(Unicode C++) SharePoint -- Upload File

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Demonstrates how to upload a file to a SharePoint folder.

For more information, see https://learn.microsoft.com/en-us/sharepoint/dev/sp-add-ins/working-with-folders-and-files-with-rest

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#include <CkHttpW.h>
#include <CkHttpResponseW.h>
#include <CkXmlW.h>
#include <CkHttpRequestW.h>

void ChilkatSample(void)
    {
    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // -------------------------------------------------------------------------
    // The following comments apply to SharePoint Windows classic authentication.
    // -------------------------------------------------------------------------
    // For example, imagine our SharePoint endpoint is https://xyzoffice.mycompany.com/
    // The SHAREPOINT_NTLM_DOMAIN would be "mycompany.com"
    // The SHAREPOINT_HTTPS_DOMAIN would be "xyzoffice.mycompany.com"
    // Also, the SHAREPOINT_USERNAME would be just the name, not a full email address.
    // for example, "chilkat" instead of "chilkat@mycompany.com"

    CkHttpW http;

    // If SharePoint Windows classic authentication is used, then set the 
    // Login, Password, LoginDomain, and NtlmAuth properties.
    http.put_Login(L"SHAREPOINT_USERNAME");
    http.put_Password(L"SHAREPOINT_PASSWORD");
    http.put_LoginDomain(L"SHAREPOINT_NTLM_DOMAIN");
    http.put_NtlmAuth(true);

    // -------------------------------------------------------------------------
    // The more common case is to use SharePoint Online authentication (via the SPOIDCRL cookie).
    // If so, do not set Login, Password, LoginDomain, and NtlmAuth, and instead
    // establish the cookie as shown at SharePoint Online Authentication
    // -------------------------------------------------------------------------

    // When creating, updating, and deleting SharePoint entities, we'll need
    // to first get the server's form digest value to send in the X-RequestDigest header.
    // This can be retrieved by making a POST request with an empty body to
    // http://<site url>/_api/contextinfo and extracting the value of the
    // d:FormDigestValue node in the XML that the contextinfo endpoint returns.

    // Apparently, SharePoint needs an "Accept" request header equal to "application/xml",
    // otherwise SharePoint will return an utterly incomprehensible and useless error message.
    const wchar_t *savedAccept = http.ck_accept();
    http.put_Accept(L"application/xml");

    // If your Sharepoint site is within a site collection, then use "https://SHAREPOINT_HTTPS_DOMAIN/sites/teamA/_api/contextinfo" where "teamA" is the name of the site.
    CkHttpResponseW *resp = http.PostXml(L"https://SHAREPOINT_HTTPS_DOMAIN/_api/contextinfo",L"",L"utf-8");
    if (http.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    // Restore the default Accept header
    http.put_Accept(savedAccept);

    if (resp->get_StatusCode() != 200) {
        // A response status code not equal to 200 indicates failure.
        wprintf(L"Response status code = %d\n",resp->get_StatusCode());
        wprintf(L"Response body:\n");
        wprintf(L"%s\n",resp->bodyStr());
        delete resp;
        return;
    }

    CkXmlW xml;
    xml.LoadXml(resp->bodyStr());
    delete resp;

    wprintf(L"%s\n",xml.getXml());

    // The response XML looks like this:

    // <?xml version="1.0" encoding="utf-8" ?>
    // <d:GetContextWebInformation xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices" xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns:georss="http://www.georss.org/georss" xmlns:gml="http://www.opengis.net/gml" m:type="SP.ContextWebInformation">
    //     <d:FormDigestTimeoutSeconds m:type="Edm.Int32">1800</d:FormDigestTimeoutSeconds>
    //     <d:FormDigestValue>0x3059FFB920651834540F3E6792EA73F5746B302E953FF4E808E485DB1E6C2836C7CF924644995F092453B02A94DE14A7962674B7B16780AF16EAFB8C246BCDC7,12 Apr 2017 17:08:22 -0000</d:FormDigestValue>
    //     <d:LibraryVersion>15.0.4569.1000</d:LibraryVersion>
    //     <d:SiteFullUrl>https://SHAREPOINT_HTTPS_DOMAIN</d:SiteFullUrl>
    //     <d:SupportedSchemaVersions m:type="Collection(Edm.String)">
    //         <d:element>14.0.0.0</d:element>
    //         <d:element>15.0.0.0</d:element>
    //     </d:SupportedSchemaVersions>
    //     <d:WebFullUrl>https://SHAREPOINT_HTTPS_DOMAIN</d:WebFullUrl>
    // </d:GetContextWebInformation>
    // 

    // We'll use the d:FormDigestValue in the X-RequestDigest request header
    // for the actual file upload.

    // --------------------------------------------------------------------
    // Now upload a file named "penguins2.jpg" to the "/Documents" folder.

    CkHttpRequestW req;
    req.put_HttpVerb(L"POST");
    // Change "/Documents" to whatever folder is the destination.
    // If your Sharepoint site is within a site collection, then use "/sites/teamA/_api/web/GetFolderByServerRelativeUrl('/sites/teamA/Documents')/Files/add(url='penguins2.jpg',overwrite=true)" where "teamA" is the name of the site.
    req.put_Path(L"/_api/web/GetFolderByServerRelativeUrl('/Documents')/Files/add(url='penguins2.jpg',overwrite=true)");
    // Give the location of the file to be uploaded.  
    // Note: The file is not loaded into memory at this point.  It is never fully loaded
    // into memory.  Instead, the file data is streamed directly from the file when
    // when the upload occurs.
    req.StreamBodyFromFile(L"qa_data/jpg/penguins2.jpg");

    // Add the X-RequestDigest header field.
    req.AddHeader(L"X-RequestDigest",xml.getChildContent(L"d:FormDigestValue"));

    // Set the Accept header
    req.AddHeader(L"Accept",L"application/xml");

    // Do the upload using https (TLS). Port 443 is the default port for https.
    bool bUseTls = true;
    resp = http.SynchronousRequest(L"SHAREPOINT_HTTPS_DOMAIN",443,bUseTls,req);
    if (http.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    // The response body contains XML.  Load it into our xml object..
    xml.LoadXml(resp->bodyStr());

    if (resp->get_StatusCode() != 200) {
        wprintf(L"Response status code = %d\n",resp->get_StatusCode());
        wprintf(L"%s\n",xml.getXml());
        wprintf(L"Failed\n");
        delete resp;
        return;
    }

    delete resp;

    // Show the successful XML response.
    wprintf(L"%s\n",xml.getXml());
    wprintf(L"Success.\n");

    // A successful XML response looks like this:

    // <?xml version="1.0" encoding="utf-8" ?>
    // <entry xml:base="https://SHAREPOINT_HTTPS_DOMAIN/_api/" xmlns="http://www.w3.org/2005/Atom" xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices" xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns:georss="http://www.georss.org/georss" xmlns:gml="http://www.opengis.net/gml">
    //     <id>Web/GetFileByServerRelativeUrl('/Documents/penguins2.jpg')</id>
    //     <category term="SP.File" scheme="http://schemas.microsoft.com/ado/2007/08/dataservices/scheme" />
    //     <link rel="edit" href="Web/GetFileByServerRelativeUrl(&apos;/Documents/penguins2.jpg&apos;)" />
    //     <link rel="http://schemas.microsoft.com/ado/2007/08/dataservices/related/Author" type="application/atom+xml;type=entry" title="Author" href="Web/GetFileByServerRelativeUrl(&apos;/Documents/penguins2.jpg&apos;)/Author" />
    //     <link rel="http://schemas.microsoft.com/ado/2007/08/dataservices/related/CheckedOutByUser" type="application/atom+xml;type=entry" title="CheckedOutByUser" href="Web/GetFileByServerRelativeUrl(&apos;/Documents/penguins2.jpg&apos;)/CheckedOutByUser" />
    //     <link rel="http://schemas.microsoft.com/ado/2007/08/dataservices/related/ListItemAllFields" type="application/atom+xml;type=entry" title="ListItemAllFields" href="Web/GetFileByServerRelativeUrl(&apos;/Documents/penguins2.jpg&apos;)/ListItemAllFields" />
    //     <link rel="http://schemas.microsoft.com/ado/2007/08/dataservices/related/LockedByUser" type="application/atom+xml;type=entry" title="LockedByUser" href="Web/GetFileByServerRelativeUrl(&apos;/Documents/penguins2.jpg&apos;)/LockedByUser" />
    //     <link rel="http://schemas.microsoft.com/ado/2007/08/dataservices/related/ModifiedBy" type="application/atom+xml;type=entry" title="ModifiedBy" href="Web/GetFileByServerRelativeUrl(&apos;/Documents/penguins2.jpg&apos;)/ModifiedBy" />
    //     <link rel="http://schemas.microsoft.com/ado/2007/08/dataservices/related/Versions" type="application/atom+xml;type=feed" title="Versions" href="Web/GetFileByServerRelativeUrl(&apos;/Documents/penguins2.jpg&apos;)/Versions" />
    //     <title />
    //     <updated>2017-04-12T17:16:44Z</updated>
    //     <author>
    //         <name />
    //     </author>
    //     <content type="application/xml">
    //         <m:properties>
    //             <d:CheckInComment />
    //             <d:CheckOutType m:type="Edm.Int32">0</d:CheckOutType>
    //             <d:ContentTag>{FC8D1A58-9544-496C-8D9C-19B501A8B322},2,3</d:ContentTag>
    //             <d:CustomizedPageStatus m:type="Edm.Int32">0</d:CustomizedPageStatus>
    //             <d:ETag>"{FC8D1A58-9544-496C-8D9C-19B501A8B322},2"</d:ETag>
    //             <d:Exists m:type="Edm.Boolean">true</d:Exists>
    //             <d:Length m:type="Edm.Int64">99832</d:Length>
    //             <d:Level m:type="Edm.Byte">255</d:Level>
    //             <d:MajorVersion m:type="Edm.Int32">0</d:MajorVersion>
    //             <d:MinorVersion m:type="Edm.Int32">1</d:MinorVersion>
    //             <d:Name>penguins2.jpg</d:Name>
    //             <d:ServerRelativeUrl>/Documents/penguins2.jpg</d:ServerRelativeUrl>
    //             <d:TimeCreated m:type="Edm.DateTime">2017-04-12T17:14:19Z</d:TimeCreated>
    //             <d:TimeLastModified m:type="Edm.DateTime">2017-04-12T17:16:44Z</d:TimeLastModified>
    //             <d:Title m:null="true" />
    //             <d:UIVersion m:type="Edm.Int32">1</d:UIVersion>
    //             <d:UIVersionLabel>0.1</d:UIVersionLabel>
    //         </m:properties>
    //     </content>
    // </entry>
    // 
    // 
    }