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(Unicode C) 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 <C_CkSocketW.h> #include <C_CkRestW.h> #include <C_CkPfxW.h> #include <C_CkPrivateKeyW.h> #include <C_CkOAuth1W.h> #include <C_CkStringBuilderW.h> #include <C_CkXmlW.h> void ChilkatSample(void) { HCkSocketW tunnel; const wchar_t *sshHostname; int sshPort; BOOL success; HCkRestW rest; HCkSocketW channel; BOOL bTls; int port; int maxWaitMs; const wchar_t *consumerKey; const wchar_t *consumerSecret; HCkPfxW pfx; HCkPrivateKeyW privKeyFromPfx; HCkPrivateKeyW privKeyFromPem; HCkOAuth1W oauth1; HCkStringBuilderW sbXml; BOOL bAutoTrim; HCkXmlW xml; int recordCount; int i; // This example requires Chilkat v9.5.0.64 or later tunnel = CkSocketW_Create(); sshHostname = L"www.my-ssh-server.com"; sshPort = 22; // Connect to an SSH server and establish the SSH tunnel: success = CkSocketW_SshOpenTunnel(tunnel,sshHostname,sshPort); if (success != TRUE) { wprintf(L"%s\n",CkSocketW_lastErrorText(tunnel)); CkSocketW_Dispose(tunnel); return; } // Authenticate with the SSH server via a login/password // or with a public key. // This example demonstrates SSH password authentication. success = CkSocketW_SshAuthenticatePw(tunnel,L"mySshLogin",L"mySshPassword"); if (success != TRUE) { wprintf(L"%s\n",CkSocketW_lastErrorText(tunnel)); CkSocketW_Dispose(tunnel); 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. rest = CkRestW_Create(); bTls = TRUE; port = 443; maxWaitMs = 7000; // This returns a socket object that is a single channel within the SSH tunnel. channel = CkSocketW_SshOpenChannel(tunnel,L"api.xero.com",port,bTls,maxWaitMs); if (CkSocketW_getLastMethodSuccess(tunnel) != TRUE) { wprintf(L"%s\n",CkSocketW_lastErrorText(tunnel)); CkSocketW_Dispose(tunnel); CkRestW_Dispose(rest); 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 = CkRestW_UseConnection(rest,channel,TRUE); if (success != TRUE) { wprintf(L"%s\n",CkRestW_lastErrorText(rest)); CkSocketW_Dispose(channel); CkSocketW_Dispose(tunnel); CkRestW_Dispose(rest); return; } // OK, we're connected. // ----------------------------------------------------------------- // Now setup the OAuth1 authenticator.. consumerKey = L"XERO_PRIVATE_APP_KEY"; consumerSecret = L"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. pfx = CkPfxW_Create(); success = CkPfxW_LoadPfxFile(pfx,L"qa_data/certs/xero_private_app/public_privatekey.pfx",L"PFX_PASSWORD"); if (success != TRUE) { wprintf(L"%s\n",CkPfxW_lastErrorText(pfx)); CkSocketW_Dispose(tunnel); CkRestW_Dispose(rest); CkPfxW_Dispose(pfx); return; } privKeyFromPfx = CkPfxW_GetPrivateKey(pfx,0); if (CkPfxW_getLastMethodSuccess(pfx) != TRUE) { wprintf(L"%s\n",CkPfxW_lastErrorText(pfx)); CkSocketW_Dispose(tunnel); CkRestW_Dispose(rest); CkPfxW_Dispose(pfx); return; } // Or we can load from a PEM.. privKeyFromPem = CkPrivateKeyW_Create(); success = CkPrivateKeyW_LoadPemFile(privKeyFromPem,L"qa_data/certs/xero_private_app/privatekey.pem"); if (success != TRUE) { wprintf(L"%s\n",CkPrivateKeyW_lastErrorText(privKeyFromPem)); CkSocketW_Dispose(tunnel); CkRestW_Dispose(rest); CkPfxW_Dispose(pfx); CkPrivateKeyW_Dispose(privKeyFromPem); 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). oauth1 = CkOAuth1W_Create(); CkOAuth1W_putConsumerKey(oauth1,consumerKey); CkOAuth1W_putConsumerSecret(oauth1,consumerSecret); CkOAuth1W_putToken(oauth1,consumerKey); CkOAuth1W_putTokenSecret(oauth1,consumerSecret); CkOAuth1W_putSignatureMethod(oauth1,L"RSA-SHA1"); CkOAuth1W_SetRsaKey(oauth1,privKeyFromPfx); CkPrivateKeyW_Dispose(privKeyFromPfx); // Install the OAuth1 authenticator. CkRestW_SetAuthOAuth1(rest,oauth1,FALSE); wprintf(L"OK, the Xero OAuth1 is initialized and the REST object is ready to make REST API calls..\n"); // ----------------------------------------------------------------- // Make a call to verify that OAuth1 through an HTTP proxy works.. // Get the full list of contacts. sbXml = CkStringBuilderW_Create(); success = CkRestW_FullRequestNoBodySb(rest,L"GET",L"/api.xro/2.0/Contacts",sbXml); if (success != TRUE) { wprintf(L"%s\n",CkRestW_lastErrorText(rest)); CkSocketW_Dispose(tunnel); CkRestW_Dispose(rest); CkPfxW_Dispose(pfx); CkPrivateKeyW_Dispose(privKeyFromPem); CkOAuth1W_Dispose(oauth1); CkStringBuilderW_Dispose(sbXml); return; } // A 200 response is expected for actual success. if (CkRestW_getResponseStatusCode(rest) != 200) { wprintf(L"%s\n",CkStringBuilderW_getAsString(sbXml)); CkSocketW_Dispose(tunnel); CkRestW_Dispose(rest); CkPfxW_Dispose(pfx); CkPrivateKeyW_Dispose(privKeyFromPem); CkOAuth1W_Dispose(oauth1); CkStringBuilderW_Dispose(sbXml); return; } // Iterate over the contacts.. bAutoTrim = FALSE; xml = CkXmlW_Create(); CkXmlW_LoadSb(xml,sbXml,bAutoTrim); CkXmlW_SaveXml(xml,L"qa_cache/xero_contacts.xml"); // How many records exist? recordCount = CkXmlW_NumChildrenAt(xml,L"Contacts"); wprintf(L"numRecords = %d\n",recordCount); i = 0; while (i < recordCount) { CkXmlW_putI(xml,i); wprintf(L"ContactID: %s\n",CkXmlW_getChildContent(xml,L"Contacts|Contact[i]|ContactID")); i = i + 1; } CkSocketW_Dispose(tunnel); CkRestW_Dispose(rest); CkPfxW_Dispose(pfx); CkPrivateKeyW_Dispose(privKeyFromPem); CkOAuth1W_Dispose(oauth1); CkStringBuilderW_Dispose(sbXml); CkXmlW_Dispose(xml); } |
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