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/*
* X.509 Certificate Store Searching
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#include <botan/x509find.h>
#include <botan/charset.h>
#include <algorithm>
namespace Botan {
namespace X509_Store_Search {
namespace {
/*
* Compare based on case-insensive substrings
*/
bool substring_match(const std::string& searching_for,
const std::string& found)
{
if(std::search(found.begin(), found.end(), searching_for.begin(),
searching_for.end(), Charset::caseless_cmp) != found.end())
return true;
return false;
}
/*
* Compare based on case-insensive match
*/
bool ignore_case(const std::string& searching_for, const std::string& found)
{
if(searching_for.size() != found.size())
return false;
return std::equal(found.begin(), found.end(),
searching_for.begin(), Charset::caseless_cmp);
}
}
/*
* Search based on the contents of a DN entry
*/
std::function<bool (const X509_Certificate&)>
by_dn(const std::string& dn_entry,
const std::string& to_find,
DN_Search_Type method)
{
if(method == SUBSTRING_MATCHING)
return by_dn(dn_entry, to_find, substring_match);
else if(method == IGNORE_CASE)
return by_dn(dn_entry, to_find, ignore_case);
throw Invalid_Argument("Unknown method argument to by_dn");
}
std::function<bool (const X509_Certificate&)>
by_dn(const std::string& dn_entry,
const std::string& to_find,
std::function<bool (std::string, std::string)> compare)
{
return [&](const X509_Certificate& cert)
{
std::vector<std::string> info = cert.subject_info(dn_entry);
for(u32bit i = 0; i != info.size(); ++i)
if(compare(info[i], to_find))
return true;
return false;
};
}
std::function<bool (const X509_Certificate&)>
by_issuer_and_serial(const X509_DN& issuer, const MemoryRegion<byte>& serial)
{
/* Serial number compare is much faster than X.509 DN, and unlikely
to collide even across issuers, so do that first to fail fast
*/
return [&](const X509_Certificate& cert)
{
if(cert.serial_number() != serial)
return false;
return (cert.issuer_dn() == issuer);
};
}
std::function<bool (const X509_Certificate&)>
by_issuer_and_serial(const X509_DN& issuer, const BigInt& serial)
{
return by_issuer_and_serial(issuer, BigInt::encode(serial));
}
std::function<bool (const X509_Certificate&)>
by_skid(const MemoryRegion<byte>& subject_key_id)
{
return [&](const X509_Certificate& cert)
{
return (cert.subject_key_id() == subject_key_id);
};
}
}
}
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