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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 |
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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; |
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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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