// Helper for parameters in key-value pair lists that should only appear
// once. Either replaces an existing entry or adds a new entry.
static void ReplaceOrInsertKeyValuePair(KeyValuePairs& kvp, const std::string& key, const std::string& value) {
assert(kvp.count(key) <= 1);
KeyValuePairs::iterator it = kvp.find(key);
if (it != kvp.end())
it->second = value;
else
kvp.insert(KeyValuePairs::value_type(key, value));
}
std::string Client::buildOAuthParameterString(
ParameterStringType string_type,
const Http::RequestType eType,
const std::string& rawUrl,
const std::string& rawData,
const bool includeOAuthVerifierPin)
{
KeyValuePairs rawKeyValuePairs;
std::string rawParams;
std::string oauthSignature;
std::string paramsSeperator;
std::string pureUrl( rawUrl );
std::string separator;
bool do_urlencode;
if (string_type == AuthorizationHeaderString) {
separator = ",";
do_urlencode = false;
}
else { /*if (string_type == QueryStringString)*/
separator = "&";
do_urlencode = true;
}
/* Clear header string initially */
rawKeyValuePairs.clear();
/* If URL itself contains ?key=value, then extract and put them in map */
size_t nPos = rawUrl.find_first_of( "?" );
if( std::string::npos != nPos )
{
/* Get only URL */
pureUrl = rawUrl.substr( 0, nPos );
/* Get only key=value data part */
std::string dataPart = rawUrl.substr( nPos + 1 );
rawKeyValuePairs = ParseKeyValuePairs(dataPart);
}
// We always request URL encoding on the first pass so that the
// signature generation works properly. This *relies* on
// buildOAuthTokenKeyValuePairs overwriting values when we do the second
// pass to get the values in the form we actually want. The signature and
// rawdata are the only things that change, but the signature is only used
// in the second pass and the rawdata is already encoded, regardless of
// request type.
/* Build key-value pairs needed for OAuth request token, without signature */
buildOAuthTokenKeyValuePairs( includeOAuthVerifierPin, rawData, std::string( "" ), rawKeyValuePairs, true, true );
/* Get url encoded base64 signature using request type, url and parameters */
getSignature( eType, pureUrl, rawKeyValuePairs, oauthSignature );
/* Now, again build key-value pairs with signature this time */
buildOAuthTokenKeyValuePairs( includeOAuthVerifierPin, std::string( "" ), oauthSignature, rawKeyValuePairs, do_urlencode, false );
/* Get OAuth header in string format. If we're getting the Authorization
* header, we need to filter out other parameters.
*/
if (string_type == AuthorizationHeaderString) {
KeyValuePairs oauthKeyValuePairs;
std::vector<std::string> oauth_keys;
oauth_keys.push_back(Defaults::CONSUMERKEY_KEY);
oauth_keys.push_back(Defaults::NONCE_KEY);
oauth_keys.push_back(Defaults::SIGNATURE_KEY);
oauth_keys.push_back(Defaults::SIGNATUREMETHOD_KEY);
oauth_keys.push_back(Defaults::TIMESTAMP_KEY);
oauth_keys.push_back(Defaults::TOKEN_KEY);
oauth_keys.push_back(Defaults::VERIFIER_KEY);
oauth_keys.push_back(Defaults::VERSION_KEY);
for(size_t i = 0; i < oauth_keys.size(); i++) {
assert(rawKeyValuePairs.count(oauth_keys[i]) <= 1);
KeyValuePairs::iterator oauth_key_it = rawKeyValuePairs.find(oauth_keys[i]);
if (oauth_key_it != rawKeyValuePairs.end())
ReplaceOrInsertKeyValuePair(oauthKeyValuePairs, oauth_keys[i], oauth_key_it->second);
}
getStringFromOAuthKeyValuePairs( oauthKeyValuePairs, rawParams, separator );
}
else if (string_type == QueryStringString) {
getStringFromOAuthKeyValuePairs( rawKeyValuePairs, rawParams, separator );
}
/* Build authorization header */
return rawParams;
}