/// <summary>
/// Saves the specified SharePointContext instance associated with the specified HTTP context.
/// <c>null</c> is accepted for clearing the SharePointContext instance associated with the HTTP context.
/// </summary>
/// <param name="spContext">The SharePointContext instance to be saved, or <c>null</c>.</param>
/// <param name="httpContext">The HTTP context.</param>
protected override void SaveSharePointContext(SharePointContext spContext, HttpContextBase httpContext)
{
if (spContext != null && httpContext != null)
{
SharePointAcsContext spAcsContext = spContext as SharePointAcsContext;
if (spAcsContext != null)
{
HttpCookie spCacheKeyCookie = new HttpCookie(SPCacheKeyKey)
{
Value = spAcsContext.CacheKey,
Secure = true,
HttpOnly = true
};
httpContext.Response.AppendCookie(spCacheKeyCookie);
}
httpContext.Session[SPContextKey] = spAcsContext;
}
}
/// <summary>
/// Validates if the given SharePointContext can be used with the specified HTTP context.
/// </summary>
/// <param name="spContext">The SharePointContext.</param>
/// <param name="httpContext">The HTTP context.</param>
/// <returns>
/// True if the given SharePointContext can be used with the specified HTTP context.
/// </returns>
protected override bool ValidateSharePointContext(SharePointContext spContext, HttpContextBase httpContext)
{
if (spContext != null && httpContext != null)
{
SharePointAcsContext spAcsContext = spContext as SharePointAcsContext;
if (spAcsContext != null)
{
Uri spHostUrl = SharePointContext.GetSPHostUrl(httpContext.Request);
string contextToken = TokenHelper.GetContextTokenFromRequest(httpContext.Request);
HttpCookie spCacheKeyCookie = httpContext.Request.Cookies[SPCacheKeyKey];
string spCacheKey = spCacheKeyCookie != null ? spCacheKeyCookie.Value : null;
return(spHostUrl == spAcsContext.SPHostUrl &&
!string.IsNullOrEmpty(spAcsContext.CacheKey) &&
spCacheKey == spAcsContext.CacheKey &&
!string.IsNullOrEmpty(spAcsContext.ContextToken) &&
(string.IsNullOrEmpty(contextToken) || contextToken == spAcsContext.ContextToken));
}
}
return(false);
}
