Rust Requires Chilkat v11.0.0+

List Files and Folders in a SharePoint Documents Library

See more SharePoint Examples

This example shows how to use Chilkat's HttpCurl class to list the files and folders in the root of a SharePoint Documents document library. In Microsoft Graph, a SharePoint document library is represented as a drive. The example demonstrates how HttpCurl automatically resolves the SharePoint site name to a site ID, finds the drive ID for the Documents library, and then retrieves the children of the library's root folder.

Rust

let mut success = false;

// This example lists the files and folders in the root of the SharePoint
// Documents document library.
// 
// In Microsoft Graph terminology, a SharePoint document library is represented
// as a "drive".  The default document library is commonly named "Documents".
// This example shows how HttpCurl can automatically resolve the needed values:
// 
//   site_name  ->  site_id
//   site_id    ->  document_library_id
// 
// After those values are known, the final request lists the children of the
// root folder in the Documents document library.

success = false;

// --------------------------------------------------------------------------------------------------------
// Before running this example, create an Azure App Registration and grant it
// the Microsoft Graph permissions required to access SharePoint.
// 
// The application will authenticate using OAuth2 Client Credentials.
// See:
// How to Create SharePoint App Registration for OAuth 2.0 Client Credentials
// --------------------------------------------------------------------------------------------------------

// Build a JSON authentication configuration.
// HttpCurl will use this information to automatically obtain OAuth2 access tokens.
let json_auth = chilkat::JsonObject::new();

// Enable secret lookup.
// 
// Instead of hard-coding sensitive values such as the client ID,
// client secret, and token endpoint, secret specification strings
// are used.  Chilkat automatically retrieves the actual values from
// Windows Credential Manager (Windows) or Apple Keychain (macOS).
// 
// See:
// Secret Specification Strings
json_auth.set_enable_secrets(true);

success = json_auth.update_string("oauth2.client_id", "!!sharepoint|oauth2|client_id").is_ok();
if success {
    success = json_auth.update_string("oauth2.client_secret", "!!sharepoint|oauth2|client_secret").is_ok();
}

if success {
    success = json_auth.update_string("oauth2.token_endpoint", "!!sharepoint|oauth2|token_endpoint").is_ok();
}

if !success {
    println!("{}", json_auth.last_error_text());
    return;
}

// Request Microsoft Graph permissions that were granted to the application.
let _ = json_auth.update_string("oauth2.scope", "https://graph.microsoft.com/.default");

// ---------------------------------------------------------------------------------------------------

let curl = chilkat::HttpCurl::new();

// Associate the OAuth2 configuration with HttpCurl.
// 
// When the request is executed, Chilkat automatically obtains an access token
// if needed and adds the Authorization: Bearer header to the HTTP request.
let _ = curl.set_auth(&json_auth);

// Define variables whose values are already known.
// 
// These variables are referenced in curl commands using
// {{variable_name}} substitution syntax.
curl.set_var("sharepoint_hostname", "example.sharepoint.com");
curl.set_var("site_name", "test");

// The final request needs a Microsoft Graph site ID.
// 
// Because the application only knows the SharePoint site name,
// define a helper function that can retrieve the site record.
// HttpCurl can execute this function automatically when it needs
// to resolve the site_id variable.
let _ = curl.add_function("getSite", "GET https://graph.microsoft.com/v1.0/sites/root:/sites/{{site_name}}");

// Extract the "id" field from the getSite response and store it
// in the HttpCurl variable named "site_id".
let _ = curl.add_output("getSite", "id", "site_id");

// The next value needed is the drive ID for the Documents document library.
// 
// This function lists the drives, also known as document libraries,
// belonging to the SharePoint site.
let _ = curl.add_function("getDrives", "GET https://graph.microsoft.com/v1.0/sites/{{site_id}}/drives");

// Extract the ID of the drive whose name is "Documents".
// 
// AddOutput2 searches an array in the JSON response.  In this case:
// 
//   response array: value
//   match field:    name
//   match value:    Documents
//   case-sensitive: true
//   output field:   id
//   variable name:  document_library_id
// 
// The result is that document_library_id will contain the drive ID
// for the Documents document library.
let _ = curl.add_output2("getDrives", "value", "name", "Documents", true, "id", "document_library_id");

// The target Microsoft Graph request:
// 
// GET https://graph.microsoft.com/v1.0/sites/{{site_id}}/drives/{{document_library_id}}/root/children
// 
// This lists the files and folders in the root folder of the Documents
// document library.
// 
// The {{site_id}} and {{document_library_id}} variables are not set directly
// by this program.  HttpCurl resolves them automatically by running the
// helper functions defined above.
let curl_command = "GET https://graph.microsoft.com/v1.0/sites/{{site_id}}/drives/{{document_library_id}}/root/children".to_string();

// Execute the request.
// 
// HttpCurl examines the target request and determines that it requires
// both site_id and document_library_id.
// 
// The execution plan becomes:
// 
//   1) Execute getSite to obtain site_id.
//   2) Execute getDrives to obtain document_library_id.
//   3) Substitute both variables into the target request.
//   4) Execute the root/children request.
// 
// The final HTTP response returned by DoYourThing is always the response
// from the target request, which is the last step in the plan.
if curl.do_your_thing(&curl_command).is_err() {
    println!("{}", curl.last_error_text());
    return;
}

// A successful Graph response should return HTTP 200.
// Any other status code typically indicates an authentication,
// permission, site lookup, or document library lookup error.
let status_code = curl.status_code();
if status_code != 200 {
    println!("{}", curl.response_body_str());
    println!("status code = {}", status_code);
    return;
}

// The response body contains a JSON array named "value".
// Each element represents one file or folder in the root of the
// Documents document library.
let json = chilkat::JsonObject::new();
json.set_emit_compact(false);
let _ = curl.get_response_json(&json);
println!("{}", json.emit().unwrap_or_default());
println!("");

// Count the number of items returned in the "value" array.
// 
// This includes both files and folders.
let num_files = json.size_of_array("value");
println!("Number of files: {}", num_files);
println!("");

// Iterate over the files and folders returned by Microsoft Graph
// and display selected properties for each item.
let mut i = 0;
while i < num_files {
    json.set_i(i);

    println!("name: {}", json.string_of("value[i].name").unwrap_or_default());
    println!("webUrl: {}", json.string_of("value[i].webUrl").unwrap_or_default());
    println!("size: {}", json.string_of("value[i].size").unwrap_or_default());
    println!("id: {}", json.string_of("value[i].id").unwrap_or_default());
    println!("-");
    i = i + 1;
}