if((isdigit(p
->value
[0])) || (p
->value
[0]=='-') || (p
->value
[0]=='+')){
640 if (_asn1_convert_integer(p
->value
,value
,value_size
, len
) !=
642 return ASN1_MEM_ERROR
;
644 else{ /* is an identifier like v1 */
647 if(type_field(p2
->type
)==TYPE_CONSTANT
){
648 if((p2
->name
) && (!strcmp(p2
->name
,p
->value
))){
649 if (_asn1_convert_integer(p2
->value
,value
,value_size
, len
) !=
651 return ASN1_MEM_ERROR
;
661 if (_asn1_get_octet_der(node
->value
,&len2
,value
, value_size
, len
)!=ASN1_SUCCESS
) return ASN1_MEM_ERROR
;
665 if(node
->type
&CONST_ASSIGN
){
669 if(type_field(p
->type
)==TYPE_CONSTANT
){
670 ADD_STR_VALUE(value
,value_size
,p
->value
);
672 ADD_STR_VALUE(value
,value_size
,".");
677 *len
= strlen(value
) + 1;
679 else if((node
->type
&CONST_DEFAULT
) && (node
->value
==NULL
)){
681 while(type_field(p
->type
)!=TYPE_DEFAULT
) p
=p
->right
;
682 PUT_STR_VALUE(value
, value_size
, p
->value
);
685 PUT_STR_VALUE(value
, value_size
, node
->value
);
689 PUT_STR_VALUE( value
, value_size
, node
->value
);
691 case TYPE_OCTET_STRING
:
693 if (_asn1_get_octet_der(node
->value
,&len2
,value
, value_size
, len
)!=ASN1_SUCCESS
) return ASN1_MEM_ERROR
;
695 case TYPE_GENERALSTRING
:
697 if (_asn1_get_octet_der(node
->value
,&len2
,value
, value_size
, len
)!=ASN1_SUCCESS
) return ASN1_MEM_ERROR
;
699 case TYPE_BIT_STRING
:
701 if (_asn1_get_bit_der(node
->value
,&len2
,value
,value_size
,len
)!=ASN1_SUCCESS
) return ASN1_MEM_ERROR
;
704 PUT_STR_VALUE( value
, value_size
, node
->down
->name
);
708 len2
=_asn1_get_length_der(node
->value
,&len3
);
709 PUT_VALUE( value
, value_size
, node
->value
+len3
, len2
);
712 return ASN1_ELEMENT_NOT_FOUND
;
720 * asn1_read_tag - Returns the TAG of one element inside a structure
721 * @root: pointer to a structure
722 * @name: the name of the element inside a structure.
723 * @tagValue: variable that will contain the TAG value.
724 * @classValue: variable that will specify the TAG type.
728 * Returns the TAG and the CLASS of one element inside a structure.
729 * CLASS can have one of these constants: ASN1_CLASS_APPLICATION,
730 * ASN1_CLASS_UNIVERSAL, ASN1_CLASS_PRIVATE or ASN1_CLASS_CONTEXT_SPECIFIC.
734 * ASN1_SUCCESS\: set value OK
736 * ASN1_ELEMENT_NOT_FOUND\: NAME is not a valid element.
740 asn1_read_tag(node_asn
*root
,const char *name
,int *tagValue
, int *classValue
)
742 node_asn
*node
,*p
,*pTag
;
744 node
=_asn1_find_node(root
,name
);
745 if(node
==NULL
) return ASN1_ELEMENT_NOT_FOUND
;
749 /* pTag will points to the IMPLICIT TAG */
751 if(node
->type
&CONST_TAG
){
753 if(type_field(p
->type
)==TYPE_TAG
){
754 if((p
->type
&CONST_IMPLICIT
) && (pTag
==NULL
))
756 else if(p
->type
&CONST_EXPLICIT
)
764 *tagValue
=strtoul(pTag
->value
,NULL
,10);
766 if(pTag
->type
&CONST_APPLICATION
) *classValue
=ASN1_CLASS_APPLICATION
;
767 else if(pTag
->type
&CONST_UNIVERSAL
) *classValue
=ASN1_CLASS_UNIVERSAL
;
768 else if(pTag
->type
&CONST_PRIVATE
) *classValue
=ASN1_CLASS_PRIVATE
;
769 else *classValue
=ASN1_CLASS_CONTEXT_SPECIFIC
;
772 *classValue
=ASN1_CLASS_UNIVERSAL
;
774 switch(type_field(node
->type
)){
776 *tagValue
=ASN1_TAG_NULL
;break;
778 *tagValue
=ASN1_TAG_BOOLEAN
;break;
780 *tagValue
=ASN1_TAG_INTEGER
;break;
781 case TYPE_ENUMERATED
:
782 *tagValue
=ASN1_TAG_ENUMERATED
;break;
784 *tagValue
=ASN1_TAG_OBJECT_ID
;break;
786 if(node
->type
&CONST_UTC
){
787 *tagValue
=ASN1_TAG_UTCTime
;
789 else *tagValue
=ASN1_TAG_GENERALIZEDTime
;
791 case TYPE_OCTET_STRING
:
792 *tagValue
=ASN1_TAG_OCTET_STRING
;break;
793 case TYPE_GENERALSTRING
:
794 *tagValue
=ASN1_TAG_GENERALSTRING
;break;
795 case TYPE_BIT_STRING
:
796 *tagValue
=ASN1_TAG_BIT_STRING
;break;
797 case TYPE_SEQUENCE
: case TYPE_SEQUENCE_OF
:
798 *tagValue
=ASN1_TAG_SEQUENCE
;break;
799 case TYPE_SET
: case TYPE_SET_OF
:
800 *tagValue
=ASN1_TAG_SET
;break;