On Thu, 08 Dec 2011 19:27:53 -0000 (UTC) Igor Galić <i.ga...@brainsware.org> wrote:
> Hey folks, > > I wanted to kick off a discussion and maybe motivate someone to actually do > something about our plugins :) On the subject of plugins, there's a tiny support plugin I wrote to load the libraries for Ironbee, and that my boss has indicated he'd be happy to donate. Basic synopsis: an equivalent of httpd's LoadFile to load libraries and export their symbols. I'll attach it. Any interest? -- Nick Kew
/***************************************************************************** * Licensed to Qualys, Inc. (QUALYS) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * QUALYS licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *****************************************************************************/ /* libloader: load libraries, making all symbols exported * universally visible. Equivalent to LoadFile in HTTPD. * * Written for ironbee plugin, whose module architecture * is not compatible with trafficserver's plugins. * May be useful for other plugins with non-trivial * library dependencies. */ #include <dlfcn.h> #include <stdio.h> #include <stdlib.h> #include <ts/ts.h> typedef struct { void *handle; void *next; } link_handle; static link_handle *libs = NULL; static void unloadlibs(void) { link_handle *p = libs; while (p != NULL) { link_handle *next = p->next; dlclose(p->handle); TSfree(p); p = next; } libs = NULL; } void TSPluginInit(int argc, const char *argv[]) { int i; TSPluginRegistrationInfo info; info.plugin_name = (char *)"libloader"; info.vendor_name = (char *)"Qualys, Inc"; info.support_email = (char *)"ironbee-us...@lists.sourceforge.com"; if (TSPluginRegister(TS_SDK_VERSION_3_0, &info) != TS_SUCCESS) { TSError("[libloader] Plugin registration failed.\n"); return; } atexit(unloadlibs); for (i = 1; i < argc; ++i) { const char *lib = argv[i]; void *handle = dlopen(lib, RTLD_GLOBAL|RTLD_NOW); if (handle) { link_handle *l = TSmalloc(sizeof(link_handle)); l->handle = handle; l->next = libs; libs = l; TSDebug("libloader", " loaded %s\n", lib); } else { TSError("[libloader] failed to load %s: %s\n", lib, dlerror()); } } return; }
