CommandListener.cpp revision 31ea0b03afeedd17f703b7a6d1e5c9feb2d6000d 
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 <fcntl.h>
28#include <linux/if.h>
29
30#define LOG_TAG "CommandListener"
31
32#include <cutils/log.h>
33#include <netutils/ifc.h>
34#include <sysutils/SocketClient.h>
35
36#include "CommandListener.h"
37#include "ResponseCode.h"
38#include "ThrottleController.h"
39#include "BandwidthController.h"
40#include "SecondaryTableController.h"
41
42
43TetherController *CommandListener::sTetherCtrl = NULL;
44NatController *CommandListener::sNatCtrl = NULL;
45PppController *CommandListener::sPppCtrl = NULL;
46PanController *CommandListener::sPanCtrl = NULL;
47SoftapController *CommandListener::sSoftapCtrl = NULL;
48BandwidthController * CommandListener::sBandwidthCtrl = NULL;
49ResolverController *CommandListener::sResolverCtrl = NULL;
50SecondaryTableController *CommandListener::sSecondaryTableCtrl = NULL;
51
52CommandListener::CommandListener() :
53                 FrameworkListener("netd") {
54    registerCmd(new InterfaceCmd());
55    registerCmd(new IpFwdCmd());
56    registerCmd(new TetherCmd());
57    registerCmd(new NatCmd());
58    registerCmd(new ListTtysCmd());
59    registerCmd(new PppdCmd());
60    registerCmd(new PanCmd());
61    registerCmd(new SoftapCmd());
62    registerCmd(new BandwidthControlCmd());
63    registerCmd(new ResolverCmd());
64
65    if (!sSecondaryTableCtrl)
66        sSecondaryTableCtrl = new SecondaryTableController();
67    if (!sTetherCtrl)
68        sTetherCtrl = new TetherController();
69    if (!sNatCtrl)
70        sNatCtrl = new NatController(sSecondaryTableCtrl);
71    if (!sPppCtrl)
72        sPppCtrl = new PppController();
73    if (!sPanCtrl)
74        sPanCtrl = new PanController();
75    if (!sSoftapCtrl)
76        sSoftapCtrl = new SoftapController();
77    if (!sBandwidthCtrl)
78        sBandwidthCtrl = new BandwidthController();
79    if (!sResolverCtrl)
80        sResolverCtrl = new ResolverController();
81}
82
83CommandListener::InterfaceCmd::InterfaceCmd() :
84                 NetdCommand("interface") {
85}
86
87int CommandListener::writeFile(const char *path, const char *value, int size) {
88    int fd = open(path, O_WRONLY);
89    if (fd < 0) {
90        LOGE("Failed to open %s: %s", path, strerror(errno));
91        return -1;
92    }
93
94    if (write(fd, value, size) != size) {
95        LOGE("Failed to write %s: %s", path, strerror(errno));
96        close(fd);
97        return -1;
98    }
99    close(fd);
100    return 0;
101}
102
103int CommandListener::InterfaceCmd::runCommand(SocketClient *cli,
104                                                      int argc, char **argv) {
105    if (argc < 2) {
106        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
107        return 0;
108    }
109
110    if (!strcmp(argv[1], "list")) {
111        DIR *d;
112        struct dirent *de;
113
114        if (!(d = opendir("/sys/class/net"))) {
115            cli->sendMsg(ResponseCode::OperationFailed, "Failed to open sysfs dir", true);
116            return 0;
117        }
118
119        while((de = readdir(d))) {
120            if (de->d_name[0] == '.')
121                continue;
122            cli->sendMsg(ResponseCode::InterfaceListResult, de->d_name, false);
123        }
124        closedir(d);
125        cli->sendMsg(ResponseCode::CommandOkay, "Interface list completed", false);
126        return 0;
127    } else if (!strcmp(argv[1], "readrxcounter")) {
128        if (argc != 3) {
129            cli->sendMsg(ResponseCode::CommandSyntaxError,
130                    "Usage: interface readrxcounter <interface>", false);
131            return 0;
132        }
133        unsigned long rx = 0, tx = 0;
134        if (readInterfaceCounters(argv[2], &rx, &tx)) {
135            cli->sendMsg(ResponseCode::OperationFailed, "Failed to read counters", true);
136            return 0;
137        }
138
139        char *msg;
140        asprintf(&msg, "%lu", rx);
141        cli->sendMsg(ResponseCode::InterfaceRxCounterResult, msg, false);
142        free(msg);
143
144        return 0;
145    } else if (!strcmp(argv[1], "readtxcounter")) {
146        if (argc != 3) {
147            cli->sendMsg(ResponseCode::CommandSyntaxError,
148                    "Usage: interface readtxcounter <interface>", false);
149            return 0;
150        }
151        unsigned long rx = 0, tx = 0;
152        if (readInterfaceCounters(argv[2], &rx, &tx)) {
153            cli->sendMsg(ResponseCode::OperationFailed, "Failed to read counters", true);
154            return 0;
155        }
156
157        char *msg = NULL;
158        asprintf(&msg, "%lu", tx);
159        cli->sendMsg(ResponseCode::InterfaceTxCounterResult, msg, false);
160        free(msg);
161        return 0;
162    } else if (!strcmp(argv[1], "getthrottle")) {
163        if (argc != 4 || (argc == 4 && (strcmp(argv[3], "rx") && (strcmp(argv[3], "tx"))))) {
164            cli->sendMsg(ResponseCode::CommandSyntaxError,
165                    "Usage: interface getthrottle <interface> <rx|tx>", false);
166            return 0;
167        }
168        int val = 0;
169        int rc = 0;
170        int voldRc = ResponseCode::InterfaceRxThrottleResult;
171
172        if (!strcmp(argv[3], "rx")) {
173            rc = ThrottleController::getInterfaceRxThrottle(argv[2], &val);
174        } else {
175            rc = ThrottleController::getInterfaceTxThrottle(argv[2], &val);
176            voldRc = ResponseCode::InterfaceTxThrottleResult;
177        }
178        if (rc) {
179            cli->sendMsg(ResponseCode::OperationFailed, "Failed to get throttle", true);
180        } else {
181            char *msg = NULL;
182            asprintf(&msg, "%u", val);
183            cli->sendMsg(voldRc, msg, false);
184            free(msg);
185            return 0;
186        }
187        return 0;
188    } else if (!strcmp(argv[1], "setthrottle")) {
189        if (argc != 5) {
190            cli->sendMsg(ResponseCode::CommandSyntaxError,
191                    "Usage: interface setthrottle <interface> <rx_kbps> <tx_kbps>", false);
192            return 0;
193        }
194        if (ThrottleController::setInterfaceThrottle(argv[2], atoi(argv[3]), atoi(argv[4]))) {
195            cli->sendMsg(ResponseCode::OperationFailed, "Failed to set throttle", true);
196        } else {
197            cli->sendMsg(ResponseCode::CommandOkay, "Interface throttling set", false);
198        }
199        return 0;
200    } else {
201        /*
202         * These commands take a minimum of 3 arguments
203         */
204        if (argc < 3) {
205            cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
206            return 0;
207        }
208
209        //     0       1       2        3          4           5     6      7
210        // interface route add/remove iface default/secondary dest prefix gateway
211        if (!strcmp(argv[1], "route")) {
212            int prefix_length = 0;
213            if (argc < 8) {
214                cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
215                return 0;
216            }
217            if (sscanf(argv[6], "%d", &prefix_length) != 1) {
218                cli->sendMsg(ResponseCode::CommandParameterError, "Invalid route prefix", false);
219                return 0;
220            }
221            if (!strcmp(argv[2], "add")) {
222                if (!strcmp(argv[4], "default")) {
223                    if (ifc_add_route(argv[3], argv[5], prefix_length, argv[7])) {
224                        cli->sendMsg(ResponseCode::OperationFailed,
225                                "Failed to add route to default table", true);
226                    } else {
227                        cli->sendMsg(ResponseCode::CommandOkay,
228                                "Route added to default table", false);
229                    }
230                } else if (!strcmp(argv[4], "secondary")) {
231                    return sSecondaryTableCtrl->addRoute(cli, argv[3], argv[5],
232                            prefix_length, argv[7]);
233                } else {
234                    cli->sendMsg(ResponseCode::CommandParameterError,
235                            "Invalid route type, expecting 'default' or 'secondary'", false);
236                    return 0;
237                }
238            } else if (!strcmp(argv[2], "remove")) {
239                if (!strcmp(argv[4], "default")) {
240                    if (ifc_remove_route(argv[3], argv[5], prefix_length, argv[7])) {
241                        cli->sendMsg(ResponseCode::OperationFailed,
242                                "Failed to remove route from default table", true);
243                    } else {
244                        cli->sendMsg(ResponseCode::CommandOkay,
245                                "Route removed from default table", false);
246                    }
247                } else if (!strcmp(argv[4], "secondary")) {
248                    return sSecondaryTableCtrl->removeRoute(cli, argv[3], argv[5],
249                            prefix_length, argv[7]);
250                } else {
251                    cli->sendMsg(ResponseCode::CommandParameterError,
252                            "Invalid route type, expecting 'default' or 'secondary'", false);
253                    return 0;
254                }
255            } else {
256                cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown interface cmd", false);
257            }
258            return 0;
259        }
260
261        if (!strcmp(argv[1], "getcfg")) {
262            struct in_addr addr;
263            int prefixLength;
264            unsigned char hwaddr[6];
265            unsigned flags = 0;
266
267            ifc_init();
268            memset(hwaddr, 0, sizeof(hwaddr));
269
270            if (ifc_get_info(argv[2], &addr.s_addr, &prefixLength, &flags)) {
271                cli->sendMsg(ResponseCode::OperationFailed, "Interface not found", true);
272                ifc_close();
273                return 0;
274            }
275
276            if (ifc_get_hwaddr(argv[2], (void *) hwaddr)) {
277                LOGW("Failed to retrieve HW addr for %s (%s)", argv[2], strerror(errno));
278            }
279
280            char *addr_s = strdup(inet_ntoa(addr));
281            const char *updown, *brdcst, *loopbk, *ppp, *running, *multi;
282
283            updown =  (flags & IFF_UP)           ? "up" : "down";
284            brdcst =  (flags & IFF_BROADCAST)    ? " broadcast" : "";
285            loopbk =  (flags & IFF_LOOPBACK)     ? " loopback" : "";
286            ppp =     (flags & IFF_POINTOPOINT)  ? " point-to-point" : "";
287            running = (flags & IFF_RUNNING)      ? " running" : "";
288            multi =   (flags & IFF_MULTICAST)    ? " multicast" : "";
289
290            char *flag_s;
291
292            asprintf(&flag_s, "%s%s%s%s%s%s", updown, brdcst, loopbk, ppp, running, multi);
293
294            char *msg = NULL;
295            asprintf(&msg, "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x %s %d %s",
296                     hwaddr[0], hwaddr[1], hwaddr[2], hwaddr[3], hwaddr[4], hwaddr[5],
297                     addr_s, prefixLength, flag_s);
298
299            cli->sendMsg(ResponseCode::InterfaceGetCfgResult, msg, false);
300
301            free(addr_s);
302            free(flag_s);
303            free(msg);
304
305            ifc_close();
306            return 0;
307        } else if (!strcmp(argv[1], "setcfg")) {
308            // arglist: iface addr prefixLength flags
309            if (argc < 5) {
310                cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
311                return 0;
312            }
313            LOGD("Setting iface cfg");
314
315            struct in_addr addr;
316            unsigned flags = 0;
317
318            if (!inet_aton(argv[3], &addr)) {
319                cli->sendMsg(ResponseCode::CommandParameterError, "Invalid address", false);
320                return 0;
321            }
322
323            ifc_init();
324            if (ifc_set_addr(argv[2], addr.s_addr)) {
325                cli->sendMsg(ResponseCode::OperationFailed, "Failed to set address", true);
326                ifc_close();
327                return 0;
328            }
329
330            //Set prefix length on a non zero address
331            if (addr.s_addr != 0 && ifc_set_prefixLength(argv[2], atoi(argv[4]))) {
332                cli->sendMsg(ResponseCode::OperationFailed, "Failed to set prefixLength", true);
333                ifc_close();
334                return 0;
335            }
336
337            /* Process flags */
338            for (int i = 5; i < argc; i++) {
339                char *flag = argv[i];
340                if (!strcmp(flag, "up")) {
341                    LOGD("Trying to bring up %s", argv[2]);
342                    if (ifc_up(argv[2])) {
343                        LOGE("Error upping interface");
344                        cli->sendMsg(ResponseCode::OperationFailed, "Failed to up interface", true);
345                        ifc_close();
346                        return 0;
347                    }
348                } else if (!strcmp(flag, "down")) {
349                    LOGD("Trying to bring down %s", argv[2]);
350                    if (ifc_down(argv[2])) {
351                        LOGE("Error downing interface");
352                        cli->sendMsg(ResponseCode::OperationFailed, "Failed to down interface", true);
353                        ifc_close();
354                        return 0;
355                    }
356                } else if (!strcmp(flag, "broadcast")) {
357                    LOGD("broadcast flag ignored");
358                } else if (!strcmp(flag, "multicast")) {
359                    LOGD("multicast flag ignored");
360                } else {
361                    cli->sendMsg(ResponseCode::CommandParameterError, "Flag unsupported", false);
362                    ifc_close();
363                    return 0;
364                }
365            }
366
367            cli->sendMsg(ResponseCode::CommandOkay, "Interface configuration set", false);
368            ifc_close();
369            return 0;
370        } else if (!strcmp(argv[1], "clearaddrs")) {
371            // arglist: iface
372            LOGD("Clearing all IP addresses on %s", argv[2]);
373
374            ifc_clear_addresses(argv[2]);
375
376            cli->sendMsg(ResponseCode::CommandOkay, "Interface IP addresses cleared", false);
377            return 0;
378        } else if (!strcmp(argv[1], "ipv6privacyextensions")) {
379            if (argc != 4) {
380                cli->sendMsg(ResponseCode::CommandSyntaxError,
381                        "Usage: interface ipv6privacyextensions <interface> <enable|disable>",
382                        false);
383                return 0;
384            }
385
386            char *tmp;
387            asprintf(&tmp, "/proc/sys/net/ipv6/conf/%s/use_tempaddr", argv[2]);
388
389            if (writeFile(tmp, !strncmp(argv[3], "enable", 7) ? "2" : "0", 1) < 0) {
390                free(tmp);
391                cli->sendMsg(ResponseCode::OperationFailed,
392                        "Failed to set ipv6 privacy extensions", true);
393                return 0;
394            }
395
396            free(tmp);
397            cli->sendMsg(ResponseCode::CommandOkay, "IPv6 privacy extensions changed", false);
398            return 0;
399        } else if (!strcmp(argv[1], "ipv6")) {
400            if (argc != 4) {
401                cli->sendMsg(ResponseCode::CommandSyntaxError,
402                        "Usage: interface ipv6 <interface> <enable|disable>",
403                        false);
404                return 0;
405            }
406
407            char *tmp;
408            asprintf(&tmp, "/proc/sys/net/ipv6/conf/%s/disable_ipv6", argv[2]);
409
410            if (writeFile(tmp, !strncmp(argv[3], "enable", 7) ? "0" : "1", 1) < 0) {
411                free(tmp);
412                cli->sendMsg(ResponseCode::OperationFailed,
413                        "Failed to change IPv6 state", true);
414                return 0;
415            }
416
417            free(tmp);
418            cli->sendMsg(ResponseCode::CommandOkay, "IPv6 state changed", false);
419            return 0;
420        } else {
421            cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown interface cmd", false);
422            return 0;
423        }
424    }
425    return 0;
426}
427
428
429CommandListener::ListTtysCmd::ListTtysCmd() :
430                 NetdCommand("list_ttys") {
431}
432
433int CommandListener::ListTtysCmd::runCommand(SocketClient *cli,
434                                             int argc, char **argv) {
435    TtyCollection *tlist = sPppCtrl->getTtyList();
436    TtyCollection::iterator it;
437
438    for (it = tlist->begin(); it != tlist->end(); ++it) {
439        cli->sendMsg(ResponseCode::TtyListResult, *it, false);
440    }
441
442    cli->sendMsg(ResponseCode::CommandOkay, "Ttys listed.", false);
443    return 0;
444}
445
446CommandListener::IpFwdCmd::IpFwdCmd() :
447                 NetdCommand("ipfwd") {
448}
449
450int CommandListener::IpFwdCmd::runCommand(SocketClient *cli,
451                                                      int argc, char **argv) {
452    int rc = 0;
453
454    if (argc < 2) {
455        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
456        return 0;
457    }
458
459    if (!strcmp(argv[1], "status")) {
460        char *tmp = NULL;
461
462        asprintf(&tmp, "Forwarding %s", (sTetherCtrl->getIpFwdEnabled() ? "enabled" : "disabled"));
463        cli->sendMsg(ResponseCode::IpFwdStatusResult, tmp, false);
464        free(tmp);
465        return 0;
466    } else if (!strcmp(argv[1], "enable")) {
467        rc = sTetherCtrl->setIpFwdEnabled(true);
468    } else if (!strcmp(argv[1], "disable")) {
469        rc = sTetherCtrl->setIpFwdEnabled(false);
470    } else {
471        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown ipfwd cmd", false);
472        return 0;
473    }
474
475    if (!rc) {
476        cli->sendMsg(ResponseCode::CommandOkay, "ipfwd operation succeeded", false);
477    } else {
478        cli->sendMsg(ResponseCode::OperationFailed, "ipfwd operation failed", true);
479    }
480
481    return 0;
482}
483
484CommandListener::TetherCmd::TetherCmd() :
485                 NetdCommand("tether") {
486}
487
488int CommandListener::TetherCmd::runCommand(SocketClient *cli,
489                                                      int argc, char **argv) {
490    int rc = 0;
491
492    if (argc < 2) {
493        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
494        return 0;
495    }
496
497    if (!strcmp(argv[1], "stop")) {
498        rc = sTetherCtrl->stopTethering();
499    } else if (!strcmp(argv[1], "status")) {
500        char *tmp = NULL;
501
502        asprintf(&tmp, "Tethering services %s",
503                 (sTetherCtrl->isTetheringStarted() ? "started" : "stopped"));
504        cli->sendMsg(ResponseCode::TetherStatusResult, tmp, false);
505        free(tmp);
506        return 0;
507    } else {
508        /*
509         * These commands take a minimum of 4 arguments
510         */
511        if (argc < 4) {
512            cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
513            return 0;
514        }
515
516        if (!strcmp(argv[1], "start")) {
517            if (argc % 2 == 1) {
518                cli->sendMsg(ResponseCode::CommandSyntaxError, "Bad number of arguments", false);
519                return 0;
520            }
521
522            int num_addrs = argc - 2;
523            int arg_index = 2;
524            int array_index = 0;
525            in_addr *addrs = (in_addr *)malloc(sizeof(in_addr) * num_addrs);
526            while (array_index < num_addrs) {
527                if (!inet_aton(argv[arg_index++], &(addrs[array_index++]))) {
528                    cli->sendMsg(ResponseCode::CommandParameterError, "Invalid address", false);
529                    free(addrs);
530                    return 0;
531                }
532            }
533            rc = sTetherCtrl->startTethering(num_addrs, addrs);
534            free(addrs);
535        } else if (!strcmp(argv[1], "interface")) {
536            if (!strcmp(argv[2], "add")) {
537                rc = sTetherCtrl->tetherInterface(argv[3]);
538            } else if (!strcmp(argv[2], "remove")) {
539                rc = sTetherCtrl->untetherInterface(argv[3]);
540            } else if (!strcmp(argv[2], "list")) {
541                InterfaceCollection *ilist = sTetherCtrl->getTetheredInterfaceList();
542                InterfaceCollection::iterator it;
543
544                for (it = ilist->begin(); it != ilist->end(); ++it) {
545                    cli->sendMsg(ResponseCode::TetherInterfaceListResult, *it, false);
546                }
547            } else {
548                cli->sendMsg(ResponseCode::CommandParameterError,
549                             "Unknown tether interface operation", false);
550                return 0;
551            }
552        } else if (!strcmp(argv[1], "dns")) {
553            if (!strcmp(argv[2], "set")) {
554                rc = sTetherCtrl->setDnsForwarders(&argv[3], argc - 3);
555            } else if (!strcmp(argv[2], "list")) {
556                NetAddressCollection *dlist = sTetherCtrl->getDnsForwarders();
557                NetAddressCollection::iterator it;
558
559                for (it = dlist->begin(); it != dlist->end(); ++it) {
560                    cli->sendMsg(ResponseCode::TetherDnsFwdTgtListResult, inet_ntoa(*it), false);
561                }
562            } else {
563                cli->sendMsg(ResponseCode::CommandParameterError,
564                             "Unknown tether interface operation", false);
565                return 0;
566            }
567        } else {
568            cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown tether cmd", false);
569            return 0;
570        }
571    }
572
573    if (!rc) {
574        cli->sendMsg(ResponseCode::CommandOkay, "Tether operation succeeded", false);
575    } else {
576        cli->sendMsg(ResponseCode::OperationFailed, "Tether operation failed", true);
577    }
578
579    return 0;
580}
581
582CommandListener::NatCmd::NatCmd() :
583                 NetdCommand("nat") {
584}
585
586int CommandListener::NatCmd::runCommand(SocketClient *cli,
587                                                      int argc, char **argv) {
588    int rc = 0;
589
590    if (argc < 5) {
591        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
592        return 0;
593    }
594
595    if (!strcmp(argv[1], "enable")) {
596        rc = sNatCtrl->enableNat(argc, argv);
597        if(!rc) {
598            /* Ignore ifaces for now. */
599            rc = sBandwidthCtrl->setGlobalAlertInForwardChain();
600        }
601    } else if (!strcmp(argv[1], "disable")) {
602        /* Ignore ifaces for now. */
603        rc = sBandwidthCtrl->removeGlobalAlertInForwardChain();
604        rc |= sNatCtrl->disableNat(argc, argv);
605    } else {
606        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown nat cmd", false);
607        return 0;
608    }
609
610    if (!rc) {
611        cli->sendMsg(ResponseCode::CommandOkay, "Nat operation succeeded", false);
612    } else {
613        cli->sendMsg(ResponseCode::OperationFailed, "Nat operation failed", true);
614    }
615
616    return 0;
617}
618
619CommandListener::PppdCmd::PppdCmd() :
620                 NetdCommand("pppd") {
621}
622
623int CommandListener::PppdCmd::runCommand(SocketClient *cli,
624                                                      int argc, char **argv) {
625    int rc = 0;
626
627    if (argc < 3) {
628        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
629        return 0;
630    }
631
632    if (!strcmp(argv[1], "attach")) {
633        struct in_addr l, r, dns1, dns2;
634
635        memset(&dns1, sizeof(struct in_addr), 0);
636        memset(&dns2, sizeof(struct in_addr), 0);
637
638        if (!inet_aton(argv[3], &l)) {
639            cli->sendMsg(ResponseCode::CommandParameterError, "Invalid local address", false);
640            return 0;
641        }
642        if (!inet_aton(argv[4], &r)) {
643            cli->sendMsg(ResponseCode::CommandParameterError, "Invalid remote address", false);
644            return 0;
645        }
646        if ((argc > 3) && (!inet_aton(argv[5], &dns1))) {
647            cli->sendMsg(ResponseCode::CommandParameterError, "Invalid dns1 address", false);
648            return 0;
649        }
650        if ((argc > 4) && (!inet_aton(argv[6], &dns2))) {
651            cli->sendMsg(ResponseCode::CommandParameterError, "Invalid dns2 address", false);
652            return 0;
653        }
654        rc = sPppCtrl->attachPppd(argv[2], l, r, dns1, dns2);
655    } else if (!strcmp(argv[1], "detach")) {
656        rc = sPppCtrl->detachPppd(argv[2]);
657    } else {
658        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown pppd cmd", false);
659        return 0;
660    }
661
662    if (!rc) {
663        cli->sendMsg(ResponseCode::CommandOkay, "Pppd operation succeeded", false);
664    } else {
665        cli->sendMsg(ResponseCode::OperationFailed, "Pppd operation failed", true);
666    }
667
668    return 0;
669}
670
671CommandListener::PanCmd::PanCmd() :
672                 NetdCommand("pan") {
673}
674
675int CommandListener::PanCmd::runCommand(SocketClient *cli,
676                                        int argc, char **argv) {
677    int rc = 0;
678
679    if (argc < 2) {
680        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
681        return 0;
682    }
683
684    if (!strcmp(argv[1], "start")) {
685        rc = sPanCtrl->startPan();
686    } else if (!strcmp(argv[1], "stop")) {
687        rc = sPanCtrl->stopPan();
688    } else if (!strcmp(argv[1], "status")) {
689        char *tmp = NULL;
690
691        asprintf(&tmp, "Pan services %s",
692                 (sPanCtrl->isPanStarted() ? "started" : "stopped"));
693        cli->sendMsg(ResponseCode::PanStatusResult, tmp, false);
694        free(tmp);
695        return 0;
696    } else {
697        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown pan cmd", false);
698        return 0;
699    }
700
701    if (!rc) {
702        cli->sendMsg(ResponseCode::CommandOkay, "Pan operation succeeded", false);
703    } else {
704        cli->sendMsg(ResponseCode::OperationFailed, "Pan operation failed", true);
705    }
706
707    return 0;
708}
709
710CommandListener::SoftapCmd::SoftapCmd() :
711                 NetdCommand("softap") {
712}
713
714int CommandListener::SoftapCmd::runCommand(SocketClient *cli,
715                                        int argc, char **argv) {
716    int rc = 0, flag = 0;
717    char *retbuf = NULL;
718
719    if (argc < 2) {
720        cli->sendMsg(ResponseCode::CommandSyntaxError, "Softap Missing argument", false);
721        return 0;
722    }
723
724    if (!strcmp(argv[1], "start")) {
725        rc = sSoftapCtrl->startDriver(argv[2]);
726    } else if (!strcmp(argv[1], "stop")) {
727        rc = sSoftapCtrl->stopDriver(argv[2]);
728    } else if (!strcmp(argv[1], "startap")) {
729        rc = sSoftapCtrl->startSoftap();
730    } else if (!strcmp(argv[1], "stopap")) {
731        rc = sSoftapCtrl->stopSoftap();
732    } else if (!strcmp(argv[1], "fwreload")) {
733        rc = sSoftapCtrl->fwReloadSoftap(argc, argv);
734    } else if (!strcmp(argv[1], "clients")) {
735        rc = sSoftapCtrl->clientsSoftap(&retbuf);
736        if (!rc) {
737            cli->sendMsg(ResponseCode::CommandOkay, retbuf, false);
738            free(retbuf);
739            return 0;
740        }
741    } else if (!strcmp(argv[1], "status")) {
742        asprintf(&retbuf, "Softap service %s",
743                 (sSoftapCtrl->isSoftapStarted() ? "started" : "stopped"));
744        cli->sendMsg(ResponseCode::SoftapStatusResult, retbuf, false);
745        free(retbuf);
746        return 0;
747    } else if (!strcmp(argv[1], "set")) {
748        rc = sSoftapCtrl->setSoftap(argc, argv);
749    } else {
750        cli->sendMsg(ResponseCode::CommandSyntaxError, "Softap Unknown cmd", false);
751        return 0;
752    }
753
754    if (!rc) {
755        cli->sendMsg(ResponseCode::CommandOkay, "Softap operation succeeded", false);
756    } else {
757        cli->sendMsg(ResponseCode::OperationFailed, "Softap operation failed", true);
758    }
759
760    return 0;
761}
762
763CommandListener::ResolverCmd::ResolverCmd() :
764        NetdCommand("resolver") {
765}
766
767int CommandListener::ResolverCmd::runCommand(SocketClient *cli, int argc, char **argv) {
768    int rc = 0;
769    struct in_addr addr;
770
771    if (argc < 2) {
772        cli->sendMsg(ResponseCode::CommandSyntaxError, "Resolver missing arguments", false);
773        return 0;
774    }
775
776    if (!strcmp(argv[1], "setdefaultif")) { // "resolver setdefaultif <iface>"
777        if (argc == 3) {
778            rc = sResolverCtrl->setDefaultInterface(argv[2]);
779        } else {
780            cli->sendMsg(ResponseCode::CommandSyntaxError,
781                    "Wrong number of arguments to resolver setdefaultif", false);
782            return 0;
783        }
784    } else if (!strcmp(argv[1], "setifdns")) { // "resolver setifdns <iface> <dns1> <dns2> ..."
785        if (argc >= 4) {
786            rc = sResolverCtrl->setInterfaceDnsServers(argv[2], &argv[3], argc - 3);
787        } else {
788            cli->sendMsg(ResponseCode::CommandSyntaxError,
789                    "Wrong number of arguments to resolver setifdns", false);
790            return 0;
791        }
792
793        // set the address of the interface to which the name servers
794        // are bound. Required in order to bind to right interface when
795        // doing the dns query.
796        if (!rc) {
797            ifc_init();
798            ifc_get_info(argv[2], &addr.s_addr, NULL, 0);
799
800            rc = sResolverCtrl->setInterfaceAddress(argv[2], &addr);
801        }
802    } else if (!strcmp(argv[1], "flushdefaultif")) { // "resolver flushdefaultif"
803        if (argc == 2) {
804            rc = sResolverCtrl->flushDefaultDnsCache();
805        } else {
806            cli->sendMsg(ResponseCode::CommandSyntaxError,
807                    "Wrong number of arguments to resolver flushdefaultif", false);
808            return 0;
809        }
810    } else if (!strcmp(argv[1], "flushif")) { // "resolver flushif <iface>"
811        if (argc == 3) {
812            rc = sResolverCtrl->flushInterfaceDnsCache(argv[2]);
813        } else {
814            cli->sendMsg(ResponseCode::CommandSyntaxError,
815                    "Wrong number of arguments to resolver setdefaultif", false);
816            return 0;
817        }
818    } else {
819        cli->sendMsg(ResponseCode::CommandSyntaxError,"Resolver unknown command", false);
820        return 0;
821    }
822
823    if (!rc) {
824        cli->sendMsg(ResponseCode::CommandOkay, "Resolver command succeeded", false);
825    } else {
826        cli->sendMsg(ResponseCode::OperationFailed, "Resolver command failed", true);
827    }
828
829    return 0;
830}
831
832int CommandListener::readInterfaceCounters(const char *iface, unsigned long *rx, unsigned long *tx) {
833    FILE *fp = fopen("/proc/net/dev", "r");
834    if (!fp) {
835        LOGE("Failed to open /proc/net/dev (%s)", strerror(errno));
836        return -1;
837    }
838
839    char buffer[512];
840
841    fgets(buffer, sizeof(buffer), fp); // Header 1
842    fgets(buffer, sizeof(buffer), fp); // Header 2
843    while(fgets(buffer, sizeof(buffer), fp)) {
844        buffer[strlen(buffer)-1] = '\0';
845
846        char name[31];
847        unsigned long d;
848        sscanf(buffer, "%30s %lu %lu %lu %lu %lu %lu %lu %lu %lu",
849                name, rx, &d, &d, &d, &d, &d, &d, &d, tx);
850        char *rxString = strchr(name, ':');
851        *rxString = '\0';
852        rxString++;
853        // when the rx count gets too big it changes from "name: 999" to "name:1000"
854        // and the sscanf munge the two together.  Detect that and fix
855        // note that all the %lu will be off by one and the real tx value will be in d
856        if (*rxString != '\0') {
857            *tx = d;
858            sscanf(rxString, "%20lu", rx);
859        }
860        if (strcmp(name, iface)) {
861            continue;
862        }
863        fclose(fp);
864        return 0;
865    }
866
867    fclose(fp);
868    *rx = 0;
869    *tx = 0;
870    return 0;
871}
872
873CommandListener::BandwidthControlCmd::BandwidthControlCmd() :
874    NetdCommand("bandwidth") {
875}
876
877void CommandListener::BandwidthControlCmd::sendGenericSyntaxError(SocketClient *cli, const char *usageMsg) {
878    char *msg;
879    asprintf(&msg, "Usage: bandwidth %s", usageMsg);
880    cli->sendMsg(ResponseCode::CommandSyntaxError, msg, false);
881    free(msg);
882}
883
884void CommandListener::BandwidthControlCmd::sendGenericOkFail(SocketClient *cli, int cond) {
885    if (!cond) {
886        cli->sendMsg(ResponseCode::CommandOkay, "Bandwidth command succeeeded", false);
887    } else {
888        cli->sendMsg(ResponseCode::OperationFailed, "Bandwidth command failed", false);
889    }
890}
891
892void CommandListener::BandwidthControlCmd::sendGenericOpFailed(SocketClient *cli, const char *errMsg) {
893    cli->sendMsg(ResponseCode::OperationFailed, errMsg, false);
894}
895
896int CommandListener::BandwidthControlCmd::runCommand(SocketClient *cli, int argc, char **argv) {
897    if (argc < 2) {
898        sendGenericSyntaxError(cli, "<cmds> <args...>");
899        return 0;
900    }
901
902    ALOGV("bwctrlcmd: argc=%d %s %s ...", argc, argv[0], argv[1]);
903
904    if (!strcmp(argv[1], "enable")) {
905        int rc = sBandwidthCtrl->enableBandwidthControl();
906        sendGenericOkFail(cli, rc);
907        return 0;
908
909    }
910    if (!strcmp(argv[1], "disable")) {
911        int rc = sBandwidthCtrl->disableBandwidthControl();
912        sendGenericOkFail(cli, rc);
913        return 0;
914
915    }
916    if (!strcmp(argv[1], "removequota") || !strcmp(argv[1], "rq")) {
917        if (argc != 3) {
918            sendGenericSyntaxError(cli, "removequota <interface>");
919            return 0;
920        }
921        int rc = sBandwidthCtrl->removeInterfaceSharedQuota(argv[2]);
922        sendGenericOkFail(cli, rc);
923        return 0;
924
925    }
926    if (!strcmp(argv[1], "getquota") || !strcmp(argv[1], "gq")) {
927        int64_t bytes;
928        if (argc != 2) {
929            sendGenericSyntaxError(cli, "getquota");
930            return 0;
931        }
932        int rc = sBandwidthCtrl->getInterfaceSharedQuota(&bytes);
933        if (rc) {
934            sendGenericOpFailed(cli, "Failed to get quota");
935            return 0;
936        }
937
938        char *msg;
939        asprintf(&msg, "%lld", bytes);
940        cli->sendMsg(ResponseCode::QuotaCounterResult, msg, false);
941        free(msg);
942        return 0;
943
944    }
945    if (!strcmp(argv[1], "getiquota") || !strcmp(argv[1], "giq")) {
946        int64_t bytes;
947        if (argc != 3) {
948            sendGenericSyntaxError(cli, "getiquota <iface>");
949            return 0;
950        }
951
952        int rc = sBandwidthCtrl->getInterfaceQuota(argv[2], &bytes);
953        if (rc) {
954            sendGenericOpFailed(cli, "Failed to get quota");
955            return 0;
956        }
957        char *msg;
958        asprintf(&msg, "%lld", bytes);
959        cli->sendMsg(ResponseCode::QuotaCounterResult, msg, false);
960        free(msg);
961        return 0;
962
963    }
964    if (!strcmp(argv[1], "setquota") || !strcmp(argv[1], "sq")) {
965        if (argc != 4) {
966            sendGenericSyntaxError(cli, "setquota <interface> <bytes>");
967            return 0;
968        }
969        int rc = sBandwidthCtrl->setInterfaceSharedQuota(argv[2], atoll(argv[3]));
970        sendGenericOkFail(cli, rc);
971        return 0;
972    }
973    if (!strcmp(argv[1], "setquotas") || !strcmp(argv[1], "sqs")) {
974        int rc;
975        if (argc < 4) {
976            sendGenericSyntaxError(cli, "setquotas <bytes> <interface> ...");
977            return 0;
978        }
979
980        for (int q = 3; argc >= 4; q++, argc--) {
981            rc = sBandwidthCtrl->setInterfaceSharedQuota(argv[q], atoll(argv[2]));
982            if (rc) {
983                char *msg;
984                asprintf(&msg, "bandwidth setquotas %s %s failed", argv[2], argv[q]);
985                cli->sendMsg(ResponseCode::OperationFailed,
986                             msg, false);
987                free(msg);
988                return 0;
989            }
990        }
991        sendGenericOkFail(cli, rc);
992        return 0;
993
994    }
995    if (!strcmp(argv[1], "removequotas") || !strcmp(argv[1], "rqs")) {
996        int rc;
997        if (argc < 3) {
998            sendGenericSyntaxError(cli, "removequotas <interface> ...");
999            return 0;
1000        }
1001
1002        for (int q = 2; argc >= 3; q++, argc--) {
1003            rc = sBandwidthCtrl->removeInterfaceSharedQuota(argv[q]);
1004            if (rc) {
1005                char *msg;
1006                asprintf(&msg, "bandwidth removequotas %s failed", argv[q]);
1007                cli->sendMsg(ResponseCode::OperationFailed,
1008                             msg, false);
1009                free(msg);
1010                return 0;
1011            }
1012        }
1013        sendGenericOkFail(cli, rc);
1014        return 0;
1015
1016    }
1017    if (!strcmp(argv[1], "removeiquota") || !strcmp(argv[1], "riq")) {
1018        if (argc != 3) {
1019            sendGenericSyntaxError(cli, "removeiquota <interface>");
1020            return 0;
1021        }
1022        int rc = sBandwidthCtrl->removeInterfaceQuota(argv[2]);
1023        sendGenericOkFail(cli, rc);
1024        return 0;
1025
1026    }
1027    if (!strcmp(argv[1], "setiquota") || !strcmp(argv[1], "siq")) {
1028        if (argc != 4) {
1029            sendGenericSyntaxError(cli, "setiquota <interface> <bytes>");
1030            return 0;
1031        }
1032        int rc = sBandwidthCtrl->setInterfaceQuota(argv[2], atoll(argv[3]));
1033        sendGenericOkFail(cli, rc);
1034        return 0;
1035
1036    }
1037    if (!strcmp(argv[1], "addnaughtyapps") || !strcmp(argv[1], "ana")) {
1038        if (argc < 3) {
1039            sendGenericSyntaxError(cli, "addnaughtyapps <appUid> ...");
1040            return 0;
1041        }
1042        int rc = sBandwidthCtrl->addNaughtyApps(argc - 2, argv + 2);
1043        sendGenericOkFail(cli, rc);
1044        return 0;
1045
1046
1047    }
1048    if (!strcmp(argv[1], "removenaughtyapps") || !strcmp(argv[1], "rna")) {
1049        if (argc < 3) {
1050            sendGenericSyntaxError(cli, "removenaughtyapps <appUid> ...");
1051            return 0;
1052        }
1053        int rc = sBandwidthCtrl->removeNaughtyApps(argc - 2, argv + 2);
1054        sendGenericOkFail(cli, rc);
1055        return 0;
1056
1057    }
1058    if (!strcmp(argv[1], "setglobalalert") || !strcmp(argv[1], "sga")) {
1059        if (argc != 3) {
1060            sendGenericSyntaxError(cli, "setglobalalert <bytes>");
1061            return 0;
1062        }
1063        int rc = sBandwidthCtrl->setGlobalAlert(atoll(argv[2]));
1064        sendGenericOkFail(cli, rc);
1065        return 0;
1066
1067    }
1068    if (!strcmp(argv[1], "debugsettetherglobalalert") || !strcmp(argv[1], "dstga")) {
1069        if (argc != 4) {
1070            sendGenericSyntaxError(cli, "debugsettetherglobalalert <interface0> <interface1>");
1071            return 0;
1072        }
1073        /* We ignore the interfaces for now. */
1074        int rc = sBandwidthCtrl->setGlobalAlertInForwardChain();
1075        sendGenericOkFail(cli, rc);
1076        return 0;
1077
1078    }
1079    if (!strcmp(argv[1], "removeglobalalert") || !strcmp(argv[1], "rga")) {
1080        if (argc != 2) {
1081            sendGenericSyntaxError(cli, "removeglobalalert");
1082            return 0;
1083        }
1084        int rc = sBandwidthCtrl->removeGlobalAlert();
1085        sendGenericOkFail(cli, rc);
1086        return 0;
1087
1088    }
1089    if (!strcmp(argv[1], "debugremovetetherglobalalert") || !strcmp(argv[1], "drtga")) {
1090        if (argc != 4) {
1091            sendGenericSyntaxError(cli, "debugremovetetherglobalalert <interface0> <interface1>");
1092            return 0;
1093        }
1094        /* We ignore the interfaces for now. */
1095        int rc = sBandwidthCtrl->removeGlobalAlertInForwardChain();
1096        sendGenericOkFail(cli, rc);
1097        return 0;
1098
1099    }
1100    if (!strcmp(argv[1], "setsharedalert") || !strcmp(argv[1], "ssa")) {
1101        if (argc != 3) {
1102            sendGenericSyntaxError(cli, "setsharedalert <bytes>");
1103            return 0;
1104        }
1105        int rc = sBandwidthCtrl->setSharedAlert(atoll(argv[2]));
1106        sendGenericOkFail(cli, rc);
1107        return 0;
1108
1109    }
1110    if (!strcmp(argv[1], "removesharedalert") || !strcmp(argv[1], "rsa")) {
1111        if (argc != 2) {
1112            sendGenericSyntaxError(cli, "removesharedalert");
1113            return 0;
1114        }
1115        int rc = sBandwidthCtrl->removeSharedAlert();
1116        sendGenericOkFail(cli, rc);
1117        return 0;
1118
1119    }
1120    if (!strcmp(argv[1], "setinterfacealert") || !strcmp(argv[1], "sia")) {
1121        if (argc != 4) {
1122            sendGenericSyntaxError(cli, "setinterfacealert <interface> <bytes>");
1123            return 0;
1124        }
1125        int rc = sBandwidthCtrl->setInterfaceAlert(argv[2], atoll(argv[3]));
1126        sendGenericOkFail(cli, rc);
1127        return 0;
1128
1129    }
1130    if (!strcmp(argv[1], "removeinterfacealert") || !strcmp(argv[1], "ria")) {
1131        if (argc != 3) {
1132            sendGenericSyntaxError(cli, "removeinterfacealert <interface>");
1133            return 0;
1134        }
1135        int rc = sBandwidthCtrl->removeInterfaceAlert(argv[2]);
1136        sendGenericOkFail(cli, rc);
1137        return 0;
1138
1139    }
1140    if (!strcmp(argv[1], "gettetherstats") || !strcmp(argv[1], "gts")) {
1141        BandwidthController::TetherStats tetherStats;
1142        std::string extraProcessingInfo = "";
1143        if (argc != 4) {
1144            sendGenericSyntaxError(cli, "gettetherstats <interface0> <interface1>");
1145            return 0;
1146        }
1147
1148        tetherStats.ifaceIn = argv[2];
1149        tetherStats.ifaceOut = argv[3];
1150        int rc = sBandwidthCtrl->getTetherStats(tetherStats, extraProcessingInfo);
1151        if (rc) {
1152                extraProcessingInfo.insert(0, "Failed to get tethering stats.\n");
1153                sendGenericOpFailed(cli, extraProcessingInfo.c_str());
1154            return 0;
1155        }
1156
1157        char *msg = tetherStats.getStatsLine();
1158        cli->sendMsg(ResponseCode::TetheringStatsResult, msg, false);
1159        free(msg);
1160        return 0;
1161
1162    }
1163
1164    cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown bandwidth cmd", false);
1165    return 0;
1166}
1167