зеркало из https://github.com/mozilla/gecko-dev.git
872 строки
25 KiB
C++
872 строки
25 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim:set ts=4 sw=4 sts=4 et cin: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// HttpLog.h should generally be included first
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#include "HttpLog.h"
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#include "nsHttp.h"
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#include "CacheControlParser.h"
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#include "PLDHashTable.h"
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#include "mozilla/Mutex.h"
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#include "mozilla/HashFunctions.h"
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#include "nsCRT.h"
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#include "nsHttpRequestHead.h"
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#include "nsHttpResponseHead.h"
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#include "nsHttpHandler.h"
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#include "nsICacheEntry.h"
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#include "nsIRequest.h"
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#include <errno.h>
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#include <functional>
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namespace mozilla {
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namespace net {
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// define storage for all atoms
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namespace nsHttp {
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#define HTTP_ATOM(_name, _value) nsHttpAtom _name = { _value };
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#include "nsHttpAtomList.h"
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#undef HTTP_ATOM
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}
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// find out how many atoms we have
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#define HTTP_ATOM(_name, _value) Unused_ ## _name,
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enum {
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#include "nsHttpAtomList.h"
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NUM_HTTP_ATOMS
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};
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#undef HTTP_ATOM
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// we keep a linked list of atoms allocated on the heap for easy clean up when
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// the atom table is destroyed. The structure and value string are allocated
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// as one contiguous block.
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struct HttpHeapAtom {
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struct HttpHeapAtom *next;
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char value[1];
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};
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static PLDHashTable *sAtomTable;
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static struct HttpHeapAtom *sHeapAtoms = nullptr;
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static Mutex *sLock = nullptr;
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HttpHeapAtom *
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NewHeapAtom(const char *value) {
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int len = strlen(value);
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HttpHeapAtom *a =
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reinterpret_cast<HttpHeapAtom *>(malloc(sizeof(*a) + len));
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if (!a)
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return nullptr;
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memcpy(a->value, value, len + 1);
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// add this heap atom to the list of all heap atoms
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a->next = sHeapAtoms;
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sHeapAtoms = a;
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return a;
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}
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// Hash string ignore case, based on PL_HashString
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static PLDHashNumber
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StringHash(const void *key)
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{
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PLDHashNumber h = 0;
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for (const char *s = reinterpret_cast<const char*>(key); *s; ++s)
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h = AddToHash(h, nsCRT::ToLower(*s));
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return h;
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}
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static bool
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StringCompare(const PLDHashEntryHdr *entry, const void *testKey)
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{
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const void *entryKey =
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reinterpret_cast<const PLDHashEntryStub *>(entry)->key;
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return PL_strcasecmp(reinterpret_cast<const char *>(entryKey),
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reinterpret_cast<const char *>(testKey)) == 0;
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}
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static const PLDHashTableOps ops = {
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StringHash,
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StringCompare,
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PLDHashTable::MoveEntryStub,
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PLDHashTable::ClearEntryStub,
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nullptr
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};
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// We put the atoms in a hash table for speedy lookup.. see ResolveAtom.
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namespace nsHttp {
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nsresult
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CreateAtomTable()
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{
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MOZ_ASSERT(!sAtomTable, "atom table already initialized");
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if (!sLock) {
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sLock = new Mutex("nsHttp.sLock");
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}
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// The initial length for this table is a value greater than the number of
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// known atoms (NUM_HTTP_ATOMS) because we expect to encounter a few random
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// headers right off the bat.
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sAtomTable = new PLDHashTable(&ops, sizeof(PLDHashEntryStub),
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NUM_HTTP_ATOMS + 10);
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// fill the table with our known atoms
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const char *const atoms[] = {
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#define HTTP_ATOM(_name, _value) _name._val,
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#include "nsHttpAtomList.h"
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#undef HTTP_ATOM
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nullptr
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};
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for (int i = 0; atoms[i]; ++i) {
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auto stub = static_cast<PLDHashEntryStub*>
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(sAtomTable->Add(atoms[i], fallible));
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if (!stub)
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return NS_ERROR_OUT_OF_MEMORY;
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MOZ_ASSERT(!stub->key, "duplicate static atom");
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stub->key = atoms[i];
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}
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return NS_OK;
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}
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void
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DestroyAtomTable()
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{
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delete sAtomTable;
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sAtomTable = nullptr;
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while (sHeapAtoms) {
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HttpHeapAtom *next = sHeapAtoms->next;
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free(sHeapAtoms);
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sHeapAtoms = next;
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}
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delete sLock;
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sLock = nullptr;
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}
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Mutex *
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GetLock()
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{
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return sLock;
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}
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// this function may be called from multiple threads
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nsHttpAtom
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ResolveAtom(const char *str)
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{
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nsHttpAtom atom = { nullptr };
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if (!str || !sAtomTable)
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return atom;
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MutexAutoLock lock(*sLock);
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auto stub = static_cast<PLDHashEntryStub*>(sAtomTable->Add(str, fallible));
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if (!stub)
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return atom; // out of memory
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if (stub->key) {
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atom._val = reinterpret_cast<const char *>(stub->key);
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return atom;
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}
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// if the atom could not be found in the atom table, then we'll go
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// and allocate a new atom on the heap.
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HttpHeapAtom *heapAtom = NewHeapAtom(str);
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if (!heapAtom)
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return atom; // out of memory
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stub->key = atom._val = heapAtom->value;
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return atom;
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}
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//
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// From section 2.2 of RFC 2616, a token is defined as:
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//
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// token = 1*<any CHAR except CTLs or separators>
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// CHAR = <any US-ASCII character (octets 0 - 127)>
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// separators = "(" | ")" | "<" | ">" | "@"
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// | "," | ";" | ":" | "\" | <">
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// | "/" | "[" | "]" | "?" | "="
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// | "{" | "}" | SP | HT
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// CTL = <any US-ASCII control character
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// (octets 0 - 31) and DEL (127)>
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// SP = <US-ASCII SP, space (32)>
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// HT = <US-ASCII HT, horizontal-tab (9)>
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//
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static const char kValidTokenMap[128] = {
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0, 0, 0, 0, 0, 0, 0, 0, // 0
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0, 0, 0, 0, 0, 0, 0, 0, // 8
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0, 0, 0, 0, 0, 0, 0, 0, // 16
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0, 0, 0, 0, 0, 0, 0, 0, // 24
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0, 1, 0, 1, 1, 1, 1, 1, // 32
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0, 0, 1, 1, 0, 1, 1, 0, // 40
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1, 1, 1, 1, 1, 1, 1, 1, // 48
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1, 1, 0, 0, 0, 0, 0, 0, // 56
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0, 1, 1, 1, 1, 1, 1, 1, // 64
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1, 1, 1, 1, 1, 1, 1, 1, // 72
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1, 1, 1, 1, 1, 1, 1, 1, // 80
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1, 1, 1, 0, 0, 0, 1, 1, // 88
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1, 1, 1, 1, 1, 1, 1, 1, // 96
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1, 1, 1, 1, 1, 1, 1, 1, // 104
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1, 1, 1, 1, 1, 1, 1, 1, // 112
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1, 1, 1, 0, 1, 0, 1, 0 // 120
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};
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bool
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IsValidToken(const char *start, const char *end)
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{
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if (start == end)
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return false;
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for (; start != end; ++start) {
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const unsigned char idx = *start;
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if (idx > 127 || !kValidTokenMap[idx])
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return false;
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}
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return true;
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}
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const char*
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GetProtocolVersion(HttpVersion pv)
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{
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switch (pv) {
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case HttpVersion::v2_0:
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return "h2";
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case HttpVersion::v1_0:
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return "http/1.0";
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case HttpVersion::v1_1:
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return "http/1.1";
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default:
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NS_WARNING(nsPrintfCString("Unkown protocol version: 0x%X. "
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"Please file a bug", static_cast<uint32_t>(pv)).get());
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return "http/1.1";
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}
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}
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// static
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void
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TrimHTTPWhitespace(const nsACString& aSource, nsACString& aDest)
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{
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nsAutoCString str(aSource);
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// HTTP whitespace 0x09: '\t', 0x0A: '\n', 0x0D: '\r', 0x20: ' '
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static const char kHTTPWhitespace[] = "\t\n\r ";
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str.Trim(kHTTPWhitespace);
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aDest.Assign(str);
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}
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// static
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bool
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IsReasonableHeaderValue(const nsACString &s)
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{
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// Header values MUST NOT contain line-breaks. RFC 2616 technically
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// permits CTL characters, including CR and LF, in header values provided
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// they are quoted. However, this can lead to problems if servers do not
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// interpret quoted strings properly. Disallowing CR and LF here seems
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// reasonable and keeps things simple. We also disallow a null byte.
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const nsACString::char_type* end = s.EndReading();
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for (const nsACString::char_type* i = s.BeginReading(); i != end; ++i) {
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if (*i == '\r' || *i == '\n' || *i == '\0') {
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return false;
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}
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}
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return true;
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}
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const char *
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FindToken(const char *input, const char *token, const char *seps)
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{
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if (!input)
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return nullptr;
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int inputLen = strlen(input);
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int tokenLen = strlen(token);
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if (inputLen < tokenLen)
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return nullptr;
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const char *inputTop = input;
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const char *inputEnd = input + inputLen - tokenLen;
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for (; input <= inputEnd; ++input) {
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if (PL_strncasecmp(input, token, tokenLen) == 0) {
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if (input > inputTop && !strchr(seps, *(input - 1)))
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continue;
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if (input < inputEnd && !strchr(seps, *(input + tokenLen)))
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continue;
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return input;
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}
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}
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return nullptr;
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}
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bool
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ParseInt64(const char *input, const char **next, int64_t *r)
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{
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MOZ_ASSERT(input);
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MOZ_ASSERT(r);
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char *end = nullptr;
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errno = 0; // Clear errno to make sure its value is set by strtoll
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int64_t value = strtoll(input, &end, /* base */ 10);
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// Fail if: - the parsed number overflows.
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// - the end points to the start of the input string.
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// - we parsed a negative value. Consumers don't expect that.
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if (errno != 0 || end == input || value < 0) {
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LOG(("nsHttp::ParseInt64 value=%" PRId64 " errno=%d", value, errno));
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return false;
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}
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if (next) {
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*next = end;
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}
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*r = value;
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return true;
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}
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bool
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IsPermanentRedirect(uint32_t httpStatus)
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{
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return httpStatus == 301 || httpStatus == 308;
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}
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bool
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ValidationRequired(bool isForcedValid, nsHttpResponseHead *cachedResponseHead,
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uint32_t loadFlags, bool allowStaleCacheContent,
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bool isImmutable, bool customConditionalRequest,
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nsHttpRequestHead &requestHead,
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nsICacheEntry *entry, CacheControlParser &cacheControlRequest,
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bool fromPreviousSession)
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{
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// Check isForcedValid to see if it is possible to skip validation.
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// Don't skip validation if we have serious reason to believe that this
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// content is invalid (it's expired).
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// See netwerk/cache2/nsICacheEntry.idl for details
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if (isForcedValid &&
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(!cachedResponseHead->ExpiresInPast() ||
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!cachedResponseHead->MustValidateIfExpired())) {
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LOG(("NOT validating based on isForcedValid being true.\n"));
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return false;
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}
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// If the LOAD_FROM_CACHE flag is set, any cached data can simply be used
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if (loadFlags & nsIRequest::LOAD_FROM_CACHE || allowStaleCacheContent) {
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LOG(("NOT validating based on LOAD_FROM_CACHE load flag\n"));
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return false;
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}
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// If the VALIDATE_ALWAYS flag is set, any cached data won't be used until
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// it's revalidated with the server.
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if ((loadFlags & nsIRequest::VALIDATE_ALWAYS) && !isImmutable) {
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LOG(("Validating based on VALIDATE_ALWAYS load flag\n"));
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return true;
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}
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// Even if the VALIDATE_NEVER flag is set, there are still some cases in
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// which we must validate the cached response with the server.
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if (loadFlags & nsIRequest::VALIDATE_NEVER) {
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LOG(("VALIDATE_NEVER set\n"));
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// if no-store validate cached response (see bug 112564)
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if (cachedResponseHead->NoStore()) {
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LOG(("Validating based on no-store logic\n"));
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return true;
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}
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LOG(("NOT validating based on VALIDATE_NEVER load flag\n"));
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return false;
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}
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// check if validation is strictly required...
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if (cachedResponseHead->MustValidate()) {
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LOG(("Validating based on MustValidate() returning TRUE\n"));
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return true;
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}
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// possibly serve from cache for a custom If-Match/If-Unmodified-Since
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// conditional request
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if (customConditionalRequest &&
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!requestHead.HasHeader(nsHttp::If_Match) &&
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!requestHead.HasHeader(nsHttp::If_Unmodified_Since)) {
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LOG(("Validating based on a custom conditional request\n"));
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return true;
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}
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// previously we also checked for a query-url w/out expiration
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// and didn't do heuristic on it. but defacto that is allowed now.
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//
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// Check if the cache entry has expired...
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bool doValidation = true;
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uint32_t now = NowInSeconds();
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uint32_t age = 0;
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nsresult rv = cachedResponseHead->ComputeCurrentAge(now, now, &age);
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if (NS_FAILED(rv)) {
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return true;
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}
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uint32_t freshness = 0;
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rv = cachedResponseHead->ComputeFreshnessLifetime(&freshness);
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if (NS_FAILED(rv)) {
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return true;
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}
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uint32_t expiration = 0;
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rv = entry->GetExpirationTime(&expiration);
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if (NS_FAILED(rv)) {
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return true;
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}
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uint32_t maxAgeRequest, maxStaleRequest, minFreshRequest;
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LOG((" NowInSeconds()=%u, expiration time=%u, freshness lifetime=%u, age=%u",
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now, expiration, freshness, age));
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if (cacheControlRequest.NoCache()) {
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LOG((" validating, no-cache request"));
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doValidation = true;
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} else if (cacheControlRequest.MaxStale(&maxStaleRequest)) {
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uint32_t staleTime = age > freshness ? age - freshness : 0;
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doValidation = staleTime > maxStaleRequest;
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LOG((" validating=%d, max-stale=%u requested", doValidation, maxStaleRequest));
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} else if (cacheControlRequest.MaxAge(&maxAgeRequest)) {
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// The input information for age and freshness calculation are in seconds.
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// Hence, the internal logic can't have better resolution than seconds too.
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// To make max-age=0 case work even for requests made in less than a second
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// after the last response has been received, we use >= for compare. This
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// is correct because of the rounding down of the age calculated value.
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doValidation = age >= maxAgeRequest;
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LOG((" validating=%d, max-age=%u requested", doValidation, maxAgeRequest));
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} else if (cacheControlRequest.MinFresh(&minFreshRequest)) {
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uint32_t freshTime = freshness > age ? freshness - age : 0;
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doValidation = freshTime < minFreshRequest;
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LOG((" validating=%d, min-fresh=%u requested", doValidation, minFreshRequest));
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} else if (now < expiration) {
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doValidation = false;
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LOG((" not validating, expire time not in the past"));
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} else if (cachedResponseHead->MustValidateIfExpired()) {
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doValidation = true;
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} else if (loadFlags & nsIRequest::VALIDATE_ONCE_PER_SESSION) {
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// If the cached response does not include expiration infor-
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// mation, then we must validate the response, despite whether
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// or not this is the first access this session. This behavior
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// is consistent with existing browsers and is generally expected
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// by web authors.
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if (freshness == 0)
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doValidation = true;
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else
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doValidation = fromPreviousSession;
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} else {
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doValidation = true;
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}
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LOG(("%salidating based on expiration time\n", doValidation ? "V" : "Not v"));
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return doValidation;
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}
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nsresult
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GetHttpResponseHeadFromCacheEntry(nsICacheEntry *entry, nsHttpResponseHead *cachedResponseHead)
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{
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nsCString buf;
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// A "original-response-headers" metadata element holds network original headers,
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// i.e. the headers in the form as they arrieved from the network.
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// We need to get the network original headers first, because we need to keep them
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// in order.
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nsresult rv = entry->GetMetaDataElement("original-response-headers", getter_Copies(buf));
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if (NS_SUCCEEDED(rv)) {
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rv = cachedResponseHead->ParseCachedOriginalHeaders((char *) buf.get());
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if (NS_FAILED(rv)) {
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LOG((" failed to parse original-response-headers\n"));
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}
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}
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buf.Adopt(nullptr);
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// A "response-head" metadata element holds response head, e.g. response status
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// line and headers in the form Firefox uses them internally (no dupicate
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// headers, etc.).
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rv = entry->GetMetaDataElement("response-head", getter_Copies(buf));
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NS_ENSURE_SUCCESS(rv, rv);
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// Parse string stored in a "response-head" metadata element.
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// These response headers will be merged with the orignal headers (i.e. the
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// headers stored in a "original-response-headers" metadata element).
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rv = cachedResponseHead->ParseCachedHead(buf.get());
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NS_ENSURE_SUCCESS(rv, rv);
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buf.Adopt(nullptr);
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return NS_OK;
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}
|
|
|
|
nsresult
|
|
CheckPartial(nsICacheEntry* aEntry, int64_t *aSize, int64_t *aContentLength,
|
|
nsHttpResponseHead *responseHead)
|
|
{
|
|
nsresult rv;
|
|
|
|
rv = aEntry->GetDataSize(aSize);
|
|
|
|
if (NS_ERROR_IN_PROGRESS == rv) {
|
|
*aSize = -1;
|
|
rv = NS_OK;
|
|
}
|
|
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (!responseHead) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
*aContentLength = responseHead->ContentLength();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
DetermineFramingAndImmutability(nsICacheEntry *entry,
|
|
nsHttpResponseHead *responseHead, bool isHttps,
|
|
bool *weaklyFramed, bool *isImmutable)
|
|
{
|
|
nsCString framedBuf;
|
|
nsresult rv = entry->GetMetaDataElement("strongly-framed", getter_Copies(framedBuf));
|
|
// describe this in terms of explicitly weakly framed so as to be backwards
|
|
// compatible with old cache contents which dont have strongly-framed makers
|
|
*weaklyFramed = NS_SUCCEEDED(rv) && framedBuf.EqualsLiteral("0");
|
|
*isImmutable = !*weaklyFramed && isHttps && responseHead->Immutable();
|
|
}
|
|
|
|
bool
|
|
IsBeforeLastActiveTabLoadOptimization(TimeStamp const & when)
|
|
{
|
|
return gHttpHandler && gHttpHandler->IsBeforeLastActiveTabLoadOptimization(when);
|
|
}
|
|
|
|
void
|
|
NotifyActiveTabLoadOptimization()
|
|
{
|
|
if (gHttpHandler) {
|
|
gHttpHandler->NotifyActiveTabLoadOptimization();
|
|
}
|
|
}
|
|
|
|
TimeStamp const GetLastActiveTabLoadOptimizationHit()
|
|
{
|
|
return gHttpHandler ? gHttpHandler->GetLastActiveTabLoadOptimizationHit() : TimeStamp();
|
|
}
|
|
|
|
void
|
|
SetLastActiveTabLoadOptimizationHit(TimeStamp const &when)
|
|
{
|
|
if (gHttpHandler) {
|
|
gHttpHandler->SetLastActiveTabLoadOptimizationHit(when);
|
|
}
|
|
}
|
|
|
|
HttpVersion
|
|
GetHttpVersionFromSpdy(SpdyVersion sv)
|
|
{
|
|
MOZ_DIAGNOSTIC_ASSERT(sv != SpdyVersion::NONE);
|
|
MOZ_ASSERT(sv == SpdyVersion::HTTP_2);
|
|
|
|
return HttpVersion::v2_0;
|
|
}
|
|
|
|
} // namespace nsHttp
|
|
|
|
|
|
template<typename T> void
|
|
localEnsureBuffer(UniquePtr<T[]> &buf, uint32_t newSize,
|
|
uint32_t preserve, uint32_t &objSize)
|
|
{
|
|
if (objSize >= newSize)
|
|
return;
|
|
|
|
// Leave a little slop on the new allocation - add 2KB to
|
|
// what we need and then round the result up to a 4KB (page)
|
|
// boundary.
|
|
|
|
objSize = (newSize + 2048 + 4095) & ~4095;
|
|
|
|
static_assert(sizeof(T) == 1, "sizeof(T) must be 1");
|
|
auto tmp = MakeUnique<T[]>(objSize);
|
|
if (preserve) {
|
|
memcpy(tmp.get(), buf.get(), preserve);
|
|
}
|
|
buf = std::move(tmp);
|
|
}
|
|
|
|
void EnsureBuffer(UniquePtr<char[]> &buf, uint32_t newSize,
|
|
uint32_t preserve, uint32_t &objSize)
|
|
{
|
|
localEnsureBuffer<char> (buf, newSize, preserve, objSize);
|
|
}
|
|
|
|
void EnsureBuffer(UniquePtr<uint8_t[]> &buf, uint32_t newSize,
|
|
uint32_t preserve, uint32_t &objSize)
|
|
{
|
|
localEnsureBuffer<uint8_t> (buf, newSize, preserve, objSize);
|
|
}
|
|
|
|
static bool
|
|
IsTokenSymbol(signed char chr) {
|
|
if (chr < 33 || chr == 127 ||
|
|
chr == '(' || chr == ')' || chr == '<' || chr == '>' ||
|
|
chr == '@' || chr == ',' || chr == ';' || chr == ':' ||
|
|
chr == '"' || chr == '/' || chr == '[' || chr == ']' ||
|
|
chr == '?' || chr == '=' || chr == '{' || chr == '}' || chr == '\\') {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
ParsedHeaderPair::ParsedHeaderPair(const char *name, int32_t nameLen,
|
|
const char *val, int32_t valLen,
|
|
bool isQuotedValue)
|
|
: mName(nsDependentCSubstring(nullptr, 0u))
|
|
, mValue(nsDependentCSubstring(nullptr, 0u))
|
|
, mIsQuotedValue(isQuotedValue)
|
|
{
|
|
if (nameLen > 0) {
|
|
mName.Rebind(name, name + nameLen);
|
|
}
|
|
if (valLen > 0) {
|
|
if (mIsQuotedValue) {
|
|
RemoveQuotedStringEscapes(val, valLen);
|
|
mValue.Rebind(mUnquotedValue.BeginWriting(), mUnquotedValue.Length());
|
|
} else {
|
|
mValue.Rebind(val, val + valLen);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
ParsedHeaderPair::RemoveQuotedStringEscapes(const char *val, int32_t valLen)
|
|
{
|
|
mUnquotedValue.Truncate();
|
|
const char *c = val;
|
|
for (int32_t i = 0; i < valLen; ++i) {
|
|
if (c[i] == '\\' && c[i + 1]) {
|
|
++i;
|
|
}
|
|
mUnquotedValue.Append(c[i]);
|
|
}
|
|
}
|
|
|
|
static
|
|
void Tokenize(const char *input, uint32_t inputLen, const char token,
|
|
const std::function<void(const char *, uint32_t)>& consumer)
|
|
{
|
|
auto trimWhitespace =
|
|
[] (const char *in, uint32_t inLen, const char **out, uint32_t *outLen) {
|
|
*out = in;
|
|
*outLen = inLen;
|
|
if (inLen == 0) {
|
|
return;
|
|
}
|
|
|
|
// Trim leading space
|
|
while (nsCRT::IsAsciiSpace(**out)) {
|
|
(*out)++;
|
|
--(*outLen);
|
|
}
|
|
|
|
// Trim tailing space
|
|
for (const char *i = *out + *outLen - 1; i >= *out; --i) {
|
|
if (!nsCRT::IsAsciiSpace(*i)) {
|
|
break;
|
|
}
|
|
--(*outLen);
|
|
}
|
|
};
|
|
|
|
const char *first = input;
|
|
bool inQuote = false;
|
|
const char *result = nullptr;
|
|
uint32_t resultLen = 0;
|
|
for (uint32_t index = 0; index < inputLen; ++index) {
|
|
if (inQuote && input[index] == '\\' && input[index + 1]) {
|
|
index++;
|
|
continue;
|
|
}
|
|
if (input[index] == '"') {
|
|
inQuote = !inQuote;
|
|
continue;
|
|
}
|
|
if (inQuote) {
|
|
continue;
|
|
}
|
|
if (input[index] == token) {
|
|
trimWhitespace(first, (input + index) - first,
|
|
&result, &resultLen);
|
|
consumer(result, resultLen);
|
|
first = input + index + 1;
|
|
}
|
|
}
|
|
|
|
trimWhitespace(first, (input + inputLen) - first,
|
|
&result, &resultLen);
|
|
consumer(result, resultLen);
|
|
}
|
|
|
|
ParsedHeaderValueList::ParsedHeaderValueList(const char *t,
|
|
uint32_t len,
|
|
bool allowInvalidValue)
|
|
{
|
|
if (!len) {
|
|
return;
|
|
}
|
|
|
|
ParsedHeaderValueList *self = this;
|
|
auto consumer = [=] (const char *output, uint32_t outputLength) {
|
|
self->ParseNameAndValue(output, allowInvalidValue);
|
|
};
|
|
|
|
Tokenize(t, len, ';', consumer);
|
|
}
|
|
|
|
void
|
|
ParsedHeaderValueList::ParseNameAndValue(const char *input, bool allowInvalidValue)
|
|
{
|
|
const char *nameStart = input;
|
|
const char *nameEnd = nullptr;
|
|
const char *valueStart = input;
|
|
const char *valueEnd = nullptr;
|
|
bool isQuotedString = false;
|
|
bool invalidValue = false;
|
|
|
|
for (; *input && *input != ';' && *input != ',' &&
|
|
!nsCRT::IsAsciiSpace(*input) && *input != '='; input++)
|
|
;
|
|
|
|
nameEnd = input;
|
|
|
|
if (!(nameEnd - nameStart)) {
|
|
return;
|
|
}
|
|
|
|
// Check whether param name is a valid token.
|
|
for (const char *c = nameStart; c < nameEnd; c++) {
|
|
if (!IsTokenSymbol(*c)) {
|
|
nameEnd = c;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!(nameEnd - nameStart)) {
|
|
return;
|
|
}
|
|
|
|
while (nsCRT::IsAsciiSpace(*input)) {
|
|
++input;
|
|
}
|
|
|
|
if (!*input || *input++ != '=') {
|
|
mValues.AppendElement(ParsedHeaderPair(nameStart, nameEnd - nameStart,
|
|
nullptr, 0, false));
|
|
return;
|
|
}
|
|
|
|
while (nsCRT::IsAsciiSpace(*input)) {
|
|
++input;
|
|
}
|
|
|
|
if (*input != '"') {
|
|
// The value is a token, not a quoted string.
|
|
valueStart = input;
|
|
for (valueEnd = input;
|
|
*valueEnd && !nsCRT::IsAsciiSpace (*valueEnd) &&
|
|
*valueEnd != ';' && *valueEnd != ',';
|
|
valueEnd++)
|
|
;
|
|
input = valueEnd;
|
|
if (!allowInvalidValue) {
|
|
for (const char *c = valueStart; c < valueEnd; c++) {
|
|
if (!IsTokenSymbol(*c)) {
|
|
valueEnd = c;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
bool foundQuotedEnd = false;
|
|
isQuotedString = true;
|
|
|
|
++input;
|
|
valueStart = input;
|
|
for (valueEnd = input; *valueEnd; ++valueEnd) {
|
|
if (*valueEnd == '\\' && *(valueEnd + 1)) {
|
|
++valueEnd;
|
|
}
|
|
else if (*valueEnd == '"') {
|
|
foundQuotedEnd = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!foundQuotedEnd) {
|
|
invalidValue = true;
|
|
}
|
|
|
|
input = valueEnd;
|
|
// *valueEnd != null means that *valueEnd is quote character.
|
|
if (*valueEnd) {
|
|
input++;
|
|
}
|
|
}
|
|
|
|
if (invalidValue) {
|
|
valueEnd = valueStart;
|
|
}
|
|
|
|
mValues.AppendElement(ParsedHeaderPair(nameStart, nameEnd - nameStart,
|
|
valueStart, valueEnd - valueStart,
|
|
isQuotedString));
|
|
}
|
|
|
|
ParsedHeaderValueListList::ParsedHeaderValueListList(const nsCString &fullHeader,
|
|
bool allowInvalidValue)
|
|
: mFull(fullHeader)
|
|
{
|
|
auto &values = mValues;
|
|
auto consumer =
|
|
[&values, allowInvalidValue] (const char *output, uint32_t outputLength) {
|
|
values.AppendElement(ParsedHeaderValueList(output,
|
|
outputLength,
|
|
allowInvalidValue));
|
|
};
|
|
|
|
Tokenize(mFull.BeginReading(), mFull.Length(), ',', consumer);
|
|
}
|
|
|
|
void LogCallingScriptLocation(void* instance)
|
|
{
|
|
if (!LOG4_ENABLED()) {
|
|
return;
|
|
}
|
|
|
|
JSContext* cx = nsContentUtils::GetCurrentJSContext();
|
|
if (!cx) {
|
|
return;
|
|
}
|
|
|
|
nsAutoCString fileNameString;
|
|
uint32_t line = 0, col = 0;
|
|
if (!nsJSUtils::GetCallingLocation(cx, fileNameString, &line, &col)) {
|
|
return;
|
|
}
|
|
|
|
LOG(("%p called from script: %s:%u:%u", instance, fileNameString.get(), line, col));
|
|
}
|
|
|
|
} // namespace net
|
|
} // namespace mozilla
|