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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "media/blink/cache_util.h" | 5 #include "media/blink/cache_util.h" |
| 6 | 6 |
| 7 #include <string> | 7 #include <string> |
| 8 | 8 |
| 9 #include "base/strings/string_number_conversions.h" | 9 #include "base/strings/string_number_conversions.h" |
| 10 #include "base/strings/string_util.h" | 10 #include "base/strings/string_util.h" |
| 11 #include "base/time/time.h" | 11 #include "base/time/time.h" |
| 12 #include "net/http/http_util.h" | 12 #include "net/http/http_util.h" |
| 13 #include "net/http/http_version.h" | 13 #include "net/http/http_version.h" |
| 14 #include "third_party/WebKit/public/platform/WebCString.h" | 14 #include "third_party/WebKit/public/platform/WebCString.h" |
| 15 #include "third_party/WebKit/public/platform/WebString.h" | 15 #include "third_party/WebKit/public/platform/WebString.h" |
| 16 #include "third_party/WebKit/public/platform/WebURLResponse.h" | 16 #include "third_party/WebKit/public/platform/WebURLResponse.h" |
| 17 | 17 |
| 18 using base::Time; | 18 using base::Time; |
| 19 using base::TimeDelta; | 19 using base::TimeDelta; |
| 20 using net::HttpVersion; | 20 using net::HttpVersion; |
| 21 using blink::WebURLResponse; | 21 using blink::WebURLResponse; |
| 22 | 22 |
| 23 namespace media { | 23 namespace media { |
| 24 | 24 |
| 25 enum { kHttpOK = 200, kHttpPartialContent = 206 }; | 25 enum { kHttpOK = 200, kHttpPartialContent = 206 }; |
| 26 | 26 |
| 27 uint32 GetReasonsForUncacheability(const WebURLResponse& response) { | 27 uint32_t GetReasonsForUncacheability(const WebURLResponse& response) { |
| 28 uint32 reasons = 0; | 28 uint32_t reasons = 0; |
| 29 const int code = response.httpStatusCode(); | 29 const int code = response.httpStatusCode(); |
| 30 const int version = response.httpVersion(); | 30 const int version = response.httpVersion(); |
| 31 const HttpVersion http_version = | 31 const HttpVersion http_version = |
| 32 version == WebURLResponse::HTTPVersion_2_0 | 32 version == WebURLResponse::HTTPVersion_2_0 |
| 33 ? HttpVersion(2, 0) | 33 ? HttpVersion(2, 0) |
| 34 : version == WebURLResponse::HTTPVersion_1_1 | 34 : version == WebURLResponse::HTTPVersion_1_1 |
| 35 ? HttpVersion(1, 1) | 35 ? HttpVersion(1, 1) |
| 36 : version == WebURLResponse::HTTPVersion_1_0 | 36 : version == WebURLResponse::HTTPVersion_1_0 |
| 37 ? HttpVersion(1, 0) | 37 ? HttpVersion(1, 0) |
| 38 : version == WebURLResponse::HTTPVersion_0_9 | 38 : version == WebURLResponse::HTTPVersion_0_9 |
| (...skipping 20 matching lines...) Expand all Loading... |
| 59 reasons |= kNoStore; | 59 reasons |= kNoStore; |
| 60 if (cache_control_header.find("must-revalidate") != std::string::npos) | 60 if (cache_control_header.find("must-revalidate") != std::string::npos) |
| 61 reasons |= kHasMustRevalidate; | 61 reasons |= kHasMustRevalidate; |
| 62 | 62 |
| 63 const TimeDelta kMinimumAgeForUsefulness = | 63 const TimeDelta kMinimumAgeForUsefulness = |
| 64 TimeDelta::FromSeconds(3600); // Arbitrary value. | 64 TimeDelta::FromSeconds(3600); // Arbitrary value. |
| 65 | 65 |
| 66 const char kMaxAgePrefix[] = "max-age="; | 66 const char kMaxAgePrefix[] = "max-age="; |
| 67 const size_t kMaxAgePrefixLen = arraysize(kMaxAgePrefix) - 1; | 67 const size_t kMaxAgePrefixLen = arraysize(kMaxAgePrefix) - 1; |
| 68 if (cache_control_header.substr(0, kMaxAgePrefixLen) == kMaxAgePrefix) { | 68 if (cache_control_header.substr(0, kMaxAgePrefixLen) == kMaxAgePrefix) { |
| 69 int64 max_age_seconds; | 69 int64_t max_age_seconds; |
| 70 base::StringToInt64( | 70 base::StringToInt64( |
| 71 base::StringPiece(cache_control_header.begin() + kMaxAgePrefixLen, | 71 base::StringPiece(cache_control_header.begin() + kMaxAgePrefixLen, |
| 72 cache_control_header.end()), | 72 cache_control_header.end()), |
| 73 &max_age_seconds); | 73 &max_age_seconds); |
| 74 if (TimeDelta::FromSeconds(max_age_seconds) < kMinimumAgeForUsefulness) | 74 if (TimeDelta::FromSeconds(max_age_seconds) < kMinimumAgeForUsefulness) |
| 75 reasons |= kShortMaxAge; | 75 reasons |= kShortMaxAge; |
| 76 } | 76 } |
| 77 | 77 |
| 78 Time date; | 78 Time date; |
| 79 Time expires; | 79 Time expires; |
| (...skipping 15 matching lines...) Expand all Loading... |
| 95 return base::TimeDelta(); | 95 return base::TimeDelta(); |
| 96 if (cache_control_header.find("must-revalidate") != std::string::npos) | 96 if (cache_control_header.find("must-revalidate") != std::string::npos) |
| 97 return base::TimeDelta(); | 97 return base::TimeDelta(); |
| 98 | 98 |
| 99 // Max cache timeout ~= 1 month. | 99 // Max cache timeout ~= 1 month. |
| 100 base::TimeDelta ret = base::TimeDelta::FromDays(30); | 100 base::TimeDelta ret = base::TimeDelta::FromDays(30); |
| 101 | 101 |
| 102 const char kMaxAgePrefix[] = "max-age="; | 102 const char kMaxAgePrefix[] = "max-age="; |
| 103 const size_t kMaxAgePrefixLen = arraysize(kMaxAgePrefix) - 1; | 103 const size_t kMaxAgePrefixLen = arraysize(kMaxAgePrefix) - 1; |
| 104 if (cache_control_header.substr(0, kMaxAgePrefixLen) == kMaxAgePrefix) { | 104 if (cache_control_header.substr(0, kMaxAgePrefixLen) == kMaxAgePrefix) { |
| 105 int64 max_age_seconds; | 105 int64_t max_age_seconds; |
| 106 base::StringToInt64( | 106 base::StringToInt64( |
| 107 base::StringPiece(cache_control_header.begin() + kMaxAgePrefixLen, | 107 base::StringPiece(cache_control_header.begin() + kMaxAgePrefixLen, |
| 108 cache_control_header.end()), | 108 cache_control_header.end()), |
| 109 &max_age_seconds); | 109 &max_age_seconds); |
| 110 | 110 |
| 111 ret = std::min(ret, TimeDelta::FromSeconds(max_age_seconds)); | 111 ret = std::min(ret, TimeDelta::FromSeconds(max_age_seconds)); |
| 112 } else { | 112 } else { |
| 113 // Note that |date| may be smaller than |expires|, which means we'll | 113 // Note that |date| may be smaller than |expires|, which means we'll |
| 114 // return a timetick some time in the past. | 114 // return a timetick some time in the past. |
| 115 Time date; | 115 Time date; |
| 116 Time expires; | 116 Time expires; |
| 117 if (Time::FromString(response.httpHeaderField("Date").utf8().data(), | 117 if (Time::FromString(response.httpHeaderField("Date").utf8().data(), |
| 118 &date) && | 118 &date) && |
| 119 Time::FromString(response.httpHeaderField("Expires").utf8().data(), | 119 Time::FromString(response.httpHeaderField("Expires").utf8().data(), |
| 120 &expires) && | 120 &expires) && |
| 121 date > Time() && expires > Time()) { | 121 date > Time() && expires > Time()) { |
| 122 ret = std::min(ret, expires - date); | 122 ret = std::min(ret, expires - date); |
| 123 } | 123 } |
| 124 } | 124 } |
| 125 | 125 |
| 126 return ret; | 126 return ret; |
| 127 } | 127 } |
| 128 | 128 |
| 129 } // namespace media | 129 } // namespace media |
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