summaryrefslogtreecommitdiffstats
path: root/minadbd/transport.c
diff options
context:
space:
mode:
Diffstat (limited to 'minadbd/transport.c')
-rw-r--r--minadbd/transport.c803
1 files changed, 0 insertions, 803 deletions
diff --git a/minadbd/transport.c b/minadbd/transport.c
deleted file mode 100644
index 92679f518..000000000
--- a/minadbd/transport.c
+++ /dev/null
@@ -1,803 +0,0 @@
-/*
- * 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.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <errno.h>
-
-#include "sysdeps.h"
-
-#define TRACE_TAG TRACE_TRANSPORT
-#include "adb.h"
-
-static void transport_unref(atransport *t);
-
-static atransport transport_list = {
- .next = &transport_list,
- .prev = &transport_list,
-};
-
-ADB_MUTEX_DEFINE( transport_lock );
-
-#if ADB_TRACE
-#define MAX_DUMP_HEX_LEN 16
-static void dump_hex( const unsigned char* ptr, size_t len )
-{
- int nn, len2 = len;
- // Build a string instead of logging each character.
- // MAX chars in 2 digit hex, one space, MAX chars, one '\0'.
- char buffer[MAX_DUMP_HEX_LEN *2 + 1 + MAX_DUMP_HEX_LEN + 1 ], *pb = buffer;
-
- if (len2 > MAX_DUMP_HEX_LEN) len2 = MAX_DUMP_HEX_LEN;
-
- for (nn = 0; nn < len2; nn++) {
- sprintf(pb, "%02x", ptr[nn]);
- pb += 2;
- }
- sprintf(pb++, " ");
-
- for (nn = 0; nn < len2; nn++) {
- int c = ptr[nn];
- if (c < 32 || c > 127)
- c = '.';
- *pb++ = c;
- }
- *pb++ = '\0';
- DR("%s\n", buffer);
-}
-#endif
-
-void
-kick_transport(atransport* t)
-{
- if (t && !t->kicked)
- {
- int kicked;
-
- adb_mutex_lock(&transport_lock);
- kicked = t->kicked;
- if (!kicked)
- t->kicked = 1;
- adb_mutex_unlock(&transport_lock);
-
- if (!kicked)
- t->kick(t);
- }
-}
-
-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;
- }
-}
-
-#if ADB_TRACE
-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);
-}
-#endif /* ADB_TRACE */
-
-static int
-read_packet(int fd, const char* name, apacket** ppacket)
-{
- char *p = (char*)ppacket; /* really read a packet address */
- int r;
- int len = sizeof(*ppacket);
- char buff[8];
- if (!name) {
- snprintf(buff, sizeof buff, "fd=%d", fd);
- name = buff;
- }
- while(len > 0) {
- r = adb_read(fd, p, len);
- if(r > 0) {
- len -= r;
- p += r;
- } else {
- D("%s: read_packet (fd=%d), error ret=%d errno=%d: %s\n", name, fd, r, errno, strerror(errno));
- if((r < 0) && (errno == EINTR)) continue;
- return -1;
- }
- }
-
-#if ADB_TRACE
- if (ADB_TRACING) {
- dump_packet(name, "from remote", *ppacket);
- }
-#endif
- return 0;
-}
-
-static int
-write_packet(int fd, const char* name, apacket** ppacket)
-{
- char *p = (char*) ppacket; /* we really write the packet address */
- int r, len = sizeof(ppacket);
- char buff[8];
- if (!name) {
- snprintf(buff, sizeof buff, "fd=%d", fd);
- name = buff;
- }
-
-#if ADB_TRACE
- if (ADB_TRACING) {
- dump_packet(name, "to remote", *ppacket);
- }
-#endif
- len = sizeof(ppacket);
- while(len > 0) {
- r = adb_write(fd, p, len);
- if(r > 0) {
- len -= r;
- p += r;
- } else {
- D("%s: write_packet (fd=%d) error ret=%d errno=%d: %s\n", name, fd, r, errno, strerror(errno));
- if((r < 0) && (errno == EINTR)) continue;
- return -1;
- }
- }
- return 0;
-}
-
-static void transport_socket_events(int fd, unsigned events, void *_t)
-{
- atransport *t = _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 = _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", 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 = _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);
- }
-
- // this is necessary to avoid a race condition that occured when a transport closes
- // while a client socket is still active.
- close_all_sockets(t);
-
- D("%s: transport input thread is exiting, fd %d\n", t->serial, t->fd);
- kick_transport(t);
- transport_unref(t);
- return 0;
-}
-
-
-static int transport_registration_send = -1;
-static int transport_registration_recv = -1;
-static fdevent transport_registration_fde;
-
-void update_transports(void)
-{
- // nothing to do on the device side
-}
-
-typedef struct tmsg tmsg;
-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 {
- if((r < 0) && (errno == EINTR)) continue;
- D("transport_read_action: on fd %d, error %d: %s\n",
- fd, errno, 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 {
- if((r < 0) && (errno == EINTR)) continue;
- D("transport_write_action: on fd %d, error %d: %s\n",
- fd, errno, strerror(errno));
- return -1;
- }
- }
- return 0;
-}
-
-static void transport_registration_func(int _fd, unsigned ev, void *data)
-{
- tmsg m;
- adb_thread_t output_thread_ptr;
- adb_thread_t input_thread_ptr;
- 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);
- t->next->prev = t->prev;
- t->prev->next = t->next;
- adb_mutex_unlock(&transport_lock);
-
- run_transport_disconnects(t);
-
- if (t->product)
- free(t->product);
- if (t->serial)
- free(t->serial);
-
- memset(t,0xee,sizeof(atransport));
- free(t);
-
- update_transports();
- return;
- }
-
- /* don't create transport threads for inaccessible devices */
- if (t->connection_state != CS_NOPERM) {
- /* initial references are the two threads */
- t->ref_count = 2;
-
- if(adb_socketpair(s)) {
- fatal_errno("cannot open transport socketpair");
- }
-
- D("transport: %s (%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_ptr, input_thread, t)){
- fatal_errno("cannot create input thread");
- }
-
- if(adb_thread_create(&output_thread_ptr, output_thread, t)){
- fatal_errno("cannot create output thread");
- }
- }
-
- /* put us on the master device list */
- adb_mutex_lock(&transport_lock);
- t->next = &transport_list;
- t->prev = transport_list.prev;
- t->next->prev = t;
- t->prev->next = 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");
- }
-
- 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_locked(atransport *t)
-{
- t->ref_count--;
- if (t->ref_count == 0) {
- D("transport: %s unref (kicking and closing)\n", t->serial);
- if (!t->kicked) {
- t->kicked = 1;
- t->kick(t);
- }
- t->close(t);
- remove_transport(t);
- } else {
- D("transport: %s unref (count=%d)\n", t->serial, t->ref_count);
- }
-}
-
-static void transport_unref(atransport *t)
-{
- if (t) {
- adb_mutex_lock(&transport_lock);
- transport_unref_locked(t);
- 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;
-}
-
-
-atransport *acquire_one_transport(int state, transport_type ttype, const char* serial, char** error_out)
-{
- atransport *t;
- atransport *result = NULL;
- int ambiguous = 0;
-
-retry:
- if (error_out)
- *error_out = "device not found";
-
- adb_mutex_lock(&transport_lock);
- for (t = transport_list.next; t != &transport_list; t = t->next) {
- if (t->connection_state == CS_NOPERM) {
- if (error_out)
- *error_out = "insufficient permissions for device";
- continue;
- }
-
- /* check for matching serial number */
- if (serial) {
- if (t->serial && !strcmp(serial, t->serial)) {
- result = t;
- break;
- }
- } else {
- if (ttype == kTransportUsb && t->type == kTransportUsb) {
- if (result) {
- if (error_out)
- *error_out = "more than one device";
- ambiguous = 1;
- result = NULL;
- break;
- }
- result = t;
- } else if (ttype == kTransportLocal && t->type == kTransportLocal) {
- if (result) {
- if (error_out)
- *error_out = "more than one emulator";
- ambiguous = 1;
- result = NULL;
- break;
- }
- result = t;
- } else if (ttype == kTransportAny) {
- if (result) {
- if (error_out)
- *error_out = "more than one device and emulator";
- ambiguous = 1;
- result = NULL;
- break;
- }
- result = t;
- }
- }
- }
- adb_mutex_unlock(&transport_lock);
-
- if (result) {
- /* offline devices are ignored -- they are either being born or dying */
- if (result && result->connection_state == CS_OFFLINE) {
- if (error_out)
- *error_out = "device offline";
- result = NULL;
- }
- /* check for required connection state */
- if (result && state != CS_ANY && result->connection_state != state) {
- if (error_out)
- *error_out = "invalid device state";
- result = NULL;
- }
- }
-
- if (result) {
- /* found one that we can take */
- if (error_out)
- *error_out = NULL;
- } else if (state != CS_ANY && (serial || !ambiguous)) {
- adb_sleep_ms(1000);
- goto retry;
- }
-
- return result;
-}
-
-void register_usb_transport(usb_handle *usb, const char *serial, unsigned writeable)
-{
- atransport *t = calloc(1, sizeof(atransport));
- D("transport: %p init'ing for usb_handle %p (sn='%s')\n", t, usb,
- serial ? serial : "");
- init_usb_transport(t, usb, (writeable ? CS_OFFLINE : CS_NOPERM));
- if(serial) {
- t->serial = strdup(serial);
- }
- register_transport(t);
-}
-
-/* this should only be used for transports with connection_state == CS_NOPERM */
-void unregister_usb_transport(usb_handle *usb)
-{
- atransport *t;
- adb_mutex_lock(&transport_lock);
- for(t = transport_list.next; t != &transport_list; t = t->next) {
- if (t->usb == usb && t->connection_state == CS_NOPERM) {
- t->next->prev = t->prev;
- t->prev->next = t->next;
- break;
- }
- }
- adb_mutex_unlock(&transport_lock);
-}
-
-#undef TRACE_TAG
-#define TRACE_TAG TRACE_RWX
-
-int readx(int fd, void *ptr, size_t len)
-{
- char *p = ptr;
- int r;
-#if ADB_TRACE
- size_t len0 = len;
-#endif
- D("readx: fd=%d wanted=%d\n", fd, (int)len);
- while(len > 0) {
- r = adb_read(fd, p, len);
- if(r > 0) {
- len -= r;
- p += r;
- } else {
- if (r < 0) {
- D("readx: fd=%d error %d: %s\n", fd, errno, strerror(errno));
- if (errno == EINTR)
- continue;
- } else {
- D("readx: fd=%d disconnected\n", fd);
- }
- return -1;
- }
- }
-
-#if ADB_TRACE
- D("readx: fd=%d wanted=%zu got=%zu\n", fd, len0, len0 - len);
- dump_hex( ptr, len0 );
-#endif
- return 0;
-}
-
-int writex(int fd, const void *ptr, size_t len)
-{
- char *p = (char*) ptr;
- int r;
-
-#if ADB_TRACE
- D("writex: fd=%d len=%d: ", fd, (int)len);
- dump_hex( ptr, len );
-#endif
- while(len > 0) {
- r = adb_write(fd, p, len);
- if(r > 0) {
- len -= r;
- p += r;
- } else {
- if (r < 0) {
- D("writex: fd=%d error %d: %s\n", fd, errno, strerror(errno));
- if (errno == EINTR)
- continue;
- } else {
- D("writex: fd=%d disconnected\n", fd);
- }
- return -1;
- }
- }
- return 0;
-}
-
-int check_header(apacket *p)
-{
- if(p->msg.magic != (p->msg.command ^ 0xffffffff)) {
- D("check_header(): invalid magic\n");
- return -1;
- }
-
- if(p->msg.data_length > MAX_PAYLOAD) {
- D("check_header(): %d > MAX_PAYLOAD\n", p->msg.data_length);
- 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;
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 05:48:11 +0100