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(MFC) Xero API through an SSH TunnelThis example demonstrates connecting through an SSH Tunnel w/ 2-legged OAuth for a Xero private application. This example requires Chilkat v9.5.0.64 or later
#include <CkSocket.h> #include <CkRest.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 CkSocket tunnel; const char *sshHostname = "www.my-ssh-server.com"; int sshPort = 22; // Connect to an SSH server and establish the SSH tunnel: bool success = tunnel.SshOpenTunnel(sshHostname,sshPort); if (success != true) { strOut.append(tunnel.lastErrorText()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } // Authenticate with the SSH server via a login/password // or with a public key. // This example demonstrates SSH password authentication. success = tunnel.SshAuthenticatePw("mySshLogin","mySshPassword"); if (success != true) { strOut.append(tunnel.lastErrorText()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } // OK, the SSH tunnel is setup. Now open a channel within the tunnel. // (Any number of channels may be created from the same SSH tunnel. // Multiple channels may coexist at the same time.) // 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; CkSocket *channel = 0; bool bTls = true; int port = 443; int maxWaitMs = 7000; // This returns a socket object that is a single channel within the SSH tunnel. channel = tunnel.SshOpenChannel("api.xero.com",port,bTls,maxWaitMs); if (tunnel.get_LastMethodSuccess() != true) { strOut.append(tunnel.lastErrorText()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } // Use the connection. (This connection is a TLS running on an SSH channel through an SSH tunnel. // In other words, TLS is wrapped within the SSH tunnel.) success = rest.UseConnection(*channel,true); if (success != true) { strOut.append(rest.lastErrorText()); strOut.append("\r\n"); delete channel; SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } // OK, we're connected. // ----------------------------------------------------------------- // 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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