Unicode C++
Unicode C++
Etsy OAuth1 Authorization
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Demonstrates 3-legged OAuth1 authorization for Etsy.Chilkat Unicode C++ Downloads
#include <CkHttpW.h>
#include <CkHttpRequestW.h>
#include <CkHttpResponseW.h>
#include <CkHashtableW.h>
#include <CkStringBuilderW.h>
#include <CkSocketW.h>
#include <CkTaskW.h>
#include <CkOAuth2W.h>
#include <CkJsonObjectW.h>
#include <CkFileAccessW.h>
void ChilkatSample(void)
{
bool success = false;
const wchar_t *consumerKey = L"keystring";
const wchar_t *consumerSecret = L"shared_secret";
// Specify one or more SPACE separated scopes as query params in the requestTokenUrl
// See https://www.etsy.com/developers/documentation/getting_started/oauth#section_permission_scopes
const wchar_t *requestTokenUrl = L"https://openapi.etsy.com/v2/oauth/request_token?scope=email_r%20listings_r%20listings_w%20listings_d";
const wchar_t *authorizeUrl = L"https://www.etsy.com/oauth/signin";
const wchar_t *accessTokenUrl = L"https://openapi.etsy.com/v2/oauth/access_token";
// The port number is picked at random. It's some unused port that won't likely conflict with anything else..
const wchar_t *callbackUrl = L"http://localhost:3017/";
int callbackLocalPort = 3017;
// The 1st step in 3-legged OAuth1.0a is to send a POST to the request token URL to obtain an OAuth Request Token
CkHttpW http;
http.put_OAuth1(true);
http.put_OAuthConsumerKey(consumerKey);
http.put_OAuthConsumerSecret(consumerSecret);
http.put_OAuthCallback(callbackUrl);
CkHttpRequestW req;
req.put_HttpVerb(L"POST");
req.put_ContentType(L"application/x-www-form-urlencoded");
CkHttpResponseW resp;
success = http.HttpReq(requestTokenUrl,req,resp);
if (success == false) {
wprintf(L"%s\n",http.lastErrorText());
return;
}
// If successful, the resp.BodyStr contains something like this:
// login_url=https%3A%2F%2Fwww.etsy.com%2Foauth%2Fsignin%3Foauth_consumer_key%3D9ad9l1omxzbwfr2niq0ce1ly%26oauth_token%3D7116b4d0c72c2736561853d9e50113%26service%3Dv2_prod&oauth_token=7116b4d0c72c2736561853d9e50113&oauth_token_secret=3b7612b5d3&oauth_callback_confirmed=true&oauth_consumer_key=9ad9l1omxzbwfr2niq0ce1ly&oauth_callback=http%3A%2F%2Flocalhost%3A3017%2F
wprintf(L"%s\n",resp.bodyStr());
// We'll need this for later..
CkHashtableW hashTab;
hashTab.AddQueryParams(resp.bodyStr());
const wchar_t *requestToken = hashTab.lookupStr(L"oauth_token");
const wchar_t *requestTokenSecret = hashTab.lookupStr(L"oauth_token_secret");
http.put_OAuthTokenSecret(requestTokenSecret);
wprintf(L"oauth_token = %s\n",requestToken);
wprintf(L"oauth_token_secret = %s\n",requestTokenSecret);
// ---------------------------------------------------------------------------
// The next step is to form a URL to send to the authorizeUrl
// This is an HTTP GET that we load into a popup browser.
CkStringBuilderW sbUrlForBrowser;
sbUrlForBrowser.Append(authorizeUrl);
sbUrlForBrowser.Append(L"?");
sbUrlForBrowser.Append(resp.bodyStr());
const wchar_t *url = sbUrlForBrowser.getAsString();
// When the url is loaded into a browser, the response from Etsy will redirect back to localhost:3017
// We'll need to start a socket that is listening on port 3017 for the callback from the browser.
CkSocketW listenSock;
int backLog = 5;
success = listenSock.BindAndListen(callbackLocalPort,backLog);
if (success == false) {
wprintf(L"%s\n",listenSock.lastErrorText());
return;
}
// Wait for the browser's connection in a background thread.
// (We'll send load the URL into the browser following this..)
// Wait a max of 60 seconds before giving up.
CkSocketW sock;
int maxWaitMs = 60000;
CkTaskW *task = listenSock.AcceptNextAsync(maxWaitMs,sock);
task->Run();
// Launch the system's default browser navigated to the URL.
CkOAuth2W oauth2;
success = oauth2.LaunchBrowser(url);
if (success == false) {
wprintf(L"%s\n",oauth2.lastErrorText());
return;
}
// Wait for the listenSock's task to complete.
success = task->Wait(maxWaitMs);
if (!success || (task->get_StatusInt() != 7) || (task->get_TaskSuccess() != true)) {
if (!success) {
// The task.LastErrorText applies to the Wait method call.
wprintf(L"%s\n",task->lastErrorText());
}
else {
// The ResultErrorText applies to the underlying task method call (i.e. the AcceptNextConnection)
wprintf(L"%s\n",task->status());
wprintf(L"%s\n",task->resultErrorText());
}
delete task;
return;
}
// If we get to this point, the connection from the browser arrived and was accepted.
// We no longer need the listen socket...
// Stop listening on port 3017.
listenSock.Close(10);
delete task;
// Read the start line of the request..
const wchar_t *startLine = sock.receiveUntilMatch(L"\r\n");
if (sock.get_LastMethodSuccess() == false) {
wprintf(L"%s\n",sock.lastErrorText());
return;
}
// Read the request header.
const wchar_t *requestHeader = sock.receiveUntilMatch(L"\r\n\r\n");
if (sock.get_LastMethodSuccess() == false) {
wprintf(L"%s\n",sock.lastErrorText());
return;
}
// The browser SHOULD be sending us a GET request, and therefore there is no body to the request.
// Once the request header is received, we have all of it.
// We can now send our HTTP response.
CkStringBuilderW sbResponseHtml;
sbResponseHtml.Append(L"<html><body><p>Chilkat thanks you!</b></body</html>");
CkStringBuilderW sbResponse;
sbResponse.Append(L"HTTP/1.1 200 OK\r\n");
sbResponse.Append(L"Content-Length: ");
sbResponse.AppendInt(sbResponseHtml.get_Length());
sbResponse.Append(L"\r\n");
sbResponse.Append(L"Content-Type: text/html\r\n");
sbResponse.Append(L"\r\n");
sbResponse.AppendSb(sbResponseHtml);
sock.SendString(sbResponse.getAsString());
sock.Close(50);
// The information we need is in the startLine.
// For example, the startLine will look like this:
// GET /?oauth_token=a3bc8bec84acc31418b68a532e9511&oauth_verifier=b5558d37 HTTP/1.1
CkStringBuilderW sbStartLine;
sbStartLine.Append(startLine);
int numReplacements = sbStartLine.Replace(L"GET /?",L"");
numReplacements = sbStartLine.Replace(L" HTTP/1.1",L"");
sbStartLine.Trim();
// oauth_token=a3bc8bec84acc31418b68a532e9511&oauth_verifier=b5558d37
wprintf(L"startline: %s\n",sbStartLine.getAsString());
hashTab.Clear();
hashTab.AddQueryParams(sbStartLine.getAsString());
requestToken = hashTab.lookupStr(L"oauth_token");
const wchar_t *authVerifier = hashTab.lookupStr(L"oauth_verifier");
// ------------------------------------------------------------------------------
// Finally , we must exchange the OAuth Request Token for an OAuth Access Token.
http.put_OAuthToken(requestToken);
http.put_OAuthVerifier(authVerifier);
req.put_HttpVerb(L"POST");
req.put_ContentType(L"application/x-www-form-urlencoded");
success = http.HttpReq(accessTokenUrl,req,resp);
if (success == false) {
wprintf(L"%s\n",http.lastErrorText());
return;
}
// Make sure a successful response was received.
if (resp.get_StatusCode() != 200) {
wprintf(L"%s\n",resp.statusLine());
wprintf(L"%s\n",resp.header());
wprintf(L"%s\n",resp.bodyStr());
return;
}
// If successful, the resp.BodyStr contains something like this:
// oauth_token=7898d7ba280dc791586dcfd26b37a9&oauth_token_secret=f2a7c267aa
wprintf(L"%s\n",resp.bodyStr());
hashTab.Clear();
hashTab.AddQueryParams(resp.bodyStr());
const wchar_t *accessToken = hashTab.lookupStr(L"oauth_token");
const wchar_t *accessTokenSecret = hashTab.lookupStr(L"oauth_token_secret");
// The access token + secret is what should be saved and used for
// subsequent REST API calls.
wprintf(L"Access Token = %s\n",accessToken);
wprintf(L"Access Token Secret = %s\n",accessTokenSecret);
// Save this access token for future calls.
// Just in case we need user_id and screen_name, save those also..
CkJsonObjectW json;
json.AppendString(L"oauth_token",accessToken);
json.AppendString(L"oauth_token_secret",accessTokenSecret);
CkFileAccessW fac;
fac.WriteEntireTextFile(L"qa_data/tokens/etsy.json",json.emit(),L"utf-8",false);
wprintf(L"Success.\n");
}