1 files changed, 141 insertions, 0 deletions
diff --git a/parser/html/nsIParserUtils.idl b/parser/html/nsIParserUtils.idl
new file mode 100644
index 0000000000..a8027a83fb
--- /dev/null
+++ b/parser/html/nsIParserUtils.idl
@@ -0,0 +1,141 @@
+/* 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 "nsISupports.idl"
+
+interface nsIURI;
+
+webidl DocumentFragment;
+webidl Element;
+
+/**
+ * Non-Web HTML parser functionality to Firefox extensions and XULRunner apps.
+ * Don't use this from within Gecko--use nsContentUtils, nsTreeSanitizer, etc.
+ * directly instead.
+ */
+[builtinclass, scriptable, uuid(a1101145-0025-411e-8873-fdf57bf28128)]
+interface nsIParserUtils : nsISupports
+{
+  /**
+   * Flag for sanitizer: Allow comment nodes.
+   */
+  const unsigned long SanitizerAllowComments = (1 << 0);
+
+  /**
+   * Flag for sanitizer: Allow <style> and style="" (with contents sanitized
+   * in case of -moz-binding). Note! If -moz-binding is absent, properties
+   * that might be XSS risks in other Web engines are preserved!
+   */
+  const unsigned long SanitizerAllowStyle = (1 << 1);
+
+  /**
+   * Flag for sanitizer: Only allow cid: URLs for embedded content.
+   *
+   * At present, sanitizing CSS backgrounds, etc., is not supported, so setting
+   * this together with SanitizerAllowStyle doesn't make sense.
+   *
+   * At present, sanitizing CSS syntax in SVG presentational attributes is not
+   * supported, so this option flattens out SVG.
+   */
+  const unsigned long SanitizerCidEmbedsOnly = (1 << 2);
+
+  /**
+   * Flag for sanitizer: Drop non-CSS presentational HTML elements and
+   * attributes, such as <font>, <center> and bgcolor="".
+   */
+  const unsigned long SanitizerDropNonCSSPresentation = (1 << 3);
+
+  /**
+   * Flag for sanitizer: Drop forms and form controls (excluding
+   * fieldset/legend).
+   */
+  const unsigned long SanitizerDropForms = (1 << 4);
+
+  /**
+   * Flag for sanitizer: Drop <img>, <video>, <audio> and <source> and flatten
+   * out SVG.
+   */
+  const unsigned long SanitizerDropMedia = (1 << 5);
+
+  /**
+   * Flag for sanitizer: Log messages to the console for everything that gets
+   * sanitized
+   */
+  const unsigned long SanitizerLogRemovals = (1 << 6);
+
+  /**
+   * Parses a string into an HTML document, sanitizes the document and
+   * returns the result serialized to a string.
+   *
+   * The sanitizer is designed to protect against XSS when sanitized content
+   * is inserted into a different-origin context without an iframe-equivalent
+   * sandboxing mechanism.
+   *
+   * By default, the sanitizer doesn't try to avoid leaking information that
+   * the content was viewed to third parties. That is, by default, e.g.
+   * <img src> pointing to an HTTP server potentially controlled by a third
+   * party is not removed. To avoid ambient information leakage upon loading
+   * the sanitized content, use the SanitizerInternalEmbedsOnly flag. In that
+   * case, <a href> links (and similar) to other content are preserved, so an
+   * explicit user action (following a link) after the content has been loaded
+   * can still leak information.
+   *
+   * By default, non-dangerous non-CSS presentational HTML elements and
+   * attributes or forms are not removed. To remove these, use
+   * SanitizerDropNonCSSPresentation and/or SanitizerDropForms.
+   *
+   * By default, comments and CSS is removed. To preserve comments, use
+   * SanitizerAllowComments. To preserve <style> and style="", use
+   * SanitizerAllowStyle. -moz-binding is removed from <style> and style="" if
+   * present. In this case, properties that Gecko doesn't recognize can get
+   * removed as a side effect. Note! If -moz-binding is not present, <style>
+   * and style="" and SanitizerAllowStyle is specified, the sanitized content
+   * may still be XSS dangerous if loaded into a non-Gecko Web engine!
+   *
+   * @param src the HTML source to parse (C++ callers are allowed but not
+   *            required to use the same string for the return value.)
+   * @param flags sanitization option flags defined above
+   */
+  AString sanitize(in AString src, in unsigned long flags);
+
+  /**
+   * Removes conditional CSS (@media / etc) from the input string.
+   */
+  AString removeConditionalCSS(in AString src);
+
+  /**
+   * Convert HTML to plain text.
+   *
+   * @param src the HTML source to parse (C++ callers are allowed but not
+   *            required to use the same string for the return value.)
+   * @param flags conversion option flags defined in nsIDocumentEncoder
+   * @param wrapCol number of characters per line; 0 for no auto-wrapping
+   */
+  AString convertToPlainText(in AString src,
+                             in unsigned long flags,
+                             in unsigned long wrapCol);
+
+  /**
+   * Parses markup into a sanitized document fragment.
+   *
+   * @param fragment the input markup
+   * @param flags sanitization option flags defined above
+   * @param isXML true if |fragment| is XML and false if HTML
+   * @param baseURI the base URL for this fragment
+   * @param element the context node for the fragment parsing algorithm
+   */
+  DocumentFragment parseFragment(in AString fragment,
+                                 in unsigned long flags,
+                                 in boolean isXML,
+                                 in nsIURI baseURI,
+                                 in Element element);
+
+};
+
+%{ C++
+#define NS_PARSERUTILS_CONTRACTID \
+    "@mozilla.org/parserutils;1"
+#define NS_PARSERUTILS_CID  \
+{ 0xaf7b24cb, 0x893f, 0x41bb, { 0x96, 0x1f, 0x5a, 0x69, 0x38, 0x8e, 0x27, 0xc3 } }
+%}