| /* |
| * Copyright (C) 2007 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define TRACE_TAG TRACE_TRANSPORT |
| |
| #include "sysdeps.h" |
| #include "transport.h" |
| |
| #include <ctype.h> |
| #include <errno.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| #include <list> |
| |
| #include <base/logging.h> |
| #include <base/stringprintf.h> |
| #include <base/strings.h> |
| |
| #include "adb.h" |
| #include "adb_utils.h" |
| |
| static void transport_unref(atransport *t); |
| |
| static std::list<atransport*> transport_list; |
| static std::list<atransport*> pending_list; |
| |
| ADB_MUTEX_DEFINE( transport_lock ); |
| |
| // Each atransport contains a list of adisconnects (t->disconnects). |
| // An adisconnect contains a link to the next/prev adisconnect, a function |
| // pointer to a disconnect callback which takes a void* piece of user data and |
| // the atransport, and some user data for the callback (helpfully named |
| // "opaque"). |
| // |
| // The list is circular. New items are added to the entry member of the list |
| // (t->disconnects) by add_transport_disconnect. |
| // |
| // run_transport_disconnects invokes each function in the list. |
| // |
| // Gotchas: |
| // * run_transport_disconnects assumes that t->disconnects is non-null, so |
| // this can't be run on a zeroed atransport. |
| // * The callbacks in this list are not removed when called, and this function |
| // is not guarded against running more than once. As such, ensure that this |
| // function is not called multiple times on the same atransport. |
| // TODO(danalbert): Just fix this so that it is guarded once you have tests. |
| void run_transport_disconnects(atransport* t) |
| { |
| adisconnect* dis = t->disconnects.next; |
| |
| D("%s: run_transport_disconnects\n", t->serial); |
| while (dis != &t->disconnects) { |
| adisconnect* next = dis->next; |
| dis->func( dis->opaque, t ); |
| dis = next; |
| } |
| } |
| |
| static void dump_packet(const char* name, const char* func, apacket* p) { |
| unsigned command = p->msg.command; |
| int len = p->msg.data_length; |
| char cmd[9]; |
| char arg0[12], arg1[12]; |
| int n; |
| |
| for (n = 0; n < 4; n++) { |
| int b = (command >> (n*8)) & 255; |
| if (b < 32 || b >= 127) |
| break; |
| cmd[n] = (char)b; |
| } |
| if (n == 4) { |
| cmd[4] = 0; |
| } else { |
| /* There is some non-ASCII name in the command, so dump |
| * the hexadecimal value instead */ |
| snprintf(cmd, sizeof cmd, "%08x", command); |
| } |
| |
| if (p->msg.arg0 < 256U) |
| snprintf(arg0, sizeof arg0, "%d", p->msg.arg0); |
| else |
| snprintf(arg0, sizeof arg0, "0x%x", p->msg.arg0); |
| |
| if (p->msg.arg1 < 256U) |
| snprintf(arg1, sizeof arg1, "%d", p->msg.arg1); |
| else |
| snprintf(arg1, sizeof arg1, "0x%x", p->msg.arg1); |
| |
| D("%s: %s: [%s] arg0=%s arg1=%s (len=%d) ", |
| name, func, cmd, arg0, arg1, len); |
| dump_hex(p->data, len); |
| } |
| |
| static int |
| read_packet(int fd, const char* name, apacket** ppacket) |
| { |
| char buff[8]; |
| if (!name) { |
| snprintf(buff, sizeof buff, "fd=%d", fd); |
| name = buff; |
| } |
| char* p = reinterpret_cast<char*>(ppacket); /* really read a packet address */ |
| int len = sizeof(apacket*); |
| while(len > 0) { |
| int r = adb_read(fd, p, len); |
| if(r > 0) { |
| len -= r; |
| p += r; |
| } else { |
| D("%s: read_packet (fd=%d), error ret=%d: %s\n", name, fd, r, strerror(errno)); |
| return -1; |
| } |
| } |
| |
| if (ADB_TRACING) { |
| dump_packet(name, "from remote", *ppacket); |
| } |
| return 0; |
| } |
| |
| static int |
| write_packet(int fd, const char* name, apacket** ppacket) |
| { |
| char buff[8]; |
| if (!name) { |
| snprintf(buff, sizeof buff, "fd=%d", fd); |
| name = buff; |
| } |
| if (ADB_TRACING) { |
| dump_packet(name, "to remote", *ppacket); |
| } |
| char* p = reinterpret_cast<char*>(ppacket); /* we really write the packet address */ |
| int len = sizeof(apacket*); |
| while(len > 0) { |
| int r = adb_write(fd, p, len); |
| if(r > 0) { |
| len -= r; |
| p += r; |
| } else { |
| D("%s: write_packet (fd=%d) error ret=%d: %s\n", name, fd, r, strerror(errno)); |
| return -1; |
| } |
| } |
| return 0; |
| } |
| |
| static void transport_socket_events(int fd, unsigned events, void *_t) |
| { |
| atransport *t = reinterpret_cast<atransport*>(_t); |
| D("transport_socket_events(fd=%d, events=%04x,...)\n", fd, events); |
| if(events & FDE_READ){ |
| apacket *p = 0; |
| if(read_packet(fd, t->serial, &p)){ |
| D("%s: failed to read packet from transport socket on fd %d\n", t->serial, fd); |
| } else { |
| handle_packet(p, (atransport *) _t); |
| } |
| } |
| } |
| |
| void send_packet(apacket *p, atransport *t) |
| { |
| unsigned char *x; |
| unsigned sum; |
| unsigned count; |
| |
| p->msg.magic = p->msg.command ^ 0xffffffff; |
| |
| count = p->msg.data_length; |
| x = (unsigned char *) p->data; |
| sum = 0; |
| while(count-- > 0){ |
| sum += *x++; |
| } |
| p->msg.data_check = sum; |
| |
| print_packet("send", p); |
| |
| if (t == NULL) { |
| D("Transport is null \n"); |
| // Zap errno because print_packet() and other stuff have errno effect. |
| errno = 0; |
| fatal_errno("Transport is null"); |
| } |
| |
| if(write_packet(t->transport_socket, t->serial, &p)){ |
| fatal_errno("cannot enqueue packet on transport socket"); |
| } |
| } |
| |
| /* The transport is opened by transport_register_func before |
| ** the input and output threads are started. |
| ** |
| ** The output thread issues a SYNC(1, token) message to let |
| ** the input thread know to start things up. In the event |
| ** of transport IO failure, the output thread will post a |
| ** SYNC(0,0) message to ensure shutdown. |
| ** |
| ** The transport will not actually be closed until both |
| ** threads exit, but the input thread will kick the transport |
| ** on its way out to disconnect the underlying device. |
| */ |
| |
| static void *output_thread(void *_t) |
| { |
| atransport *t = reinterpret_cast<atransport*>(_t); |
| apacket *p; |
| |
| D("%s: starting transport output thread on fd %d, SYNC online (%d)\n", |
| t->serial, t->fd, t->sync_token + 1); |
| p = get_apacket(); |
| p->msg.command = A_SYNC; |
| p->msg.arg0 = 1; |
| p->msg.arg1 = ++(t->sync_token); |
| p->msg.magic = A_SYNC ^ 0xffffffff; |
| if(write_packet(t->fd, t->serial, &p)) { |
| put_apacket(p); |
| D("%s: failed to write SYNC packet\n", t->serial); |
| goto oops; |
| } |
| |
| D("%s: data pump started\n", t->serial); |
| for(;;) { |
| p = get_apacket(); |
| |
| if(t->read_from_remote(p, t) == 0){ |
| D("%s: received remote packet, sending to transport\n", |
| t->serial); |
| if(write_packet(t->fd, t->serial, &p)){ |
| put_apacket(p); |
| D("%s: failed to write apacket to transport\n", t->serial); |
| goto oops; |
| } |
| } else { |
| D("%s: remote read failed for transport\n", t->serial); |
| put_apacket(p); |
| break; |
| } |
| } |
| |
| D("%s: SYNC offline for transport\n", t->serial); |
| p = get_apacket(); |
| p->msg.command = A_SYNC; |
| p->msg.arg0 = 0; |
| p->msg.arg1 = 0; |
| p->msg.magic = A_SYNC ^ 0xffffffff; |
| if(write_packet(t->fd, t->serial, &p)) { |
| put_apacket(p); |
| D("%s: failed to write SYNC apacket to transport\n", t->serial); |
| } |
| |
| oops: |
| D("%s: transport output thread is exiting\n", t->serial); |
| kick_transport(t); |
| transport_unref(t); |
| return 0; |
| } |
| |
| static void *input_thread(void *_t) |
| { |
| atransport *t = reinterpret_cast<atransport*>(_t); |
| apacket *p; |
| int active = 0; |
| |
| D("%s: starting transport input thread, reading from fd %d\n", |
| t->serial, t->fd); |
| |
| for(;;){ |
| if(read_packet(t->fd, t->serial, &p)) { |
| D("%s: failed to read apacket from transport on fd %d\n", |
| t->serial, t->fd ); |
| break; |
| } |
| if(p->msg.command == A_SYNC){ |
| if(p->msg.arg0 == 0) { |
| D("%s: transport SYNC offline\n", t->serial); |
| put_apacket(p); |
| break; |
| } else { |
| if(p->msg.arg1 == t->sync_token) { |
| D("%s: transport SYNC online\n", t->serial); |
| active = 1; |
| } else { |
| D("%s: transport ignoring SYNC %d != %d\n", |
| t->serial, p->msg.arg1, t->sync_token); |
| } |
| } |
| } else { |
| if(active) { |
| D("%s: transport got packet, sending to remote\n", t->serial); |
| t->write_to_remote(p, t); |
| } else { |
| D("%s: transport ignoring packet while offline\n", t->serial); |
| } |
| } |
| |
| put_apacket(p); |
| } |
| |
| D("%s: transport input thread is exiting, fd %d\n", t->serial, t->fd); |
| kick_transport(t); |
| transport_unref(t); |
| return 0; |
| } |
| |
| static void kick_transport_locked(atransport* t) { |
| CHECK(t != nullptr); |
| if (!t->kicked) { |
| t->kicked = true; |
| t->kick(t); |
| } |
| } |
| |
| void kick_transport(atransport* t) { |
| adb_mutex_lock(&transport_lock); |
| kick_transport_locked(t); |
| adb_mutex_unlock(&transport_lock); |
| } |
| |
| static int transport_registration_send = -1; |
| static int transport_registration_recv = -1; |
| static fdevent transport_registration_fde; |
| |
| |
| #if ADB_HOST |
| |
| /* this adds support required by the 'track-devices' service. |
| * this is used to send the content of "list_transport" to any |
| * number of client connections that want it through a single |
| * live TCP connection |
| */ |
| struct device_tracker { |
| asocket socket; |
| int update_needed; |
| device_tracker* next; |
| }; |
| |
| /* linked list of all device trackers */ |
| static device_tracker* device_tracker_list; |
| |
| static void |
| device_tracker_remove( device_tracker* tracker ) |
| { |
| device_tracker** pnode = &device_tracker_list; |
| device_tracker* node = *pnode; |
| |
| adb_mutex_lock( &transport_lock ); |
| while (node) { |
| if (node == tracker) { |
| *pnode = node->next; |
| break; |
| } |
| pnode = &node->next; |
| node = *pnode; |
| } |
| adb_mutex_unlock( &transport_lock ); |
| } |
| |
| static void |
| device_tracker_close( asocket* socket ) |
| { |
| device_tracker* tracker = (device_tracker*) socket; |
| asocket* peer = socket->peer; |
| |
| D( "device tracker %p removed\n", tracker); |
| if (peer) { |
| peer->peer = NULL; |
| peer->close(peer); |
| } |
| device_tracker_remove(tracker); |
| free(tracker); |
| } |
| |
| static int |
| device_tracker_enqueue( asocket* socket, apacket* p ) |
| { |
| /* you can't read from a device tracker, close immediately */ |
| put_apacket(p); |
| device_tracker_close(socket); |
| return -1; |
| } |
| |
| static int device_tracker_send(device_tracker* tracker, const std::string& string) { |
| apacket* p = get_apacket(); |
| asocket* peer = tracker->socket.peer; |
| |
| snprintf(reinterpret_cast<char*>(p->data), 5, "%04x", static_cast<int>(string.size())); |
| memcpy(&p->data[4], string.data(), string.size()); |
| p->len = 4 + string.size(); |
| return peer->enqueue(peer, p); |
| } |
| |
| static void device_tracker_ready(asocket* socket) { |
| device_tracker* tracker = reinterpret_cast<device_tracker*>(socket); |
| |
| // We want to send the device list when the tracker connects |
| // for the first time, even if no update occurred. |
| if (tracker->update_needed > 0) { |
| tracker->update_needed = 0; |
| |
| std::string transports = list_transports(false); |
| device_tracker_send(tracker, transports); |
| } |
| } |
| |
| asocket* |
| create_device_tracker(void) |
| { |
| device_tracker* tracker = reinterpret_cast<device_tracker*>(calloc(1, sizeof(*tracker))); |
| if (tracker == nullptr) fatal("cannot allocate device tracker"); |
| |
| D( "device tracker %p created\n", tracker); |
| |
| tracker->socket.enqueue = device_tracker_enqueue; |
| tracker->socket.ready = device_tracker_ready; |
| tracker->socket.close = device_tracker_close; |
| tracker->update_needed = 1; |
| |
| tracker->next = device_tracker_list; |
| device_tracker_list = tracker; |
| |
| return &tracker->socket; |
| } |
| |
| |
| // Call this function each time the transport list has changed. |
| void update_transports() { |
| std::string transports = list_transports(false); |
| |
| device_tracker* tracker = device_tracker_list; |
| while (tracker != nullptr) { |
| device_tracker* next = tracker->next; |
| // This may destroy the tracker if the connection is closed. |
| device_tracker_send(tracker, transports); |
| tracker = next; |
| } |
| } |
| |
| #else |
| |
| void update_transports() { |
| // Nothing to do on the device side. |
| } |
| |
| #endif // ADB_HOST |
| |
| struct tmsg |
| { |
| atransport *transport; |
| int action; |
| }; |
| |
| static int |
| transport_read_action(int fd, struct tmsg* m) |
| { |
| char *p = (char*)m; |
| int len = sizeof(*m); |
| int r; |
| |
| while(len > 0) { |
| r = adb_read(fd, p, len); |
| if(r > 0) { |
| len -= r; |
| p += r; |
| } else { |
| D("transport_read_action: on fd %d: %s\n", fd, strerror(errno)); |
| return -1; |
| } |
| } |
| return 0; |
| } |
| |
| static int |
| transport_write_action(int fd, struct tmsg* m) |
| { |
| char *p = (char*)m; |
| int len = sizeof(*m); |
| int r; |
| |
| while(len > 0) { |
| r = adb_write(fd, p, len); |
| if(r > 0) { |
| len -= r; |
| p += r; |
| } else { |
| D("transport_write_action: on fd %d: %s\n", fd, strerror(errno)); |
| return -1; |
| } |
| } |
| return 0; |
| } |
| |
| static void transport_registration_func(int _fd, unsigned ev, void *data) |
| { |
| tmsg m; |
| int s[2]; |
| atransport *t; |
| |
| if(!(ev & FDE_READ)) { |
| return; |
| } |
| |
| if(transport_read_action(_fd, &m)) { |
| fatal_errno("cannot read transport registration socket"); |
| } |
| |
| t = m.transport; |
| |
| if (m.action == 0) { |
| D("transport: %s removing and free'ing %d\n", t->serial, t->transport_socket); |
| |
| /* IMPORTANT: the remove closes one half of the |
| ** socket pair. The close closes the other half. |
| */ |
| fdevent_remove(&(t->transport_fde)); |
| adb_close(t->fd); |
| |
| adb_mutex_lock(&transport_lock); |
| transport_list.remove(t); |
| adb_mutex_unlock(&transport_lock); |
| |
| if (t->product) |
| free(t->product); |
| if (t->serial) |
| free(t->serial); |
| if (t->model) |
| free(t->model); |
| if (t->device) |
| free(t->device); |
| if (t->devpath) |
| free(t->devpath); |
| |
| delete t; |
| |
| update_transports(); |
| return; |
| } |
| |
| /* don't create transport threads for inaccessible devices */ |
| if (t->connection_state != kCsNoPerm) { |
| /* initial references are the two threads */ |
| t->ref_count = 2; |
| |
| if (adb_socketpair(s)) { |
| fatal_errno("cannot open transport socketpair"); |
| } |
| |
| D("transport: %s socketpair: (%d,%d) starting\n", t->serial, s[0], s[1]); |
| |
| t->transport_socket = s[0]; |
| t->fd = s[1]; |
| |
| fdevent_install(&(t->transport_fde), |
| t->transport_socket, |
| transport_socket_events, |
| t); |
| |
| fdevent_set(&(t->transport_fde), FDE_READ); |
| |
| if (!adb_thread_create(input_thread, t)) { |
| fatal_errno("cannot create input thread"); |
| } |
| |
| if (!adb_thread_create(output_thread, t)) { |
| fatal_errno("cannot create output thread"); |
| } |
| } |
| |
| adb_mutex_lock(&transport_lock); |
| pending_list.remove(t); |
| transport_list.push_front(t); |
| adb_mutex_unlock(&transport_lock); |
| |
| t->disconnects.next = t->disconnects.prev = &t->disconnects; |
| |
| update_transports(); |
| } |
| |
| void init_transport_registration(void) |
| { |
| int s[2]; |
| |
| if(adb_socketpair(s)){ |
| fatal_errno("cannot open transport registration socketpair"); |
| } |
| D("socketpair: (%d,%d)\n", s[0], s[1]); |
| |
| transport_registration_send = s[0]; |
| transport_registration_recv = s[1]; |
| |
| fdevent_install(&transport_registration_fde, |
| transport_registration_recv, |
| transport_registration_func, |
| 0); |
| |
| fdevent_set(&transport_registration_fde, FDE_READ); |
| } |
| |
| /* the fdevent select pump is single threaded */ |
| static void register_transport(atransport *transport) |
| { |
| tmsg m; |
| m.transport = transport; |
| m.action = 1; |
| D("transport: %s registered\n", transport->serial); |
| if(transport_write_action(transport_registration_send, &m)) { |
| fatal_errno("cannot write transport registration socket\n"); |
| } |
| } |
| |
| static void remove_transport(atransport *transport) |
| { |
| tmsg m; |
| m.transport = transport; |
| m.action = 0; |
| D("transport: %s removed\n", transport->serial); |
| if(transport_write_action(transport_registration_send, &m)) { |
| fatal_errno("cannot write transport registration socket\n"); |
| } |
| } |
| |
| |
| static void transport_unref(atransport* t) { |
| CHECK(t != nullptr); |
| adb_mutex_lock(&transport_lock); |
| CHECK_GT(t->ref_count, 0u); |
| t->ref_count--; |
| if (t->ref_count == 0) { |
| D("transport: %s unref (kicking and closing)\n", t->serial); |
| kick_transport_locked(t); |
| t->close(t); |
| remove_transport(t); |
| } else { |
| D("transport: %s unref (count=%zu)\n", t->serial, t->ref_count); |
| } |
| adb_mutex_unlock(&transport_lock); |
| } |
| |
| void add_transport_disconnect(atransport* t, adisconnect* dis) |
| { |
| adb_mutex_lock(&transport_lock); |
| dis->next = &t->disconnects; |
| dis->prev = dis->next->prev; |
| dis->prev->next = dis; |
| dis->next->prev = dis; |
| adb_mutex_unlock(&transport_lock); |
| } |
| |
| void remove_transport_disconnect(atransport* t, adisconnect* dis) |
| { |
| dis->prev->next = dis->next; |
| dis->next->prev = dis->prev; |
| dis->next = dis->prev = dis; |
| } |
| |
| static int qual_match(const char *to_test, |
| const char *prefix, const char *qual, bool sanitize_qual) |
| { |
| if (!to_test || !*to_test) |
| /* Return true if both the qual and to_test are null strings. */ |
| return !qual || !*qual; |
| |
| if (!qual) |
| return 0; |
| |
| if (prefix) { |
| while (*prefix) { |
| if (*prefix++ != *to_test++) |
| return 0; |
| } |
| } |
| |
| while (*qual) { |
| char ch = *qual++; |
| if (sanitize_qual && !isalnum(ch)) |
| ch = '_'; |
| if (ch != *to_test++) |
| return 0; |
| } |
| |
| /* Everything matched so far. Return true if *to_test is a NUL. */ |
| return !*to_test; |
| } |
| |
| atransport* acquire_one_transport(ConnectionState state, TransportType type, |
| const char* serial, std::string* error_out) { |
| atransport *result = NULL; |
| int ambiguous = 0; |
| |
| retry: |
| *error_out = serial ? android::base::StringPrintf("device '%s' not found", serial) : "no devices found"; |
| |
| adb_mutex_lock(&transport_lock); |
| for (auto t : transport_list) { |
| if (t->connection_state == kCsNoPerm) { |
| *error_out = "insufficient permissions for device"; |
| continue; |
| } |
| |
| /* check for matching serial number */ |
| if (serial) { |
| if ((t->serial && !strcmp(serial, t->serial)) || |
| (t->devpath && !strcmp(serial, t->devpath)) || |
| qual_match(serial, "product:", t->product, false) || |
| qual_match(serial, "model:", t->model, true) || |
| qual_match(serial, "device:", t->device, false)) { |
| if (result) { |
| *error_out = "more than one device"; |
| ambiguous = 1; |
| result = NULL; |
| break; |
| } |
| result = t; |
| } |
| } else { |
| if (type == kTransportUsb && t->type == kTransportUsb) { |
| if (result) { |
| *error_out = "more than one device"; |
| ambiguous = 1; |
| result = NULL; |
| break; |
| } |
| result = t; |
| } else if (type == kTransportLocal && t->type == kTransportLocal) { |
| if (result) { |
| *error_out = "more than one emulator"; |
| ambiguous = 1; |
| result = NULL; |
| break; |
| } |
| result = t; |
| } else if (type == kTransportAny) { |
| if (result) { |
| *error_out = "more than one device/emulator"; |
| ambiguous = 1; |
| result = NULL; |
| break; |
| } |
| result = t; |
| } |
| } |
| } |
| adb_mutex_unlock(&transport_lock); |
| |
| if (result) { |
| if (result->connection_state == kCsUnauthorized) { |
| *error_out = "device unauthorized.\n"; |
| char* ADB_VENDOR_KEYS = getenv("ADB_VENDOR_KEYS"); |
| *error_out += "This adb server's $ADB_VENDOR_KEYS is "; |
| *error_out += ADB_VENDOR_KEYS ? ADB_VENDOR_KEYS : "not set"; |
| *error_out += "\n"; |
| *error_out += "Try 'adb kill-server' if that seems wrong.\n"; |
| *error_out += "Otherwise check for a confirmation dialog on your device."; |
| result = NULL; |
| } |
| |
| /* offline devices are ignored -- they are either being born or dying */ |
| if (result && result->connection_state == kCsOffline) { |
| *error_out = "device offline"; |
| result = NULL; |
| } |
| |
| /* check for required connection state */ |
| if (result && state != kCsAny && result->connection_state != state) { |
| *error_out = "invalid device state"; |
| result = NULL; |
| } |
| } |
| |
| if (result) { |
| /* found one that we can take */ |
| *error_out = "success"; |
| } else if (state != kCsAny && (serial || !ambiguous)) { |
| adb_sleep_ms(1000); |
| goto retry; |
| } |
| |
| return result; |
| } |
| |
| const char* atransport::connection_state_name() const { |
| switch (connection_state) { |
| case kCsOffline: return "offline"; |
| case kCsBootloader: return "bootloader"; |
| case kCsDevice: return "device"; |
| case kCsHost: return "host"; |
| case kCsRecovery: return "recovery"; |
| case kCsNoPerm: return "no permissions"; |
| case kCsSideload: return "sideload"; |
| case kCsUnauthorized: return "unauthorized"; |
| default: return "unknown"; |
| } |
| } |
| |
| void atransport::update_version(int version, size_t payload) { |
| protocol_version = std::min(version, A_VERSION); |
| max_payload = std::min(payload, MAX_PAYLOAD); |
| } |
| |
| int atransport::get_protocol_version() const { |
| return protocol_version; |
| } |
| |
| size_t atransport::get_max_payload() const { |
| return max_payload; |
| } |
| |
| // The list of features supported by the current system. Will be sent to the |
| // other side of the connection in the banner. |
| static const FeatureSet gSupportedFeatures = { |
| // None yet. |
| }; |
| |
| const FeatureSet& supported_features() { |
| return gSupportedFeatures; |
| } |
| |
| bool atransport::has_feature(const std::string& feature) const { |
| return features_.count(feature) > 0; |
| } |
| |
| void atransport::add_feature(const std::string& feature) { |
| features_.insert(feature); |
| } |
| |
| bool atransport::CanUseFeature(const std::string& feature) const { |
| return has_feature(feature) && supported_features().count(feature) > 0; |
| } |
| |
| #if ADB_HOST |
| |
| static void append_transport_info(std::string* result, const char* key, |
| const char* value, bool sanitize) { |
| if (value == nullptr || *value == '\0') { |
| return; |
| } |
| |
| *result += ' '; |
| *result += key; |
| |
| for (const char* p = value; *p; ++p) { |
| result->push_back((!sanitize || isalnum(*p)) ? *p : '_'); |
| } |
| } |
| |
| static void append_transport(const atransport* t, std::string* result, |
| bool long_listing) { |
| const char* serial = t->serial; |
| if (!serial || !serial[0]) { |
| serial = "(no serial number)"; |
| } |
| |
| if (!long_listing) { |
| *result += serial; |
| *result += '\t'; |
| *result += t->connection_state_name(); |
| } else { |
| android::base::StringAppendF(result, "%-22s %s", serial, t->connection_state_name()); |
| |
| append_transport_info(result, "", t->devpath, false); |
| append_transport_info(result, "product:", t->product, false); |
| append_transport_info(result, "model:", t->model, true); |
| append_transport_info(result, "device:", t->device, false); |
| append_transport_info(result, "features:", |
| android::base::Join(t->features(), ',').c_str(), |
| false); |
| } |
| *result += '\n'; |
| } |
| |
| std::string list_transports(bool long_listing) { |
| std::string result; |
| adb_mutex_lock(&transport_lock); |
| for (const auto t : transport_list) { |
| append_transport(t, &result, long_listing); |
| } |
| adb_mutex_unlock(&transport_lock); |
| return result; |
| } |
| |
| /* hack for osx */ |
| void close_usb_devices() { |
| adb_mutex_lock(&transport_lock); |
| for (auto t : transport_list) { |
| if (!t->kicked) { |
| t->kicked = 1; |
| t->kick(t); |
| } |
| } |
| adb_mutex_unlock(&transport_lock); |
| } |
| #endif // ADB_HOST |
| |
| int register_socket_transport(int s, const char *serial, int port, int local) { |
| atransport* t = new atransport(); |
| |
| if (!serial) { |
| char buf[32]; |
| snprintf(buf, sizeof(buf), "T-%p", t); |
| serial = buf; |
| } |
| |
| D("transport: %s init'ing for socket %d, on port %d\n", serial, s, port); |
| if (init_socket_transport(t, s, port, local) < 0) { |
| delete t; |
| return -1; |
| } |
| |
| adb_mutex_lock(&transport_lock); |
| for (auto transport : pending_list) { |
| if (transport->serial && strcmp(serial, transport->serial) == 0) { |
| adb_mutex_unlock(&transport_lock); |
| delete t; |
| return -1; |
| } |
| } |
| |
| for (auto transport : transport_list) { |
| if (transport->serial && strcmp(serial, transport->serial) == 0) { |
| adb_mutex_unlock(&transport_lock); |
| delete t; |
| return -1; |
| } |
| } |
| |
| pending_list.push_front(t); |
| t->serial = strdup(serial); |
| adb_mutex_unlock(&transport_lock); |
| |
| register_transport(t); |
| return 0; |
| } |
| |
| #if ADB_HOST |
| atransport *find_transport(const char *serial) { |
| atransport* result = nullptr; |
| |
| adb_mutex_lock(&transport_lock); |
| for (auto& t : transport_list) { |
| if (t->serial && strcmp(serial, t->serial) == 0) { |
| result = t; |
| break; |
| } |
| } |
| adb_mutex_unlock(&transport_lock); |
| |
| return result; |
| } |
| |
| void kick_all_tcp_devices() { |
| adb_mutex_lock(&transport_lock); |
| for (auto& t : transport_list) { |
| // TCP/IP devices have adb_port == 0. |
| if (t->type == kTransportLocal && t->adb_port == 0) { |
| // Kicking breaks the output thread of this transport out of any read, then |
| // the output thread will notify the main thread to make this transport |
| // offline. Then the main thread will notify the input thread to exit. |
| // Finally, this transport will be closed and freed in the main thread. |
| kick_transport_locked(t); |
| } |
| } |
| adb_mutex_unlock(&transport_lock); |
| } |
| |
| #endif |
| |
| void register_usb_transport(usb_handle* usb, const char* serial, |
| const char* devpath, unsigned writeable) { |
| atransport* t = new atransport(); |
| |
| D("transport: %p init'ing for usb_handle %p (sn='%s')\n", t, usb, |
| serial ? serial : ""); |
| init_usb_transport(t, usb, (writeable ? kCsOffline : kCsNoPerm)); |
| if(serial) { |
| t->serial = strdup(serial); |
| } |
| |
| if (devpath) { |
| t->devpath = strdup(devpath); |
| } |
| |
| adb_mutex_lock(&transport_lock); |
| pending_list.push_front(t); |
| adb_mutex_unlock(&transport_lock); |
| |
| register_transport(t); |
| } |
| |
| // This should only be used for transports with connection_state == kCsNoPerm. |
| void unregister_usb_transport(usb_handle *usb) { |
| adb_mutex_lock(&transport_lock); |
| transport_list.remove_if([usb](atransport* t) { |
| return t->usb == usb && t->connection_state == kCsNoPerm; |
| }); |
| adb_mutex_unlock(&transport_lock); |
| } |
| |
| #undef TRACE_TAG |
| #define TRACE_TAG TRACE_RWX |
| |
| int check_header(apacket *p, atransport *t) |
| { |
| if(p->msg.magic != (p->msg.command ^ 0xffffffff)) { |
| D("check_header(): invalid magic\n"); |
| return -1; |
| } |
| |
| if(p->msg.data_length > t->get_max_payload()) { |
| D("check_header(): %u > atransport::max_payload = %zu\n", |
| p->msg.data_length, t->get_max_payload()); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| int check_data(apacket *p) |
| { |
| unsigned count, sum; |
| unsigned char *x; |
| |
| count = p->msg.data_length; |
| x = p->data; |
| sum = 0; |
| while(count-- > 0) { |
| sum += *x++; |
| } |
| |
| if(sum != p->msg.data_check) { |
| return -1; |
| } else { |
| return 0; |
| } |
| } |