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/* Copyright 2013 The Chromium Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/**
* This file defines the <code>PPB_HostResolver</code> interface.
*/
[generate_thunk]
label Chrome {
M29 = 1.0
};
/**
* <code>PP_HostResolver_Flag</code> is an enumeration of flags which can be
* OR-ed and passed to the host resolver. Currently there is only one flag
* defined.
*/
[assert_size(4)]
enum PP_HostResolver_Flag {
/**
* Hint to request the canonical name of the host, which can be retrieved by
* <code>GetCanonicalName()</code>.
*/
PP_HOSTRESOLVER_FLAG_CANONNAME = 1 << 0
};
/**
* <code>PP_HostResolver_Hint</code> represents hints for host resolution.
*/
[assert_size(8)]
struct PP_HostResolver_Hint {
/**
* Network address family.
*/
PP_NetAddress_Family family;
/**
* Combination of flags from <code>PP_HostResolver_Flag</code>.
*/
int32_t flags;
};
/**
* The <code>PPB_HostResolver</code> interface supports host name
* resolution.
*
* Permissions: In order to run <code>Resolve()</code>, apps permission
* <code>socket</code> with subrule <code>resolve-host</code> is required.
* For more details about network communication permissions, please see:
* http://developer.chrome.com/apps/app_network.html
*/
interface PPB_HostResolver {
/**
* Creates a host resolver resource.
*
* @param[in] instance A <code>PP_Instance</code> identifying one instance of
* a module.
*
* @return A <code>PP_Resource</code> corresponding to a host reslover or 0
* on failure.
*/
PP_Resource Create([in] PP_Instance instance);
/**
* Determines if a given resource is a host resolver.
*
* @param[in] resource A <code>PP_Resource</code> to check.
*
* @return <code>PP_TRUE</code> if the input is a
* <code>PPB_HostResolver</code> resource; <code>PP_FALSE</code> otherwise.
*/
PP_Bool IsHostResolver([in] PP_Resource resource);
/**
* Requests resolution of a host name. If the call completes successfully, the
* results can be retrieved by <code>GetCanonicalName()</code>,
* <code>GetNetAddressCount()</code> and <code>GetNetAddress()</code>.
*
* @param[in] host_resolver A <code>PP_Resource</code> corresponding to a host
* resolver.
* @param[in] host The host name (or IP address literal) to resolve.
* @param[in] port The port number to be set in the resulting network
* addresses.
* @param[in] hint A <code>PP_HostResolver_Hint</code> structure providing
* hints for host resolution.
* @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
* completion.
*
* @return An int32_t containing an error code from <code>pp_errors.h</code>.
* <code>PP_ERROR_NOACCESS</code> will be returned if the caller doesn't have
* required permissions. <code>PP_ERROR_NAME_NOT_RESOLVED</code> will be
* returned if the host name couldn't be resolved.
*/
int32_t Resolve([in] PP_Resource host_resolver,
[in] str_t host,
[in] uint16_t port,
[in] PP_HostResolver_Hint hint,
[in] PP_CompletionCallback callback);
/**
* Gets the canonical name of the host.
*
* @param[in] host_resolver A <code>PP_Resource</code> corresponding to a host
* resolver.
*
* @return A string <code>PP_Var</code> on success, which is an empty string
* if <code>PP_HOSTRESOLVER_FLAG_CANONNAME</code> is not set in the hint flags
* when calling <code>Resolve()</code>; an undefined <code>PP_Var</code> if
* there is a pending <code>Resolve()</code> call or the previous
* <code>Resolve()</code> call failed.
*/
PP_Var GetCanonicalName([in] PP_Resource host_resolver);
/**
* Gets the number of network addresses.
*
* @param[in] host_resolver A <code>PP_Resource</code> corresponding to a host
* resolver.
*
* @return The number of available network addresses on success; 0 if there is
* a pending <code>Resolve()</code> call or the previous
* <code>Resolve()</code> call failed.
*/
uint32_t GetNetAddressCount([in] PP_Resource host_resolver);
/**
* Gets a network address.
*
* @param[in] host_resolver A <code>PP_Resource</code> corresponding to a host
* resolver.
* @param[in] index An index indicating which address to return.
*
* @return A <code>PPB_NetAddress</code> resource on success; 0 if there is a
* pending <code>Resolve()</code> call or the previous <code>Resolve()</code>
* call failed, or the specified index is out of range.
*/
PP_Resource GetNetAddress([in] PP_Resource host_resolver,
[in] uint32_t index);
};
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