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 | |
Elliott Hughes | d98ca8a | 2015-05-29 17:55:19 -0700 | [diff] [blame^] | 29 | static alistener listener_list = { |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 30 | .next = &listener_list, |
| 31 | .prev = &listener_list, |
| 32 | }; |
| 33 | |
Elliott Hughes | d98ca8a | 2015-05-29 17:55:19 -0700 | [diff] [blame^] | 34 | static void ss_listener_event_func(int _fd, unsigned ev, void *_l) { |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 35 | asocket *s; |
| 36 | |
| 37 | if(ev & FDE_READ) { |
| 38 | struct sockaddr addr; |
| 39 | socklen_t alen; |
| 40 | int fd; |
| 41 | |
| 42 | alen = sizeof(addr); |
| 43 | fd = adb_socket_accept(_fd, &addr, &alen); |
| 44 | if(fd < 0) return; |
| 45 | |
| 46 | adb_socket_setbufsize(fd, CHUNK_SIZE); |
| 47 | |
| 48 | s = create_local_socket(fd); |
| 49 | if(s) { |
| 50 | connect_to_smartsocket(s); |
| 51 | return; |
| 52 | } |
| 53 | |
| 54 | adb_close(fd); |
| 55 | } |
| 56 | } |
| 57 | |
Elliott Hughes | d98ca8a | 2015-05-29 17:55:19 -0700 | [diff] [blame^] | 58 | static void listener_event_func(int _fd, unsigned ev, void* _l) |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 59 | { |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 60 | alistener* listener = reinterpret_cast<alistener*>(_l); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 61 | asocket *s; |
| 62 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 63 | if (ev & FDE_READ) { |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 64 | struct sockaddr addr; |
| 65 | socklen_t alen; |
| 66 | int fd; |
| 67 | |
| 68 | alen = sizeof(addr); |
| 69 | fd = adb_socket_accept(_fd, &addr, &alen); |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 70 | if (fd < 0) { |
| 71 | return; |
| 72 | } |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 73 | |
| 74 | s = create_local_socket(fd); |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 75 | if (s) { |
| 76 | s->transport = listener->transport; |
| 77 | connect_to_remote(s, listener->connect_to); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 78 | return; |
| 79 | } |
| 80 | |
| 81 | adb_close(fd); |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | static void free_listener(alistener* l) |
| 86 | { |
| 87 | if (l->next) { |
| 88 | l->next->prev = l->prev; |
| 89 | l->prev->next = l->next; |
| 90 | l->next = l->prev = l; |
| 91 | } |
| 92 | |
| 93 | // closes the corresponding fd |
| 94 | fdevent_remove(&l->fde); |
| 95 | |
| 96 | if (l->local_name) |
| 97 | free((char*)l->local_name); |
| 98 | |
| 99 | if (l->connect_to) |
| 100 | free((char*)l->connect_to); |
| 101 | |
| 102 | if (l->transport) { |
| 103 | remove_transport_disconnect(l->transport, &l->disconnect); |
| 104 | } |
| 105 | free(l); |
| 106 | } |
| 107 | |
Elliott Hughes | d98ca8a | 2015-05-29 17:55:19 -0700 | [diff] [blame^] | 108 | static void listener_disconnect(void* listener, atransport* t) { |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 109 | free_listener(reinterpret_cast<alistener*>(listener)); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 110 | } |
| 111 | |
Elliott Hughes | d98ca8a | 2015-05-29 17:55:19 -0700 | [diff] [blame^] | 112 | static int local_name_to_fd(const char* name) { |
| 113 | if (!strncmp("tcp:", name, 4)) { |
| 114 | int port = atoi(name + 4); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 115 | if (gListenAll > 0) { |
Elliott Hughes | d98ca8a | 2015-05-29 17:55:19 -0700 | [diff] [blame^] | 116 | return socket_inaddr_any_server(port, SOCK_STREAM); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 117 | } else { |
Elliott Hughes | d98ca8a | 2015-05-29 17:55:19 -0700 | [diff] [blame^] | 118 | return socket_loopback_server(port, SOCK_STREAM); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 119 | } |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 120 | } |
| 121 | #ifndef HAVE_WIN32_IPC /* no Unix-domain sockets on Win32 */ |
Elliott Hughes | d98ca8a | 2015-05-29 17:55:19 -0700 | [diff] [blame^] | 122 | // It's nonsensical to support the "reserved" space on the adb host side |
| 123 | if (!strncmp(name, "local:", 6)) { |
| 124 | return socket_local_server(name + 6, ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM); |
| 125 | } else if (!strncmp(name, "localabstract:", 14)) { |
| 126 | return socket_local_server(name + 14, ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM); |
| 127 | } else if (!strncmp(name, "localfilesystem:", 16)) { |
| 128 | return socket_local_server(name + 16, ANDROID_SOCKET_NAMESPACE_FILESYSTEM, SOCK_STREAM); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 129 | } |
| 130 | |
| 131 | #endif |
| 132 | printf("unknown local portname '%s'\n", name); |
| 133 | return -1; |
| 134 | } |
| 135 | |
Elliott Hughes | 88b4c85 | 2015-04-30 17:32:03 -0700 | [diff] [blame] | 136 | // Write the list of current listeners (network redirections) into a string. |
| 137 | std::string format_listeners() { |
| 138 | std::string result; |
| 139 | for (alistener* l = listener_list.next; l != &listener_list; l = l->next) { |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 140 | // Ignore special listeners like those for *smartsocket* |
Elliott Hughes | 88b4c85 | 2015-04-30 17:32:03 -0700 | [diff] [blame] | 141 | if (l->connect_to[0] == '*') { |
| 142 | continue; |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 143 | } |
Elliott Hughes | 88b4c85 | 2015-04-30 17:32:03 -0700 | [diff] [blame] | 144 | // <device-serial> " " <local-name> " " <remote-name> "\n" |
| 145 | android::base::StringAppendF(&result, "%s %s %s\n", |
| 146 | l->transport->serial, l->local_name, l->connect_to); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 147 | } |
| 148 | return result; |
| 149 | } |
| 150 | |
Elliott Hughes | 3aec2ba | 2015-05-05 13:10:43 -0700 | [diff] [blame] | 151 | InstallStatus remove_listener(const char *local_name, atransport* transport) { |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 152 | alistener *l; |
| 153 | |
| 154 | for (l = listener_list.next; l != &listener_list; l = l->next) { |
| 155 | if (!strcmp(local_name, l->local_name)) { |
| 156 | listener_disconnect(l, l->transport); |
Elliott Hughes | a585cbd | 2015-04-20 08:09:20 -0700 | [diff] [blame] | 157 | return INSTALL_STATUS_OK; |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 158 | } |
| 159 | } |
Elliott Hughes | a585cbd | 2015-04-20 08:09:20 -0700 | [diff] [blame] | 160 | return INSTALL_STATUS_LISTENER_NOT_FOUND; |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 161 | } |
| 162 | |
| 163 | void remove_all_listeners(void) |
| 164 | { |
| 165 | alistener *l, *l_next; |
| 166 | for (l = listener_list.next; l != &listener_list; l = l_next) { |
| 167 | l_next = l->next; |
| 168 | // Never remove smart sockets. |
| 169 | if (l->connect_to[0] == '*') |
| 170 | continue; |
| 171 | listener_disconnect(l, l->transport); |
| 172 | } |
| 173 | } |
| 174 | |
Elliott Hughes | 3aec2ba | 2015-05-05 13:10:43 -0700 | [diff] [blame] | 175 | InstallStatus install_listener(const std::string& local_name, |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 176 | const char *connect_to, |
| 177 | atransport* transport, |
| 178 | int no_rebind) |
| 179 | { |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 180 | for (alistener* l = listener_list.next; l != &listener_list; l = l->next) { |
Elliott Hughes | fb59684 | 2015-05-01 17:04:38 -0700 | [diff] [blame] | 181 | if (local_name == l->local_name) { |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 182 | char* cto; |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 183 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 184 | /* can't repurpose a smartsocket */ |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 185 | if(l->connect_to[0] == '*') { |
| 186 | return INSTALL_STATUS_INTERNAL_ERROR; |
| 187 | } |
| 188 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 189 | /* can't repurpose a listener if 'no_rebind' is true */ |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 190 | if (no_rebind) { |
| 191 | return INSTALL_STATUS_CANNOT_REBIND; |
| 192 | } |
| 193 | |
| 194 | cto = strdup(connect_to); |
| 195 | if(cto == 0) { |
| 196 | return INSTALL_STATUS_INTERNAL_ERROR; |
| 197 | } |
| 198 | |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 199 | free((void*) l->connect_to); |
| 200 | l->connect_to = cto; |
| 201 | if (l->transport != transport) { |
| 202 | remove_transport_disconnect(l->transport, &l->disconnect); |
| 203 | l->transport = transport; |
| 204 | add_transport_disconnect(l->transport, &l->disconnect); |
| 205 | } |
| 206 | return INSTALL_STATUS_OK; |
| 207 | } |
| 208 | } |
| 209 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 210 | alistener* listener = reinterpret_cast<alistener*>( |
| 211 | calloc(1, sizeof(alistener))); |
| 212 | if (listener == nullptr) { |
| 213 | goto nomem; |
| 214 | } |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 215 | |
Elliott Hughes | fb59684 | 2015-05-01 17:04:38 -0700 | [diff] [blame] | 216 | listener->local_name = strdup(local_name.c_str()); |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 217 | if (listener->local_name == nullptr) { |
| 218 | goto nomem; |
| 219 | } |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 220 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 221 | listener->connect_to = strdup(connect_to); |
| 222 | if (listener->connect_to == nullptr) { |
| 223 | goto nomem; |
| 224 | } |
| 225 | |
Elliott Hughes | fb59684 | 2015-05-01 17:04:38 -0700 | [diff] [blame] | 226 | listener->fd = local_name_to_fd(listener->local_name); |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 227 | if (listener->fd < 0) { |
Elliott Hughes | fb59684 | 2015-05-01 17:04:38 -0700 | [diff] [blame] | 228 | printf("cannot bind '%s': %s\n", listener->local_name, strerror(errno)); |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 229 | free(listener->local_name); |
| 230 | free(listener->connect_to); |
| 231 | free(listener); |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 232 | return INSTALL_STATUS_CANNOT_BIND; |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 233 | } |
| 234 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 235 | close_on_exec(listener->fd); |
| 236 | if (!strcmp(listener->connect_to, "*smartsocket*")) { |
| 237 | fdevent_install(&listener->fde, listener->fd, ss_listener_event_func, |
| 238 | listener); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 239 | } else { |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 240 | fdevent_install(&listener->fde, listener->fd, listener_event_func, |
| 241 | listener); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 242 | } |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 243 | fdevent_set(&listener->fde, FDE_READ); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 244 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 245 | listener->next = &listener_list; |
| 246 | listener->prev = listener_list.prev; |
| 247 | listener->next->prev = listener; |
| 248 | listener->prev->next = listener; |
| 249 | listener->transport = transport; |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 250 | |
| 251 | if (transport) { |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 252 | listener->disconnect.opaque = listener; |
| 253 | listener->disconnect.func = listener_disconnect; |
| 254 | add_transport_disconnect(transport, &listener->disconnect); |
Dan Albert | 020292b | 2015-02-18 18:03:26 -0800 | [diff] [blame] | 255 | } |
| 256 | return INSTALL_STATUS_OK; |
| 257 | |
| 258 | nomem: |
| 259 | fatal("cannot allocate listener"); |
| 260 | return INSTALL_STATUS_INTERNAL_ERROR; |
| 261 | } |