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CommandListener.cpp
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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.
*/
// #define LOG_NDEBUG 0
#include <stdlib.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <dirent.h>
#include <errno.h>
#include <string.h>
#include <linux/if.h>
#include <resolv_netid.h>
#define __STDC_FORMAT_MACROS 1
#include <inttypes.h>
#define LOG_TAG "CommandListener"
#include <cutils/log.h>
#include <netutils/ifc.h>
#include <sysutils/SocketClient.h>
#include "CommandListener.h"
#include "ResponseCode.h"
#include "BandwidthController.h"
#include "IdletimerController.h"
#include "SecondaryTableController.h"
#include "oem_iptables_hook.h"
#include "NetdConstants.h"
#include "FirewallController.h"
NetworkController *CommandListener::sNetCtrl = NULL;
TetherController *CommandListener::sTetherCtrl = NULL;
NatController *CommandListener::sNatCtrl = NULL;
PppController *CommandListener::sPppCtrl = NULL;
SoftapController *CommandListener::sSoftapCtrl = NULL;
BandwidthController * CommandListener::sBandwidthCtrl = NULL;
IdletimerController * CommandListener::sIdletimerCtrl = NULL;
InterfaceController *CommandListener::sInterfaceCtrl = NULL;
ResolverController *CommandListener::sResolverCtrl = NULL;
SecondaryTableController *CommandListener::sSecondaryTableCtrl = NULL;
FirewallController *CommandListener::sFirewallCtrl = NULL;
ClatdController *CommandListener::sClatdCtrl = NULL;
/**
* List of module chains to be created, along with explicit ordering. ORDERING
* IS CRITICAL, AND SHOULD BE TRIPLE-CHECKED WITH EACH CHANGE.
*/
static const char* FILTER_INPUT[] = {
// Bandwidth should always be early in input chain, to make sure we
// correctly count incoming traffic against data plan.
BandwidthController::LOCAL_INPUT,
FirewallController::LOCAL_INPUT,
NULL,
};
static const char* FILTER_FORWARD[] = {
OEM_IPTABLES_FILTER_FORWARD,
FirewallController::LOCAL_FORWARD,
BandwidthController::LOCAL_FORWARD,
NatController::LOCAL_FORWARD,
NULL,
};
static const char* FILTER_OUTPUT[] = {
OEM_IPTABLES_FILTER_OUTPUT,
FirewallController::LOCAL_OUTPUT,
BandwidthController::LOCAL_OUTPUT,
SecondaryTableController::LOCAL_FILTER_OUTPUT,
NULL,
};
static const char* RAW_PREROUTING[] = {
BandwidthController::LOCAL_RAW_PREROUTING,
IdletimerController::LOCAL_RAW_PREROUTING,
NULL,
};
static const char* MANGLE_POSTROUTING[] = {
BandwidthController::LOCAL_MANGLE_POSTROUTING,
IdletimerController::LOCAL_MANGLE_POSTROUTING,
NULL,
};
static const char* MANGLE_OUTPUT[] = {
SecondaryTableController::LOCAL_MANGLE_EXEMPT,
SecondaryTableController::LOCAL_MANGLE_OUTPUT,
NULL,
};
static const char* NAT_PREROUTING[] = {
OEM_IPTABLES_NAT_PREROUTING,
NULL,
};
static const char* NAT_POSTROUTING[] = {
NatController::LOCAL_NAT_POSTROUTING,
SecondaryTableController::LOCAL_NAT_POSTROUTING,
NULL,
};
static void createChildChains(IptablesTarget target, const char* table, const char* parentChain,
const char** childChains) {
const char** childChain = childChains;
do {
// Order is important:
// -D to delete any pre-existing jump rule (removes references
// that would prevent -X from working)
// -F to flush any existing chain
// -X to delete any existing chain
// -N to create the chain
// -A to append the chain to parent
execIptablesSilently(target, "-t", table, "-D", parentChain, "-j", *childChain, NULL);
execIptablesSilently(target, "-t", table, "-F", *childChain, NULL);
execIptablesSilently(target, "-t", table, "-X", *childChain, NULL);
execIptables(target, "-t", table, "-N", *childChain, NULL);
execIptables(target, "-t", table, "-A", parentChain, "-j", *childChain, NULL);
} while (*(++childChain) != NULL);
}
CommandListener::CommandListener() :
FrameworkListener("netd", true) {
registerCmd(new InterfaceCmd());
registerCmd(new IpFwdCmd());
registerCmd(new TetherCmd());
registerCmd(new NatCmd());
registerCmd(new ListTtysCmd());
registerCmd(new PppdCmd());
registerCmd(new SoftapCmd());
registerCmd(new BandwidthControlCmd());
registerCmd(new IdletimerControlCmd());
registerCmd(new ResolverCmd());
registerCmd(new FirewallCmd());
registerCmd(new ClatdCmd());
if (!sNetCtrl)
sNetCtrl = new NetworkController();
if (!sSecondaryTableCtrl)
sSecondaryTableCtrl = new SecondaryTableController(sNetCtrl);
if (!sTetherCtrl)
sTetherCtrl = new TetherController();
if (!sNatCtrl)
sNatCtrl = new NatController(sSecondaryTableCtrl, sNetCtrl);
if (!sPppCtrl)
sPppCtrl = new PppController();
if (!sSoftapCtrl)
sSoftapCtrl = new SoftapController();
if (!sBandwidthCtrl)
sBandwidthCtrl = new BandwidthController();
if (!sIdletimerCtrl)
sIdletimerCtrl = new IdletimerController();
if (!sResolverCtrl)
sResolverCtrl = new ResolverController();
if (!sFirewallCtrl)
sFirewallCtrl = new FirewallController();
if (!sInterfaceCtrl)
sInterfaceCtrl = new InterfaceController();
if (!sClatdCtrl)
sClatdCtrl = new ClatdController();
/*
* This is the only time we touch top-level chains in iptables; controllers
* should only mutate rules inside of their children chains, as created by
* the constants above.
*
* Modules should never ACCEPT packets (except in well-justified cases);
* they should instead defer to any remaining modules using RETURN, or
* otherwise DROP/REJECT.
*/
// Create chains for children modules
createChildChains(V4V6, "filter", "INPUT", FILTER_INPUT);
createChildChains(V4V6, "filter", "FORWARD", FILTER_FORWARD);
createChildChains(V4V6, "filter", "OUTPUT", FILTER_OUTPUT);
createChildChains(V4V6, "raw", "PREROUTING", RAW_PREROUTING);
createChildChains(V4V6, "mangle", "POSTROUTING", MANGLE_POSTROUTING);
createChildChains(V4V6, "mangle", "OUTPUT", MANGLE_OUTPUT);
createChildChains(V4, "nat", "PREROUTING", NAT_PREROUTING);
createChildChains(V4, "nat", "POSTROUTING", NAT_POSTROUTING);
// Let each module setup their child chains
setupOemIptablesHook();
/* When enabled, DROPs all packets except those matching rules. */
sFirewallCtrl->setupIptablesHooks();
/* Does DROPs in FORWARD by default */
sNatCtrl->setupIptablesHooks();
/*
* Does REJECT in INPUT, OUTPUT. Does counting also.
* No DROP/REJECT allowed later in netfilter-flow hook order.
*/
sBandwidthCtrl->setupIptablesHooks();
/*
* Counts in nat: PREROUTING, POSTROUTING.
* No DROP/REJECT allowed later in netfilter-flow hook order.
*/
sIdletimerCtrl->setupIptablesHooks();
sBandwidthCtrl->enableBandwidthControl(false);
sSecondaryTableCtrl->setupIptablesHooks();
}
CommandListener::InterfaceCmd::InterfaceCmd() :
NetdCommand("interface") {
}
int CommandListener::InterfaceCmd::runCommand(SocketClient *cli,
int argc, char **argv) {
if (argc < 2) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
return 0;
}
if (!strcmp(argv[1], "list")) {
DIR *d;
struct dirent *de;
if (!(d = opendir("/sys/class/net"))) {
cli->sendMsg(ResponseCode::OperationFailed, "Failed to open sysfs dir", true);
return 0;
}
while((de = readdir(d))) {
if (de->d_name[0] == '.')
continue;
cli->sendMsg(ResponseCode::InterfaceListResult, de->d_name, false);
}
closedir(d);
cli->sendMsg(ResponseCode::CommandOkay, "Interface list completed", false);
return 0;
} else if (!strcmp(argv[1], "driver")) {
int rc;
char *rbuf;
if (argc < 4) {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Usage: interface driver <interface> <cmd> <args>", false);
return 0;
}
rc = sInterfaceCtrl->interfaceCommand(argc, argv, &rbuf);
if (rc) {
cli->sendMsg(ResponseCode::OperationFailed, "Failed to execute command", true);
} else {
cli->sendMsg(ResponseCode::CommandOkay, rbuf, false);
}
return 0;
} else {
/*
* These commands take a minimum of 3 arguments
*/
if (argc < 3) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
return 0;
}
// 0 1 2 3 4 5 6 7
// interface route add/remove iface default/secondary dest prefix gateway
// interface fwmark rule add/remove iface
// interface fwmark route add/remove iface dest prefix
// interface fwmark uid add/remove iface uid_start uid_end
// interface fwmark exempt add/remove dest
// interface fwmark get protect
// interface fwmark get mark uid
if (!strcmp(argv[1], "fwmark")) {
if (!strcmp(argv[2], "rule")) {
if (argc < 5) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
return 0;
}
if (!strcmp(argv[3], "add")) {
if (!sSecondaryTableCtrl->addFwmarkRule(argv[4])) {
cli->sendMsg(ResponseCode::CommandOkay,
"Fwmark rule successfully added", false);
} else {
cli->sendMsg(ResponseCode::OperationFailed, "Failed to add fwmark rule",
true);
}
} else if (!strcmp(argv[3], "remove")) {
if (!sSecondaryTableCtrl->removeFwmarkRule(argv[4])) {
cli->sendMsg(ResponseCode::CommandOkay,
"Fwmark rule successfully removed", false);
} else {
cli->sendMsg(ResponseCode::OperationFailed,
"Failed to remove fwmark rule", true);
}
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown fwmark rule cmd",
false);
}
return 0;
} else if (!strcmp(argv[2], "route")) {
if (argc < 7) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
return 0;
}
if (!strcmp(argv[3], "add")) {
if (!sSecondaryTableCtrl->addFwmarkRoute(argv[4], argv[5], atoi(argv[6]))) {
cli->sendMsg(ResponseCode::CommandOkay,
"Fwmark route successfully added", false);
} else {
cli->sendMsg(ResponseCode::OperationFailed,
"Failed to add fwmark route", true);
}
} else if (!strcmp(argv[3], "remove")) {
if (!sSecondaryTableCtrl->removeFwmarkRoute(argv[4], argv[5],
atoi(argv[6]))) {
cli->sendMsg(ResponseCode::CommandOkay,
"Fwmark route successfully removed", false);
} else {
cli->sendMsg(ResponseCode::OperationFailed,
"Failed to remove fwmark route", true);
}
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown fwmark route cmd",
false);
}
return 0;
} else if (!strcmp(argv[2], "uid")) {
if (argc < 7) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
return 0;
}
if (!strcmp(argv[3], "add")) {
if (!sSecondaryTableCtrl->addUidRule(argv[4], atoi(argv[5]), atoi(argv[6]))) {
cli->sendMsg(ResponseCode::CommandOkay, "uid rule successfully added",
false);
} else {
cli->sendMsg(ResponseCode::OperationFailed, "Failed to add uid rule", true);
}
} else if (!strcmp(argv[3], "remove")) {
if (!sSecondaryTableCtrl->removeUidRule(argv[4],
atoi(argv[5]), atoi(argv[6]))) {
cli->sendMsg(ResponseCode::CommandOkay, "uid rule successfully removed",
false);
} else {
cli->sendMsg(ResponseCode::OperationFailed, "Failed to remove uid rule",
true);
}
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown uid cmd", false);
}
return 0;
} else if (!strcmp(argv[2], "exempt")) {
if (argc < 5) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
return 0;
}
if (!strcmp(argv[3], "add")) {
if (!sSecondaryTableCtrl->addHostExemption(argv[4])) {
cli->sendMsg(ResponseCode::CommandOkay, "exemption rule successfully added",
false);
} else {
cli->sendMsg(ResponseCode::OperationFailed, "Failed to add exemption rule",
true);
}
} else if (!strcmp(argv[3], "remove")) {
if (!sSecondaryTableCtrl->removeHostExemption(argv[4])) {
cli->sendMsg(ResponseCode::CommandOkay,
"exemption rule successfully removed", false);
} else {
cli->sendMsg(ResponseCode::OperationFailed,
"Failed to remove exemption rule", true);
}
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown exemption cmd", false);
}
return 0;
} else if (!strcmp(argv[2], "get")) {
if (argc < 4) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
return 0;
}
if (!strcmp(argv[3], "protect")) {
sSecondaryTableCtrl->getProtectMark(cli);
return 0;
} else if (!strcmp(argv[3], "mark")) {
if (argc < 5) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
return 0;
}
sSecondaryTableCtrl->getUidMark(cli, atoi(argv[4]));
return 0;
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown fwmark get cmd", false);
return 0;
}
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown fwmark cmd", false);
return 0;
}
}
if (!strcmp(argv[1], "route")) {
int prefix_length = 0;
if (argc < 8) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
return 0;
}
if (sscanf(argv[6], "%d", &prefix_length) != 1) {
cli->sendMsg(ResponseCode::CommandParameterError, "Invalid route prefix", false);
return 0;
}
if (!strcmp(argv[2], "add")) {
if (!strcmp(argv[4], "default")) {
if (ifc_add_route(argv[3], argv[5], prefix_length, argv[7])) {
cli->sendMsg(ResponseCode::OperationFailed,
"Failed to add route to default table", true);
} else {
cli->sendMsg(ResponseCode::CommandOkay,
"Route added to default table", false);
}
} else if (!strcmp(argv[4], "secondary")) {
return sSecondaryTableCtrl->addRoute(cli, argv[3], argv[5],
prefix_length, argv[7]);
} else {
cli->sendMsg(ResponseCode::CommandParameterError,
"Invalid route type, expecting 'default' or 'secondary'", false);
return 0;
}
} else if (!strcmp(argv[2], "remove")) {
if (!strcmp(argv[4], "default")) {
if (ifc_remove_route(argv[3], argv[5], prefix_length, argv[7])) {
cli->sendMsg(ResponseCode::OperationFailed,
"Failed to remove route from default table", true);
} else {
cli->sendMsg(ResponseCode::CommandOkay,
"Route removed from default table", false);
}
} else if (!strcmp(argv[4], "secondary")) {
return sSecondaryTableCtrl->removeRoute(cli, argv[3], argv[5],
prefix_length, argv[7]);
} else {
cli->sendMsg(ResponseCode::CommandParameterError,
"Invalid route type, expecting 'default' or 'secondary'", false);
return 0;
}
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown interface cmd", false);
}
return 0;
}
if (!strcmp(argv[1], "getcfg")) {
struct in_addr addr;
int prefixLength;
unsigned char hwaddr[6];
unsigned flags = 0;
ifc_init();
memset(hwaddr, 0, sizeof(hwaddr));
if (ifc_get_info(argv[2], &addr.s_addr, &prefixLength, &flags)) {
cli->sendMsg(ResponseCode::OperationFailed, "Interface not found", true);
ifc_close();
return 0;
}
if (ifc_get_hwaddr(argv[2], (void *) hwaddr)) {
ALOGW("Failed to retrieve HW addr for %s (%s)", argv[2], strerror(errno));
}
char *addr_s = strdup(inet_ntoa(addr));
const char *updown, *brdcst, *loopbk, *ppp, *running, *multi;
updown = (flags & IFF_UP) ? "up" : "down";
brdcst = (flags & IFF_BROADCAST) ? " broadcast" : "";
loopbk = (flags & IFF_LOOPBACK) ? " loopback" : "";
ppp = (flags & IFF_POINTOPOINT) ? " point-to-point" : "";
running = (flags & IFF_RUNNING) ? " running" : "";
multi = (flags & IFF_MULTICAST) ? " multicast" : "";
char *flag_s;
asprintf(&flag_s, "%s%s%s%s%s%s", updown, brdcst, loopbk, ppp, running, multi);
char *msg = NULL;
asprintf(&msg, "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x %s %d %s",
hwaddr[0], hwaddr[1], hwaddr[2], hwaddr[3], hwaddr[4], hwaddr[5],
addr_s, prefixLength, flag_s);
cli->sendMsg(ResponseCode::InterfaceGetCfgResult, msg, false);
free(addr_s);
free(flag_s);
free(msg);
ifc_close();
return 0;
} else if (!strcmp(argv[1], "setcfg")) {
// arglist: iface [addr prefixLength] flags
if (argc < 4) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
return 0;
}
ALOGD("Setting iface cfg");
struct in_addr addr;
unsigned flags = 0;
int index = 5;
ifc_init();
if (!inet_aton(argv[3], &addr)) {
// Handle flags only case
index = 3;
} else {
if (ifc_set_addr(argv[2], addr.s_addr)) {
cli->sendMsg(ResponseCode::OperationFailed, "Failed to set address", true);
ifc_close();
return 0;
}
// Set prefix length on a non zero address
if (addr.s_addr != 0 && ifc_set_prefixLength(argv[2], atoi(argv[4]))) {
cli->sendMsg(ResponseCode::OperationFailed, "Failed to set prefixLength", true);
ifc_close();
return 0;
}
}
/* Process flags */
for (int i = index; i < argc; i++) {
char *flag = argv[i];
if (!strcmp(flag, "up")) {
ALOGD("Trying to bring up %s", argv[2]);
if (ifc_up(argv[2])) {
ALOGE("Error upping interface");
cli->sendMsg(ResponseCode::OperationFailed, "Failed to up interface", true);
ifc_close();
return 0;
}
} else if (!strcmp(flag, "down")) {
ALOGD("Trying to bring down %s", argv[2]);
if (ifc_down(argv[2])) {
ALOGE("Error downing interface");
cli->sendMsg(ResponseCode::OperationFailed, "Failed to down interface", true);
ifc_close();
return 0;
}
} else if (!strcmp(flag, "broadcast")) {
// currently ignored
} else if (!strcmp(flag, "multicast")) {
// currently ignored
} else if (!strcmp(flag, "running")) {
// currently ignored
} else if (!strcmp(flag, "loopback")) {
// currently ignored
} else if (!strcmp(flag, "point-to-point")) {
// currently ignored
} else {
cli->sendMsg(ResponseCode::CommandParameterError, "Flag unsupported", false);
ifc_close();
return 0;
}
}
cli->sendMsg(ResponseCode::CommandOkay, "Interface configuration set", false);
ifc_close();
return 0;
} else if (!strcmp(argv[1], "clearaddrs")) {
// arglist: iface
ALOGD("Clearing all IP addresses on %s", argv[2]);
ifc_clear_addresses(argv[2]);
cli->sendMsg(ResponseCode::CommandOkay, "Interface IP addresses cleared", false);
return 0;
} else if (!strcmp(argv[1], "ipv6privacyextensions")) {
if (argc != 4) {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Usage: interface ipv6privacyextensions <interface> <enable|disable>",
false);
return 0;
}
int enable = !strncmp(argv[3], "enable", 7);
if (sInterfaceCtrl->setIPv6PrivacyExtensions(argv[2], enable) == 0) {
cli->sendMsg(ResponseCode::CommandOkay, "IPv6 privacy extensions changed", false);
} else {
cli->sendMsg(ResponseCode::OperationFailed,
"Failed to set ipv6 privacy extensions", true);
}
return 0;
} else if (!strcmp(argv[1], "ipv6")) {
if (argc != 4) {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Usage: interface ipv6 <interface> <enable|disable>",
false);
return 0;
}
int enable = !strncmp(argv[3], "enable", 7);
if (sInterfaceCtrl->setEnableIPv6(argv[2], enable) == 0) {
cli->sendMsg(ResponseCode::CommandOkay, "IPv6 state changed", false);
} else {
cli->sendMsg(ResponseCode::OperationFailed,
"Failed to change IPv6 state", true);
}
return 0;
} else if (!strcmp(argv[1], "getmtu")) {
char *msg = NULL;
int mtu = 0;
if (sInterfaceCtrl->getMtu(argv[2], &mtu) == 0) {
asprintf(&msg, "MTU = %d", mtu);
cli->sendMsg(ResponseCode::InterfaceGetMtuResult, msg, false);
free(msg);
} else {
cli->sendMsg(ResponseCode::OperationFailed,
"Failed to get MTU", true);
}
return 0;
} else if (!strcmp(argv[1], "setmtu")) {
if (argc != 4) {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Usage: interface setmtu <interface> <val>", false);
return 0;
}
if (sInterfaceCtrl->setMtu(argv[2], argv[3]) == 0) {
cli->sendMsg(ResponseCode::CommandOkay, "MTU changed", false);
} else {
cli->sendMsg(ResponseCode::OperationFailed,
"Failed to get MTU", true);
}
return 0;
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown interface cmd", false);
return 0;
}
}
return 0;
}
CommandListener::ListTtysCmd::ListTtysCmd() :
NetdCommand("list_ttys") {
}
int CommandListener::ListTtysCmd::runCommand(SocketClient *cli,
int argc, char **argv) {
TtyCollection *tlist = sPppCtrl->getTtyList();
TtyCollection::iterator it;
for (it = tlist->begin(); it != tlist->end(); ++it) {
cli->sendMsg(ResponseCode::TtyListResult, *it, false);
}
cli->sendMsg(ResponseCode::CommandOkay, "Ttys listed.", false);
return 0;
}
CommandListener::IpFwdCmd::IpFwdCmd() :
NetdCommand("ipfwd") {
}
int CommandListener::IpFwdCmd::runCommand(SocketClient *cli,
int argc, char **argv) {
int rc = 0;
if (argc < 2) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
return 0;
}
if (!strcmp(argv[1], "status")) {
char *tmp = NULL;
asprintf(&tmp, "Forwarding %s", (sTetherCtrl->getIpFwdEnabled() ? "enabled" : "disabled"));
cli->sendMsg(ResponseCode::IpFwdStatusResult, tmp, false);
free(tmp);
return 0;
} else if (!strcmp(argv[1], "enable")) {
rc = sTetherCtrl->setIpFwdEnabled(true);
} else if (!strcmp(argv[1], "disable")) {
rc = sTetherCtrl->setIpFwdEnabled(false);
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown ipfwd cmd", false);
return 0;
}
if (!rc) {
cli->sendMsg(ResponseCode::CommandOkay, "ipfwd operation succeeded", false);
} else {
cli->sendMsg(ResponseCode::OperationFailed, "ipfwd operation failed", true);
}
return 0;
}
CommandListener::TetherCmd::TetherCmd() :
NetdCommand("tether") {
}
int CommandListener::TetherCmd::runCommand(SocketClient *cli,
int argc, char **argv) {
int rc = 0;
if (argc < 2) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
return 0;
}
if (!strcmp(argv[1], "stop")) {
rc = sTetherCtrl->stopTethering();
} else if (!strcmp(argv[1], "status")) {
char *tmp = NULL;
asprintf(&tmp, "Tethering services %s",
(sTetherCtrl->isTetheringStarted() ? "started" : "stopped"));
cli->sendMsg(ResponseCode::TetherStatusResult, tmp, false);
free(tmp);
return 0;
} else if (argc == 3) {
if (!strcmp(argv[1], "interface") && !strcmp(argv[2], "list")) {
InterfaceCollection *ilist = sTetherCtrl->getTetheredInterfaceList();
InterfaceCollection::iterator it;
for (it = ilist->begin(); it != ilist->end(); ++it) {
cli->sendMsg(ResponseCode::TetherInterfaceListResult, *it, false);
}
} else if (!strcmp(argv[1], "dns") && !strcmp(argv[2], "list")) {
NetAddressCollection *dlist = sTetherCtrl->getDnsForwarders();
NetAddressCollection::iterator it;
for (it = dlist->begin(); it != dlist->end(); ++it) {
cli->sendMsg(ResponseCode::TetherDnsFwdTgtListResult, inet_ntoa(*it), false);
}
}
} else {
/*
* These commands take a minimum of 4 arguments
*/
if (argc < 4) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
return 0;
}
if (!strcmp(argv[1], "start")) {
if (argc % 2 == 1) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Bad number of arguments", false);
return 0;
}
int num_addrs = argc - 2;
int arg_index = 2;
int array_index = 0;
in_addr *addrs = (in_addr *)malloc(sizeof(in_addr) * num_addrs);
while (array_index < num_addrs) {
if (!inet_aton(argv[arg_index++], &(addrs[array_index++]))) {
cli->sendMsg(ResponseCode::CommandParameterError, "Invalid address", false);
free(addrs);
return 0;
}
}
rc = sTetherCtrl->startTethering(num_addrs, addrs);
free(addrs);
} else if (!strcmp(argv[1], "interface")) {
if (!strcmp(argv[2], "add")) {
rc = sTetherCtrl->tetherInterface(argv[3]);
} else if (!strcmp(argv[2], "remove")) {
rc = sTetherCtrl->untetherInterface(argv[3]);
/* else if (!strcmp(argv[2], "list")) handled above */
} else {
cli->sendMsg(ResponseCode::CommandParameterError,
"Unknown tether interface operation", false);
return 0;
}
} else if (!strcmp(argv[1], "dns")) {
if (!strcmp(argv[2], "set")) {
rc = sTetherCtrl->setDnsForwarders(&argv[3], argc - 3);
/* else if (!strcmp(argv[2], "list")) handled above */
} else {
cli->sendMsg(ResponseCode::CommandParameterError,
"Unknown tether interface operation", false);
return 0;
}
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown tether cmd", false);
return 0;
}
}
if (!rc) {
cli->sendMsg(ResponseCode::CommandOkay, "Tether operation succeeded", false);
} else {
cli->sendMsg(ResponseCode::OperationFailed, "Tether operation failed", true);
}
return 0;
}
CommandListener::NatCmd::NatCmd() :
NetdCommand("nat") {
}
int CommandListener::NatCmd::runCommand(SocketClient *cli,
int argc, char **argv) {
int rc = 0;
if (argc < 5) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
return 0;
}
if (!strcmp(argv[1], "enable")) {
rc = sNatCtrl->enableNat(argc, argv);
if(!rc) {
/* Ignore ifaces for now. */
rc = sBandwidthCtrl->setGlobalAlertInForwardChain();
}
} else if (!strcmp(argv[1], "disable")) {
/* Ignore ifaces for now. */
rc = sBandwidthCtrl->removeGlobalAlertInForwardChain();
rc |= sNatCtrl->disableNat(argc, argv);
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown nat cmd", false);
return 0;
}
if (!rc) {
cli->sendMsg(ResponseCode::CommandOkay, "Nat operation succeeded", false);
} else {
cli->sendMsg(ResponseCode::OperationFailed, "Nat operation failed", true);
}
return 0;
}
CommandListener::PppdCmd::PppdCmd() :
NetdCommand("pppd") {
}
int CommandListener::PppdCmd::runCommand(SocketClient *cli,
int argc, char **argv) {
int rc = 0;
if (argc < 3) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
return 0;
}
if (!strcmp(argv[1], "attach")) {
struct in_addr l, r, dns1, dns2;
memset(&dns1, 0, sizeof(struct in_addr));
memset(&dns2, 0, sizeof(struct in_addr));
if (!inet_aton(argv[3], &l)) {
cli->sendMsg(ResponseCode::CommandParameterError, "Invalid local address", false);
return 0;
}
if (!inet_aton(argv[4], &r)) {
cli->sendMsg(ResponseCode::CommandParameterError, "Invalid remote address", false);
return 0;
}
if ((argc > 3) && (!inet_aton(argv[5], &dns1))) {
cli->sendMsg(ResponseCode::CommandParameterError, "Invalid dns1 address", false);
return 0;
}
if ((argc > 4) && (!inet_aton(argv[6], &dns2))) {
cli->sendMsg(ResponseCode::CommandParameterError, "Invalid dns2 address", false);
return 0;
}
rc = sPppCtrl->attachPppd(argv[2], l, r, dns1, dns2);
} else if (!strcmp(argv[1], "detach")) {
rc = sPppCtrl->detachPppd(argv[2]);
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown pppd cmd", false);
return 0;
}
if (!rc) {
cli->sendMsg(ResponseCode::CommandOkay, "Pppd operation succeeded", false);
} else {
cli->sendMsg(ResponseCode::OperationFailed, "Pppd operation failed", true);
}
return 0;
}
CommandListener::SoftapCmd::SoftapCmd() :
NetdCommand("softap") {
}
int CommandListener::SoftapCmd::runCommand(SocketClient *cli,
int argc, char **argv) {
int rc = ResponseCode::SoftapStatusResult;
int flag = 0;
char *retbuf = NULL;
if (sSoftapCtrl == NULL) {
cli->sendMsg(ResponseCode::ServiceStartFailed, "SoftAP is not available", false);
return -1;
}
if (argc < 2) {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Missing argument in a SoftAP command", false);
return 0;
}
if (!strcmp(argv[1], "startap")) {
rc = sSoftapCtrl->startSoftap();
} else if (!strcmp(argv[1], "stopap")) {
rc = sSoftapCtrl->stopSoftap();
} else if (!strcmp(argv[1], "fwreload")) {
rc = sSoftapCtrl->fwReloadSoftap(argc, argv);
} else if (!strcmp(argv[1], "status")) {
asprintf(&retbuf, "Softap service %s running",
(sSoftapCtrl->isSoftapStarted() ? "is" : "is not"));
cli->sendMsg(rc, retbuf, false);
free(retbuf);
return 0;
} else if (!strcmp(argv[1], "set")) {
rc = sSoftapCtrl->setSoftap(argc, argv);
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unrecognized SoftAP command", false);
return 0;
}
if (rc >= 400 && rc < 600)
cli->sendMsg(rc, "SoftAP command has failed", false);
else
cli->sendMsg(rc, "Ok", false);
return 0;
}
CommandListener::ResolverCmd::ResolverCmd() :
NetdCommand("resolver") {
}
int CommandListener::ResolverCmd::runCommand(SocketClient *cli, int argc, char **margv) {
int rc = 0;
struct in_addr addr;
const char **argv = const_cast<const char **>(margv);
if (argc < 2) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Resolver missing arguments", false);
return 0;
}
if (!strcmp(argv[1], "setdefaultif")) { // "resolver setdefaultif <iface>"
if (argc == 3) {
unsigned netId = sNetCtrl->getNetworkId(argv[2]);
sNetCtrl->setDefaultNetwork(netId);
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Wrong number of arguments to resolver setdefaultif", false);
return 0;
}
} else if (!strcmp(argv[1], "setifdns")) {
// "resolver setifdns <iface> <domains> <dns1> <dns2> ..."
if (argc >= 5) {
unsigned netId = sNetCtrl->getNetworkId(argv[2]);
rc = sResolverCtrl->setDnsServers(netId, argv[3], &argv[4], argc - 4);
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Wrong number of arguments to resolver setifdns", false);
return 0;
}
} else if (!strcmp(argv[1], "flushdefaultif")) { // "resolver flushdefaultif"
if (argc == 2) {
rc = sResolverCtrl->flushDnsCache(sNetCtrl->getDefaultNetwork());
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Wrong number of arguments to resolver flushdefaultif", false);
return 0;
}
} else if (!strcmp(argv[1], "flushif")) { // "resolver flushif <iface>"
if (argc == 3) {
unsigned netId = sNetCtrl->getNetworkId(argv[2]);
rc = sResolverCtrl->flushDnsCache(netId);
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Wrong number of arguments to resolver setdefaultif", false);
return 0;
}
} else if (!strcmp(argv[1], "setifaceforpid")) { // resolver setifaceforpid <iface> <pid>
if (argc == 4) {
unsigned netId = sNetCtrl->getNetworkId(argv[2]);
sNetCtrl->setNetworkForPid(atoi(argv[3]), netId);
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Wrong number of arguments to resolver setifaceforpid", false);