CommandListener.cpp revision 586536c60b773e3517531ad8a6cb0de6722c67fc 
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#define LOG_TAG "CommandListener"
26#include <cutils/log.h>
27
28#include <sysutils/SocketClient.h>
29
30#include "CommandListener.h"
31#include "VolumeManager.h"
32#include "ResponseCode.h"
33#include "Process.h"
34
35CommandListener::CommandListener() :
36                 FrameworkListener("vold") {
37    registerCmd(new VolumeCmd());
38    registerCmd(new AsecCmd());
39    registerCmd(new ShareCmd());
40    registerCmd(new StorageCmd());
41}
42
43CommandListener::VolumeCmd::VolumeCmd() :
44                 VoldCommand("volume") {
45}
46
47int CommandListener::VolumeCmd::runCommand(SocketClient *cli,
48                                                      int argc, char **argv) {
49    if (argc < 2) {
50        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false);
51        return 0;
52    }
53
54    VolumeManager *vm = VolumeManager::Instance();
55    int rc = 0;
56
57    if (!strcmp(argv[1], "list")) {
58        return vm->listVolumes(cli);
59    } else if (!strcmp(argv[1], "mount")) {
60        rc = vm->mountVolume(argv[2]);
61    } else if (!strcmp(argv[1], "unmount")) {
62        rc = vm->unmountVolume(argv[2]);
63    } else if (!strcmp(argv[1], "format")) {
64        rc = vm->formatVolume(argv[2]);
65    } else if (!strcmp(argv[1], "share")) {
66        rc = vm->shareVolume(argv[2], argv[3]);
67    } else if (!strcmp(argv[1], "unshare")) {
68        rc = vm->unshareVolume(argv[2], argv[3]);
69    } else if (!strcmp(argv[1], "shared")) {
70        bool enabled = false;
71
72        if (vm->shareEnabled(argv[2], argv[3], &enabled)) {
73            cli->sendMsg(
74                    ResponseCode::OperationFailed, "Failed to determine share enable state", true);
75        } else {
76            cli->sendMsg(ResponseCode::ShareEnabledResult,
77                    (enabled ? "Share enabled" : "Share disabled"), false);
78        }
79        return 0;
80    } else {
81        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown volume cmd", false);
82    }
83
84    if (!rc) {
85        cli->sendMsg(ResponseCode::CommandOkay, "volume operation succeeded", false);
86    } else {
87        /*
88         * Failed
89         */
90        if (errno == ENODEV) {
91            rc = ResponseCode::OpFailedNoMedia;
92        } else if (errno == ENODATA) {
93            rc = ResponseCode::OpFailedMediaBlank;
94        } else if (errno == EIO) {
95            rc = ResponseCode::OpFailedMediaCorrupt;
96        } else if (errno == EBUSY) {
97            rc = ResponseCode::OpFailedVolBusy;
98        } else {
99            LOGW("Returning OperationFailed - no handler for errno %d", errno);
100            rc = ResponseCode::OperationFailed;
101        }
102        cli->sendMsg(rc, "volume operation failed", true);
103    }
104
105    return 0;
106}
107
108CommandListener::ShareCmd::ShareCmd() :
109                 VoldCommand("share") {
110}
111
112int CommandListener::ShareCmd::runCommand(SocketClient *cli,
113                                                      int argc, char **argv) {
114    if (argc < 2) {
115        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false);
116        return 0;
117    }
118
119    VolumeManager *vm = VolumeManager::Instance();
120    int rc = 0;
121
122    if (!strcmp(argv[1], "status")) {
123        bool avail = false;
124
125        if (vm->shareAvailable(argv[2], &avail)) {
126            cli->sendMsg(
127                    ResponseCode::OperationFailed, "Failed to determine share availability", true);
128        } else {
129            cli->sendMsg(ResponseCode::ShareStatusResult,
130                    (avail ? "Share available" : "Share unavailable"), false);
131        }
132    } else {
133        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown share cmd", false);
134    }
135
136    return 0;
137}
138
139CommandListener::StorageCmd::StorageCmd() :
140                 VoldCommand("storage") {
141}
142
143int CommandListener::StorageCmd::runCommand(SocketClient *cli,
144                                                      int argc, char **argv) {
145    if (argc < 2) {
146        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false);
147        return 0;
148    }
149
150    if (!strcmp(argv[1], "users")) {
151        DIR *dir;
152        struct dirent *de;
153
154        if (!(dir = opendir("/proc"))) {
155            cli->sendMsg(ResponseCode::OperationFailed, "Failed to open /proc", true);
156            return 0;
157        }
158
159        while ((de = readdir(dir))) {
160            int pid = Process::getPid(de->d_name);
161
162            if (pid < 0) {
163                continue;
164            }
165
166            char processName[255];
167            Process::getProcessName(pid, processName, sizeof(processName));
168
169            if (Process::checkFileDescriptorSymLinks(pid, argv[2]) ||
170                Process::checkFileMaps(pid, argv[2]) ||
171                Process::checkSymLink(pid, argv[2], "cwd") ||
172                Process::checkSymLink(pid, argv[2], "root") ||
173                Process::checkSymLink(pid, argv[2], "exe")) {
174
175                char msg[1024];
176                snprintf(msg, sizeof(msg), "%d %s", pid, processName);
177                cli->sendMsg(ResponseCode::StorageUsersListResult, msg, false);
178            }
179        }
180        closedir(dir);
181        cli->sendMsg(ResponseCode::CommandOkay, "Storage user list complete", false);
182    } else {
183        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown storage cmd", false);
184    }
185    return 0;
186}
187
188CommandListener::AsecCmd::AsecCmd() :
189                 VoldCommand("asec") {
190}
191
192int CommandListener::AsecCmd::runCommand(SocketClient *cli,
193                                                      int argc, char **argv) {
194    if (argc < 2) {
195        cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false);
196        return 0;
197    }
198
199    VolumeManager *vm = VolumeManager::Instance();
200    int rc = 0;
201
202    if (!strcmp(argv[1], "list")) {
203        DIR *d = opendir("/sdcard/android_secure");
204
205        if (!d) {
206            cli->sendMsg(ResponseCode::OperationFailed, "Failed to open asec dir", true);
207            return 0;
208        }
209
210        struct dirent *dent;
211        while ((dent = readdir(d))) {
212            if (dent->d_name[0] == '.')
213                continue;
214            if (!strcmp(&dent->d_name[strlen(dent->d_name)-5], ".asec")) {
215                char id[255];
216                memset(id, 0, sizeof(id));
217                strncpy(id, dent->d_name, strlen(dent->d_name) -5);
218                cli->sendMsg(ResponseCode::AsecListResult, id, false);
219            }
220        }
221        closedir(d);
222        cli->sendMsg(ResponseCode::CommandOkay, "ASEC listing complete", false);
223    } else if (!strcmp(argv[1], "create")) {
224        if (argc != 7) {
225            cli->sendMsg(ResponseCode::CommandSyntaxError,
226                    "Usage: asec create <container-id> <size_mb> <fstype> <key> <ownerUid>", false);
227            return 0;
228        }
229
230        unsigned int numSectors = (atoi(argv[3]) * (1024 * 1024)) / 512;
231        if (vm->createAsec(argv[2], numSectors, argv[4], argv[5], atoi(argv[6]))) {
232            cli->sendMsg(ResponseCode::OperationFailed, "Container creation failed", true);
233        } else {
234            cli->sendMsg(ResponseCode::CommandOkay, "Container created", false);
235        }
236    } else if (!strcmp(argv[1], "finalize")) {
237        if (argc != 3) {
238            cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec finalize <container-id>", false);
239            return 0;
240        }
241        if (vm->finalizeAsec(argv[2])) {
242            cli->sendMsg(ResponseCode::OperationFailed, "Container finalize failed", true);
243        } else {
244            cli->sendMsg(ResponseCode::CommandOkay, "Container finalized", false);
245        }
246    } else if (!strcmp(argv[1], "destroy")) {
247        if (argc != 3) {
248            cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec destroy <container-id>", false);
249            return 0;
250        }
251        if (vm->destroyAsec(argv[2])) {
252            cli->sendMsg(ResponseCode::OperationFailed, "Container destroy failed", true);
253        } else {
254            cli->sendMsg(ResponseCode::CommandOkay, "Container destroyed", false);
255        }
256    } else if (!strcmp(argv[1], "mount")) {
257        if (argc != 5) {
258            cli->sendMsg(ResponseCode::CommandSyntaxError,
259                    "Usage: asec mount <namespace-id> <key> <ownerUid>", false);
260            return 0;
261        }
262
263        int rc = vm->mountAsec(argv[2], argv[3], atoi(argv[4]));
264
265        if (rc < 0) {
266            cli->sendMsg(ResponseCode::OperationFailed, "Mount failed", true);
267        } else {
268            cli->sendMsg(ResponseCode::CommandOkay, "Mount succeeded", false);
269        }
270
271    } else if (!strcmp(argv[1], "unmount")) {
272        if (argc != 3) {
273            cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec unmount <container-id>", false);
274            return 0;
275        }
276        if (vm->unmountAsec(argv[2])) {
277            cli->sendMsg(ResponseCode::OperationFailed, "Container unmount failed", true);
278        } else {
279            cli->sendMsg(ResponseCode::CommandOkay, "Container unmounted", false);
280        }
281    } else if (!strcmp(argv[1], "rename")) {
282        if (argc != 4) {
283            cli->sendMsg(ResponseCode::CommandSyntaxError,
284                    "Usage: asec rename <old_id> <new_id>", false);
285            return 0;
286        }
287        if (vm->renameAsec(argv[2], argv[3])) {
288            cli->sendMsg(ResponseCode::OperationFailed, "Container rename failed", true);
289        } else {
290            cli->sendMsg(ResponseCode::CommandOkay, "Container renamed", false);
291        }
292    } else if (!strcmp(argv[1], "path")) {
293        if (argc != 3) {
294            cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec path <container-id>", false);
295            return 0;
296        }
297        char path[255];
298
299        if (vm->getAsecMountPath(argv[2], path, sizeof(path))) {
300            cli->sendMsg(ResponseCode::OperationFailed, "Failed to get path", true);
301        } else {
302            cli->sendMsg(ResponseCode::AsecPathResult, path, false);
303        }
304    } else {
305        cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown asec cmd", false);
306    }
307
308    return 0;
309}
310