diff options
Diffstat (limited to 'src/charon/plugins/resolve/resolv_conf_handler.c')
| -rw-r--r-- | src/charon/plugins/resolve/resolv_conf_handler.c | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/src/charon/plugins/resolve/resolv_conf_handler.c b/src/charon/plugins/resolve/resolv_conf_handler.c deleted file mode 100644 index 47e04416c..000000000 --- a/src/charon/plugins/resolve/resolv_conf_handler.c +++ /dev/null @@ -1,192 +0,0 @@ -/* - * Copyright (C) 2009 Martin Willi - * Hochschule fuer Technik Rapperswil - * - * 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 2 of the License, or (at your - * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. - * - * 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. - */ - -#include "resolv_conf_handler.h" - -#include <unistd.h> - -#include <daemon.h> -#include <utils/mutex.h> - -typedef struct private_resolv_conf_handler_t private_resolv_conf_handler_t; - -/** - * Private data of an resolv_conf_handler_t object. - */ -struct private_resolv_conf_handler_t { - - /** - * Public resolv_conf_handler_t interface. - */ - resolv_conf_handler_t public; - - /** - * resolv.conf file to use - */ - char *file; - - /** - * Mutex to access file exclusively - */ - mutex_t *mutex; -}; - -/** - * Implementation of attribute_handler_t.handle - */ -static bool handle(private_resolv_conf_handler_t *this, ike_sa_t *ike_sa, - configuration_attribute_type_t type, chunk_t data) -{ - FILE *in, *out; - char buf[1024]; - host_t *addr; - int family; - size_t len; - bool handled = FALSE; - - switch (type) - { - case INTERNAL_IP4_DNS: - family = AF_INET; - break; - case INTERNAL_IP6_DNS: - family = AF_INET6; - break; - default: - return FALSE; - } - - this->mutex->lock(this->mutex); - - in = fopen(this->file, "r"); - /* allows us to stream from in to out */ - unlink(this->file); - out = fopen(this->file, "w"); - if (out) - { - addr = host_create_from_chunk(family, data, 0); - fprintf(out, "nameserver %H # by strongSwan, from %Y\n", - addr, ike_sa->get_other_id(ike_sa)); - DBG1(DBG_IKE, "installing DNS server %H to %s", addr, this->file); - addr->destroy(addr); - handled = TRUE; - - /* copy rest of the file */ - if (in) - { - while ((len = fread(buf, 1, sizeof(buf), in))) - { - ignore_result(fwrite(buf, 1, len, out)); - } - fclose(in); - } - fclose(out); - } - - if (!handled) - { - DBG1(DBG_IKE, "adding DNS server failed", this->file); - } - this->mutex->unlock(this->mutex); - return handled; -} - -/** - * Implementation of attribute_handler_t.release - */ -static void release(private_resolv_conf_handler_t *this, ike_sa_t *ike_sa, - configuration_attribute_type_t type, chunk_t data) -{ - FILE *in, *out; - char line[1024], matcher[512], *pos; - host_t *addr; - int family; - - switch (type) - { - case INTERNAL_IP4_DNS: - family = AF_INET; - break; - case INTERNAL_IP6_DNS: - family = AF_INET6; - break; - default: - return; - } - - this->mutex->lock(this->mutex); - - in = fopen(this->file, "r"); - if (in) - { - /* allows us to stream from in to out */ - unlink(this->file); - out = fopen(this->file, "w"); - if (out) - { - addr = host_create_from_chunk(family, data, 0); - snprintf(matcher, sizeof(matcher), - "nameserver %H # by strongSwan, from %Y\n", - addr, ike_sa->get_other_id(ike_sa)); - - /* copy all, but matching line */ - while ((pos = fgets(line, sizeof(line), in))) - { - if (strneq(line, matcher, strlen(matcher))) - { - DBG1(DBG_IKE, "removing DNS server %H from %s", - addr, this->file); - } - else - { - fputs(line, out); - } - } - addr->destroy(addr); - fclose(out); - } - fclose(in); - } - - this->mutex->unlock(this->mutex); -} - -/** - * Implementation of resolv_conf_handler_t.destroy. - */ -static void destroy(private_resolv_conf_handler_t *this) -{ - this->mutex->destroy(this->mutex); - free(this); -} - -/** - * See header - */ -resolv_conf_handler_t *resolv_conf_handler_create() -{ - private_resolv_conf_handler_t *this = malloc_thing(private_resolv_conf_handler_t); - - this->public.handler.handle = (bool(*)(attribute_handler_t*, ike_sa_t*, configuration_attribute_type_t, chunk_t))handle; - this->public.handler.release = (void(*)(attribute_handler_t*, ike_sa_t*, configuration_attribute_type_t, chunk_t))release; - this->public.destroy = (void(*)(resolv_conf_handler_t*))destroy; - - this->mutex = mutex_create(MUTEX_TYPE_DEFAULT); - this->file = lib->settings->get_str(lib->settings, - "charon.plugins.resolv-conf.file", RESOLV_CONF); - - return &this->public; -} - |