/* For this case, I will malloc the return strings */
int
get_signed_seq2string(PKCS7_SIGNER_INFO *si, char **str1, char **str2)
{
ASN1_TYPE *so;
if (signed_seq2string_nid == -1)
signed_seq2string_nid =
OBJ_create("1.9.9999","OID_example","Our example OID");
/* To retrieve */
so = PKCS7_get_signed_attribute(si, signed_seq2string_nid);
if (so && (so->type == V_ASN1_SEQUENCE)) {
ASN1_const_CTX c;
ASN1_STRING *s;
long length;
ASN1_OCTET_STRING *os1, *os2;
s = so->value.sequence;
c.p = ASN1_STRING_data(s);
c.max = c.p + ASN1_STRING_length(s);
if (!asn1_GetSequence(&c, &length))
goto err;
/* Length is the length of the seqence */
c.q = c.p;
if ((os1 = d2i_ASN1_OCTET_STRING(NULL, &c.p, c.slen)) == NULL)
goto err;
c.slen -= (c.p - c.q);
c.q = c.p;
if ((os2 = d2i_ASN1_OCTET_STRING(NULL, &c.p, c.slen)) == NULL)
goto err;
c.slen -= (c.p - c.q);
if (!asn1_const_Finish(&c))
goto err;
*str1 = malloc(os1->length + 1);
*str2 = malloc(os2->length + 1);
memcpy(*str1, os1->data, os1->length);
memcpy(*str2, os2->data, os2->length);
(*str1)[os1->length]='\0';
(*str2)[os2->length]='\0';
ASN1_OCTET_STRING_free(os1);
ASN1_OCTET_STRING_free(os2);
return (1);
}
err:
return (0);
}
/* There have been a few bug fixes for this function from
* Paul Keogh <*****@*****.**>, many thanks to him */
static int asn1_collate_primitive(ASN1_STRING *a, ASN1_const_CTX *c)
{
ASN1_STRING *os=NULL;
BUF_MEM b;
int num;
b.length=0;
b.max=0;
b.data=NULL;
if (a == NULL)
{
c->error=ERR_R_PASSED_NULL_PARAMETER;
goto err;
}
num=0;
for (;;)
{
if (c->inf & 1)
{
c->eos=ASN1_const_check_infinite_end(&c->p,
(long)(c->max-c->p));
if (c->eos) break;
}
else
{
if (c->slen <= 0) break;
}
c->q=c->p;
if (d2i_ASN1_bytes(&os,&c->p,c->max-c->p,c->tag,c->xclass)
== NULL)
{
c->error=ERR_R_ASN1_LIB;
goto err;
}
if (!BUF_MEM_grow_clean(&b,num+os->length))
{
c->error=ERR_R_BUF_LIB;
goto err;
}
memcpy(&(b.data[num]),os->data,os->length);
if (!(c->inf & 1))
c->slen-=(c->p-c->q);
num+=os->length;
}
if (!asn1_const_Finish(c)) goto err;
a->length=num;
if (a->data != NULL) OPENSSL_free(a->data);
a->data=(unsigned char *)b.data;
if (os != NULL) ASN1_STRING_free(os);
return(1);
err:
OPENSSL_PUT_ERROR(ASN1, asn1_collate_primitive, c->error);
if (os != NULL) ASN1_STRING_free(os);
if (b.data != NULL) OPENSSL_free(b.data);
return(0);
}
