Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 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 "adb_listeners.h" |
| 18 | |
Dan Albert | bf10647 | 2015-02-20 17:20:09 -0800 | [diff] [blame] | 19 | #include <stdio.h> |
Elliott Hughes | 3b967f5 | 2015-02-24 12:37:13 -0800 | [diff] [blame] | 20 | #include <stdlib.h> |
Dan Albert | bf10647 | 2015-02-20 17:20:09 -0800 | [diff] [blame] | 21 | |
Elliott Hughes | e67f1f8 | 2015-04-30 17:32:03 -0700 | [diff] [blame] | 22 | #include <base/stringprintf.h> |
Elliott Hughes | 381cfa9 | 2015-07-23 17:12:58 -0700 | [diff] [blame] | 23 | #include <cutils/sockets.h> |
Elliott Hughes | e67f1f8 | 2015-04-30 17:32:03 -0700 | [diff] [blame] | 24 | |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 25 | #include "sysdeps.h" |
Dan Albert | 7664901 | 2015-02-24 15:51:19 -0800 | [diff] [blame] | 26 | #include "transport.h" |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 27 | |
| 28 | int gListenAll = 0; /* Not static because it is used in commandline.c. */ |
| 29 | |
Elliott Hughes | 424af02 | 2015-05-29 17:55:19 -0700 | [diff] [blame] | 30 | static alistener listener_list = { |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 31 | .next = &listener_list, |
| 32 | .prev = &listener_list, |
| 33 | }; |
| 34 | |
Elliott Hughes | 424af02 | 2015-05-29 17:55:19 -0700 | [diff] [blame] | 35 | static void ss_listener_event_func(int _fd, unsigned ev, void *_l) { |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 36 | asocket *s; |
| 37 | |
| 38 | if(ev & FDE_READ) { |
| 39 | struct sockaddr addr; |
| 40 | socklen_t alen; |
| 41 | int fd; |
| 42 | |
| 43 | alen = sizeof(addr); |
| 44 | fd = adb_socket_accept(_fd, &addr, &alen); |
| 45 | if(fd < 0) return; |
| 46 | |
| 47 | adb_socket_setbufsize(fd, CHUNK_SIZE); |
| 48 | |
| 49 | s = create_local_socket(fd); |
| 50 | if(s) { |
| 51 | connect_to_smartsocket(s); |
| 52 | return; |
| 53 | } |
| 54 | |
| 55 | adb_close(fd); |
| 56 | } |
| 57 | } |
| 58 | |
Elliott Hughes | 424af02 | 2015-05-29 17:55:19 -0700 | [diff] [blame] | 59 | static void listener_event_func(int _fd, unsigned ev, void* _l) |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 60 | { |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 61 | alistener* listener = reinterpret_cast<alistener*>(_l); |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 62 | asocket *s; |
| 63 | |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 64 | if (ev & FDE_READ) { |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 65 | struct sockaddr addr; |
| 66 | socklen_t alen; |
| 67 | int fd; |
| 68 | |
| 69 | alen = sizeof(addr); |
| 70 | fd = adb_socket_accept(_fd, &addr, &alen); |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 71 | if (fd < 0) { |
| 72 | return; |
| 73 | } |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 74 | |
| 75 | s = create_local_socket(fd); |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 76 | if (s) { |
| 77 | s->transport = listener->transport; |
| 78 | connect_to_remote(s, listener->connect_to); |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 79 | return; |
| 80 | } |
| 81 | |
| 82 | adb_close(fd); |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | static void free_listener(alistener* l) |
| 87 | { |
| 88 | if (l->next) { |
| 89 | l->next->prev = l->prev; |
| 90 | l->prev->next = l->next; |
| 91 | l->next = l->prev = l; |
| 92 | } |
| 93 | |
| 94 | // closes the corresponding fd |
| 95 | fdevent_remove(&l->fde); |
| 96 | |
| 97 | if (l->local_name) |
| 98 | free((char*)l->local_name); |
| 99 | |
| 100 | if (l->connect_to) |
| 101 | free((char*)l->connect_to); |
| 102 | |
| 103 | if (l->transport) { |
| 104 | remove_transport_disconnect(l->transport, &l->disconnect); |
| 105 | } |
| 106 | free(l); |
| 107 | } |
| 108 | |
Elliott Hughes | 424af02 | 2015-05-29 17:55:19 -0700 | [diff] [blame] | 109 | static void listener_disconnect(void* listener, atransport* t) { |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 110 | free_listener(reinterpret_cast<alistener*>(listener)); |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 111 | } |
| 112 | |
Spencer Low | 5200c66 | 2015-07-30 23:07:55 -0700 | [diff] [blame] | 113 | static int local_name_to_fd(const char* name, std::string* error) { |
Elliott Hughes | 424af02 | 2015-05-29 17:55:19 -0700 | [diff] [blame] | 114 | if (!strncmp("tcp:", name, 4)) { |
| 115 | int port = atoi(name + 4); |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 116 | if (gListenAll > 0) { |
Spencer Low | 5200c66 | 2015-07-30 23:07:55 -0700 | [diff] [blame] | 117 | return network_inaddr_any_server(port, SOCK_STREAM, error); |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 118 | } else { |
Spencer Low | 5200c66 | 2015-07-30 23:07:55 -0700 | [diff] [blame] | 119 | return network_loopback_server(port, SOCK_STREAM, error); |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 120 | } |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 121 | } |
Elliott Hughes | 095307e | 2015-07-09 10:03:18 -0700 | [diff] [blame] | 122 | #if !defined(_WIN32) // No Unix-domain sockets on Windows. |
Elliott Hughes | 424af02 | 2015-05-29 17:55:19 -0700 | [diff] [blame] | 123 | // It's nonsensical to support the "reserved" space on the adb host side |
| 124 | if (!strncmp(name, "local:", 6)) { |
Spencer Low | 5200c66 | 2015-07-30 23:07:55 -0700 | [diff] [blame] | 125 | return network_local_server(name + 6, |
| 126 | ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM, error); |
Elliott Hughes | 424af02 | 2015-05-29 17:55:19 -0700 | [diff] [blame] | 127 | } else if (!strncmp(name, "localabstract:", 14)) { |
Spencer Low | 5200c66 | 2015-07-30 23:07:55 -0700 | [diff] [blame] | 128 | return network_local_server(name + 14, |
| 129 | ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM, error); |
Elliott Hughes | 424af02 | 2015-05-29 17:55:19 -0700 | [diff] [blame] | 130 | } else if (!strncmp(name, "localfilesystem:", 16)) { |
Spencer Low | 5200c66 | 2015-07-30 23:07:55 -0700 | [diff] [blame] | 131 | return network_local_server(name + 16, |
| 132 | ANDROID_SOCKET_NAMESPACE_FILESYSTEM, SOCK_STREAM, error); |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 133 | } |
| 134 | |
| 135 | #endif |
Spencer Low | 5200c66 | 2015-07-30 23:07:55 -0700 | [diff] [blame] | 136 | *error = android::base::StringPrintf("unknown local portname '%s'", name); |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 137 | return -1; |
| 138 | } |
| 139 | |
Elliott Hughes | e67f1f8 | 2015-04-30 17:32:03 -0700 | [diff] [blame] | 140 | // Write the list of current listeners (network redirections) into a string. |
| 141 | std::string format_listeners() { |
| 142 | std::string result; |
| 143 | for (alistener* l = listener_list.next; l != &listener_list; l = l->next) { |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 144 | // Ignore special listeners like those for *smartsocket* |
Elliott Hughes | e67f1f8 | 2015-04-30 17:32:03 -0700 | [diff] [blame] | 145 | if (l->connect_to[0] == '*') { |
| 146 | continue; |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 147 | } |
Elliott Hughes | e67f1f8 | 2015-04-30 17:32:03 -0700 | [diff] [blame] | 148 | // <device-serial> " " <local-name> " " <remote-name> "\n" |
Elliott Hughes | 34c20bb | 2015-07-21 17:09:06 -0700 | [diff] [blame] | 149 | // Entries from "adb reverse" have no serial. |
Elliott Hughes | e67f1f8 | 2015-04-30 17:32:03 -0700 | [diff] [blame] | 150 | android::base::StringAppendF(&result, "%s %s %s\n", |
Elliott Hughes | 34c20bb | 2015-07-21 17:09:06 -0700 | [diff] [blame] | 151 | l->transport->serial ? l->transport->serial : "(reverse)", |
| 152 | l->local_name, l->connect_to); |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 153 | } |
| 154 | return result; |
| 155 | } |
| 156 | |
Elliott Hughes | 3bd73c1 | 2015-05-05 13:10:43 -0700 | [diff] [blame] | 157 | InstallStatus remove_listener(const char *local_name, atransport* transport) { |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 158 | alistener *l; |
| 159 | |
| 160 | for (l = listener_list.next; l != &listener_list; l = l->next) { |
| 161 | if (!strcmp(local_name, l->local_name)) { |
| 162 | listener_disconnect(l, l->transport); |
Elliott Hughes | 7b50609 | 2015-04-20 08:09:20 -0700 | [diff] [blame] | 163 | return INSTALL_STATUS_OK; |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 164 | } |
| 165 | } |
Elliott Hughes | 7b50609 | 2015-04-20 08:09:20 -0700 | [diff] [blame] | 166 | return INSTALL_STATUS_LISTENER_NOT_FOUND; |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 167 | } |
| 168 | |
| 169 | void remove_all_listeners(void) |
| 170 | { |
| 171 | alistener *l, *l_next; |
| 172 | for (l = listener_list.next; l != &listener_list; l = l_next) { |
| 173 | l_next = l->next; |
| 174 | // Never remove smart sockets. |
| 175 | if (l->connect_to[0] == '*') |
| 176 | continue; |
| 177 | listener_disconnect(l, l->transport); |
| 178 | } |
| 179 | } |
| 180 | |
Elliott Hughes | 3bd73c1 | 2015-05-05 13:10:43 -0700 | [diff] [blame] | 181 | InstallStatus install_listener(const std::string& local_name, |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 182 | const char *connect_to, |
| 183 | atransport* transport, |
Spencer Low | 5200c66 | 2015-07-30 23:07:55 -0700 | [diff] [blame] | 184 | int no_rebind, |
| 185 | std::string* error) |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 186 | { |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 187 | for (alistener* l = listener_list.next; l != &listener_list; l = l->next) { |
Elliott Hughes | ab52c18 | 2015-05-01 17:04:38 -0700 | [diff] [blame] | 188 | if (local_name == l->local_name) { |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 189 | char* cto; |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 190 | |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 191 | /* can't repurpose a smartsocket */ |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 192 | if(l->connect_to[0] == '*') { |
Spencer Low | bf7c605 | 2015-08-11 16:45:32 -0700 | [diff] [blame^] | 193 | *error = "cannot repurpose smartsocket"; |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 194 | return INSTALL_STATUS_INTERNAL_ERROR; |
| 195 | } |
| 196 | |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 197 | /* can't repurpose a listener if 'no_rebind' is true */ |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 198 | if (no_rebind) { |
Spencer Low | bf7c605 | 2015-08-11 16:45:32 -0700 | [diff] [blame^] | 199 | *error = "cannot rebind"; |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 200 | return INSTALL_STATUS_CANNOT_REBIND; |
| 201 | } |
| 202 | |
| 203 | cto = strdup(connect_to); |
| 204 | if(cto == 0) { |
Spencer Low | bf7c605 | 2015-08-11 16:45:32 -0700 | [diff] [blame^] | 205 | *error = "cannot duplicate string"; |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 206 | return INSTALL_STATUS_INTERNAL_ERROR; |
| 207 | } |
| 208 | |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 209 | free((void*) l->connect_to); |
| 210 | l->connect_to = cto; |
| 211 | if (l->transport != transport) { |
| 212 | remove_transport_disconnect(l->transport, &l->disconnect); |
| 213 | l->transport = transport; |
| 214 | add_transport_disconnect(l->transport, &l->disconnect); |
| 215 | } |
| 216 | return INSTALL_STATUS_OK; |
| 217 | } |
| 218 | } |
| 219 | |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 220 | alistener* listener = reinterpret_cast<alistener*>( |
| 221 | calloc(1, sizeof(alistener))); |
| 222 | if (listener == nullptr) { |
| 223 | goto nomem; |
| 224 | } |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 225 | |
Elliott Hughes | ab52c18 | 2015-05-01 17:04:38 -0700 | [diff] [blame] | 226 | listener->local_name = strdup(local_name.c_str()); |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 227 | if (listener->local_name == nullptr) { |
| 228 | goto nomem; |
| 229 | } |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 230 | |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 231 | listener->connect_to = strdup(connect_to); |
| 232 | if (listener->connect_to == nullptr) { |
| 233 | goto nomem; |
| 234 | } |
| 235 | |
Spencer Low | 5200c66 | 2015-07-30 23:07:55 -0700 | [diff] [blame] | 236 | listener->fd = local_name_to_fd(listener->local_name, error); |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 237 | if (listener->fd < 0) { |
| 238 | free(listener->local_name); |
| 239 | free(listener->connect_to); |
| 240 | free(listener); |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 241 | return INSTALL_STATUS_CANNOT_BIND; |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 242 | } |
| 243 | |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 244 | close_on_exec(listener->fd); |
| 245 | if (!strcmp(listener->connect_to, "*smartsocket*")) { |
| 246 | fdevent_install(&listener->fde, listener->fd, ss_listener_event_func, |
| 247 | listener); |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 248 | } else { |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 249 | fdevent_install(&listener->fde, listener->fd, listener_event_func, |
| 250 | listener); |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 251 | } |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 252 | fdevent_set(&listener->fde, FDE_READ); |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 253 | |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 254 | listener->next = &listener_list; |
| 255 | listener->prev = listener_list.prev; |
| 256 | listener->next->prev = listener; |
| 257 | listener->prev->next = listener; |
| 258 | listener->transport = transport; |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 259 | |
| 260 | if (transport) { |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 261 | listener->disconnect.opaque = listener; |
| 262 | listener->disconnect.func = listener_disconnect; |
| 263 | add_transport_disconnect(transport, &listener->disconnect); |
Dan Albert | e9fca14 | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 264 | } |
| 265 | return INSTALL_STATUS_OK; |
| 266 | |
| 267 | nomem: |
| 268 | fatal("cannot allocate listener"); |
| 269 | return INSTALL_STATUS_INTERNAL_ERROR; |
| 270 | } |