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/*
* X509_DN
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#include <botan/x509_dn.h>
#include <botan/der_enc.h>
#include <botan/ber_dec.h>
#include <botan/parsing.h>
#include <botan/internal/stl_util.h>
#include <botan/oids.h>
namespace Botan {
/*
* Create an empty X509_DN
*/
X509_DN::X509_DN()
{
}
/*
* Create an X509_DN
*/
X509_DN::X509_DN(const std::multimap<OID, std::string>& args)
{
std::multimap<OID, std::string>::const_iterator j;
for(j = args.begin(); j != args.end(); ++j)
add_attribute(j->first, j->second);
}
/*
* Create an X509_DN
*/
X509_DN::X509_DN(const std::multimap<std::string, std::string>& args)
{
std::multimap<std::string, std::string>::const_iterator j;
for(j = args.begin(); j != args.end(); ++j)
add_attribute(OIDS::lookup(j->first), j->second);
}
/*
* Add an attribute to a X509_DN
*/
void X509_DN::add_attribute(const std::string& type,
const std::string& str)
{
OID oid = OIDS::lookup(type);
add_attribute(oid, str);
}
/*
* Add an attribute to a X509_DN
*/
void X509_DN::add_attribute(const OID& oid, const std::string& str)
{
if(str == "")
return;
typedef std::multimap<OID, ASN1_String>::iterator rdn_iter;
std::pair<rdn_iter, rdn_iter> range = dn_info.equal_range(oid);
for(rdn_iter j = range.first; j != range.second; ++j)
if(j->second.value() == str)
return;
multimap_insert(dn_info, oid, ASN1_String(str));
dn_bits.clear();
}
/*
* Get the attributes of this X509_DN
*/
std::multimap<OID, std::string> X509_DN::get_attributes() const
{
typedef std::multimap<OID, ASN1_String>::const_iterator rdn_iter;
std::multimap<OID, std::string> retval;
for(rdn_iter j = dn_info.begin(); j != dn_info.end(); ++j)
multimap_insert(retval, j->first, j->second.value());
return retval;
}
/*
* Get the contents of this X.500 Name
*/
std::multimap<std::string, std::string> X509_DN::contents() const
{
typedef std::multimap<OID, ASN1_String>::const_iterator rdn_iter;
std::multimap<std::string, std::string> retval;
for(rdn_iter j = dn_info.begin(); j != dn_info.end(); ++j)
multimap_insert(retval, OIDS::lookup(j->first), j->second.value());
return retval;
}
/*
* Get a single attribute type
*/
std::vector<std::string> X509_DN::get_attribute(const std::string& attr) const
{
typedef std::multimap<OID, ASN1_String>::const_iterator rdn_iter;
const OID oid = OIDS::lookup(deref_info_field(attr));
std::pair<rdn_iter, rdn_iter> range = dn_info.equal_range(oid);
std::vector<std::string> values;
for(rdn_iter j = range.first; j != range.second; ++j)
values.push_back(j->second.value());
return values;
}
/*
* Return the BER encoded data, if any
*/
MemoryVector<byte> X509_DN::get_bits() const
{
return dn_bits;
}
/*
* Deref aliases in a subject/issuer info request
*/
std::string X509_DN::deref_info_field(const std::string& info)
{
if(info == "Name" || info == "CommonName") return "X520.CommonName";
if(info == "SerialNumber") return "X520.SerialNumber";
if(info == "Country") return "X520.Country";
if(info == "Organization") return "X520.Organization";
if(info == "Organizational Unit" || info == "OrgUnit")
return "X520.OrganizationalUnit";
if(info == "Locality") return "X520.Locality";
if(info == "State" || info == "Province") return "X520.State";
if(info == "Email") return "RFC822";
return info;
}
/*
* Compare two X509_DNs for equality
*/
bool operator==(const X509_DN& dn1, const X509_DN& dn2)
{
typedef std::multimap<OID, std::string>::const_iterator rdn_iter;
std::multimap<OID, std::string> attr1 = dn1.get_attributes();
std::multimap<OID, std::string> attr2 = dn2.get_attributes();
if(attr1.size() != attr2.size()) return false;
rdn_iter p1 = attr1.begin();
rdn_iter p2 = attr2.begin();
while(true)
{
if(p1 == attr1.end() && p2 == attr2.end())
break;
if(p1 == attr1.end()) return false;
if(p2 == attr2.end()) return false;
if(p1->first != p2->first) return false;
if(!x500_name_cmp(p1->second, p2->second))
return false;
++p1;
++p2;
}
return true;
}
/*
* Compare two X509_DNs for inequality
*/
bool operator!=(const X509_DN& dn1, const X509_DN& dn2)
{
return !(dn1 == dn2);
}
/*
* Compare two X509_DNs
*/
bool operator<(const X509_DN& dn1, const X509_DN& dn2)
{
typedef std::multimap<OID, std::string>::const_iterator rdn_iter;
std::multimap<OID, std::string> attr1 = dn1.get_attributes();
std::multimap<OID, std::string> attr2 = dn2.get_attributes();
if(attr1.size() < attr2.size()) return true;
if(attr1.size() > attr2.size()) return false;
for(rdn_iter p1 = attr1.begin(); p1 != attr1.end(); ++p1)
{
std::multimap<OID, std::string>::const_iterator p2;
p2 = attr2.find(p1->first);
if(p2 == attr2.end()) return false;
if(p1->second > p2->second) return false;
if(p1->second < p2->second) return true;
}
return false;
}
namespace {
/*
* DER encode a RelativeDistinguishedName
*/
void do_ava(DER_Encoder& encoder,
const std::multimap<OID, std::string>& dn_info,
ASN1_Tag string_type, const std::string& oid_str,
bool must_exist = false)
{
typedef std::multimap<OID, std::string>::const_iterator rdn_iter;
const OID oid = OIDS::lookup(oid_str);
const bool exists = (dn_info.find(oid) != dn_info.end());
if(!exists && must_exist)
throw Encoding_Error("X509_DN: No entry for " + oid_str);
if(!exists) return;
std::pair<rdn_iter, rdn_iter> range = dn_info.equal_range(oid);
for(rdn_iter j = range.first; j != range.second; ++j)
{
encoder.start_cons(SET)
.start_cons(SEQUENCE)
.encode(oid)
.encode(ASN1_String(j->second, string_type))
.end_cons()
.end_cons();
}
}
}
/*
* DER encode a DistinguishedName
*/
void X509_DN::encode_into(DER_Encoder& der) const
{
std::multimap<OID, std::string> dn_info = get_attributes();
der.start_cons(SEQUENCE);
if(!dn_bits.empty())
der.raw_bytes(dn_bits);
else
{
do_ava(der, dn_info, PRINTABLE_STRING, "X520.Country");
do_ava(der, dn_info, DIRECTORY_STRING, "X520.State");
do_ava(der, dn_info, DIRECTORY_STRING, "X520.Locality");
do_ava(der, dn_info, DIRECTORY_STRING, "X520.Organization");
do_ava(der, dn_info, DIRECTORY_STRING, "X520.OrganizationalUnit");
do_ava(der, dn_info, DIRECTORY_STRING, "X520.CommonName");
do_ava(der, dn_info, PRINTABLE_STRING, "X520.SerialNumber");
}
der.end_cons();
}
/*
* Decode a BER encoded DistinguishedName
*/
void X509_DN::decode_from(BER_Decoder& source)
{
MemoryVector<byte> bits;
source.start_cons(SEQUENCE)
.raw_bytes(bits)
.end_cons();
BER_Decoder sequence(bits);
while(sequence.more_items())
{
BER_Decoder rdn = sequence.start_cons(SET);
while(rdn.more_items())
{
OID oid;
ASN1_String str;
rdn.start_cons(SEQUENCE)
.decode(oid)
.decode(str)
.verify_end()
.end_cons();
add_attribute(oid, str.value());
}
}
dn_info = bits;
}
}
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