connectivity/source/drivers/evoab2/EApi.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19 #include <rtl/ustring.hxx>
  20 #include <osl/module.hxx>
  21 #define  DECLARE_FN_POINTERS 1
  22 #include "EApi.h"
  23 static const char *eBookLibNames[] = {
  24     "libebook-1.2.so.20", // evolution-data-server 3.33.2+
  25     "libebook-1.2.so.19", // evolution-data-server 3.24+
  26     "libebook-1.2.so.16",
  27     "libebook-1.2.so.15",
  28     "libebook-1.2.so.14", // bumped again (evolution-3.6)
  29     "libebook-1.2.so.13", // bumped again (evolution-3.4)
  30     "libebook-1.2.so.12", // bumped again
  31     "libebook-1.2.so.10", // bumped again
  32     "libebook-1.2.so.9",  // evolution-2.8
  33     "libebook-1.2.so.5",  // evolution-2.4 and 2.6+
  34     "libebook-1.2.so.3",  // evolution-2.2
  35     "libebook.so.8"       // evolution-2.0
  36 };
  37
  38 typedef void (*SymbolFunc) ();
  39
  40 #define SYM_MAP(a) { #a, reinterpret_cast<SymbolFunc *>(&a) }
  41
  42 namespace {
  43
  44 struct ApiMap
  45 {
  46     const char *sym_name;
  47     SymbolFunc *ref_value;
  48 };
  49
  50 }
  51
  52 const ApiMap aCommonApiMap[] =
  53 {
  54     SYM_MAP( eds_check_version ),
  55     SYM_MAP( e_contact_field_name ),
  56     SYM_MAP( e_contact_get ),
  57     SYM_MAP( e_contact_get_type ),
  58     SYM_MAP( e_contact_field_id ),
  59     SYM_MAP( e_book_new ),
  60     SYM_MAP( e_book_open ),
  61     SYM_MAP( e_book_get_source ),
  62     SYM_MAP( e_book_get_contacts ),
  63     SYM_MAP( e_book_query_field_test ),
  64     SYM_MAP( e_book_query_and ),
  65     SYM_MAP( e_book_query_or ),
  66     SYM_MAP( e_book_query_not ),
  67     SYM_MAP( e_book_query_ref ),
  68     SYM_MAP( e_book_query_unref ),
  69     SYM_MAP( e_book_query_from_string ),
  70     SYM_MAP( e_book_query_to_string ),
  71     SYM_MAP( e_book_query_field_exists )
  72 };
  73
  74 //< 3.6 api
  75 const ApiMap aOldApiMap[] =
  76 {
  77     SYM_MAP( e_book_get_addressbooks ),
  78     SYM_MAP( e_book_get_uri ),
  79     SYM_MAP( e_book_authenticate_user ),
  80     SYM_MAP( e_source_group_peek_base_uri),
  81     SYM_MAP( e_source_peek_name ),
  82     SYM_MAP( e_source_get_property ),
  83     SYM_MAP( e_source_list_peek_groups ),
  84     SYM_MAP( e_source_group_peek_sources )
  85 };
  86
  87 //>= 3.6 api
  88 const ApiMap aNewApiMap[] =
  89 {
  90     SYM_MAP( e_source_registry_list_sources ),
  91     SYM_MAP( e_source_registry_new_sync ),
  92     SYM_MAP( e_source_has_extension ),
  93     SYM_MAP( e_source_get_extension ),
  94     SYM_MAP( e_source_backend_get_backend_name ),
  95     SYM_MAP( e_source_get_display_name ),
  96     SYM_MAP( e_source_get_uid ),
  97     SYM_MAP( e_source_registry_ref_source),
  98     SYM_MAP( e_client_open_sync ),
  99     SYM_MAP( e_client_get_source ),
 100     SYM_MAP( e_book_client_get_contacts_sync ),
 101     SYM_MAP( e_client_util_free_object_slist )
 102 };
 103
 104 //== indirect read access (3.6 only)
 105 const ApiMap aClientApiMap36[] =
 106 {
 107     SYM_MAP( e_book_client_new )
 108 };
 109
 110 //>= direct read access API (>= 3.8)
 111 const ApiMap aClientApiMap38[] =
 112 {
 113     SYM_MAP( e_book_client_connect_direct_sync )
 114 };
 115
 116 #undef SYM_MAP
 117
 118 template<size_t N> static bool
 119 tryLink( osl::Module &rModule, const char *pName, const ApiMap (&pMap)[N])
 120 {
 121     for (size_t i = 0; i < N; ++i)
 122     {
 123         SymbolFunc aMethod = reinterpret_cast<SymbolFunc>(
 124             rModule.getFunctionSymbol(OUString::createFromAscii(pMap[i].sym_name)));
 125         if( !aMethod )
 126         {
 127             fprintf( stderr, "Warning: missing symbol '%s' in '%s'\n",
 128                  pMap[ i ].sym_name, pName );
 129             return false;
 130         }
 131         *pMap[ i ].ref_value = aMethod;
 132     }
 133     return true;
 134 }
 135
 136 bool EApiInit()
 137 {
 138     for( guint j = 0; j < G_N_ELEMENTS( eBookLibNames ); j++ )
 139     {
 140         osl::Module aModule(OUString::createFromAscii(eBookLibNames[j]), SAL_LOADMODULE_DEFAULT);
 141
 142         if (!aModule.is())
 143             continue;
 144
 145         if (tryLink( aModule, eBookLibNames[ j ], aCommonApiMap))
 146         {
 147             if (eds_check_version( 3, 6, 0 ) != nullptr)
 148             {
 149                 if (tryLink( aModule, eBookLibNames[ j ], aOldApiMap))
 150                 {
 151                     aModule.release();
 152                     return true;
 153                 }
 154             }
 155             else if (tryLink( aModule, eBookLibNames[ j ], aNewApiMap))
 156             {
 157                 if (eds_check_version( 3, 7, 6 ) != nullptr)
 158                 {
 159                     if (tryLink( aModule, eBookLibNames[ j ], aClientApiMap36))
 160                     {
 161                         aModule.release();
 162                         return true;
 163                     }
 164                 }
 165                 else
 166                 {
 167                     if (tryLink( aModule, eBookLibNames[ j ], aClientApiMap38))
 168                     {
 169                         aModule.release();
 170                         return true;
 171                     }
 172                 }
 173             }
 174         }
 175     }
 176     fprintf( stderr, "Can find no compliant libebook client libraries\n" );
 177     return false;
 178 }
 179
 180 ESourceRegistry *get_e_source_registry()
 181 {
 182     static ESourceRegistry *theInstance = e_source_registry_new_sync(nullptr, nullptr);
 183     return theInstance;
 184 }
 185
 186 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */