330 lines
8.0 KiB
C
330 lines
8.0 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <openssl/pkcs7.h>
|
|
#include <openssl/asn1_mac.h>
|
|
#include <openssl/x509.h>
|
|
|
|
int add_signed_time(PKCS7_SIGNER_INFO *si)
|
|
{
|
|
ASN1_UTCTIME *sign_time;
|
|
|
|
/* The last parameter is the amount to add/subtract from the current
|
|
* time (in seconds) */
|
|
sign_time=X509_gmtime_adj(NULL,0);
|
|
PKCS7_add_signed_attribute(si,NID_pkcs9_signingTime,
|
|
V_ASN1_UTCTIME,(char *)sign_time);
|
|
return(1);
|
|
}
|
|
|
|
ASN1_UTCTIME *get_signed_time(PKCS7_SIGNER_INFO *si)
|
|
{
|
|
ASN1_TYPE *so;
|
|
|
|
so=PKCS7_get_signed_attribute(si,NID_pkcs9_signingTime);
|
|
if (so->type == V_ASN1_UTCTIME)
|
|
return so->value.utctime;
|
|
return NULL;
|
|
}
|
|
|
|
static int signed_string_nid= -1;
|
|
|
|
void add_signed_string(PKCS7_SIGNER_INFO *si, char *str)
|
|
{
|
|
ASN1_OCTET_STRING *os;
|
|
|
|
/* To a an object of OID 1.2.3.4.5, which is an octet string */
|
|
if (signed_string_nid == -1)
|
|
signed_string_nid=
|
|
OBJ_create("1.2.3.4.5","OID_example","Our example OID");
|
|
os=ASN1_OCTET_STRING_new();
|
|
ASN1_OCTET_STRING_set(os,(unsigned char*)str,strlen(str));
|
|
/* When we add, we do not free */
|
|
PKCS7_add_signed_attribute(si,signed_string_nid,
|
|
V_ASN1_OCTET_STRING,(char *)os);
|
|
}
|
|
|
|
int get_signed_string(PKCS7_SIGNER_INFO *si, char *buf, int len)
|
|
{
|
|
ASN1_TYPE *so;
|
|
ASN1_OCTET_STRING *os;
|
|
int i;
|
|
|
|
if (signed_string_nid == -1)
|
|
signed_string_nid=
|
|
OBJ_create("1.2.3.4.5","OID_example","Our example OID");
|
|
/* To retrieve */
|
|
so=PKCS7_get_signed_attribute(si,signed_string_nid);
|
|
if (so != NULL)
|
|
{
|
|
if (so->type == V_ASN1_OCTET_STRING)
|
|
{
|
|
os=so->value.octet_string;
|
|
i=os->length;
|
|
if ((i+1) > len)
|
|
i=len-1;
|
|
memcpy(buf,os->data,i);
|
|
return(i);
|
|
}
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
static int signed_seq2string_nid= -1;
|
|
/* ########################################### */
|
|
int add_signed_seq2string(PKCS7_SIGNER_INFO *si, char *str1, char *str2)
|
|
{
|
|
/* To add an object of OID 1.9.999, which is a sequence containing
|
|
* 2 octet strings */
|
|
unsigned char *p;
|
|
ASN1_OCTET_STRING *os1,*os2;
|
|
ASN1_STRING *seq;
|
|
unsigned char *data;
|
|
int i,total;
|
|
|
|
if (signed_seq2string_nid == -1)
|
|
signed_seq2string_nid=
|
|
OBJ_create("1.9.9999","OID_example","Our example OID");
|
|
|
|
os1=ASN1_OCTET_STRING_new();
|
|
os2=ASN1_OCTET_STRING_new();
|
|
ASN1_OCTET_STRING_set(os1,(unsigned char*)str1,strlen(str1));
|
|
ASN1_OCTET_STRING_set(os2,(unsigned char*)str1,strlen(str1));
|
|
i =i2d_ASN1_OCTET_STRING(os1,NULL);
|
|
i+=i2d_ASN1_OCTET_STRING(os2,NULL);
|
|
total=ASN1_object_size(1,i,V_ASN1_SEQUENCE);
|
|
|
|
data=malloc(total);
|
|
p=data;
|
|
ASN1_put_object(&p,1,i,V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL);
|
|
i2d_ASN1_OCTET_STRING(os1,&p);
|
|
i2d_ASN1_OCTET_STRING(os2,&p);
|
|
|
|
seq=ASN1_STRING_new();
|
|
ASN1_STRING_set(seq,data,total);
|
|
free(data);
|
|
ASN1_OCTET_STRING_free(os1);
|
|
ASN1_OCTET_STRING_free(os2);
|
|
|
|
PKCS7_add_signed_attribute(si,signed_seq2string_nid,
|
|
V_ASN1_SEQUENCE,(char *)seq);
|
|
return(1);
|
|
}
|
|
|
|
/* 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);
|
|
}
|
|
|
|
|
|
/* #######################################
|
|
* THE OTHER WAY TO DO THINGS
|
|
* #######################################
|
|
*/
|
|
X509_ATTRIBUTE *create_time(void)
|
|
{
|
|
ASN1_UTCTIME *sign_time;
|
|
X509_ATTRIBUTE *ret;
|
|
|
|
/* The last parameter is the amount to add/subtract from the current
|
|
* time (in seconds) */
|
|
sign_time=X509_gmtime_adj(NULL,0);
|
|
ret=X509_ATTRIBUTE_create(NID_pkcs9_signingTime,
|
|
V_ASN1_UTCTIME,(char *)sign_time);
|
|
return(ret);
|
|
}
|
|
|
|
ASN1_UTCTIME *sk_get_time(STACK_OF(X509_ATTRIBUTE) *sk)
|
|
{
|
|
ASN1_TYPE *so;
|
|
PKCS7_SIGNER_INFO si;
|
|
|
|
si.auth_attr=sk;
|
|
so=PKCS7_get_signed_attribute(&si,NID_pkcs9_signingTime);
|
|
if (so->type == V_ASN1_UTCTIME)
|
|
return so->value.utctime;
|
|
return NULL;
|
|
}
|
|
|
|
X509_ATTRIBUTE *create_string(char *str)
|
|
{
|
|
ASN1_OCTET_STRING *os;
|
|
X509_ATTRIBUTE *ret;
|
|
|
|
/* To a an object of OID 1.2.3.4.5, which is an octet string */
|
|
if (signed_string_nid == -1)
|
|
signed_string_nid=
|
|
OBJ_create("1.2.3.4.5","OID_example","Our example OID");
|
|
os=ASN1_OCTET_STRING_new();
|
|
ASN1_OCTET_STRING_set(os,(unsigned char*)str,strlen(str));
|
|
/* When we add, we do not free */
|
|
ret=X509_ATTRIBUTE_create(signed_string_nid,
|
|
V_ASN1_OCTET_STRING,(char *)os);
|
|
return(ret);
|
|
}
|
|
|
|
int sk_get_string(STACK_OF(X509_ATTRIBUTE) *sk, char *buf, int len)
|
|
{
|
|
ASN1_TYPE *so;
|
|
ASN1_OCTET_STRING *os;
|
|
int i;
|
|
PKCS7_SIGNER_INFO si;
|
|
|
|
si.auth_attr=sk;
|
|
|
|
if (signed_string_nid == -1)
|
|
signed_string_nid=
|
|
OBJ_create("1.2.3.4.5","OID_example","Our example OID");
|
|
/* To retrieve */
|
|
so=PKCS7_get_signed_attribute(&si,signed_string_nid);
|
|
if (so != NULL)
|
|
{
|
|
if (so->type == V_ASN1_OCTET_STRING)
|
|
{
|
|
os=so->value.octet_string;
|
|
i=os->length;
|
|
if ((i+1) > len)
|
|
i=len-1;
|
|
memcpy(buf,os->data,i);
|
|
return(i);
|
|
}
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
X509_ATTRIBUTE *add_seq2string(PKCS7_SIGNER_INFO *si, char *str1, char *str2)
|
|
{
|
|
/* To add an object of OID 1.9.999, which is a sequence containing
|
|
* 2 octet strings */
|
|
unsigned char *p;
|
|
ASN1_OCTET_STRING *os1,*os2;
|
|
ASN1_STRING *seq;
|
|
X509_ATTRIBUTE *ret;
|
|
unsigned char *data;
|
|
int i,total;
|
|
|
|
if (signed_seq2string_nid == -1)
|
|
signed_seq2string_nid=
|
|
OBJ_create("1.9.9999","OID_example","Our example OID");
|
|
|
|
os1=ASN1_OCTET_STRING_new();
|
|
os2=ASN1_OCTET_STRING_new();
|
|
ASN1_OCTET_STRING_set(os1,(unsigned char*)str1,strlen(str1));
|
|
ASN1_OCTET_STRING_set(os2,(unsigned char*)str1,strlen(str1));
|
|
i =i2d_ASN1_OCTET_STRING(os1,NULL);
|
|
i+=i2d_ASN1_OCTET_STRING(os2,NULL);
|
|
total=ASN1_object_size(1,i,V_ASN1_SEQUENCE);
|
|
|
|
data=malloc(total);
|
|
p=data;
|
|
ASN1_put_object(&p,1,i,V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL);
|
|
i2d_ASN1_OCTET_STRING(os1,&p);
|
|
i2d_ASN1_OCTET_STRING(os2,&p);
|
|
|
|
seq=ASN1_STRING_new();
|
|
ASN1_STRING_set(seq,data,total);
|
|
free(data);
|
|
ASN1_OCTET_STRING_free(os1);
|
|
ASN1_OCTET_STRING_free(os2);
|
|
|
|
ret=X509_ATTRIBUTE_create(signed_seq2string_nid,
|
|
V_ASN1_SEQUENCE,(char *)seq);
|
|
return(ret);
|
|
}
|
|
|
|
/* For this case, I will malloc the return strings */
|
|
int sk_get_seq2string(STACK_OF(X509_ATTRIBUTE) *sk, char **str1, char **str2)
|
|
{
|
|
ASN1_TYPE *so;
|
|
PKCS7_SIGNER_INFO si;
|
|
|
|
if (signed_seq2string_nid == -1)
|
|
signed_seq2string_nid=
|
|
OBJ_create("1.9.9999","OID_example","Our example OID");
|
|
|
|
si.auth_attr=sk;
|
|
/* To retrieve */
|
|
so=PKCS7_get_signed_attribute(&si,signed_seq2string_nid);
|
|
if (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);
|
|
}
|
|
|
|
|