CommandListener.cpp revision 5af38c360587ca2eef0badf6137ccf018f8cd4aa 
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
25#include <linux/if.h>
26
27#define LOG_TAG "CommandListener"
28#include <cutils/log.h>
29
30#include <sysutils/SocketClient.h>
31
32#include "CommandListener.h"
33#include "ResponseCode.h"
34
35extern "C" int ifc_init(void);
36extern "C" int ifc_get_hwaddr(const char *name, void *ptr);
37extern "C" int ifc_get_info(const char *name, in_addr_t *addr, in_addr_t *mask, unsigned *flags);
38extern "C" int ifc_set_addr(const char *name, in_addr_t addr);
39extern "C" int ifc_set_mask(const char *name, in_addr_t mask);
40extern "C" int ifc_up(const char *name);
41extern "C" int ifc_down(const char *name);
42
43TetherController *CommandListener::sTetherCtrl = NULL;
44NatController *CommandListener::sNatCtrl = NULL;
45PppController *CommandListener::sPppCtrl = NULL;
46PanController *CommandListener::sPanCtrl = NULL;
47SoftapController *CommandListener::sSoftapCtrl = NULL;
48
49CommandListener::CommandListener() :
50                 FrameworkListener("netd") {
51    registerCmd(new InterfaceCmd());
52    registerCmd(new IpFwdCmd());
53    registerCmd(new TetherCmd());
54    registerCmd(new NatCmd());
55    registerCmd(new ListTtysCmd());
56    registerCmd(new PppdCmd());
57    registerCmd(new PanCmd());
58    registerCmd(new SoftapCmd());
59
60    if (!sTetherCtrl)
61        sTetherCtrl = new TetherController();
62    if (!sNatCtrl)
63        sNatCtrl = new NatController();
64    if (!sPppCtrl)
65        sPppCtrl = new PppController();
66    if (!sPanCtrl)
67        sPanCtrl = new PanController();
68    if (!sSoftapCtrl)
69        sSoftapCtrl = new SoftapController();
70}
71
72CommandListener::InterfaceCmd::InterfaceCmd() :
73                 NetdCommand("interface") {
74}
75
76int CommandListener::InterfaceCmd::runCommand(SocketClient *cli,
77                                                      int argc, char **argv) {
78    if (argc < 2) {
79        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
80        return 0;
81    }
82
83    if (!strcmp(argv[1], "list")) {
84        DIR *d;
85        struct dirent *de;
86
87        if (!(d = opendir("/sys/class/net"))) {
88            cli->sendMsg(ResponseCode::OperationFailed, "Failed to open sysfs dir", true);
89            return 0;
90        }
91
92        while((de = readdir(d))) {
93            if (de->d_name[0] == '.')
94                continue;
95            cli->sendMsg(ResponseCode::InterfaceListResult, de->d_name, false);
96        }
97        closedir(d);
98        cli->sendMsg(ResponseCode::CommandOkay, "Interface list completed", false);
99        return 0;
100    } else {
101        /*
102         * These commands take a minimum of 3 arguments
103         */
104        if (argc < 3) {
105            cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
106            return 0;
107        }
108        if (!strcmp(argv[1], "getcfg")) {
109            struct in_addr addr, mask;
110            unsigned char hwaddr[6];
111            unsigned flags = 0;
112
113            ifc_init();
114            memset(hwaddr, 0, sizeof(hwaddr));
115
116            if (ifc_get_info(argv[2], &addr.s_addr, &mask.s_addr, &flags)) {
117                cli->sendMsg(ResponseCode::OperationFailed, "Interface not found", true);
118                return 0;
119            }
120
121            if (ifc_get_hwaddr(argv[2], (void *) hwaddr)) {
122                LOGW("Failed to retrieve HW addr for %s (%s)", argv[2], strerror(errno));
123            }
124
125            char *addr_s = strdup(inet_ntoa(addr));
126            char *mask_s = strdup(inet_ntoa(mask));
127            const char *updown, *brdcst, *loopbk, *ppp, *running, *multi;
128
129            updown =  (flags & IFF_UP)           ? "up" : "down";
130            brdcst =  (flags & IFF_BROADCAST)    ? " broadcast" : "";
131            loopbk =  (flags & IFF_LOOPBACK)     ? " loopback" : "";
132            ppp =     (flags & IFF_POINTOPOINT)  ? " point-to-point" : "";
133            running = (flags & IFF_RUNNING)      ? " running" : "";
134            multi =   (flags & IFF_MULTICAST)    ? " multicast" : "";
135
136            char *flag_s;
137
138            asprintf(&flag_s, "[%s%s%s%s%s%s]\n", updown, brdcst, loopbk, ppp, running, multi);
139
140            char *msg = NULL;
141            asprintf(&msg, "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x %s %s %s",
142                     hwaddr[0], hwaddr[1], hwaddr[2], hwaddr[3], hwaddr[4], hwaddr[5],
143                     addr_s, mask_s, flag_s);
144
145            cli->sendMsg(ResponseCode::InterfaceGetCfgResult, msg, false);
146
147            free(addr_s);
148            free(mask_s);
149            free(flag_s);
150            free(msg);
151            return 0;
152        } else if (!strcmp(argv[1], "setcfg")) {
153            if (argc < 5) {
154                cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
155                return 0;
156            }
157
158            struct in_addr addr, mask;
159            unsigned flags = 0;
160
161            if (!inet_aton(argv[3], &addr)) {
162                cli->sendMsg(ResponseCode::CommandParameterError, "Invalid address", false);
163                return 0;
164            }
165
166            if (!inet_aton(argv[4], &mask)) {
167                cli->sendMsg(ResponseCode::CommandParameterError, "Invalid netmask", false);
168                return 0;
169            }
170
171            ifc_init();
172            if (ifc_set_addr(argv[2], addr.s_addr)) {
173                cli->sendMsg(ResponseCode::OperationFailed, "Failed to set address", true);
174                return 0;
175            }
176
177            if (ifc_set_mask(argv[2], mask.s_addr)) {
178                cli->sendMsg(ResponseCode::OperationFailed, "Failed to set netmask", true);
179                return 0;
180            }
181
182            /* Process flags */
183            for (int i = 5; i < argc; i++) {
184                if (!strcmp(argv[i], "up")) {
185                    if (ifc_up(argv[2])) {
186                        LOGE("Error upping interface");
187                        cli->sendMsg(ResponseCode::OperationFailed, "Failed to up interface", true);
188                        return 0;
189                    }
190                } else if (!strcmp(argv[i], "down")) {
191                    if (ifc_down(argv[2])) {
192                        LOGE("Error downing interface");
193                        cli->sendMsg(ResponseCode::OperationFailed, "Failed to down interface", true);
194                        return 0;
195                    }
196                } else {
197                    cli->sendMsg(ResponseCode::CommandParameterError, "Flag unsupported", false);
198                    return 0;
199                }
200            }
201            cli->sendMsg(ResponseCode::CommandOkay, "Interface configuration set", false);
202            return 0;
203        } else {
204            cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown interface cmd", false);
205            return 0;
206        }
207    }
208    return 0;
209}
210
211CommandListener::ListTtysCmd::ListTtysCmd() :
212                 NetdCommand("list_ttys") {
213}
214
215int CommandListener::ListTtysCmd::runCommand(SocketClient *cli,
216                                             int argc, char **argv) {
217    TtyCollection *tlist = sPppCtrl->getTtyList();
218    TtyCollection::iterator it;
219
220    for (it = tlist->begin(); it != tlist->end(); ++it) {
221        cli->sendMsg(ResponseCode::TtyListResult, *it, false);
222    }
223
224    cli->sendMsg(ResponseCode::CommandOkay, "Ttys listed.", false);
225    return 0;
226}
227
228CommandListener::IpFwdCmd::IpFwdCmd() :
229                 NetdCommand("ipfwd") {
230}
231
232int CommandListener::IpFwdCmd::runCommand(SocketClient *cli,
233                                                      int argc, char **argv) {
234    int rc = 0;
235
236    if (argc < 2) {
237        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
238        return 0;
239    }
240
241    if (!strcmp(argv[1], "status")) {
242        char *tmp = NULL;
243
244        asprintf(&tmp, "Forwarding %s", (sTetherCtrl->getIpFwdEnabled() ? "enabled" : "disabled"));
245        cli->sendMsg(ResponseCode::IpFwdStatusResult, tmp, false);
246        free(tmp);
247        return 0;
248    } else if (!strcmp(argv[1], "enable")) {
249        rc = sTetherCtrl->setIpFwdEnabled(true);
250    } else if (!strcmp(argv[1], "disable")) {
251        rc = sTetherCtrl->setIpFwdEnabled(false);
252    } else {
253        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown ipfwd cmd", false);
254        return 0;
255    }
256
257    if (!rc) {
258        cli->sendMsg(ResponseCode::CommandOkay, "ipfwd operation succeeded", false);
259    } else {
260        cli->sendMsg(ResponseCode::OperationFailed, "ipfwd operation failed", true);
261    }
262
263    return 0;
264}
265
266CommandListener::TetherCmd::TetherCmd() :
267                 NetdCommand("tether") {
268}
269
270int CommandListener::TetherCmd::runCommand(SocketClient *cli,
271                                                      int argc, char **argv) {
272    int rc = 0;
273
274    if (argc < 2) {
275        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
276        return 0;
277    }
278
279    if (!strcmp(argv[1], "stop")) {
280        rc = sTetherCtrl->stopTethering();
281    } else if (!strcmp(argv[1], "status")) {
282        char *tmp = NULL;
283
284        asprintf(&tmp, "Tethering services %s",
285                 (sTetherCtrl->isTetheringStarted() ? "started" : "stopped"));
286        cli->sendMsg(ResponseCode::TetherStatusResult, tmp, false);
287        free(tmp);
288        return 0;
289    } else {
290        /*
291         * These commands take a minimum of 4 arguments
292         */
293        if (argc < 4) {
294            cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
295            return 0;
296        }
297
298        if (!strcmp(argv[1], "start")) {
299            struct in_addr s, e;
300
301            if (!inet_aton(argv[2], &s)) {
302                cli->sendMsg(ResponseCode::CommandParameterError, "Invalid start address", false);
303                return 0;
304            }
305            if (!inet_aton(argv[3], &e)) {
306                cli->sendMsg(ResponseCode::CommandParameterError, "Invalid end address", false);
307                return 0;
308            }
309            rc = sTetherCtrl->startTethering(s, e);
310        } else if (!strcmp(argv[1], "interface")) {
311            if (!strcmp(argv[2], "add")) {
312                rc = sTetherCtrl->tetherInterface(argv[3]);
313            } else if (!strcmp(argv[2], "remove")) {
314                rc = sTetherCtrl->untetherInterface(argv[3]);
315            } else if (!strcmp(argv[2], "list")) {
316                InterfaceCollection *ilist = sTetherCtrl->getTetheredInterfaceList();
317                InterfaceCollection::iterator it;
318
319                for (it = ilist->begin(); it != ilist->end(); ++it) {
320                    cli->sendMsg(ResponseCode::TetherInterfaceListResult, *it, false);
321                }
322            } else {
323                cli->sendMsg(ResponseCode::CommandParameterError,
324                             "Unknown tether interface operation", false);
325                return 0;
326            }
327        } else if (!strcmp(argv[1], "dns")) {
328            if (!strcmp(argv[2], "set")) {
329                rc = sTetherCtrl->setDnsForwarders(&argv[3], argc - 3);
330            } else if (!strcmp(argv[2], "list")) {
331                NetAddressCollection *dlist = sTetherCtrl->getDnsForwarders();
332                NetAddressCollection::iterator it;
333
334                for (it = dlist->begin(); it != dlist->end(); ++it) {
335                    cli->sendMsg(ResponseCode::TetherDnsFwdTgtListResult, inet_ntoa(*it), false);
336                }
337            } else {
338                cli->sendMsg(ResponseCode::CommandParameterError,
339                             "Unknown tether interface operation", false);
340                return 0;
341            }
342        } else {
343            cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown tether cmd", false);
344            return 0;
345        }
346    }
347
348    if (!rc) {
349        cli->sendMsg(ResponseCode::CommandOkay, "Tether operation succeeded", false);
350    } else {
351        cli->sendMsg(ResponseCode::OperationFailed, "Tether operation failed", true);
352    }
353
354    return 0;
355}
356
357CommandListener::NatCmd::NatCmd() :
358                 NetdCommand("nat") {
359}
360
361int CommandListener::NatCmd::runCommand(SocketClient *cli,
362                                                      int argc, char **argv) {
363    int rc = 0;
364
365    if (argc < 3) {
366        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
367        return 0;
368    }
369
370    if (!strcmp(argv[1], "enable")) {
371        rc = sNatCtrl->enableNat(argv[2], argv[3]);
372    } else if (!strcmp(argv[1], "disable")) {
373        rc = sNatCtrl->disableNat(argv[2], argv[3]);
374    } else {
375        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown nat cmd", false);
376        return 0;
377    }
378
379    if (!rc) {
380        cli->sendMsg(ResponseCode::CommandOkay, "Nat operation succeeded", false);
381    } else {
382        cli->sendMsg(ResponseCode::OperationFailed, "Nat operation failed", true);
383    }
384
385    return 0;
386}
387
388CommandListener::PppdCmd::PppdCmd() :
389                 NetdCommand("pppd") {
390}
391
392int CommandListener::PppdCmd::runCommand(SocketClient *cli,
393                                                      int argc, char **argv) {
394    int rc = 0;
395
396    if (argc < 3) {
397        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
398        return 0;
399    }
400
401    if (!strcmp(argv[1], "attach")) {
402        struct in_addr l, r, dns1, dns2;
403
404        memset(&dns1, sizeof(struct in_addr), 0);
405        memset(&dns2, sizeof(struct in_addr), 0);
406
407        if (!inet_aton(argv[3], &l)) {
408            cli->sendMsg(ResponseCode::CommandParameterError, "Invalid local address", false);
409            return 0;
410        }
411        if (!inet_aton(argv[4], &r)) {
412            cli->sendMsg(ResponseCode::CommandParameterError, "Invalid remote address", false);
413            return 0;
414        }
415        if ((argc > 3) && (!inet_aton(argv[5], &dns1))) {
416            cli->sendMsg(ResponseCode::CommandParameterError, "Invalid dns1 address", false);
417            return 0;
418        }
419        if ((argc > 4) && (!inet_aton(argv[6], &dns2))) {
420            cli->sendMsg(ResponseCode::CommandParameterError, "Invalid dns2 address", false);
421            return 0;
422        }
423        rc = sPppCtrl->attachPppd(argv[2], l, r, dns1, dns2);
424    } else if (!strcmp(argv[1], "detach")) {
425        rc = sPppCtrl->detachPppd(argv[2]);
426    } else {
427        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown pppd cmd", false);
428        return 0;
429    }
430
431    if (!rc) {
432        cli->sendMsg(ResponseCode::CommandOkay, "Pppd operation succeeded", false);
433    } else {
434        cli->sendMsg(ResponseCode::OperationFailed, "Pppd operation failed", true);
435    }
436
437    return 0;
438}
439
440CommandListener::PanCmd::PanCmd() :
441                 NetdCommand("pan") {
442}
443
444int CommandListener::PanCmd::runCommand(SocketClient *cli,
445                                        int argc, char **argv) {
446    int rc = 0;
447
448    if (argc < 2) {
449        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing argument", false);
450        return 0;
451    }
452
453    if (!strcmp(argv[1], "start")) {
454        rc = sPanCtrl->startPan();
455    } else if (!strcmp(argv[1], "stop")) {
456        rc = sPanCtrl->stopPan();
457    } else if (!strcmp(argv[1], "status")) {
458        char *tmp = NULL;
459
460        asprintf(&tmp, "Pan services %s",
461                 (sPanCtrl->isPanStarted() ? "started" : "stopped"));
462        cli->sendMsg(ResponseCode::PanStatusResult, tmp, false);
463        free(tmp);
464        return 0;
465    } else {
466        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown pan cmd", false);
467        return 0;
468    }
469
470    if (!rc) {
471        cli->sendMsg(ResponseCode::CommandOkay, "Pan operation succeeded", false);
472    } else {
473        cli->sendMsg(ResponseCode::OperationFailed, "Pan operation failed", true);
474    }
475
476    return 0;
477}
478
479CommandListener::SoftapCmd::SoftapCmd() :
480                 NetdCommand("softap") {
481}
482
483int CommandListener::SoftapCmd::runCommand(SocketClient *cli,
484                                        int argc, char **argv) {
485    int rc = 0;
486
487    if (argc < 2) {
488        cli->sendMsg(ResponseCode::CommandSyntaxError, "Softap Missing argument", false);
489        return 0;
490    }
491
492    if (!strcmp(argv[1], "start")) {
493        rc = sSoftapCtrl->startSoftap();
494    } else if (!strcmp(argv[1], "stop")) {
495        rc = sSoftapCtrl->stopSoftap();
496    } else if (!strcmp(argv[1], "status")) {
497        char *tmp = NULL;
498
499        asprintf(&tmp, "Softap service %s",
500                 (sSoftapCtrl->isSoftapStarted() ? "started" : "stopped"));
501        cli->sendMsg(ResponseCode::SoftapStatusResult, tmp, false);
502        free(tmp);
503        return 0;
504    } else if (!strcmp(argv[1], "set")) {
505        rc = sSoftapCtrl->setSoftap(argc, argv);
506    } else {
507        cli->sendMsg(ResponseCode::CommandSyntaxError, "Softap Unknown cmd", false);
508        return 0;
509    }
510
511    if (!rc) {
512        cli->sendMsg(ResponseCode::CommandOkay, "Softap operation succeeded", false);
513    } else {
514        cli->sendMsg(ResponseCode::OperationFailed, "Softap operation failed", true);
515    }
516
517    return 0;
518}
519