Dan Albert | 020292b | 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 | 357bd49 | 2015-02-20 17:20:09 -0800 | [diff] [blame] | 19 | #include <stdio.h> |
Elliott Hughes | 1679e92 | 2015-02-24 12:37:13 -0800 | [diff] [blame] | 20 | #include <stdlib.h> |
Dan Albert | 357bd49 | 2015-02-20 17:20:09 -0800 | [diff] [blame] | 21 | |
Elliott Hughes | 88b4c85 | 2015-04-30 17:32:03 -0700 | [diff] [blame^] | 22 | #include <base/stringprintf.h> |
| 23 | |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 24 | #include "sysdeps.h" |
Dan Albert | b302d12 | 2015-02-24 15:51:19 -0800 | [diff] [blame] | 25 | #include "transport.h" |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 26 | |
| 27 | int gListenAll = 0; /* Not static because it is used in commandline.c. */ |
| 28 | |
| 29 | alistener listener_list = { |
| 30 | .next = &listener_list, |
| 31 | .prev = &listener_list, |
| 32 | }; |
| 33 | |
| 34 | void ss_listener_event_func(int _fd, unsigned ev, void *_l) |
| 35 | { |
| 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 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 59 | void listener_event_func(int _fd, unsigned ev, void* _l) |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 60 | { |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 61 | alistener* listener = reinterpret_cast<alistener*>(_l); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 62 | asocket *s; |
| 63 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 64 | if (ev & FDE_READ) { |
Dan Albert | 020292b | 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 | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 71 | if (fd < 0) { |
| 72 | return; |
| 73 | } |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 74 | |
| 75 | s = create_local_socket(fd); |
Dan Albert | f30d73c | 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 | 020292b | 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 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 109 | void listener_disconnect(void* listener, atransport* t) |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 110 | { |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 111 | free_listener(reinterpret_cast<alistener*>(listener)); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 112 | } |
| 113 | |
| 114 | int local_name_to_fd(const char *name) |
| 115 | { |
| 116 | int port; |
| 117 | |
| 118 | if(!strncmp("tcp:", name, 4)){ |
| 119 | int ret; |
| 120 | port = atoi(name + 4); |
| 121 | |
| 122 | if (gListenAll > 0) { |
| 123 | ret = socket_inaddr_any_server(port, SOCK_STREAM); |
| 124 | } else { |
| 125 | ret = socket_loopback_server(port, SOCK_STREAM); |
| 126 | } |
| 127 | |
| 128 | return ret; |
| 129 | } |
| 130 | #ifndef HAVE_WIN32_IPC /* no Unix-domain sockets on Win32 */ |
| 131 | // It's non-sensical to support the "reserved" space on the adb host side |
| 132 | if(!strncmp(name, "local:", 6)) { |
| 133 | return socket_local_server(name + 6, |
| 134 | ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM); |
| 135 | } else if(!strncmp(name, "localabstract:", 14)) { |
| 136 | return socket_local_server(name + 14, |
| 137 | ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM); |
| 138 | } else if(!strncmp(name, "localfilesystem:", 16)) { |
| 139 | return socket_local_server(name + 16, |
| 140 | ANDROID_SOCKET_NAMESPACE_FILESYSTEM, SOCK_STREAM); |
| 141 | } |
| 142 | |
| 143 | #endif |
| 144 | printf("unknown local portname '%s'\n", name); |
| 145 | return -1; |
| 146 | } |
| 147 | |
Elliott Hughes | 88b4c85 | 2015-04-30 17:32:03 -0700 | [diff] [blame^] | 148 | // Write the list of current listeners (network redirections) into a string. |
| 149 | std::string format_listeners() { |
| 150 | std::string result; |
| 151 | for (alistener* l = listener_list.next; l != &listener_list; l = l->next) { |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 152 | // Ignore special listeners like those for *smartsocket* |
Elliott Hughes | 88b4c85 | 2015-04-30 17:32:03 -0700 | [diff] [blame^] | 153 | if (l->connect_to[0] == '*') { |
| 154 | continue; |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 155 | } |
Elliott Hughes | 88b4c85 | 2015-04-30 17:32:03 -0700 | [diff] [blame^] | 156 | // <device-serial> " " <local-name> " " <remote-name> "\n" |
| 157 | android::base::StringAppendF(&result, "%s %s %s\n", |
| 158 | l->transport->serial, l->local_name, l->connect_to); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 159 | } |
| 160 | return result; |
| 161 | } |
| 162 | |
Elliott Hughes | a585cbd | 2015-04-20 08:09:20 -0700 | [diff] [blame] | 163 | install_status_t remove_listener(const char *local_name, atransport* transport) |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 164 | { |
| 165 | alistener *l; |
| 166 | |
| 167 | for (l = listener_list.next; l != &listener_list; l = l->next) { |
| 168 | if (!strcmp(local_name, l->local_name)) { |
| 169 | listener_disconnect(l, l->transport); |
Elliott Hughes | a585cbd | 2015-04-20 08:09:20 -0700 | [diff] [blame] | 170 | return INSTALL_STATUS_OK; |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 171 | } |
| 172 | } |
Elliott Hughes | a585cbd | 2015-04-20 08:09:20 -0700 | [diff] [blame] | 173 | return INSTALL_STATUS_LISTENER_NOT_FOUND; |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 174 | } |
| 175 | |
| 176 | void remove_all_listeners(void) |
| 177 | { |
| 178 | alistener *l, *l_next; |
| 179 | for (l = listener_list.next; l != &listener_list; l = l_next) { |
| 180 | l_next = l->next; |
| 181 | // Never remove smart sockets. |
| 182 | if (l->connect_to[0] == '*') |
| 183 | continue; |
| 184 | listener_disconnect(l, l->transport); |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | install_status_t install_listener(const char *local_name, |
| 189 | const char *connect_to, |
| 190 | atransport* transport, |
| 191 | int no_rebind) |
| 192 | { |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 193 | for (alistener* l = listener_list.next; l != &listener_list; l = l->next) { |
| 194 | if (strcmp(local_name, l->local_name) == 0) { |
| 195 | char* cto; |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 196 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 197 | /* can't repurpose a smartsocket */ |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 198 | if(l->connect_to[0] == '*') { |
| 199 | return INSTALL_STATUS_INTERNAL_ERROR; |
| 200 | } |
| 201 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 202 | /* can't repurpose a listener if 'no_rebind' is true */ |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 203 | if (no_rebind) { |
| 204 | return INSTALL_STATUS_CANNOT_REBIND; |
| 205 | } |
| 206 | |
| 207 | cto = strdup(connect_to); |
| 208 | if(cto == 0) { |
| 209 | return INSTALL_STATUS_INTERNAL_ERROR; |
| 210 | } |
| 211 | |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 212 | free((void*) l->connect_to); |
| 213 | l->connect_to = cto; |
| 214 | if (l->transport != transport) { |
| 215 | remove_transport_disconnect(l->transport, &l->disconnect); |
| 216 | l->transport = transport; |
| 217 | add_transport_disconnect(l->transport, &l->disconnect); |
| 218 | } |
| 219 | return INSTALL_STATUS_OK; |
| 220 | } |
| 221 | } |
| 222 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 223 | alistener* listener = reinterpret_cast<alistener*>( |
| 224 | calloc(1, sizeof(alistener))); |
| 225 | if (listener == nullptr) { |
| 226 | goto nomem; |
| 227 | } |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 228 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 229 | listener->local_name = strdup(local_name); |
| 230 | if (listener->local_name == nullptr) { |
| 231 | goto nomem; |
| 232 | } |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 233 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 234 | listener->connect_to = strdup(connect_to); |
| 235 | if (listener->connect_to == nullptr) { |
| 236 | goto nomem; |
| 237 | } |
| 238 | |
| 239 | listener->fd = local_name_to_fd(local_name); |
| 240 | if (listener->fd < 0) { |
Elliott Hughes | a585cbd | 2015-04-20 08:09:20 -0700 | [diff] [blame] | 241 | printf("cannot bind '%s': %s\n", local_name, strerror(errno)); |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 242 | free(listener->local_name); |
| 243 | free(listener->connect_to); |
| 244 | free(listener); |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 245 | return INSTALL_STATUS_CANNOT_BIND; |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 246 | } |
| 247 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 248 | close_on_exec(listener->fd); |
| 249 | if (!strcmp(listener->connect_to, "*smartsocket*")) { |
| 250 | fdevent_install(&listener->fde, listener->fd, ss_listener_event_func, |
| 251 | listener); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 252 | } else { |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 253 | fdevent_install(&listener->fde, listener->fd, listener_event_func, |
| 254 | listener); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 255 | } |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 256 | fdevent_set(&listener->fde, FDE_READ); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 257 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 258 | listener->next = &listener_list; |
| 259 | listener->prev = listener_list.prev; |
| 260 | listener->next->prev = listener; |
| 261 | listener->prev->next = listener; |
| 262 | listener->transport = transport; |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 263 | |
| 264 | if (transport) { |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 265 | listener->disconnect.opaque = listener; |
| 266 | listener->disconnect.func = listener_disconnect; |
| 267 | add_transport_disconnect(transport, &listener->disconnect); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 268 | } |
| 269 | return INSTALL_STATUS_OK; |
| 270 | |
| 271 | nomem: |
| 272 | fatal("cannot allocate listener"); |
| 273 | return INSTALL_STATUS_INTERNAL_ERROR; |
| 274 | } |