CommandListener.cpp revision de5d5df753dd35d852ac47a6174b06eacd0d5523 
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
52namespace {
53
54Permission stringToPermission(const char* arg) {
55    if (!strcmp(arg, "android.permission.CHANGE_NETWORK_STATE")) {
56        return PERMISSION_NETWORK;
57    }
58    if (!strcmp(arg, "android.permission.CONNECTIVITY_INTERNAL")) {
59        return PERMISSION_SYSTEM;
60    }
61    return PERMISSION_NONE;
62}
63
64unsigned stringToNetId(const char* arg) {
65    if (!strcmp(arg, "local")) {
66        return NetworkController::LOCAL_NET_ID;
67    }
68    // strtoul() returns 0 on errors, which is fine because 0 is an invalid netId.
69    return strtoul(arg, NULL, 0);
70}
71
72}  // namespace
73
74NetworkController *CommandListener::sNetCtrl = NULL;
75TetherController *CommandListener::sTetherCtrl = NULL;
76NatController *CommandListener::sNatCtrl = NULL;
77PppController *CommandListener::sPppCtrl = NULL;
78SoftapController *CommandListener::sSoftapCtrl = NULL;
79BandwidthController * CommandListener::sBandwidthCtrl = NULL;
80IdletimerController * CommandListener::sIdletimerCtrl = NULL;
81InterfaceController *CommandListener::sInterfaceCtrl = NULL;
82ResolverController *CommandListener::sResolverCtrl = NULL;
83FirewallController *CommandListener::sFirewallCtrl = NULL;
84ClatdController *CommandListener::sClatdCtrl = NULL;
85
86/**
87 * List of module chains to be created, along with explicit ordering. ORDERING
88 * IS CRITICAL, AND SHOULD BE TRIPLE-CHECKED WITH EACH CHANGE.
89 */
90static const char* FILTER_INPUT[] = {
91        // Bandwidth should always be early in input chain, to make sure we
92        // correctly count incoming traffic against data plan.
93        BandwidthController::LOCAL_INPUT,
94        FirewallController::LOCAL_INPUT,
95        NULL,
96};
97
98static const char* FILTER_FORWARD[] = {
99        OEM_IPTABLES_FILTER_FORWARD,
100        FirewallController::LOCAL_FORWARD,
101        BandwidthController::LOCAL_FORWARD,
102        NatController::LOCAL_FORWARD,
103        NULL,
104};
105
106static const char* FILTER_OUTPUT[] = {
107        OEM_IPTABLES_FILTER_OUTPUT,
108        FirewallController::LOCAL_OUTPUT,
109        BandwidthController::LOCAL_OUTPUT,
110        NULL,
111};
112
113static const char* RAW_PREROUTING[] = {
114        BandwidthController::LOCAL_RAW_PREROUTING,
115        IdletimerController::LOCAL_RAW_PREROUTING,
116        NULL,
117};
118
119static const char* MANGLE_POSTROUTING[] = {
120        BandwidthController::LOCAL_MANGLE_POSTROUTING,
121        IdletimerController::LOCAL_MANGLE_POSTROUTING,
122        NULL,
123};
124
125static const char* NAT_PREROUTING[] = {
126        OEM_IPTABLES_NAT_PREROUTING,
127        NULL,
128};
129
130static const char* NAT_POSTROUTING[] = {
131        NatController::LOCAL_NAT_POSTROUTING,
132        NULL,
133};
134
135static void createChildChains(IptablesTarget target, const char* table, const char* parentChain,
136        const char** childChains) {
137    const char** childChain = childChains;
138    do {
139        // Order is important:
140        // -D to delete any pre-existing jump rule (removes references
141        //    that would prevent -X from working)
142        // -F to flush any existing chain
143        // -X to delete any existing chain
144        // -N to create the chain
145        // -A to append the chain to parent
146
147        execIptablesSilently(target, "-t", table, "-D", parentChain, "-j", *childChain, NULL);
148        execIptablesSilently(target, "-t", table, "-F", *childChain, NULL);
149        execIptablesSilently(target, "-t", table, "-X", *childChain, NULL);
150        execIptables(target, "-t", table, "-N", *childChain, NULL);
151        execIptables(target, "-t", table, "-A", parentChain, "-j", *childChain, NULL);
152    } while (*(++childChain) != NULL);
153}
154
155CommandListener::CommandListener() :
156                 FrameworkListener("netd", true) {
157    registerCmd(new InterfaceCmd());
158    registerCmd(new IpFwdCmd());
159    registerCmd(new TetherCmd());
160    registerCmd(new NatCmd());
161    registerCmd(new ListTtysCmd());
162    registerCmd(new PppdCmd());
163    registerCmd(new SoftapCmd());
164    registerCmd(new BandwidthControlCmd());
165    registerCmd(new IdletimerControlCmd());
166    registerCmd(new ResolverCmd());
167    registerCmd(new FirewallCmd());
168    registerCmd(new ClatdCmd());
169    registerCmd(new NetworkCommand());
170
171    if (!sNetCtrl)
172        sNetCtrl = new NetworkController();
173    if (!sTetherCtrl)
174        sTetherCtrl = new TetherController();
175    if (!sNatCtrl)
176        sNatCtrl = new NatController();
177    if (!sPppCtrl)
178        sPppCtrl = new PppController();
179    if (!sSoftapCtrl)
180        sSoftapCtrl = new SoftapController();
181    if (!sBandwidthCtrl)
182        sBandwidthCtrl = new BandwidthController();
183    if (!sIdletimerCtrl)
184        sIdletimerCtrl = new IdletimerController();
185    if (!sResolverCtrl)
186        sResolverCtrl = new ResolverController();
187    if (!sFirewallCtrl)
188        sFirewallCtrl = new FirewallController();
189    if (!sInterfaceCtrl)
190        sInterfaceCtrl = new InterfaceController();
191    if (!sClatdCtrl)
192        sClatdCtrl = new ClatdController(sNetCtrl);
193
194    /*
195     * This is the only time we touch top-level chains in iptables; controllers
196     * should only mutate rules inside of their children chains, as created by
197     * the constants above.
198     *
199     * Modules should never ACCEPT packets (except in well-justified cases);
200     * they should instead defer to any remaining modules using RETURN, or
201     * otherwise DROP/REJECT.
202     */
203
204    // Create chains for children modules
205    createChildChains(V4V6, "filter", "INPUT", FILTER_INPUT);
206    createChildChains(V4V6, "filter", "FORWARD", FILTER_FORWARD);
207    createChildChains(V4V6, "filter", "OUTPUT", FILTER_OUTPUT);
208    createChildChains(V4V6, "raw", "PREROUTING", RAW_PREROUTING);
209    createChildChains(V4V6, "mangle", "POSTROUTING", MANGLE_POSTROUTING);
210    createChildChains(V4, "nat", "PREROUTING", NAT_PREROUTING);
211    createChildChains(V4, "nat", "POSTROUTING", NAT_POSTROUTING);
212
213    // Let each module setup their child chains
214    setupOemIptablesHook();
215
216    /* When enabled, DROPs all packets except those matching rules. */
217    sFirewallCtrl->setupIptablesHooks();
218
219    /* Does DROPs in FORWARD by default */
220    sNatCtrl->setupIptablesHooks();
221    /*
222     * Does REJECT in INPUT, OUTPUT. Does counting also.
223     * No DROP/REJECT allowed later in netfilter-flow hook order.
224     */
225    sBandwidthCtrl->setupIptablesHooks();
226    /*
227     * Counts in nat: PREROUTING, POSTROUTING.
228     * No DROP/REJECT allowed later in netfilter-flow hook order.
229     */
230    sIdletimerCtrl->setupIptablesHooks();
231
232    sBandwidthCtrl->enableBandwidthControl(false);
233
234    if (int ret = RouteController::Init(NetworkController::LOCAL_NET_ID)) {
235        ALOGE("failed to initialize RouteController (%s)", strerror(-ret));
236    }
237}
238
239CommandListener::InterfaceCmd::InterfaceCmd() :
240                 NetdCommand("interface") {
241}
242
243int CommandListener::InterfaceCmd::runCommand(SocketClient *cli,
244                                                      int argc, char **argv) {
245    if (argc < 2) {
246        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
247        return 0;
248    }
249
250    if (!strcmp(argv[1], "list")) {
251        DIR *d;
252        struct dirent *de;
253
254        if (!(d = opendir("/sys/class/net"))) {
255            cli->sendMsg(ResponseCode::OperationFailed, "Failed to open sysfs dir", true);
256            return 0;
257        }
258
259        while((de = readdir(d))) {
260            if (de->d_name[0] == '.')
261                continue;
262            cli->sendMsg(ResponseCode::InterfaceListResult, de->d_name, false);
263        }
264        closedir(d);
265        cli->sendMsg(ResponseCode::CommandOkay, "Interface list completed", false);
266        return 0;
267    } else {
268        /*
269         * These commands take a minimum of 3 arguments
270         */
271        if (argc < 3) {
272            cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
273            return 0;
274        }
275
276        if (!strcmp(argv[1], "getcfg")) {
277            struct in_addr addr;
278            int prefixLength;
279            unsigned char hwaddr[6];
280            unsigned flags = 0;
281
282            ifc_init();
283            memset(hwaddr, 0, sizeof(hwaddr));
284
285            if (ifc_get_info(argv[2], &addr.s_addr, &prefixLength, &flags)) {
286                cli->sendMsg(ResponseCode::OperationFailed, "Interface not found", true);
287                ifc_close();
288                return 0;
289            }
290
291            if (ifc_get_hwaddr(argv[2], (void *) hwaddr)) {
292                ALOGW("Failed to retrieve HW addr for %s (%s)", argv[2], strerror(errno));
293            }
294
295            char *addr_s = strdup(inet_ntoa(addr));
296            const char *updown, *brdcst, *loopbk, *ppp, *running, *multi;
297
298            updown =  (flags & IFF_UP)           ? "up" : "down";
299            brdcst =  (flags & IFF_BROADCAST)    ? " broadcast" : "";
300            loopbk =  (flags & IFF_LOOPBACK)     ? " loopback" : "";
301            ppp =     (flags & IFF_POINTOPOINT)  ? " point-to-point" : "";
302            running = (flags & IFF_RUNNING)      ? " running" : "";
303            multi =   (flags & IFF_MULTICAST)    ? " multicast" : "";
304
305            char *flag_s;
306
307            asprintf(&flag_s, "%s%s%s%s%s%s", updown, brdcst, loopbk, ppp, running, multi);
308
309            char *msg = NULL;
310            asprintf(&msg, "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x %s %d %s",
311                     hwaddr[0], hwaddr[1], hwaddr[2], hwaddr[3], hwaddr[4], hwaddr[5],
312                     addr_s, prefixLength, flag_s);
313
314            cli->sendMsg(ResponseCode::InterfaceGetCfgResult, msg, false);
315
316            free(addr_s);
317            free(flag_s);
318            free(msg);
319
320            ifc_close();
321            return 0;
322        } else if (!strcmp(argv[1], "setcfg")) {
323            // arglist: iface [addr prefixLength] flags
324            if (argc < 4) {
325                cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
326                return 0;
327            }
328            ALOGD("Setting iface cfg");
329
330            struct in_addr addr;
331            int index = 5;
332
333            ifc_init();
334
335            if (!inet_aton(argv[3], &addr)) {
336                // Handle flags only case
337                index = 3;
338            } else {
339                if (ifc_set_addr(argv[2], addr.s_addr)) {
340                    cli->sendMsg(ResponseCode::OperationFailed, "Failed to set address", true);
341                    ifc_close();
342                    return 0;
343                }
344
345                // Set prefix length on a non zero address
346                if (addr.s_addr != 0 && ifc_set_prefixLength(argv[2], atoi(argv[4]))) {
347                   cli->sendMsg(ResponseCode::OperationFailed, "Failed to set prefixLength", true);
348                   ifc_close();
349                   return 0;
350               }
351            }
352
353            /* Process flags */
354            for (int i = index; i < argc; i++) {
355                char *flag = argv[i];
356                if (!strcmp(flag, "up")) {
357                    ALOGD("Trying to bring up %s", argv[2]);
358                    if (ifc_up(argv[2])) {
359                        ALOGE("Error upping interface");
360                        cli->sendMsg(ResponseCode::OperationFailed, "Failed to up interface", true);
361                        ifc_close();
362                        return 0;
363                    }
364                } else if (!strcmp(flag, "down")) {
365                    ALOGD("Trying to bring down %s", argv[2]);
366                    if (ifc_down(argv[2])) {
367                        ALOGE("Error downing interface");
368                        cli->sendMsg(ResponseCode::OperationFailed, "Failed to down interface", true);
369                        ifc_close();
370                        return 0;
371                    }
372                } else if (!strcmp(flag, "broadcast")) {
373                    // currently ignored
374                } else if (!strcmp(flag, "multicast")) {
375                    // currently ignored
376                } else if (!strcmp(flag, "running")) {
377                    // currently ignored
378                } else if (!strcmp(flag, "loopback")) {
379                    // currently ignored
380                } else if (!strcmp(flag, "point-to-point")) {
381                    // currently ignored
382                } else {
383                    cli->sendMsg(ResponseCode::CommandParameterError, "Flag unsupported", false);
384                    ifc_close();
385                    return 0;
386                }
387            }
388
389            cli->sendMsg(ResponseCode::CommandOkay, "Interface configuration set", false);
390            ifc_close();
391            return 0;
392        } else if (!strcmp(argv[1], "clearaddrs")) {
393            // arglist: iface
394            ALOGD("Clearing all IP addresses on %s", argv[2]);
395
396            ifc_clear_addresses(argv[2]);
397
398            cli->sendMsg(ResponseCode::CommandOkay, "Interface IP addresses cleared", false);
399            return 0;
400        } else if (!strcmp(argv[1], "ipv6privacyextensions")) {
401            if (argc != 4) {
402                cli->sendMsg(ResponseCode::CommandSyntaxError,
403                        "Usage: interface ipv6privacyextensions <interface> <enable|disable>",
404                        false);
405                return 0;
406            }
407            int enable = !strncmp(argv[3], "enable", 7);
408            if (sInterfaceCtrl->setIPv6PrivacyExtensions(argv[2], enable) == 0) {
409                cli->sendMsg(ResponseCode::CommandOkay, "IPv6 privacy extensions changed", false);
410            } else {
411                cli->sendMsg(ResponseCode::OperationFailed,
412                        "Failed to set ipv6 privacy extensions", true);
413            }
414            return 0;
415        } else if (!strcmp(argv[1], "ipv6")) {
416            if (argc != 4) {
417                cli->sendMsg(ResponseCode::CommandSyntaxError,
418                        "Usage: interface ipv6 <interface> <enable|disable>",
419                        false);
420                return 0;
421            }
422
423            int enable = !strncmp(argv[3], "enable", 7);
424            if (sInterfaceCtrl->setEnableIPv6(argv[2], enable) == 0) {
425                cli->sendMsg(ResponseCode::CommandOkay, "IPv6 state changed", false);
426            } else {
427                cli->sendMsg(ResponseCode::OperationFailed,
428                        "Failed to change IPv6 state", true);
429            }
430            return 0;
431        } else if (!strcmp(argv[1], "setmtu")) {
432            if (argc != 4) {
433                cli->sendMsg(ResponseCode::CommandSyntaxError,
434                        "Usage: interface setmtu <interface> <val>", false);
435                return 0;
436            }
437            if (sInterfaceCtrl->setMtu(argv[2], argv[3]) == 0) {
438                cli->sendMsg(ResponseCode::CommandOkay, "MTU changed", false);
439            } else {
440                cli->sendMsg(ResponseCode::OperationFailed,
441                        "Failed to get MTU", true);
442            }
443            return 0;
444        } else {
445            cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown interface cmd", false);
446            return 0;
447        }
448    }
449    return 0;
450}
451
452
453CommandListener::ListTtysCmd::ListTtysCmd() :
454                 NetdCommand("list_ttys") {
455}
456
457int CommandListener::ListTtysCmd::runCommand(SocketClient *cli,
458                                             int /* argc */, char ** /* argv */) {
459    TtyCollection *tlist = sPppCtrl->getTtyList();
460    TtyCollection::iterator it;
461
462    for (it = tlist->begin(); it != tlist->end(); ++it) {
463        cli->sendMsg(ResponseCode::TtyListResult, *it, false);
464    }
465
466    cli->sendMsg(ResponseCode::CommandOkay, "Ttys listed.", false);
467    return 0;
468}
469
470CommandListener::IpFwdCmd::IpFwdCmd() :
471                 NetdCommand("ipfwd") {
472}
473
474int CommandListener::IpFwdCmd::runCommand(SocketClient *cli,
475                                                      int argc, char **argv) {
476    int rc = 0;
477
478    if (argc < 2) {
479        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
480        return 0;
481    }
482
483    if (!strcmp(argv[1], "status")) {
484        char *tmp = NULL;
485
486        asprintf(&tmp, "Forwarding %s", (sTetherCtrl->getIpFwdEnabled() ? "enabled" : "disabled"));
487        cli->sendMsg(ResponseCode::IpFwdStatusResult, tmp, false);
488        free(tmp);
489        return 0;
490    } else if (!strcmp(argv[1], "enable")) {
491        rc = sTetherCtrl->setIpFwdEnabled(true);
492    } else if (!strcmp(argv[1], "disable")) {
493        rc = sTetherCtrl->setIpFwdEnabled(false);
494    } else {
495        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown ipfwd cmd", false);
496        return 0;
497    }
498
499    if (!rc) {
500        cli->sendMsg(ResponseCode::CommandOkay, "ipfwd operation succeeded", false);
501    } else {
502        cli->sendMsg(ResponseCode::OperationFailed, "ipfwd operation failed", true);
503    }
504
505    return 0;
506}
507
508CommandListener::TetherCmd::TetherCmd() :
509                 NetdCommand("tether") {
510}
511
512int CommandListener::TetherCmd::runCommand(SocketClient *cli,
513                                                      int argc, char **argv) {
514    int rc = 0;
515
516    if (argc < 2) {
517        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
518        return 0;
519    }
520
521    if (!strcmp(argv[1], "stop")) {
522        rc = sTetherCtrl->stopTethering();
523    } else if (!strcmp(argv[1], "status")) {
524        char *tmp = NULL;
525
526        asprintf(&tmp, "Tethering services %s",
527                 (sTetherCtrl->isTetheringStarted() ? "started" : "stopped"));
528        cli->sendMsg(ResponseCode::TetherStatusResult, tmp, false);
529        free(tmp);
530        return 0;
531    } else if (argc == 3) {
532        if (!strcmp(argv[1], "interface") && !strcmp(argv[2], "list")) {
533            InterfaceCollection *ilist = sTetherCtrl->getTetheredInterfaceList();
534            InterfaceCollection::iterator it;
535            for (it = ilist->begin(); it != ilist->end(); ++it) {
536                cli->sendMsg(ResponseCode::TetherInterfaceListResult, *it, false);
537            }
538        } else if (!strcmp(argv[1], "dns") && !strcmp(argv[2], "list")) {
539            NetAddressCollection *dlist = sTetherCtrl->getDnsForwarders();
540            NetAddressCollection::iterator it;
541
542            for (it = dlist->begin(); it != dlist->end(); ++it) {
543                cli->sendMsg(ResponseCode::TetherDnsFwdTgtListResult, inet_ntoa(*it), false);
544            }
545        }
546    } else {
547        /*
548         * These commands take a minimum of 4 arguments
549         */
550        if (argc < 4) {
551            cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
552            return 0;
553        }
554
555        if (!strcmp(argv[1], "start")) {
556            if (argc % 2 == 1) {
557                cli->sendMsg(ResponseCode::CommandSyntaxError, "Bad number of arguments", false);
558                return 0;
559            }
560
561            int num_addrs = argc - 2;
562            int arg_index = 2;
563            int array_index = 0;
564            in_addr *addrs = (in_addr *)malloc(sizeof(in_addr) * num_addrs);
565            while (array_index < num_addrs) {
566                if (!inet_aton(argv[arg_index++], &(addrs[array_index++]))) {
567                    cli->sendMsg(ResponseCode::CommandParameterError, "Invalid address", false);
568                    free(addrs);
569                    return 0;
570                }
571            }
572            rc = sTetherCtrl->startTethering(num_addrs, addrs);
573            free(addrs);
574        } else if (!strcmp(argv[1], "interface")) {
575            if (!strcmp(argv[2], "add")) {
576                rc = sTetherCtrl->tetherInterface(argv[3]);
577            } else if (!strcmp(argv[2], "remove")) {
578                rc = sTetherCtrl->untetherInterface(argv[3]);
579            /* else if (!strcmp(argv[2], "list")) handled above */
580            } else {
581                cli->sendMsg(ResponseCode::CommandParameterError,
582                             "Unknown tether interface operation", false);
583                return 0;
584            }
585        } else if (!strcmp(argv[1], "dns")) {
586            if (!strcmp(argv[2], "set")) {
587                rc = sTetherCtrl->setDnsForwarders(&argv[3], argc - 3);
588            /* else if (!strcmp(argv[2], "list")) handled above */
589            } else {
590                cli->sendMsg(ResponseCode::CommandParameterError,
591                             "Unknown tether interface operation", false);
592                return 0;
593            }
594        } else {
595            cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown tether cmd", false);
596            return 0;
597        }
598    }
599
600    if (!rc) {
601        cli->sendMsg(ResponseCode::CommandOkay, "Tether operation succeeded", false);
602    } else {
603        cli->sendMsg(ResponseCode::OperationFailed, "Tether operation failed", true);
604    }
605
606    return 0;
607}
608
609CommandListener::NatCmd::NatCmd() :
610                 NetdCommand("nat") {
611}
612
613int CommandListener::NatCmd::runCommand(SocketClient *cli,
614                                                      int argc, char **argv) {
615    int rc = 0;
616
617    if (argc < 5) {
618        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
619        return 0;
620    }
621
622    //  0     1       2        3
623    // nat  enable intiface extiface
624    // nat disable intiface extiface
625    if (!strcmp(argv[1], "enable") && argc >= 4) {
626        rc = sNatCtrl->enableNat(argv[2], argv[3]);
627        if(!rc) {
628            /* Ignore ifaces for now. */
629            rc = sBandwidthCtrl->setGlobalAlertInForwardChain();
630        }
631    } else if (!strcmp(argv[1], "disable") && argc >= 4) {
632        /* Ignore ifaces for now. */
633        rc = sBandwidthCtrl->removeGlobalAlertInForwardChain();
634        rc |= sNatCtrl->disableNat(argv[2], argv[3]);
635    } else {
636        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown nat cmd", false);
637        return 0;
638    }
639
640    if (!rc) {
641        cli->sendMsg(ResponseCode::CommandOkay, "Nat operation succeeded", false);
642    } else {
643        cli->sendMsg(ResponseCode::OperationFailed, "Nat operation failed", true);
644    }
645
646    return 0;
647}
648
649CommandListener::PppdCmd::PppdCmd() :
650                 NetdCommand("pppd") {
651}
652
653int CommandListener::PppdCmd::runCommand(SocketClient *cli,
654                                                      int argc, char **argv) {
655    int rc = 0;
656
657    if (argc < 3) {
658        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
659        return 0;
660    }
661
662    if (!strcmp(argv[1], "attach")) {
663        struct in_addr l, r, dns1, dns2;
664
665        memset(&dns1, 0, sizeof(struct in_addr));
666        memset(&dns2, 0, sizeof(struct in_addr));
667
668        if (!inet_aton(argv[3], &l)) {
669            cli->sendMsg(ResponseCode::CommandParameterError, "Invalid local address", false);
670            return 0;
671        }
672        if (!inet_aton(argv[4], &r)) {
673            cli->sendMsg(ResponseCode::CommandParameterError, "Invalid remote address", false);
674            return 0;
675        }
676        if ((argc > 3) && (!inet_aton(argv[5], &dns1))) {
677            cli->sendMsg(ResponseCode::CommandParameterError, "Invalid dns1 address", false);
678            return 0;
679        }
680        if ((argc > 4) && (!inet_aton(argv[6], &dns2))) {
681            cli->sendMsg(ResponseCode::CommandParameterError, "Invalid dns2 address", false);
682            return 0;
683        }
684        rc = sPppCtrl->attachPppd(argv[2], l, r, dns1, dns2);
685    } else if (!strcmp(argv[1], "detach")) {
686        rc = sPppCtrl->detachPppd(argv[2]);
687    } else {
688        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown pppd cmd", false);
689        return 0;
690    }
691
692    if (!rc) {
693        cli->sendMsg(ResponseCode::CommandOkay, "Pppd operation succeeded", false);
694    } else {
695        cli->sendMsg(ResponseCode::OperationFailed, "Pppd operation failed", true);
696    }
697
698    return 0;
699}
700
701CommandListener::SoftapCmd::SoftapCmd() :
702                 NetdCommand("softap") {
703}
704
705int CommandListener::SoftapCmd::runCommand(SocketClient *cli,
706                                        int argc, char **argv) {
707    int rc = ResponseCode::SoftapStatusResult;
708    char *retbuf = NULL;
709
710    if (sSoftapCtrl == NULL) {
711      cli->sendMsg(ResponseCode::ServiceStartFailed, "SoftAP is not available", false);
712      return -1;
713    }
714    if (argc < 2) {
715        cli->sendMsg(ResponseCode::CommandSyntaxError,
716                     "Missing argument in a SoftAP command", false);
717        return 0;
718    }
719
720    if (!strcmp(argv[1], "startap")) {
721        rc = sSoftapCtrl->startSoftap();
722    } else if (!strcmp(argv[1], "stopap")) {
723        rc = sSoftapCtrl->stopSoftap();
724    } else if (!strcmp(argv[1], "fwreload")) {
725        rc = sSoftapCtrl->fwReloadSoftap(argc, argv);
726    } else if (!strcmp(argv[1], "status")) {
727        asprintf(&retbuf, "Softap service %s running",
728                 (sSoftapCtrl->isSoftapStarted() ? "is" : "is not"));
729        cli->sendMsg(rc, retbuf, false);
730        free(retbuf);
731        return 0;
732    } else if (!strcmp(argv[1], "set")) {
733        rc = sSoftapCtrl->setSoftap(argc, argv);
734    } else {
735        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unrecognized SoftAP command", false);
736        return 0;
737    }
738
739    if (rc >= 400 && rc < 600)
740      cli->sendMsg(rc, "SoftAP command has failed", false);
741    else
742      cli->sendMsg(rc, "Ok", false);
743
744    return 0;
745}
746
747CommandListener::ResolverCmd::ResolverCmd() :
748        NetdCommand("resolver") {
749}
750
751int CommandListener::ResolverCmd::runCommand(SocketClient *cli, int argc, char **margv) {
752    int rc = 0;
753    const char **argv = const_cast<const char **>(margv);
754
755    if (argc < 2) {
756        cli->sendMsg(ResponseCode::CommandSyntaxError, "Resolver missing arguments", false);
757        return 0;
758    }
759
760    if (!strcmp(argv[1], "setnetdns")) {
761        // "resolver setnetdns <netId> <domains> <dns1> <dns2> ..."
762        if (argc >= 5) {
763            rc = sResolverCtrl->setDnsServers(strtoul(argv[2], NULL, 0), argv[3], &argv[4], argc - 4);
764        } else {
765            cli->sendMsg(ResponseCode::CommandSyntaxError,
766                    "Wrong number of arguments to resolver setnetdns", false);
767            return 0;
768        }
769    } else {
770        cli->sendMsg(ResponseCode::CommandSyntaxError,"Resolver unknown command", false);
771        return 0;
772    }
773
774    if (!rc) {
775        cli->sendMsg(ResponseCode::CommandOkay, "Resolver command succeeded", false);
776    } else {
777        cli->sendMsg(ResponseCode::OperationFailed, "Resolver command failed", true);
778    }
779
780    return 0;
781}
782
783CommandListener::BandwidthControlCmd::BandwidthControlCmd() :
784    NetdCommand("bandwidth") {
785}
786
787void CommandListener::BandwidthControlCmd::sendGenericSyntaxError(SocketClient *cli, const char *usageMsg) {
788    char *msg;
789    asprintf(&msg, "Usage: bandwidth %s", usageMsg);
790    cli->sendMsg(ResponseCode::CommandSyntaxError, msg, false);
791    free(msg);
792}
793
794void CommandListener::BandwidthControlCmd::sendGenericOkFail(SocketClient *cli, int cond) {
795    if (!cond) {
796        cli->sendMsg(ResponseCode::CommandOkay, "Bandwidth command succeeeded", false);
797    } else {
798        cli->sendMsg(ResponseCode::OperationFailed, "Bandwidth command failed", false);
799    }
800}
801
802void CommandListener::BandwidthControlCmd::sendGenericOpFailed(SocketClient *cli, const char *errMsg) {
803    cli->sendMsg(ResponseCode::OperationFailed, errMsg, false);
804}
805
806int CommandListener::BandwidthControlCmd::runCommand(SocketClient *cli, int argc, char **argv) {
807    if (argc < 2) {
808        sendGenericSyntaxError(cli, "<cmds> <args...>");
809        return 0;
810    }
811
812    ALOGV("bwctrlcmd: argc=%d %s %s ...", argc, argv[0], argv[1]);
813
814    if (!strcmp(argv[1], "enable")) {
815        int rc = sBandwidthCtrl->enableBandwidthControl(true);
816        sendGenericOkFail(cli, rc);
817        return 0;
818
819    }
820    if (!strcmp(argv[1], "disable")) {
821        int rc = sBandwidthCtrl->disableBandwidthControl();
822        sendGenericOkFail(cli, rc);
823        return 0;
824
825    }
826    if (!strcmp(argv[1], "removequota") || !strcmp(argv[1], "rq")) {
827        if (argc != 3) {
828            sendGenericSyntaxError(cli, "removequota <interface>");
829            return 0;
830        }
831        int rc = sBandwidthCtrl->removeInterfaceSharedQuota(argv[2]);
832        sendGenericOkFail(cli, rc);
833        return 0;
834
835    }
836    if (!strcmp(argv[1], "getquota") || !strcmp(argv[1], "gq")) {
837        int64_t bytes;
838        if (argc != 2) {
839            sendGenericSyntaxError(cli, "getquota");
840            return 0;
841        }
842        int rc = sBandwidthCtrl->getInterfaceSharedQuota(&bytes);
843        if (rc) {
844            sendGenericOpFailed(cli, "Failed to get quota");
845            return 0;
846        }
847
848        char *msg;
849        asprintf(&msg, "%" PRId64, bytes);
850        cli->sendMsg(ResponseCode::QuotaCounterResult, msg, false);
851        free(msg);
852        return 0;
853
854    }
855    if (!strcmp(argv[1], "getiquota") || !strcmp(argv[1], "giq")) {
856        int64_t bytes;
857        if (argc != 3) {
858            sendGenericSyntaxError(cli, "getiquota <iface>");
859            return 0;
860        }
861
862        int rc = sBandwidthCtrl->getInterfaceQuota(argv[2], &bytes);
863        if (rc) {
864            sendGenericOpFailed(cli, "Failed to get quota");
865            return 0;
866        }
867        char *msg;
868        asprintf(&msg, "%" PRId64, bytes);
869        cli->sendMsg(ResponseCode::QuotaCounterResult, msg, false);
870        free(msg);
871        return 0;
872
873    }
874    if (!strcmp(argv[1], "setquota") || !strcmp(argv[1], "sq")) {
875        if (argc != 4) {
876            sendGenericSyntaxError(cli, "setquota <interface> <bytes>");
877            return 0;
878        }
879        int rc = sBandwidthCtrl->setInterfaceSharedQuota(argv[2], atoll(argv[3]));
880        sendGenericOkFail(cli, rc);
881        return 0;
882    }
883    if (!strcmp(argv[1], "setquotas") || !strcmp(argv[1], "sqs")) {
884        int rc;
885        if (argc < 4) {
886            sendGenericSyntaxError(cli, "setquotas <bytes> <interface> ...");
887            return 0;
888        }
889
890        for (int q = 3; argc >= 4; q++, argc--) {
891            rc = sBandwidthCtrl->setInterfaceSharedQuota(argv[q], atoll(argv[2]));
892            if (rc) {
893                char *msg;
894                asprintf(&msg, "bandwidth setquotas %s %s failed", argv[2], argv[q]);
895                cli->sendMsg(ResponseCode::OperationFailed,
896                             msg, false);
897                free(msg);
898                return 0;
899            }
900        }
901        sendGenericOkFail(cli, rc);
902        return 0;
903
904    }
905    if (!strcmp(argv[1], "removequotas") || !strcmp(argv[1], "rqs")) {
906        int rc;
907        if (argc < 3) {
908            sendGenericSyntaxError(cli, "removequotas <interface> ...");
909            return 0;
910        }
911
912        for (int q = 2; argc >= 3; q++, argc--) {
913            rc = sBandwidthCtrl->removeInterfaceSharedQuota(argv[q]);
914            if (rc) {
915                char *msg;
916                asprintf(&msg, "bandwidth removequotas %s failed", argv[q]);
917                cli->sendMsg(ResponseCode::OperationFailed,
918                             msg, false);
919                free(msg);
920                return 0;
921            }
922        }
923        sendGenericOkFail(cli, rc);
924        return 0;
925
926    }
927    if (!strcmp(argv[1], "removeiquota") || !strcmp(argv[1], "riq")) {
928        if (argc != 3) {
929            sendGenericSyntaxError(cli, "removeiquota <interface>");
930            return 0;
931        }
932        int rc = sBandwidthCtrl->removeInterfaceQuota(argv[2]);
933        sendGenericOkFail(cli, rc);
934        return 0;
935
936    }
937    if (!strcmp(argv[1], "setiquota") || !strcmp(argv[1], "siq")) {
938        if (argc != 4) {
939            sendGenericSyntaxError(cli, "setiquota <interface> <bytes>");
940            return 0;
941        }
942        int rc = sBandwidthCtrl->setInterfaceQuota(argv[2], atoll(argv[3]));
943        sendGenericOkFail(cli, rc);
944        return 0;
945
946    }
947    if (!strcmp(argv[1], "addnaughtyapps") || !strcmp(argv[1], "ana")) {
948        if (argc < 3) {
949            sendGenericSyntaxError(cli, "addnaughtyapps <appUid> ...");
950            return 0;
951        }
952        int rc = sBandwidthCtrl->addNaughtyApps(argc - 2, argv + 2);
953        sendGenericOkFail(cli, rc);
954        return 0;
955
956
957    }
958    if (!strcmp(argv[1], "removenaughtyapps") || !strcmp(argv[1], "rna")) {
959        if (argc < 3) {
960            sendGenericSyntaxError(cli, "removenaughtyapps <appUid> ...");
961            return 0;
962        }
963        int rc = sBandwidthCtrl->removeNaughtyApps(argc - 2, argv + 2);
964        sendGenericOkFail(cli, rc);
965        return 0;
966    }
967    if (!strcmp(argv[1], "happybox")) {
968        if (argc < 3) {
969            sendGenericSyntaxError(cli, "happybox (enable | disable)");
970            return 0;
971        }
972        if (!strcmp(argv[2], "enable")) {
973            int rc = sBandwidthCtrl->enableHappyBox();
974            sendGenericOkFail(cli, rc);
975            return 0;
976
977        }
978        if (!strcmp(argv[2], "disable")) {
979            int rc = sBandwidthCtrl->disableHappyBox();
980            sendGenericOkFail(cli, rc);
981            return 0;
982        }
983        sendGenericSyntaxError(cli, "happybox (enable | disable)");
984        return 0;
985    }
986    if (!strcmp(argv[1], "addniceapps") || !strcmp(argv[1], "aha")) {
987        if (argc < 3) {
988            sendGenericSyntaxError(cli, "addniceapps <appUid> ...");
989            return 0;
990        }
991        int rc = sBandwidthCtrl->addNiceApps(argc - 2, argv + 2);
992        sendGenericOkFail(cli, rc);
993        return 0;
994    }
995    if (!strcmp(argv[1], "removeniceapps") || !strcmp(argv[1], "rha")) {
996        if (argc < 3) {
997            sendGenericSyntaxError(cli, "removeniceapps <appUid> ...");
998            return 0;
999        }
1000        int rc = sBandwidthCtrl->removeNiceApps(argc - 2, argv + 2);
1001        sendGenericOkFail(cli, rc);
1002        return 0;
1003    }
1004    if (!strcmp(argv[1], "setglobalalert") || !strcmp(argv[1], "sga")) {
1005        if (argc != 3) {
1006            sendGenericSyntaxError(cli, "setglobalalert <bytes>");
1007            return 0;
1008        }
1009        int rc = sBandwidthCtrl->setGlobalAlert(atoll(argv[2]));
1010        sendGenericOkFail(cli, rc);
1011        return 0;
1012    }
1013    if (!strcmp(argv[1], "debugsettetherglobalalert") || !strcmp(argv[1], "dstga")) {
1014        if (argc != 4) {
1015            sendGenericSyntaxError(cli, "debugsettetherglobalalert <interface0> <interface1>");
1016            return 0;
1017        }
1018        /* We ignore the interfaces for now. */
1019        int rc = sBandwidthCtrl->setGlobalAlertInForwardChain();
1020        sendGenericOkFail(cli, rc);
1021        return 0;
1022
1023    }
1024    if (!strcmp(argv[1], "removeglobalalert") || !strcmp(argv[1], "rga")) {
1025        if (argc != 2) {
1026            sendGenericSyntaxError(cli, "removeglobalalert");
1027            return 0;
1028        }
1029        int rc = sBandwidthCtrl->removeGlobalAlert();
1030        sendGenericOkFail(cli, rc);
1031        return 0;
1032
1033    }
1034    if (!strcmp(argv[1], "debugremovetetherglobalalert") || !strcmp(argv[1], "drtga")) {
1035        if (argc != 4) {
1036            sendGenericSyntaxError(cli, "debugremovetetherglobalalert <interface0> <interface1>");
1037            return 0;
1038        }
1039        /* We ignore the interfaces for now. */
1040        int rc = sBandwidthCtrl->removeGlobalAlertInForwardChain();
1041        sendGenericOkFail(cli, rc);
1042        return 0;
1043
1044    }
1045    if (!strcmp(argv[1], "setsharedalert") || !strcmp(argv[1], "ssa")) {
1046        if (argc != 3) {
1047            sendGenericSyntaxError(cli, "setsharedalert <bytes>");
1048            return 0;
1049        }
1050        int rc = sBandwidthCtrl->setSharedAlert(atoll(argv[2]));
1051        sendGenericOkFail(cli, rc);
1052        return 0;
1053
1054    }
1055    if (!strcmp(argv[1], "removesharedalert") || !strcmp(argv[1], "rsa")) {
1056        if (argc != 2) {
1057            sendGenericSyntaxError(cli, "removesharedalert");
1058            return 0;
1059        }
1060        int rc = sBandwidthCtrl->removeSharedAlert();
1061        sendGenericOkFail(cli, rc);
1062        return 0;
1063
1064    }
1065    if (!strcmp(argv[1], "setinterfacealert") || !strcmp(argv[1], "sia")) {
1066        if (argc != 4) {
1067            sendGenericSyntaxError(cli, "setinterfacealert <interface> <bytes>");
1068            return 0;
1069        }
1070        int rc = sBandwidthCtrl->setInterfaceAlert(argv[2], atoll(argv[3]));
1071        sendGenericOkFail(cli, rc);
1072        return 0;
1073
1074    }
1075    if (!strcmp(argv[1], "removeinterfacealert") || !strcmp(argv[1], "ria")) {
1076        if (argc != 3) {
1077            sendGenericSyntaxError(cli, "removeinterfacealert <interface>");
1078            return 0;
1079        }
1080        int rc = sBandwidthCtrl->removeInterfaceAlert(argv[2]);
1081        sendGenericOkFail(cli, rc);
1082        return 0;
1083
1084    }
1085    if (!strcmp(argv[1], "gettetherstats") || !strcmp(argv[1], "gts")) {
1086        BandwidthController::TetherStats tetherStats;
1087        std::string extraProcessingInfo = "";
1088        if (argc < 2 || argc > 4) {
1089            sendGenericSyntaxError(cli, "gettetherstats [<intInterface> <extInterface>]");
1090            return 0;
1091        }
1092        tetherStats.intIface = argc > 2 ? argv[2] : "";
1093        tetherStats.extIface = argc > 3 ? argv[3] : "";
1094        // No filtering requested and there are no interface pairs to lookup.
1095        if (argc <= 2 && sNatCtrl->ifacePairList.empty()) {
1096            cli->sendMsg(ResponseCode::CommandOkay, "Tethering stats list completed", false);
1097            return 0;
1098        }
1099        int rc = sBandwidthCtrl->getTetherStats(cli, tetherStats, extraProcessingInfo);
1100        if (rc) {
1101                extraProcessingInfo.insert(0, "Failed to get tethering stats.\n");
1102                sendGenericOpFailed(cli, extraProcessingInfo.c_str());
1103                return 0;
1104        }
1105        return 0;
1106
1107    }
1108
1109    cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown bandwidth cmd", false);
1110    return 0;
1111}
1112
1113CommandListener::IdletimerControlCmd::IdletimerControlCmd() :
1114    NetdCommand("idletimer") {
1115}
1116
1117int CommandListener::IdletimerControlCmd::runCommand(SocketClient *cli, int argc, char **argv) {
1118  // TODO(ashish): Change the error statements
1119    if (argc < 2) {
1120        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
1121        return 0;
1122    }
1123
1124    ALOGV("idletimerctrlcmd: argc=%d %s %s ...", argc, argv[0], argv[1]);
1125
1126    if (!strcmp(argv[1], "enable")) {
1127      if (0 != sIdletimerCtrl->enableIdletimerControl()) {
1128        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
1129      } else {
1130        cli->sendMsg(ResponseCode::CommandOkay, "Enable success", false);
1131      }
1132      return 0;
1133
1134    }
1135    if (!strcmp(argv[1], "disable")) {
1136      if (0 != sIdletimerCtrl->disableIdletimerControl()) {
1137        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
1138      } else {
1139        cli->sendMsg(ResponseCode::CommandOkay, "Disable success", false);
1140      }
1141      return 0;
1142    }
1143    if (!strcmp(argv[1], "add")) {
1144        if (argc != 5) {
1145            cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
1146            return 0;
1147        }
1148        if(0 != sIdletimerCtrl->addInterfaceIdletimer(
1149                                        argv[2], atoi(argv[3]), argv[4])) {
1150          cli->sendMsg(ResponseCode::OperationFailed, "Failed to add interface", false);
1151        } else {
1152          cli->sendMsg(ResponseCode::CommandOkay,  "Add success", false);
1153        }
1154        return 0;
1155    }
1156    if (!strcmp(argv[1], "remove")) {
1157        if (argc != 5) {
1158            cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
1159            return 0;
1160        }
1161        // ashish: fixme timeout
1162        if (0 != sIdletimerCtrl->removeInterfaceIdletimer(
1163                                        argv[2], atoi(argv[3]), argv[4])) {
1164          cli->sendMsg(ResponseCode::OperationFailed, "Failed to remove interface", false);
1165        } else {
1166          cli->sendMsg(ResponseCode::CommandOkay, "Remove success", false);
1167        }
1168        return 0;
1169    }
1170
1171    cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown idletimer cmd", false);
1172    return 0;
1173}
1174
1175CommandListener::FirewallCmd::FirewallCmd() :
1176    NetdCommand("firewall") {
1177}
1178
1179int CommandListener::FirewallCmd::sendGenericOkFail(SocketClient *cli, int cond) {
1180    if (!cond) {
1181        cli->sendMsg(ResponseCode::CommandOkay, "Firewall command succeeded", false);
1182    } else {
1183        cli->sendMsg(ResponseCode::OperationFailed, "Firewall command failed", false);
1184    }
1185    return 0;
1186}
1187
1188FirewallRule CommandListener::FirewallCmd::parseRule(const char* arg) {
1189    if (!strcmp(arg, "allow")) {
1190        return ALLOW;
1191    } else {
1192        return DENY;
1193    }
1194}
1195
1196int CommandListener::FirewallCmd::runCommand(SocketClient *cli, int argc,
1197        char **argv) {
1198    if (argc < 2) {
1199        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing command", false);
1200        return 0;
1201    }
1202
1203    if (!strcmp(argv[1], "enable")) {
1204        int res = sFirewallCtrl->enableFirewall();
1205        return sendGenericOkFail(cli, res);
1206    }
1207    if (!strcmp(argv[1], "disable")) {
1208        int res = sFirewallCtrl->disableFirewall();
1209        return sendGenericOkFail(cli, res);
1210    }
1211    if (!strcmp(argv[1], "is_enabled")) {
1212        int res = sFirewallCtrl->isFirewallEnabled();
1213        return sendGenericOkFail(cli, res);
1214    }
1215
1216    if (!strcmp(argv[1], "set_interface_rule")) {
1217        if (argc != 4) {
1218            cli->sendMsg(ResponseCode::CommandSyntaxError,
1219                         "Usage: firewall set_interface_rule <rmnet0> <allow|deny>", false);
1220            return 0;
1221        }
1222
1223        const char* iface = argv[2];
1224        FirewallRule rule = parseRule(argv[3]);
1225
1226        int res = sFirewallCtrl->setInterfaceRule(iface, rule);
1227        return sendGenericOkFail(cli, res);
1228    }
1229
1230    if (!strcmp(argv[1], "set_egress_source_rule")) {
1231        if (argc != 4) {
1232            cli->sendMsg(ResponseCode::CommandSyntaxError,
1233                         "Usage: firewall set_egress_source_rule <192.168.0.1> <allow|deny>",
1234                         false);
1235            return 0;
1236        }
1237
1238        const char* addr = argv[2];
1239        FirewallRule rule = parseRule(argv[3]);
1240
1241        int res = sFirewallCtrl->setEgressSourceRule(addr, rule);
1242        return sendGenericOkFail(cli, res);
1243    }
1244
1245    if (!strcmp(argv[1], "set_egress_dest_rule")) {
1246        if (argc != 5) {
1247            cli->sendMsg(ResponseCode::CommandSyntaxError,
1248                         "Usage: firewall set_egress_dest_rule <192.168.0.1> <80> <allow|deny>",
1249                         false);
1250            return 0;
1251        }
1252
1253        const char* addr = argv[2];
1254        int port = atoi(argv[3]);
1255        FirewallRule rule = parseRule(argv[4]);
1256
1257        int res = 0;
1258        res |= sFirewallCtrl->setEgressDestRule(addr, PROTOCOL_TCP, port, rule);
1259        res |= sFirewallCtrl->setEgressDestRule(addr, PROTOCOL_UDP, port, rule);
1260        return sendGenericOkFail(cli, res);
1261    }
1262
1263    if (!strcmp(argv[1], "set_uid_rule")) {
1264        if (argc != 4) {
1265            cli->sendMsg(ResponseCode::CommandSyntaxError,
1266                         "Usage: firewall set_uid_rule <1000> <allow|deny>",
1267                         false);
1268            return 0;
1269        }
1270
1271        int uid = atoi(argv[2]);
1272        FirewallRule rule = parseRule(argv[3]);
1273
1274        int res = sFirewallCtrl->setUidRule(uid, rule);
1275        return sendGenericOkFail(cli, res);
1276    }
1277
1278    cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown command", false);
1279    return 0;
1280}
1281
1282CommandListener::ClatdCmd::ClatdCmd() : NetdCommand("clatd") {
1283}
1284
1285int CommandListener::ClatdCmd::runCommand(SocketClient *cli, int argc,
1286                                                            char **argv) {
1287    int rc = 0;
1288    if (argc < 2) {
1289        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
1290        return 0;
1291    }
1292
1293    if(!strcmp(argv[1], "stop")) {
1294        rc = sClatdCtrl->stopClatd();
1295    } else if (!strcmp(argv[1], "status")) {
1296        char *tmp = NULL;
1297
1298        asprintf(&tmp, "Clatd status: %s", (sClatdCtrl->isClatdStarted() ?
1299                                                        "started" : "stopped"));
1300        cli->sendMsg(ResponseCode::ClatdStatusResult, tmp, false);
1301        free(tmp);
1302        return 0;
1303    } else if(!strcmp(argv[1], "start")) {
1304        if (argc < 3) {
1305            cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
1306            return 0;
1307        }
1308        rc = sClatdCtrl->startClatd(argv[2]);
1309    } else {
1310        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown clatd cmd", false);
1311        return 0;
1312    }
1313
1314    if (!rc) {
1315        cli->sendMsg(ResponseCode::CommandOkay, "Clatd operation succeeded", false);
1316    } else {
1317        cli->sendMsg(ResponseCode::OperationFailed, "Clatd operation failed", false);
1318    }
1319
1320    return 0;
1321}
1322
1323CommandListener::NetworkCommand::NetworkCommand() : NetdCommand("network") {
1324}
1325
1326int CommandListener::NetworkCommand::syntaxError(SocketClient* client, const char* message) {
1327    client->sendMsg(ResponseCode::CommandSyntaxError, message, false);
1328    return 0;
1329}
1330
1331int CommandListener::NetworkCommand::operationError(SocketClient* client, const char* message,
1332                                                    int ret) {
1333    errno = -ret;
1334    client->sendMsg(ResponseCode::OperationFailed, message, true);
1335    return 0;
1336}
1337
1338int CommandListener::NetworkCommand::success(SocketClient* client) {
1339    client->sendMsg(ResponseCode::CommandOkay, "success", false);
1340    return 0;
1341}
1342
1343int CommandListener::NetworkCommand::runCommand(SocketClient* client, int argc, char** argv) {
1344    if (argc < 2) {
1345        return syntaxError(client, "Missing argument");
1346    }
1347
1348    //    0      1      2      3      4       5         6            7               8
1349    // network route [legacy <uid>]  add   <netId> <interface> <destination> [nexthop|"unreachable"]
1350    // network route [legacy <uid>] remove <netId> <interface> <destination> [nexthop|"unreachable"]
1351    if (!strcmp(argv[1], "route")) {
1352        if (argc < 6 || argc > 9) {
1353            return syntaxError(client, "Incorrect number of arguments");
1354        }
1355
1356        int nextArg = 2;
1357        bool legacy = false;
1358        uid_t uid = 0;
1359        if (!strcmp(argv[nextArg], "legacy")) {
1360            ++nextArg;
1361            legacy = true;
1362            uid = strtoul(argv[nextArg++], NULL, 0);
1363        }
1364
1365        bool add = false;
1366        if (!strcmp(argv[nextArg], "add")) {
1367            add = true;
1368        } else if (strcmp(argv[nextArg], "remove")) {
1369            return syntaxError(client, "Unknown argument");
1370        }
1371        ++nextArg;
1372
1373        if (argc < nextArg + 3 || argc > nextArg + 4) {
1374            return syntaxError(client, "Incorrect number of arguments");
1375        }
1376
1377        unsigned netId = stringToNetId(argv[nextArg++]);
1378        const char* interface = argv[nextArg++];
1379        const char* destination = argv[nextArg++];
1380        const char* nexthop = argc > nextArg ? argv[nextArg] : NULL;
1381
1382        int ret;
1383        if (add) {
1384            ret = sNetCtrl->addRoute(netId, interface, destination, nexthop, legacy, uid);
1385        } else {
1386            ret = sNetCtrl->removeRoute(netId, interface, destination, nexthop, legacy, uid);
1387        }
1388        if (ret) {
1389            return operationError(client, add ? "addRoute() failed" : "removeRoute() failed", ret);
1390        }
1391
1392        return success(client);
1393    }
1394
1395    //    0        1       2       3         4
1396    // network interface  add   <netId> <interface>
1397    // network interface remove <netId> <interface>
1398    if (!strcmp(argv[1], "interface")) {
1399        if (argc != 5) {
1400            return syntaxError(client, "Missing argument");
1401        }
1402        unsigned netId = stringToNetId(argv[3]);
1403        if (!strcmp(argv[2], "add")) {
1404            if (int ret = sNetCtrl->addInterfaceToNetwork(netId, argv[4])) {
1405                return operationError(client, "addInterfaceToNetwork() failed", ret);
1406            }
1407        } else if (!strcmp(argv[2], "remove")) {
1408            if (int ret = sNetCtrl->removeInterfaceFromNetwork(netId, argv[4])) {
1409                return operationError(client, "removeInterfaceFromNetwork() failed", ret);
1410            }
1411        } else {
1412            return syntaxError(client, "Unknown argument");
1413        }
1414        return success(client);
1415    }
1416
1417    //    0      1       2         3
1418    // network create <netId> [permission]
1419    //
1420    //    0      1       2     3     4        5
1421    // network create <netId> vpn <hasDns> <secure>
1422    if (!strcmp(argv[1], "create")) {
1423        if (argc < 3) {
1424            return syntaxError(client, "Missing argument");
1425        }
1426        unsigned netId = stringToNetId(argv[2]);
1427        if (argc == 6 && !strcmp(argv[3], "vpn")) {
1428            bool hasDns = atoi(argv[4]);
1429            bool secure = atoi(argv[5]);
1430            if (int ret = sNetCtrl->createVirtualNetwork(netId, hasDns, secure)) {
1431                return operationError(client, "createVirtualNetwork() failed", ret);
1432            }
1433        } else if (argc > 4) {
1434            return syntaxError(client, "Unknown trailing argument(s)");
1435        } else {
1436            Permission permission = PERMISSION_NONE;
1437            if (argc == 4) {
1438                permission = stringToPermission(argv[3]);
1439                if (permission == PERMISSION_NONE) {
1440                    return syntaxError(client, "Unknown permission");
1441                }
1442            }
1443            if (int ret = sNetCtrl->createPhysicalNetwork(netId, permission)) {
1444                return operationError(client, "createPhysicalNetwork() failed", ret);
1445            }
1446        }
1447        return success(client);
1448    }
1449
1450    //    0       1       2
1451    // network destroy <netId>
1452    if (!strcmp(argv[1], "destroy")) {
1453        if (argc != 3) {
1454            return syntaxError(client, "Incorrect number of arguments");
1455        }
1456        unsigned netId = stringToNetId(argv[2]);
1457        if (int ret = sNetCtrl->destroyNetwork(netId)) {
1458            return operationError(client, "destroyNetwork() failed", ret);
1459        }
1460        return success(client);
1461    }
1462
1463    //    0       1      2      3
1464    // network default  set  <netId>
1465    // network default clear
1466    if (!strcmp(argv[1], "default")) {
1467        if (argc < 3) {
1468            return syntaxError(client, "Missing argument");
1469        }
1470        unsigned netId = NETID_UNSET;
1471        if (!strcmp(argv[2], "set")) {
1472            if (argc < 4) {
1473                return syntaxError(client, "Missing netId");
1474            }
1475            netId = stringToNetId(argv[3]);
1476        } else if (strcmp(argv[2], "clear")) {
1477            return syntaxError(client, "Unknown argument");
1478        }
1479        if (int ret = sNetCtrl->setDefaultNetwork(netId)) {
1480            return operationError(client, "setDefaultNetwork() failed", ret);
1481        }
1482        return success(client);
1483    }
1484
1485    //    0        1         2      3        4          5
1486    // network permission   user   set  <permission>  <uid> ...
1487    // network permission   user  clear    <uid> ...
1488    // network permission network  set  <permission> <netId> ...
1489    // network permission network clear   <netId> ...
1490    if (!strcmp(argv[1], "permission")) {
1491        if (argc < 5) {
1492            return syntaxError(client, "Missing argument");
1493        }
1494        int nextArg = 4;
1495        Permission permission = PERMISSION_NONE;
1496        if (!strcmp(argv[3], "set")) {
1497            permission = stringToPermission(argv[4]);
1498            if (permission == PERMISSION_NONE) {
1499                return syntaxError(client, "Unknown permission");
1500            }
1501            nextArg = 5;
1502        } else if (strcmp(argv[3], "clear")) {
1503            return syntaxError(client, "Unknown argument");
1504        }
1505        if (nextArg == argc) {
1506            return syntaxError(client, "Missing id");
1507        }
1508        std::vector<unsigned> ids;
1509        for (; nextArg < argc; ++nextArg) {
1510            char* endPtr;
1511            unsigned id = strtoul(argv[nextArg], &endPtr, 0);
1512            if (!*argv[nextArg] || *endPtr) {
1513                return syntaxError(client, "Invalid id");
1514            }
1515            ids.push_back(id);
1516        }
1517        if (!strcmp(argv[2], "user")) {
1518            sNetCtrl->setPermissionForUsers(permission, ids);
1519        } else if (!strcmp(argv[2], "network")) {
1520            if (int ret = sNetCtrl->setPermissionForNetworks(permission, ids)) {
1521                return operationError(client, "setPermissionForNetworks() failed", ret);
1522            }
1523        } else {
1524            return syntaxError(client, "Unknown argument");
1525        }
1526        return success(client);
1527    }
1528
1529    //    0      1     2       3           4
1530    // network users  add   <netId> [<uid>[-<uid>]] ...
1531    // network users remove <netId> [<uid>[-<uid>]] ...
1532    if (!strcmp(argv[1], "users")) {
1533        if (argc < 4) {
1534            return syntaxError(client, "Missing argument");
1535        }
1536        unsigned netId = stringToNetId(argv[3]);
1537        UidRanges uidRanges;
1538        if (!uidRanges.parseFrom(argc - 4, argv + 4)) {
1539            return syntaxError(client, "Invalid UIDs");
1540        }
1541        if (!strcmp(argv[2], "add")) {
1542            if (int ret = sNetCtrl->addUsersToNetwork(netId, uidRanges)) {
1543                return operationError(client, "addUsersToNetwork() failed", ret);
1544            }
1545        } else if (!strcmp(argv[2], "remove")) {
1546            if (int ret = sNetCtrl->removeUsersFromNetwork(netId, uidRanges)) {
1547                return operationError(client, "removeUsersFromNetwork() failed", ret);
1548            }
1549        } else {
1550            return syntaxError(client, "Unknown argument");
1551        }
1552        return success(client);
1553    }
1554
1555    //    0       1      2     3
1556    // network protect allow <uid> ...
1557    // network protect  deny <uid> ...
1558    if (!strcmp(argv[1], "protect")) {
1559        if (argc < 4) {
1560            return syntaxError(client, "Missing argument");
1561        }
1562        std::vector<uid_t> uids;
1563        for (int i = 3; i < argc; ++i) {
1564            uids.push_back(strtoul(argv[i], NULL, 0));
1565        }
1566        if (!strcmp(argv[2], "allow")) {
1567            sNetCtrl->allowProtect(uids);
1568        } else if (!strcmp(argv[2], "deny")) {
1569            sNetCtrl->denyProtect(uids);
1570        } else {
1571            return syntaxError(client, "Unknown argument");
1572        }
1573        return success(client);
1574    }
1575
1576    return syntaxError(client, "Unknown argument");
1577}
1578