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-rw-r--r--dom/security/PolicyTokenizer.cpp70
1 files changed, 70 insertions, 0 deletions
diff --git a/dom/security/PolicyTokenizer.cpp b/dom/security/PolicyTokenizer.cpp
new file mode 100644
index 0000000000..8e28e6ce32
--- /dev/null
+++ b/dom/security/PolicyTokenizer.cpp
@@ -0,0 +1,70 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#include "PolicyTokenizer.h"
+
+#include "mozilla/Logging.h"
+
+static mozilla::LogModule* GetPolicyTokenizerLog() {
+ static mozilla::LazyLogModule gPolicyTokenizerPRLog("PolicyTokenizer");
+ return gPolicyTokenizerPRLog;
+}
+
+#define POLICYTOKENIZERLOG(args) \
+ MOZ_LOG(GetPolicyTokenizerLog(), mozilla::LogLevel::Debug, args)
+
+static const char16_t SEMICOL = ';';
+
+PolicyTokenizer::PolicyTokenizer(const char16_t* aStart, const char16_t* aEnd)
+ : mCurChar(aStart), mEndChar(aEnd) {
+ POLICYTOKENIZERLOG(("PolicyTokenizer::PolicyTokenizer"));
+}
+
+PolicyTokenizer::~PolicyTokenizer() {
+ POLICYTOKENIZERLOG(("PolicyTokenizer::~PolicyTokenizer"));
+}
+
+void PolicyTokenizer::generateNextToken() {
+ skipWhiteSpaceAndSemicolon();
+ MOZ_ASSERT(mCurToken.Length() == 0);
+ const char16_t* const start = mCurChar;
+ while (!atEnd() && !nsContentUtils::IsHTMLWhitespace(*mCurChar) &&
+ *mCurChar != SEMICOL) {
+ mCurChar++;
+ }
+ if (start != mCurChar) {
+ mCurToken.Append(start, mCurChar - start);
+ }
+ POLICYTOKENIZERLOG(("PolicyTokenizer::generateNextToken: %s",
+ NS_ConvertUTF16toUTF8(mCurToken).get()));
+}
+
+void PolicyTokenizer::generateTokens(policyTokens& outTokens) {
+ POLICYTOKENIZERLOG(("PolicyTokenizer::generateTokens"));
+
+ // dirAndSrcs holds one set of [ name, src, src, src, ... ]
+ nsTArray<nsString> dirAndSrcs;
+
+ while (!atEnd()) {
+ generateNextToken();
+ dirAndSrcs.AppendElement(mCurToken);
+ skipWhiteSpace();
+ if (atEnd() || accept(SEMICOL)) {
+ outTokens.AppendElement(std::move(dirAndSrcs));
+ dirAndSrcs.ClearAndRetainStorage();
+ }
+ }
+}
+
+void PolicyTokenizer::tokenizePolicy(const nsAString& aPolicyString,
+ policyTokens& outTokens) {
+ POLICYTOKENIZERLOG(("PolicyTokenizer::tokenizePolicy"));
+
+ PolicyTokenizer tokenizer(aPolicyString.BeginReading(),
+ aPolicyString.EndReading());
+
+ tokenizer.generateTokens(outTokens);
+}