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#ifndef __OPKELE_UTIL_H
#define __OPKELE_UTIL_H
#include <time.h>
#include <string>
#include <vector>
#include <opkele/types.h>
namespace opkele {
using std::string;
using std::vector;
/**
* @brief opkele utils namespace
*/
namespace util {
/**
* Convert internal time representation to w3c format
* @param t internal representation
* @return w3c time
* @throw failed_conversion in case of error
*/
string time_to_w3c(time_t t);
/**
* Convert W3C time representation to internal time_t
* @param w w3c representation
* @return converted time
* @throw failed_conversion in case of error
*/
time_t w3c_to_time(const string& w);
/**
* Encode string to the representation suitable for using in URL
* @param str string to encode
* @return encoded string
* @throw failed_conversion in case of failure
*/
string url_encode(const string& str);
/**
* Decode url-encoded string back to normal
* @param str url-encoded string
* @return decoded string
* @throw failed_conversion in case of failure
*/
string url_decode(const string& str);
/**
* Make string suitable for using as x(ht)ml attribute.
* @param str string to escape
* @return escaped string
*/
string attr_escape(const string& str);
/**
* Convert number to string
* @param l number
* @return string representation
* @throw failed_conversion in case of failure
*/
string long_to_string(long l);
/**
* Convert string to number
* @param s string, containing the number
* @return the number
* @throw failed_conversion in case of failure
*/
long string_to_long(const string& s);
/**
* Encode binary data using base64.
* @param data pointer to binary data
* @param length length of data
* @return encoded data
*/
string encode_base64(const void *data,size_t length);
/**
* Decode binary data from base64 representation.
* @param data base64-encoded data
* @param rv container for decoded binary
*/
void decode_base64(const string& data,vector<unsigned char>& rv);
/**
* Normalize http(s) URI according to RFC3986, section 6. URI is
* expected to have scheme: in front of it.
* @param uri URI
* @return normalized URI
* @throw not_implemented in case of non-httpi(s) URI
* @throw bad_input in case of malformed URI
*/
string rfc_3986_normalize_uri(const string& uri);
string normalize_identifier(const string& usi,bool strip_fragment);
/**
* Match URI against realm
* @param uri URI to match
* @param realm realm to match against
* @return true if URI matches realm
*/
bool uri_matches_realm(const string& uri,const string& realm);
/**
* Strip fragment part from URI
* @param uri input/output parameter containing the URI
* @return reference to uri
*/
string& strip_uri_fragment_part(string& uri);
/**
* Calculate signature and encode it using base64
* @param assoc association being used for signing
* @param om openid message
* @return base64 representation of the signature
*/
string base64_signature(const assoc_t& assoc,const basic_openid_message& om);
}
}
#endif /* __OPKELE_UTIL_H */
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