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/*
Copyright © 2012-23 Miranda NG team
Copyright © 2009 Jim Porter
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "stdafx.h"
static CMStringA OAuthNormalizeUrl(const CMStringA &url)
{
CMStringA normalUrl = url;
int idx = normalUrl.Find('#');
if (idx != -1)
normalUrl.Truncate(idx);
idx = normalUrl.Find('?');
if (idx != -1)
normalUrl.Truncate(idx);
return normalUrl;
}
static int CompareCMString(const CMStringA *p1, const CMStringA *p2)
{
return mir_strcmp(p1->c_str(), p2->c_str());
}
static CMStringA OAuthNormalizeRequestParameters(const CMStringA &requestParameters, bool bShort)
{
OBJLIST<CMStringA> params(10);
Split(requestParameters, params, '&');
LIST<CMStringA> sorted(params.getCount(), CompareCMString);
for (auto &it : params)
sorted.insert(it);
CMStringA res;
for (auto &it : sorted) {
if (!res.IsEmpty())
res.AppendChar(bShort ? '&' : ',');
if (!bShort) {
it->Replace("=", "=\"");
it->AppendChar('\"');
}
res += *it;
}
return res;
}
CMStringA CTwitterProto::BuildSignedOAuthParameters(const CMStringA &request, const CMStringA &url, const char *httpMethod, const char *postData)
{
CMStringA timestamp(FORMAT, "%lld", _time64(0));
CMStringA nonce = OAuthCreateNonce();
// create oauth requestParameters
auto *req = new AsyncHttpRequest(!mir_strcmp(httpMethod, "GET") ? REQUEST_GET : REQUEST_POST, url);
req << CHAR_PARAM("oauth_timestamp", timestamp) << CHAR_PARAM("oauth_nonce", nonce) << CHAR_PARAM("oauth_version", "1.0")
<< CHAR_PARAM("oauth_signature_method", "HMAC-SHA1") << CHAR_PARAM("oauth_consumer_key", OAUTH_CONSUMER_KEY) << CHAR_PARAM("oauth_callback", "oob");
// add the request token if found
if (!m_szAccessToken.IsEmpty())
req << CHAR_PARAM("oauth_token", m_szAccessToken);
// add the authorization pin if found
if (!m_szPin.IsEmpty())
req << CHAR_PARAM("oauth_verifier", m_szPin);
// create a parameter list containing both oauth and original parameters
// this will be used to create the parameter signature
if (!request.IsEmpty()) {
req->m_szParam.AppendChar('&');
req->m_szParam.Append(request);
}
if (!mir_strlen(postData)) {
req->m_szParam.AppendChar('&');
req->m_szParam.Append(postData);
}
// prepare a signature base, a carefully formatted string containing
// all of the necessary information needed to generate a valid signature
CMStringA normalUrl = OAuthNormalizeUrl(url);
CMStringA normalizedParameters = OAuthNormalizeRequestParameters(req->m_szParam, true);
CMStringA signatureBase = CMStringA(httpMethod) + "&" + mir_urlEncode(normalUrl) + "&" + mir_urlEncode(normalizedParameters);
// obtain a signature and add it to header requestParameters
CMStringA signature = OAuthCreateSignature(signatureBase, OAUTH_CONSUMER_SECRET, m_szAccessTokenSecret);
req << CHAR_PARAM("oauth_signature", signature);
CMStringA ret = OAuthNormalizeRequestParameters(req->m_szParam, false);
delete req;
return ret;
}
CMStringA CTwitterProto::UrlGetQuery(const CMStringA &url)
{
CMStringA query = url;
int idx = query.Find('?');
if (idx == -1)
return "";
query.Delete(0, idx+1);
idx = query.Find('#');
if (idx != -1)
query.Truncate(idx);
return query;
}
// OAuthWebRequest used for all OAuth related queries
//
// consumerKey and consumerSecret - must be provided for every call, they identify the application
// oauthToken and oauthTokenSecret - need to be provided for every call, except for the first token request before authorizing
// pin - only used during authorization, when the user enters the PIN they received from the CTwitterProto website
CMStringA CTwitterProto::OAuthWebRequestSubmit(const CMStringA &url, const char *httpMethod, const char *postData)
{
CMStringA query = UrlGetQuery(url);
CMStringA oauthSignedParameters = BuildSignedOAuthParameters(query, url, httpMethod, postData);
oauthSignedParameters.Insert(0, "OAuth ");
return oauthSignedParameters;
}
static char ALPHANUMERIC[62+1] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
CMStringA CTwitterProto::OAuthCreateNonce()
{
CMStringA nonce;
for (int i = 0; i <= 16; ++i)
nonce.AppendChar(ALPHANUMERIC[rand() % 62]);
return nonce;
}
CMStringA CTwitterProto::OAuthCreateSignature(const CMStringA &signatureBase, const CMStringA &consumerSecret, const CMStringA &requestTokenSecret)
{
// URL encode key elements
CMStringA key = mir_urlEncode(consumerSecret) + "&" + mir_urlEncode(requestTokenSecret);
uint8_t digest[MIR_SHA1_HASH_SIZE];
unsigned int len;
HMAC(EVP_sha1(), key.c_str(), (int)key.GetLength(), (uint8_t*)signatureBase.c_str(), signatureBase.GetLength(), digest, &len);
return CMStringA(ptrA(mir_base64_encode(digest, sizeof(digest))));
}
/////////////////////////////////////////////////////////////////////////////////////////
void CTwitterProto::Oauth2RequestToken(NETLIBHTTPREQUEST *pResp, AsyncHttpRequest *)
{
if (pResp->resultCode != 200) {
OnLoggedFail();
return;
}
// StringPairs response = ParseQueryString(resp.data);
// szOauthToken = response[L"oauth_token"];
// szOauthTokenSecret = response[L"oauth_token_secret"];
if (m_szAccessToken.IsEmpty()) {
ShowPopup("OAuth token not received, check your internet connection?", 1);
debugLogA("**NegotiateConnection - OAuth tokens not received, stopping before we open the web browser..");
return;
}
// write those bitches to the db foe latta
setString(TWITTER_KEY_OAUTH_TOK, m_szAccessToken);
setString(TWITTER_KEY_OAUTH_TOK_SEC, m_szAccessTokenSecret);
}
void CTwitterProto::RequestOauthToken(const char *szPin)
{
auto *pReq = new AsyncHttpRequest(REQUEST_POST, "/oauth2/token", &CTwitterProto::Oauth2RequestToken);
pReq << CHAR_PARAM("grant_type", "authorization_code") << CHAR_PARAM("code_verifier", "zzzzzzz") << CHAR_PARAM("client_id", OAUTH_CONSUMER_KEY)
<< CHAR_PARAM("callback", "https://miranda-ng.org/oauth") << CHAR_PARAM("code", szPin);
Push(pReq);
}
/////////////////////////////////////////////////////////////////////////////////////////
void CTwitterProto::Oauth2RequestAuth(NETLIBHTTPREQUEST *pResp, AsyncHttpRequest *)
{
if (pResp->resultCode != 200) {
OnLoggedFail();
return;
}
}
void CTwitterProto::RequestOauthAuth()
{
Utils_GetRandom(code_verifier, sizeof(code_verifier));
uint8_t hash[32];
mir_sha256_hash(code_verifier, sizeof(code_verifier), hash);
code_challenge = ptrA(mir_base64_encode(hash, sizeof(hash)));
auto *pReq = new AsyncHttpRequest(REQUEST_PATCH, "https://twitter.com/i/oauth2/authorize", &CTwitterProto::Oauth2RequestAuth);
pReq->flags |= NLHRF_REDIRECT;
pReq << CHAR_PARAM("client_id", OAUTH_CONSUMER_KEY) << CHAR_PARAM("scope", "tweet.read tweet.write users.read offline.access")
<< CHAR_PARAM("response_type", "code") << CHAR_PARAM("callback", "https://oauth.miranda-ng.org") << CHAR_PARAM("state", "state")
<< CHAR_PARAM("code_challenge_method", "s256") << CHAR_PARAM("code_challenge", code_challenge);
Push(pReq);
}
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