private static async Task RequestReceived(HttpContext ctx)
{
string header = "[Komodo.Server] " + ctx.Request.Source.IpAddress + ":" + ctx.Request.Source.Port + " RequestReceived ";
DateTime startTime = DateTime.Now;
try
{
#region Base-Handlers
if (ctx.Request.Method == HttpMethod.OPTIONS)
{
await OptionsHandler(ctx);
return;
}
if (ctx.Request.Url.Elements == null || ctx.Request.Url.Elements.Length == 0)
{
ctx.Response.StatusCode = 200;
ctx.Response.ContentType = "text/html; charset=utf-8";
await ctx.Response.Send(RootHtml());
return;
}
if (ctx.Request.Url.Elements != null && ctx.Request.Url.Elements.Length > 0)
{
if (ctx.Request.Url.Elements.Length == 1)
{
if (String.Compare(ctx.Request.Url.Elements[0].ToLower(), "favicon.ico") == 0)
{
ctx.Response.StatusCode = 200;
await ctx.Response.Send(Common.ReadBinaryFile("Assets/favicon.ico"));
return;
}
if (String.Compare(ctx.Request.Url.Elements[0].ToLower(), "robots.txt") == 0)
{
ctx.Response.StatusCode = 200;
ctx.Response.ContentType = "text/plain";
await ctx.Response.Send("User-Agent: *\r\nDisallow:\r\n");
return;
}
if (String.Compare(ctx.Request.Url.Elements[0].ToLower(), "loopback") == 0)
{
ctx.Response.StatusCode = 200;
await ctx.Response.Send();
return;
}
if (String.Compare(ctx.Request.Url.Elements[0].ToLower(), "version") == 0)
{
ctx.Response.StatusCode = 200;
ctx.Response.ContentType = "text/plain";
await ctx.Response.Send(_Version);
return;
}
}
}
#endregion
#region Admin-API
string apiKey = ctx.Request.RetrieveHeaderValue(_Settings.Server.HeaderApiKey);
if (ctx.Request.Url.Elements != null &&
ctx.Request.Url.Elements.Length > 0 &&
ctx.Request.Url.Elements[0].Equals("admin"))
{
if (String.IsNullOrEmpty(apiKey))
{
_Logging.Warn(header + "admin API requested but no API key specified");
ctx.Response.StatusCode = 401;
ctx.Response.ContentType = "application/json";
await ctx.Response.Send(new ErrorResponse(401, "No API key specified.", null, null).ToJson(true));
return;
}
if (String.Compare(_Settings.Server.AdminApiKey, apiKey) != 0)
{
_Logging.Warn(header + "admin API requested with invalid API key");
ctx.Response.StatusCode = 401;
ctx.Response.ContentType = "application/json";
await ctx.Response.Send(new ErrorResponse(401, "Authentication failed.", null, null).ToJson(true));
return;
}
await AdminApiHandler(ctx);
return;
}
#endregion
#region Determine-Request-Type
PermissionType permType = PermissionType.Unknown;
if (ctx.Request.Url.Elements.Length == 1)
{
if (ctx.Request.Method == HttpMethod.GET && ctx.Request.Url.Elements[0].Equals("indices"))
{
// GET /indices, i.e. search
permType = PermissionType.Search;
}
else if (ctx.Request.Method == HttpMethod.GET)
{
// GET /[index], i.e. search
permType = PermissionType.Search;
}
else if (ctx.Request.Method == HttpMethod.PUT)
{
// PUT /[index], i.e. search
// PUT /[index]?enumerate, i.e. search
permType = PermissionType.Search;
}
else if (ctx.Request.Method == HttpMethod.POST)
{
if (ctx.Request.Url.Elements[0].Equals("_parse"))
{
// POST /_parse, i.e. parse document (without storing)
permType = PermissionType.CreateDocument;
}
else if (ctx.Request.Url.Elements[0].Equals("_postings"))
{
// POST /_postings, i.e. create postings (without storing)
permType = PermissionType.CreateDocument;
}
else if (ctx.Request.Url.Elements[0].Equals("indices"))
{
// POST /indices, i.e. create index
permType = PermissionType.CreateIndex;
}
else
{
// POST /[index], i.e. create document
permType = PermissionType.CreateDocument;
}
}
else if (ctx.Request.Method == HttpMethod.DELETE)
{
// DELETE /[index], i.e. delete index
permType = PermissionType.DeleteIndex;
}
}
else if (ctx.Request.Url.Elements.Length == 2)
{
if (ctx.Request.Method == HttpMethod.GET)
{
if (ctx.Request.Url.Elements[1].Equals("stats"))
{
// GET /[index]/stats, i.e. search
permType = PermissionType.Search;
}
else
{
// GET /[index]/[documentID], i.e. search
permType = PermissionType.Search;
}
}
else if (ctx.Request.Method == HttpMethod.POST)
{
// POST /[index]/[document], i.e. create document with specific GUID
permType = PermissionType.CreateDocument;
}
else if (ctx.Request.Method == HttpMethod.DELETE)
{
// DELETE /[index]/[document], i.e. delete document
permType = PermissionType.DeleteDocument;
}
}
if (permType == PermissionType.Unknown)
{
_Logging.Warn(header + "unable to verify request type");
ctx.Response.StatusCode = 400;
ctx.Response.ContentType = "application/json";
await ctx.Response.Send(new ErrorResponse(400, "Unable to discern request type.", null, null).ToJson(true));
return;
}
#endregion
#region Authenticate-Request-and-Build-Metadata
User user = null;
ApiKey key = null;
Permission perm = null;
if (!String.IsNullOrEmpty(apiKey))
{
if (!_Auth.AuthenticateAndAuthorize(apiKey, permType, out user, out key, out perm))
{
_Logging.Warn(header + "unable to authenticate and authorize request");
ctx.Response.StatusCode = 401;
ctx.Response.ContentType = "application/json";
await ctx.Response.Send(new ErrorResponse(401, "Unable to authenticate or authorize request.", null, null).ToJson(true));
return;
}
}
else
{
_Logging.Warn(header + "authenticated API requested but no authentication material supplied");
ctx.Response.StatusCode = 401;
ctx.Response.ContentType = "application/json";
await ctx.Response.Send(new ErrorResponse(401, "No authentication material.", null, null).ToJson(true));
return;
}
RequestMetadata md = new RequestMetadata(ctx, user, key, perm);
if (!String.IsNullOrEmpty(md.Params.Type))
{
List <string> matchVals = new List <string> {
"json", "xml", "html", "sql", "text", "unknown"
};
if (!matchVals.Contains(md.Params.Type))
{
_Logging.Warn(header + "invalid 'type' value found in querystring: " + md.Params.Type);
ctx.Response.StatusCode = 400;
ctx.Response.ContentType = "application/json";
await ctx.Response.Send(new ErrorResponse(400, "Invalid 'type' in querystring, use [json/xml/html/sql/text].", null, null).ToJson(true));
return;
}
}
#endregion
#region Call-User-API
await UserApiHandler(md);
return;
#endregion
}
catch (Exception e)
{
_Logging.Alert(header + "exception encountered" + Environment.NewLine + Common.SerializeJson(e, true));
ctx.Response.StatusCode = 500;
ctx.Response.ContentType = "application/json";
await ctx.Response.Send(new ErrorResponse(500, "Outer exception.", e, null).ToJson(true));
return;
}
finally
{
_Logging.Debug(header + ctx.Request.Method + " " + ctx.Request.Url.RawWithoutQuery + " " + ctx.Response.StatusCode + " [" + Common.TotalMsFrom(startTime) + "ms]");
}
}
