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/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
#include "base/base64.hpp"
#include <openssl/bio.h>
#include <openssl/evp.h>
#include <openssl/buffer.h>
#include <sstream>
using namespace icinga;
String Base64::Encode(const String& input)
{
BIO *biomem = BIO_new(BIO_s_mem());
BIO *bio64 = BIO_new(BIO_f_base64());
BIO_push(bio64, biomem);
BIO_set_flags(bio64, BIO_FLAGS_BASE64_NO_NL);
BIO_write(bio64, input.CStr(), input.GetLength());
(void) BIO_flush(bio64);
char *outbuf;
long len = BIO_get_mem_data(biomem, &outbuf);
String ret = String(outbuf, outbuf + len);
BIO_free_all(bio64);
return ret;
}
String Base64::Decode(const String& input)
{
BIO *biomem = BIO_new_mem_buf(
const_cast<char*>(input.CStr()), input.GetLength());
BIO *bio64 = BIO_new(BIO_f_base64());
BIO_push(bio64, biomem);
BIO_set_flags(bio64, BIO_FLAGS_BASE64_NO_NL);
auto *outbuf = new char[input.GetLength()];
size_t len = 0;
int rc;
while ((rc = BIO_read(bio64, outbuf + len, input.GetLength() - len)) > 0)
len += rc;
String ret = String(outbuf, outbuf + len);
BIO_free_all(bio64);
delete [] outbuf;
if (ret.IsEmpty() && !input.IsEmpty())
throw std::invalid_argument("Not a valid base64 string");
return ret;
}
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