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-rw-r--r--config.c231
1 files changed, 0 insertions, 231 deletions
diff --git a/config.c b/config.c
deleted file mode 100644
index d4cc9af..0000000
--- a/config.c
+++ /dev/null
@@ -1,231 +0,0 @@
-/*
- * Copyright 2011 Daniel Drown
- *
- * Licensed 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.
- *
- * config.c - configuration settings
- */
-
-#include <arpa/inet.h>
-#include <errno.h>
-#include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <cutils/config_utils.h>
-#include <netutils/checksum.h>
-#include <netutils/ifc.h>
-
-#include "clatd.h"
-#include "config.h"
-#include "getaddr.h"
-#include "logging.h"
-
-struct clat_config Global_Clatd_Config;
-
-/* function: config_item_str
- * locates the config item and returns the pointer to a string, or NULL on failure. Caller frees
- * pointer
- * root - parsed configuration
- * item_name - name of config item to locate
- * defaultvar - value to use if config item isn't present
- */
-char *config_item_str(cnode *root, const char *item_name, const char *defaultvar) {
- const char *tmp;
-
- if (!(tmp = config_str(root, item_name, defaultvar))) {
- logmsg(ANDROID_LOG_FATAL, "%s config item needed", item_name);
- return NULL;
- }
- return strdup(tmp);
-}
-
-/* function: config_item_int16_t
- * locates the config item, parses the integer, and returns the pointer ret_val_ptr, or NULL on
- * failure
- * root - parsed configuration
- * item_name - name of config item to locate
- * defaultvar - value to use if config item isn't present
- * ret_val_ptr - pointer for return value storage
- */
-int16_t *config_item_int16_t(cnode *root, const char *item_name, const char *defaultvar,
- int16_t *ret_val_ptr) {
- const char *tmp;
- char *endptr;
- long int conf_int;
-
- if (!(tmp = config_str(root, item_name, defaultvar))) {
- logmsg(ANDROID_LOG_FATAL, "%s config item needed", item_name);
- return NULL;
- }
-
- errno = 0;
- conf_int = strtol(tmp, &endptr, 10);
- if (errno > 0) {
- logmsg(ANDROID_LOG_FATAL, "%s config item is not numeric: %s (error=%s)", item_name, tmp,
- strerror(errno));
- return NULL;
- }
- if (endptr == tmp || *tmp == '\0') {
- logmsg(ANDROID_LOG_FATAL, "%s config item is not numeric: %s", item_name, tmp);
- return NULL;
- }
- if (*endptr != '\0') {
- logmsg(ANDROID_LOG_FATAL, "%s config item contains non-numeric characters: %s", item_name,
- endptr);
- return NULL;
- }
- if (conf_int > INT16_MAX || conf_int < INT16_MIN) {
- logmsg(ANDROID_LOG_FATAL, "%s config item is too big/small: %d", item_name, conf_int);
- return NULL;
- }
- *ret_val_ptr = conf_int;
- return ret_val_ptr;
-}
-
-/* function: config_item_ip
- * locates the config item, parses the ipv4 address, and returns the pointer ret_val_ptr, or NULL on
- * failure
- * root - parsed configuration
- * item_name - name of config item to locate
- * defaultvar - value to use if config item isn't present
- * ret_val_ptr - pointer for return value storage
- */
-struct in_addr *config_item_ip(cnode *root, const char *item_name, const char *defaultvar,
- struct in_addr *ret_val_ptr) {
- const char *tmp;
- int status;
-
- if (!(tmp = config_str(root, item_name, defaultvar))) {
- logmsg(ANDROID_LOG_FATAL, "%s config item needed", item_name);
- return NULL;
- }
-
- status = inet_pton(AF_INET, tmp, ret_val_ptr);
- if (status <= 0) {
- logmsg(ANDROID_LOG_FATAL, "invalid IPv4 address specified for %s: %s", item_name, tmp);
- return NULL;
- }
-
- return ret_val_ptr;
-}
-
-/* function: config_item_ip6
- * locates the config item, parses the ipv6 address, and returns the pointer ret_val_ptr, or NULL on
- * failure
- * root - parsed configuration
- * item_name - name of config item to locate
- * defaultvar - value to use if config item isn't present
- * ret_val_ptr - pointer for return value storage
- */
-struct in6_addr *config_item_ip6(cnode *root, const char *item_name, const char *defaultvar,
- struct in6_addr *ret_val_ptr) {
- const char *tmp;
- int status;
-
- if (!(tmp = config_str(root, item_name, defaultvar))) {
- logmsg(ANDROID_LOG_FATAL, "%s config item needed", item_name);
- return NULL;
- }
-
- status = inet_pton(AF_INET6, tmp, ret_val_ptr);
- if (status <= 0) {
- logmsg(ANDROID_LOG_FATAL, "invalid IPv6 address specified for %s: %s", item_name, tmp);
- return NULL;
- }
-
- return ret_val_ptr;
-}
-
-/* function: ipv6_prefix_equal
- * compares the prefixes two ipv6 addresses. assumes the prefix lengths are both /64.
- * a1 - first address
- * a2 - second address
- * returns: 0 if the subnets are different, 1 if they are the same.
- */
-int ipv6_prefix_equal(struct in6_addr *a1, struct in6_addr *a2) { return !memcmp(a1, a2, 8); }
-
-/* function: read_config
- * reads the config file and parses it into the global variable Global_Clatd_Config. returns 0 on
- * failure, 1 on success
- * file - filename to parse
- * uplink_interface - interface to use to reach the internet and supplier of address space
- */
-int read_config(const char *file, const char *uplink_interface) {
- cnode *root = config_node("", "");
- unsigned flags;
-
- if (!root) {
- logmsg(ANDROID_LOG_FATAL, "out of memory");
- return 0;
- }
-
- memset(&Global_Clatd_Config, '\0', sizeof(Global_Clatd_Config));
-
- config_load_file(root, file);
- if (root->first_child == NULL) {
- logmsg(ANDROID_LOG_FATAL, "Could not read config file %s", file);
- goto failed;
- }
-
- Global_Clatd_Config.default_pdp_interface = strdup(uplink_interface);
- if (!Global_Clatd_Config.default_pdp_interface) goto failed;
-
- if (!config_item_ip(root, "ipv4_local_subnet", DEFAULT_IPV4_LOCAL_SUBNET,
- &Global_Clatd_Config.ipv4_local_subnet))
- goto failed;
-
- if (!config_item_int16_t(root, "ipv4_local_prefixlen", DEFAULT_IPV4_LOCAL_PREFIXLEN,
- &Global_Clatd_Config.ipv4_local_prefixlen))
- goto failed;
-
- if (!config_item_ip6(root, "ipv6_host_id", "::", &Global_Clatd_Config.ipv6_host_id)) goto failed;
-
- /* In order to prevent multiple devices attempting to use the same clat address, never use a
- statically-configured interface ID on a broadcast interface such as wifi. */
- if (!IN6_IS_ADDR_UNSPECIFIED(&Global_Clatd_Config.ipv6_host_id)) {
- ifc_init();
- ifc_get_info(Global_Clatd_Config.default_pdp_interface, NULL, NULL, &flags);
- ifc_close();
- Global_Clatd_Config.use_dynamic_iid = (flags & IFF_BROADCAST) != 0;
- } else {
- Global_Clatd_Config.use_dynamic_iid = 1;
- }
-
- return 1;
-
-failed:
- free(root);
- return 0;
-}
-
-/* function; dump_config
- * prints the current config
- */
-void dump_config() {
- char charbuffer[INET6_ADDRSTRLEN];
-
- logmsg(
- ANDROID_LOG_DEBUG, "ipv6_local_subnet = %s",
- inet_ntop(AF_INET6, &Global_Clatd_Config.ipv6_local_subnet, charbuffer, sizeof(charbuffer)));
- logmsg(
- ANDROID_LOG_DEBUG, "ipv4_local_subnet = %s",
- inet_ntop(AF_INET, &Global_Clatd_Config.ipv4_local_subnet, charbuffer, sizeof(charbuffer)));
- logmsg(ANDROID_LOG_DEBUG, "ipv4_local_prefixlen = %d", Global_Clatd_Config.ipv4_local_prefixlen);
- logmsg(ANDROID_LOG_DEBUG, "plat_subnet = %s",
- inet_ntop(AF_INET6, &Global_Clatd_Config.plat_subnet, charbuffer, sizeof(charbuffer)));
- logmsg(ANDROID_LOG_DEBUG, "default_pdp_interface = %s",
- Global_Clatd_Config.default_pdp_interface);
-}
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