DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (237e4c0633fd)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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"

%{C++
#include "nsCOMPtr.h"

/**
 * Protocol handlers are registered with XPCOM under the following CONTRACTID prefix:
 */
#define NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX "@mozilla.org/network/protocol;1?name="
/**
 * For example, "@mozilla.org/network/protocol;1?name=http"
 */

#if defined(MOZ_THUNDERBIRD) || defined(MOZ_SUITE)
#define IS_ORIGIN_IS_FULL_SPEC_DEFINED 1
#endif
%}

interface nsIURI;
interface nsIChannel;
interface nsILoadInfo;

/**
 * nsIProtocolHandlerWithDynamicFlags
 *
 * Protocols that wish to return different flags depending on the URI should
 * implement this interface.
 */
[scriptable, builtinclass, uuid(65a8e823-0591-4fc0-a56a-03265e0a4ce8)]
interface nsIProtocolHandlerWithDynamicFlags : nsISupports
{
    /*
     * Returns protocol flags for the given URI, which may be different from the
     * flags for another URI of the same scheme.
     */
    unsigned long getFlagsForURI(in nsIURI aURI);
};

/**
 * nsIProtocolHandler
 */
[scriptable, uuid(a87210e6-7c8c-41f7-864d-df809015193e)]
interface nsIProtocolHandler : nsISupports
{
    /**
     * The scheme of this protocol (e.g., "file").
     */
    readonly attribute ACString scheme;

    /** 
     * The default port is the port that this protocol normally uses.
     * If a port does not make sense for the protocol (e.g., "about:")
     * then -1 will be returned.
     */
    readonly attribute long defaultPort;

    /**
     * Returns the protocol specific flags (see flag definitions below).  
     */
    readonly attribute unsigned long protocolFlags;

%{C++
  // Helper method to get the protocol flags in the right way.
  nsresult DoGetProtocolFlags(nsIURI* aURI, uint32_t* aFlags)
  {
      nsCOMPtr<nsIProtocolHandlerWithDynamicFlags> dh = do_QueryInterface(this);
      nsresult rv = dh ? dh->GetFlagsForURI(aURI, aFlags) : GetProtocolFlags(aFlags);
      if (NS_SUCCEEDED(rv)) {
#if !IS_ORIGIN_IS_FULL_SPEC_DEFINED
        MOZ_RELEASE_ASSERT(!(*aFlags & nsIProtocolHandler::ORIGIN_IS_FULL_SPEC),
                           "ORIGIN_IS_FULL_SPEC is unsupported but used");
#endif
      }
      return rv;
  }
%}

    /**
     * Makes a URI object that is suitable for loading by this protocol,
     * where the URI string is given as an UTF-8 string.  The caller may
     * provide the charset from which the URI string originated, so that
     * the URI string can be translated back to that charset (if necessary)
     * before communicating with, for example, the origin server of the URI
     * string.  (Many servers do not support UTF-8 IRIs at the present time,
     * so we must be careful about tracking the native charset of the origin
     * server.)
     *
     * @param aSpec          - the URI string in UTF-8 encoding. depending
     *                         on the protocol implementation, unicode character
     *                         sequences may or may not be %xx escaped.
     * @param aOriginCharset - the charset of the document from which this URI
     *                         string originated.  this corresponds to the
     *                         charset that should be used when communicating
     *                         this URI to an origin server, for example.  if
     *                         null, then UTF-8 encoding is assumed (i.e.,
     *                         no charset transformation from aSpec).
     * @param aBaseURI       - if null, aSpec must specify an absolute URI.
     *                         otherwise, aSpec may be resolved relative
     *                         to aBaseURI, depending on the protocol. 
     *                         If the protocol has no concept of relative 
     *                         URI aBaseURI will simply be ignored.
     */
    nsIURI newURI(in AUTF8String aSpec,
                  [optional] in string aOriginCharset,
                  [optional] in nsIURI aBaseURI);

    /**
     * Constructs a new channel from the given URI for this protocol handler and
     * sets the loadInfo for the constructed channel.
     */
    nsIChannel newChannel2(in nsIURI aURI, in nsILoadInfo aLoadinfo);

    /**
     * Constructs a new channel from the given URI for this protocol handler.
     */
    nsIChannel newChannel(in nsIURI aURI);

    /**
     * Allows a protocol to override blacklisted ports.
     *
     * This method will be called when there is an attempt to connect to a port 
     * that is blacklisted.  For example, for most protocols, port 25 (Simple Mail
     * Transfer) is banned.  When a URI containing this "known-to-do-bad-things" 
     * port number is encountered, this function will be called to ask if the 
     * protocol handler wants to override the ban.  
     */
    boolean allowPort(in long port, in string scheme);


    /**************************************************************************
     * Constants for the protocol flags (the first is the default mask, the
     * others are deviations):
     *
     * NOTE: Implementation must ignore any flags they do not understand.
     */

    /**
     * standard full URI with authority component and concept of relative
     * URIs (http, ftp, ...)
     */
    const unsigned long URI_STD = 0;

    /**
     * no concept of relative URIs (about, javascript, finger, ...)
     */
    const unsigned long URI_NORELATIVE = (1<<0);

    /**
     * no authority component (file, ...)
     */
    const unsigned long URI_NOAUTH = (1<<1);

    /**
     * This protocol handler can be proxied via a proxy (socks or http)
     * (e.g., irc, smtp, http, etc.).  If the protocol supports transparent
     * proxying, the handler should implement nsIProxiedProtocolHandler.
     *
     * If it supports only HTTP proxying, then it need not support
     * nsIProxiedProtocolHandler, but should instead set the ALLOWS_PROXY_HTTP
     * flag (see below).
     *
     * @see nsIProxiedProtocolHandler
     */
    const unsigned long ALLOWS_PROXY = (1<<2);

    /**
     * This protocol handler can be proxied using a http proxy (e.g., http,
     * ftp, etc.).  nsIIOService::newChannelFromURI will feed URIs from this
     * protocol handler to the HTTP protocol handler instead.  This flag is
     * ignored if ALLOWS_PROXY is not set.
     */
    const unsigned long ALLOWS_PROXY_HTTP = (1<<3);

    /**
     * The URIs for this protocol have no inherent security context, so
     * documents loaded via this protocol should inherit the security context
     * from the document that loads them.
     */
    const unsigned long URI_INHERITS_SECURITY_CONTEXT = (1<<4);

    /**
     * "Automatic" loads that would replace the document (e.g. <meta> refresh,
     * certain types of XLinks, possibly other loads that the application
     * decides are not user triggered) are not allowed if the originating (NOT
     * the target) URI has this protocol flag.  Note that the decision as to
     * what constitutes an "automatic" load is made externally, by the caller
     * of nsIScriptSecurityManager::CheckLoadURI.  See documentation for that
     * method for more information.
     *
     * A typical protocol that might want to set this flag is a protocol that
     * shows highly untrusted content in a viewing area that the user expects
     * to have a lot of control over, such as an e-mail reader.
     */
    const unsigned long URI_FORBIDS_AUTOMATIC_DOCUMENT_REPLACEMENT = (1<<5);

    /**
     * +-------------------------------------------------------------------+
     * |                                                                   |
     * |  ALL PROTOCOL HANDLERS MUST SET ONE OF THE FOLLOWING FIVE FLAGS.  |
     * |                                                                   |
     * +-------------------------------------------------------------------+
     *
     * These flags are used to determine who is allowed to load URIs for this
     * protocol.  Note that if a URI is nested, only the flags for the
     * innermost URI matter.  See nsINestedURI.
     *
     * If none of these five flags are set, the URI must be treated as if it
     * had the URI_LOADABLE_BY_ANYONE flag set, for compatibility with protocol
     * handlers written against Gecko 1.8 or earlier.  In this case, there may
     * be run-time warning messages indicating that a "default insecure"
     * assumption is being made.  At some point in the futures (Mozilla 2.0,
     * most likely), these warnings will become errors.
     */

    /**
     * The URIs for this protocol can be loaded by anyone.  For example, any
     * website should be allowed to trigger a load of a URI for this protocol.
     * Web-safe protocols like "http" should set this flag.
     */
    const unsigned long URI_LOADABLE_BY_ANYONE = (1<<6);
    
    /**
     * The URIs for this protocol are UNSAFE if loaded by untrusted (web)
     * content and may only be loaded by privileged code (for example, code
     * which has the system principal).  Various internal protocols should set
     * this flag.
     */
    const unsigned long URI_DANGEROUS_TO_LOAD = (1<<7);
    
    /**
     * The URIs for this protocol point to resources that are part of the
     * application's user interface.  There are cases when such resources may
     * be made accessible to untrusted content such as web pages, so this is
     * less restrictive than URI_DANGEROUS_TO_LOAD but more restrictive than
     * URI_LOADABLE_BY_ANYONE.  See the documentation for
     * nsIScriptSecurityManager::CheckLoadURI.
     */
    const unsigned long URI_IS_UI_RESOURCE = (1<<8);

    /**
     * Loading of URIs for this protocol from other origins should only be
     * allowed if those origins should have access to the local filesystem.
     * It's up to the application to decide what origins should have such
     * access.  Protocols like "file" that point to local data should set this
     * flag.
     */
    const unsigned long URI_IS_LOCAL_FILE = (1<<9);

    /**
     * The URIs for this protocol can be loaded only by callers with a
     * principal that subsumes this uri. For example, privileged code and
     * websites that are same origin as this uri.
     */
    const unsigned long URI_LOADABLE_BY_SUBSUMERS = (1<<10);

    /**
     * Channels using this protocol never call OnDataAvailable
     * on the listener passed to AsyncOpen and they therefore
     * do not return any data that we can use.
     */
    const unsigned long URI_DOES_NOT_RETURN_DATA = (1<<11);

    /**
     * URIs for this protocol are considered to be local resources.  This could
     * be a local file (URI_IS_LOCAL_FILE), a UI resource (URI_IS_UI_RESOURCE),
     * or something else that would not hit the network.
     */
    const unsigned long URI_IS_LOCAL_RESOURCE = (1<<12);

    /**
     * URIs for this protocol execute script when they are opened.
     */
    const unsigned long URI_OPENING_EXECUTES_SCRIPT = (1<<13);

    /**
     * Loading channels from this protocol has side-effects that make
     * it unsuitable for saving to a local file.
     */
    const unsigned long URI_NON_PERSISTABLE = (1<<14);

    /**
     * This protocol handler forbids accessing cookies e.g. for mail related
     * protocols.
     */
    const unsigned long URI_FORBIDS_COOKIE_ACCESS = (1<<15);

    /**
     * URIs for this protocol require the webapps permission on the principal
     * when opening URIs for a different domain. See bug#773886
     */
    const unsigned long URI_CROSS_ORIGIN_NEEDS_WEBAPPS_PERM = (1<<16);

    /**
     * Channels for this protocol don't need to spin the event loop to handle
     * Open() and reads on the resulting stream.
     */
    const unsigned long URI_SYNC_LOAD_IS_OK = (1<<17);

    /**
     * All the origins whose URI has this scheme are considered potentially
     * trustworthy.
     * Per the SecureContext spec, https: and wss: should be considered
     * a priori secure, and implementations may consider other,
     * implementation-specific URI schemes as secure.
     */
    const unsigned long URI_IS_POTENTIALLY_TRUSTWORTHY = (1<<18);

    /**
     * This URI may be fetched and the contents are visible to anyone. This is
     * semantically equivalent to the resource being served with all-access CORS
     * headers.
     */
    const unsigned long URI_FETCHABLE_BY_ANYONE = (1 << 19);

    /**
     * If this flag is set, then the origin for this protocol is the full URI
     * spec, not just the scheme + host + port.
     *
     * Note: this is not supported in Firefox.  It is currently only available
     * in Thunderbird and SeaMonkey.
     */
    const unsigned long ORIGIN_IS_FULL_SPEC = (1 << 20);

    /**
     * If this flag is set, the URI does not always allow content using the same
     * protocol to link to it.
     */
    const unsigned long URI_SCHEME_NOT_SELF_LINKABLE = (1 << 21);

    /**
     * The URIs for this protocol can be loaded by extensions.
     */
    const unsigned long URI_LOADABLE_BY_EXTENSIONS = (1 << 22);
};