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(MFC) Xero API through an SOCKS ProxyThis example demonstrates connecting through a SOCKS proxy w/ 2-legged OAuth for a Xero private application. This example requires Chilkat v9.5.0.64 or later
#include <CkRest.h> #include <CkSocket.h> #include <CkPfx.h> #include <CkPrivateKey.h> #include <CkOAuth1.h> #include <CkStringBuilder.h> #include <CkXml.h> void ChilkatSample(void) { CkString strOut; // This example requires Chilkat v9.5.0.64 or later // This sample code would typically be placed in a subroutine or function // where the rest object is passed by reference. // It does the OAuth1 setup and makes the initial connection. CkRest rest; // Connect to the Xero server through an HTTP proxy, and then tell the REST object // to use the socket connection. CkSocket socket; // Set the SOCKS proxy domain or IP address, port, and SOCKS version number (4 or 5) socket.put_SocksHostname("192.168.1.100"); socket.put_SocksPort(1080); socket.put_SocksVersion(5); // Other properties exist for specifying a SOCKS proxy login and password, // but these are not used in this example. // Connect through the SOCKS proxy.. bool bTls = true; int port = 443; int maxWaitMs = 5000; bool success = socket.Connect("api.xero.com",port,bTls,maxWaitMs); if (success != true) { strOut.append("Connect Failure Error Code: "); strOut.appendInt(socket.get_ConnectFailReason()); strOut.append("\r\n"); strOut.append(socket.lastErrorText()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } // Use the SOCKS proxied TLS connection: success = rest.UseConnection(socket,true); if (success != true) { strOut.append(rest.lastErrorText()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } // OK, we're connected. // The UseConnection method has an internal reference to the underlying/internal socket. // The application can does not need to keep its socket object in existence. // ----------------------------------------------------------------- // Now setup the OAuth1 authenticator.. const char *consumerKey = "XERO_PRIVATE_APP_KEY"; const char *consumerSecret = "XERO_PRIVATE_APP_SECRET"; // Let's get our private key from our PFX (password protected), or the PEM (unprotected). // You can decide which to use. Either is OK, although I would recommend keeping your // private keys in a PFX and not in an unprotected PEM. CkPfx pfx; success = pfx.LoadPfxFile("qa_data/certs/xero_private_app/public_privatekey.pfx","PFX_PASSWORD"); if (success != true) { strOut.append(pfx.lastErrorText()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } CkPrivateKey *privKeyFromPfx = pfx.GetPrivateKey(0); if (pfx.get_LastMethodSuccess() != true) { strOut.append(pfx.lastErrorText()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } // Or we can load from a PEM.. CkPrivateKey privKeyFromPem; success = privKeyFromPem.LoadPemFile("qa_data/certs/xero_private_app/privatekey.pem"); if (success != true) { strOut.append(privKeyFromPem.lastErrorText()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } // Note: There are many other means for loading a private key, including // from other formats and directly from memory (i.e. not file-based). CkOAuth1 oauth1; oauth1.put_ConsumerKey(consumerKey); oauth1.put_ConsumerSecret(consumerSecret); oauth1.put_Token(consumerKey); oauth1.put_TokenSecret(consumerSecret); oauth1.put_SignatureMethod("RSA-SHA1"); oauth1.SetRsaKey(*privKeyFromPfx); delete privKeyFromPfx; // Install the OAuth1 authenticator. rest.SetAuthOAuth1(oauth1,false); strOut.append("OK, the Xero OAuth1 is initialized and the REST object is ready to make REST API calls.."); strOut.append("\r\n"); // ----------------------------------------------------------------- // Make a call to verify that OAuth1 through an HTTP proxy works.. // Get the full list of contacts. CkStringBuilder sbXml; success = rest.FullRequestNoBodySb("GET","/api.xro/2.0/Contacts",sbXml); if (success != true) { strOut.append(rest.lastErrorText()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } // A 200 response is expected for actual success. if (rest.get_ResponseStatusCode() != 200) { strOut.append(sbXml.getAsString()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } // Iterate over the contacts.. bool bAutoTrim = false; CkXml xml; xml.LoadSb(sbXml,bAutoTrim); xml.SaveXml("qa_cache/xero_contacts.xml"); // How many records exist? int recordCount = xml.NumChildrenAt("Contacts"); strOut.append("numRecords = "); strOut.appendInt(recordCount); strOut.append("\r\n"); int i = 0; while (i < recordCount) { xml.put_I(i); strOut.append("ContactID: "); strOut.append(xml.getChildContent("Contacts|Contact[i]|ContactID")); strOut.append("\r\n"); i = i + 1; } SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); } |
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