static ASN1_TYPE *
asn1_str2type(const char *str, int format, int utype)
{
ASN1_TYPE *atmp = NULL;
CONF_VALUE vtmp;
unsigned char *rdata;
long rdlen;
int no_unused = 1;
if (!(atmp = ASN1_TYPE_new())) {
ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
return NULL;
}
if (!str)
str = "";
switch (utype) {
case V_ASN1_NULL:
if (str && *str) {
ASN1err(ASN1_F_ASN1_STR2TYPE,
ASN1_R_ILLEGAL_NULL_VALUE);
goto bad_form;
}
break;
case V_ASN1_BOOLEAN:
if (format != ASN1_GEN_FORMAT_ASCII) {
ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_NOT_ASCII_FORMAT);
goto bad_form;
}
vtmp.name = NULL;
vtmp.section = NULL;
vtmp.value = (char *)str;
if (!X509V3_get_value_bool(&vtmp, &atmp->value.boolean)) {
ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_BOOLEAN);
goto bad_str;
}
break;
case V_ASN1_INTEGER:
case V_ASN1_ENUMERATED:
if (format != ASN1_GEN_FORMAT_ASCII) {
ASN1err(ASN1_F_ASN1_STR2TYPE,
ASN1_R_INTEGER_NOT_ASCII_FORMAT);
goto bad_form;
}
if (!(atmp->value.integer =
s2i_ASN1_INTEGER(NULL, (char *)str))) {
ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_INTEGER);
goto bad_str;
}
break;
case V_ASN1_OBJECT:
if (format != ASN1_GEN_FORMAT_ASCII) {
ASN1err(ASN1_F_ASN1_STR2TYPE,
ASN1_R_OBJECT_NOT_ASCII_FORMAT);
goto bad_form;
}
if (!(atmp->value.object = OBJ_txt2obj(str, 0))) {
ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_OBJECT);
goto bad_str;
}
break;
case V_ASN1_UTCTIME:
case V_ASN1_GENERALIZEDTIME:
if (format != ASN1_GEN_FORMAT_ASCII) {
ASN1err(ASN1_F_ASN1_STR2TYPE,
ASN1_R_TIME_NOT_ASCII_FORMAT);
goto bad_form;
}
if (!(atmp->value.asn1_string = ASN1_STRING_new())) {
ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
goto bad_str;
}
if (!ASN1_STRING_set(atmp->value.asn1_string, str, -1)) {
ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
goto bad_str;
}
atmp->value.asn1_string->type = utype;
if (!ASN1_TIME_check(atmp->value.asn1_string)) {
ASN1err(ASN1_F_ASN1_STR2TYPE,
ASN1_R_ILLEGAL_TIME_VALUE);
goto bad_str;
}
break;
case V_ASN1_BMPSTRING:
case V_ASN1_PRINTABLESTRING:
case V_ASN1_IA5STRING:
case V_ASN1_T61STRING:
case V_ASN1_UTF8STRING:
case V_ASN1_VISIBLESTRING:
case V_ASN1_UNIVERSALSTRING:
case V_ASN1_GENERALSTRING:
case V_ASN1_NUMERICSTRING:
if (format == ASN1_GEN_FORMAT_ASCII)
format = MBSTRING_ASC;
else if (format == ASN1_GEN_FORMAT_UTF8)
format = MBSTRING_UTF8;
else {
ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_FORMAT);
goto bad_form;
}
if (ASN1_mbstring_copy(&atmp->value.asn1_string,
(unsigned char *)str, -1, format,
ASN1_tag2bit(utype)) <= 0) {
ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
goto bad_str;
}
break;
case V_ASN1_BIT_STRING:
case V_ASN1_OCTET_STRING:
if (!(atmp->value.asn1_string = ASN1_STRING_new())) {
ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
goto bad_form;
}
if (format == ASN1_GEN_FORMAT_HEX) {
if (!(rdata = string_to_hex((char *)str, &rdlen))) {
ASN1err(ASN1_F_ASN1_STR2TYPE,
ASN1_R_ILLEGAL_HEX);
goto bad_str;
}
atmp->value.asn1_string->data = rdata;
atmp->value.asn1_string->length = rdlen;
atmp->value.asn1_string->type = utype;
} else if (format == ASN1_GEN_FORMAT_ASCII)
ASN1_STRING_set(atmp->value.asn1_string, str, -1);
else if ((format == ASN1_GEN_FORMAT_BITLIST) &&
(utype == V_ASN1_BIT_STRING)) {
if (!CONF_parse_list(str, ',', 1, bitstr_cb,
atmp->value.bit_string)) {
ASN1err(ASN1_F_ASN1_STR2TYPE,
ASN1_R_LIST_ERROR);
goto bad_str;
}
no_unused = 0;
} else {
ASN1err(ASN1_F_ASN1_STR2TYPE,
ASN1_R_ILLEGAL_BITSTRING_FORMAT);
goto bad_form;
}
if ((utype == V_ASN1_BIT_STRING) && no_unused) {
atmp->value.asn1_string->flags &=
~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
atmp->value.asn1_string->flags |=
ASN1_STRING_FLAG_BITS_LEFT;
}
break;
default:
ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_UNSUPPORTED_TYPE);
goto bad_str;
break;
}
atmp->type = utype;
return atmp;
bad_str:
ERR_asprintf_error_data("string=%s", str);
bad_form:
ASN1_TYPE_free(atmp);
return NULL;
}
int ASN1_item_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len,
const ASN1_ITEM *it,
int tag, int aclass, char opt, ASN1_TLC *ctx)
{
const ASN1_TEMPLATE *tt, *errtt = NULL;
const ASN1_COMPAT_FUNCS *cf;
const ASN1_EXTERN_FUNCS *ef;
const ASN1_AUX *aux = it->funcs;
ASN1_aux_cb *asn1_cb;
const unsigned char *p = NULL, *q;
unsigned char *wp=NULL; /* BIG FAT WARNING! BREAKS CONST WHERE USED */
unsigned char imphack = 0, oclass;
char seq_eoc, seq_nolen, cst, isopt;
long tmplen;
int i;
int otag;
int ret = 0;
ASN1_VALUE **pchptr, *ptmpval;
if (!pval)
return 0;
if (aux && aux->asn1_cb)
asn1_cb = aux->asn1_cb;
else asn1_cb = 0;
switch(it->itype)
{
case ASN1_ITYPE_PRIMITIVE:
if (it->templates)
{
/* tagging or OPTIONAL is currently illegal on an item
* template because the flags can't get passed down.
* In practice this isn't a problem: we include the
* relevant flags from the item template in the
* template itself.
*/
if ((tag != -1) || opt)
{
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
ASN1_R_ILLEGAL_OPTIONS_ON_ITEM_TEMPLATE);
goto err;
}
return asn1_template_ex_d2i(pval, in, len,
it->templates, opt, ctx);
}
return asn1_d2i_ex_primitive(pval, in, len, it,
tag, aclass, opt, ctx);
break;
case ASN1_ITYPE_MSTRING:
p = *in;
/* Just read in tag and class */
ret = asn1_check_tlen(NULL, &otag, &oclass, NULL, NULL,
&p, len, -1, 0, 1, ctx);
if (!ret)
{
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
ERR_R_NESTED_ASN1_ERROR);
goto err;
}
/* Must be UNIVERSAL class */
if (oclass != V_ASN1_UNIVERSAL)
{
/* If OPTIONAL, assume this is OK */
if (opt) return -1;
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
ASN1_R_MSTRING_NOT_UNIVERSAL);
goto err;
}
/* Check tag matches bit map */
if (!(ASN1_tag2bit(otag) & it->utype))
{
/* If OPTIONAL, assume this is OK */
if (opt)
return -1;
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
ASN1_R_MSTRING_WRONG_TAG
int ASN1_item_ex_d2i(ASN1_VALUE **pval, unsigned char **in, long len, const ASN1_ITEM *it,
int tag, int aclass, char opt, ASN1_TLC *ctx)
{
const ASN1_TEMPLATE *tt, *errtt = NULL;
const ASN1_COMPAT_FUNCS *cf;
const ASN1_EXTERN_FUNCS *ef;
const ASN1_AUX *aux = it->funcs;
ASN1_aux_cb *asn1_cb;
unsigned char *p, *q, imphack = 0, oclass;
char seq_eoc, seq_nolen, cst, isopt;
long tmplen;
int i;
int otag;
int ret = 0;
ASN1_VALUE *pchval, **pchptr, *ptmpval;
if(!pval) return 0;
if(aux && aux->asn1_cb) asn1_cb = aux->asn1_cb;
else asn1_cb = 0;
switch(it->itype) {
case ASN1_ITYPE_PRIMITIVE:
if(it->templates) {
/* tagging or OPTIONAL is currently illegal on an item template
* because the flags can't get passed down. In practice this isn't
* a problem: we include the relevant flags from the item template
* in the template itself.
*/
if ((tag != -1) || opt) {
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_ILLEGAL_OPTIONS_ON_ITEM_TEMPLATE);
goto err;
}
return asn1_template_ex_d2i(pval, in, len, it->templates, opt, ctx);
}
return asn1_d2i_ex_primitive(pval, in, len, it, tag, aclass, opt, ctx);
break;
case ASN1_ITYPE_MSTRING:
p = *in;
/* Just read in tag and class */
ret = asn1_check_tlen(NULL, &otag, &oclass, NULL, NULL, &p, len, -1, 0, 1, ctx);
if(!ret) {
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
goto err;
}
/* Must be UNIVERSAL class */
if(oclass != V_ASN1_UNIVERSAL) {
/* If OPTIONAL, assume this is OK */
if(opt) return -1;
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_MSTRING_NOT_UNIVERSAL);
goto err;
}
/* Check tag matches bit map */
if(!(ASN1_tag2bit(otag) & it->utype)) {
/* If OPTIONAL, assume this is OK */
if(opt) return -1;
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_MSTRING_WRONG_TAG);
goto err;
}
return asn1_d2i_ex_primitive(pval, in, len, it, otag, 0, 0, ctx);
case ASN1_ITYPE_EXTERN:
/* Use new style d2i */
ef = it->funcs;
return ef->asn1_ex_d2i(pval, in, len, it, tag, aclass, opt, ctx);
case ASN1_ITYPE_COMPAT:
/* we must resort to old style evil hackery */
cf = it->funcs;
/* If OPTIONAL see if it is there */
if(opt) {
int exptag;
p = *in;
if(tag == -1) exptag = it->utype;
else exptag = tag;
/* Don't care about anything other than presence of expected tag */
ret = asn1_check_tlen(NULL, NULL, NULL, NULL, NULL, &p, len, exptag, aclass, 1, ctx);
if(!ret) {
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
goto err;
}
if(ret == -1) return -1;
}
/* This is the old style evil hack IMPLICIT handling:
* since the underlying code is expecting a tag and
* class other than the one present we change the
* buffer temporarily then change it back afterwards.
* This doesn't and never did work for tags > 30.
*
* Yes this is *horrible* but it is only needed for
* old style d2i which will hopefully not be around
* for much longer.
* FIXME: should copy the buffer then modify it so
* the input buffer can be const: we should *always*
* copy because the old style d2i might modify the
* buffer.
*/
if(tag != -1) {
p = *in;
imphack = *p;
*p = (unsigned char)((*p & V_ASN1_CONSTRUCTED) | it->utype);
}
ptmpval = cf->asn1_d2i(pval, in, len);
if(tag != -1) *p = imphack;
if(ptmpval) return 1;
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
goto err;
case ASN1_ITYPE_CHOICE:
if(asn1_cb && !asn1_cb(ASN1_OP_D2I_PRE, pval, it))
goto auxerr;
/* Allocate structure */
if(!*pval) {
if(!ASN1_item_ex_new(pval, it)) {
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
goto err;
}
}
/* CHOICE type, try each possibility in turn */
pchval = NULL;
p = *in;
for(i = 0, tt=it->templates; i < it->tcount; i++, tt++) {
pchptr = asn1_get_field_ptr(pval, tt);
/* We mark field as OPTIONAL so its absence
* can be recognised.
*/
ret = asn1_template_ex_d2i(pchptr, &p, len, tt, 1, ctx);
/* If field not present, try the next one */
if(ret == -1) continue;
/* If positive return, read OK, break loop */
if(ret > 0) break;
/* Otherwise must be an ASN1 parsing error */
errtt = tt;
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
goto err;
}
/* Did we fall off the end without reading anything? */
if(i == it->tcount) {
/* If OPTIONAL, this is OK */
if(opt) {
/* Free and zero it */
ASN1_item_ex_free(pval, it);
return -1;
}
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_NO_MATCHING_CHOICE_TYPE);
goto err;
}
asn1_set_choice_selector(pval, i, it);
*in = p;
if(asn1_cb && !asn1_cb(ASN1_OP_D2I_POST, pval, it))
goto auxerr;
return 1;
case ASN1_ITYPE_SEQUENCE:
p = *in;
tmplen = len;
/* If no IMPLICIT tagging set to SEQUENCE, UNIVERSAL */
if(tag == -1) {
tag = V_ASN1_SEQUENCE;
aclass = V_ASN1_UNIVERSAL;
}
/* Get SEQUENCE length and update len, p */
ret = asn1_check_tlen(&len, NULL, NULL, &seq_eoc, &cst, &p, len, tag, aclass, opt, ctx);
if(!ret) {
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
goto err;
} else if(ret == -1) return -1;
if(aux && (aux->flags & ASN1_AFLG_BROKEN)) {
len = tmplen - (p - *in);
seq_nolen = 1;
} else seq_nolen = seq_eoc; /* If indefinite we don't do a length check */
if(!cst) {
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_SEQUENCE_NOT_CONSTRUCTED);
goto err;
}
if(!*pval) {
if(!ASN1_item_ex_new(pval, it)) {
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
goto err;
}
}
if(asn1_cb && !asn1_cb(ASN1_OP_D2I_PRE, pval, it))
goto auxerr;
/* Get each field entry */
for(i = 0, tt = it->templates; i < it->tcount; i++, tt++) {
const ASN1_TEMPLATE *seqtt;
ASN1_VALUE **pseqval;
seqtt = asn1_do_adb(pval, tt, 1);
if(!seqtt) goto err;
pseqval = asn1_get_field_ptr(pval, seqtt);
/* Have we ran out of data? */
if(!len) break;
q = p;
if(asn1_check_eoc(&p, len)) {
if(!seq_eoc) {
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_UNEXPECTED_EOC);
goto err;
}
len -= p - q;
seq_eoc = 0;
q = p;
break;
}
/* This determines the OPTIONAL flag value. The field cannot
* be omitted if it is the last of a SEQUENCE and there is
* still data to be read. This isn't strictly necessary but
* it increases efficiency in some cases.
*/
if(i == (it->tcount - 1)) isopt = 0;
else isopt = (char)(seqtt->flags & ASN1_TFLG_OPTIONAL);
/* attempt to read in field, allowing each to be OPTIONAL */
ret = asn1_template_ex_d2i(pseqval, &p, len, seqtt, isopt, ctx);
if(!ret) {
errtt = seqtt;
goto err;
} else if(ret == -1) {
/* OPTIONAL component absent. Free and zero the field
*/
ASN1_template_free(pseqval, seqtt);
continue;
}
/* Update length */
len -= p - q;
}
/* Check for EOC if expecting one */
if(seq_eoc && !asn1_check_eoc(&p, len)) {
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_MISSING_EOC);
goto err;
}
/* Check all data read */
if(!seq_nolen && len) {
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_SEQUENCE_LENGTH_MISMATCH);
goto err;
}
/* If we get here we've got no more data in the SEQUENCE,
* however we may not have read all fields so check all
* remaining are OPTIONAL and clear any that are.
*/
for(; i < it->tcount; tt++, i++) {
const ASN1_TEMPLATE *seqtt;
seqtt = asn1_do_adb(pval, tt, 1);
if(!seqtt) goto err;
if(seqtt->flags & ASN1_TFLG_OPTIONAL) {
ASN1_VALUE **pseqval;
pseqval = asn1_get_field_ptr(pval, seqtt);
ASN1_template_free(pseqval, seqtt);
} else {
errtt = seqtt;
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_FIELD_MISSING);
goto err;
}
}
/* Save encoding */
if(!asn1_enc_save(pval, *in, p - *in, it)) goto auxerr;
*in = p;
if(asn1_cb && !asn1_cb(ASN1_OP_D2I_POST, pval, it))
goto auxerr;
return 1;
default:
return 0;
}
auxerr:
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_AUX_ERROR);
err:
ASN1_item_ex_free(pval, it);
if(errtt) ERR_add_error_data(4, "Field=", errtt->field_name, ", Type=", it->sname);
else ERR_add_error_data(2, "Type=", it->sname);
return 0;
}
/* type is a 'bitmap' of acceptable string types.
*/
ASN1_STRING *d2i_ASN1_type_bytes(ASN1_STRING **a, const unsigned char **pp,
long length, int type)
{
ASN1_STRING *ret=NULL;
const unsigned char *p;
unsigned char *s;
long len;
int inf,tag,xclass;
int i=0;
p= *pp;
inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
if (inf & 0x80) goto err;
if (tag >= 32)
{
i=ASN1_R_TAG_VALUE_TOO_HIGH;
goto err;
}
if (!(ASN1_tag2bit(tag) & type))
{
i=ASN1_R_WRONG_TYPE;
goto err;
}
/* If a bit-string, exit early */
if (tag == V_ASN1_BIT_STRING)
return(d2i_ASN1_BIT_STRING(a,pp,length));
if ((a == NULL) || ((*a) == NULL))
{
if ((ret=ASN1_STRING_new()) == NULL) return(NULL);
}
else
ret=(*a);
if (len != 0)
{
s=(unsigned char *)OPENSSL_malloc((int)len+1);
if (s == NULL)
{
i=ERR_R_MALLOC_FAILURE;
goto err;
}
memcpy(s,p,(int)len);
s[len]='\0';
p+=len;
}
else
s=NULL;
if (ret->data != NULL) OPENSSL_free(ret->data);
ret->length=(int)len;
ret->data=s;
ret->type=tag;
if (a != NULL) (*a)=ret;
*pp=p;
return(ret);
err:
OPENSSL_PUT_ERROR(ASN1, d2i_ASN1_type_bytes, i);
if ((ret != NULL) && ((a == NULL) || (*a != ret)))
ASN1_STRING_free(ret);
return(NULL);
}
