delete resolv_conf_* files
This commit is contained in:
Andreas Steffen
@@ -1,192 +0,0 @@
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/*
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* Copyright (C) 2009 Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include "resolv_conf_handler.h"
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#include <unistd.h>
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#include <daemon.h>
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#include <utils/mutex.h>
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typedef struct private_resolv_conf_handler_t private_resolv_conf_handler_t;
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/**
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* Private data of an resolv_conf_handler_t object.
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*/
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struct private_resolv_conf_handler_t {
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/**
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* Public resolv_conf_handler_t interface.
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*/
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resolv_conf_handler_t public;
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/**
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* resolv.conf file to use
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*/
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char *file;
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/**
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* Mutex to access file exclusively
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*/
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mutex_t *mutex;
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};
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/**
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* Implementation of attribute_handler_t.handle
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*/
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static bool handle(private_resolv_conf_handler_t *this, ike_sa_t *ike_sa,
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configuration_attribute_type_t type, chunk_t data)
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{
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FILE *in, *out;
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char buf[1024];
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host_t *addr;
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int family;
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size_t len;
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bool handled = FALSE;
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switch (type)
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{
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case INTERNAL_IP4_DNS:
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family = AF_INET;
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break;
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case INTERNAL_IP6_DNS:
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family = AF_INET6;
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break;
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default:
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return FALSE;
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}
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this->mutex->lock(this->mutex);
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in = fopen(this->file, "r");
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/* allows us to stream from in to out */
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unlink(this->file);
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out = fopen(this->file, "w");
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if (out)
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{
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addr = host_create_from_chunk(family, data, 0);
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fprintf(out, "nameserver %H # by strongSwan, from %Y\n",
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addr, ike_sa->get_other_id(ike_sa));
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DBG1(DBG_IKE, "installing DNS server %H to %s", addr, this->file);
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addr->destroy(addr);
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handled = TRUE;
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/* copy rest of the file */
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if (in)
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{
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while ((len = fread(buf, 1, sizeof(buf), in)))
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{
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ignore_result(fwrite(buf, 1, len, out));
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}
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fclose(in);
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}
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fclose(out);
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}
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if (!handled)
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{
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DBG1(DBG_IKE, "adding DNS server failed", this->file);
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}
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this->mutex->unlock(this->mutex);
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return handled;
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}
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/**
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* Implementation of attribute_handler_t.release
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*/
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static void release(private_resolv_conf_handler_t *this, ike_sa_t *ike_sa,
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configuration_attribute_type_t type, chunk_t data)
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{
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FILE *in, *out;
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char line[1024], matcher[512], *pos;
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host_t *addr;
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int family;
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switch (type)
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{
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case INTERNAL_IP4_DNS:
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family = AF_INET;
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break;
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case INTERNAL_IP6_DNS:
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family = AF_INET6;
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break;
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default:
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return;
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}
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this->mutex->lock(this->mutex);
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in = fopen(this->file, "r");
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if (in)
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{
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/* allows us to stream from in to out */
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unlink(this->file);
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out = fopen(this->file, "w");
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if (out)
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{
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addr = host_create_from_chunk(family, data, 0);
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snprintf(matcher, sizeof(matcher),
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"nameserver %H # by strongSwan, from %Y\n",
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addr, ike_sa->get_other_id(ike_sa));
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/* copy all, but matching line */
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while ((pos = fgets(line, sizeof(line), in)))
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{
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if (strneq(line, matcher, strlen(matcher)))
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{
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DBG1(DBG_IKE, "removing DNS server %H from %s",
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addr, this->file);
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}
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else
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{
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fputs(line, out);
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}
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}
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addr->destroy(addr);
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fclose(out);
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}
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fclose(in);
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}
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this->mutex->unlock(this->mutex);
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}
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/**
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* Implementation of resolv_conf_handler_t.destroy.
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*/
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static void destroy(private_resolv_conf_handler_t *this)
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{
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this->mutex->destroy(this->mutex);
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free(this);
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}
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/**
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* See header
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*/
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resolv_conf_handler_t *resolv_conf_handler_create()
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{
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private_resolv_conf_handler_t *this = malloc_thing(private_resolv_conf_handler_t);
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this->public.handler.handle = (bool(*)(attribute_handler_t*, ike_sa_t*, configuration_attribute_type_t, chunk_t))handle;
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this->public.handler.release = (void(*)(attribute_handler_t*, ike_sa_t*, configuration_attribute_type_t, chunk_t))release;
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this->public.destroy = (void(*)(resolv_conf_handler_t*))destroy;
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this->mutex = mutex_create(MUTEX_TYPE_DEFAULT);
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this->file = lib->settings->get_str(lib->settings,
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"charon.plugins.resolv-conf.file", RESOLV_CONF);
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return &this->public;
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}
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@@ -1,49 +0,0 @@
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/*
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* Copyright (C) 2009 Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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/**
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* @defgroup resolv_conf_handler resolv_conf_handler
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* @{ @ingroup resolv_conf
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*/
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#ifndef RESOLV_CONF_HANDLER_H_
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#define RESOLV_CONF_HANDLER_H_
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#include <config/attributes/attribute_handler.h>
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typedef struct resolv_conf_handler_t resolv_conf_handler_t;
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/**
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* Handle DNS configuration attributes by mangling a resolv.conf file.
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*/
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struct resolv_conf_handler_t {
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/**
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* Implements the attribute_handler_t interface
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*/
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attribute_handler_t handler;
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/**
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* Destroy a resolv_conf_handler_t.
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*/
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void (*destroy)(resolv_conf_handler_t *this);
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};
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/**
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* Create a resolv_conf_handler instance.
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*/
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resolv_conf_handler_t *resolv_conf_handler_create();
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#endif /* RESOLV_CONF_HANDLER_ @}*/
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@@ -1,64 +0,0 @@
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/*
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* Copyright (C) 2009 Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include "resolv_conf_plugin.h"
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#include "resolv_conf_handler.h"
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#include <daemon.h>
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typedef struct private_resolv_conf_plugin_t private_resolv_conf_plugin_t;
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/**
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* private data of resolv_conf plugin
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*/
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struct private_resolv_conf_plugin_t {
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/**
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* implements plugin interface
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*/
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resolv_conf_plugin_t public;
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/**
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* The registerd DNS attribute handler
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*/
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resolv_conf_handler_t *handler;
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};
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/**
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* Implementation of plugin_t.destroy
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*/
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static void destroy(private_resolv_conf_plugin_t *this)
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{
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charon->attributes->remove_handler(charon->attributes,
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&this->handler->handler);
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this->handler->destroy(this->handler);
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free(this);
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}
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/*
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* see header file
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*/
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plugin_t *plugin_create()
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{
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private_resolv_conf_plugin_t *this = malloc_thing(private_resolv_conf_plugin_t);
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this->public.plugin.destroy = (void(*)(plugin_t*))destroy;
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this->handler = resolv_conf_handler_create();
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charon->attributes->add_handler(charon->attributes, &this->handler->handler);
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return &this->public.plugin;
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}
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@@ -1,47 +0,0 @@
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/*
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* Copyright (C) 2009 Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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/**
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* @defgroup resolv_conf resolv_conf
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* @ingroup cplugins
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*
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* @defgroup resolv_conf_plugin resolv_conf_plugin
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* @{ @ingroup resolv_conf
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*/
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#ifndef RESOLV_CONF_PLUGIN_H_
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#define RESOLV_CONF_PLUGIN_H_
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#include <plugins/plugin.h>
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typedef struct resolv_conf_plugin_t resolv_conf_plugin_t;
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/**
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* Plugin that writes received DNS servers in a resolv.conf file.
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*/
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struct resolv_conf_plugin_t {
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/**
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* implements plugin interface
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*/
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plugin_t plugin;
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};
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/**
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* Create a resolv_conf_plugin instance.
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*/
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plugin_t *plugin_create();
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#endif /** RESOLV_CONF_PLUGIN_H_ @}*/
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