San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 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 | #include <errno.h> |
San Mehat | 3d40729 | 2009-05-07 08:49:30 -0700 | [diff] [blame] | 17 | #include <string.h> |
Olivier Bailly | b93e581 | 2010-11-17 11:47:23 -0800 | [diff] [blame] | 18 | #include <stdlib.h> |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 19 | |
| 20 | #define LOG_TAG "FrameworkListener" |
| 21 | |
| 22 | #include <cutils/log.h> |
| 23 | |
| 24 | #include <sysutils/FrameworkListener.h> |
| 25 | #include <sysutils/FrameworkCommand.h> |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 26 | #include <sysutils/SocketClient.h> |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 27 | |
Josef Kindberg | 6d358ae | 2011-02-23 12:40:44 +0100 | [diff] [blame] | 28 | static const int CMD_BUF_SIZE = 1024; |
| 29 | |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 30 | FrameworkListener::FrameworkListener(const char *socketName, bool withSeq) : |
| 31 | SocketListener(socketName, true, withSeq) { |
| 32 | init(socketName, withSeq); |
| 33 | } |
| 34 | |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 35 | FrameworkListener::FrameworkListener(const char *socketName) : |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 36 | SocketListener(socketName, true, false) { |
| 37 | init(socketName, false); |
| 38 | } |
| 39 | |
| 40 | void FrameworkListener::init(const char *socketName, bool withSeq) { |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 41 | mCommands = new FrameworkCommandCollection(); |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 42 | errorRate = 0; |
| 43 | mCommandCount = 0; |
| 44 | mWithSeq = withSeq; |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 45 | } |
| 46 | |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 47 | bool FrameworkListener::onDataAvailable(SocketClient *c) { |
Josef Kindberg | 6d358ae | 2011-02-23 12:40:44 +0100 | [diff] [blame] | 48 | char buffer[CMD_BUF_SIZE]; |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 49 | int len; |
| 50 | |
David 'Digit' Turner | c6b0def | 2011-01-17 03:29:04 +0100 | [diff] [blame] | 51 | len = TEMP_FAILURE_RETRY(read(c->getSocket(), buffer, sizeof(buffer))); |
| 52 | if (len < 0) { |
San Mehat | 7e8529a | 2010-03-25 09:31:42 -0700 | [diff] [blame] | 53 | SLOGE("read() failed (%s)", strerror(errno)); |
Kenny Root | f31d2ed | 2010-09-14 09:55:22 -0700 | [diff] [blame] | 54 | return false; |
San Mehat | c73a3a5 | 2009-06-15 14:06:03 -0700 | [diff] [blame] | 55 | } else if (!len) |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 56 | return false; |
Josef Kindberg | 6d358ae | 2011-02-23 12:40:44 +0100 | [diff] [blame] | 57 | if(buffer[len-1] != '\0') |
| 58 | SLOGW("String is not zero-terminated"); |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 59 | |
San Mehat | d768066 | 2009-05-12 11:16:59 -0700 | [diff] [blame] | 60 | int offset = 0; |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 61 | int i; |
| 62 | |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 63 | for (i = 0; i < len; i++) { |
San Mehat | c73a3a5 | 2009-06-15 14:06:03 -0700 | [diff] [blame] | 64 | if (buffer[i] == '\0') { |
David 'Digit' Turner | c6b0def | 2011-01-17 03:29:04 +0100 | [diff] [blame] | 65 | /* IMPORTANT: dispatchCommand() expects a zero-terminated string */ |
San Mehat | d768066 | 2009-05-12 11:16:59 -0700 | [diff] [blame] | 66 | dispatchCommand(c, buffer + offset); |
| 67 | offset = i + 1; |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 68 | } |
| 69 | } |
Josef Kindberg | 6d358ae | 2011-02-23 12:40:44 +0100 | [diff] [blame] | 70 | |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 71 | return true; |
| 72 | } |
| 73 | |
| 74 | void FrameworkListener::registerCmd(FrameworkCommand *cmd) { |
| 75 | mCommands->push_back(cmd); |
| 76 | } |
| 77 | |
San Mehat | c73a3a5 | 2009-06-15 14:06:03 -0700 | [diff] [blame] | 78 | void FrameworkListener::dispatchCommand(SocketClient *cli, char *data) { |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 79 | FrameworkCommandCollection::iterator i; |
| 80 | int argc = 0; |
San Mehat | c73a3a5 | 2009-06-15 14:06:03 -0700 | [diff] [blame] | 81 | char *argv[FrameworkListener::CMD_ARGS_MAX]; |
Josef Kindberg | 6d358ae | 2011-02-23 12:40:44 +0100 | [diff] [blame] | 82 | char tmp[CMD_BUF_SIZE]; |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 83 | char *p = data; |
| 84 | char *q = tmp; |
David 'Digit' Turner | c6b0def | 2011-01-17 03:29:04 +0100 | [diff] [blame] | 85 | char *qlimit = tmp + sizeof(tmp) - 1; |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 86 | bool esc = false; |
| 87 | bool quote = false; |
| 88 | int k; |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 89 | bool haveCmdNum = !mWithSeq; |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 90 | |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 91 | memset(argv, 0, sizeof(argv)); |
| 92 | memset(tmp, 0, sizeof(tmp)); |
| 93 | while(*p) { |
| 94 | if (*p == '\\') { |
| 95 | if (esc) { |
David 'Digit' Turner | c6b0def | 2011-01-17 03:29:04 +0100 | [diff] [blame] | 96 | if (q >= qlimit) |
| 97 | goto overflow; |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 98 | *q++ = '\\'; |
| 99 | esc = false; |
| 100 | } else |
| 101 | esc = true; |
| 102 | p++; |
| 103 | continue; |
| 104 | } else if (esc) { |
David 'Digit' Turner | c6b0def | 2011-01-17 03:29:04 +0100 | [diff] [blame] | 105 | if (*p == '"') { |
| 106 | if (q >= qlimit) |
| 107 | goto overflow; |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 108 | *q++ = '"'; |
David 'Digit' Turner | c6b0def | 2011-01-17 03:29:04 +0100 | [diff] [blame] | 109 | } else if (*p == '\\') { |
| 110 | if (q >= qlimit) |
| 111 | goto overflow; |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 112 | *q++ = '\\'; |
David 'Digit' Turner | c6b0def | 2011-01-17 03:29:04 +0100 | [diff] [blame] | 113 | } else { |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 114 | cli->sendMsg(500, "Unsupported escape sequence", false); |
| 115 | goto out; |
| 116 | } |
| 117 | p++; |
| 118 | esc = false; |
| 119 | continue; |
| 120 | } |
San Mehat | c73a3a5 | 2009-06-15 14:06:03 -0700 | [diff] [blame] | 121 | |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 122 | if (*p == '"') { |
| 123 | if (quote) |
| 124 | quote = false; |
| 125 | else |
| 126 | quote = true; |
| 127 | p++; |
| 128 | continue; |
| 129 | } |
| 130 | |
David 'Digit' Turner | c6b0def | 2011-01-17 03:29:04 +0100 | [diff] [blame] | 131 | if (q >= qlimit) |
| 132 | goto overflow; |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 133 | *q = *p++; |
| 134 | if (!quote && *q == ' ') { |
| 135 | *q = '\0'; |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 136 | if (!haveCmdNum) { |
| 137 | char *endptr; |
| 138 | int cmdNum = (int)strtol(tmp, &endptr, 0); |
| 139 | if (endptr == NULL || *endptr != '\0') { |
| 140 | cli->sendMsg(500, "Invalid sequence number", false); |
| 141 | goto out; |
| 142 | } |
| 143 | cli->setCmdNum(cmdNum); |
| 144 | haveCmdNum = true; |
| 145 | } else { |
| 146 | if (argc >= CMD_ARGS_MAX) |
| 147 | goto overflow; |
| 148 | argv[argc++] = strdup(tmp); |
| 149 | } |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 150 | memset(tmp, 0, sizeof(tmp)); |
| 151 | q = tmp; |
| 152 | continue; |
| 153 | } |
| 154 | q++; |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 155 | } |
| 156 | |
David 'Digit' Turner | c6b0def | 2011-01-17 03:29:04 +0100 | [diff] [blame] | 157 | *q = '\0'; |
| 158 | if (argc >= CMD_ARGS_MAX) |
| 159 | goto overflow; |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 160 | argv[argc++] = strdup(tmp); |
| 161 | #if 0 |
| 162 | for (k = 0; k < argc; k++) { |
San Mehat | 7e8529a | 2010-03-25 09:31:42 -0700 | [diff] [blame] | 163 | SLOGD("arg[%d] = '%s'", k, argv[k]); |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 164 | } |
| 165 | #endif |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 166 | |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 167 | if (quote) { |
| 168 | cli->sendMsg(500, "Unclosed quotes error", false); |
| 169 | goto out; |
| 170 | } |
David 'Digit' Turner | c6b0def | 2011-01-17 03:29:04 +0100 | [diff] [blame] | 171 | |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 172 | if (errorRate && (++mCommandCount % errorRate == 0)) { |
| 173 | /* ignore this command - let the timeout handler handle it */ |
| 174 | SLOGE("Faking a timeout"); |
| 175 | goto out; |
| 176 | } |
| 177 | |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 178 | for (i = mCommands->begin(); i != mCommands->end(); ++i) { |
| 179 | FrameworkCommand *c = *i; |
| 180 | |
San Mehat | c73a3a5 | 2009-06-15 14:06:03 -0700 | [diff] [blame] | 181 | if (!strcmp(argv[0], c->getCommand())) { |
| 182 | if (c->runCommand(cli, argc, argv)) { |
San Mehat | 7e8529a | 2010-03-25 09:31:42 -0700 | [diff] [blame] | 183 | SLOGW("Handler '%s' error (%s)", c->getCommand(), strerror(errno)); |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 184 | } |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 185 | goto out; |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 186 | } |
| 187 | } |
San Mehat | d768066 | 2009-05-12 11:16:59 -0700 | [diff] [blame] | 188 | cli->sendMsg(500, "Command not recognized", false); |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 189 | out: |
| 190 | int j; |
| 191 | for (j = 0; j < argc; j++) |
| 192 | free(argv[j]); |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 193 | return; |
David 'Digit' Turner | c6b0def | 2011-01-17 03:29:04 +0100 | [diff] [blame] | 194 | |
| 195 | overflow: |
Nick Kralevich | 6bbaaa6 | 2011-11-18 08:46:54 -0800 | [diff] [blame] | 196 | LOG_EVENT_INT(78001, cli->getUid()); |
David 'Digit' Turner | c6b0def | 2011-01-17 03:29:04 +0100 | [diff] [blame] | 197 | cli->sendMsg(500, "Command too long", false); |
| 198 | goto out; |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 199 | } |