mirror of
https://github.com/FreeRDP/FreeRDP.git
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libfreerdp-core: started porting extension plugin interface
This commit is contained in:
Marc-André Moreau
parent
c8735d720e
commit
0043b16472
@ -20,14 +20,14 @@
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#ifndef __RDP_EXTENSION_H
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#define __RDP_EXTENSION_H
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#include <freerdp/freerdp.h>
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#include <freerdp/api.h>
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#include <freerdp/types.h>
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#include <freerdp/freerdp.h>
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/* Extensions ought to check for it to ensure compatibility */
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#define RDPEXT_API 1
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#define FREERDP_EXT_API 1
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#define RDPEXT_EXPORT_FUNC_NAME "FreeRDPExtensionEntry"
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#define FREERDP_EXT_EXPORT_FUNC_NAME "FreeRDPExtensionEntry"
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typedef struct rdp_ext_plugin rdpExtPlugin;
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@ -52,6 +52,7 @@ struct _FREERDP_EXTENSION_ENTRY_POINTS
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PREGISTERPOSTCONNECTHOOK pRegisterPostConnectHook;
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void* data;
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};
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typedef struct _FREERDP_EXTENSION_ENTRY_POINTS FREERDP_EXTENSION_ENTRY_POINTS;
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typedef FREERDP_EXTENSION_ENTRY_POINTS* PFREERDP_EXTENSION_ENTRY_POINTS;
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@ -24,6 +24,8 @@ include_directories(${ZLIB_INCLUDE_DIRS})
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set(LIBFREERDP_CORE_SRCS
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activation.c
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activation.h
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extension.c
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extension.h
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ber.c
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ber.h
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gcc.c
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202
libfreerdp-core/extension.c
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202
libfreerdp-core/extension.c
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@ -0,0 +1,202 @@
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/**
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* FreeRDP: A Remote Desktop Protocol Client
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* FreeRDP Extension Plugin Interface
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*
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* Copyright 2010-2011 Vic Lee
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* Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <freerdp/freerdp.h>
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#include <freerdp/utils/memory.h>
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#include "rdp.h"
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#include "extension.h"
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#ifdef _WIN32
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#define DLOPEN(f) LoadLibraryA(f)
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#define DLSYM(f, n) GetProcAddress(f, n)
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#define DLCLOSE(f) FreeLibrary(f)
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#define PATH_SEPARATOR '\\'
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#define PLUGIN_EXT "dll"
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#else
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#include <dlfcn.h>
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#define DLOPEN(f) dlopen(f, RTLD_LOCAL | RTLD_LAZY)
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#define DLSYM(f, n) dlsym(f, n)
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#define DLCLOSE(f) dlclose(f)
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#define PATH_SEPARATOR '/'
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#define PLUGIN_EXT "so"
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#endif
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static uint32 FREERDP_CC freerdp_ext_register_extension(rdpExtPlugin* plugin)
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{
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rdpExt* ext = (rdpExt*) plugin->ext;
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if (ext->num_plugins >= FREERDP_EXT_MAX_COUNT)
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{
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printf("freerdp_ext_register_extension: maximum number of plugins reached.\n");
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return 1;
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}
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ext->plugins[ext->num_plugins++] = plugin;
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return 0;
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}
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static uint32 FREERDP_CC freerdp_ext_register_pre_connect_hook(rdpExtPlugin* plugin, PFREERDP_EXTENSION_HOOK hook)
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{
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rdpExt* ext = (rdpExt*) plugin->ext;
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if (ext->num_pre_connect_hooks >= FREERDP_EXT_MAX_COUNT)
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{
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printf("freerdp_ext_register_pre_connect_hook: maximum plugin reached.\n");
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return 1;
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}
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ext->pre_connect_hooks[ext->num_pre_connect_hooks] = hook;
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ext->pre_connect_hooks_instances[ext->num_pre_connect_hooks] = plugin;
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ext->num_pre_connect_hooks++;
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return 0;
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}
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static uint32 FREERDP_CC freerdp_ext_register_post_connect_hook(rdpExtPlugin* plugin, PFREERDP_EXTENSION_HOOK hook)
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{
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rdpExt* ext = (rdpExt*) plugin->ext;
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if (ext->num_post_connect_hooks >= FREERDP_EXT_MAX_COUNT)
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{
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printf("freerdp_ext_register_post_connect_hook: maximum plugin reached.\n");
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return 1;
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}
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ext->post_connect_hooks[ext->num_post_connect_hooks] = hook;
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ext->post_connect_hooks_instances[ext->num_post_connect_hooks] = plugin;
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ext->num_post_connect_hooks++;
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return 0;
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}
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static int freerdp_ext_load_plugins(rdpExt* ext)
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{
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int i;
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void* han;
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char path[256];
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rdpSettings* settings;
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PFREERDP_EXTENSION_ENTRY entry;
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FREERDP_EXTENSION_ENTRY_POINTS entryPoints;
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settings = ext->instance->settings;
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entryPoints.ext = ext;
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entryPoints.pRegisterExtension = freerdp_ext_register_extension;
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entryPoints.pRegisterPreConnectHook = freerdp_ext_register_pre_connect_hook;
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entryPoints.pRegisterPostConnectHook = freerdp_ext_register_post_connect_hook;
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for (i = 0; settings->extensions[i].name[0]; i++)
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{
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if (strchr(settings->extensions[i].name, PATH_SEPARATOR) == NULL)
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snprintf(path, sizeof(path), EXT_PATH "/%s." PLUGIN_EXT, settings->extensions[i].name);
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else
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snprintf(path, sizeof(path), "%s", settings->extensions[i].name);
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han = DLOPEN(path);
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printf("freerdp_ext_load_plugins: %s\n", path);
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if (han == NULL)
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{
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printf("freerdp_ext_load_plugins: failed to load %s\n", path);
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continue;
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}
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entry = (PFREERDP_EXTENSION_ENTRY) DLSYM(han, FREERDP_EXT_EXPORT_FUNC_NAME);
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if (entry == NULL)
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{
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DLCLOSE(han);
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printf("freerdp_ext_load_plugins: failed to find export function in %s\n", path);
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continue;
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}
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entryPoints.data = ext->instance->settings->extensions[i].data;
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if (entry(&entryPoints) != 0)
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{
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DLCLOSE(han);
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printf("freerdp_ext_load_plugins: %s entry returns error.\n", path);
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continue;
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}
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}
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return 0;
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}
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static int freerdp_ext_call_init(rdpExt* ext)
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{
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int i;
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for (i = 0; i < ext->num_plugins; i++)
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ext->plugins[i]->init(ext->plugins[i], ext->instance);
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return 0;
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}
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static int freerdp_ext_call_uninit(rdpExt* ext)
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{
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int i;
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for (i = 0; i < ext->num_plugins; i++)
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ext->plugins[i]->uninit(ext->plugins[i], ext->instance);
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return 0;
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}
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int freerdp_ext_pre_connect(rdpExt* ext)
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{
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int i;
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for (i = 0; i < ext->num_pre_connect_hooks; i++)
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ext->pre_connect_hooks[i](ext->pre_connect_hooks_instances[i], ext->instance);
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return 0;
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}
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int freerdp_ext_post_connect(rdpExt* ext)
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{
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int i;
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for (i = 0; i < ext->num_post_connect_hooks; i++)
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ext->post_connect_hooks[i](ext->post_connect_hooks_instances[i], ext->instance);
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return 0;
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}
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rdpExt* freerdp_ext_new(rdpRdp* rdp)
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{
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rdpExt* ext;
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ext = xnew(rdpExt);
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ext->instance = rdp->instance;
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freerdp_ext_load_plugins(ext);
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freerdp_ext_call_init(ext);
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return ext;
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}
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void freerdp_ext_free(rdpExt* ext)
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{
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freerdp_ext_call_uninit(ext);
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xfree(ext);
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}
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52
libfreerdp-core/extension.h
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52
libfreerdp-core/extension.h
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@ -0,0 +1,52 @@
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/**
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* FreeRDP: A Remote Desktop Protocol Client
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* FreeRDP Extension Plugin Interface
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*
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* Copyright 2010-2011 Vic Lee
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* Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __EXTENSION_H
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#define __EXTENSION_H
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#include <freerdp/freerdp.h>
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#include <freerdp/extension.h>
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#include "rdp.h"
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#define FREERDP_EXT_MAX_COUNT 16
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struct rdp_ext
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{
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freerdp* instance;
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rdpExtPlugin* plugins[FREERDP_EXT_MAX_COUNT];
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int num_plugins;
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PFREERDP_EXTENSION_HOOK pre_connect_hooks[FREERDP_EXT_MAX_COUNT];
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rdpExtPlugin* pre_connect_hooks_instances[FREERDP_EXT_MAX_COUNT];
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int num_pre_connect_hooks;
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PFREERDP_EXTENSION_HOOK post_connect_hooks[FREERDP_EXT_MAX_COUNT];
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rdpExtPlugin* post_connect_hooks_instances[FREERDP_EXT_MAX_COUNT];
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int num_post_connect_hooks;
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};
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typedef struct rdp_ext rdpExt;
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int freerdp_ext_pre_connect(rdpExt* ext);
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int freerdp_ext_post_connect(rdpExt* ext);
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rdpExt* freerdp_ext_new(rdpRdp* rdp);
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void freerdp_ext_free(rdpExt* ext);
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#endif /* __EXTENSION_H */
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