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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 <fcntl.h>
#include <linux/if.h>
#define LOG_TAG "CommandListener"
#include <cutils/log.h>
#include <netutils/ifc.h>
#include <sysutils/SocketClient.h>
#include "CommandListener.h"
#include "ResponseCode.h"
#include "ThrottleController.h"
#include "BandwidthController.h"
#include "IdletimerController.h"
#include "SecondaryTableController.h"
#include "oem_iptables_hook.h"
#include "NetdConstants.h"
#include "FirewallController.h"
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;
/**
* 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,
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* NAT_PREROUTING[] = {
OEM_IPTABLES_NAT_PREROUTING,
NULL,
};
static const char* NAT_POSTROUTING[] = {
NatController::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());
if (!sSecondaryTableCtrl)
sSecondaryTableCtrl = new SecondaryTableController();
if (!sTetherCtrl)
sTetherCtrl = new TetherController();
if (!sNatCtrl)
sNatCtrl = new NatController(sSecondaryTableCtrl);
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();
/*
* 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(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);
}
CommandListener::InterfaceCmd::InterfaceCmd() :
NetdCommand("interface") {
}
int CommandListener::writeFile(const char *path, const char *value, int size) {
int fd = open(path, O_WRONLY);
if (fd < 0) {
ALOGE("Failed to open %s: %s", path, strerror(errno));
return -1;
}
if (write(fd, value, size) != size) {
ALOGE("Failed to write %s: %s", path, strerror(errno));
close(fd);
return -1;
}
close(fd);
return 0;
}
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], "readrxcounter")) {
if (argc != 3) {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Usage: interface readrxcounter <interface>", false);
return 0;
}
unsigned long rx = 0, tx = 0;
if (readInterfaceCounters(argv[2], &rx, &tx)) {
cli->sendMsg(ResponseCode::OperationFailed, "Failed to read counters", true);
return 0;
}
char *msg;
asprintf(&msg, "%lu", rx);
cli->sendMsg(ResponseCode::InterfaceRxCounterResult, msg, false);
free(msg);
return 0;
} else if (!strcmp(argv[1], "readtxcounter")) {
if (argc != 3) {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Usage: interface readtxcounter <interface>", false);
return 0;
}
unsigned long rx = 0, tx = 0;
if (readInterfaceCounters(argv[2], &rx, &tx)) {
cli->sendMsg(ResponseCode::OperationFailed, "Failed to read counters", true);
return 0;
}
char *msg = NULL;
asprintf(&msg, "%lu", tx);
cli->sendMsg(ResponseCode::InterfaceTxCounterResult, msg, false);
free(msg);
return 0;
} else if (!strcmp(argv[1], "getthrottle")) {
if (argc != 4 || (argc == 4 && (strcmp(argv[3], "rx") && (strcmp(argv[3], "tx"))))) {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Usage: interface getthrottle <interface> <rx|tx>", false);
return 0;
}
int val = 0;
int rc = 0;
int voldRc = ResponseCode::InterfaceRxThrottleResult;
if (!strcmp(argv[3], "rx")) {
rc = ThrottleController::getInterfaceRxThrottle(argv[2], &val);
} else {
rc = ThrottleController::getInterfaceTxThrottle(argv[2], &val);
voldRc = ResponseCode::InterfaceTxThrottleResult;
}
if (rc) {
cli->sendMsg(ResponseCode::OperationFailed, "Failed to get throttle", true);
} else {
char *msg = NULL;
asprintf(&msg, "%u", val);
cli->sendMsg(voldRc, msg, false);
free(msg);
return 0;
}
return 0;
} else if (!strcmp(argv[1], "setthrottle")) {
if (argc != 5) {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Usage: interface setthrottle <interface> <rx_kbps> <tx_kbps>", false);
return 0;
}
if (ThrottleController::setInterfaceThrottle(argv[2], atoi(argv[3]), atoi(argv[4]))) {
cli->sendMsg(ResponseCode::OperationFailed, "Failed to set throttle", true);
} else {
cli->sendMsg(ResponseCode::CommandOkay, "Interface throttling set", 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
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;
}
char *tmp;
asprintf(&tmp, "/proc/sys/net/ipv6/conf/%s/use_tempaddr", argv[2]);
if (writeFile(tmp, !strncmp(argv[3], "enable", 7) ? "2" : "0", 1) < 0) {
free(tmp);
cli->sendMsg(ResponseCode::OperationFailed,
"Failed to set ipv6 privacy extensions", true);
return 0;
}
free(tmp);
cli->sendMsg(ResponseCode::CommandOkay, "IPv6 privacy extensions changed", false);
return 0;
} else if (!strcmp(argv[1], "ipv6")) {
if (argc != 4) {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Usage: interface ipv6 <interface> <enable|disable>",
false);
return 0;
}
char *tmp;
asprintf(&tmp, "/proc/sys/net/ipv6/conf/%s/disable_ipv6", argv[2]);
if (writeFile(tmp, !strncmp(argv[3], "enable", 7) ? "0" : "1", 1) < 0) {
free(tmp);
cli->sendMsg(ResponseCode::OperationFailed,
"Failed to change IPv6 state", true);
return 0;
}
free(tmp);
cli->sendMsg(ResponseCode::CommandOkay, "IPv6 state changed", false);
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], "start-reverse")) {
ALOGD("CommandListener::TetherCmd::run, call startReverseTethering, iface:%s", argv[2]);
sTetherCtrl->startReverseTethering(argv[2]);
} else if (!strcmp(argv[1], "stop-reverse")) {
ALOGD("CommandListener::TetherCmd::run, call stopReverseTethering");
rc = sTetherCtrl->stopReverseTethering();
} 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 {
/*
* 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")) {
int lease_time = 0;
if (argc % 2 == 1) {
if (!(lease_time = atoi(argv[argc-1]))) {
cli->sendMsg(ResponseCode::CommandParameterError, "Invalid lease time",
false);
return 0;
}
argc--;
}
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;
}
}
if (lease_time)
rc = sTetherCtrl->startTethering(num_addrs, addrs, lease_time);
else
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")) {
InterfaceCollection *ilist = sTetherCtrl->getTetheredInterfaceList();
InterfaceCollection::iterator it;
for (it = ilist->begin(); it != ilist->end(); ++it) {
cli->sendMsg(ResponseCode::TetherInterfaceListResult, *it, false);
}
} 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")) {
NetAddressCollection *dlist = sTetherCtrl->getDnsForwarders();
NetAddressCollection::iterator it;
for (it = dlist->begin(); it != dlist->end(); ++it) {
cli->sendMsg(ResponseCode::TetherDnsFwdTgtListResult, inet_ntoa(*it), false);
}
} 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, sizeof(struct in_addr), 0);
memset(&dns2, sizeof(struct in_addr), 0);
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 = 0, flag = 0;
char *retbuf = NULL;
if (argc < 2) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Softap Missing argument", 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], "clients")) {
rc = sSoftapCtrl->clientsSoftap(&retbuf);
if (!rc) {
cli->sendMsg(ResponseCode::CommandOkay, retbuf, false);
free(retbuf);
return 0;
}
} else if (!strcmp(argv[1], "status")) {
asprintf(&retbuf, "Softap service %s",
(sSoftapCtrl->isSoftapStarted() ? "started" : "stopped"));
cli->sendMsg(ResponseCode::SoftapStatusResult, retbuf, false);
free(retbuf);
return 0;
} else if (!strcmp(argv[1], "set")) {
rc = sSoftapCtrl->setSoftap(argc, argv);
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Softap Unknown cmd", false);
return 0;
}
if (!rc) {
cli->sendMsg(ResponseCode::CommandOkay, "Softap operation succeeded", false);
} else {
cli->sendMsg(ResponseCode::OperationFailed, "Softap operation failed", true);
}
return 0;
}
CommandListener::ResolverCmd::ResolverCmd() :
NetdCommand("resolver") {
}
int CommandListener::ResolverCmd::runCommand(SocketClient *cli, int argc, char **argv) {
int rc = 0;
struct in_addr addr;
if (argc < 2) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Resolver missing arguments", false);
return 0;
}
if (!strcmp(argv[1], "setdefaultif")) { // "resolver setdefaultif <iface>"
if (argc == 3) {
rc = sResolverCtrl->setDefaultInterface(argv[2]);
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Wrong number of arguments to resolver setdefaultif", false);
return 0;
}
} else if (!strcmp(argv[1], "setifdns")) { // "resolver setifdns <iface> <dns1> <dns2> ..."
if (argc >= 4) {
rc = sResolverCtrl->setInterfaceDnsServers(argv[2], &argv[3], argc - 3);
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Wrong number of arguments to resolver setifdns", false);
return 0;
}
// set the address of the interface to which the name servers
// are bound. Required in order to bind to right interface when
// doing the dns query.
if (!rc) {
ifc_init();
ifc_get_info(argv[2], &addr.s_addr, NULL, 0);
rc = sResolverCtrl->setInterfaceAddress(argv[2], &addr);
}
} else if (!strcmp(argv[1], "flushdefaultif")) { // "resolver flushdefaultif"
if (argc == 2) {
rc = sResolverCtrl->flushDefaultDnsCache();
} 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) {
rc = sResolverCtrl->flushInterfaceDnsCache(argv[2]);
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Wrong number of arguments to resolver setdefaultif", false);
return 0;
}
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError,"Resolver unknown command", false);
return 0;
}
if (!rc) {
cli->sendMsg(ResponseCode::CommandOkay, "Resolver command succeeded", false);
} else {
cli->sendMsg(ResponseCode::OperationFailed, "Resolver command failed", true);
}
return 0;
}
int CommandListener::readInterfaceCounters(const char *iface, unsigned long *rx, unsigned long *tx) {
FILE *fp = fopen("/proc/net/dev", "r");
if (!fp) {
ALOGE("Failed to open /proc/net/dev (%s)", strerror(errno));
return -1;
}
char buffer[512];
fgets(buffer, sizeof(buffer), fp); // Header 1
fgets(buffer, sizeof(buffer), fp); // Header 2
while(fgets(buffer, sizeof(buffer), fp)) {
buffer[strlen(buffer)-1] = '\0';
char name[31];
unsigned long d;
sscanf(buffer, "%30s %lu %lu %lu %lu %lu %lu %lu %lu %lu",
name, rx, &d, &d, &d, &d, &d, &d, &d, tx);
char *rxString = strchr(name, ':');
*rxString = '\0';
rxString++;
// when the rx count gets too big it changes from "name: 999" to "name:1000"
// and the sscanf munge the two together. Detect that and fix
// note that all the %lu will be off by one and the real tx value will be in d
if (*rxString != '\0') {
*tx = d;
sscanf(rxString, "%20lu", rx);
}
if (strcmp(name, iface)) {
continue;
}
fclose(fp);
return 0;
}
fclose(fp);
*rx = 0;
*tx = 0;
return 0;
}
CommandListener::BandwidthControlCmd::BandwidthControlCmd() :
NetdCommand("bandwidth") {
}
void CommandListener::BandwidthControlCmd::sendGenericSyntaxError(SocketClient *cli, const char *usageMsg) {
char *msg;
asprintf(&msg, "Usage: bandwidth %s", usageMsg);
cli->sendMsg(ResponseCode::CommandSyntaxError, msg, false);
free(msg);
}
void CommandListener::BandwidthControlCmd::sendGenericOkFail(SocketClient *cli, int cond) {
if (!cond) {
cli->sendMsg(ResponseCode::CommandOkay, "Bandwidth command succeeeded", false);