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git.ipfire.org Git - thirdparty/squid.git/blob - src/HttpHdrCc.h
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5 * SQUID Web Proxy Cache http://www.squid-cache.org/
6 * ----------------------------------------------------------
8 * Squid is the result of efforts by numerous individuals from
9 * the Internet community; see the CONTRIBUTORS file for full
10 * details. Many organizations have provided support for Squid's
11 * development; see the SPONSORS file for full details. Squid is
12 * Copyrighted (C) 2001 by the Regents of the University of
13 * California; see the COPYRIGHT file for full details. Squid
14 * incorporates software developed and/or copyrighted by other
15 * sources; see the CREDITS file for full details.
17 * This program is free software; you can redistribute it and/or modify
18 * it under the terms of the GNU General Public License as published by
19 * the Free Software Foundation; either version 2 of the License, or
20 * (at your option) any later version.
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
32 #ifndef SQUID_HTTPHDRCC_H
33 #define SQUID_HTTPHDRCC_H
37 #include "SquidString.h"
41 /** Http Cache-Control header representation
43 * Store and parse the Cache-Control HTTP header.
49 static const int32_t MAX_AGE_UNKNOWN
=-1; //max-age is unset
50 static const int32_t S_MAXAGE_UNKNOWN
=-1; //s-maxage is unset
51 static const int32_t MAX_STALE_UNKNOWN
=-1; //max-stale is unset
52 ///used to mark a valueless Cache-Control: max-stale directive, which instructs
53 /// us to treat responses of any age as fresh
54 static const int32_t MAX_STALE_ANY
=0x7fffffff;
55 static const int32_t STALE_IF_ERROR_UNKNOWN
=-1; //stale_if_error is unset
56 static const int32_t MIN_FRESH_UNKNOWN
=-1; //min_fresh is unset
59 mask(0), max_age(MAX_AGE_UNKNOWN
), s_maxage(S_MAXAGE_UNKNOWN
),
60 max_stale(MAX_STALE_UNKNOWN
), stale_if_error(STALE_IF_ERROR_UNKNOWN
),
61 min_fresh(MIN_FRESH_UNKNOWN
) {}
63 /// reset data-members to default state
66 /// parse a header-string and fill in appropriate values.
67 bool parse(const String
& s
);
69 //manipulation for Cache-Control: public header
70 bool hasPublic() const {return isSet(CC_PUBLIC
);}
71 bool Public() const {return isSet(CC_PUBLIC
);}
72 void Public(bool v
) {setMask(CC_PUBLIC
,v
);}
73 void clearPublic() {setMask(CC_PUBLIC
,false);}
75 //manipulation for Cache-Control: private header
76 bool hasPrivate() const {return isSet(CC_PRIVATE
);}
77 bool Private() const {return isSet(CC_PRIVATE
);}
78 void Private(bool v
) {setMask(CC_PRIVATE
,v
);}
79 void clearPrivate() {setMask(CC_PRIVATE
,false);}
81 //manipulation for Cache-Control: no-cache header
82 bool hasNoCache() const {return isSet(CC_NO_CACHE
);}
83 bool noCache() const {return isSet(CC_NO_CACHE
);}
84 void noCache(bool v
) {setMask(CC_NO_CACHE
,v
);}
85 void clearNoCache() {setMask(CC_NO_CACHE
,false);}
87 //manipulation for Cache-Control: no-store header
88 bool hasNoStore() const {return isSet(CC_NO_STORE
);}
89 bool noStore() const {return isSet(CC_NO_STORE
);}
90 void noStore(bool v
) {setMask(CC_NO_STORE
,v
);}
91 void clearNoStore() {setMask(CC_NO_STORE
,false);}
93 //manipulation for Cache-Control: no-transform header
94 bool hasNoTransform() const {return isSet(CC_NO_TRANSFORM
);}
95 bool noTransform() const {return isSet(CC_NO_TRANSFORM
);}
96 void noTransform(bool v
) {setMask(CC_NO_TRANSFORM
,v
);}
97 void clearNoTransform() {setMask(CC_NO_TRANSFORM
,false);}
99 //manipulation for Cache-Control: must-revalidate header
100 bool hasMustRevalidate() const {return isSet(CC_MUST_REVALIDATE
);}
101 bool mustRevalidate() const {return isSet(CC_MUST_REVALIDATE
);}
102 void mustRevalidate(bool v
) {setMask(CC_MUST_REVALIDATE
,v
);}
103 void clearMustRevalidate() {setMask(CC_MUST_REVALIDATE
,false);}
105 //manipulation for Cache-Control: proxy-revalidate header
106 bool hasProxyRevalidate() const {return isSet(CC_PROXY_REVALIDATE
);}
107 bool proxyRevalidate() const {return isSet(CC_PROXY_REVALIDATE
);}
108 void proxyRevalidate(bool v
) {setMask(CC_PROXY_REVALIDATE
,v
);}
109 void clearProxyRevalidate() {setMask(CC_PROXY_REVALIDATE
,false);}
111 //manipulation for Cache-Control: max-age header
112 bool hasMaxAge() const {return isSet(CC_MAX_AGE
);}
113 int32_t maxAge() const { return max_age
;}
114 void maxAge(int32_t v
) {setValue(max_age
,v
,CC_MAX_AGE
); }
115 void clearMaxAge() {setValue(max_age
,MAX_AGE_UNKNOWN
,CC_MAX_AGE
,false);}
117 //manipulation for Cache-Control: s-maxage header
118 bool hasSMaxAge() const {return isSet(CC_S_MAXAGE
);}
119 int32_t sMaxAge() const { return s_maxage
;}
120 void sMaxAge(int32_t v
) {setValue(s_maxage
,v
,CC_S_MAXAGE
); }
121 void clearSMaxAge() {setValue(s_maxage
,MAX_AGE_UNKNOWN
,CC_S_MAXAGE
,false);}
123 //manipulation for Cache-Control: max-stale header
124 bool hasMaxStale() const {return isSet(CC_MAX_STALE
);}
125 int32_t maxStale() const { return max_stale
;}
126 // max-stale has a special value (MAX_STALE_ANY) which correspond to having
127 // the directive without a numeric specification, and directs to consider the object
128 // as always-expired.
129 void maxStale(int32_t v
) {setValue(max_stale
,v
,CC_MAX_STALE
);}
130 void clearMaxStale() {setValue(max_stale
,MAX_STALE_UNKNOWN
,CC_MAX_STALE
,false);}
132 //manipulation for Cache-Control:min-fresh header
133 bool hasMinFresh() const {return isSet(CC_MIN_FRESH
);}
134 int32_t minFresh() const { return min_fresh
;}
135 void minFresh(int32_t v
) {if (v
< 0) return; setValue(min_fresh
,v
,CC_MIN_FRESH
); }
136 void clearMinFresh() {setValue(min_fresh
,MIN_FRESH_UNKNOWN
,CC_MIN_FRESH
,false);}
138 //manipulation for Cache-Control: only-if-cached header
139 bool hasOnlyIfCached() const {return isSet(CC_ONLY_IF_CACHED
);}
140 bool onlyIfCached() const {return isSet(CC_ONLY_IF_CACHED
);}
141 void onlyIfCached(bool v
) {setMask(CC_ONLY_IF_CACHED
,v
);}
142 void clearOnlyIfCached() {setMask(CC_ONLY_IF_CACHED
,false);}
144 //manipulation for Cache-Control: stale-if-error header
145 bool hasStaleIfError() const {return isSet(CC_STALE_IF_ERROR
);}
146 int32_t staleIfError() const { return stale_if_error
;}
147 void staleIfError(int32_t v
) {setValue(stale_if_error
,v
,CC_STALE_IF_ERROR
); }
148 void clearStaleIfError() {setValue(stale_if_error
,STALE_IF_ERROR_UNKNOWN
,CC_STALE_IF_ERROR
,false);}
150 /// check whether the attribute value supplied by id is set
151 _SQUID_INLINE_
bool isSet(http_hdr_cc_type id
) const;
153 void packInto(Packer
* p
) const;
155 MEMPROXY_CLASS(HttpHdrCc
);
157 /** bit-mask representing what header values are set among those
158 * recognized by squid.
160 * managed via EBIT_SET/TEST/CLR
167 int32_t stale_if_error
;
169 /// low-level part of the public set method, performs no checks
170 _SQUID_INLINE_
void setMask(http_hdr_cc_type id
, bool newval
=true);
171 _SQUID_INLINE_
void setValue(int32_t &value
, int32_t new_value
, http_hdr_cc_type hdr
, bool setting
=true);
174 /**comma-separated representation of the header values which were
175 * received but are not recognized.
180 MEMPROXY_CLASS_INLINE(HttpHdrCc
);
185 void httpHdrCcInitModule(void);
186 void httpHdrCcCleanModule(void);
187 void httpHdrCcUpdateStats(const HttpHdrCc
* cc
, StatHist
* hist
);
188 void httpHdrCcStatDumper(StoreEntry
* sentry
, int idx
, double val
, double size
, int count
);
191 #include "HttpHdrCc.cci"
194 #endif /* SQUID_HTTPHDRCC_H */