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/*****************************************************************************
* Copyright (C) 2011-13 Qualys, Inc
* Copyright (C) 2013 The Apache Software Foundation
*
* Licensed to the Apache Software Foundation (ASF) 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 *)"Apache Software Foundation";
info.support_email = (char *)"dev@trafficserver.apache.org";
if (TSPluginRegister(&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", lib);
} else {
TSError("[libloader] failed to load %s: %s\n", lib, dlerror());
}
}
return;
}
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