/// <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 abstract bool ValidateSharePointContext(SharePointContext spContext, HttpContextBase httpContext);
/// <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 abstract void SaveSharePointContext(SharePointContext spContext, HttpContextBase httpContext);
protected override bool ValidateSharePointContext(SharePointContext spContext, HttpContextBase httpContext)
{
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;
}
protected override void SaveSharePointContext(SharePointContext spContext, HttpContextBase httpContext)
{
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;
}
protected override bool ValidateSharePointContext(SharePointContext spContext, HttpContextBase httpContext)
{
SharePointHighTrustContext spHighTrustContext = spContext as SharePointHighTrustContext;
if (spHighTrustContext != null)
{
Uri spHostUrl = SharePointContext.GetSPHostUrl(httpContext.Request);
WindowsIdentity logonUserIdentity = httpContext.Request.LogonUserIdentity;
return spHostUrl == spHighTrustContext.SPHostUrl &&
logonUserIdentity != null &&
logonUserIdentity.IsAuthenticated &&
!logonUserIdentity.IsGuest &&
logonUserIdentity.User == spHighTrustContext.LogonUserIdentity.User;
}
return false;
}
protected override void SaveSharePointContext(SharePointContext spContext, HttpContextBase httpContext)
{
httpContext.Session[SPContextKey] = spContext as SharePointHighTrustContext;
}