public static async Task <IActionResult> DfmServeStaticsFunction(
[HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = StaticsRoute)] HttpRequest req,
string p1,
string p2,
string p3,
ExecutionContext context,
ILogger log
)
{
return(await req.HandleErrors(log, async() => {
// Checking nonce, if it was set as an env variable.
// Don't care about return value of this method here.
Auth.IsNonceSetAndValid(req.Headers);
// Two bugs away. Making sure none of these segments ever contain any path separators and/or relative paths
string path = Path.Join(Path.GetFileName(p1), Path.GetFileName(p2), Path.GetFileName(p3));
string root = Path.Join(context.FunctionAppDirectory, "DfmStatics");
var contentType = FileMap.FirstOrDefault((kv => path.StartsWith(kv[0])));
if (contentType != null)
{
string fullPath = Path.Join(root, path);
if (!File.Exists(fullPath))
{
return new NotFoundResult();
}
return new FileStreamResult(File.OpenRead(fullPath), contentType[1])
{
LastModified = File.GetLastWriteTimeUtc(fullPath)
};
}
// Adding anti-forgery token
using (var generator = RandomNumberGenerator.Create())
{
var bytes = new byte[64];
generator.GetBytes(bytes);
string token = Convert.ToBase64String(bytes);
req.HttpContext.Response.Cookies
.Append(Globals.XsrfTokenCookieAndHeaderName, token, new CookieOptions {
HttpOnly = false
});
}
// Returning index.html by default, to support client routing
return await ReturnIndexHtml(context, log, root, p1);
}));
}
public static IActionResult Run(
[HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = "ui/{p1?}/{p2?}/{p3?}")] HttpRequest req,
ExecutionContext context
)
{
string root = context.FunctionAppDirectory;
string path = req.Path.Value;
var contentType = FileMap.FirstOrDefault((kv => path.StartsWith(kv[0])));
if (contentType != null)
{
return(File.Exists(root + path) ?
(IActionResult) new FileStreamResult(File.OpenRead(root + path), contentType[1]) :
new NotFoundResult());
}
// Returning index.html by default, to support client routing
return(new FileStreamResult(File.OpenRead($"{root}/api/ui/index.html"), "text/html; charset=UTF-8"));
}
public static async Task <IActionResult> DfmServeStaticsFunction(
[HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = StaticsRoute)] HttpRequest req,
ExecutionContext context,
ILogger log
)
{
string root = context.FunctionAppDirectory + "/DfmStatics";
string path = req.Path.Value;
string routePrefix = GetRoutePrefixFromHostJson(context, log);
string dfmRoutePrefix = GetDfmRoutePrefixFromFunctionJson(context, log);
if (!string.IsNullOrEmpty(dfmRoutePrefix))
{
routePrefix = string.IsNullOrEmpty(routePrefix) ? dfmRoutePrefix : routePrefix + "/" + dfmRoutePrefix;
}
// Applying routePrefix, if it is set to something other than empty string
if (!string.IsNullOrEmpty(routePrefix) && path.StartsWith("/" + routePrefix))
{
path = path.Substring(routePrefix.Length + 1);
}
var contentType = FileMap.FirstOrDefault((kv => path.StartsWith(kv[0])));
if (contentType != null)
{
return(File.Exists(root + path) ?
(IActionResult) new FileStreamResult(File.OpenRead(root + path), contentType[1]) :
new NotFoundResult());
}
// Returning index.html by default, to support client routing
string html = await File.ReadAllTextAsync($"{root}/index.html");
// Replacing our custom meta tag with customized code from Storage or with default Content Security Policy
string customMetaTagCode = (await CustomTemplates.GetCustomMetaTagCodeAsync()) ?? DefaultContentSecurityPolicyMeta;
html = html.Replace(Globals.CustomMetaTag, customMetaTagCode);
// Applying routePrefix, if it is set to something other than empty string
if (!string.IsNullOrEmpty(routePrefix))
{
html = html.Replace("<script>var DfmRoutePrefix=\"\"</script>", $"<script>var DfmRoutePrefix=\"{routePrefix}\"</script>");
html = html.Replace("href=\"/", $"href=\"/{routePrefix}/");
html = html.Replace("src=\"/", $"src=\"/{routePrefix}/");
}
// Applying client config, if any
string clientConfigString = Environment.GetEnvironmentVariable(EnvVariableNames.DFM_CLIENT_CONFIG);
if (!string.IsNullOrEmpty(clientConfigString))
{
dynamic clientConfig = JObject.Parse(clientConfigString);
html = html.Replace("<script>var DfmClientConfig={}</script>", "<script>var DfmClientConfig=" + clientConfig.ToString() + "</script>");
}
return(new ContentResult()
{
Content = html,
ContentType = "text/html; charset=UTF-8"
});
}
protected string GetFilePath(string fileName)
{
return(FileMap.FirstOrDefault(f => f.Value == fileName).Key);
}
