server/CommandListener.cpp

   1 /*
   2  * Copyright (C) 2008 The Android Open Source Project
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 // #define LOG_NDEBUG 0
  18
  19 #include <stdlib.h>
  20 #include <sys/socket.h>
  21 #include <sys/types.h>
  22 #include <netinet/in.h>
  23 #include <arpa/inet.h>
  24 #include <dirent.h>
  25 #include <errno.h>
  26 #include <string.h>
  27 #include <linux/if.h>
  28 #include <resolv_netid.h>
  29
  30 #define __STDC_FORMAT_MACROS 1
  31 #include <inttypes.h>
  32
  33 #define LOG_TAG "CommandListener"
  34
  35 #include <cutils/log.h>
  36 #include <netutils/ifc.h>
  37 #include <sysutils/SocketClient.h>
  38
  39 #include "CommandListener.h"
  40 #include "ResponseCode.h"
  41 #include "BandwidthController.h"
  42 #include "IdletimerController.h"
  43 #include "oem_iptables_hook.h"
  44 #include "NetdConstants.h"
  45 #include "FirewallController.h"
  46 #include "RouteController.h"
  47 #include "UidRanges.h"
  48
  49 #include <string>
  50 #include <vector>
  51
  52 namespace {
  53
  54 const unsigned NUM_OEM_IDS = NetworkController::MAX_OEM_ID - NetworkController::MIN_OEM_ID + 1;
  55
  56 Permission stringToPermission(const char* arg) {
  57     if (!strcmp(arg, "NETWORK")) {
  58         return PERMISSION_NETWORK;
  59     }
  60     if (!strcmp(arg, "SYSTEM")) {
  61         return PERMISSION_SYSTEM;
  62     }
  63     return PERMISSION_NONE;
  64 }
  65
  66 unsigned stringToNetId(const char* arg) {
  67     if (!strcmp(arg, "local")) {
  68         return NetworkController::LOCAL_NET_ID;
  69     }
  70     // OEM NetIds are "oem1", "oem2", .., "oem50".
  71     if (!strncmp(arg, "oem", 3)) {
  72         unsigned n = strtoul(arg + 3, NULL, 0);
  73         if (1 <= n && n <= NUM_OEM_IDS) {
  74             return NetworkController::MIN_OEM_ID + n;
  75         }
  76         return NETID_UNSET;
  77     }
  78     // strtoul() returns 0 on errors, which is fine because 0 is an invalid netId.
  79     return strtoul(arg, NULL, 0);
  80 }
  81
  82 }  // namespace
  83
  84 NetworkController *CommandListener::sNetCtrl = NULL;
  85 TetherController *CommandListener::sTetherCtrl = NULL;
  86 NatController *CommandListener::sNatCtrl = NULL;
  87 PppController *CommandListener::sPppCtrl = NULL;
  88 SoftapController *CommandListener::sSoftapCtrl = NULL;
  89 BandwidthController * CommandListener::sBandwidthCtrl = NULL;
  90 IdletimerController * CommandListener::sIdletimerCtrl = NULL;
  91 InterfaceController *CommandListener::sInterfaceCtrl = NULL;
  92 ResolverController *CommandListener::sResolverCtrl = NULL;
  93 FirewallController *CommandListener::sFirewallCtrl = NULL;
  94 ClatdController *CommandListener::sClatdCtrl = NULL;
  95 StrictController *CommandListener::sStrictCtrl = NULL;
  96
  97 /**
  98  * List of module chains to be created, along with explicit ordering. ORDERING
  99  * IS CRITICAL, AND SHOULD BE TRIPLE-CHECKED WITH EACH CHANGE.
 100  */
 101 static const char* FILTER_INPUT[] = {
 102         // Bandwidth should always be early in input chain, to make sure we
 103         // correctly count incoming traffic against data plan.
 104         BandwidthController::LOCAL_INPUT,
 105         FirewallController::LOCAL_INPUT,
 106         NULL,
 107 };
 108
 109 static const char* FILTER_FORWARD[] = {
 110         OEM_IPTABLES_FILTER_FORWARD,
 111         FirewallController::LOCAL_FORWARD,
 112         BandwidthController::LOCAL_FORWARD,
 113         NatController::LOCAL_FORWARD,
 114         NULL,
 115 };
 116
 117 static const char* FILTER_OUTPUT[] = {
 118         OEM_IPTABLES_FILTER_OUTPUT,
 119         FirewallController::LOCAL_OUTPUT,
 120         StrictController::LOCAL_OUTPUT,
 121         BandwidthController::LOCAL_OUTPUT,
 122         NULL,
 123 };
 124
 125 static const char* RAW_PREROUTING[] = {
 126         BandwidthController::LOCAL_RAW_PREROUTING,
 127         IdletimerController::LOCAL_RAW_PREROUTING,
 128         NULL,
 129 };
 130
 131 static const char* MANGLE_POSTROUTING[] = {
 132         BandwidthController::LOCAL_MANGLE_POSTROUTING,
 133         IdletimerController::LOCAL_MANGLE_POSTROUTING,
 134         NULL,
 135 };
 136
 137 static const char* MANGLE_FORWARD[] = {
 138         NatController::LOCAL_MANGLE_FORWARD,
 139         NULL,
 140 };
 141
 142 static const char* NAT_PREROUTING[] = {
 143         OEM_IPTABLES_NAT_PREROUTING,
 144         NULL,
 145 };
 146
 147 static const char* NAT_POSTROUTING[] = {
 148         NatController::LOCAL_NAT_POSTROUTING,
 149         NULL,
 150 };
 151
 152 static void createChildChains(IptablesTarget target, const char* table, const char* parentChain,
 153         const char** childChains) {
 154     const char** childChain = childChains;
 155     do {
 156         // Order is important:
 157         // -D to delete any pre-existing jump rule (removes references
 158         //    that would prevent -X from working)
 159         // -F to flush any existing chain
 160         // -X to delete any existing chain
 161         // -N to create the chain
 162         // -A to append the chain to parent
 163
 164         execIptablesSilently(target, "-t", table, "-D", parentChain, "-j", *childChain, NULL);
 165         execIptablesSilently(target, "-t", table, "-F", *childChain, NULL);
 166         execIptablesSilently(target, "-t", table, "-X", *childChain, NULL);
 167         execIptables(target, "-t", table, "-N", *childChain, NULL);
 168         execIptables(target, "-t", table, "-A", parentChain, "-j", *childChain, NULL);
 169     } while (*(++childChain) != NULL);
 170 }
 171
 172 CommandListener::CommandListener() :
 173                  FrameworkListener("netd", true) {
 174     registerCmd(new InterfaceCmd());
 175     registerCmd(new IpFwdCmd());
 176     registerCmd(new TetherCmd());
 177     registerCmd(new NatCmd());
 178     registerCmd(new ListTtysCmd());
 179     registerCmd(new PppdCmd());
 180     registerCmd(new SoftapCmd());
 181     registerCmd(new BandwidthControlCmd());
 182     registerCmd(new IdletimerControlCmd());
 183     registerCmd(new ResolverCmd());
 184     registerCmd(new FirewallCmd());
 185     registerCmd(new ClatdCmd());
 186     registerCmd(new NetworkCommand());
 187     registerCmd(new StrictCmd());
 188
 189     if (!sNetCtrl)
 190         sNetCtrl = new NetworkController();
 191     if (!sTetherCtrl)
 192         sTetherCtrl = new TetherController();
 193     if (!sNatCtrl)
 194         sNatCtrl = new NatController();
 195     if (!sPppCtrl)
 196         sPppCtrl = new PppController();
 197     if (!sSoftapCtrl)
 198         sSoftapCtrl = new SoftapController();
 199     if (!sBandwidthCtrl)
 200         sBandwidthCtrl = new BandwidthController();
 201     if (!sIdletimerCtrl)
 202         sIdletimerCtrl = new IdletimerController();
 203     if (!sResolverCtrl)
 204         sResolverCtrl = new ResolverController();
 205     if (!sFirewallCtrl)
 206         sFirewallCtrl = new FirewallController();
 207     if (!sInterfaceCtrl)
 208         sInterfaceCtrl = new InterfaceController();
 209     if (!sClatdCtrl)
 210         sClatdCtrl = new ClatdController(sNetCtrl);
 211     if (!sStrictCtrl)
 212         sStrictCtrl = new StrictController();
 213
 214     /*
 215      * This is the only time we touch top-level chains in iptables; controllers
 216      * should only mutate rules inside of their children chains, as created by
 217      * the constants above.
 218      *
 219      * Modules should never ACCEPT packets (except in well-justified cases);
 220      * they should instead defer to any remaining modules using RETURN, or
 221      * otherwise DROP/REJECT.
 222      */
 223
 224     // Create chains for children modules
 225     createChildChains(V4V6, "filter", "INPUT", FILTER_INPUT);
 226     createChildChains(V4V6, "filter", "FORWARD", FILTER_FORWARD);
 227     createChildChains(V4V6, "filter", "OUTPUT", FILTER_OUTPUT);
 228     createChildChains(V4V6, "raw", "PREROUTING", RAW_PREROUTING);
 229     createChildChains(V4V6, "mangle", "POSTROUTING", MANGLE_POSTROUTING);
 230     createChildChains(V4, "mangle", "FORWARD", MANGLE_FORWARD);
 231     createChildChains(V4, "nat", "PREROUTING", NAT_PREROUTING);
 232     createChildChains(V4, "nat", "POSTROUTING", NAT_POSTROUTING);
 233
 234     // Let each module setup their child chains
 235     setupOemIptablesHook();
 236
 237     /* When enabled, DROPs all packets except those matching rules. */
 238     sFirewallCtrl->setupIptablesHooks();
 239
 240     /* Does DROPs in FORWARD by default */
 241     sNatCtrl->setupIptablesHooks();
 242     /*
 243      * Does REJECT in INPUT, OUTPUT. Does counting also.
 244      * No DROP/REJECT allowed later in netfilter-flow hook order.
 245      */
 246     sBandwidthCtrl->setupIptablesHooks();
 247     /*
 248      * Counts in nat: PREROUTING, POSTROUTING.
 249      * No DROP/REJECT allowed later in netfilter-flow hook order.
 250      */
 251     sIdletimerCtrl->setupIptablesHooks();
 252
 253     sBandwidthCtrl->enableBandwidthControl(false);
 254
 255     if (int ret = RouteController::Init(NetworkController::LOCAL_NET_ID)) {
 256         ALOGE("failed to initialize RouteController (%s)", strerror(-ret));
 257     }
 258 }
 259
 260 CommandListener::InterfaceCmd::InterfaceCmd() :
 261                  NetdCommand("interface") {
 262 }
 263
 264 int CommandListener::InterfaceCmd::runCommand(SocketClient *cli,
 265                                                       int argc, char **argv) {
 266     if (argc < 2) {
 267         cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
 268         return 0;
 269     }
 270
 271     if (!strcmp(argv[1], "list")) {
 272         DIR *d;
 273         struct dirent *de;
 274
 275         if (!(d = opendir("/sys/class/net"))) {
 276             cli->sendMsg(ResponseCode::OperationFailed, "Failed to open sysfs dir", true);
 277             return 0;
 278         }
 279
 280         while((de = readdir(d))) {
 281             if (de->d_name[0] == '.')
 282                 continue;
 283             cli->sendMsg(ResponseCode::InterfaceListResult, de->d_name, false);
 284         }
 285         closedir(d);
 286         cli->sendMsg(ResponseCode::CommandOkay, "Interface list completed", false);
 287         return 0;
 288     } else {
 289         /*
 290          * These commands take a minimum of 3 arguments
 291          */
 292         if (argc < 3) {
 293             cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
 294             return 0;
 295         }
 296
 297         if (!strcmp(argv[1], "getcfg")) {
 298             struct in_addr addr;
 299             int prefixLength;
 300             unsigned char hwaddr[6];
 301             unsigned flags = 0;
 302
 303             ifc_init();
 304             memset(hwaddr, 0, sizeof(hwaddr));
 305
 306             if (ifc_get_info(argv[2], &addr.s_addr, &prefixLength, &flags)) {
 307                 cli->sendMsg(ResponseCode::OperationFailed, "Interface not found", true);
 308                 ifc_close();
 309                 return 0;
 310             }
 311
 312             if (ifc_get_hwaddr(argv[2], (void *) hwaddr)) {
 313                 ALOGW("Failed to retrieve HW addr for %s (%s)", argv[2], strerror(errno));
 314             }
 315
 316             char *addr_s = strdup(inet_ntoa(addr));
 317             const char *updown, *brdcst, *loopbk, *ppp, *running, *multi;
 318
 319             updown =  (flags & IFF_UP)           ? "up" : "down";
 320             brdcst =  (flags & IFF_BROADCAST)    ? " broadcast" : "";
 321             loopbk =  (flags & IFF_LOOPBACK)     ? " loopback" : "";
 322             ppp =     (flags & IFF_POINTOPOINT)  ? " point-to-point" : "";
 323             running = (flags & IFF_RUNNING)      ? " running" : "";
 324             multi =   (flags & IFF_MULTICAST)    ? " multicast" : "";
 325
 326             char *flag_s;
 327
 328             asprintf(&flag_s, "%s%s%s%s%s%s", updown, brdcst, loopbk, ppp, running, multi);
 329
 330             char *msg = NULL;
 331             asprintf(&msg, "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x %s %d %s",
 332                      hwaddr[0], hwaddr[1], hwaddr[2], hwaddr[3], hwaddr[4], hwaddr[5],
 333                      addr_s, prefixLength, flag_s);
 334
 335             cli->sendMsg(ResponseCode::InterfaceGetCfgResult, msg, false);
 336
 337             free(addr_s);
 338             free(flag_s);
 339             free(msg);
 340
 341             ifc_close();
 342             return 0;
 343         } else if (!strcmp(argv[1], "setcfg")) {
 344             // arglist: iface [addr prefixLength] flags
 345             if (argc < 4) {
 346                 cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
 347                 return 0;
 348             }
 349             ALOGD("Setting iface cfg");
 350
 351             struct in_addr addr;
 352             int index = 5;
 353
 354             ifc_init();
 355
 356             if (!inet_aton(argv[3], &addr)) {
 357                 // Handle flags only case
 358                 index = 3;
 359             } else {
 360                 if (ifc_set_addr(argv[2], addr.s_addr)) {
 361                     cli->sendMsg(ResponseCode::OperationFailed, "Failed to set address", true);
 362                     ifc_close();
 363                     return 0;
 364                 }
 365
 366                 // Set prefix length on a non zero address
 367                 if (addr.s_addr != 0 && ifc_set_prefixLength(argv[2], atoi(argv[4]))) {
 368                    cli->sendMsg(ResponseCode::OperationFailed, "Failed to set prefixLength", true);
 369                    ifc_close();
 370                    return 0;
 371                }
 372             }
 373
 374             /* Process flags */
 375             for (int i = index; i < argc; i++) {
 376                 char *flag = argv[i];
 377                 if (!strcmp(flag, "up")) {
 378                     ALOGD("Trying to bring up %s", argv[2]);
 379                     if (ifc_up(argv[2])) {
 380                         ALOGE("Error upping interface");
 381                         cli->sendMsg(ResponseCode::OperationFailed, "Failed to up interface", true);
 382                         ifc_close();
 383                         return 0;
 384                     }
 385                 } else if (!strcmp(flag, "down")) {
 386                     ALOGD("Trying to bring down %s", argv[2]);
 387                     if (ifc_down(argv[2])) {
 388                         ALOGE("Error downing interface");
 389                         cli->sendMsg(ResponseCode::OperationFailed, "Failed to down interface", true);
 390                         ifc_close();
 391                         return 0;
 392                     }
 393                 } else if (!strcmp(flag, "broadcast")) {
 394                     // currently ignored
 395                 } else if (!strcmp(flag, "multicast")) {
 396                     // currently ignored
 397                 } else if (!strcmp(flag, "running")) {
 398                     // currently ignored
 399                 } else if (!strcmp(flag, "loopback")) {
 400                     // currently ignored
 401                 } else if (!strcmp(flag, "point-to-point")) {
 402                     // currently ignored
 403                 } else {
 404                     cli->sendMsg(ResponseCode::CommandParameterError, "Flag unsupported", false);
 405                     ifc_close();
 406                     return 0;
 407                 }
 408             }
 409
 410             cli->sendMsg(ResponseCode::CommandOkay, "Interface configuration set", false);
 411             ifc_close();
 412             return 0;
 413         } else if (!strcmp(argv[1], "clearaddrs")) {
 414             // arglist: iface
 415             ALOGD("Clearing all IP addresses on %s", argv[2]);
 416
 417             ifc_clear_addresses(argv[2]);
 418
 419             cli->sendMsg(ResponseCode::CommandOkay, "Interface IP addresses cleared", false);
 420             return 0;
 421         } else if (!strcmp(argv[1], "ipv6privacyextensions")) {
 422             if (argc != 4) {
 423                 cli->sendMsg(ResponseCode::CommandSyntaxError,
 424                         "Usage: interface ipv6privacyextensions <interface> <enable|disable>",
 425                         false);
 426                 return 0;
 427             }
 428             int enable = !strncmp(argv[3], "enable", 7);
 429             if (sInterfaceCtrl->setIPv6PrivacyExtensions(argv[2], enable) == 0) {
 430                 cli->sendMsg(ResponseCode::CommandOkay, "IPv6 privacy extensions changed", false);
 431             } else {
 432                 cli->sendMsg(ResponseCode::OperationFailed,
 433                         "Failed to set ipv6 privacy extensions", true);
 434             }
 435             return 0;
 436         } else if (!strcmp(argv[1], "ipv6")) {
 437             if (argc != 4) {
 438                 cli->sendMsg(ResponseCode::CommandSyntaxError,
 439                         "Usage: interface ipv6 <interface> <enable|disable>",
 440                         false);
 441                 return 0;
 442             }
 443
 444             int enable = !strncmp(argv[3], "enable", 7);
 445             if (sInterfaceCtrl->setEnableIPv6(argv[2], enable) == 0) {
 446                 cli->sendMsg(ResponseCode::CommandOkay, "IPv6 state changed", false);
 447             } else {
 448                 cli->sendMsg(ResponseCode::OperationFailed,
 449                         "Failed to change IPv6 state", true);
 450             }
 451             return 0;
 452         } else if (!strcmp(argv[1], "ipv6ndoffload")) {
 453             if (argc != 4) {
 454                 cli->sendMsg(ResponseCode::CommandSyntaxError,
 455                         "Usage: interface ipv6ndoffload <interface> <enable|disable>",
 456                         false);
 457                 return 0;
 458             }
 459             int enable = !strncmp(argv[3], "enable", 7);
 460             if (sInterfaceCtrl->setIPv6NdOffload(argv[2], enable) == 0) {
 461                 cli->sendMsg(ResponseCode::CommandOkay, "IPv6 ND offload changed", false);
 462             } else {
 463                 cli->sendMsg(ResponseCode::OperationFailed,
 464                         "Failed to change IPv6 ND offload state", true);
 465             }
 466             return 0;
 467         } else if (!strcmp(argv[1], "setmtu")) {
 468             if (argc != 4) {
 469                 cli->sendMsg(ResponseCode::CommandSyntaxError,
 470                         "Usage: interface setmtu <interface> <val>", false);
 471                 return 0;
 472             }
 473             if (sInterfaceCtrl->setMtu(argv[2], argv[3]) == 0) {
 474                 cli->sendMsg(ResponseCode::CommandOkay, "MTU changed", false);
 475             } else {
 476                 cli->sendMsg(ResponseCode::OperationFailed,
 477                         "Failed to set MTU", true);
 478             }
 479             return 0;
 480         } else {
 481             cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown interface cmd", false);
 482             return 0;
 483         }
 484     }
 485     return 0;
 486 }
 487
 488
 489 CommandListener::ListTtysCmd::ListTtysCmd() :
 490                  NetdCommand("list_ttys") {
 491 }
 492
 493 int CommandListener::ListTtysCmd::runCommand(SocketClient *cli,
 494                                              int /* argc */, char ** /* argv */) {
 495     TtyCollection *tlist = sPppCtrl->getTtyList();
 496     TtyCollection::iterator it;
 497
 498     for (it = tlist->begin(); it != tlist->end(); ++it) {
 499         cli->sendMsg(ResponseCode::TtyListResult, *it, false);
 500     }
 501
 502     cli->sendMsg(ResponseCode::CommandOkay, "Ttys listed.", false);
 503     return 0;
 504 }
 505
 506 CommandListener::IpFwdCmd::IpFwdCmd() :
 507                  NetdCommand("ipfwd") {
 508 }
 509
 510 int CommandListener::IpFwdCmd::runCommand(SocketClient *cli, int argc, char **argv) {
 511     bool matched = false;
 512     bool success;
 513
 514     if (argc == 2) {
 515         //   0     1
 516         // ipfwd status
 517         if (!strcmp(argv[1], "status")) {
 518             char *tmp = NULL;
 519
 520             asprintf(&tmp, "Forwarding %s",
 521                      ((sTetherCtrl->forwardingRequestCount() > 0) ? "enabled" : "disabled"));
 522             cli->sendMsg(ResponseCode::IpFwdStatusResult, tmp, false);
 523             free(tmp);
 524             return 0;
 525         }
 526     } else if (argc == 3) {
 527         //  0      1         2
 528         // ipfwd enable  <requester>
 529         // ipfwd disable <requester>
 530         if (!strcmp(argv[1], "enable")) {
 531             matched = true;
 532             success = sTetherCtrl->enableForwarding(argv[2]);
 533         } else if (!strcmp(argv[1], "disable")) {
 534             matched = true;
 535             success = sTetherCtrl->disableForwarding(argv[2]);
 536         }
 537     } else if (argc == 4) {
 538         //  0      1      2     3
 539         // ipfwd  add   wlan0 dummy0
 540         // ipfwd remove wlan0 dummy0
 541         int ret = 0;
 542         if (!strcmp(argv[1], "add")) {
 543             matched = true;
 544             ret = RouteController::enableTethering(argv[2], argv[3]);
 545         } else if (!strcmp(argv[1], "remove")) {
 546             matched = true;
 547             ret = RouteController::disableTethering(argv[2], argv[3]);
 548         }
 549         success = (ret == 0);
 550         errno = -ret;
 551     }
 552
 553     if (!matched) {
 554         cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown ipfwd cmd", false);
 555         return 0;
 556     }
 557
 558     if (success) {
 559         cli->sendMsg(ResponseCode::CommandOkay, "ipfwd operation succeeded", false);
 560     } else {
 561         cli->sendMsg(ResponseCode::OperationFailed, "ipfwd operation failed", true);
 562     }
 563     return 0;
 564 }
 565
 566 CommandListener::TetherCmd::TetherCmd() :
 567                  NetdCommand("tether") {
 568 }
 569
 570 int CommandListener::TetherCmd::runCommand(SocketClient *cli,
 571                                                       int argc, char **argv) {
 572     int rc = 0;
 573
 574     if (argc < 2) {
 575         cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
 576         return 0;
 577     }
 578
 579     if (!strcmp(argv[1], "stop")) {
 580         rc = sTetherCtrl->stopTethering();
 581     } else if (!strcmp(argv[1], "status")) {
 582         char *tmp = NULL;
 583
 584         asprintf(&tmp, "Tethering services %s",
 585                  (sTetherCtrl->isTetheringStarted() ? "started" : "stopped"));
 586         cli->sendMsg(ResponseCode::TetherStatusResult, tmp, false);
 587         free(tmp);
 588         return 0;
 589     } else if (argc == 3) {
 590         if (!strcmp(argv[1], "interface") && !strcmp(argv[2], "list")) {
 591             InterfaceCollection *ilist = sTetherCtrl->getTetheredInterfaceList();
 592             InterfaceCollection::iterator it;
 593             for (it = ilist->begin(); it != ilist->end(); ++it) {
 594                 cli->sendMsg(ResponseCode::TetherInterfaceListResult, *it, false);
 595             }
 596         } else if (!strcmp(argv[1], "dns") && !strcmp(argv[2], "list")) {
 597             char netIdStr[UINT32_STRLEN];
 598             snprintf(netIdStr, sizeof(netIdStr), "%u", sTetherCtrl->getDnsNetId());
 599             cli->sendMsg(ResponseCode::TetherDnsFwdNetIdResult, netIdStr, false);
 600
 601             NetAddressCollection *dlist = sTetherCtrl->getDnsForwarders();
 602             NetAddressCollection::iterator it;
 603
 604             for (it = dlist->begin(); it != dlist->end(); ++it) {
 605                 cli->sendMsg(ResponseCode::TetherDnsFwdTgtListResult, inet_ntoa(*it), false);
 606             }
 607         }
 608     } else {
 609         /*
 610          * These commands take a minimum of 4 arguments
 611          */
 612         if (argc < 4) {
 613             cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
 614             return 0;
 615         }
 616
 617         if (!strcmp(argv[1], "start")) {
 618             if (argc % 2 == 1) {
 619                 cli->sendMsg(ResponseCode::CommandSyntaxError, "Bad number of arguments", false);
 620                 return 0;
 621             }
 622
 623             int num_addrs = argc - 2;
 624             int arg_index = 2;
 625             int array_index = 0;
 626             in_addr *addrs = (in_addr *)malloc(sizeof(in_addr) * num_addrs);
 627             while (array_index < num_addrs) {
 628                 if (!inet_aton(argv[arg_index++], &(addrs[array_index++]))) {
 629                     cli->sendMsg(ResponseCode::CommandParameterError, "Invalid address", false);
 630                     free(addrs);
 631                     return 0;
 632                 }
 633             }
 634             rc = sTetherCtrl->startTethering(num_addrs, addrs);
 635             free(addrs);
 636         } else if (!strcmp(argv[1], "interface")) {
 637             if (!strcmp(argv[2], "add")) {
 638                 rc = sTetherCtrl->tetherInterface(argv[3]);
 639             } else if (!strcmp(argv[2], "remove")) {
 640                 rc = sTetherCtrl->untetherInterface(argv[3]);
 641             /* else if (!strcmp(argv[2], "list")) handled above */
 642             } else {
 643                 cli->sendMsg(ResponseCode::CommandParameterError,
 644                              "Unknown tether interface operation", false);
 645                 return 0;
 646             }
 647         } else if (!strcmp(argv[1], "dns")) {
 648             if (!strcmp(argv[2], "set")) {
 649                 if (argc < 5) {
 650                     cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
 651                     return 0;
 652                 }
 653                 unsigned netId = stringToNetId(argv[3]);
 654                 rc = sTetherCtrl->setDnsForwarders(netId, &argv[4], argc - 4);
 655             /* else if (!strcmp(argv[2], "list")) handled above */
 656             } else {
 657                 cli->sendMsg(ResponseCode::CommandParameterError,
 658                              "Unknown tether interface operation", false);
 659                 return 0;
 660             }
 661         } else {
 662             cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown tether cmd", false);
 663             return 0;
 664         }
 665     }
 666
 667     if (!rc) {
 668         cli->sendMsg(ResponseCode::CommandOkay, "Tether operation succeeded", false);
 669     } else {
 670         cli->sendMsg(ResponseCode::OperationFailed, "Tether operation failed", true);
 671     }
 672
 673     return 0;
 674 }
 675
 676 CommandListener::NatCmd::NatCmd() :
 677                  NetdCommand("nat") {
 678 }
 679
 680 int CommandListener::NatCmd::runCommand(SocketClient *cli,
 681                                                       int argc, char **argv) {
 682     int rc = 0;
 683
 684     if (argc < 5) {
 685         cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
 686         return 0;
 687     }
 688
 689     //  0     1       2        3
 690     // nat  enable intiface extiface
 691     // nat disable intiface extiface
 692     if (!strcmp(argv[1], "enable") && argc >= 4) {
 693         rc = sNatCtrl->enableNat(argv[2], argv[3]);
 694         if(!rc) {
 695             /* Ignore ifaces for now. */
 696             rc = sBandwidthCtrl->setGlobalAlertInForwardChain();
 697         }
 698     } else if (!strcmp(argv[1], "disable") && argc >= 4) {
 699         /* Ignore ifaces for now. */
 700         rc = sBandwidthCtrl->removeGlobalAlertInForwardChain();
 701         rc |= sNatCtrl->disableNat(argv[2], argv[3]);
 702     } else {
 703         cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown nat cmd", false);
 704         return 0;
 705     }
 706
 707     if (!rc) {
 708         cli->sendMsg(ResponseCode::CommandOkay, "Nat operation succeeded", false);
 709     } else {
 710         cli->sendMsg(ResponseCode::OperationFailed, "Nat operation failed", true);
 711     }
 712
 713     return 0;
 714 }
 715
 716 CommandListener::PppdCmd::PppdCmd() :
 717                  NetdCommand("pppd") {
 718 }
 719
 720 int CommandListener::PppdCmd::runCommand(SocketClient *cli,
 721                                                       int argc, char **argv) {
 722     int rc = 0;
 723
 724     if (argc < 3) {
 725         cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
 726         return 0;
 727     }
 728
 729     if (!strcmp(argv[1], "attach")) {
 730         struct in_addr l, r, dns1, dns2;
 731
 732         memset(&dns1, 0, sizeof(struct in_addr));
 733         memset(&dns2, 0, sizeof(struct in_addr));
 734
 735         if (!inet_aton(argv[3], &l)) {
 736             cli->sendMsg(ResponseCode::CommandParameterError, "Invalid local address", false);
 737             return 0;
 738         }
 739         if (!inet_aton(argv[4], &r)) {
 740             cli->sendMsg(ResponseCode::CommandParameterError, "Invalid remote address", false);
 741             return 0;
 742         }
 743         if ((argc > 3) && (!inet_aton(argv[5], &dns1))) {
 744             cli->sendMsg(ResponseCode::CommandParameterError, "Invalid dns1 address", false);
 745             return 0;
 746         }
 747         if ((argc > 4) && (!inet_aton(argv[6], &dns2))) {
 748             cli->sendMsg(ResponseCode::CommandParameterError, "Invalid dns2 address", false);
 749             return 0;
 750         }
 751         rc = sPppCtrl->attachPppd(argv[2], l, r, dns1, dns2);
 752     } else if (!strcmp(argv[1], "detach")) {
 753         rc = sPppCtrl->detachPppd(argv[2]);
 754     } else {
 755         cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown pppd cmd", false);
 756         return 0;
 757     }
 758
 759     if (!rc) {
 760         cli->sendMsg(ResponseCode::CommandOkay, "Pppd operation succeeded", false);
 761     } else {
 762         cli->sendMsg(ResponseCode::OperationFailed, "Pppd operation failed", true);
 763     }
 764
 765     return 0;
 766 }
 767
 768 CommandListener::SoftapCmd::SoftapCmd() :
 769                  NetdCommand("softap") {
 770 }
 771
 772 int CommandListener::SoftapCmd::runCommand(SocketClient *cli,
 773                                         int argc, char **argv) {
 774     int rc = ResponseCode::SoftapStatusResult;
 775     char *retbuf = NULL;
 776
 777     if (sSoftapCtrl == NULL) {
 778       cli->sendMsg(ResponseCode::ServiceStartFailed, "SoftAP is not available", false);
 779       return -1;
 780     }
 781     if (argc < 2) {
 782         cli->sendMsg(ResponseCode::CommandSyntaxError,
 783                      "Missing argument in a SoftAP command", false);
 784         return 0;
 785     }
 786
 787     if (!strcmp(argv[1], "startap")) {
 788         rc = sSoftapCtrl->startSoftap();
 789     } else if (!strcmp(argv[1], "stopap")) {
 790         rc = sSoftapCtrl->stopSoftap();
 791     } else if (!strcmp(argv[1], "fwreload")) {
 792         rc = sSoftapCtrl->fwReloadSoftap(argc, argv);
 793     } else if (!strcmp(argv[1], "status")) {
 794         asprintf(&retbuf, "Softap service %s running",
 795                  (sSoftapCtrl->isSoftapStarted() ? "is" : "is not"));
 796         cli->sendMsg(rc, retbuf, false);
 797         free(retbuf);
 798         return 0;
 799     } else if (!strcmp(argv[1], "set")) {
 800         rc = sSoftapCtrl->setSoftap(argc, argv);
 801     } else {
 802         cli->sendMsg(ResponseCode::CommandSyntaxError, "Unrecognized SoftAP command", false);
 803         return 0;
 804     }
 805
 806     if (rc >= 400 && rc < 600)
 807       cli->sendMsg(rc, "SoftAP command has failed", false);
 808     else
 809       cli->sendMsg(rc, "Ok", false);
 810
 811     return 0;
 812 }
 813
 814 CommandListener::ResolverCmd::ResolverCmd() :
 815         NetdCommand("resolver") {
 816 }
 817
 818 int CommandListener::ResolverCmd::runCommand(SocketClient *cli, int argc, char **margv) {
 819     int rc = 0;
 820     const char **argv = const_cast<const char **>(margv);
 821
 822     if (argc < 3) {
 823         cli->sendMsg(ResponseCode::CommandSyntaxError, "Resolver missing arguments", false);
 824         return 0;
 825     }
 826
 827     unsigned netId = stringToNetId(argv[2]);
 828     // TODO: Consider making NetworkController.isValidNetwork() public
 829     // and making that check here.
 830
 831     if (!strcmp(argv[1], "setnetdns")) {
 832         // "resolver setnetdns <netId> <domains> <dns1> <dns2> ..."
 833         if (argc >= 5) {
 834             rc = sResolverCtrl->setDnsServers(netId, argv[3], &argv[4], argc - 4);
 835         } else {
 836             cli->sendMsg(ResponseCode::CommandSyntaxError,
 837                     "Wrong number of arguments to resolver setnetdns", false);
 838             return 0;
 839         }
 840     } else if (!strcmp(argv[1], "clearnetdns")) { // "resolver clearnetdns <netId>"
 841         if (argc == 3) {
 842             rc = sResolverCtrl->clearDnsServers(netId);
 843         } else {
 844             cli->sendMsg(ResponseCode::CommandSyntaxError,
 845                     "Wrong number of arguments to resolver clearnetdns", false);
 846             return 0;
 847         }
 848     } else if (!strcmp(argv[1], "flushnet")) { // "resolver flushnet <netId>"
 849         if (argc == 3) {
 850             rc = sResolverCtrl->flushDnsCache(netId);
 851         } else {
 852             cli->sendMsg(ResponseCode::CommandSyntaxError,
 853                     "Wrong number of arguments to resolver flushnet", false);
 854             return 0;
 855         }
 856     } else {
 857         cli->sendMsg(ResponseCode::CommandSyntaxError,"Resolver unknown command", false);
 858         return 0;
 859     }
 860
 861     if (!rc) {
 862         cli->sendMsg(ResponseCode::CommandOkay, "Resolver command succeeded", false);
 863     } else {
 864         cli->sendMsg(ResponseCode::OperationFailed, "Resolver command failed", true);
 865     }
 866
 867     return 0;
 868 }
 869
 870 CommandListener::BandwidthControlCmd::BandwidthControlCmd() :
 871     NetdCommand("bandwidth") {
 872 }
 873
 874 void CommandListener::BandwidthControlCmd::sendGenericSyntaxError(SocketClient *cli, const char *usageMsg) {
 875     char *msg;
 876     asprintf(&msg, "Usage: bandwidth %s", usageMsg);
 877     cli->sendMsg(ResponseCode::CommandSyntaxError, msg, false);
 878     free(msg);
 879 }
 880
 881 void CommandListener::BandwidthControlCmd::sendGenericOkFail(SocketClient *cli, int cond) {
 882     if (!cond) {
 883         cli->sendMsg(ResponseCode::CommandOkay, "Bandwidth command succeeeded", false);
 884     } else {
 885         cli->sendMsg(ResponseCode::OperationFailed, "Bandwidth command failed", false);
 886     }
 887 }
 888
 889 void CommandListener::BandwidthControlCmd::sendGenericOpFailed(SocketClient *cli, const char *errMsg) {
 890     cli->sendMsg(ResponseCode::OperationFailed, errMsg, false);
 891 }
 892
 893 int CommandListener::BandwidthControlCmd::runCommand(SocketClient *cli, int argc, char **argv) {
 894     if (argc < 2) {
 895         sendGenericSyntaxError(cli, "<cmds> <args...>");
 896         return 0;
 897     }
 898
 899     ALOGV("bwctrlcmd: argc=%d %s %s ...", argc, argv[0], argv[1]);
 900
 901     if (!strcmp(argv[1], "enable")) {
 902         int rc = sBandwidthCtrl->enableBandwidthControl(true);
 903         sendGenericOkFail(cli, rc);
 904         return 0;
 905
 906     }
 907     if (!strcmp(argv[1], "disable")) {
 908         int rc = sBandwidthCtrl->disableBandwidthControl();
 909         sendGenericOkFail(cli, rc);
 910         return 0;
 911
 912     }
 913     if (!strcmp(argv[1], "removequota") || !strcmp(argv[1], "rq")) {
 914         if (argc != 3) {
 915             sendGenericSyntaxError(cli, "removequota <interface>");
 916             return 0;
 917         }
 918         int rc = sBandwidthCtrl->removeInterfaceSharedQuota(argv[2]);
 919         sendGenericOkFail(cli, rc);
 920         return 0;
 921
 922     }
 923     if (!strcmp(argv[1], "getquota") || !strcmp(argv[1], "gq")) {
 924         int64_t bytes;
 925         if (argc != 2) {
 926             sendGenericSyntaxError(cli, "getquota");
 927             return 0;
 928         }
 929         int rc = sBandwidthCtrl->getInterfaceSharedQuota(&bytes);
 930         if (rc) {
 931             sendGenericOpFailed(cli, "Failed to get quota");
 932             return 0;
 933         }
 934
 935         char *msg;
 936         asprintf(&msg, "%" PRId64, bytes);
 937         cli->sendMsg(ResponseCode::QuotaCounterResult, msg, false);
 938         free(msg);
 939         return 0;
 940
 941     }
 942     if (!strcmp(argv[1], "getiquota") || !strcmp(argv[1], "giq")) {
 943         int64_t bytes;
 944         if (argc != 3) {
 945             sendGenericSyntaxError(cli, "getiquota <iface>");
 946             return 0;
 947         }
 948
 949         int rc = sBandwidthCtrl->getInterfaceQuota(argv[2], &bytes);
 950         if (rc) {
 951             sendGenericOpFailed(cli, "Failed to get quota");
 952             return 0;
 953         }
 954         char *msg;
 955         asprintf(&msg, "%" PRId64, bytes);
 956         cli->sendMsg(ResponseCode::QuotaCounterResult, msg, false);
 957         free(msg);
 958         return 0;
 959
 960     }
 961     if (!strcmp(argv[1], "setquota") || !strcmp(argv[1], "sq")) {
 962         if (argc != 4) {
 963             sendGenericSyntaxError(cli, "setquota <interface> <bytes>");
 964             return 0;
 965         }
 966         int rc = sBandwidthCtrl->setInterfaceSharedQuota(argv[2], atoll(argv[3]));
 967         sendGenericOkFail(cli, rc);
 968         return 0;
 969     }
 970     if (!strcmp(argv[1], "setquotas") || !strcmp(argv[1], "sqs")) {
 971         int rc;
 972         if (argc < 4) {
 973             sendGenericSyntaxError(cli, "setquotas <bytes> <interface> ...");
 974             return 0;
 975         }
 976
 977         for (int q = 3; argc >= 4; q++, argc--) {
 978             rc = sBandwidthCtrl->setInterfaceSharedQuota(argv[q], atoll(argv[2]));
 979             if (rc) {
 980                 char *msg;
 981                 asprintf(&msg, "bandwidth setquotas %s %s failed", argv[2], argv[q]);
 982                 cli->sendMsg(ResponseCode::OperationFailed,
 983                              msg, false);
 984                 free(msg);
 985                 return 0;
 986             }
 987         }
 988         sendGenericOkFail(cli, rc);
 989         return 0;
 990
 991     }
 992     if (!strcmp(argv[1], "removequotas") || !strcmp(argv[1], "rqs")) {
 993         int rc;
 994         if (argc < 3) {
 995             sendGenericSyntaxError(cli, "removequotas <interface> ...");
 996             return 0;
 997         }
 998
 999         for (int q = 2; argc >= 3; q++, argc--) {
1000             rc = sBandwidthCtrl->removeInterfaceSharedQuota(argv[q]);
1001             if (rc) {
1002                 char *msg;
1003                 asprintf(&msg, "bandwidth removequotas %s failed", argv[q]);
1004                 cli->sendMsg(ResponseCode::OperationFailed,
1005                              msg, false);
1006                 free(msg);
1007                 return 0;
1008             }
1009         }
1010         sendGenericOkFail(cli, rc);
1011         return 0;
1012
1013     }
1014     if (!strcmp(argv[1], "removeiquota") || !strcmp(argv[1], "riq")) {
1015         if (argc != 3) {
1016             sendGenericSyntaxError(cli, "removeiquota <interface>");
1017             return 0;
1018         }
1019         int rc = sBandwidthCtrl->removeInterfaceQuota(argv[2]);
1020         sendGenericOkFail(cli, rc);
1021         return 0;
1022
1023     }
1024     if (!strcmp(argv[1], "setiquota") || !strcmp(argv[1], "siq")) {
1025         if (argc != 4) {
1026             sendGenericSyntaxError(cli, "setiquota <interface> <bytes>");
1027             return 0;
1028         }
1029         int rc = sBandwidthCtrl->setInterfaceQuota(argv[2], atoll(argv[3]));
1030         sendGenericOkFail(cli, rc);
1031         return 0;
1032
1033     }
1034     if (!strcmp(argv[1], "addnaughtyapps") || !strcmp(argv[1], "ana")) {
1035         if (argc < 3) {
1036             sendGenericSyntaxError(cli, "addnaughtyapps <appUid> ...");
1037             return 0;
1038         }
1039         int rc = sBandwidthCtrl->addNaughtyApps(argc - 2, argv + 2);
1040         sendGenericOkFail(cli, rc);
1041         return 0;
1042
1043
1044     }
1045     if (!strcmp(argv[1], "removenaughtyapps") || !strcmp(argv[1], "rna")) {
1046         if (argc < 3) {
1047             sendGenericSyntaxError(cli, "removenaughtyapps <appUid> ...");
1048             return 0;
1049         }
1050         int rc = sBandwidthCtrl->removeNaughtyApps(argc - 2, argv + 2);
1051         sendGenericOkFail(cli, rc);
1052         return 0;
1053     }
1054     if (!strcmp(argv[1], "happybox")) {
1055         if (argc < 3) {
1056             sendGenericSyntaxError(cli, "happybox (enable | disable)");
1057             return 0;
1058         }
1059         if (!strcmp(argv[2], "enable")) {
1060             int rc = sBandwidthCtrl->enableHappyBox();
1061             sendGenericOkFail(cli, rc);
1062             return 0;
1063
1064         }
1065         if (!strcmp(argv[2], "disable")) {
1066             int rc = sBandwidthCtrl->disableHappyBox();
1067             sendGenericOkFail(cli, rc);
1068             return 0;
1069         }
1070         sendGenericSyntaxError(cli, "happybox (enable | disable)");
1071         return 0;
1072     }
1073     if (!strcmp(argv[1], "addniceapps") || !strcmp(argv[1], "aha")) {
1074         if (argc < 3) {
1075             sendGenericSyntaxError(cli, "addniceapps <appUid> ...");
1076             return 0;
1077         }
1078         int rc = sBandwidthCtrl->addNiceApps(argc - 2, argv + 2);
1079         sendGenericOkFail(cli, rc);
1080         return 0;
1081     }
1082     if (!strcmp(argv[1], "removeniceapps") || !strcmp(argv[1], "rha")) {
1083         if (argc < 3) {
1084             sendGenericSyntaxError(cli, "removeniceapps <appUid> ...");
1085             return 0;
1086         }
1087         int rc = sBandwidthCtrl->removeNiceApps(argc - 2, argv + 2);
1088         sendGenericOkFail(cli, rc);
1089         return 0;
1090     }
1091     if (!strcmp(argv[1], "setglobalalert") || !strcmp(argv[1], "sga")) {
1092         if (argc != 3) {
1093             sendGenericSyntaxError(cli, "setglobalalert <bytes>");
1094             return 0;
1095         }
1096         int rc = sBandwidthCtrl->setGlobalAlert(atoll(argv[2]));
1097         sendGenericOkFail(cli, rc);
1098         return 0;
1099     }
1100     if (!strcmp(argv[1], "debugsettetherglobalalert") || !strcmp(argv[1], "dstga")) {
1101         if (argc != 4) {
1102             sendGenericSyntaxError(cli, "debugsettetherglobalalert <interface0> <interface1>");
1103             return 0;
1104         }
1105         /* We ignore the interfaces for now. */
1106         int rc = sBandwidthCtrl->setGlobalAlertInForwardChain();
1107         sendGenericOkFail(cli, rc);
1108         return 0;
1109
1110     }
1111     if (!strcmp(argv[1], "removeglobalalert") || !strcmp(argv[1], "rga")) {
1112         if (argc != 2) {
1113             sendGenericSyntaxError(cli, "removeglobalalert");
1114             return 0;
1115         }
1116         int rc = sBandwidthCtrl->removeGlobalAlert();
1117         sendGenericOkFail(cli, rc);
1118         return 0;
1119
1120     }
1121     if (!strcmp(argv[1], "debugremovetetherglobalalert") || !strcmp(argv[1], "drtga")) {
1122         if (argc != 4) {
1123             sendGenericSyntaxError(cli, "debugremovetetherglobalalert <interface0> <interface1>");
1124             return 0;
1125         }
1126         /* We ignore the interfaces for now. */
1127         int rc = sBandwidthCtrl->removeGlobalAlertInForwardChain();
1128         sendGenericOkFail(cli, rc);
1129         return 0;
1130
1131     }
1132     if (!strcmp(argv[1], "setsharedalert") || !strcmp(argv[1], "ssa")) {
1133         if (argc != 3) {
1134             sendGenericSyntaxError(cli, "setsharedalert <bytes>");
1135             return 0;
1136         }
1137         int rc = sBandwidthCtrl->setSharedAlert(atoll(argv[2]));
1138         sendGenericOkFail(cli, rc);
1139         return 0;
1140
1141     }
1142     if (!strcmp(argv[1], "removesharedalert") || !strcmp(argv[1], "rsa")) {
1143         if (argc != 2) {
1144             sendGenericSyntaxError(cli, "removesharedalert");
1145             return 0;
1146         }
1147         int rc = sBandwidthCtrl->removeSharedAlert();
1148         sendGenericOkFail(cli, rc);
1149         return 0;
1150
1151     }
1152     if (!strcmp(argv[1], "setinterfacealert") || !strcmp(argv[1], "sia")) {
1153         if (argc != 4) {
1154             sendGenericSyntaxError(cli, "setinterfacealert <interface> <bytes>");
1155             return 0;
1156         }
1157         int rc = sBandwidthCtrl->setInterfaceAlert(argv[2], atoll(argv[3]));
1158         sendGenericOkFail(cli, rc);
1159         return 0;
1160
1161     }
1162     if (!strcmp(argv[1], "removeinterfacealert") || !strcmp(argv[1], "ria")) {
1163         if (argc != 3) {
1164             sendGenericSyntaxError(cli, "removeinterfacealert <interface>");
1165             return 0;
1166         }
1167         int rc = sBandwidthCtrl->removeInterfaceAlert(argv[2]);
1168         sendGenericOkFail(cli, rc);
1169         return 0;
1170
1171     }
1172     if (!strcmp(argv[1], "gettetherstats") || !strcmp(argv[1], "gts")) {
1173         BandwidthController::TetherStats tetherStats;
1174         std::string extraProcessingInfo = "";
1175         if (argc < 2 || argc > 4) {
1176             sendGenericSyntaxError(cli, "gettetherstats [<intInterface> <extInterface>]");
1177             return 0;
1178         }
1179         tetherStats.intIface = argc > 2 ? argv[2] : "";
1180         tetherStats.extIface = argc > 3 ? argv[3] : "";
1181         // No filtering requested and there are no interface pairs to lookup.
1182         if (argc <= 2 && sNatCtrl->ifacePairList.empty()) {
1183             cli->sendMsg(ResponseCode::CommandOkay, "Tethering stats list completed", false);
1184             return 0;
1185         }
1186         int rc = sBandwidthCtrl->getTetherStats(cli, tetherStats, extraProcessingInfo);
1187         if (rc) {
1188                 extraProcessingInfo.insert(0, "Failed to get tethering stats.\n");
1189                 sendGenericOpFailed(cli, extraProcessingInfo.c_str());
1190                 return 0;
1191         }
1192         return 0;
1193
1194     }
1195
1196     cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown bandwidth cmd", false);
1197     return 0;
1198 }
1199
1200 CommandListener::IdletimerControlCmd::IdletimerControlCmd() :
1201     NetdCommand("idletimer") {
1202 }
1203
1204 int CommandListener::IdletimerControlCmd::runCommand(SocketClient *cli, int argc, char **argv) {
1205   // TODO(ashish): Change the error statements
1206     if (argc < 2) {
1207         cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
1208         return 0;
1209     }
1210
1211     ALOGV("idletimerctrlcmd: argc=%d %s %s ...", argc, argv[0], argv[1]);
1212
1213     if (!strcmp(argv[1], "enable")) {
1214       if (0 != sIdletimerCtrl->enableIdletimerControl()) {
1215         cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
1216       } else {
1217         cli->sendMsg(ResponseCode::CommandOkay, "Enable success", false);
1218       }
1219       return 0;
1220
1221     }
1222     if (!strcmp(argv[1], "disable")) {
1223       if (0 != sIdletimerCtrl->disableIdletimerControl()) {
1224         cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
1225       } else {
1226         cli->sendMsg(ResponseCode::CommandOkay, "Disable success", false);
1227       }
1228       return 0;
1229     }
1230     if (!strcmp(argv[1], "add")) {
1231         if (argc != 5) {
1232             cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
1233             return 0;
1234         }
1235         if(0 != sIdletimerCtrl->addInterfaceIdletimer(
1236                                         argv[2], atoi(argv[3]), argv[4])) {
1237           cli->sendMsg(ResponseCode::OperationFailed, "Failed to add interface", false);
1238         } else {
1239           cli->sendMsg(ResponseCode::CommandOkay,  "Add success", false);
1240         }
1241         return 0;
1242     }
1243     if (!strcmp(argv[1], "remove")) {
1244         if (argc != 5) {
1245             cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
1246             return 0;
1247         }
1248         // ashish: fixme timeout
1249         if (0 != sIdletimerCtrl->removeInterfaceIdletimer(
1250                                         argv[2], atoi(argv[3]), argv[4])) {
1251           cli->sendMsg(ResponseCode::OperationFailed, "Failed to remove interface", false);
1252         } else {
1253           cli->sendMsg(ResponseCode::CommandOkay, "Remove success", false);
1254         }
1255         return 0;
1256     }
1257
1258     cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown idletimer cmd", false);
1259     return 0;
1260 }
1261
1262 CommandListener::FirewallCmd::FirewallCmd() :
1263     NetdCommand("firewall") {
1264 }
1265
1266 int CommandListener::FirewallCmd::sendGenericOkFail(SocketClient *cli, int cond) {
1267     if (!cond) {
1268         cli->sendMsg(ResponseCode::CommandOkay, "Firewall command succeeded", false);
1269     } else {
1270         cli->sendMsg(ResponseCode::OperationFailed, "Firewall command failed", false);
1271     }
1272     return 0;
1273 }
1274
1275 FirewallRule CommandListener::FirewallCmd::parseRule(const char* arg) {
1276     if (!strcmp(arg, "allow")) {
1277         return ALLOW;
1278     } else if (!strcmp(arg, "deny")) {
1279         return DENY;
1280     } else {
1281         ALOGE("failed to parse uid rule (%s)", arg);
1282         return ALLOW;
1283     }
1284 }
1285
1286 FirewallType CommandListener::FirewallCmd::parseFirewallType(const char* arg) {
1287     if (!strcmp(arg, "whitelist")) {
1288         return WHITELIST;
1289     } else if (!strcmp(arg, "blacklist")) {
1290         return BLACKLIST;
1291     } else {
1292         ALOGE("failed to parse firewall type (%s)", arg);
1293         return BLACKLIST;
1294     }
1295 }
1296
1297 ChildChain CommandListener::FirewallCmd::parseChildChain(const char* arg) {
1298     if (!strcmp(arg, "dozable")) {
1299         return DOZABLE;
1300     } else if (!strcmp(arg, "standby")) {
1301         return STANDBY;
1302     } else if (!strcmp(arg, "none")) {
1303         return NONE;
1304     } else {
1305         ALOGE("failed to parse child firewall chain (%s)", arg);
1306         return INVALID_CHAIN;
1307     }
1308 }
1309
1310 int CommandListener::FirewallCmd::runCommand(SocketClient *cli, int argc,
1311         char **argv) {
1312     if (argc < 2) {
1313         cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing command", false);
1314         return 0;
1315     }
1316
1317     if (!strcmp(argv[1], "enable")) {
1318         if (argc != 3) {
1319             cli->sendMsg(ResponseCode::CommandSyntaxError,
1320                         "Usage: firewall enable <whitelist|blacklist>", false);
1321             return 0;
1322         }
1323         FirewallType firewallType = parseFirewallType(argv[2]);
1324
1325         int res = sFirewallCtrl->enableFirewall(firewallType);
1326         return sendGenericOkFail(cli, res);
1327     }
1328     if (!strcmp(argv[1], "disable")) {
1329         int res = sFirewallCtrl->disableFirewall();
1330         return sendGenericOkFail(cli, res);
1331     }
1332     if (!strcmp(argv[1], "is_enabled")) {
1333         int res = sFirewallCtrl->isFirewallEnabled();
1334         return sendGenericOkFail(cli, res);
1335     }
1336
1337     if (!strcmp(argv[1], "set_interface_rule")) {
1338         if (argc != 4) {
1339             cli->sendMsg(ResponseCode::CommandSyntaxError,
1340                          "Usage: firewall set_interface_rule <rmnet0> <allow|deny>", false);
1341             return 0;
1342         }
1343
1344         const char* iface = argv[2];
1345         FirewallRule rule = parseRule(argv[3]);
1346
1347         int res = sFirewallCtrl->setInterfaceRule(iface, rule);
1348         return sendGenericOkFail(cli, res);
1349     }
1350
1351     if (!strcmp(argv[1], "set_egress_source_rule")) {
1352         if (argc != 4) {
1353             cli->sendMsg(ResponseCode::CommandSyntaxError,
1354                          "Usage: firewall set_egress_source_rule <192.168.0.1> <allow|deny>",
1355                          false);
1356             return 0;
1357         }
1358
1359         const char* addr = argv[2];
1360         FirewallRule rule = parseRule(argv[3]);
1361
1362         int res = sFirewallCtrl->setEgressSourceRule(addr, rule);
1363         return sendGenericOkFail(cli, res);
1364     }
1365
1366     if (!strcmp(argv[1], "set_egress_dest_rule")) {
1367         if (argc != 5) {
1368             cli->sendMsg(ResponseCode::CommandSyntaxError,
1369                          "Usage: firewall set_egress_dest_rule <192.168.0.1> <80> <allow|deny>",
1370                          false);
1371             return 0;
1372         }
1373
1374         const char* addr = argv[2];
1375         int port = atoi(argv[3]);
1376         FirewallRule rule = parseRule(argv[4]);
1377
1378         int res = 0;
1379         res |= sFirewallCtrl->setEgressDestRule(addr, PROTOCOL_TCP, port, rule);
1380         res |= sFirewallCtrl->setEgressDestRule(addr, PROTOCOL_UDP, port, rule);
1381         return sendGenericOkFail(cli, res);
1382     }
1383
1384     if (!strcmp(argv[1], "set_uid_rule")) {
1385         if (argc != 5) {
1386             cli->sendMsg(ResponseCode::CommandSyntaxError,
1387                          "Usage: firewall set_uid_rule <dozable|standby|none> <1000> <allow|deny>",
1388                          false);
1389             return 0;
1390         }
1391
1392         ChildChain childChain = parseChildChain(argv[2]);
1393         if (childChain == INVALID_CHAIN) {
1394             cli->sendMsg(ResponseCode::CommandSyntaxError,
1395                          "Invalid chain name. Valid names are: <dozable|standby|none>",
1396                          false);
1397             return 0;
1398         }
1399         int uid = atoi(argv[3]);
1400         FirewallRule rule = parseRule(argv[4]);
1401         int res = sFirewallCtrl->setUidRule(childChain, uid, rule);
1402         return sendGenericOkFail(cli, res);
1403     }
1404
1405     if (!strcmp(argv[1], "enable_chain")) {
1406         if (argc != 3) {
1407             cli->sendMsg(ResponseCode::CommandSyntaxError,
1408                          "Usage: firewall enable_chain <dozable|standby>",
1409                          false);
1410             return 0;
1411         }
1412
1413         ChildChain childChain = parseChildChain(argv[2]);
1414         int res = sFirewallCtrl->enableChildChains(childChain, true);
1415         return sendGenericOkFail(cli, res);
1416     }
1417
1418     if (!strcmp(argv[1], "disable_chain")) {
1419         if (argc != 3) {
1420             cli->sendMsg(ResponseCode::CommandSyntaxError,
1421                          "Usage: firewall disable_chain <dozable|standby>",
1422                          false);
1423             return 0;
1424         }
1425
1426         ChildChain childChain = parseChildChain(argv[2]);
1427         int res = sFirewallCtrl->enableChildChains(childChain, false);
1428         return sendGenericOkFail(cli, res);
1429     }
1430
1431     cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown command", false);
1432     return 0;
1433 }
1434
1435 CommandListener::ClatdCmd::ClatdCmd() : NetdCommand("clatd") {
1436 }
1437
1438 int CommandListener::ClatdCmd::runCommand(SocketClient *cli, int argc,
1439                                                             char **argv) {
1440     int rc = 0;
1441     if (argc < 3) {
1442         cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
1443         return 0;
1444     }
1445
1446     if (!strcmp(argv[1], "stop")) {
1447         rc = sClatdCtrl->stopClatd(argv[2]);
1448     } else if (!strcmp(argv[1], "status")) {
1449         char *tmp = NULL;
1450         asprintf(&tmp, "Clatd status: %s", (sClatdCtrl->isClatdStarted(argv[2]) ?
1451                                             "started" : "stopped"));
1452         cli->sendMsg(ResponseCode::ClatdStatusResult, tmp, false);
1453         free(tmp);
1454         return 0;
1455     } else if (!strcmp(argv[1], "start")) {
1456         rc = sClatdCtrl->startClatd(argv[2]);
1457     } else {
1458         cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown clatd cmd", false);
1459         return 0;
1460     }
1461
1462     if (!rc) {
1463         cli->sendMsg(ResponseCode::CommandOkay, "Clatd operation succeeded", false);
1464     } else {
1465         cli->sendMsg(ResponseCode::OperationFailed, "Clatd operation failed", false);
1466     }
1467
1468     return 0;
1469 }
1470
1471 CommandListener::StrictCmd::StrictCmd() :
1472     NetdCommand("strict") {
1473 }
1474
1475 int CommandListener::StrictCmd::sendGenericOkFail(SocketClient *cli, int cond) {
1476     if (!cond) {
1477         cli->sendMsg(ResponseCode::CommandOkay, "Strict command succeeded", false);
1478     } else {
1479         cli->sendMsg(ResponseCode::OperationFailed, "Strict command failed", false);
1480     }
1481     return 0;
1482 }
1483
1484 StrictPenalty CommandListener::StrictCmd::parsePenalty(const char* arg) {
1485     if (!strcmp(arg, "reject")) {
1486         return REJECT;
1487     } else if (!strcmp(arg, "log")) {
1488         return LOG;
1489     } else if (!strcmp(arg, "accept")) {
1490         return ACCEPT;
1491     } else {
1492         return INVALID;
1493     }
1494 }
1495
1496 int CommandListener::StrictCmd::runCommand(SocketClient *cli, int argc,
1497         char **argv) {
1498     if (argc < 2) {
1499         cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing command", false);
1500         return 0;
1501     }
1502
1503     if (!strcmp(argv[1], "enable")) {
1504         int res = sStrictCtrl->enableStrict();
1505         return sendGenericOkFail(cli, res);
1506     }
1507     if (!strcmp(argv[1], "disable")) {
1508         int res = sStrictCtrl->disableStrict();
1509         return sendGenericOkFail(cli, res);
1510     }
1511
1512     if (!strcmp(argv[1], "set_uid_cleartext_policy")) {
1513         if (argc != 4) {
1514             cli->sendMsg(ResponseCode::CommandSyntaxError,
1515                          "Usage: strict set_uid_cleartext_policy <uid> <accept|log|reject>",
1516                          false);
1517             return 0;
1518         }
1519
1520         errno = 0;
1521         unsigned long int uid = strtoul(argv[2], NULL, 0);
1522         if (errno || uid > UID_MAX) {
1523             cli->sendMsg(ResponseCode::CommandSyntaxError, "Invalid UID", false);
1524             return 0;
1525         }
1526
1527         StrictPenalty penalty = parsePenalty(argv[3]);
1528         if (penalty == INVALID) {
1529             cli->sendMsg(ResponseCode::CommandSyntaxError, "Invalid penalty argument", false);
1530             return 0;
1531         }
1532
1533         int res = sStrictCtrl->setUidCleartextPenalty((uid_t) uid, penalty);
1534         return sendGenericOkFail(cli, res);
1535     }
1536
1537     cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown command", false);
1538     return 0;
1539 }
1540
1541 CommandListener::NetworkCommand::NetworkCommand() : NetdCommand("network") {
1542 }
1543
1544 int CommandListener::NetworkCommand::syntaxError(SocketClient* client, const char* message) {
1545     client->sendMsg(ResponseCode::CommandSyntaxError, message, false);
1546     return 0;
1547 }
1548
1549 int CommandListener::NetworkCommand::operationError(SocketClient* client, const char* message,
1550                                                     int ret) {
1551     errno = -ret;
1552     client->sendMsg(ResponseCode::OperationFailed, message, true);
1553     return 0;
1554 }
1555
1556 int CommandListener::NetworkCommand::success(SocketClient* client) {
1557     client->sendMsg(ResponseCode::CommandOkay, "success", false);
1558     return 0;
1559 }
1560
1561 int CommandListener::NetworkCommand::runCommand(SocketClient* client, int argc, char** argv) {
1562     if (argc < 2) {
1563         return syntaxError(client, "Missing argument");
1564     }
1565
1566     //    0      1      2      3      4       5         6            7           8
1567     // network route [legacy <uid>]  add   <netId> <interface> <destination> [nexthop]
1568     // network route [legacy <uid>] remove <netId> <interface> <destination> [nexthop]
1569     //
1570     // nexthop may be either an IPv4/IPv6 address or one of "unreachable" or "throw".
1571     if (!strcmp(argv[1], "route")) {
1572         if (argc < 6 || argc > 9) {
1573             return syntaxError(client, "Incorrect number of arguments");
1574         }
1575
1576         int nextArg = 2;
1577         bool legacy = false;
1578         uid_t uid = 0;
1579         if (!strcmp(argv[nextArg], "legacy")) {
1580             ++nextArg;
1581             legacy = true;
1582             uid = strtoul(argv[nextArg++], NULL, 0);
1583         }
1584
1585         bool add = false;
1586         if (!strcmp(argv[nextArg], "add")) {
1587             add = true;
1588         } else if (strcmp(argv[nextArg], "remove")) {
1589             return syntaxError(client, "Unknown argument");
1590         }
1591         ++nextArg;
1592
1593         if (argc < nextArg + 3 || argc > nextArg + 4) {
1594             return syntaxError(client, "Incorrect number of arguments");
1595         }
1596
1597         unsigned netId = stringToNetId(argv[nextArg++]);
1598         const char* interface = argv[nextArg++];
1599         const char* destination = argv[nextArg++];
1600         const char* nexthop = argc > nextArg ? argv[nextArg] : NULL;
1601
1602         int ret;
1603         if (add) {
1604             ret = sNetCtrl->addRoute(netId, interface, destination, nexthop, legacy, uid);
1605         } else {
1606             ret = sNetCtrl->removeRoute(netId, interface, destination, nexthop, legacy, uid);
1607         }
1608         if (ret) {
1609             return operationError(client, add ? "addRoute() failed" : "removeRoute() failed", ret);
1610         }
1611
1612         return success(client);
1613     }
1614
1615     //    0        1       2       3         4
1616     // network interface  add   <netId> <interface>
1617     // network interface remove <netId> <interface>
1618     if (!strcmp(argv[1], "interface")) {
1619         if (argc != 5) {
1620             return syntaxError(client, "Missing argument");
1621         }
1622         unsigned netId = stringToNetId(argv[3]);
1623         if (!strcmp(argv[2], "add")) {
1624             if (int ret = sNetCtrl->addInterfaceToNetwork(netId, argv[4])) {
1625                 return operationError(client, "addInterfaceToNetwork() failed", ret);
1626             }
1627         } else if (!strcmp(argv[2], "remove")) {
1628             if (int ret = sNetCtrl->removeInterfaceFromNetwork(netId, argv[4])) {
1629                 return operationError(client, "removeInterfaceFromNetwork() failed", ret);
1630             }
1631         } else {
1632             return syntaxError(client, "Unknown argument");
1633         }
1634         return success(client);
1635     }
1636
1637     //    0      1       2         3
1638     // network create <netId> [permission]
1639     //
1640     //    0      1       2     3     4        5
1641     // network create <netId> vpn <hasDns> <secure>
1642     if (!strcmp(argv[1], "create")) {
1643         if (argc < 3) {
1644             return syntaxError(client, "Missing argument");
1645         }
1646         unsigned netId = stringToNetId(argv[2]);
1647         if (argc == 6 && !strcmp(argv[3], "vpn")) {
1648             bool hasDns = atoi(argv[4]);
1649             bool secure = atoi(argv[5]);
1650             if (int ret = sNetCtrl->createVirtualNetwork(netId, hasDns, secure)) {
1651                 return operationError(client, "createVirtualNetwork() failed", ret);
1652             }
1653         } else if (argc > 4) {
1654             return syntaxError(client, "Unknown trailing argument(s)");
1655         } else {
1656             Permission permission = PERMISSION_NONE;
1657             if (argc == 4) {
1658                 permission = stringToPermission(argv[3]);
1659                 if (permission == PERMISSION_NONE) {
1660                     return syntaxError(client, "Unknown permission");
1661                 }
1662             }
1663             if (int ret = sNetCtrl->createPhysicalNetwork(netId, permission)) {
1664                 return operationError(client, "createPhysicalNetwork() failed", ret);
1665             }
1666         }
1667         return success(client);
1668     }
1669
1670     //    0       1       2
1671     // network destroy <netId>
1672     if (!strcmp(argv[1], "destroy")) {
1673         if (argc != 3) {
1674             return syntaxError(client, "Incorrect number of arguments");
1675         }
1676         unsigned netId = stringToNetId(argv[2]);
1677         if (int ret = sNetCtrl->destroyNetwork(netId)) {
1678             return operationError(client, "destroyNetwork() failed", ret);
1679         }
1680         return success(client);
1681     }
1682
1683     //    0       1      2      3
1684     // network default  set  <netId>
1685     // network default clear
1686     if (!strcmp(argv[1], "default")) {
1687         if (argc < 3) {
1688             return syntaxError(client, "Missing argument");
1689         }
1690         unsigned netId = NETID_UNSET;
1691         if (!strcmp(argv[2], "set")) {
1692             if (argc < 4) {
1693                 return syntaxError(client, "Missing netId");
1694             }
1695             netId = stringToNetId(argv[3]);
1696         } else if (strcmp(argv[2], "clear")) {
1697             return syntaxError(client, "Unknown argument");
1698         }
1699         if (int ret = sNetCtrl->setDefaultNetwork(netId)) {
1700             return operationError(client, "setDefaultNetwork() failed", ret);
1701         }
1702         return success(client);
1703     }
1704
1705     //    0        1         2      3        4          5
1706     // network permission   user   set  <permission>  <uid> ...
1707     // network permission   user  clear    <uid> ...
1708     // network permission network  set  <permission> <netId> ...
1709     // network permission network clear   <netId> ...
1710     if (!strcmp(argv[1], "permission")) {
1711         if (argc < 5) {
1712             return syntaxError(client, "Missing argument");
1713         }
1714         int nextArg = 4;
1715         Permission permission = PERMISSION_NONE;
1716         if (!strcmp(argv[3], "set")) {
1717             permission = stringToPermission(argv[4]);
1718             if (permission == PERMISSION_NONE) {
1719                 return syntaxError(client, "Unknown permission");
1720             }
1721             nextArg = 5;
1722         } else if (strcmp(argv[3], "clear")) {
1723             return syntaxError(client, "Unknown argument");
1724         }
1725         if (nextArg == argc) {
1726             return syntaxError(client, "Missing id");
1727         }
1728
1729         bool userPermissions = !strcmp(argv[2], "user");
1730         bool networkPermissions = !strcmp(argv[2], "network");
1731         if (!userPermissions && !networkPermissions) {
1732             return syntaxError(client, "Unknown argument");
1733         }
1734
1735         std::vector<unsigned> ids;
1736         for (; nextArg < argc; ++nextArg) {
1737             if (userPermissions) {
1738                 char* endPtr;
1739                 unsigned id = strtoul(argv[nextArg], &endPtr, 0);
1740                 if (!*argv[nextArg] || *endPtr) {
1741                     return syntaxError(client, "Invalid id");
1742                 }
1743                 ids.push_back(id);
1744             } else {
1745                 // networkPermissions
1746                 ids.push_back(stringToNetId(argv[nextArg]));
1747             }
1748         }
1749         if (userPermissions) {
1750             sNetCtrl->setPermissionForUsers(permission, ids);
1751         } else {
1752             // networkPermissions
1753             if (int ret = sNetCtrl->setPermissionForNetworks(permission, ids)) {
1754                 return operationError(client, "setPermissionForNetworks() failed", ret);
1755             }
1756         }
1757
1758         return success(client);
1759     }
1760
1761     //    0      1     2       3           4
1762     // network users  add   <netId> [<uid>[-<uid>]] ...
1763     // network users remove <netId> [<uid>[-<uid>]] ...
1764     if (!strcmp(argv[1], "users")) {
1765         if (argc < 4) {
1766             return syntaxError(client, "Missing argument");
1767         }
1768         unsigned netId = stringToNetId(argv[3]);
1769         UidRanges uidRanges;
1770         if (!uidRanges.parseFrom(argc - 4, argv + 4)) {
1771             return syntaxError(client, "Invalid UIDs");
1772         }
1773         if (!strcmp(argv[2], "add")) {
1774             if (int ret = sNetCtrl->addUsersToNetwork(netId, uidRanges)) {
1775                 return operationError(client, "addUsersToNetwork() failed", ret);
1776             }
1777         } else if (!strcmp(argv[2], "remove")) {
1778             if (int ret = sNetCtrl->removeUsersFromNetwork(netId, uidRanges)) {
1779                 return operationError(client, "removeUsersFromNetwork() failed", ret);
1780             }
1781         } else {
1782             return syntaxError(client, "Unknown argument");
1783         }
1784         return success(client);
1785     }
1786
1787     //    0       1      2     3
1788     // network protect allow <uid> ...
1789     // network protect  deny <uid> ...
1790     if (!strcmp(argv[1], "protect")) {
1791         if (argc < 4) {
1792             return syntaxError(client, "Missing argument");
1793         }
1794         std::vector<uid_t> uids;
1795         for (int i = 3; i < argc; ++i) {
1796             uids.push_back(strtoul(argv[i], NULL, 0));
1797         }
1798         if (!strcmp(argv[2], "allow")) {
1799             sNetCtrl->allowProtect(uids);
1800         } else if (!strcmp(argv[2], "deny")) {
1801             sNetCtrl->denyProtect(uids);
1802         } else {
1803             return syntaxError(client, "Unknown argument");
1804         }
1805         return success(client);
1806     }
1807
1808     return syntaxError(client, "Unknown argument");
1809 }