/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* vim:set ts=4 sw=4 sts=4 et cin: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef nsHttp_h__ #define nsHttp_h__ #include #include "prtime.h" #include "nsAutoPtr.h" #include "nsString.h" #include "nsError.h" #include "nsTArray.h" // http version codes #define NS_HTTP_VERSION_UNKNOWN 0 #define NS_HTTP_VERSION_0_9 9 #define NS_HTTP_VERSION_1_0 10 #define NS_HTTP_VERSION_1_1 11 #define NS_HTTP_VERSION_2_0 20 namespace mozilla { class Mutex; namespace net { enum { // SPDY_VERSION_2 = 2, REMOVED // SPDY_VERSION_3 = 3, REMOVED SPDY_VERSION_31 = 4, HTTP_VERSION_2 = 5, // leave room for official versions. telem goes to 48 // 24 was a internal spdy/3.1 // 25 was spdy/4a2 // 26 was http/2-draft08 and http/2-draft07 (they were the same) // 27 was http/2-draft09, h2-10, and h2-11 // 28 was http/2-draft12 // 29 was http/2-draft13 // 30 was also h2-14 and -15. They're effectively the same, -15 added an // error code. So, we advertise all, but our "default position" is -16. HTTP2_VERSION_DRAFT16 = 30 }; typedef uint8_t nsHttpVersion; #define NS_HTTP2_DRAFT_VERSION HTTP2_VERSION_DRAFT16 #define NS_HTTP2_DRAFT_TOKEN "h2-16" //----------------------------------------------------------------------------- // http connection capabilities //----------------------------------------------------------------------------- #define NS_HTTP_ALLOW_KEEPALIVE (1<<0) #define NS_HTTP_ALLOW_PIPELINING (1<<1) // a transaction with this caps flag will continue to own the connection, // preventing it from being reclaimed, even after the transaction completes. #define NS_HTTP_STICKY_CONNECTION (1<<2) // a transaction with this caps flag will, upon opening a new connection, // bypass the local DNS cache #define NS_HTTP_REFRESH_DNS (1<<3) // a transaction with this caps flag will not pass SSL client-certificates // to the server (see bug #466080), but is may also be used for other things #define NS_HTTP_LOAD_ANONYMOUS (1<<4) // a transaction with this caps flag keeps timing information #define NS_HTTP_TIMING_ENABLED (1<<5) // a transaction with this flag blocks the initiation of other transactons // in the same load group until it is complete #define NS_HTTP_LOAD_AS_BLOCKING (1<<6) // Disallow the use of the SPDY protocol. This is meant for the contexts // such as HTTP upgrade which are nonsensical for SPDY, it is not the // SPDY configuration variable. #define NS_HTTP_DISALLOW_SPDY (1<<7) // a transaction with this flag loads without respect to whether the load // group is currently blocking on some resources #define NS_HTTP_LOAD_UNBLOCKED (1<<8) // These flags allow a transaction to use TLS false start with // weaker security profiles based on past history #define NS_HTTP_ALLOW_RSA_FALSESTART (1<<9) // This flag indicates the transaction should accept associated pushes #define NS_HTTP_ONPUSH_LISTENER (1<<10) //----------------------------------------------------------------------------- // some default values //----------------------------------------------------------------------------- #define NS_HTTP_DEFAULT_PORT 80 #define NS_HTTPS_DEFAULT_PORT 443 #define NS_HTTP_HEADER_SEPS ", \t" //----------------------------------------------------------------------------- // http atoms... //----------------------------------------------------------------------------- struct nsHttpAtom { operator const char *() const { return _val; } const char *get() const { return _val; } void operator=(const char *v) { _val = v; } void operator=(const nsHttpAtom &a) { _val = a._val; } // private const char *_val; }; struct nsHttp { static nsresult CreateAtomTable(); static void DestroyAtomTable(); // The mutex is valid any time the Atom Table is valid // This mutex is used in the unusual case that the network thread and // main thread might access the same data static Mutex *GetLock(); // will dynamically add atoms to the table if they don't already exist static nsHttpAtom ResolveAtom(const char *); static nsHttpAtom ResolveAtom(const nsACString &s) { return ResolveAtom(PromiseFlatCString(s).get()); } // returns true if the specified token [start,end) is valid per RFC 2616 // section 2.2 static bool IsValidToken(const char *start, const char *end); static inline bool IsValidToken(const nsACString &s) { return IsValidToken(s.BeginReading(), s.EndReading()); } // Returns true if the specified value is reasonable given the defintion // in RFC 2616 section 4.2. Full strict validation is not performed // currently as it would require full parsing of the value. static bool IsReasonableHeaderValue(const nsACString &s); // find the first instance (case-insensitive comparison) of the given // |token| in the |input| string. the |token| is bounded by elements of // |separators| and may appear at the beginning or end of the |input| // string. null is returned if the |token| is not found. |input| may be // null, in which case null is returned. static const char *FindToken(const char *input, const char *token, const char *separators); // This function parses a string containing a decimal-valued, non-negative // 64-bit integer. If the value would exceed INT64_MAX, then false is // returned. Otherwise, this function returns true and stores the // parsed value in |result|. The next unparsed character in |input| is // optionally returned via |next| if |next| is non-null. // // TODO(darin): Replace this with something generic. // static bool ParseInt64(const char *input, const char **next, int64_t *result); // Variant on ParseInt64 that expects the input string to contain nothing // more than the value being parsed. static inline bool ParseInt64(const char *input, int64_t *result) { const char *next; return ParseInt64(input, &next, result) && *next == '\0'; } // Return whether the HTTP status code represents a permanent redirect static bool IsPermanentRedirect(uint32_t httpStatus); // Declare all atoms // // The atom names and values are stored in nsHttpAtomList.h and are brought // to you by the magic of C preprocessing. Add new atoms to nsHttpAtomList // and all support logic will be auto-generated. // #define HTTP_ATOM(_name, _value) static nsHttpAtom _name; #include "nsHttpAtomList.h" #undef HTTP_ATOM }; //----------------------------------------------------------------------------- // utilities... //----------------------------------------------------------------------------- static inline uint32_t PRTimeToSeconds(PRTime t_usec) { return uint32_t( t_usec / PR_USEC_PER_SEC ); } #define NowInSeconds() PRTimeToSeconds(PR_Now()) // Round q-value to 2 decimal places; return 2 most significant digits as uint. #define QVAL_TO_UINT(q) ((unsigned int) ((q + 0.005) * 100.0)) #define HTTP_LWS " \t" #define HTTP_HEADER_VALUE_SEPS HTTP_LWS "," void EnsureBuffer(nsAutoArrayPtr &buf, uint32_t newSize, uint32_t preserve, uint32_t &objSize); void EnsureBuffer(nsAutoArrayPtr &buf, uint32_t newSize, uint32_t preserve, uint32_t &objSize); // h2=":443"; ma=60; single // results in 3 mValues = {{h2, :443}, {ma, 60}, {single}} class ParsedHeaderPair { public: ParsedHeaderPair(const char *name, int32_t nameLen, const char *val, int32_t valLen) { if (nameLen > 0) { mName.Rebind(name, name + nameLen); } if (valLen > 0) { mValue.Rebind(val, val + valLen); } } ParsedHeaderPair(ParsedHeaderPair const ©) : mName(copy.mName) , mValue(copy.mValue) { } nsDependentCSubstring mName; nsDependentCSubstring mValue; }; class ParsedHeaderValueList { public: ParsedHeaderValueList(char *t, uint32_t len); nsTArray mValues; private: void ParsePair(char *t, uint32_t len); void Tokenize(char *input, uint32_t inputLen, char **token, uint32_t *tokenLen, bool *foundEquals, char **next); }; class ParsedHeaderValueListList { public: explicit ParsedHeaderValueListList(const nsCString &txt); nsTArray mValues; private: nsCString mFull; }; } // namespace mozilla::net } // namespace mozilla #endif // nsHttp_h__