/// <summary>
/// Populates a file with action details from WOPI discovery based on the file extension
/// </summary>
public async static Task PopulateActions(this DetailedFileModel file)
{
// Get the discovery informations
var actions = await WopiDiscovery.GetActions();
var fileExt = file.BaseFileName.Substring(file.BaseFileName.LastIndexOf('.') + 1).ToLower();
file.Actions = actions.Where(i => i.ext == fileExt).OrderBy(i => i.isDefault).ToList();
}
public async Task <ActionResult> Detail(string id)
{
var userId = User.Identity.Name;
var tenant = new MailAddress(userId).Host.Replace(".", "-");
// Make sure an action was passed in
if (String.IsNullOrEmpty(Request["action"]))
{
return(RedirectToAction("Error", "Home", new { error = "No action provided" }));
}
var wopiFileRepository = new WopiFileRepository();
var result = await wopiFileRepository.GetFileInfoByTenantUser(id, userId, tenant);
// Check for null file
if (result.Item1 == HttpStatusCode.NotFound)
{
return(RedirectToAction("Error", "Home", new { error = "Files does not exist" }));
}
else if (result.Item1 == HttpStatusCode.Unauthorized)
{
return(RedirectToAction("Error", "Home", new { error = "Not authorized to access file" }));
}
else if (result.Item1 == HttpStatusCode.OK)
{
var wopiFile = result.Item2;
// Use discovery to determine endpoint to leverage
List <WopiAction> discoData = await WopiDiscovery.GetActions();
var fileExt = wopiFile.FileName.Substring(wopiFile.FileName.LastIndexOf('.') + 1).ToLower();
var action = discoData.FirstOrDefault(i => i.name == Request["action"] && i.ext == fileExt);
// Make sure the action isn't null
if (action != null)
{
string urlsrc = WopiDiscovery.GetActionUrl(action, wopiFile.FileId.ToString(), Request.Url.Authority);
// Generate JWT token for the user/document
WopiSecurity wopiSecurity = new WopiSecurity();
var token = wopiSecurity.GenerateToken(User.Identity.Name.ToLower());
ViewData["access_token"] = wopiSecurity.WriteToken(token);
ViewData["access_token_ttl"] = token.ValidTo.Subtract(new DateTime(1970, 1, 1)).TotalMilliseconds;
ViewData["wopi_urlsrc"] = urlsrc;
return(View());
}
else
{
// This will only hit if the extension isn't supported by WOPI
return(RedirectToAction("Error", "Home", new { error = "File is not a supported WOPI extension" }));
}
}
else
{
return(RedirectToAction("Error", "Home", new { error = "Internal server error" }));
}
}
/// <summary>
/// Populates a file with action details from WOPI discovery based on the file extension
/// </summary>
public async static Task PopulateActions(this WopiFileModel model)
{
// Get the discovery informations
var actions = await WopiDiscovery.GetActions();
var extension = model.FileExtension;
if (extension.StartsWith("."))
{
extension = extension.Substring(1);
}
model.Actions = actions.Where(i => i.ext == extension).OrderBy(i => i.isDefault).ToList();
}
private async Task PopulateActions()
{
// Get the discovery informations
var actions = await WopiDiscovery.GetActions();
var extension = FileExtension;
if (extension.StartsWith("."))
{
extension = extension.Substring(1);
}
Actions = actions.Where(i => i.ext == extension).OrderBy(i => i.isDefault).ToList();
}
public override async Task <WopiResponse> PutRelativeFileSpecific(PutRelativeFileSpecificRequest putRelativeFileSpecificRequest)
{
var userId = WopiSecurity.GetIdentityNameFromToken(putRelativeFileSpecificRequest.AccessToken);
var wopiFileRepository = new WopiFileRepository();
var response = await wopiFileRepository.CreateCopy(putRelativeFileSpecificRequest.ResourceId, userId, putRelativeFileSpecificRequest.RelativeTarget, putRelativeFileSpecificRequest.OverwriteRelativeTarget);
if (response.Item1 == HttpStatusCode.NotFound)
{
return(putRelativeFileSpecificRequest.ResponseNotFound());
}
else if (response.Item1 == HttpStatusCode.BadRequest)
{
return(putRelativeFileSpecificRequest.ResponseBadRequest());
}
else if (response.Item1 == HttpStatusCode.Conflict)
{
return(putRelativeFileSpecificRequest.ResponseLockConflict(response.Item3));
}
else if (response.Item1 == HttpStatusCode.OK)
{
// Get access token for the new file
WopiSecurity security = new WopiSecurity();
var token = security.GenerateToken(response.Item2.OwnerId);
var tokenStr = security.WriteToken(token);
var url = new Uri(string.Format("https://{0}/wopi/files/{1}?access_token={2}",
putRelativeFileSpecificRequest.RequestUri.Authority, response.Item2.FileId, tokenStr));
Uri hostViewUrl = null;
Uri hostEditUrl = null;
var actions = await WopiDiscovery.GetActions();
var view = actions.FirstOrDefault(i => i.ext == response.Item2.FileExtension && i.name == "view");
if (view != null)
{
hostViewUrl = new Uri(WopiDiscovery.GetActionUrl(view, response.Item2.FileId, putRelativeFileSpecificRequest.RequestUri.Authority));
}
var edit = actions.FirstOrDefault(i => i.ext == response.Item2.FileExtension && i.name == "edit");
if (edit != null)
{
hostEditUrl = new Uri(WopiDiscovery.GetActionUrl(edit, response.Item2.FileId, putRelativeFileSpecificRequest.RequestUri.Authority));
}
return(putRelativeFileSpecificRequest.ResponseOK(response.Item2.FileName, url, hostViewUrl, hostEditUrl));
}
else
{
return(putRelativeFileSpecificRequest.ResponseServerError(string.Format("Unknown HTTPStatusCode from WopiFileRepository.CreateCopy: {0}", response.Item1)));
}
}
public override async Task <WopiResponse> CheckFileInfo(CheckFileInfoRequest checkFileInfoRequest)
{
// Lookup the file in the database
var itemId = new Guid(checkFileInfoRequest.ResourceId);
var wopiFile = DocumentDBRepository <DetailedFileModel> .GetItem("Files", file => file.id == itemId);
// Check for null file
if (wopiFile != null)
{
// Get discovery information
var fileExt = wopiFile.BaseFileName.Substring(wopiFile.BaseFileName.LastIndexOf('.') + 1).ToLower();
var actions = await WopiDiscovery.GetActions();
// Augments the file with additional properties CloseUrl, HostViewUrl, HostEditUrl
wopiFile.CloseUrl = String.Format("https://{0}", checkFileInfoRequest.RequestUri.Authority);
var view = actions.FirstOrDefault(i => i.ext == fileExt && i.name == "view");
if (view != null)
{
wopiFile.HostViewUrl = WopiDiscovery.GetActionUrl(view, wopiFile.id.ToString(), checkFileInfoRequest.RequestUri.Authority);
}
var edit = actions.FirstOrDefault(i => i.ext == fileExt && i.name == "edit");
if (edit != null)
{
wopiFile.HostEditUrl = WopiDiscovery.GetActionUrl(edit, wopiFile.id.ToString(), checkFileInfoRequest.RequestUri.Authority);
}
// Get the user from the token (token is already validated)
wopiFile.UserId = WopiSecurity.GetUserFromToken(checkFileInfoRequest.AccessToken);
// Write the response and return a success 200
var wopiResponse = checkFileInfoRequest.ResponseOK(wopiFile.BaseFileName, wopiFile.OwnerId, wopiFile.Size, wopiFile.UserId, wopiFile.Version.ToString());
// Add optional items
wopiResponse.CloseUrl = new Uri(wopiFile.CloseUrl);
if (wopiFile.HostViewUrl != null)
{
wopiResponse.HostViewUrl = new Uri(wopiFile.HostViewUrl);
}
if (wopiFile.HostEditUrl != null)
{
wopiResponse.HostEditUrl = new Uri(wopiFile.HostEditUrl);
}
return(wopiResponse);
}
else
{
return(checkFileInfoRequest.ResponseNotFound());
}
}
/// <summary>
/// Validates the WOPI Proof on an incoming WOPI request
/// </summary>
public async static Task <bool> Validate(WopiRequest wopiRequest)
{
var hostUrl = wopiRequest.RequestUri.OriginalString.Replace(":44300", "").Replace(":443", "");
// Make sure the request has the correct headers
if (wopiRequest.Proof == null ||
wopiRequest.Timestamp == null)
{
return(false);
}
// Set the requested proof values
var requestProof = wopiRequest.Proof;
var requestProofOld = String.Empty;
if (wopiRequest.ProofOld != null)
{
requestProofOld = wopiRequest.ProofOld;
}
// Get the WOPI proof info from discovery
var discoProof = await WopiDiscovery.getWopiProof();
// Encode the values into bytes
var accessTokenBytes = Encoding.UTF8.GetBytes(wopiRequest.AccessToken);
var hostUrlBytes = Encoding.UTF8.GetBytes(hostUrl.ToUpperInvariant());
var timeStampBytes = BitConverter.GetBytes(Convert.ToInt64(wopiRequest.Timestamp)).Reverse().ToArray();
// Build expected proof
List <byte> expected = new List <byte>(
4 + accessTokenBytes.Length +
4 + hostUrlBytes.Length +
4 + timeStampBytes.Length);
// Add the values to the expected variable
expected.AddRange(BitConverter.GetBytes(accessTokenBytes.Length).Reverse().ToArray());
expected.AddRange(accessTokenBytes);
expected.AddRange(BitConverter.GetBytes(hostUrlBytes.Length).Reverse().ToArray());
expected.AddRange(hostUrlBytes);
expected.AddRange(BitConverter.GetBytes(timeStampBytes.Length).Reverse().ToArray());
expected.AddRange(timeStampBytes);
byte[] expectedBytes = expected.ToArray();
return(verifyProof(expectedBytes, requestProof, discoProof.value) ||
verifyProof(expectedBytes, requestProof, discoProof.oldvalue) ||
verifyProof(expectedBytes, requestProofOld, discoProof.value));
}
public override async Task <WopiResponse> PutRelativeFileSuggested(PutRelativeFileSuggestedRequest putRelativeFileSuggestedRequest)
{
var userId = WopiSecurity.GetIdentityNameFromToken(putRelativeFileSuggestedRequest.AccessToken);
var wopiFileRepository = new WopiFileRepository();
var response = await wopiFileRepository.CreateCopySuggested(putRelativeFileSuggestedRequest.ResourceId, userId, putRelativeFileSuggestedRequest.SuggestedTarget);
if (response.Item1 == HttpStatusCode.NotFound)
{
return(putRelativeFileSuggestedRequest.ResponseNotFound());
}
else if (response.Item1 == HttpStatusCode.OK)
{
// Get access token for the new file
WopiSecurity security = new WopiSecurity();
var token = security.GenerateToken(response.Item2.OwnerId);
var tokenStr = security.WriteToken(token);
//var name = newFile.BaseFileName;
var url = new Uri(string.Format("https://{0}/wopi/files/{1}?access_token={2}",
putRelativeFileSuggestedRequest.RequestUri.Authority, response.Item2.FileId, tokenStr));
// Add the optional properties to response if applicable (HostViewUrl, HostEditUrl)
Uri hostViewUrl = null;
Uri hostEditUrl = null;
var actions = await WopiDiscovery.GetActions();
var view = actions.FirstOrDefault(i => i.ext == response.Item2.FileExtension && i.name == "view");
if (view != null)
{
hostViewUrl = new Uri(WopiDiscovery.GetActionUrl(view, response.Item2.FileId, putRelativeFileSuggestedRequest.RequestUri.Authority));
}
var edit = actions.FirstOrDefault(i => i.ext == response.Item2.FileExtension && i.name == "edit");
if (edit != null)
{
hostEditUrl = new Uri(WopiDiscovery.GetActionUrl(edit, response.Item2.FileId, putRelativeFileSuggestedRequest.RequestUri.Authority));
}
// Write the response and return a success 200
return(putRelativeFileSuggestedRequest.ResponseOK(response.Item2.FileName, url, hostViewUrl, hostEditUrl));
}
else
{
return(putRelativeFileSuggestedRequest.ResponseServerError(string.Format("Unknown HTTPStatusCode from WopiFileRepository.CreateCopySuggested: {0}", response.Item1)));
}
}
public async Task <ActionResult> Detail(Guid id)
{
// Make sure an action was passed in
if (String.IsNullOrEmpty(Request["action"]))
{
return(RedirectToAction("Error", "Home", new { error = "No action provided" }));
}
// Get the specific file from DocumentDB
var wopiFile = DocumentDBRepository <FileModel> .GetItem("Files",
i => i.OwnerId == User.Identity.Name.ToLower() && i.id == id);
// Check for null file
if (wopiFile == null)
{
return(RedirectToAction("Error", "Home", new { error = "Files does not exist" }));
}
// Use discovery to determine endpoint to leverage
List <WopiAction> discoData = await WopiDiscovery.GetActions();
var fileExt = wopiFile.BaseFileName.Substring(wopiFile.BaseFileName.LastIndexOf('.') + 1).ToLower();
var action = discoData.FirstOrDefault(i => i.name == Request["action"] && i.ext == fileExt);
// Make sure the action isn't null
if (action != null)
{
string urlsrc = WopiDiscovery.GetActionUrl(action, wopiFile.id.ToString(), Request.Url.Authority);
// Generate JWT token for the user/document
WopiSecurity wopiSecurity = new WopiSecurity();
var token = wopiSecurity.GenerateToken(User.Identity.Name.ToLower(), getUserContainer(), id.ToString());
ViewData["access_token"] = wopiSecurity.WriteToken(token);
ViewData["access_token_ttl"] = token.ValidTo.Subtract(new DateTime(1970, 1, 1)).TotalMilliseconds;
ViewData["wopi_urlsrc"] = urlsrc;
return(View());
}
else
{
// This will only hit if the extension isn't supported by WOPI
return(RedirectToAction("Error", "Home", new { error = "File is not a supported WOPI extension" }));
}
}
public override async Task <WopiResponse> GetFile(GetFileRequest getFileRequest)
{
// Lookup the file in the database
var itemId = new Guid(getFileRequest.ResourceId);
var wopiFile = DocumentDBRepository <DetailedFileModel> .GetItem("Files", file => file.id == itemId);
// Check for null file
if (wopiFile != null)
{
// Get discovery information
var fileExt = wopiFile.BaseFileName.Substring(wopiFile.BaseFileName.LastIndexOf('.') + 1).ToLower();
var actions = await WopiDiscovery.GetActions();
// Augments the file with additional properties CloseUrl, HostViewUrl, HostEditUrl
wopiFile.CloseUrl = String.Format("https://{0}", getFileRequest.RequestUri.Authority);
var view = actions.FirstOrDefault(i => i.ext == fileExt && i.name == "view");
if (view != null)
{
wopiFile.HostViewUrl = WopiDiscovery.GetActionUrl(view, wopiFile.id.ToString(), getFileRequest.RequestUri.Authority);
}
var edit = actions.FirstOrDefault(i => i.ext == fileExt && i.name == "edit");
if (edit != null)
{
wopiFile.HostEditUrl = WopiDiscovery.GetActionUrl(edit, wopiFile.id.ToString(), getFileRequest.RequestUri.Authority);
}
// Get the user from the token (token is already validated)
wopiFile.UserId = WopiSecurity.GetUserFromToken(getFileRequest.AccessToken);
// Call the appropriate handler for the WOPI request we received
// Get the file from blob storage
var bytes = await AzureStorageUtil.GetFile(wopiFile.id.ToString(), wopiFile.Container);
// Write the response and return success 200
return(getFileRequest.ResponseOK(new ByteArrayContent(bytes)));
}
else
{
return(getFileRequest.ResponseNotFound());
}
}
public override async Task <WopiResponse> CheckFileInfo(CheckFileInfoRequest checkFileInfoRequest)
{
var userId = WopiSecurity.GetIdentityNameFromToken(checkFileInfoRequest.AccessToken);
// For this demo server, determine tenant by host part of email address
var tenant = new MailAddress(userId).Host.Replace(".", "-");
// Lookup the file in the database using special repository method which grants access limited access to users in same tenant (same email domain)
var wopiFileRepository = new WopiFileRepository();
var response = await wopiFileRepository.GetFileInfoByTenantUser(checkFileInfoRequest.ResourceId, userId, tenant);
// Check for null file
if (response.Item1 == HttpStatusCode.NotFound)
{
return(checkFileInfoRequest.ResponseNotFound());
}
else if (response.Item1 == HttpStatusCode.OK)
{
var wopiFile = response.Item2;
// Get discovery information
var actions = await WopiDiscovery.GetActions();
string hostViewUrl = null, hostEditUrl = null;
var closeUrl = String.Format("https://{0}", checkFileInfoRequest.RequestUri.Authority);
var view = actions.FirstOrDefault(i => i.ext == wopiFile.FileExtension && i.name == "view");
if (view != null)
{
hostViewUrl = WopiDiscovery.GetActionUrl(view, wopiFile.FileId.ToString(), checkFileInfoRequest.RequestUri.Authority);
}
var edit = actions.FirstOrDefault(i => i.ext == wopiFile.FileExtension && i.name == "edit");
if (edit != null)
{
hostEditUrl = WopiDiscovery.GetActionUrl(edit, wopiFile.FileId.ToString(), checkFileInfoRequest.RequestUri.Authority);
}
// Write the response and return a success 200
var wopiResponse = checkFileInfoRequest.ResponseOK(wopiFile.FileName, wopiFile.OwnerId, wopiFile.Size, userId, wopiFile.Version.ToString());
// Add optional items
wopiResponse.CloseUrl = new Uri(closeUrl);
if (hostViewUrl != null)
{
wopiResponse.HostViewUrl = new Uri(hostViewUrl);
}
if (hostEditUrl != null)
{
wopiResponse.HostEditUrl = new Uri(hostEditUrl);
}
wopiResponse.UserInfo = wopiFile.FilePermissions.First().UserInfo;
return(wopiResponse);
}
else
{
return(checkFileInfoRequest.ResponseServerError(string.Format("Unknown response from WopiFileRepository.GetFileInfoByTenantUser: {0}", response.Item1)));
}
}
public override async Task <WopiResponse> PutRelativeFileSuggested(PutRelativeFileSuggestedRequest putRelativeFileSuggestedRequest)
{
WopiResponse wopiResponse = null;
var file = DocumentDBRepository <DetailedFileModel> .GetItem("Files", i => i.id.ToString() == putRelativeFileSuggestedRequest.ResourceId);
// Check for null file
if (file != null)
{
var inputStream = await putRelativeFileSuggestedRequest.Content.ReadAsStreamAsync();
// Suggested mode...might just be an extension
var fileName = putRelativeFileSuggestedRequest.SuggestedTarget;
if (fileName.IndexOf('.') == 0)
{
fileName = file.BaseFileName.Substring(0, file.BaseFileName.LastIndexOf('.')) + fileName;
}
// Create the file entity
FileModel newFile = new FileModel()
{
id = Guid.NewGuid(),
OwnerId = file.OwnerId,
BaseFileName = fileName,
Size = inputStream.Length,
Container = file.Container,
Version = 1
};
// First stream the file into blob storage
var bytes = new byte[inputStream.Length];
await inputStream.ReadAsync(bytes, 0, (int)inputStream.Length);
var id = await Utils.AzureStorageUtil.UploadFile(newFile.id.ToString(), newFile.Container, bytes);
// Write the details into documentDB
await DocumentDBRepository <FileModel> .CreateItemAsync("Files", (FileModel)newFile);
// Get access token for the new file
WopiSecurity security = new WopiSecurity();
var token = security.GenerateToken(newFile.OwnerId, newFile.Container, newFile.id.ToString());
var tokenStr = security.WriteToken(token);
// Prepare the Json response
var name = newFile.BaseFileName;
var url = string.Format("https://{0}/wopi/files/{1}?access_token={2}",
putRelativeFileSuggestedRequest.RequestUri.Authority, newFile.id.ToString(), tokenStr);
// Add the optional properties to response if applicable (HostViewUrl, HostEditUrl)
string hostViewUrl = null;
string hostEditUrl = null;
var actions = await WopiDiscovery.GetActions();
var fileExt = newFile.BaseFileName.Substring(newFile.BaseFileName.LastIndexOf('.') + 1).ToLower();
var view = actions.FirstOrDefault(i => i.ext == fileExt && i.name == "view");
if (view != null)
{
hostViewUrl = WopiDiscovery.GetActionUrl(view, newFile.id.ToString(), putRelativeFileSuggestedRequest.RequestUri.Authority);
}
var edit = actions.FirstOrDefault(i => i.ext == fileExt && i.name == "edit");
if (edit != null)
{
hostEditUrl = WopiDiscovery.GetActionUrl(edit, newFile.id.ToString(), putRelativeFileSuggestedRequest.RequestUri.Authority);
}
// Write the response and return a success 200
wopiResponse = putRelativeFileSuggestedRequest.ResponseOK(fileName, new Uri(url), new Uri(hostViewUrl), new Uri(hostEditUrl));
}
else
{
wopiResponse = putRelativeFileSuggestedRequest.ResponseNotFound();
}
return(wopiResponse);
}
