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/*************************************************
* X.509 CRL Source File *
* (C) 1999-2007 The Botan Project *
*************************************************/
#include <botan/x509_crl.h>
#include <botan/x509_ext.h>
#include <botan/ber_dec.h>
#include <botan/parsing.h>
#include <botan/bigint.h>
#include <botan/config.h>
#include <botan/oids.h>
namespace Botan {
/*************************************************
* Load a X.509 CRL *
*************************************************/
X509_CRL::X509_CRL(DataSource& in) : X509_Object(in, "X509 CRL/CRL")
{
do_decode();
}
/*************************************************
* Load a X.509 CRL *
*************************************************/
X509_CRL::X509_CRL(const std::string& in) : X509_Object(in, "CRL/X509 CRL")
{
do_decode();
}
/*************************************************
* Decode the TBSCertList data *
*************************************************/
void X509_CRL::force_decode()
{
BER_Decoder tbs_crl(tbs_bits);
u32bit version;
tbs_crl.decode_optional(version, INTEGER, UNIVERSAL);
if(version != 0 && version != 1)
throw X509_CRL_Error("Unknown X.509 CRL version " +
to_string(version+1));
AlgorithmIdentifier sig_algo_inner;
tbs_crl.decode(sig_algo_inner);
if(sig_algo != sig_algo_inner)
throw X509_CRL_Error("Algorithm identifier mismatch");
X509_DN dn_issuer;
X509_Time start, end;
tbs_crl.decode(dn_issuer);
tbs_crl.decode(start);
tbs_crl.decode(end);
info.add(dn_issuer.contents());
info.add("X509.CRL.start", start.readable_string());
info.add("X509.CRL.end", end.readable_string());
BER_Object next = tbs_crl.get_next_object();
if(next.type_tag == SEQUENCE && next.class_tag == CONSTRUCTED)
{
BER_Decoder cert_list(next.value);
while(cert_list.more_items())
{
CRL_Entry entry;
cert_list.decode(entry);
revoked.push_back(entry);
}
next = tbs_crl.get_next_object();
}
if(next.type_tag == 0 &&
next.class_tag == ASN1_Tag(CONSTRUCTED | CONTEXT_SPECIFIC))
{
BER_Decoder crl_options(next.value);
std::string action = global_config().option("x509/crl/unknown_critical");
if(action != "throw" && action != "ignore")
throw Invalid_Argument("Bad value of x509/crl/unknown_critical: "
+ action);
Extensions extensions(action == "throw");
crl_options.decode(extensions).verify_end();
extensions.contents_to(info, info);
next = tbs_crl.get_next_object();
}
if(next.type_tag != NO_OBJECT)
throw X509_CRL_Error("Unknown tag in CRL");
tbs_crl.verify_end();
}
/*************************************************
* Return the list of revoked certificates *
*************************************************/
std::vector<CRL_Entry> X509_CRL::get_revoked() const
{
return revoked;
}
/*************************************************
* Return the distinguished name of the issuer *
*************************************************/
X509_DN X509_CRL::issuer_dn() const
{
return create_dn(info);
}
/*************************************************
* Return the key identifier of the issuer *
*************************************************/
MemoryVector<byte> X509_CRL::authority_key_id() const
{
return info.get1_memvec("X509v3.AuthorityKeyIdentifier");
}
/*************************************************
* Return the CRL number of this CRL *
*************************************************/
u32bit X509_CRL::crl_number() const
{
return info.get1_u32bit("X509v3.CRLNumber");
}
/*************************************************
* Return the issue data of the CRL *
*************************************************/
X509_Time X509_CRL::this_update() const
{
return info.get1("X509.CRL.start");
}
/*************************************************
* Return the date when a new CRL will be issued *
*************************************************/
X509_Time X509_CRL::next_update() const
{
return info.get1("X509.CRL.end");
}
}
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