LCOV - code coverage report
Current view: top level - glib/gio - gproxyresolver.c (source / functions) Hit Total Coverage
Test: unnamed Lines: 42 43 97.7 %
Date: 2024-04-23 05:16:05 Functions: 7 7 100.0 %
Branches: 20 26 76.9 %

           Branch data     Line data    Source code
       1                 :            : /* GIO - GLib Input, Output and Streaming Library
       2                 :            :  *
       3                 :            :  * Copyright (C) 2010 Collabora, Ltd.
       4                 :            :  *
       5                 :            :  * SPDX-License-Identifier: LGPL-2.1-or-later
       6                 :            :  *
       7                 :            :  * This library is free software; you can redistribute it and/or
       8                 :            :  * modify it under the terms of the GNU Lesser General Public
       9                 :            :  * License as published by the Free Software Foundation; either
      10                 :            :  * version 2.1 of the License, or (at your option) any later version.
      11                 :            :  *
      12                 :            :  * This library is distributed in the hope that it will be useful,
      13                 :            :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14                 :            :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15                 :            :  * Lesser General Public License for more details.
      16                 :            :  *
      17                 :            :  * You should have received a copy of the GNU Lesser General
      18                 :            :  * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
      19                 :            :  *
      20                 :            :  * Author: Nicolas Dufresne <nicolas.dufresne@collabora.co.uk>
      21                 :            :  */
      22                 :            : 
      23                 :            : #include "config.h"
      24                 :            : 
      25                 :            : #include "gproxyresolver.h"
      26                 :            : 
      27                 :            : #include <glib.h>
      28                 :            : #include "glibintl.h"
      29                 :            : 
      30                 :            : #include "gasyncresult.h"
      31                 :            : #include "gcancellable.h"
      32                 :            : #include "gtask.h"
      33                 :            : #include "giomodule.h"
      34                 :            : #include "gioerror.h"
      35                 :            : #include "giomodule-priv.h"
      36                 :            : #include "gnetworkingprivate.h"
      37                 :            : 
      38                 :            : /**
      39                 :            :  * GProxyResolver:
      40                 :            :  *
      41                 :            :  * `GProxyResolver` provides synchronous and asynchronous network proxy
      42                 :            :  * resolution. `GProxyResolver` is used within [class@Gio.SocketClient] through
      43                 :            :  * the method [method@Gio.SocketConnectable.proxy_enumerate].
      44                 :            :  *
      45                 :            :  * Implementations of `GProxyResolver` based on
      46                 :            :  * [libproxy](https://github.com/libproxy/libproxy) and GNOME settings can be
      47                 :            :  * found in [glib-networking](https://gitlab.gnome.org/GNOME/glib-networking).
      48                 :            :  * GIO comes with an implementation for use inside Flatpak portals.
      49                 :            :  *
      50                 :            :  * Since: 2.26
      51                 :            :  */
      52                 :            : 
      53                 :            : /**
      54                 :            :  * GProxyResolverInterface:
      55                 :            :  * @g_iface: The parent interface.
      56                 :            :  * @is_supported: the virtual function pointer for g_proxy_resolver_is_supported()
      57                 :            :  * @lookup: the virtual function pointer for g_proxy_resolver_lookup()
      58                 :            :  * @lookup_async: the virtual function pointer for
      59                 :            :  *  g_proxy_resolver_lookup_async()
      60                 :            :  * @lookup_finish: the virtual function pointer for
      61                 :            :  *  g_proxy_resolver_lookup_finish()
      62                 :            :  *
      63                 :            :  * The virtual function table for #GProxyResolver.
      64                 :            :  */
      65                 :            : 
      66   [ +  +  +  -  :       2265 : G_DEFINE_INTERFACE (GProxyResolver, g_proxy_resolver, G_TYPE_OBJECT)
                   +  + ]
      67                 :            : 
      68                 :            : static void
      69                 :          9 : g_proxy_resolver_default_init (GProxyResolverInterface *iface)
      70                 :            : {
      71                 :          9 : }
      72                 :            : 
      73                 :            : static GProxyResolver *proxy_resolver_default_singleton = NULL;  /* (owned) (atomic) */
      74                 :            : 
      75                 :            : /**
      76                 :            :  * g_proxy_resolver_get_default:
      77                 :            :  *
      78                 :            :  * Gets the default #GProxyResolver for the system.
      79                 :            :  *
      80                 :            :  * Returns: (not nullable) (transfer none): the default #GProxyResolver, which
      81                 :            :  *     will be a dummy object if no proxy resolver is available
      82                 :            :  *
      83                 :            :  * Since: 2.26
      84                 :            :  */
      85                 :            : GProxyResolver *
      86                 :        464 : g_proxy_resolver_get_default (void)
      87                 :            : {
      88   [ +  +  +  -  :        464 :   if (g_once_init_enter_pointer (&proxy_resolver_default_singleton))
                   +  + ]
      89                 :            :     {
      90                 :            :       GProxyResolver *singleton;
      91                 :            : 
      92                 :          7 :       singleton = _g_io_module_get_default (G_PROXY_RESOLVER_EXTENSION_POINT_NAME,
      93                 :            :                                             "GIO_USE_PROXY_RESOLVER",
      94                 :            :                                             (GIOModuleVerifyFunc) g_proxy_resolver_is_supported);
      95                 :            : 
      96                 :          7 :       g_once_init_leave_pointer (&proxy_resolver_default_singleton, singleton);
      97                 :            :     }
      98                 :            : 
      99                 :        464 :   return proxy_resolver_default_singleton;
     100                 :            : }
     101                 :            : 
     102                 :            : /**
     103                 :            :  * g_proxy_resolver_is_supported:
     104                 :            :  * @resolver: a #GProxyResolver
     105                 :            :  *
     106                 :            :  * Checks if @resolver can be used on this system. (This is used
     107                 :            :  * internally; g_proxy_resolver_get_default() will only return a proxy
     108                 :            :  * resolver that returns %TRUE for this method.)
     109                 :            :  *
     110                 :            :  * Returns: %TRUE if @resolver is supported.
     111                 :            :  *
     112                 :            :  * Since: 2.26
     113                 :            :  */
     114                 :            : gboolean
     115                 :         12 : g_proxy_resolver_is_supported (GProxyResolver *resolver)
     116                 :            : {
     117                 :            :   GProxyResolverInterface *iface;
     118                 :            : 
     119                 :         12 :   g_return_val_if_fail (G_IS_PROXY_RESOLVER (resolver), FALSE);
     120                 :            : 
     121                 :         12 :   iface = G_PROXY_RESOLVER_GET_IFACE (resolver);
     122                 :            : 
     123                 :         12 :   return (* iface->is_supported) (resolver);
     124                 :            : }
     125                 :            : 
     126                 :            : /**
     127                 :            :  * g_proxy_resolver_lookup:
     128                 :            :  * @resolver: a #GProxyResolver
     129                 :            :  * @uri: a URI representing the destination to connect to
     130                 :            :  * @cancellable: (nullable): a #GCancellable, or %NULL
     131                 :            :  * @error: return location for a #GError, or %NULL
     132                 :            :  *
     133                 :            :  * Looks into the system proxy configuration to determine what proxy,
     134                 :            :  * if any, to use to connect to @uri. The returned proxy URIs are of
     135                 :            :  * the form `<protocol>://[user[:password]@]host[:port]` or
     136                 :            :  * `direct://`, where <protocol> could be http, rtsp, socks
     137                 :            :  * or other proxying protocol.
     138                 :            :  *
     139                 :            :  * If you don't know what network protocol is being used on the
     140                 :            :  * socket, you should use `none` as the URI protocol.
     141                 :            :  * In this case, the resolver might still return a generic proxy type
     142                 :            :  * (such as SOCKS), but would not return protocol-specific proxy types
     143                 :            :  * (such as http).
     144                 :            :  *
     145                 :            :  * `direct://` is used when no proxy is needed.
     146                 :            :  * Direct connection should not be attempted unless it is part of the
     147                 :            :  * returned array of proxies.
     148                 :            :  *
     149                 :            :  * Returns: (transfer full) (array zero-terminated=1): A
     150                 :            :  *               NULL-terminated array of proxy URIs. Must be freed
     151                 :            :  *               with g_strfreev().
     152                 :            :  *
     153                 :            :  * Since: 2.26
     154                 :            :  */
     155                 :            : gchar **
     156                 :        298 : g_proxy_resolver_lookup (GProxyResolver  *resolver,
     157                 :            :                          const gchar     *uri,
     158                 :            :                          GCancellable    *cancellable,
     159                 :            :                          GError         **error)
     160                 :            : {
     161                 :            :   GProxyResolverInterface *iface;
     162                 :            :   gchar **proxy_uris;
     163                 :            : 
     164                 :        298 :   g_return_val_if_fail (G_IS_PROXY_RESOLVER (resolver), NULL);
     165                 :        298 :   g_return_val_if_fail (uri != NULL, NULL);
     166                 :            : 
     167         [ +  + ]:        298 :   if (!g_uri_is_valid (uri, G_URI_FLAGS_NONE, NULL))
     168                 :            :     {
     169                 :          2 :       g_set_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
     170                 :            :                    "Invalid URI ā€˜%sā€™", uri);
     171                 :          2 :       return NULL;
     172                 :            :     }
     173                 :            : 
     174                 :        296 :   iface = G_PROXY_RESOLVER_GET_IFACE (resolver);
     175                 :            : 
     176                 :        296 :   proxy_uris = (* iface->lookup) (resolver, uri, cancellable, error);
     177   [ -  +  -  - ]:        296 :   if (proxy_uris == NULL && error != NULL)
     178                 :          0 :     g_assert (*error != NULL);
     179                 :        296 :   return proxy_uris;
     180                 :            : }
     181                 :            : 
     182                 :            : /**
     183                 :            :  * g_proxy_resolver_lookup_async:
     184                 :            :  * @resolver: a #GProxyResolver
     185                 :            :  * @uri: a URI representing the destination to connect to
     186                 :            :  * @cancellable: (nullable): a #GCancellable, or %NULL
     187                 :            :  * @callback: (scope async): callback to call after resolution completes
     188                 :            :  * @user_data: data for @callback
     189                 :            :  *
     190                 :            :  * Asynchronous lookup of proxy. See g_proxy_resolver_lookup() for more
     191                 :            :  * details.
     192                 :            :  *
     193                 :            :  * Since: 2.26
     194                 :            :  */
     195                 :            : void
     196                 :        234 : g_proxy_resolver_lookup_async (GProxyResolver      *resolver,
     197                 :            :                                const gchar         *uri,
     198                 :            :                                GCancellable        *cancellable,
     199                 :            :                                GAsyncReadyCallback  callback,
     200                 :            :                                gpointer             user_data)
     201                 :            : {
     202                 :            :   GProxyResolverInterface *iface;
     203                 :        234 :   GError *error = NULL;
     204                 :            : 
     205                 :        236 :   g_return_if_fail (G_IS_PROXY_RESOLVER (resolver));
     206                 :        234 :   g_return_if_fail (uri != NULL);
     207                 :            : 
     208         [ +  + ]:        234 :   if (!g_uri_is_valid (uri, G_URI_FLAGS_NONE, NULL))
     209                 :            :     {
     210                 :          2 :       g_set_error (&error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
     211                 :            :                    "Invalid URI ā€˜%sā€™", uri);
     212                 :          2 :       g_task_report_error (resolver, callback, user_data,
     213                 :            :                            g_proxy_resolver_lookup_async,
     214                 :          2 :                            g_steal_pointer (&error));
     215                 :          2 :       return;
     216                 :            :     }
     217                 :            : 
     218                 :        232 :   iface = G_PROXY_RESOLVER_GET_IFACE (resolver);
     219                 :            : 
     220                 :        232 :   (* iface->lookup_async) (resolver, uri, cancellable, callback, user_data);
     221                 :            : }
     222                 :            : 
     223                 :            : /**
     224                 :            :  * g_proxy_resolver_lookup_finish:
     225                 :            :  * @resolver: a #GProxyResolver
     226                 :            :  * @result: the result passed to your #GAsyncReadyCallback
     227                 :            :  * @error: return location for a #GError, or %NULL
     228                 :            :  *
     229                 :            :  * Call this function to obtain the array of proxy URIs when
     230                 :            :  * g_proxy_resolver_lookup_async() is complete. See
     231                 :            :  * g_proxy_resolver_lookup() for more details.
     232                 :            :  *
     233                 :            :  * Returns: (transfer full) (array zero-terminated=1): A
     234                 :            :  *               NULL-terminated array of proxy URIs. Must be freed
     235                 :            :  *               with g_strfreev().
     236                 :            :  *
     237                 :            :  * Since: 2.26
     238                 :            :  */
     239                 :            : gchar **
     240                 :        234 : g_proxy_resolver_lookup_finish (GProxyResolver     *resolver,
     241                 :            :                                 GAsyncResult       *result,
     242                 :            :                                 GError            **error)
     243                 :            : {
     244                 :            :   GProxyResolverInterface *iface;
     245                 :            :   gchar **proxy_uris;
     246                 :            : 
     247                 :        234 :   g_return_val_if_fail (G_IS_PROXY_RESOLVER (resolver), NULL);
     248                 :            : 
     249         [ +  + ]:        234 :   if (g_async_result_is_tagged (result, g_proxy_resolver_lookup_async))
     250                 :          2 :     return g_task_propagate_pointer (G_TASK (result), error);
     251                 :            : 
     252                 :        232 :   iface = G_PROXY_RESOLVER_GET_IFACE (resolver);
     253                 :            : 
     254                 :        232 :   proxy_uris = (* iface->lookup_finish) (resolver, result, error);
     255   [ +  +  +  - ]:        232 :   if (proxy_uris == NULL && error != NULL)
     256                 :          1 :     g_assert (*error != NULL);
     257                 :        232 :   return proxy_uris;
     258                 :            : }

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