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/*
* Copyright (C) 2008 The Android Open Source Project
*
* 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.
*/
#include <stdlib.h>
#include <string.h>
#define LOG_TAG "InterfaceConfig"
#include <cutils/log.h>
#include "InterfaceConfig.h"
#include "NetworkManager.h"
const char *InterfaceConfig::PropertyNames[] = { "dhcp", "ip",
"netmask",
"gateway", "dns1", "dns2",
"dns3", '\0' };
InterfaceConfig::InterfaceConfig(const char *prop_prefix) {
mPropPrefix = strdup(prop_prefix);
mUseDhcp = true;
registerProperties();
}
InterfaceConfig::~InterfaceConfig() {
unregisterProperties();
free(mPropPrefix);
}
InterfaceConfig::InterfaceConfig(const char *prop_prefix,
const char *ip, const char *nm,
const char *gw, const char *dns1, const char *dns2,
const char *dns3) {
mPropPrefix = strdup(prop_prefix);
mUseDhcp = false;
if (!inet_aton(ip, &mIp))
LOGW("Unable to parse ip (%s)", ip);
if (!inet_aton(nm, &mNetmask))
LOGW("Unable to parse netmask (%s)", nm);
if (!inet_aton(gw, &mGateway))
LOGW("Unable to parse gateway (%s)", gw);
if (!inet_aton(dns1, &mDns1))
LOGW("Unable to parse dns1 (%s)", dns1);
if (!inet_aton(dns2, &mDns2))
LOGW("Unable to parse dns2 (%s)", dns2);
if (!inet_aton(dns3, &mDns3))
LOGW("Unable to parse dns3 (%s)", dns3);
registerProperties();
}
InterfaceConfig::InterfaceConfig(const char *prop_prefix,
const struct in_addr *ip,
const struct in_addr *nm, const struct in_addr *gw,
const struct in_addr *dns1, const struct in_addr *dns2,
const struct in_addr *dns3) {
mPropPrefix = strdup(prop_prefix);
mUseDhcp = false;
memcpy(&mIp, ip, sizeof(struct in_addr));
memcpy(&mNetmask, nm, sizeof(struct in_addr));
memcpy(&mGateway, gw, sizeof(struct in_addr));
memcpy(&mDns1, dns1, sizeof(struct in_addr));
memcpy(&mDns2, dns2, sizeof(struct in_addr));
memcpy(&mDns3, dns3, sizeof(struct in_addr));
registerProperties();
}
int InterfaceConfig::registerProperties() {
for (const char **p = InterfaceConfig::PropertyNames; *p != '\0'; p++) {
char *tmp;
asprintf(&tmp, "%s.if.%s", mPropPrefix, *p);
if (NetworkManager::Instance()->getPropMngr()->registerProperty(tmp,
this)) {
free(tmp);
return -1;
}
free(tmp);
}
return 0;
}
int InterfaceConfig::unregisterProperties() {
for (const char **p = InterfaceConfig::PropertyNames; *p != '\0'; p++) {
char *tmp;
asprintf(&tmp, "%s.if.%s", mPropPrefix, *p);
if (NetworkManager::Instance()->getPropMngr()->unregisterProperty(tmp))
LOGW("Unable to remove property '%s' (%s)", tmp, strerror(errno));
free(tmp);
}
return 0;
}
int InterfaceConfig::set(const char *name, const char *value) {
const char *n;
for (n = &name[strlen(name)]; *n != '.'; n--);
n++;
if (!strcasecmp(n, "name")) {
errno = EROFS;
return -1;
} else if (!strcasecmp(n, "ip") && !inet_aton(value, &mIp))
goto out_inval;
else if (!strcasecmp(n, "dhcp"))
mUseDhcp = (atoi(value) == 0 ? false : true);
else if (!strcasecmp(n, "netmask") && !inet_aton(value, &mNetmask))
goto out_inval;
else if (!strcasecmp(n, "gateway") && !inet_aton(value, &mGateway))
goto out_inval;
else if (!strcasecmp(n, "dns1") && !inet_aton(value, &mDns1))
goto out_inval;
else if (!strcasecmp(n, "dns2") && !inet_aton(value, &mDns2))
goto out_inval;
else if (!strcasecmp(n, "dns3") && !inet_aton(value, &mDns3))
goto out_inval;
else {
errno = ENOENT;
return -1;
}
return 0;
out_inval:
errno = EINVAL;
return -1;
}
const char *InterfaceConfig::get(const char *name, char *buffer, size_t max) {
const char *n;
for (n = &name[strlen(name)]; *n != '.'; n--);
n++;
if (!strcasecmp(n, "ip"))
strncpy(buffer, inet_ntoa(mIp), max);
else if (!strcasecmp(n, "dhcp"))
snprintf(buffer, max, "%d", mUseDhcp);
else if (!strcasecmp(n, "netmask"))
strncpy(buffer, inet_ntoa(mNetmask), max);
else if (!strcasecmp(n, "gateway"))
strncpy(buffer, inet_ntoa(mGateway), max);
else if (!strcasecmp(n, "dns1"))
strncpy(buffer, inet_ntoa(mDns1), max);
else if (!strcasecmp(n, "dns2"))
strncpy(buffer, inet_ntoa(mDns2), max);
else if (!strcasecmp(n, "dns3"))
strncpy(buffer, inet_ntoa(mDns3), max);
else {
strncpy(buffer, "(internal error)", max);
errno = ENOENT;
return NULL;
}
return buffer;
}
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