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comparison: netwerk/protocol/http/nsHttp.h

netwerk/protocol/http/nsHttp.h

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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 /* vim:set ts=4 sw=4 sts=4 et cin: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6
7 #ifndef nsHttp_h__
8 #define nsHttp_h__
9
10 #include <stdint.h>
11 #include "prtime.h"
12 #include "nsString.h"
13 #include "nsError.h"
14
15 // http version codes
16 #define NS_HTTP_VERSION_UNKNOWN 0
17 #define NS_HTTP_VERSION_0_9 9
18 #define NS_HTTP_VERSION_1_0 10
19 #define NS_HTTP_VERSION_1_1 11
20 #define NS_HTTP_VERSION_2_0 20
21
22 namespace mozilla {
23
24 class Mutex;
25
26 namespace net {
27 enum {
28 SPDY_VERSION_2_REMOVED = 2,
29 SPDY_VERSION_3 = 3,
30 SPDY_VERSION_31 = 4,
31
32 // leave room for official versions. telem goes to 48
33 // 24 was a internal spdy/3.1
34 // 25 was spdy/4a2
35 // 26 was http/2-draft08 and http/2-draft07 (they were the same)
36 // 27 was also http/2-draft09
37 HTTP2_VERSION_DRAFT10 = 27
38 };
39
40 typedef uint8_t nsHttpVersion;
41
42 #define NS_HTTP2_DRAFT_VERSION HTTP2_VERSION_DRAFT10
43 #define NS_HTTP2_DRAFT_TOKEN "h2-10"
44
45 //-----------------------------------------------------------------------------
46 // http connection capabilities
47 //-----------------------------------------------------------------------------
48
49 #define NS_HTTP_ALLOW_KEEPALIVE (1<<0)
50 #define NS_HTTP_ALLOW_PIPELINING (1<<1)
51
52 // a transaction with this caps flag will continue to own the connection,
53 // preventing it from being reclaimed, even after the transaction completes.
54 #define NS_HTTP_STICKY_CONNECTION (1<<2)
55
56 // a transaction with this caps flag will, upon opening a new connection,
57 // bypass the local DNS cache
58 #define NS_HTTP_REFRESH_DNS (1<<3)
59
60 // a transaction with this caps flag will not pass SSL client-certificates
61 // to the server (see bug #466080), but is may also be used for other things
62 #define NS_HTTP_LOAD_ANONYMOUS (1<<4)
63
64 // a transaction with this caps flag keeps timing information
65 #define NS_HTTP_TIMING_ENABLED (1<<5)
66
67 // a transaction with this flag blocks the initiation of other transactons
68 // in the same load group until it is complete
69 #define NS_HTTP_LOAD_AS_BLOCKING (1<<6)
70
71 // Disallow the use of the SPDY protocol. This is meant for the contexts
72 // such as HTTP upgrade which are nonsensical for SPDY, it is not the
73 // SPDY configuration variable.
74 #define NS_HTTP_DISALLOW_SPDY (1<<7)
75
76 // a transaction with this flag loads without respect to whether the load
77 // group is currently blocking on some resources
78 #define NS_HTTP_LOAD_UNBLOCKED (1<<8)
79
80 // These flags allow a transaction to use TLS false start with
81 // weaker security profiles based on past history
82 #define NS_HTTP_ALLOW_RSA_FALSESTART (1<<9)
83
84 //-----------------------------------------------------------------------------
85 // some default values
86 //-----------------------------------------------------------------------------
87
88 #define NS_HTTP_DEFAULT_PORT 80
89 #define NS_HTTPS_DEFAULT_PORT 443
90
91 #define NS_HTTP_HEADER_SEPS ", \t"
92
93 //-----------------------------------------------------------------------------
94 // http atoms...
95 //-----------------------------------------------------------------------------
96
97 struct nsHttpAtom
98 {
99 operator const char *() const { return _val; }
100 const char *get() const { return _val; }
101
102 void operator=(const char *v) { _val = v; }
103 void operator=(const nsHttpAtom &a) { _val = a._val; }
104
105 // private
106 const char *_val;
107 };
108
109 struct nsHttp
110 {
111 static nsresult CreateAtomTable();
112 static void DestroyAtomTable();
113
114 // The mutex is valid any time the Atom Table is valid
115 // This mutex is used in the unusual case that the network thread and
116 // main thread might access the same data
117 static Mutex *GetLock();
118
119 // will dynamically add atoms to the table if they don't already exist
120 static nsHttpAtom ResolveAtom(const char *);
121 static nsHttpAtom ResolveAtom(const nsACString &s)
122 {
123 return ResolveAtom(PromiseFlatCString(s).get());
124 }
125
126 // returns true if the specified token [start,end) is valid per RFC 2616
127 // section 2.2
128 static bool IsValidToken(const char *start, const char *end);
129
130 static inline bool IsValidToken(const nsCString &s) {
131 const char *start = s.get();
132 return IsValidToken(start, start + s.Length());
133 }
134
135 // find the first instance (case-insensitive comparison) of the given
136 // |token| in the |input| string. the |token| is bounded by elements of
137 // |separators| and may appear at the beginning or end of the |input|
138 // string. null is returned if the |token| is not found. |input| may be
139 // null, in which case null is returned.
140 static const char *FindToken(const char *input, const char *token,
141 const char *separators);
142
143 // This function parses a string containing a decimal-valued, non-negative
144 // 64-bit integer. If the value would exceed INT64_MAX, then false is
145 // returned. Otherwise, this function returns true and stores the
146 // parsed value in |result|. The next unparsed character in |input| is
147 // optionally returned via |next| if |next| is non-null.
148 //
149 // TODO(darin): Replace this with something generic.
150 //
151 static bool ParseInt64(const char *input, const char **next,
152 int64_t *result);
153
154 // Variant on ParseInt64 that expects the input string to contain nothing
155 // more than the value being parsed.
156 static inline bool ParseInt64(const char *input, int64_t *result) {
157 const char *next;
158 return ParseInt64(input, &next, result) && *next == '\0';
159 }
160
161 // Return whether the HTTP status code represents a permanent redirect
162 static bool IsPermanentRedirect(uint32_t httpStatus);
163
164 // Declare all atoms
165 //
166 // The atom names and values are stored in nsHttpAtomList.h and are brought
167 // to you by the magic of C preprocessing. Add new atoms to nsHttpAtomList
168 // and all support logic will be auto-generated.
169 //
170 #define HTTP_ATOM(_name, _value) static nsHttpAtom _name;
171 #include "nsHttpAtomList.h"
172 #undef HTTP_ATOM
173 };
174
175 //-----------------------------------------------------------------------------
176 // utilities...
177 //-----------------------------------------------------------------------------
178
179 static inline uint32_t
180 PRTimeToSeconds(PRTime t_usec)
181 {
182 return uint32_t( t_usec / PR_USEC_PER_SEC );
183 }
184
185 #define NowInSeconds() PRTimeToSeconds(PR_Now())
186
187 // Round q-value to 2 decimal places; return 2 most significant digits as uint.
188 #define QVAL_TO_UINT(q) ((unsigned int) ((q + 0.005) * 100.0))
189
190 #define HTTP_LWS " \t"
191 #define HTTP_HEADER_VALUE_SEPS HTTP_LWS ","
192
193 } // namespace mozilla::net
194 } // namespace mozilla
195
196 #endif // nsHttp_h__

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