public static async Task <HttpResponseMessage> Callback(
[HttpTrigger(AuthorizationLevel.Anonymous, "get", "post", Route = "callback")] HttpRequestMessage req,
ExecutionContext executionContext,
ILogger logger)
{
try
{
var secrets = Secrets.Get(executionContext);
var storageAccount = CloudStorageAccount.Parse(Common.KnownEnvironmentVariables.AzureWebJobsStorage);
var marketplaceTable = storageAccount.CreateCloudTableClient().GetTableReference("marketplace");
var stateCookie = req.ReadCookie("state");
if (string.IsNullOrEmpty(stateCookie))
{
logger.LogError("state cookie is missing");
return(Winning(req));
}
var qs = req.RequestUri.ParseQueryString();
var stateQuery = qs.Get("state");
var code = qs.Get("code");
if (stateQuery != stateCookie)
{
logger.LogError("state mismatch: {StateCookie} !== {StateQuery}", stateCookie, stateQuery);
return(Winning(req));
}
if (string.IsNullOrEmpty(code))
{
logger.LogError("code is missing");
return(Winning(req));
}
var tokenResponse = await HttpClient.PostAsJsonAsync("https://github.com/login/oauth/access_token", new
{
client_id = secrets.ClientId,
client_secret = secrets.ClientSecret,
code,
redirect_uri = secrets.RedirectUri,
state = stateQuery
});
var tokenContent = await tokenResponse.Content.ReadAsFormDataAsync();
if (tokenContent.Get("error") != null)
{
logger.LogError("TokenResponse: " + await tokenResponse.Content.ReadAsStringAsync());
return(Winning(req));
}
var token = tokenContent.Get("access_token");
var mktplcRequest = new HttpRequestMessage(HttpMethod.Get, "https://api.github.com/user/marketplace_purchases?access_token=" + token);
mktplcRequest.Headers.Add("User-Agent", "IMGBOT");
var mktplcResponse = await HttpClient.SendAsync(mktplcRequest);
var planDataJson = await mktplcResponse.Content.ReadAsStringAsync();
var planData = JsonConvert.DeserializeObject <PlanData[]>(planDataJson);
foreach (var item in planData)
{
var marketplaceRow = new Marketplace(item.account.id, item.account.login)
{
AccountType = item.account.type,
PlanId = item.plan.id
};
await marketplaceTable.CreateIfNotExistsAsync();
await marketplaceTable.ExecuteAsync(TableOperation.InsertOrMerge(marketplaceRow));
}
return(Winning(req, token, stateQuery));
}
catch (Exception e)
{
logger.LogError(e, "Error processing auth");
}
return(Winning(req));
}
