174 lines
5.0 KiB
C++
174 lines
5.0 KiB
C++
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla IPC.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Darin Fisher <darin@netscape.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "prlink.h"
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#include "prio.h"
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#include "plstr.h"
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#include "ipcConfig.h"
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#include "ipcModuleReg.h"
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#include "ipcModule.h"
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#include "ipcCommandModule.h"
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#include "ipcd.h"
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struct ipcModuleRegEntry
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{
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nsID id;
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ipcModule *module;
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PRLibrary *lib;
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};
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#define IPC_MAX_MODULE_COUNT 64
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static ipcModuleRegEntry ipcModules[IPC_MAX_MODULE_COUNT];
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static int ipcModuleCount;
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static PRStatus
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AddModule(const nsID &id, ipcModule *module, PRLibrary *lib)
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{
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if (ipcModuleCount == IPC_MAX_MODULE_COUNT) {
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printf("### too many modules!\n");
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return PR_FAILURE;
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}
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ipcModules[ipcModuleCount].id = id;
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ipcModules[ipcModuleCount].module = module;
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ipcModules[ipcModuleCount].lib = lib;
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++ipcModuleCount;
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return PR_SUCCESS;
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}
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static void
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InitModuleFromLib(const char *modulesDir, const char *fileName)
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{
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printf("### InitModuleFromLib [%s]\n", fileName);
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int dLen = strlen(modulesDir);
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int fLen = strlen(fileName);
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char *buf = (char *) malloc(dLen + 1 + fLen + 1);
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memcpy(buf, modulesDir, dLen);
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buf[dLen] = IPC_PATH_SEP_CHAR;
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memcpy(buf + dLen + 1, fileName, fLen);
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buf[dLen + 1 + fLen] = '\0';
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PRLibrary *lib = PR_LoadLibrary(buf);
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if (lib) {
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ipcGetModuleListFunc func =
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(ipcGetModuleListFunc) PR_FindFunctionSymbol(lib, "IPC_GetModuleList");
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if (func) {
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ipcModule **modules = func();
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if (modules) {
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while (*modules) {
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AddModule((*modules)->ID(), *modules, PR_LoadLibrary(buf));
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++modules;
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}
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}
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}
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PR_UnloadLibrary(lib);
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}
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free(buf);
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}
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//-----------------------------------------------------------------------------
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// ipcModuleReg API
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//-----------------------------------------------------------------------------
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//
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// search for a module registered under the specified id
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//
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ipcModule *
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IPC_GetModuleByID(const nsID &id)
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{
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for (int i=0; i<ipcModuleCount; ++i) {
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ipcModuleRegEntry &entry = ipcModules[i];
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if (entry.id.Equals(id))
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return entry.module;
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}
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return NULL;
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}
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void
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IPC_InitModuleReg(const char *modulesDir)
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{
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ipcModule *module = IPC_GetCommandModule();
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AddModule(module->ID(), module, NULL);
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if (modulesDir) {
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printf("### loading libraries in %s\n", modulesDir);
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//
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// scan directory for IPC modules
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//
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PRDir *dir = PR_OpenDir(modulesDir);
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if (dir) {
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PRDirEntry *ent;
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while ((ent = PR_ReadDir(dir, PR_SKIP_BOTH)) != NULL) {
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//
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// locate extension, and check if dynamic library
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//
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char *p = strrchr(ent->name, '.');
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if (p && PL_strcasecmp(p, MOZ_DLL_SUFFIX) == 0)
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InitModuleFromLib(modulesDir, ent->name);
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}
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PR_CloseDir(dir);
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}
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}
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}
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void
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IPC_ShutdownModuleReg()
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{
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//
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// shutdown modules in reverse order
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//
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for (int i = ipcModuleCount - 1; i >= 0; --i) {
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ipcModuleRegEntry &entry = ipcModules[i];
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if (entry.module)
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entry.module->Shutdown();
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if (entry.lib)
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PR_UnloadLibrary(entry.lib);
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}
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// memset(ipcModules, 0, sizeof(ipcModules));
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ipcModuleCount = 0;
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}
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