pcs 98/02/03 02:41:35
Added: src/modules/standard mod_so.c Log: By popular demand, here is the mod_so.c file, which should replace mod_dld.c. It will be marked as experimental in Configuration.tmpl. Revision Changes Path 1.1 apache-1.3/src/modules/standard/mod_so.c Index: mod_so.c =================================================================== /* ==================================================================== * Copyright (c) 1995-1997 The Apache Group. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. All advertising materials mentioning features or use of this * software must display the following acknowledgment: * "This product includes software developed by the Apache Group * for use in the Apache HTTP server project (http://www.apache.org/)." * * 4. The names "Apache Server" and "Apache Group" must not be used to * endorse or promote products derived from this software without * prior written permission. For written permission, please contact * [EMAIL PROTECTED] * * 5. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by the Apache Group * for use in the Apache HTTP server project (http://www.apache.org/)." * * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE APACHE GROUP OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Group and was originally based * on public domain software written at the National Center for * Supercomputing Applications, University of Illinois, Urbana-Champaign. * For more information on the Apache Group and the Apache HTTP server * project, please see <http://www.apache.org/>. * */ /* How to create .so files on various platforms: FreeBSD: "gcc -fpic" to compile "ld -Bshareable" to link See for instructions on more platforms: http://developer.netscape.com/library/documentation/enterprise/unix/svrplug.htm#1013807 */ #include "httpd.h" #include "http_config.h" #include "http_log.h" /* Os-specific stuff that goes in conf.h */ #if defined(LINUX) || defined(__FreeBSD__) || defined(SOLARIS) || \ defined(__bsdi__) || defined(IRIX) #define HAS_DLFCN #endif #if defined(__FreeBSD__) #define NEED_RTLD_LAZY #define NEED_UNDERSCORE_SYM #endif /* OSes that don't support dlopen */ #if defined(UW) || defined(ULTRIX) #define NO_DL #endif /* Start of real module */ #ifdef HAS_DLFCN #include <dlfcn.h> #else #define NEED_RTLD_LAZY void * dlopen (__const char * __filename, int __flag); __const char * dlerror (void); void * dlsym (void *, __const char *); int dlclose (void *); #endif #ifdef NEED_RTLD_LAZY #define RTLD_LAZY 1 #endif /* * The hard part of implementing LoadModule is deciding what to do about * rereading the config files. This proof-of-concept implementation takes the * cheap way out: we only actually load the modules the first time through. */ static int been_there_done_that = 0; /* Loaded the modules yet? */ static int have_symbol_table = 0; #ifndef NO_DLOPEN static const char *load_module (cmd_parms *cmd, void *dummy, char *modname, char *filename) { void *modhandle; module *modp; const char *szModuleFile=server_root_relative(cmd->pool, filename); if (been_there_done_that) return NULL; if (!(modhandle = dlopen(szModuleFile, RTLD_NOW))) { const char *my_error = dlerror(); return pstrcat (cmd->pool, "Cannot load ", szModuleFile, " into server: ", my_error, ":", dlerror(), NULL); } /* If I knew what the correct cast is here, I'd be happy. But * I don't. So I'll use (void *). It works. */ aplog_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, NULL, "loaded module %s", modname); #ifdef NEED_UNDERSCORE_SYM modname = pstrcat(cmd->pool, "_", modname, NULL); #endif if (!(modp = (module *)(dlsym (modhandle, modname)))) { return pstrcat (cmd->pool, "Can't find module ", modname, " in file ", filename, ":", dlerror(), NULL); } add_module (modp); /* Alethea Patch (rws,djw2) - need to run configuration functions in new modules */ if (modp->create_server_config) ((void**)cmd->server->module_config)[modp->module_index]= (*modp->create_server_config)(cmd->pool, cmd->server); if (modp->create_dir_config) ((void**)cmd->server->lookup_defaults)[modp->module_index]= (*modp->create_dir_config)(cmd->pool, NULL); return NULL; } static const char *load_file (cmd_parms *cmd, void *dummy, char *filename) { if (been_there_done_that) return NULL; if (!dlopen(server_root_relative(cmd->pool, filename), 1)) return pstrcat (cmd->pool, "Cannot load ", filename, " into server", NULL); return NULL; } #else static const char *load_file(cmd_parms *cmd, void *dummy, char *filename) { if(!been_there_done_that) fprintf(stderr, "WARNING: LoadFile not supported\n"); return NULL; } static const char *load_module(cmd_parms *cmd, void *dummy, char *modname, char *filename) { if(!been_there_done_that) fprintf(stderr, "WARNING: LoadModule not supported\n"); return NULL; } #endif static void check_loaded_modules (server_rec *dummy, pool *p) { if (been_there_done_that) return; been_there_done_that = 1; } command_rec so_cmds[] = { { "LoadModule", load_module, NULL, RSRC_CONF, TAKE2, "a module name, and the name of a file to load it from"}, { "LoadFile", load_file, NULL, RSRC_CONF, ITERATE, "files or libraries to link into the server at runtime"}, { NULL } }; module so_module = { STANDARD_MODULE_STUFF, check_loaded_modules, /* initializer */ NULL, /* create per-dir config */ NULL, /* merge per-dir config */ NULL, /* server config */ NULL, /* merge server config */ so_cmds, /* command table */ NULL, /* handlers */ NULL, /* filename translation */ NULL, /* check_user_id */ NULL, /* check auth */ NULL, /* check access */ NULL, /* type_checker */ NULL, /* logger */ NULL /* header parser */ };
