public async Task <HttpResponseMessage> GetFile(string file_id)
{
var getFileRequest = new GetFileRequest(this.Request, file_id);
WopiResponse wopiResponse = null;
try
{
if (await Authorize(getFileRequest))
{
if (await WopiProof.Validate(getFileRequest))
{
wopiResponse = await GetFile(getFileRequest);
}
else
{
getFileRequest.ResponseServerError("Proof validation failed");
}
}
else
{
wopiResponse = getFileRequest.ResponseUnauthorized();
}
}
catch (Exception ex)
{
wopiResponse = getFileRequest.ResponseServerError(ex.Message);
}
return(wopiResponse.ToHttpResponse());
}
internal async static Task <WopiProof> getWopiProof()
{
var wopiProof = new WopiProof();
// Check cache for this data
MemoryCache memoryCache = MemoryCache.Default;
if (!memoryCache.Contains("WopiProof"))
{
await WopiDiscovery.Refresh();
}
if (memoryCache.Contains("WopiProof"))
{
wopiProof = (WopiProof)memoryCache["WopiProof"];
}
return(wopiProof);
}
/// <summary>
/// Gets the WOPI proof details from the WOPI discovery endpoint and caches it appropriately
/// </summary>
internal async static Task <WopiProof> getWopiProof(HttpContext context)
{
WopiProof wopiProof = null;
// Check cache for this data
MemoryCache memoryCache = MemoryCache.Default;
if (memoryCache.Contains("WopiProof"))
{
wopiProof = (WopiProof)memoryCache["WopiProof"];
}
else
{
HttpClient client = new HttpClient();
using (HttpResponseMessage response = await client.GetAsync(ConfigurationManager.AppSettings["WopiDiscovery"]))
{
if (response.IsSuccessStatusCode)
{
// Read the xml string from the response
string xmlString = await response.Content.ReadAsStringAsync();
// Parse the xml string into Xml
var discoXml = XDocument.Parse(xmlString);
// Convert the discovery xml into list of WopiApp
var proof = discoXml.Descendants("proof-key").FirstOrDefault();
wopiProof = new WopiProof()
{
value = proof.Attribute("value").Value,
modulus = proof.Attribute("modulus").Value,
exponent = proof.Attribute("exponent").Value,
oldvalue = proof.Attribute("oldvalue").Value,
oldmodulus = proof.Attribute("oldmodulus").Value,
oldexponent = proof.Attribute("oldexponent").Value
};
// Add to cache for 20min
memoryCache.Add("WopiProof", wopiProof, DateTimeOffset.Now.AddMinutes(20));
}
}
}
return(wopiProof);
}
public async Task RefreshAsync()
{
// Use the Wopi Discovery endpoint to get the data
HttpClient client = httpClientFactory.CreateClient(Constants.HttpClientDefault);
using (HttpResponseMessage response = await client.GetAsync(wopiOptions.DiscoveryUrl))
{
if (response.IsSuccessStatusCode)
{
var actions = new List <WopiAction>();
// Read the xml string from the response
var xmlString = await response.Content.ReadAsStringAsync();
// Parse the xml string into Xml
var discoXml = XDocument.Parse(xmlString);
// Convert the discovery xml into list of WopiApp
var xapps = discoXml.Descendants("app");
foreach (var xapp in xapps)
{
// Parse the actions for the app
var xactions = xapp.Descendants("action");
foreach (var xaction in xactions)
{
actions.Add(new WopiAction()
{
app = xapp.Attribute(nameof(WopiAction.name)).Value,
favIconUrl = xapp.Attribute(nameof(WopiAction.favIconUrl)).Value,
checkLicense = Convert.ToBoolean(xapp.Attribute(nameof(WopiAction.checkLicense)).Value),
name = xaction.Attribute(nameof(WopiAction.name)).Value,
ext = (xaction.Attribute(nameof(WopiAction.ext)) != null) ? xaction.Attribute(nameof(WopiAction.ext)).Value : string.Empty,
progid = (xaction.Attribute(nameof(WopiAction.progid)) != null) ? xaction.Attribute(nameof(WopiAction.progid)).Value : string.Empty,
@default = (xaction.Attribute(nameof(WopiAction.@default)) != null) ? true : false,
urlsrc = xaction.Attribute(nameof(WopiAction.urlsrc)).Value,
requires = (xaction.Attribute(nameof(WopiAction.requires)) != null) ? xaction.Attribute(nameof(WopiAction.requires)).Value : string.Empty
});
}
// Cache the discovey data for an hour
await memoryCache.GetOrCreateAsync(Constants.DiscoveryData, entry =>
{
entry.SlidingExpiration = TimeSpan.FromHours(1);
return(Task.FromResult(actions));
});
}
// Convert the discovery xml into list of WopiApp
var proof = discoXml.Descendants("proof-key").FirstOrDefault();
var wopiProof = new WopiProof()
{
value = proof.Attribute(nameof(WopiProof.value)).Value,
modulus = proof.Attribute(nameof(WopiProof.modulus)).Value,
exponent = proof.Attribute(nameof(WopiProof.exponent)).Value,
oldvalue = proof.Attribute(nameof(WopiProof.oldvalue)).Value,
oldmodulus = proof.Attribute(nameof(WopiProof.oldmodulus)).Value,
oldexponent = proof.Attribute(nameof(WopiProof.oldexponent)).Value
};
// Add to cache for 20min
await memoryCache.GetOrCreateAsync(Constants.WopiProof, entry =>
{
entry.SlidingExpiration = TimeSpan.FromMinutes(20);
return(Task.FromResult(wopiProof));
});
}
}
}
public async Task <HttpResponseMessage> ProcessPostActions(string file_id)
{
WopiRequest wopiRequest = new WopiRequest(this.Request, file_id);
WopiResponse wopiResponse = null;
try
{
if (await Authorize(wopiRequest))
{
if (await WopiProof.Validate(wopiRequest))
{
var filesPostOverride = WopiRequest.GetHttpRequestHeader(this.Request, WopiRequestHeaders.OVERRIDE);
switch (filesPostOverride)
{
case "LOCK":
var oldLock = WopiRequest.GetHttpRequestHeader(this.Request, WopiRequestHeaders.OLD_LOCK);
if (oldLock != null)
{
wopiResponse = await UnlockAndRelock(new UnlockAndRelockRequest(this.Request, file_id));
}
else
{
wopiResponse = await Lock(new LockRequest(this.Request, file_id));
}
break;
case "GET_LOCK":
wopiResponse = await GetLock(new GetLockRequest(this.Request, file_id));
break;
case "REFRESH_LOCK":
wopiResponse = await RefreshLock(new RefreshLockRequest(this.Request, file_id));
break;
case "UNLOCK":
wopiResponse = await Unlock(new UnlockRequest(this.Request, file_id));
break;
case "PUT_RELATIVE":
var suggestedTarget = WopiRequest.GetHttpRequestHeader(this.Request, WopiRequestHeaders.SUGGESTED_TARGET);
var relativeTarget = WopiRequest.GetHttpRequestHeader(this.Request, WopiRequestHeaders.RELATIVE_TARGET);
if (suggestedTarget != null && relativeTarget != null)
{
// This really should be BadRequest, but the spec requires NotImplmented
wopiResponse = new WopiResponse()
{
StatusCode = HttpStatusCode.NotImplemented
};
}
else
{
if (suggestedTarget != null)
{
wopiResponse = await PutRelativeFileSuggested(new PutRelativeFileSuggestedRequest(this.Request, file_id));
}
else if (relativeTarget != null)
{
wopiResponse = await PutRelativeFileSpecific(new PutRelativeFileSpecificRequest(this.Request, file_id));
}
else // Both are null
{
wopiResponse = new WopiResponse()
{
StatusCode = HttpStatusCode.BadRequest
}
};
}
break;
case "RENAME_FILE":
wopiResponse = await RenameFile(new RenameFileRequest(this.Request, file_id));
break;
case "PUT_USER_INFO":
wopiResponse = await PutUserInfo(new PutUserInfoRequest(this.Request, file_id));
break;
case "DELETE":
wopiResponse = await DeleteFile(new DeleteFileRequest(this.Request, file_id));
break;
default:
wopiResponse = wopiRequest.ResponseServerError(string.Format("Invalid {0} header value: {1}", WopiRequestHeaders.OVERRIDE, filesPostOverride));
break;
}
}
else
{
wopiResponse = wopiRequest.ResponseServerError("Proof validation failed");
}
}
else
{
wopiResponse = wopiRequest.ResponseUnauthorized();
}
}
catch (Exception ex)
{
wopiResponse = wopiRequest.ResponseServerError(ex.Message);
}
return(wopiResponse.ToHttpResponse());
}
public async static Task Refresh()
{
// Use the Wopi Discovery endpoint to get the data
HttpClient client = new HttpClient();
using (HttpResponseMessage response = await client.GetAsync(ConfigurationManager.AppSettings["WopiDiscovery"]))
{
if (response.IsSuccessStatusCode)
{
var memoryCache = MemoryCache.Default;
var actions = new List <WopiAction>();
// Read the xml string from the response
var xmlString = await response.Content.ReadAsStringAsync();
// Parse the xml string into Xml
var discoXml = XDocument.Parse(xmlString);
// Convert the discovery xml into list of WopiApp
var xapps = discoXml.Descendants("app");
foreach (var xapp in xapps)
{
// Parse the actions for the app
var xactions = xapp.Descendants("action");
foreach (var xaction in xactions)
{
actions.Add(new WopiAction()
{
app = xapp.Attribute("name").Value,
favIconUrl = xapp.Attribute("favIconUrl").Value,
checkLicense = Convert.ToBoolean(xapp.Attribute("checkLicense").Value),
name = xaction.Attribute("name").Value,
ext = (xaction.Attribute("ext") != null) ? xaction.Attribute("ext").Value : String.Empty,
progid = (xaction.Attribute("progid") != null) ? xaction.Attribute("progid").Value : String.Empty,
isDefault = (xaction.Attribute("default") != null) ? true : false,
urlsrc = xaction.Attribute("urlsrc").Value,
requires = (xaction.Attribute("requires") != null) ? xaction.Attribute("requires").Value : String.Empty
});
}
// Cache the discovey data for an hour
memoryCache.Add("DiscoData", actions, DateTimeOffset.Now.AddHours(1));
}
// Convert the discovery xml into list of WopiApp
var proof = discoXml.Descendants("proof-key").FirstOrDefault();
var wopiProof = new WopiProof()
{
value = proof.Attribute("value").Value,
modulus = proof.Attribute("modulus").Value,
exponent = proof.Attribute("exponent").Value,
oldvalue = proof.Attribute("oldvalue").Value,
oldmodulus = proof.Attribute("oldmodulus").Value,
oldexponent = proof.Attribute("oldexponent").Value
};
// Add to cache for 20min
memoryCache.Add("WopiProof", wopiProof, DateTimeOffset.Now.AddMinutes(20));
}
}
}
