CommandListener.cpp revision 1d93e170f13b221362ee268fdc94b25db06c21c9 
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#include <stdlib.h>
18#include <sys/socket.h>
19#include <sys/types.h>
20#include <netinet/in.h>
21#include <arpa/inet.h>
22#include <dirent.h>
23#include <errno.h>
24#include <string.h>
25
26#include <linux/if.h>
27
28#define LOG_TAG "CommandListener"
29#include <cutils/log.h>
30
31#include <sysutils/SocketClient.h>
32
33#include "CommandListener.h"
34#include "ResponseCode.h"
35#include "ThrottleController.h"
36
37
38extern "C" int ifc_init(void);
39extern "C" int ifc_get_hwaddr(const char *name, void *ptr);
40extern "C" int ifc_get_info(const char *name, in_addr_t *addr, int *prefixLength, unsigned *flags);
41extern "C" int ifc_set_addr(const char *name, in_addr_t addr);
42extern "C" int ifc_set_prefixLength(const char *name, int prefixLength);
43extern "C" int ifc_up(const char *name);
44extern "C" int ifc_down(const char *name);
45
46TetherController *CommandListener::sTetherCtrl = NULL;
47NatController *CommandListener::sNatCtrl = NULL;
48PppController *CommandListener::sPppCtrl = NULL;
49PanController *CommandListener::sPanCtrl = NULL;
50SoftapController *CommandListener::sSoftapCtrl = NULL;
51UsbController *CommandListener::sUsbCtrl = NULL;
52
53CommandListener::CommandListener() :
54                 FrameworkListener("netd") {
55    registerCmd(new InterfaceCmd());
56    registerCmd(new IpFwdCmd());
57    registerCmd(new TetherCmd());
58    registerCmd(new NatCmd());
59    registerCmd(new ListTtysCmd());
60    registerCmd(new PppdCmd());
61    registerCmd(new PanCmd());
62    registerCmd(new SoftapCmd());
63    registerCmd(new UsbCmd());
64
65    if (!sTetherCtrl)
66        sTetherCtrl = new TetherController();
67    if (!sNatCtrl)
68        sNatCtrl = new NatController();
69    if (!sPppCtrl)
70        sPppCtrl = new PppController();
71    if (!sPanCtrl)
72        sPanCtrl = new PanController();
73    if (!sSoftapCtrl)
74        sSoftapCtrl = new SoftapController();
75    if (!sUsbCtrl)
76        sUsbCtrl = new UsbController();
77}
78
79CommandListener::InterfaceCmd::InterfaceCmd() :
80                 NetdCommand("interface") {
81}
82
83int CommandListener::InterfaceCmd::runCommand(SocketClient *cli,
84                                                      int argc, char **argv) {
85    if (argc < 2) {
86        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
87        return 0;
88    }
89
90    if (!strcmp(argv[1], "list")) {
91        DIR *d;
92        struct dirent *de;
93
94        if (!(d = opendir("/sys/class/net"))) {
95            cli->sendMsg(ResponseCode::OperationFailed, "Failed to open sysfs dir", true);
96            return 0;
97        }
98
99        while((de = readdir(d))) {
100            if (de->d_name[0] == '.')
101                continue;
102            cli->sendMsg(ResponseCode::InterfaceListResult, de->d_name, false);
103        }
104        closedir(d);
105        cli->sendMsg(ResponseCode::CommandOkay, "Interface list completed", false);
106        return 0;
107    } else if (!strcmp(argv[1], "readrxcounter")) {
108        if (argc != 3) {
109            cli->sendMsg(ResponseCode::CommandSyntaxError,
110                    "Usage: interface readrxcounter <interface>", false);
111            return 0;
112        }
113        unsigned long rx = 0, tx = 0;
114        if (readInterfaceCounters(argv[2], &rx, &tx)) {
115            cli->sendMsg(ResponseCode::OperationFailed, "Failed to read counters", true);
116            return 0;
117        }
118
119        char *msg;
120        asprintf(&msg, "%lu", rx);
121        cli->sendMsg(ResponseCode::InterfaceRxCounterResult, msg, false);
122        free(msg);
123
124        return 0;
125    } else if (!strcmp(argv[1], "readtxcounter")) {
126        if (argc != 3) {
127            cli->sendMsg(ResponseCode::CommandSyntaxError,
128                    "Usage: interface readtxcounter <interface>", false);
129            return 0;
130        }
131        unsigned long rx = 0, tx = 0;
132        if (readInterfaceCounters(argv[2], &rx, &tx)) {
133            cli->sendMsg(ResponseCode::OperationFailed, "Failed to read counters", true);
134            return 0;
135        }
136
137        char *msg = NULL;
138        asprintf(&msg, "%lu", tx);
139        cli->sendMsg(ResponseCode::InterfaceTxCounterResult, msg, false);
140        free(msg);
141        return 0;
142    } else if (!strcmp(argv[1], "getthrottle")) {
143        if (argc != 4 || (argc == 4 && (strcmp(argv[3], "rx") && (strcmp(argv[3], "tx"))))) {
144            cli->sendMsg(ResponseCode::CommandSyntaxError,
145                    "Usage: interface getthrottle <interface> <rx|tx>", false);
146            return 0;
147        }
148        int val = 0;
149        int rc = 0;
150        int voldRc = ResponseCode::InterfaceRxThrottleResult;
151
152        if (!strcmp(argv[3], "rx")) {
153            rc = ThrottleController::getInterfaceRxThrottle(argv[2], &val);
154        } else {
155            rc = ThrottleController::getInterfaceTxThrottle(argv[2], &val);
156            voldRc = ResponseCode::InterfaceTxThrottleResult;
157        }
158        if (rc) {
159            cli->sendMsg(ResponseCode::OperationFailed, "Failed to get throttle", true);
160        } else {
161            char *msg = NULL;
162            asprintf(&msg, "%u", val);
163            cli->sendMsg(voldRc, msg, false);
164            free(msg);
165            return 0;
166        }
167        return 0;
168    } else if (!strcmp(argv[1], "setthrottle")) {
169        if (argc != 5) {
170            cli->sendMsg(ResponseCode::CommandSyntaxError,
171                    "Usage: interface setthrottle <interface> <rx_kbps> <tx_kbps>", false);
172            return 0;
173        }
174        if (ThrottleController::setInterfaceThrottle(argv[2], atoi(argv[3]), atoi(argv[4]))) {
175            cli->sendMsg(ResponseCode::OperationFailed, "Failed to set throttle", true);
176        } else {
177            cli->sendMsg(ResponseCode::CommandOkay, "Interface throttling set", false);
178        }
179        return 0;
180    } else {
181        /*
182         * These commands take a minimum of 3 arguments
183         */
184        if (argc < 3) {
185            cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
186            return 0;
187        }
188        if (!strcmp(argv[1], "getcfg")) {
189            struct in_addr addr;
190            int prefixLength;
191            unsigned char hwaddr[6];
192            unsigned flags = 0;
193
194            ifc_init();
195            memset(hwaddr, 0, sizeof(hwaddr));
196
197            if (ifc_get_info(argv[2], &addr.s_addr, &prefixLength, &flags)) {
198                cli->sendMsg(ResponseCode::OperationFailed, "Interface not found", true);
199                return 0;
200            }
201
202            if (ifc_get_hwaddr(argv[2], (void *) hwaddr)) {
203                LOGW("Failed to retrieve HW addr for %s (%s)", argv[2], strerror(errno));
204            }
205
206            char *addr_s = strdup(inet_ntoa(addr));
207            const char *updown, *brdcst, *loopbk, *ppp, *running, *multi;
208
209            updown =  (flags & IFF_UP)           ? "up" : "down";
210            brdcst =  (flags & IFF_BROADCAST)    ? " broadcast" : "";
211            loopbk =  (flags & IFF_LOOPBACK)     ? " loopback" : "";
212            ppp =     (flags & IFF_POINTOPOINT)  ? " point-to-point" : "";
213            running = (flags & IFF_RUNNING)      ? " running" : "";
214            multi =   (flags & IFF_MULTICAST)    ? " multicast" : "";
215
216            char *flag_s;
217
218            asprintf(&flag_s, "[%s%s%s%s%s%s]", updown, brdcst, loopbk, ppp, running, multi);
219
220            char *msg = NULL;
221            asprintf(&msg, "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x %s %d %s",
222                     hwaddr[0], hwaddr[1], hwaddr[2], hwaddr[3], hwaddr[4], hwaddr[5],
223                     addr_s, prefixLength, flag_s);
224
225            cli->sendMsg(ResponseCode::InterfaceGetCfgResult, msg, false);
226
227            free(addr_s);
228            free(flag_s);
229            free(msg);
230            return 0;
231        } else if (!strcmp(argv[1], "setcfg")) {
232            // arglist: iface addr prefixLength [flags]
233            if (argc < 5) {
234                cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
235                return 0;
236            }
237            LOGD("Setting iface cfg");
238
239            struct in_addr addr;
240            unsigned flags = 0;
241
242            if (!inet_aton(argv[3], &addr)) {
243                cli->sendMsg(ResponseCode::CommandParameterError, "Invalid address", false);
244                return 0;
245            }
246
247            ifc_init();
248            if (ifc_set_addr(argv[2], addr.s_addr)) {
249                cli->sendMsg(ResponseCode::OperationFailed, "Failed to set address", true);
250                return 0;
251            }
252
253            if (ifc_set_prefixLength(argv[2], atoi(argv[4]))) {
254                cli->sendMsg(ResponseCode::OperationFailed, "Failed to set prefixLength", true);
255                return 0;
256            }
257
258            /* Process flags */
259            /* read from "[XX" arg to "YY]" arg */
260            bool bStarted = false;
261            for (int i = 5; i < argc; i++) {
262                char *flag = argv[i];
263                if (!bStarted) {
264                    if (*flag == '[') {
265                        flag++;
266                        bStarted = true;
267                    } else {
268                        continue;
269                    }
270                }
271                int len = strlen(flag);
272                if (flag[len-1] == ']') {
273                    i = argc;  // stop after this loop
274                    flag[len-1] = 0;
275                }
276                if (!strcmp(flag, "up")) {
277                    LOGD("Trying to bring up %s", argv[2]);
278                    if (ifc_up(argv[2])) {
279                        LOGE("Error upping interface");
280                        cli->sendMsg(ResponseCode::OperationFailed, "Failed to up interface", true);
281                        return 0;
282                    }
283                } else if (!strcmp(flag, "down")) {
284                    LOGD("Trying to bring down %s", argv[2]);
285                    if (ifc_down(argv[2])) {
286                        LOGE("Error downing interface");
287                        cli->sendMsg(ResponseCode::OperationFailed, "Failed to down interface", true);
288                        return 0;
289                    }
290                } else if (!strcmp(flag, "broadcast")) {
291                    LOGD("broadcast flag ignored");
292                } else if (!strcmp(flag, "multicast")) {
293                    LOGD("multicast flag ignored");
294                } else {
295                    cli->sendMsg(ResponseCode::CommandParameterError, "Flag unsupported", false);
296                    return 0;
297                }
298            }
299            cli->sendMsg(ResponseCode::CommandOkay, "Interface configuration set", false);
300            return 0;
301        } else {
302            cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown interface cmd", false);
303            return 0;
304        }
305    }
306    return 0;
307}
308
309CommandListener::ListTtysCmd::ListTtysCmd() :
310                 NetdCommand("list_ttys") {
311}
312
313int CommandListener::ListTtysCmd::runCommand(SocketClient *cli,
314                                             int argc, char **argv) {
315    TtyCollection *tlist = sPppCtrl->getTtyList();
316    TtyCollection::iterator it;
317
318    for (it = tlist->begin(); it != tlist->end(); ++it) {
319        cli->sendMsg(ResponseCode::TtyListResult, *it, false);
320    }
321
322    cli->sendMsg(ResponseCode::CommandOkay, "Ttys listed.", false);
323    return 0;
324}
325
326CommandListener::IpFwdCmd::IpFwdCmd() :
327                 NetdCommand("ipfwd") {
328}
329
330int CommandListener::IpFwdCmd::runCommand(SocketClient *cli,
331                                                      int argc, char **argv) {
332    int rc = 0;
333
334    if (argc < 2) {
335        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
336        return 0;
337    }
338
339    if (!strcmp(argv[1], "status")) {
340        char *tmp = NULL;
341
342        asprintf(&tmp, "Forwarding %s", (sTetherCtrl->getIpFwdEnabled() ? "enabled" : "disabled"));
343        cli->sendMsg(ResponseCode::IpFwdStatusResult, tmp, false);
344        free(tmp);
345        return 0;
346    } else if (!strcmp(argv[1], "enable")) {
347        rc = sTetherCtrl->setIpFwdEnabled(true);
348    } else if (!strcmp(argv[1], "disable")) {
349        rc = sTetherCtrl->setIpFwdEnabled(false);
350    } else {
351        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown ipfwd cmd", false);
352        return 0;
353    }
354
355    if (!rc) {
356        cli->sendMsg(ResponseCode::CommandOkay, "ipfwd operation succeeded", false);
357    } else {
358        cli->sendMsg(ResponseCode::OperationFailed, "ipfwd operation failed", true);
359    }
360
361    return 0;
362}
363
364CommandListener::TetherCmd::TetherCmd() :
365                 NetdCommand("tether") {
366}
367
368int CommandListener::TetherCmd::runCommand(SocketClient *cli,
369                                                      int argc, char **argv) {
370    int rc = 0;
371
372    if (argc < 2) {
373        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
374        return 0;
375    }
376
377    if (!strcmp(argv[1], "stop")) {
378        rc = sTetherCtrl->stopTethering();
379    } else if (!strcmp(argv[1], "status")) {
380        char *tmp = NULL;
381
382        asprintf(&tmp, "Tethering services %s",
383                 (sTetherCtrl->isTetheringStarted() ? "started" : "stopped"));
384        cli->sendMsg(ResponseCode::TetherStatusResult, tmp, false);
385        free(tmp);
386        return 0;
387    } else {
388        /*
389         * These commands take a minimum of 4 arguments
390         */
391        if (argc < 4) {
392            cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
393            return 0;
394        }
395
396        if (!strcmp(argv[1], "start")) {
397            if (argc % 2 == 1) {
398                cli->sendMsg(ResponseCode::CommandSyntaxError, "Bad number of arguments", false);
399                return 0;
400            }
401
402            int num_addrs = argc - 2;
403            int arg_index = 2;
404            int array_index = 0;
405            in_addr *addrs = (in_addr *)malloc(sizeof(in_addr) * num_addrs);
406            while (array_index < num_addrs) {
407                if (!inet_aton(argv[arg_index++], &(addrs[array_index++]))) {
408                    cli->sendMsg(ResponseCode::CommandParameterError, "Invalid address", false);
409                    free(addrs);
410                    return 0;
411                }
412            }
413            rc = sTetherCtrl->startTethering(num_addrs, addrs);
414            free(addrs);
415        } else if (!strcmp(argv[1], "interface")) {
416            if (!strcmp(argv[2], "add")) {
417                rc = sTetherCtrl->tetherInterface(argv[3]);
418            } else if (!strcmp(argv[2], "remove")) {
419                rc = sTetherCtrl->untetherInterface(argv[3]);
420            } else if (!strcmp(argv[2], "list")) {
421                InterfaceCollection *ilist = sTetherCtrl->getTetheredInterfaceList();
422                InterfaceCollection::iterator it;
423
424                for (it = ilist->begin(); it != ilist->end(); ++it) {
425                    cli->sendMsg(ResponseCode::TetherInterfaceListResult, *it, false);
426                }
427            } else {
428                cli->sendMsg(ResponseCode::CommandParameterError,
429                             "Unknown tether interface operation", false);
430                return 0;
431            }
432        } else if (!strcmp(argv[1], "dns")) {
433            if (!strcmp(argv[2], "set")) {
434                rc = sTetherCtrl->setDnsForwarders(&argv[3], argc - 3);
435            } else if (!strcmp(argv[2], "list")) {
436                NetAddressCollection *dlist = sTetherCtrl->getDnsForwarders();
437                NetAddressCollection::iterator it;
438
439                for (it = dlist->begin(); it != dlist->end(); ++it) {
440                    cli->sendMsg(ResponseCode::TetherDnsFwdTgtListResult, inet_ntoa(*it), false);
441                }
442            } else {
443                cli->sendMsg(ResponseCode::CommandParameterError,
444                             "Unknown tether interface operation", false);
445                return 0;
446            }
447        } else {
448            cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown tether cmd", false);
449            return 0;
450        }
451    }
452
453    if (!rc) {
454        cli->sendMsg(ResponseCode::CommandOkay, "Tether operation succeeded", false);
455    } else {
456        cli->sendMsg(ResponseCode::OperationFailed, "Tether operation failed", true);
457    }
458
459    return 0;
460}
461
462CommandListener::NatCmd::NatCmd() :
463                 NetdCommand("nat") {
464}
465
466int CommandListener::NatCmd::runCommand(SocketClient *cli,
467                                                      int argc, char **argv) {
468    int rc = 0;
469
470    if (argc < 3) {
471        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
472        return 0;
473    }
474
475    if (!strcmp(argv[1], "enable")) {
476        rc = sNatCtrl->enableNat(argv[2], argv[3]);
477    } else if (!strcmp(argv[1], "disable")) {
478        rc = sNatCtrl->disableNat(argv[2], argv[3]);
479    } else {
480        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown nat cmd", false);
481        return 0;
482    }
483
484    if (!rc) {
485        cli->sendMsg(ResponseCode::CommandOkay, "Nat operation succeeded", false);
486    } else {
487        cli->sendMsg(ResponseCode::OperationFailed, "Nat operation failed", true);
488    }
489
490    return 0;
491}
492
493CommandListener::PppdCmd::PppdCmd() :
494                 NetdCommand("pppd") {
495}
496
497int CommandListener::PppdCmd::runCommand(SocketClient *cli,
498                                                      int argc, char **argv) {
499    int rc = 0;
500
501    if (argc < 3) {
502        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
503        return 0;
504    }
505
506    if (!strcmp(argv[1], "attach")) {
507        struct in_addr l, r, dns1, dns2;
508
509        memset(&dns1, sizeof(struct in_addr), 0);
510        memset(&dns2, sizeof(struct in_addr), 0);
511
512        if (!inet_aton(argv[3], &l)) {
513            cli->sendMsg(ResponseCode::CommandParameterError, "Invalid local address", false);
514            return 0;
515        }
516        if (!inet_aton(argv[4], &r)) {
517            cli->sendMsg(ResponseCode::CommandParameterError, "Invalid remote address", false);
518            return 0;
519        }
520        if ((argc > 3) && (!inet_aton(argv[5], &dns1))) {
521            cli->sendMsg(ResponseCode::CommandParameterError, "Invalid dns1 address", false);
522            return 0;
523        }
524        if ((argc > 4) && (!inet_aton(argv[6], &dns2))) {
525            cli->sendMsg(ResponseCode::CommandParameterError, "Invalid dns2 address", false);
526            return 0;
527        }
528        rc = sPppCtrl->attachPppd(argv[2], l, r, dns1, dns2);
529    } else if (!strcmp(argv[1], "detach")) {
530        rc = sPppCtrl->detachPppd(argv[2]);
531    } else {
532        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown pppd cmd", false);
533        return 0;
534    }
535
536    if (!rc) {
537        cli->sendMsg(ResponseCode::CommandOkay, "Pppd operation succeeded", false);
538    } else {
539        cli->sendMsg(ResponseCode::OperationFailed, "Pppd operation failed", true);
540    }
541
542    return 0;
543}
544
545CommandListener::PanCmd::PanCmd() :
546                 NetdCommand("pan") {
547}
548
549int CommandListener::PanCmd::runCommand(SocketClient *cli,
550                                        int argc, char **argv) {
551    int rc = 0;
552
553    if (argc < 2) {
554        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
555        return 0;
556    }
557
558    if (!strcmp(argv[1], "start")) {
559        rc = sPanCtrl->startPan();
560    } else if (!strcmp(argv[1], "stop")) {
561        rc = sPanCtrl->stopPan();
562    } else if (!strcmp(argv[1], "status")) {
563        char *tmp = NULL;
564
565        asprintf(&tmp, "Pan services %s",
566                 (sPanCtrl->isPanStarted() ? "started" : "stopped"));
567        cli->sendMsg(ResponseCode::PanStatusResult, tmp, false);
568        free(tmp);
569        return 0;
570    } else {
571        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown pan cmd", false);
572        return 0;
573    }
574
575    if (!rc) {
576        cli->sendMsg(ResponseCode::CommandOkay, "Pan operation succeeded", false);
577    } else {
578        cli->sendMsg(ResponseCode::OperationFailed, "Pan operation failed", true);
579    }
580
581    return 0;
582}
583
584CommandListener::SoftapCmd::SoftapCmd() :
585                 NetdCommand("softap") {
586}
587
588int CommandListener::SoftapCmd::runCommand(SocketClient *cli,
589                                        int argc, char **argv) {
590    int rc = 0, flag = 0;
591
592    if (argc < 2) {
593        cli->sendMsg(ResponseCode::CommandSyntaxError, "Softap Missing argument", false);
594        return 0;
595    }
596
597    if (!strcmp(argv[1], "start")) {
598        rc = sSoftapCtrl->startDriver(argv[2]);
599    } else if (!strcmp(argv[1], "stop")) {
600        rc = sSoftapCtrl->stopDriver(argv[2]);
601    } else if (!strcmp(argv[1], "startap")) {
602        rc = sSoftapCtrl->startSoftap();
603    } else if (!strcmp(argv[1], "stopap")) {
604        rc = sSoftapCtrl->stopSoftap();
605    } else if (!strcmp(argv[1], "fwreload")) {
606        rc = sSoftapCtrl->fwReloadSoftap(argc, argv);
607    } else if (!strcmp(argv[1], "status")) {
608        char *tmp = NULL;
609
610        asprintf(&tmp, "Softap service %s",
611                 (sSoftapCtrl->isSoftapStarted() ? "started" : "stopped"));
612        cli->sendMsg(ResponseCode::SoftapStatusResult, tmp, false);
613        free(tmp);
614        return 0;
615    } else if (!strcmp(argv[1], "set")) {
616        rc = sSoftapCtrl->setSoftap(argc, argv);
617    } else {
618        cli->sendMsg(ResponseCode::CommandSyntaxError, "Softap Unknown cmd", false);
619        return 0;
620    }
621
622    if (!rc) {
623        cli->sendMsg(ResponseCode::CommandOkay, "Softap operation succeeded", false);
624    } else {
625        cli->sendMsg(ResponseCode::OperationFailed, "Softap operation failed", true);
626    }
627
628    return 0;
629}
630
631CommandListener::UsbCmd::UsbCmd() :
632                 NetdCommand("usb") {
633}
634
635int CommandListener::UsbCmd::runCommand(SocketClient *cli, int argc, char **argv) {
636    int rc = 0;
637
638    if (argc < 2) {
639        cli->sendMsg(ResponseCode::CommandSyntaxError, "Usb Missing argument", false);
640        return 0;
641    }
642
643    if (!strcmp(argv[1], "startrndis")) {
644        rc = sUsbCtrl->startRNDIS();
645    } else if (!strcmp(argv[1], "stoprndis")) {
646        rc = sUsbCtrl->stopRNDIS();
647    } else if (!strcmp(argv[1], "rndisstatus")) {
648        char *tmp = NULL;
649
650        asprintf(&tmp, "Usb RNDIS %s",
651                (sUsbCtrl->isRNDISStarted() ? "started" : "stopped"));
652        cli->sendMsg(ResponseCode::UsbRNDISStatusResult, tmp, false);
653        free(tmp);
654        return 0;
655    } else {
656        cli->sendMsg(ResponseCode::CommandSyntaxError, "Usb Unknown cmd", false);
657        return 0;
658    }
659
660    if (!rc) {
661        cli->sendMsg(ResponseCode::CommandOkay, "Usb operation succeeded", false);
662    } else {
663        cli->sendMsg(ResponseCode::OperationFailed, "Softap operation failed", true);
664    }
665
666    return 0;
667}
668
669int CommandListener::readInterfaceCounters(const char *iface, unsigned long *rx, unsigned long *tx) {
670    FILE *fp = fopen("/proc/net/dev", "r");
671    if (!fp) {
672        LOGE("Failed to open /proc/net/dev (%s)", strerror(errno));
673        return -1;
674    }
675
676    char buffer[512];
677
678    fgets(buffer, sizeof(buffer), fp); // Header 1
679    fgets(buffer, sizeof(buffer), fp); // Header 2
680    while(fgets(buffer, sizeof(buffer), fp)) {
681        buffer[strlen(buffer)-1] = '\0';
682
683        char name[31];
684        unsigned long d;
685        sscanf(buffer, "%30s %lu %lu %lu %lu %lu %lu %lu %lu %lu",
686                name, rx, &d, &d, &d, &d, &d, &d, &d, tx);
687        char *rxString = strchr(name, ':');
688        *rxString = '\0';
689        rxString++;
690        // when the rx count gets too big it changes from "name: 999" to "name:1000"
691        // and the sscanf munge the two together.  Detect that and fix
692        // note that all the %lu will be off by one and the real tx value will be in d
693        if (*rxString != '\0') {
694            *tx = d;
695            sscanf(rxString, "%20lu", rx);
696        }
697        if (strcmp(name, iface)) {
698            continue;
699        }
700        fclose(fp);
701        return 0;
702    }
703
704    fclose(fp);
705    *rx = 0;
706    *tx = 0;
707    return 0;
708}
709