Exemplo n.º 1
0
        public void HasValidationPolicy_Should_Be_True(bool slidingExp, bool genLastModifiedFromFiles,
                                                       bool genEtagFromFiles, IEnumerable <KeyValuePair <HttpCacheValidateHandler, object> > callbackInfo)
        {
            var setting = new HttpCachePolicySettings()
            {
                SlidingExpiration             = slidingExp,
                GenerateLastModifiedFromFiles = genLastModifiedFromFiles,
                GenerateEtagFromFiles         = genEtagFromFiles,
                ValidationCallbackInfo        = callbackInfo
            };

            Assert.True(setting.HasValidationPolicy());
        }
        internal void OnEnter(object source, EventArgs eventArgs)
        {
            this._key = null;
            this._recordedCacheMiss = false;
            if (OutputCache.InUse)
            {
                string[]        strArray2   = null;
                string[]        strArray3   = null;
                HttpApplication application = (HttpApplication)source;
                HttpContext     context     = application.Context;
                context.GetFilePathData();
                HttpRequest  request  = context.Request;
                HttpResponse response = context.Response;
                switch (request.HttpVerb)
                {
                case HttpVerb.GET:
                case HttpVerb.HEAD:
                case HttpVerb.POST:
                {
                    string str;
                    this._key = str = this.CreateOutputCachedItemKey(context, null);
                    object obj2 = OutputCache.Get(str);
                    if (obj2 != null)
                    {
                        int        num;
                        int        length;
                        CachedVary cachedVary = obj2 as CachedVary;
                        if (cachedVary != null)
                        {
                            str = this.CreateOutputCachedItemKey(context, cachedVary);
                            if (str == null)
                            {
                                return;
                            }
                            if (cachedVary._contentEncodings == null)
                            {
                                obj2 = OutputCache.Get(str);
                            }
                            else
                            {
                                obj2 = null;
                                bool   flag3 = true;
                                string knownRequestHeader = context.WorkerRequest.GetKnownRequestHeader(0x16);
                                if (knownRequestHeader != null)
                                {
                                    string[] contentEncodings = cachedVary._contentEncodings;
                                    int      startIndex       = 0;
                                    bool     flag4            = false;
                                    while (!flag4)
                                    {
                                        flag4 = true;
                                        int index = GetAcceptableEncoding(contentEncodings, startIndex, knownRequestHeader);
                                        if (index > -1)
                                        {
                                            flag3 = false;
                                            obj2  = OutputCache.Get(str + contentEncodings[index]);
                                            if (obj2 == null)
                                            {
                                                startIndex = index + 1;
                                                if (startIndex < contentEncodings.Length)
                                                {
                                                    flag4 = false;
                                                }
                                            }
                                        }
                                        else if (index == -2)
                                        {
                                            flag3 = false;
                                        }
                                    }
                                }
                                if ((obj2 == null) && flag3)
                                {
                                    obj2 = OutputCache.Get(str);
                                }
                            }
                            if ((obj2 == null) || (((CachedRawResponse)obj2)._cachedVaryId != cachedVary.CachedVaryId))
                            {
                                if (obj2 != null)
                                {
                                    OutputCache.Remove(str, context);
                                }
                                return;
                            }
                        }
                        CachedRawResponse       response2 = (CachedRawResponse)obj2;
                        HttpCachePolicySettings settings  = response2._settings;
                        if ((cachedVary == null) && !settings.IgnoreParams)
                        {
                            if (request.HttpVerb == HttpVerb.POST)
                            {
                                this.RecordCacheMiss();
                                return;
                            }
                            if (request.HasQueryString)
                            {
                                this.RecordCacheMiss();
                                return;
                            }
                        }
                        if (settings.IgnoreRangeRequests)
                        {
                            string str8 = request.Headers["Range"];
                            if (StringUtil.StringStartsWithIgnoreCase(str8, "bytes"))
                            {
                                return;
                            }
                        }
                        if (!settings.HasValidationPolicy())
                        {
                            string str4 = request.Headers["Cache-Control"];
                            if (str4 != null)
                            {
                                strArray2 = str4.Split(s_fieldSeparators);
                                for (num = 0; num < strArray2.Length; num++)
                                {
                                    string str6 = strArray2[num];
                                    switch (str6)
                                    {
                                    case "no-cache":
                                    case "no-store":
                                        this.RecordCacheMiss();
                                        return;
                                    }
                                    if (StringUtil.StringStartsWith(str6, "max-age="))
                                    {
                                        int num4;
                                        try
                                        {
                                            num4 = Convert.ToInt32(str6.Substring(8), CultureInfo.InvariantCulture);
                                        }
                                        catch
                                        {
                                            num4 = -1;
                                        }
                                        if (num4 >= 0)
                                        {
                                            int num6 = (int)((context.UtcTimestamp.Ticks - settings.UtcTimestampCreated.Ticks) / 0x989680L);
                                            if (num6 >= num4)
                                            {
                                                this.RecordCacheMiss();
                                                return;
                                            }
                                        }
                                    }
                                    else if (StringUtil.StringStartsWith(str6, "min-fresh="))
                                    {
                                        int num5;
                                        try
                                        {
                                            num5 = Convert.ToInt32(str6.Substring(10), CultureInfo.InvariantCulture);
                                        }
                                        catch
                                        {
                                            num5 = -1;
                                        }
                                        if (((num5 >= 0) && settings.IsExpiresSet) && !settings.SlidingExpiration)
                                        {
                                            int num7 = (int)((settings.UtcExpires.Ticks - context.UtcTimestamp.Ticks) / 0x989680L);
                                            if (num7 < num5)
                                            {
                                                this.RecordCacheMiss();
                                                return;
                                            }
                                        }
                                    }
                                }
                            }
                            string str5 = request.Headers["Pragma"];
                            if (str5 != null)
                            {
                                strArray3 = str5.Split(s_fieldSeparators);
                                for (num = 0; num < strArray3.Length; num++)
                                {
                                    if (strArray3[num] == "no-cache")
                                    {
                                        this.RecordCacheMiss();
                                        return;
                                    }
                                }
                            }
                        }
                        else if (settings.ValidationCallbackInfo != null)
                        {
                            HttpValidationStatus valid             = HttpValidationStatus.Valid;
                            HttpValidationStatus ignoreThisRequest = valid;
                            num    = 0;
                            length = settings.ValidationCallbackInfo.Length;
                            while (num < length)
                            {
                                ValidationCallbackInfo info = settings.ValidationCallbackInfo[num];
                                try
                                {
                                    info.handler(context, info.data, ref valid);
                                }
                                catch (Exception exception)
                                {
                                    valid = HttpValidationStatus.Invalid;
                                    HttpApplicationFactory.RaiseError(exception);
                                }
                                switch (valid)
                                {
                                case HttpValidationStatus.Invalid:
                                    OutputCache.Remove(str, context);
                                    this.RecordCacheMiss();
                                    return;

                                case HttpValidationStatus.IgnoreThisRequest:
                                    ignoreThisRequest = HttpValidationStatus.IgnoreThisRequest;
                                    break;

                                case HttpValidationStatus.Valid:
                                    break;

                                default:
                                    valid = ignoreThisRequest;
                                    break;
                                }
                                num++;
                            }
                            if (ignoreThisRequest == HttpValidationStatus.IgnoreThisRequest)
                            {
                                this.RecordCacheMiss();
                                return;
                            }
                        }
                        HttpRawResponse rawResponse = response2._rawResponse;
                        if ((cachedVary == null) || (cachedVary._contentEncodings == null))
                        {
                            string    acceptEncoding  = request.Headers["Accept-Encoding"];
                            string    contentEncoding = null;
                            ArrayList headers         = rawResponse.Headers;
                            if (headers != null)
                            {
                                foreach (HttpResponseHeader header in headers)
                                {
                                    if (header.Name == "Content-Encoding")
                                    {
                                        contentEncoding = header.Value;
                                        break;
                                    }
                                }
                            }
                            if (!IsAcceptableEncoding(contentEncoding, acceptEncoding))
                            {
                                this.RecordCacheMiss();
                                return;
                            }
                        }
                        int num3 = -1;
                        if (!rawResponse.HasSubstBlocks)
                        {
                            string ifModifiedSince = request.IfModifiedSince;
                            if (ifModifiedSince != null)
                            {
                                num3 = 0;
                                try
                                {
                                    DateTime time = HttpDate.UtcParse(ifModifiedSince);
                                    if ((settings.IsLastModifiedSet && (settings.UtcLastModified <= time)) && (time <= context.UtcTimestamp))
                                    {
                                        num3 = 1;
                                    }
                                }
                                catch
                                {
                                }
                            }
                            if (num3 != 0)
                            {
                                string ifNoneMatch = request.IfNoneMatch;
                                if (ifNoneMatch != null)
                                {
                                    num3 = 0;
                                    string[] strArray = ifNoneMatch.Split(s_fieldSeparators);
                                    num    = 0;
                                    length = strArray.Length;
                                    while (num < length)
                                    {
                                        if ((num == 0) && strArray[num].Equals("*"))
                                        {
                                            num3 = 1;
                                            break;
                                        }
                                        if (strArray[num].Equals(settings.ETag))
                                        {
                                            num3 = 1;
                                            break;
                                        }
                                        num++;
                                    }
                                }
                            }
                        }
                        if (num3 == 1)
                        {
                            response.ClearAll();
                            response.StatusCode = 0x130;
                        }
                        else
                        {
                            bool sendBody = request.HttpVerb != HttpVerb.HEAD;
                            response.UseSnapshot(rawResponse, sendBody);
                        }
                        response.Cache.ResetFromHttpCachePolicySettings(settings, context.UtcTimestamp);
                        string originalCacheUrl = response2._kernelCacheUrl;
                        if (originalCacheUrl != null)
                        {
                            response.SetupKernelCaching(originalCacheUrl);
                        }
                        PerfCounters.IncrementCounter(AppPerfCounter.OUTPUT_CACHE_RATIO_BASE);
                        PerfCounters.IncrementCounter(AppPerfCounter.OUTPUT_CACHE_HITS);
                        this._key = null;
                        this._recordedCacheMiss = false;
                        application.CompleteRequest();
                        return;
                    }
                    return;
                }
                }
            }
        }