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/** BEGIN COPYRIGHT BLOCK
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Additional permission under GPLv3 section 7:
*
* In the following paragraph, "GPL" means the GNU General Public
* License, version 3 or any later version, and "Non-GPL Code" means
* code that is governed neither by the GPL nor a license
* compatible with the GPL.
*
* You may link the code of this Program with Non-GPL Code and convey
* linked combinations including the two, provided that such Non-GPL
* Code only links to the code of this Program through those well
* defined interfaces identified in the file named EXCEPTION found in
* the source code files (the "Approved Interfaces"). The files of
* Non-GPL Code may instantiate templates or use macros or inline
* functions from the Approved Interfaces without causing the resulting
* work to be covered by the GPL. Only the copyright holders of this
* Program may make changes or additions to the list of Approved
* Interfaces.
*
* Authors:
* Simo Sorce <ssorce@redhat.com>
*
* Copyright (C) 2011 Red Hat, Inc.
* All rights reserved.
* END COPYRIGHT BLOCK **/
#include "ipa_cldap.h"
#include "util.h"
Slapi_PluginDesc ipa_cldap_desc = {
IPA_CLDAP_PLUGIN_NAME,
"FreeIPA project",
"FreeIPA/3.0",
IPA_CLDAP_PLUGIN_DESC
};
static int ipa_cldap_start(Slapi_PBlock *pb)
{
struct ipa_cldap_ctx *ctx;
int ret;
ret = slapi_pblock_get(pb, SLAPI_PLUGIN_PRIVATE, &ctx);
if (ret) {
LOG_FATAL("No plugin context ?!\n");
return -1;
}
ret = pthread_create(&ctx->tid, NULL, ipa_cldap_worker, ctx);
if (ret) {
LOG_FATAL("Failed to create worker thread\n");
return -1;
}
LOG("Plugin statrup completed.\n");
return 0;
}
static int ipa_cldap_stop(Slapi_PBlock *pb)
{
struct ipa_cldap_ctx *ctx;
void *retval;
int ret;
ret = slapi_pblock_get(pb, SLAPI_PLUGIN_PRIVATE, &ctx);
if (ret) {
LOG_FATAL("No plugin context ?!\n");
return -1;
}
/* send stop signal to terminate worker thread */
do {
ret = write(ctx->stopfd[1], "", 1);
} while (ret == -1 && errno == EINTR);
close(ctx->stopfd[1]);
ret = pthread_join(ctx->tid, &retval);
if (ret) {
LOG_FATAL("Failed to stop worker thread\n");
return -1;
}
LOG("Plugin shutdown completed.\n");
return 0;
}
static int ipa_cldap_init_service(Slapi_PBlock *pb,
struct ipa_cldap_ctx **cldap_ctx)
{
struct ipa_cldap_ctx *ctx;
struct sockaddr_in6 addr;
Slapi_Entry *e;
int flags;
int val;
int ret;
ctx = calloc(1, sizeof(struct ipa_cldap_ctx));
if (!ctx) {
return ENOMEM;
}
ctx->sd = -1;
ret = slapi_pblock_get(pb, SLAPI_PLUGIN_IDENTITY, &ctx->plugin_id);
if ((ret != 0) || (NULL == ctx->plugin_id)) {
LOG_FATAL("Could not get identity or identity was NULL\n");
if (ret == 0) {
ret = -1;
}
goto done;
}
slapi_pblock_get(pb, SLAPI_PLUGIN_CONFIG_ENTRY, &e);
if (!e) {
LOG_FATAL("Plugin configuration not found!\n");
ret = -1;
goto done;
}
ctx->base_dn = slapi_entry_attr_get_charptr(e, "nsslapd-basedn");
if (!ctx->base_dn) {
LOG_FATAL("Plugin configuration not found!\n");
ret = -1;
goto done;
}
/* create a stop pipe so the main DS thread can interrupt the poll()
* of the worker thread at any time and cause the worker thread to
* immediately exit without waiting for timeouts or such */
ret = pipe(ctx->stopfd);
if (ret != 0) {
LOG_FATAL("Failed to stop pipe\n");
ret = EIO;
goto done;
}
ctx->sd = socket(PF_INET6, SOCK_DGRAM, 0);
if (ctx->sd == -1) {
LOG_FATAL("Failed to create IPv6 socket: IPv6 support in kernel "
"is required\n");
ret = EIO;
goto done;
}
val = 1;
ret = setsockopt(ctx->sd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
if (ret == -1) {
ret = errno;
LOG("Failed to make socket immediately reusable (%d, %s)\n",
ret, strerror(ret));
}
memset(&addr, 0, sizeof(addr));
addr.sin6_family = AF_INET6;
addr.sin6_port = htons(CLDAP_PORT);
ret = bind(ctx->sd, (struct sockaddr *)&addr, sizeof(addr));
if (ret == -1) {
ret = errno;
LOG_FATAL("Failed to bind socket (%d, %s)\n", ret, strerror(ret));
goto done;
}
flags = fcntl(ctx->sd, F_GETFL);
if ((flags & O_NONBLOCK) == 0) {
ret = fcntl(ctx->sd, F_SETFL, flags | O_NONBLOCK);
if (ret == -1) {
ret = errno;
LOG_FATAL("Failed to set socket to non-blocking\n");
goto done;
}
}
done:
if (ret) {
if (ctx->sd != -1) {
close(ctx->sd);
}
free(ctx);
} else {
*cldap_ctx = ctx;
}
return ret;
}
static int ipa_cldap_post_init(Slapi_PBlock *pb)
{
return 0;
}
/* Initialization function */
int ipa_cldap_init(Slapi_PBlock *pb)
{
struct ipa_cldap_ctx *cldap_ctx = NULL;
int ret;
ret = ipa_cldap_init_service(pb, &cldap_ctx);
if (ret) {
LOG_FATAL("Failed to initialize CLDAP Plugin\n");
/* do not cause DS to stop, simply do nothing */
return 0;
}
/* Register the plug-in */
ret = slapi_pblock_set(pb, SLAPI_PLUGIN_VERSION, SLAPI_PLUGIN_VERSION_03);
if (!ret) {
ret = slapi_pblock_set(pb, SLAPI_PLUGIN_DESCRIPTION, &ipa_cldap_desc);
}
if (!ret) {
ret = slapi_pblock_set(pb, SLAPI_PLUGIN_START_FN, &ipa_cldap_start);
}
if (!ret) {
ret = slapi_pblock_set(pb, SLAPI_PLUGIN_CLOSE_FN, &ipa_cldap_stop);
}
if (!ret) {
ret = slapi_pblock_set(pb, SLAPI_PLUGIN_PRIVATE, cldap_ctx);
}
if (ret) {
LOG_FATAL("Failed to initialize plug-in\n" );
return -1;
}
slapi_register_plugin("postoperation", 1,
"ipa_cldap_post_init",
ipa_cldap_post_init,
"CLDAP post ops", NULL,
cldap_ctx->plugin_id);
return 0;
}
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